Date: Thu, 03 Aug 2006 10:47:57 +0300 From: Yousef Raffah <yraffah@savola.com> To: freebsd-mobile@freebsd.org Subject: Re: Interrupt Storms on irq:11 with Tecra A4 Message-ID: <44D1AA2D.5000901@savola.com> In-Reply-To: <200608021028.09765.jhb@freebsd.org> References: <1152019643.704.42.camel@redevil.savola.com> <1152358151.679.27.camel@redevil.savola.com> <44D03E9F.1040409@savola.com> <200608021028.09765.jhb@freebsd.org>
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John Baldwin wrote:
> On Wednesday 02 August 2006 01:56, Yousef Raffah wrote:
>
>> Updating to (7.0-CURRENT #1: Mon Jul 17 20:06:47 AST 2006) has a working
>> acpi on my laptop but the interrupt storm is still there. I have included
>> below a verbose dmesg with acpi enabled as per your request. I would really
>> appreciate any help you can offer :)
>>
>> pci_link6: Links after initial probe:
>> Index� IRQ� Rtd� Ref� IRQs
>> ��� 0�� 11�� N���� 0� 6
>> pci_link6: Links after initial validation:
>> Index� IRQ� Rtd� Ref� IRQs
>> ��� 0� 255�� N���� 0� 6
>> pci_link6: Links after disable:
>> Index� IRQ� Rtd� Ref� IRQs
>> ��� 0� 255�� N���� 0� 6
>> pci_link7: Links after initial probe:
>> Index� IRQ� Rtd� Ref� IRQs
>> ��� 0�� 11�� N���� 0� 5 10
>> pci_link7: Links after initial validation:
>> Index� IRQ� Rtd� Ref� IRQs
>> ��� 0� 255�� N���� 0� 5 10
>> pci_link7: Links after disable:
>> Index� IRQ� Rtd� Ref� IRQs
>> ��� 0� 255�� N���� 0� 5 10
>>
>
> Well, these two appear to be your problem due to your BIOS having buggy ASL.
> You can work around it, but you'll need to figure out the names of your link
> devices first. 'devinfo -v' with ACPI enabled can help with that. For
> example, on my laptop:
>
> % devinfo -v | grep 'pci_link[67]'
> pci_link6 pnpinfo _HID=PNP0C0F _UID=106 at handle=\_SB_.C002.C0F2
> pci_link7 pnpinfo _HID=PNP0C0F _UID=107 at handle=\_SB_.C002.C0F3
>
>
Here is my devinfo
devinfo -v | grep 'pci_link[67]'
pci_link6 pnpinfo _HID=PNP0C0F _UID=7 at handle=\_SB_.PCI0.LPCB.LNKG
pci_link7 pnpinfo _HID=PNP0C0F _UID=8 at handle=\_SB_.PCI0.LPCB.LNKH
So I can see that pci_link6 is named LNKG and pci_link7 is LNKH
> pci_link6 is called C0F2, and pci_link7 is called C0F3. You'll use these
> names to override the IRQ for the link device by setting the following
> variables in the loader:
>
> hw.pci.link.C0F2.irq=11
> hw.pci.link.C0F3.irq=11
>
> (You'll have to replace C0F2 and C0F3 with the names for your link devices.
> Probably LNKF and LNKG.)
>
>
Based on that, I should have the following in my /boot/loader.conf?
hw.pci.link.LNKG.irq=11
hw.pci.link.LNKH.irq=11
> You might also need this patch (but try the tunables above without the patch
> first to be sure):
>
> Index: dev/acpica/acpi_pci_link.c
> ===================================================================
> RCS file: /usr/cvs/src/sys/dev/acpica/acpi_pci_link.c,v
> retrieving revision 1.53
> diff -u -r1.53 acpi_pci_link.c
> --- dev/acpica/acpi_pci_link.c 6 Jan 2006 16:14:32 -0000 1.53
> +++ dev/acpica/acpi_pci_link.c 2 Aug 2006 14:27:09 -0000
> @@ -941,18 +941,16 @@
> KASSERT(!PCI_INTERRUPT_VALID(link->l_irq),
> ("%s: link already has an IRQ", __func__));
>
> - /* Check for a tunable override and use it if it is valid. */
> + /* Check for a tunable override. */
> if (ACPI_SUCCESS(acpi_short_name(acpi_get_handle(dev), link_name,
> sizeof(link_name)))) {
> snprintf(tunable_buffer, sizeof(tunable_buffer),
> "hw.pci.link.%s.%d.irq", link_name, link->l_res_index);
> - if (getenv_int(tunable_buffer, &i) &&
> - PCI_INTERRUPT_VALID(i) && link_valid_irq(link, i))
> + if (getenv_int(tunable_buffer, &i) && PCI_INTERRUPT_VALID(i))
> return (i);
> snprintf(tunable_buffer, sizeof(tunable_buffer),
> "hw.pci.link.%s.irq", link_name);
> - if (getenv_int(tunable_buffer, &i) &&
> - PCI_INTERRUPT_VALID(i) && link_valid_irq(link, i))
> + if (getenv_int(tunable_buffer, &i) && PCI_INTERRUPT_VALID(i))
> return (i);
> }
>
>
>
Let us try the loader file first and see if we need the patch after that.
Thank you so much for looking in to this :)
--
Sincerely,
Yousef Adnan Raffah
The Savola Group
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