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#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);
(void) shutup_gcc;
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;
}
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