1 /* drm_agpsupport.h -- DRM support for AGP/GART backend -*- linux-c -*-
2 * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
28 * Rickard E. (Rik) Faith <faith@valinux.com>
29 * Gareth Hughes <gareth@valinux.com>
34 #include "dev/drm/drmP.h"
40 #include <sys/agpio.h>
44 int DRM(agp_info)(DRM_OS_IOCTL)
46 drm_device_t *dev = kdev->si_drv1;
47 struct agp_info *kern;
50 if (!dev->agp || !dev->agp->acquired) return EINVAL;
52 kern = &dev->agp->info;
53 agp_get_info(dev->agp->agpdev, kern);
54 info.agp_version_major = 1;
55 info.agp_version_minor = 0;
56 info.mode = kern->ai_mode;
57 info.aperture_base = kern->ai_aperture_base;
58 info.aperture_size = kern->ai_aperture_size;
59 info.memory_allowed = kern->ai_memory_allowed;
60 info.memory_used = kern->ai_memory_used;
61 info.id_vendor = kern->ai_devid & 0xffff;
62 info.id_device = kern->ai_devid >> 16;
64 *(drm_agp_info_t *) data = info;
68 int DRM(agp_acquire)(DRM_OS_IOCTL)
70 drm_device_t *dev = kdev->si_drv1;
73 if (!dev->agp || dev->agp->acquired) return EINVAL;
74 retcode = agp_acquire(dev->agp->agpdev);
75 if (retcode) return retcode;
76 dev->agp->acquired = 1;
80 int DRM(agp_release)(DRM_OS_IOCTL)
82 drm_device_t *dev = kdev->si_drv1;
84 if (!dev->agp || !dev->agp->acquired)
86 agp_release(dev->agp->agpdev);
87 dev->agp->acquired = 0;
92 void DRM(agp_do_release)(void)
96 agpdev = agp_find_device();
101 int DRM(agp_enable)(DRM_OS_IOCTL)
103 drm_device_t *dev = kdev->si_drv1;
106 if (!dev->agp || !dev->agp->acquired) return EINVAL;
108 mode = *(drm_agp_mode_t *) data;
110 dev->agp->mode = mode.mode;
111 agp_enable(dev->agp->agpdev, mode.mode);
112 dev->agp->base = dev->agp->info.ai_aperture_base;
113 dev->agp->enabled = 1;
117 int DRM(agp_alloc)(DRM_OS_IOCTL)
119 drm_device_t *dev = kdev->si_drv1;
120 drm_agp_buffer_t request;
121 drm_agp_mem_t *entry;
125 struct agp_memory_info info;
127 if (!dev->agp || !dev->agp->acquired) return EINVAL;
129 request = *(drm_agp_buffer_t *) data;
131 if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS)))
134 bzero(entry, sizeof(*entry));
136 pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
137 type = (u_int32_t) request.type;
139 if (!(handle = DRM(alloc_agp)(pages, type))) {
140 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
144 entry->handle = handle;
146 entry->pages = pages;
148 entry->next = dev->agp->memory;
149 if (dev->agp->memory) dev->agp->memory->prev = entry;
150 dev->agp->memory = entry;
152 agp_memory_info(dev->agp->agpdev, entry->handle, &info);
154 request.handle = (unsigned long) entry->handle;
155 request.physical = info.ami_physical;
157 *(drm_agp_buffer_t *) data = request;
162 static drm_agp_mem_t * DRM(agp_lookup_entry)(drm_device_t *dev, void *handle)
164 drm_agp_mem_t *entry;
166 for (entry = dev->agp->memory; entry; entry = entry->next) {
167 if (entry->handle == handle) return entry;
172 int DRM(agp_unbind)(DRM_OS_IOCTL)
174 drm_device_t *dev = kdev->si_drv1;
175 drm_agp_binding_t request;
176 drm_agp_mem_t *entry;
179 if (!dev->agp || !dev->agp->acquired) return EINVAL;
180 request = *(drm_agp_binding_t *) data;
181 if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
183 if (!entry->bound) return EINVAL;
184 retcode=DRM(unbind_agp)(entry->handle);
194 int DRM(agp_bind)(DRM_OS_IOCTL)
196 drm_device_t *dev = kdev->si_drv1;
197 drm_agp_binding_t request;
198 drm_agp_mem_t *entry;
202 DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);
203 if (!dev->agp || !dev->agp->acquired)
205 request = *(drm_agp_binding_t *) data;
206 if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
208 if (entry->bound) return EINVAL;
209 page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
210 if ((retcode = DRM(bind_agp)(entry->handle, page)))
212 entry->bound = dev->agp->base + (page << PAGE_SHIFT);
216 int DRM(agp_free)(DRM_OS_IOCTL)
218 drm_device_t *dev = kdev->si_drv1;
219 drm_agp_buffer_t request;
220 drm_agp_mem_t *entry;
222 if (!dev->agp || !dev->agp->acquired) return EINVAL;
223 request = *(drm_agp_buffer_t *) data;
224 if (!(entry = DRM(agp_lookup_entry)(dev, (void*) request.handle)))
226 if (entry->bound) DRM(unbind_agp)(entry->handle);
228 if (entry->prev) entry->prev->next = entry->next;
229 else dev->agp->memory = entry->next;
230 if (entry->next) entry->next->prev = entry->prev;
231 DRM(free_agp)(entry->handle, entry->pages);
232 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
236 drm_agp_head_t *DRM(agp_init)(void)
239 drm_agp_head_t *head = NULL;
240 int agp_available = 1;
242 agpdev = agp_find_device();
246 DRM_DEBUG("agp_available = %d\n", agp_available);
249 if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS)))
251 bzero((void *)head, sizeof(*head));
252 head->agpdev = agpdev;
253 agp_get_info(agpdev, &head->info);
256 switch (head->agp_info.chipset) {
257 case INTEL_GENERIC: head->chipset = "Intel"; break;
258 case INTEL_LX: head->chipset = "Intel 440LX"; break;
259 case INTEL_BX: head->chipset = "Intel 440BX"; break;
260 case INTEL_GX: head->chipset = "Intel 440GX"; break;
261 case INTEL_I810: head->chipset = "Intel i810"; break;
262 case VIA_GENERIC: head->chipset = "VIA"; break;
263 case VIA_VP3: head->chipset = "VIA VP3"; break;
264 case VIA_MVP3: head->chipset = "VIA MVP3"; break;
265 case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; break;
266 case SIS_GENERIC: head->chipset = "SiS"; break;
267 case AMD_GENERIC: head->chipset = "AMD"; break;
268 case AMD_IRONGATE: head->chipset = "AMD Irongate"; break;
269 case ALI_GENERIC: head->chipset = "ALi"; break;
270 case ALI_M1541: head->chipset = "ALi M1541"; break;
274 DRM_INFO("AGP at 0x%08x %dMB\n",
275 head->info.ai_aperture_base,
276 head->info.ai_aperture_size >> 20);
281 void DRM(agp_uninit)(void)
283 /* FIXME: What goes here */
287 agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type)
291 agpdev = agp_find_device();
295 return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
298 int DRM(agp_free_memory)(agp_memory *handle)
302 agpdev = agp_find_device();
303 if (!agpdev || !handle)
306 agp_free_memory(agpdev, handle);
310 int DRM(agp_bind_memory)(agp_memory *handle, off_t start)
314 agpdev = agp_find_device();
315 if (!agpdev || !handle)
318 return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
321 int DRM(agp_unbind_memory)(agp_memory *handle)
325 agpdev = agp_find_device();
326 if (!agpdev || !handle)
329 return agp_unbind_memory(agpdev, handle);