radeonsi: move r600_buffer_common.c and r600_texture.c into radeonsi
authorMarek Olšák <marek.olsak@amd.com>
Sun, 1 Apr 2018 23:01:32 +0000 (19:01 -0400)
committerMarek Olšák <marek.olsak@amd.com>
Thu, 5 Apr 2018 19:34:58 +0000 (15:34 -0400)
Acked-by: Timothy Arceri <tarceri@itsqueeze.com>
src/gallium/drivers/radeon/Makefile.sources
src/gallium/drivers/radeon/r600_buffer_common.c [deleted file]
src/gallium/drivers/radeon/r600_pipe_common.h
src/gallium/drivers/radeon/r600_texture.c [deleted file]
src/gallium/drivers/radeonsi/Makefile.sources
src/gallium/drivers/radeonsi/si_buffer.c [new file with mode: 0644]
src/gallium/drivers/radeonsi/si_pipe.h
src/gallium/drivers/radeonsi/si_texture.c [new file with mode: 0644]

index dd08b2285fae48688082ef3d1c072ed3f7a2d75a..fbd1ab697a965a665456124f0ef2f64819be09e6 100644 (file)
@@ -1,8 +1,6 @@
 C_SOURCES := \
-       r600_buffer_common.c \
        r600_perfcounter.c \
        r600_pipe_common.h \
-       r600_texture.c \
        radeon_uvd.c \
        radeon_uvd.h \
        radeon_vcn_dec.c \
diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c b/src/gallium/drivers/radeon/r600_buffer_common.c
deleted file mode 100644 (file)
index 0af97f4..0000000
+++ /dev/null
@@ -1,760 +0,0 @@
-/*
- * Copyright 2013 Advanced Micro Devices, Inc.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * on the rights to use, copy, modify, merge, publish, distribute, sub
- * license, and/or sell copies of the Software, and to permit persons to whom
- * the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "radeonsi/si_pipe.h"
-#include "util/u_memory.h"
-#include "util/u_upload_mgr.h"
-#include <inttypes.h>
-#include <stdio.h>
-
-bool si_rings_is_buffer_referenced(struct si_context *sctx,
-                                  struct pb_buffer *buf,
-                                  enum radeon_bo_usage usage)
-{
-       if (sctx->b.ws->cs_is_buffer_referenced(sctx->b.gfx_cs, buf, usage)) {
-               return true;
-       }
-       if (radeon_emitted(sctx->b.dma_cs, 0) &&
-           sctx->b.ws->cs_is_buffer_referenced(sctx->b.dma_cs, buf, usage)) {
-               return true;
-       }
-       return false;
-}
-
-void *si_buffer_map_sync_with_rings(struct si_context *sctx,
-                                   struct r600_resource *resource,
-                                   unsigned usage)
-{
-       enum radeon_bo_usage rusage = RADEON_USAGE_READWRITE;
-       bool busy = false;
-
-       assert(!(resource->flags & RADEON_FLAG_SPARSE));
-
-       if (usage & PIPE_TRANSFER_UNSYNCHRONIZED) {
-               return sctx->b.ws->buffer_map(resource->buf, NULL, usage);
-       }
-
-       if (!(usage & PIPE_TRANSFER_WRITE)) {
-               /* have to wait for the last write */
-               rusage = RADEON_USAGE_WRITE;
-       }
-
-       if (radeon_emitted(sctx->b.gfx_cs, sctx->b.initial_gfx_cs_size) &&
-           sctx->b.ws->cs_is_buffer_referenced(sctx->b.gfx_cs,
-                                               resource->buf, rusage)) {
-               if (usage & PIPE_TRANSFER_DONTBLOCK) {
-                       si_flush_gfx_cs(sctx, PIPE_FLUSH_ASYNC, NULL);
-                       return NULL;
-               } else {
-                       si_flush_gfx_cs(sctx, 0, NULL);
-                       busy = true;
-               }
-       }
-       if (radeon_emitted(sctx->b.dma_cs, 0) &&
-           sctx->b.ws->cs_is_buffer_referenced(sctx->b.dma_cs,
-                                               resource->buf, rusage)) {
-               if (usage & PIPE_TRANSFER_DONTBLOCK) {
-                       si_flush_dma_cs(sctx, PIPE_FLUSH_ASYNC, NULL);
-                       return NULL;
-               } else {
-                       si_flush_dma_cs(sctx, 0, NULL);
-                       busy = true;
-               }
-       }
-
-       if (busy || !sctx->b.ws->buffer_wait(resource->buf, 0, rusage)) {
-               if (usage & PIPE_TRANSFER_DONTBLOCK) {
-                       return NULL;
-               } else {
-                       /* We will be wait for the GPU. Wait for any offloaded
-                        * CS flush to complete to avoid busy-waiting in the winsys. */
-                       sctx->b.ws->cs_sync_flush(sctx->b.gfx_cs);
-                       if (sctx->b.dma_cs)
-                               sctx->b.ws->cs_sync_flush(sctx->b.dma_cs);
-               }
-       }
-
-       /* Setting the CS to NULL will prevent doing checks we have done already. */
-       return sctx->b.ws->buffer_map(resource->buf, NULL, usage);
-}
-
-void si_init_resource_fields(struct si_screen *sscreen,
-                            struct r600_resource *res,
-                            uint64_t size, unsigned alignment)
-{
-       struct r600_texture *rtex = (struct r600_texture*)res;
-
-       res->bo_size = size;
-       res->bo_alignment = alignment;
-       res->flags = 0;
-       res->texture_handle_allocated = false;
-       res->image_handle_allocated = false;
-
-       switch (res->b.b.usage) {
-       case PIPE_USAGE_STREAM:
-               res->flags = RADEON_FLAG_GTT_WC;
-               /* fall through */
-       case PIPE_USAGE_STAGING:
-               /* Transfers are likely to occur more often with these
-                * resources. */
-               res->domains = RADEON_DOMAIN_GTT;
-               break;
-       case PIPE_USAGE_DYNAMIC:
-               /* Older kernels didn't always flush the HDP cache before
-                * CS execution
-                */
-               if (sscreen->info.drm_major == 2 &&
-                   sscreen->info.drm_minor < 40) {
-                       res->domains = RADEON_DOMAIN_GTT;
-                       res->flags |= RADEON_FLAG_GTT_WC;
-                       break;
-               }
-               /* fall through */
-       case PIPE_USAGE_DEFAULT:
-       case PIPE_USAGE_IMMUTABLE:
-       default:
-               /* Not listing GTT here improves performance in some
-                * apps. */
-               res->domains = RADEON_DOMAIN_VRAM;
-               res->flags |= RADEON_FLAG_GTT_WC;
-               break;
-       }
-
-       if (res->b.b.target == PIPE_BUFFER &&
-           res->b.b.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
-                             PIPE_RESOURCE_FLAG_MAP_COHERENT)) {
-               /* Use GTT for all persistent mappings with older
-                * kernels, because they didn't always flush the HDP
-                * cache before CS execution.
-                *
-                * Write-combined CPU mappings are fine, the kernel
-                * ensures all CPU writes finish before the GPU
-                * executes a command stream.
-                */
-               if (sscreen->info.drm_major == 2 &&
-                   sscreen->info.drm_minor < 40)
-                       res->domains = RADEON_DOMAIN_GTT;
-       }
-
-       /* Tiled textures are unmappable. Always put them in VRAM. */
-       if ((res->b.b.target != PIPE_BUFFER && !rtex->surface.is_linear) ||
-           res->b.b.flags & SI_RESOURCE_FLAG_UNMAPPABLE) {
-               res->domains = RADEON_DOMAIN_VRAM;
-               res->flags |= RADEON_FLAG_NO_CPU_ACCESS |
-                        RADEON_FLAG_GTT_WC;
-       }
-
-       /* Displayable and shareable surfaces are not suballocated. */
-       if (res->b.b.bind & (PIPE_BIND_SHARED | PIPE_BIND_SCANOUT))
-               res->flags |= RADEON_FLAG_NO_SUBALLOC; /* shareable */
-       else
-               res->flags |= RADEON_FLAG_NO_INTERPROCESS_SHARING;
-
-       if (sscreen->debug_flags & DBG(NO_WC))
-               res->flags &= ~RADEON_FLAG_GTT_WC;
-
-       if (res->b.b.flags & SI_RESOURCE_FLAG_READ_ONLY)
-               res->flags |= RADEON_FLAG_READ_ONLY;
-
-       if (res->b.b.flags & SI_RESOURCE_FLAG_32BIT)
-               res->flags |= RADEON_FLAG_32BIT;
-
-       /* Set expected VRAM and GART usage for the buffer. */
-       res->vram_usage = 0;
-       res->gart_usage = 0;
-       res->max_forced_staging_uploads = 0;
-       res->b.max_forced_staging_uploads = 0;
-
-       if (res->domains & RADEON_DOMAIN_VRAM) {
-               res->vram_usage = size;
-
-               res->max_forced_staging_uploads =
-               res->b.max_forced_staging_uploads =
-                       sscreen->info.has_dedicated_vram &&
-                       size >= sscreen->info.vram_vis_size / 4 ? 1 : 0;
-       } else if (res->domains & RADEON_DOMAIN_GTT) {
-               res->gart_usage = size;
-       }
-}
-
-bool si_alloc_resource(struct si_screen *sscreen,
-                      struct r600_resource *res)
-{
-       struct pb_buffer *old_buf, *new_buf;
-
-       /* Allocate a new resource. */
-       new_buf = sscreen->ws->buffer_create(sscreen->ws, res->bo_size,
-                                            res->bo_alignment,
-                                            res->domains, res->flags);
-       if (!new_buf) {
-               return false;
-       }
-
-       /* Replace the pointer such that if res->buf wasn't NULL, it won't be
-        * NULL. This should prevent crashes with multiple contexts using
-        * the same buffer where one of the contexts invalidates it while
-        * the others are using it. */
-       old_buf = res->buf;
-       res->buf = new_buf; /* should be atomic */
-       res->gpu_address = sscreen->ws->buffer_get_virtual_address(res->buf);
-
-       if (res->flags & RADEON_FLAG_32BIT) {
-               uint64_t start = res->gpu_address;
-               uint64_t last = start + res->bo_size - 1;
-               (void)start;
-               (void)last;
-
-               assert((start >> 32) == sscreen->info.address32_hi);
-               assert((last >> 32) == sscreen->info.address32_hi);
-       }
-
-       pb_reference(&old_buf, NULL);
-
-       util_range_set_empty(&res->valid_buffer_range);
-       res->TC_L2_dirty = false;
-
-       /* Print debug information. */
-       if (sscreen->debug_flags & DBG(VM) && res->b.b.target == PIPE_BUFFER) {
-               fprintf(stderr, "VM start=0x%"PRIX64"  end=0x%"PRIX64" | Buffer %"PRIu64" bytes\n",
-                       res->gpu_address, res->gpu_address + res->buf->size,
-                       res->buf->size);
-       }
-       return true;
-}
-
-static void si_buffer_destroy(struct pipe_screen *screen,
-                             struct pipe_resource *buf)
-{
-       struct r600_resource *rbuffer = r600_resource(buf);
-
-       threaded_resource_deinit(buf);
-       util_range_destroy(&rbuffer->valid_buffer_range);
-       pb_reference(&rbuffer->buf, NULL);
-       FREE(rbuffer);
-}
-
-/* Reallocate the buffer a update all resource bindings where the buffer is
- * bound.
- *
- * This is used to avoid CPU-GPU synchronizations, because it makes the buffer
- * idle by discarding its contents.
- */
-static bool
-si_invalidate_buffer(struct si_context *sctx,
-                    struct r600_resource *rbuffer)
-{
-       /* Shared buffers can't be reallocated. */
-       if (rbuffer->b.is_shared)
-               return false;
-
-       /* Sparse buffers can't be reallocated. */
-       if (rbuffer->flags & RADEON_FLAG_SPARSE)
-               return false;
-
-       /* In AMD_pinned_memory, the user pointer association only gets
-        * broken when the buffer is explicitly re-allocated.
-        */
-       if (rbuffer->b.is_user_ptr)
-               return false;
-
-       /* Check if mapping this buffer would cause waiting for the GPU. */
-       if (si_rings_is_buffer_referenced(sctx, rbuffer->buf, RADEON_USAGE_READWRITE) ||
-           !sctx->b.ws->buffer_wait(rbuffer->buf, 0, RADEON_USAGE_READWRITE)) {
-               uint64_t old_va = rbuffer->gpu_address;
-
-               /* Reallocate the buffer in the same pipe_resource. */
-               si_alloc_resource(sctx->screen, rbuffer);
-               si_rebind_buffer(sctx, &rbuffer->b.b, old_va);
-       } else {
-               util_range_set_empty(&rbuffer->valid_buffer_range);
-       }
-
-       return true;
-}
-
-/* Replace the storage of dst with src. */
-void si_replace_buffer_storage(struct pipe_context *ctx,
-                                struct pipe_resource *dst,
-                                struct pipe_resource *src)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_resource *rdst = r600_resource(dst);
-       struct r600_resource *rsrc = r600_resource(src);
-       uint64_t old_gpu_address = rdst->gpu_address;
-
-       pb_reference(&rdst->buf, rsrc->buf);
-       rdst->gpu_address = rsrc->gpu_address;
-       rdst->b.b.bind = rsrc->b.b.bind;
-       rdst->b.max_forced_staging_uploads = rsrc->b.max_forced_staging_uploads;
-       rdst->max_forced_staging_uploads = rsrc->max_forced_staging_uploads;
-       rdst->flags = rsrc->flags;
-
-       assert(rdst->vram_usage == rsrc->vram_usage);
-       assert(rdst->gart_usage == rsrc->gart_usage);
-       assert(rdst->bo_size == rsrc->bo_size);
-       assert(rdst->bo_alignment == rsrc->bo_alignment);
-       assert(rdst->domains == rsrc->domains);
-
-       si_rebind_buffer(sctx, dst, old_gpu_address);
-}
-
-static void si_invalidate_resource(struct pipe_context *ctx,
-                                  struct pipe_resource *resource)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_resource *rbuffer = r600_resource(resource);
-
-       /* We currently only do anyting here for buffers */
-       if (resource->target == PIPE_BUFFER)
-               (void)si_invalidate_buffer(sctx, rbuffer);
-}
-
-static void *si_buffer_get_transfer(struct pipe_context *ctx,
-                                   struct pipe_resource *resource,
-                                   unsigned usage,
-                                   const struct pipe_box *box,
-                                   struct pipe_transfer **ptransfer,
-                                   void *data, struct r600_resource *staging,
-                                   unsigned offset)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_transfer *transfer;
-
-       if (usage & TC_TRANSFER_MAP_THREADED_UNSYNC)
-               transfer = slab_alloc(&sctx->b.pool_transfers_unsync);
-       else
-               transfer = slab_alloc(&sctx->b.pool_transfers);
-
-       transfer->b.b.resource = NULL;
-       pipe_resource_reference(&transfer->b.b.resource, resource);
-       transfer->b.b.level = 0;
-       transfer->b.b.usage = usage;
-       transfer->b.b.box = *box;
-       transfer->b.b.stride = 0;
-       transfer->b.b.layer_stride = 0;
-       transfer->b.staging = NULL;
-       transfer->offset = offset;
-       transfer->staging = staging;
-       *ptransfer = &transfer->b.b;
-       return data;
-}
-
-static void *si_buffer_transfer_map(struct pipe_context *ctx,
-                                   struct pipe_resource *resource,
-                                   unsigned level,
-                                   unsigned usage,
-                                   const struct pipe_box *box,
-                                   struct pipe_transfer **ptransfer)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_resource *rbuffer = r600_resource(resource);
-       uint8_t *data;
-
-       assert(box->x + box->width <= resource->width0);
-
-       /* From GL_AMD_pinned_memory issues:
-        *
-        *     4) Is glMapBuffer on a shared buffer guaranteed to return the
-        *        same system address which was specified at creation time?
-        *
-        *        RESOLVED: NO. The GL implementation might return a different
-        *        virtual mapping of that memory, although the same physical
-        *        page will be used.
-        *
-        * So don't ever use staging buffers.
-        */
-       if (rbuffer->b.is_user_ptr)
-               usage |= PIPE_TRANSFER_PERSISTENT;
-
-       /* See if the buffer range being mapped has never been initialized,
-        * in which case it can be mapped unsynchronized. */
-       if (!(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
-                      TC_TRANSFER_MAP_NO_INFER_UNSYNCHRONIZED)) &&
-           usage & PIPE_TRANSFER_WRITE &&
-           !rbuffer->b.is_shared &&
-           !util_ranges_intersect(&rbuffer->valid_buffer_range, box->x, box->x + box->width)) {
-               usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
-       }
-
-       /* If discarding the entire range, discard the whole resource instead. */
-       if (usage & PIPE_TRANSFER_DISCARD_RANGE &&
-           box->x == 0 && box->width == resource->width0) {
-               usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
-       }
-
-       /* If a buffer in VRAM is too large and the range is discarded, don't
-        * map it directly. This makes sure that the buffer stays in VRAM.
-        */
-       bool force_discard_range = false;
-       if (usage & (PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE |
-                    PIPE_TRANSFER_DISCARD_RANGE) &&
-           !(usage & PIPE_TRANSFER_PERSISTENT) &&
-           /* Try not to decrement the counter if it's not positive. Still racy,
-            * but it makes it harder to wrap the counter from INT_MIN to INT_MAX. */
-           rbuffer->max_forced_staging_uploads > 0 &&
-           p_atomic_dec_return(&rbuffer->max_forced_staging_uploads) >= 0) {
-               usage &= ~(PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE |
-                          PIPE_TRANSFER_UNSYNCHRONIZED);
-               usage |= PIPE_TRANSFER_DISCARD_RANGE;
-               force_discard_range = true;
-       }
-
-       if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
-           !(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
-                      TC_TRANSFER_MAP_NO_INVALIDATE))) {
-               assert(usage & PIPE_TRANSFER_WRITE);
-
-               if (si_invalidate_buffer(sctx, rbuffer)) {
-                       /* At this point, the buffer is always idle. */
-                       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
-               } else {
-                       /* Fall back to a temporary buffer. */
-                       usage |= PIPE_TRANSFER_DISCARD_RANGE;
-               }
-       }
-
-       if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
-           ((!(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
-                        PIPE_TRANSFER_PERSISTENT))) ||
-            (rbuffer->flags & RADEON_FLAG_SPARSE))) {
-               assert(usage & PIPE_TRANSFER_WRITE);
-
-               /* Check if mapping this buffer would cause waiting for the GPU.
-                */
-               if (rbuffer->flags & RADEON_FLAG_SPARSE ||
-                   force_discard_range ||
-                   si_rings_is_buffer_referenced(sctx, rbuffer->buf, RADEON_USAGE_READWRITE) ||
-                   !sctx->b.ws->buffer_wait(rbuffer->buf, 0, RADEON_USAGE_READWRITE)) {
-                       /* Do a wait-free write-only transfer using a temporary buffer. */
-                       unsigned offset;
-                       struct r600_resource *staging = NULL;
-
-                       u_upload_alloc(ctx->stream_uploader, 0,
-                                       box->width + (box->x % SI_MAP_BUFFER_ALIGNMENT),
-                                      sctx->screen->info.tcc_cache_line_size,
-                                      &offset, (struct pipe_resource**)&staging,
-                                       (void**)&data);
-
-                       if (staging) {
-                               data += box->x % SI_MAP_BUFFER_ALIGNMENT;
-                               return si_buffer_get_transfer(ctx, resource, usage, box,
-                                                               ptransfer, data, staging, offset);
-                       } else if (rbuffer->flags & RADEON_FLAG_SPARSE) {
-                               return NULL;
-                       }
-               } else {
-                       /* At this point, the buffer is always idle (we checked it above). */
-                       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
-               }
-       }
-       /* Use a staging buffer in cached GTT for reads. */
-       else if (((usage & PIPE_TRANSFER_READ) &&
-                 !(usage & PIPE_TRANSFER_PERSISTENT) &&
-                 (rbuffer->domains & RADEON_DOMAIN_VRAM ||
-                  rbuffer->flags & RADEON_FLAG_GTT_WC)) ||
-                (rbuffer->flags & RADEON_FLAG_SPARSE)) {
-               struct r600_resource *staging;
-
-               assert(!(usage & TC_TRANSFER_MAP_THREADED_UNSYNC));
-               staging = (struct r600_resource*) pipe_buffer_create(
-                               ctx->screen, 0, PIPE_USAGE_STAGING,
-                               box->width + (box->x % SI_MAP_BUFFER_ALIGNMENT));
-               if (staging) {
-                       /* Copy the VRAM buffer to the staging buffer. */
-                       sctx->b.dma_copy(ctx, &staging->b.b, 0,
-                                      box->x % SI_MAP_BUFFER_ALIGNMENT,
-                                      0, 0, resource, 0, box);
-
-                       data = si_buffer_map_sync_with_rings(sctx, staging,
-                                                            usage & ~PIPE_TRANSFER_UNSYNCHRONIZED);
-                       if (!data) {
-                               r600_resource_reference(&staging, NULL);
-                               return NULL;
-                       }
-                       data += box->x % SI_MAP_BUFFER_ALIGNMENT;
-
-                       return si_buffer_get_transfer(ctx, resource, usage, box,
-                                                       ptransfer, data, staging, 0);
-               } else if (rbuffer->flags & RADEON_FLAG_SPARSE) {
-                       return NULL;
-               }
-       }
-
-       data = si_buffer_map_sync_with_rings(sctx, rbuffer, usage);
-       if (!data) {
-               return NULL;
-       }
-       data += box->x;
-
-       return si_buffer_get_transfer(ctx, resource, usage, box,
-                                       ptransfer, data, NULL, 0);
-}
-
-static void si_buffer_do_flush_region(struct pipe_context *ctx,
-                                     struct pipe_transfer *transfer,
-                                     const struct pipe_box *box)
-{
-       struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
-       struct r600_resource *rbuffer = r600_resource(transfer->resource);
-
-       if (rtransfer->staging) {
-               struct pipe_resource *dst, *src;
-               unsigned soffset;
-               struct pipe_box dma_box;
-
-               dst = transfer->resource;
-               src = &rtransfer->staging->b.b;
-               soffset = rtransfer->offset + box->x % SI_MAP_BUFFER_ALIGNMENT;
-
-               u_box_1d(soffset, box->width, &dma_box);
-
-               /* Copy the staging buffer into the original one. */
-               ctx->resource_copy_region(ctx, dst, 0, box->x, 0, 0, src, 0, &dma_box);
-       }
-
-       util_range_add(&rbuffer->valid_buffer_range, box->x,
-                      box->x + box->width);
-}
-
-static void si_buffer_flush_region(struct pipe_context *ctx,
-                                  struct pipe_transfer *transfer,
-                                  const struct pipe_box *rel_box)
-{
-       unsigned required_usage = PIPE_TRANSFER_WRITE |
-                                 PIPE_TRANSFER_FLUSH_EXPLICIT;
-
-       if ((transfer->usage & required_usage) == required_usage) {
-               struct pipe_box box;
-
-               u_box_1d(transfer->box.x + rel_box->x, rel_box->width, &box);
-               si_buffer_do_flush_region(ctx, transfer, &box);
-       }
-}
-
-static void si_buffer_transfer_unmap(struct pipe_context *ctx,
-                                    struct pipe_transfer *transfer)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
-
-       if (transfer->usage & PIPE_TRANSFER_WRITE &&
-           !(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT))
-               si_buffer_do_flush_region(ctx, transfer, &transfer->box);
-
-       r600_resource_reference(&rtransfer->staging, NULL);
-       assert(rtransfer->b.staging == NULL); /* for threaded context only */
-       pipe_resource_reference(&transfer->resource, NULL);
-
-       /* Don't use pool_transfers_unsync. We are always in the driver
-        * thread. */
-       slab_free(&sctx->b.pool_transfers, transfer);
-}
-
-static void si_buffer_subdata(struct pipe_context *ctx,
-                             struct pipe_resource *buffer,
-                             unsigned usage, unsigned offset,
-                             unsigned size, const void *data)
-{
-       struct pipe_transfer *transfer = NULL;
-       struct pipe_box box;
-       uint8_t *map = NULL;
-
-       u_box_1d(offset, size, &box);
-       map = si_buffer_transfer_map(ctx, buffer, 0,
-                                      PIPE_TRANSFER_WRITE |
-                                      PIPE_TRANSFER_DISCARD_RANGE |
-                                      usage,
-                                      &box, &transfer);
-       if (!map)
-               return;
-
-       memcpy(map, data, size);
-       si_buffer_transfer_unmap(ctx, transfer);
-}
-
-static const struct u_resource_vtbl si_buffer_vtbl =
-{
-       NULL,                           /* get_handle */
-       si_buffer_destroy,              /* resource_destroy */
-       si_buffer_transfer_map, /* transfer_map */
-       si_buffer_flush_region, /* transfer_flush_region */
-       si_buffer_transfer_unmap,       /* transfer_unmap */
-};
-
-static struct r600_resource *
-si_alloc_buffer_struct(struct pipe_screen *screen,
-                      const struct pipe_resource *templ)
-{
-       struct r600_resource *rbuffer;
-
-       rbuffer = MALLOC_STRUCT(r600_resource);
-
-       rbuffer->b.b = *templ;
-       rbuffer->b.b.next = NULL;
-       pipe_reference_init(&rbuffer->b.b.reference, 1);
-       rbuffer->b.b.screen = screen;
-
-       rbuffer->b.vtbl = &si_buffer_vtbl;
-       threaded_resource_init(&rbuffer->b.b);
-
-       rbuffer->buf = NULL;
-       rbuffer->bind_history = 0;
-       rbuffer->TC_L2_dirty = false;
-       util_range_init(&rbuffer->valid_buffer_range);
-       return rbuffer;
-}
-
-static struct pipe_resource *si_buffer_create(struct pipe_screen *screen,
-                                             const struct pipe_resource *templ,
-                                             unsigned alignment)
-{
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct r600_resource *rbuffer = si_alloc_buffer_struct(screen, templ);
-
-       if (templ->flags & PIPE_RESOURCE_FLAG_SPARSE)
-               rbuffer->b.b.flags |= SI_RESOURCE_FLAG_UNMAPPABLE;
-
-       si_init_resource_fields(sscreen, rbuffer, templ->width0, alignment);
-
-       if (templ->flags & PIPE_RESOURCE_FLAG_SPARSE)
-               rbuffer->flags |= RADEON_FLAG_SPARSE;
-
-       if (!si_alloc_resource(sscreen, rbuffer)) {
-               FREE(rbuffer);
-               return NULL;
-       }
-       return &rbuffer->b.b;
-}
-
-struct pipe_resource *si_aligned_buffer_create(struct pipe_screen *screen,
-                                              unsigned flags,
-                                              unsigned usage,
-                                              unsigned size,
-                                              unsigned alignment)
-{
-       struct pipe_resource buffer;
-
-       memset(&buffer, 0, sizeof buffer);
-       buffer.target = PIPE_BUFFER;
-       buffer.format = PIPE_FORMAT_R8_UNORM;
-       buffer.bind = 0;
-       buffer.usage = usage;
-       buffer.flags = flags;
-       buffer.width0 = size;
-       buffer.height0 = 1;
-       buffer.depth0 = 1;
-       buffer.array_size = 1;
-       return si_buffer_create(screen, &buffer, alignment);
-}
-
-static struct pipe_resource *
-si_buffer_from_user_memory(struct pipe_screen *screen,
-                          const struct pipe_resource *templ,
-                          void *user_memory)
-{
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct radeon_winsys *ws = sscreen->ws;
-       struct r600_resource *rbuffer = si_alloc_buffer_struct(screen, templ);
-
-       rbuffer->domains = RADEON_DOMAIN_GTT;
-       rbuffer->flags = 0;
-       rbuffer->b.is_user_ptr = true;
-       util_range_add(&rbuffer->valid_buffer_range, 0, templ->width0);
-       util_range_add(&rbuffer->b.valid_buffer_range, 0, templ->width0);
-
-       /* Convert a user pointer to a buffer. */
-       rbuffer->buf = ws->buffer_from_ptr(ws, user_memory, templ->width0);
-       if (!rbuffer->buf) {
-               FREE(rbuffer);
-               return NULL;
-       }
-
-       rbuffer->gpu_address = ws->buffer_get_virtual_address(rbuffer->buf);
-       rbuffer->vram_usage = 0;
-       rbuffer->gart_usage = templ->width0;
-
-       return &rbuffer->b.b;
-}
-
-static struct pipe_resource *si_resource_create(struct pipe_screen *screen,
-                                               const struct pipe_resource *templ)
-{
-       if (templ->target == PIPE_BUFFER) {
-               return si_buffer_create(screen, templ, 256);
-       } else {
-               return si_texture_create(screen, templ);
-       }
-}
-
-static bool si_resource_commit(struct pipe_context *pctx,
-                              struct pipe_resource *resource,
-                              unsigned level, struct pipe_box *box,
-                              bool commit)
-{
-       struct si_context *ctx = (struct si_context *)pctx;
-       struct r600_resource *res = r600_resource(resource);
-
-       /*
-        * Since buffer commitment changes cannot be pipelined, we need to
-        * (a) flush any pending commands that refer to the buffer we're about
-        *     to change, and
-        * (b) wait for threaded submit to finish, including those that were
-        *     triggered by some other, earlier operation.
-        */
-       if (radeon_emitted(ctx->b.gfx_cs, ctx->b.initial_gfx_cs_size) &&
-           ctx->b.ws->cs_is_buffer_referenced(ctx->b.gfx_cs,
-                                              res->buf, RADEON_USAGE_READWRITE)) {
-               si_flush_gfx_cs(ctx, PIPE_FLUSH_ASYNC, NULL);
-       }
-       if (radeon_emitted(ctx->b.dma_cs, 0) &&
-           ctx->b.ws->cs_is_buffer_referenced(ctx->b.dma_cs,
-                                              res->buf, RADEON_USAGE_READWRITE)) {
-               si_flush_dma_cs(ctx, PIPE_FLUSH_ASYNC, NULL);
-       }
-
-       ctx->b.ws->cs_sync_flush(ctx->b.dma_cs);
-       ctx->b.ws->cs_sync_flush(ctx->b.gfx_cs);
-
-       assert(resource->target == PIPE_BUFFER);
-
-       return ctx->b.ws->buffer_commit(res->buf, box->x, box->width, commit);
-}
-
-void si_init_screen_buffer_functions(struct si_screen *sscreen)
-{
-       sscreen->b.resource_create = si_resource_create;
-       sscreen->b.resource_destroy = u_resource_destroy_vtbl;
-       sscreen->b.resource_from_user_memory = si_buffer_from_user_memory;
-}
-
-void si_init_buffer_functions(struct si_context *sctx)
-{
-       sctx->b.b.invalidate_resource = si_invalidate_resource;
-       sctx->b.b.transfer_map = u_transfer_map_vtbl;
-       sctx->b.b.transfer_flush_region = u_transfer_flush_region_vtbl;
-       sctx->b.b.transfer_unmap = u_transfer_unmap_vtbl;
-       sctx->b.b.texture_subdata = u_default_texture_subdata;
-       sctx->b.b.buffer_subdata = si_buffer_subdata;
-       sctx->b.b.resource_commit = si_resource_commit;
-}
index 4e377d45407131b47600510e30d1f85630c7d677..81bf3865ed9f5c28866245a8621b82f42c924ca5 100644 (file)
@@ -23,8 +23,7 @@
  */
 
 /**
- * This file contains common screen and context structures and functions
- * for r600g and radeonsi.
+ * This file is going to be removed.
  */
 
 #ifndef R600_PIPE_COMMON_H
@@ -402,86 +401,9 @@ struct r600_common_context {
                                 uint64_t offset, uint64_t size, unsigned value);
 };
 
-/* r600_buffer_common.c */
-bool si_rings_is_buffer_referenced(struct si_context *sctx,
-                                  struct pb_buffer *buf,
-                                  enum radeon_bo_usage usage);
-void *si_buffer_map_sync_with_rings(struct si_context *sctx,
-                                   struct r600_resource *resource,
-                                   unsigned usage);
-void si_init_resource_fields(struct si_screen *sscreen,
-                            struct r600_resource *res,
-                            uint64_t size, unsigned alignment);
-bool si_alloc_resource(struct si_screen *sscreen,
-                      struct r600_resource *res);
-struct pipe_resource *si_aligned_buffer_create(struct pipe_screen *screen,
-                                              unsigned flags,
-                                              unsigned usage,
-                                              unsigned size,
-                                              unsigned alignment);
-void si_replace_buffer_storage(struct pipe_context *ctx,
-                              struct pipe_resource *dst,
-                              struct pipe_resource *src);
-void si_init_screen_buffer_functions(struct si_screen *sscreen);
-void si_init_buffer_functions(struct si_context *sctx);
-
 /* r600_perfcounters.c */
 void si_perfcounters_destroy(struct si_screen *sscreen);
 
-/* r600_texture.c */
-bool si_prepare_for_dma_blit(struct si_context *sctx,
-                            struct r600_texture *rdst,
-                            unsigned dst_level, unsigned dstx,
-                            unsigned dsty, unsigned dstz,
-                            struct r600_texture *rsrc,
-                            unsigned src_level,
-                            const struct pipe_box *src_box);
-void si_texture_get_fmask_info(struct si_screen *sscreen,
-                              struct r600_texture *rtex,
-                              unsigned nr_samples,
-                              struct r600_fmask_info *out);
-void si_texture_get_cmask_info(struct si_screen *sscreen,
-                              struct r600_texture *rtex,
-                              struct r600_cmask_info *out);
-void si_eliminate_fast_color_clear(struct si_context *sctx,
-                                  struct r600_texture *rtex);
-void si_texture_discard_cmask(struct si_screen *sscreen,
-                             struct r600_texture *rtex);
-bool si_init_flushed_depth_texture(struct pipe_context *ctx,
-                                  struct pipe_resource *texture,
-                                  struct r600_texture **staging);
-void si_print_texture_info(struct si_screen *sscreen,
-                          struct r600_texture *rtex, struct u_log_context *log);
-struct pipe_resource *si_texture_create(struct pipe_screen *screen,
-                                       const struct pipe_resource *templ);
-bool vi_dcc_formats_compatible(enum pipe_format format1,
-                              enum pipe_format format2);
-bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,
-                                    unsigned level,
-                                    enum pipe_format view_format);
-void vi_disable_dcc_if_incompatible_format(struct si_context *sctx,
-                                          struct pipe_resource *tex,
-                                          unsigned level,
-                                          enum pipe_format view_format);
-struct pipe_surface *si_create_surface_custom(struct pipe_context *pipe,
-                                             struct pipe_resource *texture,
-                                             const struct pipe_surface *templ,
-                                             unsigned width0, unsigned height0,
-                                             unsigned width, unsigned height);
-unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap);
-void vi_separate_dcc_try_enable(struct si_context *sctx,
-                               struct r600_texture *tex);
-void vi_separate_dcc_start_query(struct si_context *sctx,
-                                struct r600_texture *tex);
-void vi_separate_dcc_stop_query(struct si_context *sctx,
-                               struct r600_texture *tex);
-void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
-                                            struct r600_texture *tex);
-bool si_texture_disable_dcc(struct si_context *sctx,
-                           struct r600_texture *rtex);
-void si_init_screen_texture_functions(struct si_screen *sscreen);
-void si_init_context_texture_functions(struct si_context *sctx);
-
 
 /* Inline helpers. */
 
diff --git a/src/gallium/drivers/radeon/r600_texture.c b/src/gallium/drivers/radeon/r600_texture.c
deleted file mode 100644 (file)
index 77117ea..0000000
+++ /dev/null
@@ -1,2499 +0,0 @@
-/*
- * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
- * Copyright 2018 Advanced Micro Devices, Inc.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * on the rights to use, copy, modify, merge, publish, distribute, sub
- * license, and/or sell copies of the Software, and to permit persons to whom
- * the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "radeonsi/si_pipe.h"
-#include "radeonsi/si_query.h"
-#include "util/u_format.h"
-#include "util/u_log.h"
-#include "util/u_memory.h"
-#include "util/u_pack_color.h"
-#include "util/u_resource.h"
-#include "util/u_surface.h"
-#include "util/os_time.h"
-#include <errno.h>
-#include <inttypes.h>
-#include "state_tracker/drm_driver.h"
-#include "amd/common/sid.h"
-
-static enum radeon_surf_mode
-si_choose_tiling(struct si_screen *sscreen,
-                const struct pipe_resource *templ);
-
-
-bool si_prepare_for_dma_blit(struct si_context *sctx,
-                            struct r600_texture *rdst,
-                            unsigned dst_level, unsigned dstx,
-                            unsigned dsty, unsigned dstz,
-                            struct r600_texture *rsrc,
-                            unsigned src_level,
-                            const struct pipe_box *src_box)
-{
-       if (!sctx->b.dma_cs)
-               return false;
-
-       if (rdst->surface.bpe != rsrc->surface.bpe)
-               return false;
-
-       /* MSAA: Blits don't exist in the real world. */
-       if (rsrc->resource.b.b.nr_samples > 1 ||
-           rdst->resource.b.b.nr_samples > 1)
-               return false;
-
-       /* Depth-stencil surfaces:
-        *   When dst is linear, the DB->CB copy preserves HTILE.
-        *   When dst is tiled, the 3D path must be used to update HTILE.
-        */
-       if (rsrc->is_depth || rdst->is_depth)
-               return false;
-
-       /* DCC as:
-        *   src: Use the 3D path. DCC decompression is expensive.
-        *   dst: Use the 3D path to compress the pixels with DCC.
-        */
-       if (vi_dcc_enabled(rsrc, src_level) ||
-           vi_dcc_enabled(rdst, dst_level))
-               return false;
-
-       /* CMASK as:
-        *   src: Both texture and SDMA paths need decompression. Use SDMA.
-        *   dst: If overwriting the whole texture, discard CMASK and use
-        *        SDMA. Otherwise, use the 3D path.
-        */
-       if (rdst->cmask.size && rdst->dirty_level_mask & (1 << dst_level)) {
-               /* The CMASK clear is only enabled for the first level. */
-               assert(dst_level == 0);
-               if (!util_texrange_covers_whole_level(&rdst->resource.b.b, dst_level,
-                                                     dstx, dsty, dstz, src_box->width,
-                                                     src_box->height, src_box->depth))
-                       return false;
-
-               si_texture_discard_cmask(sctx->screen, rdst);
-       }
-
-       /* All requirements are met. Prepare textures for SDMA. */
-       if (rsrc->cmask.size && rsrc->dirty_level_mask & (1 << src_level))
-               sctx->b.b.flush_resource(&sctx->b.b, &rsrc->resource.b.b);
-
-       assert(!(rsrc->dirty_level_mask & (1 << src_level)));
-       assert(!(rdst->dirty_level_mask & (1 << dst_level)));
-
-       return true;
-}
-
-/* Same as resource_copy_region, except that both upsampling and downsampling are allowed. */
-static void si_copy_region_with_blit(struct pipe_context *pipe,
-                                    struct pipe_resource *dst,
-                                    unsigned dst_level,
-                                    unsigned dstx, unsigned dsty, unsigned dstz,
-                                    struct pipe_resource *src,
-                                    unsigned src_level,
-                                    const struct pipe_box *src_box)
-{
-       struct pipe_blit_info blit;
-
-       memset(&blit, 0, sizeof(blit));
-       blit.src.resource = src;
-       blit.src.format = src->format;
-       blit.src.level = src_level;
-       blit.src.box = *src_box;
-       blit.dst.resource = dst;
-       blit.dst.format = dst->format;
-       blit.dst.level = dst_level;
-       blit.dst.box.x = dstx;
-       blit.dst.box.y = dsty;
-       blit.dst.box.z = dstz;
-       blit.dst.box.width = src_box->width;
-       blit.dst.box.height = src_box->height;
-       blit.dst.box.depth = src_box->depth;
-       blit.mask = util_format_get_mask(src->format) &
-                   util_format_get_mask(dst->format);
-       blit.filter = PIPE_TEX_FILTER_NEAREST;
-
-       if (blit.mask) {
-               pipe->blit(pipe, &blit);
-       }
-}
-
-/* Copy from a full GPU texture to a transfer's staging one. */
-static void si_copy_to_staging_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
-       struct pipe_resource *dst = &rtransfer->staging->b.b;
-       struct pipe_resource *src = transfer->resource;
-
-       if (src->nr_samples > 1) {
-               si_copy_region_with_blit(ctx, dst, 0, 0, 0, 0,
-                                          src, transfer->level, &transfer->box);
-               return;
-       }
-
-       sctx->b.dma_copy(ctx, dst, 0, 0, 0, 0, src, transfer->level,
-                      &transfer->box);
-}
-
-/* Copy from a transfer's staging texture to a full GPU one. */
-static void si_copy_from_staging_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
-       struct pipe_resource *dst = transfer->resource;
-       struct pipe_resource *src = &rtransfer->staging->b.b;
-       struct pipe_box sbox;
-
-       u_box_3d(0, 0, 0, transfer->box.width, transfer->box.height, transfer->box.depth, &sbox);
-
-       if (dst->nr_samples > 1) {
-               si_copy_region_with_blit(ctx, dst, transfer->level,
-                                          transfer->box.x, transfer->box.y, transfer->box.z,
-                                          src, 0, &sbox);
-               return;
-       }
-
-       sctx->b.dma_copy(ctx, dst, transfer->level,
-                      transfer->box.x, transfer->box.y, transfer->box.z,
-                      src, 0, &sbox);
-}
-
-static unsigned si_texture_get_offset(struct si_screen *sscreen,
-                                     struct r600_texture *rtex, unsigned level,
-                                     const struct pipe_box *box,
-                                     unsigned *stride,
-                                     unsigned *layer_stride)
-{
-       if (sscreen->info.chip_class >= GFX9) {
-               *stride = rtex->surface.u.gfx9.surf_pitch * rtex->surface.bpe;
-               *layer_stride = rtex->surface.u.gfx9.surf_slice_size;
-
-               if (!box)
-                       return 0;
-
-               /* Each texture is an array of slices. Each slice is an array
-                * of mipmap levels. */
-               return box->z * rtex->surface.u.gfx9.surf_slice_size +
-                      rtex->surface.u.gfx9.offset[level] +
-                      (box->y / rtex->surface.blk_h *
-                       rtex->surface.u.gfx9.surf_pitch +
-                       box->x / rtex->surface.blk_w) * rtex->surface.bpe;
-       } else {
-               *stride = rtex->surface.u.legacy.level[level].nblk_x *
-                         rtex->surface.bpe;
-               assert((uint64_t)rtex->surface.u.legacy.level[level].slice_size_dw * 4 <= UINT_MAX);
-               *layer_stride = (uint64_t)rtex->surface.u.legacy.level[level].slice_size_dw * 4;
-
-               if (!box)
-                       return rtex->surface.u.legacy.level[level].offset;
-
-               /* Each texture is an array of mipmap levels. Each level is
-                * an array of slices. */
-               return rtex->surface.u.legacy.level[level].offset +
-                      box->z * (uint64_t)rtex->surface.u.legacy.level[level].slice_size_dw * 4 +
-                      (box->y / rtex->surface.blk_h *
-                       rtex->surface.u.legacy.level[level].nblk_x +
-                       box->x / rtex->surface.blk_w) * rtex->surface.bpe;
-       }
-}
-
-static int si_init_surface(struct si_screen *sscreen,
-                          struct radeon_surf *surface,
-                          const struct pipe_resource *ptex,
-                          enum radeon_surf_mode array_mode,
-                          unsigned pitch_in_bytes_override,
-                          unsigned offset,
-                          bool is_imported,
-                          bool is_scanout,
-                          bool is_flushed_depth,
-                          bool tc_compatible_htile)
-{
-       const struct util_format_description *desc =
-               util_format_description(ptex->format);
-       bool is_depth, is_stencil;
-       int r;
-       unsigned i, bpe, flags = 0;
-
-       is_depth = util_format_has_depth(desc);
-       is_stencil = util_format_has_stencil(desc);
-
-       if (!is_flushed_depth &&
-           ptex->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
-               bpe = 4; /* stencil is allocated separately on evergreen */
-       } else {
-               bpe = util_format_get_blocksize(ptex->format);
-               assert(util_is_power_of_two_or_zero(bpe));
-       }
-
-       if (!is_flushed_depth && is_depth) {
-               flags |= RADEON_SURF_ZBUFFER;
-
-               if (tc_compatible_htile &&
-                   (sscreen->info.chip_class >= GFX9 ||
-                    array_mode == RADEON_SURF_MODE_2D)) {
-                       /* TC-compatible HTILE only supports Z32_FLOAT.
-                        * GFX9 also supports Z16_UNORM.
-                        * On VI, promote Z16 to Z32. DB->CB copies will convert
-                        * the format for transfers.
-                        */
-                       if (sscreen->info.chip_class == VI)
-                               bpe = 4;
-
-                       flags |= RADEON_SURF_TC_COMPATIBLE_HTILE;
-               }
-
-               if (is_stencil)
-                       flags |= RADEON_SURF_SBUFFER;
-       }
-
-       if (sscreen->info.chip_class >= VI &&
-           (ptex->flags & SI_RESOURCE_FLAG_DISABLE_DCC ||
-            ptex->format == PIPE_FORMAT_R9G9B9E5_FLOAT ||
-            /* DCC MSAA array textures are disallowed due to incomplete clear impl. */
-            (ptex->nr_samples >= 2 &&
-             (!sscreen->dcc_msaa_allowed || ptex->array_size > 1))))
-               flags |= RADEON_SURF_DISABLE_DCC;
-
-       if (ptex->bind & PIPE_BIND_SCANOUT || is_scanout) {
-               /* This should catch bugs in gallium users setting incorrect flags. */
-               assert(ptex->nr_samples <= 1 &&
-                      ptex->array_size == 1 &&
-                      ptex->depth0 == 1 &&
-                      ptex->last_level == 0 &&
-                      !(flags & RADEON_SURF_Z_OR_SBUFFER));
-
-               flags |= RADEON_SURF_SCANOUT;
-       }
-
-       if (ptex->bind & PIPE_BIND_SHARED)
-               flags |= RADEON_SURF_SHAREABLE;
-       if (is_imported)
-               flags |= RADEON_SURF_IMPORTED | RADEON_SURF_SHAREABLE;
-       if (!(ptex->flags & SI_RESOURCE_FLAG_FORCE_TILING))
-               flags |= RADEON_SURF_OPTIMIZE_FOR_SPACE;
-
-       r = sscreen->ws->surface_init(sscreen->ws, ptex, flags, bpe,
-                                     array_mode, surface);
-       if (r) {
-               return r;
-       }
-
-       unsigned pitch = pitch_in_bytes_override / bpe;
-
-       if (sscreen->info.chip_class >= GFX9) {
-               if (pitch) {
-                       surface->u.gfx9.surf_pitch = pitch;
-                       surface->u.gfx9.surf_slice_size =
-                               (uint64_t)pitch * surface->u.gfx9.surf_height * bpe;
-               }
-               surface->u.gfx9.surf_offset = offset;
-       } else {
-               if (pitch) {
-                       surface->u.legacy.level[0].nblk_x = pitch;
-                       surface->u.legacy.level[0].slice_size_dw =
-                               ((uint64_t)pitch * surface->u.legacy.level[0].nblk_y * bpe) / 4;
-               }
-               if (offset) {
-                       for (i = 0; i < ARRAY_SIZE(surface->u.legacy.level); ++i)
-                               surface->u.legacy.level[i].offset += offset;
-               }
-       }
-       return 0;
-}
-
-static void si_texture_init_metadata(struct si_screen *sscreen,
-                                    struct r600_texture *rtex,
-                                    struct radeon_bo_metadata *metadata)
-{
-       struct radeon_surf *surface = &rtex->surface;
-
-       memset(metadata, 0, sizeof(*metadata));
-
-       if (sscreen->info.chip_class >= GFX9) {
-               metadata->u.gfx9.swizzle_mode = surface->u.gfx9.surf.swizzle_mode;
-       } else {
-               metadata->u.legacy.microtile = surface->u.legacy.level[0].mode >= RADEON_SURF_MODE_1D ?
-                                          RADEON_LAYOUT_TILED : RADEON_LAYOUT_LINEAR;
-               metadata->u.legacy.macrotile = surface->u.legacy.level[0].mode >= RADEON_SURF_MODE_2D ?
-                                          RADEON_LAYOUT_TILED : RADEON_LAYOUT_LINEAR;
-               metadata->u.legacy.pipe_config = surface->u.legacy.pipe_config;
-               metadata->u.legacy.bankw = surface->u.legacy.bankw;
-               metadata->u.legacy.bankh = surface->u.legacy.bankh;
-               metadata->u.legacy.tile_split = surface->u.legacy.tile_split;
-               metadata->u.legacy.mtilea = surface->u.legacy.mtilea;
-               metadata->u.legacy.num_banks = surface->u.legacy.num_banks;
-               metadata->u.legacy.stride = surface->u.legacy.level[0].nblk_x * surface->bpe;
-               metadata->u.legacy.scanout = (surface->flags & RADEON_SURF_SCANOUT) != 0;
-       }
-}
-
-static void si_surface_import_metadata(struct si_screen *sscreen,
-                                      struct radeon_surf *surf,
-                                      struct radeon_bo_metadata *metadata,
-                                      enum radeon_surf_mode *array_mode,
-                                      bool *is_scanout)
-{
-       if (sscreen->info.chip_class >= GFX9) {
-               if (metadata->u.gfx9.swizzle_mode > 0)
-                       *array_mode = RADEON_SURF_MODE_2D;
-               else
-                       *array_mode = RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               *is_scanout = metadata->u.gfx9.swizzle_mode == 0 ||
-                             metadata->u.gfx9.swizzle_mode % 4 == 2;
-
-               surf->u.gfx9.surf.swizzle_mode = metadata->u.gfx9.swizzle_mode;
-       } else {
-               surf->u.legacy.pipe_config = metadata->u.legacy.pipe_config;
-               surf->u.legacy.bankw = metadata->u.legacy.bankw;
-               surf->u.legacy.bankh = metadata->u.legacy.bankh;
-               surf->u.legacy.tile_split = metadata->u.legacy.tile_split;
-               surf->u.legacy.mtilea = metadata->u.legacy.mtilea;
-               surf->u.legacy.num_banks = metadata->u.legacy.num_banks;
-
-               if (metadata->u.legacy.macrotile == RADEON_LAYOUT_TILED)
-                       *array_mode = RADEON_SURF_MODE_2D;
-               else if (metadata->u.legacy.microtile == RADEON_LAYOUT_TILED)
-                       *array_mode = RADEON_SURF_MODE_1D;
-               else
-                       *array_mode = RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               *is_scanout = metadata->u.legacy.scanout;
-       }
-}
-
-void si_eliminate_fast_color_clear(struct si_context *sctx,
-                                  struct r600_texture *rtex)
-{
-       struct si_screen *sscreen = sctx->screen;
-       struct pipe_context *ctx = &sctx->b.b;
-
-       if (ctx == sscreen->aux_context)
-               mtx_lock(&sscreen->aux_context_lock);
-
-       unsigned n = sctx->b.num_decompress_calls;
-       ctx->flush_resource(ctx, &rtex->resource.b.b);
-
-       /* Flush only if any fast clear elimination took place. */
-       if (n != sctx->b.num_decompress_calls)
-               ctx->flush(ctx, NULL, 0);
-
-       if (ctx == sscreen->aux_context)
-               mtx_unlock(&sscreen->aux_context_lock);
-}
-
-void si_texture_discard_cmask(struct si_screen *sscreen,
-                             struct r600_texture *rtex)
-{
-       if (!rtex->cmask.size)
-               return;
-
-       assert(rtex->resource.b.b.nr_samples <= 1);
-
-       /* Disable CMASK. */
-       memset(&rtex->cmask, 0, sizeof(rtex->cmask));
-       rtex->cmask.base_address_reg = rtex->resource.gpu_address >> 8;
-       rtex->dirty_level_mask = 0;
-
-       rtex->cb_color_info &= ~S_028C70_FAST_CLEAR(1);
-
-       if (rtex->cmask_buffer != &rtex->resource)
-           r600_resource_reference(&rtex->cmask_buffer, NULL);
-
-       /* Notify all contexts about the change. */
-       p_atomic_inc(&sscreen->dirty_tex_counter);
-       p_atomic_inc(&sscreen->compressed_colortex_counter);
-}
-
-static bool si_can_disable_dcc(struct r600_texture *rtex)
-{
-       /* We can't disable DCC if it can be written by another process. */
-       return rtex->dcc_offset &&
-              (!rtex->resource.b.is_shared ||
-               !(rtex->resource.external_usage & PIPE_HANDLE_USAGE_WRITE));
-}
-
-static bool si_texture_discard_dcc(struct si_screen *sscreen,
-                                  struct r600_texture *rtex)
-{
-       if (!si_can_disable_dcc(rtex))
-               return false;
-
-       assert(rtex->dcc_separate_buffer == NULL);
-
-       /* Disable DCC. */
-       rtex->dcc_offset = 0;
-
-       /* Notify all contexts about the change. */
-       p_atomic_inc(&sscreen->dirty_tex_counter);
-       return true;
-}
-
-/**
- * Disable DCC for the texture. (first decompress, then discard metadata).
- *
- * There is unresolved multi-context synchronization issue between
- * screen::aux_context and the current context. If applications do this with
- * multiple contexts, it's already undefined behavior for them and we don't
- * have to worry about that. The scenario is:
- *
- * If context 1 disables DCC and context 2 has queued commands that write
- * to the texture via CB with DCC enabled, and the order of operations is
- * as follows:
- *   context 2 queues draw calls rendering to the texture, but doesn't flush
- *   context 1 disables DCC and flushes
- *   context 1 & 2 reset descriptors and FB state
- *   context 2 flushes (new compressed tiles written by the draw calls)
- *   context 1 & 2 read garbage, because DCC is disabled, yet there are
- *   compressed tiled
- *
- * \param sctx  the current context if you have one, or rscreen->aux_context
- *              if you don't.
- */
-bool si_texture_disable_dcc(struct si_context *sctx,
-                           struct r600_texture *rtex)
-{
-       struct si_screen *sscreen = sctx->screen;
-
-       if (!si_can_disable_dcc(rtex))
-               return false;
-
-       if (&sctx->b.b == sscreen->aux_context)
-               mtx_lock(&sscreen->aux_context_lock);
-
-       /* Decompress DCC. */
-       si_decompress_dcc(sctx, rtex);
-       sctx->b.b.flush(&sctx->b.b, NULL, 0);
-
-       if (&sctx->b.b == sscreen->aux_context)
-               mtx_unlock(&sscreen->aux_context_lock);
-
-       return si_texture_discard_dcc(sscreen, rtex);
-}
-
-static void si_reallocate_texture_inplace(struct si_context *sctx,
-                                         struct r600_texture *rtex,
-                                         unsigned new_bind_flag,
-                                         bool invalidate_storage)
-{
-       struct pipe_screen *screen = sctx->b.b.screen;
-       struct r600_texture *new_tex;
-       struct pipe_resource templ = rtex->resource.b.b;
-       unsigned i;
-
-       templ.bind |= new_bind_flag;
-
-       if (rtex->resource.b.is_shared)
-               return;
-
-       if (new_bind_flag == PIPE_BIND_LINEAR) {
-               if (rtex->surface.is_linear)
-                       return;
-
-               /* This fails with MSAA, depth, and compressed textures. */
-               if (si_choose_tiling(sctx->screen, &templ) !=
-                   RADEON_SURF_MODE_LINEAR_ALIGNED)
-                       return;
-       }
-
-       new_tex = (struct r600_texture*)screen->resource_create(screen, &templ);
-       if (!new_tex)
-               return;
-
-       /* Copy the pixels to the new texture. */
-       if (!invalidate_storage) {
-               for (i = 0; i <= templ.last_level; i++) {
-                       struct pipe_box box;
-
-                       u_box_3d(0, 0, 0,
-                                u_minify(templ.width0, i), u_minify(templ.height0, i),
-                                util_num_layers(&templ, i), &box);
-
-                       sctx->b.dma_copy(&sctx->b.b, &new_tex->resource.b.b, i, 0, 0, 0,
-                                      &rtex->resource.b.b, i, &box);
-               }
-       }
-
-       if (new_bind_flag == PIPE_BIND_LINEAR) {
-               si_texture_discard_cmask(sctx->screen, rtex);
-               si_texture_discard_dcc(sctx->screen, rtex);
-       }
-
-       /* Replace the structure fields of rtex. */
-       rtex->resource.b.b.bind = templ.bind;
-       pb_reference(&rtex->resource.buf, new_tex->resource.buf);
-       rtex->resource.gpu_address = new_tex->resource.gpu_address;
-       rtex->resource.vram_usage = new_tex->resource.vram_usage;
-       rtex->resource.gart_usage = new_tex->resource.gart_usage;
-       rtex->resource.bo_size = new_tex->resource.bo_size;
-       rtex->resource.bo_alignment = new_tex->resource.bo_alignment;
-       rtex->resource.domains = new_tex->resource.domains;
-       rtex->resource.flags = new_tex->resource.flags;
-       rtex->size = new_tex->size;
-       rtex->db_render_format = new_tex->db_render_format;
-       rtex->db_compatible = new_tex->db_compatible;
-       rtex->can_sample_z = new_tex->can_sample_z;
-       rtex->can_sample_s = new_tex->can_sample_s;
-       rtex->surface = new_tex->surface;
-       rtex->fmask = new_tex->fmask;
-       rtex->cmask = new_tex->cmask;
-       rtex->cb_color_info = new_tex->cb_color_info;
-       rtex->last_msaa_resolve_target_micro_mode = new_tex->last_msaa_resolve_target_micro_mode;
-       rtex->htile_offset = new_tex->htile_offset;
-       rtex->tc_compatible_htile = new_tex->tc_compatible_htile;
-       rtex->depth_cleared = new_tex->depth_cleared;
-       rtex->stencil_cleared = new_tex->stencil_cleared;
-       rtex->dcc_gather_statistics = new_tex->dcc_gather_statistics;
-       rtex->framebuffers_bound = new_tex->framebuffers_bound;
-
-       if (new_bind_flag == PIPE_BIND_LINEAR) {
-               assert(!rtex->htile_offset);
-               assert(!rtex->cmask.size);
-               assert(!rtex->fmask.size);
-               assert(!rtex->dcc_offset);
-               assert(!rtex->is_depth);
-       }
-
-       r600_texture_reference(&new_tex, NULL);
-
-       p_atomic_inc(&sctx->screen->dirty_tex_counter);
-}
-
-static uint32_t si_get_bo_metadata_word1(struct si_screen *sscreen)
-{
-       return (ATI_VENDOR_ID << 16) | sscreen->info.pci_id;
-}
-
-static void si_query_opaque_metadata(struct si_screen *sscreen,
-                                    struct r600_texture *rtex,
-                                    struct radeon_bo_metadata *md)
-{
-       struct pipe_resource *res = &rtex->resource.b.b;
-       static const unsigned char swizzle[] = {
-               PIPE_SWIZZLE_X,
-               PIPE_SWIZZLE_Y,
-               PIPE_SWIZZLE_Z,
-               PIPE_SWIZZLE_W
-       };
-       uint32_t desc[8], i;
-       bool is_array = util_texture_is_array(res->target);
-
-       /* DRM 2.x.x doesn't support this. */
-       if (sscreen->info.drm_major != 3)
-               return;
-
-       assert(rtex->dcc_separate_buffer == NULL);
-       assert(rtex->fmask.size == 0);
-
-       /* Metadata image format format version 1:
-        * [0] = 1 (metadata format identifier)
-        * [1] = (VENDOR_ID << 16) | PCI_ID
-        * [2:9] = image descriptor for the whole resource
-        *         [2] is always 0, because the base address is cleared
-        *         [9] is the DCC offset bits [39:8] from the beginning of
-        *             the buffer
-        * [10:10+LAST_LEVEL] = mipmap level offset bits [39:8] for each level
-        */
-
-       md->metadata[0] = 1; /* metadata image format version 1 */
-
-       /* TILE_MODE_INDEX is ambiguous without a PCI ID. */
-       md->metadata[1] = si_get_bo_metadata_word1(sscreen);
-
-       si_make_texture_descriptor(sscreen, rtex, true,
-                                  res->target, res->format,
-                                  swizzle, 0, res->last_level, 0,
-                                  is_array ? res->array_size - 1 : 0,
-                                  res->width0, res->height0, res->depth0,
-                                  desc, NULL);
-
-       si_set_mutable_tex_desc_fields(sscreen, rtex, &rtex->surface.u.legacy.level[0],
-                                      0, 0, rtex->surface.blk_w, false, desc);
-
-       /* Clear the base address and set the relative DCC offset. */
-       desc[0] = 0;
-       desc[1] &= C_008F14_BASE_ADDRESS_HI;
-       desc[7] = rtex->dcc_offset >> 8;
-
-       /* Dwords [2:9] contain the image descriptor. */
-       memcpy(&md->metadata[2], desc, sizeof(desc));
-       md->size_metadata = 10 * 4;
-
-       /* Dwords [10:..] contain the mipmap level offsets. */
-       if (sscreen->info.chip_class <= VI) {
-               for (i = 0; i <= res->last_level; i++)
-                       md->metadata[10+i] = rtex->surface.u.legacy.level[i].offset >> 8;
-
-               md->size_metadata += (1 + res->last_level) * 4;
-       }
-}
-
-static void si_apply_opaque_metadata(struct si_screen *sscreen,
-                                    struct r600_texture *rtex,
-                                    struct radeon_bo_metadata *md)
-{
-       uint32_t *desc = &md->metadata[2];
-
-       if (sscreen->info.chip_class < VI)
-               return;
-
-       /* Return if DCC is enabled. The texture should be set up with it
-        * already.
-        */
-       if (md->size_metadata >= 10 * 4 && /* at least 2(header) + 8(desc) dwords */
-           md->metadata[0] != 0 &&
-           md->metadata[1] == si_get_bo_metadata_word1(sscreen) &&
-           G_008F28_COMPRESSION_EN(desc[6])) {
-               rtex->dcc_offset = (uint64_t)desc[7] << 8;
-               return;
-       }
-
-       /* Disable DCC. These are always set by texture_from_handle and must
-        * be cleared here.
-        */
-       rtex->dcc_offset = 0;
-}
-
-static boolean si_texture_get_handle(struct pipe_screen* screen,
-                                    struct pipe_context *ctx,
-                                    struct pipe_resource *resource,
-                                    struct winsys_handle *whandle,
-                                    unsigned usage)
-{
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct si_context *sctx;
-       struct r600_resource *res = (struct r600_resource*)resource;
-       struct r600_texture *rtex = (struct r600_texture*)resource;
-       struct radeon_bo_metadata metadata;
-       bool update_metadata = false;
-       unsigned stride, offset, slice_size;
-       bool flush = false;
-
-       ctx = threaded_context_unwrap_sync(ctx);
-       sctx = (struct si_context*)(ctx ? ctx : sscreen->aux_context);
-
-       if (resource->target != PIPE_BUFFER) {
-               /* This is not supported now, but it might be required for OpenCL
-                * interop in the future.
-                */
-               if (resource->nr_samples > 1 || rtex->is_depth)
-                       return false;
-
-               /* Move a suballocated texture into a non-suballocated allocation. */
-               if (sscreen->ws->buffer_is_suballocated(res->buf) ||
-                   rtex->surface.tile_swizzle ||
-                   (rtex->resource.flags & RADEON_FLAG_NO_INTERPROCESS_SHARING &&
-                    sscreen->info.has_local_buffers &&
-                    whandle->type != DRM_API_HANDLE_TYPE_KMS)) {
-                       assert(!res->b.is_shared);
-                       si_reallocate_texture_inplace(sctx, rtex,
-                                                       PIPE_BIND_SHARED, false);
-                       flush = true;
-                       assert(res->b.b.bind & PIPE_BIND_SHARED);
-                       assert(res->flags & RADEON_FLAG_NO_SUBALLOC);
-                       assert(!(res->flags & RADEON_FLAG_NO_INTERPROCESS_SHARING));
-                       assert(rtex->surface.tile_swizzle == 0);
-               }
-
-               /* Since shader image stores don't support DCC on VI,
-                * disable it for external clients that want write
-                * access.
-                */
-               if (usage & PIPE_HANDLE_USAGE_WRITE && rtex->dcc_offset) {
-                       if (si_texture_disable_dcc(sctx, rtex)) {
-                               update_metadata = true;
-                               /* si_texture_disable_dcc flushes the context */
-                               flush = false;
-                       }
-               }
-
-               if (!(usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH) &&
-                   (rtex->cmask.size || rtex->dcc_offset)) {
-                       /* Eliminate fast clear (both CMASK and DCC) */
-                       si_eliminate_fast_color_clear(sctx, rtex);
-                       /* eliminate_fast_color_clear flushes the context */
-                       flush = false;
-
-                       /* Disable CMASK if flush_resource isn't going
-                        * to be called.
-                        */
-                       if (rtex->cmask.size)
-                               si_texture_discard_cmask(sscreen, rtex);
-               }
-
-               /* Set metadata. */
-               if (!res->b.is_shared || update_metadata) {
-                       si_texture_init_metadata(sscreen, rtex, &metadata);
-                       si_query_opaque_metadata(sscreen, rtex, &metadata);
-
-                       sscreen->ws->buffer_set_metadata(res->buf, &metadata);
-               }
-
-               if (sscreen->info.chip_class >= GFX9) {
-                       offset = rtex->surface.u.gfx9.surf_offset;
-                       stride = rtex->surface.u.gfx9.surf_pitch *
-                                rtex->surface.bpe;
-                       slice_size = rtex->surface.u.gfx9.surf_slice_size;
-               } else {
-                       offset = rtex->surface.u.legacy.level[0].offset;
-                       stride = rtex->surface.u.legacy.level[0].nblk_x *
-                                rtex->surface.bpe;
-                       slice_size = (uint64_t)rtex->surface.u.legacy.level[0].slice_size_dw * 4;
-               }
-       } else {
-               /* Buffer exports are for the OpenCL interop. */
-               /* Move a suballocated buffer into a non-suballocated allocation. */
-               if (sscreen->ws->buffer_is_suballocated(res->buf) ||
-                   /* A DMABUF export always fails if the BO is local. */
-                   (rtex->resource.flags & RADEON_FLAG_NO_INTERPROCESS_SHARING &&
-                    sscreen->info.has_local_buffers)) {
-                       assert(!res->b.is_shared);
-
-                       /* Allocate a new buffer with PIPE_BIND_SHARED. */
-                       struct pipe_resource templ = res->b.b;
-                       templ.bind |= PIPE_BIND_SHARED;
-
-                       struct pipe_resource *newb =
-                               screen->resource_create(screen, &templ);
-                       if (!newb)
-                               return false;
-
-                       /* Copy the old buffer contents to the new one. */
-                       struct pipe_box box;
-                       u_box_1d(0, newb->width0, &box);
-                       sctx->b.b.resource_copy_region(&sctx->b.b, newb, 0, 0, 0, 0,
-                                                    &res->b.b, 0, &box);
-                       flush = true;
-                       /* Move the new buffer storage to the old pipe_resource. */
-                       si_replace_buffer_storage(&sctx->b.b, &res->b.b, newb);
-                       pipe_resource_reference(&newb, NULL);
-
-                       assert(res->b.b.bind & PIPE_BIND_SHARED);
-                       assert(res->flags & RADEON_FLAG_NO_SUBALLOC);
-               }
-
-               /* Buffers */
-               offset = 0;
-               stride = 0;
-               slice_size = 0;
-       }
-
-       if (flush)
-               sctx->b.b.flush(&sctx->b.b, NULL, 0);
-
-       if (res->b.is_shared) {
-               /* USAGE_EXPLICIT_FLUSH must be cleared if at least one user
-                * doesn't set it.
-                */
-               res->external_usage |= usage & ~PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
-               if (!(usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH))
-                       res->external_usage &= ~PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
-       } else {
-               res->b.is_shared = true;
-               res->external_usage = usage;
-       }
-
-       return sscreen->ws->buffer_get_handle(res->buf, stride, offset,
-                                             slice_size, whandle);
-}
-
-static void si_texture_destroy(struct pipe_screen *screen,
-                              struct pipe_resource *ptex)
-{
-       struct r600_texture *rtex = (struct r600_texture*)ptex;
-       struct r600_resource *resource = &rtex->resource;
-
-       r600_texture_reference(&rtex->flushed_depth_texture, NULL);
-
-       if (rtex->cmask_buffer != &rtex->resource) {
-           r600_resource_reference(&rtex->cmask_buffer, NULL);
-       }
-       pb_reference(&resource->buf, NULL);
-       r600_resource_reference(&rtex->dcc_separate_buffer, NULL);
-       r600_resource_reference(&rtex->last_dcc_separate_buffer, NULL);
-       FREE(rtex);
-}
-
-static const struct u_resource_vtbl si_texture_vtbl;
-
-/* The number of samples can be specified independently of the texture. */
-void si_texture_get_fmask_info(struct si_screen *sscreen,
-                              struct r600_texture *rtex,
-                              unsigned nr_samples,
-                              struct r600_fmask_info *out)
-{
-       /* FMASK is allocated like an ordinary texture. */
-       struct pipe_resource templ = rtex->resource.b.b;
-       struct radeon_surf fmask = {};
-       unsigned flags, bpe;
-
-       memset(out, 0, sizeof(*out));
-
-       if (sscreen->info.chip_class >= GFX9) {
-               out->alignment = rtex->surface.u.gfx9.fmask_alignment;
-               out->size = rtex->surface.u.gfx9.fmask_size;
-               out->tile_swizzle = rtex->surface.u.gfx9.fmask_tile_swizzle;
-               return;
-       }
-
-       templ.nr_samples = 1;
-       flags = rtex->surface.flags | RADEON_SURF_FMASK;
-
-       switch (nr_samples) {
-       case 2:
-       case 4:
-               bpe = 1;
-               break;
-       case 8:
-               bpe = 4;
-               break;
-       default:
-               PRINT_ERR("Invalid sample count for FMASK allocation.\n");
-               return;
-       }
-
-       if (sscreen->ws->surface_init(sscreen->ws, &templ, flags, bpe,
-                                     RADEON_SURF_MODE_2D, &fmask)) {
-               PRINT_ERR("Got error in surface_init while allocating FMASK.\n");
-               return;
-       }
-
-       assert(fmask.u.legacy.level[0].mode == RADEON_SURF_MODE_2D);
-
-       out->slice_tile_max = (fmask.u.legacy.level[0].nblk_x * fmask.u.legacy.level[0].nblk_y) / 64;
-       if (out->slice_tile_max)
-               out->slice_tile_max -= 1;
-
-       out->tile_mode_index = fmask.u.legacy.tiling_index[0];
-       out->pitch_in_pixels = fmask.u.legacy.level[0].nblk_x;
-       out->bank_height = fmask.u.legacy.bankh;
-       out->tile_swizzle = fmask.tile_swizzle;
-       out->alignment = MAX2(256, fmask.surf_alignment);
-       out->size = fmask.surf_size;
-}
-
-static void si_texture_allocate_fmask(struct si_screen *sscreen,
-                                     struct r600_texture *rtex)
-{
-       si_texture_get_fmask_info(sscreen, rtex,
-                                   rtex->resource.b.b.nr_samples, &rtex->fmask);
-
-       rtex->fmask.offset = align64(rtex->size, rtex->fmask.alignment);
-       rtex->size = rtex->fmask.offset + rtex->fmask.size;
-}
-
-void si_texture_get_cmask_info(struct si_screen *sscreen,
-                              struct r600_texture *rtex,
-                              struct r600_cmask_info *out)
-{
-       unsigned pipe_interleave_bytes = sscreen->info.pipe_interleave_bytes;
-       unsigned num_pipes = sscreen->info.num_tile_pipes;
-       unsigned cl_width, cl_height;
-
-       if (sscreen->info.chip_class >= GFX9) {
-               out->alignment = rtex->surface.u.gfx9.cmask_alignment;
-               out->size = rtex->surface.u.gfx9.cmask_size;
-               return;
-       }
-
-       switch (num_pipes) {
-       case 2:
-               cl_width = 32;
-               cl_height = 16;
-               break;
-       case 4:
-               cl_width = 32;
-               cl_height = 32;
-               break;
-       case 8:
-               cl_width = 64;
-               cl_height = 32;
-               break;
-       case 16: /* Hawaii */
-               cl_width = 64;
-               cl_height = 64;
-               break;
-       default:
-               assert(0);
-               return;
-       }
-
-       unsigned base_align = num_pipes * pipe_interleave_bytes;
-
-       unsigned width = align(rtex->resource.b.b.width0, cl_width*8);
-       unsigned height = align(rtex->resource.b.b.height0, cl_height*8);
-       unsigned slice_elements = (width * height) / (8*8);
-
-       /* Each element of CMASK is a nibble. */
-       unsigned slice_bytes = slice_elements / 2;
-
-       out->slice_tile_max = (width * height) / (128*128);
-       if (out->slice_tile_max)
-               out->slice_tile_max -= 1;
-
-       out->alignment = MAX2(256, base_align);
-       out->size = util_num_layers(&rtex->resource.b.b, 0) *
-                   align(slice_bytes, base_align);
-}
-
-static void si_texture_allocate_cmask(struct si_screen *sscreen,
-                                     struct r600_texture *rtex)
-{
-       si_texture_get_cmask_info(sscreen, rtex, &rtex->cmask);
-
-       rtex->cmask.offset = align64(rtex->size, rtex->cmask.alignment);
-       rtex->size = rtex->cmask.offset + rtex->cmask.size;
-
-       rtex->cb_color_info |= S_028C70_FAST_CLEAR(1);
-}
-
-static void si_texture_get_htile_size(struct si_screen *sscreen,
-                                     struct r600_texture *rtex)
-{
-       unsigned cl_width, cl_height, width, height;
-       unsigned slice_elements, slice_bytes, pipe_interleave_bytes, base_align;
-       unsigned num_pipes = sscreen->info.num_tile_pipes;
-
-       assert(sscreen->info.chip_class <= VI);
-
-       rtex->surface.htile_size = 0;
-
-       /* HTILE is broken with 1D tiling on old kernels and CIK. */
-       if (sscreen->info.chip_class >= CIK &&
-           rtex->surface.u.legacy.level[0].mode == RADEON_SURF_MODE_1D &&
-           sscreen->info.drm_major == 2 && sscreen->info.drm_minor < 38)
-               return;
-
-       /* Overalign HTILE on P2 configs to work around GPU hangs in
-        * piglit/depthstencil-render-miplevels 585.
-        *
-        * This has been confirmed to help Kabini & Stoney, where the hangs
-        * are always reproducible. I think I have seen the test hang
-        * on Carrizo too, though it was very rare there.
-        */
-       if (sscreen->info.chip_class >= CIK && num_pipes < 4)
-               num_pipes = 4;
-
-       switch (num_pipes) {
-       case 1:
-               cl_width = 32;
-               cl_height = 16;
-               break;
-       case 2:
-               cl_width = 32;
-               cl_height = 32;
-               break;
-       case 4:
-               cl_width = 64;
-               cl_height = 32;
-               break;
-       case 8:
-               cl_width = 64;
-               cl_height = 64;
-               break;
-       case 16:
-               cl_width = 128;
-               cl_height = 64;
-               break;
-       default:
-               assert(0);
-               return;
-       }
-
-       width = align(rtex->resource.b.b.width0, cl_width * 8);
-       height = align(rtex->resource.b.b.height0, cl_height * 8);
-
-       slice_elements = (width * height) / (8 * 8);
-       slice_bytes = slice_elements * 4;
-
-       pipe_interleave_bytes = sscreen->info.pipe_interleave_bytes;
-       base_align = num_pipes * pipe_interleave_bytes;
-
-       rtex->surface.htile_alignment = base_align;
-       rtex->surface.htile_size =
-               util_num_layers(&rtex->resource.b.b, 0) *
-               align(slice_bytes, base_align);
-}
-
-static void si_texture_allocate_htile(struct si_screen *sscreen,
-                                     struct r600_texture *rtex)
-{
-       if (sscreen->info.chip_class <= VI && !rtex->tc_compatible_htile)
-               si_texture_get_htile_size(sscreen, rtex);
-
-       if (!rtex->surface.htile_size)
-               return;
-
-       rtex->htile_offset = align(rtex->size, rtex->surface.htile_alignment);
-       rtex->size = rtex->htile_offset + rtex->surface.htile_size;
-}
-
-void si_print_texture_info(struct si_screen *sscreen,
-                          struct r600_texture *rtex, struct u_log_context *log)
-{
-       int i;
-
-       /* Common parameters. */
-       u_log_printf(log, "  Info: npix_x=%u, npix_y=%u, npix_z=%u, blk_w=%u, "
-               "blk_h=%u, array_size=%u, last_level=%u, "
-               "bpe=%u, nsamples=%u, flags=0x%x, %s\n",
-               rtex->resource.b.b.width0, rtex->resource.b.b.height0,
-               rtex->resource.b.b.depth0, rtex->surface.blk_w,
-               rtex->surface.blk_h,
-               rtex->resource.b.b.array_size, rtex->resource.b.b.last_level,
-               rtex->surface.bpe, rtex->resource.b.b.nr_samples,
-               rtex->surface.flags, util_format_short_name(rtex->resource.b.b.format));
-
-       if (sscreen->info.chip_class >= GFX9) {
-               u_log_printf(log, "  Surf: size=%"PRIu64", slice_size=%"PRIu64", "
-                       "alignment=%u, swmode=%u, epitch=%u, pitch=%u\n",
-                       rtex->surface.surf_size,
-                       rtex->surface.u.gfx9.surf_slice_size,
-                       rtex->surface.surf_alignment,
-                       rtex->surface.u.gfx9.surf.swizzle_mode,
-                       rtex->surface.u.gfx9.surf.epitch,
-                       rtex->surface.u.gfx9.surf_pitch);
-
-               if (rtex->fmask.size) {
-                       u_log_printf(log, "  FMASK: offset=%"PRIu64", size=%"PRIu64", "
-                               "alignment=%u, swmode=%u, epitch=%u\n",
-                               rtex->fmask.offset,
-                               rtex->surface.u.gfx9.fmask_size,
-                               rtex->surface.u.gfx9.fmask_alignment,
-                               rtex->surface.u.gfx9.fmask.swizzle_mode,
-                               rtex->surface.u.gfx9.fmask.epitch);
-               }
-
-               if (rtex->cmask.size) {
-                       u_log_printf(log, "  CMask: offset=%"PRIu64", size=%"PRIu64", "
-                               "alignment=%u, rb_aligned=%u, pipe_aligned=%u\n",
-                               rtex->cmask.offset,
-                               rtex->surface.u.gfx9.cmask_size,
-                               rtex->surface.u.gfx9.cmask_alignment,
-                               rtex->surface.u.gfx9.cmask.rb_aligned,
-                               rtex->surface.u.gfx9.cmask.pipe_aligned);
-               }
-
-               if (rtex->htile_offset) {
-                       u_log_printf(log, "  HTile: offset=%"PRIu64", size=%u, alignment=%u, "
-                               "rb_aligned=%u, pipe_aligned=%u\n",
-                               rtex->htile_offset,
-                               rtex->surface.htile_size,
-                               rtex->surface.htile_alignment,
-                               rtex->surface.u.gfx9.htile.rb_aligned,
-                               rtex->surface.u.gfx9.htile.pipe_aligned);
-               }
-
-               if (rtex->dcc_offset) {
-                       u_log_printf(log, "  DCC: offset=%"PRIu64", size=%u, "
-                               "alignment=%u, pitch_max=%u, num_dcc_levels=%u\n",
-                               rtex->dcc_offset, rtex->surface.dcc_size,
-                               rtex->surface.dcc_alignment,
-                               rtex->surface.u.gfx9.dcc_pitch_max,
-                               rtex->surface.num_dcc_levels);
-               }
-
-               if (rtex->surface.u.gfx9.stencil_offset) {
-                       u_log_printf(log, "  Stencil: offset=%"PRIu64", swmode=%u, epitch=%u\n",
-                               rtex->surface.u.gfx9.stencil_offset,
-                               rtex->surface.u.gfx9.stencil.swizzle_mode,
-                               rtex->surface.u.gfx9.stencil.epitch);
-               }
-               return;
-       }
-
-       u_log_printf(log, "  Layout: size=%"PRIu64", alignment=%u, bankw=%u, "
-               "bankh=%u, nbanks=%u, mtilea=%u, tilesplit=%u, pipeconfig=%u, scanout=%u\n",
-               rtex->surface.surf_size, rtex->surface.surf_alignment, rtex->surface.u.legacy.bankw,
-               rtex->surface.u.legacy.bankh, rtex->surface.u.legacy.num_banks, rtex->surface.u.legacy.mtilea,
-               rtex->surface.u.legacy.tile_split, rtex->surface.u.legacy.pipe_config,
-               (rtex->surface.flags & RADEON_SURF_SCANOUT) != 0);
-
-       if (rtex->fmask.size)
-               u_log_printf(log, "  FMask: offset=%"PRIu64", size=%"PRIu64", alignment=%u, pitch_in_pixels=%u, "
-                       "bankh=%u, slice_tile_max=%u, tile_mode_index=%u\n",
-                       rtex->fmask.offset, rtex->fmask.size, rtex->fmask.alignment,
-                       rtex->fmask.pitch_in_pixels, rtex->fmask.bank_height,
-                       rtex->fmask.slice_tile_max, rtex->fmask.tile_mode_index);
-
-       if (rtex->cmask.size)
-               u_log_printf(log, "  CMask: offset=%"PRIu64", size=%"PRIu64", alignment=%u, "
-                       "slice_tile_max=%u\n",
-                       rtex->cmask.offset, rtex->cmask.size, rtex->cmask.alignment,
-                       rtex->cmask.slice_tile_max);
-
-       if (rtex->htile_offset)
-               u_log_printf(log, "  HTile: offset=%"PRIu64", size=%u, "
-                       "alignment=%u, TC_compatible = %u\n",
-                       rtex->htile_offset, rtex->surface.htile_size,
-                       rtex->surface.htile_alignment,
-                       rtex->tc_compatible_htile);
-
-       if (rtex->dcc_offset) {
-               u_log_printf(log, "  DCC: offset=%"PRIu64", size=%u, alignment=%u\n",
-                       rtex->dcc_offset, rtex->surface.dcc_size,
-                       rtex->surface.dcc_alignment);
-               for (i = 0; i <= rtex->resource.b.b.last_level; i++)
-                       u_log_printf(log, "  DCCLevel[%i]: enabled=%u, offset=%u, "
-                               "fast_clear_size=%u\n",
-                               i, i < rtex->surface.num_dcc_levels,
-                               rtex->surface.u.legacy.level[i].dcc_offset,
-                               rtex->surface.u.legacy.level[i].dcc_fast_clear_size);
-       }
-
-       for (i = 0; i <= rtex->resource.b.b.last_level; i++)
-               u_log_printf(log, "  Level[%i]: offset=%"PRIu64", slice_size=%"PRIu64", "
-                       "npix_x=%u, npix_y=%u, npix_z=%u, nblk_x=%u, nblk_y=%u, "
-                       "mode=%u, tiling_index = %u\n",
-                       i, rtex->surface.u.legacy.level[i].offset,
-                       (uint64_t)rtex->surface.u.legacy.level[i].slice_size_dw * 4,
-                       u_minify(rtex->resource.b.b.width0, i),
-                       u_minify(rtex->resource.b.b.height0, i),
-                       u_minify(rtex->resource.b.b.depth0, i),
-                       rtex->surface.u.legacy.level[i].nblk_x,
-                       rtex->surface.u.legacy.level[i].nblk_y,
-                       rtex->surface.u.legacy.level[i].mode,
-                       rtex->surface.u.legacy.tiling_index[i]);
-
-       if (rtex->surface.has_stencil) {
-               u_log_printf(log, "  StencilLayout: tilesplit=%u\n",
-                       rtex->surface.u.legacy.stencil_tile_split);
-               for (i = 0; i <= rtex->resource.b.b.last_level; i++) {
-                       u_log_printf(log, "  StencilLevel[%i]: offset=%"PRIu64", "
-                               "slice_size=%"PRIu64", npix_x=%u, "
-                               "npix_y=%u, npix_z=%u, nblk_x=%u, nblk_y=%u, "
-                               "mode=%u, tiling_index = %u\n",
-                               i, rtex->surface.u.legacy.stencil_level[i].offset,
-                               (uint64_t)rtex->surface.u.legacy.stencil_level[i].slice_size_dw * 4,
-                               u_minify(rtex->resource.b.b.width0, i),
-                               u_minify(rtex->resource.b.b.height0, i),
-                               u_minify(rtex->resource.b.b.depth0, i),
-                               rtex->surface.u.legacy.stencil_level[i].nblk_x,
-                               rtex->surface.u.legacy.stencil_level[i].nblk_y,
-                               rtex->surface.u.legacy.stencil_level[i].mode,
-                               rtex->surface.u.legacy.stencil_tiling_index[i]);
-               }
-       }
-}
-
-/* Common processing for r600_texture_create and r600_texture_from_handle */
-static struct r600_texture *
-si_texture_create_object(struct pipe_screen *screen,
-                        const struct pipe_resource *base,
-                        struct pb_buffer *buf,
-                        struct radeon_surf *surface)
-{
-       struct r600_texture *rtex;
-       struct r600_resource *resource;
-       struct si_screen *sscreen = (struct si_screen*)screen;
-
-       rtex = CALLOC_STRUCT(r600_texture);
-       if (!rtex)
-               return NULL;
-
-       resource = &rtex->resource;
-       resource->b.b = *base;
-       resource->b.b.next = NULL;
-       resource->b.vtbl = &si_texture_vtbl;
-       pipe_reference_init(&resource->b.b.reference, 1);
-       resource->b.b.screen = screen;
-
-       /* don't include stencil-only formats which we don't support for rendering */
-       rtex->is_depth = util_format_has_depth(util_format_description(rtex->resource.b.b.format));
-
-       rtex->surface = *surface;
-       rtex->size = rtex->surface.surf_size;
-
-       rtex->tc_compatible_htile = rtex->surface.htile_size != 0 &&
-                                   (rtex->surface.flags &
-                                    RADEON_SURF_TC_COMPATIBLE_HTILE);
-
-       /* TC-compatible HTILE:
-        * - VI only supports Z32_FLOAT.
-        * - GFX9 only supports Z32_FLOAT and Z16_UNORM. */
-       if (rtex->tc_compatible_htile) {
-               if (sscreen->info.chip_class >= GFX9 &&
-                   base->format == PIPE_FORMAT_Z16_UNORM)
-                       rtex->db_render_format = base->format;
-               else {
-                       rtex->db_render_format = PIPE_FORMAT_Z32_FLOAT;
-                       rtex->upgraded_depth = base->format != PIPE_FORMAT_Z32_FLOAT &&
-                                              base->format != PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
-               }
-       } else {
-               rtex->db_render_format = base->format;
-       }
-
-       /* Applies to GCN. */
-       rtex->last_msaa_resolve_target_micro_mode = rtex->surface.micro_tile_mode;
-
-       /* Disable separate DCC at the beginning. DRI2 doesn't reuse buffers
-        * between frames, so the only thing that can enable separate DCC
-        * with DRI2 is multiple slow clears within a frame.
-        */
-       rtex->ps_draw_ratio = 0;
-
-       if (rtex->is_depth) {
-               if (sscreen->info.chip_class >= GFX9) {
-                       rtex->can_sample_z = true;
-                       rtex->can_sample_s = true;
-               } else {
-                       rtex->can_sample_z = !rtex->surface.u.legacy.depth_adjusted;
-                       rtex->can_sample_s = !rtex->surface.u.legacy.stencil_adjusted;
-               }
-
-               if (!(base->flags & (SI_RESOURCE_FLAG_TRANSFER |
-                                    SI_RESOURCE_FLAG_FLUSHED_DEPTH))) {
-                       rtex->db_compatible = true;
-
-                       if (!(sscreen->debug_flags & DBG(NO_HYPERZ)))
-                               si_texture_allocate_htile(sscreen, rtex);
-               }
-       } else {
-               if (base->nr_samples > 1 &&
-                   !buf &&
-                   !(sscreen->debug_flags & DBG(NO_FMASK))) {
-                       si_texture_allocate_fmask(sscreen, rtex);
-                       si_texture_allocate_cmask(sscreen, rtex);
-                       rtex->cmask_buffer = &rtex->resource;
-
-                       if (!rtex->fmask.size || !rtex->cmask.size) {
-                               FREE(rtex);
-                               return NULL;
-                       }
-               }
-
-               /* Shared textures must always set up DCC here.
-                * If it's not present, it will be disabled by
-                * apply_opaque_metadata later.
-                */
-               if (rtex->surface.dcc_size &&
-                   (buf || !(sscreen->debug_flags & DBG(NO_DCC))) &&
-                   !(rtex->surface.flags & RADEON_SURF_SCANOUT)) {
-                       /* Reserve space for the DCC buffer. */
-                       rtex->dcc_offset = align64(rtex->size, rtex->surface.dcc_alignment);
-                       rtex->size = rtex->dcc_offset + rtex->surface.dcc_size;
-               }
-       }
-
-       /* Now create the backing buffer. */
-       if (!buf) {
-               si_init_resource_fields(sscreen, resource, rtex->size,
-                                         rtex->surface.surf_alignment);
-
-               if (!si_alloc_resource(sscreen, resource)) {
-                       FREE(rtex);
-                       return NULL;
-               }
-       } else {
-               resource->buf = buf;
-               resource->gpu_address = sscreen->ws->buffer_get_virtual_address(resource->buf);
-               resource->bo_size = buf->size;
-               resource->bo_alignment = buf->alignment;
-               resource->domains = sscreen->ws->buffer_get_initial_domain(resource->buf);
-               if (resource->domains & RADEON_DOMAIN_VRAM)
-                       resource->vram_usage = buf->size;
-               else if (resource->domains & RADEON_DOMAIN_GTT)
-                       resource->gart_usage = buf->size;
-       }
-
-       if (rtex->cmask.size) {
-               /* Initialize the cmask to 0xCC (= compressed state). */
-               si_screen_clear_buffer(sscreen, &rtex->cmask_buffer->b.b,
-                                        rtex->cmask.offset, rtex->cmask.size,
-                                        0xCCCCCCCC);
-       }
-       if (rtex->htile_offset) {
-               uint32_t clear_value = 0;
-
-               if (sscreen->info.chip_class >= GFX9 || rtex->tc_compatible_htile)
-                       clear_value = 0x0000030F;
-
-               si_screen_clear_buffer(sscreen, &rtex->resource.b.b,
-                                        rtex->htile_offset,
-                                        rtex->surface.htile_size,
-                                        clear_value);
-       }
-
-       /* Initialize DCC only if the texture is not being imported. */
-       if (!buf && rtex->dcc_offset) {
-               si_screen_clear_buffer(sscreen, &rtex->resource.b.b,
-                                        rtex->dcc_offset,
-                                        rtex->surface.dcc_size,
-                                        0xFFFFFFFF);
-       }
-
-       /* Initialize the CMASK base register value. */
-       rtex->cmask.base_address_reg =
-               (rtex->resource.gpu_address + rtex->cmask.offset) >> 8;
-
-       if (sscreen->debug_flags & DBG(VM)) {
-               fprintf(stderr, "VM start=0x%"PRIX64"  end=0x%"PRIX64" | Texture %ix%ix%i, %i levels, %i samples, %s\n",
-                       rtex->resource.gpu_address,
-                       rtex->resource.gpu_address + rtex->resource.buf->size,
-                       base->width0, base->height0, util_num_layers(base, 0), base->last_level+1,
-                       base->nr_samples ? base->nr_samples : 1, util_format_short_name(base->format));
-       }
-
-       if (sscreen->debug_flags & DBG(TEX)) {
-               puts("Texture:");
-               struct u_log_context log;
-               u_log_context_init(&log);
-               si_print_texture_info(sscreen, rtex, &log);
-               u_log_new_page_print(&log, stdout);
-               fflush(stdout);
-               u_log_context_destroy(&log);
-       }
-
-       return rtex;
-}
-
-static enum radeon_surf_mode
-si_choose_tiling(struct si_screen *sscreen,
-                  const struct pipe_resource *templ)
-{
-       const struct util_format_description *desc = util_format_description(templ->format);
-       bool force_tiling = templ->flags & SI_RESOURCE_FLAG_FORCE_TILING;
-       bool is_depth_stencil = util_format_is_depth_or_stencil(templ->format) &&
-                               !(templ->flags & SI_RESOURCE_FLAG_FLUSHED_DEPTH);
-
-       /* MSAA resources must be 2D tiled. */
-       if (templ->nr_samples > 1)
-               return RADEON_SURF_MODE_2D;
-
-       /* Transfer resources should be linear. */
-       if (templ->flags & SI_RESOURCE_FLAG_TRANSFER)
-               return RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-       /* Avoid Z/S decompress blits by forcing TC-compatible HTILE on VI,
-        * which requires 2D tiling.
-        */
-       if (sscreen->info.chip_class == VI &&
-           is_depth_stencil &&
-           (templ->flags & PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY))
-               return RADEON_SURF_MODE_2D;
-
-       /* Handle common candidates for the linear mode.
-        * Compressed textures and DB surfaces must always be tiled.
-        */
-       if (!force_tiling &&
-           !is_depth_stencil &&
-           !util_format_is_compressed(templ->format)) {
-               if (sscreen->debug_flags & DBG(NO_TILING))
-                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               /* Tiling doesn't work with the 422 (SUBSAMPLED) formats on R600+. */
-               if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED)
-                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               /* Cursors are linear on SI.
-                * (XXX double-check, maybe also use RADEON_SURF_SCANOUT) */
-               if (templ->bind & PIPE_BIND_CURSOR)
-                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               if (templ->bind & PIPE_BIND_LINEAR)
-                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               /* Textures with a very small height are recommended to be linear. */
-               if (templ->target == PIPE_TEXTURE_1D ||
-                   templ->target == PIPE_TEXTURE_1D_ARRAY ||
-                   /* Only very thin and long 2D textures should benefit from
-                    * linear_aligned. */
-                   (templ->width0 > 8 && templ->height0 <= 2))
-                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
-
-               /* Textures likely to be mapped often. */
-               if (templ->usage == PIPE_USAGE_STAGING ||
-                   templ->usage == PIPE_USAGE_STREAM)
-                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
-       }
-
-       /* Make small textures 1D tiled. */
-       if (templ->width0 <= 16 || templ->height0 <= 16 ||
-           (sscreen->debug_flags & DBG(NO_2D_TILING)))
-               return RADEON_SURF_MODE_1D;
-
-       /* The allocator will switch to 1D if needed. */
-       return RADEON_SURF_MODE_2D;
-}
-
-struct pipe_resource *si_texture_create(struct pipe_screen *screen,
-                                       const struct pipe_resource *templ)
-{
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct radeon_surf surface = {0};
-       bool is_flushed_depth = templ->flags & SI_RESOURCE_FLAG_FLUSHED_DEPTH;
-       bool tc_compatible_htile =
-               sscreen->info.chip_class >= VI &&
-               (templ->flags & PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY) &&
-               !(sscreen->debug_flags & DBG(NO_HYPERZ)) &&
-               !is_flushed_depth &&
-               templ->nr_samples <= 1 && /* TC-compat HTILE is less efficient with MSAA */
-               util_format_is_depth_or_stencil(templ->format);
-
-       int r;
-
-       r = si_init_surface(sscreen, &surface, templ,
-                             si_choose_tiling(sscreen, templ), 0, 0,
-                             false, false, is_flushed_depth,
-                             tc_compatible_htile);
-       if (r) {
-               return NULL;
-       }
-
-       return (struct pipe_resource *)
-              si_texture_create_object(screen, templ, NULL, &surface);
-}
-
-static struct pipe_resource *si_texture_from_handle(struct pipe_screen *screen,
-                                                   const struct pipe_resource *templ,
-                                                   struct winsys_handle *whandle,
-                                                   unsigned usage)
-{
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct pb_buffer *buf = NULL;
-       unsigned stride = 0, offset = 0;
-       enum radeon_surf_mode array_mode;
-       struct radeon_surf surface = {};
-       int r;
-       struct radeon_bo_metadata metadata = {};
-       struct r600_texture *rtex;
-       bool is_scanout;
-
-       /* Support only 2D textures without mipmaps */
-       if ((templ->target != PIPE_TEXTURE_2D && templ->target != PIPE_TEXTURE_RECT) ||
-             templ->depth0 != 1 || templ->last_level != 0)
-               return NULL;
-
-       buf = sscreen->ws->buffer_from_handle(sscreen->ws, whandle, &stride, &offset);
-       if (!buf)
-               return NULL;
-
-       sscreen->ws->buffer_get_metadata(buf, &metadata);
-       si_surface_import_metadata(sscreen, &surface, &metadata,
-                                    &array_mode, &is_scanout);
-
-       r = si_init_surface(sscreen, &surface, templ, array_mode, stride,
-                             offset, true, is_scanout, false, false);
-       if (r) {
-               return NULL;
-       }
-
-       rtex = si_texture_create_object(screen, templ, buf, &surface);
-       if (!rtex)
-               return NULL;
-
-       rtex->resource.b.is_shared = true;
-       rtex->resource.external_usage = usage;
-
-       si_apply_opaque_metadata(sscreen, rtex, &metadata);
-
-       assert(rtex->surface.tile_swizzle == 0);
-       return &rtex->resource.b.b;
-}
-
-bool si_init_flushed_depth_texture(struct pipe_context *ctx,
-                                  struct pipe_resource *texture,
-                                  struct r600_texture **staging)
-{
-       struct r600_texture *rtex = (struct r600_texture*)texture;
-       struct pipe_resource resource;
-       struct r600_texture **flushed_depth_texture = staging ?
-                       staging : &rtex->flushed_depth_texture;
-       enum pipe_format pipe_format = texture->format;
-
-       if (!staging) {
-               if (rtex->flushed_depth_texture)
-                       return true; /* it's ready */
-
-               if (!rtex->can_sample_z && rtex->can_sample_s) {
-                       switch (pipe_format) {
-                       case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
-                               /* Save memory by not allocating the S plane. */
-                               pipe_format = PIPE_FORMAT_Z32_FLOAT;
-                               break;
-                       case PIPE_FORMAT_Z24_UNORM_S8_UINT:
-                       case PIPE_FORMAT_S8_UINT_Z24_UNORM:
-                               /* Save memory bandwidth by not copying the
-                                * stencil part during flush.
-                                *
-                                * This potentially increases memory bandwidth
-                                * if an application uses both Z and S texturing
-                                * simultaneously (a flushed Z24S8 texture
-                                * would be stored compactly), but how often
-                                * does that really happen?
-                                */
-                               pipe_format = PIPE_FORMAT_Z24X8_UNORM;
-                               break;
-                       default:;
-                       }
-               } else if (!rtex->can_sample_s && rtex->can_sample_z) {
-                       assert(util_format_has_stencil(util_format_description(pipe_format)));
-
-                       /* DB->CB copies to an 8bpp surface don't work. */
-                       pipe_format = PIPE_FORMAT_X24S8_UINT;
-               }
-       }
-
-       memset(&resource, 0, sizeof(resource));
-       resource.target = texture->target;
-       resource.format = pipe_format;
-       resource.width0 = texture->width0;
-       resource.height0 = texture->height0;
-       resource.depth0 = texture->depth0;
-       resource.array_size = texture->array_size;
-       resource.last_level = texture->last_level;
-       resource.nr_samples = texture->nr_samples;
-       resource.usage = staging ? PIPE_USAGE_STAGING : PIPE_USAGE_DEFAULT;
-       resource.bind = texture->bind & ~PIPE_BIND_DEPTH_STENCIL;
-       resource.flags = texture->flags | SI_RESOURCE_FLAG_FLUSHED_DEPTH;
-
-       if (staging)
-               resource.flags |= SI_RESOURCE_FLAG_TRANSFER;
-
-       *flushed_depth_texture = (struct r600_texture *)ctx->screen->resource_create(ctx->screen, &resource);
-       if (*flushed_depth_texture == NULL) {
-               PRINT_ERR("failed to create temporary texture to hold flushed depth\n");
-               return false;
-       }
-       return true;
-}
-
-/**
- * Initialize the pipe_resource descriptor to be of the same size as the box,
- * which is supposed to hold a subregion of the texture "orig" at the given
- * mipmap level.
- */
-static void si_init_temp_resource_from_box(struct pipe_resource *res,
-                                          struct pipe_resource *orig,
-                                          const struct pipe_box *box,
-                                          unsigned level, unsigned flags)
-{
-       memset(res, 0, sizeof(*res));
-       res->format = orig->format;
-       res->width0 = box->width;
-       res->height0 = box->height;
-       res->depth0 = 1;
-       res->array_size = 1;
-       res->usage = flags & SI_RESOURCE_FLAG_TRANSFER ? PIPE_USAGE_STAGING : PIPE_USAGE_DEFAULT;
-       res->flags = flags;
-
-       /* We must set the correct texture target and dimensions for a 3D box. */
-       if (box->depth > 1 && util_max_layer(orig, level) > 0) {
-               res->target = PIPE_TEXTURE_2D_ARRAY;
-               res->array_size = box->depth;
-       } else {
-               res->target = PIPE_TEXTURE_2D;
-       }
-}
-
-static bool si_can_invalidate_texture(struct si_screen *sscreen,
-                                     struct r600_texture *rtex,
-                                     unsigned transfer_usage,
-                                     const struct pipe_box *box)
-{
-       return !rtex->resource.b.is_shared &&
-               !(transfer_usage & PIPE_TRANSFER_READ) &&
-               rtex->resource.b.b.last_level == 0 &&
-               util_texrange_covers_whole_level(&rtex->resource.b.b, 0,
-                                                box->x, box->y, box->z,
-                                                box->width, box->height,
-                                                box->depth);
-}
-
-static void si_texture_invalidate_storage(struct si_context *sctx,
-                                         struct r600_texture *rtex)
-{
-       struct si_screen *sscreen = sctx->screen;
-
-       /* There is no point in discarding depth and tiled buffers. */
-       assert(!rtex->is_depth);
-       assert(rtex->surface.is_linear);
-
-       /* Reallocate the buffer in the same pipe_resource. */
-       si_alloc_resource(sscreen, &rtex->resource);
-
-       /* Initialize the CMASK base address (needed even without CMASK). */
-       rtex->cmask.base_address_reg =
-               (rtex->resource.gpu_address + rtex->cmask.offset) >> 8;
-
-       p_atomic_inc(&sscreen->dirty_tex_counter);
-
-       sctx->b.num_alloc_tex_transfer_bytes += rtex->size;
-}
-
-static void *si_texture_transfer_map(struct pipe_context *ctx,
-                                    struct pipe_resource *texture,
-                                    unsigned level,
-                                    unsigned usage,
-                                    const struct pipe_box *box,
-                                    struct pipe_transfer **ptransfer)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_texture *rtex = (struct r600_texture*)texture;
-       struct r600_transfer *trans;
-       struct r600_resource *buf;
-       unsigned offset = 0;
-       char *map;
-       bool use_staging_texture = false;
-
-       assert(!(texture->flags & SI_RESOURCE_FLAG_TRANSFER));
-       assert(box->width && box->height && box->depth);
-
-       /* Depth textures use staging unconditionally. */
-       if (!rtex->is_depth) {
-               /* Degrade the tile mode if we get too many transfers on APUs.
-                * On dGPUs, the staging texture is always faster.
-                * Only count uploads that are at least 4x4 pixels large.
-                */
-               if (!sctx->screen->info.has_dedicated_vram &&
-                   level == 0 &&
-                   box->width >= 4 && box->height >= 4 &&
-                   p_atomic_inc_return(&rtex->num_level0_transfers) == 10) {
-                       bool can_invalidate =
-                               si_can_invalidate_texture(sctx->screen, rtex,
-                                                           usage, box);
-
-                       si_reallocate_texture_inplace(sctx, rtex,
-                                                       PIPE_BIND_LINEAR,
-                                                       can_invalidate);
-               }
-
-               /* Tiled textures need to be converted into a linear texture for CPU
-                * access. The staging texture is always linear and is placed in GART.
-                *
-                * Reading from VRAM or GTT WC is slow, always use the staging
-                * texture in this case.
-                *
-                * Use the staging texture for uploads if the underlying BO
-                * is busy.
-                */
-               if (!rtex->surface.is_linear)
-                       use_staging_texture = true;
-               else if (usage & PIPE_TRANSFER_READ)
-                       use_staging_texture =
-                               rtex->resource.domains & RADEON_DOMAIN_VRAM ||
-                               rtex->resource.flags & RADEON_FLAG_GTT_WC;
-               /* Write & linear only: */
-               else if (si_rings_is_buffer_referenced(sctx, rtex->resource.buf,
-                                                      RADEON_USAGE_READWRITE) ||
-                        !sctx->b.ws->buffer_wait(rtex->resource.buf, 0,
-                                               RADEON_USAGE_READWRITE)) {
-                       /* It's busy. */
-                       if (si_can_invalidate_texture(sctx->screen, rtex,
-                                                       usage, box))
-                               si_texture_invalidate_storage(sctx, rtex);
-                       else
-                               use_staging_texture = true;
-               }
-       }
-
-       trans = CALLOC_STRUCT(r600_transfer);
-       if (!trans)
-               return NULL;
-       pipe_resource_reference(&trans->b.b.resource, texture);
-       trans->b.b.level = level;
-       trans->b.b.usage = usage;
-       trans->b.b.box = *box;
-
-       if (rtex->is_depth) {
-               struct r600_texture *staging_depth;
-
-               if (rtex->resource.b.b.nr_samples > 1) {
-                       /* MSAA depth buffers need to be converted to single sample buffers.
-                        *
-                        * Mapping MSAA depth buffers can occur if ReadPixels is called
-                        * with a multisample GLX visual.
-                        *
-                        * First downsample the depth buffer to a temporary texture,
-                        * then decompress the temporary one to staging.
-                        *
-                        * Only the region being mapped is transfered.
-                        */
-                       struct pipe_resource resource;
-
-                       si_init_temp_resource_from_box(&resource, texture, box, level, 0);
-
-                       if (!si_init_flushed_depth_texture(ctx, &resource, &staging_depth)) {
-                               PRINT_ERR("failed to create temporary texture to hold untiled copy\n");
-                               FREE(trans);
-                               return NULL;
-                       }
-
-                       if (usage & PIPE_TRANSFER_READ) {
-                               struct pipe_resource *temp = ctx->screen->resource_create(ctx->screen, &resource);
-                               if (!temp) {
-                                       PRINT_ERR("failed to create a temporary depth texture\n");
-                                       FREE(trans);
-                                       return NULL;
-                               }
-
-                               si_copy_region_with_blit(ctx, temp, 0, 0, 0, 0, texture, level, box);
-                               si_blit_decompress_depth(ctx, (struct r600_texture*)temp, staging_depth,
-                                                        0, 0, 0, box->depth, 0, 0);
-                               pipe_resource_reference(&temp, NULL);
-                       }
-
-                       /* Just get the strides. */
-                       si_texture_get_offset(sctx->screen, staging_depth, level, NULL,
-                                               &trans->b.b.stride,
-                                               &trans->b.b.layer_stride);
-               } else {
-                       /* XXX: only readback the rectangle which is being mapped? */
-                       /* XXX: when discard is true, no need to read back from depth texture */
-                       if (!si_init_flushed_depth_texture(ctx, texture, &staging_depth)) {
-                               PRINT_ERR("failed to create temporary texture to hold untiled copy\n");
-                               FREE(trans);
-                               return NULL;
-                       }
-
-                       si_blit_decompress_depth(ctx, rtex, staging_depth,
-                                                level, level,
-                                                box->z, box->z + box->depth - 1,
-                                                0, 0);
-
-                       offset = si_texture_get_offset(sctx->screen, staging_depth,
-                                                        level, box,
-                                                        &trans->b.b.stride,
-                                                        &trans->b.b.layer_stride);
-               }
-
-               trans->staging = (struct r600_resource*)staging_depth;
-               buf = trans->staging;
-       } else if (use_staging_texture) {
-               struct pipe_resource resource;
-               struct r600_texture *staging;
-
-               si_init_temp_resource_from_box(&resource, texture, box, level,
-                                                SI_RESOURCE_FLAG_TRANSFER);
-               resource.usage = (usage & PIPE_TRANSFER_READ) ?
-                       PIPE_USAGE_STAGING : PIPE_USAGE_STREAM;
-
-               /* Create the temporary texture. */
-               staging = (struct r600_texture*)ctx->screen->resource_create(ctx->screen, &resource);
-               if (!staging) {
-                       PRINT_ERR("failed to create temporary texture to hold untiled copy\n");
-                       FREE(trans);
-                       return NULL;
-               }
-               trans->staging = &staging->resource;
-
-               /* Just get the strides. */
-               si_texture_get_offset(sctx->screen, staging, 0, NULL,
-                                       &trans->b.b.stride,
-                                       &trans->b.b.layer_stride);
-
-               if (usage & PIPE_TRANSFER_READ)
-                       si_copy_to_staging_texture(ctx, trans);
-               else
-                       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
-
-               buf = trans->staging;
-       } else {
-               /* the resource is mapped directly */
-               offset = si_texture_get_offset(sctx->screen, rtex, level, box,
-                                                &trans->b.b.stride,
-                                                &trans->b.b.layer_stride);
-               buf = &rtex->resource;
-       }
-
-       if (!(map = si_buffer_map_sync_with_rings(sctx, buf, usage))) {
-               r600_resource_reference(&trans->staging, NULL);
-               FREE(trans);
-               return NULL;
-       }
-
-       *ptransfer = &trans->b.b;
-       return map + offset;
-}
-
-static void si_texture_transfer_unmap(struct pipe_context *ctx,
-                                     struct pipe_transfer* transfer)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
-       struct pipe_resource *texture = transfer->resource;
-       struct r600_texture *rtex = (struct r600_texture*)texture;
-
-       if ((transfer->usage & PIPE_TRANSFER_WRITE) && rtransfer->staging) {
-               if (rtex->is_depth && rtex->resource.b.b.nr_samples <= 1) {
-                       ctx->resource_copy_region(ctx, texture, transfer->level,
-                                                 transfer->box.x, transfer->box.y, transfer->box.z,
-                                                 &rtransfer->staging->b.b, transfer->level,
-                                                 &transfer->box);
-               } else {
-                       si_copy_from_staging_texture(ctx, rtransfer);
-               }
-       }
-
-       if (rtransfer->staging) {
-               sctx->b.num_alloc_tex_transfer_bytes += rtransfer->staging->buf->size;
-               r600_resource_reference(&rtransfer->staging, NULL);
-       }
-
-       /* Heuristic for {upload, draw, upload, draw, ..}:
-        *
-        * Flush the gfx IB if we've allocated too much texture storage.
-        *
-        * The idea is that we don't want to build IBs that use too much
-        * memory and put pressure on the kernel memory manager and we also
-        * want to make temporary and invalidated buffers go idle ASAP to
-        * decrease the total memory usage or make them reusable. The memory
-        * usage will be slightly higher than given here because of the buffer
-        * cache in the winsys.
-        *
-        * The result is that the kernel memory manager is never a bottleneck.
-        */
-       if (sctx->b.num_alloc_tex_transfer_bytes > sctx->screen->info.gart_size / 4) {
-               si_flush_gfx_cs(sctx, PIPE_FLUSH_ASYNC, NULL);
-               sctx->b.num_alloc_tex_transfer_bytes = 0;
-       }
-
-       pipe_resource_reference(&transfer->resource, NULL);
-       FREE(transfer);
-}
-
-static const struct u_resource_vtbl si_texture_vtbl =
-{
-       NULL,                           /* get_handle */
-       si_texture_destroy,             /* resource_destroy */
-       si_texture_transfer_map,        /* transfer_map */
-       u_default_transfer_flush_region, /* transfer_flush_region */
-       si_texture_transfer_unmap,      /* transfer_unmap */
-};
-
-/* DCC channel type categories within which formats can be reinterpreted
- * while keeping the same DCC encoding. The swizzle must also match. */
-enum dcc_channel_type {
-       dcc_channel_float,
-       /* uint and sint can be merged if we never use TC-compatible DCC clear
-        * encoding with the clear value of 1. */
-       dcc_channel_uint,
-       dcc_channel_sint,
-       dcc_channel_uint_10_10_10_2,
-       dcc_channel_incompatible,
-};
-
-/* Return the type of DCC encoding. */
-static enum dcc_channel_type
-vi_get_dcc_channel_type(const struct util_format_description *desc)
-{
-       int i;
-
-       /* Find the first non-void channel. */
-       for (i = 0; i < desc->nr_channels; i++)
-               if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID)
-                       break;
-       if (i == desc->nr_channels)
-               return dcc_channel_incompatible;
-
-       switch (desc->channel[i].size) {
-       case 32:
-       case 16:
-       case 8:
-               if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
-                       return dcc_channel_float;
-               if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
-                       return dcc_channel_uint;
-               return dcc_channel_sint;
-       case 10:
-               return dcc_channel_uint_10_10_10_2;
-       default:
-               return dcc_channel_incompatible;
-       }
-}
-
-/* Return if it's allowed to reinterpret one format as another with DCC enabled. */
-bool vi_dcc_formats_compatible(enum pipe_format format1,
-                              enum pipe_format format2)
-{
-       const struct util_format_description *desc1, *desc2;
-       enum dcc_channel_type type1, type2;
-       int i;
-
-       if (format1 == format2)
-               return true;
-
-       desc1 = util_format_description(format1);
-       desc2 = util_format_description(format2);
-
-       if (desc1->nr_channels != desc2->nr_channels)
-               return false;
-
-       /* Swizzles must be the same. */
-       for (i = 0; i < desc1->nr_channels; i++)
-               if (desc1->swizzle[i] <= PIPE_SWIZZLE_W &&
-                   desc2->swizzle[i] <= PIPE_SWIZZLE_W &&
-                   desc1->swizzle[i] != desc2->swizzle[i])
-                       return false;
-
-       type1 = vi_get_dcc_channel_type(desc1);
-       type2 = vi_get_dcc_channel_type(desc2);
-
-       return type1 != dcc_channel_incompatible &&
-              type2 != dcc_channel_incompatible &&
-              type1 == type2;
-}
-
-bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,
-                                    unsigned level,
-                                    enum pipe_format view_format)
-{
-       struct r600_texture *rtex = (struct r600_texture *)tex;
-
-       return vi_dcc_enabled(rtex, level) &&
-              !vi_dcc_formats_compatible(tex->format, view_format);
-}
-
-/* This can't be merged with the above function, because
- * vi_dcc_formats_compatible should be called only when DCC is enabled. */
-void vi_disable_dcc_if_incompatible_format(struct si_context *sctx,
-                                          struct pipe_resource *tex,
-                                          unsigned level,
-                                          enum pipe_format view_format)
-{
-       struct r600_texture *rtex = (struct r600_texture *)tex;
-
-       if (vi_dcc_formats_are_incompatible(tex, level, view_format))
-               if (!si_texture_disable_dcc(sctx, (struct r600_texture*)tex))
-                       si_decompress_dcc(sctx, rtex);
-}
-
-struct pipe_surface *si_create_surface_custom(struct pipe_context *pipe,
-                                             struct pipe_resource *texture,
-                                             const struct pipe_surface *templ,
-                                             unsigned width0, unsigned height0,
-                                             unsigned width, unsigned height)
-{
-       struct r600_surface *surface = CALLOC_STRUCT(r600_surface);
-
-       if (!surface)
-               return NULL;
-
-       assert(templ->u.tex.first_layer <= util_max_layer(texture, templ->u.tex.level));
-       assert(templ->u.tex.last_layer <= util_max_layer(texture, templ->u.tex.level));
-
-       pipe_reference_init(&surface->base.reference, 1);
-       pipe_resource_reference(&surface->base.texture, texture);
-       surface->base.context = pipe;
-       surface->base.format = templ->format;
-       surface->base.width = width;
-       surface->base.height = height;
-       surface->base.u = templ->u;
-
-       surface->width0 = width0;
-       surface->height0 = height0;
-
-       surface->dcc_incompatible =
-               texture->target != PIPE_BUFFER &&
-               vi_dcc_formats_are_incompatible(texture, templ->u.tex.level,
-                                               templ->format);
-       return &surface->base;
-}
-
-static struct pipe_surface *si_create_surface(struct pipe_context *pipe,
-                                             struct pipe_resource *tex,
-                                             const struct pipe_surface *templ)
-{
-       unsigned level = templ->u.tex.level;
-       unsigned width = u_minify(tex->width0, level);
-       unsigned height = u_minify(tex->height0, level);
-       unsigned width0 = tex->width0;
-       unsigned height0 = tex->height0;
-
-       if (tex->target != PIPE_BUFFER && templ->format != tex->format) {
-               const struct util_format_description *tex_desc
-                       = util_format_description(tex->format);
-               const struct util_format_description *templ_desc
-                       = util_format_description(templ->format);
-
-               assert(tex_desc->block.bits == templ_desc->block.bits);
-
-               /* Adjust size of surface if and only if the block width or
-                * height is changed. */
-               if (tex_desc->block.width != templ_desc->block.width ||
-                   tex_desc->block.height != templ_desc->block.height) {
-                       unsigned nblks_x = util_format_get_nblocksx(tex->format, width);
-                       unsigned nblks_y = util_format_get_nblocksy(tex->format, height);
-
-                       width = nblks_x * templ_desc->block.width;
-                       height = nblks_y * templ_desc->block.height;
-
-                       width0 = util_format_get_nblocksx(tex->format, width0);
-                       height0 = util_format_get_nblocksy(tex->format, height0);
-               }
-       }
-
-       return si_create_surface_custom(pipe, tex, templ,
-                                         width0, height0,
-                                         width, height);
-}
-
-static void si_surface_destroy(struct pipe_context *pipe,
-                              struct pipe_surface *surface)
-{
-       pipe_resource_reference(&surface->texture, NULL);
-       FREE(surface);
-}
-
-unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap)
-{
-       const struct util_format_description *desc = util_format_description(format);
-
-#define HAS_SWIZZLE(chan,swz) (desc->swizzle[chan] == PIPE_SWIZZLE_##swz)
-
-       if (format == PIPE_FORMAT_R11G11B10_FLOAT) /* isn't plain */
-               return V_028C70_SWAP_STD;
-
-       if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
-               return ~0U;
-
-       switch (desc->nr_channels) {
-       case 1:
-               if (HAS_SWIZZLE(0,X))
-                       return V_028C70_SWAP_STD; /* X___ */
-               else if (HAS_SWIZZLE(3,X))
-                       return V_028C70_SWAP_ALT_REV; /* ___X */
-               break;
-       case 2:
-               if ((HAS_SWIZZLE(0,X) && HAS_SWIZZLE(1,Y)) ||
-                   (HAS_SWIZZLE(0,X) && HAS_SWIZZLE(1,NONE)) ||
-                   (HAS_SWIZZLE(0,NONE) && HAS_SWIZZLE(1,Y)))
-                       return V_028C70_SWAP_STD; /* XY__ */
-               else if ((HAS_SWIZZLE(0,Y) && HAS_SWIZZLE(1,X)) ||
-                        (HAS_SWIZZLE(0,Y) && HAS_SWIZZLE(1,NONE)) ||
-                        (HAS_SWIZZLE(0,NONE) && HAS_SWIZZLE(1,X)))
-                       /* YX__ */
-                       return (do_endian_swap ? V_028C70_SWAP_STD : V_028C70_SWAP_STD_REV);
-               else if (HAS_SWIZZLE(0,X) && HAS_SWIZZLE(3,Y))
-                       return V_028C70_SWAP_ALT; /* X__Y */
-               else if (HAS_SWIZZLE(0,Y) && HAS_SWIZZLE(3,X))
-                       return V_028C70_SWAP_ALT_REV; /* Y__X */
-               break;
-       case 3:
-               if (HAS_SWIZZLE(0,X))
-                       return (do_endian_swap ? V_028C70_SWAP_STD_REV : V_028C70_SWAP_STD);
-               else if (HAS_SWIZZLE(0,Z))
-                       return V_028C70_SWAP_STD_REV; /* ZYX */
-               break;
-       case 4:
-               /* check the middle channels, the 1st and 4th channel can be NONE */
-               if (HAS_SWIZZLE(1,Y) && HAS_SWIZZLE(2,Z)) {
-                       return V_028C70_SWAP_STD; /* XYZW */
-               } else if (HAS_SWIZZLE(1,Z) && HAS_SWIZZLE(2,Y)) {
-                       return V_028C70_SWAP_STD_REV; /* WZYX */
-               } else if (HAS_SWIZZLE(1,Y) && HAS_SWIZZLE(2,X)) {
-                       return V_028C70_SWAP_ALT; /* ZYXW */
-               } else if (HAS_SWIZZLE(1,Z) && HAS_SWIZZLE(2,W)) {
-                       /* YZWX */
-                       if (desc->is_array)
-                               return V_028C70_SWAP_ALT_REV;
-                       else
-                               return (do_endian_swap ? V_028C70_SWAP_ALT : V_028C70_SWAP_ALT_REV);
-               }
-               break;
-       }
-       return ~0U;
-}
-
-/* PIPELINE_STAT-BASED DCC ENABLEMENT FOR DISPLAYABLE SURFACES */
-
-static void vi_dcc_clean_up_context_slot(struct si_context *sctx,
-                                        int slot)
-{
-       int i;
-
-       if (sctx->b.dcc_stats[slot].query_active)
-               vi_separate_dcc_stop_query(sctx,
-                                          sctx->b.dcc_stats[slot].tex);
-
-       for (i = 0; i < ARRAY_SIZE(sctx->b.dcc_stats[slot].ps_stats); i++)
-               if (sctx->b.dcc_stats[slot].ps_stats[i]) {
-                       sctx->b.b.destroy_query(&sctx->b.b,
-                                             sctx->b.dcc_stats[slot].ps_stats[i]);
-                       sctx->b.dcc_stats[slot].ps_stats[i] = NULL;
-               }
-
-       r600_texture_reference(&sctx->b.dcc_stats[slot].tex, NULL);
-}
-
-/**
- * Return the per-context slot where DCC statistics queries for the texture live.
- */
-static unsigned vi_get_context_dcc_stats_index(struct si_context *sctx,
-                                              struct r600_texture *tex)
-{
-       int i, empty_slot = -1;
-
-       /* Remove zombie textures (textures kept alive by this array only). */
-       for (i = 0; i < ARRAY_SIZE(sctx->b.dcc_stats); i++)
-               if (sctx->b.dcc_stats[i].tex &&
-                   sctx->b.dcc_stats[i].tex->resource.b.b.reference.count == 1)
-                       vi_dcc_clean_up_context_slot(sctx, i);
-
-       /* Find the texture. */
-       for (i = 0; i < ARRAY_SIZE(sctx->b.dcc_stats); i++) {
-               /* Return if found. */
-               if (sctx->b.dcc_stats[i].tex == tex) {
-                       sctx->b.dcc_stats[i].last_use_timestamp = os_time_get();
-                       return i;
-               }
-
-               /* Record the first seen empty slot. */
-               if (empty_slot == -1 && !sctx->b.dcc_stats[i].tex)
-                       empty_slot = i;
-       }
-
-       /* Not found. Remove the oldest member to make space in the array. */
-       if (empty_slot == -1) {
-               int oldest_slot = 0;
-
-               /* Find the oldest slot. */
-               for (i = 1; i < ARRAY_SIZE(sctx->b.dcc_stats); i++)
-                       if (sctx->b.dcc_stats[oldest_slot].last_use_timestamp >
-                           sctx->b.dcc_stats[i].last_use_timestamp)
-                               oldest_slot = i;
-
-               /* Clean up the oldest slot. */
-               vi_dcc_clean_up_context_slot(sctx, oldest_slot);
-               empty_slot = oldest_slot;
-       }
-
-       /* Add the texture to the new slot. */
-       r600_texture_reference(&sctx->b.dcc_stats[empty_slot].tex, tex);
-       sctx->b.dcc_stats[empty_slot].last_use_timestamp = os_time_get();
-       return empty_slot;
-}
-
-static struct pipe_query *
-vi_create_resuming_pipestats_query(struct si_context *sctx)
-{
-       struct si_query_hw *query = (struct si_query_hw*)
-               sctx->b.b.create_query(&sctx->b.b, PIPE_QUERY_PIPELINE_STATISTICS, 0);
-
-       query->flags |= SI_QUERY_HW_FLAG_BEGIN_RESUMES;
-       return (struct pipe_query*)query;
-}
-
-/**
- * Called when binding a color buffer.
- */
-void vi_separate_dcc_start_query(struct si_context *sctx,
-                                struct r600_texture *tex)
-{
-       unsigned i = vi_get_context_dcc_stats_index(sctx, tex);
-
-       assert(!sctx->b.dcc_stats[i].query_active);
-
-       if (!sctx->b.dcc_stats[i].ps_stats[0])
-               sctx->b.dcc_stats[i].ps_stats[0] = vi_create_resuming_pipestats_query(sctx);
-
-       /* begin or resume the query */
-       sctx->b.b.begin_query(&sctx->b.b, sctx->b.dcc_stats[i].ps_stats[0]);
-       sctx->b.dcc_stats[i].query_active = true;
-}
-
-/**
- * Called when unbinding a color buffer.
- */
-void vi_separate_dcc_stop_query(struct si_context *sctx,
-                               struct r600_texture *tex)
-{
-       unsigned i = vi_get_context_dcc_stats_index(sctx, tex);
-
-       assert(sctx->b.dcc_stats[i].query_active);
-       assert(sctx->b.dcc_stats[i].ps_stats[0]);
-
-       /* pause or end the query */
-       sctx->b.b.end_query(&sctx->b.b, sctx->b.dcc_stats[i].ps_stats[0]);
-       sctx->b.dcc_stats[i].query_active = false;
-}
-
-static bool vi_should_enable_separate_dcc(struct r600_texture *tex)
-{
-       /* The minimum number of fullscreen draws per frame that is required
-        * to enable DCC. */
-       return tex->ps_draw_ratio + tex->num_slow_clears >= 5;
-}
-
-/* Called by fast clear. */
-void vi_separate_dcc_try_enable(struct si_context *sctx,
-                               struct r600_texture *tex)
-{
-       /* The intent is to use this with shared displayable back buffers,
-        * but it's not strictly limited only to them.
-        */
-       if (!tex->resource.b.is_shared ||
-           !(tex->resource.external_usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH) ||
-           tex->resource.b.b.target != PIPE_TEXTURE_2D ||
-           tex->resource.b.b.last_level > 0 ||
-           !tex->surface.dcc_size)
-               return;
-
-       if (tex->dcc_offset)
-               return; /* already enabled */
-
-       /* Enable the DCC stat gathering. */
-       if (!tex->dcc_gather_statistics) {
-               tex->dcc_gather_statistics = true;
-               vi_separate_dcc_start_query(sctx, tex);
-       }
-
-       if (!vi_should_enable_separate_dcc(tex))
-               return; /* stats show that DCC decompression is too expensive */
-
-       assert(tex->surface.num_dcc_levels);
-       assert(!tex->dcc_separate_buffer);
-
-       si_texture_discard_cmask(sctx->screen, tex);
-
-       /* Get a DCC buffer. */
-       if (tex->last_dcc_separate_buffer) {
-               assert(tex->dcc_gather_statistics);
-               assert(!tex->dcc_separate_buffer);
-               tex->dcc_separate_buffer = tex->last_dcc_separate_buffer;
-               tex->last_dcc_separate_buffer = NULL;
-       } else {
-               tex->dcc_separate_buffer = (struct r600_resource*)
-                       si_aligned_buffer_create(sctx->b.b.screen,
-                                                  SI_RESOURCE_FLAG_UNMAPPABLE,
-                                                  PIPE_USAGE_DEFAULT,
-                                                  tex->surface.dcc_size,
-                                                  tex->surface.dcc_alignment);
-               if (!tex->dcc_separate_buffer)
-                       return;
-       }
-
-       /* dcc_offset is the absolute GPUVM address. */
-       tex->dcc_offset = tex->dcc_separate_buffer->gpu_address;
-
-       /* no need to flag anything since this is called by fast clear that
-        * flags framebuffer state
-        */
-}
-
-/**
- * Called by pipe_context::flush_resource, the place where DCC decompression
- * takes place.
- */
-void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
-                                            struct r600_texture *tex)
-{
-       struct si_context *sctx = (struct si_context*)ctx;
-       struct pipe_query *tmp;
-       unsigned i = vi_get_context_dcc_stats_index(sctx, tex);
-       bool query_active = sctx->b.dcc_stats[i].query_active;
-       bool disable = false;
-
-       if (sctx->b.dcc_stats[i].ps_stats[2]) {
-               union pipe_query_result result;
-
-               /* Read the results. */
-               ctx->get_query_result(ctx, sctx->b.dcc_stats[i].ps_stats[2],
-                                     true, &result);
-               si_query_hw_reset_buffers(sctx,
-                                         (struct si_query_hw*)
-                                         sctx->b.dcc_stats[i].ps_stats[2]);
-
-               /* Compute the approximate number of fullscreen draws. */
-               tex->ps_draw_ratio =
-                       result.pipeline_statistics.ps_invocations /
-                       (tex->resource.b.b.width0 * tex->resource.b.b.height0);
-               sctx->b.last_tex_ps_draw_ratio = tex->ps_draw_ratio;
-
-               disable = tex->dcc_separate_buffer &&
-                         !vi_should_enable_separate_dcc(tex);
-       }
-
-       tex->num_slow_clears = 0;
-
-       /* stop the statistics query for ps_stats[0] */
-       if (query_active)
-               vi_separate_dcc_stop_query(sctx, tex);
-
-       /* Move the queries in the queue by one. */
-       tmp = sctx->b.dcc_stats[i].ps_stats[2];
-       sctx->b.dcc_stats[i].ps_stats[2] = sctx->b.dcc_stats[i].ps_stats[1];
-       sctx->b.dcc_stats[i].ps_stats[1] = sctx->b.dcc_stats[i].ps_stats[0];
-       sctx->b.dcc_stats[i].ps_stats[0] = tmp;
-
-       /* create and start a new query as ps_stats[0] */
-       if (query_active)
-               vi_separate_dcc_start_query(sctx, tex);
-
-       if (disable) {
-               assert(!tex->last_dcc_separate_buffer);
-               tex->last_dcc_separate_buffer = tex->dcc_separate_buffer;
-               tex->dcc_separate_buffer = NULL;
-               tex->dcc_offset = 0;
-               /* no need to flag anything since this is called after
-                * decompression that re-sets framebuffer state
-                */
-       }
-}
-
-static struct pipe_memory_object *
-si_memobj_from_handle(struct pipe_screen *screen,
-                     struct winsys_handle *whandle,
-                     bool dedicated)
-{
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct r600_memory_object *memobj = CALLOC_STRUCT(r600_memory_object);
-       struct pb_buffer *buf = NULL;
-       uint32_t stride, offset;
-
-       if (!memobj)
-               return NULL;
-
-       buf = sscreen->ws->buffer_from_handle(sscreen->ws, whandle,
-                                             &stride, &offset);
-       if (!buf) {
-               free(memobj);
-               return NULL;
-       }
-
-       memobj->b.dedicated = dedicated;
-       memobj->buf = buf;
-       memobj->stride = stride;
-       memobj->offset = offset;
-
-       return (struct pipe_memory_object *)memobj;
-
-}
-
-static void
-si_memobj_destroy(struct pipe_screen *screen,
-                 struct pipe_memory_object *_memobj)
-{
-       struct r600_memory_object *memobj = (struct r600_memory_object *)_memobj;
-
-       pb_reference(&memobj->buf, NULL);
-       free(memobj);
-}
-
-static struct pipe_resource *
-si_texture_from_memobj(struct pipe_screen *screen,
-                      const struct pipe_resource *templ,
-                      struct pipe_memory_object *_memobj,
-                      uint64_t offset)
-{
-       int r;
-       struct si_screen *sscreen = (struct si_screen*)screen;
-       struct r600_memory_object *memobj = (struct r600_memory_object *)_memobj;
-       struct r600_texture *rtex;
-       struct radeon_surf surface = {};
-       struct radeon_bo_metadata metadata = {};
-       enum radeon_surf_mode array_mode;
-       bool is_scanout;
-       struct pb_buffer *buf = NULL;
-
-       if (memobj->b.dedicated) {
-               sscreen->ws->buffer_get_metadata(memobj->buf, &metadata);
-               si_surface_import_metadata(sscreen, &surface, &metadata,
-                                    &array_mode, &is_scanout);
-       } else {
-               /**
-                * The bo metadata is unset for un-dedicated images. So we fall
-                * back to linear. See answer to question 5 of the
-                * VK_KHX_external_memory spec for some details.
-                *
-                * It is possible that this case isn't going to work if the
-                * surface pitch isn't correctly aligned by default.
-                *
-                * In order to support it correctly we require multi-image
-                * metadata to be syncrhonized between radv and radeonsi. The
-                * semantics of associating multiple image metadata to a memory
-                * object on the vulkan export side are not concretely defined
-                * either.
-                *
-                * All the use cases we are aware of at the moment for memory
-                * objects use dedicated allocations. So lets keep the initial
-                * implementation simple.
-                *
-                * A possible alternative is to attempt to reconstruct the
-                * tiling information when the TexParameter TEXTURE_TILING_EXT
-                * is set.
-                */
-               array_mode = RADEON_SURF_MODE_LINEAR_ALIGNED;
-               is_scanout = false;
-
-       }
-
-       r = si_init_surface(sscreen, &surface, templ,
-                             array_mode, memobj->stride,
-                             offset, true, is_scanout,
-                             false, false);
-       if (r)
-               return NULL;
-
-       rtex = si_texture_create_object(screen, templ, memobj->buf, &surface);
-       if (!rtex)
-               return NULL;
-
-       /* r600_texture_create_object doesn't increment refcount of
-        * memobj->buf, so increment it here.
-        */
-       pb_reference(&buf, memobj->buf);
-
-       rtex->resource.b.is_shared = true;
-       rtex->resource.external_usage = PIPE_HANDLE_USAGE_READ_WRITE;
-
-       si_apply_opaque_metadata(sscreen, rtex, &metadata);
-
-       return &rtex->resource.b.b;
-}
-
-static bool si_check_resource_capability(struct pipe_screen *screen,
-                                        struct pipe_resource *resource,
-                                        unsigned bind)
-{
-       struct r600_texture *tex = (struct r600_texture*)resource;
-
-       /* Buffers only support the linear flag. */
-       if (resource->target == PIPE_BUFFER)
-               return (bind & ~PIPE_BIND_LINEAR) == 0;
-
-       if (bind & PIPE_BIND_LINEAR && !tex->surface.is_linear)
-               return false;
-
-       if (bind & PIPE_BIND_SCANOUT && !tex->surface.is_displayable)
-               return false;
-
-       /* TODO: PIPE_BIND_CURSOR - do we care? */
-       return true;
-}
-
-void si_init_screen_texture_functions(struct si_screen *sscreen)
-{
-       sscreen->b.resource_from_handle = si_texture_from_handle;
-       sscreen->b.resource_get_handle = si_texture_get_handle;
-       sscreen->b.resource_from_memobj = si_texture_from_memobj;
-       sscreen->b.memobj_create_from_handle = si_memobj_from_handle;
-       sscreen->b.memobj_destroy = si_memobj_destroy;
-       sscreen->b.check_resource_capability = si_check_resource_capability;
-}
-
-void si_init_context_texture_functions(struct si_context *sctx)
-{
-       sctx->b.b.create_surface = si_create_surface;
-       sctx->b.b.surface_destroy = si_surface_destroy;
-}
index c008fc6f39628f2412925076e7e7296dfa89f8f0..3b1726d17dc006b75888e4d092b33c57c21250d8 100644 (file)
@@ -6,6 +6,7 @@ C_SOURCES := \
        cik_sdma.c \
        driinfo_radeonsi.h \
        si_blit.c \
+       si_buffer.c \
        si_clear.c \
        si_compute.c \
        si_compute.h \
@@ -42,4 +43,5 @@ C_SOURCES := \
        si_state_viewport.c \
        si_state.h \
        si_test_dma.c \
+       si_texture.c \
        si_uvd.c
diff --git a/src/gallium/drivers/radeonsi/si_buffer.c b/src/gallium/drivers/radeonsi/si_buffer.c
new file mode 100644 (file)
index 0000000..0af97f4
--- /dev/null
@@ -0,0 +1,760 @@
+/*
+ * Copyright 2013 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "radeonsi/si_pipe.h"
+#include "util/u_memory.h"
+#include "util/u_upload_mgr.h"
+#include <inttypes.h>
+#include <stdio.h>
+
+bool si_rings_is_buffer_referenced(struct si_context *sctx,
+                                  struct pb_buffer *buf,
+                                  enum radeon_bo_usage usage)
+{
+       if (sctx->b.ws->cs_is_buffer_referenced(sctx->b.gfx_cs, buf, usage)) {
+               return true;
+       }
+       if (radeon_emitted(sctx->b.dma_cs, 0) &&
+           sctx->b.ws->cs_is_buffer_referenced(sctx->b.dma_cs, buf, usage)) {
+               return true;
+       }
+       return false;
+}
+
+void *si_buffer_map_sync_with_rings(struct si_context *sctx,
+                                   struct r600_resource *resource,
+                                   unsigned usage)
+{
+       enum radeon_bo_usage rusage = RADEON_USAGE_READWRITE;
+       bool busy = false;
+
+       assert(!(resource->flags & RADEON_FLAG_SPARSE));
+
+       if (usage & PIPE_TRANSFER_UNSYNCHRONIZED) {
+               return sctx->b.ws->buffer_map(resource->buf, NULL, usage);
+       }
+
+       if (!(usage & PIPE_TRANSFER_WRITE)) {
+               /* have to wait for the last write */
+               rusage = RADEON_USAGE_WRITE;
+       }
+
+       if (radeon_emitted(sctx->b.gfx_cs, sctx->b.initial_gfx_cs_size) &&
+           sctx->b.ws->cs_is_buffer_referenced(sctx->b.gfx_cs,
+                                               resource->buf, rusage)) {
+               if (usage & PIPE_TRANSFER_DONTBLOCK) {
+                       si_flush_gfx_cs(sctx, PIPE_FLUSH_ASYNC, NULL);
+                       return NULL;
+               } else {
+                       si_flush_gfx_cs(sctx, 0, NULL);
+                       busy = true;
+               }
+       }
+       if (radeon_emitted(sctx->b.dma_cs, 0) &&
+           sctx->b.ws->cs_is_buffer_referenced(sctx->b.dma_cs,
+                                               resource->buf, rusage)) {
+               if (usage & PIPE_TRANSFER_DONTBLOCK) {
+                       si_flush_dma_cs(sctx, PIPE_FLUSH_ASYNC, NULL);
+                       return NULL;
+               } else {
+                       si_flush_dma_cs(sctx, 0, NULL);
+                       busy = true;
+               }
+       }
+
+       if (busy || !sctx->b.ws->buffer_wait(resource->buf, 0, rusage)) {
+               if (usage & PIPE_TRANSFER_DONTBLOCK) {
+                       return NULL;
+               } else {
+                       /* We will be wait for the GPU. Wait for any offloaded
+                        * CS flush to complete to avoid busy-waiting in the winsys. */
+                       sctx->b.ws->cs_sync_flush(sctx->b.gfx_cs);
+                       if (sctx->b.dma_cs)
+                               sctx->b.ws->cs_sync_flush(sctx->b.dma_cs);
+               }
+       }
+
+       /* Setting the CS to NULL will prevent doing checks we have done already. */
+       return sctx->b.ws->buffer_map(resource->buf, NULL, usage);
+}
+
+void si_init_resource_fields(struct si_screen *sscreen,
+                            struct r600_resource *res,
+                            uint64_t size, unsigned alignment)
+{
+       struct r600_texture *rtex = (struct r600_texture*)res;
+
+       res->bo_size = size;
+       res->bo_alignment = alignment;
+       res->flags = 0;
+       res->texture_handle_allocated = false;
+       res->image_handle_allocated = false;
+
+       switch (res->b.b.usage) {
+       case PIPE_USAGE_STREAM:
+               res->flags = RADEON_FLAG_GTT_WC;
+               /* fall through */
+       case PIPE_USAGE_STAGING:
+               /* Transfers are likely to occur more often with these
+                * resources. */
+               res->domains = RADEON_DOMAIN_GTT;
+               break;
+       case PIPE_USAGE_DYNAMIC:
+               /* Older kernels didn't always flush the HDP cache before
+                * CS execution
+                */
+               if (sscreen->info.drm_major == 2 &&
+                   sscreen->info.drm_minor < 40) {
+                       res->domains = RADEON_DOMAIN_GTT;
+                       res->flags |= RADEON_FLAG_GTT_WC;
+                       break;
+               }
+               /* fall through */
+       case PIPE_USAGE_DEFAULT:
+       case PIPE_USAGE_IMMUTABLE:
+       default:
+               /* Not listing GTT here improves performance in some
+                * apps. */
+               res->domains = RADEON_DOMAIN_VRAM;
+               res->flags |= RADEON_FLAG_GTT_WC;
+               break;
+       }
+
+       if (res->b.b.target == PIPE_BUFFER &&
+           res->b.b.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
+                             PIPE_RESOURCE_FLAG_MAP_COHERENT)) {
+               /* Use GTT for all persistent mappings with older
+                * kernels, because they didn't always flush the HDP
+                * cache before CS execution.
+                *
+                * Write-combined CPU mappings are fine, the kernel
+                * ensures all CPU writes finish before the GPU
+                * executes a command stream.
+                */
+               if (sscreen->info.drm_major == 2 &&
+                   sscreen->info.drm_minor < 40)
+                       res->domains = RADEON_DOMAIN_GTT;
+       }
+
+       /* Tiled textures are unmappable. Always put them in VRAM. */
+       if ((res->b.b.target != PIPE_BUFFER && !rtex->surface.is_linear) ||
+           res->b.b.flags & SI_RESOURCE_FLAG_UNMAPPABLE) {
+               res->domains = RADEON_DOMAIN_VRAM;
+               res->flags |= RADEON_FLAG_NO_CPU_ACCESS |
+                        RADEON_FLAG_GTT_WC;
+       }
+
+       /* Displayable and shareable surfaces are not suballocated. */
+       if (res->b.b.bind & (PIPE_BIND_SHARED | PIPE_BIND_SCANOUT))
+               res->flags |= RADEON_FLAG_NO_SUBALLOC; /* shareable */
+       else
+               res->flags |= RADEON_FLAG_NO_INTERPROCESS_SHARING;
+
+       if (sscreen->debug_flags & DBG(NO_WC))
+               res->flags &= ~RADEON_FLAG_GTT_WC;
+
+       if (res->b.b.flags & SI_RESOURCE_FLAG_READ_ONLY)
+               res->flags |= RADEON_FLAG_READ_ONLY;
+
+       if (res->b.b.flags & SI_RESOURCE_FLAG_32BIT)
+               res->flags |= RADEON_FLAG_32BIT;
+
+       /* Set expected VRAM and GART usage for the buffer. */
+       res->vram_usage = 0;
+       res->gart_usage = 0;
+       res->max_forced_staging_uploads = 0;
+       res->b.max_forced_staging_uploads = 0;
+
+       if (res->domains & RADEON_DOMAIN_VRAM) {
+               res->vram_usage = size;
+
+               res->max_forced_staging_uploads =
+               res->b.max_forced_staging_uploads =
+                       sscreen->info.has_dedicated_vram &&
+                       size >= sscreen->info.vram_vis_size / 4 ? 1 : 0;
+       } else if (res->domains & RADEON_DOMAIN_GTT) {
+               res->gart_usage = size;
+       }
+}
+
+bool si_alloc_resource(struct si_screen *sscreen,
+                      struct r600_resource *res)
+{
+       struct pb_buffer *old_buf, *new_buf;
+
+       /* Allocate a new resource. */
+       new_buf = sscreen->ws->buffer_create(sscreen->ws, res->bo_size,
+                                            res->bo_alignment,
+                                            res->domains, res->flags);
+       if (!new_buf) {
+               return false;
+       }
+
+       /* Replace the pointer such that if res->buf wasn't NULL, it won't be
+        * NULL. This should prevent crashes with multiple contexts using
+        * the same buffer where one of the contexts invalidates it while
+        * the others are using it. */
+       old_buf = res->buf;
+       res->buf = new_buf; /* should be atomic */
+       res->gpu_address = sscreen->ws->buffer_get_virtual_address(res->buf);
+
+       if (res->flags & RADEON_FLAG_32BIT) {
+               uint64_t start = res->gpu_address;
+               uint64_t last = start + res->bo_size - 1;
+               (void)start;
+               (void)last;
+
+               assert((start >> 32) == sscreen->info.address32_hi);
+               assert((last >> 32) == sscreen->info.address32_hi);
+       }
+
+       pb_reference(&old_buf, NULL);
+
+       util_range_set_empty(&res->valid_buffer_range);
+       res->TC_L2_dirty = false;
+
+       /* Print debug information. */
+       if (sscreen->debug_flags & DBG(VM) && res->b.b.target == PIPE_BUFFER) {
+               fprintf(stderr, "VM start=0x%"PRIX64"  end=0x%"PRIX64" | Buffer %"PRIu64" bytes\n",
+                       res->gpu_address, res->gpu_address + res->buf->size,
+                       res->buf->size);
+       }
+       return true;
+}
+
+static void si_buffer_destroy(struct pipe_screen *screen,
+                             struct pipe_resource *buf)
+{
+       struct r600_resource *rbuffer = r600_resource(buf);
+
+       threaded_resource_deinit(buf);
+       util_range_destroy(&rbuffer->valid_buffer_range);
+       pb_reference(&rbuffer->buf, NULL);
+       FREE(rbuffer);
+}
+
+/* Reallocate the buffer a update all resource bindings where the buffer is
+ * bound.
+ *
+ * This is used to avoid CPU-GPU synchronizations, because it makes the buffer
+ * idle by discarding its contents.
+ */
+static bool
+si_invalidate_buffer(struct si_context *sctx,
+                    struct r600_resource *rbuffer)
+{
+       /* Shared buffers can't be reallocated. */
+       if (rbuffer->b.is_shared)
+               return false;
+
+       /* Sparse buffers can't be reallocated. */
+       if (rbuffer->flags & RADEON_FLAG_SPARSE)
+               return false;
+
+       /* In AMD_pinned_memory, the user pointer association only gets
+        * broken when the buffer is explicitly re-allocated.
+        */
+       if (rbuffer->b.is_user_ptr)
+               return false;
+
+       /* Check if mapping this buffer would cause waiting for the GPU. */
+       if (si_rings_is_buffer_referenced(sctx, rbuffer->buf, RADEON_USAGE_READWRITE) ||
+           !sctx->b.ws->buffer_wait(rbuffer->buf, 0, RADEON_USAGE_READWRITE)) {
+               uint64_t old_va = rbuffer->gpu_address;
+
+               /* Reallocate the buffer in the same pipe_resource. */
+               si_alloc_resource(sctx->screen, rbuffer);
+               si_rebind_buffer(sctx, &rbuffer->b.b, old_va);
+       } else {
+               util_range_set_empty(&rbuffer->valid_buffer_range);
+       }
+
+       return true;
+}
+
+/* Replace the storage of dst with src. */
+void si_replace_buffer_storage(struct pipe_context *ctx,
+                                struct pipe_resource *dst,
+                                struct pipe_resource *src)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_resource *rdst = r600_resource(dst);
+       struct r600_resource *rsrc = r600_resource(src);
+       uint64_t old_gpu_address = rdst->gpu_address;
+
+       pb_reference(&rdst->buf, rsrc->buf);
+       rdst->gpu_address = rsrc->gpu_address;
+       rdst->b.b.bind = rsrc->b.b.bind;
+       rdst->b.max_forced_staging_uploads = rsrc->b.max_forced_staging_uploads;
+       rdst->max_forced_staging_uploads = rsrc->max_forced_staging_uploads;
+       rdst->flags = rsrc->flags;
+
+       assert(rdst->vram_usage == rsrc->vram_usage);
+       assert(rdst->gart_usage == rsrc->gart_usage);
+       assert(rdst->bo_size == rsrc->bo_size);
+       assert(rdst->bo_alignment == rsrc->bo_alignment);
+       assert(rdst->domains == rsrc->domains);
+
+       si_rebind_buffer(sctx, dst, old_gpu_address);
+}
+
+static void si_invalidate_resource(struct pipe_context *ctx,
+                                  struct pipe_resource *resource)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_resource *rbuffer = r600_resource(resource);
+
+       /* We currently only do anyting here for buffers */
+       if (resource->target == PIPE_BUFFER)
+               (void)si_invalidate_buffer(sctx, rbuffer);
+}
+
+static void *si_buffer_get_transfer(struct pipe_context *ctx,
+                                   struct pipe_resource *resource,
+                                   unsigned usage,
+                                   const struct pipe_box *box,
+                                   struct pipe_transfer **ptransfer,
+                                   void *data, struct r600_resource *staging,
+                                   unsigned offset)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_transfer *transfer;
+
+       if (usage & TC_TRANSFER_MAP_THREADED_UNSYNC)
+               transfer = slab_alloc(&sctx->b.pool_transfers_unsync);
+       else
+               transfer = slab_alloc(&sctx->b.pool_transfers);
+
+       transfer->b.b.resource = NULL;
+       pipe_resource_reference(&transfer->b.b.resource, resource);
+       transfer->b.b.level = 0;
+       transfer->b.b.usage = usage;
+       transfer->b.b.box = *box;
+       transfer->b.b.stride = 0;
+       transfer->b.b.layer_stride = 0;
+       transfer->b.staging = NULL;
+       transfer->offset = offset;
+       transfer->staging = staging;
+       *ptransfer = &transfer->b.b;
+       return data;
+}
+
+static void *si_buffer_transfer_map(struct pipe_context *ctx,
+                                   struct pipe_resource *resource,
+                                   unsigned level,
+                                   unsigned usage,
+                                   const struct pipe_box *box,
+                                   struct pipe_transfer **ptransfer)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_resource *rbuffer = r600_resource(resource);
+       uint8_t *data;
+
+       assert(box->x + box->width <= resource->width0);
+
+       /* From GL_AMD_pinned_memory issues:
+        *
+        *     4) Is glMapBuffer on a shared buffer guaranteed to return the
+        *        same system address which was specified at creation time?
+        *
+        *        RESOLVED: NO. The GL implementation might return a different
+        *        virtual mapping of that memory, although the same physical
+        *        page will be used.
+        *
+        * So don't ever use staging buffers.
+        */
+       if (rbuffer->b.is_user_ptr)
+               usage |= PIPE_TRANSFER_PERSISTENT;
+
+       /* See if the buffer range being mapped has never been initialized,
+        * in which case it can be mapped unsynchronized. */
+       if (!(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
+                      TC_TRANSFER_MAP_NO_INFER_UNSYNCHRONIZED)) &&
+           usage & PIPE_TRANSFER_WRITE &&
+           !rbuffer->b.is_shared &&
+           !util_ranges_intersect(&rbuffer->valid_buffer_range, box->x, box->x + box->width)) {
+               usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
+       }
+
+       /* If discarding the entire range, discard the whole resource instead. */
+       if (usage & PIPE_TRANSFER_DISCARD_RANGE &&
+           box->x == 0 && box->width == resource->width0) {
+               usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
+       }
+
+       /* If a buffer in VRAM is too large and the range is discarded, don't
+        * map it directly. This makes sure that the buffer stays in VRAM.
+        */
+       bool force_discard_range = false;
+       if (usage & (PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE |
+                    PIPE_TRANSFER_DISCARD_RANGE) &&
+           !(usage & PIPE_TRANSFER_PERSISTENT) &&
+           /* Try not to decrement the counter if it's not positive. Still racy,
+            * but it makes it harder to wrap the counter from INT_MIN to INT_MAX. */
+           rbuffer->max_forced_staging_uploads > 0 &&
+           p_atomic_dec_return(&rbuffer->max_forced_staging_uploads) >= 0) {
+               usage &= ~(PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE |
+                          PIPE_TRANSFER_UNSYNCHRONIZED);
+               usage |= PIPE_TRANSFER_DISCARD_RANGE;
+               force_discard_range = true;
+       }
+
+       if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
+           !(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
+                      TC_TRANSFER_MAP_NO_INVALIDATE))) {
+               assert(usage & PIPE_TRANSFER_WRITE);
+
+               if (si_invalidate_buffer(sctx, rbuffer)) {
+                       /* At this point, the buffer is always idle. */
+                       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
+               } else {
+                       /* Fall back to a temporary buffer. */
+                       usage |= PIPE_TRANSFER_DISCARD_RANGE;
+               }
+       }
+
+       if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
+           ((!(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
+                        PIPE_TRANSFER_PERSISTENT))) ||
+            (rbuffer->flags & RADEON_FLAG_SPARSE))) {
+               assert(usage & PIPE_TRANSFER_WRITE);
+
+               /* Check if mapping this buffer would cause waiting for the GPU.
+                */
+               if (rbuffer->flags & RADEON_FLAG_SPARSE ||
+                   force_discard_range ||
+                   si_rings_is_buffer_referenced(sctx, rbuffer->buf, RADEON_USAGE_READWRITE) ||
+                   !sctx->b.ws->buffer_wait(rbuffer->buf, 0, RADEON_USAGE_READWRITE)) {
+                       /* Do a wait-free write-only transfer using a temporary buffer. */
+                       unsigned offset;
+                       struct r600_resource *staging = NULL;
+
+                       u_upload_alloc(ctx->stream_uploader, 0,
+                                       box->width + (box->x % SI_MAP_BUFFER_ALIGNMENT),
+                                      sctx->screen->info.tcc_cache_line_size,
+                                      &offset, (struct pipe_resource**)&staging,
+                                       (void**)&data);
+
+                       if (staging) {
+                               data += box->x % SI_MAP_BUFFER_ALIGNMENT;
+                               return si_buffer_get_transfer(ctx, resource, usage, box,
+                                                               ptransfer, data, staging, offset);
+                       } else if (rbuffer->flags & RADEON_FLAG_SPARSE) {
+                               return NULL;
+                       }
+               } else {
+                       /* At this point, the buffer is always idle (we checked it above). */
+                       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
+               }
+       }
+       /* Use a staging buffer in cached GTT for reads. */
+       else if (((usage & PIPE_TRANSFER_READ) &&
+                 !(usage & PIPE_TRANSFER_PERSISTENT) &&
+                 (rbuffer->domains & RADEON_DOMAIN_VRAM ||
+                  rbuffer->flags & RADEON_FLAG_GTT_WC)) ||
+                (rbuffer->flags & RADEON_FLAG_SPARSE)) {
+               struct r600_resource *staging;
+
+               assert(!(usage & TC_TRANSFER_MAP_THREADED_UNSYNC));
+               staging = (struct r600_resource*) pipe_buffer_create(
+                               ctx->screen, 0, PIPE_USAGE_STAGING,
+                               box->width + (box->x % SI_MAP_BUFFER_ALIGNMENT));
+               if (staging) {
+                       /* Copy the VRAM buffer to the staging buffer. */
+                       sctx->b.dma_copy(ctx, &staging->b.b, 0,
+                                      box->x % SI_MAP_BUFFER_ALIGNMENT,
+                                      0, 0, resource, 0, box);
+
+                       data = si_buffer_map_sync_with_rings(sctx, staging,
+                                                            usage & ~PIPE_TRANSFER_UNSYNCHRONIZED);
+                       if (!data) {
+                               r600_resource_reference(&staging, NULL);
+                               return NULL;
+                       }
+                       data += box->x % SI_MAP_BUFFER_ALIGNMENT;
+
+                       return si_buffer_get_transfer(ctx, resource, usage, box,
+                                                       ptransfer, data, staging, 0);
+               } else if (rbuffer->flags & RADEON_FLAG_SPARSE) {
+                       return NULL;
+               }
+       }
+
+       data = si_buffer_map_sync_with_rings(sctx, rbuffer, usage);
+       if (!data) {
+               return NULL;
+       }
+       data += box->x;
+
+       return si_buffer_get_transfer(ctx, resource, usage, box,
+                                       ptransfer, data, NULL, 0);
+}
+
+static void si_buffer_do_flush_region(struct pipe_context *ctx,
+                                     struct pipe_transfer *transfer,
+                                     const struct pipe_box *box)
+{
+       struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
+       struct r600_resource *rbuffer = r600_resource(transfer->resource);
+
+       if (rtransfer->staging) {
+               struct pipe_resource *dst, *src;
+               unsigned soffset;
+               struct pipe_box dma_box;
+
+               dst = transfer->resource;
+               src = &rtransfer->staging->b.b;
+               soffset = rtransfer->offset + box->x % SI_MAP_BUFFER_ALIGNMENT;
+
+               u_box_1d(soffset, box->width, &dma_box);
+
+               /* Copy the staging buffer into the original one. */
+               ctx->resource_copy_region(ctx, dst, 0, box->x, 0, 0, src, 0, &dma_box);
+       }
+
+       util_range_add(&rbuffer->valid_buffer_range, box->x,
+                      box->x + box->width);
+}
+
+static void si_buffer_flush_region(struct pipe_context *ctx,
+                                  struct pipe_transfer *transfer,
+                                  const struct pipe_box *rel_box)
+{
+       unsigned required_usage = PIPE_TRANSFER_WRITE |
+                                 PIPE_TRANSFER_FLUSH_EXPLICIT;
+
+       if ((transfer->usage & required_usage) == required_usage) {
+               struct pipe_box box;
+
+               u_box_1d(transfer->box.x + rel_box->x, rel_box->width, &box);
+               si_buffer_do_flush_region(ctx, transfer, &box);
+       }
+}
+
+static void si_buffer_transfer_unmap(struct pipe_context *ctx,
+                                    struct pipe_transfer *transfer)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
+
+       if (transfer->usage & PIPE_TRANSFER_WRITE &&
+           !(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT))
+               si_buffer_do_flush_region(ctx, transfer, &transfer->box);
+
+       r600_resource_reference(&rtransfer->staging, NULL);
+       assert(rtransfer->b.staging == NULL); /* for threaded context only */
+       pipe_resource_reference(&transfer->resource, NULL);
+
+       /* Don't use pool_transfers_unsync. We are always in the driver
+        * thread. */
+       slab_free(&sctx->b.pool_transfers, transfer);
+}
+
+static void si_buffer_subdata(struct pipe_context *ctx,
+                             struct pipe_resource *buffer,
+                             unsigned usage, unsigned offset,
+                             unsigned size, const void *data)
+{
+       struct pipe_transfer *transfer = NULL;
+       struct pipe_box box;
+       uint8_t *map = NULL;
+
+       u_box_1d(offset, size, &box);
+       map = si_buffer_transfer_map(ctx, buffer, 0,
+                                      PIPE_TRANSFER_WRITE |
+                                      PIPE_TRANSFER_DISCARD_RANGE |
+                                      usage,
+                                      &box, &transfer);
+       if (!map)
+               return;
+
+       memcpy(map, data, size);
+       si_buffer_transfer_unmap(ctx, transfer);
+}
+
+static const struct u_resource_vtbl si_buffer_vtbl =
+{
+       NULL,                           /* get_handle */
+       si_buffer_destroy,              /* resource_destroy */
+       si_buffer_transfer_map, /* transfer_map */
+       si_buffer_flush_region, /* transfer_flush_region */
+       si_buffer_transfer_unmap,       /* transfer_unmap */
+};
+
+static struct r600_resource *
+si_alloc_buffer_struct(struct pipe_screen *screen,
+                      const struct pipe_resource *templ)
+{
+       struct r600_resource *rbuffer;
+
+       rbuffer = MALLOC_STRUCT(r600_resource);
+
+       rbuffer->b.b = *templ;
+       rbuffer->b.b.next = NULL;
+       pipe_reference_init(&rbuffer->b.b.reference, 1);
+       rbuffer->b.b.screen = screen;
+
+       rbuffer->b.vtbl = &si_buffer_vtbl;
+       threaded_resource_init(&rbuffer->b.b);
+
+       rbuffer->buf = NULL;
+       rbuffer->bind_history = 0;
+       rbuffer->TC_L2_dirty = false;
+       util_range_init(&rbuffer->valid_buffer_range);
+       return rbuffer;
+}
+
+static struct pipe_resource *si_buffer_create(struct pipe_screen *screen,
+                                             const struct pipe_resource *templ,
+                                             unsigned alignment)
+{
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct r600_resource *rbuffer = si_alloc_buffer_struct(screen, templ);
+
+       if (templ->flags & PIPE_RESOURCE_FLAG_SPARSE)
+               rbuffer->b.b.flags |= SI_RESOURCE_FLAG_UNMAPPABLE;
+
+       si_init_resource_fields(sscreen, rbuffer, templ->width0, alignment);
+
+       if (templ->flags & PIPE_RESOURCE_FLAG_SPARSE)
+               rbuffer->flags |= RADEON_FLAG_SPARSE;
+
+       if (!si_alloc_resource(sscreen, rbuffer)) {
+               FREE(rbuffer);
+               return NULL;
+       }
+       return &rbuffer->b.b;
+}
+
+struct pipe_resource *si_aligned_buffer_create(struct pipe_screen *screen,
+                                              unsigned flags,
+                                              unsigned usage,
+                                              unsigned size,
+                                              unsigned alignment)
+{
+       struct pipe_resource buffer;
+
+       memset(&buffer, 0, sizeof buffer);
+       buffer.target = PIPE_BUFFER;
+       buffer.format = PIPE_FORMAT_R8_UNORM;
+       buffer.bind = 0;
+       buffer.usage = usage;
+       buffer.flags = flags;
+       buffer.width0 = size;
+       buffer.height0 = 1;
+       buffer.depth0 = 1;
+       buffer.array_size = 1;
+       return si_buffer_create(screen, &buffer, alignment);
+}
+
+static struct pipe_resource *
+si_buffer_from_user_memory(struct pipe_screen *screen,
+                          const struct pipe_resource *templ,
+                          void *user_memory)
+{
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct radeon_winsys *ws = sscreen->ws;
+       struct r600_resource *rbuffer = si_alloc_buffer_struct(screen, templ);
+
+       rbuffer->domains = RADEON_DOMAIN_GTT;
+       rbuffer->flags = 0;
+       rbuffer->b.is_user_ptr = true;
+       util_range_add(&rbuffer->valid_buffer_range, 0, templ->width0);
+       util_range_add(&rbuffer->b.valid_buffer_range, 0, templ->width0);
+
+       /* Convert a user pointer to a buffer. */
+       rbuffer->buf = ws->buffer_from_ptr(ws, user_memory, templ->width0);
+       if (!rbuffer->buf) {
+               FREE(rbuffer);
+               return NULL;
+       }
+
+       rbuffer->gpu_address = ws->buffer_get_virtual_address(rbuffer->buf);
+       rbuffer->vram_usage = 0;
+       rbuffer->gart_usage = templ->width0;
+
+       return &rbuffer->b.b;
+}
+
+static struct pipe_resource *si_resource_create(struct pipe_screen *screen,
+                                               const struct pipe_resource *templ)
+{
+       if (templ->target == PIPE_BUFFER) {
+               return si_buffer_create(screen, templ, 256);
+       } else {
+               return si_texture_create(screen, templ);
+       }
+}
+
+static bool si_resource_commit(struct pipe_context *pctx,
+                              struct pipe_resource *resource,
+                              unsigned level, struct pipe_box *box,
+                              bool commit)
+{
+       struct si_context *ctx = (struct si_context *)pctx;
+       struct r600_resource *res = r600_resource(resource);
+
+       /*
+        * Since buffer commitment changes cannot be pipelined, we need to
+        * (a) flush any pending commands that refer to the buffer we're about
+        *     to change, and
+        * (b) wait for threaded submit to finish, including those that were
+        *     triggered by some other, earlier operation.
+        */
+       if (radeon_emitted(ctx->b.gfx_cs, ctx->b.initial_gfx_cs_size) &&
+           ctx->b.ws->cs_is_buffer_referenced(ctx->b.gfx_cs,
+                                              res->buf, RADEON_USAGE_READWRITE)) {
+               si_flush_gfx_cs(ctx, PIPE_FLUSH_ASYNC, NULL);
+       }
+       if (radeon_emitted(ctx->b.dma_cs, 0) &&
+           ctx->b.ws->cs_is_buffer_referenced(ctx->b.dma_cs,
+                                              res->buf, RADEON_USAGE_READWRITE)) {
+               si_flush_dma_cs(ctx, PIPE_FLUSH_ASYNC, NULL);
+       }
+
+       ctx->b.ws->cs_sync_flush(ctx->b.dma_cs);
+       ctx->b.ws->cs_sync_flush(ctx->b.gfx_cs);
+
+       assert(resource->target == PIPE_BUFFER);
+
+       return ctx->b.ws->buffer_commit(res->buf, box->x, box->width, commit);
+}
+
+void si_init_screen_buffer_functions(struct si_screen *sscreen)
+{
+       sscreen->b.resource_create = si_resource_create;
+       sscreen->b.resource_destroy = u_resource_destroy_vtbl;
+       sscreen->b.resource_from_user_memory = si_buffer_from_user_memory;
+}
+
+void si_init_buffer_functions(struct si_context *sctx)
+{
+       sctx->b.b.invalidate_resource = si_invalidate_resource;
+       sctx->b.b.transfer_map = u_transfer_map_vtbl;
+       sctx->b.b.transfer_flush_region = u_transfer_flush_region_vtbl;
+       sctx->b.b.transfer_unmap = u_transfer_unmap_vtbl;
+       sctx->b.b.texture_subdata = u_default_texture_subdata;
+       sctx->b.b.buffer_subdata = si_buffer_subdata;
+       sctx->b.b.resource_commit = si_resource_commit;
+}
index 7c1214542bdd4dbedc48f4bec67760c7bfd83582..29ee25abf566e7a74cfa887b7cd1e40a19a5ade3 100644 (file)
@@ -746,6 +746,29 @@ void si_blit_decompress_depth(struct pipe_context *ctx,
                              unsigned first_layer, unsigned last_layer,
                              unsigned first_sample, unsigned last_sample);
 
+/* si_buffer.c */
+bool si_rings_is_buffer_referenced(struct si_context *sctx,
+                                  struct pb_buffer *buf,
+                                  enum radeon_bo_usage usage);
+void *si_buffer_map_sync_with_rings(struct si_context *sctx,
+                                   struct r600_resource *resource,
+                                   unsigned usage);
+void si_init_resource_fields(struct si_screen *sscreen,
+                            struct r600_resource *res,
+                            uint64_t size, unsigned alignment);
+bool si_alloc_resource(struct si_screen *sscreen,
+                      struct r600_resource *res);
+struct pipe_resource *si_aligned_buffer_create(struct pipe_screen *screen,
+                                              unsigned flags,
+                                              unsigned usage,
+                                              unsigned size,
+                                              unsigned alignment);
+void si_replace_buffer_storage(struct pipe_context *ctx,
+                              struct pipe_resource *dst,
+                              struct pipe_resource *src);
+void si_init_screen_buffer_functions(struct si_screen *sscreen);
+void si_init_buffer_functions(struct si_context *sctx);
+
 /* si_clear.c */
 void vi_dcc_clear_level(struct si_context *sctx,
                        struct r600_texture *rtex,
@@ -866,6 +889,60 @@ struct pipe_video_buffer *si_video_buffer_create(struct pipe_context *pipe,
 void si_update_vs_viewport_state(struct si_context *ctx);
 void si_init_viewport_functions(struct si_context *ctx);
 
+/* r600_texture.c */
+bool si_prepare_for_dma_blit(struct si_context *sctx,
+                            struct r600_texture *rdst,
+                            unsigned dst_level, unsigned dstx,
+                            unsigned dsty, unsigned dstz,
+                            struct r600_texture *rsrc,
+                            unsigned src_level,
+                            const struct pipe_box *src_box);
+void si_texture_get_fmask_info(struct si_screen *sscreen,
+                              struct r600_texture *rtex,
+                              unsigned nr_samples,
+                              struct r600_fmask_info *out);
+void si_texture_get_cmask_info(struct si_screen *sscreen,
+                              struct r600_texture *rtex,
+                              struct r600_cmask_info *out);
+void si_eliminate_fast_color_clear(struct si_context *sctx,
+                                  struct r600_texture *rtex);
+void si_texture_discard_cmask(struct si_screen *sscreen,
+                             struct r600_texture *rtex);
+bool si_init_flushed_depth_texture(struct pipe_context *ctx,
+                                  struct pipe_resource *texture,
+                                  struct r600_texture **staging);
+void si_print_texture_info(struct si_screen *sscreen,
+                          struct r600_texture *rtex, struct u_log_context *log);
+struct pipe_resource *si_texture_create(struct pipe_screen *screen,
+                                       const struct pipe_resource *templ);
+bool vi_dcc_formats_compatible(enum pipe_format format1,
+                              enum pipe_format format2);
+bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,
+                                    unsigned level,
+                                    enum pipe_format view_format);
+void vi_disable_dcc_if_incompatible_format(struct si_context *sctx,
+                                          struct pipe_resource *tex,
+                                          unsigned level,
+                                          enum pipe_format view_format);
+struct pipe_surface *si_create_surface_custom(struct pipe_context *pipe,
+                                             struct pipe_resource *texture,
+                                             const struct pipe_surface *templ,
+                                             unsigned width0, unsigned height0,
+                                             unsigned width, unsigned height);
+unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap);
+void vi_separate_dcc_try_enable(struct si_context *sctx,
+                               struct r600_texture *tex);
+void vi_separate_dcc_start_query(struct si_context *sctx,
+                                struct r600_texture *tex);
+void vi_separate_dcc_stop_query(struct si_context *sctx,
+                               struct r600_texture *tex);
+void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
+                                            struct r600_texture *tex);
+bool si_texture_disable_dcc(struct si_context *sctx,
+                           struct r600_texture *rtex);
+void si_init_screen_texture_functions(struct si_screen *sscreen);
+void si_init_context_texture_functions(struct si_context *sctx);
+
 
 /*
  * common helpers
diff --git a/src/gallium/drivers/radeonsi/si_texture.c b/src/gallium/drivers/radeonsi/si_texture.c
new file mode 100644 (file)
index 0000000..77117ea
--- /dev/null
@@ -0,0 +1,2499 @@
+/*
+ * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "radeonsi/si_pipe.h"
+#include "radeonsi/si_query.h"
+#include "util/u_format.h"
+#include "util/u_log.h"
+#include "util/u_memory.h"
+#include "util/u_pack_color.h"
+#include "util/u_resource.h"
+#include "util/u_surface.h"
+#include "util/os_time.h"
+#include <errno.h>
+#include <inttypes.h>
+#include "state_tracker/drm_driver.h"
+#include "amd/common/sid.h"
+
+static enum radeon_surf_mode
+si_choose_tiling(struct si_screen *sscreen,
+                const struct pipe_resource *templ);
+
+
+bool si_prepare_for_dma_blit(struct si_context *sctx,
+                            struct r600_texture *rdst,
+                            unsigned dst_level, unsigned dstx,
+                            unsigned dsty, unsigned dstz,
+                            struct r600_texture *rsrc,
+                            unsigned src_level,
+                            const struct pipe_box *src_box)
+{
+       if (!sctx->b.dma_cs)
+               return false;
+
+       if (rdst->surface.bpe != rsrc->surface.bpe)
+               return false;
+
+       /* MSAA: Blits don't exist in the real world. */
+       if (rsrc->resource.b.b.nr_samples > 1 ||
+           rdst->resource.b.b.nr_samples > 1)
+               return false;
+
+       /* Depth-stencil surfaces:
+        *   When dst is linear, the DB->CB copy preserves HTILE.
+        *   When dst is tiled, the 3D path must be used to update HTILE.
+        */
+       if (rsrc->is_depth || rdst->is_depth)
+               return false;
+
+       /* DCC as:
+        *   src: Use the 3D path. DCC decompression is expensive.
+        *   dst: Use the 3D path to compress the pixels with DCC.
+        */
+       if (vi_dcc_enabled(rsrc, src_level) ||
+           vi_dcc_enabled(rdst, dst_level))
+               return false;
+
+       /* CMASK as:
+        *   src: Both texture and SDMA paths need decompression. Use SDMA.
+        *   dst: If overwriting the whole texture, discard CMASK and use
+        *        SDMA. Otherwise, use the 3D path.
+        */
+       if (rdst->cmask.size && rdst->dirty_level_mask & (1 << dst_level)) {
+               /* The CMASK clear is only enabled for the first level. */
+               assert(dst_level == 0);
+               if (!util_texrange_covers_whole_level(&rdst->resource.b.b, dst_level,
+                                                     dstx, dsty, dstz, src_box->width,
+                                                     src_box->height, src_box->depth))
+                       return false;
+
+               si_texture_discard_cmask(sctx->screen, rdst);
+       }
+
+       /* All requirements are met. Prepare textures for SDMA. */
+       if (rsrc->cmask.size && rsrc->dirty_level_mask & (1 << src_level))
+               sctx->b.b.flush_resource(&sctx->b.b, &rsrc->resource.b.b);
+
+       assert(!(rsrc->dirty_level_mask & (1 << src_level)));
+       assert(!(rdst->dirty_level_mask & (1 << dst_level)));
+
+       return true;
+}
+
+/* Same as resource_copy_region, except that both upsampling and downsampling are allowed. */
+static void si_copy_region_with_blit(struct pipe_context *pipe,
+                                    struct pipe_resource *dst,
+                                    unsigned dst_level,
+                                    unsigned dstx, unsigned dsty, unsigned dstz,
+                                    struct pipe_resource *src,
+                                    unsigned src_level,
+                                    const struct pipe_box *src_box)
+{
+       struct pipe_blit_info blit;
+
+       memset(&blit, 0, sizeof(blit));
+       blit.src.resource = src;
+       blit.src.format = src->format;
+       blit.src.level = src_level;
+       blit.src.box = *src_box;
+       blit.dst.resource = dst;
+       blit.dst.format = dst->format;
+       blit.dst.level = dst_level;
+       blit.dst.box.x = dstx;
+       blit.dst.box.y = dsty;
+       blit.dst.box.z = dstz;
+       blit.dst.box.width = src_box->width;
+       blit.dst.box.height = src_box->height;
+       blit.dst.box.depth = src_box->depth;
+       blit.mask = util_format_get_mask(src->format) &
+                   util_format_get_mask(dst->format);
+       blit.filter = PIPE_TEX_FILTER_NEAREST;
+
+       if (blit.mask) {
+               pipe->blit(pipe, &blit);
+       }
+}
+
+/* Copy from a full GPU texture to a transfer's staging one. */
+static void si_copy_to_staging_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
+       struct pipe_resource *dst = &rtransfer->staging->b.b;
+       struct pipe_resource *src = transfer->resource;
+
+       if (src->nr_samples > 1) {
+               si_copy_region_with_blit(ctx, dst, 0, 0, 0, 0,
+                                          src, transfer->level, &transfer->box);
+               return;
+       }
+
+       sctx->b.dma_copy(ctx, dst, 0, 0, 0, 0, src, transfer->level,
+                      &transfer->box);
+}
+
+/* Copy from a transfer's staging texture to a full GPU one. */
+static void si_copy_from_staging_texture(struct pipe_context *ctx, struct r600_transfer *rtransfer)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct pipe_transfer *transfer = (struct pipe_transfer*)rtransfer;
+       struct pipe_resource *dst = transfer->resource;
+       struct pipe_resource *src = &rtransfer->staging->b.b;
+       struct pipe_box sbox;
+
+       u_box_3d(0, 0, 0, transfer->box.width, transfer->box.height, transfer->box.depth, &sbox);
+
+       if (dst->nr_samples > 1) {
+               si_copy_region_with_blit(ctx, dst, transfer->level,
+                                          transfer->box.x, transfer->box.y, transfer->box.z,
+                                          src, 0, &sbox);
+               return;
+       }
+
+       sctx->b.dma_copy(ctx, dst, transfer->level,
+                      transfer->box.x, transfer->box.y, transfer->box.z,
+                      src, 0, &sbox);
+}
+
+static unsigned si_texture_get_offset(struct si_screen *sscreen,
+                                     struct r600_texture *rtex, unsigned level,
+                                     const struct pipe_box *box,
+                                     unsigned *stride,
+                                     unsigned *layer_stride)
+{
+       if (sscreen->info.chip_class >= GFX9) {
+               *stride = rtex->surface.u.gfx9.surf_pitch * rtex->surface.bpe;
+               *layer_stride = rtex->surface.u.gfx9.surf_slice_size;
+
+               if (!box)
+                       return 0;
+
+               /* Each texture is an array of slices. Each slice is an array
+                * of mipmap levels. */
+               return box->z * rtex->surface.u.gfx9.surf_slice_size +
+                      rtex->surface.u.gfx9.offset[level] +
+                      (box->y / rtex->surface.blk_h *
+                       rtex->surface.u.gfx9.surf_pitch +
+                       box->x / rtex->surface.blk_w) * rtex->surface.bpe;
+       } else {
+               *stride = rtex->surface.u.legacy.level[level].nblk_x *
+                         rtex->surface.bpe;
+               assert((uint64_t)rtex->surface.u.legacy.level[level].slice_size_dw * 4 <= UINT_MAX);
+               *layer_stride = (uint64_t)rtex->surface.u.legacy.level[level].slice_size_dw * 4;
+
+               if (!box)
+                       return rtex->surface.u.legacy.level[level].offset;
+
+               /* Each texture is an array of mipmap levels. Each level is
+                * an array of slices. */
+               return rtex->surface.u.legacy.level[level].offset +
+                      box->z * (uint64_t)rtex->surface.u.legacy.level[level].slice_size_dw * 4 +
+                      (box->y / rtex->surface.blk_h *
+                       rtex->surface.u.legacy.level[level].nblk_x +
+                       box->x / rtex->surface.blk_w) * rtex->surface.bpe;
+       }
+}
+
+static int si_init_surface(struct si_screen *sscreen,
+                          struct radeon_surf *surface,
+                          const struct pipe_resource *ptex,
+                          enum radeon_surf_mode array_mode,
+                          unsigned pitch_in_bytes_override,
+                          unsigned offset,
+                          bool is_imported,
+                          bool is_scanout,
+                          bool is_flushed_depth,
+                          bool tc_compatible_htile)
+{
+       const struct util_format_description *desc =
+               util_format_description(ptex->format);
+       bool is_depth, is_stencil;
+       int r;
+       unsigned i, bpe, flags = 0;
+
+       is_depth = util_format_has_depth(desc);
+       is_stencil = util_format_has_stencil(desc);
+
+       if (!is_flushed_depth &&
+           ptex->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
+               bpe = 4; /* stencil is allocated separately on evergreen */
+       } else {
+               bpe = util_format_get_blocksize(ptex->format);
+               assert(util_is_power_of_two_or_zero(bpe));
+       }
+
+       if (!is_flushed_depth && is_depth) {
+               flags |= RADEON_SURF_ZBUFFER;
+
+               if (tc_compatible_htile &&
+                   (sscreen->info.chip_class >= GFX9 ||
+                    array_mode == RADEON_SURF_MODE_2D)) {
+                       /* TC-compatible HTILE only supports Z32_FLOAT.
+                        * GFX9 also supports Z16_UNORM.
+                        * On VI, promote Z16 to Z32. DB->CB copies will convert
+                        * the format for transfers.
+                        */
+                       if (sscreen->info.chip_class == VI)
+                               bpe = 4;
+
+                       flags |= RADEON_SURF_TC_COMPATIBLE_HTILE;
+               }
+
+               if (is_stencil)
+                       flags |= RADEON_SURF_SBUFFER;
+       }
+
+       if (sscreen->info.chip_class >= VI &&
+           (ptex->flags & SI_RESOURCE_FLAG_DISABLE_DCC ||
+            ptex->format == PIPE_FORMAT_R9G9B9E5_FLOAT ||
+            /* DCC MSAA array textures are disallowed due to incomplete clear impl. */
+            (ptex->nr_samples >= 2 &&
+             (!sscreen->dcc_msaa_allowed || ptex->array_size > 1))))
+               flags |= RADEON_SURF_DISABLE_DCC;
+
+       if (ptex->bind & PIPE_BIND_SCANOUT || is_scanout) {
+               /* This should catch bugs in gallium users setting incorrect flags. */
+               assert(ptex->nr_samples <= 1 &&
+                      ptex->array_size == 1 &&
+                      ptex->depth0 == 1 &&
+                      ptex->last_level == 0 &&
+                      !(flags & RADEON_SURF_Z_OR_SBUFFER));
+
+               flags |= RADEON_SURF_SCANOUT;
+       }
+
+       if (ptex->bind & PIPE_BIND_SHARED)
+               flags |= RADEON_SURF_SHAREABLE;
+       if (is_imported)
+               flags |= RADEON_SURF_IMPORTED | RADEON_SURF_SHAREABLE;
+       if (!(ptex->flags & SI_RESOURCE_FLAG_FORCE_TILING))
+               flags |= RADEON_SURF_OPTIMIZE_FOR_SPACE;
+
+       r = sscreen->ws->surface_init(sscreen->ws, ptex, flags, bpe,
+                                     array_mode, surface);
+       if (r) {
+               return r;
+       }
+
+       unsigned pitch = pitch_in_bytes_override / bpe;
+
+       if (sscreen->info.chip_class >= GFX9) {
+               if (pitch) {
+                       surface->u.gfx9.surf_pitch = pitch;
+                       surface->u.gfx9.surf_slice_size =
+                               (uint64_t)pitch * surface->u.gfx9.surf_height * bpe;
+               }
+               surface->u.gfx9.surf_offset = offset;
+       } else {
+               if (pitch) {
+                       surface->u.legacy.level[0].nblk_x = pitch;
+                       surface->u.legacy.level[0].slice_size_dw =
+                               ((uint64_t)pitch * surface->u.legacy.level[0].nblk_y * bpe) / 4;
+               }
+               if (offset) {
+                       for (i = 0; i < ARRAY_SIZE(surface->u.legacy.level); ++i)
+                               surface->u.legacy.level[i].offset += offset;
+               }
+       }
+       return 0;
+}
+
+static void si_texture_init_metadata(struct si_screen *sscreen,
+                                    struct r600_texture *rtex,
+                                    struct radeon_bo_metadata *metadata)
+{
+       struct radeon_surf *surface = &rtex->surface;
+
+       memset(metadata, 0, sizeof(*metadata));
+
+       if (sscreen->info.chip_class >= GFX9) {
+               metadata->u.gfx9.swizzle_mode = surface->u.gfx9.surf.swizzle_mode;
+       } else {
+               metadata->u.legacy.microtile = surface->u.legacy.level[0].mode >= RADEON_SURF_MODE_1D ?
+                                          RADEON_LAYOUT_TILED : RADEON_LAYOUT_LINEAR;
+               metadata->u.legacy.macrotile = surface->u.legacy.level[0].mode >= RADEON_SURF_MODE_2D ?
+                                          RADEON_LAYOUT_TILED : RADEON_LAYOUT_LINEAR;
+               metadata->u.legacy.pipe_config = surface->u.legacy.pipe_config;
+               metadata->u.legacy.bankw = surface->u.legacy.bankw;
+               metadata->u.legacy.bankh = surface->u.legacy.bankh;
+               metadata->u.legacy.tile_split = surface->u.legacy.tile_split;
+               metadata->u.legacy.mtilea = surface->u.legacy.mtilea;
+               metadata->u.legacy.num_banks = surface->u.legacy.num_banks;
+               metadata->u.legacy.stride = surface->u.legacy.level[0].nblk_x * surface->bpe;
+               metadata->u.legacy.scanout = (surface->flags & RADEON_SURF_SCANOUT) != 0;
+       }
+}
+
+static void si_surface_import_metadata(struct si_screen *sscreen,
+                                      struct radeon_surf *surf,
+                                      struct radeon_bo_metadata *metadata,
+                                      enum radeon_surf_mode *array_mode,
+                                      bool *is_scanout)
+{
+       if (sscreen->info.chip_class >= GFX9) {
+               if (metadata->u.gfx9.swizzle_mode > 0)
+                       *array_mode = RADEON_SURF_MODE_2D;
+               else
+                       *array_mode = RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               *is_scanout = metadata->u.gfx9.swizzle_mode == 0 ||
+                             metadata->u.gfx9.swizzle_mode % 4 == 2;
+
+               surf->u.gfx9.surf.swizzle_mode = metadata->u.gfx9.swizzle_mode;
+       } else {
+               surf->u.legacy.pipe_config = metadata->u.legacy.pipe_config;
+               surf->u.legacy.bankw = metadata->u.legacy.bankw;
+               surf->u.legacy.bankh = metadata->u.legacy.bankh;
+               surf->u.legacy.tile_split = metadata->u.legacy.tile_split;
+               surf->u.legacy.mtilea = metadata->u.legacy.mtilea;
+               surf->u.legacy.num_banks = metadata->u.legacy.num_banks;
+
+               if (metadata->u.legacy.macrotile == RADEON_LAYOUT_TILED)
+                       *array_mode = RADEON_SURF_MODE_2D;
+               else if (metadata->u.legacy.microtile == RADEON_LAYOUT_TILED)
+                       *array_mode = RADEON_SURF_MODE_1D;
+               else
+                       *array_mode = RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               *is_scanout = metadata->u.legacy.scanout;
+       }
+}
+
+void si_eliminate_fast_color_clear(struct si_context *sctx,
+                                  struct r600_texture *rtex)
+{
+       struct si_screen *sscreen = sctx->screen;
+       struct pipe_context *ctx = &sctx->b.b;
+
+       if (ctx == sscreen->aux_context)
+               mtx_lock(&sscreen->aux_context_lock);
+
+       unsigned n = sctx->b.num_decompress_calls;
+       ctx->flush_resource(ctx, &rtex->resource.b.b);
+
+       /* Flush only if any fast clear elimination took place. */
+       if (n != sctx->b.num_decompress_calls)
+               ctx->flush(ctx, NULL, 0);
+
+       if (ctx == sscreen->aux_context)
+               mtx_unlock(&sscreen->aux_context_lock);
+}
+
+void si_texture_discard_cmask(struct si_screen *sscreen,
+                             struct r600_texture *rtex)
+{
+       if (!rtex->cmask.size)
+               return;
+
+       assert(rtex->resource.b.b.nr_samples <= 1);
+
+       /* Disable CMASK. */
+       memset(&rtex->cmask, 0, sizeof(rtex->cmask));
+       rtex->cmask.base_address_reg = rtex->resource.gpu_address >> 8;
+       rtex->dirty_level_mask = 0;
+
+       rtex->cb_color_info &= ~S_028C70_FAST_CLEAR(1);
+
+       if (rtex->cmask_buffer != &rtex->resource)
+           r600_resource_reference(&rtex->cmask_buffer, NULL);
+
+       /* Notify all contexts about the change. */
+       p_atomic_inc(&sscreen->dirty_tex_counter);
+       p_atomic_inc(&sscreen->compressed_colortex_counter);
+}
+
+static bool si_can_disable_dcc(struct r600_texture *rtex)
+{
+       /* We can't disable DCC if it can be written by another process. */
+       return rtex->dcc_offset &&
+              (!rtex->resource.b.is_shared ||
+               !(rtex->resource.external_usage & PIPE_HANDLE_USAGE_WRITE));
+}
+
+static bool si_texture_discard_dcc(struct si_screen *sscreen,
+                                  struct r600_texture *rtex)
+{
+       if (!si_can_disable_dcc(rtex))
+               return false;
+
+       assert(rtex->dcc_separate_buffer == NULL);
+
+       /* Disable DCC. */
+       rtex->dcc_offset = 0;
+
+       /* Notify all contexts about the change. */
+       p_atomic_inc(&sscreen->dirty_tex_counter);
+       return true;
+}
+
+/**
+ * Disable DCC for the texture. (first decompress, then discard metadata).
+ *
+ * There is unresolved multi-context synchronization issue between
+ * screen::aux_context and the current context. If applications do this with
+ * multiple contexts, it's already undefined behavior for them and we don't
+ * have to worry about that. The scenario is:
+ *
+ * If context 1 disables DCC and context 2 has queued commands that write
+ * to the texture via CB with DCC enabled, and the order of operations is
+ * as follows:
+ *   context 2 queues draw calls rendering to the texture, but doesn't flush
+ *   context 1 disables DCC and flushes
+ *   context 1 & 2 reset descriptors and FB state
+ *   context 2 flushes (new compressed tiles written by the draw calls)
+ *   context 1 & 2 read garbage, because DCC is disabled, yet there are
+ *   compressed tiled
+ *
+ * \param sctx  the current context if you have one, or rscreen->aux_context
+ *              if you don't.
+ */
+bool si_texture_disable_dcc(struct si_context *sctx,
+                           struct r600_texture *rtex)
+{
+       struct si_screen *sscreen = sctx->screen;
+
+       if (!si_can_disable_dcc(rtex))
+               return false;
+
+       if (&sctx->b.b == sscreen->aux_context)
+               mtx_lock(&sscreen->aux_context_lock);
+
+       /* Decompress DCC. */
+       si_decompress_dcc(sctx, rtex);
+       sctx->b.b.flush(&sctx->b.b, NULL, 0);
+
+       if (&sctx->b.b == sscreen->aux_context)
+               mtx_unlock(&sscreen->aux_context_lock);
+
+       return si_texture_discard_dcc(sscreen, rtex);
+}
+
+static void si_reallocate_texture_inplace(struct si_context *sctx,
+                                         struct r600_texture *rtex,
+                                         unsigned new_bind_flag,
+                                         bool invalidate_storage)
+{
+       struct pipe_screen *screen = sctx->b.b.screen;
+       struct r600_texture *new_tex;
+       struct pipe_resource templ = rtex->resource.b.b;
+       unsigned i;
+
+       templ.bind |= new_bind_flag;
+
+       if (rtex->resource.b.is_shared)
+               return;
+
+       if (new_bind_flag == PIPE_BIND_LINEAR) {
+               if (rtex->surface.is_linear)
+                       return;
+
+               /* This fails with MSAA, depth, and compressed textures. */
+               if (si_choose_tiling(sctx->screen, &templ) !=
+                   RADEON_SURF_MODE_LINEAR_ALIGNED)
+                       return;
+       }
+
+       new_tex = (struct r600_texture*)screen->resource_create(screen, &templ);
+       if (!new_tex)
+               return;
+
+       /* Copy the pixels to the new texture. */
+       if (!invalidate_storage) {
+               for (i = 0; i <= templ.last_level; i++) {
+                       struct pipe_box box;
+
+                       u_box_3d(0, 0, 0,
+                                u_minify(templ.width0, i), u_minify(templ.height0, i),
+                                util_num_layers(&templ, i), &box);
+
+                       sctx->b.dma_copy(&sctx->b.b, &new_tex->resource.b.b, i, 0, 0, 0,
+                                      &rtex->resource.b.b, i, &box);
+               }
+       }
+
+       if (new_bind_flag == PIPE_BIND_LINEAR) {
+               si_texture_discard_cmask(sctx->screen, rtex);
+               si_texture_discard_dcc(sctx->screen, rtex);
+       }
+
+       /* Replace the structure fields of rtex. */
+       rtex->resource.b.b.bind = templ.bind;
+       pb_reference(&rtex->resource.buf, new_tex->resource.buf);
+       rtex->resource.gpu_address = new_tex->resource.gpu_address;
+       rtex->resource.vram_usage = new_tex->resource.vram_usage;
+       rtex->resource.gart_usage = new_tex->resource.gart_usage;
+       rtex->resource.bo_size = new_tex->resource.bo_size;
+       rtex->resource.bo_alignment = new_tex->resource.bo_alignment;
+       rtex->resource.domains = new_tex->resource.domains;
+       rtex->resource.flags = new_tex->resource.flags;
+       rtex->size = new_tex->size;
+       rtex->db_render_format = new_tex->db_render_format;
+       rtex->db_compatible = new_tex->db_compatible;
+       rtex->can_sample_z = new_tex->can_sample_z;
+       rtex->can_sample_s = new_tex->can_sample_s;
+       rtex->surface = new_tex->surface;
+       rtex->fmask = new_tex->fmask;
+       rtex->cmask = new_tex->cmask;
+       rtex->cb_color_info = new_tex->cb_color_info;
+       rtex->last_msaa_resolve_target_micro_mode = new_tex->last_msaa_resolve_target_micro_mode;
+       rtex->htile_offset = new_tex->htile_offset;
+       rtex->tc_compatible_htile = new_tex->tc_compatible_htile;
+       rtex->depth_cleared = new_tex->depth_cleared;
+       rtex->stencil_cleared = new_tex->stencil_cleared;
+       rtex->dcc_gather_statistics = new_tex->dcc_gather_statistics;
+       rtex->framebuffers_bound = new_tex->framebuffers_bound;
+
+       if (new_bind_flag == PIPE_BIND_LINEAR) {
+               assert(!rtex->htile_offset);
+               assert(!rtex->cmask.size);
+               assert(!rtex->fmask.size);
+               assert(!rtex->dcc_offset);
+               assert(!rtex->is_depth);
+       }
+
+       r600_texture_reference(&new_tex, NULL);
+
+       p_atomic_inc(&sctx->screen->dirty_tex_counter);
+}
+
+static uint32_t si_get_bo_metadata_word1(struct si_screen *sscreen)
+{
+       return (ATI_VENDOR_ID << 16) | sscreen->info.pci_id;
+}
+
+static void si_query_opaque_metadata(struct si_screen *sscreen,
+                                    struct r600_texture *rtex,
+                                    struct radeon_bo_metadata *md)
+{
+       struct pipe_resource *res = &rtex->resource.b.b;
+       static const unsigned char swizzle[] = {
+               PIPE_SWIZZLE_X,
+               PIPE_SWIZZLE_Y,
+               PIPE_SWIZZLE_Z,
+               PIPE_SWIZZLE_W
+       };
+       uint32_t desc[8], i;
+       bool is_array = util_texture_is_array(res->target);
+
+       /* DRM 2.x.x doesn't support this. */
+       if (sscreen->info.drm_major != 3)
+               return;
+
+       assert(rtex->dcc_separate_buffer == NULL);
+       assert(rtex->fmask.size == 0);
+
+       /* Metadata image format format version 1:
+        * [0] = 1 (metadata format identifier)
+        * [1] = (VENDOR_ID << 16) | PCI_ID
+        * [2:9] = image descriptor for the whole resource
+        *         [2] is always 0, because the base address is cleared
+        *         [9] is the DCC offset bits [39:8] from the beginning of
+        *             the buffer
+        * [10:10+LAST_LEVEL] = mipmap level offset bits [39:8] for each level
+        */
+
+       md->metadata[0] = 1; /* metadata image format version 1 */
+
+       /* TILE_MODE_INDEX is ambiguous without a PCI ID. */
+       md->metadata[1] = si_get_bo_metadata_word1(sscreen);
+
+       si_make_texture_descriptor(sscreen, rtex, true,
+                                  res->target, res->format,
+                                  swizzle, 0, res->last_level, 0,
+                                  is_array ? res->array_size - 1 : 0,
+                                  res->width0, res->height0, res->depth0,
+                                  desc, NULL);
+
+       si_set_mutable_tex_desc_fields(sscreen, rtex, &rtex->surface.u.legacy.level[0],
+                                      0, 0, rtex->surface.blk_w, false, desc);
+
+       /* Clear the base address and set the relative DCC offset. */
+       desc[0] = 0;
+       desc[1] &= C_008F14_BASE_ADDRESS_HI;
+       desc[7] = rtex->dcc_offset >> 8;
+
+       /* Dwords [2:9] contain the image descriptor. */
+       memcpy(&md->metadata[2], desc, sizeof(desc));
+       md->size_metadata = 10 * 4;
+
+       /* Dwords [10:..] contain the mipmap level offsets. */
+       if (sscreen->info.chip_class <= VI) {
+               for (i = 0; i <= res->last_level; i++)
+                       md->metadata[10+i] = rtex->surface.u.legacy.level[i].offset >> 8;
+
+               md->size_metadata += (1 + res->last_level) * 4;
+       }
+}
+
+static void si_apply_opaque_metadata(struct si_screen *sscreen,
+                                    struct r600_texture *rtex,
+                                    struct radeon_bo_metadata *md)
+{
+       uint32_t *desc = &md->metadata[2];
+
+       if (sscreen->info.chip_class < VI)
+               return;
+
+       /* Return if DCC is enabled. The texture should be set up with it
+        * already.
+        */
+       if (md->size_metadata >= 10 * 4 && /* at least 2(header) + 8(desc) dwords */
+           md->metadata[0] != 0 &&
+           md->metadata[1] == si_get_bo_metadata_word1(sscreen) &&
+           G_008F28_COMPRESSION_EN(desc[6])) {
+               rtex->dcc_offset = (uint64_t)desc[7] << 8;
+               return;
+       }
+
+       /* Disable DCC. These are always set by texture_from_handle and must
+        * be cleared here.
+        */
+       rtex->dcc_offset = 0;
+}
+
+static boolean si_texture_get_handle(struct pipe_screen* screen,
+                                    struct pipe_context *ctx,
+                                    struct pipe_resource *resource,
+                                    struct winsys_handle *whandle,
+                                    unsigned usage)
+{
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct si_context *sctx;
+       struct r600_resource *res = (struct r600_resource*)resource;
+       struct r600_texture *rtex = (struct r600_texture*)resource;
+       struct radeon_bo_metadata metadata;
+       bool update_metadata = false;
+       unsigned stride, offset, slice_size;
+       bool flush = false;
+
+       ctx = threaded_context_unwrap_sync(ctx);
+       sctx = (struct si_context*)(ctx ? ctx : sscreen->aux_context);
+
+       if (resource->target != PIPE_BUFFER) {
+               /* This is not supported now, but it might be required for OpenCL
+                * interop in the future.
+                */
+               if (resource->nr_samples > 1 || rtex->is_depth)
+                       return false;
+
+               /* Move a suballocated texture into a non-suballocated allocation. */
+               if (sscreen->ws->buffer_is_suballocated(res->buf) ||
+                   rtex->surface.tile_swizzle ||
+                   (rtex->resource.flags & RADEON_FLAG_NO_INTERPROCESS_SHARING &&
+                    sscreen->info.has_local_buffers &&
+                    whandle->type != DRM_API_HANDLE_TYPE_KMS)) {
+                       assert(!res->b.is_shared);
+                       si_reallocate_texture_inplace(sctx, rtex,
+                                                       PIPE_BIND_SHARED, false);
+                       flush = true;
+                       assert(res->b.b.bind & PIPE_BIND_SHARED);
+                       assert(res->flags & RADEON_FLAG_NO_SUBALLOC);
+                       assert(!(res->flags & RADEON_FLAG_NO_INTERPROCESS_SHARING));
+                       assert(rtex->surface.tile_swizzle == 0);
+               }
+
+               /* Since shader image stores don't support DCC on VI,
+                * disable it for external clients that want write
+                * access.
+                */
+               if (usage & PIPE_HANDLE_USAGE_WRITE && rtex->dcc_offset) {
+                       if (si_texture_disable_dcc(sctx, rtex)) {
+                               update_metadata = true;
+                               /* si_texture_disable_dcc flushes the context */
+                               flush = false;
+                       }
+               }
+
+               if (!(usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH) &&
+                   (rtex->cmask.size || rtex->dcc_offset)) {
+                       /* Eliminate fast clear (both CMASK and DCC) */
+                       si_eliminate_fast_color_clear(sctx, rtex);
+                       /* eliminate_fast_color_clear flushes the context */
+                       flush = false;
+
+                       /* Disable CMASK if flush_resource isn't going
+                        * to be called.
+                        */
+                       if (rtex->cmask.size)
+                               si_texture_discard_cmask(sscreen, rtex);
+               }
+
+               /* Set metadata. */
+               if (!res->b.is_shared || update_metadata) {
+                       si_texture_init_metadata(sscreen, rtex, &metadata);
+                       si_query_opaque_metadata(sscreen, rtex, &metadata);
+
+                       sscreen->ws->buffer_set_metadata(res->buf, &metadata);
+               }
+
+               if (sscreen->info.chip_class >= GFX9) {
+                       offset = rtex->surface.u.gfx9.surf_offset;
+                       stride = rtex->surface.u.gfx9.surf_pitch *
+                                rtex->surface.bpe;
+                       slice_size = rtex->surface.u.gfx9.surf_slice_size;
+               } else {
+                       offset = rtex->surface.u.legacy.level[0].offset;
+                       stride = rtex->surface.u.legacy.level[0].nblk_x *
+                                rtex->surface.bpe;
+                       slice_size = (uint64_t)rtex->surface.u.legacy.level[0].slice_size_dw * 4;
+               }
+       } else {
+               /* Buffer exports are for the OpenCL interop. */
+               /* Move a suballocated buffer into a non-suballocated allocation. */
+               if (sscreen->ws->buffer_is_suballocated(res->buf) ||
+                   /* A DMABUF export always fails if the BO is local. */
+                   (rtex->resource.flags & RADEON_FLAG_NO_INTERPROCESS_SHARING &&
+                    sscreen->info.has_local_buffers)) {
+                       assert(!res->b.is_shared);
+
+                       /* Allocate a new buffer with PIPE_BIND_SHARED. */
+                       struct pipe_resource templ = res->b.b;
+                       templ.bind |= PIPE_BIND_SHARED;
+
+                       struct pipe_resource *newb =
+                               screen->resource_create(screen, &templ);
+                       if (!newb)
+                               return false;
+
+                       /* Copy the old buffer contents to the new one. */
+                       struct pipe_box box;
+                       u_box_1d(0, newb->width0, &box);
+                       sctx->b.b.resource_copy_region(&sctx->b.b, newb, 0, 0, 0, 0,
+                                                    &res->b.b, 0, &box);
+                       flush = true;
+                       /* Move the new buffer storage to the old pipe_resource. */
+                       si_replace_buffer_storage(&sctx->b.b, &res->b.b, newb);
+                       pipe_resource_reference(&newb, NULL);
+
+                       assert(res->b.b.bind & PIPE_BIND_SHARED);
+                       assert(res->flags & RADEON_FLAG_NO_SUBALLOC);
+               }
+
+               /* Buffers */
+               offset = 0;
+               stride = 0;
+               slice_size = 0;
+       }
+
+       if (flush)
+               sctx->b.b.flush(&sctx->b.b, NULL, 0);
+
+       if (res->b.is_shared) {
+               /* USAGE_EXPLICIT_FLUSH must be cleared if at least one user
+                * doesn't set it.
+                */
+               res->external_usage |= usage & ~PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
+               if (!(usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH))
+                       res->external_usage &= ~PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
+       } else {
+               res->b.is_shared = true;
+               res->external_usage = usage;
+       }
+
+       return sscreen->ws->buffer_get_handle(res->buf, stride, offset,
+                                             slice_size, whandle);
+}
+
+static void si_texture_destroy(struct pipe_screen *screen,
+                              struct pipe_resource *ptex)
+{
+       struct r600_texture *rtex = (struct r600_texture*)ptex;
+       struct r600_resource *resource = &rtex->resource;
+
+       r600_texture_reference(&rtex->flushed_depth_texture, NULL);
+
+       if (rtex->cmask_buffer != &rtex->resource) {
+           r600_resource_reference(&rtex->cmask_buffer, NULL);
+       }
+       pb_reference(&resource->buf, NULL);
+       r600_resource_reference(&rtex->dcc_separate_buffer, NULL);
+       r600_resource_reference(&rtex->last_dcc_separate_buffer, NULL);
+       FREE(rtex);
+}
+
+static const struct u_resource_vtbl si_texture_vtbl;
+
+/* The number of samples can be specified independently of the texture. */
+void si_texture_get_fmask_info(struct si_screen *sscreen,
+                              struct r600_texture *rtex,
+                              unsigned nr_samples,
+                              struct r600_fmask_info *out)
+{
+       /* FMASK is allocated like an ordinary texture. */
+       struct pipe_resource templ = rtex->resource.b.b;
+       struct radeon_surf fmask = {};
+       unsigned flags, bpe;
+
+       memset(out, 0, sizeof(*out));
+
+       if (sscreen->info.chip_class >= GFX9) {
+               out->alignment = rtex->surface.u.gfx9.fmask_alignment;
+               out->size = rtex->surface.u.gfx9.fmask_size;
+               out->tile_swizzle = rtex->surface.u.gfx9.fmask_tile_swizzle;
+               return;
+       }
+
+       templ.nr_samples = 1;
+       flags = rtex->surface.flags | RADEON_SURF_FMASK;
+
+       switch (nr_samples) {
+       case 2:
+       case 4:
+               bpe = 1;
+               break;
+       case 8:
+               bpe = 4;
+               break;
+       default:
+               PRINT_ERR("Invalid sample count for FMASK allocation.\n");
+               return;
+       }
+
+       if (sscreen->ws->surface_init(sscreen->ws, &templ, flags, bpe,
+                                     RADEON_SURF_MODE_2D, &fmask)) {
+               PRINT_ERR("Got error in surface_init while allocating FMASK.\n");
+               return;
+       }
+
+       assert(fmask.u.legacy.level[0].mode == RADEON_SURF_MODE_2D);
+
+       out->slice_tile_max = (fmask.u.legacy.level[0].nblk_x * fmask.u.legacy.level[0].nblk_y) / 64;
+       if (out->slice_tile_max)
+               out->slice_tile_max -= 1;
+
+       out->tile_mode_index = fmask.u.legacy.tiling_index[0];
+       out->pitch_in_pixels = fmask.u.legacy.level[0].nblk_x;
+       out->bank_height = fmask.u.legacy.bankh;
+       out->tile_swizzle = fmask.tile_swizzle;
+       out->alignment = MAX2(256, fmask.surf_alignment);
+       out->size = fmask.surf_size;
+}
+
+static void si_texture_allocate_fmask(struct si_screen *sscreen,
+                                     struct r600_texture *rtex)
+{
+       si_texture_get_fmask_info(sscreen, rtex,
+                                   rtex->resource.b.b.nr_samples, &rtex->fmask);
+
+       rtex->fmask.offset = align64(rtex->size, rtex->fmask.alignment);
+       rtex->size = rtex->fmask.offset + rtex->fmask.size;
+}
+
+void si_texture_get_cmask_info(struct si_screen *sscreen,
+                              struct r600_texture *rtex,
+                              struct r600_cmask_info *out)
+{
+       unsigned pipe_interleave_bytes = sscreen->info.pipe_interleave_bytes;
+       unsigned num_pipes = sscreen->info.num_tile_pipes;
+       unsigned cl_width, cl_height;
+
+       if (sscreen->info.chip_class >= GFX9) {
+               out->alignment = rtex->surface.u.gfx9.cmask_alignment;
+               out->size = rtex->surface.u.gfx9.cmask_size;
+               return;
+       }
+
+       switch (num_pipes) {
+       case 2:
+               cl_width = 32;
+               cl_height = 16;
+               break;
+       case 4:
+               cl_width = 32;
+               cl_height = 32;
+               break;
+       case 8:
+               cl_width = 64;
+               cl_height = 32;
+               break;
+       case 16: /* Hawaii */
+               cl_width = 64;
+               cl_height = 64;
+               break;
+       default:
+               assert(0);
+               return;
+       }
+
+       unsigned base_align = num_pipes * pipe_interleave_bytes;
+
+       unsigned width = align(rtex->resource.b.b.width0, cl_width*8);
+       unsigned height = align(rtex->resource.b.b.height0, cl_height*8);
+       unsigned slice_elements = (width * height) / (8*8);
+
+       /* Each element of CMASK is a nibble. */
+       unsigned slice_bytes = slice_elements / 2;
+
+       out->slice_tile_max = (width * height) / (128*128);
+       if (out->slice_tile_max)
+               out->slice_tile_max -= 1;
+
+       out->alignment = MAX2(256, base_align);
+       out->size = util_num_layers(&rtex->resource.b.b, 0) *
+                   align(slice_bytes, base_align);
+}
+
+static void si_texture_allocate_cmask(struct si_screen *sscreen,
+                                     struct r600_texture *rtex)
+{
+       si_texture_get_cmask_info(sscreen, rtex, &rtex->cmask);
+
+       rtex->cmask.offset = align64(rtex->size, rtex->cmask.alignment);
+       rtex->size = rtex->cmask.offset + rtex->cmask.size;
+
+       rtex->cb_color_info |= S_028C70_FAST_CLEAR(1);
+}
+
+static void si_texture_get_htile_size(struct si_screen *sscreen,
+                                     struct r600_texture *rtex)
+{
+       unsigned cl_width, cl_height, width, height;
+       unsigned slice_elements, slice_bytes, pipe_interleave_bytes, base_align;
+       unsigned num_pipes = sscreen->info.num_tile_pipes;
+
+       assert(sscreen->info.chip_class <= VI);
+
+       rtex->surface.htile_size = 0;
+
+       /* HTILE is broken with 1D tiling on old kernels and CIK. */
+       if (sscreen->info.chip_class >= CIK &&
+           rtex->surface.u.legacy.level[0].mode == RADEON_SURF_MODE_1D &&
+           sscreen->info.drm_major == 2 && sscreen->info.drm_minor < 38)
+               return;
+
+       /* Overalign HTILE on P2 configs to work around GPU hangs in
+        * piglit/depthstencil-render-miplevels 585.
+        *
+        * This has been confirmed to help Kabini & Stoney, where the hangs
+        * are always reproducible. I think I have seen the test hang
+        * on Carrizo too, though it was very rare there.
+        */
+       if (sscreen->info.chip_class >= CIK && num_pipes < 4)
+               num_pipes = 4;
+
+       switch (num_pipes) {
+       case 1:
+               cl_width = 32;
+               cl_height = 16;
+               break;
+       case 2:
+               cl_width = 32;
+               cl_height = 32;
+               break;
+       case 4:
+               cl_width = 64;
+               cl_height = 32;
+               break;
+       case 8:
+               cl_width = 64;
+               cl_height = 64;
+               break;
+       case 16:
+               cl_width = 128;
+               cl_height = 64;
+               break;
+       default:
+               assert(0);
+               return;
+       }
+
+       width = align(rtex->resource.b.b.width0, cl_width * 8);
+       height = align(rtex->resource.b.b.height0, cl_height * 8);
+
+       slice_elements = (width * height) / (8 * 8);
+       slice_bytes = slice_elements * 4;
+
+       pipe_interleave_bytes = sscreen->info.pipe_interleave_bytes;
+       base_align = num_pipes * pipe_interleave_bytes;
+
+       rtex->surface.htile_alignment = base_align;
+       rtex->surface.htile_size =
+               util_num_layers(&rtex->resource.b.b, 0) *
+               align(slice_bytes, base_align);
+}
+
+static void si_texture_allocate_htile(struct si_screen *sscreen,
+                                     struct r600_texture *rtex)
+{
+       if (sscreen->info.chip_class <= VI && !rtex->tc_compatible_htile)
+               si_texture_get_htile_size(sscreen, rtex);
+
+       if (!rtex->surface.htile_size)
+               return;
+
+       rtex->htile_offset = align(rtex->size, rtex->surface.htile_alignment);
+       rtex->size = rtex->htile_offset + rtex->surface.htile_size;
+}
+
+void si_print_texture_info(struct si_screen *sscreen,
+                          struct r600_texture *rtex, struct u_log_context *log)
+{
+       int i;
+
+       /* Common parameters. */
+       u_log_printf(log, "  Info: npix_x=%u, npix_y=%u, npix_z=%u, blk_w=%u, "
+               "blk_h=%u, array_size=%u, last_level=%u, "
+               "bpe=%u, nsamples=%u, flags=0x%x, %s\n",
+               rtex->resource.b.b.width0, rtex->resource.b.b.height0,
+               rtex->resource.b.b.depth0, rtex->surface.blk_w,
+               rtex->surface.blk_h,
+               rtex->resource.b.b.array_size, rtex->resource.b.b.last_level,
+               rtex->surface.bpe, rtex->resource.b.b.nr_samples,
+               rtex->surface.flags, util_format_short_name(rtex->resource.b.b.format));
+
+       if (sscreen->info.chip_class >= GFX9) {
+               u_log_printf(log, "  Surf: size=%"PRIu64", slice_size=%"PRIu64", "
+                       "alignment=%u, swmode=%u, epitch=%u, pitch=%u\n",
+                       rtex->surface.surf_size,
+                       rtex->surface.u.gfx9.surf_slice_size,
+                       rtex->surface.surf_alignment,
+                       rtex->surface.u.gfx9.surf.swizzle_mode,
+                       rtex->surface.u.gfx9.surf.epitch,
+                       rtex->surface.u.gfx9.surf_pitch);
+
+               if (rtex->fmask.size) {
+                       u_log_printf(log, "  FMASK: offset=%"PRIu64", size=%"PRIu64", "
+                               "alignment=%u, swmode=%u, epitch=%u\n",
+                               rtex->fmask.offset,
+                               rtex->surface.u.gfx9.fmask_size,
+                               rtex->surface.u.gfx9.fmask_alignment,
+                               rtex->surface.u.gfx9.fmask.swizzle_mode,
+                               rtex->surface.u.gfx9.fmask.epitch);
+               }
+
+               if (rtex->cmask.size) {
+                       u_log_printf(log, "  CMask: offset=%"PRIu64", size=%"PRIu64", "
+                               "alignment=%u, rb_aligned=%u, pipe_aligned=%u\n",
+                               rtex->cmask.offset,
+                               rtex->surface.u.gfx9.cmask_size,
+                               rtex->surface.u.gfx9.cmask_alignment,
+                               rtex->surface.u.gfx9.cmask.rb_aligned,
+                               rtex->surface.u.gfx9.cmask.pipe_aligned);
+               }
+
+               if (rtex->htile_offset) {
+                       u_log_printf(log, "  HTile: offset=%"PRIu64", size=%u, alignment=%u, "
+                               "rb_aligned=%u, pipe_aligned=%u\n",
+                               rtex->htile_offset,
+                               rtex->surface.htile_size,
+                               rtex->surface.htile_alignment,
+                               rtex->surface.u.gfx9.htile.rb_aligned,
+                               rtex->surface.u.gfx9.htile.pipe_aligned);
+               }
+
+               if (rtex->dcc_offset) {
+                       u_log_printf(log, "  DCC: offset=%"PRIu64", size=%u, "
+                               "alignment=%u, pitch_max=%u, num_dcc_levels=%u\n",
+                               rtex->dcc_offset, rtex->surface.dcc_size,
+                               rtex->surface.dcc_alignment,
+                               rtex->surface.u.gfx9.dcc_pitch_max,
+                               rtex->surface.num_dcc_levels);
+               }
+
+               if (rtex->surface.u.gfx9.stencil_offset) {
+                       u_log_printf(log, "  Stencil: offset=%"PRIu64", swmode=%u, epitch=%u\n",
+                               rtex->surface.u.gfx9.stencil_offset,
+                               rtex->surface.u.gfx9.stencil.swizzle_mode,
+                               rtex->surface.u.gfx9.stencil.epitch);
+               }
+               return;
+       }
+
+       u_log_printf(log, "  Layout: size=%"PRIu64", alignment=%u, bankw=%u, "
+               "bankh=%u, nbanks=%u, mtilea=%u, tilesplit=%u, pipeconfig=%u, scanout=%u\n",
+               rtex->surface.surf_size, rtex->surface.surf_alignment, rtex->surface.u.legacy.bankw,
+               rtex->surface.u.legacy.bankh, rtex->surface.u.legacy.num_banks, rtex->surface.u.legacy.mtilea,
+               rtex->surface.u.legacy.tile_split, rtex->surface.u.legacy.pipe_config,
+               (rtex->surface.flags & RADEON_SURF_SCANOUT) != 0);
+
+       if (rtex->fmask.size)
+               u_log_printf(log, "  FMask: offset=%"PRIu64", size=%"PRIu64", alignment=%u, pitch_in_pixels=%u, "
+                       "bankh=%u, slice_tile_max=%u, tile_mode_index=%u\n",
+                       rtex->fmask.offset, rtex->fmask.size, rtex->fmask.alignment,
+                       rtex->fmask.pitch_in_pixels, rtex->fmask.bank_height,
+                       rtex->fmask.slice_tile_max, rtex->fmask.tile_mode_index);
+
+       if (rtex->cmask.size)
+               u_log_printf(log, "  CMask: offset=%"PRIu64", size=%"PRIu64", alignment=%u, "
+                       "slice_tile_max=%u\n",
+                       rtex->cmask.offset, rtex->cmask.size, rtex->cmask.alignment,
+                       rtex->cmask.slice_tile_max);
+
+       if (rtex->htile_offset)
+               u_log_printf(log, "  HTile: offset=%"PRIu64", size=%u, "
+                       "alignment=%u, TC_compatible = %u\n",
+                       rtex->htile_offset, rtex->surface.htile_size,
+                       rtex->surface.htile_alignment,
+                       rtex->tc_compatible_htile);
+
+       if (rtex->dcc_offset) {
+               u_log_printf(log, "  DCC: offset=%"PRIu64", size=%u, alignment=%u\n",
+                       rtex->dcc_offset, rtex->surface.dcc_size,
+                       rtex->surface.dcc_alignment);
+               for (i = 0; i <= rtex->resource.b.b.last_level; i++)
+                       u_log_printf(log, "  DCCLevel[%i]: enabled=%u, offset=%u, "
+                               "fast_clear_size=%u\n",
+                               i, i < rtex->surface.num_dcc_levels,
+                               rtex->surface.u.legacy.level[i].dcc_offset,
+                               rtex->surface.u.legacy.level[i].dcc_fast_clear_size);
+       }
+
+       for (i = 0; i <= rtex->resource.b.b.last_level; i++)
+               u_log_printf(log, "  Level[%i]: offset=%"PRIu64", slice_size=%"PRIu64", "
+                       "npix_x=%u, npix_y=%u, npix_z=%u, nblk_x=%u, nblk_y=%u, "
+                       "mode=%u, tiling_index = %u\n",
+                       i, rtex->surface.u.legacy.level[i].offset,
+                       (uint64_t)rtex->surface.u.legacy.level[i].slice_size_dw * 4,
+                       u_minify(rtex->resource.b.b.width0, i),
+                       u_minify(rtex->resource.b.b.height0, i),
+                       u_minify(rtex->resource.b.b.depth0, i),
+                       rtex->surface.u.legacy.level[i].nblk_x,
+                       rtex->surface.u.legacy.level[i].nblk_y,
+                       rtex->surface.u.legacy.level[i].mode,
+                       rtex->surface.u.legacy.tiling_index[i]);
+
+       if (rtex->surface.has_stencil) {
+               u_log_printf(log, "  StencilLayout: tilesplit=%u\n",
+                       rtex->surface.u.legacy.stencil_tile_split);
+               for (i = 0; i <= rtex->resource.b.b.last_level; i++) {
+                       u_log_printf(log, "  StencilLevel[%i]: offset=%"PRIu64", "
+                               "slice_size=%"PRIu64", npix_x=%u, "
+                               "npix_y=%u, npix_z=%u, nblk_x=%u, nblk_y=%u, "
+                               "mode=%u, tiling_index = %u\n",
+                               i, rtex->surface.u.legacy.stencil_level[i].offset,
+                               (uint64_t)rtex->surface.u.legacy.stencil_level[i].slice_size_dw * 4,
+                               u_minify(rtex->resource.b.b.width0, i),
+                               u_minify(rtex->resource.b.b.height0, i),
+                               u_minify(rtex->resource.b.b.depth0, i),
+                               rtex->surface.u.legacy.stencil_level[i].nblk_x,
+                               rtex->surface.u.legacy.stencil_level[i].nblk_y,
+                               rtex->surface.u.legacy.stencil_level[i].mode,
+                               rtex->surface.u.legacy.stencil_tiling_index[i]);
+               }
+       }
+}
+
+/* Common processing for r600_texture_create and r600_texture_from_handle */
+static struct r600_texture *
+si_texture_create_object(struct pipe_screen *screen,
+                        const struct pipe_resource *base,
+                        struct pb_buffer *buf,
+                        struct radeon_surf *surface)
+{
+       struct r600_texture *rtex;
+       struct r600_resource *resource;
+       struct si_screen *sscreen = (struct si_screen*)screen;
+
+       rtex = CALLOC_STRUCT(r600_texture);
+       if (!rtex)
+               return NULL;
+
+       resource = &rtex->resource;
+       resource->b.b = *base;
+       resource->b.b.next = NULL;
+       resource->b.vtbl = &si_texture_vtbl;
+       pipe_reference_init(&resource->b.b.reference, 1);
+       resource->b.b.screen = screen;
+
+       /* don't include stencil-only formats which we don't support for rendering */
+       rtex->is_depth = util_format_has_depth(util_format_description(rtex->resource.b.b.format));
+
+       rtex->surface = *surface;
+       rtex->size = rtex->surface.surf_size;
+
+       rtex->tc_compatible_htile = rtex->surface.htile_size != 0 &&
+                                   (rtex->surface.flags &
+                                    RADEON_SURF_TC_COMPATIBLE_HTILE);
+
+       /* TC-compatible HTILE:
+        * - VI only supports Z32_FLOAT.
+        * - GFX9 only supports Z32_FLOAT and Z16_UNORM. */
+       if (rtex->tc_compatible_htile) {
+               if (sscreen->info.chip_class >= GFX9 &&
+                   base->format == PIPE_FORMAT_Z16_UNORM)
+                       rtex->db_render_format = base->format;
+               else {
+                       rtex->db_render_format = PIPE_FORMAT_Z32_FLOAT;
+                       rtex->upgraded_depth = base->format != PIPE_FORMAT_Z32_FLOAT &&
+                                              base->format != PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
+               }
+       } else {
+               rtex->db_render_format = base->format;
+       }
+
+       /* Applies to GCN. */
+       rtex->last_msaa_resolve_target_micro_mode = rtex->surface.micro_tile_mode;
+
+       /* Disable separate DCC at the beginning. DRI2 doesn't reuse buffers
+        * between frames, so the only thing that can enable separate DCC
+        * with DRI2 is multiple slow clears within a frame.
+        */
+       rtex->ps_draw_ratio = 0;
+
+       if (rtex->is_depth) {
+               if (sscreen->info.chip_class >= GFX9) {
+                       rtex->can_sample_z = true;
+                       rtex->can_sample_s = true;
+               } else {
+                       rtex->can_sample_z = !rtex->surface.u.legacy.depth_adjusted;
+                       rtex->can_sample_s = !rtex->surface.u.legacy.stencil_adjusted;
+               }
+
+               if (!(base->flags & (SI_RESOURCE_FLAG_TRANSFER |
+                                    SI_RESOURCE_FLAG_FLUSHED_DEPTH))) {
+                       rtex->db_compatible = true;
+
+                       if (!(sscreen->debug_flags & DBG(NO_HYPERZ)))
+                               si_texture_allocate_htile(sscreen, rtex);
+               }
+       } else {
+               if (base->nr_samples > 1 &&
+                   !buf &&
+                   !(sscreen->debug_flags & DBG(NO_FMASK))) {
+                       si_texture_allocate_fmask(sscreen, rtex);
+                       si_texture_allocate_cmask(sscreen, rtex);
+                       rtex->cmask_buffer = &rtex->resource;
+
+                       if (!rtex->fmask.size || !rtex->cmask.size) {
+                               FREE(rtex);
+                               return NULL;
+                       }
+               }
+
+               /* Shared textures must always set up DCC here.
+                * If it's not present, it will be disabled by
+                * apply_opaque_metadata later.
+                */
+               if (rtex->surface.dcc_size &&
+                   (buf || !(sscreen->debug_flags & DBG(NO_DCC))) &&
+                   !(rtex->surface.flags & RADEON_SURF_SCANOUT)) {
+                       /* Reserve space for the DCC buffer. */
+                       rtex->dcc_offset = align64(rtex->size, rtex->surface.dcc_alignment);
+                       rtex->size = rtex->dcc_offset + rtex->surface.dcc_size;
+               }
+       }
+
+       /* Now create the backing buffer. */
+       if (!buf) {
+               si_init_resource_fields(sscreen, resource, rtex->size,
+                                         rtex->surface.surf_alignment);
+
+               if (!si_alloc_resource(sscreen, resource)) {
+                       FREE(rtex);
+                       return NULL;
+               }
+       } else {
+               resource->buf = buf;
+               resource->gpu_address = sscreen->ws->buffer_get_virtual_address(resource->buf);
+               resource->bo_size = buf->size;
+               resource->bo_alignment = buf->alignment;
+               resource->domains = sscreen->ws->buffer_get_initial_domain(resource->buf);
+               if (resource->domains & RADEON_DOMAIN_VRAM)
+                       resource->vram_usage = buf->size;
+               else if (resource->domains & RADEON_DOMAIN_GTT)
+                       resource->gart_usage = buf->size;
+       }
+
+       if (rtex->cmask.size) {
+               /* Initialize the cmask to 0xCC (= compressed state). */
+               si_screen_clear_buffer(sscreen, &rtex->cmask_buffer->b.b,
+                                        rtex->cmask.offset, rtex->cmask.size,
+                                        0xCCCCCCCC);
+       }
+       if (rtex->htile_offset) {
+               uint32_t clear_value = 0;
+
+               if (sscreen->info.chip_class >= GFX9 || rtex->tc_compatible_htile)
+                       clear_value = 0x0000030F;
+
+               si_screen_clear_buffer(sscreen, &rtex->resource.b.b,
+                                        rtex->htile_offset,
+                                        rtex->surface.htile_size,
+                                        clear_value);
+       }
+
+       /* Initialize DCC only if the texture is not being imported. */
+       if (!buf && rtex->dcc_offset) {
+               si_screen_clear_buffer(sscreen, &rtex->resource.b.b,
+                                        rtex->dcc_offset,
+                                        rtex->surface.dcc_size,
+                                        0xFFFFFFFF);
+       }
+
+       /* Initialize the CMASK base register value. */
+       rtex->cmask.base_address_reg =
+               (rtex->resource.gpu_address + rtex->cmask.offset) >> 8;
+
+       if (sscreen->debug_flags & DBG(VM)) {
+               fprintf(stderr, "VM start=0x%"PRIX64"  end=0x%"PRIX64" | Texture %ix%ix%i, %i levels, %i samples, %s\n",
+                       rtex->resource.gpu_address,
+                       rtex->resource.gpu_address + rtex->resource.buf->size,
+                       base->width0, base->height0, util_num_layers(base, 0), base->last_level+1,
+                       base->nr_samples ? base->nr_samples : 1, util_format_short_name(base->format));
+       }
+
+       if (sscreen->debug_flags & DBG(TEX)) {
+               puts("Texture:");
+               struct u_log_context log;
+               u_log_context_init(&log);
+               si_print_texture_info(sscreen, rtex, &log);
+               u_log_new_page_print(&log, stdout);
+               fflush(stdout);
+               u_log_context_destroy(&log);
+       }
+
+       return rtex;
+}
+
+static enum radeon_surf_mode
+si_choose_tiling(struct si_screen *sscreen,
+                  const struct pipe_resource *templ)
+{
+       const struct util_format_description *desc = util_format_description(templ->format);
+       bool force_tiling = templ->flags & SI_RESOURCE_FLAG_FORCE_TILING;
+       bool is_depth_stencil = util_format_is_depth_or_stencil(templ->format) &&
+                               !(templ->flags & SI_RESOURCE_FLAG_FLUSHED_DEPTH);
+
+       /* MSAA resources must be 2D tiled. */
+       if (templ->nr_samples > 1)
+               return RADEON_SURF_MODE_2D;
+
+       /* Transfer resources should be linear. */
+       if (templ->flags & SI_RESOURCE_FLAG_TRANSFER)
+               return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+       /* Avoid Z/S decompress blits by forcing TC-compatible HTILE on VI,
+        * which requires 2D tiling.
+        */
+       if (sscreen->info.chip_class == VI &&
+           is_depth_stencil &&
+           (templ->flags & PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY))
+               return RADEON_SURF_MODE_2D;
+
+       /* Handle common candidates for the linear mode.
+        * Compressed textures and DB surfaces must always be tiled.
+        */
+       if (!force_tiling &&
+           !is_depth_stencil &&
+           !util_format_is_compressed(templ->format)) {
+               if (sscreen->debug_flags & DBG(NO_TILING))
+                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               /* Tiling doesn't work with the 422 (SUBSAMPLED) formats on R600+. */
+               if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED)
+                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               /* Cursors are linear on SI.
+                * (XXX double-check, maybe also use RADEON_SURF_SCANOUT) */
+               if (templ->bind & PIPE_BIND_CURSOR)
+                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               if (templ->bind & PIPE_BIND_LINEAR)
+                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               /* Textures with a very small height are recommended to be linear. */
+               if (templ->target == PIPE_TEXTURE_1D ||
+                   templ->target == PIPE_TEXTURE_1D_ARRAY ||
+                   /* Only very thin and long 2D textures should benefit from
+                    * linear_aligned. */
+                   (templ->width0 > 8 && templ->height0 <= 2))
+                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
+
+               /* Textures likely to be mapped often. */
+               if (templ->usage == PIPE_USAGE_STAGING ||
+                   templ->usage == PIPE_USAGE_STREAM)
+                       return RADEON_SURF_MODE_LINEAR_ALIGNED;
+       }
+
+       /* Make small textures 1D tiled. */
+       if (templ->width0 <= 16 || templ->height0 <= 16 ||
+           (sscreen->debug_flags & DBG(NO_2D_TILING)))
+               return RADEON_SURF_MODE_1D;
+
+       /* The allocator will switch to 1D if needed. */
+       return RADEON_SURF_MODE_2D;
+}
+
+struct pipe_resource *si_texture_create(struct pipe_screen *screen,
+                                       const struct pipe_resource *templ)
+{
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct radeon_surf surface = {0};
+       bool is_flushed_depth = templ->flags & SI_RESOURCE_FLAG_FLUSHED_DEPTH;
+       bool tc_compatible_htile =
+               sscreen->info.chip_class >= VI &&
+               (templ->flags & PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY) &&
+               !(sscreen->debug_flags & DBG(NO_HYPERZ)) &&
+               !is_flushed_depth &&
+               templ->nr_samples <= 1 && /* TC-compat HTILE is less efficient with MSAA */
+               util_format_is_depth_or_stencil(templ->format);
+
+       int r;
+
+       r = si_init_surface(sscreen, &surface, templ,
+                             si_choose_tiling(sscreen, templ), 0, 0,
+                             false, false, is_flushed_depth,
+                             tc_compatible_htile);
+       if (r) {
+               return NULL;
+       }
+
+       return (struct pipe_resource *)
+              si_texture_create_object(screen, templ, NULL, &surface);
+}
+
+static struct pipe_resource *si_texture_from_handle(struct pipe_screen *screen,
+                                                   const struct pipe_resource *templ,
+                                                   struct winsys_handle *whandle,
+                                                   unsigned usage)
+{
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct pb_buffer *buf = NULL;
+       unsigned stride = 0, offset = 0;
+       enum radeon_surf_mode array_mode;
+       struct radeon_surf surface = {};
+       int r;
+       struct radeon_bo_metadata metadata = {};
+       struct r600_texture *rtex;
+       bool is_scanout;
+
+       /* Support only 2D textures without mipmaps */
+       if ((templ->target != PIPE_TEXTURE_2D && templ->target != PIPE_TEXTURE_RECT) ||
+             templ->depth0 != 1 || templ->last_level != 0)
+               return NULL;
+
+       buf = sscreen->ws->buffer_from_handle(sscreen->ws, whandle, &stride, &offset);
+       if (!buf)
+               return NULL;
+
+       sscreen->ws->buffer_get_metadata(buf, &metadata);
+       si_surface_import_metadata(sscreen, &surface, &metadata,
+                                    &array_mode, &is_scanout);
+
+       r = si_init_surface(sscreen, &surface, templ, array_mode, stride,
+                             offset, true, is_scanout, false, false);
+       if (r) {
+               return NULL;
+       }
+
+       rtex = si_texture_create_object(screen, templ, buf, &surface);
+       if (!rtex)
+               return NULL;
+
+       rtex->resource.b.is_shared = true;
+       rtex->resource.external_usage = usage;
+
+       si_apply_opaque_metadata(sscreen, rtex, &metadata);
+
+       assert(rtex->surface.tile_swizzle == 0);
+       return &rtex->resource.b.b;
+}
+
+bool si_init_flushed_depth_texture(struct pipe_context *ctx,
+                                  struct pipe_resource *texture,
+                                  struct r600_texture **staging)
+{
+       struct r600_texture *rtex = (struct r600_texture*)texture;
+       struct pipe_resource resource;
+       struct r600_texture **flushed_depth_texture = staging ?
+                       staging : &rtex->flushed_depth_texture;
+       enum pipe_format pipe_format = texture->format;
+
+       if (!staging) {
+               if (rtex->flushed_depth_texture)
+                       return true; /* it's ready */
+
+               if (!rtex->can_sample_z && rtex->can_sample_s) {
+                       switch (pipe_format) {
+                       case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
+                               /* Save memory by not allocating the S plane. */
+                               pipe_format = PIPE_FORMAT_Z32_FLOAT;
+                               break;
+                       case PIPE_FORMAT_Z24_UNORM_S8_UINT:
+                       case PIPE_FORMAT_S8_UINT_Z24_UNORM:
+                               /* Save memory bandwidth by not copying the
+                                * stencil part during flush.
+                                *
+                                * This potentially increases memory bandwidth
+                                * if an application uses both Z and S texturing
+                                * simultaneously (a flushed Z24S8 texture
+                                * would be stored compactly), but how often
+                                * does that really happen?
+                                */
+                               pipe_format = PIPE_FORMAT_Z24X8_UNORM;
+                               break;
+                       default:;
+                       }
+               } else if (!rtex->can_sample_s && rtex->can_sample_z) {
+                       assert(util_format_has_stencil(util_format_description(pipe_format)));
+
+                       /* DB->CB copies to an 8bpp surface don't work. */
+                       pipe_format = PIPE_FORMAT_X24S8_UINT;
+               }
+       }
+
+       memset(&resource, 0, sizeof(resource));
+       resource.target = texture->target;
+       resource.format = pipe_format;
+       resource.width0 = texture->width0;
+       resource.height0 = texture->height0;
+       resource.depth0 = texture->depth0;
+       resource.array_size = texture->array_size;
+       resource.last_level = texture->last_level;
+       resource.nr_samples = texture->nr_samples;
+       resource.usage = staging ? PIPE_USAGE_STAGING : PIPE_USAGE_DEFAULT;
+       resource.bind = texture->bind & ~PIPE_BIND_DEPTH_STENCIL;
+       resource.flags = texture->flags | SI_RESOURCE_FLAG_FLUSHED_DEPTH;
+
+       if (staging)
+               resource.flags |= SI_RESOURCE_FLAG_TRANSFER;
+
+       *flushed_depth_texture = (struct r600_texture *)ctx->screen->resource_create(ctx->screen, &resource);
+       if (*flushed_depth_texture == NULL) {
+               PRINT_ERR("failed to create temporary texture to hold flushed depth\n");
+               return false;
+       }
+       return true;
+}
+
+/**
+ * Initialize the pipe_resource descriptor to be of the same size as the box,
+ * which is supposed to hold a subregion of the texture "orig" at the given
+ * mipmap level.
+ */
+static void si_init_temp_resource_from_box(struct pipe_resource *res,
+                                          struct pipe_resource *orig,
+                                          const struct pipe_box *box,
+                                          unsigned level, unsigned flags)
+{
+       memset(res, 0, sizeof(*res));
+       res->format = orig->format;
+       res->width0 = box->width;
+       res->height0 = box->height;
+       res->depth0 = 1;
+       res->array_size = 1;
+       res->usage = flags & SI_RESOURCE_FLAG_TRANSFER ? PIPE_USAGE_STAGING : PIPE_USAGE_DEFAULT;
+       res->flags = flags;
+
+       /* We must set the correct texture target and dimensions for a 3D box. */
+       if (box->depth > 1 && util_max_layer(orig, level) > 0) {
+               res->target = PIPE_TEXTURE_2D_ARRAY;
+               res->array_size = box->depth;
+       } else {
+               res->target = PIPE_TEXTURE_2D;
+       }
+}
+
+static bool si_can_invalidate_texture(struct si_screen *sscreen,
+                                     struct r600_texture *rtex,
+                                     unsigned transfer_usage,
+                                     const struct pipe_box *box)
+{
+       return !rtex->resource.b.is_shared &&
+               !(transfer_usage & PIPE_TRANSFER_READ) &&
+               rtex->resource.b.b.last_level == 0 &&
+               util_texrange_covers_whole_level(&rtex->resource.b.b, 0,
+                                                box->x, box->y, box->z,
+                                                box->width, box->height,
+                                                box->depth);
+}
+
+static void si_texture_invalidate_storage(struct si_context *sctx,
+                                         struct r600_texture *rtex)
+{
+       struct si_screen *sscreen = sctx->screen;
+
+       /* There is no point in discarding depth and tiled buffers. */
+       assert(!rtex->is_depth);
+       assert(rtex->surface.is_linear);
+
+       /* Reallocate the buffer in the same pipe_resource. */
+       si_alloc_resource(sscreen, &rtex->resource);
+
+       /* Initialize the CMASK base address (needed even without CMASK). */
+       rtex->cmask.base_address_reg =
+               (rtex->resource.gpu_address + rtex->cmask.offset) >> 8;
+
+       p_atomic_inc(&sscreen->dirty_tex_counter);
+
+       sctx->b.num_alloc_tex_transfer_bytes += rtex->size;
+}
+
+static void *si_texture_transfer_map(struct pipe_context *ctx,
+                                    struct pipe_resource *texture,
+                                    unsigned level,
+                                    unsigned usage,
+                                    const struct pipe_box *box,
+                                    struct pipe_transfer **ptransfer)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_texture *rtex = (struct r600_texture*)texture;
+       struct r600_transfer *trans;
+       struct r600_resource *buf;
+       unsigned offset = 0;
+       char *map;
+       bool use_staging_texture = false;
+
+       assert(!(texture->flags & SI_RESOURCE_FLAG_TRANSFER));
+       assert(box->width && box->height && box->depth);
+
+       /* Depth textures use staging unconditionally. */
+       if (!rtex->is_depth) {
+               /* Degrade the tile mode if we get too many transfers on APUs.
+                * On dGPUs, the staging texture is always faster.
+                * Only count uploads that are at least 4x4 pixels large.
+                */
+               if (!sctx->screen->info.has_dedicated_vram &&
+                   level == 0 &&
+                   box->width >= 4 && box->height >= 4 &&
+                   p_atomic_inc_return(&rtex->num_level0_transfers) == 10) {
+                       bool can_invalidate =
+                               si_can_invalidate_texture(sctx->screen, rtex,
+                                                           usage, box);
+
+                       si_reallocate_texture_inplace(sctx, rtex,
+                                                       PIPE_BIND_LINEAR,
+                                                       can_invalidate);
+               }
+
+               /* Tiled textures need to be converted into a linear texture for CPU
+                * access. The staging texture is always linear and is placed in GART.
+                *
+                * Reading from VRAM or GTT WC is slow, always use the staging
+                * texture in this case.
+                *
+                * Use the staging texture for uploads if the underlying BO
+                * is busy.
+                */
+               if (!rtex->surface.is_linear)
+                       use_staging_texture = true;
+               else if (usage & PIPE_TRANSFER_READ)
+                       use_staging_texture =
+                               rtex->resource.domains & RADEON_DOMAIN_VRAM ||
+                               rtex->resource.flags & RADEON_FLAG_GTT_WC;
+               /* Write & linear only: */
+               else if (si_rings_is_buffer_referenced(sctx, rtex->resource.buf,
+                                                      RADEON_USAGE_READWRITE) ||
+                        !sctx->b.ws->buffer_wait(rtex->resource.buf, 0,
+                                               RADEON_USAGE_READWRITE)) {
+                       /* It's busy. */
+                       if (si_can_invalidate_texture(sctx->screen, rtex,
+                                                       usage, box))
+                               si_texture_invalidate_storage(sctx, rtex);
+                       else
+                               use_staging_texture = true;
+               }
+       }
+
+       trans = CALLOC_STRUCT(r600_transfer);
+       if (!trans)
+               return NULL;
+       pipe_resource_reference(&trans->b.b.resource, texture);
+       trans->b.b.level = level;
+       trans->b.b.usage = usage;
+       trans->b.b.box = *box;
+
+       if (rtex->is_depth) {
+               struct r600_texture *staging_depth;
+
+               if (rtex->resource.b.b.nr_samples > 1) {
+                       /* MSAA depth buffers need to be converted to single sample buffers.
+                        *
+                        * Mapping MSAA depth buffers can occur if ReadPixels is called
+                        * with a multisample GLX visual.
+                        *
+                        * First downsample the depth buffer to a temporary texture,
+                        * then decompress the temporary one to staging.
+                        *
+                        * Only the region being mapped is transfered.
+                        */
+                       struct pipe_resource resource;
+
+                       si_init_temp_resource_from_box(&resource, texture, box, level, 0);
+
+                       if (!si_init_flushed_depth_texture(ctx, &resource, &staging_depth)) {
+                               PRINT_ERR("failed to create temporary texture to hold untiled copy\n");
+                               FREE(trans);
+                               return NULL;
+                       }
+
+                       if (usage & PIPE_TRANSFER_READ) {
+                               struct pipe_resource *temp = ctx->screen->resource_create(ctx->screen, &resource);
+                               if (!temp) {
+                                       PRINT_ERR("failed to create a temporary depth texture\n");
+                                       FREE(trans);
+                                       return NULL;
+                               }
+
+                               si_copy_region_with_blit(ctx, temp, 0, 0, 0, 0, texture, level, box);
+                               si_blit_decompress_depth(ctx, (struct r600_texture*)temp, staging_depth,
+                                                        0, 0, 0, box->depth, 0, 0);
+                               pipe_resource_reference(&temp, NULL);
+                       }
+
+                       /* Just get the strides. */
+                       si_texture_get_offset(sctx->screen, staging_depth, level, NULL,
+                                               &trans->b.b.stride,
+                                               &trans->b.b.layer_stride);
+               } else {
+                       /* XXX: only readback the rectangle which is being mapped? */
+                       /* XXX: when discard is true, no need to read back from depth texture */
+                       if (!si_init_flushed_depth_texture(ctx, texture, &staging_depth)) {
+                               PRINT_ERR("failed to create temporary texture to hold untiled copy\n");
+                               FREE(trans);
+                               return NULL;
+                       }
+
+                       si_blit_decompress_depth(ctx, rtex, staging_depth,
+                                                level, level,
+                                                box->z, box->z + box->depth - 1,
+                                                0, 0);
+
+                       offset = si_texture_get_offset(sctx->screen, staging_depth,
+                                                        level, box,
+                                                        &trans->b.b.stride,
+                                                        &trans->b.b.layer_stride);
+               }
+
+               trans->staging = (struct r600_resource*)staging_depth;
+               buf = trans->staging;
+       } else if (use_staging_texture) {
+               struct pipe_resource resource;
+               struct r600_texture *staging;
+
+               si_init_temp_resource_from_box(&resource, texture, box, level,
+                                                SI_RESOURCE_FLAG_TRANSFER);
+               resource.usage = (usage & PIPE_TRANSFER_READ) ?
+                       PIPE_USAGE_STAGING : PIPE_USAGE_STREAM;
+
+               /* Create the temporary texture. */
+               staging = (struct r600_texture*)ctx->screen->resource_create(ctx->screen, &resource);
+               if (!staging) {
+                       PRINT_ERR("failed to create temporary texture to hold untiled copy\n");
+                       FREE(trans);
+                       return NULL;
+               }
+               trans->staging = &staging->resource;
+
+               /* Just get the strides. */
+               si_texture_get_offset(sctx->screen, staging, 0, NULL,
+                                       &trans->b.b.stride,
+                                       &trans->b.b.layer_stride);
+
+               if (usage & PIPE_TRANSFER_READ)
+                       si_copy_to_staging_texture(ctx, trans);
+               else
+                       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
+
+               buf = trans->staging;
+       } else {
+               /* the resource is mapped directly */
+               offset = si_texture_get_offset(sctx->screen, rtex, level, box,
+                                                &trans->b.b.stride,
+                                                &trans->b.b.layer_stride);
+               buf = &rtex->resource;
+       }
+
+       if (!(map = si_buffer_map_sync_with_rings(sctx, buf, usage))) {
+               r600_resource_reference(&trans->staging, NULL);
+               FREE(trans);
+               return NULL;
+       }
+
+       *ptransfer = &trans->b.b;
+       return map + offset;
+}
+
+static void si_texture_transfer_unmap(struct pipe_context *ctx,
+                                     struct pipe_transfer* transfer)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
+       struct pipe_resource *texture = transfer->resource;
+       struct r600_texture *rtex = (struct r600_texture*)texture;
+
+       if ((transfer->usage & PIPE_TRANSFER_WRITE) && rtransfer->staging) {
+               if (rtex->is_depth && rtex->resource.b.b.nr_samples <= 1) {
+                       ctx->resource_copy_region(ctx, texture, transfer->level,
+                                                 transfer->box.x, transfer->box.y, transfer->box.z,
+                                                 &rtransfer->staging->b.b, transfer->level,
+                                                 &transfer->box);
+               } else {
+                       si_copy_from_staging_texture(ctx, rtransfer);
+               }
+       }
+
+       if (rtransfer->staging) {
+               sctx->b.num_alloc_tex_transfer_bytes += rtransfer->staging->buf->size;
+               r600_resource_reference(&rtransfer->staging, NULL);
+       }
+
+       /* Heuristic for {upload, draw, upload, draw, ..}:
+        *
+        * Flush the gfx IB if we've allocated too much texture storage.
+        *
+        * The idea is that we don't want to build IBs that use too much
+        * memory and put pressure on the kernel memory manager and we also
+        * want to make temporary and invalidated buffers go idle ASAP to
+        * decrease the total memory usage or make them reusable. The memory
+        * usage will be slightly higher than given here because of the buffer
+        * cache in the winsys.
+        *
+        * The result is that the kernel memory manager is never a bottleneck.
+        */
+       if (sctx->b.num_alloc_tex_transfer_bytes > sctx->screen->info.gart_size / 4) {
+               si_flush_gfx_cs(sctx, PIPE_FLUSH_ASYNC, NULL);
+               sctx->b.num_alloc_tex_transfer_bytes = 0;
+       }
+
+       pipe_resource_reference(&transfer->resource, NULL);
+       FREE(transfer);
+}
+
+static const struct u_resource_vtbl si_texture_vtbl =
+{
+       NULL,                           /* get_handle */
+       si_texture_destroy,             /* resource_destroy */
+       si_texture_transfer_map,        /* transfer_map */
+       u_default_transfer_flush_region, /* transfer_flush_region */
+       si_texture_transfer_unmap,      /* transfer_unmap */
+};
+
+/* DCC channel type categories within which formats can be reinterpreted
+ * while keeping the same DCC encoding. The swizzle must also match. */
+enum dcc_channel_type {
+       dcc_channel_float,
+       /* uint and sint can be merged if we never use TC-compatible DCC clear
+        * encoding with the clear value of 1. */
+       dcc_channel_uint,
+       dcc_channel_sint,
+       dcc_channel_uint_10_10_10_2,
+       dcc_channel_incompatible,
+};
+
+/* Return the type of DCC encoding. */
+static enum dcc_channel_type
+vi_get_dcc_channel_type(const struct util_format_description *desc)
+{
+       int i;
+
+       /* Find the first non-void channel. */
+       for (i = 0; i < desc->nr_channels; i++)
+               if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID)
+                       break;
+       if (i == desc->nr_channels)
+               return dcc_channel_incompatible;
+
+       switch (desc->channel[i].size) {
+       case 32:
+       case 16:
+       case 8:
+               if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
+                       return dcc_channel_float;
+               if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
+                       return dcc_channel_uint;
+               return dcc_channel_sint;
+       case 10:
+               return dcc_channel_uint_10_10_10_2;
+       default:
+               return dcc_channel_incompatible;
+       }
+}
+
+/* Return if it's allowed to reinterpret one format as another with DCC enabled. */
+bool vi_dcc_formats_compatible(enum pipe_format format1,
+                              enum pipe_format format2)
+{
+       const struct util_format_description *desc1, *desc2;
+       enum dcc_channel_type type1, type2;
+       int i;
+
+       if (format1 == format2)
+               return true;
+
+       desc1 = util_format_description(format1);
+       desc2 = util_format_description(format2);
+
+       if (desc1->nr_channels != desc2->nr_channels)
+               return false;
+
+       /* Swizzles must be the same. */
+       for (i = 0; i < desc1->nr_channels; i++)
+               if (desc1->swizzle[i] <= PIPE_SWIZZLE_W &&
+                   desc2->swizzle[i] <= PIPE_SWIZZLE_W &&
+                   desc1->swizzle[i] != desc2->swizzle[i])
+                       return false;
+
+       type1 = vi_get_dcc_channel_type(desc1);
+       type2 = vi_get_dcc_channel_type(desc2);
+
+       return type1 != dcc_channel_incompatible &&
+              type2 != dcc_channel_incompatible &&
+              type1 == type2;
+}
+
+bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,
+                                    unsigned level,
+                                    enum pipe_format view_format)
+{
+       struct r600_texture *rtex = (struct r600_texture *)tex;
+
+       return vi_dcc_enabled(rtex, level) &&
+              !vi_dcc_formats_compatible(tex->format, view_format);
+}
+
+/* This can't be merged with the above function, because
+ * vi_dcc_formats_compatible should be called only when DCC is enabled. */
+void vi_disable_dcc_if_incompatible_format(struct si_context *sctx,
+                                          struct pipe_resource *tex,
+                                          unsigned level,
+                                          enum pipe_format view_format)
+{
+       struct r600_texture *rtex = (struct r600_texture *)tex;
+
+       if (vi_dcc_formats_are_incompatible(tex, level, view_format))
+               if (!si_texture_disable_dcc(sctx, (struct r600_texture*)tex))
+                       si_decompress_dcc(sctx, rtex);
+}
+
+struct pipe_surface *si_create_surface_custom(struct pipe_context *pipe,
+                                             struct pipe_resource *texture,
+                                             const struct pipe_surface *templ,
+                                             unsigned width0, unsigned height0,
+                                             unsigned width, unsigned height)
+{
+       struct r600_surface *surface = CALLOC_STRUCT(r600_surface);
+
+       if (!surface)
+               return NULL;
+
+       assert(templ->u.tex.first_layer <= util_max_layer(texture, templ->u.tex.level));
+       assert(templ->u.tex.last_layer <= util_max_layer(texture, templ->u.tex.level));
+
+       pipe_reference_init(&surface->base.reference, 1);
+       pipe_resource_reference(&surface->base.texture, texture);
+       surface->base.context = pipe;
+       surface->base.format = templ->format;
+       surface->base.width = width;
+       surface->base.height = height;
+       surface->base.u = templ->u;
+
+       surface->width0 = width0;
+       surface->height0 = height0;
+
+       surface->dcc_incompatible =
+               texture->target != PIPE_BUFFER &&
+               vi_dcc_formats_are_incompatible(texture, templ->u.tex.level,
+                                               templ->format);
+       return &surface->base;
+}
+
+static struct pipe_surface *si_create_surface(struct pipe_context *pipe,
+                                             struct pipe_resource *tex,
+                                             const struct pipe_surface *templ)
+{
+       unsigned level = templ->u.tex.level;
+       unsigned width = u_minify(tex->width0, level);
+       unsigned height = u_minify(tex->height0, level);
+       unsigned width0 = tex->width0;
+       unsigned height0 = tex->height0;
+
+       if (tex->target != PIPE_BUFFER && templ->format != tex->format) {
+               const struct util_format_description *tex_desc
+                       = util_format_description(tex->format);
+               const struct util_format_description *templ_desc
+                       = util_format_description(templ->format);
+
+               assert(tex_desc->block.bits == templ_desc->block.bits);
+
+               /* Adjust size of surface if and only if the block width or
+                * height is changed. */
+               if (tex_desc->block.width != templ_desc->block.width ||
+                   tex_desc->block.height != templ_desc->block.height) {
+                       unsigned nblks_x = util_format_get_nblocksx(tex->format, width);
+                       unsigned nblks_y = util_format_get_nblocksy(tex->format, height);
+
+                       width = nblks_x * templ_desc->block.width;
+                       height = nblks_y * templ_desc->block.height;
+
+                       width0 = util_format_get_nblocksx(tex->format, width0);
+                       height0 = util_format_get_nblocksy(tex->format, height0);
+               }
+       }
+
+       return si_create_surface_custom(pipe, tex, templ,
+                                         width0, height0,
+                                         width, height);
+}
+
+static void si_surface_destroy(struct pipe_context *pipe,
+                              struct pipe_surface *surface)
+{
+       pipe_resource_reference(&surface->texture, NULL);
+       FREE(surface);
+}
+
+unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap)
+{
+       const struct util_format_description *desc = util_format_description(format);
+
+#define HAS_SWIZZLE(chan,swz) (desc->swizzle[chan] == PIPE_SWIZZLE_##swz)
+
+       if (format == PIPE_FORMAT_R11G11B10_FLOAT) /* isn't plain */
+               return V_028C70_SWAP_STD;
+
+       if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
+               return ~0U;
+
+       switch (desc->nr_channels) {
+       case 1:
+               if (HAS_SWIZZLE(0,X))
+                       return V_028C70_SWAP_STD; /* X___ */
+               else if (HAS_SWIZZLE(3,X))
+                       return V_028C70_SWAP_ALT_REV; /* ___X */
+               break;
+       case 2:
+               if ((HAS_SWIZZLE(0,X) && HAS_SWIZZLE(1,Y)) ||
+                   (HAS_SWIZZLE(0,X) && HAS_SWIZZLE(1,NONE)) ||
+                   (HAS_SWIZZLE(0,NONE) && HAS_SWIZZLE(1,Y)))
+                       return V_028C70_SWAP_STD; /* XY__ */
+               else if ((HAS_SWIZZLE(0,Y) && HAS_SWIZZLE(1,X)) ||
+                        (HAS_SWIZZLE(0,Y) && HAS_SWIZZLE(1,NONE)) ||
+                        (HAS_SWIZZLE(0,NONE) && HAS_SWIZZLE(1,X)))
+                       /* YX__ */
+                       return (do_endian_swap ? V_028C70_SWAP_STD : V_028C70_SWAP_STD_REV);
+               else if (HAS_SWIZZLE(0,X) && HAS_SWIZZLE(3,Y))
+                       return V_028C70_SWAP_ALT; /* X__Y */
+               else if (HAS_SWIZZLE(0,Y) && HAS_SWIZZLE(3,X))
+                       return V_028C70_SWAP_ALT_REV; /* Y__X */
+               break;
+       case 3:
+               if (HAS_SWIZZLE(0,X))
+                       return (do_endian_swap ? V_028C70_SWAP_STD_REV : V_028C70_SWAP_STD);
+               else if (HAS_SWIZZLE(0,Z))
+                       return V_028C70_SWAP_STD_REV; /* ZYX */
+               break;
+       case 4:
+               /* check the middle channels, the 1st and 4th channel can be NONE */
+               if (HAS_SWIZZLE(1,Y) && HAS_SWIZZLE(2,Z)) {
+                       return V_028C70_SWAP_STD; /* XYZW */
+               } else if (HAS_SWIZZLE(1,Z) && HAS_SWIZZLE(2,Y)) {
+                       return V_028C70_SWAP_STD_REV; /* WZYX */
+               } else if (HAS_SWIZZLE(1,Y) && HAS_SWIZZLE(2,X)) {
+                       return V_028C70_SWAP_ALT; /* ZYXW */
+               } else if (HAS_SWIZZLE(1,Z) && HAS_SWIZZLE(2,W)) {
+                       /* YZWX */
+                       if (desc->is_array)
+                               return V_028C70_SWAP_ALT_REV;
+                       else
+                               return (do_endian_swap ? V_028C70_SWAP_ALT : V_028C70_SWAP_ALT_REV);
+               }
+               break;
+       }
+       return ~0U;
+}
+
+/* PIPELINE_STAT-BASED DCC ENABLEMENT FOR DISPLAYABLE SURFACES */
+
+static void vi_dcc_clean_up_context_slot(struct si_context *sctx,
+                                        int slot)
+{
+       int i;
+
+       if (sctx->b.dcc_stats[slot].query_active)
+               vi_separate_dcc_stop_query(sctx,
+                                          sctx->b.dcc_stats[slot].tex);
+
+       for (i = 0; i < ARRAY_SIZE(sctx->b.dcc_stats[slot].ps_stats); i++)
+               if (sctx->b.dcc_stats[slot].ps_stats[i]) {
+                       sctx->b.b.destroy_query(&sctx->b.b,
+                                             sctx->b.dcc_stats[slot].ps_stats[i]);
+                       sctx->b.dcc_stats[slot].ps_stats[i] = NULL;
+               }
+
+       r600_texture_reference(&sctx->b.dcc_stats[slot].tex, NULL);
+}
+
+/**
+ * Return the per-context slot where DCC statistics queries for the texture live.
+ */
+static unsigned vi_get_context_dcc_stats_index(struct si_context *sctx,
+                                              struct r600_texture *tex)
+{
+       int i, empty_slot = -1;
+
+       /* Remove zombie textures (textures kept alive by this array only). */
+       for (i = 0; i < ARRAY_SIZE(sctx->b.dcc_stats); i++)
+               if (sctx->b.dcc_stats[i].tex &&
+                   sctx->b.dcc_stats[i].tex->resource.b.b.reference.count == 1)
+                       vi_dcc_clean_up_context_slot(sctx, i);
+
+       /* Find the texture. */
+       for (i = 0; i < ARRAY_SIZE(sctx->b.dcc_stats); i++) {
+               /* Return if found. */
+               if (sctx->b.dcc_stats[i].tex == tex) {
+                       sctx->b.dcc_stats[i].last_use_timestamp = os_time_get();
+                       return i;
+               }
+
+               /* Record the first seen empty slot. */
+               if (empty_slot == -1 && !sctx->b.dcc_stats[i].tex)
+                       empty_slot = i;
+       }
+
+       /* Not found. Remove the oldest member to make space in the array. */
+       if (empty_slot == -1) {
+               int oldest_slot = 0;
+
+               /* Find the oldest slot. */
+               for (i = 1; i < ARRAY_SIZE(sctx->b.dcc_stats); i++)
+                       if (sctx->b.dcc_stats[oldest_slot].last_use_timestamp >
+                           sctx->b.dcc_stats[i].last_use_timestamp)
+                               oldest_slot = i;
+
+               /* Clean up the oldest slot. */
+               vi_dcc_clean_up_context_slot(sctx, oldest_slot);
+               empty_slot = oldest_slot;
+       }
+
+       /* Add the texture to the new slot. */
+       r600_texture_reference(&sctx->b.dcc_stats[empty_slot].tex, tex);
+       sctx->b.dcc_stats[empty_slot].last_use_timestamp = os_time_get();
+       return empty_slot;
+}
+
+static struct pipe_query *
+vi_create_resuming_pipestats_query(struct si_context *sctx)
+{
+       struct si_query_hw *query = (struct si_query_hw*)
+               sctx->b.b.create_query(&sctx->b.b, PIPE_QUERY_PIPELINE_STATISTICS, 0);
+
+       query->flags |= SI_QUERY_HW_FLAG_BEGIN_RESUMES;
+       return (struct pipe_query*)query;
+}
+
+/**
+ * Called when binding a color buffer.
+ */
+void vi_separate_dcc_start_query(struct si_context *sctx,
+                                struct r600_texture *tex)
+{
+       unsigned i = vi_get_context_dcc_stats_index(sctx, tex);
+
+       assert(!sctx->b.dcc_stats[i].query_active);
+
+       if (!sctx->b.dcc_stats[i].ps_stats[0])
+               sctx->b.dcc_stats[i].ps_stats[0] = vi_create_resuming_pipestats_query(sctx);
+
+       /* begin or resume the query */
+       sctx->b.b.begin_query(&sctx->b.b, sctx->b.dcc_stats[i].ps_stats[0]);
+       sctx->b.dcc_stats[i].query_active = true;
+}
+
+/**
+ * Called when unbinding a color buffer.
+ */
+void vi_separate_dcc_stop_query(struct si_context *sctx,
+                               struct r600_texture *tex)
+{
+       unsigned i = vi_get_context_dcc_stats_index(sctx, tex);
+
+       assert(sctx->b.dcc_stats[i].query_active);
+       assert(sctx->b.dcc_stats[i].ps_stats[0]);
+
+       /* pause or end the query */
+       sctx->b.b.end_query(&sctx->b.b, sctx->b.dcc_stats[i].ps_stats[0]);
+       sctx->b.dcc_stats[i].query_active = false;
+}
+
+static bool vi_should_enable_separate_dcc(struct r600_texture *tex)
+{
+       /* The minimum number of fullscreen draws per frame that is required
+        * to enable DCC. */
+       return tex->ps_draw_ratio + tex->num_slow_clears >= 5;
+}
+
+/* Called by fast clear. */
+void vi_separate_dcc_try_enable(struct si_context *sctx,
+                               struct r600_texture *tex)
+{
+       /* The intent is to use this with shared displayable back buffers,
+        * but it's not strictly limited only to them.
+        */
+       if (!tex->resource.b.is_shared ||
+           !(tex->resource.external_usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH) ||
+           tex->resource.b.b.target != PIPE_TEXTURE_2D ||
+           tex->resource.b.b.last_level > 0 ||
+           !tex->surface.dcc_size)
+               return;
+
+       if (tex->dcc_offset)
+               return; /* already enabled */
+
+       /* Enable the DCC stat gathering. */
+       if (!tex->dcc_gather_statistics) {
+               tex->dcc_gather_statistics = true;
+               vi_separate_dcc_start_query(sctx, tex);
+       }
+
+       if (!vi_should_enable_separate_dcc(tex))
+               return; /* stats show that DCC decompression is too expensive */
+
+       assert(tex->surface.num_dcc_levels);
+       assert(!tex->dcc_separate_buffer);
+
+       si_texture_discard_cmask(sctx->screen, tex);
+
+       /* Get a DCC buffer. */
+       if (tex->last_dcc_separate_buffer) {
+               assert(tex->dcc_gather_statistics);
+               assert(!tex->dcc_separate_buffer);
+               tex->dcc_separate_buffer = tex->last_dcc_separate_buffer;
+               tex->last_dcc_separate_buffer = NULL;
+       } else {
+               tex->dcc_separate_buffer = (struct r600_resource*)
+                       si_aligned_buffer_create(sctx->b.b.screen,
+                                                  SI_RESOURCE_FLAG_UNMAPPABLE,
+                                                  PIPE_USAGE_DEFAULT,
+                                                  tex->surface.dcc_size,
+                                                  tex->surface.dcc_alignment);
+               if (!tex->dcc_separate_buffer)
+                       return;
+       }
+
+       /* dcc_offset is the absolute GPUVM address. */
+       tex->dcc_offset = tex->dcc_separate_buffer->gpu_address;
+
+       /* no need to flag anything since this is called by fast clear that
+        * flags framebuffer state
+        */
+}
+
+/**
+ * Called by pipe_context::flush_resource, the place where DCC decompression
+ * takes place.
+ */
+void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
+                                            struct r600_texture *tex)
+{
+       struct si_context *sctx = (struct si_context*)ctx;
+       struct pipe_query *tmp;
+       unsigned i = vi_get_context_dcc_stats_index(sctx, tex);
+       bool query_active = sctx->b.dcc_stats[i].query_active;
+       bool disable = false;
+
+       if (sctx->b.dcc_stats[i].ps_stats[2]) {
+               union pipe_query_result result;
+
+               /* Read the results. */
+               ctx->get_query_result(ctx, sctx->b.dcc_stats[i].ps_stats[2],
+                                     true, &result);
+               si_query_hw_reset_buffers(sctx,
+                                         (struct si_query_hw*)
+                                         sctx->b.dcc_stats[i].ps_stats[2]);
+
+               /* Compute the approximate number of fullscreen draws. */
+               tex->ps_draw_ratio =
+                       result.pipeline_statistics.ps_invocations /
+                       (tex->resource.b.b.width0 * tex->resource.b.b.height0);
+               sctx->b.last_tex_ps_draw_ratio = tex->ps_draw_ratio;
+
+               disable = tex->dcc_separate_buffer &&
+                         !vi_should_enable_separate_dcc(tex);
+       }
+
+       tex->num_slow_clears = 0;
+
+       /* stop the statistics query for ps_stats[0] */
+       if (query_active)
+               vi_separate_dcc_stop_query(sctx, tex);
+
+       /* Move the queries in the queue by one. */
+       tmp = sctx->b.dcc_stats[i].ps_stats[2];
+       sctx->b.dcc_stats[i].ps_stats[2] = sctx->b.dcc_stats[i].ps_stats[1];
+       sctx->b.dcc_stats[i].ps_stats[1] = sctx->b.dcc_stats[i].ps_stats[0];
+       sctx->b.dcc_stats[i].ps_stats[0] = tmp;
+
+       /* create and start a new query as ps_stats[0] */
+       if (query_active)
+               vi_separate_dcc_start_query(sctx, tex);
+
+       if (disable) {
+               assert(!tex->last_dcc_separate_buffer);
+               tex->last_dcc_separate_buffer = tex->dcc_separate_buffer;
+               tex->dcc_separate_buffer = NULL;
+               tex->dcc_offset = 0;
+               /* no need to flag anything since this is called after
+                * decompression that re-sets framebuffer state
+                */
+       }
+}
+
+static struct pipe_memory_object *
+si_memobj_from_handle(struct pipe_screen *screen,
+                     struct winsys_handle *whandle,
+                     bool dedicated)
+{
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct r600_memory_object *memobj = CALLOC_STRUCT(r600_memory_object);
+       struct pb_buffer *buf = NULL;
+       uint32_t stride, offset;
+
+       if (!memobj)
+               return NULL;
+
+       buf = sscreen->ws->buffer_from_handle(sscreen->ws, whandle,
+                                             &stride, &offset);
+       if (!buf) {
+               free(memobj);
+               return NULL;
+       }
+
+       memobj->b.dedicated = dedicated;
+       memobj->buf = buf;
+       memobj->stride = stride;
+       memobj->offset = offset;
+
+       return (struct pipe_memory_object *)memobj;
+
+}
+
+static void
+si_memobj_destroy(struct pipe_screen *screen,
+                 struct pipe_memory_object *_memobj)
+{
+       struct r600_memory_object *memobj = (struct r600_memory_object *)_memobj;
+
+       pb_reference(&memobj->buf, NULL);
+       free(memobj);
+}
+
+static struct pipe_resource *
+si_texture_from_memobj(struct pipe_screen *screen,
+                      const struct pipe_resource *templ,
+                      struct pipe_memory_object *_memobj,
+                      uint64_t offset)
+{
+       int r;
+       struct si_screen *sscreen = (struct si_screen*)screen;
+       struct r600_memory_object *memobj = (struct r600_memory_object *)_memobj;
+       struct r600_texture *rtex;
+       struct radeon_surf surface = {};
+       struct radeon_bo_metadata metadata = {};
+       enum radeon_surf_mode array_mode;
+       bool is_scanout;
+       struct pb_buffer *buf = NULL;
+
+       if (memobj->b.dedicated) {
+               sscreen->ws->buffer_get_metadata(memobj->buf, &metadata);
+               si_surface_import_metadata(sscreen, &surface, &metadata,
+                                    &array_mode, &is_scanout);
+       } else {
+               /**
+                * The bo metadata is unset for un-dedicated images. So we fall
+                * back to linear. See answer to question 5 of the
+                * VK_KHX_external_memory spec for some details.
+                *
+                * It is possible that this case isn't going to work if the
+                * surface pitch isn't correctly aligned by default.
+                *
+                * In order to support it correctly we require multi-image
+                * metadata to be syncrhonized between radv and radeonsi. The
+                * semantics of associating multiple image metadata to a memory
+                * object on the vulkan export side are not concretely defined
+                * either.
+                *
+                * All the use cases we are aware of at the moment for memory
+                * objects use dedicated allocations. So lets keep the initial
+                * implementation simple.
+                *
+                * A possible alternative is to attempt to reconstruct the
+                * tiling information when the TexParameter TEXTURE_TILING_EXT
+                * is set.
+                */
+               array_mode = RADEON_SURF_MODE_LINEAR_ALIGNED;
+               is_scanout = false;
+
+       }
+
+       r = si_init_surface(sscreen, &surface, templ,
+                             array_mode, memobj->stride,
+                             offset, true, is_scanout,
+                             false, false);
+       if (r)
+               return NULL;
+
+       rtex = si_texture_create_object(screen, templ, memobj->buf, &surface);
+       if (!rtex)
+               return NULL;
+
+       /* r600_texture_create_object doesn't increment refcount of
+        * memobj->buf, so increment it here.
+        */
+       pb_reference(&buf, memobj->buf);
+
+       rtex->resource.b.is_shared = true;
+       rtex->resource.external_usage = PIPE_HANDLE_USAGE_READ_WRITE;
+
+       si_apply_opaque_metadata(sscreen, rtex, &metadata);
+
+       return &rtex->resource.b.b;
+}
+
+static bool si_check_resource_capability(struct pipe_screen *screen,
+                                        struct pipe_resource *resource,
+                                        unsigned bind)
+{
+       struct r600_texture *tex = (struct r600_texture*)resource;
+
+       /* Buffers only support the linear flag. */
+       if (resource->target == PIPE_BUFFER)
+               return (bind & ~PIPE_BIND_LINEAR) == 0;
+
+       if (bind & PIPE_BIND_LINEAR && !tex->surface.is_linear)
+               return false;
+
+       if (bind & PIPE_BIND_SCANOUT && !tex->surface.is_displayable)
+               return false;
+
+       /* TODO: PIPE_BIND_CURSOR - do we care? */
+       return true;
+}
+
+void si_init_screen_texture_functions(struct si_screen *sscreen)
+{
+       sscreen->b.resource_from_handle = si_texture_from_handle;
+       sscreen->b.resource_get_handle = si_texture_get_handle;
+       sscreen->b.resource_from_memobj = si_texture_from_memobj;
+       sscreen->b.memobj_create_from_handle = si_memobj_from_handle;
+       sscreen->b.memobj_destroy = si_memobj_destroy;
+       sscreen->b.check_resource_capability = si_check_resource_capability;
+}
+
+void si_init_context_texture_functions(struct si_context *sctx)
+{
+       sctx->b.b.create_surface = si_create_surface;
+       sctx->b.b.surface_destroy = si_surface_destroy;
+}