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      1 /*
      2  * Copyright (c) 2012-2015 Etnaviv Project
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the
     12  * next paragraph) shall be included in all copies or substantial portions
     13  * of the Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     21  * DEALINGS IN THE SOFTWARE.
     22  *
     23  * Authors:
     24  *    Wladimir J. van der Laan <laanwj (at) gmail.com>
     25  */
     26 
     27 #ifndef H_ETNAVIV_RESOURCE
     28 #define H_ETNAVIV_RESOURCE
     29 
     30 #include "etnaviv_internal.h"
     31 #include "etnaviv_tiling.h"
     32 #include "pipe/p_state.h"
     33 #include "util/list.h"
     34 
     35 struct pipe_screen;
     36 
     37 struct etna_resource_level {
     38    unsigned width, padded_width; /* in pixels */
     39    unsigned height, padded_height; /* in samples */
     40    unsigned offset; /* offset into memory area */
     41    uint32_t stride; /* row stride */
     42    uint32_t layer_stride; /* layer stride */
     43    unsigned size; /* total size of memory area */
     44 
     45    uint32_t ts_offset;
     46    uint32_t ts_layer_stride;
     47    uint32_t ts_size;
     48    uint32_t clear_value; /* clear value of resource level (mainly for TS) */
     49 };
     50 
     51 /* status of queued up but not flushed reads and write operations.
     52  * In _transfer_map() we need to know if queued up rendering needs
     53  * to be flushed to preserve the order of cpu and gpu access. */
     54 enum etna_resource_status {
     55    ETNA_PENDING_WRITE = 0x01,
     56    ETNA_PENDING_READ = 0x02,
     57 };
     58 
     59 struct etna_resource {
     60    struct pipe_resource base;
     61    struct renderonly_scanout *scanout;
     62    uint32_t seqno;
     63 
     64    /* only lod 0 used for non-texture buffers */
     65    /* Layout for surface (tiled, multitiled, split tiled, ...) */
     66    enum etna_surface_layout layout;
     67    /* Horizontal alignment for texture unit (TEXTURE_HALIGN_*) */
     68    unsigned halign;
     69    struct etna_bo *bo; /* Surface video memory */
     70    struct etna_bo *ts_bo; /* Tile status video memory */
     71 
     72    struct etna_resource_level levels[ETNA_NUM_LOD];
     73 
     74    /* When we are rendering to a texture, we need a differently tiled resource */
     75    struct pipe_resource *texture;
     76 
     77    enum etna_resource_status status;
     78 
     79    /* resources accessed by queued but not flushed draws are tracked
     80     * in the used_resources list. */
     81    struct list_head list;
     82    struct etna_context *pending_ctx;
     83 };
     84 
     85 /* returns TRUE if a is newer than b */
     86 static inline bool
     87 etna_resource_newer(struct etna_resource *a, struct etna_resource *b)
     88 {
     89    return (int)(a->seqno - b->seqno) > 0;
     90 }
     91 
     92 /* returns TRUE if a is older than b */
     93 static inline bool
     94 etna_resource_older(struct etna_resource *a, struct etna_resource *b)
     95 {
     96    return (int)(a->seqno - b->seqno) < 0;
     97 }
     98 
     99 /* is the resource only used on the sampler? */
    100 static inline bool
    101 etna_resource_sampler_only(const struct pipe_resource *pres)
    102 {
    103    return (pres->bind & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET |
    104                          PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_BLENDABLE)) ==
    105           PIPE_BIND_SAMPLER_VIEW;
    106 }
    107 
    108 static inline struct etna_resource *
    109 etna_resource(struct pipe_resource *p)
    110 {
    111    return (struct etna_resource *)p;
    112 }
    113 
    114 void
    115 etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
    116                    enum etna_resource_status status);
    117 
    118 void
    119 etna_resource_wait(struct pipe_context *ctx, struct etna_resource *rsc);
    120 
    121 static inline void
    122 resource_read(struct etna_context *ctx, struct pipe_resource *prsc)
    123 {
    124    etna_resource_used(ctx, prsc, ETNA_PENDING_READ);
    125 }
    126 
    127 static inline void
    128 resource_written(struct etna_context *ctx, struct pipe_resource *prsc)
    129 {
    130    etna_resource_used(ctx, prsc, ETNA_PENDING_WRITE);
    131 }
    132 
    133 /* Allocate Tile Status for an etna resource.
    134  * Tile status is a cache of the clear status per tile. This means a smaller
    135  * surface has to be cleared which is faster.
    136  * This is also called "fast clear". */
    137 bool
    138 etna_screen_resource_alloc_ts(struct pipe_screen *pscreen,
    139                               struct etna_resource *prsc);
    140 
    141 struct pipe_resource *
    142 etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
    143                     const struct pipe_resource *templat);
    144 
    145 void
    146 etna_resource_screen_init(struct pipe_screen *pscreen);
    147 
    148 #endif
    149