alistair23-linux/drivers
Bruce Allan e08f626b33 e1000e: workaround DMA unit hang on I218
At 1000Mbps link speed, one of the MAC's internal clocks can be stopped for
up to 4us when entering K1 (a power mode of the MAC-PHY interconnect).  If
the MAC is waiting for completion indications for 2 DMA write requests into
Host memory (e.g. descriptor writeback or Rx packet writing) and the
indications occur while the clock is stopped, both indications will be
missed by the MAC causing the MAC to wait for the completion indications
and be unable to generate further DMA write requests.  This results in an
apparent hardware hang.

Work-around the issue by disabling the de-assertion of the clock request
when 1000Mbps link is acquired (K1 must be disabled while doing this).

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-05 01:01:43 -08:00
..
accessibility
acpi ACPI and power management fixes for 3.9-rc1 2013-02-25 21:25:17 -08:00
amba
ata 1) apply, and then revert, the sysfs export of ATA host controller number. 2013-02-24 17:32:15 -08:00
atm
auxdisplay
base The sweeping change is to make add_taint() explicitly indicate whether to disable 2013-02-25 15:41:43 -08:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2013-03-01 13:52:03 -05:00
block Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
bus
cdrom
char Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-02-25 16:46:44 -08:00
clk arm-soc: device tree conversions 2013-02-21 15:38:49 -08:00
clocksource arm-soc: virtualization changes 2013-02-21 15:40:16 -08:00
connector proc connector: reject unprivileged listener bumps 2013-02-27 13:08:35 -05:00
cpufreq ACPI and power management fixes for 3.9-rc1 2013-02-25 21:25:17 -08:00
cpuidle arm-soc: soc-specific updates 2013-02-21 15:27:22 -08:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2013-02-25 15:56:15 -08:00
dca
devfreq
dio
dma Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-02-26 09:24:48 -08:00
edac Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
eisa
extcon Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
firmware memory-hotplug: remove /sys/firmware/memmap/X sysfs 2013-02-23 17:50:12 -08:00
gpio GPIO changes for Linux 3.9 2013-02-26 09:35:29 -08:00
gpu Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-02-25 16:46:44 -08:00
hid Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2013-02-24 17:35:10 -08:00
hsi
hv Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
hwmon ACPI and power management updates for 3.9-rc1 2013-02-20 11:26:56 -08:00
hwspinlock
i2c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
ide Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
idle Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-02-22 19:25:09 -08:00
iio Staging tree update for 3.9-rc1 2013-02-21 12:11:44 -08:00
infiniband Main batch of InfiniBand/RDMA changes for 3.9: 2013-02-26 11:41:08 -08:00
input This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
iommu IOMMU Updates for Linux v3.9 2013-02-26 11:09:17 -08:00
ipack Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
irqchip arm-soc: cleanups 2013-02-21 14:58:40 -08:00
isdn isdn: hisax: add missing usb_free_urb 2013-02-26 17:33:56 -05:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2013-02-26 09:29:02 -08:00
lguest tty/serial patches for 3.9-rc1 2013-02-21 13:41:04 -08:00
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-02-23 17:09:55 -08:00
mailbox
md drivers/md/persistent-data/dm-transaction-manager.c: rename HASH_SIZE 2013-02-23 17:50:08 -08:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2013-02-24 17:35:10 -08:00
memory
memstick This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
message
mfd This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
misc Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-02-26 09:41:53 -08:00
mmc MMC highlights for 3.9: 2013-02-26 09:31:09 -08:00
mtd Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-02-26 09:24:48 -08:00
net e1000e: workaround DMA unit hang on I218 2013-03-05 01:01:43 -08:00
nfc
ntb
nubus
of Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
oprofile
parisc parisc: led driver requires CONFIG_VM_EVENT_COUNTERS 2013-02-20 22:51:52 +01:00
parport Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2013-02-21 17:54:03 -08:00
pci PCI changes for the v3.9 merge window: 2013-02-25 21:18:18 -08:00
pcmcia Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
pinctrl arm-soc: device tree conversions 2013-02-21 15:38:49 -08:00
platform Staging tree update for 3.9-rc1 2013-02-21 12:11:44 -08:00
pnp
power Staging tree update for 3.9-rc1 2013-02-21 12:11:44 -08:00
pps
ps3
ptp
pwm pwm: Changes for v3.9-rc1 2013-02-26 09:34:29 -08:00
rapidio
regulator Merge remote-tracking branch 'regulator/topic/tps65090' into regulator-next 2013-02-19 12:43:12 +00:00
remoteproc arm-soc: multiplatform support 2013-02-21 15:20:41 -08:00
rpmsg Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
rtc This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
s390 Merge tag 'kvm-3.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-02-24 13:07:18 -08:00
sbus
scsi 1) apply, and then revert, the sysfs export of ATA host controller number. 2013-02-24 17:32:15 -08:00
sfi
sh
sn
spi arm-soc: soc-specific updates 2013-02-21 15:27:22 -08:00
ssb
staging Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-02-25 16:46:44 -08:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-02-26 11:42:23 -08:00
tc
thermal
tty Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-02-25 16:46:44 -08:00
uio
usb This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
uwb
vfio
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-02-26 11:42:23 -08:00
video pwm: Changes for v3.9-rc1 2013-02-26 09:34:29 -08:00
virt
virtio
vlynq
vme
w1 Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
watchdog This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
xen Features: 2013-02-24 16:18:31 -08:00
zorro
Kconfig Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-02-23 17:09:55 -08:00