diff options
Diffstat (limited to 'lib/librte_eal/linuxapp/eal/eal_interrupts.c')
| -rw-r--r-- | lib/librte_eal/linuxapp/eal/eal_interrupts.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c b/lib/librte_eal/linuxapp/eal/eal_interrupts.c index 4076c6d6..39252a88 100644 --- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c +++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c @@ -33,6 +33,7 @@ #include <rte_errno.h> #include <rte_spinlock.h> #include <rte_pause.h> +#include <rte_vfio.h> #include "eal_private.h" #include "eal_vfio.h" @@ -308,6 +309,66 @@ vfio_disable_msix(const struct rte_intr_handle *intr_handle) { return ret; } + +#ifdef HAVE_VFIO_DEV_REQ_INTERFACE +/* enable req notifier */ +static int +vfio_enable_req(const struct rte_intr_handle *intr_handle) +{ + int len, ret; + char irq_set_buf[IRQ_SET_BUF_LEN]; + struct vfio_irq_set *irq_set; + int *fd_ptr; + + len = sizeof(irq_set_buf); + + irq_set = (struct vfio_irq_set *) irq_set_buf; + irq_set->argsz = len; + irq_set->count = 1; + irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD | + VFIO_IRQ_SET_ACTION_TRIGGER; + irq_set->index = VFIO_PCI_REQ_IRQ_INDEX; + irq_set->start = 0; + fd_ptr = (int *) &irq_set->data; + *fd_ptr = intr_handle->fd; + + ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set); + + if (ret) { + RTE_LOG(ERR, EAL, "Error enabling req interrupts for fd %d\n", + intr_handle->fd); + return -1; + } + + return 0; +} + +/* disable req notifier */ +static int +vfio_disable_req(const struct rte_intr_handle *intr_handle) +{ + struct vfio_irq_set *irq_set; + char irq_set_buf[IRQ_SET_BUF_LEN]; + int len, ret; + + len = sizeof(struct vfio_irq_set); + + irq_set = (struct vfio_irq_set *) irq_set_buf; + irq_set->argsz = len; + irq_set->count = 0; + irq_set->flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_TRIGGER; + irq_set->index = VFIO_PCI_REQ_IRQ_INDEX; + irq_set->start = 0; + + ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set); + + if (ret) + RTE_LOG(ERR, EAL, "Error disabling req interrupts for fd %d\n", + intr_handle->fd); + + return ret; +} +#endif #endif static int @@ -556,6 +617,12 @@ rte_intr_enable(const struct rte_intr_handle *intr_handle) if (vfio_enable_intx(intr_handle)) return -1; break; +#ifdef HAVE_VFIO_DEV_REQ_INTERFACE + case RTE_INTR_HANDLE_VFIO_REQ: + if (vfio_enable_req(intr_handle)) + return -1; + break; +#endif #endif /* not used at this moment */ case RTE_INTR_HANDLE_DEV_EVENT: @@ -606,6 +673,12 @@ rte_intr_disable(const struct rte_intr_handle *intr_handle) if (vfio_disable_intx(intr_handle)) return -1; break; +#ifdef HAVE_VFIO_DEV_REQ_INTERFACE + case RTE_INTR_HANDLE_VFIO_REQ: + if (vfio_disable_req(intr_handle)) + return -1; + break; +#endif #endif /* not used at this moment */ case RTE_INTR_HANDLE_DEV_EVENT: @@ -672,6 +745,12 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds) case RTE_INTR_HANDLE_VFIO_LEGACY: bytes_read = sizeof(buf.vfio_intr_count); break; +#ifdef HAVE_VFIO_DEV_REQ_INTERFACE + case RTE_INTR_HANDLE_VFIO_REQ: + bytes_read = 0; + call = true; + break; +#endif #endif case RTE_INTR_HANDLE_VDEV: case RTE_INTR_HANDLE_EXT: |