PCI Interrupt

Hi,

Our custom board is designed with a mpc8270. U-Boot is running on it.
The pci-bridge on the 8270 seems to be initialized. The pci command works and shows me the bridge. On the pci-bus is a pci target connect. Its interrupt is routed to IRQ2.
How i can tell U-Boot that my pci interrupt is IRQ2 ??

Thanks in advance

Marco Schramel

---------
Marco Schramel
R&D
Bartec GmbH
Schulstr. 30
94239 Gotteszell, Germany
www.bartec.de
Marco.Schramel at go.bartec.de
Phone:  +49 (0)9929/301332
Fax:    +49 (0)9929/301112

What for? U-Boot does not use interrupts.

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
At the source of every error which is blamed on the computer you will
find at least two human errors, including the error of blaming it  on
the computer.

Are refering to the interrupt value displayed by the scan done by pci_hose_scan_bus() in drivers/pci.c? If not, ignore this message :)

If so, it's probably only relevant if the OS booted doesn't configure the PCI devices. I've booted Linux without sane values, as I modded it to do the config for my board.

If it bugs you in u-boot ...

Initialize the PCI device's PCI_INTERRUPT_LINE config register. I do this through a board specific pci_fixup_irq() routine that is registered with the hose.

I'm using a custom 440GX board, but your's may be similar. Here's an excerpt from the board specific init file (not saying it's "right" just that it seems to work):

/* Called if CFG_PCI_PRE_INIT defined in board config */ int pci_pre_init(struct pci_controller *hose)

{
         /* Install the configuration call-back table */
         hose->config_table = custom_config_table;

         /* Install interrupt map */
         hose->fixup_irq = pci_fixup_irq;

	return 1;
}

static void pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)

{
         u16 vendor_id, device_id;

         pci_hose_read_config_word(hose, dev, PCI_VENDOR_ID, &vendor_id);
         pci_hose_read_config_word(hose, dev, PCI_DEVICE_ID, &device_id);

         if (vendor_id == PCI_VENDOR_ID_XILINX) {
                 if (device_id == PCI_DEVICE_ID_XILINX_V2PRO) {
                         /* Xilinx V2Pro - IRQ29 */
                         pci_hose_write_config_byte(hose, dev,
                                 PCI_INTERRUPT_LINE, 29);
                         return;
                 }
	}
}

--
Andrew E. Mileski