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| Current File : //compat/linux/proc/68247/root/compat/linux/proc/68247/root/sys/mips/mips/cache_mipsNN.c |
/* $NetBSD: cache_mipsNN.c,v 1.10 2005/12/24 20:07:19 perry Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe and Simon Burge for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/mips/mips/cache_mipsNN.c 224115 2011-07-16 20:31:29Z jchandra $");
#include "opt_cputype.h"
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/param.h>
#include <machine/cache.h>
#include <machine/cache_r4k.h>
#include <machine/cpuinfo.h>
#define round_line16(x) (((x) + 15) & ~15)
#define trunc_line16(x) ((x) & ~15)
#define round_line32(x) (((x) + 31) & ~31)
#define trunc_line32(x) ((x) & ~31)
#if defined(CPU_NLM)
static __inline void
xlp_sync(void)
{
__asm __volatile (
".set push \n"
".set noreorder \n"
".set mips64 \n"
"dla $8, 1f \n"
"/* jr.hb $8 */ \n"
".word 0x1000408 \n"
"nop \n"
"1: nop \n"
".set pop \n"
: : : "$8");
}
#endif
#if defined(SB1250_PASS1)
#define SYNC __asm volatile("sync; sync")
#elif defined(CPU_NLM)
#define SYNC xlp_sync()
#else
#define SYNC __asm volatile("sync")
#endif
#if defined(CPU_CNMIPS)
#define SYNCI mips_sync_icache();
#elif defined(CPU_NLM)
#define SYNCI xlp_sync()
#else
#define SYNCI
#endif
/*
* Exported variables for consumers like bus_dma code
*/
int mips_picache_linesize;
int mips_pdcache_linesize;
static int picache_size;
static int picache_stride;
static int picache_loopcount;
static int picache_way_mask;
static int pdcache_size;
static int pdcache_stride;
static int pdcache_loopcount;
static int pdcache_way_mask;
void
mipsNN_cache_init(struct mips_cpuinfo * cpuinfo)
{
int flush_multiple_lines_per_way;
flush_multiple_lines_per_way = cpuinfo->l1.ic_nsets * cpuinfo->l1.ic_linesize * cpuinfo->l1.ic_linesize > PAGE_SIZE;
if (cpuinfo->icache_virtual) {
/*
* With a virtual Icache we don't need to flush
* multiples of the page size with index ops; we just
* need to flush one pages' worth.
*/
flush_multiple_lines_per_way = 0;
}
if (flush_multiple_lines_per_way) {
picache_stride = PAGE_SIZE;
picache_loopcount = (cpuinfo->l1.ic_nsets * cpuinfo->l1.ic_linesize / PAGE_SIZE) *
cpuinfo->l1.ic_nways;
} else {
picache_stride = cpuinfo->l1.ic_nsets * cpuinfo->l1.ic_linesize;
picache_loopcount = cpuinfo->l1.ic_nways;
}
if (cpuinfo->l1.dc_nsets * cpuinfo->l1.dc_linesize < PAGE_SIZE) {
pdcache_stride = cpuinfo->l1.dc_nsets * cpuinfo->l1.dc_linesize;
pdcache_loopcount = cpuinfo->l1.dc_nways;
} else {
pdcache_stride = PAGE_SIZE;
pdcache_loopcount = (cpuinfo->l1.dc_nsets * cpuinfo->l1.dc_linesize / PAGE_SIZE) *
cpuinfo->l1.dc_nways;
}
mips_picache_linesize = cpuinfo->l1.ic_linesize;
mips_pdcache_linesize = cpuinfo->l1.dc_linesize;
picache_size = cpuinfo->l1.ic_size;
picache_way_mask = cpuinfo->l1.ic_nways - 1;
pdcache_size = cpuinfo->l1.dc_size;
pdcache_way_mask = cpuinfo->l1.dc_nways - 1;
#define CACHE_DEBUG
#ifdef CACHE_DEBUG
printf("Cache info:\n");
if (cpuinfo->icache_virtual)
printf(" icache is virtual\n");
printf(" picache_stride = %d\n", picache_stride);
printf(" picache_loopcount = %d\n", picache_loopcount);
printf(" pdcache_stride = %d\n", pdcache_stride);
printf(" pdcache_loopcount = %d\n", pdcache_loopcount);
#endif
}
void
mipsNN_icache_sync_all_16(void)
{
vm_offset_t va, eva;
va = MIPS_PHYS_TO_KSEG0(0);
eva = va + picache_size;
/*
* Since we're hitting the whole thing, we don't have to
* worry about the N different "ways".
*/
mips_intern_dcache_wbinv_all();
while (va < eva) {
cache_r4k_op_32lines_16(va, CACHE_R4K_I|CACHEOP_R4K_INDEX_INV);
va += (32 * 16);
}
SYNC;
}
void
mipsNN_icache_sync_all_32(void)
{
vm_offset_t va, eva;
va = MIPS_PHYS_TO_KSEG0(0);
eva = va + picache_size;
/*
* Since we're hitting the whole thing, we don't have to
* worry about the N different "ways".
*/
mips_intern_dcache_wbinv_all();
while (va < eva) {
cache_r4k_op_32lines_32(va, CACHE_R4K_I|CACHEOP_R4K_INDEX_INV);
va += (32 * 32);
}
SYNC;
}
void
mipsNN_icache_sync_range_16(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line16(va + size);
va = trunc_line16(va);
mips_intern_dcache_wb_range(va, (eva - va));
while ((eva - va) >= (32 * 16)) {
cache_r4k_op_32lines_16(va, CACHE_R4K_I|CACHEOP_R4K_HIT_INV);
va += (32 * 16);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_I|CACHEOP_R4K_HIT_INV);
va += 16;
}
SYNC;
}
void
mipsNN_icache_sync_range_32(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line32(va + size);
va = trunc_line32(va);
mips_intern_dcache_wb_range(va, (eva - va));
while ((eva - va) >= (32 * 32)) {
cache_r4k_op_32lines_32(va, CACHE_R4K_I|CACHEOP_R4K_HIT_INV);
va += (32 * 32);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_I|CACHEOP_R4K_HIT_INV);
va += 32;
}
SYNC;
}
void
mipsNN_icache_sync_range_index_16(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva, tmpva;
int i, stride, loopcount;
/*
* Since we're doing Index ops, we expect to not be able
* to access the address we've been given. So, get the
* bits that determine the cache index, and make a KSEG0
* address out of them.
*/
va = MIPS_PHYS_TO_KSEG0(va & picache_way_mask);
eva = round_line16(va + size);
va = trunc_line16(va);
/*
* GCC generates better code in the loops if we reference local
* copies of these global variables.
*/
stride = picache_stride;
loopcount = picache_loopcount;
mips_intern_dcache_wbinv_range_index(va, (eva - va));
while ((eva - va) >= (8 * 16)) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_r4k_op_8lines_16(tmpva,
CACHE_R4K_I|CACHEOP_R4K_INDEX_INV);
va += 8 * 16;
}
while (va < eva) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_op_r4k_line(tmpva,
CACHE_R4K_I|CACHEOP_R4K_INDEX_INV);
va += 16;
}
}
void
mipsNN_icache_sync_range_index_32(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva, tmpva;
int i, stride, loopcount;
/*
* Since we're doing Index ops, we expect to not be able
* to access the address we've been given. So, get the
* bits that determine the cache index, and make a KSEG0
* address out of them.
*/
va = MIPS_PHYS_TO_KSEG0(va & picache_way_mask);
eva = round_line32(va + size);
va = trunc_line32(va);
/*
* GCC generates better code in the loops if we reference local
* copies of these global variables.
*/
stride = picache_stride;
loopcount = picache_loopcount;
mips_intern_dcache_wbinv_range_index(va, (eva - va));
while ((eva - va) >= (8 * 32)) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_r4k_op_8lines_32(tmpva,
CACHE_R4K_I|CACHEOP_R4K_INDEX_INV);
va += 8 * 32;
}
while (va < eva) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_op_r4k_line(tmpva,
CACHE_R4K_I|CACHEOP_R4K_INDEX_INV);
va += 32;
}
}
void
mipsNN_pdcache_wbinv_all_16(void)
{
vm_offset_t va, eva;
va = MIPS_PHYS_TO_KSEG0(0);
eva = va + pdcache_size;
/*
* Since we're hitting the whole thing, we don't have to
* worry about the N different "ways".
*/
while (va < eva) {
cache_r4k_op_32lines_16(va,
CACHE_R4K_D|CACHEOP_R4K_INDEX_WB_INV);
va += (32 * 16);
}
SYNC;
}
void
mipsNN_pdcache_wbinv_all_32(void)
{
vm_offset_t va, eva;
va = MIPS_PHYS_TO_KSEG0(0);
eva = va + pdcache_size;
/*
* Since we're hitting the whole thing, we don't have to
* worry about the N different "ways".
*/
while (va < eva) {
cache_r4k_op_32lines_32(va,
CACHE_R4K_D|CACHEOP_R4K_INDEX_WB_INV);
va += (32 * 32);
}
SYNC;
}
void
mipsNN_pdcache_wbinv_range_16(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line16(va + size);
va = trunc_line16(va);
while ((eva - va) >= (32 * 16)) {
cache_r4k_op_32lines_16(va,
CACHE_R4K_D|CACHEOP_R4K_HIT_WB_INV);
va += (32 * 16);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB_INV);
va += 16;
}
SYNC;
}
void
mipsNN_pdcache_wbinv_range_32(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line32(va + size);
va = trunc_line32(va);
while ((eva - va) >= (32 * 32)) {
cache_r4k_op_32lines_32(va,
CACHE_R4K_D|CACHEOP_R4K_HIT_WB_INV);
va += (32 * 32);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB_INV);
va += 32;
}
SYNC;
}
void
mipsNN_pdcache_wbinv_range_index_16(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva, tmpva;
int i, stride, loopcount;
/*
* Since we're doing Index ops, we expect to not be able
* to access the address we've been given. So, get the
* bits that determine the cache index, and make a KSEG0
* address out of them.
*/
va = MIPS_PHYS_TO_KSEG0(va & pdcache_way_mask);
eva = round_line16(va + size);
va = trunc_line16(va);
/*
* GCC generates better code in the loops if we reference local
* copies of these global variables.
*/
stride = pdcache_stride;
loopcount = pdcache_loopcount;
while ((eva - va) >= (8 * 16)) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_r4k_op_8lines_16(tmpva,
CACHE_R4K_D|CACHEOP_R4K_INDEX_WB_INV);
va += 8 * 16;
}
while (va < eva) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_op_r4k_line(tmpva,
CACHE_R4K_D|CACHEOP_R4K_INDEX_WB_INV);
va += 16;
}
}
void
mipsNN_pdcache_wbinv_range_index_32(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva, tmpva;
int i, stride, loopcount;
/*
* Since we're doing Index ops, we expect to not be able
* to access the address we've been given. So, get the
* bits that determine the cache index, and make a KSEG0
* address out of them.
*/
va = MIPS_PHYS_TO_KSEG0(va & pdcache_way_mask);
eva = round_line32(va + size);
va = trunc_line32(va);
/*
* GCC generates better code in the loops if we reference local
* copies of these global variables.
*/
stride = pdcache_stride;
loopcount = pdcache_loopcount;
while ((eva - va) >= (8 * 32)) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_r4k_op_8lines_32(tmpva,
CACHE_R4K_D|CACHEOP_R4K_INDEX_WB_INV);
va += 8 * 32;
}
while (va < eva) {
tmpva = va;
for (i = 0; i < loopcount; i++, tmpva += stride)
cache_op_r4k_line(tmpva,
CACHE_R4K_D|CACHEOP_R4K_INDEX_WB_INV);
va += 32;
}
}
void
mipsNN_pdcache_inv_range_16(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line16(va + size);
va = trunc_line16(va);
while ((eva - va) >= (32 * 16)) {
cache_r4k_op_32lines_16(va, CACHE_R4K_D|CACHEOP_R4K_HIT_INV);
va += (32 * 16);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_INV);
va += 16;
}
SYNC;
}
void
mipsNN_pdcache_inv_range_32(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line32(va + size);
va = trunc_line32(va);
while ((eva - va) >= (32 * 32)) {
cache_r4k_op_32lines_32(va, CACHE_R4K_D|CACHEOP_R4K_HIT_INV);
va += (32 * 32);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_INV);
va += 32;
}
SYNC;
}
void
mipsNN_pdcache_wb_range_16(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line16(va + size);
va = trunc_line16(va);
while ((eva - va) >= (32 * 16)) {
cache_r4k_op_32lines_16(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB);
va += (32 * 16);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB);
va += 16;
}
SYNC;
}
void
mipsNN_pdcache_wb_range_32(vm_offset_t va, vm_size_t size)
{
vm_offset_t eva;
eva = round_line32(va + size);
va = trunc_line32(va);
while ((eva - va) >= (32 * 32)) {
cache_r4k_op_32lines_32(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB);
va += (32 * 32);
}
while (va < eva) {
cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB);
va += 32;
}
SYNC;
}
#ifdef CPU_CNMIPS
void
mipsNN_icache_sync_all_128(void)
{
SYNCI
}
void
mipsNN_icache_sync_range_128(vm_offset_t va, vm_size_t size)
{
SYNC;
}
void
mipsNN_icache_sync_range_index_128(vm_offset_t va, vm_size_t size)
{
}
void
mipsNN_pdcache_wbinv_all_128(void)
{
}
void
mipsNN_pdcache_wbinv_range_128(vm_offset_t va, vm_size_t size)
{
SYNC;
}
void
mipsNN_pdcache_wbinv_range_index_128(vm_offset_t va, vm_size_t size)
{
}
void
mipsNN_pdcache_inv_range_128(vm_offset_t va, vm_size_t size)
{
}
void
mipsNN_pdcache_wb_range_128(vm_offset_t va, vm_size_t size)
{
SYNC;
}
#endif