/************************************************************************** * * Copyright 2018-2019 Alyssa Rosenzweig * Copyright 2018-2019 Collabora, Ltd. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ #ifndef PAN_SCREEN_H #define PAN_SCREEN_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 #include "pan_allocate.h" struct panfrost_context; struct panfrost_resource; struct panfrost_screen; /* Driver limits */ #define PAN_MAX_CONST_BUFFERS 16 /* Flags for allocated memory */ /* 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; unsigned gpu_id; struct renderonly *ro; /* 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); /* 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]; /* 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; }; static inline struct panfrost_screen * pan_screen(struct pipe_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_allocate_slab(struct panfrost_screen *screen, struct panfrost_memory *mem, size_t pages, bool same_va, int extra_flags, int commit_count, int extent); void panfrost_drm_free_slab(struct panfrost_screen *screen, struct panfrost_memory *mem); struct panfrost_bo * 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, const struct panfrost_bo *bo); int panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws, bool is_scanout); void panfrost_drm_force_flush_fragment(struct panfrost_context *ctx, struct pipe_fence_handle **fence); unsigned panfrost_drm_query_gpu_version(struct panfrost_screen *screen); int panfrost_drm_init_context(struct panfrost_context *ctx); void panfrost_drm_fence_reference(struct pipe_screen *screen, struct pipe_fence_handle **ptr, struct pipe_fence_handle *fence); boolean panfrost_drm_fence_finish(struct pipe_screen *pscreen, 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 */