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
  48 /* Forward declare to avoid extra header dep */
  49 struct prim_convert_context;
  50
  51 #define MAX_VARYINGS   4096
  52
  53 //#define PAN_DIRTY_CLEAR            (1 << 0)
  54 #define PAN_DIRTY_RASTERIZER (1 << 2)
  55 #define PAN_DIRTY_FS         (1 << 3)
  56 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  57 #define PAN_DIRTY_VS         (1 << 4)
  58 #define PAN_DIRTY_VERTEX     (1 << 5)
  59 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  60 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  61 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  62 #define PAN_DIRTY_TEXTURES   (1 << 9)
  63
  64 #define SET_BIT(lval, bit, cond) \
  65         if (cond) \
  66                 lval |= (bit); \
  67         else \
  68                 lval &= ~(bit);
  69
  70 struct panfrost_constant_buffer {
  71         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  72         uint32_t enabled_mask;
  73         uint32_t dirty_mask;
  74 };
  75
  76 struct panfrost_query {
  77         /* Passthrough from Gallium */
  78         unsigned type;
  79         unsigned index;
  80
  81         /* Memory for the GPU to writeback the value of the query */
  82         struct panfrost_transfer transfer;
  83 };
  84
  85 struct panfrost_fence {
  86         struct pipe_reference reference;
  87         int fd;
  88 };
  89
  90 struct panfrost_context {
  91         /* Gallium context */
  92         struct pipe_context base;
  93
  94         /* Compiler context */
  95         struct midgard_screen compiler;
  96
  97         /* Bound job and map of panfrost_job_key to jobs */
  98         struct panfrost_job *job;
  99         struct hash_table *jobs;
 100
 101         /* panfrost_resource -> panfrost_job */
 102         struct hash_table *write_jobs;
 103
 104         /* Bit mask for supported PIPE_DRAW for this hardware */
 105         unsigned draw_modes;
 106
 107         struct pipe_framebuffer_state pipe_framebuffer;
 108
 109         struct panfrost_memory cmdstream_persistent;
 110         struct panfrost_memory shaders;
 111         struct panfrost_memory scratchpad;
 112         struct panfrost_memory tiler_heap;
 113         struct panfrost_memory tiler_polygon_list;
 114         struct panfrost_memory tiler_dummy;
 115         struct panfrost_memory depth_stencil_buffer;
 116
 117         struct panfrost_query *occlusion_query;
 118
 119         /* Each draw has corresponding vertex and tiler payloads */
 120         struct midgard_payload_vertex_tiler payload_vertex;
 121         struct midgard_payload_vertex_tiler payload_tiler;
 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         /* CSOs */
 149         struct panfrost_rasterizer *rasterizer;
 150
 151         struct panfrost_shader_variants *vs;
 152         struct panfrost_shader_variants *fs;
 153
 154         struct panfrost_vertex_state *vertex;
 155
 156         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 157         uint32_t vb_mask;
 158
 159         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 160         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 161
 162         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 163         unsigned sampler_count[PIPE_SHADER_TYPES];
 164
 165         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 166         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 167
 168         struct primconvert_context *primconvert;
 169         struct blitter_context *blitter;
 170
 171         /* Blitting the wallpaper (the old contents of the framebuffer back to
 172          * itself) uses a dedicated u_blitter instance versus general blit()
 173          * callbacks from Gallium, as the blit() callback can trigger
 174          * wallpapering without Gallium realising, which in turns u_blitter
 175          * errors due to unsupported reucrsion */
 176
 177         struct blitter_context *blitter_wallpaper;
 178         struct panfrost_job *wallpaper_batch;
 179
 180         struct panfrost_blend_state *blend;
 181
 182         struct pipe_viewport_state pipe_viewport;
 183         struct pipe_scissor_state scissor;
 184         struct pipe_blend_color blend_color;
 185         struct pipe_depth_stencil_alpha_state *depth_stencil;
 186         struct pipe_stencil_ref stencil_ref;
 187
 188         /* True for t6XX, false for t8xx. */
 189         bool is_t6xx;
 190
 191         uint32_t out_sync;
 192 };
 193
 194 /* Corresponds to the CSO */
 195
 196 struct panfrost_rasterizer {
 197         struct pipe_rasterizer_state base;
 198
 199         /* Bitmask of front face, etc */
 200         unsigned tiler_gl_enables;
 201 };
 202
 203 /* Variants bundle together to form the backing CSO, bundling multiple
 204  * shaders with varying emulated features baked in (alpha test
 205  * parameters, etc) */
 206 #define MAX_SHADER_VARIANTS 8
 207
 208 /* A shader state corresponds to the actual, current variant of the shader */
 209 struct panfrost_shader_state {
 210         struct pipe_shader_state *base;
 211
 212         /* Compiled, mapped descriptor, ready for the hardware */
 213         bool compiled;
 214         struct mali_shader_meta *tripipe;
 215
 216         /* Non-descript information */
 217         int uniform_count;
 218         bool can_discard;
 219         bool writes_point_size;
 220         bool reads_point_coord;
 221         bool reads_face;
 222
 223         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 224         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 225
 226         unsigned sysval_count;
 227         unsigned sysval[MAX_SYSVAL_COUNT];
 228
 229         /* Information on this particular shader variant */
 230         struct pipe_alpha_state alpha_state;
 231
 232         uint16_t point_sprite_mask;
 233         unsigned point_sprite_upper_left : 1;
 234
 235         /* Should we enable helper invocations */
 236         bool helper_invocations;
 237 };
 238
 239 /* A collection of varyings (the CSO) */
 240 struct panfrost_shader_variants {
 241         struct pipe_shader_state base;
 242
 243         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 244         unsigned variant_count;
 245
 246         /* The current active variant */
 247         unsigned active_variant;
 248 };
 249
 250 struct panfrost_vertex_state {
 251         unsigned num_elements;
 252
 253         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 254         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 255 };
 256
 257 struct panfrost_sampler_state {
 258         struct pipe_sampler_state base;
 259         struct mali_sampler_descriptor hw;
 260 };
 261
 262 /* Misnomer: Sampler view corresponds to textures, not samplers */
 263
 264 struct panfrost_sampler_view {
 265         struct pipe_sampler_view base;
 266         struct mali_texture_descriptor hw;
 267         bool manual_stride;
 268 };
 269
 270 static inline struct panfrost_context *
 271 pan_context(struct pipe_context *pcontext)
 272 {
 273         return (struct panfrost_context *) pcontext;
 274 }
 275
 276 struct pipe_context *
 277 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 278
 279 void
 280 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 281
 282 struct panfrost_transfer
 283 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 284
 285 unsigned
 286 panfrost_get_default_swizzle(unsigned components);
 287
 288 void
 289 panfrost_flush(
 290         struct pipe_context *pipe,
 291         struct pipe_fence_handle **fence,
 292         unsigned flags);
 293
 294 bool
 295 panfrost_is_scanout(struct panfrost_context *ctx);
 296
 297 mali_ptr panfrost_sfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 298 mali_ptr panfrost_mfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 299
 300 struct bifrost_framebuffer
 301 panfrost_emit_mfbd(struct panfrost_context *ctx, unsigned vertex_count);
 302
 303 struct mali_single_framebuffer
 304 panfrost_emit_sfbd(struct panfrost_context *ctx, unsigned vertex_count);
 305
 306 mali_ptr
 307 panfrost_fragment_job(struct panfrost_context *ctx, bool has_draws);
 308
 309 void
 310 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 311
 312 void
 313 panfrost_pack_work_groups_compute(
 314         struct mali_vertex_tiler_prefix *out,
 315         unsigned num_x,
 316         unsigned num_y,
 317         unsigned num_z,
 318         unsigned size_x,
 319         unsigned size_y,
 320         unsigned size_z);
 321
 322 void
 323 panfrost_pack_work_groups_fused(
 324         struct mali_vertex_tiler_prefix *vertex,
 325         struct mali_vertex_tiler_prefix *tiler,
 326         unsigned num_x,
 327         unsigned num_y,
 328         unsigned num_z,
 329         unsigned size_x,
 330         unsigned size_y,
 331         unsigned size_z);
 332
 333 /* Instancing */
 334
 335 mali_ptr
 336 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 337
 338 void
 339 panfrost_emit_vertex_data(struct panfrost_job *batch);
 340
 341 struct pan_shift_odd {
 342         unsigned shift;
 343         unsigned odd;
 344 };
 345
 346 struct pan_shift_odd
 347 panfrost_padded_vertex_count(
 348         unsigned vertex_count,
 349         bool primitive_pot);
 350
 351
 352 unsigned
 353 pan_expand_shift_odd(struct pan_shift_odd o);
 354
 355
 356 #endif