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| author | Bin Meng <bmeng.cn@gmail.com> | 2015-07-15 08:23:40 (GMT) |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-28 16:36:22 (GMT) |
| commit | 31a2dc69553136b01b51de23dd190c0f7b36de2a (patch) | |
| tree | 26a8d8135614e91f2ddebeb776b3765fc0798418 /arch/x86/cpu/pci.c | |
| parent | 93f8a31186c9ff65aaf0dcf5410976df5d269c46 (diff) | |
| download | u-boot-fsl-qoriq-31a2dc69553136b01b51de23dd190c0f7b36de2a.tar.xz | |
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>
Diffstat (limited to 'arch/x86/cpu/pci.c')
| -rw-r--r-- | arch/x86/cpu/pci.c | 27 |
1 files changed, 17 insertions, 10 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); + } } |