#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
+#include <time.h>
+
#include "util/u_atomic.h"
#include "util/list.h"
struct gen_device_info;
struct brw_context;
+/**
+ * Memory zones. When allocating a buffer, you can request that it is
+ * placed into a specific region of the virtual address space (PPGTT).
+ *
+ * Most buffers can go anywhere (BRW_MEMZONE_OTHER). Some buffers are
+ * accessed via an offset from a base address. STATE_BASE_ADDRESS has
+ * a maximum 4GB size for each region, so we need to restrict those
+ * buffers to be within 4GB of the base. Each memory zone corresponds
+ * to a particular base address.
+ *
+ * Currently, i965 partitions the address space into two regions:
+ *
+ * - Low 4GB
+ * - Full 48-bit address space
+ *
+ * Eventually, we hope to carve out 4GB of VMA for each base address.
+ */
+enum brw_memory_zone {
+ BRW_MEMZONE_LOW_4G,
+ BRW_MEMZONE_OTHER,
+
+ /* Shaders - Instruction State Base Address */
+ BRW_MEMZONE_SHADER = BRW_MEMZONE_LOW_4G,
+
+ /* Scratch - General State Base Address */
+ BRW_MEMZONE_SCRATCH = BRW_MEMZONE_LOW_4G,
+
+ /* Surface State Base Address */
+ BRW_MEMZONE_SURFACE = BRW_MEMZONE_LOW_4G,
+
+ /* Dynamic State Base Address */
+ BRW_MEMZONE_DYNAMIC = BRW_MEMZONE_LOW_4G,
+};
+
+#define BRW_MEMZONE_COUNT (BRW_MEMZONE_OTHER + 1)
+
struct brw_bo {
/**
* Size in bytes of the buffer object.
*/
uint64_t size;
- /**
- * Alignment requirement for object
- *
- * Used for GTT mapping & pinning the object.
- */
- uint64_t align;
-
/** Buffer manager context associated with this buffer object */
struct brw_bufmgr *bufmgr;
uint32_t gem_handle;
/**
- * Last seen card virtual address (offset from the beginning of the
- * aperture) for the object. This should be used to fill relocation
- * entries when calling brw_bo_emit_reloc()
+ * Offset of the buffer inside the Graphics Translation Table.
+ *
+ * This is effectively our GPU address for the buffer and we use it
+ * as our base for all state pointers into the buffer. However, since the
+ * kernel may be forced to move it around during the course of the
+ * buffer's lifetime, we can only know where the buffer was on the last
+ * execbuf. We presume, and are usually right, that the buffer will not
+ * move and so we use that last offset for the next batch and by doing
+ * so we can avoid having the kernel perform a relocation fixup pass as
+ * our pointers inside the batch will be using the correct base offset.
+ *
+ * Since we do use it as a base address for the next batch of pointers,
+ * the kernel treats our offset as a request, and if possible will
+ * arrange the buffer to placed at that address (trying to balance
+ * the cost of buffer migration versus the cost of performing
+ * relocations). Furthermore, we can force the kernel to place the buffer,
+ * or report a failure if we specified a conflicting offset, at our chosen
+ * offset by specifying EXEC_OBJECT_PINNED.
+ *
+ * Note the GTT may be either per context, or shared globally across the
+ * system. On a shared system, our buffers have to contend for address
+ * space with both aperture mappings and framebuffers and so are more
+ * likely to be moved. On a full ppGTT system, each batch exists in its
+ * own GTT, and so each buffer may have their own offset within each
+ * context.
*/
- uint64_t offset64;
+ uint64_t gtt_offset;
/**
* The validation list index for this buffer, or -1 when not in a batch.
int refcount;
const char *name;
-#ifndef EXEC_OBJECT_CAPTURE
-#define EXEC_OBJECT_CAPTURE (1<<7)
-#endif
uint64_t kflags;
/**
* using brw_bo_map() to be used by the CPU.
*/
struct brw_bo *brw_bo_alloc(struct brw_bufmgr *bufmgr, const char *name,
- uint64_t size, uint64_t alignment);
+ uint64_t size, enum brw_memory_zone memzone);
/**
* Allocate a tiled buffer object.
struct brw_bo *brw_bo_alloc_tiled(struct brw_bufmgr *bufmgr,
const char *name,
uint64_t size,
+ enum brw_memory_zone memzone,
uint32_t tiling_mode,
uint32_t pitch,
unsigned flags);
struct brw_bo *brw_bo_alloc_tiled_2d(struct brw_bufmgr *bufmgr,
const char *name,
int x, int y, int cpp,
+ enum brw_memory_zone memzone,
uint32_t tiling_mode,
uint32_t *pitch,
unsigned flags);
* Reduces the refcount on the userspace mapping of the buffer
* object.
*/
-static inline int brw_bo_unmap(struct brw_bo *bo) { return 0; }
+static inline int brw_bo_unmap(UNUSED struct brw_bo *bo) { return 0; }
/** Write data into an object. */
int brw_bo_subdata(struct brw_bo *bo, uint64_t offset,
int brw_bo_madvise(struct brw_bo *bo, int madv);
/* drm_bacon_bufmgr_gem.c */
-struct brw_bufmgr *brw_bufmgr_init(struct gen_device_info *devinfo,
- int fd, int batch_size);
+struct brw_bufmgr *brw_bufmgr_init(struct gen_device_info *devinfo, int fd);
struct brw_bo *brw_bo_gem_create_from_name(struct brw_bufmgr *bufmgr,
const char *name,
unsigned int handle);
int brw_bo_wait(struct brw_bo *bo, int64_t timeout_ns);
uint32_t brw_create_hw_context(struct brw_bufmgr *bufmgr);
+
+int brw_hw_context_set_priority(struct brw_bufmgr *bufmgr,
+ uint32_t ctx_id,
+ int priority);
+
void brw_destroy_hw_context(struct brw_bufmgr *bufmgr, uint32_t ctx_id);
int brw_bo_gem_export_to_prime(struct brw_bo *bo, int *prime_fd);
struct brw_bo *brw_bo_gem_create_from_prime(struct brw_bufmgr *bufmgr,
int prime_fd);
+struct brw_bo *brw_bo_gem_create_from_prime_tiled(struct brw_bufmgr *bufmgr,
+ int prime_fd,
+ uint32_t tiling_mode,
+ uint32_t stride);
+
+uint32_t brw_bo_export_gem_handle(struct brw_bo *bo);
int brw_reg_read(struct brw_bufmgr *bufmgr, uint32_t offset,
uint64_t *result);
+bool brw_using_softpin(struct brw_bufmgr *bufmgr);
+
/** @{ */
#if defined(__cplusplus)
projects / mesa.git / blobdiff