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linux/drivers/net/ethernet/broadcom
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Kai-Heng Feng 2ca1c94ce0 tg3: Disable tg3 device on system reboot to avoid triggering AER 
Commit d60cd06331 ("PM: ACPI: reboot: Use S5 for reboot") caused a
reboot hang on one Dell servers so the commit was reverted.

Someone managed to collect the AER log and it's caused by MSI:
[ 148.762067] ACPI: Preparing to enter system sleep state S5
[ 148.794638] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 5
[ 148.803731] {1}[Hardware Error]: event severity: recoverable
[ 148.810191] {1}[Hardware Error]: Error 0, type: fatal
[ 148.816088] {1}[Hardware Error]: section_type: PCIe error
[ 148.822391] {1}[Hardware Error]: port_type: 0, PCIe end point
[ 148.829026] {1}[Hardware Error]: version: 3.0
[ 148.834266] {1}[Hardware Error]: command: 0x0006, status: 0x0010
[ 148.841140] {1}[Hardware Error]: device_id: 0000:04:00.0
[ 148.847309] {1}[Hardware Error]: slot: 0
[ 148.852077] {1}[Hardware Error]: secondary_bus: 0x00
[ 148.857876] {1}[Hardware Error]: vendor_id: 0x14e4, device_id: 0x165f
[ 148.865145] {1}[Hardware Error]: class_code: 020000
[ 148.870845] {1}[Hardware Error]: aer_uncor_status: 0x00100000, aer_uncor_mask: 0x00010000
[ 148.879842] {1}[Hardware Error]: aer_uncor_severity: 0x000ef030
[ 148.886575] {1}[Hardware Error]: TLP Header: 40000001 0000030f 90028090 00000000
[ 148.894823] tg3 0000:04:00.0: AER: aer_status: 0x00100000, aer_mask: 0x00010000
[ 148.902795] tg3 0000:04:00.0: AER: [20] UnsupReq (First)
[ 148.910234] tg3 0000:04:00.0: AER: aer_layer=Transaction Layer, aer_agent=Requester ID
[ 148.918806] tg3 0000:04:00.0: AER: aer_uncor_severity: 0x000ef030
[ 148.925558] tg3 0000:04:00.0: AER: TLP Header: 40000001 0000030f 90028090 00000000

The MSI is probably raised by incoming packets, so power down the device
and disable bus mastering to stop the traffic, as user confirmed this
approach works.

In addition to that, be extra safe and cancel reset task if it's running.

Cc: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/all/b8db79e6857c41dab4ef08bdf826ea7c47e3bafc.1615947283.git.josef@toxicpanda.com/
BugLink: https://bugs.launchpad.net/bugs/1917471
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20220826002530.1153296-1-kai.heng.feng@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-26 18:33:26 -07:00
..
bnx2x bnx2x: Fix comment typo 2022-08-12 11:28:19 +01:00
bnxt bnxt_en: fix LRO/GRO_HW features in ndo_fix_features callback 2022-08-23 15:32:20 -07:00
genet net: bcmgenet: Indicate MAC is in charge of PHY PM 2022-08-05 19:02:18 -07:00
b44.c ethtool: extend ringparam setting/getting API with rx_buf_len 2021-11-22 12:31:49 +00:00
b44.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bcm63xx_enet.c bcm63xx: fix Tx cleanup when NAPI poll budget is zero 2022-07-11 11:36:32 -07:00
bcm63xx_enet.h bcm63xx_enet: convert to build_skb 2021-01-07 12:39:53 -08:00
bcm4908_enet.c net: switch to netif_napi_add_tx() 2022-05-05 15:54:12 -07:00
bcm4908_enet.h net: broadcom: rename BCM4908 driver & update DT binding 2021-02-11 15:04:17 -08:00
bcmsysport.c Bitmap patches for 5.19-rc1 2022-06-04 14:04:27 -07:00
bcmsysport.h net: systemport: Add global locking for descriptor lifecycle 2021-12-16 08:15:31 -08:00
bgmac-bcma-mdio.c net: ethernet: bgmac: Fix refcount leak in bcma_mdio_mii_register 2022-06-06 14:38:15 -07:00
bgmac-bcma.c net: bgmac: Fix an erroneous kfree() in bgmac_remove() 2022-06-14 19:16:36 -07:00
bgmac-platform.c Revert "net: ethernet: bgmac: Use devm_platform_ioremap_resource_byname" 2022-02-17 08:45:34 -08:00
bgmac.c net: bgmac: Fix a BUG triggered by wrong bytes_compl 2022-08-09 12:15:44 -07:00
bgmac.h net: bgmac: remove a copy of the NAPI_POLL_WEIGHT define 2022-04-29 11:56:41 +01:00
bnx2.c bnx2: Fix an error message 2022-03-03 14:48:40 +00:00
bnx2.h ethernet/broadcom: use core min/max MTU checking 2016-10-18 11:34:18 -04:00
bnx2_fw.h
cnic.c cnic: Use the bitmap API to allocate bitmaps 2022-07-06 19:55:04 -07:00
cnic.h
cnic_defs.h net: cnic: fix spelling mistake "reserverd" -> "reserved" 2020-02-17 21:59:16 -08:00
cnic_if.h
Kconfig ethernet: fix PTP_1588_CLOCK dependencies 2021-08-13 17:49:05 -07:00
Makefile eth: tg3: silence the GCC 12 array-bounds warning 2022-05-22 22:21:11 +01:00
sb1250-mac.c eth: switch to netif_napi_add_weight() 2022-05-08 11:33:57 +01:00
tg3.c tg3: Disable tg3 device on system reboot to avoid triggering AER 2022-08-26 18:33:26 -07:00
tg3.h tg3: Read VPD with pci_vpd_alloc() 2021-08-20 15:49:00 -05:00
unimac.h net: broadcom: share header defining UniMAC registers 2021-01-08 19:17:28 -08:00