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659 lines
16 KiB
659 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. |
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*/ |
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#include <net/nfc/hci.h> |
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#include "st21nfca.h" |
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#define ST21NFCA_NFCIP1_INITIATOR 0x00 |
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#define ST21NFCA_NFCIP1_REQ 0xd4 |
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#define ST21NFCA_NFCIP1_RES 0xd5 |
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#define ST21NFCA_NFCIP1_ATR_REQ 0x00 |
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#define ST21NFCA_NFCIP1_ATR_RES 0x01 |
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#define ST21NFCA_NFCIP1_PSL_REQ 0x04 |
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#define ST21NFCA_NFCIP1_PSL_RES 0x05 |
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#define ST21NFCA_NFCIP1_DEP_REQ 0x06 |
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#define ST21NFCA_NFCIP1_DEP_RES 0x07 |
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#define ST21NFCA_NFC_DEP_PFB_PNI(pfb) ((pfb) & 0x03) |
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#define ST21NFCA_NFC_DEP_PFB_TYPE(pfb) ((pfb) & 0xE0) |
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#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \ |
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((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT) |
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#define ST21NFCA_NFC_DEP_DID_BIT_SET(pfb) ((pfb) & 0x04) |
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#define ST21NFCA_NFC_DEP_NAD_BIT_SET(pfb) ((pfb) & 0x08) |
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#define ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT 0x10 |
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#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \ |
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((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT) |
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#define ST21NFCA_NFC_DEP_PFB_I_PDU 0x00 |
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#define ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU 0x40 |
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#define ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU 0x80 |
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#define ST21NFCA_ATR_REQ_MIN_SIZE 17 |
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#define ST21NFCA_ATR_REQ_MAX_SIZE 65 |
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#define ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B 0x30 |
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#define ST21NFCA_GB_BIT 0x02 |
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#define ST21NFCA_EVT_SEND_DATA 0x10 |
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#define ST21NFCA_EVT_FIELD_ON 0x11 |
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#define ST21NFCA_EVT_CARD_DEACTIVATED 0x12 |
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#define ST21NFCA_EVT_CARD_ACTIVATED 0x13 |
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#define ST21NFCA_EVT_FIELD_OFF 0x14 |
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#define ST21NFCA_EVT_CARD_F_BITRATE 0x16 |
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#define ST21NFCA_EVT_READER_F_BITRATE 0x13 |
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#define ST21NFCA_PSL_REQ_SEND_SPEED(brs) (brs & 0x38) |
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#define ST21NFCA_PSL_REQ_RECV_SPEED(brs) (brs & 0x07) |
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#define ST21NFCA_PP2LRI(pp) ((pp & 0x30) >> 4) |
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#define ST21NFCA_CARD_BITRATE_212 0x01 |
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#define ST21NFCA_CARD_BITRATE_424 0x02 |
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#define ST21NFCA_DEFAULT_TIMEOUT 0x0a |
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#define PROTOCOL_ERR(req) pr_err("%d: ST21NFCA Protocol error: %s\n", \ |
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__LINE__, req) |
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struct st21nfca_atr_req { |
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u8 length; |
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u8 cmd0; |
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u8 cmd1; |
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u8 nfcid3[NFC_NFCID3_MAXSIZE]; |
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u8 did; |
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u8 bsi; |
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u8 bri; |
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u8 ppi; |
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u8 gbi[]; |
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} __packed; |
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struct st21nfca_atr_res { |
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u8 length; |
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u8 cmd0; |
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u8 cmd1; |
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u8 nfcid3[NFC_NFCID3_MAXSIZE]; |
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u8 did; |
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u8 bsi; |
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u8 bri; |
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u8 to; |
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u8 ppi; |
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u8 gbi[]; |
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} __packed; |
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struct st21nfca_psl_req { |
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u8 length; |
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u8 cmd0; |
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u8 cmd1; |
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u8 did; |
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u8 brs; |
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u8 fsl; |
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} __packed; |
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struct st21nfca_psl_res { |
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u8 length; |
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u8 cmd0; |
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u8 cmd1; |
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u8 did; |
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} __packed; |
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struct st21nfca_dep_req_res { |
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u8 length; |
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u8 cmd0; |
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u8 cmd1; |
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u8 pfb; |
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u8 did; |
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u8 nad; |
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} __packed; |
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static void st21nfca_tx_work(struct work_struct *work) |
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{ |
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struct st21nfca_hci_info *info = container_of(work, |
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struct st21nfca_hci_info, |
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dep_info.tx_work); |
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struct nfc_dev *dev; |
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struct sk_buff *skb; |
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if (info) { |
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dev = info->hdev->ndev; |
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skb = info->dep_info.tx_pending; |
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device_lock(&dev->dev); |
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nfc_hci_send_cmd_async(info->hdev, ST21NFCA_RF_READER_F_GATE, |
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ST21NFCA_WR_XCHG_DATA, skb->data, skb->len, |
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info->async_cb, info); |
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device_unlock(&dev->dev); |
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kfree_skb(skb); |
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} |
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} |
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static void st21nfca_im_send_pdu(struct st21nfca_hci_info *info, |
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struct sk_buff *skb) |
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{ |
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info->dep_info.tx_pending = skb; |
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schedule_work(&info->dep_info.tx_work); |
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} |
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static int st21nfca_tm_send_atr_res(struct nfc_hci_dev *hdev, |
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struct st21nfca_atr_req *atr_req) |
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{ |
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struct st21nfca_atr_res *atr_res; |
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struct sk_buff *skb; |
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size_t gb_len; |
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int r; |
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
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gb_len = atr_req->length - sizeof(struct st21nfca_atr_req); |
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skb = alloc_skb(atr_req->length + 1, GFP_KERNEL); |
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if (!skb) |
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return -ENOMEM; |
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skb_put(skb, sizeof(struct st21nfca_atr_res)); |
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atr_res = (struct st21nfca_atr_res *)skb->data; |
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memset(atr_res, 0, sizeof(struct st21nfca_atr_res)); |
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atr_res->length = atr_req->length + 1; |
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atr_res->cmd0 = ST21NFCA_NFCIP1_RES; |
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atr_res->cmd1 = ST21NFCA_NFCIP1_ATR_RES; |
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memcpy(atr_res->nfcid3, atr_req->nfcid3, 6); |
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atr_res->bsi = 0x00; |
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atr_res->bri = 0x00; |
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atr_res->to = ST21NFCA_DEFAULT_TIMEOUT; |
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atr_res->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B; |
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if (gb_len) { |
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skb_put(skb, gb_len); |
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atr_res->ppi |= ST21NFCA_GB_BIT; |
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memcpy(atr_res->gbi, atr_req->gbi, gb_len); |
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r = nfc_set_remote_general_bytes(hdev->ndev, atr_res->gbi, |
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gb_len); |
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if (r < 0) { |
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kfree_skb(skb); |
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return r; |
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} |
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} |
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info->dep_info.curr_nfc_dep_pni = 0; |
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE, |
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ST21NFCA_EVT_SEND_DATA, skb->data, skb->len); |
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kfree_skb(skb); |
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return r; |
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} |
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static int st21nfca_tm_recv_atr_req(struct nfc_hci_dev *hdev, |
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struct sk_buff *skb) |
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{ |
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struct st21nfca_atr_req *atr_req; |
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size_t gb_len; |
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int r; |
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skb_trim(skb, skb->len - 1); |
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if (!skb->len) |
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return -EIO; |
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if (skb->len < ST21NFCA_ATR_REQ_MIN_SIZE) |
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return -EPROTO; |
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atr_req = (struct st21nfca_atr_req *)skb->data; |
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if (atr_req->length < sizeof(struct st21nfca_atr_req)) |
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return -EPROTO; |
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r = st21nfca_tm_send_atr_res(hdev, atr_req); |
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if (r) |
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return r; |
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gb_len = skb->len - sizeof(struct st21nfca_atr_req); |
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r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK, |
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NFC_COMM_PASSIVE, atr_req->gbi, gb_len); |
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if (r) |
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return r; |
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return 0; |
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} |
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static int st21nfca_tm_send_psl_res(struct nfc_hci_dev *hdev, |
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struct st21nfca_psl_req *psl_req) |
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{ |
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struct st21nfca_psl_res *psl_res; |
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struct sk_buff *skb; |
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u8 bitrate[2] = {0, 0}; |
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int r; |
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skb = alloc_skb(sizeof(struct st21nfca_psl_res), GFP_KERNEL); |
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if (!skb) |
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return -ENOMEM; |
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skb_put(skb, sizeof(struct st21nfca_psl_res)); |
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psl_res = (struct st21nfca_psl_res *)skb->data; |
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psl_res->length = sizeof(struct st21nfca_psl_res); |
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psl_res->cmd0 = ST21NFCA_NFCIP1_RES; |
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psl_res->cmd1 = ST21NFCA_NFCIP1_PSL_RES; |
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psl_res->did = psl_req->did; |
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE, |
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ST21NFCA_EVT_SEND_DATA, skb->data, skb->len); |
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if (r < 0) |
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goto error; |
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/* |
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* ST21NFCA only support P2P passive. |
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* PSL_REQ BRS value != 0 has only a meaning to |
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* change technology to type F. |
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* We change to BITRATE 424Kbits. |
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* In other case switch to BITRATE 106Kbits. |
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*/ |
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if (ST21NFCA_PSL_REQ_SEND_SPEED(psl_req->brs) && |
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ST21NFCA_PSL_REQ_RECV_SPEED(psl_req->brs)) { |
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bitrate[0] = ST21NFCA_CARD_BITRATE_424; |
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bitrate[1] = ST21NFCA_CARD_BITRATE_424; |
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} |
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/* Send an event to change bitrate change event to card f */ |
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE, |
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ST21NFCA_EVT_CARD_F_BITRATE, bitrate, 2); |
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error: |
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kfree_skb(skb); |
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return r; |
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} |
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static int st21nfca_tm_recv_psl_req(struct nfc_hci_dev *hdev, |
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struct sk_buff *skb) |
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{ |
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struct st21nfca_psl_req *psl_req; |
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skb_trim(skb, skb->len - 1); |
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if (!skb->len) |
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return -EIO; |
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psl_req = (struct st21nfca_psl_req *)skb->data; |
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if (skb->len < sizeof(struct st21nfca_psl_req)) |
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return -EIO; |
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return st21nfca_tm_send_psl_res(hdev, psl_req); |
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} |
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int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb) |
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{ |
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int r; |
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
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*(u8 *)skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni; |
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*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_RES; |
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*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_RES; |
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*(u8 *)skb_push(skb, 1) = skb->len; |
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r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE, |
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ST21NFCA_EVT_SEND_DATA, skb->data, skb->len); |
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kfree_skb(skb); |
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return r; |
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} |
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EXPORT_SYMBOL(st21nfca_tm_send_dep_res); |
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static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev, |
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struct sk_buff *skb) |
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{ |
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struct st21nfca_dep_req_res *dep_req; |
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u8 size; |
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
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skb_trim(skb, skb->len - 1); |
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size = 4; |
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dep_req = (struct st21nfca_dep_req_res *)skb->data; |
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if (skb->len < size) |
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return -EIO; |
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if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_req->pfb)) |
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size++; |
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if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_req->pfb)) |
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size++; |
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if (skb->len < size) |
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return -EIO; |
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/* Receiving DEP_REQ - Decoding */ |
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switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_req->pfb)) { |
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case ST21NFCA_NFC_DEP_PFB_I_PDU: |
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info->dep_info.curr_nfc_dep_pni = |
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ST21NFCA_NFC_DEP_PFB_PNI(dep_req->pfb); |
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break; |
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case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU: |
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pr_err("Received a ACK/NACK PDU\n"); |
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break; |
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case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU: |
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pr_err("Received a SUPERVISOR PDU\n"); |
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break; |
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} |
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skb_pull(skb, size); |
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return nfc_tm_data_received(hdev->ndev, skb); |
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} |
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static int st21nfca_tm_event_send_data(struct nfc_hci_dev *hdev, |
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struct sk_buff *skb) |
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{ |
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u8 cmd0, cmd1; |
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int r; |
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cmd0 = skb->data[1]; |
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switch (cmd0) { |
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case ST21NFCA_NFCIP1_REQ: |
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cmd1 = skb->data[2]; |
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switch (cmd1) { |
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case ST21NFCA_NFCIP1_ATR_REQ: |
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r = st21nfca_tm_recv_atr_req(hdev, skb); |
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break; |
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case ST21NFCA_NFCIP1_PSL_REQ: |
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r = st21nfca_tm_recv_psl_req(hdev, skb); |
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break; |
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case ST21NFCA_NFCIP1_DEP_REQ: |
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r = st21nfca_tm_recv_dep_req(hdev, skb); |
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break; |
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default: |
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return 1; |
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} |
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break; |
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default: |
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return 1; |
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} |
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return r; |
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} |
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/* |
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* Returns: |
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* <= 0: driver handled the event, skb consumed |
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* 1: driver does not handle the event, please do standard processing |
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*/ |
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int st21nfca_dep_event_received(struct nfc_hci_dev *hdev, |
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u8 event, struct sk_buff *skb) |
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{ |
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int r = 0; |
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
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pr_debug("dep event: %d\n", event); |
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switch (event) { |
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case ST21NFCA_EVT_CARD_ACTIVATED: |
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info->dep_info.curr_nfc_dep_pni = 0; |
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break; |
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case ST21NFCA_EVT_CARD_DEACTIVATED: |
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break; |
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case ST21NFCA_EVT_FIELD_ON: |
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break; |
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case ST21NFCA_EVT_FIELD_OFF: |
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break; |
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case ST21NFCA_EVT_SEND_DATA: |
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r = st21nfca_tm_event_send_data(hdev, skb); |
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if (r < 0) |
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return r; |
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return 0; |
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default: |
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nfc_err(&hdev->ndev->dev, "Unexpected event on card f gate\n"); |
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return 1; |
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} |
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kfree_skb(skb); |
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return r; |
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} |
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EXPORT_SYMBOL(st21nfca_dep_event_received); |
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static void st21nfca_im_send_psl_req(struct nfc_hci_dev *hdev, u8 did, u8 bsi, |
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u8 bri, u8 lri) |
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{ |
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struct sk_buff *skb; |
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struct st21nfca_psl_req *psl_req; |
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
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skb = |
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alloc_skb(sizeof(struct st21nfca_psl_req) + 1, GFP_KERNEL); |
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if (!skb) |
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return; |
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skb_reserve(skb, 1); |
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skb_put(skb, sizeof(struct st21nfca_psl_req)); |
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psl_req = (struct st21nfca_psl_req *) skb->data; |
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psl_req->length = sizeof(struct st21nfca_psl_req); |
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psl_req->cmd0 = ST21NFCA_NFCIP1_REQ; |
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psl_req->cmd1 = ST21NFCA_NFCIP1_PSL_REQ; |
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psl_req->did = did; |
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psl_req->brs = (0x30 & bsi << 4) | (bri & 0x03); |
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psl_req->fsl = lri; |
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*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; |
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st21nfca_im_send_pdu(info, skb); |
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} |
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#define ST21NFCA_CB_TYPE_READER_F 1 |
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static void st21nfca_im_recv_atr_res_cb(void *context, struct sk_buff *skb, |
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int err) |
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{ |
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struct st21nfca_hci_info *info = context; |
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struct st21nfca_atr_res *atr_res; |
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int r; |
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if (err != 0) |
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return; |
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if (!skb) |
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return; |
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switch (info->async_cb_type) { |
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case ST21NFCA_CB_TYPE_READER_F: |
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skb_trim(skb, skb->len - 1); |
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atr_res = (struct st21nfca_atr_res *)skb->data; |
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r = nfc_set_remote_general_bytes(info->hdev->ndev, |
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atr_res->gbi, |
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skb->len - sizeof(struct st21nfca_atr_res)); |
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if (r < 0) |
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return; |
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if (atr_res->to >= 0x0e) |
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info->dep_info.to = 0x0e; |
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else |
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info->dep_info.to = atr_res->to + 1; |
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info->dep_info.to |= 0x10; |
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r = nfc_dep_link_is_up(info->hdev->ndev, info->dep_info.idx, |
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NFC_COMM_PASSIVE, NFC_RF_INITIATOR); |
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if (r < 0) |
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return; |
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info->dep_info.curr_nfc_dep_pni = 0; |
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if (ST21NFCA_PP2LRI(atr_res->ppi) != info->dep_info.lri) |
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st21nfca_im_send_psl_req(info->hdev, atr_res->did, |
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atr_res->bsi, atr_res->bri, |
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ST21NFCA_PP2LRI(atr_res->ppi)); |
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break; |
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default: |
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kfree_skb(skb); |
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break; |
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} |
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} |
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int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len) |
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{ |
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struct sk_buff *skb; |
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struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
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struct st21nfca_atr_req *atr_req; |
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struct nfc_target *target; |
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uint size; |
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info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT; |
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size = ST21NFCA_ATR_REQ_MIN_SIZE + gb_len; |
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if (size > ST21NFCA_ATR_REQ_MAX_SIZE) { |
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PROTOCOL_ERR("14.6.1.1"); |
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return -EINVAL; |
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} |
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skb = |
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alloc_skb(sizeof(struct st21nfca_atr_req) + gb_len + 1, GFP_KERNEL); |
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if (!skb) |
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return -ENOMEM; |
|
|
|
skb_reserve(skb, 1); |
|
|
|
skb_put(skb, sizeof(struct st21nfca_atr_req)); |
|
|
|
atr_req = (struct st21nfca_atr_req *)skb->data; |
|
memset(atr_req, 0, sizeof(struct st21nfca_atr_req)); |
|
|
|
atr_req->cmd0 = ST21NFCA_NFCIP1_REQ; |
|
atr_req->cmd1 = ST21NFCA_NFCIP1_ATR_REQ; |
|
memset(atr_req->nfcid3, 0, NFC_NFCID3_MAXSIZE); |
|
target = hdev->ndev->targets; |
|
|
|
if (target->sensf_res_len > 0) |
|
memcpy(atr_req->nfcid3, target->sensf_res, |
|
target->sensf_res_len); |
|
else |
|
get_random_bytes(atr_req->nfcid3, NFC_NFCID3_MAXSIZE); |
|
|
|
atr_req->did = 0x0; |
|
|
|
atr_req->bsi = 0x00; |
|
atr_req->bri = 0x00; |
|
atr_req->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B; |
|
if (gb_len) { |
|
atr_req->ppi |= ST21NFCA_GB_BIT; |
|
skb_put_data(skb, gb, gb_len); |
|
} |
|
atr_req->length = sizeof(struct st21nfca_atr_req) + hdev->gb_len; |
|
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; /* timeout */ |
|
|
|
info->async_cb_type = ST21NFCA_CB_TYPE_READER_F; |
|
info->async_cb_context = info; |
|
info->async_cb = st21nfca_im_recv_atr_res_cb; |
|
info->dep_info.bri = atr_req->bri; |
|
info->dep_info.bsi = atr_req->bsi; |
|
info->dep_info.lri = ST21NFCA_PP2LRI(atr_req->ppi); |
|
|
|
return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE, |
|
ST21NFCA_WR_XCHG_DATA, skb->data, |
|
skb->len, info->async_cb, info); |
|
} |
|
EXPORT_SYMBOL(st21nfca_im_send_atr_req); |
|
|
|
static void st21nfca_im_recv_dep_res_cb(void *context, struct sk_buff *skb, |
|
int err) |
|
{ |
|
struct st21nfca_hci_info *info = context; |
|
struct st21nfca_dep_req_res *dep_res; |
|
|
|
int size; |
|
|
|
if (err != 0) |
|
return; |
|
|
|
if (!skb) |
|
return; |
|
|
|
switch (info->async_cb_type) { |
|
case ST21NFCA_CB_TYPE_READER_F: |
|
dep_res = (struct st21nfca_dep_req_res *)skb->data; |
|
|
|
size = 3; |
|
if (skb->len < size) |
|
goto exit; |
|
|
|
if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_res->pfb)) |
|
size++; |
|
if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_res->pfb)) |
|
size++; |
|
|
|
if (skb->len < size) |
|
goto exit; |
|
|
|
skb_trim(skb, skb->len - 1); |
|
|
|
/* Receiving DEP_REQ - Decoding */ |
|
switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_res->pfb)) { |
|
case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU: |
|
pr_err("Received a ACK/NACK PDU\n"); |
|
fallthrough; |
|
case ST21NFCA_NFC_DEP_PFB_I_PDU: |
|
info->dep_info.curr_nfc_dep_pni = |
|
ST21NFCA_NFC_DEP_PFB_PNI(dep_res->pfb + 1); |
|
size++; |
|
skb_pull(skb, size); |
|
nfc_tm_data_received(info->hdev->ndev, skb); |
|
break; |
|
case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU: |
|
pr_err("Received a SUPERVISOR PDU\n"); |
|
skb_pull(skb, size); |
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ; |
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ; |
|
*(u8 *)skb_push(skb, 1) = skb->len; |
|
*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; |
|
|
|
st21nfca_im_send_pdu(info, skb); |
|
break; |
|
} |
|
|
|
return; |
|
default: |
|
break; |
|
} |
|
|
|
exit: |
|
kfree_skb(skb); |
|
} |
|
|
|
int st21nfca_im_send_dep_req(struct nfc_hci_dev *hdev, struct sk_buff *skb) |
|
{ |
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
|
|
|
info->async_cb_type = ST21NFCA_CB_TYPE_READER_F; |
|
info->async_cb_context = info; |
|
info->async_cb = st21nfca_im_recv_dep_res_cb; |
|
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni; |
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ; |
|
*(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ; |
|
*(u8 *)skb_push(skb, 1) = skb->len; |
|
|
|
*(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; |
|
|
|
return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE, |
|
ST21NFCA_WR_XCHG_DATA, |
|
skb->data, skb->len, |
|
info->async_cb, info); |
|
} |
|
EXPORT_SYMBOL(st21nfca_im_send_dep_req); |
|
|
|
void st21nfca_dep_init(struct nfc_hci_dev *hdev) |
|
{ |
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
|
|
|
INIT_WORK(&info->dep_info.tx_work, st21nfca_tx_work); |
|
info->dep_info.curr_nfc_dep_pni = 0; |
|
info->dep_info.idx = 0; |
|
info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT; |
|
} |
|
EXPORT_SYMBOL(st21nfca_dep_init); |
|
|
|
void st21nfca_dep_deinit(struct nfc_hci_dev *hdev) |
|
{ |
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
|
|
|
cancel_work_sync(&info->dep_info.tx_work); |
|
} |
|
EXPORT_SYMBOL(st21nfca_dep_deinit);
|
|
|