1 /*-
2 * Copyright 2016-2023 Microchip Technology, Inc. and/or its subsidiaries.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26
27 #include "smartpqi_includes.h"
28
29 /*
30 * Function to submit the request to the adapter.
31 */
32
33 int
pqisrc_submit_cmnd(pqisrc_softstate_t * softs,ib_queue_t * ib_q,void * req)34 pqisrc_submit_cmnd(pqisrc_softstate_t *softs, ib_queue_t *ib_q, void *req)
35 {
36 char *slot = NULL;
37 uint32_t offset;
38 iu_header_t *hdr = (iu_header_t *)req;
39 /*TODO : Can be fixed a size copying of IU ? */
40 uint32_t iu_len = hdr->iu_length + 4 ; /* header size */
41 int i = 0;
42 DBG_FUNC("IN\n");
43
44 /* The code below assumes we only take 1 element (no spanning) */
45 ASSERT(iu_len <= ib_q->elem_size);
46
47 PQI_LOCK(&ib_q->lock);
48
49 /* Check queue full */
50 if ((ib_q->pi_local + 1) % ib_q->num_elem == *(ib_q->ci_virt_addr)) {
51 DBG_WARN("OUT Q full\n");
52 PQI_UNLOCK(&ib_q->lock);
53 return PQI_STATUS_QFULL;
54 }
55
56 /* Get the slot */
57 offset = ib_q->pi_local * ib_q->elem_size;
58 slot = ib_q->array_virt_addr + offset;
59
60 /* Copy the IU */
61 memcpy(slot, req, iu_len);
62 DBG_IO("IU : \n");
63 for(i = 0; i< iu_len; i++)
64 DBG_IO(" IU [ %d ] : %x\n", i, *((unsigned char *)(slot + i)));
65
66 /* Update the local PI */
67 ib_q->pi_local = (ib_q->pi_local + 1) % ib_q->num_elem;
68 DBG_IO("ib_q->pi_local : %x IU size : %d\n",
69 ib_q->pi_local, hdr->iu_length);
70 DBG_IO("*ib_q->ci_virt_addr: %x\n",
71 *(ib_q->ci_virt_addr));
72
73 /* Inform the fw about the new IU */
74 PCI_MEM_PUT32(softs, ib_q->pi_register_abs, ib_q->pi_register_offset, ib_q->pi_local);
75 PQI_UNLOCK(&ib_q->lock);
76 DBG_FUNC("OUT\n");
77 return PQI_STATUS_SUCCESS;
78 }
79