usb/74989: (regression) Lost USB support between 5.2.1-RELEASE and 5.3-RELEASE on K7T266 Pro2.

[John Baldwin]

On Friday 15 April 2005 09:31 am, Julien Gabel wrote:
> >> I made some progress here. After playing with BIOS settings, i am now
> >> able to:
> >>  - Boot with ACPI enable (shutdown -p works as expected now);
> >>  - Use USB devices.
> >>
> >> In order to do that, i had to totally disable "APIC Function" in the
> >> BIOS. With "APIC Function" enabled, neither version 1.4 nor 1.1 of the
> >> "MPS Table Version" settings solved my problem.
> >>
> >> So, although i need to disable "APIC Function", all seems to works
> >> correctly together: ACPI support and USB support. As a side note, i
> >> did not encountered anymore the interrupt storm on the uhci USB host
> >> controller driver.
> >>
> >> Maybe can someone explain me what may be wrong with "APIC Function",
> >> and if there is some drawbacks to disable it (or what is the purpose
> >> of this setting)?
> >
> > APIC is used to route interrupts differently.  You can also disable it
> > from the loader with 'hint.apic.0.disabled=1'.  I've looked at your
> > dmesg's, and the problem is that in the ACPI case the IRQ 10 that your
> > USB controllers are using is configured as an ISA IRQ (edge/high).  For
> > now you can either disable APIC or ACPI as a workaround until I figure
> > out a better solution.
>
> Thanks.  I effectively prefer turn APIC off via the loader configuration
> than from the BIOS settings, i think it is far more easily to remember
> what i have done from this place.
>
> I can try patch(es) or make test(s) without problem on this machine, if
> any.  Thanks a lot.

Actually, can you try this patch:

Index: acpi_pci_link.c
===================================================================
RCS file: /host/cvs/usr/cvs/src/sys/dev/acpica/acpi_pci_link.c,v
retrieving revision 1.48
diff -u -r1.48 acpi_pci_link.c
--- acpi_pci_link.c	1 Nov 2005 22:44:07 -0000	1.48
+++ acpi_pci_link.c	28 Nov 2005 13:03:29 -0000
@@ -859,7 +859,18 @@
 			if (!link->l_routed &&
 			    PCI_INTERRUPT_VALID(link->l_irq)) {
 				link->l_routed = TRUE;
+				/*
+				 * Some BIOSen are broken and actually set
+				 * some interrupts to active-high with level
+				 * trigger.  Workaround this by hard-coding
+				 * active-low and level-trigger.
+				 */
+#if 0
 				acpi_config_intr(dev, resource);
+#else
+    				BUS_CONFIG_INTR(dev, link->l_irq,
+				    INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
+#endif
 				pci_link_interrupt_weights[link->l_irq] +=
 				    link->l_references;
 			}


-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org