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23fbb5a87c
linux/drivers/net/ethernet
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Petri Gynther 23fbb5a87c emac: Fix EMAC soft reset on 460EX/GT 
Fix EMAC soft reset on 460EX/GT to select the right PHY clock source
before and after the soft reset.

EMAC with PHY should use the clock from PHY during soft reset.
EMAC without PHY should use the internal clock during soft reset.

PPC460EX/GT Embedded Processor Advanced User's Manual
section 28.10.1 Mode Register 0 (EMACx_MR0) states:
Note: The PHY must provide a TX Clk in order to perform a soft reset
of the EMAC. If none is present, select the internal clock
(SDR0_ETH_CFG[EMACx_PHY_CLK] = 1).
After a soft reset, select the external clock.

Without the fix, 460EX/GT-based boards with RGMII PHYs attached to
EMACs experience EMAC interrupt storm and system watchdog reset when
issuing "ifconfig eth0 down" + "ifconfig eth0 up" a few times.
The system enters endless loop of serving emac_irq() with EMACx_ISR
register stuck at value 0x10000000 (Rx parity error).

With the fix, the above issue is no longer observed.

Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11 17:40:14 -07:00
..
3com 3c59x: fix PCI resource management 2013-05-11 17:40:14 -07:00
8390 Char / Misc driver update for 3.10-rc1 2013-04-29 11:18:34 -07:00
adaptec net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
adi bfin_mac: fix error return code in bfin_mac_probe() 2013-05-08 13:13:30 -07:00
aeroflex drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
alteon net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
amd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
apple drivers:net: Remove dma_alloc_coherent OOM messages 2013-03-15 08:56:58 -04:00
atheros Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
broadcom drivers/net: rename random32() to prandom_u32() 2013-05-07 18:38:27 -07:00
brocade net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
cadence net/ethernet: MACB should depend on HAS_DMA 2013-05-11 16:28:24 -07:00
calxeda net/ethernet: NET_CALXEDA_XGMAC should depend on HAS_DMA 2013-05-11 16:28:23 -07:00
chelsio cxgb4: fix error recovery when t4_fw_hello returns a positive value 2013-05-03 16:10:34 -04:00
cirrus cirrus: cs89x0: remove two obsolete Kconfig macros 2013-03-29 15:40:24 -04:00
cisco net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
davicom Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-01 13:36:50 -04:00
dec Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-03-20 12:46:26 -04:00
dlink
emulex be2net: disable TX in be_close() 2013-05-08 11:59:48 -07:00
faraday net: ftgmac100: Use module_platform_driver() 2013-03-18 13:02:37 -04:00
freescale net: fec: enable hardware checksum only on imx6q-fec 2013-05-11 16:12:44 -07:00
fujitsu Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
hp
i825xx
ibm emac: Fix EMAC soft reset on 460EX/GT 2013-05-11 17:40:14 -07:00
icplus
intel e1000e: fix scheduling while atomic bug 2013-05-07 07:51:37 -07:00
marvell sky2: Fix crash on receiving VLAN frames 2013-05-03 16:10:34 -04:00
mellanox net/mlx4: Strengthen VLAN tags/priorities enforcement in VST mode 2013-05-11 16:12:44 -07:00
micrel ks8851: Remove unneeded PM_OPS definitions 2013-04-16 16:30:51 -04:00
microchip net: ethernet: enc28j60: use spi_get_drvdata() and spi_set_drvdata() 2013-04-07 16:48:19 -04:00
myricom net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
natsemi net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
neterion net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
nuvoton drivers:net: Remove dma_alloc_coherent OOM messages 2013-03-15 08:56:58 -04:00
nvidia net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
nxp net/nxp/lpc_eth: Drop ifdef CONFIG_OF_NET 2013-04-02 16:43:56 -04:00
octeon
oki-semi pch_gbe: minor: report the actual error on MTU change 2013-04-16 16:43:35 -04:00
packetengines
pasemi drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
qlogic qlcnic: Fix validation of link event command. 2013-05-11 16:01:15 -07:00
rdc
realtek Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-30 03:55:20 -04:00
renesas sh_eth: use random MAC address if no valid one supplied 2013-04-30 15:37:08 -04:00
seeq
sfc sfc: fix return value check in efx_ptp_probe_channel() 2013-05-08 13:13:30 -07:00
sgi drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
silan
sis sis900: check for DMA map errors 2013-04-15 14:11:37 -04:00
smsc ARM: arm-soc non-critical fixes for 3.10 2013-05-02 08:56:55 -07:00
stmicro net/ethernet: STMMAC_ETH should depend on HAS_DMA 2013-05-11 16:28:23 -07:00
sun net: add ETH_P_802_3_MIN 2013-03-28 01:20:42 -04:00
tehuti net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
ti drivers: net: cpsw: irq not disabled in cpsw isr in particular sequence 2013-05-02 16:52:04 -04:00
tile tile: support new Tilera hypervisor 2013-05-02 16:20:31 -04:00
toshiba net/spider_net: fix error return code in spider_net_open() 2013-05-08 13:13:29 -07:00
tundra drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0) 2013-03-17 12:50:24 -04:00
via net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
wiznet net: ethernet: wiznet: add CONFIG_PM_SLEEP to suspend/resume functions 2013-03-26 12:47:17 -04:00
xilinx net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_* 2013-04-19 14:45:26 -04:00
xircom Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
xscale
dnet.c
dnet.h
ethoc.c
fealnx.c
jme.c net: vlan: add protocol argument to packet tagging functions 2013-04-19 14:46:06 -04:00
jme.h
Kconfig
korina.c
lantiq_etop.c lantiq_etop: use free_netdev(netdev) instead of kfree() 2013-03-21 11:50:10 -04:00
Makefile
netx-eth.c
s6gmac.c s6gmac: fix error return code in s6gmac_probe() 2013-03-22 10:23:42 -04:00