smartpqi_cmd.c

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    1 /*-
    2  * Copyright 2016-2021 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 /* $FreeBSD$ */
   27 
   28 #include "smartpqi_includes.h"
   29 
   30 /*
   31  * Function to submit the request to the adapter.
   32  */
   33 
   34 int
   35 pqisrc_submit_cmnd(pqisrc_softstate_t *softs, ib_queue_t *ib_q, void *req)
   36 {
   37         char *slot = NULL;
   38         uint32_t offset;
   39         iu_header_t *hdr = (iu_header_t *)req;
   40         uint32_t iu_len = hdr->iu_length + 4 ; /* header size */
   41         int i = 0;
   42         DBG_FUNC("IN\n");
   43 
   44         PQI_LOCK(&ib_q->lock);
   45 
   46         /* Check queue full */
   47         if ((ib_q->pi_local + 1) % ib_q->num_elem == *(ib_q->ci_virt_addr)) {
   48                 DBG_WARN("OUT Q full\n");
   49         PQI_UNLOCK(&ib_q->lock);
   50                 return PQI_STATUS_QFULL;
   51         }
   52 
   53         /* Get the slot */
   54         offset = ib_q->pi_local * ib_q->elem_size;
   55         slot = ib_q->array_virt_addr + offset;
   56 
   57         /* Copy the IU */
   58         memcpy(slot, req, iu_len);
   59         DBG_INFO("IU : \n");
   60         for(i = 0; i< iu_len; i++)
   61                 DBG_INFO(" IU [ %d ] : %x\n", i, *((unsigned char *)(slot + i)));
   62 
   63         /* Update the local PI */
   64         ib_q->pi_local = (ib_q->pi_local + 1) % ib_q->num_elem;
   65         DBG_INFO("ib_q->pi_local : %x IU size : %d\n",
   66                          ib_q->pi_local, hdr->iu_length);
   67         DBG_INFO("*ib_q->ci_virt_addr: %x\n",
   68                                 *(ib_q->ci_virt_addr));
   69 
   70         /* Inform the fw about the new IU */
   71         PCI_MEM_PUT32(softs, ib_q->pi_register_abs, ib_q->pi_register_offset, ib_q->pi_local);
   72         PQI_UNLOCK(&ib_q->lock);
   73         DBG_FUNC("OUT\n");
   74         return PQI_STATUS_SUCCESS;
   75 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/smartpqi/smartpqi_cmd.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/smartpqi/smartpqi_cmd.c