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#include "i965_drm_winsys.h"
#include "util/u_memory.h"
#include "i915_drm.h"
#include "intel_bufmgr.h"
const char *names[BRW_BUFFER_TYPE_MAX] = {
"texture",
"scanout",
"vertex",
"curbe",
"query",
"shader_constants",
"wm_scratch",
"batch",
"state_cache",
};
static struct brw_winsys_buffer *
i965_libdrm_bo_alloc( struct brw_winsys_screen *sws,
enum brw_buffer_type type,
unsigned size,
unsigned alignment )
{
struct i965_libdrm_winsys *idws = i965_libdrm_winsys(sws);
struct i965_libdrm_buffer *buf;
buf = CALLOC_STRUCT(i965_libdrm_buffer);
if (!buf)
return NULL;
switch (type) {
case BRW_BUFFER_TYPE_TEXTURE:
break;
case BRW_BUFFER_TYPE_VERTEX:
buf->map_gtt = TRUE;
break;
case BRW_BUFFER_TYPE_SCANOUT:
buf->map_gtt = TRUE;
break;
default:
break;
}
buf->bo = drm_intel_bo_alloc(idws->gem,
names[type],
size,
alignment);
if (!buf->bo)
goto err;
buf->base.offset = &buf->bo->offset;
buf->base.size = size;
return &buf->base;
err:
assert(0);
FREE(buf);
return NULL;
}
/* Reference and unreference buffers:
*/
static void
i965_libdrm_bo_reference( struct brw_winsys_buffer *buffer )
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
/* I think we have to refcount ourselves and then just pass through
* the final dereference to the bo on destruction.
*/
buf->cheesy_refcount++;
}
static void
i965_libdrm_bo_unreference( struct brw_winsys_buffer *buffer )
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
if (--buf->cheesy_refcount == 0) {
drm_intel_bo_unreference(buf->bo);
FREE(buffer);
}
}
/* XXX: parameter names!!
*/
static int
i965_libdrm_bo_emit_reloc( struct brw_winsys_buffer *buffer,
unsigned domain,
unsigned a,
unsigned b,
unsigned offset,
struct brw_winsys_buffer *buffer2)
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
struct i965_libdrm_buffer *buf2 = i965_libdrm_buffer(buffer2);
int ret;
ret = dri_bo_emit_reloc( buf->bo, domain, a, b, offset, buf2->bo );
if (ret)
return -1;
return 0;
}
static int
i965_libdrm_bo_exec( struct brw_winsys_buffer *buffer,
unsigned bytes_used )
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
int ret;
ret = dri_bo_exec(buf->bo, bytes_used, NULL, 0, 0);
if (ret)
return -1;
return 0;
}
static int
i965_libdrm_bo_subdata(struct brw_winsys_buffer *buffer,
size_t offset,
size_t size,
const void *data)
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
int ret;
/* XXX: use bo_map_gtt/memcpy/unmap_gtt under some circumstances???
*/
ret = drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
if (ret)
return -1;
return 0;
}
static boolean
i965_libdrm_bo_is_busy(struct brw_winsys_buffer *buffer)
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
return drm_intel_bo_busy(buf->bo);
}
static boolean
i965_libdrm_bo_references(struct brw_winsys_buffer *a,
struct brw_winsys_buffer *b)
{
struct i965_libdrm_buffer *bufa = i965_libdrm_buffer(a);
struct i965_libdrm_buffer *bufb = i965_libdrm_buffer(b);
/* XXX: can't find this func:
*/
return drm_intel_bo_references(bufa->bo, bufb->bo);
}
/* XXX: couldn't this be handled by returning true/false on
* bo_emit_reloc?
*/
static boolean
i965_libdrm_check_aperture_space( struct brw_winsys_screen *iws,
struct brw_winsys_buffer **buffers,
unsigned count )
{
static drm_intel_bo *bos[128];
int i;
if (count > Elements(bos)) {
assert(0);
return FALSE;
}
for (i = 0; i < count; i++)
bos[i] = i965_libdrm_buffer(buffers[i])->bo;
return dri_bufmgr_check_aperture_space(bos, count);
}
/**
* Map a buffer.
*/
static void *
i965_libdrm_bo_map(struct brw_winsys_buffer *buffer,
boolean write)
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
int ret;
if (!buf->map_count) {
if (buf->map_gtt) {
ret = drm_intel_gem_bo_map_gtt(buf->bo);
if (ret)
return NULL;
}
else {
ret = drm_intel_bo_map(buf->bo, write);
if (ret)
return NULL;
}
}
buf->map_count++;
return buf->bo->virtual;
}
/**
* Unmap a buffer.
*/
static void
i965_libdrm_bo_unmap(struct brw_winsys_buffer *buffer)
{
struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
if (--buf->map_count > 0)
return;
if (buf->map_gtt)
drm_intel_gem_bo_unmap_gtt(buf->bo);
else
drm_intel_bo_unmap(buf->bo);
}
void
i965_libdrm_winsys_init_buffer_functions(struct i965_libdrm_winsys *idws)
{
idws->base.bo_alloc = i965_libdrm_bo_alloc;
idws->base.bo_reference = i965_libdrm_bo_reference;
idws->base.bo_unreference = i965_libdrm_bo_unreference;
idws->base.bo_emit_reloc = i965_libdrm_bo_emit_reloc;
idws->base.bo_exec = i965_libdrm_bo_exec;
idws->base.bo_subdata = i965_libdrm_bo_subdata;
idws->base.bo_is_busy = i965_libdrm_bo_is_busy;
idws->base.bo_references = i965_libdrm_bo_references;
idws->base.check_aperture_space = i965_libdrm_check_aperture_space;
idws->base.bo_map = i965_libdrm_bo_map;
idws->base.bo_unmap = i965_libdrm_bo_unmap;
}
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