Quoting Marc Jones <[EMAIL PROTECTED]>:
[EMAIL PROTECTED] wrote:
Ok I am a little confused on how to tell what devices are what in
irc_tablec.c
How do I tell?? Also where does the value for the "bitmap" come from?
Thanks for your help - Joe
/* bus, dev|fn,
{0x01,(0x08<<3)|0x0,
{0x00,(0x1f<<3)|0x0,
{0x00,(0x1d<<3)|0x0,
{0x00,(0x00<<3)|0x0,
{0x00,(0x01<<3)|0x0,
{0x01,(0x00<<3)|0x0,
{0x01,(0x01<<3)|0x0,
{0x01,(0x02<<3)|0x0,
{0x01,(0x09<<3)|0x0,
{0x01,(0x06<<3)|0x0,
{0x01,(0x07<<3)|0x0,
{0x00,(0x02<<3)|0x0,
Joe,
There is some good information here:
http://linuxbios.org/index.php/Creating_Valid_IRQ_Tables
http://www.microsoft.com/whdc/archive/pciirq.mspx
Your bus/dv/fun should match the devices found when you do an lspci.
The value for the bitmap is what IRQs are available on that INT#.
Theses are typically 10 and/or 11 but could be any shareable IRQ.
Marc
0xDDDDFFFF, LNK, 00, GSI
DDDD is PCI DEV, FFFF is function, LNK is PCI link - so LNKA B etc...
Next parameter is 00 if you do not support legacy PIC routing at all.
Last parameter is global interrupt NR.
Hope it helps,
Rudolf
Thanks for your help Marc and Rudolf. I have been looking through most
of the other irq_tables.c from different mainboards and it seems like
on most of them the "fn" is 0x0 (like above). Is this a bug in
getpir?? So do I need to manually change these to the correct functions?
I understand where the "link" comes from. These are set in the LPC
Bridge registers, but where does the value for the "bitmap" come from?
Mine eithor say 0xded8 or 0x0000?? The 0x0000 means it is not routed
right? But I don't get where the 0xded8 comes from?
I just attached my irq_tables.c created from getpir so you can see
what I mean.
Thanks - Joe
/* This file was generated by getpir.c, do not modify!
(but if you do, please run checkpir on it to verify)
Contains the IRQ Routing Table dumped directly from your memory , wich BIOS
sets up
Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM
*/
#include <arch/pirq_routing.h>
const struct irq_routing_table intel_irq_routing_table = {
PIRQ_SIGNATURE, /* u32 signature */
PIRQ_VERSION, /* u16 version */
32+16*7, /* there can be total 7 devices on the bus */
0x00, /* Where the interrupt router lies (bus) */
(0x1f<<3)|0x0, /* Where the interrupt router lies (dev) */
0xdef8, /* IRQs devoted exclusively to PCI usage */
0x8086, /* Vendor */
0x24c0, /* Device */
0, /* Crap (miniport) */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
0xcd, /* u8 checksum , this hase to set to some value that
would give 0 after the sum of all bytes for this structure (including checksum)
*/
{
/* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link,
bitmap}, {link, bitmap}, slot, rfu */
{0x00,(0x02<<3)|0x0, {{0x60, 0xded8}, {0x00, 0x0000}, {0x00,
0x0000}, {0x00, 0x00000}}, 0x0, 0x0},
{0x00,(0x1d<<3)|0x0, {{0x60, 0xded8}, {0x63, 0xded8}, {0x62,
0xded8}, {0x6b, 0x0ded8}}, 0x0, 0x0},
{0x00,(0x1f<<3)|0x0, {{0x62, 0xded8}, {0x61, 0xded8}, {0x6b,
0xded8}, {0x63, 0x0ded8}}, 0x0, 0x0},
{0x01,(0x08<<3)|0x0, {{0x68, 0x0020}, {0x00, 0x0000}, {0x00,
0x0000}, {0x00, 0x00000}}, 0x0, 0x0},
{0x01,(0x00<<3)|0x0, {{0x60, 0xded8}, {0x61, 0xded8}, {0x62,
0xded8}, {0x63, 0x0ded8}}, 0x1, 0x0},
{0x01,(0x01<<3)|0x0, {{0x63, 0xded8}, {0x60, 0xded8}, {0x61,
0xded8}, {0x62, 0x0ded8}}, 0x2, 0x0},
{0x01,(0x02<<3)|0x0, {{0x62, 0xded8}, {0x63, 0xded8}, {0x60,
0xded8}, {0x61, 0x0ded8}}, 0x3, 0x0},
}
};
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