Commit Graph

374 Commits

Author SHA1 Message Date
Tom Herbert e25909bcdf net: e1000e calls skb_set_hash
Drivers should call skb_set_hash to set the hash and its type
in an skbuff.

Signed-off-by: Tom Herbert <therbert@google.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-12 18:58:26 -07:00
David Ertman 96dee024ca e1000e: Fix SHRA register access for 82579
Previous commit c3a0dce35a fixed an overrun for the RAR on i218 devices.
This commit also attempted to homogenize the RAR/SHRA access for all parts
accessed by the e1000e driver.  This change introduced an error for
assigning MAC addresses to guest OS's for 82579 devices.

Only RAR[0] is accessible to the driver for 82579 parts, and additional
addresses must be placed into the SHRA[L|H] registers.  The rar_entry_count
was changed in the previous commit to an inaccurate value that accounted
for all RAR and SHRA registers, not just the ones usable by the driver.

This patch fixes the count to the correct value and adjusts the
e1000_rar_set_pch2lan() function to user the correct index.

Cc: John Greene <jogreene@redhat.com>
Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-07 23:56:16 -08:00
David Ertman ad40064e88 e1000e: Fix ethtool offline tests for 82579 parts
Changes to the rar_entry_count value require a change to the indexing
used to access the SHRA[H|L] registers when testing them with
'ethtool -t <iface> offline'

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-07 23:48:58 -08:00
David Ertman 5bb7317608 e1000e: Fix not generating an error on invalid load parameter
Valid values for InterruptThrottleRate are 10-100000, or one of
0, 1, 3, 4.  '2' is not valid.  This is a legacy from the branching
from the e1000 driver code that e1000e was based from.

Prior to this patch, if the e1000e driver  was loaded with a forced
invalid InterruptThrottleRate of '2', then no throttle rate would be
set and no error message generated.

Now, a message will be generated that an invalid value was used and the
value for InterruptThrottleRate will be set to the default value.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-07 23:06:41 -08:00
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
David Ertman 63eb48f151 e1000e Refactor of Runtime Power Management
Fix issues with:
RuntimePM causing the device to repeatedly flip between suspend and resume
with the interface administratively downed.
Having RuntimePM enabled interfering with the functionality of Energy
Efficient Ethernet.

Added checks to disallow functions that should not be executed if the
device is currently runtime suspended

Make runtime_idle callback to use same deterministic behavior as the igb
driver.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-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>
2014-03-07 22:30:59 -08:00
David Ertman 2800209994 e1000e: Refactor PM flows
Refactor the system power management flows to prevent the suspend path from
being executed twice when hibernating since both the freeze and
poweroff callbacks were set to e1000_suspend() via SET_SYSTEM_SLEEP_PM_OPS.
There are HW workarounds that are performed during this flow and calling
them twice was causing erroneous behavior.

Re-arrange the code to take advantage of common code paths and explicitly
set the individual dev_pm_ops callbacks for suspend, resume, freeze,
thaw, poweroff and restore.

Add a boolean parameter (reset) to the e1000e_down function to allow
for cases when the HW should not be reset when downed during a PM event.

Now that all suspend/shutdown paths result in a call to __e1000_shutdown()
that checks Wake on Lan status, removing redundant check for WoL in
e1000_power_down_phy().

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-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>
2014-03-07 22:19:53 -08:00
David Ertman 3b70d4f848 e1000e: Add missing branding strings in ich8lan.c
Branding strings from recently released and soon to be released
hardware configurations that are supported by e1000e.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-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>
2014-03-07 22:02:26 -08:00
David Ertman e78b80b107 e1000e: Cleanup - Update GPL header and Copyright
This patch is to update the GPL header by removing the portion that
refers to the Free Software Foundation address.

Change the copyright date for 2014.

Reformat the header comments to conform to kernel networking coding norms

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-07 21:55:27 -08:00
David Ertman a03206edff e1000e: Fix 82579 sets LPI too early.
Enabling EEE LPI sooner than one second after link up on 82579 causes link
issues with some switches.

Remove EEE enablement for 82579 parts from the link initialization flow to
avoid initializing too early.  EEE initialization for 82579 will be done
in e1000e_update_phy_task.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce W 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 21:48:13 -08:00
David Ertman f7235ef669 e1000e: Resolve issues with Management Engine (ME) briefly blocking PHY resets
On a ME enabled system with the cable out, the driver init flow would
generate an erroneous message indicating that resets were being blocked
by an active ME session.  Cause was ME clearing the semaphore bit to
block further PHY resets for up to 50 msec during power-on/cycle.  After
this interval, ME would re-set the bit and allow PHY resets.

To resolve this, change the flow of e1000e_phy_hw_reset_generic() to
utilize a delay and retry method.  Poll the FWSM register to minimize
any extra time added to the flow.  If the delay times out at 100ms
(checked in 10msec increments), then return the value E1000_BLK_PHY_RESET,
as this is the accurate state of the PHY.  Attempting to alter just the
call to e1000e_phy_hw_reset_generic() in e1000_init_phy_workarounds_pchlan()
just caused the problem to move further down the flow.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce W. 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 21:24:55 -08:00
David Ertman b485dbaecd e1000e: Cleanup unecessary references
Cleaning up some pointer references that are no longer necessary

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-07 21:00:58 -08:00
Todd Fujinaka 6c2ed39c1c e1000e: PTP lock in e1000e_phc_adjustfreq
Add lock in e1000e_phc_adjfreq to prevent concurrent changes to TIMINCA
and SYSTIMH/L.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-07 20:53:56 -08:00
Alexander Gordeev 0cc7c959fa e1000e: Use pci_enable_msix_range() instead of pci_enable_msix()
As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range() and pci_enable_msix_range()
interfaces.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Bruce Allan <bruce.w.allan@intel.com>
Cc: e1000-devel@lists.sourceforge.net
Cc: netdev@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-18 15:33:31 -05:00
David S. Miller 4180442058 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
	net/ipv4/tcp_metrics.c

Overlapping changes between the "don't create two tcp metrics objects
with the same key" race fix in net and the addition of the destination
address in the lookup key in net-next.

Minor overlapping changes in bnx2x driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-18 00:55:41 -08:00
Mika Westerberg 38a529b5d4 e1000e: Fix compilation warning when !CONFIG_PM_SLEEP
Commit 7509963c70 (e1000e: Fix a compile flag mis-match for
suspend/resume) moved suspend and resume hooks to be available when
CONFIG_PM is set. However, it can be set even if CONFIG_PM_SLEEP is not set
causing following warnings to be emitted:

drivers/net/ethernet/intel/e1000e/netdev.c:6178:12: warning:
  	‘e1000_suspend’ defined but not used [-Wunused-function]

drivers/net/ethernet/intel/e1000e/netdev.c:6185:12: warning:
	‘e1000_resume’ defined but not used [-Wunused-function]

To fix this make the hooks to be available only when CONFIG_PM_SLEEP is set
and remove CONFIG_PM wrapping from driver ops because this is already
handled by SET_SYSTEM_SLEEP_PM_OPS() and SET_RUNTIME_PM_OPS().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Dave Ertman <davidx.m.ertman@intel.com>
Cc: Aaron Brown <aaron.f.brown@intel.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-16 15:36:26 -08:00
David S. Miller 56a4342dfe Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c
	net/ipv6/ip6_tunnel.c
	net/ipv6/ip6_vti.c

ipv6 tunnel statistic bug fixes conflicting with consolidation into
generic sw per-cpu net stats.

qlogic conflict between queue counting bug fix and the addition
of multiple MAC address support.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-06 17:37:45 -05:00
David Ertman 7509963c70 e1000e: Fix a compile flag mis-match for suspend/resume
This patch addresses a mis-match between the declaration and usage of
the e1000_suspend and e1000_resume functions.  Previously, these
functions were declared in a CONFIG_PM_SLEEP wrapper, and then utilized
within a CONFIG_PM wrapper.  Both the declaration and usage will now be
contained within CONFIG_PM wrappers.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-12-17 22:45:03 -08:00
David Ertman 918a4308ba e1000e: fix compiler warning (maybe-unitialized variable)
This patch is to fix a compiler warning of maybe-uininitialized-variable
that is generated from gcc when the -O3 flag is used.  In the function
e1000_reset_hw_80003es2lan(), the variable krmn_reg_data is first given
a value by being passed to a register read function as a
pass-by-reference parameter.  But, the return value of that read
function was never checked to see if the read failed and the variable
not given an initial value.  The compiler was smart enough to spot
this.  This patch is to check the return value for that read function
and return it, if an error occurs, without trying to utilize the value
in kmrn_reg_data.

Signed-off-by: David Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-12-17 22:20:49 -08:00
David Ertman 9e6c3b6339 e1000e: fix compiler warnings
This patch is to fix a compiler warning of __bad_udelay due to a value
of >999 being passed as a parameter to udelay() in the function
e1000e_phy_has_link_generic().  This affects the gcc compiler when
it is given a flag of -O3 and the icc compiler.

This patch is also making the change from mdelay() to msleep() in the
same function, since it was determined though code inspection that this
function is never called in atomic context.

Signed-off-by: David Ertman <davidx.m.ertman@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-12-17 21:52:39 -08:00
David S. Miller 426e1fa31e Merge branch 'siocghwtstamp' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-next
Ben Hutchings says:

====================
SIOCGHWTSTAMP ioctl

1. Add the SIOCGHWTSTAMP ioctl and update the timestamping
documentation.
2. Implement SIOCGHWTSTAMP in most drivers that support SIOCSHWTSTAMP.
3. Add a test program to exercise SIOC{G,S}HWTSTAMP.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-05 19:45:14 -05:00
Ben Hutchings 4e8cff6480 e1000e: Implement the SIOCGHWTSTAMP ioctl
Compile-tested only.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-11-21 17:17:39 +00:00
Linus Torvalds 1ee2dcc224 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Mostly these are fixes for fallout due to merge window changes, as
  well as cures for problems that have been with us for a much longer
  period of time"

 1) Johannes Berg noticed two major deficiencies in our genetlink
    registration.  Some genetlink protocols we passing in constant
    counts for their ops array rather than something like
    ARRAY_SIZE(ops) or similar.  Also, some genetlink protocols were
    using fixed IDs for their multicast groups.

    We have to retain these fixed IDs to keep existing userland tools
    working, but reserve them so that other multicast groups used by
    other protocols can not possibly conflict.

    In dealing with these two problems, we actually now use less state
    management for genetlink operations and multicast groups.

 2) When configuring interface hardware timestamping, fix several
    drivers that simply do not validate that the hwtstamp_config value
    is one the driver actually supports.  From Ben Hutchings.

 3) Invalid memory references in mwifiex driver, from Amitkumar Karwar.

 4) In dev_forward_skb(), set the skb->protocol in the right order
    relative to skb_scrub_packet().  From Alexei Starovoitov.

 5) Bridge erroneously fails to use the proper wrapper functions to make
    calls to netdev_ops->ndo_vlan_rx_{add,kill}_vid.  Fix from Toshiaki
    Makita.

 6) When detaching a bridge port, make sure to flush all VLAN IDs to
    prevent them from leaking, also from Toshiaki Makita.

 7) Put in a compromise for TCP Small Queues so that deep queued devices
    that delay TX reclaim non-trivially don't have such a performance
    decrease.  One particularly problematic area is 802.11 AMPDU in
    wireless.  From Eric Dumazet.

 8) Fix crashes in tcp_fastopen_cache_get(), we can see NULL socket dsts
    here.  Fix from Eric Dumzaet, reported by Dave Jones.

 9) Fix use after free in ipv6 SIT driver, from Willem de Bruijn.

10) When computing mergeable buffer sizes, virtio-net fails to take the
    virtio-net header into account.  From Michael Dalton.

11) Fix seqlock deadlock in ip4_datagram_connect() wrt.  statistic
    bumping, this one has been with us for a while.  From Eric Dumazet.

12) Fix NULL deref in the new TIPC fragmentation handling, from Erik
    Hugne.

13) 6lowpan bit used for traffic classification was wrong, from Jukka
    Rissanen.

14) macvlan has the same issue as normal vlans did wrt.  propagating LRO
    disabling down to the real device, fix it the same way.  From Michal
    Kubecek.

15) CPSW driver needs to soft reset all slaves during suspend, from
    Daniel Mack.

16) Fix small frame pacing in FQ packet scheduler, from Eric Dumazet.

17) The xen-netfront RX buffer refill timer isn't properly scheduled on
    partial RX allocation success, from Ma JieYue.

18) When ipv6 ping protocol support was added, the AF_INET6 protocol
    initialization cleanup path on failure was borked a little.  Fix
    from Vlad Yasevich.

19) If a socket disconnects during a read/recvmsg/recvfrom/etc that
    blocks we can do the wrong thing with the msg_name we write back to
    userspace.  From Hannes Frederic Sowa.  There is another fix in the
    works from Hannes which will prevent future problems of this nature.

20) Fix route leak in VTI tunnel transmit, from Fan Du.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits)
  genetlink: make multicast groups const, prevent abuse
  genetlink: pass family to functions using groups
  genetlink: add and use genl_set_err()
  genetlink: remove family pointer from genl_multicast_group
  genetlink: remove genl_unregister_mc_group()
  hsr: don't call genl_unregister_mc_group()
  quota/genetlink: use proper genetlink multicast APIs
  drop_monitor/genetlink: use proper genetlink multicast APIs
  genetlink: only pass array to genl_register_family_with_ops()
  tcp: don't update snd_nxt, when a socket is switched from repair mode
  atm: idt77252: fix dev refcnt leak
  xfrm: Release dst if this dst is improper for vti tunnel
  netlink: fix documentation typo in netlink_set_err()
  be2net: Delete secondary unicast MAC addresses during be_close
  be2net: Fix unconditional enabling of Rx interface options
  net, virtio_net: replace the magic value
  ping: prevent NULL pointer dereference on write to msg_name
  bnx2x: Prevent "timeout waiting for state X"
  bnx2x: prevent CFC attention
  bnx2x: Prevent panic during DMAE timeout
  ...
2013-11-19 15:50:47 -08:00
Ben Hutchings 62d7e3a2d0 e1000e: Validate hwtstamp_config completely before applying it
e1000e_hwtstamp_ioctl() should validate all fields of hwtstamp_config
before making any changes.  Currently it copies the configuration to
the e1000_adapter structure before validating it at all.

Change e1000e_config_hwtstamp() to take a pointer to the
hwstamp_config and to copy the config after validating it.

Compile-tested only.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-14 16:22:09 -05:00
Linus Torvalds 8ceafbfa91 Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm
Pull DMA mask updates from Russell King:
 "This series cleans up the handling of DMA masks in a lot of drivers,
  fixing some bugs as we go.

  Some of the more serious errors include:
   - drivers which only set their coherent DMA mask if the attempt to
     set the streaming mask fails.
   - drivers which test for a NULL dma mask pointer, and then set the
     dma mask pointer to a location in their module .data section -
     which will cause problems if the module is reloaded.

  To counter these, I have introduced two helper functions:
   - dma_set_mask_and_coherent() takes care of setting both the
     streaming and coherent masks at the same time, with the correct
     error handling as specified by the API.
   - dma_coerce_mask_and_coherent() which resolves the problem of
     drivers forcefully setting DMA masks.  This is more a marker for
     future work to further clean these locations up - the code which
     creates the devices really should be initialising these, but to fix
     that in one go along with this change could potentially be very
     disruptive.

  The last thing this series does is prise away some of Linux's addition
  to "DMA addresses are physical addresses and RAM always starts at
  zero".  We have ARM LPAE systems where all system memory is above 4GB
  physical, hence having DMA masks interpreted by (eg) the block layers
  as describing physical addresses in the range 0..DMAMASK fails on
  these platforms.  Santosh Shilimkar addresses this in this series; the
  patches were copied to the appropriate people multiple times but were
  ignored.

  Fixing this also gets rid of some ARM weirdness in the setup of the
  max*pfn variables, and brings ARM into line with every other Linux
  architecture as far as those go"

* 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm: (52 commits)
  ARM: 7805/1: mm: change max*pfn to include the physical offset of memory
  ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations
  ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations
  ARM: 7795/1: mm: dma-mapping: Add dma_max_pfn(dev) helper function
  ARM: 7794/1: block: Rename parameter dma_mask to max_addr for blk_queue_bounce_limit()
  ARM: DMA-API: better handing of DMA masks for coherent allocations
  ARM: 7857/1: dma: imx-sdma: setup dma mask
  DMA-API: firmware/google/gsmi.c: avoid direct access to DMA masks
  DMA-API: dcdbas: update DMA mask handing
  DMA-API: dma: edma.c: no need to explicitly initialize DMA masks
  DMA-API: usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
  DMA-API: crypto: remove last references to 'static struct device *dev'
  DMA-API: crypto: fix ixp4xx crypto platform device support
  DMA-API: others: use dma_set_coherent_mask()
  DMA-API: staging: use dma_set_coherent_mask()
  DMA-API: usb: use new dma_coerce_mask_and_coherent()
  DMA-API: usb: use dma_set_coherent_mask()
  DMA-API: parport: parport_pc.c: use dma_coerce_mask_and_coherent()
  DMA-API: net: octeon: use dma_coerce_mask_and_coherent()
  DMA-API: net: nxp/lpc_eth: use dma_coerce_mask_and_coherent()
  ...
2013-11-14 07:55:21 +09:00
Joe Perches 5ccc921af4 intel: Remove extern from function prototypes
There are a mix of function prototypes with and without extern
in the kernel sources.  Standardize on not using extern for
function prototypes.

Function prototypes don't need to be written with extern.
extern is assumed by the compiler.  Its use is as unnecessary as
using auto to declare automatic/local variables in a block.

Signed-off-by: Joe Perches <joe@perches.com>
2013-09-24 12:51:37 -07:00
Russell King 718a39eb58 DMA-API: net: intel/e1000e: fix 32-bit DMA mask handling
The fallback to 32-bit DMA mask is rather odd:
	err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
	if (!err) {
		err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
		if (!err)
			pci_using_dac = 1;
	} else {
		err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
		if (err) {
			err = dma_set_coherent_mask(&pdev->dev,
						    DMA_BIT_MASK(32));
			if (err) {
				dev_err(&pdev->dev,
					"No usable DMA configuration, aborting\n");
				goto err_dma;
			}
		}
	}
This means we only set the coherent DMA mask in the fallback path if
the DMA mask set failed, which is silly.  This fixes it to set the
coherent DMA mask only if dma_set_mask() succeeded, and to error out
if either fails.

Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-21 21:00:39 +01:00
David Ertman c3a0dce35a e1000e: fix overrun of PHY RAR array
When copying the MAC RAR registers to PHY there is an error in the
calculation of the rar_entry_count, which causes a write of unknown/
undefined register space in the MAC to unknown/undefined register space in
the PHY.

This patch fixes the overrun with writing to the PHY RAR and also fixes the
ethtool offline register tests so that the correctly addressed registers
have the appropriate bitmasks for R/W and RO bits for affected parts.

Shawn Rader gets credit for finding and fixing the register overrun.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
CC: Shawn Rader <shawn.t.rader@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-09-13 10:19:56 -07:00
David Ertman 138953bb6a e1000e: cleanup boolean comparison to true
Removing a comparison to the boolean value true where simply interrogating
the lvalue will produce the same result.

Signed-off-by: David Ertman <davidx.m.ertman@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-09-13 10:06:55 -07:00
Steven La 35fdb94b45 e1000e: balance semaphore put/get for 82573
Steven (cc-ed) noticed an imbalance in semaphore put/get for
82573-based NICs. Don't we need something like the following
(untested) patch?

Signed-off-by: Steven La <sla@riverbed.com>
Acked-by: Arthur Kepner <akepner@riverbed.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27 16:05:26 -04:00
Bruce Allan 22f8abaa8f e1000e: resolve checkpatch JIFFIES_COMPARISON warning
WARNING:JIFFIES_COMPARISON: Comparing jiffies is almost always wrong;
prefer time_after, time_before and friends

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-08-22 02:33:24 -07:00
Li Zhang e8c254c5fe e1000e: Avoid kernel crash during shutdown
While doing shutdown on the PCI device, the corresponding callback
function e1000e_shutdown() is trying to clear those correctable
errors on the upstream P2P bridge. Unfortunately, we don't have
the upstream P2P bridge under some cases (e.g. PCI-passthrou for
KVM on Power). That leads to kernel crash eventually.

The patch adds one more check on that to avoid kernel crash.

Signed-off-by: Li Zhang <zhlcindy@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-08-22 02:33:20 -07:00
Carolyn Wyborny 13129d9b61 e1000e: Add code to check for failure of pci_disable_link_state call
This patch attempts to work around a problem found with some systems where
the call to pci_diable_link_state_locked() fails.  As a result, ASPM is not,
in fact, disabled.  Changing disable ASPM code to check if state actually
is disabled after the call and, if not, try another way to disable it.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Acked-by: Bruce W. Allan <bruce.w.allan@intel.com>
Tested-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-08-22 02:33:15 -07:00
Bruce Allan 0cf04597b4 e1000e: cleanup whitespace in recent commit
Commit (c96ddb0b e1000e: Use marco instead of digit for defining
e1000_rx_desc_packet_split) moved a define from one file to another but
missed using proper indentation/whitespace.

CC: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-08-22 02:33:05 -07:00
Bruce Allan 16b095a413 e1000e: fix I217/I218 PHY initialization flow
The initialization of the PHY on I217/I218, while similar to 82579, must
also check to see if the MAC and PHY are in the same mode (PCIe vs. SMBus)
otherwise the PHY will be inaccessible by the MAC.

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>
2013-07-28 04:02:05 -07:00
Bruce Allan 97390ab86b e1000e: do not resume device from RPM suspend to read PHY status registers
When the device is runtime suspended (e.g. when there is no link), do not
wake it from D3 to read the PHY status; just set the values to typical
power-on defaults as is done when runtime PM is not enabled and there is no
link.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 03:52:44 -07:00
Bruce Allan 91a3d82f38 e1000e: enable support for new device IDs
The device IDs 0x15a0 and 0x15a1 are new SKUs that contain the same MAC as
I217 and same PHY as I218.

The device IDs 0x15a2 and 0x15a3 are the same as existing I218 SKUs.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 03:44:39 -07:00
Bruce Allan 3ef672ab18 e1000e: ethtool unnecessarily takes device out of RPM suspend
A previous patch (commit e60b22c5b7 e1000e: fix accessing to suspended
device) added .begin and .complete ethtool driver callbacks so that the
device was resumed from Runtime Power Management (RPM) suspend state for
all ethtool operations.  This is overkill for operations which do not need
to access any registers in the device.  This patch makes it so that the
device is taken out of RPM suspend only for those ethtool operations that
must access device registers.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 03:31:39 -07:00
Bruce Allan e0236ad9cd e1000e: Tx hang on I218 when linked at 100Half and slow response at 10Mbps
Tx hang is an unintended consequence of another workaround that is in the
EEPROM for an issue with the firmware at 10Mbps when K1 (a power mode of
the MAC-PHY interconnect) is enabled.  The issue is resolved by setting
appropriate Tx re-transmission timeouts in the PHY and associated K1 entry
times in the MAC to allow enough transmissions to occur without triggering
a Tx hang.  A similar change is needed when linked at 10Mbps to improve
latency.

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>
2013-07-28 03:24:14 -07:00
Bruce Allan ce345e082e e1000e: low throughput using 4K jumbos on I218
Alter the packet buffer allocation accordingly.

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>
2013-07-28 03:13:02 -07:00
Bruce Allan da1e2046e5 e1000e: iAMT connections drop on driver unload when jumbo frames enabled
The jumbo frame configuration in the MAC/PHY should be reverted on 82579
and newer parts when the interface is brought down (not just when the MTU
is changed back to standard frame size) otherwise iAMT connections (e.g.
SoL, IDE-R) will be dropped and cannot be re-acquired until the MTU is
changed again.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 03:05:45 -07:00
Bruce Allan b43e867a02 e1000e: disable ASPM L1 on 82583
The 82583 can disappear off the PCIe bus.  This device is a modified 82574
which had the same problem which was fixed by disabling ASPM L1; disabling
it on 82583 fixes the issue on this device.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 02:58:14 -07:00
Wei Yang c96ddb0ba2 e1000e: Use marco instead of digit for defining e1000_rx_desc_packet_split
In structure e1000_rx_desc_packet_split, the size of wb.upper.length is
defined by a digit. This may introduce some problem when the length is
changed.

This patch use the macro PS_PAGE_BUFFERS for the definition. And move the
definition to hw.h.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 02:50:53 -07:00
Wei Yang 2592881990 e1000e: Remove duplicate assignment of default rx/tx ring size
tx_ring/rx_ring size is assigned in function e1000_alloc_queues(), which is
called by e1000_sw_init() in the early stage of e1000_probe().

This patch just remove the duplicate assignment of this default ring size
value.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Reviewed-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Reviewed-by: Da Yu Qiu <qiudayu@cn.ibm.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 02:42:59 -07:00
Dean Nelson 24b41c972c e1000e: restore call to pci_clear_master()
In attempting to resolve a minor merge conflict, commit e5f2ef7ab4
(Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net) accidentally
dropped a call to pci_clear_master() that was intended to remain in place.

Commit 4e0855dff0 (e1000e: fix pci-device enable-counter balance)
replaced a call to pci_disable_device() by one to pci_clear_master(). And then
commit 66148babe7 (e1000e: fix runtime power management transitions)
deleted a number of lines starting two lines following that call.

This patch restores the call to pci_clear_master() in __e1000_shutdown().

v2: added summary lines (enclosed in parens) following commit IDs

Signed-off-by: Dean Nelson <dnelson@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-07-28 02:34:59 -07:00
Akeem G. Abodunrin 6c1d8b96d0 e1000e: Release mutex lock only if it has been initially acquired
This patch fixes the issue of unlocking swflag_mutex for 82574 and 82583
devices regardless of if the hw semaphore has been successfully acquired via
e1000_get_hw_semaphore_82574(). With this patch, unlocking mutex now depends
on if the hw semaphore was successfully acquired before. And 82574/82583
devices are reset regardless of whether e1000_get_hw_semaphore_82574()
returns success or failure.

Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:19:03 -07:00
Bruce Allan 603cdca980 e1000e: prevent warning from -Wunused-parameter
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:13:07 -07:00
Bruce Allan e80bd1d181 e1000e: cleanup whitespace
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-05-21 02:07:01 -07:00
Bruce Allan 2a437cd36e e1000e: fix scheduling while atomic bug
A scheduling while atomic bug was introduced recently (by commit
ce43a2168c59: "e1000e: cleanup USLEEP_RANGE checkpatch checks").

Revert the particular instance of usleep_range() which causes the bug.

Reported-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-07 07:51:37 -07:00
Bruce Allan a3b87a4c69 e1000e: panic caused by Rx traffic arriving while interface going down
An "unable to handle kernel paging request" panic can occur when receiving
traffic while the interface is going down.  Wait for NAPI to be done with
current context after disabling interrupts and then disable NAPI.

See https://bugzilla.vyatta.com/show_bug.cgi?id=8837.

Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-04-25 18:39:56 -07:00
Richard Cochran 73e3dd6b45 e1000e: fix numeric overflow in phc settime method
The PTP Hardware Clock settime function in the e1000e driver
computes nanoseconds from a struct timespec. The code converts the
seconds field .tv_sec by multiplying it with NSEC_PER_SEC. However,
both operands are of type long, resulting in an unintended overflow.
The patch fixes the issue by using the helper function from time.h.

CC: stable <stable@vger.kernel.org>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-04-25 18:30:02 -07:00
Patrick McHardy 86a9bad3ab net: vlan: add protocol argument to packet tagging functions
Add a protocol argument to the VLAN packet tagging functions. In case of HW
tagging, we need that protocol available in the ndo_start_xmit functions,
so it is stored in a new field in the skb. The new field fits into a hole
(on 64 bit) and doesn't increase the sks's size.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19 14:46:06 -04:00
Patrick McHardy 80d5c3689b net: vlan: prepare for 802.1ad VLAN filtering offload
Change the rx_{add,kill}_vid callbacks to take a protocol argument in
preparation of 802.1ad support. The protocol argument used so far is
always htons(ETH_P_8021Q).

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19 14:45:27 -04:00
Patrick McHardy f646968f8f net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_*
Rename the hardware VLAN acceleration features to include "CTAG" to indicate
that they only support CTAGs. Follow up patches will introduce 802.1ad
server provider tagging (STAGs) and require the distinction for hardware not
supporting acclerating both.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19 14:45:26 -04:00
David S. Miller a210576cf8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	net/mac80211/sta_info.c
	net/wireless/core.h

Two minor conflicts in wireless.  Overlapping additions of extern
declarations in net/wireless/core.h and a bug fix overlapping with
the addition of a boolean parameter to __ieee80211_key_free().

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-01 13:36:50 -04:00
Bruce Allan 274a85e095 e1000e: fix scheduling while atomic bugs
The previous commit ce43a2168c (e1000e:
cleanup USLEEP_RANGE checkpatch checks) converted a number of delays and
sleeps as recommended in ./Documentation/timers/timers-howto.txt.
Unfortunately, a few of the udelay() to usleep_range() conversions are in
code paths that are in an atomic context in which usleep_range() should
not be used.  Revert those specific changes.

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>
2013-03-28 00:56:48 -07:00
Bruce Allan 8defe71382 e1000e: increase driver version number
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-28 00:43:41 -07:00
Bruce Allan b48c75111a e1000e: cleanup unused defines
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-28 00:37:08 -07:00
Bruce Allan cf8fb73c23 e1000e: add support for LTR on I217/I218
Set the Latency Tolerance Reporting (LTR) values for the "PCIe-like"
GbE MAC in the Lynx Point PCH based on Rx buffer size and link speed
when link is up (which must not exceed the maximum latency supported
by the platform), otherwise specify there is no LTR requirement.
Unlike true-PCIe devices which set the LTR maximum snoop/no-snoop
latencies in the LTR Extended Capability Structure in the PCIe Extended
Capability register set, on this device LTR is set by writing the
equivalent snoop/no-snoop latencies in the LTRV register in the MAC and
set the SEND bit to send an Intel On-chip System Fabric sideband (IOSF-SB)
message to the PMC.

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>
2013-03-28 00:25:11 -07:00
Bruce Allan 1fc06b0aaa e1000e: enable EEE by default
Now that IEEE802.3az-2010 Energy Efficient Ethernet has been approved as
standard (September 2010) and the driver can enable and disable it via
ethtool, enable the feature by default on parts which support it.

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>
2013-03-28 00:12:35 -07:00
Bruce Allan d495bcb84d e1000e: EEE capability advertisement not set/disabled as required
Devices supported by the driver which support EEE (currently 82579, I217
and I218) are advertising EEE capabilities during auto-negotiation even
when EEE has been disabled.  In addition to not acting as expected, this
also caused the EEE status reported by 'ethtool --show-eee' to be wrong
when two of these devices are connected back-to-back and EEE is disabled
on one.  In addition to fixing this issue, the ability for the user to
specify which speeds (100 or 1000 full-duplex) to advertise EEE support
has been added.

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>
2013-03-28 00:01:52 -07:00
Bruce Allan ea8179a728 e1000e: long access timeouts when I217/I218 MAC and PHY are out of sync
When the MAC and PHY are in two different modes (different power levels
and interconnect speeds), it could take a long time before a PHY register
access timed out using the existing MAC-PHY interconnect configuration
coded into the driver for ICH- and PCH-based LOMs.  Introduce an I217/I218-
specific .setup_physical_interface operation which does not override the
interconnect configuration in the NVM.

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>
2013-03-27 23:55:22 -07:00
Bruce Allan 86a80eab8c e1000e: fix LED blink logic for designs with LEDs driven by cathode
When the LEDs are driven by cathode, the bit logic is reversed.  Use the
LED Invert bit to invert the logic.  Cleanup use of a magic number and
change the for loop increment to reduce the number of shifts.

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>
2013-03-27 23:32:06 -07:00
Bruce Allan 772d05c51c e1000e: slow performance between two 82579 connected via 10Mbit hub
Two 82579 LOMs connected via a 10Mb hub experience extraordinarily low
performance.  This is because 82579 is excessively aggressive on transmit
at 10Mb half-duplex and will not provide sufficient time for the link
partner to transmit.  When the link partner is also 82579, the result is a
lot of collisions (and corresponding re-transmits) that cause the poor
performance. To work-around this issue, significantly increase the IPG in
the MAC to allow enough gap for the link partner to transmit and reduce the
Rx latency in the analog PHY to 0 to reduce the number of collisions.

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>
2013-03-27 23:25:36 -07:00
Bruce Allan bb034512da e1000e: additional error handling on PHY register accesses
PHY reads/writes via the MDIC register could potentially return results
from a previous PHY register access.  If that happens, the offset in the
returned results will be that of the previous access and if that is
different from the expected offset, log a debug message and error out.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-27 23:13:47 -07:00
Christoph Paasch 37287fae7e e1000e: Add missing dma_mapping_error-call in e1000_alloc_jumbo_rx_buffers
After dma_map_page, dma_mapping_error must be called. It seems safe to
not free the skb/page allocated in this function, as the skb/page can be
reused later.

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-27 03:26:27 -07:00
David S. Miller e5f2ef7ab4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/intel/e1000e/netdev.c

Minor conflict in e1000e, a line that got fixed in 'net'
has been removed in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-12 05:52:22 -04:00
Bruce Allan 3ffcf2cb1e e1000e: cleanup - move defines to appropriate header file
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:53:29 -08:00
Bruce Allan bbf441271b e1000e: cleanup format of struct e1000_opt_list struct
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:35:16 -08:00
Bruce Allan ce43a2168c e1000e: cleanup USLEEP_RANGE checkpatch checks
Resolve strict checkpatch USLEEP_RANGE checks by converting delays and
sleeps as described in ./Documentation/timers/timers-howto.txt.  Three
other violations of the text have also been fixed.

CHECK:USLEEP_RANGE: usleep_range is preferred over udelay; see
Documentation/timers/timers-howto.txt

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:28:59 -08:00
Bruce Allan e5fe2541b5 e1000e: cleanup unnecessary line breaks
Cuddle broken lines where appropriate.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:21:52 -08:00
Bruce Allan 04e115cfc5 e1000e: cleanup formatting of static structs
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:15:22 -08:00
Bruce Allan 33550cecf5 e1000e: cleanup unusually placed comments
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:07:56 -08:00
Bruce Allan fc830b785b e1000e: cleanup (add/remove) blank lines where appropriate
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 01:01:55 -08:00
Bruce Allan 53aa82da09 e1000e: cleanup SPACING checkpatch checks
CHECK:SPACING: No space is necessary after a cast
CHECK:SPACING: space prohibited before semicolon

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 00:55:15 -08:00
Bruce Allan 17e813ec8c e1000e: cleanup PARENTHESIS_ALIGNMENT checkpatch checks
CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 00:49:14 -08:00
Bruce Allan 66501f567d e1000e: cleanup LEADING_SPACE checkpatch warnings
WARNING:LEADING_SPACE: please, no spaces at the start of a line

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 00:43:04 -08:00
Bruce Allan c29c3ba55f e1000e: cleanup LONG_LINE checkpatch warnings
WARNING:LONG_LINE: line over 80 characters

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 00:36:32 -08:00
Bruce Allan 362e20caee e1000e: cleanup SPACING checkpatch errors and warnings
ERROR:SPACING: spaces prohibited around that ':' (ctx:WxV)
ERROR:SPACING: need consistent spacing around '-' (ctx:WxV)
ERROR:SPACING: space required after that ',' (ctx:VxV)
ERROR:SPACING: spaces required around that '=' (ctx:VxV)
WARNING:SPACING: missing space after enum definition

and some similar spacing issues not reported by checkpatch.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 00:23:56 -08:00
Bruce Allan f0ff439872 e1000e: cleanup CODE_INDENT checkpatch errors
ERROR:CODE_INDENT: code indent should use tabs where possible

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-08 00:16:40 -08:00
Konstantin Khlebnikov e60b22c5b7 e1000e: fix accessing to suspended device
This patch fixes some annoying messages like 'Error reading PHY register' and
'Hardware Erorr' and saves several seconds on reboot.

Cc: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Borislav Petkov <bp@suse.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-07 02:55:30 -08:00
Konstantin Khlebnikov 66148babe7 e1000e: fix runtime power management transitions
This patch removes redundant actions from driver and fixes its interaction
with actions in pci-bus runtime power management code.

It removes pci_save_state() from __e1000_shutdown() for normal adapters,
PCI bus callbacks pci_pm_*() will do all this for us. Now __e1000_shutdown()
switches to D3-state only quad-port adapters, because they needs quirk for
clearing false-positive error from downsteam pci-e port.

pci_save_state() now called after clearing bus-master bit, thus __e1000_resume()
and e1000_io_slot_reset() must set it back after restoring configuration space.

This patch set get_link_status before calling pm_runtime_put() in e1000_open()
to allow e1000_idle() get real link status and schedule first runtime suspend.

This patch also enables wakeup for device if management mode is enabled
(like for WoL) as result pci_prepare_to_sleep() would setup wakeup without
special actions like custom 'enable_wakeup' sign.

Cc: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Borislav Petkov <bp@suse.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-07 02:48:30 -08:00
Konstantin Khlebnikov 4e0855dff0 e1000e: fix pci-device enable-counter balance
This patch removes redundant and unbalanced pci_disable_device() from
__e1000_shutdown(). pci_clear_master() is enough, device can go into
suspended state with elevated enable_cnt.

Bug was introduced in commit 23606cf5d1
("e1000e / PCI / PM: Add basic runtime PM support (rev. 4)") in v2.6.35

Cc: Bruce Allan <bruce.w.allan@intel.com>
CC: Stable <stable@kernel.org>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Borislav Petkov <bp@suse.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-03-07 02:27:25 -08:00
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
Koki Sanagi e792cd916c e1000e: display a warning message when SmartSpeed works
Current e1000e driver doesn't tell nothing when Link Speed is downgraded due to
SmartSpeed.  As a result, users suspect that there is something wrong with
NIC.  If the cause of it is SmartSpeed, there is no means to replace NIC. This
patch make e1000e notify users that SmartSpeed worked.

Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-15 21:46:46 -08:00
Bruce Allan a7a1d9da29 e1000e: cleanup checkpatch braces checks
Resolve the following strict checkpatch checks:
CHECK:BRACES: Blank lines aren't necessary after an open brace '{'
CHECK:BRACES: Blank lines aren't necessary before a close brace '}'
CHECK:BRACES: braces {} should be used on all arms of this statement

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-05 00:37:47 -08:00
Bruce Allan c556d6072d e1000e: convert enums of register offsets and move #defines to regs.h
There are enough register offsets to warrant being in their own header
file, and doing so logically separates them from other header file content.
They have been converted from an enumerated data type to #defines as is
done in all the other Intel wired ethernet drivers.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-05 00:30:59 -08:00
Bruce Allan 948f97aca6 e1000e: cosmetic move of #defines and prototypes to the new manage.h
Move #defines, function prototypes and data types which are applicable to
all/most devices supported by the driver but are specific to the
manageability component of each device to the new manage.h header file.
These #defines, function prototypes and data types can be used by other
files in the driver and moving them to the manageability-specific file
makes it clearer to which component they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-05 00:12:27 -08:00
Bruce Allan d22631134d e1000e: cosmetic move of #defines and function prototypes to the new nvm.h
Move #defines and function prototypes which are applicable to all/most
devices supported by the driver and are specific to the NVM component of
each device to the new nvm.h header file.  These #defines and function
prototypes can be used by other files in the driver and moving them to the
NVM-specific file makes it clearer to which component they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-05 00:05:41 -08:00
Bruce Allan 93b9f8bfd7 e1000e: cosmetic move of #defines and function prototypes to the new phy.h
Move #defines and function prototypes which are applicable to all/most
devices supported by the driver and are specific to the PHY component of
each device to the new phy.h header file.  These function prototypes can be
used by other files in the driver and moving them to the PHY-specific file
makes it clearer to which component they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-04 23:59:16 -08:00
Bruce Allan bdfe2da6ae e1000e: cosmetic move of function prototypes to the new mac.h
Move prototypes for functions which are applicable to all/most devices
supported by the driver and are specific to the MAC component of each
device to the new mac.h header file.  These function prototypes can be used
by other files in the driver and moving them to the MAC-specific file makes
it clearer to which component they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-04 23:52:44 -08:00
Bruce Allan 1b41db37f4 e1000e: cosmetic move of #defines and prototypes to the new ich8lan.h
Move #defines and function prototypes specific to the ICH/PCH family of
devices (ICH8/82562, ICH8/82566, ICH8/82567, ICH9/82562, ICH9/82566,
ICH9/82567, ICH10/82567, 82577, 82578, 82579, I217, I218) to the new
ich8lan.h header file (the convention for Intel wired ethernet drivers is
to use the name of the first device in the family for related file and
function names).  These defines and function prototypes can be used by
other files in the driver and moving them to the ICH/PCH-family-specific
file makes it clearer to which devices they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-04 23:45:47 -08:00
Bruce Allan 21b5a6f8ff e1000e: cosmetic move of #defines to the new 80003es2lan.h
Move #defines specific to the ESB2/82563 family of devices to the new
80003es2lan.h header file.  These defines can be used by other files in the
driver and moving them to the 80003es2lan-family-specific file makes it
clearer to which devices they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-04 23:32:20 -08:00
Bruce Allan f25701df2e e1000e: cosmetic move of #defines and prototypes to the new 82571.h
Move #defines and function prototypes specific to the 8257x family of
devices (82571, 82572, 82573, 82574, 82583) to the new 82571.h header file
(the convention for Intel wired ethernet drivers is to use the name of the
first device in the family for related file and function names).  These
defines and function prototypes can be used by other files in the driver
and moving them to the 8257x-family-specific file makes it clearer to which
devices they are applicable.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-02-04 23:24:41 -08:00
Bruce Allan c2ade1a41d e1000e: use generic IEEE MII definitions
For standard IEEE MII-compatible transceivers, the kernel has generic
register and bit definitions.  Use those instead of redundant local
defines.

Do not replace references of MII_CR_SPEED_10 with BMCR_SPEED10 (0x0000)
when it is not necessary (i.e. when it is bitwise OR'ed with another
value).

Some whitespace issues in the surrounding context of the above changes are
also cleaned up.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-31 22:34:59 -08:00
Bruce Allan 8bb628697f e1000e: resolve -Wunused-parameter compile warnings
Remove the unused parameter when possible, otherwise use __always_unused
attribute.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-31 22:28:39 -08:00
Bruce Allan 9e01990181 e1000e: update driver version string
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-31 22:22:28 -08:00
Bruce Allan 55c5f55e52 e1000e: cleanup some whitespace and indentation issues
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-31 22:16:11 -08:00
Bruce Allan c063f606fd e1000e: cleanup: group OR'ed bit settings with parens
For clarity, wrap OR'ed bit settings with parentheses.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-31 22:09:55 -08:00
Bruce Allan 0cdc63449d e1000e: cleanup defines.h
Remove redundant defines which are defined elsewhere.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-31 22:03:36 -08:00