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| author | Bin Meng <bmeng.cn@gmail.com> | 2015-07-15 16:23:40 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-28 10:36:22 -0600 |
| commit | 31a2dc69553136b01b51de23dd190c0f7b36de2a (patch) | |
| tree | 26a8d8135614e91f2ddebeb776b3765fc0798418 | |
| parent | 93f8a31186c9ff65aaf0dcf5410976df5d269c46 (diff) | |
| download | u-boot-imx-31a2dc69553136b01b51de23dd190c0f7b36de2a.zip u-boot-imx-31a2dc69553136b01b51de23dd190c0f7b36de2a.tar.gz u-boot-imx-31a2dc69553136b01b51de23dd190c0f7b36de2a.tar.bz2 | |
x86: pci: Assign pci irqs to all functions
We need walk through all functions within a PCI device and assign
their IRQs accordingly.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | arch/x86/cpu/pci.c | 27 | ||||
| -rw-r--r-- | arch/x86/include/asm/pci.h | 3 | ||||
| -rw-r--r-- | arch/x86/lib/pirq_routing.c | 3 |
3 files changed, 19 insertions, 14 deletions
diff --git a/arch/x86/cpu/pci.c b/arch/x86/cpu/pci.c index c209f15..fdfd5f7 100644 --- a/arch/x86/cpu/pci.c +++ b/arch/x86/cpu/pci.c @@ -152,23 +152,30 @@ int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset, return 0; } -void pci_assign_irqs(int bus, int device, int func, u8 irq[4]) +void pci_assign_irqs(int bus, int device, u8 irq[4]) { pci_dev_t bdf; + int func; + u16 vendor; u8 pin, line; - bdf = PCI_BDF(bus, device, func); + for (func = 0; func < 8; func++) { + bdf = PCI_BDF(bus, device, func); + vendor = x86_pci_read_config16(bdf, PCI_VENDOR_ID); + if (vendor == 0xffff || vendor == 0x0000) + continue; - pin = x86_pci_read_config8(bdf, PCI_INTERRUPT_PIN); + pin = x86_pci_read_config8(bdf, PCI_INTERRUPT_PIN); - /* PCI spec says all values except 1..4 are reserved */ - if ((pin < 1) || (pin > 4)) - return; + /* PCI spec says all values except 1..4 are reserved */ + if ((pin < 1) || (pin > 4)) + continue; - line = irq[pin - 1]; + line = irq[pin - 1]; - debug("Assigning IRQ %d to PCI device %d.%x.%d (INT%c)\n", - line, bus, device, func, 'A' + pin - 1); + debug("Assigning IRQ %d to PCI device %d.%x.%d (INT%c)\n", + line, bus, device, func, 'A' + pin - 1); - x86_pci_write_config8(bdf, PCI_INTERRUPT_LINE, line); + x86_pci_write_config8(bdf, PCI_INTERRUPT_LINE, line); + } } diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 56eaa25..f7e968e 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -72,11 +72,10 @@ int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset, * * @bus: PCI bus number * @device: PCI device number - * @func: PCI function number * @irq: An array of IRQ numbers that are assigned to INTA through * INTD of this PCI device. */ -void pci_assign_irqs(int bus, int device, int func, u8 irq[4]); +void pci_assign_irqs(int bus, int device, u8 irq[4]); #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/lib/pirq_routing.c b/arch/x86/lib/pirq_routing.c index 7a34dcf..ba41169 100644 --- a/arch/x86/lib/pirq_routing.c +++ b/arch/x86/lib/pirq_routing.c @@ -98,8 +98,7 @@ void pirq_route_irqs(struct irq_info *irq, int num) } /* Bus, device, slots IRQs for {A,B,C,D} */ - pci_assign_irqs(irq->bus, irq->devfn >> 3, irq->devfn & 7, - irq_slot); + pci_assign_irqs(irq->bus, irq->devfn >> 3, irq_slot); irq++; } |