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
  36 #include "pipe/p_compiler.h"
  37 #include "pipe/p_config.h"
  38 #include "pipe/p_context.h"
  39 #include "pipe/p_defines.h"
  40 #include "pipe/p_format.h"
  41 #include "pipe/p_screen.h"
  42 #include "pipe/p_state.h"
  43 #include "util/u_blitter.h"
  44 #include "util/hash_table.h"
  45
  46 #include "midgard/midgard_compile.h"
  47 #include "compiler/shader_enums.h"
  48
  49 /* Forward declare to avoid extra header dep */
  50 struct prim_convert_context;
  51
  52 #define MAX_VARYINGS   4096
  53
  54 //#define PAN_DIRTY_CLEAR            (1 << 0)
  55 #define PAN_DIRTY_RASTERIZER (1 << 2)
  56 #define PAN_DIRTY_FS         (1 << 3)
  57 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  58 #define PAN_DIRTY_VS         (1 << 4)
  59 #define PAN_DIRTY_VERTEX     (1 << 5)
  60 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  61 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  62 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  63 #define PAN_DIRTY_TEXTURES   (1 << 9)
  64
  65 #define SET_BIT(lval, bit, cond) \
  66         if (cond) \
  67                 lval |= (bit); \
  68         else \
  69                 lval &= ~(bit);
  70
  71 struct panfrost_constant_buffer {
  72         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  73         uint32_t enabled_mask;
  74         uint32_t dirty_mask;
  75 };
  76
  77 struct panfrost_query {
  78         /* Passthrough from Gallium */
  79         unsigned type;
  80         unsigned index;
  81
  82         union {
  83                 /* For computed queries. 64-bit to prevent overflow */
  84                 struct {
  85                         uint64_t start;
  86                         uint64_t end;
  87                 };
  88
  89                 /* Memory for the GPU to writeback the value of the query */
  90                 struct panfrost_transfer transfer;
  91         };
  92 };
  93
  94 struct panfrost_fence {
  95         struct pipe_reference reference;
  96         int fd;
  97 };
  98
  99 struct panfrost_streamout {
 100         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
 101         uint32_t offsets[PIPE_MAX_SO_BUFFERS];
 102         unsigned num_targets;
 103 };
 104
 105 struct panfrost_context {
 106         /* Gallium context */
 107         struct pipe_context base;
 108
 109         /* Compiler context */
 110         struct midgard_screen compiler;
 111
 112         /* Bound job and map of panfrost_job_key to jobs */
 113         struct panfrost_job *job;
 114         struct hash_table *jobs;
 115
 116         /* panfrost_resource -> panfrost_job */
 117         struct hash_table *write_jobs;
 118
 119         /* Within a launch_grid call.. */
 120         const struct pipe_grid_info *compute_grid;
 121
 122         /* Bit mask for supported PIPE_DRAW for this hardware */
 123         unsigned draw_modes;
 124
 125         struct pipe_framebuffer_state pipe_framebuffer;
 126         struct panfrost_streamout streamout;
 127
 128         struct panfrost_memory cmdstream_persistent;
 129         struct panfrost_memory scratchpad;
 130         struct panfrost_memory tiler_heap;
 131         struct panfrost_memory tiler_dummy;
 132         struct panfrost_memory depth_stencil_buffer;
 133
 134         bool active_queries;
 135         uint64_t prims_generated;
 136         uint64_t tf_prims_generated;
 137         struct panfrost_query *occlusion_query;
 138
 139         /* Each draw has corresponding vertex and tiler payloads */
 140         struct midgard_payload_vertex_tiler payloads[PIPE_SHADER_TYPES];
 141
 142         /* The fragment shader binary itself is pointed here (for the tripipe) but
 143          * also everything else in the shader core, including blending, the
 144          * stencil/depth tests, etc. Refer to the presentations. */
 145
 146         struct mali_shader_meta fragment_shader_core;
 147
 148         /* Per-draw Dirty flags are setup like any other driver */
 149         int dirty;
 150
 151         unsigned vertex_count;
 152         unsigned instance_count;
 153
 154         /* If instancing is enabled, vertex count padded for instance; if
 155          * it is disabled, just equal to plain vertex count */
 156         unsigned padded_count;
 157
 158         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 159
 160         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 161
 162         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 163
 164         struct panfrost_rasterizer *rasterizer;
 165         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 166         struct panfrost_vertex_state *vertex;
 167
 168         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 169         uint32_t vb_mask;
 170
 171         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 172         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 173
 174         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 175         unsigned sampler_count[PIPE_SHADER_TYPES];
 176
 177         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 178         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 179
 180         struct primconvert_context *primconvert;
 181         struct blitter_context *blitter;
 182
 183         /* Blitting the wallpaper (the old contents of the framebuffer back to
 184          * itself) uses a dedicated u_blitter instance versus general blit()
 185          * callbacks from Gallium, as the blit() callback can trigger
 186          * wallpapering without Gallium realising, which in turns u_blitter
 187          * errors due to unsupported reucrsion */
 188
 189         struct blitter_context *blitter_wallpaper;
 190         struct panfrost_job *wallpaper_batch;
 191
 192         struct panfrost_blend_state *blend;
 193
 194         struct pipe_viewport_state pipe_viewport;
 195         struct pipe_scissor_state scissor;
 196         struct pipe_blend_color blend_color;
 197         struct pipe_depth_stencil_alpha_state *depth_stencil;
 198         struct pipe_stencil_ref stencil_ref;
 199
 200         /* True for t6XX, false for t8xx. */
 201         bool is_t6xx;
 202
 203         uint32_t out_sync;
 204 };
 205
 206 /* Corresponds to the CSO */
 207
 208 struct panfrost_rasterizer {
 209         struct pipe_rasterizer_state base;
 210
 211         /* Bitmask of front face, etc */
 212         unsigned tiler_gl_enables;
 213 };
 214
 215 /* Variants bundle together to form the backing CSO, bundling multiple
 216  * shaders with varying emulated features baked in (alpha test
 217  * parameters, etc) */
 218 #define MAX_SHADER_VARIANTS 8
 219
 220 /* A shader state corresponds to the actual, current variant of the shader */
 221 struct panfrost_shader_state {
 222         /* Compiled, mapped descriptor, ready for the hardware */
 223         bool compiled;
 224         struct mali_shader_meta *tripipe;
 225
 226         /* Non-descript information */
 227         int uniform_count;
 228         bool can_discard;
 229         bool writes_point_size;
 230         bool reads_point_coord;
 231         bool reads_face;
 232
 233         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 234         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 235
 236         unsigned sysval_count;
 237         unsigned sysval[MAX_SYSVAL_COUNT];
 238
 239         /* Information on this particular shader variant */
 240         struct pipe_alpha_state alpha_state;
 241
 242         uint16_t point_sprite_mask;
 243         unsigned point_sprite_upper_left : 1;
 244
 245         /* Should we enable helper invocations */
 246         bool helper_invocations;
 247
 248         struct panfrost_bo *bo;
 249 };
 250
 251 /* A collection of varyings (the CSO) */
 252 struct panfrost_shader_variants {
 253         /* A panfrost_shader_variants can represent a shader for
 254          * either graphics or compute */
 255
 256         bool is_compute;
 257
 258         union {
 259                 struct pipe_shader_state base;
 260                 struct pipe_compute_state cbase;
 261         };
 262
 263         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 264         unsigned variant_count;
 265
 266         /* The current active variant */
 267         unsigned active_variant;
 268 };
 269
 270 struct panfrost_vertex_state {
 271         unsigned num_elements;
 272
 273         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 274         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 275 };
 276
 277 struct panfrost_sampler_state {
 278         struct pipe_sampler_state base;
 279         struct mali_sampler_descriptor hw;
 280 };
 281
 282 /* Misnomer: Sampler view corresponds to textures, not samplers */
 283
 284 struct panfrost_sampler_view {
 285         struct pipe_sampler_view base;
 286         struct mali_texture_descriptor hw;
 287         bool manual_stride;
 288 };
 289
 290 static inline struct panfrost_context *
 291 pan_context(struct pipe_context *pcontext)
 292 {
 293         return (struct panfrost_context *) pcontext;
 294 }
 295
 296 struct pipe_context *
 297 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 298
 299 void
 300 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 301
 302 struct panfrost_transfer
 303 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 304
 305 unsigned
 306 panfrost_get_default_swizzle(unsigned components);
 307
 308 void
 309 panfrost_flush(
 310         struct pipe_context *pipe,
 311         struct pipe_fence_handle **fence,
 312         unsigned flags);
 313
 314 bool
 315 panfrost_is_scanout(struct panfrost_context *ctx);
 316
 317 mali_ptr panfrost_sfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 318 mali_ptr panfrost_mfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 319
 320 struct bifrost_framebuffer
 321 panfrost_emit_mfbd(struct panfrost_context *ctx, unsigned vertex_count);
 322
 323 struct mali_single_framebuffer
 324 panfrost_emit_sfbd(struct panfrost_context *ctx, unsigned vertex_count);
 325
 326 mali_ptr
 327 panfrost_fragment_job(struct panfrost_context *ctx, bool has_draws);
 328
 329 void
 330 panfrost_shader_compile(
 331                 struct panfrost_context *ctx,
 332                 struct mali_shader_meta *meta,
 333                 enum pipe_shader_ir ir_type,
 334                 const void *ir,
 335                 gl_shader_stage stage,
 336                 struct panfrost_shader_state *state,
 337                 uint64_t *outputs_written);
 338
 339 void
 340 panfrost_pack_work_groups_compute(
 341         struct mali_vertex_tiler_prefix *out,
 342         unsigned num_x,
 343         unsigned num_y,
 344         unsigned num_z,
 345         unsigned size_x,
 346         unsigned size_y,
 347         unsigned size_z);
 348
 349 void
 350 panfrost_pack_work_groups_fused(
 351         struct mali_vertex_tiler_prefix *vertex,
 352         struct mali_vertex_tiler_prefix *tiler,
 353         unsigned num_x,
 354         unsigned num_y,
 355         unsigned num_z,
 356         unsigned size_x,
 357         unsigned size_y,
 358         unsigned size_z);
 359
 360 /* Instancing */
 361
 362 mali_ptr
 363 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 364
 365 void
 366 panfrost_emit_vertex_data(struct panfrost_job *batch);
 367
 368 struct pan_shift_odd {
 369         unsigned shift;
 370         unsigned odd;
 371 };
 372
 373 struct pan_shift_odd
 374 panfrost_padded_vertex_count(
 375         unsigned vertex_count,
 376         bool primitive_pot);
 377
 378
 379 unsigned
 380 pan_expand_shift_odd(struct pan_shift_odd o);
 381
 382 /* Compute */
 383
 384 void
 385 panfrost_compute_context_init(struct pipe_context *pctx);
 386
 387 /* Varyings */
 388
 389 void
 390 panfrost_emit_varying_descriptor(
 391         struct panfrost_context *ctx,
 392         unsigned vertex_count);
 393
 394 #endif