From owner-freebsd-mobile  Sat Apr  7 17: 5:20 2001
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Date: Sun, 08 Apr 2001 02:05:10 +0200
From: "Jose Luis Arbona Orovay" <jarbo@infocentre.gva.es>
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Subject: pccbb device
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I'm trying to enable the cardbus extensión in my IBM Thinkpad 760ED
(P166/64MB). I've compiled the kernel using the NEWCARD file include in
the current-release (with some additions from me, of course, but
basically the same).

When the system boots it gives me the next output:

...
pccbb0: <TI1130 PCI-CardBus Bridge> mem 0x10812000-0x10812fff at device
2.0 on pci0
pci_cfgintr: can't route an interrupt to 0:2 INTA
pccbb: Unable to map IRQ...
device_probe_and_attach: pccbb0 attach returned 12
pccbb0: <TI1130 PCI-CardBus Bridge> mem 0x10811000-0x10811fff at device
2.1 on pci0
pci_cfgintr: can't route an interrupt to 0:2 INTB
pccbb: Unable to map IRQ...
device_probe_and_attach: pccbb0 attach returned 12
...

Looking at the code, that the call to the function pci_cfgintr fails
because in the initialisation of the route_table, the function
bios_sigsearch doesn't find the $PIR signature in the bios, and then
pci_route_count is equal to 0 and pci_route_table is empty.

    if ((pt == NULL) && ((sigaddr = bios_sigsearch(0, "$PIR", 4, 16, 0))
!= 0)) {
       pt = (struct PIR_table *)(uintptr_t)BIOS_PADDRTOVADDR(sigaddr);
      for (cv = (u_int8_t *)pt, ck = 0, i = 0; i <
(pt->pt_header.ph_length); i++) {
         ck += cv[i];
     }
     if (ck == 0) {
         pci_route_table = pt;
         pci_route_count = (pt->pt_header.ph_length - sizeof(struct
PIR_header)) / sizeof(struct PIR_entry);
         printf("Using $PIR table, %d entries at %p\n", pci_route_count,
pci_route_table);
     }
    }

What's the $PIR bios resource and why doesn't the kernel find it ?

Thanks in advance.
Jose Luis

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