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