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 "common.h"
35
36int main(int argc, char **argv)
37{
38    struct pci_device *dev, *bridge;
39    int err;
40    uint8_t stepping;
41    char *step_desc = "??";
42
43    err = pci_system_init();
44    if (err != 0) {
45	fprintf(stderr, "Couldn't initialize PCI system: %s\n", strerror(err));
46	exit(1);
47    }
48
49    /* Grab the graphics card */
50    dev = pci_device_find_by_slot(0, 0, 2, 0);
51    if (dev == NULL)
52	errx(1, "Couldn't find graphics card");
53
54    err = pci_device_probe(dev);
55    if (err != 0) {
56	fprintf(stderr, "Couldn't probe graphics card: %s\n", strerror(err));
57	exit(1);
58    }
59
60    if (dev->vendor_id != 0x8086)
61	errx(1, "Graphics card is non-intel");
62
63    bridge = pci_device_find_by_slot(0, 0, 0, 0);
64    if (dev == NULL)
65	errx(1, "Couldn't bridge");
66
67    err = pci_device_cfg_read_u8(bridge, &stepping, 8);
68    if (err != 0) {
69	fprintf(stderr, "Couldn't read revision ID: %s\n", strerror(err));
70	exit(1);
71    }
72
73    switch (dev->device_id) {
74    case PCI_CHIP_I915_G:
75	if (stepping < 0x04)
76	    step_desc = "<B1";
77	else if (stepping == 0x04)
78	    step_desc = "B1";
79	else if (stepping == 0x0e)
80	    step_desc = "C2";
81	else if (stepping > 0x0e)
82	    step_desc = ">C2";
83	else
84	    step_desc = ">B1 <C2";
85	break;
86    case PCI_CHIP_I915_GM:
87	if (stepping < 0x03)
88	    step_desc = "<B1";
89	else if (stepping == 0x03)
90	    step_desc = "B1/C0";
91	else if (stepping == 0x04)
92	    step_desc = "C1/C2";
93	else
94	    step_desc = ">C2";
95	break;
96    case PCI_CHIP_I945_GM:
97	if (stepping < 0x03)
98	    step_desc = "<A3";
99	else if (stepping == 0x03)
100	    step_desc = "A3";
101	else
102	    step_desc = ">A3";
103	break;
104    case PCI_CHIP_I965_G:
105    case PCI_CHIP_I965_Q:
106	if (stepping < 0x02)
107	    step_desc = "<C1";
108	else if (stepping == 0x02)
109	    step_desc = "C1/C2";
110	else
111	    step_desc = ">C2";
112	break;
113    case PCI_CHIP_I965_GM:
114	if (stepping < 0x03)
115	    step_desc = "<C0";
116	else if (stepping == 0x03)
117	    step_desc = "C0";
118	else
119	    step_desc = ">C0";
120	break;
121    case PCI_CHIP_G35_G:
122	if (stepping < 0x03)
123	    step_desc = "<E0";
124	else if (stepping == 0x03)
125	    step_desc = "E0";
126	else
127	    step_desc = ">E0";
128	break;
129    }
130
131    printf("Vendor: 0x%04x, Device: 0x%04x, Revision: 0x%02x (%s)\n",
132	   dev->vendor_id,
133	   dev->device_id,
134	   stepping,
135	   step_desc);
136    return 0;
137}
138