broadcom: Add V3D 3.3 gallium driver called "vc5", for BCM7268.

V3D 3.3 is a continuation of the 3D implementation in VC4 (v2.1 and v2.6).
V3D 3.3 introduces an MMU (no more CMA allocations) and support for
GLES3.1.  This driver is not currently conformant, though that will be a
target as soon as possible.

V3D 3.x parts use a new texture tiling layout common across many Broadcom
graphics parts including and the HVS scanout engine.  It also massively
changes the QPU instructions, introducing a common physical register file
(no more A/B split) and half-float instructions, while removing the 4x8
unorm instructions in favor of half-float for talking to fixed function
interfaces.  Because so much has changed, vc5 is implemented in a separate
gallium driver, using only the XML code-generation support from vc4.

v2: Fix tile layout for 64bpp textures.  Fix texture swizzling for 32-bit
    returns.  Fix up a bit of MRT setup.  Sync the simulator to kernel
    behavior a bit more.  Improve uniform debugging code.  Rebase on
    QIR->VIR rename.  Move texture state mostly to the CSOs.  Improve
    cache flushing on the simulator.  Fix program deletion
    use-after-frees.

Acked-by: Dave Airlie <[email protected]> (uabi plan)
Acked-by: Daniel Vetter <[email protected]> (uabi plan)

3 files changed, 31 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c b/src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c
index 69a02838cc3..810542101ed 100644
--- a/src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c
+++ b/src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c
@@ -121,6 +121,11 @@ static const struct drm_driver_descriptor driver_descriptors[] = {
         .configuration = pipe_default_configuration_query,
     },
     {
+        .driver_name = "vc5",
+        .create_screen = pipe_vc5_create_screen,
+        .configuration = pipe_default_configuration_query,
+    },
+    {
         .driver_name = "etnaviv",
         .create_screen = pipe_etna_create_screen,
         .configuration = pipe_default_configuration_query,
diff --git a/src/gallium/auxiliary/target-helpers/drm_helper.h b/src/gallium/auxiliary/target-helpers/drm_helper.h
index 95b4a27111c..7aea83b8842 100644
--- a/src/gallium/auxiliary/target-helpers/drm_helper.h
+++ b/src/gallium/auxiliary/target-helpers/drm_helper.h
@@ -310,6 +310,29 @@ pipe_vc4_create_screen(int fd, const struct pipe_screen_config *config)
 
 #endif
 
+#ifdef GALLIUM_VC5
+#include "vc5/drm/vc5_drm_public.h"
+
+struct pipe_screen *
+pipe_vc5_create_screen(int fd, const struct pipe_screen_config *config)
+{
+   struct pipe_screen *screen;
+
+   screen = vc5_drm_screen_create(fd);
+   return screen ? debug_screen_wrap(screen) : NULL;
+}
+
+#else
+
+struct pipe_screen *
+pipe_vc5_create_screen(int fd, const struct pipe_screen_config *config)
+{
+   fprintf(stderr, "vc5: driver missing\n");
+   return NULL;
+}
+
+#endif
+
 #ifdef GALLIUM_ETNAVIV
 #include "etnaviv/drm/etnaviv_drm_public.h"
 
diff --git a/src/gallium/auxiliary/target-helpers/drm_helper_public.h b/src/gallium/auxiliary/target-helpers/drm_helper_public.h
index 46819131bda..e21ea32fabe 100644
--- a/src/gallium/auxiliary/target-helpers/drm_helper_public.h
+++ b/src/gallium/auxiliary/target-helpers/drm_helper_public.h
@@ -40,6 +40,9 @@ struct pipe_screen *
 pipe_vc4_create_screen(int fd, const struct pipe_screen_config *config);
 
 struct pipe_screen *
+pipe_vc5_create_screen(int fd, const struct pipe_screen_config *config);
+
+struct pipe_screen *
 pipe_pl111_create_screen(int fd, const struct pipe_screen_config *config);
 
 struct pipe_screen *