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
  35 #include "pipe/p_compiler.h"
  36 #include "pipe/p_config.h"
  37 #include "pipe/p_context.h"
  38 #include "pipe/p_defines.h"
  39 #include "pipe/p_format.h"
  40 #include "pipe/p_screen.h"
  41 #include "pipe/p_state.h"
  42 #include "util/u_blitter.h"
  43 #include "util/hash_table.h"
  44
  45 /* Forward declare to avoid extra header dep */
  46 struct prim_convert_context;
  47
  48 #define MAX_DRAW_CALLS 4096
  49 #define MAX_VARYINGS   4096
  50
  51 //#define PAN_DIRTY_CLEAR            (1 << 0)
  52 #define PAN_DIRTY_RASTERIZER (1 << 2)
  53 #define PAN_DIRTY_FS         (1 << 3)
  54 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  55 #define PAN_DIRTY_VS         (1 << 4)
  56 #define PAN_DIRTY_VERTEX     (1 << 5)
  57 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  58 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  59 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  60 #define PAN_DIRTY_TEXTURES   (1 << 9)
  61
  62 #define SET_BIT(lval, bit, cond) \
  63         if (cond) \
  64                 lval |= (bit); \
  65         else \
  66                 lval &= ~(bit);
  67
  68 struct panfrost_constant_buffer {
  69         bool dirty;
  70         size_t size;
  71         void *buffer;
  72 };
  73
  74 struct panfrost_query {
  75         /* Passthrough from Gallium */
  76         unsigned type;
  77         unsigned index;
  78
  79         /* Memory for the GPU to writeback the value of the query */
  80         struct panfrost_transfer transfer;
  81 };
  82
  83 struct panfrost_fence {
  84         struct pipe_reference reference;
  85         int fd;
  86 };
  87
  88 #define PANFROST_MAX_TRANSIENT_ENTRIES 64
  89
  90 struct panfrost_transient_pool {
  91         /* Memory blocks in the pool */
  92         struct panfrost_memory_entry *entries[PANFROST_MAX_TRANSIENT_ENTRIES];
  93
  94         /* Number of entries we own */
  95         unsigned entry_count;
  96
  97         /* Current entry that we are writing to, zero-indexed, strictly less than entry_count */
  98         unsigned entry_index;
  99
 100         /* Number of bytes into the current entry we are */
 101         off_t entry_offset;
 102
 103         /* Entry size (all entries must be homogenous) */
 104         size_t entry_size;
 105 };
 106
 107 struct panfrost_context {
 108         /* Gallium context */
 109         struct pipe_context base;
 110
 111         /* Bound job and map of panfrost_job_key to jobs */
 112         struct panfrost_job *job;
 113         struct hash_table *jobs;
 114
 115         /* Bit mask for supported PIPE_DRAW for this hardware */
 116         unsigned draw_modes;
 117
 118         struct pipe_framebuffer_state pipe_framebuffer;
 119
 120         /* The number of concurrent FBOs allowed depends on the number of pools
 121          * used; pools are ringed for parallelism opportunities */
 122
 123         struct panfrost_transient_pool transient_pools[2];
 124         int cmdstream_i;
 125
 126         struct panfrost_memory cmdstream_persistent;
 127         struct panfrost_memory shaders;
 128         struct panfrost_memory scratchpad;
 129         struct panfrost_memory tiler_heap;
 130         struct panfrost_memory varying_mem;
 131         struct panfrost_memory misc_0;
 132         struct panfrost_memory misc_1;
 133         struct panfrost_memory depth_stencil_buffer;
 134
 135         struct panfrost_query *occlusion_query;
 136
 137         /* Each render job has multiple framebuffer descriptors associated with
 138          * it, used for various purposes with more or less the same format. The
 139          * most obvious is the fragment framebuffer descriptor, which carries
 140          * e.g. clearing information */
 141
 142         union {
 143                 struct mali_single_framebuffer fragment_sfbd;
 144                 struct {
 145                         struct bifrost_framebuffer fragment_mfbd;
 146                         struct bifrost_fb_extra fragment_extra;
 147                         struct bifrost_render_target fragment_rts[4];
 148                 };
 149         };
 150
 151         /* Each draw has corresponding vertex and tiler payloads */
 152         struct midgard_payload_vertex_tiler payload_vertex;
 153         struct midgard_payload_vertex_tiler payload_tiler;
 154
 155         /* The fragment shader binary itself is pointed here (for the tripipe) but
 156          * also everything else in the shader core, including blending, the
 157          * stencil/depth tests, etc. Refer to the presentations. */
 158
 159         struct mali_shader_meta fragment_shader_core;
 160
 161         /* A frame is composed of a starting set value job, a number of vertex
 162          * and tiler jobs, linked to the fragment job at the end. See the
 163          * presentations for more information how this works */
 164
 165         unsigned draw_count;
 166
 167         mali_ptr set_value_job;
 168         mali_ptr vertex_jobs[MAX_DRAW_CALLS];
 169         mali_ptr tiler_jobs[MAX_DRAW_CALLS];
 170
 171         struct mali_job_descriptor_header *u_set_value_job;
 172         struct mali_job_descriptor_header *u_vertex_jobs[MAX_DRAW_CALLS];
 173         struct mali_job_descriptor_header *u_tiler_jobs[MAX_DRAW_CALLS];
 174
 175         unsigned vertex_job_count;
 176         unsigned tiler_job_count;
 177
 178         /* Per-draw Dirty flags are setup like any other driver */
 179         int dirty;
 180
 181         unsigned vertex_count;
 182
 183         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 184
 185         unsigned varying_height;
 186
 187         struct mali_viewport *viewport;
 188         struct mali_single_framebuffer vt_framebuffer_sfbd;
 189         struct bifrost_framebuffer vt_framebuffer_mfbd;
 190
 191         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 192
 193         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 194
 195         /* CSOs */
 196         struct panfrost_rasterizer *rasterizer;
 197
 198         struct panfrost_shader_variants *vs;
 199         struct panfrost_shader_variants *fs;
 200
 201         struct panfrost_vertex_state *vertex;
 202
 203         struct pipe_vertex_buffer *vertex_buffers;
 204         unsigned vertex_buffer_count;
 205
 206         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 207         unsigned sampler_count[PIPE_SHADER_TYPES];
 208
 209         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 210         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 211
 212         struct primconvert_context *primconvert;
 213         struct blitter_context *blitter;
 214
 215         struct panfrost_blend_state *blend;
 216
 217         struct pipe_viewport_state pipe_viewport;
 218         struct pipe_scissor_state scissor;
 219         struct pipe_blend_color blend_color;
 220         struct pipe_depth_stencil_alpha_state *depth_stencil;
 221         struct pipe_stencil_ref stencil_ref;
 222
 223         /* True for t6XX, false for t8xx. */
 224         bool is_t6xx;
 225
 226         /* If set, we'll require the use of single render-target framebuffer
 227          * descriptors (SFBD), for older hardware -- specifically, <T760 hardware, If
 228          * false, we'll use the MFBD no matter what. New hardware -does- retain support
 229          * for SFBD, and in theory we could flip between them on a per-RT basis, but
 230          * there's no real advantage to doing so */
 231         bool require_sfbd;
 232
 233         uint32_t out_sync;
 234 };
 235
 236 /* Corresponds to the CSO */
 237
 238 struct panfrost_rasterizer {
 239         struct pipe_rasterizer_state base;
 240
 241         /* Bitmask of front face, etc */
 242         unsigned tiler_gl_enables;
 243 };
 244
 245 struct panfrost_blend_state {
 246         struct pipe_blend_state base;
 247
 248         /* Whether a blend shader is in use */
 249         bool has_blend_shader;
 250
 251         /* Compiled fixed function command */
 252         struct mali_blend_equation equation;
 253
 254         /* Compiled blend shader */
 255         mali_ptr blend_shader;
 256         int blend_work_count;
 257 };
 258
 259 /* Internal varyings descriptor */
 260 struct panfrost_varyings {
 261         /* Varyings information: stride of each chunk of memory used for
 262          * varyings (similar structure with attributes). Count is just the
 263          * number of vec4's. Buffer count is the number of varying chunks (<=
 264          * count). Height is used to calculate gl_Position's position ("it's
 265          * not a pun, Alyssa!"). Vertex-only varyings == descriptor for
 266          * gl_Position and something else apparently occupying the same space.
 267          * Varyings == main varyings descriptors following typical mali_attr
 268          * conventions. */
 269
 270         unsigned varyings_stride[MAX_VARYINGS];
 271         unsigned varying_count;
 272         unsigned varying_buffer_count;
 273
 274         /* Map of the actual varyings buffer */
 275         uint8_t *varyings_buffer_cpu;
 276         mali_ptr varyings_descriptor;
 277         mali_ptr varyings_descriptor_fragment;
 278 };
 279
 280 /* Variants bundle together to form the backing CSO, bundling multiple
 281  * shaders with varying emulated features baked in (alpha test
 282  * parameters, etc) */
 283 #define MAX_SHADER_VARIANTS 8
 284
 285 /* A shader state corresponds to the actual, current variant of the shader */
 286 struct panfrost_shader_state {
 287         struct pipe_shader_state *base;
 288
 289         /* Compiled, mapped descriptor, ready for the hardware */
 290         bool compiled;
 291         struct mali_shader_meta *tripipe;
 292         mali_ptr tripipe_gpu;
 293
 294         /* Non-descript information */
 295         int uniform_count;
 296         bool can_discard;
 297         bool writes_point_size;
 298
 299         /* Valid for vertex shaders only due to when this is calculated */
 300         struct panfrost_varyings varyings;
 301
 302         /* Information on this particular shader variant */
 303         struct pipe_alpha_state alpha_state;
 304 };
 305
 306 /* A collection of varyings (the CSO) */
 307 struct panfrost_shader_variants {
 308         struct pipe_shader_state base;
 309
 310         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 311         unsigned variant_count;
 312
 313         /* The current active variant */
 314         unsigned active_variant;
 315 };
 316
 317 struct panfrost_vertex_state {
 318         unsigned num_elements;
 319
 320         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 321         int nr_components[PIPE_MAX_ATTRIBS];
 322
 323         /* The actual attribute meta, prebaked and GPU mapped. TODO: Free memory */
 324         struct mali_attr_meta *hw;
 325         mali_ptr descriptor_ptr;
 326 };
 327
 328 struct panfrost_sampler_state {
 329         struct pipe_sampler_state base;
 330         struct mali_sampler_descriptor hw;
 331 };
 332
 333 /* Misnomer: Sampler view corresponds to textures, not samplers */
 334
 335 struct panfrost_sampler_view {
 336         struct pipe_sampler_view base;
 337         struct mali_texture_descriptor hw;
 338 };
 339
 340 static inline struct panfrost_context *
 341 pan_context(struct pipe_context *pcontext)
 342 {
 343         return (struct panfrost_context *) pcontext;
 344 }
 345
 346 static inline struct panfrost_screen *
 347 pan_screen(struct pipe_screen *p)
 348 {
 349    return (struct panfrost_screen *)p;
 350 }
 351
 352 struct pipe_context *
 353 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 354
 355 void
 356 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 357
 358 struct panfrost_transfer
 359 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler, bool is_elided_tiler);
 360
 361 unsigned
 362 panfrost_get_default_swizzle(unsigned components);
 363
 364 void
 365 panfrost_flush(
 366         struct pipe_context *pipe,
 367         struct pipe_fence_handle **fence,
 368         unsigned flags);
 369
 370 bool
 371 panfrost_is_scanout(struct panfrost_context *ctx);
 372
 373 mali_ptr
 374 panfrost_sfbd_fragment(struct panfrost_context *ctx);
 375
 376 mali_ptr
 377 panfrost_mfbd_fragment(struct panfrost_context *ctx);
 378
 379 struct bifrost_framebuffer
 380 panfrost_emit_mfbd(struct panfrost_context *ctx);
 381
 382 struct mali_single_framebuffer
 383 panfrost_emit_sfbd(struct panfrost_context *ctx);
 384
 385 mali_ptr
 386 panfrost_fragment_job(struct panfrost_context *ctx);
 387
 388 void
 389 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 390
 391 #endif