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Diffstat (limited to 'src/vlib/linux/pci.c')
-rw-r--r--src/vlib/linux/pci.c134
1 files changed, 4 insertions, 130 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c
index 8aa0e29248c..bc3e15ea00d 100644
--- a/src/vlib/linux/pci.c
+++ b/src/vlib/linux/pci.c
@@ -42,6 +42,7 @@
#include <vlib/vlib.h>
#include <vlib/pci/pci.h>
#include <vlib/unix/unix.h>
+#include <vlib/linux/vfio.h>
#include <sys/types.h>
#include <sys/stat.h>
@@ -115,29 +116,12 @@ typedef struct
} linux_pci_device_t;
-typedef struct
-{
- int group;
- int fd;
- int refcnt;
-} linux_pci_vfio_iommu_group_t;
-
/* Pool of PCI devices. */
typedef struct
{
vlib_main_t *vlib_main;
linux_pci_device_t *linux_pci_devices;
- /* VFIO */
- int vfio_container_fd;
- int vfio_iommu_mode;
-
- /* pool of IOMMU groups */
- linux_pci_vfio_iommu_group_t *iommu_groups;
-
- /* iommu group pool index by group id hash */
- uword *iommu_pool_index_by_group;
-
} linux_pci_main_t;
extern linux_pci_main_t linux_pci_main;
@@ -180,7 +164,7 @@ linux_pci_main_t linux_pci_main;
vlib_pci_device_info_t *
vlib_pci_get_device_info (vlib_pci_addr_t * addr, clib_error_t ** error)
{
- linux_pci_main_t *lpm = &linux_pci_main;
+ linux_vfio_main_t *lvm = &vfio_main;
clib_error_t *err;
vlib_pci_device_info_t *di;
u8 *f = 0;
@@ -271,7 +255,7 @@ vlib_pci_get_device_info (vlib_pci_addr_t * addr, clib_error_t ** error)
di->driver_name = clib_sysfs_link_to_name ((char *) f);
di->iommu_group = -1;
- if (lpm->vfio_container_fd != -1)
+ if (lvm->container_fd != -1)
{
u8 *tmpstr;
vec_reset_length (f);
@@ -862,91 +846,11 @@ vlib_pci_disable_msix_irq (vlib_pci_dev_handle_t h, u16 start, u16 count)
VFIO_IRQ_SET_ACTION_TRIGGER, fds);
}
-static linux_pci_vfio_iommu_group_t *
-get_vfio_iommu_group (int group)
-{
- linux_pci_main_t *lpm = &linux_pci_main;
- uword *p;
-
- p = hash_get (lpm->iommu_pool_index_by_group, group);
-
- return p ? pool_elt_at_index (lpm->iommu_groups, p[0]) : 0;
-}
-
-static clib_error_t *
-open_vfio_iommu_group (int group)
-{
- linux_pci_main_t *lpm = &linux_pci_main;
- linux_pci_vfio_iommu_group_t *g;
- clib_error_t *err = 0;
- struct vfio_group_status group_status;
- u8 *s = 0;
- int fd;
-
- g = get_vfio_iommu_group (group);
- if (g)
- {
- g->refcnt++;
- return 0;
- }
- s = format (s, "/dev/vfio/%u%c", group, 0);
- fd = open ((char *) s, O_RDWR);
- if (fd < 0)
- return clib_error_return_unix (0, "open '%s'", s);
-
- group_status.argsz = sizeof (group_status);
- if (ioctl (fd, VFIO_GROUP_GET_STATUS, &group_status) < 0)
- {
- err = clib_error_return_unix (0, "ioctl(VFIO_GROUP_GET_STATUS) '%s'",
- s);
- goto error;
- }
-
- if (!(group_status.flags & VFIO_GROUP_FLAGS_VIABLE))
- {
- err = clib_error_return (0, "iommu group %d is not viable (not all "
- "devices in this group bound to vfio-pci)",
- group);
- goto error;
- }
-
- if (ioctl (fd, VFIO_GROUP_SET_CONTAINER, &lpm->vfio_container_fd) < 0)
- {
- err = clib_error_return_unix (0, "ioctl(VFIO_GROUP_SET_CONTAINER) '%s'",
- s);
- goto error;
- }
-
- if (lpm->vfio_iommu_mode == 0)
- {
- if (ioctl (lpm->vfio_container_fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU) <
- 0)
- {
- err = clib_error_return_unix (0, "ioctl(VFIO_SET_IOMMU) "
- "'/dev/vfio/vfio'");
- goto error;
- }
- lpm->vfio_iommu_mode = VFIO_TYPE1_IOMMU;
- }
-
-
- pool_get (lpm->iommu_groups, g);
- g->fd = fd;
- g->refcnt = 1;
- hash_set (lpm->iommu_pool_index_by_group, group, g - lpm->iommu_groups);
- vec_free (s);
- return 0;
-error:
- close (fd);
- return err;
-}
-
static clib_error_t *
add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
pci_device_registration_t * r)
{
linux_pci_main_t *lpm = &linux_pci_main;
- linux_pci_vfio_iommu_group_t *g;
struct vfio_device_info device_info = { 0 };
clib_error_t *err = 0;
u8 *s = 0;
@@ -960,20 +864,9 @@ add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
"vfio-pci", format_vlib_pci_addr, &di->addr,
di->iommu_group);
- if ((err = open_vfio_iommu_group (di->iommu_group)))
+ if ((err = linux_vfio_group_get_device_fd (&p->addr, &p->fd)))
return err;
- g = get_vfio_iommu_group (di->iommu_group);
-
- s = format (s, "%U%c", format_vlib_pci_addr, &di->addr, 0);
- if ((p->fd = ioctl (g->fd, VFIO_GROUP_GET_DEVICE_FD, (char *) s)) < 0)
- {
- err = clib_error_return_unix (0, "ioctl(VFIO_GROUP_GET_DEVICE_FD) '%U'",
- format_vlib_pci_addr, &di->addr);
- goto error;
- }
- vec_reset_length (s);
-
device_info.argsz = sizeof (device_info);
if (ioctl (p->fd, VFIO_DEVICE_GET_INFO, &device_info) < 0)
{
@@ -1235,10 +1128,8 @@ clib_error_t *
linux_pci_init (vlib_main_t * vm)
{
vlib_pci_main_t *pm = &pci_main;
- linux_pci_main_t *lpm = &linux_pci_main;
vlib_pci_addr_t *addr = 0, *addrs;
clib_error_t *error;
- int fd;
pm->vlib_main = vm;
@@ -1247,23 +1138,6 @@ linux_pci_init (vlib_main_t * vm)
ASSERT (sizeof (vlib_pci_addr_t) == sizeof (u32));
- fd = open ("/dev/vfio/vfio", O_RDWR);
-
- if ((fd != -1) && (ioctl (fd, VFIO_GET_API_VERSION) != VFIO_API_VERSION))
- {
- close (fd);
- fd = -1;
- }
-
- if ((fd != -1) && (ioctl (fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU) == 0))
- {
- close (fd);
- fd = -1;
- }
-
- lpm->vfio_container_fd = fd;
- lpm->iommu_pool_index_by_group = hash_create (0, sizeof (uword));
-
addrs = vlib_pci_get_all_dev_addrs ();
/* *INDENT-OFF* */
vec_foreach (addr, addrs)