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Commit 4c6a794d authored by Vikas Chaudhary's avatar Vikas Chaudhary Committed by James Bottomley
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[SCSI] qla4xxx: Perform context resets in case of context failures. 



For 4032, context reset was the same as chip reset, and any firmware
issue was recovered by performing a chip reset.
For 82xx, the iSCSI firmware runs along with FCoE and the NIC
firmware contexts, and an error encountered doesnot essentially mean
that a chip reset is necessary.

Perform Chip resets only in the following cases:
1. Mailbox system error.
2. Mailbox command timeout.
3. fw_heartbeat_counter counter stops incrementing.

For all other cases, only perform a context reset.
1. Command Completion with an invalid srb.
2. Other mailbox failures.

Signed-off-by: default avatarVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: default avatarShyam Sunder <shyam.sunder@qlogic.com>
Reviewed-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 0c70d84b

drivers/scsi/qla4xxx/ql4_isr.c

+19 −11
Original line number Diff line number Diff line
@@ -123,12 +123,12 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha, 


	srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));

	if (!srb) {

		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid "

			      "handle 0x%x, sp=%p. This cmd may have already "

			      "been completed.\n", ha->host_no, __func__,

			      le32_to_cpu(sts_entry->handle), srb));

		ql4_printk(KERN_WARNING, ha, "%s invalid status entry: "

		    " handle=0x%0x\n", __func__, sts_entry->handle);

			   "handle=0x%0x, srb=%p\n", __func__,

			   sts_entry->handle, srb);

		if (is_qla8022(ha))

			set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);

		else

			set_bit(DPC_RESET_HA, &ha->dpc_flags);

		return;

	}
@@ -563,6 +563,10 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, 
		case MBOX_ASTS_DHCP_LEASE_EXPIRED:

			DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, "

				      "Reset HA\n", ha->host_no, mbox_status));

			if (is_qla8022(ha))

				set_bit(DPC_RESET_HA_FW_CONTEXT,

					&ha->dpc_flags);

			else

				set_bit(DPC_RESET_HA, &ha->dpc_flags);

			break;
@@ -617,9 +621,13 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, 
			    (mbox_sts[2] == ACB_STATE_ACQUIRING)))

				set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);

			else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) &&

			    (mbox_sts[2] == ACB_STATE_VALID))

				 (mbox_sts[2] == ACB_STATE_VALID)) {

				if (is_qla8022(ha))

					set_bit(DPC_RESET_HA_FW_CONTEXT,

						&ha->dpc_flags);

				else

					set_bit(DPC_RESET_HA, &ha->dpc_flags);

			else if ((mbox_sts[3] == ACB_STATE_UNCONFIGURED))

			} else if ((mbox_sts[3] == ACB_STATE_UNCONFIGURED))

				complete(&ha->disable_acb_comp);

			break;