From 4ee11c1a9f7cc20026bb66ac624533310a605312 Mon Sep 17 00:00:00 2001 From: Suresh Warrier Date: Fri, 19 Aug 2016 15:35:49 +1000 Subject: powerpc/powernv: Provide facilities for EOI, usable from real mode This adds a new function pnv_opal_pci_msi_eoi() which does the part of end-of-interrupt (EOI) handling of an MSI which involves doing an OPAL call. This function can be called in real mode. This doesn't just export pnv_ioda2_msi_eoi() because that does a call to icp_native_eoi(), which does not work in real mode. This also adds a function, is_pnv_opal_msi(), which KVM can call to check whether an interrupt is one for which we should be calling pnv_opal_pci_msi_eoi() when we need to do an EOI. [paulus@ozlabs.org - split out the addition of pnv_opal_pci_msi_eoi() from Suresh's patch "KVM: PPC: Book3S HV: Handle passthrough interrupts in guest"; added is_pnv_opal_msi(); wrote description.] Signed-off-by: Suresh Warrier Signed-off-by: Paul Mackerras --- arch/powerpc/include/asm/pnv-pci.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/powerpc/include/asm/pnv-pci.h') diff --git a/arch/powerpc/include/asm/pnv-pci.h b/arch/powerpc/include/asm/pnv-pci.h index 0cbd8134ce81..1b46b52d3212 100644 --- a/arch/powerpc/include/asm/pnv-pci.h +++ b/arch/powerpc/include/asm/pnv-pci.h @@ -12,6 +12,7 @@ #include #include +#include #include #include @@ -33,6 +34,8 @@ int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num); void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num); int pnv_cxl_get_irq_count(struct pci_dev *dev); struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev); +int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq); +bool is_pnv_opal_msi(struct irq_chip *chip); #ifdef CONFIG_CXL_BASE int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, -- cgit v1.2.3