Hi,
We got some issue with 80003ES2LAN on-board GE NIC on Intel
motherboard. May some experts kindly help ? Please copy my mailing
address in your reply.
In a couple of instances, we observed CPU hang when reading following
PHY registers respectively on on-board GE NIC [80003ES2LAN] on Intel
motherboard. Related code snippet is copied below.
Since those registers are related to swfw synchronization, we wonder
whether the hang is purely due to hardware/PHY failure, or is probably
due to any driver bug (e.g. related to swfw synchronization). Any
comment or suggestion is highly appreciated.
(1) swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC)
(2) swsm = E1000_READ_REG(hw, E1000_SWSM);
Driver is e1000-7.5.5 [we noticed similar behavior in latest
e1000e-0.4.1.7]
firmware-version: 1.0-0
bus-info: 0000:05:00.0
OS is 2.6.12 mainline kernel.
The e1000-7.5.5 driver code that causes cpu hang:
389 static s32
390 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16
mask)
391 {
392 u32 swfw_sync;
393 u32 swmask = mask;
394 u32 fwmask = mask << 16;
395 s32 ret_val = E1000_SUCCESS;
396 s32 i = 0, timeout = 200;
397
398 DEBUGFUNC("e1000_acquire_swfw_sync_80003es2lan");
399
400 while (i < timeout) {
401 if (e1000_get_hw_semaphore_generic(hw)) {
402 ret_val = -E1000_ERR_SWFW_SYNC;
403 goto out;
404 }
405
406 swfw_sync = E1000_READ_REG(hw,
E1000_SW_FW_SYNC); <==##### HANG ABOVE #####==>
407 if (!(swfw_sync & (fwmask | swmask)))
408 break;
void
e1000_put_hw_semaphore_generic(struct e1000_hw *hw) {
u32 swsm;
DEBUGFUNC("e1000_put_hw_semaphore_generic");
swsm = E1000_READ_REG(hw, E1000_SWSM); <==##### HANG ABOVE
#####==>
swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
E1000_WRITE_REG(hw, E1000_SWSM, swsm); }
# lspci | grep thern
05:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
05:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet
Thanks!
-Yanping
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