intel: Add interface for getting tiling mode of a bo.

4 files changed, 44 insertions, 0 deletions

diff --git a/libdrm/intel/intel_bufmgr.c b/libdrm/intel/intel_bufmgr.c
index fc7284b5..92b60467 100644
--- a/libdrm/intel/intel_bufmgr.c
+++ b/libdrm/intel/intel_bufmgr.c
@@ -192,3 +192,13 @@ int dri_bo_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
     *tiling_mode = I915_TILING_NONE;
     return 0;
 }
+
+int dri_bo_get_tiling(dri_bo *bo, uint32_t *tiling_mode, uint32_t *swizzle_mode)
+{
+    if (bo->bufmgr->bo_get_tiling)
+	return bo->bufmgr->bo_get_tiling(bo, tiling_mode, swizzle_mode);
+
+    *tiling_mode = I915_TILING_NONE;
+    *swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
+    return 0;
+}
diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h
index c44d596b..0c7b0e47 100644
--- a/libdrm/intel/intel_bufmgr.h
+++ b/libdrm/intel/intel_bufmgr.h
@@ -87,6 +87,8 @@ int dri_bo_emit_reloc(dri_bo *reloc_buf,
 int dri_bo_pin(dri_bo *buf, uint32_t alignment);
 int dri_bo_unpin(dri_bo *buf);
 int dri_bo_set_tiling(dri_bo *buf, uint32_t *tiling_mode);
+int dri_bo_get_tiling(dri_bo *buf, uint32_t *tiling_mode,
+		      uint32_t *swizzle_mode);
 int dri_bo_flink(dri_bo *buf, uint32_t *name);
 
 /* intel_bufmgr_gem.c */
diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
index 9bd44417..33853c4a 100644
--- a/libdrm/intel/intel_bufmgr_gem.c
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -873,6 +873,28 @@ dri_gem_bo_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
 }
 
 static int
+dri_gem_bo_get_tiling(dri_bo *bo, uint32_t *tiling_mode, uint32_t *swizzle_mode)
+{
+    dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+    dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+    struct drm_i915_gem_get_tiling get_tiling;
+    int ret;
+
+    get_tiling.handle = bo_gem->gem_handle;
+
+    ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_GET_TILING, &get_tiling);
+    if (ret != 0) {
+	*tiling_mode = I915_TILING_NONE;
+	*swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
+	return -errno;
+    }
+
+    *tiling_mode = get_tiling.tiling_mode;
+    *swizzle_mode = get_tiling.swizzle_mode;
+    return 0;
+}
+
+static int
 dri_gem_bo_flink(dri_bo *bo, uint32_t *name)
 {
     dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
@@ -959,6 +981,7 @@ intel_bufmgr_gem_init(int fd, int batch_size)
     bufmgr_gem->bufmgr.bo_emit_reloc = dri_gem_bo_emit_reloc;
     bufmgr_gem->bufmgr.bo_pin = dri_gem_bo_pin;
     bufmgr_gem->bufmgr.bo_unpin = dri_gem_bo_unpin;
+    bufmgr_gem->bufmgr.bo_get_tiling = dri_gem_bo_get_tiling;
     bufmgr_gem->bufmgr.bo_set_tiling = dri_gem_bo_set_tiling;
     bufmgr_gem->bufmgr.bo_flink = dri_gem_bo_flink;
     bufmgr_gem->bufmgr.bo_exec = dri_gem_bo_exec;
diff --git a/libdrm/intel/intel_bufmgr_priv.h b/libdrm/intel/intel_bufmgr_priv.h
index 7f39bfc2..cbf3b311 100644
--- a/libdrm/intel/intel_bufmgr_priv.h
+++ b/libdrm/intel/intel_bufmgr_priv.h
@@ -150,6 +150,15 @@ struct _dri_bufmgr {
      */
     int (*bo_set_tiling) (dri_bo *bo, uint32_t *tiling_mode);
     /**
+     * Get the current tiling (and resulting swizzling) mode for the bo.
+     *
+     * \param buf Buffer to get tiling mode for
+     * \param tiling_mode returned tiling mode
+     * \param swizzle_mode returned swizzling mode
+     */
+    int (*bo_get_tiling) (dri_bo *bo, uint32_t *tiling_mode,
+			  uint32_t *swizzle_mode);
+    /**
      * Create a visible name for a buffer which can be used by other apps
      *
      * \param buf Buffer to create a name for