1 /*
2 * Copyright © 2007 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 *
26 */
27
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <stdarg.h>
32 #include <pciaccess.h>
33 #include <err.h>
34 #include "intel_chipset.h"
35 #include "intel_io.h"
36 #include "intel_reg.h"
37
38 static void
print_clock(const char * name,int clock)39 print_clock(const char *name, int clock) {
40 if (clock == -1)
41 printf("%s clock: unknown", name);
42 else
43 printf("%s clock: %d Mhz", name, clock);
44 }
45
46 static int
print_clock_info(struct pci_device * pci_dev)47 print_clock_info(struct pci_device *pci_dev)
48 {
49 uint32_t devid = pci_dev->device_id;
50 uint16_t gcfgc;
51
52 if (IS_GM45(devid)) {
53 int core_clock = -1;
54
55 pci_device_cfg_read_u16(pci_dev, &gcfgc, I915_GCFGC);
56
57 switch (gcfgc & 0xf) {
58 case 8:
59 core_clock = 266;
60 break;
61 case 9:
62 core_clock = 320;
63 break;
64 case 11:
65 core_clock = 400;
66 break;
67 case 13:
68 core_clock = 533;
69 break;
70 }
71 print_clock("core", core_clock);
72 } else if (IS_965(devid) && IS_MOBILE(devid)) {
73 int render_clock = -1, sampler_clock = -1;
74
75 pci_device_cfg_read_u16(pci_dev, &gcfgc, I915_GCFGC);
76
77 switch (gcfgc & 0xf) {
78 case 2:
79 render_clock = 250; sampler_clock = 267;
80 break;
81 case 3:
82 render_clock = 320; sampler_clock = 333;
83 break;
84 case 4:
85 render_clock = 400; sampler_clock = 444;
86 break;
87 case 5:
88 render_clock = 500; sampler_clock = 533;
89 break;
90 }
91
92 print_clock("render", render_clock);
93 printf(" ");
94 print_clock("sampler", sampler_clock);
95 } else if (IS_945(devid) && IS_MOBILE(devid)) {
96 int render_clock = -1, display_clock = -1;
97
98 pci_device_cfg_read_u16(pci_dev, &gcfgc, I915_GCFGC);
99
100 switch (gcfgc & 0x7) {
101 case 0:
102 render_clock = 166;
103 break;
104 case 1:
105 render_clock = 200;
106 break;
107 case 3:
108 render_clock = 250;
109 break;
110 case 5:
111 render_clock = 400;
112 break;
113 }
114
115 switch (gcfgc & 0x70) {
116 case 0:
117 display_clock = 200;
118 break;
119 case 4:
120 display_clock = 320;
121 break;
122 }
123 if (gcfgc & (1 << 7))
124 display_clock = 133;
125
126 print_clock("render", render_clock);
127 printf(" ");
128 print_clock("display", display_clock);
129 } else if (IS_915(devid) && IS_MOBILE(devid)) {
130 int render_clock = -1, display_clock = -1;
131
132 pci_device_cfg_read_u16(pci_dev, &gcfgc, I915_GCFGC);
133
134 switch (gcfgc & 0x7) {
135 case 0:
136 render_clock = 160;
137 break;
138 case 1:
139 render_clock = 190;
140 break;
141 case 4:
142 render_clock = 333;
143 break;
144 }
145 if (gcfgc & (1 << 13))
146 render_clock = 133;
147
148 switch (gcfgc & 0x70) {
149 case 0:
150 display_clock = 190;
151 break;
152 case 4:
153 display_clock = 333;
154 break;
155 }
156 if (gcfgc & (1 << 7))
157 display_clock = 133;
158
159 print_clock("render", render_clock);
160 printf(" ");
161 print_clock("display", display_clock);
162 }
163
164 printf("\n");
165 return -1;
166 }
167
main(int argc,char ** argv)168 int main(int argc, char **argv)
169 {
170 struct pci_device *dev, *bridge;
171 int error;
172 uint8_t stepping;
173 const char *step_desc = "??";
174
175 error = pci_system_init();
176 if (error != 0) {
177 fprintf(stderr, "Couldn't initialize PCI system: %s\n",
178 strerror(error));
179 exit(1);
180 }
181
182 /* Grab the graphics card */
183 dev = pci_device_find_by_slot(0, 0, 2, 0);
184 if (dev == NULL)
185 errx(1, "Couldn't find graphics card");
186
187 error = pci_device_probe(dev);
188 if (error != 0) {
189 fprintf(stderr, "Couldn't probe graphics card: %s\n",
190 strerror(error));
191 exit(1);
192 }
193
194 if (dev->vendor_id != 0x8086)
195 errx(1, "Graphics card is non-intel");
196
197 bridge = pci_device_find_by_slot(0, 0, 0, 0);
198 if (dev == NULL)
199 errx(1, "Couldn't bridge");
200
201 error = pci_device_cfg_read_u8(bridge, &stepping, 8);
202 if (error != 0) {
203 fprintf(stderr, "Couldn't read revision ID: %s\n",
204 strerror(error));
205 exit(1);
206 }
207
208 switch (dev->device_id) {
209 case PCI_CHIP_I915_G:
210 if (stepping < 0x04)
211 step_desc = "<B1";
212 else if (stepping == 0x04)
213 step_desc = "B1";
214 else if (stepping == 0x0e)
215 step_desc = "C2";
216 else if (stepping > 0x0e)
217 step_desc = ">C2";
218 else
219 step_desc = ">B1 <C2";
220 break;
221 case PCI_CHIP_I915_GM:
222 if (stepping < 0x03)
223 step_desc = "<B1";
224 else if (stepping == 0x03)
225 step_desc = "B1/C0";
226 else if (stepping == 0x04)
227 step_desc = "C1/C2";
228 else
229 step_desc = ">C2";
230 break;
231 case PCI_CHIP_I945_GM:
232 if (stepping < 0x03)
233 step_desc = "<A3";
234 else if (stepping == 0x03)
235 step_desc = "A3";
236 else
237 step_desc = ">A3";
238 break;
239 case PCI_CHIP_I965_G:
240 case PCI_CHIP_I965_Q:
241 if (stepping < 0x02)
242 step_desc = "<C1";
243 else if (stepping == 0x02)
244 step_desc = "C1/C2";
245 else
246 step_desc = ">C2";
247 break;
248 case PCI_CHIP_I965_GM:
249 if (stepping < 0x03)
250 step_desc = "<C0";
251 else if (stepping == 0x03)
252 step_desc = "C0";
253 else
254 step_desc = ">C0";
255 break;
256 case PCI_CHIP_I965_G_1:
257 if (stepping < 0x03)
258 step_desc = "<E0";
259 else if (stepping == 0x03)
260 step_desc = "E0";
261 else
262 step_desc = ">E0";
263 break;
264 case PCI_CHIP_GM45_GM:
265 if (stepping < 0x07)
266 step_desc = "<B3";
267 else if (stepping == 0x03)
268 step_desc = "B3";
269 else
270 step_desc = ">B3";
271 break;
272 case PCI_CHIP_G45_G:
273 case PCI_CHIP_Q45_G:
274 case PCI_CHIP_G41_G:
275 if (stepping < 0x02)
276 step_desc = "<A2";
277 else if (stepping == 0x02)
278 step_desc = "A2";
279 else if (stepping == 0x03)
280 step_desc = "A3";
281 else
282 step_desc = ">A3";
283 break;
284 }
285
286 printf("Vendor: 0x%04x, Device: 0x%04x, Revision: 0x%02x (%s)\n",
287 dev->vendor_id,
288 dev->device_id,
289 stepping,
290 step_desc);
291
292 print_clock_info(dev);
293
294 return 0;
295 }
296