xen: fix build
[dpdk.git] / lib / librte_eal / common / eal_common_pci.c
index 81b8fd6..7248c38 100644 (file)
 struct pci_driver_list pci_driver_list;
 struct pci_device_list pci_device_list;
 
+#define SYSFS_PCI_DEVICES "/sys/bus/pci/devices"
+
+const char *pci_get_sysfs_path(void)
+{
+       const char *path = NULL;
+
+       path = getenv("SYSFS_PCI_DEVICES");
+       if (path == NULL)
+               return SYSFS_PCI_DEVICES;
+
+       return path;
+}
+
 static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev)
 {
        struct rte_devargs *devargs;
@@ -137,6 +150,128 @@ pci_unmap_resource(void *requested_addr, size_t size)
                                requested_addr);
 }
 
+/*
+ * If vendor/device ID match, call the devinit() function of the
+ * driver.
+ */
+static int
+rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev)
+{
+       int ret;
+       const struct rte_pci_id *id_table;
+
+       for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
+
+               /* check if device's identifiers match the driver's ones */
+               if (id_table->vendor_id != dev->id.vendor_id &&
+                               id_table->vendor_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->device_id != dev->id.device_id &&
+                               id_table->device_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->subsystem_vendor_id != dev->id.subsystem_vendor_id &&
+                               id_table->subsystem_vendor_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->subsystem_device_id != dev->id.subsystem_device_id &&
+                               id_table->subsystem_device_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->class_id != dev->id.class_id &&
+                               id_table->class_id != RTE_CLASS_ANY_ID)
+                       continue;
+
+               struct rte_pci_addr *loc = &dev->addr;
+
+               RTE_LOG(INFO, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+                               loc->domain, loc->bus, loc->devid, loc->function,
+                               dev->numa_node);
+
+               /* no initialization when blacklisted, return without error */
+               if (dev->devargs != NULL &&
+                       dev->devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
+                       RTE_LOG(INFO, EAL, "  Device is blacklisted, not initializing\n");
+                       return 1;
+               }
+
+               RTE_LOG(INFO, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
+                               dev->id.device_id, dr->name);
+
+               if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
+                       /* map resources for devices that use igb_uio */
+                       ret = rte_eal_pci_map_device(dev);
+                       if (ret != 0)
+                               return ret;
+               } else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND &&
+                               rte_eal_process_type() == RTE_PROC_PRIMARY) {
+                       /* unbind current driver */
+                       if (pci_unbind_kernel_driver(dev) < 0)
+                               return -1;
+               }
+
+               /* reference driver structure */
+               dev->driver = dr;
+
+               /* call the driver devinit() function */
+               return dr->devinit(dr, dev);
+       }
+       /* return positive value if driver doesn't support this device */
+       return 1;
+}
+
+/*
+ * If vendor/device ID match, call the devuninit() function of the
+ * driver.
+ */
+static int
+rte_eal_pci_detach_dev(struct rte_pci_driver *dr,
+               struct rte_pci_device *dev)
+{
+       const struct rte_pci_id *id_table;
+
+       if ((dr == NULL) || (dev == NULL))
+               return -EINVAL;
+
+       for (id_table = dr->id_table; id_table->vendor_id != 0; id_table++) {
+
+               /* check if device's identifiers match the driver's ones */
+               if (id_table->vendor_id != dev->id.vendor_id &&
+                               id_table->vendor_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->device_id != dev->id.device_id &&
+                               id_table->device_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->subsystem_vendor_id != dev->id.subsystem_vendor_id &&
+                               id_table->subsystem_vendor_id != PCI_ANY_ID)
+                       continue;
+               if (id_table->subsystem_device_id != dev->id.subsystem_device_id &&
+                               id_table->subsystem_device_id != PCI_ANY_ID)
+                       continue;
+
+               struct rte_pci_addr *loc = &dev->addr;
+
+               RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+                               loc->domain, loc->bus, loc->devid,
+                               loc->function, dev->numa_node);
+
+               RTE_LOG(DEBUG, EAL, "  remove driver: %x:%x %s\n", dev->id.vendor_id,
+                               dev->id.device_id, dr->name);
+
+               if (dr->devuninit && (dr->devuninit(dev) < 0))
+                       return -1;      /* negative value is an error */
+
+               /* clear driver structure */
+               dev->driver = NULL;
+
+               if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING)
+                       /* unmap resources for devices that use igb_uio */
+                       rte_eal_pci_unmap_device(dev);
+
+               return 0;
+       }
+
+       /* return positive value if driver doesn't support this device */
+       return 1;
+}
+
 /*
  * If vendor/device ID match, call the devinit() function of all
  * registered driver for the given device. Return -1 if initialization
@@ -157,21 +292,20 @@ pci_probe_all_drivers(struct rte_pci_device *dev)
                        /* negative value is an error */
                        return -1;
                if (rc > 0)
-                       /* positive value means driver not found */
+                       /* positive value means driver doesn't support it */
                        continue;
                return 0;
        }
        return 1;
 }
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 /*
  * If vendor/device ID match, call the devuninit() function of all
  * registered driver for the given device. Return -1 if initialization
  * failed, return 1 if no driver is found for this device.
  */
 static int
-pci_close_all_drivers(struct rte_pci_device *dev)
+pci_detach_all_drivers(struct rte_pci_device *dev)
 {
        struct rte_pci_driver *dr = NULL;
        int rc = 0;
@@ -180,12 +314,12 @@ pci_close_all_drivers(struct rte_pci_device *dev)
                return -1;
 
        TAILQ_FOREACH(dr, &pci_driver_list, next) {
-               rc = rte_eal_pci_close_one_driver(dr, dev);
+               rc = rte_eal_pci_detach_dev(dr, dev);
                if (rc < 0)
                        /* negative value is an error */
                        return -1;
                if (rc > 0)
-                       /* positive value means driver not found */
+                       /* positive value means driver doesn't support it */
                        continue;
                return 0;
        }
@@ -224,11 +358,10 @@ err_return:
 }
 
 /*
- * Find the pci device specified by pci address, then invoke close function of
- * the driver of the devive.
+ * Detach device specified by its pci address.
  */
 int
-rte_eal_pci_close_one(const struct rte_pci_addr *addr)
+rte_eal_pci_detach(const struct rte_pci_addr *addr)
 {
        struct rte_pci_device *dev = NULL;
        int ret = 0;
@@ -240,7 +373,7 @@ rte_eal_pci_close_one(const struct rte_pci_addr *addr)
                if (rte_eal_compare_pci_addr(&dev->addr, addr))
                        continue;
 
-               ret = pci_close_all_drivers(dev);
+               ret = pci_detach_all_drivers(dev);
                if (ret < 0)
                        goto err_return;
 
@@ -255,7 +388,6 @@ err_return:
                        dev->addr.devid, dev->addr.function);
        return -1;
 }
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /*
  * Scan the content of the PCI bus, and call the devinit() function for