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NFC 4.2 pull request 

This is the NFC pull request for 4.2.
 
 - NCI drivers can now define their own handlers for processing
   proprietary NCI responses and notifications.
 
 - NFC vendors can use a dedicated netlink API to send their own
   proprietary commands, like e.g. all commands needed to implement
   vendor specific manufacturing tools.
 
 - A new generic NCI over UART driver against which any NCI chipset
   running on top of a serial interface can register.
 
 - The st21nfcb driver is renamed to st-nci as it can and will support
   most of ST Microelectronics NCI chipsets.
 
 - The st21nfcb driver can put its CLF in hibernate mode and save
   significant amount of power.
 
 - A few st21nfcb minor fixes.
 
 - The NXP NCI driver now supports ACPI enumeration.
 
 - The Marvell NCI driver now supports both USB and serial
   physical interfaces.
 
 - The Marvell NCI drivers also supports NCI frames being muxed
   over HCI. This is a setting that can be defined by a DT property.
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Merge tag 'nfc-next-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next

Samuel Ortiz says:

====================
NFC 4.2 pull request

This is the NFC pull request for 4.2.

- NCI drivers can now define their own handlers for processing
  proprietary NCI responses and notifications.

- NFC vendors can use a dedicated netlink API to send their own
  proprietary commands, like e.g. all commands needed to implement
  vendor specific manufacturing tools.

- A new generic NCI over UART driver against which any NCI chipset
  running on top of a serial interface can register.

- The st21nfcb driver is renamed to st-nci as it can and will support
  most of ST Microelectronics NCI chipsets.

- The st21nfcb driver can put its CLF in hibernate mode and save
  significant amount of power.

- A few st21nfcb minor fixes.

- The NXP NCI driver now supports ACPI enumeration.

- The Marvell NCI driver now supports both USB and serial
  physical interfaces.

- The Marvell NCI drivers also supports NCI frames being muxed
  over HCI. This is a setting that can be defined by a DT property.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
David S. Miller 2015-06-15 16:44:19 -07:00
parent cadfaf432b d0dcad8bd3
commit 023033b1ec
47 changed files with 1988 additions and 625 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
Documentation/devicetree/bindings/net/nfc/nfcmrvl.txt 100644
View File

@ -0,0 +1,29 @@
* Marvell International Ltd. NCI NFC Controller
Required properties:
- compatible: Should be "mrvl,nfc-uart".
Optional SoC specific properties:
- pinctrl-names: Contains only one value - "default".
- pintctrl-0: Specifies the pin control groups used for this controller.
- reset-n-io: Output GPIO pin used to reset the chip (active low).
- hci-muxed: Specifies that the chip is muxing NCI over HCI frames.
Optional UART-based chip specific properties:
- flow-control: Specifies that the chip is using RTS/CTS.
- break-control: Specifies that the chip needs specific break management.
Example (for ARM-based BeagleBoard Black with 88W8887 on UART5):
&uart5 {
status = "okay";
nfcmrvluart: nfcmrvluart@5 {
compatible = "mrvl,nfc-uart";
reset-n-io = <&gpio3 16 0>;
hci-muxed;
flow-control;
}
};

4
Documentation/devicetree/bindings/net/nfc/st21nfcb.txt → Documentation/devicetree/bindings/net/nfc/st-nci.txt
View File

@ -1,7 +1,7 @@
* STMicroelectronics SAS. ST21NFCB NFC Controller
* STMicroelectronics SAS. ST NCI NFC Controller
Required properties:
- compatible: Should be "st,st21nfcb-i2c".
- compatible: Should be "st,st21nfcb-i2c" or "st,st21nfcc-i2c".
- clock-frequency: I²C work frequency.
- reg: address on the bus
- interrupt-parent: phandle for the interrupt gpio controller

4
Documentation/devicetree/bindings/net/nfc/trf7970a.txt
View File

@ -18,6 +18,9 @@ Optional SoC Specific Properties:
"IRQ Status Read" erratum.
- en2-rf-quirk: Specify that the trf7970a being used has the "EN2 RF"
erratum.
- t5t-rmb-extra-byte-quirk: Specify that the trf7970a has the erratum
where an extra byte is returned by Read Multiple Block commands issued
to Type 5 tags.
Example (for ARM-based BeagleBone with TRF7970A on SPI1):
@ -39,6 +42,7 @@ Example (for ARM-based BeagleBone with TRF7970A on SPI1):
autosuspend-delay = <30000>;
irq-status-read-quirk;
en2-rf-quirk;
t5t-rmb-extra-byte-quirk;
status = "okay";
};
};

2
Documentation/nfc/nfc-hci.txt
View File

@ -122,7 +122,7 @@ This must be done from a context that can sleep.
PHY Management
--------------
The physical link (i2c, ...) management is defined by the following struture:
The physical link (i2c, ...) management is defined by the following structure:
struct nfc_phy_ops {
int (*write)(void *dev_id, struct sk_buff *skb);

2
drivers/nfc/Kconfig
View File

@ -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

4
drivers/nfc/Makefile
View File

@ -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

3
drivers/nfc/microread/i2c.c
View File

@ -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;

11
drivers/nfc/nfcmrvl/Kconfig
View File

@ -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.

3
drivers/nfc/nfcmrvl/Makefile
View File

@ -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

134
drivers/nfc/nfcmrvl/main.c
View File

@ -17,6 +17,9 @@
*/
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/of_gpio.h>
#include <linux/nfc.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
@ -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;
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;
}
}
skb = nci_skb_alloc(priv->ndev, count, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
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;
}
memcpy(skb_put(skb, count), data, count);
nci_recv_frame(priv->ndev, skb);
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);

60
drivers/nfc/nfcmrvl/nfcmrvl.h
View File

@ -16,6 +16,11 @@
* this warranty disclaimer.
**/
#ifndef _NFCMRVL_H_
#define _NFCMRVL_H_
#include <linux/platform_data/nfcmrvl.h>
/* 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

225
drivers/nfc/nfcmrvl/uart.c 100644
View File

@ -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 <linux/module.h>
#include <linux/delay.h>
#include <linux/of_gpio.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#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.");

27
drivers/nfc/nfcmrvl/usb.c
View File

@ -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);

2
drivers/nfc/nxp-nci/Makefile
View File

@ -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

52
drivers/nfc/nxp-nci/i2c.c
View File

@ -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 <clement.perrochaud@nxp.com>
* Authors: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
*
* 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 <linux/acpi.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/nfc.h>
#include <linux/gpio/consumer.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/platform_data/nxp-nci.h>
@ -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 <clement.perrochaud@nxp.com>");
MODULE_AUTHOR("Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>");

43
drivers/nfc/pn544/i2c.c
View File

@ -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) {

23
drivers/nfc/st-nci/Kconfig 100644
View File

@ -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.

9
drivers/nfc/st-nci/Makefile 100644
View File

@ -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

179
drivers/nfc/st-nci/core.c 100644
View File

@ -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 <http://www.gnu.org/licenses/>.
*/
#include <linux/module.h>
#include <linux/nfc.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#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);

147
drivers/nfc/st21nfcb/i2c.c → drivers/nfc/st-nci/i2c.c
View File

@ -1,6 +1,6 @@
/*
* I2C Link Layer for ST21NFCB NCI based Driver
* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
* 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,
@ -25,7 +25,7 @@
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/nfc.h>
#include <linux/platform_data/st21nfcb.h>
#include <linux/platform_data/st_nci.h>
#include "ndlc.h"
@ -35,25 +35,23 @@
#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 ST_NCI_I2C_MIN_SIZE 4 /* PCB(1) + NCI Packet header(3) */
#define ST_NCI_I2C_MAX_SIZE 250 /* req 4.2.1 */
#define ST21NFCB_NCI_I2C_DRIVER_NAME "st21nfcb_nci_i2c"
#define ST_NCI_I2C_DRIVER_NAME "st_nci_i2c"
static struct i2c_device_id st21nfcb_nci_i2c_id_table[] = {
{ST21NFCB_NCI_DRIVER_NAME, 0},
static struct i2c_device_id st_nci_i2c_id_table[] = {
{ST_NCI_DRIVER_NAME, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, st21nfcb_nci_i2c_id_table);
MODULE_DEVICE_TABLE(i2c, st_nci_i2c_id_table);
struct st21nfcb_i2c_phy {
struct st_nci_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) \
@ -63,33 +61,26 @@ do { \
16, 1, (skb)->data, (skb)->len, 0); \
} while (0)
static int st21nfcb_nci_i2c_enable(void *phy_id)
static int st_nci_i2c_enable(void *phy_id)
{
struct st21nfcb_i2c_phy *phy = 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);
phy->powered = 1;
usleep_range(80000, 85000);
if (phy->ndlc->powered == 0)
enable_irq(phy->i2c_dev->irq);
return 0;
}
static void st21nfcb_nci_i2c_disable(void *phy_id)
static void st_nci_i2c_disable(void *phy_id)
{
struct st21nfcb_i2c_phy *phy = phy_id;
struct st_nci_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);
}
static void st21nfcb_nci_remove_header(struct sk_buff *skb)
{
skb_pull(skb, ST21NFCB_FRAME_HEADROOM);
disable_irq_nosync(phy->i2c_dev->irq);
}
/*
@ -97,13 +88,13 @@ static void st21nfcb_nci_remove_header(struct sk_buff *skb)
* 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)
static int st_nci_i2c_write(void *phy_id, struct sk_buff *skb)
{
int r = -1;
struct st21nfcb_i2c_phy *phy = phy_id;
struct st_nci_i2c_phy *phy = phy_id;
struct i2c_client *client = phy->i2c_dev;
I2C_DUMP_SKB("st21nfcb_nci_i2c_write", skb);
I2C_DUMP_SKB("st_nci_i2c_write", skb);
if (phy->ndlc->hard_fault != 0)
return phy->ndlc->hard_fault;
@ -121,8 +112,6 @@ static int st21nfcb_nci_i2c_write(void *phy_id, struct sk_buff *skb)
r = 0;
}
st21nfcb_nci_remove_header(skb);
return r;
}
@ -135,40 +124,40 @@ static int st21nfcb_nci_i2c_write(void *phy_id, struct sk_buff *skb)
* at end of read)
* -EREMOTEIO : i2c read error (fatal)
* -EBADMSG : frame was incorrect and discarded
* (value returned from st21nfcb_nci_i2c_repack)
* (value returned from st_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,
static int st_nci_i2c_read(struct st_nci_i2c_phy *phy,
struct sk_buff **skb)
{
int r;
u8 len;
u8 buf[ST21NFCB_NCI_I2C_MAX_SIZE];
u8 buf[ST_NCI_I2C_MAX_SIZE];
struct i2c_client *client = phy->i2c_dev;
r = i2c_master_recv(client, buf, ST21NFCB_NCI_I2C_MIN_SIZE);
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, ST21NFCB_NCI_I2C_MIN_SIZE);
r = i2c_master_recv(client, buf, ST_NCI_I2C_MIN_SIZE);
}
if (r != ST21NFCB_NCI_I2C_MIN_SIZE)
if (r != ST_NCI_I2C_MIN_SIZE)
return -EREMOTEIO;
len = be16_to_cpu(*(__be16 *) (buf + 2));
if (len > ST21NFCB_NCI_I2C_MAX_SIZE) {
if (len > ST_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);
*skb = alloc_skb(ST_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);
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;
@ -180,7 +169,7 @@ static int st21nfcb_nci_i2c_read(struct st21nfcb_i2c_phy *phy,
}
skb_put(*skb, len);
memcpy((*skb)->data + ST21NFCB_NCI_I2C_MIN_SIZE, buf, len);
memcpy((*skb)->data + ST_NCI_I2C_MIN_SIZE, buf, len);
I2C_DUMP_SKB("i2c frame read", *skb);
@ -192,9 +181,9 @@ static int st21nfcb_nci_i2c_read(struct st21nfcb_i2c_phy *phy,
*
* On ST21NFCB, IRQ goes in idle state when read starts.
*/
static irqreturn_t st21nfcb_nci_irq_thread_fn(int irq, void *phy_id)
static irqreturn_t st_nci_irq_thread_fn(int irq, void *phy_id)
{
struct st21nfcb_i2c_phy *phy = phy_id;
struct st_nci_i2c_phy *phy = phy_id;
struct i2c_client *client;
struct sk_buff *skb = NULL;
int r;
@ -210,12 +199,12 @@ static irqreturn_t st21nfcb_nci_irq_thread_fn(int irq, void *phy_id)
if (phy->ndlc->hard_fault)
return IRQ_HANDLED;
if (!phy->powered) {
st21nfcb_nci_i2c_disable(phy);
if (!phy->ndlc->powered) {
st_nci_i2c_disable(phy);
return IRQ_HANDLED;
}
r = st21nfcb_nci_i2c_read(phy, &skb);
r = st_nci_i2c_read(phy, &skb);
if (r == -EREMOTEIO || r == -ENOMEM || r == -EBADMSG)
return IRQ_HANDLED;
@ -225,15 +214,15 @@ static irqreturn_t st21nfcb_nci_irq_thread_fn(int irq, void *phy_id)
}
static struct nfc_phy_ops i2c_phy_ops = {
.write = st21nfcb_nci_i2c_write,
.enable = st21nfcb_nci_i2c_enable,
.disable = st21nfcb_nci_i2c_disable,
.write = st_nci_i2c_write,
.enable = st_nci_i2c_enable,
.disable = st_nci_i2c_disable,
};
#ifdef CONFIG_OF
static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client)
static int st_nci_i2c_of_request_resources(struct i2c_client *client)
{
struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(client);
struct st_nci_i2c_phy *phy = i2c_get_clientdata(client);
struct device_node *pp;
int gpio;
int r;
@ -264,16 +253,16 @@ static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client)
return 0;
}
#else
static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client)
static int st_nci_i2c_of_request_resources(struct i2c_client *client)
{
return -ENODEV;
}
#endif
static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client)
static int st_nci_i2c_request_resources(struct i2c_client *client)
{
struct st21nfcb_nfc_platform_data *pdata;
struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(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;
@ -296,11 +285,11 @@ static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client)
return 0;
}
static int st21nfcb_nci_i2c_probe(struct i2c_client *client,
static int st_nci_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct st21nfcb_i2c_phy *phy;
struct st21nfcb_nfc_platform_data *pdata;
struct st_nci_i2c_phy *phy;
struct st_nci_nfc_platform_data *pdata;
int r;
dev_dbg(&client->dev, "%s\n", __func__);
@ -311,7 +300,7 @@ static int st21nfcb_nci_i2c_probe(struct i2c_client *client,
return -ENODEV;
}
phy = devm_kzalloc(&client->dev, sizeof(struct st21nfcb_i2c_phy),
phy = devm_kzalloc(&client->dev, sizeof(struct st_nci_i2c_phy),
GFP_KERNEL);
if (!phy)
return -ENOMEM;
@ -322,13 +311,13 @@ static int st21nfcb_nci_i2c_probe(struct i2c_client *client,
pdata = client->dev.platform_data;
if (!pdata && client->dev.of_node) {
r = st21nfcb_nci_i2c_of_request_resources(client);
r = st_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);
r = st_nci_i2c_request_resources(client);
if (r) {
nfc_err(&client->dev,
"Cannot get platform resources\n");
@ -349,50 +338,48 @@ static int st21nfcb_nci_i2c_probe(struct i2c_client *client,
}
r = devm_request_threaded_irq(&client->dev, client->irq, NULL,
st21nfcb_nci_irq_thread_fn,
st_nci_irq_thread_fn,
phy->irq_polarity | IRQF_ONESHOT,
ST21NFCB_NCI_DRIVER_NAME, phy);
ST_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)
static int st_nci_i2c_remove(struct i2c_client *client)
{
struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(client);
struct st_nci_i2c_phy *phy = i2c_get_clientdata(client);
dev_dbg(&client->dev, "%s\n", __func__);
ndlc_remove(phy->ndlc);
if (phy->powered)
st21nfcb_nci_i2c_disable(phy);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id of_st21nfcb_i2c_match[] = {
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_st21nfcb_i2c_match);
MODULE_DEVICE_TABLE(of, of_st_nci_i2c_match);
#endif
static struct i2c_driver st21nfcb_nci_i2c_driver = {
static struct i2c_driver st_nci_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = ST21NFCB_NCI_I2C_DRIVER_NAME,
.of_match_table = of_match_ptr(of_st21nfcb_i2c_match),
.name = ST_NCI_I2C_DRIVER_NAME,
.of_match_table = of_match_ptr(of_st_nci_i2c_match),
},
.probe = st21nfcb_nci_i2c_probe,
.id_table = st21nfcb_nci_i2c_id_table,
.remove = st21nfcb_nci_i2c_remove,
.probe = st_nci_i2c_probe,
.id_table = st_nci_i2c_id_table,
.remove = st_nci_i2c_remove,
};
module_i2c_driver(st21nfcb_nci_i2c_driver);
module_i2c_driver(st_nci_i2c_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION(DRIVER_DESC);

23
drivers/nfc/st21nfcb/ndlc.c → drivers/nfc/st-nci/ndlc.c
View File

@ -1,7 +1,7 @@
/*
* Low Level Transport (NDLC) Driver for STMicroelectronics NFC Chip
*
* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
* 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,
@ -20,7 +20,7 @@
#include <net/nfc/nci_core.h>
#include "ndlc.h"
#include "st21nfcb.h"
#include "st-nci.h"
#define NDLC_TIMER_T1 100
#define NDLC_TIMER_T1_WAIT 400
@ -59,13 +59,25 @@ 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);
@ -262,6 +274,7 @@ int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
ndlc->ops = phy_ops;
ndlc->phy_id = phy_id;
ndlc->dev = dev;
ndlc->powered = 0;
*ndlc_id = ndlc;
@ -280,12 +293,14 @@ int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
INIT_WORK(&ndlc->sm_work, llt_ndlc_sm_work);
return st21nfcb_nci_probe(ndlc, phy_headroom, phy_tailroom);
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);
@ -294,7 +309,5 @@ void ndlc_remove(struct llt_ndlc *ndlc)
skb_queue_purge(&ndlc->rcv_q);
skb_queue_purge(&ndlc->send_q);
st21nfcb_nci_remove(ndlc->ndev);
}
EXPORT_SYMBOL(ndlc_remove);

5
drivers/nfc/st21nfcb/ndlc.h → drivers/nfc/st-nci/ndlc.h
View File

@ -1,7 +1,7 @@
/*
* NCI based Driver for STMicroelectronics NFC Chip
*
* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
* 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,
@ -43,10 +43,11 @@ struct llt_ndlc {
struct device *dev;
/*
* < 0 if hardware error occured
* < 0 if hardware error occurred
* and prevents normal operation.
*/
int hard_fault;
int powered;
};
int ndlc_open(struct llt_ndlc *ndlc);

30
drivers/nfc/st21nfcb/st21nfcb.h → drivers/nfc/st-nci/st-nci.h
View File

@ -16,23 +16,35 @@
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __LOCAL_ST21NFCB_H_
#define __LOCAL_ST21NFCB_H_
#ifndef __LOCAL_ST_NCI_H_
#define __LOCAL_ST_NCI_H_
#include "st21nfcb_se.h"
#include "st-nci_se.h"
#include "ndlc.h"
/* Define private flags: */
#define ST21NFCB_NCI_RUNNING 1
#define ST_NCI_RUNNING 1
struct st21nfcb_nci_info {
#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 st21nfcb_se_info se_info;
struct st_nci_se_info se_info;
};
void st21nfcb_nci_remove(struct nci_dev *ndev);
int st21nfcb_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
void st_nci_remove(struct nci_dev *ndev);
int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
int phy_tailroom);
#endif /* __LOCAL_ST21NFCB_H_ */
#endif /* __LOCAL_ST_NCI_H_ */

383
drivers/nfc/st21nfcb/st21nfcb_se.c → drivers/nfc/st-nci/st-nci_se.c
View File

@ -1,7 +1,7 @@
/*
* NCI based Driver for STMicroelectronics NFC Chip
* Secure Element driver for STMicroelectronics NFC NCI chip
*
* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
* 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,
@ -22,10 +22,10 @@
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#include "st21nfcb.h"
#include "st21nfcb_se.h"
#include "st-nci.h"
#include "st-nci_se.h"
struct st21nfcb_pipe_info {
struct st_nci_pipe_info {
u8 pipe_state;
u8 src_host_id;
u8 src_gate_id;
@ -34,166 +34,166 @@ struct st21nfcb_pipe_info {
} __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
#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 ST21NFCB_DEVICE_MGNT_GATE 0x01
#define ST21NFCB_APDU_READER_GATE 0xf0
#define ST21NFCB_CONNECTIVITY_GATE 0x41
#define ST_NCI_DEVICE_MGNT_GATE 0x01
#define ST_NCI_APDU_READER_GATE 0xf0
#define ST_NCI_CONNECTIVITY_GATE 0x41
/* Pipes */
#define ST21NFCB_DEVICE_MGNT_PIPE 0x02
#define ST_NCI_DEVICE_MGNT_PIPE 0x02
/* Connectivity pipe only */
#define ST21NFCB_SE_COUNT_PIPE_UICC 0x01
#define ST_NCI_SE_COUNT_PIPE_UICC 0x01
/* Connectivity + APDU Reader pipe */
#define ST21NFCB_SE_COUNT_PIPE_EMBEDDED 0x02
#define ST_NCI_SE_COUNT_PIPE_EMBEDDED 0x02
#define ST21NFCB_SE_TO_HOT_PLUG 1000 /* msecs */
#define ST21NFCB_SE_TO_PIPES 2000
#define ST_NCI_SE_TO_HOT_PLUG 1000 /* msecs */
#define ST_NCI_SE_TO_PIPES 2000
#define ST21NFCB_EVT_HOT_PLUG_IS_INHIBITED(x) (x->data[0] & 0x80)
#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 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 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 ST21NFCB_SE_MODE_OFF 0x00
#define ST21NFCB_SE_MODE_ON 0x01
#define ST_NCI_SE_MODE_OFF 0x00
#define ST_NCI_SE_MODE_ON 0x01
#define ST21NFCB_EVT_CONNECTIVITY 0x10
#define ST21NFCB_EVT_TRANSACTION 0x12
#define ST_NCI_EVT_CONNECTIVITY 0x10
#define ST_NCI_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 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 ST21NFCB_DM_IS_PIPE_OPEN(p) \
((p & 0x0f) == (ST21NFCB_DM_PIPE_CREATED | ST21NFCB_DM_PIPE_OPEN))
#define ST_NCI_DM_IS_PIPE_OPEN(p) \
((p & 0x0f) == (ST_NCI_DM_PIPE_CREATED | ST_NCI_DM_PIPE_OPEN))
#define ST21NFCB_ATR_DEFAULT_BWI 0x04
#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 ST21NFCB_BWI_TO_TIMEOUT(x) ((1 << x) * 200)
#define ST21NFCB_ATR_GET_Y_FROM_TD(x) (x >> 4)
#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 ST21NFCB_ATR_TA_PRESENT(x) (x & 0x01)
#define ST_NCI_ATR_TA_PRESENT(x) (x & 0x01)
/* If TB is present bit 1 is set */
#define ST21NFCB_ATR_TB_PRESENT(x) (x & 0x02)
#define ST_NCI_ATR_TB_PRESENT(x) (x & 0x02)
#define ST21NFCB_NUM_DEVICES 256
#define ST_NCI_NUM_DEVICES 256
static DECLARE_BITMAP(dev_mask, ST21NFCB_NUM_DEVICES);
static DECLARE_BITMAP(dev_mask, ST_NCI_NUM_DEVICES);
/* Here are the mandatory pipe for st21nfcb */
static struct nci_hci_gate st21nfcb_gates[] = {
/* Here are the mandatory pipe for st_nci */
static struct nci_hci_gate st_nci_gates[] = {
{NCI_HCI_ADMIN_GATE, NCI_HCI_ADMIN_PIPE,
ST21NFCB_HOST_CONTROLLER_ID},
ST_NCI_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},
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 */
{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},
{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 st21nfcb_se_get_bwi(struct nci_dev *ndev)
static u8 st_nci_se_get_bwi(struct nci_dev *ndev)
{
int i;
u8 td;
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
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 < ST21NFCB_ESE_MAX_LENGTH; i++) {
td = ST21NFCB_ATR_GET_Y_FROM_TD(info->se_info.atr[i]);
if (ST21NFCB_ATR_TA_PRESENT(td))
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 (ST21NFCB_ATR_TB_PRESENT(td)) {
if (ST_NCI_ATR_TB_PRESENT(td)) {
i++;
return info->se_info.atr[i] >> 4;
}
}
return ST21NFCB_ATR_DEFAULT_BWI;
return ST_NCI_ATR_DEFAULT_BWI;
}
static void st21nfcb_se_get_atr(struct nci_dev *ndev)
static void st_nci_se_get_atr(struct nci_dev *ndev)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
struct st_nci_info *info = nci_get_drvdata(ndev);
int r;
struct sk_buff *skb;
r = nci_hci_get_param(ndev, ST21NFCB_APDU_READER_GATE,
r = nci_hci_get_param(ndev, ST_NCI_APDU_READER_GATE,
NCI_HCI_APDU_PARAM_ATR, &skb);
if (r < 0)
return;
if (skb->len <= ST21NFCB_ESE_MAX_LENGTH) {
if (skb->len <= ST_NCI_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));
ST_NCI_BWI_TO_TIMEOUT(st_nci_se_get_bwi(ndev));
}
kfree_skb(skb);
}
int st21nfcb_hci_load_session(struct nci_dev *ndev)
int st_nci_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};
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 ST21NFCB device pipes number are dynamics
/* 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 ST21NFCB is to:
* A better approach on ST_NCI is to:
* - get a pipe list for each host.
* (eg: ST21NFCB_HOST_CONTROLLER_ID for now).
* (eg: ST_NCI_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.
* - 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, ST21NFCB_HOST_CONTROLLER_ID,
ST21NFCB_DEVICE_MGNT_GATE,
ST21NFCB_DEVICE_MGNT_PIPE);
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, ST21NFCB_DEVICE_MGNT_GATE,
ST21NFCB_DM_GETINFO, pipe_list, sizeof(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;
@ -201,8 +201,8 @@ int st21nfcb_hci_load_session(struct nci_dev *ndev)
/* 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,
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)
@ -217,81 +217,81 @@ int st21nfcb_hci_load_session(struct nci_dev *ndev)
* - 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) {
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(st21nfcb_gates)) &&
(st21nfcb_gates[j].gate != dm_pipe_info->dst_gate_id); j++)
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(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];
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[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 =
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, st21nfcb_gates,
sizeof(st21nfcb_gates));
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(st21nfcb_hci_load_session);
EXPORT_SYMBOL_GPL(st_nci_hci_load_session);
static void st21nfcb_hci_admin_event_received(struct nci_dev *ndev,
static void st_nci_hci_admin_event_received(struct nci_dev *ndev,
u8 event, struct sk_buff *skb)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
struct st_nci_info *info = nci_get_drvdata(ndev);
switch (event) {
case ST21NFCB_EVT_HOT_PLUG:
case ST_NCI_EVT_HOT_PLUG:
if (info->se_info.se_active) {
if (!ST21NFCB_EVT_HOT_PLUG_IS_INHIBITED(skb)) {
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(ST21NFCB_SE_TO_PIPES));
msecs_to_jiffies(ST_NCI_SE_TO_PIPES));
}
}
break;
}
}
static int st21nfcb_hci_apdu_reader_event_received(struct nci_dev *ndev,
static int st_nci_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);
struct st_nci_info *info = nci_get_drvdata(ndev);
pr_debug("apdu reader gate event: %x\n", event);
switch (event) {
case ST21NFCB_EVT_TRANSMIT_DATA:
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 ST21NFCB_EVT_WTX_REQUEST:
case ST_NCI_EVT_WTX_REQUEST:
mod_timer(&info->se_info.bwi_timer, jiffies +
msecs_to_jiffies(info->se_info.wt_timeout));
break;
@ -306,7 +306,7 @@ static int st21nfcb_hci_apdu_reader_event_received(struct nci_dev *ndev,
* <= 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,
static int st_nci_hci_connectivity_event_received(struct nci_dev *ndev,
u8 host, u8 event,
struct sk_buff *skb)
{
@ -317,10 +317,10 @@ static int st21nfcb_hci_connectivity_event_received(struct nci_dev *ndev,
pr_debug("connectivity gate event: %x\n", event);
switch (event) {
case ST21NFCB_EVT_CONNECTIVITY:
case ST_NCI_EVT_CONNECTIVITY:
break;
case ST21NFCB_EVT_TRANSACTION:
case ST_NCI_EVT_TRANSACTION:
/* According to specification etsi 102 622
* 11.2.2.4 EVT_TRANSACTION Table 52
* Description Tag Length
@ -355,7 +355,7 @@ static int st21nfcb_hci_connectivity_event_received(struct nci_dev *ndev,
return r;
}
void st21nfcb_hci_event_received(struct nci_dev *ndev, u8 pipe,
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;
@ -363,32 +363,32 @@ void st21nfcb_hci_event_received(struct nci_dev *ndev, u8 pipe,
switch (gate) {
case NCI_HCI_ADMIN_GATE:
st21nfcb_hci_admin_event_received(ndev, event, skb);
st_nci_hci_admin_event_received(ndev, event, skb);
break;
case ST21NFCB_APDU_READER_GATE:
st21nfcb_hci_apdu_reader_event_received(ndev, event, skb);
case ST_NCI_APDU_READER_GATE:
st_nci_hci_apdu_reader_event_received(ndev, event, skb);
break;
case ST21NFCB_CONNECTIVITY_GATE:
st21nfcb_hci_connectivity_event_received(ndev, host, event,
case ST_NCI_CONNECTIVITY_GATE:
st_nci_hci_connectivity_event_received(ndev, host, event,
skb);
break;
}
}
EXPORT_SYMBOL_GPL(st21nfcb_hci_event_received);
EXPORT_SYMBOL_GPL(st_nci_hci_event_received);
void st21nfcb_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd,
void st_nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd,
struct sk_buff *skb)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
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 != ST21NFCB_APDU_READER_GATE &&
ndev->hci_dev->pipes[pipe].host != ST21NFCB_UICC_HOST_ID)
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 ==
@ -401,28 +401,28 @@ void st21nfcb_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd,
break;
}
}
EXPORT_SYMBOL_GPL(st21nfcb_hci_cmd_received);
EXPORT_SYMBOL_GPL(st_nci_hci_cmd_received);
/*
* Remarks: On some early st21nfcb firmware, nci_nfcee_mode_set(0)
* Remarks: On some early st_nci firmware, nci_nfcee_mode_set(0)
* is rejected
*/
static int st21nfcb_nci_control_se(struct nci_dev *ndev, u8 se_idx,
static int st_nci_control_se(struct nci_dev *ndev, u8 se_idx,
u8 state)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
struct st_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:
case ST_NCI_UICC_HOST_ID:
ndev->hci_dev->count_pipes = 0;
ndev->hci_dev->expected_pipes = ST21NFCB_SE_COUNT_PIPE_UICC;
ndev->hci_dev->expected_pipes = ST_NCI_SE_COUNT_PIPE_UICC;
break;
case ST21NFCB_ESE_HOST_ID:
case ST_NCI_ESE_HOST_ID:
ndev->hci_dev->count_pipes = 0;
ndev->hci_dev->expected_pipes = ST21NFCB_SE_COUNT_PIPE_EMBEDDED;
ndev->hci_dev->expected_pipes = ST_NCI_SE_COUNT_PIPE_EMBEDDED;
break;
default:
return -EINVAL;
@ -438,7 +438,7 @@ static int st21nfcb_nci_control_se(struct nci_dev *ndev, u8 se_idx,
return r;
mod_timer(&info->se_info.se_active_timer, jiffies +
msecs_to_jiffies(ST21NFCB_SE_TO_HOT_PLUG));
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 */
@ -458,49 +458,49 @@ static int st21nfcb_nci_control_se(struct nci_dev *ndev, u8 se_idx,
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)
if (state == ST_NCI_SE_MODE_ON && host_id == se_idx)
return se_idx;
else if (state == ST21NFCB_SE_MODE_OFF && host_id != se_idx)
else if (state == ST_NCI_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 st_nci_disable_se(struct nci_dev *ndev, u32 se_idx)
{
int r;
pr_debug("st21nfcb_nci_disable_se\n");
pr_debug("st_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);
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(st21nfcb_nci_disable_se);
EXPORT_SYMBOL_GPL(st_nci_disable_se);
int st21nfcb_nci_enable_se(struct nci_dev *ndev, u32 se_idx)
int st_nci_enable_se(struct nci_dev *ndev, u32 se_idx)
{
int r;
pr_debug("st21nfcb_nci_enable_se\n");
pr_debug("st_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 (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(st21nfcb_nci_enable_se);
EXPORT_SYMBOL_GPL(st_nci_enable_se);
static int st21nfcb_hci_network_init(struct nci_dev *ndev)
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;
@ -519,7 +519,8 @@ static int st21nfcb_hci_network_init(struct nci_dev *ndev)
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));
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),
@ -531,15 +532,15 @@ static int st21nfcb_hci_network_init(struct nci_dev *ndev)
if (!conn_info)
goto free_dest_params;
memcpy(ndev->hci_dev->init_data.gates, st21nfcb_gates,
sizeof(st21nfcb_gates));
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, ST21NFCB_NUM_DEVICES);
if (dev_num >= ST21NFCB_NUM_DEVICES) {
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;
}
@ -564,72 +565,72 @@ exit:
return r;
}
int st21nfcb_nci_discover_se(struct nci_dev *ndev)
int st_nci_discover_se(struct nci_dev *ndev)
{
u8 param[2];
int r;
int se_count = 0;
pr_debug("st21nfcb_nci_discover_se\n");
pr_debug("st_nci_discover_se\n");
r = st21nfcb_hci_network_init(ndev);
r = st_nci_hci_network_init(ndev);
if (r != 0)
return r;
param[0] = ST21NFCB_UICC_HOST_ID;
param[1] = ST21NFCB_HCI_HOST_ID_ESE;
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 = 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);
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 = 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,
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++;
st21nfcb_se_get_atr(ndev);
st_nci_se_get_atr(ndev);
}
return !se_count;
}
EXPORT_SYMBOL_GPL(st21nfcb_nci_discover_se);
EXPORT_SYMBOL_GPL(st_nci_discover_se);
int st21nfcb_nci_se_io(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)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
struct st_nci_info *info = nci_get_drvdata(ndev);
pr_debug("\n");
switch (se_idx) {
case ST21NFCB_HCI_HOST_ID_ESE:
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, ST21NFCB_APDU_READER_GATE,
ST21NFCB_EVT_TRANSMIT_DATA, apdu,
return nci_hci_send_event(ndev, ST_NCI_APDU_READER_GATE,
ST_NCI_EVT_TRANSMIT_DATA, apdu,
apdu_length);
default:
return -ENODEV;
}
}
EXPORT_SYMBOL(st21nfcb_nci_se_io);
EXPORT_SYMBOL(st_nci_se_io);
static void st21nfcb_se_wt_timeout(unsigned long data)
static void st_nci_se_wt_timeout(unsigned long data)
{
/*
* No answer from the secure element
@ -642,7 +643,7 @@ static void st21nfcb_se_wt_timeout(unsigned long data)
*/
/* hardware reset managed through VCC_UICC_OUT power supply */
u8 param = 0x01;
struct st21nfcb_nci_info *info = (struct st21nfcb_nci_info *) data;
struct st_nci_info *info = (struct st_nci_info *) data;
pr_debug("\n");
@ -650,19 +651,19 @@ static void st21nfcb_se_wt_timeout(unsigned long data)
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);
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, ST21NFCB_DEVICE_MGNT_GATE,
ST21NFCB_EVT_SE_HARD_RESET, &param, 1);
nci_hci_send_event(info->ndlc->ndev, ST_NCI_DEVICE_MGNT_GATE,
ST_NCI_EVT_SE_HARD_RESET, &param, 1);
}
info->se_info.cb(info->se_info.cb_context, NULL, 0, -ETIME);
}
static void st21nfcb_se_activation_timeout(unsigned long data)
static void st_nci_se_activation_timeout(unsigned long data)
{
struct st21nfcb_nci_info *info = (struct st21nfcb_nci_info *) data;
struct st_nci_info *info = (struct st_nci_info *) data;
pr_debug("\n");
@ -671,35 +672,35 @@ static void st21nfcb_se_activation_timeout(unsigned long data)
complete(&info->se_info.req_completion);
}
int st21nfcb_se_init(struct nci_dev *ndev)
int st_nci_se_init(struct nci_dev *ndev)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(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 = st21nfcb_se_wt_timeout;
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 =
st21nfcb_se_activation_timeout;
st_nci_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);
ST_NCI_BWI_TO_TIMEOUT(ST_NCI_ATR_DEFAULT_BWI);
return 0;
}
EXPORT_SYMBOL(st21nfcb_se_init);
EXPORT_SYMBOL(st_nci_se_init);
void st21nfcb_se_deinit(struct nci_dev *ndev)
void st_nci_se_deinit(struct nci_dev *ndev)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
struct st_nci_info *info = nci_get_drvdata(ndev);
if (info->se_info.bwi_active)
del_timer_sync(&info->se_info.bwi_timer);
@ -709,5 +710,5 @@ void st21nfcb_se_deinit(struct nci_dev *ndev)
info->se_info.se_active = false;
info->se_info.bwi_active = false;
}
EXPORT_SYMBOL(st21nfcb_se_deinit);
EXPORT_SYMBOL(st_nci_se_deinit);

61
drivers/nfc/st-nci/st-nci_se.h 100644
View File

@ -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 <http://www.gnu.org/licenses/>.
*/
#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_ */

22
drivers/nfc/st21nfcb/Kconfig
View File

@ -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.

9
drivers/nfc/st21nfcb/Makefile
View File

@ -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

143
drivers/nfc/st21nfcb/st21nfcb.c
View File

@ -1,143 +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 <http://www.gnu.org/licenses/>.
*/
#include <linux/module.h>
#include <linux/nfc.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#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)
{
struct st21nfcb_nci_info *info = nci_get_drvdata(ndev);
nci_unregister_device(ndev);
nci_free_device(ndev);
kfree(info);
}
EXPORT_SYMBOL_GPL(st21nfcb_nci_remove);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION(DRIVER_DESC);

61
drivers/nfc/st21nfcb/st21nfcb_se.h
View File

@ -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 <http://www.gnu.org/licenses/>.
*/
#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_ */

23
drivers/nfc/trf7970a.c
View File

@ -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;

40
include/linux/platform_data/nfcmrvl.h 100644
View File

@ -0,0 +1,40 @@
/*
* 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.
*/
#ifndef _NFCMRVL_PTF_H_
#define _NFCMRVL_PTF_H_
struct nfcmrvl_platform_data {
/*
* Generic
*/
/* GPIO that is wired to RESET_N signal */
unsigned int reset_n_io;
/* Tell if transport is muxed in HCI one */
unsigned int hci_muxed;
/*
* UART specific
*/
/* Tell if UART needs flow control at init */
unsigned int flow_control;
/* Tell if firmware supports break control for power management */
unsigned int break_control;
};
#endif /* _NFCMRVL_PTF_H_ */

14
include/linux/platform_data/st21nfcb.h → include/linux/platform_data/st-nci.h
View File

@ -1,7 +1,7 @@
/*
* Driver include for the ST21NFCB NFC chip.
* Driver include for ST NCI NFC chip family.
*
* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
* 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,
@ -16,14 +16,14 @@
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ST21NFCB_NCI_H_
#define _ST21NFCB_NCI_H_
#ifndef _ST_NCI_H_
#define _ST_NCI_H_
#define ST21NFCB_NCI_DRIVER_NAME "st21nfcb_nci"
#define ST_NCI_DRIVER_NAME "st_nci"
struct st21nfcb_nfc_platform_data {
struct st_nci_nfc_platform_data {
unsigned int gpio_reset;
unsigned int irq_polarity;
};
#endif /* _ST21NFCB_NCI_H_ */
#endif /* _ST_NCI_H_ */

29
include/linux/platform_data/st_nci.h 100644
View File

@ -0,0 +1,29 @@
/*
* Driver include for ST NCI NFC chip family.
*
* 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 <http://www.gnu.org/licenses/>.
*/
#ifndef _ST_NCI_H_
#define _ST_NCI_H_
#define ST_NCI_DRIVER_NAME "st_nci"
struct st_nci_nfc_platform_data {
unsigned int gpio_reset;
unsigned int irq_polarity;
};
#endif /* _ST_NCI_H_ */

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

@ -179,6 +179,13 @@ void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
static inline int nfc_hci_set_vendor_cmds(struct nfc_hci_dev *hdev,
struct nfc_vendor_cmd *cmds,
int n_cmds)
{
return nfc_set_vendor_cmds(hdev->ndev, cmds, n_cmds);
}
void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err);
int nfc_hci_result_to_errno(u8 result);

1
include/net/nfc/nci.h
View File

@ -35,6 +35,7 @@
#define NCI_MAX_NUM_RF_CONFIGS 10
#define NCI_MAX_NUM_CONN 10
#define NCI_MAX_PARAM_LEN 251
#define NCI_MAX_PACKET_SIZE 258
/* NCI Status Codes */
#define NCI_STATUS_OK 0x00

71
include/net/nfc/nci_core.h
View File

@ -31,6 +31,7 @@
#include <linux/interrupt.h>
#include <linux/skbuff.h>
#include <linux/tty.h>
#include <net/nfc/nfc.h>
#include <net/nfc/nci.h>
@ -66,7 +67,14 @@ enum nci_state {
struct nci_dev;
struct nci_prop_ops {
__u16 opcode;
int (*rsp)(struct nci_dev *dev, struct sk_buff *skb);
int (*ntf)(struct nci_dev *dev, struct sk_buff *skb);
};
struct nci_ops {
int (*init)(struct nci_dev *ndev);
int (*open)(struct nci_dev *ndev);
int (*close)(struct nci_dev *ndev);
int (*send)(struct nci_dev *ndev, struct sk_buff *skb);
@ -84,12 +92,16 @@ struct nci_ops {
struct sk_buff *skb);
void (*hci_cmd_received)(struct nci_dev *ndev, u8 pipe, u8 cmd,
struct sk_buff *skb);
struct nci_prop_ops *prop_ops;
size_t n_prop_ops;
};
#define NCI_MAX_SUPPORTED_RF_INTERFACES 4
#define NCI_MAX_DISCOVERED_TARGETS 10
#define NCI_MAX_NUM_NFCEE 255
#define NCI_MAX_CONN_ID 7
#define NCI_MAX_PROPRIETARY_CMD 64
struct nci_conn_info {
struct list_head list;
@ -264,6 +276,8 @@ int nci_request(struct nci_dev *ndev,
void (*req)(struct nci_dev *ndev,
unsigned long opt),
unsigned long opt, __u32 timeout);
int nci_prop_cmd(struct nci_dev *ndev, __u8 oid, size_t len, __u8 *payload);
int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
int nci_set_config(struct nci_dev *ndev, __u8 id, size_t len, __u8 *val);
@ -318,8 +332,19 @@ static inline void *nci_get_drvdata(struct nci_dev *ndev)
return ndev->driver_data;
}
static inline int nci_set_vendor_cmds(struct nci_dev *ndev,
struct nfc_vendor_cmd *cmds,
int n_cmds)
{
return nfc_set_vendor_cmds(ndev->nfc_dev, cmds, n_cmds);
}
void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb);
void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb);
int nci_prop_rsp_packet(struct nci_dev *ndev, __u16 opcode,
struct sk_buff *skb);
int nci_prop_ntf_packet(struct nci_dev *ndev, __u16 opcode,
struct sk_buff *skb);
void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb);
int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload);
int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb);
@ -367,4 +392,50 @@ int nci_spi_send(struct nci_spi *nspi,
struct sk_buff *skb);
struct sk_buff *nci_spi_read(struct nci_spi *nspi);
/* ----- NCI UART ---- */
/* Ioctl */
#define NCIUARTSETDRIVER _IOW('U', 0, char *)
enum nci_uart_driver {
NCI_UART_DRIVER_MARVELL = 0,
NCI_UART_DRIVER_MAX
};
struct nci_uart;
struct nci_uart_ops {
int (*open)(struct nci_uart *nci_uart);
void (*close)(struct nci_uart *nci_uart);
int (*recv)(struct nci_uart *nci_uart, struct sk_buff *skb);
int (*recv_buf)(struct nci_uart *nci_uart, const u8 *data, char *flags,
int count);
int (*send)(struct nci_uart *nci_uart, struct sk_buff *skb);
void (*tx_start)(struct nci_uart *nci_uart);
void (*tx_done)(struct nci_uart *nci_uart);
};
struct nci_uart {
struct module *owner;
struct nci_uart_ops ops;
const char *name;
enum nci_uart_driver driver;
/* Dynamic data */
struct nci_dev *ndev;
spinlock_t rx_lock;
struct work_struct write_work;
struct tty_struct *tty;
unsigned long tx_state;
struct sk_buff_head tx_q;
struct sk_buff *tx_skb;
struct sk_buff *rx_skb;
int rx_packet_len;
void *drv_data;
};
int nci_uart_register(struct nci_uart *nu);
void nci_uart_unregister(struct nci_uart *nu);
void nci_uart_set_config(struct nci_uart *nu, int baudrate, int flow_ctrl);
#endif /* __NCI_CORE_H */

22
include/net/nfc/nfc.h
View File

@ -165,6 +165,12 @@ struct nfc_genl_data {
struct mutex genl_data_mutex;
};
struct nfc_vendor_cmd {
__u32 vendor_id;
__u32 subcmd;
int (*doit)(struct nfc_dev *dev, void *data, size_t data_len);
};
struct nfc_dev {
int idx;
u32 target_next_idx;
@ -193,6 +199,9 @@ struct nfc_dev {
struct rfkill *rfkill;
struct nfc_vendor_cmd *vendor_cmds;
int n_vendor_cmds;
struct nfc_ops *ops;
};
#define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
@ -296,4 +305,17 @@ struct nfc_se *nfc_find_se(struct nfc_dev *dev, u32 se_idx);
void nfc_send_to_raw_sock(struct nfc_dev *dev, struct sk_buff *skb,
u8 payload_type, u8 direction);
static inline int nfc_set_vendor_cmds(struct nfc_dev *dev,
struct nfc_vendor_cmd *cmds,
int n_cmds)
{
if (dev->vendor_cmds || dev->n_vendor_cmds)
return -EINVAL;
dev->vendor_cmds = cmds;
dev->n_vendor_cmds = n_cmds;
return 0;
}
#endif /* __NET_NFC_H */

10
include/uapi/linux/nfc.h
View File

@ -86,6 +86,8 @@
* for this event is the application ID (AID).
* @NFC_CMD_GET_SE: Dump all discovered secure elements from an NFC controller.
* @NFC_CMD_SE_IO: Send/Receive APDUs to/from the selected secure element.
* @NFC_CMD_VENDOR: Vendor specific command, to be implemented directly
* from the driver in order to support hardware specific operations.
*/
enum nfc_commands {
NFC_CMD_UNSPEC,
@ -117,6 +119,7 @@ enum nfc_commands {
NFC_CMD_GET_SE,
NFC_CMD_SE_IO,
NFC_CMD_ACTIVATE_TARGET,
NFC_CMD_VENDOR,
/* private: internal use only */
__NFC_CMD_AFTER_LAST
};
@ -153,6 +156,10 @@ enum nfc_commands {
* @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
* @NFC_ATTR_VENDOR_ID: NFC manufacturer unique ID, typically an OUI
* @NFC_ATTR_VENDOR_SUBCMD: Vendor specific sub command
* @NFC_ATTR_VENDOR_DATA: Vendor specific data, to be optionally passed
* to a vendor specific command implementation
*/
enum nfc_attrs {
NFC_ATTR_UNSPEC,
@ -184,6 +191,9 @@ enum nfc_attrs {
NFC_ATTR_TARGET_ISO15693_DSFID,
NFC_ATTR_TARGET_ISO15693_UID,
NFC_ATTR_SE_PARAMS,
NFC_ATTR_VENDOR_ID,
NFC_ATTR_VENDOR_SUBCMD,
NFC_ATTR_VENDOR_DATA,
/* private: internal use only */
__NFC_ATTR_AFTER_LAST
};

1
include/uapi/linux/tty.h
View File

@ -34,5 +34,6 @@
#define N_TI_WL 22 /* for TI's WL BT, FM, GPS combo chips */
#define N_TRACESINK 23 /* Trace data routing for MIPI P1149.7 */
#define N_TRACEROUTER 24 /* Trace data routing for MIPI P1149.7 */
#define N_NCI 25 /* NFC NCI UART */
#endif /* _UAPI_LINUX_TTY_H */

7
net/nfc/nci/Kconfig
View File

@ -19,3 +19,10 @@ config NFC_NCI_SPI
an NFC Controller (NFCC) and a Device Host (DH).
Say yes if you use an NCI driver that requires SPI link layer.
config NFC_NCI_UART
depends on NFC_NCI && TTY
tristate "NCI over UART protocol support"
default n
help
Say yes if you use an NCI driver that requires UART link layer.

3
net/nfc/nci/Makefile
View File

@ -7,3 +7,6 @@ obj-$(CONFIG_NFC_NCI) += nci.o
nci-objs := core.o data.o lib.o ntf.o rsp.o hci.o
nci-$(CONFIG_NFC_NCI_SPI) += spi.o
nci_uart-y += uart.o
obj-$(CONFIG_NFC_NCI_UART) += nci_uart.o

105
net/nfc/nci/core.c
View File

@ -28,6 +28,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
@ -73,6 +74,7 @@ void nci_req_complete(struct nci_dev *ndev, int result)
complete(&ndev->req_completion);
}
}
EXPORT_SYMBOL(nci_req_complete);
static void nci_req_cancel(struct nci_dev *ndev, int err)
{
@ -323,6 +325,32 @@ static void nci_rf_deactivate_req(struct nci_dev *ndev, unsigned long opt)
sizeof(struct nci_rf_deactivate_cmd), &cmd);
}
struct nci_prop_cmd_param {
__u16 opcode;
size_t len;
__u8 *payload;
};
static void nci_prop_cmd_req(struct nci_dev *ndev, unsigned long opt)
{
struct nci_prop_cmd_param *param = (struct nci_prop_cmd_param *)opt;
nci_send_cmd(ndev, param->opcode, param->len, param->payload);
}
int nci_prop_cmd(struct nci_dev *ndev, __u8 oid, size_t len, __u8 *payload)
{
struct nci_prop_cmd_param param;
param.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY, oid);
param.len = len;
param.payload = payload;
return __nci_request(ndev, nci_prop_cmd_req, (unsigned long)&param,
msecs_to_jiffies(NCI_CMD_TIMEOUT));
}
EXPORT_SYMBOL(nci_prop_cmd);
static int nci_open_device(struct nci_dev *ndev)
{
int rc = 0;
@ -343,11 +371,17 @@ static int nci_open_device(struct nci_dev *ndev)
set_bit(NCI_INIT, &ndev->flags);
rc = __nci_request(ndev, nci_reset_req, 0,
msecs_to_jiffies(NCI_RESET_TIMEOUT));
if (ndev->ops->init)
rc = ndev->ops->init(ndev);
if (ndev->ops->setup)
ndev->ops->setup(ndev);
if (!rc) {
rc = __nci_request(ndev, nci_reset_req, 0,
msecs_to_jiffies(NCI_RESET_TIMEOUT));
}
if (!rc && ndev->ops->setup) {
rc = ndev->ops->setup(ndev);
}
if (!rc) {
rc = __nci_request(ndev, nci_init_req, 0,
@ -407,6 +441,12 @@ static int nci_close_device(struct nci_dev *ndev)
set_bit(NCI_INIT, &ndev->flags);
__nci_request(ndev, nci_reset_req, 0,
msecs_to_jiffies(NCI_RESET_TIMEOUT));
/* After this point our queues are empty
* and no works are scheduled.
*/
ndev->ops->close(ndev);
clear_bit(NCI_INIT, &ndev->flags);
del_timer_sync(&ndev->cmd_timer);
@ -414,10 +454,6 @@ static int nci_close_device(struct nci_dev *ndev)
/* Flush cmd wq */
flush_workqueue(ndev->cmd_wq);
/* After this point our queues are empty
* and no works are scheduled. */
ndev->ops->close(ndev);
/* Clear flags */
ndev->flags = 0;
@ -762,7 +798,7 @@ static void nci_deactivate_target(struct nfc_dev *nfc_dev,
if (atomic_read(&ndev->state) == NCI_POLL_ACTIVE) {
nci_request(ndev, nci_rf_deactivate_req,
NCI_DEACTIVATE_TYPE_SLEEP_MODE,
NCI_DEACTIVATE_TYPE_IDLE_MODE,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
}
}
@ -961,6 +997,14 @@ struct nci_dev *nci_allocate_device(struct nci_ops *ops,
return NULL;
ndev->ops = ops;
if (ops->n_prop_ops > NCI_MAX_PROPRIETARY_CMD) {
pr_err("Too many proprietary commands: %zd\n",
ops->n_prop_ops);
ops->prop_ops = NULL;
ops->n_prop_ops = 0;
}
ndev->tx_headroom = tx_headroom;
ndev->tx_tailroom = tx_tailroom;
init_completion(&ndev->req_completion);
@ -1165,6 +1209,49 @@ int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
return 0;
}
/* Proprietary commands API */
static struct nci_prop_ops *prop_cmd_lookup(struct nci_dev *ndev,
__u16 opcode)
{
size_t i;
struct nci_prop_ops *prop_op;
if (!ndev->ops->prop_ops || !ndev->ops->n_prop_ops)
return NULL;
for (i = 0; i < ndev->ops->n_prop_ops; i++) {
prop_op = &ndev->ops->prop_ops[i];
if (prop_op->opcode == opcode)
return prop_op;
}
return NULL;
}
int nci_prop_rsp_packet(struct nci_dev *ndev, __u16 rsp_opcode,
struct sk_buff *skb)
{
struct nci_prop_ops *prop_op;
prop_op = prop_cmd_lookup(ndev, rsp_opcode);
if (!prop_op || !prop_op->rsp)
return -ENOTSUPP;
return prop_op->rsp(ndev, skb);
}
int nci_prop_ntf_packet(struct nci_dev *ndev, __u16 ntf_opcode,
struct sk_buff *skb)
{
struct nci_prop_ops *prop_op;
prop_op = prop_cmd_lookup(ndev, ntf_opcode);
if (!prop_op || !prop_op->ntf)
return -ENOTSUPP;
return prop_op->ntf(ndev, skb);
}
/* ---- NCI TX Data worker thread ---- */
static void nci_tx_work(struct work_struct *work)

11
net/nfc/nci/hci.c
View File

@ -639,22 +639,19 @@ int nci_hci_dev_session_init(struct nci_dev *ndev)
ndev->hci_dev->init_data.gates[0].gate,
ndev->hci_dev->init_data.gates[0].pipe);
if (r < 0)
goto exit;
return r;
r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE,
NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY, &skb);
if (r < 0)
goto exit;
return r;
if (skb->len &&
skb->len == strlen(ndev->hci_dev->init_data.session_id) &&
memcmp(ndev->hci_dev->init_data.session_id,
skb->data, skb->len) == 0 &&
!memcmp(ndev->hci_dev->init_data.session_id, skb->data, skb->len) &&
ndev->ops->hci_load_session) {
/* Restore gate<->pipe table from some proprietary location. */
r = ndev->ops->hci_load_session(ndev);
if (r < 0)
goto exit;
} else {
r = nci_hci_dev_connect_gates(ndev,
ndev->hci_dev->init_data.gate_count,
@ -667,8 +664,6 @@ int nci_hci_dev_session_init(struct nci_dev *ndev)
ndev->hci_dev->init_data.session_id,
strlen(ndev->hci_dev->init_data.session_id));
}
if (r == 0)
goto exit;
exit:
kfree_skb(skb);

10
net/nfc/nci/ntf.c
View File

@ -758,6 +758,15 @@ void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
/* strip the nci control header */
skb_pull(skb, NCI_CTRL_HDR_SIZE);
if (nci_opcode_gid(ntf_opcode) == NCI_GID_PROPRIETARY) {
if (nci_prop_ntf_packet(ndev, ntf_opcode, skb)) {
pr_err("unsupported ntf opcode 0x%x\n",
ntf_opcode);
}
goto end;
}
switch (ntf_opcode) {
case NCI_OP_CORE_CONN_CREDITS_NTF:
nci_core_conn_credits_ntf_packet(ndev, skb);
@ -796,5 +805,6 @@ void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
break;
}
end:
kfree_skb(skb);
}

10
net/nfc/nci/rsp.c
View File

@ -296,6 +296,15 @@ void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
/* strip the nci control header */
skb_pull(skb, NCI_CTRL_HDR_SIZE);
if (nci_opcode_gid(rsp_opcode) == NCI_GID_PROPRIETARY) {
if (nci_prop_rsp_packet(ndev, rsp_opcode, skb) == -ENOTSUPP) {
pr_err("unsupported rsp opcode 0x%x\n",
rsp_opcode);
}
goto end;
}
switch (rsp_opcode) {
case NCI_OP_CORE_RESET_RSP:
nci_core_reset_rsp_packet(ndev, skb);
@ -346,6 +355,7 @@ void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
break;
}
end:
kfree_skb(skb);
/* trigger the next cmd */

494
net/nfc/nci/uart.c 100644
View File

@ -0,0 +1,494 @@
/*
* 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.
*/
/* Inspired (hugely) by HCI LDISC implementation in Bluetooth.
*
* Copyright (C) 2000-2001 Qualcomm Incorporated
* Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
* Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ptrace.h>
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/signal.h>
#include <linux/ioctl.h>
#include <linux/skbuff.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
/* TX states */
#define NCI_UART_SENDING 1
#define NCI_UART_TX_WAKEUP 2
static struct nci_uart *nci_uart_drivers[NCI_UART_DRIVER_MAX];
static inline struct sk_buff *nci_uart_dequeue(struct nci_uart *nu)
{
struct sk_buff *skb = nu->tx_skb;
if (!skb)
skb = skb_dequeue(&nu->tx_q);
else
nu->tx_skb = NULL;
return skb;
}
static inline int nci_uart_queue_empty(struct nci_uart *nu)
{
if (nu->tx_skb)
return 0;
return skb_queue_empty(&nu->tx_q);
}
static int nci_uart_tx_wakeup(struct nci_uart *nu)
{
if (test_and_set_bit(NCI_UART_SENDING, &nu->tx_state)) {
set_bit(NCI_UART_TX_WAKEUP, &nu->tx_state);
return 0;
}
schedule_work(&nu->write_work);
return 0;
}
static void nci_uart_write_work(struct work_struct *work)
{
struct nci_uart *nu = container_of(work, struct nci_uart, write_work);
struct tty_struct *tty = nu->tty;
struct sk_buff *skb;
restart:
clear_bit(NCI_UART_TX_WAKEUP, &nu->tx_state);
if (nu->ops.tx_start)
nu->ops.tx_start(nu);
while ((skb = nci_uart_dequeue(nu))) {
int len;
set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
len = tty->ops->write(tty, skb->data, skb->len);
skb_pull(skb, len);
if (skb->len) {
nu->tx_skb = skb;
break;
}
kfree_skb(skb);
}
if (test_bit(NCI_UART_TX_WAKEUP, &nu->tx_state))
goto restart;
if (nu->ops.tx_done && nci_uart_queue_empty(nu))
nu->ops.tx_done(nu);
clear_bit(NCI_UART_SENDING, &nu->tx_state);
}
static int nci_uart_set_driver(struct tty_struct *tty, unsigned int driver)
{
struct nci_uart *nu = NULL;
int ret;
if (driver >= NCI_UART_DRIVER_MAX)
return -EINVAL;
if (!nci_uart_drivers[driver])
return -ENOENT;
nu = kzalloc(sizeof(*nu), GFP_KERNEL);
if (!nu)
return -ENOMEM;
memcpy(nu, nci_uart_drivers[driver], sizeof(struct nci_uart));
nu->tty = tty;
tty->disc_data = nu;
skb_queue_head_init(&nu->tx_q);
INIT_WORK(&nu->write_work, nci_uart_write_work);
spin_lock_init(&nu->rx_lock);
ret = nu->ops.open(nu);
if (ret) {
tty->disc_data = NULL;
kfree(nu);
} else if (!try_module_get(nu->owner)) {
nu->ops.close(nu);
tty->disc_data = NULL;
kfree(nu);
return -ENOENT;
}
return ret;
}
/* ------ LDISC part ------ */
/* nci_uart_tty_open
*
* Called when line discipline changed to NCI_UART.
*
* Arguments:
* tty pointer to tty info structure
* Return Value:
* 0 if success, otherwise error code
*/
static int nci_uart_tty_open(struct tty_struct *tty)
{
/* Error if the tty has no write op instead of leaving an exploitable
* hole
*/
if (!tty->ops->write)
return -EOPNOTSUPP;
tty->disc_data = NULL;
tty->receive_room = 65536;
/* Flush any pending characters in the driver and line discipline. */
/* FIXME: why is this needed. Note don't use ldisc_ref here as the
* open path is before the ldisc is referencable.
*/
if (tty->ldisc->ops->flush_buffer)
tty->ldisc->ops->flush_buffer(tty);
tty_driver_flush_buffer(tty);
return 0;
}
/* nci_uart_tty_close()
*
* Called when the line discipline is changed to something
* else, the tty is closed, or the tty detects a hangup.
*/
static void nci_uart_tty_close(struct tty_struct *tty)
{
struct nci_uart *nu = (void *)tty->disc_data;
/* Detach from the tty */
tty->disc_data = NULL;
if (!nu)
return;
if (nu->tx_skb)
kfree_skb(nu->tx_skb);
if (nu->rx_skb)
kfree_skb(nu->rx_skb);
skb_queue_purge(&nu->tx_q);
nu->ops.close(nu);
nu->tty = NULL;
module_put(nu->owner);
cancel_work_sync(&nu->write_work);
kfree(nu);
}
/* nci_uart_tty_wakeup()
*
* Callback for transmit wakeup. Called when low level
* device driver can accept more send data.
*
* Arguments: tty pointer to associated tty instance data
* Return Value: None
*/
static void nci_uart_tty_wakeup(struct tty_struct *tty)
{
struct nci_uart *nu = (void *)tty->disc_data;
if (!nu)
return;
clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
if (tty != nu->tty)
return;
nci_uart_tx_wakeup(nu);
}
/* nci_uart_tty_receive()
*
* Called by tty low level driver when receive data is
* available.
*
* Arguments: tty pointer to tty isntance data
* data pointer to received data
* flags pointer to flags for data
* count count of received data in bytes
*
* Return Value: None
*/
static void nci_uart_tty_receive(struct tty_struct *tty, const u8 *data,
char *flags, int count)
{
struct nci_uart *nu = (void *)tty->disc_data;
if (!nu || tty != nu->tty)
return;
spin_lock(&nu->rx_lock);
nu->ops.recv_buf(nu, (void *)data, flags, count);
spin_unlock(&nu->rx_lock);
tty_unthrottle(tty);
}
/* nci_uart_tty_ioctl()
*
* Process IOCTL system call for the tty device.
*
* Arguments:
*
* tty pointer to tty instance data
* file pointer to open file object for device
* cmd IOCTL command code
* arg argument for IOCTL call (cmd dependent)
*
* Return Value: Command dependent
*/
static int nci_uart_tty_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct nci_uart *nu = (void *)tty->disc_data;
int err = 0;
switch (cmd) {
case NCIUARTSETDRIVER:
if (!nu)
return nci_uart_set_driver(tty, (unsigned int)arg);
else
return -EBUSY;
break;
default:
err = n_tty_ioctl_helper(tty, file, cmd, arg);
break;
}
return err;
}
/* We don't provide read/write/poll interface for user space. */
static ssize_t nci_uart_tty_read(struct tty_struct *tty, struct file *file,
unsigned char __user *buf, size_t nr)
{
return 0;
}
static ssize_t nci_uart_tty_write(struct tty_struct *tty, struct file *file,
const unsigned char *data, size_t count)
{
return 0;
}
static unsigned int nci_uart_tty_poll(struct tty_struct *tty,
struct file *filp, poll_table *wait)
{
return 0;
}
static int nci_uart_send(struct nci_uart *nu, struct sk_buff *skb)
{
/* Queue TX packet */
skb_queue_tail(&nu->tx_q, skb);
/* Try to start TX (if possible) */
nci_uart_tx_wakeup(nu);
return 0;
}
/* -- Default recv_buf handler --
*
* This handler supposes that NCI frames are sent over UART link without any
* framing. It reads NCI header, retrieve the packet size and once all packet
* bytes are received it passes it to nci_uart driver for processing.
*/
static int nci_uart_default_recv_buf(struct nci_uart *nu, const u8 *data,
char *flags, int count)
{
int chunk_len;
if (!nu->ndev) {
nfc_err(nu->tty->dev,
"receive data from tty but no NCI dev is attached yet, drop buffer\n");
return 0;
}
/* Decode all incoming data in packets
* and enqueue then for processing.
*/
while (count > 0) {
/* If this is the first data of a packet, allocate a buffer */
if (!nu->rx_skb) {
nu->rx_packet_len = -1;
nu->rx_skb = nci_skb_alloc(nu->ndev,
NCI_MAX_PACKET_SIZE,
GFP_KERNEL);
if (!nu->rx_skb)
return -ENOMEM;
}
/* Eat byte after byte till full packet header is received */
if (nu->rx_skb->len < NCI_CTRL_HDR_SIZE) {
*skb_put(nu->rx_skb, 1) = *data++;
--count;
continue;
}
/* Header was received but packet len was not read */
if (nu->rx_packet_len < 0)
nu->rx_packet_len = NCI_CTRL_HDR_SIZE +
nci_plen(nu->rx_skb->data);
/* Compute how many bytes are missing and how many bytes can
* be consumed.
*/
chunk_len = nu->rx_packet_len - nu->rx_skb->len;
if (count < chunk_len)
chunk_len = count;
memcpy(skb_put(nu->rx_skb, chunk_len), data, chunk_len);
data += chunk_len;
count -= chunk_len;
/* Chcek if packet is fully received */
if (nu->rx_packet_len == nu->rx_skb->len) {
/* Pass RX packet to driver */
if (nu->ops.recv(nu, nu->rx_skb) != 0)
nfc_err(nu->tty->dev, "corrupted RX packet\n");
/* Next packet will be a new one */
nu->rx_skb = NULL;
}
}
return 0;
}
/* -- Default recv handler -- */
static int nci_uart_default_recv(struct nci_uart *nu, struct sk_buff *skb)
{
return nci_recv_frame(nu->ndev, skb);
}
int nci_uart_register(struct nci_uart *nu)
{
if (!nu || !nu->ops.open ||
!nu->ops.recv || !nu->ops.close)
return -EINVAL;
/* Set the send callback */
nu->ops.send = nci_uart_send;
/* Install default handlers if not overridden */
if (!nu->ops.recv_buf)
nu->ops.recv_buf = nci_uart_default_recv_buf;
if (!nu->ops.recv)
nu->ops.recv = nci_uart_default_recv;
/* Add this driver in the driver list */
if (!nci_uart_drivers[nu->driver]) {
pr_err("driver %d is already registered\n", nu->driver);
return -EBUSY;
}
nci_uart_drivers[nu->driver] = nu;
pr_info("NCI uart driver '%s [%d]' registered\n", nu->name, nu->driver);
return 0;
}
EXPORT_SYMBOL_GPL(nci_uart_register);
void nci_uart_unregister(struct nci_uart *nu)
{
pr_info("NCI uart driver '%s [%d]' unregistered\n", nu->name,
nu->driver);
/* Remove this driver from the driver list */
nci_uart_drivers[nu->driver] = NULL;
}
EXPORT_SYMBOL_GPL(nci_uart_unregister);
void nci_uart_set_config(struct nci_uart *nu, int baudrate, int flow_ctrl)
{
struct ktermios new_termios;
if (!nu->tty)
return;
down_read(&nu->tty->termios_rwsem);
new_termios = nu->tty->termios;
up_read(&nu->tty->termios_rwsem);
tty_termios_encode_baud_rate(&new_termios, baudrate, baudrate);
if (flow_ctrl)
new_termios.c_cflag |= CRTSCTS;
else
new_termios.c_cflag &= ~CRTSCTS;
tty_set_termios(nu->tty, &new_termios);
}
EXPORT_SYMBOL_GPL(nci_uart_set_config);
static struct tty_ldisc_ops nci_uart_ldisc = {
.magic = TTY_LDISC_MAGIC,
.owner = THIS_MODULE,
.name = "n_nci",
.open = nci_uart_tty_open,
.close = nci_uart_tty_close,
.read = nci_uart_tty_read,
.write = nci_uart_tty_write,
.poll = nci_uart_tty_poll,
.receive_buf = nci_uart_tty_receive,
.write_wakeup = nci_uart_tty_wakeup,
.ioctl = nci_uart_tty_ioctl,
};
static int __init nci_uart_init(void)
{
memset(nci_uart_drivers, 0, sizeof(nci_uart_drivers));
return tty_register_ldisc(N_NCI, &nci_uart_ldisc);
}
static void __exit nci_uart_exit(void)
{
tty_unregister_ldisc(N_NCI);
}
module_init(nci_uart_init);
module_exit(nci_uart_exit);
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("NFC NCI UART driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS_LDISC(N_NCI);

55
net/nfc/netlink.c
View File

@ -5,6 +5,12 @@
* Lauro Ramos Venancio <lauro.venancio@openbossa.org>
* Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
*
* Vendor commands implementation based on net/wireless/nl80211.c
* which is:
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@ -1489,6 +1495,50 @@ static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
}
static int nfc_genl_vendor_cmd(struct sk_buff *skb,
struct genl_info *info)
{
struct nfc_dev *dev;
struct nfc_vendor_cmd *cmd;
u32 dev_idx, vid, subcmd;
u8 *data;
size_t data_len;
int i;
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
!info->attrs[NFC_ATTR_VENDOR_ID] ||
!info->attrs[NFC_ATTR_VENDOR_SUBCMD])
return -EINVAL;
dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
dev = nfc_get_device(dev_idx);
if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
return -ENODEV;
data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
if (data) {
data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
if (data_len == 0)
return -EINVAL;
} else {
data_len = 0;
}
for (i = 0; i < dev->n_vendor_cmds; i++) {
cmd = &dev->vendor_cmds[i];
if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
continue;
return cmd->doit(dev, data, data_len);
}
return -EOPNOTSUPP;
}
static const struct genl_ops nfc_genl_ops[] = {
{
.cmd = NFC_CMD_GET_DEVICE,
@ -1579,6 +1629,11 @@ static const struct genl_ops nfc_genl_ops[] = {
.doit = nfc_genl_activate_target,
.policy = nfc_genl_policy,
},
{
.cmd = NFC_CMD_VENDOR,
.doit = nfc_genl_vendor_cmd,
.policy = nfc_genl_policy,
},
};