vfio: initialize out of the PCI subsystem

The VFIO does not depend on the PCI anymore so it can be initialized out of
the PCI subsystem.

Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 543ef86..606b777 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -82,6 +82,7 @@
 #include "eal_filesystem.h"
 #include "eal_hugepages.h"
 #include "eal_options.h"
+#include "eal_vfio.h"
 
 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
 
@@ -701,6 +702,31 @@ rte_eal_iopl_init(void)
        return 0;
 }
 
+#ifdef VFIO_PRESENT
+static int rte_eal_vfio_setup(void)
+{
+       if (internal_config.no_pci)
+               return 0;
+
+       pci_vfio_enable();
+
+       if (pci_vfio_is_enabled()) {
+
+               /* if we are primary process, create a thread to communicate with
+                * secondary processes. the thread will use a socket to wait for
+                * requests from secondary process to send open file descriptors,
+                * because VFIO does not allow multiple open descriptors on a group or
+                * VFIO container.
+                */
+               if (internal_config.process_type == RTE_PROC_PRIMARY &&
+                               vfio_mp_sync_setup() < 0)
+                       return -1;
+       }
+
+       return 0;
+}
+#endif
+
 /* Launch threads, called at application init(). */
 int
 rte_eal_init(int argc, char **argv)
@@ -764,6 +790,11 @@ rte_eal_init(int argc, char **argv)
        if (rte_eal_pci_init() < 0)
                rte_panic("Cannot init PCI\n");
 
+#ifdef VFIO_PRESENT
+       if (rte_eal_vfio_setup() < 0)
+               rte_panic("Cannot init VFIO\n");
+#endif
+
 #ifdef RTE_LIBRTE_IVSHMEM
        if (rte_eal_ivshmem_init() < 0)
                rte_panic("Cannot init IVSHMEM\n");

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index d0a6481..cd9de7c 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -754,21 +754,6 @@ rte_eal_pci_init(void)
                RTE_LOG(ERR, EAL, "%s(): Cannot scan PCI bus\n", __func__);
                return -1;
        }
-#ifdef VFIO_PRESENT
-       pci_vfio_enable();
-
-       if (pci_vfio_is_enabled()) {
-
-               /* if we are primary process, create a thread to communicate with
-                * secondary processes. the thread will use a socket to wait for
-                * requests from secondary process to send open file descriptors,
-                * because VFIO does not allow multiple open descriptors on a group or
-                * VFIO container.
-                */
-               if (internal_config.process_type == RTE_PROC_PRIMARY &&
-                               vfio_mp_sync_setup() < 0)
-                       return -1;
-       }
-#endif
+
        return 0;
 }

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_init.h b/lib/librte_eal/linuxapp/eal/eal_pci_init.h
index 62c337f..6a960d1 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_pci_init.h
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_init.h
@@ -74,9 +74,6 @@ int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
 
 #ifdef VFIO_PRESENT
 
-int pci_vfio_enable(void);
-int pci_vfio_is_enabled(void);
-
 /* access config space */
 int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
                         void *buf, size_t len, off_t offs);

diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.h b/lib/librte_eal/linuxapp/eal/eal_vfio.h
index 3f549b0..29f7f3e 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.h
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.h
@@ -143,6 +143,9 @@ int vfio_setup_device(const char *sysfs_base, const char *dev_addr,
 int vfio_enable(const char *modname);
 int vfio_is_enabled(const char *modname);
 
+int pci_vfio_enable(void);
+int pci_vfio_is_enabled(void);
+
 int vfio_mp_sync_setup(void);
 
 #define SOCKET_REQ_CONTAINER 0x100