diff options
Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_dcache.c')
| -rw-r--r-- | src/gallium/drivers/cell/spu/spu_dcache.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_dcache.c b/src/gallium/drivers/cell/spu/spu_dcache.c index 68aa5c4ae8..698a5790bb 100644 --- a/src/gallium/drivers/cell/spu/spu_dcache.c +++ b/src/gallium/drivers/cell/spu/spu_dcache.c @@ -26,6 +26,10 @@ #include "spu_main.h" #include "spu_dcache.h" +#define CACHELINE_LOG2SIZE 7 +#define LINE_SIZE (1U << 7) +#define ALIGN_MASK (~(LINE_SIZE - 1)) + #define CACHE_NAME data #define CACHED_TYPE qword #define CACHE_TYPE CACHE_TYPE_RO @@ -60,7 +64,7 @@ spu_dcache_fetch_unaligned(qword *dst, unsigned ea, unsigned size) /* Data is already aligned. Fetch directly into the destination buffer. */ for (i = 0; i < num_entries; i++) { - dst[i] = cache_rd(data, (ea & ~0x0f) + (i * 16)); + dst[i] = cache_rd(data, ea + (i * 16)); } } else { qword tmp[2] ALIGN16_ATTRIB; @@ -85,17 +89,23 @@ spu_dcache_fetch_unaligned(qword *dst, unsigned ea, unsigned size) } +/** + * Notify the cache that a range of main memory may have been modified + */ void spu_dcache_mark_dirty(unsigned ea, unsigned size) { unsigned i; + const unsigned aligned_start = (ea & ALIGN_MASK); + const unsigned aligned_end = (ea + size + (LINE_SIZE - 1)) + & ALIGN_MASK; - (void) ea; - (void) size; - /* Invalidate the whole cache for now. - */ for (i = 0; i < (CACHE_NWAY * CACHE_NSETS); i++) { - CACHELINE_CLEARVALID(i); + const unsigned entry = __cache_dir[i]; + const unsigned addr = entry & ~0x0f; + + __cache_dir[i] = ((addr >= aligned_start) && (addr < aligned_end)) + ? (entry & ~CACHELINE_VALID) : entry; } } |