diff options
author | Jakob Bornecrantz <jakob@vmware.com> | 2009-11-16 19:56:18 +0100 |
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committer | Jakob Bornecrantz <jakob@vmware.com> | 2009-11-17 03:18:04 +0100 |
commit | 3192633d4abe262d413e41feb871fe8deed409d8 (patch) | |
tree | 0ddaaceeef6cce283337c8854a2b55266399f3e2 /src/gallium/winsys/drm/vmware/core/vmw_buffer.c | |
parent | 6b480dc21dd489d48685b2268e495218aea74293 (diff) |
svga: Add svga driver
Diffstat (limited to 'src/gallium/winsys/drm/vmware/core/vmw_buffer.c')
-rw-r--r-- | src/gallium/winsys/drm/vmware/core/vmw_buffer.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/vmware/core/vmw_buffer.c b/src/gallium/winsys/drm/vmware/core/vmw_buffer.c new file mode 100644 index 0000000000..b812fb59d3 --- /dev/null +++ b/src/gallium/winsys/drm/vmware/core/vmw_buffer.c @@ -0,0 +1,274 @@ +/********************************************************** + * 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 "pipe/p_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; +} |