Import minigbm
Minigbm is a gbm implementation for a few DRM targets. Currently the
targets are:
- cirrus
- exynos
- gma500
- i915
- rockchip
- tegra
- udl
Right some targets are controlled with GBM_{TARGET} flags. I would
like to get to a place where we can just build all the targets in a
single library, but we need the drm headers for all targets for that
to happen so this needs more thinking.
BUG=chromium:394868,chromium:402597,chromium:413947,chromium:412508
TEST=unit tests, which I will need to import later
Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Change-Id: I36ae07f2a59827a807e19e1432891ca196b28803
Reviewed-on: https://chromium-review.googlesource.com/218030
diff --git a/gbm.c b/gbm.c
new file mode 100644
index 0000000..8a18d13
--- /dev/null
+++ b/gbm.c
@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <xf86drm.h>
+
+#include "gbm_priv.h"
+#include "util.h"
+
+/*
+gbm_buffer_base.cc: gbm_bo_get_width(bo),
+gbm_buffer_base.cc: gbm_bo_get_height(bo),
+gbm_buffer_base.cc: gbm_bo_get_stride(bo),
+gbm_buffer_base.cc: gbm_bo_get_handle(bo).u32,
+gbm_buffer_base.cc: return gbm_bo_get_handle(bo_).u32;
+gbm_buffer_base.cc: return gfx::Size(gbm_bo_get_width(bo_), gbm_bo_get_height(bo_));
+gbm_buffer.cc: gbm_bo_destroy(bo());
+gbm_buffer.cc: gbm_bo* bo = gbm_bo_create(device,
+gbm_surface.cc: gbm_bo_set_user_data(bo, this, GbmSurfaceBuffer::Destroy);
+gbm_surface.cc: static_cast<GbmSurfaceBuffer*>(gbm_bo_get_user_data(buffer)));
+gbm_surface.cc: gbm_surface_release_buffer(native_surface_, current_buffer_);
+gbm_surface.cc: gbm_surface_destroy(native_surface_);
+gbm_surface.cc: native_surface_ = gbm_surface_create(
+gbm_surface.cc: gbm_bo* pending_buffer = gbm_surface_lock_front_buffer(native_surface_);
+gbm_surface.cc: gbm_surface_release_buffer(native_surface_, current_buffer_);
+ozone_platform_gbm.cc: device_(gbm_create_device(dri_->get_fd())) {}
+ozone_platform_gbm.cc: gbm_device_destroy(device_);
+*/
+
+extern struct gbm_driver gbm_driver_cirrus;
+#ifdef GBM_EXYNOS
+extern struct gbm_driver gbm_driver_exynos;
+#endif
+extern struct gbm_driver gbm_driver_gma500;
+#ifdef GBM_I915
+extern struct gbm_driver gbm_driver_i915;
+#endif
+#ifdef GBM_ROCKCHIP
+extern struct gbm_driver gbm_driver_rockchip;
+#endif
+#ifdef GBM_TEGRA
+extern struct gbm_driver gbm_driver_tegra;
+#endif
+extern struct gbm_driver gbm_driver_udl;
+
+static struct gbm_driver *gbm_get_driver(int fd)
+{
+ drmVersionPtr drm_version;
+ unsigned int i;
+
+ drm_version = drmGetVersion(fd);
+
+ if (!drm_version)
+ return NULL;
+
+ struct gbm_driver *driver_list[] = {
+ &gbm_driver_cirrus,
+#ifdef GBM_EXYNOS
+ &gbm_driver_exynos,
+#endif
+ &gbm_driver_gma500,
+#ifdef GBM_I915
+ &gbm_driver_i915,
+#endif
+#ifdef GBM_ROCKCHIP
+ &gbm_driver_rockchip,
+#endif
+#ifdef GBM_TEGRA
+ &gbm_driver_tegra,
+#endif
+ &gbm_driver_udl,
+ };
+
+ for(i = 0; i < ARRAY_SIZE(driver_list); i++)
+ if (!strcmp(drm_version->name, driver_list[i]->name))
+ {
+ drmFreeVersion(drm_version);
+ return driver_list[i];
+ }
+
+ drmFreeVersion(drm_version);
+ return NULL;
+}
+
+PUBLIC int
+gbm_device_get_fd(struct gbm_device *gbm)
+{
+ return gbm->fd;
+}
+
+PUBLIC const char *
+gbm_device_get_backend_name(struct gbm_device *gbm)
+{
+ return gbm->driver->name;
+}
+
+PUBLIC int
+gbm_device_is_format_supported(struct gbm_device *gbm,
+ uint32_t format, uint32_t usage)
+{
+ unsigned i;
+
+ if (format == GBM_BO_FORMAT_XRGB8888)
+ format = GBM_FORMAT_XRGB8888;
+ if (format == GBM_BO_FORMAT_ARGB8888)
+ format = GBM_FORMAT_ARGB8888;
+
+ if (usage & GBM_BO_USE_CURSOR &&
+ usage & GBM_BO_USE_RENDERING)
+ return 0;
+
+ for(i = 0 ; i < ARRAY_SIZE(gbm->driver->format_list); i++)
+ {
+ if (!gbm->driver->format_list[i].format)
+ break;
+
+ if (gbm->driver->format_list[i].format == format &&
+ (gbm->driver->format_list[i].usage & usage) == usage)
+ return 1;
+ }
+
+ return 0;
+}
+
+PUBLIC struct gbm_device *gbm_create_device(int fd)
+{
+ struct gbm_device *gbm;
+ int ret;
+
+ gbm = (struct gbm_device*) malloc(sizeof(*gbm));
+ if (!gbm)
+ return NULL;
+
+ gbm->fd = fd;
+
+ gbm->driver = gbm_get_driver(fd);
+ if (!gbm->driver) {
+ free(gbm);
+ return NULL;
+ }
+
+ if (gbm->driver->init) {
+ ret = gbm->driver->init(gbm);
+ if (ret) {
+ free(gbm);
+ return NULL;
+ }
+ }
+
+ return gbm;
+}
+
+PUBLIC void gbm_device_destroy(struct gbm_device *gbm)
+{
+ if (gbm->driver->close)
+ gbm->driver->close(gbm);
+ free(gbm);
+}
+
+PUBLIC struct gbm_surface *gbm_surface_create(struct gbm_device *gbm, uint32_t width, uint32_t height, uint32_t format, uint32_t flags)
+{
+ struct gbm_surface *surface = (struct gbm_surface*) malloc(sizeof(*surface));
+ if (!surface)
+ return NULL;
+
+ return surface;
+}
+
+PUBLIC void gbm_surface_destroy(struct gbm_surface *surface)
+{
+ free(surface);
+}
+
+PUBLIC struct gbm_bo *gbm_surface_lock_front_buffer(struct gbm_surface *surface)
+{
+ return NULL;
+}
+
+PUBLIC void gbm_surface_release_buffer(struct gbm_surface *surface, struct gbm_bo *bo)
+{
+}
+
+PUBLIC struct gbm_bo *gbm_bo_create(struct gbm_device *gbm, uint32_t width, uint32_t height, uint32_t format, uint32_t flags)
+{
+ struct gbm_bo *bo;
+ int ret;
+
+ bo = (struct gbm_bo*) malloc(sizeof(*bo));
+ if (!bo)
+ return NULL;
+
+ bo->gbm = gbm;
+ bo->width = width;
+ bo->height = height;
+ bo->stride = 0;
+ bo->format = format;
+ bo->handle.u32 = 0;
+ bo->destroy_user_data = NULL;
+ bo->user_data = NULL;
+
+ ret = gbm->driver->bo_create(bo, width, height, format, flags);
+ if (ret) {
+ free(bo);
+ return NULL;
+ }
+
+ return bo;
+}
+
+PUBLIC void gbm_bo_destroy(struct gbm_bo *bo)
+{
+ if (bo->destroy_user_data) {
+ bo->destroy_user_data(bo, bo->user_data);
+ bo->destroy_user_data = NULL;
+ bo->user_data = NULL;
+ }
+
+ bo->gbm->driver->bo_destroy(bo);
+ free(bo);
+}
+
+PUBLIC uint32_t
+gbm_bo_get_width(struct gbm_bo *bo)
+{
+ return bo->width;
+}
+
+PUBLIC uint32_t
+gbm_bo_get_height(struct gbm_bo *bo)
+{
+ return bo->height;
+}
+
+PUBLIC uint32_t
+gbm_bo_get_stride(struct gbm_bo *bo)
+{
+ return bo->stride;
+}
+
+PUBLIC uint32_t
+gbm_bo_get_format(struct gbm_bo *bo)
+{
+ return bo->format;
+}
+
+PUBLIC struct gbm_device *
+gbm_bo_get_device(struct gbm_bo *bo)
+{
+ return bo->gbm;
+}
+
+PUBLIC union gbm_bo_handle
+gbm_bo_get_handle(struct gbm_bo *bo)
+{
+ return bo->handle;
+}
+
+PUBLIC int
+gbm_bo_get_fd(struct gbm_bo *bo)
+{
+ return bo->gbm->fd;
+}
+
+PUBLIC void
+gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
+ void (*destroy_user_data)(struct gbm_bo *, void *))
+{
+ bo->user_data = data;
+ bo->destroy_user_data = destroy_user_data;
+}
+
+PUBLIC void *
+gbm_bo_get_user_data(struct gbm_bo *bo)
+{
+ return bo->user_data;
+}