NetBSD-5.0.2/sys/arch/alpha/jensenio/jensenio_bus_intio.c
/* $NetBSD: jensenio_bus_intio.c,v 1.2 2008/04/28 20:23:11 martin Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: jensenio_bus_intio.c,v 1.2 2008/04/28 20:23:11 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/extent.h>
#include <machine/bus.h>
#include <dev/eisa/eisavar.h>
#include <dev/isa/isavar.h>
#include <alpha/jensenio/jensenioreg.h>
#include <alpha/jensenio/jenseniovar.h>
/* mapping/unmapping */
int jensenio_intio_map(void *, bus_addr_t, bus_size_t, int,
bus_space_handle_t *, int);
void jensenio_intio_unmap(void *, bus_space_handle_t,
bus_size_t, int);
int jensenio_intio_subregion(void *, bus_space_handle_t,
bus_size_t, bus_size_t, bus_space_handle_t *);
/* allocation/deallocation */
/* Not supported for Internal space */
/* barrier */
inline void jensenio_intio_barrier(void *, bus_space_handle_t,
bus_size_t, bus_size_t, int);
/* read (single) */
inline u_int8_t jensenio_intio_read_1(void *, bus_space_handle_t, bus_size_t);
/* read multiple */
void jensenio_intio_read_multi_1(void *, bus_space_handle_t,
bus_size_t, u_int8_t *, bus_size_t);
/* read region */
/* Not supported for Internal space */
/* write (single) */
inline void jensenio_intio_write_1(void *, bus_space_handle_t,
bus_size_t, u_int8_t);
/* write multiple */
void jensenio_intio_write_multi_1(void *, bus_space_handle_t,
bus_size_t, const u_int8_t *, bus_size_t);
/* write region */
/* Not supported for Internal space */
/* set multiple */
void jensenio_intio_set_multi_1(void *, bus_space_handle_t,
bus_size_t, u_int8_t, bus_size_t);
/* set region */
/* Not supported for Internal space */
/* copy */
/* Not supported for Internal space */
void
jensenio_bus_intio_init(bus_space_tag_t t, void *v)
{
/*
* Initialize the bus space tag.
*/
memset(t, 0, sizeof(*t));
/* cookie */
t->abs_cookie = v;
/* mapping/unmapping */
t->abs_map = jensenio_intio_map;
t->abs_unmap = jensenio_intio_unmap;
t->abs_subregion = jensenio_intio_subregion;
/* barrier */
t->abs_barrier = jensenio_intio_barrier;
/* read (single) */
t->abs_r_1 = jensenio_intio_read_1;
/* read multiple */
t->abs_rm_1 = jensenio_intio_read_multi_1;
/* write (single) */
t->abs_w_1 = jensenio_intio_write_1;
/* write multiple */
t->abs_wm_1 = jensenio_intio_write_multi_1;
/* set multiple */
t->abs_sm_1 = jensenio_intio_set_multi_1;
/*
* Extent map is already set up.
*/
}
int
jensenio_intio_map(void *v, bus_addr_t ioaddr, bus_size_t iosize, int flags,
bus_space_handle_t *iohp, int acct)
{
struct jensenio_config *jcp = v;
int linear = flags & BUS_SPACE_MAP_LINEAR;
int error;
/*
* Can't map i/o space linearly.
*/
if (linear)
return (EOPNOTSUPP);
if (acct) {
#ifdef EXTENT_DEBUG
printf("intio: allocating 0x%lx to 0x%lx\n", ioaddr,
ioaddr + iosize - 1);
#endif
error = extent_alloc_region(jcp->jc_io_ex, ioaddr, iosize,
EX_NOWAIT | (jcp->jc_mallocsafe ? EX_MALLOCOK : 0));
if (error) {
#ifdef EXTENT_DEBUG
printf("intio: allocation failed (%d)\n", error);
extent_print(jcp->jc_io_ex);
#endif
return (error);
}
}
*iohp = ALPHA_PHYS_TO_K0SEG((ioaddr << 9) + JENSEN_VL82C106);
return (0);
}
void
jensenio_intio_unmap(void *v, bus_space_handle_t ioh, bus_size_t iosize,
int acct)
{
struct jensenio_config *jcp = v;
bus_addr_t ioaddr;
int error;
if (acct == 0)
return;
#ifdef EXTENT_DEBUG
printf("intio: freeing handle 0x%lx for 0x%lx\n", ioh, iosize);
#endif
ioh = ALPHA_K0SEG_TO_PHYS(ioh);
ioaddr = (ioh - JENSEN_VL82C106) >> 9;
#ifdef EXTENT_DEBUG
printf("intio: freeing 0x%lx to 0x%lx\n", ioaddr, ioaddr + iosize - 1);
#endif
error = extent_free(jcp->jc_io_ex, ioaddr, iosize,
EX_NOWAIT | (jcp->jc_mallocsafe ? EX_MALLOCOK : 0));
if (error) {
printf("WARNING: could not unmap 0x%lx-0x%lx (error %d)\n",
ioaddr, ioaddr + iosize - 1, error);
#ifdef EXTENT_DEBUG
extent_print(jcp->jc_io_ex);
#endif
}
}
int
jensenio_intio_subregion(void *v, bus_space_handle_t ioh, bus_size_t offset,
bus_size_t size, bus_space_handle_t *nioh)
{
*nioh = ioh + (offset << 9);
return (0);
}
inline void
jensenio_intio_barrier(void *v, bus_space_handle_t h, bus_size_t o,
bus_size_t l, int f)
{
if ((f & BUS_SPACE_BARRIER_READ) != 0)
alpha_mb();
else if ((f & BUS_SPACE_BARRIER_WRITE) != 0)
alpha_wmb();
}
inline u_int8_t
jensenio_intio_read_1(void *v, bus_space_handle_t ioh, bus_size_t off)
{
register u_int32_t *port;
alpha_mb();
port = (u_int32_t *)(ioh + (off << 9));
return (*port & 0xff);
}
void
jensenio_intio_read_multi_1(void *v, bus_space_handle_t h, bus_size_t o,
u_int8_t *a, bus_size_t c)
{
while (c-- > 0) {
jensenio_intio_barrier(v, h, o, sizeof *a,
BUS_SPACE_BARRIER_READ);
*a++ = jensenio_intio_read_1(v, h, o);
}
}
inline void
jensenio_intio_write_1(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int8_t val)
{
register u_int32_t *port;
port = (u_int32_t *)(ioh + (off << 9));
*port = val;
alpha_mb();
}
void
jensenio_intio_write_multi_1(void *v, bus_space_handle_t h, bus_size_t o,
const u_int8_t *a, bus_size_t c)
{
while (c-- > 0) {
jensenio_intio_write_1(v, h, o, *a++);
jensenio_intio_barrier(v, h, o, sizeof *a,
BUS_SPACE_BARRIER_WRITE);
}
}
void
jensenio_intio_set_multi_1(void *v, bus_space_handle_t h, bus_size_t o,
u_int8_t val, bus_size_t c)
{
while (c-- > 0) {
jensenio_intio_write_1(v, h, o, val);
jensenio_intio_barrier(v, h, o, sizeof val,
BUS_SPACE_BARRIER_WRITE);
}
}