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freebsd-nq/sys/mips/cavium/octopci_bus_space.c

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Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
/* $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.
*
* 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
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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 <sys/endian.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>
#include <mips/cavium/octopcivar.h>
#include <contrib/octeon-sdk/cvmx.h>
static struct bus_space octopci_space = {
/* cookie */
(void *) 0,
/* mapping/unmapping */
octopci_bs_map,
octopci_bs_unmap,
octopci_bs_subregion,
/* allocation/deallocation */
NULL,
NULL,
/* barrier */
octopci_bs_barrier,
/* read (single) */
octopci_bs_r_1,
octopci_bs_r_2,
octopci_bs_r_4,
NULL,
/* read multiple */
octopci_bs_rm_1,
octopci_bs_rm_2,
octopci_bs_rm_4,
NULL,
/* read region */
octopci_bs_rr_1,
octopci_bs_rr_2,
octopci_bs_rr_4,
NULL,
/* write (single) */
octopci_bs_w_1,
octopci_bs_w_2,
octopci_bs_w_4,
NULL,
/* write multiple */
octopci_bs_wm_1,
octopci_bs_wm_2,
octopci_bs_wm_4,
NULL,
/* write region */
NULL,
octopci_bs_wr_2,
octopci_bs_wr_4,
NULL,
/* set multiple */
NULL,
NULL,
NULL,
NULL,
/* set region */
NULL,
octopci_bs_sr_2,
octopci_bs_sr_4,
NULL,
/* copy */
NULL,
octopci_bs_c_2,
NULL,
NULL,
/* read (single) stream */
octopci_bs_r_1,
octopci_bs_r_2,
octopci_bs_r_4,
NULL,
/* read multiple stream */
octopci_bs_rm_1,
octopci_bs_rm_2,
octopci_bs_rm_4,
NULL,
/* read region stream */
octopci_bs_rr_1,
octopci_bs_rr_2,
octopci_bs_rr_4,
NULL,
/* write (single) stream */
octopci_bs_w_1,
octopci_bs_w_2,
octopci_bs_w_4,
NULL,
/* write multiple stream */
octopci_bs_wm_1,
octopci_bs_wm_2,
octopci_bs_wm_4,
NULL,
/* write region stream */
NULL,
octopci_bs_wr_2,
octopci_bs_wr_4,
NULL,
};
#define rd8(a) cvmx_read64_uint8(a)
#define rd16(a) le16toh(cvmx_read64_uint16(a))
#define rd32(a) le32toh(cvmx_read64_uint32(a))
#define wr8(a, v) cvmx_write64_uint8(a, v)
#define wr16(a, v) cvmx_write64_uint16(a, htole16(v))
#define wr32(a, v) cvmx_write64_uint32(a, htole32(v))
/* octopci bus_space tag */
bus_space_tag_t octopci_bus_space = &octopci_space;
int
octopci_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
octopci_bs_unmap(void *t __unused, bus_space_handle_t bh __unused,
bus_size_t size __unused)
{
/* Do nothing */
}
int
When creating a handle for a subregion, be sure to actually math out the new handle address, where we're using handles as raw addresses. This fixes devices with subregions on Octeon PCI specifically, and likely also on MIPS more generally, where there isn't another bus_space in use that was doing the math already.
2012-03-02 21:46:31 +00:00
octopci_bs_subregion(void *t __unused, bus_space_handle_t handle,
bus_size_t offset, bus_size_t size __unused,
bus_space_handle_t *bshp)
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
{
When creating a handle for a subregion, be sure to actually math out the new handle address, where we're using handles as raw addresses. This fixes devices with subregions on Octeon PCI specifically, and likely also on MIPS more generally, where there isn't another bus_space in use that was doing the math already.
2012-03-02 21:46:31 +00:00
*bshp = handle + offset;
Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive library: o) Increase inline unit / large function growth limits for MIPS to accommodate the needs of the Simple Executive, which uses a shocking amount of inlining. o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and the Octeon SoC. o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific board numbers, specifically to support the MR320. o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd, which improperly uses an evaluation board's board number and breaks board detection at runtime. This board is sold by Portwell as the CAM-0100. o) Add support for the RTC available on some Octeon boards. o) Add support for the Octeon PCI bus. Note that rman_[sg]et_virtual for IO ports can not work unless building for n64. o) Clean up the CompactFlash driver to use Simple Executive macros and structures where possible (it would be advisable to use the Simple Executive API to set the PIO mode, too, but that is not done presently.) Also use structures from FreeBSD's ATA layer rather than structures copied from Linux. o) Print available Octeon SoC features on boot. o) Add support for the Octeon timecounter. o) Use the Simple Executive's routines rather than local copies for doing reads and writes to 64-bit addresses and use its macros for various device addresses rather than using local copies. o) Rename octeon_board_real to octeon_is_simulation to reduce differences with Cavium-provided code originally written for Linux. Also make it use the same simplified test that the Simple Executive and Linux both use rather than our complex one. o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus to use normal interrupt allocation and setup routines. o) Use the Simple Executive's bootmem facility to allocate physical memory for the kernel, rather than assuming we know which addresses we can steal. NB: This may reduce the amount of RAM the kernel reports you as having if you are leaving large temporary allocations made by U-Boot allocated when starting FreeBSD. o) Add a port of the Cavium-provided Ethernet driver for Linux. This changes Ethernet interface naming from rgmxN to octeN. The new driver has vast improvements over the old one, both in performance and functionality, but does still have some features which have not been ported entirely and there may be unimplemented code that can be hit in everyday use. I will make every effort to correct those as they are reported. o) Support loading the kernel on non-contiguous cores. o) Add very conservative support for harvesting randomness from the Octeon random number device. o) Turn SMP on by default. o) Clean up the style of the Octeon kernel configurations a little and make them compile with -march=octeon. o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple Executive. o) Modify the Simple Executive to build on FreeBSD and to build without executive-config.h or cvmx-config.h. In the future we may want to revert part of these changes and supply executive-config.h and cvmx-config.h and access to the options contained in those files via kernel configuration files. o) Modify the Simple Executive USB routines to support getting and setting of the USB PID.
2010-07-20 19:25:11 +00:00
return (0);
}
uint8_t
octopci_bs_r_1(void *t, bus_space_handle_t handle,
bus_size_t offset)
{
return (rd8(handle + offset));
}
uint16_t
octopci_bs_r_2(void *t, bus_space_handle_t handle,
bus_size_t offset)
{
return (rd16(handle + offset));
}
uint32_t
octopci_bs_r_4(void *t, bus_space_handle_t handle,
bus_size_t offset)
{
return (rd32(handle + offset));
}
void
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_bs_w_1(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t value)
{
wr8(bsh + offset, value);
}
void
octopci_bs_w_2(void *t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t value)
{
wr16(bsh + offset, value);
}
void
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
octopci_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
}
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