diff options
Diffstat (limited to 'drivers/xen/privcmd.c')
| -rw-r--r-- | drivers/xen/privcmd.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 54e4f285c0f4..3273cb8c2a66 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -46,6 +46,9 @@ #include <xen/page.h> #include <xen/xen-ops.h> #include <xen/balloon.h> +#ifdef CONFIG_XEN_ACPI +#include <xen/acpi.h> +#endif #include "privcmd.h" @@ -844,6 +847,31 @@ out: return rc; } +static long privcmd_ioctl_pcidev_get_gsi(struct file *file, void __user *udata) +{ +#if defined(CONFIG_XEN_ACPI) + int rc = -EINVAL; + 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); + + if (rc < 0) + return rc; + + kdata.gsi = rc; + if (copy_to_user(udata, &kdata, sizeof(kdata))) + return -EFAULT; + + return 0; +#else + return -EINVAL; +#endif +} + #ifdef CONFIG_XEN_PRIVCMD_EVENTFD /* Irqfd support */ static struct workqueue_struct *irqfd_cleanup_wq; @@ -1543,6 +1571,10 @@ static long privcmd_ioctl(struct file *file, ret = privcmd_ioctl_ioeventfd(file, udata); break; + case IOCTL_PRIVCMD_PCIDEV_GET_GSI: + ret = privcmd_ioctl_pcidev_get_gsi(file, udata); + break; + default: break; } |