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| author | Mike Christie <michaelc@cs.wisc.edu> | 2008-02-29 18:25:20 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-04-07 12:15:43 -0500 |
| commit | ce5450392fa3ab54f0a84aa3b7589f8d6f2a58af (patch) | |
| tree | 17b051094ab95842b41d9ef3bdb5b2a1ef20370a /drivers/scsi/qla4xxx/ql4_mbx.c | |
| parent | 30bd7df8ced23eefec87a5cda96dc99b002ed9da (diff) | |
| download | kernel_samsung_smdk4412-ce5450392fa3ab54f0a84aa3b7589f8d6f2a58af.zip kernel_samsung_smdk4412-ce5450392fa3ab54f0a84aa3b7589f8d6f2a58af.tar.gz kernel_samsung_smdk4412-ce5450392fa3ab54f0a84aa3b7589f8d6f2a58af.tar.bz2 | |
[SCSI] qla4xxx: Add target reset functionality
This patch adds target reset functionalty.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_mbx.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_mbx.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c index 35cd73c..c577d79 100644 --- a/drivers/scsi/qla4xxx/ql4_mbx.c +++ b/drivers/scsi/qla4xxx/ql4_mbx.c @@ -713,6 +713,45 @@ int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry, return status; } +/** + * qla4xxx_reset_target - issues target Reset + * @ha: Pointer to host adapter structure. + * @db_entry: Pointer to device database entry + * @un_entry: Pointer to lun entry structure + * + * This routine performs a TARGET RESET on the specified target. + * The caller must ensure that the ddb_entry pointers + * are valid before calling this routine. + **/ +int qla4xxx_reset_target(struct scsi_qla_host *ha, + struct ddb_entry *ddb_entry) +{ + uint32_t mbox_cmd[MBOX_REG_COUNT]; + uint32_t mbox_sts[MBOX_REG_COUNT]; + int status = QLA_SUCCESS; + + DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no, + ddb_entry->os_target_id)); + + /* + * Send target reset command to ISP, so that the ISP will return all + * outstanding requests with RESET status + */ + memset(&mbox_cmd, 0, sizeof(mbox_cmd)); + memset(&mbox_sts, 0, sizeof(mbox_sts)); + + mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET; + mbox_cmd[1] = ddb_entry->fw_ddb_index; + mbox_cmd[5] = 0x01; /* Immediate Command Enable */ + + qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], + &mbox_sts[0]); + if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE && + mbox_sts[0] != MBOX_STS_COMMAND_ERROR) + status = QLA_ERROR; + + return status; +} int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr, uint32_t offset, uint32_t len) |