crocus: initial gallium driver for Intel gfx 4-7

This is a gallium driver for the Intel gfx 4-7 GPUs.

It was initially cloned from the iris driver by Ilia Mirkin,
then I ported over large reams of code from i965 until it worked.

Acked-by: Jason Ekstrand <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11146>

Author: airlied

meson.build

@@ -231,6 +231,7 @@ with_gallium_v3d = gallium_drivers.contains('v3d')
 with_gallium_panfrost = gallium_drivers.contains('panfrost')
 with_gallium_etnaviv = gallium_drivers.contains('etnaviv')
 with_gallium_tegra = gallium_drivers.contains('tegra')
+with_gallium_crocus = gallium_drivers.contains('crocus')
 with_gallium_iris = gallium_drivers.contains('iris')
 with_gallium_i915 = gallium_drivers.contains('i915')
 with_gallium_svga = gallium_drivers.contains('svga')
@@ -284,7 +285,7 @@ with_broadcom_vk = _vulkan_drivers.contains('broadcom')
 with_any_vk = _vulkan_drivers.length() != 0
 
 with_any_broadcom = with_gallium_vc4 or with_gallium_v3d or with_broadcom_vk
-with_any_intel = with_dri_i965 or with_intel_vk or with_gallium_iris
+with_any_intel = with_dri_i965 or with_intel_vk or with_gallium_iris or with_gallium_crocus
 
 if with_swrast_vk and not with_gallium_softpipe
   error('swrast vulkan requires gallium swrast')
@@ -795,7 +796,7 @@ if with_gallium_st_nine
     error('The nine state tracker requires gallium softpipe/llvmpipe.')
   elif not (with_gallium_radeonsi or with_gallium_nouveau or with_gallium_r600
             or with_gallium_r300 or with_gallium_svga or with_gallium_i915
-            or with_gallium_iris)
+            or with_gallium_iris or with_gallium_crocus)
     error('The nine state tracker requires at least one non-swrast gallium driver.')
   endif
   if not with_dri3

meson_options.txt

@@ -67,7 +67,7 @@ option(
   choices : [
     'auto', 'kmsro', 'radeonsi', 'r300', 'r600', 'nouveau', 'freedreno',
     'swrast', 'v3d', 'vc4', 'etnaviv', 'tegra', 'i915', 'svga', 'virgl',
-    'swr', 'panfrost', 'iris', 'lima', 'zink', 'd3d12', 'asahi'
+    'swr', 'panfrost', 'iris', 'lima', 'zink', 'd3d12', 'asahi', 'crocus'
   ],
   description : 'List of gallium drivers to build. If this is set to auto all drivers applicable to the target OS/architecture will be built'
 )

src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c

@@ -70,6 +70,7 @@ static const struct pipe_loader_ops pipe_loader_drm_ops;
 static const struct drm_driver_descriptor *driver_descriptors[] = {
    &i915_driver_descriptor,
    &iris_driver_descriptor,
+   &crocus_driver_descriptor,
    &nouveau_driver_descriptor,
    &r300_driver_descriptor,
    &r600_driver_descriptor,

src/gallium/auxiliary/target-helpers/drm_helper.h

@@ -112,6 +112,26 @@ DRM_DRIVER_DESCRIPTOR(iris, iris_driconf, ARRAY_SIZE(iris_driconf))
 DRM_DRIVER_DESCRIPTOR_STUB(iris)
 #endif
 
+#ifdef GALLIUM_CROCUS
+#include "crocus/drm/crocus_drm_public.h"
+
+static struct pipe_screen *
+pipe_crocus_create_screen(int fd, const struct pipe_screen_config *config)
+{
+   struct pipe_screen *screen;
+
+   screen = crocus_drm_screen_create(fd, config);
+   return screen ? debug_screen_wrap(screen) : NULL;
+}
+
+const driOptionDescription crocus_driconf[] = {
+      #include "crocus/driinfo_crocus.h"
+};
+DRM_DRIVER_DESCRIPTOR(crocus, crocus_driconf, ARRAY_SIZE(crocus_driconf))
+#else
+DRM_DRIVER_DESCRIPTOR_STUB(crocus)
+#endif
+
 #ifdef GALLIUM_NOUVEAU
 #include "nouveau/drm/nouveau_drm_public.h"
 

src/gallium/auxiliary/target-helpers/drm_helper_public.h

@@ -6,6 +6,7 @@ struct pipe_screen_config;
 
 extern const struct drm_driver_descriptor i915_driver_descriptor;
 extern const struct drm_driver_descriptor iris_driver_descriptor;
+extern const struct drm_driver_descriptor crocus_driver_descriptor;
 extern const struct drm_driver_descriptor nouveau_driver_descriptor;
 extern const struct drm_driver_descriptor r300_driver_descriptor;
 extern const struct drm_driver_descriptor r600_driver_descriptor;