diff options
Diffstat (limited to 'src/gallium/winsys/drm/i965/gem/i965_drm_api.c')
| -rw-r--r-- | src/gallium/winsys/drm/i965/gem/i965_drm_api.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/i965/gem/i965_drm_api.c b/src/gallium/winsys/drm/i965/gem/i965_drm_api.c new file mode 100644 index 00000000000..fc9678d2b62 --- /dev/null +++ b/src/gallium/winsys/drm/i965/gem/i965_drm_api.c @@ -0,0 +1,243 @@ + +#include <stdio.h> +#include "state_tracker/drm_api.h" + +#include "i965_drm_winsys.h" +#include "util/u_memory.h" + +#include "i965/brw_context.h" /* XXX: shouldn't be doing this */ +#include "i965/brw_screen.h" /* XXX: shouldn't be doing this */ + +#include "trace/tr_drm.h" + +/* + * Helper functions + */ + + +static void +i965_libdrm_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 i965_libdrm_buffer * +i965_libdrm_buffer_from_handle(struct i965_libdrm_winsys *idws, + const char* name, unsigned handle) +{ + struct i965_libdrm_buffer *buf = CALLOC_STRUCT(i965_libdrm_buffer); + uint32_t swizzle = 0; + + if (BRW_DUMP) + debug_printf("%s\n", __FUNCTION__); + + if (!buf) + return NULL; + pipe_reference_init(&buf->base.reference, 1); + buf->bo = drm_intel_bo_gem_create_from_name(idws->gem, name, handle); + buf->base.size = buf->bo->size; + buf->base.sws = &idws->base; + buf->flinked = TRUE; + buf->flink = handle; + + + if (!buf->bo) + goto err; + + drm_intel_bo_get_tiling(buf->bo, &buf->tiling, &swizzle); + if (buf->tiling != 0) + buf->map_gtt = TRUE; + + return buf; + +err: + FREE(buf); + return NULL; +} + + +/* + * Exported functions + */ + + +static struct pipe_texture * +i965_libdrm_texture_from_shared_handle(struct drm_api *api, + struct pipe_screen *screen, + struct pipe_texture *template, + const char* name, + unsigned pitch, + unsigned handle) +{ + /* XXX: this is silly -- there should be a way to get directly from + * the "drm_api" struct to ourselves, without peering into + * unrelated code: + */ + struct i965_libdrm_winsys *idws = i965_libdrm_winsys(brw_screen(screen)->sws); + struct i965_libdrm_buffer *buffer; + + if (BRW_DUMP) + debug_printf("%s %s pitch %d handle 0x%x\n", __FUNCTION__, + name, pitch, handle); + + buffer = i965_libdrm_buffer_from_handle(idws, name, handle); + if (!buffer) + return NULL; + + return brw_texture_blanket_winsys_buffer(screen, template, pitch, + buffer->tiling, + &buffer->base); +} + + +static boolean +i965_libdrm_shared_handle_from_texture(struct drm_api *api, + struct pipe_screen *screen, + struct pipe_texture *texture, + unsigned *pitch, + unsigned *handle) +{ + struct i965_libdrm_buffer *buf = NULL; + struct brw_winsys_buffer *buffer = NULL; + + if (BRW_DUMP) + debug_printf("%s\n", __FUNCTION__); + + if (!brw_texture_get_winsys_buffer(texture, &buffer, pitch)) + return FALSE; + + buf = i965_libdrm_buffer(buffer); + if (!buf->flinked) { + if (drm_intel_bo_flink(buf->bo, &buf->flink)) + return FALSE; + buf->flinked = TRUE; + } + + *handle = buf->flink; + + if (BRW_DUMP) + debug_printf(" -> pitch %d handle 0x%x\n", *pitch, *handle); + + return TRUE; +} + +static boolean +i965_libdrm_local_handle_from_texture(struct drm_api *api, + struct pipe_screen *screen, + struct pipe_texture *texture, + unsigned *pitch, + unsigned *handle) +{ + struct brw_winsys_buffer *buffer = NULL; + + if (BRW_DUMP) + debug_printf("%s\n", __FUNCTION__); + + if (!brw_texture_get_winsys_buffer(texture, &buffer, pitch)) + return FALSE; + + *handle = i965_libdrm_buffer(buffer)->bo->handle; + + if (BRW_DUMP) + debug_printf(" -> pitch %d handle 0x%x\n", *pitch, *handle); + + return TRUE; +} + +static void +i965_libdrm_winsys_destroy(struct brw_winsys_screen *iws) +{ + struct i965_libdrm_winsys *idws = i965_libdrm_winsys(iws); + + if (BRW_DUMP) + debug_printf("%s\n", __FUNCTION__); + + drm_intel_bufmgr_destroy(idws->gem); + + FREE(idws); +} + +static struct pipe_screen * +i965_libdrm_create_screen(struct drm_api *api, int drmFD, + struct drm_create_screen_arg *arg) +{ + struct i965_libdrm_winsys *idws; + unsigned int deviceID; + + debug_printf("%s\n", __FUNCTION__); + + if (arg != NULL) { + switch(arg->mode) { + case DRM_CREATE_NORMAL: + break; + default: + return NULL; + } + } + + idws = CALLOC_STRUCT(i965_libdrm_winsys); + if (!idws) + return NULL; + + i965_libdrm_get_device_id(&deviceID); + + i965_libdrm_winsys_init_buffer_functions(idws); + + idws->fd = drmFD; + idws->id = deviceID; + + idws->base.destroy = i965_libdrm_winsys_destroy; + + idws->gem = drm_intel_bufmgr_gem_init(idws->fd, BRW_BATCH_SIZE); + drm_intel_bufmgr_gem_enable_reuse(idws->gem); + + idws->send_cmd = !debug_get_bool_option("BRW_NO_HW", FALSE); + + return brw_create_screen(&idws->base, deviceID); +} + +static struct pipe_context * +i965_libdrm_create_context(struct drm_api *api, struct pipe_screen *screen) +{ + return brw_create_context(screen); +} + +static void +destroy(struct drm_api *api) +{ + if (BRW_DUMP) + debug_printf("%s\n", __FUNCTION__); + +} + +struct drm_api i965_libdrm_api = +{ + .create_context = i965_libdrm_create_context, + .create_screen = i965_libdrm_create_screen, + .texture_from_shared_handle = i965_libdrm_texture_from_shared_handle, + .shared_handle_from_texture = i965_libdrm_shared_handle_from_texture, + .local_handle_from_texture = i965_libdrm_local_handle_from_texture, + .destroy = destroy, +}; + +struct drm_api * +drm_api_create() +{ + return trace_drm_create(&i965_libdrm_api); +} |