1 /* Bluetooth HCI driver model support. */ 2 3 #include <linux/config.h> 4 #include <linux/kernel.h> 5 #include <linux/init.h> 6 7 #include <net/bluetooth/bluetooth.h> 8 #include <net/bluetooth/hci_core.h> 9 10 #ifndef CONFIG_BT_HCI_CORE_DEBUG 11 #undef BT_DBG 12 #define BT_DBG(D...) 13 #endif 14 15 static ssize_t show_name(struct class_device *cdev, char *buf) 16 { 17 struct hci_dev *hdev = class_get_devdata(cdev); 18 return sprintf(buf, "%s\n", hdev->name); 19 } 20 21 static ssize_t show_type(struct class_device *cdev, char *buf) 22 { 23 struct hci_dev *hdev = class_get_devdata(cdev); 24 return sprintf(buf, "%d\n", hdev->type); 25 } 26 27 static ssize_t show_address(struct class_device *cdev, char *buf) 28 { 29 struct hci_dev *hdev = class_get_devdata(cdev); 30 bdaddr_t bdaddr; 31 baswap(&bdaddr, &hdev->bdaddr); 32 return sprintf(buf, "%s\n", batostr(&bdaddr)); 33 } 34 35 static ssize_t show_flags(struct class_device *cdev, char *buf) 36 { 37 struct hci_dev *hdev = class_get_devdata(cdev); 38 return sprintf(buf, "0x%lx\n", hdev->flags); 39 } 40 41 static ssize_t show_inquiry_cache(struct class_device *cdev, char *buf) 42 { 43 struct hci_dev *hdev = class_get_devdata(cdev); 44 struct inquiry_cache *cache = &hdev->inq_cache; 45 struct inquiry_entry *e; 46 int n = 0; 47 48 hci_dev_lock_bh(hdev); 49 50 for (e = cache->list; e; e = e->next) { 51 struct inquiry_data *data = &e->data; 52 bdaddr_t bdaddr; 53 baswap(&bdaddr, &data->bdaddr); 54 n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %u\n", 55 batostr(&bdaddr), 56 data->pscan_rep_mode, data->pscan_period_mode, data->pscan_mode, 57 data->dev_class[2], data->dev_class[1], data->dev_class[0], 58 __le16_to_cpu(data->clock_offset), data->rssi, e->timestamp); 59 } 60 61 hci_dev_unlock_bh(hdev); 62 return n; 63 } 64 65 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 66 static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL); 67 static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL); 68 static CLASS_DEVICE_ATTR(flags, S_IRUGO, show_flags, NULL); 69 static CLASS_DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL); 70 71 static struct class_device_attribute *bt_attrs[] = { 72 &class_device_attr_name, 73 &class_device_attr_type, 74 &class_device_attr_address, 75 &class_device_attr_flags, 76 &class_device_attr_inquiry_cache, 77 NULL 78 }; 79 80 #ifdef CONFIG_HOTPLUG 81 static int bt_hotplug(struct class_device *cdev, char **envp, int num_envp, char *buf, int size) 82 { 83 struct hci_dev *hdev = class_get_devdata(cdev); 84 int n, i = 0; 85 86 envp[i++] = buf; 87 n = snprintf(buf, size, "INTERFACE=%s", hdev->name) + 1; 88 buf += n; 89 size -= n; 90 91 if ((size <= 0) || (i >= num_envp)) 92 return -ENOMEM; 93 94 envp[i] = NULL; 95 return 0; 96 } 97 #endif 98 99 static void bt_release(struct class_device *cdev) 100 { 101 struct hci_dev *hdev = class_get_devdata(cdev); 102 103 kfree(hdev); 104 } 105 106 static struct class bt_class = { 107 .name = "bluetooth", 108 .release = bt_release, 109 #ifdef CONFIG_HOTPLUG 110 .hotplug = bt_hotplug, 111 #endif 112 }; 113 114 int hci_register_sysfs(struct hci_dev *hdev) 115 { 116 struct class_device *cdev = &hdev->class_dev; 117 unsigned int i; 118 int err; 119 120 BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); 121 122 cdev->class = &bt_class; 123 class_set_devdata(cdev, hdev); 124 125 strlcpy(cdev->class_id, hdev->name, BUS_ID_SIZE); 126 err = class_device_register(cdev); 127 if (err < 0) 128 return err; 129 130 for (i = 0; bt_attrs[i]; i++) 131 class_device_create_file(cdev, bt_attrs[i]); 132 133 return 0; 134 } 135 136 void hci_unregister_sysfs(struct hci_dev *hdev) 137 { 138 struct class_device * cdev = &hdev->class_dev; 139 140 BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type); 141 142 class_device_del(cdev); 143 } 144 145 int __init bt_sysfs_init(void) 146 { 147 return class_register(&bt_class); 148 } 149 150 void __exit bt_sysfs_cleanup(void) 151 { 152 class_unregister(&bt_class); 153 } 154