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#include "frontend/drm_driver.h"
#include "i915_drm_winsys.h"
#include "util/u_memory.h"
#include "drm-uapi/i915_drm.h"
static char *i915_drm_type_to_name(enum i915_winsys_buffer_type type)
{
char *name;
if (type == I915_NEW_TEXTURE) {
name = "gallium3d_texture";
} else if (type == I915_NEW_VERTEX) {
name = "gallium3d_vertex";
} else if (type == I915_NEW_SCANOUT) {
name = "gallium3d_scanout";
} else {
assert(0);
name = "gallium3d_unknown";
}
return name;
}
static struct i915_winsys_buffer *
i915_drm_buffer_create(struct i915_winsys *iws,
unsigned size,
enum i915_winsys_buffer_type type)
{
struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
struct i915_drm_winsys *idws = i915_drm_winsys(iws);
if (!buf)
return NULL;
buf->magic = 0xDEAD1337;
buf->flinked = FALSE;
buf->flink = 0;
buf->bo = drm_intel_bo_alloc(idws->gem_manager,
i915_drm_type_to_name(type), size, 0);
if (!buf->bo)
goto err;
return (struct i915_winsys_buffer *)buf;
err:
assert(0);
FREE(buf);
return NULL;
}
static struct i915_winsys_buffer *
i915_drm_buffer_create_tiled(struct i915_winsys *iws,
unsigned *stride, unsigned height,
enum i915_winsys_buffer_tile *tiling,
enum i915_winsys_buffer_type type)
{
struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
struct i915_drm_winsys *idws = i915_drm_winsys(iws);
unsigned long pitch = 0;
uint32_t tiling_mode = *tiling;
if (!buf)
return NULL;
buf->magic = 0xDEAD1337;
buf->flinked = FALSE;
buf->flink = 0;
buf->bo = drm_intel_bo_alloc_tiled(idws->gem_manager,
i915_drm_type_to_name(type),
*stride, height, 1,
&tiling_mode, &pitch, 0);
if (!buf->bo)
goto err;
*stride = pitch;
*tiling = tiling_mode;
return (struct i915_winsys_buffer *)buf;
err:
assert(0);
FREE(buf);
return NULL;
}
static struct i915_winsys_buffer *
i915_drm_buffer_from_handle(struct i915_winsys *iws,
struct winsys_handle *whandle,
unsigned height,
enum i915_winsys_buffer_tile *tiling,
unsigned *stride)
{
struct i915_drm_winsys *idws = i915_drm_winsys(iws);
struct i915_drm_buffer *buf;
uint32_t tile = 0, swizzle = 0;
if ((whandle->type != WINSYS_HANDLE_TYPE_SHARED) && (whandle->type != WINSYS_HANDLE_TYPE_FD))
return NULL;
if (whandle->offset != 0)
return NULL;
buf = CALLOC_STRUCT(i915_drm_buffer);
if (!buf)
return NULL;
buf->magic = 0xDEAD1337;
if (whandle->type == WINSYS_HANDLE_TYPE_SHARED)
buf->bo = drm_intel_bo_gem_create_from_name(idws->gem_manager, "gallium3d_from_handle", whandle->handle);
else if (whandle->type == WINSYS_HANDLE_TYPE_FD) {
int fd = (int) whandle->handle;
buf->bo = drm_intel_bo_gem_create_from_prime(idws->gem_manager, fd, height * whandle->stride);
}
buf->flinked = TRUE;
buf->flink = whandle->handle;
if (!buf->bo)
goto err;
drm_intel_bo_get_tiling(buf->bo, &tile, &swizzle);
*stride = whandle->stride;
*tiling = tile;
return (struct i915_winsys_buffer *)buf;
err:
FREE(buf);
return NULL;
}
static boolean
i915_drm_buffer_get_handle(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer,
struct winsys_handle *whandle,
unsigned stride)
{
struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
if (whandle->type == WINSYS_HANDLE_TYPE_SHARED) {
if (!buf->flinked) {
if (drm_intel_bo_flink(buf->bo, &buf->flink))
return FALSE;
buf->flinked = TRUE;
}
whandle->handle = buf->flink;
} else if (whandle->type == WINSYS_HANDLE_TYPE_KMS) {
whandle->handle = buf->bo->handle;
} else if (whandle->type == WINSYS_HANDLE_TYPE_FD) {
int fd;
if (drm_intel_bo_gem_export_to_prime(buf->bo, &fd))
return FALSE;
whandle->handle = fd;
} else {
assert(!"unknown usage");
return FALSE;
}
whandle->stride = stride;
return TRUE;
}
static void *
i915_drm_buffer_map(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer,
boolean write)
{
struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
drm_intel_bo *bo = intel_bo(buffer);
int ret = 0;
assert(bo);
if (buf->map_count)
goto out;
ret = drm_intel_gem_bo_map_gtt(bo);
buf->ptr = bo->virtual;
assert(ret == 0);
out:
if (ret)
return NULL;
buf->map_count++;
return buf->ptr;
}
static void
i915_drm_buffer_unmap(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer)
{
struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
if (--buf->map_count)
return;
drm_intel_gem_bo_unmap_gtt(intel_bo(buffer));
}
static int
i915_drm_buffer_write(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer,
size_t offset,
size_t size,
const void *data)
{
struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
return drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
}
static void
i915_drm_buffer_destroy(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer)
{
drm_intel_bo_unreference(intel_bo(buffer));
#ifdef DEBUG
i915_drm_buffer(buffer)->magic = 0;
i915_drm_buffer(buffer)->bo = NULL;
#endif
FREE(buffer);
}
static boolean
i915_drm_buffer_is_busy(struct i915_winsys *iws,
struct i915_winsys_buffer *buffer)
{
struct i915_drm_buffer* i915_buffer = i915_drm_buffer(buffer);
if (!i915_buffer)
return FALSE;
return drm_intel_bo_busy(i915_buffer->bo);
}
void
i915_drm_winsys_init_buffer_functions(struct i915_drm_winsys *idws)
{
idws->base.buffer_create = i915_drm_buffer_create;
idws->base.buffer_create_tiled = i915_drm_buffer_create_tiled;
idws->base.buffer_from_handle = i915_drm_buffer_from_handle;
idws->base.buffer_get_handle = i915_drm_buffer_get_handle;
idws->base.buffer_map = i915_drm_buffer_map;
idws->base.buffer_unmap = i915_drm_buffer_unmap;
idws->base.buffer_write = i915_drm_buffer_write;
idws->base.buffer_destroy = i915_drm_buffer_destroy;
idws->base.buffer_is_busy = i915_drm_buffer_is_busy;
}
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