intel: Store the aperture size in devinfo.

We will later use the devinfo from iris_bufmgr, where we don't have
access to the screen pointer. And since we are moving it, we can reuse
it in Anv and i965.

v2: return error code and check for it on Anv (Lionel).
v3: Remove anv_gem_get_aperture() from anv_private.h and stubs (Lionel).

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5043>

src/gallium/drivers/iris/iris_screen.c

@@ -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)
 {
@@ -283,7 +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);
@@ -718,8 +710,6 @@ iris_screen_create(int fd, const struct pipe_screen_config *config)
 
    screen->fd = iris_bufmgr_get_fd(screen->bufmgr);
 
-   screen->aperture_bytes = get_aperture_size(fd);
-
    if (getenv("INTEL_NO_HW") != NULL)
       screen->no_hw = true;
 

src/intel/dev/gen_device_info.c

@@ -1396,6 +1396,18 @@ query_topology(struct gen_device_info *devinfo, int fd)
 
 }
 
+int
+gen_get_aperture_size(int fd, uint64_t *size)
+{
+   struct drm_i915_gem_get_aperture aperture = { 0 };
+
+   int ret = gen_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
+   if (ret == 0 && size)
+      *size = aperture.aper_size;
+
+   return ret;
+}
+
 bool
 gen_get_device_info_from_fd(int fd, struct gen_device_info *devinfo)
 {
@@ -1463,5 +1475,7 @@ gen_get_device_info_from_fd(int fd, struct gen_device_info *devinfo)
       getparam_topology(devinfo, fd);
    }
 
+   gen_get_aperture_size(fd, &devinfo->aperture_bytes);
+
    return true;
 }

src/intel/dev/gen_device_info.h

@@ -252,6 +252,8 @@ struct gen_device_info
     */
    uint64_t timestamp_frequency;
 
+   uint64_t aperture_bytes;
+
    /**
     * ID to put into the .aub files.
     */
@@ -293,6 +295,7 @@ gen_device_info_timebase_scale(const struct gen_device_info *devinfo,
 bool gen_get_device_info_from_fd(int fh, struct gen_device_info *devinfo);
 bool gen_get_device_info_from_pci_id(int pci_id,
                                      struct gen_device_info *devinfo);
+int gen_get_aperture_size(int fd, uint64_t *size);
 
 #ifdef __cplusplus
 }

src/intel/vulkan/anv_device.c

@@ -136,7 +136,7 @@ anv_physical_device_init_heaps(struct anv_physical_device *device, int fd)
       anv_perf_warn(NULL, NULL,
                     "Failed to get I915_CONTEXT_PARAM_GTT_SIZE: %m");
 
-      if (anv_gem_get_aperture(fd, &device->gtt_size) == -1) {
+      if (gen_get_aperture_size(fd, &device->gtt_size) == -1) {
          return vk_errorfi(device->instance, NULL,
                            VK_ERROR_INITIALIZATION_FAILED,
                            "failed to get aperture size: %m");

src/intel/vulkan/anv_gem.c

@@ -389,20 +389,6 @@ anv_gem_get_context_param(int fd, int context, uint32_t param, uint64_t *value)
    return 0;
 }
 
-int
-anv_gem_get_aperture(int fd, uint64_t *size)
-{
-   struct drm_i915_gem_get_aperture aperture = { 0 };
-
-   int ret = gen_ioctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
-   if (ret == -1)
-      return -1;
-
-   *size = aperture.aper_available_size;
-
-   return 0;
-}
-
 int
 anv_gem_gpu_get_reset_stats(struct anv_device *device,
                             uint32_t *active, uint32_t *pending)

src/intel/vulkan/anv_gem_stubs.c

@@ -159,12 +159,6 @@ anv_gem_has_context_priority(int fd)
    unreachable("Unused");
 }
 
-int
-anv_gem_get_aperture(int fd, uint64_t *size)
-{
-   unreachable("Unused");
-}
-
 int
 anv_gem_gpu_get_reset_stats(struct anv_device *device,
                             uint32_t *active, uint32_t *pending)

src/intel/vulkan/anv_private.h

@@ -1530,7 +1530,6 @@ int anv_gem_get_context_param(int fd, int context, uint32_t param,
 int anv_gem_get_param(int fd, uint32_t param);
 int anv_gem_get_tiling(struct anv_device *device, uint32_t gem_handle);
 bool anv_gem_get_bit6_swizzle(int fd, uint32_t tiling);
-int anv_gem_get_aperture(int fd, uint64_t *size);
 int anv_gem_gpu_get_reset_stats(struct anv_device *device,
                                 uint32_t *active, uint32_t *pending);
 int anv_gem_handle_to_fd(struct anv_device *device, uint32_t gem_handle);

src/mesa/drivers/dri/i965/intel_screen.c

@@ -1505,17 +1505,6 @@ static const __DRIimageExtension intelImageExtension = {
     .queryDmaBufFormatModifierAttribs   = intel_query_format_modifier_attribs,
 };
 
-static uint64_t
-get_aperture_size(int fd)
-{
-   struct drm_i915_gem_get_aperture aperture;
-
-   if (drmIoctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture) != 0)
-      return 0;
-
-   return aperture.aper_size;
-}
-
 static int
 brw_query_renderer_integer(__DRIscreen *dri_screen,
                            int param, unsigned int *value)
@@ -2610,7 +2599,7 @@ __DRIconfig **intelInitScreen2(__DRIscreen *dri_screen)
       screen->max_gtt_map_object_size = gtt_size / 4;
    }
 
-   screen->aperture_threshold = get_aperture_size(screen->fd) * 3 / 4;
+   screen->aperture_threshold = devinfo->aperture_bytes * 3 / 4;
 
    screen->hw_has_swizzling = intel_detect_swizzling(screen);
    screen->hw_has_timestamp = intel_detect_timestamp(screen);