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panfrost: properly align CRC buffer size for prefetching

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CRC values are prefetched in 32x32 regions so we need to round up
the framebuffer size to account for that.

Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31771>
This commit is contained in:
Louis-Francis Ratté-Boulianne 2024-10-18 13:51:55 -04:00 • committed by Marge Bot
parent 45810bfc9c
commit 05abdda27b
1 changed files with 15 additions and 7 deletions
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22
src/panfrost/lib/pan_layout.c
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@ -341,20 +341,28 @@ format_minimum_alignment(unsigned arch, enum pipe_format format, uint64_t mod)
}
}
/* Computes sizes for checksumming, which is 8 bytes per 16x16 tile.
/*
* Computes sizes for checksumming, which is 8 bytes per 16x16 tile.
* Checksumming is believed to be a CRC variant (CRC64 based on the size?).
* This feature is also known as "transaction elimination". */
* This feature is also known as "transaction elimination".
* CRC values are prefetched by 32x32 regions so size needs to be aligned.
*/
#define CHECKSUM_TILE_WIDTH 16
#define CHECKSUM_TILE_HEIGHT 16
#define CHECKSUM_BYTES_PER_TILE 8
#define CHECKSUM_TILE_WIDTH 16
#define CHECKSUM_TILE_HEIGHT 16
#define CHECKSUM_REGION_SIZE 32
#define CHECKSUM_X_TILE_PER_REGION (CHECKSUM_REGION_SIZE / CHECKSUM_TILE_WIDTH)
#define CHECKSUM_Y_TILE_PER_REGION (CHECKSUM_REGION_SIZE / CHECKSUM_TILE_HEIGHT)
#define CHECKSUM_BYTES_PER_TILE 8
unsigned
panfrost_compute_checksum_size(struct pan_image_slice_layout *slice,
unsigned width, unsigned height)
{
unsigned tile_count_x = DIV_ROUND_UP(width, CHECKSUM_TILE_WIDTH);
unsigned tile_count_y = DIV_ROUND_UP(height, CHECKSUM_TILE_HEIGHT);
unsigned tile_count_x =
CHECKSUM_X_TILE_PER_REGION * DIV_ROUND_UP(width, CHECKSUM_REGION_SIZE);
unsigned tile_count_y =
CHECKSUM_Y_TILE_PER_REGION * DIV_ROUND_UP(height, CHECKSUM_REGION_SIZE);
slice->crc.stride = tile_count_x * CHECKSUM_BYTES_PER_TILE;