getpir utility for creation of irq tables.c doubt ?

Hi,

My lspci O/P is as below, which seems to have 6 slots, 4 on bus 0 and
2 on bus 1. I hope this interpretation is correct.

****lspci O/P*****
00:00.0 Host bridge: Intel Corporation 82810E GMCH [Graphics Memory Controller Hub] (rev
03)
00:01.0 VGA compatible controller: Intel Corporation 82810E CGC [Chipset Graphics
Controller] (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801AA 82810 PCI Bridge (rev 02)
00:1f.0 ISA bridge: Intel Corporation 82801AA 82810 Chipset ISA Bridge (LPC) (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801AA 82810 Chipset IDE (rev 02)
00:1f.2 USB Controller: Intel Corporation 82801AA 82810 Chipset USB (rev 02)
00:1f.3 SMBus: Intel Corporation 82801AA 82810 Chipset SMBus (rev 02)
01:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
01:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
****lspci O/P*****

And the irq_tables.c O/P after getpir is as below :

****getpir O/P*****
/* 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*4,        /* there can be total 4 devices on the bus */
        0,           /* Where the interrupt router lies (bus) */
        0xf8,           /* Where the interrupt router lies (dev) */
        0x1c00,         /* IRQs devoted exclusively to PCI usage */
        0x8086,         /* Vendor */
        0x7000,         /* Device */
        0,         /* Crap (miniport) */
        { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */
        0xa9,         /*  u8 checksum , this hase to set to some value that would give 0
after the sum of all bytes for this structure (including checksum) */
        {
                {0,0x80, {{0x61, 0xdeb8}, {0x62, 0xdeb8}, {0x63, 0xdeb8}, {0x60, 0xdeb8}},
0x2, 0},
                {0,0x8, {{0x60, 0xdeb8}, {0x61, 0xdeb8}, {0x62, 0xdeb8}, {0x63, 0xdeb8}},
0, 0},
                {0,0xf9, {{0x60, 0xdeb8}, {0x61, 0xdeb8}, {0x62, 0xdeb8}, {0x63, 0xdeb8}},
0, 0},
                {0x40,0, {{0, 0}, {0, 0}, {0, 0}, {0, 0}}, 0, 0},
        }
};

****getpir O/P*****

It does not seem to list the details of the bus 1 for ethernet controller.
Any suggestions.

Regards
Deepak

[ron minnich]

getpir just reads the $PIR table in memory as set by the bios. 

I am wondering if the bios on your board is one of the defective BIOSes 
that doesn't have the $PIR entries for all devices. There are many of 
these. If so, you are going to have to hand-edit that .c file and add the 
entries yourself. 

in the case of defective $PIR tables what the BIOS writers do is just set 
the IRQ line by hand in the pci device.

ron

[Andrew Ip]

  getpir just reads the $PIR table in memory as set by
the bios. 
 I am wondering if the bios on your board is one of the defective BIOSes 
 that doesn't have the $PIR entries for all devices. There are many of 
 these. If so, you are going to have to hand-edit that .c file and add the 
 entries yourself. 
 in the case of defective $PIR tables what the BIOS writers do is just set 
 the IRQ line by hand in the pci device.
Sometimes you can just trust the value from
stock PIRQ table.  Some
boards come with faulty table.

-Andrew
-- 
Andrew Ip
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[ron minnich]

On Tue, 20 May 2003, Andrew Ip wrote:

  Sometimes you can just trust the value from stock PIRQ
table.  Some
 boards come with faulty table.
yes. Deepak, are the two ethernet devices built into the motherboard?

ron

[Deepak Kotian]

Yes, there are 2 of them built into it.
One more question, if we the HAVE_PIRQ option is enabled, I 
have seen some kernel patches to be applied in this case. Could someone
explain the significance of it.

Regards
Deepak

----- Original Message ----- 
From: "ron minnich" <rminnich(a)lanl.gov>
To: "Andrew Ip" <aip(a)cwlinux.com>
Cc: <dkotian3(a)vsnl.net>et>; <linuxbios(a)clustermatic.org>
Sent: Tuesday, May 20, 2003 6:45 PM
Subject: Re: getpir utility for creation of irq tables.c doubt ?


  On Tue, 20 May 2003, Andrew Ip wrote:
 
  Sometimes you can just trust the value from stock
PIRQ table.  Some
 boards come with faulty table.
 
 yes. Deepak, are the two ethernet devices built into the motherboard?
 
 ron

[ron minnich]

On Tue, 20 May 2003, Deepak Kotian wrote:

  Yes, there are 2 of them built into it.
ok, here's an option. In the mainboard.c file, just the the IRQ line 
register to the correct value.

ron