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/* $OpenBSD: octeon_bus_space.c,v 1.1 2010/10/28 22:52:10 syuu Exp $ */
/*
* Copyright (c) 2001-2003 Opsycon AB (www.opsycon.se / www.opsycon.com)
*
* 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.
*
*/
/*
* Simple generic bus access primitives.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/bus.h>
uint8_t
generic_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
{
return *(volatile uint8_t *)(h + o);
}
uint16_t
generic_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
{
return *(volatile uint16_t *)(h + o);
}
uint32_t
generic_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
{
return *(volatile uint32_t *)(h + o);
}
uint64_t
generic_space_read_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
{
return *(volatile uint64_t *)(h + o);
}
void
generic_space_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
uint8_t v)
{
*(volatile uint8_t *)(h + o) = v;
}
void
generic_space_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
uint16_t v)
{
*(volatile uint16_t *)(h + o) = v;
}
void
generic_space_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
uint32_t v)
{
*(volatile uint32_t *)(h + o) = v;
}
void
generic_space_write_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
uint64_t v)
{
*(volatile uint64_t *)(h + o) = v;
}
void
generic_space_read_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
uint8_t *buf, bus_size_t len)
{
volatile uint16_t *addr = (volatile uint16_t *)(h + o);
len >>= 1;
while (len-- != 0) {
*(uint16_t *)buf = *addr;
buf += 2;
}
}
void
generic_space_write_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
const uint8_t *buf, bus_size_t len)
{
volatile uint16_t *addr = (volatile uint16_t *)(h + o);
len >>= 1;
while (len-- != 0) {
*addr = *(uint16_t *)buf;
buf += 2;
}
}
void
generic_space_read_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
uint8_t *buf, bus_size_t len)
{
volatile uint32_t *addr = (volatile uint32_t *)(h + o);
len >>= 2;
while (len-- != 0) {
*(uint32_t *)buf = *addr;
buf += 4;
}
}
void
generic_space_write_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
const uint8_t *buf, bus_size_t len)
{
volatile uint32_t *addr = (volatile uint32_t *)(h + o);
len >>= 2;
while (len-- != 0) {
*addr = *(uint32_t *)buf;
buf += 4;
}
}
void
generic_space_read_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
uint8_t *buf, bus_size_t len)
{
volatile uint64_t *addr = (volatile uint64_t *)(h + o);
len >>= 3;
while (len-- != 0) {
*(uint64_t *)buf = *addr;
buf += 8;
}
}
void
generic_space_write_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
const uint8_t *buf, bus_size_t len)
{
volatile uint64_t *addr = (volatile uint64_t *)(h + o);
len >>= 3;
while (len-- != 0) {
*addr = *(uint64_t *)buf;
buf += 8;
}
}
int
generic_space_map(bus_space_tag_t t, bus_addr_t offs, bus_size_t size,
int flags, bus_space_handle_t *bshp)
{
*bshp = t->bus_base + offs;
return 0;
}
void
generic_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
{
}
int
generic_space_region(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;
}
void *
generic_space_vaddr(bus_space_tag_t t, bus_space_handle_t h)
{
return (void *)h;
}
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