vc4: add hash table look-up for exported dmabufs

[mesa.git] / src / gallium / drivers / vc4 / vc4_screen.c

diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index c38e4f4381f44d117383746a164e38cb9833157e..aeb6c9a784eedced3f6d0b35f30eb512abe6891a 100644 (file)
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -30,8 +30,11 @@
 #include "util/u_debug.h"
 #include "util/u_memory.h"
 #include "util/u_format.h"
+#include "util/u_hash_table.h"
 #include "util/ralloc.h"
 
+#include <xf86drm.h>
+#include "vc4_drm.h"
 #include "vc4_screen.h"
 #include "vc4_context.h"
 #include "vc4_resource.h"
@@ -70,7 +73,16 @@ uint32_t vc4_debug;
 static const char *
 vc4_screen_get_name(struct pipe_screen *pscreen)
 {
-        return "VC4";
+        struct vc4_screen *screen = vc4_screen(pscreen);
+
+        if (!screen->name) {
+                screen->name = ralloc_asprintf(screen,
+                                               "VC4 V3D %d.%d",
+                                               screen->v3d_ver / 10,
+                                               screen->v3d_ver % 10);
+        }
+
+        return screen->name;
 }
 
 static const char *
@@ -82,7 +94,10 @@ vc4_screen_get_vendor(struct pipe_screen *pscreen)
 static void
 vc4_screen_destroy(struct pipe_screen *pscreen)
 {
+        struct vc4_screen *screen = vc4_screen(pscreen);
+
         vc4_bufmgr_destroy(pscreen);
+        close(screen->fd);
         ralloc_free(pscreen);
 }
 
@@ -213,6 +228,8 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
         case PIPE_CAP_TGSI_VOTE:
         case PIPE_CAP_MAX_WINDOW_RECTANGLES:
+        case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
+        case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
                 return 0;
 
                 /* Stream output. */
@@ -325,8 +342,10 @@ vc4_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
                 return 16384;
+
         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
-                return 0;
+                return vc4_screen(pscreen)->has_control_flow;
+
         case PIPE_SHADER_CAP_MAX_INPUTS:
                 if (shader == PIPE_SHADER_FRAGMENT)
                         return 8;
@@ -490,6 +509,88 @@ vc4_screen_is_format_supported(struct pipe_screen *pscreen,
         return retval == usage;
 }
 
+#define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))
+
+static unsigned handle_hash(void *key)
+{
+    return PTR_TO_UINT(key);
+}
+
+static int handle_compare(void *key1, void *key2)
+{
+    return PTR_TO_UINT(key1) != PTR_TO_UINT(key2);
+}
+
+static bool
+vc4_supports_branches(struct vc4_screen *screen)
+{
+#if USE_VC4_SIMULATOR
+        return true;
+#endif
+
+        struct drm_vc4_get_param p = {
+                .param = DRM_VC4_PARAM_SUPPORTS_BRANCHES,
+        };
+        int ret = drmIoctl(screen->fd, DRM_IOCTL_VC4_GET_PARAM, &p);
+
+        if (ret != 0)
+                return false;
+
+        return p.value;
+}
+
+static bool
+vc4_get_chip_info(struct vc4_screen *screen)
+{
+#if USE_VC4_SIMULATOR
+        screen->v3d_ver = 21;
+        return true;
+#endif
+
+        struct drm_vc4_get_param ident0 = {
+                .param = DRM_VC4_PARAM_V3D_IDENT0,
+        };
+        struct drm_vc4_get_param ident1 = {
+                .param = DRM_VC4_PARAM_V3D_IDENT1,
+        };
+        int ret;
+
+        ret = drmIoctl(screen->fd, DRM_IOCTL_VC4_GET_PARAM, &ident0);
+        if (ret != 0) {
+                if (errno == EINVAL) {
+                        /* Backwards compatibility with 2835 kernels which
+                         * only do V3D 2.1.
+                         */
+                        screen->v3d_ver = 21;
+                        return true;
+                } else {
+                        fprintf(stderr, "Couldn't get V3D IDENT0: %s\n",
+                                strerror(errno));
+                        return false;
+                }
+        }
+        ret = drmIoctl(screen->fd, DRM_IOCTL_VC4_GET_PARAM, &ident1);
+        if (ret != 0) {
+                fprintf(stderr, "Couldn't get V3D IDENT1: %s\n",
+                        strerror(errno));
+                return false;
+        }
+
+        uint32_t major = (ident0.value >> 24) & 0xff;
+        uint32_t minor = (ident1.value >> 0) & 0xf;
+        screen->v3d_ver = major * 10 + minor;
+
+        if (screen->v3d_ver != 21) {
+                fprintf(stderr,
+                        "V3D %d.%d not supported by this version of Mesa.\n",
+                        screen->v3d_ver / 10,
+                        screen->v3d_ver % 10);
+                return false;
+        }
+
+        return true;
+}
+
 struct pipe_screen *
 vc4_screen_create(int fd)
 {
@@ -507,6 +608,14 @@ vc4_screen_create(int fd)
 
         screen->fd = fd;
         list_inithead(&screen->bo_cache.time_list);
+        pipe_mutex_init(screen->bo_handles_mutex);
+        screen->bo_handles = util_hash_table_create(handle_hash, handle_compare);
+
+        if (vc4_supports_branches(screen))
+                screen->has_control_flow = true;
+
+        if (!vc4_get_chip_info(screen))
+                goto fail;
 
         vc4_fence_init(screen);
 
@@ -525,6 +634,11 @@ vc4_screen_create(int fd)
         pscreen->get_device_vendor = vc4_screen_get_vendor;
 
         return pscreen;
+
+fail:
+        close(fd);
+        ralloc_free(pscreen);
+        return NULL;
 }
 
 boolean