1 /*-
2 *Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 * Rickard E. (Rik) Faith <faith@valinux.com>
27 * Gareth Hughes <gareth@valinux.com>
28 *
29 */
30
31 /** @file drm_memory.c
32 * Wrappers for kernel memory allocation routines, and MTRR management support.
33 *
34 * This file previously implemented a memory consumption tracking system using
35 * the "area" argument for various different types of allocations, but that
36 * has been stripped out for now.
37 */
38
39 #include "drmP.h"
40
41
42 #if defined(__NetBSD__)
43 # ifdef DRM_NO_AGP
44 # define NAGP_I810 0
45 # else
46 # if defined(_KERNEL_OPT)
47 # include "agp_i810.h"
48 # include "genfb.h"
49 # else
50 # define NAGP_I810 1
51 # define NGENFB 0
52 # endif
53 # endif
54 # if NAGP_I810 > 0
55 # include <dev/pci/agpvar.h>
56 # endif
57 # if NGENFB > 0
58 # include <dev/wsfb/genfbvar.h>
59 # endif
60 # if defined(_KERNEL_OPT)
61 # include "opt_mtrr.h"
62 # endif
63 #endif
64
65 MALLOC_DEFINE(DRM_MEM_DMA, "drm_dma", "DRM DMA Data Structures");
66 MALLOC_DEFINE(DRM_MEM_SAREA, "drm_sarea", "DRM SAREA Data Structures");
67 MALLOC_DEFINE(DRM_MEM_DRIVER, "drm_driver", "DRM DRIVER Data Structures");
68 MALLOC_DEFINE(DRM_MEM_MAGIC, "drm_magic", "DRM MAGIC Data Structures");
69 MALLOC_DEFINE(DRM_MEM_IOCTLS, "drm_ioctls", "DRM IOCTL Data Structures");
70 MALLOC_DEFINE(DRM_MEM_MAPS, "drm_maps", "DRM MAP Data Structures");
71 MALLOC_DEFINE(DRM_MEM_BUFS, "drm_bufs", "DRM BUFFER Data Structures");
72 MALLOC_DEFINE(DRM_MEM_SEGS, "drm_segs", "DRM SEGMENTS Data Structures");
73 MALLOC_DEFINE(DRM_MEM_PAGES, "drm_pages", "DRM PAGES Data Structures");
74 MALLOC_DEFINE(DRM_MEM_FILES, "drm_files", "DRM FILE Data Structures");
75 MALLOC_DEFINE(DRM_MEM_QUEUES, "drm_queues", "DRM QUEUE Data Structures");
76 MALLOC_DEFINE(DRM_MEM_CMDS, "drm_cmds", "DRM COMMAND Data Structures");
77 MALLOC_DEFINE(DRM_MEM_MAPPINGS, "drm_mapping", "DRM MAPPING Data Structures");
78 MALLOC_DEFINE(DRM_MEM_BUFLISTS, "drm_buflists", "DRM BUFLISTS Data Structures");
79 MALLOC_DEFINE(DRM_MEM_AGPLISTS, "drm_agplists", "DRM AGPLISTS Data Structures");
80 MALLOC_DEFINE(DRM_MEM_CTXBITMAP, "drm_ctxbitmap",
81 "DRM CTXBITMAP Data Structures");
82 MALLOC_DEFINE(DRM_MEM_SGLISTS, "drm_sglists", "DRM SGLISTS Data Structures");
83 MALLOC_DEFINE(DRM_MEM_DRAWABLE, "drm_drawable", "DRM DRAWABLE Data Structures");
84 MALLOC_DEFINE(DRM_MEM_MM, "drm_mm", "DRM MM Data Structures");
85
drm_mem_init(void)86 void drm_mem_init(void)
87 {
88 }
89
drm_mem_uninit(void)90 void drm_mem_uninit(void)
91 {
92 }
93
94 #if defined(__NetBSD__)
95 static void *
drm_netbsd_ioremap(struct drm_device * dev,drm_local_map_t * map,int wc)96 drm_netbsd_ioremap(struct drm_device *dev, drm_local_map_t *map, int wc)
97 {
98 bus_space_handle_t h;
99 int i, reason;
100 for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) {
101
102 /* Does the requested mapping lie within this resource? */
103 if ((dev->pci_map_data[i].maptype == PCI_MAPREG_TYPE_MEM ||
104 dev->pci_map_data[i].maptype ==
105 (PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT)) &&
106 map->offset >= dev->pci_map_data[i].base &&
107 map->offset + map->size <= dev->pci_map_data[i].base +
108 dev->pci_map_data[i].size)
109 {
110 map->bst = dev->pa.pa_memt;
111 map->fullmap = &(dev->pci_map_data[i]);
112 map->mapsize = map->size;
113 dev->pci_map_data[i].mapped++;
114
115 /* If we've already mapped this resource in, handle
116 * submapping if needed, give caller a bus_space handle
117 * and pointer for the offest they asked for */
118 if (dev->pci_map_data[i].mapped > 1)
119 {
120 if ((reason = bus_space_subregion(
121 dev->pa.pa_memt,
122 dev->pci_map_data[i].bsh,
123 map->offset - dev->pci_map_data[i].base,
124 map->size, &h)) != 0) {
125 DRM_DEBUG("ioremap failed to "
126 "bus_space_subregion: %d\n",
127 reason);
128 return NULL;
129 }
130 map->bsh = h;
131 map->handle = bus_space_vaddr(dev->pa.pa_memt,
132 h);
133 return map->handle;
134 }
135
136 /* Map in entirety of resource - full size and handle
137 * go in pci_map_data, specific mapping in callers
138 * drm_local_map_t */
139 DRM_DEBUG("ioremap%s: flags %d\n", wc ? "_wc" : "",
140 dev->pci_map_data[i].flags);
141 if ((reason = bus_space_map(map->bst,
142 dev->pci_map_data[i].base,
143 dev->pci_map_data[i].size,
144 dev->pci_map_data[i].flags,
145 &dev->pci_map_data[i].bsh)))
146 {
147 dev->pci_map_data[i].mapped--;
148 #if NAGP_I810 > 0 /* XXX horrible kludge: agp might have mapped it */
149 if (agp_i810_borrow(map->offset, map->size,
150 &map->bsh))
151 return bus_space_vaddr(map->bst, map->bsh);
152 #endif
153 #if NGENFB > 0
154 if (genfb_borrow(map->offset, &map->bsh))
155 return bus_space_vaddr(map->bst, map->bsh);
156 #endif
157 DRM_DEBUG("ioremap: failed to map (%d)\n",
158 reason);
159 return NULL;
160 }
161
162 dev->pci_map_data[i].vaddr = bus_space_vaddr(map->bst,
163 dev->pci_map_data[i].bsh);
164
165 /* Caller might have requested a submapping of that */
166 if ((reason = bus_space_subregion(
167 dev->pa.pa_memt,
168 dev->pci_map_data[i].bsh,
169 map->offset - dev->pci_map_data[i].base,
170 map->size, &h)) != 0) {
171 DRM_DEBUG("ioremap failed to "
172 "bus_space_subregion: %d\n",
173 reason);
174 return NULL;
175 }
176
177 DRM_DEBUG("ioremap mem found for %lx, %lx: %p\n",
178 map->offset, map->size,
179 dev->agp_map_data[i].vaddr);
180
181 map->bsh = h;
182 map->handle = bus_space_vaddr(dev->pa.pa_memt, h);
183 return map->handle;
184 }
185 }
186 /* failed to find a valid mapping; all hope isn't lost though */
187 for(i = 0; i<DRM_MAX_PCI_RESOURCE; i++) {
188 if (dev->agp_map_data[i].mapped > 0 &&
189 dev->agp_map_data[i].base == map->offset &&
190 dev->agp_map_data[i].size >= map->size) {
191 map->bst = dev->pa.pa_memt;
192 map->fullmap = &(dev->agp_map_data[i]);
193 map->mapsize = dev->agp_map_data[i].size;
194 dev->agp_map_data[i].mapped++;
195 map->bsh = dev->agp_map_data[i].bsh;
196 return dev->agp_map_data[i].vaddr;
197 }
198 if (dev->agp_map_data[i].mapped == 0) {
199 int rv;
200
201 map->bst = dev->pa.pa_memt;
202 dev->agp_map_data[i].mapped++;
203 dev->agp_map_data[i].base = map->offset;
204 dev->agp_map_data[i].size = map->size;
205 dev->agp_map_data[i].flags = BUS_SPACE_MAP_LINEAR |
206 BUS_SPACE_MAP_PREFETCHABLE;
207 dev->agp_map_data[i].maptype = PCI_MAPREG_TYPE_MEM;
208 map->fullmap = &(dev->agp_map_data[i]);
209 map->mapsize = dev->agp_map_data[i].size;
210
211 DRM_DEBUG("ioremap%s: flags %d\n", wc ? "_wc" : "",
212 dev->agp_map_data[i].flags);
213 rv = bus_space_map(map->bst, map->offset,
214 dev->agp_map_data[i].size,
215 dev->agp_map_data[i].flags, &map->bsh);
216 if (rv) {
217 dev->agp_map_data[i].mapped--;
218 DRM_DEBUG("ioremap: failed to map (%d)\n", rv);
219 return NULL;
220 }
221 dev->agp_map_data[i].bsh = map->bsh;
222 dev->agp_map_data[i].vaddr =
223 bus_space_vaddr(map->bst, map->bsh);
224 DRM_DEBUG("ioremap agp mem found for %lx, %lx: %p\n",
225 map->offset, map->size,
226 dev->agp_map_data[i].vaddr);
227 return dev->agp_map_data[i].vaddr;
228 }
229 }
230
231 /* now we can give up... */
232 DRM_DEBUG("drm_ioremap failed: offset=%lx size=%lu\n",
233 map->offset, map->size);
234 return NULL;
235 }
236 #endif
237
drm_ioremap_wc(struct drm_device * dev,drm_local_map_t * map)238 void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map)
239 {
240 #if defined(__FreeBSD__)
241 return pmap_mapdev_attr(map->offset, map->size, PAT_WRITE_COMBINING);
242 #elif defined(__NetBSD__)
243 return drm_netbsd_ioremap(dev, map, 1);
244 #endif
245 }
246
drm_ioremap(struct drm_device * dev,drm_local_map_t * map)247 void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map)
248 {
249 #if defined(__FreeBSD__)
250 return pmap_mapdev(map->offset, map->size);
251 #elif defined(__NetBSD__)
252 return drm_netbsd_ioremap(dev, map, 0);
253 #endif
254 }
255
drm_ioremapfree(drm_local_map_t * map)256 void drm_ioremapfree(drm_local_map_t *map)
257 {
258 #if defined(__FreeBSD__)
259 pmap_unmapdev((vm_offset_t) map->handle, map->size);
260 #elif defined(__NetBSD__)
261 if (map->fullmap == NULL) {
262 DRM_INFO("drm_ioremapfree called for unknown map\n");
263 return;
264 }
265
266 if (map->fullmap->mapped > 0) {
267 map->fullmap->mapped--;
268 if(map->fullmap->mapped == 0)
269 bus_space_unmap(map->bst, map->fullmap->bsh,
270 map->fullmap->size);
271 }
272 #endif
273 }
274
275 #if defined(__FreeBSD__)
276 int
drm_mtrr_add(unsigned long offset,size_t size,int flags)277 drm_mtrr_add(unsigned long offset, size_t size, int flags)
278 {
279 int act;
280 struct mem_range_desc mrdesc;
281
282 mrdesc.mr_base = offset;
283 mrdesc.mr_len = size;
284 mrdesc.mr_flags = flags;
285 act = MEMRANGE_SET_UPDATE;
286 strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
287 return mem_range_attr_set(&mrdesc, &act);
288 }
289
290 int
drm_mtrr_del(int __unused handle,unsigned long offset,size_t size,int flags)291 drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags)
292 {
293 int act;
294 struct mem_range_desc mrdesc;
295
296 mrdesc.mr_base = offset;
297 mrdesc.mr_len = size;
298 mrdesc.mr_flags = flags;
299 act = MEMRANGE_SET_REMOVE;
300 strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
301 return mem_range_attr_set(&mrdesc, &act);
302 }
303 #elif defined(__NetBSD__)
304 int
drm_mtrr_add(unsigned long offset,size_t size,int flags)305 drm_mtrr_add(unsigned long offset, size_t size, int flags)
306 {
307 #if defined(MTRR) && defined(MTRR_GETSET_KERNEL)
308 struct mtrr mtrrmap;
309 int one = 1;
310
311 mtrrmap.base = offset;
312 mtrrmap.len = size;
313 mtrrmap.type = flags;
314 mtrrmap.flags = MTRR_VALID;
315 return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
316 #else
317 return 0;
318 #endif
319 }
320
321 int
drm_mtrr_del(int __unused handle,unsigned long offset,size_t size,int flags)322 drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags)
323 {
324 #if defined(MTRR) && defined(MTRR_GETSET_KERNEL)
325 struct mtrr mtrrmap;
326 int one = 1;
327
328 mtrrmap.base = offset;
329 mtrrmap.len = size;
330 mtrrmap.type = flags;
331 mtrrmap.flags = 0;
332 return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
333 #else
334 return 0;
335 #endif
336 }
337 #endif
338