On 29.10.2015 16:01, Sinan Kaya wrote:
On 10/29/2015 7:38 AM, Tomasz Nowicki wrote:
On 28.10.2015 21:36, Sinan Kaya wrote:
1. ACPI code is unable to discover the interrupt numbers when objects
are ordered as follows in the ACPI file
PNP0A08 object
PNP0C0F INTA object
PNP0C0F INTB object
PNP0C0F INTC object
PNP0C0F INTD object
This gives me invalid link context error.
pci 0000:00:00.0: PCI INT A: no GSI
pci 0000:01:00.0: Derived GSI for 0000:01:00.0 INT A from 0000:00:00.0
acpi PNP0C0F:00: Invalid link context
If I order it like this in the ACPI file,
PNP0C0F INTA object
PNP0C0F INTB object
PNP0C0F INTC object
PNP0C0F INTD object
PNP0A08 object
then, the legacy interrupt numbers can be discovered properly.
Can you show full content of your PNP0C0F and PNP0A08 objects?
ACPI table is considered proprietary. I don't think I can get the legal
approval in time. I can give you pieces though.
Here is the _PRT
Device (PCI0) { // PCIe port 0
Name(_HID, EISAID("PNP0A08")) // PCI express
Name(_CID, EISAID("PNP0A03")) // Compatible PCI Root Bridge
{
....
Name(_PRT, Package(){
Package(){0x0FFFF, 0, \_SB.LN0A, 0}, // Slot 0, INTA
Package(){0x0FFFF, 1, \_SB.LN0B, 0}, // Slot 0, INTB
Package(){0x0FFFF, 2, \_SB.LN0C, 0}, // Slot 0, INTC
Package(){0x0FFFF, 3, \_SB.LN0D, 0} // Slot 0, INTD
})
}
Here is the PNP0C0F
Device(LN0A){
Name(_HID, EISAID("PNP0C0F")) // PCI interrupt link
Name(_UID, 1)
Name(_PRS, ResourceTemplate(){
Interrupt(ResourceProducer, Level, ActiveHigh, Exclusive, , ,) {0xE8}
})
Method(_DIS) {}
Method(_CRS) { Return (_PRS) }
Method(_SRS, 1) {}
}
Can you please apply patch below:
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index fec1c91..fe34415 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -48,10 +48,19 @@ resource_size_t pcibios_align_resource(void *data,
const struct resource *res,
*/
int pcibios_enable_device(struct pci_dev *dev, int mask)
{
+ int ret;
+
if (pci_has_flag(PCI_PROBE_ONLY))
return 0;
- return pci_enable_resources(dev, mask);
+ ret = pci_enable_resources(dev, mask);
+ if (ret < 0)
+ return ret;
+#ifdef CONFIG_ACPI
+ if (!dev->msi_enabled)
+ return acpi_pci_irq_enable(dev);
+#endif
+ return 0;
}
/*
@@ -61,10 +70,6 @@ int pcibios_add_device(struct pci_dev *dev)
{
if (acpi_disabled)
dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
-#ifdef CONFIG_ACPI
- else
- acpi_pci_irq_enable(dev);
-#endif
return 0;
}
and let me know if the order still matter?
Regards,
Tomasz
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