src/gallium/drivers/panfrost/pan_context.h

   1 /*
   2  * © Copyright 2018 Alyssa Rosenzweig
   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, sublicense,
   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 next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * 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 NONINFRINGEMENT.  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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef __BUILDER_H__
  26 #define __BUILDER_H__
  27
  28 #define _LARGEFILE64_SOURCE 1
  29 #define CACHE_LINE_SIZE 1024 /* TODO */
  30 #include <sys/mman.h>
  31 #include <assert.h>
  32 #include "pan_resource.h"
  33 #include "pan_job.h"
  34 #include "pan_blend.h"
  35 #include "pan_encoder.h"
  36 #include "pan_texture.h"
  37
  38 #include "pipe/p_compiler.h"
  39 #include "pipe/p_config.h"
  40 #include "pipe/p_context.h"
  41 #include "pipe/p_defines.h"
  42 #include "pipe/p_format.h"
  43 #include "pipe/p_screen.h"
  44 #include "pipe/p_state.h"
  45 #include "util/u_blitter.h"
  46 #include "util/hash_table.h"
  47
  48 #include "midgard/midgard_compile.h"
  49 #include "compiler/shader_enums.h"
  50
  51 /* Forward declare to avoid extra header dep */
  52 struct prim_convert_context;
  53
  54 #define MAX_VARYINGS   4096
  55
  56 #define SET_BIT(lval, bit, cond) \
  57         if (cond) \
  58                 lval |= (bit); \
  59         else \
  60                 lval &= ~(bit);
  61
  62 struct panfrost_constant_buffer {
  63         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  64         uint32_t enabled_mask;
  65         uint32_t dirty_mask;
  66 };
  67
  68 struct panfrost_query {
  69         /* Passthrough from Gallium */
  70         unsigned type;
  71         unsigned index;
  72
  73         /* For computed queries. 64-bit to prevent overflow */
  74         struct {
  75                 uint64_t start;
  76                 uint64_t end;
  77         };
  78
  79         /* Memory for the GPU to writeback the value of the query */
  80         struct panfrost_bo *bo;
  81 };
  82
  83 struct panfrost_fence {
  84         struct pipe_reference reference;
  85         struct util_dynarray syncfds;
  86 };
  87
  88 struct panfrost_streamout {
  89         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
  90         uint32_t offsets[PIPE_MAX_SO_BUFFERS];
  91         unsigned num_targets;
  92 };
  93
  94 struct panfrost_context {
  95         /* Gallium context */
  96         struct pipe_context base;
  97
  98         /* Bound job batch and map of panfrost_batch_key to job batches */
  99         struct panfrost_batch *batch;
 100         struct hash_table *batches;
 101
 102         /* panfrost_bo -> panfrost_bo_access */
 103         struct hash_table *accessed_bos;
 104
 105         /* Within a launch_grid call.. */
 106         const struct pipe_grid_info *compute_grid;
 107
 108         /* Bit mask for supported PIPE_DRAW for this hardware */
 109         unsigned draw_modes;
 110
 111         struct pipe_framebuffer_state pipe_framebuffer;
 112         struct panfrost_streamout streamout;
 113
 114         bool active_queries;
 115         uint64_t prims_generated;
 116         uint64_t tf_prims_generated;
 117         struct panfrost_query *occlusion_query;
 118
 119         unsigned vertex_count;
 120         unsigned instance_count;
 121         enum pipe_prim_type active_prim;
 122
 123         /* If instancing is enabled, vertex count padded for instance; if
 124          * it is disabled, just equal to plain vertex count */
 125         unsigned padded_count;
 126
 127         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 128
 129         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 130
 131         struct panfrost_rasterizer *rasterizer;
 132         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 133         struct panfrost_vertex_state *vertex;
 134
 135         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 136         uint32_t vb_mask;
 137
 138         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 139         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 140
 141         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 142         unsigned sampler_count[PIPE_SHADER_TYPES];
 143
 144         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 145         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 146
 147         struct primconvert_context *primconvert;
 148         struct blitter_context *blitter;
 149
 150         /* Blitting the wallpaper (the old contents of the framebuffer back to
 151          * itself) uses a dedicated u_blitter instance versus general blit()
 152          * callbacks from Gallium, as the blit() callback can trigger
 153          * wallpapering without Gallium realising, which in turns u_blitter
 154          * errors due to unsupported reucrsion */
 155
 156         struct blitter_context *blitter_wallpaper;
 157         struct panfrost_batch *wallpaper_batch;
 158
 159         struct panfrost_blend_state *blend;
 160
 161         struct pipe_viewport_state pipe_viewport;
 162         struct pipe_scissor_state scissor;
 163         struct pipe_blend_color blend_color;
 164         struct pipe_depth_stencil_alpha_state *depth_stencil;
 165         struct pipe_stencil_ref stencil_ref;
 166         unsigned sample_mask;
 167         unsigned min_samples;
 168 };
 169
 170 /* Corresponds to the CSO */
 171
 172 struct panfrost_rasterizer {
 173         struct pipe_rasterizer_state base;
 174 };
 175
 176 /* Variants bundle together to form the backing CSO, bundling multiple
 177  * shaders with varying emulated features baked in (alpha test
 178  * parameters, etc) */
 179
 180 /* A shader state corresponds to the actual, current variant of the shader */
 181 struct panfrost_shader_state {
 182         /* Compiled, mapped descriptor, ready for the hardware */
 183         bool compiled;
 184
 185         /* Non-descript information */
 186         int uniform_count;
 187         unsigned uniform_cutoff;
 188         unsigned work_reg_count;
 189         unsigned attribute_count;
 190         bool can_discard;
 191         bool writes_point_size;
 192         bool writes_depth;
 193         bool writes_stencil;
 194         bool reads_point_coord;
 195         bool reads_face;
 196         bool reads_frag_coord;
 197         bool writes_global;
 198         unsigned stack_size;
 199         unsigned shared_size;
 200
 201         /* Does the fragment shader have side effects? In particular, if output
 202          * is masked out, is it legal to skip shader execution? */
 203         bool fs_sidefx;
 204
 205         /* For Bifrost - output type for each RT */
 206         enum bifrost_shader_type blend_types[BIFROST_MAX_RENDER_TARGET_COUNT];
 207
 208         unsigned int varying_count;
 209         enum mali_format varyings[PIPE_MAX_ATTRIBS];
 210         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 211         struct pipe_stream_output_info stream_output;
 212         uint64_t so_mask;
 213
 214         unsigned sysval_count;
 215         unsigned sysval[MAX_SYSVAL_COUNT];
 216
 217         /* Information on this particular shader variant */
 218         struct pipe_alpha_state alpha_state;
 219
 220         uint16_t point_sprite_mask;
 221         unsigned point_sprite_upper_left : 1;
 222
 223         /* Should we enable helper invocations */
 224         bool helper_invocations;
 225
 226         unsigned first_tag;
 227         struct panfrost_bo *bo;
 228
 229         BITSET_WORD outputs_read;
 230         enum pipe_format rt_formats[8];
 231 };
 232
 233 /* A collection of varyings (the CSO) */
 234 struct panfrost_shader_variants {
 235         /* A panfrost_shader_variants can represent a shader for
 236          * either graphics or compute */
 237
 238         bool is_compute;
 239
 240         union {
 241                 struct pipe_shader_state base;
 242                 struct pipe_compute_state cbase;
 243         };
 244
 245         struct panfrost_shader_state *variants;
 246         unsigned variant_space;
 247
 248         unsigned variant_count;
 249
 250         /* The current active variant */
 251         unsigned active_variant;
 252 };
 253
 254 struct panfrost_vertex_state {
 255         unsigned num_elements;
 256
 257         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 258         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 259 };
 260
 261 struct panfrost_sampler_state {
 262         struct pipe_sampler_state base;
 263         struct mali_sampler_descriptor midgard_hw;
 264         struct bifrost_sampler_descriptor bifrost_hw;
 265 };
 266
 267 /* Misnomer: Sampler view corresponds to textures, not samplers */
 268
 269 struct panfrost_sampler_view {
 270         struct pipe_sampler_view base;
 271         struct panfrost_bo *bo;
 272         struct bifrost_texture_descriptor *bifrost_descriptor;
 273         mali_ptr texture_bo;
 274         enum mali_texture_layout layout;
 275 };
 276
 277 static inline struct panfrost_context *
 278 pan_context(struct pipe_context *pcontext)
 279 {
 280         return (struct panfrost_context *) pcontext;
 281 }
 282
 283 static inline struct panfrost_shader_state *
 284 panfrost_get_shader_state(struct panfrost_context *ctx,
 285                           enum pipe_shader_type st)
 286 {
 287         struct panfrost_shader_variants *all = ctx->shader[st];
 288
 289         if (!all)
 290                 return NULL;
 291
 292         return &all->variants[all->active_variant];
 293 }
 294
 295 struct pipe_context *
 296 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 297
 298 void
 299 panfrost_invalidate_frame(struct panfrost_context *ctx);
 300
 301 bool
 302 panfrost_writes_point_size(struct panfrost_context *ctx);
 303
 304 void
 305 panfrost_vertex_state_upd_attr_offs(struct panfrost_context *ctx,
 306                                     struct mali_vertex_tiler_postfix *vertex_postfix);
 307
 308 struct panfrost_transfer
 309 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 310
 311 void
 312 panfrost_flush(
 313         struct pipe_context *pipe,
 314         struct pipe_fence_handle **fence,
 315         unsigned flags);
 316
 317 mali_ptr panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 318 mali_ptr panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 319
 320 void
 321 panfrost_attach_mfbd(struct panfrost_batch *batch, unsigned vertex_count);
 322
 323 void
 324 panfrost_attach_sfbd(struct panfrost_batch *batch, unsigned vertex_count);
 325
 326 struct midgard_tiler_descriptor
 327 panfrost_emit_midg_tiler(struct panfrost_batch *batch, unsigned vertex_count);
 328
 329 mali_ptr
 330 panfrost_fragment_job(struct panfrost_batch *batch, bool has_draws);
 331
 332 void
 333 panfrost_shader_compile(struct panfrost_context *ctx,
 334                         enum pipe_shader_ir ir_type,
 335                         const void *ir,
 336                         gl_shader_stage stage,
 337                         struct panfrost_shader_state *state,
 338                         uint64_t *outputs_written);
 339
 340 unsigned
 341 panfrost_ubo_count(struct panfrost_context *ctx, enum pipe_shader_type stage);
 342
 343 void
 344 panfrost_create_sampler_view_bo(struct panfrost_sampler_view *so,
 345                                 struct pipe_context *pctx,
 346                                 struct pipe_resource *texture);
 347
 348 /* Instancing */
 349
 350 mali_ptr
 351 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 352
 353 /* Compute */
 354
 355 void
 356 panfrost_compute_context_init(struct pipe_context *pctx);
 357
 358
 359 #endif