mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-01-02 18:10:17 +01:00
3739d7a90c
Fixes: 555881e574 ("util/cache_ops: Add some cache flush helpers")
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37958>
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
|
|
* Copyright © 2025 Collabora Ltd.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef UTIL_CACHE_OPS_H
|
|
#define UTIL_CACHE_OPS_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
|
|
#include "detect_arch.h"
|
|
#include "u_cpu_detect.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/** Returns true if we have cache operations available */
|
|
static inline bool
|
|
util_has_cache_ops(void)
|
|
{
|
|
/* TODO: Port to MSVC if and when we have Windows hardware drivers that
|
|
* need cache flushing ops.
|
|
*/
|
|
#if defined(_MSC_VER)
|
|
return false;
|
|
#endif
|
|
|
|
#if DETECT_ARCH_X86
|
|
return util_get_cpu_caps()->has_sse2;
|
|
#elif DETECT_ARCH_X86_64 || DETECT_ARCH_AARCH64
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
/** Returns the cache granularity
|
|
*
|
|
* This is the maximum number of bytes that may be overwritten as the result
|
|
* of a cache flush or cache line eviction. On big.LITTLE platforms, the
|
|
* cache flush helpers may sometimes operate at a smaller granularity but may
|
|
* also round up to at most util_cache_granularity().
|
|
*
|
|
* Vulkan drivers should return this as nonCoherentAtomSize.
|
|
*/
|
|
size_t util_cache_granularity(void);
|
|
|
|
/** Flushes a range to main memory */
|
|
void util_flush_range(void *start, size_t size);
|
|
|
|
/** Flushes a range to main memory and invalidates those cache lines */
|
|
void util_flush_inval_range(void *start, size_t size);
|
|
|
|
/** Flushes a range to main memory without fencing
|
|
*
|
|
* This is for the case where you have a lot of ranges to flush and want to
|
|
* avoid unnecessary fencing. In this case, call
|
|
*
|
|
* util_pre_flush_fence()
|
|
* util_flush_range_no_fence()
|
|
* util_flush_range_no_fence()
|
|
* util_post_flush_fence()
|
|
*/
|
|
void util_flush_range_no_fence(void *start, size_t size);
|
|
|
|
/** Flushes a range to main memory and invalidates those cache lines without
|
|
* fencing
|
|
*
|
|
* This is for the case where you have a lot of ranges to flush and invalidate
|
|
* and want to avoid unnecessary fencing. In this case, call
|
|
*
|
|
* util_pre_flush_fence()
|
|
* util_flush_inval_range_no_fence()
|
|
* util_flush_range_no_fence()
|
|
* util_flush_inval_range_no_fence()
|
|
* util_post_flush_inval_fence()
|
|
*/
|
|
void util_flush_inval_range_no_fence(void *start, size_t size);
|
|
|
|
/** Fence between memory access and cache flush operations
|
|
*
|
|
* see util_flush_range_no_fence()
|
|
*/
|
|
void util_pre_flush_fence(void);
|
|
|
|
/** Fence between cache flush operations and memory access
|
|
*
|
|
* see util_flush_range_no_fence()
|
|
*/
|
|
void util_post_flush_fence(void);
|
|
|
|
/** Fence between cache invalidate operations and memory access
|
|
*
|
|
* see util_flush_inval_range_no_fence()
|
|
*/
|
|
void util_post_flush_inval_fence(void);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* UTIL_CACHE_OPS_H */
|