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-rw-r--r--src/vlib/linux/pci.c61
1 files changed, 29 insertions, 32 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c
index 19be9ff8d18..8954bccd93f 100644
--- a/src/vlib/linux/pci.c
+++ b/src/vlib/linux/pci.c
@@ -69,16 +69,14 @@ typedef struct
/* File descriptor for config space read/write. */
int config_fd;
+ u64 config_offset;
- /* File descriptor for /dev/uio%d */
- int uio_fd;
+ /* Device File descriptor */
+ int fd;
/* Minor device for uio device. */
u32 uio_minor;
- /* vfio */
- int vfio_device_fd;
-
/* Index given by clib_file_add. */
u32 clib_file_index;
@@ -548,7 +546,7 @@ linux_pci_vfio_unmask_intx (linux_pci_device_t * d)
.flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_UNMASK,
};
- if (ioctl (d->vfio_device_fd, VFIO_DEVICE_SET_IRQS, &i) < 0)
+ if (ioctl (d->fd, VFIO_DEVICE_SET_IRQS, &i) < 0)
{
err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_SET_IRQS) '%U'",
format_vlib_pci_addr, &d->addr);
@@ -599,12 +597,13 @@ add_device_uio (vlib_main_t * vm, linux_pci_device_t * p,
u8 *s = 0;
p->addr.as_u32 = di->addr.as_u32;
- p->uio_fd = -1;
+ p->fd = -1;
s = format (s, "%s/%U/config%c", sysfs_pci_dev_path,
format_vlib_pci_addr, &di->addr, 0);
p->config_fd = open ((char *) s, O_RDWR);
+ p->config_offset = 0;
vec_reset_length (s);
if (p->config_fd == -1)
@@ -620,15 +619,15 @@ add_device_uio (vlib_main_t * vm, linux_pci_device_t * p,
vec_reset_length (s);
s = format (s, "/dev/uio%d%c", p->uio_minor, 0);
- p->uio_fd = open ((char *) s, O_RDWR);
- if (p->uio_fd < 0)
+ p->fd = open ((char *) s, O_RDWR);
+ if (p->fd < 0)
{
err = clib_error_return_unix (0, "open '%s'", s);
goto error;
}
t.read_function = linux_pci_uio_read_ready;
- t.file_descriptor = p->uio_fd;
+ t.file_descriptor = p->fd;
t.error_function = linux_pci_uio_error_ready;
t.private_data = p->handle;
@@ -642,8 +641,8 @@ error:
{
if (p->config_fd != -1)
close (p->config_fd);
- if (p->uio_fd != -1)
- close (p->uio_fd);
+ if (p->fd != -1)
+ close (p->fd);
}
return err;
}
@@ -732,11 +731,11 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
vlib_pci_device_info_t * di, pci_device_registration_t * r)
{
linux_pci_vfio_iommu_group_t *g;
- struct vfio_device_info device_info;
+ struct vfio_device_info device_info = { 0 };
+ struct vfio_region_info reg = { 0 };
struct vfio_irq_info irq_info = { 0 };
clib_error_t *err = 0;
u8 *s = 0;
- int dfd;
p->addr.as_u32 = di->addr.as_u32;
@@ -752,17 +751,16 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
g = get_vfio_iommu_group (di->iommu_group);
s = format (s, "%U%c", format_vlib_pci_addr, &di->addr, 0);
- if ((dfd = ioctl (g->fd, VFIO_GROUP_GET_DEVICE_FD, (char *) s)) < 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);
- p->vfio_device_fd = dfd;
device_info.argsz = sizeof (device_info);
- if (ioctl (dfd, VFIO_DEVICE_GET_INFO, &device_info) < 0)
+ if (ioctl (p->fd, VFIO_DEVICE_GET_INFO, &device_info) < 0)
{
err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) '%U'",
format_vlib_pci_addr, &di->addr);
@@ -771,7 +769,7 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
irq_info.argsz = sizeof (struct vfio_irq_info);
irq_info.index = VFIO_PCI_INTX_IRQ_INDEX;
- if (ioctl (dfd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info) < 0)
+ if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info) < 0)
{
err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_IRQ_INFO) "
"'%U'", format_vlib_pci_addr, &di->addr);
@@ -780,7 +778,7 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
/* reset if device supports it */
if (device_info.flags & VFIO_DEVICE_FLAGS_RESET)
- if (ioctl (dfd, VFIO_DEVICE_RESET) < 0)
+ if (ioctl (p->fd, VFIO_DEVICE_RESET) < 0)
{
err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_RESET) '%U'",
format_vlib_pci_addr, &di->addr);
@@ -801,7 +799,7 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
clib_memcpy (&irq_set->data, &efd, sizeof (int));
- if (ioctl (dfd, VFIO_DEVICE_SET_IRQS, irq_set) < 0)
+ if (ioctl (p->fd, VFIO_DEVICE_SET_IRQS, irq_set) < 0)
{
err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_SET_IRQS) '%U'",
format_vlib_pci_addr, &di->addr);
@@ -820,17 +818,16 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
p->interrupt_handler = r->interrupt_handler;
- s = format (s, "%s/%U/config%c", sysfs_pci_dev_path,
- format_vlib_pci_addr, &di->addr, 0);
-
- p->config_fd = open ((char *) s, O_RDWR);
- vec_reset_length (s);
-
- if (p->config_fd == -1)
+ reg.argsz = sizeof (struct vfio_region_info);
+ reg.index = VFIO_PCI_CONFIG_REGION_INDEX;
+ if (ioctl (p->fd, VFIO_DEVICE_GET_REGION_INFO, &reg) < 0)
{
- err = clib_error_return_unix (0, "open '%s'", s);
+ err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_REGION_INFO) "
+ "'%U'", format_vlib_pci_addr, &di->addr);
goto error;
}
+ p->config_offset = reg.offset;
+ p->config_fd = p->fd;
err = r->init_function (vm, p->handle);
@@ -838,8 +835,8 @@ error:
vec_free (s);
if (err)
{
- if (dfd != -1)
- close (dfd);
+ if (p->fd != -1)
+ close (p->fd);
if (p->config_fd != -1)
close (p->config_fd);
}
@@ -856,9 +853,9 @@ vlib_pci_read_write_config (vlib_pci_dev_handle_t h,
int n;
if (read_or_write == VLIB_READ)
- n = pread (p->config_fd, data, n_bytes, address);
+ n = pread (p->config_fd, data, n_bytes, p->config_offset + address);
else
- n = pwrite (p->config_fd, data, n_bytes, address);
+ n = pwrite (p->config_fd, data, n_bytes, p->config_offset + address);
if (n != n_bytes)
return clib_error_return_unix (0, "%s",