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* e100: fix dma error in direction for mappingJesse Brandeburg2008-11-161-10/+10
| | | | | | | | | | | | | | The e100 driver triggers BUG_ON(buf->direction != dir) by doing pci_map_single(..., PCI_DMA_BIDIRECTIONAL) and pci_dma_sync_single_for_device(..., PCI_DMA_TODEVICE). Changing the DMA direction, especially with dmabounce will result in unexpected behaviour. Reported-by: Anders Grafstrom <grfstrm@users.sourceforge.net> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-10-011-3/+1
|\ | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/ath9k/core.c drivers/net/wireless/ath9k/main.c net/core/dev.c
| * e100: Use pci_pme_active to clear PME_Status and disable PME#Rafael J. Wysocki2008-09-191-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently e100 uses pci_enable_wake() to clear pending wake-up events and disable PME# during intitialization, but that function is not suitable for this purpose, because it immediately returns error code if device_may_wakeup() returns false for given device. Make e100 use pci_pme_active(), which carries out exactly the required operations, instead. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | drivers/net: replace __FUNCTION__ with __func__Harvey Harrison2008-09-251-1/+1
|/ | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* e100, fix iomap readJiri Slaby2008-08-271-2/+2
| | | | | | | | | | | | | There were 2 omitted readb's used on an iomap space. eliminate them by using ioread8 instead. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Bruce Allan <bruce.w.allan@intel.com> Cc: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com> Cc: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* dma-mapping: add the device argument to dma_mapping_error()FUJITA Tomonori2008-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER architecture does: This enables us to cleanly fix the Calgary IOMMU issue that some devices are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423). I think that per-device dma_mapping_ops support would be also helpful for KVM people to support PCI passthrough but Andi thinks that this makes it difficult to support the PCI passthrough (see the above thread). So I CC'ed this to KVM camp. Comments are appreciated. A pointer to dma_mapping_ops to struct dev_archdata is added. If the pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's NULL, the system-wide dma_ops pointer is used as before. If it's useful for KVM people, I plan to implement a mechanism to register a hook called when a new pci (or dma capable) device is created (it works with hot plugging). It enables IOMMUs to set up an appropriate dma_mapping_ops per device. The major obstacle is that dma_mapping_error doesn't take a pointer to the device unlike other DMA operations. So x86 can't have dma_mapping_ops per device. Note all the POWER IOMMUs use the same dma_mapping_error function so this is not a problem for POWER but x86 IOMMUs use different dma_mapping_error functions. The first patch adds the device argument to dma_mapping_error. The patch is trivial but large since it touches lots of drivers and dma-mapping.h in all the architecture. This patch: dma_mapping_error() doesn't take a pointer to the device unlike other DMA operations. So we can't have dma_mapping_ops per device. Note that POWER already has dma_mapping_ops per device but all the POWER IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device argument. [akpm@linux-foundation.org: fix sge] [akpm@linux-foundation.org: fix svc_rdma] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix bnx2x] [akpm@linux-foundation.org: fix s2io] [akpm@linux-foundation.org: fix pasemi_mac] [akpm@linux-foundation.org: fix sdhci] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc] [akpm@linux-foundation.org: fix ibmvscsi] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* e100: Do pci_dma_sync after skb_alloc for proper operation on ixp4xxKevin Hao2008-06-271-0/+2
| | | | | | | The E100 device can't work on current kernel (2.6.26-rc6) and will cause kernel corruption on intel ixdp4xx. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* net: use get/put_unaligned_* helpersHarvey Harrison2008-04-291-1/+1
| | | | | | | | | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Auke Kok <auke-jan.h.kok@intel.com> Cc: John Ronciak <john.ronciak@intel.com> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* e100: endianness annotationsAl Viro2008-03-261-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: Do suspend/shutdown like e1000Auke Kok2008-03-051-26/+3
| | | | | | | | | This fixes a "trying to free already free IRQ" message and simplifies the shutdown/suspend code by re-using already existing code when going to suspend. The code is now symmetric with e100_resume. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: fix spelling errorsAndreas Mohr2008-02-031-7/+7
| | | | | | | Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Net: e100, fix iomap mem accessesJiri Slaby2008-02-031-2/+2
| | | | | | | | | | | Patch against netdev-2.6 follows. -- writeX functions are not permitted on iomap-ped space change to iowriteX, also pci_unmap pci_map-ped space on exit (instead of iounmap). Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* e100 endianness annotationsAl Viro2008-01-291-37/+35
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Fix e100 on systems that have cache incoherent DMADavid Acker2008-01-291-29/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the systems that have cache incoherent DMA, including ARM, there is a race condition between software allocating a new receive buffer and hardware writing into a buffer. The two race on touching the last Receive Frame Descriptor (RFD). It has its el-bit set and its next link equal to 0. When hardware encounters this buffer it attempts to write data to it and then update Status Word bits and Actual Count in the RFD. At the same time software may try to clear the el-bit and set the link address to a new buffer. Since the entire RFD is once cache-line, the two write operations can collide. This can lead to the receive unit stalling or interpreting random memory as its receive area. The fix is to set the el-bit on and the size to 0 on the next to last buffer in the chain. When the hardware encounters this buffer it stops and does not write to it at all. The hardware issues an RNR interrupt with the receive unit in the No Resources state. Software can write to the tail of the list because it knows hardware will stop on the previous descriptor that was marked as the end of list. Once it has a new next to last buffer prepared, it can clear the el-bit and set the size on the previous one. The race on this buffer is safe since the link already points to a valid next buffer and the software can handle the race setting the size (assuming aligned 16 bit writes are atomic with respect to the DMA read). If the hardware sees the el-bit cleared without the size set, it will move on to the next buffer and skip this one. If it sees the size set but the el-bit still set, it will complete that buffer and then RNR interrupt and wait. Signed-off-by: David Acker <dacker@roinet.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* netdev: use ARRAY_SIZE() instead of sizeof(array) / ETH_GSTRING_LENAlejandro Martinez Ruiz2008-01-291-2/+2
| | | | | | | | Using ARRAY_SIZE() on arrays of the form array[][K] makes it unnecessary to know the value of K when checking its size. Signed-off-by: Alejandro Martinez Ruiz <alex@flawedcode.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [NET]: Make ->poll() breakout consistent in Intel ethernet drivers.David S. Miller2008-01-091-4/+3
| | | | | | | | | | | | | | | | This makes the ->poll() routines of the E100, E1000, E1000E, IXGB, and IXGBE drivers complete ->poll() consistently. Now they will all break out when the amount of RX work done is less than 'budget'. At a later time, we may want put back code to include the TX work as well (as at least one other NAPI driver does, but by in large NAPI drivers do not do this). But if so, it should be done consistently across the board to all of these drivers. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Auke Kok <auke-jan.h.kok@intel.com>
* [NET]: Do not check netif_running() and carrier state in ->poll()David S. Miller2008-01-091-1/+1
| | | | | | | | | | Drivers do this to try to break out of the ->poll()'ing loop when the device is being brought administratively down. Now that we have a napi_disable() "pending" state we are going to solve that problem generically. Signed-off-by: David S. Miller <davem@davemloft.net>
* e100: free IRQ to remove warningwhenrebootingAuke Kok2007-12-141-1/+4
| | | | | | | | | | | Adapted from Ian Wienand <ianw@gelato.unsw.edu.au> Explicitly free the IRQ before removing the device to remove a warning "Destroying IRQ without calling free_irq" Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Cc: Ian Wienand <ianw@gelato.unsw.edu.au> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: cleanup unneeded mathAuke Kok2007-12-071-4/+2
| | | | | | | | | No need to convert to bytes and back - cleanup unneeded code. Adapted from fix from 'Roel Kluin <12o3l@tiscali.nl>' Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Fix misspellings of "system", "controller", "interrupt" and "necessary".Robert P. J. Day2007-10-191-1/+1
| | | | | | | | Fix the various misspellings of "system", controller", "interrupt" and "[un]necessary". Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* network drivers: sparse warning fixesStephen Hemminger2007-10-111-1/+1
| | | | | | | Fix some of the easy warnings in network device drivers. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [netdrvr] Stop using legacy hooks ->self_test_count, ->get_stats_countJeff Garzik2007-10-111-9/+10
| | | | | | | These have been superceded by the new ->get_sset_count() hook. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF()Joe Perches2007-10-111-5/+4
| | | | | | | This is nicer than the MAC_FMT stuff. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] drivers/net: statistics cleanup #1 -- save memory and shrink codeJeff Garzik2007-10-111-14/+9
| | | | | | | | | | | | | | | | | We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Nuke SET_MODULE_OWNER macro.Ralf Baechle2007-10-111-1/+0
| | | | | | | | | | | | It's been a useless no-op for long enough in 2.6 so I figured it's time to remove it. The number of people that could object because they're maintaining unified 2.4 and 2.6 drivers is probably rather small. [ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* e100: timer power savingStephen Hemminger2007-10-111-1/+2
| | | | | | | | | Since E100 timer is 2HZ, use rounding to make timer occur on the correct boundary. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [NET]: Make NAPI polling independent of struct net_device objects.Stephen Hemminger2007-10-111-20/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several devices have multiple independant RX queues per net device, and some have a single interrupt doorbell for several queues. In either case, it's easier to support layouts like that if the structure representing the poll is independant from the net device itself. The signature of the ->poll() call back goes from: int foo_poll(struct net_device *dev, int *budget) to int foo_poll(struct napi_struct *napi, int budget) The caller is returned the number of RX packets processed (or the number of "NAPI credits" consumed if you want to get abstract). The callee no longer messes around bumping dev->quota, *budget, etc. because that is all handled in the caller upon return. The napi_struct is to be embedded in the device driver private data structures. Furthermore, it is the driver's responsibility to disable all NAPI instances in it's ->stop() device close handler. Since the napi_struct is privatized into the driver's private data structures, only the driver knows how to get at all of the napi_struct instances it may have per-device. With lots of help and suggestions from Rusty Russell, Roland Dreier, Michael Chan, Jeff Garzik, and Jamal Hadi Salim. Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra, Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan. [ Ported to current tree and all drivers converted. Integrated Stephen's follow-on kerneldoc additions, and restored poll_list handling to the old style to fix mutual exclusion issues. -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: ethtool_perm_addr only has one implementationMatthew Wilcox2007-07-311-1/+0
| | | | | | | | | All drivers implement ethtool get_perm_addr the same way -- by calling the generic function. So we can inline the generic function into the caller and avoid going through the drivers. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: David S. Miller <davem@davemloft.net>
* PCI: Change all drivers to use pci_device->revisionAuke Kok2007-07-121-5/+3
| | | | | | | | | | | | | | | | | | | | Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* e100: Fix Tyan motherboard e100 not receiving IPMI commandsDavid Graham2007-07-101-3/+9
| | | | | | | | | | | | | | The 82550 & 51 parts have an extended configuration block that includes a bit "GMRC", required to enable the expected TCO behavior, in config byte offset 22d. The config block sent by the failing driver does include the extension area, but this bit is not initialised, and the downlaod only specifies 0x16 bytes to be sent to the NIC (thaht's bytes 00..21d). By initializing the GMRC bit, and extending the download size for D102+ MACs, the problem is resolved. Signed-off-by: David Graham <david.graham@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Revert "[netdrvr e100] experiment with doing RX in a similar manner to eepro100"Jeff Garzik2007-06-131-9/+63
| | | | | | | | | | | | | | | This reverts commit d52df4a35af569071fda3f4eb08e47cc7023f094. This patch attempted to fix e100 for non-cache coherent memory architectures by using the cb style code that eepro100 had and using the EL and s bits from the RFD list. Unfortunately the hardware doesn't work exactly like this and therefore this patch actually breaks e100. Reverting the change brings it back to the previously known good state for 2.6.22. The pending rewrite in progress to this code can then be safely merged later. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: Optionally use I/O mode only to access register spaceJesse Brandeburg2007-04-281-33/+39
| | | | | | | | | | | It appears that some systems still like e100 better if it uses I/O access mode. Setting the new parameter use_io=1 will cause all driver instances to use io mapping to access the register space on the e100 device. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: allow bad MAC address when running with invalid eeprom csumJesse Brandeburg2007-04-281-5/+10
| | | | | | | | | | | | | Seved Torstendahl <seved.torstendahl@netinsight.net> suggested to let the module parameter for invalid eeprom checksum control the valid mac address test. If this bypass happens we should print a different message, or at least one that is correct, maybe something like below Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [netdrvr e100] experiment with doing RX in a similar manner to eepro100Scott Feldman2007-04-281-63/+9
| | | | | | | | | | | | | | | | | | | | | | I was going to say that eepro100's speedo_rx_link() does the same DMA abuse as e100, but then I noticed one little detail: eepro100 sets both EL (end of list) and S (suspend) bits in the RFD as it chains it to the RFD list. e100 was only setting the EL bit. Hmmm, that's interesting. That means that if HW reads a RFD with the S-bit set, it'll process that RFD and then suspend the receive unit. The receive unit will resume when SW clears the S-bit. There is no need for SW to restart the receive unit. Which means a lot of the receive unit state tracking code in the driver goes away. So here's a patch against 2.6.14. (Sorry for inlining it; the mailer I'm using now will mess with the word wrap). I can't test this on XScale (unless someone has an e100 module for Gumstix :) . It should be doing exactly what eepro100 does with RFDs. I don't believe this change will introduce a performance hit because the S-bit and EL-bit go hand-in-hand meaning if we're going to suspend because of the S- bit, we're on the last resource anyway, so we'll have to wait for SW to replenish. (cherry picked from 29e79da9495261119e3b2e4e7c72507348e75976 commit)
* [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}Arnaldo Carvalho de Melo2007-04-261-1/+1
| | | | | | | To clearly state the intent of copying to linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
* e100: fix napi ifdefs removing needed codeAuke Kok2007-02-021-6/+1
| | | | | | | | | | | | | e100: fix napi ifdefs removing needed code From: Auke Kok <auke-jan.h.kok@intel.com> The e100 driver is NAPI mode only. We need to netif_poll_disable during suspend and shutdown. The non-NAPI driver code was removed and is only avaiable in the out-of-tree e100 kernel driver. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: fix irq leak on suspend/resumeAuke Kok2007-01-301-0/+2
| | | | | | | | | | | | | e100: fix irq leak on suspend/resume From: Frederik Deweerdt <frederik.deweerdt@gmail.com> The e100_resume() function should be calling netif_device_detach and free_irq. This fixes multiple irq's being allocated after resume. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* e100: replace kmalloc with kcallocYan Burman2006-12-121-2/+1
| | | | | | | | Replace kmalloc+memset with kcalloc Signed-off-by: Yan Burman <burman.yan@gmail.com> Acked-By: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Merge branch 'master' of ↵David Howells2006-12-051-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/infiniband/core/iwcm.c drivers/net/chelsio/cxgb2.c drivers/net/wireless/bcm43xx/bcm43xx_main.c drivers/net/wireless/prism54/islpci_eth.c drivers/usb/core/hub.h drivers/usb/input/hid-core.c net/core/netpoll.c Fix up merge failures with Linus's head and fix new compilation failures. Signed-Off-By: David Howells <dhowells@redhat.com>
| * Fix misc .c/.h comment typosMatt LaPlante2006-11-301-1/+1
| | | | | | | | | | | | | | Fix various .c/.h typos in comments (no code changes). Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | WorkStruct: make allyesconfigDavid Howells2006-11-221-4/+4
|/ | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* e100: account for closed interface when shutting downAuke Kok2006-10-241-2/+8
| | | | | | | | Account for the interface being closed before disabling polling on a device, to fix shutdown on some systems that explcitly close the netdevice before calling shutdown. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* [PATCH] e100: fix reboot -f with netconsole enabledAuke Kok2006-10-201-19/+31
| | | | | | | | | | | When rebooting with netconsole over e100, the driver shutdown code would deadlock with netpoll. Reduce shutdown code to a bare minimum while retaining WoL and suspend functionality. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* e100, e1000, ixgb: increment version numbersAuke Kok2006-09-271-1/+1
| | | | | | | | e100-3.5.17-k2 e1000-7.2.9-k2 ixgb-1.0.117-k2 Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100: rework WoL and shutdown handlingAuke Kok2006-09-271-31/+20
| | | | | | | | | | Unify our shutdown/suspend/resume code and make it similar to e1000: e1000_shutdown now calls suspend which does the exact same thing on shutdown except saving PCI config state on suspend. WoL setup code is now also more simple and works even when CONFIG_PM is not set, which was previously broken. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100: Add debugging code for cb cleaning.Jesse Brandeburg2006-09-271-3/+4
| | | | | | | Refine cb cleaning debug printout and print out all cleaned cbs' status. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100, e1000, ixgb: Fix an impossible memory overwrite bugAuke Kok2006-09-271-1/+1
| | | | | | | | | We keep getting requests from people that think that this might be an exploitable hole where we would overwrite 4 bytes in the netdev struct if the pci name would exceed 15 characters. In reality this will never happen but we fix it anyway. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100, e1000, ixgb: update copyright header and remove LICENSEAuke Kok2006-09-271-10/+10
| | | | | | | | This update to the copyright header adds the mailinglist, and aligns it with the kernel licensing as well as remove the offending 'all rights reserved'. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* drivers/net: const-ify ethtool_ops declarationsJeff Garzik2006-09-131-1/+1
| | | | Signed-off-by: Jeff Garzik <jeff@garzik.org>
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