Expose pin/unpin/set_tiling/flink APIs

2 files changed, 166 insertions, 0 deletions

diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h
index 1cf0d518..4d335210 100644
--- a/libdrm/intel/intel_bufmgr.h
+++ b/libdrm/intel/intel_bufmgr.h
@@ -61,6 +61,33 @@ struct intel_bufmgr {
     int (*emit_reloc)(dri_bo *reloc_buf,
 		      uint32_t read_domains, uint32_t write_domain,
 		      uint32_t delta, uint32_t offset, dri_bo *target);
+    /**
+     * Pin a buffer to the aperture and fix the offset until unpinned
+     *
+     * \param buf Buffer to pin
+     * \param alignment Required alignment for aperture, in bytes
+     */
+    int (*pin) (dri_bo *buf, uint32_t alignment);
+    /**
+     * Unpin a buffer from the aperture, allowing it to be removed
+     *
+     * \param buf Buffer to unpin
+     */
+    int (*unpin) (dri_bo *buf);
+    /**
+     * Ask that the buffer be placed in tiling mode
+     *
+     * \param buf Buffer to set tiling mode for
+     * \param tiling_mode desired, and returned tiling mode
+     */
+    int (*set_tiling) (dri_bo *bo, uint32_t *tiling_mode);
+    /**
+     * Create a visible name for a buffer which can be used by other apps
+     *
+     * \param buf Buffer to create a name for
+     * \param name Returned name
+     */
+    int (*flink) (dri_bo *buf, uint32_t *name);
 };
 
 /* intel_bufmgr_gem.c */
@@ -91,5 +118,13 @@ int intel_bo_emit_reloc(dri_bo *reloc_buf,
 			uint32_t read_domains, uint32_t write_domain,
 			uint32_t delta, uint32_t offset, dri_bo *target_buf);
 
+int intel_bo_pin(dri_bo *buf, uint32_t alignment);
+
+int intel_bo_unpin(dri_bo *buf);
+
+int intel_bo_set_tiling(dri_bo *buf, uint32_t *tiling_mode);
+
+int intel_bo_flink(dri_bo *buf, uint32_t *name);
+
 #endif /* INTEL_BUFMGR_GEM_H */
 
diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
index cdc2a7ac..22f8695d 100644
--- a/libdrm/intel/intel_bufmgr_gem.c
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -768,6 +768,81 @@ dri_gem_post_submit(dri_bo *batch_buf)
     bufmgr_gem->exec_count = 0;
 }
 
+static int
+dri_gem_pin(dri_bo *bo, uint32_t alignment)
+{
+    dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+    dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+    struct drm_i915_gem_pin pin;
+    int ret;
+
+    pin.handle = bo_gem->gem_handle;
+    pin.alignment = alignment;
+
+    ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PIN, &pin);
+    if (ret != 0)
+	return -errno;
+
+    bo->offset = pin.offset;
+    return 0;
+}
+
+static int
+dri_gem_unpin(dri_bo *bo)
+{
+    dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+    dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+    struct drm_i915_gem_unpin unpin;
+    int ret;
+
+    unpin.handle = bo_gem->gem_handle;
+
+    ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_UNPIN, &unpin);
+    if (ret != 0)
+	return -errno;
+
+    return 0;
+}
+
+static int
+dri_gem_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
+{
+    dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+    dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+    struct drm_i915_gem_set_tiling set_tiling;
+    int ret;
+
+    set_tiling.handle = bo_gem->gem_handle;
+    set_tiling.tiling_mode = *tiling_mode;
+
+    ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
+    if (ret != 0) {
+	*tiling_mode = I915_TILING_NONE;
+	return -errno;
+    }
+
+    *tiling_mode = set_tiling.tiling_mode;
+    return 0;
+}
+
+static int
+dri_gem_flink(dri_bo *bo, uint32_t *name)
+{
+    dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+    dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+    struct drm_gem_flink flink;
+    int ret;
+
+    flink.handle = bo_gem->gem_handle;
+
+    ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_FLINK, &flink);
+    if (ret != 0)
+	return -errno;
+
+    *name = flink.name;
+    return 0;
+}
+
 /**
  * Enables unlimited caching of buffer objects for reuse.
  *
@@ -832,6 +907,10 @@ intel_bufmgr_gem_init(int fd, int batch_size)
     bufmgr_gem->bufmgr.debug = 0;
     bufmgr_gem->bufmgr.check_aperture_space = dri_gem_check_aperture_space;
     bufmgr_gem->intel_bufmgr.emit_reloc = dri_gem_emit_reloc;
+    bufmgr_gem->intel_bufmgr.pin = dri_gem_pin;
+    bufmgr_gem->intel_bufmgr.unpin = dri_gem_unpin;
+    bufmgr_gem->intel_bufmgr.set_tiling = dri_gem_set_tiling;
+    bufmgr_gem->intel_bufmgr.flink = dri_gem_flink;
     /* Initialize the linked lists for BO reuse cache. */
     for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++)
 	bufmgr_gem->cache_bucket[i].tail = &bufmgr_gem->cache_bucket[i].head;
@@ -851,3 +930,55 @@ intel_bo_emit_reloc(dri_bo *reloc_buf,
     return intel_bufmgr->emit_reloc(reloc_buf, read_domains, write_domain,
 				    delta, offset, target_buf);
 }
+
+int
+intel_bo_pin(dri_bo *bo, uint32_t alignment)
+{
+    struct intel_bufmgr *intel_bufmgr;
+
+    intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+    if (intel_bufmgr->pin)
+	return intel_bufmgr->pin(bo, alignment);
+
+    return 0;
+}
+
+int
+intel_bo_unpin(dri_bo *bo)
+{
+    struct intel_bufmgr *intel_bufmgr;
+
+    intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+    if (intel_bufmgr->unpin)
+	return intel_bufmgr->unpin(bo);
+
+    return 0;
+}
+
+int intel_bo_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
+{
+    struct intel_bufmgr *intel_bufmgr;
+
+    intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+    if (intel_bufmgr->set_tiling)
+	return intel_bufmgr->set_tiling (bo, tiling_mode);
+
+    *tiling_mode = I915_TILING_NONE;
+    return 0;
+}
+
+int intel_bo_flink(dri_bo *bo, uint32_t *name)
+{
+    struct intel_bufmgr *intel_bufmgr;
+
+    intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+    if (intel_bufmgr->flink)
+	return intel_bufmgr->flink (bo, name);
+
+    return -ENODEV;
+}
+