16a2968aaSIlan Elias /* 26a2968aaSIlan Elias * The NFC Controller Interface is the communication protocol between an 36a2968aaSIlan Elias * NFC Controller (NFCC) and a Device Host (DH). 46a2968aaSIlan Elias * 56a2968aaSIlan Elias * Copyright (C) 2011 Texas Instruments, Inc. 66a2968aaSIlan Elias * 76a2968aaSIlan Elias * Written by Ilan Elias <ilane@ti.com> 86a2968aaSIlan Elias * 96a2968aaSIlan Elias * Acknowledgements: 106a2968aaSIlan Elias * This file is based on hci_core.c, which was written 116a2968aaSIlan Elias * by Maxim Krasnyansky. 126a2968aaSIlan Elias * 136a2968aaSIlan Elias * This program is free software; you can redistribute it and/or modify 146a2968aaSIlan Elias * it under the terms of the GNU General Public License version 2 156a2968aaSIlan Elias * as published by the Free Software Foundation 166a2968aaSIlan Elias * 176a2968aaSIlan Elias * This program is distributed in the hope that it will be useful, 186a2968aaSIlan Elias * but WITHOUT ANY WARRANTY; without even the implied warranty of 196a2968aaSIlan Elias * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 206a2968aaSIlan Elias * GNU General Public License for more details. 216a2968aaSIlan Elias * 226a2968aaSIlan Elias * You should have received a copy of the GNU General Public License 236a2968aaSIlan Elias * along with this program; if not, write to the Free Software 246a2968aaSIlan Elias * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 256a2968aaSIlan Elias * 266a2968aaSIlan Elias */ 276a2968aaSIlan Elias 286a2968aaSIlan Elias #include <linux/types.h> 296a2968aaSIlan Elias #include <linux/workqueue.h> 306a2968aaSIlan Elias #include <linux/completion.h> 316a2968aaSIlan Elias #include <linux/sched.h> 326a2968aaSIlan Elias #include <linux/bitops.h> 336a2968aaSIlan Elias #include <linux/skbuff.h> 346a2968aaSIlan Elias 356a2968aaSIlan Elias #include "../nfc.h" 366a2968aaSIlan Elias #include <net/nfc/nci.h> 376a2968aaSIlan Elias #include <net/nfc/nci_core.h> 386a2968aaSIlan Elias #include <linux/nfc.h> 396a2968aaSIlan Elias 406a2968aaSIlan Elias static void nci_cmd_work(struct work_struct *work); 416a2968aaSIlan Elias static void nci_rx_work(struct work_struct *work); 426a2968aaSIlan Elias static void nci_tx_work(struct work_struct *work); 436a2968aaSIlan Elias 446a2968aaSIlan Elias /* ---- NCI requests ---- */ 456a2968aaSIlan Elias 466a2968aaSIlan Elias void nci_req_complete(struct nci_dev *ndev, int result) 476a2968aaSIlan Elias { 486a2968aaSIlan Elias if (ndev->req_status == NCI_REQ_PEND) { 496a2968aaSIlan Elias ndev->req_result = result; 506a2968aaSIlan Elias ndev->req_status = NCI_REQ_DONE; 516a2968aaSIlan Elias complete(&ndev->req_completion); 526a2968aaSIlan Elias } 536a2968aaSIlan Elias } 546a2968aaSIlan Elias 556a2968aaSIlan Elias static void nci_req_cancel(struct nci_dev *ndev, int err) 566a2968aaSIlan Elias { 576a2968aaSIlan Elias if (ndev->req_status == NCI_REQ_PEND) { 586a2968aaSIlan Elias ndev->req_result = err; 596a2968aaSIlan Elias ndev->req_status = NCI_REQ_CANCELED; 606a2968aaSIlan Elias complete(&ndev->req_completion); 616a2968aaSIlan Elias } 626a2968aaSIlan Elias } 636a2968aaSIlan Elias 646a2968aaSIlan Elias /* Execute request and wait for completion. */ 656a2968aaSIlan Elias static int __nci_request(struct nci_dev *ndev, 666a2968aaSIlan Elias void (*req)(struct nci_dev *ndev, unsigned long opt), 676a2968aaSIlan Elias unsigned long opt, 686a2968aaSIlan Elias __u32 timeout) 696a2968aaSIlan Elias { 706a2968aaSIlan Elias int rc = 0; 716a2968aaSIlan Elias unsigned long completion_rc; 726a2968aaSIlan Elias 736a2968aaSIlan Elias ndev->req_status = NCI_REQ_PEND; 746a2968aaSIlan Elias 756a2968aaSIlan Elias init_completion(&ndev->req_completion); 766a2968aaSIlan Elias req(ndev, opt); 776a2968aaSIlan Elias completion_rc = wait_for_completion_interruptible_timeout( 786a2968aaSIlan Elias &ndev->req_completion, 796a2968aaSIlan Elias timeout); 806a2968aaSIlan Elias 816a2968aaSIlan Elias nfc_dbg("wait_for_completion return %ld", completion_rc); 826a2968aaSIlan Elias 836a2968aaSIlan Elias if (completion_rc > 0) { 846a2968aaSIlan Elias switch (ndev->req_status) { 856a2968aaSIlan Elias case NCI_REQ_DONE: 866a2968aaSIlan Elias rc = nci_to_errno(ndev->req_result); 876a2968aaSIlan Elias break; 886a2968aaSIlan Elias 896a2968aaSIlan Elias case NCI_REQ_CANCELED: 906a2968aaSIlan Elias rc = -ndev->req_result; 916a2968aaSIlan Elias break; 926a2968aaSIlan Elias 936a2968aaSIlan Elias default: 946a2968aaSIlan Elias rc = -ETIMEDOUT; 956a2968aaSIlan Elias break; 966a2968aaSIlan Elias } 976a2968aaSIlan Elias } else { 986a2968aaSIlan Elias nfc_err("wait_for_completion_interruptible_timeout failed %ld", 996a2968aaSIlan Elias completion_rc); 1006a2968aaSIlan Elias 1016a2968aaSIlan Elias rc = ((completion_rc == 0) ? (-ETIMEDOUT) : (completion_rc)); 1026a2968aaSIlan Elias } 1036a2968aaSIlan Elias 1046a2968aaSIlan Elias ndev->req_status = ndev->req_result = 0; 1056a2968aaSIlan Elias 1066a2968aaSIlan Elias return rc; 1076a2968aaSIlan Elias } 1086a2968aaSIlan Elias 1096a2968aaSIlan Elias static inline int nci_request(struct nci_dev *ndev, 1106a2968aaSIlan Elias void (*req)(struct nci_dev *ndev, unsigned long opt), 1116a2968aaSIlan Elias unsigned long opt, __u32 timeout) 1126a2968aaSIlan Elias { 1136a2968aaSIlan Elias int rc; 1146a2968aaSIlan Elias 1156a2968aaSIlan Elias if (!test_bit(NCI_UP, &ndev->flags)) 1166a2968aaSIlan Elias return -ENETDOWN; 1176a2968aaSIlan Elias 1186a2968aaSIlan Elias /* Serialize all requests */ 1196a2968aaSIlan Elias mutex_lock(&ndev->req_lock); 1206a2968aaSIlan Elias rc = __nci_request(ndev, req, opt, timeout); 1216a2968aaSIlan Elias mutex_unlock(&ndev->req_lock); 1226a2968aaSIlan Elias 1236a2968aaSIlan Elias return rc; 1246a2968aaSIlan Elias } 1256a2968aaSIlan Elias 1266a2968aaSIlan Elias static void nci_reset_req(struct nci_dev *ndev, unsigned long opt) 1276a2968aaSIlan Elias { 1286a2968aaSIlan Elias nci_send_cmd(ndev, NCI_OP_CORE_RESET_CMD, 0, NULL); 1296a2968aaSIlan Elias } 1306a2968aaSIlan Elias 1316a2968aaSIlan Elias static void nci_init_req(struct nci_dev *ndev, unsigned long opt) 1326a2968aaSIlan Elias { 1336a2968aaSIlan Elias nci_send_cmd(ndev, NCI_OP_CORE_INIT_CMD, 0, NULL); 1346a2968aaSIlan Elias } 1356a2968aaSIlan Elias 1366a2968aaSIlan Elias static void nci_init_complete_req(struct nci_dev *ndev, unsigned long opt) 1376a2968aaSIlan Elias { 1386a2968aaSIlan Elias struct nci_core_conn_create_cmd conn_cmd; 1392eb1dc10SIlan Elias struct nci_rf_disc_map_cmd cmd; 1402eb1dc10SIlan Elias struct disc_map_config *cfg = cmd.mapping_configs; 1412eb1dc10SIlan Elias __u8 *num = &cmd.num_mapping_configs; 1426a2968aaSIlan Elias int i; 1436a2968aaSIlan Elias 1446a2968aaSIlan Elias /* create static rf connection */ 1456a2968aaSIlan Elias conn_cmd.target_handle = 0; 1466a2968aaSIlan Elias conn_cmd.num_target_specific_params = 0; 1476a2968aaSIlan Elias nci_send_cmd(ndev, NCI_OP_CORE_CONN_CREATE_CMD, 2, &conn_cmd); 1486a2968aaSIlan Elias 1496a2968aaSIlan Elias /* set rf mapping configurations */ 1502eb1dc10SIlan Elias *num = 0; 1516a2968aaSIlan Elias 1526a2968aaSIlan Elias /* by default mapping is set to NCI_RF_INTERFACE_FRAME */ 1536a2968aaSIlan Elias for (i = 0; i < ndev->num_supported_rf_interfaces; i++) { 1546a2968aaSIlan Elias if (ndev->supported_rf_interfaces[i] == 1556a2968aaSIlan Elias NCI_RF_INTERFACE_ISO_DEP) { 1562eb1dc10SIlan Elias cfg[*num].rf_protocol = NCI_RF_PROTOCOL_ISO_DEP; 1572eb1dc10SIlan Elias cfg[*num].mode = NCI_DISC_MAP_MODE_BOTH; 1582eb1dc10SIlan Elias cfg[*num].rf_interface_type = NCI_RF_INTERFACE_ISO_DEP; 1592eb1dc10SIlan Elias (*num)++; 1606a2968aaSIlan Elias } else if (ndev->supported_rf_interfaces[i] == 1616a2968aaSIlan Elias NCI_RF_INTERFACE_NFC_DEP) { 1622eb1dc10SIlan Elias cfg[*num].rf_protocol = NCI_RF_PROTOCOL_NFC_DEP; 1632eb1dc10SIlan Elias cfg[*num].mode = NCI_DISC_MAP_MODE_BOTH; 1642eb1dc10SIlan Elias cfg[*num].rf_interface_type = NCI_RF_INTERFACE_NFC_DEP; 1652eb1dc10SIlan Elias (*num)++; 1666a2968aaSIlan Elias } 1676a2968aaSIlan Elias 1682eb1dc10SIlan Elias if (*num == NCI_MAX_NUM_MAPPING_CONFIGS) 1696a2968aaSIlan Elias break; 1706a2968aaSIlan Elias } 1716a2968aaSIlan Elias 1726a2968aaSIlan Elias nci_send_cmd(ndev, NCI_OP_RF_DISCOVER_MAP_CMD, 1732eb1dc10SIlan Elias (1 + ((*num)*sizeof(struct disc_map_config))), 1746a2968aaSIlan Elias &cmd); 1756a2968aaSIlan Elias } 1766a2968aaSIlan Elias 1776a2968aaSIlan Elias static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt) 1786a2968aaSIlan Elias { 1796a2968aaSIlan Elias struct nci_rf_disc_cmd cmd; 1806a2968aaSIlan Elias __u32 protocols = opt; 1816a2968aaSIlan Elias 1826a2968aaSIlan Elias cmd.num_disc_configs = 0; 1836a2968aaSIlan Elias 1846a2968aaSIlan Elias if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) && 1856a2968aaSIlan Elias (protocols & NFC_PROTO_JEWEL_MASK 1866a2968aaSIlan Elias || protocols & NFC_PROTO_MIFARE_MASK 1876a2968aaSIlan Elias || protocols & NFC_PROTO_ISO14443_MASK 1886a2968aaSIlan Elias || protocols & NFC_PROTO_NFC_DEP_MASK)) { 1896a2968aaSIlan Elias cmd.disc_configs[cmd.num_disc_configs].type = 1906a2968aaSIlan Elias NCI_DISCOVERY_TYPE_POLL_A_PASSIVE; 1916a2968aaSIlan Elias cmd.disc_configs[cmd.num_disc_configs].frequency = 1; 1926a2968aaSIlan Elias cmd.num_disc_configs++; 1936a2968aaSIlan Elias } 1946a2968aaSIlan Elias 1956a2968aaSIlan Elias if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) && 1966a2968aaSIlan Elias (protocols & NFC_PROTO_ISO14443_MASK)) { 1976a2968aaSIlan Elias cmd.disc_configs[cmd.num_disc_configs].type = 1986a2968aaSIlan Elias NCI_DISCOVERY_TYPE_POLL_B_PASSIVE; 1996a2968aaSIlan Elias cmd.disc_configs[cmd.num_disc_configs].frequency = 1; 2006a2968aaSIlan Elias cmd.num_disc_configs++; 2016a2968aaSIlan Elias } 2026a2968aaSIlan Elias 2036a2968aaSIlan Elias if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) && 2046a2968aaSIlan Elias (protocols & NFC_PROTO_FELICA_MASK 2056a2968aaSIlan Elias || protocols & NFC_PROTO_NFC_DEP_MASK)) { 2066a2968aaSIlan Elias cmd.disc_configs[cmd.num_disc_configs].type = 2076a2968aaSIlan Elias NCI_DISCOVERY_TYPE_POLL_F_PASSIVE; 2086a2968aaSIlan Elias cmd.disc_configs[cmd.num_disc_configs].frequency = 1; 2096a2968aaSIlan Elias cmd.num_disc_configs++; 2106a2968aaSIlan Elias } 2116a2968aaSIlan Elias 2126a2968aaSIlan Elias nci_send_cmd(ndev, NCI_OP_RF_DISCOVER_CMD, 2136a2968aaSIlan Elias (1 + (cmd.num_disc_configs*sizeof(struct disc_config))), 2146a2968aaSIlan Elias &cmd); 2156a2968aaSIlan Elias } 2166a2968aaSIlan Elias 2176a2968aaSIlan Elias static void nci_rf_deactivate_req(struct nci_dev *ndev, unsigned long opt) 2186a2968aaSIlan Elias { 2196a2968aaSIlan Elias struct nci_rf_deactivate_cmd cmd; 2206a2968aaSIlan Elias 2216a2968aaSIlan Elias cmd.type = NCI_DEACTIVATE_TYPE_IDLE_MODE; 2226a2968aaSIlan Elias 2236a2968aaSIlan Elias nci_send_cmd(ndev, NCI_OP_RF_DEACTIVATE_CMD, 2246a2968aaSIlan Elias sizeof(struct nci_rf_deactivate_cmd), 2256a2968aaSIlan Elias &cmd); 2266a2968aaSIlan Elias } 2276a2968aaSIlan Elias 2286a2968aaSIlan Elias static int nci_open_device(struct nci_dev *ndev) 2296a2968aaSIlan Elias { 2306a2968aaSIlan Elias int rc = 0; 2316a2968aaSIlan Elias 2326a2968aaSIlan Elias mutex_lock(&ndev->req_lock); 2336a2968aaSIlan Elias 2346a2968aaSIlan Elias if (test_bit(NCI_UP, &ndev->flags)) { 2356a2968aaSIlan Elias rc = -EALREADY; 2366a2968aaSIlan Elias goto done; 2376a2968aaSIlan Elias } 2386a2968aaSIlan Elias 2396a2968aaSIlan Elias if (ndev->ops->open(ndev)) { 2406a2968aaSIlan Elias rc = -EIO; 2416a2968aaSIlan Elias goto done; 2426a2968aaSIlan Elias } 2436a2968aaSIlan Elias 2446a2968aaSIlan Elias atomic_set(&ndev->cmd_cnt, 1); 2456a2968aaSIlan Elias 2466a2968aaSIlan Elias set_bit(NCI_INIT, &ndev->flags); 2476a2968aaSIlan Elias 2486a2968aaSIlan Elias rc = __nci_request(ndev, nci_reset_req, 0, 2496a2968aaSIlan Elias msecs_to_jiffies(NCI_RESET_TIMEOUT)); 2506a2968aaSIlan Elias 2516a2968aaSIlan Elias if (!rc) { 2526a2968aaSIlan Elias rc = __nci_request(ndev, nci_init_req, 0, 2536a2968aaSIlan Elias msecs_to_jiffies(NCI_INIT_TIMEOUT)); 2546a2968aaSIlan Elias } 2556a2968aaSIlan Elias 2566a2968aaSIlan Elias if (!rc) { 2576a2968aaSIlan Elias rc = __nci_request(ndev, nci_init_complete_req, 0, 2586a2968aaSIlan Elias msecs_to_jiffies(NCI_INIT_TIMEOUT)); 2596a2968aaSIlan Elias } 2606a2968aaSIlan Elias 2616a2968aaSIlan Elias clear_bit(NCI_INIT, &ndev->flags); 2626a2968aaSIlan Elias 2636a2968aaSIlan Elias if (!rc) { 2646a2968aaSIlan Elias set_bit(NCI_UP, &ndev->flags); 2656a2968aaSIlan Elias } else { 2666a2968aaSIlan Elias /* Init failed, cleanup */ 2676a2968aaSIlan Elias skb_queue_purge(&ndev->cmd_q); 2686a2968aaSIlan Elias skb_queue_purge(&ndev->rx_q); 2696a2968aaSIlan Elias skb_queue_purge(&ndev->tx_q); 2706a2968aaSIlan Elias 2716a2968aaSIlan Elias ndev->ops->close(ndev); 2726a2968aaSIlan Elias ndev->flags = 0; 2736a2968aaSIlan Elias } 2746a2968aaSIlan Elias 2756a2968aaSIlan Elias done: 2766a2968aaSIlan Elias mutex_unlock(&ndev->req_lock); 2776a2968aaSIlan Elias return rc; 2786a2968aaSIlan Elias } 2796a2968aaSIlan Elias 2806a2968aaSIlan Elias static int nci_close_device(struct nci_dev *ndev) 2816a2968aaSIlan Elias { 2826a2968aaSIlan Elias nci_req_cancel(ndev, ENODEV); 2836a2968aaSIlan Elias mutex_lock(&ndev->req_lock); 2846a2968aaSIlan Elias 2856a2968aaSIlan Elias if (!test_and_clear_bit(NCI_UP, &ndev->flags)) { 2866a2968aaSIlan Elias del_timer_sync(&ndev->cmd_timer); 2876a2968aaSIlan Elias mutex_unlock(&ndev->req_lock); 2886a2968aaSIlan Elias return 0; 2896a2968aaSIlan Elias } 2906a2968aaSIlan Elias 2916a2968aaSIlan Elias /* Drop RX and TX queues */ 2926a2968aaSIlan Elias skb_queue_purge(&ndev->rx_q); 2936a2968aaSIlan Elias skb_queue_purge(&ndev->tx_q); 2946a2968aaSIlan Elias 2956a2968aaSIlan Elias /* Flush RX and TX wq */ 2966a2968aaSIlan Elias flush_workqueue(ndev->rx_wq); 2976a2968aaSIlan Elias flush_workqueue(ndev->tx_wq); 2986a2968aaSIlan Elias 2996a2968aaSIlan Elias /* Reset device */ 3006a2968aaSIlan Elias skb_queue_purge(&ndev->cmd_q); 3016a2968aaSIlan Elias atomic_set(&ndev->cmd_cnt, 1); 3026a2968aaSIlan Elias 3036a2968aaSIlan Elias set_bit(NCI_INIT, &ndev->flags); 3046a2968aaSIlan Elias __nci_request(ndev, nci_reset_req, 0, 3056a2968aaSIlan Elias msecs_to_jiffies(NCI_RESET_TIMEOUT)); 3066a2968aaSIlan Elias clear_bit(NCI_INIT, &ndev->flags); 3076a2968aaSIlan Elias 3086a2968aaSIlan Elias /* Flush cmd wq */ 3096a2968aaSIlan Elias flush_workqueue(ndev->cmd_wq); 3106a2968aaSIlan Elias 3116a2968aaSIlan Elias /* After this point our queues are empty 3126a2968aaSIlan Elias * and no works are scheduled. */ 3136a2968aaSIlan Elias ndev->ops->close(ndev); 3146a2968aaSIlan Elias 3156a2968aaSIlan Elias /* Clear flags */ 3166a2968aaSIlan Elias ndev->flags = 0; 3176a2968aaSIlan Elias 3186a2968aaSIlan Elias mutex_unlock(&ndev->req_lock); 3196a2968aaSIlan Elias 3206a2968aaSIlan Elias return 0; 3216a2968aaSIlan Elias } 3226a2968aaSIlan Elias 3236a2968aaSIlan Elias /* NCI command timer function */ 3246a2968aaSIlan Elias static void nci_cmd_timer(unsigned long arg) 3256a2968aaSIlan Elias { 3266a2968aaSIlan Elias struct nci_dev *ndev = (void *) arg; 3276a2968aaSIlan Elias 3286a2968aaSIlan Elias nfc_dbg("entry"); 3296a2968aaSIlan Elias 3306a2968aaSIlan Elias atomic_set(&ndev->cmd_cnt, 1); 3316a2968aaSIlan Elias queue_work(ndev->cmd_wq, &ndev->cmd_work); 3326a2968aaSIlan Elias } 3336a2968aaSIlan Elias 3346a2968aaSIlan Elias static int nci_dev_up(struct nfc_dev *nfc_dev) 3356a2968aaSIlan Elias { 3366a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 3376a2968aaSIlan Elias 3386a2968aaSIlan Elias nfc_dbg("entry"); 3396a2968aaSIlan Elias 3406a2968aaSIlan Elias return nci_open_device(ndev); 3416a2968aaSIlan Elias } 3426a2968aaSIlan Elias 3436a2968aaSIlan Elias static int nci_dev_down(struct nfc_dev *nfc_dev) 3446a2968aaSIlan Elias { 3456a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 3466a2968aaSIlan Elias 3476a2968aaSIlan Elias nfc_dbg("entry"); 3486a2968aaSIlan Elias 3496a2968aaSIlan Elias return nci_close_device(ndev); 3506a2968aaSIlan Elias } 3516a2968aaSIlan Elias 3526a2968aaSIlan Elias static int nci_start_poll(struct nfc_dev *nfc_dev, __u32 protocols) 3536a2968aaSIlan Elias { 3546a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 3556a2968aaSIlan Elias int rc; 3566a2968aaSIlan Elias 3576a2968aaSIlan Elias nfc_dbg("entry"); 3586a2968aaSIlan Elias 3596a2968aaSIlan Elias if (test_bit(NCI_DISCOVERY, &ndev->flags)) { 3606a2968aaSIlan Elias nfc_err("unable to start poll, since poll is already active"); 3616a2968aaSIlan Elias return -EBUSY; 3626a2968aaSIlan Elias } 3636a2968aaSIlan Elias 3646a2968aaSIlan Elias if (test_bit(NCI_POLL_ACTIVE, &ndev->flags)) { 3656a2968aaSIlan Elias nfc_dbg("target already active, first deactivate..."); 3666a2968aaSIlan Elias 3676a2968aaSIlan Elias rc = nci_request(ndev, nci_rf_deactivate_req, 0, 3686a2968aaSIlan Elias msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT)); 3696a2968aaSIlan Elias if (rc) 3706a2968aaSIlan Elias return -EBUSY; 3716a2968aaSIlan Elias } 3726a2968aaSIlan Elias 3736a2968aaSIlan Elias rc = nci_request(ndev, nci_rf_discover_req, protocols, 3746a2968aaSIlan Elias msecs_to_jiffies(NCI_RF_DISC_TIMEOUT)); 3756a2968aaSIlan Elias 3766a2968aaSIlan Elias if (!rc) 3776a2968aaSIlan Elias ndev->poll_prots = protocols; 3786a2968aaSIlan Elias 3796a2968aaSIlan Elias return rc; 3806a2968aaSIlan Elias } 3816a2968aaSIlan Elias 3826a2968aaSIlan Elias static void nci_stop_poll(struct nfc_dev *nfc_dev) 3836a2968aaSIlan Elias { 3846a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 3856a2968aaSIlan Elias 3866a2968aaSIlan Elias nfc_dbg("entry"); 3876a2968aaSIlan Elias 3886a2968aaSIlan Elias if (!test_bit(NCI_DISCOVERY, &ndev->flags)) { 3896a2968aaSIlan Elias nfc_err("unable to stop poll, since poll is not active"); 3906a2968aaSIlan Elias return; 3916a2968aaSIlan Elias } 3926a2968aaSIlan Elias 3936a2968aaSIlan Elias nci_request(ndev, nci_rf_deactivate_req, 0, 3946a2968aaSIlan Elias msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT)); 3956a2968aaSIlan Elias } 3966a2968aaSIlan Elias 3976a2968aaSIlan Elias static int nci_activate_target(struct nfc_dev *nfc_dev, __u32 target_idx, 3986a2968aaSIlan Elias __u32 protocol) 3996a2968aaSIlan Elias { 4006a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 4016a2968aaSIlan Elias 4026a2968aaSIlan Elias nfc_dbg("entry, target_idx %d, protocol 0x%x", target_idx, protocol); 4036a2968aaSIlan Elias 4046a2968aaSIlan Elias if (!test_bit(NCI_POLL_ACTIVE, &ndev->flags)) { 4056a2968aaSIlan Elias nfc_err("there is no available target to activate"); 4066a2968aaSIlan Elias return -EINVAL; 4076a2968aaSIlan Elias } 4086a2968aaSIlan Elias 4096a2968aaSIlan Elias if (ndev->target_active_prot) { 4106a2968aaSIlan Elias nfc_err("there is already an active target"); 4116a2968aaSIlan Elias return -EBUSY; 4126a2968aaSIlan Elias } 4136a2968aaSIlan Elias 4146a2968aaSIlan Elias if (!(ndev->target_available_prots & (1 << protocol))) { 4156a2968aaSIlan Elias nfc_err("target does not support the requested protocol 0x%x", 4166a2968aaSIlan Elias protocol); 4176a2968aaSIlan Elias return -EINVAL; 4186a2968aaSIlan Elias } 4196a2968aaSIlan Elias 4206a2968aaSIlan Elias ndev->target_active_prot = protocol; 4216a2968aaSIlan Elias ndev->target_available_prots = 0; 4226a2968aaSIlan Elias 4236a2968aaSIlan Elias return 0; 4246a2968aaSIlan Elias } 4256a2968aaSIlan Elias 4266a2968aaSIlan Elias static void nci_deactivate_target(struct nfc_dev *nfc_dev, __u32 target_idx) 4276a2968aaSIlan Elias { 4286a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 4296a2968aaSIlan Elias 4306a2968aaSIlan Elias nfc_dbg("entry, target_idx %d", target_idx); 4316a2968aaSIlan Elias 4326a2968aaSIlan Elias if (!ndev->target_active_prot) { 4336a2968aaSIlan Elias nfc_err("unable to deactivate target, no active target"); 4346a2968aaSIlan Elias return; 4356a2968aaSIlan Elias } 4366a2968aaSIlan Elias 4376a2968aaSIlan Elias ndev->target_active_prot = 0; 4386a2968aaSIlan Elias 4396a2968aaSIlan Elias if (test_bit(NCI_POLL_ACTIVE, &ndev->flags)) { 4406a2968aaSIlan Elias nci_request(ndev, nci_rf_deactivate_req, 0, 4416a2968aaSIlan Elias msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT)); 4426a2968aaSIlan Elias } 4436a2968aaSIlan Elias } 4446a2968aaSIlan Elias 4456a2968aaSIlan Elias static int nci_data_exchange(struct nfc_dev *nfc_dev, __u32 target_idx, 4466a2968aaSIlan Elias struct sk_buff *skb, 4476a2968aaSIlan Elias data_exchange_cb_t cb, 4486a2968aaSIlan Elias void *cb_context) 4496a2968aaSIlan Elias { 4506a2968aaSIlan Elias struct nci_dev *ndev = nfc_get_drvdata(nfc_dev); 4516a2968aaSIlan Elias 4526a2968aaSIlan Elias nfc_dbg("entry, target_idx %d, len %d", target_idx, skb->len); 4536a2968aaSIlan Elias 4546a2968aaSIlan Elias if (!ndev->target_active_prot) { 4556a2968aaSIlan Elias nfc_err("unable to exchange data, no active target"); 4566a2968aaSIlan Elias return -EINVAL; 4576a2968aaSIlan Elias } 4586a2968aaSIlan Elias 4596a2968aaSIlan Elias /* store cb and context to be used on receiving data */ 4606a2968aaSIlan Elias ndev->data_exchange_cb = cb; 4616a2968aaSIlan Elias ndev->data_exchange_cb_context = cb_context; 4626a2968aaSIlan Elias 4636a2968aaSIlan Elias return nci_send_data(ndev, ndev->conn_id, skb); 4646a2968aaSIlan Elias } 4656a2968aaSIlan Elias 4666a2968aaSIlan Elias static struct nfc_ops nci_nfc_ops = { 4676a2968aaSIlan Elias .dev_up = nci_dev_up, 4686a2968aaSIlan Elias .dev_down = nci_dev_down, 4696a2968aaSIlan Elias .start_poll = nci_start_poll, 4706a2968aaSIlan Elias .stop_poll = nci_stop_poll, 4716a2968aaSIlan Elias .activate_target = nci_activate_target, 4726a2968aaSIlan Elias .deactivate_target = nci_deactivate_target, 4736a2968aaSIlan Elias .data_exchange = nci_data_exchange, 4746a2968aaSIlan Elias }; 4756a2968aaSIlan Elias 4766a2968aaSIlan Elias /* ---- Interface to NCI drivers ---- */ 4776a2968aaSIlan Elias 4786a2968aaSIlan Elias /** 4796a2968aaSIlan Elias * nci_allocate_device - allocate a new nci device 4806a2968aaSIlan Elias * 4816a2968aaSIlan Elias * @ops: device operations 4826a2968aaSIlan Elias * @supported_protocols: NFC protocols supported by the device 4836a2968aaSIlan Elias */ 4846a2968aaSIlan Elias struct nci_dev *nci_allocate_device(struct nci_ops *ops, 4856a2968aaSIlan Elias __u32 supported_protocols, 4866a2968aaSIlan Elias int tx_headroom, 4876a2968aaSIlan Elias int tx_tailroom) 4886a2968aaSIlan Elias { 4896a2968aaSIlan Elias struct nci_dev *ndev = NULL; 4906a2968aaSIlan Elias 4916a2968aaSIlan Elias nfc_dbg("entry, supported_protocols 0x%x", supported_protocols); 4926a2968aaSIlan Elias 4936a2968aaSIlan Elias if (!ops->open || !ops->close || !ops->send) 4946a2968aaSIlan Elias goto exit; 4956a2968aaSIlan Elias 4966a2968aaSIlan Elias if (!supported_protocols) 4976a2968aaSIlan Elias goto exit; 4986a2968aaSIlan Elias 4996a2968aaSIlan Elias ndev = kzalloc(sizeof(struct nci_dev), GFP_KERNEL); 5006a2968aaSIlan Elias if (!ndev) 5016a2968aaSIlan Elias goto exit; 5026a2968aaSIlan Elias 5036a2968aaSIlan Elias ndev->ops = ops; 5046a2968aaSIlan Elias ndev->tx_headroom = tx_headroom; 5056a2968aaSIlan Elias ndev->tx_tailroom = tx_tailroom; 5066a2968aaSIlan Elias 5076a2968aaSIlan Elias ndev->nfc_dev = nfc_allocate_device(&nci_nfc_ops, 5086a2968aaSIlan Elias supported_protocols, 5096a2968aaSIlan Elias tx_headroom + NCI_DATA_HDR_SIZE, 5106a2968aaSIlan Elias tx_tailroom); 5116a2968aaSIlan Elias if (!ndev->nfc_dev) 5126a2968aaSIlan Elias goto free_exit; 5136a2968aaSIlan Elias 5146a2968aaSIlan Elias nfc_set_drvdata(ndev->nfc_dev, ndev); 5156a2968aaSIlan Elias 5166a2968aaSIlan Elias goto exit; 5176a2968aaSIlan Elias 5186a2968aaSIlan Elias free_exit: 5196a2968aaSIlan Elias kfree(ndev); 5206a2968aaSIlan Elias 5216a2968aaSIlan Elias exit: 5226a2968aaSIlan Elias return ndev; 5236a2968aaSIlan Elias } 5246a2968aaSIlan Elias EXPORT_SYMBOL(nci_allocate_device); 5256a2968aaSIlan Elias 5266a2968aaSIlan Elias /** 5276a2968aaSIlan Elias * nci_free_device - deallocate nci device 5286a2968aaSIlan Elias * 5296a2968aaSIlan Elias * @ndev: The nci device to deallocate 5306a2968aaSIlan Elias */ 5316a2968aaSIlan Elias void nci_free_device(struct nci_dev *ndev) 5326a2968aaSIlan Elias { 5336a2968aaSIlan Elias nfc_dbg("entry"); 5346a2968aaSIlan Elias 5356a2968aaSIlan Elias nfc_free_device(ndev->nfc_dev); 5366a2968aaSIlan Elias kfree(ndev); 5376a2968aaSIlan Elias } 5386a2968aaSIlan Elias EXPORT_SYMBOL(nci_free_device); 5396a2968aaSIlan Elias 5406a2968aaSIlan Elias /** 5416a2968aaSIlan Elias * nci_register_device - register a nci device in the nfc subsystem 5426a2968aaSIlan Elias * 5436a2968aaSIlan Elias * @dev: The nci device to register 5446a2968aaSIlan Elias */ 5456a2968aaSIlan Elias int nci_register_device(struct nci_dev *ndev) 5466a2968aaSIlan Elias { 5476a2968aaSIlan Elias int rc; 5486a2968aaSIlan Elias struct device *dev = &ndev->nfc_dev->dev; 5496a2968aaSIlan Elias char name[32]; 5506a2968aaSIlan Elias 5516a2968aaSIlan Elias nfc_dbg("entry"); 5526a2968aaSIlan Elias 5536a2968aaSIlan Elias rc = nfc_register_device(ndev->nfc_dev); 5546a2968aaSIlan Elias if (rc) 5556a2968aaSIlan Elias goto exit; 5566a2968aaSIlan Elias 5576a2968aaSIlan Elias ndev->flags = 0; 5586a2968aaSIlan Elias 5596a2968aaSIlan Elias INIT_WORK(&ndev->cmd_work, nci_cmd_work); 5606a2968aaSIlan Elias snprintf(name, sizeof(name), "%s_nci_cmd_wq", dev_name(dev)); 5616a2968aaSIlan Elias ndev->cmd_wq = create_singlethread_workqueue(name); 5626a2968aaSIlan Elias if (!ndev->cmd_wq) { 5636a2968aaSIlan Elias rc = -ENOMEM; 5646a2968aaSIlan Elias goto unreg_exit; 5656a2968aaSIlan Elias } 5666a2968aaSIlan Elias 5676a2968aaSIlan Elias INIT_WORK(&ndev->rx_work, nci_rx_work); 5686a2968aaSIlan Elias snprintf(name, sizeof(name), "%s_nci_rx_wq", dev_name(dev)); 5696a2968aaSIlan Elias ndev->rx_wq = create_singlethread_workqueue(name); 5706a2968aaSIlan Elias if (!ndev->rx_wq) { 5716a2968aaSIlan Elias rc = -ENOMEM; 5726a2968aaSIlan Elias goto destroy_cmd_wq_exit; 5736a2968aaSIlan Elias } 5746a2968aaSIlan Elias 5756a2968aaSIlan Elias INIT_WORK(&ndev->tx_work, nci_tx_work); 5766a2968aaSIlan Elias snprintf(name, sizeof(name), "%s_nci_tx_wq", dev_name(dev)); 5776a2968aaSIlan Elias ndev->tx_wq = create_singlethread_workqueue(name); 5786a2968aaSIlan Elias if (!ndev->tx_wq) { 5796a2968aaSIlan Elias rc = -ENOMEM; 5806a2968aaSIlan Elias goto destroy_rx_wq_exit; 5816a2968aaSIlan Elias } 5826a2968aaSIlan Elias 5836a2968aaSIlan Elias skb_queue_head_init(&ndev->cmd_q); 5846a2968aaSIlan Elias skb_queue_head_init(&ndev->rx_q); 5856a2968aaSIlan Elias skb_queue_head_init(&ndev->tx_q); 5866a2968aaSIlan Elias 5876a2968aaSIlan Elias setup_timer(&ndev->cmd_timer, nci_cmd_timer, 5886a2968aaSIlan Elias (unsigned long) ndev); 5896a2968aaSIlan Elias 5906a2968aaSIlan Elias mutex_init(&ndev->req_lock); 5916a2968aaSIlan Elias 5926a2968aaSIlan Elias goto exit; 5936a2968aaSIlan Elias 5946a2968aaSIlan Elias destroy_rx_wq_exit: 5956a2968aaSIlan Elias destroy_workqueue(ndev->rx_wq); 5966a2968aaSIlan Elias 5976a2968aaSIlan Elias destroy_cmd_wq_exit: 5986a2968aaSIlan Elias destroy_workqueue(ndev->cmd_wq); 5996a2968aaSIlan Elias 6006a2968aaSIlan Elias unreg_exit: 6016a2968aaSIlan Elias nfc_unregister_device(ndev->nfc_dev); 6026a2968aaSIlan Elias 6036a2968aaSIlan Elias exit: 6046a2968aaSIlan Elias return rc; 6056a2968aaSIlan Elias } 6066a2968aaSIlan Elias EXPORT_SYMBOL(nci_register_device); 6076a2968aaSIlan Elias 6086a2968aaSIlan Elias /** 6096a2968aaSIlan Elias * nci_unregister_device - unregister a nci device in the nfc subsystem 6106a2968aaSIlan Elias * 6116a2968aaSIlan Elias * @dev: The nci device to unregister 6126a2968aaSIlan Elias */ 6136a2968aaSIlan Elias void nci_unregister_device(struct nci_dev *ndev) 6146a2968aaSIlan Elias { 6156a2968aaSIlan Elias nfc_dbg("entry"); 6166a2968aaSIlan Elias 6176a2968aaSIlan Elias nci_close_device(ndev); 6186a2968aaSIlan Elias 6196a2968aaSIlan Elias destroy_workqueue(ndev->cmd_wq); 6206a2968aaSIlan Elias destroy_workqueue(ndev->rx_wq); 6216a2968aaSIlan Elias destroy_workqueue(ndev->tx_wq); 6226a2968aaSIlan Elias 6236a2968aaSIlan Elias nfc_unregister_device(ndev->nfc_dev); 6246a2968aaSIlan Elias } 6256a2968aaSIlan Elias EXPORT_SYMBOL(nci_unregister_device); 6266a2968aaSIlan Elias 6276a2968aaSIlan Elias /** 6286a2968aaSIlan Elias * nci_recv_frame - receive frame from NCI drivers 6296a2968aaSIlan Elias * 6306a2968aaSIlan Elias * @skb: The sk_buff to receive 6316a2968aaSIlan Elias */ 6326a2968aaSIlan Elias int nci_recv_frame(struct sk_buff *skb) 6336a2968aaSIlan Elias { 6346a2968aaSIlan Elias struct nci_dev *ndev = (struct nci_dev *) skb->dev; 6356a2968aaSIlan Elias 6366a2968aaSIlan Elias nfc_dbg("entry, len %d", skb->len); 6376a2968aaSIlan Elias 6386a2968aaSIlan Elias if (!ndev || (!test_bit(NCI_UP, &ndev->flags) 6396a2968aaSIlan Elias && !test_bit(NCI_INIT, &ndev->flags))) { 6406a2968aaSIlan Elias kfree_skb(skb); 6416a2968aaSIlan Elias return -ENXIO; 6426a2968aaSIlan Elias } 6436a2968aaSIlan Elias 6446a2968aaSIlan Elias /* Queue frame for rx worker thread */ 6456a2968aaSIlan Elias skb_queue_tail(&ndev->rx_q, skb); 6466a2968aaSIlan Elias queue_work(ndev->rx_wq, &ndev->rx_work); 6476a2968aaSIlan Elias 6486a2968aaSIlan Elias return 0; 6496a2968aaSIlan Elias } 6506a2968aaSIlan Elias EXPORT_SYMBOL(nci_recv_frame); 6516a2968aaSIlan Elias 6526a2968aaSIlan Elias static int nci_send_frame(struct sk_buff *skb) 6536a2968aaSIlan Elias { 6546a2968aaSIlan Elias struct nci_dev *ndev = (struct nci_dev *) skb->dev; 6556a2968aaSIlan Elias 6566a2968aaSIlan Elias nfc_dbg("entry, len %d", skb->len); 6576a2968aaSIlan Elias 6586a2968aaSIlan Elias if (!ndev) { 6596a2968aaSIlan Elias kfree_skb(skb); 6606a2968aaSIlan Elias return -ENODEV; 6616a2968aaSIlan Elias } 6626a2968aaSIlan Elias 6636a2968aaSIlan Elias /* Get rid of skb owner, prior to sending to the driver. */ 6646a2968aaSIlan Elias skb_orphan(skb); 6656a2968aaSIlan Elias 6666a2968aaSIlan Elias return ndev->ops->send(skb); 6676a2968aaSIlan Elias } 6686a2968aaSIlan Elias 6696a2968aaSIlan Elias /* Send NCI command */ 6706a2968aaSIlan Elias int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload) 6716a2968aaSIlan Elias { 6726a2968aaSIlan Elias struct nci_ctrl_hdr *hdr; 6736a2968aaSIlan Elias struct sk_buff *skb; 6746a2968aaSIlan Elias 6756a2968aaSIlan Elias nfc_dbg("entry, opcode 0x%x, plen %d", opcode, plen); 6766a2968aaSIlan Elias 6776a2968aaSIlan Elias skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + plen), GFP_KERNEL); 6786a2968aaSIlan Elias if (!skb) { 6796a2968aaSIlan Elias nfc_err("no memory for command"); 6806a2968aaSIlan Elias return -ENOMEM; 6816a2968aaSIlan Elias } 6826a2968aaSIlan Elias 6836a2968aaSIlan Elias hdr = (struct nci_ctrl_hdr *) skb_put(skb, NCI_CTRL_HDR_SIZE); 6846a2968aaSIlan Elias hdr->gid = nci_opcode_gid(opcode); 6856a2968aaSIlan Elias hdr->oid = nci_opcode_oid(opcode); 6866a2968aaSIlan Elias hdr->plen = plen; 6876a2968aaSIlan Elias 6886a2968aaSIlan Elias nci_mt_set((__u8 *)hdr, NCI_MT_CMD_PKT); 6896a2968aaSIlan Elias nci_pbf_set((__u8 *)hdr, NCI_PBF_LAST); 6906a2968aaSIlan Elias 6916a2968aaSIlan Elias if (plen) 6926a2968aaSIlan Elias memcpy(skb_put(skb, plen), payload, plen); 6936a2968aaSIlan Elias 6946a2968aaSIlan Elias skb->dev = (void *) ndev; 6956a2968aaSIlan Elias 6966a2968aaSIlan Elias skb_queue_tail(&ndev->cmd_q, skb); 6976a2968aaSIlan Elias queue_work(ndev->cmd_wq, &ndev->cmd_work); 6986a2968aaSIlan Elias 6996a2968aaSIlan Elias return 0; 7006a2968aaSIlan Elias } 7016a2968aaSIlan Elias 7026a2968aaSIlan Elias /* ---- NCI TX Data worker thread ---- */ 7036a2968aaSIlan Elias 7046a2968aaSIlan Elias static void nci_tx_work(struct work_struct *work) 7056a2968aaSIlan Elias { 7066a2968aaSIlan Elias struct nci_dev *ndev = container_of(work, struct nci_dev, tx_work); 7076a2968aaSIlan Elias struct sk_buff *skb; 7086a2968aaSIlan Elias 7096a2968aaSIlan Elias nfc_dbg("entry, credits_cnt %d", atomic_read(&ndev->credits_cnt)); 7106a2968aaSIlan Elias 7116a2968aaSIlan Elias /* Send queued tx data */ 7126a2968aaSIlan Elias while (atomic_read(&ndev->credits_cnt)) { 7136a2968aaSIlan Elias skb = skb_dequeue(&ndev->tx_q); 7146a2968aaSIlan Elias if (!skb) 7156a2968aaSIlan Elias return; 7166a2968aaSIlan Elias 7176a2968aaSIlan Elias atomic_dec(&ndev->credits_cnt); 7186a2968aaSIlan Elias 7196a2968aaSIlan Elias nfc_dbg("NCI TX: MT=data, PBF=%d, conn_id=%d, plen=%d", 7206a2968aaSIlan Elias nci_pbf(skb->data), 7216a2968aaSIlan Elias nci_conn_id(skb->data), 7226a2968aaSIlan Elias nci_plen(skb->data)); 7236a2968aaSIlan Elias 7246a2968aaSIlan Elias nci_send_frame(skb); 7256a2968aaSIlan Elias } 7266a2968aaSIlan Elias } 7276a2968aaSIlan Elias 7286a2968aaSIlan Elias /* ----- NCI RX worker thread (data & control) ----- */ 7296a2968aaSIlan Elias 7306a2968aaSIlan Elias static void nci_rx_work(struct work_struct *work) 7316a2968aaSIlan Elias { 7326a2968aaSIlan Elias struct nci_dev *ndev = container_of(work, struct nci_dev, rx_work); 7336a2968aaSIlan Elias struct sk_buff *skb; 7346a2968aaSIlan Elias 7356a2968aaSIlan Elias while ((skb = skb_dequeue(&ndev->rx_q))) { 7366a2968aaSIlan Elias /* Process frame */ 7376a2968aaSIlan Elias switch (nci_mt(skb->data)) { 7386a2968aaSIlan Elias case NCI_MT_RSP_PKT: 7396a2968aaSIlan Elias nci_rsp_packet(ndev, skb); 7406a2968aaSIlan Elias break; 7416a2968aaSIlan Elias 7426a2968aaSIlan Elias case NCI_MT_NTF_PKT: 7436a2968aaSIlan Elias nci_ntf_packet(ndev, skb); 7446a2968aaSIlan Elias break; 7456a2968aaSIlan Elias 7466a2968aaSIlan Elias case NCI_MT_DATA_PKT: 7476a2968aaSIlan Elias nci_rx_data_packet(ndev, skb); 7486a2968aaSIlan Elias break; 7496a2968aaSIlan Elias 7506a2968aaSIlan Elias default: 7516a2968aaSIlan Elias nfc_err("unknown MT 0x%x", nci_mt(skb->data)); 7526a2968aaSIlan Elias kfree_skb(skb); 7536a2968aaSIlan Elias break; 7546a2968aaSIlan Elias } 7556a2968aaSIlan Elias } 7566a2968aaSIlan Elias } 7576a2968aaSIlan Elias 7586a2968aaSIlan Elias /* ----- NCI TX CMD worker thread ----- */ 7596a2968aaSIlan Elias 7606a2968aaSIlan Elias static void nci_cmd_work(struct work_struct *work) 7616a2968aaSIlan Elias { 7626a2968aaSIlan Elias struct nci_dev *ndev = container_of(work, struct nci_dev, cmd_work); 7636a2968aaSIlan Elias struct sk_buff *skb; 7646a2968aaSIlan Elias 7656a2968aaSIlan Elias nfc_dbg("entry, cmd_cnt %d", atomic_read(&ndev->cmd_cnt)); 7666a2968aaSIlan Elias 7676a2968aaSIlan Elias /* Send queued command */ 7686a2968aaSIlan Elias if (atomic_read(&ndev->cmd_cnt)) { 7696a2968aaSIlan Elias skb = skb_dequeue(&ndev->cmd_q); 7706a2968aaSIlan Elias if (!skb) 7716a2968aaSIlan Elias return; 7726a2968aaSIlan Elias 7736a2968aaSIlan Elias atomic_dec(&ndev->cmd_cnt); 7746a2968aaSIlan Elias 7756a2968aaSIlan Elias nfc_dbg("NCI TX: MT=cmd, PBF=%d, GID=0x%x, OID=0x%x, plen=%d", 7766a2968aaSIlan Elias nci_pbf(skb->data), 7776a2968aaSIlan Elias nci_opcode_gid(nci_opcode(skb->data)), 7786a2968aaSIlan Elias nci_opcode_oid(nci_opcode(skb->data)), 7796a2968aaSIlan Elias nci_plen(skb->data)); 7806a2968aaSIlan Elias 7816a2968aaSIlan Elias nci_send_frame(skb); 7826a2968aaSIlan Elias 7836a2968aaSIlan Elias mod_timer(&ndev->cmd_timer, 7846a2968aaSIlan Elias jiffies + msecs_to_jiffies(NCI_CMD_TIMEOUT)); 7856a2968aaSIlan Elias } 7866a2968aaSIlan Elias } 787