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| Current File : //sys/mips/mips/bus_space_generic.c |
/* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */
/*-
* $Id: bus.h,v 1.6 2007/08/09 11:23:32 katta Exp $
*
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
/*
* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
* Copyright (c) 1996 Christopher G. Demetriou. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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.
*
* from: src/sys/alpha/include/bus.h,v 1.5 1999/08/28 00:38:40 peter
* $FreeBSD: release/9.1.0/sys/mips/mips/bus_space_generic.c 210311 2010-07-20 19:25:11Z jmallett $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/mips/mips/bus_space_generic.c 210311 2010-07-20 19:25:11Z jmallett $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/ktr.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_kern.h>
#include <vm/vm_extern.h>
#include <machine/bus.h>
#include <machine/cache.h>
static struct bus_space generic_space = {
/* cookie */
(void *) 0,
/* mapping/unmapping */
generic_bs_map,
generic_bs_unmap,
generic_bs_subregion,
/* allocation/deallocation */
NULL,
NULL,
/* barrier */
generic_bs_barrier,
/* read (single) */
generic_bs_r_1,
generic_bs_r_2,
generic_bs_r_4,
NULL,
/* read multiple */
generic_bs_rm_1,
generic_bs_rm_2,
generic_bs_rm_4,
NULL,
/* read region */
generic_bs_rr_1,
generic_bs_rr_2,
generic_bs_rr_4,
NULL,
/* write (single) */
generic_bs_w_1,
generic_bs_w_2,
generic_bs_w_4,
NULL,
/* write multiple */
generic_bs_wm_1,
generic_bs_wm_2,
generic_bs_wm_4,
NULL,
/* write region */
NULL,
generic_bs_wr_2,
generic_bs_wr_4,
NULL,
/* set multiple */
NULL,
NULL,
NULL,
NULL,
/* set region */
NULL,
generic_bs_sr_2,
generic_bs_sr_4,
NULL,
/* copy */
NULL,
generic_bs_c_2,
NULL,
NULL,
/* read (single) stream */
generic_bs_r_1,
generic_bs_r_2,
generic_bs_r_4,
NULL,
/* read multiple stream */
generic_bs_rm_1,
generic_bs_rm_2,
generic_bs_rm_4,
NULL,
/* read region stream */
generic_bs_rr_1,
generic_bs_rr_2,
generic_bs_rr_4,
NULL,
/* write (single) stream */
generic_bs_w_1,
generic_bs_w_2,
generic_bs_w_4,
NULL,
/* write multiple stream */
generic_bs_wm_1,
generic_bs_wm_2,
generic_bs_wm_4,
NULL,
/* write region stream */
NULL,
generic_bs_wr_2,
generic_bs_wr_4,
NULL,
};
/* Ultra-gross kludge */
#include "opt_cputype.h"
#if defined(CPU_CNMIPS) && (defined(__mips_n32) || defined(__mips_o32))
#include <contrib/octeon-sdk/cvmx.h>
#define rd8(a) cvmx_read64_uint8(a)
#define rd16(a) cvmx_read64_uint16(a)
#define rd32(a) cvmx_read64_uint32(a)
#define wr8(a, v) cvmx_write64_uint8(a, v)
#define wr16(a, v) cvmx_write64_uint16(a, v)
#define wr32(a, v) cvmx_write64_uint32(a, v)
#elif defined(CPU_SB1) && _BYTE_ORDER == _BIG_ENDIAN
#include <mips/sibyte/sb_bus_space.h>
#define rd8(a) sb_big_endian_read8(a)
#define rd16(a) sb_big_endian_read16(a)
#define rd32(a) sb_big_endian_read32(a)
#define wr8(a, v) sb_big_endian_write8(a, v)
#define wr16(a, v) sb_big_endian_write16(a, v)
#define wr32(a, v) sb_big_endian_write32(a, v)
#else
#define rd8(a) readb(a)
#define rd16(a) readw(a)
#define rd32(a) readl(a)
#define wr8(a, v) writeb(a, v)
#define wr16(a, v) writew(a, v)
#define wr32(a, v) writel(a, v)
#endif
/* generic bus_space tag */
bus_space_tag_t mips_bus_space_generic = &generic_space;
int
generic_bs_map(void *t __unused, bus_addr_t addr,
bus_size_t size __unused, int flags __unused,
bus_space_handle_t *bshp)
{
*bshp = addr;
return (0);
}
void
generic_bs_unmap(void *t __unused, bus_space_handle_t bh __unused,
bus_size_t size __unused)
{
/* Do nothing */
}
int
generic_bs_subregion(void *t __unused, bus_space_handle_t handle __unused,
bus_size_t offset __unused, bus_size_t size __unused,
bus_space_handle_t *nhandle __unused)
{
printf("SUBREGION?!?!?!\n");
/* Do nothing */
return (0);
}
uint8_t
generic_bs_r_1(void *t, bus_space_handle_t handle,
bus_size_t offset)
{
return (rd8(handle + offset));
}
uint16_t
generic_bs_r_2(void *t, bus_space_handle_t handle,
bus_size_t offset)
{
return (rd16(handle + offset));
}
uint32_t
generic_bs_r_4(void *t, bus_space_handle_t handle,
bus_size_t offset)
{
return (rd32(handle + offset));
}
void
generic_bs_rm_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t *addr, size_t count)
{
while (count--)
*addr++ = rd8(bsh + offset);
}
void
generic_bs_rm_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--)
*addr++ = rd16(baddr);
}
void
generic_bs_rm_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--)
*addr++ = rd32(baddr);
}
/*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle and starting at `offset' and copy into
* buffer provided.
*/
void
generic_bs_rr_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--) {
*addr++ = rd8(baddr);
baddr += 1;
}
}
void
generic_bs_rr_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--) {
*addr++ = rd16(baddr);
baddr += 2;
}
}
void
generic_bs_rr_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--) {
*addr++ = rd32(baddr);
baddr += 4;
}
}
/*
* Write the 1, 2, 4, or 8 byte value `value' to bus space
* described by tag/handle/offset.
*/
void
generic_bs_w_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t value)
{
wr8(bsh + offset, value);
}
void
generic_bs_w_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t value)
{
wr16(bsh + offset, value);
}
void
generic_bs_w_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t value)
{
wr32(bsh + offset, value);
}
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
* provided to bus space described by tag/handle/offset.
*/
void
generic_bs_wm_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, const uint8_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--)
wr8(baddr, *addr++);
}
void
generic_bs_wm_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, const uint16_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--)
wr16(baddr, *addr++);
}
void
generic_bs_wm_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, const uint32_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--)
wr32(baddr, *addr++);
}
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
* to bus space described by tag/handle starting at `offset'.
*/
void
generic_bs_wr_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, const uint8_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--) {
wr8(baddr, *addr++);
baddr += 1;
}
}
void
generic_bs_wr_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, const uint16_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--) {
wr16(baddr, *addr++);
baddr += 2;
}
}
void
generic_bs_wr_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, const uint32_t *addr, size_t count)
{
bus_addr_t baddr = bsh + offset;
while (count--) {
wr32(baddr, *addr++);
baddr += 4;
}
}
/*
* Write the 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle/offset `count' times.
*/
void
generic_bs_sm_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t value, size_t count)
{
bus_addr_t addr = bsh + offset;
while (count--)
wr8(addr, value);
}
void
generic_bs_sm_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t value, size_t count)
{
bus_addr_t addr = bsh + offset;
while (count--)
wr16(addr, value);
}
void
generic_bs_sm_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t value, size_t count)
{
bus_addr_t addr = bsh + offset;
while (count--)
wr32(addr, value);
}
/*
* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle starting at `offset'.
*/
void
generic_bs_sr_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t value, size_t count)
{
bus_addr_t addr = bsh + offset;
for (; count != 0; count--, addr++)
wr8(addr, value);
}
void
generic_bs_sr_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t value, size_t count)
{
bus_addr_t addr = bsh + offset;
for (; count != 0; count--, addr += 2)
wr16(addr, value);
}
void
generic_bs_sr_4(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t value, size_t count)
{
bus_addr_t addr = bsh + offset;
for (; count != 0; count--, addr += 4)
wr32(addr, value);
}
/*
* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
*/
void
generic_bs_c_1(void *t, bus_space_handle_t bsh1,
bus_size_t off1, bus_space_handle_t bsh2,
bus_size_t off2, size_t count)
{
bus_addr_t addr1 = bsh1 + off1;
bus_addr_t addr2 = bsh2 + off2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1++, addr2++)
wr8(addr2, rd8(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += (count - 1), addr2 += (count - 1);
count != 0; count--, addr1--, addr2--)
wr8(addr2, rd8(addr1));
}
}
void
generic_bs_c_2(void *t, bus_space_handle_t bsh1,
bus_size_t off1, bus_space_handle_t bsh2,
bus_size_t off2, size_t count)
{
bus_addr_t addr1 = bsh1 + off1;
bus_addr_t addr2 = bsh2 + off2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 2, addr2 += 2)
wr16(addr2, rd16(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
count != 0; count--, addr1 -= 2, addr2 -= 2)
wr16(addr2, rd16(addr1));
}
}
void
generic_bs_c_4(void *t, bus_space_handle_t bsh1,
bus_size_t off1, bus_space_handle_t bsh2,
bus_size_t off2, size_t count)
{
bus_addr_t addr1 = bsh1 + off1;
bus_addr_t addr2 = bsh2 + off2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 4, addr2 += 4)
wr32(addr2, rd32(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
count != 0; count--, addr1 -= 4, addr2 -= 4)
wr32(addr2, rd32(addr1));
}
}
void
generic_bs_barrier(void *t __unused,
bus_space_handle_t bsh __unused,
bus_size_t offset __unused, bus_size_t len __unused,
int flags)
{
#if 0
if (flags & BUS_SPACE_BARRIER_WRITE)
mips_dcache_wbinv_all();
#endif
}