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#ifndef INTEL_BATCHBUFFER_H
#define INTEL_BATCHBUFFER_H
#include <assert.h>
#include "intel_bufmgr.h"
#include "intel_reg.h"
#define BATCH_SZ 4096
#define BATCH_RESERVED 16
struct intel_batchbuffer
{
drm_intel_bufmgr *bufmgr;
uint32_t devid;
drm_intel_bo *bo;
uint8_t *buffer;
uint8_t *map;
uint8_t *ptr;
/* debug stuff */
struct {
uint8_t *start_ptr;
unsigned int total;
} emit;
unsigned int size;
};
struct intel_batchbuffer *intel_batchbuffer_alloc(drm_intel_bufmgr *bufmgr,
uint32_t devid);
void intel_batchbuffer_free(struct intel_batchbuffer *batch);
void intel_batchbuffer_flush(struct intel_batchbuffer *batch);
void intel_batchbuffer_reset(struct intel_batchbuffer *batch);
void intel_batchbuffer_data(struct intel_batchbuffer *batch,
const void *data, unsigned int bytes);
void intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
drm_intel_bo *buffer,
uint32_t delta,
uint32_t read_domains,
uint32_t write_domain);
/* Inline functions - might actually be better off with these
* non-inlined. Certainly better off switching all command packets to
* be passed as structs rather than dwords, but that's a little bit of
* work...
*/
static inline int
intel_batchbuffer_space(struct intel_batchbuffer *batch)
{
return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map);
}
static inline void
intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch, uint32_t dword)
{
assert(batch->map);
assert(intel_batchbuffer_space(batch) >= 4);
*(uint32_t *) (batch->ptr) = dword;
batch->ptr += 4;
}
static inline void
intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
unsigned int sz)
{
assert(sz < batch->size - 8);
if (intel_batchbuffer_space(batch) < sz)
intel_batchbuffer_flush(batch);
}
/* Here are the crusty old macros, to be removed:
*/
#define BATCH_LOCALS
#define BEGIN_BATCH(n) do { \
intel_batchbuffer_require_space(batch, (n)*4); \
assert(batch->emit.start_ptr == NULL); \
batch->emit.total = (n) * 4; \
batch->emit.start_ptr = batch->ptr; \
} while (0)
#define OUT_BATCH(d) intel_batchbuffer_emit_dword(batch, d)
#define OUT_RELOC(buf, read_domains, write_domain, delta) do { \
assert((delta) >= 0); \
intel_batchbuffer_emit_reloc(batch, buf, delta, \
read_domains, write_domain); \
} while (0)
#define ADVANCE_BATCH() do { \
unsigned int _n = batch->ptr - batch->emit.start_ptr; \
assert(batch->emit.start_ptr != NULL); \
if (_n != batch->emit.total) { \
fprintf(stderr, \
"ADVANCE_BATCH: %d of %d dwords emitted\n", \
_n, batch->emit.total); \
abort(); \
} \
batch->emit.start_ptr = NULL; \
} while(0)
static inline void
intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch)
{
intel_batchbuffer_require_space(batch, 4);
intel_batchbuffer_emit_dword(batch, MI_FLUSH);
}
void intel_copy_bo(struct intel_batchbuffer *batch,
drm_intel_bo *dst_bo, drm_intel_bo *src_bo,
int width, int height);
#endif
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