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
  37 #include "pipe/p_compiler.h"
  38 #include "pipe/p_config.h"
  39 #include "pipe/p_context.h"
  40 #include "pipe/p_defines.h"
  41 #include "pipe/p_format.h"
  42 #include "pipe/p_screen.h"
  43 #include "pipe/p_state.h"
  44 #include "util/u_blitter.h"
  45 #include "util/hash_table.h"
  46
  47 #include "midgard/midgard_compile.h"
  48 #include "compiler/shader_enums.h"
  49
  50 /* Forward declare to avoid extra header dep */
  51 struct prim_convert_context;
  52
  53 #define MAX_VARYINGS   4096
  54
  55 //#define PAN_DIRTY_CLEAR            (1 << 0)
  56 #define PAN_DIRTY_RASTERIZER (1 << 2)
  57 #define PAN_DIRTY_FS         (1 << 3)
  58 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  59 #define PAN_DIRTY_VS         (1 << 4)
  60 #define PAN_DIRTY_VERTEX     (1 << 5)
  61 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  62 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  63 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  64 #define PAN_DIRTY_TEXTURES   (1 << 9)
  65
  66 #define SET_BIT(lval, bit, cond) \
  67         if (cond) \
  68                 lval |= (bit); \
  69         else \
  70                 lval &= ~(bit);
  71
  72 struct panfrost_constant_buffer {
  73         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  74         uint32_t enabled_mask;
  75         uint32_t dirty_mask;
  76 };
  77
  78 struct panfrost_query {
  79         /* Passthrough from Gallium */
  80         unsigned type;
  81         unsigned index;
  82
  83         union {
  84                 /* For computed queries. 64-bit to prevent overflow */
  85                 struct {
  86                         uint64_t start;
  87                         uint64_t end;
  88                 };
  89
  90                 /* Memory for the GPU to writeback the value of the query */
  91                 struct panfrost_transfer transfer;
  92         };
  93 };
  94
  95 struct panfrost_fence {
  96         struct pipe_reference reference;
  97         int fd;
  98 };
  99
 100 struct panfrost_streamout {
 101         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
 102         uint32_t offsets[PIPE_MAX_SO_BUFFERS];
 103         unsigned num_targets;
 104 };
 105
 106 struct panfrost_context {
 107         /* Gallium context */
 108         struct pipe_context base;
 109
 110         /* Compiler context */
 111         struct midgard_screen compiler;
 112
 113         /* Bound job and map of panfrost_job_key to jobs */
 114         struct panfrost_job *job;
 115         struct hash_table *jobs;
 116
 117         /* panfrost_resource -> panfrost_job */
 118         struct hash_table *write_jobs;
 119
 120         /* Within a launch_grid call.. */
 121         const struct pipe_grid_info *compute_grid;
 122
 123         /* Bit mask for supported PIPE_DRAW for this hardware */
 124         unsigned draw_modes;
 125
 126         struct pipe_framebuffer_state pipe_framebuffer;
 127         struct panfrost_streamout streamout;
 128
 129         struct panfrost_memory cmdstream_persistent;
 130         struct panfrost_memory scratchpad;
 131         struct panfrost_memory tiler_heap;
 132         struct panfrost_memory tiler_dummy;
 133         struct panfrost_memory depth_stencil_buffer;
 134
 135         bool active_queries;
 136         uint64_t prims_generated;
 137         uint64_t tf_prims_generated;
 138         struct panfrost_query *occlusion_query;
 139
 140         /* Each draw has corresponding vertex and tiler payloads */
 141         struct midgard_payload_vertex_tiler payloads[PIPE_SHADER_TYPES];
 142
 143         /* The fragment shader binary itself is pointed here (for the tripipe) but
 144          * also everything else in the shader core, including blending, the
 145          * stencil/depth tests, etc. Refer to the presentations. */
 146
 147         struct mali_shader_meta fragment_shader_core;
 148
 149         /* Per-draw Dirty flags are setup like any other driver */
 150         int dirty;
 151
 152         unsigned vertex_count;
 153         unsigned instance_count;
 154         enum pipe_prim_type active_prim;
 155
 156         /* If instancing is enabled, vertex count padded for instance; if
 157          * it is disabled, just equal to plain vertex count */
 158         unsigned padded_count;
 159
 160         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 161
 162         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 163
 164         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 165
 166         struct panfrost_rasterizer *rasterizer;
 167         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 168         struct panfrost_vertex_state *vertex;
 169
 170         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 171         uint32_t vb_mask;
 172
 173         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 174         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 175
 176         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 177         unsigned sampler_count[PIPE_SHADER_TYPES];
 178
 179         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 180         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 181
 182         struct primconvert_context *primconvert;
 183         struct blitter_context *blitter;
 184
 185         /* Blitting the wallpaper (the old contents of the framebuffer back to
 186          * itself) uses a dedicated u_blitter instance versus general blit()
 187          * callbacks from Gallium, as the blit() callback can trigger
 188          * wallpapering without Gallium realising, which in turns u_blitter
 189          * errors due to unsupported reucrsion */
 190
 191         struct blitter_context *blitter_wallpaper;
 192         struct panfrost_job *wallpaper_batch;
 193
 194         struct panfrost_blend_state *blend;
 195
 196         struct pipe_viewport_state pipe_viewport;
 197         struct pipe_scissor_state scissor;
 198         struct pipe_blend_color blend_color;
 199         struct pipe_depth_stencil_alpha_state *depth_stencil;
 200         struct pipe_stencil_ref stencil_ref;
 201
 202         /* True for t6XX, false for t8xx. */
 203         bool is_t6xx;
 204
 205         uint32_t out_sync;
 206
 207         /* While we're busy building up the job for frame N, the GPU is
 208          * still busy executing frame N-1. So hold a reference to
 209          * yesterjob */
 210         int last_fragment_flushed;
 211         struct panfrost_job *last_job;
 212 };
 213
 214 /* Corresponds to the CSO */
 215
 216 struct panfrost_rasterizer {
 217         struct pipe_rasterizer_state base;
 218
 219         /* Bitmask of front face, etc */
 220         unsigned tiler_gl_enables;
 221 };
 222
 223 /* Variants bundle together to form the backing CSO, bundling multiple
 224  * shaders with varying emulated features baked in (alpha test
 225  * parameters, etc) */
 226 #define MAX_SHADER_VARIANTS 8
 227
 228 /* A shader state corresponds to the actual, current variant of the shader */
 229 struct panfrost_shader_state {
 230         /* Compiled, mapped descriptor, ready for the hardware */
 231         bool compiled;
 232         struct mali_shader_meta *tripipe;
 233
 234         /* Non-descript information */
 235         int uniform_count;
 236         bool can_discard;
 237         bool writes_point_size;
 238         bool reads_point_coord;
 239         bool reads_face;
 240         bool reads_frag_coord;
 241
 242         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 243         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 244         struct pipe_stream_output_info stream_output;
 245         uint64_t so_mask;
 246
 247         unsigned sysval_count;
 248         unsigned sysval[MAX_SYSVAL_COUNT];
 249
 250         /* Information on this particular shader variant */
 251         struct pipe_alpha_state alpha_state;
 252
 253         uint16_t point_sprite_mask;
 254         unsigned point_sprite_upper_left : 1;
 255
 256         /* Should we enable helper invocations */
 257         bool helper_invocations;
 258
 259         struct panfrost_bo *bo;
 260 };
 261
 262 /* A collection of varyings (the CSO) */
 263 struct panfrost_shader_variants {
 264         /* A panfrost_shader_variants can represent a shader for
 265          * either graphics or compute */
 266
 267         bool is_compute;
 268
 269         union {
 270                 struct pipe_shader_state base;
 271                 struct pipe_compute_state cbase;
 272         };
 273
 274         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 275         unsigned variant_count;
 276
 277         /* The current active variant */
 278         unsigned active_variant;
 279 };
 280
 281 struct panfrost_vertex_state {
 282         unsigned num_elements;
 283
 284         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 285         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 286 };
 287
 288 struct panfrost_sampler_state {
 289         struct pipe_sampler_state base;
 290         struct mali_sampler_descriptor hw;
 291 };
 292
 293 /* Misnomer: Sampler view corresponds to textures, not samplers */
 294
 295 struct panfrost_sampler_view {
 296         struct pipe_sampler_view base;
 297         struct mali_texture_descriptor hw;
 298         bool manual_stride;
 299 };
 300
 301 static inline struct panfrost_context *
 302 pan_context(struct pipe_context *pcontext)
 303 {
 304         return (struct panfrost_context *) pcontext;
 305 }
 306
 307 struct pipe_context *
 308 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 309
 310 void
 311 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 312
 313 struct panfrost_transfer
 314 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 315
 316 unsigned
 317 panfrost_get_default_swizzle(unsigned components);
 318
 319 void
 320 panfrost_flush(
 321         struct pipe_context *pipe,
 322         struct pipe_fence_handle **fence,
 323         unsigned flags);
 324
 325 bool
 326 panfrost_is_scanout(struct panfrost_context *ctx);
 327
 328 mali_ptr panfrost_sfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 329 mali_ptr panfrost_mfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 330
 331 struct bifrost_framebuffer
 332 panfrost_emit_mfbd(struct panfrost_context *ctx, unsigned vertex_count);
 333
 334 struct mali_single_framebuffer
 335 panfrost_emit_sfbd(struct panfrost_context *ctx, unsigned vertex_count);
 336
 337 mali_ptr
 338 panfrost_fragment_job(struct panfrost_context *ctx, bool has_draws);
 339
 340 void
 341 panfrost_shader_compile(
 342                 struct panfrost_context *ctx,
 343                 struct mali_shader_meta *meta,
 344                 enum pipe_shader_ir ir_type,
 345                 const void *ir,
 346                 gl_shader_stage stage,
 347                 struct panfrost_shader_state *state,
 348                 uint64_t *outputs_written);
 349
 350 /* Instancing */
 351
 352 mali_ptr
 353 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 354
 355 void
 356 panfrost_emit_vertex_data(struct panfrost_job *batch);
 357
 358 struct pan_shift_odd {
 359         unsigned shift;
 360         unsigned odd;
 361 };
 362
 363 struct pan_shift_odd
 364 panfrost_padded_vertex_count(
 365         unsigned vertex_count,
 366         bool primitive_pot);
 367
 368
 369 unsigned
 370 pan_expand_shift_odd(struct pan_shift_odd o);
 371
 372 /* Compute */
 373
 374 void
 375 panfrost_compute_context_init(struct pipe_context *pctx);
 376
 377 /* Varyings */
 378
 379 void
 380 panfrost_emit_varying_descriptor(
 381         struct panfrost_context *ctx,
 382         unsigned vertex_count);
 383
 384 #endif