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74f350ee08
linux/drivers/net/ethernet
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David Ertman 74f350ee08 e1000e: Feature Enable PHY Ultra Low Power Mode (ULP) 
ULP is a power saving feature that reduces the power consumption of the
PHY when a cable is not connected.

ULP is gated on the following conditions:
1) The hardware must support ULP.  Currently this is only I218
   devices from Intel
2) ULP is initiated by the driver, so, no driver results in no ULP.
3) ULP's implementation utilizes Runtime Power Management to toggle its
   execution.  ULP is enabled/disabled based on the state of Runtime PM.
4) ULP is not active when wake-on-unicast, multicast or broadcast is active
   as these features are mutually-exclusive.

Since the PHY is in an unavailable state while ULP is active, any access
of the PHY registers will fail.  This is resolved by utilizing kernel
calls that cause the device to exit Runtime PM (e.g. pm_runtime_get_sync)
and then, after PHY access is complete,  allow the device to resume
Runtime PM (e.g. pm_runtime_put_sync).

Under certain conditions, toggling the LANPHYPC is necessary to disable
ULP mode.  Break out existing code to toggle LANPHYPC to a new function
to avoid code duplication.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Cc: 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>
2014-03-07 22:52:07 -08:00
..
3com Drivers: net: ethernet: 3com: 3c589_cs fixed coding style issues 2014-02-18 16:59:46 -05:00
8390 net/apne: Remove unused variable ei_local 2014-01-26 22:40:43 -08:00
adaptec
adi net: bfin_mac: do not reset PHY after phy_start() 2013-12-09 20:38:59 -05:00
aeroflex drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
allwinner net: ethernet: sunxi: Add new compatibles 2014-02-06 19:46:54 -08:00
alteon drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
amd pcnet32: add missing check for pci_dma_mapping_error 2014-02-19 14:58:27 -05:00
apple
arc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
atheros alx: add missing stats_lock spinlock init 2014-02-10 17:50:35 -08:00
broadcom Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
brocade Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
cadence net: macb: Fix build warning 2013-12-11 00:19:17 -05:00
calxeda drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
chelsio Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
cirrus drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
cisco enic: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-02-18 15:33:30 -05:00
davicom dm9000: fix a lot of checkpatch issues 2014-01-16 16:22:53 -08:00
dec drivers/net: tulip_remove_one needs to call pci_disable_device() 2014-02-17 00:19:24 -05:00
dlink drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
emulex be2net: do external loopback test only when it is requested 2014-03-06 17:01:10 -05:00
faraday net: ftgmac100: use kfree_skb() where appropriate 2014-01-17 18:54:13 -08:00
freescale Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
fujitsu drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
hp
i825xx drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
ibm Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-01-27 21:11:26 -08:00
icplus drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
intel e1000e: Feature Enable PHY Ultra Low Power Mode (ULP) 2014-03-07 22:52:07 -08:00
marvell Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-02-19 01:24:22 -05:00
mellanox net/mlx4_en: mlx4_en_verify_params() can be static 2014-03-06 16:53:36 -05:00
micrel drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
microchip
moxa drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
myricom myri10ge: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-02-18 15:33:32 -05:00
natsemi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
neterion vxge: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-02-18 15:33:32 -05:00
nuvoton
nvidia forcedeth: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-02-18 15:33:33 -05:00
nxp drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
octeon
oki-semi ethernet: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
packetengines net: packetengines: slight optimization of addr 2013-12-31 16:48:32 -05:00
pasemi drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
qlogic Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
rdc r6040: use ETH_ZLEN instead of MISR for SKB length checking 2014-01-16 16:22:54 -08:00
realtek r8169: initialize rtl8169_stats seqlock 2014-02-24 20:32:23 -05:00
renesas sh_eth: add device tree support 2014-02-18 17:21:34 -05:00
seeq drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
sfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
sgi drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
silan
sis net: sis900: remove unnecessary pci_set_drvdata() 2013-12-09 18:09:28 -05:00
smsc drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
stmicro net: stmmac: Check return value of alloc_dma_desc_resources() 2014-02-24 18:58:10 -05:00
sun niu: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-02-18 15:33:34 -05:00
tehuti net: Spelling s/transmition/transmission/ 2014-01-14 17:11:26 -08:00
ti Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-03-05 20:32:02 -05:00
tile netdevice: add queue selection fallback handler for ndo_select_queue 2014-02-17 00:36:34 -05:00
toshiba drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
tundra drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
via net,via-rhine: Fix tx_timeout handling 2014-01-15 15:21:08 -08:00
wiznet net: w5100: Use devm_ioremap_resource() 2014-02-28 16:57:24 -05:00
xilinx net: axienet: Fix compilation warnings 2014-02-13 18:07:40 -05:00
xircom ethernet: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
xscale ixp4xx_eth: Implement the SIOCGHWTSTAMP ioctl 2013-11-21 17:17:48 +00:00
dnet.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
dnet.h
ethoc.c net: ethoc: set up MII management bus clock 2014-02-04 20:19:51 -08:00
fealnx.c
jme.c
jme.h
Kconfig
korina.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
lantiq_etop.c netdevice: add queue selection fallback handler for ndo_select_queue 2014-02-17 00:36:34 -05:00
Makefile
netx-eth.c ethernet: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
s6gmac.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00