+++ /dev/null
-/**********************************************************
- * 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.
- *
- **********************************************************/
-
-/**
- * @file
- * SVGA buffer manager for Guest Memory Regions (GMRs).
- *
- * GMRs are used for pixel and vertex data upload/download to/from the virtual
- * SVGA hardware. There is a limited number of GMRs available, and
- * creating/destroying them is also a slow operation so we must suballocate
- * them.
- *
- * This file implements a pipebuffer library's buffer manager, so that we can
- * use pipepbuffer's suballocation, fencing, and debugging facilities with GMRs.
- *
- * @author Jose Fonseca <jfonseca@vmware.com>
- */
-
-
-#include "svga_cmd.h"
-
-#include "util/u_inlines.h"
-#include "util/u_memory.h"
-#include "pipebuffer/pb_buffer.h"
-#include "pipebuffer/pb_bufmgr.h"
-
-#include "svga_winsys.h"
-
-#include "vmw_screen.h"
-#include "vmw_buffer.h"
-
-
-struct vmw_gmr_bufmgr;
-
-
-struct vmw_gmr_buffer
-{
- struct pb_buffer base;
-
- struct vmw_gmr_bufmgr *mgr;
-
- struct vmw_region *region;
- void *map;
-
-#ifdef DEBUG
- struct pipe_fence_handle *last_fence;
-#endif
-};
-
-
-extern const struct pb_vtbl vmw_gmr_buffer_vtbl;
-
-
-static INLINE struct vmw_gmr_buffer *
-vmw_gmr_buffer(struct pb_buffer *buf)
-{
- assert(buf);
- assert(buf->vtbl == &vmw_gmr_buffer_vtbl);
- return (struct vmw_gmr_buffer *)buf;
-}
-
-
-struct vmw_gmr_bufmgr
-{
- struct pb_manager base;
-
- struct vmw_winsys_screen *vws;
-};
-
-
-static INLINE struct vmw_gmr_bufmgr *
-vmw_gmr_bufmgr(struct pb_manager *mgr)
-{
- assert(mgr);
- return (struct vmw_gmr_bufmgr *)mgr;
-}
-
-
-static void
-vmw_gmr_buffer_destroy(struct pb_buffer *_buf)
-{
- struct vmw_gmr_buffer *buf = vmw_gmr_buffer(_buf);
-
-#ifdef DEBUG
- if(buf->last_fence) {
- struct svga_winsys_screen *sws = &buf->mgr->vws->base;
- assert(sws->fence_signalled(sws, buf->last_fence, 0) == 0);
- }
-#endif
-
- vmw_ioctl_region_unmap(buf->region);
-
- vmw_ioctl_region_destroy(buf->region);
-
- FREE(buf);
-}
-
-
-static void *
-vmw_gmr_buffer_map(struct pb_buffer *_buf,
- unsigned flags)
-{
- struct vmw_gmr_buffer *buf = vmw_gmr_buffer(_buf);
- return buf->map;
-}
-
-
-static void
-vmw_gmr_buffer_unmap(struct pb_buffer *_buf)
-{
- /* Do nothing */
- (void)_buf;
-}
-
-
-static void
-vmw_gmr_buffer_get_base_buffer(struct pb_buffer *buf,
- struct pb_buffer **base_buf,
- unsigned *offset)
-{
- *base_buf = buf;
- *offset = 0;
-}
-
-
-static enum pipe_error
-vmw_gmr_buffer_validate( struct pb_buffer *_buf,
- struct pb_validate *vl,
- unsigned flags )
-{
- /* Always pinned */
- return PIPE_OK;
-}
-
-
-static void
-vmw_gmr_buffer_fence( struct pb_buffer *_buf,
- struct pipe_fence_handle *fence )
-{
- /* We don't need to do anything, as the pipebuffer library
- * will take care of delaying the destruction of fenced buffers */
-#ifdef DEBUG
- struct vmw_gmr_buffer *buf = vmw_gmr_buffer(_buf);
- if(fence)
- buf->last_fence = fence;
-#endif
-}
-
-
-const struct pb_vtbl vmw_gmr_buffer_vtbl = {
- vmw_gmr_buffer_destroy,
- vmw_gmr_buffer_map,
- vmw_gmr_buffer_unmap,
- vmw_gmr_buffer_validate,
- vmw_gmr_buffer_fence,
- vmw_gmr_buffer_get_base_buffer
-};
-
-
-static struct pb_buffer *
-vmw_gmr_bufmgr_create_buffer(struct pb_manager *_mgr,
- pb_size size,
- const struct pb_desc *desc)
-{
- struct vmw_gmr_bufmgr *mgr = vmw_gmr_bufmgr(_mgr);
- struct vmw_winsys_screen *vws = mgr->vws;
- struct vmw_gmr_buffer *buf;
-
- buf = CALLOC_STRUCT(vmw_gmr_buffer);
- if(!buf)
- goto error1;
-
- pipe_reference_init(&buf->base.base.reference, 1);
- buf->base.base.alignment = desc->alignment;
- buf->base.base.usage = desc->usage;
- buf->base.base.size = size;
- buf->base.vtbl = &vmw_gmr_buffer_vtbl;
- buf->mgr = mgr;
-
- buf->region = vmw_ioctl_region_create(vws, size);
- if(!buf->region)
- goto error2;
-
- buf->map = vmw_ioctl_region_map(buf->region);
- if(!buf->map)
- goto error3;
-
- return &buf->base;
-
-error3:
- vmw_ioctl_region_destroy(buf->region);
-error2:
- FREE(buf);
-error1:
- return NULL;
-}
-
-
-static void
-vmw_gmr_bufmgr_flush(struct pb_manager *mgr)
-{
- /* No-op */
-}
-
-
-static void
-vmw_gmr_bufmgr_destroy(struct pb_manager *_mgr)
-{
- struct vmw_gmr_bufmgr *mgr = vmw_gmr_bufmgr(_mgr);
- FREE(mgr);
-}
-
-
-struct pb_manager *
-vmw_gmr_bufmgr_create(struct vmw_winsys_screen *vws)
-{
- struct vmw_gmr_bufmgr *mgr;
-
- mgr = CALLOC_STRUCT(vmw_gmr_bufmgr);
- if(!mgr)
- return NULL;
-
- mgr->base.destroy = vmw_gmr_bufmgr_destroy;
- mgr->base.create_buffer = vmw_gmr_bufmgr_create_buffer;
- mgr->base.flush = vmw_gmr_bufmgr_flush;
-
- mgr->vws = vws;
-
- return &mgr->base;
-}
-
-
-boolean
-vmw_gmr_bufmgr_region_ptr(struct pb_buffer *buf,
- struct SVGAGuestPtr *ptr)
-{
- struct pb_buffer *base_buf;
- unsigned offset = 0;
- struct vmw_gmr_buffer *gmr_buf;
-
- pb_get_base_buffer( buf, &base_buf, &offset );
-
- gmr_buf = vmw_gmr_buffer(base_buf);
- if(!gmr_buf)
- return FALSE;
-
- *ptr = vmw_ioctl_region_ptr(gmr_buf->region);
-
- ptr->offset += offset;
-
- return TRUE;
-}
projects / mesa.git / blobdiff