diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
| commit | 863981e96738983919de841ec669e157e6bdaeb0 (patch) | |
| tree | d6d89a12e7eb8017837c057935a2271290907f76 /drivers/nfc/pn533.c | |
| parent | 8dec7c70575785729a6a9e6719a955e9c545bcab (diff) | |
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'drivers/nfc/pn533.c')
| -rw-r--r-- | drivers/nfc/pn533.c | 3313 |
1 files changed, 0 insertions, 3313 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c deleted file mode 100644 index bb3d5ea98..000000000 --- a/drivers/nfc/pn533.c +++ /dev/null @@ -1,3313 +0,0 @@ -/* - * Copyright (C) 2011 Instituto Nokia de Tecnologia - * Copyright (C) 2012-2013 Tieto Poland - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/usb.h> -#include <linux/nfc.h> -#include <linux/netdevice.h> -#include <net/nfc/nfc.h> - -#define VERSION "0.2" - -#define PN533_VENDOR_ID 0x4CC -#define PN533_PRODUCT_ID 0x2533 - -#define SCM_VENDOR_ID 0x4E6 -#define SCL3711_PRODUCT_ID 0x5591 - -#define SONY_VENDOR_ID 0x054c -#define PASORI_PRODUCT_ID 0x02e1 - -#define ACS_VENDOR_ID 0x072f -#define ACR122U_PRODUCT_ID 0x2200 - -#define PN533_DEVICE_STD 0x1 -#define PN533_DEVICE_PASORI 0x2 -#define PN533_DEVICE_ACR122U 0x3 - -#define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ - NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ - NFC_PROTO_NFC_DEP_MASK |\ - NFC_PROTO_ISO14443_B_MASK) - -#define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ - NFC_PROTO_MIFARE_MASK | \ - NFC_PROTO_FELICA_MASK | \ - NFC_PROTO_ISO14443_MASK | \ - NFC_PROTO_NFC_DEP_MASK) - -static const struct usb_device_id pn533_table[] = { - { USB_DEVICE(PN533_VENDOR_ID, PN533_PRODUCT_ID), - .driver_info = PN533_DEVICE_STD }, - { USB_DEVICE(SCM_VENDOR_ID, SCL3711_PRODUCT_ID), - .driver_info = PN533_DEVICE_STD }, - { USB_DEVICE(SONY_VENDOR_ID, PASORI_PRODUCT_ID), - .driver_info = PN533_DEVICE_PASORI }, - { USB_DEVICE(ACS_VENDOR_ID, ACR122U_PRODUCT_ID), - .driver_info = PN533_DEVICE_ACR122U }, - { } -}; -MODULE_DEVICE_TABLE(usb, pn533_table); - -/* How much time we spend listening for initiators */ -#define PN533_LISTEN_TIME 2 -/* Delay between each poll frame (ms) */ -#define PN533_POLL_INTERVAL 10 - -/* Standard pn533 frame definitions (standard and extended)*/ -#define PN533_STD_FRAME_HEADER_LEN (sizeof(struct pn533_std_frame) \ - + 2) /* data[0] TFI, data[1] CC */ -#define PN533_STD_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ - -#define PN533_EXT_FRAME_HEADER_LEN (sizeof(struct pn533_ext_frame) \ - + 2) /* data[0] TFI, data[1] CC */ - -#define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 -#define PN533_CMD_DATAFRAME_MAXLEN 240 /* max data length (send) */ - -/* - * Max extended frame payload len, excluding TFI and CC - * which are already in PN533_FRAME_HEADER_LEN. - */ -#define PN533_STD_FRAME_MAX_PAYLOAD_LEN 263 - -#define PN533_STD_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), - Postamble (1) */ -#define PN533_STD_FRAME_CHECKSUM(f) (f->data[f->datalen]) -#define PN533_STD_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) -/* Half start code (3), LEN (4) should be 0xffff for extended frame */ -#define PN533_STD_IS_EXTENDED(hdr) ((hdr)->datalen == 0xFF \ - && (hdr)->datalen_checksum == 0xFF) -#define PN533_EXT_FRAME_CHECKSUM(f) (f->data[be16_to_cpu(f->datalen)]) - -/* start of frame */ -#define PN533_STD_FRAME_SOF 0x00FF - -/* standard frame identifier: in/out/error */ -#define PN533_STD_FRAME_IDENTIFIER(f) (f->data[0]) /* TFI */ -#define PN533_STD_FRAME_DIR_OUT 0xD4 -#define PN533_STD_FRAME_DIR_IN 0xD5 - -/* ACS ACR122 pn533 frame definitions */ -#define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \ - + 2) -#define PN533_ACR122_TX_FRAME_TAIL_LEN 0 -#define PN533_ACR122_RX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_rx_frame) \ - + 2) -#define PN533_ACR122_RX_FRAME_TAIL_LEN 2 -#define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN - -/* CCID messages types */ -#define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62 -#define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B - -#define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83 - -/* PN533 Commands */ -#define PN533_FRAME_CMD(f) (f->data[1]) - -#define PN533_CMD_GET_FIRMWARE_VERSION 0x02 -#define PN533_CMD_RF_CONFIGURATION 0x32 -#define PN533_CMD_IN_DATA_EXCHANGE 0x40 -#define PN533_CMD_IN_COMM_THRU 0x42 -#define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A -#define PN533_CMD_IN_ATR 0x50 -#define PN533_CMD_IN_RELEASE 0x52 -#define PN533_CMD_IN_JUMP_FOR_DEP 0x56 - -#define PN533_CMD_TG_INIT_AS_TARGET 0x8c -#define PN533_CMD_TG_GET_DATA 0x86 -#define PN533_CMD_TG_SET_DATA 0x8e -#define PN533_CMD_TG_SET_META_DATA 0x94 -#define PN533_CMD_UNDEF 0xff - -#define PN533_CMD_RESPONSE(cmd) (cmd + 1) - -/* PN533 Return codes */ -#define PN533_CMD_RET_MASK 0x3F -#define PN533_CMD_MI_MASK 0x40 -#define PN533_CMD_RET_SUCCESS 0x00 - -struct pn533; - -typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg, - struct sk_buff *resp); - -/* structs for pn533 commands */ - -/* PN533_CMD_GET_FIRMWARE_VERSION */ -struct pn533_fw_version { - u8 ic; - u8 ver; - u8 rev; - u8 support; -}; - -/* PN533_CMD_RF_CONFIGURATION */ -#define PN533_CFGITEM_RF_FIELD 0x01 -#define PN533_CFGITEM_TIMING 0x02 -#define PN533_CFGITEM_MAX_RETRIES 0x05 -#define PN533_CFGITEM_PASORI 0x82 - -#define PN533_CFGITEM_RF_FIELD_AUTO_RFCA 0x2 -#define PN533_CFGITEM_RF_FIELD_ON 0x1 -#define PN533_CFGITEM_RF_FIELD_OFF 0x0 - -#define PN533_CONFIG_TIMING_102 0xb -#define PN533_CONFIG_TIMING_204 0xc -#define PN533_CONFIG_TIMING_409 0xd -#define PN533_CONFIG_TIMING_819 0xe - -#define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 -#define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF - -struct pn533_config_max_retries { - u8 mx_rty_atr; - u8 mx_rty_psl; - u8 mx_rty_passive_act; -} __packed; - -struct pn533_config_timing { - u8 rfu; - u8 atr_res_timeout; - u8 dep_timeout; -} __packed; - -/* PN533_CMD_IN_LIST_PASSIVE_TARGET */ - -/* felica commands opcode */ -#define PN533_FELICA_OPC_SENSF_REQ 0 -#define PN533_FELICA_OPC_SENSF_RES 1 -/* felica SENSF_REQ parameters */ -#define PN533_FELICA_SENSF_SC_ALL 0xFFFF -#define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 -#define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 -#define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 - -/* type B initiator_data values */ -#define PN533_TYPE_B_AFI_ALL_FAMILIES 0 -#define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 -#define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 - -union pn533_cmd_poll_initdata { - struct { - u8 afi; - u8 polling_method; - } __packed type_b; - struct { - u8 opcode; - __be16 sc; - u8 rc; - u8 tsn; - } __packed felica; -}; - -/* Poll modulations */ -enum { - PN533_POLL_MOD_106KBPS_A, - PN533_POLL_MOD_212KBPS_FELICA, - PN533_POLL_MOD_424KBPS_FELICA, - PN533_POLL_MOD_106KBPS_JEWEL, - PN533_POLL_MOD_847KBPS_B, - PN533_LISTEN_MOD, - - __PN533_POLL_MOD_AFTER_LAST, -}; -#define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) - -struct pn533_poll_modulations { - struct { - u8 maxtg; - u8 brty; - union pn533_cmd_poll_initdata initiator_data; - } __packed data; - u8 len; -}; - -static const struct pn533_poll_modulations poll_mod[] = { - [PN533_POLL_MOD_106KBPS_A] = { - .data = { - .maxtg = 1, - .brty = 0, - }, - .len = 2, - }, - [PN533_POLL_MOD_212KBPS_FELICA] = { - .data = { - .maxtg = 1, - .brty = 1, - .initiator_data.felica = { - .opcode = PN533_FELICA_OPC_SENSF_REQ, - .sc = PN533_FELICA_SENSF_SC_ALL, - .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE, - .tsn = 0x03, - }, - }, - .len = 7, - }, - [PN533_POLL_MOD_424KBPS_FELICA] = { - .data = { - .maxtg = 1, - .brty = 2, - .initiator_data.felica = { - .opcode = PN533_FELICA_OPC_SENSF_REQ, - .sc = PN533_FELICA_SENSF_SC_ALL, - .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE, - .tsn = 0x03, - }, - }, - .len = 7, - }, - [PN533_POLL_MOD_106KBPS_JEWEL] = { - .data = { - .maxtg = 1, - .brty = 4, - }, - .len = 2, - }, - [PN533_POLL_MOD_847KBPS_B] = { - .data = { - .maxtg = 1, - .brty = 8, - .initiator_data.type_b = { - .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, - .polling_method = - PN533_TYPE_B_POLL_METHOD_TIMESLOT, - }, - }, - .len = 3, - }, - [PN533_LISTEN_MOD] = { - .len = 0, - }, -}; - -/* PN533_CMD_IN_ATR */ - -struct pn533_cmd_activate_response { - u8 status; - u8 nfcid3t[10]; - u8 didt; - u8 bst; - u8 brt; - u8 to; - u8 ppt; - /* optional */ - u8 gt[]; -} __packed; - -struct pn533_cmd_jump_dep_response { - u8 status; - u8 tg; - u8 nfcid3t[10]; - u8 didt; - u8 bst; - u8 brt; - u8 to; - u8 ppt; - /* optional */ - u8 gt[]; -} __packed; - - -/* PN533_TG_INIT_AS_TARGET */ -#define PN533_INIT_TARGET_PASSIVE 0x1 -#define PN533_INIT_TARGET_DEP 0x2 - -#define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 -#define PN533_INIT_TARGET_RESP_ACTIVE 0x1 -#define PN533_INIT_TARGET_RESP_DEP 0x4 - -enum pn533_protocol_type { - PN533_PROTO_REQ_ACK_RESP = 0, - PN533_PROTO_REQ_RESP -}; - -struct pn533 { - struct usb_device *udev; - struct usb_interface *interface; - struct nfc_dev *nfc_dev; - u32 device_type; - enum pn533_protocol_type protocol_type; - - struct urb *out_urb; - struct urb *in_urb; - - struct sk_buff_head resp_q; - struct sk_buff_head fragment_skb; - - struct workqueue_struct *wq; - struct work_struct cmd_work; - struct work_struct cmd_complete_work; - struct delayed_work poll_work; - struct work_struct mi_rx_work; - struct work_struct mi_tx_work; - struct work_struct mi_tm_rx_work; - struct work_struct mi_tm_tx_work; - struct work_struct tg_work; - struct work_struct rf_work; - - struct list_head cmd_queue; - struct pn533_cmd *cmd; - u8 cmd_pending; - struct mutex cmd_lock; /* protects cmd queue */ - - void *cmd_complete_mi_arg; - void *cmd_complete_dep_arg; - - struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; - u8 poll_mod_count; - u8 poll_mod_curr; - u8 poll_dep; - u32 poll_protocols; - u32 listen_protocols; - struct timer_list listen_timer; - int cancel_listen; - - u8 *gb; - size_t gb_len; - - u8 tgt_available_prots; - u8 tgt_active_prot; - u8 tgt_mode; - - struct pn533_frame_ops *ops; -}; - -struct pn533_cmd { - struct list_head queue; - u8 code; - int status; - struct sk_buff *req; - struct sk_buff *resp; - int resp_len; - pn533_send_async_complete_t complete_cb; - void *complete_cb_context; -}; - -struct pn533_std_frame { - u8 preamble; - __be16 start_frame; - u8 datalen; - u8 datalen_checksum; - u8 data[]; -} __packed; - -struct pn533_ext_frame { /* Extended Information frame */ - u8 preamble; - __be16 start_frame; - __be16 eif_flag; /* fixed to 0xFFFF */ - __be16 datalen; - u8 datalen_checksum; - u8 data[]; -} __packed; - -struct pn533_frame_ops { - void (*tx_frame_init)(void *frame, u8 cmd_code); - void (*tx_frame_finish)(void *frame); - void (*tx_update_payload_len)(void *frame, int len); - int tx_header_len; - int tx_tail_len; - - bool (*rx_is_frame_valid)(void *frame, struct pn533 *dev); - int (*rx_frame_size)(void *frame); - int rx_header_len; - int rx_tail_len; - - int max_payload_len; - u8 (*get_cmd_code)(void *frame); -}; - -struct pn533_acr122_ccid_hdr { - u8 type; - u32 datalen; - u8 slot; - u8 seq; - u8 params[3]; /* 3 msg specific bytes or status, error and 1 specific - byte for reposnse msg */ - u8 data[]; /* payload */ -} __packed; - -struct pn533_acr122_apdu_hdr { - u8 class; - u8 ins; - u8 p1; - u8 p2; -} __packed; - -struct pn533_acr122_tx_frame { - struct pn533_acr122_ccid_hdr ccid; - struct pn533_acr122_apdu_hdr apdu; - u8 datalen; - u8 data[]; /* pn533 frame: TFI ... */ -} __packed; - -struct pn533_acr122_rx_frame { - struct pn533_acr122_ccid_hdr ccid; - u8 data[]; /* pn533 frame : TFI ... */ -} __packed; - -static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code) -{ - struct pn533_acr122_tx_frame *frame = _frame; - - frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE; - frame->ccid.datalen = sizeof(frame->apdu) + 1; /* sizeof(apdu_hdr) + - sizeof(datalen) */ - frame->ccid.slot = 0; - frame->ccid.seq = 0; - frame->ccid.params[0] = 0; - frame->ccid.params[1] = 0; - frame->ccid.params[2] = 0; - - frame->data[0] = PN533_STD_FRAME_DIR_OUT; - frame->data[1] = cmd_code; - frame->datalen = 2; /* data[0] + data[1] */ - - frame->apdu.class = 0xFF; - frame->apdu.ins = 0; - frame->apdu.p1 = 0; - frame->apdu.p2 = 0; -} - -static void pn533_acr122_tx_frame_finish(void *_frame) -{ - struct pn533_acr122_tx_frame *frame = _frame; - - frame->ccid.datalen += frame->datalen; -} - -static void pn533_acr122_tx_update_payload_len(void *_frame, int len) -{ - struct pn533_acr122_tx_frame *frame = _frame; - - frame->datalen += len; -} - -static bool pn533_acr122_is_rx_frame_valid(void *_frame, struct pn533 *dev) -{ - struct pn533_acr122_rx_frame *frame = _frame; - - if (frame->ccid.type != 0x83) - return false; - - if (!frame->ccid.datalen) - return false; - - if (frame->data[frame->ccid.datalen - 2] == 0x63) - return false; - - return true; -} - -static int pn533_acr122_rx_frame_size(void *frame) -{ - struct pn533_acr122_rx_frame *f = frame; - - /* f->ccid.datalen already includes tail length */ - return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen; -} - -static u8 pn533_acr122_get_cmd_code(void *frame) -{ - struct pn533_acr122_rx_frame *f = frame; - - return PN533_FRAME_CMD(f); -} - -static struct pn533_frame_ops pn533_acr122_frame_ops = { - .tx_frame_init = pn533_acr122_tx_frame_init, - .tx_frame_finish = pn533_acr122_tx_frame_finish, - .tx_update_payload_len = pn533_acr122_tx_update_payload_len, - .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN, - .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN, - - .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid, - .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN, - .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN, - .rx_frame_size = pn533_acr122_rx_frame_size, - - .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN, - .get_cmd_code = pn533_acr122_get_cmd_code, -}; - -/* The rule: value(high byte) + value(low byte) + checksum = 0 */ -static inline u8 pn533_ext_checksum(u16 value) -{ - return ~(u8)(((value & 0xFF00) >> 8) + (u8)(value & 0xFF)) + 1; -} - -/* The rule: value + checksum = 0 */ -static inline u8 pn533_std_checksum(u8 value) -{ - return ~value + 1; -} - -/* The rule: sum(data elements) + checksum = 0 */ -static u8 pn533_std_data_checksum(u8 *data, int datalen) -{ - u8 sum = 0; - int i; - - for (i = 0; i < datalen; i++) - sum += data[i]; - - return pn533_std_checksum(sum); -} - -static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code) -{ - struct pn533_std_frame *frame = _frame; - - frame->preamble = 0; - frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF); - PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT; - PN533_FRAME_CMD(frame) = cmd_code; - frame->datalen = 2; -} - -static void pn533_std_tx_frame_finish(void *_frame) -{ - struct pn533_std_frame *frame = _frame; - - frame->datalen_checksum = pn533_std_checksum(frame->datalen); - - PN533_STD_FRAME_CHECKSUM(frame) = - pn533_std_data_checksum(frame->data, frame->datalen); - - PN533_STD_FRAME_POSTAMBLE(frame) = 0; -} - -static void pn533_std_tx_update_payload_len(void *_frame, int len) -{ - struct pn533_std_frame *frame = _frame; - - frame->datalen += len; -} - -static bool pn533_std_rx_frame_is_valid(void *_frame, struct pn533 *dev) -{ - u8 checksum; - struct pn533_std_frame *stdf = _frame; - - if (stdf->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) - return false; - - if (likely(!PN533_STD_IS_EXTENDED(stdf))) { - /* Standard frame code */ - dev->ops->rx_header_len = PN533_STD_FRAME_HEADER_LEN; - - checksum = pn533_std_checksum(stdf->datalen); - if (checksum != stdf->datalen_checksum) - return false; - - checksum = pn533_std_data_checksum(stdf->data, stdf->datalen); - if (checksum != PN533_STD_FRAME_CHECKSUM(stdf)) - return false; - } else { - /* Extended */ - struct pn533_ext_frame *eif = _frame; - - dev->ops->rx_header_len = PN533_EXT_FRAME_HEADER_LEN; - - checksum = pn533_ext_checksum(be16_to_cpu(eif->datalen)); - if (checksum != eif->datalen_checksum) - return false; - - /* check data checksum */ - checksum = pn533_std_data_checksum(eif->data, - be16_to_cpu(eif->datalen)); - if (checksum != PN533_EXT_FRAME_CHECKSUM(eif)) - return false; - } - - return true; -} - -static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame *frame) -{ - if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) - return false; - - if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) - return false; - - return true; -} - -static inline int pn533_std_rx_frame_size(void *frame) -{ - struct pn533_std_frame *f = frame; - - /* check for Extended Information frame */ - if (PN533_STD_IS_EXTENDED(f)) { - struct pn533_ext_frame *eif = frame; - - return sizeof(struct pn533_ext_frame) - + be16_to_cpu(eif->datalen) + PN533_STD_FRAME_TAIL_LEN; - } - - return sizeof(struct pn533_std_frame) + f->datalen + - PN533_STD_FRAME_TAIL_LEN; -} - -static u8 pn533_std_get_cmd_code(void *frame) -{ - struct pn533_std_frame *f = frame; - struct pn533_ext_frame *eif = frame; - - if (PN533_STD_IS_EXTENDED(f)) - return PN533_FRAME_CMD(eif); - else - return PN533_FRAME_CMD(f); -} - -static struct pn533_frame_ops pn533_std_frame_ops = { - .tx_frame_init = pn533_std_tx_frame_init, - .tx_frame_finish = pn533_std_tx_frame_finish, - .tx_update_payload_len = pn533_std_tx_update_payload_len, - .tx_header_len = PN533_STD_FRAME_HEADER_LEN, - .tx_tail_len = PN533_STD_FRAME_TAIL_LEN, - - .rx_is_frame_valid = pn533_std_rx_frame_is_valid, - .rx_frame_size = pn533_std_rx_frame_size, - .rx_header_len = PN533_STD_FRAME_HEADER_LEN, - .rx_tail_len = PN533_STD_FRAME_TAIL_LEN, - - .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN, - .get_cmd_code = pn533_std_get_cmd_code, -}; - -static bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame) -{ - return (dev->ops->get_cmd_code(frame) == - PN533_CMD_RESPONSE(dev->cmd->code)); -} - -static void pn533_recv_response(struct urb *urb) -{ - struct pn533 *dev = urb->context; - struct pn533_cmd *cmd = dev->cmd; - u8 *in_frame; - - cmd->status = urb->status; - - switch (urb->status) { - case 0: - break; /* success */ - case -ECONNRESET: - case -ENOENT: - dev_dbg(&dev->interface->dev, - "The urb has been canceled (status %d)\n", - urb->status); - goto sched_wq; - case -ESHUTDOWN: - default: - nfc_err(&dev->interface->dev, - "Urb failure (status %d)\n", urb->status); - goto sched_wq; - } - - in_frame = dev->in_urb->transfer_buffer; - - dev_dbg(&dev->interface->dev, "Received a frame\n"); - print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, - dev->ops->rx_frame_size(in_frame), false); - - if (!dev->ops->rx_is_frame_valid(in_frame, dev)) { - nfc_err(&dev->interface->dev, "Received an invalid frame\n"); - cmd->status = -EIO; - goto sched_wq; - } - - if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) { - nfc_err(&dev->interface->dev, - "It it not the response to the last command\n"); - cmd->status = -EIO; - goto sched_wq; - } - -sched_wq: - queue_work(dev->wq, &dev->cmd_complete_work); -} - -static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) -{ - dev->in_urb->complete = pn533_recv_response; - - return usb_submit_urb(dev->in_urb, flags); -} - -static void pn533_recv_ack(struct urb *urb) -{ - struct pn533 *dev = urb->context; - struct pn533_cmd *cmd = dev->cmd; - struct pn533_std_frame *in_frame; - int rc; - - cmd->status = urb->status; - - switch (urb->status) { - case 0: - break; /* success */ - case -ECONNRESET: - case -ENOENT: - dev_dbg(&dev->interface->dev, - "The urb has been stopped (status %d)\n", - urb->status); - goto sched_wq; - case -ESHUTDOWN: - default: - nfc_err(&dev->interface->dev, - "Urb failure (status %d)\n", urb->status); - goto sched_wq; - } - - in_frame = dev->in_urb->transfer_buffer; - - if (!pn533_std_rx_frame_is_ack(in_frame)) { - nfc_err(&dev->interface->dev, "Received an invalid ack\n"); - cmd->status = -EIO; - goto sched_wq; - } - - rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); - if (rc) { - nfc_err(&dev->interface->dev, - "usb_submit_urb failed with result %d\n", rc); - cmd->status = rc; - goto sched_wq; - } - - return; - -sched_wq: - queue_work(dev->wq, &dev->cmd_complete_work); -} - -static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) -{ - dev->in_urb->complete = pn533_recv_ack; - - return usb_submit_urb(dev->in_urb, flags); -} - -static int pn533_send_ack(struct pn533 *dev, gfp_t flags) -{ - u8 ack[PN533_STD_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; - /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ - int rc; - - dev->out_urb->transfer_buffer = ack; - dev->out_urb->transfer_buffer_length = sizeof(ack); - rc = usb_submit_urb(dev->out_urb, flags); - - return rc; -} - -static int __pn533_send_frame_async(struct pn533 *dev, - struct sk_buff *out, - struct sk_buff *in, - int in_len) -{ - int rc; - - dev->out_urb->transfer_buffer = out->data; - dev->out_urb->transfer_buffer_length = out->len; - - dev->in_urb->transfer_buffer = in->data; - dev->in_urb->transfer_buffer_length = in_len; - - print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, - out->data, out->len, false); - - rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); - if (rc) - return rc; - - if (dev->protocol_type == PN533_PROTO_REQ_RESP) { - /* request for response for sent packet directly */ - rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); - if (rc) - goto error; - } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) { - /* request for ACK if that's the case */ - rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL); - if (rc) - goto error; - } - - return 0; - -error: - usb_unlink_urb(dev->out_urb); - return rc; -} - -static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code, - struct sk_buff *skb) -{ - /* payload is already there, just update datalen */ - int payload_len = skb->len; - struct pn533_frame_ops *ops = dev->ops; - - - skb_push(skb, ops->tx_header_len); - skb_put(skb, ops->tx_tail_len); - - ops->tx_frame_init(skb->data, cmd_code); - ops->tx_update_payload_len(skb->data, payload_len); - ops->tx_frame_finish(skb->data); -} - -static int pn533_send_async_complete(struct pn533 *dev) -{ - struct pn533_cmd *cmd = dev->cmd; - int status = cmd->status; - - struct sk_buff *req = cmd->req; - struct sk_buff *resp = cmd->resp; - - int rc; - - dev_kfree_skb(req); - - if (status < 0) { - rc = cmd->complete_cb(dev, cmd->complete_cb_context, - ERR_PTR(status)); - dev_kfree_skb(resp); - goto done; - } - - skb_put(resp, dev->ops->rx_frame_size(resp->data)); - skb_pull(resp, dev->ops->rx_header_len); - skb_trim(resp, resp->len - dev->ops->rx_tail_len); - - rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp); - -done: - kfree(cmd); - dev->cmd = NULL; - return rc; -} - -static int __pn533_send_async(struct pn533 *dev, u8 cmd_code, - struct sk_buff *req, struct sk_buff *resp, - int resp_len, - pn533_send_async_complete_t complete_cb, - void *complete_cb_context) -{ - struct pn533_cmd *cmd; - int rc = 0; - - dev_dbg(&dev->interface->dev, "Sending command 0x%x\n", cmd_code); - - cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); - if (!cmd) - return -ENOMEM; - - cmd->code = cmd_code; - cmd->req = req; - cmd->resp = resp; - cmd->resp_len = resp_len; - cmd->complete_cb = complete_cb; - cmd->complete_cb_context = complete_cb_context; - - pn533_build_cmd_frame(dev, cmd_code, req); - - mutex_lock(&dev->cmd_lock); - - if (!dev->cmd_pending) { - rc = __pn533_send_frame_async(dev, req, resp, resp_len); - if (rc) - goto error; - - dev->cmd_pending = 1; - dev->cmd = cmd; - goto unlock; - } - - dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x\n", - __func__, cmd_code); - - INIT_LIST_HEAD(&cmd->queue); - list_add_tail(&cmd->queue, &dev->cmd_queue); - - goto unlock; - -error: - kfree(cmd); -unlock: - mutex_unlock(&dev->cmd_lock); - return rc; -} - -static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code, - struct sk_buff *req, - pn533_send_async_complete_t complete_cb, - void *complete_cb_context) -{ - struct sk_buff *resp; - int rc; - int resp_len = dev->ops->rx_header_len + - dev->ops->max_payload_len + - dev->ops->rx_tail_len; - - resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL); - if (!resp) - return -ENOMEM; - - rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, - complete_cb_context); - if (rc) - dev_kfree_skb(resp); - - return rc; -} - -static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code, - struct sk_buff *req, - pn533_send_async_complete_t complete_cb, - void *complete_cb_context) -{ - struct sk_buff *resp; - int rc; - int resp_len = dev->ops->rx_header_len + - dev->ops->max_payload_len + - dev->ops->rx_tail_len; - - resp = alloc_skb(resp_len, GFP_KERNEL); - if (!resp) - return -ENOMEM; - - rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, - complete_cb_context); - if (rc) - dev_kfree_skb(resp); - - return rc; -} - -/* - * pn533_send_cmd_direct_async - * - * The function sends a piority cmd directly to the chip omiting the cmd - * queue. It's intended to be used by chaining mechanism of received responses - * where the host has to request every single chunk of data before scheduling - * next cmd from the queue. - */ -static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code, - struct sk_buff *req, - pn533_send_async_complete_t complete_cb, - void *complete_cb_context) -{ - struct sk_buff *resp; - struct pn533_cmd *cmd; - int rc; - int resp_len = dev->ops->rx_header_len + - dev->ops->max_payload_len + - dev->ops->rx_tail_len; - - resp = alloc_skb(resp_len, GFP_KERNEL); - if (!resp) - return -ENOMEM; - - cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); - if (!cmd) { - dev_kfree_skb(resp); - return -ENOMEM; - } - - cmd->code = cmd_code; - cmd->req = req; - cmd->resp = resp; - cmd->resp_len = resp_len; - cmd->complete_cb = complete_cb; - cmd->complete_cb_context = complete_cb_context; - - pn533_build_cmd_frame(dev, cmd_code, req); - - rc = __pn533_send_frame_async(dev, req, resp, resp_len); - if (rc < 0) { - dev_kfree_skb(resp); - kfree(cmd); - } else { - dev->cmd = cmd; - } - - return rc; -} - -static void pn533_wq_cmd_complete(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); - int rc; - - rc = pn533_send_async_complete(dev); - if (rc != -EINPROGRESS) - queue_work(dev->wq, &dev->cmd_work); -} - -static void pn533_wq_cmd(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, cmd_work); - struct pn533_cmd *cmd; - int rc; - - mutex_lock(&dev->cmd_lock); - - if (list_empty(&dev->cmd_queue)) { - dev->cmd_pending = 0; - mutex_unlock(&dev->cmd_lock); - return; - } - - cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); - - list_del(&cmd->queue); - - mutex_unlock(&dev->cmd_lock); - - rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len); - if (rc < 0) { - dev_kfree_skb(cmd->req); - dev_kfree_skb(cmd->resp); - kfree(cmd); - return; - } - - dev->cmd = cmd; -} - -struct pn533_sync_cmd_response { - struct sk_buff *resp; - struct completion done; -}; - -static int pn533_send_sync_complete(struct pn533 *dev, void *_arg, - struct sk_buff *resp) -{ - struct pn533_sync_cmd_response *arg = _arg; - - arg->resp = resp; - complete(&arg->done); - - return 0; -} - -/* pn533_send_cmd_sync - * - * Please note the req parameter is freed inside the function to - * limit a number of return value interpretations by the caller. - * - * 1. negative in case of error during TX path -> req should be freed - * - * 2. negative in case of error during RX path -> req should not be freed - * as it's been already freed at the begining of RX path by - * async_complete_cb. - * - * 3. valid pointer in case of succesfult RX path - * - * A caller has to check a return value with IS_ERR macro. If the test pass, - * the returned pointer is valid. - * - * */ -static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code, - struct sk_buff *req) -{ - int rc; - struct pn533_sync_cmd_response arg; - - init_completion(&arg.done); - - rc = pn533_send_cmd_async(dev, cmd_code, req, - pn533_send_sync_complete, &arg); - if (rc) { - dev_kfree_skb(req); - return ERR_PTR(rc); - } - - wait_for_completion(&arg.done); - - return arg.resp; -} - -static void pn533_send_complete(struct urb *urb) -{ - struct pn533 *dev = urb->context; - - switch (urb->status) { - case 0: - break; /* success */ - case -ECONNRESET: - case -ENOENT: - dev_dbg(&dev->interface->dev, - "The urb has been stopped (status %d)\n", - urb->status); - break; - case -ESHUTDOWN: - default: - nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", - urb->status); - } -} - -static void pn533_abort_cmd(struct pn533 *dev, gfp_t flags) -{ - /* ACR122U does not support any command which aborts last - * issued command i.e. as ACK for standard PN533. Additionally, - * it behaves stange, sending broken or incorrect responses, - * when we cancel urb before the chip will send response. - */ - if (dev->device_type == PN533_DEVICE_ACR122U) - return; - - /* An ack will cancel the last issued command */ - pn533_send_ack(dev, flags); - - /* cancel the urb request */ - usb_kill_urb(dev->in_urb); -} - -static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size) -{ - struct sk_buff *skb; - - skb = alloc_skb(dev->ops->tx_header_len + - size + - dev->ops->tx_tail_len, GFP_KERNEL); - - if (skb) - skb_reserve(skb, dev->ops->tx_header_len); - - return skb; -} - -struct pn533_target_type_a { - __be16 sens_res; - u8 sel_res; - u8 nfcid_len; - u8 nfcid_data[]; -} __packed; - - -#define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) -#define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) -#define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) - -#define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 -#define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C - -#define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) -#define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) - -#define PN533_TYPE_A_SEL_PROT_MIFARE 0 -#define PN533_TYPE_A_SEL_PROT_ISO14443 1 -#define PN533_TYPE_A_SEL_PROT_DEP 2 -#define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 - -static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, - int target_data_len) -{ - u8 ssd; - u8 platconf; - - if (target_data_len < sizeof(struct pn533_target_type_a)) - return false; - - /* The lenght check of nfcid[] and ats[] are not being performed because - the values are not being used */ - - /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ - ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); - platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); - - if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && - platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || - (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && - platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) - return false; - - /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ - if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) - return false; - - return true; -} - -static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, - int tgt_data_len) -{ - struct pn533_target_type_a *tgt_type_a; - - tgt_type_a = (struct pn533_target_type_a *)tgt_data; - - if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) - return -EPROTO; - - switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { - case PN533_TYPE_A_SEL_PROT_MIFARE: - nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; - break; - case PN533_TYPE_A_SEL_PROT_ISO14443: - nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; - break; - case PN533_TYPE_A_SEL_PROT_DEP: - nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; - break; - case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: - nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | - NFC_PROTO_NFC_DEP_MASK; - break; - } - - nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); - nfc_tgt->sel_res = tgt_type_a->sel_res; - nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; - memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); - - return 0; -} - -struct pn533_target_felica { - u8 pol_res; - u8 opcode; - u8 nfcid2[NFC_NFCID2_MAXSIZE]; - u8 pad[8]; - /* optional */ - u8 syst_code[]; -} __packed; - -#define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 -#define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE - -static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, - int target_data_len) -{ - if (target_data_len < sizeof(struct pn533_target_felica)) - return false; - - if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) - return false; - - return true; -} - -static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, - int tgt_data_len) -{ - struct pn533_target_felica *tgt_felica; - - tgt_felica = (struct pn533_target_felica *)tgt_data; - - if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) - return -EPROTO; - - if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) && - (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2)) - nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; - else - nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; - - memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); - nfc_tgt->sensf_res_len = 9; - - memcpy(nfc_tgt->nfcid2, tgt_felica->nfcid2, NFC_NFCID2_MAXSIZE); - nfc_tgt->nfcid2_len = NFC_NFCID2_MAXSIZE; - - return 0; -} - -struct pn533_target_jewel { - __be16 sens_res; - u8 jewelid[4]; -} __packed; - -static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, - int target_data_len) -{ - u8 ssd; - u8 platconf; - - if (target_data_len < sizeof(struct pn533_target_jewel)) - return false; - - /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ - ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); - platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); - - if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && - platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || - (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && - platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) - return false; - - return true; -} - -static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, - int tgt_data_len) -{ - struct pn533_target_jewel *tgt_jewel; - - tgt_jewel = (struct pn533_target_jewel *)tgt_data; - - if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) - return -EPROTO; - - nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; - nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); - nfc_tgt->nfcid1_len = 4; - memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); - - return 0; -} - -struct pn533_type_b_prot_info { - u8 bitrate; - u8 fsci_type; - u8 fwi_adc_fo; -} __packed; - -#define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) -#define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) -#define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 - -struct pn533_type_b_sens_res { - u8 opcode; - u8 nfcid[4]; - u8 appdata[4]; - struct pn533_type_b_prot_info prot_info; -} __packed; - -#define PN533_TYPE_B_OPC_SENSB_RES 0x50 - -struct pn533_target_type_b { - struct pn533_type_b_sens_res sensb_res; - u8 attrib_res_len; - u8 attrib_res[]; -} __packed; - -static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, - int target_data_len) -{ - if (target_data_len < sizeof(struct pn533_target_type_b)) - return false; - - if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) - return false; - - if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & - PN533_TYPE_B_PROT_TYPE_RFU_MASK) - return false; - - return true; -} - -static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, - int tgt_data_len) -{ - struct pn533_target_type_b *tgt_type_b; - - tgt_type_b = (struct pn533_target_type_b *)tgt_data; - - if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) - return -EPROTO; - - nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; - - return 0; -} - -static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata, - int tgdata_len) -{ - struct nfc_target nfc_tgt; - int rc; - - dev_dbg(&dev->interface->dev, "%s: modulation=%d\n", - __func__, dev->poll_mod_curr); - - if (tg != 1) - return -EPROTO; - - memset(&nfc_tgt, 0, sizeof(struct nfc_target)); - - switch (dev->poll_mod_curr) { - case PN533_POLL_MOD_106KBPS_A: - rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len); - break; - case PN533_POLL_MOD_212KBPS_FELICA: - case PN533_POLL_MOD_424KBPS_FELICA: - rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len); - break; - case PN533_POLL_MOD_106KBPS_JEWEL: - rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len); - break; - case PN533_POLL_MOD_847KBPS_B: - rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len); - break; - default: - nfc_err(&dev->interface->dev, - "Unknown current poll modulation\n"); - return -EPROTO; - } - - if (rc) - return rc; - - if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { - dev_dbg(&dev->interface->dev, - "The Tg found doesn't have the desired protocol\n"); - return -EAGAIN; - } - - dev_dbg(&dev->interface->dev, - "Target found - supported protocols: 0x%x\n", - nfc_tgt.supported_protocols); - - dev->tgt_available_prots = nfc_tgt.supported_protocols; - - nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); - - return 0; -} - -static inline void pn533_poll_next_mod(struct pn533 *dev) -{ - dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; -} - -static void pn533_poll_reset_mod_list(struct pn533 *dev) -{ - dev->poll_mod_count = 0; -} - -static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) -{ - dev->poll_mod_active[dev->poll_mod_count] = - (struct pn533_poll_modulations *)&poll_mod[mod_index]; - dev->poll_mod_count++; -} - -static void pn533_poll_create_mod_list(struct pn533 *dev, - u32 im_protocols, u32 tm_protocols) -{ - pn533_poll_reset_mod_list(dev); - - if ((im_protocols & NFC_PROTO_MIFARE_MASK) || - (im_protocols & NFC_PROTO_ISO14443_MASK) || - (im_protocols & NFC_PROTO_NFC_DEP_MASK)) - pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); - - if (im_protocols & NFC_PROTO_FELICA_MASK || - im_protocols & NFC_PROTO_NFC_DEP_MASK) { - pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); - pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); - } - - if (im_protocols & NFC_PROTO_JEWEL_MASK) - pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); - - if (im_protocols & NFC_PROTO_ISO14443_B_MASK) - pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); - - if (tm_protocols) - pn533_poll_add_mod(dev, PN533_LISTEN_MOD); -} - -static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp) -{ - u8 nbtg, tg, *tgdata; - int rc, tgdata_len; - - /* Toggle the DEP polling */ - dev->poll_dep = 1; - - nbtg = resp->data[0]; - tg = resp->data[1]; - tgdata = &resp->data[2]; - tgdata_len = resp->len - 2; /* nbtg + tg */ - - if (nbtg) { - rc = pn533_target_found(dev, tg, tgdata, tgdata_len); - - /* We must stop the poll after a valid target found */ - if (rc == 0) { - pn533_poll_reset_mod_list(dev); - return 0; - } - } - - return -EAGAIN; -} - -static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) -{ - struct sk_buff *skb; - u8 *felica, *nfcid3, *gb; - - u8 *gbytes = dev->gb; - size_t gbytes_len = dev->gb_len; - - u8 felica_params[18] = {0x1, 0xfe, /* DEP */ - 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ - 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0xff, 0xff}; /* System code */ - - u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ - 0x0, 0x0, 0x0, - 0x40}; /* SEL_RES for DEP */ - - unsigned int skb_len = 36 + /* mode (1), mifare (6), - felica (18), nfcid3 (10), gb_len (1) */ - gbytes_len + - 1; /* len Tk*/ - - skb = pn533_alloc_skb(dev, skb_len); - if (!skb) - return NULL; - - /* DEP support only */ - *skb_put(skb, 1) = PN533_INIT_TARGET_DEP; - - /* MIFARE params */ - memcpy(skb_put(skb, 6), mifare_params, 6); - - /* Felica params */ - felica = skb_put(skb, 18); - memcpy(felica, felica_params, 18); - get_random_bytes(felica + 2, 6); - - /* NFCID3 */ - nfcid3 = skb_put(skb, 10); - memset(nfcid3, 0, 10); - memcpy(nfcid3, felica, 8); - - /* General bytes */ - *skb_put(skb, 1) = gbytes_len; - - gb = skb_put(skb, gbytes_len); - memcpy(gb, gbytes, gbytes_len); - - /* Len Tk */ - *skb_put(skb, 1) = 0; - - return skb; -} - -#define PN533_CMD_DATAEXCH_HEAD_LEN 1 -#define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 -static void pn533_wq_tm_mi_recv(struct work_struct *work); -static struct sk_buff *pn533_build_response(struct pn533 *dev); - -static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp) -{ - struct sk_buff *skb; - u8 status, ret, mi; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (IS_ERR(resp)) { - skb_queue_purge(&dev->resp_q); - return PTR_ERR(resp); - } - - status = resp->data[0]; - - ret = status & PN533_CMD_RET_MASK; - mi = status & PN533_CMD_MI_MASK; - - skb_pull(resp, sizeof(status)); - - if (ret != PN533_CMD_RET_SUCCESS) { - rc = -EIO; - goto error; - } - - skb_queue_tail(&dev->resp_q, resp); - - if (mi) { - queue_work(dev->wq, &dev->mi_tm_rx_work); - return -EINPROGRESS; - } - - skb = pn533_build_response(dev); - if (!skb) { - rc = -EIO; - goto error; - } - - return nfc_tm_data_received(dev->nfc_dev, skb); - -error: - nfc_tm_deactivated(dev->nfc_dev); - dev->tgt_mode = 0; - skb_queue_purge(&dev->resp_q); - dev_kfree_skb(resp); - - return rc; -} - -static void pn533_wq_tm_mi_recv(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, mi_tm_rx_work); - struct sk_buff *skb; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb = pn533_alloc_skb(dev, 0); - if (!skb) - return; - - rc = pn533_send_cmd_direct_async(dev, - PN533_CMD_TG_GET_DATA, - skb, - pn533_tm_get_data_complete, - NULL); - - if (rc < 0) - dev_kfree_skb(skb); - - return; -} - -static int pn533_tm_send_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp); -static void pn533_wq_tm_mi_send(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, mi_tm_tx_work); - struct sk_buff *skb; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - /* Grab the first skb in the queue */ - skb = skb_dequeue(&dev->fragment_skb); - if (skb == NULL) { /* No more data */ - /* Reset the queue for future use */ - skb_queue_head_init(&dev->fragment_skb); - goto error; - } - - /* last entry - remove MI bit */ - if (skb_queue_len(&dev->fragment_skb) == 0) { - rc = pn533_send_cmd_direct_async(dev, PN533_CMD_TG_SET_DATA, - skb, pn533_tm_send_complete, NULL); - } else - rc = pn533_send_cmd_direct_async(dev, - PN533_CMD_TG_SET_META_DATA, - skb, pn533_tm_send_complete, NULL); - - if (rc == 0) /* success */ - return; - - dev_err(&dev->interface->dev, - "Error %d when trying to perform set meta data_exchange", rc); - - dev_kfree_skb(skb); - -error: - pn533_send_ack(dev, GFP_KERNEL); - queue_work(dev->wq, &dev->cmd_work); -} - -static void pn533_wq_tg_get_data(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, tg_work); - struct sk_buff *skb; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb = pn533_alloc_skb(dev, 0); - if (!skb) - return; - - rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb, - pn533_tm_get_data_complete, NULL); - - if (rc < 0) - dev_kfree_skb(skb); - - return; -} - -#define ATR_REQ_GB_OFFSET 17 -static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp) -{ - u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb; - size_t gb_len; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (resp->len < ATR_REQ_GB_OFFSET + 1) - return -EINVAL; - - mode = resp->data[0]; - cmd = &resp->data[1]; - - dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n", - mode, resp->len); - - if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) == - PN533_INIT_TARGET_RESP_ACTIVE) - comm_mode = NFC_COMM_ACTIVE; - - if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */ - return -EOPNOTSUPP; - - gb = cmd + ATR_REQ_GB_OFFSET; - gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1); - - rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, - comm_mode, gb, gb_len); - if (rc < 0) { - nfc_err(&dev->interface->dev, - "Error when signaling target activation\n"); - return rc; - } - - dev->tgt_mode = 1; - queue_work(dev->wq, &dev->tg_work); - - return 0; -} - -static void pn533_listen_mode_timer(unsigned long data) -{ - struct pn533 *dev = (struct pn533 *)data; - - dev_dbg(&dev->interface->dev, "Listen mode timeout\n"); - - dev->cancel_listen = 1; - - pn533_poll_next_mod(dev); - - queue_delayed_work(dev->wq, &dev->poll_work, - msecs_to_jiffies(PN533_POLL_INTERVAL)); -} - -static int pn533_rf_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp) -{ - int rc = 0; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (IS_ERR(resp)) { - rc = PTR_ERR(resp); - - nfc_err(&dev->interface->dev, "RF setting error %d\n", rc); - - return rc; - } - - queue_delayed_work(dev->wq, &dev->poll_work, - msecs_to_jiffies(PN533_POLL_INTERVAL)); - - dev_kfree_skb(resp); - return rc; -} - -static void pn533_wq_rf(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, rf_work); - struct sk_buff *skb; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb = pn533_alloc_skb(dev, 2); - if (!skb) - return; - - *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD; - *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD_AUTO_RFCA; - - rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb, - pn533_rf_complete, NULL); - if (rc < 0) { - dev_kfree_skb(skb); - nfc_err(&dev->interface->dev, "RF setting error %d\n", rc); - } - - return; -} - -static int pn533_poll_dep_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp) -{ - struct pn533_cmd_jump_dep_response *rsp; - struct nfc_target nfc_target; - u8 target_gt_len; - int rc; - - if (IS_ERR(resp)) - return PTR_ERR(resp); - - rsp = (struct pn533_cmd_jump_dep_response *)resp->data; - - rc = rsp->status & PN533_CMD_RET_MASK; - if (rc != PN533_CMD_RET_SUCCESS) { - /* Not target found, turn radio off */ - queue_work(dev->wq, &dev->rf_work); - - dev_kfree_skb(resp); - return 0; - } - - dev_dbg(&dev->interface->dev, "Creating new target"); - - nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; - nfc_target.nfcid1_len = 10; - memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); - rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); - if (rc) - goto error; - - dev->tgt_available_prots = 0; - dev->tgt_active_prot = NFC_PROTO_NFC_DEP; - - /* ATR_RES general bytes are located at offset 17 */ - target_gt_len = resp->len - 17; - rc = nfc_set_remote_general_bytes(dev->nfc_dev, - rsp->gt, target_gt_len); - if (!rc) { - rc = nfc_dep_link_is_up(dev->nfc_dev, - dev->nfc_dev->targets[0].idx, - 0, NFC_RF_INITIATOR); - - if (!rc) - pn533_poll_reset_mod_list(dev); - } -error: - dev_kfree_skb(resp); - return rc; -} - -#define PASSIVE_DATA_LEN 5 -static int pn533_poll_dep(struct nfc_dev *nfc_dev) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - struct sk_buff *skb; - int rc, skb_len; - u8 *next, nfcid3[NFC_NFCID3_MAXSIZE]; - u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; - - dev_dbg(&dev->interface->dev, "%s", __func__); - - if (!dev->gb) { - dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); - - if (!dev->gb || !dev->gb_len) { - dev->poll_dep = 0; - queue_work(dev->wq, &dev->rf_work); - } - } - - skb_len = 3 + dev->gb_len; /* ActPass + BR + Next */ - skb_len += PASSIVE_DATA_LEN; - - /* NFCID3 */ - skb_len += NFC_NFCID3_MAXSIZE; - nfcid3[0] = 0x1; - nfcid3[1] = 0xfe; - get_random_bytes(nfcid3 + 2, 6); - - skb = pn533_alloc_skb(dev, skb_len); - if (!skb) - return -ENOMEM; - - *skb_put(skb, 1) = 0x01; /* Active */ - *skb_put(skb, 1) = 0x02; /* 424 kbps */ - - next = skb_put(skb, 1); /* Next */ - *next = 0; - - /* Copy passive data */ - memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, PASSIVE_DATA_LEN); - *next |= 1; - - /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */ - memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), nfcid3, - NFC_NFCID3_MAXSIZE); - *next |= 2; - - memcpy(skb_put(skb, dev->gb_len), dev->gb, dev->gb_len); - *next |= 4; /* We have some Gi */ - - rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, - pn533_poll_dep_complete, NULL); - - if (rc < 0) - dev_kfree_skb(skb); - - return rc; -} - -static int pn533_poll_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp) -{ - struct pn533_poll_modulations *cur_mod; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (IS_ERR(resp)) { - rc = PTR_ERR(resp); - - nfc_err(&dev->interface->dev, "%s Poll complete error %d\n", - __func__, rc); - - if (rc == -ENOENT) { - if (dev->poll_mod_count != 0) - return rc; - else - goto stop_poll; - } else if (rc < 0) { - nfc_err(&dev->interface->dev, - "Error %d when running poll\n", rc); - goto stop_poll; - } - } - - cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; - - if (cur_mod->len == 0) { /* Target mode */ - del_timer(&dev->listen_timer); - rc = pn533_init_target_complete(dev, resp); - goto done; - } - - /* Initiator mode */ - rc = pn533_start_poll_complete(dev, resp); - if (!rc) - goto done; - - if (!dev->poll_mod_count) { - dev_dbg(&dev->interface->dev, "Polling has been stopped\n"); - goto done; - } - - pn533_poll_next_mod(dev); - /* Not target found, turn radio off */ - queue_work(dev->wq, &dev->rf_work); - -done: - dev_kfree_skb(resp); - return rc; - -stop_poll: - nfc_err(&dev->interface->dev, "Polling operation has been stopped\n"); - - pn533_poll_reset_mod_list(dev); - dev->poll_protocols = 0; - return rc; -} - -static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev, - struct pn533_poll_modulations *mod) -{ - struct sk_buff *skb; - - skb = pn533_alloc_skb(dev, mod->len); - if (!skb) - return NULL; - - memcpy(skb_put(skb, mod->len), &mod->data, mod->len); - - return skb; -} - -static int pn533_send_poll_frame(struct pn533 *dev) -{ - struct pn533_poll_modulations *mod; - struct sk_buff *skb; - int rc; - u8 cmd_code; - - mod = dev->poll_mod_active[dev->poll_mod_curr]; - - dev_dbg(&dev->interface->dev, "%s mod len %d\n", - __func__, mod->len); - - if (dev->poll_dep) { - dev->poll_dep = 0; - return pn533_poll_dep(dev->nfc_dev); - } - - if (mod->len == 0) { /* Listen mode */ - cmd_code = PN533_CMD_TG_INIT_AS_TARGET; - skb = pn533_alloc_poll_tg_frame(dev); - } else { /* Polling mode */ - cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET; - skb = pn533_alloc_poll_in_frame(dev, mod); - } - - if (!skb) { - nfc_err(&dev->interface->dev, "Failed to allocate skb\n"); - return -ENOMEM; - } - - rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete, - NULL); - if (rc < 0) { - dev_kfree_skb(skb); - nfc_err(&dev->interface->dev, "Polling loop error %d\n", rc); - } - - return rc; -} - -static void pn533_wq_poll(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, poll_work.work); - struct pn533_poll_modulations *cur_mod; - int rc; - - cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; - - dev_dbg(&dev->interface->dev, - "%s cancel_listen %d modulation len %d\n", - __func__, dev->cancel_listen, cur_mod->len); - - if (dev->cancel_listen == 1) { - dev->cancel_listen = 0; - pn533_abort_cmd(dev, GFP_ATOMIC); - } - - rc = pn533_send_poll_frame(dev); - if (rc) - return; - - if (cur_mod->len == 0 && dev->poll_mod_count > 1) - mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); - - return; -} - -static int pn533_start_poll(struct nfc_dev *nfc_dev, - u32 im_protocols, u32 tm_protocols) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - struct pn533_poll_modulations *cur_mod; - u8 rand_mod; - int rc; - - dev_dbg(&dev->interface->dev, - "%s: im protocols 0x%x tm protocols 0x%x\n", - __func__, im_protocols, tm_protocols); - - if (dev->tgt_active_prot) { - nfc_err(&dev->interface->dev, - "Cannot poll with a target already activated\n"); - return -EBUSY; - } - - if (dev->tgt_mode) { - nfc_err(&dev->interface->dev, - "Cannot poll while already being activated\n"); - return -EBUSY; - } - - if (tm_protocols) { - dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); - if (dev->gb == NULL) - tm_protocols = 0; - } - - pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); - dev->poll_protocols = im_protocols; - dev->listen_protocols = tm_protocols; - - /* Do not always start polling from the same modulation */ - get_random_bytes(&rand_mod, sizeof(rand_mod)); - rand_mod %= dev->poll_mod_count; - dev->poll_mod_curr = rand_mod; - - cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; - - rc = pn533_send_poll_frame(dev); - - /* Start listen timer */ - if (!rc && cur_mod->len == 0 && dev->poll_mod_count > 1) - mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); - - return rc; -} - -static void pn533_stop_poll(struct nfc_dev *nfc_dev) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - - del_timer(&dev->listen_timer); - - if (!dev->poll_mod_count) { - dev_dbg(&dev->interface->dev, - "Polling operation was not running\n"); - return; - } - - pn533_abort_cmd(dev, GFP_KERNEL); - flush_delayed_work(&dev->poll_work); - pn533_poll_reset_mod_list(dev); -} - -static int pn533_activate_target_nfcdep(struct pn533 *dev) -{ - struct pn533_cmd_activate_response *rsp; - u16 gt_len; - int rc; - struct sk_buff *skb; - struct sk_buff *resp; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/ - if (!skb) - return -ENOMEM; - - *skb_put(skb, sizeof(u8)) = 1; /* TG */ - *skb_put(skb, sizeof(u8)) = 0; /* Next */ - - resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); - if (IS_ERR(resp)) - return PTR_ERR(resp); - - rsp = (struct pn533_cmd_activate_response *)resp->data; - rc = rsp->status & PN533_CMD_RET_MASK; - if (rc != PN533_CMD_RET_SUCCESS) { - nfc_err(&dev->interface->dev, - "Target activation failed (error 0x%x)\n", rc); - dev_kfree_skb(resp); - return -EIO; - } - - /* ATR_RES general bytes are located at offset 16 */ - gt_len = resp->len - 16; - rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len); - - dev_kfree_skb(resp); - return rc; -} - -static int pn533_activate_target(struct nfc_dev *nfc_dev, - struct nfc_target *target, u32 protocol) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - int rc; - - dev_dbg(&dev->interface->dev, "%s: protocol=%u\n", __func__, protocol); - - if (dev->poll_mod_count) { - nfc_err(&dev->interface->dev, - "Cannot activate while polling\n"); - return -EBUSY; - } - - if (dev->tgt_active_prot) { - nfc_err(&dev->interface->dev, - "There is already an active target\n"); - return -EBUSY; - } - - if (!dev->tgt_available_prots) { - nfc_err(&dev->interface->dev, - "There is no available target to activate\n"); - return -EINVAL; - } - - if (!(dev->tgt_available_prots & (1 << protocol))) { - nfc_err(&dev->interface->dev, - "Target doesn't support requested proto %u\n", - protocol); - return -EINVAL; - } - - if (protocol == NFC_PROTO_NFC_DEP) { - rc = pn533_activate_target_nfcdep(dev); - if (rc) { - nfc_err(&dev->interface->dev, - "Activating target with DEP failed %d\n", rc); - return rc; - } - } - - dev->tgt_active_prot = protocol; - dev->tgt_available_prots = 0; - - return 0; -} - -static void pn533_deactivate_target(struct nfc_dev *nfc_dev, - struct nfc_target *target, u8 mode) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - struct sk_buff *skb; - struct sk_buff *resp; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (!dev->tgt_active_prot) { - nfc_err(&dev->interface->dev, "There is no active target\n"); - return; - } - - dev->tgt_active_prot = 0; - skb_queue_purge(&dev->resp_q); - - skb = pn533_alloc_skb(dev, sizeof(u8)); - if (!skb) - return; - - *skb_put(skb, 1) = 1; /* TG*/ - - resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb); - if (IS_ERR(resp)) - return; - - rc = resp->data[0] & PN533_CMD_RET_MASK; - if (rc != PN533_CMD_RET_SUCCESS) - nfc_err(&dev->interface->dev, - "Error 0x%x when releasing the target\n", rc); - - dev_kfree_skb(resp); - return; -} - - -static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp) -{ - struct pn533_cmd_jump_dep_response *rsp; - u8 target_gt_len; - int rc; - u8 active = *(u8 *)arg; - - kfree(arg); - - if (IS_ERR(resp)) - return PTR_ERR(resp); - - if (dev->tgt_available_prots && - !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { - nfc_err(&dev->interface->dev, - "The target does not support DEP\n"); - rc = -EINVAL; - goto error; - } - - rsp = (struct pn533_cmd_jump_dep_response *)resp->data; - - rc = rsp->status & PN533_CMD_RET_MASK; - if (rc != PN533_CMD_RET_SUCCESS) { - nfc_err(&dev->interface->dev, - "Bringing DEP link up failed (error 0x%x)\n", rc); - goto error; - } - - if (!dev->tgt_available_prots) { - struct nfc_target nfc_target; - - dev_dbg(&dev->interface->dev, "Creating new target\n"); - - nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; - nfc_target.nfcid1_len = 10; - memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); - rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); - if (rc) - goto error; - - dev->tgt_available_prots = 0; - } - - dev->tgt_active_prot = NFC_PROTO_NFC_DEP; - - /* ATR_RES general bytes are located at offset 17 */ - target_gt_len = resp->len - 17; - rc = nfc_set_remote_general_bytes(dev->nfc_dev, - rsp->gt, target_gt_len); - if (rc == 0) - rc = nfc_dep_link_is_up(dev->nfc_dev, - dev->nfc_dev->targets[0].idx, - !active, NFC_RF_INITIATOR); - -error: - dev_kfree_skb(resp); - return rc; -} - -static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf); -static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, - u8 comm_mode, u8 *gb, size_t gb_len) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - struct sk_buff *skb; - int rc, skb_len; - u8 *next, *arg, nfcid3[NFC_NFCID3_MAXSIZE]; - u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (dev->poll_mod_count) { - nfc_err(&dev->interface->dev, - "Cannot bring the DEP link up while polling\n"); - return -EBUSY; - } - - if (dev->tgt_active_prot) { - nfc_err(&dev->interface->dev, - "There is already an active target\n"); - return -EBUSY; - } - - skb_len = 3 + gb_len; /* ActPass + BR + Next */ - skb_len += PASSIVE_DATA_LEN; - - /* NFCID3 */ - skb_len += NFC_NFCID3_MAXSIZE; - if (target && !target->nfcid2_len) { - nfcid3[0] = 0x1; - nfcid3[1] = 0xfe; - get_random_bytes(nfcid3 + 2, 6); - } - - skb = pn533_alloc_skb(dev, skb_len); - if (!skb) - return -ENOMEM; - - *skb_put(skb, 1) = !comm_mode; /* ActPass */ - *skb_put(skb, 1) = 0x02; /* 424 kbps */ - - next = skb_put(skb, 1); /* Next */ - *next = 0; - - /* Copy passive data */ - memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, PASSIVE_DATA_LEN); - *next |= 1; - - /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */ - if (target && target->nfcid2_len) - memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), target->nfcid2, - target->nfcid2_len); - else - memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), nfcid3, - NFC_NFCID3_MAXSIZE); - *next |= 2; - - if (gb != NULL && gb_len > 0) { - memcpy(skb_put(skb, gb_len), gb, gb_len); - *next |= 4; /* We have some Gi */ - } else { - *next = 0; - } - - arg = kmalloc(sizeof(*arg), GFP_KERNEL); - if (!arg) { - dev_kfree_skb(skb); - return -ENOMEM; - } - - *arg = !comm_mode; - - pn533_rf_field(dev->nfc_dev, 0); - - rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, - pn533_in_dep_link_up_complete, arg); - - if (rc < 0) { - dev_kfree_skb(skb); - kfree(arg); - } - - return rc; -} - -static int pn533_dep_link_down(struct nfc_dev *nfc_dev) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - pn533_poll_reset_mod_list(dev); - - if (dev->tgt_mode || dev->tgt_active_prot) - pn533_abort_cmd(dev, GFP_KERNEL); - - dev->tgt_active_prot = 0; - dev->tgt_mode = 0; - - skb_queue_purge(&dev->resp_q); - - return 0; -} - -struct pn533_data_exchange_arg { - data_exchange_cb_t cb; - void *cb_context; -}; - -static struct sk_buff *pn533_build_response(struct pn533 *dev) -{ - struct sk_buff *skb, *tmp, *t; - unsigned int skb_len = 0, tmp_len = 0; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (skb_queue_empty(&dev->resp_q)) - return NULL; - - if (skb_queue_len(&dev->resp_q) == 1) { - skb = skb_dequeue(&dev->resp_q); - goto out; - } - - skb_queue_walk_safe(&dev->resp_q, tmp, t) - skb_len += tmp->len; - - dev_dbg(&dev->interface->dev, "%s total length %d\n", - __func__, skb_len); - - skb = alloc_skb(skb_len, GFP_KERNEL); - if (skb == NULL) - goto out; - - skb_put(skb, skb_len); - - skb_queue_walk_safe(&dev->resp_q, tmp, t) { - memcpy(skb->data + tmp_len, tmp->data, tmp->len); - tmp_len += tmp->len; - } - -out: - skb_queue_purge(&dev->resp_q); - - return skb; -} - -static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, - struct sk_buff *resp) -{ - struct pn533_data_exchange_arg *arg = _arg; - struct sk_buff *skb; - int rc = 0; - u8 status, ret, mi; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (IS_ERR(resp)) { - rc = PTR_ERR(resp); - goto _error; - } - - status = resp->data[0]; - ret = status & PN533_CMD_RET_MASK; - mi = status & PN533_CMD_MI_MASK; - - skb_pull(resp, sizeof(status)); - - if (ret != PN533_CMD_RET_SUCCESS) { - nfc_err(&dev->interface->dev, - "Exchanging data failed (error 0x%x)\n", ret); - rc = -EIO; - goto error; - } - - skb_queue_tail(&dev->resp_q, resp); - - if (mi) { - dev->cmd_complete_mi_arg = arg; - queue_work(dev->wq, &dev->mi_rx_work); - return -EINPROGRESS; - } - - /* Prepare for the next round */ - if (skb_queue_len(&dev->fragment_skb) > 0) { - dev->cmd_complete_dep_arg = arg; - queue_work(dev->wq, &dev->mi_tx_work); - - return -EINPROGRESS; - } - - skb = pn533_build_response(dev); - if (!skb) { - rc = -ENOMEM; - goto error; - } - - arg->cb(arg->cb_context, skb, 0); - kfree(arg); - return 0; - -error: - dev_kfree_skb(resp); -_error: - skb_queue_purge(&dev->resp_q); - arg->cb(arg->cb_context, NULL, rc); - kfree(arg); - return rc; -} - -/* Split the Tx skb into small chunks */ -static int pn533_fill_fragment_skbs(struct pn533 *dev, struct sk_buff *skb) -{ - struct sk_buff *frag; - int frag_size; - - do { - /* Remaining size */ - if (skb->len > PN533_CMD_DATAFRAME_MAXLEN) - frag_size = PN533_CMD_DATAFRAME_MAXLEN; - else - frag_size = skb->len; - - /* Allocate and reserve */ - frag = pn533_alloc_skb(dev, frag_size); - if (!frag) { - skb_queue_purge(&dev->fragment_skb); - break; - } - - if (!dev->tgt_mode) { - /* Reserve the TG/MI byte */ - skb_reserve(frag, 1); - - /* MI + TG */ - if (frag_size == PN533_CMD_DATAFRAME_MAXLEN) - *skb_push(frag, sizeof(u8)) = - (PN533_CMD_MI_MASK | 1); - else - *skb_push(frag, sizeof(u8)) = 1; /* TG */ - } - - memcpy(skb_put(frag, frag_size), skb->data, frag_size); - - /* Reduce the size of incoming buffer */ - skb_pull(skb, frag_size); - - /* Add this to skb_queue */ - skb_queue_tail(&dev->fragment_skb, frag); - - } while (skb->len > 0); - - dev_kfree_skb(skb); - - return skb_queue_len(&dev->fragment_skb); -} - -static int pn533_transceive(struct nfc_dev *nfc_dev, - struct nfc_target *target, struct sk_buff *skb, - data_exchange_cb_t cb, void *cb_context) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - struct pn533_data_exchange_arg *arg = NULL; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (!dev->tgt_active_prot) { - nfc_err(&dev->interface->dev, - "Can't exchange data if there is no active target\n"); - rc = -EINVAL; - goto error; - } - - arg = kmalloc(sizeof(*arg), GFP_KERNEL); - if (!arg) { - rc = -ENOMEM; - goto error; - } - - arg->cb = cb; - arg->cb_context = cb_context; - - switch (dev->device_type) { - case PN533_DEVICE_PASORI: - if (dev->tgt_active_prot == NFC_PROTO_FELICA) { - rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU, - skb, - pn533_data_exchange_complete, - arg); - - break; - } - default: - /* jumbo frame ? */ - if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { - rc = pn533_fill_fragment_skbs(dev, skb); - if (rc <= 0) - goto error; - - skb = skb_dequeue(&dev->fragment_skb); - if (!skb) { - rc = -EIO; - goto error; - } - } else { - *skb_push(skb, sizeof(u8)) = 1; /* TG */ - } - - rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, - skb, pn533_data_exchange_complete, - arg); - - break; - } - - if (rc < 0) /* rc from send_async */ - goto error; - - return 0; - -error: - kfree(arg); - dev_kfree_skb(skb); - return rc; -} - -static int pn533_tm_send_complete(struct pn533 *dev, void *arg, - struct sk_buff *resp) -{ - u8 status; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - if (IS_ERR(resp)) - return PTR_ERR(resp); - - status = resp->data[0]; - - /* Prepare for the next round */ - if (skb_queue_len(&dev->fragment_skb) > 0) { - queue_work(dev->wq, &dev->mi_tm_tx_work); - return -EINPROGRESS; - } - dev_kfree_skb(resp); - - if (status != 0) { - nfc_tm_deactivated(dev->nfc_dev); - - dev->tgt_mode = 0; - - return 0; - } - - queue_work(dev->wq, &dev->tg_work); - - return 0; -} - -static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - /* let's split in multiple chunks if size's too big */ - if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { - rc = pn533_fill_fragment_skbs(dev, skb); - if (rc <= 0) - goto error; - - /* get the first skb */ - skb = skb_dequeue(&dev->fragment_skb); - if (!skb) { - rc = -EIO; - goto error; - } - - rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_META_DATA, skb, - pn533_tm_send_complete, NULL); - } else { - /* Send th skb */ - rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb, - pn533_tm_send_complete, NULL); - } - -error: - if (rc < 0) { - dev_kfree_skb(skb); - skb_queue_purge(&dev->fragment_skb); - } - - return rc; -} - -static void pn533_wq_mi_recv(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, mi_rx_work); - struct sk_buff *skb; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN); - if (!skb) - goto error; - - switch (dev->device_type) { - case PN533_DEVICE_PASORI: - if (dev->tgt_active_prot == NFC_PROTO_FELICA) { - rc = pn533_send_cmd_direct_async(dev, - PN533_CMD_IN_COMM_THRU, - skb, - pn533_data_exchange_complete, - dev->cmd_complete_mi_arg); - - break; - } - default: - *skb_put(skb, sizeof(u8)) = 1; /*TG*/ - - rc = pn533_send_cmd_direct_async(dev, - PN533_CMD_IN_DATA_EXCHANGE, - skb, - pn533_data_exchange_complete, - dev->cmd_complete_mi_arg); - - break; - } - - if (rc == 0) /* success */ - return; - - nfc_err(&dev->interface->dev, - "Error %d when trying to perform data_exchange\n", rc); - - dev_kfree_skb(skb); - kfree(dev->cmd_complete_mi_arg); - -error: - pn533_send_ack(dev, GFP_KERNEL); - queue_work(dev->wq, &dev->cmd_work); -} - -static void pn533_wq_mi_send(struct work_struct *work) -{ - struct pn533 *dev = container_of(work, struct pn533, mi_tx_work); - struct sk_buff *skb; - int rc; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - /* Grab the first skb in the queue */ - skb = skb_dequeue(&dev->fragment_skb); - - if (skb == NULL) { /* No more data */ - /* Reset the queue for future use */ - skb_queue_head_init(&dev->fragment_skb); - goto error; - } - - switch (dev->device_type) { - case PN533_DEVICE_PASORI: - if (dev->tgt_active_prot != NFC_PROTO_FELICA) { - rc = -EIO; - break; - } - - rc = pn533_send_cmd_direct_async(dev, PN533_CMD_IN_COMM_THRU, - skb, - pn533_data_exchange_complete, - dev->cmd_complete_dep_arg); - - break; - - default: - /* Still some fragments? */ - rc = pn533_send_cmd_direct_async(dev,PN533_CMD_IN_DATA_EXCHANGE, - skb, - pn533_data_exchange_complete, - dev->cmd_complete_dep_arg); - - break; - } - - if (rc == 0) /* success */ - return; - - nfc_err(&dev->interface->dev, - "Error %d when trying to perform data_exchange\n", rc); - - dev_kfree_skb(skb); - kfree(dev->cmd_complete_dep_arg); - -error: - pn533_send_ack(dev, GFP_KERNEL); - queue_work(dev->wq, &dev->cmd_work); -} - -static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, - u8 cfgdata_len) -{ - struct sk_buff *skb; - struct sk_buff *resp; - int skb_len; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */ - - skb = pn533_alloc_skb(dev, skb_len); - if (!skb) - return -ENOMEM; - - *skb_put(skb, sizeof(cfgitem)) = cfgitem; - memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len); - - resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); - if (IS_ERR(resp)) - return PTR_ERR(resp); - - dev_kfree_skb(resp); - return 0; -} - -static int pn533_get_firmware_version(struct pn533 *dev, - struct pn533_fw_version *fv) -{ - struct sk_buff *skb; - struct sk_buff *resp; - - skb = pn533_alloc_skb(dev, 0); - if (!skb) - return -ENOMEM; - - resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb); - if (IS_ERR(resp)) - return PTR_ERR(resp); - - fv->ic = resp->data[0]; - fv->ver = resp->data[1]; - fv->rev = resp->data[2]; - fv->support = resp->data[3]; - - dev_kfree_skb(resp); - return 0; -} - -static int pn533_pasori_fw_reset(struct pn533 *dev) -{ - struct sk_buff *skb; - struct sk_buff *resp; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - skb = pn533_alloc_skb(dev, sizeof(u8)); - if (!skb) - return -ENOMEM; - - *skb_put(skb, sizeof(u8)) = 0x1; - - resp = pn533_send_cmd_sync(dev, 0x18, skb); - if (IS_ERR(resp)) - return PTR_ERR(resp); - - dev_kfree_skb(resp); - - return 0; -} - -struct pn533_acr122_poweron_rdr_arg { - int rc; - struct completion done; -}; - -static void pn533_acr122_poweron_rdr_resp(struct urb *urb) -{ - struct pn533_acr122_poweron_rdr_arg *arg = urb->context; - - dev_dbg(&urb->dev->dev, "%s\n", __func__); - - print_hex_dump_debug("ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1, - urb->transfer_buffer, urb->transfer_buffer_length, - false); - - arg->rc = urb->status; - complete(&arg->done); -} - -static int pn533_acr122_poweron_rdr(struct pn533 *dev) -{ - /* Power on th reader (CCID cmd) */ - u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON, - 0, 0, 0, 0, 0, 0, 3, 0, 0}; - u8 buf[255]; - int rc; - void *cntx; - struct pn533_acr122_poweron_rdr_arg arg; - - dev_dbg(&dev->interface->dev, "%s\n", __func__); - - init_completion(&arg.done); - cntx = dev->in_urb->context; /* backup context */ - - dev->in_urb->transfer_buffer = buf; - dev->in_urb->transfer_buffer_length = 255; - dev->in_urb->complete = pn533_acr122_poweron_rdr_resp; - dev->in_urb->context = &arg; - - dev->out_urb->transfer_buffer = cmd; - dev->out_urb->transfer_buffer_length = sizeof(cmd); - - print_hex_dump_debug("ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1, - cmd, sizeof(cmd), false); - - rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); - if (rc) { - nfc_err(&dev->interface->dev, - "Reader power on cmd error %d\n", rc); - return rc; - } - - rc = usb_submit_urb(dev->in_urb, GFP_KERNEL); - if (rc) { - nfc_err(&dev->interface->dev, - "Can't submit reader poweron cmd response %d\n", rc); - return rc; - } - - wait_for_completion(&arg.done); - dev->in_urb->context = cntx; /* restore context */ - - return arg.rc; -} - -static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf) -{ - struct pn533 *dev = nfc_get_drvdata(nfc_dev); - u8 rf_field = !!rf; - int rc; - - rf_field |= PN533_CFGITEM_RF_FIELD_AUTO_RFCA; - - rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD, - (u8 *)&rf_field, 1); - if (rc) { - nfc_err(&dev->interface->dev, "Error on setting RF field\n"); - return rc; - } - - return rc; -} - -static int pn533_dev_up(struct nfc_dev *nfc_dev) -{ - return pn533_rf_field(nfc_dev, 1); -} - -static int pn533_dev_down(struct nfc_dev *nfc_dev) -{ - return pn533_rf_field(nfc_dev, 0); -} - -static struct nfc_ops pn533_nfc_ops = { - .dev_up = pn533_dev_up, - .dev_down = pn533_dev_down, - .dep_link_up = pn533_dep_link_up, - .dep_link_down = pn533_dep_link_down, - .start_poll = pn533_start_poll, - .stop_poll = pn533_stop_poll, - .activate_target = pn533_activate_target, - .deactivate_target = pn533_deactivate_target, - .im_transceive = pn533_transceive, - .tm_send = pn533_tm_send, -}; - -static int pn533_setup(struct pn533 *dev) -{ - struct pn533_config_max_retries max_retries; - struct pn533_config_timing timing; - u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; - int rc; - - switch (dev->device_type) { - case PN533_DEVICE_STD: - case PN533_DEVICE_PASORI: - case PN533_DEVICE_ACR122U: - max_retries.mx_rty_atr = 0x2; - max_retries.mx_rty_psl = 0x1; - max_retries.mx_rty_passive_act = - PN533_CONFIG_MAX_RETRIES_NO_RETRY; - - timing.rfu = PN533_CONFIG_TIMING_102; - timing.atr_res_timeout = PN533_CONFIG_TIMING_102; - timing.dep_timeout = PN533_CONFIG_TIMING_204; - - break; - - default: - nfc_err(&dev->interface->dev, "Unknown device type %d\n", - dev->device_type); - return -EINVAL; - } - - rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, - (u8 *)&max_retries, sizeof(max_retries)); - if (rc) { - nfc_err(&dev->interface->dev, - "Error on setting MAX_RETRIES config\n"); - return rc; - } - - - rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, - (u8 *)&timing, sizeof(timing)); - if (rc) { - nfc_err(&dev->interface->dev, "Error on setting RF timings\n"); - return rc; - } - - switch (dev->device_type) { - case PN533_DEVICE_STD: - break; - - case PN533_DEVICE_PASORI: - pn533_pasori_fw_reset(dev); - - rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, - pasori_cfg, 3); - if (rc) { - nfc_err(&dev->interface->dev, - "Error while settings PASORI config\n"); - return rc; - } - - pn533_pasori_fw_reset(dev); - - break; - } - - return 0; -} - -static int pn533_probe(struct usb_interface *interface, - const struct usb_device_id *id) -{ - struct pn533_fw_version fw_ver; - struct pn533 *dev; - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - int in_endpoint = 0; - int out_endpoint = 0; - int rc = -ENOMEM; - int i; - u32 protocols; - - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return -ENOMEM; - - dev->udev = usb_get_dev(interface_to_usbdev(interface)); - dev->interface = interface; - mutex_init(&dev->cmd_lock); - - iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) - in_endpoint = endpoint->bEndpointAddress; - - if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) - out_endpoint = endpoint->bEndpointAddress; - } - - if (!in_endpoint || !out_endpoint) { - nfc_err(&interface->dev, - "Could not find bulk-in or bulk-out endpoint\n"); - rc = -ENODEV; - goto error; - } - - dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); - dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); - - if (!dev->in_urb || !dev->out_urb) - goto error; - - usb_fill_bulk_urb(dev->in_urb, dev->udev, - usb_rcvbulkpipe(dev->udev, in_endpoint), - NULL, 0, NULL, dev); - usb_fill_bulk_urb(dev->out_urb, dev->udev, - usb_sndbulkpipe(dev->udev, out_endpoint), - NULL, 0, pn533_send_complete, dev); - - INIT_WORK(&dev->cmd_work, pn533_wq_cmd); - INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); - INIT_WORK(&dev->mi_rx_work, pn533_wq_mi_recv); - INIT_WORK(&dev->mi_tx_work, pn533_wq_mi_send); - INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); - INIT_WORK(&dev->mi_tm_rx_work, pn533_wq_tm_mi_recv); - INIT_WORK(&dev->mi_tm_tx_work, pn533_wq_tm_mi_send); - INIT_DELAYED_WORK(&dev->poll_work, pn533_wq_poll); - INIT_WORK(&dev->rf_work, pn533_wq_rf); - dev->wq = alloc_ordered_workqueue("pn533", 0); - if (dev->wq == NULL) - goto error; - - init_timer(&dev->listen_timer); - dev->listen_timer.data = (unsigned long) dev; - dev->listen_timer.function = pn533_listen_mode_timer; - - skb_queue_head_init(&dev->resp_q); - skb_queue_head_init(&dev->fragment_skb); - - INIT_LIST_HEAD(&dev->cmd_queue); - - usb_set_intfdata(interface, dev); - - dev->ops = &pn533_std_frame_ops; - - dev->protocol_type = PN533_PROTO_REQ_ACK_RESP; - dev->device_type = id->driver_info; - switch (dev->device_type) { - case PN533_DEVICE_STD: - protocols = PN533_ALL_PROTOCOLS; - break; - - case PN533_DEVICE_PASORI: - protocols = PN533_NO_TYPE_B_PROTOCOLS; - break; - - case PN533_DEVICE_ACR122U: - protocols = PN533_NO_TYPE_B_PROTOCOLS; - dev->ops = &pn533_acr122_frame_ops; - dev->protocol_type = PN533_PROTO_REQ_RESP, - - rc = pn533_acr122_poweron_rdr(dev); - if (rc < 0) { - nfc_err(&dev->interface->dev, - "Couldn't poweron the reader (error %d)\n", rc); - goto destroy_wq; - } - break; - - default: - nfc_err(&dev->interface->dev, "Unknown device type %d\n", - dev->device_type); - rc = -EINVAL; - goto destroy_wq; - } - - memset(&fw_ver, 0, sizeof(fw_ver)); - rc = pn533_get_firmware_version(dev, &fw_ver); - if (rc < 0) - goto destroy_wq; - - nfc_info(&dev->interface->dev, - "NXP PN5%02X firmware ver %d.%d now attached\n", - fw_ver.ic, fw_ver.ver, fw_ver.rev); - - - dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, - dev->ops->tx_header_len + - PN533_CMD_DATAEXCH_HEAD_LEN, - dev->ops->tx_tail_len); - if (!dev->nfc_dev) { - rc = -ENOMEM; - goto destroy_wq; - } - - nfc_set_parent_dev(dev->nfc_dev, &interface->dev); - nfc_set_drvdata(dev->nfc_dev, dev); - - rc = nfc_register_device(dev->nfc_dev); - if (rc) - goto free_nfc_dev; - - rc = pn533_setup(dev); - if (rc) - goto unregister_nfc_dev; - - return 0; - -unregister_nfc_dev: - nfc_unregister_device(dev->nfc_dev); - -free_nfc_dev: - nfc_free_device(dev->nfc_dev); - -destroy_wq: - destroy_workqueue(dev->wq); -error: - usb_free_urb(dev->in_urb); - usb_free_urb(dev->out_urb); - usb_put_dev(dev->udev); - kfree(dev); - return rc; -} - -static void pn533_disconnect(struct usb_interface *interface) -{ - struct pn533 *dev; - struct pn533_cmd *cmd, *n; - - dev = usb_get_intfdata(interface); - usb_set_intfdata(interface, NULL); - - nfc_unregister_device(dev->nfc_dev); - nfc_free_device(dev->nfc_dev); - - usb_kill_urb(dev->in_urb); - usb_kill_urb(dev->out_urb); - - flush_delayed_work(&dev->poll_work); - destroy_workqueue(dev->wq); - - skb_queue_purge(&dev->resp_q); - - del_timer(&dev->listen_timer); - - list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { - list_del(&cmd->queue); - kfree(cmd); - } - - usb_free_urb(dev->in_urb); - usb_free_urb(dev->out_urb); - kfree(dev); - - nfc_info(&interface->dev, "NXP PN533 NFC device disconnected\n"); -} - -static struct usb_driver pn533_driver = { - .name = "pn533", - .probe = pn533_probe, - .disconnect = pn533_disconnect, - .id_table = pn533_table, -}; - -module_usb_driver(pn533_driver); - -MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); -MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); -MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>"); -MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); -MODULE_VERSION(VERSION); -MODULE_LICENSE("GPL"); |