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