Messages in this thread | | | From | Daniel Ritz <> | Subject | Re: [PATCH] yenta: irq-routing for TI bridges | Date | Tue, 24 Feb 2004 16:23:11 +0100 |
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[removing akpm from cc as it is pcmcia centric]
On Tuesday 24 February 2004 13:40, Russell King wrote: > On Tue, Feb 24, 2004 at 12:59:50PM +0100, Daniel Ritz wrote: > > there's another bug btw. one that is probably never hit and harmless too: > > rmk's notbook has parellel isa interrupts, INTA is _not_ routed. > > Not true. It has parallel ISA interrupts _and_ parallel PCI interrupts. > It's a TI 1250. Unfortunately, the 1250 data sheet isn't available, > however there seems to be some consistency in the device codes to > features offered.
ok, i see the 1250, 1450 are different. the 1410/1520 doc says nothing about it. did i miss something about the 1410/1520/etc ?
> > The 1450 and 1251A (both of which seem similar to 1250) has separate pins > for PCI parallel interrupts which are outside the control of the "IRQMUX" > register. When these pins are not used for parallel PCI interrupts, > they function as "GPIO3" and "IRQSER" (for PCI serial interrupts) > respectively. The function of these pins is controlled by the device > control register. > > Please note that "IRQMUX" is a misleading definition of the register in > question. The register programs various multifunction pins on the device > which _may_ be IRQ outputs, LED outputs, ZV switching outputs, audio, or > even GPIO.
TI calls it Multifunction Routing Register for a reason :)
so i think the safe way would be: - move routing code to 12xx_override() - first test interrupts, do nothing if working correct - try to reflect the settings in device control register, test again - fall back to pci if nothing works - handle the 125x/1450 by not touching MFUNC0 - don't do INTB routing, set INTRTIE instead (on 2 slot chips) (- remove the bad code from 2.4 and do the same)
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