Clean up the drivers/mmc directory by moving card and host drivers
into subdirectories.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The mmc block queue functions are tailored for the mmc_block
driver, so move those functions into that module.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The "present" state indicates that the card is a registered device, so
it is more clear to put it together with the actual registration.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NPierre Ossman <drzeus@drzeus.cx>

Split out the type of card into its own field as it hardly
qualifies as a state.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Support for MMC 4.2 sector based cards. This tweaks the init a
bit and reads a new field out of the EXT_CSD.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Fix copy-n-paste error.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Cosmetic changes to the code.
Signed-off-by: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

tifm_sd_terminate can only lawfully be called on device removal so it can be
merged with tifm_sd_remove.
Signed-off-by: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Remove code duplicating the kernel functionality and clean up data
structures involved in driver matching.
Signed-off-by: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Block completion interrupts occur faster than we can process
them, so just ignore them competely.

Commit also fixes up some incorrect register defines.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Now that we've fixed our only offender when it comes to strange sg
list, add a check so that future users keep the sg list proper with
regard to transfer size.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

mmc layer may introduce additional (compared to block layer) limits on
request size. Culling of the sg list to match adjusted request size
simplifies the handling of such cases in the low level driver, allowing
it to skip block count checks while processing sg entries.

(fixes for wbsd and sdhci by Pierre Ossman)
Signed-off-by: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make use of add_uevent_var() instead of (often incorrectly) open coding it.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NEric Rannaud <eric.rannaud@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The SDHC controllers cannot process shorter transfers.
They has to be handled as longer ones, but it such case CRC
error is evaluated. There was a case in the code still,
where this error is not ignored as it should to be process
these transfers.
Signed-off-by: NPavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Release the device's irq during sleep, as all well-behaved drivers
should.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The interrupt is shared with another device, which resumes earlier than the
sdhci controller, and generates an interrupt.

The sdhci interrupt handler runs, sees 0xffffffff in its own device's
interrupt status, and tries to handle it..  The reason for the 0xffffffff
is that the device is still suspended, and *all* regs are reading back
0xffffffff.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The new high-speed timings are similar to each other and the old
system, but not identical. And although things "just work" most of
the time, sometimes it does not. So we need to start marking which
hosts are known to fully comply with the new timings.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).
Signed-off-by: NTim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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: NAlex Dubov <oakad@yahoo.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

There was one kunmap_atomic() left over from
4a0ddbd2 that was causing
crashes.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

We get enough error reports without having to ask for it.
Remove notices about mailing the development list.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The driver version was only really meaningful when it was an
out-of-tree driver. Now we can use the version of the kernel.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The driver version was only really meaningful when it was an
out-of-tree driver. Now we can use the version of the kernel.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The Atmel AT91 and AVR32 processor architectures share many of the same
peripherals.  The PDC (Peripheral Data Controller) registers are also
implemented within in a number of the on-chip peripherals (eg, USART,
MMC, SPI, SSC, etc).

In a attempt not to duplicate the register definitions in each
peripheral, or in each architecture, the at91_pdc.h header in
asm-arm/arch-at91 and asm-avr32/arch-at32ap has been replaced with
linux/atmel_pdc.h.

The definitions have also been renamed from AT91_PDC_* to ATMEL_PDC_*,
and the drivers updated accordingly.

Original patch from Nicolas Ferre.
Signed-off-by: NAndrew Victor <andrew@sanpeople.com>
Acked-by: NHaavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some bad if-clauses caused the driver to just report the highest
supported voltage, not all.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure we report back any errors from pci_enable_device().
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure we release the claim on the host even on failure.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

MMC high-speed, wide bus support and SD high-speed
are functions that aren't critical for correct
operation of the card. As such, they shouldn't mark
the card as bad or dead when there is a failure
activating these features.

This is needed in particular on some really stupid
hardware (e.g. Winbond's) where not all data transfer
commands are supported.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>