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
  35 #include "pipe/p_compiler.h"
  36 #include "pipe/p_config.h"
  37 #include "pipe/p_context.h"
  38 #include "pipe/p_defines.h"
  39 #include "pipe/p_format.h"
  40 #include "pipe/p_screen.h"
  41 #include "pipe/p_state.h"
  42 #include "util/u_blitter.h"
  43 #include "util/hash_table.h"
  44
  45 /* Forward declare to avoid extra header dep */
  46 struct prim_convert_context;
  47
  48 #define MAX_DRAW_CALLS 4096
  49 #define MAX_VARYINGS   4096
  50
  51 //#define PAN_DIRTY_CLEAR            (1 << 0)
  52 #define PAN_DIRTY_RASTERIZER (1 << 2)
  53 #define PAN_DIRTY_FS         (1 << 3)
  54 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  55 #define PAN_DIRTY_VS         (1 << 4)
  56 #define PAN_DIRTY_VERTEX     (1 << 5)
  57 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  58 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  59 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  60 #define PAN_DIRTY_TEXTURES   (1 << 9)
  61
  62 struct panfrost_constant_buffer {
  63         bool dirty;
  64         size_t size;
  65         void *buffer;
  66 };
  67
  68 struct panfrost_query {
  69         /* Passthrough from Gallium */
  70         unsigned type;
  71         unsigned index;
  72
  73         /* Memory for the GPU to writeback the value of the query */
  74         struct panfrost_transfer transfer;
  75 };
  76
  77 struct panfrost_fence {
  78         struct pipe_reference reference;
  79         int fd;
  80 };
  81
  82 #define PANFROST_MAX_TRANSIENT_ENTRIES 64
  83
  84 struct panfrost_transient_pool {
  85         /* Memory blocks in the pool */
  86         struct panfrost_memory_entry *entries[PANFROST_MAX_TRANSIENT_ENTRIES];
  87
  88         /* Number of entries we own */
  89         unsigned entry_count;
  90
  91         /* Current entry that we are writing to, zero-indexed, strictly less than entry_count */
  92         unsigned entry_index;
  93
  94         /* Number of bytes into the current entry we are */
  95         off_t entry_offset;
  96
  97         /* Entry size (all entries must be homogenous) */
  98         size_t entry_size;
  99 };
 100
 101 struct panfrost_context {
 102         /* Gallium context */
 103         struct pipe_context base;
 104
 105         /* Bound job and map of panfrost_job_key to jobs */
 106         struct panfrost_job *job;
 107         struct hash_table *jobs;
 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 panfrost_query *occlusion_query;
 130
 131         /* Each render job has multiple framebuffer descriptors associated with
 132          * it, used for various purposes with more or less the same format. The
 133          * most obvious is the fragment framebuffer descriptor, which carries
 134          * e.g. clearing information */
 135
 136         union {
 137                 struct mali_single_framebuffer fragment_sfbd;
 138                 struct {
 139                         struct bifrost_framebuffer fragment_mfbd;
 140                         struct bifrost_fb_extra fragment_extra;
 141                         struct bifrost_render_target fragment_rts[4];
 142                 };
 143         };
 144
 145         /* Each draw has corresponding vertex and tiler payloads */
 146         struct midgard_payload_vertex_tiler payload_vertex;
 147         struct midgard_payload_vertex_tiler payload_tiler;
 148
 149         /* The fragment shader binary itself is pointed here (for the tripipe) but
 150          * also everything else in the shader core, including blending, the
 151          * stencil/depth tests, etc. Refer to the presentations. */
 152
 153         struct mali_shader_meta fragment_shader_core;
 154
 155         /* A frame is composed of a starting set value job, a number of vertex
 156          * and tiler jobs, linked to the fragment job at the end. See the
 157          * presentations for more information how this works */
 158
 159         unsigned draw_count;
 160
 161         mali_ptr set_value_job;
 162         mali_ptr vertex_jobs[MAX_DRAW_CALLS];
 163         mali_ptr tiler_jobs[MAX_DRAW_CALLS];
 164
 165         struct mali_job_descriptor_header *u_set_value_job;
 166         struct mali_job_descriptor_header *u_vertex_jobs[MAX_DRAW_CALLS];
 167         struct mali_job_descriptor_header *u_tiler_jobs[MAX_DRAW_CALLS];
 168
 169         unsigned vertex_job_count;
 170         unsigned tiler_job_count;
 171
 172         /* Per-draw Dirty flags are setup like any other driver */
 173         int dirty;
 174
 175         unsigned vertex_count;
 176
 177         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 178
 179         unsigned varying_height;
 180
 181         struct mali_viewport *viewport;
 182         struct mali_single_framebuffer vt_framebuffer_sfbd;
 183         struct bifrost_framebuffer vt_framebuffer_mfbd;
 184
 185         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 186
 187         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 188
 189         /* CSOs */
 190         struct panfrost_rasterizer *rasterizer;
 191
 192         struct panfrost_shader_variants *vs;
 193         struct panfrost_shader_variants *fs;
 194
 195         struct panfrost_vertex_state *vertex;
 196
 197         struct pipe_vertex_buffer *vertex_buffers;
 198         unsigned vertex_buffer_count;
 199
 200         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 201         unsigned sampler_count[PIPE_SHADER_TYPES];
 202
 203         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 204         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 205
 206         struct primconvert_context *primconvert;
 207         struct blitter_context *blitter;
 208
 209         struct panfrost_blend_state *blend;
 210
 211         struct pipe_viewport_state pipe_viewport;
 212         struct pipe_scissor_state scissor;
 213         struct pipe_blend_color blend_color;
 214         struct pipe_depth_stencil_alpha_state *depth_stencil;
 215         struct pipe_stencil_ref stencil_ref;
 216
 217         /* True for t6XX, false for t8xx. */
 218         bool is_t6xx;
 219
 220         /* If set, we'll require the use of single render-target framebuffer
 221          * descriptors (SFBD), for older hardware -- specifically, <T760 hardware, If
 222          * false, we'll use the MFBD no matter what. New hardware -does- retain support
 223          * for SFBD, and in theory we could flip between them on a per-RT basis, but
 224          * there's no real advantage to doing so */
 225         bool require_sfbd;
 226
 227         uint32_t out_sync;
 228 };
 229
 230 /* Corresponds to the CSO */
 231
 232 struct panfrost_rasterizer {
 233         struct pipe_rasterizer_state base;
 234
 235         /* Bitmask of front face, etc */
 236         unsigned tiler_gl_enables;
 237 };
 238
 239 struct panfrost_blend_state {
 240         struct pipe_blend_state base;
 241
 242         /* Whether a blend shader is in use */
 243         bool has_blend_shader;
 244
 245         /* Compiled fixed function command */
 246         struct mali_blend_equation equation;
 247
 248         /* Compiled blend shader */
 249         mali_ptr blend_shader;
 250         int blend_work_count;
 251 };
 252
 253 /* Internal varyings descriptor */
 254 struct panfrost_varyings {
 255         /* Varyings information: stride of each chunk of memory used for
 256          * varyings (similar structure with attributes). Count is just the
 257          * number of vec4's. Buffer count is the number of varying chunks (<=
 258          * count). Height is used to calculate gl_Position's position ("it's
 259          * not a pun, Alyssa!"). Vertex-only varyings == descriptor for
 260          * gl_Position and something else apparently occupying the same space.
 261          * Varyings == main varyings descriptors following typical mali_attr
 262          * conventions. */
 263
 264         unsigned varyings_stride[MAX_VARYINGS];
 265         unsigned varying_count;
 266         unsigned varying_buffer_count;
 267
 268         /* Map of the actual varyings buffer */
 269         uint8_t *varyings_buffer_cpu;
 270         mali_ptr varyings_descriptor;
 271         mali_ptr varyings_descriptor_fragment;
 272 };
 273
 274 /* Variants bundle together to form the backing CSO, bundling multiple
 275  * shaders with varying emulated features baked in (alpha test
 276  * parameters, etc) */
 277 #define MAX_SHADER_VARIANTS 8
 278
 279 /* A shader state corresponds to the actual, current variant of the shader */
 280 struct panfrost_shader_state {
 281         struct pipe_shader_state *base;
 282
 283         /* Compiled, mapped descriptor, ready for the hardware */
 284         bool compiled;
 285         struct mali_shader_meta *tripipe;
 286         mali_ptr tripipe_gpu;
 287
 288         /* Non-descript information */
 289         int uniform_count;
 290         bool can_discard;
 291         bool writes_point_size;
 292
 293         /* Valid for vertex shaders only due to when this is calculated */
 294         struct panfrost_varyings varyings;
 295
 296         /* Information on this particular shader variant */
 297         struct pipe_alpha_state alpha_state;
 298 };
 299
 300 /* A collection of varyings (the CSO) */
 301 struct panfrost_shader_variants {
 302         struct pipe_shader_state base;
 303
 304         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 305         unsigned variant_count;
 306
 307         /* The current active variant */
 308         unsigned active_variant;
 309 };
 310
 311 struct panfrost_vertex_state {
 312         unsigned num_elements;
 313
 314         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 315         int nr_components[PIPE_MAX_ATTRIBS];
 316
 317         /* The actual attribute meta, prebaked and GPU mapped. TODO: Free memory */
 318         struct mali_attr_meta *hw;
 319         mali_ptr descriptor_ptr;
 320 };
 321
 322 struct panfrost_sampler_state {
 323         struct pipe_sampler_state base;
 324         struct mali_sampler_descriptor hw;
 325 };
 326
 327 /* Misnomer: Sampler view corresponds to textures, not samplers */
 328
 329 struct panfrost_sampler_view {
 330         struct pipe_sampler_view base;
 331         struct mali_texture_descriptor hw;
 332 };
 333
 334 static inline struct panfrost_context *
 335 pan_context(struct pipe_context *pcontext)
 336 {
 337         return (struct panfrost_context *) pcontext;
 338 }
 339
 340 static inline struct panfrost_screen *
 341 pan_screen(struct pipe_screen *p)
 342 {
 343    return (struct panfrost_screen *)p;
 344 }
 345
 346 struct pipe_context *
 347 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 348
 349 void
 350 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 351
 352 struct panfrost_transfer
 353 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler, bool is_elided_tiler);
 354
 355 unsigned
 356 panfrost_get_default_swizzle(unsigned components);
 357
 358 void
 359 panfrost_flush(
 360         struct pipe_context *pipe,
 361         struct pipe_fence_handle **fence,
 362         unsigned flags);
 363
 364 mali_ptr
 365 panfrost_fragment_job(struct panfrost_context *ctx);
 366
 367 void
 368 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 369
 370 #endif