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-rw-r--r--src/vlib/linux/pci.c39
-rw-r--r--src/vlib/linux/vfio.c56
-rw-r--r--src/vlib/linux/vfio.h2
3 files changed, 77 insertions, 20 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c
index 722fb888117..168acde7288 100644
--- a/src/vlib/linux/pci.c
+++ b/src/vlib/linux/pci.c
@@ -966,13 +966,7 @@ add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
goto error;
}
- pci_log_debug (vm, p, "%s region_info index:%u size:0x%lx offset:0x%lx "
- "flags: %s%s%s(0x%x)", __func__,
- reg.index, reg.size, reg.offset,
- reg.flags & VFIO_REGION_INFO_FLAG_READ ? "rd " : "",
- reg.flags & VFIO_REGION_INFO_FLAG_WRITE ? "wr " : "",
- reg.flags & VFIO_REGION_INFO_FLAG_MMAP ? "mmap " : "",
- reg.flags);
+ pci_log_debug (vm, p, "%s %U", __func__, format_vfio_region_info, &reg);
p->config_offset = reg.offset;
p->config_fd = p->fd;
@@ -1087,23 +1081,28 @@ vlib_pci_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 bar, int *fd,
}
else if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO)
{
- struct vfio_region_info reg = { 0 };
- reg.argsz = sizeof (struct vfio_region_info);
- reg.index = bar;
- if (ioctl (p->fd, VFIO_DEVICE_GET_REGION_INFO, &reg) < 0)
+ struct vfio_region_info *r;
+ u32 sz = sizeof (struct vfio_region_info);
+ again:
+ r = clib_mem_alloc (sz);
+ clib_memset (r, 0, sz);
+ r->argsz = sz;
+ r->index = bar;
+ if (ioctl (p->fd, VFIO_DEVICE_GET_REGION_INFO, r) < 0)
return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) "
"'%U'", format_vlib_pci_addr,
&p->addr);
+ if (sz != r->argsz)
+ {
+ sz = r->argsz;
+ clib_mem_free (r);
+ goto again;
+ }
_fd = p->fd;
- _size = reg.size;
- _offset = reg.offset;
- pci_log_debug (vm, p, "%s region_info index:%u size:0x%lx offset:0x%lx "
- "flags: %s%s%s(0x%x)", __func__,
- reg.index, reg.size, reg.offset,
- reg.flags & VFIO_REGION_INFO_FLAG_READ ? "rd " : "",
- reg.flags & VFIO_REGION_INFO_FLAG_WRITE ? "wr " : "",
- reg.flags & VFIO_REGION_INFO_FLAG_MMAP ? "mmap " : "",
- reg.flags);
+ _size = r->size;
+ _offset = r->offset;
+ pci_log_debug (vm, p, "%s %U", __func__, format_vfio_region_info, r);
+ clib_mem_free (r);
}
else
ASSERT (0);
diff --git a/src/vlib/linux/vfio.c b/src/vlib/linux/vfio.c
index 1ed99ceee55..33de135965b 100644
--- a/src/vlib/linux/vfio.c
+++ b/src/vlib/linux/vfio.c
@@ -246,6 +246,62 @@ linux_vfio_init (vlib_main_t * vm)
return 0;
}
+u8 *
+format_vfio_region_info (u8 * s, va_list * args)
+{
+ struct vfio_region_info *r = va_arg (*args, struct vfio_region_info *);
+
+ s = format (s, "region_info index:%u size:0x%lx offset:0x%lx flags:",
+ r->index, r->size, r->offset);
+
+ if (r->flags & VFIO_REGION_INFO_FLAG_READ)
+ s = format (s, " rd");
+
+ if (r->flags & VFIO_REGION_INFO_FLAG_WRITE)
+ s = format (s, " wr");
+
+ if (r->flags & VFIO_REGION_INFO_FLAG_MMAP)
+ s = format (s, " mmap");
+
+#ifdef VFIO_REGION_INFO_FLAG_CAPS
+ if (r->flags & VFIO_REGION_INFO_FLAG_CAPS)
+ s = format (s, " caps");
+#endif
+
+ s = format (s, " (0x%x)", r->flags);
+
+#ifdef VFIO_REGION_INFO_FLAG_CAPS
+ u32 cap_offset;
+
+ if ((r->flags & VFIO_REGION_INFO_FLAG_CAPS) == 0)
+ return s;
+
+ s = format (s, "\n caps:");
+ cap_offset = r->cap_offset;
+
+ do
+ {
+ struct vfio_info_cap_header *cap = (void *) r + cap_offset;
+#ifdef VFIO_REGION_INFO_CAP_SPARSE_MMAP
+ if (cap->id == VFIO_REGION_INFO_CAP_SPARSE_MMAP)
+ s = format (s, " sparse-mmap");
+#endif
+#ifdef VFIO_REGION_INFO_CAP_TYPE
+ if (cap->id == VFIO_REGION_INFO_CAP_TYPE)
+ s = format (s, " type");
+#endif
+#ifdef VFIO_REGION_INFO_CAP_MSIX_MAPPABLE
+ if (cap->id == VFIO_REGION_INFO_CAP_MSIX_MAPPABLE)
+ s = format (s, " msix-mappable");
+#endif
+ cap_offset = cap->next;
+ }
+ while (cap_offset);
+#endif
+
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/vlib/linux/vfio.h b/src/vlib/linux/vfio.h
index c1d815664c9..fe4f0f75346 100644
--- a/src/vlib/linux/vfio.h
+++ b/src/vlib/linux/vfio.h
@@ -49,6 +49,8 @@ clib_error_t *vfio_map_physmem_page (vlib_main_t * vm, void *addr);
clib_error_t *linux_vfio_group_get_device_fd (vlib_pci_addr_t * addr,
int *fd, int *is_noiommu);
+format_function_t format_vfio_region_info;
+
#endif /* included_vlib_linux_vfio_h */