diff options
| -rw-r--r-- | drivers/xen/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/xen/acpi.c | 24 | ||||
| -rw-r--r-- | drivers/xen/privcmd.c | 6 | ||||
| -rw-r--r-- | drivers/xen/xen-pciback/pci_stub.c | 11 | ||||
| -rw-r--r-- | include/xen/acpi.h | 14 |
5 files changed, 44 insertions, 12 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 72ddee4c1544..f7d6f47971fd 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -261,7 +261,6 @@ config XEN_SCSI_BACKEND config XEN_PRIVCMD tristate "Xen hypercall passthrough driver" depends on XEN - imply XEN_PCIDEV_BACKEND default m help The hypercall passthrough driver allows privileged user programs to diff --git a/drivers/xen/acpi.c b/drivers/xen/acpi.c index 9e2096524fbc..d2ee605c5ca1 100644 --- a/drivers/xen/acpi.c +++ b/drivers/xen/acpi.c @@ -125,3 +125,27 @@ int xen_acpi_get_gsi_info(struct pci_dev *dev, return 0; } EXPORT_SYMBOL_GPL(xen_acpi_get_gsi_info); + +static get_gsi_from_sbdf_t get_gsi_from_sbdf; +static DEFINE_RWLOCK(get_gsi_from_sbdf_lock); + +void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func) +{ + write_lock(&get_gsi_from_sbdf_lock); + get_gsi_from_sbdf = func; + write_unlock(&get_gsi_from_sbdf_lock); +} +EXPORT_SYMBOL_GPL(xen_acpi_register_get_gsi_func); + +int xen_acpi_get_gsi_from_sbdf(u32 sbdf) +{ + int ret = -EOPNOTSUPP; + + read_lock(&get_gsi_from_sbdf_lock); + if (get_gsi_from_sbdf) + ret = get_gsi_from_sbdf(sbdf); + read_unlock(&get_gsi_from_sbdf_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(xen_acpi_get_gsi_from_sbdf); diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 3273cb8c2a66..4f75bc876454 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -850,15 +850,13 @@ out: static long privcmd_ioctl_pcidev_get_gsi(struct file *file, void __user *udata) { #if defined(CONFIG_XEN_ACPI) - int rc = -EINVAL; + int rc; struct privcmd_pcidev_get_gsi kdata; if (copy_from_user(&kdata, udata, sizeof(kdata))) return -EFAULT; - if (IS_REACHABLE(CONFIG_XEN_PCIDEV_BACKEND)) - rc = pcistub_get_gsi_from_sbdf(kdata.sbdf); - + rc = xen_acpi_get_gsi_from_sbdf(kdata.sbdf); if (rc < 0) return rc; diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c index 2f3da5ac62cd..b616b7768c3b 100644 --- a/drivers/xen/xen-pciback/pci_stub.c +++ b/drivers/xen/xen-pciback/pci_stub.c @@ -227,7 +227,7 @@ static struct pci_dev *pcistub_device_get_pci_dev(struct xen_pcibk_device *pdev, } #ifdef CONFIG_XEN_ACPI -int pcistub_get_gsi_from_sbdf(unsigned int sbdf) +static int pcistub_get_gsi_from_sbdf(unsigned int sbdf) { struct pcistub_device *psdev; int domain = (sbdf >> 16) & 0xffff; @@ -242,7 +242,6 @@ int pcistub_get_gsi_from_sbdf(unsigned int sbdf) return psdev->gsi; } -EXPORT_SYMBOL_GPL(pcistub_get_gsi_from_sbdf); #endif struct pci_dev *pcistub_get_pci_dev_by_slot(struct xen_pcibk_device *pdev, @@ -1757,11 +1756,19 @@ static int __init xen_pcibk_init(void) bus_register_notifier(&pci_bus_type, &pci_stub_nb); #endif +#ifdef CONFIG_XEN_ACPI + xen_acpi_register_get_gsi_func(pcistub_get_gsi_from_sbdf); +#endif + return err; } static void __exit xen_pcibk_cleanup(void) { +#ifdef CONFIG_XEN_ACPI + xen_acpi_register_get_gsi_func(NULL); +#endif + #ifdef CONFIG_PCI_IOV bus_unregister_notifier(&pci_bus_type, &pci_stub_nb); #endif diff --git a/include/xen/acpi.h b/include/xen/acpi.h index daa96a22d257..c66a8461612e 100644 --- a/include/xen/acpi.h +++ b/include/xen/acpi.h @@ -35,6 +35,8 @@ #include <linux/types.h> +typedef int (*get_gsi_from_sbdf_t)(u32 sbdf); + #ifdef CONFIG_XEN_DOM0 #include <asm/xen/hypervisor.h> #include <xen/xen.h> @@ -72,6 +74,8 @@ int xen_acpi_get_gsi_info(struct pci_dev *dev, int *gsi_out, int *trigger_out, int *polarity_out); +void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func); +int xen_acpi_get_gsi_from_sbdf(u32 sbdf); #else static inline void xen_acpi_sleep_register(void) { @@ -89,12 +93,12 @@ static inline int xen_acpi_get_gsi_info(struct pci_dev *dev, { return -1; } -#endif -#ifdef CONFIG_XEN_PCI_STUB -int pcistub_get_gsi_from_sbdf(unsigned int sbdf); -#else -static inline int pcistub_get_gsi_from_sbdf(unsigned int sbdf) +static inline void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func) +{ +} + +static inline int xen_acpi_get_gsi_from_sbdf(u32 sbdf) { return -1; } |