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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [char/] [drm-4.0/] [agpsupport.c] - Blame information for rev 1765

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1 1275 phoenix
/* agpsupport.c -- DRM support for AGP/GART backend -*- linux-c -*-
2
 * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com
3
 *
4
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6
 * All Rights Reserved.
7
 *
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:
14
 *
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
17
 * Software.
18
 *
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
 * PRECISION INSIGHT 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 OTHER
25
 * DEALINGS IN THE SOFTWARE.
26
 *
27
 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
28
 *
29
 */
30
 
31
#define __NO_VERSION__
32
#include "drmP.h"
33
#include <linux/module.h>
34
#if LINUX_VERSION_CODE < 0x020400
35
#include "agpsupport-pre24.h"
36
#else
37
#define DRM_AGP_GET (drm_agp_t *)inter_module_get("drm_agp")
38
#define DRM_AGP_PUT inter_module_put("drm_agp")
39
#endif
40
 
41
static const drm_agp_t *drm_agp = NULL;
42
 
43
int drm_agp_info(struct inode *inode, struct file *filp, unsigned int cmd,
44
                 unsigned long arg)
45
{
46
        drm_file_t       *priv   = filp->private_data;
47
        drm_device_t     *dev    = priv->dev;
48
        agp_kern_info    *kern;
49
        drm_agp_info_t   info;
50
 
51
        if (!dev->agp->acquired || !drm_agp->copy_info) return -EINVAL;
52
 
53
        kern                   = &dev->agp->agp_info;
54
        info.agp_version_major = kern->version.major;
55
        info.agp_version_minor = kern->version.minor;
56
        info.mode              = kern->mode;
57
        info.aperture_base     = kern->aper_base;
58
        info.aperture_size     = kern->aper_size * 1024 * 1024;
59
        info.memory_allowed    = kern->max_memory << PAGE_SHIFT;
60
        info.memory_used       = kern->current_memory << PAGE_SHIFT;
61
        info.id_vendor         = kern->device->vendor;
62
        info.id_device         = kern->device->device;
63
 
64
        if (copy_to_user((drm_agp_info_t *)arg, &info, sizeof(info)))
65
                return -EFAULT;
66
        return 0;
67
}
68
 
69
int drm_agp_acquire(struct inode *inode, struct file *filp, unsigned int cmd,
70
                    unsigned long arg)
71
{
72
        drm_file_t       *priv   = filp->private_data;
73
        drm_device_t     *dev    = priv->dev;
74
        int              retcode;
75
 
76
        if (dev->agp->acquired || !drm_agp->acquire) return -EINVAL;
77
        if ((retcode = drm_agp->acquire())) return retcode;
78
        dev->agp->acquired = 1;
79
        return 0;
80
}
81
 
82
int drm_agp_release(struct inode *inode, struct file *filp, unsigned int cmd,
83
                    unsigned long arg)
84
{
85
        drm_file_t       *priv   = filp->private_data;
86
        drm_device_t     *dev    = priv->dev;
87
 
88
        if (!dev->agp->acquired || !drm_agp->release) return -EINVAL;
89
        drm_agp->release();
90
        dev->agp->acquired = 0;
91
        return 0;
92
 
93
}
94
 
95
void _drm_agp_release(void)
96
{
97
        if (drm_agp->release) drm_agp->release();
98
}
99
 
100
int drm_agp_enable(struct inode *inode, struct file *filp, unsigned int cmd,
101
                   unsigned long arg)
102
{
103
        drm_file_t       *priv   = filp->private_data;
104
        drm_device_t     *dev    = priv->dev;
105
        drm_agp_mode_t   mode;
106
 
107
        if (!dev->agp->acquired || !drm_agp->enable) return -EINVAL;
108
 
109
        if (copy_from_user(&mode, (drm_agp_mode_t *)arg, sizeof(mode)))
110
                return -EFAULT;
111
 
112
        dev->agp->mode    = mode.mode;
113
        drm_agp->enable(mode.mode);
114
        dev->agp->base    = dev->agp->agp_info.aper_base;
115
        dev->agp->enabled = 1;
116
        return 0;
117
}
118
 
119
int drm_agp_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
120
                  unsigned long arg)
121
{
122
        drm_file_t       *priv   = filp->private_data;
123
        drm_device_t     *dev    = priv->dev;
124
        drm_agp_buffer_t request;
125
        drm_agp_mem_t    *entry;
126
        agp_memory       *memory;
127
        unsigned long    pages;
128
        u32              type;
129
        if (!dev->agp->acquired) return -EINVAL;
130
        if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request)))
131
                return -EFAULT;
132
        if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS)))
133
                return -ENOMEM;
134
 
135
        memset(entry, 0, sizeof(*entry));
136
 
137
        pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
138
        type = (u32) request.type;
139
 
140
        if (!(memory = drm_alloc_agp(pages, type))) {
141
                drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
142
                return -ENOMEM;
143
        }
144
 
145
        entry->handle    = (unsigned long)memory->memory;
146
        entry->memory    = memory;
147
        entry->bound     = 0;
148
        entry->pages     = pages;
149
        entry->prev      = NULL;
150
        entry->next      = dev->agp->memory;
151
        if (dev->agp->memory) dev->agp->memory->prev = entry;
152
        dev->agp->memory = entry;
153
 
154
        request.handle   = entry->handle;
155
        request.physical = memory->physical;
156
 
157
        if (copy_to_user((drm_agp_buffer_t *)arg, &request, sizeof(request))) {
158
                dev->agp->memory       = entry->next;
159
                dev->agp->memory->prev = NULL;
160
                drm_free_agp(memory, pages);
161
                drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
162
                return -EFAULT;
163
        }
164
        return 0;
165
}
166
 
167
static drm_agp_mem_t *drm_agp_lookup_entry(drm_device_t *dev,
168
                                           unsigned long handle)
169
{
170
        drm_agp_mem_t *entry;
171
 
172
        for (entry = dev->agp->memory; entry; entry = entry->next) {
173
                if (entry->handle == handle) return entry;
174
        }
175
        return NULL;
176
}
177
 
178
int drm_agp_unbind(struct inode *inode, struct file *filp, unsigned int cmd,
179
                   unsigned long arg)
180
{
181
        drm_file_t        *priv  = filp->private_data;
182
        drm_device_t      *dev   = priv->dev;
183
        drm_agp_binding_t request;
184
        drm_agp_mem_t     *entry;
185
 
186
        if (!dev->agp->acquired) return -EINVAL;
187
        if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request)))
188
                return -EFAULT;
189
        if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
190
                return -EINVAL;
191
        if (!entry->bound) return -EINVAL;
192
        return drm_unbind_agp(entry->memory);
193
}
194
 
195
int drm_agp_bind(struct inode *inode, struct file *filp, unsigned int cmd,
196
                 unsigned long arg)
197
{
198
        drm_file_t        *priv  = filp->private_data;
199
        drm_device_t      *dev   = priv->dev;
200
        drm_agp_binding_t request;
201
        drm_agp_mem_t     *entry;
202
        int               retcode;
203
        int               page;
204
 
205
        if (!dev->agp->acquired || !drm_agp->bind_memory) return -EINVAL;
206
        if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request)))
207
                return -EFAULT;
208
        if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
209
                return -EINVAL;
210
        if (entry->bound) return -EINVAL;
211
        page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
212
        if ((retcode = drm_bind_agp(entry->memory, page))) return retcode;
213
        entry->bound = dev->agp->base + (page << PAGE_SHIFT);
214
        DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n",
215
                  dev->agp->base, entry->bound);
216
        return 0;
217
}
218
 
219
int drm_agp_free(struct inode *inode, struct file *filp, unsigned int cmd,
220
                 unsigned long arg)
221
{
222
        drm_file_t       *priv   = filp->private_data;
223
        drm_device_t     *dev    = priv->dev;
224
        drm_agp_buffer_t request;
225
        drm_agp_mem_t    *entry;
226
 
227
        if (!dev->agp->acquired) return -EINVAL;
228
        if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request)))
229
                return -EFAULT;
230
        if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
231
                return -EINVAL;
232
        if (entry->bound) drm_unbind_agp(entry->memory);
233
 
234
        if (entry->prev) entry->prev->next = entry->next;
235
        else             dev->agp->memory  = entry->next;
236
        if (entry->next) entry->next->prev = entry->prev;
237
        drm_free_agp(entry->memory, entry->pages);
238
        drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
239
        return 0;
240
}
241
 
242
drm_agp_head_t *drm_agp_init(void)
243
{
244
        drm_agp_head_t *head         = NULL;
245
 
246
        drm_agp = DRM_AGP_GET;
247
        if (drm_agp) {
248
                if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS)))
249
                        return NULL;
250
                memset((void *)head, 0, sizeof(*head));
251
                drm_agp->copy_info(&head->agp_info);
252
                if (head->agp_info.chipset == NOT_SUPPORTED) {
253
                        drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS);
254
                        return NULL;
255
                }
256
                head->memory = NULL;
257
                switch (head->agp_info.chipset) {
258
                case INTEL_GENERIC:     head->chipset = "Intel";         break;
259
                case INTEL_LX:          head->chipset = "Intel 440LX";   break;
260
                case INTEL_BX:          head->chipset = "Intel 440BX";   break;
261
                case INTEL_GX:          head->chipset = "Intel 440GX";   break;
262
                case INTEL_I810:        head->chipset = "Intel i810";    break;
263
 
264
#if LINUX_VERSION_CODE >= 0x020400
265
                case INTEL_I840:        head->chipset = "Intel i840";    break;
266
#endif
267
                case INTEL_460GX:       head->chipset = "Intel 460GX";   break;
268
 
269
                case VIA_GENERIC:       head->chipset = "VIA";           break;
270
                case VIA_VP3:           head->chipset = "VIA VP3";       break;
271
                case VIA_MVP3:          head->chipset = "VIA MVP3";      break;
272
 
273
#if LINUX_VERSION_CODE >= 0x020400
274
                case VIA_MVP4:          head->chipset = "VIA MVP4";      break;
275
                case VIA_APOLLO_KX133:  head->chipset = "VIA Apollo KX133";
276
                        break;
277
                case VIA_APOLLO_KT133:  head->chipset = "VIA Apollo KT133";
278
                        break;
279
                case VIA_APOLLO_KM266:  head->chipset = "VIA Apollo KM266 / KL266";
280
                        break;
281
                case VIA_APOLLO_KT400:  head->chipset = "VIA Apollo KT400";
282
                        break;
283
                case VIA_APOLLO_P4X400: head->chipset = "VIA Apollo P4X400";
284
                        break;
285
#endif
286
 
287
                case VIA_APOLLO_PRO:    head->chipset = "VIA Apollo Pro";
288
                        break;
289
                case SIS_GENERIC:       head->chipset = "SiS";           break;
290
                case AMD_GENERIC:       head->chipset = "AMD";           break;
291
                case AMD_IRONGATE:      head->chipset = "AMD Irongate";  break;
292
                case ALI_GENERIC:       head->chipset = "ALi";           break;
293
                case ALI_M1541:         head->chipset = "ALi M1541";     break;
294
                case ALI_M1621:         head->chipset = "ALi M1621";     break;
295
                case ALI_M1631:         head->chipset = "ALi M1631";     break;
296
                case ALI_M1632:         head->chipset = "ALi M1632";     break;
297
                case ALI_M1641:         head->chipset = "ALi M1641";     break;
298
                case ALI_M1647:         head->chipset = "ALi M1647";     break;
299
                case ALI_M1651:         head->chipset = "ALi M1651";     break;
300
                case SVWRKS_GENERIC:    head->chipset = "Serverworks Generic";
301
                        break;
302
                case SVWRKS_HE:         head->chipset = "Serverworks HE"; break;
303
                case SVWRKS_LE:         head->chipset = "Serverworks LE"; break;
304
                case HP_ZX1:            head->chipset = "HP ZX1";       break;
305
 
306
                default:                head->chipset = "Unknown";       break;
307
                }
308
                DRM_INFO("AGP %d.%d on %s @ 0x%08lx %ZuMB\n",
309
                         head->agp_info.version.major,
310
                         head->agp_info.version.minor,
311
                         head->chipset,
312
                         head->agp_info.aper_base,
313
                         head->agp_info.aper_size);
314
        }
315
        return head;
316
}
317
 
318
void drm_agp_uninit(void)
319
{
320
        DRM_AGP_PUT;
321
        drm_agp = NULL;
322
}
323
 
324
agp_memory *drm_agp_allocate_memory(size_t pages, u32 type)
325
{
326
        if (!drm_agp->allocate_memory) return NULL;
327
        return drm_agp->allocate_memory(pages, type);
328
}
329
 
330
int drm_agp_free_memory(agp_memory *handle)
331
{
332
        if (!handle || !drm_agp->free_memory) return 0;
333
        drm_agp->free_memory(handle);
334
        return 1;
335
}
336
 
337
int drm_agp_bind_memory(agp_memory *handle, off_t start)
338
{
339
        if (!handle || !drm_agp->bind_memory) return -EINVAL;
340
        return drm_agp->bind_memory(handle, start);
341
}
342
 
343
int drm_agp_unbind_memory(agp_memory *handle)
344
{
345
        if (!handle || !drm_agp->unbind_memory) return -EINVAL;
346
        return drm_agp->unbind_memory(handle);
347
}

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