12025cf9eSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2562d4d59SThierry Escande /* 3562d4d59SThierry Escande * Sony NFC Port-100 Series driver 4562d4d59SThierry Escande * Copyright (c) 2013, Intel Corporation. 5562d4d59SThierry Escande * 6562d4d59SThierry Escande * Partly based/Inspired by Stephen Tiedemann's nfcpy 7562d4d59SThierry Escande */ 8562d4d59SThierry Escande 9562d4d59SThierry Escande #include <linux/module.h> 10562d4d59SThierry Escande #include <linux/usb.h> 11562d4d59SThierry Escande #include <net/nfc/digital.h> 12562d4d59SThierry Escande 13562d4d59SThierry Escande #define VERSION "0.1" 14562d4d59SThierry Escande 15562d4d59SThierry Escande #define SONY_VENDOR_ID 0x054c 169728ee92SOGAWA Hirofumi #define RCS380S_PRODUCT_ID 0x06c1 179728ee92SOGAWA Hirofumi #define RCS380P_PRODUCT_ID 0x06c3 18562d4d59SThierry Escande 19562d4d59SThierry Escande #define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ 20562d4d59SThierry Escande NFC_PROTO_MIFARE_MASK | \ 21562d4d59SThierry Escande NFC_PROTO_FELICA_MASK | \ 222a26f9a2SThierry Escande NFC_PROTO_NFC_DEP_MASK | \ 2309592ccfSThierry Escande NFC_PROTO_ISO14443_MASK | \ 2409592ccfSThierry Escande NFC_PROTO_ISO14443_B_MASK) 25562d4d59SThierry Escande 26562d4d59SThierry Escande #define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \ 27562d4d59SThierry Escande NFC_DIGITAL_DRV_CAPS_TG_CRC) 28562d4d59SThierry Escande 290347a6abSThierry Escande /* Standard port100 frame definitions */ 300347a6abSThierry Escande #define PORT100_FRAME_HEADER_LEN (sizeof(struct port100_frame) \ 310347a6abSThierry Escande + 2) /* data[0] CC, data[1] SCC */ 320347a6abSThierry Escande #define PORT100_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ 330347a6abSThierry Escande 340347a6abSThierry Escande #define PORT100_COMM_RF_HEAD_MAX_LEN (sizeof(struct port100_tg_comm_rf_cmd)) 350347a6abSThierry Escande 360347a6abSThierry Escande /* 370347a6abSThierry Escande * Max extended frame payload len, excluding CC and SCC 380347a6abSThierry Escande * which are already in PORT100_FRAME_HEADER_LEN. 390347a6abSThierry Escande */ 400347a6abSThierry Escande #define PORT100_FRAME_MAX_PAYLOAD_LEN 1001 410347a6abSThierry Escande 420347a6abSThierry Escande #define PORT100_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), 430347a6abSThierry Escande Postamble (1) */ 440347a6abSThierry Escande static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = { 450347a6abSThierry Escande 0x00, 0x00, 0xff, 0x00, 0xff, 0x00 460347a6abSThierry Escande }; 470347a6abSThierry Escande 480347a6abSThierry Escande #define PORT100_FRAME_CHECKSUM(f) (f->data[le16_to_cpu(f->datalen)]) 490347a6abSThierry Escande #define PORT100_FRAME_POSTAMBLE(f) (f->data[le16_to_cpu(f->datalen) + 1]) 500347a6abSThierry Escande 510347a6abSThierry Escande /* start of frame */ 520347a6abSThierry Escande #define PORT100_FRAME_SOF 0x00FF 530347a6abSThierry Escande #define PORT100_FRAME_EXT 0xFFFF 540347a6abSThierry Escande #define PORT100_FRAME_ACK 0x00FF 550347a6abSThierry Escande 560347a6abSThierry Escande /* Port-100 command: in or out */ 570347a6abSThierry Escande #define PORT100_FRAME_DIRECTION(f) (f->data[0]) /* CC */ 580347a6abSThierry Escande #define PORT100_FRAME_DIR_OUT 0xD6 590347a6abSThierry Escande #define PORT100_FRAME_DIR_IN 0xD7 600347a6abSThierry Escande 610347a6abSThierry Escande /* Port-100 sub-command */ 620347a6abSThierry Escande #define PORT100_FRAME_CMD(f) (f->data[1]) /* SCC */ 630347a6abSThierry Escande 640347a6abSThierry Escande #define PORT100_CMD_GET_FIRMWARE_VERSION 0x20 650347a6abSThierry Escande #define PORT100_CMD_GET_COMMAND_TYPE 0x28 660347a6abSThierry Escande #define PORT100_CMD_SET_COMMAND_TYPE 0x2A 670347a6abSThierry Escande 689f7b57f2SThierry Escande #define PORT100_CMD_IN_SET_RF 0x00 699f7b57f2SThierry Escande #define PORT100_CMD_IN_SET_PROTOCOL 0x02 709f7b57f2SThierry Escande #define PORT100_CMD_IN_COMM_RF 0x04 719f7b57f2SThierry Escande 727227c021SThierry Escande #define PORT100_CMD_TG_SET_RF 0x40 737227c021SThierry Escande #define PORT100_CMD_TG_SET_PROTOCOL 0x42 747227c021SThierry Escande #define PORT100_CMD_TG_SET_RF_OFF 0x46 757227c021SThierry Escande #define PORT100_CMD_TG_COMM_RF 0x48 767227c021SThierry Escande 779f7b57f2SThierry Escande #define PORT100_CMD_SWITCH_RF 0x06 789f7b57f2SThierry Escande 790347a6abSThierry Escande #define PORT100_CMD_RESPONSE(cmd) (cmd + 1) 800347a6abSThierry Escande 810347a6abSThierry Escande #define PORT100_CMD_TYPE_IS_SUPPORTED(mask, cmd_type) \ 820347a6abSThierry Escande ((mask) & (0x01 << (cmd_type))) 830347a6abSThierry Escande #define PORT100_CMD_TYPE_0 0 840347a6abSThierry Escande #define PORT100_CMD_TYPE_1 1 850347a6abSThierry Escande 869f7b57f2SThierry Escande #define PORT100_CMD_STATUS_OK 0x00 879f7b57f2SThierry Escande #define PORT100_CMD_STATUS_TIMEOUT 0x80 889f7b57f2SThierry Escande 897227c021SThierry Escande #define PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK 0x01 907227c021SThierry Escande #define PORT100_MDAA_TGT_WAS_ACTIVATED_MASK 0x02 917227c021SThierry Escande 920347a6abSThierry Escande struct port100; 930347a6abSThierry Escande 940347a6abSThierry Escande typedef void (*port100_send_async_complete_t)(struct port100 *dev, void *arg, 950347a6abSThierry Escande struct sk_buff *resp); 960347a6abSThierry Escande 97a548bee9SKrzysztof Kozlowski /* 989f7b57f2SThierry Escande * Setting sets structure for in_set_rf command 999f7b57f2SThierry Escande * 1009f7b57f2SThierry Escande * @in_*_set_number: Represent the entry indexes in the port-100 RF Base Table. 1019f7b57f2SThierry Escande * This table contains multiple RF setting sets required for RF 1029f7b57f2SThierry Escande * communication. 1039f7b57f2SThierry Escande * 1049f7b57f2SThierry Escande * @in_*_comm_type: Theses fields set the communication type to be used. 1059f7b57f2SThierry Escande */ 1069f7b57f2SThierry Escande struct port100_in_rf_setting { 1079f7b57f2SThierry Escande u8 in_send_set_number; 1089f7b57f2SThierry Escande u8 in_send_comm_type; 1099f7b57f2SThierry Escande u8 in_recv_set_number; 1109f7b57f2SThierry Escande u8 in_recv_comm_type; 1119f7b57f2SThierry Escande } __packed; 1129f7b57f2SThierry Escande 1139f7b57f2SThierry Escande #define PORT100_COMM_TYPE_IN_212F 0x01 1149f7b57f2SThierry Escande #define PORT100_COMM_TYPE_IN_424F 0x02 1159f7b57f2SThierry Escande #define PORT100_COMM_TYPE_IN_106A 0x03 11609592ccfSThierry Escande #define PORT100_COMM_TYPE_IN_106B 0x07 1179f7b57f2SThierry Escande 1189f7b57f2SThierry Escande static const struct port100_in_rf_setting in_rf_settings[] = { 1199f7b57f2SThierry Escande [NFC_DIGITAL_RF_TECH_212F] = { 1209f7b57f2SThierry Escande .in_send_set_number = 1, 1219f7b57f2SThierry Escande .in_send_comm_type = PORT100_COMM_TYPE_IN_212F, 1229f7b57f2SThierry Escande .in_recv_set_number = 15, 1239f7b57f2SThierry Escande .in_recv_comm_type = PORT100_COMM_TYPE_IN_212F, 1249f7b57f2SThierry Escande }, 1259f7b57f2SThierry Escande [NFC_DIGITAL_RF_TECH_424F] = { 1269f7b57f2SThierry Escande .in_send_set_number = 1, 1279f7b57f2SThierry Escande .in_send_comm_type = PORT100_COMM_TYPE_IN_424F, 1289f7b57f2SThierry Escande .in_recv_set_number = 15, 1299f7b57f2SThierry Escande .in_recv_comm_type = PORT100_COMM_TYPE_IN_424F, 1309f7b57f2SThierry Escande }, 1319f7b57f2SThierry Escande [NFC_DIGITAL_RF_TECH_106A] = { 1329f7b57f2SThierry Escande .in_send_set_number = 2, 1339f7b57f2SThierry Escande .in_send_comm_type = PORT100_COMM_TYPE_IN_106A, 1349f7b57f2SThierry Escande .in_recv_set_number = 15, 1359f7b57f2SThierry Escande .in_recv_comm_type = PORT100_COMM_TYPE_IN_106A, 1369f7b57f2SThierry Escande }, 13709592ccfSThierry Escande [NFC_DIGITAL_RF_TECH_106B] = { 13809592ccfSThierry Escande .in_send_set_number = 3, 13909592ccfSThierry Escande .in_send_comm_type = PORT100_COMM_TYPE_IN_106B, 14009592ccfSThierry Escande .in_recv_set_number = 15, 14109592ccfSThierry Escande .in_recv_comm_type = PORT100_COMM_TYPE_IN_106B, 14209592ccfSThierry Escande }, 143d3815ea9SThierry Escande /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ 144d3815ea9SThierry Escande [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, 1459f7b57f2SThierry Escande }; 1469f7b57f2SThierry Escande 1477227c021SThierry Escande /** 148a548bee9SKrzysztof Kozlowski * struct port100_tg_rf_setting - Setting sets structure for tg_set_rf command 1497227c021SThierry Escande * 1507227c021SThierry Escande * @tg_set_number: Represents the entry index in the port-100 RF Base Table. 1517227c021SThierry Escande * This table contains multiple RF setting sets required for RF 1527227c021SThierry Escande * communication. this field is used for both send and receive 1537227c021SThierry Escande * settings. 1547227c021SThierry Escande * 1557227c021SThierry Escande * @tg_comm_type: Sets the communication type to be used to send and receive 1567227c021SThierry Escande * data. 1577227c021SThierry Escande */ 1587227c021SThierry Escande struct port100_tg_rf_setting { 1597227c021SThierry Escande u8 tg_set_number; 1607227c021SThierry Escande u8 tg_comm_type; 1617227c021SThierry Escande } __packed; 1627227c021SThierry Escande 1637227c021SThierry Escande #define PORT100_COMM_TYPE_TG_106A 0x0B 1647227c021SThierry Escande #define PORT100_COMM_TYPE_TG_212F 0x0C 1657227c021SThierry Escande #define PORT100_COMM_TYPE_TG_424F 0x0D 1667227c021SThierry Escande 1677227c021SThierry Escande static const struct port100_tg_rf_setting tg_rf_settings[] = { 1687227c021SThierry Escande [NFC_DIGITAL_RF_TECH_106A] = { 1697227c021SThierry Escande .tg_set_number = 8, 1707227c021SThierry Escande .tg_comm_type = PORT100_COMM_TYPE_TG_106A, 1717227c021SThierry Escande }, 1727227c021SThierry Escande [NFC_DIGITAL_RF_TECH_212F] = { 1737227c021SThierry Escande .tg_set_number = 8, 1747227c021SThierry Escande .tg_comm_type = PORT100_COMM_TYPE_TG_212F, 1757227c021SThierry Escande }, 1767227c021SThierry Escande [NFC_DIGITAL_RF_TECH_424F] = { 1777227c021SThierry Escande .tg_set_number = 8, 1787227c021SThierry Escande .tg_comm_type = PORT100_COMM_TYPE_TG_424F, 1797227c021SThierry Escande }, 180d3815ea9SThierry Escande /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ 181d3815ea9SThierry Escande [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, 182d3815ea9SThierry Escande 1837227c021SThierry Escande }; 1847227c021SThierry Escande 1859f7b57f2SThierry Escande #define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00 1869f7b57f2SThierry Escande #define PORT100_IN_PROT_ADD_CRC 0x01 1879f7b57f2SThierry Escande #define PORT100_IN_PROT_CHECK_CRC 0x02 1889f7b57f2SThierry Escande #define PORT100_IN_PROT_MULTI_CARD 0x03 1899f7b57f2SThierry Escande #define PORT100_IN_PROT_ADD_PARITY 0x04 1909f7b57f2SThierry Escande #define PORT100_IN_PROT_CHECK_PARITY 0x05 1919f7b57f2SThierry Escande #define PORT100_IN_PROT_BITWISE_AC_RECV_MODE 0x06 1929f7b57f2SThierry Escande #define PORT100_IN_PROT_VALID_BIT_NUMBER 0x07 1939f7b57f2SThierry Escande #define PORT100_IN_PROT_CRYPTO1 0x08 1949f7b57f2SThierry Escande #define PORT100_IN_PROT_ADD_SOF 0x09 1959f7b57f2SThierry Escande #define PORT100_IN_PROT_CHECK_SOF 0x0A 1969f7b57f2SThierry Escande #define PORT100_IN_PROT_ADD_EOF 0x0B 1979f7b57f2SThierry Escande #define PORT100_IN_PROT_CHECK_EOF 0x0C 1989f7b57f2SThierry Escande #define PORT100_IN_PROT_DEAF_TIME 0x0E 1999f7b57f2SThierry Escande #define PORT100_IN_PROT_CRM 0x0F 2009f7b57f2SThierry Escande #define PORT100_IN_PROT_CRM_MIN_LEN 0x10 2019f7b57f2SThierry Escande #define PORT100_IN_PROT_T1_TAG_FRAME 0x11 2029f7b57f2SThierry Escande #define PORT100_IN_PROT_RFCA 0x12 2039f7b57f2SThierry Escande #define PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR 0x13 2049f7b57f2SThierry Escande #define PORT100_IN_PROT_END 0x14 2059f7b57f2SThierry Escande 2069f7b57f2SThierry Escande #define PORT100_IN_MAX_NUM_PROTOCOLS 19 2079f7b57f2SThierry Escande 2087227c021SThierry Escande #define PORT100_TG_PROT_TU 0x00 2097227c021SThierry Escande #define PORT100_TG_PROT_RF_OFF 0x01 2107227c021SThierry Escande #define PORT100_TG_PROT_CRM 0x02 2117227c021SThierry Escande #define PORT100_TG_PROT_END 0x03 2127227c021SThierry Escande 2137227c021SThierry Escande #define PORT100_TG_MAX_NUM_PROTOCOLS 3 2147227c021SThierry Escande 2159f7b57f2SThierry Escande struct port100_protocol { 2169f7b57f2SThierry Escande u8 number; 2179f7b57f2SThierry Escande u8 value; 2189f7b57f2SThierry Escande } __packed; 2199f7b57f2SThierry Escande 220c65e7025SKrzysztof Kozlowski static const struct port100_protocol 2219f7b57f2SThierry Escande in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { 2229f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { 2239f7b57f2SThierry Escande { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, 2249f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_CRC, 0 }, 2259f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_CRC, 0 }, 2269f7b57f2SThierry Escande { PORT100_IN_PROT_MULTI_CARD, 0 }, 2279f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_PARITY, 0 }, 2289f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_PARITY, 1 }, 2299f7b57f2SThierry Escande { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, 2309f7b57f2SThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 7 }, 2319f7b57f2SThierry Escande { PORT100_IN_PROT_CRYPTO1, 0 }, 2329f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_SOF, 0 }, 2339f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_SOF, 0 }, 2349f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_EOF, 0 }, 2359f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_EOF, 0 }, 2369f7b57f2SThierry Escande { PORT100_IN_PROT_DEAF_TIME, 4 }, 2379f7b57f2SThierry Escande { PORT100_IN_PROT_CRM, 0 }, 2389f7b57f2SThierry Escande { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, 2399f7b57f2SThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, 2409f7b57f2SThierry Escande { PORT100_IN_PROT_RFCA, 0 }, 2419f7b57f2SThierry Escande { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, 2429f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 2439f7b57f2SThierry Escande }, 2449f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { 2459f7b57f2SThierry Escande { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, 2469f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_CRC, 0 }, 2479f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_CRC, 0 }, 2489f7b57f2SThierry Escande { PORT100_IN_PROT_MULTI_CARD, 0 }, 2499f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_PARITY, 1 }, 2509f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_PARITY, 1 }, 2519f7b57f2SThierry Escande { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, 2529f7b57f2SThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, 2539f7b57f2SThierry Escande { PORT100_IN_PROT_CRYPTO1, 0 }, 2549f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_SOF, 0 }, 2559f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_SOF, 0 }, 2569f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_EOF, 0 }, 2579f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_EOF, 0 }, 2589f7b57f2SThierry Escande { PORT100_IN_PROT_DEAF_TIME, 4 }, 2599f7b57f2SThierry Escande { PORT100_IN_PROT_CRM, 0 }, 2609f7b57f2SThierry Escande { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, 2619f7b57f2SThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, 2629f7b57f2SThierry Escande { PORT100_IN_PROT_RFCA, 0 }, 2639f7b57f2SThierry Escande { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, 2649f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 2659f7b57f2SThierry Escande }, 2669f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { 2679f7b57f2SThierry Escande { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, 2689f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_CRC, 1 }, 2699f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_CRC, 1 }, 2709f7b57f2SThierry Escande { PORT100_IN_PROT_MULTI_CARD, 0 }, 2719f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_PARITY, 1 }, 2729f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_PARITY, 1 }, 2739f7b57f2SThierry Escande { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, 2749f7b57f2SThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, 2759f7b57f2SThierry Escande { PORT100_IN_PROT_CRYPTO1, 0 }, 2769f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_SOF, 0 }, 2779f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_SOF, 0 }, 2789f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_EOF, 0 }, 2799f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_EOF, 0 }, 2809f7b57f2SThierry Escande { PORT100_IN_PROT_DEAF_TIME, 4 }, 2819f7b57f2SThierry Escande { PORT100_IN_PROT_CRM, 0 }, 2829f7b57f2SThierry Escande { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, 2839f7b57f2SThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, 2849f7b57f2SThierry Escande { PORT100_IN_PROT_RFCA, 0 }, 2859f7b57f2SThierry Escande { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, 2869f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 2879f7b57f2SThierry Escande }, 2889f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_T1T] = { 2899f7b57f2SThierry Escande /* nfc_digital_framing_nfca_short */ 2909f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_CRC, 2 }, 2919f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_CRC, 2 }, 2929f7b57f2SThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, 2939f7b57f2SThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 2 }, 2949f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 2959f7b57f2SThierry Escande }, 2969f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_T2T] = { 2979f7b57f2SThierry Escande /* nfc_digital_framing_nfca_standard */ 2989f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_CRC, 1 }, 2999f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_CRC, 0 }, 3009f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3019f7b57f2SThierry Escande }, 3022a26f9a2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_T4T] = { 3032a26f9a2SThierry Escande /* nfc_digital_framing_nfca_standard_with_crc_a */ 3042a26f9a2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3052a26f9a2SThierry Escande }, 3069f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { 3079f7b57f2SThierry Escande /* nfc_digital_framing_nfca_standard */ 3089f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3099f7b57f2SThierry Escande }, 3109f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCF] = { 3119f7b57f2SThierry Escande { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, 3129f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_CRC, 1 }, 3139f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_CRC, 1 }, 3149f7b57f2SThierry Escande { PORT100_IN_PROT_MULTI_CARD, 0 }, 3159f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_PARITY, 0 }, 3169f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_PARITY, 0 }, 3179f7b57f2SThierry Escande { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, 3189f7b57f2SThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, 3199f7b57f2SThierry Escande { PORT100_IN_PROT_CRYPTO1, 0 }, 3209f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_SOF, 0 }, 3219f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_SOF, 0 }, 3229f7b57f2SThierry Escande { PORT100_IN_PROT_ADD_EOF, 0 }, 3239f7b57f2SThierry Escande { PORT100_IN_PROT_CHECK_EOF, 0 }, 3249f7b57f2SThierry Escande { PORT100_IN_PROT_DEAF_TIME, 4 }, 3259f7b57f2SThierry Escande { PORT100_IN_PROT_CRM, 0 }, 3269f7b57f2SThierry Escande { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, 3279f7b57f2SThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, 3289f7b57f2SThierry Escande { PORT100_IN_PROT_RFCA, 0 }, 3299f7b57f2SThierry Escande { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, 3309f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3319f7b57f2SThierry Escande }, 3329f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCF_T3T] = { 3339f7b57f2SThierry Escande /* nfc_digital_framing_nfcf */ 3349f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3359f7b57f2SThierry Escande }, 3369f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { 3379f7b57f2SThierry Escande /* nfc_digital_framing_nfcf */ 338a81ba50aSThierry Escande { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, 339a81ba50aSThierry Escande { PORT100_IN_PROT_ADD_CRC, 1 }, 340a81ba50aSThierry Escande { PORT100_IN_PROT_CHECK_CRC, 1 }, 341a81ba50aSThierry Escande { PORT100_IN_PROT_MULTI_CARD, 0 }, 342a81ba50aSThierry Escande { PORT100_IN_PROT_ADD_PARITY, 0 }, 343a81ba50aSThierry Escande { PORT100_IN_PROT_CHECK_PARITY, 0 }, 344a81ba50aSThierry Escande { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, 345a81ba50aSThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, 346a81ba50aSThierry Escande { PORT100_IN_PROT_CRYPTO1, 0 }, 347a81ba50aSThierry Escande { PORT100_IN_PROT_ADD_SOF, 0 }, 348a81ba50aSThierry Escande { PORT100_IN_PROT_CHECK_SOF, 0 }, 349a81ba50aSThierry Escande { PORT100_IN_PROT_ADD_EOF, 0 }, 350a81ba50aSThierry Escande { PORT100_IN_PROT_CHECK_EOF, 0 }, 351a81ba50aSThierry Escande { PORT100_IN_PROT_DEAF_TIME, 4 }, 352a81ba50aSThierry Escande { PORT100_IN_PROT_CRM, 0 }, 353a81ba50aSThierry Escande { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, 354a81ba50aSThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, 355a81ba50aSThierry Escande { PORT100_IN_PROT_RFCA, 0 }, 356a81ba50aSThierry Escande { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, 3579f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3589f7b57f2SThierry Escande }, 3599f7b57f2SThierry Escande [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { 3609f7b57f2SThierry Escande { PORT100_IN_PROT_END, 0 }, 3619f7b57f2SThierry Escande }, 36209592ccfSThierry Escande [NFC_DIGITAL_FRAMING_NFCB] = { 36309592ccfSThierry Escande { PORT100_IN_PROT_INITIAL_GUARD_TIME, 20 }, 36409592ccfSThierry Escande { PORT100_IN_PROT_ADD_CRC, 1 }, 36509592ccfSThierry Escande { PORT100_IN_PROT_CHECK_CRC, 1 }, 36609592ccfSThierry Escande { PORT100_IN_PROT_MULTI_CARD, 0 }, 36709592ccfSThierry Escande { PORT100_IN_PROT_ADD_PARITY, 0 }, 36809592ccfSThierry Escande { PORT100_IN_PROT_CHECK_PARITY, 0 }, 36909592ccfSThierry Escande { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, 37009592ccfSThierry Escande { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, 37109592ccfSThierry Escande { PORT100_IN_PROT_CRYPTO1, 0 }, 37209592ccfSThierry Escande { PORT100_IN_PROT_ADD_SOF, 1 }, 37309592ccfSThierry Escande { PORT100_IN_PROT_CHECK_SOF, 1 }, 37409592ccfSThierry Escande { PORT100_IN_PROT_ADD_EOF, 1 }, 37509592ccfSThierry Escande { PORT100_IN_PROT_CHECK_EOF, 1 }, 37609592ccfSThierry Escande { PORT100_IN_PROT_DEAF_TIME, 4 }, 37709592ccfSThierry Escande { PORT100_IN_PROT_CRM, 0 }, 37809592ccfSThierry Escande { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, 37909592ccfSThierry Escande { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, 38009592ccfSThierry Escande { PORT100_IN_PROT_RFCA, 0 }, 38109592ccfSThierry Escande { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, 38209592ccfSThierry Escande { PORT100_IN_PROT_END, 0 }, 38309592ccfSThierry Escande }, 38409592ccfSThierry Escande [NFC_DIGITAL_FRAMING_NFCB_T4T] = { 38509592ccfSThierry Escande /* nfc_digital_framing_nfcb */ 38609592ccfSThierry Escande { PORT100_IN_PROT_END, 0 }, 38709592ccfSThierry Escande }, 388d3815ea9SThierry Escande /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ 389d3815ea9SThierry Escande [NFC_DIGITAL_FRAMING_LAST] = { 390d3815ea9SThierry Escande { PORT100_IN_PROT_END, 0 }, 391d3815ea9SThierry Escande }, 3929f7b57f2SThierry Escande }; 3939f7b57f2SThierry Escande 394c65e7025SKrzysztof Kozlowski static const struct port100_protocol 3957227c021SThierry Escande tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = { 3967227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { 3977227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 3987227c021SThierry Escande }, 3997227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { 4007227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4017227c021SThierry Escande }, 4027227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { 4037227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4047227c021SThierry Escande }, 4057227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_T1T] = { 4067227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4077227c021SThierry Escande }, 4087227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_T2T] = { 4097227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4107227c021SThierry Escande }, 4117227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { 4127227c021SThierry Escande { PORT100_TG_PROT_TU, 1 }, 4137227c021SThierry Escande { PORT100_TG_PROT_RF_OFF, 0 }, 4147227c021SThierry Escande { PORT100_TG_PROT_CRM, 7 }, 4157227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4167227c021SThierry Escande }, 4177227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCF] = { 4187227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4197227c021SThierry Escande }, 4207227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCF_T3T] = { 4217227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4227227c021SThierry Escande }, 4237227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { 4247227c021SThierry Escande { PORT100_TG_PROT_TU, 1 }, 4257227c021SThierry Escande { PORT100_TG_PROT_RF_OFF, 0 }, 4267227c021SThierry Escande { PORT100_TG_PROT_CRM, 7 }, 4277227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4287227c021SThierry Escande }, 4297227c021SThierry Escande [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { 4307227c021SThierry Escande { PORT100_TG_PROT_RF_OFF, 1 }, 4317227c021SThierry Escande { PORT100_TG_PROT_END, 0 }, 4327227c021SThierry Escande }, 433d3815ea9SThierry Escande /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ 434d3815ea9SThierry Escande [NFC_DIGITAL_FRAMING_LAST] = { 435d3815ea9SThierry Escande { PORT100_TG_PROT_END, 0 }, 436d3815ea9SThierry Escande }, 4377227c021SThierry Escande }; 4387227c021SThierry Escande 439562d4d59SThierry Escande struct port100 { 440562d4d59SThierry Escande struct nfc_digital_dev *nfc_digital_dev; 441562d4d59SThierry Escande 442562d4d59SThierry Escande int skb_headroom; 443562d4d59SThierry Escande int skb_tailroom; 444562d4d59SThierry Escande 445562d4d59SThierry Escande struct usb_device *udev; 446562d4d59SThierry Escande struct usb_interface *interface; 4470347a6abSThierry Escande 4480347a6abSThierry Escande struct urb *out_urb; 4490347a6abSThierry Escande struct urb *in_urb; 4500347a6abSThierry Escande 451b74584c1SThierry Escande /* This mutex protects the out_urb and avoids to submit a new command 452b74584c1SThierry Escande * through port100_send_frame_async() while the previous one is being 453b74584c1SThierry Escande * canceled through port100_abort_cmd(). 454b74584c1SThierry Escande */ 455b74584c1SThierry Escande struct mutex out_urb_lock; 456b74584c1SThierry Escande 4570347a6abSThierry Escande struct work_struct cmd_complete_work; 4580347a6abSThierry Escande 4590347a6abSThierry Escande u8 cmd_type; 4600347a6abSThierry Escande 4610347a6abSThierry Escande /* The digital stack serializes commands to be sent. There is no need 4620347a6abSThierry Escande * for any queuing/locking mechanism at driver level. 4630347a6abSThierry Escande */ 4640347a6abSThierry Escande struct port100_cmd *cmd; 465b74584c1SThierry Escande 466b74584c1SThierry Escande bool cmd_cancel; 467a52bd7d2SThierry Escande struct completion cmd_cancel_done; 468562d4d59SThierry Escande }; 469562d4d59SThierry Escande 4700347a6abSThierry Escande struct port100_cmd { 4710347a6abSThierry Escande u8 code; 4720347a6abSThierry Escande int status; 4730347a6abSThierry Escande struct sk_buff *req; 4740347a6abSThierry Escande struct sk_buff *resp; 4750347a6abSThierry Escande int resp_len; 4760347a6abSThierry Escande port100_send_async_complete_t complete_cb; 4770347a6abSThierry Escande void *complete_cb_context; 4780347a6abSThierry Escande }; 4790347a6abSThierry Escande 4800347a6abSThierry Escande struct port100_frame { 4810347a6abSThierry Escande u8 preamble; 4820347a6abSThierry Escande __be16 start_frame; 4830347a6abSThierry Escande __be16 extended_frame; 4840347a6abSThierry Escande __le16 datalen; 4850347a6abSThierry Escande u8 datalen_checksum; 4860347a6abSThierry Escande u8 data[]; 4870347a6abSThierry Escande } __packed; 4880347a6abSThierry Escande 4890347a6abSThierry Escande struct port100_ack_frame { 4900347a6abSThierry Escande u8 preamble; 4910347a6abSThierry Escande __be16 start_frame; 4920347a6abSThierry Escande __be16 ack_frame; 4930347a6abSThierry Escande u8 postambule; 4940347a6abSThierry Escande } __packed; 4950347a6abSThierry Escande 4960347a6abSThierry Escande struct port100_cb_arg { 4970347a6abSThierry Escande nfc_digital_cmd_complete_t complete_cb; 4980347a6abSThierry Escande void *complete_arg; 4990347a6abSThierry Escande u8 mdaa; 5000347a6abSThierry Escande }; 5010347a6abSThierry Escande 5020347a6abSThierry Escande struct port100_tg_comm_rf_cmd { 5030347a6abSThierry Escande __le16 guard_time; 5040347a6abSThierry Escande __le16 send_timeout; 5050347a6abSThierry Escande u8 mdaa; 5060347a6abSThierry Escande u8 nfca_param[6]; 5070347a6abSThierry Escande u8 nfcf_param[18]; 5080347a6abSThierry Escande u8 mf_halted; 5090347a6abSThierry Escande u8 arae_flag; 5100347a6abSThierry Escande __le16 recv_timeout; 5110347a6abSThierry Escande u8 data[]; 5120347a6abSThierry Escande } __packed; 5130347a6abSThierry Escande 5147227c021SThierry Escande struct port100_tg_comm_rf_res { 5157227c021SThierry Escande u8 comm_type; 5167227c021SThierry Escande u8 ar_status; 5177227c021SThierry Escande u8 target_activated; 5187227c021SThierry Escande __le32 status; 5197227c021SThierry Escande u8 data[]; 5207227c021SThierry Escande } __packed; 5217227c021SThierry Escande 5220347a6abSThierry Escande /* The rule: value + checksum = 0 */ 5230347a6abSThierry Escande static inline u8 port100_checksum(u16 value) 5240347a6abSThierry Escande { 5250347a6abSThierry Escande return ~(((u8 *)&value)[0] + ((u8 *)&value)[1]) + 1; 5260347a6abSThierry Escande } 5270347a6abSThierry Escande 5280347a6abSThierry Escande /* The rule: sum(data elements) + checksum = 0 */ 529*9a4af01cSKrzysztof Kozlowski static u8 port100_data_checksum(const u8 *data, int datalen) 5300347a6abSThierry Escande { 5310347a6abSThierry Escande u8 sum = 0; 5320347a6abSThierry Escande int i; 5330347a6abSThierry Escande 5340347a6abSThierry Escande for (i = 0; i < datalen; i++) 5350347a6abSThierry Escande sum += data[i]; 5360347a6abSThierry Escande 5370347a6abSThierry Escande return port100_checksum(sum); 5380347a6abSThierry Escande } 5390347a6abSThierry Escande 5400347a6abSThierry Escande static void port100_tx_frame_init(void *_frame, u8 cmd_code) 5410347a6abSThierry Escande { 5420347a6abSThierry Escande struct port100_frame *frame = _frame; 5430347a6abSThierry Escande 5440347a6abSThierry Escande frame->preamble = 0; 5450347a6abSThierry Escande frame->start_frame = cpu_to_be16(PORT100_FRAME_SOF); 5460347a6abSThierry Escande frame->extended_frame = cpu_to_be16(PORT100_FRAME_EXT); 5470347a6abSThierry Escande PORT100_FRAME_DIRECTION(frame) = PORT100_FRAME_DIR_OUT; 5480347a6abSThierry Escande PORT100_FRAME_CMD(frame) = cmd_code; 5490347a6abSThierry Escande frame->datalen = cpu_to_le16(2); 5500347a6abSThierry Escande } 5510347a6abSThierry Escande 5520347a6abSThierry Escande static void port100_tx_frame_finish(void *_frame) 5530347a6abSThierry Escande { 5540347a6abSThierry Escande struct port100_frame *frame = _frame; 5550347a6abSThierry Escande 5560347a6abSThierry Escande frame->datalen_checksum = port100_checksum(le16_to_cpu(frame->datalen)); 5570347a6abSThierry Escande 5580347a6abSThierry Escande PORT100_FRAME_CHECKSUM(frame) = 5590347a6abSThierry Escande port100_data_checksum(frame->data, le16_to_cpu(frame->datalen)); 5600347a6abSThierry Escande 5610347a6abSThierry Escande PORT100_FRAME_POSTAMBLE(frame) = 0; 5620347a6abSThierry Escande } 5630347a6abSThierry Escande 5640347a6abSThierry Escande static void port100_tx_update_payload_len(void *_frame, int len) 5650347a6abSThierry Escande { 5660347a6abSThierry Escande struct port100_frame *frame = _frame; 5670347a6abSThierry Escande 568718eae27SMao Wenan le16_add_cpu(&frame->datalen, len); 5690347a6abSThierry Escande } 5700347a6abSThierry Escande 571*9a4af01cSKrzysztof Kozlowski static bool port100_rx_frame_is_valid(const void *_frame) 5720347a6abSThierry Escande { 5730347a6abSThierry Escande u8 checksum; 574*9a4af01cSKrzysztof Kozlowski const struct port100_frame *frame = _frame; 5750347a6abSThierry Escande 5760347a6abSThierry Escande if (frame->start_frame != cpu_to_be16(PORT100_FRAME_SOF) || 5770347a6abSThierry Escande frame->extended_frame != cpu_to_be16(PORT100_FRAME_EXT)) 5780347a6abSThierry Escande return false; 5790347a6abSThierry Escande 5800347a6abSThierry Escande checksum = port100_checksum(le16_to_cpu(frame->datalen)); 5810347a6abSThierry Escande if (checksum != frame->datalen_checksum) 5820347a6abSThierry Escande return false; 5830347a6abSThierry Escande 5840347a6abSThierry Escande checksum = port100_data_checksum(frame->data, 5850347a6abSThierry Escande le16_to_cpu(frame->datalen)); 5860347a6abSThierry Escande if (checksum != PORT100_FRAME_CHECKSUM(frame)) 5870347a6abSThierry Escande return false; 5880347a6abSThierry Escande 5890347a6abSThierry Escande return true; 5900347a6abSThierry Escande } 5910347a6abSThierry Escande 592*9a4af01cSKrzysztof Kozlowski static bool port100_rx_frame_is_ack(const struct port100_ack_frame *frame) 5930347a6abSThierry Escande { 5940347a6abSThierry Escande return (frame->start_frame == cpu_to_be16(PORT100_FRAME_SOF) && 5950347a6abSThierry Escande frame->ack_frame == cpu_to_be16(PORT100_FRAME_ACK)); 5960347a6abSThierry Escande } 5970347a6abSThierry Escande 598*9a4af01cSKrzysztof Kozlowski static inline int port100_rx_frame_size(const void *frame) 5990347a6abSThierry Escande { 600*9a4af01cSKrzysztof Kozlowski const struct port100_frame *f = frame; 6010347a6abSThierry Escande 6020347a6abSThierry Escande return sizeof(struct port100_frame) + le16_to_cpu(f->datalen) + 6030347a6abSThierry Escande PORT100_FRAME_TAIL_LEN; 6040347a6abSThierry Escande } 6050347a6abSThierry Escande 606*9a4af01cSKrzysztof Kozlowski static bool port100_rx_frame_is_cmd_response(const struct port100 *dev, 607*9a4af01cSKrzysztof Kozlowski const void *frame) 6080347a6abSThierry Escande { 609*9a4af01cSKrzysztof Kozlowski const struct port100_frame *f = frame; 6100347a6abSThierry Escande 6110347a6abSThierry Escande return (PORT100_FRAME_CMD(f) == PORT100_CMD_RESPONSE(dev->cmd->code)); 6120347a6abSThierry Escande } 6130347a6abSThierry Escande 6140347a6abSThierry Escande static void port100_recv_response(struct urb *urb) 6150347a6abSThierry Escande { 6160347a6abSThierry Escande struct port100 *dev = urb->context; 6170347a6abSThierry Escande struct port100_cmd *cmd = dev->cmd; 6180347a6abSThierry Escande u8 *in_frame; 6190347a6abSThierry Escande 6200347a6abSThierry Escande cmd->status = urb->status; 6210347a6abSThierry Escande 6220347a6abSThierry Escande switch (urb->status) { 6230347a6abSThierry Escande case 0: 6240347a6abSThierry Escande break; /* success */ 6250347a6abSThierry Escande case -ECONNRESET: 6260347a6abSThierry Escande case -ENOENT: 6270347a6abSThierry Escande nfc_err(&dev->interface->dev, 6283590ebc0SJoe Perches "The urb has been canceled (status %d)\n", urb->status); 6290347a6abSThierry Escande goto sched_wq; 6300347a6abSThierry Escande case -ESHUTDOWN: 6310347a6abSThierry Escande default: 6323590ebc0SJoe Perches nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", 6330347a6abSThierry Escande urb->status); 6340347a6abSThierry Escande goto sched_wq; 6350347a6abSThierry Escande } 6360347a6abSThierry Escande 6370347a6abSThierry Escande in_frame = dev->in_urb->transfer_buffer; 6380347a6abSThierry Escande 6390347a6abSThierry Escande if (!port100_rx_frame_is_valid(in_frame)) { 6403590ebc0SJoe Perches nfc_err(&dev->interface->dev, "Received an invalid frame\n"); 6410347a6abSThierry Escande cmd->status = -EIO; 6420347a6abSThierry Escande goto sched_wq; 6430347a6abSThierry Escande } 6440347a6abSThierry Escande 6450347a6abSThierry Escande print_hex_dump_debug("PORT100 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, 6460347a6abSThierry Escande port100_rx_frame_size(in_frame), false); 6470347a6abSThierry Escande 6480347a6abSThierry Escande if (!port100_rx_frame_is_cmd_response(dev, in_frame)) { 6490347a6abSThierry Escande nfc_err(&dev->interface->dev, 6503590ebc0SJoe Perches "It's not the response to the last command\n"); 6510347a6abSThierry Escande cmd->status = -EIO; 6520347a6abSThierry Escande goto sched_wq; 6530347a6abSThierry Escande } 6540347a6abSThierry Escande 6550347a6abSThierry Escande sched_wq: 6560347a6abSThierry Escande schedule_work(&dev->cmd_complete_work); 6570347a6abSThierry Escande } 6580347a6abSThierry Escande 659*9a4af01cSKrzysztof Kozlowski static int port100_submit_urb_for_response(const struct port100 *dev, 660*9a4af01cSKrzysztof Kozlowski gfp_t flags) 6610347a6abSThierry Escande { 6620347a6abSThierry Escande dev->in_urb->complete = port100_recv_response; 6630347a6abSThierry Escande 6640347a6abSThierry Escande return usb_submit_urb(dev->in_urb, flags); 6650347a6abSThierry Escande } 6660347a6abSThierry Escande 6670347a6abSThierry Escande static void port100_recv_ack(struct urb *urb) 6680347a6abSThierry Escande { 6690347a6abSThierry Escande struct port100 *dev = urb->context; 6700347a6abSThierry Escande struct port100_cmd *cmd = dev->cmd; 671*9a4af01cSKrzysztof Kozlowski const struct port100_ack_frame *in_frame; 6720347a6abSThierry Escande int rc; 6730347a6abSThierry Escande 6740347a6abSThierry Escande cmd->status = urb->status; 6750347a6abSThierry Escande 6760347a6abSThierry Escande switch (urb->status) { 6770347a6abSThierry Escande case 0: 6780347a6abSThierry Escande break; /* success */ 6790347a6abSThierry Escande case -ECONNRESET: 6800347a6abSThierry Escande case -ENOENT: 6810347a6abSThierry Escande nfc_err(&dev->interface->dev, 6823590ebc0SJoe Perches "The urb has been stopped (status %d)\n", urb->status); 6830347a6abSThierry Escande goto sched_wq; 6840347a6abSThierry Escande case -ESHUTDOWN: 6850347a6abSThierry Escande default: 6863590ebc0SJoe Perches nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", 6870347a6abSThierry Escande urb->status); 6880347a6abSThierry Escande goto sched_wq; 6890347a6abSThierry Escande } 6900347a6abSThierry Escande 6910347a6abSThierry Escande in_frame = dev->in_urb->transfer_buffer; 6920347a6abSThierry Escande 6930347a6abSThierry Escande if (!port100_rx_frame_is_ack(in_frame)) { 6943590ebc0SJoe Perches nfc_err(&dev->interface->dev, "Received an invalid ack\n"); 6950347a6abSThierry Escande cmd->status = -EIO; 6960347a6abSThierry Escande goto sched_wq; 6970347a6abSThierry Escande } 6980347a6abSThierry Escande 6990347a6abSThierry Escande rc = port100_submit_urb_for_response(dev, GFP_ATOMIC); 7000347a6abSThierry Escande if (rc) { 7010347a6abSThierry Escande nfc_err(&dev->interface->dev, 7023590ebc0SJoe Perches "usb_submit_urb failed with result %d\n", rc); 7030347a6abSThierry Escande cmd->status = rc; 7040347a6abSThierry Escande goto sched_wq; 7050347a6abSThierry Escande } 7060347a6abSThierry Escande 7070347a6abSThierry Escande return; 7080347a6abSThierry Escande 7090347a6abSThierry Escande sched_wq: 7100347a6abSThierry Escande schedule_work(&dev->cmd_complete_work); 7110347a6abSThierry Escande } 7120347a6abSThierry Escande 713*9a4af01cSKrzysztof Kozlowski static int port100_submit_urb_for_ack(const struct port100 *dev, gfp_t flags) 7140347a6abSThierry Escande { 7150347a6abSThierry Escande dev->in_urb->complete = port100_recv_ack; 7160347a6abSThierry Escande 7170347a6abSThierry Escande return usb_submit_urb(dev->in_urb, flags); 7180347a6abSThierry Escande } 7190347a6abSThierry Escande 7200347a6abSThierry Escande static int port100_send_ack(struct port100 *dev) 7210347a6abSThierry Escande { 72224971281SOGAWA Hirofumi int rc = 0; 7230347a6abSThierry Escande 724b74584c1SThierry Escande mutex_lock(&dev->out_urb_lock); 725b74584c1SThierry Escande 72624971281SOGAWA Hirofumi /* 72724971281SOGAWA Hirofumi * If prior cancel is in-flight (dev->cmd_cancel == true), we 72824971281SOGAWA Hirofumi * can skip to send cancel. Then this will wait the prior 72924971281SOGAWA Hirofumi * cancel, or merged into the next cancel rarely if next 73024971281SOGAWA Hirofumi * cancel was started before waiting done. In any case, this 73124971281SOGAWA Hirofumi * will be waked up soon or later. 73224971281SOGAWA Hirofumi */ 73324971281SOGAWA Hirofumi if (!dev->cmd_cancel) { 73424971281SOGAWA Hirofumi reinit_completion(&dev->cmd_cancel_done); 735a52bd7d2SThierry Escande 736b74584c1SThierry Escande usb_kill_urb(dev->out_urb); 737b74584c1SThierry Escande 7380347a6abSThierry Escande dev->out_urb->transfer_buffer = ack_frame; 7390347a6abSThierry Escande dev->out_urb->transfer_buffer_length = sizeof(ack_frame); 7400347a6abSThierry Escande rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); 7410347a6abSThierry Escande 74224971281SOGAWA Hirofumi /* 74324971281SOGAWA Hirofumi * Set the cmd_cancel flag only if the URB has been 74424971281SOGAWA Hirofumi * successfully submitted. It will be reset by the out 74524971281SOGAWA Hirofumi * URB completion callback port100_send_complete(). 746b74584c1SThierry Escande */ 747b74584c1SThierry Escande dev->cmd_cancel = !rc; 74824971281SOGAWA Hirofumi } 749b74584c1SThierry Escande 750b74584c1SThierry Escande mutex_unlock(&dev->out_urb_lock); 751b74584c1SThierry Escande 752a52bd7d2SThierry Escande if (!rc) 753a52bd7d2SThierry Escande wait_for_completion(&dev->cmd_cancel_done); 754a52bd7d2SThierry Escande 7550347a6abSThierry Escande return rc; 7560347a6abSThierry Escande } 7570347a6abSThierry Escande 758*9a4af01cSKrzysztof Kozlowski static int port100_send_frame_async(struct port100 *dev, 759*9a4af01cSKrzysztof Kozlowski const struct sk_buff *out, 760*9a4af01cSKrzysztof Kozlowski const struct sk_buff *in, int in_len) 7610347a6abSThierry Escande { 7620347a6abSThierry Escande int rc; 7630347a6abSThierry Escande 764b74584c1SThierry Escande mutex_lock(&dev->out_urb_lock); 765b74584c1SThierry Escande 766b74584c1SThierry Escande /* A command cancel frame as been sent through dev->out_urb. Don't try 767b74584c1SThierry Escande * to submit a new one. 768b74584c1SThierry Escande */ 769b74584c1SThierry Escande if (dev->cmd_cancel) { 770b74584c1SThierry Escande rc = -EAGAIN; 771b74584c1SThierry Escande goto exit; 772b74584c1SThierry Escande } 773b74584c1SThierry Escande 7740347a6abSThierry Escande dev->out_urb->transfer_buffer = out->data; 7750347a6abSThierry Escande dev->out_urb->transfer_buffer_length = out->len; 7760347a6abSThierry Escande 7770347a6abSThierry Escande dev->in_urb->transfer_buffer = in->data; 7780347a6abSThierry Escande dev->in_urb->transfer_buffer_length = in_len; 7790347a6abSThierry Escande 7800347a6abSThierry Escande print_hex_dump_debug("PORT100 TX: ", DUMP_PREFIX_NONE, 16, 1, 7810347a6abSThierry Escande out->data, out->len, false); 7820347a6abSThierry Escande 7830347a6abSThierry Escande rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); 7840347a6abSThierry Escande if (rc) 785b74584c1SThierry Escande goto exit; 7860347a6abSThierry Escande 7870347a6abSThierry Escande rc = port100_submit_urb_for_ack(dev, GFP_KERNEL); 7880347a6abSThierry Escande if (rc) 7895f9f0b11SOliver Neukum usb_kill_urb(dev->out_urb); 790b74584c1SThierry Escande 791b74584c1SThierry Escande exit: 792b74584c1SThierry Escande mutex_unlock(&dev->out_urb_lock); 793b74584c1SThierry Escande 7940347a6abSThierry Escande return rc; 7950347a6abSThierry Escande } 7960347a6abSThierry Escande 7970347a6abSThierry Escande static void port100_build_cmd_frame(struct port100 *dev, u8 cmd_code, 7980347a6abSThierry Escande struct sk_buff *skb) 7990347a6abSThierry Escande { 8000347a6abSThierry Escande /* payload is already there, just update datalen */ 8010347a6abSThierry Escande int payload_len = skb->len; 8020347a6abSThierry Escande 8030347a6abSThierry Escande skb_push(skb, PORT100_FRAME_HEADER_LEN); 8040347a6abSThierry Escande skb_put(skb, PORT100_FRAME_TAIL_LEN); 8050347a6abSThierry Escande 8060347a6abSThierry Escande port100_tx_frame_init(skb->data, cmd_code); 8070347a6abSThierry Escande port100_tx_update_payload_len(skb->data, payload_len); 8080347a6abSThierry Escande port100_tx_frame_finish(skb->data); 8090347a6abSThierry Escande } 8100347a6abSThierry Escande 8110347a6abSThierry Escande static void port100_send_async_complete(struct port100 *dev) 8120347a6abSThierry Escande { 8130347a6abSThierry Escande struct port100_cmd *cmd = dev->cmd; 8140347a6abSThierry Escande int status = cmd->status; 8150347a6abSThierry Escande 8160347a6abSThierry Escande struct sk_buff *req = cmd->req; 8170347a6abSThierry Escande struct sk_buff *resp = cmd->resp; 8180347a6abSThierry Escande 8190347a6abSThierry Escande dev_kfree_skb(req); 8200347a6abSThierry Escande 8210347a6abSThierry Escande dev->cmd = NULL; 8220347a6abSThierry Escande 8230347a6abSThierry Escande if (status < 0) { 8240347a6abSThierry Escande cmd->complete_cb(dev, cmd->complete_cb_context, 8250347a6abSThierry Escande ERR_PTR(status)); 8260347a6abSThierry Escande dev_kfree_skb(resp); 8270347a6abSThierry Escande goto done; 8280347a6abSThierry Escande } 8290347a6abSThierry Escande 8300347a6abSThierry Escande skb_put(resp, port100_rx_frame_size(resp->data)); 8310347a6abSThierry Escande skb_pull(resp, PORT100_FRAME_HEADER_LEN); 8320347a6abSThierry Escande skb_trim(resp, resp->len - PORT100_FRAME_TAIL_LEN); 8330347a6abSThierry Escande 8340347a6abSThierry Escande cmd->complete_cb(dev, cmd->complete_cb_context, resp); 8350347a6abSThierry Escande 8360347a6abSThierry Escande done: 8370347a6abSThierry Escande kfree(cmd); 8380347a6abSThierry Escande } 8390347a6abSThierry Escande 8400347a6abSThierry Escande static int port100_send_cmd_async(struct port100 *dev, u8 cmd_code, 8410347a6abSThierry Escande struct sk_buff *req, 8420347a6abSThierry Escande port100_send_async_complete_t complete_cb, 8430347a6abSThierry Escande void *complete_cb_context) 8440347a6abSThierry Escande { 8450347a6abSThierry Escande struct port100_cmd *cmd; 8460347a6abSThierry Escande struct sk_buff *resp; 8470347a6abSThierry Escande int rc; 8480347a6abSThierry Escande int resp_len = PORT100_FRAME_HEADER_LEN + 8490347a6abSThierry Escande PORT100_FRAME_MAX_PAYLOAD_LEN + 8500347a6abSThierry Escande PORT100_FRAME_TAIL_LEN; 8510347a6abSThierry Escande 852e3e02588SThierry Escande if (dev->cmd) { 853e3e02588SThierry Escande nfc_err(&dev->interface->dev, 854e3e02588SThierry Escande "A command is still in process\n"); 855e3e02588SThierry Escande return -EBUSY; 856e3e02588SThierry Escande } 857e3e02588SThierry Escande 8580347a6abSThierry Escande resp = alloc_skb(resp_len, GFP_KERNEL); 8590347a6abSThierry Escande if (!resp) 8600347a6abSThierry Escande return -ENOMEM; 8610347a6abSThierry Escande 8620347a6abSThierry Escande cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 8630347a6abSThierry Escande if (!cmd) { 8640347a6abSThierry Escande dev_kfree_skb(resp); 8650347a6abSThierry Escande return -ENOMEM; 8660347a6abSThierry Escande } 8670347a6abSThierry Escande 8680347a6abSThierry Escande cmd->code = cmd_code; 8690347a6abSThierry Escande cmd->req = req; 8700347a6abSThierry Escande cmd->resp = resp; 8710347a6abSThierry Escande cmd->resp_len = resp_len; 8720347a6abSThierry Escande cmd->complete_cb = complete_cb; 8730347a6abSThierry Escande cmd->complete_cb_context = complete_cb_context; 8740347a6abSThierry Escande 8750347a6abSThierry Escande port100_build_cmd_frame(dev, cmd_code, req); 8760347a6abSThierry Escande 8770347a6abSThierry Escande dev->cmd = cmd; 8780347a6abSThierry Escande 8790347a6abSThierry Escande rc = port100_send_frame_async(dev, req, resp, resp_len); 8800347a6abSThierry Escande if (rc) { 8810347a6abSThierry Escande kfree(cmd); 8820347a6abSThierry Escande dev_kfree_skb(resp); 8830347a6abSThierry Escande dev->cmd = NULL; 8840347a6abSThierry Escande } 8850347a6abSThierry Escande 8860347a6abSThierry Escande return rc; 8870347a6abSThierry Escande } 8880347a6abSThierry Escande 8890347a6abSThierry Escande struct port100_sync_cmd_response { 8900347a6abSThierry Escande struct sk_buff *resp; 8910347a6abSThierry Escande struct completion done; 8920347a6abSThierry Escande }; 8930347a6abSThierry Escande 8940347a6abSThierry Escande static void port100_wq_cmd_complete(struct work_struct *work) 8950347a6abSThierry Escande { 8960347a6abSThierry Escande struct port100 *dev = container_of(work, struct port100, 8970347a6abSThierry Escande cmd_complete_work); 8980347a6abSThierry Escande 8990347a6abSThierry Escande port100_send_async_complete(dev); 9000347a6abSThierry Escande } 9010347a6abSThierry Escande 9020347a6abSThierry Escande static void port100_send_sync_complete(struct port100 *dev, void *_arg, 9030347a6abSThierry Escande struct sk_buff *resp) 9040347a6abSThierry Escande { 9050347a6abSThierry Escande struct port100_sync_cmd_response *arg = _arg; 9060347a6abSThierry Escande 9070347a6abSThierry Escande arg->resp = resp; 9080347a6abSThierry Escande complete(&arg->done); 9090347a6abSThierry Escande } 9100347a6abSThierry Escande 9110347a6abSThierry Escande static struct sk_buff *port100_send_cmd_sync(struct port100 *dev, u8 cmd_code, 9120347a6abSThierry Escande struct sk_buff *req) 9130347a6abSThierry Escande { 9140347a6abSThierry Escande int rc; 9150347a6abSThierry Escande struct port100_sync_cmd_response arg; 9160347a6abSThierry Escande 9170347a6abSThierry Escande init_completion(&arg.done); 9180347a6abSThierry Escande 9190347a6abSThierry Escande rc = port100_send_cmd_async(dev, cmd_code, req, 9200347a6abSThierry Escande port100_send_sync_complete, &arg); 9210347a6abSThierry Escande if (rc) { 9220347a6abSThierry Escande dev_kfree_skb(req); 9230347a6abSThierry Escande return ERR_PTR(rc); 9240347a6abSThierry Escande } 9250347a6abSThierry Escande 9260347a6abSThierry Escande wait_for_completion(&arg.done); 9270347a6abSThierry Escande 9280347a6abSThierry Escande return arg.resp; 9290347a6abSThierry Escande } 9300347a6abSThierry Escande 9310347a6abSThierry Escande static void port100_send_complete(struct urb *urb) 9320347a6abSThierry Escande { 9330347a6abSThierry Escande struct port100 *dev = urb->context; 9340347a6abSThierry Escande 935a52bd7d2SThierry Escande if (dev->cmd_cancel) { 93624971281SOGAWA Hirofumi complete_all(&dev->cmd_cancel_done); 937b74584c1SThierry Escande dev->cmd_cancel = false; 938a52bd7d2SThierry Escande } 939b74584c1SThierry Escande 9400347a6abSThierry Escande switch (urb->status) { 9410347a6abSThierry Escande case 0: 9420347a6abSThierry Escande break; /* success */ 9430347a6abSThierry Escande case -ECONNRESET: 9440347a6abSThierry Escande case -ENOENT: 9450347a6abSThierry Escande nfc_err(&dev->interface->dev, 9463590ebc0SJoe Perches "The urb has been stopped (status %d)\n", urb->status); 9470347a6abSThierry Escande break; 9480347a6abSThierry Escande case -ESHUTDOWN: 9490347a6abSThierry Escande default: 9503590ebc0SJoe Perches nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", 9510347a6abSThierry Escande urb->status); 9520347a6abSThierry Escande } 9530347a6abSThierry Escande } 9540347a6abSThierry Escande 955562d4d59SThierry Escande static void port100_abort_cmd(struct nfc_digital_dev *ddev) 956562d4d59SThierry Escande { 9570347a6abSThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 9580347a6abSThierry Escande 9590347a6abSThierry Escande /* An ack will cancel the last issued command */ 9600347a6abSThierry Escande port100_send_ack(dev); 9610347a6abSThierry Escande 9620347a6abSThierry Escande /* cancel the urb request */ 9630347a6abSThierry Escande usb_kill_urb(dev->in_urb); 9640347a6abSThierry Escande } 9650347a6abSThierry Escande 966*9a4af01cSKrzysztof Kozlowski static struct sk_buff *port100_alloc_skb(const struct port100 *dev, unsigned int size) 9670347a6abSThierry Escande { 9680347a6abSThierry Escande struct sk_buff *skb; 9690347a6abSThierry Escande 9700347a6abSThierry Escande skb = alloc_skb(dev->skb_headroom + dev->skb_tailroom + size, 9710347a6abSThierry Escande GFP_KERNEL); 9720347a6abSThierry Escande if (skb) 9730347a6abSThierry Escande skb_reserve(skb, dev->skb_headroom); 9740347a6abSThierry Escande 9750347a6abSThierry Escande return skb; 9760347a6abSThierry Escande } 9770347a6abSThierry Escande 9780347a6abSThierry Escande static int port100_set_command_type(struct port100 *dev, u8 command_type) 9790347a6abSThierry Escande { 9800347a6abSThierry Escande struct sk_buff *skb; 9810347a6abSThierry Escande struct sk_buff *resp; 9820347a6abSThierry Escande int rc; 9830347a6abSThierry Escande 9840347a6abSThierry Escande skb = port100_alloc_skb(dev, 1); 9850347a6abSThierry Escande if (!skb) 9860347a6abSThierry Escande return -ENOMEM; 9870347a6abSThierry Escande 988634fef61SJohannes Berg skb_put_u8(skb, command_type); 9890347a6abSThierry Escande 9900347a6abSThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_SET_COMMAND_TYPE, skb); 9910347a6abSThierry Escande if (IS_ERR(resp)) 9920347a6abSThierry Escande return PTR_ERR(resp); 9930347a6abSThierry Escande 9940347a6abSThierry Escande rc = resp->data[0]; 9950347a6abSThierry Escande 9960347a6abSThierry Escande dev_kfree_skb(resp); 9970347a6abSThierry Escande 9980347a6abSThierry Escande return rc; 9990347a6abSThierry Escande } 10000347a6abSThierry Escande 10010347a6abSThierry Escande static u64 port100_get_command_type_mask(struct port100 *dev) 10020347a6abSThierry Escande { 10030347a6abSThierry Escande struct sk_buff *skb; 10040347a6abSThierry Escande struct sk_buff *resp; 10050347a6abSThierry Escande u64 mask; 10060347a6abSThierry Escande 10070347a6abSThierry Escande skb = port100_alloc_skb(dev, 0); 10080347a6abSThierry Escande if (!skb) 10090347a6abSThierry Escande return -ENOMEM; 10100347a6abSThierry Escande 10110347a6abSThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb); 10120347a6abSThierry Escande if (IS_ERR(resp)) 10130347a6abSThierry Escande return PTR_ERR(resp); 10140347a6abSThierry Escande 10150347a6abSThierry Escande if (resp->len < 8) 10160347a6abSThierry Escande mask = 0; 10170347a6abSThierry Escande else 10180347a6abSThierry Escande mask = be64_to_cpu(*(__be64 *)resp->data); 10190347a6abSThierry Escande 10200347a6abSThierry Escande dev_kfree_skb(resp); 10210347a6abSThierry Escande 10220347a6abSThierry Escande return mask; 10230347a6abSThierry Escande } 10240347a6abSThierry Escande 10250347a6abSThierry Escande static u16 port100_get_firmware_version(struct port100 *dev) 10260347a6abSThierry Escande { 10270347a6abSThierry Escande struct sk_buff *skb; 10280347a6abSThierry Escande struct sk_buff *resp; 10290347a6abSThierry Escande u16 fw_ver; 10300347a6abSThierry Escande 10310347a6abSThierry Escande skb = port100_alloc_skb(dev, 0); 10320347a6abSThierry Escande if (!skb) 10330347a6abSThierry Escande return 0; 10340347a6abSThierry Escande 10350347a6abSThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_FIRMWARE_VERSION, 10360347a6abSThierry Escande skb); 10370347a6abSThierry Escande if (IS_ERR(resp)) 10380347a6abSThierry Escande return 0; 10390347a6abSThierry Escande 10400347a6abSThierry Escande fw_ver = le16_to_cpu(*(__le16 *)resp->data); 10410347a6abSThierry Escande 10420347a6abSThierry Escande dev_kfree_skb(resp); 10430347a6abSThierry Escande 10440347a6abSThierry Escande return fw_ver; 1045562d4d59SThierry Escande } 1046562d4d59SThierry Escande 1047562d4d59SThierry Escande static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on) 1048562d4d59SThierry Escande { 10499f7b57f2SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 10509f7b57f2SThierry Escande struct sk_buff *skb, *resp; 10519f7b57f2SThierry Escande 10529f7b57f2SThierry Escande skb = port100_alloc_skb(dev, 1); 10539f7b57f2SThierry Escande if (!skb) 10549f7b57f2SThierry Escande return -ENOMEM; 10559f7b57f2SThierry Escande 1056634fef61SJohannes Berg skb_put_u8(skb, on ? 1 : 0); 10579f7b57f2SThierry Escande 10589f0c4542SThierry Escande /* Cancel the last command if the device is being switched off */ 10599f0c4542SThierry Escande if (!on) 10609f0c4542SThierry Escande port100_abort_cmd(ddev); 10619f0c4542SThierry Escande 10629f7b57f2SThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_SWITCH_RF, skb); 10639f7b57f2SThierry Escande 10649f7b57f2SThierry Escande if (IS_ERR(resp)) 10659f7b57f2SThierry Escande return PTR_ERR(resp); 10669f7b57f2SThierry Escande 10679f7b57f2SThierry Escande dev_kfree_skb(resp); 10689f7b57f2SThierry Escande 10699f7b57f2SThierry Escande return 0; 10709f7b57f2SThierry Escande } 10719f7b57f2SThierry Escande 10729f7b57f2SThierry Escande static int port100_in_set_rf(struct nfc_digital_dev *ddev, u8 rf) 10739f7b57f2SThierry Escande { 10749f7b57f2SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 10759f7b57f2SThierry Escande struct sk_buff *skb; 10769f7b57f2SThierry Escande struct sk_buff *resp; 10779f7b57f2SThierry Escande int rc; 10789f7b57f2SThierry Escande 10799f7b57f2SThierry Escande if (rf >= NFC_DIGITAL_RF_TECH_LAST) 10809f7b57f2SThierry Escande return -EINVAL; 10819f7b57f2SThierry Escande 10829f7b57f2SThierry Escande skb = port100_alloc_skb(dev, sizeof(struct port100_in_rf_setting)); 10839f7b57f2SThierry Escande if (!skb) 10849f7b57f2SThierry Escande return -ENOMEM; 10859f7b57f2SThierry Escande 108659ae1d12SJohannes Berg skb_put_data(skb, &in_rf_settings[rf], 10879f7b57f2SThierry Escande sizeof(struct port100_in_rf_setting)); 10889f7b57f2SThierry Escande 10899f7b57f2SThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_RF, skb); 10909f7b57f2SThierry Escande 10919f7b57f2SThierry Escande if (IS_ERR(resp)) 10929f7b57f2SThierry Escande return PTR_ERR(resp); 10939f7b57f2SThierry Escande 10949f7b57f2SThierry Escande rc = resp->data[0]; 10959f7b57f2SThierry Escande 10969f7b57f2SThierry Escande dev_kfree_skb(resp); 10979f7b57f2SThierry Escande 10989f7b57f2SThierry Escande return rc; 10999f7b57f2SThierry Escande } 11009f7b57f2SThierry Escande 11019f7b57f2SThierry Escande static int port100_in_set_framing(struct nfc_digital_dev *ddev, int param) 11029f7b57f2SThierry Escande { 11039f7b57f2SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 1104c65e7025SKrzysztof Kozlowski const struct port100_protocol *protocols; 11059f7b57f2SThierry Escande struct sk_buff *skb; 11069f7b57f2SThierry Escande struct sk_buff *resp; 11079f7b57f2SThierry Escande int num_protocols; 11089f7b57f2SThierry Escande size_t size; 11099f7b57f2SThierry Escande int rc; 11109f7b57f2SThierry Escande 11119f7b57f2SThierry Escande if (param >= NFC_DIGITAL_FRAMING_LAST) 11129f7b57f2SThierry Escande return -EINVAL; 11139f7b57f2SThierry Escande 11149f7b57f2SThierry Escande protocols = in_protocols[param]; 11159f7b57f2SThierry Escande 11169f7b57f2SThierry Escande num_protocols = 0; 11179f7b57f2SThierry Escande while (protocols[num_protocols].number != PORT100_IN_PROT_END) 11189f7b57f2SThierry Escande num_protocols++; 11199f7b57f2SThierry Escande 11209f7b57f2SThierry Escande if (!num_protocols) 11219f7b57f2SThierry Escande return 0; 11229f7b57f2SThierry Escande 11239f7b57f2SThierry Escande size = sizeof(struct port100_protocol) * num_protocols; 11249f7b57f2SThierry Escande 11259f7b57f2SThierry Escande skb = port100_alloc_skb(dev, size); 11269f7b57f2SThierry Escande if (!skb) 11279f7b57f2SThierry Escande return -ENOMEM; 11289f7b57f2SThierry Escande 112959ae1d12SJohannes Berg skb_put_data(skb, protocols, size); 11309f7b57f2SThierry Escande 11319f7b57f2SThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_PROTOCOL, skb); 11329f7b57f2SThierry Escande 11339f7b57f2SThierry Escande if (IS_ERR(resp)) 11349f7b57f2SThierry Escande return PTR_ERR(resp); 11359f7b57f2SThierry Escande 11369f7b57f2SThierry Escande rc = resp->data[0]; 11379f7b57f2SThierry Escande 11389f7b57f2SThierry Escande dev_kfree_skb(resp); 11399f7b57f2SThierry Escande 11409f7b57f2SThierry Escande return rc; 1141562d4d59SThierry Escande } 1142562d4d59SThierry Escande 1143562d4d59SThierry Escande static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type, 1144562d4d59SThierry Escande int param) 1145562d4d59SThierry Escande { 11469f7b57f2SThierry Escande if (type == NFC_DIGITAL_CONFIG_RF_TECH) 11479f7b57f2SThierry Escande return port100_in_set_rf(ddev, param); 11489f7b57f2SThierry Escande 11499f7b57f2SThierry Escande if (type == NFC_DIGITAL_CONFIG_FRAMING) 11509f7b57f2SThierry Escande return port100_in_set_framing(ddev, param); 11519f7b57f2SThierry Escande 11529f7b57f2SThierry Escande return -EINVAL; 11539f7b57f2SThierry Escande } 11549f7b57f2SThierry Escande 11559f7b57f2SThierry Escande static void port100_in_comm_rf_complete(struct port100 *dev, void *arg, 11569f7b57f2SThierry Escande struct sk_buff *resp) 11579f7b57f2SThierry Escande { 1158*9a4af01cSKrzysztof Kozlowski const struct port100_cb_arg *cb_arg = arg; 11599f7b57f2SThierry Escande nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; 11609f7b57f2SThierry Escande u32 status; 11619f7b57f2SThierry Escande int rc; 11629f7b57f2SThierry Escande 11639f7b57f2SThierry Escande if (IS_ERR(resp)) { 11649f7b57f2SThierry Escande rc = PTR_ERR(resp); 11659f7b57f2SThierry Escande goto exit; 11669f7b57f2SThierry Escande } 11679f7b57f2SThierry Escande 11689f7b57f2SThierry Escande if (resp->len < 4) { 11699f7b57f2SThierry Escande nfc_err(&dev->interface->dev, 11703590ebc0SJoe Perches "Invalid packet length received\n"); 11719f7b57f2SThierry Escande rc = -EIO; 11729f7b57f2SThierry Escande goto error; 11739f7b57f2SThierry Escande } 11749f7b57f2SThierry Escande 11759f7b57f2SThierry Escande status = le32_to_cpu(*(__le32 *)resp->data); 11769f7b57f2SThierry Escande 11779f7b57f2SThierry Escande skb_pull(resp, sizeof(u32)); 11789f7b57f2SThierry Escande 11799f7b57f2SThierry Escande if (status == PORT100_CMD_STATUS_TIMEOUT) { 11809f7b57f2SThierry Escande rc = -ETIMEDOUT; 11819f7b57f2SThierry Escande goto error; 11829f7b57f2SThierry Escande } 11839f7b57f2SThierry Escande 11849f7b57f2SThierry Escande if (status != PORT100_CMD_STATUS_OK) { 11859f7b57f2SThierry Escande nfc_err(&dev->interface->dev, 11869f7b57f2SThierry Escande "in_comm_rf failed with status 0x%08x\n", status); 11879f7b57f2SThierry Escande rc = -EIO; 11889f7b57f2SThierry Escande goto error; 11899f7b57f2SThierry Escande } 11909f7b57f2SThierry Escande 11919f7b57f2SThierry Escande /* Remove collision bits byte */ 11929f7b57f2SThierry Escande skb_pull(resp, 1); 11939f7b57f2SThierry Escande 11949f7b57f2SThierry Escande goto exit; 11959f7b57f2SThierry Escande 11969f7b57f2SThierry Escande error: 11979f7b57f2SThierry Escande kfree_skb(resp); 11989f7b57f2SThierry Escande resp = ERR_PTR(rc); 11999f7b57f2SThierry Escande 12009f7b57f2SThierry Escande exit: 12019f7b57f2SThierry Escande cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); 12029f7b57f2SThierry Escande 12039f7b57f2SThierry Escande kfree(cb_arg); 1204562d4d59SThierry Escande } 1205562d4d59SThierry Escande 1206562d4d59SThierry Escande static int port100_in_send_cmd(struct nfc_digital_dev *ddev, 1207562d4d59SThierry Escande struct sk_buff *skb, u16 _timeout, 1208562d4d59SThierry Escande nfc_digital_cmd_complete_t cb, void *arg) 1209562d4d59SThierry Escande { 12109f7b57f2SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 12119f7b57f2SThierry Escande struct port100_cb_arg *cb_arg; 12129f7b57f2SThierry Escande __le16 timeout; 12139f7b57f2SThierry Escande 12149f7b57f2SThierry Escande cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); 12159f7b57f2SThierry Escande if (!cb_arg) 12169f7b57f2SThierry Escande return -ENOMEM; 12179f7b57f2SThierry Escande 12189f7b57f2SThierry Escande cb_arg->complete_cb = cb; 12199f7b57f2SThierry Escande cb_arg->complete_arg = arg; 12209f7b57f2SThierry Escande 12219f7b57f2SThierry Escande timeout = cpu_to_le16(_timeout * 10); 12229f7b57f2SThierry Escande 12239f7b57f2SThierry Escande memcpy(skb_push(skb, sizeof(__le16)), &timeout, sizeof(__le16)); 12249f7b57f2SThierry Escande 12259f7b57f2SThierry Escande return port100_send_cmd_async(dev, PORT100_CMD_IN_COMM_RF, skb, 12269f7b57f2SThierry Escande port100_in_comm_rf_complete, cb_arg); 1227562d4d59SThierry Escande } 1228562d4d59SThierry Escande 12297227c021SThierry Escande static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf) 12307227c021SThierry Escande { 12317227c021SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 12327227c021SThierry Escande struct sk_buff *skb; 12337227c021SThierry Escande struct sk_buff *resp; 12347227c021SThierry Escande int rc; 12357227c021SThierry Escande 12367227c021SThierry Escande if (rf >= NFC_DIGITAL_RF_TECH_LAST) 12377227c021SThierry Escande return -EINVAL; 12387227c021SThierry Escande 12397227c021SThierry Escande skb = port100_alloc_skb(dev, sizeof(struct port100_tg_rf_setting)); 12407227c021SThierry Escande if (!skb) 12417227c021SThierry Escande return -ENOMEM; 12427227c021SThierry Escande 124359ae1d12SJohannes Berg skb_put_data(skb, &tg_rf_settings[rf], 12447227c021SThierry Escande sizeof(struct port100_tg_rf_setting)); 12457227c021SThierry Escande 12467227c021SThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_RF, skb); 12477227c021SThierry Escande 12487227c021SThierry Escande if (IS_ERR(resp)) 12497227c021SThierry Escande return PTR_ERR(resp); 12507227c021SThierry Escande 12517227c021SThierry Escande rc = resp->data[0]; 12527227c021SThierry Escande 12537227c021SThierry Escande dev_kfree_skb(resp); 12547227c021SThierry Escande 12557227c021SThierry Escande return rc; 12567227c021SThierry Escande } 12577227c021SThierry Escande 12587227c021SThierry Escande static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param) 12597227c021SThierry Escande { 12607227c021SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 1261c65e7025SKrzysztof Kozlowski const struct port100_protocol *protocols; 12627227c021SThierry Escande struct sk_buff *skb; 12637227c021SThierry Escande struct sk_buff *resp; 12647227c021SThierry Escande int rc; 12657227c021SThierry Escande int num_protocols; 12667227c021SThierry Escande size_t size; 12677227c021SThierry Escande 12687227c021SThierry Escande if (param >= NFC_DIGITAL_FRAMING_LAST) 12697227c021SThierry Escande return -EINVAL; 12707227c021SThierry Escande 12717227c021SThierry Escande protocols = tg_protocols[param]; 12727227c021SThierry Escande 12737227c021SThierry Escande num_protocols = 0; 12747227c021SThierry Escande while (protocols[num_protocols].number != PORT100_TG_PROT_END) 12757227c021SThierry Escande num_protocols++; 12767227c021SThierry Escande 12777227c021SThierry Escande if (!num_protocols) 12787227c021SThierry Escande return 0; 12797227c021SThierry Escande 12807227c021SThierry Escande size = sizeof(struct port100_protocol) * num_protocols; 12817227c021SThierry Escande 12827227c021SThierry Escande skb = port100_alloc_skb(dev, size); 12837227c021SThierry Escande if (!skb) 12847227c021SThierry Escande return -ENOMEM; 12857227c021SThierry Escande 128659ae1d12SJohannes Berg skb_put_data(skb, protocols, size); 12877227c021SThierry Escande 12887227c021SThierry Escande resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_PROTOCOL, skb); 12897227c021SThierry Escande 12907227c021SThierry Escande if (IS_ERR(resp)) 12917227c021SThierry Escande return PTR_ERR(resp); 12927227c021SThierry Escande 12937227c021SThierry Escande rc = resp->data[0]; 12947227c021SThierry Escande 12957227c021SThierry Escande dev_kfree_skb(resp); 12967227c021SThierry Escande 12977227c021SThierry Escande return rc; 12987227c021SThierry Escande } 12997227c021SThierry Escande 1300562d4d59SThierry Escande static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type, 1301562d4d59SThierry Escande int param) 1302562d4d59SThierry Escande { 13037227c021SThierry Escande if (type == NFC_DIGITAL_CONFIG_RF_TECH) 13047227c021SThierry Escande return port100_tg_set_rf(ddev, param); 13057227c021SThierry Escande 13067227c021SThierry Escande if (type == NFC_DIGITAL_CONFIG_FRAMING) 13077227c021SThierry Escande return port100_tg_set_framing(ddev, param); 13087227c021SThierry Escande 13097227c021SThierry Escande return -EINVAL; 13107227c021SThierry Escande } 13117227c021SThierry Escande 13127227c021SThierry Escande static bool port100_tg_target_activated(struct port100 *dev, u8 tgt_activated) 13137227c021SThierry Escande { 13147227c021SThierry Escande u8 mask; 13157227c021SThierry Escande 13167227c021SThierry Escande switch (dev->cmd_type) { 13177227c021SThierry Escande case PORT100_CMD_TYPE_0: 13187227c021SThierry Escande mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK; 13197227c021SThierry Escande break; 13207227c021SThierry Escande case PORT100_CMD_TYPE_1: 13217227c021SThierry Escande mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK | 13227227c021SThierry Escande PORT100_MDAA_TGT_WAS_ACTIVATED_MASK; 13237227c021SThierry Escande break; 13247227c021SThierry Escande default: 13253590ebc0SJoe Perches nfc_err(&dev->interface->dev, "Unknown command type\n"); 13267227c021SThierry Escande return false; 13277227c021SThierry Escande } 13287227c021SThierry Escande 13297227c021SThierry Escande return ((tgt_activated & mask) == mask); 13307227c021SThierry Escande } 13317227c021SThierry Escande 13327227c021SThierry Escande static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg, 13337227c021SThierry Escande struct sk_buff *resp) 13347227c021SThierry Escande { 13357227c021SThierry Escande u32 status; 1336*9a4af01cSKrzysztof Kozlowski const struct port100_cb_arg *cb_arg = arg; 13377227c021SThierry Escande nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; 13387227c021SThierry Escande struct port100_tg_comm_rf_res *hdr; 13397227c021SThierry Escande 13407227c021SThierry Escande if (IS_ERR(resp)) 13417227c021SThierry Escande goto exit; 13427227c021SThierry Escande 13437227c021SThierry Escande hdr = (struct port100_tg_comm_rf_res *)resp->data; 13447227c021SThierry Escande 13457227c021SThierry Escande status = le32_to_cpu(hdr->status); 13467227c021SThierry Escande 13477227c021SThierry Escande if (cb_arg->mdaa && 13487227c021SThierry Escande !port100_tg_target_activated(dev, hdr->target_activated)) { 13497227c021SThierry Escande kfree_skb(resp); 13507227c021SThierry Escande resp = ERR_PTR(-ETIMEDOUT); 13517227c021SThierry Escande 13527227c021SThierry Escande goto exit; 13537227c021SThierry Escande } 13547227c021SThierry Escande 13557227c021SThierry Escande skb_pull(resp, sizeof(struct port100_tg_comm_rf_res)); 13567227c021SThierry Escande 13577227c021SThierry Escande if (status != PORT100_CMD_STATUS_OK) { 13587227c021SThierry Escande kfree_skb(resp); 13597227c021SThierry Escande 13607227c021SThierry Escande if (status == PORT100_CMD_STATUS_TIMEOUT) 13617227c021SThierry Escande resp = ERR_PTR(-ETIMEDOUT); 13627227c021SThierry Escande else 13637227c021SThierry Escande resp = ERR_PTR(-EIO); 13647227c021SThierry Escande } 13657227c021SThierry Escande 13667227c021SThierry Escande exit: 13677227c021SThierry Escande cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); 13687227c021SThierry Escande 13697227c021SThierry Escande kfree(cb_arg); 1370562d4d59SThierry Escande } 1371562d4d59SThierry Escande 1372562d4d59SThierry Escande static int port100_tg_send_cmd(struct nfc_digital_dev *ddev, 1373562d4d59SThierry Escande struct sk_buff *skb, u16 timeout, 1374562d4d59SThierry Escande nfc_digital_cmd_complete_t cb, void *arg) 1375562d4d59SThierry Escande { 13767227c021SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 13777227c021SThierry Escande struct port100_tg_comm_rf_cmd *hdr; 13787227c021SThierry Escande struct port100_cb_arg *cb_arg; 13797227c021SThierry Escande 13807227c021SThierry Escande cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); 13817227c021SThierry Escande if (!cb_arg) 13827227c021SThierry Escande return -ENOMEM; 13837227c021SThierry Escande 13847227c021SThierry Escande cb_arg->complete_cb = cb; 13857227c021SThierry Escande cb_arg->complete_arg = arg; 13867227c021SThierry Escande 13877227c021SThierry Escande skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); 13887227c021SThierry Escande 13897227c021SThierry Escande hdr = (struct port100_tg_comm_rf_cmd *)skb->data; 13907227c021SThierry Escande 13917227c021SThierry Escande memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); 13927227c021SThierry Escande hdr->guard_time = cpu_to_le16(500); 13937227c021SThierry Escande hdr->send_timeout = cpu_to_le16(0xFFFF); 13947227c021SThierry Escande hdr->recv_timeout = cpu_to_le16(timeout); 13957227c021SThierry Escande 13967227c021SThierry Escande return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, 13977227c021SThierry Escande port100_tg_comm_rf_complete, cb_arg); 1398562d4d59SThierry Escande } 1399562d4d59SThierry Escande 1400562d4d59SThierry Escande static int port100_listen_mdaa(struct nfc_digital_dev *ddev, 1401562d4d59SThierry Escande struct digital_tg_mdaa_params *params, 1402562d4d59SThierry Escande u16 timeout, 1403562d4d59SThierry Escande nfc_digital_cmd_complete_t cb, void *arg) 1404562d4d59SThierry Escande { 14057227c021SThierry Escande struct port100 *dev = nfc_digital_get_drvdata(ddev); 14067227c021SThierry Escande struct port100_tg_comm_rf_cmd *hdr; 14077227c021SThierry Escande struct port100_cb_arg *cb_arg; 14087227c021SThierry Escande struct sk_buff *skb; 14097227c021SThierry Escande int rc; 14107227c021SThierry Escande 14117227c021SThierry Escande rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, 14127227c021SThierry Escande NFC_DIGITAL_RF_TECH_106A); 14137227c021SThierry Escande if (rc) 14147227c021SThierry Escande return rc; 14157227c021SThierry Escande 14167227c021SThierry Escande rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, 14177227c021SThierry Escande NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); 14187227c021SThierry Escande if (rc) 14197227c021SThierry Escande return rc; 14207227c021SThierry Escande 14217227c021SThierry Escande cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); 14227227c021SThierry Escande if (!cb_arg) 14237227c021SThierry Escande return -ENOMEM; 14247227c021SThierry Escande 14257227c021SThierry Escande cb_arg->complete_cb = cb; 14267227c021SThierry Escande cb_arg->complete_arg = arg; 14277227c021SThierry Escande cb_arg->mdaa = 1; 14287227c021SThierry Escande 14297227c021SThierry Escande skb = port100_alloc_skb(dev, 0); 14307227c021SThierry Escande if (!skb) { 14317227c021SThierry Escande kfree(cb_arg); 14327227c021SThierry Escande return -ENOMEM; 14337227c021SThierry Escande } 14347227c021SThierry Escande 14357227c021SThierry Escande skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); 14367227c021SThierry Escande hdr = (struct port100_tg_comm_rf_cmd *)skb->data; 14377227c021SThierry Escande 14387227c021SThierry Escande memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); 14397227c021SThierry Escande 14407227c021SThierry Escande hdr->guard_time = 0; 14417227c021SThierry Escande hdr->send_timeout = cpu_to_le16(0xFFFF); 14427227c021SThierry Escande hdr->mdaa = 1; 14437227c021SThierry Escande hdr->nfca_param[0] = (params->sens_res >> 8) & 0xFF; 14447227c021SThierry Escande hdr->nfca_param[1] = params->sens_res & 0xFF; 14457227c021SThierry Escande memcpy(hdr->nfca_param + 2, params->nfcid1, 3); 14467227c021SThierry Escande hdr->nfca_param[5] = params->sel_res; 14477227c021SThierry Escande memcpy(hdr->nfcf_param, params->nfcid2, 8); 14487227c021SThierry Escande hdr->nfcf_param[16] = (params->sc >> 8) & 0xFF; 14497227c021SThierry Escande hdr->nfcf_param[17] = params->sc & 0xFF; 14507227c021SThierry Escande hdr->recv_timeout = cpu_to_le16(timeout); 14517227c021SThierry Escande 14527227c021SThierry Escande return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, 14537227c021SThierry Escande port100_tg_comm_rf_complete, cb_arg); 1454562d4d59SThierry Escande } 1455562d4d59SThierry Escande 1456562d4d59SThierry Escande static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, 1457562d4d59SThierry Escande nfc_digital_cmd_complete_t cb, void *arg) 1458562d4d59SThierry Escande { 1459*9a4af01cSKrzysztof Kozlowski const struct port100 *dev = nfc_digital_get_drvdata(ddev); 14607227c021SThierry Escande struct sk_buff *skb; 14617227c021SThierry Escande 14627227c021SThierry Escande skb = port100_alloc_skb(dev, 0); 14637227c021SThierry Escande if (!skb) 14647227c021SThierry Escande return -ENOMEM; 14657227c021SThierry Escande 14667227c021SThierry Escande return port100_tg_send_cmd(ddev, skb, timeout, cb, arg); 1467562d4d59SThierry Escande } 1468562d4d59SThierry Escande 14697186aac9SKrzysztof Kozlowski static const struct nfc_digital_ops port100_digital_ops = { 1470562d4d59SThierry Escande .in_configure_hw = port100_in_configure_hw, 1471562d4d59SThierry Escande .in_send_cmd = port100_in_send_cmd, 1472562d4d59SThierry Escande 1473562d4d59SThierry Escande .tg_listen_mdaa = port100_listen_mdaa, 1474562d4d59SThierry Escande .tg_listen = port100_listen, 1475562d4d59SThierry Escande .tg_configure_hw = port100_tg_configure_hw, 1476562d4d59SThierry Escande .tg_send_cmd = port100_tg_send_cmd, 1477562d4d59SThierry Escande 1478562d4d59SThierry Escande .switch_rf = port100_switch_rf, 1479562d4d59SThierry Escande .abort_cmd = port100_abort_cmd, 1480562d4d59SThierry Escande }; 1481562d4d59SThierry Escande 1482562d4d59SThierry Escande static const struct usb_device_id port100_table[] = { 14839728ee92SOGAWA Hirofumi { USB_DEVICE(SONY_VENDOR_ID, RCS380S_PRODUCT_ID), }, 14849728ee92SOGAWA Hirofumi { USB_DEVICE(SONY_VENDOR_ID, RCS380P_PRODUCT_ID), }, 1485562d4d59SThierry Escande { } 1486562d4d59SThierry Escande }; 1487562d4d59SThierry Escande MODULE_DEVICE_TABLE(usb, port100_table); 1488562d4d59SThierry Escande 1489562d4d59SThierry Escande static int port100_probe(struct usb_interface *interface, 1490562d4d59SThierry Escande const struct usb_device_id *id) 1491562d4d59SThierry Escande { 1492562d4d59SThierry Escande struct port100 *dev; 1493562d4d59SThierry Escande int rc; 14940347a6abSThierry Escande struct usb_host_interface *iface_desc; 14950347a6abSThierry Escande struct usb_endpoint_descriptor *endpoint; 14960347a6abSThierry Escande int in_endpoint; 14970347a6abSThierry Escande int out_endpoint; 14980347a6abSThierry Escande u16 fw_version; 14990347a6abSThierry Escande u64 cmd_type_mask; 15000347a6abSThierry Escande int i; 1501562d4d59SThierry Escande 1502562d4d59SThierry Escande dev = devm_kzalloc(&interface->dev, sizeof(struct port100), GFP_KERNEL); 1503562d4d59SThierry Escande if (!dev) 1504562d4d59SThierry Escande return -ENOMEM; 1505562d4d59SThierry Escande 1506b74584c1SThierry Escande mutex_init(&dev->out_urb_lock); 1507562d4d59SThierry Escande dev->udev = usb_get_dev(interface_to_usbdev(interface)); 1508562d4d59SThierry Escande dev->interface = interface; 1509562d4d59SThierry Escande usb_set_intfdata(interface, dev); 1510562d4d59SThierry Escande 15110347a6abSThierry Escande in_endpoint = out_endpoint = 0; 15120347a6abSThierry Escande iface_desc = interface->cur_altsetting; 15130347a6abSThierry Escande for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { 15140347a6abSThierry Escande endpoint = &iface_desc->endpoint[i].desc; 15150347a6abSThierry Escande 15160347a6abSThierry Escande if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) 15170347a6abSThierry Escande in_endpoint = endpoint->bEndpointAddress; 15180347a6abSThierry Escande 15190347a6abSThierry Escande if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) 15200347a6abSThierry Escande out_endpoint = endpoint->bEndpointAddress; 15210347a6abSThierry Escande } 15220347a6abSThierry Escande 15230347a6abSThierry Escande if (!in_endpoint || !out_endpoint) { 15240347a6abSThierry Escande nfc_err(&interface->dev, 15250347a6abSThierry Escande "Could not find bulk-in or bulk-out endpoint\n"); 15260347a6abSThierry Escande rc = -ENODEV; 15270347a6abSThierry Escande goto error; 15280347a6abSThierry Escande } 15290347a6abSThierry Escande 15300347a6abSThierry Escande dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); 15310347a6abSThierry Escande dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); 15320347a6abSThierry Escande 15330347a6abSThierry Escande if (!dev->in_urb || !dev->out_urb) { 15340347a6abSThierry Escande nfc_err(&interface->dev, "Could not allocate USB URBs\n"); 15350347a6abSThierry Escande rc = -ENOMEM; 15360347a6abSThierry Escande goto error; 15370347a6abSThierry Escande } 15380347a6abSThierry Escande 15390347a6abSThierry Escande usb_fill_bulk_urb(dev->in_urb, dev->udev, 15400347a6abSThierry Escande usb_rcvbulkpipe(dev->udev, in_endpoint), 15410347a6abSThierry Escande NULL, 0, NULL, dev); 15420347a6abSThierry Escande usb_fill_bulk_urb(dev->out_urb, dev->udev, 15430347a6abSThierry Escande usb_sndbulkpipe(dev->udev, out_endpoint), 15440347a6abSThierry Escande NULL, 0, port100_send_complete, dev); 15450ada0768SOGAWA Hirofumi dev->out_urb->transfer_flags = URB_ZERO_PACKET; 15460347a6abSThierry Escande 15470347a6abSThierry Escande dev->skb_headroom = PORT100_FRAME_HEADER_LEN + 15480347a6abSThierry Escande PORT100_COMM_RF_HEAD_MAX_LEN; 15490347a6abSThierry Escande dev->skb_tailroom = PORT100_FRAME_TAIL_LEN; 15500347a6abSThierry Escande 155124971281SOGAWA Hirofumi init_completion(&dev->cmd_cancel_done); 15520347a6abSThierry Escande INIT_WORK(&dev->cmd_complete_work, port100_wq_cmd_complete); 15530347a6abSThierry Escande 15540347a6abSThierry Escande /* The first thing to do with the Port-100 is to set the command type 15550347a6abSThierry Escande * to be used. If supported we use command type 1. 0 otherwise. 15560347a6abSThierry Escande */ 15570347a6abSThierry Escande cmd_type_mask = port100_get_command_type_mask(dev); 15580347a6abSThierry Escande if (!cmd_type_mask) { 15590347a6abSThierry Escande nfc_err(&interface->dev, 15603590ebc0SJoe Perches "Could not get supported command types\n"); 15610347a6abSThierry Escande rc = -ENODEV; 15620347a6abSThierry Escande goto error; 15630347a6abSThierry Escande } 15640347a6abSThierry Escande 15650347a6abSThierry Escande if (PORT100_CMD_TYPE_IS_SUPPORTED(cmd_type_mask, PORT100_CMD_TYPE_1)) 15660347a6abSThierry Escande dev->cmd_type = PORT100_CMD_TYPE_1; 15670347a6abSThierry Escande else 15680347a6abSThierry Escande dev->cmd_type = PORT100_CMD_TYPE_0; 15690347a6abSThierry Escande 15700347a6abSThierry Escande rc = port100_set_command_type(dev, dev->cmd_type); 15710347a6abSThierry Escande if (rc) { 15720347a6abSThierry Escande nfc_err(&interface->dev, 15733590ebc0SJoe Perches "The device does not support command type %u\n", 15740347a6abSThierry Escande dev->cmd_type); 15750347a6abSThierry Escande goto error; 15760347a6abSThierry Escande } 15770347a6abSThierry Escande 15780347a6abSThierry Escande fw_version = port100_get_firmware_version(dev); 15790347a6abSThierry Escande if (!fw_version) 15800347a6abSThierry Escande nfc_err(&interface->dev, 15813590ebc0SJoe Perches "Could not get device firmware version\n"); 15820347a6abSThierry Escande 15830347a6abSThierry Escande nfc_info(&interface->dev, 15840347a6abSThierry Escande "Sony NFC Port-100 Series attached (firmware v%x.%02x)\n", 15850347a6abSThierry Escande (fw_version & 0xFF00) >> 8, fw_version & 0xFF); 1586562d4d59SThierry Escande 1587562d4d59SThierry Escande dev->nfc_digital_dev = nfc_digital_allocate_device(&port100_digital_ops, 1588562d4d59SThierry Escande PORT100_PROTOCOLS, 1589562d4d59SThierry Escande PORT100_CAPABILITIES, 1590562d4d59SThierry Escande dev->skb_headroom, 1591562d4d59SThierry Escande dev->skb_tailroom); 1592562d4d59SThierry Escande if (!dev->nfc_digital_dev) { 1593562d4d59SThierry Escande nfc_err(&interface->dev, 15943590ebc0SJoe Perches "Could not allocate nfc_digital_dev\n"); 1595562d4d59SThierry Escande rc = -ENOMEM; 1596562d4d59SThierry Escande goto error; 1597562d4d59SThierry Escande } 1598562d4d59SThierry Escande 1599562d4d59SThierry Escande nfc_digital_set_parent_dev(dev->nfc_digital_dev, &interface->dev); 1600562d4d59SThierry Escande nfc_digital_set_drvdata(dev->nfc_digital_dev, dev); 1601562d4d59SThierry Escande 1602562d4d59SThierry Escande rc = nfc_digital_register_device(dev->nfc_digital_dev); 1603562d4d59SThierry Escande if (rc) { 1604562d4d59SThierry Escande nfc_err(&interface->dev, 16053590ebc0SJoe Perches "Could not register digital device\n"); 1606562d4d59SThierry Escande goto free_nfc_dev; 1607562d4d59SThierry Escande } 1608562d4d59SThierry Escande 1609562d4d59SThierry Escande return 0; 1610562d4d59SThierry Escande 1611562d4d59SThierry Escande free_nfc_dev: 1612562d4d59SThierry Escande nfc_digital_free_device(dev->nfc_digital_dev); 1613562d4d59SThierry Escande 1614562d4d59SThierry Escande error: 16150347a6abSThierry Escande usb_free_urb(dev->in_urb); 16160347a6abSThierry Escande usb_free_urb(dev->out_urb); 16170347a6abSThierry Escande usb_put_dev(dev->udev); 16180347a6abSThierry Escande 1619562d4d59SThierry Escande return rc; 1620562d4d59SThierry Escande } 1621562d4d59SThierry Escande 1622562d4d59SThierry Escande static void port100_disconnect(struct usb_interface *interface) 1623562d4d59SThierry Escande { 1624562d4d59SThierry Escande struct port100 *dev; 1625562d4d59SThierry Escande 1626562d4d59SThierry Escande dev = usb_get_intfdata(interface); 1627562d4d59SThierry Escande usb_set_intfdata(interface, NULL); 1628562d4d59SThierry Escande 1629562d4d59SThierry Escande nfc_digital_unregister_device(dev->nfc_digital_dev); 1630562d4d59SThierry Escande nfc_digital_free_device(dev->nfc_digital_dev); 1631562d4d59SThierry Escande 16320347a6abSThierry Escande usb_kill_urb(dev->in_urb); 16330347a6abSThierry Escande usb_kill_urb(dev->out_urb); 16340347a6abSThierry Escande 16350347a6abSThierry Escande usb_free_urb(dev->in_urb); 16360347a6abSThierry Escande usb_free_urb(dev->out_urb); 1637c36aeba8SAlexey Khoroshilov usb_put_dev(dev->udev); 16380347a6abSThierry Escande 16390347a6abSThierry Escande kfree(dev->cmd); 16400347a6abSThierry Escande 16413590ebc0SJoe Perches nfc_info(&interface->dev, "Sony Port-100 NFC device disconnected\n"); 1642562d4d59SThierry Escande } 1643562d4d59SThierry Escande 1644562d4d59SThierry Escande static struct usb_driver port100_driver = { 1645562d4d59SThierry Escande .name = "port100", 1646562d4d59SThierry Escande .probe = port100_probe, 1647562d4d59SThierry Escande .disconnect = port100_disconnect, 1648562d4d59SThierry Escande .id_table = port100_table, 1649562d4d59SThierry Escande }; 1650562d4d59SThierry Escande 1651562d4d59SThierry Escande module_usb_driver(port100_driver); 1652562d4d59SThierry Escande 1653562d4d59SThierry Escande MODULE_DESCRIPTION("NFC Port-100 series usb driver ver " VERSION); 1654562d4d59SThierry Escande MODULE_VERSION(VERSION); 1655562d4d59SThierry Escande MODULE_LICENSE("GPL"); 1656