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         /* Upload manager for small resident GPU-internal data structures, like
 100          * sampler descriptors. We use an upload manager since the minimum BO
 101          * size from the kernel is 4kb */
 102         struct u_upload_mgr *state_uploader;
 103
 104         /* Bound job batch and map of panfrost_batch_key to job batches */
 105         struct panfrost_batch *batch;
 106         struct hash_table *batches;
 107
 108         /* panfrost_bo -> panfrost_bo_access */
 109         struct hash_table *accessed_bos;
 110
 111         /* Within a launch_grid call.. */
 112         const struct pipe_grid_info *compute_grid;
 113
 114         /* Bit mask for supported PIPE_DRAW for this hardware */
 115         unsigned draw_modes;
 116
 117         struct pipe_framebuffer_state pipe_framebuffer;
 118         struct panfrost_streamout streamout;
 119
 120         bool active_queries;
 121         uint64_t prims_generated;
 122         uint64_t tf_prims_generated;
 123         struct panfrost_query *occlusion_query;
 124
 125         unsigned vertex_count;
 126         unsigned instance_count;
 127         enum pipe_prim_type active_prim;
 128
 129         /* If instancing is enabled, vertex count padded for instance; if
 130          * it is disabled, just equal to plain vertex count */
 131         unsigned padded_count;
 132
 133         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 134
 135         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 136
 137         struct panfrost_rasterizer *rasterizer;
 138         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 139         struct panfrost_vertex_state *vertex;
 140
 141         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 142         uint32_t vb_mask;
 143
 144         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 145         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 146
 147         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 148         unsigned sampler_count[PIPE_SHADER_TYPES];
 149
 150         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 151         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 152
 153         struct primconvert_context *primconvert;
 154         struct blitter_context *blitter;
 155
 156         /* Blitting the wallpaper (the old contents of the framebuffer back to
 157          * itself) uses a dedicated u_blitter instance versus general blit()
 158          * callbacks from Gallium, as the blit() callback can trigger
 159          * wallpapering without Gallium realising, which in turns u_blitter
 160          * errors due to unsupported reucrsion */
 161
 162         struct blitter_context *blitter_wallpaper;
 163         struct panfrost_batch *wallpaper_batch;
 164
 165         struct panfrost_blend_state *blend;
 166
 167         struct pipe_viewport_state pipe_viewport;
 168         struct pipe_scissor_state scissor;
 169         struct pipe_blend_color blend_color;
 170         struct panfrost_zsa_state *depth_stencil;
 171         struct pipe_stencil_ref stencil_ref;
 172         unsigned sample_mask;
 173         unsigned min_samples;
 174
 175         struct panfrost_blend_state blit_blend;
 176 };
 177
 178 /* Corresponds to the CSO */
 179
 180 struct panfrost_rasterizer {
 181         struct pipe_rasterizer_state base;
 182 };
 183
 184 /* Variants bundle together to form the backing CSO, bundling multiple
 185  * shaders with varying emulated features baked in */
 186
 187 /* A shader state corresponds to the actual, current variant of the shader */
 188 struct panfrost_shader_state {
 189         /* Compiled, mapped descriptor, ready for the hardware */
 190         bool compiled;
 191
 192         /* Uploaded shader descriptor (TODO: maybe stuff the packed unuploaded
 193          * bits in a union to save some memory?) */
 194
 195         struct {
 196                 struct pipe_resource *rsrc;
 197                 uint32_t offset;
 198         } upload;
 199
 200         struct mali_shader_packed shader;
 201         struct mali_midgard_properties_packed properties;
 202         struct mali_preload_packed preload;
 203
 204         /* Non-descript information */
 205         unsigned uniform_count;
 206         unsigned work_reg_count;
 207         bool can_discard;
 208         bool writes_point_size;
 209         bool writes_depth;
 210         bool writes_stencil;
 211         bool reads_point_coord;
 212         bool reads_face;
 213         bool reads_frag_coord;
 214         bool writes_global;
 215         unsigned stack_size;
 216         unsigned shared_size;
 217
 218         /* Does the fragment shader have side effects? In particular, if output
 219          * is masked out, is it legal to skip shader execution? */
 220         bool fs_sidefx;
 221
 222         /* For Bifrost - output type for each RT */
 223         enum bifrost_shader_type blend_types[BIFROST_MAX_RENDER_TARGET_COUNT];
 224
 225         unsigned attribute_count, varying_count, ubo_count;
 226         enum mali_format varyings[PIPE_MAX_ATTRIBS];
 227         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 228         struct pipe_stream_output_info stream_output;
 229         uint64_t so_mask;
 230
 231         unsigned sysval_count;
 232         unsigned sysval[MAX_SYSVAL_COUNT];
 233
 234         uint16_t point_sprite_mask;
 235         unsigned point_sprite_upper_left : 1;
 236
 237         /* Should we enable helper invocations */
 238         bool helper_invocations;
 239
 240         /* GPU-executable memory */
 241         struct panfrost_bo *bo;
 242
 243         BITSET_WORD outputs_read;
 244         enum pipe_format rt_formats[8];
 245 };
 246
 247 /* A collection of varyings (the CSO) */
 248 struct panfrost_shader_variants {
 249         /* A panfrost_shader_variants can represent a shader for
 250          * either graphics or compute */
 251
 252         bool is_compute;
 253
 254         union {
 255                 struct pipe_shader_state base;
 256                 struct pipe_compute_state cbase;
 257         };
 258
 259         struct panfrost_shader_state *variants;
 260         unsigned variant_space;
 261
 262         unsigned variant_count;
 263
 264         /* The current active variant */
 265         unsigned active_variant;
 266 };
 267
 268 struct panfrost_vertex_state {
 269         unsigned num_elements;
 270
 271         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 272         unsigned formats[PIPE_MAX_ATTRIBS];
 273 };
 274
 275 struct panfrost_zsa_state {
 276         struct pipe_depth_stencil_alpha_state base;
 277
 278         /* Precomputed stencil state */
 279         struct mali_stencil_packed stencil_front;
 280         struct mali_stencil_packed stencil_back;
 281         u8 stencil_mask_front;
 282         u8 stencil_mask_back;
 283 };
 284
 285 struct panfrost_sampler_state {
 286         struct pipe_sampler_state base;
 287         struct mali_midgard_sampler_packed hw;
 288 };
 289
 290 /* Misnomer: Sampler view corresponds to textures, not samplers */
 291
 292 struct panfrost_sampler_view {
 293         struct pipe_sampler_view base;
 294         struct panfrost_bo *bo;
 295         struct mali_bifrost_texture_packed bifrost_descriptor;
 296         mali_ptr texture_bo;
 297         uint64_t modifier;
 298 };
 299
 300 static inline struct panfrost_context *
 301 pan_context(struct pipe_context *pcontext)
 302 {
 303         return (struct panfrost_context *) pcontext;
 304 }
 305
 306 static inline struct panfrost_shader_state *
 307 panfrost_get_shader_state(struct panfrost_context *ctx,
 308                           enum pipe_shader_type st)
 309 {
 310         struct panfrost_shader_variants *all = ctx->shader[st];
 311
 312         if (!all)
 313                 return NULL;
 314
 315         return &all->variants[all->active_variant];
 316 }
 317
 318 struct pipe_context *
 319 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 320
 321 bool
 322 panfrost_writes_point_size(struct panfrost_context *ctx);
 323
 324 struct panfrost_transfer
 325 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 326
 327 void
 328 panfrost_flush(
 329         struct pipe_context *pipe,
 330         struct pipe_fence_handle **fence,
 331         unsigned flags);
 332
 333 mali_ptr panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 334 mali_ptr panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 335
 336 void
 337 panfrost_attach_mfbd(struct panfrost_batch *batch, unsigned vertex_count);
 338
 339 void
 340 panfrost_attach_sfbd(struct panfrost_batch *batch, unsigned vertex_count);
 341
 342 struct midgard_tiler_descriptor
 343 panfrost_emit_midg_tiler(struct panfrost_batch *batch, unsigned vertex_count);
 344
 345 mali_ptr
 346 panfrost_fragment_job(struct panfrost_batch *batch, bool has_draws);
 347
 348 void
 349 panfrost_shader_compile(struct panfrost_context *ctx,
 350                         enum pipe_shader_ir ir_type,
 351                         const void *ir,
 352                         gl_shader_stage stage,
 353                         struct panfrost_shader_state *state,
 354                         uint64_t *outputs_written);
 355
 356 void
 357 panfrost_create_sampler_view_bo(struct panfrost_sampler_view *so,
 358                                 struct pipe_context *pctx,
 359                                 struct pipe_resource *texture);
 360
 361 /* Instancing */
 362
 363 mali_ptr
 364 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 365
 366 /* Compute */
 367
 368 void
 369 panfrost_compute_context_init(struct pipe_context *pctx);
 370
 371
 372 #endif