Commit graph

93,853 commits

Author SHA1 Message Date
Felix Fietkau
32ffb1f448 ath9k: fix compile error without debug enabled
commits 8e6f5aa250 and
db1a052b73 accidentally introduced
compile errors that happens when ath9k debug is not enabled.
This patch fixes the declaration of the inline stubs to resolve this.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:09 -04:00
Pavel Roskin
152d530d9e ath9k: remove ah->mask_reg, it's never used properly
ah->mask_reg was used to hold different data throughout the driver.
ath9k_hw_init_interrupt_masks() used it to save the value written to
AR_IMR.  ath9k_hw_set_interrupts() used it to hold the interrupt mask as
defined in enum ath9k_int.  Those masks differ in many bits.

Use ah->imask instead of ah->mask_reg in ath9k_hw_set_interrupts() and
ath9k_hw_updatetxtriglevel().  That's what the code was meant to do.
ah->imask is initialized in ath9k_start(), so we don't need to
initialize it from ah->mask_reg.

Once it's done, ah->mask_reg becomes write-only, so it's replaced with a
local variable in ath9k_hw_init_interrupt_masks().

Signed-off-by: Pavel Roskin <proski@gnu.org>
Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:08 -04:00
Pavel Roskin
3069168c82 ath9k: move imask from sc to ah
Add ah variable in the functions that didn't have it and used sc->imask.
Replace sc->sc_ah with ah in those functions.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:08 -04:00
Pavel Roskin
c81494d548 ath9k: rename symbols in enum ath9k_internal_frame_type to avoid confusion
Symbols starting with "ATH9K_INT" are also used for interrupt mask.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:08 -04:00
Luis de Bethencourt
b409894f9d ath: fix coding style/readability in ath/ar9170
This is a patch to files in ath/ar9170 that fixes a set of warnings
found by checkpatch.pl tool. A line over 80 characters, a few empty
spaces before tab and a few empty characters before a new line.

Signed-off-by: Luis de Bethencourt <luisbg@ubuntu.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:07 -04:00
Gertjan van Wingerde
4d66edc8b6 rt2x00: Add wakeup interrupt handler to rt2800pci.
This is needed to wake up the device automatically for receiving beacons,
and is required for proper powersave handling.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:06 -04:00
Gertjan van Wingerde
9e18944601 rt2x00: Add wakeup interrupt handler to rt61pci.
This is needed to wake up the device automatically for receiving beacons,
and is required for proper powersave handling.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:55:06 -04:00
Gertjan van Wingerde
5731858d00 rt2x00: Disable auto wakeup before waking up device.
In all drivers ensure that auto wakeup is disabled before waking up the device.
This is needed to prevent connection stability issues and problems in waking up
the device.

Based upon a patch from Ondrej Zary <linux@rainbow-software.org>

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:52:07 -04:00
Daniel Mack
8a64c0f6b7 libertas/sdio: 8686: set ECSI bit for 1-bit transfers
When operating in 1-bit mode, SDAT1 is used as dedicated interrupt line.
However, the 8686 will only drive this line when the ECSI bit is set in
the CCCR_IF register.

Thanks to Alagu Sankar for pointing me in the right direction.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Alagu Sankar <alagusankar@embwise.com>
Cc: Volker Ernst <volker.ernst@txtr.com>
Cc: Dan Williams <dcbw@redhat.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>
Cc: Bing Zhao <bzhao@marvell.com>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: linux-mmc@vger.kernel.org
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:52:06 -04:00
Luis de Bethencourt
cfcfe4469c ath: fix code readability in regd.c
This is a patch to the ath/regd.c file that fixes two code
readability issues. A space between to separate two defines
and the indentation inside the ath_redg_is_eeprom_valid
function.

Signed-off-by: Luis de Bethencourt <luisbg@ubuntu.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:51:04 -04:00
Luis de Bethencourt
0a4528e2ae Net: wireless: ath: fix macros coding style issue in hw.c
This is a patch to the ath/hw.c file that fixes up a warning about
macros found by the checkpatch.pl tool, that said that complex values
should be enclosed in parenthesis.

Signed-off-by: Luis de Bethencourt <luisbg@ubuntu.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 16:51:04 -04:00
John W. Linville
a124f3bed7 Merge branch 'wireless-next-2.6' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-2.6 2010-04-06 16:37:10 -04:00
Linus Torvalds
0fdf86754f Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: fix up alignf issues
2010-04-06 13:03:52 -07:00
Felix Fietkau
1144601118 ath9k: fix double calls to ath_radio_enable
With the enable_radio being uninitialized, ath_radio_enable() might be
called twice, which can leave some hardware in an undefined state.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-04-06 15:53:33 -04:00
Linus Torvalds
14e71e4fb9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] hpwdt - fix lower timeout limit
  [WATCHDOG] iTCO_wdt: TCO Watchdog patch for additional Intel Cougar Point DeviceIDs
  [WATCHDOG] doc: Fix use of WDIOC_SETOPTIONS ioctl.
  [WATCHDOG] doc: watchdog simple example: don't fail on fsync()
  [WATCHDOG] set max63xx driver as ARM only
  [WATCHDOG] powerpc: pika_wdt ident cannot be const
2010-04-06 09:56:40 -07:00
Mark Brown
b5874f33bb wm831x_power: Use genirq
Since the WM831x core has been converted to use genirq for the
interrupt controller there is no longer any need for chip specific
wrappers for IRQ operations. Convert to use genirq directly.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2010-04-06 20:51:09 +04:00
Marek Vasut
e3e8d1c93f Driver for Zipit Z2 battery chip
This patch adds driver for Zipit Z2 battery chip called AER915. No
details are known about the chip. The chip is available through I2C bus
at address 0x55 and it's register 0x02 contains battery voltage.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2010-04-06 20:35:58 +04:00
Wolfram Sang
a009d29ea1 ds2782_battery: Fix clientdata on removal
Probably due to a copy & paste bug, clientdata was set again to the data
structure (which is freed immediately afterwards) when it should be
NULLed. Just remove the calls as the i2c-core does this automatically
now.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2010-04-06 20:07:05 +04:00
Linus Torvalds
ab195c58b8 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: unlock HPA if device shrunk
  libata: disable NCQ on Crucial C300 SSD
  libata: don't whine on spurious IRQ
2010-04-06 08:36:31 -07:00
Linus Torvalds
cb4361c1dc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (37 commits)
  smc91c92_cs: fix the problem of "Unable to find hardware address"
  r8169: clean up my printk uglyness
  net: Hook up cxgb4 to Kconfig and Makefile
  cxgb4: Add main driver file and driver Makefile
  cxgb4: Add remaining driver headers and L2T management
  cxgb4: Add packet queues and packet DMA code
  cxgb4: Add HW and FW support code
  cxgb4: Add register, message, and FW definitions
  netlabel: Fix several rcu_dereference() calls used without RCU read locks
  bonding: fix potential deadlock in bond_uninit()
  net: check the length of the socket address passed to connect(2)
  stmmac: add documentation for the driver.
  stmmac: fix kconfig for crc32 build error
  be2net: fix bug in vlan rx path for big endian architecture
  be2net: fix flashing on big endian architectures
  be2net: fix a bug in flashing the redboot section
  bonding: bond_xmit_roundrobin() fix
  drivers/net: Add missing unlock
  net: gianfar - align BD ring size console messages
  net: gianfar - initialize per-queue statistics
  ...
2010-04-06 08:34:06 -07:00
Tejun Heo
445d211b0d libata: unlock HPA if device shrunk
Some BIOSes don't configure HPA during boot but do so while resuming.
This causes harddrives to shrink during resume making libata detach
and reattach them.  This can be worked around by unlocking HPA if old
size equals native size.

Add ATA_DFLAG_UNLOCK_HPA so that HPA unlocking can be controlled
per-device and update ata_dev_revalidate() such that it sets
ATA_DFLAG_UNLOCK_HPA and fails with -EIO when the above condition is
detected.

This patch fixes the following bug.

  https://bugzilla.kernel.org/show_bug.cgi?id=15396

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Oleksandr Yermolenko <yaa.bta@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-06 10:55:33 -04:00
Tejun Heo
68b0ddb289 libata: disable NCQ on Crucial C300 SSD
Crucial said,

  Thank you for contacting us. We know that with our M225 line of SSDs
  you sometimes need to disable NCQ (native command queuing) to avoid
  just the type of errors you're seeing. Our recommendation for the
  M225 is to add libata.force=noncq to your Linux kernel boot options,
  under the kernel ATA library option.

  I have sent your feedback to the engineers working on the C300, and
  asked them to please pass it on to the firmware team. I have been
  notified that they are in the process of testing and finalizing a
  new firmware version, that you can expect to see released around the
  end of April. We’ll keep you posted as to when it will be available
  for download.

So, turn off NCQ on the drive w/ the current firmware revision.

Reported in the following bug.

  https://bugzilla.kernel.org/show_bug.cgi?id=15573

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: lethalwp@scarlet.be
Reported-by: Luke Macken <lmacken@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-06 10:55:06 -04:00
Tejun Heo
c710f78532 libata: don't whine on spurious IRQ
On configurations where IRQ line is shared with a different
controller, spurious IRQs may happen continuously.  The message was
put there primarily for debugging anyway.  Kill it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-06 10:54:38 -04:00
Thomas Mingarelli
8ba42bd88c [WATCHDOG] hpwdt - fix lower timeout limit
[Novell Bug 581103] HP Watchdog driver has arbitrary (wrong) timeout limits.
Fix the lower timeout limit to a more appropriate value.

Signed-off-by: Thomas Mingarelli <Thomas.Mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: stable <stable@kernel.org>
2010-04-06 14:37:43 +00:00
Seth Heasley
4c7d849204 [WATCHDOG] iTCO_wdt: TCO Watchdog patch for additional Intel Cougar Point DeviceIDs
This patch adds the Intel Cougar Point PCH LPC Controller DeviceIDs for iTCO Watchdog.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: stable <stable@kernel.org>
2010-04-06 14:37:34 +00:00
Ralf Baechle
4cf46eaa5e NET: sb1250: Fix compile warning in driver
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 04:03:01 -07:00
Matt Carlson
7ae554e555 tg3: Update version to 3.109
This patch updates the tg3 version to 3.109.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:04 -07:00
Matt Carlson
7705736f5f tg3: Remove tg3_dump_state()
The tg3_dump_state() function is commented out and doesn't get used much
when debugging efforts are underway.  The chip architecture has also
changed enough that any debugging effort that might use it would have to
tailor it to the capabilities of the hardware.  This patch just removes
the function entirely.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:04 -07:00
Matt Carlson
859a58879d tg3: Cleanup if codestyle
This patch cleans up the code style as it pertains to if statements.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:03 -07:00
Matt Carlson
33f401aec7 tg3: The case of switches
This patch fixes checkpatch errors related to switch statements.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:02 -07:00
Matt Carlson
c6cdf43631 tg3: Whitespace, constant, and comment updates
This patch fixes whitespace errors, preprocessor definition placement
oddities and updates comments.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:02 -07:00
Matt Carlson
184b89044f tg3: Use VPD fw version when present
This patch extracts the firmware version from the VPD area and changes
the code to prefer that version version over the manually extracted
version.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:01 -07:00
Matt Carlson
75f9936e11 tg3: Prepare FW version code for VPD versioning
The code that extracts the firmware version from the device's NVRAM
assumes the firmware version member is a clean slate.  The following
patch will add code to extract the firmware version from the VPD area
of NVRAM, so this assumption will no longer be true.  This patch adjusts
the versioning code to respect the VPD version if it exists.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:01 -07:00
Matt Carlson
5129c3a3fa tg3: Fix message 80 char violations
Commit 05dbe00538, "Use (pr|netdev)_<level>
macro helpers" extended some of the message lines longer than 80 chars.
This patch reels the line lengths back in.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:00 -07:00
Matt Carlson
ab96b241fd tg3: netdev_err() => dev_err()
Some uses of netdev_err() happen before the device has been registered.
This will cause the messages to be prepended with "(unregistered
net_device)" strings.  We can clean up the message by using dev_err()
instead.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:58:00 -07:00
Matt Carlson
2445e461ce tg3: Replace pr_err with sensible alternatives
All the instances of pr_err() in the tg3 driver have better
alternatives.  This patch replaces all pr_err() calls.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:57:59 -07:00
Matt Carlson
6d40db7bea tg3: Restore likely() check in tg3_poll_msix()
When creating the new tg3_poll_msix() function, the likely() compiler
hint was dropped.  This patch reintroduces it.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:57:58 -07:00
Matt Carlson
c1f614a121 tg3: Fix MII_TG3_DSP_EXP8 offset
The offset to the MII_TG3_DSP_EXP8 register is incorrect.  Fix it.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 03:57:58 -07:00
H Hartley Sweeten
9d32c30542 Input: matrix_keypad - allow platform to disable key autorepeat
In an embedded system the matrix_keypad driver might be used to
interface with an external control panel and not an actual keyboard.
On the control panel some of the keys could be used to turn on/off
various functions.  If key autorepeat is enabled this causes the
function to quickly toggle between the on and off states and makes
operation difficult.

Add an option in the platform-specific data to disable the key
autorepeat.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-04-05 23:02:00 -07:00
Chase Douglas
5e28d8eb68 Input: ALPS - add signature for HP Pavilion dm3 laptops
Tested by a user running Ubuntu 9.10 in the following bug report.

BugLink: http://bugs.launchpad.net/bugs/545307

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Cc: stable@kernel.org
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-04-05 23:01:55 -07:00
Dominik Brodowski
2c860a1101 Input: i8042 - spelling fix
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-04-05 23:01:20 -07:00
Alex Deucher
643acacf02 drm/radeon/kms: fix washed out image on legacy tv dac
bad cast was overwriting the tvdac adj values
Fixes fdo bug 27478

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 14:28:43 +10:00
Pauli Nieminen
c96af79e34 drm/ttm: Add sysfs interface to control pool allocator.
Sysfs interface allows user to configure pool allocator functionality and
change limits for the size of pool.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:36:18 +10:00
Pauli Nieminen
975efdb1bf drm/ttm: Use set_pages_array_wc instead of set_memory_wc.
Using single call to set multiple pages to wc reduces number of expensive cache
flushes.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:36:11 +10:00
Pauli Nieminen
bf62acdef8 drm/nouveau: Add ttm page pool debugfs file.
ttm_page_pool file is hooked ttm_page_alloc_debugfs for pool
allocator state.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:35:58 +10:00
Pauli Nieminen
8d7cddcd7f drm/radeon/kms: Add ttm page pool debugfs file.
ttm_page_pool file is hooked ttm_page_alloc_debugfs for pool
allocator state.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:35:52 +10:00
Pauli Nieminen
0745866165 drm/ttm: Add debugfs output entry to pool allocator.
ttm_page_alloc_debugfs can be registered to output the state
of pools.

Debugfs file will output number of pages freed from the pool,
number of pages in pool now and the lowes number of pages in
pool since previous shrink.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:35:45 +10:00
Pauli Nieminen
1403b1a38e drm/ttm: add pool wc/uc page allocator V3
On AGP system we might allocate/free routinely uncached or wc memory,
changing page from cached (wb) to uc or wc is very expensive and involves
a lot of flushing. To improve performance this allocator use a pool
of uc,wc pages.

Pools are protected with spinlocks to allow multiple threads to allocate pages
simultanously. Expensive operations are done outside of spinlock to maximize
concurrency.

Pools are linked lists of pages that were recently freed. mm shrink callback
allows kernel to claim back pages when they are required for something else.

Fixes:
* set_pages_array_wb handles highmem pages so we don't have to remove them
  from pool.
* Add count parameter to ttm_put_pages to avoid looping in free code.
* Change looping from _safe to normal in pool fill error path.
* Initialize sum variable and make the loop prettier in get_num_unused_pages.

* Moved pages_freed reseting inside the loop in ttm_page_pool_free.
* Add warning comment about spinlock context in ttm_page_pool_free.

Based on Jerome Glisse's and Dave Airlie's pool allocator.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:35:26 +10:00
Jerome Glisse
90aca4d274 drm/radeon/kms: simplify & improve GPU reset V2
This simplify and improve GPU reset for R1XX-R6XX hw, it's
not 100% reliable here are result:
- R1XX/R2XX works bunch of time in a row, sometimes it
  seems it can work indifinitly
- R3XX/R3XX the most unreliable one, sometimes you will be
  able to reset few times, sometimes not even once
- R5XX more reliable than previous hw, seems to work most
  of the times but once in a while it fails for no obvious
  reasons (same status than previous reset just no same
  happy ending)
- R6XX/R7XX are lot more reliable with this patch, still
  it seems that it can fail after a bunch (reset every
  2sec for 3hour bring down the GPU & computer)

This have been tested on various hw, for some odd reasons
i wasn't able to lockup RS480/RS690 (while they use to
love locking up).

Note that on R1XX-R5XX the cursor will disapear after
lockup haven't checked why, switch to console and back
to X will restore cursor.

Next step is to record the bogus command that leaded to
the lockup.

V2 Fix r6xx resume path to avoid reinitializing blit
module, use the gpu_lockup boolean to avoid entering
inifinite waiting loop on fence while reiniting the GPU

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:21:11 +10:00
Jerome Glisse
a2d07b7438 drm/radeon/kms: rename gpu_reset to asic_reset
Patch rename gpu_reset to asic_reset in prevision of having
gpu_reset doing more stuff than just basic asic reset.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06 11:21:04 +10:00