Merge branch 'modesetting-gem'

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);
+}