2 * Copyright (c) 2018 Microsemi Corporation.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include "smartpqi_includes.h"
32 * Function to submit the request to the adapter.
35 int pqisrc_submit_cmnd(pqisrc_softstate_t *softs,
36 ib_queue_t *ib_q, void *req)
40 iu_header_t *hdr = (iu_header_t *)req;
41 uint32_t iu_len = hdr->iu_length + 4 ; /* header size */
45 PQI_LOCK(&ib_q->lock);
47 /* Check queue full */
48 if ((ib_q->pi_local + 1) % ib_q->num_elem == *(ib_q->ci_virt_addr)) {
49 DBG_WARN("OUT Q full\n");
50 PQI_UNLOCK(&ib_q->lock);
51 return PQI_STATUS_QFULL;
55 offset = ib_q->pi_local * ib_q->elem_size;
56 slot = ib_q->array_virt_addr + offset;
59 memcpy(slot, req, iu_len);
61 for(i = 0; i< iu_len; i++)
62 DBG_INFO(" IU [ %d ] : %x\n", i, *((unsigned char *)(slot + i)));
64 /* Update the local PI */
65 ib_q->pi_local = (ib_q->pi_local + 1) % ib_q->num_elem;
66 DBG_INFO("ib_q->pi_local : %x IU size : %d\n",
67 ib_q->pi_local, hdr->iu_length);
68 DBG_INFO("*ib_q->ci_virt_addr: %x\n",
69 *(ib_q->ci_virt_addr));
71 /* Inform the fw about the new IU */
72 PCI_MEM_PUT32(softs, ib_q->pi_register_abs, ib_q->pi_register_offset, ib_q->pi_local);
73 PQI_UNLOCK(&ib_q->lock);
75 return PQI_STATUS_SUCCESS;