lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

tg3: Prevent tx BD corruption

Browse Source 
This patch prevents a tx BD corruption bug by preventing the device from
powering down the PLL from L1 if the link speed is 10Mbps or 100Mbps.

The same bits are also used to prevent a system hang during chip reset
resulting from a complicated set of events that ultimately leads to
PCIe block register corruption.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson
2009-08-25 10:07:27 +00:00
committed by David S. Miller
parent 521e6b90dd
commit 255ca311b6
2 changed files with 36 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/net/tg3.h
View File

@@ -866,6 +866,7 @@
#define RCVLPC_STATSCTRL_ENABLE 0x00000001
#define RCVLPC_STATSCTRL_FASTUPD 0x00000002
#define RCVLPC_STATS_ENABLE 0x00002018
#define RCVLPC_STATSENAB_ASF_FIX 0x00000002
#define RCVLPC_STATSENAB_DACK_FIX 0x00040000
#define RCVLPC_STATSENAB_LNGBRST_RFIX 0x00400000
#define RCVLPC_STATS_INCMASK 0x0000201c
@@ -1704,7 +1705,12 @@
#define PCIE_PWR_MGMT_L1_THRESH_MSK 0x0000ff00
#define PCIE_PWR_MGMT_L1_THRESH_4MS 0x0000ff00
#define PCIE_PWR_MGMT_EXT_ASPM_TMR_EN 0x01000000
/* 0x7d2c --> 0x7e70 unused */
/* 0x7d2c --> 0x7d54 unused */
#define TG3_PCIE_LNKCTL 0x00007d54
#define TG3_PCIE_LNKCTL_L1_PLL_PD_EN 0x00000008
#define TG3_PCIE_LNKCTL_L1_PLL_PD_DIS 0x00000080
/* 0x7d58 --> 0x7e70 unused */
#define TG3_PCIE_EIDLE_DELAY 0x00007e70
#define TG3_PCIE_EIDLE_DELAY_MASK 0x0000001f
@@ -2650,6 +2656,7 @@ struct tg3 {
#define TG3_FLG3_PHY_ENABLE_APD 0x00001000
#define TG3_FLG3_5755_PLUS 0x00002000
#define TG3_FLG3_NO_NVRAM 0x00004000
#define TG3_FLG3_TOGGLE_10_100_L1PLLPD 0x00008000
struct timer_list timer;
u16 timer_counter;