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9b3f66bc0e
Do not include unnecessary headers. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
985 lines
24 KiB
C
985 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* HCI based Driver for NXP PN544 NFC Chip
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*
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* Copyright (C) 2012 Intel Corporation. All rights reserved.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/nfc.h>
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#include <net/nfc/hci.h>
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#include "pn544.h"
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/* Timing restrictions (ms) */
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#define PN544_HCI_RESETVEN_TIME 30
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enum pn544_state {
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PN544_ST_COLD,
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PN544_ST_FW_READY,
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PN544_ST_READY,
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};
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#define FULL_VERSION_LEN 11
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/* Proprietary commands */
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#define PN544_WRITE 0x3f
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#define PN544_TEST_SWP 0x21
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/* Proprietary gates, events, commands and registers */
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/* NFC_HCI_RF_READER_A_GATE additional registers and commands */
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#define PN544_RF_READER_A_AUTO_ACTIVATION 0x10
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#define PN544_RF_READER_A_CMD_CONTINUE_ACTIVATION 0x12
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#define PN544_MIFARE_CMD 0x21
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/* Commands that apply to all RF readers */
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#define PN544_RF_READER_CMD_PRESENCE_CHECK 0x30
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#define PN544_RF_READER_CMD_ACTIVATE_NEXT 0x32
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/* NFC_HCI_ID_MGMT_GATE additional registers */
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#define PN544_ID_MGMT_FULL_VERSION_SW 0x10
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#define PN544_RF_READER_ISO15693_GATE 0x12
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#define PN544_RF_READER_F_GATE 0x14
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#define PN544_FELICA_ID 0x04
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#define PN544_FELICA_RAW 0x20
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#define PN544_RF_READER_JEWEL_GATE 0x15
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#define PN544_JEWEL_RAW_CMD 0x23
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#define PN544_RF_READER_NFCIP1_INITIATOR_GATE 0x30
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#define PN544_RF_READER_NFCIP1_TARGET_GATE 0x31
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#define PN544_SYS_MGMT_GATE 0x90
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#define PN544_SYS_MGMT_INFO_NOTIFICATION 0x02
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#define PN544_POLLING_LOOP_MGMT_GATE 0x94
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#define PN544_DEP_MODE 0x01
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#define PN544_DEP_ATR_REQ 0x02
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#define PN544_DEP_ATR_RES 0x03
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#define PN544_DEP_MERGE 0x0D
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#define PN544_PL_RDPHASES 0x06
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#define PN544_PL_EMULATION 0x07
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#define PN544_PL_NFCT_DEACTIVATED 0x09
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#define PN544_SWP_MGMT_GATE 0xA0
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#define PN544_SWP_DEFAULT_MODE 0x01
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#define PN544_NFC_WI_MGMT_GATE 0xA1
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#define PN544_NFC_ESE_DEFAULT_MODE 0x01
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#define PN544_HCI_EVT_SND_DATA 0x01
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#define PN544_HCI_EVT_ACTIVATED 0x02
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#define PN544_HCI_EVT_DEACTIVATED 0x03
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#define PN544_HCI_EVT_RCV_DATA 0x04
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#define PN544_HCI_EVT_CONTINUE_MI 0x05
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#define PN544_HCI_EVT_SWITCH_MODE 0x03
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#define PN544_HCI_CMD_ATTREQUEST 0x12
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#define PN544_HCI_CMD_CONTINUE_ACTIVATION 0x13
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static const struct nfc_hci_gate pn544_gates[] = {
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{NFC_HCI_ADMIN_GATE, NFC_HCI_INVALID_PIPE},
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{NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
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{NFC_HCI_ID_MGMT_GATE, NFC_HCI_INVALID_PIPE},
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{NFC_HCI_LINK_MGMT_GATE, NFC_HCI_INVALID_PIPE},
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{NFC_HCI_RF_READER_B_GATE, NFC_HCI_INVALID_PIPE},
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{NFC_HCI_RF_READER_A_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_SYS_MGMT_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_SWP_MGMT_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_POLLING_LOOP_MGMT_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_NFC_WI_MGMT_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_RF_READER_F_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_RF_READER_JEWEL_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_RF_READER_ISO15693_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_RF_READER_NFCIP1_INITIATOR_GATE, NFC_HCI_INVALID_PIPE},
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{PN544_RF_READER_NFCIP1_TARGET_GATE, NFC_HCI_INVALID_PIPE}
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};
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/* Largest headroom needed for outgoing custom commands */
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#define PN544_CMDS_HEADROOM 2
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struct pn544_hci_info {
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const struct nfc_phy_ops *phy_ops;
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void *phy_id;
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struct nfc_hci_dev *hdev;
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enum pn544_state state;
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struct mutex info_lock;
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int async_cb_type;
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data_exchange_cb_t async_cb;
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void *async_cb_context;
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fw_download_t fw_download;
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};
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static int pn544_hci_open(struct nfc_hci_dev *hdev)
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{
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struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
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int r = 0;
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mutex_lock(&info->info_lock);
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if (info->state != PN544_ST_COLD) {
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r = -EBUSY;
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goto out;
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}
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r = info->phy_ops->enable(info->phy_id);
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if (r == 0)
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info->state = PN544_ST_READY;
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out:
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mutex_unlock(&info->info_lock);
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return r;
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}
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static void pn544_hci_close(struct nfc_hci_dev *hdev)
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{
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struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
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mutex_lock(&info->info_lock);
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if (info->state == PN544_ST_COLD)
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goto out;
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info->phy_ops->disable(info->phy_id);
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info->state = PN544_ST_COLD;
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out:
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mutex_unlock(&info->info_lock);
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}
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static int pn544_hci_ready(struct nfc_hci_dev *hdev)
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{
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struct sk_buff *skb;
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static struct hw_config {
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u8 adr[2];
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u8 value;
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} hw_config[] = {
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{{0x9f, 0x9a}, 0x00},
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{{0x98, 0x10}, 0xbc},
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{{0x9e, 0x71}, 0x00},
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{{0x98, 0x09}, 0x00},
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{{0x9e, 0xb4}, 0x00},
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{{0x9c, 0x01}, 0x08},
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{{0x9e, 0xaa}, 0x01},
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{{0x9b, 0xd1}, 0x17},
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{{0x9b, 0xd2}, 0x58},
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{{0x9b, 0xd3}, 0x10},
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{{0x9b, 0xd4}, 0x47},
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{{0x9b, 0xd5}, 0x0c},
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{{0x9b, 0xd6}, 0x37},
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{{0x9b, 0xdd}, 0x33},
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{{0x9b, 0x84}, 0x00},
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{{0x99, 0x81}, 0x79},
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{{0x99, 0x31}, 0x79},
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{{0x98, 0x00}, 0x3f},
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{{0x9f, 0x09}, 0x02},
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{{0x9f, 0x0a}, 0x05},
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{{0x9e, 0xd1}, 0xa1},
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{{0x99, 0x23}, 0x01},
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{{0x9e, 0x74}, 0x00},
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{{0x9e, 0x90}, 0x00},
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{{0x9f, 0x28}, 0x10},
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{{0x9f, 0x35}, 0x04},
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{{0x9f, 0x36}, 0x11},
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{{0x9c, 0x31}, 0x00},
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{{0x9c, 0x32}, 0x00},
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{{0x9c, 0x19}, 0x0a},
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{{0x9c, 0x1a}, 0x0a},
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{{0x9c, 0x0c}, 0x00},
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{{0x9c, 0x0d}, 0x00},
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{{0x9c, 0x12}, 0x00},
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{{0x9c, 0x13}, 0x00},
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{{0x98, 0xa2}, 0x09},
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{{0x98, 0x93}, 0x00},
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{{0x98, 0x7d}, 0x08},
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{{0x98, 0x7e}, 0x00},
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{{0x9f, 0xc8}, 0x00},
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};
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struct hw_config *p = hw_config;
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int count = ARRAY_SIZE(hw_config);
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struct sk_buff *res_skb;
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u8 param[4];
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int r;
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param[0] = 0;
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while (count--) {
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param[1] = p->adr[0];
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param[2] = p->adr[1];
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param[3] = p->value;
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r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE, PN544_WRITE,
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param, 4, &res_skb);
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if (r < 0)
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return r;
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if (res_skb->len != 1) {
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kfree_skb(res_skb);
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return -EPROTO;
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}
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if (res_skb->data[0] != p->value) {
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kfree_skb(res_skb);
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return -EIO;
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}
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kfree_skb(res_skb);
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p++;
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}
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param[0] = NFC_HCI_UICC_HOST_ID;
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r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
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NFC_HCI_ADMIN_WHITELIST, param, 1);
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if (r < 0)
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return r;
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param[0] = 0x3d;
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r = nfc_hci_set_param(hdev, PN544_SYS_MGMT_GATE,
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PN544_SYS_MGMT_INFO_NOTIFICATION, param, 1);
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if (r < 0)
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return r;
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param[0] = 0x0;
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r = nfc_hci_set_param(hdev, NFC_HCI_RF_READER_A_GATE,
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PN544_RF_READER_A_AUTO_ACTIVATION, param, 1);
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if (r < 0)
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return r;
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r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
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NFC_HCI_EVT_END_OPERATION, NULL, 0);
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if (r < 0)
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return r;
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param[0] = 0x1;
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r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
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PN544_PL_NFCT_DEACTIVATED, param, 1);
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if (r < 0)
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return r;
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param[0] = 0x0;
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r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
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PN544_PL_RDPHASES, param, 1);
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if (r < 0)
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return r;
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r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
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PN544_ID_MGMT_FULL_VERSION_SW, &skb);
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if (r < 0)
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return r;
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if (skb->len != FULL_VERSION_LEN) {
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kfree_skb(skb);
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return -EINVAL;
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}
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print_hex_dump(KERN_DEBUG, "FULL VERSION SOFTWARE INFO: ",
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DUMP_PREFIX_NONE, 16, 1,
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skb->data, FULL_VERSION_LEN, false);
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kfree_skb(skb);
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return 0;
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}
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static int pn544_hci_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
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{
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struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
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return info->phy_ops->write(info->phy_id, skb);
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}
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static int pn544_hci_start_poll(struct nfc_hci_dev *hdev,
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u32 im_protocols, u32 tm_protocols)
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{
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u8 phases = 0;
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int r;
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u8 duration[2];
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u8 activated;
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u8 i_mode = 0x3f; /* Enable all supported modes */
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u8 t_mode = 0x0f;
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u8 t_merge = 0x01; /* Enable merge by default */
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pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
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__func__, im_protocols, tm_protocols);
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r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
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NFC_HCI_EVT_END_OPERATION, NULL, 0);
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if (r < 0)
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return r;
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duration[0] = 0x18;
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duration[1] = 0x6a;
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r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
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PN544_PL_EMULATION, duration, 2);
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if (r < 0)
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return r;
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activated = 0;
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r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
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PN544_PL_NFCT_DEACTIVATED, &activated, 1);
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if (r < 0)
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return r;
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if (im_protocols & (NFC_PROTO_ISO14443_MASK | NFC_PROTO_MIFARE_MASK |
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NFC_PROTO_JEWEL_MASK))
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phases |= 1; /* Type A */
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if (im_protocols & NFC_PROTO_FELICA_MASK) {
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phases |= (1 << 2); /* Type F 212 */
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phases |= (1 << 3); /* Type F 424 */
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}
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phases |= (1 << 5); /* NFC active */
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r = nfc_hci_set_param(hdev, PN544_POLLING_LOOP_MGMT_GATE,
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PN544_PL_RDPHASES, &phases, 1);
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if (r < 0)
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return r;
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if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {
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hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
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&hdev->gb_len);
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pr_debug("generate local bytes %p\n", hdev->gb);
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if (hdev->gb == NULL || hdev->gb_len == 0) {
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im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
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tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
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}
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}
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if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
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r = nfc_hci_send_event(hdev,
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PN544_RF_READER_NFCIP1_INITIATOR_GATE,
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NFC_HCI_EVT_END_OPERATION, NULL, 0);
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if (r < 0)
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return r;
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r = nfc_hci_set_param(hdev,
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PN544_RF_READER_NFCIP1_INITIATOR_GATE,
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PN544_DEP_MODE, &i_mode, 1);
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if (r < 0)
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return r;
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r = nfc_hci_set_param(hdev,
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PN544_RF_READER_NFCIP1_INITIATOR_GATE,
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PN544_DEP_ATR_REQ, hdev->gb, hdev->gb_len);
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if (r < 0)
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return r;
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r = nfc_hci_send_event(hdev,
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PN544_RF_READER_NFCIP1_INITIATOR_GATE,
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NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
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if (r < 0)
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nfc_hci_send_event(hdev,
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PN544_RF_READER_NFCIP1_INITIATOR_GATE,
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NFC_HCI_EVT_END_OPERATION, NULL, 0);
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}
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if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
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r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
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PN544_DEP_MODE, &t_mode, 1);
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if (r < 0)
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return r;
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r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
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PN544_DEP_ATR_RES, hdev->gb, hdev->gb_len);
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if (r < 0)
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return r;
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r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
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PN544_DEP_MERGE, &t_merge, 1);
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if (r < 0)
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return r;
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}
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r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
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NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
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if (r < 0)
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nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
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NFC_HCI_EVT_END_OPERATION, NULL, 0);
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return r;
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}
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static int pn544_hci_dep_link_up(struct nfc_hci_dev *hdev,
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struct nfc_target *target, u8 comm_mode,
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u8 *gb, size_t gb_len)
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{
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struct sk_buff *rgb_skb = NULL;
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int r;
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r = nfc_hci_get_param(hdev, target->hci_reader_gate,
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PN544_DEP_ATR_RES, &rgb_skb);
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if (r < 0)
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return r;
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if (rgb_skb->len == 0 || rgb_skb->len > NFC_GB_MAXSIZE) {
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r = -EPROTO;
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goto exit;
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}
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print_hex_dump(KERN_DEBUG, "remote gb: ", DUMP_PREFIX_OFFSET,
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16, 1, rgb_skb->data, rgb_skb->len, true);
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r = nfc_set_remote_general_bytes(hdev->ndev, rgb_skb->data,
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rgb_skb->len);
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if (r == 0)
|
|
r = nfc_dep_link_is_up(hdev->ndev, target->idx, comm_mode,
|
|
NFC_RF_INITIATOR);
|
|
exit:
|
|
kfree_skb(rgb_skb);
|
|
return r;
|
|
}
|
|
|
|
static int pn544_hci_dep_link_down(struct nfc_hci_dev *hdev)
|
|
{
|
|
|
|
return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_INITIATOR_GATE,
|
|
NFC_HCI_EVT_END_OPERATION, NULL, 0);
|
|
}
|
|
|
|
static int pn544_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
|
|
struct nfc_target *target)
|
|
{
|
|
switch (gate) {
|
|
case PN544_RF_READER_F_GATE:
|
|
target->supported_protocols = NFC_PROTO_FELICA_MASK;
|
|
break;
|
|
case PN544_RF_READER_JEWEL_GATE:
|
|
target->supported_protocols = NFC_PROTO_JEWEL_MASK;
|
|
target->sens_res = 0x0c00;
|
|
break;
|
|
case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
|
|
target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
|
|
break;
|
|
default:
|
|
return -EPROTO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pn544_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
|
|
u8 gate,
|
|
struct nfc_target *target)
|
|
{
|
|
struct sk_buff *uid_skb;
|
|
int r = 0;
|
|
|
|
if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE)
|
|
return r;
|
|
|
|
if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
|
|
r = nfc_hci_send_cmd(hdev,
|
|
PN544_RF_READER_NFCIP1_INITIATOR_GATE,
|
|
PN544_HCI_CMD_CONTINUE_ACTIVATION, NULL, 0, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
target->hci_reader_gate = PN544_RF_READER_NFCIP1_INITIATOR_GATE;
|
|
} else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
|
|
if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
|
|
target->nfcid1_len != 10)
|
|
return -EPROTO;
|
|
|
|
r = nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
|
|
PN544_RF_READER_CMD_ACTIVATE_NEXT,
|
|
target->nfcid1, target->nfcid1_len, NULL);
|
|
} else if (target->supported_protocols & NFC_PROTO_FELICA_MASK) {
|
|
r = nfc_hci_get_param(hdev, PN544_RF_READER_F_GATE,
|
|
PN544_FELICA_ID, &uid_skb);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (uid_skb->len != 8) {
|
|
kfree_skb(uid_skb);
|
|
return -EPROTO;
|
|
}
|
|
|
|
/* Type F NFC-DEP IDm has prefix 0x01FE */
|
|
if ((uid_skb->data[0] == 0x01) && (uid_skb->data[1] == 0xfe)) {
|
|
kfree_skb(uid_skb);
|
|
r = nfc_hci_send_cmd(hdev,
|
|
PN544_RF_READER_NFCIP1_INITIATOR_GATE,
|
|
PN544_HCI_CMD_CONTINUE_ACTIVATION,
|
|
NULL, 0, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
|
|
target->hci_reader_gate =
|
|
PN544_RF_READER_NFCIP1_INITIATOR_GATE;
|
|
} else {
|
|
r = nfc_hci_send_cmd(hdev, PN544_RF_READER_F_GATE,
|
|
PN544_RF_READER_CMD_ACTIVATE_NEXT,
|
|
uid_skb->data, uid_skb->len, NULL);
|
|
kfree_skb(uid_skb);
|
|
}
|
|
} else if (target->supported_protocols & NFC_PROTO_ISO14443_MASK) {
|
|
/*
|
|
* TODO: maybe other ISO 14443 require some kind of continue
|
|
* activation, but for now we've seen only this one below.
|
|
*/
|
|
if (target->sens_res == 0x4403) /* Type 4 Mifare DESFire */
|
|
r = nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
|
|
PN544_RF_READER_A_CMD_CONTINUE_ACTIVATION,
|
|
NULL, 0, NULL);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
#define PN544_CB_TYPE_READER_F 1
|
|
|
|
static void pn544_hci_data_exchange_cb(void *context, struct sk_buff *skb,
|
|
int err)
|
|
{
|
|
struct pn544_hci_info *info = context;
|
|
|
|
switch (info->async_cb_type) {
|
|
case PN544_CB_TYPE_READER_F:
|
|
if (err == 0)
|
|
skb_pull(skb, 1);
|
|
info->async_cb(info->async_cb_context, skb, err);
|
|
break;
|
|
default:
|
|
if (err == 0)
|
|
kfree_skb(skb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define MIFARE_CMD_AUTH_KEY_A 0x60
|
|
#define MIFARE_CMD_AUTH_KEY_B 0x61
|
|
#define MIFARE_CMD_HEADER 2
|
|
#define MIFARE_UID_LEN 4
|
|
#define MIFARE_KEY_LEN 6
|
|
#define MIFARE_CMD_LEN 12
|
|
/*
|
|
* Returns:
|
|
* <= 0: driver handled the data exchange
|
|
* 1: driver doesn't especially handle, please do standard processing
|
|
*/
|
|
static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev,
|
|
struct nfc_target *target,
|
|
struct sk_buff *skb, data_exchange_cb_t cb,
|
|
void *cb_context)
|
|
{
|
|
struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
|
|
pr_info(DRIVER_DESC ": %s for gate=%d\n", __func__,
|
|
target->hci_reader_gate);
|
|
|
|
switch (target->hci_reader_gate) {
|
|
case NFC_HCI_RF_READER_A_GATE:
|
|
if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
|
|
/*
|
|
* It seems that pn544 is inverting key and UID for
|
|
* MIFARE authentication commands.
|
|
*/
|
|
if (skb->len == MIFARE_CMD_LEN &&
|
|
(skb->data[0] == MIFARE_CMD_AUTH_KEY_A ||
|
|
skb->data[0] == MIFARE_CMD_AUTH_KEY_B)) {
|
|
u8 uid[MIFARE_UID_LEN];
|
|
u8 *data = skb->data + MIFARE_CMD_HEADER;
|
|
|
|
memcpy(uid, data + MIFARE_KEY_LEN,
|
|
MIFARE_UID_LEN);
|
|
memmove(data + MIFARE_UID_LEN, data,
|
|
MIFARE_KEY_LEN);
|
|
memcpy(data, uid, MIFARE_UID_LEN);
|
|
}
|
|
|
|
return nfc_hci_send_cmd_async(hdev,
|
|
target->hci_reader_gate,
|
|
PN544_MIFARE_CMD,
|
|
skb->data, skb->len,
|
|
cb, cb_context);
|
|
} else
|
|
return 1;
|
|
case PN544_RF_READER_F_GATE:
|
|
*(u8 *)skb_push(skb, 1) = 0;
|
|
*(u8 *)skb_push(skb, 1) = 0;
|
|
|
|
info->async_cb_type = PN544_CB_TYPE_READER_F;
|
|
info->async_cb = cb;
|
|
info->async_cb_context = cb_context;
|
|
|
|
return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
|
|
PN544_FELICA_RAW, skb->data,
|
|
skb->len,
|
|
pn544_hci_data_exchange_cb, info);
|
|
case PN544_RF_READER_JEWEL_GATE:
|
|
return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
|
|
PN544_JEWEL_RAW_CMD, skb->data,
|
|
skb->len, cb, cb_context);
|
|
case PN544_RF_READER_NFCIP1_INITIATOR_GATE:
|
|
*(u8 *)skb_push(skb, 1) = 0;
|
|
|
|
return nfc_hci_send_event(hdev, target->hci_reader_gate,
|
|
PN544_HCI_EVT_SND_DATA, skb->data,
|
|
skb->len);
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
int r;
|
|
|
|
/* Set default false for multiple information chaining */
|
|
*(u8 *)skb_push(skb, 1) = 0;
|
|
|
|
r = nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,
|
|
PN544_HCI_EVT_SND_DATA, skb->data, skb->len);
|
|
|
|
kfree_skb(skb);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
|
|
struct nfc_target *target)
|
|
{
|
|
pr_debug("supported protocol %d\n", target->supported_protocols);
|
|
if (target->supported_protocols & (NFC_PROTO_ISO14443_MASK |
|
|
NFC_PROTO_ISO14443_B_MASK)) {
|
|
return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
|
|
PN544_RF_READER_CMD_PRESENCE_CHECK,
|
|
NULL, 0, NULL);
|
|
} else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
|
|
if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
|
|
target->nfcid1_len != 10)
|
|
return -EOPNOTSUPP;
|
|
|
|
return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
|
|
PN544_RF_READER_CMD_ACTIVATE_NEXT,
|
|
target->nfcid1, target->nfcid1_len, NULL);
|
|
} else if (target->supported_protocols & (NFC_PROTO_JEWEL_MASK |
|
|
NFC_PROTO_FELICA_MASK)) {
|
|
return -EOPNOTSUPP;
|
|
} else if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
|
|
return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
|
|
PN544_HCI_CMD_ATTREQUEST,
|
|
NULL, 0, NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Returns:
|
|
* <= 0: driver handled the event, skb consumed
|
|
* 1: driver does not handle the event, please do standard processing
|
|
*/
|
|
static int pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct sk_buff *rgb_skb = NULL;
|
|
u8 gate = hdev->pipes[pipe].gate;
|
|
int r;
|
|
|
|
pr_debug("hci event %d\n", event);
|
|
switch (event) {
|
|
case PN544_HCI_EVT_ACTIVATED:
|
|
if (gate == PN544_RF_READER_NFCIP1_INITIATOR_GATE) {
|
|
r = nfc_hci_target_discovered(hdev, gate);
|
|
} else if (gate == PN544_RF_READER_NFCIP1_TARGET_GATE) {
|
|
r = nfc_hci_get_param(hdev, gate, PN544_DEP_ATR_REQ,
|
|
&rgb_skb);
|
|
if (r < 0)
|
|
goto exit;
|
|
|
|
r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
|
|
NFC_COMM_PASSIVE, rgb_skb->data,
|
|
rgb_skb->len);
|
|
|
|
kfree_skb(rgb_skb);
|
|
} else {
|
|
r = -EINVAL;
|
|
}
|
|
break;
|
|
case PN544_HCI_EVT_DEACTIVATED:
|
|
r = nfc_hci_send_event(hdev, gate, NFC_HCI_EVT_END_OPERATION,
|
|
NULL, 0);
|
|
break;
|
|
case PN544_HCI_EVT_RCV_DATA:
|
|
if (skb->len < 2) {
|
|
r = -EPROTO;
|
|
goto exit;
|
|
}
|
|
|
|
if (skb->data[0] != 0) {
|
|
pr_debug("data0 %d\n", skb->data[0]);
|
|
r = -EPROTO;
|
|
goto exit;
|
|
}
|
|
|
|
skb_pull(skb, 2);
|
|
return nfc_tm_data_received(hdev->ndev, skb);
|
|
default:
|
|
return 1;
|
|
}
|
|
|
|
exit:
|
|
kfree_skb(skb);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int pn544_hci_fw_download(struct nfc_hci_dev *hdev,
|
|
const char *firmware_name)
|
|
{
|
|
struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
|
|
if (info->fw_download == NULL)
|
|
return -ENOTSUPP;
|
|
|
|
return info->fw_download(info->phy_id, firmware_name, hdev->sw_romlib);
|
|
}
|
|
|
|
static int pn544_hci_discover_se(struct nfc_hci_dev *hdev)
|
|
{
|
|
u32 se_idx = 0;
|
|
u8 ese_mode = 0x01; /* Default mode */
|
|
struct sk_buff *res_skb;
|
|
int r;
|
|
|
|
r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE, PN544_TEST_SWP,
|
|
NULL, 0, &res_skb);
|
|
|
|
if (r == 0) {
|
|
if (res_skb->len == 2 && res_skb->data[0] == 0x00)
|
|
nfc_add_se(hdev->ndev, se_idx++, NFC_SE_UICC);
|
|
|
|
kfree_skb(res_skb);
|
|
}
|
|
|
|
r = nfc_hci_send_event(hdev, PN544_NFC_WI_MGMT_GATE,
|
|
PN544_HCI_EVT_SWITCH_MODE,
|
|
&ese_mode, 1);
|
|
if (r == 0)
|
|
nfc_add_se(hdev->ndev, se_idx++, NFC_SE_EMBEDDED);
|
|
|
|
return !se_idx;
|
|
}
|
|
|
|
#define PN544_SE_MODE_OFF 0x00
|
|
#define PN544_SE_MODE_ON 0x01
|
|
static int pn544_hci_enable_se(struct nfc_hci_dev *hdev, u32 se_idx)
|
|
{
|
|
const struct nfc_se *se;
|
|
u8 enable = PN544_SE_MODE_ON;
|
|
static struct uicc_gatelist {
|
|
u8 head;
|
|
u8 adr[2];
|
|
u8 value;
|
|
} uicc_gatelist[] = {
|
|
{0x00, {0x9e, 0xd9}, 0x23},
|
|
{0x00, {0x9e, 0xda}, 0x21},
|
|
{0x00, {0x9e, 0xdb}, 0x22},
|
|
{0x00, {0x9e, 0xdc}, 0x24},
|
|
};
|
|
struct uicc_gatelist *p = uicc_gatelist;
|
|
int count = ARRAY_SIZE(uicc_gatelist);
|
|
struct sk_buff *res_skb;
|
|
int r;
|
|
|
|
se = nfc_find_se(hdev->ndev, se_idx);
|
|
|
|
switch (se->type) {
|
|
case NFC_SE_UICC:
|
|
while (count--) {
|
|
r = nfc_hci_send_cmd(hdev, PN544_SYS_MGMT_GATE,
|
|
PN544_WRITE, (u8 *)p, 4, &res_skb);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (res_skb->len != 1) {
|
|
kfree_skb(res_skb);
|
|
return -EPROTO;
|
|
}
|
|
|
|
if (res_skb->data[0] != p->value) {
|
|
kfree_skb(res_skb);
|
|
return -EIO;
|
|
}
|
|
|
|
kfree_skb(res_skb);
|
|
|
|
p++;
|
|
}
|
|
|
|
return nfc_hci_set_param(hdev, PN544_SWP_MGMT_GATE,
|
|
PN544_SWP_DEFAULT_MODE, &enable, 1);
|
|
case NFC_SE_EMBEDDED:
|
|
return nfc_hci_set_param(hdev, PN544_NFC_WI_MGMT_GATE,
|
|
PN544_NFC_ESE_DEFAULT_MODE, &enable, 1);
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int pn544_hci_disable_se(struct nfc_hci_dev *hdev, u32 se_idx)
|
|
{
|
|
const struct nfc_se *se;
|
|
u8 disable = PN544_SE_MODE_OFF;
|
|
|
|
se = nfc_find_se(hdev->ndev, se_idx);
|
|
|
|
switch (se->type) {
|
|
case NFC_SE_UICC:
|
|
return nfc_hci_set_param(hdev, PN544_SWP_MGMT_GATE,
|
|
PN544_SWP_DEFAULT_MODE, &disable, 1);
|
|
case NFC_SE_EMBEDDED:
|
|
return nfc_hci_set_param(hdev, PN544_NFC_WI_MGMT_GATE,
|
|
PN544_NFC_ESE_DEFAULT_MODE, &disable, 1);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static const struct nfc_hci_ops pn544_hci_ops = {
|
|
.open = pn544_hci_open,
|
|
.close = pn544_hci_close,
|
|
.hci_ready = pn544_hci_ready,
|
|
.xmit = pn544_hci_xmit,
|
|
.start_poll = pn544_hci_start_poll,
|
|
.dep_link_up = pn544_hci_dep_link_up,
|
|
.dep_link_down = pn544_hci_dep_link_down,
|
|
.target_from_gate = pn544_hci_target_from_gate,
|
|
.complete_target_discovered = pn544_hci_complete_target_discovered,
|
|
.im_transceive = pn544_hci_im_transceive,
|
|
.tm_send = pn544_hci_tm_send,
|
|
.check_presence = pn544_hci_check_presence,
|
|
.event_received = pn544_hci_event_received,
|
|
.fw_download = pn544_hci_fw_download,
|
|
.discover_se = pn544_hci_discover_se,
|
|
.enable_se = pn544_hci_enable_se,
|
|
.disable_se = pn544_hci_disable_se,
|
|
};
|
|
|
|
int pn544_hci_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
|
|
char *llc_name, int phy_headroom, int phy_tailroom,
|
|
int phy_payload, fw_download_t fw_download,
|
|
struct nfc_hci_dev **hdev)
|
|
{
|
|
struct pn544_hci_info *info;
|
|
u32 protocols;
|
|
struct nfc_hci_init_data init_data;
|
|
int r;
|
|
|
|
info = kzalloc(sizeof(struct pn544_hci_info), GFP_KERNEL);
|
|
if (!info) {
|
|
r = -ENOMEM;
|
|
goto err_info_alloc;
|
|
}
|
|
|
|
info->phy_ops = phy_ops;
|
|
info->phy_id = phy_id;
|
|
info->fw_download = fw_download;
|
|
info->state = PN544_ST_COLD;
|
|
mutex_init(&info->info_lock);
|
|
|
|
init_data.gate_count = ARRAY_SIZE(pn544_gates);
|
|
|
|
memcpy(init_data.gates, pn544_gates, sizeof(pn544_gates));
|
|
|
|
/*
|
|
* TODO: Session id must include the driver name + some bus addr
|
|
* persistent info to discriminate 2 identical chips
|
|
*/
|
|
strcpy(init_data.session_id, "ID544HCI");
|
|
|
|
protocols = NFC_PROTO_JEWEL_MASK |
|
|
NFC_PROTO_MIFARE_MASK |
|
|
NFC_PROTO_FELICA_MASK |
|
|
NFC_PROTO_ISO14443_MASK |
|
|
NFC_PROTO_ISO14443_B_MASK |
|
|
NFC_PROTO_NFC_DEP_MASK;
|
|
|
|
info->hdev = nfc_hci_allocate_device(&pn544_hci_ops, &init_data, 0,
|
|
protocols, llc_name,
|
|
phy_headroom + PN544_CMDS_HEADROOM,
|
|
phy_tailroom, phy_payload);
|
|
if (!info->hdev) {
|
|
pr_err("Cannot allocate nfc hdev\n");
|
|
r = -ENOMEM;
|
|
goto err_alloc_hdev;
|
|
}
|
|
|
|
nfc_hci_set_clientdata(info->hdev, info);
|
|
|
|
r = nfc_hci_register_device(info->hdev);
|
|
if (r)
|
|
goto err_regdev;
|
|
|
|
*hdev = info->hdev;
|
|
|
|
return 0;
|
|
|
|
err_regdev:
|
|
nfc_hci_free_device(info->hdev);
|
|
|
|
err_alloc_hdev:
|
|
kfree(info);
|
|
|
|
err_info_alloc:
|
|
return r;
|
|
}
|
|
EXPORT_SYMBOL(pn544_hci_probe);
|
|
|
|
void pn544_hci_remove(struct nfc_hci_dev *hdev)
|
|
{
|
|
struct pn544_hci_info *info = nfc_hci_get_clientdata(hdev);
|
|
|
|
nfc_hci_unregister_device(hdev);
|
|
nfc_hci_free_device(hdev);
|
|
kfree(info);
|
|
}
|
|
EXPORT_SYMBOL(pn544_hci_remove);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|