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cxgb4: Check for firmware errors in the mailbox command loop

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Check for firmware errors in the mailbox command loop and report
them differently rather than simply timing out when the firmware goes
belly up.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2016-05-03 18:58:02 +05:30 committed by David S. Miller
parent 5a20f5cfd7
commit f358738b1d
1 changed files with 6 additions and 2 deletions
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8
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
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@ -293,6 +293,7 @@ int t4_wr_mbox_meat_timeout(struct adapter *adap, int mbox, const void *cmd,
u32 data_reg = PF_REG(mbox, CIM_PF_MAILBOX_DATA_A);
u32 ctl_reg = PF_REG(mbox, CIM_PF_MAILBOX_CTRL_A);
__be64 cmd_rpl[MBOX_LEN / 8];
u32 pcie_fw;
if ((size & 15) || size > MBOX_LEN)
return -EINVAL;
@ -331,7 +332,10 @@ int t4_wr_mbox_meat_timeout(struct adapter *adap, int mbox, const void *cmd,
delay_idx = 0;
ms = delay[0];
for (i = 0; i < timeout; i += ms) {
for (i = 0;
!((pcie_fw = t4_read_reg(adap, PCIE_FW_A)) & PCIE_FW_ERR_F) &&
i < timeout;
i += ms) {
if (sleep_ok) {
ms = delay[delay_idx]; /* last element may repeat */
if (delay_idx < ARRAY_SIZE(delay) - 1)
@ -366,7 +370,7 @@ int t4_wr_mbox_meat_timeout(struct adapter *adap, int mbox, const void *cmd,
}
}
ret = -ETIMEDOUT;
ret = (pcie_fw & PCIE_FW_ERR_F) ? -ENXIO : -ETIMEDOUT;
t4_record_mbox(adap, cmd, MBOX_LEN, access, ret);
dev_err(adap->pdev_dev, "command %#x in mailbox %d timed out\n",
*(const u8 *)cmd, mbox);