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Bruce Allan 2b6b168d52 e1000e: access multiple PHY registers on same page at the same time 
Doing a PHY page select can take a long time, relatively speaking. This
can cause a significant delay when updating a number of PHY registers on
the same page by unnecessarily setting the page for each PHY access. For
example when going to Sx, all the PHY wakeup registers (WUC, RAR[], MTA[],
SHRAR[], IP4AT[], IP6AT[], etc.) on 82577/8/9 need to be updated which
takes a long time which can cause issues when suspending.

This patch introduces new PHY ops function pointers to allow callers to
set the page directly and do any number of PHY accesses on that page.
This feature is currently only implemented for 82577, 82578 and 82579
PHYs for both the normally addressed registers as well as the special-
case addressing of the PHY wakeup registers on page 800. For the latter
registers, the existing function for accessing the wakeup registers has
been divided up into three- 1) enable access to the wakeup register page,
2) perform the register access and 3) disable access to the wakeup register
page. The two functions that enable/disable access to the wakeup register
page are necessarily available to the caller so that the caller can restore
the value of the Port Control (a.k.a. Wakeup Enable) register after the
wakeup register accesses are done.

All instances of writing to multiple PHY registers on the same page are
updated to use this new method and to acquire any PHY locking mechanism
before setting the page and performing the register accesses, and release
the locking mechanism afterward.

Some affiliated magic number cleanup is done as well.

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>
History 2011-06-09 20:33:36 -07:00
..
accessibility drop explicit include of autoconf.h 2009-12-12 13:08:15 +01:00
acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-05-29 11:19:16 -07:00
amba ARM: 6829/1: amba: make hardcoded periphid override hardware 2011-05-26 10:33:34 +01:00
ata Merge branch 'for-2.6.40/core' of git://git.kernel.dk/linux-2.6-block 2011-05-25 09:14:07 -07:00
atm net: remove interrupt.h inclusion from netdevice.h 2011-06-06 22:55:11 -07:00
auxdisplay Fix common misspellings 2011-03-31 11:26:23 -03:00
base mm: per-node vmstat: show proper vmstats 2011-05-25 08:39:07 -07:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem 2011-06-08 13:44:21 -04:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2011-06-04 08:11:26 +09:00
bluetooth Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
cdrom block: fix mismerge of the DISK_EVENT_MEDIA_CHANGE removal 2011-06-02 05:29:19 +09:00
char virtio console: don't manually set or finalize VIRTIO_CONSOLE_F_MULTIPORT. 2011-05-30 11:14:13 +09:30
clk CLKDEV: Fix clkdev return value for NULL clk case 2011-04-30 10:14:08 +01:00
clocksource Revert "clocksource: sh_cmt: Runtime PM support" 2011-05-31 15:26:42 +09:00
connector connector: fix skb double free in cn_rx_skb() 2011-04-12 14:38:57 -07:00
cpufreq cpufreq: make DB8500 cpufreq driver compile 2011-05-24 22:20:14 +02:00
cpuidle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2011-05-29 11:18:09 -07:00
crypto [S390] ap: skip device registration on type probe failure 2011-05-23 10:24:29 +02:00
dca drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() combination 2011-03-22 17:44:12 -07:00
dio m68k: don't export static inline functions 2009-12-06 11:18:28 +01:00
dma dmaengine: shdma: fix a regression: initialise DMA channels for memcpy 2011-06-02 14:40:43 +09:00
edac edac,rcu: use synchronize_rcu() instead of call_rcu()+rcu_barrier() 2011-05-26 17:12:37 -07:00
eisa eisa: fix coding style for eisa bus code 2010-03-06 11:26:32 -08:00
firewire firewire: sbp2: parallelize login, reconnect, logout 2011-05-10 22:53:46 +02:00
firmware Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
gpio arm gpio drivers: make them 'depends on ARM' 2011-05-29 14:06:42 -07:00
gpu vmscan: change shrinker API by passing shrink_control struct 2011-05-25 08:39:26 -07:00
hid Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
hwmon hwmon: (coretemp) Fix section mismatch 2011-05-27 02:24:54 -07:00
hwspinlock hwspinlock: depend on OMAP4 2011-03-18 17:15:11 -07:00
i2c mfd: Use mfd cell platform_data for timberdale cells platform bits 2011-05-26 19:45:05 +02:00
ide block: fix mismerge of the DISK_EVENT_MEDIA_CHANGE removal 2011-06-02 05:29:19 +09:00
idle intel_idle: Rename cpuidle states 2011-02-28 11:04:45 -05:00
ieee802154 net: call dev_alloc_name from register_netdevice 2011-05-05 10:57:45 -07:00
infiniband net: remove interrupt.h inclusion from netdevice.h 2011-06-06 22:55:11 -07:00
input Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
isdn net: remove interrupt.h inclusion from netdevice.h 2011-06-06 22:55:11 -07:00
leds leds: Add ASIC3 LED support 2011-05-26 19:45:46 +02:00
lguest Correct occurrences of 2011-05-06 09:27:55 -07:00
macintosh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
mca mca: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:23 -07:00
md dm kcopyd: return client directly and not through a pointer 2011-05-29 13:03:13 +01:00
media net: remove interrupt.h inclusion from netdevice.h 2011-06-06 22:55:11 -07:00
memstick Fix common misspellings 2011-03-31 11:26:23 -03:00
message Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
mfd mfd: Fix build breakage caused by tps65910 gpio directory move 2011-05-28 08:38:55 +02:00
misc Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
mmc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-05-27 19:51:32 -07:00
mtd Merge git://git.infradead.org/mtd-2.6 2011-05-27 20:06:53 -07:00
net e1000e: access multiple PHY registers on same page at the same time 2011-06-09 20:33:36 -07:00
nfc drivers/nfc/pn544.c: add missing regulator 2011-02-25 15:07:36 -08:00
nubus include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
of Merge branch 'devicetree/arm-next' of git://git.secretlab.ca/git/linux-2.6 into devel-stable 2011-05-25 00:08:17 +01:00
oprofile oprofile: Use linux/mutex.h 2011-05-24 12:45:59 +02:00
parisc Fix common misspellings 2011-03-31 11:26:23 -03:00
parport Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
pci Merge git://git.infradead.org/iommu-2.6 2011-06-02 05:48:50 +09:00
pcmcia pcmcia: Make declaration and uses of struct pcmcia_device_id const 2011-05-06 07:46:15 +02:00
platform Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 2011-05-29 11:44:33 -07:00
pnp Fix common misspellings 2011-03-31 11:26:23 -03:00
power Merge git://git.infradead.org/battery-2.6 2011-05-27 10:12:35 -07:00
pps Fix common misspellings 2011-03-31 11:26:23 -03:00
ps3 Fix common misspellings 2011-03-31 11:26:23 -03:00
ptp ptp: Added a clock driver for the National Semiconductor PHYTER. 2011-05-23 13:10:23 -07:00
rapidio rapidio: fix default routing initialization 2011-05-18 02:55:22 -07:00
regulator regulator: Fix _regulator_get_voltage if get_voltage callback is NULL 2011-05-27 10:49:30 +01:00
rtc drivers/rtc/rtc-mxc.c: remove defines already included in rtc.h 2011-05-26 17:12:33 -07:00
s390 net: remove interrupt.h inclusion from netdevice.h 2011-06-06 22:55:11 -07:00
sbus Fix common misspellings 2011-03-31 11:26:23 -03:00
scsi [SCSI] Fix oops caused by queue refcounting failure 2011-06-02 18:34:43 +09:00
sfi Fix common misspellings 2011-03-31 11:26:23 -03:00
sh Merge branch 'sh/genirq-threading' into sh-latest 2011-05-23 11:36:14 +09:00
sn include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
spi spi/spi_bfin_sport: new driver for a SPI bus via the Blackfin SPORT peripheral 2011-05-27 01:23:54 -06:00
ssb ssb: fix PCI(e) driver regression causing oops on PCI cards 2011-06-03 14:19:49 -04:00
staging Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
target [SCSI] target: Convert TASK_ATTR to scsi_tcq.h definitions 2011-05-24 13:03:56 -04:00
tc include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
telephony pcmcia: Convert pcmcia_device_id declarations to const 2011-05-06 07:46:22 +02:00
thermal ACPI:Fix goto flows in thermal-sys 2011-03-23 01:43:44 -04:00
tty Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
uio uio: clean uioinfo when uninstall uio driver 2011-04-19 16:59:57 -07:00
usb Merge branch 'for-usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci 2011-05-28 12:36:15 -07:00
uwb Fix common misspellings 2011-03-31 11:26:23 -03:00
vhost vhost: support event index 2011-05-30 11:14:15 +09:30
video drivers/video/mb862xx/mb862xxfbdrv.c needs uaccess.h 2011-05-26 17:12:32 -07:00
virtio virtio: add api for delayed callbacks 2011-05-30 11:14:16 +09:30
vlynq vlynq: Convert irq functions 2011-03-28 19:33:04 +02:00
w1 w1: add Maxim/Dallas DS2780 Stand-Alone Fuel Gauge IC support 2011-05-26 17:12:38 -07:00
watchdog mfd: Use mfd cell platform_data for rdc321x cells platform bits 2011-05-26 19:45:06 +02:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem 2011-05-26 10:50:56 -07:00
zorro BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
Kconfig ptp: Added a brand new class driver for ptp clocks. 2011-05-23 13:01:00 -07:00
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2011-05-28 12:35:15 -07:00