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 #include "midgard/midgard_compile.h"
  46
  47 /* Forward declare to avoid extra header dep */
  48 struct prim_convert_context;
  49
  50 #define MAX_DRAW_CALLS 4096
  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         bool dirty;
  72         size_t size;
  73         void *buffer;
  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 #define PANFROST_MAX_TRANSIENT_ENTRIES 64
  91
  92 struct panfrost_transient_pool {
  93         /* Memory blocks in the pool */
  94         struct panfrost_memory_entry *entries[PANFROST_MAX_TRANSIENT_ENTRIES];
  95
  96         /* Number of entries we own */
  97         unsigned entry_count;
  98
  99         /* Current entry that we are writing to, zero-indexed, strictly less than entry_count */
 100         unsigned entry_index;
 101
 102         /* Number of bytes into the current entry we are */
 103         off_t entry_offset;
 104
 105         /* Entry size (all entries must be homogenous) */
 106         size_t entry_size;
 107 };
 108
 109 struct panfrost_context {
 110         /* Gallium context */
 111         struct pipe_context base;
 112
 113         /* Bound job and map of panfrost_job_key to jobs */
 114         struct panfrost_job *job;
 115         struct hash_table *jobs;
 116
 117         /* panfrost_resource -> panfrost_job */
 118         struct hash_table *write_jobs;
 119
 120         /* Bit mask for supported PIPE_DRAW for this hardware */
 121         unsigned draw_modes;
 122
 123         struct pipe_framebuffer_state pipe_framebuffer;
 124
 125         /* The number of concurrent FBOs allowed depends on the number of pools
 126          * used; pools are ringed for parallelism opportunities */
 127
 128         struct panfrost_transient_pool transient_pools[2];
 129         int cmdstream_i;
 130
 131         struct panfrost_memory cmdstream_persistent;
 132         struct panfrost_memory shaders;
 133         struct panfrost_memory scratchpad;
 134         struct panfrost_memory tiler_heap;
 135         struct panfrost_memory varying_mem;
 136         struct panfrost_memory tiler_polygon_list;
 137         struct panfrost_memory tiler_dummy;
 138         struct panfrost_memory depth_stencil_buffer;
 139
 140         struct panfrost_query *occlusion_query;
 141
 142         /* Each draw has corresponding vertex and tiler payloads */
 143         struct midgard_payload_vertex_tiler payload_vertex;
 144         struct midgard_payload_vertex_tiler payload_tiler;
 145
 146         /* The fragment shader binary itself is pointed here (for the tripipe) but
 147          * also everything else in the shader core, including blending, the
 148          * stencil/depth tests, etc. Refer to the presentations. */
 149
 150         struct mali_shader_meta fragment_shader_core;
 151
 152         /* A frame is composed of a starting set value job, a number of vertex
 153          * and tiler jobs, linked to the fragment job at the end. See the
 154          * presentations for more information how this works */
 155
 156         unsigned draw_count;
 157
 158         mali_ptr set_value_job;
 159         mali_ptr vertex_jobs[MAX_DRAW_CALLS];
 160         mali_ptr tiler_jobs[MAX_DRAW_CALLS];
 161
 162         struct mali_job_descriptor_header *u_set_value_job;
 163         struct mali_job_descriptor_header *u_vertex_jobs[MAX_DRAW_CALLS];
 164         struct mali_job_descriptor_header *u_tiler_jobs[MAX_DRAW_CALLS];
 165
 166         unsigned vertex_job_count;
 167         unsigned tiler_job_count;
 168
 169         /* Per-draw Dirty flags are setup like any other driver */
 170         int dirty;
 171
 172         unsigned vertex_count;
 173
 174         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 175
 176         unsigned varying_height;
 177
 178         struct mali_single_framebuffer vt_framebuffer_sfbd;
 179         struct bifrost_framebuffer vt_framebuffer_mfbd;
 180
 181         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 182
 183         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 184
 185         /* CSOs */
 186         struct panfrost_rasterizer *rasterizer;
 187
 188         struct panfrost_shader_variants *vs;
 189         struct panfrost_shader_variants *fs;
 190
 191         struct panfrost_vertex_state *vertex;
 192
 193         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 194         uint32_t vb_mask;
 195
 196         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 197         unsigned sampler_count[PIPE_SHADER_TYPES];
 198
 199         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 200         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 201
 202         struct primconvert_context *primconvert;
 203         struct blitter_context *blitter;
 204
 205         struct panfrost_blend_state *blend;
 206
 207         struct pipe_viewport_state pipe_viewport;
 208         struct pipe_scissor_state scissor;
 209         struct pipe_blend_color blend_color;
 210         struct pipe_depth_stencil_alpha_state *depth_stencil;
 211         struct pipe_stencil_ref stencil_ref;
 212
 213         /* True for t6XX, false for t8xx. */
 214         bool is_t6xx;
 215
 216         /* If set, we'll require the use of single render-target framebuffer
 217          * descriptors (SFBD), for older hardware -- specifically, <T760 hardware, If
 218          * false, we'll use the MFBD no matter what. New hardware -does- retain support
 219          * for SFBD, and in theory we could flip between them on a per-RT basis, but
 220          * there's no real advantage to doing so */
 221         bool require_sfbd;
 222
 223         uint32_t out_sync;
 224 };
 225
 226 /* Corresponds to the CSO */
 227
 228 struct panfrost_rasterizer {
 229         struct pipe_rasterizer_state base;
 230
 231         /* Bitmask of front face, etc */
 232         unsigned tiler_gl_enables;
 233 };
 234
 235 struct panfrost_blend_state {
 236         struct pipe_blend_state base;
 237
 238         /* Whether a blend shader is in use */
 239         bool has_blend_shader;
 240
 241         /* Compiled fixed function command */
 242         struct mali_blend_equation equation;
 243         float constant;
 244
 245         /* Compiled blend shader */
 246         mali_ptr blend_shader;
 247         int blend_work_count;
 248 };
 249
 250 /* Variants bundle together to form the backing CSO, bundling multiple
 251  * shaders with varying emulated features baked in (alpha test
 252  * parameters, etc) */
 253 #define MAX_SHADER_VARIANTS 8
 254
 255 /* A shader state corresponds to the actual, current variant of the shader */
 256 struct panfrost_shader_state {
 257         struct pipe_shader_state *base;
 258
 259         /* Compiled, mapped descriptor, ready for the hardware */
 260         bool compiled;
 261         struct mali_shader_meta *tripipe;
 262         mali_ptr tripipe_gpu;
 263
 264         /* Non-descript information */
 265         int uniform_count;
 266         bool can_discard;
 267         bool writes_point_size;
 268         bool reads_point_coord;
 269
 270         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 271         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 272
 273         unsigned sysval_count;
 274         unsigned sysval[MAX_SYSVAL_COUNT];
 275
 276         /* Information on this particular shader variant */
 277         struct pipe_alpha_state alpha_state;
 278 };
 279
 280 /* A collection of varyings (the CSO) */
 281 struct panfrost_shader_variants {
 282         struct pipe_shader_state base;
 283
 284         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 285         unsigned variant_count;
 286
 287         /* The current active variant */
 288         unsigned active_variant;
 289 };
 290
 291 struct panfrost_vertex_state {
 292         unsigned num_elements;
 293
 294         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 295         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 296 };
 297
 298 struct panfrost_sampler_state {
 299         struct pipe_sampler_state base;
 300         struct mali_sampler_descriptor hw;
 301 };
 302
 303 /* Misnomer: Sampler view corresponds to textures, not samplers */
 304
 305 struct panfrost_sampler_view {
 306         struct pipe_sampler_view base;
 307         struct mali_texture_descriptor hw;
 308 };
 309
 310 static inline struct panfrost_context *
 311 pan_context(struct pipe_context *pcontext)
 312 {
 313         return (struct panfrost_context *) pcontext;
 314 }
 315
 316 struct pipe_context *
 317 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 318
 319 void
 320 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 321
 322 struct panfrost_transfer
 323 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 324
 325 unsigned
 326 panfrost_get_default_swizzle(unsigned components);
 327
 328 void
 329 panfrost_flush(
 330         struct pipe_context *pipe,
 331         struct pipe_fence_handle **fence,
 332         unsigned flags);
 333
 334 bool
 335 panfrost_is_scanout(struct panfrost_context *ctx);
 336
 337 mali_ptr panfrost_sfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 338 mali_ptr panfrost_mfbd_fragment(struct panfrost_context *ctx, bool has_draws);
 339
 340 struct bifrost_framebuffer
 341 panfrost_emit_mfbd(struct panfrost_context *ctx, unsigned vertex_count);
 342
 343 struct mali_single_framebuffer
 344 panfrost_emit_sfbd(struct panfrost_context *ctx, unsigned vertex_count);
 345
 346 mali_ptr
 347 panfrost_fragment_job(struct panfrost_context *ctx, bool has_draws);
 348
 349 void
 350 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 351
 352 #endif