File: /usr/src/linux/drivers/pci/names.c
1 /*
2 * PCI Class and Device Name Tables
3 *
4 * Copyright 1993--1999 Drew Eckhardt, Frederic Potter,
5 * David Mosberger-Tang, Martin Mares
6 */
7
8 #include <linux/config.h>
9 #include <linux/types.h>
10 #include <linux/kernel.h>
11 #include <linux/pci.h>
12 #include <linux/init.h>
13
14 #ifdef CONFIG_PCI_NAMES
15
16 struct pci_device_info {
17 unsigned short device;
18 unsigned short seen;
19 const char *name;
20 };
21
22 struct pci_vendor_info {
23 unsigned short vendor;
24 unsigned short nr;
25 const char *name;
26 struct pci_device_info *devices;
27 };
28
29 /*
30 * This is ridiculous, but we want the strings in
31 * the .init section so that they don't take up
32 * real memory.. Parse the same file multiple times
33 * to get all the info.
34 */
35 #define VENDOR( vendor, name ) static char __vendorstr_##vendor[] __initdata = name;
36 #define ENDVENDOR()
37 #define DEVICE( vendor, device, name ) static char __devicestr_##vendor##device[] __initdata = name;
38 #include "devlist.h"
39
40
41 #define VENDOR( vendor, name ) static struct pci_device_info __devices_##vendor[] __initdata = {
42 #define ENDVENDOR() };
43 #define DEVICE( vendor, device, name ) { 0x##device, 0, __devicestr_##vendor##device },
44 #include "devlist.h"
45
46 static struct pci_vendor_info __initdata pci_vendor_list[] = {
47 #define VENDOR( vendor, name ) { 0x##vendor, sizeof(__devices_##vendor) / sizeof(struct pci_device_info), __vendorstr_##vendor, __devices_##vendor },
48 #define ENDVENDOR()
49 #define DEVICE( vendor, device, name )
50 #include "devlist.h"
51 };
52
53 #define VENDORS (sizeof(pci_vendor_list)/sizeof(struct pci_vendor_info))
54
55 void __init pci_name_device(struct pci_dev *dev)
56 {
57 const struct pci_vendor_info *vendor_p = pci_vendor_list;
58 int i = VENDORS;
59 char *name = dev->name;
60
61 do {
62 if (vendor_p->vendor == dev->vendor)
63 goto match_vendor;
64 vendor_p++;
65 } while (--i);
66
67 /* Couldn't find either the vendor nor the device */
68 sprintf(name, "PCI device %04x:%04x", dev->vendor, dev->device);
69 return;
70
71 match_vendor: {
72 struct pci_device_info *device_p = vendor_p->devices;
73 int i = vendor_p->nr;
74
75 while (i > 0) {
76 if (device_p->device == dev->device)
77 goto match_device;
78 device_p++;
79 i--;
80 }
81
82 /* Ok, found the vendor, but unknown device */
83 sprintf(name, "PCI device %04x:%04x (%s)", dev->vendor, dev->device, vendor_p->name);
84 return;
85
86 /* Full match */
87 match_device: {
88 char *n = name + sprintf(name, "%s %s", vendor_p->name, device_p->name);
89 int nr = device_p->seen + 1;
90 device_p->seen = nr;
91 if (nr > 1)
92 sprintf(n, " (#%d)", nr);
93 }
94 }
95 }
96
97 /*
98 * Class names. Not in .init section as they are needed in runtime.
99 */
100
101 static u16 pci_class_numbers[] = {
102 #define CLASS(x,y) 0x##x,
103 #include "classlist.h"
104 };
105
106 static char *pci_class_names[] = {
107 #define CLASS(x,y) y,
108 #include "classlist.h"
109 };
110
111 char *
112 pci_class_name(u32 class)
113 {
114 int i;
115
116 for(i=0; i<sizeof(pci_class_numbers)/sizeof(pci_class_numbers[0]); i++)
117 if (pci_class_numbers[i] == class)
118 return pci_class_names[i];
119 return NULL;
120 }
121
122 #else
123
124 void __init pci_name_device(struct pci_dev *dev)
125 {
126 }
127
128 char *
129 pci_class_name(u32 class)
130 {
131 return NULL;
132 }
133
134 #endif /* CONFIG_PCI_NAMES */
135
136