[Mesa-dev] [PATCH v2 02/17] etnaviv: Put HALTI level in specs

[Wladimir J. van der Laan]

The HALTI level is an indication of the gross architecture of the GPU.
It determines for significant part what feature level the GPU has, what
state (especially frontend state) is there, and where it is located.

Signed-off-by: Wladimir J. van der Laan <laanwj at gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner at gmail.com>
---
 src/gallium/drivers/etnaviv/etnaviv_internal.h |  2 ++
 src/gallium/drivers/etnaviv/etnaviv_screen.c   | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)

Unchanged since v1.

diff --git a/src/gallium/drivers/etnaviv/etnaviv_internal.h b/src/gallium/drivers/etnaviv/etnaviv_internal.h
index 707a1e0..48dd5bf 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_internal.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_internal.h
@@ -60,6 +60,8 @@
 
 /* GPU chip 3D specs */
 struct etna_specs {
+   /* HALTI (gross architecture) level. -1 for pre-HALTI. */
+   int halti : 8;
    /* supports SUPERTILE (64x64) tiling? */
    unsigned can_supertile : 1;
    /* needs z=(z+w)/2, for older GCxxx */
diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index eaf3ca2..9a957ab 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -690,6 +690,27 @@ etna_get_specs(struct etna_screen *screen)
    }
    screen->specs.num_constants = val;
 
+   /* Figure out gross GPU architecture. See rnndb/common.xml for a specific
+    * description of the differences. */
+   if (VIV_FEATURE(screen, chipMinorFeatures5, HALTI5))
+      screen->specs.halti = 5; /* New GC7000/GC8x00  */
+   else if (VIV_FEATURE(screen, chipMinorFeatures5, HALTI4))
+      screen->specs.halti = 4; /* Old GC7000/GC7400 */
+   else if (VIV_FEATURE(screen, chipMinorFeatures5, HALTI3))
+      screen->specs.halti = 3; /* None? */
+   else if (VIV_FEATURE(screen, chipMinorFeatures4, HALTI2))
+      screen->specs.halti = 2; /* GC2500/GC3000/GC5000/GC6400 */
+   else if (VIV_FEATURE(screen, chipMinorFeatures2, HALTI1))
+      screen->specs.halti = 1; /* GC900/GC4000/GC7000UL */
+   else if (VIV_FEATURE(screen, chipMinorFeatures1, HALTI0))
+      screen->specs.halti = 0; /* GC880/GC2000/GC7000TM */
+   else
+      screen->specs.halti = -1; /* GC7000nanolite / pre-GC2000 except GC880 */
+   if (screen->specs.halti >= 0)
+      DBG("etnaviv: GPU arch: HALTI%d\n", screen->specs.halti);
+   else
+      DBG("etnaviv: GPU arch: pre-HALTI\n");
+
    screen->specs.can_supertile =
       VIV_FEATURE(screen, chipMinorFeatures0, SUPER_TILED);
    screen->specs.bits_per_tile =
-- 
2.7.4