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/*
* Copyright 2021 Intel Corporation
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_ARCH_XTENSA_CACHE_H_
#define ZEPHYR_INCLUDE_ARCH_XTENSA_CACHE_H_
#include <xtensa/config/core-isa.h>
#include <zephyr/toolchain.h>
#include <zephyr/sys/util.h>
#include <zephyr/debug/sparse.h>
#include <xtensa/hal.h>
#ifdef __cplusplus
extern "C" {
#endif
#define Z_DCACHE_MAX (XCHAL_DCACHE_SIZE / XCHAL_DCACHE_WAYS)
#if XCHAL_DCACHE_SIZE
BUILD_ASSERT(Z_IS_POW2(XCHAL_DCACHE_LINESIZE));
BUILD_ASSERT(Z_IS_POW2(Z_DCACHE_MAX));
#endif
#if defined(CONFIG_DCACHE)
static ALWAYS_INLINE int arch_dcache_flush_range(void *addr, size_t bytes)
{
#if XCHAL_DCACHE_SIZE
size_t step = XCHAL_DCACHE_LINESIZE;
size_t first = ROUND_DOWN(addr, step);
size_t last = ROUND_UP(((long)addr) + bytes, step);
size_t line;
for (line = first; bytes && line < last; line += step) {
__asm__ volatile("dhwb %0, 0" :: "r"(line));
}
#endif
return 0;
}
static ALWAYS_INLINE int arch_dcache_flush_and_invd_range(void *addr, size_t bytes)
{
#if XCHAL_DCACHE_SIZE
size_t step = XCHAL_DCACHE_LINESIZE;
size_t first = ROUND_DOWN(addr, step);
size_t last = ROUND_UP(((long)addr) + bytes, step);
size_t line;
for (line = first; bytes && line < last; line += step) {
__asm__ volatile("dhwbi %0, 0" :: "r"(line));
}
#endif
return 0;
}
static ALWAYS_INLINE int arch_dcache_invd_range(void *addr, size_t bytes)
{
#if XCHAL_DCACHE_SIZE
size_t step = XCHAL_DCACHE_LINESIZE;
size_t first = ROUND_DOWN(addr, step);
size_t last = ROUND_UP(((long)addr) + bytes, step);
size_t line;
for (line = first; bytes && line < last; line += step) {
__asm__ volatile("dhi %0, 0" :: "r"(line));
}
#endif
return 0;
}
static ALWAYS_INLINE int arch_dcache_invd_all(void)
{
#if XCHAL_DCACHE_SIZE
size_t step = XCHAL_DCACHE_LINESIZE;
size_t line;
for (line = 0; line < XCHAL_DCACHE_SIZE; line += step) {
__asm__ volatile("dii %0, 0" :: "r"(line));
}
#endif
return 0;
}
static ALWAYS_INLINE int arch_dcache_flush_all(void)
{
#if XCHAL_DCACHE_SIZE
size_t step = XCHAL_DCACHE_LINESIZE;
size_t line;
for (line = 0; line < XCHAL_DCACHE_SIZE; line += step) {
__asm__ volatile("diwb %0, 0" :: "r"(line));
}
#endif
return 0;
}
static ALWAYS_INLINE int arch_dcache_flush_and_invd_all(void)
{
#if XCHAL_DCACHE_SIZE
size_t step = XCHAL_DCACHE_LINESIZE;
size_t line;
for (line = 0; line < XCHAL_DCACHE_SIZE; line += step) {
__asm__ volatile("diwbi %0, 0" :: "r"(line));
}
#endif
return 0;
}
static ALWAYS_INLINE void arch_dcache_enable(void)
{
/* nothing */
}
static ALWAYS_INLINE void arch_dcache_disable(void)
{
/* nothing */
}
#endif /* CONFIG_DCACHE */
#if defined(CONFIG_ICACHE)
static size_t arch_icache_line_size_get(void)
{
return -ENOTSUP;
}
static ALWAYS_INLINE int arch_icache_flush_all(void)
{
#if XCHAL_ICACHE_SIZE
xthal_icache_all_writeback();
#endif
return 0;
}
static ALWAYS_INLINE int arch_icache_invd_all(void)
{
#if XCHAL_ICACHE_SIZE
xthal_icache_all_invalidate();
#endif
return 0;
}
static ALWAYS_INLINE int arch_icache_flush_and_invd_all(void)
{
return -ENOTSUP;
}
static ALWAYS_INLINE int arch_icache_flush_range(void *addr, size_t size)
{
return -ENOTSUP;
}
static ALWAYS_INLINE int arch_icache_invd_range(void *addr, size_t size)
{
#if XCHAL_ICACHE_SIZE
xthal_icache_region_invalidate(addr, size);
#endif
return 0;
}
static ALWAYS_INLINE int arch_icache_flush_and_invd_range(void *addr, size_t size)
{
return -ENOTSUP;
}
static ALWAYS_INLINE void arch_icache_enable(void)
{
/* nothing */
}
static ALWAYS_INLINE vid arch_icache_disable(void)
{
/* nothing */
}
#endif /* CONFIG_ICACHE */
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* ZEPHYR_INCLUDE_ARCH_XTENSA_CACHE_H_ */