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-rw-r--r--drivers/parport/BUGS-parport9
-rw-r--r--drivers/parport/ChangeLog583
-rw-r--r--drivers/parport/Kconfig145
-rw-r--r--drivers/parport/Makefile19
-rw-r--r--drivers/parport/TODO-parport20
-rw-r--r--drivers/parport/daisy.c512
-rw-r--r--drivers/parport/ieee1284.c819
-rw-r--r--drivers/parport/ieee1284_ops.c921
-rw-r--r--drivers/parport/multiface.h20
-rw-r--r--drivers/parport/parport_amiga.c293
-rw-r--r--drivers/parport/parport_arc.c139
-rw-r--r--drivers/parport/parport_atari.c240
-rw-r--r--drivers/parport/parport_cs.c397
-rw-r--r--drivers/parport/parport_gsc.c437
-rw-r--r--drivers/parport/parport_gsc.h222
-rw-r--r--drivers/parport/parport_mfc3.c404
-rw-r--r--drivers/parport/parport_pc.c3415
-rw-r--r--drivers/parport/parport_serial.c485
-rw-r--r--drivers/parport/parport_sunbpp.c412
-rw-r--r--drivers/parport/probe.c224
-rw-r--r--drivers/parport/procfs.c533
-rw-r--r--drivers/parport/share.c1014
22 files changed, 11263 insertions, 0 deletions
diff --git a/drivers/parport/BUGS-parport b/drivers/parport/BUGS-parport
new file mode 100644
index 000000000000..622ca3cc7fa0
--- /dev/null
+++ b/drivers/parport/BUGS-parport
@@ -0,0 +1,9 @@
+Currently known (or at least suspected) bugs in parport:
+
+o lp doesn't allow you to read status while printing is in progress (is
+ this still true?).
+
+o parport_pc_ecp_read_block_pio() is broken. parport will revert to the
+ software-driven mode in ieee1284_ops.c
+
+See <URL:http://people.redhat.com/twaugh/parport/>.
diff --git a/drivers/parport/ChangeLog b/drivers/parport/ChangeLog
new file mode 100644
index 000000000000..db717c1d62a5
--- /dev/null
+++ b/drivers/parport/ChangeLog
@@ -0,0 +1,583 @@
+2001-10-11 Tim Waugh <twaugh@redhat.com>
+ * parport_pc.c, parport_serial.c: Support for NetMos cards.
+ + Patch originally from Michael Reinelt <reinelt@eunet.at>.
+
+2002-04-25 Tim Waugh <twaugh@redhat.com>
+
+ * parport_serial.c, parport_pc.c: Move some SIIG cards around.
+ Patch from Andrey Panin.
+
+2002-01-20 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_compat_write_block_pio,
+ parport_pc_ecp_write_block_pio, parport_pc_ecp_read_block_pio):
+ Use the default implementations if the caller wants to use
+ O_NONBLOCK.
+
+2002-02-25 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Make sure that priv->ctr_writable includes IntEn
+ even if IRQ is given as a parameter.
+
+2002-01-21 Tim Waugh <twaugh@redhat.com>
+
+ * daisy.c: Apply patch from Max Vorobiev to make parport_daisy_select
+ work for ECP/EPP modes.
+
+2002-01-13 Niels Kristian Bech Jensen <nkbj@image.dk>
+
+ * parport_pc.c: Change some occurrences of frob_set_mode to
+ ECR_WRITE. This fixes PLIP.
+
+2002-01-04 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_claim_or_block): Sleep interruptibly to prevent
+ a possible deadlock.
+
+2001-12-07 Damian Gruszka <damian.gruszka@VisionSystems.de>
+
+ * parport_pc.c (ECR_WRITE): Define. If there are forbidden bits
+ in the ECR register for some chips, this will be a useful place to
+ put that knowledge.
+ (change_mode): Use ECR_WRITE.
+ (parport_pc_restore_state): Likewise.
+ (parport_ECPPS2_supported): Likewise.
+ (parport_ECPEPP_supported): Likewise.
+ (irq_probe_EPP): Likewise.
+ (programmable_irq_support): Likewise.
+ (programmable_dma_support): Likewise.
+ (parport_pc_probe_port): Likewise.
+
+ (frob_set_mode): New function. Set the mode bits of the ECR.
+ (get_fifo_residue): Use frob_set_mode.
+ (parport_pc_ecpepp_read_data): Likewise.
+ (parport_pc_ecpepp_write_data): Likewise.
+ (parport_pc_ecpepp_read_addr): Likewise.
+ (parport_pc_ecpepp_write_addr): Likewise.
+ (parport_pc_compat_write_block_pio): Likewise.
+ (parport_pc_ecp_write_block_pio): Likewise.
+ (parport_ECR_present): Likewise.
+ (parport_ECP_supported): Likewise.
+ (parport_EPP_supported): Likewise.
+ (parport_ECPEPP_supported): Likewise.
+ (programmable_irq_support): Likewise.
+ (irq_probe_ECP): Likewise.
+ (programmable_dma_support): Likewise.
+
+ (parport_pc_enable_irq): Only enable interrupts if we know which
+ IRQ line they will come from.
+ (parport_pc_init_state): Set nErrIntrEn at initialisation.
+ (parport_pc_restore_state): Only write writable bits of CTR.
+ (parport_irq_probe): If no IRQ is found, take ackIntEn out of the
+ writable bit set.
+
+2001-12-07 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_fifo_write_block_pio): Correct typo.
+ (parport_pc_init_state): Only set ackIntEn if we know which IRQ
+ line the interrupts will come from.
+
+2001-12-07 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284_ops.c (parport_ieee1284_epp_write_addr,
+ parport_ieee1284_epp_read_addr): Actually do something useful.
+
+2001-12-07 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (dmaval): Don't use DMA by default. It seems to be
+ too buggy at the moment. Use 'dma=auto' to restore the previous
+ behaviour.
+
+2001-12-07 Tim Waugh <twaugh@redhat.com>
+
+ * daisy.c (DEBUG): Undefine.
+
+2001-12-06 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284_ops.c (parport_ieee1284_ecp_read_data): Mask off
+ PARPORT_CONTROL_AUTOFD as well. Bug spotted by Joe
+ <joeja@mindspring.com>.
+
+2001-12-03 Rich Liu <Rich.Liu@ite.com.tw>
+
+ * parport_pc.c (sio_ite_8872_probe): ITE8873 is a single-port
+ serial board, not a serial+parallel.
+
+2001-11-30 Niels Kristian Bech Jensen <nkbj@image.dk>
+
+ * parport_pc.c: Fix compiler warning.
+
+2001-11-14 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_pci_probe): Hooks for PCI cards before
+ and after probing for ports.
+ * parport_serial.c (parport_register): Likewise.
+
+2001-11-12 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (init_module): Warn when parameters are ignored.
+
+2001-11-01 Damian Gruszka <damian.gruszka@VisionSystems.de>
+
+ * parport_serial.c (serial_register): Set base_baud before
+ calling register_serial.
+
+2001-10-26 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_irq_probe): When ECR programmable IRQ
+ support fails, generate interrupts using the FIFO even if we don't
+ want to use the FIFO for real data transfers.
+ (parport_pc_probe_port): Display the ECR address if we have an
+ ECR, not just if we will use the FIFO.
+
+2001-10-24 Dave Strauss <D.Strauss@motorola.com>
+
+ * parport_pc.c (parport_pc_compat_write_block_pio,
+ parport_pc_ecp_write_block_pio): Allow a few seconds for an ECP
+ transfer to finish up.
+
+2001-10-11 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc (sio_ite_8872_probe): New function, submitted by Rich
+ Liu from ITE. Cleaned up, removed bogus phys_to_virt calls.
+
+2001-10-24 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Support for AKS AladdinCARD. Patch from
+ Aladdin Knowledge Systems (Christian Groessler).
+
+2001-10-24 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284_ops.c (parport_ieee1284_ecp_read_data): Try to minimise
+ turnaround time.
+
+ * ieee1284.c (parport_poll_peripheral): Try a couple of times
+ first without delaying.
+
+2001-10-10 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Support for OX16PCI954 PCI card.
+
+2001-10-10 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Support for OX12PCI840 PCI card (reported by
+ mk@daveg.com). Lock-ups diagnosed by Ronnie Arosa (and now we
+ just don't trust its ECR).
+
+2001-10-10 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c: Support for AVLAB cards.
+
+2001-10-10 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284_ops.c (ecp_forward_to_reverse, ecp_reverse_to_forward):
+ Remember to retry direction switch if it fails. Patch from David
+ Lambert.
+
+2001-10-08 David C. Hansen <haveblue@us.ibm.com>
+
+ * share.c: Make driverlist_lock and parportlist_lock static.
+
+2001-10-08 Philip Blundell <philb@gnu.org>
+
+ * parport_pc.c: New modular parameter verbose_logging.
+ Make port->modes indicate the modes that we are prepared to use,
+ rather than the modes that are available.
+
+2001-10-07 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_probe_port): Fix memory leak spotted by
+ Kipp Cannon.
+
+2001-10-07 Tim Waugh <twaugh@redhat.com>
+
+ * parport_serial.c: Remove NetMos support, since it causes problems
+ for some people.
+
+2001-08-30 Tim Waugh <twaugh@redhat.com>
+
+ * parport_serial.c (parport_serial_pci_probe): Clean-up on partial
+ registration failure.
+
+2001-08-14 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_init_superio): Allow for more than one
+ SuperIO device. Patch from Rich Lio (ITE).
+
+2001-08-11 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Support for Titan Electronics cards.
+
+2001-08-08 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_unregister_device): Remove device from wait list
+ too.
+
+2001-06-20 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Make 'io_hi=0' work.
+
+2001-05-31 Tim Waugh <twaugh@redhat.com>
+
+ * parport_serial.c: New file.
+
+2001-06-05 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_unregister_port): New exported function.
+ Do the opposite of parport_pc_probe_port.
+ (cleanup_module): Use it.
+
+2001-05-22 Juan Quintela <quintela@mandrakesoft.com>
+
+ * parport_amiga.c: Set printk levels.
+ * parport_gsc.c: Likewise.
+ * parport_mfc3.c: Likewise.
+ * parport_pc.c: Likewise.
+ * parport_sunbpp.c: Likewise.
+ * probe.c: Likewise.
+ * share.c: Likewise.
+
+2001-05-10 Fred Barnes <frmb2@ukc.ac.uk>
+
+ * parport_pc.c (parport_pc_epp_read_data): added support for
+ reading from a w91284pic peripheral, flag is PARPORT_W91284PIC.
+
+2001-05-07 Fred Barnes <frmb2@ukc.ac.uk>
+
+ * parport_pc.c (parport_pc_epp_read_data,
+ parport_pc_epp_write_data, parport_pc_epp_read_addr,
+ parport_pc_epp_write_addr): support for fast reads/writes using
+ the PARPORT_EPP_FAST flag.
+
+ * ieee1284.c (parport_read, parport_write): added code to handle
+ software EPP mode (IEEE1284_MODE_EPPSWE). Added code to allow
+ BYTE mode reverse transfers (previously always went for NIBBLE
+ mode).
+
+ * ieee1284_ops.c (parport_ieee1284_epp_read_data,
+ parport_ieee1284_epp_write_data): fixed various polarity problems.
+ Also (theoretically) fixed address versions (.._addr), but no
+ hardware to test this on.
+
+ * parport_pc.h: added parport_dump_state() function for debugging.
+ Needs to have DEBUG_PARPORT to be defined for it to be included.
+
+2001-05-03 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Fix the compile problem I introduce from the last
+ change.
+
+2001-04-20 Paul Gortmaker <p_gortmaker@yahoo.com>
+
+ * parport_pc.c: Cut down the size quite a bit (more than 4k off
+ the object, about 1k off the zImage) for the older non-PCI
+ machines which are typically resource starved anyway...
+
+2001-03-26 R Horn <rjh@world.std.com>
+
+ * parport_pc.c: Some commentary changes.
+
+2001-04-19 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_probe_port): Remove __devinit
+ attribute. Export unconditionally.
+
+2001-04-14 Jeff Garzik <jgarzik@pobox.com>
+
+ Merged: 2001-03-30 Tim Waugh <twaugh@redhat.com>
+
+ * drivers/parport/parport_pc.c: Make Via SuperIO chipsets behave
+ like everything else with respect to irq= and dma= parameters.
+
+2001-04-08 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_save_state): Read from the soft copy of
+ the control port.
+ (parport_pc_restore_state): Update the soft copy of the control
+ port.
+
+2001-03-26 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_find_number, parport_find_base): Trigger
+ a lowlevel driver load if there are no ports yet.
+
+2001-03-26 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_ECP_supported): Remove the IRQ conflict
+ check since it seems totally unreliable.
+
+2001-03-02 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284_ops.c (parport_ieee1284_read_nibble): Reset nAutoFd
+ on timeout. Matches 2.2.x behaviour.
+
+2001-03-02 Andrew Morton <andrewm@uow.edu.au>
+
+ * parport_pc.c (registered_parport): New static variable.
+ (parport_pc_find_ports): Set it when we register PCI driver.
+ (init_module): Unregister PCI driver if necessary when we
+ fail.
+
+2001-03-02 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284_ops.c (parport_ieee1284_write_compat): Don't use
+ down_trylock to reset the IRQ count. Don't even use sema_init,
+ because it's not even necessary to reset the count. I can't
+ remember why we ever did.
+
+2001-01-04 Peter Osterlund <peter.osterlund@mailbox.swipnet.se>
+
+ * ieee1284.c (parport_negotiate): Fix missing printk argument.
+
+2001-01-03 Paul Schleger <Paul.Schleger@t-online.de>
+
+ * probe.c (parse_data): Get rid of trailing blanks in values.
+ Needed for XEROX XJ8C printer.
+
+2001-01-03 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_probe_port): Say something when probes
+ are omitted.
+
+2001-01-03 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (sio_via_686a_probe): Correct dma=255 fix.
+
+2000-11-21 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_ecp_write_block_pio): Fix
+ reverse-to-forward logic. Spotted by Roland Kuck
+ <rci@cityweb.de>.
+
+2000-09-16 Cesar Eduardo Barros <cesarb@nitnet.com.br>
+
+ * parport_pc.c (sio_via_686a_probe): Handle case
+ where hardware returns 255 for IRQ or DMA.
+
+2000-07-20 Eddie C. Dost <ecd@skynet.be>
+
+ * share.c (attach_driver_chain): attach[i](port) needs to be
+ replaced by attach[count](port).
+
+2000-07-20 Eddie C. Dost <ecd@skynet.be>
+
+ * daisy.c (add_dev): kmalloc args are in wrong order.
+
+2000-07-12 Tim Waugh <twaugh@redhat.com>
+
+ * share.c: Documentation for parport_{get,port}_port,
+ parport_find_{number,base}.
+
+2000-07-12 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_unregister_device): Remove unneeded locking
+ (test cad==dev).
+ (parport_claim): Likewise.
+ (parport_find_number): New function.
+
+2000-07-12 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_register_port): Hold the parportlist_lock while
+ looking for a free parport number.
+ (parport_register_driver): Make sure that attach can block.
+ (attach_driver_chain): Likewise.
+
+2000-07-12 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (call_driver_chain): Do reference counting things.
+ (parport_get_port): New function.
+ (parport_put_port): New function.
+ (parport_register_port): Initialise reference count to zero.
+ (parport_unregister_port): Check reference count rather than
+ driver list to see if we can free the port.
+
+2000-07-12 Tim Waugh <twaugh@redhat.com>
+
+ * share.c: Clarifications in doc comments.
+
+2000-07-12 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_unregister_port): Fix typo in comment.
+
+2000-07-11 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c: Support for the full range of Timedia cards.
+
+2000-07-08 Tim Waugh <twaugh@redhat.com>
+
+ * daisy.c: License block comments as part of parportbook.
+ * ieee1284.c: Likewise.
+ * share.c: Likewise.
+
+2000-06-30 Petr Vandrovec <vandrove@vc.cvut.cz>
+
+ * procfs.c (do_hardware_modes): Generated string can be up to 34
+ chars long.
+
+2000-06-20 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c (parport_pc_compat_write_block_pio): Warn about
+ change_mode failures.
+ (parport_pc_ecp_write_block_pio): Likewise.
+ (parport_pc_ecp_read_block_pio): Likewise.
+
+2000-06-20 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c (parport_SPP_supported): Warn more about possibly
+ incorrect parameters.
+
+2000-06-15 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_ECP_supported): Set PARPORT_MODE_COMPAT
+ for ECP ports, since they can all do hardware accelerated
+ compatibility mode (I assume).
+
+2000-06-13 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (cleanup_module): Remark about possible bugs.
+
+2000-06-13 Tim Waugh <twaugh@redhat.com>
+
+ * procfs.c: Break 'hardware' out into separate files.
+
+2000-05-28 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * Fix PCI ID printk for non-superio PCI cards.
+
+2000-05-28 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (call_driver_chain): Get the driverlist_lock.
+ (parport_register_device): Make sure that port->devices always
+ looks consistent.
+ (parport_register_driver): Ensure that parport drivers are given
+ parameters that are valid for the duration of the callback by
+ locking the portlist against changes.
+ (parport_unregister_driver): Likewise.
+ (parport_claim): Don't overwrite flags.
+
+2000-05-28 Tim Waugh <twaugh@redhat.com>
+
+ * daisy.c (assign_addrs): Avoid double-probing daisy-chain devices
+ if the first probe succeeds.
+
+2000-05-16 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_claim): Fix SMP race.
+
+2000-05-15 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c (parport_pc_compat_write_block_pio): Check for
+ timeouts.
+ (parport_pc_ecp_write_block_pio): Likewise.
+ (parport_pc_ecp_read_block_pio): Likewise.
+
+2000-05-02 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c: PCI SYBA patch and verbose PCI detection.
+
+2000-05-02 Gunther Mayer <gunther.mayer@braunschweig.okersurf.de>
+
+ * parport_pc.c (decode_smsc): Fix SMSC 665/666 identification.
+
+2000-04-28 Tim Waugh <twaugh@redhat.com>
+
+ * ieee1284.c: Short function descriptions can't be multiline.
+
+ * daisy.c: Short function descriptions can't be multiline.
+
+2000-04-19 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_fifo_write_block_dma): Make maxlen
+ calculation a bit clearer.
+
+ * ieee1284.c (parport_negotiate): Turn on data line drivers.
+
+ * ieee1284_ops.c (parport_ieee1284_read_byte): Turn off data line
+ drivers.
+ (parport_ieee1284_write_compat): Turn on data line drivers.
+
+ * daisy.c (assign_addrs): Turn on data line drivers.
+ (cpp_mux): Likewise.
+ (cpp_daisy): Likewise.
+
+2000-04-04 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Add support for another PCI card.
+
+2000-04-04 Tim Waugh <twaugh@redhat.com>
+
+ * daisy.c: Documentation in kernel-doc format.
+
+ * ieee1284.c: Likewise.
+
+ * share.c: Likewise.
+
+2000-04-01 Tim Waugh <twaugh@redhat.com>
+
+ * share.c (parport_register_device): Need to hold the module
+ reference counts before sleeping.
+
+2000-03-27 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_ecp_read_block_pio): Correct operation
+ when peripheral is trying to send data when we stop listening.
+
+2000-03-22 Tim Waugh <twaugh@redhat.com>
+
+ * init.c (parport_setup): Fix return value.
+
+2000-03-21 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_pci_probe): Fix return value; call
+ pci_enable_device.
+
+2000-03-16 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_ECP_supported): This seems to trigger on
+ machines that don't have an IRQ conflict; toned down the warning
+ message accordingly.
+
+2000-03-16 Gunther Mayer <gunther.mayer@braunschweig.netsurf.de>
+
+ * parport_pc.c (show_parconfig_smsc37c669): Fix typo.
+ (decode_winbond): More IDs.
+ (winbond_check): Protect against false positives.
+ (winbond_check2): Likewise.
+ (smsc_check): Likewise.
+
+2000-03-15 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (cleanup_module): Don't call pci_unregister_driver
+ if we didn't call pci_register_driver first.
+
+2000-03-13 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (parport_pc_init): Moved from asm/parport.h.
+
+ * Config.in: CONFIG_PARPORT_PC_SUPERIO: new option.
+
+ * parport_pc.c (show_parconfig_smsc37c669): Make __devinit.
+ (show_parconfig_winbond): Likewise.
+ (decode_winbond): Likewise.
+ (decode_smsc): Likewise.
+ (winbond_check): Likewise.
+ (winbond_check2): Likewise.
+ (smsc_check): Likewise.
+ (detect_and_report_winbond): Likewise.
+ (detect_and_report_smsc): Likewise.
+ (get_superio_dma): Likewise.
+ (get_superio_irq): Likewise.
+ (parport_pc_find_isa_ports): New function.
+ (parport_pc_find_ports): New function.
+ (init_module): Make superio a config option, not a parameter.
+
+2000-03-10 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c (decode_winbond): Use correct 83877ATF chip ID.
+ (decode_winbond): Fix typo.
+
+2000-03-09 Tim Waugh <twaugh@redhat.com>
+
+ * parport_pc.c: Integrate SuperIO PCI probe with normal PCI card
+ probe, so that the MODULE_DEVICE_TABLE is complete.
+
diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig
new file mode 100644
index 000000000000..731010e0e6f6
--- /dev/null
+++ b/drivers/parport/Kconfig
@@ -0,0 +1,145 @@
+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+# Parport configuration.
+#
+
+menu "Parallel port support"
+
+config PARPORT
+ tristate "Parallel port support"
+ ---help---
+ If you want to use devices connected to your machine's parallel port
+ (the connector at the computer with 25 holes), e.g. printer, ZIP
+ drive, PLIP link (Parallel Line Internet Protocol is mainly used to
+ create a mini network by connecting the parallel ports of two local
+ machines) etc., then you need to say Y here; please read
+ <file:Documentation/parport.txt> and
+ <file:drivers/parport/BUGS-parport>.
+
+ For extensive information about drivers for many devices attaching
+ to the parallel port see <http://www.torque.net/linux-pp.html> on
+ the WWW.
+
+ It is possible to share a single parallel port among several devices
+ and it is safe to compile all the corresponding drivers into the
+ kernel. To compile parallel port support as a module, choose M here:
+ the module will be called parport.
+ If you have more than one parallel port and want to specify which
+ port and IRQ to be used by this driver at module load time, take a
+ look at <file:Documentation/parport.txt>.
+
+ If unsure, say Y.
+
+config PARPORT_PC
+ tristate "PC-style hardware"
+ depends on PARPORT && (!SPARC64 || PCI) && (!SPARC32 || BROKEN)
+ ---help---
+ You should say Y here if you have a PC-style parallel port. All
+ IBM PC compatible computers and some Alphas have PC-style
+ parallel ports. PA-RISC owners should only say Y here if they
+ have a SuperIO parallel port.
+
+ To compile this driver as a module, choose M here: the
+ module will be called parport_pc.
+
+ If unsure, say Y.
+
+config PARPORT_SERIAL
+ tristate "Multi-IO cards (parallel and serial)"
+ depends on SERIAL_8250 && PARPORT_PC && PCI
+ help
+ This adds support for multi-IO PCI cards that have parallel and
+ serial ports. You should say Y or M here. If you say M, the module
+ will be called parport_serial.
+
+config PARPORT_PC_FIFO
+ bool "Use FIFO/DMA if available (EXPERIMENTAL)"
+ depends on PARPORT_PC && EXPERIMENTAL
+ help
+ Many parallel port chipsets provide hardware that can speed up
+ printing. Say Y here if you want to take advantage of that.
+
+ As well as actually having a FIFO, or DMA capability, the kernel
+ will need to know which IRQ the parallel port has. By default,
+ parallel port interrupts will not be used, and so neither will the
+ FIFO. See <file:Documentation/parport.txt> to find out how to
+ specify which IRQ/DMA to use.
+
+config PARPORT_PC_SUPERIO
+ bool "SuperIO chipset support (EXPERIMENTAL)"
+ depends on PARPORT_PC && EXPERIMENTAL
+ help
+ Saying Y here enables some probes for Super-IO chipsets in order to
+ find out things like base addresses, IRQ lines and DMA channels. It
+ is safe to say N.
+
+config PARPORT_PC_PCMCIA
+ tristate "Support for PCMCIA management for PC-style ports"
+ depends on PARPORT!=n && (PCMCIA!=n && PARPORT_PC=m && PARPORT_PC || PARPORT_PC=y && PCMCIA)
+ help
+ Say Y here if you need PCMCIA support for your PC-style parallel
+ ports. If unsure, say N.
+
+config PARPORT_NOT_PC
+ bool
+
+config PARPORT_ARC
+ tristate "Archimedes hardware"
+ depends on ARM && PARPORT
+ select PARPORT_NOT_PC
+
+config PARPORT_AMIGA
+ tristate "Amiga builtin port"
+ depends on AMIGA && PARPORT
+ select PARPORT_NOT_PC
+ help
+ Say Y here if you need support for the parallel port hardware on
+ Amiga machines. This code is also available as a module (say M),
+ called parport_amiga. If in doubt, saying N is the safe plan.
+
+config PARPORT_MFC3
+ tristate "Multiface III parallel port"
+ depends on ZORRO && PARPORT
+ select PARPORT_NOT_PC
+ help
+ Say Y here if you need parallel port support for the MFC3 card.
+ This code is also available as a module (say M), called
+ parport_mfc3. If in doubt, saying N is the safe plan.
+
+config PARPORT_ATARI
+ tristate "Atari hardware"
+ depends on ATARI && PARPORT
+ select PARPORT_NOT_PC
+ help
+ Say Y here if you need support for the parallel port hardware on
+ Atari machines. This code is also available as a module (say M),
+ called parport_atari. If in doubt, saying N is the safe plan.
+
+config PARPORT_GSC
+ tristate
+ default GSC
+ depends on PARPORT
+
+config PARPORT_SUNBPP
+ tristate "Sparc hardware (EXPERIMENTAL)"
+ depends on SBUS && PARPORT && EXPERIMENTAL
+ select PARPORT_NOT_PC
+ help
+ This driver provides support for the bidirectional parallel port
+ found on many Sun machines. Note that many of the newer Ultras
+ actually have pc style hardware instead.
+
+config PARPORT_1284
+ bool "IEEE 1284 transfer modes"
+ depends on PARPORT
+ help
+ If you have a printer that supports status readback or device ID, or
+ want to use a device that uses enhanced parallel port transfer modes
+ such as EPP and ECP, say Y here to enable advanced IEEE 1284
+ transfer modes. Also say Y if you want device ID information to
+ appear in /proc/sys/dev/parport/*/autoprobe*. It is safe to say N.
+
+endmenu
+
diff --git a/drivers/parport/Makefile b/drivers/parport/Makefile
new file mode 100644
index 000000000000..5372212bb9d9
--- /dev/null
+++ b/drivers/parport/Makefile
@@ -0,0 +1,19 @@
+#
+# Makefile for the kernel Parallel port device drivers.
+#
+
+parport-objs := share.o ieee1284.o ieee1284_ops.o procfs.o
+
+ifeq ($(CONFIG_PARPORT_1284),y)
+ parport-objs += daisy.o probe.o
+endif
+
+obj-$(CONFIG_PARPORT) += parport.o
+obj-$(CONFIG_PARPORT_PC) += parport_pc.o
+obj-$(CONFIG_PARPORT_SERIAL) += parport_serial.o
+obj-$(CONFIG_PARPORT_PC_PCMCIA) += parport_cs.o
+obj-$(CONFIG_PARPORT_AMIGA) += parport_amiga.o
+obj-$(CONFIG_PARPORT_MFC3) += parport_mfc3.o
+obj-$(CONFIG_PARPORT_ATARI) += parport_atari.o
+obj-$(CONFIG_PARPORT_SUNBPP) += parport_sunbpp.o
+obj-$(CONFIG_PARPORT_GSC) += parport_gsc.o
diff --git a/drivers/parport/TODO-parport b/drivers/parport/TODO-parport
new file mode 100644
index 000000000000..089b14ee446f
--- /dev/null
+++ b/drivers/parport/TODO-parport
@@ -0,0 +1,20 @@
+Things to be done.
+
+0. Fix the bugs (see BUGS-parport).
+
+1. Proper documentation.
+
+2. A better lp.c:
+
+ a) ECP support would be nice. This can only work if both the port and
+ the printer support it.
+
+ b) Handle status readback automatically. IEEE1284 printers can post status
+ bits when they have something to say. We should read out and deal
+ with (maybe just log) whatever the printer wants to tell the world.
+
+3. Support more hardware (eg m68k, Sun bpp).
+
+4. A better PLIP (make use of bidirectional/ECP/EPP ports).
+
+See <URL:http://people.redhat.com/twaugh/parport/>.
diff --git a/drivers/parport/daisy.c b/drivers/parport/daisy.c
new file mode 100644
index 000000000000..075c7eb5c85d
--- /dev/null
+++ b/drivers/parport/daisy.c
@@ -0,0 +1,512 @@
+/*
+ * IEEE 1284.3 Parallel port daisy chain and multiplexor code
+ *
+ * Copyright (C) 1999, 2000 Tim Waugh <tim@cyberelk.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * ??-12-1998: Initial implementation.
+ * 31-01-1999: Make port-cloning transparent.
+ * 13-02-1999: Move DeviceID technique from parport_probe.
+ * 13-03-1999: Get DeviceID from non-IEEE 1284.3 devices too.
+ * 22-02-2000: Count devices that are actually detected.
+ *
+ * Any part of this program may be used in documents licensed under
+ * the GNU Free Documentation License, Version 1.1 or any later version
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/parport.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+
+#include <asm/current.h>
+#include <asm/uaccess.h>
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DPRINTK(stuff...) printk (stuff)
+#else
+#define DPRINTK(stuff...)
+#endif
+
+static struct daisydev {
+ struct daisydev *next;
+ struct parport *port;
+ int daisy;
+ int devnum;
+} *topology = NULL;
+static DEFINE_SPINLOCK(topology_lock);
+
+static int numdevs = 0;
+
+/* Forward-declaration of lower-level functions. */
+static int mux_present (struct parport *port);
+static int num_mux_ports (struct parport *port);
+static int select_port (struct parport *port);
+static int assign_addrs (struct parport *port);
+
+/* Add a device to the discovered topology. */
+static void add_dev (int devnum, struct parport *port, int daisy)
+{
+ struct daisydev *newdev, **p;
+ newdev = kmalloc (sizeof (struct daisydev), GFP_KERNEL);
+ if (newdev) {
+ newdev->port = port;
+ newdev->daisy = daisy;
+ newdev->devnum = devnum;
+ spin_lock(&topology_lock);
+ for (p = &topology; *p && (*p)->devnum<devnum; p = &(*p)->next)
+ ;
+ newdev->next = *p;
+ *p = newdev;
+ spin_unlock(&topology_lock);
+ }
+}
+
+/* Clone a parport (actually, make an alias). */
+static struct parport *clone_parport (struct parport *real, int muxport)
+{
+ struct parport *extra = parport_register_port (real->base,
+ real->irq,
+ real->dma,
+ real->ops);
+ if (extra) {
+ extra->portnum = real->portnum;
+ extra->physport = real;
+ extra->muxport = muxport;
+ real->slaves[muxport-1] = extra;
+ }
+
+ return extra;
+}
+
+/* Discover the IEEE1284.3 topology on a port -- muxes and daisy chains.
+ * Return value is number of devices actually detected. */
+int parport_daisy_init (struct parport *port)
+{
+ int detected = 0;
+ char *deviceid;
+ static const char *th[] = { /*0*/"th", "st", "nd", "rd", "th" };
+ int num_ports;
+ int i;
+ int last_try = 0;
+
+again:
+ /* Because this is called before any other devices exist,
+ * we don't have to claim exclusive access. */
+
+ /* If mux present on normal port, need to create new
+ * parports for each extra port. */
+ if (port->muxport < 0 && mux_present (port) &&
+ /* don't be fooled: a mux must have 2 or 4 ports. */
+ ((num_ports = num_mux_ports (port)) == 2 || num_ports == 4)) {
+ /* Leave original as port zero. */
+ port->muxport = 0;
+ printk (KERN_INFO
+ "%s: 1st (default) port of %d-way multiplexor\n",
+ port->name, num_ports);
+ for (i = 1; i < num_ports; i++) {
+ /* Clone the port. */
+ struct parport *extra = clone_parport (port, i);
+ if (!extra) {
+ if (signal_pending (current))
+ break;
+
+ schedule ();
+ continue;
+ }
+
+ printk (KERN_INFO
+ "%s: %d%s port of %d-way multiplexor on %s\n",
+ extra->name, i + 1, th[i + 1], num_ports,
+ port->name);
+
+ /* Analyse that port too. We won't recurse
+ forever because of the 'port->muxport < 0'
+ test above. */
+ parport_daisy_init(extra);
+ }
+ }
+
+ if (port->muxport >= 0)
+ select_port (port);
+
+ parport_daisy_deselect_all (port);
+ detected += assign_addrs (port);
+
+ /* Count the potential legacy device at the end. */
+ add_dev (numdevs++, port, -1);
+
+ /* Find out the legacy device's IEEE 1284 device ID. */
+ deviceid = kmalloc (1000, GFP_KERNEL);
+ if (deviceid) {
+ if (parport_device_id (numdevs - 1, deviceid, 1000) > 2)
+ detected++;
+
+ kfree (deviceid);
+ }
+
+ if (!detected && !last_try) {
+ /* No devices were detected. Perhaps they are in some
+ funny state; let's try to reset them and see if
+ they wake up. */
+ parport_daisy_fini (port);
+ parport_write_control (port, PARPORT_CONTROL_SELECT);
+ udelay (50);
+ parport_write_control (port,
+ PARPORT_CONTROL_SELECT |
+ PARPORT_CONTROL_INIT);
+ udelay (50);
+ last_try = 1;
+ goto again;
+ }
+
+ return detected;
+}
+
+/* Forget about devices on a physical port. */
+void parport_daisy_fini (struct parport *port)
+{
+ struct daisydev **p;
+
+ spin_lock(&topology_lock);
+ p = &topology;
+ while (*p) {
+ struct daisydev *dev = *p;
+ if (dev->port != port) {
+ p = &dev->next;
+ continue;
+ }
+ *p = dev->next;
+ kfree(dev);
+ }
+
+ /* Gaps in the numbering could be handled better. How should
+ someone enumerate through all IEEE1284.3 devices in the
+ topology?. */
+ if (!topology) numdevs = 0;
+ spin_unlock(&topology_lock);
+ return;
+}
+
+/**
+ * parport_open - find a device by canonical device number
+ * @devnum: canonical device number
+ * @name: name to associate with the device
+ * @pf: preemption callback
+ * @kf: kick callback
+ * @irqf: interrupt handler
+ * @flags: registration flags
+ * @handle: driver data
+ *
+ * This function is similar to parport_register_device(), except
+ * that it locates a device by its number rather than by the port
+ * it is attached to.
+ *
+ * All parameters except for @devnum are the same as for
+ * parport_register_device(). The return value is the same as
+ * for parport_register_device().
+ **/
+
+struct pardevice *parport_open (int devnum, const char *name,
+ int (*pf) (void *), void (*kf) (void *),
+ void (*irqf) (int, void *, struct pt_regs *),
+ int flags, void *handle)
+{
+ struct daisydev *p = topology;
+ struct parport *port;
+ struct pardevice *dev;
+ int daisy;
+
+ spin_lock(&topology_lock);
+ while (p && p->devnum != devnum)
+ p = p->next;
+
+ if (!p) {
+ spin_unlock(&topology_lock);
+ return NULL;
+ }
+
+ daisy = p->daisy;
+ port = parport_get_port(p->port);
+ spin_unlock(&topology_lock);
+
+ dev = parport_register_device (port, name, pf, kf,
+ irqf, flags, handle);
+ parport_put_port(port);
+ if (!dev)
+ return NULL;
+
+ dev->daisy = daisy;
+
+ /* Check that there really is a device to select. */
+ if (daisy >= 0) {
+ int selected;
+ parport_claim_or_block (dev);
+ selected = port->daisy;
+ parport_release (dev);
+
+ if (selected != port->daisy) {
+ /* No corresponding device. */
+ parport_unregister_device (dev);
+ return NULL;
+ }
+ }
+
+ return dev;
+}
+
+/**
+ * parport_close - close a device opened with parport_open()
+ * @dev: device to close
+ *
+ * This is to parport_open() as parport_unregister_device() is to
+ * parport_register_device().
+ **/
+
+void parport_close (struct pardevice *dev)
+{
+ parport_unregister_device (dev);
+}
+
+/**
+ * parport_device_num - convert device coordinates
+ * @parport: parallel port number
+ * @mux: multiplexor port number (-1 for no multiplexor)
+ * @daisy: daisy chain address (-1 for no daisy chain address)
+ *
+ * This tries to locate a device on the given parallel port,
+ * multiplexor port and daisy chain address, and returns its
+ * device number or -NXIO if no device with those coordinates
+ * exists.
+ **/
+
+int parport_device_num (int parport, int mux, int daisy)
+{
+ int res = -ENXIO;
+ struct daisydev *dev;
+
+ spin_lock(&topology_lock);
+ dev = topology;
+ while (dev && dev->port->portnum != parport &&
+ dev->port->muxport != mux && dev->daisy != daisy)
+ dev = dev->next;
+ if (dev)
+ res = dev->devnum;
+ spin_unlock(&topology_lock);
+
+ return res;
+}
+
+/* Send a daisy-chain-style CPP command packet. */
+static int cpp_daisy (struct parport *port, int cmd)
+{
+ unsigned char s;
+
+ parport_data_forward (port);
+ parport_write_data (port, 0xaa); udelay (2);
+ parport_write_data (port, 0x55); udelay (2);
+ parport_write_data (port, 0x00); udelay (2);
+ parport_write_data (port, 0xff); udelay (2);
+ s = parport_read_status (port) & (PARPORT_STATUS_BUSY
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_ERROR);
+ if (s != (PARPORT_STATUS_BUSY
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_ERROR)) {
+ DPRINTK (KERN_DEBUG "%s: cpp_daisy: aa5500ff(%02x)\n",
+ port->name, s);
+ return -ENXIO;
+ }
+
+ parport_write_data (port, 0x87); udelay (2);
+ s = parport_read_status (port) & (PARPORT_STATUS_BUSY
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_ERROR);
+ if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) {
+ DPRINTK (KERN_DEBUG "%s: cpp_daisy: aa5500ff87(%02x)\n",
+ port->name, s);
+ return -ENXIO;
+ }
+
+ parport_write_data (port, 0x78); udelay (2);
+ parport_write_data (port, cmd); udelay (2);
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+ udelay (1);
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+ udelay (1);
+ s = parport_read_status (port);
+ parport_write_data (port, 0xff); udelay (2);
+
+ return s;
+}
+
+/* Send a mux-style CPP command packet. */
+static int cpp_mux (struct parport *port, int cmd)
+{
+ unsigned char s;
+ int rc;
+
+ parport_data_forward (port);
+ parport_write_data (port, 0xaa); udelay (2);
+ parport_write_data (port, 0x55); udelay (2);
+ parport_write_data (port, 0xf0); udelay (2);
+ parport_write_data (port, 0x0f); udelay (2);
+ parport_write_data (port, 0x52); udelay (2);
+ parport_write_data (port, 0xad); udelay (2);
+ parport_write_data (port, cmd); udelay (2);
+
+ s = parport_read_status (port);
+ if (!(s & PARPORT_STATUS_ACK)) {
+ DPRINTK (KERN_DEBUG "%s: cpp_mux: aa55f00f52ad%02x(%02x)\n",
+ port->name, cmd, s);
+ return -EIO;
+ }
+
+ rc = (((s & PARPORT_STATUS_SELECT ? 1 : 0) << 0) |
+ ((s & PARPORT_STATUS_PAPEROUT ? 1 : 0) << 1) |
+ ((s & PARPORT_STATUS_BUSY ? 0 : 1) << 2) |
+ ((s & PARPORT_STATUS_ERROR ? 0 : 1) << 3));
+
+ return rc;
+}
+
+void parport_daisy_deselect_all (struct parport *port)
+{
+ cpp_daisy (port, 0x30);
+}
+
+int parport_daisy_select (struct parport *port, int daisy, int mode)
+{
+ switch (mode)
+ {
+ // For these modes we should switch to EPP mode:
+ case IEEE1284_MODE_EPP:
+ case IEEE1284_MODE_EPPSL:
+ case IEEE1284_MODE_EPPSWE:
+ return (cpp_daisy (port, 0x20 + daisy) &
+ PARPORT_STATUS_ERROR);
+
+ // For these modes we should switch to ECP mode:
+ case IEEE1284_MODE_ECP:
+ case IEEE1284_MODE_ECPRLE:
+ case IEEE1284_MODE_ECPSWE:
+ return (cpp_daisy (port, 0xd0 + daisy) &
+ PARPORT_STATUS_ERROR);
+
+ // Nothing was told for BECP in Daisy chain specification.
+ // May be it's wise to use ECP?
+ case IEEE1284_MODE_BECP:
+ // Others use compat mode
+ case IEEE1284_MODE_NIBBLE:
+ case IEEE1284_MODE_BYTE:
+ case IEEE1284_MODE_COMPAT:
+ default:
+ return (cpp_daisy (port, 0xe0 + daisy) &
+ PARPORT_STATUS_ERROR);
+ }
+}
+
+static int mux_present (struct parport *port)
+{
+ return cpp_mux (port, 0x51) == 3;
+}
+
+static int num_mux_ports (struct parport *port)
+{
+ return cpp_mux (port, 0x58);
+}
+
+static int select_port (struct parport *port)
+{
+ int muxport = port->muxport;
+ return cpp_mux (port, 0x60 + muxport) == muxport;
+}
+
+static int assign_addrs (struct parport *port)
+{
+ unsigned char s, last_dev;
+ unsigned char daisy;
+ int thisdev = numdevs;
+ int detected;
+ char *deviceid;
+
+ parport_data_forward (port);
+ parport_write_data (port, 0xaa); udelay (2);
+ parport_write_data (port, 0x55); udelay (2);
+ parport_write_data (port, 0x00); udelay (2);
+ parport_write_data (port, 0xff); udelay (2);
+ s = parport_read_status (port) & (PARPORT_STATUS_BUSY
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_ERROR);
+ if (s != (PARPORT_STATUS_BUSY
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_ERROR)) {
+ DPRINTK (KERN_DEBUG "%s: assign_addrs: aa5500ff(%02x)\n",
+ port->name, s);
+ return 0;
+ }
+
+ parport_write_data (port, 0x87); udelay (2);
+ s = parport_read_status (port) & (PARPORT_STATUS_BUSY
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_ERROR);
+ if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) {
+ DPRINTK (KERN_DEBUG "%s: assign_addrs: aa5500ff87(%02x)\n",
+ port->name, s);
+ return 0;
+ }
+
+ parport_write_data (port, 0x78); udelay (2);
+ last_dev = 0; /* We've just been speaking to a device, so we
+ know there must be at least _one_ out there. */
+
+ for (daisy = 0; daisy < 4; daisy++) {
+ parport_write_data (port, daisy);
+ udelay (2);
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+ udelay (1);
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+ udelay (1);
+
+ if (last_dev)
+ /* No more devices. */
+ break;
+
+ last_dev = !(parport_read_status (port)
+ & PARPORT_STATUS_BUSY);
+
+ add_dev (numdevs++, port, daisy);
+ }
+
+ parport_write_data (port, 0xff); udelay (2);
+ detected = numdevs - thisdev;
+ DPRINTK (KERN_DEBUG "%s: Found %d daisy-chained devices\n", port->name,
+ detected);
+
+ /* Ask the new devices to introduce themselves. */
+ deviceid = kmalloc (1000, GFP_KERNEL);
+ if (!deviceid) return 0;
+
+ for (daisy = 0; thisdev < numdevs; thisdev++, daisy++)
+ parport_device_id (thisdev, deviceid, 1000);
+
+ kfree (deviceid);
+ return detected;
+}
diff --git a/drivers/parport/ieee1284.c b/drivers/parport/ieee1284.c
new file mode 100644
index 000000000000..694bae162fed
--- /dev/null
+++ b/drivers/parport/ieee1284.c
@@ -0,0 +1,819 @@
+/* $Id: parport_ieee1284.c,v 1.4 1997/10/19 21:37:21 philip Exp $
+ * IEEE-1284 implementation for parport.
+ *
+ * Authors: Phil Blundell <philb@gnu.org>
+ * Carsten Gross <carsten@sol.wohnheim.uni-ulm.de>
+ * Jose Renau <renau@acm.org>
+ * Tim Waugh <tim@cyberelk.demon.co.uk> (largely rewritten)
+ *
+ * This file is responsible for IEEE 1284 negotiation, and for handing
+ * read/write requests to low-level drivers.
+ *
+ * Any part of this program may be used in documents licensed under
+ * the GNU Free Documentation License, Version 1.1 or any later version
+ * published by the Free Software Foundation.
+ *
+ * Various hacks, Fred Barnes <frmb2@ukc.ac.uk>, 04/2000
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/threads.h>
+#include <linux/parport.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/timer.h>
+#include <linux/sched.h>
+
+#undef DEBUG /* undef me for production */
+
+#ifdef CONFIG_LP_CONSOLE
+#undef DEBUG /* Don't want a garbled console */
+#endif
+
+#ifdef DEBUG
+#define DPRINTK(stuff...) printk (stuff)
+#else
+#define DPRINTK(stuff...)
+#endif
+
+/* Make parport_wait_peripheral wake up.
+ * It will be useful to call this from an interrupt handler. */
+static void parport_ieee1284_wakeup (struct parport *port)
+{
+ up (&port->physport->ieee1284.irq);
+}
+
+static struct parport *port_from_cookie[PARPORT_MAX];
+static void timeout_waiting_on_port (unsigned long cookie)
+{
+ parport_ieee1284_wakeup (port_from_cookie[cookie % PARPORT_MAX]);
+}
+
+/**
+ * parport_wait_event - wait for an event on a parallel port
+ * @port: port to wait on
+ * @timeout: time to wait (in jiffies)
+ *
+ * This function waits for up to @timeout jiffies for an
+ * interrupt to occur on a parallel port. If the port timeout is
+ * set to zero, it returns immediately.
+ *
+ * If an interrupt occurs before the timeout period elapses, this
+ * function returns one immediately. If it times out, it returns
+ * a value greater than zero. An error code less than zero
+ * indicates an error (most likely a pending signal), and the
+ * calling code should finish what it's doing as soon as it can.
+ */
+
+int parport_wait_event (struct parport *port, signed long timeout)
+{
+ int ret;
+ struct timer_list timer;
+
+ if (!port->physport->cad->timeout)
+ /* Zero timeout is special, and we can't down() the
+ semaphore. */
+ return 1;
+
+ init_timer (&timer);
+ timer.expires = jiffies + timeout;
+ timer.function = timeout_waiting_on_port;
+ port_from_cookie[port->number % PARPORT_MAX] = port;
+ timer.data = port->number;
+
+ add_timer (&timer);
+ ret = down_interruptible (&port->physport->ieee1284.irq);
+ if (!del_timer (&timer) && !ret)
+ /* Timed out. */
+ ret = 1;
+
+ return ret;
+}
+
+/**
+ * parport_poll_peripheral - poll status lines
+ * @port: port to watch
+ * @mask: status lines to watch
+ * @result: desired values of chosen status lines
+ * @usec: timeout
+ *
+ * This function busy-waits until the masked status lines have
+ * the desired values, or until the timeout period elapses. The
+ * @mask and @result parameters are bitmasks, with the bits
+ * defined by the constants in parport.h: %PARPORT_STATUS_BUSY,
+ * and so on.
+ *
+ * This function does not call schedule(); instead it busy-waits
+ * using udelay(). It currently has a resolution of 5usec.
+ *
+ * If the status lines take on the desired values before the
+ * timeout period elapses, parport_poll_peripheral() returns zero
+ * immediately. A zero return value greater than zero indicates
+ * a timeout. An error code (less than zero) indicates an error,
+ * most likely a signal that arrived, and the caller should
+ * finish what it is doing as soon as possible.
+*/
+
+int parport_poll_peripheral(struct parport *port,
+ unsigned char mask,
+ unsigned char result,
+ int usec)
+{
+ /* Zero return code is success, >0 is timeout. */
+ int count = usec / 5 + 2;
+ int i;
+ unsigned char status;
+ for (i = 0; i < count; i++) {
+ status = parport_read_status (port);
+ if ((status & mask) == result)
+ return 0;
+ if (signal_pending (current))
+ return -EINTR;
+ if (need_resched())
+ break;
+ if (i >= 2)
+ udelay (5);
+ }
+
+ return 1;
+}
+
+/**
+ * parport_wait_peripheral - wait for status lines to change in 35ms
+ * @port: port to watch
+ * @mask: status lines to watch
+ * @result: desired values of chosen status lines
+ *
+ * This function waits until the masked status lines have the
+ * desired values, or until 35ms have elapsed (see IEEE 1284-1994
+ * page 24 to 25 for why this value in particular is hardcoded).
+ * The @mask and @result parameters are bitmasks, with the bits
+ * defined by the constants in parport.h: %PARPORT_STATUS_BUSY,
+ * and so on.
+ *
+ * The port is polled quickly to start off with, in anticipation
+ * of a fast response from the peripheral. This fast polling
+ * time is configurable (using /proc), and defaults to 500usec.
+ * If the timeout for this port (see parport_set_timeout()) is
+ * zero, the fast polling time is 35ms, and this function does
+ * not call schedule().
+ *
+ * If the timeout for this port is non-zero, after the fast
+ * polling fails it uses parport_wait_event() to wait for up to
+ * 10ms, waking up if an interrupt occurs.
+ */
+
+int parport_wait_peripheral(struct parport *port,
+ unsigned char mask,
+ unsigned char result)
+{
+ int ret;
+ int usec;
+ unsigned long deadline;
+ unsigned char status;
+
+ usec = port->physport->spintime; /* usecs of fast polling */
+ if (!port->physport->cad->timeout)
+ /* A zero timeout is "special": busy wait for the
+ entire 35ms. */
+ usec = 35000;
+
+ /* Fast polling.
+ *
+ * This should be adjustable.
+ * How about making a note (in the device structure) of how long
+ * it takes, so we know for next time?
+ */
+ ret = parport_poll_peripheral (port, mask, result, usec);
+ if (ret != 1)
+ return ret;
+
+ if (!port->physport->cad->timeout)
+ /* We may be in an interrupt handler, so we can't poll
+ * slowly anyway. */
+ return 1;
+
+ /* 40ms of slow polling. */
+ deadline = jiffies + (HZ + 24) / 25;
+ while (time_before (jiffies, deadline)) {
+ int ret;
+
+ if (signal_pending (current))
+ return -EINTR;
+
+ /* Wait for 10ms (or until an interrupt occurs if
+ * the handler is set) */
+ if ((ret = parport_wait_event (port, (HZ + 99) / 100)) < 0)
+ return ret;
+
+ status = parport_read_status (port);
+ if ((status & mask) == result)
+ return 0;
+
+ if (!ret) {
+ /* parport_wait_event didn't time out, but the
+ * peripheral wasn't actually ready either.
+ * Wait for another 10ms. */
+ __set_current_state (TASK_INTERRUPTIBLE);
+ schedule_timeout ((HZ+ 99) / 100);
+ }
+ }
+
+ return 1;
+}
+
+#ifdef CONFIG_PARPORT_1284
+/* Terminate a negotiated mode. */
+static void parport_ieee1284_terminate (struct parport *port)
+{
+ int r;
+ port = port->physport;
+
+ /* EPP terminates differently. */
+ switch (port->ieee1284.mode) {
+ case IEEE1284_MODE_EPP:
+ case IEEE1284_MODE_EPPSL:
+ case IEEE1284_MODE_EPPSWE:
+ /* Terminate from EPP mode. */
+
+ /* Event 68: Set nInit low */
+ parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
+ udelay (50);
+
+ /* Event 69: Set nInit high, nSelectIn low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_SELECT
+ | PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_SELECT
+ | PARPORT_CONTROL_INIT);
+ break;
+
+ case IEEE1284_MODE_ECP:
+ case IEEE1284_MODE_ECPRLE:
+ case IEEE1284_MODE_ECPSWE:
+ /* In ECP we can only terminate from fwd idle phase. */
+ if (port->ieee1284.phase != IEEE1284_PH_FWD_IDLE) {
+ /* Event 47: Set nInit high */
+ parport_frob_control (port,
+ PARPORT_CONTROL_INIT
+ | PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_INIT
+ | PARPORT_CONTROL_AUTOFD);
+
+ /* Event 49: PError goes high */
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT,
+ PARPORT_STATUS_PAPEROUT);
+ if (r)
+ DPRINTK (KERN_INFO "%s: Timeout at event 49\n",
+ port->name);
+
+ parport_data_forward (port);
+ DPRINTK (KERN_DEBUG "%s: ECP direction: forward\n",
+ port->name);
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+ }
+
+ /* fall-though.. */
+
+ default:
+ /* Terminate from all other modes. */
+
+ /* Event 22: Set nSelectIn low, nAutoFd high */
+ parport_frob_control (port,
+ PARPORT_CONTROL_SELECT
+ | PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_SELECT);
+
+ /* Event 24: nAck goes low */
+ r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0);
+ if (r)
+ DPRINTK (KERN_INFO "%s: Timeout at event 24\n",
+ port->name);
+
+ /* Event 25: Set nAutoFd low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+ /* Event 27: nAck goes high */
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ACK);
+ if (r)
+ DPRINTK (KERN_INFO "%s: Timeout at event 27\n",
+ port->name);
+
+ /* Event 29: Set nAutoFd high */
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+ }
+
+ port->ieee1284.mode = IEEE1284_MODE_COMPAT;
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ DPRINTK (KERN_DEBUG "%s: In compatibility (forward idle) mode\n",
+ port->name);
+}
+#endif /* IEEE1284 support */
+
+/**
+ * parport_negotiate - negotiate an IEEE 1284 mode
+ * @port: port to use
+ * @mode: mode to negotiate to
+ *
+ * Use this to negotiate to a particular IEEE 1284 transfer mode.
+ * The @mode parameter should be one of the constants in
+ * parport.h starting %IEEE1284_MODE_xxx.
+ *
+ * The return value is 0 if the peripheral has accepted the
+ * negotiation to the mode specified, -1 if the peripheral is not
+ * IEEE 1284 compliant (or not present), or 1 if the peripheral
+ * has rejected the negotiation.
+ */
+
+int parport_negotiate (struct parport *port, int mode)
+{
+#ifndef CONFIG_PARPORT_1284
+ if (mode == IEEE1284_MODE_COMPAT)
+ return 0;
+ printk (KERN_ERR "parport: IEEE1284 not supported in this kernel\n");
+ return -1;
+#else
+ int m = mode & ~IEEE1284_ADDR;
+ int r;
+ unsigned char xflag;
+
+ port = port->physport;
+
+ /* Is there anything to do? */
+ if (port->ieee1284.mode == mode)
+ return 0;
+
+ /* Is the difference just an address-or-not bit? */
+ if ((port->ieee1284.mode & ~IEEE1284_ADDR) == (mode & ~IEEE1284_ADDR)){
+ port->ieee1284.mode = mode;
+ return 0;
+ }
+
+ /* Go to compability forward idle mode */
+ if (port->ieee1284.mode != IEEE1284_MODE_COMPAT)
+ parport_ieee1284_terminate (port);
+
+ if (mode == IEEE1284_MODE_COMPAT)
+ /* Compatibility mode: no negotiation. */
+ return 0;
+
+ switch (mode) {
+ case IEEE1284_MODE_ECPSWE:
+ m = IEEE1284_MODE_ECP;
+ break;
+ case IEEE1284_MODE_EPPSL:
+ case IEEE1284_MODE_EPPSWE:
+ m = IEEE1284_MODE_EPP;
+ break;
+ case IEEE1284_MODE_BECP:
+ return -ENOSYS; /* FIXME (implement BECP) */
+ }
+
+ if (mode & IEEE1284_EXT_LINK)
+ m = 1<<7; /* request extensibility link */
+
+ port->ieee1284.phase = IEEE1284_PH_NEGOTIATION;
+
+ /* Start off with nStrobe and nAutoFd high, and nSelectIn low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE
+ | PARPORT_CONTROL_AUTOFD
+ | PARPORT_CONTROL_SELECT,
+ PARPORT_CONTROL_SELECT);
+ udelay(1);
+
+ /* Event 0: Set data */
+ parport_data_forward (port);
+ parport_write_data (port, m);
+ udelay (400); /* Shouldn't need to wait this long. */
+
+ /* Event 1: Set nSelectIn high, nAutoFd low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_SELECT
+ | PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+ /* Event 2: PError, Select, nFault go high, nAck goes low */
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ERROR
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_PAPEROUT
+ | PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ERROR
+ | PARPORT_STATUS_SELECT
+ | PARPORT_STATUS_PAPEROUT)) {
+ /* Timeout */
+ parport_frob_control (port,
+ PARPORT_CONTROL_SELECT
+ | PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_SELECT);
+ DPRINTK (KERN_DEBUG
+ "%s: Peripheral not IEEE1284 compliant (0x%02X)\n",
+ port->name, parport_read_status (port));
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+ return -1; /* Not IEEE1284 compliant */
+ }
+
+ /* Event 3: Set nStrobe low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+
+ /* Event 4: Set nStrobe and nAutoFd high */
+ udelay (5);
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE
+ | PARPORT_CONTROL_AUTOFD,
+ 0);
+
+ /* Event 6: nAck goes high */
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ACK)) {
+ /* This shouldn't really happen with a compliant device. */
+ DPRINTK (KERN_DEBUG
+ "%s: Mode 0x%02x not supported? (0x%02x)\n",
+ port->name, mode, port->ops->read_status (port));
+ parport_ieee1284_terminate (port);
+ return 1;
+ }
+
+ xflag = parport_read_status (port) & PARPORT_STATUS_SELECT;
+
+ /* xflag should be high for all modes other than nibble (0). */
+ if (mode && !xflag) {
+ /* Mode not supported. */
+ DPRINTK (KERN_DEBUG "%s: Mode 0x%02x rejected by peripheral\n",
+ port->name, mode);
+ parport_ieee1284_terminate (port);
+ return 1;
+ }
+
+ /* More to do if we've requested extensibility link. */
+ if (mode & IEEE1284_EXT_LINK) {
+ m = mode & 0x7f;
+ udelay (1);
+ parport_write_data (port, m);
+ udelay (1);
+
+ /* Event 51: Set nStrobe low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+
+ /* Event 52: nAck goes low */
+ if (parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0)) {
+ /* This peripheral is _very_ slow. */
+ DPRINTK (KERN_DEBUG
+ "%s: Event 52 didn't happen\n",
+ port->name);
+ parport_ieee1284_terminate (port);
+ return 1;
+ }
+
+ /* Event 53: Set nStrobe high */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ 0);
+
+ /* Event 55: nAck goes high */
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ACK)) {
+ /* This shouldn't really happen with a compliant
+ * device. */
+ DPRINTK (KERN_DEBUG
+ "%s: Mode 0x%02x not supported? (0x%02x)\n",
+ port->name, mode,
+ port->ops->read_status (port));
+ parport_ieee1284_terminate (port);
+ return 1;
+ }
+
+ /* Event 54: Peripheral sets XFlag to reflect support */
+ xflag = parport_read_status (port) & PARPORT_STATUS_SELECT;
+
+ /* xflag should be high. */
+ if (!xflag) {
+ /* Extended mode not supported. */
+ DPRINTK (KERN_DEBUG "%s: Extended mode 0x%02x not "
+ "supported\n", port->name, mode);
+ parport_ieee1284_terminate (port);
+ return 1;
+ }
+
+ /* Any further setup is left to the caller. */
+ }
+
+ /* Mode is supported */
+ DPRINTK (KERN_DEBUG "%s: In mode 0x%02x\n", port->name, mode);
+ port->ieee1284.mode = mode;
+
+ /* But ECP is special */
+ if (!(mode & IEEE1284_EXT_LINK) && (m & IEEE1284_MODE_ECP)) {
+ port->ieee1284.phase = IEEE1284_PH_ECP_SETUP;
+
+ /* Event 30: Set nAutoFd low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+ /* Event 31: PError goes high. */
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT,
+ PARPORT_STATUS_PAPEROUT);
+ if (r) {
+ DPRINTK (KERN_INFO "%s: Timeout at event 31\n",
+ port->name);
+ }
+
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+ DPRINTK (KERN_DEBUG "%s: ECP direction: forward\n",
+ port->name);
+ } else switch (mode) {
+ case IEEE1284_MODE_NIBBLE:
+ case IEEE1284_MODE_BYTE:
+ port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+ break;
+ default:
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+ }
+
+
+ return 0;
+#endif /* IEEE1284 support */
+}
+
+/* Acknowledge that the peripheral has data available.
+ * Events 18-20, in order to get from Reverse Idle phase
+ * to Host Busy Data Available.
+ * This will most likely be called from an interrupt.
+ * Returns zero if data was available.
+ */
+#ifdef CONFIG_PARPORT_1284
+static int parport_ieee1284_ack_data_avail (struct parport *port)
+{
+ if (parport_read_status (port) & PARPORT_STATUS_ERROR)
+ /* Event 18 didn't happen. */
+ return -1;
+
+ /* Event 20: nAutoFd goes high. */
+ port->ops->frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+ port->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;
+ return 0;
+}
+#endif /* IEEE1284 support */
+
+/* Handle an interrupt. */
+void parport_ieee1284_interrupt (int which, void *handle, struct pt_regs *regs)
+{
+ struct parport *port = handle;
+ parport_ieee1284_wakeup (port);
+
+#ifdef CONFIG_PARPORT_1284
+ if (port->ieee1284.phase == IEEE1284_PH_REV_IDLE) {
+ /* An interrupt in this phase means that data
+ * is now available. */
+ DPRINTK (KERN_DEBUG "%s: Data available\n", port->name);
+ parport_ieee1284_ack_data_avail (port);
+ }
+#endif /* IEEE1284 support */
+}
+
+/**
+ * parport_write - write a block of data to a parallel port
+ * @port: port to write to
+ * @buffer: data buffer (in kernel space)
+ * @len: number of bytes of data to transfer
+ *
+ * This will write up to @len bytes of @buffer to the port
+ * specified, using the IEEE 1284 transfer mode most recently
+ * negotiated to (using parport_negotiate()), as long as that
+ * mode supports forward transfers (host to peripheral).
+ *
+ * It is the caller's responsibility to ensure that the first
+ * @len bytes of @buffer are valid.
+ *
+ * This function returns the number of bytes transferred (if zero
+ * or positive), or else an error code.
+ */
+
+ssize_t parport_write (struct parport *port, const void *buffer, size_t len)
+{
+#ifndef CONFIG_PARPORT_1284
+ return port->ops->compat_write_data (port, buffer, len, 0);
+#else
+ ssize_t retval;
+ int mode = port->ieee1284.mode;
+ int addr = mode & IEEE1284_ADDR;
+ size_t (*fn) (struct parport *, const void *, size_t, int);
+
+ /* Ignore the device-ID-request bit and the address bit. */
+ mode &= ~(IEEE1284_DEVICEID | IEEE1284_ADDR);
+
+ /* Use the mode we're in. */
+ switch (mode) {
+ case IEEE1284_MODE_NIBBLE:
+ case IEEE1284_MODE_BYTE:
+ parport_negotiate (port, IEEE1284_MODE_COMPAT);
+ case IEEE1284_MODE_COMPAT:
+ DPRINTK (KERN_DEBUG "%s: Using compatibility mode\n",
+ port->name);
+ fn = port->ops->compat_write_data;
+ break;
+
+ case IEEE1284_MODE_EPP:
+ DPRINTK (KERN_DEBUG "%s: Using EPP mode\n", port->name);
+ if (addr) {
+ fn = port->ops->epp_write_addr;
+ } else {
+ fn = port->ops->epp_write_data;
+ }
+ break;
+ case IEEE1284_MODE_EPPSWE:
+ DPRINTK (KERN_DEBUG "%s: Using software-emulated EPP mode\n",
+ port->name);
+ if (addr) {
+ fn = parport_ieee1284_epp_write_addr;
+ } else {
+ fn = parport_ieee1284_epp_write_data;
+ }
+ break;
+ case IEEE1284_MODE_ECP:
+ case IEEE1284_MODE_ECPRLE:
+ DPRINTK (KERN_DEBUG "%s: Using ECP mode\n", port->name);
+ if (addr) {
+ fn = port->ops->ecp_write_addr;
+ } else {
+ fn = port->ops->ecp_write_data;
+ }
+ break;
+
+ case IEEE1284_MODE_ECPSWE:
+ DPRINTK (KERN_DEBUG "%s: Using software-emulated ECP mode\n",
+ port->name);
+ /* The caller has specified that it must be emulated,
+ * even if we have ECP hardware! */
+ if (addr) {
+ fn = parport_ieee1284_ecp_write_addr;
+ } else {
+ fn = parport_ieee1284_ecp_write_data;
+ }
+ break;
+
+ default:
+ DPRINTK (KERN_DEBUG "%s: Unknown mode 0x%02x\n", port->name,
+ port->ieee1284.mode);
+ return -ENOSYS;
+ }
+
+ retval = (*fn) (port, buffer, len, 0);
+ DPRINTK (KERN_DEBUG "%s: wrote %d/%d bytes\n", port->name, retval, len);
+ return retval;
+#endif /* IEEE1284 support */
+}
+
+/**
+ * parport_read - read a block of data from a parallel port
+ * @port: port to read from
+ * @buffer: data buffer (in kernel space)
+ * @len: number of bytes of data to transfer
+ *
+ * This will read up to @len bytes of @buffer to the port
+ * specified, using the IEEE 1284 transfer mode most recently
+ * negotiated to (using parport_negotiate()), as long as that
+ * mode supports reverse transfers (peripheral to host).
+ *
+ * It is the caller's responsibility to ensure that the first
+ * @len bytes of @buffer are available to write to.
+ *
+ * This function returns the number of bytes transferred (if zero
+ * or positive), or else an error code.
+ */
+
+ssize_t parport_read (struct parport *port, void *buffer, size_t len)
+{
+#ifndef CONFIG_PARPORT_1284
+ printk (KERN_ERR "parport: IEEE1284 not supported in this kernel\n");
+ return -ENODEV;
+#else
+ int mode = port->physport->ieee1284.mode;
+ int addr = mode & IEEE1284_ADDR;
+ size_t (*fn) (struct parport *, void *, size_t, int);
+
+ /* Ignore the device-ID-request bit and the address bit. */
+ mode &= ~(IEEE1284_DEVICEID | IEEE1284_ADDR);
+
+ /* Use the mode we're in. */
+ switch (mode) {
+ case IEEE1284_MODE_COMPAT:
+ /* if we can tri-state use BYTE mode instead of NIBBLE mode,
+ * if that fails, revert to NIBBLE mode -- ought to store somewhere
+ * the device's ability to do BYTE mode reverse transfers, so we don't
+ * end up needlessly calling negotiate(BYTE) repeately.. (fb)
+ */
+ if ((port->physport->modes & PARPORT_MODE_TRISTATE) &&
+ !parport_negotiate (port, IEEE1284_MODE_BYTE)) {
+ /* got into BYTE mode OK */
+ DPRINTK (KERN_DEBUG "%s: Using byte mode\n", port->name);
+ fn = port->ops->byte_read_data;
+ break;
+ }
+ if (parport_negotiate (port, IEEE1284_MODE_NIBBLE)) {
+ return -EIO;
+ }
+ /* fall through to NIBBLE */
+ case IEEE1284_MODE_NIBBLE:
+ DPRINTK (KERN_DEBUG "%s: Using nibble mode\n", port->name);
+ fn = port->ops->nibble_read_data;
+ break;
+
+ case IEEE1284_MODE_BYTE:
+ DPRINTK (KERN_DEBUG "%s: Using byte mode\n", port->name);
+ fn = port->ops->byte_read_data;
+ break;
+
+ case IEEE1284_MODE_EPP:
+ DPRINTK (KERN_DEBUG "%s: Using EPP mode\n", port->name);
+ if (addr) {
+ fn = port->ops->epp_read_addr;
+ } else {
+ fn = port->ops->epp_read_data;
+ }
+ break;
+ case IEEE1284_MODE_EPPSWE:
+ DPRINTK (KERN_DEBUG "%s: Using software-emulated EPP mode\n",
+ port->name);
+ if (addr) {
+ fn = parport_ieee1284_epp_read_addr;
+ } else {
+ fn = parport_ieee1284_epp_read_data;
+ }
+ break;
+ case IEEE1284_MODE_ECP:
+ case IEEE1284_MODE_ECPRLE:
+ DPRINTK (KERN_DEBUG "%s: Using ECP mode\n", port->name);
+ fn = port->ops->ecp_read_data;
+ break;
+
+ case IEEE1284_MODE_ECPSWE:
+ DPRINTK (KERN_DEBUG "%s: Using software-emulated ECP mode\n",
+ port->name);
+ fn = parport_ieee1284_ecp_read_data;
+ break;
+
+ default:
+ DPRINTK (KERN_DEBUG "%s: Unknown mode 0x%02x\n", port->name,
+ port->physport->ieee1284.mode);
+ return -ENOSYS;
+ }
+
+ return (*fn) (port, buffer, len, 0);
+#endif /* IEEE1284 support */
+}
+
+/**
+ * parport_set_timeout - set the inactivity timeout for a device
+ * @dev: device on a port
+ * @inactivity: inactivity timeout (in jiffies)
+ *
+ * This sets the inactivity timeout for a particular device on a
+ * port. This affects functions like parport_wait_peripheral().
+ * The special value 0 means not to call schedule() while dealing
+ * with this device.
+ *
+ * The return value is the previous inactivity timeout.
+ *
+ * Any callers of parport_wait_event() for this device are woken
+ * up.
+ */
+
+long parport_set_timeout (struct pardevice *dev, long inactivity)
+{
+ long int old = dev->timeout;
+
+ dev->timeout = inactivity;
+
+ if (dev->port->physport->cad == dev)
+ parport_ieee1284_wakeup (dev->port);
+
+ return old;
+}
+
+/* Exported symbols for modules. */
+
+EXPORT_SYMBOL(parport_negotiate);
+EXPORT_SYMBOL(parport_write);
+EXPORT_SYMBOL(parport_read);
+EXPORT_SYMBOL(parport_wait_peripheral);
+EXPORT_SYMBOL(parport_wait_event);
+EXPORT_SYMBOL(parport_set_timeout);
+EXPORT_SYMBOL(parport_ieee1284_interrupt);
diff --git a/drivers/parport/ieee1284_ops.c b/drivers/parport/ieee1284_ops.c
new file mode 100644
index 000000000000..6624278c6ed8
--- /dev/null
+++ b/drivers/parport/ieee1284_ops.c
@@ -0,0 +1,921 @@
+/* IEEE-1284 operations for parport.
+ *
+ * This file is for generic IEEE 1284 operations. The idea is that
+ * they are used by the low-level drivers. If they have a special way
+ * of doing something, they can provide their own routines (and put
+ * the function pointers in port->ops); if not, they can just use these
+ * as a fallback.
+ *
+ * Note: Make no assumptions about hardware or architecture in this file!
+ *
+ * Author: Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Fixed AUTOFD polarity in ecp_forward_to_reverse(). Fred Barnes, 1999
+ * Software emulated EPP fixes, Fred Barnes, 04/2001.
+ */
+
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/parport.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <asm/uaccess.h>
+
+#undef DEBUG /* undef me for production */
+
+#ifdef CONFIG_LP_CONSOLE
+#undef DEBUG /* Don't want a garbled console */
+#endif
+
+#ifdef DEBUG
+#define DPRINTK(stuff...) printk (stuff)
+#else
+#define DPRINTK(stuff...)
+#endif
+
+/*** *
+ * One-way data transfer functions. *
+ * ***/
+
+/* Compatibility mode. */
+size_t parport_ieee1284_write_compat (struct parport *port,
+ const void *buffer, size_t len,
+ int flags)
+{
+ int no_irq = 1;
+ ssize_t count = 0;
+ const unsigned char *addr = buffer;
+ unsigned char byte;
+ struct pardevice *dev = port->physport->cad;
+ unsigned char ctl = (PARPORT_CONTROL_SELECT
+ | PARPORT_CONTROL_INIT);
+
+ if (port->irq != PARPORT_IRQ_NONE) {
+ parport_enable_irq (port);
+ no_irq = 0;
+ }
+
+ port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
+ parport_write_control (port, ctl);
+ parport_data_forward (port);
+ while (count < len) {
+ unsigned long expire = jiffies + dev->timeout;
+ long wait = (HZ + 99) / 100;
+ unsigned char mask = (PARPORT_STATUS_ERROR
+ | PARPORT_STATUS_BUSY);
+ unsigned char val = (PARPORT_STATUS_ERROR
+ | PARPORT_STATUS_BUSY);
+
+ /* Wait until the peripheral's ready */
+ do {
+ /* Is the peripheral ready yet? */
+ if (!parport_wait_peripheral (port, mask, val))
+ /* Skip the loop */
+ goto ready;
+
+ /* Is the peripheral upset? */
+ if ((parport_read_status (port) &
+ (PARPORT_STATUS_PAPEROUT |
+ PARPORT_STATUS_SELECT |
+ PARPORT_STATUS_ERROR))
+ != (PARPORT_STATUS_SELECT |
+ PARPORT_STATUS_ERROR))
+ /* If nFault is asserted (i.e. no
+ * error) and PAPEROUT and SELECT are
+ * just red herrings, give the driver
+ * a chance to check it's happy with
+ * that before continuing. */
+ goto stop;
+
+ /* Have we run out of time? */
+ if (!time_before (jiffies, expire))
+ break;
+
+ /* Yield the port for a while. If this is the
+ first time around the loop, don't let go of
+ the port. This way, we find out if we have
+ our interrupt handler called. */
+ if (count && no_irq) {
+ parport_release (dev);
+ __set_current_state (TASK_INTERRUPTIBLE);
+ schedule_timeout (wait);
+ parport_claim_or_block (dev);
+ }
+ else
+ /* We must have the device claimed here */
+ parport_wait_event (port, wait);
+
+ /* Is there a signal pending? */
+ if (signal_pending (current))
+ break;
+
+ /* Wait longer next time. */
+ wait *= 2;
+ } while (time_before (jiffies, expire));
+
+ if (signal_pending (current))
+ break;
+
+ DPRINTK (KERN_DEBUG "%s: Timed out\n", port->name);
+ break;
+
+ ready:
+ /* Write the character to the data lines. */
+ byte = *addr++;
+ parport_write_data (port, byte);
+ udelay (1);
+
+ /* Pulse strobe. */
+ parport_write_control (port, ctl | PARPORT_CONTROL_STROBE);
+ udelay (1); /* strobe */
+
+ parport_write_control (port, ctl);
+ udelay (1); /* hold */
+
+ /* Assume the peripheral received it. */
+ count++;
+
+ /* Let another process run if it needs to. */
+ if (time_before (jiffies, expire))
+ if (!parport_yield_blocking (dev)
+ && need_resched())
+ schedule ();
+ }
+ stop:
+ port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ return count;
+}
+
+/* Nibble mode. */
+size_t parport_ieee1284_read_nibble (struct parport *port,
+ void *buffer, size_t len,
+ int flags)
+{
+#ifndef CONFIG_PARPORT_1284
+ return 0;
+#else
+ unsigned char *buf = buffer;
+ int i;
+ unsigned char byte = 0;
+
+ len *= 2; /* in nibbles */
+ for (i=0; i < len; i++) {
+ unsigned char nibble;
+
+ /* Does the error line indicate end of data? */
+ if (((i & 1) == 0) &&
+ (parport_read_status(port) & PARPORT_STATUS_ERROR)) {
+ port->physport->ieee1284.phase = IEEE1284_PH_HBUSY_DNA;
+ DPRINTK (KERN_DEBUG
+ "%s: No more nibble data (%d bytes)\n",
+ port->name, i/2);
+
+ /* Go to reverse idle phase. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+ port->physport->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+ break;
+ }
+
+ /* Event 7: Set nAutoFd low. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+ /* Event 9: nAck goes low. */
+ port->ieee1284.phase = IEEE1284_PH_REV_DATA;
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK, 0)) {
+ /* Timeout -- no more data? */
+ DPRINTK (KERN_DEBUG
+ "%s: Nibble timeout at event 9 (%d bytes)\n",
+ port->name, i/2);
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+ break;
+ }
+
+
+ /* Read a nibble. */
+ nibble = parport_read_status (port) >> 3;
+ nibble &= ~8;
+ if ((nibble & 0x10) == 0)
+ nibble |= 8;
+ nibble &= 0xf;
+
+ /* Event 10: Set nAutoFd high. */
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+
+ /* Event 11: nAck goes high. */
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ACK)) {
+ /* Timeout -- no more data? */
+ DPRINTK (KERN_DEBUG
+ "%s: Nibble timeout at event 11\n",
+ port->name);
+ break;
+ }
+
+ if (i & 1) {
+ /* Second nibble */
+ byte |= nibble << 4;
+ *buf++ = byte;
+ } else
+ byte = nibble;
+ }
+
+ i /= 2; /* i is now in bytes */
+
+ if (i == len) {
+ /* Read the last nibble without checking data avail. */
+ port = port->physport;
+ if (parport_read_status (port) & PARPORT_STATUS_ERROR)
+ port->ieee1284.phase = IEEE1284_PH_HBUSY_DNA;
+ else
+ port->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;
+ }
+
+ return i;
+#endif /* IEEE1284 support */
+}
+
+/* Byte mode. */
+size_t parport_ieee1284_read_byte (struct parport *port,
+ void *buffer, size_t len,
+ int flags)
+{
+#ifndef CONFIG_PARPORT_1284
+ return 0;
+#else
+ unsigned char *buf = buffer;
+ ssize_t count = 0;
+
+ for (count = 0; count < len; count++) {
+ unsigned char byte;
+
+ /* Data available? */
+ if (parport_read_status (port) & PARPORT_STATUS_ERROR) {
+ port->physport->ieee1284.phase = IEEE1284_PH_HBUSY_DNA;
+ DPRINTK (KERN_DEBUG
+ "%s: No more byte data (%Zd bytes)\n",
+ port->name, count);
+
+ /* Go to reverse idle phase. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+ port->physport->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+ break;
+ }
+
+ /* Event 14: Place data bus in high impedance state. */
+ parport_data_reverse (port);
+
+ /* Event 7: Set nAutoFd low. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+ /* Event 9: nAck goes low. */
+ port->physport->ieee1284.phase = IEEE1284_PH_REV_DATA;
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK,
+ 0)) {
+ /* Timeout -- no more data? */
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD,
+ 0);
+ DPRINTK (KERN_DEBUG "%s: Byte timeout at event 9\n",
+ port->name);
+ break;
+ }
+
+ byte = parport_read_data (port);
+ *buf++ = byte;
+
+ /* Event 10: Set nAutoFd high */
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+
+ /* Event 11: nAck goes high. */
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ACK)) {
+ /* Timeout -- no more data? */
+ DPRINTK (KERN_DEBUG "%s: Byte timeout at event 11\n",
+ port->name);
+ break;
+ }
+
+ /* Event 16: Set nStrobe low. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+ udelay (5);
+
+ /* Event 17: Set nStrobe high. */
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+ }
+
+ if (count == len) {
+ /* Read the last byte without checking data avail. */
+ port = port->physport;
+ if (parport_read_status (port) & PARPORT_STATUS_ERROR)
+ port->ieee1284.phase = IEEE1284_PH_HBUSY_DNA;
+ else
+ port->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;
+ }
+
+ return count;
+#endif /* IEEE1284 support */
+}
+
+/*** *
+ * ECP Functions. *
+ * ***/
+
+#ifdef CONFIG_PARPORT_1284
+
+static inline
+int ecp_forward_to_reverse (struct parport *port)
+{
+ int retval;
+
+ /* Event 38: Set nAutoFd low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+ parport_data_reverse (port);
+ udelay (5);
+
+ /* Event 39: Set nInit low to initiate bus reversal */
+ parport_frob_control (port,
+ PARPORT_CONTROL_INIT,
+ 0);
+
+ /* Event 40: PError goes low */
+ retval = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT, 0);
+
+ if (!retval) {
+ DPRINTK (KERN_DEBUG "%s: ECP direction: reverse\n",
+ port->name);
+ port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+ } else {
+ DPRINTK (KERN_DEBUG "%s: ECP direction: failed to reverse\n",
+ port->name);
+ port->ieee1284.phase = IEEE1284_PH_ECP_DIR_UNKNOWN;
+ }
+
+ return retval;
+}
+
+static inline
+int ecp_reverse_to_forward (struct parport *port)
+{
+ int retval;
+
+ /* Event 47: Set nInit high */
+ parport_frob_control (port,
+ PARPORT_CONTROL_INIT
+ | PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_INIT
+ | PARPORT_CONTROL_AUTOFD);
+
+ /* Event 49: PError goes high */
+ retval = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT,
+ PARPORT_STATUS_PAPEROUT);
+
+ if (!retval) {
+ parport_data_forward (port);
+ DPRINTK (KERN_DEBUG "%s: ECP direction: forward\n",
+ port->name);
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+ } else {
+ DPRINTK (KERN_DEBUG
+ "%s: ECP direction: failed to switch forward\n",
+ port->name);
+ port->ieee1284.phase = IEEE1284_PH_ECP_DIR_UNKNOWN;
+ }
+
+
+ return retval;
+}
+
+#endif /* IEEE1284 support */
+
+/* ECP mode, forward channel, data. */
+size_t parport_ieee1284_ecp_write_data (struct parport *port,
+ const void *buffer, size_t len,
+ int flags)
+{
+#ifndef CONFIG_PARPORT_1284
+ return 0;
+#else
+ const unsigned char *buf = buffer;
+ size_t written;
+ int retry;
+
+ port = port->physport;
+
+ if (port->ieee1284.phase != IEEE1284_PH_FWD_IDLE)
+ if (ecp_reverse_to_forward (port))
+ return 0;
+
+ port->ieee1284.phase = IEEE1284_PH_FWD_DATA;
+
+ /* HostAck high (data, not command) */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD
+ | PARPORT_CONTROL_STROBE
+ | PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_INIT);
+ for (written = 0; written < len; written++, buf++) {
+ unsigned long expire = jiffies + port->cad->timeout;
+ unsigned char byte;
+
+ byte = *buf;
+ try_again:
+ parport_write_data (port, byte);
+ parport_frob_control (port, PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+ udelay (5);
+ for (retry = 0; retry < 100; retry++) {
+ if (!parport_wait_peripheral (port,
+ PARPORT_STATUS_BUSY, 0))
+ goto success;
+
+ if (signal_pending (current)) {
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ 0);
+ break;
+ }
+ }
+
+ /* Time for Host Transfer Recovery (page 41 of IEEE1284) */
+ DPRINTK (KERN_DEBUG "%s: ECP transfer stalled!\n", port->name);
+
+ parport_frob_control (port, PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_INIT);
+ udelay (50);
+ if (parport_read_status (port) & PARPORT_STATUS_PAPEROUT) {
+ /* It's buggered. */
+ parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
+ break;
+ }
+
+ parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
+ udelay (50);
+ if (!(parport_read_status (port) & PARPORT_STATUS_PAPEROUT))
+ break;
+
+ DPRINTK (KERN_DEBUG "%s: Host transfer recovered\n",
+ port->name);
+
+ if (time_after_eq (jiffies, expire)) break;
+ goto try_again;
+ success:
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+ udelay (5);
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY))
+ /* Peripheral hasn't accepted the data. */
+ break;
+ }
+
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ return written;
+#endif /* IEEE1284 support */
+}
+
+/* ECP mode, reverse channel, data. */
+size_t parport_ieee1284_ecp_read_data (struct parport *port,
+ void *buffer, size_t len, int flags)
+{
+#ifndef CONFIG_PARPORT_1284
+ return 0;
+#else
+ struct pardevice *dev = port->cad;
+ unsigned char *buf = buffer;
+ int rle_count = 0; /* shut gcc up */
+ unsigned char ctl;
+ int rle = 0;
+ ssize_t count = 0;
+
+ port = port->physport;
+
+ if (port->ieee1284.phase != IEEE1284_PH_REV_IDLE)
+ if (ecp_forward_to_reverse (port))
+ return 0;
+
+ port->ieee1284.phase = IEEE1284_PH_REV_DATA;
+
+ /* Set HostAck low to start accepting data. */
+ ctl = parport_read_control (port);
+ ctl &= ~(PARPORT_CONTROL_STROBE | PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_AUTOFD);
+ parport_write_control (port,
+ ctl | PARPORT_CONTROL_AUTOFD);
+ while (count < len) {
+ unsigned long expire = jiffies + dev->timeout;
+ unsigned char byte;
+ int command;
+
+ /* Event 43: Peripheral sets nAck low. It can take as
+ long as it wants. */
+ while (parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0)) {
+ /* The peripheral hasn't given us data in
+ 35ms. If we have data to give back to the
+ caller, do it now. */
+ if (count)
+ goto out;
+
+ /* If we've used up all the time we were allowed,
+ give up altogether. */
+ if (!time_before (jiffies, expire))
+ goto out;
+
+ /* Yield the port for a while. */
+ if (count && dev->port->irq != PARPORT_IRQ_NONE) {
+ parport_release (dev);
+ __set_current_state (TASK_INTERRUPTIBLE);
+ schedule_timeout ((HZ + 24) / 25);
+ parport_claim_or_block (dev);
+ }
+ else
+ /* We must have the device claimed here. */
+ parport_wait_event (port, (HZ + 24) / 25);
+
+ /* Is there a signal pending? */
+ if (signal_pending (current))
+ goto out;
+ }
+
+ /* Is this a command? */
+ if (rle)
+ /* The last byte was a run-length count, so
+ this can't be as well. */
+ command = 0;
+ else
+ command = (parport_read_status (port) &
+ PARPORT_STATUS_BUSY) ? 1 : 0;
+
+ /* Read the data. */
+ byte = parport_read_data (port);
+
+ /* If this is a channel command, rather than an RLE
+ command or a normal data byte, don't accept it. */
+ if (command) {
+ if (byte & 0x80) {
+ DPRINTK (KERN_DEBUG "%s: stopping short at "
+ "channel command (%02x)\n",
+ port->name, byte);
+ goto out;
+ }
+ else if (port->ieee1284.mode != IEEE1284_MODE_ECPRLE)
+ DPRINTK (KERN_DEBUG "%s: device illegally "
+ "using RLE; accepting anyway\n",
+ port->name);
+
+ rle_count = byte + 1;
+
+ /* Are we allowed to read that many bytes? */
+ if (rle_count > (len - count)) {
+ DPRINTK (KERN_DEBUG "%s: leaving %d RLE bytes "
+ "for next time\n", port->name,
+ rle_count);
+ break;
+ }
+
+ rle = 1;
+ }
+
+ /* Event 44: Set HostAck high, acknowledging handshake. */
+ parport_write_control (port, ctl);
+
+ /* Event 45: The peripheral has 35ms to set nAck high. */
+ if (parport_wait_peripheral (port, PARPORT_STATUS_ACK,
+ PARPORT_STATUS_ACK)) {
+ /* It's gone wrong. Return what data we have
+ to the caller. */
+ DPRINTK (KERN_DEBUG "ECP read timed out at 45\n");
+
+ if (command)
+ printk (KERN_WARNING
+ "%s: command ignored (%02x)\n",
+ port->name, byte);
+
+ break;
+ }
+
+ /* Event 46: Set HostAck low and accept the data. */
+ parport_write_control (port,
+ ctl | PARPORT_CONTROL_AUTOFD);
+
+ /* If we just read a run-length count, fetch the data. */
+ if (command)
+ continue;
+
+ /* If this is the byte after a run-length count, decompress. */
+ if (rle) {
+ rle = 0;
+ memset (buf, byte, rle_count);
+ buf += rle_count;
+ count += rle_count;
+ DPRINTK (KERN_DEBUG "%s: decompressed to %d bytes\n",
+ port->name, rle_count);
+ } else {
+ /* Normal data byte. */
+ *buf = byte;
+ buf++, count++;
+ }
+ }
+
+ out:
+ port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+ return count;
+#endif /* IEEE1284 support */
+}
+
+/* ECP mode, forward channel, commands. */
+size_t parport_ieee1284_ecp_write_addr (struct parport *port,
+ const void *buffer, size_t len,
+ int flags)
+{
+#ifndef CONFIG_PARPORT_1284
+ return 0;
+#else
+ const unsigned char *buf = buffer;
+ size_t written;
+ int retry;
+
+ port = port->physport;
+
+ if (port->ieee1284.phase != IEEE1284_PH_FWD_IDLE)
+ if (ecp_reverse_to_forward (port))
+ return 0;
+
+ port->ieee1284.phase = IEEE1284_PH_FWD_DATA;
+
+ /* HostAck low (command, not data) */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD
+ | PARPORT_CONTROL_STROBE
+ | PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_AUTOFD
+ | PARPORT_CONTROL_INIT);
+ for (written = 0; written < len; written++, buf++) {
+ unsigned long expire = jiffies + port->cad->timeout;
+ unsigned char byte;
+
+ byte = *buf;
+ try_again:
+ parport_write_data (port, byte);
+ parport_frob_control (port, PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_STROBE);
+ udelay (5);
+ for (retry = 0; retry < 100; retry++) {
+ if (!parport_wait_peripheral (port,
+ PARPORT_STATUS_BUSY, 0))
+ goto success;
+
+ if (signal_pending (current)) {
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE,
+ 0);
+ break;
+ }
+ }
+
+ /* Time for Host Transfer Recovery (page 41 of IEEE1284) */
+ DPRINTK (KERN_DEBUG "%s: ECP transfer stalled!\n", port->name);
+
+ parport_frob_control (port, PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_INIT);
+ udelay (50);
+ if (parport_read_status (port) & PARPORT_STATUS_PAPEROUT) {
+ /* It's buggered. */
+ parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
+ break;
+ }
+
+ parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
+ udelay (50);
+ if (!(parport_read_status (port) & PARPORT_STATUS_PAPEROUT))
+ break;
+
+ DPRINTK (KERN_DEBUG "%s: Host transfer recovered\n",
+ port->name);
+
+ if (time_after_eq (jiffies, expire)) break;
+ goto try_again;
+ success:
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+ udelay (5);
+ if (parport_wait_peripheral (port,
+ PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY))
+ /* Peripheral hasn't accepted the data. */
+ break;
+ }
+
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ return written;
+#endif /* IEEE1284 support */
+}
+
+/*** *
+ * EPP functions. *
+ * ***/
+
+/* EPP mode, forward channel, data. */
+size_t parport_ieee1284_epp_write_data (struct parport *port,
+ const void *buffer, size_t len,
+ int flags)
+{
+ unsigned char *bp = (unsigned char *) buffer;
+ size_t ret = 0;
+
+ /* set EPP idle state (just to make sure) with strobe low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_SELECT |
+ PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_INIT);
+ port->ops->data_forward (port);
+ for (; len > 0; len--, bp++) {
+ /* Event 62: Write data and set autofd low */
+ parport_write_data (port, *bp);
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+ /* Event 58: wait for busy (nWait) to go high */
+ if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY, 0, 10))
+ break;
+
+ /* Event 63: set nAutoFd (nDStrb) high */
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+
+ /* Event 60: wait for busy (nWait) to go low */
+ if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY, 5))
+ break;
+
+ ret++;
+ }
+
+ /* Event 61: set strobe (nWrite) high */
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+
+ return ret;
+}
+
+/* EPP mode, reverse channel, data. */
+size_t parport_ieee1284_epp_read_data (struct parport *port,
+ void *buffer, size_t len,
+ int flags)
+{
+ unsigned char *bp = (unsigned char *) buffer;
+ unsigned ret = 0;
+
+ /* set EPP idle state (just to make sure) with strobe high */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_SELECT |
+ PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_INIT);
+ port->ops->data_reverse (port);
+ for (; len > 0; len--, bp++) {
+ /* Event 67: set nAutoFd (nDStrb) low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+ /* Event 58: wait for Busy to go high */
+ if (parport_wait_peripheral (port, PARPORT_STATUS_BUSY, 0)) {
+ break;
+ }
+
+ *bp = parport_read_data (port);
+
+ /* Event 63: set nAutoFd (nDStrb) high */
+ parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);
+
+ /* Event 60: wait for Busy to go low */
+ if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY, 5)) {
+ break;
+ }
+
+ ret++;
+ }
+ port->ops->data_forward (port);
+
+ return ret;
+}
+
+/* EPP mode, forward channel, addresses. */
+size_t parport_ieee1284_epp_write_addr (struct parport *port,
+ const void *buffer, size_t len,
+ int flags)
+{
+ unsigned char *bp = (unsigned char *) buffer;
+ size_t ret = 0;
+
+ /* set EPP idle state (just to make sure) with strobe low */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_SELECT |
+ PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_INIT);
+ port->ops->data_forward (port);
+ for (; len > 0; len--, bp++) {
+ /* Event 56: Write data and set nAStrb low. */
+ parport_write_data (port, *bp);
+ parport_frob_control (port, PARPORT_CONTROL_SELECT,
+ PARPORT_CONTROL_SELECT);
+
+ /* Event 58: wait for busy (nWait) to go high */
+ if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY, 0, 10))
+ break;
+
+ /* Event 59: set nAStrb high */
+ parport_frob_control (port, PARPORT_CONTROL_SELECT, 0);
+
+ /* Event 60: wait for busy (nWait) to go low */
+ if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY, 5))
+ break;
+
+ ret++;
+ }
+
+ /* Event 61: set strobe (nWrite) high */
+ parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+
+ return ret;
+}
+
+/* EPP mode, reverse channel, addresses. */
+size_t parport_ieee1284_epp_read_addr (struct parport *port,
+ void *buffer, size_t len,
+ int flags)
+{
+ unsigned char *bp = (unsigned char *) buffer;
+ unsigned ret = 0;
+
+ /* Set EPP idle state (just to make sure) with strobe high */
+ parport_frob_control (port,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_SELECT |
+ PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_INIT);
+ port->ops->data_reverse (port);
+ for (; len > 0; len--, bp++) {
+ /* Event 64: set nSelectIn (nAStrb) low */
+ parport_frob_control (port, PARPORT_CONTROL_SELECT,
+ PARPORT_CONTROL_SELECT);
+
+ /* Event 58: wait for Busy to go high */
+ if (parport_wait_peripheral (port, PARPORT_STATUS_BUSY, 0)) {
+ break;
+ }
+
+ *bp = parport_read_data (port);
+
+ /* Event 59: set nSelectIn (nAStrb) high */
+ parport_frob_control (port, PARPORT_CONTROL_SELECT,
+ PARPORT_CONTROL_SELECT);
+
+ /* Event 60: wait for Busy to go low */
+ if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY, 5))
+ break;
+
+ ret++;
+ }
+ port->ops->data_forward (port);
+
+ return ret;
+}
+
+EXPORT_SYMBOL(parport_ieee1284_ecp_write_data);
+EXPORT_SYMBOL(parport_ieee1284_ecp_read_data);
+EXPORT_SYMBOL(parport_ieee1284_ecp_write_addr);
+EXPORT_SYMBOL(parport_ieee1284_write_compat);
+EXPORT_SYMBOL(parport_ieee1284_read_nibble);
+EXPORT_SYMBOL(parport_ieee1284_read_byte);
+EXPORT_SYMBOL(parport_ieee1284_epp_write_data);
+EXPORT_SYMBOL(parport_ieee1284_epp_read_data);
+EXPORT_SYMBOL(parport_ieee1284_epp_write_addr);
+EXPORT_SYMBOL(parport_ieee1284_epp_read_addr);
diff --git a/drivers/parport/multiface.h b/drivers/parport/multiface.h
new file mode 100644
index 000000000000..56769dd5d315
--- /dev/null
+++ b/drivers/parport/multiface.h
@@ -0,0 +1,20 @@
+#ifndef _MULTIFACE_H_
+#define _MULTIFACE_H_
+
+/*
+ * Defines for SerialMaster, Multiface Card II and Multiface Card III
+ * The addresses given below are offsets to the board base address
+ *
+ * 6.11.95 Joerg Dorchain (dorchain@mpi-sb.mpg.de)
+ *
+ */
+
+#define PIA_REG_PADWIDTH 255
+
+#define DUARTBASE 0x0000
+#define PITBASE 0x0100
+#define ROMBASE 0x0200
+#define PIABASE 0x4000
+
+#endif
+
diff --git a/drivers/parport/parport_amiga.c b/drivers/parport/parport_amiga.c
new file mode 100644
index 000000000000..5126e74ac2ec
--- /dev/null
+++ b/drivers/parport/parport_amiga.c
@@ -0,0 +1,293 @@
+/* Low-level parallel port routines for the Amiga built-in port
+ *
+ * Author: Joerg Dorchain <joerg@dorchain.net>
+ *
+ * This is a complete rewrite of the code, but based heaviy upon the old
+ * lp_intern. code.
+ *
+ * The built-in Amiga parallel port provides one port at a fixed address
+ * with 8 bidirectional data lines (D0 - D7) and 3 bidirectional status
+ * lines (BUSY, POUT, SEL), 1 output control line /STROBE (raised automatically
+ * in hardware when the data register is accessed), and 1 input control line
+ * /ACK, able to cause an interrupt, but both not directly settable by
+ * software.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/parport.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <asm/setup.h>
+#include <asm/amigahw.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/amigaints.h>
+
+#undef DEBUG
+#ifdef DEBUG
+#define DPRINTK printk
+#else
+#define DPRINTK(x...) do { } while (0)
+#endif
+
+static struct parport *this_port = NULL;
+
+static void amiga_write_data(struct parport *p, unsigned char data)
+{
+ DPRINTK(KERN_DEBUG "write_data %c\n",data);
+ /* Triggers also /STROBE. This behavior cannot be changed */
+ ciaa.prb = data;
+ mb();
+}
+
+static unsigned char amiga_read_data(struct parport *p)
+{
+ /* Triggers also /STROBE. This behavior cannot be changed */
+ return ciaa.prb;
+}
+
+#if 0
+static unsigned char control_pc_to_amiga(unsigned char control)
+{
+ unsigned char ret = 0;
+
+ if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
+ ;
+ if (control & PARPORT_CONTROL_INIT) /* INITP */
+ /* reset connected to cpu reset pin */;
+ if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
+ /* Not connected */;
+ if (control & PARPORT_CONTROL_STROBE) /* Strobe */
+ /* Handled only directly by hardware */;
+ return ret;
+}
+#endif
+
+static unsigned char control_amiga_to_pc(unsigned char control)
+{
+ return PARPORT_CONTROL_SELECT |
+ PARPORT_CONTROL_AUTOFD | PARPORT_CONTROL_STROBE;
+ /* fake value: interrupt enable, select in, no reset,
+ no autolf, no strobe - seems to be closest the wiring diagram */
+}
+
+static void amiga_write_control(struct parport *p, unsigned char control)
+{
+ DPRINTK(KERN_DEBUG "write_control %02x\n",control);
+ /* No implementation possible */
+}
+
+static unsigned char amiga_read_control( struct parport *p)
+{
+ DPRINTK(KERN_DEBUG "read_control \n");
+ return control_amiga_to_pc(0);
+}
+
+static unsigned char amiga_frob_control( struct parport *p, unsigned char mask, unsigned char val)
+{
+ unsigned char old;
+
+ DPRINTK(KERN_DEBUG "frob_control mask %02x, value %02x\n",mask,val);
+ old = amiga_read_control(p);
+ amiga_write_control(p, (old & ~mask) ^ val);
+ return old;
+}
+
+#if 0 /* currently unused */
+static unsigned char status_pc_to_amiga(unsigned char status)
+{
+ unsigned char ret = 1;
+
+ if (status & PARPORT_STATUS_BUSY) /* Busy */
+ ret &= ~1;
+ if (status & PARPORT_STATUS_ACK) /* Ack */
+ /* handled in hardware */;
+ if (status & PARPORT_STATUS_PAPEROUT) /* PaperOut */
+ ret |= 2;
+ if (status & PARPORT_STATUS_SELECT) /* select */
+ ret |= 4;
+ if (status & PARPORT_STATUS_ERROR) /* error */
+ /* not connected */;
+ return ret;
+}
+#endif
+
+static unsigned char status_amiga_to_pc(unsigned char status)
+{
+ unsigned char ret = PARPORT_STATUS_BUSY | PARPORT_STATUS_ACK | PARPORT_STATUS_ERROR;
+
+ if (status & 1) /* Busy */
+ ret &= ~PARPORT_STATUS_BUSY;
+ if (status & 2) /* PaperOut */
+ ret |= PARPORT_STATUS_PAPEROUT;
+ if (status & 4) /* Selected */
+ ret |= PARPORT_STATUS_SELECT;
+ /* the rest is not connected or handled autonomously in hardware */
+
+ return ret;
+}
+
+static unsigned char amiga_read_status(struct parport *p)
+{
+ unsigned char status;
+
+ status = status_amiga_to_pc(ciab.pra & 7);
+ DPRINTK(KERN_DEBUG "read_status %02x\n", status);
+ return status;
+}
+
+/* as this ports irq handling is already done, we use a generic funktion */
+static irqreturn_t amiga_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ parport_generic_irq(irq, (struct parport *) dev_id, regs);
+ return IRQ_HANDLED;
+}
+
+static void amiga_enable_irq(struct parport *p)
+{
+ enable_irq(IRQ_AMIGA_CIAA_FLG);
+}
+
+static void amiga_disable_irq(struct parport *p)
+{
+ disable_irq(IRQ_AMIGA_CIAA_FLG);
+}
+
+static void amiga_data_forward(struct parport *p)
+{
+ DPRINTK(KERN_DEBUG "forward\n");
+ ciaa.ddrb = 0xff; /* all pins output */
+ mb();
+}
+
+static void amiga_data_reverse(struct parport *p)
+{
+ DPRINTK(KERN_DEBUG "reverse\n");
+ ciaa.ddrb = 0; /* all pins input */
+ mb();
+}
+
+static void amiga_init_state(struct pardevice *dev, struct parport_state *s)
+{
+ s->u.amiga.data = 0;
+ s->u.amiga.datadir = 255;
+ s->u.amiga.status = 0;
+ s->u.amiga.statusdir = 0;
+}
+
+static void amiga_save_state(struct parport *p, struct parport_state *s)
+{
+ mb();
+ s->u.amiga.data = ciaa.prb;
+ s->u.amiga.datadir = ciaa.ddrb;
+ s->u.amiga.status = ciab.pra & 7;
+ s->u.amiga.statusdir = ciab.ddra & 7;
+ mb();
+}
+
+static void amiga_restore_state(struct parport *p, struct parport_state *s)
+{
+ mb();
+ ciaa.prb = s->u.amiga.data;
+ ciaa.ddrb = s->u.amiga.datadir;
+ ciab.pra |= (ciab.pra & 0xf8) | s->u.amiga.status;
+ ciab.ddra |= (ciab.ddra & 0xf8) | s->u.amiga.statusdir;
+ mb();
+}
+
+static struct parport_operations pp_amiga_ops = {
+ .write_data = amiga_write_data,
+ .read_data = amiga_read_data,
+
+ .write_control = amiga_write_control,
+ .read_control = amiga_read_control,
+ .frob_control = amiga_frob_control,
+
+ .read_status = amiga_read_status,
+
+ .enable_irq = amiga_enable_irq,
+ .disable_irq = amiga_disable_irq,
+
+ .data_forward = amiga_data_forward,
+ .data_reverse = amiga_data_reverse,
+
+ .init_state = amiga_init_state,
+ .save_state = amiga_save_state,
+ .restore_state = amiga_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+/* ----------- Initialisation code --------------------------------- */
+
+static int __init parport_amiga_init(void)
+{
+ struct parport *p;
+ int err;
+
+ if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_PARALLEL))
+ return -ENODEV;
+
+ err = -EBUSY;
+ if (!request_mem_region(CIAA_PHYSADDR-1+0x100, 0x100, "parallel"))
+ goto out_mem;
+
+ ciaa.ddrb = 0xff;
+ ciab.ddra &= 0xf8;
+ mb();
+
+ p = parport_register_port((unsigned long)&ciaa.prb, IRQ_AMIGA_CIAA_FLG,
+ PARPORT_DMA_NONE, &pp_amiga_ops);
+ if (!p)
+ goto out_port;
+
+ err = request_irq(IRQ_AMIGA_CIAA_FLG, amiga_interrupt, 0, p->name, p);
+ if (err)
+ goto out_irq;
+
+ this_port = p;
+ printk(KERN_INFO "%s: Amiga built-in port using irq\n", p->name);
+ /* XXX: set operating mode */
+ parport_announce_port(p);
+
+ return 0;
+
+out_irq:
+ parport_put_port(p);
+out_port:
+ release_mem_region(CIAA_PHYSADDR-1+0x100, 0x100);
+out_mem:
+ return err;
+}
+
+static void __exit parport_amiga_exit(void)
+{
+ parport_remove_port(this_port);
+ if (this_port->irq != PARPORT_IRQ_NONE)
+ free_irq(IRQ_AMIGA_CIAA_FLG, this_port);
+ parport_put_port(this_port);
+ release_mem_region(CIAA_PHYSADDR-1+0x100, 0x100);
+}
+
+
+MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
+MODULE_DESCRIPTION("Parport Driver for Amiga builtin Port");
+MODULE_SUPPORTED_DEVICE("Amiga builtin Parallel Port");
+MODULE_LICENSE("GPL");
+
+module_init(parport_amiga_init)
+module_exit(parport_amiga_exit)
diff --git a/drivers/parport/parport_arc.c b/drivers/parport/parport_arc.c
new file mode 100644
index 000000000000..b35bb4f48d62
--- /dev/null
+++ b/drivers/parport/parport_arc.c
@@ -0,0 +1,139 @@
+/* Low-level parallel port routines for Archimedes onboard hardware
+ *
+ * Author: Phil Blundell <philb@gnu.org>
+ */
+
+/* This driver is for the parallel port hardware found on Acorn's old
+ * range of Archimedes machines. The A5000 and newer systems have PC-style
+ * I/O hardware and should use the parport_pc driver instead.
+ *
+ * The Acorn printer port hardware is very simple. There is a single 8-bit
+ * write-only latch for the data port and control/status bits are handled
+ * with various auxilliary input and output lines. The port is not
+ * bidirectional, does not support any modes other than SPP, and has only
+ * a subset of the standard printer control lines connected.
+ */
+
+#include <linux/threads.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/parport.h>
+
+#include <asm/ptrace.h>
+#include <asm/io.h>
+#include <asm/arch/oldlatches.h>
+#include <asm/arch/irqs.h>
+
+#define DATA_ADDRESS 0x3350010
+
+/* This is equivalent to the above and only used for request_region. */
+#define PORT_BASE 0x80000000 | ((DATA_ADDRESS - IO_BASE) >> 2)
+
+/* The hardware can't read from the data latch, so we must use a soft
+ copy. */
+static unsigned char data_copy;
+
+/* These are pretty simple. We know the irq is never shared and the
+ kernel does all the magic that's required. */
+static void arc_enable_irq(struct parport *p)
+{
+ enable_irq(p->irq);
+}
+
+static void arc_disable_irq(struct parport *p)
+{
+ disable_irq(p->irq);
+}
+
+static void arc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ parport_generic_irq(irq, (struct parport *) dev_id, regs);
+}
+
+static void arc_write_data(struct parport *p, unsigned char data)
+{
+ data_copy = data;
+ outb_t(data, DATA_LATCH);
+}
+
+static unsigned char arc_read_data(struct parport *p)
+{
+ return data_copy;
+}
+
+static struct parport_operations parport_arc_ops =
+{
+ .write_data = arc_write_data,
+ .read_data = arc_read_data,
+
+ .write_control = arc_write_control,
+ .read_control = arc_read_control,
+ .frob_control = arc_frob_control,
+
+ .read_status = arc_read_status,
+
+ .enable_irq = arc_enable_irq,
+ .disable_irq = arc_disable_irq,
+
+ .data_forward = arc_data_forward,
+ .data_reverse = arc_data_reverse,
+
+ .init_state = arc_init_state,
+ .save_state = arc_save_state,
+ .restore_state = arc_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+/* --- Initialisation code -------------------------------- */
+
+static int parport_arc_init(void)
+{
+ /* Archimedes hardware provides only one port, at a fixed address */
+ struct parport *p;
+ struct resource res;
+ char *fake_name = "parport probe");
+
+ res = request_region(PORT_BASE, 1, fake_name);
+ if (res == NULL)
+ return 0;
+
+ p = parport_register_port (PORT_BASE, IRQ_PRINTERACK,
+ PARPORT_DMA_NONE, &parport_arc_ops);
+
+ if (!p) {
+ release_region(PORT_BASE, 1);
+ return 0;
+ }
+
+ p->modes = PARPORT_MODE_ARCSPP;
+ p->size = 1;
+ rename_region(res, p->name);
+
+ printk(KERN_INFO "%s: Archimedes on-board port, using irq %d\n",
+ p->irq);
+
+ /* Tell the high-level drivers about the port. */
+ parport_announce_port (p);
+
+ return 1;
+}
+
+module_init(parport_arc_init)
diff --git a/drivers/parport/parport_atari.c b/drivers/parport/parport_atari.c
new file mode 100644
index 000000000000..78c3f34108bc
--- /dev/null
+++ b/drivers/parport/parport_atari.c
@@ -0,0 +1,240 @@
+/* Low-level parallel port routines for the Atari builtin port
+ *
+ * Author: Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+ *
+ * Based on parport_amiga.c.
+ *
+ * The built-in Atari parallel port provides one port at a fixed address
+ * with 8 output data lines (D0 - D7), 1 output control line (STROBE)
+ * and 1 input status line (BUSY) able to cause an interrupt.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/parport.h>
+#include <linux/interrupt.h>
+#include <asm/setup.h>
+#include <asm/atarihw.h>
+#include <asm/irq.h>
+#include <asm/atariints.h>
+
+static struct parport *this_port = NULL;
+
+static unsigned char
+parport_atari_read_data(struct parport *p)
+{
+ unsigned long flags;
+ unsigned char data;
+
+ local_irq_save(flags);
+ sound_ym.rd_data_reg_sel = 15;
+ data = sound_ym.rd_data_reg_sel;
+ local_irq_restore(flags);
+ return data;
+}
+
+static void
+parport_atari_write_data(struct parport *p, unsigned char data)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ sound_ym.rd_data_reg_sel = 15;
+ sound_ym.wd_data = data;
+ local_irq_restore(flags);
+}
+
+static unsigned char
+parport_atari_read_control(struct parport *p)
+{
+ unsigned long flags;
+ unsigned char control = 0;
+
+ local_irq_save(flags);
+ sound_ym.rd_data_reg_sel = 14;
+ if (!(sound_ym.rd_data_reg_sel & (1 << 5)))
+ control = PARPORT_CONTROL_STROBE;
+ local_irq_restore(flags);
+ return control;
+}
+
+static void
+parport_atari_write_control(struct parport *p, unsigned char control)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ sound_ym.rd_data_reg_sel = 14;
+ if (control & PARPORT_CONTROL_STROBE)
+ sound_ym.wd_data = sound_ym.rd_data_reg_sel & ~(1 << 5);
+ else
+ sound_ym.wd_data = sound_ym.rd_data_reg_sel | (1 << 5);
+ local_irq_restore(flags);
+}
+
+static unsigned char
+parport_atari_frob_control(struct parport *p, unsigned char mask,
+ unsigned char val)
+{
+ unsigned char old = parport_atari_read_control(p);
+ parport_atari_write_control(p, (old & ~mask) ^ val);
+ return old;
+}
+
+static unsigned char
+parport_atari_read_status(struct parport *p)
+{
+ return ((mfp.par_dt_reg & 1 ? 0 : PARPORT_STATUS_BUSY) |
+ PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR);
+}
+
+static void
+parport_atari_init_state(struct pardevice *d, struct parport_state *s)
+{
+}
+
+static void
+parport_atari_save_state(struct parport *p, struct parport_state *s)
+{
+}
+
+static void
+parport_atari_restore_state(struct parport *p, struct parport_state *s)
+{
+}
+
+static irqreturn_t
+parport_atari_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ parport_generic_irq(irq, (struct parport *) dev_id, regs);
+ return IRQ_HANDLED;
+}
+
+static void
+parport_atari_enable_irq(struct parport *p)
+{
+ enable_irq(IRQ_MFP_BUSY);
+}
+
+static void
+parport_atari_disable_irq(struct parport *p)
+{
+ disable_irq(IRQ_MFP_BUSY);
+}
+
+static void
+parport_atari_data_forward(struct parport *p)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ /* Soundchip port B as output. */
+ sound_ym.rd_data_reg_sel = 7;
+ sound_ym.wd_data = sound_ym.rd_data_reg_sel | 0x40;
+ local_irq_restore(flags);
+}
+
+static void
+parport_atari_data_reverse(struct parport *p)
+{
+#if 0 /* too dangerous, can kill sound chip */
+ unsigned long flags;
+
+ local_irq_save(flags);
+ /* Soundchip port B as input. */
+ sound_ym.rd_data_reg_sel = 7;
+ sound_ym.wd_data = sound_ym.rd_data_reg_sel & ~0x40;
+ local_irq_restore(flags);
+#endif
+}
+
+static struct parport_operations parport_atari_ops = {
+ .write_data = parport_atari_write_data,
+ .read_data = parport_atari_read_data,
+
+ .write_control = parport_atari_write_control,
+ .read_control = parport_atari_read_control,
+ .frob_control = parport_atari_frob_control,
+
+ .read_status = parport_atari_read_status,
+
+ .enable_irq = parport_atari_enable_irq,
+ .disable_irq = parport_atari_disable_irq,
+
+ .data_forward = parport_atari_data_forward,
+ .data_reverse = parport_atari_data_reverse,
+
+ .init_state = parport_atari_init_state,
+ .save_state = parport_atari_save_state,
+ .restore_state = parport_atari_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+
+static int __init parport_atari_init(void)
+{
+ struct parport *p;
+ unsigned long flags;
+
+ if (MACH_IS_ATARI) {
+ local_irq_save(flags);
+ /* Soundchip port A/B as output. */
+ sound_ym.rd_data_reg_sel = 7;
+ sound_ym.wd_data = (sound_ym.rd_data_reg_sel & 0x3f) | 0xc0;
+ /* STROBE high. */
+ sound_ym.rd_data_reg_sel = 14;
+ sound_ym.wd_data = sound_ym.rd_data_reg_sel | (1 << 5);
+ local_irq_restore(flags);
+ /* MFP port I0 as input. */
+ mfp.data_dir &= ~1;
+ /* MFP port I0 interrupt on high->low edge. */
+ mfp.active_edge &= ~1;
+ p = parport_register_port((unsigned long)&sound_ym.wd_data,
+ IRQ_MFP_BUSY, PARPORT_DMA_NONE,
+ &parport_atari_ops);
+ if (!p)
+ return -ENODEV;
+ if (request_irq(IRQ_MFP_BUSY, parport_atari_interrupt,
+ IRQ_TYPE_SLOW, p->name, p)) {
+ parport_put_port (p);
+ return -ENODEV;
+ }
+
+ this_port = p;
+ printk(KERN_INFO "%s: Atari built-in port using irq\n", p->name);
+ parport_announce_port (p);
+
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static void __exit parport_atari_exit(void)
+{
+ parport_remove_port(this_port);
+ if (this_port->irq != PARPORT_IRQ_NONE)
+ free_irq(IRQ_MFP_BUSY, this_port);
+ parport_put_port(this_port);
+}
+
+MODULE_AUTHOR("Andreas Schwab");
+MODULE_DESCRIPTION("Parport Driver for Atari builtin Port");
+MODULE_SUPPORTED_DEVICE("Atari builtin Parallel Port");
+MODULE_LICENSE("GPL");
+
+module_init(parport_atari_init)
+module_exit(parport_atari_exit)
diff --git a/drivers/parport/parport_cs.c b/drivers/parport/parport_cs.c
new file mode 100644
index 000000000000..a3fa8185af2a
--- /dev/null
+++ b/drivers/parport/parport_cs.c
@@ -0,0 +1,397 @@
+/*======================================================================
+
+ A driver for PCMCIA parallel port adapters
+
+ (specifically, for the Quatech SPP-100 EPP card: other cards will
+ probably require driver tweaks)
+
+ parport_cs.c 1.29 2002/10/11 06:57:41
+
+ The contents of this file are subject to the Mozilla Public
+ License Version 1.1 (the "License"); you may not use this file
+ except in compliance with the License. You may obtain a copy of
+ the License at http://www.mozilla.org/MPL/
+
+ Software distributed under the License is distributed on an "AS
+ IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ rights and limitations under the License.
+
+ The initial developer of the original code is David A. Hinds
+ <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+
+ Alternatively, the contents of this file may be used under the
+ terms of the GNU General Public License version 2 (the "GPL"), in
+ which case the provisions of the GPL are applicable instead of the
+ above. If you wish to allow the use of your version of this file
+ only under the terms of the GPL and not to allow others to use
+ your version of this file under the MPL, indicate your decision
+ by deleting the provisions above and replace them with the notice
+ and other provisions required by the GPL. If you do not delete
+ the provisions above, a recipient may use your version of this
+ file under either the MPL or the GPL.
+
+======================================================================*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/major.h>
+
+#include <linux/parport.h>
+#include <linux/parport_pc.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ciscode.h>
+
+/*====================================================================*/
+
+/* Module parameters */
+
+MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
+MODULE_DESCRIPTION("PCMCIA parallel port card driver");
+MODULE_LICENSE("Dual MPL/GPL");
+
+#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
+
+INT_MODULE_PARM(epp_mode, 1);
+
+#ifdef PCMCIA_DEBUG
+INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+#define FORCE_EPP_MODE 0x08
+
+typedef struct parport_info_t {
+ dev_link_t link;
+ int ndev;
+ dev_node_t node;
+ struct parport *port;
+} parport_info_t;
+
+static dev_link_t *parport_attach(void);
+static void parport_detach(dev_link_t *);
+static void parport_config(dev_link_t *link);
+static void parport_cs_release(dev_link_t *);
+static int parport_event(event_t event, int priority,
+ event_callback_args_t *args);
+
+static dev_info_t dev_info = "parport_cs";
+static dev_link_t *dev_list = NULL;
+
+/*======================================================================
+
+ parport_attach() creates an "instance" of the driver, allocating
+ local data structures for one device. The device is registered
+ with Card Services.
+
+======================================================================*/
+
+static dev_link_t *parport_attach(void)
+{
+ parport_info_t *info;
+ dev_link_t *link;
+ client_reg_t client_reg;
+ int ret;
+
+ DEBUG(0, "parport_attach()\n");
+
+ /* Create new parport device */
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) return NULL;
+ memset(info, 0, sizeof(*info));
+ link = &info->link; link->priv = info;
+
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+ link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.Vcc = 50;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.EventMask =
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &parport_event;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+ ret = pcmcia_register_client(&link->handle, &client_reg);
+ if (ret != CS_SUCCESS) {
+ cs_error(link->handle, RegisterClient, ret);
+ parport_detach(link);
+ return NULL;
+ }
+
+ return link;
+} /* parport_attach */
+
+/*======================================================================
+
+ This deletes a driver "instance". The device is de-registered
+ with Card Services. If it has been released, all local data
+ structures are freed. Otherwise, the structures will be freed
+ when the device is released.
+
+======================================================================*/
+
+static void parport_detach(dev_link_t *link)
+{
+ dev_link_t **linkp;
+ int ret;
+
+ DEBUG(0, "parport_detach(0x%p)\n", link);
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link) break;
+ if (*linkp == NULL)
+ return;
+
+ if (link->state & DEV_CONFIG)
+ parport_cs_release(link);
+
+ if (link->handle) {
+ ret = pcmcia_deregister_client(link->handle);
+ if (ret != CS_SUCCESS)
+ cs_error(link->handle, DeregisterClient, ret);
+ }
+
+ /* Unlink, free device structure */
+ *linkp = link->next;
+ kfree(link->priv);
+
+} /* parport_detach */
+
+/*======================================================================
+
+ parport_config() is scheduled to run after a CARD_INSERTION event
+ is received, to configure the PCMCIA socket, and to make the
+ parport device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+void parport_config(dev_link_t *link)
+{
+ client_handle_t handle = link->handle;
+ parport_info_t *info = link->priv;
+ tuple_t tuple;
+ u_short buf[128];
+ cisparse_t parse;
+ config_info_t conf;
+ cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
+ cistpl_cftable_entry_t dflt = { 0 };
+ struct parport *p;
+ int last_ret, last_fn;
+
+ DEBUG(0, "parport_config(0x%p)\n", link);
+
+ tuple.TupleData = (cisdata_t *)buf;
+ tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
+ tuple.Attributes = 0;
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+ CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ /* Not sure if this is right... look up the current Vcc */
+ CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
+
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ tuple.Attributes = 0;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ while (1) {
+ if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
+ pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
+ goto next_entry;
+
+ if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+ cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
+ link->conf.ConfigIndex = cfg->index;
+ if (epp_mode)
+ link->conf.ConfigIndex |= FORCE_EPP_MODE;
+ link->io.BasePort1 = io->win[0].base;
+ link->io.NumPorts1 = io->win[0].len;
+ link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
+ if (io->nwin == 2) {
+ link->io.BasePort2 = io->win[1].base;
+ link->io.NumPorts2 = io->win[1].len;
+ }
+ if (pcmcia_request_io(link->handle, &link->io) != 0)
+ goto next_entry;
+ /* If we've got this far, we're done */
+ break;
+ }
+
+ next_entry:
+ if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
+ CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
+ }
+
+ CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
+ CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
+
+ release_region(link->io.BasePort1, link->io.NumPorts1);
+ if (link->io.NumPorts2)
+ release_region(link->io.BasePort2, link->io.NumPorts2);
+ p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
+ link->irq.AssignedIRQ, PARPORT_DMA_NONE,
+ NULL);
+ if (p == NULL) {
+ printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
+ "0x%3x, irq %u failed\n", link->io.BasePort1,
+ link->irq.AssignedIRQ);
+ goto failed;
+ }
+
+ p->modes |= PARPORT_MODE_PCSPP;
+ if (epp_mode)
+ p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
+ info->ndev = 1;
+ info->node.major = LP_MAJOR;
+ info->node.minor = p->number;
+ info->port = p;
+ strcpy(info->node.dev_name, p->name);
+ link->dev = &info->node;
+
+ link->state &= ~DEV_CONFIG_PENDING;
+ return;
+
+cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+failed:
+ parport_cs_release(link);
+ link->state &= ~DEV_CONFIG_PENDING;
+
+} /* parport_config */
+
+/*======================================================================
+
+ After a card is removed, parport_cs_release() will unregister the
+ device, and release the PCMCIA configuration. If the device is
+ still open, this will be postponed until it is closed.
+
+======================================================================*/
+
+void parport_cs_release(dev_link_t *link)
+{
+ parport_info_t *info = link->priv;
+
+ DEBUG(0, "parport_release(0x%p)\n", link);
+
+ if (info->ndev) {
+ struct parport *p = info->port;
+ parport_pc_unregister_port(p);
+ request_region(link->io.BasePort1, link->io.NumPorts1,
+ info->node.dev_name);
+ if (link->io.NumPorts2)
+ request_region(link->io.BasePort2, link->io.NumPorts2,
+ info->node.dev_name);
+ }
+ info->ndev = 0;
+ link->dev = NULL;
+
+ pcmcia_release_configuration(link->handle);
+ pcmcia_release_io(link->handle, &link->io);
+ pcmcia_release_irq(link->handle, &link->irq);
+
+ link->state &= ~DEV_CONFIG;
+
+} /* parport_cs_release */
+
+/*======================================================================
+
+ The card status event handler. Mostly, this schedules other
+ stuff to run after an event is received.
+
+======================================================================*/
+
+int parport_event(event_t event, int priority,
+ event_callback_args_t *args)
+{
+ dev_link_t *link = args->client_data;
+
+ DEBUG(1, "parport_event(0x%06x)\n", event);
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ link->state &= ~DEV_PRESENT;
+ if (link->state & DEV_CONFIG)
+ parport_cs_release(link);
+ break;
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ parport_config(link);
+ break;
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ if (link->state & DEV_CONFIG)
+ pcmcia_release_configuration(link->handle);
+ break;
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (DEV_OK(link))
+ pcmcia_request_configuration(link->handle, &link->conf);
+ break;
+ }
+ return 0;
+} /* parport_event */
+
+static struct pcmcia_driver parport_cs_driver = {
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = "parport_cs",
+ },
+ .attach = parport_attach,
+ .detach = parport_detach,
+};
+
+static int __init init_parport_cs(void)
+{
+ return pcmcia_register_driver(&parport_cs_driver);
+}
+
+static void __exit exit_parport_cs(void)
+{
+ pcmcia_unregister_driver(&parport_cs_driver);
+ BUG_ON(dev_list != NULL);
+}
+
+module_init(init_parport_cs);
+module_exit(exit_parport_cs);
diff --git a/drivers/parport/parport_gsc.c b/drivers/parport/parport_gsc.c
new file mode 100644
index 000000000000..02d72acd1c89
--- /dev/null
+++ b/drivers/parport/parport_gsc.c
@@ -0,0 +1,437 @@
+/*
+ * Low-level parallel-support for PC-style hardware integrated in the
+ * LASI-Controller (on GSC-Bus) for HP-PARISC Workstations
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * (C) 1999-2001 by Helge Deller <deller@gmx.de>
+ *
+ *
+ * based on parport_pc.c by
+ * Grant Guenther <grant@torque.net>
+ * Phil Blundell <philb@gnu.org>
+ * Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Jose Renau <renau@acm.org>
+ * David Campbell <campbell@torque.net>
+ * Andrea Arcangeli
+ */
+
+#undef DEBUG /* undef for production */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/sysctl.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+#include <asm/superio.h>
+
+#include <linux/parport.h>
+#include <asm/pdc.h>
+#include <asm/parisc-device.h>
+#include <asm/hardware.h>
+#include "parport_gsc.h"
+
+
+MODULE_AUTHOR("Helge Deller <deller@gmx.de>");
+MODULE_DESCRIPTION("HP-PARISC PC-style parallel port driver");
+MODULE_SUPPORTED_DEVICE("integrated PC-style parallel port");
+MODULE_LICENSE("GPL");
+
+
+/*
+ * Clear TIMEOUT BIT in EPP MODE
+ *
+ * This is also used in SPP detection.
+ */
+static int clear_epp_timeout(struct parport *pb)
+{
+ unsigned char r;
+
+ if (!(parport_gsc_read_status(pb) & 0x01))
+ return 1;
+
+ /* To clear timeout some chips require double read */
+ parport_gsc_read_status(pb);
+ r = parport_gsc_read_status(pb);
+ parport_writeb (r | 0x01, STATUS (pb)); /* Some reset by writing 1 */
+ parport_writeb (r & 0xfe, STATUS (pb)); /* Others by writing 0 */
+ r = parport_gsc_read_status(pb);
+
+ return !(r & 0x01);
+}
+
+/*
+ * Access functions.
+ *
+ * Most of these aren't static because they may be used by the
+ * parport_xxx_yyy macros. extern __inline__ versions of several
+ * of these are in parport_gsc.h.
+ */
+
+static irqreturn_t parport_gsc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ parport_generic_irq(irq, (struct parport *) dev_id, regs);
+ return IRQ_HANDLED;
+}
+
+void parport_gsc_init_state(struct pardevice *dev, struct parport_state *s)
+{
+ s->u.pc.ctr = 0xc | (dev->irq_func ? 0x10 : 0x0);
+}
+
+void parport_gsc_save_state(struct parport *p, struct parport_state *s)
+{
+ s->u.pc.ctr = parport_readb (CONTROL (p));
+}
+
+void parport_gsc_restore_state(struct parport *p, struct parport_state *s)
+{
+ parport_writeb (s->u.pc.ctr, CONTROL (p));
+}
+
+struct parport_operations parport_gsc_ops =
+{
+ .write_data = parport_gsc_write_data,
+ .read_data = parport_gsc_read_data,
+
+ .write_control = parport_gsc_write_control,
+ .read_control = parport_gsc_read_control,
+ .frob_control = parport_gsc_frob_control,
+
+ .read_status = parport_gsc_read_status,
+
+ .enable_irq = parport_gsc_enable_irq,
+ .disable_irq = parport_gsc_disable_irq,
+
+ .data_forward = parport_gsc_data_forward,
+ .data_reverse = parport_gsc_data_reverse,
+
+ .init_state = parport_gsc_init_state,
+ .save_state = parport_gsc_save_state,
+ .restore_state = parport_gsc_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+/* --- Mode detection ------------------------------------- */
+
+/*
+ * Checks for port existence, all ports support SPP MODE
+ */
+static int __devinit parport_SPP_supported(struct parport *pb)
+{
+ unsigned char r, w;
+
+ /*
+ * first clear an eventually pending EPP timeout
+ * I (sailer@ife.ee.ethz.ch) have an SMSC chipset
+ * that does not even respond to SPP cycles if an EPP
+ * timeout is pending
+ */
+ clear_epp_timeout(pb);
+
+ /* Do a simple read-write test to make sure the port exists. */
+ w = 0xc;
+ parport_writeb (w, CONTROL (pb));
+
+ /* Is there a control register that we can read from? Some
+ * ports don't allow reads, so read_control just returns a
+ * software copy. Some ports _do_ allow reads, so bypass the
+ * software copy here. In addition, some bits aren't
+ * writable. */
+ r = parport_readb (CONTROL (pb));
+ if ((r & 0xf) == w) {
+ w = 0xe;
+ parport_writeb (w, CONTROL (pb));
+ r = parport_readb (CONTROL (pb));
+ parport_writeb (0xc, CONTROL (pb));
+ if ((r & 0xf) == w)
+ return PARPORT_MODE_PCSPP;
+ }
+
+ /* Try the data register. The data lines aren't tri-stated at
+ * this stage, so we expect back what we wrote. */
+ w = 0xaa;
+ parport_gsc_write_data (pb, w);
+ r = parport_gsc_read_data (pb);
+ if (r == w) {
+ w = 0x55;
+ parport_gsc_write_data (pb, w);
+ r = parport_gsc_read_data (pb);
+ if (r == w)
+ return PARPORT_MODE_PCSPP;
+ }
+
+ return 0;
+}
+
+/* Detect PS/2 support.
+ *
+ * Bit 5 (0x20) sets the PS/2 data direction; setting this high
+ * allows us to read data from the data lines. In theory we would get back
+ * 0xff but any peripheral attached to the port may drag some or all of the
+ * lines down to zero. So if we get back anything that isn't the contents
+ * of the data register we deem PS/2 support to be present.
+ *
+ * Some SPP ports have "half PS/2" ability - you can't turn off the line
+ * drivers, but an external peripheral with sufficiently beefy drivers of
+ * its own can overpower them and assert its own levels onto the bus, from
+ * where they can then be read back as normal. Ports with this property
+ * and the right type of device attached are likely to fail the SPP test,
+ * (as they will appear to have stuck bits) and so the fact that they might
+ * be misdetected here is rather academic.
+ */
+
+static int __devinit parport_PS2_supported(struct parport *pb)
+{
+ int ok = 0;
+
+ clear_epp_timeout(pb);
+
+ /* try to tri-state the buffer */
+ parport_gsc_data_reverse (pb);
+
+ parport_gsc_write_data(pb, 0x55);
+ if (parport_gsc_read_data(pb) != 0x55) ok++;
+
+ parport_gsc_write_data(pb, 0xaa);
+ if (parport_gsc_read_data(pb) != 0xaa) ok++;
+
+ /* cancel input mode */
+ parport_gsc_data_forward (pb);
+
+ if (ok) {
+ pb->modes |= PARPORT_MODE_TRISTATE;
+ } else {
+ struct parport_gsc_private *priv = pb->private_data;
+ priv->ctr_writable &= ~0x20;
+ }
+
+ return ok;
+}
+
+
+/* --- Initialisation code -------------------------------- */
+
+struct parport *__devinit parport_gsc_probe_port (unsigned long base,
+ unsigned long base_hi,
+ int irq, int dma,
+ struct pci_dev *dev)
+{
+ struct parport_gsc_private *priv;
+ struct parport_operations *ops;
+ struct parport tmp;
+ struct parport *p = &tmp;
+
+ priv = kmalloc (sizeof (struct parport_gsc_private), GFP_KERNEL);
+ if (!priv) {
+ printk (KERN_DEBUG "parport (0x%lx): no memory!\n", base);
+ return NULL;
+ }
+ ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
+ if (!ops) {
+ printk (KERN_DEBUG "parport (0x%lx): no memory for ops!\n",
+ base);
+ kfree (priv);
+ return NULL;
+ }
+ memcpy (ops, &parport_gsc_ops, sizeof (struct parport_operations));
+ priv->ctr = 0xc;
+ priv->ctr_writable = 0xff;
+ priv->dma_buf = 0;
+ priv->dma_handle = 0;
+ priv->dev = dev;
+ p->base = base;
+ p->base_hi = base_hi;
+ p->irq = irq;
+ p->dma = dma;
+ p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
+ p->ops = ops;
+ p->private_data = priv;
+ p->physport = p;
+ if (!parport_SPP_supported (p)) {
+ /* No port. */
+ kfree (priv);
+ return NULL;
+ }
+ parport_PS2_supported (p);
+
+ if (!(p = parport_register_port(base, PARPORT_IRQ_NONE,
+ PARPORT_DMA_NONE, ops))) {
+ kfree (priv);
+ kfree (ops);
+ return NULL;
+ }
+
+ p->base_hi = base_hi;
+ p->modes = tmp.modes;
+ p->size = (p->modes & PARPORT_MODE_EPP)?8:3;
+ p->private_data = priv;
+
+ printk(KERN_INFO "%s: PC-style at 0x%lx", p->name, p->base);
+ p->irq = irq;
+ if (p->irq == PARPORT_IRQ_AUTO) {
+ p->irq = PARPORT_IRQ_NONE;
+ }
+ if (p->irq != PARPORT_IRQ_NONE) {
+ printk(", irq %d", p->irq);
+
+ if (p->dma == PARPORT_DMA_AUTO) {
+ p->dma = PARPORT_DMA_NONE;
+ }
+ }
+ if (p->dma == PARPORT_DMA_AUTO) /* To use DMA, giving the irq
+ is mandatory (see above) */
+ p->dma = PARPORT_DMA_NONE;
+
+ printk(" [");
+#define printmode(x) {if(p->modes&PARPORT_MODE_##x){printk("%s%s",f?",":"",#x);f++;}}
+ {
+ int f = 0;
+ printmode(PCSPP);
+ printmode(TRISTATE);
+ printmode(COMPAT)
+ printmode(EPP);
+// printmode(ECP);
+// printmode(DMA);
+ }
+#undef printmode
+ printk("]\n");
+
+ if (p->irq != PARPORT_IRQ_NONE) {
+ if (request_irq (p->irq, parport_gsc_interrupt,
+ 0, p->name, p)) {
+ printk (KERN_WARNING "%s: irq %d in use, "
+ "resorting to polled operation\n",
+ p->name, p->irq);
+ p->irq = PARPORT_IRQ_NONE;
+ p->dma = PARPORT_DMA_NONE;
+ }
+ }
+
+ /* Done probing. Now put the port into a sensible start-up state. */
+
+ parport_gsc_write_data(p, 0);
+ parport_gsc_data_forward (p);
+
+ /* Now that we've told the sharing engine about the port, and
+ found out its characteristics, let the high-level drivers
+ know about it. */
+ parport_announce_port (p);
+
+ return p;
+}
+
+
+#define PARPORT_GSC_OFFSET 0x800
+
+static int __initdata parport_count;
+
+static int __devinit parport_init_chip(struct parisc_device *dev)
+{
+ struct parport *p;
+ unsigned long port;
+
+ if (!dev->irq) {
+ printk("IRQ not found for parallel device at 0x%lx\n", dev->hpa);
+ return -ENODEV;
+ }
+
+ port = dev->hpa + PARPORT_GSC_OFFSET;
+
+ /* some older machines with ASP-chip don't support
+ * the enhanced parport modes.
+ */
+ if (boot_cpu_data.cpu_type > pcxt && !pdc_add_valid(port+4)) {
+
+ /* Initialize bidirectional-mode (0x10) & data-tranfer-mode #1 (0x20) */
+ printk("%s: initialize bidirectional-mode.\n", __FUNCTION__);
+ parport_writeb ( (0x10 + 0x20), port + 4);
+
+ } else {
+ printk("%s: enhanced parport-modes not supported.\n", __FUNCTION__);
+ }
+
+ p = parport_gsc_probe_port(port, 0, dev->irq,
+ /* PARPORT_IRQ_NONE */ PARPORT_DMA_NONE, NULL);
+ if (p)
+ parport_count++;
+ dev->dev.driver_data = p;
+
+ return 0;
+}
+
+static int __devexit parport_remove_chip(struct parisc_device *dev)
+{
+ struct parport *p = dev->dev.driver_data;
+ if (p) {
+ struct parport_gsc_private *priv = p->private_data;
+ struct parport_operations *ops = p->ops;
+ parport_remove_port(p);
+ if (p->dma != PARPORT_DMA_NONE)
+ free_dma(p->dma);
+ if (p->irq != PARPORT_IRQ_NONE)
+ free_irq(p->irq, p);
+ if (priv->dma_buf)
+ pci_free_consistent(priv->dev, PAGE_SIZE,
+ priv->dma_buf,
+ priv->dma_handle);
+ kfree (p->private_data);
+ parport_put_port(p);
+ kfree (ops); /* hope no-one cached it */
+ }
+ return 0;
+}
+
+static struct parisc_device_id parport_tbl[] = {
+ { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x74 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(parisc, parport_tbl);
+
+static struct parisc_driver parport_driver = {
+ .name = "Parallel",
+ .id_table = parport_tbl,
+ .probe = parport_init_chip,
+ .remove = __devexit_p(parport_remove_chip),
+};
+
+int __devinit parport_gsc_init(void)
+{
+ return register_parisc_driver(&parport_driver);
+}
+
+static void __devexit parport_gsc_exit(void)
+{
+ unregister_parisc_driver(&parport_driver);
+}
+
+module_init(parport_gsc_init);
+module_exit(parport_gsc_exit);
diff --git a/drivers/parport/parport_gsc.h b/drivers/parport/parport_gsc.h
new file mode 100644
index 000000000000..662f6c1fee5d
--- /dev/null
+++ b/drivers/parport/parport_gsc.h
@@ -0,0 +1,222 @@
+/*
+ * Low-level parallel-support for PC-style hardware integrated in the
+ * LASI-Controller (on GSC-Bus) for HP-PARISC Workstations
+ *
+ * (C) 1999-2001 by Helge Deller <deller@gmx.de>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * based on parport_pc.c by
+ * Grant Guenther <grant@torque.net>
+ * Phil Blundell <Philip.Blundell@pobox.com>
+ * Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Jose Renau <renau@acm.org>
+ * David Campbell <campbell@torque.net>
+ * Andrea Arcangeli
+ */
+
+#ifndef __DRIVERS_PARPORT_PARPORT_GSC_H
+#define __DRIVERS_PARPORT_PARPORT_GSC_H
+
+#include <asm/io.h>
+#include <linux/delay.h>
+
+#undef DEBUG_PARPORT /* undefine for production */
+#define DELAY_TIME 0
+
+#if DELAY_TIME == 0
+#define parport_readb gsc_readb
+#define parport_writeb gsc_writeb
+#else
+static __inline__ unsigned char parport_readb( unsigned long port )
+{
+ udelay(DELAY_TIME);
+ return gsc_readb(port);
+}
+
+static __inline__ void parport_writeb( unsigned char value, unsigned long port )
+{
+ gsc_writeb(value,port);
+ udelay(DELAY_TIME);
+}
+#endif
+
+/* --- register definitions ------------------------------- */
+
+#define EPPDATA(p) ((p)->base + 0x4)
+#define EPPADDR(p) ((p)->base + 0x3)
+#define CONTROL(p) ((p)->base + 0x2)
+#define STATUS(p) ((p)->base + 0x1)
+#define DATA(p) ((p)->base + 0x0)
+
+struct parport_gsc_private {
+ /* Contents of CTR. */
+ unsigned char ctr;
+
+ /* Bitmask of writable CTR bits. */
+ unsigned char ctr_writable;
+
+ /* Number of bytes per portword. */
+ int pword;
+
+ /* Not used yet. */
+ int readIntrThreshold;
+ int writeIntrThreshold;
+
+ /* buffer suitable for DMA, if DMA enabled */
+ char *dma_buf;
+ dma_addr_t dma_handle;
+ struct pci_dev *dev;
+};
+
+static inline void parport_gsc_write_data(struct parport *p, unsigned char d)
+{
+#ifdef DEBUG_PARPORT
+ printk (KERN_DEBUG "parport_gsc_write_data(%p,0x%02x)\n", p, d);
+#endif
+ parport_writeb(d, DATA(p));
+}
+
+static inline unsigned char parport_gsc_read_data(struct parport *p)
+{
+ unsigned char val = parport_readb (DATA (p));
+#ifdef DEBUG_PARPORT
+ printk (KERN_DEBUG "parport_gsc_read_data(%p) = 0x%02x\n",
+ p, val);
+#endif
+ return val;
+}
+
+/* __parport_gsc_frob_control differs from parport_gsc_frob_control in that
+ * it doesn't do any extra masking. */
+static inline unsigned char __parport_gsc_frob_control(struct parport *p,
+ unsigned char mask,
+ unsigned char val)
+{
+ struct parport_gsc_private *priv = p->physport->private_data;
+ unsigned char ctr = priv->ctr;
+#ifdef DEBUG_PARPORT
+ printk (KERN_DEBUG
+ "__parport_gsc_frob_control(%02x,%02x): %02x -> %02x\n",
+ mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
+#endif
+ ctr = (ctr & ~mask) ^ val;
+ ctr &= priv->ctr_writable; /* only write writable bits. */
+ parport_writeb (ctr, CONTROL (p));
+ priv->ctr = ctr; /* Update soft copy */
+ return ctr;
+}
+
+static inline void parport_gsc_data_reverse(struct parport *p)
+{
+ __parport_gsc_frob_control (p, 0x20, 0x20);
+}
+
+static inline void parport_gsc_data_forward(struct parport *p)
+{
+ __parport_gsc_frob_control (p, 0x20, 0x00);
+}
+
+static inline void parport_gsc_write_control(struct parport *p,
+ unsigned char d)
+{
+ const unsigned char wm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+
+ /* Take this out when drivers have adapted to newer interface. */
+ if (d & 0x20) {
+ printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
+ p->name, p->cad->name);
+ parport_gsc_data_reverse (p);
+ }
+
+ __parport_gsc_frob_control (p, wm, d & wm);
+}
+
+static inline unsigned char parport_gsc_read_control(struct parport *p)
+{
+ const unsigned char rm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+ const struct parport_gsc_private *priv = p->physport->private_data;
+ return priv->ctr & rm; /* Use soft copy */
+}
+
+static inline unsigned char parport_gsc_frob_control(struct parport *p,
+ unsigned char mask,
+ unsigned char val)
+{
+ const unsigned char wm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+
+ /* Take this out when drivers have adapted to newer interface. */
+ if (mask & 0x20) {
+ printk (KERN_DEBUG "%s (%s): use data_%s for this!\n",
+ p->name, p->cad->name,
+ (val & 0x20) ? "reverse" : "forward");
+ if (val & 0x20)
+ parport_gsc_data_reverse (p);
+ else
+ parport_gsc_data_forward (p);
+ }
+
+ /* Restrict mask and val to control lines. */
+ mask &= wm;
+ val &= wm;
+
+ return __parport_gsc_frob_control (p, mask, val);
+}
+
+static inline unsigned char parport_gsc_read_status(struct parport *p)
+{
+ return parport_readb (STATUS(p));
+}
+
+static inline void parport_gsc_disable_irq(struct parport *p)
+{
+ __parport_gsc_frob_control (p, 0x10, 0x00);
+}
+
+static inline void parport_gsc_enable_irq(struct parport *p)
+{
+ __parport_gsc_frob_control (p, 0x10, 0x10);
+}
+
+extern void parport_gsc_release_resources(struct parport *p);
+
+extern int parport_gsc_claim_resources(struct parport *p);
+
+extern void parport_gsc_init_state(struct pardevice *, struct parport_state *s);
+
+extern void parport_gsc_save_state(struct parport *p, struct parport_state *s);
+
+extern void parport_gsc_restore_state(struct parport *p, struct parport_state *s);
+
+extern void parport_gsc_inc_use_count(void);
+
+extern void parport_gsc_dec_use_count(void);
+
+extern struct parport *parport_gsc_probe_port(unsigned long base,
+ unsigned long base_hi,
+ int irq, int dma,
+ struct pci_dev *dev);
+
+#endif /* __DRIVERS_PARPORT_PARPORT_GSC_H */
diff --git a/drivers/parport/parport_mfc3.c b/drivers/parport/parport_mfc3.c
new file mode 100644
index 000000000000..c85364765ef8
--- /dev/null
+++ b/drivers/parport/parport_mfc3.c
@@ -0,0 +1,404 @@
+/* Low-level parallel port routines for the Multiface 3 card
+ *
+ * Author: Joerg Dorchain <joerg@dorchain.net>
+ *
+ * (C) The elitist m68k Users(TM)
+ *
+ * based on the existing parport_amiga and lp_mfc
+ *
+ *
+ * From the MFC3 documentation:
+ *
+ * Miscellaneous PIA Details
+ * -------------------------
+ *
+ * The two open-drain interrupt outputs /IRQA and /IRQB are routed to
+ * /INT2 of the Z2 bus.
+ *
+ * The CPU data bus of the PIA (D0-D7) is connected to D8-D15 on the Z2
+ * bus. This means that any PIA registers are accessed at even addresses.
+ *
+ * Centronics Pin Connections for the PIA
+ * --------------------------------------
+ *
+ * The following table shows the connections between the PIA and the
+ * Centronics interface connector. These connections implement a single, but
+ * very complete, Centronics type interface. The Pin column gives the pin
+ * numbers of the PIA. The Centronics pin numbers can be found in the section
+ * "Parallel Connectors".
+ *
+ *
+ * Pin | PIA | Dir | Centronics Names
+ * -------+-----+-----+---------------------------------------------------------
+ * 19 | CB2 | --> | /STROBE (aka /DRDY)
+ * 10-17 | PBx | <-> | DATA0 - DATA7
+ * 18 | CB1 | <-- | /ACK
+ * 40 | CA1 | <-- | BUSY
+ * 3 | PA1 | <-- | PAPER-OUT (aka POUT)
+ * 4 | PA2 | <-- | SELECTED (aka SEL)
+ * 9 | PA7 | --> | /INIT (aka /RESET or /INPUT-PRIME)
+ * 6 | PA4 | <-- | /ERROR (aka /FAULT)
+ * 7 | PA5 | --> | DIR (aka /SELECT-IN)
+ * 8 | PA6 | --> | /AUTO-FEED-XT
+ * 39 | CA2 | --> | open
+ * 5 | PA3 | <-- | /ACK (same as CB1!)
+ * 2 | PA0 | <-- | BUSY (same as CA1!)
+ * -------+-----+-----+---------------------------------------------------------
+ *
+ * Should be enough to understand some of the driver.
+ *
+ * Per convention for normal use the port registers are visible.
+ * If you need the data direction registers, restore the value in the
+ * control register.
+ */
+
+#include "multiface.h"
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/parport.h>
+#include <linux/delay.h>
+#include <linux/mc6821.h>
+#include <linux/zorro.h>
+#include <linux/interrupt.h>
+#include <asm/setup.h>
+#include <asm/amigahw.h>
+#include <asm/irq.h>
+#include <asm/amigaints.h>
+
+/* Maximum Number of Cards supported */
+#define MAX_MFC 5
+
+#undef DEBUG
+#ifdef DEBUG
+#define DPRINTK printk
+#else
+static inline int DPRINTK(void *nothing, ...) {return 0;}
+#endif
+
+static struct parport *this_port[MAX_MFC] = {NULL, };
+static volatile int dummy; /* for trigger readds */
+
+#define pia(dev) ((struct pia *)(dev->base))
+static struct parport_operations pp_mfc3_ops;
+
+static void mfc3_write_data(struct parport *p, unsigned char data)
+{
+DPRINTK(KERN_DEBUG "write_data %c\n",data);
+
+ dummy = pia(p)->pprb; /* clears irq bit */
+ /* Triggers also /STROBE.*/
+ pia(p)->pprb = data;
+}
+
+static unsigned char mfc3_read_data(struct parport *p)
+{
+ /* clears interrupt bit. Triggers also /STROBE. */
+ return pia(p)->pprb;
+}
+
+static unsigned char control_pc_to_mfc3(unsigned char control)
+{
+ unsigned char ret = 32|64;
+
+ if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
+ ret &= ~32; /* /SELECT_IN */
+ if (control & PARPORT_CONTROL_INIT) /* INITP */
+ ret |= 128;
+ if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
+ ret &= ~64;
+ if (control & PARPORT_CONTROL_STROBE) /* Strobe */
+ /* Handled directly by hardware */;
+ return ret;
+}
+
+static unsigned char control_mfc3_to_pc(unsigned char control)
+{
+ unsigned char ret = PARPORT_CONTROL_STROBE
+ | PARPORT_CONTROL_AUTOFD | PARPORT_CONTROL_SELECT;
+
+ if (control & 128) /* /INITP */
+ ret |= PARPORT_CONTROL_INIT;
+ if (control & 64) /* /AUTOLF */
+ ret &= ~PARPORT_CONTROL_AUTOFD;
+ if (control & 32) /* /SELECT_IN */
+ ret &= ~PARPORT_CONTROL_SELECT;
+ return ret;
+}
+
+static void mfc3_write_control(struct parport *p, unsigned char control)
+{
+DPRINTK(KERN_DEBUG "write_control %02x\n",control);
+ pia(p)->ppra = (pia(p)->ppra & 0x1f) | control_pc_to_mfc3(control);
+}
+
+static unsigned char mfc3_read_control( struct parport *p)
+{
+DPRINTK(KERN_DEBUG "read_control \n");
+ return control_mfc3_to_pc(pia(p)->ppra & 0xe0);
+}
+
+static unsigned char mfc3_frob_control( struct parport *p, unsigned char mask, unsigned char val)
+{
+ unsigned char old;
+
+DPRINTK(KERN_DEBUG "frob_control mask %02x, value %02x\n",mask,val);
+ old = mfc3_read_control(p);
+ mfc3_write_control(p, (old & ~mask) ^ val);
+ return old;
+}
+
+#if 0 /* currently unused */
+static unsigned char status_pc_to_mfc3(unsigned char status)
+{
+ unsigned char ret = 1;
+
+ if (status & PARPORT_STATUS_BUSY) /* Busy */
+ ret &= ~1;
+ if (status & PARPORT_STATUS_ACK) /* Ack */
+ ret |= 8;
+ if (status & PARPORT_STATUS_PAPEROUT) /* PaperOut */
+ ret |= 2;
+ if (status & PARPORT_STATUS_SELECT) /* select */
+ ret |= 4;
+ if (status & PARPORT_STATUS_ERROR) /* error */
+ ret |= 16;
+ return ret;
+}
+#endif
+
+static unsigned char status_mfc3_to_pc(unsigned char status)
+{
+ unsigned char ret = PARPORT_STATUS_BUSY;
+
+ if (status & 1) /* Busy */
+ ret &= ~PARPORT_STATUS_BUSY;
+ if (status & 2) /* PaperOut */
+ ret |= PARPORT_STATUS_PAPEROUT;
+ if (status & 4) /* Selected */
+ ret |= PARPORT_STATUS_SELECT;
+ if (status & 8) /* Ack */
+ ret |= PARPORT_STATUS_ACK;
+ if (status & 16) /* /ERROR */
+ ret |= PARPORT_STATUS_ERROR;
+
+ return ret;
+}
+
+#if 0 /* currently unused */
+static void mfc3_write_status( struct parport *p, unsigned char status)
+{
+DPRINTK(KERN_DEBUG "write_status %02x\n",status);
+ pia(p)->ppra = (pia(p)->ppra & 0xe0) | status_pc_to_mfc3(status);
+}
+#endif
+
+static unsigned char mfc3_read_status(struct parport *p)
+{
+ unsigned char status;
+
+ status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);
+DPRINTK(KERN_DEBUG "read_status %02x\n", status);
+ return status;
+}
+
+#if 0 /* currently unused */
+static void mfc3_change_mode( struct parport *p, int m)
+{
+ /* XXX: This port only has one mode, and I am
+ not sure about the corresponding PC-style mode*/
+}
+#endif
+
+static int use_cnt = 0;
+
+static irqreturn_t mfc3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ int i;
+
+ for( i = 0; i < MAX_MFC; i++)
+ if (this_port[i] != NULL)
+ if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */
+ dummy = pia(this_port[i])->pprb; /* clear irq bit */
+ parport_generic_irq(irq, this_port[i], regs);
+ }
+ return IRQ_HANDLED;
+}
+
+static void mfc3_enable_irq(struct parport *p)
+{
+ pia(p)->crb |= PIA_C1_ENABLE_IRQ;
+}
+
+static void mfc3_disable_irq(struct parport *p)
+{
+ pia(p)->crb &= ~PIA_C1_ENABLE_IRQ;
+}
+
+static void mfc3_data_forward(struct parport *p)
+{
+ DPRINTK(KERN_DEBUG "forward\n");
+ pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
+ pia(p)->pddrb = 255; /* all pins output */
+ pia(p)->crb |= PIA_DDR; /* make data register visible - default */
+}
+
+static void mfc3_data_reverse(struct parport *p)
+{
+ DPRINTK(KERN_DEBUG "reverse\n");
+ pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
+ pia(p)->pddrb = 0; /* all pins input */
+ pia(p)->crb |= PIA_DDR; /* make data register visible - default */
+}
+
+static void mfc3_init_state(struct pardevice *dev, struct parport_state *s)
+{
+ s->u.amiga.data = 0;
+ s->u.amiga.datadir = 255;
+ s->u.amiga.status = 0;
+ s->u.amiga.statusdir = 0xe0;
+}
+
+static void mfc3_save_state(struct parport *p, struct parport_state *s)
+{
+ s->u.amiga.data = pia(p)->pprb;
+ pia(p)->crb &= ~PIA_DDR;
+ s->u.amiga.datadir = pia(p)->pddrb;
+ pia(p)->crb |= PIA_DDR;
+ s->u.amiga.status = pia(p)->ppra;
+ pia(p)->cra &= ~PIA_DDR;
+ s->u.amiga.statusdir = pia(p)->pddrb;
+ pia(p)->cra |= PIA_DDR;
+}
+
+static void mfc3_restore_state(struct parport *p, struct parport_state *s)
+{
+ pia(p)->pprb = s->u.amiga.data;
+ pia(p)->crb &= ~PIA_DDR;
+ pia(p)->pddrb = s->u.amiga.datadir;
+ pia(p)->crb |= PIA_DDR;
+ pia(p)->ppra = s->u.amiga.status;
+ pia(p)->cra &= ~PIA_DDR;
+ pia(p)->pddrb = s->u.amiga.statusdir;
+ pia(p)->cra |= PIA_DDR;
+}
+
+static struct parport_operations pp_mfc3_ops = {
+ .write_data = mfc3_write_data,
+ .read_data = mfc3_read_data,
+
+ .write_control = mfc3_write_control,
+ .read_control = mfc3_read_control,
+ .frob_control = mfc3_frob_control,
+
+ .read_status = mfc3_read_status,
+
+ .enable_irq = mfc3_enable_irq,
+ .disable_irq = mfc3_disable_irq,
+
+ .data_forward = mfc3_data_forward,
+ .data_reverse = mfc3_data_reverse,
+
+ .init_state = mfc3_init_state,
+ .save_state = mfc3_save_state,
+ .restore_state = mfc3_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+/* ----------- Initialisation code --------------------------------- */
+
+static int __init parport_mfc3_init(void)
+{
+ struct parport *p;
+ int pias = 0;
+ struct pia *pp;
+ struct zorro_dev *z = NULL;
+
+ if (!MACH_IS_AMIGA)
+ return -ENODEV;
+
+ while ((z = zorro_find_device(ZORRO_PROD_BSC_MULTIFACE_III, z))) {
+ unsigned long piabase = z->resource.start+PIABASE;
+ if (!request_mem_region(piabase, sizeof(struct pia), "PIA"))
+ continue;
+
+ pp = (struct pia *)ZTWO_VADDR(piabase);
+ pp->crb = 0;
+ pp->pddrb = 255; /* all data pins output */
+ pp->crb = PIA_DDR|32|8;
+ dummy = pp->pddrb; /* reading clears interrupt */
+ pp->cra = 0;
+ pp->pddra = 0xe0; /* /RESET, /DIR ,/AUTO-FEED output */
+ pp->cra = PIA_DDR;
+ pp->ppra = 0; /* reset printer */
+ udelay(10);
+ pp->ppra = 128;
+ p = parport_register_port((unsigned long)pp, IRQ_AMIGA_PORTS,
+ PARPORT_DMA_NONE, &pp_mfc3_ops);
+ if (!p)
+ goto out_port;
+
+ if (p->irq != PARPORT_IRQ_NONE) {
+ if (use_cnt++ == 0)
+ if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, SA_SHIRQ, p->name, &pp_mfc3_ops))
+ goto out_irq;
+ }
+
+ this_port[pias++] = p;
+ printk(KERN_INFO "%s: Multiface III port using irq\n", p->name);
+ /* XXX: set operating mode */
+
+ p->private_data = (void *)piabase;
+ parport_announce_port (p);
+
+ if (pias >= MAX_MFC)
+ break;
+ continue;
+
+ out_irq:
+ parport_put_port(p);
+ out_port:
+ release_mem_region(piabase, sizeof(struct pia));
+ }
+
+ return pias ? 0 : -ENODEV;
+}
+
+static void __exit parport_mfc3_exit(void)
+{
+ int i;
+
+ for (i = 0; i < MAX_MFC; i++) {
+ if (!this_port[i])
+ continue;
+ parport_remove_port(this_port[i]);
+ if (!this_port[i]->irq != PARPORT_IRQ_NONE) {
+ if (--use_cnt == 0)
+ free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);
+ }
+ release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));
+ parport_put_port(this_port[i]);
+ }
+}
+
+
+MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
+MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Paralllel Port");
+MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
+MODULE_LICENSE("GPL");
+
+module_init(parport_mfc3_init)
+module_exit(parport_mfc3_exit)
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
new file mode 100644
index 000000000000..c5774e7855d0
--- /dev/null
+++ b/drivers/parport/parport_pc.c
@@ -0,0 +1,3415 @@
+/* Low-level parallel-port routines for 8255-based PC-style hardware.
+ *
+ * Authors: Phil Blundell <philb@gnu.org>
+ * Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Jose Renau <renau@acm.org>
+ * David Campbell <campbell@torque.net>
+ * Andrea Arcangeli
+ *
+ * based on work by Grant Guenther <grant@torque.net> and Phil Blundell.
+ *
+ * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
+ * DMA support - Bert De Jonghe <bert@sophis.be>
+ * Many ECP bugs fixed. Fred Barnes & Jamie Lokier, 1999
+ * More PCI support now conditional on CONFIG_PCI, 03/2001, Paul G.
+ * Various hacks, Fred Barnes, 04/2001
+ * Updated probing logic - Adam Belay <ambx1@neo.rr.com>
+ */
+
+/* This driver should work with any hardware that is broadly compatible
+ * with that in the IBM PC. This applies to the majority of integrated
+ * I/O chipsets that are commonly available. The expected register
+ * layout is:
+ *
+ * base+0 data
+ * base+1 status
+ * base+2 control
+ *
+ * In addition, there are some optional registers:
+ *
+ * base+3 EPP address
+ * base+4 EPP data
+ * base+0x400 ECP config A
+ * base+0x401 ECP config B
+ * base+0x402 ECP control
+ *
+ * All registers are 8 bits wide and read/write. If your hardware differs
+ * only in register addresses (eg because your registers are on 32-bit
+ * word boundaries) then you can alter the constants in parport_pc.h to
+ * accommodate this.
+ *
+ * Note that the ECP registers may not start at offset 0x400 for PCI cards,
+ * but rather will start at port->base_hi.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/pnp.h>
+#include <linux/sysctl.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+
+#include <linux/parport.h>
+#include <linux/parport_pc.h>
+#include <linux/via.h>
+#include <asm/parport.h>
+
+#define PARPORT_PC_MAX_PORTS PARPORT_MAX
+
+/* ECR modes */
+#define ECR_SPP 00
+#define ECR_PS2 01
+#define ECR_PPF 02
+#define ECR_ECP 03
+#define ECR_EPP 04
+#define ECR_VND 05
+#define ECR_TST 06
+#define ECR_CNF 07
+#define ECR_MODE_MASK 0xe0
+#define ECR_WRITE(p,v) frob_econtrol((p),0xff,(v))
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DPRINTK printk
+#else
+#define DPRINTK(stuff...)
+#endif
+
+
+#define NR_SUPERIOS 3
+static struct superio_struct { /* For Super-IO chips autodetection */
+ int io;
+ int irq;
+ int dma;
+} superios[NR_SUPERIOS] __devinitdata = { {0,},};
+
+static int user_specified;
+#if defined(CONFIG_PARPORT_PC_SUPERIO) || \
+ (defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
+static int verbose_probing;
+#endif
+static int pci_registered_parport;
+static int pnp_registered_parport;
+
+/* frob_control, but for ECR */
+static void frob_econtrol (struct parport *pb, unsigned char m,
+ unsigned char v)
+{
+ unsigned char ectr = 0;
+
+ if (m != 0xff)
+ ectr = inb (ECONTROL (pb));
+
+ DPRINTK (KERN_DEBUG "frob_econtrol(%02x,%02x): %02x -> %02x\n",
+ m, v, ectr, (ectr & ~m) ^ v);
+
+ outb ((ectr & ~m) ^ v, ECONTROL (pb));
+}
+
+static __inline__ void frob_set_mode (struct parport *p, int mode)
+{
+ frob_econtrol (p, ECR_MODE_MASK, mode << 5);
+}
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+/* Safely change the mode bits in the ECR
+ Returns:
+ 0 : Success
+ -EBUSY: Could not drain FIFO in some finite amount of time,
+ mode not changed!
+ */
+static int change_mode(struct parport *p, int m)
+{
+ const struct parport_pc_private *priv = p->physport->private_data;
+ unsigned char oecr;
+ int mode;
+
+ DPRINTK(KERN_INFO "parport change_mode ECP-ISA to mode 0x%02x\n",m);
+
+ if (!priv->ecr) {
+ printk (KERN_DEBUG "change_mode: but there's no ECR!\n");
+ return 0;
+ }
+
+ /* Bits <7:5> contain the mode. */
+ oecr = inb (ECONTROL (p));
+ mode = (oecr >> 5) & 0x7;
+ if (mode == m) return 0;
+
+ if (mode >= 2 && !(priv->ctr & 0x20)) {
+ /* This mode resets the FIFO, so we may
+ * have to wait for it to drain first. */
+ unsigned long expire = jiffies + p->physport->cad->timeout;
+ int counter;
+ switch (mode) {
+ case ECR_PPF: /* Parallel Port FIFO mode */
+ case ECR_ECP: /* ECP Parallel Port mode */
+ /* Busy wait for 200us */
+ for (counter = 0; counter < 40; counter++) {
+ if (inb (ECONTROL (p)) & 0x01)
+ break;
+ if (signal_pending (current)) break;
+ udelay (5);
+ }
+
+ /* Poll slowly. */
+ while (!(inb (ECONTROL (p)) & 0x01)) {
+ if (time_after_eq (jiffies, expire))
+ /* The FIFO is stuck. */
+ return -EBUSY;
+ __set_current_state (TASK_INTERRUPTIBLE);
+ schedule_timeout ((HZ + 99) / 100);
+ if (signal_pending (current))
+ break;
+ }
+ }
+ }
+
+ if (mode >= 2 && m >= 2) {
+ /* We have to go through mode 001 */
+ oecr &= ~(7 << 5);
+ oecr |= ECR_PS2 << 5;
+ ECR_WRITE (p, oecr);
+ }
+
+ /* Set the mode. */
+ oecr &= ~(7 << 5);
+ oecr |= m << 5;
+ ECR_WRITE (p, oecr);
+ return 0;
+}
+
+#ifdef CONFIG_PARPORT_1284
+/* Find FIFO lossage; FIFO is reset */
+#if 0
+static int get_fifo_residue (struct parport *p)
+{
+ int residue;
+ int cnfga;
+ const struct parport_pc_private *priv = p->physport->private_data;
+
+ /* Adjust for the contents of the FIFO. */
+ for (residue = priv->fifo_depth; ; residue--) {
+ if (inb (ECONTROL (p)) & 0x2)
+ /* Full up. */
+ break;
+
+ outb (0, FIFO (p));
+ }
+
+ printk (KERN_DEBUG "%s: %d PWords were left in FIFO\n", p->name,
+ residue);
+
+ /* Reset the FIFO. */
+ frob_set_mode (p, ECR_PS2);
+
+ /* Now change to config mode and clean up. FIXME */
+ frob_set_mode (p, ECR_CNF);
+ cnfga = inb (CONFIGA (p));
+ printk (KERN_DEBUG "%s: cnfgA contains 0x%02x\n", p->name, cnfga);
+
+ if (!(cnfga & (1<<2))) {
+ printk (KERN_DEBUG "%s: Accounting for extra byte\n", p->name);
+ residue++;
+ }
+
+ /* Don't care about partial PWords until support is added for
+ * PWord != 1 byte. */
+
+ /* Back to PS2 mode. */
+ frob_set_mode (p, ECR_PS2);
+
+ DPRINTK (KERN_DEBUG "*** get_fifo_residue: done residue collecting (ecr = 0x%2.2x)\n", inb (ECONTROL (p)));
+ return residue;
+}
+#endif /* 0 */
+#endif /* IEEE 1284 support */
+#endif /* FIFO support */
+
+/*
+ * Clear TIMEOUT BIT in EPP MODE
+ *
+ * This is also used in SPP detection.
+ */
+static int clear_epp_timeout(struct parport *pb)
+{
+ unsigned char r;
+
+ if (!(parport_pc_read_status(pb) & 0x01))
+ return 1;
+
+ /* To clear timeout some chips require double read */
+ parport_pc_read_status(pb);
+ r = parport_pc_read_status(pb);
+ outb (r | 0x01, STATUS (pb)); /* Some reset by writing 1 */
+ outb (r & 0xfe, STATUS (pb)); /* Others by writing 0 */
+ r = parport_pc_read_status(pb);
+
+ return !(r & 0x01);
+}
+
+/*
+ * Access functions.
+ *
+ * Most of these aren't static because they may be used by the
+ * parport_xxx_yyy macros. extern __inline__ versions of several
+ * of these are in parport_pc.h.
+ */
+
+static irqreturn_t parport_pc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ parport_generic_irq(irq, (struct parport *) dev_id, regs);
+ /* FIXME! Was it really ours? */
+ return IRQ_HANDLED;
+}
+
+static void parport_pc_init_state(struct pardevice *dev, struct parport_state *s)
+{
+ s->u.pc.ctr = 0xc;
+ if (dev->irq_func &&
+ dev->port->irq != PARPORT_IRQ_NONE)
+ /* Set ackIntEn */
+ s->u.pc.ctr |= 0x10;
+
+ s->u.pc.ecr = 0x34; /* NetMos chip can cause problems 0x24;
+ * D.Gruszka VScom */
+}
+
+static void parport_pc_save_state(struct parport *p, struct parport_state *s)
+{
+ const struct parport_pc_private *priv = p->physport->private_data;
+ s->u.pc.ctr = priv->ctr;
+ if (priv->ecr)
+ s->u.pc.ecr = inb (ECONTROL (p));
+}
+
+static void parport_pc_restore_state(struct parport *p, struct parport_state *s)
+{
+ struct parport_pc_private *priv = p->physport->private_data;
+ register unsigned char c = s->u.pc.ctr & priv->ctr_writable;
+ outb (c, CONTROL (p));
+ priv->ctr = c;
+ if (priv->ecr)
+ ECR_WRITE (p, s->u.pc.ecr);
+}
+
+#ifdef CONFIG_PARPORT_1284
+static size_t parport_pc_epp_read_data (struct parport *port, void *buf,
+ size_t length, int flags)
+{
+ size_t got = 0;
+
+ if (flags & PARPORT_W91284PIC) {
+ unsigned char status;
+ size_t left = length;
+
+ /* use knowledge about data lines..:
+ * nFault is 0 if there is at least 1 byte in the Warp's FIFO
+ * pError is 1 if there are 16 bytes in the Warp's FIFO
+ */
+ status = inb (STATUS (port));
+
+ while (!(status & 0x08) && (got < length)) {
+ if ((left >= 16) && (status & 0x20) && !(status & 0x08)) {
+ /* can grab 16 bytes from warp fifo */
+ if (!((long)buf & 0x03)) {
+ insl (EPPDATA (port), buf, 4);
+ } else {
+ insb (EPPDATA (port), buf, 16);
+ }
+ buf += 16;
+ got += 16;
+ left -= 16;
+ } else {
+ /* grab single byte from the warp fifo */
+ *((char *)buf) = inb (EPPDATA (port));
+ buf++;
+ got++;
+ left--;
+ }
+ status = inb (STATUS (port));
+ if (status & 0x01) {
+ /* EPP timeout should never occur... */
+ printk (KERN_DEBUG "%s: EPP timeout occurred while talking to "
+ "w91284pic (should not have done)\n", port->name);
+ clear_epp_timeout (port);
+ }
+ }
+ return got;
+ }
+ if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
+ if (!(((long)buf | length) & 0x03)) {
+ insl (EPPDATA (port), buf, (length >> 2));
+ } else {
+ insb (EPPDATA (port), buf, length);
+ }
+ if (inb (STATUS (port)) & 0x01) {
+ clear_epp_timeout (port);
+ return -EIO;
+ }
+ return length;
+ }
+ for (; got < length; got++) {
+ *((char*)buf) = inb (EPPDATA(port));
+ buf++;
+ if (inb (STATUS (port)) & 0x01) {
+ /* EPP timeout */
+ clear_epp_timeout (port);
+ break;
+ }
+ }
+
+ return got;
+}
+
+static size_t parport_pc_epp_write_data (struct parport *port, const void *buf,
+ size_t length, int flags)
+{
+ size_t written = 0;
+
+ if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
+ if (!(((long)buf | length) & 0x03)) {
+ outsl (EPPDATA (port), buf, (length >> 2));
+ } else {
+ outsb (EPPDATA (port), buf, length);
+ }
+ if (inb (STATUS (port)) & 0x01) {
+ clear_epp_timeout (port);
+ return -EIO;
+ }
+ return length;
+ }
+ for (; written < length; written++) {
+ outb (*((char*)buf), EPPDATA(port));
+ buf++;
+ if (inb (STATUS(port)) & 0x01) {
+ clear_epp_timeout (port);
+ break;
+ }
+ }
+
+ return written;
+}
+
+static size_t parport_pc_epp_read_addr (struct parport *port, void *buf,
+ size_t length, int flags)
+{
+ size_t got = 0;
+
+ if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
+ insb (EPPADDR (port), buf, length);
+ if (inb (STATUS (port)) & 0x01) {
+ clear_epp_timeout (port);
+ return -EIO;
+ }
+ return length;
+ }
+ for (; got < length; got++) {
+ *((char*)buf) = inb (EPPADDR (port));
+ buf++;
+ if (inb (STATUS (port)) & 0x01) {
+ clear_epp_timeout (port);
+ break;
+ }
+ }
+
+ return got;
+}
+
+static size_t parport_pc_epp_write_addr (struct parport *port,
+ const void *buf, size_t length,
+ int flags)
+{
+ size_t written = 0;
+
+ if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
+ outsb (EPPADDR (port), buf, length);
+ if (inb (STATUS (port)) & 0x01) {
+ clear_epp_timeout (port);
+ return -EIO;
+ }
+ return length;
+ }
+ for (; written < length; written++) {
+ outb (*((char*)buf), EPPADDR (port));
+ buf++;
+ if (inb (STATUS (port)) & 0x01) {
+ clear_epp_timeout (port);
+ break;
+ }
+ }
+
+ return written;
+}
+
+static size_t parport_pc_ecpepp_read_data (struct parport *port, void *buf,
+ size_t length, int flags)
+{
+ size_t got;
+
+ frob_set_mode (port, ECR_EPP);
+ parport_pc_data_reverse (port);
+ parport_pc_write_control (port, 0x4);
+ got = parport_pc_epp_read_data (port, buf, length, flags);
+ frob_set_mode (port, ECR_PS2);
+
+ return got;
+}
+
+static size_t parport_pc_ecpepp_write_data (struct parport *port,
+ const void *buf, size_t length,
+ int flags)
+{
+ size_t written;
+
+ frob_set_mode (port, ECR_EPP);
+ parport_pc_write_control (port, 0x4);
+ parport_pc_data_forward (port);
+ written = parport_pc_epp_write_data (port, buf, length, flags);
+ frob_set_mode (port, ECR_PS2);
+
+ return written;
+}
+
+static size_t parport_pc_ecpepp_read_addr (struct parport *port, void *buf,
+ size_t length, int flags)
+{
+ size_t got;
+
+ frob_set_mode (port, ECR_EPP);
+ parport_pc_data_reverse (port);
+ parport_pc_write_control (port, 0x4);
+ got = parport_pc_epp_read_addr (port, buf, length, flags);
+ frob_set_mode (port, ECR_PS2);
+
+ return got;
+}
+
+static size_t parport_pc_ecpepp_write_addr (struct parport *port,
+ const void *buf, size_t length,
+ int flags)
+{
+ size_t written;
+
+ frob_set_mode (port, ECR_EPP);
+ parport_pc_write_control (port, 0x4);
+ parport_pc_data_forward (port);
+ written = parport_pc_epp_write_addr (port, buf, length, flags);
+ frob_set_mode (port, ECR_PS2);
+
+ return written;
+}
+#endif /* IEEE 1284 support */
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+static size_t parport_pc_fifo_write_block_pio (struct parport *port,
+ const void *buf, size_t length)
+{
+ int ret = 0;
+ const unsigned char *bufp = buf;
+ size_t left = length;
+ unsigned long expire = jiffies + port->physport->cad->timeout;
+ const int fifo = FIFO (port);
+ int poll_for = 8; /* 80 usecs */
+ const struct parport_pc_private *priv = port->physport->private_data;
+ const int fifo_depth = priv->fifo_depth;
+
+ port = port->physport;
+
+ /* We don't want to be interrupted every character. */
+ parport_pc_disable_irq (port);
+ /* set nErrIntrEn and serviceIntr */
+ frob_econtrol (port, (1<<4) | (1<<2), (1<<4) | (1<<2));
+
+ /* Forward mode. */
+ parport_pc_data_forward (port); /* Must be in PS2 mode */
+
+ while (left) {
+ unsigned char byte;
+ unsigned char ecrval = inb (ECONTROL (port));
+ int i = 0;
+
+ if (need_resched() && time_before (jiffies, expire))
+ /* Can't yield the port. */
+ schedule ();
+
+ /* Anyone else waiting for the port? */
+ if (port->waithead) {
+ printk (KERN_DEBUG "Somebody wants the port\n");
+ break;
+ }
+
+ if (ecrval & 0x02) {
+ /* FIFO is full. Wait for interrupt. */
+
+ /* Clear serviceIntr */
+ ECR_WRITE (port, ecrval & ~(1<<2));
+ false_alarm:
+ ret = parport_wait_event (port, HZ);
+ if (ret < 0) break;
+ ret = 0;
+ if (!time_before (jiffies, expire)) {
+ /* Timed out. */
+ printk (KERN_DEBUG "FIFO write timed out\n");
+ break;
+ }
+ ecrval = inb (ECONTROL (port));
+ if (!(ecrval & (1<<2))) {
+ if (need_resched() &&
+ time_before (jiffies, expire))
+ schedule ();
+
+ goto false_alarm;
+ }
+
+ continue;
+ }
+
+ /* Can't fail now. */
+ expire = jiffies + port->cad->timeout;
+
+ poll:
+ if (signal_pending (current))
+ break;
+
+ if (ecrval & 0x01) {
+ /* FIFO is empty. Blast it full. */
+ const int n = left < fifo_depth ? left : fifo_depth;
+ outsb (fifo, bufp, n);
+ bufp += n;
+ left -= n;
+
+ /* Adjust the poll time. */
+ if (i < (poll_for - 2)) poll_for--;
+ continue;
+ } else if (i++ < poll_for) {
+ udelay (10);
+ ecrval = inb (ECONTROL (port));
+ goto poll;
+ }
+
+ /* Half-full (call me an optimist) */
+ byte = *bufp++;
+ outb (byte, fifo);
+ left--;
+ }
+
+dump_parport_state ("leave fifo_write_block_pio", port);
+ return length - left;
+}
+
+static size_t parport_pc_fifo_write_block_dma (struct parport *port,
+ const void *buf, size_t length)
+{
+ int ret = 0;
+ unsigned long dmaflag;
+ size_t left = length;
+ const struct parport_pc_private *priv = port->physport->private_data;
+ dma_addr_t dma_addr, dma_handle;
+ size_t maxlen = 0x10000; /* max 64k per DMA transfer */
+ unsigned long start = (unsigned long) buf;
+ unsigned long end = (unsigned long) buf + length - 1;
+
+dump_parport_state ("enter fifo_write_block_dma", port);
+ if (end < MAX_DMA_ADDRESS) {
+ /* If it would cross a 64k boundary, cap it at the end. */
+ if ((start ^ end) & ~0xffffUL)
+ maxlen = 0x10000 - (start & 0xffff);
+
+ dma_addr = dma_handle = pci_map_single(priv->dev, (void *)buf, length,
+ PCI_DMA_TODEVICE);
+ } else {
+ /* above 16 MB we use a bounce buffer as ISA-DMA is not possible */
+ maxlen = PAGE_SIZE; /* sizeof(priv->dma_buf) */
+ dma_addr = priv->dma_handle;
+ dma_handle = 0;
+ }
+
+ port = port->physport;
+
+ /* We don't want to be interrupted every character. */
+ parport_pc_disable_irq (port);
+ /* set nErrIntrEn and serviceIntr */
+ frob_econtrol (port, (1<<4) | (1<<2), (1<<4) | (1<<2));
+
+ /* Forward mode. */
+ parport_pc_data_forward (port); /* Must be in PS2 mode */
+
+ while (left) {
+ unsigned long expire = jiffies + port->physport->cad->timeout;
+
+ size_t count = left;
+
+ if (count > maxlen)
+ count = maxlen;
+
+ if (!dma_handle) /* bounce buffer ! */
+ memcpy(priv->dma_buf, buf, count);
+
+ dmaflag = claim_dma_lock();
+ disable_dma(port->dma);
+ clear_dma_ff(port->dma);
+ set_dma_mode(port->dma, DMA_MODE_WRITE);
+ set_dma_addr(port->dma, dma_addr);
+ set_dma_count(port->dma, count);
+
+ /* Set DMA mode */
+ frob_econtrol (port, 1<<3, 1<<3);
+
+ /* Clear serviceIntr */
+ frob_econtrol (port, 1<<2, 0);
+
+ enable_dma(port->dma);
+ release_dma_lock(dmaflag);
+
+ /* assume DMA will be successful */
+ left -= count;
+ buf += count;
+ if (dma_handle) dma_addr += count;
+
+ /* Wait for interrupt. */
+ false_alarm:
+ ret = parport_wait_event (port, HZ);
+ if (ret < 0) break;
+ ret = 0;
+ if (!time_before (jiffies, expire)) {
+ /* Timed out. */
+ printk (KERN_DEBUG "DMA write timed out\n");
+ break;
+ }
+ /* Is serviceIntr set? */
+ if (!(inb (ECONTROL (port)) & (1<<2))) {
+ cond_resched();
+
+ goto false_alarm;
+ }
+
+ dmaflag = claim_dma_lock();
+ disable_dma(port->dma);
+ clear_dma_ff(port->dma);
+ count = get_dma_residue(port->dma);
+ release_dma_lock(dmaflag);
+
+ cond_resched(); /* Can't yield the port. */
+
+ /* Anyone else waiting for the port? */
+ if (port->waithead) {
+ printk (KERN_DEBUG "Somebody wants the port\n");
+ break;
+ }
+
+ /* update for possible DMA residue ! */
+ buf -= count;
+ left += count;
+ if (dma_handle) dma_addr -= count;
+ }
+
+ /* Maybe got here through break, so adjust for DMA residue! */
+ dmaflag = claim_dma_lock();
+ disable_dma(port->dma);
+ clear_dma_ff(port->dma);
+ left += get_dma_residue(port->dma);
+ release_dma_lock(dmaflag);
+
+ /* Turn off DMA mode */
+ frob_econtrol (port, 1<<3, 0);
+
+ if (dma_handle)
+ pci_unmap_single(priv->dev, dma_handle, length, PCI_DMA_TODEVICE);
+
+dump_parport_state ("leave fifo_write_block_dma", port);
+ return length - left;
+}
+
+/* Parallel Port FIFO mode (ECP chipsets) */
+static size_t parport_pc_compat_write_block_pio (struct parport *port,
+ const void *buf, size_t length,
+ int flags)
+{
+ size_t written;
+ int r;
+ unsigned long expire;
+ const struct parport_pc_private *priv = port->physport->private_data;
+
+ /* Special case: a timeout of zero means we cannot call schedule().
+ * Also if O_NONBLOCK is set then use the default implementation. */
+ if (port->physport->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
+ return parport_ieee1284_write_compat (port, buf,
+ length, flags);
+
+ /* Set up parallel port FIFO mode.*/
+ parport_pc_data_forward (port); /* Must be in PS2 mode */
+ parport_pc_frob_control (port, PARPORT_CONTROL_STROBE, 0);
+ r = change_mode (port, ECR_PPF); /* Parallel port FIFO */
+ if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_PPF failed\n", port->name);
+
+ port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
+
+ /* Write the data to the FIFO. */
+ if (port->dma != PARPORT_DMA_NONE)
+ written = parport_pc_fifo_write_block_dma (port, buf, length);
+ else
+ written = parport_pc_fifo_write_block_pio (port, buf, length);
+
+ /* Finish up. */
+ /* For some hardware we don't want to touch the mode until
+ * the FIFO is empty, so allow 4 seconds for each position
+ * in the fifo.
+ */
+ expire = jiffies + (priv->fifo_depth * HZ * 4);
+ do {
+ /* Wait for the FIFO to empty */
+ r = change_mode (port, ECR_PS2);
+ if (r != -EBUSY) {
+ break;
+ }
+ } while (time_before (jiffies, expire));
+ if (r == -EBUSY) {
+
+ printk (KERN_DEBUG "%s: FIFO is stuck\n", port->name);
+
+ /* Prevent further data transfer. */
+ frob_set_mode (port, ECR_TST);
+
+ /* Adjust for the contents of the FIFO. */
+ for (written -= priv->fifo_depth; ; written++) {
+ if (inb (ECONTROL (port)) & 0x2) {
+ /* Full up. */
+ break;
+ }
+ outb (0, FIFO (port));
+ }
+
+ /* Reset the FIFO and return to PS2 mode. */
+ frob_set_mode (port, ECR_PS2);
+ }
+
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY);
+ if (r)
+ printk (KERN_DEBUG
+ "%s: BUSY timeout (%d) in compat_write_block_pio\n",
+ port->name, r);
+
+ port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ return written;
+}
+
+/* ECP */
+#ifdef CONFIG_PARPORT_1284
+static size_t parport_pc_ecp_write_block_pio (struct parport *port,
+ const void *buf, size_t length,
+ int flags)
+{
+ size_t written;
+ int r;
+ unsigned long expire;
+ const struct parport_pc_private *priv = port->physport->private_data;
+
+ /* Special case: a timeout of zero means we cannot call schedule().
+ * Also if O_NONBLOCK is set then use the default implementation. */
+ if (port->physport->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
+ return parport_ieee1284_ecp_write_data (port, buf,
+ length, flags);
+
+ /* Switch to forward mode if necessary. */
+ if (port->physport->ieee1284.phase != IEEE1284_PH_FWD_IDLE) {
+ /* Event 47: Set nInit high. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_INIT
+ | PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_INIT
+ | PARPORT_CONTROL_AUTOFD);
+
+ /* Event 49: PError goes high. */
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT,
+ PARPORT_STATUS_PAPEROUT);
+ if (r) {
+ printk (KERN_DEBUG "%s: PError timeout (%d) "
+ "in ecp_write_block_pio\n", port->name, r);
+ }
+ }
+
+ /* Set up ECP parallel port mode.*/
+ parport_pc_data_forward (port); /* Must be in PS2 mode */
+ parport_pc_frob_control (port,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD,
+ 0);
+ r = change_mode (port, ECR_ECP); /* ECP FIFO */
+ if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_ECP failed\n", port->name);
+ port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
+
+ /* Write the data to the FIFO. */
+ if (port->dma != PARPORT_DMA_NONE)
+ written = parport_pc_fifo_write_block_dma (port, buf, length);
+ else
+ written = parport_pc_fifo_write_block_pio (port, buf, length);
+
+ /* Finish up. */
+ /* For some hardware we don't want to touch the mode until
+ * the FIFO is empty, so allow 4 seconds for each position
+ * in the fifo.
+ */
+ expire = jiffies + (priv->fifo_depth * (HZ * 4));
+ do {
+ /* Wait for the FIFO to empty */
+ r = change_mode (port, ECR_PS2);
+ if (r != -EBUSY) {
+ break;
+ }
+ } while (time_before (jiffies, expire));
+ if (r == -EBUSY) {
+
+ printk (KERN_DEBUG "%s: FIFO is stuck\n", port->name);
+
+ /* Prevent further data transfer. */
+ frob_set_mode (port, ECR_TST);
+
+ /* Adjust for the contents of the FIFO. */
+ for (written -= priv->fifo_depth; ; written++) {
+ if (inb (ECONTROL (port)) & 0x2) {
+ /* Full up. */
+ break;
+ }
+ outb (0, FIFO (port));
+ }
+
+ /* Reset the FIFO and return to PS2 mode. */
+ frob_set_mode (port, ECR_PS2);
+
+ /* Host transfer recovery. */
+ parport_pc_data_reverse (port); /* Must be in PS2 mode */
+ udelay (5);
+ parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
+ r = parport_wait_peripheral (port, PARPORT_STATUS_PAPEROUT, 0);
+ if (r)
+ printk (KERN_DEBUG "%s: PE,1 timeout (%d) "
+ "in ecp_write_block_pio\n", port->name, r);
+
+ parport_frob_control (port,
+ PARPORT_CONTROL_INIT,
+ PARPORT_CONTROL_INIT);
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT,
+ PARPORT_STATUS_PAPEROUT);
+ if (r)
+ printk (KERN_DEBUG "%s: PE,2 timeout (%d) "
+ "in ecp_write_block_pio\n", port->name, r);
+ }
+
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_BUSY,
+ PARPORT_STATUS_BUSY);
+ if(r)
+ printk (KERN_DEBUG
+ "%s: BUSY timeout (%d) in ecp_write_block_pio\n",
+ port->name, r);
+
+ port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ return written;
+}
+
+#if 0
+static size_t parport_pc_ecp_read_block_pio (struct parport *port,
+ void *buf, size_t length,
+ int flags)
+{
+ size_t left = length;
+ size_t fifofull;
+ int r;
+ const int fifo = FIFO(port);
+ const struct parport_pc_private *priv = port->physport->private_data;
+ const int fifo_depth = priv->fifo_depth;
+ char *bufp = buf;
+
+ port = port->physport;
+DPRINTK (KERN_DEBUG "parport_pc: parport_pc_ecp_read_block_pio\n");
+dump_parport_state ("enter fcn", port);
+
+ /* Special case: a timeout of zero means we cannot call schedule().
+ * Also if O_NONBLOCK is set then use the default implementation. */
+ if (port->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
+ return parport_ieee1284_ecp_read_data (port, buf,
+ length, flags);
+
+ if (port->ieee1284.mode == IEEE1284_MODE_ECPRLE) {
+ /* If the peripheral is allowed to send RLE compressed
+ * data, it is possible for a byte to expand to 128
+ * bytes in the FIFO. */
+ fifofull = 128;
+ } else {
+ fifofull = fifo_depth;
+ }
+
+ /* If the caller wants less than a full FIFO's worth of data,
+ * go through software emulation. Otherwise we may have to throw
+ * away data. */
+ if (length < fifofull)
+ return parport_ieee1284_ecp_read_data (port, buf,
+ length, flags);
+
+ if (port->ieee1284.phase != IEEE1284_PH_REV_IDLE) {
+ /* change to reverse-idle phase (must be in forward-idle) */
+
+ /* Event 38: Set nAutoFd low (also make sure nStrobe is high) */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD
+ | PARPORT_CONTROL_STROBE,
+ PARPORT_CONTROL_AUTOFD);
+ parport_pc_data_reverse (port); /* Must be in PS2 mode */
+ udelay (5);
+ /* Event 39: Set nInit low to initiate bus reversal */
+ parport_frob_control (port,
+ PARPORT_CONTROL_INIT,
+ 0);
+ /* Event 40: Wait for nAckReverse (PError) to go low */
+ r = parport_wait_peripheral (port, PARPORT_STATUS_PAPEROUT, 0);
+ if (r) {
+ printk (KERN_DEBUG "%s: PE timeout Event 40 (%d) "
+ "in ecp_read_block_pio\n", port->name, r);
+ return 0;
+ }
+ }
+
+ /* Set up ECP FIFO mode.*/
+/* parport_pc_frob_control (port,
+ PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD); */
+ r = change_mode (port, ECR_ECP); /* ECP FIFO */
+ if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_ECP failed\n", port->name);
+
+ port->ieee1284.phase = IEEE1284_PH_REV_DATA;
+
+ /* the first byte must be collected manually */
+dump_parport_state ("pre 43", port);
+ /* Event 43: Wait for nAck to go low */
+ r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0);
+ if (r) {
+ /* timed out while reading -- no data */
+ printk (KERN_DEBUG "PIO read timed out (initial byte)\n");
+ goto out_no_data;
+ }
+ /* read byte */
+ *bufp++ = inb (DATA (port));
+ left--;
+dump_parport_state ("43-44", port);
+ /* Event 44: nAutoFd (HostAck) goes high to acknowledge */
+ parport_pc_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ 0);
+dump_parport_state ("pre 45", port);
+ /* Event 45: Wait for nAck to go high */
+/* r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, PARPORT_STATUS_ACK); */
+dump_parport_state ("post 45", port);
+r = 0;
+ if (r) {
+ /* timed out while waiting for peripheral to respond to ack */
+ printk (KERN_DEBUG "ECP PIO read timed out (waiting for nAck)\n");
+
+ /* keep hold of the byte we've got already */
+ goto out_no_data;
+ }
+ /* Event 46: nAutoFd (HostAck) goes low to accept more data */
+ parport_pc_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+
+
+dump_parport_state ("rev idle", port);
+ /* Do the transfer. */
+ while (left > fifofull) {
+ int ret;
+ unsigned long expire = jiffies + port->cad->timeout;
+ unsigned char ecrval = inb (ECONTROL (port));
+
+ if (need_resched() && time_before (jiffies, expire))
+ /* Can't yield the port. */
+ schedule ();
+
+ /* At this point, the FIFO may already be full. In
+ * that case ECP is already holding back the
+ * peripheral (assuming proper design) with a delayed
+ * handshake. Work fast to avoid a peripheral
+ * timeout. */
+
+ if (ecrval & 0x01) {
+ /* FIFO is empty. Wait for interrupt. */
+dump_parport_state ("FIFO empty", port);
+
+ /* Anyone else waiting for the port? */
+ if (port->waithead) {
+ printk (KERN_DEBUG "Somebody wants the port\n");
+ break;
+ }
+
+ /* Clear serviceIntr */
+ ECR_WRITE (port, ecrval & ~(1<<2));
+ false_alarm:
+dump_parport_state ("waiting", port);
+ ret = parport_wait_event (port, HZ);
+DPRINTK (KERN_DEBUG "parport_wait_event returned %d\n", ret);
+ if (ret < 0)
+ break;
+ ret = 0;
+ if (!time_before (jiffies, expire)) {
+ /* Timed out. */
+dump_parport_state ("timeout", port);
+ printk (KERN_DEBUG "PIO read timed out\n");
+ break;
+ }
+ ecrval = inb (ECONTROL (port));
+ if (!(ecrval & (1<<2))) {
+ if (need_resched() &&
+ time_before (jiffies, expire)) {
+ schedule ();
+ }
+ goto false_alarm;
+ }
+
+ /* Depending on how the FIFO threshold was
+ * set, how long interrupt service took, and
+ * how fast the peripheral is, we might be
+ * lucky and have a just filled FIFO. */
+ continue;
+ }
+
+ if (ecrval & 0x02) {
+ /* FIFO is full. */
+dump_parport_state ("FIFO full", port);
+ insb (fifo, bufp, fifo_depth);
+ bufp += fifo_depth;
+ left -= fifo_depth;
+ continue;
+ }
+
+DPRINTK (KERN_DEBUG "*** ecp_read_block_pio: reading one byte from the FIFO\n");
+
+ /* FIFO not filled. We will cycle this loop for a while
+ * and either the peripheral will fill it faster,
+ * tripping a fast empty with insb, or we empty it. */
+ *bufp++ = inb (fifo);
+ left--;
+ }
+
+ /* scoop up anything left in the FIFO */
+ while (left && !(inb (ECONTROL (port) & 0x01))) {
+ *bufp++ = inb (fifo);
+ left--;
+ }
+
+ port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+dump_parport_state ("rev idle2", port);
+
+out_no_data:
+
+ /* Go to forward idle mode to shut the peripheral up (event 47). */
+ parport_frob_control (port, PARPORT_CONTROL_INIT, PARPORT_CONTROL_INIT);
+
+ /* event 49: PError goes high */
+ r = parport_wait_peripheral (port,
+ PARPORT_STATUS_PAPEROUT,
+ PARPORT_STATUS_PAPEROUT);
+ if (r) {
+ printk (KERN_DEBUG
+ "%s: PE timeout FWDIDLE (%d) in ecp_read_block_pio\n",
+ port->name, r);
+ }
+
+ port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+
+ /* Finish up. */
+ {
+ int lost = get_fifo_residue (port);
+ if (lost)
+ /* Shouldn't happen with compliant peripherals. */
+ printk (KERN_DEBUG "%s: DATA LOSS (%d bytes)!\n",
+ port->name, lost);
+ }
+
+dump_parport_state ("fwd idle", port);
+ return length - left;
+}
+#endif /* 0 */
+#endif /* IEEE 1284 support */
+#endif /* Allowed to use FIFO/DMA */
+
+
+/*
+ * ******************************************
+ * INITIALISATION AND MODULE STUFF BELOW HERE
+ * ******************************************
+ */
+
+/* GCC is not inlining extern inline function later overwriten to non-inline,
+ so we use outlined_ variants here. */
+static struct parport_operations parport_pc_ops =
+{
+ .write_data = parport_pc_write_data,
+ .read_data = parport_pc_read_data,
+
+ .write_control = parport_pc_write_control,
+ .read_control = parport_pc_read_control,
+ .frob_control = parport_pc_frob_control,
+
+ .read_status = parport_pc_read_status,
+
+ .enable_irq = parport_pc_enable_irq,
+ .disable_irq = parport_pc_disable_irq,
+
+ .data_forward = parport_pc_data_forward,
+ .data_reverse = parport_pc_data_reverse,
+
+ .init_state = parport_pc_init_state,
+ .save_state = parport_pc_save_state,
+ .restore_state = parport_pc_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+#ifdef CONFIG_PARPORT_PC_SUPERIO
+/* Super-IO chipset detection, Winbond, SMSC */
+static void __devinit show_parconfig_smsc37c669(int io, int key)
+{
+ int cr1,cr4,cra,cr23,cr26,cr27,i=0;
+ static const char *modes[]={ "SPP and Bidirectional (PS/2)",
+ "EPP and SPP",
+ "ECP",
+ "ECP and EPP" };
+
+ outb(key,io);
+ outb(key,io);
+ outb(1,io);
+ cr1=inb(io+1);
+ outb(4,io);
+ cr4=inb(io+1);
+ outb(0x0a,io);
+ cra=inb(io+1);
+ outb(0x23,io);
+ cr23=inb(io+1);
+ outb(0x26,io);
+ cr26=inb(io+1);
+ outb(0x27,io);
+ cr27=inb(io+1);
+ outb(0xaa,io);
+
+ if (verbose_probing) {
+ printk (KERN_INFO "SMSC 37c669 LPT Config: cr_1=0x%02x, 4=0x%02x, "
+ "A=0x%2x, 23=0x%02x, 26=0x%02x, 27=0x%02x\n",
+ cr1,cr4,cra,cr23,cr26,cr27);
+
+ /* The documentation calls DMA and IRQ-Lines by letters, so
+ the board maker can/will wire them
+ appropriately/randomly... G=reserved H=IDE-irq, */
+ printk (KERN_INFO "SMSC LPT Config: io=0x%04x, irq=%c, dma=%c, "
+ "fifo threshold=%d\n", cr23*4,
+ (cr27 &0x0f) ? 'A'-1+(cr27 &0x0f): '-',
+ (cr26 &0x0f) ? 'A'-1+(cr26 &0x0f): '-', cra & 0x0f);
+ printk(KERN_INFO "SMSC LPT Config: enabled=%s power=%s\n",
+ (cr23*4 >=0x100) ?"yes":"no", (cr1 & 4) ? "yes" : "no");
+ printk(KERN_INFO "SMSC LPT Config: Port mode=%s, EPP version =%s\n",
+ (cr1 & 0x08 ) ? "Standard mode only (SPP)" : modes[cr4 & 0x03],
+ (cr4 & 0x40) ? "1.7" : "1.9");
+ }
+
+ /* Heuristics ! BIOS setup for this mainboard device limits
+ the choices to standard settings, i.e. io-address and IRQ
+ are related, however DMA can be 1 or 3, assume DMA_A=DMA1,
+ DMA_C=DMA3 (this is true e.g. for TYAN 1564D Tomcat IV) */
+ if(cr23*4 >=0x100) { /* if active */
+ while((superios[i].io!= 0) && (i<NR_SUPERIOS))
+ i++;
+ if(i==NR_SUPERIOS)
+ printk(KERN_INFO "Super-IO: too many chips!\n");
+ else {
+ int d;
+ switch (cr23*4) {
+ case 0x3bc:
+ superios[i].io = 0x3bc;
+ superios[i].irq = 7;
+ break;
+ case 0x378:
+ superios[i].io = 0x378;
+ superios[i].irq = 7;
+ break;
+ case 0x278:
+ superios[i].io = 0x278;
+ superios[i].irq = 5;
+ }
+ d=(cr26 &0x0f);
+ if((d==1) || (d==3))
+ superios[i].dma= d;
+ else
+ superios[i].dma= PARPORT_DMA_NONE;
+ }
+ }
+}
+
+
+static void __devinit show_parconfig_winbond(int io, int key)
+{
+ int cr30,cr60,cr61,cr70,cr74,crf0,i=0;
+ static const char *modes[] = {
+ "Standard (SPP) and Bidirectional(PS/2)", /* 0 */
+ "EPP-1.9 and SPP",
+ "ECP",
+ "ECP and EPP-1.9",
+ "Standard (SPP)",
+ "EPP-1.7 and SPP", /* 5 */
+ "undefined!",
+ "ECP and EPP-1.7" };
+ static char *irqtypes[] = { "pulsed low, high-Z", "follows nACK" };
+
+ /* The registers are called compatible-PnP because the
+ register layout is modelled after ISA-PnP, the access
+ method is just another ... */
+ outb(key,io);
+ outb(key,io);
+ outb(0x07,io); /* Register 7: Select Logical Device */
+ outb(0x01,io+1); /* LD1 is Parallel Port */
+ outb(0x30,io);
+ cr30=inb(io+1);
+ outb(0x60,io);
+ cr60=inb(io+1);
+ outb(0x61,io);
+ cr61=inb(io+1);
+ outb(0x70,io);
+ cr70=inb(io+1);
+ outb(0x74,io);
+ cr74=inb(io+1);
+ outb(0xf0,io);
+ crf0=inb(io+1);
+ outb(0xaa,io);
+
+ if (verbose_probing) {
+ printk(KERN_INFO "Winbond LPT Config: cr_30=%02x 60,61=%02x%02x "
+ "70=%02x 74=%02x, f0=%02x\n", cr30,cr60,cr61,cr70,cr74,crf0);
+ printk(KERN_INFO "Winbond LPT Config: active=%s, io=0x%02x%02x irq=%d, ",
+ (cr30 & 0x01) ? "yes":"no", cr60,cr61,cr70&0x0f );
+ if ((cr74 & 0x07) > 3)
+ printk("dma=none\n");
+ else
+ printk("dma=%d\n",cr74 & 0x07);
+ printk(KERN_INFO "Winbond LPT Config: irqtype=%s, ECP fifo threshold=%d\n",
+ irqtypes[crf0>>7], (crf0>>3)&0x0f);
+ printk(KERN_INFO "Winbond LPT Config: Port mode=%s\n", modes[crf0 & 0x07]);
+ }
+
+ if(cr30 & 0x01) { /* the settings can be interrogated later ... */
+ while((superios[i].io!= 0) && (i<NR_SUPERIOS))
+ i++;
+ if(i==NR_SUPERIOS)
+ printk(KERN_INFO "Super-IO: too many chips!\n");
+ else {
+ superios[i].io = (cr60<<8)|cr61;
+ superios[i].irq = cr70&0x0f;
+ superios[i].dma = (((cr74 & 0x07) > 3) ?
+ PARPORT_DMA_NONE : (cr74 & 0x07));
+ }
+ }
+}
+
+static void __devinit decode_winbond(int efer, int key, int devid, int devrev, int oldid)
+{
+ const char *type = "unknown";
+ int id,progif=2;
+
+ if (devid == devrev)
+ /* simple heuristics, we happened to read some
+ non-winbond register */
+ return;
+
+ id=(devid<<8) | devrev;
+
+ /* Values are from public data sheets pdf files, I can just
+ confirm 83977TF is correct :-) */
+ if (id == 0x9771) type="83977F/AF";
+ else if (id == 0x9773) type="83977TF / SMSC 97w33x/97w34x";
+ else if (id == 0x9774) type="83977ATF";
+ else if ((id & ~0x0f) == 0x5270) type="83977CTF / SMSC 97w36x";
+ else if ((id & ~0x0f) == 0x52f0) type="83977EF / SMSC 97w35x";
+ else if ((id & ~0x0f) == 0x5210) type="83627";
+ else if ((id & ~0x0f) == 0x6010) type="83697HF";
+ else if ((oldid &0x0f ) == 0x0a) { type="83877F"; progif=1;}
+ else if ((oldid &0x0f ) == 0x0b) { type="83877AF"; progif=1;}
+ else if ((oldid &0x0f ) == 0x0c) { type="83877TF"; progif=1;}
+ else if ((oldid &0x0f ) == 0x0d) { type="83877ATF"; progif=1;}
+ else progif=0;
+
+ if (verbose_probing)
+ printk(KERN_INFO "Winbond chip at EFER=0x%x key=0x%02x "
+ "devid=%02x devrev=%02x oldid=%02x type=%s\n",
+ efer, key, devid, devrev, oldid, type);
+
+ if (progif == 2)
+ show_parconfig_winbond(efer,key);
+}
+
+static void __devinit decode_smsc(int efer, int key, int devid, int devrev)
+{
+ const char *type = "unknown";
+ void (*func)(int io, int key);
+ int id;
+
+ if (devid == devrev)
+ /* simple heuristics, we happened to read some
+ non-smsc register */
+ return;
+
+ func=NULL;
+ id=(devid<<8) | devrev;
+
+ if (id==0x0302) {type="37c669"; func=show_parconfig_smsc37c669;}
+ else if (id==0x6582) type="37c665IR";
+ else if (devid==0x65) type="37c665GT";
+ else if (devid==0x66) type="37c666GT";
+
+ if (verbose_probing)
+ printk(KERN_INFO "SMSC chip at EFER=0x%x "
+ "key=0x%02x devid=%02x devrev=%02x type=%s\n",
+ efer, key, devid, devrev, type);
+
+ if (func)
+ func(efer,key);
+}
+
+
+static void __devinit winbond_check(int io, int key)
+{
+ int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
+
+ if (!request_region(io, 3, __FUNCTION__))
+ return;
+
+ /* First probe without key */
+ outb(0x20,io);
+ x_devid=inb(io+1);
+ outb(0x21,io);
+ x_devrev=inb(io+1);
+ outb(0x09,io);
+ x_oldid=inb(io+1);
+
+ outb(key,io);
+ outb(key,io); /* Write Magic Sequence to EFER, extended
+ funtion enable register */
+ outb(0x20,io); /* Write EFIR, extended function index register */
+ devid=inb(io+1); /* Read EFDR, extended function data register */
+ outb(0x21,io);
+ devrev=inb(io+1);
+ outb(0x09,io);
+ oldid=inb(io+1);
+ outb(0xaa,io); /* Magic Seal */
+
+ if ((x_devid == devid) && (x_devrev == devrev) && (x_oldid == oldid))
+ goto out; /* protection against false positives */
+
+ decode_winbond(io,key,devid,devrev,oldid);
+out:
+ release_region(io, 3);
+}
+
+static void __devinit winbond_check2(int io,int key)
+{
+ int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
+
+ if (!request_region(io, 3, __FUNCTION__))
+ return;
+
+ /* First probe without the key */
+ outb(0x20,io+2);
+ x_devid=inb(io+2);
+ outb(0x21,io+1);
+ x_devrev=inb(io+2);
+ outb(0x09,io+1);
+ x_oldid=inb(io+2);
+
+ outb(key,io); /* Write Magic Byte to EFER, extended
+ funtion enable register */
+ outb(0x20,io+2); /* Write EFIR, extended function index register */
+ devid=inb(io+2); /* Read EFDR, extended function data register */
+ outb(0x21,io+1);
+ devrev=inb(io+2);
+ outb(0x09,io+1);
+ oldid=inb(io+2);
+ outb(0xaa,io); /* Magic Seal */
+
+ if ((x_devid == devid) && (x_devrev == devrev) && (x_oldid == oldid))
+ goto out; /* protection against false positives */
+
+ decode_winbond(io,key,devid,devrev,oldid);
+out:
+ release_region(io, 3);
+}
+
+static void __devinit smsc_check(int io, int key)
+{
+ int id,rev,oldid,oldrev,x_id,x_rev,x_oldid,x_oldrev;
+
+ if (!request_region(io, 3, __FUNCTION__))
+ return;
+
+ /* First probe without the key */
+ outb(0x0d,io);
+ x_oldid=inb(io+1);
+ outb(0x0e,io);
+ x_oldrev=inb(io+1);
+ outb(0x20,io);
+ x_id=inb(io+1);
+ outb(0x21,io);
+ x_rev=inb(io+1);
+
+ outb(key,io);
+ outb(key,io); /* Write Magic Sequence to EFER, extended
+ funtion enable register */
+ outb(0x0d,io); /* Write EFIR, extended function index register */
+ oldid=inb(io+1); /* Read EFDR, extended function data register */
+ outb(0x0e,io);
+ oldrev=inb(io+1);
+ outb(0x20,io);
+ id=inb(io+1);
+ outb(0x21,io);
+ rev=inb(io+1);
+ outb(0xaa,io); /* Magic Seal */
+
+ if ((x_id == id) && (x_oldrev == oldrev) &&
+ (x_oldid == oldid) && (x_rev == rev))
+ goto out; /* protection against false positives */
+
+ decode_smsc(io,key,oldid,oldrev);
+out:
+ release_region(io, 3);
+}
+
+
+static void __devinit detect_and_report_winbond (void)
+{
+ if (verbose_probing)
+ printk(KERN_DEBUG "Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...\n");
+ winbond_check(0x3f0,0x87);
+ winbond_check(0x370,0x87);
+ winbond_check(0x2e ,0x87);
+ winbond_check(0x4e ,0x87);
+ winbond_check(0x3f0,0x86);
+ winbond_check2(0x250,0x88);
+ winbond_check2(0x250,0x89);
+}
+
+static void __devinit detect_and_report_smsc (void)
+{
+ if (verbose_probing)
+ printk(KERN_DEBUG "SMSC Super-IO detection, now testing Ports 2F0, 370 ...\n");
+ smsc_check(0x3f0,0x55);
+ smsc_check(0x370,0x55);
+ smsc_check(0x3f0,0x44);
+ smsc_check(0x370,0x44);
+}
+#endif /* CONFIG_PARPORT_PC_SUPERIO */
+
+static int __devinit get_superio_dma (struct parport *p)
+{
+ int i=0;
+ while( (superios[i].io != p->base) && (i<NR_SUPERIOS))
+ i++;
+ if (i!=NR_SUPERIOS)
+ return superios[i].dma;
+ return PARPORT_DMA_NONE;
+}
+
+static int __devinit get_superio_irq (struct parport *p)
+{
+ int i=0;
+ while( (superios[i].io != p->base) && (i<NR_SUPERIOS))
+ i++;
+ if (i!=NR_SUPERIOS)
+ return superios[i].irq;
+ return PARPORT_IRQ_NONE;
+}
+
+
+/* --- Mode detection ------------------------------------- */
+
+/*
+ * Checks for port existence, all ports support SPP MODE
+ * Returns:
+ * 0 : No parallel port at this address
+ * PARPORT_MODE_PCSPP : SPP port detected
+ * (if the user specified an ioport himself,
+ * this shall always be the case!)
+ *
+ */
+static int __devinit parport_SPP_supported(struct parport *pb)
+{
+ unsigned char r, w;
+
+ /*
+ * first clear an eventually pending EPP timeout
+ * I (sailer@ife.ee.ethz.ch) have an SMSC chipset
+ * that does not even respond to SPP cycles if an EPP
+ * timeout is pending
+ */
+ clear_epp_timeout(pb);
+
+ /* Do a simple read-write test to make sure the port exists. */
+ w = 0xc;
+ outb (w, CONTROL (pb));
+
+ /* Is there a control register that we can read from? Some
+ * ports don't allow reads, so read_control just returns a
+ * software copy. Some ports _do_ allow reads, so bypass the
+ * software copy here. In addition, some bits aren't
+ * writable. */
+ r = inb (CONTROL (pb));
+ if ((r & 0xf) == w) {
+ w = 0xe;
+ outb (w, CONTROL (pb));
+ r = inb (CONTROL (pb));
+ outb (0xc, CONTROL (pb));
+ if ((r & 0xf) == w)
+ return PARPORT_MODE_PCSPP;
+ }
+
+ if (user_specified)
+ /* That didn't work, but the user thinks there's a
+ * port here. */
+ printk (KERN_INFO "parport 0x%lx (WARNING): CTR: "
+ "wrote 0x%02x, read 0x%02x\n", pb->base, w, r);
+
+ /* Try the data register. The data lines aren't tri-stated at
+ * this stage, so we expect back what we wrote. */
+ w = 0xaa;
+ parport_pc_write_data (pb, w);
+ r = parport_pc_read_data (pb);
+ if (r == w) {
+ w = 0x55;
+ parport_pc_write_data (pb, w);
+ r = parport_pc_read_data (pb);
+ if (r == w)
+ return PARPORT_MODE_PCSPP;
+ }
+
+ if (user_specified) {
+ /* Didn't work, but the user is convinced this is the
+ * place. */
+ printk (KERN_INFO "parport 0x%lx (WARNING): DATA: "
+ "wrote 0x%02x, read 0x%02x\n", pb->base, w, r);
+ printk (KERN_INFO "parport 0x%lx: You gave this address, "
+ "but there is probably no parallel port there!\n",
+ pb->base);
+ }
+
+ /* It's possible that we can't read the control register or
+ * the data register. In that case just believe the user. */
+ if (user_specified)
+ return PARPORT_MODE_PCSPP;
+
+ return 0;
+}
+
+/* Check for ECR
+ *
+ * Old style XT ports alias io ports every 0x400, hence accessing ECR
+ * on these cards actually accesses the CTR.
+ *
+ * Modern cards don't do this but reading from ECR will return 0xff
+ * regardless of what is written here if the card does NOT support
+ * ECP.
+ *
+ * We first check to see if ECR is the same as CTR. If not, the low
+ * two bits of ECR aren't writable, so we check by writing ECR and
+ * reading it back to see if it's what we expect.
+ */
+static int __devinit parport_ECR_present(struct parport *pb)
+{
+ struct parport_pc_private *priv = pb->private_data;
+ unsigned char r = 0xc;
+
+ outb (r, CONTROL (pb));
+ if ((inb (ECONTROL (pb)) & 0x3) == (r & 0x3)) {
+ outb (r ^ 0x2, CONTROL (pb)); /* Toggle bit 1 */
+
+ r = inb (CONTROL (pb));
+ if ((inb (ECONTROL (pb)) & 0x2) == (r & 0x2))
+ goto no_reg; /* Sure that no ECR register exists */
+ }
+
+ if ((inb (ECONTROL (pb)) & 0x3 ) != 0x1)
+ goto no_reg;
+
+ ECR_WRITE (pb, 0x34);
+ if (inb (ECONTROL (pb)) != 0x35)
+ goto no_reg;
+
+ priv->ecr = 1;
+ outb (0xc, CONTROL (pb));
+
+ /* Go to mode 000 */
+ frob_set_mode (pb, ECR_SPP);
+
+ return 1;
+
+ no_reg:
+ outb (0xc, CONTROL (pb));
+ return 0;
+}
+
+#ifdef CONFIG_PARPORT_1284
+/* Detect PS/2 support.
+ *
+ * Bit 5 (0x20) sets the PS/2 data direction; setting this high
+ * allows us to read data from the data lines. In theory we would get back
+ * 0xff but any peripheral attached to the port may drag some or all of the
+ * lines down to zero. So if we get back anything that isn't the contents
+ * of the data register we deem PS/2 support to be present.
+ *
+ * Some SPP ports have "half PS/2" ability - you can't turn off the line
+ * drivers, but an external peripheral with sufficiently beefy drivers of
+ * its own can overpower them and assert its own levels onto the bus, from
+ * where they can then be read back as normal. Ports with this property
+ * and the right type of device attached are likely to fail the SPP test,
+ * (as they will appear to have stuck bits) and so the fact that they might
+ * be misdetected here is rather academic.
+ */
+
+static int __devinit parport_PS2_supported(struct parport *pb)
+{
+ int ok = 0;
+
+ clear_epp_timeout(pb);
+
+ /* try to tri-state the buffer */
+ parport_pc_data_reverse (pb);
+
+ parport_pc_write_data(pb, 0x55);
+ if (parport_pc_read_data(pb) != 0x55) ok++;
+
+ parport_pc_write_data(pb, 0xaa);
+ if (parport_pc_read_data(pb) != 0xaa) ok++;
+
+ /* cancel input mode */
+ parport_pc_data_forward (pb);
+
+ if (ok) {
+ pb->modes |= PARPORT_MODE_TRISTATE;
+ } else {
+ struct parport_pc_private *priv = pb->private_data;
+ priv->ctr_writable &= ~0x20;
+ }
+
+ return ok;
+}
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+static int __devinit parport_ECP_supported(struct parport *pb)
+{
+ int i;
+ int config, configb;
+ int pword;
+ struct parport_pc_private *priv = pb->private_data;
+ /* Translate ECP intrLine to ISA irq value */
+ static const int intrline[]= { 0, 7, 9, 10, 11, 14, 15, 5 };
+
+ /* If there is no ECR, we have no hope of supporting ECP. */
+ if (!priv->ecr)
+ return 0;
+
+ /* Find out FIFO depth */
+ ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
+ ECR_WRITE (pb, ECR_TST << 5); /* TEST FIFO */
+ for (i=0; i < 1024 && !(inb (ECONTROL (pb)) & 0x02); i++)
+ outb (0xaa, FIFO (pb));
+
+ /*
+ * Using LGS chipset it uses ECR register, but
+ * it doesn't support ECP or FIFO MODE
+ */
+ if (i == 1024) {
+ ECR_WRITE (pb, ECR_SPP << 5);
+ return 0;
+ }
+
+ priv->fifo_depth = i;
+ if (verbose_probing)
+ printk (KERN_DEBUG "0x%lx: FIFO is %d bytes\n", pb->base, i);
+
+ /* Find out writeIntrThreshold */
+ frob_econtrol (pb, 1<<2, 1<<2);
+ frob_econtrol (pb, 1<<2, 0);
+ for (i = 1; i <= priv->fifo_depth; i++) {
+ inb (FIFO (pb));
+ udelay (50);
+ if (inb (ECONTROL (pb)) & (1<<2))
+ break;
+ }
+
+ if (i <= priv->fifo_depth) {
+ if (verbose_probing)
+ printk (KERN_DEBUG "0x%lx: writeIntrThreshold is %d\n",
+ pb->base, i);
+ } else
+ /* Number of bytes we know we can write if we get an
+ interrupt. */
+ i = 0;
+
+ priv->writeIntrThreshold = i;
+
+ /* Find out readIntrThreshold */
+ frob_set_mode (pb, ECR_PS2); /* Reset FIFO and enable PS2 */
+ parport_pc_data_reverse (pb); /* Must be in PS2 mode */
+ frob_set_mode (pb, ECR_TST); /* Test FIFO */
+ frob_econtrol (pb, 1<<2, 1<<2);
+ frob_econtrol (pb, 1<<2, 0);
+ for (i = 1; i <= priv->fifo_depth; i++) {
+ outb (0xaa, FIFO (pb));
+ if (inb (ECONTROL (pb)) & (1<<2))
+ break;
+ }
+
+ if (i <= priv->fifo_depth) {
+ if (verbose_probing)
+ printk (KERN_INFO "0x%lx: readIntrThreshold is %d\n",
+ pb->base, i);
+ } else
+ /* Number of bytes we can read if we get an interrupt. */
+ i = 0;
+
+ priv->readIntrThreshold = i;
+
+ ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
+ ECR_WRITE (pb, 0xf4); /* Configuration mode */
+ config = inb (CONFIGA (pb));
+ pword = (config >> 4) & 0x7;
+ switch (pword) {
+ case 0:
+ pword = 2;
+ printk (KERN_WARNING "0x%lx: Unsupported pword size!\n",
+ pb->base);
+ break;
+ case 2:
+ pword = 4;
+ printk (KERN_WARNING "0x%lx: Unsupported pword size!\n",
+ pb->base);
+ break;
+ default:
+ printk (KERN_WARNING "0x%lx: Unknown implementation ID\n",
+ pb->base);
+ /* Assume 1 */
+ case 1:
+ pword = 1;
+ }
+ priv->pword = pword;
+
+ if (verbose_probing) {
+ printk (KERN_DEBUG "0x%lx: PWord is %d bits\n", pb->base, 8 * pword);
+
+ printk (KERN_DEBUG "0x%lx: Interrupts are ISA-%s\n", pb->base,
+ config & 0x80 ? "Level" : "Pulses");
+
+ configb = inb (CONFIGB (pb));
+ printk (KERN_DEBUG "0x%lx: ECP port cfgA=0x%02x cfgB=0x%02x\n",
+ pb->base, config, configb);
+ printk (KERN_DEBUG "0x%lx: ECP settings irq=", pb->base);
+ if ((configb >>3) & 0x07)
+ printk("%d",intrline[(configb >>3) & 0x07]);
+ else
+ printk("<none or set by other means>");
+ printk (" dma=");
+ if( (configb & 0x03 ) == 0x00)
+ printk("<none or set by other means>\n");
+ else
+ printk("%d\n",configb & 0x07);
+ }
+
+ /* Go back to mode 000 */
+ frob_set_mode (pb, ECR_SPP);
+
+ return 1;
+}
+#endif
+
+static int __devinit parport_ECPPS2_supported(struct parport *pb)
+{
+ const struct parport_pc_private *priv = pb->private_data;
+ int result;
+ unsigned char oecr;
+
+ if (!priv->ecr)
+ return 0;
+
+ oecr = inb (ECONTROL (pb));
+ ECR_WRITE (pb, ECR_PS2 << 5);
+ result = parport_PS2_supported(pb);
+ ECR_WRITE (pb, oecr);
+ return result;
+}
+
+/* EPP mode detection */
+
+static int __devinit parport_EPP_supported(struct parport *pb)
+{
+ const struct parport_pc_private *priv = pb->private_data;
+
+ /*
+ * Theory:
+ * Bit 0 of STR is the EPP timeout bit, this bit is 0
+ * when EPP is possible and is set high when an EPP timeout
+ * occurs (EPP uses the HALT line to stop the CPU while it does
+ * the byte transfer, an EPP timeout occurs if the attached
+ * device fails to respond after 10 micro seconds).
+ *
+ * This bit is cleared by either reading it (National Semi)
+ * or writing a 1 to the bit (SMC, UMC, WinBond), others ???
+ * This bit is always high in non EPP modes.
+ */
+
+ /* If EPP timeout bit clear then EPP available */
+ if (!clear_epp_timeout(pb)) {
+ return 0; /* No way to clear timeout */
+ }
+
+ /* Check for Intel bug. */
+ if (priv->ecr) {
+ unsigned char i;
+ for (i = 0x00; i < 0x80; i += 0x20) {
+ ECR_WRITE (pb, i);
+ if (clear_epp_timeout (pb)) {
+ /* Phony EPP in ECP. */
+ return 0;
+ }
+ }
+ }
+
+ pb->modes |= PARPORT_MODE_EPP;
+
+ /* Set up access functions to use EPP hardware. */
+ pb->ops->epp_read_data = parport_pc_epp_read_data;
+ pb->ops->epp_write_data = parport_pc_epp_write_data;
+ pb->ops->epp_read_addr = parport_pc_epp_read_addr;
+ pb->ops->epp_write_addr = parport_pc_epp_write_addr;
+
+ return 1;
+}
+
+static int __devinit parport_ECPEPP_supported(struct parport *pb)
+{
+ struct parport_pc_private *priv = pb->private_data;
+ int result;
+ unsigned char oecr;
+
+ if (!priv->ecr) {
+ return 0;
+ }
+
+ oecr = inb (ECONTROL (pb));
+ /* Search for SMC style EPP+ECP mode */
+ ECR_WRITE (pb, 0x80);
+ outb (0x04, CONTROL (pb));
+ result = parport_EPP_supported(pb);
+
+ ECR_WRITE (pb, oecr);
+
+ if (result) {
+ /* Set up access functions to use ECP+EPP hardware. */
+ pb->ops->epp_read_data = parport_pc_ecpepp_read_data;
+ pb->ops->epp_write_data = parport_pc_ecpepp_write_data;
+ pb->ops->epp_read_addr = parport_pc_ecpepp_read_addr;
+ pb->ops->epp_write_addr = parport_pc_ecpepp_write_addr;
+ }
+
+ return result;
+}
+
+#else /* No IEEE 1284 support */
+
+/* Don't bother probing for modes we know we won't use. */
+static int __devinit parport_PS2_supported(struct parport *pb) { return 0; }
+#ifdef CONFIG_PARPORT_PC_FIFO
+static int __devinit parport_ECP_supported(struct parport *pb) { return 0; }
+#endif
+static int __devinit parport_EPP_supported(struct parport *pb) { return 0; }
+static int __devinit parport_ECPEPP_supported(struct parport *pb){return 0;}
+static int __devinit parport_ECPPS2_supported(struct parport *pb){return 0;}
+
+#endif /* No IEEE 1284 support */
+
+/* --- IRQ detection -------------------------------------- */
+
+/* Only if supports ECP mode */
+static int __devinit programmable_irq_support(struct parport *pb)
+{
+ int irq, intrLine;
+ unsigned char oecr = inb (ECONTROL (pb));
+ static const int lookup[8] = {
+ PARPORT_IRQ_NONE, 7, 9, 10, 11, 14, 15, 5
+ };
+
+ ECR_WRITE (pb, ECR_CNF << 5); /* Configuration MODE */
+
+ intrLine = (inb (CONFIGB (pb)) >> 3) & 0x07;
+ irq = lookup[intrLine];
+
+ ECR_WRITE (pb, oecr);
+ return irq;
+}
+
+static int __devinit irq_probe_ECP(struct parport *pb)
+{
+ int i;
+ unsigned long irqs;
+
+ irqs = probe_irq_on();
+
+ ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
+ ECR_WRITE (pb, (ECR_TST << 5) | 0x04);
+ ECR_WRITE (pb, ECR_TST << 5);
+
+ /* If Full FIFO sure that writeIntrThreshold is generated */
+ for (i=0; i < 1024 && !(inb (ECONTROL (pb)) & 0x02) ; i++)
+ outb (0xaa, FIFO (pb));
+
+ pb->irq = probe_irq_off(irqs);
+ ECR_WRITE (pb, ECR_SPP << 5);
+
+ if (pb->irq <= 0)
+ pb->irq = PARPORT_IRQ_NONE;
+
+ return pb->irq;
+}
+
+/*
+ * This detection seems that only works in National Semiconductors
+ * This doesn't work in SMC, LGS, and Winbond
+ */
+static int __devinit irq_probe_EPP(struct parport *pb)
+{
+#ifndef ADVANCED_DETECT
+ return PARPORT_IRQ_NONE;
+#else
+ int irqs;
+ unsigned char oecr;
+
+ if (pb->modes & PARPORT_MODE_PCECR)
+ oecr = inb (ECONTROL (pb));
+
+ irqs = probe_irq_on();
+
+ if (pb->modes & PARPORT_MODE_PCECR)
+ frob_econtrol (pb, 0x10, 0x10);
+
+ clear_epp_timeout(pb);
+ parport_pc_frob_control (pb, 0x20, 0x20);
+ parport_pc_frob_control (pb, 0x10, 0x10);
+ clear_epp_timeout(pb);
+
+ /* Device isn't expecting an EPP read
+ * and generates an IRQ.
+ */
+ parport_pc_read_epp(pb);
+ udelay(20);
+
+ pb->irq = probe_irq_off (irqs);
+ if (pb->modes & PARPORT_MODE_PCECR)
+ ECR_WRITE (pb, oecr);
+ parport_pc_write_control(pb, 0xc);
+
+ if (pb->irq <= 0)
+ pb->irq = PARPORT_IRQ_NONE;
+
+ return pb->irq;
+#endif /* Advanced detection */
+}
+
+static int __devinit irq_probe_SPP(struct parport *pb)
+{
+ /* Don't even try to do this. */
+ return PARPORT_IRQ_NONE;
+}
+
+/* We will attempt to share interrupt requests since other devices
+ * such as sound cards and network cards seem to like using the
+ * printer IRQs.
+ *
+ * When ECP is available we can autoprobe for IRQs.
+ * NOTE: If we can autoprobe it, we can register the IRQ.
+ */
+static int __devinit parport_irq_probe(struct parport *pb)
+{
+ struct parport_pc_private *priv = pb->private_data;
+
+ if (priv->ecr) {
+ pb->irq = programmable_irq_support(pb);
+
+ if (pb->irq == PARPORT_IRQ_NONE)
+ pb->irq = irq_probe_ECP(pb);
+ }
+
+ if ((pb->irq == PARPORT_IRQ_NONE) && priv->ecr &&
+ (pb->modes & PARPORT_MODE_EPP))
+ pb->irq = irq_probe_EPP(pb);
+
+ clear_epp_timeout(pb);
+
+ if (pb->irq == PARPORT_IRQ_NONE && (pb->modes & PARPORT_MODE_EPP))
+ pb->irq = irq_probe_EPP(pb);
+
+ clear_epp_timeout(pb);
+
+ if (pb->irq == PARPORT_IRQ_NONE)
+ pb->irq = irq_probe_SPP(pb);
+
+ if (pb->irq == PARPORT_IRQ_NONE)
+ pb->irq = get_superio_irq(pb);
+
+ return pb->irq;
+}
+
+/* --- DMA detection -------------------------------------- */
+
+/* Only if chipset conforms to ECP ISA Interface Standard */
+static int __devinit programmable_dma_support (struct parport *p)
+{
+ unsigned char oecr = inb (ECONTROL (p));
+ int dma;
+
+ frob_set_mode (p, ECR_CNF);
+
+ dma = inb (CONFIGB(p)) & 0x07;
+ /* 000: Indicates jumpered 8-bit DMA if read-only.
+ 100: Indicates jumpered 16-bit DMA if read-only. */
+ if ((dma & 0x03) == 0)
+ dma = PARPORT_DMA_NONE;
+
+ ECR_WRITE (p, oecr);
+ return dma;
+}
+
+static int __devinit parport_dma_probe (struct parport *p)
+{
+ const struct parport_pc_private *priv = p->private_data;
+ if (priv->ecr)
+ p->dma = programmable_dma_support(p); /* ask ECP chipset first */
+ if (p->dma == PARPORT_DMA_NONE) {
+ /* ask known Super-IO chips proper, although these
+ claim ECP compatible, some don't report their DMA
+ conforming to ECP standards */
+ p->dma = get_superio_dma(p);
+ }
+
+ return p->dma;
+}
+
+/* --- Initialisation code -------------------------------- */
+
+static LIST_HEAD(ports_list);
+static DEFINE_SPINLOCK(ports_lock);
+
+struct parport *parport_pc_probe_port (unsigned long int base,
+ unsigned long int base_hi,
+ int irq, int dma,
+ struct pci_dev *dev)
+{
+ struct parport_pc_private *priv;
+ struct parport_operations *ops;
+ struct parport *p;
+ int probedirq = PARPORT_IRQ_NONE;
+ struct resource *base_res;
+ struct resource *ECR_res = NULL;
+ struct resource *EPP_res = NULL;
+
+ ops = kmalloc(sizeof (struct parport_operations), GFP_KERNEL);
+ if (!ops)
+ goto out1;
+
+ priv = kmalloc (sizeof (struct parport_pc_private), GFP_KERNEL);
+ if (!priv)
+ goto out2;
+
+ /* a misnomer, actually - it's allocate and reserve parport number */
+ p = parport_register_port(base, irq, dma, ops);
+ if (!p)
+ goto out3;
+
+ base_res = request_region(base, 3, p->name);
+ if (!base_res)
+ goto out4;
+
+ memcpy(ops, &parport_pc_ops, sizeof (struct parport_operations));
+ priv->ctr = 0xc;
+ priv->ctr_writable = ~0x10;
+ priv->ecr = 0;
+ priv->fifo_depth = 0;
+ priv->dma_buf = NULL;
+ priv->dma_handle = 0;
+ priv->dev = dev;
+ INIT_LIST_HEAD(&priv->list);
+ priv->port = p;
+ p->base_hi = base_hi;
+ p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
+ p->private_data = priv;
+
+ if (base_hi) {
+ ECR_res = request_region(base_hi, 3, p->name);
+ if (ECR_res)
+ parport_ECR_present(p);
+ }
+
+ if (base != 0x3bc) {
+ EPP_res = request_region(base+0x3, 5, p->name);
+ if (EPP_res)
+ if (!parport_EPP_supported(p))
+ parport_ECPEPP_supported(p);
+ }
+ if (!parport_SPP_supported (p))
+ /* No port. */
+ goto out5;
+ if (priv->ecr)
+ parport_ECPPS2_supported(p);
+ else
+ parport_PS2_supported(p);
+
+ p->size = (p->modes & PARPORT_MODE_EPP)?8:3;
+
+ printk(KERN_INFO "%s: PC-style at 0x%lx", p->name, p->base);
+ if (p->base_hi && priv->ecr)
+ printk(" (0x%lx)", p->base_hi);
+ if (p->irq == PARPORT_IRQ_AUTO) {
+ p->irq = PARPORT_IRQ_NONE;
+ parport_irq_probe(p);
+ } else if (p->irq == PARPORT_IRQ_PROBEONLY) {
+ p->irq = PARPORT_IRQ_NONE;
+ parport_irq_probe(p);
+ probedirq = p->irq;
+ p->irq = PARPORT_IRQ_NONE;
+ }
+ if (p->irq != PARPORT_IRQ_NONE) {
+ printk(", irq %d", p->irq);
+ priv->ctr_writable |= 0x10;
+
+ if (p->dma == PARPORT_DMA_AUTO) {
+ p->dma = PARPORT_DMA_NONE;
+ parport_dma_probe(p);
+ }
+ }
+ if (p->dma == PARPORT_DMA_AUTO) /* To use DMA, giving the irq
+ is mandatory (see above) */
+ p->dma = PARPORT_DMA_NONE;
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+ if (parport_ECP_supported(p) &&
+ p->dma != PARPORT_DMA_NOFIFO &&
+ priv->fifo_depth > 0 && p->irq != PARPORT_IRQ_NONE) {
+ p->modes |= PARPORT_MODE_ECP | PARPORT_MODE_COMPAT;
+ p->ops->compat_write_data = parport_pc_compat_write_block_pio;
+#ifdef CONFIG_PARPORT_1284
+ p->ops->ecp_write_data = parport_pc_ecp_write_block_pio;
+ /* currently broken, but working on it.. (FB) */
+ /* p->ops->ecp_read_data = parport_pc_ecp_read_block_pio; */
+#endif /* IEEE 1284 support */
+ if (p->dma != PARPORT_DMA_NONE) {
+ printk(", dma %d", p->dma);
+ p->modes |= PARPORT_MODE_DMA;
+ }
+ else printk(", using FIFO");
+ }
+ else
+ /* We can't use the DMA channel after all. */
+ p->dma = PARPORT_DMA_NONE;
+#endif /* Allowed to use FIFO/DMA */
+
+ printk(" [");
+#define printmode(x) {if(p->modes&PARPORT_MODE_##x){printk("%s%s",f?",":"",#x);f++;}}
+ {
+ int f = 0;
+ printmode(PCSPP);
+ printmode(TRISTATE);
+ printmode(COMPAT)
+ printmode(EPP);
+ printmode(ECP);
+ printmode(DMA);
+ }
+#undef printmode
+#ifndef CONFIG_PARPORT_1284
+ printk ("(,...)");
+#endif /* CONFIG_PARPORT_1284 */
+ printk("]\n");
+ if (probedirq != PARPORT_IRQ_NONE)
+ printk(KERN_INFO "%s: irq %d detected\n", p->name, probedirq);
+
+ /* If No ECP release the ports grabbed above. */
+ if (ECR_res && (p->modes & PARPORT_MODE_ECP) == 0) {
+ release_region(base_hi, 3);
+ ECR_res = NULL;
+ }
+ /* Likewise for EEP ports */
+ if (EPP_res && (p->modes & PARPORT_MODE_EPP) == 0) {
+ release_region(base+3, 5);
+ EPP_res = NULL;
+ }
+ if (p->irq != PARPORT_IRQ_NONE) {
+ if (request_irq (p->irq, parport_pc_interrupt,
+ 0, p->name, p)) {
+ printk (KERN_WARNING "%s: irq %d in use, "
+ "resorting to polled operation\n",
+ p->name, p->irq);
+ p->irq = PARPORT_IRQ_NONE;
+ p->dma = PARPORT_DMA_NONE;
+ }
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+ if (p->dma != PARPORT_DMA_NONE) {
+ if (request_dma (p->dma, p->name)) {
+ printk (KERN_WARNING "%s: dma %d in use, "
+ "resorting to PIO operation\n",
+ p->name, p->dma);
+ p->dma = PARPORT_DMA_NONE;
+ } else {
+ priv->dma_buf =
+ pci_alloc_consistent(priv->dev,
+ PAGE_SIZE,
+ &priv->dma_handle);
+ if (! priv->dma_buf) {
+ printk (KERN_WARNING "%s: "
+ "cannot get buffer for DMA, "
+ "resorting to PIO operation\n",
+ p->name);
+ free_dma(p->dma);
+ p->dma = PARPORT_DMA_NONE;
+ }
+ }
+ }
+#endif /* CONFIG_PARPORT_PC_FIFO */
+ }
+
+ /* Done probing. Now put the port into a sensible start-up state. */
+ if (priv->ecr)
+ /*
+ * Put the ECP detected port in PS2 mode.
+ * Do this also for ports that have ECR but don't do ECP.
+ */
+ ECR_WRITE (p, 0x34);
+
+ parport_pc_write_data(p, 0);
+ parport_pc_data_forward (p);
+
+ /* Now that we've told the sharing engine about the port, and
+ found out its characteristics, let the high-level drivers
+ know about it. */
+ spin_lock(&ports_lock);
+ list_add(&priv->list, &ports_list);
+ spin_unlock(&ports_lock);
+ parport_announce_port (p);
+
+ return p;
+
+out5:
+ if (ECR_res)
+ release_region(base_hi, 3);
+ if (EPP_res)
+ release_region(base+0x3, 5);
+ release_region(base, 3);
+out4:
+ parport_put_port(p);
+out3:
+ kfree (priv);
+out2:
+ kfree (ops);
+out1:
+ return NULL;
+}
+
+EXPORT_SYMBOL (parport_pc_probe_port);
+
+void parport_pc_unregister_port (struct parport *p)
+{
+ struct parport_pc_private *priv = p->private_data;
+ struct parport_operations *ops = p->ops;
+
+ parport_remove_port(p);
+ spin_lock(&ports_lock);
+ list_del_init(&priv->list);
+ spin_unlock(&ports_lock);
+ if (p->dma != PARPORT_DMA_NONE)
+ free_dma(p->dma);
+ if (p->irq != PARPORT_IRQ_NONE)
+ free_irq(p->irq, p);
+ release_region(p->base, 3);
+ if (p->size > 3)
+ release_region(p->base + 3, p->size - 3);
+ if (p->modes & PARPORT_MODE_ECP)
+ release_region(p->base_hi, 3);
+#ifdef CONFIG_PARPORT_PC_FIFO
+ if (priv->dma_buf)
+ pci_free_consistent(priv->dev, PAGE_SIZE,
+ priv->dma_buf,
+ priv->dma_handle);
+#endif /* CONFIG_PARPORT_PC_FIFO */
+ kfree (p->private_data);
+ parport_put_port(p);
+ kfree (ops); /* hope no-one cached it */
+}
+
+EXPORT_SYMBOL (parport_pc_unregister_port);
+
+#ifdef CONFIG_PCI
+
+/* ITE support maintained by Rich Liu <richliu@poorman.org> */
+static int __devinit sio_ite_8872_probe (struct pci_dev *pdev, int autoirq,
+ int autodma, struct parport_pc_via_data *via)
+{
+ short inta_addr[6] = { 0x2A0, 0x2C0, 0x220, 0x240, 0x1E0 };
+ struct resource *base_res;
+ u32 ite8872set;
+ u32 ite8872_lpt, ite8872_lpthi;
+ u8 ite8872_irq, type;
+ char *fake_name = "parport probe";
+ int irq;
+ int i;
+
+ DPRINTK (KERN_DEBUG "sio_ite_8872_probe()\n");
+
+ // make sure which one chip
+ for(i = 0; i < 5; i++) {
+ base_res = request_region(inta_addr[i], 0x8, fake_name);
+ if (base_res) {
+ int test;
+ pci_write_config_dword (pdev, 0x60,
+ 0xe7000000 | inta_addr[i]);
+ pci_write_config_dword (pdev, 0x78,
+ 0x00000000 | inta_addr[i]);
+ test = inb (inta_addr[i]);
+ if (test != 0xff) break;
+ release_region(inta_addr[i], 0x8);
+ }
+ }
+ if(i >= 5) {
+ printk (KERN_INFO "parport_pc: cannot find ITE8872 INTA\n");
+ return 0;
+ }
+
+ type = inb (inta_addr[i] + 0x18);
+ type &= 0x0f;
+
+ switch (type) {
+ case 0x2:
+ printk (KERN_INFO "parport_pc: ITE8871 found (1P)\n");
+ ite8872set = 0x64200000;
+ break;
+ case 0xa:
+ printk (KERN_INFO "parport_pc: ITE8875 found (1P)\n");
+ ite8872set = 0x64200000;
+ break;
+ case 0xe:
+ printk (KERN_INFO "parport_pc: ITE8872 found (2S1P)\n");
+ ite8872set = 0x64e00000;
+ break;
+ case 0x6:
+ printk (KERN_INFO "parport_pc: ITE8873 found (1S)\n");
+ return 0;
+ case 0x8:
+ DPRINTK (KERN_DEBUG "parport_pc: ITE8874 found (2S)\n");
+ return 0;
+ default:
+ printk (KERN_INFO "parport_pc: unknown ITE887x\n");
+ printk (KERN_INFO "parport_pc: please mail 'lspci -nvv' "
+ "output to Rich.Liu@ite.com.tw\n");
+ return 0;
+ }
+
+ pci_read_config_byte (pdev, 0x3c, &ite8872_irq);
+ pci_read_config_dword (pdev, 0x1c, &ite8872_lpt);
+ ite8872_lpt &= 0x0000ff00;
+ pci_read_config_dword (pdev, 0x20, &ite8872_lpthi);
+ ite8872_lpthi &= 0x0000ff00;
+ pci_write_config_dword (pdev, 0x6c, 0xe3000000 | ite8872_lpt);
+ pci_write_config_dword (pdev, 0x70, 0xe3000000 | ite8872_lpthi);
+ pci_write_config_dword (pdev, 0x80, (ite8872_lpthi<<16) | ite8872_lpt);
+ // SET SPP&EPP , Parallel Port NO DMA , Enable All Function
+ // SET Parallel IRQ
+ pci_write_config_dword (pdev, 0x9c,
+ ite8872set | (ite8872_irq * 0x11111));
+
+ DPRINTK (KERN_DEBUG "ITE887x: The IRQ is %d.\n", ite8872_irq);
+ DPRINTK (KERN_DEBUG "ITE887x: The PARALLEL I/O port is 0x%x.\n",
+ ite8872_lpt);
+ DPRINTK (KERN_DEBUG "ITE887x: The PARALLEL I/O porthi is 0x%x.\n",
+ ite8872_lpthi);
+
+ /* Let the user (or defaults) steer us away from interrupts */
+ irq = ite8872_irq;
+ if (autoirq != PARPORT_IRQ_AUTO)
+ irq = PARPORT_IRQ_NONE;
+
+ /*
+ * Release the resource so that parport_pc_probe_port can get it.
+ */
+ release_resource(base_res);
+ if (parport_pc_probe_port (ite8872_lpt, ite8872_lpthi,
+ irq, PARPORT_DMA_NONE, NULL)) {
+ printk (KERN_INFO
+ "parport_pc: ITE 8872 parallel port: io=0x%X",
+ ite8872_lpt);
+ if (irq != PARPORT_IRQ_NONE)
+ printk (", irq=%d", irq);
+ printk ("\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/* VIA 8231 support by Pavel Fedin <sonic_amiga@rambler.ru>
+ based on VIA 686a support code by Jeff Garzik <jgarzik@pobox.com> */
+static int __devinitdata parport_init_mode = 0;
+
+/* Data for two known VIA chips */
+static struct parport_pc_via_data via_686a_data __devinitdata = {
+ 0x51,
+ 0x50,
+ 0x85,
+ 0x02,
+ 0xE2,
+ 0xF0,
+ 0xE6
+};
+static struct parport_pc_via_data via_8231_data __devinitdata = {
+ 0x45,
+ 0x44,
+ 0x50,
+ 0x04,
+ 0xF2,
+ 0xFA,
+ 0xF6
+};
+
+static int __devinit sio_via_probe (struct pci_dev *pdev, int autoirq,
+ int autodma, struct parport_pc_via_data *via)
+{
+ u8 tmp, tmp2, siofunc;
+ u8 ppcontrol = 0;
+ int dma, irq;
+ unsigned port1, port2;
+ unsigned have_epp = 0;
+
+ printk(KERN_DEBUG "parport_pc: VIA 686A/8231 detected\n");
+
+ switch(parport_init_mode)
+ {
+ case 1:
+ printk(KERN_DEBUG "parport_pc: setting SPP mode\n");
+ siofunc = VIA_FUNCTION_PARPORT_SPP;
+ break;
+ case 2:
+ printk(KERN_DEBUG "parport_pc: setting PS/2 mode\n");
+ siofunc = VIA_FUNCTION_PARPORT_SPP;
+ ppcontrol = VIA_PARPORT_BIDIR;
+ break;
+ case 3:
+ printk(KERN_DEBUG "parport_pc: setting EPP mode\n");
+ siofunc = VIA_FUNCTION_PARPORT_EPP;
+ ppcontrol = VIA_PARPORT_BIDIR;
+ have_epp = 1;
+ break;
+ case 4:
+ printk(KERN_DEBUG "parport_pc: setting ECP mode\n");
+ siofunc = VIA_FUNCTION_PARPORT_ECP;
+ ppcontrol = VIA_PARPORT_BIDIR;
+ break;
+ case 5:
+ printk(KERN_DEBUG "parport_pc: setting EPP+ECP mode\n");
+ siofunc = VIA_FUNCTION_PARPORT_ECP;
+ ppcontrol = VIA_PARPORT_BIDIR|VIA_PARPORT_ECPEPP;
+ have_epp = 1;
+ break;
+ default:
+ printk(KERN_DEBUG "parport_pc: probing current configuration\n");
+ siofunc = VIA_FUNCTION_PROBE;
+ break;
+ }
+ /*
+ * unlock super i/o configuration
+ */
+ pci_read_config_byte(pdev, via->via_pci_superio_config_reg, &tmp);
+ tmp |= via->via_pci_superio_config_data;
+ pci_write_config_byte(pdev, via->via_pci_superio_config_reg, tmp);
+
+ /* Bits 1-0: Parallel Port Mode / Enable */
+ outb(via->viacfg_function, VIA_CONFIG_INDEX);
+ tmp = inb (VIA_CONFIG_DATA);
+ /* Bit 5: EPP+ECP enable; bit 7: PS/2 bidirectional port enable */
+ outb(via->viacfg_parport_control, VIA_CONFIG_INDEX);
+ tmp2 = inb (VIA_CONFIG_DATA);
+ if (siofunc == VIA_FUNCTION_PROBE)
+ {
+ siofunc = tmp & VIA_FUNCTION_PARPORT_DISABLE;
+ ppcontrol = tmp2;
+ }
+ else
+ {
+ tmp &= ~VIA_FUNCTION_PARPORT_DISABLE;
+ tmp |= siofunc;
+ outb(via->viacfg_function, VIA_CONFIG_INDEX);
+ outb(tmp, VIA_CONFIG_DATA);
+ tmp2 &= ~(VIA_PARPORT_BIDIR|VIA_PARPORT_ECPEPP);
+ tmp2 |= ppcontrol;
+ outb(via->viacfg_parport_control, VIA_CONFIG_INDEX);
+ outb(tmp2, VIA_CONFIG_DATA);
+ }
+
+ /* Parallel Port I/O Base Address, bits 9-2 */
+ outb(via->viacfg_parport_base, VIA_CONFIG_INDEX);
+ port1 = inb(VIA_CONFIG_DATA) << 2;
+
+ printk (KERN_DEBUG "parport_pc: Current parallel port base: 0x%X\n",port1);
+ if ((port1 == 0x3BC) && have_epp)
+ {
+ outb(via->viacfg_parport_base, VIA_CONFIG_INDEX);
+ outb((0x378 >> 2), VIA_CONFIG_DATA);
+ printk(KERN_DEBUG "parport_pc: Parallel port base changed to 0x378\n");
+ port1 = 0x378;
+ }
+
+ /*
+ * lock super i/o configuration
+ */
+ pci_read_config_byte(pdev, via->via_pci_superio_config_reg, &tmp);
+ tmp &= ~via->via_pci_superio_config_data;
+ pci_write_config_byte(pdev, via->via_pci_superio_config_reg, tmp);
+
+ if (siofunc == VIA_FUNCTION_PARPORT_DISABLE) {
+ printk(KERN_INFO "parport_pc: VIA parallel port disabled in BIOS\n");
+ return 0;
+ }
+
+ /* Bits 7-4: PnP Routing for Parallel Port IRQ */
+ pci_read_config_byte(pdev, via->via_pci_parport_irq_reg, &tmp);
+ irq = ((tmp & VIA_IRQCONTROL_PARALLEL) >> 4);
+
+ if (siofunc == VIA_FUNCTION_PARPORT_ECP)
+ {
+ /* Bits 3-2: PnP Routing for Parallel Port DMA */
+ pci_read_config_byte(pdev, via->via_pci_parport_dma_reg, &tmp);
+ dma = ((tmp & VIA_DMACONTROL_PARALLEL) >> 2);
+ }
+ else
+ /* if ECP not enabled, DMA is not enabled, assumed bogus 'dma' value */
+ dma = PARPORT_DMA_NONE;
+
+ /* Let the user (or defaults) steer us away from interrupts and DMA */
+ if (autoirq == PARPORT_IRQ_NONE) {
+ irq = PARPORT_IRQ_NONE;
+ dma = PARPORT_DMA_NONE;
+ }
+ if (autodma == PARPORT_DMA_NONE)
+ dma = PARPORT_DMA_NONE;
+
+ switch (port1) {
+ case 0x3bc: port2 = 0x7bc; break;
+ case 0x378: port2 = 0x778; break;
+ case 0x278: port2 = 0x678; break;
+ default:
+ printk(KERN_INFO "parport_pc: Weird VIA parport base 0x%X, ignoring\n",
+ port1);
+ return 0;
+ }
+
+ /* filter bogus IRQs */
+ switch (irq) {
+ case 0:
+ case 2:
+ case 8:
+ case 13:
+ irq = PARPORT_IRQ_NONE;
+ break;
+
+ default: /* do nothing */
+ break;
+ }
+
+ /* finally, do the probe with values obtained */
+ if (parport_pc_probe_port (port1, port2, irq, dma, NULL)) {
+ printk (KERN_INFO
+ "parport_pc: VIA parallel port: io=0x%X", port1);
+ if (irq != PARPORT_IRQ_NONE)
+ printk (", irq=%d", irq);
+ if (dma != PARPORT_DMA_NONE)
+ printk (", dma=%d", dma);
+ printk ("\n");
+ return 1;
+ }
+
+ printk(KERN_WARNING "parport_pc: Strange, can't probe VIA parallel port: io=0x%X, irq=%d, dma=%d\n",
+ port1, irq, dma);
+ return 0;
+}
+
+
+enum parport_pc_sio_types {
+ sio_via_686a = 0, /* Via VT82C686A motherboard Super I/O */
+ sio_via_8231, /* Via VT8231 south bridge integrated Super IO */
+ sio_ite_8872,
+ last_sio
+};
+
+/* each element directly indexed from enum list, above */
+static struct parport_pc_superio {
+ int (*probe) (struct pci_dev *pdev, int autoirq, int autodma, struct parport_pc_via_data *via);
+ struct parport_pc_via_data *via;
+} parport_pc_superio_info[] __devinitdata = {
+ { sio_via_probe, &via_686a_data, },
+ { sio_via_probe, &via_8231_data, },
+ { sio_ite_8872_probe, NULL, },
+};
+
+enum parport_pc_pci_cards {
+ siig_1p_10x = last_sio,
+ siig_2p_10x,
+ siig_1p_20x,
+ siig_2p_20x,
+ lava_parallel,
+ lava_parallel_dual_a,
+ lava_parallel_dual_b,
+ boca_ioppar,
+ plx_9050,
+ timedia_4078a,
+ timedia_4079h,
+ timedia_4085h,
+ timedia_4088a,
+ timedia_4089a,
+ timedia_4095a,
+ timedia_4096a,
+ timedia_4078u,
+ timedia_4079a,
+ timedia_4085u,
+ timedia_4079r,
+ timedia_4079s,
+ timedia_4079d,
+ timedia_4079e,
+ timedia_4079f,
+ timedia_9079a,
+ timedia_9079b,
+ timedia_9079c,
+ timedia_4006a,
+ timedia_4014,
+ timedia_4008a,
+ timedia_4018,
+ timedia_9018a,
+ syba_2p_epp,
+ syba_1p_ecp,
+ titan_010l,
+ titan_1284p2,
+ avlab_1p,
+ avlab_2p,
+ oxsemi_954,
+ oxsemi_840,
+ aks_0100,
+ mobility_pp,
+ netmos_9705,
+ netmos_9715,
+ netmos_9755,
+ netmos_9805,
+ netmos_9815,
+ netmos_9855,
+};
+
+
+/* each element directly indexed from enum list, above
+ * (but offset by last_sio) */
+static struct parport_pc_pci {
+ int numports;
+ struct { /* BAR (base address registers) numbers in the config
+ space header */
+ int lo;
+ int hi; /* -1 if not there, >6 for offset-method (max
+ BAR is 6) */
+ } addr[4];
+
+ /* If set, this is called immediately after pci_enable_device.
+ * If it returns non-zero, no probing will take place and the
+ * ports will not be used. */
+ int (*preinit_hook) (struct pci_dev *pdev, int autoirq, int autodma);
+
+ /* If set, this is called after probing for ports. If 'failed'
+ * is non-zero we couldn't use any of the ports. */
+ void (*postinit_hook) (struct pci_dev *pdev, int failed);
+} cards[] __devinitdata = {
+ /* siig_1p_10x */ { 1, { { 2, 3 }, } },
+ /* siig_2p_10x */ { 2, { { 2, 3 }, { 4, 5 }, } },
+ /* siig_1p_20x */ { 1, { { 0, 1 }, } },
+ /* siig_2p_20x */ { 2, { { 0, 1 }, { 2, 3 }, } },
+ /* lava_parallel */ { 1, { { 0, -1 }, } },
+ /* lava_parallel_dual_a */ { 1, { { 0, -1 }, } },
+ /* lava_parallel_dual_b */ { 1, { { 0, -1 }, } },
+ /* boca_ioppar */ { 1, { { 0, -1 }, } },
+ /* plx_9050 */ { 2, { { 4, -1 }, { 5, -1 }, } },
+ /* timedia_4078a */ { 1, { { 2, -1 }, } },
+ /* timedia_4079h */ { 1, { { 2, 3 }, } },
+ /* timedia_4085h */ { 2, { { 2, -1 }, { 4, -1 }, } },
+ /* timedia_4088a */ { 2, { { 2, 3 }, { 4, 5 }, } },
+ /* timedia_4089a */ { 2, { { 2, 3 }, { 4, 5 }, } },
+ /* timedia_4095a */ { 2, { { 2, 3 }, { 4, 5 }, } },
+ /* timedia_4096a */ { 2, { { 2, 3 }, { 4, 5 }, } },
+ /* timedia_4078u */ { 1, { { 2, -1 }, } },
+ /* timedia_4079a */ { 1, { { 2, 3 }, } },
+ /* timedia_4085u */ { 2, { { 2, -1 }, { 4, -1 }, } },
+ /* timedia_4079r */ { 1, { { 2, 3 }, } },
+ /* timedia_4079s */ { 1, { { 2, 3 }, } },
+ /* timedia_4079d */ { 1, { { 2, 3 }, } },
+ /* timedia_4079e */ { 1, { { 2, 3 }, } },
+ /* timedia_4079f */ { 1, { { 2, 3 }, } },
+ /* timedia_9079a */ { 1, { { 2, 3 }, } },
+ /* timedia_9079b */ { 1, { { 2, 3 }, } },
+ /* timedia_9079c */ { 1, { { 2, 3 }, } },
+ /* timedia_4006a */ { 1, { { 0, -1 }, } },
+ /* timedia_4014 */ { 2, { { 0, -1 }, { 2, -1 }, } },
+ /* timedia_4008a */ { 1, { { 0, 1 }, } },
+ /* timedia_4018 */ { 2, { { 0, 1 }, { 2, 3 }, } },
+ /* timedia_9018a */ { 2, { { 0, 1 }, { 2, 3 }, } },
+ /* SYBA uses fixed offsets in
+ a 1K io window */
+ /* syba_2p_epp AP138B */ { 2, { { 0, 0x078 }, { 0, 0x178 }, } },
+ /* syba_1p_ecp W83787 */ { 1, { { 0, 0x078 }, } },
+ /* titan_010l */ { 1, { { 3, -1 }, } },
+ /* titan_1284p2 */ { 2, { { 0, 1 }, { 2, 3 }, } },
+ /* avlab_1p */ { 1, { { 0, 1}, } },
+ /* avlab_2p */ { 2, { { 0, 1}, { 2, 3 },} },
+ /* The Oxford Semi cards are unusual: 954 doesn't support ECP,
+ * and 840 locks up if you write 1 to bit 2! */
+ /* oxsemi_954 */ { 1, { { 0, -1 }, } },
+ /* oxsemi_840 */ { 1, { { 0, -1 }, } },
+ /* aks_0100 */ { 1, { { 0, -1 }, } },
+ /* mobility_pp */ { 1, { { 0, 1 }, } },
+ /* netmos_9705 */ { 1, { { 0, -1 }, } }, /* untested */
+ /* netmos_9715 */ { 2, { { 0, 1 }, { 2, 3 },} }, /* untested */
+ /* netmos_9755 */ { 2, { { 0, 1 }, { 2, 3 },} }, /* untested */
+ /* netmos_9805 */ { 1, { { 0, -1 }, } }, /* untested */
+ /* netmos_9815 */ { 2, { { 0, -1 }, { 2, -1 }, } }, /* untested */
+ /* netmos_9855 */ { 2, { { 0, -1 }, { 2, -1 }, } }, /* untested */
+};
+
+static struct pci_device_id parport_pc_pci_tbl[] = {
+ /* Super-IO onboard chips */
+ { 0x1106, 0x0686, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_686a },
+ { 0x1106, 0x8231, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_8231 },
+ { PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8872,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_ite_8872 },
+
+ /* PCI cards */
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1P_10x,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P_10x,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1P_20x,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1p_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P_20x,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p_20x },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PARALLEL,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DUAL_PAR_A,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel_dual_a },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DUAL_PAR_B,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel_dual_b },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_BOCA_IOPPAR,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, boca_ioppar },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_EXSYS, PCI_SUBDEVICE_ID_EXSYS_4014, 0,0, plx_9050 },
+ /* PCI_VENDOR_ID_TIMEDIA/SUNIX has many differing cards ...*/
+ { 0x1409, 0x7168, 0x1409, 0x4078, 0, 0, timedia_4078a },
+ { 0x1409, 0x7168, 0x1409, 0x4079, 0, 0, timedia_4079h },
+ { 0x1409, 0x7168, 0x1409, 0x4085, 0, 0, timedia_4085h },
+ { 0x1409, 0x7168, 0x1409, 0x4088, 0, 0, timedia_4088a },
+ { 0x1409, 0x7168, 0x1409, 0x4089, 0, 0, timedia_4089a },
+ { 0x1409, 0x7168, 0x1409, 0x4095, 0, 0, timedia_4095a },
+ { 0x1409, 0x7168, 0x1409, 0x4096, 0, 0, timedia_4096a },
+ { 0x1409, 0x7168, 0x1409, 0x5078, 0, 0, timedia_4078u },
+ { 0x1409, 0x7168, 0x1409, 0x5079, 0, 0, timedia_4079a },
+ { 0x1409, 0x7168, 0x1409, 0x5085, 0, 0, timedia_4085u },
+ { 0x1409, 0x7168, 0x1409, 0x6079, 0, 0, timedia_4079r },
+ { 0x1409, 0x7168, 0x1409, 0x7079, 0, 0, timedia_4079s },
+ { 0x1409, 0x7168, 0x1409, 0x8079, 0, 0, timedia_4079d },
+ { 0x1409, 0x7168, 0x1409, 0x9079, 0, 0, timedia_4079e },
+ { 0x1409, 0x7168, 0x1409, 0xa079, 0, 0, timedia_4079f },
+ { 0x1409, 0x7168, 0x1409, 0xb079, 0, 0, timedia_9079a },
+ { 0x1409, 0x7168, 0x1409, 0xc079, 0, 0, timedia_9079b },
+ { 0x1409, 0x7168, 0x1409, 0xd079, 0, 0, timedia_9079c },
+ { 0x1409, 0x7268, 0x1409, 0x0101, 0, 0, timedia_4006a },
+ { 0x1409, 0x7268, 0x1409, 0x0102, 0, 0, timedia_4014 },
+ { 0x1409, 0x7268, 0x1409, 0x0103, 0, 0, timedia_4008a },
+ { 0x1409, 0x7268, 0x1409, 0x0104, 0, 0, timedia_4018 },
+ { 0x1409, 0x7268, 0x1409, 0x9018, 0, 0, timedia_9018a },
+ { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
+ { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_2P_EPP,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_2p_epp },
+ { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_1P_ECP,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_1p_ecp },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_010L,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_010l },
+ { 0x9710, 0x9815, 0x1000, 0x0020, 0, 0, titan_1284p2 },
+ /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
+ { 0x14db, 0x2120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1p}, /* AFAVLAB_TK9902 */
+ { 0x14db, 0x2121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2p},
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954PP,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_954 },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_12PCI840,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_840 },
+ { PCI_VENDOR_ID_AKS, PCI_DEVICE_ID_AKS_ALADDINCARD,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, aks_0100 },
+ /* NetMos communication controllers */
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9705,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9705 },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9715,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9715 },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9755,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9755 },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9805,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9805 },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9815,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9815 },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9855 },
+ { 0, } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci,parport_pc_pci_tbl);
+
+struct pci_parport_data {
+ int num;
+ struct parport *ports[2];
+};
+
+static int parport_pc_pci_probe (struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ int err, count, n, i = id->driver_data;
+ struct pci_parport_data *data;
+
+ if (i < last_sio)
+ /* This is an onboard Super-IO and has already been probed */
+ return 0;
+
+ /* This is a PCI card */
+ i -= last_sio;
+ count = 0;
+ if ((err = pci_enable_device (dev)) != 0)
+ return err;
+
+ data = kmalloc(sizeof(struct pci_parport_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ if (cards[i].preinit_hook &&
+ cards[i].preinit_hook (dev, PARPORT_IRQ_NONE, PARPORT_DMA_NONE)) {
+ kfree(data);
+ return -ENODEV;
+ }
+
+ for (n = 0; n < cards[i].numports; n++) {
+ int lo = cards[i].addr[n].lo;
+ int hi = cards[i].addr[n].hi;
+ unsigned long io_lo, io_hi;
+ io_lo = pci_resource_start (dev, lo);
+ io_hi = 0;
+ if ((hi >= 0) && (hi <= 6))
+ io_hi = pci_resource_start (dev, hi);
+ else if (hi > 6)
+ io_lo += hi; /* Reinterpret the meaning of
+ "hi" as an offset (see SYBA
+ def.) */
+ /* TODO: test if sharing interrupts works */
+ printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
+ "I/O at %#lx(%#lx)\n",
+ parport_pc_pci_tbl[i + last_sio].vendor,
+ parport_pc_pci_tbl[i + last_sio].device, io_lo, io_hi);
+ data->ports[count] =
+ parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
+ PARPORT_DMA_NONE, dev);
+ if (data->ports[count])
+ count++;
+ }
+
+ data->num = count;
+
+ if (cards[i].postinit_hook)
+ cards[i].postinit_hook (dev, count == 0);
+
+ if (count) {
+ pci_set_drvdata(dev, data);
+ return 0;
+ }
+
+ kfree(data);
+
+ return -ENODEV;
+}
+
+static void __devexit parport_pc_pci_remove(struct pci_dev *dev)
+{
+ struct pci_parport_data *data = pci_get_drvdata(dev);
+ int i;
+
+ pci_set_drvdata(dev, NULL);
+
+ if (data) {
+ for (i = data->num - 1; i >= 0; i--)
+ parport_pc_unregister_port(data->ports[i]);
+
+ kfree(data);
+ }
+}
+
+static struct pci_driver parport_pc_pci_driver = {
+ .name = "parport_pc",
+ .id_table = parport_pc_pci_tbl,
+ .probe = parport_pc_pci_probe,
+ .remove = __devexit_p(parport_pc_pci_remove),
+};
+
+static int __init parport_pc_init_superio (int autoirq, int autodma)
+{
+ const struct pci_device_id *id;
+ struct pci_dev *pdev = NULL;
+ int ret = 0;
+
+ while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) != NULL) {
+ id = pci_match_device (parport_pc_pci_tbl, pdev);
+ if (id == NULL || id->driver_data >= last_sio)
+ continue;
+
+ if (parport_pc_superio_info[id->driver_data].probe
+ (pdev, autoirq, autodma,parport_pc_superio_info[id->driver_data].via)) {
+ ret++;
+ }
+ }
+
+ return ret; /* number of devices found */
+}
+#else
+static struct pci_driver parport_pc_pci_driver;
+static int __init parport_pc_init_superio(int autoirq, int autodma) {return 0;}
+#endif /* CONFIG_PCI */
+
+
+static const struct pnp_device_id parport_pc_pnp_tbl[] = {
+ /* Standard LPT Printer Port */
+ {.id = "PNP0400", .driver_data = 0},
+ /* ECP Printer Port */
+ {.id = "PNP0401", .driver_data = 0},
+ { }
+};
+
+MODULE_DEVICE_TABLE(pnp,parport_pc_pnp_tbl);
+
+static int parport_pc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id)
+{
+ struct parport *pdata;
+ unsigned long io_lo, io_hi;
+ int dma, irq;
+
+ if (pnp_port_valid(dev,0) &&
+ !(pnp_port_flags(dev,0) & IORESOURCE_DISABLED)) {
+ io_lo = pnp_port_start(dev,0);
+ } else
+ return -EINVAL;
+
+ if (pnp_port_valid(dev,1) &&
+ !(pnp_port_flags(dev,1) & IORESOURCE_DISABLED)) {
+ io_hi = pnp_port_start(dev,1);
+ } else
+ io_hi = 0;
+
+ if (pnp_irq_valid(dev,0) &&
+ !(pnp_irq_flags(dev,0) & IORESOURCE_DISABLED)) {
+ irq = pnp_irq(dev,0);
+ } else
+ irq = PARPORT_IRQ_NONE;
+
+ if (pnp_dma_valid(dev,0) &&
+ !(pnp_dma_flags(dev,0) & IORESOURCE_DISABLED)) {
+ dma = pnp_dma(dev,0);
+ } else
+ dma = PARPORT_DMA_NONE;
+
+ printk(KERN_INFO "parport: PnPBIOS parport detected.\n");
+ if (!(pdata = parport_pc_probe_port (io_lo, io_hi, irq, dma, NULL)))
+ return -ENODEV;
+
+ pnp_set_drvdata(dev,pdata);
+ return 0;
+}
+
+static void parport_pc_pnp_remove(struct pnp_dev *dev)
+{
+ struct parport *pdata = (struct parport *)pnp_get_drvdata(dev);
+ if (!pdata)
+ return;
+
+ parport_pc_unregister_port(pdata);
+}
+
+/* we only need the pnp layer to activate the device, at least for now */
+static struct pnp_driver parport_pc_pnp_driver = {
+ .name = "parport_pc",
+ .id_table = parport_pc_pnp_tbl,
+ .probe = parport_pc_pnp_probe,
+ .remove = parport_pc_pnp_remove,
+};
+
+
+/* This is called by parport_pc_find_nonpci_ports (in asm/parport.h) */
+static int __devinit __attribute__((unused))
+parport_pc_find_isa_ports (int autoirq, int autodma)
+{
+ int count = 0;
+
+ if (parport_pc_probe_port(0x3bc, 0x7bc, autoirq, autodma, NULL))
+ count++;
+ if (parport_pc_probe_port(0x378, 0x778, autoirq, autodma, NULL))
+ count++;
+ if (parport_pc_probe_port(0x278, 0x678, autoirq, autodma, NULL))
+ count++;
+
+ return count;
+}
+
+/* This function is called by parport_pc_init if the user didn't
+ * specify any ports to probe. Its job is to find some ports. Order
+ * is important here -- we want ISA ports to be registered first,
+ * followed by PCI cards (for least surprise), but before that we want
+ * to do chipset-specific tests for some onboard ports that we know
+ * about.
+ *
+ * autoirq is PARPORT_IRQ_NONE, PARPORT_IRQ_AUTO, or PARPORT_IRQ_PROBEONLY
+ * autodma is PARPORT_DMA_NONE or PARPORT_DMA_AUTO
+ */
+static int __init parport_pc_find_ports (int autoirq, int autodma)
+{
+ int count = 0, r;
+
+#ifdef CONFIG_PARPORT_PC_SUPERIO
+ detect_and_report_winbond ();
+ detect_and_report_smsc ();
+#endif
+
+ /* Onboard SuperIO chipsets that show themselves on the PCI bus. */
+ count += parport_pc_init_superio (autoirq, autodma);
+
+ /* PnP ports, skip detection if SuperIO already found them */
+ if (!count) {
+ r = pnp_register_driver (&parport_pc_pnp_driver);
+ if (r >= 0) {
+ pnp_registered_parport = 1;
+ count += r;
+ }
+ }
+
+ /* ISA ports and whatever (see asm/parport.h). */
+ count += parport_pc_find_nonpci_ports (autoirq, autodma);
+
+ r = pci_register_driver (&parport_pc_pci_driver);
+ if (r)
+ return r;
+ pci_registered_parport = 1;
+ count += 1;
+
+ return count;
+}
+
+/*
+ * Piles of crap below pretend to be a parser for module and kernel
+ * parameters. Say "thank you" to whoever had come up with that
+ * syntax and keep in mind that code below is a cleaned up version.
+ */
+
+static int __initdata io[PARPORT_PC_MAX_PORTS+1] = { [0 ... PARPORT_PC_MAX_PORTS] = 0 };
+static int __initdata io_hi[PARPORT_PC_MAX_PORTS+1] =
+ { [0 ... PARPORT_PC_MAX_PORTS] = PARPORT_IOHI_AUTO };
+static int __initdata dmaval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_DMA_NONE };
+static int __initdata irqval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_IRQ_PROBEONLY };
+
+static int __init parport_parse_param(const char *s, int *val,
+ int automatic, int none, int nofifo)
+{
+ if (!s)
+ return 0;
+ if (!strncmp(s, "auto", 4))
+ *val = automatic;
+ else if (!strncmp(s, "none", 4))
+ *val = none;
+ else if (nofifo && !strncmp(s, "nofifo", 4))
+ *val = nofifo;
+ else {
+ char *ep;
+ unsigned long r = simple_strtoul(s, &ep, 0);
+ if (ep != s)
+ *val = r;
+ else {
+ printk(KERN_ERR "parport: bad specifier `%s'\n", s);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int __init parport_parse_irq(const char *irqstr, int *val)
+{
+ return parport_parse_param(irqstr, val, PARPORT_IRQ_AUTO,
+ PARPORT_IRQ_NONE, 0);
+}
+
+static int __init parport_parse_dma(const char *dmastr, int *val)
+{
+ return parport_parse_param(dmastr, val, PARPORT_DMA_AUTO,
+ PARPORT_DMA_NONE, PARPORT_DMA_NOFIFO);
+}
+
+#ifdef CONFIG_PCI
+static int __init parport_init_mode_setup(char *str)
+{
+ printk(KERN_DEBUG "parport_pc.c: Specified parameter parport_init_mode=%s\n", str);
+
+ if (!strcmp (str, "spp"))
+ parport_init_mode=1;
+ if (!strcmp (str, "ps2"))
+ parport_init_mode=2;
+ if (!strcmp (str, "epp"))
+ parport_init_mode=3;
+ if (!strcmp (str, "ecp"))
+ parport_init_mode=4;
+ if (!strcmp (str, "ecpepp"))
+ parport_init_mode=5;
+ return 1;
+}
+#endif
+
+#ifdef MODULE
+static const char *irq[PARPORT_PC_MAX_PORTS];
+static const char *dma[PARPORT_PC_MAX_PORTS];
+
+MODULE_PARM_DESC(io, "Base I/O address (SPP regs)");
+module_param_array(io, int, NULL, 0);
+MODULE_PARM_DESC(io_hi, "Base I/O address (ECR)");
+module_param_array(io_hi, int, NULL, 0);
+MODULE_PARM_DESC(irq, "IRQ line");
+module_param_array(irq, charp, NULL, 0);
+MODULE_PARM_DESC(dma, "DMA channel");
+module_param_array(dma, charp, NULL, 0);
+#if defined(CONFIG_PARPORT_PC_SUPERIO) || \
+ (defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
+MODULE_PARM_DESC(verbose_probing, "Log chit-chat during initialisation");
+module_param(verbose_probing, int, 0644);
+#endif
+#ifdef CONFIG_PCI
+static char *init_mode;
+MODULE_PARM_DESC(init_mode, "Initialise mode for VIA VT8231 port (spp, ps2, epp, ecp or ecpepp)");
+module_param(init_mode, charp, 0);
+#endif
+
+static int __init parse_parport_params(void)
+{
+ unsigned int i;
+ int val;
+
+#ifdef CONFIG_PCI
+ if (init_mode)
+ parport_init_mode_setup(init_mode);
+#endif
+
+ for (i = 0; i < PARPORT_PC_MAX_PORTS && io[i]; i++) {
+ if (parport_parse_irq(irq[i], &val))
+ return 1;
+ irqval[i] = val;
+ if (parport_parse_dma(dma[i], &val))
+ return 1;
+ dmaval[i] = val;
+ }
+ if (!io[0]) {
+ /* The user can make us use any IRQs or DMAs we find. */
+ if (irq[0] && !parport_parse_irq(irq[0], &val))
+ switch (val) {
+ case PARPORT_IRQ_NONE:
+ case PARPORT_IRQ_AUTO:
+ irqval[0] = val;
+ break;
+ default:
+ printk (KERN_WARNING
+ "parport_pc: irq specified "
+ "without base address. Use 'io=' "
+ "to specify one\n");
+ }
+
+ if (dma[0] && !parport_parse_dma(dma[0], &val))
+ switch (val) {
+ case PARPORT_DMA_NONE:
+ case PARPORT_DMA_AUTO:
+ dmaval[0] = val;
+ break;
+ default:
+ printk (KERN_WARNING
+ "parport_pc: dma specified "
+ "without base address. Use 'io=' "
+ "to specify one\n");
+ }
+ }
+ return 0;
+}
+
+#else
+
+static int parport_setup_ptr __initdata = 0;
+
+/*
+ * Acceptable parameters:
+ *
+ * parport=0
+ * parport=auto
+ * parport=0xBASE[,IRQ[,DMA]]
+ *
+ * IRQ/DMA may be numeric or 'auto' or 'none'
+ */
+static int __init parport_setup (char *str)
+{
+ char *endptr;
+ char *sep;
+ int val;
+
+ if (!str || !*str || (*str == '0' && !*(str+1))) {
+ /* Disable parport if "parport=0" in cmdline */
+ io[0] = PARPORT_DISABLE;
+ return 1;
+ }
+
+ if (!strncmp (str, "auto", 4)) {
+ irqval[0] = PARPORT_IRQ_AUTO;
+ dmaval[0] = PARPORT_DMA_AUTO;
+ return 1;
+ }
+
+ val = simple_strtoul (str, &endptr, 0);
+ if (endptr == str) {
+ printk (KERN_WARNING "parport=%s not understood\n", str);
+ return 1;
+ }
+
+ if (parport_setup_ptr == PARPORT_PC_MAX_PORTS) {
+ printk(KERN_ERR "parport=%s ignored, too many ports\n", str);
+ return 1;
+ }
+
+ io[parport_setup_ptr] = val;
+ irqval[parport_setup_ptr] = PARPORT_IRQ_NONE;
+ dmaval[parport_setup_ptr] = PARPORT_DMA_NONE;
+
+ sep = strchr(str, ',');
+ if (sep++) {
+ if (parport_parse_irq(sep, &val))
+ return 1;
+ irqval[parport_setup_ptr] = val;
+ sep = strchr(sep, ',');
+ if (sep++) {
+ if (parport_parse_dma(sep, &val))
+ return 1;
+ dmaval[parport_setup_ptr] = val;
+ }
+ }
+ parport_setup_ptr++;
+ return 1;
+}
+
+static int __init parse_parport_params(void)
+{
+ return io[0] == PARPORT_DISABLE;
+}
+
+__setup ("parport=", parport_setup);
+
+/*
+ * Acceptable parameters:
+ *
+ * parport_init_mode=[spp|ps2|epp|ecp|ecpepp]
+ */
+#ifdef CONFIG_PCI
+__setup("parport_init_mode=",parport_init_mode_setup);
+#endif
+#endif
+
+/* "Parser" ends here */
+
+static int __init parport_pc_init(void)
+{
+ int count = 0;
+
+ if (parse_parport_params())
+ return -EINVAL;
+
+ if (io[0]) {
+ int i;
+ /* Only probe the ports we were given. */
+ user_specified = 1;
+ for (i = 0; i < PARPORT_PC_MAX_PORTS; i++) {
+ if (!io[i])
+ break;
+ if ((io_hi[i]) == PARPORT_IOHI_AUTO)
+ io_hi[i] = 0x400 + io[i];
+ if (parport_pc_probe_port(io[i], io_hi[i],
+ irqval[i], dmaval[i], NULL))
+ count++;
+ }
+ } else
+ count += parport_pc_find_ports (irqval[0], dmaval[0]);
+
+ return 0;
+}
+
+static void __exit parport_pc_exit(void)
+{
+ if (pci_registered_parport)
+ pci_unregister_driver (&parport_pc_pci_driver);
+ if (pnp_registered_parport)
+ pnp_unregister_driver (&parport_pc_pnp_driver);
+
+ spin_lock(&ports_lock);
+ while (!list_empty(&ports_list)) {
+ struct parport_pc_private *priv;
+ struct parport *port;
+ priv = list_entry(ports_list.next,
+ struct parport_pc_private, list);
+ port = priv->port;
+ spin_unlock(&ports_lock);
+ parport_pc_unregister_port(port);
+ spin_lock(&ports_lock);
+ }
+ spin_unlock(&ports_lock);
+}
+
+MODULE_AUTHOR("Phil Blundell, Tim Waugh, others");
+MODULE_DESCRIPTION("PC-style parallel port driver");
+MODULE_LICENSE("GPL");
+module_init(parport_pc_init)
+module_exit(parport_pc_exit)
diff --git a/drivers/parport/parport_serial.c b/drivers/parport/parport_serial.c
new file mode 100644
index 000000000000..6715a17b5d0f
--- /dev/null
+++ b/drivers/parport/parport_serial.c
@@ -0,0 +1,485 @@
+/*
+ * Support for common PCI multi-I/O cards (which is most of them)
+ *
+ * Copyright (C) 2001 Tim Waugh <twaugh@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ *
+ * Multi-function PCI cards are supposed to present separate logical
+ * devices on the bus. A common thing to do seems to be to just use
+ * one logical device with lots of base address registers for both
+ * parallel ports and serial ports. This driver is for dealing with
+ * that.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/parport.h>
+#include <linux/parport_pc.h>
+#include <linux/serial.h>
+#include <linux/serialP.h>
+#include <linux/list.h>
+#include <linux/8250_pci.h>
+
+#include <asm/serial.h>
+
+enum parport_pc_pci_cards {
+ titan_110l = 0,
+ titan_210l,
+ netmos_9xx5_combo,
+ avlab_1s1p,
+ avlab_1s1p_650,
+ avlab_1s1p_850,
+ avlab_1s2p,
+ avlab_1s2p_650,
+ avlab_1s2p_850,
+ avlab_2s1p,
+ avlab_2s1p_650,
+ avlab_2s1p_850,
+ siig_1s1p_10x,
+ siig_2s1p_10x,
+ siig_2p1s_20x,
+ siig_1s1p_20x,
+ siig_2s1p_20x,
+};
+
+/* each element directly indexed from enum list, above */
+struct parport_pc_pci {
+ int numports;
+ struct { /* BAR (base address registers) numbers in the config
+ space header */
+ int lo;
+ int hi; /* -1 if not there, >6 for offset-method (max
+ BAR is 6) */
+ } addr[4];
+
+ /* If set, this is called immediately after pci_enable_device.
+ * If it returns non-zero, no probing will take place and the
+ * ports will not be used. */
+ int (*preinit_hook) (struct pci_dev *pdev, struct parport_pc_pci *card,
+ int autoirq, int autodma);
+
+ /* If set, this is called after probing for ports. If 'failed'
+ * is non-zero we couldn't use any of the ports. */
+ void (*postinit_hook) (struct pci_dev *pdev,
+ struct parport_pc_pci *card, int failed);
+};
+
+static int __devinit netmos_parallel_init(struct pci_dev *dev, struct parport_pc_pci *card, int autoirq, int autodma)
+{
+ /*
+ * Netmos uses the subdevice ID to indicate the number of parallel
+ * and serial ports. The form is 0x00PS, where <P> is the number of
+ * parallel ports and <S> is the number of serial ports.
+ */
+ card->numports = (dev->subsystem_device & 0xf0) >> 4;
+ return 0;
+}
+
+static struct parport_pc_pci cards[] __devinitdata = {
+ /* titan_110l */ { 1, { { 3, -1 }, } },
+ /* titan_210l */ { 1, { { 3, -1 }, } },
+ /* netmos_9xx5_combo */ { 1, { { 2, -1 }, }, netmos_parallel_init },
+ /* avlab_1s1p */ { 1, { { 1, 2}, } },
+ /* avlab_1s1p_650 */ { 1, { { 1, 2}, } },
+ /* avlab_1s1p_850 */ { 1, { { 1, 2}, } },
+ /* avlab_1s2p */ { 2, { { 1, 2}, { 3, 4 },} },
+ /* avlab_1s2p_650 */ { 2, { { 1, 2}, { 3, 4 },} },
+ /* avlab_1s2p_850 */ { 2, { { 1, 2}, { 3, 4 },} },
+ /* avlab_2s1p */ { 1, { { 2, 3}, } },
+ /* avlab_2s1p_650 */ { 1, { { 2, 3}, } },
+ /* avlab_2s1p_850 */ { 1, { { 2, 3}, } },
+ /* siig_1s1p_10x */ { 1, { { 3, 4 }, } },
+ /* siig_2s1p_10x */ { 1, { { 4, 5 }, } },
+ /* siig_2p1s_20x */ { 2, { { 1, 2 }, { 3, 4 }, } },
+ /* siig_1s1p_20x */ { 1, { { 1, 2 }, } },
+ /* siig_2s1p_20x */ { 1, { { 2, 3 }, } },
+};
+
+static struct pci_device_id parport_serial_pci_tbl[] = {
+ /* PCI cards */
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_110L,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_110l },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_210L,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_210l },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9735,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9745,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9845,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
+ { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9855,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9xx5_combo },
+ /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
+ { 0x14db, 0x2110, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p},
+ { 0x14db, 0x2111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_650},
+ { 0x14db, 0x2112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s1p_850},
+ { 0x14db, 0x2140, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p},
+ { 0x14db, 0x2141, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_650},
+ { 0x14db, 0x2142, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1s2p_850},
+ { 0x14db, 0x2160, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p},
+ { 0x14db, 0x2161, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_650},
+ { 0x14db, 0x2162, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2s1p_850},
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x },
+
+ { 0, } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci,parport_serial_pci_tbl);
+
+struct pci_board_no_ids {
+ int flags;
+ int num_ports;
+ int base_baud;
+ int uart_offset;
+ int reg_shift;
+ int (*init_fn)(struct pci_dev *dev, struct pci_board_no_ids *board,
+ int enable);
+ int first_uart_offset;
+};
+
+static int __devinit siig10x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
+{
+ return pci_siig10x_fn(dev, enable);
+}
+
+static int __devinit siig20x_init_fn(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
+{
+ return pci_siig20x_fn(dev, enable);
+}
+
+static int __devinit netmos_serial_init(struct pci_dev *dev, struct pci_board_no_ids *board, int enable)
+{
+ board->num_ports = dev->subsystem_device & 0xf;
+ return 0;
+}
+
+static struct pci_board_no_ids pci_boards[] __devinitdata = {
+ /*
+ * PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
+ * Offset to get to next UART's registers,
+ * Register shift to use for memory-mapped I/O,
+ * Initialization function, first UART offset
+ */
+
+// Cards not tested are marked n/t
+// If you have one of these cards and it works for you, please tell me..
+
+/* titan_110l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 1, 921600 },
+/* titan_210l */ { SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
+/* netmos_9xx5_combo */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200, 0, 0, netmos_serial_init },
+/* avlab_1s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
+/* avlab_1s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
+/* avlab_1s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
+/* avlab_1s2p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
+/* avlab_1s2p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
+/* avlab_1s2p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 },
+/* avlab_2s1p (n/t) */ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
+/* avlab_2s1p_650 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
+/* avlab_2s1p_850 (nt)*/{ SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 },
+/* siig_1s1p_10x */ { SPCI_FL_BASE2, 1, 460800, 0, 0, siig10x_init_fn },
+/* siig_2s1p_10x */ { SPCI_FL_BASE2, 1, 921600, 0, 0, siig10x_init_fn },
+/* siig_2p1s_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
+/* siig_1s1p_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
+/* siig_2s1p_20x */ { SPCI_FL_BASE0, 1, 921600, 0, 0, siig20x_init_fn },
+};
+
+struct parport_serial_private {
+ int num_ser;
+ int line[20];
+ struct pci_board_no_ids ser;
+ int num_par;
+ struct parport *port[PARPORT_MAX];
+ struct parport_pc_pci par;
+};
+
+static int __devinit get_pci_port (struct pci_dev *dev,
+ struct pci_board_no_ids *board,
+ struct serial_struct *req,
+ int idx)
+{
+ unsigned long port;
+ int base_idx;
+ int max_port;
+ int offset;
+
+ base_idx = SPCI_FL_GET_BASE(board->flags);
+ if (board->flags & SPCI_FL_BASE_TABLE)
+ base_idx += idx;
+
+ if (board->flags & SPCI_FL_REGION_SZ_CAP) {
+ max_port = pci_resource_len(dev, base_idx) / 8;
+ if (idx >= max_port)
+ return 1;
+ }
+
+ offset = board->first_uart_offset;
+
+ /* Timedia/SUNIX uses a mixture of BARs and offsets */
+ /* Ugh, this is ugly as all hell --- TYT */
+ if(dev->vendor == PCI_VENDOR_ID_TIMEDIA ) /* 0x1409 */
+ switch(idx) {
+ case 0: base_idx=0;
+ break;
+ case 1: base_idx=0; offset=8;
+ break;
+ case 2: base_idx=1;
+ break;
+ case 3: base_idx=1; offset=8;
+ break;
+ case 4: /* BAR 2*/
+ case 5: /* BAR 3 */
+ case 6: /* BAR 4*/
+ case 7: base_idx=idx-2; /* BAR 5*/
+ }
+
+ port = pci_resource_start(dev, base_idx) + offset;
+
+ if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
+ port += idx * (board->uart_offset ? board->uart_offset : 8);
+
+ if (pci_resource_flags (dev, base_idx) & IORESOURCE_IO) {
+ int high_bits_offset = ((sizeof(long)-sizeof(int))*8);
+ req->port = port;
+ if (high_bits_offset)
+ req->port_high = port >> high_bits_offset;
+ else
+ req->port_high = 0;
+ return 0;
+ }
+ req->io_type = SERIAL_IO_MEM;
+ req->iomem_base = ioremap(port, board->uart_offset);
+ req->iomem_reg_shift = board->reg_shift;
+ req->port = 0;
+ return req->iomem_base ? 0 : 1;
+}
+
+/* Register the serial port(s) of a PCI card. */
+static int __devinit serial_register (struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct pci_board_no_ids *board;
+ struct parport_serial_private *priv = pci_get_drvdata (dev);
+ struct serial_struct serial_req;
+ int base_baud;
+ int k;
+ int success = 0;
+
+ priv->ser = pci_boards[id->driver_data];
+ board = &priv->ser;
+ if (board->init_fn && ((board->init_fn) (dev, board, 1) != 0))
+ return 1;
+
+ base_baud = board->base_baud;
+ if (!base_baud)
+ base_baud = BASE_BAUD;
+ memset (&serial_req, 0, sizeof (serial_req));
+
+ for (k = 0; k < board->num_ports; k++) {
+ int line;
+
+ if (priv->num_ser == ARRAY_SIZE (priv->line)) {
+ printk (KERN_WARNING
+ "parport_serial: %s: only %u serial lines "
+ "supported (%d reported)\n", pci_name (dev),
+ ARRAY_SIZE (priv->line), board->num_ports);
+ break;
+ }
+
+ serial_req.irq = dev->irq;
+ if (get_pci_port (dev, board, &serial_req, k))
+ break;
+ serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
+ serial_req.baud_base = base_baud;
+ line = register_serial (&serial_req);
+ if (line < 0) {
+ printk (KERN_DEBUG
+ "parport_serial: register_serial failed\n");
+ continue;
+ }
+ priv->line[priv->num_ser++] = line;
+ success = 1;
+ }
+
+ return success ? 0 : 1;
+}
+
+/* Register the parallel port(s) of a PCI card. */
+static int __devinit parport_register (struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct parport_pc_pci *card;
+ struct parport_serial_private *priv = pci_get_drvdata (dev);
+ int i = id->driver_data, n;
+ int success = 0;
+
+ priv->par = cards[id->driver_data];
+ card = &priv->par;
+ if (card->preinit_hook &&
+ card->preinit_hook (dev, card, PARPORT_IRQ_NONE, PARPORT_DMA_NONE))
+ return -ENODEV;
+
+ for (n = 0; n < card->numports; n++) {
+ struct parport *port;
+ int lo = card->addr[n].lo;
+ int hi = card->addr[n].hi;
+ unsigned long io_lo, io_hi;
+
+ if (priv->num_par == ARRAY_SIZE (priv->port)) {
+ printk (KERN_WARNING
+ "parport_serial: %s: only %u parallel ports "
+ "supported (%d reported)\n", pci_name (dev),
+ ARRAY_SIZE (priv->port), card->numports);
+ break;
+ }
+
+ io_lo = pci_resource_start (dev, lo);
+ io_hi = 0;
+ if ((hi >= 0) && (hi <= 6))
+ io_hi = pci_resource_start (dev, hi);
+ else if (hi > 6)
+ io_lo += hi; /* Reinterpret the meaning of
+ "hi" as an offset (see SYBA
+ def.) */
+ /* TODO: test if sharing interrupts works */
+ printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
+ "I/O at %#lx(%#lx)\n",
+ parport_serial_pci_tbl[i].vendor,
+ parport_serial_pci_tbl[i].device, io_lo, io_hi);
+ port = parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
+ PARPORT_DMA_NONE, dev);
+ if (port) {
+ priv->port[priv->num_par++] = port;
+ success = 1;
+ }
+ }
+
+ if (card->postinit_hook)
+ card->postinit_hook (dev, card, !success);
+
+ return success ? 0 : 1;
+}
+
+static int __devinit parport_serial_pci_probe (struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct parport_serial_private *priv;
+ int err;
+
+ priv = kmalloc (sizeof *priv, GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+ priv->num_ser = priv->num_par = 0;
+ pci_set_drvdata (dev, priv);
+
+ err = pci_enable_device (dev);
+ if (err) {
+ pci_set_drvdata (dev, NULL);
+ kfree (priv);
+ return err;
+ }
+
+ if (parport_register (dev, id)) {
+ pci_set_drvdata (dev, NULL);
+ kfree (priv);
+ return -ENODEV;
+ }
+
+ if (serial_register (dev, id)) {
+ int i;
+ for (i = 0; i < priv->num_par; i++)
+ parport_pc_unregister_port (priv->port[i]);
+ pci_set_drvdata (dev, NULL);
+ kfree (priv);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __devexit parport_serial_pci_remove (struct pci_dev *dev)
+{
+ struct parport_serial_private *priv = pci_get_drvdata (dev);
+ int i;
+
+ // Serial ports
+ for (i = 0; i < priv->num_ser; i++) {
+ unregister_serial (priv->line[i]);
+
+ if (priv->ser.init_fn)
+ (priv->ser.init_fn) (dev, &priv->ser, 0);
+ }
+ pci_set_drvdata (dev, NULL);
+
+ // Parallel ports
+ for (i = 0; i < priv->num_par; i++)
+ parport_pc_unregister_port (priv->port[i]);
+
+ kfree (priv);
+ return;
+}
+
+static struct pci_driver parport_serial_pci_driver = {
+ .name = "parport_serial",
+ .id_table = parport_serial_pci_tbl,
+ .probe = parport_serial_pci_probe,
+ .remove = __devexit_p(parport_serial_pci_remove),
+};
+
+
+static int __init parport_serial_init (void)
+{
+ return pci_module_init (&parport_serial_pci_driver);
+}
+
+static void __exit parport_serial_exit (void)
+{
+ pci_unregister_driver (&parport_serial_pci_driver);
+ return;
+}
+
+MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
+MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
+MODULE_LICENSE("GPL");
+
+module_init(parport_serial_init);
+module_exit(parport_serial_exit);
diff --git a/drivers/parport/parport_sunbpp.c b/drivers/parport/parport_sunbpp.c
new file mode 100644
index 000000000000..36a1556e64c7
--- /dev/null
+++ b/drivers/parport/parport_sunbpp.c
@@ -0,0 +1,412 @@
+/* $Id: parport_sunbpp.c,v 1.12 2001/05/26 03:01:42 davem Exp $
+ * Parallel-port routines for Sun architecture
+ *
+ * Author: Derrick J. Brashear <shadow@dementia.org>
+ *
+ * based on work by:
+ * Phil Blundell <philb@gnu.org>
+ * Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Jose Renau <renau@acm.org>
+ * David Campbell <campbell@tirian.che.curtin.edu.au>
+ * Grant Guenther <grant@torque.net>
+ * Eddie C. Dost <ecd@skynet.be>
+ * Stephen Williams (steve@icarus.com)
+ * Gus Baldauf (gbaldauf@ix.netcom.com)
+ * Peter Zaitcev
+ * Tom Dyas
+ */
+
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+#include <linux/parport.h>
+
+#include <asm/ptrace.h>
+#include <linux/interrupt.h>
+
+#include <asm/io.h>
+#include <asm/oplib.h> /* OpenProm Library */
+#include <asm/sbus.h>
+#include <asm/dma.h> /* BPP uses LSI 64854 for DMA */
+#include <asm/irq.h>
+#include <asm/sunbpp.h>
+
+#undef __SUNBPP_DEBUG
+#ifdef __SUNBPP_DEBUG
+#define dprintk(x) printk x
+#else
+#define dprintk(x)
+#endif
+
+static irqreturn_t parport_sunbpp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ parport_generic_irq(irq, (struct parport *) dev_id, regs);
+ return IRQ_HANDLED;
+}
+
+static void parport_sunbpp_disable_irq(struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ u32 tmp;
+
+ tmp = sbus_readl(&regs->p_csr);
+ tmp &= ~DMA_INT_ENAB;
+ sbus_writel(tmp, &regs->p_csr);
+}
+
+static void parport_sunbpp_enable_irq(struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ u32 tmp;
+
+ tmp = sbus_readl(&regs->p_csr);
+ tmp |= DMA_INT_ENAB;
+ sbus_writel(tmp, &regs->p_csr);
+}
+
+static void parport_sunbpp_write_data(struct parport *p, unsigned char d)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+
+ sbus_writeb(d, &regs->p_dr);
+ dprintk((KERN_DEBUG "wrote 0x%x\n", d));
+}
+
+static unsigned char parport_sunbpp_read_data(struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+
+ return sbus_readb(&regs->p_dr);
+}
+
+#if 0
+static void control_pc_to_sunbpp(struct parport *p, unsigned char status)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+ unsigned char value_or = sbus_readb(&regs->p_or);
+
+ if (status & PARPORT_CONTROL_STROBE)
+ value_tcr |= P_TCR_DS;
+ if (status & PARPORT_CONTROL_AUTOFD)
+ value_or |= P_OR_AFXN;
+ if (status & PARPORT_CONTROL_INIT)
+ value_or |= P_OR_INIT;
+ if (status & PARPORT_CONTROL_SELECT)
+ value_or |= P_OR_SLCT_IN;
+
+ sbus_writeb(value_or, &regs->p_or);
+ sbus_writeb(value_tcr, &regs->p_tcr);
+}
+#endif
+
+static unsigned char status_sunbpp_to_pc(struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ unsigned char bits = 0;
+ unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+ unsigned char value_ir = sbus_readb(&regs->p_ir);
+
+ if (!(value_ir & P_IR_ERR))
+ bits |= PARPORT_STATUS_ERROR;
+ if (!(value_ir & P_IR_SLCT))
+ bits |= PARPORT_STATUS_SELECT;
+ if (!(value_ir & P_IR_PE))
+ bits |= PARPORT_STATUS_PAPEROUT;
+ if (value_tcr & P_TCR_ACK)
+ bits |= PARPORT_STATUS_ACK;
+ if (!(value_tcr & P_TCR_BUSY))
+ bits |= PARPORT_STATUS_BUSY;
+
+ dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", regs->p_tcr, regs->p_ir));
+ dprintk((KERN_DEBUG "read status 0x%x\n", bits));
+ return bits;
+}
+
+static unsigned char control_sunbpp_to_pc(struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ unsigned char bits = 0;
+ unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+ unsigned char value_or = sbus_readb(&regs->p_or);
+
+ if (!(value_tcr & P_TCR_DS))
+ bits |= PARPORT_CONTROL_STROBE;
+ if (!(value_or & P_OR_AFXN))
+ bits |= PARPORT_CONTROL_AUTOFD;
+ if (!(value_or & P_OR_INIT))
+ bits |= PARPORT_CONTROL_INIT;
+ if (value_or & P_OR_SLCT_IN)
+ bits |= PARPORT_CONTROL_SELECT;
+
+ dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+ dprintk((KERN_DEBUG "read control 0x%x\n", bits));
+ return bits;
+}
+
+static unsigned char parport_sunbpp_read_control(struct parport *p)
+{
+ return control_sunbpp_to_pc(p);
+}
+
+static unsigned char parport_sunbpp_frob_control(struct parport *p,
+ unsigned char mask,
+ unsigned char val)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+ unsigned char value_or = sbus_readb(&regs->p_or);
+
+ dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+ if (mask & PARPORT_CONTROL_STROBE) {
+ if (val & PARPORT_CONTROL_STROBE) {
+ value_tcr &= ~P_TCR_DS;
+ } else {
+ value_tcr |= P_TCR_DS;
+ }
+ }
+ if (mask & PARPORT_CONTROL_AUTOFD) {
+ if (val & PARPORT_CONTROL_AUTOFD) {
+ value_or &= ~P_OR_AFXN;
+ } else {
+ value_or |= P_OR_AFXN;
+ }
+ }
+ if (mask & PARPORT_CONTROL_INIT) {
+ if (val & PARPORT_CONTROL_INIT) {
+ value_or &= ~P_OR_INIT;
+ } else {
+ value_or |= P_OR_INIT;
+ }
+ }
+ if (mask & PARPORT_CONTROL_SELECT) {
+ if (val & PARPORT_CONTROL_SELECT) {
+ value_or |= P_OR_SLCT_IN;
+ } else {
+ value_or &= ~P_OR_SLCT_IN;
+ }
+ }
+
+ sbus_writeb(value_or, &regs->p_or);
+ sbus_writeb(value_tcr, &regs->p_tcr);
+ dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+ return parport_sunbpp_read_control(p);
+}
+
+static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
+{
+ const unsigned char wm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+
+ parport_sunbpp_frob_control (p, wm, d & wm);
+}
+
+static unsigned char parport_sunbpp_read_status(struct parport *p)
+{
+ return status_sunbpp_to_pc(p);
+}
+
+static void parport_sunbpp_data_forward (struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+
+ dprintk((KERN_DEBUG "forward\n"));
+ value_tcr &= ~P_TCR_DIR;
+ sbus_writeb(value_tcr, &regs->p_tcr);
+}
+
+static void parport_sunbpp_data_reverse (struct parport *p)
+{
+ struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+ u8 val = sbus_readb(&regs->p_tcr);
+
+ dprintk((KERN_DEBUG "reverse\n"));
+ val |= P_TCR_DIR;
+ sbus_writeb(val, &regs->p_tcr);
+}
+
+static void parport_sunbpp_init_state(struct pardevice *dev, struct parport_state *s)
+{
+ s->u.pc.ctr = 0xc;
+ s->u.pc.ecr = 0x0;
+}
+
+static void parport_sunbpp_save_state(struct parport *p, struct parport_state *s)
+{
+ s->u.pc.ctr = parport_sunbpp_read_control(p);
+}
+
+static void parport_sunbpp_restore_state(struct parport *p, struct parport_state *s)
+{
+ parport_sunbpp_write_control(p, s->u.pc.ctr);
+}
+
+static struct parport_operations parport_sunbpp_ops =
+{
+ .write_data = parport_sunbpp_write_data,
+ .read_data = parport_sunbpp_read_data,
+
+ .write_control = parport_sunbpp_write_control,
+ .read_control = parport_sunbpp_read_control,
+ .frob_control = parport_sunbpp_frob_control,
+
+ .read_status = parport_sunbpp_read_status,
+
+ .enable_irq = parport_sunbpp_enable_irq,
+ .disable_irq = parport_sunbpp_disable_irq,
+
+ .data_forward = parport_sunbpp_data_forward,
+ .data_reverse = parport_sunbpp_data_reverse,
+
+ .init_state = parport_sunbpp_init_state,
+ .save_state = parport_sunbpp_save_state,
+ .restore_state = parport_sunbpp_restore_state,
+
+ .epp_write_data = parport_ieee1284_epp_write_data,
+ .epp_read_data = parport_ieee1284_epp_read_data,
+ .epp_write_addr = parport_ieee1284_epp_write_addr,
+ .epp_read_addr = parport_ieee1284_epp_read_addr,
+
+ .ecp_write_data = parport_ieee1284_ecp_write_data,
+ .ecp_read_data = parport_ieee1284_ecp_read_data,
+ .ecp_write_addr = parport_ieee1284_ecp_write_addr,
+
+ .compat_write_data = parport_ieee1284_write_compat,
+ .nibble_read_data = parport_ieee1284_read_nibble,
+ .byte_read_data = parport_ieee1284_read_byte,
+
+ .owner = THIS_MODULE,
+};
+
+typedef struct {
+ struct list_head list;
+ struct parport *port;
+} Node;
+/* no locks, everything's serialized */
+static LIST_HEAD(port_list);
+
+static int __init init_one_port(struct sbus_dev *sdev)
+{
+ struct parport *p;
+ /* at least in theory there may be a "we don't dma" case */
+ struct parport_operations *ops;
+ void __iomem *base;
+ int irq, dma, err = 0, size;
+ struct bpp_regs __iomem *regs;
+ unsigned char value_tcr;
+ Node *node;
+
+ dprintk((KERN_DEBUG "init_one_port(%p): ranges, alloc_io, ", sdev));
+ node = kmalloc(sizeof(Node), GFP_KERNEL);
+ if (!node)
+ goto out0;
+
+ irq = sdev->irqs[0];
+ base = sbus_ioremap(&sdev->resource[0], 0,
+ sdev->reg_addrs[0].reg_size,
+ "sunbpp");
+ if (!base)
+ goto out1;
+
+ size = sdev->reg_addrs[0].reg_size;
+ dma = PARPORT_DMA_NONE;
+
+ dprintk(("alloc(ppops), "));
+ ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
+ if (!ops)
+ goto out2;
+
+ memcpy (ops, &parport_sunbpp_ops, sizeof (struct parport_operations));
+
+ dprintk(("register_port\n"));
+ if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
+ goto out3;
+
+ p->size = size;
+
+ dprintk((KERN_DEBUG "init_one_port: request_irq(%08x:%p:%x:%s:%p) ",
+ p->irq, parport_sunbpp_interrupt, SA_SHIRQ, p->name, p));
+ if ((err = request_irq(p->irq, parport_sunbpp_interrupt,
+ SA_SHIRQ, p->name, p)) != 0) {
+ dprintk(("ERROR %d\n", err));
+ goto out4;
+ }
+ dprintk(("OK\n"));
+ parport_sunbpp_enable_irq(p);
+
+ regs = (struct bpp_regs __iomem *)p->base;
+ dprintk((KERN_DEBUG "forward\n"));
+ value_tcr = sbus_readb(&regs->p_tcr);
+ value_tcr &= ~P_TCR_DIR;
+ sbus_writeb(value_tcr, &regs->p_tcr);
+
+ printk(KERN_INFO "%s: sunbpp at 0x%lx\n", p->name, p->base);
+ node->port = p;
+ list_add(&node->list, &port_list);
+ parport_announce_port (p);
+
+ return 1;
+
+out4:
+ parport_put_port(p);
+out3:
+ kfree(ops);
+out2:
+ sbus_iounmap(base, size);
+out1:
+ kfree(node);
+out0:
+ return err;
+}
+
+static int __init parport_sunbpp_init(void)
+{
+ struct sbus_bus *sbus;
+ struct sbus_dev *sdev;
+ int count = 0;
+
+ for_each_sbus(sbus) {
+ for_each_sbusdev(sdev, sbus) {
+ if (!strcmp(sdev->prom_name, "SUNW,bpp"))
+ count += init_one_port(sdev);
+ }
+ }
+ return count ? 0 : -ENODEV;
+}
+
+static void __exit parport_sunbpp_exit(void)
+{
+ while (!list_empty(&port_list)) {
+ Node *node = list_entry(port_list.next, Node, list);
+ struct parport *p = node->port;
+ struct parport_operations *ops = p->ops;
+ parport_remove_port(p);
+
+ if (p->irq != PARPORT_IRQ_NONE) {
+ parport_sunbpp_disable_irq(p);
+ free_irq(p->irq, p);
+ }
+ sbus_iounmap((void __iomem *)p->base, p->size);
+ parport_put_port(p);
+ kfree (ops);
+ list_del(&node->list);
+ kfree (node);
+ }
+}
+
+MODULE_AUTHOR("Derrick J Brashear");
+MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
+MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
+MODULE_LICENSE("GPL");
+
+module_init(parport_sunbpp_init)
+module_exit(parport_sunbpp_exit)
diff --git a/drivers/parport/probe.c b/drivers/parport/probe.c
new file mode 100644
index 000000000000..c94963145e17
--- /dev/null
+++ b/drivers/parport/probe.c
@@ -0,0 +1,224 @@
+/* $Id: parport_probe.c,v 1.1 1999/07/03 08:56:17 davem Exp $
+ * Parallel port device probing code
+ *
+ * Authors: Carsten Gross, carsten@sol.wohnheim.uni-ulm.de
+ * Philip Blundell <philb@gnu.org>
+ */
+
+#include <linux/module.h>
+#include <linux/parport.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <asm/uaccess.h>
+
+static struct {
+ char *token;
+ char *descr;
+} classes[] = {
+ { "", "Legacy device" },
+ { "PRINTER", "Printer" },
+ { "MODEM", "Modem" },
+ { "NET", "Network device" },
+ { "HDC", "Hard disk" },
+ { "PCMCIA", "PCMCIA" },
+ { "MEDIA", "Multimedia device" },
+ { "FDC", "Floppy disk" },
+ { "PORTS", "Ports" },
+ { "SCANNER", "Scanner" },
+ { "DIGICAM", "Digital camera" },
+ { "", "Unknown device" },
+ { "", "Unspecified" },
+ { "SCSIADAPTER", "SCSI adapter" },
+ { NULL, NULL }
+};
+
+static void pretty_print(struct parport *port, int device)
+{
+ struct parport_device_info *info = &port->probe_info[device + 1];
+
+ printk(KERN_INFO "%s", port->name);
+
+ if (device >= 0)
+ printk (" (addr %d)", device);
+
+ printk (": %s", classes[info->class].descr);
+ if (info->class)
+ printk(", %s %s", info->mfr, info->model);
+
+ printk("\n");
+}
+
+static char *strdup(char *str)
+{
+ int n = strlen(str)+1;
+ char *s = kmalloc(n, GFP_KERNEL);
+ if (!s) return NULL;
+ return strcpy(s, str);
+}
+
+static void parse_data(struct parport *port, int device, char *str)
+{
+ char *txt = kmalloc(strlen(str)+1, GFP_KERNEL);
+ char *p = txt, *q;
+ int guessed_class = PARPORT_CLASS_UNSPEC;
+ struct parport_device_info *info = &port->probe_info[device + 1];
+
+ if (!txt) {
+ printk(KERN_WARNING "%s probe: memory squeeze\n", port->name);
+ return;
+ }
+ strcpy(txt, str);
+ while (p) {
+ char *sep;
+ q = strchr(p, ';');
+ if (q) *q = 0;
+ sep = strchr(p, ':');
+ if (sep) {
+ char *u;
+ *(sep++) = 0;
+ /* Get rid of trailing blanks */
+ u = sep + strlen (sep) - 1;
+ while (u >= p && *u == ' ')
+ *u-- = '\0';
+ u = p;
+ while (*u) {
+ *u = toupper(*u);
+ u++;
+ }
+ if (!strcmp(p, "MFG") || !strcmp(p, "MANUFACTURER")) {
+ if (info->mfr)
+ kfree (info->mfr);
+ info->mfr = strdup(sep);
+ } else if (!strcmp(p, "MDL") || !strcmp(p, "MODEL")) {
+ if (info->model)
+ kfree (info->model);
+ info->model = strdup(sep);
+ } else if (!strcmp(p, "CLS") || !strcmp(p, "CLASS")) {
+ int i;
+ if (info->class_name)
+ kfree (info->class_name);
+ info->class_name = strdup(sep);
+ for (u = sep; *u; u++)
+ *u = toupper(*u);
+ for (i = 0; classes[i].token; i++) {
+ if (!strcmp(classes[i].token, sep)) {
+ info->class = i;
+ goto rock_on;
+ }
+ }
+ printk(KERN_WARNING "%s probe: warning, class '%s' not understood.\n", port->name, sep);
+ info->class = PARPORT_CLASS_OTHER;
+ } else if (!strcmp(p, "CMD") ||
+ !strcmp(p, "COMMAND SET")) {
+ if (info->cmdset)
+ kfree (info->cmdset);
+ info->cmdset = strdup(sep);
+ /* if it speaks printer language, it's
+ probably a printer */
+ if (strstr(sep, "PJL") || strstr(sep, "PCL"))
+ guessed_class = PARPORT_CLASS_PRINTER;
+ } else if (!strcmp(p, "DES") || !strcmp(p, "DESCRIPTION")) {
+ if (info->description)
+ kfree (info->description);
+ info->description = strdup(sep);
+ }
+ }
+ rock_on:
+ if (q) p = q+1; else p=NULL;
+ }
+
+ /* If the device didn't tell us its class, maybe we have managed to
+ guess one from the things it did say. */
+ if (info->class == PARPORT_CLASS_UNSPEC)
+ info->class = guessed_class;
+
+ pretty_print (port, device);
+
+ kfree(txt);
+}
+
+/* Get Std 1284 Device ID. */
+ssize_t parport_device_id (int devnum, char *buffer, size_t len)
+{
+ ssize_t retval = -ENXIO;
+ struct pardevice *dev = parport_open (devnum, "Device ID probe",
+ NULL, NULL, NULL, 0, NULL);
+ if (!dev)
+ return -ENXIO;
+
+ parport_claim_or_block (dev);
+
+ /* Negotiate to compatibility mode, and then to device ID mode.
+ * (This is in case we are already in device ID mode.) */
+ parport_negotiate (dev->port, IEEE1284_MODE_COMPAT);
+ retval = parport_negotiate (dev->port,
+ IEEE1284_MODE_NIBBLE | IEEE1284_DEVICEID);
+
+ if (!retval) {
+ int idlen;
+ unsigned char length[2];
+
+ /* First two bytes are MSB,LSB of inclusive length. */
+ retval = parport_read (dev->port, length, 2);
+
+ if (retval != 2) goto end_id;
+
+ idlen = (length[0] << 8) + length[1] - 2;
+ /*
+ * Check if the caller-allocated buffer is large enough
+ * otherwise bail out or there will be an at least off by one.
+ */
+ if (idlen + 1 < len)
+ len = idlen;
+ else {
+ retval = -EINVAL;
+ goto out;
+ }
+ retval = parport_read (dev->port, buffer, len);
+
+ if (retval != len)
+ printk (KERN_DEBUG "%s: only read %Zd of %Zd ID bytes\n",
+ dev->port->name, retval,
+ len);
+
+ /* Some printer manufacturers mistakenly believe that
+ the length field is supposed to be _exclusive_.
+ In addition, there are broken devices out there
+ that don't even finish off with a semi-colon. */
+ if (buffer[len - 1] != ';') {
+ ssize_t diff;
+ diff = parport_read (dev->port, buffer + len, 2);
+ retval += diff;
+
+ if (diff)
+ printk (KERN_DEBUG
+ "%s: device reported incorrect "
+ "length field (%d, should be %Zd)\n",
+ dev->port->name, idlen, retval);
+ else {
+ /* One semi-colon short of a device ID. */
+ buffer[len++] = ';';
+ printk (KERN_DEBUG "%s: faking semi-colon\n",
+ dev->port->name);
+
+ /* If we get here, I don't think we
+ need to worry about the possible
+ standard violation of having read
+ more than we were told to. The
+ device is non-compliant anyhow. */
+ }
+ }
+
+ end_id:
+ buffer[len] = '\0';
+ parport_negotiate (dev->port, IEEE1284_MODE_COMPAT);
+ }
+
+ if (retval > 2)
+ parse_data (dev->port, dev->daisy, buffer);
+
+out:
+ parport_release (dev);
+ parport_close (dev);
+ return retval;
+}
diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c
new file mode 100644
index 000000000000..cbe17184b9c7
--- /dev/null
+++ b/drivers/parport/procfs.c
@@ -0,0 +1,533 @@
+/* Sysctl interface for parport devices.
+ *
+ * Authors: David Campbell <campbell@torque.net>
+ * Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Philip Blundell <philb@gnu.org>
+ * Andrea Arcangeli
+ * Riccardo Facchetti <fizban@tin.it>
+ *
+ * based on work by Grant Guenther <grant@torque.net>
+ * and Philip Blundell
+ *
+ * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
+ */
+
+#include <linux/string.h>
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/parport.h>
+#include <linux/ctype.h>
+#include <linux/sysctl.h>
+
+#include <asm/uaccess.h>
+
+#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
+
+#define PARPORT_MIN_TIMESLICE_VALUE 1ul
+#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
+#define PARPORT_MIN_SPINTIME_VALUE 1
+#define PARPORT_MAX_SPINTIME_VALUE 1000
+
+static int do_active_device(ctl_table *table, int write, struct file *filp,
+ void __user *result, size_t *lenp, loff_t *ppos)
+{
+ struct parport *port = (struct parport *)table->extra1;
+ char buffer[256];
+ struct pardevice *dev;
+ int len = 0;
+
+ if (write) /* can't happen anyway */
+ return -EACCES;
+
+ if (*ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ for (dev = port->devices; dev ; dev = dev->next) {
+ if(dev == port->cad) {
+ len += sprintf(buffer, "%s\n", dev->name);
+ }
+ }
+
+ if(!len) {
+ len += sprintf(buffer, "%s\n", "none");
+ }
+
+ if (len > *lenp)
+ len = *lenp;
+ else
+ *lenp = len;
+
+ *ppos += len;
+
+ return copy_to_user(result, buffer, len) ? -EFAULT : 0;
+}
+
+#ifdef CONFIG_PARPORT_1284
+static int do_autoprobe(ctl_table *table, int write, struct file *filp,
+ void __user *result, size_t *lenp, loff_t *ppos)
+{
+ struct parport_device_info *info = table->extra2;
+ const char *str;
+ char buffer[256];
+ int len = 0;
+
+ if (write) /* permissions stop this */
+ return -EACCES;
+
+ if (*ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if ((str = info->class_name) != NULL)
+ len += sprintf (buffer + len, "CLASS:%s;\n", str);
+
+ if ((str = info->model) != NULL)
+ len += sprintf (buffer + len, "MODEL:%s;\n", str);
+
+ if ((str = info->mfr) != NULL)
+ len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
+
+ if ((str = info->description) != NULL)
+ len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
+
+ if ((str = info->cmdset) != NULL)
+ len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
+
+ if (len > *lenp)
+ len = *lenp;
+ else
+ *lenp = len;
+
+ *ppos += len;
+
+ return copy_to_user (result, buffer, len) ? -EFAULT : 0;
+}
+#endif /* IEEE1284.3 support. */
+
+static int do_hardware_base_addr (ctl_table *table, int write,
+ struct file *filp, void __user *result,
+ size_t *lenp, loff_t *ppos)
+{
+ struct parport *port = (struct parport *)table->extra1;
+ char buffer[20];
+ int len = 0;
+
+ if (*ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) /* permissions prevent this anyway */
+ return -EACCES;
+
+ len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
+
+ if (len > *lenp)
+ len = *lenp;
+ else
+ *lenp = len;
+
+ *ppos += len;
+
+ return copy_to_user(result, buffer, len) ? -EFAULT : 0;
+}
+
+static int do_hardware_irq (ctl_table *table, int write,
+ struct file *filp, void __user *result,
+ size_t *lenp, loff_t *ppos)
+{
+ struct parport *port = (struct parport *)table->extra1;
+ char buffer[20];
+ int len = 0;
+
+ if (*ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) /* permissions prevent this anyway */
+ return -EACCES;
+
+ len += sprintf (buffer, "%d\n", port->irq);
+
+ if (len > *lenp)
+ len = *lenp;
+ else
+ *lenp = len;
+
+ *ppos += len;
+
+ return copy_to_user(result, buffer, len) ? -EFAULT : 0;
+}
+
+static int do_hardware_dma (ctl_table *table, int write,
+ struct file *filp, void __user *result,
+ size_t *lenp, loff_t *ppos)
+{
+ struct parport *port = (struct parport *)table->extra1;
+ char buffer[20];
+ int len = 0;
+
+ if (*ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) /* permissions prevent this anyway */
+ return -EACCES;
+
+ len += sprintf (buffer, "%d\n", port->dma);
+
+ if (len > *lenp)
+ len = *lenp;
+ else
+ *lenp = len;
+
+ *ppos += len;
+
+ return copy_to_user(result, buffer, len) ? -EFAULT : 0;
+}
+
+static int do_hardware_modes (ctl_table *table, int write,
+ struct file *filp, void __user *result,
+ size_t *lenp, loff_t *ppos)
+{
+ struct parport *port = (struct parport *)table->extra1;
+ char buffer[40];
+ int len = 0;
+
+ if (*ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) /* permissions prevent this anyway */
+ return -EACCES;
+
+ {
+#define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
+ int f = 0;
+ printmode(PCSPP);
+ printmode(TRISTATE);
+ printmode(COMPAT);
+ printmode(EPP);
+ printmode(ECP);
+ printmode(DMA);
+#undef printmode
+ }
+ buffer[len++] = '\n';
+
+ if (len > *lenp)
+ len = *lenp;
+ else
+ *lenp = len;
+
+ *ppos += len;
+
+ return copy_to_user(result, buffer, len) ? -EFAULT : 0;
+}
+
+#define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child }
+#define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \
+ NULL, 0, 0555, child }
+#define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child }
+#define PARPORT_DEVICES_ROOT_DIR { DEV_PARPORT_DEVICES, "devices", \
+ NULL, 0, 0555, NULL }
+
+static const unsigned long parport_min_timeslice_value =
+PARPORT_MIN_TIMESLICE_VALUE;
+
+static const unsigned long parport_max_timeslice_value =
+PARPORT_MAX_TIMESLICE_VALUE;
+
+static const int parport_min_spintime_value =
+PARPORT_MIN_SPINTIME_VALUE;
+
+static const int parport_max_spintime_value =
+PARPORT_MAX_SPINTIME_VALUE;
+
+
+struct parport_sysctl_table {
+ struct ctl_table_header *sysctl_header;
+ ctl_table vars[12];
+ ctl_table device_dir[2];
+ ctl_table port_dir[2];
+ ctl_table parport_dir[2];
+ ctl_table dev_dir[2];
+};
+
+static const struct parport_sysctl_table parport_sysctl_template = {
+ NULL,
+ {
+ { DEV_PARPORT_SPINTIME, "spintime",
+ NULL, sizeof(int), 0644, NULL,
+ &proc_dointvec_minmax, NULL, NULL,
+ (void*) &parport_min_spintime_value,
+ (void*) &parport_max_spintime_value },
+ { DEV_PARPORT_BASE_ADDR, "base-addr",
+ NULL, 0, 0444, NULL,
+ &do_hardware_base_addr },
+ { DEV_PARPORT_IRQ, "irq",
+ NULL, 0, 0444, NULL,
+ &do_hardware_irq },
+ { DEV_PARPORT_DMA, "dma",
+ NULL, 0, 0444, NULL,
+ &do_hardware_dma },
+ { DEV_PARPORT_MODES, "modes",
+ NULL, 0, 0444, NULL,
+ &do_hardware_modes },
+ PARPORT_DEVICES_ROOT_DIR,
+#ifdef CONFIG_PARPORT_1284
+ { DEV_PARPORT_AUTOPROBE, "autoprobe",
+ NULL, 0, 0444, NULL,
+ &do_autoprobe },
+ { DEV_PARPORT_AUTOPROBE + 1, "autoprobe0",
+ NULL, 0, 0444, NULL,
+ &do_autoprobe },
+ { DEV_PARPORT_AUTOPROBE + 2, "autoprobe1",
+ NULL, 0, 0444, NULL,
+ &do_autoprobe },
+ { DEV_PARPORT_AUTOPROBE + 3, "autoprobe2",
+ NULL, 0, 0444, NULL,
+ &do_autoprobe },
+ { DEV_PARPORT_AUTOPROBE + 4, "autoprobe3",
+ NULL, 0, 0444, NULL,
+ &do_autoprobe },
+#endif /* IEEE 1284 support */
+ {0}
+ },
+ { {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL,
+ &do_active_device }, {0}},
+ { PARPORT_PORT_DIR(NULL), {0}},
+ { PARPORT_PARPORT_DIR(NULL), {0}},
+ { PARPORT_DEV_DIR(NULL), {0}}
+};
+
+struct parport_device_sysctl_table
+{
+ struct ctl_table_header *sysctl_header;
+ ctl_table vars[2];
+ ctl_table device_dir[2];
+ ctl_table devices_root_dir[2];
+ ctl_table port_dir[2];
+ ctl_table parport_dir[2];
+ ctl_table dev_dir[2];
+};
+
+static const struct parport_device_sysctl_table
+parport_device_sysctl_template = {
+ NULL,
+ {
+ { DEV_PARPORT_DEVICE_TIMESLICE, "timeslice",
+ NULL, sizeof(int), 0644, NULL,
+ &proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
+ (void*) &parport_min_timeslice_value,
+ (void*) &parport_max_timeslice_value },
+ },
+ { {0, NULL, NULL, 0, 0555, NULL}, {0}},
+ { PARPORT_DEVICES_ROOT_DIR, {0}},
+ { PARPORT_PORT_DIR(NULL), {0}},
+ { PARPORT_PARPORT_DIR(NULL), {0}},
+ { PARPORT_DEV_DIR(NULL), {0}}
+};
+
+struct parport_default_sysctl_table
+{
+ struct ctl_table_header *sysctl_header;
+ ctl_table vars[3];
+ ctl_table default_dir[2];
+ ctl_table parport_dir[2];
+ ctl_table dev_dir[2];
+};
+
+extern unsigned long parport_default_timeslice;
+extern int parport_default_spintime;
+
+static struct parport_default_sysctl_table
+parport_default_sysctl_table = {
+ NULL,
+ {
+ { DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice",
+ &parport_default_timeslice,
+ sizeof(parport_default_timeslice), 0644, NULL,
+ &proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
+ (void*) &parport_min_timeslice_value,
+ (void*) &parport_max_timeslice_value },
+ { DEV_PARPORT_DEFAULT_SPINTIME, "spintime",
+ &parport_default_spintime,
+ sizeof(parport_default_spintime), 0644, NULL,
+ &proc_dointvec_minmax, NULL, NULL,
+ (void*) &parport_min_spintime_value,
+ (void*) &parport_max_spintime_value },
+ {0}
+ },
+ { { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555,
+ parport_default_sysctl_table.vars },{0}},
+ {
+ PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
+ {0}},
+ { PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}}
+};
+
+
+int parport_proc_register(struct parport *port)
+{
+ struct parport_sysctl_table *t;
+ int i;
+
+ t = kmalloc(sizeof(*t), GFP_KERNEL);
+ if (t == NULL)
+ return -ENOMEM;
+ memcpy(t, &parport_sysctl_template, sizeof(*t));
+
+ t->device_dir[0].extra1 = port;
+
+ for (i = 0; i < 8; i++)
+ t->vars[i].extra1 = port;
+
+ t->vars[0].data = &port->spintime;
+ t->vars[5].child = t->device_dir;
+
+ for (i = 0; i < 5; i++)
+ t->vars[6 + i].extra2 = &port->probe_info[i];
+
+ t->port_dir[0].procname = port->name;
+ t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
+
+ t->port_dir[0].child = t->vars;
+ t->parport_dir[0].child = t->port_dir;
+ t->dev_dir[0].child = t->parport_dir;
+
+ t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
+ if (t->sysctl_header == NULL) {
+ kfree(t);
+ t = NULL;
+ }
+ port->sysctl_table = t;
+ return 0;
+}
+
+int parport_proc_unregister(struct parport *port)
+{
+ if (port->sysctl_table) {
+ struct parport_sysctl_table *t = port->sysctl_table;
+ port->sysctl_table = NULL;
+ unregister_sysctl_table(t->sysctl_header);
+ kfree(t);
+ }
+ return 0;
+}
+
+int parport_device_proc_register(struct pardevice *device)
+{
+ struct parport_device_sysctl_table *t;
+ struct parport * port = device->port;
+
+ t = kmalloc(sizeof(*t), GFP_KERNEL);
+ if (t == NULL)
+ return -ENOMEM;
+ memcpy(t, &parport_device_sysctl_template, sizeof(*t));
+
+ t->dev_dir[0].child = t->parport_dir;
+ t->parport_dir[0].child = t->port_dir;
+ t->port_dir[0].procname = port->name;
+ t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
+ t->port_dir[0].child = t->devices_root_dir;
+ t->devices_root_dir[0].child = t->device_dir;
+
+#ifdef CONFIG_PARPORT_1284
+
+ t->device_dir[0].ctl_name =
+ parport_device_num(port->number, port->muxport,
+ device->daisy)
+ + 1; /* nb 0 isn't legal here */
+
+#else /* No IEEE 1284 support */
+
+ /* parport_device_num isn't available. */
+ t->device_dir[0].ctl_name = 1;
+
+#endif /* IEEE 1284 support or not */
+
+ t->device_dir[0].procname = device->name;
+ t->device_dir[0].extra1 = device;
+ t->device_dir[0].child = t->vars;
+ t->vars[0].data = &device->timeslice;
+
+ t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
+ if (t->sysctl_header == NULL) {
+ kfree(t);
+ t = NULL;
+ }
+ device->sysctl_table = t;
+ return 0;
+}
+
+int parport_device_proc_unregister(struct pardevice *device)
+{
+ if (device->sysctl_table) {
+ struct parport_device_sysctl_table *t = device->sysctl_table;
+ device->sysctl_table = NULL;
+ unregister_sysctl_table(t->sysctl_header);
+ kfree(t);
+ }
+ return 0;
+}
+
+static int __init parport_default_proc_register(void)
+{
+ parport_default_sysctl_table.sysctl_header =
+ register_sysctl_table(parport_default_sysctl_table.dev_dir, 0);
+ return 0;
+}
+
+static void __exit parport_default_proc_unregister(void)
+{
+ if (parport_default_sysctl_table.sysctl_header) {
+ unregister_sysctl_table(parport_default_sysctl_table.
+ sysctl_header);
+ parport_default_sysctl_table.sysctl_header = NULL;
+ }
+}
+
+#else /* no sysctl or no procfs*/
+
+int parport_proc_register(struct parport *pp)
+{
+ return 0;
+}
+
+int parport_proc_unregister(struct parport *pp)
+{
+ return 0;
+}
+
+int parport_device_proc_register(struct pardevice *device)
+{
+ return 0;
+}
+
+int parport_device_proc_unregister(struct pardevice *device)
+{
+ return 0;
+}
+
+static int __init parport_default_proc_register (void)
+{
+ return 0;
+}
+
+static void __exit parport_default_proc_unregister (void)
+{
+}
+#endif
+
+module_init(parport_default_proc_register)
+module_exit(parport_default_proc_unregister)
diff --git a/drivers/parport/share.c b/drivers/parport/share.c
new file mode 100644
index 000000000000..ae7becf7efa5
--- /dev/null
+++ b/drivers/parport/share.c
@@ -0,0 +1,1014 @@
+/* $Id: parport_share.c,v 1.15 1998/01/11 12:06:17 philip Exp $
+ * Parallel-port resource manager code.
+ *
+ * Authors: David Campbell <campbell@tirian.che.curtin.edu.au>
+ * Tim Waugh <tim@cyberelk.demon.co.uk>
+ * Jose Renau <renau@acm.org>
+ * Philip Blundell <philb@gnu.org>
+ * Andrea Arcangeli
+ *
+ * based on work by Grant Guenther <grant@torque.net>
+ * and Philip Blundell
+ *
+ * Any part of this program may be used in documents licensed under
+ * the GNU Free Documentation License, Version 1.1 or any later version
+ * published by the Free Software Foundation.
+ */
+
+#undef PARPORT_DEBUG_SHARING /* undef for production */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/threads.h>
+#include <linux/parport.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/kmod.h>
+
+#include <linux/spinlock.h>
+#include <asm/irq.h>
+
+#undef PARPORT_PARANOID
+
+#define PARPORT_DEFAULT_TIMESLICE (HZ/5)
+
+unsigned long parport_default_timeslice = PARPORT_DEFAULT_TIMESLICE;
+int parport_default_spintime = DEFAULT_SPIN_TIME;
+
+static LIST_HEAD(portlist);
+static DEFINE_SPINLOCK(parportlist_lock);
+
+/* list of all allocated ports, sorted by ->number */
+static LIST_HEAD(all_ports);
+static DEFINE_SPINLOCK(full_list_lock);
+
+static LIST_HEAD(drivers);
+
+static DECLARE_MUTEX(registration_lock);
+
+/* What you can do to a port that's gone away.. */
+static void dead_write_lines (struct parport *p, unsigned char b){}
+static unsigned char dead_read_lines (struct parport *p) { return 0; }
+static unsigned char dead_frob_lines (struct parport *p, unsigned char b,
+ unsigned char c) { return 0; }
+static void dead_onearg (struct parport *p){}
+static void dead_initstate (struct pardevice *d, struct parport_state *s) { }
+static void dead_state (struct parport *p, struct parport_state *s) { }
+static size_t dead_write (struct parport *p, const void *b, size_t l, int f)
+{ return 0; }
+static size_t dead_read (struct parport *p, void *b, size_t l, int f)
+{ return 0; }
+static struct parport_operations dead_ops = {
+ .write_data = dead_write_lines, /* data */
+ .read_data = dead_read_lines,
+
+ .write_control = dead_write_lines, /* control */
+ .read_control = dead_read_lines,
+ .frob_control = dead_frob_lines,
+
+ .read_status = dead_read_lines, /* status */
+
+ .enable_irq = dead_onearg, /* enable_irq */
+ .disable_irq = dead_onearg, /* disable_irq */
+
+ .data_forward = dead_onearg, /* data_forward */
+ .data_reverse = dead_onearg, /* data_reverse */
+
+ .init_state = dead_initstate, /* init_state */
+ .save_state = dead_state,
+ .restore_state = dead_state,
+
+ .epp_write_data = dead_write, /* epp */
+ .epp_read_data = dead_read,
+ .epp_write_addr = dead_write,
+ .epp_read_addr = dead_read,
+
+ .ecp_write_data = dead_write, /* ecp */
+ .ecp_read_data = dead_read,
+ .ecp_write_addr = dead_write,
+
+ .compat_write_data = dead_write, /* compat */
+ .nibble_read_data = dead_read, /* nibble */
+ .byte_read_data = dead_read, /* byte */
+
+ .owner = NULL,
+};
+
+/* Call attach(port) for each registered driver. */
+static void attach_driver_chain(struct parport *port)
+{
+ /* caller has exclusive registration_lock */
+ struct parport_driver *drv;
+ list_for_each_entry(drv, &drivers, list)
+ drv->attach(port);
+}
+
+/* Call detach(port) for each registered driver. */
+static void detach_driver_chain(struct parport *port)
+{
+ struct parport_driver *drv;
+ /* caller has exclusive registration_lock */
+ list_for_each_entry(drv, &drivers, list)
+ drv->detach (port);
+}
+
+/* Ask kmod for some lowlevel drivers. */
+static void get_lowlevel_driver (void)
+{
+ /* There is no actual module called this: you should set
+ * up an alias for modutils. */
+ request_module ("parport_lowlevel");
+}
+
+/**
+ * parport_register_driver - register a parallel port device driver
+ * @drv: structure describing the driver
+ *
+ * This can be called by a parallel port device driver in order
+ * to receive notifications about ports being found in the
+ * system, as well as ports no longer available.
+ *
+ * The @drv structure is allocated by the caller and must not be
+ * deallocated until after calling parport_unregister_driver().
+ *
+ * The driver's attach() function may block. The port that
+ * attach() is given will be valid for the duration of the
+ * callback, but if the driver wants to take a copy of the
+ * pointer it must call parport_get_port() to do so. Calling
+ * parport_register_device() on that port will do this for you.
+ *
+ * The driver's detach() function may block. The port that
+ * detach() is given will be valid for the duration of the
+ * callback, but if the driver wants to take a copy of the
+ * pointer it must call parport_get_port() to do so.
+ *
+ * Returns 0 on success. Currently it always succeeds.
+ **/
+
+int parport_register_driver (struct parport_driver *drv)
+{
+ struct parport *port;
+
+ if (list_empty(&portlist))
+ get_lowlevel_driver ();
+
+ down(&registration_lock);
+ list_for_each_entry(port, &portlist, list)
+ drv->attach(port);
+ list_add(&drv->list, &drivers);
+ up(&registration_lock);
+
+ return 0;
+}
+
+/**
+ * parport_unregister_driver - deregister a parallel port device driver
+ * @drv: structure describing the driver that was given to
+ * parport_register_driver()
+ *
+ * This should be called by a parallel port device driver that
+ * has registered itself using parport_register_driver() when it
+ * is about to be unloaded.
+ *
+ * When it returns, the driver's attach() routine will no longer
+ * be called, and for each port that attach() was called for, the
+ * detach() routine will have been called.
+ *
+ * All the driver's attach() and detach() calls are guaranteed to have
+ * finished by the time this function returns.
+ **/
+
+void parport_unregister_driver (struct parport_driver *drv)
+{
+ struct parport *port;
+
+ down(&registration_lock);
+ list_del_init(&drv->list);
+ list_for_each_entry(port, &portlist, list)
+ drv->detach(port);
+ up(&registration_lock);
+}
+
+static void free_port (struct parport *port)
+{
+ int d;
+ spin_lock(&full_list_lock);
+ list_del(&port->full_list);
+ spin_unlock(&full_list_lock);
+ for (d = 0; d < 5; d++) {
+ if (port->probe_info[d].class_name)
+ kfree (port->probe_info[d].class_name);
+ if (port->probe_info[d].mfr)
+ kfree (port->probe_info[d].mfr);
+ if (port->probe_info[d].model)
+ kfree (port->probe_info[d].model);
+ if (port->probe_info[d].cmdset)
+ kfree (port->probe_info[d].cmdset);
+ if (port->probe_info[d].description)
+ kfree (port->probe_info[d].description);
+ }
+
+ kfree(port->name);
+ kfree(port);
+}
+
+/**
+ * parport_get_port - increment a port's reference count
+ * @port: the port
+ *
+ * This ensure's that a struct parport pointer remains valid
+ * until the matching parport_put_port() call.
+ **/
+
+struct parport *parport_get_port (struct parport *port)
+{
+ atomic_inc (&port->ref_count);
+ return port;
+}
+
+/**
+ * parport_put_port - decrement a port's reference count
+ * @port: the port
+ *
+ * This should be called once for each call to parport_get_port(),
+ * once the port is no longer needed.
+ **/
+
+void parport_put_port (struct parport *port)
+{
+ if (atomic_dec_and_test (&port->ref_count))
+ /* Can destroy it now. */
+ free_port (port);
+
+ return;
+}
+
+/**
+ * parport_register_port - register a parallel port
+ * @base: base I/O address
+ * @irq: IRQ line
+ * @dma: DMA channel
+ * @ops: pointer to the port driver's port operations structure
+ *
+ * When a parallel port (lowlevel) driver finds a port that
+ * should be made available to parallel port device drivers, it
+ * should call parport_register_port(). The @base, @irq, and
+ * @dma parameters are for the convenience of port drivers, and
+ * for ports where they aren't meaningful needn't be set to
+ * anything special. They can be altered afterwards by adjusting
+ * the relevant members of the parport structure that is returned
+ * and represents the port. They should not be tampered with
+ * after calling parport_announce_port, however.
+ *
+ * If there are parallel port device drivers in the system that
+ * have registered themselves using parport_register_driver(),
+ * they are not told about the port at this time; that is done by
+ * parport_announce_port().
+ *
+ * The @ops structure is allocated by the caller, and must not be
+ * deallocated before calling parport_remove_port().
+ *
+ * If there is no memory to allocate a new parport structure,
+ * this function will return %NULL.
+ **/
+
+struct parport *parport_register_port(unsigned long base, int irq, int dma,
+ struct parport_operations *ops)
+{
+ struct list_head *l;
+ struct parport *tmp;
+ int num;
+ int device;
+ char *name;
+
+ tmp = kmalloc(sizeof(struct parport), GFP_KERNEL);
+ if (!tmp) {
+ printk(KERN_WARNING "parport: memory squeeze\n");
+ return NULL;
+ }
+
+ /* Init our structure */
+ memset(tmp, 0, sizeof(struct parport));
+ tmp->base = base;
+ tmp->irq = irq;
+ tmp->dma = dma;
+ tmp->muxport = tmp->daisy = tmp->muxsel = -1;
+ tmp->modes = 0;
+ INIT_LIST_HEAD(&tmp->list);
+ tmp->devices = tmp->cad = NULL;
+ tmp->flags = 0;
+ tmp->ops = ops;
+ tmp->physport = tmp;
+ memset (tmp->probe_info, 0, 5 * sizeof (struct parport_device_info));
+ rwlock_init(&tmp->cad_lock);
+ spin_lock_init(&tmp->waitlist_lock);
+ spin_lock_init(&tmp->pardevice_lock);
+ tmp->ieee1284.mode = IEEE1284_MODE_COMPAT;
+ tmp->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
+ init_MUTEX_LOCKED (&tmp->ieee1284.irq); /* actually a semaphore at 0 */
+ tmp->spintime = parport_default_spintime;
+ atomic_set (&tmp->ref_count, 1);
+ INIT_LIST_HEAD(&tmp->full_list);
+
+ name = kmalloc(15, GFP_KERNEL);
+ if (!name) {
+ printk(KERN_ERR "parport: memory squeeze\n");
+ kfree(tmp);
+ return NULL;
+ }
+ /* Search for the lowest free parport number. */
+
+ spin_lock(&full_list_lock);
+ for (l = all_ports.next, num = 0; l != &all_ports; l = l->next, num++) {
+ struct parport *p = list_entry(l, struct parport, full_list);
+ if (p->number != num)
+ break;
+ }
+ tmp->portnum = tmp->number = num;
+ list_add_tail(&tmp->full_list, l);
+ spin_unlock(&full_list_lock);
+
+ /*
+ * Now that the portnum is known finish doing the Init.
+ */
+ sprintf(name, "parport%d", tmp->portnum = tmp->number);
+ tmp->name = name;
+
+ for (device = 0; device < 5; device++)
+ /* assume the worst */
+ tmp->probe_info[device].class = PARPORT_CLASS_LEGACY;
+
+ tmp->waithead = tmp->waittail = NULL;
+
+ return tmp;
+}
+
+/**
+ * parport_announce_port - tell device drivers about a parallel port
+ * @port: parallel port to announce
+ *
+ * After a port driver has registered a parallel port with
+ * parport_register_port, and performed any necessary
+ * initialisation or adjustments, it should call
+ * parport_announce_port() in order to notify all device drivers
+ * that have called parport_register_driver(). Their attach()
+ * functions will be called, with @port as the parameter.
+ **/
+
+void parport_announce_port (struct parport *port)
+{
+ int i;
+
+#ifdef CONFIG_PARPORT_1284
+ /* Analyse the IEEE1284.3 topology of the port. */
+ parport_daisy_init(port);
+#endif
+
+ parport_proc_register(port);
+ down(&registration_lock);
+ spin_lock_irq(&parportlist_lock);
+ list_add_tail(&port->list, &portlist);
+ for (i = 1; i < 3; i++) {
+ struct parport *slave = port->slaves[i-1];
+ if (slave)
+ list_add_tail(&slave->list, &portlist);
+ }
+ spin_unlock_irq(&parportlist_lock);
+
+ /* Let drivers know that new port(s) has arrived. */
+ attach_driver_chain (port);
+ for (i = 1; i < 3; i++) {
+ struct parport *slave = port->slaves[i-1];
+ if (slave)
+ attach_driver_chain(slave);
+ }
+ up(&registration_lock);
+}
+
+/**
+ * parport_remove_port - deregister a parallel port
+ * @port: parallel port to deregister
+ *
+ * When a parallel port driver is forcibly unloaded, or a
+ * parallel port becomes inaccessible, the port driver must call
+ * this function in order to deal with device drivers that still
+ * want to use it.
+ *
+ * The parport structure associated with the port has its
+ * operations structure replaced with one containing 'null'
+ * operations that return errors or just don't do anything.
+ *
+ * Any drivers that have registered themselves using
+ * parport_register_driver() are notified that the port is no
+ * longer accessible by having their detach() routines called
+ * with @port as the parameter.
+ **/
+
+void parport_remove_port(struct parport *port)
+{
+ int i;
+
+ down(&registration_lock);
+
+ /* Spread the word. */
+ detach_driver_chain (port);
+
+#ifdef CONFIG_PARPORT_1284
+ /* Forget the IEEE1284.3 topology of the port. */
+ parport_daisy_fini(port);
+ for (i = 1; i < 3; i++) {
+ struct parport *slave = port->slaves[i-1];
+ if (!slave)
+ continue;
+ detach_driver_chain(slave);
+ parport_daisy_fini(slave);
+ }
+#endif
+
+ port->ops = &dead_ops;
+ spin_lock(&parportlist_lock);
+ list_del_init(&port->list);
+ for (i = 1; i < 3; i++) {
+ struct parport *slave = port->slaves[i-1];
+ if (slave)
+ list_del_init(&slave->list);
+ }
+ spin_unlock(&parportlist_lock);
+
+ up(&registration_lock);
+
+ parport_proc_unregister(port);
+
+ for (i = 1; i < 3; i++) {
+ struct parport *slave = port->slaves[i-1];
+ if (slave)
+ parport_put_port(slave);
+ }
+}
+
+/**
+ * parport_register_device - register a device on a parallel port
+ * @port: port to which the device is attached
+ * @name: a name to refer to the device
+ * @pf: preemption callback
+ * @kf: kick callback (wake-up)
+ * @irq_func: interrupt handler
+ * @flags: registration flags
+ * @handle: data for callback functions
+ *
+ * This function, called by parallel port device drivers,
+ * declares that a device is connected to a port, and tells the
+ * system all it needs to know.
+ *
+ * The @name is allocated by the caller and must not be
+ * deallocated until the caller calls @parport_unregister_device
+ * for that device.
+ *
+ * The preemption callback function, @pf, is called when this
+ * device driver has claimed access to the port but another
+ * device driver wants to use it. It is given @handle as its
+ * parameter, and should return zero if it is willing for the
+ * system to release the port to another driver on its behalf.
+ * If it wants to keep control of the port it should return
+ * non-zero, and no action will be taken. It is good manners for
+ * the driver to try to release the port at the earliest
+ * opportunity after its preemption callback rejects a preemption
+ * attempt. Note that if a preemption callback is happy for
+ * preemption to go ahead, there is no need to release the port;
+ * it is done automatically. This function may not block, as it
+ * may be called from interrupt context. If the device driver
+ * does not support preemption, @pf can be %NULL.
+ *
+ * The wake-up ("kick") callback function, @kf, is called when
+ * the port is available to be claimed for exclusive access; that
+ * is, parport_claim() is guaranteed to succeed when called from
+ * inside the wake-up callback function. If the driver wants to
+ * claim the port it should do so; otherwise, it need not take
+ * any action. This function may not block, as it may be called
+ * from interrupt context. If the device driver does not want to
+ * be explicitly invited to claim the port in this way, @kf can
+ * be %NULL.
+ *
+ * The interrupt handler, @irq_func, is called when an interrupt
+ * arrives from the parallel port. Note that if a device driver
+ * wants to use interrupts it should use parport_enable_irq(),
+ * and can also check the irq member of the parport structure
+ * representing the port.
+ *
+ * The parallel port (lowlevel) driver is the one that has called
+ * request_irq() and whose interrupt handler is called first.
+ * This handler does whatever needs to be done to the hardware to
+ * acknowledge the interrupt (for PC-style ports there is nothing
+ * special to be done). It then tells the IEEE 1284 code about
+ * the interrupt, which may involve reacting to an IEEE 1284
+ * event depending on the current IEEE 1284 phase. After this,
+ * it calls @irq_func. Needless to say, @irq_func will be called
+ * from interrupt context, and may not block.
+ *
+ * The %PARPORT_DEV_EXCL flag is for preventing port sharing, and
+ * so should only be used when sharing the port with other device
+ * drivers is impossible and would lead to incorrect behaviour.
+ * Use it sparingly! Normally, @flags will be zero.
+ *
+ * This function returns a pointer to a structure that represents
+ * the device on the port, or %NULL if there is not enough memory
+ * to allocate space for that structure.
+ **/
+
+struct pardevice *
+parport_register_device(struct parport *port, const char *name,
+ int (*pf)(void *), void (*kf)(void *),
+ void (*irq_func)(int, void *, struct pt_regs *),
+ int flags, void *handle)
+{
+ struct pardevice *tmp;
+
+ if (port->physport->flags & PARPORT_FLAG_EXCL) {
+ /* An exclusive device is registered. */
+ printk (KERN_DEBUG "%s: no more devices allowed\n",
+ port->name);
+ return NULL;
+ }
+
+ if (flags & PARPORT_DEV_LURK) {
+ if (!pf || !kf) {
+ printk(KERN_INFO "%s: refused to register lurking device (%s) without callbacks\n", port->name, name);
+ return NULL;
+ }
+ }
+
+ /* We up our own module reference count, and that of the port
+ on which a device is to be registered, to ensure that
+ neither of us gets unloaded while we sleep in (e.g.)
+ kmalloc.
+ */
+ if (!try_module_get(port->ops->owner)) {
+ return NULL;
+ }
+
+ parport_get_port (port);
+
+ tmp = kmalloc(sizeof(struct pardevice), GFP_KERNEL);
+ if (tmp == NULL) {
+ printk(KERN_WARNING "%s: memory squeeze, couldn't register %s.\n", port->name, name);
+ goto out;
+ }
+
+ tmp->state = kmalloc(sizeof(struct parport_state), GFP_KERNEL);
+ if (tmp->state == NULL) {
+ printk(KERN_WARNING "%s: memory squeeze, couldn't register %s.\n", port->name, name);
+ goto out_free_pardevice;
+ }
+
+ tmp->name = name;
+ tmp->port = port;
+ tmp->daisy = -1;
+ tmp->preempt = pf;
+ tmp->wakeup = kf;
+ tmp->private = handle;
+ tmp->flags = flags;
+ tmp->irq_func = irq_func;
+ tmp->waiting = 0;
+ tmp->timeout = 5 * HZ;
+
+ /* Chain this onto the list */
+ tmp->prev = NULL;
+ /*
+ * This function must not run from an irq handler so we don' t need
+ * to clear irq on the local CPU. -arca
+ */
+ spin_lock(&port->physport->pardevice_lock);
+
+ if (flags & PARPORT_DEV_EXCL) {
+ if (port->physport->devices) {
+ spin_unlock (&port->physport->pardevice_lock);
+ printk (KERN_DEBUG
+ "%s: cannot grant exclusive access for "
+ "device %s\n", port->name, name);
+ goto out_free_all;
+ }
+ port->flags |= PARPORT_FLAG_EXCL;
+ }
+
+ tmp->next = port->physport->devices;
+ wmb(); /* Make sure that tmp->next is written before it's
+ added to the list; see comments marked 'no locking
+ required' */
+ if (port->physport->devices)
+ port->physport->devices->prev = tmp;
+ port->physport->devices = tmp;
+ spin_unlock(&port->physport->pardevice_lock);
+
+ init_waitqueue_head(&tmp->wait_q);
+ tmp->timeslice = parport_default_timeslice;
+ tmp->waitnext = tmp->waitprev = NULL;
+
+ /*
+ * This has to be run as last thing since init_state may need other
+ * pardevice fields. -arca
+ */
+ port->ops->init_state(tmp, tmp->state);
+ parport_device_proc_register(tmp);
+ return tmp;
+
+ out_free_all:
+ kfree (tmp->state);
+ out_free_pardevice:
+ kfree (tmp);
+ out:
+ parport_put_port (port);
+ module_put(port->ops->owner);
+
+ return NULL;
+}
+
+/**
+ * parport_unregister_device - deregister a device on a parallel port
+ * @dev: pointer to structure representing device
+ *
+ * This undoes the effect of parport_register_device().
+ **/
+
+void parport_unregister_device(struct pardevice *dev)
+{
+ struct parport *port;
+
+#ifdef PARPORT_PARANOID
+ if (dev == NULL) {
+ printk(KERN_ERR "parport_unregister_device: passed NULL\n");
+ return;
+ }
+#endif
+
+ parport_device_proc_unregister(dev);
+
+ port = dev->port->physport;
+
+ if (port->cad == dev) {
+ printk(KERN_DEBUG "%s: %s forgot to release port\n",
+ port->name, dev->name);
+ parport_release (dev);
+ }
+
+ spin_lock(&port->pardevice_lock);
+ if (dev->next)
+ dev->next->prev = dev->prev;
+ if (dev->prev)
+ dev->prev->next = dev->next;
+ else
+ port->devices = dev->next;
+
+ if (dev->flags & PARPORT_DEV_EXCL)
+ port->flags &= ~PARPORT_FLAG_EXCL;
+
+ spin_unlock(&port->pardevice_lock);
+
+ /* Make sure we haven't left any pointers around in the wait
+ * list. */
+ spin_lock (&port->waitlist_lock);
+ if (dev->waitprev || dev->waitnext || port->waithead == dev) {
+ if (dev->waitprev)
+ dev->waitprev->waitnext = dev->waitnext;
+ else
+ port->waithead = dev->waitnext;
+ if (dev->waitnext)
+ dev->waitnext->waitprev = dev->waitprev;
+ else
+ port->waittail = dev->waitprev;
+ }
+ spin_unlock (&port->waitlist_lock);
+
+ kfree(dev->state);
+ kfree(dev);
+
+ module_put(port->ops->owner);
+ parport_put_port (port);
+}
+
+/**
+ * parport_find_number - find a parallel port by number
+ * @number: parallel port number
+ *
+ * This returns the parallel port with the specified number, or
+ * %NULL if there is none.
+ *
+ * There is an implicit parport_get_port() done already; to throw
+ * away the reference to the port that parport_find_number()
+ * gives you, use parport_put_port().
+ */
+
+struct parport *parport_find_number (int number)
+{
+ struct parport *port, *result = NULL;
+
+ if (list_empty(&portlist))
+ get_lowlevel_driver ();
+
+ spin_lock (&parportlist_lock);
+ list_for_each_entry(port, &portlist, list) {
+ if (port->number == number) {
+ result = parport_get_port (port);
+ break;
+ }
+ }
+ spin_unlock (&parportlist_lock);
+ return result;
+}
+
+/**
+ * parport_find_base - find a parallel port by base address
+ * @base: base I/O address
+ *
+ * This returns the parallel port with the specified base
+ * address, or %NULL if there is none.
+ *
+ * There is an implicit parport_get_port() done already; to throw
+ * away the reference to the port that parport_find_base()
+ * gives you, use parport_put_port().
+ */
+
+struct parport *parport_find_base (unsigned long base)
+{
+ struct parport *port, *result = NULL;
+
+ if (list_empty(&portlist))
+ get_lowlevel_driver ();
+
+ spin_lock (&parportlist_lock);
+ list_for_each_entry(port, &portlist, list) {
+ if (port->base == base) {
+ result = parport_get_port (port);
+ break;
+ }
+ }
+ spin_unlock (&parportlist_lock);
+ return result;
+}
+
+/**
+ * parport_claim - claim access to a parallel port device
+ * @dev: pointer to structure representing a device on the port
+ *
+ * This function will not block and so can be used from interrupt
+ * context. If parport_claim() succeeds in claiming access to
+ * the port it returns zero and the port is available to use. It
+ * may fail (returning non-zero) if the port is in use by another
+ * driver and that driver is not willing to relinquish control of
+ * the port.
+ **/
+
+int parport_claim(struct pardevice *dev)
+{
+ struct pardevice *oldcad;
+ struct parport *port = dev->port->physport;
+ unsigned long flags;
+
+ if (port->cad == dev) {
+ printk(KERN_INFO "%s: %s already owner\n",
+ dev->port->name,dev->name);
+ return 0;
+ }
+
+ /* Preempt any current device */
+ write_lock_irqsave (&port->cad_lock, flags);
+ if ((oldcad = port->cad) != NULL) {
+ if (oldcad->preempt) {
+ if (oldcad->preempt(oldcad->private))
+ goto blocked;
+ port->ops->save_state(port, dev->state);
+ } else
+ goto blocked;
+
+ if (port->cad != oldcad) {
+ /* I think we'll actually deadlock rather than
+ get here, but just in case.. */
+ printk(KERN_WARNING
+ "%s: %s released port when preempted!\n",
+ port->name, oldcad->name);
+ if (port->cad)
+ goto blocked;
+ }
+ }
+
+ /* Can't fail from now on, so mark ourselves as no longer waiting. */
+ if (dev->waiting & 1) {
+ dev->waiting = 0;
+
+ /* Take ourselves out of the wait list again. */
+ spin_lock_irq (&port->waitlist_lock);
+ if (dev->waitprev)
+ dev->waitprev->waitnext = dev->waitnext;
+ else
+ port->waithead = dev->waitnext;
+ if (dev->waitnext)
+ dev->waitnext->waitprev = dev->waitprev;
+ else
+ port->waittail = dev->waitprev;
+ spin_unlock_irq (&port->waitlist_lock);
+ dev->waitprev = dev->waitnext = NULL;
+ }
+
+ /* Now we do the change of devices */
+ port->cad = dev;
+
+#ifdef CONFIG_PARPORT_1284
+ /* If it's a mux port, select it. */
+ if (dev->port->muxport >= 0) {
+ /* FIXME */
+ port->muxsel = dev->port->muxport;
+ }
+
+ /* If it's a daisy chain device, select it. */
+ if (dev->daisy >= 0) {
+ /* This could be lazier. */
+ if (!parport_daisy_select (port, dev->daisy,
+ IEEE1284_MODE_COMPAT))
+ port->daisy = dev->daisy;
+ }
+#endif /* IEEE1284.3 support */
+
+ /* Restore control registers */
+ port->ops->restore_state(port, dev->state);
+ write_unlock_irqrestore(&port->cad_lock, flags);
+ dev->time = jiffies;
+ return 0;
+
+blocked:
+ /* If this is the first time we tried to claim the port, register an
+ interest. This is only allowed for devices sleeping in
+ parport_claim_or_block(), or those with a wakeup function. */
+
+ /* The cad_lock is still held for writing here */
+ if (dev->waiting & 2 || dev->wakeup) {
+ spin_lock (&port->waitlist_lock);
+ if (test_and_set_bit(0, &dev->waiting) == 0) {
+ /* First add ourselves to the end of the wait list. */
+ dev->waitnext = NULL;
+ dev->waitprev = port->waittail;
+ if (port->waittail) {
+ port->waittail->waitnext = dev;
+ port->waittail = dev;
+ } else
+ port->waithead = port->waittail = dev;
+ }
+ spin_unlock (&port->waitlist_lock);
+ }
+ write_unlock_irqrestore (&port->cad_lock, flags);
+ return -EAGAIN;
+}
+
+/**
+ * parport_claim_or_block - claim access to a parallel port device
+ * @dev: pointer to structure representing a device on the port
+ *
+ * This behaves like parport_claim(), but will block if necessary
+ * to wait for the port to be free. A return value of 1
+ * indicates that it slept; 0 means that it succeeded without
+ * needing to sleep. A negative error code indicates failure.
+ **/
+
+int parport_claim_or_block(struct pardevice *dev)
+{
+ int r;
+
+ /* Signal to parport_claim() that we can wait even without a
+ wakeup function. */
+ dev->waiting = 2;
+
+ /* Try to claim the port. If this fails, we need to sleep. */
+ r = parport_claim(dev);
+ if (r == -EAGAIN) {
+#ifdef PARPORT_DEBUG_SHARING
+ printk(KERN_DEBUG "%s: parport_claim() returned -EAGAIN\n", dev->name);
+#endif
+ /*
+ * FIXME!!! Use the proper locking for dev->waiting,
+ * and make this use the "wait_event_interruptible()"
+ * interfaces. The cli/sti that used to be here
+ * did nothing.
+ *
+ * See also parport_release()
+ */
+
+ /* If dev->waiting is clear now, an interrupt
+ gave us the port and we would deadlock if we slept. */
+ if (dev->waiting) {
+ interruptible_sleep_on (&dev->wait_q);
+ if (signal_pending (current)) {
+ return -EINTR;
+ }
+ r = 1;
+ } else {
+ r = 0;
+#ifdef PARPORT_DEBUG_SHARING
+ printk(KERN_DEBUG "%s: didn't sleep in parport_claim_or_block()\n",
+ dev->name);
+#endif
+ }
+
+#ifdef PARPORT_DEBUG_SHARING
+ if (dev->port->physport->cad != dev)
+ printk(KERN_DEBUG "%s: exiting parport_claim_or_block "
+ "but %s owns port!\n", dev->name,
+ dev->port->physport->cad ?
+ dev->port->physport->cad->name:"nobody");
+#endif
+ }
+ dev->waiting = 0;
+ return r;
+}
+
+/**
+ * parport_release - give up access to a parallel port device
+ * @dev: pointer to structure representing parallel port device
+ *
+ * This function cannot fail, but it should not be called without
+ * the port claimed. Similarly, if the port is already claimed
+ * you should not try claiming it again.
+ **/
+
+void parport_release(struct pardevice *dev)
+{
+ struct parport *port = dev->port->physport;
+ struct pardevice *pd;
+ unsigned long flags;
+
+ /* Make sure that dev is the current device */
+ write_lock_irqsave(&port->cad_lock, flags);
+ if (port->cad != dev) {
+ write_unlock_irqrestore (&port->cad_lock, flags);
+ printk(KERN_WARNING "%s: %s tried to release parport "
+ "when not owner\n", port->name, dev->name);
+ return;
+ }
+
+#ifdef CONFIG_PARPORT_1284
+ /* If this is on a mux port, deselect it. */
+ if (dev->port->muxport >= 0) {
+ /* FIXME */
+ port->muxsel = -1;
+ }
+
+ /* If this is a daisy device, deselect it. */
+ if (dev->daisy >= 0) {
+ parport_daisy_deselect_all (port);
+ port->daisy = -1;
+ }
+#endif
+
+ port->cad = NULL;
+ write_unlock_irqrestore(&port->cad_lock, flags);
+
+ /* Save control registers */
+ port->ops->save_state(port, dev->state);
+
+ /* If anybody is waiting, find out who's been there longest and
+ then wake them up. (Note: no locking required) */
+ /* !!! LOCKING IS NEEDED HERE */
+ for (pd = port->waithead; pd; pd = pd->waitnext) {
+ if (pd->waiting & 2) { /* sleeping in claim_or_block */
+ parport_claim(pd);
+ if (waitqueue_active(&pd->wait_q))
+ wake_up_interruptible(&pd->wait_q);
+ return;
+ } else if (pd->wakeup) {
+ pd->wakeup(pd->private);
+ if (dev->port->cad) /* racy but no matter */
+ return;
+ } else {
+ printk(KERN_ERR "%s: don't know how to wake %s\n", port->name, pd->name);
+ }
+ }
+
+ /* Nobody was waiting, so walk the list to see if anyone is
+ interested in being woken up. (Note: no locking required) */
+ /* !!! LOCKING IS NEEDED HERE */
+ for (pd = port->devices; (port->cad == NULL) && pd; pd = pd->next) {
+ if (pd->wakeup && pd != dev)
+ pd->wakeup(pd->private);
+ }
+}
+
+/* Exported symbols for modules. */
+
+EXPORT_SYMBOL(parport_claim);
+EXPORT_SYMBOL(parport_claim_or_block);
+EXPORT_SYMBOL(parport_release);
+EXPORT_SYMBOL(parport_register_port);
+EXPORT_SYMBOL(parport_announce_port);
+EXPORT_SYMBOL(parport_remove_port);
+EXPORT_SYMBOL(parport_register_driver);
+EXPORT_SYMBOL(parport_unregister_driver);
+EXPORT_SYMBOL(parport_register_device);
+EXPORT_SYMBOL(parport_unregister_device);
+EXPORT_SYMBOL(parport_put_port);
+EXPORT_SYMBOL(parport_find_number);
+EXPORT_SYMBOL(parport_find_base);
+
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 10:53:32 +0100