212 lines
5.8 KiB
C
212 lines
5.8 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-4-Clause
|
|
*
|
|
* Copyright (c) 2003
|
|
* Hidetoshi Shimokawa. 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
*
|
|
* This product includes software developed by Hidetoshi Shimokawa.
|
|
*
|
|
* 4. Neither the name of the author nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
*/
|
|
|
|
#ifdef __FreeBSD__
|
|
#include <sys/cdefs.h>
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/types.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
|
|
#include <sys/bus.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/firewire/firewire.h>
|
|
#include <dev/firewire/firewirereg.h>
|
|
#include <dev/firewire/fwdma.h>
|
|
|
|
static void
|
|
fwdma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
|
|
{
|
|
bus_addr_t *baddr;
|
|
|
|
if (error)
|
|
printf("fwdma_map_cb: error=%d\n", error);
|
|
baddr = (bus_addr_t *)arg;
|
|
*baddr = segs->ds_addr;
|
|
}
|
|
|
|
void *
|
|
fwdma_malloc(struct firewire_comm *fc, int alignment, bus_size_t size,
|
|
struct fwdma_alloc *dma, int flag)
|
|
{
|
|
int err;
|
|
|
|
dma->v_addr = NULL;
|
|
err = bus_dma_tag_create(
|
|
/*parent*/ fc->dmat,
|
|
/*alignment*/ alignment,
|
|
/*boundary*/ 0,
|
|
/*lowaddr*/ BUS_SPACE_MAXADDR_32BIT,
|
|
/*highaddr*/ BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
/*maxsize*/ size,
|
|
/*nsegments*/ 1,
|
|
/*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/ BUS_DMA_ALLOCNOW,
|
|
/*lockfunc*/busdma_lock_mutex,
|
|
/*lockarg*/FW_GMTX(fc),
|
|
&dma->dma_tag);
|
|
if (err) {
|
|
printf("fwdma_malloc: failed(1)\n");
|
|
return (NULL);
|
|
}
|
|
|
|
err = bus_dmamem_alloc(dma->dma_tag, &dma->v_addr,
|
|
flag, &dma->dma_map);
|
|
if (err) {
|
|
printf("fwdma_malloc: failed(2)\n");
|
|
/* XXX destroy tag */
|
|
return (NULL);
|
|
}
|
|
|
|
bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->v_addr,
|
|
size, fwdma_map_cb, &dma->bus_addr, /*flags*/0);
|
|
|
|
return (dma->v_addr);
|
|
}
|
|
|
|
void
|
|
fwdma_free(struct firewire_comm *fc, struct fwdma_alloc *dma)
|
|
{
|
|
bus_dmamap_unload(dma->dma_tag, dma->dma_map);
|
|
bus_dmamem_free(dma->dma_tag, dma->v_addr, dma->dma_map);
|
|
bus_dma_tag_destroy(dma->dma_tag);
|
|
}
|
|
|
|
|
|
void *
|
|
fwdma_malloc_size(bus_dma_tag_t dmat, bus_dmamap_t *dmamap,
|
|
bus_size_t size, bus_addr_t *bus_addr, int flag)
|
|
{
|
|
void *v_addr;
|
|
|
|
if (bus_dmamem_alloc(dmat, &v_addr, flag, dmamap)) {
|
|
printf("fwdma_malloc_size: failed(1)\n");
|
|
return (NULL);
|
|
}
|
|
bus_dmamap_load(dmat, *dmamap, v_addr, size,
|
|
fwdma_map_cb, bus_addr, /*flags*/0);
|
|
return (v_addr);
|
|
}
|
|
|
|
void
|
|
fwdma_free_size(bus_dma_tag_t dmat, bus_dmamap_t dmamap,
|
|
void *vaddr, bus_size_t size)
|
|
{
|
|
bus_dmamap_unload(dmat, dmamap);
|
|
bus_dmamem_free(dmat, vaddr, dmamap);
|
|
}
|
|
|
|
/*
|
|
* Allocate multisegment dma buffers
|
|
* each segment size is eqaul to ssize except last segment.
|
|
*/
|
|
struct fwdma_alloc_multi *
|
|
fwdma_malloc_multiseg(struct firewire_comm *fc, int alignment,
|
|
int esize, int n, int flag)
|
|
{
|
|
struct fwdma_alloc_multi *am;
|
|
struct fwdma_seg *seg;
|
|
bus_size_t ssize;
|
|
int nseg;
|
|
|
|
if (esize > PAGE_SIZE) {
|
|
/* round up to PAGE_SIZE */
|
|
esize = ssize = roundup2(esize, PAGE_SIZE);
|
|
nseg = n;
|
|
} else {
|
|
/* allocate PAGE_SIZE segment for small elements */
|
|
ssize = rounddown(PAGE_SIZE, esize);
|
|
nseg = howmany(n, ssize / esize);
|
|
}
|
|
am = (struct fwdma_alloc_multi *)malloc(sizeof(struct fwdma_alloc_multi)
|
|
+ sizeof(struct fwdma_seg)*nseg, M_FW, M_WAITOK);
|
|
am->ssize = ssize;
|
|
am->esize = esize;
|
|
am->nseg = 0;
|
|
if (bus_dma_tag_create(
|
|
/*parent*/ fc->dmat,
|
|
/*alignment*/ alignment,
|
|
/*boundary*/ 0,
|
|
/*lowaddr*/ BUS_SPACE_MAXADDR_32BIT,
|
|
/*highaddr*/ BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
/*maxsize*/ ssize,
|
|
/*nsegments*/ 1,
|
|
/*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/ BUS_DMA_ALLOCNOW,
|
|
/*lockfunc*/busdma_lock_mutex,
|
|
/*lockarg*/FW_GMTX(fc),
|
|
&am->dma_tag)) {
|
|
printf("fwdma_malloc_multiseg: tag_create failed\n");
|
|
free(am, M_FW);
|
|
return (NULL);
|
|
}
|
|
|
|
for (seg = &am->seg[0]; nseg--; seg++) {
|
|
seg->v_addr = fwdma_malloc_size(am->dma_tag, &seg->dma_map,
|
|
ssize, &seg->bus_addr, flag);
|
|
if (seg->v_addr == NULL) {
|
|
printf("fwdma_malloc_multi: malloc_size failed %d\n",
|
|
am->nseg);
|
|
fwdma_free_multiseg(am);
|
|
return (NULL);
|
|
}
|
|
am->nseg++;
|
|
}
|
|
return (am);
|
|
}
|
|
|
|
void
|
|
fwdma_free_multiseg(struct fwdma_alloc_multi *am)
|
|
{
|
|
struct fwdma_seg *seg;
|
|
|
|
for (seg = &am->seg[0]; am->nseg--; seg++) {
|
|
fwdma_free_size(am->dma_tag, seg->dma_map,
|
|
seg->v_addr, am->ssize);
|
|
}
|
|
bus_dma_tag_destroy(am->dma_tag);
|
|
free(am, M_FW);
|
|
}
|