From 2c74424470a0f98df8d6540642aff96d1a0b94b3 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 3 Feb 2014 14:27:33 -0700 Subject: PCI: Add device-specific PCI ACS enable Some devices support PCI ACS-like features, but don't report it using the standard PCIe capabilities. We already provide hooks for device-specific testing of ACS, but not for device-specific enabling of ACS. This provides that setup hook. Signed-off-by: Alex Williamson Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index fb57c892b214..0f76d0f66365 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1510,6 +1510,7 @@ enum pci_fixup_pass { void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); struct pci_dev *pci_get_dma_source(struct pci_dev *dev); int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags); +void pci_dev_specific_enable_acs(struct pci_dev *dev); #else static inline void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) { } @@ -1522,6 +1523,7 @@ static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev, { return -ENOTTY; } +static inline void pci_dev_specific_enable_acs(struct pci_dev *dev) { } #endif void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); -- cgit v1.2.3 From 5757a769ea4e094df6ec92d9ce7d05a90d5bf3e6 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 3 Feb 2014 14:27:39 -0700 Subject: PCI: Add pci_dev_flag for ACS enable quirks Quirks that enable ACS-compatible functionality on a device need some way to track whether a given device has been enabled. Rather than create new data structures for this, allocate one of the pci_dev_flags to indicate this setup. Signed-off-by: Alex Williamson Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 0f76d0f66365..60ab8d782f8c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -170,6 +170,8 @@ enum pci_dev_flags { PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, /* Provide indication device is assigned by a Virtual Machine Manager */ PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4, + /* Flag for quirk use to store if quirk-specific ACS is enabled */ + PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) 8, }; enum pci_irq_reroute_variant { -- cgit v1.2.3