276 lines
8.3 KiB
C
276 lines
8.3 KiB
C
/**********************************************************
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* Copyright 2009-2015 VMware, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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**********************************************************/
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#include "svga_cmd.h"
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#include "util/u_debug.h"
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#include "util/u_memory.h"
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#include "pipe/p_defines.h"
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#include "vmw_surface.h"
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#include "vmw_screen.h"
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#include "vmw_buffer.h"
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#include "vmw_context.h"
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#include "pipebuffer/pb_bufmgr.h"
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void
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vmw_svga_winsys_surface_init(struct svga_winsys_screen *sws,
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struct svga_winsys_surface *srf,
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unsigned surf_size, SVGA3dSurfaceAllFlags flags)
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{
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struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf);
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void *data = NULL;
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struct pb_buffer *pb_buf;
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uint32_t pb_flags;
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struct vmw_winsys_screen *vws = vsrf->screen;
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pb_flags = PIPE_MAP_WRITE | PIPE_MAP_DISCARD_WHOLE_RESOURCE;
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struct pb_manager *provider;
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struct pb_desc desc;
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mtx_lock(&vsrf->mutex);
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data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf, pb_flags);
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if (data)
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goto out_mapped;
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provider = vws->pools.mob_fenced;
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memset(&desc, 0, sizeof(desc));
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desc.alignment = 4096;
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pb_buf = provider->create_buffer(provider, vsrf->size, &desc);
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if (pb_buf != NULL) {
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struct svga_winsys_buffer *vbuf =
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vmw_svga_winsys_buffer_wrap(pb_buf);
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data = vmw_svga_winsys_buffer_map(&vws->base, vbuf, pb_flags);
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if (data) {
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vsrf->rebind = TRUE;
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if (vsrf->buf)
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vmw_svga_winsys_buffer_destroy(&vws->base, vsrf->buf);
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vsrf->buf = vbuf;
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goto out_mapped;
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} else {
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vmw_svga_winsys_buffer_destroy(&vws->base, vbuf);
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goto out_unlock;
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}
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}
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else {
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/* Cannot create a buffer, just unlock */
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goto out_unlock;
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}
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out_mapped:
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mtx_unlock(&vsrf->mutex);
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if (data) {
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if (flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT) {
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memset(data, 0, surf_size + sizeof(SVGA3dDXSOState));
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}
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else {
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memset(data, 0, surf_size);
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}
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}
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mtx_lock(&vsrf->mutex);
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vmw_svga_winsys_buffer_unmap(&vsrf->screen->base, vsrf->buf);
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out_unlock:
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mtx_unlock(&vsrf->mutex);
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}
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void *
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vmw_svga_winsys_surface_map(struct svga_winsys_context *swc,
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struct svga_winsys_surface *srf,
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unsigned flags, boolean *retry,
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boolean *rebind)
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{
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struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf);
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void *data = NULL;
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struct pb_buffer *pb_buf;
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uint32_t pb_flags;
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struct vmw_winsys_screen *vws = vsrf->screen;
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*retry = FALSE;
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*rebind = FALSE;
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assert((flags & (PIPE_MAP_READ | PIPE_MAP_WRITE)) != 0);
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mtx_lock(&vsrf->mutex);
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if (vsrf->mapcount) {
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/* Other mappers will get confused if we discard. */
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flags &= ~PIPE_MAP_DISCARD_WHOLE_RESOURCE;
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}
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vsrf->rebind = FALSE;
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/*
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* If we intend to read, there's no point discarding the
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* data if busy.
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*/
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if (flags & PIPE_MAP_READ || vsrf->shared)
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flags &= ~PIPE_MAP_DISCARD_WHOLE_RESOURCE;
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/*
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* Discard is a hint to a synchronized map.
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*/
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if (flags & PIPE_MAP_DISCARD_WHOLE_RESOURCE)
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flags &= ~PIPE_MAP_UNSYNCHRONIZED;
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/*
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* The surface is allowed to be referenced on the command stream iff
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* we're mapping unsynchronized or discard. This is an early check.
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* We need to recheck after a failing discard map.
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*/
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if (!(flags & (PIPE_MAP_DISCARD_WHOLE_RESOURCE |
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PIPE_MAP_UNSYNCHRONIZED)) &&
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p_atomic_read(&vsrf->validated)) {
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*retry = TRUE;
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goto out_unlock;
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}
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pb_flags = flags & (PIPE_MAP_READ_WRITE | PIPE_MAP_UNSYNCHRONIZED |
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PIPE_MAP_PERSISTENT);
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if (flags & PIPE_MAP_DISCARD_WHOLE_RESOURCE) {
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struct pb_manager *provider;
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struct pb_desc desc;
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/*
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* First, if possible, try to map existing storage with DONTBLOCK.
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*/
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if (!p_atomic_read(&vsrf->validated)) {
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data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf,
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PIPE_MAP_DONTBLOCK | pb_flags);
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if (data)
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goto out_mapped;
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}
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/*
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* Attempt to get a new buffer.
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*/
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provider = vws->pools.mob_fenced;
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memset(&desc, 0, sizeof(desc));
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desc.alignment = 4096;
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pb_buf = provider->create_buffer(provider, vsrf->size, &desc);
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if (pb_buf != NULL) {
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struct svga_winsys_buffer *vbuf =
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vmw_svga_winsys_buffer_wrap(pb_buf);
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data = vmw_svga_winsys_buffer_map(&vws->base, vbuf, pb_flags);
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if (data) {
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vsrf->rebind = TRUE;
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/*
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* We've discarded data on this surface and thus
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* it's data is no longer consider referenced.
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*/
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vmw_swc_surface_clear_reference(swc, vsrf);
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if (vsrf->buf)
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vmw_svga_winsys_buffer_destroy(&vws->base, vsrf->buf);
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vsrf->buf = vbuf;
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/* Rebind persistent maps immediately */
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if (flags & PIPE_MAP_PERSISTENT) {
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*rebind = TRUE;
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vsrf->rebind = FALSE;
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}
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goto out_mapped;
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} else
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vmw_svga_winsys_buffer_destroy(&vws->base, vbuf);
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}
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/*
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* We couldn't get and map a new buffer for some reason.
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* Fall through to an ordinary map.
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* But tell pipe driver to flush now if already on validate list,
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* Otherwise we'll overwrite previous contents.
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*/
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if (!(flags & PIPE_MAP_UNSYNCHRONIZED) &&
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p_atomic_read(&vsrf->validated)) {
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*retry = TRUE;
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goto out_unlock;
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}
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}
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pb_flags |= (flags & PIPE_MAP_DONTBLOCK);
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data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf, pb_flags);
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if (data == NULL)
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goto out_unlock;
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out_mapped:
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++vsrf->mapcount;
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vsrf->data = data;
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vsrf->map_mode = flags & (PIPE_MAP_READ | PIPE_MAP_WRITE);
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out_unlock:
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mtx_unlock(&vsrf->mutex);
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return data;
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}
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void
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vmw_svga_winsys_surface_unmap(struct svga_winsys_context *swc,
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struct svga_winsys_surface *srf,
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boolean *rebind)
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{
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struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf);
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mtx_lock(&vsrf->mutex);
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if (--vsrf->mapcount == 0) {
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*rebind = vsrf->rebind;
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vsrf->rebind = FALSE;
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} else {
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*rebind = FALSE;
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}
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vmw_svga_winsys_buffer_unmap(&vsrf->screen->base, vsrf->buf);
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mtx_unlock(&vsrf->mutex);
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}
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void
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vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst,
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struct vmw_svga_winsys_surface *src)
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{
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struct pipe_reference *src_ref;
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struct pipe_reference *dst_ref;
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struct vmw_svga_winsys_surface *dst;
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if(pdst == NULL || *pdst == src)
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return;
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dst = *pdst;
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src_ref = src ? &src->refcnt : NULL;
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dst_ref = dst ? &dst->refcnt : NULL;
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if (pipe_reference(dst_ref, src_ref)) {
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if (dst->buf)
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vmw_svga_winsys_buffer_destroy(&dst->screen->base, dst->buf);
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vmw_ioctl_surface_destroy(dst->screen, dst->sid);
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#ifdef DEBUG
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/* to detect dangling pointers */
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assert(p_atomic_read(&dst->validated) == 0);
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dst->sid = SVGA3D_INVALID_ID;
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#endif
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mtx_destroy(&dst->mutex);
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FREE(dst);
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}
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*pdst = src;
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}
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