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MIPS: unify cache maintenance functions 

Move the more developed mips32 version of the cache maintenance
functions to a common arch/mips/lib/cache.c, in order to reduce
duplication between mips32 & mips64.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Paul Burton 2015-01-29 01:27:57 +00:00 committed by Daniel Schwierzeck
parent 2b8bcc5a2f
commit 30374f98d1
4 changed files with 119 additions and 167 deletions
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109
arch/mips/cpu/mips32/cpu.c
View File

@ -9,7 +9,6 @@
#include <command.h>
#include <netdev.h>
#include <asm/mipsregs.h>
#include <asm/cacheops.h>
#include <asm/reboot.h>
void __attribute__((weak)) _machine_restart(void)
@ -24,114 +23,6 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return 0;
}
#ifdef CONFIG_SYS_CACHELINE_SIZE
static inline unsigned long icache_line_size(void)
{
return CONFIG_SYS_CACHELINE_SIZE;
}
static inline unsigned long dcache_line_size(void)
{
return CONFIG_SYS_CACHELINE_SIZE;
}
#else /* !CONFIG_SYS_CACHELINE_SIZE */
static inline unsigned long icache_line_size(void)
{
unsigned long conf1, il;
conf1 = read_c0_config1();
il = (conf1 & MIPS_CONF1_IL) >> MIPS_CONF1_IL_SHIFT;
if (!il)
return 0;
return 2 << il;
}
static inline unsigned long dcache_line_size(void)
{
unsigned long conf1, dl;
conf1 = read_c0_config1();
dl = (conf1 & MIPS_CONF1_DL) >> MIPS_CONF1_DL_SHIFT;
if (!dl)
return 0;
return 2 << dl;
}
#endif /* !CONFIG_SYS_CACHELINE_SIZE */
void flush_cache(ulong start_addr, ulong size)
{
unsigned long ilsize = icache_line_size();
unsigned long dlsize = dcache_line_size();
const void *addr, *aend;
/* aend will be miscalculated when size is zero, so we return here */
if (size == 0)
return;
addr = (const void *)(start_addr & ~(dlsize - 1));
aend = (const void *)((start_addr + size - 1) & ~(dlsize - 1));
if (ilsize == dlsize) {
/* flush I-cache & D-cache simultaneously */
while (1) {
mips_cache(HIT_WRITEBACK_INV_D, addr);
mips_cache(HIT_INVALIDATE_I, addr);
if (addr == aend)
break;
addr += dlsize;
}
return;
}
/* flush D-cache */
while (1) {
mips_cache(HIT_WRITEBACK_INV_D, addr);
if (addr == aend)
break;
addr += dlsize;
}
/* flush I-cache */
addr = (const void *)(start_addr & ~(ilsize - 1));
aend = (const void *)((start_addr + size - 1) & ~(ilsize - 1));
while (1) {
mips_cache(HIT_INVALIDATE_I, addr);
if (addr == aend)
break;
addr += ilsize;
}
}
void flush_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = dcache_line_size();
const void *addr = (const void *)(start_addr & ~(lsize - 1));
const void *aend = (const void *)((stop - 1) & ~(lsize - 1));
while (1) {
mips_cache(HIT_WRITEBACK_INV_D, addr);
if (addr == aend)
break;
addr += lsize;
}
}
void invalidate_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = dcache_line_size();
const void *addr = (const void *)(start_addr & ~(lsize - 1));
const void *aend = (const void *)((stop - 1) & ~(lsize - 1));
while (1) {
mips_cache(HIT_INVALIDATE_D, addr);
if (addr == aend)
break;
addr += lsize;
}
}
void write_one_tlb(int index, u32 pagemask, u32 hi, u32 low0, u32 low1)
{
write_c0_entrylo0(low0);

58
arch/mips/cpu/mips64/cpu.c
View File

@ -9,19 +9,8 @@
#include <command.h>
#include <netdev.h>
#include <asm/mipsregs.h>
#include <asm/cacheops.h>
#include <asm/reboot.h>
#define cache_op(op, addr) \
__asm__ __volatile__( \
" .set push\n" \
" .set noreorder\n" \
" .set mips64\n" \
" cache %0, %1\n" \
" .set pop\n" \
: \
: "i" (op), "R" (*(unsigned char *)(addr)))
void __attribute__((weak)) _machine_restart(void)
{
fprintf(stderr, "*** reset failed ***\n");
@ -37,53 +26,6 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return 0;
}
void flush_cache(ulong start_addr, ulong size)
{
unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
unsigned long addr = start_addr & ~(lsize - 1);
unsigned long aend = (start_addr + size - 1) & ~(lsize - 1);
/* aend will be miscalculated when size is zero, so we return here */
if (size == 0)
return;
while (1) {
cache_op(HIT_WRITEBACK_INV_D, addr);
cache_op(HIT_INVALIDATE_I, addr);
if (addr == aend)
break;
addr += lsize;
}
}
void flush_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
unsigned long addr = start_addr & ~(lsize - 1);
unsigned long aend = (stop - 1) & ~(lsize - 1);
while (1) {
cache_op(HIT_WRITEBACK_INV_D, addr);
if (addr == aend)
break;
addr += lsize;
}
}
void invalidate_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
unsigned long addr = start_addr & ~(lsize - 1);
unsigned long aend = (stop - 1) & ~(lsize - 1);
while (1) {
cache_op(HIT_INVALIDATE_D, addr);
if (addr == aend)
break;
addr += lsize;
}
}
void write_one_tlb(int index, u32 pagemask, u32 hi, u32 low0, u32 low1)
{
write_c0_entrylo0(low0);

1
arch/mips/lib/Makefile
View File

@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-y += cache.o
obj-y += io.o
obj-$(CONFIG_CMD_BOOTM) += bootm.o

118
arch/mips/lib/cache.c Normal file
View File

@ -0,0 +1,118 @@
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/cacheops.h>
#include <asm/mipsregs.h>
#ifdef CONFIG_SYS_CACHELINE_SIZE
static inline unsigned long icache_line_size(void)
{
return CONFIG_SYS_CACHELINE_SIZE;
}
static inline unsigned long dcache_line_size(void)
{
return CONFIG_SYS_CACHELINE_SIZE;
}
#else /* !CONFIG_SYS_CACHELINE_SIZE */
static inline unsigned long icache_line_size(void)
{
unsigned long conf1, il;
conf1 = read_c0_config1();
il = (conf1 & MIPS_CONF1_IL) >> MIPS_CONF1_IL_SHIFT;
if (!il)
return 0;
return 2 << il;
}
static inline unsigned long dcache_line_size(void)
{
unsigned long conf1, dl;
conf1 = read_c0_config1();
dl = (conf1 & MIPS_CONF1_DL) >> MIPS_CONF1_DL_SHIFT;
if (!dl)
return 0;
return 2 << dl;
}
#endif /* !CONFIG_SYS_CACHELINE_SIZE */
void flush_cache(ulong start_addr, ulong size)
{
unsigned long ilsize = icache_line_size();
unsigned long dlsize = dcache_line_size();
const void *addr, *aend;
/* aend will be miscalculated when size is zero, so we return here */
if (size == 0)
return;
addr = (const void *)(start_addr & ~(dlsize - 1));
aend = (const void *)((start_addr + size - 1) & ~(dlsize - 1));
if (ilsize == dlsize) {
/* flush I-cache & D-cache simultaneously */
while (1) {
mips_cache(HIT_WRITEBACK_INV_D, addr);
mips_cache(HIT_INVALIDATE_I, addr);
if (addr == aend)
break;
addr += dlsize;
}
return;
}
/* flush D-cache */
while (1) {
mips_cache(HIT_WRITEBACK_INV_D, addr);
if (addr == aend)
break;
addr += dlsize;
}
/* flush I-cache */
addr = (const void *)(start_addr & ~(ilsize - 1));
aend = (const void *)((start_addr + size - 1) & ~(ilsize - 1));
while (1) {
mips_cache(HIT_INVALIDATE_I, addr);
if (addr == aend)
break;
addr += ilsize;
}
}
void flush_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = dcache_line_size();
const void *addr = (const void *)(start_addr & ~(lsize - 1));
const void *aend = (const void *)((stop - 1) & ~(lsize - 1));
while (1) {
mips_cache(HIT_WRITEBACK_INV_D, addr);
if (addr == aend)
break;
addr += lsize;
}
}
void invalidate_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = dcache_line_size();
const void *addr = (const void *)(start_addr & ~(lsize - 1));
const void *aend = (const void *)((stop - 1) & ~(lsize - 1));
while (1) {
mips_cache(HIT_INVALIDATE_D, addr);
if (addr == aend)
break;
addr += lsize;
}
}