diff options
Diffstat (limited to 'src/vlib/linux')
| -rw-r--r-- | src/vlib/linux/pci.c | 124 |
1 files changed, 121 insertions, 3 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c index bc3e15ea00d..910f8c2f9cc 100644 --- a/src/vlib/linux/pci.c +++ b/src/vlib/linux/pci.c @@ -104,9 +104,6 @@ typedef struct /* Minor device for uio device. */ u32 uio_minor; - /* Index given by clib_file_add. */ - u32 clib_file_index; - /* Interrupt handlers */ linux_pci_irq_t intx_irq; linux_pci_irq_t *msix_irqs; @@ -852,6 +849,7 @@ add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di, { linux_pci_main_t *lpm = &linux_pci_main; struct vfio_device_info device_info = { 0 }; + struct vfio_region_info reg = { 0 }; clib_error_t *err = 0; u8 *s = 0; @@ -875,6 +873,17 @@ add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di, goto error; } + reg.argsz = sizeof (struct vfio_region_info); + reg.index = VFIO_PCI_CONFIG_REGION_INDEX; + if (ioctl (p->fd, VFIO_DEVICE_GET_REGION_INFO, ®) < 0) + { + err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) '%U'", + format_vlib_pci_addr, &di->addr); + goto error; + } + p->config_offset = reg.offset; + p->config_fd = p->fd; + /* reset if device supports it */ if (device_info.flags & VFIO_DEVICE_FLAGS_RESET) if (ioctl (p->fd, VFIO_DEVICE_RESET) < 0) @@ -1019,6 +1028,115 @@ vlib_pci_map_region_fixed (vlib_pci_dev_handle_t h, u32 resource, u8 * addr, return (vlib_pci_map_region_int (h, resource, addr, result)); } +clib_error_t * +vlib_pci_device_open (vlib_pci_addr_t * addr, + pci_device_id_t ids[], vlib_pci_dev_handle_t * handle) +{ + linux_pci_main_t *lpm = &linux_pci_main; + vlib_pci_device_info_t *di; + linux_pci_device_t *p; + clib_error_t *err = 0; + pci_device_id_t *i; + + di = vlib_pci_get_device_info (addr, &err); + + if (err) + return err; + for (i = ids; i->vendor_id != 0; i++) + if (i->vendor_id == di->vendor_id && i->device_id == di->device_id) + break; + + if (i->vendor_id == 0) + return clib_error_return (0, "Wrong vendor or device id"); + + pool_get (lpm->linux_pci_devices, p); + p->handle = p - lpm->linux_pci_devices; + p->intx_irq.fd = -1; + + if (di->iommu_group != -1) + err = add_device_vfio (p, di, 0); + else + err = add_device_uio (p, di, 0); + if (err) + goto error; + + *handle = p->handle; + +error: + vlib_pci_free_device_info (di); + if (err) + { + memset (p, 0, sizeof (linux_pci_device_t)); + pool_put (lpm->linux_pci_devices, p); + } + + return err; +} + +void +vlib_pci_device_close (vlib_pci_dev_handle_t h) +{ + linux_pci_main_t *lpm = &linux_pci_main; + linux_pci_device_t *p = linux_pci_get_device (h); + linux_pci_irq_t *irq; + linux_pci_region_t *res; + clib_error_t *err = 0; + + if (p->type == LINUX_PCI_DEVICE_TYPE_UIO) + { + irq = &p->intx_irq; + clib_file_del_by_index (&file_main, irq->clib_file_index); + close (p->config_fd); + } + else if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO) + { + irq = &p->intx_irq; + /* close INTx irqs */ + if (irq->fd != -1) + { + err = vfio_set_irqs (p, VFIO_PCI_INTX_IRQ_INDEX, 0, 0, + VFIO_IRQ_SET_ACTION_TRIGGER, 0); + clib_error_free (err); + clib_file_del_by_index (&file_main, irq->clib_file_index); + close (irq->fd); + } + + /* close MSI-X irqs */ + if (vec_len (p->msix_irqs)) + { + err = vfio_set_irqs (p, VFIO_PCI_MSIX_IRQ_INDEX, 0, 0, + VFIO_IRQ_SET_ACTION_TRIGGER, 0); + clib_error_free (err); + /* *INDENT-OFF* */ + vec_foreach (irq, p->msix_irqs) + { + if (irq->fd == -1) + continue; + clib_file_del_by_index (&file_main, irq->clib_file_index); + close (irq->fd); + } + /* *INDENT-ON* */ + vec_free (p->msix_irqs); + } + } + + /* *INDENT-OFF* */ + vec_foreach (res, p->regions) + { + if (res->size == 0) + continue; + munmap (res->addr, res->size); + if (res->fd != -1) + close (res->fd); + } + /* *INDENT-ON* */ + vec_free (p->regions); + + close (p->fd); + memset (p, 0, sizeof (linux_pci_device_t)); + pool_put (lpm->linux_pci_devices, p); +} + void init_device_from_registered (vlib_pci_device_info_t * di) { |