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      1 /*
      2  * Copyright  2011 Marek Olk <maraeo (at) gmail.com>
      3  * All Rights Reserved.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining
      6  * a copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sub license, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     14  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
     15  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     16  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
     17  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     21  *
     22  * The above copyright notice and this permission notice (including the
     23  * next paragraph) shall be included in all copies or substantial portions
     24  * of the Software.
     25  */
     26 
     27 #ifndef RADEON_DRM_CS_H
     28 #define RADEON_DRM_CS_H
     29 
     30 #include "radeon_drm_bo.h"
     31 
     32 struct radeon_bo_item {
     33     struct radeon_bo    *bo;
     34     union {
     35         struct {
     36             uint64_t    priority_usage;
     37         } real;
     38         struct {
     39             unsigned    real_idx;
     40         } slab;
     41     } u;
     42 };
     43 
     44 struct radeon_cs_context {
     45     uint32_t                    buf[16 * 1024];
     46 
     47     int                         fd;
     48     struct drm_radeon_cs        cs;
     49     struct drm_radeon_cs_chunk  chunks[3];
     50     uint64_t                    chunk_array[3];
     51     uint32_t                    flags[2];
     52 
     53     /* Buffers. */
     54     unsigned                    max_relocs;
     55     unsigned                    num_relocs;
     56     unsigned                    num_validated_relocs;
     57     struct radeon_bo_item       *relocs_bo;
     58     struct drm_radeon_cs_reloc  *relocs;
     59 
     60     unsigned                    num_slab_buffers;
     61     unsigned                    max_slab_buffers;
     62     struct radeon_bo_item       *slab_buffers;
     63 
     64     int                         reloc_indices_hashlist[4096];
     65 };
     66 
     67 struct radeon_drm_cs {
     68     struct radeon_winsys_cs base;
     69     enum ring_type          ring_type;
     70 
     71     /* We flip between these two CS. While one is being consumed
     72      * by the kernel in another thread, the other one is being filled
     73      * by the pipe driver. */
     74     struct radeon_cs_context csc1;
     75     struct radeon_cs_context csc2;
     76     /* The currently-used CS. */
     77     struct radeon_cs_context *csc;
     78     /* The CS being currently-owned by the other thread. */
     79     struct radeon_cs_context *cst;
     80 
     81     /* The winsys. */
     82     struct radeon_drm_winsys *ws;
     83 
     84     /* Flush CS. */
     85     void (*flush_cs)(void *ctx, unsigned flags, struct pipe_fence_handle **fence);
     86     void *flush_data;
     87 
     88     struct util_queue_fence flush_completed;
     89     struct pipe_fence_handle *next_fence;
     90 };
     91 
     92 int radeon_lookup_buffer(struct radeon_cs_context *csc, struct radeon_bo *bo);
     93 
     94 static inline struct radeon_drm_cs *
     95 radeon_drm_cs(struct radeon_winsys_cs *base)
     96 {
     97     return (struct radeon_drm_cs*)base;
     98 }
     99 
    100 static inline bool
    101 radeon_bo_is_referenced_by_cs(struct radeon_drm_cs *cs,
    102                               struct radeon_bo *bo)
    103 {
    104     int num_refs = bo->num_cs_references;
    105     return num_refs == bo->rws->num_cs ||
    106            (num_refs && radeon_lookup_buffer(cs->csc, bo) != -1);
    107 }
    108 
    109 static inline bool
    110 radeon_bo_is_referenced_by_cs_for_write(struct radeon_drm_cs *cs,
    111                                         struct radeon_bo *bo)
    112 {
    113     int index;
    114 
    115     if (!bo->num_cs_references)
    116         return false;
    117 
    118     index = radeon_lookup_buffer(cs->csc, bo);
    119     if (index == -1)
    120         return false;
    121 
    122     if (!bo->handle)
    123         index = cs->csc->slab_buffers[index].u.slab.real_idx;
    124 
    125     return cs->csc->relocs[index].write_domain != 0;
    126 }
    127 
    128 static inline bool
    129 radeon_bo_is_referenced_by_any_cs(struct radeon_bo *bo)
    130 {
    131     return bo->num_cs_references != 0;
    132 }
    133 
    134 void radeon_drm_cs_sync_flush(struct radeon_winsys_cs *rcs);
    135 void radeon_drm_cs_init_functions(struct radeon_drm_winsys *ws);
    136 void radeon_drm_cs_emit_ioctl_oneshot(void *job, int thread_index);
    137 
    138 #endif
    139