Commit e6bd0ebd authored by Giridhar Malavali's avatar Giridhar Malavali Committed by James Bottomley
Browse files

[SCSI] qla4xxx: Disable generating pause frames in case of FW hung 



In case of FW hung  ISP82xx generates continuous pause frames
which causes switch to disable port.
Added fix to disable generating pause frames in case of
FW hung

Signed-off-by: default avatarGiridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: default avatarVikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 4f77083e

drivers/scsi/qla4xxx/ql4_mbx.c

+7 −0
Original line number Diff line number Diff line
@@ -219,6 +219,13 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount, 
		ha->mailbox_timeout_count++;

		mbx_sts[0] = (-1);

		set_bit(DPC_RESET_HA, &ha->dpc_flags);

		if (is_qla8022(ha)) {

			ql4_printk(KERN_INFO, ha,

				   "disabling pause transmit on port 0 & 1.\n");

			qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,

					CRB_NIU_XG_PAUSE_CTL_P0 |

					CRB_NIU_XG_PAUSE_CTL_P1);

		}

		goto mbox_exit;

	}

drivers/scsi/qla4xxx/ql4_nx.h

+3 −0
Original line number Diff line number Diff line
@@ -39,6 +39,9 @@ enum { 
	QLA82XX_TEMP_PANIC	/* Fatal error, hardware has shut down. */

};



#define CRB_NIU_XG_PAUSE_CTL_P0		0x1

#define CRB_NIU_XG_PAUSE_CTL_P1		0x8



#define QLA82XX_HW_H0_CH_HUB_ADR	0x05

#define QLA82XX_HW_H1_CH_HUB_ADR	0x0E

#define QLA82XX_HW_H2_CH_HUB_ADR	0x03

drivers/scsi/qla4xxx/ql4_os.c

+10 −0
Original line number Diff line number Diff line
@@ -2080,6 +2080,11 @@ void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 
		dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);



		if (qla4_8xxx_check_temp(ha)) {

			ql4_printk(KERN_INFO, ha, "disabling pause"

				   " transmit on port 0 & 1.\n");

			qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,

					CRB_NIU_XG_PAUSE_CTL_P0 |

					CRB_NIU_XG_PAUSE_CTL_P1);

			set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);

			qla4xxx_wake_dpc(ha);

		} else if (dev_state == QLA82XX_DEV_NEED_RESET &&
@@ -2099,6 +2104,11 @@ void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 
		} else  {

			/* Check firmware health */

			if (qla4_8xxx_check_fw_alive(ha)) {

				ql4_printk(KERN_INFO, ha, "disabling pause"

					   " transmit on port 0 & 1.\n");

				qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,

						CRB_NIU_XG_PAUSE_CTL_P0 |

						CRB_NIU_XG_PAUSE_CTL_P1);

				halt_status = qla4_8xxx_rd_32(ha,

						QLA82XX_PEG_HALT_STATUS1);

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