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libpci initial stuff

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phcoder 2009-10-14 10:11:59 +02:00
parent bf7f7a18f4
commit 3affd0ece8
11 changed files with 147 additions and 37 deletions
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23
bus/pci.c
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@ -21,41 +21,40 @@
#include <grub/pci.h>
grub_pci_address_t
grub_pci_make_address (int bus, int device, int function, int reg)
grub_pci_make_address (grub_pci_device_t dev, int reg)
{
return (1 << 31) | (bus << 16) | (device << 11) | (function << 8) | (reg << 2);
return (1 << 31) | (dev.bus << 16) | (dev.device << 11)
| (dev.function << 8) | (reg << 2);
}
void
grub_pci_iterate (grub_pci_iteratefunc_t hook)
{
int bus;
int dev;
int func;
grub_pci_device_t dev;
grub_pci_address_t addr;
grub_pci_id_t id;
grub_uint32_t hdr;
for (bus = 0; bus < 256; bus++)
for (dev.bus = 0; dev.bus < 256; dev.bus++)
{
for (dev = 0; dev < 32; dev++)
for (dev.device = 0; dev.device < 32; dev.device++)
{
for (func = 0; func < 8; func++)
for (dev.function = 0; dev.function < 8; dev.function++)
{
addr = grub_pci_make_address (bus, dev, func, 0);
addr = grub_pci_make_address (dev, 0);
id = grub_pci_read (addr);
/* Check if there is a device present. */
if (id >> 16 == 0xFFFF)
continue;
if (hook (bus, dev, func, id))
if (hook (dev, id))
return;
/* Probe only func = 0 if the device if not multifunction */
if (func == 0)
if (dev.function == 0)
{
addr = grub_pci_make_address (bus, dev, func, 3);
addr = grub_pci_make_address (dev, 3);
hdr = grub_pci_read (addr);
if (!(hdr & 0x800000))
break;