freebsd-dev/sys/dev/smartpqi/smartpqi_mem.c
Sean Bruno b17f4335d2 smartpqi(4):
- Update to release "3"

Submitted by:	Deepak Ukey <deepak.ukey@microsemi.com>
Reviewed by:	mav
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D16060
2018-07-11 16:44:14 +00:00

171 lines
4.6 KiB
C

/*-
* Copyright (c) 2018 Microsemi Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $FreeBSD$ */
#include "smartpqi_includes.h"
MALLOC_DEFINE(M_SMARTRAID, "smartraidbuf", "Buffers for the smartraid driver");
/*
* DMA map load callback function
*/
static void
os_dma_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
bus_addr_t *paddr = (bus_addr_t *)arg;
*paddr = segs[0].ds_addr;
}
/*
* DMA mem resource allocation wrapper function
*/
int os_dma_mem_alloc(pqisrc_softstate_t *softs, struct dma_mem *dma_mem)
{
int ret = 0;
/* DBG_FUNC("IN\n"); */
/* DMA memory needed - allocate it */
if ((ret = bus_dma_tag_create(
softs->os_specific.pqi_parent_dmat, /* parent */
dma_mem->align, 0, /* algnmnt, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
dma_mem->size, /* maxsize */
1, /* nsegments */
dma_mem->size, /* maxsegsize */
0, /* flags */
NULL, NULL, /* No locking needed */
&dma_mem->dma_tag)) != 0 ) {
DBG_ERR("can't allocate DMA tag with error = 0x%x\n", ret);
goto err_out;
}
if ((ret = bus_dmamem_alloc(dma_mem->dma_tag, (void **)&dma_mem->virt_addr,
BUS_DMA_NOWAIT, &dma_mem->dma_map)) != 0) {
DBG_ERR("can't allocate DMA memory for required object \
with error = 0x%x\n", ret);
goto err_mem;
}
if((ret = bus_dmamap_load(dma_mem->dma_tag, dma_mem->dma_map,
dma_mem->virt_addr, dma_mem->size,
os_dma_map, &dma_mem->dma_addr, 0)) != 0) {
DBG_ERR("can't load DMA memory for required \
object with error = 0x%x\n", ret);
goto err_load;
}
memset(dma_mem->virt_addr, 0, dma_mem->size);
/* DBG_FUNC("OUT\n"); */
return ret;
err_load:
if(dma_mem->virt_addr)
bus_dmamem_free(dma_mem->dma_tag, dma_mem->virt_addr,
dma_mem->dma_map);
err_mem:
if(dma_mem->dma_tag)
bus_dma_tag_destroy(dma_mem->dma_tag);
err_out:
DBG_FUNC("failed OUT\n");
return ret;
}
/*
* DMA mem resource deallocation wrapper function
*/
void os_dma_mem_free(pqisrc_softstate_t *softs, struct dma_mem *dma_mem)
{
/* DBG_FUNC("IN\n"); */
if(dma_mem->dma_addr) {
bus_dmamap_unload(dma_mem->dma_tag, dma_mem->dma_map);
dma_mem->dma_addr = 0;
}
if(dma_mem->virt_addr) {
bus_dmamem_free(dma_mem->dma_tag, dma_mem->virt_addr,
dma_mem->dma_map);
dma_mem->virt_addr = NULL;
}
if(dma_mem->dma_tag) {
bus_dma_tag_destroy(dma_mem->dma_tag);
dma_mem->dma_tag = NULL;
}
/* DBG_FUNC("OUT\n"); */
}
/*
* Mem resource allocation wrapper function
*/
void *os_mem_alloc(pqisrc_softstate_t *softs, size_t size)
{
void *addr = NULL;
/* DBG_FUNC("IN\n"); */
addr = malloc((unsigned long)size, M_SMARTRAID,
M_NOWAIT | M_ZERO);
/* DBG_FUNC("OUT\n"); */
return addr;
}
/*
* Mem resource deallocation wrapper function
*/
void os_mem_free(pqisrc_softstate_t *softs,
char *addr, size_t size)
{
/* DBG_FUNC("IN\n"); */
free((void*)addr, M_SMARTRAID);
/* DBG_FUNC("OUT\n"); */
}
/*
* dma/bus resource deallocation wrapper function
*/
void os_resource_free(pqisrc_softstate_t *softs)
{
if(softs->os_specific.pqi_parent_dmat)
bus_dma_tag_destroy(softs->os_specific.pqi_parent_dmat);
if (softs->os_specific.pqi_regs_res0 != NULL)
bus_release_resource(softs->os_specific.pqi_dev,
SYS_RES_MEMORY,
softs->os_specific.pqi_regs_rid0,
softs->os_specific.pqi_regs_res0);
}