aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mmc
Commit message (Collapse)AuthorAge
* Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-12-07
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits) [ARM] 4002/1: S3C24XX: leave parent IRQs unmasked [ARM] 4001/1: S3C24XX: shorten reboot time [ARM] 3983/2: remove unused argument to __bug() [ARM] 4000/1: Osiris: add third serial port in [ARM] 3999/1: RX3715: suspend to RAM support [ARM] 3998/1: VR1000: LED platform devices [ARM] 3995/1: iop13xx: add iop13xx support [ARM] 3968/1: iop13xx: add iop13xx_defconfig [ARM] Update mach-types [ARM] Allow gcc to optimise arm_add_memory a little more [ARM] 3991/1: i.MX/MX1 high resolution time source [ARM] 3990/1: i.MX/MX1 more precise PLL decode [ARM] 3986/1: H1940: suspend to RAM support [ARM] 3985/1: ixp4xx clocksource cleanup [ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2) [ARM] 3994/1: ixp23xx: fix handling of pci master aborts [ARM] 3981/1: sched_clock for PXA2xx [ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit [ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter ...
| * [ARM] 3963/1: AT91: Update configuration filesAndrew Victor2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A number of configuration file changes. These are mainly to replace references to ARCH_AT91RM9200 and ARCH_AT91SAM9261 with the common/generic ARCH_AT91. That way we don't need to mention every specific AT91 processor explicitly. Also adds the configuration option for AT91SAM9260-EK and AT91SAM9261-EK boards. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3954/1: AT91: Update drivers for new headersAndrew Victor2006-11-30
| | | | | | | | | | | | | | | | | | | | | | | | This patch updates the drivers (and other files) which include the hardware headers. This fixes the breakage introduced in patches 3950/1 and 3951/1 (those patches were getting big). The AVR32 architecture uses the same serial driver and had its own copy of at91rm9200_pdc.h. Renamed it to at91_pdc.h Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'master' of ↵David Howells2006-12-05
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * \ Merge branch 'for-linus' of ↵Linus Torvalds2006-12-02
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc: mmc: correct request error handling mmc: Flush block queue when removing card mmc: sdhci high speed support mmc: Support for high speed SD cards mmc: Fix mmc_delay() function mmc: Add support for mmc v4 wide-bus modes [PATCH] mmc: Add support for mmc v4 high speed mode trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255 Make general code cleanups Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags Platform device error handling cleanup Move register definitions away from the header file Change OMAP_MMC_{READ,WRITE} macros to use the host pointer Replace base with virt_base and phys_base mmc: constify mmc_host_ops vectors mmc: remove kernel_thread()
| | * | mmc: correct request error handlingPierre Ossman2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to jump to the part of just flushing the request when we cannot claim the bus. Sending commands to a bus we do not own will give unpredictable results. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: Flush block queue when removing cardPierre Ossman2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After mmc_block's remove function has exited, we must not touch the card structure in any way. This means we not only must remove the gendisk, we must also flush out any remaning requests already queued up. We previously removed the disk, but didn't flush it, causing oops:es when removing a card in the middle of a transfer. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: sdhci high speed supportPierre Ossman2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The SDHCI spec implies that is is incorrect to set a clock frequency above 25 MHz without setting the high speed bit. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: Support for high speed SD cardsPierre Ossman2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modern SD cards support a clock speed of 50 MHz. Make sure we test for this capability and do the song and dance required to activate it. Activating high speed support actually modifies the TRAN_SPEED field of the CSD. But as the spec says that the cards must report 50 MHz, we might as well skip re-reading the CSD. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: Fix mmc_delay() functionPierre Ossman2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several fixes for mmc_delay(): * Repair if-clause that was supposed to detect sub-hz delays. * Change yield() to cond_resched() as yield() no longer has the semantics we desire. * mmc_delay() is used to guarantee protocol delays, so we cannot return early (i.e. use _interruptable). Based on patch by Amol Lad. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: Add support for mmc v4 wide-bus modesPhilip Langdale2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change adds support for the mmc4 4-bit wide-bus mode. The mmc4 spec defines 8-bit and 4-bit transfer modes. As we do not support any 8-bit hardware, this patch only adds support for the 4-bit mode, but it can easily be built upon when the time comes. The 4-bit mode is electrically compatible with SD's 4-bit mode but the procedure for turning it on is different. This patch implements only the essential parts of the procedure as defined by the spec. Two additional steps are recommended but not compulsory. I am documenting them here so that there's a record. 1) A bus-test mechanism is implemented using dedicated mmc commands which allow for testing the functionality of the data bus at the electrical level. This is pretty paranoid and they way the commands work is not compatible with the mmc subsystem (they don't set valid CRC values). 2) MMC v4 cards can indicate they would like to draw more than the default amount of current in wide-bus modes. We currently will never switch the card into a higher draw mode. Supposedly, allowing the card to draw more current will let it perform better, but the specs seem to indicate that the card will function correctly without the mode change. Empirical testing supports this interpretation. Signed-off-by: Philip Langdale <philipl@overt.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | [PATCH] mmc: Add support for mmc v4 high speed modePhilip Langdale2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for the high-speed modes defined by mmc v4 (assuming the host controller is up to it). On a TI sdhci controller, it improves read speed from 1.3MBps to 2.3MBps. The TI controller can only go up to 24MHz, but everything helps. Another person has taken this basic patch and used it on a Nokia 770 to get a bigger boost because that controller can run at 48MHZ. Signed-off-by: Philip Langdale <philipl@overt.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255Marcin Juszkiewicz2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | PXA MMC driver supports not only PXA255 but also PXA250 and newer ones Signed-off-by: Marcin Juszkiewicz <hrw@openembedded.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | Make general code cleanupsJuha Yrjola juha.yrjola2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of Juha Yrjola's and Komal Shah's earlier patch to make general code cleanups Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br> Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com> Signed-off-by: Komal Shah <komal_shah802003 <at> yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flagsTony Lindgren tony2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of Tony Lindgren's earlier patch to add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags in omap.c Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br> Signed-off-by: Tony Lindgren <tony <at> atomide.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | Platform device error handling cleanupJuha Yrjola juha.yrjola2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of Juha Yrjola's earlier patch to add platform device error handling and a BUG_ON to verify if host == NULL Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br> Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | Move register definitions away from the header fileJuha Yrjola juha.yrjola2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of Juha Yrjola's earlier patch to move register definitions away from the header file and the header file is removed. Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br> Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | Change OMAP_MMC_{READ,WRITE} macros to use the host pointerJuha Yrjola juha.yrjola2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of Juha Yrjola's earlier patch to change OMAP_MMC_{READ,WRITE} macros to use the host pointer Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br> Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | Replace base with virt_base and phys_baseJuha Yrjola juha.yrjola2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is part of Juha Yrjola's earlier patch to replace base with virt_base and phys_base Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br> Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: constify mmc_host_ops vectorsDavid Brownell2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that mmc_host_ops can be constified, update the various drivers to constify those method tables and shrink the writable data segment. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| | * | mmc: remove kernel_thread()Christoph Hellwig2006-12-01
| | |/ | | | | | | | | | | | | | | | | | | Replace kernel_thread() with kthread_run()/kthread_stop(). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2006-12-01
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits) Driver core: show drivers in /sys/module/ Documentation/driver-model/platform.txt update/rewrite Driver core: platform_driver_probe(), can save codespace driver core: Use klist_remove() in device_move() driver core: Introduce device_move(): move a device to a new parent. Driver core: make drivers/base/core.c:setup_parent() static driver core: Introduce device_find_child(). sysfs: sysfs_write_file() writes zero terminated data cpu topology: consider sysfs_create_group return value Driver core: Call platform_notify_remove later ACPI: Change ACPI to use dev_archdata instead of firmware_data Driver core: add dev_archdata to struct device Driver core: convert sound core to use struct device Driver core: change mem class_devices to be real devices Driver core: convert fb code to use struct device Driver core: convert firmware code to use struct device Driver core: convert mmc code to use struct device Driver core: convert ppdev code to use struct device Driver core: convert PPP code to use struct device Driver core: convert cpuid code to use struct device ...
| | * | Driver core: convert mmc code to use struct deviceGreg Kroah-Hartman2006-12-01
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | Converts from using struct "class_device" to "struct device" making everything show up properly in /sys/devices/ with symlinks from the /sys/class directory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * / BUG_ON conversion for drivers/mmc/omap.cEric Sesterhenn2006-11-29
| |/ | | | | | | | | | | | | | | | | This patch converts a if () BUG(); construct to BUG_ON(); which occupies less space, uses unlikely and is safer when BUG() is disabled. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* / WorkStruct: make allyesconfigDavid Howells2006-11-22
|/ | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* MMC: Do not set unsupported bits in OCR responseTimo Teras2006-11-09
| | | | | | | | The card might go to inactive state (according to specification), if there are unsupported bits set in the OCR. Signed-off-by: Timo Teras <timo.teras@solidboot.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* MMC: Poll card status after rescanning cardsTimo Teras2006-11-09
| | | | | | | | | | | | Some broken cards seem to process CMD1 even in stand-by state. The result is that the card replies with ILLEGAL_COMMAND error for the next command sent after rescanning. Currently the next command is select card, which would return the error. But CMD7 does actually succeed and retries of the command will timeout. The workaround is to poll card status after CMD1 to clear the pending error. Signed-off-by: Timo Teras <timo.teras@solidboot.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* [PATCH] missing includes of io.hAl Viro2006-10-25
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] passing pointer to setup_timer() should be via unsigned longAl Viro2006-10-10
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tifm __iomem annotations, NULL noise removalAl Viro2006-10-09
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc: multi sector write transfersPierre Ossman2006-10-06
| | | | | | | | | | | SD cards extend the protocol by allowing the host to query a card how many blocks were successfully stored on the medium. This allows us to safely write chunks of blocks at once. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> 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 Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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] mmc: properly use the new multi block-write error handlingPierre Ossman2006-10-04
| | | | | | | | | | Use the new multi block-write error reporting flag and properly tell the block layer how much data was transferred before the error. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc: use own work queuePierre Ossman2006-10-04
| | | | | | | | | | | | | | | | The MMC layer uses the standard work queue for doing card detection. As this queue is shared with other crucial subsystems, the effects of a long (and perhaps buggy) detection can cause the system to be unusable. E.g. the keyboard stops working while the detection routine is running. The solution is to add a specific mmc work queue to run the detection code in. This is similar to how other subsystems handle detection (a full kernel thread is the most common theme). Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc: avoid some resets without cardPierre Ossman2006-10-04
| | | | | | | | | | | Some Ricoh controllers only respect a full reset when there is no card in the slot. As we wait for the reset to complete, we must avoid even requesting those resets on the buggy controllers. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc: fix MMIO vs memory races in sdhciPierre Ossman2006-10-04
| | | | | | | | | Sprinkle some mmiowb() where needed (writeX() before unlock()). Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc: driver for TI FlashMedia card reader - Kconfig/MakefileAlex Dubov2006-10-04
| | | | | | | | | Signed-off-by: Alex Dubov <oakad@yahoo.com> Cc: Daniel Qarras <dqarras@yahoo.com> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc: driver for TI FlashMedia card reader - sourceAlex Dubov2006-10-04
| | | | | | | | | | | | | Driver for TI Flash Media card reader. At present, only MMC/SD cards are supported. [akpm@osdl.org: cleanups, build fixes] Signed-off-by: Alex Dubov <oakad@yahoo.com> Cc: Daniel Qarras <dqarras@yahoo.com> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mmc (mainly): add "or later" clause to licence statement.Pierre Ossman2006-10-01
| | | | | | | | | | | | Clarify my (Pierre's) position on which GPL versions apply. The patch only touches the source files where I am the only major author. The people who have made the minor commits to the files have been contacted and have no issues with this change. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] BLOCK: Make it possible to disable the block layer [try #6]David Howells2006-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* [PATCH] Split struct request ->flags into two partsJens Axboe2006-09-30
| | | | | | | | | | Right now ->flags is a bit of a mess: some are request types, and others are just modifiers. Clean this up by splitting it into ->cmd_type and ->cmd_flags. This allows introduction of generic Linux block message types, useful for sending generic Linux commands to block devices. Signed-off-by: Jens Axboe <axboe@suse.de>
* Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-09-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits) [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms [ARM] 3855/1: Add generic time support [ARM] 3873/1: S3C24XX: Add irq_chip names [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23 [ARM] nommu: confirms the CR_V bit in nommu mode [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores. [ARM] 3870/1: AT91: Start removing static memory mappings [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards [ARM] 3868/1: AT91 hardware header update [ARM] 3867/1: AT91 GPIO update [ARM] 3866/1: AT91 clock update [ARM] 3865/1: AT91RM9200 header updates [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series [ARM] kthread: switch arch/arm/kernel/apm.c [ARM] Off-by-one in arch/arm/common/icst* [ARM] 3864/1: Refactore sharpsl_pm [ARM] 3863/1: Add Locomo SPI Device [ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h ...
| * [ARM] 3865/1: AT91RM9200 header updatesAndrew Victor2006-09-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is more preparation for adding support for the new Atmel AT91SAM9 processors. Changes include: - Replace AT91_BASE_* with AT91RM9200_BASE_* - Replace AT91_ID_* with AT91RM9200_ID_* - ROM, SRAM and UHP address definitions moved to at91rm9200.h. - The raw AT91_P[ABCD]_* definitions are now depreciated in favour of the GPIO API. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmcLinus Torvalds2006-09-28
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | * 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc: [MMC] Don't check READY_FOR_DATA when reading [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hosts [MMC] Add multi block-write capability [MMC] Remove data->blksz_bits member [MMC] Convert mmci to use data->blksz rather than data->blksz_bits
| * | [MMC] Don't check READY_FOR_DATA when readingRussell King2006-09-24
| | | | | | | | | | | | | | | | | | | | | | | | There's no point checking to see if the card is ready to accept data when we're reading from it - sending the command only wastes precious bus bandwidth. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hostsRussell King2006-09-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some MMC hosts can only handle log2 block sizes. Unfortunately, the MMC password support needs to be able to send non-log2 block sizes. Provide a capability so that the MMC password support can decide whether it should use this support or not. The unfortunate side effect of this host limitation is that any MMC card protected by a password which is not a log2 block size can not be accessed on a host which only allows a log2 block size. This change just adds the flag. The MMC password support code needs updating to use it (if and when it is finally submitted.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [MMC] Add multi block-write capabilityRussell King2006-09-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a capability flag for drivers to set when they can perform multi- block transfers to cards _and_ correctly report the number of bytes transferred should an error occur. The last point is very important - if a driver reports more bytes than were actually accepted by the card and an error occurs, there is the possibility for data loss. Pierre Ossman provided the patch for wbsd and sdhci. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [MMC] Remove data->blksz_bits memberRussell King2006-09-16
| | | | | | | | | | | | | | | | | | data->blksz_bits is unused now - remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [MMC] Convert mmci to use data->blksz rather than data->blksz_bitsRussell King2006-09-16
| |/ | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* / [PATCH] Alchemy: Delete unused pt_regs * argument from au1xxx_dbdma_chan_allocRalf Baechle2006-09-26
|/ | | | | | | | | | | | The third argument of au1xxx_dbdma_chan_alloc's callback function is not used anywhere. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 08:27:25 -0500