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