nic_uio: allow to bind any device

[dpdk.git] / lib / librte_eal / bsdapp / nic_uio / nic_uio.c

diff --git a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c
index ce97dfc..99a4975 100644 (file)
--- a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c
+++ b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c
@@ -1,13 +1,13 @@
 /* -
  *   BSD LICENSE
- * 
+ *
  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   All rights reserved.
- * 
+ *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
  *   are met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above copyright
@@ -17,7 +17,7 @@
  *     * Neither the name of Intel Corporation nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
- * 
+ *
  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/bus.h> /* structs, prototypes for pci bus stuff and DEVMETHOD */
 #include <sys/rman.h>
 #include <sys/systm.h>
+#include <sys/rwlock.h>
 #include <sys/proc.h>
 
 #include <machine/bus.h>
@@ -54,6 +55,9 @@ __FBSDID("$FreeBSD$");
 
 #define MAX_BARS (PCIR_MAX_BAR_0 + 1)
 
+#define MAX_DETACHED_DEVICES   128
+static device_t detached_devices[MAX_DETACHED_DEVICES] = {};
+static int num_detached = 0;
 
 struct nic_uio_softc {
        device_t        dev_t;
@@ -102,20 +106,6 @@ struct pci_bdf {
        uint32_t function;
 };
 
-
-#define RTE_PCI_DEV_ID_DECL_EM(vend, dev)      {vend, dev},
-#define RTE_PCI_DEV_ID_DECL_IGB(vend, dev)     {vend, dev},
-#define RTE_PCI_DEV_ID_DECL_IGBVF(vend, dev)   {vend, dev},
-#define RTE_PCI_DEV_ID_DECL_IXGBE(vend, dev)   {vend, dev},
-#define RTE_PCI_DEV_ID_DECL_IXGBEVF(vend, dev) {vend, dev},
-#define RTE_PCI_DEV_ID_DECL_VIRTIO(vend, dev)  {vend, dev},
-
-const struct device devices[] = {
-#include <rte_pci_dev_ids.h>
-};
-#define NUM_DEVICES (sizeof(devices)/sizeof(devices[0]))
-
-
 static devclass_t nic_uio_devclass;
 
 DEFINE_CLASS_0(nic_uio, nic_uio_driver, nic_uio_methods, sizeof(struct nic_uio_softc));
@@ -126,7 +116,7 @@ nic_uio_mmap(struct cdev *cdev, vm_ooffset_t offset, vm_paddr_t *paddr,
                int prot, vm_memattr_t *memattr)
 {
        *paddr = offset;
-       return (0);
+       return 0;
 }
 
 static int
@@ -171,13 +161,13 @@ nic_uio_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size,
 
 
 int
-nic_uio_open(struct cdev *dev, int oflags, int devtype, d_thread_t *td)
+nic_uio_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
 {
        return 0;
 }
 
 int
-nic_uio_close(struct cdev *dev, int fflag, int devtype, d_thread_t *td)
+nic_uio_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
 {
        return 0;
 }
@@ -186,16 +176,19 @@ static int
 nic_uio_probe (device_t dev)
 {
        int i;
-
-       for (i = 0; i < NUM_DEVICES; i++)
-               if (pci_get_vendor(dev) == devices[i].vend &&
-                       pci_get_device(dev) == devices[i].dev) {
-
-                       device_set_desc(dev, "Intel(R) DPDK PCI Device");
-                       return (BUS_PROBE_SPECIFIC);
+       unsigned int bus = pci_get_bus(dev);
+       unsigned int device = pci_get_slot(dev);
+       unsigned int function = pci_get_function(dev);
+
+       for (i = 0; i < num_detached; i++)
+               if (bus == pci_get_bus(detached_devices[i]) &&
+                   device == pci_get_slot(detached_devices[i]) &&
+                   function == pci_get_function(detached_devices[i])) {
+                       device_set_desc(dev, "DPDK PCI Device");
+                       return BUS_PROBE_SPECIFIC;
                }
 
-       return (ENXIO);
+       return ENXIO;
 }
 
 static int
@@ -234,7 +227,7 @@ nic_uio_detach(device_t dev)
                        if (PCI_BAR_IO(pci_read_config(dev, sc->bar_id[i], 4)))
                                bus_release_resource(dev, SYS_RES_IOPORT, sc->bar_id[i],
                                                sc->bar_res[i]);
-                       else 
+                       else
                                bus_release_resource(dev, SYS_RES_MEMORY, sc->bar_id[i],
                                                sc->bar_res[i]);
                }
@@ -248,7 +241,6 @@ static void
 nic_uio_load(void)
 {
        uint32_t bus, device, function;
-       int i;
        device_t dev;
        char bdf_str[256];
        char *token, *remaining;
@@ -284,23 +276,41 @@ nic_uio_load(void)
                function = strtol(token, NULL, 10);
 
                dev = pci_find_bsf(bus, device, function);
-               if (dev != NULL)
-                       for (i = 0; i < NUM_DEVICES; i++) 
-                               if (pci_get_vendor(dev) == devices[i].vend &&
-                                               pci_get_device(dev) == devices[i].dev)
-                                                       device_detach(dev);
+               if (dev == NULL)
+                       continue;
+
+               if (num_detached < MAX_DETACHED_DEVICES) {
+                       printf("nic_uio_load: detaching and storing dev=%p\n",
+                              dev);
+                       detached_devices[num_detached++] = dev;
+               } else {
+                       printf("nic_uio_load: reached MAX_DETACHED_DEVICES=%d. dev=%p won't be reattached\n",
+                              MAX_DETACHED_DEVICES, dev);
+               }
+               device_detach(dev);
        }
 }
 
 static void
 nic_uio_unload(void)
 {
+       int i;
+       printf("nic_uio_unload: entered...\n");
+
+       for (i = 0; i < num_detached; i++) {
+               printf("nic_uio_unload: calling to device_probe_and_attach for dev=%p...\n",
+                       detached_devices[i]);
+               device_probe_and_attach(detached_devices[i]);
+               printf("nic_uio_unload: done.\n");
+       }
+
+       printf("nic_uio_unload: leaving...\n");
 }
 
 static int
 nic_uio_shutdown(void)
 {
-       return (0);
+       return 0;
 }
 
 static int
@@ -321,5 +331,5 @@ nic_uio_modevent(module_t mod, int type, void *arg)
                break;
        }
 
-       return (0);
+       return 0;
 }