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| author | Alexandre Demers <alexandre.f.demers@gmail.com> | 2016-02-10 09:45:46 -0500 |
|---|---|---|
| committer | Marek Olšák <marek.olsak@amd.com> | 2016-02-10 19:29:41 +0100 |
| commit | 111602e15909ee2785334db008ac17d4eee8f391 (patch) | |
| tree | fcd2c325dd6bbfbe2ea9bfe1e1f59b18d748e4b2 /src/gallium/winsys | |
| parent | 5e8db898fd53b7622e21616f0ff27d985d7be758 (diff) | |
| download | external_mesa3d-111602e15909ee2785334db008ac17d4eee8f391.zip external_mesa3d-111602e15909ee2785334db008ac17d4eee8f391.tar.gz external_mesa3d-111602e15909ee2785334db008ac17d4eee8f391.tar.bz2 | |
winsys/radeon: better explain the num_tile_pipes fixup for TAHITI (v2)
v2: Clarify the relation between num_tiles_pipes and GB_TILE_MODE and the fix
needed for Tahiti as suggested by Marek.
Signed-off-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Diffstat (limited to 'src/gallium/winsys')
| -rw-r--r-- | src/gallium/winsys/radeon/drm/radeon_drm_winsys.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c index 49c310c..73ef051 100644 --- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c +++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c @@ -405,8 +405,10 @@ static boolean do_winsys_init(struct radeon_drm_winsys *ws) radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_TILE_PIPES, NULL, &ws->info.num_tile_pipes); - /* The kernel returns 12 for some cards for an unknown reason. - * I thought this was supposed to be a power of two. + /* "num_tiles_pipes" must be equal to the number of pipes (Px) in the + /* pipe config field of the GB_TILE_MODE array. Only one card (Tahiti) + /* reports a different value (12). Fix it by setting what's in the + /* GB_TILE_MODE array (8). */ if (ws->gen == DRV_SI && ws->info.num_tile_pipes == 12) ws->info.num_tile_pipes = 8; |