#ifndef PAN_SCREEN_H
#define PAN_SCREEN_H
+#include <xf86drm.h>
#include "pipe/p_screen.h"
#include "pipe/p_defines.h"
#include "renderonly/renderonly.h"
+#include "util/u_dynarray.h"
+#include "util/bitset.h"
#include <panfrost-misc.h>
#include "pan_allocate.h"
struct panfrost_resource;
struct panfrost_screen;
+/* Driver limits */
+#define PAN_MAX_CONST_BUFFERS 16
+
/* Flags for allocated memory */
-#define PAN_ALLOCATE_EXECUTE (1 << 0)
-#define PAN_ALLOCATE_GROWABLE (1 << 1)
-#define PAN_ALLOCATE_INVISIBLE (1 << 2)
-#define PAN_ALLOCATE_COHERENT_LOCAL (1 << 3)
+
+/* This memory region is executable */
+#define PAN_ALLOCATE_EXECUTE (1 << 0)
+
+/* This memory region should be lazily allocated and grow-on-page-fault. Must
+ * be used in conjunction with INVISIBLE */
+#define PAN_ALLOCATE_GROWABLE (1 << 1)
+
+/* This memory region should not be mapped to the CPU */
+#define PAN_ALLOCATE_INVISIBLE (1 << 2)
+
+/* This memory region will be used for varyings and needs to have the cache
+ * bits twiddled accordingly */
+#define PAN_ALLOCATE_COHERENT_LOCAL (1 << 3)
+
+/* This region may not be used immediately and will not mmap on allocate
+ * (semantically distinct from INVISIBLE, which cannot never be mmaped) */
+#define PAN_ALLOCATE_DELAY_MMAP (1 << 4)
+
+/* Transient slab size. This is a balance between fragmentation against cache
+ * locality and ease of bookkeeping */
+
+#define TRANSIENT_SLAB_PAGES (32) /* 128kb */
+#define TRANSIENT_SLAB_SIZE (4096 * TRANSIENT_SLAB_PAGES)
+
+/* Maximum number of transient slabs so we don't need dynamic arrays. Most
+ * interesting Mali boards are 4GB RAM max, so if the entire RAM was filled
+ * with transient slabs, you could never exceed (4GB / TRANSIENT_SLAB_SIZE)
+ * allocations anyway. By capping, we can use a fixed-size bitset for tracking
+ * free slabs, eliminating quite a bit of complexity. We can pack the free
+ * state of 8 slabs into a single byte, so for 128kb transient slabs the bitset
+ * occupies a cheap 4kb of memory */
+
+#define MAX_TRANSIENT_SLABS (1024*1024 / TRANSIENT_SLAB_PAGES)
+
+/* How many power-of-two levels in the BO cache do we want? 2^12
+ * minimum chosen as it is the page size that all allocations are
+ * rounded to */
+
+#define MIN_BO_CACHE_BUCKET (12) /* 2^12 = 4KB */
+#define MAX_BO_CACHE_BUCKET (22) /* 2^22 = 4MB */
+
+/* Fencepost problem, hence the off-by-one */
+#define NR_BO_CACHE_BUCKETS (MAX_BO_CACHE_BUCKET - MIN_BO_CACHE_BUCKET + 1)
struct panfrost_screen {
struct pipe_screen base;
int fd;
+ /* Properties of the GPU in use */
+ unsigned gpu_id;
+ bool require_sfbd;
+
+ drmVersionPtr kernel_version;
+
struct renderonly *ro;
- /* Memory management is based on subdividing slabs with AMD's allocator */
- struct pb_slabs slabs;
-
- /* TODO: Where? */
- struct panfrost_resource *display_target;
-
- /* While we're busy building up the job for frame N, the GPU is
- * still busy executing frame N-1. So hold a reference to
- * yesterjob */
- int last_fragment_flushed;
- struct panfrost_job *last_job;
+ pthread_mutex_t transient_lock;
+
+ /* Transient memory management is based on borrowing fixed-size slabs
+ * off the screen (loaning them out to the batch). Dynamic array
+ * container of panfrost_bo */
+
+ struct util_dynarray transient_bo;
+
+ /* Set of free transient BOs */
+ BITSET_DECLARE(free_transient, MAX_TRANSIENT_SLABS);
+
+ pthread_mutex_t bo_cache_lock;
+
+ /* The BO cache is a set of buckets with power-of-two sizes ranging
+ * from 2^12 (4096, the page size) to 2^(12 + MAX_BO_CACHE_BUCKETS).
+ * Each bucket is a linked list of free panfrost_bo objects. */
+
+ struct list_head bo_cache[NR_BO_CACHE_BUCKETS];
};
static inline struct panfrost_screen *
pan_screen(struct pipe_screen *p)
{
- return (struct panfrost_screen *)p;
+ return (struct panfrost_screen *)p;
+}
+
+/* Get a transient BO off the screen given a
+ * particular index */
+
+static inline struct panfrost_bo *
+pan_bo_for_index(struct panfrost_screen *screen, unsigned index)
+{
+ return *(util_dynarray_element(&screen->transient_bo,
+ struct panfrost_bo *, index));
}
void
panfrost_drm_free_slab(struct panfrost_screen *screen,
struct panfrost_memory *mem);
struct panfrost_bo *
-panfrost_drm_import_bo(struct panfrost_screen *screen,
- struct winsys_handle *whandle);
+panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size,
+ uint32_t flags);
+void
+panfrost_drm_mmap_bo(struct panfrost_screen *screen, struct panfrost_bo *bo);
+void
+panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo, bool cacheable);
+struct panfrost_bo *
+panfrost_drm_import_bo(struct panfrost_screen *screen, int fd);
int
-panfrost_drm_export_bo(struct panfrost_screen *screen, int gem_handle,
- unsigned int stride, struct winsys_handle *whandle);
+panfrost_drm_export_bo(struct panfrost_screen *screen, const struct panfrost_bo *bo);
int
-panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws,
- bool is_scanout);
+panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws);
void
panfrost_drm_force_flush_fragment(struct panfrost_context *ctx,
struct pipe_fence_handle **fence);
struct pipe_context *ctx,
struct pipe_fence_handle *fence,
uint64_t timeout);
+struct panfrost_bo *
+panfrost_bo_cache_fetch(
+ struct panfrost_screen *screen,
+ size_t size, uint32_t flags);
+
+bool
+panfrost_bo_cache_put(
+ struct panfrost_screen *screen,
+ struct panfrost_bo *bo);
+
+void
+panfrost_bo_cache_evict_all(
+ struct panfrost_screen *screen);
#endif /* PAN_SCREEN_H */
projects / mesa.git / blobdiff