From 6a25f5e35ab742380742ebf2033f6d53518219db Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 7 May 2015 09:52:21 -0500 Subject: PCI/MSI: Export pci_msi_set_enable(), pci_msix_clear_and_set_ctrl() Move pci_msi_set_enable() and pci_msix_clear_and_set_ctrl() to drivers/pci/pci.h so they're available even when MSI isn't configured into the kernel. No functional change. [bhelgaas: changelog, split into separate patch] Signed-off-by: Michael S. Tsirkin Signed-off-by: Bjorn Helgaas Reviewed-by: Fam Zheng --- drivers/pci/pci.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/pci/pci.h') diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 9bd762c237ab..6f04d1ea2bcb 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -146,6 +146,27 @@ static inline void pci_no_msi(void) { } static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { } #endif +static inline void pci_msi_set_enable(struct pci_dev *dev, int enable) +{ + u16 control; + + pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control); + control &= ~PCI_MSI_FLAGS_ENABLE; + if (enable) + control |= PCI_MSI_FLAGS_ENABLE; + pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control); +} + +static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set) +{ + u16 ctrl; + + pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl); + ctrl &= ~clear; + ctrl |= set; + pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl); +} + void pci_realloc_get_opt(char *); static inline int pci_no_d1d2(struct pci_dev *dev) -- cgit