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path: root/drivers/mmc/tifm_sd.c
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* mmc: Move host and card drivers to subdirsPierre Ossman2007-05-01
| | | | | | | Clean up the drivers/mmc directory by moving card and host drivers into subdirectories. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: Move OCR bit definesPierre Ossman2007-05-01
| | | | | | | All host drivers were #include:ing mmc/protocol.h just to get access to the OCR bit defines. Move these to host.h instead. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm: layout fixes, small changes to comments and printfsAlex Dubov2007-05-01
| | | | | | | Cosmetic changes to the code. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: implement software scatter-gatherAlex Dubov2007-05-01
| | | | | | | | | | | It was found that delays associated with issue and completion of the commands severely limit performance of the new, fast SD cards. To alleviate this issue scatter-gather emulation in software is implemented for both dma and pio transfer modes. Non-block aligned and high memory sg entries are accounted for. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: fix resume handlerAlex Dubov2007-05-01
| | | | | | | | | Resume should not explicitly check for media type. Instead, it may relay on success of socket initialization. Small changes are introduced to tifm_sd_initialize to make it more robust. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: replace command completion state machine with full checkingAlex Dubov2007-05-01
| | | | | | | | | State machine used to to track mmc command state was found to be fragile and unreliable, making many cards unusable. The safer solution is to perform all needed checks at every card event. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: merge dma and pio request processing pathsAlex Dubov2007-05-01
| | | | | | | | To allow for switching of trasfer mode (dma/pio) on a per-request basis, pio and dma request issue and completion function are now merged. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: separate command flags, socket flags and register bit masksAlex Dubov2007-05-01
| | | | | | | | | | host->flags variable was hosting a collection of bits with different semantics. For clarity, hardware bit masks are now defined as macros, socket flags represented as bit fields and flags (now cmd_flags) only hosts command processing modifiers. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: remove wait for power off on removeAlex Dubov2007-05-01
| | | | | | | | | This wait was needed because of the mmc layer failure to wait for completion of all outstanding commands before host removal. It should be fixed now in the mmc layer. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: remove tifm_sd_terminate functionAlex Dubov2007-05-01
| | | | | | | | tifm_sd_terminate can only lawfully be called on device removal so it can be merged with tifm_sd_remove. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm: simplify bus match and uevent handlersAlex Dubov2007-05-01
| | | | | | | | Remove code duplicating the kernel functionality and clean up data structures involved in driver matching. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm: hide details of interrupt processing from socket driversAlex Dubov2007-05-01
| | | | | | | | | Instead of passing transformed value of adapter interrupt status to socket drivers, implement two separate callbacks - one for card events and another for dma events. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: treat "status error" as normal command completionAlex Dubov2007-02-11
| | | | | | | | | | TI FlasMedia controller attempts to validate command responses and issues a "status error" if response does not matches its perceived (by controller) value. As mmc layer does its own validation we can safely ignore the controller's opinion. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: tifm: replace kmap with page_addressPierre Ossman2007-02-04
| | | | | | | Since we actively avoid highmem, calling kmap_atomic() instead of page_address() is effectively only obfuscation. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: Allow host drivers to specify max block countPierre Ossman2007-02-04
| | | | | | | | | | | | Many controllers have an upper limit on the number of blocks that can be transferred in one request. Allow the host drivers to specify this and make sure we avoid hitting this limit. Also change the max_sectors field to avoid confusion. This makes it map less directly to the block layer limits, but as they didn't apply directly on MMC cards anyway, this isn't a great loss. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: Allow host drivers to specify a max block sizePierre Ossman2007-02-04
| | | | | | | Most controllers have an upper limit on the block size. Allow the host drivers to specify this and make sure we avoid hitting this limit. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: add suspend and resume functionalityAlex Dubov2007-02-04
| | | | | Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* Remove unused return value from signal_irq callbackAlex Dubov2007-02-04
| | | | | Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: prettifyAlex Dubov2007-02-04
| | | | | | | This patch introduces no semantic changes - it is here for estetic purposes. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: restructure initialization, removal and command handlingAlex Dubov2007-02-04
| | | | | | | | | | | | | | | | | | | In order to support correct suspend and resume several changes were needed: 1. Switch from work_struct to tasklet for command handling. When device suspend is called workqueues are already frozen and can not be used. 2. Separate host initialization code from driver's probe and don't rely on interrupts for host initialization. This, in turn, addresses two problems: a) Resume needs to re-initialize the host, but can not assume that device interrupts were already re-armed. b) Previously, probe will return successfully before really knowing the state of the host, as host interrupts were not armed in time. Now it uses polling to determine the real host state before returning. 3. Separate termination code from driver's remove. Termination may be caused by resume, if media changed type or became unavailable during suspend. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: fix hardware timeout setupAlex Dubov2007-02-04
| | | | | | | | The register access order when setting hardware timeout was incorrect and causing problems (wrong timeout intervals). This is now fixed. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: Switch software timeout handler from work_struct to timerAlex Dubov2007-02-04
| | | | | | | | | | | Two changes are introduced to software timeout handler in order to simplify its management: 1. The implementation is switched from work_struct to timer 2. Previously, software timeout was rearmed with each interrupt. Now, current request must complete entirely within timeout interval. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: use kmap_atomic instead of kmap for PIO data bufferAlex Dubov2007-02-04
| | | | | | | | Data buffer for PIO transfer used to be mapped in advance with kmap. Abolish it in favor of on-demand kmap_atomic. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* tifm_sd: alter order of the states in the command handlerAlex Dubov2007-02-04
| | | | | | | | | | | | Previously, stop command was issued right after BRS (block received/sent) event. Stop command completion event could interfere with the card busy event, causing miscount of the written blocks. This patch ensures that stop command issued as last action for a particular command, after DMA sompletion event and written block count verification. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: Correct definition of R6Philip Langdale2007-01-15
| | | | | | | | | | | During development of SDHC support, it was discovered that the definition for R6 was incorrect. This patch fixes that and patches the drivers that do switch on the response type. Signed-off-by: Philip Langdale <philipl@overt.org> Cc: Alex Dubov <oakad@yahoo.com> Cc: Pavel Pisa <ppisa@pikron.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* [PATCH] LOG2: Implement a general integer log2 facility in the kernelDavid Howells2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This facility provides three entry points: ilog2() Log base 2 of unsigned long ilog2_u32() Log base 2 of u32 ilog2_u64() Log base 2 of u64 These facilities can either be used inside functions on dynamic data: int do_something(long q) { ...; y = ilog2(x) ...; } Or can be used to statically initialise global variables with constant values: unsigned n = ilog2(27); When performing static initialisation, the compiler will report "error: initializer element is not constant" if asked to take a log of zero or of something not reducible to a constant. They treat negative numbers as unsigned. When not dealing with a constant, they fall back to using fls() which permits them to use arch-specific log calculation instructions - such as BSR on x86/x86_64 or SCAN on FRV - if available. [akpm@osdl.org: MMC fix] Signed-off-by: David Howells <dhowells@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Howells <dhowells@redhat.com> Cc: Wojtek Kaniewski <wojtekka@toxygen.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* WorkStruct: make allyesconfigDavid Howells2006-11-22
| | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* [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] 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: 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>
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