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 MFBD
  29
  30 #define _LARGEFILE64_SOURCE 1
  31 #define CACHE_LINE_SIZE 1024 /* TODO */
  32 #include <sys/mman.h>
  33 #include <assert.h>
  34 #include "pan_resource.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
  45 /* Forward declare to avoid extra header dep */
  46 struct prim_convert_context;
  47
  48 /* TODO: Handle on newer hardware */
  49 #ifdef MFBD
  50 #define PANFROST_DEFAULT_FBD (MALI_MFBD)
  51 #define PANFROST_FRAMEBUFFER struct bifrost_framebuffer
  52 #else
  53 #define PANFROST_DEFAULT_FBD (MALI_SFBD)
  54 #define PANFROST_FRAMEBUFFER struct mali_single_framebuffer
  55 #endif
  56
  57 #define MAX_DRAW_CALLS 4096
  58 #define MAX_VARYINGS   4096
  59
  60 //#define PAN_DIRTY_CLEAR            (1 << 0)
  61 #define PAN_DIRTY_RASTERIZER (1 << 2)
  62 #define PAN_DIRTY_FS         (1 << 3)
  63 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  64 #define PAN_DIRTY_VS         (1 << 4)
  65 #define PAN_DIRTY_VERTEX     (1 << 5)
  66 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  67 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  68 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  69 #define PAN_DIRTY_TEXTURES   (1 << 9)
  70
  71 struct panfrost_constant_buffer {
  72         bool dirty;
  73         size_t size;
  74         void *buffer;
  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 #define PANFROST_MAX_TRANSIENT_ENTRIES 64
  87
  88 struct panfrost_transient_pool {
  89         /* Memory blocks in the pool */
  90         struct panfrost_memory_entry *entries[PANFROST_MAX_TRANSIENT_ENTRIES];
  91
  92         /* Number of entries we own */
  93         unsigned entry_count;
  94
  95         /* Current entry that we are writing to, zero-indexed, strictly less than entry_count */
  96         unsigned entry_index;
  97
  98         /* Number of bytes into the current entry we are */
  99         off_t entry_offset;
 100
 101         /* Entry size (all entries must be homogenous) */
 102         size_t entry_size;
 103 };
 104
 105 struct panfrost_context {
 106         /* Gallium context */
 107         struct pipe_context base;
 108
 109         /* Bit mask for supported PIPE_DRAW for this hardware */
 110         unsigned draw_modes;
 111
 112         struct pipe_framebuffer_state pipe_framebuffer;
 113
 114         /* The number of concurrent FBOs allowed depends on the number of pools
 115          * used; pools are ringed for parallelism opportunities */
 116
 117         struct panfrost_transient_pool transient_pools[2];
 118         int cmdstream_i;
 119
 120         struct panfrost_memory cmdstream_persistent;
 121         struct panfrost_memory shaders;
 122         struct panfrost_memory scratchpad;
 123         struct panfrost_memory tiler_heap;
 124         struct panfrost_memory varying_mem;
 125         struct panfrost_memory misc_0;
 126         struct panfrost_memory misc_1;
 127         struct panfrost_memory depth_stencil_buffer;
 128
 129         struct {
 130                 unsigned buffers;
 131                 const union pipe_color_union *color;
 132                 double depth;
 133                 unsigned stencil;
 134         } last_clear;
 135
 136         struct panfrost_query *occlusion_query;
 137
 138         /* Each render job has multiple framebuffer descriptors associated with
 139          * it, used for various purposes with more or less the same format. The
 140          * most obvious is the fragment framebuffer descriptor, which carries
 141          * e.g. clearing information */
 142
 143 #ifdef SFBD
 144         struct mali_single_framebuffer fragment_fbd;
 145 #else
 146         struct bifrost_framebuffer fragment_fbd;
 147
 148         struct bifrost_fb_extra fragment_extra;
 149
 150         struct bifrost_render_target fragment_rts[4];
 151 #endif
 152
 153         /* Each draw has corresponding vertex and tiler payloads */
 154         struct midgard_payload_vertex_tiler payload_vertex;
 155         struct midgard_payload_vertex_tiler payload_tiler;
 156
 157         /* The fragment shader binary itself is pointed here (for the tripipe) but
 158          * also everything else in the shader core, including blending, the
 159          * stencil/depth tests, etc. Refer to the presentations. */
 160
 161         struct mali_shader_meta fragment_shader_core;
 162
 163         /* A frame is composed of a starting set value job, a number of vertex
 164          * and tiler jobs, linked to the fragment job at the end. See the
 165          * presentations for more information how this works */
 166
 167         unsigned draw_count;
 168
 169         mali_ptr set_value_job;
 170         mali_ptr vertex_jobs[MAX_DRAW_CALLS];
 171         mali_ptr tiler_jobs[MAX_DRAW_CALLS];
 172
 173         struct mali_job_descriptor_header *u_set_value_job;
 174         struct mali_job_descriptor_header *u_vertex_jobs[MAX_DRAW_CALLS];
 175         struct mali_job_descriptor_header *u_tiler_jobs[MAX_DRAW_CALLS];
 176
 177         unsigned vertex_job_count;
 178         unsigned tiler_job_count;
 179
 180         /* Per-draw Dirty flags are setup like any other driver */
 181         int dirty;
 182
 183         /* Per frame dirty flag - whether there was a clear. If not, we need to do a partial update, maybe */
 184         bool frame_cleared;
 185
 186         unsigned vertex_count;
 187
 188         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 189
 190         unsigned varying_height;
 191
 192         struct mali_viewport *viewport;
 193         PANFROST_FRAMEBUFFER vt_framebuffer;
 194
 195         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 196
 197         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 198
 199         /* CSOs */
 200         struct panfrost_rasterizer *rasterizer;
 201
 202         struct panfrost_shader_variants *vs;
 203         struct panfrost_shader_variants *fs;
 204
 205         struct panfrost_vertex_state *vertex;
 206
 207         struct pipe_vertex_buffer *vertex_buffers;
 208         unsigned vertex_buffer_count;
 209
 210         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 211         unsigned sampler_count[PIPE_SHADER_TYPES];
 212
 213         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 214         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 215
 216         struct primconvert_context *primconvert;
 217         struct blitter_context *blitter;
 218
 219         struct panfrost_blend_state *blend;
 220
 221         struct pipe_viewport_state pipe_viewport;
 222         struct pipe_scissor_state scissor;
 223         struct pipe_blend_color blend_color;
 224         struct pipe_depth_stencil_alpha_state *depth_stencil;
 225         struct pipe_stencil_ref stencil_ref;
 226 };
 227
 228 /* Corresponds to the CSO */
 229
 230 struct panfrost_rasterizer {
 231         struct pipe_rasterizer_state base;
 232
 233         /* Bitmask of front face, etc */
 234         unsigned tiler_gl_enables;
 235 };
 236
 237 struct panfrost_blend_state {
 238         struct pipe_blend_state base;
 239
 240         /* Whether a blend shader is in use */
 241         bool has_blend_shader;
 242
 243         /* Compiled fixed function command */
 244         struct mali_blend_equation equation;
 245
 246         /* Compiled blend shader */
 247         mali_ptr blend_shader;
 248         int blend_work_count;
 249 };
 250
 251 /* Internal varyings descriptor */
 252 struct panfrost_varyings {
 253         /* Varyings information: stride of each chunk of memory used for
 254          * varyings (similar structure with attributes). Count is just the
 255          * number of vec4's. Buffer count is the number of varying chunks (<=
 256          * count). Height is used to calculate gl_Position's position ("it's
 257          * not a pun, Alyssa!"). Vertex-only varyings == descriptor for
 258          * gl_Position and something else apparently occupying the same space.
 259          * Varyings == main varyings descriptors following typical mali_attr
 260          * conventions. */
 261
 262         unsigned varyings_stride[MAX_VARYINGS];
 263         unsigned varying_count;
 264         unsigned varying_buffer_count;
 265
 266         /* Map of the actual varyings buffer */
 267         uint8_t *varyings_buffer_cpu;
 268         mali_ptr varyings_descriptor;
 269         mali_ptr varyings_descriptor_fragment;
 270 };
 271
 272 /* Variants bundle together to form the backing CSO, bundling multiple
 273  * shaders with varying emulated features baked in (alpha test
 274  * parameters, etc) */
 275 #define MAX_SHADER_VARIANTS 8
 276
 277 /* A shader state corresponds to the actual, current variant of the shader */
 278 struct panfrost_shader_state {
 279         struct pipe_shader_state *base;
 280
 281         /* Compiled, mapped descriptor, ready for the hardware */
 282         bool compiled;
 283         struct mali_shader_meta *tripipe;
 284         mali_ptr tripipe_gpu;
 285
 286         /* Non-descript information */
 287         int uniform_count;
 288         bool can_discard;
 289         bool writes_point_size;
 290
 291         /* Valid for vertex shaders only due to when this is calculated */
 292         struct panfrost_varyings varyings;
 293
 294         /* Information on this particular shader variant */
 295         struct pipe_alpha_state alpha_state;
 296 };
 297
 298 /* A collection of varyings (the CSO) */
 299 struct panfrost_shader_variants {
 300         struct pipe_shader_state base;
 301
 302         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 303         unsigned variant_count;
 304
 305         /* The current active variant */
 306         unsigned active_variant;
 307 };
 308
 309 struct panfrost_vertex_state {
 310         unsigned num_elements;
 311
 312         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 313         int nr_components[PIPE_MAX_ATTRIBS];
 314
 315         /* The actual attribute meta, prebaked and GPU mapped. TODO: Free memory */
 316         struct mali_attr_meta *hw;
 317         mali_ptr descriptor_ptr;
 318 };
 319
 320 struct panfrost_sampler_state {
 321         struct pipe_sampler_state base;
 322         struct mali_sampler_descriptor hw;
 323 };
 324
 325 /* Misnomer: Sampler view corresponds to textures, not samplers */
 326
 327 struct panfrost_sampler_view {
 328         struct pipe_sampler_view base;
 329         struct mali_texture_descriptor hw;
 330 };
 331
 332 static inline struct panfrost_context *
 333 pan_context(struct pipe_context *pcontext)
 334 {
 335         return (struct panfrost_context *) pcontext;
 336 }
 337
 338 static inline struct panfrost_screen *
 339 pan_screen(struct pipe_screen *p)
 340 {
 341    return (struct panfrost_screen *)p;
 342 }
 343
 344 struct pipe_context *
 345 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 346
 347 void
 348 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 349
 350 struct panfrost_transfer
 351 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler, bool is_elided_tiler);
 352
 353 unsigned
 354 panfrost_get_default_swizzle(unsigned components);
 355
 356 void
 357 panfrost_flush(
 358         struct pipe_context *pipe,
 359         struct pipe_fence_handle **fence,
 360         unsigned flags);
 361
 362 mali_ptr
 363 panfrost_fragment_job(struct panfrost_context *ctx);
 364
 365 void
 366 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 367
 368 #endif