1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 #include "superiotool.h"
4
5 #define DEVICE_ID_VT82C686_REG 0xe0
6 #define DEVICE_REV_VT82C686_REG 0xe1
7
8 #define DEVICE_ID_VT1211_REG 0x20
9 #define DEVICE_REV_VT1211_REG 0x21
10
11 static const struct superio_registers reg_table[] = {
12 {0x3c00, "VT82C686A/VT82C686B", {
13 {EOT}}},
14 {0x3c01, "VT1211", {
15 {NOLDN, NULL,
16 {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,
17 0x2e,0x2f,EOT},
18 {0x3c,0x01,0x00,0x11,0x00,0x00,0x00,0x00,0x00,0x00,
19 0x00,0x00,EOT}},
20 {0x0, "Floppy Disk Controller (FDC)",
21 {0x30,0x60,0x61,0x70,0x74,0xf0,0xf1,EOT},
22 {0x00,0x03,0xf0,0x06,0x01,0x00,0x00,EOT}},
23 {0x1, "Parallel Port (PP)",
24 {0x30,0x60,0x61,0x70,0x74,0xf0,EOT},
25 {0x03,0x03,0x78,0x05,0x00,0x00,EOT}},
26 {0x2, "Serial Port 1 (UART1)",
27 {0x30,0x60,0x61,0x70,0xf0,EOT},
28 {0x00,0x03,0xf8,0x04,0x00,EOT}},
29 {0x3, "Serial Port 2 (UART2)",
30 {0x30,0x60,0x61,0x70,0xf0,EOT},
31 {0x00,0x02,0xf8,0x03,0x00,EOT}},
32 {0x6, "MIDI",
33 {0x30,0x60,0x61,0x70,EOT},
34 {0x00,0x03,0x30,0x00,EOT}},
35 {0x7, "Game Port (GMP)",
36 {0x30,0x60,0x61,EOT},
37 {0x00,0x02,0x00,EOT}},
38 {0x8, "GPIO",
39 {0x30,0x60,0x61,0x70,0xf0,0xf1,0xf2,EOT},
40 {0x00,0xe9,0x00,0x00,0x00,0x00,0x00,EOT}},
41 {0x9, "Watch Dog (WDG)",
42 {0x30,0x60,0x61,0x70,0xf0,EOT},
43 {0x00,0xea,0x00,0x00,0x00,EOT}},
44 {0xa, "Wake-up Control (WUC)",
45 {0x30,0x60,0x61,0x70,EOT},
46 {0x00,0xeb,0x00,0x00,EOT}},
47 {0xb, "Hardware Monitor (HM)",
48 {0x30,0x60,0x61,0x70,EOT},
49 {0x00,0xec,0x00,0x00,EOT}},
50 {0xc, "Very Fast IR (VFIR)",
51 {0x30,0x60,0x61,0x70,0x74,0xf0,EOT},
52 {0x00,0xe8,0x00,0x00,0x06,0x00,EOT}},
53 {0xd, "Flash ROM (ROM)",
54 {0x30,0xf0,EOT},
55 {0x01,0x00,EOT}},
56 {EOT}}},
57 {EOT}
58 };
59
60 static uint8_t vt82c686_conf = 0;
61
enter_conf_mode_via_vt82c686(void)62 static int enter_conf_mode_via_vt82c686(void)
63 {
64 struct pci_dev *dev;
65
66 dev = pci_dev_find(0x1106, 0x0686);
67 if (!dev) {
68 if (verbose)
69 printf(" PCI device 1106:0686 not found.\n");
70 return 1;
71 }
72
73 vt82c686_conf = pci_read_byte(dev, 0x85);
74 if (verbose)
75 printf(" Super I/O %sabled, Super I/O configuration %sabled\n",
76 (vt82c686_conf & (1 << 0)) ? "en" : "dis",
77 (vt82c686_conf & (1 << 1)) ? "en" : "dis");
78
79 /* If the Super I/O is not enabled, skip it. */
80 if (!(vt82c686_conf & (1 << 0)))
81 return 1;
82
83 /* Enable Super I/O configuration mode. */
84 pci_write_byte(dev, 0x85, vt82c686_conf | (1 << 1));
85
86 return 0;
87 }
88
exit_conf_mode_via_vt82c686(void)89 static void exit_conf_mode_via_vt82c686(void)
90 {
91 struct pci_dev *dev;
92
93 dev = pci_dev_find(0x1106, 0x0686);
94 if (!dev) {
95 printf("Bug: PCI device 1106:0686 not found during shutdown.\n"
96 "Please report to [email protected].\n");
97 return;
98 }
99
100 /* Restore (disable?) Super I/O configuration mode setting. */
101 pci_write_byte(dev, 0x85, vt82c686_conf);
102 }
103
probe_idregs_via(uint16_t port)104 void probe_idregs_via(uint16_t port)
105 {
106 uint16_t id;
107 uint8_t devid;
108 uint8_t rev;
109
110 if (port == 0x3f0) {
111 probing_for("VIA", "(init=vt82c686) ", port);
112 if (enter_conf_mode_via_vt82c686())
113 return;
114
115 devid = regval(port, DEVICE_ID_VT82C686_REG);
116 rev = regval(port, DEVICE_REV_VT82C686_REG);
117 id = devid << 8;
118
119 if (superio_unknown(reg_table, id)) {
120 if (verbose)
121 printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
122 } else {
123 printf("Found VIA %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
124 get_superio_name(reg_table, id), devid, rev, port);
125 chip_found = 1;
126 }
127 exit_conf_mode_via_vt82c686();
128 if (chip_found)
129 return;
130 } else {
131 probing_for("VIA", "(init=0x87,0x87) ", port);
132 enter_conf_mode_winbond_fintek_ite_8787(port);
133
134 devid = regval(port, DEVICE_ID_VT1211_REG);
135 rev = regval(port, DEVICE_REV_VT1211_REG);
136 id = (devid << 8) | 1;
137
138 if (superio_unknown(reg_table, id)) {
139 if (verbose)
140 printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
141 } else {
142 printf("Found VIA %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
143 get_superio_name(reg_table, id), devid, rev, port);
144 chip_found = 1;
145 dump_superio("VIA", reg_table, port, id, LDN_SEL);
146 }
147 }
148
149 exit_conf_mode_winbond_fintek_ite_8787(port);
150 }
151
print_via_chips(void)152 void print_via_chips(void)
153 {
154 print_vendor_chips("VIA", reg_table);
155 }
156