From 173ffad79d177d9a91fbf3be6bf67ca81e0f765a Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 10 Dec 2021 23:19:18 +0100 Subject: PCI/MSI: Use msi_desc::msi_index The usage of msi_desc::pci::entry_nr is confusing at best. It's the index into the MSI[X] descriptor table. Use msi_desc::msi_index which is shared between all MSI incarnations instead of having a PCI specific storage for no value. Signed-off-by: Thomas Gleixner Tested-by: Michael Kelley Tested-by: Nishanth Menon Reviewed-by: Greg Kroah-Hartman Reviewed-by: Jason Gunthorpe Acked-by: Bjorn Helgaas Link: https://lore.kernel.org/r/20211210221814.602911509@linutronix.de --- drivers/pci/msi/irqdomain.c | 2 +- drivers/pci/msi/msi.c | 20 ++++++++------------ 2 files changed, 9 insertions(+), 13 deletions(-) (limited to 'drivers/pci/msi') diff --git a/drivers/pci/msi/irqdomain.c b/drivers/pci/msi/irqdomain.c index 26b23a1c4f60..422420276d6f 100644 --- a/drivers/pci/msi/irqdomain.c +++ b/drivers/pci/msi/irqdomain.c @@ -57,7 +57,7 @@ static irq_hw_number_t pci_msi_domain_calc_hwirq(struct msi_desc *desc) { struct pci_dev *dev = msi_desc_to_pci_dev(desc); - return (irq_hw_number_t)desc->pci.msi_attrib.entry_nr | + return (irq_hw_number_t)desc->msi_index | pci_dev_id(dev) << 11 | (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 27; } diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c index 76c15be8e1cc..8fb4dd2a18b9 100644 --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -44,7 +44,7 @@ static inline void pci_msi_unmask(struct msi_desc *desc, u32 mask) static inline void __iomem *pci_msix_desc_addr(struct msi_desc *desc) { - return desc->pci.mask_base + desc->pci.msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE; + return desc->pci.mask_base + desc->msi_index * PCI_MSIX_ENTRY_SIZE; } /* @@ -394,13 +394,10 @@ msi_setup_entry(struct pci_dev *dev, int nvec, struct irq_affinity *affd) if (dev->dev_flags & PCI_DEV_FLAGS_HAS_MSI_MASKING) control |= PCI_MSI_FLAGS_MASKBIT; - entry->pci.msi_attrib.is_msix = 0; - entry->pci.msi_attrib.is_64 = !!(control & PCI_MSI_FLAGS_64BIT); - entry->pci.msi_attrib.is_virtual = 0; - entry->pci.msi_attrib.entry_nr = 0; + entry->pci.msi_attrib.is_64 = !!(control & PCI_MSI_FLAGS_64BIT); entry->pci.msi_attrib.can_mask = !pci_msi_ignore_mask && !!(control & PCI_MSI_FLAGS_MASKBIT); - entry->pci.msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */ + entry->pci.msi_attrib.default_irq = dev->irq; entry->pci.msi_attrib.multi_cap = (control & PCI_MSI_FLAGS_QMASK) >> 1; entry->pci.msi_attrib.multiple = ilog2(__roundup_pow_of_two(nvec)); @@ -542,12 +539,11 @@ static int msix_setup_entries(struct pci_dev *dev, void __iomem *base, entry->pci.msi_attrib.is_64 = 1; if (entries) - entry->pci.msi_attrib.entry_nr = entries[i].entry; + entry->msi_index = entries[i].entry; else - entry->pci.msi_attrib.entry_nr = i; + entry->msi_index = i; - entry->pci.msi_attrib.is_virtual = - entry->pci.msi_attrib.entry_nr >= vec_count; + entry->pci.msi_attrib.is_virtual = entry->msi_index >= vec_count; entry->pci.msi_attrib.can_mask = !pci_msi_ignore_mask && !entry->pci.msi_attrib.is_virtual; @@ -1088,7 +1084,7 @@ int pci_irq_vector(struct pci_dev *dev, unsigned int nr) struct msi_desc *entry; for_each_pci_msi_entry(entry, dev) { - if (entry->pci.msi_attrib.entry_nr == nr) + if (entry->msi_index == nr) return entry->irq; } WARN_ON_ONCE(1); @@ -1127,7 +1123,7 @@ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr) struct msi_desc *entry; for_each_pci_msi_entry(entry, dev) { - if (entry->pci.msi_attrib.entry_nr == nr) + if (entry->msi_index == nr) return &entry->affinity->mask; } WARN_ON_ONCE(1); -- cgit v1.2.3-71-gd317