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, 0x100);
  56    rt_ts_size = ts_layer_stride * rsc->base.array_size;
  57    if (rt_ts_size == 0)
  58       return true;
  59
  60    DBG_F(ETNA_DBG_RESOURCE_MSGS, "%p: Allocating tile status of size %zu",
  61          rsc, rt_ts_size);
  62
  63    struct etna_bo *rt_ts;
  64    rt_ts = etna_bo_new(screen->dev, rt_ts_size, DRM_ETNA_GEM_CACHE_WC);
  65
  66    if (unlikely(!rt_ts)) {
  67       BUG("Problem allocating tile status for resource");
  68       return false;
  69    }
  70
  71    rsc->ts_bo = rt_ts;
  72    rsc->levels[0].ts_offset = 0;
  73    rsc->levels[0].ts_layer_stride = ts_layer_stride;
  74    rsc->levels[0].ts_size = rt_ts_size;
  75
  76    /* It is important to initialize the TS, as random pattern
  77     * can result in crashes. Do this on the CPU as this only happens once
  78     * per surface anyway and it's a small area, so it may not be worth
  79     * queuing this to the GPU. */
  80    void *ts_map = etna_bo_map(rt_ts);
  81    memset(ts_map, screen->specs.ts_clear_value, rt_ts_size);
  82
  83    return true;
  84 }
  85
  86 static boolean
  87 etna_screen_can_create_resource(struct pipe_screen *pscreen,
  88                                 const struct pipe_resource *templat)
  89 {
  90    struct etna_screen *screen = etna_screen(pscreen);
  91    if (!translate_samples_to_xyscale(templat->nr_samples, NULL, NULL, NULL))
  92       return false;
  93
  94    /* templat->bind is not set here, so we must use the minimum sizes */
  95    uint max_size =
  96       MIN2(screen->specs.max_rendertarget_size, screen->specs.max_texture_size);
  97
  98    if (templat->width0 > max_size || templat->height0 > max_size)
  99       return false;
 100
 101    return true;
 102 }
 103
 104 static unsigned
 105 setup_miptree(struct etna_resource *rsc, unsigned paddingX, unsigned paddingY,
 106               unsigned msaa_xscale, unsigned msaa_yscale)
 107 {
 108    struct pipe_resource *prsc = &rsc->base;
 109    unsigned level, size = 0;
 110    unsigned width = prsc->width0;
 111    unsigned height = prsc->height0;
 112    unsigned depth = prsc->depth0;
 113
 114    for (level = 0; level <= prsc->last_level; level++) {
 115       struct etna_resource_level *mip = &rsc->levels[level];
 116
 117       mip->width = width;
 118       mip->height = height;
 119       mip->padded_width = align(width * msaa_xscale, paddingX);
 120       mip->padded_height = align(height * msaa_yscale, paddingY);
 121       mip->stride = util_format_get_stride(prsc->format, mip->padded_width);
 122       mip->offset = size;
 123       mip->layer_stride = mip->stride * util_format_get_nblocksy(prsc->format, mip->padded_height);
 124       mip->size = prsc->array_size * mip->layer_stride;
 125
 126       /* align levels to 64 bytes to be able to render to them */
 127       size += align(mip->size, ETNA_PE_ALIGNMENT) * depth;
 128
 129       width = u_minify(width, 1);
 130       height = u_minify(height, 1);
 131       depth = u_minify(depth, 1);
 132    }
 133
 134    return size;
 135 }
 136
 137 /* Create a new resource object, using the given template info */
 138 struct pipe_resource *
 139 etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
 140                     const struct pipe_resource *templat)
 141 {
 142    struct etna_screen *screen = etna_screen(pscreen);
 143    unsigned size;
 144
 145    DBG_F(ETNA_DBG_RESOURCE_MSGS,
 146          "target=%d, format=%s, %ux%ux%u, array_size=%u, "
 147          "last_level=%u, nr_samples=%u, usage=%u, bind=%x, flags=%x",
 148          templat->target, util_format_name(templat->format), templat->width0,
 149          templat->height0, templat->depth0, templat->array_size,
 150          templat->last_level, templat->nr_samples, templat->usage,
 151          templat->bind, templat->flags);
 152
 153    /* Determine scaling for antialiasing, allow override using debug flag */
 154    int nr_samples = templat->nr_samples;
 155    if ((templat->bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL)) &&
 156        !(templat->bind & PIPE_BIND_SAMPLER_VIEW)) {
 157       if (DBG_ENABLED(ETNA_DBG_MSAA_2X))
 158          nr_samples = 2;
 159       if (DBG_ENABLED(ETNA_DBG_MSAA_4X))
 160          nr_samples = 4;
 161    }
 162
 163    int msaa_xscale = 1, msaa_yscale = 1;
 164    if (!translate_samples_to_xyscale(nr_samples, &msaa_xscale, &msaa_yscale, NULL)) {
 165       /* Number of samples not supported */
 166       return NULL;
 167    }
 168
 169    /* If we have the TEXTURE_HALIGN feature, we can always align to the
 170     * resolve engine's width.  If not, we must not align resources used
 171     * only for textures. */
 172    bool rs_align = VIV_FEATURE(screen, chipMinorFeatures1, TEXTURE_HALIGN) ||
 173                    !etna_resource_sampler_only(templat);
 174
 175    /* Determine needed padding (alignment of height/width) */
 176    unsigned paddingX = 0, paddingY = 0;
 177    unsigned halign = TEXTURE_HALIGN_FOUR;
 178    etna_layout_multiple(layout, screen->specs.pixel_pipes, rs_align, &paddingX,
 179                         &paddingY, &halign);
 180    assert(paddingX && paddingY);
 181
 182    if (templat->bind != PIPE_BUFFER) {
 183       unsigned min_paddingY = 4 * screen->specs.pixel_pipes;
 184       if (paddingY < min_paddingY)
 185          paddingY = min_paddingY;
 186    }
 187
 188    struct etna_resource *rsc = CALLOC_STRUCT(etna_resource);
 189
 190    if (!rsc)
 191       return NULL;
 192
 193    rsc->base = *templat;
 194    rsc->base.screen = pscreen;
 195    rsc->base.nr_samples = nr_samples;
 196    rsc->layout = layout;
 197    rsc->halign = halign;
 198
 199    pipe_reference_init(&rsc->base.reference, 1);
 200    list_inithead(&rsc->list);
 201
 202    size = setup_miptree(rsc, paddingX, paddingY, msaa_xscale, msaa_yscale);
 203
 204    uint32_t flags = DRM_ETNA_GEM_CACHE_WC;
 205    if (templat->bind & PIPE_BIND_VERTEX_BUFFER)
 206       flags |= DRM_ETNA_GEM_FORCE_MMU;
 207    struct etna_bo *bo = etna_bo_new(screen->dev, size, flags);
 208    if (unlikely(bo == NULL)) {
 209       BUG("Problem allocating video memory for resource");
 210       return NULL;
 211    }
 212
 213    rsc->bo = bo;
 214    rsc->ts_bo = 0; /* TS is only created when first bound to surface */
 215
 216    if (templat->bind & PIPE_BIND_SCANOUT)
 217       rsc->scanout = renderonly_scanout_for_resource(&rsc->base, screen->ro);
 218
 219    if (DBG_ENABLED(ETNA_DBG_ZERO)) {
 220       void *map = etna_bo_map(bo);
 221       memset(map, 0, size);
 222    }
 223
 224    return &rsc->base;
 225 }
 226
 227 static struct pipe_resource *
 228 etna_resource_create(struct pipe_screen *pscreen,
 229                      const struct pipe_resource *templat)
 230 {
 231    struct etna_screen *screen = etna_screen(pscreen);
 232
 233    /* Figure out what tiling to use -- for now, assume that textures cannot be
 234     * supertiled, and cannot be linear.
 235     * There is a feature flag SUPERTILED_TEXTURE (not supported on any known hw)
 236     * that may allow this, as well
 237     * as LINEAR_TEXTURE_SUPPORT (supported on gc880 and gc2000 at least), but
 238     * not sure how it works.
 239     * Buffers always have LINEAR layout.
 240     */
 241    unsigned layout = ETNA_LAYOUT_LINEAR;
 242    if (etna_resource_sampler_only(templat)) {
 243       /* The buffer is only used for texturing, so create something
 244        * directly compatible with the sampler.  Such a buffer can
 245        * never be rendered to. */
 246       layout = ETNA_LAYOUT_TILED;
 247
 248       if (util_format_is_compressed(templat->format))
 249          layout = ETNA_LAYOUT_LINEAR;
 250    } else if (templat->target != PIPE_BUFFER) {
 251       bool want_multitiled = screen->specs.pixel_pipes > 1;
 252       bool want_supertiled = screen->specs.can_supertile && !DBG_ENABLED(ETNA_DBG_NO_SUPERTILE);
 253
 254       /* Keep single byte blocksized resources as tiled, since we
 255        * are unable to use the RS blit to de-tile them. However,
 256        * if they're used as a render target or depth/stencil, they
 257        * must be multi-tiled for GPUs with multiple pixel pipes.
 258        * Ignore depth/stencil here, but it is an error for a render
 259        * target.
 260        */
 261       if (util_format_get_blocksize(templat->format) == 1 &&
 262           !(templat->bind & PIPE_BIND_DEPTH_STENCIL)) {
 263          assert(!(templat->bind & PIPE_BIND_RENDER_TARGET && want_multitiled));
 264          want_multitiled = want_supertiled = false;
 265       }
 266
 267       layout = ETNA_LAYOUT_BIT_TILE;
 268       if (want_multitiled)
 269          layout |= ETNA_LAYOUT_BIT_MULTI;
 270       if (want_supertiled)
 271          layout |= ETNA_LAYOUT_BIT_SUPER;
 272    }
 273
 274    if (templat->target == PIPE_TEXTURE_3D)
 275       layout = ETNA_LAYOUT_LINEAR;
 276
 277    return etna_resource_alloc(pscreen, layout, templat);
 278 }
 279
 280 static void
 281 etna_resource_changed(struct pipe_screen *pscreen, struct pipe_resource *prsc)
 282 {
 283    struct etna_resource *res = etna_resource(prsc);
 284
 285    /* Make sure texture is older than the imported renderable buffer,
 286     * so etna_update_sampler_source will copy the pixel data again.
 287     */
 288    if (res->texture)
 289       etna_resource(res->texture)->seqno = res->seqno - 1;
 290 }
 291
 292 static void
 293 etna_resource_destroy(struct pipe_screen *pscreen, struct pipe_resource *prsc)
 294 {
 295    struct etna_resource *rsc = etna_resource(prsc);
 296
 297    if (rsc->bo)
 298       etna_bo_del(rsc->bo);
 299
 300    if (rsc->ts_bo)
 301       etna_bo_del(rsc->ts_bo);
 302
 303    if (rsc->scanout)
 304       renderonly_scanout_destroy(rsc->scanout);
 305
 306    list_delinit(&rsc->list);
 307
 308    pipe_resource_reference(&rsc->texture, NULL);
 309
 310    FREE(rsc);
 311 }
 312
 313 static struct pipe_resource *
 314 etna_resource_from_handle(struct pipe_screen *pscreen,
 315                           const struct pipe_resource *tmpl,
 316                           struct winsys_handle *handle, unsigned usage)
 317 {
 318    struct etna_screen *screen = etna_screen(pscreen);
 319    struct etna_resource *rsc = CALLOC_STRUCT(etna_resource);
 320    struct etna_resource_level *level = &rsc->levels[0];
 321    struct pipe_resource *prsc = &rsc->base;
 322    struct pipe_resource *ptiled = NULL;
 323
 324    DBG("target=%d, format=%s, %ux%ux%u, array_size=%u, last_level=%u, "
 325        "nr_samples=%u, usage=%u, bind=%x, flags=%x",
 326        tmpl->target, util_format_name(tmpl->format), tmpl->width0,
 327        tmpl->height0, tmpl->depth0, tmpl->array_size, tmpl->last_level,
 328        tmpl->nr_samples, tmpl->usage, tmpl->bind, tmpl->flags);
 329
 330    if (!rsc)
 331       return NULL;
 332
 333    *prsc = *tmpl;
 334
 335    pipe_reference_init(&prsc->reference, 1);
 336    list_inithead(&rsc->list);
 337    prsc->screen = pscreen;
 338
 339    rsc->bo = etna_screen_bo_from_handle(pscreen, handle, &level->stride);
 340    if (!rsc->bo)
 341       goto fail;
 342
 343    rsc->seqno = 1;
 344
 345    level->width = tmpl->width0;
 346    level->height = tmpl->height0;
 347
 348    /* We will be using the RS to copy with this resource, so we must
 349     * ensure that it is appropriately aligned for the RS requirements. */
 350    unsigned paddingX = ETNA_RS_WIDTH_MASK + 1;
 351    unsigned paddingY = (ETNA_RS_HEIGHT_MASK + 1) * screen->specs.pixel_pipes;
 352
 353    level->padded_width = align(level->width, paddingX);
 354    level->padded_height = align(level->height, paddingY);
 355
 356    /* The DDX must give us a BO which conforms to our padding size.
 357     * The stride of the BO must be greater or equal to our padded
 358     * stride. The size of the BO must accomodate the padded height. */
 359    if (level->stride < util_format_get_stride(tmpl->format, level->padded_width)) {
 360       BUG("BO stride is too small for RS engine width padding");
 361       goto fail;
 362    }
 363    if (etna_bo_size(rsc->bo) < level->stride * level->padded_height) {
 364       BUG("BO size is too small for RS engine height padding");
 365       goto fail;
 366    }
 367
 368    if (handle->type == DRM_API_HANDLE_TYPE_SHARED && tmpl->bind & PIPE_BIND_RENDER_TARGET) {
 369       /* Render targets are linear in Xorg but must be tiled
 370       * here. It would be nice if dri_drawable_get_format()
 371       * set scanout for these buffers too. */
 372       struct etna_resource *tiled;
 373
 374       ptiled = etna_resource_create(pscreen, tmpl);
 375       if (!ptiled)
 376          goto fail;
 377
 378       tiled = etna_resource(ptiled);
 379       tiled->scanout = renderonly_scanout_for_prime(prsc, screen->ro);
 380       if (!tiled->scanout)
 381          goto fail;
 382
 383       return ptiled;
 384    }
 385
 386    return prsc;
 387
 388 fail:
 389    etna_resource_destroy(pscreen, prsc);
 390    if (ptiled)
 391       etna_resource_destroy(pscreen, ptiled);
 392
 393    return NULL;
 394 }
 395
 396 static boolean
 397 etna_resource_get_handle(struct pipe_screen *pscreen,
 398                          struct pipe_context *pctx,
 399                          struct pipe_resource *prsc,
 400                          struct winsys_handle *handle, unsigned usage)
 401 {
 402    struct etna_resource *rsc = etna_resource(prsc);
 403
 404    if (renderonly_get_handle(rsc->scanout, handle))
 405       return TRUE;
 406
 407    return etna_screen_bo_get_handle(pscreen, rsc->bo, rsc->levels[0].stride,
 408                                     handle);
 409 }
 410
 411 void
 412 etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
 413                    enum etna_resource_status status)
 414 {
 415    struct etna_resource *rsc;
 416
 417    if (!prsc)
 418       return;
 419
 420    rsc = etna_resource(prsc);
 421    rsc->status |= status;
 422
 423    /* TODO resources can actually be shared across contexts,
 424     * so I'm not sure a single list-head will do the trick? */
 425    debug_assert((rsc->pending_ctx == ctx) || !rsc->pending_ctx);
 426    list_delinit(&rsc->list);
 427    list_addtail(&rsc->list, &ctx->used_resources);
 428    rsc->pending_ctx = ctx;
 429 }
 430
 431 void
 432 etna_resource_wait(struct pipe_context *pctx, struct etna_resource *rsc)
 433 {
 434    if (rsc->status & ETNA_PENDING_WRITE) {
 435       struct pipe_fence_handle *fence;
 436       struct pipe_screen *pscreen = pctx->screen;
 437
 438       pctx->flush(pctx, &fence, 0);
 439
 440       if (!pscreen->fence_finish(pscreen, pctx, fence, 5000000000ULL))
 441          BUG("fence timed out (hung GPU?)");
 442
 443       pscreen->fence_reference(pscreen, &fence, NULL);
 444    }
 445 }
 446
 447 void
 448 etna_resource_screen_init(struct pipe_screen *pscreen)
 449 {
 450    pscreen->can_create_resource = etna_screen_can_create_resource;
 451    pscreen->resource_create = etna_resource_create;
 452    pscreen->resource_from_handle = etna_resource_from_handle;
 453    pscreen->resource_get_handle = etna_resource_get_handle;
 454    pscreen->resource_changed = etna_resource_changed;
 455    pscreen->resource_destroy = etna_resource_destroy;
 456 }