答复: IRQ-Tables once again

YhLu YhLu at tyan.com
Tue Jan 20 15:26:00 CET 2004


Good, it's more readble.

-----邮件原件-----
发件人: Stefan Reinauer [mailto:stepan at suse.de] 
发送时间: 2004年1月20日 4:58
收件人: linuxbios at clustermatic.org
主题: IRQ-Tables once again

Hi,

I'm trying to factor the IRQ Table generation a bit, since the
current way to write an IRQ Table plain sucks. This means

* gather all information before actually generating the table
* gather information in a readable and adjustable way.

I juggled with the Arima Hdama irq table, since this one seems to 
work. (See attachment)

Currently I have a couple of defines that are hardcoded into the file.
This should maybe be moved to the motherboard configuration files. 
(At least I would move them and the IRQ_SLOT_COUNT together)

#define IRQ_ROUTER_BUS          1
#define IRQ_ROUTER_DEVFN        PCI_DEVFN(4,3)
#define IRQ_ROUTER_VENDOR       0x1022
#define IRQ_ROUTER_DEVICE       0x746b
#define AVAILABLE_IRQS          0xdef8

Then I substituted the longish irq table entries with a macro
IRQ_SLOT which takes the following arguments:
 * slot number
 * bus,dev,fn
 * 4* irq link line id

Example:
/* PCI Slot 1 */
IRQ_SLOT (1, 3,1,0, 2,3,4,1 ),
/* Let Linux know about bus 1 */
IRQ_SLOT (0, 1,4,3, 0,0,0,0 ),

If there are no objections, I am going to make this change in the code.
Who else is having IRQ Table trouble here?

  Stefan

-- 
     Stefan Reinauer, SUSE LINUX AG
Teamleader Architecture Development



More information about the coreboot mailing list