Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia |
| 3 | * |
| 4 | * Authors: |
| 5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> |
| 6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the |
| 20 | * Free Software Foundation, Inc., |
| 21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 22 | */ |
| 23 | |
| 24 | #ifndef __NET_NFC_H |
| 25 | #define __NET_NFC_H |
| 26 | |
Ilan Elias | d5a2ca6 | 2012-01-17 11:06:43 +0200 | [diff] [blame] | 27 | #include <linux/nfc.h> |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 28 | #include <linux/device.h> |
| 29 | #include <linux/skbuff.h> |
| 30 | |
| 31 | #define nfc_dev_info(dev, fmt, arg...) dev_info((dev), "NFC: " fmt "\n", ## arg) |
| 32 | #define nfc_dev_err(dev, fmt, arg...) dev_err((dev), "NFC: " fmt "\n", ## arg) |
| 33 | #define nfc_dev_dbg(dev, fmt, arg...) dev_dbg((dev), fmt "\n", ## arg) |
| 34 | |
| 35 | struct nfc_dev; |
| 36 | |
| 37 | /** |
| 38 | * data_exchange_cb_t - Definition of nfc_data_exchange callback |
| 39 | * |
| 40 | * @context: nfc_data_exchange cb_context parameter |
| 41 | * @skb: response data |
| 42 | * @err: If an error has occurred during data exchange, it is the |
| 43 | * error number. Zero means no error. |
| 44 | * |
| 45 | * When a rx or tx package is lost or corrupted or the target gets out |
| 46 | * of the operating field, err is -EIO. |
| 47 | */ |
| 48 | typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb, |
| 49 | int err); |
| 50 | |
Eric Lapuyade | 9009943 | 2012-05-07 12:31:13 +0200 | [diff] [blame] | 51 | struct nfc_target; |
| 52 | |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 53 | struct nfc_ops { |
Ilan Elias | 8b3fe7b | 2011-09-18 11:19:33 +0300 | [diff] [blame] | 54 | int (*dev_up)(struct nfc_dev *dev); |
| 55 | int (*dev_down)(struct nfc_dev *dev); |
Samuel Ortiz | fe7c580 | 2012-05-15 15:57:06 +0200 | [diff] [blame] | 56 | int (*start_poll)(struct nfc_dev *dev, |
| 57 | u32 im_protocols, u32 tm_protocols); |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 58 | void (*stop_poll)(struct nfc_dev *dev); |
Eric Lapuyade | 9009943 | 2012-05-07 12:31:13 +0200 | [diff] [blame] | 59 | int (*dep_link_up)(struct nfc_dev *dev, struct nfc_target *target, |
| 60 | u8 comm_mode, u8 *gb, size_t gb_len); |
Samuel Ortiz | 1ed28f6 | 2011-12-14 16:43:09 +0100 | [diff] [blame] | 61 | int (*dep_link_down)(struct nfc_dev *dev); |
Eric Lapuyade | 9009943 | 2012-05-07 12:31:13 +0200 | [diff] [blame] | 62 | int (*activate_target)(struct nfc_dev *dev, struct nfc_target *target, |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 63 | u32 protocol); |
Eric Lapuyade | 9009943 | 2012-05-07 12:31:13 +0200 | [diff] [blame] | 64 | void (*deactivate_target)(struct nfc_dev *dev, |
| 65 | struct nfc_target *target); |
Samuel Ortiz | be9ae4c | 2012-05-16 15:55:48 +0200 | [diff] [blame] | 66 | int (*im_transceive)(struct nfc_dev *dev, struct nfc_target *target, |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 67 | struct sk_buff *skb, data_exchange_cb_t cb, |
| 68 | void *cb_context); |
Samuel Ortiz | be9ae4c | 2012-05-16 15:55:48 +0200 | [diff] [blame] | 69 | int (*tm_send)(struct nfc_dev *dev, struct sk_buff *skb); |
Eric Lapuyade | 9009943 | 2012-05-07 12:31:13 +0200 | [diff] [blame] | 70 | int (*check_presence)(struct nfc_dev *dev, struct nfc_target *target); |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 71 | }; |
| 72 | |
Samuel Ortiz | 1ed28f6 | 2011-12-14 16:43:09 +0100 | [diff] [blame] | 73 | #define NFC_TARGET_IDX_ANY -1 |
| 74 | #define NFC_MAX_GT_LEN 48 |
| 75 | |
Lauro Ramos Venancio | 4d12b8b | 2011-07-01 19:31:34 -0300 | [diff] [blame] | 76 | struct nfc_target { |
| 77 | u32 idx; |
| 78 | u32 supported_protocols; |
| 79 | u16 sens_res; |
| 80 | u8 sel_res; |
Ilan Elias | 288e071 | 2011-12-22 11:51:54 +0200 | [diff] [blame] | 81 | u8 nfcid1_len; |
Ilan Elias | d5a2ca6 | 2012-01-17 11:06:43 +0200 | [diff] [blame] | 82 | u8 nfcid1[NFC_NFCID1_MAXSIZE]; |
| 83 | u8 sensb_res_len; |
| 84 | u8 sensb_res[NFC_SENSB_RES_MAXSIZE]; |
| 85 | u8 sensf_res_len; |
| 86 | u8 sensf_res[NFC_SENSF_RES_MAXSIZE]; |
Eric Lapuyade | 8b8d2e0 | 2012-04-10 19:43:06 +0200 | [diff] [blame] | 87 | u8 hci_reader_gate; |
Samuel Ortiz | c4fbb65 | 2012-04-10 19:43:09 +0200 | [diff] [blame] | 88 | u8 logical_idx; |
Lauro Ramos Venancio | 4d12b8b | 2011-07-01 19:31:34 -0300 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | struct nfc_genl_data { |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame^] | 92 | u32 poll_req_portid; |
Lauro Ramos Venancio | 4d12b8b | 2011-07-01 19:31:34 -0300 | [diff] [blame] | 93 | struct mutex genl_data_mutex; |
| 94 | }; |
| 95 | |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 96 | struct nfc_dev { |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 97 | unsigned int idx; |
Eric Lapuyade | 01ae0ee | 2012-04-10 19:43:10 +0200 | [diff] [blame] | 98 | u32 target_next_idx; |
Lauro Ramos Venancio | 4d12b8b | 2011-07-01 19:31:34 -0300 | [diff] [blame] | 99 | struct nfc_target *targets; |
| 100 | int n_targets; |
| 101 | int targets_generation; |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 102 | struct device dev; |
Ilan Elias | 8b3fe7b | 2011-09-18 11:19:33 +0300 | [diff] [blame] | 103 | bool dev_up; |
Samuel Ortiz | f212ad5 | 2012-05-31 00:02:26 +0200 | [diff] [blame] | 104 | u8 rf_mode; |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 105 | bool polling; |
Eric Lapuyade | 9009943 | 2012-05-07 12:31:13 +0200 | [diff] [blame] | 106 | struct nfc_target *active_target; |
Samuel Ortiz | 1ed28f6 | 2011-12-14 16:43:09 +0100 | [diff] [blame] | 107 | bool dep_link_up; |
Lauro Ramos Venancio | 4d12b8b | 2011-07-01 19:31:34 -0300 | [diff] [blame] | 108 | struct nfc_genl_data genl_data; |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 109 | u32 supported_protocols; |
| 110 | |
Samuel Ortiz | e875304 | 2011-08-19 15:47:11 +0200 | [diff] [blame] | 111 | int tx_headroom; |
| 112 | int tx_tailroom; |
| 113 | |
Eric Lapuyade | c8d56ae | 2012-04-10 19:43:12 +0200 | [diff] [blame] | 114 | struct timer_list check_pres_timer; |
| 115 | struct workqueue_struct *check_pres_wq; |
| 116 | struct work_struct check_pres_work; |
| 117 | |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 118 | struct nfc_ops *ops; |
| 119 | }; |
| 120 | #define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev) |
| 121 | |
| 122 | extern struct class nfc_class; |
| 123 | |
| 124 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 125 | u32 supported_protocols, |
| 126 | int tx_headroom, |
| 127 | int tx_tailroom); |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 128 | |
| 129 | /** |
| 130 | * nfc_free_device - free nfc device |
| 131 | * |
| 132 | * @dev: The nfc device to free |
| 133 | */ |
| 134 | static inline void nfc_free_device(struct nfc_dev *dev) |
| 135 | { |
| 136 | put_device(&dev->dev); |
| 137 | } |
| 138 | |
| 139 | int nfc_register_device(struct nfc_dev *dev); |
| 140 | |
| 141 | void nfc_unregister_device(struct nfc_dev *dev); |
| 142 | |
| 143 | /** |
| 144 | * nfc_set_parent_dev - set the parent device |
| 145 | * |
| 146 | * @nfc_dev: The nfc device whose parent is being set |
| 147 | * @dev: The parent device |
| 148 | */ |
| 149 | static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev, |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 150 | struct device *dev) |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 151 | { |
| 152 | nfc_dev->dev.parent = dev; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * nfc_set_drvdata - set driver specifc data |
| 157 | * |
| 158 | * @dev: The nfc device |
| 159 | * @data: Pointer to driver specifc data |
| 160 | */ |
| 161 | static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data) |
| 162 | { |
| 163 | dev_set_drvdata(&dev->dev, data); |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * nfc_get_drvdata - get driver specifc data |
| 168 | * |
| 169 | * @dev: The nfc device |
| 170 | */ |
| 171 | static inline void *nfc_get_drvdata(struct nfc_dev *dev) |
| 172 | { |
| 173 | return dev_get_drvdata(&dev->dev); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * nfc_device_name - get the nfc device name |
| 178 | * |
| 179 | * @dev: The nfc device whose name to return |
| 180 | */ |
| 181 | static inline const char *nfc_device_name(struct nfc_dev *dev) |
| 182 | { |
| 183 | return dev_name(&dev->dev); |
| 184 | } |
| 185 | |
Samuel Ortiz | 7c7cd3b | 2011-12-14 16:43:06 +0100 | [diff] [blame] | 186 | struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 187 | unsigned int flags, unsigned int size, |
| 188 | unsigned int *err); |
Samuel Ortiz | 7c7cd3b | 2011-12-14 16:43:06 +0100 | [diff] [blame] | 189 | struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp); |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 190 | |
Samuel Ortiz | 541d920 | 2011-12-14 16:43:10 +0100 | [diff] [blame] | 191 | int nfc_set_remote_general_bytes(struct nfc_dev *dev, |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 192 | u8 *gt, u8 gt_len); |
Samuel Ortiz | ab73b75 | 2012-04-10 12:51:52 +0200 | [diff] [blame] | 193 | u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len); |
Samuel Ortiz | 541d920 | 2011-12-14 16:43:10 +0100 | [diff] [blame] | 194 | |
Samuel Ortiz | 0a40acb | 2012-03-05 01:03:53 +0100 | [diff] [blame] | 195 | int nfc_targets_found(struct nfc_dev *dev, |
| 196 | struct nfc_target *targets, int ntargets); |
Eric Lapuyade | e1da0ef | 2012-04-10 19:43:05 +0200 | [diff] [blame] | 197 | int nfc_target_lost(struct nfc_dev *dev, u32 target_idx); |
Lauro Ramos Venancio | 4d12b8b | 2011-07-01 19:31:34 -0300 | [diff] [blame] | 198 | |
Samuel Ortiz | 1ed28f6 | 2011-12-14 16:43:09 +0100 | [diff] [blame] | 199 | int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, |
| 200 | u8 comm_mode, u8 rf_mode); |
| 201 | |
Samuel Ortiz | fc40a8c | 2012-06-01 13:21:13 +0200 | [diff] [blame] | 202 | int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode, |
| 203 | u8 *gb, size_t gb_len); |
| 204 | int nfc_tm_deactivated(struct nfc_dev *dev); |
Samuel Ortiz | 73167ce | 2012-05-31 00:05:50 +0200 | [diff] [blame] | 205 | int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb); |
Samuel Ortiz | fc40a8c | 2012-06-01 13:21:13 +0200 | [diff] [blame] | 206 | |
Eric Lapuyade | 456411c | 2012-06-11 13:49:51 +0200 | [diff] [blame] | 207 | void nfc_driver_failure(struct nfc_dev *dev, int err); |
| 208 | |
Lauro Ramos Venancio | 3e256b8 | 2011-07-01 19:31:33 -0300 | [diff] [blame] | 209 | #endif /* __NET_NFC_H */ |