src/gallium/winsys/amdgpu/drm/amdgpu_cs.h

   1 /*
   2  * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
   3  * Copyright © 2015 Advanced Micro Devices, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  16  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  18  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * The above copyright notice and this permission notice (including the
  24  * next paragraph) shall be included in all copies or substantial portions
  25  * of the Software.
  26  */
  27 /*
  28  * Authors:
  29  *      Marek Olšák <maraeo@gmail.com>
  30  */
  31
  32 #ifndef AMDGPU_CS_H
  33 #define AMDGPU_CS_H
  34
  35 #include "amdgpu_bo.h"
  36 #include "util/u_memory.h"
  37 #include <amdgpu_drm.h>
  38
  39 struct amdgpu_ctx {
  40    struct amdgpu_winsys *ws;
  41    amdgpu_context_handle ctx;
  42    amdgpu_bo_handle user_fence_bo;
  43    uint64_t *user_fence_cpu_address_base;
  44    int refcount;
  45    unsigned initial_num_total_rejected_cs;
  46    unsigned num_rejected_cs;
  47 };
  48
  49 struct amdgpu_cs_buffer {
  50    struct amdgpu_winsys_bo *bo;
  51    union {
  52       struct {
  53          uint64_t priority_usage;
  54       } real;
  55       struct {
  56          uint32_t real_idx; /* index of underlying real BO */
  57       } slab;
  58    } u;
  59    enum radeon_bo_usage usage;
  60 };
  61
  62 enum ib_type {
  63    IB_MAIN,
  64    IB_NUM,
  65 };
  66
  67 struct amdgpu_ib {
  68    struct radeon_winsys_cs base;
  69
  70    /* A buffer out of which new IBs are allocated. */
  71    struct pb_buffer        *big_ib_buffer;
  72    uint8_t                 *ib_mapped;
  73    unsigned                used_ib_space;
  74    unsigned                max_ib_size;
  75    uint32_t                *ptr_ib_size;
  76    enum ib_type            ib_type;
  77 };
  78
  79 struct amdgpu_cs_context {
  80    struct drm_amdgpu_cs_chunk_ib ib[IB_NUM];
  81
  82    /* Buffers. */
  83    unsigned                    max_real_buffers;
  84    unsigned                    num_real_buffers;
  85    struct amdgpu_cs_buffer     *real_buffers;
  86
  87    unsigned                    max_real_submit;
  88    amdgpu_bo_handle            *handles;
  89    uint8_t                     *flags;
  90
  91    unsigned                    num_slab_buffers;
  92    unsigned                    max_slab_buffers;
  93    struct amdgpu_cs_buffer     *slab_buffers;
  94
  95    unsigned                    num_sparse_buffers;
  96    unsigned                    max_sparse_buffers;
  97    struct amdgpu_cs_buffer     *sparse_buffers;
  98
  99    int                         buffer_indices_hashlist[4096];
 100
 101    struct amdgpu_winsys_bo     *last_added_bo;
 102    unsigned                    last_added_bo_index;
 103    unsigned                    last_added_bo_usage;
 104    uint64_t                    last_added_bo_priority_usage;
 105
 106    struct pipe_fence_handle    **fence_dependencies;
 107    unsigned                    num_fence_dependencies;
 108    unsigned                    max_fence_dependencies;
 109
 110    struct pipe_fence_handle    *fence;
 111
 112    /* the error returned from cs_flush for non-async submissions */
 113    int                         error_code;
 114 };
 115
 116 struct amdgpu_cs {
 117    struct amdgpu_ib main; /* must be first because this is inherited */
 118    struct amdgpu_ctx *ctx;
 119    enum ring_type ring_type;
 120    struct drm_amdgpu_cs_chunk_fence fence_chunk;
 121
 122    /* We flip between these two CS. While one is being consumed
 123     * by the kernel in another thread, the other one is being filled
 124     * by the pipe driver. */
 125    struct amdgpu_cs_context csc1;
 126    struct amdgpu_cs_context csc2;
 127    /* The currently-used CS. */
 128    struct amdgpu_cs_context *csc;
 129    /* The CS being currently-owned by the other thread. */
 130    struct amdgpu_cs_context *cst;
 131
 132    /* Flush CS. */
 133    void (*flush_cs)(void *ctx, unsigned flags, struct pipe_fence_handle **fence);
 134    void *flush_data;
 135
 136    struct util_queue_fence flush_completed;
 137    struct pipe_fence_handle *next_fence;
 138 };
 139
 140 struct amdgpu_fence {
 141    struct pipe_reference reference;
 142    /* If ctx == NULL, this fence is syncobj-based. */
 143    uint32_t syncobj;
 144
 145    struct amdgpu_winsys *ws;
 146    struct amdgpu_ctx *ctx;  /* submission context */
 147    struct amdgpu_cs_fence fence;
 148    uint64_t *user_fence_cpu_address;
 149
 150    /* If the fence is unknown due to an IB still being submitted
 151     * in the other thread. */
 152    volatile int submission_in_progress; /* bool (int for atomicity) */
 153    volatile int signalled;              /* bool (int for atomicity) */
 154 };
 155
 156 static inline bool amdgpu_fence_is_syncobj(struct amdgpu_fence *fence)
 157 {
 158    return fence->ctx == NULL;
 159 }
 160
 161 static inline void amdgpu_ctx_unref(struct amdgpu_ctx *ctx)
 162 {
 163    if (p_atomic_dec_zero(&ctx->refcount)) {
 164       amdgpu_cs_ctx_free(ctx->ctx);
 165       amdgpu_bo_free(ctx->user_fence_bo);
 166       FREE(ctx);
 167    }
 168 }
 169
 170 static inline void amdgpu_fence_reference(struct pipe_fence_handle **dst,
 171                                           struct pipe_fence_handle *src)
 172 {
 173    struct amdgpu_fence **rdst = (struct amdgpu_fence **)dst;
 174    struct amdgpu_fence *rsrc = (struct amdgpu_fence *)src;
 175
 176    if (pipe_reference(&(*rdst)->reference, &rsrc->reference)) {
 177       struct amdgpu_fence *fence = *rdst;
 178
 179       if (amdgpu_fence_is_syncobj(fence))
 180          amdgpu_cs_destroy_syncobj(fence->ws->dev, fence->syncobj);
 181       else
 182          amdgpu_ctx_unref(fence->ctx);
 183
 184       FREE(fence);
 185    }
 186    *rdst = rsrc;
 187 }
 188
 189 int amdgpu_lookup_buffer(struct amdgpu_cs_context *cs, struct amdgpu_winsys_bo *bo);
 190
 191 static inline struct amdgpu_ib *
 192 amdgpu_ib(struct radeon_winsys_cs *base)
 193 {
 194    return (struct amdgpu_ib *)base;
 195 }
 196
 197 static inline struct amdgpu_cs *
 198 amdgpu_cs(struct radeon_winsys_cs *base)
 199 {
 200    assert(amdgpu_ib(base)->ib_type == IB_MAIN);
 201    return (struct amdgpu_cs*)base;
 202 }
 203
 204 #define get_container(member_ptr, container_type, container_member) \
 205    (container_type *)((char *)(member_ptr) - offsetof(container_type, container_member))
 206
 207 static inline struct amdgpu_cs *
 208 amdgpu_cs_from_ib(struct amdgpu_ib *ib)
 209 {
 210    switch (ib->ib_type) {
 211    case IB_MAIN:
 212       return get_container(ib, struct amdgpu_cs, main);
 213    default:
 214       unreachable("bad ib_type");
 215    }
 216 }
 217
 218 static inline bool
 219 amdgpu_bo_is_referenced_by_cs(struct amdgpu_cs *cs,
 220                               struct amdgpu_winsys_bo *bo)
 221 {
 222    int num_refs = bo->num_cs_references;
 223    return num_refs == bo->ws->num_cs ||
 224          (num_refs && amdgpu_lookup_buffer(cs->csc, bo) != -1);
 225 }
 226
 227 static inline bool
 228 amdgpu_bo_is_referenced_by_cs_with_usage(struct amdgpu_cs *cs,
 229                                          struct amdgpu_winsys_bo *bo,
 230                                          enum radeon_bo_usage usage)
 231 {
 232    int index;
 233    struct amdgpu_cs_buffer *buffer;
 234
 235    if (!bo->num_cs_references)
 236       return false;
 237
 238    index = amdgpu_lookup_buffer(cs->csc, bo);
 239    if (index == -1)
 240       return false;
 241
 242    buffer = bo->bo ? &cs->csc->real_buffers[index] :
 243             bo->sparse ? &cs->csc->sparse_buffers[index] :
 244             &cs->csc->slab_buffers[index];
 245
 246    return (buffer->usage & usage) != 0;
 247 }
 248
 249 static inline bool
 250 amdgpu_bo_is_referenced_by_any_cs(struct amdgpu_winsys_bo *bo)
 251 {
 252    return bo->num_cs_references != 0;
 253 }
 254
 255 bool amdgpu_fence_wait(struct pipe_fence_handle *fence, uint64_t timeout,
 256                        bool absolute);
 257 void amdgpu_add_fences(struct amdgpu_winsys_bo *bo,
 258                        unsigned num_fences,
 259                        struct pipe_fence_handle **fences);
 260 void amdgpu_cs_sync_flush(struct radeon_winsys_cs *rcs);
 261 void amdgpu_cs_init_functions(struct amdgpu_winsys *ws);
 262 void amdgpu_cs_submit_ib(void *job, int thread_index);
 263
 264 #endif