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8c0d3a02c1
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Jiang Liu 8c0d3a02c1 PCI: Add accessors for PCI Express Capability 
The PCI Express Capability (PCIe spec r3.0, sec 7.8) comes in two
versions, v1 and v2.  In v1 Capability structures (PCIe spec r1.0 and
r1.1), some fields are optional, so the structure size depends on the
device type.

This patch adds functions to access this capability so drivers don't
have to be aware of the differences between v1 and v2.  Note that these
new functions apply only to the "PCI Express Capability," not to any of
the other "PCI Express Extended Capabilities" (AER, VC, ACS, MFVC, etc.)

Function pcie_capability_read_word/dword() reads the PCIe Capabilities
register and returns the value in the reference parameter "val".  If
the PCIe Capabilities register is not implemented on the PCIe device,
"val" is set to 0.

Function pcie_capability_write_word/dword() writes the value to the
specified PCIe Capability register.

Function pcie_capability_clear_and_set_word/dword() sets and/or clears bits
of a PCIe Capability register.

[bhelgaas: changelog, drop "pci_" prefixes, don't export
pcie_capability_reg_implemented()]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-08-23 09:41:20 -06:00
..
accessibility
acpi Merge branch 'linux-next' of git://cavan.codon.org.uk/platform-drivers-x86 2012-07-30 11:54:53 -07:00
amba Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
ata ARM: arm-soc Marvell Orion device-tree updates 2012-08-02 11:50:24 -07:00
atm
auxdisplay
base Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2012-07-27 11:15:03 -04:00
block Merge branch 'for-3.6/drivers' of git://git.kernel.dk/linux-block 2012-08-01 09:06:47 -07:00
bluetooth
cdrom
char This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
clk clk: validate pointer in __clk_disable() 2012-07-30 17:25:13 -07:00
clocksource arm-soc: new SoC support 2012-07-23 16:31:31 -07:00
connector
cpufreq ARM: arm-soc soc updates, take 2 2012-07-30 09:45:53 -07:00
cpuidle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
crypto This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
dca
devfreq
dio
dma SuperH fixes for 3.6-rc1 merge window 2012-08-02 11:45:42 -07:00
edac Merge branch 'devel' 2012-07-29 21:11:05 -03:00
eisa
extcon MFD bits for the 3.6 merge window. 2012-07-30 12:41:17 -07:00
firewire - Small fixes and optimizations. 2012-07-30 09:32:39 -07:00
firmware This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
gpio MFD bits for the 3.6 merge window. 2012-07-30 12:41:17 -07:00
gpu Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-30 10:06:23 -07:00
hid Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-07-31 18:47:44 -07:00
hsi
hv This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2012-07-30 10:10:26 -07:00
hwspinlock
i2c This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
ide
idle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
ieee802154
iio
infiniband Merge branches 'cma', 'ipoib', 'ocrdma' and 'qib' into for-next 2012-07-30 07:47:27 -07:00
input This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
iommu PCI: Introduce pci_pcie_type(dev) to replace pci_dev->pcie_type 2012-08-23 09:40:57 -06:00
isdn mISDN: Bugfix only few bytes are transfered on a connection 2012-07-29 23:18:30 -07:00
leds leds-lp8788: forgotten unlock at lp8788_led_work 2012-07-27 08:16:07 +08:00
lguest
macintosh
md Additional md update for 3.6 2012-08-02 11:34:40 -07:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-07-31 18:47:44 -07:00
memory
memstick
message drivers/message/i2o/i2o_config.c: bound allocation 2012-07-30 17:25:17 -07:00
mfd This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
misc Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-30 17:25:34 -07:00
mmc Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm 2012-08-01 16:41:07 -07:00
mtd Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm 2012-08-01 16:41:07 -07:00
net PCI: Introduce pci_pcie_type(dev) to replace pci_dev->pcie_type 2012-08-23 09:40:57 -06:00
nfc
nubus
of Devicetree updates for 3.6 2012-07-24 14:07:22 -07:00
oprofile
parisc PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
parport
pci PCI: Add accessors for PCI Express Capability 2012-08-23 09:41:20 -06:00
pcmcia Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
pinctrl Pin control changes for v3.6: 2012-07-24 14:05:46 -07:00
platform Platform: OLPC: move global variables into priv struct 2012-07-31 23:27:31 -04:00
pnp
power Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc 2012-08-02 11:52:39 -07:00
pps pps: return PTR_ERR on error in device_create 2012-07-30 17:25:21 -07:00
ps3
ptp
pwm pwm: pwm-tiehrpwm: PWM driver support for EHRPWM 2012-07-26 07:45:20 +02:00
rapidio
regulator regulator: Fix an s5m8767 build failure 2012-07-31 00:51:09 +02:00
remoteproc A batch of remoteproc patches for 3.6: 2012-07-26 16:19:08 -07:00
rpmsg A batch of remoteproc patches for 3.6: 2012-07-26 16:19:08 -07:00
rtc Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-26 18:09:01 -07:00
sbus
scsi Merge branch 'for-3.6/core' of git://git.kernel.dk/linux-block 2012-08-01 09:02:41 -07:00
sfi
sh Merge branch 'common/irqdomain' into sh-latest 2012-08-01 17:14:52 +09:00
sn
spi Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm 2012-08-01 16:41:07 -07:00
ssb
staging Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc 2012-08-02 11:52:39 -07:00
target Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
tc
thermal The tag contains just a few battery-related changes for v3.6. It's is 2012-07-31 18:08:25 -07:00
tty serial: sh-sci: fix compilation breakage, when DMA is enabled 2012-08-01 13:48:54 +09:00
uio
usb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
uwb
vfio vfio: Add PCI device driver 2012-07-31 08:16:24 -06:00
vhost vhost: make vhost work queue visible 2012-07-22 01:22:23 +03:00
video fbdev updates for 3.6 2012-08-01 10:45:12 -07:00
virt
virtio
vlynq
vme
w1 Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
watchdog ARM: arm-soc Marvell Orion device-tree updates 2012-08-02 11:50:24 -07:00
xen PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
zorro
Kconfig vfio: VFIO core 2012-07-31 08:16:22 -06:00
Makefile vfio: VFIO core 2012-07-31 08:16:22 -06:00