diff options
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.c')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.c | 109 |
1 files changed, 97 insertions, 12 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index fba2556af1da..fc94665ead68 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -2418,18 +2418,82 @@ static struct ibmvfc_event *ibmvfc_init_tmf(struct ibmvfc_queue *queue, return evt; } -/** - * ibmvfc_cancel_all - Cancel all outstanding commands to the device - * @sdev: scsi device to cancel commands - * @type: type of error recovery being performed - * - * This sends a cancel to the VIOS for the specified device. This does - * NOT send any abort to the actual device. That must be done separately. - * - * Returns: - * 0 on success / other on failure - **/ -static int ibmvfc_cancel_all(struct scsi_device *sdev, int type) +static int ibmvfc_cancel_all_mq(struct scsi_device *sdev, int type) +{ + struct ibmvfc_host *vhost = shost_priv(sdev->host); + struct ibmvfc_event *evt, *found_evt, *temp; + struct ibmvfc_queue *queues = vhost->scsi_scrqs.scrqs; + unsigned long flags; + int num_hwq, i; + int fail = 0; + LIST_HEAD(cancelq); + u16 status; + + ENTER; + spin_lock_irqsave(vhost->host->host_lock, flags); + num_hwq = vhost->scsi_scrqs.active_queues; + for (i = 0; i < num_hwq; i++) { + spin_lock(queues[i].q_lock); + spin_lock(&queues[i].l_lock); + found_evt = NULL; + list_for_each_entry(evt, &queues[i].sent, queue_list) { + if (evt->cmnd && evt->cmnd->device == sdev) { + found_evt = evt; + break; + } + } + spin_unlock(&queues[i].l_lock); + + if (found_evt && vhost->logged_in) { + evt = ibmvfc_init_tmf(&queues[i], sdev, type); + evt->sync_iu = &queues[i].cancel_rsp; + ibmvfc_send_event(evt, vhost, default_timeout); + list_add_tail(&evt->cancel, &cancelq); + } + + spin_unlock(queues[i].q_lock); + } + spin_unlock_irqrestore(vhost->host->host_lock, flags); + + if (list_empty(&cancelq)) { + if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) + sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); + return 0; + } + + sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); + + list_for_each_entry_safe(evt, temp, &cancelq, cancel) { + wait_for_completion(&evt->comp); + status = be16_to_cpu(evt->queue->cancel_rsp.mad_common.status); + list_del(&evt->cancel); + ibmvfc_free_event(evt); + + if (status != IBMVFC_MAD_SUCCESS) { + sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); + switch (status) { + case IBMVFC_MAD_DRIVER_FAILED: + case IBMVFC_MAD_CRQ_ERROR: + /* Host adapter most likely going through reset, return success to + * the caller will wait for the command being cancelled to get returned + */ + break; + default: + fail = 1; + break; + } + } + } + + if (fail) + return -EIO; + + sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); + LEAVE; + return 0; +} + +static int ibmvfc_cancel_all_sq(struct scsi_device *sdev, int type) { struct ibmvfc_host *vhost = shost_priv(sdev->host); struct ibmvfc_event *evt, *found_evt; @@ -2499,6 +2563,27 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type) } /** + * ibmvfc_cancel_all - Cancel all outstanding commands to the device + * @sdev: scsi device to cancel commands + * @type: type of error recovery being performed + * + * This sends a cancel to the VIOS for the specified device. This does + * NOT send any abort to the actual device. That must be done separately. + * + * Returns: + * 0 on success / other on failure + **/ +static int ibmvfc_cancel_all(struct scsi_device *sdev, int type) +{ + struct ibmvfc_host *vhost = shost_priv(sdev->host); + + if (vhost->mq_enabled && vhost->using_channels) + return ibmvfc_cancel_all_mq(sdev, type); + else + return ibmvfc_cancel_all_sq(sdev, type); +} + +/** * ibmvfc_match_key - Match function for specified cancel key * @evt: ibmvfc event struct * @key: cancel key to match |