16 qla4xxx_space_in_req_ring(struct scsi_qla_host *ha, uint16_t req_cnt)  in qla4xxx_space_in_req_ring()  argument
21 	if ((req_cnt + 2) >= ha->req_q_count) {  in qla4xxx_space_in_req_ring()
22 		cnt = (uint16_t) ha->isp_ops->rd_shdw_req_q_out(ha);  in qla4xxx_space_in_req_ring()
23 		if (ha->request_in < cnt)  in qla4xxx_space_in_req_ring()
24 			ha->req_q_count = cnt - ha->request_in;  in qla4xxx_space_in_req_ring()
26 			ha->req_q_count = REQUEST_QUEUE_DEPTH -  in qla4xxx_space_in_req_ring()
27 						(ha->request_in - cnt);  in qla4xxx_space_in_req_ring()
31 	if ((req_cnt + 2) < ha->req_q_count)  in qla4xxx_space_in_req_ring()
37 static void qla4xxx_advance_req_ring_ptr(struct scsi_qla_host *ha)  in qla4xxx_advance_req_ring_ptr()  argument
40 	if (ha->request_in == (REQUEST_QUEUE_DEPTH - 1)) {  in qla4xxx_advance_req_ring_ptr()
41 		ha->request_in = 0;  in qla4xxx_advance_req_ring_ptr()
42 		ha->request_ptr = ha->request_ring;  in qla4xxx_advance_req_ring_ptr()
44 		ha->request_in++;  in qla4xxx_advance_req_ring_ptr()
45 		ha->request_ptr++;  in qla4xxx_advance_req_ring_ptr()
59 static int qla4xxx_get_req_pkt(struct scsi_qla_host *ha,  in qla4xxx_get_req_pkt()  argument
64 	if (qla4xxx_space_in_req_ring(ha, req_cnt)) {  in qla4xxx_get_req_pkt()
65 		*queue_entry = ha->request_ptr;  in qla4xxx_get_req_pkt()
68 		qla4xxx_advance_req_ring_ptr(ha);  in qla4xxx_get_req_pkt()
69 		ha->req_q_count -= req_cnt;  in qla4xxx_get_req_pkt()
85 int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,  in qla4xxx_send_marker_iocb()  argument
93 	spin_lock_irqsave(&ha->hardware_lock, flags);  in qla4xxx_send_marker_iocb()
96 	if (qla4xxx_get_req_pkt(ha, (struct queue_entry **) &marker_entry) !=  in qla4xxx_send_marker_iocb()
111 	ha->isp_ops->queue_iocb(ha);  in qla4xxx_send_marker_iocb()
114 	spin_unlock_irqrestore(&ha->hardware_lock, flags);  in qla4xxx_send_marker_iocb()
119 qla4xxx_alloc_cont_entry(struct scsi_qla_host *ha)  in qla4xxx_alloc_cont_entry()  argument
123 	cont_entry = (struct continuation_t1_entry *)ha->request_ptr;  in qla4xxx_alloc_cont_entry()
125 	qla4xxx_advance_req_ring_ptr(ha);  in qla4xxx_alloc_cont_entry()
130 	cont_entry->hdr.systemDefined = (uint8_t) cpu_to_le16(ha->request_in);  in qla4xxx_alloc_cont_entry()
152 	struct scsi_qla_host *ha;  in qla4xxx_build_scsi_iocbs()  local
160 	ha = srb->ha;  in qla4xxx_build_scsi_iocbs()
178 			cont_entry = qla4xxx_alloc_cont_entry(ha);  in qla4xxx_build_scsi_iocbs()
195 void qla4_83xx_queue_iocb(struct scsi_qla_host *ha)  in qla4_83xx_queue_iocb()  argument
197 	writel(ha->request_in, &ha->qla4_83xx_reg->req_q_in);  in qla4_83xx_queue_iocb()
198 	readl(&ha->qla4_83xx_reg->req_q_in);  in qla4_83xx_queue_iocb()
201 void qla4_83xx_complete_iocb(struct scsi_qla_host *ha)  in qla4_83xx_complete_iocb()  argument
203 	writel(ha->response_out, &ha->qla4_83xx_reg->rsp_q_out);  in qla4_83xx_complete_iocb()
204 	readl(&ha->qla4_83xx_reg->rsp_q_out);  in qla4_83xx_complete_iocb()
214 void qla4_82xx_queue_iocb(struct scsi_qla_host *ha)  in qla4_82xx_queue_iocb()  argument
218 	dbval = 0x14 | (ha->func_num << 5);  in qla4_82xx_queue_iocb()
219 	dbval = dbval | (0 << 8) | (ha->request_in << 16);  in qla4_82xx_queue_iocb()
221 	qla4_82xx_wr_32(ha, ha->nx_db_wr_ptr, ha->request_in);  in qla4_82xx_queue_iocb()
232 void qla4_82xx_complete_iocb(struct scsi_qla_host *ha)  in qla4_82xx_complete_iocb()  argument
234 	writel(ha->response_out, &ha->qla4_82xx_reg->rsp_q_out);  in qla4_82xx_complete_iocb()
235 	readl(&ha->qla4_82xx_reg->rsp_q_out);  in qla4_82xx_complete_iocb()
245 void qla4xxx_queue_iocb(struct scsi_qla_host *ha)  in qla4xxx_queue_iocb()  argument
247 	writel(ha->request_in, &ha->reg->req_q_in);  in qla4xxx_queue_iocb()
248 	readl(&ha->reg->req_q_in);  in qla4xxx_queue_iocb()
259 void qla4xxx_complete_iocb(struct scsi_qla_host *ha)  in qla4xxx_complete_iocb()  argument
261 	writel(ha->response_out, &ha->reg->rsp_q_out);  in qla4xxx_complete_iocb()
262 	readl(&ha->reg->rsp_q_out);  in qla4xxx_complete_iocb()
273 int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb)  in qla4xxx_send_command_to_isp()  argument
290 	spin_lock_irqsave(&ha->hardware_lock, flags);  in qla4xxx_send_command_to_isp()
300 	if (!test_bit(AF_ONLINE, &ha->flags)) {  in qla4xxx_send_command_to_isp()
303 			      ha->host_no, __func__));  in qla4xxx_send_command_to_isp()
314 	if (!qla4xxx_space_in_req_ring(ha, req_cnt))  in qla4xxx_send_command_to_isp()
318 	if ((ha->iocb_cnt + req_cnt) >= ha->iocb_hiwat)  in qla4xxx_send_command_to_isp()
322 	cmd_entry = (struct command_t3_entry *) ha->request_ptr;  in qla4xxx_send_command_to_isp()
345 		ha->bytes_xfered += scsi_bufflen(cmd);  in qla4xxx_send_command_to_isp()
346 		if (ha->bytes_xfered & ~0xFFFFF){  in qla4xxx_send_command_to_isp()
347 			ha->total_mbytes_xferred += ha->bytes_xfered >> 20;  in qla4xxx_send_command_to_isp()
348 			ha->bytes_xfered &= 0xFFFFF;  in qla4xxx_send_command_to_isp()
355 	qla4xxx_advance_req_ring_ptr(ha);  in qla4xxx_send_command_to_isp()
366 	ha->iocb_cnt += req_cnt;  in qla4xxx_send_command_to_isp()
368 	ha->req_q_count -= req_cnt;  in qla4xxx_send_command_to_isp()
370 	ha->isp_ops->queue_iocb(ha);  in qla4xxx_send_command_to_isp()
371 	spin_unlock_irqrestore(&ha->hardware_lock, flags);  in qla4xxx_send_command_to_isp()
379 	spin_unlock_irqrestore(&ha->hardware_lock, flags);  in qla4xxx_send_command_to_isp()
389 	struct scsi_qla_host *ha = ddb_entry->ha;  in qla4xxx_send_passthru0()  local
395 	spin_lock_irqsave(&ha->hardware_lock, flags);  in qla4xxx_send_passthru0()
398 	if (!qla4xxx_space_in_req_ring(ha, task_data->iocb_req_cnt))  in qla4xxx_send_passthru0()
401 	passthru_iocb = (struct passthru0 *) ha->request_ptr;  in qla4xxx_send_passthru0()
437 	qla4xxx_advance_req_ring_ptr(ha);  in qla4xxx_send_passthru0()
441 	ha->iocb_cnt += task_data->iocb_req_cnt;  in qla4xxx_send_passthru0()
442 	ha->req_q_count -= task_data->iocb_req_cnt;  in qla4xxx_send_passthru0()
443 	ha->isp_ops->queue_iocb(ha);  in qla4xxx_send_passthru0()
447 	spin_unlock_irqrestore(&ha->hardware_lock, flags);  in qla4xxx_send_passthru0()
451 static struct mrb *qla4xxx_get_new_mrb(struct scsi_qla_host *ha)  in qla4xxx_get_new_mrb()  argument
459 	mrb->ha = ha;  in qla4xxx_get_new_mrb()
463 static int qla4xxx_send_mbox_iocb(struct scsi_qla_host *ha, struct mrb *mrb,  in qla4xxx_send_mbox_iocb()  argument
472 	spin_lock_irqsave(&ha->hardware_lock, flags);  in qla4xxx_send_mbox_iocb()
475 	rval = qla4xxx_get_req_pkt(ha, (struct queue_entry **) &(mrb->mbox));  in qla4xxx_send_mbox_iocb()
479 	index = ha->mrb_index;  in qla4xxx_send_mbox_iocb()
485 		if (ha->active_mrb_array[index] == NULL) {  in qla4xxx_send_mbox_iocb()
486 			ha->mrb_index = index;  in qla4xxx_send_mbox_iocb()
492 	ha->active_mrb_array[index] = mrb;  in qla4xxx_send_mbox_iocb()
500 	ha->iocb_cnt += mrb->iocb_cnt;  in qla4xxx_send_mbox_iocb()
501 	ha->isp_ops->queue_iocb(ha);  in qla4xxx_send_mbox_iocb()
503 	spin_unlock_irqrestore(&ha->hardware_lock, flags);  in qla4xxx_send_mbox_iocb()
507 int qla4xxx_ping_iocb(struct scsi_qla_host *ha, uint32_t options,  in qla4xxx_ping_iocb()  argument
516 	mrb = qla4xxx_get_new_mrb(ha);  in qla4xxx_ping_iocb()
518 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: fail to get new mrb\n",  in qla4xxx_ping_iocb()
533 	rval = qla4xxx_send_mbox_iocb(ha, mrb, in_mbox);  in qla4xxx_ping_iocb()