diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_iocb.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_iocb.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_iocb.c b/drivers/scsi/qla4xxx/ql4_iocb.c index 75fcd82a8fc..e9def626021 100644 --- a/drivers/scsi/qla4xxx/ql4_iocb.c +++ b/drivers/scsi/qla4xxx/ql4_iocb.c @@ -381,3 +381,69 @@ queuing_error: return QLA_ERROR; } +int qla4xxx_send_passthru0(struct iscsi_task *task) +{ + struct passthru0 *passthru_iocb; + struct iscsi_session *sess = task->conn->session; + struct ddb_entry *ddb_entry = sess->dd_data; + struct scsi_qla_host *ha = ddb_entry->ha; + struct ql4_task_data *task_data = task->dd_data; + uint16_t ctrl_flags = 0; + unsigned long flags; + int ret = QLA_ERROR; + + spin_lock_irqsave(&ha->hardware_lock, flags); + task_data->iocb_req_cnt = 1; + /* Put the IOCB on the request queue */ + if (!qla4xxx_space_in_req_ring(ha, task_data->iocb_req_cnt)) + goto queuing_error; + + passthru_iocb = (struct passthru0 *) ha->request_ptr; + + memset(passthru_iocb, 0, sizeof(struct passthru0)); + passthru_iocb->hdr.entryType = ET_PASSTHRU0; + passthru_iocb->hdr.systemDefined = SD_ISCSI_PDU; + passthru_iocb->hdr.entryCount = task_data->iocb_req_cnt; + passthru_iocb->handle = task->itt; + passthru_iocb->target = cpu_to_le16(ddb_entry->fw_ddb_index); + passthru_iocb->timeout = cpu_to_le16(PT_DEFAULT_TIMEOUT); + + /* Setup the out & in DSDs */ + if (task->data_count) { + memcpy((uint8_t *)task_data->req_buffer + + sizeof(struct iscsi_hdr), task->data, task->data_count); + ctrl_flags |= PT_FLAG_SEND_BUFFER; + passthru_iocb->out_dsd.base.addrLow = + cpu_to_le32(LSDW(task_data->req_dma)); + passthru_iocb->out_dsd.base.addrHigh = + cpu_to_le32(MSDW(task_data->req_dma)); + passthru_iocb->out_dsd.count = + cpu_to_le32(task->data_count + + sizeof(struct iscsi_hdr)); + } + if (task_data->resp_len) { + passthru_iocb->in_dsd.base.addrLow = + cpu_to_le32(LSDW(task_data->resp_dma)); + passthru_iocb->in_dsd.base.addrHigh = + cpu_to_le32(MSDW(task_data->resp_dma)); + passthru_iocb->in_dsd.count = + cpu_to_le32(task_data->resp_len); + } + + ctrl_flags |= (PT_FLAG_ISCSI_PDU | PT_FLAG_WAIT_4_RESPONSE); + passthru_iocb->control_flags = cpu_to_le16(ctrl_flags); + + /* Update the request pointer */ + qla4xxx_advance_req_ring_ptr(ha); + wmb(); + + /* Track IOCB used */ + ha->iocb_cnt += task_data->iocb_req_cnt; + ha->req_q_count -= task_data->iocb_req_cnt; + ha->isp_ops->queue_iocb(ha); + ret = QLA_SUCCESS; + +queuing_error: + spin_unlock_irqrestore(&ha->hardware_lock, flags); + return ret; +} |