NetBSD-5.0.2/sys/arch/hpcsh/hpcsh/bus_space.c
/* $NetBSD: bus_space.c,v 1.15 2008/04/28 20:23:22 martin Exp $ */
/*-
* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bus_space.c,v 1.15 2008/04/28 20:23:22 martin Exp $");
#include "debug_hpcsh.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/extent.h>
#include <machine/bus.h>
/* bus.h turn on BUS_SPACE_DEBUG if the global DEBUG option is enabled. */
#ifdef BUS_SPACE_DEBUG
#define DPRINTF_ENABLE
#define DPRINTF_DEBUG bus_space_debug
#endif
#include <machine/debug.h>
#define _BUS_SPACE_ACCESS_HOOK() ((void)0)
_BUS_SPACE_READ(_bus_space, 1, 8)
_BUS_SPACE_READ(_bus_space, 2, 16)
_BUS_SPACE_READ(_bus_space, 4, 32)
_BUS_SPACE_READ(_bus_space, 8, 64)
_BUS_SPACE_READ_MULTI(_bus_space, 1, 8)
_BUS_SPACE_READ_MULTI(_bus_space, 2, 16)
_BUS_SPACE_READ_MULTI(_bus_space, 4, 32)
_BUS_SPACE_READ_MULTI(_bus_space, 8, 64)
_BUS_SPACE_READ_REGION(_bus_space, 1, 8)
_BUS_SPACE_READ_REGION(_bus_space, 2, 16)
_BUS_SPACE_READ_REGION(_bus_space, 4, 32)
_BUS_SPACE_READ_REGION(_bus_space, 8, 64)
_BUS_SPACE_WRITE(_bus_space, 1, 8)
_BUS_SPACE_WRITE(_bus_space, 2, 16)
_BUS_SPACE_WRITE(_bus_space, 4, 32)
_BUS_SPACE_WRITE(_bus_space, 8, 64)
_BUS_SPACE_WRITE_MULTI(_bus_space, 1, 8)
_BUS_SPACE_WRITE_MULTI(_bus_space, 2, 16)
_BUS_SPACE_WRITE_MULTI(_bus_space, 4, 32)
_BUS_SPACE_WRITE_MULTI(_bus_space, 8, 64)
_BUS_SPACE_WRITE_REGION(_bus_space, 1, 8)
_BUS_SPACE_WRITE_REGION(_bus_space, 2, 16)
_BUS_SPACE_WRITE_REGION(_bus_space, 4, 32)
_BUS_SPACE_WRITE_REGION(_bus_space, 8, 64)
_BUS_SPACE_SET_MULTI(_bus_space, 1, 8)
_BUS_SPACE_SET_MULTI(_bus_space, 2, 16)
_BUS_SPACE_SET_MULTI(_bus_space, 4, 32)
_BUS_SPACE_SET_MULTI(_bus_space, 8, 64)
_BUS_SPACE_COPY_REGION(_bus_space, 1, 8)
_BUS_SPACE_COPY_REGION(_bus_space, 2, 16)
_BUS_SPACE_COPY_REGION(_bus_space, 4, 32)
_BUS_SPACE_COPY_REGION(_bus_space, 8, 64)
#undef _BUS_SPACE_ACCESS_HOOK
static int _bus_space_map(void *, bus_addr_t, bus_size_t, int,
bus_space_handle_t *);
static void _bus_space_unmap(void *, bus_space_handle_t, bus_size_t);
static int _bus_space_subregion(void *, bus_space_handle_t, bus_size_t,
bus_size_t, bus_space_handle_t *);
static int _bus_space_alloc(void *, bus_addr_t, bus_addr_t, bus_size_t,
bus_size_t, bus_size_t, int,
bus_addr_t *, bus_space_handle_t *);
static void _bus_space_free(void *, bus_space_handle_t, bus_size_t);
static void *_bus_space_vaddr(void *, bus_space_handle_t);
static struct hpcsh_bus_space __default_bus_space = {
.hbs_extent = NULL,
.hbs_map = _bus_space_map,
.hbs_unmap = _bus_space_unmap,
.hbs_subregion = _bus_space_subregion,
.hbs_alloc = _bus_space_alloc,
.hbs_free = _bus_space_free,
.hbs_vaddr = _bus_space_vaddr,
.hbs_r_1 = _bus_space_read_1,
.hbs_r_2 = _bus_space_read_2,
.hbs_r_4 = _bus_space_read_4,
.hbs_r_8 = _bus_space_read_8,
.hbs_rm_1 = _bus_space_read_multi_1,
.hbs_rm_2 = _bus_space_read_multi_2,
.hbs_rm_4 = _bus_space_read_multi_4,
.hbs_rm_8 = _bus_space_read_multi_8,
.hbs_rr_1 = _bus_space_read_region_1,
.hbs_rr_2 = _bus_space_read_region_2,
.hbs_rr_4 = _bus_space_read_region_4,
.hbs_rr_8 = _bus_space_read_region_8,
.hbs_w_1 = _bus_space_write_1,
.hbs_w_2 = _bus_space_write_2,
.hbs_w_4 = _bus_space_write_4,
.hbs_w_8 = _bus_space_write_8,
.hbs_wm_1 = _bus_space_write_multi_1,
.hbs_wm_2 = _bus_space_write_multi_2,
.hbs_wm_4 = _bus_space_write_multi_4,
.hbs_wm_8 = _bus_space_write_multi_8,
.hbs_wr_1 = _bus_space_write_region_1,
.hbs_wr_2 = _bus_space_write_region_2,
.hbs_wr_4 = _bus_space_write_region_4,
.hbs_wr_8 = _bus_space_write_region_8,
.hbs_sm_1 = _bus_space_set_multi_1,
.hbs_sm_2 = _bus_space_set_multi_2,
.hbs_sm_4 = _bus_space_set_multi_4,
.hbs_sm_8 = _bus_space_set_multi_8,
.hbs_c_1 = _bus_space_copy_region_1,
.hbs_c_2 = _bus_space_copy_region_2,
.hbs_c_4 = _bus_space_copy_region_4,
.hbs_c_8 = _bus_space_copy_region_8
};
/* create default bus_space_tag */
bus_space_tag_t
bus_space_create(struct hpcsh_bus_space *hbs, const char *name,
bus_addr_t addr, bus_size_t size)
{
if (hbs == NULL)
hbs = malloc(sizeof(*hbs), M_DEVBUF, M_NOWAIT);
KASSERT(hbs);
memset(hbs, 0, sizeof(*hbs));
/* set default method */
*hbs = __default_bus_space;
hbs->hbs_cookie = hbs;
/* set access region */
if (size == 0) {
hbs->hbs_base_addr = addr; /* no extent */
} else {
hbs->hbs_extent = extent_create(name, addr, addr + size - 1,
M_DEVBUF, 0, 0, EX_NOWAIT);
if (hbs->hbs_extent == NULL) {
panic("%s:: unable to create bus_space for "
"0x%08lx-%#lx", __func__, addr, size);
}
}
return hbs;
}
void
bus_space_destroy(bus_space_tag_t t)
{
struct hpcsh_bus_space *hbs = t;
struct extent *ex = hbs->hbs_extent;
if (ex != NULL)
extent_destroy(ex);
free(t, M_DEVBUF);
}
/* default bus_space tag */
static int
_bus_space_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
struct hpcsh_bus_space *hbs = t;
struct extent *ex = hbs->hbs_extent;
int error;
if (ex == NULL) {
*bshp = (bus_space_handle_t)(bpa + hbs->hbs_base_addr);
return (0);
}
bpa += ex->ex_start;
error = extent_alloc_region(ex, bpa, size, EX_NOWAIT | EX_MALLOCOK);
if (error) {
DPRINTF("failed.\n");
return (error);
}
*bshp = (bus_space_handle_t)bpa;
return (0);
}
static int
_bus_space_subregion(void *t, bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size,
bus_space_handle_t *nbshp)
{
*nbshp = bsh + offset;
return (0);
}
static int
_bus_space_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
bus_size_t size, bus_size_t alignment, bus_size_t boundary,
int flags, bus_addr_t *bpap, bus_space_handle_t *bshp)
{
struct hpcsh_bus_space *hbs = t;
struct extent *ex = hbs->hbs_extent;
u_long bpa, base;
int error;
if (ex == NULL) {
*bshp = *bpap = rstart + hbs->hbs_base_addr;
return (0);
}
base = ex->ex_start;
error = extent_alloc_subregion(ex, rstart + base, rend + base, size,
alignment, boundary,
EX_FAST | EX_NOWAIT | EX_MALLOCOK,
&bpa);
if (error) {
DPRINTF("failed. base=0x%08x rstart=0x%08x, rend=0x%08x"
" size=0x%08x\n", (uint32_t)base, (uint32_t)rstart,
(uint32_t)rend, (uint32_t)size);
return (error);
}
*bshp = (bus_space_handle_t)bpa;
if (bpap != NULL)
*bpap = bpa;
return (0);
}
static void
_bus_space_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
struct hpcsh_bus_space *hbs = t;
struct extent *ex = hbs->hbs_extent;
if (ex != NULL)
_bus_space_unmap(t, bsh, size);
}
static void
_bus_space_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
{
struct hpcsh_bus_space *hbs = t;
struct extent *ex = hbs->hbs_extent;
int error;
if (ex == NULL)
return;
error = extent_free(ex, bsh, size, EX_NOWAIT);
if (error) {
DPRINTF("%#lx-%#lx of %s space lost\n", bsh, bsh + size,
ex->ex_name);
}
}
void *
_bus_space_vaddr(void *t, bus_space_handle_t h)
{
return (void *)h;
}