From c93fd5266cff2afa908659c817c6aff4d5ed6283 Mon Sep 17 00:00:00 2001 From: "Ahmed S. Darwish" Date: Fri, 11 Nov 2022 14:54:43 +0100 Subject: PCI/MSI: Move mask and unmask helpers to msi.h The upcoming support for per device MSI interrupt domains needs to share some of the inline helpers with the MSI implementation. Move them to the header file. Signed-off-by: Ahmed S. Darwish Signed-off-by: Thomas Gleixner Reviewed-by: Jason Gunthorpe Acked-by: Bjorn Helgaas Link: https://lore.kernel.org/r/20221111122014.640052354@linutronix.de --- drivers/pci/msi/msi.c | 61 +-------------------------------------------------- 1 file changed, 1 insertion(+), 60 deletions(-) (limited to 'drivers/pci/msi/msi.c') diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c index 160af9f01669..5c310df55d0d 100644 --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -16,7 +16,7 @@ static int pci_msi_enable = 1; int pci_msi_ignore_mask; -static noinline void pci_msi_update_mask(struct msi_desc *desc, u32 clear, u32 set) +void pci_msi_update_mask(struct msi_desc *desc, u32 clear, u32 set) { raw_spinlock_t *lock = &to_pci_dev(desc->dev)->msi_lock; unsigned long flags; @@ -32,65 +32,6 @@ static noinline void pci_msi_update_mask(struct msi_desc *desc, u32 clear, u32 s raw_spin_unlock_irqrestore(lock, flags); } -static inline void pci_msi_mask(struct msi_desc *desc, u32 mask) -{ - pci_msi_update_mask(desc, 0, mask); -} - -static inline void pci_msi_unmask(struct msi_desc *desc, u32 mask) -{ - pci_msi_update_mask(desc, mask, 0); -} - -static inline void __iomem *pci_msix_desc_addr(struct msi_desc *desc) -{ - return desc->pci.mask_base + desc->msi_index * PCI_MSIX_ENTRY_SIZE; -} - -/* - * This internal function does not flush PCI writes to the device. All - * users must ensure that they read from the device before either assuming - * that the device state is up to date, or returning out of this file. - * It does not affect the msi_desc::msix_ctrl cache either. Use with care! - */ -static void pci_msix_write_vector_ctrl(struct msi_desc *desc, u32 ctrl) -{ - void __iomem *desc_addr = pci_msix_desc_addr(desc); - - if (desc->pci.msi_attrib.can_mask) - writel(ctrl, desc_addr + PCI_MSIX_ENTRY_VECTOR_CTRL); -} - -static inline void pci_msix_mask(struct msi_desc *desc) -{ - desc->pci.msix_ctrl |= PCI_MSIX_ENTRY_CTRL_MASKBIT; - pci_msix_write_vector_ctrl(desc, desc->pci.msix_ctrl); - /* Flush write to device */ - readl(desc->pci.mask_base); -} - -static inline void pci_msix_unmask(struct msi_desc *desc) -{ - desc->pci.msix_ctrl &= ~PCI_MSIX_ENTRY_CTRL_MASKBIT; - pci_msix_write_vector_ctrl(desc, desc->pci.msix_ctrl); -} - -static void __pci_msi_mask_desc(struct msi_desc *desc, u32 mask) -{ - if (desc->pci.msi_attrib.is_msix) - pci_msix_mask(desc); - else - pci_msi_mask(desc, mask); -} - -static void __pci_msi_unmask_desc(struct msi_desc *desc, u32 mask) -{ - if (desc->pci.msi_attrib.is_msix) - pci_msix_unmask(desc); - else - pci_msi_unmask(desc, mask); -} - /** * pci_msi_mask_irq - Generic IRQ chip callback to mask PCI/MSI interrupts * @data: pointer to irqdata associated to that interrupt -- cgit