From e5fd91f1ef340da553f7a79da9540c3db711c937 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 8 Sep 2015 01:01:14 -0300 Subject: Linux-libre 4.2-gnu --- drivers/nfc/Kconfig | 2 +- drivers/nfc/Makefile | 4 +- drivers/nfc/mei_phy.c | 295 +++++++++++++-- drivers/nfc/mei_phy.h | 38 +- drivers/nfc/microread/i2c.c | 3 - drivers/nfc/microread/mei.c | 2 +- drivers/nfc/nfcmrvl/Kconfig | 11 + drivers/nfc/nfcmrvl/Makefile | 3 + drivers/nfc/nfcmrvl/main.c | 134 +++++-- drivers/nfc/nfcmrvl/nfcmrvl.h | 60 +++- drivers/nfc/nfcmrvl/uart.c | 225 ++++++++++++ drivers/nfc/nfcmrvl/usb.c | 27 +- drivers/nfc/nxp-nci/Makefile | 2 - drivers/nfc/nxp-nci/i2c.c | 52 +++ drivers/nfc/pn544/i2c.c | 43 +-- drivers/nfc/pn544/mei.c | 2 +- drivers/nfc/st-nci/Kconfig | 23 ++ drivers/nfc/st-nci/Makefile | 9 + drivers/nfc/st-nci/core.c | 179 ++++++++++ drivers/nfc/st-nci/i2c.c | 385 ++++++++++++++++++++ drivers/nfc/st-nci/ndlc.c | 313 ++++++++++++++++ drivers/nfc/st-nci/ndlc.h | 60 ++++ drivers/nfc/st-nci/st-nci.h | 50 +++ drivers/nfc/st-nci/st-nci_se.c | 714 +++++++++++++++++++++++++++++++++++++ drivers/nfc/st-nci/st-nci_se.h | 61 ++++ drivers/nfc/st21nfcb/Kconfig | 22 -- drivers/nfc/st21nfcb/Makefile | 9 - drivers/nfc/st21nfcb/i2c.c | 388 -------------------- drivers/nfc/st21nfcb/ndlc.c | 300 ---------------- drivers/nfc/st21nfcb/ndlc.h | 59 --- drivers/nfc/st21nfcb/st21nfcb.c | 140 -------- drivers/nfc/st21nfcb/st21nfcb.h | 38 -- drivers/nfc/st21nfcb/st21nfcb_se.c | 713 ------------------------------------ drivers/nfc/st21nfcb/st21nfcb_se.h | 61 ---- drivers/nfc/trf7970a.c | 23 +- 35 files changed, 2608 insertions(+), 1842 deletions(-) create mode 100644 drivers/nfc/nfcmrvl/uart.c create mode 100644 drivers/nfc/st-nci/Kconfig create mode 100644 drivers/nfc/st-nci/Makefile create mode 100644 drivers/nfc/st-nci/core.c create mode 100644 drivers/nfc/st-nci/i2c.c create mode 100644 drivers/nfc/st-nci/ndlc.c create mode 100644 drivers/nfc/st-nci/ndlc.h create mode 100644 drivers/nfc/st-nci/st-nci.h create mode 100644 drivers/nfc/st-nci/st-nci_se.c create mode 100644 drivers/nfc/st-nci/st-nci_se.h delete mode 100644 drivers/nfc/st21nfcb/Kconfig delete mode 100644 drivers/nfc/st21nfcb/Makefile delete mode 100644 drivers/nfc/st21nfcb/i2c.c delete mode 100644 drivers/nfc/st21nfcb/ndlc.c delete mode 100644 drivers/nfc/st21nfcb/ndlc.h delete mode 100644 drivers/nfc/st21nfcb/st21nfcb.c delete mode 100644 drivers/nfc/st21nfcb/st21nfcb.h delete mode 100644 drivers/nfc/st21nfcb/st21nfcb_se.c delete mode 100644 drivers/nfc/st21nfcb/st21nfcb_se.h (limited to 'drivers/nfc') diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig index 107714e44..722673cb7 100644 --- a/drivers/nfc/Kconfig +++ b/drivers/nfc/Kconfig @@ -72,6 +72,6 @@ source "drivers/nfc/pn544/Kconfig" source "drivers/nfc/microread/Kconfig" source "drivers/nfc/nfcmrvl/Kconfig" source "drivers/nfc/st21nfca/Kconfig" -source "drivers/nfc/st21nfcb/Kconfig" +source "drivers/nfc/st-nci/Kconfig" source "drivers/nfc/nxp-nci/Kconfig" endmenu diff --git a/drivers/nfc/Makefile b/drivers/nfc/Makefile index a4292d790..368b6dfe7 100644 --- a/drivers/nfc/Makefile +++ b/drivers/nfc/Makefile @@ -12,7 +12,5 @@ obj-$(CONFIG_NFC_PORT100) += port100.o obj-$(CONFIG_NFC_MRVL) += nfcmrvl/ obj-$(CONFIG_NFC_TRF7970A) += trf7970a.o obj-$(CONFIG_NFC_ST21NFCA) += st21nfca/ -obj-$(CONFIG_NFC_ST21NFCB) += st21nfcb/ +obj-$(CONFIG_NFC_ST_NCI) += st-nci/ obj-$(CONFIG_NFC_NXP_NCI) += nxp-nci/ - -ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c index 11c7cbdad..2b77ccf77 100644 --- a/drivers/nfc/mei_phy.c +++ b/drivers/nfc/mei_phy.c @@ -32,6 +32,51 @@ struct mei_nfc_hdr { u16 data_size; } __packed; +struct mei_nfc_cmd { + struct mei_nfc_hdr hdr; + u8 sub_command; + u8 data[]; +} __packed; + +struct mei_nfc_reply { + struct mei_nfc_hdr hdr; + u8 sub_command; + u8 reply_status; + u8 data[]; +} __packed; + +struct mei_nfc_if_version { + u8 radio_version_sw[3]; + u8 reserved[3]; + u8 radio_version_hw[3]; + u8 i2c_addr; + u8 fw_ivn; + u8 vendor_id; + u8 radio_type; +} __packed; + +struct mei_nfc_connect { + u8 fw_ivn; + u8 vendor_id; +} __packed; + +struct mei_nfc_connect_resp { + u8 fw_ivn; + u8 vendor_id; + u16 me_major; + u16 me_minor; + u16 me_hotfix; + u16 me_build; +} __packed; + + +#define MEI_NFC_CMD_MAINTENANCE 0x00 +#define MEI_NFC_CMD_HCI_SEND 0x01 +#define MEI_NFC_CMD_HCI_RECV 0x02 + +#define MEI_NFC_SUBCMD_CONNECT 0x00 +#define MEI_NFC_SUBCMD_IF_VERSION 0x01 + #define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD) #define MEI_DUMP_SKB_IN(info, skb) \ @@ -45,51 +90,169 @@ do { \ do { \ pr_debug("%s:\n", info); \ print_hex_dump_debug("mei out: ", DUMP_PREFIX_OFFSET, \ - 16, 1, (skb)->data, (skb)->len, false); \ + 16, 1, (skb)->data, (skb)->len, false); \ } while (0) -int nfc_mei_phy_enable(void *phy_id) +#define MEI_DUMP_NFC_HDR(info, _hdr) \ +do { \ + pr_debug("%s:\n", info); \ + pr_debug("cmd=%02d status=%d req_id=%d rsvd=%d size=%d\n", \ + (_hdr)->cmd, (_hdr)->status, (_hdr)->req_id, \ + (_hdr)->reserved, (_hdr)->data_size); \ +} while (0) + +static int mei_nfc_if_version(struct nfc_mei_phy *phy) { - int r; - struct nfc_mei_phy *phy = phy_id; + + struct mei_nfc_cmd cmd; + struct mei_nfc_reply *reply = NULL; + struct mei_nfc_if_version *version; + size_t if_version_length; + int bytes_recv, r; pr_info("%s\n", __func__); - if (phy->powered == 1) - return 0; + memset(&cmd, 0, sizeof(struct mei_nfc_cmd)); + cmd.hdr.cmd = MEI_NFC_CMD_MAINTENANCE; + cmd.hdr.data_size = 1; + cmd.sub_command = MEI_NFC_SUBCMD_IF_VERSION; - r = mei_cl_enable_device(phy->device); + MEI_DUMP_NFC_HDR("version", &cmd.hdr); + r = mei_cl_send(phy->device, (u8 *)&cmd, sizeof(struct mei_nfc_cmd)); if (r < 0) { - pr_err("Could not enable device\n"); + pr_err("Could not send IF version cmd\n"); return r; } - r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy); - if (r) { - pr_err("Event cb registration failed\n"); - mei_cl_disable_device(phy->device); - phy->powered = 0; + /* to be sure on the stack we alloc memory */ + if_version_length = sizeof(struct mei_nfc_reply) + + sizeof(struct mei_nfc_if_version); - return r; + reply = kzalloc(if_version_length, GFP_KERNEL); + if (!reply) + return -ENOMEM; + + bytes_recv = mei_cl_recv(phy->device, (u8 *)reply, if_version_length); + if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) { + pr_err("Could not read IF version\n"); + r = -EIO; + goto err; } - phy->powered = 1; + version = (struct mei_nfc_if_version *)reply->data; - return 0; + phy->fw_ivn = version->fw_ivn; + phy->vendor_id = version->vendor_id; + phy->radio_type = version->radio_type; + +err: + kfree(reply); + return r; } -EXPORT_SYMBOL_GPL(nfc_mei_phy_enable); -void nfc_mei_phy_disable(void *phy_id) +static int mei_nfc_connect(struct nfc_mei_phy *phy) { - struct nfc_mei_phy *phy = phy_id; + struct mei_nfc_cmd *cmd, *reply; + struct mei_nfc_connect *connect; + struct mei_nfc_connect_resp *connect_resp; + size_t connect_length, connect_resp_length; + int bytes_recv, r; pr_info("%s\n", __func__); - mei_cl_disable_device(phy->device); + connect_length = sizeof(struct mei_nfc_cmd) + + sizeof(struct mei_nfc_connect); - phy->powered = 0; + connect_resp_length = sizeof(struct mei_nfc_cmd) + + sizeof(struct mei_nfc_connect_resp); + + cmd = kzalloc(connect_length, GFP_KERNEL); + if (!cmd) + return -ENOMEM; + connect = (struct mei_nfc_connect *)cmd->data; + + reply = kzalloc(connect_resp_length, GFP_KERNEL); + if (!reply) { + kfree(cmd); + return -ENOMEM; + } + + connect_resp = (struct mei_nfc_connect_resp *)reply->data; + + cmd->hdr.cmd = MEI_NFC_CMD_MAINTENANCE; + cmd->hdr.data_size = 3; + cmd->sub_command = MEI_NFC_SUBCMD_CONNECT; + connect->fw_ivn = phy->fw_ivn; + connect->vendor_id = phy->vendor_id; + + MEI_DUMP_NFC_HDR("connect request", &cmd->hdr); + r = mei_cl_send(phy->device, (u8 *)cmd, connect_length); + if (r < 0) { + pr_err("Could not send connect cmd %d\n", r); + goto err; + } + + bytes_recv = mei_cl_recv(phy->device, (u8 *)reply, connect_resp_length); + if (bytes_recv < 0) { + r = bytes_recv; + pr_err("Could not read connect response %d\n", r); + goto err; + } + + MEI_DUMP_NFC_HDR("connect reply", &reply->hdr); + + pr_info("IVN 0x%x Vendor ID 0x%x\n", + connect_resp->fw_ivn, connect_resp->vendor_id); + + pr_info("ME FW %d.%d.%d.%d\n", + connect_resp->me_major, connect_resp->me_minor, + connect_resp->me_hotfix, connect_resp->me_build); + + r = 0; + +err: + kfree(reply); + kfree(cmd); + + return r; +} + +static int mei_nfc_send(struct nfc_mei_phy *phy, u8 *buf, size_t length) +{ + struct mei_nfc_hdr *hdr; + u8 *mei_buf; + int err; + + err = -ENOMEM; + mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL); + if (!mei_buf) + goto out; + + hdr = (struct mei_nfc_hdr *)mei_buf; + hdr->cmd = MEI_NFC_CMD_HCI_SEND; + hdr->status = 0; + hdr->req_id = phy->req_id; + hdr->reserved = 0; + hdr->data_size = length; + + MEI_DUMP_NFC_HDR("send", hdr); + + memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length); + err = mei_cl_send(phy->device, mei_buf, length + MEI_NFC_HEADER_SIZE); + if (err < 0) + goto out; + + if (!wait_event_interruptible_timeout(phy->send_wq, + phy->recv_req_id == phy->req_id, HZ)) { + pr_err("NFC MEI command timeout\n"); + err = -ETIME; + } else { + phy->req_id++; + } +out: + kfree(mei_buf); + return err; } -EXPORT_SYMBOL_GPL(nfc_mei_phy_disable); /* * Writing a frame must not return the number of written bytes. @@ -103,14 +266,38 @@ static int nfc_mei_phy_write(void *phy_id, struct sk_buff *skb) MEI_DUMP_SKB_OUT("mei frame sent", skb); - r = mei_cl_send(phy->device, skb->data, skb->len); + r = mei_nfc_send(phy, skb->data, skb->len); if (r > 0) r = 0; return r; } -void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context) +static int mei_nfc_recv(struct nfc_mei_phy *phy, u8 *buf, size_t length) +{ + struct mei_nfc_hdr *hdr; + int received_length; + + received_length = mei_cl_recv(phy->device, buf, length); + if (received_length < 0) + return received_length; + + hdr = (struct mei_nfc_hdr *) buf; + + MEI_DUMP_NFC_HDR("receive", hdr); + if (hdr->cmd == MEI_NFC_CMD_HCI_SEND) { + phy->recv_req_id = hdr->req_id; + wake_up(&phy->send_wq); + + return 0; + } + + return received_length; +} + + +static void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, + void *context) { struct nfc_mei_phy *phy = context; @@ -125,7 +312,7 @@ void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context) if (!skb) return; - reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ); + reply_size = mei_nfc_recv(phy, skb->data, MEI_NFC_MAX_READ); if (reply_size < MEI_NFC_HEADER_SIZE) { kfree_skb(skb); return; @@ -139,7 +326,61 @@ void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context) nfc_hci_recv_frame(phy->hdev, skb); } } -EXPORT_SYMBOL_GPL(nfc_mei_event_cb); + +static int nfc_mei_phy_enable(void *phy_id) +{ + int r; + struct nfc_mei_phy *phy = phy_id; + + pr_info("%s\n", __func__); + + if (phy->powered == 1) + return 0; + + r = mei_cl_enable_device(phy->device); + if (r < 0) { + pr_err("Could not enable device %d\n", r); + return r; + } + + r = mei_nfc_if_version(phy); + if (r < 0) { + pr_err("Could not enable device %d\n", r); + goto err; + } + + r = mei_nfc_connect(phy); + if (r < 0) { + pr_err("Could not connect to device %d\n", r); + goto err; + } + + r = mei_cl_register_event_cb(phy->device, nfc_mei_event_cb, phy); + if (r) { + pr_err("Event cb registration failed %d\n", r); + goto err; + } + + phy->powered = 1; + + return 0; + +err: + phy->powered = 0; + mei_cl_disable_device(phy->device); + return r; +} + +static void nfc_mei_phy_disable(void *phy_id) +{ + struct nfc_mei_phy *phy = phy_id; + + pr_info("%s\n", __func__); + + mei_cl_disable_device(phy->device); + + phy->powered = 0; +} struct nfc_phy_ops mei_phy_ops = { .write = nfc_mei_phy_write, @@ -157,6 +398,7 @@ struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device) return NULL; phy->device = device; + init_waitqueue_head(&phy->send_wq); mei_cl_set_drvdata(device, phy); return phy; @@ -165,6 +407,7 @@ EXPORT_SYMBOL_GPL(nfc_mei_phy_alloc); void nfc_mei_phy_free(struct nfc_mei_phy *phy) { + mei_cl_disable_device(phy->device); kfree(phy); } EXPORT_SYMBOL_GPL(nfc_mei_phy_free); diff --git a/drivers/nfc/mei_phy.h b/drivers/nfc/mei_phy.h index d669900f8..fbfa3e617 100644 --- a/drivers/nfc/mei_phy.h +++ b/drivers/nfc/mei_phy.h @@ -3,27 +3,49 @@ #include #include +#include +#define MEI_NFC_UUID UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, \ + 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c) #define MEI_NFC_HEADER_SIZE 10 #define MEI_NFC_MAX_HCI_PAYLOAD 300 +/** + * struct nfc_mei_phy + * + * @device: mei device + * @hdev: nfc hci device + + * @send_wq: send completion wait queue + * @fw_ivn: NFC Interface Version Number + * @vendor_id: NFC manufacturer ID + * @radio_type: NFC radio type + * @reserved: reserved for alignment + * @req_id: message counter + * @recv_req_id: reception message counter + * @powered: the device is in powered state + * @hard_fault: < 0 if hardware error occurred + * and prevents normal operation. + */ struct nfc_mei_phy { struct mei_cl_device *device; struct nfc_hci_dev *hdev; - int powered; + wait_queue_head_t send_wq; + u8 fw_ivn; + u8 vendor_id; + u8 radio_type; + u8 reserved; + + u16 req_id; + u16 recv_req_id; - int hard_fault; /* - * < 0 if hardware error occured - * and prevents normal operation. - */ + int powered; + int hard_fault; }; extern struct nfc_phy_ops mei_phy_ops; -int nfc_mei_phy_enable(void *phy_id); -void nfc_mei_phy_disable(void *phy_id); -void nfc_mei_event_cb(struct mei_cl_device *device, u32 events, void *context); struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device); void nfc_mei_phy_free(struct nfc_mei_phy *phy); diff --git a/drivers/nfc/microread/i2c.c b/drivers/nfc/microread/i2c.c index 661e2c814..daf352597 100644 --- a/drivers/nfc/microread/i2c.c +++ b/drivers/nfc/microread/i2c.c @@ -211,7 +211,6 @@ flush: static irqreturn_t microread_i2c_irq_thread_fn(int irq, void *phy_id) { struct microread_i2c_phy *phy = phy_id; - struct i2c_client *client; struct sk_buff *skb = NULL; int r; @@ -220,8 +219,6 @@ static irqreturn_t microread_i2c_irq_thread_fn(int irq, void *phy_id) return IRQ_NONE; } - client = phy->i2c_dev; - if (phy->hard_fault != 0) return IRQ_HANDLED; diff --git a/drivers/nfc/microread/mei.c b/drivers/nfc/microread/mei.c index 2d1395be6..f9f5fc97c 100644 --- a/drivers/nfc/microread/mei.c +++ b/drivers/nfc/microread/mei.c @@ -67,7 +67,7 @@ static int microread_mei_remove(struct mei_cl_device *device) } static struct mei_cl_device_id microread_mei_tbl[] = { - { MICROREAD_DRIVER_NAME }, + { MICROREAD_DRIVER_NAME, MEI_NFC_UUID}, /* required last entry */ { } diff --git a/drivers/nfc/nfcmrvl/Kconfig b/drivers/nfc/nfcmrvl/Kconfig index 5e18afd9a..796be2411 100644 --- a/drivers/nfc/nfcmrvl/Kconfig +++ b/drivers/nfc/nfcmrvl/Kconfig @@ -21,3 +21,14 @@ config NFC_MRVL_USB Say Y here to compile support for Marvell NFC-over-USB driver into the kernel or say M to compile it as module. + +config NFC_MRVL_UART + tristate "Marvell NFC-over-UART driver" + depends on NFC_MRVL && NFC_NCI_UART + help + Marvell NFC-over-UART driver. + + This driver provides support for Marvell NFC-over-UART devices + + Say Y here to compile support for Marvell NFC-over-UART driver + into the kernel or say M to compile it as module. diff --git a/drivers/nfc/nfcmrvl/Makefile b/drivers/nfc/nfcmrvl/Makefile index 97a0de72d..775196274 100644 --- a/drivers/nfc/nfcmrvl/Makefile +++ b/drivers/nfc/nfcmrvl/Makefile @@ -7,3 +7,6 @@ obj-$(CONFIG_NFC_MRVL) += nfcmrvl.o nfcmrvl_usb-y += usb.o obj-$(CONFIG_NFC_MRVL_USB) += nfcmrvl_usb.o + +nfcmrvl_uart-y += uart.o +obj-$(CONFIG_NFC_MRVL_UART) += nfcmrvl_uart.o diff --git a/drivers/nfc/nfcmrvl/main.c b/drivers/nfc/nfcmrvl/main.c index ad4933cef..4a8866d62 100644 --- a/drivers/nfc/nfcmrvl/main.c +++ b/drivers/nfc/nfcmrvl/main.c @@ -17,6 +17,9 @@ */ #include +#include +#include +#include #include #include #include @@ -63,20 +66,25 @@ static int nfcmrvl_nci_send(struct nci_dev *ndev, struct sk_buff *skb) if (!test_bit(NFCMRVL_NCI_RUNNING, &priv->flags)) return -EBUSY; + if (priv->config.hci_muxed) { + unsigned char *hdr; + unsigned char len = skb->len; + + hdr = (char *) skb_push(skb, NFCMRVL_HCI_EVENT_HEADER_SIZE); + hdr[0] = NFCMRVL_HCI_COMMAND_CODE; + hdr[1] = NFCMRVL_HCI_OGF; + hdr[2] = NFCMRVL_HCI_OCF; + hdr[3] = len; + } + return priv->if_ops->nci_send(priv, skb); } static int nfcmrvl_nci_setup(struct nci_dev *ndev) { - __u8 val; - - val = NFCMRVL_GPIO_PIN_NFC_NOT_ALLOWED; - nci_set_config(ndev, NFCMRVL_NOT_ALLOWED_ID, 1, &val); - val = NFCMRVL_GPIO_PIN_NFC_ACTIVE; - nci_set_config(ndev, NFCMRVL_ACTIVE_ID, 1, &val); - val = NFCMRVL_EXT_COEX_ENABLE; - nci_set_config(ndev, NFCMRVL_EXT_COEX_ID, 1, &val); + __u8 val = 1; + nci_set_config(ndev, NFCMRVL_PB_BAIL_OUT, 1, &val); return 0; } @@ -88,11 +96,13 @@ static struct nci_ops nfcmrvl_nci_ops = { }; struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, - struct nfcmrvl_if_ops *ops, - struct device *dev) + struct nfcmrvl_if_ops *ops, + struct device *dev, + struct nfcmrvl_platform_data *pdata) { struct nfcmrvl_private *priv; int rc; + int headroom = 0; u32 protocols; priv = kzalloc(sizeof(*priv), GFP_KERNEL); @@ -103,13 +113,30 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, priv->if_ops = ops; priv->dev = dev; + memcpy(&priv->config, pdata, sizeof(*pdata)); + + if (priv->config.reset_n_io) { + rc = devm_gpio_request_one(dev, + priv->config.reset_n_io, + GPIOF_OUT_INIT_LOW, + "nfcmrvl_reset_n"); + if (rc < 0) + nfc_err(dev, "failed to request reset_n io\n"); + } + + if (priv->config.hci_muxed) + headroom = NFCMRVL_HCI_EVENT_HEADER_SIZE; + protocols = NFC_PROTO_JEWEL_MASK - | NFC_PROTO_MIFARE_MASK | NFC_PROTO_FELICA_MASK + | NFC_PROTO_MIFARE_MASK + | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK | NFC_PROTO_ISO14443_B_MASK + | NFC_PROTO_ISO15693_MASK | NFC_PROTO_NFC_DEP_MASK; - priv->ndev = nci_allocate_device(&nfcmrvl_nci_ops, protocols, 0, 0); + priv->ndev = nci_allocate_device(&nfcmrvl_nci_ops, protocols, + headroom, 0); if (!priv->ndev) { nfc_err(dev, "nci_allocate_device failed\n"); rc = -ENOMEM; @@ -118,6 +145,8 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, nci_set_drvdata(priv->ndev, priv); + nfcmrvl_chip_reset(priv); + rc = nci_register_device(priv->ndev); if (rc) { nfc_err(dev, "nci_register_device failed %d\n", rc); @@ -144,21 +173,84 @@ void nfcmrvl_nci_unregister_dev(struct nfcmrvl_private *priv) } EXPORT_SYMBOL_GPL(nfcmrvl_nci_unregister_dev); -int nfcmrvl_nci_recv_frame(struct nfcmrvl_private *priv, void *data, int count) +int nfcmrvl_nci_recv_frame(struct nfcmrvl_private *priv, struct sk_buff *skb) { - struct sk_buff *skb; - - skb = nci_skb_alloc(priv->ndev, count, GFP_ATOMIC); - if (!skb) - return -ENOMEM; + if (priv->config.hci_muxed) { + if (skb->data[0] == NFCMRVL_HCI_EVENT_CODE && + skb->data[1] == NFCMRVL_HCI_NFC_EVENT_CODE) { + /* Data packet, let's extract NCI payload */ + skb_pull(skb, NFCMRVL_HCI_EVENT_HEADER_SIZE); + } else { + /* Skip this packet */ + kfree_skb(skb); + return 0; + } + } - memcpy(skb_put(skb, count), data, count); - nci_recv_frame(priv->ndev, skb); + if (test_bit(NFCMRVL_NCI_RUNNING, &priv->flags)) + nci_recv_frame(priv->ndev, skb); + else { + /* Drop this packet since nobody wants it */ + kfree_skb(skb); + return 0; + } - return count; + return 0; } EXPORT_SYMBOL_GPL(nfcmrvl_nci_recv_frame); +void nfcmrvl_chip_reset(struct nfcmrvl_private *priv) +{ + /* + * This function does not take care if someone is using the device. + * To be improved. + */ + + if (priv->config.reset_n_io) { + nfc_info(priv->dev, "reset the chip\n"); + gpio_set_value(priv->config.reset_n_io, 0); + usleep_range(5000, 10000); + gpio_set_value(priv->config.reset_n_io, 1); + } else + nfc_info(priv->dev, "no reset available on this interface\n"); +} + +#ifdef CONFIG_OF + +int nfcmrvl_parse_dt(struct device_node *node, + struct nfcmrvl_platform_data *pdata) +{ + int reset_n_io; + + reset_n_io = of_get_named_gpio(node, "reset-n-io", 0); + if (reset_n_io < 0) { + pr_info("no reset-n-io config\n"); + reset_n_io = 0; + } else if (!gpio_is_valid(reset_n_io)) { + pr_err("invalid reset-n-io GPIO\n"); + return reset_n_io; + } + pdata->reset_n_io = reset_n_io; + + if (of_find_property(node, "hci-muxed", NULL)) + pdata->hci_muxed = 1; + else + pdata->hci_muxed = 0; + + return 0; +} + +#else + +int nfcmrvl_parse_dt(struct device_node *node, + struct nfcmrvl_platform_data *pdata) +{ + return -ENODEV; +} + +#endif +EXPORT_SYMBOL_GPL(nfcmrvl_parse_dt); + MODULE_AUTHOR("Marvell International Ltd."); MODULE_DESCRIPTION("Marvell NFC driver ver " VERSION); MODULE_VERSION(VERSION); diff --git a/drivers/nfc/nfcmrvl/nfcmrvl.h b/drivers/nfc/nfcmrvl/nfcmrvl.h index 54c4a956b..e5a7e5464 100644 --- a/drivers/nfc/nfcmrvl/nfcmrvl.h +++ b/drivers/nfc/nfcmrvl/nfcmrvl.h @@ -16,6 +16,11 @@ * this warranty disclaimer. **/ +#ifndef _NFCMRVL_H_ +#define _NFCMRVL_H_ + +#include + /* Define private flags: */ #define NFCMRVL_NCI_RUNNING 1 @@ -27,11 +32,49 @@ #define NFCMRVL_GPIO_PIN_NFC_ACTIVE 0xB #define NFCMRVL_NCI_MAX_EVENT_SIZE 260 +/* +** NCI FW Parmaters +*/ + +#define NFCMRVL_PB_BAIL_OUT 0x11 + +/* +** HCI defines +*/ + +#define NFCMRVL_HCI_EVENT_HEADER_SIZE 0x04 +#define NFCMRVL_HCI_EVENT_CODE 0x04 +#define NFCMRVL_HCI_NFC_EVENT_CODE 0xFF +#define NFCMRVL_HCI_COMMAND_CODE 0x01 +#define NFCMRVL_HCI_OGF 0x81 +#define NFCMRVL_HCI_OCF 0xFE + +enum nfcmrvl_phy { + NFCMRVL_PHY_USB = 0, + NFCMRVL_PHY_UART = 1, +}; + + struct nfcmrvl_private { - struct nci_dev *ndev; + unsigned long flags; + + /* Platform configuration */ + struct nfcmrvl_platform_data config; + + struct nci_dev *ndev; + + /* + ** PHY related information + */ + + /* PHY driver context */ void *drv_data; + /* PHY device */ struct device *dev; + /* PHY type */ + enum nfcmrvl_phy phy; + /* Low level driver ops */ struct nfcmrvl_if_ops *if_ops; }; @@ -42,7 +85,16 @@ struct nfcmrvl_if_ops { }; void nfcmrvl_nci_unregister_dev(struct nfcmrvl_private *priv); -int nfcmrvl_nci_recv_frame(struct nfcmrvl_private *priv, void *data, int count); +int nfcmrvl_nci_recv_frame(struct nfcmrvl_private *priv, struct sk_buff *skb); struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, - struct nfcmrvl_if_ops *ops, - struct device *dev); + struct nfcmrvl_if_ops *ops, + struct device *dev, + struct nfcmrvl_platform_data *pdata); + + +void nfcmrvl_chip_reset(struct nfcmrvl_private *priv); + +int nfcmrvl_parse_dt(struct device_node *node, + struct nfcmrvl_platform_data *pdata); + +#endif diff --git a/drivers/nfc/nfcmrvl/uart.c b/drivers/nfc/nfcmrvl/uart.c new file mode 100644 index 000000000..61442d652 --- /dev/null +++ b/drivers/nfc/nfcmrvl/uart.c @@ -0,0 +1,225 @@ +/** + * Marvell NFC-over-UART driver + * + * Copyright (C) 2015, Marvell International Ltd. + * + * This software file (the "File") is distributed by Marvell International + * Ltd. under the terms of the GNU General Public License Version 2, June 1991 + * (the "License"). You may use, redistribute and/or modify this File in + * accordance with the terms and conditions of the License, a copy of which + * is available on the worldwide web at + * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. + * + * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE + * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE + * ARE EXPRESSLY DISCLAIMED. The License provides additional details about + * this warranty disclaimer. + */ + +#include +#include +#include +#include +#include +#include "nfcmrvl.h" + +static unsigned int hci_muxed; +static unsigned int flow_control; +static unsigned int break_control; +static unsigned int reset_n_io; + +/* +** NFCMRVL NCI OPS +*/ + +static int nfcmrvl_uart_nci_open(struct nfcmrvl_private *priv) +{ + return 0; +} + +static int nfcmrvl_uart_nci_close(struct nfcmrvl_private *priv) +{ + return 0; +} + +static int nfcmrvl_uart_nci_send(struct nfcmrvl_private *priv, + struct sk_buff *skb) +{ + struct nci_uart *nu = priv->drv_data; + + return nu->ops.send(nu, skb); +} + +static struct nfcmrvl_if_ops uart_ops = { + .nci_open = nfcmrvl_uart_nci_open, + .nci_close = nfcmrvl_uart_nci_close, + .nci_send = nfcmrvl_uart_nci_send, +}; + +#ifdef CONFIG_OF + +static int nfcmrvl_uart_parse_dt(struct device_node *node, + struct nfcmrvl_platform_data *pdata) +{ + struct device_node *matched_node; + int ret; + + matched_node = of_find_compatible_node(node, NULL, "mrvl,nfc-uart"); + if (!matched_node) + return -ENODEV; + + ret = nfcmrvl_parse_dt(matched_node, pdata); + if (ret < 0) { + pr_err("Failed to get generic entries\n"); + return ret; + } + + if (of_find_property(matched_node, "flow-control", NULL)) + pdata->flow_control = 1; + else + pdata->flow_control = 0; + + if (of_find_property(matched_node, "break-control", NULL)) + pdata->break_control = 1; + else + pdata->break_control = 0; + + return 0; +} + +#else + +static int nfcmrvl_uart_parse_dt(struct device_node *node, + struct nfcmrvl_platform_data *pdata) +{ + return -ENODEV; +} + +#endif + +/* +** NCI UART OPS +*/ + +static int nfcmrvl_nci_uart_open(struct nci_uart *nu) +{ + struct nfcmrvl_private *priv; + struct nfcmrvl_platform_data *pdata = NULL; + struct nfcmrvl_platform_data config; + + /* + * Platform data cannot be used here since usually it is already used + * by low level serial driver. We can try to retrieve serial device + * and check if DT entries were added. + */ + + if (nu->tty->dev->parent && nu->tty->dev->parent->of_node) + if (nfcmrvl_uart_parse_dt(nu->tty->dev->parent->of_node, + &config) == 0) + pdata = &config; + + if (!pdata) { + pr_info("No platform data / DT -> fallback to module params\n"); + config.hci_muxed = hci_muxed; + config.reset_n_io = reset_n_io; + config.flow_control = flow_control; + config.break_control = break_control; + pdata = &config; + } + + priv = nfcmrvl_nci_register_dev(nu, &uart_ops, nu->tty->dev, pdata); + if (IS_ERR(priv)) + return PTR_ERR(priv); + + priv->phy = NFCMRVL_PHY_UART; + + nu->drv_data = priv; + nu->ndev = priv->ndev; + + /* Set BREAK */ + if (priv->config.break_control && nu->tty->ops->break_ctl) + nu->tty->ops->break_ctl(nu->tty, -1); + + return 0; +} + +static void nfcmrvl_nci_uart_close(struct nci_uart *nu) +{ + nfcmrvl_nci_unregister_dev((struct nfcmrvl_private *)nu->drv_data); +} + +static int nfcmrvl_nci_uart_recv(struct nci_uart *nu, struct sk_buff *skb) +{ + return nfcmrvl_nci_recv_frame((struct nfcmrvl_private *)nu->drv_data, + skb); +} + +static void nfcmrvl_nci_uart_tx_start(struct nci_uart *nu) +{ + struct nfcmrvl_private *priv = (struct nfcmrvl_private *)nu->drv_data; + + /* Remove BREAK to wake up the NFCC */ + if (priv->config.break_control && nu->tty->ops->break_ctl) { + nu->tty->ops->break_ctl(nu->tty, 0); + usleep_range(3000, 5000); + } +} + +static void nfcmrvl_nci_uart_tx_done(struct nci_uart *nu) +{ + struct nfcmrvl_private *priv = (struct nfcmrvl_private *)nu->drv_data; + + /* + ** To ensure that if the NFCC goes in DEEP SLEEP sate we can wake him + ** up. we set BREAK. Once we will be ready to send again we will remove + ** it. + */ + if (priv->config.break_control && nu->tty->ops->break_ctl) + nu->tty->ops->break_ctl(nu->tty, -1); +} + +static struct nci_uart nfcmrvl_nci_uart = { + .owner = THIS_MODULE, + .name = "nfcmrvl_uart", + .driver = NCI_UART_DRIVER_MARVELL, + .ops = { + .open = nfcmrvl_nci_uart_open, + .close = nfcmrvl_nci_uart_close, + .recv = nfcmrvl_nci_uart_recv, + .tx_start = nfcmrvl_nci_uart_tx_start, + .tx_done = nfcmrvl_nci_uart_tx_done, + } +}; + +/* +** Module init +*/ + +static int nfcmrvl_uart_init_module(void) +{ + return nci_uart_register(&nfcmrvl_nci_uart); +} + +static void nfcmrvl_uart_exit_module(void) +{ + nci_uart_unregister(&nfcmrvl_nci_uart); +} + +module_init(nfcmrvl_uart_init_module); +module_exit(nfcmrvl_uart_exit_module); + +MODULE_AUTHOR("Marvell International Ltd."); +MODULE_DESCRIPTION("Marvell NFC-over-UART"); +MODULE_LICENSE("GPL v2"); + +module_param(flow_control, uint, 0); +MODULE_PARM_DESC(flow_control, "Tell if UART needs flow control at init."); + +module_param(break_control, uint, 0); +MODULE_PARM_DESC(break_control, "Tell if UART driver must drive break signal."); + +module_param(hci_muxed, uint, 0); +MODULE_PARM_DESC(hci_muxed, "Tell if transport is muxed in HCI one."); + +module_param(reset_n_io, uint, 0); +MODULE_PARM_DESC(reset_n_io, "GPIO that is wired to RESET_N signal."); diff --git a/drivers/nfc/nfcmrvl/usb.c b/drivers/nfc/nfcmrvl/usb.c index 6cf15c1a2..7d1fe436c 100644 --- a/drivers/nfc/nfcmrvl/usb.c +++ b/drivers/nfc/nfcmrvl/usb.c @@ -26,7 +26,8 @@ #define VERSION "1.0" static struct usb_device_id nfcmrvl_table[] = { - { USB_DEVICE_INTERFACE_CLASS(0x1286, 0x2046, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x1286, 0x2046, + USB_CLASS_VENDOR_SPEC, 4, 1) }, { } /* Terminating entry */ }; @@ -69,18 +70,27 @@ static int nfcmrvl_inc_tx(struct nfcmrvl_usb_drv_data *drv_data) static void nfcmrvl_bulk_complete(struct urb *urb) { struct nfcmrvl_usb_drv_data *drv_data = urb->context; + struct sk_buff *skb; int err; - dev_dbg(&drv_data->udev->dev, "urb %p status %d count %d", + dev_dbg(&drv_data->udev->dev, "urb %p status %d count %d\n", urb, urb->status, urb->actual_length); if (!test_bit(NFCMRVL_NCI_RUNNING, &drv_data->flags)) return; if (!urb->status) { - if (nfcmrvl_nci_recv_frame(drv_data->priv, urb->transfer_buffer, - urb->actual_length) < 0) - nfc_err(&drv_data->udev->dev, "corrupted Rx packet\n"); + skb = nci_skb_alloc(drv_data->priv->ndev, urb->actual_length, + GFP_ATOMIC); + if (!skb) { + nfc_err(&drv_data->udev->dev, "failed to alloc mem\n"); + } else { + memcpy(skb_put(skb, urb->actual_length), + urb->transfer_buffer, urb->actual_length); + if (nfcmrvl_nci_recv_frame(drv_data->priv, skb) < 0) + nfc_err(&drv_data->udev->dev, + "corrupted Rx packet\n"); + } } if (!test_bit(NFCMRVL_USB_BULK_RUNNING, &drv_data->flags)) @@ -292,6 +302,10 @@ static int nfcmrvl_probe(struct usb_interface *intf, struct nfcmrvl_private *priv; int i; struct usb_device *udev = interface_to_usbdev(intf); + struct nfcmrvl_platform_data config; + + /* No configuration for USB */ + memset(&config, 0, sizeof(config)); nfc_info(&udev->dev, "intf %p id %p\n", intf, id); @@ -329,11 +343,12 @@ static int nfcmrvl_probe(struct usb_interface *intf, init_usb_anchor(&drv_data->deferred); priv = nfcmrvl_nci_register_dev(drv_data, &usb_ops, - &drv_data->udev->dev); + &drv_data->udev->dev, &config); if (IS_ERR(priv)) return PTR_ERR(priv); drv_data->priv = priv; + drv_data->priv->phy = NFCMRVL_PHY_USB; priv->dev = &drv_data->udev->dev; usb_set_intfdata(intf, drv_data); diff --git a/drivers/nfc/nxp-nci/Makefile b/drivers/nfc/nxp-nci/Makefile index c008be30b..c9ec7869d 100644 --- a/drivers/nfc/nxp-nci/Makefile +++ b/drivers/nfc/nxp-nci/Makefile @@ -7,5 +7,3 @@ nxp-nci_i2c-objs = i2c.o obj-$(CONFIG_NFC_NXP_NCI) += nxp-nci.o obj-$(CONFIG_NFC_NXP_NCI_I2C) += nxp-nci_i2c.o - -ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG diff --git a/drivers/nfc/nxp-nci/i2c.c b/drivers/nfc/nxp-nci/i2c.c index 17bd67dbe..2f77f1d03 100644 --- a/drivers/nfc/nxp-nci/i2c.c +++ b/drivers/nfc/nxp-nci/i2c.c @@ -2,8 +2,10 @@ * I2C link layer for the NXP NCI driver * * Copyright (C) 2014 NXP Semiconductors All rights reserved. + * Copyright (C) 2012-2015 Intel Corporation. All rights reserved. * * Authors: Clément Perrochaud + * Authors: Oleg Zhurakivskyy * * Derived from PN544 device driver: * Copyright (C) 2012 Intel Corporation. All rights reserved. @@ -23,12 +25,14 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include #include #include #include #include #include #include +#include #include #include #include @@ -48,6 +52,7 @@ struct nxp_nci_i2c_phy { unsigned int gpio_en; unsigned int gpio_fw; + unsigned int gpio_irq; int hard_fault; /* * < 0 if hardware error occurred (e.g. i2c err) @@ -308,6 +313,37 @@ static int nxp_nci_i2c_parse_devtree(struct i2c_client *client) #endif +static int nxp_nci_i2c_acpi_config(struct nxp_nci_i2c_phy *phy) +{ + struct i2c_client *client = phy->i2c_dev; + struct gpio_desc *gpiod_en, *gpiod_fw, *gpiod_irq; + + gpiod_en = devm_gpiod_get_index(&client->dev, NULL, 2); + gpiod_fw = devm_gpiod_get_index(&client->dev, NULL, 1); + gpiod_irq = devm_gpiod_get_index(&client->dev, NULL, 0); + + if (IS_ERR(gpiod_en) || IS_ERR(gpiod_fw) || IS_ERR(gpiod_irq)) { + nfc_err(&client->dev, "No GPIOs\n"); + return -EINVAL; + } + + gpiod_direction_output(gpiod_en, 0); + gpiod_direction_output(gpiod_fw, 0); + gpiod_direction_input(gpiod_irq); + + client->irq = gpiod_to_irq(gpiod_irq); + if (client->irq < 0) { + nfc_err(&client->dev, "No IRQ\n"); + return -EINVAL; + } + + phy->gpio_en = desc_to_gpio(gpiod_en); + phy->gpio_fw = desc_to_gpio(gpiod_fw); + phy->gpio_irq = desc_to_gpio(gpiod_irq); + + return 0; +} + static int nxp_nci_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -343,6 +379,11 @@ static int nxp_nci_i2c_probe(struct i2c_client *client, phy->gpio_en = pdata->gpio_en; phy->gpio_fw = pdata->gpio_fw; client->irq = pdata->irq; + } else if (ACPI_HANDLE(&client->dev)) { + r = nxp_nci_i2c_acpi_config(phy); + if (r < 0) + goto probe_exit; + goto nci_probe; } else { nfc_err(&client->dev, "No platform data\n"); r = -EINVAL; @@ -359,6 +400,7 @@ static int nxp_nci_i2c_probe(struct i2c_client *client, if (r < 0) goto probe_exit; +nci_probe: r = nxp_nci_probe(phy, &client->dev, &i2c_phy_ops, NXP_NCI_I2C_MAX_PAYLOAD, &phy->ndev); if (r < 0) @@ -397,10 +439,19 @@ static const struct of_device_id of_nxp_nci_i2c_match[] = { }; MODULE_DEVICE_TABLE(of, of_nxp_nci_i2c_match); +#ifdef CONFIG_ACPI +static struct acpi_device_id acpi_id[] = { + { "NXP7471" }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, acpi_id); +#endif + static struct i2c_driver nxp_nci_i2c_driver = { .driver = { .name = NXP_NCI_I2C_DRIVER_NAME, .owner = THIS_MODULE, + .acpi_match_table = ACPI_PTR(acpi_id), .of_match_table = of_match_ptr(of_nxp_nci_i2c_match), }, .probe = nxp_nci_i2c_probe, @@ -413,3 +464,4 @@ module_i2c_driver(nxp_nci_i2c_driver); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("I2C driver for NXP NCI NFC controllers"); MODULE_AUTHOR("Clément Perrochaud "); +MODULE_AUTHOR("Oleg Zhurakivskyy "); diff --git a/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c index 6acc85a0e..3629a7056 100644 --- a/drivers/nfc/pn544/i2c.c +++ b/drivers/nfc/pn544/i2c.c @@ -895,56 +895,35 @@ static int pn544_hci_i2c_acpi_request_resources(struct i2c_client *client) return -ENODEV; /* Get EN GPIO from ACPI */ - gpiod_en = devm_gpiod_get_index(dev, PN544_GPIO_NAME_EN, 1); + gpiod_en = devm_gpiod_get_index(dev, PN544_GPIO_NAME_EN, 1, + GPIOD_OUT_LOW); if (IS_ERR(gpiod_en)) { - nfc_err(dev, - "Unable to get EN GPIO\n"); + nfc_err(dev, "Unable to get EN GPIO\n"); return -ENODEV; } - phy->gpio_en = desc_to_gpio(gpiod_en); - - /* Configuration EN GPIO */ - ret = gpiod_direction_output(gpiod_en, 0); - if (ret) { - nfc_err(dev, "Fail EN pin direction\n"); - return ret; - } + phy->gpio_en = desc_to_gpio(gpiod_en); /* Get FW GPIO from ACPI */ - gpiod_fw = devm_gpiod_get_index(dev, PN544_GPIO_NAME_FW, 2); + gpiod_fw = devm_gpiod_get_index(dev, PN544_GPIO_NAME_FW, 2, + GPIOD_OUT_LOW); if (IS_ERR(gpiod_fw)) { - nfc_err(dev, - "Unable to get FW GPIO\n"); + nfc_err(dev, "Unable to get FW GPIO\n"); return -ENODEV; } - phy->gpio_fw = desc_to_gpio(gpiod_fw); - - /* Configuration FW GPIO */ - ret = gpiod_direction_output(gpiod_fw, 0); - if (ret) { - nfc_err(dev, "Fail FW pin direction\n"); - return ret; - } + phy->gpio_fw = desc_to_gpio(gpiod_fw); /* Get IRQ GPIO */ - gpiod_irq = devm_gpiod_get_index(dev, PN544_GPIO_NAME_IRQ, 0); + gpiod_irq = devm_gpiod_get_index(dev, PN544_GPIO_NAME_IRQ, 0, + GPIOD_IN); if (IS_ERR(gpiod_irq)) { - nfc_err(dev, - "Unable to get IRQ GPIO\n"); + nfc_err(dev, "Unable to get IRQ GPIO\n"); return -ENODEV; } phy->gpio_irq = desc_to_gpio(gpiod_irq); - /* Configure IRQ GPIO */ - ret = gpiod_direction_input(gpiod_irq); - if (ret) { - nfc_err(dev, "Fail IRQ pin direction\n"); - return ret; - } - /* Map the pin to an IRQ */ ret = gpiod_to_irq(gpiod_irq); if (ret < 0) { diff --git a/drivers/nfc/pn544/mei.c b/drivers/nfc/pn544/mei.c index 330cd4031..101a37e12 100644 --- a/drivers/nfc/pn544/mei.c +++ b/drivers/nfc/pn544/mei.c @@ -67,7 +67,7 @@ static int pn544_mei_remove(struct mei_cl_device *device) } static struct mei_cl_device_id pn544_mei_tbl[] = { - { PN544_DRIVER_NAME }, + { PN544_DRIVER_NAME, MEI_NFC_UUID}, /* required last entry */ { } diff --git a/drivers/nfc/st-nci/Kconfig b/drivers/nfc/st-nci/Kconfig new file mode 100644 index 000000000..fc3904c94 --- /dev/null +++ b/drivers/nfc/st-nci/Kconfig @@ -0,0 +1,23 @@ +config NFC_ST_NCI + tristate "STMicroelectronics ST NCI NFC driver" + depends on NFC_NCI + default n + ---help--- + STMicroelectronics NFC NCI chips core driver. It implements the chipset + NCI logic and hooks into the NFC kernel APIs. Physical layers will + register against it. + + To compile this driver as a module, choose m here. The module will + be called st-nci. + Say N if unsure. + +config NFC_ST_NCI_I2C + tristate "NFC ST NCI i2c support" + depends on NFC_ST_NCI && I2C + ---help--- + This module adds support for an I2C interface to the + STMicroelectronics NFC NCI chips familly. + Select this if your platform is using the i2c bus. + + If you choose to build a module, it'll be called st-nci_i2c. + Say N if unsure. diff --git a/drivers/nfc/st-nci/Makefile b/drivers/nfc/st-nci/Makefile new file mode 100644 index 000000000..0df157df3 --- /dev/null +++ b/drivers/nfc/st-nci/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for ST21NFCB NCI based NFC driver +# + +st-nci-objs = ndlc.o core.o st-nci_se.o +obj-$(CONFIG_NFC_ST_NCI) += st-nci.o + +st-nci_i2c-objs = i2c.o +obj-$(CONFIG_NFC_ST_NCI_I2C) += st-nci_i2c.o diff --git a/drivers/nfc/st-nci/core.c b/drivers/nfc/st-nci/core.c new file mode 100644 index 000000000..c419d3943 --- /dev/null +++ b/drivers/nfc/st-nci/core.c @@ -0,0 +1,179 @@ +/* + * NCI based Driver for STMicroelectronics NFC Chip + * + * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#include +#include +#include +#include +#include +#include + +#include "st-nci.h" +#include "st-nci_se.h" + +#define DRIVER_DESC "NCI NFC driver for ST_NCI" + +#define ST_NCI1_X_PROPRIETARY_ISO15693 0x83 + +static int st_nci_init(struct nci_dev *ndev) +{ + struct nci_mode_set_cmd cmd; + + cmd.cmd_type = ST_NCI_SET_NFC_MODE; + cmd.mode = 1; + + return nci_prop_cmd(ndev, ST_NCI_CORE_PROP, + sizeof(struct nci_mode_set_cmd), (__u8 *)&cmd); +} + +static int st_nci_open(struct nci_dev *ndev) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + int r; + + if (test_and_set_bit(ST_NCI_RUNNING, &info->flags)) + return 0; + + r = ndlc_open(info->ndlc); + if (r) + clear_bit(ST_NCI_RUNNING, &info->flags); + + return r; +} + +static int st_nci_close(struct nci_dev *ndev) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + if (!test_bit(ST_NCI_RUNNING, &info->flags)) + return 0; + + ndlc_close(info->ndlc); + + clear_bit(ST_NCI_RUNNING, &info->flags); + + return 0; +} + +static int st_nci_send(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + skb->dev = (void *)ndev; + + if (!test_bit(ST_NCI_RUNNING, &info->flags)) + return -EBUSY; + + return ndlc_send(info->ndlc, skb); +} + +static __u32 st_nci_get_rfprotocol(struct nci_dev *ndev, + __u8 rf_protocol) +{ + return rf_protocol == ST_NCI1_X_PROPRIETARY_ISO15693 ? + NFC_PROTO_ISO15693_MASK : 0; +} + +static int st_nci_prop_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + __u8 status = skb->data[0]; + + nci_req_complete(ndev, status); + return 0; +} + +static struct nci_prop_ops st_nci_prop_ops[] = { + { + .opcode = nci_opcode_pack(NCI_GID_PROPRIETARY, + ST_NCI_CORE_PROP), + .rsp = st_nci_prop_rsp_packet, + }, +}; + +static struct nci_ops st_nci_ops = { + .init = st_nci_init, + .open = st_nci_open, + .close = st_nci_close, + .send = st_nci_send, + .get_rfprotocol = st_nci_get_rfprotocol, + .discover_se = st_nci_discover_se, + .enable_se = st_nci_enable_se, + .disable_se = st_nci_disable_se, + .se_io = st_nci_se_io, + .hci_load_session = st_nci_hci_load_session, + .hci_event_received = st_nci_hci_event_received, + .hci_cmd_received = st_nci_hci_cmd_received, + .prop_ops = st_nci_prop_ops, + .n_prop_ops = ARRAY_SIZE(st_nci_prop_ops), +}; + +int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom, + int phy_tailroom) +{ + struct st_nci_info *info; + int r; + u32 protocols; + + info = devm_kzalloc(ndlc->dev, + sizeof(struct st_nci_info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + protocols = NFC_PROTO_JEWEL_MASK + | NFC_PROTO_MIFARE_MASK + | NFC_PROTO_FELICA_MASK + | NFC_PROTO_ISO14443_MASK + | NFC_PROTO_ISO14443_B_MASK + | NFC_PROTO_ISO15693_MASK + | NFC_PROTO_NFC_DEP_MASK; + + ndlc->ndev = nci_allocate_device(&st_nci_ops, protocols, + phy_headroom, phy_tailroom); + if (!ndlc->ndev) { + pr_err("Cannot allocate nfc ndev\n"); + return -ENOMEM; + } + info->ndlc = ndlc; + + nci_set_drvdata(ndlc->ndev, info); + + r = nci_register_device(ndlc->ndev); + if (r) { + pr_err("Cannot register nfc device to nci core\n"); + nci_free_device(ndlc->ndev); + return r; + } + + return st_nci_se_init(ndlc->ndev); +} +EXPORT_SYMBOL_GPL(st_nci_probe); + +void st_nci_remove(struct nci_dev *ndev) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + ndlc_close(info->ndlc); + + nci_unregister_device(ndev); + nci_free_device(ndev); +} +EXPORT_SYMBOL_GPL(st_nci_remove); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/nfc/st-nci/i2c.c b/drivers/nfc/st-nci/i2c.c new file mode 100644 index 000000000..06175ce76 --- /dev/null +++ b/drivers/nfc/st-nci/i2c.c @@ -0,0 +1,385 @@ +/* + * I2C Link Layer for ST NCI NFC controller familly based Driver + * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ndlc.h" + +#define DRIVER_DESC "NCI NFC driver for ST21NFCB" + +/* ndlc header */ +#define ST21NFCB_FRAME_HEADROOM 1 +#define ST21NFCB_FRAME_TAILROOM 0 + +#define ST_NCI_I2C_MIN_SIZE 4 /* PCB(1) + NCI Packet header(3) */ +#define ST_NCI_I2C_MAX_SIZE 250 /* req 4.2.1 */ + +#define ST_NCI_I2C_DRIVER_NAME "st_nci_i2c" + +static struct i2c_device_id st_nci_i2c_id_table[] = { + {ST_NCI_DRIVER_NAME, 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, st_nci_i2c_id_table); + +struct st_nci_i2c_phy { + struct i2c_client *i2c_dev; + struct llt_ndlc *ndlc; + + unsigned int gpio_reset; + unsigned int irq_polarity; +}; + +#define I2C_DUMP_SKB(info, skb) \ +do { \ + pr_debug("%s:\n", info); \ + print_hex_dump(KERN_DEBUG, "i2c: ", DUMP_PREFIX_OFFSET, \ + 16, 1, (skb)->data, (skb)->len, 0); \ +} while (0) + +static int st_nci_i2c_enable(void *phy_id) +{ + struct st_nci_i2c_phy *phy = phy_id; + + gpio_set_value(phy->gpio_reset, 0); + usleep_range(10000, 15000); + gpio_set_value(phy->gpio_reset, 1); + usleep_range(80000, 85000); + + if (phy->ndlc->powered == 0) + enable_irq(phy->i2c_dev->irq); + + return 0; +} + +static void st_nci_i2c_disable(void *phy_id) +{ + struct st_nci_i2c_phy *phy = phy_id; + + disable_irq_nosync(phy->i2c_dev->irq); +} + +/* + * Writing a frame must not return the number of written bytes. + * It must return either zero for success, or <0 for error. + * In addition, it must not alter the skb + */ +static int st_nci_i2c_write(void *phy_id, struct sk_buff *skb) +{ + int r = -1; + struct st_nci_i2c_phy *phy = phy_id; + struct i2c_client *client = phy->i2c_dev; + + I2C_DUMP_SKB("st_nci_i2c_write", skb); + + if (phy->ndlc->hard_fault != 0) + return phy->ndlc->hard_fault; + + r = i2c_master_send(client, skb->data, skb->len); + if (r < 0) { /* Retry, chip was in standby */ + usleep_range(1000, 4000); + r = i2c_master_send(client, skb->data, skb->len); + } + + if (r >= 0) { + if (r != skb->len) + r = -EREMOTEIO; + else + r = 0; + } + + return r; +} + +/* + * Reads an ndlc frame and returns it in a newly allocated sk_buff. + * returns: + * frame size : if received frame is complete (find ST21NFCB_SOF_EOF at + * end of read) + * -EAGAIN : if received frame is incomplete (not find ST21NFCB_SOF_EOF + * at end of read) + * -EREMOTEIO : i2c read error (fatal) + * -EBADMSG : frame was incorrect and discarded + * (value returned from st_nci_i2c_repack) + * -EIO : if no ST21NFCB_SOF_EOF is found after reaching + * the read length end sequence + */ +static int st_nci_i2c_read(struct st_nci_i2c_phy *phy, + struct sk_buff **skb) +{ + int r; + u8 len; + u8 buf[ST_NCI_I2C_MAX_SIZE]; + struct i2c_client *client = phy->i2c_dev; + + r = i2c_master_recv(client, buf, ST_NCI_I2C_MIN_SIZE); + if (r < 0) { /* Retry, chip was in standby */ + usleep_range(1000, 4000); + r = i2c_master_recv(client, buf, ST_NCI_I2C_MIN_SIZE); + } + + if (r != ST_NCI_I2C_MIN_SIZE) + return -EREMOTEIO; + + len = be16_to_cpu(*(__be16 *) (buf + 2)); + if (len > ST_NCI_I2C_MAX_SIZE) { + nfc_err(&client->dev, "invalid frame len\n"); + return -EBADMSG; + } + + *skb = alloc_skb(ST_NCI_I2C_MIN_SIZE + len, GFP_KERNEL); + if (*skb == NULL) + return -ENOMEM; + + skb_reserve(*skb, ST_NCI_I2C_MIN_SIZE); + skb_put(*skb, ST_NCI_I2C_MIN_SIZE); + memcpy((*skb)->data, buf, ST_NCI_I2C_MIN_SIZE); + + if (!len) + return 0; + + r = i2c_master_recv(client, buf, len); + if (r != len) { + kfree_skb(*skb); + return -EREMOTEIO; + } + + skb_put(*skb, len); + memcpy((*skb)->data + ST_NCI_I2C_MIN_SIZE, buf, len); + + I2C_DUMP_SKB("i2c frame read", *skb); + + return 0; +} + +/* + * Reads an ndlc frame from the chip. + * + * On ST21NFCB, IRQ goes in idle state when read starts. + */ +static irqreturn_t st_nci_irq_thread_fn(int irq, void *phy_id) +{ + struct st_nci_i2c_phy *phy = phy_id; + struct i2c_client *client; + struct sk_buff *skb = NULL; + int r; + + if (!phy || !phy->ndlc || irq != phy->i2c_dev->irq) { + WARN_ON_ONCE(1); + return IRQ_NONE; + } + + client = phy->i2c_dev; + dev_dbg(&client->dev, "IRQ\n"); + + if (phy->ndlc->hard_fault) + return IRQ_HANDLED; + + if (!phy->ndlc->powered) { + st_nci_i2c_disable(phy); + return IRQ_HANDLED; + } + + r = st_nci_i2c_read(phy, &skb); + if (r == -EREMOTEIO || r == -ENOMEM || r == -EBADMSG) + return IRQ_HANDLED; + + ndlc_recv(phy->ndlc, skb); + + return IRQ_HANDLED; +} + +static struct nfc_phy_ops i2c_phy_ops = { + .write = st_nci_i2c_write, + .enable = st_nci_i2c_enable, + .disable = st_nci_i2c_disable, +}; + +#ifdef CONFIG_OF +static int st_nci_i2c_of_request_resources(struct i2c_client *client) +{ + struct st_nci_i2c_phy *phy = i2c_get_clientdata(client); + struct device_node *pp; + int gpio; + int r; + + pp = client->dev.of_node; + if (!pp) + return -ENODEV; + + /* Get GPIO from device tree */ + gpio = of_get_named_gpio(pp, "reset-gpios", 0); + if (gpio < 0) { + nfc_err(&client->dev, + "Failed to retrieve reset-gpios from device tree\n"); + return gpio; + } + + /* GPIO request and configuration */ + r = devm_gpio_request_one(&client->dev, gpio, + GPIOF_OUT_INIT_HIGH, "clf_reset"); + if (r) { + nfc_err(&client->dev, "Failed to request reset pin\n"); + return r; + } + phy->gpio_reset = gpio; + + phy->irq_polarity = irq_get_trigger_type(client->irq); + + return 0; +} +#else +static int st_nci_i2c_of_request_resources(struct i2c_client *client) +{ + return -ENODEV; +} +#endif + +static int st_nci_i2c_request_resources(struct i2c_client *client) +{ + struct st_nci_nfc_platform_data *pdata; + struct st_nci_i2c_phy *phy = i2c_get_clientdata(client); + int r; + + pdata = client->dev.platform_data; + if (pdata == NULL) { + nfc_err(&client->dev, "No platform data\n"); + return -EINVAL; + } + + /* store for later use */ + phy->gpio_reset = pdata->gpio_reset; + phy->irq_polarity = pdata->irq_polarity; + + r = devm_gpio_request_one(&client->dev, + phy->gpio_reset, GPIOF_OUT_INIT_HIGH, "clf_reset"); + if (r) { + pr_err("%s : reset gpio_request failed\n", __FILE__); + return r; + } + + return 0; +} + +static int st_nci_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct st_nci_i2c_phy *phy; + struct st_nci_nfc_platform_data *pdata; + int r; + + dev_dbg(&client->dev, "%s\n", __func__); + dev_dbg(&client->dev, "IRQ: %d\n", client->irq); + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + nfc_err(&client->dev, "Need I2C_FUNC_I2C\n"); + return -ENODEV; + } + + phy = devm_kzalloc(&client->dev, sizeof(struct st_nci_i2c_phy), + GFP_KERNEL); + if (!phy) + return -ENOMEM; + + phy->i2c_dev = client; + + i2c_set_clientdata(client, phy); + + pdata = client->dev.platform_data; + if (!pdata && client->dev.of_node) { + r = st_nci_i2c_of_request_resources(client); + if (r) { + nfc_err(&client->dev, "No platform data\n"); + return r; + } + } else if (pdata) { + r = st_nci_i2c_request_resources(client); + if (r) { + nfc_err(&client->dev, + "Cannot get platform resources\n"); + return r; + } + } else { + nfc_err(&client->dev, + "st21nfcb platform resources not available\n"); + return -ENODEV; + } + + r = ndlc_probe(phy, &i2c_phy_ops, &client->dev, + ST21NFCB_FRAME_HEADROOM, ST21NFCB_FRAME_TAILROOM, + &phy->ndlc); + if (r < 0) { + nfc_err(&client->dev, "Unable to register ndlc layer\n"); + return r; + } + + r = devm_request_threaded_irq(&client->dev, client->irq, NULL, + st_nci_irq_thread_fn, + phy->irq_polarity | IRQF_ONESHOT, + ST_NCI_DRIVER_NAME, phy); + if (r < 0) + nfc_err(&client->dev, "Unable to register IRQ handler\n"); + + return r; +} + +static int st_nci_i2c_remove(struct i2c_client *client) +{ + struct st_nci_i2c_phy *phy = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "%s\n", __func__); + + ndlc_remove(phy->ndlc); + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id of_st_nci_i2c_match[] = { + { .compatible = "st,st21nfcb-i2c", }, + { .compatible = "st,st21nfcb_i2c", }, + { .compatible = "st,st21nfcc-i2c", }, + {} +}; +MODULE_DEVICE_TABLE(of, of_st_nci_i2c_match); +#endif + +static struct i2c_driver st_nci_i2c_driver = { + .driver = { + .owner = THIS_MODULE, + .name = ST_NCI_I2C_DRIVER_NAME, + .of_match_table = of_match_ptr(of_st_nci_i2c_match), + }, + .probe = st_nci_i2c_probe, + .id_table = st_nci_i2c_id_table, + .remove = st_nci_i2c_remove, +}; + +module_i2c_driver(st_nci_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/nfc/st-nci/ndlc.c b/drivers/nfc/st-nci/ndlc.c new file mode 100644 index 000000000..56c6a4cb4 --- /dev/null +++ b/drivers/nfc/st-nci/ndlc.c @@ -0,0 +1,313 @@ +/* + * Low Level Transport (NDLC) Driver for STMicroelectronics NFC Chip + * + * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#include +#include + +#include "ndlc.h" +#include "st-nci.h" + +#define NDLC_TIMER_T1 100 +#define NDLC_TIMER_T1_WAIT 400 +#define NDLC_TIMER_T2 1200 + +#define PCB_TYPE_DATAFRAME 0x80 +#define PCB_TYPE_SUPERVISOR 0xc0 +#define PCB_TYPE_MASK PCB_TYPE_SUPERVISOR + +#define PCB_SYNC_ACK 0x20 +#define PCB_SYNC_NACK 0x10 +#define PCB_SYNC_WAIT 0x30 +#define PCB_SYNC_NOINFO 0x00 +#define PCB_SYNC_MASK PCB_SYNC_WAIT + +#define PCB_DATAFRAME_RETRANSMIT_YES 0x00 +#define PCB_DATAFRAME_RETRANSMIT_NO 0x04 +#define PCB_DATAFRAME_RETRANSMIT_MASK PCB_DATAFRAME_RETRANSMIT_NO + +#define PCB_SUPERVISOR_RETRANSMIT_YES 0x00 +#define PCB_SUPERVISOR_RETRANSMIT_NO 0x02 +#define PCB_SUPERVISOR_RETRANSMIT_MASK PCB_SUPERVISOR_RETRANSMIT_NO + +#define PCB_FRAME_CRC_INFO_PRESENT 0x08 +#define PCB_FRAME_CRC_INFO_NOTPRESENT 0x00 +#define PCB_FRAME_CRC_INFO_MASK PCB_FRAME_CRC_INFO_PRESENT + +#define NDLC_DUMP_SKB(info, skb) \ +do { \ + pr_debug("%s:\n", info); \ + print_hex_dump(KERN_DEBUG, "ndlc: ", DUMP_PREFIX_OFFSET, \ + 16, 1, skb->data, skb->len, 0); \ +} while (0) + +int ndlc_open(struct llt_ndlc *ndlc) +{ + /* toggle reset pin */ + ndlc->ops->enable(ndlc->phy_id); + ndlc->powered = 1; + return 0; +} +EXPORT_SYMBOL(ndlc_open); + +void ndlc_close(struct llt_ndlc *ndlc) +{ + struct nci_mode_set_cmd cmd; + + cmd.cmd_type = ST_NCI_SET_NFC_MODE; + cmd.mode = 0; + + /* toggle reset pin */ + ndlc->ops->enable(ndlc->phy_id); + + nci_prop_cmd(ndlc->ndev, ST_NCI_CORE_PROP, + sizeof(struct nci_mode_set_cmd), (__u8 *)&cmd); + + ndlc->powered = 0; + ndlc->ops->disable(ndlc->phy_id); +} +EXPORT_SYMBOL(ndlc_close); + +int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb) +{ + /* add ndlc header */ + u8 pcb = PCB_TYPE_DATAFRAME | PCB_DATAFRAME_RETRANSMIT_NO | + PCB_FRAME_CRC_INFO_NOTPRESENT; + + *skb_push(skb, 1) = pcb; + skb_queue_tail(&ndlc->send_q, skb); + + schedule_work(&ndlc->sm_work); + + return 0; +} +EXPORT_SYMBOL(ndlc_send); + +static void llt_ndlc_send_queue(struct llt_ndlc *ndlc) +{ + struct sk_buff *skb; + int r; + unsigned long time_sent; + + if (ndlc->send_q.qlen) + pr_debug("sendQlen=%d unackQlen=%d\n", + ndlc->send_q.qlen, ndlc->ack_pending_q.qlen); + + while (ndlc->send_q.qlen) { + skb = skb_dequeue(&ndlc->send_q); + NDLC_DUMP_SKB("ndlc frame written", skb); + r = ndlc->ops->write(ndlc->phy_id, skb); + if (r < 0) { + ndlc->hard_fault = r; + break; + } + time_sent = jiffies; + *(unsigned long *)skb->cb = time_sent; + + skb_queue_tail(&ndlc->ack_pending_q, skb); + + /* start timer t1 for ndlc aknowledge */ + ndlc->t1_active = true; + mod_timer(&ndlc->t1_timer, time_sent + + msecs_to_jiffies(NDLC_TIMER_T1)); + /* start timer t2 for chip availability */ + ndlc->t2_active = true; + mod_timer(&ndlc->t2_timer, time_sent + + msecs_to_jiffies(NDLC_TIMER_T2)); + } +} + +static void llt_ndlc_requeue_data_pending(struct llt_ndlc *ndlc) +{ + struct sk_buff *skb; + u8 pcb; + + while ((skb = skb_dequeue_tail(&ndlc->ack_pending_q))) { + pcb = skb->data[0]; + switch (pcb & PCB_TYPE_MASK) { + case PCB_TYPE_SUPERVISOR: + skb->data[0] = (pcb & ~PCB_SUPERVISOR_RETRANSMIT_MASK) | + PCB_SUPERVISOR_RETRANSMIT_YES; + break; + case PCB_TYPE_DATAFRAME: + skb->data[0] = (pcb & ~PCB_DATAFRAME_RETRANSMIT_MASK) | + PCB_DATAFRAME_RETRANSMIT_YES; + break; + default: + pr_err("UNKNOWN Packet Control Byte=%d\n", pcb); + kfree_skb(skb); + continue; + } + skb_queue_head(&ndlc->send_q, skb); + } +} + +static void llt_ndlc_rcv_queue(struct llt_ndlc *ndlc) +{ + struct sk_buff *skb; + u8 pcb; + unsigned long time_sent; + + if (ndlc->rcv_q.qlen) + pr_debug("rcvQlen=%d\n", ndlc->rcv_q.qlen); + + while ((skb = skb_dequeue(&ndlc->rcv_q)) != NULL) { + pcb = skb->data[0]; + skb_pull(skb, 1); + if ((pcb & PCB_TYPE_MASK) == PCB_TYPE_SUPERVISOR) { + switch (pcb & PCB_SYNC_MASK) { + case PCB_SYNC_ACK: + del_timer_sync(&ndlc->t1_timer); + del_timer_sync(&ndlc->t2_timer); + ndlc->t2_active = false; + ndlc->t1_active = false; + break; + case PCB_SYNC_NACK: + llt_ndlc_requeue_data_pending(ndlc); + llt_ndlc_send_queue(ndlc); + /* start timer t1 for ndlc aknowledge */ + time_sent = jiffies; + ndlc->t1_active = true; + mod_timer(&ndlc->t1_timer, time_sent + + msecs_to_jiffies(NDLC_TIMER_T1)); + break; + case PCB_SYNC_WAIT: + time_sent = jiffies; + ndlc->t1_active = true; + mod_timer(&ndlc->t1_timer, time_sent + + msecs_to_jiffies(NDLC_TIMER_T1_WAIT)); + break; + default: + pr_err("UNKNOWN Packet Control Byte=%d\n", pcb); + kfree_skb(skb); + break; + } + } else { + nci_recv_frame(ndlc->ndev, skb); + } + } +} + +static void llt_ndlc_sm_work(struct work_struct *work) +{ + struct llt_ndlc *ndlc = container_of(work, struct llt_ndlc, sm_work); + + llt_ndlc_send_queue(ndlc); + llt_ndlc_rcv_queue(ndlc); + + if (ndlc->t1_active && timer_pending(&ndlc->t1_timer) == 0) { + pr_debug + ("Handle T1(recv SUPERVISOR) elapsed (T1 now inactive)\n"); + ndlc->t1_active = false; + + llt_ndlc_requeue_data_pending(ndlc); + llt_ndlc_send_queue(ndlc); + } + + if (ndlc->t2_active && timer_pending(&ndlc->t2_timer) == 0) { + pr_debug("Handle T2(recv DATA) elapsed (T2 now inactive)\n"); + ndlc->t2_active = false; + ndlc->t1_active = false; + del_timer_sync(&ndlc->t1_timer); + del_timer_sync(&ndlc->t2_timer); + ndlc_close(ndlc); + ndlc->hard_fault = -EREMOTEIO; + } +} + +void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb) +{ + if (skb == NULL) { + pr_err("NULL Frame -> link is dead\n"); + ndlc->hard_fault = -EREMOTEIO; + ndlc_close(ndlc); + } else { + NDLC_DUMP_SKB("incoming frame", skb); + skb_queue_tail(&ndlc->rcv_q, skb); + } + + schedule_work(&ndlc->sm_work); +} +EXPORT_SYMBOL(ndlc_recv); + +static void ndlc_t1_timeout(unsigned long data) +{ + struct llt_ndlc *ndlc = (struct llt_ndlc *)data; + + pr_debug("\n"); + + schedule_work(&ndlc->sm_work); +} + +static void ndlc_t2_timeout(unsigned long data) +{ + struct llt_ndlc *ndlc = (struct llt_ndlc *)data; + + pr_debug("\n"); + + schedule_work(&ndlc->sm_work); +} + +int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev, + int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id) +{ + struct llt_ndlc *ndlc; + + ndlc = devm_kzalloc(dev, sizeof(struct llt_ndlc), GFP_KERNEL); + if (!ndlc) + return -ENOMEM; + + ndlc->ops = phy_ops; + ndlc->phy_id = phy_id; + ndlc->dev = dev; + ndlc->powered = 0; + + *ndlc_id = ndlc; + + /* initialize timers */ + init_timer(&ndlc->t1_timer); + ndlc->t1_timer.data = (unsigned long)ndlc; + ndlc->t1_timer.function = ndlc_t1_timeout; + + init_timer(&ndlc->t2_timer); + ndlc->t2_timer.data = (unsigned long)ndlc; + ndlc->t2_timer.function = ndlc_t2_timeout; + + skb_queue_head_init(&ndlc->rcv_q); + skb_queue_head_init(&ndlc->send_q); + skb_queue_head_init(&ndlc->ack_pending_q); + + INIT_WORK(&ndlc->sm_work, llt_ndlc_sm_work); + + return st_nci_probe(ndlc, phy_headroom, phy_tailroom); +} +EXPORT_SYMBOL(ndlc_probe); + +void ndlc_remove(struct llt_ndlc *ndlc) +{ + st_nci_remove(ndlc->ndev); + + /* cancel timers */ + del_timer_sync(&ndlc->t1_timer); + del_timer_sync(&ndlc->t2_timer); + ndlc->t2_active = false; + ndlc->t1_active = false; + + skb_queue_purge(&ndlc->rcv_q); + skb_queue_purge(&ndlc->send_q); +} +EXPORT_SYMBOL(ndlc_remove); diff --git a/drivers/nfc/st-nci/ndlc.h b/drivers/nfc/st-nci/ndlc.h new file mode 100644 index 000000000..6361005ef --- /dev/null +++ b/drivers/nfc/st-nci/ndlc.h @@ -0,0 +1,60 @@ +/* + * NCI based Driver for STMicroelectronics NFC Chip + * + * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#ifndef __LOCAL_NDLC_H_ +#define __LOCAL_NDLC_H_ + +#include +#include + +/* Low Level Transport description */ +struct llt_ndlc { + struct nci_dev *ndev; + struct nfc_phy_ops *ops; + void *phy_id; + + struct timer_list t1_timer; + bool t1_active; + + struct timer_list t2_timer; + bool t2_active; + + struct sk_buff_head rcv_q; + struct sk_buff_head send_q; + struct sk_buff_head ack_pending_q; + + struct work_struct sm_work; + + struct device *dev; + + /* + * < 0 if hardware error occurred + * and prevents normal operation. + */ + int hard_fault; + int powered; +}; + +int ndlc_open(struct llt_ndlc *ndlc); +void ndlc_close(struct llt_ndlc *ndlc); +int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb); +void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb); +int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev, + int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id); +void ndlc_remove(struct llt_ndlc *ndlc); +#endif /* __LOCAL_NDLC_H__ */ diff --git a/drivers/nfc/st-nci/st-nci.h b/drivers/nfc/st-nci/st-nci.h new file mode 100644 index 000000000..850a2395d --- /dev/null +++ b/drivers/nfc/st-nci/st-nci.h @@ -0,0 +1,50 @@ +/* + * NCI based Driver for STMicroelectronics NFC Chip + * + * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#ifndef __LOCAL_ST_NCI_H_ +#define __LOCAL_ST_NCI_H_ + +#include "st-nci_se.h" +#include "ndlc.h" + +/* Define private flags: */ +#define ST_NCI_RUNNING 1 + +#define ST_NCI_CORE_PROP 0x01 +#define ST_NCI_SET_NFC_MODE 0x02 + +struct nci_mode_set_cmd { + u8 cmd_type; + u8 mode; +} __packed; + +struct nci_mode_set_rsp { + u8 status; +} __packed; + +struct st_nci_info { + struct llt_ndlc *ndlc; + unsigned long flags; + struct st_nci_se_info se_info; +}; + +void st_nci_remove(struct nci_dev *ndev); +int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom, + int phy_tailroom); + +#endif /* __LOCAL_ST_NCI_H_ */ diff --git a/drivers/nfc/st-nci/st-nci_se.c b/drivers/nfc/st-nci/st-nci_se.c new file mode 100644 index 000000000..97addfa96 --- /dev/null +++ b/drivers/nfc/st-nci/st-nci_se.c @@ -0,0 +1,714 @@ +/* + * Secure Element driver for STMicroelectronics NFC NCI chip + * + * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#include +#include +#include +#include +#include + +#include "st-nci.h" +#include "st-nci_se.h" + +struct st_nci_pipe_info { + u8 pipe_state; + u8 src_host_id; + u8 src_gate_id; + u8 dst_host_id; + u8 dst_gate_id; +} __packed; + +/* Hosts */ +#define ST_NCI_HOST_CONTROLLER_ID 0x00 +#define ST_NCI_TERMINAL_HOST_ID 0x01 +#define ST_NCI_UICC_HOST_ID 0x02 +#define ST_NCI_ESE_HOST_ID 0xc0 + +/* Gates */ +#define ST_NCI_DEVICE_MGNT_GATE 0x01 +#define ST_NCI_APDU_READER_GATE 0xf0 +#define ST_NCI_CONNECTIVITY_GATE 0x41 + +/* Pipes */ +#define ST_NCI_DEVICE_MGNT_PIPE 0x02 + +/* Connectivity pipe only */ +#define ST_NCI_SE_COUNT_PIPE_UICC 0x01 +/* Connectivity + APDU Reader pipe */ +#define ST_NCI_SE_COUNT_PIPE_EMBEDDED 0x02 + +#define ST_NCI_SE_TO_HOT_PLUG 1000 /* msecs */ +#define ST_NCI_SE_TO_PIPES 2000 + +#define ST_NCI_EVT_HOT_PLUG_IS_INHIBITED(x) (x->data[0] & 0x80) + +#define NCI_HCI_APDU_PARAM_ATR 0x01 +#define NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY 0x01 +#define NCI_HCI_ADMIN_PARAM_WHITELIST 0x03 +#define NCI_HCI_ADMIN_PARAM_HOST_LIST 0x04 + +#define ST_NCI_EVT_SE_HARD_RESET 0x20 +#define ST_NCI_EVT_TRANSMIT_DATA 0x10 +#define ST_NCI_EVT_WTX_REQUEST 0x11 +#define ST_NCI_EVT_SE_SOFT_RESET 0x11 +#define ST_NCI_EVT_SE_END_OF_APDU_TRANSFER 0x21 +#define ST_NCI_EVT_HOT_PLUG 0x03 + +#define ST_NCI_SE_MODE_OFF 0x00 +#define ST_NCI_SE_MODE_ON 0x01 + +#define ST_NCI_EVT_CONNECTIVITY 0x10 +#define ST_NCI_EVT_TRANSACTION 0x12 + +#define ST_NCI_DM_GETINFO 0x13 +#define ST_NCI_DM_GETINFO_PIPE_LIST 0x02 +#define ST_NCI_DM_GETINFO_PIPE_INFO 0x01 +#define ST_NCI_DM_PIPE_CREATED 0x02 +#define ST_NCI_DM_PIPE_OPEN 0x04 +#define ST_NCI_DM_RF_ACTIVE 0x80 +#define ST_NCI_DM_DISCONNECT 0x30 + +#define ST_NCI_DM_IS_PIPE_OPEN(p) \ + ((p & 0x0f) == (ST_NCI_DM_PIPE_CREATED | ST_NCI_DM_PIPE_OPEN)) + +#define ST_NCI_ATR_DEFAULT_BWI 0x04 + +/* + * WT = 2^BWI/10[s], convert into msecs and add a secure + * room by increasing by 2 this timeout + */ +#define ST_NCI_BWI_TO_TIMEOUT(x) ((1 << x) * 200) +#define ST_NCI_ATR_GET_Y_FROM_TD(x) (x >> 4) + +/* If TA is present bit 0 is set */ +#define ST_NCI_ATR_TA_PRESENT(x) (x & 0x01) +/* If TB is present bit 1 is set */ +#define ST_NCI_ATR_TB_PRESENT(x) (x & 0x02) + +#define ST_NCI_NUM_DEVICES 256 + +static DECLARE_BITMAP(dev_mask, ST_NCI_NUM_DEVICES); + +/* Here are the mandatory pipe for st_nci */ +static struct nci_hci_gate st_nci_gates[] = { + {NCI_HCI_ADMIN_GATE, NCI_HCI_ADMIN_PIPE, + ST_NCI_HOST_CONTROLLER_ID}, + {NCI_HCI_LINK_MGMT_GATE, NCI_HCI_LINK_MGMT_PIPE, + ST_NCI_HOST_CONTROLLER_ID}, + {ST_NCI_DEVICE_MGNT_GATE, ST_NCI_DEVICE_MGNT_PIPE, + ST_NCI_HOST_CONTROLLER_ID}, + + /* Secure element pipes are created by secure element host */ + {ST_NCI_CONNECTIVITY_GATE, NCI_HCI_DO_NOT_OPEN_PIPE, + ST_NCI_HOST_CONTROLLER_ID}, + {ST_NCI_APDU_READER_GATE, NCI_HCI_DO_NOT_OPEN_PIPE, + ST_NCI_HOST_CONTROLLER_ID}, +}; + +static u8 st_nci_se_get_bwi(struct nci_dev *ndev) +{ + int i; + u8 td; + struct st_nci_info *info = nci_get_drvdata(ndev); + + /* Bits 8 to 5 of the first TB for T=1 encode BWI from zero to nine */ + for (i = 1; i < ST_NCI_ESE_MAX_LENGTH; i++) { + td = ST_NCI_ATR_GET_Y_FROM_TD(info->se_info.atr[i]); + if (ST_NCI_ATR_TA_PRESENT(td)) + i++; + if (ST_NCI_ATR_TB_PRESENT(td)) { + i++; + return info->se_info.atr[i] >> 4; + } + } + return ST_NCI_ATR_DEFAULT_BWI; +} + +static void st_nci_se_get_atr(struct nci_dev *ndev) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + int r; + struct sk_buff *skb; + + r = nci_hci_get_param(ndev, ST_NCI_APDU_READER_GATE, + NCI_HCI_APDU_PARAM_ATR, &skb); + if (r < 0) + return; + + if (skb->len <= ST_NCI_ESE_MAX_LENGTH) { + memcpy(info->se_info.atr, skb->data, skb->len); + + info->se_info.wt_timeout = + ST_NCI_BWI_TO_TIMEOUT(st_nci_se_get_bwi(ndev)); + } + kfree_skb(skb); +} + +int st_nci_hci_load_session(struct nci_dev *ndev) +{ + int i, j, r; + struct sk_buff *skb_pipe_list, *skb_pipe_info; + struct st_nci_pipe_info *dm_pipe_info; + u8 pipe_list[] = { ST_NCI_DM_GETINFO_PIPE_LIST, + ST_NCI_TERMINAL_HOST_ID}; + u8 pipe_info[] = { ST_NCI_DM_GETINFO_PIPE_INFO, + ST_NCI_TERMINAL_HOST_ID, 0}; + + /* On ST_NCI device pipes number are dynamics + * If pipes are already created, hci_dev_up will fail. + * Doing a clear all pipe is a bad idea because: + * - It does useless EEPROM cycling + * - It might cause issue for secure elements support + * (such as removing connectivity or APDU reader pipe) + * A better approach on ST_NCI is to: + * - get a pipe list for each host. + * (eg: ST_NCI_HOST_CONTROLLER_ID for now). + * (TODO Later on UICC HOST and eSE HOST) + * - get pipe information + * - match retrieved pipe list in st_nci_gates + * ST_NCI_DEVICE_MGNT_GATE is a proprietary gate + * with ST_NCI_DEVICE_MGNT_PIPE. + * Pipe can be closed and need to be open. + */ + r = nci_hci_connect_gate(ndev, ST_NCI_HOST_CONTROLLER_ID, + ST_NCI_DEVICE_MGNT_GATE, + ST_NCI_DEVICE_MGNT_PIPE); + if (r < 0) + goto free_info; + + /* Get pipe list */ + r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, + ST_NCI_DM_GETINFO, pipe_list, sizeof(pipe_list), + &skb_pipe_list); + if (r < 0) + goto free_info; + + /* Complete the existing gate_pipe table */ + for (i = 0; i < skb_pipe_list->len; i++) { + pipe_info[2] = skb_pipe_list->data[i]; + r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, + ST_NCI_DM_GETINFO, pipe_info, + sizeof(pipe_info), &skb_pipe_info); + + if (r) + continue; + + /* + * Match pipe ID and gate ID + * Output format from ST21NFC_DM_GETINFO is: + * - pipe state (1byte) + * - source hid (1byte) + * - source gid (1byte) + * - destination hid (1byte) + * - destination gid (1byte) + */ + dm_pipe_info = (struct st_nci_pipe_info *)skb_pipe_info->data; + if (dm_pipe_info->dst_gate_id == ST_NCI_APDU_READER_GATE && + dm_pipe_info->src_host_id != ST_NCI_ESE_HOST_ID) { + pr_err("Unexpected apdu_reader pipe on host %x\n", + dm_pipe_info->src_host_id); + continue; + } + + for (j = 0; (j < ARRAY_SIZE(st_nci_gates)) && + (st_nci_gates[j].gate != dm_pipe_info->dst_gate_id); j++) + ; + + if (j < ARRAY_SIZE(st_nci_gates) && + st_nci_gates[j].gate == dm_pipe_info->dst_gate_id && + ST_NCI_DM_IS_PIPE_OPEN(dm_pipe_info->pipe_state)) { + st_nci_gates[j].pipe = pipe_info[2]; + + ndev->hci_dev->gate2pipe[st_nci_gates[j].gate] = + st_nci_gates[j].pipe; + ndev->hci_dev->pipes[st_nci_gates[j].pipe].gate = + st_nci_gates[j].gate; + ndev->hci_dev->pipes[st_nci_gates[j].pipe].host = + dm_pipe_info->src_host_id; + } + } + + memcpy(ndev->hci_dev->init_data.gates, st_nci_gates, + sizeof(st_nci_gates)); + +free_info: + kfree_skb(skb_pipe_info); + kfree_skb(skb_pipe_list); + return r; +} +EXPORT_SYMBOL_GPL(st_nci_hci_load_session); + +static void st_nci_hci_admin_event_received(struct nci_dev *ndev, + u8 event, struct sk_buff *skb) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + switch (event) { + case ST_NCI_EVT_HOT_PLUG: + if (info->se_info.se_active) { + if (!ST_NCI_EVT_HOT_PLUG_IS_INHIBITED(skb)) { + del_timer_sync(&info->se_info.se_active_timer); + info->se_info.se_active = false; + complete(&info->se_info.req_completion); + } else { + mod_timer(&info->se_info.se_active_timer, + jiffies + + msecs_to_jiffies(ST_NCI_SE_TO_PIPES)); + } + } + break; + } +} + +static int st_nci_hci_apdu_reader_event_received(struct nci_dev *ndev, + u8 event, + struct sk_buff *skb) +{ + int r = 0; + struct st_nci_info *info = nci_get_drvdata(ndev); + + pr_debug("apdu reader gate event: %x\n", event); + + switch (event) { + case ST_NCI_EVT_TRANSMIT_DATA: + del_timer_sync(&info->se_info.bwi_timer); + info->se_info.bwi_active = false; + info->se_info.cb(info->se_info.cb_context, + skb->data, skb->len, 0); + break; + case ST_NCI_EVT_WTX_REQUEST: + mod_timer(&info->se_info.bwi_timer, jiffies + + msecs_to_jiffies(info->se_info.wt_timeout)); + break; + } + + kfree_skb(skb); + return r; +} + +/* + * Returns: + * <= 0: driver handled the event, skb consumed + * 1: driver does not handle the event, please do standard processing + */ +static int st_nci_hci_connectivity_event_received(struct nci_dev *ndev, + u8 host, u8 event, + struct sk_buff *skb) +{ + int r = 0; + struct device *dev = &ndev->nfc_dev->dev; + struct nfc_evt_transaction *transaction; + + pr_debug("connectivity gate event: %x\n", event); + + switch (event) { + case ST_NCI_EVT_CONNECTIVITY: + + break; + case ST_NCI_EVT_TRANSACTION: + /* According to specification etsi 102 622 + * 11.2.2.4 EVT_TRANSACTION Table 52 + * Description Tag Length + * AID 81 5 to 16 + * PARAMETERS 82 0 to 255 + */ + if (skb->len < NFC_MIN_AID_LENGTH + 2 && + skb->data[0] != NFC_EVT_TRANSACTION_AID_TAG) + return -EPROTO; + + transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev, + skb->len - 2, GFP_KERNEL); + + transaction->aid_len = skb->data[1]; + memcpy(transaction->aid, &skb->data[2], transaction->aid_len); + + /* Check next byte is PARAMETERS tag (82) */ + if (skb->data[transaction->aid_len + 2] != + NFC_EVT_TRANSACTION_PARAMS_TAG) + return -EPROTO; + + transaction->params_len = skb->data[transaction->aid_len + 3]; + memcpy(transaction->params, skb->data + + transaction->aid_len + 4, transaction->params_len); + + r = nfc_se_transaction(ndev->nfc_dev, host, transaction); + break; + default: + return 1; + } + kfree_skb(skb); + return r; +} + +void st_nci_hci_event_received(struct nci_dev *ndev, u8 pipe, + u8 event, struct sk_buff *skb) +{ + u8 gate = ndev->hci_dev->pipes[pipe].gate; + u8 host = ndev->hci_dev->pipes[pipe].host; + + switch (gate) { + case NCI_HCI_ADMIN_GATE: + st_nci_hci_admin_event_received(ndev, event, skb); + break; + case ST_NCI_APDU_READER_GATE: + st_nci_hci_apdu_reader_event_received(ndev, event, skb); + break; + case ST_NCI_CONNECTIVITY_GATE: + st_nci_hci_connectivity_event_received(ndev, host, event, + skb); + break; + } +} +EXPORT_SYMBOL_GPL(st_nci_hci_event_received); + + +void st_nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd, + struct sk_buff *skb) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + u8 gate = ndev->hci_dev->pipes[pipe].gate; + + pr_debug("cmd: %x\n", cmd); + + switch (cmd) { + case NCI_HCI_ANY_OPEN_PIPE: + if (gate != ST_NCI_APDU_READER_GATE && + ndev->hci_dev->pipes[pipe].host != ST_NCI_UICC_HOST_ID) + ndev->hci_dev->count_pipes++; + + if (ndev->hci_dev->count_pipes == + ndev->hci_dev->expected_pipes) { + del_timer_sync(&info->se_info.se_active_timer); + info->se_info.se_active = false; + ndev->hci_dev->count_pipes = 0; + complete(&info->se_info.req_completion); + } + break; + } +} +EXPORT_SYMBOL_GPL(st_nci_hci_cmd_received); + +/* + * Remarks: On some early st_nci firmware, nci_nfcee_mode_set(0) + * is rejected + */ +static int st_nci_control_se(struct nci_dev *ndev, u8 se_idx, + u8 state) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + int r; + struct sk_buff *sk_host_list; + u8 host_id; + + switch (se_idx) { + case ST_NCI_UICC_HOST_ID: + ndev->hci_dev->count_pipes = 0; + ndev->hci_dev->expected_pipes = ST_NCI_SE_COUNT_PIPE_UICC; + break; + case ST_NCI_ESE_HOST_ID: + ndev->hci_dev->count_pipes = 0; + ndev->hci_dev->expected_pipes = ST_NCI_SE_COUNT_PIPE_EMBEDDED; + break; + default: + return -EINVAL; + } + + /* + * Wait for an EVT_HOT_PLUG in order to + * retrieve a relevant host list. + */ + reinit_completion(&info->se_info.req_completion); + r = nci_nfcee_mode_set(ndev, se_idx, NCI_NFCEE_ENABLE); + if (r != NCI_STATUS_OK) + return r; + + mod_timer(&info->se_info.se_active_timer, jiffies + + msecs_to_jiffies(ST_NCI_SE_TO_HOT_PLUG)); + info->se_info.se_active = true; + + /* Ignore return value and check in any case the host_list */ + wait_for_completion_interruptible(&info->se_info.req_completion); + + /* There might be some "collision" after receiving a HOT_PLUG event + * This may cause the CLF to not answer to the next hci command. + * There is no possible synchronization to prevent this. + * Adding a small delay is the only way to solve the issue. + */ + usleep_range(3000, 5000); + + r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE, + NCI_HCI_ADMIN_PARAM_HOST_LIST, &sk_host_list); + if (r != NCI_HCI_ANY_OK) + return r; + + host_id = sk_host_list->data[sk_host_list->len - 1]; + kfree_skb(sk_host_list); + if (state == ST_NCI_SE_MODE_ON && host_id == se_idx) + return se_idx; + else if (state == ST_NCI_SE_MODE_OFF && host_id != se_idx) + return se_idx; + + return -1; +} + +int st_nci_disable_se(struct nci_dev *ndev, u32 se_idx) +{ + int r; + + pr_debug("st_nci_disable_se\n"); + + if (se_idx == NFC_SE_EMBEDDED) { + r = nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE, + ST_NCI_EVT_SE_END_OF_APDU_TRANSFER, NULL, 0); + if (r < 0) + return r; + } + + return 0; +} +EXPORT_SYMBOL_GPL(st_nci_disable_se); + +int st_nci_enable_se(struct nci_dev *ndev, u32 se_idx) +{ + int r; + + pr_debug("st_nci_enable_se\n"); + + if (se_idx == ST_NCI_HCI_HOST_ID_ESE) { + r = nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE, + ST_NCI_EVT_SE_SOFT_RESET, NULL, 0); + if (r < 0) + return r; + } + + return 0; +} +EXPORT_SYMBOL_GPL(st_nci_enable_se); + +static int st_nci_hci_network_init(struct nci_dev *ndev) +{ + struct core_conn_create_dest_spec_params *dest_params; + struct dest_spec_params spec_params; + struct nci_conn_info *conn_info; + int r, dev_num; + + dest_params = + kzalloc(sizeof(struct core_conn_create_dest_spec_params) + + sizeof(struct dest_spec_params), GFP_KERNEL); + if (dest_params == NULL) { + r = -ENOMEM; + goto exit; + } + + dest_params->type = NCI_DESTINATION_SPECIFIC_PARAM_NFCEE_TYPE; + dest_params->length = sizeof(struct dest_spec_params); + spec_params.id = ndev->hci_dev->nfcee_id; + spec_params.protocol = NCI_NFCEE_INTERFACE_HCI_ACCESS; + memcpy(dest_params->value, &spec_params, + sizeof(struct dest_spec_params)); + r = nci_core_conn_create(ndev, NCI_DESTINATION_NFCEE, 1, + sizeof(struct core_conn_create_dest_spec_params) + + sizeof(struct dest_spec_params), + dest_params); + if (r != NCI_STATUS_OK) + goto free_dest_params; + + conn_info = ndev->hci_dev->conn_info; + if (!conn_info) + goto free_dest_params; + + memcpy(ndev->hci_dev->init_data.gates, st_nci_gates, + sizeof(st_nci_gates)); + + /* + * Session id must include the driver name + i2c bus addr + * persistent info to discriminate 2 identical chips + */ + dev_num = find_first_zero_bit(dev_mask, ST_NCI_NUM_DEVICES); + if (dev_num >= ST_NCI_NUM_DEVICES) { + r = -ENODEV; + goto free_dest_params; + } + + scnprintf(ndev->hci_dev->init_data.session_id, + sizeof(ndev->hci_dev->init_data.session_id), + "%s%2x", "ST21BH", dev_num); + + r = nci_hci_dev_session_init(ndev); + if (r != NCI_HCI_ANY_OK) + goto free_dest_params; + + r = nci_nfcee_mode_set(ndev, ndev->hci_dev->conn_info->id, + NCI_NFCEE_ENABLE); + if (r != NCI_STATUS_OK) + goto free_dest_params; + +free_dest_params: + kfree(dest_params); + +exit: + return r; +} + +int st_nci_discover_se(struct nci_dev *ndev) +{ + u8 param[2]; + int r; + int se_count = 0; + + pr_debug("st_nci_discover_se\n"); + + r = st_nci_hci_network_init(ndev); + if (r != 0) + return r; + + param[0] = ST_NCI_UICC_HOST_ID; + param[1] = ST_NCI_HCI_HOST_ID_ESE; + r = nci_hci_set_param(ndev, NCI_HCI_ADMIN_GATE, + NCI_HCI_ADMIN_PARAM_WHITELIST, + param, sizeof(param)); + if (r != NCI_HCI_ANY_OK) + return r; + + r = st_nci_control_se(ndev, ST_NCI_UICC_HOST_ID, + ST_NCI_SE_MODE_ON); + if (r == ST_NCI_UICC_HOST_ID) { + nfc_add_se(ndev->nfc_dev, ST_NCI_UICC_HOST_ID, NFC_SE_UICC); + se_count++; + } + + /* Try to enable eSE in order to check availability */ + r = st_nci_control_se(ndev, ST_NCI_HCI_HOST_ID_ESE, + ST_NCI_SE_MODE_ON); + if (r == ST_NCI_HCI_HOST_ID_ESE) { + nfc_add_se(ndev->nfc_dev, ST_NCI_HCI_HOST_ID_ESE, + NFC_SE_EMBEDDED); + se_count++; + st_nci_se_get_atr(ndev); + } + + return !se_count; +} +EXPORT_SYMBOL_GPL(st_nci_discover_se); + +int st_nci_se_io(struct nci_dev *ndev, u32 se_idx, + u8 *apdu, size_t apdu_length, + se_io_cb_t cb, void *cb_context) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + pr_debug("\n"); + + switch (se_idx) { + case ST_NCI_HCI_HOST_ID_ESE: + info->se_info.cb = cb; + info->se_info.cb_context = cb_context; + mod_timer(&info->se_info.bwi_timer, jiffies + + msecs_to_jiffies(info->se_info.wt_timeout)); + info->se_info.bwi_active = true; + return nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE, + ST_NCI_EVT_TRANSMIT_DATA, apdu, + apdu_length); + default: + return -ENODEV; + } +} +EXPORT_SYMBOL(st_nci_se_io); + +static void st_nci_se_wt_timeout(unsigned long data) +{ + /* + * No answer from the secure element + * within the defined timeout. + * Let's send a reset request as recovery procedure. + * According to the situation, we first try to send a software reset + * to the secure element. If the next command is still not + * answering in time, we send to the CLF a secure element hardware + * reset request. + */ + /* hardware reset managed through VCC_UICC_OUT power supply */ + u8 param = 0x01; + struct st_nci_info *info = (struct st_nci_info *) data; + + pr_debug("\n"); + + info->se_info.bwi_active = false; + + if (!info->se_info.xch_error) { + info->se_info.xch_error = true; + nci_hci_send_event(info->ndlc->ndev, ST_NCI_APDU_READER_GATE, + ST_NCI_EVT_SE_SOFT_RESET, NULL, 0); + } else { + info->se_info.xch_error = false; + nci_hci_send_event(info->ndlc->ndev, ST_NCI_DEVICE_MGNT_GATE, + ST_NCI_EVT_SE_HARD_RESET, ¶m, 1); + } + info->se_info.cb(info->se_info.cb_context, NULL, 0, -ETIME); +} + +static void st_nci_se_activation_timeout(unsigned long data) +{ + struct st_nci_info *info = (struct st_nci_info *) data; + + pr_debug("\n"); + + info->se_info.se_active = false; + + complete(&info->se_info.req_completion); +} + +int st_nci_se_init(struct nci_dev *ndev) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + init_completion(&info->se_info.req_completion); + /* initialize timers */ + init_timer(&info->se_info.bwi_timer); + info->se_info.bwi_timer.data = (unsigned long)info; + info->se_info.bwi_timer.function = st_nci_se_wt_timeout; + info->se_info.bwi_active = false; + + init_timer(&info->se_info.se_active_timer); + info->se_info.se_active_timer.data = (unsigned long)info; + info->se_info.se_active_timer.function = + st_nci_se_activation_timeout; + info->se_info.se_active = false; + + info->se_info.xch_error = false; + + info->se_info.wt_timeout = + ST_NCI_BWI_TO_TIMEOUT(ST_NCI_ATR_DEFAULT_BWI); + + return 0; +} +EXPORT_SYMBOL(st_nci_se_init); + +void st_nci_se_deinit(struct nci_dev *ndev) +{ + struct st_nci_info *info = nci_get_drvdata(ndev); + + if (info->se_info.bwi_active) + del_timer_sync(&info->se_info.bwi_timer); + if (info->se_info.se_active) + del_timer_sync(&info->se_info.se_active_timer); + + info->se_info.se_active = false; + info->se_info.bwi_active = false; +} +EXPORT_SYMBOL(st_nci_se_deinit); + diff --git a/drivers/nfc/st-nci/st-nci_se.h b/drivers/nfc/st-nci/st-nci_se.h new file mode 100644 index 000000000..ea66e879d --- /dev/null +++ b/drivers/nfc/st-nci/st-nci_se.h @@ -0,0 +1,61 @@ +/* + * Secure Element Driver for STMicroelectronics NFC NCI Chip + * + * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#ifndef __LOCAL_ST_NCI_SE_H_ +#define __LOCAL_ST_NCI_SE_H_ + +/* + * ref ISO7816-3 chap 8.1. the initial character TS is followed by a + * sequence of at most 32 characters. + */ +#define ST_NCI_ESE_MAX_LENGTH 33 +#define ST_NCI_HCI_HOST_ID_ESE 0xc0 + +struct st_nci_se_info { + u8 atr[ST_NCI_ESE_MAX_LENGTH]; + struct completion req_completion; + + struct timer_list bwi_timer; + int wt_timeout; /* in msecs */ + bool bwi_active; + + struct timer_list se_active_timer; + bool se_active; + + bool xch_error; + + se_io_cb_t cb; + void *cb_context; +}; + +int st_nci_se_init(struct nci_dev *ndev); +void st_nci_se_deinit(struct nci_dev *ndev); + +int st_nci_discover_se(struct nci_dev *ndev); +int st_nci_enable_se(struct nci_dev *ndev, u32 se_idx); +int st_nci_disable_se(struct nci_dev *ndev, u32 se_idx); +int st_nci_se_io(struct nci_dev *ndev, u32 se_idx, + u8 *apdu, size_t apdu_length, + se_io_cb_t cb, void *cb_context); +int st_nci_hci_load_session(struct nci_dev *ndev); +void st_nci_hci_event_received(struct nci_dev *ndev, u8 pipe, + u8 event, struct sk_buff *skb); +void st_nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd, + struct sk_buff *skb); + + +#endif /* __LOCAL_ST_NCI_SE_H_ */ diff --git a/drivers/nfc/st21nfcb/Kconfig b/drivers/nfc/st21nfcb/Kconfig deleted file mode 100644 index e0322dd03..000000000 --- a/drivers/nfc/st21nfcb/Kconfig +++ /dev/null @@ -1,22 +0,0 @@ -config NFC_ST21NFCB - tristate "STMicroelectronics ST21NFCB NFC driver" - depends on NFC_NCI - default n - ---help--- - STMicroelectronics ST21NFCB core driver. It implements the chipset - NCI logic and hooks into the NFC kernel APIs. Physical layers will - register against it. - - To compile this driver as a module, choose m here. The module will - be called st21nfcb. - Say N if unsure. - -config NFC_ST21NFCB_I2C - tristate "NFC ST21NFCB i2c support" - depends on NFC_ST21NFCB && I2C - ---help--- - This module adds support for the STMicroelectronics st21nfcb i2c interface. - Select this if your platform is using the i2c bus. - - If you choose to build a module, it'll be called st21nfcb_i2c. - Say N if unsure. diff --git a/drivers/nfc/st21nfcb/Makefile b/drivers/nfc/st21nfcb/Makefile deleted file mode 100644 index ce659a9e5..000000000 --- a/drivers/nfc/st21nfcb/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -# -# Makefile for ST21NFCB NCI based NFC driver -# - -st21nfcb_nci-objs = ndlc.o st21nfcb.o st21nfcb_se.o -obj-$(CONFIG_NFC_ST21NFCB) += st21nfcb_nci.o - -st21nfcb_i2c-objs = i2c.o -obj-$(CONFIG_NFC_ST21NFCB_I2C) += st21nfcb_i2c.o diff --git a/drivers/nfc/st21nfcb/i2c.c b/drivers/nfc/st21nfcb/i2c.c deleted file mode 100644 index c44f8cf53..000000000 --- a/drivers/nfc/st21nfcb/i2c.c +++ /dev/null @@ -1,388 +0,0 @@ -/* - * I2C Link Layer for ST21NFCB NCI based Driver - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ndlc.h" - -#define DRIVER_DESC "NCI NFC driver for ST21NFCB" - -/* ndlc header */ -#define ST21NFCB_FRAME_HEADROOM 1 -#define ST21NFCB_FRAME_TAILROOM 0 - -#define ST21NFCB_NCI_I2C_MIN_SIZE 4 /* PCB(1) + NCI Packet header(3) */ -#define ST21NFCB_NCI_I2C_MAX_SIZE 250 /* req 4.2.1 */ - -#define ST21NFCB_NCI_I2C_DRIVER_NAME "st21nfcb_nci_i2c" - -static struct i2c_device_id st21nfcb_nci_i2c_id_table[] = { - {ST21NFCB_NCI_DRIVER_NAME, 0}, - {} -}; -MODULE_DEVICE_TABLE(i2c, st21nfcb_nci_i2c_id_table); - -struct st21nfcb_i2c_phy { - struct i2c_client *i2c_dev; - struct llt_ndlc *ndlc; - - unsigned int gpio_reset; - unsigned int irq_polarity; - - int powered; -}; - -#define I2C_DUMP_SKB(info, skb) \ -do { \ - pr_debug("%s:\n", info); \ - print_hex_dump(KERN_DEBUG, "i2c: ", DUMP_PREFIX_OFFSET, \ - 16, 1, (skb)->data, (skb)->len, 0); \ -} while (0) - -static int st21nfcb_nci_i2c_enable(void *phy_id) -{ - struct st21nfcb_i2c_phy *phy = phy_id; - - gpio_set_value(phy->gpio_reset, 0); - usleep_range(10000, 15000); - gpio_set_value(phy->gpio_reset, 1); - phy->powered = 1; - usleep_range(80000, 85000); - - return 0; -} - -static void st21nfcb_nci_i2c_disable(void *phy_id) -{ - struct st21nfcb_i2c_phy *phy = phy_id; - - phy->powered = 0; - /* reset chip in order to flush clf */ - gpio_set_value(phy->gpio_reset, 0); - usleep_range(10000, 15000); - gpio_set_value(phy->gpio_reset, 1); -} - -/* - * Writing a frame must not return the number of written bytes. - * It must return either zero for success, or <0 for error. - * In addition, it must not alter the skb - */ -static int st21nfcb_nci_i2c_write(void *phy_id, struct sk_buff *skb) -{ - int r = -1; - struct st21nfcb_i2c_phy *phy = phy_id; - struct i2c_client *client = phy->i2c_dev; - - I2C_DUMP_SKB("st21nfcb_nci_i2c_write", skb); - - if (phy->ndlc->hard_fault != 0) - return phy->ndlc->hard_fault; - - r = i2c_master_send(client, skb->data, skb->len); - if (r < 0) { /* Retry, chip was in standby */ - usleep_range(1000, 4000); - r = i2c_master_send(client, skb->data, skb->len); - } - - if (r >= 0) { - if (r != skb->len) - r = -EREMOTEIO; - else - r = 0; - } - - return r; -} - -/* - * Reads an ndlc frame and returns it in a newly allocated sk_buff. - * returns: - * frame size : if received frame is complete (find ST21NFCB_SOF_EOF at - * end of read) - * -EAGAIN : if received frame is incomplete (not find ST21NFCB_SOF_EOF - * at end of read) - * -EREMOTEIO : i2c read error (fatal) - * -EBADMSG : frame was incorrect and discarded - * (value returned from st21nfcb_nci_i2c_repack) - * -EIO : if no ST21NFCB_SOF_EOF is found after reaching - * the read length end sequence - */ -static int st21nfcb_nci_i2c_read(struct st21nfcb_i2c_phy *phy, - struct sk_buff **skb) -{ - int r; - u8 len; - u8 buf[ST21NFCB_NCI_I2C_MAX_SIZE]; - struct i2c_client *client = phy->i2c_dev; - - r = i2c_master_recv(client, buf, ST21NFCB_NCI_I2C_MIN_SIZE); - if (r < 0) { /* Retry, chip was in standby */ - usleep_range(1000, 4000); - r = i2c_master_recv(client, buf, ST21NFCB_NCI_I2C_MIN_SIZE); - } - - if (r != ST21NFCB_NCI_I2C_MIN_SIZE) - return -EREMOTEIO; - - len = be16_to_cpu(*(__be16 *) (buf + 2)); - if (len > ST21NFCB_NCI_I2C_MAX_SIZE) { - nfc_err(&client->dev, "invalid frame len\n"); - return -EBADMSG; - } - - *skb = alloc_skb(ST21NFCB_NCI_I2C_MIN_SIZE + len, GFP_KERNEL); - if (*skb == NULL) - return -ENOMEM; - - skb_reserve(*skb, ST21NFCB_NCI_I2C_MIN_SIZE); - skb_put(*skb, ST21NFCB_NCI_I2C_MIN_SIZE); - memcpy((*skb)->data, buf, ST21NFCB_NCI_I2C_MIN_SIZE); - - if (!len) - return 0; - - r = i2c_master_recv(client, buf, len); - if (r != len) { - kfree_skb(*skb); - return -EREMOTEIO; - } - - skb_put(*skb, len); - memcpy((*skb)->data + ST21NFCB_NCI_I2C_MIN_SIZE, buf, len); - - I2C_DUMP_SKB("i2c frame read", *skb); - - return 0; -} - -/* - * Reads an ndlc frame from the chip. - * - * On ST21NFCB, IRQ goes in idle state when read starts. - */ -static irqreturn_t st21nfcb_nci_irq_thread_fn(int irq, void *phy_id) -{ - struct st21nfcb_i2c_phy *phy = phy_id; - struct i2c_client *client; - struct sk_buff *skb = NULL; - int r; - - if (!phy || !phy->ndlc || irq != phy->i2c_dev->irq) { - WARN_ON_ONCE(1); - return IRQ_NONE; - } - - client = phy->i2c_dev; - dev_dbg(&client->dev, "IRQ\n"); - - if (phy->ndlc->hard_fault) - return IRQ_HANDLED; - - if (!phy->powered) { - st21nfcb_nci_i2c_disable(phy); - return IRQ_HANDLED; - } - - r = st21nfcb_nci_i2c_read(phy, &skb); - if (r == -EREMOTEIO || r == -ENOMEM || r == -EBADMSG) - return IRQ_HANDLED; - - ndlc_recv(phy->ndlc, skb); - - return IRQ_HANDLED; -} - -static struct nfc_phy_ops i2c_phy_ops = { - .write = st21nfcb_nci_i2c_write, - .enable = st21nfcb_nci_i2c_enable, - .disable = st21nfcb_nci_i2c_disable, -}; - -#ifdef CONFIG_OF -static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client) -{ - struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(client); - struct device_node *pp; - int gpio; - int r; - - pp = client->dev.of_node; - if (!pp) - return -ENODEV; - - /* Get GPIO from device tree */ - gpio = of_get_named_gpio(pp, "reset-gpios", 0); - if (gpio < 0) { - nfc_err(&client->dev, - "Failed to retrieve reset-gpios from device tree\n"); - return gpio; - } - - /* GPIO request and configuration */ - r = devm_gpio_request_one(&client->dev, gpio, - GPIOF_OUT_INIT_HIGH, "clf_reset"); - if (r) { - nfc_err(&client->dev, "Failed to request reset pin\n"); - return r; - } - phy->gpio_reset = gpio; - - phy->irq_polarity = irq_get_trigger_type(client->irq); - - return 0; -} -#else -static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client) -{ - return -ENODEV; -} -#endif - -static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client) -{ - struct st21nfcb_nfc_platform_data *pdata; - struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(client); - int r; - - pdata = client->dev.platform_data; - if (pdata == NULL) { - nfc_err(&client->dev, "No platform data\n"); - return -EINVAL; - } - - /* store for later use */ - phy->gpio_reset = pdata->gpio_reset; - phy->irq_polarity = pdata->irq_polarity; - - r = devm_gpio_request_one(&client->dev, - phy->gpio_reset, GPIOF_OUT_INIT_HIGH, "clf_reset"); - if (r) { - pr_err("%s : reset gpio_request failed\n", __FILE__); - return r; - } - - return 0; -} - -static int st21nfcb_nci_i2c_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct st21nfcb_i2c_phy *phy; - struct st21nfcb_nfc_platform_data *pdata; - int r; - - dev_dbg(&client->dev, "%s\n", __func__); - dev_dbg(&client->dev, "IRQ: %d\n", client->irq); - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { - nfc_err(&client->dev, "Need I2C_FUNC_I2C\n"); - return -ENODEV; - } - - phy = devm_kzalloc(&client->dev, sizeof(struct st21nfcb_i2c_phy), - GFP_KERNEL); - if (!phy) - return -ENOMEM; - - phy->i2c_dev = client; - - i2c_set_clientdata(client, phy); - - pdata = client->dev.platform_data; - if (!pdata && client->dev.of_node) { - r = st21nfcb_nci_i2c_of_request_resources(client); - if (r) { - nfc_err(&client->dev, "No platform data\n"); - return r; - } - } else if (pdata) { - r = st21nfcb_nci_i2c_request_resources(client); - if (r) { - nfc_err(&client->dev, - "Cannot get platform resources\n"); - return r; - } - } else { - nfc_err(&client->dev, - "st21nfcb platform resources not available\n"); - return -ENODEV; - } - - r = ndlc_probe(phy, &i2c_phy_ops, &client->dev, - ST21NFCB_FRAME_HEADROOM, ST21NFCB_FRAME_TAILROOM, - &phy->ndlc); - if (r < 0) { - nfc_err(&client->dev, "Unable to register ndlc layer\n"); - return r; - } - - r = devm_request_threaded_irq(&client->dev, client->irq, NULL, - st21nfcb_nci_irq_thread_fn, - phy->irq_polarity | IRQF_ONESHOT, - ST21NFCB_NCI_DRIVER_NAME, phy); - if (r < 0) - nfc_err(&client->dev, "Unable to register IRQ handler\n"); - - return r; -} - -static int st21nfcb_nci_i2c_remove(struct i2c_client *client) -{ - struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(client); - - dev_dbg(&client->dev, "%s\n", __func__); - - ndlc_remove(phy->ndlc); - - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id of_st21nfcb_i2c_match[] = { - { .compatible = "st,st21nfcb-i2c", }, - { .compatible = "st,st21nfcb_i2c", }, - {} -}; -MODULE_DEVICE_TABLE(of, of_st21nfcb_i2c_match); -#endif - -static struct i2c_driver st21nfcb_nci_i2c_driver = { - .driver = { - .owner = THIS_MODULE, - .name = ST21NFCB_NCI_I2C_DRIVER_NAME, - .of_match_table = of_match_ptr(of_st21nfcb_i2c_match), - }, - .probe = st21nfcb_nci_i2c_probe, - .id_table = st21nfcb_nci_i2c_id_table, - .remove = st21nfcb_nci_i2c_remove, -}; - -module_i2c_driver(st21nfcb_nci_i2c_driver); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/nfc/st21nfcb/ndlc.c b/drivers/nfc/st21nfcb/ndlc.c deleted file mode 100644 index 6014b5859..000000000 --- a/drivers/nfc/st21nfcb/ndlc.c +++ /dev/null @@ -1,300 +0,0 @@ -/* - * Low Level Transport (NDLC) Driver for STMicroelectronics NFC Chip - * - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#include -#include - -#include "ndlc.h" -#include "st21nfcb.h" - -#define NDLC_TIMER_T1 100 -#define NDLC_TIMER_T1_WAIT 400 -#define NDLC_TIMER_T2 1200 - -#define PCB_TYPE_DATAFRAME 0x80 -#define PCB_TYPE_SUPERVISOR 0xc0 -#define PCB_TYPE_MASK PCB_TYPE_SUPERVISOR - -#define PCB_SYNC_ACK 0x20 -#define PCB_SYNC_NACK 0x10 -#define PCB_SYNC_WAIT 0x30 -#define PCB_SYNC_NOINFO 0x00 -#define PCB_SYNC_MASK PCB_SYNC_WAIT - -#define PCB_DATAFRAME_RETRANSMIT_YES 0x00 -#define PCB_DATAFRAME_RETRANSMIT_NO 0x04 -#define PCB_DATAFRAME_RETRANSMIT_MASK PCB_DATAFRAME_RETRANSMIT_NO - -#define PCB_SUPERVISOR_RETRANSMIT_YES 0x00 -#define PCB_SUPERVISOR_RETRANSMIT_NO 0x02 -#define PCB_SUPERVISOR_RETRANSMIT_MASK PCB_SUPERVISOR_RETRANSMIT_NO - -#define PCB_FRAME_CRC_INFO_PRESENT 0x08 -#define PCB_FRAME_CRC_INFO_NOTPRESENT 0x00 -#define PCB_FRAME_CRC_INFO_MASK PCB_FRAME_CRC_INFO_PRESENT - -#define NDLC_DUMP_SKB(info, skb) \ -do { \ - pr_debug("%s:\n", info); \ - print_hex_dump(KERN_DEBUG, "ndlc: ", DUMP_PREFIX_OFFSET, \ - 16, 1, skb->data, skb->len, 0); \ -} while (0) - -int ndlc_open(struct llt_ndlc *ndlc) -{ - /* toggle reset pin */ - ndlc->ops->enable(ndlc->phy_id); - return 0; -} -EXPORT_SYMBOL(ndlc_open); - -void ndlc_close(struct llt_ndlc *ndlc) -{ - /* toggle reset pin */ - ndlc->ops->disable(ndlc->phy_id); -} -EXPORT_SYMBOL(ndlc_close); - -int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb) -{ - /* add ndlc header */ - u8 pcb = PCB_TYPE_DATAFRAME | PCB_DATAFRAME_RETRANSMIT_NO | - PCB_FRAME_CRC_INFO_NOTPRESENT; - - *skb_push(skb, 1) = pcb; - skb_queue_tail(&ndlc->send_q, skb); - - schedule_work(&ndlc->sm_work); - - return 0; -} -EXPORT_SYMBOL(ndlc_send); - -static void llt_ndlc_send_queue(struct llt_ndlc *ndlc) -{ - struct sk_buff *skb; - int r; - unsigned long time_sent; - - if (ndlc->send_q.qlen) - pr_debug("sendQlen=%d unackQlen=%d\n", - ndlc->send_q.qlen, ndlc->ack_pending_q.qlen); - - while (ndlc->send_q.qlen) { - skb = skb_dequeue(&ndlc->send_q); - NDLC_DUMP_SKB("ndlc frame written", skb); - r = ndlc->ops->write(ndlc->phy_id, skb); - if (r < 0) { - ndlc->hard_fault = r; - break; - } - time_sent = jiffies; - *(unsigned long *)skb->cb = time_sent; - - skb_queue_tail(&ndlc->ack_pending_q, skb); - - /* start timer t1 for ndlc aknowledge */ - ndlc->t1_active = true; - mod_timer(&ndlc->t1_timer, time_sent + - msecs_to_jiffies(NDLC_TIMER_T1)); - /* start timer t2 for chip availability */ - ndlc->t2_active = true; - mod_timer(&ndlc->t2_timer, time_sent + - msecs_to_jiffies(NDLC_TIMER_T2)); - } -} - -static void llt_ndlc_requeue_data_pending(struct llt_ndlc *ndlc) -{ - struct sk_buff *skb; - u8 pcb; - - while ((skb = skb_dequeue_tail(&ndlc->ack_pending_q))) { - pcb = skb->data[0]; - switch (pcb & PCB_TYPE_MASK) { - case PCB_TYPE_SUPERVISOR: - skb->data[0] = (pcb & ~PCB_SUPERVISOR_RETRANSMIT_MASK) | - PCB_SUPERVISOR_RETRANSMIT_YES; - break; - case PCB_TYPE_DATAFRAME: - skb->data[0] = (pcb & ~PCB_DATAFRAME_RETRANSMIT_MASK) | - PCB_DATAFRAME_RETRANSMIT_YES; - break; - default: - pr_err("UNKNOWN Packet Control Byte=%d\n", pcb); - kfree_skb(skb); - continue; - } - skb_queue_head(&ndlc->send_q, skb); - } -} - -static void llt_ndlc_rcv_queue(struct llt_ndlc *ndlc) -{ - struct sk_buff *skb; - u8 pcb; - unsigned long time_sent; - - if (ndlc->rcv_q.qlen) - pr_debug("rcvQlen=%d\n", ndlc->rcv_q.qlen); - - while ((skb = skb_dequeue(&ndlc->rcv_q)) != NULL) { - pcb = skb->data[0]; - skb_pull(skb, 1); - if ((pcb & PCB_TYPE_MASK) == PCB_TYPE_SUPERVISOR) { - switch (pcb & PCB_SYNC_MASK) { - case PCB_SYNC_ACK: - del_timer_sync(&ndlc->t1_timer); - del_timer_sync(&ndlc->t2_timer); - ndlc->t2_active = false; - ndlc->t1_active = false; - break; - case PCB_SYNC_NACK: - llt_ndlc_requeue_data_pending(ndlc); - llt_ndlc_send_queue(ndlc); - /* start timer t1 for ndlc aknowledge */ - time_sent = jiffies; - ndlc->t1_active = true; - mod_timer(&ndlc->t1_timer, time_sent + - msecs_to_jiffies(NDLC_TIMER_T1)); - break; - case PCB_SYNC_WAIT: - time_sent = jiffies; - ndlc->t1_active = true; - mod_timer(&ndlc->t1_timer, time_sent + - msecs_to_jiffies(NDLC_TIMER_T1_WAIT)); - break; - default: - pr_err("UNKNOWN Packet Control Byte=%d\n", pcb); - kfree_skb(skb); - break; - } - } else { - nci_recv_frame(ndlc->ndev, skb); - } - } -} - -static void llt_ndlc_sm_work(struct work_struct *work) -{ - struct llt_ndlc *ndlc = container_of(work, struct llt_ndlc, sm_work); - - llt_ndlc_send_queue(ndlc); - llt_ndlc_rcv_queue(ndlc); - - if (ndlc->t1_active && timer_pending(&ndlc->t1_timer) == 0) { - pr_debug - ("Handle T1(recv SUPERVISOR) elapsed (T1 now inactive)\n"); - ndlc->t1_active = false; - - llt_ndlc_requeue_data_pending(ndlc); - llt_ndlc_send_queue(ndlc); - } - - if (ndlc->t2_active && timer_pending(&ndlc->t2_timer) == 0) { - pr_debug("Handle T2(recv DATA) elapsed (T2 now inactive)\n"); - ndlc->t2_active = false; - ndlc->t1_active = false; - del_timer_sync(&ndlc->t1_timer); - del_timer_sync(&ndlc->t2_timer); - ndlc_close(ndlc); - ndlc->hard_fault = -EREMOTEIO; - } -} - -void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb) -{ - if (skb == NULL) { - pr_err("NULL Frame -> link is dead\n"); - ndlc->hard_fault = -EREMOTEIO; - ndlc_close(ndlc); - } else { - NDLC_DUMP_SKB("incoming frame", skb); - skb_queue_tail(&ndlc->rcv_q, skb); - } - - schedule_work(&ndlc->sm_work); -} -EXPORT_SYMBOL(ndlc_recv); - -static void ndlc_t1_timeout(unsigned long data) -{ - struct llt_ndlc *ndlc = (struct llt_ndlc *)data; - - pr_debug("\n"); - - schedule_work(&ndlc->sm_work); -} - -static void ndlc_t2_timeout(unsigned long data) -{ - struct llt_ndlc *ndlc = (struct llt_ndlc *)data; - - pr_debug("\n"); - - schedule_work(&ndlc->sm_work); -} - -int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev, - int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id) -{ - struct llt_ndlc *ndlc; - - ndlc = devm_kzalloc(dev, sizeof(struct llt_ndlc), GFP_KERNEL); - if (!ndlc) - return -ENOMEM; - - ndlc->ops = phy_ops; - ndlc->phy_id = phy_id; - ndlc->dev = dev; - - *ndlc_id = ndlc; - - /* initialize timers */ - init_timer(&ndlc->t1_timer); - ndlc->t1_timer.data = (unsigned long)ndlc; - ndlc->t1_timer.function = ndlc_t1_timeout; - - init_timer(&ndlc->t2_timer); - ndlc->t2_timer.data = (unsigned long)ndlc; - ndlc->t2_timer.function = ndlc_t2_timeout; - - skb_queue_head_init(&ndlc->rcv_q); - skb_queue_head_init(&ndlc->send_q); - skb_queue_head_init(&ndlc->ack_pending_q); - - INIT_WORK(&ndlc->sm_work, llt_ndlc_sm_work); - - return st21nfcb_nci_probe(ndlc, phy_headroom, phy_tailroom); -} -EXPORT_SYMBOL(ndlc_probe); - -void ndlc_remove(struct llt_ndlc *ndlc) -{ - /* cancel timers */ - del_timer_sync(&ndlc->t1_timer); - del_timer_sync(&ndlc->t2_timer); - ndlc->t2_active = false; - ndlc->t1_active = false; - - skb_queue_purge(&ndlc->rcv_q); - skb_queue_purge(&ndlc->send_q); - - st21nfcb_nci_remove(ndlc->ndev); -} -EXPORT_SYMBOL(ndlc_remove); diff --git a/drivers/nfc/st21nfcb/ndlc.h b/drivers/nfc/st21nfcb/ndlc.h deleted file mode 100644 index b28140e0c..000000000 --- a/drivers/nfc/st21nfcb/ndlc.h +++ /dev/null @@ -1,59 +0,0 @@ -/* - * NCI based Driver for STMicroelectronics NFC Chip - * - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#ifndef __LOCAL_NDLC_H_ -#define __LOCAL_NDLC_H_ - -#include -#include - -/* Low Level Transport description */ -struct llt_ndlc { - struct nci_dev *ndev; - struct nfc_phy_ops *ops; - void *phy_id; - - struct timer_list t1_timer; - bool t1_active; - - struct timer_list t2_timer; - bool t2_active; - - struct sk_buff_head rcv_q; - struct sk_buff_head send_q; - struct sk_buff_head ack_pending_q; - - struct work_struct sm_work; - - struct device *dev; - - /* - * < 0 if hardware error occured - * and prevents normal operation. - */ - int hard_fault; -}; - -int ndlc_open(struct llt_ndlc *ndlc); -void ndlc_close(struct llt_ndlc *ndlc); -int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb); -void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb); -int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev, - int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id); -void ndlc_remove(struct llt_ndlc *ndlc); -#endif /* __LOCAL_NDLC_H__ */ diff --git a/drivers/nfc/st21nfcb/st21nfcb.c b/drivers/nfc/st21nfcb/st21nfcb.c deleted file mode 100644 index c7dc282d5..000000000 --- a/drivers/nfc/st21nfcb/st21nfcb.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - * NCI based Driver for STMicroelectronics NFC Chip - * - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#include -#include -#include -#include - -#include "st21nfcb.h" -#include "st21nfcb_se.h" - -#define DRIVER_DESC "NCI NFC driver for ST21NFCB" - -#define ST21NFCB_NCI1_X_PROPRIETARY_ISO15693 0x83 - -static int st21nfcb_nci_open(struct nci_dev *ndev) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - int r; - - if (test_and_set_bit(ST21NFCB_NCI_RUNNING, &info->flags)) - return 0; - - r = ndlc_open(info->ndlc); - if (r) - clear_bit(ST21NFCB_NCI_RUNNING, &info->flags); - - return r; -} - -static int st21nfcb_nci_close(struct nci_dev *ndev) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - if (!test_and_clear_bit(ST21NFCB_NCI_RUNNING, &info->flags)) - return 0; - - ndlc_close(info->ndlc); - - return 0; -} - -static int st21nfcb_nci_send(struct nci_dev *ndev, struct sk_buff *skb) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - skb->dev = (void *)ndev; - - if (!test_bit(ST21NFCB_NCI_RUNNING, &info->flags)) - return -EBUSY; - - return ndlc_send(info->ndlc, skb); -} - -static __u32 st21nfcb_nci_get_rfprotocol(struct nci_dev *ndev, - __u8 rf_protocol) -{ - return rf_protocol == ST21NFCB_NCI1_X_PROPRIETARY_ISO15693 ? - NFC_PROTO_ISO15693_MASK : 0; -} - -static struct nci_ops st21nfcb_nci_ops = { - .open = st21nfcb_nci_open, - .close = st21nfcb_nci_close, - .send = st21nfcb_nci_send, - .get_rfprotocol = st21nfcb_nci_get_rfprotocol, - .discover_se = st21nfcb_nci_discover_se, - .enable_se = st21nfcb_nci_enable_se, - .disable_se = st21nfcb_nci_disable_se, - .se_io = st21nfcb_nci_se_io, - .hci_load_session = st21nfcb_hci_load_session, - .hci_event_received = st21nfcb_hci_event_received, - .hci_cmd_received = st21nfcb_hci_cmd_received, -}; - -int st21nfcb_nci_probe(struct llt_ndlc *ndlc, int phy_headroom, - int phy_tailroom) -{ - struct st21nfcb_nci_info *info; - int r; - u32 protocols; - - info = devm_kzalloc(ndlc->dev, - sizeof(struct st21nfcb_nci_info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - protocols = NFC_PROTO_JEWEL_MASK - | NFC_PROTO_MIFARE_MASK - | NFC_PROTO_FELICA_MASK - | NFC_PROTO_ISO14443_MASK - | NFC_PROTO_ISO14443_B_MASK - | NFC_PROTO_ISO15693_MASK - | NFC_PROTO_NFC_DEP_MASK; - - ndlc->ndev = nci_allocate_device(&st21nfcb_nci_ops, protocols, - phy_headroom, phy_tailroom); - if (!ndlc->ndev) { - pr_err("Cannot allocate nfc ndev\n"); - return -ENOMEM; - } - info->ndlc = ndlc; - - nci_set_drvdata(ndlc->ndev, info); - - r = nci_register_device(ndlc->ndev); - if (r) { - pr_err("Cannot register nfc device to nci core\n"); - nci_free_device(ndlc->ndev); - return r; - } - - return st21nfcb_se_init(ndlc->ndev); -} -EXPORT_SYMBOL_GPL(st21nfcb_nci_probe); - -void st21nfcb_nci_remove(struct nci_dev *ndev) -{ - nci_unregister_device(ndev); - nci_free_device(ndev); -} -EXPORT_SYMBOL_GPL(st21nfcb_nci_remove); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/nfc/st21nfcb/st21nfcb.h b/drivers/nfc/st21nfcb/st21nfcb.h deleted file mode 100644 index 5ef8a58c9..000000000 --- a/drivers/nfc/st21nfcb/st21nfcb.h +++ /dev/null @@ -1,38 +0,0 @@ -/* - * NCI based Driver for STMicroelectronics NFC Chip - * - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#ifndef __LOCAL_ST21NFCB_H_ -#define __LOCAL_ST21NFCB_H_ - -#include "st21nfcb_se.h" -#include "ndlc.h" - -/* Define private flags: */ -#define ST21NFCB_NCI_RUNNING 1 - -struct st21nfcb_nci_info { - struct llt_ndlc *ndlc; - unsigned long flags; - struct st21nfcb_se_info se_info; -}; - -void st21nfcb_nci_remove(struct nci_dev *ndev); -int st21nfcb_nci_probe(struct llt_ndlc *ndlc, int phy_headroom, - int phy_tailroom); - -#endif /* __LOCAL_ST21NFCB_H_ */ diff --git a/drivers/nfc/st21nfcb/st21nfcb_se.c b/drivers/nfc/st21nfcb/st21nfcb_se.c deleted file mode 100644 index 24862a525..000000000 --- a/drivers/nfc/st21nfcb/st21nfcb_se.c +++ /dev/null @@ -1,713 +0,0 @@ -/* - * NCI based Driver for STMicroelectronics NFC Chip - * - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ - -#include -#include -#include -#include -#include - -#include "st21nfcb.h" -#include "st21nfcb_se.h" - -struct st21nfcb_pipe_info { - u8 pipe_state; - u8 src_host_id; - u8 src_gate_id; - u8 dst_host_id; - u8 dst_gate_id; -} __packed; - -/* Hosts */ -#define ST21NFCB_HOST_CONTROLLER_ID 0x00 -#define ST21NFCB_TERMINAL_HOST_ID 0x01 -#define ST21NFCB_UICC_HOST_ID 0x02 -#define ST21NFCB_ESE_HOST_ID 0xc0 - -/* Gates */ -#define ST21NFCB_DEVICE_MGNT_GATE 0x01 -#define ST21NFCB_APDU_READER_GATE 0xf0 -#define ST21NFCB_CONNECTIVITY_GATE 0x41 - -/* Pipes */ -#define ST21NFCB_DEVICE_MGNT_PIPE 0x02 - -/* Connectivity pipe only */ -#define ST21NFCB_SE_COUNT_PIPE_UICC 0x01 -/* Connectivity + APDU Reader pipe */ -#define ST21NFCB_SE_COUNT_PIPE_EMBEDDED 0x02 - -#define ST21NFCB_SE_TO_HOT_PLUG 1000 /* msecs */ -#define ST21NFCB_SE_TO_PIPES 2000 - -#define ST21NFCB_EVT_HOT_PLUG_IS_INHIBITED(x) (x->data[0] & 0x80) - -#define NCI_HCI_APDU_PARAM_ATR 0x01 -#define NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY 0x01 -#define NCI_HCI_ADMIN_PARAM_WHITELIST 0x03 -#define NCI_HCI_ADMIN_PARAM_HOST_LIST 0x04 - -#define ST21NFCB_EVT_SE_HARD_RESET 0x20 -#define ST21NFCB_EVT_TRANSMIT_DATA 0x10 -#define ST21NFCB_EVT_WTX_REQUEST 0x11 -#define ST21NFCB_EVT_SE_SOFT_RESET 0x11 -#define ST21NFCB_EVT_SE_END_OF_APDU_TRANSFER 0x21 -#define ST21NFCB_EVT_HOT_PLUG 0x03 - -#define ST21NFCB_SE_MODE_OFF 0x00 -#define ST21NFCB_SE_MODE_ON 0x01 - -#define ST21NFCB_EVT_CONNECTIVITY 0x10 -#define ST21NFCB_EVT_TRANSACTION 0x12 - -#define ST21NFCB_DM_GETINFO 0x13 -#define ST21NFCB_DM_GETINFO_PIPE_LIST 0x02 -#define ST21NFCB_DM_GETINFO_PIPE_INFO 0x01 -#define ST21NFCB_DM_PIPE_CREATED 0x02 -#define ST21NFCB_DM_PIPE_OPEN 0x04 -#define ST21NFCB_DM_RF_ACTIVE 0x80 -#define ST21NFCB_DM_DISCONNECT 0x30 - -#define ST21NFCB_DM_IS_PIPE_OPEN(p) \ - ((p & 0x0f) == (ST21NFCB_DM_PIPE_CREATED | ST21NFCB_DM_PIPE_OPEN)) - -#define ST21NFCB_ATR_DEFAULT_BWI 0x04 - -/* - * WT = 2^BWI/10[s], convert into msecs and add a secure - * room by increasing by 2 this timeout - */ -#define ST21NFCB_BWI_TO_TIMEOUT(x) ((1 << x) * 200) -#define ST21NFCB_ATR_GET_Y_FROM_TD(x) (x >> 4) - -/* If TA is present bit 0 is set */ -#define ST21NFCB_ATR_TA_PRESENT(x) (x & 0x01) -/* If TB is present bit 1 is set */ -#define ST21NFCB_ATR_TB_PRESENT(x) (x & 0x02) - -#define ST21NFCB_NUM_DEVICES 256 - -static DECLARE_BITMAP(dev_mask, ST21NFCB_NUM_DEVICES); - -/* Here are the mandatory pipe for st21nfcb */ -static struct nci_hci_gate st21nfcb_gates[] = { - {NCI_HCI_ADMIN_GATE, NCI_HCI_ADMIN_PIPE, - ST21NFCB_HOST_CONTROLLER_ID}, - {NCI_HCI_LINK_MGMT_GATE, NCI_HCI_LINK_MGMT_PIPE, - ST21NFCB_HOST_CONTROLLER_ID}, - {ST21NFCB_DEVICE_MGNT_GATE, ST21NFCB_DEVICE_MGNT_PIPE, - ST21NFCB_HOST_CONTROLLER_ID}, - - /* Secure element pipes are created by secure element host */ - {ST21NFCB_CONNECTIVITY_GATE, NCI_HCI_DO_NOT_OPEN_PIPE, - ST21NFCB_HOST_CONTROLLER_ID}, - {ST21NFCB_APDU_READER_GATE, NCI_HCI_DO_NOT_OPEN_PIPE, - ST21NFCB_HOST_CONTROLLER_ID}, -}; - -static u8 st21nfcb_se_get_bwi(struct nci_dev *ndev) -{ - int i; - u8 td; - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - /* Bits 8 to 5 of the first TB for T=1 encode BWI from zero to nine */ - for (i = 1; i < ST21NFCB_ESE_MAX_LENGTH; i++) { - td = ST21NFCB_ATR_GET_Y_FROM_TD(info->se_info.atr[i]); - if (ST21NFCB_ATR_TA_PRESENT(td)) - i++; - if (ST21NFCB_ATR_TB_PRESENT(td)) { - i++; - return info->se_info.atr[i] >> 4; - } - } - return ST21NFCB_ATR_DEFAULT_BWI; -} - -static void st21nfcb_se_get_atr(struct nci_dev *ndev) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - int r; - struct sk_buff *skb; - - r = nci_hci_get_param(ndev, ST21NFCB_APDU_READER_GATE, - NCI_HCI_APDU_PARAM_ATR, &skb); - if (r < 0) - return; - - if (skb->len <= ST21NFCB_ESE_MAX_LENGTH) { - memcpy(info->se_info.atr, skb->data, skb->len); - - info->se_info.wt_timeout = - ST21NFCB_BWI_TO_TIMEOUT(st21nfcb_se_get_bwi(ndev)); - } - kfree_skb(skb); -} - -int st21nfcb_hci_load_session(struct nci_dev *ndev) -{ - int i, j, r; - struct sk_buff *skb_pipe_list, *skb_pipe_info; - struct st21nfcb_pipe_info *dm_pipe_info; - u8 pipe_list[] = { ST21NFCB_DM_GETINFO_PIPE_LIST, - ST21NFCB_TERMINAL_HOST_ID}; - u8 pipe_info[] = { ST21NFCB_DM_GETINFO_PIPE_INFO, - ST21NFCB_TERMINAL_HOST_ID, 0}; - - /* On ST21NFCB device pipes number are dynamics - * If pipes are already created, hci_dev_up will fail. - * Doing a clear all pipe is a bad idea because: - * - It does useless EEPROM cycling - * - It might cause issue for secure elements support - * (such as removing connectivity or APDU reader pipe) - * A better approach on ST21NFCB is to: - * - get a pipe list for each host. - * (eg: ST21NFCB_HOST_CONTROLLER_ID for now). - * (TODO Later on UICC HOST and eSE HOST) - * - get pipe information - * - match retrieved pipe list in st21nfcb_gates - * ST21NFCB_DEVICE_MGNT_GATE is a proprietary gate - * with ST21NFCB_DEVICE_MGNT_PIPE. - * Pipe can be closed and need to be open. - */ - r = nci_hci_connect_gate(ndev, ST21NFCB_HOST_CONTROLLER_ID, - ST21NFCB_DEVICE_MGNT_GATE, - ST21NFCB_DEVICE_MGNT_PIPE); - if (r < 0) - goto free_info; - - /* Get pipe list */ - r = nci_hci_send_cmd(ndev, ST21NFCB_DEVICE_MGNT_GATE, - ST21NFCB_DM_GETINFO, pipe_list, sizeof(pipe_list), - &skb_pipe_list); - if (r < 0) - goto free_info; - - /* Complete the existing gate_pipe table */ - for (i = 0; i < skb_pipe_list->len; i++) { - pipe_info[2] = skb_pipe_list->data[i]; - r = nci_hci_send_cmd(ndev, ST21NFCB_DEVICE_MGNT_GATE, - ST21NFCB_DM_GETINFO, pipe_info, - sizeof(pipe_info), &skb_pipe_info); - - if (r) - continue; - - /* - * Match pipe ID and gate ID - * Output format from ST21NFC_DM_GETINFO is: - * - pipe state (1byte) - * - source hid (1byte) - * - source gid (1byte) - * - destination hid (1byte) - * - destination gid (1byte) - */ - dm_pipe_info = (struct st21nfcb_pipe_info *)skb_pipe_info->data; - if (dm_pipe_info->dst_gate_id == ST21NFCB_APDU_READER_GATE && - dm_pipe_info->src_host_id != ST21NFCB_ESE_HOST_ID) { - pr_err("Unexpected apdu_reader pipe on host %x\n", - dm_pipe_info->src_host_id); - continue; - } - - for (j = 0; (j < ARRAY_SIZE(st21nfcb_gates)) && - (st21nfcb_gates[j].gate != dm_pipe_info->dst_gate_id); j++) - ; - - if (j < ARRAY_SIZE(st21nfcb_gates) && - st21nfcb_gates[j].gate == dm_pipe_info->dst_gate_id && - ST21NFCB_DM_IS_PIPE_OPEN(dm_pipe_info->pipe_state)) { - st21nfcb_gates[j].pipe = pipe_info[2]; - - ndev->hci_dev->gate2pipe[st21nfcb_gates[j].gate] = - st21nfcb_gates[j].pipe; - ndev->hci_dev->pipes[st21nfcb_gates[j].pipe].gate = - st21nfcb_gates[j].gate; - ndev->hci_dev->pipes[st21nfcb_gates[j].pipe].host = - dm_pipe_info->src_host_id; - } - } - - memcpy(ndev->hci_dev->init_data.gates, st21nfcb_gates, - sizeof(st21nfcb_gates)); - -free_info: - kfree_skb(skb_pipe_info); - kfree_skb(skb_pipe_list); - return r; -} -EXPORT_SYMBOL_GPL(st21nfcb_hci_load_session); - -static void st21nfcb_hci_admin_event_received(struct nci_dev *ndev, - u8 event, struct sk_buff *skb) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - switch (event) { - case ST21NFCB_EVT_HOT_PLUG: - if (info->se_info.se_active) { - if (!ST21NFCB_EVT_HOT_PLUG_IS_INHIBITED(skb)) { - del_timer_sync(&info->se_info.se_active_timer); - info->se_info.se_active = false; - complete(&info->se_info.req_completion); - } else { - mod_timer(&info->se_info.se_active_timer, - jiffies + - msecs_to_jiffies(ST21NFCB_SE_TO_PIPES)); - } - } - break; - } -} - -static int st21nfcb_hci_apdu_reader_event_received(struct nci_dev *ndev, - u8 event, - struct sk_buff *skb) -{ - int r = 0; - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - pr_debug("apdu reader gate event: %x\n", event); - - switch (event) { - case ST21NFCB_EVT_TRANSMIT_DATA: - del_timer_sync(&info->se_info.bwi_timer); - info->se_info.bwi_active = false; - info->se_info.cb(info->se_info.cb_context, - skb->data, skb->len, 0); - break; - case ST21NFCB_EVT_WTX_REQUEST: - mod_timer(&info->se_info.bwi_timer, jiffies + - msecs_to_jiffies(info->se_info.wt_timeout)); - break; - } - - kfree_skb(skb); - return r; -} - -/* - * Returns: - * <= 0: driver handled the event, skb consumed - * 1: driver does not handle the event, please do standard processing - */ -static int st21nfcb_hci_connectivity_event_received(struct nci_dev *ndev, - u8 host, u8 event, - struct sk_buff *skb) -{ - int r = 0; - struct device *dev = &ndev->nfc_dev->dev; - struct nfc_evt_transaction *transaction; - - pr_debug("connectivity gate event: %x\n", event); - - switch (event) { - case ST21NFCB_EVT_CONNECTIVITY: - - break; - case ST21NFCB_EVT_TRANSACTION: - /* According to specification etsi 102 622 - * 11.2.2.4 EVT_TRANSACTION Table 52 - * Description Tag Length - * AID 81 5 to 16 - * PARAMETERS 82 0 to 255 - */ - if (skb->len < NFC_MIN_AID_LENGTH + 2 && - skb->data[0] != NFC_EVT_TRANSACTION_AID_TAG) - return -EPROTO; - - transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev, - skb->len - 2, GFP_KERNEL); - - transaction->aid_len = skb->data[1]; - memcpy(transaction->aid, &skb->data[2], transaction->aid_len); - - /* Check next byte is PARAMETERS tag (82) */ - if (skb->data[transaction->aid_len + 2] != - NFC_EVT_TRANSACTION_PARAMS_TAG) - return -EPROTO; - - transaction->params_len = skb->data[transaction->aid_len + 3]; - memcpy(transaction->params, skb->data + - transaction->aid_len + 4, transaction->params_len); - - r = nfc_se_transaction(ndev->nfc_dev, host, transaction); - break; - default: - return 1; - } - kfree_skb(skb); - return r; -} - -void st21nfcb_hci_event_received(struct nci_dev *ndev, u8 pipe, - u8 event, struct sk_buff *skb) -{ - u8 gate = ndev->hci_dev->pipes[pipe].gate; - u8 host = ndev->hci_dev->pipes[pipe].host; - - switch (gate) { - case NCI_HCI_ADMIN_GATE: - st21nfcb_hci_admin_event_received(ndev, event, skb); - break; - case ST21NFCB_APDU_READER_GATE: - st21nfcb_hci_apdu_reader_event_received(ndev, event, skb); - break; - case ST21NFCB_CONNECTIVITY_GATE: - st21nfcb_hci_connectivity_event_received(ndev, host, event, - skb); - break; - } -} -EXPORT_SYMBOL_GPL(st21nfcb_hci_event_received); - - -void st21nfcb_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd, - struct sk_buff *skb) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - u8 gate = ndev->hci_dev->pipes[pipe].gate; - - pr_debug("cmd: %x\n", cmd); - - switch (cmd) { - case NCI_HCI_ANY_OPEN_PIPE: - if (gate != ST21NFCB_APDU_READER_GATE && - ndev->hci_dev->pipes[pipe].host != ST21NFCB_UICC_HOST_ID) - ndev->hci_dev->count_pipes++; - - if (ndev->hci_dev->count_pipes == - ndev->hci_dev->expected_pipes) { - del_timer_sync(&info->se_info.se_active_timer); - info->se_info.se_active = false; - ndev->hci_dev->count_pipes = 0; - complete(&info->se_info.req_completion); - } - break; - } -} -EXPORT_SYMBOL_GPL(st21nfcb_hci_cmd_received); - -/* - * Remarks: On some early st21nfcb firmware, nci_nfcee_mode_set(0) - * is rejected - */ -static int st21nfcb_nci_control_se(struct nci_dev *ndev, u8 se_idx, - u8 state) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - int r; - struct sk_buff *sk_host_list; - u8 host_id; - - switch (se_idx) { - case ST21NFCB_UICC_HOST_ID: - ndev->hci_dev->count_pipes = 0; - ndev->hci_dev->expected_pipes = ST21NFCB_SE_COUNT_PIPE_UICC; - break; - case ST21NFCB_ESE_HOST_ID: - ndev->hci_dev->count_pipes = 0; - ndev->hci_dev->expected_pipes = ST21NFCB_SE_COUNT_PIPE_EMBEDDED; - break; - default: - return -EINVAL; - } - - /* - * Wait for an EVT_HOT_PLUG in order to - * retrieve a relevant host list. - */ - reinit_completion(&info->se_info.req_completion); - r = nci_nfcee_mode_set(ndev, se_idx, NCI_NFCEE_ENABLE); - if (r != NCI_STATUS_OK) - return r; - - mod_timer(&info->se_info.se_active_timer, jiffies + - msecs_to_jiffies(ST21NFCB_SE_TO_HOT_PLUG)); - info->se_info.se_active = true; - - /* Ignore return value and check in any case the host_list */ - wait_for_completion_interruptible(&info->se_info.req_completion); - - /* There might be some "collision" after receiving a HOT_PLUG event - * This may cause the CLF to not answer to the next hci command. - * There is no possible synchronization to prevent this. - * Adding a small delay is the only way to solve the issue. - */ - usleep_range(3000, 5000); - - r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE, - NCI_HCI_ADMIN_PARAM_HOST_LIST, &sk_host_list); - if (r != NCI_HCI_ANY_OK) - return r; - - host_id = sk_host_list->data[sk_host_list->len - 1]; - kfree_skb(sk_host_list); - if (state == ST21NFCB_SE_MODE_ON && host_id == se_idx) - return se_idx; - else if (state == ST21NFCB_SE_MODE_OFF && host_id != se_idx) - return se_idx; - - return -1; -} - -int st21nfcb_nci_disable_se(struct nci_dev *ndev, u32 se_idx) -{ - int r; - - pr_debug("st21nfcb_nci_disable_se\n"); - - if (se_idx == NFC_SE_EMBEDDED) { - r = nci_hci_send_event(ndev, ST21NFCB_APDU_READER_GATE, - ST21NFCB_EVT_SE_END_OF_APDU_TRANSFER, NULL, 0); - if (r < 0) - return r; - } - - return 0; -} -EXPORT_SYMBOL_GPL(st21nfcb_nci_disable_se); - -int st21nfcb_nci_enable_se(struct nci_dev *ndev, u32 se_idx) -{ - int r; - - pr_debug("st21nfcb_nci_enable_se\n"); - - if (se_idx == ST21NFCB_HCI_HOST_ID_ESE) { - r = nci_hci_send_event(ndev, ST21NFCB_APDU_READER_GATE, - ST21NFCB_EVT_SE_SOFT_RESET, NULL, 0); - if (r < 0) - return r; - } - - return 0; -} -EXPORT_SYMBOL_GPL(st21nfcb_nci_enable_se); - -static int st21nfcb_hci_network_init(struct nci_dev *ndev) -{ - struct core_conn_create_dest_spec_params *dest_params; - struct dest_spec_params spec_params; - struct nci_conn_info *conn_info; - int r, dev_num; - - dest_params = - kzalloc(sizeof(struct core_conn_create_dest_spec_params) + - sizeof(struct dest_spec_params), GFP_KERNEL); - if (dest_params == NULL) { - r = -ENOMEM; - goto exit; - } - - dest_params->type = NCI_DESTINATION_SPECIFIC_PARAM_NFCEE_TYPE; - dest_params->length = sizeof(struct dest_spec_params); - spec_params.id = ndev->hci_dev->nfcee_id; - spec_params.protocol = NCI_NFCEE_INTERFACE_HCI_ACCESS; - memcpy(dest_params->value, &spec_params, sizeof(struct dest_spec_params)); - r = nci_core_conn_create(ndev, NCI_DESTINATION_NFCEE, 1, - sizeof(struct core_conn_create_dest_spec_params) + - sizeof(struct dest_spec_params), - dest_params); - if (r != NCI_STATUS_OK) - goto free_dest_params; - - conn_info = ndev->hci_dev->conn_info; - if (!conn_info) - goto free_dest_params; - - memcpy(ndev->hci_dev->init_data.gates, st21nfcb_gates, - sizeof(st21nfcb_gates)); - - /* - * Session id must include the driver name + i2c bus addr - * persistent info to discriminate 2 identical chips - */ - dev_num = find_first_zero_bit(dev_mask, ST21NFCB_NUM_DEVICES); - if (dev_num >= ST21NFCB_NUM_DEVICES) { - r = -ENODEV; - goto free_dest_params; - } - - scnprintf(ndev->hci_dev->init_data.session_id, - sizeof(ndev->hci_dev->init_data.session_id), - "%s%2x", "ST21BH", dev_num); - - r = nci_hci_dev_session_init(ndev); - if (r != NCI_HCI_ANY_OK) - goto free_dest_params; - - r = nci_nfcee_mode_set(ndev, ndev->hci_dev->conn_info->id, - NCI_NFCEE_ENABLE); - if (r != NCI_STATUS_OK) - goto free_dest_params; - -free_dest_params: - kfree(dest_params); - -exit: - return r; -} - -int st21nfcb_nci_discover_se(struct nci_dev *ndev) -{ - u8 param[2]; - int r; - int se_count = 0; - - pr_debug("st21nfcb_nci_discover_se\n"); - - r = st21nfcb_hci_network_init(ndev); - if (r != 0) - return r; - - param[0] = ST21NFCB_UICC_HOST_ID; - param[1] = ST21NFCB_HCI_HOST_ID_ESE; - r = nci_hci_set_param(ndev, NCI_HCI_ADMIN_GATE, - NCI_HCI_ADMIN_PARAM_WHITELIST, - param, sizeof(param)); - if (r != NCI_HCI_ANY_OK) - return r; - - r = st21nfcb_nci_control_se(ndev, ST21NFCB_UICC_HOST_ID, - ST21NFCB_SE_MODE_ON); - if (r == ST21NFCB_UICC_HOST_ID) { - nfc_add_se(ndev->nfc_dev, ST21NFCB_UICC_HOST_ID, NFC_SE_UICC); - se_count++; - } - - /* Try to enable eSE in order to check availability */ - r = st21nfcb_nci_control_se(ndev, ST21NFCB_HCI_HOST_ID_ESE, - ST21NFCB_SE_MODE_ON); - if (r == ST21NFCB_HCI_HOST_ID_ESE) { - nfc_add_se(ndev->nfc_dev, ST21NFCB_HCI_HOST_ID_ESE, - NFC_SE_EMBEDDED); - se_count++; - st21nfcb_se_get_atr(ndev); - } - - return !se_count; -} -EXPORT_SYMBOL_GPL(st21nfcb_nci_discover_se); - -int st21nfcb_nci_se_io(struct nci_dev *ndev, u32 se_idx, - u8 *apdu, size_t apdu_length, - se_io_cb_t cb, void *cb_context) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - pr_debug("\n"); - - switch (se_idx) { - case ST21NFCB_HCI_HOST_ID_ESE: - info->se_info.cb = cb; - info->se_info.cb_context = cb_context; - mod_timer(&info->se_info.bwi_timer, jiffies + - msecs_to_jiffies(info->se_info.wt_timeout)); - info->se_info.bwi_active = true; - return nci_hci_send_event(ndev, ST21NFCB_APDU_READER_GATE, - ST21NFCB_EVT_TRANSMIT_DATA, apdu, - apdu_length); - default: - return -ENODEV; - } -} -EXPORT_SYMBOL(st21nfcb_nci_se_io); - -static void st21nfcb_se_wt_timeout(unsigned long data) -{ - /* - * No answer from the secure element - * within the defined timeout. - * Let's send a reset request as recovery procedure. - * According to the situation, we first try to send a software reset - * to the secure element. If the next command is still not - * answering in time, we send to the CLF a secure element hardware - * reset request. - */ - /* hardware reset managed through VCC_UICC_OUT power supply */ - u8 param = 0x01; - struct st21nfcb_nci_info *info = (struct st21nfcb_nci_info *) data; - - pr_debug("\n"); - - info->se_info.bwi_active = false; - - if (!info->se_info.xch_error) { - info->se_info.xch_error = true; - nci_hci_send_event(info->ndlc->ndev, ST21NFCB_APDU_READER_GATE, - ST21NFCB_EVT_SE_SOFT_RESET, NULL, 0); - } else { - info->se_info.xch_error = false; - nci_hci_send_event(info->ndlc->ndev, ST21NFCB_DEVICE_MGNT_GATE, - ST21NFCB_EVT_SE_HARD_RESET, ¶m, 1); - } - info->se_info.cb(info->se_info.cb_context, NULL, 0, -ETIME); -} - -static void st21nfcb_se_activation_timeout(unsigned long data) -{ - struct st21nfcb_nci_info *info = (struct st21nfcb_nci_info *) data; - - pr_debug("\n"); - - info->se_info.se_active = false; - - complete(&info->se_info.req_completion); -} - -int st21nfcb_se_init(struct nci_dev *ndev) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - init_completion(&info->se_info.req_completion); - /* initialize timers */ - init_timer(&info->se_info.bwi_timer); - info->se_info.bwi_timer.data = (unsigned long)info; - info->se_info.bwi_timer.function = st21nfcb_se_wt_timeout; - info->se_info.bwi_active = false; - - init_timer(&info->se_info.se_active_timer); - info->se_info.se_active_timer.data = (unsigned long)info; - info->se_info.se_active_timer.function = - st21nfcb_se_activation_timeout; - info->se_info.se_active = false; - - info->se_info.xch_error = false; - - info->se_info.wt_timeout = - ST21NFCB_BWI_TO_TIMEOUT(ST21NFCB_ATR_DEFAULT_BWI); - - return 0; -} -EXPORT_SYMBOL(st21nfcb_se_init); - -void st21nfcb_se_deinit(struct nci_dev *ndev) -{ - struct st21nfcb_nci_info *info = nci_get_drvdata(ndev); - - if (info->se_info.bwi_active) - del_timer_sync(&info->se_info.bwi_timer); - if (info->se_info.se_active) - del_timer_sync(&info->se_info.se_active_timer); - - info->se_info.se_active = false; - info->se_info.bwi_active = false; -} -EXPORT_SYMBOL(st21nfcb_se_deinit); - diff --git a/drivers/nfc/st21nfcb/st21nfcb_se.h b/drivers/nfc/st21nfcb/st21nfcb_se.h deleted file mode 100644 index 52a323872..000000000 --- a/drivers/nfc/st21nfcb/st21nfcb_se.h +++ /dev/null @@ -1,61 +0,0 @@ -/* - * NCI based Driver for STMicroelectronics NFC Chip - * - * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ -#ifndef __LOCAL_ST21NFCB_SE_H_ -#define __LOCAL_ST21NFCB_SE_H_ - -/* - * ref ISO7816-3 chap 8.1. the initial character TS is followed by a - * sequence of at most 32 characters. - */ -#define ST21NFCB_ESE_MAX_LENGTH 33 -#define ST21NFCB_HCI_HOST_ID_ESE 0xc0 - -struct st21nfcb_se_info { - u8 atr[ST21NFCB_ESE_MAX_LENGTH]; - struct completion req_completion; - - struct timer_list bwi_timer; - int wt_timeout; /* in msecs */ - bool bwi_active; - - struct timer_list se_active_timer; - bool se_active; - - bool xch_error; - - se_io_cb_t cb; - void *cb_context; -}; - -int st21nfcb_se_init(struct nci_dev *ndev); -void st21nfcb_se_deinit(struct nci_dev *ndev); - -int st21nfcb_nci_discover_se(struct nci_dev *ndev); -int st21nfcb_nci_enable_se(struct nci_dev *ndev, u32 se_idx); -int st21nfcb_nci_disable_se(struct nci_dev *ndev, u32 se_idx); -int st21nfcb_nci_se_io(struct nci_dev *ndev, u32 se_idx, - u8 *apdu, size_t apdu_length, - se_io_cb_t cb, void *cb_context); -int st21nfcb_hci_load_session(struct nci_dev *ndev); -void st21nfcb_hci_event_received(struct nci_dev *ndev, u8 pipe, - u8 event, struct sk_buff *skb); -void st21nfcb_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd, - struct sk_buff *skb); - - -#endif /* __LOCAL_ST21NFCB_NCI_H_ */ diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index aa6a333b2..85b4d8677 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -149,6 +149,7 @@ */ #define TRF7970A_QUIRK_IRQ_STATUS_READ BIT(0) #define TRF7970A_QUIRK_EN2_MUST_STAY_LOW BIT(1) +#define TRF7970A_QUIRK_T5T_RMB_EXTRA_BYTE BIT(2) /* Direct commands */ #define TRF7970A_CMD_IDLE 0x00 @@ -446,6 +447,7 @@ struct trf7970a { u8 md_rf_tech; u8 tx_cmd; bool issue_eof; + bool adjust_resp_len; int en2_gpio; int en_gpio; struct mutex lock; @@ -626,6 +628,11 @@ static void trf7970a_send_upstream(struct trf7970a *trf) trf->aborting = false; } + if (trf->adjust_resp_len) { + skb_trim(trf->rx_skb, trf->rx_skb->len - 1); + trf->adjust_resp_len = false; + } + trf->cb(trf->ddev, trf->cb_arg, trf->rx_skb); trf->rx_skb = NULL; @@ -1429,10 +1436,15 @@ static int trf7970a_per_cmd_config(struct trf7970a *trf, struct sk_buff *skb) trf->iso_ctrl = iso_ctrl; } - if ((trf->framing == NFC_DIGITAL_FRAMING_ISO15693_T5T) && - trf7970a_is_iso15693_write_or_lock(req[1]) && - (req[0] & ISO15693_REQ_FLAG_OPTION)) - trf->issue_eof = true; + if (trf->framing == NFC_DIGITAL_FRAMING_ISO15693_T5T) { + if (trf7970a_is_iso15693_write_or_lock(req[1]) && + (req[0] & ISO15693_REQ_FLAG_OPTION)) + trf->issue_eof = true; + else if ((trf->quirks & + TRF7970A_QUIRK_T5T_RMB_EXTRA_BYTE) && + (req[1] == ISO15693_CMD_READ_MULTIPLE_BLOCK)) + trf->adjust_resp_len = true; + } } return 0; @@ -1992,6 +2004,9 @@ static int trf7970a_probe(struct spi_device *spi) return ret; } + if (of_property_read_bool(np, "t5t-rmb-extra-byte-quirk")) + trf->quirks |= TRF7970A_QUIRK_T5T_RMB_EXTRA_BYTE; + if (of_property_read_bool(np, "irq-status-read-quirk")) trf->quirks |= TRF7970A_QUIRK_IRQ_STATUS_READ; -- cgit v1.2.3-54-g00ecf