~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/x86/pci/early.c

Version: ~ [ linux-5.0-rc6 ] ~ [ linux-4.20.10 ] ~ [ linux-4.19.23 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.101 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.158 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.174 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.134 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.63 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 #include <linux/kernel.h>
  2 #include <linux/pci.h>
  3 #include <asm/pci-direct.h>
  4 #include <asm/io.h>
  5 #include <asm/pci_x86.h>
  6 
  7 /* Direct PCI access. This is used for PCI accesses in early boot before
  8    the PCI subsystem works. */
  9 
 10 u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset)
 11 {
 12         u32 v;
 13         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 14         v = inl(0xcfc);
 15         return v;
 16 }
 17 
 18 u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)
 19 {
 20         u8 v;
 21         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 22         v = inb(0xcfc + (offset&3));
 23         return v;
 24 }
 25 
 26 u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)
 27 {
 28         u16 v;
 29         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 30         v = inw(0xcfc + (offset&2));
 31         return v;
 32 }
 33 
 34 void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset,
 35                                     u32 val)
 36 {
 37         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 38         outl(val, 0xcfc);
 39 }
 40 
 41 void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
 42 {
 43         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 44         outb(val, 0xcfc + (offset&3));
 45 }
 46 
 47 void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val)
 48 {
 49         outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 50         outw(val, 0xcfc + (offset&2));
 51 }
 52 
 53 int early_pci_allowed(void)
 54 {
 55         return (pci_probe & (PCI_PROBE_CONF1|PCI_PROBE_NOEARLY)) ==
 56                         PCI_PROBE_CONF1;
 57 }
 58 
 59 void early_dump_pci_device(u8 bus, u8 slot, u8 func)
 60 {
 61         int i;
 62         int j;
 63         u32 val;
 64 
 65         printk(KERN_INFO "pci 0000:%02x:%02x.%d config space:",
 66                bus, slot, func);
 67 
 68         for (i = 0; i < 256; i += 4) {
 69                 if (!(i & 0x0f))
 70                         printk("\n  %02x:",i);
 71 
 72                 val = read_pci_config(bus, slot, func, i);
 73                 for (j = 0; j < 4; j++) {
 74                         printk(" %02x", val & 0xff);
 75                         val >>= 8;
 76                 }
 77         }
 78         printk("\n");
 79 }
 80 
 81 void early_dump_pci_devices(void)
 82 {
 83         unsigned bus, slot, func;
 84 
 85         if (!early_pci_allowed())
 86                 return;
 87 
 88         for (bus = 0; bus < 256; bus++) {
 89                 for (slot = 0; slot < 32; slot++) {
 90                         for (func = 0; func < 8; func++) {
 91                                 u32 class;
 92                                 u8 type;
 93 
 94                                 class = read_pci_config(bus, slot, func,
 95                                                         PCI_CLASS_REVISION);
 96                                 if (class == 0xffffffff)
 97                                         continue;
 98 
 99                                 early_dump_pci_device(bus, slot, func);
100 
101                                 if (func == 0) {
102                                         type = read_pci_config_byte(bus, slot,
103                                                                     func,
104                                                                PCI_HEADER_TYPE);
105                                         if (!(type & 0x80))
106                                                 break;
107                                 }
108                         }
109                 }
110         }
111 }
112 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp