gallium: add shader caps INT16 and FP16_DERIVATIVES
[mesa.git] / src / gallium / drivers / iris / iris_screen.c
index d6c7e4b0ac5755d0c0e699d9d05854b65d69cde4..73ce828872486ad30bfd79438d60b49023e739f8 100644 (file)
@@ -90,14 +90,6 @@ iris_get_name(struct pipe_screen *pscreen)
    return buf;
 }
 
-static uint64_t
-get_aperture_size(int fd)
-{
-   struct drm_i915_gem_get_aperture aperture = {};
-   gen_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
-   return aperture.aper_size;
-}
-
 static int
 iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 {
@@ -179,6 +171,7 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_BALLOT:
    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
    case PIPE_CAP_CLEAR_TEXTURE:
+   case PIPE_CAP_CLEAR_SCISSORED:
    case PIPE_CAP_TGSI_VOTE:
    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
    case PIPE_CAP_TEXTURE_GATHER_SM5:
@@ -211,6 +204,8 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_FRAGMENT_SHADER_INTERLOCK:
    case PIPE_CAP_ATOMIC_FLOAT_MINMAX:
       return devinfo->gen >= 9;
+   case PIPE_CAP_DEPTH_BOUNDS_TEST:
+      return devinfo->gen >= 12;
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
       return 1;
    case PIPE_CAP_MAX_RENDER_TARGETS:
@@ -280,7 +275,7 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
        * flushing, etc.  That's the big cliff apps will care about.
        */
       const unsigned gpu_mappable_megabytes =
-         (screen->aperture_bytes * 3 / 4) / (1024 * 1024);
+         (devinfo->aperture_bytes * 3 / 4) / (1024 * 1024);
 
       const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
       const long system_page_size = sysconf(_SC_PAGE_SIZE);
@@ -410,6 +405,8 @@ iris_get_shader_param(struct pipe_screen *pscreen,
       return 1;
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return 0;
    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
    case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
@@ -449,6 +446,7 @@ iris_get_compute_param(struct pipe_screen *pscreen,
    struct iris_screen *screen = (struct iris_screen *)pscreen;
    const struct gen_device_info *devinfo = &screen->devinfo;
 
+   /* Limit max_threads to 64 for the GPGPU_WALKER command. */
    const unsigned max_threads = MIN2(64, devinfo->max_cs_threads);
    const uint32_t max_invocations = 32 * max_threads;
 
@@ -479,6 +477,8 @@ iris_get_compute_param(struct pipe_screen *pscreen,
 
    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
       /* MaxComputeWorkGroupInvocations */
+   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
+      /* MaxComputeVariableGroupInvocations */
       RET((uint64_t []) { max_invocations });
 
    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
@@ -497,7 +497,6 @@ iris_get_compute_param(struct pipe_screen *pscreen,
    case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
    case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
    case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
-   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
       // XXX: I think these are for Clover...
       return 0;
 
@@ -521,18 +520,22 @@ iris_get_timestamp(struct pipe_screen *pscreen)
    return result;
 }
 
-static void
-iris_destroy_screen(struct pipe_screen *pscreen)
+void
+iris_screen_destroy(struct iris_screen *screen)
 {
-   struct iris_screen *screen = (struct iris_screen *) pscreen;
    iris_bo_unreference(screen->workaround_bo);
-   u_transfer_helper_destroy(pscreen->transfer_helper);
-   iris_bufmgr_destroy(screen->bufmgr);
+   u_transfer_helper_destroy(screen->base.transfer_helper);
+   iris_bufmgr_unref(screen->bufmgr);
    disk_cache_destroy(screen->disk_cache);
-   close(screen->fd);
    ralloc_free(screen);
 }
 
+static void
+iris_screen_unref(struct pipe_screen *pscreen)
+{
+   iris_pscreen_unref(pscreen);
+}
+
 static void
 iris_query_memory_info(struct pipe_screen *pscreen,
                        struct pipe_memory_info *info)
@@ -559,22 +562,22 @@ iris_get_disk_shader_cache(struct pipe_screen *pscreen)
 }
 
 static int
-iris_getparam(struct iris_screen *screen, int param, int *value)
+iris_getparam(int fd, int param, int *value)
 {
    struct drm_i915_getparam gp = { .param = param, .value = value };
 
-   if (ioctl(screen->fd, DRM_IOCTL_I915_GETPARAM, &gp) == -1)
+   if (ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp) == -1)
       return -errno;
 
    return 0;
 }
 
 static int
-iris_getparam_integer(struct iris_screen *screen, int param)
+iris_getparam_integer(int fd, int param)
 {
    int value = -1;
 
-   if (iris_getparam(screen, param, &value) == 0)
+   if (iris_getparam(fd, param, &value) == 0)
       return value;
 
    return -1;
@@ -628,28 +631,66 @@ iris_shader_perf_log(void *data, const char *fmt, ...)
    va_end(args);
 }
 
+static void
+iris_detect_kernel_features(struct iris_screen *screen)
+{
+   /* Kernel 5.2+ */
+   if (gen_gem_supports_syncobj_wait(screen->fd))
+      screen->kernel_features |= KERNEL_HAS_WAIT_FOR_SUBMIT;
+}
+
+static bool
+iris_init_identifier_bo(struct iris_screen *screen)
+{
+   void *bo_map;
+
+   bo_map = iris_bo_map(NULL, screen->workaround_bo, MAP_READ | MAP_WRITE);
+   if (!bo_map)
+      return false;
+
+   screen->workaround_bo->kflags |= EXEC_OBJECT_CAPTURE;
+   screen->workaround_address = (struct iris_address) {
+      .bo = screen->workaround_bo,
+      .offset = ALIGN(
+         intel_debug_write_identifiers(bo_map, 4096, "Iris") + 8, 8),
+   };
+
+   iris_bo_unmap(screen->workaround_bo);
+
+   return true;
+}
+
 struct pipe_screen *
 iris_screen_create(int fd, const struct pipe_screen_config *config)
 {
+   /* Here are the i915 features we need for Iris (in chronoligical order) :
+    *    - I915_PARAM_HAS_EXEC_NO_RELOC     (3.10)
+    *    - I915_PARAM_HAS_EXEC_HANDLE_LUT   (3.10)
+    *    - I915_PARAM_HAS_EXEC_BATCH_FIRST  (4.13)
+    *    - I915_PARAM_HAS_EXEC_FENCE_ARRAY  (4.14)
+    *    - I915_PARAM_HAS_CONTEXT_ISOLATION (4.16)
+    *
+    * Checking the last feature availability will include all previous ones.
+    */
+   if (!iris_getparam_integer(fd, I915_PARAM_HAS_CONTEXT_ISOLATION)) {
+      debug_error("Kernel is too old for Iris. Consider upgrading to kernel v4.16.\n");
+      return NULL;
+   }
+
    struct iris_screen *screen = rzalloc(NULL, struct iris_screen);
    if (!screen)
       return NULL;
 
-   screen->fd = fd;
-
    if (!gen_get_device_info_from_fd(fd, &screen->devinfo))
       return NULL;
    screen->pci_id = screen->devinfo.chipset_id;
    screen->no_hw = screen->devinfo.no_hw;
 
+   p_atomic_set(&screen->refcount, 1);
+
    if (screen->devinfo.gen < 8 || screen->devinfo.is_cherryview)
       return NULL;
 
-   screen->aperture_bytes = get_aperture_size(fd);
-
-   if (getenv("INTEL_NO_HW") != NULL)
-      screen->no_hw = true;
-
    bool bo_reuse = false;
    int bo_reuse_mode = driQueryOptioni(config->options, "bo_reuse");
    switch (bo_reuse_mode) {
@@ -660,15 +701,23 @@ iris_screen_create(int fd, const struct pipe_screen_config *config)
       break;
    }
 
-   screen->bufmgr = iris_bufmgr_init(&screen->devinfo, fd, bo_reuse);
+   screen->bufmgr = iris_bufmgr_get_for_fd(&screen->devinfo, fd, bo_reuse);
    if (!screen->bufmgr)
       return NULL;
 
+   screen->fd = iris_bufmgr_get_fd(screen->bufmgr);
+
+   if (getenv("INTEL_NO_HW") != NULL)
+      screen->no_hw = true;
+
    screen->workaround_bo =
       iris_bo_alloc(screen->bufmgr, "workaround", 4096, IRIS_MEMZONE_OTHER);
    if (!screen->workaround_bo)
       return NULL;
 
+   if (!iris_init_identifier_bo(screen))
+      return NULL;
+
    brw_process_intel_debug_variable();
 
    screen->driconf.dual_color_blend_by_location =
@@ -698,15 +747,17 @@ iris_screen_create(int fd, const struct pipe_screen_config *config)
                       sizeof(struct iris_transfer), 64);
 
    screen->subslice_total =
-      iris_getparam_integer(screen, I915_PARAM_SUBSLICE_TOTAL);
+      iris_getparam_integer(screen->fd, I915_PARAM_SUBSLICE_TOTAL);
    assert(screen->subslice_total >= 1);
 
+   iris_detect_kernel_features(screen);
+
    struct pipe_screen *pscreen = &screen->base;
 
    iris_init_screen_fence_functions(pscreen);
    iris_init_screen_resource_functions(pscreen);
 
-   pscreen->destroy = iris_destroy_screen;
+   pscreen->destroy = iris_screen_unref;
    pscreen->get_name = iris_get_name;
    pscreen->get_vendor = iris_get_vendor;
    pscreen->get_device_vendor = iris_get_device_vendor;