freebsd-dev/tools/bus_space/C/lang.c
Marcel Moolenaar 015b858345 Rename busdma_sync() to busdma_sync_range() and rename the
base and size parameters to ofs and len (resp). Add a new
busdma_sync() that makes the entire MD coherent.
2015-08-02 01:09:30 +00:00

242 lines
4.6 KiB
C

/*-
* Copyright (c) 2014 Marcel Moolenaar
* 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 ``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 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <errno.h>
#include "bus.h"
#include "busdma.h"
#include "libbus.h"
int16_t
bus_read_1(int rid, long ofs)
{
uint8_t val;
return ((!bs_read(rid, ofs, &val, sizeof(val))) ? -1 : (int)val);
}
int32_t
bus_read_2(int rid, long ofs)
{
uint16_t val;
return ((!bs_read(rid, ofs, &val, sizeof(val))) ? -1 : (int)val);
}
int64_t
bus_read_4(int rid, long ofs)
{
uint32_t val;
return ((!bs_read(rid, ofs, &val, sizeof(val))) ? -1 : (int64_t)val);
}
int
bus_write_1(int rid, long ofs, uint8_t val)
{
return ((!bs_write(rid, ofs, &val, sizeof(val))) ? errno : 0);
}
int
bus_write_2(int rid, long ofs, uint16_t val)
{
return ((!bs_write(rid, ofs, &val, sizeof(val))) ? errno : 0);
}
int
bus_write_4(int rid, long ofs, uint32_t val)
{
return ((!bs_write(rid, ofs, &val, sizeof(val))) ? errno : 0);
}
int
bus_map(const char *dev, const char *resource)
{
return (bs_map(dev, resource));
}
int
bus_unmap(int rid)
{
return ((!bs_unmap(rid)) ? errno : 0);
}
int
bus_subregion(int rid, long ofs, long sz)
{
return (bs_subregion(rid, ofs, sz));
}
int
busdma_tag_create(const char *dev, bus_addr_t align, bus_addr_t bndry,
bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs, bus_size_t maxsegsz,
u_int datarate, u_int flags, busdma_tag_t *out_p)
{
int res;
res = bd_tag_create(dev, align, bndry, maxaddr, maxsz, nsegs, maxsegsz,
datarate, flags);
if (res == -1)
return (errno);
*out_p = res;
return (0);
}
int
busdma_tag_derive(busdma_tag_t tag, bus_addr_t align, bus_addr_t bndry,
bus_addr_t maxaddr, bus_size_t maxsz, u_int nsegs, bus_size_t maxsegsz,
u_int datarate, u_int flags, busdma_tag_t *out_p)
{
int res;
res = bd_tag_derive(tag, align, bndry, maxaddr, maxsz, nsegs, maxsegsz,
datarate, flags);
if (res == -1)
return (errno);
*out_p = res;
return (0);
}
int
busdma_tag_destroy(busdma_tag_t tag)
{
return (bd_tag_destroy(tag));
}
int
busdma_mem_alloc(busdma_tag_t tag, u_int flags, busdma_md_t *out_p)
{
int res;
res = bd_mem_alloc(tag, flags);
if (res == -1)
return (errno);
*out_p = res;
return (0);
}
int
busdma_mem_free(busdma_md_t md)
{
return (bd_mem_free(md));
}
int
busdma_md_create(busdma_tag_t tag, u_int flags, busdma_md_t *out_p)
{
int res;
res = bd_md_create(tag, flags);
if (res == -1)
return (errno);
*out_p = res;
return (0);
}
int
busdma_md_destroy(busdma_md_t md)
{
return (bd_md_destroy(md));
}
int
busdma_md_load(busdma_md_t md, void *buf, size_t len, u_int flags)
{
return (bd_md_load(md, buf, len, flags));
}
int
busdma_md_unload(busdma_md_t md)
{
return (bd_md_unload(md));
}
busdma_seg_t
busdma_md_first_seg(busdma_md_t md, int space)
{
busdma_seg_t seg;
seg = bd_md_first_seg(md, space);
return (seg);
}
busdma_seg_t
busdma_md_next_seg(busdma_md_t md, busdma_seg_t seg)
{
seg = bd_md_next_seg(md, seg);
return (seg);
}
bus_addr_t
busdma_seg_get_addr(busdma_seg_t seg)
{
u_long addr;
int error;
error = bd_seg_get_addr(seg, &addr);
return ((error) ? ~0UL : addr);
}
bus_size_t
busdma_seg_get_size(busdma_seg_t seg)
{
u_long size;
int error;
error = bd_seg_get_size(seg, &size);
return ((error) ? ~0UL : size);
}
int
busdma_sync(busdma_md_t md, int op)
{
return (bd_sync(md, op, 0UL, ~0UL));
}
int
busdma_sync_range(busdma_md_t md, int op, bus_size_t ofs, bus_size_t len)
{
return (bd_sync(md, op, ofs, len));
}