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 const char __vendorstr_##vendor[] __initdata = name;
  36 #define ENDVENDOR()
  37 #define DEVICE( vendor, device, name )  static const 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 const 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