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NFC: 3.15: First pull request

Browse Source 
This is the NFC pull request for 3.15. With this one we have:
 
 - Support for ISO 15693 a.k.a. NFC vicinity a.k.a. Type 5 tags. ISO
   15693 are long range (1 - 2 meters) vicinity tags/cards. The kernel
   now supports those through the NFC netlink and digital APIs.
 
 - Support for TI's trf7970a chipset. This chipset relies on the NFC
   digital layer and the driver currently supports type 2, 4A and 5 tags.
 
 - Support for NXP's pn544 secure firmare download. The pn544 C3 chipsets
   relies on a different firmware download protocal than the C2 one. We
   now support both and use the right one depending on the version we
   detect at runtime.
 
 - Support for 4A tags from the NFC digital layer.
 
 - A bunch of cleanups and minor fixes from Axel Lin and Thierry Escande.
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Merge tag 'nfc-next-3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next

Samuel Ortiz <sameo@linux.intel.com> says:

"NFC: 3.15: First pull request

This is the NFC pull request for 3.15. With this one we have:

- Support for ISO 15693 a.k.a. NFC vicinity a.k.a. Type 5 tags. ISO
  15693 are long range (1 - 2 meters) vicinity tags/cards. The kernel
  now supports those through the NFC netlink and digital APIs.

- Support for TI's trf7970a chipset. This chipset relies on the NFC
  digital layer and the driver currently supports type 2, 4A and 5 tags.

- Support for NXP's pn544 secure firmare download. The pn544 C3 chipsets
  relies on a different firmware download protocal than the C2 one. We
  now support both and use the right one depending on the version we
  detect at runtime.

- Support for 4A tags from the NFC digital layer.

- A bunch of cleanups and minor fixes from Axel Lin and Thierry Escande."

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville 2014-03-17 13:16:50 -04:00
commit 20d83f2464
22 changed files with 1985 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
Documentation/devicetree/bindings/net/nfc/trf7970a.txt Normal file
View File

@ -0,0 +1,34 @@
* Texas Instruments TRF7970A RFID/NFC/15693 Transceiver
Required properties:
- compatible: Should be "ti,trf7970a".
- spi-max-frequency: Maximum SPI frequency (<= 2000000).
- interrupt-parent: phandle of parent interrupt handler.
- interrupts: A single interrupt specifier.
- ti,enable-gpios: Two GPIO entries used for 'EN' and 'EN2' pins on the
TRF7970A.
- vin-supply: Regulator for supply voltage to VIN pin
Optional SoC Specific Properties:
- pinctrl-names: Contains only one value - "default".
- pintctrl-0: Specifies the pin control groups used for this controller.
Example (for ARM-based BeagleBone with TRF7970A on SPI1):
&spi1 {
status = "okay";
nfc@0 {
compatible = "ti,trf7970a";
reg = <0>;
pinctrl-names = "default";
pinctrl-0 = <&trf7970a_default>;
spi-max-frequency = <2000000>;
interrupt-parent = <&gpio2>;
interrupts = <14 0>;
ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>,
<&gpio2 5 GPIO_ACTIVE_LOW>;
vin-supply = <&ldo3_reg>;
status = "okay";
};
};

1
MAINTAINERS
View File

@ -6067,6 +6067,7 @@ F: include/net/nfc/
F: include/uapi/linux/nfc.h
F: drivers/nfc/
F: include/linux/platform_data/pn544.h
F: Documentation/devicetree/bindings/net/nfc/
NFS, SUNRPC, AND LOCKD CLIENTS
M: Trond Myklebust <trond.myklebust@primarydata.com>

12
drivers/nfc/Kconfig
View File

@ -26,6 +26,18 @@ config NFC_WILINK
Say Y here to compile support for Texas Instrument's NFC WiLink driver
into the kernel or say M to compile it as module.
config NFC_TRF7970A
tristate "Texas Instruments TRF7970a NFC driver"
depends on SPI && NFC_DIGITAL
help
This option enables the NFC driver for Texas Instruments' TRF7970a
device. Such device supports 5 different protocols: ISO14443A,
ISO14443B, FeLiCa, ISO15693 and ISO18000-3.
Say Y here to compile support for TRF7970a into the kernel or
say M to compile it as a module. The module will be called
trf7970a.ko.
config NFC_MEI_PHY
tristate "MEI bus NFC device support"
depends on INTEL_MEI && NFC_HCI

1
drivers/nfc/Makefile
View File

@ -10,5 +10,6 @@ obj-$(CONFIG_NFC_MEI_PHY) += mei_phy.o
obj-$(CONFIG_NFC_SIM) += nfcsim.o
obj-$(CONFIG_NFC_PORT100) += port100.o
obj-$(CONFIG_NFC_MRVL) += nfcmrvl/
obj-$(CONFIG_NFC_TRF7970A) += trf7970a.o
ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG

28
drivers/nfc/pn533.c
View File

@ -55,26 +55,14 @@
NFC_PROTO_NFC_DEP_MASK)
static const struct usb_device_id pn533_table[] = {
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = PN533_VENDOR_ID,
.idProduct = PN533_PRODUCT_ID,
.driver_info = PN533_DEVICE_STD,
},
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = SCM_VENDOR_ID,
.idProduct = SCL3711_PRODUCT_ID,
.driver_info = PN533_DEVICE_STD,
},
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = SONY_VENDOR_ID,
.idProduct = PASORI_PRODUCT_ID,
.driver_info = PN533_DEVICE_PASORI,
},
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = ACS_VENDOR_ID,
.idProduct = ACR122U_PRODUCT_ID,
.driver_info = PN533_DEVICE_ACR122U,
},
{ USB_DEVICE(PN533_VENDOR_ID, PN533_PRODUCT_ID),
.driver_info = PN533_DEVICE_STD },
{ USB_DEVICE(SCM_VENDOR_ID, SCL3711_PRODUCT_ID),
.driver_info = PN533_DEVICE_STD },
{ USB_DEVICE(SONY_VENDOR_ID, PASORI_PRODUCT_ID),
.driver_info = PN533_DEVICE_PASORI },
{ USB_DEVICE(ACS_VENDOR_ID, ACR122U_PRODUCT_ID),
.driver_info = PN533_DEVICE_ACR122U },
{ }
};
MODULE_DEVICE_TABLE(usb, pn533_table);

194
drivers/nfc/pn544/i2c.c
View File

@ -58,8 +58,19 @@ MODULE_DEVICE_TABLE(i2c, pn544_hci_i2c_id_table);
#define PN544_HCI_I2C_DRIVER_NAME "pn544_hci_i2c"
/*
* Exposed through the 4 most significant bytes
* from the HCI SW_VERSION first byte, a.k.a.
* SW RomLib.
*/
#define PN544_HW_VARIANT_C2 0xa
#define PN544_HW_VARIANT_C3 0xb
#define PN544_FW_CMD_RESET 0x01
#define PN544_FW_CMD_WRITE 0x08
#define PN544_FW_CMD_CHECK 0x06
#define PN544_FW_CMD_SECURE_WRITE 0x0C
#define PN544_FW_CMD_SECURE_CHUNK_WRITE 0x0D
struct pn544_i2c_fw_frame_write {
u8 cmd;
@ -88,13 +99,31 @@ struct pn544_i2c_fw_blob {
u8 data[];
};
struct pn544_i2c_fw_secure_frame {
u8 cmd;
u16 be_datalen;
u8 data[];
} __packed;
struct pn544_i2c_fw_secure_blob {
u64 header;
u8 data[];
};
#define PN544_FW_CMD_RESULT_TIMEOUT 0x01
#define PN544_FW_CMD_RESULT_BAD_CRC 0x02
#define PN544_FW_CMD_RESULT_ACCESS_DENIED 0x08
#define PN544_FW_CMD_RESULT_PROTOCOL_ERROR 0x0B
#define PN544_FW_CMD_RESULT_INVALID_PARAMETER 0x11
#define PN544_FW_CMD_RESULT_UNSUPPORTED_COMMAND 0x13
#define PN544_FW_CMD_RESULT_INVALID_LENGTH 0x18
#define PN544_FW_CMD_RESULT_CRYPTOGRAPHIC_ERROR 0x19
#define PN544_FW_CMD_RESULT_VERSION_CONDITIONS_ERROR 0x1D
#define PN544_FW_CMD_RESULT_MEMORY_ERROR 0x20
#define PN544_FW_CMD_RESULT_CHUNK_OK 0x21
#define PN544_FW_CMD_RESULT_WRITE_FAILED 0x74
#define PN544_FW_CMD_RESULT_COMMAND_REJECTED 0xE0
#define PN544_FW_CMD_RESULT_CHUNK_ERROR 0xE6
#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
@ -104,11 +133,17 @@ struct pn544_i2c_fw_blob {
#define PN544_FW_I2C_WRITE_DATA_MAX_LEN MIN((PN544_FW_I2C_MAX_PAYLOAD -\
PN544_FW_I2C_WRITE_FRAME_HEADER_LEN),\
PN544_FW_WRITE_BUFFER_MAX_LEN)
#define PN544_FW_SECURE_CHUNK_WRITE_HEADER_LEN 3
#define PN544_FW_SECURE_CHUNK_WRITE_DATA_MAX_LEN (PN544_FW_I2C_MAX_PAYLOAD -\
PN544_FW_SECURE_CHUNK_WRITE_HEADER_LEN)
#define PN544_FW_SECURE_FRAME_HEADER_LEN 3
#define PN544_FW_SECURE_BLOB_HEADER_LEN 8
#define FW_WORK_STATE_IDLE 1
#define FW_WORK_STATE_START 2
#define FW_WORK_STATE_WAIT_WRITE_ANSWER 3
#define FW_WORK_STATE_WAIT_CHECK_ANSWER 4
#define FW_WORK_STATE_WAIT_SECURE_WRITE_ANSWER 5
struct pn544_i2c_phy {
struct i2c_client *i2c_dev;
@ -119,6 +154,8 @@ struct pn544_i2c_phy {
unsigned int gpio_fw;
unsigned int en_polarity;
u8 hw_variant;
struct work_struct fw_work;
int fw_work_state;
char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
@ -127,6 +164,8 @@ struct pn544_i2c_phy {
size_t fw_blob_size;
const u8 *fw_blob_data;
size_t fw_written;
size_t fw_size;
int fw_cmd_result;
int powered;
@ -390,6 +429,8 @@ static int pn544_hci_i2c_fw_read_status(struct pn544_i2c_phy *phy)
switch (response.status) {
case 0:
return 0;
case PN544_FW_CMD_RESULT_CHUNK_OK:
return response.status;
case PN544_FW_CMD_RESULT_TIMEOUT:
return -ETIMEDOUT;
case PN544_FW_CMD_RESULT_BAD_CRC:
@ -400,9 +441,20 @@ static int pn544_hci_i2c_fw_read_status(struct pn544_i2c_phy *phy)
return -EPROTO;
case PN544_FW_CMD_RESULT_INVALID_PARAMETER:
return -EINVAL;
case PN544_FW_CMD_RESULT_UNSUPPORTED_COMMAND:
return -ENOTSUPP;
case PN544_FW_CMD_RESULT_INVALID_LENGTH:
return -EBADMSG;
case PN544_FW_CMD_RESULT_CRYPTOGRAPHIC_ERROR:
return -ENOKEY;
case PN544_FW_CMD_RESULT_VERSION_CONDITIONS_ERROR:
return -EINVAL;
case PN544_FW_CMD_RESULT_MEMORY_ERROR:
return -ENOMEM;
case PN544_FW_CMD_RESULT_COMMAND_REJECTED:
return -EACCES;
case PN544_FW_CMD_RESULT_WRITE_FAILED:
case PN544_FW_CMD_RESULT_CHUNK_ERROR:
return -EIO;
default:
return -EIO;
@ -469,7 +521,8 @@ static struct nfc_phy_ops i2c_phy_ops = {
.disable = pn544_hci_i2c_disable,
};
static int pn544_hci_i2c_fw_download(void *phy_id, const char *firmware_name)
static int pn544_hci_i2c_fw_download(void *phy_id, const char *firmware_name,
u8 hw_variant)
{
struct pn544_i2c_phy *phy = phy_id;
@ -477,6 +530,7 @@ static int pn544_hci_i2c_fw_download(void *phy_id, const char *firmware_name)
strcpy(phy->firmware_name, firmware_name);
phy->hw_variant = hw_variant;
phy->fw_work_state = FW_WORK_STATE_START;
schedule_work(&phy->fw_work);
@ -598,12 +652,93 @@ static int pn544_hci_i2c_fw_write_chunk(struct pn544_i2c_phy *phy)
return 0;
}
static int pn544_hci_i2c_fw_secure_write_frame_cmd(struct pn544_i2c_phy *phy,
const u8 *data, u16 datalen)
{
u8 buf[PN544_FW_I2C_MAX_PAYLOAD];
struct pn544_i2c_fw_secure_frame *chunk;
int chunklen;
int r;
if (datalen > PN544_FW_SECURE_CHUNK_WRITE_DATA_MAX_LEN)
datalen = PN544_FW_SECURE_CHUNK_WRITE_DATA_MAX_LEN;
chunk = (struct pn544_i2c_fw_secure_frame *) buf;
chunk->cmd = PN544_FW_CMD_SECURE_CHUNK_WRITE;
put_unaligned_be16(datalen, &chunk->be_datalen);
memcpy(chunk->data, data, datalen);
chunklen = sizeof(chunk->cmd) + sizeof(chunk->be_datalen) + datalen;
r = i2c_master_send(phy->i2c_dev, buf, chunklen);
if (r == chunklen)
return datalen;
else if (r < 0)
return r;
else
return -EIO;
}
static int pn544_hci_i2c_fw_secure_write_frame(struct pn544_i2c_phy *phy)
{
struct pn544_i2c_fw_secure_frame *framep;
int r;
framep = (struct pn544_i2c_fw_secure_frame *) phy->fw_blob_data;
if (phy->fw_written == 0)
phy->fw_blob_size = get_unaligned_be16(&framep->be_datalen)
+ PN544_FW_SECURE_FRAME_HEADER_LEN;
/* Only secure write command can be chunked*/
if (phy->fw_blob_size > PN544_FW_I2C_MAX_PAYLOAD &&
framep->cmd != PN544_FW_CMD_SECURE_WRITE)
return -EINVAL;
/* The firmware also have other commands, we just send them directly */
if (phy->fw_blob_size < PN544_FW_I2C_MAX_PAYLOAD) {
r = i2c_master_send(phy->i2c_dev,
(const char *) phy->fw_blob_data, phy->fw_blob_size);
if (r == phy->fw_blob_size)
goto exit;
else if (r < 0)
return r;
else
return -EIO;
}
r = pn544_hci_i2c_fw_secure_write_frame_cmd(phy,
phy->fw_blob_data + phy->fw_written,
phy->fw_blob_size - phy->fw_written);
if (r < 0)
return r;
exit:
phy->fw_written += r;
phy->fw_work_state = FW_WORK_STATE_WAIT_SECURE_WRITE_ANSWER;
/* SW reset command will not trig any response from PN544 */
if (framep->cmd == PN544_FW_CMD_RESET) {
pn544_hci_i2c_enable_mode(phy, PN544_FW_MODE);
phy->fw_cmd_result = 0;
schedule_work(&phy->fw_work);
}
return 0;
}
static void pn544_hci_i2c_fw_work(struct work_struct *work)
{
struct pn544_i2c_phy *phy = container_of(work, struct pn544_i2c_phy,
fw_work);
int r;
struct pn544_i2c_fw_blob *blob;
struct pn544_i2c_fw_secure_blob *secure_blob;
switch (phy->fw_work_state) {
case FW_WORK_STATE_START:
@ -614,13 +749,29 @@ static void pn544_hci_i2c_fw_work(struct work_struct *work)
if (r < 0)
goto exit_state_start;
blob = (struct pn544_i2c_fw_blob *) phy->fw->data;
phy->fw_blob_size = get_unaligned_be32(&blob->be_size);
phy->fw_blob_dest_addr = get_unaligned_be32(&blob->be_destaddr);
phy->fw_blob_data = blob->data;
phy->fw_written = 0;
r = pn544_hci_i2c_fw_write_chunk(phy);
switch (phy->hw_variant) {
case PN544_HW_VARIANT_C2:
blob = (struct pn544_i2c_fw_blob *) phy->fw->data;
phy->fw_blob_size = get_unaligned_be32(&blob->be_size);
phy->fw_blob_dest_addr = get_unaligned_be32(
&blob->be_destaddr);
phy->fw_blob_data = blob->data;
r = pn544_hci_i2c_fw_write_chunk(phy);
break;
case PN544_HW_VARIANT_C3:
secure_blob = (struct pn544_i2c_fw_secure_blob *)
phy->fw->data;
phy->fw_blob_data = secure_blob->data;
phy->fw_size = phy->fw->size;
r = pn544_hci_i2c_fw_secure_write_frame(phy);
break;
default:
r = -ENOTSUPP;
break;
}
exit_state_start:
if (r < 0)
@ -672,6 +823,35 @@ exit_state_wait_check_answer:
pn544_hci_i2c_fw_work_complete(phy, r);
break;
case FW_WORK_STATE_WAIT_SECURE_WRITE_ANSWER:
r = phy->fw_cmd_result;
if (r < 0)
goto exit_state_wait_secure_write_answer;
if (r == PN544_FW_CMD_RESULT_CHUNK_OK) {
r = pn544_hci_i2c_fw_secure_write_frame(phy);
goto exit_state_wait_secure_write_answer;
}
if (phy->fw_written == phy->fw_blob_size) {
secure_blob = (struct pn544_i2c_fw_secure_blob *)
(phy->fw_blob_data + phy->fw_blob_size);
phy->fw_size -= phy->fw_blob_size +
PN544_FW_SECURE_BLOB_HEADER_LEN;
if (phy->fw_size >= PN544_FW_SECURE_BLOB_HEADER_LEN
+ PN544_FW_SECURE_FRAME_HEADER_LEN) {
phy->fw_blob_data = secure_blob->data;
phy->fw_written = 0;
r = pn544_hci_i2c_fw_secure_write_frame(phy);
}
}
exit_state_wait_secure_write_answer:
if (r < 0 || phy->fw_size == 0)
pn544_hci_i2c_fw_work_complete(phy, r);
break;
default:
break;
}

2
drivers/nfc/pn544/pn544.c
View File

@ -786,7 +786,7 @@ static int pn544_hci_fw_download(struct nfc_hci_dev *hdev,
if (info->fw_download == NULL)
return -ENOTSUPP;
return info->fw_download(info->phy_id, firmware_name);
return info->fw_download(info->phy_id, firmware_name, hdev->sw_romlib);
}
static int pn544_hci_discover_se(struct nfc_hci_dev *hdev)

3
drivers/nfc/pn544/pn544.h
View File

@ -25,7 +25,8 @@
#define PN544_HCI_MODE 0
#define PN544_FW_MODE 1
typedef int (*fw_download_t)(void *context, const char *firmware_name);
typedef int (*fw_download_t)(void *context, const char *firmware_name,
u8 hw_variant);
int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
int phy_headroom, int phy_tailroom, int phy_payload,

25
drivers/nfc/port100.c
View File

@ -27,7 +27,8 @@
#define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
NFC_PROTO_MIFARE_MASK | \
NFC_PROTO_FELICA_MASK | \
NFC_PROTO_NFC_DEP_MASK)
NFC_PROTO_NFC_DEP_MASK | \
NFC_PROTO_ISO14443_MASK)
#define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \
NFC_DIGITAL_DRV_CAPS_TG_CRC)
@ -139,6 +140,8 @@ static const struct port100_in_rf_setting in_rf_settings[] = {
.in_recv_set_number = 15,
.in_recv_comm_type = PORT100_COMM_TYPE_IN_106A,
},
/* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */
[NFC_DIGITAL_RF_TECH_LAST] = { 0 },
};
/**
@ -174,6 +177,9 @@ static const struct port100_tg_rf_setting tg_rf_settings[] = {
.tg_set_number = 8,
.tg_comm_type = PORT100_COMM_TYPE_TG_424F,
},
/* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */
[NFC_DIGITAL_RF_TECH_LAST] = { 0 },
};
#define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00
@ -293,6 +299,10 @@ in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = {
{ PORT100_IN_PROT_CHECK_CRC, 0 },
{ PORT100_IN_PROT_END, 0 },
},
[NFC_DIGITAL_FRAMING_NFCA_T4T] = {
/* nfc_digital_framing_nfca_standard_with_crc_a */
{ PORT100_IN_PROT_END, 0 },
},
[NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = {
/* nfc_digital_framing_nfca_standard */
{ PORT100_IN_PROT_END, 0 },
@ -330,6 +340,10 @@ in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = {
[NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = {
{ PORT100_IN_PROT_END, 0 },
},
/* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */
[NFC_DIGITAL_FRAMING_LAST] = {
{ PORT100_IN_PROT_END, 0 },
},
};
static struct port100_protocol
@ -371,6 +385,10 @@ tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = {
{ PORT100_TG_PROT_RF_OFF, 1 },
{ PORT100_TG_PROT_END, 0 },
},
/* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */
[NFC_DIGITAL_FRAMING_LAST] = {
{ PORT100_TG_PROT_END, 0 },
},
};
struct port100 {
@ -1356,10 +1374,7 @@ static struct nfc_digital_ops port100_digital_ops = {
};
static const struct usb_device_id port100_table[] = {
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = SONY_VENDOR_ID,
.idProduct = RCS380_PRODUCT_ID,
},
{ USB_DEVICE(SONY_VENDOR_ID, RCS380_PRODUCT_ID), },
{ }
};
MODULE_DEVICE_TABLE(usb, port100_table);

1370
drivers/nfc/trf7970a.c Normal file
View File

File diff suppressed because it is too large Load Diff

7
include/net/nfc/digital.h
View File

@ -35,6 +35,7 @@ enum {
NFC_DIGITAL_RF_TECH_106A = 0,
NFC_DIGITAL_RF_TECH_212F,
NFC_DIGITAL_RF_TECH_424F,
NFC_DIGITAL_RF_TECH_ISO15693,
NFC_DIGITAL_RF_TECH_LAST,
};
@ -50,6 +51,7 @@ enum {
NFC_DIGITAL_FRAMING_NFCA_T1T,
NFC_DIGITAL_FRAMING_NFCA_T2T,
NFC_DIGITAL_FRAMING_NFCA_T4T,
NFC_DIGITAL_FRAMING_NFCA_NFC_DEP,
NFC_DIGITAL_FRAMING_NFCF,
@ -57,6 +59,9 @@ enum {
NFC_DIGITAL_FRAMING_NFCF_NFC_DEP,
NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED,
NFC_DIGITAL_FRAMING_ISO15693_INVENTORY,
NFC_DIGITAL_FRAMING_ISO15693_T5T,
NFC_DIGITAL_FRAMING_LAST,
};
@ -204,6 +209,8 @@ struct nfc_digital_dev {
u8 curr_rf_tech;
u8 curr_nfc_dep_pni;
u16 target_fsc;
int (*skb_check_crc)(struct sk_buff *skb);
void (*skb_add_crc)(struct sk_buff *skb);
};

3
include/net/nfc/nfc.h
View File

@ -111,6 +111,9 @@ struct nfc_target {
u8 sensf_res[NFC_SENSF_RES_MAXSIZE];
u8 hci_reader_gate;
u8 logical_idx;
u8 is_iso15693;
u8 iso15693_dsfid;
u8 iso15693_uid[NFC_ISO15693_UID_MAXSIZE];
};
/**

9
include/uapi/linux/nfc.h
View File

@ -150,6 +150,8 @@ enum nfc_commands {
* @NFC_ATTR_SE_TYPE: Secure element type (UICC or EMBEDDED)
* @NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS: Firmware download operation status
* @NFC_ATTR_APDU: Secure element APDU
* @NFC_ATTR_TARGET_ISO15693_DSFID: ISO 15693 Data Storage Format Identifier
* @NFC_ATTR_TARGET_ISO15693_UID: ISO 15693 Unique Identifier
*/
enum nfc_attrs {
NFC_ATTR_UNSPEC,
@ -178,6 +180,8 @@ enum nfc_attrs {
NFC_ATTR_SE_AID,
NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS,
NFC_ATTR_SE_APDU,
NFC_ATTR_TARGET_ISO15693_DSFID,
NFC_ATTR_TARGET_ISO15693_UID,
/* private: internal use only */
__NFC_ATTR_AFTER_LAST
};
@ -200,6 +204,7 @@ enum nfc_sdp_attr {
#define NFC_SENSF_RES_MAXSIZE 18
#define NFC_GB_MAXSIZE 48
#define NFC_FIRMWARE_NAME_MAXSIZE 32
#define NFC_ISO15693_UID_MAXSIZE 8
/* NFC protocols */
#define NFC_PROTO_JEWEL 1
@ -208,8 +213,9 @@ enum nfc_sdp_attr {
#define NFC_PROTO_ISO14443 4
#define NFC_PROTO_NFC_DEP 5
#define NFC_PROTO_ISO14443_B 6
#define NFC_PROTO_ISO15693 7
#define NFC_PROTO_MAX 7
#define NFC_PROTO_MAX 8
/* NFC communication modes */
#define NFC_COMM_ACTIVE 0
@ -227,6 +233,7 @@ enum nfc_sdp_attr {
#define NFC_PROTO_ISO14443_MASK (1 << NFC_PROTO_ISO14443)
#define NFC_PROTO_NFC_DEP_MASK (1 << NFC_PROTO_NFC_DEP)
#define NFC_PROTO_ISO14443_B_MASK (1 << NFC_PROTO_ISO14443_B)
#define NFC_PROTO_ISO15693_MASK (1 << NFC_PROTO_ISO15693)
/* NFC Secure Elements */
#define NFC_SE_UICC 0x1

10
net/nfc/core.c
View File

@ -280,9 +280,6 @@ static struct nfc_target *nfc_find_target(struct nfc_dev *dev, u32 target_idx)
{
int i;
if (dev->n_targets == 0)
return NULL;
for (i = 0; i < dev->n_targets; i++) {
if (dev->targets[i].idx == target_idx)
return &dev->targets[i];
@ -546,9 +543,9 @@ error:
struct nfc_se *nfc_find_se(struct nfc_dev *dev, u32 se_idx)
{
struct nfc_se *se, *n;
struct nfc_se *se;
list_for_each_entry_safe(se, n, &dev->secure_elements, list)
list_for_each_entry(se, &dev->secure_elements, list)
if (se->idx == se_idx)
return se;
@ -655,9 +652,6 @@ int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len)
{
pr_debug("dev_name=%s gb_len=%d\n", dev_name(&dev->dev), gb_len);
if (gb_len > NFC_MAX_GT_LEN)
return -EINVAL;
return nfc_llcp_set_remote_gb(dev, gb, gb_len);
}
EXPORT_SYMBOL(nfc_set_remote_general_bytes);

6
net/nfc/digital.h
View File

@ -72,6 +72,12 @@ void digital_poll_next_tech(struct nfc_digital_dev *ddev);
int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_iso_dep_pull_sod(struct nfc_digital_dev *ddev,
struct sk_buff *skb);
int digital_in_iso_dep_push_sod(struct nfc_digital_dev *ddev,
struct sk_buff *skb);
int digital_target_found(struct nfc_digital_dev *ddev,
struct nfc_target *target, u8 protocol);

67
net/nfc/digital_core.c
View File

@ -25,6 +25,8 @@
#define DIGITAL_PROTO_NFCF_RF_TECH \
(NFC_PROTO_FELICA_MASK | NFC_PROTO_NFC_DEP_MASK)
#define DIGITAL_PROTO_ISO15693_RF_TECH NFC_PROTO_ISO15693_MASK
struct digital_cmd {
struct list_head queue;
@ -331,6 +333,18 @@ int digital_target_found(struct nfc_digital_dev *ddev,
}
break;
case NFC_PROTO_ISO15693:
framing = NFC_DIGITAL_FRAMING_ISO15693_T5T;
check_crc = digital_skb_check_crc_b;
add_crc = digital_skb_add_crc_b;
break;
case NFC_PROTO_ISO14443:
framing = NFC_DIGITAL_FRAMING_NFCA_T4T;
check_crc = digital_skb_check_crc_a;
add_crc = digital_skb_add_crc_a;
break;
default:
pr_err("Invalid protocol %d\n", protocol);
return -EINVAL;
@ -461,7 +475,7 @@ static int digital_start_poll(struct nfc_dev *nfc_dev, __u32 im_protocols,
digital_add_poll_tech(ddev, NFC_DIGITAL_RF_TECH_106A,
digital_in_send_sens_req);
if (im_protocols & DIGITAL_PROTO_NFCF_RF_TECH) {
if (matching_im_protocols & DIGITAL_PROTO_NFCF_RF_TECH) {
digital_add_poll_tech(ddev, NFC_DIGITAL_RF_TECH_212F,
digital_in_send_sensf_req);
@ -469,7 +483,11 @@ static int digital_start_poll(struct nfc_dev *nfc_dev, __u32 im_protocols,
digital_in_send_sensf_req);
}
if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
if (matching_im_protocols & DIGITAL_PROTO_ISO15693_RF_TECH)
digital_add_poll_tech(ddev, NFC_DIGITAL_RF_TECH_ISO15693,
digital_in_send_iso15693_inv_req);
if (matching_tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
if (ddev->ops->tg_listen_mdaa) {
digital_add_poll_tech(ddev, 0,
digital_tg_listen_mdaa);
@ -607,20 +625,30 @@ static void digital_in_send_complete(struct nfc_digital_dev *ddev, void *arg,
if (IS_ERR(resp)) {
rc = PTR_ERR(resp);
resp = NULL;
goto done;
}
if (ddev->curr_protocol == NFC_PROTO_MIFARE)
if (ddev->curr_protocol == NFC_PROTO_MIFARE) {
rc = digital_in_recv_mifare_res(resp);
else
rc = ddev->skb_check_crc(resp);
/* crc check is done in digital_in_recv_mifare_res() */
goto done;
}
if (ddev->curr_protocol == NFC_PROTO_ISO14443) {
rc = digital_in_iso_dep_pull_sod(ddev, resp);
if (rc)
goto done;
}
rc = ddev->skb_check_crc(resp);
done:
if (rc) {
kfree_skb(resp);
resp = NULL;
}
done:
data_exch->cb(data_exch->cb_context, resp, rc);
kfree(data_exch);
@ -632,6 +660,7 @@ static int digital_in_send(struct nfc_dev *nfc_dev, struct nfc_target *target,
{
struct nfc_digital_dev *ddev = nfc_get_drvdata(nfc_dev);
struct digital_data_exch *data_exch;
int rc;
data_exch = kzalloc(sizeof(struct digital_data_exch), GFP_KERNEL);
if (!data_exch) {
@ -642,13 +671,27 @@ static int digital_in_send(struct nfc_dev *nfc_dev, struct nfc_target *target,
data_exch->cb = cb;
data_exch->cb_context = cb_context;
if (ddev->curr_protocol == NFC_PROTO_NFC_DEP)
return digital_in_send_dep_req(ddev, target, skb, data_exch);
if (ddev->curr_protocol == NFC_PROTO_NFC_DEP) {
rc = digital_in_send_dep_req(ddev, target, skb, data_exch);
goto exit;
}
if (ddev->curr_protocol == NFC_PROTO_ISO14443) {
rc = digital_in_iso_dep_push_sod(ddev, skb);
if (rc)
goto exit;
}
ddev->skb_add_crc(skb);
return digital_in_send_cmd(ddev, skb, 500, digital_in_send_complete,
data_exch);
rc = digital_in_send_cmd(ddev, skb, 500, digital_in_send_complete,
data_exch);
exit:
if (rc)
kfree(data_exch);
return rc;
}
static struct nfc_ops digital_nfc_ops = {
@ -700,6 +743,10 @@ struct nfc_digital_dev *nfc_digital_allocate_device(struct nfc_digital_ops *ops,
ddev->protocols |= NFC_PROTO_FELICA_MASK;
if (supported_protocols & NFC_PROTO_NFC_DEP_MASK)
ddev->protocols |= NFC_PROTO_NFC_DEP_MASK;
if (supported_protocols & NFC_PROTO_ISO15693_MASK)
ddev->protocols |= NFC_PROTO_ISO15693_MASK;
if (supported_protocols & NFC_PROTO_ISO14443_MASK)
ddev->protocols |= NFC_PROTO_ISO14443_MASK;
ddev->tx_headroom = tx_headroom + DIGITAL_MAX_HEADER_LEN;
ddev->tx_tailroom = tx_tailroom + DIGITAL_CRC_LEN;

247
net/nfc/digital_technology.c
View File

@ -30,6 +30,7 @@
#define DIGITAL_SEL_RES_NFCID1_COMPLETE(sel_res) (!((sel_res) & 0x04))
#define DIGITAL_SEL_RES_IS_T2T(sel_res) (!((sel_res) & 0x60))
#define DIGITAL_SEL_RES_IS_T4T(sel_res) ((sel_res) & 0x20)
#define DIGITAL_SEL_RES_IS_NFC_DEP(sel_res) ((sel_res) & 0x40)
#define DIGITAL_SENS_RES_IS_T1T(sens_res) (((sens_res) & 0x0C00) == 0x0C00)
@ -51,6 +52,34 @@
#define DIGITAL_SENSF_REQ_RC_SC 1
#define DIGITAL_SENSF_REQ_RC_AP 2
#define DIGITAL_CMD_ISO15693_INVENTORY_REQ 0x01
#define DIGITAL_ISO15693_REQ_FLAG_DATA_RATE BIT(1)
#define DIGITAL_ISO15693_REQ_FLAG_INVENTORY BIT(2)
#define DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS BIT(5)
#define DIGITAL_ISO15693_RES_FLAG_ERROR BIT(0)
#define DIGITAL_ISO15693_RES_IS_VALID(flags) \
(!((flags) & DIGITAL_ISO15693_RES_FLAG_ERROR))
#define DIGITAL_ISO_DEP_I_PCB 0x02
#define DIGITAL_ISO_DEP_PNI(pni) ((pni) & 0x01)
#define DIGITAL_ISO_DEP_PCB_TYPE(pcb) ((pcb) & 0xC0)
#define DIGITAL_ISO_DEP_I_BLOCK 0x00
#define DIGITAL_ISO_DEP_BLOCK_HAS_DID(pcb) ((pcb) & 0x08)
static const u8 digital_ats_fsc[] = {
16, 24, 32, 40, 48, 64, 96, 128,
};
#define DIGITAL_ATS_FSCI(t0) ((t0) & 0x0F)
#define DIGITAL_ATS_MAX_FSC 256
#define DIGITAL_RATS_BYTE1 0xE0
#define DIGITAL_RATS_PARAM 0x80
struct digital_sdd_res {
u8 nfcid1[4];
u8 bcc;
@ -82,9 +111,127 @@ struct digital_sensf_res {
u8 rd[2];
} __packed;
struct digital_iso15693_inv_req {
u8 flags;
u8 cmd;
u8 mask_len;
u64 mask;
} __packed;
struct digital_iso15693_inv_res {
u8 flags;
u8 dsfid;
u64 uid;
} __packed;
static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev,
struct nfc_target *target);
int digital_in_iso_dep_pull_sod(struct nfc_digital_dev *ddev,
struct sk_buff *skb)
{
u8 pcb;
u8 block_type;
if (skb->len < 1)
return -EIO;
pcb = *skb->data;
block_type = DIGITAL_ISO_DEP_PCB_TYPE(pcb);
/* No support fo R-block nor S-block */
if (block_type != DIGITAL_ISO_DEP_I_BLOCK) {
pr_err("ISO_DEP R-block and S-block not supported\n");
return -EIO;
}
if (DIGITAL_ISO_DEP_BLOCK_HAS_DID(pcb)) {
pr_err("DID field in ISO_DEP PCB not supported\n");
return -EIO;
}
skb_pull(skb, 1);
return 0;
}
int digital_in_iso_dep_push_sod(struct nfc_digital_dev *ddev,
struct sk_buff *skb)
{
/*
* Chaining not supported so skb->len + 1 PCB byte + 2 CRC bytes must
* not be greater than remote FSC
*/
if (skb->len + 3 > ddev->target_fsc)
return -EIO;
skb_push(skb, 1);
*skb->data = DIGITAL_ISO_DEP_I_PCB | ddev->curr_nfc_dep_pni;
ddev->curr_nfc_dep_pni =
DIGITAL_ISO_DEP_PNI(ddev->curr_nfc_dep_pni + 1);
return 0;
}
static void digital_in_recv_ats(struct nfc_digital_dev *ddev, void *arg,
struct sk_buff *resp)
{
struct nfc_target *target = arg;
u8 fsdi;
int rc;
if (IS_ERR(resp)) {
rc = PTR_ERR(resp);
resp = NULL;
goto exit;
}
if (resp->len < 2) {
rc = -EIO;
goto exit;
}
fsdi = DIGITAL_ATS_FSCI(resp->data[1]);
if (fsdi >= 8)
ddev->target_fsc = DIGITAL_ATS_MAX_FSC;
else
ddev->target_fsc = digital_ats_fsc[fsdi];
ddev->curr_nfc_dep_pni = 0;
rc = digital_target_found(ddev, target, NFC_PROTO_ISO14443);
exit:
dev_kfree_skb(resp);
kfree(target);
if (rc)
digital_poll_next_tech(ddev);
}
static int digital_in_send_rats(struct nfc_digital_dev *ddev,
struct nfc_target *target)
{
int rc;
struct sk_buff *skb;
skb = digital_skb_alloc(ddev, 2);
if (!skb)
return -ENOMEM;
*skb_put(skb, 1) = DIGITAL_RATS_BYTE1;
*skb_put(skb, 1) = DIGITAL_RATS_PARAM;
rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_ats,
target);
if (rc)
kfree_skb(skb);
return rc;
}
static void digital_in_recv_sel_res(struct nfc_digital_dev *ddev, void *arg,
struct sk_buff *resp)
{
@ -122,8 +269,19 @@ static void digital_in_recv_sel_res(struct nfc_digital_dev *ddev, void *arg,
goto exit_free_skb;
}
target->sel_res = sel_res;
if (DIGITAL_SEL_RES_IS_T2T(sel_res)) {
nfc_proto = NFC_PROTO_MIFARE;
} else if (DIGITAL_SEL_RES_IS_T4T(sel_res)) {
rc = digital_in_send_rats(ddev, target);
if (rc)
goto exit;
/*
* Skip target_found and don't free it for now. This will be
* done when receiving the ATS
*/
goto exit_free_skb;
} else if (DIGITAL_SEL_RES_IS_NFC_DEP(sel_res)) {
nfc_proto = NFC_PROTO_NFC_DEP;
} else {
@ -131,8 +289,6 @@ static void digital_in_recv_sel_res(struct nfc_digital_dev *ddev, void *arg,
goto exit;
}
target->sel_res = sel_res;
rc = digital_target_found(ddev, target, nfc_proto);
exit:
@ -473,6 +629,93 @@ int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech)
return rc;
}
static void digital_in_recv_iso15693_inv_res(struct nfc_digital_dev *ddev,
void *arg, struct sk_buff *resp)
{
struct digital_iso15693_inv_res *res;
struct nfc_target *target = NULL;
int rc;
if (IS_ERR(resp)) {
rc = PTR_ERR(resp);
resp = NULL;
goto out_free_skb;
}
if (resp->len != sizeof(*res)) {
rc = -EIO;
goto out_free_skb;
}
res = (struct digital_iso15693_inv_res *)resp->data;
if (!DIGITAL_ISO15693_RES_IS_VALID(res->flags)) {
PROTOCOL_ERR("ISO15693 - 10.3.1");
rc = -EINVAL;
goto out_free_skb;
}
target = kzalloc(sizeof(*target), GFP_KERNEL);
if (!target) {
rc = -ENOMEM;
goto out_free_skb;
}
target->is_iso15693 = 1;
target->iso15693_dsfid = res->dsfid;
memcpy(target->iso15693_uid, &res->uid, sizeof(target->iso15693_uid));
rc = digital_target_found(ddev, target, NFC_PROTO_ISO15693);
kfree(target);
out_free_skb:
dev_kfree_skb(resp);
if (rc)
digital_poll_next_tech(ddev);
}
int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech)
{
struct digital_iso15693_inv_req *req;
struct sk_buff *skb;
int rc;
rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH,
NFC_DIGITAL_RF_TECH_ISO15693);
if (rc)
return rc;
rc = digital_in_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING,
NFC_DIGITAL_FRAMING_ISO15693_INVENTORY);
if (rc)
return rc;
skb = digital_skb_alloc(ddev, sizeof(*req));
if (!skb)
return -ENOMEM;
skb_put(skb, sizeof(*req) - sizeof(req->mask)); /* No mask */
req = (struct digital_iso15693_inv_req *)skb->data;
/* Single sub-carrier, high data rate, no AFI, single slot
* Inventory command
*/
req->flags = DIGITAL_ISO15693_REQ_FLAG_DATA_RATE |
DIGITAL_ISO15693_REQ_FLAG_INVENTORY |
DIGITAL_ISO15693_REQ_FLAG_NB_SLOTS;
req->cmd = DIGITAL_CMD_ISO15693_INVENTORY_REQ;
req->mask_len = 0;
rc = digital_in_send_cmd(ddev, skb, 30,
digital_in_recv_iso15693_inv_res, NULL);
if (rc)
kfree_skb(skb);
return rc;
}
static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev)
{
struct sk_buff *skb;

4
net/nfc/hci/llc.c
View File

@ -20,14 +20,12 @@
#include "llc.h"
static struct list_head llc_engines;
static LIST_HEAD(llc_engines);
int nfc_llc_init(void)
{
int r;
INIT_LIST_HEAD(&llc_engines);
r = nfc_llc_nop_register();
if (r)
goto exit;

16
net/nfc/llcp_core.c
View File

@ -27,7 +27,7 @@
static u8 llcp_magic[3] = {0x46, 0x66, 0x6d};
static struct list_head llcp_devices;
static LIST_HEAD(llcp_devices);
static void nfc_llcp_rx_skb(struct nfc_llcp_local *local, struct sk_buff *skb);
@ -293,9 +293,9 @@ static void nfc_llcp_sdreq_timer(unsigned long data)
struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev)
{
struct nfc_llcp_local *local, *n;
struct nfc_llcp_local *local;
list_for_each_entry_safe(local, n, &llcp_devices, list)
list_for_each_entry(local, &llcp_devices, list)
if (local->dev == dev)
return local;
@ -609,14 +609,16 @@ u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len)
int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len)
{
struct nfc_llcp_local *local = nfc_llcp_find_local(dev);
struct nfc_llcp_local *local;
if (gb_len < 3 || gb_len > NFC_MAX_GT_LEN)
return -EINVAL;
local = nfc_llcp_find_local(dev);
if (local == NULL) {
pr_err("No LLCP device\n");
return -ENODEV;
}
if (gb_len < 3)
return -EINVAL;
memset(local->remote_gb, 0, NFC_MAX_GT_LEN);
memcpy(local->remote_gb, gb, gb_len);
@ -1622,8 +1624,6 @@ void nfc_llcp_unregister_device(struct nfc_dev *dev)
int __init nfc_llcp_init(void)
{
INIT_LIST_HEAD(&llcp_devices);
return nfc_llcp_sock_init();
}

3
net/nfc/nci/core.c
View File

@ -74,7 +74,7 @@ static int __nci_request(struct nci_dev *ndev,
ndev->req_status = NCI_REQ_PEND;
init_completion(&ndev->req_completion);
reinit_completion(&ndev->req_completion);
req(ndev, opt);
completion_rc =
wait_for_completion_interruptible_timeout(&ndev->req_completion,
@ -709,6 +709,7 @@ struct nci_dev *nci_allocate_device(struct nci_ops *ops,
ndev->ops = ops;
ndev->tx_headroom = tx_headroom;
ndev->tx_tailroom = tx_tailroom;
init_completion(&ndev->req_completion);
ndev->nfc_dev = nfc_allocate_device(&nci_nfc_ops,
supported_protocols,

3
net/nfc/nci/spi.c
View File

@ -105,7 +105,7 @@ int nci_spi_send(struct nci_spi *nspi,
if (ret != 0 || nspi->acknowledge_mode == NCI_SPI_CRC_DISABLED)
goto done;
init_completion(&nspi->req_completion);
reinit_completion(&nspi->req_completion);
completion_rc = wait_for_completion_interruptible_timeout(
&nspi->req_completion,
NCI_SPI_SEND_TIMEOUT);
@ -145,6 +145,7 @@ struct nci_spi *nci_spi_allocate_spi(struct spi_device *spi,
nspi->spi = spi;
nspi->ndev = ndev;
init_completion(&nspi->req_completion);
return nspi;
}

8
net/nfc/netlink.c
View File

@ -94,6 +94,14 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
target->sensf_res))
goto nla_put_failure;
if (target->is_iso15693) {
if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID,
target->iso15693_dsfid) ||
nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID,
sizeof(target->iso15693_uid), target->iso15693_uid))
goto nla_put_failure;
}
return genlmsg_end(msg, hdr);
nla_put_failure: