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#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 void
destroy(struct drm_api *api)
{
if (BRW_DUMP)
debug_printf("%s\n", __FUNCTION__);
}
struct drm_api i965_libdrm_api =
{
.name = "i965",
.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);
}
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