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         uint32_t syncobj;
  86         bool signaled;
  87 };
  88
  89 struct panfrost_streamout {
  90         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
  91         uint32_t offsets[PIPE_MAX_SO_BUFFERS];
  92         unsigned num_targets;
  93 };
  94
  95 struct panfrost_context {
  96         /* Gallium context */
  97         struct pipe_context base;
  98
  99         /* Bound job batch and map of panfrost_batch_key to job batches */
 100         struct panfrost_batch *batch;
 101         struct hash_table *batches;
 102
 103         /* panfrost_bo -> panfrost_bo_access */
 104         struct hash_table *accessed_bos;
 105
 106         /* Within a launch_grid call.. */
 107         const struct pipe_grid_info *compute_grid;
 108
 109         /* Bit mask for supported PIPE_DRAW for this hardware */
 110         unsigned draw_modes;
 111
 112         struct pipe_framebuffer_state pipe_framebuffer;
 113         struct panfrost_streamout streamout;
 114
 115         bool active_queries;
 116         uint64_t prims_generated;
 117         uint64_t tf_prims_generated;
 118         struct panfrost_query *occlusion_query;
 119
 120         unsigned vertex_count;
 121         unsigned instance_count;
 122         enum pipe_prim_type active_prim;
 123
 124         /* If instancing is enabled, vertex count padded for instance; if
 125          * it is disabled, just equal to plain vertex count */
 126         unsigned padded_count;
 127
 128         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 129
 130         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 131
 132         struct panfrost_rasterizer *rasterizer;
 133         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 134         struct panfrost_vertex_state *vertex;
 135
 136         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 137         uint32_t vb_mask;
 138
 139         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 140         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 141
 142         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 143         unsigned sampler_count[PIPE_SHADER_TYPES];
 144
 145         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 146         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 147
 148         struct primconvert_context *primconvert;
 149         struct blitter_context *blitter;
 150
 151         /* Blitting the wallpaper (the old contents of the framebuffer back to
 152          * itself) uses a dedicated u_blitter instance versus general blit()
 153          * callbacks from Gallium, as the blit() callback can trigger
 154          * wallpapering without Gallium realising, which in turns u_blitter
 155          * errors due to unsupported reucrsion */
 156
 157         struct blitter_context *blitter_wallpaper;
 158         struct panfrost_batch *wallpaper_batch;
 159
 160         struct panfrost_blend_state *blend;
 161
 162         struct pipe_viewport_state pipe_viewport;
 163         struct pipe_scissor_state scissor;
 164         struct pipe_blend_color blend_color;
 165         struct panfrost_zsa_state *depth_stencil;
 166         struct pipe_stencil_ref stencil_ref;
 167         unsigned sample_mask;
 168         unsigned min_samples;
 169
 170         struct panfrost_blend_state blit_blend;
 171 };
 172
 173 /* Corresponds to the CSO */
 174
 175 struct panfrost_rasterizer {
 176         struct pipe_rasterizer_state base;
 177 };
 178
 179 /* Variants bundle together to form the backing CSO, bundling multiple
 180  * shaders with varying emulated features baked in */
 181
 182 /* A shader state corresponds to the actual, current variant of the shader */
 183 struct panfrost_shader_state {
 184         /* Compiled, mapped descriptor, ready for the hardware */
 185         bool compiled;
 186         struct mali_shader_packed shader;
 187
 188         /* Non-descript information */
 189         unsigned uniform_count;
 190         unsigned work_reg_count;
 191         bool can_discard;
 192         bool writes_point_size;
 193         bool writes_depth;
 194         bool writes_stencil;
 195         bool reads_point_coord;
 196         bool reads_face;
 197         bool reads_frag_coord;
 198         bool writes_global;
 199         unsigned stack_size;
 200         unsigned shared_size;
 201
 202         /* Does the fragment shader have side effects? In particular, if output
 203          * is masked out, is it legal to skip shader execution? */
 204         bool fs_sidefx;
 205
 206         /* For Bifrost - output type for each RT */
 207         enum bifrost_shader_type blend_types[BIFROST_MAX_RENDER_TARGET_COUNT];
 208
 209         unsigned attribute_count, varying_count;
 210         enum mali_format varyings[PIPE_MAX_ATTRIBS];
 211         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 212         struct pipe_stream_output_info stream_output;
 213         uint64_t so_mask;
 214
 215         unsigned sysval_count;
 216         unsigned sysval[MAX_SYSVAL_COUNT];
 217
 218         uint16_t point_sprite_mask;
 219         unsigned point_sprite_upper_left : 1;
 220
 221         /* Should we enable helper invocations */
 222         bool helper_invocations;
 223
 224         /* GPU-executable memory */
 225         struct panfrost_bo *bo;
 226
 227         BITSET_WORD outputs_read;
 228         enum pipe_format rt_formats[8];
 229 };
 230
 231 /* A collection of varyings (the CSO) */
 232 struct panfrost_shader_variants {
 233         /* A panfrost_shader_variants can represent a shader for
 234          * either graphics or compute */
 235
 236         bool is_compute;
 237
 238         union {
 239                 struct pipe_shader_state base;
 240                 struct pipe_compute_state cbase;
 241         };
 242
 243         struct panfrost_shader_state *variants;
 244         unsigned variant_space;
 245
 246         unsigned variant_count;
 247
 248         /* The current active variant */
 249         unsigned active_variant;
 250 };
 251
 252 struct panfrost_vertex_state {
 253         unsigned num_elements;
 254
 255         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 256         unsigned formats[PIPE_MAX_ATTRIBS];
 257 };
 258
 259 struct panfrost_zsa_state {
 260         struct pipe_depth_stencil_alpha_state base;
 261
 262         /* Precomputed stencil state */
 263         struct mali_stencil_packed stencil_front;
 264         struct mali_stencil_packed stencil_back;
 265         u8 stencil_mask_front;
 266         u8 stencil_mask_back;
 267 };
 268
 269 struct panfrost_sampler_state {
 270         struct pipe_sampler_state base;
 271         struct mali_midgard_sampler_packed hw;
 272 };
 273
 274 /* Misnomer: Sampler view corresponds to textures, not samplers */
 275
 276 struct panfrost_sampler_view {
 277         struct pipe_sampler_view base;
 278         struct panfrost_bo *bo;
 279         struct mali_bifrost_texture_packed bifrost_descriptor;
 280         mali_ptr texture_bo;
 281         uint64_t modifier;
 282 };
 283
 284 static inline struct panfrost_context *
 285 pan_context(struct pipe_context *pcontext)
 286 {
 287         return (struct panfrost_context *) pcontext;
 288 }
 289
 290 static inline struct panfrost_shader_state *
 291 panfrost_get_shader_state(struct panfrost_context *ctx,
 292                           enum pipe_shader_type st)
 293 {
 294         struct panfrost_shader_variants *all = ctx->shader[st];
 295
 296         if (!all)
 297                 return NULL;
 298
 299         return &all->variants[all->active_variant];
 300 }
 301
 302 struct pipe_context *
 303 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 304
 305 bool
 306 panfrost_writes_point_size(struct panfrost_context *ctx);
 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