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_target {
  90         struct pipe_stream_output_target base;
  91         uint32_t offset;
  92 };
  93
  94 struct panfrost_streamout {
  95         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
  96         unsigned num_targets;
  97 };
  98
  99 struct panfrost_context {
 100         /* Gallium context */
 101         struct pipe_context base;
 102
 103         /* Upload manager for small resident GPU-internal data structures, like
 104          * sampler descriptors. We use an upload manager since the minimum BO
 105          * size from the kernel is 4kb */
 106         struct u_upload_mgr *state_uploader;
 107
 108         /* Bound job batch and map of panfrost_batch_key to job batches */
 109         struct panfrost_batch *batch;
 110         struct hash_table *batches;
 111
 112         /* panfrost_bo -> panfrost_bo_access */
 113         struct hash_table *accessed_bos;
 114
 115         /* Within a launch_grid call.. */
 116         const struct pipe_grid_info *compute_grid;
 117
 118         /* Bit mask for supported PIPE_DRAW for this hardware */
 119         unsigned draw_modes;
 120
 121         struct pipe_framebuffer_state pipe_framebuffer;
 122         struct panfrost_streamout streamout;
 123
 124         bool active_queries;
 125         uint64_t prims_generated;
 126         uint64_t tf_prims_generated;
 127         struct panfrost_query *occlusion_query;
 128
 129         unsigned vertex_count;
 130         unsigned instance_count;
 131         unsigned offset_start;
 132         enum pipe_prim_type active_prim;
 133
 134         /* If instancing is enabled, vertex count padded for instance; if
 135          * it is disabled, just equal to plain vertex count */
 136         unsigned padded_count;
 137
 138         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 139
 140         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 141
 142         struct panfrost_rasterizer *rasterizer;
 143         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 144         struct panfrost_vertex_state *vertex;
 145
 146         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 147         uint32_t vb_mask;
 148
 149         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 150         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 151
 152         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 153         unsigned sampler_count[PIPE_SHADER_TYPES];
 154
 155         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 156         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 157
 158         struct primconvert_context *primconvert;
 159         struct blitter_context *blitter;
 160
 161         /* Blitting the wallpaper (the old contents of the framebuffer back to
 162          * itself) uses a dedicated u_blitter instance versus general blit()
 163          * callbacks from Gallium, as the blit() callback can trigger
 164          * wallpapering without Gallium realising, which in turns u_blitter
 165          * errors due to unsupported reucrsion */
 166
 167         struct blitter_context *blitter_wallpaper;
 168         struct panfrost_batch *wallpaper_batch;
 169
 170         struct panfrost_blend_state *blend;
 171
 172         struct pipe_viewport_state pipe_viewport;
 173         struct pipe_scissor_state scissor;
 174         struct pipe_blend_color blend_color;
 175         struct panfrost_zsa_state *depth_stencil;
 176         struct pipe_stencil_ref stencil_ref;
 177         unsigned sample_mask;
 178         unsigned min_samples;
 179
 180         struct panfrost_blend_state blit_blend;
 181 };
 182
 183 /* Corresponds to the CSO */
 184
 185 struct panfrost_rasterizer {
 186         struct pipe_rasterizer_state base;
 187 };
 188
 189 /* Variants bundle together to form the backing CSO, bundling multiple
 190  * shaders with varying emulated features baked in */
 191
 192 /* A shader state corresponds to the actual, current variant of the shader */
 193 struct panfrost_shader_state {
 194         /* Compiled, mapped descriptor, ready for the hardware */
 195         bool compiled;
 196
 197         /* Uploaded shader descriptor (TODO: maybe stuff the packed unuploaded
 198          * bits in a union to save some memory?) */
 199
 200         struct {
 201                 struct pipe_resource *rsrc;
 202                 uint32_t offset;
 203         } upload;
 204
 205         struct mali_shader_packed shader;
 206         struct mali_midgard_properties_packed properties;
 207         struct mali_preload_packed preload;
 208
 209         /* Non-descript information */
 210         unsigned uniform_count;
 211         unsigned work_reg_count;
 212         bool can_discard;
 213         bool writes_point_size;
 214         bool writes_depth;
 215         bool writes_stencil;
 216         bool reads_point_coord;
 217         bool reads_face;
 218         bool reads_frag_coord;
 219         bool writes_global;
 220         unsigned stack_size;
 221         unsigned shared_size;
 222
 223         /* Does the fragment shader have side effects? In particular, if output
 224          * is masked out, is it legal to skip shader execution? */
 225         bool fs_sidefx;
 226
 227         /* For Bifrost - output type for each RT */
 228         enum bifrost_shader_type blend_types[BIFROST_MAX_RENDER_TARGET_COUNT];
 229
 230         unsigned attribute_count, varying_count, ubo_count;
 231         enum mali_format varyings[PIPE_MAX_ATTRIBS];
 232         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 233         struct pipe_stream_output_info stream_output;
 234         uint64_t so_mask;
 235
 236         unsigned sysval_count;
 237         unsigned sysval[MAX_SYSVAL_COUNT];
 238
 239         /* Should we enable helper invocations */
 240         bool helper_invocations;
 241
 242         /* GPU-executable memory */
 243         struct panfrost_bo *bo;
 244
 245         BITSET_WORD outputs_read;
 246         enum pipe_format rt_formats[8];
 247 };
 248
 249 /* A collection of varyings (the CSO) */
 250 struct panfrost_shader_variants {
 251         /* A panfrost_shader_variants can represent a shader for
 252          * either graphics or compute */
 253
 254         bool is_compute;
 255
 256         union {
 257                 struct pipe_shader_state base;
 258                 struct pipe_compute_state cbase;
 259         };
 260
 261         struct panfrost_shader_state *variants;
 262         unsigned variant_space;
 263
 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         unsigned formats[PIPE_MAX_ATTRIBS];
 275 };
 276
 277 struct panfrost_zsa_state {
 278         struct pipe_depth_stencil_alpha_state base;
 279
 280         /* Precomputed stencil state */
 281         struct mali_stencil_packed stencil_front;
 282         struct mali_stencil_packed stencil_back;
 283         u8 stencil_mask_front;
 284         u8 stencil_mask_back;
 285 };
 286
 287 struct panfrost_sampler_state {
 288         struct pipe_sampler_state base;
 289         struct mali_midgard_sampler_packed hw;
 290 };
 291
 292 /* Misnomer: Sampler view corresponds to textures, not samplers */
 293
 294 struct panfrost_sampler_view {
 295         struct pipe_sampler_view base;
 296         struct panfrost_bo *bo;
 297         struct mali_bifrost_texture_packed bifrost_descriptor;
 298         mali_ptr texture_bo;
 299         uint64_t modifier;
 300 };
 301
 302 static inline struct panfrost_context *
 303 pan_context(struct pipe_context *pcontext)
 304 {
 305         return (struct panfrost_context *) pcontext;
 306 }
 307
 308 static inline struct panfrost_streamout_target *
 309 pan_so_target(struct pipe_stream_output_target *target)
 310 {
 311         return (struct panfrost_streamout_target *)target;
 312 }
 313
 314 static inline struct panfrost_shader_state *
 315 panfrost_get_shader_state(struct panfrost_context *ctx,
 316                           enum pipe_shader_type st)
 317 {
 318         struct panfrost_shader_variants *all = ctx->shader[st];
 319
 320         if (!all)
 321                 return NULL;
 322
 323         return &all->variants[all->active_variant];
 324 }
 325
 326 struct pipe_context *
 327 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 328
 329 bool
 330 panfrost_writes_point_size(struct panfrost_context *ctx);
 331
 332 struct panfrost_transfer
 333 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 334
 335 void
 336 panfrost_flush(
 337         struct pipe_context *pipe,
 338         struct pipe_fence_handle **fence,
 339         unsigned flags);
 340
 341 mali_ptr panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 342 mali_ptr panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 343
 344 void
 345 panfrost_attach_mfbd(struct panfrost_batch *batch, unsigned vertex_count);
 346
 347 void
 348 panfrost_attach_sfbd(struct panfrost_batch *batch, unsigned vertex_count);
 349
 350 struct midgard_tiler_descriptor
 351 panfrost_emit_midg_tiler(struct panfrost_batch *batch, unsigned vertex_count);
 352
 353 mali_ptr
 354 panfrost_fragment_job(struct panfrost_batch *batch, bool has_draws);
 355
 356 void
 357 panfrost_shader_compile(struct panfrost_context *ctx,
 358                         enum pipe_shader_ir ir_type,
 359                         const void *ir,
 360                         gl_shader_stage stage,
 361                         struct panfrost_shader_state *state,
 362                         uint64_t *outputs_written);
 363
 364 void
 365 panfrost_create_sampler_view_bo(struct panfrost_sampler_view *so,
 366                                 struct pipe_context *pctx,
 367                                 struct pipe_resource *texture);
 368
 369 /* Instancing */
 370
 371 mali_ptr
 372 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 373
 374 /* Compute */
 375
 376 void
 377 panfrost_compute_context_init(struct pipe_context *pctx);
 378
 379
 380 #endif