| Age | Commit message (Collapse) | Author |
|---|
|
This is a MMC/SD driver for the Samsung S3C24xx SD/MMC controller, originally
developed years ago by Thomas Kleffel <tk@maintech.de>.
Due to time restraints, he had no time to further maintain the driver and
follow the mainline Linux changes in the SD/MMC stack.
With his authorization, I have taken over the task of making it compliant to
the current mainline SD/MMC API and take care of the mainline kernel merge.
After a potential kernel inclusion, we would co-maintain the driver.
Acked-by: Thomas Kleffel <tk@maintech.de>
Signed-off-by: Harald Welte <laforge@gnumonks.org>
|
|
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into rmk-next
|
|
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
It seems that some cards are slightly out of spec and occasionally
will not be able to complete a write in the alloted 250 ms [1].
Incease the timeout slightly to allow even these cards to function
properly.
[1] http://lkml.org/lkml/2008/9/23/390
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Add a change_clock callback to allow drivers to update
device specific clock selections and control registers
when there is a change in clock.
Move the main part of sdhci_set_clock() to a new routine
which can be called by the glue drivers to do the sdhci
standard clock management.
Update the sdhci-s3c driver to use this to select the
appropriate clock source when clocks change.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
At the end of a transfer, check that the DMA engine in the
SDHCI controller actually did what it was meant to and didn't
overrun the end of the buffer.
This seems to be triggered by a timeout during an CMD25 (multiple block
write) to a card. The mmc_block module then issues a command to find out
how much data was moved and this seems to end up triggering this DMA
check. The result is the card's queue generates an OOPS as the stack has
been trampled on due to the extra data transfered.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
Add support for the 'HSMMC' block(s) in the Samsung SoC
line. These are compatible with the SDHCI driver so add
the necessary setup and driver binding for the platform
devices.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
The Samsung SDHCI controller block seems to fail to generate an
INT_DATA_END after the transfer has completed and the bus busy
state finished.
Changes in e809517f6fa5803a5a1cd56026f0e2190fc13d5c to use the
new busy method are the cause of the behaviour change.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
Add a set_ios hook which is called when the SDHCI driver
is called to change parameters such as clock or card
width.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
If using ADMA, then we should print the ADMA error
and current pointer in sdhci_dumpregs() when any
debug is requested.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
Some controllers do not provide clock information in their
capabilities (in the Samsung case, it is because there are
multiple clock sources available to the controller). Add hooks
to allow the system to supply clock information.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into s3c64xx
|
|
Move mci.h to new position in arch/arm/plat-s3c24xx/include/plat
ready to clean out old include directories.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
|
|
Fix fastpath issues
Since mmci_request() can be called from a non-interrupt
context, and does, during kernel init, causing a host
of debug messages during boot if you enable spinlock debugging,
we need to use the spinlock calls that save IRQ flags and
restore them.
Signed-off-by: Linus Walleij <triad@df.lth.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
|
|
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
To keep the size of changesets sane we split the switch by drivers;
to keep the damn thing bisectable we do the following:
1) rename the affected methods, add ones with correct
prototypes, make (few) callers handle both. That's this changeset.
2) for each driver convert to new methods. *ALL* drivers
are converted in this series.
3) kill the old (renamed) methods.
Note that it _is_ a flagday; all in-tree drivers are converted and by the
end of this series no trace of old methods remain. The only reason why
we do that this way is to keep the damn thing bisectable and allow per-driver
debugging if anything goes wrong.
New methods:
open(bdev, mode)
release(disk, mode)
ioctl(bdev, mode, cmd, arg) /* Called without BKL */
compat_ioctl(bdev, mode, cmd, arg)
locked_ioctl(bdev, mode, cmd, arg) /* Called with BKL, legacy */
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
s3cmci: Add Ben Dooks/Simtec Electronics to header & copyright
s3cmci: fix continual accesses to host->pio_ptr
s3cmci: Support transfers which are not multiple of 32 bits.
s3cmci: cpufreq support
s3cmci: Make general protocol errors less noisy
mmc_block: tell block layer there is no seek penalty
|
|
Conflicts:
arch/arm/mach-versatile/core.c
|
|
Since the original authour (Thomas Kleffel) has been too busy to
merge the s3cmci driver and keep it up to date, I (mostly as part
of my role with Simtec Electronics) got the driver to a mergable
state and have been maintaining it since I think that I should
be added to the header. Also add a copyright statement for the
new work.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
The s3cmci driver uses the host->pio_ptr field to
point to the current position into the buffer for data
transfer. During the transfers it does the following:
while (fifo_words--)
*(host->pio_ptr++) = readl(from_ptr);
This is inefficent, as host->pio_ptr is not used in any
other part of the transfer but the compiler emits code
which does the following:
while (fifo_words--) {
u32 *ptr = host->pio_ptr;
*ptr = readl(from_ptr);
ptr++;
host->pio_ptr = ptr;
}
This is obviously a waste of a load and store each time
around the loop, which could be up to 16 times depending
on how much needs to be transfered.
Move the ptr accesses to outside the while loop so that
we do not end up reloading/re-writing the pointer.
Note, this seems to make the code 16 bytes larger.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
To be able to do SDIO the s3cmci driver has to support non-word-sized
transfers. Change pio_words into pio_bytes and fix up all the places
where it is used.
This variant of the patch will not overrun the buffer when reading an
odd number of bytes. When writing, this variant will still read past
the end of the buffer, but since the driver can't support non-word-
aligned transfers anyway, this should not be a problem, since a
word-aligned transfer will never cross a page boundary.
This has been tested with a CSR SDIO Bluetooth Type A device on a
Samsung S3C24A0 processor.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Support for cpu frequency changing.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
General errors, such as timeouts during probe do not need to
be sent to the console, so move them down to be included if the
debug is enabled.
Such errors include:
s3c2440-sdi s3c2440-sdi: s3cmci_request: no medium present
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Conflicts:
arch/arm/mach-versatile/core.c
|
|
Conflicts:
arch/arm/mach-omap2/gpmc.c
arch/arm/mach-omap2/irq.c
|
|
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
include/asm-x86/statfs.h
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (24 commits)
MMC: Use timeout values from CSR
MMC: CSD and CID timeout values
sdhci: 'scratch' may be used uninitialized
mmc: explicitly mention SDIO support in Kconfig
mmc: remove redundant "depends on"
Fix comment in include/linux/mmc/host.h
sdio: high-speed support
mmc_block: hard code 512 byte block size
sdhci: force high speed capability on some controllers
mmc_block: filter out PC requests
mmc_block: indicate strict ordering
mmc_block: inform block layer about sector count restriction
sdio: give sdio irq thread a host specific name
sdio: make sleep on error interruptable
sdhci: reduce card detection delay
sdhci: let the controller wait for busy state to end
atmel-mci: Add missing flush_dcache_page() in PIO transfer code
atmel-mci: Don't overwrite error bits when NOTBUSY is set
atmel-mci: Add experimental DMA support
atmel-mci: support multiple mmc slots
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/atmel-mci-2.6.28
Conflicts:
drivers/mmc/host/atmel-mci.c
|
|
Hard-coded timeout values of 250ms for writes and 100ms for reads are
currently used for MMC transactions over SPI. The spec states that the
timeout values from the card should be used.
Signed-off-by: Matthew Fleming <matthew.fleming@imgtec.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
The MMC spec states that the timeout for accessing the CSD and CID
registers is 64 clock cycles.
Signed-off-by: Matthew Fleming <matthew.fleming@imgtec.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
The variable 'scratch' is always initialized before it's used. The
conditional which is responsible for initialization of 'scratch' will
always evaluate 'true' when the first loop iteration occurs, and thus,
it's properly initialized. GCC doesn't see this, of course, so using
the uninitialized_var() macro seems to work for silencing this case.
Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
We use 512 byte blocks on all cards, and newer cards support nothing
else, so hard code it and make the code less complex.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Some high speed capable controllers forget to set the high speed
capability bit. Make sure we enable the functionality anyway.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
We do not support PC (SCSI) commands, so don't pretend we do by
letting them through.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
The MMC block driver services requests one at a time and in strict
order. Indicate this to the block layer so that it can handle barriers
in an efficient manner.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Make sure we consider the maximum block count when we tell the block
layer about the maximum sector count. That way we don't have to chop
up the request ourselves.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
There is one thread per host controller so make sure they all get
unique names.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
Make sure we can be woken from the forced sleep that is done on errors.
Removing a card often results in -ENOMEDIUM or -EILSEQ so we previously
locked up the removal process for a second.
We could completely exit on -ENOMEDIUM, but it might be a transient
glitch so treat it like any other error.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
The card detection delay was added early when the behaviour of the
card interrupt was still very much unknown (i.e. before there was a
public specification). As it is now known that it is a debounced signal,
reduce the delay to something more sensible.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
The sdhci controllers can interrupt us when the busy state from the
card has ended, saving CPU cycles and power.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
|
|
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits)
[ARM] 5300/1: fixup spitz reset during boot
[ARM] 5295/1: make ZONE_DMA optional
[ARM] 5239/1: Palm Zire 72 power management support
[ARM] 5298/1: Drop desc_handle_irq()
[ARM] 5297/1: [KS8695] Fix two compile-time warnings
[ARM] 5296/1: [KS8695] Replace macro's with trailing underscores.
[ARM] pxa: allow multi-machine PCMCIA builds
[ARM] pxa: add preliminary CPUFREQ support for PXA3xx
[ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h
[ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c
[ARM] pxa/zylonite: add support for USB OHCI
[ARM] ohci-pxa27x: use ioremap() and offset for register access
[ARM] ohci-pxa27x: introduce pxa27x_clear_otgph()
[ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource
[ARM] ohci-pxa27x: move OHCI controller specific registers into the driver
[ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers
[ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c
[ARM] pxa: simplify DMA register definitions
[ARM] pxa: make additional DCSR bits valid for PXA3xx
[ARM] pxa: move i2c register and bit definitions into i2c-pxa.c
...
Fixed up conflicts in
arch/arm/mach-versatile/core.c
sound/soc/pxa/pxa2xx-ac97.c
sound/soc/pxa/pxa2xx-i2s.c
manually.
|
|
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (37 commits)
[SCSI] zfcp: fix double dbf id usage
[SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev
[SCSI] zfcp: fix erp list usage without using locks
[SCSI] zfcp: prevent fc_remote_port_delete calls for unregistered rport
[SCSI] zfcp: fix deadlock caused by shared work queue tasks
[SCSI] zfcp: put threshold data in hba trace
[SCSI] zfcp: Simplify zfcp data structures
[SCSI] zfcp: Simplify get_adapter_by_busid
[SCSI] zfcp: remove all typedefs and replace them with standards
[SCSI] zfcp: attach and release SAN nameserver port on demand
[SCSI] zfcp: remove unused references, declarations and flags
[SCSI] zfcp: Update message with input from review
[SCSI] zfcp: add queue_full sysfs attribute
[SCSI] scsi_dh: suppress comparison warning
[SCSI] scsi_dh: add Dell product information into rdac device handler
[SCSI] qla2xxx: remove the unused SCSI_QLOGIC_FC_FIRMWARE option
[SCSI] qla2xxx: fix printk format warnings
[SCSI] qla2xxx: Update version number to 8.02.01-k8.
[SCSI] qla2xxx: Ignore payload reserved-bits during RSCN processing.
[SCSI] qla2xxx: Additional residual-count corrections during UNDERRUN handling.
...
|
|
* Implement disk_devt() and part_devt() and use them to directly
access devt instead of computing it from ->major and ->first_minor.
Note that all references to ->major and ->first_minor outside of
block layer is used to determine devt of the disk (the part0) and as
->major and ->first_minor will continue to represent devt for the
disk, converting these users aren't strictly necessary. However,
convert them for consistency.
* Implement disk_max_parts() to avoid directly deferencing
genhd->minors.
* Update bdget_disk() such that it doesn't assume consecutive minor
space.
* Move devt computation from register_disk() to add_disk() and make it
the only one (all other usages use the initially determined value).
These changes clean up the code and will help disk->part dereference
fix and extended block device numbers.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
|
Conflicts:
arch/arm/mach-pxa/Kconfig
arch/arm/mach-pxa/pxa25x.c
arch/arm/mach-pxa/pxa27x.c
|
|
The atmel-mci driver sometimes fails data transfers like this:
mmcblk0: error -5 transferring data
end_request: I/O error, dev mmcblk0, sector 2749769
end_request: I/O error, dev mmcblk0, sector 2749777
It turns out that this might be caused by the BLKR register (which
contains the block size and the number of blocks being transfered) being
initialized too late. This patch moves the initialization of BLKR so
that it contains the correct value before the block transfer command is
sent.
This error is difficult to reproduce, but if you insert a long delay
(mdelay(10) or thereabouts) between the calls to atmci_start_command()
and atmci_submit_data(), all transfers seem to fail without this patch,
while I haven't seen any failures with this patch.
Reported-by: Hein_Tibosch <hein_tibosch@yahoo.es>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
