/
bus_space.c
1506 lines (1329 loc) · 37.7 KB
/
bus_space.c
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/* $OpenBSD: bus_space.c,v 1.26 2015/04/25 21:31:24 guenther Exp $ */
/* $NetBSD: bus_space.c,v 1.2 2003/03/14 18:47:53 christos Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center.
*
* 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/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/extent.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <dev/isa/isareg.h>
#include <machine/isa_machdep.h>
/*
* Extent maps to manage I/O and memory space. Allocate
* storage for 16 regions in each, initially. Later, ioport_malloc_safe
* will indicate that it's safe to use malloc() to dynamically allocate
* region descriptors.
*
* N.B. At least two regions are _always_ allocated from the iomem
* extent map; (0 -> ISA hole) and (end of ISA hole -> end of RAM).
*
* The extent maps are not static! Machine-dependent ISA and EISA
* routines need access to them for bus address space allocation.
*/
static long ioport_ex_storage[EXTENT_FIXED_STORAGE_SIZE(16) / sizeof(long)];
static long iomem_ex_storage[EXTENT_FIXED_STORAGE_SIZE(16) / sizeof(long)];
struct extent *ioport_ex;
struct extent *iomem_ex;
static int ioport_malloc_safe;
int x86_mem_add_mapping(bus_addr_t, bus_size_t,
int, bus_space_handle_t *);
u_int8_t x86_bus_space_io_read_1(bus_space_handle_t, bus_size_t);
u_int16_t x86_bus_space_io_read_2(bus_space_handle_t, bus_size_t);
u_int32_t x86_bus_space_io_read_4(bus_space_handle_t, bus_size_t);
u_int64_t x86_bus_space_io_read_8(bus_space_handle_t, bus_size_t);
void x86_bus_space_io_read_multi_1(bus_space_handle_t, bus_size_t,
u_int8_t *, bus_size_t);
void x86_bus_space_io_read_multi_2(bus_space_handle_t, bus_size_t,
u_int16_t *, bus_size_t);
void x86_bus_space_io_read_multi_4(bus_space_handle_t, bus_size_t,
u_int32_t *, bus_size_t);
void x86_bus_space_io_read_multi_8(bus_space_handle_t, bus_size_t,
u_int64_t *, bus_size_t);
void x86_bus_space_io_read_region_1(bus_space_handle_t, bus_size_t,
u_int8_t *, bus_size_t);
void x86_bus_space_io_read_region_2(bus_space_handle_t, bus_size_t,
u_int16_t *, bus_size_t);
void x86_bus_space_io_read_region_4(bus_space_handle_t, bus_size_t,
u_int32_t *, bus_size_t);
void x86_bus_space_io_read_region_8(bus_space_handle_t, bus_size_t,
u_int64_t *, bus_size_t);
void x86_bus_space_io_write_1(bus_space_handle_t, bus_size_t,
u_int8_t);
void x86_bus_space_io_write_2(bus_space_handle_t, bus_size_t,
u_int16_t);
void x86_bus_space_io_write_4(bus_space_handle_t, bus_size_t,
u_int32_t);
void x86_bus_space_io_write_8(bus_space_handle_t, bus_size_t,
u_int64_t);
void x86_bus_space_io_write_multi_1(bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t);
void x86_bus_space_io_write_multi_2(bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t);
void x86_bus_space_io_write_multi_4(bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t);
void x86_bus_space_io_write_multi_8(bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t);
void x86_bus_space_io_write_region_1(bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t);
void x86_bus_space_io_write_region_2(bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t);
void x86_bus_space_io_write_region_4(bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t);
void x86_bus_space_io_write_region_8(bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t);
void x86_bus_space_io_set_multi_1(bus_space_handle_t, bus_size_t,
u_int8_t, size_t);
void x86_bus_space_io_set_multi_2(bus_space_handle_t, bus_size_t,
u_int16_t, size_t);
void x86_bus_space_io_set_multi_4(bus_space_handle_t, bus_size_t,
u_int32_t, size_t);
void x86_bus_space_io_set_multi_8(bus_space_handle_t, bus_size_t,
u_int64_t, size_t);
void x86_bus_space_io_set_region_1(bus_space_handle_t, bus_size_t,
u_int8_t, size_t);
void x86_bus_space_io_set_region_2(bus_space_handle_t, bus_size_t,
u_int16_t, size_t);
void x86_bus_space_io_set_region_4(bus_space_handle_t, bus_size_t,
u_int32_t, size_t);
void x86_bus_space_io_set_region_8(bus_space_handle_t, bus_size_t,
u_int64_t, size_t);
void x86_bus_space_io_copy_1(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void x86_bus_space_io_copy_2(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void x86_bus_space_io_copy_4(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void x86_bus_space_io_copy_8(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void * x86_bus_space_io_vaddr(bus_space_handle_t);
paddr_t x86_bus_space_io_mmap(bus_addr_t, off_t, int, int);
const struct x86_bus_space_ops x86_bus_space_io_ops = {
x86_bus_space_io_read_1,
x86_bus_space_io_read_2,
x86_bus_space_io_read_4,
x86_bus_space_io_read_8,
x86_bus_space_io_read_multi_1,
x86_bus_space_io_read_multi_2,
x86_bus_space_io_read_multi_4,
x86_bus_space_io_read_multi_8,
x86_bus_space_io_read_region_1,
x86_bus_space_io_read_region_2,
x86_bus_space_io_read_region_4,
x86_bus_space_io_read_region_8,
x86_bus_space_io_write_1,
x86_bus_space_io_write_2,
x86_bus_space_io_write_4,
x86_bus_space_io_write_8,
x86_bus_space_io_write_multi_1,
x86_bus_space_io_write_multi_2,
x86_bus_space_io_write_multi_4,
x86_bus_space_io_write_multi_8,
x86_bus_space_io_write_region_1,
x86_bus_space_io_write_region_2,
x86_bus_space_io_write_region_4,
x86_bus_space_io_write_region_8,
x86_bus_space_io_set_multi_1,
x86_bus_space_io_set_multi_2,
x86_bus_space_io_set_multi_4,
x86_bus_space_io_set_multi_8,
x86_bus_space_io_set_region_1,
x86_bus_space_io_set_region_2,
x86_bus_space_io_set_region_4,
x86_bus_space_io_set_region_8,
x86_bus_space_io_copy_1,
x86_bus_space_io_copy_2,
x86_bus_space_io_copy_4,
x86_bus_space_io_copy_8,
x86_bus_space_io_vaddr,
x86_bus_space_io_mmap
};
u_int8_t x86_bus_space_mem_read_1(bus_space_handle_t, bus_size_t);
u_int16_t x86_bus_space_mem_read_2(bus_space_handle_t, bus_size_t);
u_int32_t x86_bus_space_mem_read_4(bus_space_handle_t, bus_size_t);
u_int64_t x86_bus_space_mem_read_8(bus_space_handle_t, bus_size_t);
void x86_bus_space_mem_read_multi_1(bus_space_handle_t, bus_size_t,
u_int8_t *, bus_size_t);
void x86_bus_space_mem_read_multi_2(bus_space_handle_t, bus_size_t,
u_int16_t *, bus_size_t);
void x86_bus_space_mem_read_multi_4(bus_space_handle_t, bus_size_t,
u_int32_t *, bus_size_t);
void x86_bus_space_mem_read_multi_8(bus_space_handle_t, bus_size_t,
u_int64_t *, bus_size_t);
void x86_bus_space_mem_read_region_1(bus_space_handle_t, bus_size_t,
u_int8_t *, bus_size_t);
void x86_bus_space_mem_read_region_2(bus_space_handle_t, bus_size_t,
u_int16_t *, bus_size_t);
void x86_bus_space_mem_read_region_4(bus_space_handle_t, bus_size_t,
u_int32_t *, bus_size_t);
void x86_bus_space_mem_read_region_8(bus_space_handle_t, bus_size_t,
u_int64_t *, bus_size_t);
void x86_bus_space_mem_write_1(bus_space_handle_t, bus_size_t,
u_int8_t);
void x86_bus_space_mem_write_2(bus_space_handle_t, bus_size_t,
u_int16_t);
void x86_bus_space_mem_write_4(bus_space_handle_t, bus_size_t,
u_int32_t);
void x86_bus_space_mem_write_8(bus_space_handle_t, bus_size_t,
u_int64_t);
void x86_bus_space_mem_write_multi_1(bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t);
void x86_bus_space_mem_write_multi_2(bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t);
void x86_bus_space_mem_write_multi_4(bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t);
void x86_bus_space_mem_write_multi_8(bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t);
void x86_bus_space_mem_write_region_1(bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t);
void x86_bus_space_mem_write_region_2(bus_space_handle_t,
bus_size_t, const u_int16_t *, bus_size_t);
void x86_bus_space_mem_write_region_4(bus_space_handle_t,
bus_size_t, const u_int32_t *, bus_size_t);
void x86_bus_space_mem_write_region_8(bus_space_handle_t,
bus_size_t, const u_int64_t *, bus_size_t);
void x86_bus_space_mem_set_multi_1(bus_space_handle_t, bus_size_t,
u_int8_t, size_t);
void x86_bus_space_mem_set_multi_2(bus_space_handle_t, bus_size_t,
u_int16_t, size_t);
void x86_bus_space_mem_set_multi_4(bus_space_handle_t, bus_size_t,
u_int32_t, size_t);
void x86_bus_space_mem_set_multi_8(bus_space_handle_t, bus_size_t,
u_int64_t, size_t);
void x86_bus_space_mem_set_region_1(bus_space_handle_t, bus_size_t,
u_int8_t, size_t);
void x86_bus_space_mem_set_region_2(bus_space_handle_t, bus_size_t,
u_int16_t, size_t);
void x86_bus_space_mem_set_region_4(bus_space_handle_t, bus_size_t,
u_int32_t, size_t);
void x86_bus_space_mem_set_region_8(bus_space_handle_t, bus_size_t,
u_int64_t, size_t);
void x86_bus_space_mem_copy_1(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void x86_bus_space_mem_copy_2(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void x86_bus_space_mem_copy_4(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void x86_bus_space_mem_copy_8(bus_space_handle_t, bus_size_t,
bus_space_handle_t, bus_size_t, size_t);
void * x86_bus_space_mem_vaddr(bus_space_handle_t);
paddr_t x86_bus_space_mem_mmap(bus_addr_t, off_t, int, int);
const struct x86_bus_space_ops x86_bus_space_mem_ops = {
x86_bus_space_mem_read_1,
x86_bus_space_mem_read_2,
x86_bus_space_mem_read_4,
x86_bus_space_mem_read_8,
x86_bus_space_mem_read_multi_1,
x86_bus_space_mem_read_multi_2,
x86_bus_space_mem_read_multi_4,
x86_bus_space_mem_read_multi_8,
x86_bus_space_mem_read_region_1,
x86_bus_space_mem_read_region_2,
x86_bus_space_mem_read_region_4,
x86_bus_space_mem_read_region_8,
x86_bus_space_mem_write_1,
x86_bus_space_mem_write_2,
x86_bus_space_mem_write_4,
x86_bus_space_mem_write_8,
x86_bus_space_mem_write_multi_1,
x86_bus_space_mem_write_multi_2,
x86_bus_space_mem_write_multi_4,
x86_bus_space_mem_write_multi_8,
x86_bus_space_mem_write_region_1,
x86_bus_space_mem_write_region_2,
x86_bus_space_mem_write_region_4,
x86_bus_space_mem_write_region_8,
x86_bus_space_mem_set_multi_1,
x86_bus_space_mem_set_multi_2,
x86_bus_space_mem_set_multi_4,
x86_bus_space_mem_set_multi_8,
x86_bus_space_mem_set_region_1,
x86_bus_space_mem_set_region_2,
x86_bus_space_mem_set_region_4,
x86_bus_space_mem_set_region_8,
x86_bus_space_mem_copy_1,
x86_bus_space_mem_copy_2,
x86_bus_space_mem_copy_4,
x86_bus_space_mem_copy_8,
x86_bus_space_mem_vaddr,
x86_bus_space_mem_mmap
};
void
x86_bus_space_init(void)
{
/*
* Initialize the I/O port and I/O mem extent maps.
* Note: we don't have to check the return value since
* creation of a fixed extent map will never fail (since
* descriptor storage has already been allocated).
*
* N.B. The iomem extent manages _all_ physical addresses
* on the machine. When the amount of RAM is found, the two
* extents of RAM are allocated from the map (0 -> ISA hole
* and end of ISA hole -> end of RAM).
*/
ioport_ex = extent_create("ioport", 0x0, 0xffff, M_DEVBUF,
(caddr_t)ioport_ex_storage, sizeof(ioport_ex_storage),
EX_NOCOALESCE|EX_NOWAIT);
iomem_ex = extent_create("iomem", 0x0, 0xffffffffffff, M_DEVBUF,
(caddr_t)iomem_ex_storage, sizeof(iomem_ex_storage),
EX_NOCOALESCE|EX_NOWAIT);
}
void
x86_bus_space_mallocok(void)
{
ioport_malloc_safe = 1;
}
int
bus_space_map(bus_space_tag_t t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
int error;
struct extent *ex;
/*
* Pick the appropriate extent map.
*/
if (t == X86_BUS_SPACE_IO) {
ex = ioport_ex;
if (flags & BUS_SPACE_MAP_LINEAR)
return (EINVAL);
} else if (t == X86_BUS_SPACE_MEM)
ex = iomem_ex;
else
panic("bus_space_map: bad bus space tag");
/*
* Before we go any further, let's make sure that this
* region is available.
*/
error = extent_alloc_region(ex, bpa, size,
EX_NOWAIT | (ioport_malloc_safe ? EX_MALLOCOK : 0));
if (error)
return (error);
/*
* For I/O space, that's all she wrote.
*/
if (t == X86_BUS_SPACE_IO) {
*bshp = bpa;
return (0);
}
if (bpa >= IOM_BEGIN && (bpa + size) <= IOM_END) {
*bshp = (bus_space_handle_t)ISA_HOLE_VADDR(bpa);
return(0);
}
/*
* For memory space, map the bus physical address to
* a kernel virtual address.
*/
error = x86_mem_add_mapping(bpa, size, flags, bshp);
if (error) {
if (extent_free(ex, bpa, size, EX_NOWAIT |
(ioport_malloc_safe ? EX_MALLOCOK : 0))) {
printf("bus_space_map: pa 0x%lx, size 0x%lx\n",
bpa, size);
printf("bus_space_map: can't free region\n");
}
}
return (error);
}
int
_bus_space_map(bus_space_tag_t t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
/*
* For I/O space, just fill in the handle.
*/
if (t == X86_BUS_SPACE_IO) {
*bshp = bpa;
return (0);
}
/*
* For memory space, map the bus physical address to
* a kernel virtual address.
*/
return (x86_mem_add_mapping(bpa, size, flags, bshp));
}
int
bus_space_alloc(bus_space_tag_t 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 extent *ex;
u_long bpa;
int error;
/*
* Pick the appropriate extent map.
*/
if (t == X86_BUS_SPACE_IO) {
ex = ioport_ex;
} else if (t == X86_BUS_SPACE_MEM)
ex = iomem_ex;
else
panic("bus_space_alloc: bad bus space tag");
/*
* Sanity check the allocation against the extent's boundaries.
*/
if (rstart < ex->ex_start || rend > ex->ex_end)
panic("bus_space_alloc: bad region start/end");
/*
* Do the requested allocation.
*/
error = extent_alloc_subregion(ex, rstart, rend, size, alignment,
0, boundary,
EX_FAST | EX_NOWAIT | (ioport_malloc_safe ? EX_MALLOCOK : 0),
&bpa);
if (error)
return (error);
/*
* For I/O space, that's all she wrote.
*/
if (t == X86_BUS_SPACE_IO) {
*bshp = *bpap = bpa;
return (0);
}
/*
* For memory space, map the bus physical address to
* a kernel virtual address.
*/
error = x86_mem_add_mapping(bpa, size, flags, bshp);
if (error) {
if (extent_free(iomem_ex, bpa, size, EX_NOWAIT |
(ioport_malloc_safe ? EX_MALLOCOK : 0))) {
printf("bus_space_alloc: pa 0x%lx, size 0x%lx\n",
bpa, size);
printf("bus_space_alloc: can't free region\n");
}
}
*bpap = bpa;
return (error);
}
int
x86_mem_add_mapping(bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
paddr_t pa, endpa;
vaddr_t va;
bus_size_t map_size;
int pmap_flags = PMAP_NOCACHE;
pa = trunc_page(bpa);
endpa = round_page(bpa + size);
#ifdef DIAGNOSTIC
if (endpa <= pa && endpa != 0)
panic("bus_mem_add_mapping: overflow");
#endif
map_size = endpa - pa;
va = (vaddr_t)km_alloc(map_size, &kv_any, &kp_none, &kd_nowait);
if (va == 0)
return (ENOMEM);
*bshp = (bus_space_handle_t)(va + (bpa & PGOFSET));
if (flags & BUS_SPACE_MAP_CACHEABLE)
pmap_flags = 0;
else if (flags & BUS_SPACE_MAP_PREFETCHABLE)
pmap_flags = PMAP_WC;
for (; map_size > 0;
pa += PAGE_SIZE, va += PAGE_SIZE, map_size -= PAGE_SIZE)
pmap_kenter_pa(va, pa | pmap_flags, PROT_READ | PROT_WRITE);
pmap_update(pmap_kernel());
return 0;
}
/*
* void _bus_space_unmap(bus_space_tag bst, bus_space_handle bsh,
* bus_size_t size, bus_addr_t *adrp)
*
* This function unmaps memory- or io-space mapped by the function
* _bus_space_map(). This function works nearly as same as
* bus_space_unmap(), but this function does not ask kernel
* built-in extents and returns physical address of the bus space,
* for the convenience of the extra extent manager.
*/
void
_bus_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size,
bus_addr_t *adrp)
{
u_long va, endva;
bus_addr_t bpa;
/*
* Find the correct bus physical address.
*/
if (t == X86_BUS_SPACE_IO) {
bpa = bsh;
} else if (t == X86_BUS_SPACE_MEM) {
bpa = (bus_addr_t)ISA_PHYSADDR(bsh);
if (IOM_BEGIN <= bpa && bpa <= IOM_END)
goto ok;
va = trunc_page(bsh);
endva = round_page(bsh + size);
#ifdef DIAGNOSTIC
if (endva <= va)
panic("_bus_space_unmap: overflow");
#endif
(void) pmap_extract(pmap_kernel(), va, &bpa);
bpa += (bsh & PGOFSET);
pmap_kremove(va, endva - va);
pmap_update(pmap_kernel());
/*
* Free the kernel virtual mapping.
*/
km_free((void *)va, endva - va, &kv_any, &kp_none);
} else
panic("bus_space_unmap: bad bus space tag");
ok:
if (adrp != NULL)
*adrp = bpa;
}
void
bus_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
{
struct extent *ex;
u_long va, endva;
bus_addr_t bpa;
/*
* Find the correct extent and bus physical address.
*/
if (t == X86_BUS_SPACE_IO) {
ex = ioport_ex;
bpa = bsh;
} else if (t == X86_BUS_SPACE_MEM) {
ex = iomem_ex;
bpa = (bus_addr_t)ISA_PHYSADDR(bsh);
if (IOM_BEGIN <= bpa && bpa <= IOM_END)
goto ok;
va = trunc_page(bsh);
endva = round_page(bsh + size);
#ifdef DIAGNOSTIC
if (endva <= va)
panic("bus_space_unmap: overflow");
#endif
(void)pmap_extract(pmap_kernel(), va, &bpa);
bpa += (bsh & PGOFSET);
pmap_kremove(va, endva - va);
pmap_update(pmap_kernel());
/*
* Free the kernel virtual mapping.
*/
km_free((void *)va, endva - va, &kv_any, &kp_none);
} else
panic("bus_space_unmap: bad bus space tag");
ok:
if (extent_free(ex, bpa, size,
EX_NOWAIT | (ioport_malloc_safe ? EX_MALLOCOK : 0))) {
printf("bus_space_unmap: %s 0x%lx, size 0x%lx\n",
(t == X86_BUS_SPACE_IO) ? "port" : "pa", bpa, size);
printf("bus_space_unmap: can't free region\n");
}
}
void
bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
{
/* bus_space_unmap() does all that we need to do. */
bus_space_unmap(t, bsh, size);
}
int
bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)
{
*nbshp = bsh + offset;
return (0);
}
u_int8_t
x86_bus_space_io_read_1(bus_space_handle_t h, bus_size_t o)
{
return (inb(h + o));
}
u_int16_t
x86_bus_space_io_read_2(bus_space_handle_t h, bus_size_t o)
{
return (inw(h + o));
}
u_int32_t
x86_bus_space_io_read_4(bus_space_handle_t h, bus_size_t o)
{
return (inl(h + o));
}
u_int64_t
x86_bus_space_io_read_8(bus_space_handle_t h, bus_size_t o)
{
panic("bus_space_read_8: invalid bus space tag");
}
void
x86_bus_space_io_read_multi_1(bus_space_handle_t h, bus_size_t o,
u_int8_t *ptr, bus_size_t cnt)
{
insb(h + o, ptr, cnt);
}
void
x86_bus_space_io_read_multi_2(bus_space_handle_t h, bus_size_t o,
u_int16_t *ptr, bus_size_t cnt)
{
insw(h + o, ptr, cnt);
}
void
x86_bus_space_io_read_multi_4(bus_space_handle_t h, bus_size_t o,
u_int32_t *ptr, bus_size_t cnt)
{
insl(h + o, ptr, cnt);
}
void
x86_bus_space_io_read_multi_8(bus_space_handle_t h, bus_size_t o,
u_int64_t *ptr, bus_size_t cnt)
{
panic("bus_space_multi_8: invalid bus space tag");
}
void
x86_bus_space_io_read_region_1(bus_space_handle_t h,
bus_size_t o, u_int8_t *ptr, bus_size_t cnt)
{
int dummy1;
void *dummy2;
int dummy3;
int __x;
u_int32_t port = h + o;
__asm volatile(
"1: inb %w1,%%al ;"
" stosb ;"
" incl %1 ;"
" loop 1b" :
"=&a" (__x), "=d" (dummy1), "=D" (dummy2),
"=c" (dummy3) :
"1" (port), "2" (ptr), "3" (cnt) :
"memory");
}
void
x86_bus_space_io_read_region_2(bus_space_handle_t h,
bus_size_t o, u_int16_t *ptr, bus_size_t cnt)
{
int dummy1;
void *dummy2;
int dummy3;
int __x;
u_int32_t port = h + o;
__asm volatile(
"1: inw %w1,%%ax ;"
" stosw ;"
" addl $2,%1 ;"
" loop 1b" :
"=&a" (__x), "=d" (dummy1), "=D" (dummy2),
"=c" (dummy3) :
"1" ((port)), "2" ((ptr)), "3" ((cnt)) :
"memory");
}
void
x86_bus_space_io_read_region_4(bus_space_handle_t h,
bus_size_t o, u_int32_t *ptr, bus_size_t cnt)
{
int dummy1;
void *dummy2;
int dummy3;
int __x;
u_int32_t port = h + o;
__asm volatile(
"1: inl %w1,%%eax ;"
" stosl ;"
" addl $4,%1 ;"
" loop 1b" :
"=&a" (__x), "=d" (dummy1), "=D" (dummy2),
"=c" (dummy3) :
"1" (port), "2" (ptr), "3" (cnt) :
"memory");
}
void
x86_bus_space_io_read_region_8(bus_space_handle_t h,
bus_size_t o, u_int64_t *ptr, bus_size_t cnt)
{
panic("bus_space_read_region_8: invalid bus space tag");
}
void
x86_bus_space_io_write_1(bus_space_handle_t h, bus_size_t o, u_int8_t v)
{
outb(h + o, v);
}
void
x86_bus_space_io_write_2(bus_space_handle_t h, bus_size_t o, u_int16_t v)
{
outw(h + o, v);
}
void
x86_bus_space_io_write_4(bus_space_handle_t h, bus_size_t o, u_int32_t v)
{
outl(h + o, v);
}
void
x86_bus_space_io_write_8(bus_space_handle_t h, bus_size_t o, u_int64_t v)
{
panic("bus_space_write_8: invalid bus space tag");
}
void
x86_bus_space_io_write_multi_1(bus_space_handle_t h,
bus_size_t o, const u_int8_t *ptr, bus_size_t cnt)
{
outsb(h + o, ptr, cnt);
}
void
x86_bus_space_io_write_multi_2(bus_space_handle_t h,
bus_size_t o, const u_int16_t *ptr, bus_size_t cnt)
{
outsw(h + o, ptr, cnt);
}
void
x86_bus_space_io_write_multi_4(bus_space_handle_t h,
bus_size_t o, const u_int32_t *ptr, bus_size_t cnt)
{
outsl(h + o, ptr, cnt);
}
void
x86_bus_space_io_write_multi_8(bus_space_handle_t h,
bus_size_t o, const u_int64_t *ptr, bus_size_t cnt)
{
panic("bus_space_write_multi_8: invalid bus space tag");
}
void
x86_bus_space_io_write_region_1(bus_space_handle_t h,
bus_size_t o, const u_int8_t *ptr, bus_size_t cnt)
{
int dummy1;
void *dummy2;
int dummy3;
int __x;
u_int32_t port = h + o;
__asm volatile(
"1: lodsb ;"
" outb %%al,%w1 ;"
" incl %1 ;"
" loop 1b" :
"=&a" (__x), "=d" (dummy1), "=S" (dummy2),
"=c" (dummy3) :
"1" (port), "2" (ptr), "3" (cnt) :
"memory");
}
void
x86_bus_space_io_write_region_2(bus_space_handle_t h,
bus_size_t o, const u_int16_t *ptr, bus_size_t cnt)
{
int dummy1;
void *dummy2;
int dummy3;
int __x;
u_int32_t port = h + o;
__asm volatile(
"1: lodsw ;"
" outw %%ax,%w1 ;"
" addl $2,%1 ;"
" loop 1b" :
"=&a" (__x), "=d" (dummy1), "=S" (dummy2),
"=c" (dummy3) :
"1" (port), "2" (ptr), "3" (cnt) :
"memory");
}
void
x86_bus_space_io_write_region_4(bus_space_handle_t h,
bus_size_t o, const u_int32_t *ptr, bus_size_t cnt)
{
int dummy1;
void *dummy2;
int dummy3;
int __x;
u_int32_t port = h + o;
__asm volatile(
"1: lodsl ;"
" outl %%eax,%w1 ;"
" addl $4,%1 ;"
" loop 1b" :
"=&a" (__x), "=d" (dummy1), "=S" (dummy2),
"=c" (dummy3) :
"1" (port), "2" (ptr), "3" (cnt) :
"memory");
}
void
x86_bus_space_io_write_region_8(bus_space_handle_t h,
bus_size_t o, const u_int64_t *ptr, bus_size_t cnt)
{
panic("bus_space_write_region_8: invalid bus space tag");
}
void
x86_bus_space_io_set_multi_1(bus_space_handle_t h, bus_size_t o,
u_int8_t v, size_t c)
{
bus_addr_t addr = h + o;
while (c--)
outb(addr, v);
}
void
x86_bus_space_io_set_multi_2(bus_space_handle_t h, bus_size_t o,
u_int16_t v, size_t c)
{
bus_addr_t addr = h + o;
while (c--)
outw(addr, v);
}
void
x86_bus_space_io_set_multi_4(bus_space_handle_t h, bus_size_t o,
u_int32_t v, size_t c)
{
bus_addr_t addr = h + o;
while (c--)
outl(addr, v);
}
void
x86_bus_space_io_set_multi_8(bus_space_handle_t h, bus_size_t o,
u_int64_t v, size_t c)
{
panic("bus_space_set_multi_8: invalid bus space tag");
}
void
x86_bus_space_io_set_region_1(bus_space_handle_t h, bus_size_t o,
u_int8_t v, size_t c)
{
bus_addr_t addr = h + o;
for (; c != 0; c--, addr++)
outb(addr, v);
}
void
x86_bus_space_io_set_region_2(bus_space_handle_t h, bus_size_t o,
u_int16_t v, size_t c)
{
bus_addr_t addr = h + o;
for (; c != 0; c--, addr += sizeof(v))
outw(addr, v);
}
void
x86_bus_space_io_set_region_4(bus_space_handle_t h, bus_size_t o,
u_int32_t v, size_t c)
{
bus_addr_t addr = h + o;
for (; c != 0; c--, addr += sizeof(v))
outl(addr, v);
}
void
x86_bus_space_io_set_region_8(bus_space_handle_t h, bus_size_t o,
u_int64_t v, size_t c)
{
panic("bus_space_set_region_8: invalid bus space tag");
}
void
x86_bus_space_io_copy_1(bus_space_handle_t h1, bus_size_t o1,
bus_space_handle_t h2, bus_size_t o2, size_t c)
{
bus_addr_t addr1 = h1 + o1;
bus_addr_t addr2 = h2 + o2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; c != 0; c--, addr1++, addr2++)
outb(addr2, inb(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += (c - 1), addr2 += (c - 1);
c != 0; c--, addr1--, addr2--)
outb(addr2, inb(addr1));
}
}
void
x86_bus_space_io_copy_2(bus_space_handle_t h1, bus_size_t o1,
bus_space_handle_t h2, bus_size_t o2, size_t c)
{
bus_addr_t addr1 = h1 + o1;
bus_addr_t addr2 = h2 + o2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; c != 0; c--, addr1 += 2, addr2 += 2)
outw(addr2, inw(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 2 * (c - 1), addr2 += 2 * (c - 1);
c != 0; c--, addr1 -= 2, addr2 -= 2)
outw(addr2, inw(addr1));
}
}
void
x86_bus_space_io_copy_4(bus_space_handle_t h1, bus_size_t o1,
bus_space_handle_t h2, bus_size_t o2, size_t c)
{
bus_addr_t addr1 = h1 + o1;
bus_addr_t addr2 = h2 + o2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; c != 0; c--, addr1 += 4, addr2 += 4)
outl(addr2, inl(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 4 * (c - 1), addr2 += 4 * (c - 1);
c != 0; c--, addr1 -= 4, addr2 -= 4)