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![Johannes Berg](/assets/img/avatar_default.png)
Joe and Bjørn suggested that it'd be nicer to not have the cast in the fairly common case of doing *(u8 *)skb_put(skb, 1) = c; Add skb_put_u8() for this case, and use it across the code, using the following spatch: @@ expression SKB, C, S; typedef u8; identifier fn = {skb_put}; fresh identifier fn2 = fn ## "_u8"; @@ - *(u8 *)fn(SKB, S) = C; + fn2(SKB, C); Note that due to the "S", the spatch isn't perfect, it should have checked that S is 1, but there's also places that use a sizeof expression like sizeof(var) or sizeof(u8) etc. Turns out that nobody ever did something like *(u8 *)skb_put(skb, 2) = c; which would be wrong anyway since the second byte wouldn't be initialized. Suggested-by: Joe Perches <joe@perches.com> Suggested-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1661 lines
43 KiB
C
1661 lines
43 KiB
C
/*
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* Sony NFC Port-100 Series driver
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* Copyright (c) 2013, Intel Corporation.
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*
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* Partly based/Inspired by Stephen Tiedemann's nfcpy
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <net/nfc/digital.h>
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#define VERSION "0.1"
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#define SONY_VENDOR_ID 0x054c
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#define RCS380S_PRODUCT_ID 0x06c1
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#define RCS380P_PRODUCT_ID 0x06c3
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#define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
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NFC_PROTO_MIFARE_MASK | \
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NFC_PROTO_FELICA_MASK | \
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NFC_PROTO_NFC_DEP_MASK | \
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NFC_PROTO_ISO14443_MASK | \
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NFC_PROTO_ISO14443_B_MASK)
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#define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \
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NFC_DIGITAL_DRV_CAPS_TG_CRC)
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/* Standard port100 frame definitions */
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#define PORT100_FRAME_HEADER_LEN (sizeof(struct port100_frame) \
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+ 2) /* data[0] CC, data[1] SCC */
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#define PORT100_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/
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#define PORT100_COMM_RF_HEAD_MAX_LEN (sizeof(struct port100_tg_comm_rf_cmd))
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/*
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* Max extended frame payload len, excluding CC and SCC
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* which are already in PORT100_FRAME_HEADER_LEN.
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*/
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#define PORT100_FRAME_MAX_PAYLOAD_LEN 1001
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#define PORT100_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2),
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Postamble (1) */
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static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = {
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0x00, 0x00, 0xff, 0x00, 0xff, 0x00
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};
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#define PORT100_FRAME_CHECKSUM(f) (f->data[le16_to_cpu(f->datalen)])
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#define PORT100_FRAME_POSTAMBLE(f) (f->data[le16_to_cpu(f->datalen) + 1])
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/* start of frame */
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#define PORT100_FRAME_SOF 0x00FF
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#define PORT100_FRAME_EXT 0xFFFF
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#define PORT100_FRAME_ACK 0x00FF
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/* Port-100 command: in or out */
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#define PORT100_FRAME_DIRECTION(f) (f->data[0]) /* CC */
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#define PORT100_FRAME_DIR_OUT 0xD6
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#define PORT100_FRAME_DIR_IN 0xD7
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/* Port-100 sub-command */
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#define PORT100_FRAME_CMD(f) (f->data[1]) /* SCC */
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#define PORT100_CMD_GET_FIRMWARE_VERSION 0x20
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#define PORT100_CMD_GET_COMMAND_TYPE 0x28
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#define PORT100_CMD_SET_COMMAND_TYPE 0x2A
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#define PORT100_CMD_IN_SET_RF 0x00
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#define PORT100_CMD_IN_SET_PROTOCOL 0x02
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#define PORT100_CMD_IN_COMM_RF 0x04
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#define PORT100_CMD_TG_SET_RF 0x40
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#define PORT100_CMD_TG_SET_PROTOCOL 0x42
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#define PORT100_CMD_TG_SET_RF_OFF 0x46
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#define PORT100_CMD_TG_COMM_RF 0x48
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#define PORT100_CMD_SWITCH_RF 0x06
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#define PORT100_CMD_RESPONSE(cmd) (cmd + 1)
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#define PORT100_CMD_TYPE_IS_SUPPORTED(mask, cmd_type) \
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((mask) & (0x01 << (cmd_type)))
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#define PORT100_CMD_TYPE_0 0
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#define PORT100_CMD_TYPE_1 1
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#define PORT100_CMD_STATUS_OK 0x00
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#define PORT100_CMD_STATUS_TIMEOUT 0x80
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#define PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK 0x01
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#define PORT100_MDAA_TGT_WAS_ACTIVATED_MASK 0x02
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struct port100;
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typedef void (*port100_send_async_complete_t)(struct port100 *dev, void *arg,
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struct sk_buff *resp);
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/**
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* Setting sets structure for in_set_rf command
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*
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* @in_*_set_number: Represent the entry indexes in the port-100 RF Base Table.
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* This table contains multiple RF setting sets required for RF
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* communication.
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*
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* @in_*_comm_type: Theses fields set the communication type to be used.
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*/
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struct port100_in_rf_setting {
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u8 in_send_set_number;
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u8 in_send_comm_type;
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u8 in_recv_set_number;
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u8 in_recv_comm_type;
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} __packed;
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#define PORT100_COMM_TYPE_IN_212F 0x01
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#define PORT100_COMM_TYPE_IN_424F 0x02
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#define PORT100_COMM_TYPE_IN_106A 0x03
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#define PORT100_COMM_TYPE_IN_106B 0x07
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static const struct port100_in_rf_setting in_rf_settings[] = {
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[NFC_DIGITAL_RF_TECH_212F] = {
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.in_send_set_number = 1,
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.in_send_comm_type = PORT100_COMM_TYPE_IN_212F,
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.in_recv_set_number = 15,
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.in_recv_comm_type = PORT100_COMM_TYPE_IN_212F,
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},
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[NFC_DIGITAL_RF_TECH_424F] = {
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.in_send_set_number = 1,
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.in_send_comm_type = PORT100_COMM_TYPE_IN_424F,
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.in_recv_set_number = 15,
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.in_recv_comm_type = PORT100_COMM_TYPE_IN_424F,
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},
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[NFC_DIGITAL_RF_TECH_106A] = {
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.in_send_set_number = 2,
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.in_send_comm_type = PORT100_COMM_TYPE_IN_106A,
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.in_recv_set_number = 15,
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.in_recv_comm_type = PORT100_COMM_TYPE_IN_106A,
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},
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[NFC_DIGITAL_RF_TECH_106B] = {
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.in_send_set_number = 3,
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.in_send_comm_type = PORT100_COMM_TYPE_IN_106B,
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.in_recv_set_number = 15,
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.in_recv_comm_type = PORT100_COMM_TYPE_IN_106B,
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},
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/* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */
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[NFC_DIGITAL_RF_TECH_LAST] = { 0 },
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};
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/**
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* Setting sets structure for tg_set_rf command
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*
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* @tg_set_number: Represents the entry index in the port-100 RF Base Table.
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* This table contains multiple RF setting sets required for RF
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* communication. this field is used for both send and receive
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* settings.
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*
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* @tg_comm_type: Sets the communication type to be used to send and receive
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* data.
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*/
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struct port100_tg_rf_setting {
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u8 tg_set_number;
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u8 tg_comm_type;
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} __packed;
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#define PORT100_COMM_TYPE_TG_106A 0x0B
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#define PORT100_COMM_TYPE_TG_212F 0x0C
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#define PORT100_COMM_TYPE_TG_424F 0x0D
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static const struct port100_tg_rf_setting tg_rf_settings[] = {
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[NFC_DIGITAL_RF_TECH_106A] = {
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.tg_set_number = 8,
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.tg_comm_type = PORT100_COMM_TYPE_TG_106A,
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},
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[NFC_DIGITAL_RF_TECH_212F] = {
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.tg_set_number = 8,
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.tg_comm_type = PORT100_COMM_TYPE_TG_212F,
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},
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[NFC_DIGITAL_RF_TECH_424F] = {
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.tg_set_number = 8,
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.tg_comm_type = PORT100_COMM_TYPE_TG_424F,
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},
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/* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */
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[NFC_DIGITAL_RF_TECH_LAST] = { 0 },
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};
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#define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00
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#define PORT100_IN_PROT_ADD_CRC 0x01
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#define PORT100_IN_PROT_CHECK_CRC 0x02
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#define PORT100_IN_PROT_MULTI_CARD 0x03
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#define PORT100_IN_PROT_ADD_PARITY 0x04
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#define PORT100_IN_PROT_CHECK_PARITY 0x05
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#define PORT100_IN_PROT_BITWISE_AC_RECV_MODE 0x06
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#define PORT100_IN_PROT_VALID_BIT_NUMBER 0x07
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#define PORT100_IN_PROT_CRYPTO1 0x08
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#define PORT100_IN_PROT_ADD_SOF 0x09
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#define PORT100_IN_PROT_CHECK_SOF 0x0A
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#define PORT100_IN_PROT_ADD_EOF 0x0B
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#define PORT100_IN_PROT_CHECK_EOF 0x0C
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#define PORT100_IN_PROT_DEAF_TIME 0x0E
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#define PORT100_IN_PROT_CRM 0x0F
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#define PORT100_IN_PROT_CRM_MIN_LEN 0x10
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#define PORT100_IN_PROT_T1_TAG_FRAME 0x11
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#define PORT100_IN_PROT_RFCA 0x12
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#define PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR 0x13
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#define PORT100_IN_PROT_END 0x14
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#define PORT100_IN_MAX_NUM_PROTOCOLS 19
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#define PORT100_TG_PROT_TU 0x00
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#define PORT100_TG_PROT_RF_OFF 0x01
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#define PORT100_TG_PROT_CRM 0x02
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#define PORT100_TG_PROT_END 0x03
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#define PORT100_TG_MAX_NUM_PROTOCOLS 3
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struct port100_protocol {
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u8 number;
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u8 value;
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} __packed;
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static struct port100_protocol
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in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = {
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[NFC_DIGITAL_FRAMING_NFCA_SHORT] = {
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{ PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 },
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{ PORT100_IN_PROT_ADD_CRC, 0 },
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{ PORT100_IN_PROT_CHECK_CRC, 0 },
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{ PORT100_IN_PROT_MULTI_CARD, 0 },
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{ PORT100_IN_PROT_ADD_PARITY, 0 },
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{ PORT100_IN_PROT_CHECK_PARITY, 1 },
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{ PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 7 },
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{ PORT100_IN_PROT_CRYPTO1, 0 },
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{ PORT100_IN_PROT_ADD_SOF, 0 },
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{ PORT100_IN_PROT_CHECK_SOF, 0 },
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{ PORT100_IN_PROT_ADD_EOF, 0 },
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{ PORT100_IN_PROT_CHECK_EOF, 0 },
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{ PORT100_IN_PROT_DEAF_TIME, 4 },
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{ PORT100_IN_PROT_CRM, 0 },
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{ PORT100_IN_PROT_CRM_MIN_LEN, 0 },
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{ PORT100_IN_PROT_T1_TAG_FRAME, 0 },
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{ PORT100_IN_PROT_RFCA, 0 },
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{ PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCA_STANDARD] = {
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{ PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 },
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{ PORT100_IN_PROT_ADD_CRC, 0 },
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{ PORT100_IN_PROT_CHECK_CRC, 0 },
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{ PORT100_IN_PROT_MULTI_CARD, 0 },
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{ PORT100_IN_PROT_ADD_PARITY, 1 },
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{ PORT100_IN_PROT_CHECK_PARITY, 1 },
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{ PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 8 },
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{ PORT100_IN_PROT_CRYPTO1, 0 },
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{ PORT100_IN_PROT_ADD_SOF, 0 },
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{ PORT100_IN_PROT_CHECK_SOF, 0 },
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{ PORT100_IN_PROT_ADD_EOF, 0 },
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{ PORT100_IN_PROT_CHECK_EOF, 0 },
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{ PORT100_IN_PROT_DEAF_TIME, 4 },
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{ PORT100_IN_PROT_CRM, 0 },
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{ PORT100_IN_PROT_CRM_MIN_LEN, 0 },
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{ PORT100_IN_PROT_T1_TAG_FRAME, 0 },
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{ PORT100_IN_PROT_RFCA, 0 },
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{ PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = {
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{ PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 },
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{ PORT100_IN_PROT_ADD_CRC, 1 },
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{ PORT100_IN_PROT_CHECK_CRC, 1 },
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{ PORT100_IN_PROT_MULTI_CARD, 0 },
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{ PORT100_IN_PROT_ADD_PARITY, 1 },
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{ PORT100_IN_PROT_CHECK_PARITY, 1 },
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{ PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 8 },
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{ PORT100_IN_PROT_CRYPTO1, 0 },
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{ PORT100_IN_PROT_ADD_SOF, 0 },
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{ PORT100_IN_PROT_CHECK_SOF, 0 },
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{ PORT100_IN_PROT_ADD_EOF, 0 },
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{ PORT100_IN_PROT_CHECK_EOF, 0 },
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{ PORT100_IN_PROT_DEAF_TIME, 4 },
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{ PORT100_IN_PROT_CRM, 0 },
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{ PORT100_IN_PROT_CRM_MIN_LEN, 0 },
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{ PORT100_IN_PROT_T1_TAG_FRAME, 0 },
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{ PORT100_IN_PROT_RFCA, 0 },
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{ PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCA_T1T] = {
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/* nfc_digital_framing_nfca_short */
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{ PORT100_IN_PROT_ADD_CRC, 2 },
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{ PORT100_IN_PROT_CHECK_CRC, 2 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 8 },
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{ PORT100_IN_PROT_T1_TAG_FRAME, 2 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCA_T2T] = {
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/* nfc_digital_framing_nfca_standard */
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{ PORT100_IN_PROT_ADD_CRC, 1 },
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{ PORT100_IN_PROT_CHECK_CRC, 0 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCA_T4T] = {
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/* nfc_digital_framing_nfca_standard_with_crc_a */
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = {
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/* nfc_digital_framing_nfca_standard */
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCF] = {
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{ PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 },
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{ PORT100_IN_PROT_ADD_CRC, 1 },
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{ PORT100_IN_PROT_CHECK_CRC, 1 },
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{ PORT100_IN_PROT_MULTI_CARD, 0 },
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{ PORT100_IN_PROT_ADD_PARITY, 0 },
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{ PORT100_IN_PROT_CHECK_PARITY, 0 },
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{ PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 8 },
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{ PORT100_IN_PROT_CRYPTO1, 0 },
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{ PORT100_IN_PROT_ADD_SOF, 0 },
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{ PORT100_IN_PROT_CHECK_SOF, 0 },
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{ PORT100_IN_PROT_ADD_EOF, 0 },
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{ PORT100_IN_PROT_CHECK_EOF, 0 },
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{ PORT100_IN_PROT_DEAF_TIME, 4 },
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{ PORT100_IN_PROT_CRM, 0 },
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{ PORT100_IN_PROT_CRM_MIN_LEN, 0 },
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{ PORT100_IN_PROT_T1_TAG_FRAME, 0 },
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{ PORT100_IN_PROT_RFCA, 0 },
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{ PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCF_T3T] = {
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/* nfc_digital_framing_nfcf */
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = {
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/* nfc_digital_framing_nfcf */
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{ PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 },
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{ PORT100_IN_PROT_ADD_CRC, 1 },
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{ PORT100_IN_PROT_CHECK_CRC, 1 },
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{ PORT100_IN_PROT_MULTI_CARD, 0 },
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{ PORT100_IN_PROT_ADD_PARITY, 0 },
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{ PORT100_IN_PROT_CHECK_PARITY, 0 },
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{ PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 8 },
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{ PORT100_IN_PROT_CRYPTO1, 0 },
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{ PORT100_IN_PROT_ADD_SOF, 0 },
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{ PORT100_IN_PROT_CHECK_SOF, 0 },
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{ PORT100_IN_PROT_ADD_EOF, 0 },
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{ PORT100_IN_PROT_CHECK_EOF, 0 },
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{ PORT100_IN_PROT_DEAF_TIME, 4 },
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{ PORT100_IN_PROT_CRM, 0 },
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{ PORT100_IN_PROT_CRM_MIN_LEN, 0 },
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{ PORT100_IN_PROT_T1_TAG_FRAME, 0 },
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{ PORT100_IN_PROT_RFCA, 0 },
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{ PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 },
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{ PORT100_IN_PROT_END, 0 },
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},
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[NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = {
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{ PORT100_IN_PROT_END, 0 },
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},
|
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[NFC_DIGITAL_FRAMING_NFCB] = {
|
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{ PORT100_IN_PROT_INITIAL_GUARD_TIME, 20 },
|
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{ PORT100_IN_PROT_ADD_CRC, 1 },
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{ PORT100_IN_PROT_CHECK_CRC, 1 },
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{ PORT100_IN_PROT_MULTI_CARD, 0 },
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{ PORT100_IN_PROT_ADD_PARITY, 0 },
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{ PORT100_IN_PROT_CHECK_PARITY, 0 },
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{ PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 },
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{ PORT100_IN_PROT_VALID_BIT_NUMBER, 8 },
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{ PORT100_IN_PROT_CRYPTO1, 0 },
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{ PORT100_IN_PROT_ADD_SOF, 1 },
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{ PORT100_IN_PROT_CHECK_SOF, 1 },
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{ PORT100_IN_PROT_ADD_EOF, 1 },
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{ PORT100_IN_PROT_CHECK_EOF, 1 },
|
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{ PORT100_IN_PROT_DEAF_TIME, 4 },
|
|
{ PORT100_IN_PROT_CRM, 0 },
|
|
{ PORT100_IN_PROT_CRM_MIN_LEN, 0 },
|
|
{ PORT100_IN_PROT_T1_TAG_FRAME, 0 },
|
|
{ PORT100_IN_PROT_RFCA, 0 },
|
|
{ PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 },
|
|
{ PORT100_IN_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCB_T4T] = {
|
|
/* nfc_digital_framing_nfcb */
|
|
{ PORT100_IN_PROT_END, 0 },
|
|
},
|
|
/* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */
|
|
[NFC_DIGITAL_FRAMING_LAST] = {
|
|
{ PORT100_IN_PROT_END, 0 },
|
|
},
|
|
};
|
|
|
|
static struct port100_protocol
|
|
tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = {
|
|
[NFC_DIGITAL_FRAMING_NFCA_SHORT] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCA_STANDARD] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCA_T1T] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCA_T2T] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = {
|
|
{ PORT100_TG_PROT_TU, 1 },
|
|
{ PORT100_TG_PROT_RF_OFF, 0 },
|
|
{ PORT100_TG_PROT_CRM, 7 },
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCF] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCF_T3T] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = {
|
|
{ PORT100_TG_PROT_TU, 1 },
|
|
{ PORT100_TG_PROT_RF_OFF, 0 },
|
|
{ PORT100_TG_PROT_CRM, 7 },
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
[NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = {
|
|
{ PORT100_TG_PROT_RF_OFF, 1 },
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
/* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */
|
|
[NFC_DIGITAL_FRAMING_LAST] = {
|
|
{ PORT100_TG_PROT_END, 0 },
|
|
},
|
|
};
|
|
|
|
struct port100 {
|
|
struct nfc_digital_dev *nfc_digital_dev;
|
|
|
|
int skb_headroom;
|
|
int skb_tailroom;
|
|
|
|
struct usb_device *udev;
|
|
struct usb_interface *interface;
|
|
|
|
struct urb *out_urb;
|
|
struct urb *in_urb;
|
|
|
|
/* This mutex protects the out_urb and avoids to submit a new command
|
|
* through port100_send_frame_async() while the previous one is being
|
|
* canceled through port100_abort_cmd().
|
|
*/
|
|
struct mutex out_urb_lock;
|
|
|
|
struct work_struct cmd_complete_work;
|
|
|
|
u8 cmd_type;
|
|
|
|
/* The digital stack serializes commands to be sent. There is no need
|
|
* for any queuing/locking mechanism at driver level.
|
|
*/
|
|
struct port100_cmd *cmd;
|
|
|
|
bool cmd_cancel;
|
|
struct completion cmd_cancel_done;
|
|
};
|
|
|
|
struct port100_cmd {
|
|
u8 code;
|
|
int status;
|
|
struct sk_buff *req;
|
|
struct sk_buff *resp;
|
|
int resp_len;
|
|
port100_send_async_complete_t complete_cb;
|
|
void *complete_cb_context;
|
|
};
|
|
|
|
struct port100_frame {
|
|
u8 preamble;
|
|
__be16 start_frame;
|
|
__be16 extended_frame;
|
|
__le16 datalen;
|
|
u8 datalen_checksum;
|
|
u8 data[];
|
|
} __packed;
|
|
|
|
struct port100_ack_frame {
|
|
u8 preamble;
|
|
__be16 start_frame;
|
|
__be16 ack_frame;
|
|
u8 postambule;
|
|
} __packed;
|
|
|
|
struct port100_cb_arg {
|
|
nfc_digital_cmd_complete_t complete_cb;
|
|
void *complete_arg;
|
|
u8 mdaa;
|
|
};
|
|
|
|
struct port100_tg_comm_rf_cmd {
|
|
__le16 guard_time;
|
|
__le16 send_timeout;
|
|
u8 mdaa;
|
|
u8 nfca_param[6];
|
|
u8 nfcf_param[18];
|
|
u8 mf_halted;
|
|
u8 arae_flag;
|
|
__le16 recv_timeout;
|
|
u8 data[];
|
|
} __packed;
|
|
|
|
struct port100_tg_comm_rf_res {
|
|
u8 comm_type;
|
|
u8 ar_status;
|
|
u8 target_activated;
|
|
__le32 status;
|
|
u8 data[];
|
|
} __packed;
|
|
|
|
/* The rule: value + checksum = 0 */
|
|
static inline u8 port100_checksum(u16 value)
|
|
{
|
|
return ~(((u8 *)&value)[0] + ((u8 *)&value)[1]) + 1;
|
|
}
|
|
|
|
/* The rule: sum(data elements) + checksum = 0 */
|
|
static u8 port100_data_checksum(u8 *data, int datalen)
|
|
{
|
|
u8 sum = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < datalen; i++)
|
|
sum += data[i];
|
|
|
|
return port100_checksum(sum);
|
|
}
|
|
|
|
static void port100_tx_frame_init(void *_frame, u8 cmd_code)
|
|
{
|
|
struct port100_frame *frame = _frame;
|
|
|
|
frame->preamble = 0;
|
|
frame->start_frame = cpu_to_be16(PORT100_FRAME_SOF);
|
|
frame->extended_frame = cpu_to_be16(PORT100_FRAME_EXT);
|
|
PORT100_FRAME_DIRECTION(frame) = PORT100_FRAME_DIR_OUT;
|
|
PORT100_FRAME_CMD(frame) = cmd_code;
|
|
frame->datalen = cpu_to_le16(2);
|
|
}
|
|
|
|
static void port100_tx_frame_finish(void *_frame)
|
|
{
|
|
struct port100_frame *frame = _frame;
|
|
|
|
frame->datalen_checksum = port100_checksum(le16_to_cpu(frame->datalen));
|
|
|
|
PORT100_FRAME_CHECKSUM(frame) =
|
|
port100_data_checksum(frame->data, le16_to_cpu(frame->datalen));
|
|
|
|
PORT100_FRAME_POSTAMBLE(frame) = 0;
|
|
}
|
|
|
|
static void port100_tx_update_payload_len(void *_frame, int len)
|
|
{
|
|
struct port100_frame *frame = _frame;
|
|
|
|
frame->datalen = cpu_to_le16(le16_to_cpu(frame->datalen) + len);
|
|
}
|
|
|
|
static bool port100_rx_frame_is_valid(void *_frame)
|
|
{
|
|
u8 checksum;
|
|
struct port100_frame *frame = _frame;
|
|
|
|
if (frame->start_frame != cpu_to_be16(PORT100_FRAME_SOF) ||
|
|
frame->extended_frame != cpu_to_be16(PORT100_FRAME_EXT))
|
|
return false;
|
|
|
|
checksum = port100_checksum(le16_to_cpu(frame->datalen));
|
|
if (checksum != frame->datalen_checksum)
|
|
return false;
|
|
|
|
checksum = port100_data_checksum(frame->data,
|
|
le16_to_cpu(frame->datalen));
|
|
if (checksum != PORT100_FRAME_CHECKSUM(frame))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool port100_rx_frame_is_ack(struct port100_ack_frame *frame)
|
|
{
|
|
return (frame->start_frame == cpu_to_be16(PORT100_FRAME_SOF) &&
|
|
frame->ack_frame == cpu_to_be16(PORT100_FRAME_ACK));
|
|
}
|
|
|
|
static inline int port100_rx_frame_size(void *frame)
|
|
{
|
|
struct port100_frame *f = frame;
|
|
|
|
return sizeof(struct port100_frame) + le16_to_cpu(f->datalen) +
|
|
PORT100_FRAME_TAIL_LEN;
|
|
}
|
|
|
|
static bool port100_rx_frame_is_cmd_response(struct port100 *dev, void *frame)
|
|
{
|
|
struct port100_frame *f = frame;
|
|
|
|
return (PORT100_FRAME_CMD(f) == PORT100_CMD_RESPONSE(dev->cmd->code));
|
|
}
|
|
|
|
static void port100_recv_response(struct urb *urb)
|
|
{
|
|
struct port100 *dev = urb->context;
|
|
struct port100_cmd *cmd = dev->cmd;
|
|
u8 *in_frame;
|
|
|
|
cmd->status = urb->status;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break; /* success */
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
nfc_err(&dev->interface->dev,
|
|
"The urb has been canceled (status %d)\n", urb->status);
|
|
goto sched_wq;
|
|
case -ESHUTDOWN:
|
|
default:
|
|
nfc_err(&dev->interface->dev, "Urb failure (status %d)\n",
|
|
urb->status);
|
|
goto sched_wq;
|
|
}
|
|
|
|
in_frame = dev->in_urb->transfer_buffer;
|
|
|
|
if (!port100_rx_frame_is_valid(in_frame)) {
|
|
nfc_err(&dev->interface->dev, "Received an invalid frame\n");
|
|
cmd->status = -EIO;
|
|
goto sched_wq;
|
|
}
|
|
|
|
print_hex_dump_debug("PORT100 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame,
|
|
port100_rx_frame_size(in_frame), false);
|
|
|
|
if (!port100_rx_frame_is_cmd_response(dev, in_frame)) {
|
|
nfc_err(&dev->interface->dev,
|
|
"It's not the response to the last command\n");
|
|
cmd->status = -EIO;
|
|
goto sched_wq;
|
|
}
|
|
|
|
sched_wq:
|
|
schedule_work(&dev->cmd_complete_work);
|
|
}
|
|
|
|
static int port100_submit_urb_for_response(struct port100 *dev, gfp_t flags)
|
|
{
|
|
dev->in_urb->complete = port100_recv_response;
|
|
|
|
return usb_submit_urb(dev->in_urb, flags);
|
|
}
|
|
|
|
static void port100_recv_ack(struct urb *urb)
|
|
{
|
|
struct port100 *dev = urb->context;
|
|
struct port100_cmd *cmd = dev->cmd;
|
|
struct port100_ack_frame *in_frame;
|
|
int rc;
|
|
|
|
cmd->status = urb->status;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break; /* success */
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
nfc_err(&dev->interface->dev,
|
|
"The urb has been stopped (status %d)\n", urb->status);
|
|
goto sched_wq;
|
|
case -ESHUTDOWN:
|
|
default:
|
|
nfc_err(&dev->interface->dev, "Urb failure (status %d)\n",
|
|
urb->status);
|
|
goto sched_wq;
|
|
}
|
|
|
|
in_frame = dev->in_urb->transfer_buffer;
|
|
|
|
if (!port100_rx_frame_is_ack(in_frame)) {
|
|
nfc_err(&dev->interface->dev, "Received an invalid ack\n");
|
|
cmd->status = -EIO;
|
|
goto sched_wq;
|
|
}
|
|
|
|
rc = port100_submit_urb_for_response(dev, GFP_ATOMIC);
|
|
if (rc) {
|
|
nfc_err(&dev->interface->dev,
|
|
"usb_submit_urb failed with result %d\n", rc);
|
|
cmd->status = rc;
|
|
goto sched_wq;
|
|
}
|
|
|
|
return;
|
|
|
|
sched_wq:
|
|
schedule_work(&dev->cmd_complete_work);
|
|
}
|
|
|
|
static int port100_submit_urb_for_ack(struct port100 *dev, gfp_t flags)
|
|
{
|
|
dev->in_urb->complete = port100_recv_ack;
|
|
|
|
return usb_submit_urb(dev->in_urb, flags);
|
|
}
|
|
|
|
static int port100_send_ack(struct port100 *dev)
|
|
{
|
|
int rc = 0;
|
|
|
|
mutex_lock(&dev->out_urb_lock);
|
|
|
|
/*
|
|
* If prior cancel is in-flight (dev->cmd_cancel == true), we
|
|
* can skip to send cancel. Then this will wait the prior
|
|
* cancel, or merged into the next cancel rarely if next
|
|
* cancel was started before waiting done. In any case, this
|
|
* will be waked up soon or later.
|
|
*/
|
|
if (!dev->cmd_cancel) {
|
|
reinit_completion(&dev->cmd_cancel_done);
|
|
|
|
usb_kill_urb(dev->out_urb);
|
|
|
|
dev->out_urb->transfer_buffer = ack_frame;
|
|
dev->out_urb->transfer_buffer_length = sizeof(ack_frame);
|
|
rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
|
|
|
|
/*
|
|
* Set the cmd_cancel flag only if the URB has been
|
|
* successfully submitted. It will be reset by the out
|
|
* URB completion callback port100_send_complete().
|
|
*/
|
|
dev->cmd_cancel = !rc;
|
|
}
|
|
|
|
mutex_unlock(&dev->out_urb_lock);
|
|
|
|
if (!rc)
|
|
wait_for_completion(&dev->cmd_cancel_done);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int port100_send_frame_async(struct port100 *dev, struct sk_buff *out,
|
|
struct sk_buff *in, int in_len)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&dev->out_urb_lock);
|
|
|
|
/* A command cancel frame as been sent through dev->out_urb. Don't try
|
|
* to submit a new one.
|
|
*/
|
|
if (dev->cmd_cancel) {
|
|
rc = -EAGAIN;
|
|
goto exit;
|
|
}
|
|
|
|
dev->out_urb->transfer_buffer = out->data;
|
|
dev->out_urb->transfer_buffer_length = out->len;
|
|
|
|
dev->in_urb->transfer_buffer = in->data;
|
|
dev->in_urb->transfer_buffer_length = in_len;
|
|
|
|
print_hex_dump_debug("PORT100 TX: ", DUMP_PREFIX_NONE, 16, 1,
|
|
out->data, out->len, false);
|
|
|
|
rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
|
|
if (rc)
|
|
goto exit;
|
|
|
|
rc = port100_submit_urb_for_ack(dev, GFP_KERNEL);
|
|
if (rc)
|
|
usb_unlink_urb(dev->out_urb);
|
|
|
|
exit:
|
|
mutex_unlock(&dev->out_urb_lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void port100_build_cmd_frame(struct port100 *dev, u8 cmd_code,
|
|
struct sk_buff *skb)
|
|
{
|
|
/* payload is already there, just update datalen */
|
|
int payload_len = skb->len;
|
|
|
|
skb_push(skb, PORT100_FRAME_HEADER_LEN);
|
|
skb_put(skb, PORT100_FRAME_TAIL_LEN);
|
|
|
|
port100_tx_frame_init(skb->data, cmd_code);
|
|
port100_tx_update_payload_len(skb->data, payload_len);
|
|
port100_tx_frame_finish(skb->data);
|
|
}
|
|
|
|
static void port100_send_async_complete(struct port100 *dev)
|
|
{
|
|
struct port100_cmd *cmd = dev->cmd;
|
|
int status = cmd->status;
|
|
|
|
struct sk_buff *req = cmd->req;
|
|
struct sk_buff *resp = cmd->resp;
|
|
|
|
dev_kfree_skb(req);
|
|
|
|
dev->cmd = NULL;
|
|
|
|
if (status < 0) {
|
|
cmd->complete_cb(dev, cmd->complete_cb_context,
|
|
ERR_PTR(status));
|
|
dev_kfree_skb(resp);
|
|
goto done;
|
|
}
|
|
|
|
skb_put(resp, port100_rx_frame_size(resp->data));
|
|
skb_pull(resp, PORT100_FRAME_HEADER_LEN);
|
|
skb_trim(resp, resp->len - PORT100_FRAME_TAIL_LEN);
|
|
|
|
cmd->complete_cb(dev, cmd->complete_cb_context, resp);
|
|
|
|
done:
|
|
kfree(cmd);
|
|
}
|
|
|
|
static int port100_send_cmd_async(struct port100 *dev, u8 cmd_code,
|
|
struct sk_buff *req,
|
|
port100_send_async_complete_t complete_cb,
|
|
void *complete_cb_context)
|
|
{
|
|
struct port100_cmd *cmd;
|
|
struct sk_buff *resp;
|
|
int rc;
|
|
int resp_len = PORT100_FRAME_HEADER_LEN +
|
|
PORT100_FRAME_MAX_PAYLOAD_LEN +
|
|
PORT100_FRAME_TAIL_LEN;
|
|
|
|
if (dev->cmd) {
|
|
nfc_err(&dev->interface->dev,
|
|
"A command is still in process\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
resp = alloc_skb(resp_len, GFP_KERNEL);
|
|
if (!resp)
|
|
return -ENOMEM;
|
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
|
|
if (!cmd) {
|
|
dev_kfree_skb(resp);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cmd->code = cmd_code;
|
|
cmd->req = req;
|
|
cmd->resp = resp;
|
|
cmd->resp_len = resp_len;
|
|
cmd->complete_cb = complete_cb;
|
|
cmd->complete_cb_context = complete_cb_context;
|
|
|
|
port100_build_cmd_frame(dev, cmd_code, req);
|
|
|
|
dev->cmd = cmd;
|
|
|
|
rc = port100_send_frame_async(dev, req, resp, resp_len);
|
|
if (rc) {
|
|
kfree(cmd);
|
|
dev_kfree_skb(resp);
|
|
dev->cmd = NULL;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
struct port100_sync_cmd_response {
|
|
struct sk_buff *resp;
|
|
struct completion done;
|
|
};
|
|
|
|
static void port100_wq_cmd_complete(struct work_struct *work)
|
|
{
|
|
struct port100 *dev = container_of(work, struct port100,
|
|
cmd_complete_work);
|
|
|
|
port100_send_async_complete(dev);
|
|
}
|
|
|
|
static void port100_send_sync_complete(struct port100 *dev, void *_arg,
|
|
struct sk_buff *resp)
|
|
{
|
|
struct port100_sync_cmd_response *arg = _arg;
|
|
|
|
arg->resp = resp;
|
|
complete(&arg->done);
|
|
}
|
|
|
|
static struct sk_buff *port100_send_cmd_sync(struct port100 *dev, u8 cmd_code,
|
|
struct sk_buff *req)
|
|
{
|
|
int rc;
|
|
struct port100_sync_cmd_response arg;
|
|
|
|
init_completion(&arg.done);
|
|
|
|
rc = port100_send_cmd_async(dev, cmd_code, req,
|
|
port100_send_sync_complete, &arg);
|
|
if (rc) {
|
|
dev_kfree_skb(req);
|
|
return ERR_PTR(rc);
|
|
}
|
|
|
|
wait_for_completion(&arg.done);
|
|
|
|
return arg.resp;
|
|
}
|
|
|
|
static void port100_send_complete(struct urb *urb)
|
|
{
|
|
struct port100 *dev = urb->context;
|
|
|
|
if (dev->cmd_cancel) {
|
|
complete_all(&dev->cmd_cancel_done);
|
|
dev->cmd_cancel = false;
|
|
}
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break; /* success */
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
nfc_err(&dev->interface->dev,
|
|
"The urb has been stopped (status %d)\n", urb->status);
|
|
break;
|
|
case -ESHUTDOWN:
|
|
default:
|
|
nfc_err(&dev->interface->dev, "Urb failure (status %d)\n",
|
|
urb->status);
|
|
}
|
|
}
|
|
|
|
static void port100_abort_cmd(struct nfc_digital_dev *ddev)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
|
|
/* An ack will cancel the last issued command */
|
|
port100_send_ack(dev);
|
|
|
|
/* cancel the urb request */
|
|
usb_kill_urb(dev->in_urb);
|
|
}
|
|
|
|
static struct sk_buff *port100_alloc_skb(struct port100 *dev, unsigned int size)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
skb = alloc_skb(dev->skb_headroom + dev->skb_tailroom + size,
|
|
GFP_KERNEL);
|
|
if (skb)
|
|
skb_reserve(skb, dev->skb_headroom);
|
|
|
|
return skb;
|
|
}
|
|
|
|
static int port100_set_command_type(struct port100 *dev, u8 command_type)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
int rc;
|
|
|
|
skb = port100_alloc_skb(dev, 1);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put_u8(skb, command_type);
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_SET_COMMAND_TYPE, skb);
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
rc = resp->data[0];
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static u64 port100_get_command_type_mask(struct port100 *dev)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
u64 mask;
|
|
|
|
skb = port100_alloc_skb(dev, 0);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb);
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
if (resp->len < 8)
|
|
mask = 0;
|
|
else
|
|
mask = be64_to_cpu(*(__be64 *)resp->data);
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return mask;
|
|
}
|
|
|
|
static u16 port100_get_firmware_version(struct port100 *dev)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
u16 fw_ver;
|
|
|
|
skb = port100_alloc_skb(dev, 0);
|
|
if (!skb)
|
|
return 0;
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_FIRMWARE_VERSION,
|
|
skb);
|
|
if (IS_ERR(resp))
|
|
return 0;
|
|
|
|
fw_ver = le16_to_cpu(*(__le16 *)resp->data);
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return fw_ver;
|
|
}
|
|
|
|
static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct sk_buff *skb, *resp;
|
|
|
|
skb = port100_alloc_skb(dev, 1);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put_u8(skb, on ? 1 : 0);
|
|
|
|
/* Cancel the last command if the device is being switched off */
|
|
if (!on)
|
|
port100_abort_cmd(ddev);
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_SWITCH_RF, skb);
|
|
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int port100_in_set_rf(struct nfc_digital_dev *ddev, u8 rf)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
int rc;
|
|
|
|
if (rf >= NFC_DIGITAL_RF_TECH_LAST)
|
|
return -EINVAL;
|
|
|
|
skb = port100_alloc_skb(dev, sizeof(struct port100_in_rf_setting));
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put_data(skb, &in_rf_settings[rf],
|
|
sizeof(struct port100_in_rf_setting));
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_RF, skb);
|
|
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
rc = resp->data[0];
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int port100_in_set_framing(struct nfc_digital_dev *ddev, int param)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct port100_protocol *protocols;
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
int num_protocols;
|
|
size_t size;
|
|
int rc;
|
|
|
|
if (param >= NFC_DIGITAL_FRAMING_LAST)
|
|
return -EINVAL;
|
|
|
|
protocols = in_protocols[param];
|
|
|
|
num_protocols = 0;
|
|
while (protocols[num_protocols].number != PORT100_IN_PROT_END)
|
|
num_protocols++;
|
|
|
|
if (!num_protocols)
|
|
return 0;
|
|
|
|
size = sizeof(struct port100_protocol) * num_protocols;
|
|
|
|
skb = port100_alloc_skb(dev, size);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put_data(skb, protocols, size);
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_PROTOCOL, skb);
|
|
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
rc = resp->data[0];
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type,
|
|
int param)
|
|
{
|
|
if (type == NFC_DIGITAL_CONFIG_RF_TECH)
|
|
return port100_in_set_rf(ddev, param);
|
|
|
|
if (type == NFC_DIGITAL_CONFIG_FRAMING)
|
|
return port100_in_set_framing(ddev, param);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void port100_in_comm_rf_complete(struct port100 *dev, void *arg,
|
|
struct sk_buff *resp)
|
|
{
|
|
struct port100_cb_arg *cb_arg = arg;
|
|
nfc_digital_cmd_complete_t cb = cb_arg->complete_cb;
|
|
u32 status;
|
|
int rc;
|
|
|
|
if (IS_ERR(resp)) {
|
|
rc = PTR_ERR(resp);
|
|
goto exit;
|
|
}
|
|
|
|
if (resp->len < 4) {
|
|
nfc_err(&dev->interface->dev,
|
|
"Invalid packet length received\n");
|
|
rc = -EIO;
|
|
goto error;
|
|
}
|
|
|
|
status = le32_to_cpu(*(__le32 *)resp->data);
|
|
|
|
skb_pull(resp, sizeof(u32));
|
|
|
|
if (status == PORT100_CMD_STATUS_TIMEOUT) {
|
|
rc = -ETIMEDOUT;
|
|
goto error;
|
|
}
|
|
|
|
if (status != PORT100_CMD_STATUS_OK) {
|
|
nfc_err(&dev->interface->dev,
|
|
"in_comm_rf failed with status 0x%08x\n", status);
|
|
rc = -EIO;
|
|
goto error;
|
|
}
|
|
|
|
/* Remove collision bits byte */
|
|
skb_pull(resp, 1);
|
|
|
|
goto exit;
|
|
|
|
error:
|
|
kfree_skb(resp);
|
|
resp = ERR_PTR(rc);
|
|
|
|
exit:
|
|
cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp);
|
|
|
|
kfree(cb_arg);
|
|
}
|
|
|
|
static int port100_in_send_cmd(struct nfc_digital_dev *ddev,
|
|
struct sk_buff *skb, u16 _timeout,
|
|
nfc_digital_cmd_complete_t cb, void *arg)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct port100_cb_arg *cb_arg;
|
|
__le16 timeout;
|
|
|
|
cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL);
|
|
if (!cb_arg)
|
|
return -ENOMEM;
|
|
|
|
cb_arg->complete_cb = cb;
|
|
cb_arg->complete_arg = arg;
|
|
|
|
timeout = cpu_to_le16(_timeout * 10);
|
|
|
|
memcpy(skb_push(skb, sizeof(__le16)), &timeout, sizeof(__le16));
|
|
|
|
return port100_send_cmd_async(dev, PORT100_CMD_IN_COMM_RF, skb,
|
|
port100_in_comm_rf_complete, cb_arg);
|
|
}
|
|
|
|
static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
int rc;
|
|
|
|
if (rf >= NFC_DIGITAL_RF_TECH_LAST)
|
|
return -EINVAL;
|
|
|
|
skb = port100_alloc_skb(dev, sizeof(struct port100_tg_rf_setting));
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put_data(skb, &tg_rf_settings[rf],
|
|
sizeof(struct port100_tg_rf_setting));
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_RF, skb);
|
|
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
rc = resp->data[0];
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct port100_protocol *protocols;
|
|
struct sk_buff *skb;
|
|
struct sk_buff *resp;
|
|
int rc;
|
|
int num_protocols;
|
|
size_t size;
|
|
|
|
if (param >= NFC_DIGITAL_FRAMING_LAST)
|
|
return -EINVAL;
|
|
|
|
protocols = tg_protocols[param];
|
|
|
|
num_protocols = 0;
|
|
while (protocols[num_protocols].number != PORT100_TG_PROT_END)
|
|
num_protocols++;
|
|
|
|
if (!num_protocols)
|
|
return 0;
|
|
|
|
size = sizeof(struct port100_protocol) * num_protocols;
|
|
|
|
skb = port100_alloc_skb(dev, size);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
skb_put_data(skb, protocols, size);
|
|
|
|
resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_PROTOCOL, skb);
|
|
|
|
if (IS_ERR(resp))
|
|
return PTR_ERR(resp);
|
|
|
|
rc = resp->data[0];
|
|
|
|
dev_kfree_skb(resp);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type,
|
|
int param)
|
|
{
|
|
if (type == NFC_DIGITAL_CONFIG_RF_TECH)
|
|
return port100_tg_set_rf(ddev, param);
|
|
|
|
if (type == NFC_DIGITAL_CONFIG_FRAMING)
|
|
return port100_tg_set_framing(ddev, param);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static bool port100_tg_target_activated(struct port100 *dev, u8 tgt_activated)
|
|
{
|
|
u8 mask;
|
|
|
|
switch (dev->cmd_type) {
|
|
case PORT100_CMD_TYPE_0:
|
|
mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK;
|
|
break;
|
|
case PORT100_CMD_TYPE_1:
|
|
mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK |
|
|
PORT100_MDAA_TGT_WAS_ACTIVATED_MASK;
|
|
break;
|
|
default:
|
|
nfc_err(&dev->interface->dev, "Unknown command type\n");
|
|
return false;
|
|
}
|
|
|
|
return ((tgt_activated & mask) == mask);
|
|
}
|
|
|
|
static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg,
|
|
struct sk_buff *resp)
|
|
{
|
|
u32 status;
|
|
struct port100_cb_arg *cb_arg = arg;
|
|
nfc_digital_cmd_complete_t cb = cb_arg->complete_cb;
|
|
struct port100_tg_comm_rf_res *hdr;
|
|
|
|
if (IS_ERR(resp))
|
|
goto exit;
|
|
|
|
hdr = (struct port100_tg_comm_rf_res *)resp->data;
|
|
|
|
status = le32_to_cpu(hdr->status);
|
|
|
|
if (cb_arg->mdaa &&
|
|
!port100_tg_target_activated(dev, hdr->target_activated)) {
|
|
kfree_skb(resp);
|
|
resp = ERR_PTR(-ETIMEDOUT);
|
|
|
|
goto exit;
|
|
}
|
|
|
|
skb_pull(resp, sizeof(struct port100_tg_comm_rf_res));
|
|
|
|
if (status != PORT100_CMD_STATUS_OK) {
|
|
kfree_skb(resp);
|
|
|
|
if (status == PORT100_CMD_STATUS_TIMEOUT)
|
|
resp = ERR_PTR(-ETIMEDOUT);
|
|
else
|
|
resp = ERR_PTR(-EIO);
|
|
}
|
|
|
|
exit:
|
|
cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp);
|
|
|
|
kfree(cb_arg);
|
|
}
|
|
|
|
static int port100_tg_send_cmd(struct nfc_digital_dev *ddev,
|
|
struct sk_buff *skb, u16 timeout,
|
|
nfc_digital_cmd_complete_t cb, void *arg)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct port100_tg_comm_rf_cmd *hdr;
|
|
struct port100_cb_arg *cb_arg;
|
|
|
|
cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL);
|
|
if (!cb_arg)
|
|
return -ENOMEM;
|
|
|
|
cb_arg->complete_cb = cb;
|
|
cb_arg->complete_arg = arg;
|
|
|
|
skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd));
|
|
|
|
hdr = (struct port100_tg_comm_rf_cmd *)skb->data;
|
|
|
|
memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd));
|
|
hdr->guard_time = cpu_to_le16(500);
|
|
hdr->send_timeout = cpu_to_le16(0xFFFF);
|
|
hdr->recv_timeout = cpu_to_le16(timeout);
|
|
|
|
return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb,
|
|
port100_tg_comm_rf_complete, cb_arg);
|
|
}
|
|
|
|
static int port100_listen_mdaa(struct nfc_digital_dev *ddev,
|
|
struct digital_tg_mdaa_params *params,
|
|
u16 timeout,
|
|
nfc_digital_cmd_complete_t cb, void *arg)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct port100_tg_comm_rf_cmd *hdr;
|
|
struct port100_cb_arg *cb_arg;
|
|
struct sk_buff *skb;
|
|
int rc;
|
|
|
|
rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH,
|
|
NFC_DIGITAL_RF_TECH_106A);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING,
|
|
NFC_DIGITAL_FRAMING_NFCA_NFC_DEP);
|
|
if (rc)
|
|
return rc;
|
|
|
|
cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL);
|
|
if (!cb_arg)
|
|
return -ENOMEM;
|
|
|
|
cb_arg->complete_cb = cb;
|
|
cb_arg->complete_arg = arg;
|
|
cb_arg->mdaa = 1;
|
|
|
|
skb = port100_alloc_skb(dev, 0);
|
|
if (!skb) {
|
|
kfree(cb_arg);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd));
|
|
hdr = (struct port100_tg_comm_rf_cmd *)skb->data;
|
|
|
|
memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd));
|
|
|
|
hdr->guard_time = 0;
|
|
hdr->send_timeout = cpu_to_le16(0xFFFF);
|
|
hdr->mdaa = 1;
|
|
hdr->nfca_param[0] = (params->sens_res >> 8) & 0xFF;
|
|
hdr->nfca_param[1] = params->sens_res & 0xFF;
|
|
memcpy(hdr->nfca_param + 2, params->nfcid1, 3);
|
|
hdr->nfca_param[5] = params->sel_res;
|
|
memcpy(hdr->nfcf_param, params->nfcid2, 8);
|
|
hdr->nfcf_param[16] = (params->sc >> 8) & 0xFF;
|
|
hdr->nfcf_param[17] = params->sc & 0xFF;
|
|
hdr->recv_timeout = cpu_to_le16(timeout);
|
|
|
|
return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb,
|
|
port100_tg_comm_rf_complete, cb_arg);
|
|
}
|
|
|
|
static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout,
|
|
nfc_digital_cmd_complete_t cb, void *arg)
|
|
{
|
|
struct port100 *dev = nfc_digital_get_drvdata(ddev);
|
|
struct sk_buff *skb;
|
|
|
|
skb = port100_alloc_skb(dev, 0);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
return port100_tg_send_cmd(ddev, skb, timeout, cb, arg);
|
|
}
|
|
|
|
static struct nfc_digital_ops port100_digital_ops = {
|
|
.in_configure_hw = port100_in_configure_hw,
|
|
.in_send_cmd = port100_in_send_cmd,
|
|
|
|
.tg_listen_mdaa = port100_listen_mdaa,
|
|
.tg_listen = port100_listen,
|
|
.tg_configure_hw = port100_tg_configure_hw,
|
|
.tg_send_cmd = port100_tg_send_cmd,
|
|
|
|
.switch_rf = port100_switch_rf,
|
|
.abort_cmd = port100_abort_cmd,
|
|
};
|
|
|
|
static const struct usb_device_id port100_table[] = {
|
|
{ USB_DEVICE(SONY_VENDOR_ID, RCS380S_PRODUCT_ID), },
|
|
{ USB_DEVICE(SONY_VENDOR_ID, RCS380P_PRODUCT_ID), },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, port100_table);
|
|
|
|
static int port100_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct port100 *dev;
|
|
int rc;
|
|
struct usb_host_interface *iface_desc;
|
|
struct usb_endpoint_descriptor *endpoint;
|
|
int in_endpoint;
|
|
int out_endpoint;
|
|
u16 fw_version;
|
|
u64 cmd_type_mask;
|
|
int i;
|
|
|
|
dev = devm_kzalloc(&interface->dev, sizeof(struct port100), GFP_KERNEL);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&dev->out_urb_lock);
|
|
dev->udev = usb_get_dev(interface_to_usbdev(interface));
|
|
dev->interface = interface;
|
|
usb_set_intfdata(interface, dev);
|
|
|
|
in_endpoint = out_endpoint = 0;
|
|
iface_desc = interface->cur_altsetting;
|
|
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
|
|
endpoint = &iface_desc->endpoint[i].desc;
|
|
|
|
if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint))
|
|
in_endpoint = endpoint->bEndpointAddress;
|
|
|
|
if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint))
|
|
out_endpoint = endpoint->bEndpointAddress;
|
|
}
|
|
|
|
if (!in_endpoint || !out_endpoint) {
|
|
nfc_err(&interface->dev,
|
|
"Could not find bulk-in or bulk-out endpoint\n");
|
|
rc = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
|
if (!dev->in_urb || !dev->out_urb) {
|
|
nfc_err(&interface->dev, "Could not allocate USB URBs\n");
|
|
rc = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
usb_fill_bulk_urb(dev->in_urb, dev->udev,
|
|
usb_rcvbulkpipe(dev->udev, in_endpoint),
|
|
NULL, 0, NULL, dev);
|
|
usb_fill_bulk_urb(dev->out_urb, dev->udev,
|
|
usb_sndbulkpipe(dev->udev, out_endpoint),
|
|
NULL, 0, port100_send_complete, dev);
|
|
dev->out_urb->transfer_flags = URB_ZERO_PACKET;
|
|
|
|
dev->skb_headroom = PORT100_FRAME_HEADER_LEN +
|
|
PORT100_COMM_RF_HEAD_MAX_LEN;
|
|
dev->skb_tailroom = PORT100_FRAME_TAIL_LEN;
|
|
|
|
init_completion(&dev->cmd_cancel_done);
|
|
INIT_WORK(&dev->cmd_complete_work, port100_wq_cmd_complete);
|
|
|
|
/* The first thing to do with the Port-100 is to set the command type
|
|
* to be used. If supported we use command type 1. 0 otherwise.
|
|
*/
|
|
cmd_type_mask = port100_get_command_type_mask(dev);
|
|
if (!cmd_type_mask) {
|
|
nfc_err(&interface->dev,
|
|
"Could not get supported command types\n");
|
|
rc = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
if (PORT100_CMD_TYPE_IS_SUPPORTED(cmd_type_mask, PORT100_CMD_TYPE_1))
|
|
dev->cmd_type = PORT100_CMD_TYPE_1;
|
|
else
|
|
dev->cmd_type = PORT100_CMD_TYPE_0;
|
|
|
|
rc = port100_set_command_type(dev, dev->cmd_type);
|
|
if (rc) {
|
|
nfc_err(&interface->dev,
|
|
"The device does not support command type %u\n",
|
|
dev->cmd_type);
|
|
goto error;
|
|
}
|
|
|
|
fw_version = port100_get_firmware_version(dev);
|
|
if (!fw_version)
|
|
nfc_err(&interface->dev,
|
|
"Could not get device firmware version\n");
|
|
|
|
nfc_info(&interface->dev,
|
|
"Sony NFC Port-100 Series attached (firmware v%x.%02x)\n",
|
|
(fw_version & 0xFF00) >> 8, fw_version & 0xFF);
|
|
|
|
dev->nfc_digital_dev = nfc_digital_allocate_device(&port100_digital_ops,
|
|
PORT100_PROTOCOLS,
|
|
PORT100_CAPABILITIES,
|
|
dev->skb_headroom,
|
|
dev->skb_tailroom);
|
|
if (!dev->nfc_digital_dev) {
|
|
nfc_err(&interface->dev,
|
|
"Could not allocate nfc_digital_dev\n");
|
|
rc = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
nfc_digital_set_parent_dev(dev->nfc_digital_dev, &interface->dev);
|
|
nfc_digital_set_drvdata(dev->nfc_digital_dev, dev);
|
|
|
|
rc = nfc_digital_register_device(dev->nfc_digital_dev);
|
|
if (rc) {
|
|
nfc_err(&interface->dev,
|
|
"Could not register digital device\n");
|
|
goto free_nfc_dev;
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_nfc_dev:
|
|
nfc_digital_free_device(dev->nfc_digital_dev);
|
|
|
|
error:
|
|
usb_free_urb(dev->in_urb);
|
|
usb_free_urb(dev->out_urb);
|
|
usb_put_dev(dev->udev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void port100_disconnect(struct usb_interface *interface)
|
|
{
|
|
struct port100 *dev;
|
|
|
|
dev = usb_get_intfdata(interface);
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
nfc_digital_unregister_device(dev->nfc_digital_dev);
|
|
nfc_digital_free_device(dev->nfc_digital_dev);
|
|
|
|
usb_kill_urb(dev->in_urb);
|
|
usb_kill_urb(dev->out_urb);
|
|
|
|
usb_free_urb(dev->in_urb);
|
|
usb_free_urb(dev->out_urb);
|
|
usb_put_dev(dev->udev);
|
|
|
|
kfree(dev->cmd);
|
|
|
|
nfc_info(&interface->dev, "Sony Port-100 NFC device disconnected\n");
|
|
}
|
|
|
|
static struct usb_driver port100_driver = {
|
|
.name = "port100",
|
|
.probe = port100_probe,
|
|
.disconnect = port100_disconnect,
|
|
.id_table = port100_table,
|
|
};
|
|
|
|
module_usb_driver(port100_driver);
|
|
|
|
MODULE_DESCRIPTION("NFC Port-100 series usb driver ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|