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/* $FreeBSD$ */
/*-
* Copyright (c) 2013 Hans Petter Selasky. 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 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 AUTHOR 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 <bsd_kernel.h>
struct burst {
uint32_t dw0;
uint32_t dw1;
uint32_t dw2;
uint32_t dw3;
uint32_t dw4;
uint32_t dw5;
uint32_t dw6;
uint32_t dw7;
};
void
bus_space_read_multi_1(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint8_t *datap, bus_size_t count)
{
while (count--) {
*datap++ = bus_space_read_1(t, h, offset);
}
}
void
bus_space_read_multi_2(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint16_t *datap, bus_size_t count)
{
while (count--) {
*datap++ = bus_space_read_2(t, h, offset);
}
}
void
bus_space_read_multi_4(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint32_t *datap, bus_size_t count)
{
h += offset;
while (count--) {
*datap++ = *((volatile uint32_t *)h);
}
}
void
bus_space_write_multi_1(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint8_t *datap, bus_size_t count)
{
while (count--) {
uint8_t temp = *datap++;
bus_space_write_1(t, h, offset, temp);
}
}
void
bus_space_write_multi_2(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint16_t *datap, bus_size_t count)
{
while (count--) {
uint16_t temp = *datap++;
bus_space_write_2(t, h, offset, temp);
}
}
void
bus_space_write_multi_4(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint32_t *datap, bus_size_t count)
{
h += offset;
while (count--) {
*((volatile uint32_t *)h) = *datap++;
}
}
void
bus_space_write_1(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint8_t data)
{
*((volatile uint8_t *)(h + offset)) = data;
}
void
bus_space_write_2(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint16_t data)
{
*((volatile uint16_t *)(h + offset)) = data;
}
void
bus_space_write_4(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint32_t data)
{
*((volatile uint32_t *)(h + offset)) = data;
}
uint8_t
bus_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t offset)
{
return (*((volatile uint8_t *)(h + offset)));
}
uint16_t
bus_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t offset)
{
return (*((volatile uint16_t *)(h + offset)));
}
uint32_t
bus_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t offset)
{
return (*((volatile uint32_t *)(h + offset)));
}
void
bus_space_read_region_1(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint8_t *datap, bus_size_t count)
{
h += offset;
while (count--) {
*datap++ = *((volatile uint8_t *)h);
h += 1;
}
}
void
bus_space_write_region_1(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint8_t *datap, bus_size_t count)
{
h += offset;
while (count--) {
*((volatile uint8_t *)h) = *datap++;
h += 1;
}
}
void
bus_space_read_region_4(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint32_t *datap, bus_size_t count)
{
enum { BURST = sizeof(struct burst) / 4 };
h += offset;
while (count >= BURST) {
*(struct burst *)datap = *((/* volatile */ struct burst *)h);
h += BURST * 4;
datap += BURST;
count -= BURST;
}
while (count--) {
*datap++ = *((volatile uint32_t *)h);
h += 4;
}
}
void
bus_space_write_region_4(bus_space_tag_t t, bus_space_handle_t h,
bus_size_t offset, uint32_t *datap, bus_size_t count)
{
enum { BURST = sizeof(struct burst) / 4 };
h += offset;
while (count >= BURST) {
*((/* volatile */ struct burst *)h) = *(struct burst *)datap;
h += BURST * 4;
datap += BURST;
count -= BURST;
}
while (count--) {
*((volatile uint32_t *)h) = *datap++;
h += 4;
}
}
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