Jakob Bornecrantz | 3192633 | 2009-11-16 19:56:18 +0100 | [diff] [blame] | 1 | /********************************************************** |
| 2 | * Copyright 2009 VMware, Inc. All rights reserved. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person |
| 5 | * obtaining a copy of this software and associated documentation |
| 6 | * files (the "Software"), to deal in the Software without |
| 7 | * restriction, including without limitation the rights to use, copy, |
| 8 | * modify, merge, publish, distribute, sublicense, and/or sell copies |
| 9 | * of the Software, and to permit persons to whom the Software is |
| 10 | * furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 19 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 20 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | * |
| 24 | **********************************************************/ |
| 25 | |
| 26 | /** |
| 27 | * @file |
| 28 | * SVGA buffer manager for Guest Memory Regions (GMRs). |
| 29 | * |
| 30 | * GMRs are used for pixel and vertex data upload/download to/from the virtual |
| 31 | * SVGA hardware. There is a limited number of GMRs available, and |
| 32 | * creating/destroying them is also a slow operation so we must suballocate |
| 33 | * them. |
| 34 | * |
| 35 | * This file implements a pipebuffer library's buffer manager, so that we can |
| 36 | * use pipepbuffer's suballocation, fencing, and debugging facilities with GMRs. |
| 37 | * |
| 38 | * @author Jose Fonseca <jfonseca@vmware.com> |
| 39 | */ |
| 40 | |
| 41 | |
| 42 | #include "svga_cmd.h" |
| 43 | |
| 44 | #include "pipe/p_inlines.h" |
| 45 | #include "util/u_memory.h" |
| 46 | #include "pipebuffer/pb_buffer.h" |
| 47 | #include "pipebuffer/pb_bufmgr.h" |
| 48 | |
| 49 | #include "svga_winsys.h" |
| 50 | |
| 51 | #include "vmw_screen.h" |
| 52 | #include "vmw_buffer.h" |
| 53 | |
| 54 | |
| 55 | struct vmw_gmr_bufmgr; |
| 56 | |
| 57 | |
| 58 | struct vmw_gmr_buffer |
| 59 | { |
| 60 | struct pb_buffer base; |
| 61 | |
| 62 | struct vmw_gmr_bufmgr *mgr; |
| 63 | |
| 64 | struct vmw_region *region; |
| 65 | void *map; |
| 66 | |
| 67 | #ifdef DEBUG |
| 68 | struct pipe_fence_handle *last_fence; |
| 69 | #endif |
| 70 | }; |
| 71 | |
| 72 | |
| 73 | extern const struct pb_vtbl vmw_gmr_buffer_vtbl; |
| 74 | |
| 75 | |
| 76 | static INLINE struct vmw_gmr_buffer * |
| 77 | vmw_gmr_buffer(struct pb_buffer *buf) |
| 78 | { |
| 79 | assert(buf); |
| 80 | assert(buf->vtbl == &vmw_gmr_buffer_vtbl); |
| 81 | return (struct vmw_gmr_buffer *)buf; |
| 82 | } |
| 83 | |
| 84 | |
| 85 | struct vmw_gmr_bufmgr |
| 86 | { |
| 87 | struct pb_manager base; |
| 88 | |
| 89 | struct vmw_winsys_screen *vws; |
| 90 | }; |
| 91 | |
| 92 | |
| 93 | static INLINE struct vmw_gmr_bufmgr * |
| 94 | vmw_gmr_bufmgr(struct pb_manager *mgr) |
| 95 | { |
| 96 | assert(mgr); |
| 97 | return (struct vmw_gmr_bufmgr *)mgr; |
| 98 | } |
| 99 | |
| 100 | |
| 101 | static void |
| 102 | vmw_gmr_buffer_destroy(struct pb_buffer *_buf) |
| 103 | { |
| 104 | struct vmw_gmr_buffer *buf = vmw_gmr_buffer(_buf); |
| 105 | |
| 106 | #ifdef DEBUG |
| 107 | if(buf->last_fence) { |
| 108 | struct svga_winsys_screen *sws = &buf->mgr->vws->base; |
| 109 | assert(sws->fence_signalled(sws, buf->last_fence, 0) == 0); |
| 110 | } |
| 111 | #endif |
| 112 | |
| 113 | vmw_ioctl_region_unmap(buf->region); |
| 114 | |
| 115 | vmw_ioctl_region_destroy(buf->region); |
| 116 | |
| 117 | FREE(buf); |
| 118 | } |
| 119 | |
| 120 | |
| 121 | static void * |
| 122 | vmw_gmr_buffer_map(struct pb_buffer *_buf, |
| 123 | unsigned flags) |
| 124 | { |
| 125 | struct vmw_gmr_buffer *buf = vmw_gmr_buffer(_buf); |
| 126 | return buf->map; |
| 127 | } |
| 128 | |
| 129 | |
| 130 | static void |
| 131 | vmw_gmr_buffer_unmap(struct pb_buffer *_buf) |
| 132 | { |
| 133 | /* Do nothing */ |
| 134 | (void)_buf; |
| 135 | } |
| 136 | |
| 137 | |
| 138 | static void |
| 139 | vmw_gmr_buffer_get_base_buffer(struct pb_buffer *buf, |
| 140 | struct pb_buffer **base_buf, |
| 141 | unsigned *offset) |
| 142 | { |
| 143 | *base_buf = buf; |
| 144 | *offset = 0; |
| 145 | } |
| 146 | |
| 147 | |
| 148 | static enum pipe_error |
| 149 | vmw_gmr_buffer_validate( struct pb_buffer *_buf, |
| 150 | struct pb_validate *vl, |
| 151 | unsigned flags ) |
| 152 | { |
| 153 | /* Always pinned */ |
| 154 | return PIPE_OK; |
| 155 | } |
| 156 | |
| 157 | |
| 158 | static void |
| 159 | vmw_gmr_buffer_fence( struct pb_buffer *_buf, |
| 160 | struct pipe_fence_handle *fence ) |
| 161 | { |
| 162 | /* We don't need to do anything, as the pipebuffer library |
| 163 | * will take care of delaying the destruction of fenced buffers */ |
| 164 | #ifdef DEBUG |
| 165 | struct vmw_gmr_buffer *buf = vmw_gmr_buffer(_buf); |
| 166 | if(fence) |
| 167 | buf->last_fence = fence; |
| 168 | #endif |
| 169 | } |
| 170 | |
| 171 | |
| 172 | const struct pb_vtbl vmw_gmr_buffer_vtbl = { |
| 173 | vmw_gmr_buffer_destroy, |
| 174 | vmw_gmr_buffer_map, |
| 175 | vmw_gmr_buffer_unmap, |
| 176 | vmw_gmr_buffer_validate, |
| 177 | vmw_gmr_buffer_fence, |
| 178 | vmw_gmr_buffer_get_base_buffer |
| 179 | }; |
| 180 | |
| 181 | |
| 182 | static struct pb_buffer * |
| 183 | vmw_gmr_bufmgr_create_buffer(struct pb_manager *_mgr, |
| 184 | pb_size size, |
| 185 | const struct pb_desc *desc) |
| 186 | { |
| 187 | struct vmw_gmr_bufmgr *mgr = vmw_gmr_bufmgr(_mgr); |
| 188 | struct vmw_winsys_screen *vws = mgr->vws; |
| 189 | struct vmw_gmr_buffer *buf; |
| 190 | |
| 191 | buf = CALLOC_STRUCT(vmw_gmr_buffer); |
| 192 | if(!buf) |
| 193 | goto error1; |
| 194 | |
| 195 | pipe_reference_init(&buf->base.base.reference, 1); |
| 196 | buf->base.base.alignment = desc->alignment; |
| 197 | buf->base.base.usage = desc->usage; |
| 198 | buf->base.base.size = size; |
| 199 | buf->base.vtbl = &vmw_gmr_buffer_vtbl; |
| 200 | buf->mgr = mgr; |
| 201 | |
| 202 | buf->region = vmw_ioctl_region_create(vws, size); |
| 203 | if(!buf->region) |
| 204 | goto error2; |
| 205 | |
| 206 | buf->map = vmw_ioctl_region_map(buf->region); |
| 207 | if(!buf->map) |
| 208 | goto error3; |
| 209 | |
| 210 | return &buf->base; |
| 211 | |
| 212 | error3: |
| 213 | vmw_ioctl_region_destroy(buf->region); |
| 214 | error2: |
| 215 | FREE(buf); |
| 216 | error1: |
| 217 | return NULL; |
| 218 | } |
| 219 | |
| 220 | |
| 221 | static void |
| 222 | vmw_gmr_bufmgr_flush(struct pb_manager *mgr) |
| 223 | { |
| 224 | /* No-op */ |
| 225 | } |
| 226 | |
| 227 | |
| 228 | static void |
| 229 | vmw_gmr_bufmgr_destroy(struct pb_manager *_mgr) |
| 230 | { |
| 231 | struct vmw_gmr_bufmgr *mgr = vmw_gmr_bufmgr(_mgr); |
| 232 | FREE(mgr); |
| 233 | } |
| 234 | |
| 235 | |
| 236 | struct pb_manager * |
| 237 | vmw_gmr_bufmgr_create(struct vmw_winsys_screen *vws) |
| 238 | { |
| 239 | struct vmw_gmr_bufmgr *mgr; |
| 240 | |
| 241 | mgr = CALLOC_STRUCT(vmw_gmr_bufmgr); |
| 242 | if(!mgr) |
| 243 | return NULL; |
| 244 | |
| 245 | mgr->base.destroy = vmw_gmr_bufmgr_destroy; |
| 246 | mgr->base.create_buffer = vmw_gmr_bufmgr_create_buffer; |
| 247 | mgr->base.flush = vmw_gmr_bufmgr_flush; |
| 248 | |
| 249 | mgr->vws = vws; |
| 250 | |
| 251 | return &mgr->base; |
| 252 | } |
| 253 | |
| 254 | |
| 255 | boolean |
| 256 | vmw_gmr_bufmgr_region_ptr(struct pb_buffer *buf, |
| 257 | struct SVGAGuestPtr *ptr) |
| 258 | { |
| 259 | struct pb_buffer *base_buf; |
| 260 | unsigned offset = 0; |
| 261 | struct vmw_gmr_buffer *gmr_buf; |
| 262 | |
| 263 | pb_get_base_buffer( buf, &base_buf, &offset ); |
| 264 | |
| 265 | gmr_buf = vmw_gmr_buffer(base_buf); |
| 266 | if(!gmr_buf) |
| 267 | return FALSE; |
| 268 | |
| 269 | *ptr = vmw_ioctl_region_ptr(gmr_buf->region); |
| 270 | |
| 271 | ptr->offset += offset; |
| 272 | |
| 273 | return TRUE; |
| 274 | } |