AuxXxilium/linux_dsm_epyc7002
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1827853354
linux_dsm_epyc7002/drivers/net/ethernet/intel
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Aaron Sierra 1827853354 igb: reset the PHY before reading the PHY ID 
Several people have reported firmware leaving the I210/I211 PHY's page
select register set to something other than the default of zero. This
causes the first accesses, PHY_IDx register reads, to access something
else, resulting in device probe failure:

    igb: Intel(R) Gigabit Ethernet Network Driver - version 5.4.0-k
    igb: Copyright (c) 2007-2014 Intel Corporation.
    igb: probe of 0000:01:00.0 failed with error -2

This problem began for them after a previous patch I submitted was
applied:

    commit 2a3cdead8b
    Author: Aaron Sierra <asierra@xes-inc.com>
    Date:   Tue Nov 3 12:37:09 2015 -0600

        igb: Remove GS40G specific defines/functions

I personally experienced this problem after attempting to PXE boot from
I210 devices using this firmware:

    Intel(R) Boot Agent GE v1.5.78
    Copyright (C) 1997-2014, Intel Corporation

Resetting the PHY before reading from it, ensures the page select
register is in its default state and doesn't make assumptions about
the PHY's register set before the PHY has been probed.

Cc: Matwey V. Kornilov <matwey@sai.msu.ru>
Cc: Chris Arges <carges@vectranetworks.com>
Cc: Jochen Henneberg <jh@henneberg-systemdesign.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Tested-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Tested-by: Chris J Arges <christopherarges@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-01-06 02:18:51 -08:00
..
e1000 e1000: use disable_hardirq() for e1000_netpoll() 2016-12-10 23:31:19 -05:00
e1000e e1000e: driver trying to free already-free irq 2017-01-06 02:18:49 -08:00
fm10k ethernet/intel: use core min/max MTU checking 2016-10-18 11:34:18 -04:00
i40e i40e: don't truncate match_method assignment 2016-12-10 23:31:19 -05:00
i40evf i40e: Add functions which apply correct PHY access method for read and write operation 2016-12-06 21:09:39 -08:00
igb igb: reset the PHY before reading the PHY ID 2017-01-06 02:18:51 -08:00
igbvf Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-03 12:29:53 -05:00
ixgb Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
ixgbe ixgbe: Add PF support for VF promiscuous mode 2017-01-03 13:03:40 -08:00
ixgbevf ixgbevf: Add support for VF promiscuous mode 2017-01-03 13:03:40 -08:00
e100.c ethernet/intel: use core min/max MTU checking 2016-10-18 11:34:18 -04:00
Kconfig ptp_clock: Allow for it to be optional 2016-11-16 09:26:34 +01:00
Makefile fm10k: Add skeletal frame for Intel(R) FM10000 Ethernet Switch Host Interface Driver 2014-09-23 03:59:13 -07:00