mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
struct fwdma_alloc {
|
|
bus_dma_tag_t dma_tag;
|
|
bus_dmamap_t dma_map;
|
|
void * v_addr;
|
|
bus_addr_t bus_addr;
|
|
};
|
|
|
|
struct fwdma_seg {
|
|
bus_dmamap_t dma_map;
|
|
void * v_addr;
|
|
bus_addr_t bus_addr;
|
|
};
|
|
|
|
struct fwdma_alloc_multi {
|
|
bus_size_t ssize;
|
|
bus_size_t esize;
|
|
int nseg;
|
|
bus_dma_tag_t dma_tag;
|
|
struct fwdma_seg seg[0];
|
|
};
|
|
|
|
static __inline void *
|
|
fwdma_v_addr(struct fwdma_alloc_multi *am, int index)
|
|
{
|
|
bus_size_t ssize = am->ssize;
|
|
int offset = am->esize * index;
|
|
|
|
return ((caddr_t)am->seg[offset / ssize].v_addr + (offset % ssize));
|
|
}
|
|
|
|
static __inline bus_addr_t
|
|
fwdma_bus_addr(struct fwdma_alloc_multi *am, int index)
|
|
{
|
|
bus_size_t ssize = am->ssize;
|
|
int offset = am->esize * index;
|
|
|
|
return (am->seg[offset / ssize].bus_addr + (offset % ssize));
|
|
}
|
|
|
|
static __inline void
|
|
fwdma_sync(struct fwdma_alloc *dma, bus_dmasync_op_t op)
|
|
{
|
|
bus_dmamap_sync(dma->dma_tag, dma->dma_map, op);
|
|
}
|
|
|
|
static __inline void
|
|
fwdma_sync_multiseg(struct fwdma_alloc_multi *am,
|
|
int start, int end, bus_dmasync_op_t op)
|
|
{
|
|
struct fwdma_seg *seg, *eseg;
|
|
|
|
seg = &am->seg[am->esize * start / am->ssize];
|
|
eseg = &am->seg[am->esize * end / am->ssize];
|
|
for (; seg <= eseg; seg ++)
|
|
bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
|
|
}
|
|
|
|
static __inline void
|
|
fwdma_sync_multiseg_all(struct fwdma_alloc_multi *am, bus_dmasync_op_t op)
|
|
{
|
|
struct fwdma_seg *seg;
|
|
int i;
|
|
|
|
seg = &am->seg[0];
|
|
for (i = 0; i < am->nseg; i++, seg++)
|
|
bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
|
|
}
|
|
|
|
void *fwdma_malloc(struct firewire_comm *, int, bus_size_t, struct fwdma_alloc *, int);
|
|
void fwdma_free(struct firewire_comm *, struct fwdma_alloc *);
|
|
void *fwdma_malloc_size(bus_dma_tag_t, bus_dmamap_t *, bus_size_t, bus_addr_t *, int);
|
|
void fwdma_free_size(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t);
|
|
struct fwdma_alloc_multi *fwdma_malloc_multiseg(struct firewire_comm *,
|
|
int, int, int, int);
|
|
void fwdma_free_multiseg(struct fwdma_alloc_multi *);
|
|
|