diff options
| author | Michael Chan <mchan@broadcom.com> | 2005-10-26 15:48:35 -0700 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-10-28 16:07:30 -0400 |
| commit | 28fbef78a420acdea20570d31f3bdcbfa0cac0d2 (patch) | |
| tree | ef68381a6e776a802038e39529e89a0d1390fae0 /drivers | |
| parent | a4e2b347848bf626b822599329933887dc90e50f (diff) | |
| download | lwn-28fbef78a420acdea20570d31f3bdcbfa0cac0d2.tar.gz lwn-28fbef78a420acdea20570d31f3bdcbfa0cac0d2.zip | |
[PATCH] tg3: fix ASF heartbeat
Change the ASF heart beat to 5 seconds for faster detection of system
crash. The driver sends the heartbeat every 2 seconds and the ASF
firmware will timeout and reset the device if no heartbeat is received
after 5 seconds. The old scheme of 2 minutes is ineffective.
tg3_write_mem_fast() is added to speed up the IO to send the heartbeat.
When no workaround is needed, it will use direct MMIO to memory space
to write to memory.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/tg3.c | 21 | ||||
| -rw-r--r-- | drivers/net/tg3.h | 1 |
2 files changed, 17 insertions, 5 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index cf2204f5b7f9..479be21425fb 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -470,6 +470,15 @@ static void tg3_write_mem(struct tg3 *tp, u32 off, u32 val) spin_unlock_irqrestore(&tp->indirect_lock, flags); } +static void tg3_write_mem_fast(struct tg3 *tp, u32 off, u32 val) +{ + /* If no workaround is needed, write to mem space directly */ + if (tp->write32 != tg3_write_indirect_reg32) + tw32(NIC_SRAM_WIN_BASE + off, val); + else + tg3_write_mem(tp, off, val); +} + static void tg3_read_mem(struct tg3 *tp, u32 off, u32 *val) { unsigned long flags; @@ -6195,14 +6204,16 @@ static void tg3_timer(unsigned long __opaque) tp->timer_counter = tp->timer_multiplier; } - /* Heartbeat is only sent once every 120 seconds. */ + /* Heartbeat is only sent once every 2 seconds. */ if (!--tp->asf_counter) { if (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) { u32 val; - tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX, FWCMD_NICDRV_ALIVE); - tg3_write_mem(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 4); - tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX, 3); + tg3_write_mem_fast(tp, NIC_SRAM_FW_CMD_MBOX, + FWCMD_NICDRV_ALIVE2); + tg3_write_mem_fast(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 4); + /* 5 seconds timeout */ + tg3_write_mem_fast(tp, NIC_SRAM_FW_CMD_DATA_MBOX, 5); val = tr32(GRC_RX_CPU_EVENT); val |= (1 << 14); tw32(GRC_RX_CPU_EVENT, val); @@ -6413,7 +6424,7 @@ static int tg3_open(struct net_device *dev) tp->timer_counter = tp->timer_multiplier = (HZ / tp->timer_offset); tp->asf_counter = tp->asf_multiplier = - ((HZ / tp->timer_offset) * 120); + ((HZ / tp->timer_offset) * 2); init_timer(&tp->timer); tp->timer.expires = jiffies + tp->timer_offset; diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 456ef2b3d0ef..fb7e2a5f4a08 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -1512,6 +1512,7 @@ #define FWCMD_NICDRV_IPV6ADDR_CHG 0x00000004 #define FWCMD_NICDRV_FIX_DMAR 0x00000005 #define FWCMD_NICDRV_FIX_DMAW 0x00000006 +#define FWCMD_NICDRV_ALIVE2 0x0000000d #define NIC_SRAM_FW_CMD_LEN_MBOX 0x00000b7c #define NIC_SRAM_FW_CMD_DATA_MBOX 0x00000b80 #define NIC_SRAM_FW_ASF_STATUS_MBOX 0x00000c00 |