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