diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_os.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_os.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 489d7cd5e0c..456cd6f23f0 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -121,6 +121,7 @@ static int qla4xxx_slave_alloc(struct scsi_device *device); static int qla4xxx_slave_configure(struct scsi_device *device); static void qla4xxx_slave_destroy(struct scsi_device *sdev); static mode_t ql4_attr_is_visible(int param_type, int param); +static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type); static struct qla4_8xxx_legacy_intr_set legacy_intr[] = QLA82XX_LEGACY_INTR_CONFIG; @@ -148,6 +149,7 @@ static struct scsi_host_template qla4xxx_driver_template = { .max_sectors = 0xFFFF, .shost_attrs = qla4xxx_host_attrs, + .host_reset = qla4xxx_host_reset, .vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC, }; @@ -3133,6 +3135,7 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, mutex_init(&ha->mbox_sem); init_completion(&ha->mbx_intr_comp); + init_completion(&ha->disable_acb_comp); spin_lock_init(&ha->hardware_lock); @@ -3761,6 +3764,110 @@ static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) return return_status; } +static int qla4xxx_context_reset(struct scsi_qla_host *ha) +{ + uint32_t mbox_cmd[MBOX_REG_COUNT]; + uint32_t mbox_sts[MBOX_REG_COUNT]; + struct addr_ctrl_blk_def *acb = NULL; + uint32_t acb_len = sizeof(struct addr_ctrl_blk_def); + int rval = QLA_SUCCESS; + dma_addr_t acb_dma; + + acb = dma_alloc_coherent(&ha->pdev->dev, + sizeof(struct addr_ctrl_blk_def), + &acb_dma, GFP_KERNEL); + if (!acb) { + ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n", + __func__); + rval = -ENOMEM; + goto exit_port_reset; + } + + memset(acb, 0, acb_len); + + rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len); + if (rval != QLA_SUCCESS) { + rval = -EIO; + goto exit_free_acb; + } + + rval = qla4xxx_disable_acb(ha); + if (rval != QLA_SUCCESS) { + rval = -EIO; + goto exit_free_acb; + } + + wait_for_completion_timeout(&ha->disable_acb_comp, + DISABLE_ACB_TOV * HZ); + + rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma); + if (rval != QLA_SUCCESS) { + rval = -EIO; + goto exit_free_acb; + } + +exit_free_acb: + dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def), + acb, acb_dma); +exit_port_reset: + DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__, + rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED")); + return rval; +} + +static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type) +{ + struct scsi_qla_host *ha = to_qla_host(shost); + int rval = QLA_SUCCESS; + + if (ql4xdontresethba) { + DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n", + __func__)); + rval = -EPERM; + goto exit_host_reset; + } + + rval = qla4xxx_wait_for_hba_online(ha); + if (rval != QLA_SUCCESS) { + DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host " + "adapter\n", __func__)); + rval = -EIO; + goto exit_host_reset; + } + + if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) + goto recover_adapter; + + switch (reset_type) { + case SCSI_ADAPTER_RESET: + set_bit(DPC_RESET_HA, &ha->dpc_flags); + break; + case SCSI_FIRMWARE_RESET: + if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { + if (is_qla8022(ha)) + /* set firmware context reset */ + set_bit(DPC_RESET_HA_FW_CONTEXT, + &ha->dpc_flags); + else { + rval = qla4xxx_context_reset(ha); + goto exit_host_reset; + } + } + break; + } + +recover_adapter: + rval = qla4xxx_recover_adapter(ha); + if (rval != QLA_SUCCESS) { + DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n", + __func__)); + rval = -EIO; + } + +exit_host_reset: + return rval; +} + /* PCI AER driver recovers from all correctable errors w/o * driver intervention. For uncorrectable errors PCI AER * driver calls the following device driver's callbacks |