diff options
Diffstat (limited to 'src/gallium/winsys/drm/intel/gem/intel_drm_api.c')
| -rw-r--r-- | src/gallium/winsys/drm/intel/gem/intel_drm_api.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/intel/gem/intel_drm_api.c b/src/gallium/winsys/drm/intel/gem/intel_drm_api.c new file mode 100644 index 0000000000..4c5a1d2ea8 --- /dev/null +++ b/src/gallium/winsys/drm/intel/gem/intel_drm_api.c @@ -0,0 +1,202 @@ + +#include "state_tracker/drm_api.h" + +#include "intel_drm_winsys.h" +#include "util/u_memory.h" + +#include "i915simple/i915_context.h" +#include "i915simple/i915_screen.h" + + +/* + * Helper functions + */ + + +static void +intel_drm_get_device_id(unsigned int *device_id) +{ + char path[512]; + FILE *file; + void *shutup_gcc; + + /* + * FIXME: Fix this up to use a drm ioctl or whatever. + */ + + snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device"); + file = fopen(path, "r"); + if (!file) { + return; + } + + shutup_gcc = fgets(path, sizeof(path), file); + sscanf(path, "%x", device_id); + fclose(file); +} + +static struct intel_buffer * +intel_drm_buffer_from_handle(struct intel_drm_winsys *idws, + const char* name, unsigned handle) +{ + struct intel_drm_buffer *buf = CALLOC_STRUCT(intel_drm_buffer); + + if (!buf) + return NULL; + + buf->magic = 0xDEAD1337; + buf->bo = drm_intel_bo_gem_create_from_name(idws->pools.gem, name, handle); + buf->flinked = TRUE; + buf->flink = handle; + + if (!buf->bo) + goto err; + + return (struct intel_buffer *)buf; + +err: + FREE(buf); + return NULL; +} + + +/* + * Exported functions + */ + + +static struct pipe_texture * +intel_drm_texture_from_shared_handle(struct drm_api *api, + struct pipe_screen *screen, + struct pipe_texture *templ, + const char* name, + unsigned pitch, + unsigned handle) +{ + struct intel_drm_winsys *idws = intel_drm_winsys(i915_screen(screen)->iws); + struct intel_buffer *buffer; + + buffer = intel_drm_buffer_from_handle(idws, name, handle); + if (!buffer) + return NULL; + + return i915_texture_blanket_intel(screen, templ, pitch, buffer); +} + +static boolean +intel_drm_shared_handle_from_texture(struct drm_api *api, + struct pipe_screen *screen, + struct pipe_texture *texture, + unsigned *pitch, + unsigned *handle) +{ + struct intel_drm_buffer *buf = NULL; + struct intel_buffer *buffer = NULL; + if (!i915_get_texture_buffer_intel(texture, &buffer, pitch)) + return FALSE; + + buf = intel_drm_buffer(buffer); + if (!buf->flinked) { + if (drm_intel_bo_flink(buf->bo, &buf->flink)) + return FALSE; + buf->flinked = TRUE; + } + + *handle = buf->flink; + + return TRUE; +} + +static boolean +intel_drm_local_handle_from_texture(struct drm_api *api, + struct pipe_screen *screen, + struct pipe_texture *texture, + unsigned *pitch, + unsigned *handle) +{ + struct intel_buffer *buffer = NULL; + if (!i915_get_texture_buffer_intel(texture, &buffer, pitch)) + return FALSE; + + *handle = intel_drm_buffer(buffer)->bo->handle; + + return TRUE; +} + +static void +intel_drm_winsys_destroy(struct intel_winsys *iws) +{ + struct intel_drm_winsys *idws = intel_drm_winsys(iws); + + drm_intel_bufmgr_destroy(idws->pools.gem); + + FREE(idws); +} + +static struct pipe_screen * +intel_drm_create_screen(struct drm_api *api, int drmFD, + struct drm_create_screen_arg *arg) +{ + struct intel_drm_winsys *idws; + unsigned int deviceID; + + if (arg != NULL) { + switch(arg->mode) { + case DRM_CREATE_NORMAL: + break; + default: + return NULL; + } + } + + idws = CALLOC_STRUCT(intel_drm_winsys); + if (!idws) + return NULL; + + intel_drm_get_device_id(&deviceID); + + intel_drm_winsys_init_batchbuffer_functions(idws); + intel_drm_winsys_init_buffer_functions(idws); + intel_drm_winsys_init_fence_functions(idws); + + idws->fd = drmFD; + idws->id = deviceID; + idws->max_batch_size = 16 * 4096; + + idws->base.destroy = intel_drm_winsys_destroy; + + idws->pools.gem = drm_intel_bufmgr_gem_init(idws->fd, idws->max_batch_size); + + idws->softpipe = FALSE; + idws->dump_cmd = debug_get_bool_option("INTEL_DUMP_CMD", FALSE); + + return i915_create_screen(&idws->base, deviceID); +} + +static struct pipe_context * +intel_drm_create_context(struct drm_api *api, struct pipe_screen *screen) +{ + return i915_create_context(screen); +} + +static void +destroy(struct drm_api *api) +{ + +} + +struct drm_api intel_drm_api = +{ + .create_context = intel_drm_create_context, + .create_screen = intel_drm_create_screen, + .texture_from_shared_handle = intel_drm_texture_from_shared_handle, + .shared_handle_from_texture = intel_drm_shared_handle_from_texture, + .local_handle_from_texture = intel_drm_local_handle_from_texture, + .destroy = destroy, +}; + +struct drm_api * +drm_api_create() +{ + return &intel_drm_api; +} |