1 /* $NetBSD: radeon_agp.c,v 1.5 2021/12/18 23:45:43 riastradh Exp $ */
2
3 /*
4 * Copyright 2008 Red Hat Inc.
5 * Copyright 2009 Jerome Glisse.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the 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 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 * Dave Airlie
27 * Jerome Glisse <glisse@freedesktop.org>
28 */
29
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: radeon_agp.c,v 1.5 2021/12/18 23:45:43 riastradh Exp $");
32
33 #include <linux/pci.h>
34
35 #include <drm/drm_agpsupport.h>
36 #include <drm/drm_device.h>
37 #include <drm/radeon_drm.h>
38
39 #include "radeon.h"
40
41 #if IS_ENABLED(CONFIG_AGP)
42
43 struct radeon_agpmode_quirk {
44 u32 hostbridge_vendor;
45 u32 hostbridge_device;
46 u32 chip_vendor;
47 u32 chip_device;
48 u32 subsys_vendor;
49 u32 subsys_device;
50 u32 default_mode;
51 };
52
53 static struct radeon_agpmode_quirk radeon_agpmode_quirk_list[] = {
54 /* Intel E7505 Memory Controller Hub / RV350 AR [Radeon 9600XT] Needs AGPMode 4 (deb #515326) */
55 { PCI_VENDOR_ID_INTEL, 0x2550, PCI_VENDOR_ID_ATI, 0x4152, 0x1458, 0x4038, 4},
56 /* Intel 82865G/PE/P DRAM Controller/Host-Hub / Mobility 9800 Needs AGPMode 4 (deb #462590) */
57 { PCI_VENDOR_ID_INTEL, 0x2570, PCI_VENDOR_ID_ATI, 0x4a4e, PCI_VENDOR_ID_DELL, 0x5106, 4},
58 /* Intel 82865G/PE/P DRAM Controller/Host-Hub / RV280 [Radeon 9200 SE] Needs AGPMode 4 (lp #300304) */
59 { PCI_VENDOR_ID_INTEL, 0x2570, PCI_VENDOR_ID_ATI, 0x5964,
60 0x148c, 0x2073, 4},
61 /* Intel 82855PM Processor to I/O Controller / Mobility M6 LY Needs AGPMode 1 (deb #467235) */
62 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c59,
63 PCI_VENDOR_ID_IBM, 0x052f, 1},
64 /* Intel 82855PM host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #195051) */
65 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4e50,
66 PCI_VENDOR_ID_IBM, 0x0550, 1},
67 /* Intel 82855PM host bridge / RV250/M9 GL [Mobility FireGL 9000/Radeon 9000] needs AGPMode 1 (Thinkpad T40p) */
68 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c66,
69 PCI_VENDOR_ID_IBM, 0x054d, 1},
70 /* Intel 82855PM host bridge / Mobility M7 needs AGPMode 1 */
71 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c57,
72 PCI_VENDOR_ID_IBM, 0x0530, 1},
73 /* Intel 82855PM host bridge / FireGL Mobility T2 RV350 Needs AGPMode 2 (fdo #20647) */
74 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4e54,
75 PCI_VENDOR_ID_IBM, 0x054f, 2},
76 /* Intel 82855PM host bridge / Mobility M9+ / VaioPCG-V505DX Needs AGPMode 2 (fdo #17928) */
77 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x5c61,
78 PCI_VENDOR_ID_SONY, 0x816b, 2},
79 /* Intel 82855PM Processor to I/O Controller / Mobility M9+ Needs AGPMode 8 (phoronix forum) */
80 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x5c61,
81 PCI_VENDOR_ID_SONY, 0x8195, 8},
82 /* Intel 82830 830 Chipset Host Bridge / Mobility M6 LY Needs AGPMode 2 (fdo #17360)*/
83 { PCI_VENDOR_ID_INTEL, 0x3575, PCI_VENDOR_ID_ATI, 0x4c59,
84 PCI_VENDOR_ID_DELL, 0x00e3, 2},
85 /* Intel 82852/82855 host bridge / Mobility FireGL 9000 RV250 Needs AGPMode 1 (lp #296617) */
86 { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4c66,
87 PCI_VENDOR_ID_DELL, 0x0149, 1},
88 /* Intel 82855PM host bridge / Mobility FireGL 9000 RV250 Needs AGPMode 1 for suspend/resume */
89 { PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c66,
90 PCI_VENDOR_ID_IBM, 0x0531, 1},
91 /* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (deb #467460) */
92 { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
93 0x1025, 0x0061, 1},
94 /* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #203007) */
95 { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
96 0x1025, 0x0064, 1},
97 /* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #141551) */
98 { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
99 PCI_VENDOR_ID_ASUSTEK, 0x1942, 1},
100 /* Intel 82852/82855 host bridge / Mobility 9600/9700 Needs AGPMode 1 (deb #510208) */
101 { PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
102 0x10cf, 0x127f, 1},
103 /* ASRock K7VT4A+ AGP 8x / ATI Radeon 9250 AGP Needs AGPMode 4 (lp #133192) */
104 { 0x1849, 0x3189, PCI_VENDOR_ID_ATI, 0x5960,
105 0x1787, 0x5960, 4},
106 /* VIA K8M800 Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 4 (fdo #12544) */
107 { PCI_VENDOR_ID_VIA, 0x0204, PCI_VENDOR_ID_ATI, 0x5960,
108 0x17af, 0x2020, 4},
109 /* VIA KT880 Host Bridge / RV350 [Radeon 9550] Needs AGPMode 4 (fdo #19981) */
110 { PCI_VENDOR_ID_VIA, 0x0269, PCI_VENDOR_ID_ATI, 0x4153,
111 PCI_VENDOR_ID_ASUSTEK, 0x003c, 4},
112 /* VIA VT8363 Host Bridge / R200 QL [Radeon 8500] Needs AGPMode 2 (lp #141551) */
113 { PCI_VENDOR_ID_VIA, 0x0305, PCI_VENDOR_ID_ATI, 0x514c,
114 PCI_VENDOR_ID_ATI, 0x013a, 2},
115 /* VIA VT82C693A Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 2 (deb #515512) */
116 { PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_ATI, 0x5960,
117 PCI_VENDOR_ID_ASUSTEK, 0x004c, 2},
118 /* VIA VT82C693A Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 2 */
119 { PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_ATI, 0x5960,
120 PCI_VENDOR_ID_ASUSTEK, 0x0054, 2},
121 /* VIA VT8377 Host Bridge / R200 QM [Radeon 9100] Needs AGPMode 4 (deb #461144) */
122 { PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x514d,
123 0x174b, 0x7149, 4},
124 /* VIA VT8377 Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 4 (lp #312693) */
125 { PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x5960,
126 0x1462, 0x0380, 4},
127 /* VIA VT8377 Host Bridge / RV280 Needs AGPMode 4 (ati ML) */
128 { PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x5964,
129 0x148c, 0x2073, 4},
130 /* ATI Host Bridge / RV280 [M9+] Needs AGPMode 1 (phoronix forum) */
131 { PCI_VENDOR_ID_ATI, 0xcbb2, PCI_VENDOR_ID_ATI, 0x5c61,
132 PCI_VENDOR_ID_SONY, 0x8175, 1},
133 { 0, 0, 0, 0, 0, 0, 0 },
134 };
135 #endif
136
radeon_agp_init(struct radeon_device * rdev)137 int radeon_agp_init(struct radeon_device *rdev)
138 {
139 #if IS_ENABLED(CONFIG_AGP)
140 struct radeon_agpmode_quirk *p = radeon_agpmode_quirk_list;
141 struct drm_agp_mode mode;
142 struct drm_agp_info info;
143 uint32_t agp_status;
144 int default_mode;
145 bool is_v3;
146 int ret;
147
148 /* Acquire AGP. */
149 ret = drm_agp_acquire(rdev->ddev);
150 if (ret) {
151 DRM_ERROR("Unable to acquire AGP: %d\n", ret);
152 return ret;
153 }
154
155 ret = drm_agp_info(rdev->ddev, &info);
156 if (ret) {
157 drm_agp_release(rdev->ddev);
158 DRM_ERROR("Unable to get AGP info: %d\n", ret);
159 return ret;
160 }
161
162 if (rdev->ddev->agp->agp_info.aki_info.ai_aperture_size >> 20 < 32) {
163 drm_agp_release(rdev->ddev);
164 dev_warn(rdev->dev, "AGP aperture too small (%zuM) "
165 "need at least 32M, disabling AGP\n",
166 rdev->ddev->agp->agp_info.aki_info.ai_aperture_size >> 20);
167 return -EINVAL;
168 }
169
170 mode.mode = info.mode;
171 /* chips with the agp to pcie bridge don't have the AGP_STATUS register
172 * Just use the whatever mode the host sets up.
173 */
174 if (rdev->family <= CHIP_RV350)
175 agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;
176 else
177 agp_status = mode.mode;
178 is_v3 = !!(agp_status & RADEON_AGPv3_MODE);
179
180 if (is_v3) {
181 default_mode = (agp_status & RADEON_AGPv3_8X_MODE) ? 8 : 4;
182 } else {
183 if (agp_status & RADEON_AGP_4X_MODE) {
184 default_mode = 4;
185 } else if (agp_status & RADEON_AGP_2X_MODE) {
186 default_mode = 2;
187 } else {
188 default_mode = 1;
189 }
190 }
191
192 /* Apply AGPMode Quirks */
193 while (p && p->chip_device != 0) {
194 if (info.id_vendor == p->hostbridge_vendor &&
195 info.id_device == p->hostbridge_device &&
196 rdev->pdev->vendor == p->chip_vendor &&
197 rdev->pdev->device == p->chip_device &&
198 rdev->pdev->subsystem_vendor == p->subsys_vendor &&
199 rdev->pdev->subsystem_device == p->subsys_device) {
200 default_mode = p->default_mode;
201 }
202 ++p;
203 }
204
205 if (radeon_agpmode > 0) {
206 if ((radeon_agpmode < (is_v3 ? 4 : 1)) ||
207 (radeon_agpmode > (is_v3 ? 8 : 4)) ||
208 (radeon_agpmode & (radeon_agpmode - 1))) {
209 DRM_ERROR("Illegal AGP Mode: %d (valid %s), leaving at %d\n",
210 radeon_agpmode, is_v3 ? "4, 8" : "1, 2, 4",
211 default_mode);
212 radeon_agpmode = default_mode;
213 } else {
214 DRM_INFO("AGP mode requested: %d\n", radeon_agpmode);
215 }
216 } else {
217 radeon_agpmode = default_mode;
218 }
219
220 mode.mode &= ~RADEON_AGP_MODE_MASK;
221 if (is_v3) {
222 switch (radeon_agpmode) {
223 case 8:
224 mode.mode |= RADEON_AGPv3_8X_MODE;
225 break;
226 case 4:
227 default:
228 mode.mode |= RADEON_AGPv3_4X_MODE;
229 break;
230 }
231 } else {
232 switch (radeon_agpmode) {
233 case 4:
234 mode.mode |= RADEON_AGP_4X_MODE;
235 break;
236 case 2:
237 mode.mode |= RADEON_AGP_2X_MODE;
238 break;
239 case 1:
240 default:
241 mode.mode |= RADEON_AGP_1X_MODE;
242 break;
243 }
244 }
245
246 mode.mode &= ~RADEON_AGP_FW_MODE; /* disable fw */
247 ret = drm_agp_enable(rdev->ddev, mode);
248 if (ret) {
249 DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode);
250 drm_agp_release(rdev->ddev);
251 return ret;
252 }
253
254 rdev->mc.agp_base = rdev->ddev->agp->agp_info.aki_info.ai_aperture_base;
255 rdev->mc.gtt_size = rdev->ddev->agp->agp_info.aki_info.ai_aperture_size;
256 rdev->mc.gtt_start = rdev->mc.agp_base;
257 rdev->mc.gtt_end = rdev->mc.gtt_start + rdev->mc.gtt_size - 1;
258 dev_info(rdev->dev, "GTT: %"PRIu64"M 0x%08"PRIX64" - 0x%08"PRIX64"\n",
259 rdev->mc.gtt_size >> 20, rdev->mc.gtt_start, rdev->mc.gtt_end);
260
261 #ifdef __NetBSD__
262 pmap_pv_track(rdev->mc.agp_base, rdev->mc.gtt_size);
263 #endif
264
265 /* workaround some hw issues */
266 if (rdev->family < CHIP_R200) {
267 WREG32(RADEON_AGP_CNTL, RREG32(RADEON_AGP_CNTL) | 0x000e0000);
268 }
269 return 0;
270 #else
271 return 0;
272 #endif
273 }
274
radeon_agp_resume(struct radeon_device * rdev)275 void radeon_agp_resume(struct radeon_device *rdev)
276 {
277 #if IS_ENABLED(CONFIG_AGP)
278 int r;
279 if (rdev->flags & RADEON_IS_AGP) {
280 r = radeon_agp_init(rdev);
281 if (r)
282 dev_warn(rdev->dev, "radeon AGP reinit failed\n");
283 }
284 #endif
285 }
286
radeon_agp_fini(struct radeon_device * rdev)287 void radeon_agp_fini(struct radeon_device *rdev)
288 {
289 #if IS_ENABLED(CONFIG_AGP)
290 if (rdev->ddev->agp && rdev->ddev->agp->acquired) {
291 #ifdef __NetBSD__
292 pmap_pv_untrack(rdev->mc.agp_base, rdev->mc.gtt_size);
293 #endif
294 drm_agp_release(rdev->ddev);
295 }
296 #endif
297 }
298
radeon_agp_suspend(struct radeon_device * rdev)299 void radeon_agp_suspend(struct radeon_device *rdev)
300 {
301 radeon_agp_fini(rdev);
302 }
303