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         /* Bit mask for supported PIPE_DRAW for this hardware */
 118         unsigned draw_modes;
 119
 120         struct pipe_framebuffer_state pipe_framebuffer;
 121
 122         /* The number of concurrent FBOs allowed depends on the number of pools
 123          * used; pools are ringed for parallelism opportunities */
 124
 125         struct panfrost_transient_pool transient_pools[2];
 126         int cmdstream_i;
 127
 128         struct panfrost_memory cmdstream_persistent;
 129         struct panfrost_memory shaders;
 130         struct panfrost_memory scratchpad;
 131         struct panfrost_memory tiler_heap;
 132         struct panfrost_memory varying_mem;
 133         struct panfrost_memory misc_0;
 134         struct panfrost_memory misc_1;
 135         struct panfrost_memory depth_stencil_buffer;
 136
 137         struct panfrost_query *occlusion_query;
 138
 139         /* Each draw has corresponding vertex and tiler payloads */
 140         struct midgard_payload_vertex_tiler payload_vertex;
 141         struct midgard_payload_vertex_tiler payload_tiler;
 142
 143         /* The fragment shader binary itself is pointed here (for the tripipe) but
 144          * also everything else in the shader core, including blending, the
 145          * stencil/depth tests, etc. Refer to the presentations. */
 146
 147         struct mali_shader_meta fragment_shader_core;
 148
 149         /* A frame is composed of a starting set value job, a number of vertex
 150          * and tiler jobs, linked to the fragment job at the end. See the
 151          * presentations for more information how this works */
 152
 153         unsigned draw_count;
 154
 155         mali_ptr set_value_job;
 156         mali_ptr vertex_jobs[MAX_DRAW_CALLS];
 157         mali_ptr tiler_jobs[MAX_DRAW_CALLS];
 158
 159         struct mali_job_descriptor_header *u_set_value_job;
 160         struct mali_job_descriptor_header *u_vertex_jobs[MAX_DRAW_CALLS];
 161         struct mali_job_descriptor_header *u_tiler_jobs[MAX_DRAW_CALLS];
 162
 163         unsigned vertex_job_count;
 164         unsigned tiler_job_count;
 165
 166         /* Per-draw Dirty flags are setup like any other driver */
 167         int dirty;
 168
 169         unsigned vertex_count;
 170
 171         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 172
 173         unsigned varying_height;
 174
 175         struct mali_single_framebuffer vt_framebuffer_sfbd;
 176         struct bifrost_framebuffer vt_framebuffer_mfbd;
 177
 178         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 179
 180         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 181
 182         /* CSOs */
 183         struct panfrost_rasterizer *rasterizer;
 184
 185         struct panfrost_shader_variants *vs;
 186         struct panfrost_shader_variants *fs;
 187
 188         struct panfrost_vertex_state *vertex;
 189
 190         struct pipe_vertex_buffer *vertex_buffers;
 191         unsigned vertex_buffer_count;
 192
 193         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 194         unsigned sampler_count[PIPE_SHADER_TYPES];
 195
 196         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 197         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 198
 199         struct primconvert_context *primconvert;
 200         struct blitter_context *blitter;
 201
 202         struct panfrost_blend_state *blend;
 203
 204         struct pipe_viewport_state pipe_viewport;
 205         struct pipe_scissor_state scissor;
 206         struct pipe_blend_color blend_color;
 207         struct pipe_depth_stencil_alpha_state *depth_stencil;
 208         struct pipe_stencil_ref stencil_ref;
 209
 210         /* True for t6XX, false for t8xx. */
 211         bool is_t6xx;
 212
 213         /* If set, we'll require the use of single render-target framebuffer
 214          * descriptors (SFBD), for older hardware -- specifically, <T760 hardware, If
 215          * false, we'll use the MFBD no matter what. New hardware -does- retain support
 216          * for SFBD, and in theory we could flip between them on a per-RT basis, but
 217          * there's no real advantage to doing so */
 218         bool require_sfbd;
 219
 220         uint32_t out_sync;
 221 };
 222
 223 /* Corresponds to the CSO */
 224
 225 struct panfrost_rasterizer {
 226         struct pipe_rasterizer_state base;
 227
 228         /* Bitmask of front face, etc */
 229         unsigned tiler_gl_enables;
 230 };
 231
 232 struct panfrost_blend_state {
 233         struct pipe_blend_state base;
 234
 235         /* Whether a blend shader is in use */
 236         bool has_blend_shader;
 237
 238         /* Compiled fixed function command */
 239         struct mali_blend_equation equation;
 240
 241         /* Compiled blend shader */
 242         mali_ptr blend_shader;
 243         int blend_work_count;
 244 };
 245
 246 /* Variants bundle together to form the backing CSO, bundling multiple
 247  * shaders with varying emulated features baked in (alpha test
 248  * parameters, etc) */
 249 #define MAX_SHADER_VARIANTS 8
 250
 251 /* A shader state corresponds to the actual, current variant of the shader */
 252 struct panfrost_shader_state {
 253         struct pipe_shader_state *base;
 254
 255         /* Compiled, mapped descriptor, ready for the hardware */
 256         bool compiled;
 257         struct mali_shader_meta *tripipe;
 258         mali_ptr tripipe_gpu;
 259
 260         /* Non-descript information */
 261         int uniform_count;
 262         bool can_discard;
 263         bool writes_point_size;
 264         bool reads_point_coord;
 265
 266         unsigned general_varying_stride;
 267         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 268
 269         unsigned sysval_count;
 270         unsigned sysval[MAX_SYSVAL_COUNT];
 271
 272         /* Information on this particular shader variant */
 273         struct pipe_alpha_state alpha_state;
 274 };
 275
 276 /* A collection of varyings (the CSO) */
 277 struct panfrost_shader_variants {
 278         struct pipe_shader_state base;
 279
 280         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 281         unsigned variant_count;
 282
 283         /* The current active variant */
 284         unsigned active_variant;
 285 };
 286
 287 struct panfrost_vertex_state {
 288         unsigned num_elements;
 289
 290         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 291         int nr_components[PIPE_MAX_ATTRIBS];
 292
 293         /* The actual attribute meta, prebaked and GPU mapped. TODO: Free memory */
 294         struct mali_attr_meta *hw;
 295         mali_ptr descriptor_ptr;
 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 static inline struct panfrost_screen *
 317 pan_screen(struct pipe_screen *p)
 318 {
 319    return (struct panfrost_screen *)p;
 320 }
 321
 322 struct pipe_context *
 323 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 324
 325 void
 326 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 327
 328 struct panfrost_transfer
 329 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler, bool is_elided_tiler);
 330
 331 unsigned
 332 panfrost_get_default_swizzle(unsigned components);
 333
 334 void
 335 panfrost_flush(
 336         struct pipe_context *pipe,
 337         struct pipe_fence_handle **fence,
 338         unsigned flags);
 339
 340 bool
 341 panfrost_is_scanout(struct panfrost_context *ctx);
 342
 343 mali_ptr
 344 panfrost_sfbd_fragment(struct panfrost_context *ctx, bool flip_y);
 345
 346 mali_ptr
 347 panfrost_mfbd_fragment(struct panfrost_context *ctx, bool flip_y);
 348
 349 struct bifrost_framebuffer
 350 panfrost_emit_mfbd(struct panfrost_context *ctx);
 351
 352 struct mali_single_framebuffer
 353 panfrost_emit_sfbd(struct panfrost_context *ctx);
 354
 355 mali_ptr
 356 panfrost_fragment_job(struct panfrost_context *ctx);
 357
 358 void
 359 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 360
 361 #endif