diff options
Diffstat (limited to 'lib/mesa/src/gallium/winsys/svga/drm/vmw_surface.c')
| -rw-r--r-- | lib/mesa/src/gallium/winsys/svga/drm/vmw_surface.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/lib/mesa/src/gallium/winsys/svga/drm/vmw_surface.c b/lib/mesa/src/gallium/winsys/svga/drm/vmw_surface.c new file mode 100644 index 000000000..cf648b4dd --- /dev/null +++ b/lib/mesa/src/gallium/winsys/svga/drm/vmw_surface.c @@ -0,0 +1,207 @@ +/********************************************************** + * Copyright 2009 VMware, 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 the rights to use, copy, + * modify, merge, publish, distribute, sublicense, 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 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 + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * 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 "svga_cmd.h" +#include "util/u_debug.h" +#include "util/u_memory.h" +#include "pipe/p_defines.h" +#include "vmw_surface.h" +#include "vmw_screen.h" +#include "vmw_buffer.h" +#include "vmw_context.h" +#include "pipebuffer/pb_bufmgr.h" + + +void * +vmw_svga_winsys_surface_map(struct svga_winsys_context *swc, + struct svga_winsys_surface *srf, + unsigned flags, boolean *retry) +{ + struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf); + void *data = NULL; + struct pb_buffer *pb_buf; + uint32_t pb_flags; + struct vmw_winsys_screen *vws = vsrf->screen; + + *retry = FALSE; + assert((flags & (PIPE_TRANSFER_READ | PIPE_TRANSFER_WRITE)) != 0); + pipe_mutex_lock(vsrf->mutex); + + if (vsrf->mapcount) { + /* + * Only allow multiple readers to map. + */ + if ((flags & PIPE_TRANSFER_WRITE) || + (vsrf->map_mode & PIPE_TRANSFER_WRITE)) + goto out_unlock; + + data = vsrf->data; + goto out_mapped; + } + + vsrf->rebind = FALSE; + + /* + * If we intend to read, there's no point discarding the + * data if busy. + */ + if (flags & PIPE_TRANSFER_READ || vsrf->shared) + flags &= ~PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE; + + /* + * Discard is a hint to a synchronized map. + */ + if (flags & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) + flags &= ~PIPE_TRANSFER_UNSYNCHRONIZED; + + /* + * The surface is allowed to be referenced on the command stream iff + * we're mapping unsynchronized or discard. This is an early check. + * We need to recheck after a failing discard map. + */ + if (!(flags & (PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE | + PIPE_TRANSFER_UNSYNCHRONIZED)) && + p_atomic_read(&vsrf->validated)) { + *retry = TRUE; + goto out_unlock; + } + + pb_flags = flags & (PIPE_TRANSFER_READ_WRITE | PIPE_TRANSFER_UNSYNCHRONIZED); + + if (flags & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) { + struct pb_manager *provider; + struct pb_desc desc; + + /* + * First, if possible, try to map existing storage with DONTBLOCK. + */ + if (!p_atomic_read(&vsrf->validated)) { + data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf, + PIPE_TRANSFER_DONTBLOCK | pb_flags); + if (data) + goto out_mapped; + } + + /* + * Attempt to get a new buffer. + */ + provider = vws->pools.mob_fenced; + memset(&desc, 0, sizeof(desc)); + desc.alignment = 4096; + pb_buf = provider->create_buffer(provider, vsrf->size, &desc); + if (pb_buf != NULL) { + struct svga_winsys_buffer *vbuf = + vmw_svga_winsys_buffer_wrap(pb_buf); + + data = vmw_svga_winsys_buffer_map(&vws->base, vbuf, pb_flags); + if (data) { + vsrf->rebind = TRUE; + /* + * We've discarded data on this surface and thus + * it's data is no longer consider referenced. + */ + vmw_swc_surface_clear_reference(swc, vsrf); + if (vsrf->buf) + vmw_svga_winsys_buffer_destroy(&vws->base, vsrf->buf); + vsrf->buf = vbuf; + goto out_mapped; + } else + vmw_svga_winsys_buffer_destroy(&vws->base, vbuf); + } + /* + * We couldn't get and map a new buffer for some reason. + * Fall through to an ordinary map. + * But tell pipe driver to flush now if already on validate list, + * Otherwise we'll overwrite previous contents. + */ + if (!(flags & PIPE_TRANSFER_UNSYNCHRONIZED) && + p_atomic_read(&vsrf->validated)) { + *retry = TRUE; + goto out_unlock; + } + } + + pb_flags |= (flags & PIPE_TRANSFER_DONTBLOCK); + data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf, pb_flags); + if (data == NULL) + goto out_unlock; + +out_mapped: + ++vsrf->mapcount; + vsrf->data = data; + vsrf->map_mode = flags & (PIPE_TRANSFER_READ | PIPE_TRANSFER_WRITE); +out_unlock: + pipe_mutex_unlock(vsrf->mutex); + return data; +} + + +void +vmw_svga_winsys_surface_unmap(struct svga_winsys_context *swc, + struct svga_winsys_surface *srf, + boolean *rebind) +{ + struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf); + pipe_mutex_lock(vsrf->mutex); + if (--vsrf->mapcount == 0) { + *rebind = vsrf->rebind; + vsrf->rebind = FALSE; + vmw_svga_winsys_buffer_unmap(&vsrf->screen->base, vsrf->buf); + } + pipe_mutex_unlock(vsrf->mutex); +} + +void +vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst, + struct vmw_svga_winsys_surface *src) +{ + struct pipe_reference *src_ref; + struct pipe_reference *dst_ref; + struct vmw_svga_winsys_surface *dst; + + if(pdst == NULL || *pdst == src) + return; + + dst = *pdst; + + src_ref = src ? &src->refcnt : NULL; + dst_ref = dst ? &dst->refcnt : NULL; + + if (pipe_reference(dst_ref, src_ref)) { + if (dst->buf) + vmw_svga_winsys_buffer_destroy(&dst->screen->base, dst->buf); + vmw_ioctl_surface_destroy(dst->screen, dst->sid); +#ifdef DEBUG + /* to detect dangling pointers */ + assert(p_atomic_read(&dst->validated) == 0); + dst->sid = SVGA3D_INVALID_ID; +#endif + pipe_mutex_destroy(dst->mutex); + FREE(dst); + } + + *pdst = src; +} |