diff options
| -rw-r--r-- | arch/s390/pci/pci.c | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/x86_init.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/x86_init.c | 10 | ||||
| -rw-r--r-- | arch/x86/pci/xen.c | 15 | ||||
| -rw-r--r-- | drivers/pci/msi.c | 29 | ||||
| -rw-r--r-- | include/linux/msi.h | 5 |
6 files changed, 20 insertions, 46 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 2fa7b14b9c08..552b9908aa77 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -448,9 +448,9 @@ void arch_teardown_msi_irqs(struct pci_dev *pdev) /* Release MSI interrupts */ list_for_each_entry(msi, &pdev->msi_list, list) { if (msi->msi_attrib.is_msix) - default_msix_mask_irq(msi, 1); + __msix_mask_irq(msi, 1); else - default_msi_mask_irq(msi, 1, 1); + __msi_mask_irq(msi, 1, 1); irq_set_msi_desc(msi->irq, NULL); irq_free_desc(msi->irq); msi->msg.address_lo = 0; diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index e45e4da96bf1..f58a9c7a3c86 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -172,7 +172,6 @@ struct x86_platform_ops { struct pci_dev; struct msi_msg; -struct msi_desc; struct x86_msi_ops { int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type); @@ -183,8 +182,6 @@ struct x86_msi_ops { void (*teardown_msi_irqs)(struct pci_dev *dev); void (*restore_msi_irqs)(struct pci_dev *dev); int (*setup_hpet_msi)(unsigned int irq, unsigned int id); - u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag); - u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag); }; struct IO_APIC_route_entry; diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index e48b674639cc..234b0722de53 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -116,8 +116,6 @@ struct x86_msi_ops x86_msi = { .teardown_msi_irqs = default_teardown_msi_irqs, .restore_msi_irqs = default_restore_msi_irqs, .setup_hpet_msi = default_setup_hpet_msi, - .msi_mask_irq = default_msi_mask_irq, - .msix_mask_irq = default_msix_mask_irq, }; /* MSI arch specific hooks */ @@ -140,14 +138,6 @@ void arch_restore_msi_irqs(struct pci_dev *dev) { x86_msi.restore_msi_irqs(dev); } -u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) -{ - return x86_msi.msi_mask_irq(desc, mask, flag); -} -u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag) -{ - return x86_msi.msix_mask_irq(desc, flag); -} #endif struct x86_io_apic_ops x86_io_apic_ops = { diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 093f5f4272d3..466b978e13a5 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -394,14 +394,7 @@ static void xen_teardown_msi_irq(unsigned int irq) { xen_destroy_irq(irq); } -static u32 xen_nop_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) -{ - return 0; -} -static u32 xen_nop_msix_mask_irq(struct msi_desc *desc, u32 flag) -{ - return 0; -} + #endif int __init pci_xen_init(void) @@ -425,8 +418,7 @@ int __init pci_xen_init(void) x86_msi.setup_msi_irqs = xen_setup_msi_irqs; x86_msi.teardown_msi_irq = xen_teardown_msi_irq; x86_msi.teardown_msi_irqs = xen_teardown_msi_irqs; - x86_msi.msi_mask_irq = xen_nop_msi_mask_irq; - x86_msi.msix_mask_irq = xen_nop_msix_mask_irq; + pci_msi_ignore_mask = 1; #endif return 0; } @@ -506,8 +498,7 @@ int __init pci_xen_initial_domain(void) x86_msi.setup_msi_irqs = xen_initdom_setup_msi_irqs; x86_msi.teardown_msi_irq = xen_teardown_msi_irq; x86_msi.restore_msi_irqs = xen_initdom_restore_msi_irqs; - x86_msi.msi_mask_irq = xen_nop_msi_mask_irq; - x86_msi.msix_mask_irq = xen_nop_msix_mask_irq; + pci_msi_ignore_mask = 1; #endif xen_setup_acpi_sci(); __acpi_register_gsi = acpi_register_gsi_xen; diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 9fab30af0e75..d9a92cf6a6d6 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -23,6 +23,7 @@ #include "pci.h" static int pci_msi_enable = 1; +int pci_msi_ignore_mask; #define msix_table_size(flags) ((flags & PCI_MSIX_FLAGS_QSIZE) + 1) @@ -163,11 +164,11 @@ static inline __attribute_const__ u32 msi_mask(unsigned x) * reliably as devices without an INTx disable bit will then generate a * level IRQ which will never be cleared. */ -u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) +u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) { u32 mask_bits = desc->masked; - if (!desc->msi_attrib.maskbit) + if (pci_msi_ignore_mask || !desc->msi_attrib.maskbit) return 0; mask_bits &= ~mask; @@ -177,14 +178,9 @@ u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) return mask_bits; } -__weak u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) -{ - return default_msi_mask_irq(desc, mask, flag); -} - static void msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) { - desc->masked = arch_msi_mask_irq(desc, mask, flag); + desc->masked = __msi_mask_irq(desc, mask, flag); } /* @@ -194,11 +190,15 @@ static void msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag) * file. This saves a few milliseconds when initialising devices with lots * of MSI-X interrupts. */ -u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag) +u32 __msix_mask_irq(struct msi_desc *desc, u32 flag) { u32 mask_bits = desc->masked; unsigned offset = desc->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE + PCI_MSIX_ENTRY_VECTOR_CTRL; + + if (pci_msi_ignore_mask) + return 0; + mask_bits &= ~PCI_MSIX_ENTRY_CTRL_MASKBIT; if (flag) mask_bits |= PCI_MSIX_ENTRY_CTRL_MASKBIT; @@ -207,14 +207,9 @@ u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag) return mask_bits; } -__weak u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag) -{ - return default_msix_mask_irq(desc, flag); -} - static void msix_mask_irq(struct msi_desc *desc, u32 flag) { - desc->masked = arch_msix_mask_irq(desc, flag); + desc->masked = __msix_mask_irq(desc, flag); } static void msi_set_mask_bit(struct irq_data *data, u32 flag) @@ -869,7 +864,7 @@ void pci_msi_shutdown(struct pci_dev *dev) /* Return the device with MSI unmasked as initial states */ mask = msi_mask(desc->msi_attrib.multi_cap); /* Keep cached state to be restored */ - arch_msi_mask_irq(desc, mask, ~mask); + __msi_mask_irq(desc, mask, ~mask); /* Restore dev->irq to its default pin-assertion irq */ dev->irq = desc->msi_attrib.default_irq; @@ -967,7 +962,7 @@ void pci_msix_shutdown(struct pci_dev *dev) /* Return the device with MSI-X masked as initial states */ list_for_each_entry(entry, &dev->msi_list, list) { /* Keep cached states to be restored */ - arch_msix_mask_irq(entry, 1); + __msix_mask_irq(entry, 1); } msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_ENABLE, 0); diff --git a/include/linux/msi.h b/include/linux/msi.h index 44f4746d033b..efad12742e45 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -10,6 +10,7 @@ struct msi_msg { u32 data; /* 16 bits of msi message data */ }; +extern int pci_msi_ignore_mask; /* Helper functions */ struct irq_data; struct msi_desc; @@ -21,6 +22,8 @@ void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); void read_msi_msg(unsigned int irq, struct msi_msg *msg); void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg); void write_msi_msg(unsigned int irq, struct msi_msg *msg); +u32 __msix_mask_irq(struct msi_desc *desc, u32 flag); +u32 __msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag); struct msi_desc { struct { @@ -61,8 +64,6 @@ void arch_restore_msi_irqs(struct pci_dev *dev); void default_teardown_msi_irqs(struct pci_dev *dev); void default_restore_msi_irqs(struct pci_dev *dev); -u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag); -u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag); struct msi_chip { struct module *owner; |