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-rw-r--r--libdrm/radeon/radeon_bo_gem.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/libdrm/radeon/radeon_bo_gem.c b/libdrm/radeon/radeon_bo_gem.c
new file mode 100644
index 00000000..fdf852a2
--- /dev/null
+++ b/libdrm/radeon/radeon_bo_gem.c
@@ -0,0 +1,208 @@
+/*
+ * Copyright © 2008 Dave Airlie
+ * Copyright © 2008 Jérôme Glisse
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
+ * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ */
+/*
+ * Authors:
+ * Dave Airlie
+ * Jérôme Glisse <glisse@freedesktop.org>
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include "xf86drm.h"
+#include "drm.h"
+#include "radeon_drm.h"
+#include "radeon_bo.h"
+#include "radeon_bo_gem.h"
+
+struct radeon_bo_gem {
+ struct radeon_bo base;
+ uint32_t name;
+ int map_count;
+};
+
+struct bo_manager_gem {
+ struct radeon_bo_manager base;
+};
+
+static struct radeon_bo *bo_open(struct radeon_bo_manager *bom,
+ uint32_t handle,
+ uint32_t size,
+ uint32_t alignment,
+ uint32_t domains,
+ uint32_t flags)
+{
+ struct radeon_bo_gem *bo;
+ int r;
+
+ bo = (struct radeon_bo_gem*)calloc(1, sizeof(struct radeon_bo_gem));
+ if (bo == NULL) {
+ return NULL;
+ }
+
+ bo->base.bom = bom;
+ bo->base.handle = 0;
+ bo->base.size = size;
+ bo->base.alignment = alignment;
+ bo->base.domains = domains;
+ bo->base.flags = flags;
+ bo->base.ptr = NULL;
+ bo->map_count = 0;
+ if (handle) {
+ struct drm_gem_open open_arg;
+
+ memset(&open_arg, 0, sizeof(open_arg));
+ open_arg.name = handle;
+ r = ioctl(bom->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
+ if (r != 0) {
+ free(bo);
+ return NULL;
+ }
+ bo->base.handle = open_arg.handle;
+ bo->base.size = open_arg.size;
+ bo->name = handle;
+ } else {
+ struct drm_radeon_gem_create args;
+
+ args.size = size;
+ args.alignment = alignment;
+ args.initial_domain = bo->base.domains;
+ args.no_backing_store = 0;
+ args.handle = 0;
+ r = drmCommandWriteRead(bom->fd, DRM_RADEON_GEM_CREATE,
+ &args, sizeof(args));
+ bo->base.handle = args.handle;
+ if (r) {
+ fprintf(stderr, "Failed to allocate :\n");
+ fprintf(stderr, " size : %d bytes\n", size);
+ fprintf(stderr, " alignment : %d bytes\n", alignment);
+ fprintf(stderr, " domains : %d\n", bo->base.domains);
+ free(bo);
+ return NULL;
+ }
+ }
+ radeon_bo_ref((struct radeon_bo*)bo);
+ return (struct radeon_bo*)bo;
+}
+
+static void bo_ref(struct radeon_bo *bo)
+{
+}
+
+static struct radeon_bo *bo_unref(struct radeon_bo *bo)
+{
+ struct radeon_bo_gem *bo_gem = (struct radeon_bo_gem*)bo;
+ struct drm_gem_close args;
+
+ if (bo == NULL) {
+ return NULL;
+ }
+ if (bo->cref) {
+ return bo;
+ }
+ if (bo_gem->map_count) {
+ munmap(bo->ptr, bo->size);
+ }
+
+ /* close object */
+ args.handle = bo->handle;
+ ioctl(bo->bom->fd, DRM_IOCTL_GEM_CLOSE, &args);
+ memset(bo_gem, 0, sizeof(struct radeon_bo_gem));
+ free(bo_gem);
+ return NULL;
+}
+
+static int bo_map(struct radeon_bo *bo, int write)
+{
+ struct radeon_bo_gem *bo_gem = (struct radeon_bo_gem*)bo;
+ struct drm_radeon_gem_mmap args;
+ int r;
+
+ if (bo_gem->map_count++ != 0) {
+ return 0;
+ }
+ bo->ptr = NULL;
+ args.handle = bo->handle;
+ args.offset = 0;
+ args.size = (uint64_t)bo->size;
+ r = drmCommandWriteRead(bo->bom->fd,
+ DRM_RADEON_GEM_MMAP,
+ &args,
+ sizeof(args));
+ if (!r) {
+ bo->ptr = (void *)(unsigned long)args.addr_ptr;
+ } else {
+ fprintf(stderr, "error mapping %p 0x%08X (error = %d)\n",
+ bo, bo->handle, r);
+ }
+ return r;
+}
+
+static int bo_unmap(struct radeon_bo *bo)
+{
+ struct radeon_bo_gem *bo_gem = (struct radeon_bo_gem*)bo;
+
+ if (--bo_gem->map_count > 0) {
+ return 0;
+ }
+ munmap(bo->ptr, bo->size);
+ bo->ptr = NULL;
+ return 0;
+}
+
+static struct radeon_bo_funcs bo_gem_funcs = {
+ bo_open,
+ bo_ref,
+ bo_unref,
+ bo_map,
+ bo_unmap
+};
+
+struct radeon_bo_manager *radeon_bo_manager_gem_ctor(int fd)
+{
+ struct bo_manager_gem *bomg;
+
+ bomg = (struct bo_manager_gem*)calloc(1, sizeof(struct bo_manager_gem));
+ if (bomg == NULL) {
+ return NULL;
+ }
+ bomg->base.funcs = &bo_gem_funcs;
+ bomg->base.fd = fd;
+ return (struct radeon_bo_manager*)bomg;
+}
+
+void radeon_bo_manager_gem_dtor(struct radeon_bo_manager *bom)
+{
+ struct bo_manager_gem *bomg = (struct bo_manager_gem*)bom;
+
+ if (bom == NULL) {
+ return;
+ }
+ free(bomg);
+}