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path: root/src/gallium/drivers/virgl/virgl_buffer.c
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Diffstat (limited to 'src/gallium/drivers/virgl/virgl_buffer.c')
-rw-r--r--src/gallium/drivers/virgl/virgl_buffer.c170
1 files changed, 170 insertions, 0 deletions
diff --git a/src/gallium/drivers/virgl/virgl_buffer.c b/src/gallium/drivers/virgl/virgl_buffer.c
new file mode 100644
index 00000000000..93fb29598a9
--- /dev/null
+++ b/src/gallium/drivers/virgl/virgl_buffer.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright 2014, 2015 Red Hat.
+ *
+ * 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 "util/u_memory.h"
+#include "virgl_context.h"
+#include "virgl_resource.h"
+
+static void virgl_buffer_destroy(struct pipe_screen *screen,
+ struct pipe_resource *buf)
+{
+ struct virgl_screen *vs = virgl_screen(screen);
+ struct virgl_buffer *vbuf = virgl_buffer(buf);
+
+ util_range_destroy(&vbuf->valid_buffer_range);
+ vs->vws->resource_unref(vs->vws, vbuf->base.hw_res);
+ FREE(vbuf);
+}
+
+static void *virgl_buffer_transfer_map(struct pipe_context *ctx,
+ struct pipe_resource *resource,
+ unsigned level,
+ unsigned usage,
+ const struct pipe_box *box,
+ struct pipe_transfer **transfer)
+{
+ struct virgl_context *vctx = (struct virgl_context *)ctx;
+ struct virgl_screen *vs = virgl_screen(ctx->screen);
+ struct virgl_buffer *vbuf = virgl_buffer(resource);
+ struct virgl_transfer *trans;
+ void *ptr;
+ bool readback;
+ uint32_t offset;
+ bool doflushwait = false;
+
+ if ((usage & PIPE_TRANSFER_READ) && (vbuf->on_list == TRUE))
+ doflushwait = true;
+ else
+ doflushwait = virgl_res_needs_flush_wait(vctx, &vbuf->base, usage);
+
+ if (doflushwait)
+ ctx->flush(ctx, NULL, 0);
+
+ trans = util_slab_alloc(&vctx->texture_transfer_pool);
+ if (trans == NULL)
+ return NULL;
+
+ trans->base.resource = resource;
+ trans->base.level = level;
+ trans->base.usage = usage;
+ trans->base.box = *box;
+ trans->base.stride = 0;
+ trans->base.layer_stride = 0;
+
+ offset = box->x;
+
+ readback = virgl_res_needs_readback(vctx, &vbuf->base, usage);
+ if (readback)
+ vs->vws->transfer_get(vs->vws, vbuf->base.hw_res, box, trans->base.stride, trans->base.layer_stride, offset, level);
+
+ if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED))
+ doflushwait = true;
+
+ if (doflushwait || readback)
+ vs->vws->resource_wait(vs->vws, vbuf->base.hw_res);
+
+ ptr = vs->vws->resource_map(vs->vws, vbuf->base.hw_res);
+ if (!ptr) {
+ return NULL;
+ }
+
+ trans->offset = offset;
+ *transfer = &trans->base;
+
+ return ptr + trans->offset;
+}
+
+static void virgl_buffer_transfer_unmap(struct pipe_context *ctx,
+ struct pipe_transfer *transfer)
+{
+ struct virgl_context *vctx = (struct virgl_context *)ctx;
+ struct virgl_transfer *trans = (struct virgl_transfer *)transfer;
+ struct virgl_buffer *vbuf = virgl_buffer(transfer->resource);
+
+ if (trans->base.usage & PIPE_TRANSFER_WRITE) {
+ if (!(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) {
+ struct virgl_screen *vs = virgl_screen(ctx->screen);
+ vbuf->base.clean = FALSE;
+ vctx->num_transfers++;
+ vs->vws->transfer_put(vs->vws, vbuf->base.hw_res,
+ &transfer->box, trans->base.stride, trans->base.layer_stride, trans->offset, transfer->level);
+
+ }
+ }
+
+ util_slab_free(&vctx->texture_transfer_pool, trans);
+}
+
+static void virgl_buffer_transfer_flush_region(struct pipe_context *ctx,
+ struct pipe_transfer *transfer,
+ const struct pipe_box *box)
+{
+ struct virgl_context *vctx = (struct virgl_context *)ctx;
+ struct virgl_buffer *vbuf = virgl_buffer(transfer->resource);
+
+ if (!vbuf->on_list) {
+ struct pipe_resource *res = NULL;
+
+ list_addtail(&vbuf->flush_list, &vctx->to_flush_bufs);
+ vbuf->on_list = TRUE;
+ pipe_resource_reference(&res, &vbuf->base.u.b);
+ }
+
+ util_range_add(&vbuf->valid_buffer_range, transfer->box.x + box->x,
+ transfer->box.x + box->x + box->width);
+
+ vbuf->base.clean = FALSE;
+}
+
+static const struct u_resource_vtbl virgl_buffer_vtbl =
+{
+ u_default_resource_get_handle, /* get_handle */
+ virgl_buffer_destroy, /* resource_destroy */
+ virgl_buffer_transfer_map, /* transfer_map */
+ virgl_buffer_transfer_flush_region, /* transfer_flush_region */
+ virgl_buffer_transfer_unmap, /* transfer_unmap */
+ virgl_transfer_inline_write /* transfer_inline_write */
+};
+
+struct pipe_resource *virgl_buffer_create(struct virgl_screen *vs,
+ const struct pipe_resource *template)
+{
+ struct virgl_buffer *buf;
+ uint32_t size;
+ uint32_t vbind;
+ buf = CALLOC_STRUCT(virgl_buffer);
+ buf->base.clean = TRUE;
+ buf->base.u.b = *template;
+ buf->base.u.b.screen = &vs->base;
+ buf->base.u.vtbl = &virgl_buffer_vtbl;
+ pipe_reference_init(&buf->base.u.b.reference, 1);
+ util_range_init(&buf->valid_buffer_range);
+
+ vbind = pipe_to_virgl_bind(template->bind);
+ size = template->width0;
+
+ buf->base.hw_res = vs->vws->resource_create(vs->vws, template->target, template->format, vbind, template->width0, 1, 1, 1, 0, 0, size);
+
+ util_range_set_empty(&buf->valid_buffer_range);
+ return &buf->base.u.b;
+}