Currently the SDHCI driver works with PCI accessors (write{l,b,w} and
read{l,b,w}).

With this patch drivers may change memory accessors, so that we can
support hosts with "weird" IO memory access requirments.

For example, in "FSL eSDHC" SDHCI hardware all registers are 32 bit
width, with big-endian addressing. That is, readb(0x2f) should turn
into readb(0x2c), and readw(0x2c) should be translated to
le16_to_cpu(readw(0x2e)).
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some cards are not able to send the data token in time, but
miss the time frame for some bits(!). So synchronize to the
start of the token.
Signed-off-by: NWolfgang Muees <wolfgang.mues@auerswald.de>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

It is necessary to wait for bus power before sending
any commands.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Data transfers on third OMAP3 MMC controller don't work
because DMA line numbers are only defined for MMC1 and MMC2.
Fix that and store line numbers in mmc_omap_host structure
to reduce code size.
Tested on OMAP3 pandora board.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Turn off the bus power at suspend.
Signed-off-by: NJarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Allow slot_name to be the same as the other OMAP
driver, by removing the redundant "slot:" prefix.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Allow a cover switch to be used to cause a rescan of the
MMC slot.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NJarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Instead of using the bounce buffer, using scatter-gather emulation
(as in the OMAP1/2 MMC driver) removes the need of one extra memory
copy and improves performance.
Signed-off-by: NJuha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some MMC commands result in the card becoming busy after
the response is received.  This needs to be specified
for the omap_hsmmc host controller, which is what this
patch does.  However, the effect is that some commands
with no data will cause a Transfer Complete (TC) interrupt
in addition to the Command Complete (CC) interrupt.
In order to deal with that, the irq handler has needed
a few changes also.

The benefit of this change is that the omap_hsmmc host
controller driver now waits for the TC interrupt while
the card is busy, so the mmc_block driver needs to poll
the card status just once instead of repeatedly.
i.e. the net result is more sleep and less cpu.

The command sequence for open-ended multi-block write
with DMA is now:

	Issue write command CMD25
	Receive CC interrupt
	Data is sent
	Receive TC interrupt (DMA is done)
	Issue stop command CMD12
	Receive CC interrupt
	Card is busy
	Receive TC interrupt
	Card is now ready for next transfer
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NJarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Nicolas Pitre accepted to look after the mvsdio driver.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

This supports MMC/SD/SDIO currently found on the Kirkwood 88F6281 and
88F6192 SoC controllers.
Signed-off-by: NNicolas Pitre <nico@marvell.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

drivers/mmc/host/tmio_mmc.h: In function 'tmio_mmc_kmap_atomic':
drivers/mmc/host/tmio_mmc.h:147: error: implicit declaration of function 'kmap_atomic'
drivers/mmc/host/tmio_mmc.h:147: error: 'KM_BIO_SRC_IRQ' undeclared (first use in this function)
drivers/mmc/host/tmio_mmc.h: In function 'tmio_mmc_kunmap_atomic':
drivers/mmc/host/tmio_mmc.h:153: error: implicit declaration of function 'kunmap_atomic'
drivers/mmc/host/tmio_mmc.h:153: error: 'KM_BIO_SRC_IRQ' undeclared (first use in this function)
Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Update the tmio_mmc code to call mmc_free_host() when
done using the private data. Without this fix the driver
frees memory and then keeps on using it as private data.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Acked-by: NIan Molton <ian@mnementh.co.uk>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Update the tmio_mmc code to use resource_size(). With this
patch applied the correct resource size is passed to ioremap().
Signed-off-by: NMagnus Damm <damm@opensource.se>
Acked-by: NIan Molton <ian@mnementh.co.uk>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some SD cards have very high timeouts in SPI mode.
So adjust the timeouts from theory to practice.
Signed-off-by: NWolfgang Muees <wolfgang.mues@auerswald.de>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some cards are slower than the standard allows and need more
time to respond to a command. Max. observed number of bytes
was 12.
Signed-off-by: NWolfgang Muees <wolfgang.mues@auerswald.de>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Allow the platform data structures to specify spi mode 3
(if there is a pullup on the clock line or the spi hardware
is not able to serve spi mode 0).
Signed-off-by: NWolfgang Muees <wolfgang.mues@auerswald.de>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Domain change of the sdhci development list.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

During mmc unsafe resume, choose the right voltage for the card after
powerup.

Although this has not seen to cause trouble, it's the wrong behaviour.
Signed-off-by: NBalaji Rao <balajirrao@openmoko.org>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Most registers lose its state when the processor wakes up from sleep state.
Thus registers should be initialized, when the processor wakes up. However the
current hsmmc 'resume' function doesn't consider this issue and finally makes
deadlock. So this patch fixes this problem.
Signed-off-by: NKim Kyuwon <chammoru@gmail.com>
Signed-off-by: NAdrian Hunter <ext-adrian.hunter@nokia.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Remove code that turns MMC1 power back on after it
has been powered off (when the voltage is 1.8V).

The offending code is not necessary because the
host controller bus voltage is initialized to
3V when probing or resuming.  Note that MMC powers up
with the highest voltage available (see mmc_power_up())
which will be 3V also.
Signed-off-by: NAdrian Hunter <ext-adrian.hunter@nokia.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Extended CSD is a MMC card register.  As increasingly interesting
fields are being added to Extended CSD, it is helpful to see its
value.  Note that SD cards do not have an Extended CSD
register, so it is MMC only.
Signed-off-by: NAdrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Currently we are using an explicit udev rule to trigger loading of the
mmc-block module when an MMC or SD card is detected:

    SUBSYSTEM=="mmc", RUN+="/sbin/modprobe -Qba mmc-block"

It makes much more sense for the mmc bus driver and the mmc-block module to
share MODALIAS information so that they are linked automatically.

There is no real information of use in the MMC system at the current time.
All devices inserted require us to load the mmc-block device.  Until such
time as useful parameters exist simply reflect the module linkage via
the module alias below:

	mmc:block
Signed-off-by: NAndy Whitcroft <apw@canonical.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The delayed work item mmc_host.detect is now cancelled before flushing
the work queue. This takes care of cases when delayed_work was scheduled
for mmc_host.detect, but not yet placed in the work queue.
Signed-off-by: NJorg Schummer <ext-jorg.2.schummer@nokia.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

With a sufficiently new compiler and binutils, code which wasn't
previously generating .eh_frame sections has begun to.  Certain
architectures (powerpc, in this case) may generate unexpected relocation
formats in response to this, preventing modules from loading.

While the new relocation types should probably be handled, revert to the
previous behaviour with regards to generation of .eh_frame sections.

(This was reported against Fedora, which appears to be the only distro
doing any building against gcc-4.4 at present: RH bz#486545.)
Signed-off-by: NKyle McMartin <kyle@redhat.com>
Acked-by: NRoland McGrath <roland@redhat.com>
Cc: Alexandre Oliva <aoliva@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Revert the change to the orphan dates of Windows 95, DOS, compression.
Add a new orphan date for OS/2.
Signed-off-by: NJody McIntyre <scjody@sun.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits)
  ucc_geth: Fix oops when using fixed-link support
  dm9000: locking bugfix
  net: update dnet.c for bus_id removal
  dnet: DNET should depend on HAS_IOMEM
  dca: add missing copyright/license headers
  nl80211: Check that function pointer != NULL before using it
  sungem: missing net_device_ops
  be2net: fix to restore vlan ids into BE2 during a IF DOWN->UP cycle
  be2net: replenish when posting to rx-queue is starved in out of mem conditions
  bas_gigaset: correctly allocate USB interrupt transfer buffer
  smsc911x: reset last known duplex and carrier on open
  sh_eth: Fix mistake of the address of SH7763
  sh_eth: Change handling of IRQ
  netns: oops in ip[6]_frag_reasm incrementing stats
  net: kfree(napi->skb) => kfree_skb
  net: fix sctp breakage
  ipv6: fix display of local and remote sit endpoints
  net: Document /proc/sys/net/core/netdev_budget
  tulip: fix crash on iface up with shirq debug
  virtio_net: Make virtio_net support carrier detection
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix crash with /proc/iomem
  sparc64: Reschedule KGDB capture to a software interrupt.
  sbus: Auto-load openprom module when device opened.

This patch fixes bug #12208:

  Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12208
  Subject         : uml is very slow on 2.6.28 host

This turned out to be not a scheduler regression, but an already
existing problem in ptrace being triggered by subtle scheduler
changes.

The problem is this:

 - task A is ptracing task B
 - task B stops on a trace event
 - task A is woken up and preempts task B
 - task A calls ptrace on task B, which does ptrace_check_attach()
 - this calls wait_task_inactive(), which sees that task B is still on the runq
 - task A goes to sleep for a jiffy
 - ...

Since UML does lots of the above sequences, those jiffies quickly add
up to make it slow as hell.

This patch solves this by not rescheduling in read_unlock() after
ptrace_stop() has woken up the tracer.

Thanks to Oleg Nesterov and Ingo Molnar for the feedback.
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
CC: stable@kernel.org
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc:
  powerpc/mm: Fix Respect _PAGE_COHERENT on classic ppc32 SW TLB load machines

Grant picked up the wrong version of "Respect _PAGE_COHERENT on classic
ppc32 SW" (commit a4bd6a93)

It was missing the code to actually deal with the fixup of
_PAGE_COHERENT based on the CPU feature.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

commit b1c4a9dd ("ucc_geth: Change
uec phy id to the same format as gianfar's") introduced a regression
in the ucc_geth driver that causes this oops when fixed-link is used:

Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc0151270
Oops: Kernel access of bad area, sig: 11 [#1]
TMCUTU
NIP: c0151270 LR: c0151270 CTR: c0017760
REGS: cf81fa60 TRAP: 0300   Not tainted  (2.6.29-rc8)
MSR: 00009032 <EE,ME,IR,DR>  CR: 24024042  XER: 20000000
DAR: 00000000, DSISR: 20000000
TASK = cf81cba0[1] 'swapper' THREAD: cf81e000
GPR00: c0151270 cf81fb10 cf81cba0 00000000 c0272e20 c025f354 00001e80
cf86b08c
GPR08: d1068200 cffffb74 06000000 d106c200 42024042 10085148 0fffd000
0ffc81a0
GPR16: 00000001 00000001 00000000 007ffeb0 00000000 0000c000 cf83f36c
cf83f000
GPR24: 00000030 cf83f360 cf81fb20 00000000 d106c200 20000000 00001e80
cf83f360
NIP [c0151270] ucc_geth_open+0x330/0x1efc
LR [c0151270] ucc_geth_open+0x330/0x1efc
Call Trace:
[cf81fb10] [c0151270] ucc_geth_open+0x330/0x1efc (unreliable)
[cf81fba0] [c0187638] dev_open+0xbc/0x12c
[cf81fbc0] [c0187e38] dev_change_flags+0x8c/0x1b0

This patch fixes the issue by removing offending (and somewhat
duplicate) code from init_phy() routine, and changes _probe()
function to use uec_mdio_bus_name().

Also, since we fully construct phy_bus_id in the _probe() routine,
we no longer need ->phy_address and ->mdio_bus fields in
ucc_geth_info structure.

I wish the patch would be a bit shorter, but it seems like the only
way to fix the issue in a sane way. Luckily, the patch has been
tested with real PHYs and fixed-link, so no further regressions
expected.
Reported-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Tested-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This fixes a locking bug in the dm9000 driver.  It calls
request_irq() without setting IRQF_DISABLED ... which is
correct for handlers that support IRQ sharing, since that
behavior is not guaranteed for shared IRQs.  However, its
IRQ handler then wrongly assumes that IRQs are blocked.
So the fix just uses the right spinlock primitives in the
IRQ handler.

NOTE:  this is a classic example of the type of bug which
lockdep currently masks by forcibly setting IRQF_DISABLED
on IRQ handlers that did not request that flag.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>