File: [local] / sys / arch / sparc / include / bus.h (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:15 2008 UTC (16 years, 4 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: bus.h,v 1.6 2006/01/01 00:41:02 millert Exp $ */
/*
* Copyright (c) 2003, Miodrag Vallat.
*
* 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.
*/
/*
* ``No-nonsense'' sparc bus_space implementation.
*
* This is a stripped down bus_space implementation for sparc, providing
* simple enough functions, suitable for inlining.
* To achieve this goal, it relies upon the following assumptions:
* - everything is memory-mapped. Hence, tags are basically not used,
* and most operation are just simple pointer arithmetic with the handle.
* - interrupt functions are not implemented; callers will provide their
* own wrappers on a need-to-do basis.
*/
#ifndef _SPARC_BUS_H_
#define _SPARC_BUS_H_
#include <machine/autoconf.h>
#include <uvm/uvm_extern.h>
#include <machine/pmap.h>
typedef u_int32_t bus_space_handle_t;
/*
* bus_space_tag_t are pointer to *modified* rom_reg structures.
* rr_iospace is used to also carry bus endianness information.
*/
typedef struct rom_reg *bus_space_tag_t;
#define TAG_LITTLE_ENDIAN 0x80000000
#define SET_TAG_BIG_ENDIAN(t) ((t))->rr_iospace &= ~TAG_LITTLE_ENDIAN
#define SET_TAG_LITTLE_ENDIAN(t) ((t))->rr_iospace |= TAG_LITTLE_ENDIAN
#define IS_TAG_LITTLE_ENDIAN(t) ((t)->rr_iospace & TAG_LITTLE_ENDIAN)
typedef u_int32_t bus_addr_t;
typedef u_int32_t bus_size_t;
/*
* General bus_space function set
*/
static int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t, int,
bus_space_handle_t *);
static int bus_space_unmap(bus_space_tag_t, bus_space_handle_t,
bus_size_t);
#define BUS_SPACE_BARRIER_READ 0
#define BUS_SPACE_BARRIER_WRITE 1
static void bus_space_barrier(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, bus_size_t, int);
static void* bus_space_vaddr(bus_space_tag_t, bus_space_handle_t);
static int bus_space_subregion(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, bus_size_t, bus_space_handle_t *);
static __inline__ int
bus_space_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, int flags,
bus_space_handle_t *handle)
{
if ((*handle = (bus_space_handle_t)mapiodev(tag,
addr, size)) != NULL)
return (0);
return (ENOMEM);
}
static __inline__ int
bus_space_unmap(bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t size)
{
/*
* The mapiodev() call eventually ended up as a set of pmap_kenter_pa()
* calls. Although the iospace va will not be reclaimed, at least
* relinquish the wiring.
*/
pmap_kremove((vaddr_t)handle, size);
pmap_update(pmap_kernel());
return (0);
}
static __inline__ void
bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, bus_size_t size, int flags)
{
/* no membar is necessary for sparc so far */
}
static __inline__ void *
bus_space_vaddr(bus_space_tag_t tag, bus_space_handle_t handle)
{
u_int32_t iospace = tag->rr_iospace;
void *rc;
tag->rr_iospace &= ~TAG_LITTLE_ENDIAN;
rc = (void *)(REG2PHYS(tag, 0) | PMAP_NC);
tag->rr_iospace = iospace;
return (rc);
}
static __inline__ int
bus_space_subregion(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, bus_size_t size, bus_space_handle_t *newh)
{
*newh = handle + offset;
return (0);
}
/*
* Read/Write/Region functions
* Most of these are straightforward and assume that everything is properly
* aligned.
*/
#define bus_space_read_1(tag, handle, offset) \
((void)(tag), *(volatile u_int8_t *)((handle) + (offset)))
#define __bus_space_read_2(tag, handle, offset) \
*(volatile u_int16_t *)((handle) + (offset))
#define __bus_space_read_4(tag, handle, offset) \
*(volatile u_int32_t *)((handle) + (offset))
#define bus_space_read_2(tag, handle, offset) \
((IS_TAG_LITTLE_ENDIAN(tag)) ? \
letoh16(__bus_space_read_2(tag, handle, offset)) : \
__bus_space_read_2(tag, handle, offset))
#define bus_space_read_4(tag, handle, offset) \
((IS_TAG_LITTLE_ENDIAN(tag)) ? \
letoh32(__bus_space_read_4(tag, handle, offset)) : \
__bus_space_read_4(tag, handle, offset))
static void bus_space_read_multi_1(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_read_multi_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t count)
{
while ((int)--count >= 0)
*dest++ = bus_space_read_1(tag, handle, offset);
}
static void bus_space_read_multi_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int16_t *, size_t);
static __inline__ void
bus_space_read_multi_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int16_t *dest, size_t count)
{
while ((int)--count >= 0)
*dest++ = bus_space_read_2(tag, handle, offset);
}
static void bus_space_read_multi_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int32_t *, size_t);
static __inline__ void
bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int32_t *dest, size_t count)
{
while ((int)--count >= 0)
*dest++ = bus_space_read_4(tag, handle, offset);
}
static void bus_space_read_raw_multi_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_read_raw_multi_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 1;
while ((int)--size >= 0) {
*(u_int16_t *)dest =
__bus_space_read_2(tag, handle, offset);
dest += 2;
}
}
static void bus_space_read_raw_multi_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_read_raw_multi_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 2;
while ((int)--size >= 0) {
*(u_int32_t *)dest =
__bus_space_read_4(tag, handle, offset);
dest += 4;
}
}
#define bus_space_write_1(tag, handle, offset, value) \
((void)(tag), *(volatile u_int8_t *)((handle) + (offset)) = (value))
#define __bus_space_write_2(tag, handle, offset, value) \
*(volatile u_int16_t *)((handle) + (offset)) = (value)
#define __bus_space_write_4(tag, handle, offset, value) \
*(volatile u_int32_t *)((handle) + (offset)) = (value)
#define bus_space_write_2(tag, handle, offset, value) \
__bus_space_write_2(tag, handle, offset, \
(IS_TAG_LITTLE_ENDIAN(tag)) ? htole16(value) : (value))
#define bus_space_write_4(tag, handle, offset, value) \
__bus_space_write_4(tag, handle, offset, \
(IS_TAG_LITTLE_ENDIAN(tag)) ? htole32(value) : (value))
static void bus_space_write_multi_1(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_write_multi_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t count)
{
while ((int)--count >= 0)
bus_space_write_1(tag, handle, offset, *dest++);
}
static void bus_space_write_multi_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int16_t *, size_t);
static __inline__ void
bus_space_write_multi_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int16_t *dest, size_t count)
{
while ((int)--count >= 0)
bus_space_write_2(tag, handle, offset, *dest++);
}
static void bus_space_write_multi_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int32_t *, size_t);
static __inline__ void
bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int32_t *dest, size_t count)
{
while ((int)--count >= 0)
bus_space_write_4(tag, handle, offset, *dest);
}
static void bus_space_write_raw_multi_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_write_raw_multi_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 1;
while ((int)--size >= 0) {
__bus_space_write_2(tag, handle, offset,
*(u_int16_t *)dest);
dest += 2;
}
}
static void bus_space_write_raw_multi_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_write_raw_multi_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 2;
while ((int)--size >= 0) {
__bus_space_write_4(tag, handle, offset,
*(u_int32_t *)dest);
dest += 4;
}
}
static void bus_space_set_multi_1(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t, size_t);
static __inline__ void
bus_space_set_multi_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t value, size_t count)
{
while ((int)--count >= 0)
bus_space_write_1(tag, handle, offset, value);
}
static void bus_space_set_multi_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int16_t, size_t);
static __inline__ void
bus_space_set_multi_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int16_t value, size_t count)
{
while ((int)--count >= 0)
bus_space_write_2(tag, handle, offset, value);
}
static void bus_space_set_multi_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int32_t, size_t);
static __inline__ void
bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int32_t value, size_t count)
{
while ((int)--count >= 0)
bus_space_write_4(tag, handle, offset, value);
}
static void bus_space_write_region_1(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_write_region_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t count)
{
while ((int)--count >= 0)
bus_space_write_1(tag, handle, offset++, *dest++);
}
static void bus_space_write_region_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int16_t *, size_t);
static __inline__ void
bus_space_write_region_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int16_t *dest, size_t count)
{
while ((int)--count >= 0) {
bus_space_write_2(tag, handle, offset, *dest++);
offset += 2;
}
}
static void bus_space_write_region_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int32_t *, size_t);
static __inline__ void
bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int32_t *dest, size_t count)
{
while ((int)--count >= 0) {
bus_space_write_4(tag, handle, offset, *dest++);
offset +=4;
}
}
static void bus_space_write_raw_region_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_write_raw_region_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 1;
while ((int)--size >= 0) {
__bus_space_write_2(tag, handle, offset, *(u_int16_t *)dest);
offset += 2;
dest += 2;
}
}
static void bus_space_write_raw_region_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_write_raw_region_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 2;
while ((int)--size >= 0) {
__bus_space_write_4(tag, handle, offset, *(u_int32_t *)dest);
offset += 4;
dest += 4;
}
}
static void bus_space_read_region_1(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_read_region_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t count)
{
while ((int)--count >= 0)
*dest++ = bus_space_read_1(tag, handle, offset++);
}
static void bus_space_read_region_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int16_t *, size_t);
static __inline__ void
bus_space_read_region_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int16_t *dest, size_t count)
{
while ((int)--count >= 0) {
*dest++ = bus_space_read_2(tag, handle, offset);
offset += 2;
}
}
static void bus_space_read_region_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int32_t *, size_t);
static __inline__ void
bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int32_t *dest, size_t count)
{
while ((int)--count >= 0) {
*dest++ = bus_space_read_4(tag, handle, offset);
offset += 4;
}
}
static void bus_space_set_region_1(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t, size_t);
static __inline__ void
bus_space_set_region_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t value, size_t count)
{
while ((int)--count >= 0)
bus_space_write_1(tag, handle, offset++, value);
}
static void bus_space_set_region_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int16_t, size_t);
static __inline__ void
bus_space_set_region_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int16_t value, size_t count)
{
while ((int)--count >= 0) {
bus_space_write_2(tag, handle, offset, value);
offset += 2;
}
}
static void bus_space_set_region_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int32_t, size_t);
static __inline__ void
bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int32_t value, size_t count)
{
while ((int)--count >= 0) {
bus_space_write_4(tag, handle, offset, value);
offset += 4;
}
}
static void bus_space_read_raw_region_2(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_read_raw_region_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 1;
while ((int)--size >= 0) {
*(u_int16_t *)dest = __bus_space_read_2(tag, handle, offset);
offset += 2;
dest += 2;
}
}
static void bus_space_read_raw_region_4(bus_space_tag_t, bus_space_handle_t,
bus_addr_t, u_int8_t *, size_t);
static __inline__ void
bus_space_read_raw_region_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_addr_t offset, u_int8_t *dest, size_t size)
{
size >>= 2;
while ((int)--size >= 0) {
*(u_int32_t *)dest = __bus_space_read_4(tag, handle, offset);
offset += 4;
dest += 4;
}
}
#endif /* _SPARC_BUS_H_ */