gallium: add interface for querying memory usage and sizes (v2)

If you're worried about the duplication of some CAPs, we can remove them
later.

v2: add fields for memory eviction stats

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -165,6 +165,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_TEXTURE_BARRIER:
 	case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 	case PIPE_CAP_COMPUTE:
+	case PIPE_CAP_QUERY_MEMORY_INFO:
 		return 0;
 
 	case PIPE_CAP_SM3:

src/gallium/drivers/i915/i915_screen.c

@@ -264,6 +264,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_STRING_MARKER:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
 
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:

src/gallium/drivers/ilo/ilo_screen.c

@@ -490,6 +490,7 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_STRING_MARKER:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/llvmpipe/lp_screen.c

@@ -314,6 +314,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
    }
    /* should only get here on unhandled cases */

src/gallium/drivers/nouveau/nv30/nv30_screen.c

@@ -187,6 +187,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/nouveau/nv50/nv50_screen.c

@@ -230,6 +230,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/nouveau/nvc0/nvc0_screen.c

@@ -220,6 +220,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_STRING_MARKER:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:

src/gallium/drivers/r300/r300_screen.c

@@ -213,6 +213,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
         case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
         case PIPE_CAP_QUERY_BUFFER_OBJECT:
+        case PIPE_CAP_QUERY_MEMORY_INFO:
             return 0;
 
         /* SWTCL-only features. */

src/gallium/drivers/r600/r600_pipe.c

@@ -369,6 +369,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_GENERATE_MIPMAP:
 	case PIPE_CAP_STRING_MARKER:
 	case PIPE_CAP_QUERY_BUFFER_OBJECT:
+	case PIPE_CAP_QUERY_MEMORY_INFO:
 		return 0;
 
 	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:

src/gallium/drivers/radeonsi/si_pipe.c

@@ -361,6 +361,7 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_GENERATE_MIPMAP:
 	case PIPE_CAP_STRING_MARKER:
 	case PIPE_CAP_QUERY_BUFFER_OBJECT:
+	case PIPE_CAP_QUERY_MEMORY_INFO:
 		return 0;
 
 	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:

src/gallium/drivers/softpipe/sp_screen.c

@@ -265,6 +265,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_STRING_MARKER:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
    }
    /* should only get here on unhandled cases */

src/gallium/drivers/svga/svga_screen.c

@@ -359,6 +359,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_INVALIDATE_BUFFER:
    case PIPE_CAP_STRING_MARKER:
    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
+   case PIPE_CAP_QUERY_MEMORY_INFO:
       return 0;
    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
       return 64;

src/gallium/drivers/vc4/vc4_screen.c

@@ -202,6 +202,7 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_STRING_MARKER:
         case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
         case PIPE_CAP_QUERY_BUFFER_OBJECT:
+	case PIPE_CAP_QUERY_MEMORY_INFO:
                 return 0;
 
                 /* Stream output. */

src/gallium/include/pipe/p_defines.h

@@ -651,6 +651,7 @@ enum pipe_cap
    PIPE_CAP_STRING_MARKER,
    PIPE_CAP_SURFACE_REINTERPRET_BLOCKS,
    PIPE_CAP_QUERY_BUFFER_OBJECT,
+   PIPE_CAP_QUERY_MEMORY_INFO,
 };
 
 #define PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 (1 << 0)

src/gallium/include/pipe/p_screen.h

@@ -57,6 +57,7 @@ struct pipe_resource;
 struct pipe_surface;
 struct pipe_transfer;
 struct pipe_box;
+struct pipe_memory_info;
 
 
 /**
@@ -260,6 +261,11 @@ struct pipe_screen {
                                       unsigned index,
                                       struct pipe_driver_query_group_info *info);
 
+   /**
+    * Query information about memory usage.
+    */
+   void (*query_memory_info)(struct pipe_screen *screen,
+                             struct pipe_memory_info *info);
 };
 
 

src/gallium/include/pipe/p_state.h

@@ -720,6 +720,19 @@ struct pipe_debug_callback
    void *data;
 };
 
+/**
+ * Information about memory usage. All sizes are in kilobytes.
+ */
+struct pipe_memory_info
+{
+   unsigned total_device_memory; /**< size of device memory, e.g. VRAM */
+   unsigned avail_device_memory; /**< free device memory at the moment */
+   unsigned total_staging_memory; /**< size of staging memory, e.g. GART */
+   unsigned avail_staging_memory; /**< free staging memory at the moment */
+   unsigned device_memory_evicted; /**< size of memory evicted (monotonic counter) */
+   unsigned nr_device_memory_evictions; /**< # of evictions (monotonic counter) */
+};
+
 #ifdef __cplusplus
 }
 #endif