+ hptiop_drain_outbound_queue_itl(hba);
+ ret = 1;
+ }
+
+ return ret;
+}
+
+static u64 mv_outbound_read(struct hpt_iopmu_mv __iomem *mu)
+{
+ u32 outbound_tail = readl(&mu->outbound_tail);
+ u32 outbound_head = readl(&mu->outbound_head);
+
+ if (outbound_tail != outbound_head) {
+ u64 p;
+
+ memcpy_fromio(&p, &mu->outbound_q[mu->outbound_tail], 8);
+ outbound_tail++;
+
+ if (outbound_tail == MVIOP_QUEUE_LEN)
+ outbound_tail = 0;
+ writel(outbound_tail, &mu->outbound_tail);
+ return p;
+ } else
+ return 0;
+}
+
+static void mv_inbound_write(u64 p, struct hptiop_hba *hba)
+{
+ u32 inbound_head = readl(&hba->u.mv.mu->inbound_head);
+ u32 head = inbound_head + 1;
+
+ if (head == MVIOP_QUEUE_LEN)
+ head = 0;
+
+ memcpy_toio(&hba->u.mv.mu->inbound_q[inbound_head], &p, 8);
+ writel(head, &hba->u.mv.mu->inbound_head);
+ writel(MVIOP_MU_INBOUND_INT_POSTQUEUE,
+ &hba->u.mv.regs->inbound_doorbell);
+}
+
+static void hptiop_request_callback_mv(struct hptiop_hba *hba, u64 tag)
+{
+ u32 req_type = (tag >> 5) & 0x7;
+ struct hpt_iop_request_scsi_command *req;
+
+ dprintk("hptiop_request_callback_mv: tag=%llx\n", tag);
+
+ BUG_ON((tag & MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT) == 0);
+
+ switch (req_type) {
+ case IOP_REQUEST_TYPE_GET_CONFIG:
+ case IOP_REQUEST_TYPE_SET_CONFIG:
+ hba->msg_done = 1;
+ break;
+
+ case IOP_REQUEST_TYPE_SCSI_COMMAND:
+ req = hba->reqs[tag >> 8].req_virt;
+ if (likely(tag & MVIOP_MU_QUEUE_REQUEST_RESULT_BIT))
+ req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
+
+ hptiop_finish_scsi_req(hba, tag>>8, req);
+ break;
+
+ default:
+ break;
+ }
+}
+
+static int iop_intr_mv(struct hptiop_hba *hba)
+{
+ u32 status;
+ int ret = 0;
+
+ status = readl(&hba->u.mv.regs->outbound_doorbell);
+ writel(~status, &hba->u.mv.regs->outbound_doorbell);
+
+ if (status & MVIOP_MU_OUTBOUND_INT_MSG) {
+ u32 msg;
+ msg = readl(&hba->u.mv.mu->outbound_msg);
+ dprintk("received outbound msg %x\n", msg);
+ hptiop_message_callback(hba, msg);
+ ret = 1;
+ }
+
+ if (status & MVIOP_MU_OUTBOUND_INT_POSTQUEUE) {
+ u64 tag;
+
+ while ((tag = mv_outbound_read(hba->u.mv.mu)))
+ hptiop_request_callback_mv(hba, tag);