src/gallium/drivers/etnaviv/etnaviv_resource.c

   1 /*
   2  * Copyright (c) 2012-2015 Etnaviv Project
   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, sub license,
   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
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the 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 NON-INFRINGEMENT. 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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Wladimir J. van der Laan <laanwj@gmail.com>
  25  */
  26
  27 #include "etnaviv_resource.h"
  28
  29 #include "hw/common.xml.h"
  30
  31 #include "etnaviv_context.h"
  32 #include "etnaviv_debug.h"
  33 #include "etnaviv_screen.h"
  34 #include "etnaviv_translate.h"
  35
  36 #include "util/u_inlines.h"
  37 #include "util/u_memory.h"
  38
  39 /* A tile is 4x4 pixels, having 'screen->specs.bits_per_tile' of tile status.
  40  * So, in a buffer of N pixels, there are N / (4 * 4) tiles.
  41  * We need N * screen->specs.bits_per_tile / (4 * 4) bits of tile status, or
  42  * N * screen->specs.bits_per_tile / (4 * 4 * 8) bytes.
  43  */
  44 bool
  45 etna_screen_resource_alloc_ts(struct pipe_screen *pscreen,
  46                               struct etna_resource *rsc)
  47 {
  48    struct etna_screen *screen = etna_screen(pscreen);
  49    size_t rt_ts_size, ts_layer_stride, pixels;
  50
  51    assert(!rsc->ts_bo);
  52
  53    /* TS only for level 0 -- XXX is this formula correct? */
  54    pixels = rsc->levels[0].layer_stride / util_format_get_blocksize(rsc->base.format);
  55    ts_layer_stride = align(pixels * screen->specs.bits_per_tile / 0x80,
  56                            0x100 * screen->specs.pixel_pipes);
  57    rt_ts_size = ts_layer_stride * rsc->base.array_size;
  58    if (rt_ts_size == 0)
  59       return true;
  60
  61    DBG_F(ETNA_DBG_RESOURCE_MSGS, "%p: Allocating tile status of size %zu",
  62          rsc, rt_ts_size);
  63
  64    struct etna_bo *rt_ts;
  65    rt_ts = etna_bo_new(screen->dev, rt_ts_size, DRM_ETNA_GEM_CACHE_WC);
  66
  67    if (unlikely(!rt_ts)) {
  68       BUG("Problem allocating tile status for resource");
  69       return false;
  70    }
  71
  72    rsc->ts_bo = rt_ts;
  73    rsc->levels[0].ts_offset = 0;
  74    rsc->levels[0].ts_layer_stride = ts_layer_stride;
  75    rsc->levels[0].ts_size = rt_ts_size;
  76
  77    /* It is important to initialize the TS, as random pattern
  78     * can result in crashes. Do this on the CPU as this only happens once
  79     * per surface anyway and it's a small area, so it may not be worth
  80     * queuing this to the GPU. */
  81    void *ts_map = etna_bo_map(rt_ts);
  82    memset(ts_map, screen->specs.ts_clear_value, rt_ts_size);
  83
  84    return true;
  85 }
  86
  87 static boolean
  88 etna_screen_can_create_resource(struct pipe_screen *pscreen,
  89                                 const struct pipe_resource *templat)
  90 {
  91    struct etna_screen *screen = etna_screen(pscreen);
  92    if (!translate_samples_to_xyscale(templat->nr_samples, NULL, NULL, NULL))
  93       return false;
  94
  95    /* templat->bind is not set here, so we must use the minimum sizes */
  96    uint max_size =
  97       MIN2(screen->specs.max_rendertarget_size, screen->specs.max_texture_size);
  98
  99    if (templat->width0 > max_size || templat->height0 > max_size)
 100       return false;
 101
 102    return true;
 103 }
 104
 105 static unsigned
 106 setup_miptree(struct etna_resource *rsc, unsigned paddingX, unsigned paddingY,
 107               unsigned msaa_xscale, unsigned msaa_yscale)
 108 {
 109    struct pipe_resource *prsc = &rsc->base;
 110    unsigned level, size = 0;
 111    unsigned width = prsc->width0;
 112    unsigned height = prsc->height0;
 113    unsigned depth = prsc->depth0;
 114
 115    for (level = 0; level <= prsc->last_level; level++) {
 116       struct etna_resource_level *mip = &rsc->levels[level];
 117
 118       mip->width = width;
 119       mip->height = height;
 120       mip->padded_width = align(width * msaa_xscale, paddingX);
 121       mip->padded_height = align(height * msaa_yscale, paddingY);
 122       mip->stride = util_format_get_stride(prsc->format, mip->padded_width);
 123       mip->offset = size;
 124       mip->layer_stride = mip->stride * util_format_get_nblocksy(prsc->format, mip->padded_height);
 125       mip->size = prsc->array_size * mip->layer_stride;
 126
 127       /* align levels to 64 bytes to be able to render to them */
 128       size += align(mip->size, ETNA_PE_ALIGNMENT) * depth;
 129
 130       width = u_minify(width, 1);
 131       height = u_minify(height, 1);
 132       depth = u_minify(depth, 1);
 133    }
 134
 135    return size;
 136 }
 137
 138 /* Create a new resource object, using the given template info */
 139 struct pipe_resource *
 140 etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
 141                     const struct pipe_resource *templat)
 142 {
 143    struct etna_screen *screen = etna_screen(pscreen);
 144    unsigned size;
 145
 146    DBG_F(ETNA_DBG_RESOURCE_MSGS,
 147          "target=%d, format=%s, %ux%ux%u, array_size=%u, "
 148          "last_level=%u, nr_samples=%u, usage=%u, bind=%x, flags=%x",
 149          templat->target, util_format_name(templat->format), templat->width0,
 150          templat->height0, templat->depth0, templat->array_size,
 151          templat->last_level, templat->nr_samples, templat->usage,
 152          templat->bind, templat->flags);
 153
 154    /* Determine scaling for antialiasing, allow override using debug flag */
 155    int nr_samples = templat->nr_samples;
 156    if ((templat->bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL)) &&
 157        !(templat->bind & PIPE_BIND_SAMPLER_VIEW)) {
 158       if (DBG_ENABLED(ETNA_DBG_MSAA_2X))
 159          nr_samples = 2;
 160       if (DBG_ENABLED(ETNA_DBG_MSAA_4X))
 161          nr_samples = 4;
 162    }
 163
 164    int msaa_xscale = 1, msaa_yscale = 1;
 165    if (!translate_samples_to_xyscale(nr_samples, &msaa_xscale, &msaa_yscale, NULL)) {
 166       /* Number of samples not supported */
 167       return NULL;
 168    }
 169
 170    /* If we have the TEXTURE_HALIGN feature, we can always align to the
 171     * resolve engine's width.  If not, we must not align resources used
 172     * only for textures. */
 173    bool rs_align = VIV_FEATURE(screen, chipMinorFeatures1, TEXTURE_HALIGN) ||
 174                    !etna_resource_sampler_only(templat);
 175
 176    /* Determine needed padding (alignment of height/width) */
 177    unsigned paddingX = 0, paddingY = 0;
 178    unsigned halign = TEXTURE_HALIGN_FOUR;
 179    etna_layout_multiple(layout, screen->specs.pixel_pipes, rs_align, &paddingX,
 180                         &paddingY, &halign);
 181    assert(paddingX && paddingY);
 182
 183    if (templat->target != PIPE_BUFFER) {
 184       unsigned min_paddingY = 4 * screen->specs.pixel_pipes;
 185       if (paddingY < min_paddingY)
 186          paddingY = min_paddingY;
 187    }
 188
 189    struct etna_resource *rsc = CALLOC_STRUCT(etna_resource);
 190
 191    if (!rsc)
 192       return NULL;
 193
 194    rsc->base = *templat;
 195    rsc->base.screen = pscreen;
 196    rsc->base.nr_samples = nr_samples;
 197    rsc->layout = layout;
 198    rsc->halign = halign;
 199
 200    pipe_reference_init(&rsc->base.reference, 1);
 201    list_inithead(&rsc->list);
 202
 203    size = setup_miptree(rsc, paddingX, paddingY, msaa_xscale, msaa_yscale);
 204
 205    uint32_t flags = DRM_ETNA_GEM_CACHE_WC;
 206    if (templat->bind & PIPE_BIND_VERTEX_BUFFER)
 207       flags |= DRM_ETNA_GEM_FORCE_MMU;
 208    struct etna_bo *bo = etna_bo_new(screen->dev, size, flags);
 209    if (unlikely(bo == NULL)) {
 210       BUG("Problem allocating video memory for resource");
 211       goto free_rsc;
 212    }
 213
 214    rsc->bo = bo;
 215    rsc->ts_bo = 0; /* TS is only created when first bound to surface */
 216
 217    if (templat->bind & PIPE_BIND_SCANOUT)
 218       rsc->scanout = renderonly_scanout_for_resource(&rsc->base, screen->ro);
 219
 220    if (DBG_ENABLED(ETNA_DBG_ZERO)) {
 221       void *map = etna_bo_map(bo);
 222       memset(map, 0, size);
 223    }
 224
 225    return &rsc->base;
 226
 227 free_rsc:
 228    FREE(rsc);
 229    return NULL;
 230 }
 231
 232 static struct pipe_resource *
 233 etna_resource_create(struct pipe_screen *pscreen,
 234                      const struct pipe_resource *templat)
 235 {
 236    struct etna_screen *screen = etna_screen(pscreen);
 237
 238    /* Figure out what tiling to use -- for now, assume that texture cannot be linear.
 239     * there is a capability LINEAR_TEXTURE_SUPPORT (supported on gc880 and
 240     * gc2000 at least), but not sure how it works.
 241     * Buffers always have LINEAR layout.
 242     */
 243    unsigned layout = ETNA_LAYOUT_LINEAR;
 244    if (etna_resource_sampler_only(templat)) {
 245       /* The buffer is only used for texturing, so create something
 246        * directly compatible with the sampler.  Such a buffer can
 247        * never be rendered to. */
 248       layout = ETNA_LAYOUT_TILED;
 249
 250       if (util_format_is_compressed(templat->format))
 251          layout = ETNA_LAYOUT_LINEAR;
 252    } else if (templat->target != PIPE_BUFFER) {
 253       bool want_multitiled = false;
 254       bool want_supertiled = screen->specs.can_supertile;
 255
 256       /* When this GPU supports single-buffer rendering, don't ever enable
 257        * multi-tiling. This replicates the blob behavior on GC3000.
 258        */
 259       if (!screen->specs.single_buffer)
 260          want_multitiled = screen->specs.pixel_pipes > 1;
 261
 262       /* Keep single byte blocksized resources as tiled, since we
 263        * are unable to use the RS blit to de-tile them. However,
 264        * if they're used as a render target or depth/stencil, they
 265        * must be multi-tiled for GPUs with multiple pixel pipes.
 266        * Ignore depth/stencil here, but it is an error for a render
 267        * target.
 268        */
 269       if (util_format_get_blocksize(templat->format) == 1 &&
 270           !(templat->bind & PIPE_BIND_DEPTH_STENCIL)) {
 271          assert(!(templat->bind & PIPE_BIND_RENDER_TARGET && want_multitiled));
 272          want_multitiled = want_supertiled = false;
 273       }
 274
 275       layout = ETNA_LAYOUT_BIT_TILE;
 276       if (want_multitiled)
 277          layout |= ETNA_LAYOUT_BIT_MULTI;
 278       if (want_supertiled)
 279          layout |= ETNA_LAYOUT_BIT_SUPER;
 280    }
 281
 282    if (templat->target == PIPE_TEXTURE_3D)
 283       layout = ETNA_LAYOUT_LINEAR;
 284
 285    return etna_resource_alloc(pscreen, layout, templat);
 286 }
 287
 288 static void
 289 etna_resource_changed(struct pipe_screen *pscreen, struct pipe_resource *prsc)
 290 {
 291    struct etna_resource *res = etna_resource(prsc);
 292
 293    res->seqno++;
 294 }
 295
 296 static void
 297 etna_resource_destroy(struct pipe_screen *pscreen, struct pipe_resource *prsc)
 298 {
 299    struct etna_resource *rsc = etna_resource(prsc);
 300
 301    if (rsc->bo)
 302       etna_bo_del(rsc->bo);
 303
 304    if (rsc->ts_bo)
 305       etna_bo_del(rsc->ts_bo);
 306
 307    if (rsc->scanout)
 308       renderonly_scanout_destroy(rsc->scanout, etna_screen(pscreen)->ro);
 309
 310    list_delinit(&rsc->list);
 311
 312    pipe_resource_reference(&rsc->texture, NULL);
 313
 314    FREE(rsc);
 315 }
 316
 317 static struct pipe_resource *
 318 etna_resource_from_handle(struct pipe_screen *pscreen,
 319                           const struct pipe_resource *tmpl,
 320                           struct winsys_handle *handle, unsigned usage)
 321 {
 322    struct etna_screen *screen = etna_screen(pscreen);
 323    struct etna_resource *rsc;
 324    struct etna_resource_level *level;
 325    struct pipe_resource *prsc;
 326    struct pipe_resource *ptiled = NULL;
 327
 328    DBG("target=%d, format=%s, %ux%ux%u, array_size=%u, last_level=%u, "
 329        "nr_samples=%u, usage=%u, bind=%x, flags=%x",
 330        tmpl->target, util_format_name(tmpl->format), tmpl->width0,
 331        tmpl->height0, tmpl->depth0, tmpl->array_size, tmpl->last_level,
 332        tmpl->nr_samples, tmpl->usage, tmpl->bind, tmpl->flags);
 333
 334    rsc = CALLOC_STRUCT(etna_resource);
 335    if (!rsc)
 336       return NULL;
 337
 338    level = &rsc->levels[0];
 339    prsc = &rsc->base;
 340
 341    *prsc = *tmpl;
 342
 343    pipe_reference_init(&prsc->reference, 1);
 344    list_inithead(&rsc->list);
 345    prsc->screen = pscreen;
 346
 347    rsc->bo = etna_screen_bo_from_handle(pscreen, handle, &level->stride);
 348    if (!rsc->bo)
 349       goto fail;
 350
 351    rsc->seqno = 1;
 352
 353    level->width = tmpl->width0;
 354    level->height = tmpl->height0;
 355
 356    /* We will be using the RS to copy with this resource, so we must
 357     * ensure that it is appropriately aligned for the RS requirements. */
 358    unsigned paddingX = ETNA_RS_WIDTH_MASK + 1;
 359    unsigned paddingY = (ETNA_RS_HEIGHT_MASK + 1) * screen->specs.pixel_pipes;
 360
 361    level->padded_width = align(level->width, paddingX);
 362    level->padded_height = align(level->height, paddingY);
 363    level->layer_stride = level->stride * util_format_get_nblocksy(prsc->format,
 364                                                                   level->padded_height);
 365
 366    /* The DDX must give us a BO which conforms to our padding size.
 367     * The stride of the BO must be greater or equal to our padded
 368     * stride. The size of the BO must accomodate the padded height. */
 369    if (level->stride < util_format_get_stride(tmpl->format, level->padded_width)) {
 370       BUG("BO stride is too small for RS engine width padding");
 371       goto fail;
 372    }
 373    if (etna_bo_size(rsc->bo) < level->stride * level->padded_height) {
 374       BUG("BO size is too small for RS engine height padding");
 375       goto fail;
 376    }
 377
 378    if (handle->type == DRM_API_HANDLE_TYPE_SHARED && tmpl->bind & PIPE_BIND_RENDER_TARGET) {
 379       /* Render targets are linear in Xorg but must be tiled
 380       * here. It would be nice if dri_drawable_get_format()
 381       * set scanout for these buffers too. */
 382       struct etna_resource *tiled;
 383
 384       ptiled = etna_resource_create(pscreen, tmpl);
 385       if (!ptiled)
 386          goto fail;
 387
 388       tiled = etna_resource(ptiled);
 389       tiled->scanout = renderonly_scanout_for_prime(prsc, screen->ro);
 390       if (!tiled->scanout)
 391          goto fail;
 392
 393       return ptiled;
 394    }
 395
 396    return prsc;
 397
 398 fail:
 399    etna_resource_destroy(pscreen, prsc);
 400    if (ptiled)
 401       etna_resource_destroy(pscreen, ptiled);
 402
 403    return NULL;
 404 }
 405
 406 static boolean
 407 etna_resource_get_handle(struct pipe_screen *pscreen,
 408                          struct pipe_context *pctx,
 409                          struct pipe_resource *prsc,
 410                          struct winsys_handle *handle, unsigned usage)
 411 {
 412    struct etna_resource *rsc = etna_resource(prsc);
 413
 414    if (handle->type == DRM_API_HANDLE_TYPE_KMS &&
 415        renderonly_get_handle(rsc->scanout, handle))
 416       return TRUE;
 417
 418    return etna_screen_bo_get_handle(pscreen, rsc->bo, rsc->levels[0].stride,
 419                                     handle);
 420 }
 421
 422 void
 423 etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
 424                    enum etna_resource_status status)
 425 {
 426    struct etna_resource *rsc;
 427
 428    if (!prsc)
 429       return;
 430
 431    rsc = etna_resource(prsc);
 432    rsc->status |= status;
 433
 434    /* TODO resources can actually be shared across contexts,
 435     * so I'm not sure a single list-head will do the trick? */
 436    debug_assert((rsc->pending_ctx == ctx) || !rsc->pending_ctx);
 437    list_delinit(&rsc->list);
 438    list_addtail(&rsc->list, &ctx->used_resources);
 439    rsc->pending_ctx = ctx;
 440 }
 441
 442 void
 443 etna_resource_screen_init(struct pipe_screen *pscreen)
 444 {
 445    pscreen->can_create_resource = etna_screen_can_create_resource;
 446    pscreen->resource_create = etna_resource_create;
 447    pscreen->resource_from_handle = etna_resource_from_handle;
 448    pscreen->resource_get_handle = etna_resource_get_handle;
 449    pscreen->resource_changed = etna_resource_changed;
 450    pscreen->resource_destroy = etna_resource_destroy;
 451 }