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* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* [PATCH] sound/sparc/dbri: Use ARRAY_SIZE macroTobias Klauser2006-09-291-3/+1
| | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NULL noise removalAl Viro2006-09-251-3/+3
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [ALSA] sparc dbri: SMP fixesKrzysztof Helt2006-09-231-17/+48
| | | | | | | | | The dbri driver hangs when used in kernel compiled with SMP support due to inproper locking. The patch fixes it. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: OSS layer fixKrzysztof Helt2006-09-231-2/+0
| | | | | | | | | | This patch removes setting of incorrect stop_threshold value inside the driver. After the change, playback through the OSS layer works correctly. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] dbri sparc: fixes TS leakKrzysztof Helt2006-09-231-2/+18
| | | | | | | | This patch fixes time slot leak in the dbri driver. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: recording is backKrzysztof Helt2006-09-231-45/+20
| | | | | | | | | | This patch fixes sound recording after the driver convertion to ring buffered version. It also contains small clean ups to the driver. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: hardware constrains addedKrzysztof Helt2006-09-231-19/+62
| | | | | | | | | | This patch adds ALSA hardware constrains so stereo is possible only with 16-bit format. It contains small cleanups to ring buffered code as well. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: ring buffered versionKrzysztof Helt2006-09-231-193/+192
| | | | | | | | | | It is a complete rework of low level layer to work on ring buffers for comands and data descriptors. This removes annoying noise due to delay in data buffer switching. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: simplifed linking time slot functionKrzysztof Helt2006-09-231-84/+41
| | | | | | | | A simplified routines to link and unlink time slots. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: fixed setting of burst size after resetKrzysztof Helt2006-09-231-8/+9
| | | | | | | | | A proper way to set DBRI's burst size. The size must be set after each chip reset. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: more driver cleanupKrzysztof Helt2006-09-231-29/+16
| | | | | | | | A general clean up and redudant code removal. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: removal of dri_desc structKrzysztof Helt2006-09-231-23/+17
| | | | | | | | The structure is in big part redudant. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: removal of redudant volatile keywordsKrzysztof Helt2006-09-231-3/+3
| | | | | | | | It removes redudant volatile keywords. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri: removal of unused struct membersKrzysztof Helt2006-09-231-29/+6
| | | | | | | | It removes unused or rarely used members of defined structures. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] sparc dbri removal of DBRI_NO_INTSKrzysztof Helt2006-09-231-23/+8
| | | | | | | | | This patch removes define DBR_NO_INTS and all code related to handling more than one dbri irq statuses block. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [ALSA] dbri driver cleanupKrzysztof Helt2006-09-231-11/+5
| | | | | | | | | This is a small clean up of the dbri driver for sparc machines. It contains also a fix to DBRI interrupt queue initialization. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* [PATCH] sparc: resource warning fixAndrew Morton2006-07-041-1/+1
| | | | | | | | | | | | | sound/sparc/amd7930.c: In function 'amd7930_attach_common': sound/sparc/amd7930.c:1040: warning: format '%08lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t' sound/sparc/cs4231.c:2043: warning: format '%016lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t' sound/sparc/dbri.c: In function 'dbri_attach': sound/sparc/dbri.c:2650: warning: format '%016lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t' Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] irq-flags: sound: Use the new IRQF_ constantsThomas Gleixner2006-07-021-1/+1
| | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* typo fixes: specfic -> specificAdrian Bunk2006-06-301-1/+1
| | | | Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] 64bit resource: fix up printks for resources in sound driversGreg Kroah-Hartman2006-06-271-2/+2
| | | | | | | | | | This is needed if we wish to change the size of the resource structures. Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [ALSA] Remove zero-initialization of static variablesTakashi Iwai2006-06-221-2/+2
| | | | | | | Removed zero-initializations of static variables. A tiny optimization. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove unneeded read/write_size fields in proc text opsTakashi Iwai2006-06-221-2/+2
| | | | | | | Remove unneeded read/write_size fields in proc text ops. snd_info_set_text_ops() is fixed, too. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [SPARC]: Kill __irq_itoa().David S. Miller2006-06-201-2/+2
| | | | | | | | | | | | | | | | | | This ugly hack was long overdue to die. It was a way to print out Sparc interrupts in a more freindly format, since IRQ numbers were arbitrary opaque 32-bit integers which vectored into PIL levels. These 32-bit integers were not necessarily in the 0-->NR_IRQS range, but the PILs they vectored to were. The idea now is that we will increase NR_IRQS a little bit and use a virtual<-->real IRQ number mapping scheme similar to PowerPC. That makes this IRQ printing hack irrelevant, and furthermore only a handful of drivers actually used __irq_itoa() making it even less useful. Signed-off-by: David S. Miller <davem@davemloft.net>
* [ALSA] dbri - Don't return errors without CONFIG_PROC_FSTakashi Iwai2006-01-031-6/+6
| | | | | | | | | Modules: SPARC DBRI driver Don't return errors if the proc file can't be created (for the case without CONFIG_PROC_FS). Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove snd_card_generic_dev()Takashi Iwai2006-01-031-3/+0
| | | | | | | Remove the obsolete snd_card_generic_dev(). CONFIG_SND_GENERIC_DRIVER is also removed from Kconfig. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove xxx_t typedefs: SPARC DBRITakashi Iwai2006-01-031-109/+109
| | | | | | | | Modules: SPARC DBRI driver Remove xxx_t typedefs from the SPARC DBRI driver. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Remove obsolete chip_tTakashi Iwai2005-11-041-4/+1
| | | | | | | | Modules: Documentation,MIPS AU1x00 driver,PPC Beep,SPARC DBRI driver Removed the use of chip_t, which was obsoleted. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Several fixes for the Sun DBRI driverMartin Habets2005-09-121-102/+103
| | | | | | | | | | | | | | | | | | | | | | | | | | | | SPARC DBRI driver This patch contains the following fixes to the Alsa DBRI driver: - Remove 2.6.13 build warning on the prom_getproperty() call. - Rework command synchronization: send a sequence number with D_WAIT, and check it in the completion interrupt. Move synchronization delays from _cmdsend() to _cmdlock() allowing the CPU to do other usefull things while the DBRI is processing the commands. - Fix first argument of printk() calls. - Enable burst transfers for DBRI. Original 2.4 patch from Krzysztof Helt - Make dbri_debug module parameter writable from sysfs. Remove obsolete write access to the /proc debug file. - Replace udelay() with msleep_interruptible() where possible. - Update documentation comments. Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Add snd_card_set_generic_dev() callTakashi Iwai2005-09-121-15/+14
| | | | | | | | | | | ARM,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,MIPS MIPS AU1x00 driver,PPC,PPC PowerMac driver,SPARC,SPARC AMD7930 driver SPARC cs4231 driver,SPARC DBRI driver - Added snd_card_set_generic_dev() call. - Added SND_GENERIC_DRIVER to Kconfig. - Clean up the error path in probe if necessary. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* [ALSA] Add DBRI driver on SparcsTakashi Iwai2005-07-281-0/+2729
Documentation,SPARC,/sparc/Makefile Add the DBRI driver on Sparcs by Martin Habets <mhabets@users.sourceforge.net> (moved from alsa-driver tree). Signed-off-by: Takashi Iwai <tiwai@suse.de>
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