Author: np
Date: Tue Feb 26 21:25:17 2013
New Revision: 247355
URL: http://svnweb.freebsd.org/changeset/base/247355
Log:
cxgbe(4): Report unusual out of band errors from the firmware.
Obtained from: Chelsio
MFC after: 5 days
Modified:
head/sys/dev/cxgbe/common/t4_hw.c
Modified: head/sys/dev/cxgbe/common/t4_hw.c
==============================================================================
--- head/sys/dev/cxgbe/common/t4_hw.c Tue Feb 26 21:17:38 2013
(r247354)
+++ head/sys/dev/cxgbe/common/t4_hw.c Tue Feb 26 21:25:17 2013
(r247355)
@@ -154,6 +154,36 @@ u32 t4_hw_pci_read_cfg4(adapter_t *adap,
}
/*
+ * t4_report_fw_error - report firmware error
+ * @adap: the adapter
+ *
+ * The adapter firmware can indicate error conditions to the host.
+ * This routine prints out the reason for the firmware error (as
+ * reported by the firmware).
+ */
+static void t4_report_fw_error(struct adapter *adap)
+{
+ static const char *reason[] = {
+ "Crash", /* PCIE_FW_EVAL_CRASH */
+ "During Device Preparation", /* PCIE_FW_EVAL_PREP */
+ "During Device Configuration", /* PCIE_FW_EVAL_CONF */
+ "During Device Initialization", /* PCIE_FW_EVAL_INIT */
+ "Unexpected Event", /* PCIE_FW_EVAL_UNEXPECTEDEVENT
*/
+ "Insufficient Airflow", /* PCIE_FW_EVAL_OVERHEAT */
+ "Device Shutdown", /* PCIE_FW_EVAL_DEVICESHUTDOWN
*/
+ "Reserved", /* reserved */
+ };
+ u32 pcie_fw;
+
+ pcie_fw = t4_read_reg(adap, A_PCIE_FW);
+ if (!(pcie_fw & F_PCIE_FW_ERR))
+ CH_ERR(adap, "Firmware error report called with no error\n");
+ else
+ CH_ERR(adap, "Firmware reports adapter error: %s\n",
+ reason[G_PCIE_FW_EVAL(pcie_fw)]);
+}
+
+/*
* Get the reply to a mailbox command and store it in @rpl in big-endian order.
*/
static void get_mbox_rpl(struct adapter *adap, __be64 *rpl, int nflit,
@@ -267,8 +297,15 @@ int t4_wr_mbox_meat(struct adapter *adap
}
}
+ /*
+ * We timed out waiting for a reply to our mailbox command. Report
+ * the error and also check to see if the firmware reported any
+ * errors ...
+ */
CH_ERR(adap, "command %#x in mailbox %d timed out\n",
*(const u8 *)cmd, mbox);
+ if (t4_read_reg(adap, A_PCIE_FW) & F_PCIE_FW_ERR)
+ t4_report_fw_error(adap);
return -ETIMEDOUT;
}
@@ -2033,9 +2070,11 @@ static void cim_intr_handler(struct adap
{ F_TIMEOUTMAINT , "CIM PIF MA timeout", -1, 1 },
{ 0 }
};
-
int fat;
+ if (t4_read_reg(adapter, A_PCIE_FW) & F_PCIE_FW_ERR)
+ t4_report_fw_error(adapter);
+
fat = t4_handle_intr_status(adapter, A_CIM_HOST_INT_CAUSE,
cim_intr_info) +
t4_handle_intr_status(adapter, A_CIM_HOST_UPACC_INT_CAUSE,
@@ -4103,12 +4142,16 @@ retry:
/*
* Issue the HELLO command to the firmware. If it's not successful
* but indicates that we got a "busy" or "timeout" condition, retry
- * the HELLO until we exhaust our retry limit.
+ * the HELLO until we exhaust our retry limit. If we do exceed our
+ * retry limit, check to see if the firmware left us any error
+ * information and report that if so ...
*/
ret = t4_wr_mbox(adap, mbox, &c, sizeof(c), &c);
if (ret != FW_SUCCESS) {
if ((ret == -EBUSY || ret == -ETIMEDOUT) && retries-- > 0)
goto retry;
+ if (t4_read_reg(adap, A_PCIE_FW) & F_PCIE_FW_ERR)
+ t4_report_fw_error(adap);
return ret;
}
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