![Filip Aben](/assets/img/avatar_default.png)
This patch adds a new product ID to the hso driver. Signed-off-by: Filip Aben <f.aben@option.com> Signed-off-by: David S. Miller <davem@davemloft.net>
3402 lines
86 KiB
C
3402 lines
86 KiB
C
/******************************************************************************
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*
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* Driver for Option High Speed Mobile Devices.
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*
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* Copyright (C) 2008 Option International
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* Filip Aben <f.aben@option.com>
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* Denis Joseph Barrow <d.barow@option.com>
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* Jan Dumon <j.dumon@option.com>
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* Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
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* <ajb@spheresystems.co.uk>
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* Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
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* Copyright (C) 2008 Novell, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA
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*
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* Description of the device:
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*
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* Interface 0: Contains the IP network interface on the bulk end points.
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* The multiplexed serial ports are using the interrupt and
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* control endpoints.
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* Interrupt contains a bitmap telling which multiplexed
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* serialport needs servicing.
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*
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* Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
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* port is opened, as this have a huge impact on the network port
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* throughput.
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*
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* Interface 2: Standard modem interface - circuit switched interface, this
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* can be used to make a standard ppp connection however it
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* should not be used in conjunction with the IP network interface
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* enabled for USB performance reasons i.e. if using this set
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* ideally disable_net=1.
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*
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*****************************************************************************/
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/module.h>
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#include <linux/ethtool.h>
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#include <linux/usb.h>
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#include <linux/timer.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/kmod.h>
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#include <linux/rfkill.h>
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#include <linux/ip.h>
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#include <linux/uaccess.h>
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#include <linux/usb/cdc.h>
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#include <net/arp.h>
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#include <asm/byteorder.h>
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#include <linux/serial_core.h>
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#include <linux/serial.h>
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#define MOD_AUTHOR "Option Wireless"
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#define MOD_DESCRIPTION "USB High Speed Option driver"
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#define MOD_LICENSE "GPL"
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#define HSO_MAX_NET_DEVICES 10
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#define HSO__MAX_MTU 2048
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#define DEFAULT_MTU 1500
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#define DEFAULT_MRU 1500
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#define CTRL_URB_RX_SIZE 1024
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#define CTRL_URB_TX_SIZE 64
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#define BULK_URB_RX_SIZE 4096
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#define BULK_URB_TX_SIZE 8192
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#define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
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#define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
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#define MUX_BULK_RX_BUF_COUNT 4
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#define USB_TYPE_OPTION_VENDOR 0x20
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/* These definitions are used with the struct hso_net flags element */
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/* - use *_bit operations on it. (bit indices not values.) */
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#define HSO_NET_RUNNING 0
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#define HSO_NET_TX_TIMEOUT (HZ*10)
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#define HSO_SERIAL_MAGIC 0x48534f31
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/* Number of ttys to handle */
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#define HSO_SERIAL_TTY_MINORS 256
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#define MAX_RX_URBS 2
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static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty)
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{
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if (tty)
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return tty->driver_data;
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return NULL;
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}
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/*****************************************************************************/
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/* Debugging functions */
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/*****************************************************************************/
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#define D__(lvl_, fmt, arg...) \
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do { \
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printk(lvl_ "[%d:%s]: " fmt "\n", \
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__LINE__, __func__, ## arg); \
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} while (0)
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#define D_(lvl, args...) \
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do { \
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if (lvl & debug) \
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D__(KERN_INFO, args); \
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} while (0)
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#define D1(args...) D_(0x01, ##args)
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#define D2(args...) D_(0x02, ##args)
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#define D3(args...) D_(0x04, ##args)
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#define D4(args...) D_(0x08, ##args)
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#define D5(args...) D_(0x10, ##args)
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/*****************************************************************************/
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/* Enumerators */
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/*****************************************************************************/
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enum pkt_parse_state {
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WAIT_IP,
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WAIT_DATA,
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WAIT_SYNC
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};
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/*****************************************************************************/
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/* Structs */
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/*****************************************************************************/
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struct hso_shared_int {
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struct usb_endpoint_descriptor *intr_endp;
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void *shared_intr_buf;
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struct urb *shared_intr_urb;
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struct usb_device *usb;
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int use_count;
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int ref_count;
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struct mutex shared_int_lock;
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};
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struct hso_net {
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struct hso_device *parent;
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struct net_device *net;
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struct rfkill *rfkill;
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struct usb_endpoint_descriptor *in_endp;
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struct usb_endpoint_descriptor *out_endp;
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struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
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struct urb *mux_bulk_tx_urb;
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void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
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void *mux_bulk_tx_buf;
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struct sk_buff *skb_rx_buf;
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struct sk_buff *skb_tx_buf;
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enum pkt_parse_state rx_parse_state;
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spinlock_t net_lock;
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unsigned short rx_buf_size;
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unsigned short rx_buf_missing;
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struct iphdr rx_ip_hdr;
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unsigned long flags;
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};
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enum rx_ctrl_state{
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RX_IDLE,
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RX_SENT,
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RX_PENDING
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};
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#define BM_REQUEST_TYPE (0xa1)
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#define B_NOTIFICATION (0x20)
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#define W_VALUE (0x0)
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#define W_INDEX (0x2)
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#define W_LENGTH (0x2)
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#define B_OVERRUN (0x1<<6)
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#define B_PARITY (0x1<<5)
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#define B_FRAMING (0x1<<4)
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#define B_RING_SIGNAL (0x1<<3)
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#define B_BREAK (0x1<<2)
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#define B_TX_CARRIER (0x1<<1)
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#define B_RX_CARRIER (0x1<<0)
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struct hso_serial_state_notification {
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u8 bmRequestType;
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u8 bNotification;
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u16 wValue;
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u16 wIndex;
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u16 wLength;
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u16 UART_state_bitmap;
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} __packed;
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struct hso_tiocmget {
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struct mutex mutex;
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wait_queue_head_t waitq;
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int intr_completed;
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struct usb_endpoint_descriptor *endp;
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struct urb *urb;
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struct hso_serial_state_notification serial_state_notification;
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u16 prev_UART_state_bitmap;
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struct uart_icount icount;
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};
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struct hso_serial {
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struct hso_device *parent;
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int magic;
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u8 minor;
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struct hso_shared_int *shared_int;
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/* rx/tx urb could be either a bulk urb or a control urb depending
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on which serial port it is used on. */
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struct urb *rx_urb[MAX_RX_URBS];
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u8 num_rx_urbs;
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u8 *rx_data[MAX_RX_URBS];
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u16 rx_data_length; /* should contain allocated length */
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struct urb *tx_urb;
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u8 *tx_data;
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u8 *tx_buffer;
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u16 tx_data_length; /* should contain allocated length */
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u16 tx_data_count;
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u16 tx_buffer_count;
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struct usb_ctrlrequest ctrl_req_tx;
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struct usb_ctrlrequest ctrl_req_rx;
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struct usb_endpoint_descriptor *in_endp;
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struct usb_endpoint_descriptor *out_endp;
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enum rx_ctrl_state rx_state;
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u8 rts_state;
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u8 dtr_state;
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unsigned tx_urb_used:1;
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/* from usb_serial_port */
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struct tty_struct *tty;
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int open_count;
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spinlock_t serial_lock;
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int (*write_data) (struct hso_serial *serial);
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struct hso_tiocmget *tiocmget;
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/* Hacks required to get flow control
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* working on the serial receive buffers
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* so as not to drop characters on the floor.
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*/
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int curr_rx_urb_idx;
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u16 curr_rx_urb_offset;
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u8 rx_urb_filled[MAX_RX_URBS];
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struct tasklet_struct unthrottle_tasklet;
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struct work_struct retry_unthrottle_workqueue;
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};
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struct hso_device {
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union {
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struct hso_serial *dev_serial;
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struct hso_net *dev_net;
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} port_data;
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u32 port_spec;
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u8 is_active;
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u8 usb_gone;
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struct work_struct async_get_intf;
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struct work_struct async_put_intf;
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struct work_struct reset_device;
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struct usb_device *usb;
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struct usb_interface *interface;
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struct device *dev;
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struct kref ref;
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struct mutex mutex;
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};
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/* Type of interface */
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#define HSO_INTF_MASK 0xFF00
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#define HSO_INTF_MUX 0x0100
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#define HSO_INTF_BULK 0x0200
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/* Type of port */
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#define HSO_PORT_MASK 0xFF
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#define HSO_PORT_NO_PORT 0x0
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#define HSO_PORT_CONTROL 0x1
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#define HSO_PORT_APP 0x2
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#define HSO_PORT_GPS 0x3
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#define HSO_PORT_PCSC 0x4
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#define HSO_PORT_APP2 0x5
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#define HSO_PORT_GPS_CONTROL 0x6
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#define HSO_PORT_MSD 0x7
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#define HSO_PORT_VOICE 0x8
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#define HSO_PORT_DIAG2 0x9
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#define HSO_PORT_DIAG 0x10
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#define HSO_PORT_MODEM 0x11
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#define HSO_PORT_NETWORK 0x12
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/* Additional device info */
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#define HSO_INFO_MASK 0xFF000000
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#define HSO_INFO_CRC_BUG 0x01000000
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/*****************************************************************************/
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/* Prototypes */
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/*****************************************************************************/
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/* Serial driver functions */
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static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear);
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static void ctrl_callback(struct urb *urb);
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static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
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static void hso_kick_transmit(struct hso_serial *serial);
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/* Helper functions */
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static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
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struct usb_device *usb, gfp_t gfp);
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static void handle_usb_error(int status, const char *function,
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struct hso_device *hso_dev);
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static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
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int type, int dir);
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static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
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static void hso_free_interface(struct usb_interface *intf);
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static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
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static int hso_stop_serial_device(struct hso_device *hso_dev);
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static int hso_start_net_device(struct hso_device *hso_dev);
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static void hso_free_shared_int(struct hso_shared_int *shared_int);
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static int hso_stop_net_device(struct hso_device *hso_dev);
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static void hso_serial_ref_free(struct kref *ref);
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static void hso_std_serial_read_bulk_callback(struct urb *urb);
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static int hso_mux_serial_read(struct hso_serial *serial);
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static void async_get_intf(struct work_struct *data);
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static void async_put_intf(struct work_struct *data);
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static int hso_put_activity(struct hso_device *hso_dev);
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static int hso_get_activity(struct hso_device *hso_dev);
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static void tiocmget_intr_callback(struct urb *urb);
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static void reset_device(struct work_struct *data);
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/*****************************************************************************/
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/* Helping functions */
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/*****************************************************************************/
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/* #define DEBUG */
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static inline struct hso_net *dev2net(struct hso_device *hso_dev)
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{
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return hso_dev->port_data.dev_net;
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}
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static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
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{
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return hso_dev->port_data.dev_serial;
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}
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/* Debugging functions */
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#ifdef DEBUG
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static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
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unsigned int len)
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{
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static char name[255];
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sprintf(name, "hso[%d:%s]", line_count, func_name);
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print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
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}
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#define DUMP(buf_, len_) \
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dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
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#define DUMP1(buf_, len_) \
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do { \
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if (0x01 & debug) \
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DUMP(buf_, len_); \
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} while (0)
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#else
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#define DUMP(buf_, len_)
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#define DUMP1(buf_, len_)
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#endif
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/* module parameters */
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static int debug;
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static int tty_major;
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static int disable_net;
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/* driver info */
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static const char driver_name[] = "hso";
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static const char tty_filename[] = "ttyHS";
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static const char *version = __FILE__ ": " MOD_AUTHOR;
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/* the usb driver itself (registered in hso_init) */
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static struct usb_driver hso_driver;
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/* serial structures */
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static struct tty_driver *tty_drv;
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static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
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static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
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static spinlock_t serial_table_lock;
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static const s32 default_port_spec[] = {
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HSO_INTF_MUX | HSO_PORT_NETWORK,
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HSO_INTF_BULK | HSO_PORT_DIAG,
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HSO_INTF_BULK | HSO_PORT_MODEM,
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0
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};
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static const s32 icon321_port_spec[] = {
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HSO_INTF_MUX | HSO_PORT_NETWORK,
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HSO_INTF_BULK | HSO_PORT_DIAG2,
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HSO_INTF_BULK | HSO_PORT_MODEM,
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HSO_INTF_BULK | HSO_PORT_DIAG,
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0
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};
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#define default_port_device(vendor, product) \
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USB_DEVICE(vendor, product), \
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.driver_info = (kernel_ulong_t)default_port_spec
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#define icon321_port_device(vendor, product) \
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USB_DEVICE(vendor, product), \
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.driver_info = (kernel_ulong_t)icon321_port_spec
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/* list of devices we support */
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static const struct usb_device_id hso_ids[] = {
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{default_port_device(0x0af0, 0x6711)},
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{default_port_device(0x0af0, 0x6731)},
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{default_port_device(0x0af0, 0x6751)},
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{default_port_device(0x0af0, 0x6771)},
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{default_port_device(0x0af0, 0x6791)},
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{default_port_device(0x0af0, 0x6811)},
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{default_port_device(0x0af0, 0x6911)},
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{default_port_device(0x0af0, 0x6951)},
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{default_port_device(0x0af0, 0x6971)},
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{default_port_device(0x0af0, 0x7011)},
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{default_port_device(0x0af0, 0x7031)},
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{default_port_device(0x0af0, 0x7051)},
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{default_port_device(0x0af0, 0x7071)},
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{default_port_device(0x0af0, 0x7111)},
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{default_port_device(0x0af0, 0x7211)},
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{default_port_device(0x0af0, 0x7251)},
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{default_port_device(0x0af0, 0x7271)},
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{default_port_device(0x0af0, 0x7311)},
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{default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
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{icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
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{icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
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{icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
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{USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
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{USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
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{USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
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{USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
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{USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
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{USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
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{USB_DEVICE(0x0af0, 0x7701)},
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{USB_DEVICE(0x0af0, 0x7706)},
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{USB_DEVICE(0x0af0, 0x7801)},
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{USB_DEVICE(0x0af0, 0x7901)},
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{USB_DEVICE(0x0af0, 0x7A01)},
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{USB_DEVICE(0x0af0, 0x7A05)},
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{USB_DEVICE(0x0af0, 0x8200)},
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{USB_DEVICE(0x0af0, 0x8201)},
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{USB_DEVICE(0x0af0, 0x8300)},
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{USB_DEVICE(0x0af0, 0x8302)},
|
|
{USB_DEVICE(0x0af0, 0x8304)},
|
|
{USB_DEVICE(0x0af0, 0x8400)},
|
|
{USB_DEVICE(0x0af0, 0x8600)},
|
|
{USB_DEVICE(0x0af0, 0x8800)},
|
|
{USB_DEVICE(0x0af0, 0x8900)},
|
|
{USB_DEVICE(0x0af0, 0x9000)},
|
|
{USB_DEVICE(0x0af0, 0xd035)},
|
|
{USB_DEVICE(0x0af0, 0xd055)},
|
|
{USB_DEVICE(0x0af0, 0xd155)},
|
|
{USB_DEVICE(0x0af0, 0xd255)},
|
|
{USB_DEVICE(0x0af0, 0xd057)},
|
|
{USB_DEVICE(0x0af0, 0xd157)},
|
|
{USB_DEVICE(0x0af0, 0xd257)},
|
|
{USB_DEVICE(0x0af0, 0xd357)},
|
|
{USB_DEVICE(0x0af0, 0xd058)},
|
|
{USB_DEVICE(0x0af0, 0xc100)},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, hso_ids);
|
|
|
|
/* Sysfs attribute */
|
|
static ssize_t hso_sysfs_show_porttype(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct hso_device *hso_dev = dev_get_drvdata(dev);
|
|
char *port_name;
|
|
|
|
if (!hso_dev)
|
|
return 0;
|
|
|
|
switch (hso_dev->port_spec & HSO_PORT_MASK) {
|
|
case HSO_PORT_CONTROL:
|
|
port_name = "Control";
|
|
break;
|
|
case HSO_PORT_APP:
|
|
port_name = "Application";
|
|
break;
|
|
case HSO_PORT_APP2:
|
|
port_name = "Application2";
|
|
break;
|
|
case HSO_PORT_GPS:
|
|
port_name = "GPS";
|
|
break;
|
|
case HSO_PORT_GPS_CONTROL:
|
|
port_name = "GPS Control";
|
|
break;
|
|
case HSO_PORT_PCSC:
|
|
port_name = "PCSC";
|
|
break;
|
|
case HSO_PORT_DIAG:
|
|
port_name = "Diagnostic";
|
|
break;
|
|
case HSO_PORT_DIAG2:
|
|
port_name = "Diagnostic2";
|
|
break;
|
|
case HSO_PORT_MODEM:
|
|
port_name = "Modem";
|
|
break;
|
|
case HSO_PORT_NETWORK:
|
|
port_name = "Network";
|
|
break;
|
|
default:
|
|
port_name = "Unknown";
|
|
break;
|
|
}
|
|
|
|
return sprintf(buf, "%s\n", port_name);
|
|
}
|
|
static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
|
|
|
|
static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
|
|
{
|
|
int idx;
|
|
|
|
for (idx = 0; idx < serial->num_rx_urbs; idx++)
|
|
if (serial->rx_urb[idx] == urb)
|
|
return idx;
|
|
dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
|
|
return -1;
|
|
}
|
|
|
|
/* converts mux value to a port spec value */
|
|
static u32 hso_mux_to_port(int mux)
|
|
{
|
|
u32 result;
|
|
|
|
switch (mux) {
|
|
case 0x1:
|
|
result = HSO_PORT_CONTROL;
|
|
break;
|
|
case 0x2:
|
|
result = HSO_PORT_APP;
|
|
break;
|
|
case 0x4:
|
|
result = HSO_PORT_PCSC;
|
|
break;
|
|
case 0x8:
|
|
result = HSO_PORT_GPS;
|
|
break;
|
|
case 0x10:
|
|
result = HSO_PORT_APP2;
|
|
break;
|
|
default:
|
|
result = HSO_PORT_NO_PORT;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* converts port spec value to a mux value */
|
|
static u32 hso_port_to_mux(int port)
|
|
{
|
|
u32 result;
|
|
|
|
switch (port & HSO_PORT_MASK) {
|
|
case HSO_PORT_CONTROL:
|
|
result = 0x0;
|
|
break;
|
|
case HSO_PORT_APP:
|
|
result = 0x1;
|
|
break;
|
|
case HSO_PORT_PCSC:
|
|
result = 0x2;
|
|
break;
|
|
case HSO_PORT_GPS:
|
|
result = 0x3;
|
|
break;
|
|
case HSO_PORT_APP2:
|
|
result = 0x4;
|
|
break;
|
|
default:
|
|
result = 0x0;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static struct hso_serial *get_serial_by_shared_int_and_type(
|
|
struct hso_shared_int *shared_int,
|
|
int mux)
|
|
{
|
|
int i, port;
|
|
|
|
port = hso_mux_to_port(mux);
|
|
|
|
for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
|
|
if (serial_table[i] &&
|
|
(dev2ser(serial_table[i])->shared_int == shared_int) &&
|
|
((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
|
|
return dev2ser(serial_table[i]);
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct hso_serial *get_serial_by_index(unsigned index)
|
|
{
|
|
struct hso_serial *serial = NULL;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&serial_table_lock, flags);
|
|
if (serial_table[index])
|
|
serial = dev2ser(serial_table[index]);
|
|
spin_unlock_irqrestore(&serial_table_lock, flags);
|
|
|
|
return serial;
|
|
}
|
|
|
|
static int get_free_serial_index(void)
|
|
{
|
|
int index;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&serial_table_lock, flags);
|
|
for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
|
|
if (serial_table[index] == NULL) {
|
|
spin_unlock_irqrestore(&serial_table_lock, flags);
|
|
return index;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&serial_table_lock, flags);
|
|
|
|
printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
static void set_serial_by_index(unsigned index, struct hso_serial *serial)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&serial_table_lock, flags);
|
|
if (serial)
|
|
serial_table[index] = serial->parent;
|
|
else
|
|
serial_table[index] = NULL;
|
|
spin_unlock_irqrestore(&serial_table_lock, flags);
|
|
}
|
|
|
|
static void handle_usb_error(int status, const char *function,
|
|
struct hso_device *hso_dev)
|
|
{
|
|
char *explanation;
|
|
|
|
switch (status) {
|
|
case -ENODEV:
|
|
explanation = "no device";
|
|
break;
|
|
case -ENOENT:
|
|
explanation = "endpoint not enabled";
|
|
break;
|
|
case -EPIPE:
|
|
explanation = "endpoint stalled";
|
|
break;
|
|
case -ENOSPC:
|
|
explanation = "not enough bandwidth";
|
|
break;
|
|
case -ESHUTDOWN:
|
|
explanation = "device disabled";
|
|
break;
|
|
case -EHOSTUNREACH:
|
|
explanation = "device suspended";
|
|
break;
|
|
case -EINVAL:
|
|
case -EAGAIN:
|
|
case -EFBIG:
|
|
case -EMSGSIZE:
|
|
explanation = "internal error";
|
|
break;
|
|
case -EILSEQ:
|
|
case -EPROTO:
|
|
case -ETIME:
|
|
case -ETIMEDOUT:
|
|
explanation = "protocol error";
|
|
if (hso_dev)
|
|
schedule_work(&hso_dev->reset_device);
|
|
break;
|
|
default:
|
|
explanation = "unknown status";
|
|
break;
|
|
}
|
|
|
|
/* log a meaningful explanation of an USB status */
|
|
D1("%s: received USB status - %s (%d)", function, explanation, status);
|
|
}
|
|
|
|
/* Network interface functions */
|
|
|
|
/* called when net interface is brought up by ifconfig */
|
|
static int hso_net_open(struct net_device *net)
|
|
{
|
|
struct hso_net *odev = netdev_priv(net);
|
|
unsigned long flags = 0;
|
|
|
|
if (!odev) {
|
|
dev_err(&net->dev, "No net device !\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
odev->skb_tx_buf = NULL;
|
|
|
|
/* setup environment */
|
|
spin_lock_irqsave(&odev->net_lock, flags);
|
|
odev->rx_parse_state = WAIT_IP;
|
|
odev->rx_buf_size = 0;
|
|
odev->rx_buf_missing = sizeof(struct iphdr);
|
|
spin_unlock_irqrestore(&odev->net_lock, flags);
|
|
|
|
/* We are up and running. */
|
|
set_bit(HSO_NET_RUNNING, &odev->flags);
|
|
hso_start_net_device(odev->parent);
|
|
|
|
/* Tell the kernel we are ready to start receiving from it */
|
|
netif_start_queue(net);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* called when interface is brought down by ifconfig */
|
|
static int hso_net_close(struct net_device *net)
|
|
{
|
|
struct hso_net *odev = netdev_priv(net);
|
|
|
|
/* we don't need the queue anymore */
|
|
netif_stop_queue(net);
|
|
/* no longer running */
|
|
clear_bit(HSO_NET_RUNNING, &odev->flags);
|
|
|
|
hso_stop_net_device(odev->parent);
|
|
|
|
/* done */
|
|
return 0;
|
|
}
|
|
|
|
/* USB tells is xmit done, we should start the netqueue again */
|
|
static void write_bulk_callback(struct urb *urb)
|
|
{
|
|
struct hso_net *odev = urb->context;
|
|
int status = urb->status;
|
|
|
|
/* Sanity check */
|
|
if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
|
|
dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* Do we still have a valid kernel network device? */
|
|
if (!netif_device_present(odev->net)) {
|
|
dev_err(&urb->dev->dev, "%s: net device not present\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
|
|
/* log status, but don't act on it, we don't need to resubmit anything
|
|
* anyhow */
|
|
if (status)
|
|
handle_usb_error(status, __func__, odev->parent);
|
|
|
|
hso_put_activity(odev->parent);
|
|
|
|
/* Tell the network interface we are ready for another frame */
|
|
netif_wake_queue(odev->net);
|
|
}
|
|
|
|
/* called by kernel when we need to transmit a packet */
|
|
static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
|
|
struct net_device *net)
|
|
{
|
|
struct hso_net *odev = netdev_priv(net);
|
|
int result;
|
|
|
|
/* Tell the kernel, "No more frames 'til we are done with this one." */
|
|
netif_stop_queue(net);
|
|
if (hso_get_activity(odev->parent) == -EAGAIN) {
|
|
odev->skb_tx_buf = skb;
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/* log if asked */
|
|
DUMP1(skb->data, skb->len);
|
|
/* Copy it from kernel memory to OUR memory */
|
|
memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
|
|
D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
|
|
|
|
/* Fill in the URB for shipping it out. */
|
|
usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
|
|
odev->parent->usb,
|
|
usb_sndbulkpipe(odev->parent->usb,
|
|
odev->out_endp->
|
|
bEndpointAddress & 0x7F),
|
|
odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
|
|
odev);
|
|
|
|
/* Deal with the Zero Length packet problem, I hope */
|
|
odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
|
|
|
|
/* Send the URB on its merry way. */
|
|
result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_warn(&odev->parent->interface->dev,
|
|
"failed mux_bulk_tx_urb %d\n", result);
|
|
net->stats.tx_errors++;
|
|
netif_start_queue(net);
|
|
} else {
|
|
net->stats.tx_packets++;
|
|
net->stats.tx_bytes += skb->len;
|
|
}
|
|
dev_kfree_skb(skb);
|
|
/* we're done */
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
|
|
{
|
|
struct hso_net *odev = netdev_priv(net);
|
|
|
|
strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
|
|
usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
|
|
}
|
|
|
|
static const struct ethtool_ops ops = {
|
|
.get_drvinfo = hso_get_drvinfo,
|
|
.get_link = ethtool_op_get_link
|
|
};
|
|
|
|
/* called when a packet did not ack after watchdogtimeout */
|
|
static void hso_net_tx_timeout(struct net_device *net)
|
|
{
|
|
struct hso_net *odev = netdev_priv(net);
|
|
|
|
if (!odev)
|
|
return;
|
|
|
|
/* Tell syslog we are hosed. */
|
|
dev_warn(&net->dev, "Tx timed out.\n");
|
|
|
|
/* Tear the waiting frame off the list */
|
|
if (odev->mux_bulk_tx_urb &&
|
|
(odev->mux_bulk_tx_urb->status == -EINPROGRESS))
|
|
usb_unlink_urb(odev->mux_bulk_tx_urb);
|
|
|
|
/* Update statistics */
|
|
net->stats.tx_errors++;
|
|
}
|
|
|
|
/* make a real packet from the received USB buffer */
|
|
static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
|
|
unsigned int count, unsigned char is_eop)
|
|
{
|
|
unsigned short temp_bytes;
|
|
unsigned short buffer_offset = 0;
|
|
unsigned short frame_len;
|
|
unsigned char *tmp_rx_buf;
|
|
|
|
/* log if needed */
|
|
D1("Rx %d bytes", count);
|
|
DUMP(ip_pkt, min(128, (int)count));
|
|
|
|
while (count) {
|
|
switch (odev->rx_parse_state) {
|
|
case WAIT_IP:
|
|
/* waiting for IP header. */
|
|
/* wanted bytes - size of ip header */
|
|
temp_bytes =
|
|
(count <
|
|
odev->rx_buf_missing) ? count : odev->
|
|
rx_buf_missing;
|
|
|
|
memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
|
|
odev->rx_buf_size, ip_pkt + buffer_offset,
|
|
temp_bytes);
|
|
|
|
odev->rx_buf_size += temp_bytes;
|
|
buffer_offset += temp_bytes;
|
|
odev->rx_buf_missing -= temp_bytes;
|
|
count -= temp_bytes;
|
|
|
|
if (!odev->rx_buf_missing) {
|
|
/* header is complete allocate an sk_buffer and
|
|
* continue to WAIT_DATA */
|
|
frame_len = ntohs(odev->rx_ip_hdr.tot_len);
|
|
|
|
if ((frame_len > DEFAULT_MRU) ||
|
|
(frame_len < sizeof(struct iphdr))) {
|
|
dev_err(&odev->net->dev,
|
|
"Invalid frame (%d) length\n",
|
|
frame_len);
|
|
odev->rx_parse_state = WAIT_SYNC;
|
|
continue;
|
|
}
|
|
/* Allocate an sk_buff */
|
|
odev->skb_rx_buf = netdev_alloc_skb(odev->net,
|
|
frame_len);
|
|
if (!odev->skb_rx_buf) {
|
|
/* We got no receive buffer. */
|
|
D1("could not allocate memory");
|
|
odev->rx_parse_state = WAIT_SYNC;
|
|
return;
|
|
}
|
|
|
|
/* Copy what we got so far. make room for iphdr
|
|
* after tail. */
|
|
tmp_rx_buf =
|
|
skb_put(odev->skb_rx_buf,
|
|
sizeof(struct iphdr));
|
|
memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
|
|
sizeof(struct iphdr));
|
|
|
|
/* ETH_HLEN */
|
|
odev->rx_buf_size = sizeof(struct iphdr);
|
|
|
|
/* Filip actually use .tot_len */
|
|
odev->rx_buf_missing =
|
|
frame_len - sizeof(struct iphdr);
|
|
odev->rx_parse_state = WAIT_DATA;
|
|
}
|
|
break;
|
|
|
|
case WAIT_DATA:
|
|
temp_bytes = (count < odev->rx_buf_missing)
|
|
? count : odev->rx_buf_missing;
|
|
|
|
/* Copy the rest of the bytes that are left in the
|
|
* buffer into the waiting sk_buf. */
|
|
/* Make room for temp_bytes after tail. */
|
|
tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
|
|
memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
|
|
|
|
odev->rx_buf_missing -= temp_bytes;
|
|
count -= temp_bytes;
|
|
buffer_offset += temp_bytes;
|
|
odev->rx_buf_size += temp_bytes;
|
|
if (!odev->rx_buf_missing) {
|
|
/* Packet is complete. Inject into stack. */
|
|
/* We have IP packet here */
|
|
odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
|
|
/* don't check it */
|
|
odev->skb_rx_buf->ip_summed =
|
|
CHECKSUM_UNNECESSARY;
|
|
|
|
skb_reset_mac_header(odev->skb_rx_buf);
|
|
|
|
/* Ship it off to the kernel */
|
|
netif_rx(odev->skb_rx_buf);
|
|
/* No longer our buffer. */
|
|
odev->skb_rx_buf = NULL;
|
|
|
|
/* update out statistics */
|
|
odev->net->stats.rx_packets++;
|
|
|
|
odev->net->stats.rx_bytes += odev->rx_buf_size;
|
|
|
|
odev->rx_buf_size = 0;
|
|
odev->rx_buf_missing = sizeof(struct iphdr);
|
|
odev->rx_parse_state = WAIT_IP;
|
|
}
|
|
break;
|
|
|
|
case WAIT_SYNC:
|
|
D1(" W_S");
|
|
count = 0;
|
|
break;
|
|
default:
|
|
D1(" ");
|
|
count--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Recovery mechanism for WAIT_SYNC state. */
|
|
if (is_eop) {
|
|
if (odev->rx_parse_state == WAIT_SYNC) {
|
|
odev->rx_parse_state = WAIT_IP;
|
|
odev->rx_buf_size = 0;
|
|
odev->rx_buf_missing = sizeof(struct iphdr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Moving data from usb to kernel (in interrupt state) */
|
|
static void read_bulk_callback(struct urb *urb)
|
|
{
|
|
struct hso_net *odev = urb->context;
|
|
struct net_device *net;
|
|
int result;
|
|
int status = urb->status;
|
|
|
|
/* is al ok? (Filip: Who's Al ?) */
|
|
if (status) {
|
|
handle_usb_error(status, __func__, odev->parent);
|
|
return;
|
|
}
|
|
|
|
/* Sanity check */
|
|
if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
|
|
D1("BULK IN callback but driver is not active!");
|
|
return;
|
|
}
|
|
usb_mark_last_busy(urb->dev);
|
|
|
|
net = odev->net;
|
|
|
|
if (!netif_device_present(net)) {
|
|
/* Somebody killed our network interface... */
|
|
return;
|
|
}
|
|
|
|
if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
|
|
u32 rest;
|
|
u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
|
|
rest = urb->actual_length %
|
|
le16_to_cpu(odev->in_endp->wMaxPacketSize);
|
|
if (((rest == 5) || (rest == 6)) &&
|
|
!memcmp(((u8 *) urb->transfer_buffer) +
|
|
urb->actual_length - 4, crc_check, 4)) {
|
|
urb->actual_length -= 4;
|
|
}
|
|
}
|
|
|
|
/* do we even have a packet? */
|
|
if (urb->actual_length) {
|
|
/* Handle the IP stream, add header and push it onto network
|
|
* stack if the packet is complete. */
|
|
spin_lock(&odev->net_lock);
|
|
packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
|
|
(urb->transfer_buffer_length >
|
|
urb->actual_length) ? 1 : 0);
|
|
spin_unlock(&odev->net_lock);
|
|
}
|
|
|
|
/* We are done with this URB, resubmit it. Prep the USB to wait for
|
|
* another frame. Reuse same as received. */
|
|
usb_fill_bulk_urb(urb,
|
|
odev->parent->usb,
|
|
usb_rcvbulkpipe(odev->parent->usb,
|
|
odev->in_endp->
|
|
bEndpointAddress & 0x7F),
|
|
urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
|
|
read_bulk_callback, odev);
|
|
|
|
/* Give this to the USB subsystem so it can tell us when more data
|
|
* arrives. */
|
|
result = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (result)
|
|
dev_warn(&odev->parent->interface->dev,
|
|
"%s failed submit mux_bulk_rx_urb %d\n", __func__,
|
|
result);
|
|
}
|
|
|
|
/* Serial driver functions */
|
|
|
|
static void hso_init_termios(struct ktermios *termios)
|
|
{
|
|
/*
|
|
* The default requirements for this device are:
|
|
*/
|
|
termios->c_iflag &=
|
|
~(IGNBRK /* disable ignore break */
|
|
| BRKINT /* disable break causes interrupt */
|
|
| PARMRK /* disable mark parity errors */
|
|
| ISTRIP /* disable clear high bit of input characters */
|
|
| INLCR /* disable translate NL to CR */
|
|
| IGNCR /* disable ignore CR */
|
|
| ICRNL /* disable translate CR to NL */
|
|
| IXON); /* disable enable XON/XOFF flow control */
|
|
|
|
/* disable postprocess output characters */
|
|
termios->c_oflag &= ~OPOST;
|
|
|
|
termios->c_lflag &=
|
|
~(ECHO /* disable echo input characters */
|
|
| ECHONL /* disable echo new line */
|
|
| ICANON /* disable erase, kill, werase, and rprnt
|
|
special characters */
|
|
| ISIG /* disable interrupt, quit, and suspend special
|
|
characters */
|
|
| IEXTEN); /* disable non-POSIX special characters */
|
|
|
|
termios->c_cflag &=
|
|
~(CSIZE /* no size */
|
|
| PARENB /* disable parity bit */
|
|
| CBAUD /* clear current baud rate */
|
|
| CBAUDEX); /* clear current buad rate */
|
|
|
|
termios->c_cflag |= CS8; /* character size 8 bits */
|
|
|
|
/* baud rate 115200 */
|
|
tty_termios_encode_baud_rate(termios, 115200, 115200);
|
|
}
|
|
|
|
static void _hso_serial_set_termios(struct tty_struct *tty,
|
|
struct ktermios *old)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
struct ktermios *termios;
|
|
|
|
if (!serial) {
|
|
printk(KERN_ERR "%s: no tty structures", __func__);
|
|
return;
|
|
}
|
|
|
|
D4("port %d", serial->minor);
|
|
|
|
/*
|
|
* Fix up unsupported bits
|
|
*/
|
|
termios = tty->termios;
|
|
termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
|
|
|
|
termios->c_cflag &=
|
|
~(CSIZE /* no size */
|
|
| PARENB /* disable parity bit */
|
|
| CBAUD /* clear current baud rate */
|
|
| CBAUDEX); /* clear current buad rate */
|
|
|
|
termios->c_cflag |= CS8; /* character size 8 bits */
|
|
|
|
/* baud rate 115200 */
|
|
tty_encode_baud_rate(tty, 115200, 115200);
|
|
}
|
|
|
|
static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
|
|
{
|
|
int result;
|
|
/* We are done with this URB, resubmit it. Prep the USB to wait for
|
|
* another frame */
|
|
usb_fill_bulk_urb(urb, serial->parent->usb,
|
|
usb_rcvbulkpipe(serial->parent->usb,
|
|
serial->in_endp->
|
|
bEndpointAddress & 0x7F),
|
|
urb->transfer_buffer, serial->rx_data_length,
|
|
hso_std_serial_read_bulk_callback, serial);
|
|
/* Give this to the USB subsystem so it can tell us when more data
|
|
* arrives. */
|
|
result = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
|
|
__func__, result);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
|
|
{
|
|
int count;
|
|
struct urb *curr_urb;
|
|
|
|
while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
|
|
curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
|
|
count = put_rxbuf_data(curr_urb, serial);
|
|
if (count == -1)
|
|
return;
|
|
if (count == 0) {
|
|
serial->curr_rx_urb_idx++;
|
|
if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
|
|
serial->curr_rx_urb_idx = 0;
|
|
hso_resubmit_rx_bulk_urb(serial, curr_urb);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
|
|
{
|
|
int count = 0;
|
|
struct urb *urb;
|
|
|
|
urb = serial->rx_urb[0];
|
|
if (serial->open_count > 0) {
|
|
count = put_rxbuf_data(urb, serial);
|
|
if (count == -1)
|
|
return;
|
|
}
|
|
/* Re issue a read as long as we receive data. */
|
|
|
|
if (count == 0 && ((urb->actual_length != 0) ||
|
|
(serial->rx_state == RX_PENDING))) {
|
|
serial->rx_state = RX_SENT;
|
|
hso_mux_serial_read(serial);
|
|
} else
|
|
serial->rx_state = RX_IDLE;
|
|
}
|
|
|
|
|
|
/* read callback for Diag and CS port */
|
|
static void hso_std_serial_read_bulk_callback(struct urb *urb)
|
|
{
|
|
struct hso_serial *serial = urb->context;
|
|
int status = urb->status;
|
|
|
|
/* sanity check */
|
|
if (!serial) {
|
|
D1("serial == NULL");
|
|
return;
|
|
} else if (status) {
|
|
handle_usb_error(status, __func__, serial->parent);
|
|
return;
|
|
}
|
|
|
|
D4("\n--- Got serial_read_bulk callback %02x ---", status);
|
|
D1("Actual length = %d\n", urb->actual_length);
|
|
DUMP1(urb->transfer_buffer, urb->actual_length);
|
|
|
|
/* Anyone listening? */
|
|
if (serial->open_count == 0)
|
|
return;
|
|
|
|
if (status == 0) {
|
|
if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
|
|
u32 rest;
|
|
u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
|
|
rest =
|
|
urb->actual_length %
|
|
le16_to_cpu(serial->in_endp->wMaxPacketSize);
|
|
if (((rest == 5) || (rest == 6)) &&
|
|
!memcmp(((u8 *) urb->transfer_buffer) +
|
|
urb->actual_length - 4, crc_check, 4)) {
|
|
urb->actual_length -= 4;
|
|
}
|
|
}
|
|
/* Valid data, handle RX data */
|
|
spin_lock(&serial->serial_lock);
|
|
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
|
|
put_rxbuf_data_and_resubmit_bulk_urb(serial);
|
|
spin_unlock(&serial->serial_lock);
|
|
} else if (status == -ENOENT || status == -ECONNRESET) {
|
|
/* Unlinked - check for throttled port. */
|
|
D2("Port %d, successfully unlinked urb", serial->minor);
|
|
spin_lock(&serial->serial_lock);
|
|
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
|
|
hso_resubmit_rx_bulk_urb(serial, urb);
|
|
spin_unlock(&serial->serial_lock);
|
|
} else {
|
|
D2("Port %d, status = %d for read urb", serial->minor, status);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This needs to be a tasklet otherwise we will
|
|
* end up recursively calling this function.
|
|
*/
|
|
static void hso_unthrottle_tasklet(struct hso_serial *serial)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
if ((serial->parent->port_spec & HSO_INTF_MUX))
|
|
put_rxbuf_data_and_resubmit_ctrl_urb(serial);
|
|
else
|
|
put_rxbuf_data_and_resubmit_bulk_urb(serial);
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
}
|
|
|
|
static void hso_unthrottle(struct tty_struct *tty)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
|
|
tasklet_hi_schedule(&serial->unthrottle_tasklet);
|
|
}
|
|
|
|
static void hso_unthrottle_workfunc(struct work_struct *work)
|
|
{
|
|
struct hso_serial *serial =
|
|
container_of(work, struct hso_serial,
|
|
retry_unthrottle_workqueue);
|
|
hso_unthrottle_tasklet(serial);
|
|
}
|
|
|
|
/* open the requested serial port */
|
|
static int hso_serial_open(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_index(tty->index);
|
|
int result;
|
|
|
|
/* sanity check */
|
|
if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
|
|
WARN_ON(1);
|
|
tty->driver_data = NULL;
|
|
D1("Failed to open port");
|
|
return -ENODEV;
|
|
}
|
|
|
|
mutex_lock(&serial->parent->mutex);
|
|
result = usb_autopm_get_interface(serial->parent->interface);
|
|
if (result < 0)
|
|
goto err_out;
|
|
|
|
D1("Opening %d", serial->minor);
|
|
kref_get(&serial->parent->ref);
|
|
|
|
/* setup */
|
|
spin_lock_irq(&serial->serial_lock);
|
|
tty->driver_data = serial;
|
|
tty_kref_put(serial->tty);
|
|
serial->tty = tty_kref_get(tty);
|
|
spin_unlock_irq(&serial->serial_lock);
|
|
|
|
/* check for port already opened, if not set the termios */
|
|
serial->open_count++;
|
|
if (serial->open_count == 1) {
|
|
serial->rx_state = RX_IDLE;
|
|
/* Force default termio settings */
|
|
_hso_serial_set_termios(tty, NULL);
|
|
tasklet_init(&serial->unthrottle_tasklet,
|
|
(void (*)(unsigned long))hso_unthrottle_tasklet,
|
|
(unsigned long)serial);
|
|
INIT_WORK(&serial->retry_unthrottle_workqueue,
|
|
hso_unthrottle_workfunc);
|
|
result = hso_start_serial_device(serial->parent, GFP_KERNEL);
|
|
if (result) {
|
|
hso_stop_serial_device(serial->parent);
|
|
serial->open_count--;
|
|
kref_put(&serial->parent->ref, hso_serial_ref_free);
|
|
}
|
|
} else {
|
|
D1("Port was already open");
|
|
}
|
|
|
|
usb_autopm_put_interface(serial->parent->interface);
|
|
|
|
/* done */
|
|
if (result)
|
|
hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
|
|
err_out:
|
|
mutex_unlock(&serial->parent->mutex);
|
|
return result;
|
|
}
|
|
|
|
/* close the requested serial port */
|
|
static void hso_serial_close(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct hso_serial *serial = tty->driver_data;
|
|
u8 usb_gone;
|
|
|
|
D1("Closing serial port");
|
|
|
|
/* Open failed, no close cleanup required */
|
|
if (serial == NULL)
|
|
return;
|
|
|
|
mutex_lock(&serial->parent->mutex);
|
|
usb_gone = serial->parent->usb_gone;
|
|
|
|
if (!usb_gone)
|
|
usb_autopm_get_interface(serial->parent->interface);
|
|
|
|
/* reset the rts and dtr */
|
|
/* do the actual close */
|
|
serial->open_count--;
|
|
|
|
if (serial->open_count <= 0) {
|
|
serial->open_count = 0;
|
|
spin_lock_irq(&serial->serial_lock);
|
|
if (serial->tty == tty) {
|
|
serial->tty->driver_data = NULL;
|
|
serial->tty = NULL;
|
|
tty_kref_put(tty);
|
|
}
|
|
spin_unlock_irq(&serial->serial_lock);
|
|
if (!usb_gone)
|
|
hso_stop_serial_device(serial->parent);
|
|
tasklet_kill(&serial->unthrottle_tasklet);
|
|
cancel_work_sync(&serial->retry_unthrottle_workqueue);
|
|
}
|
|
|
|
if (!usb_gone)
|
|
usb_autopm_put_interface(serial->parent->interface);
|
|
|
|
mutex_unlock(&serial->parent->mutex);
|
|
|
|
kref_put(&serial->parent->ref, hso_serial_ref_free);
|
|
}
|
|
|
|
/* close the requested serial port */
|
|
static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
|
|
int count)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
int space, tx_bytes;
|
|
unsigned long flags;
|
|
|
|
/* sanity check */
|
|
if (serial == NULL) {
|
|
printk(KERN_ERR "%s: serial is NULL\n", __func__);
|
|
return -ENODEV;
|
|
}
|
|
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
|
|
space = serial->tx_data_length - serial->tx_buffer_count;
|
|
tx_bytes = (count < space) ? count : space;
|
|
|
|
if (!tx_bytes)
|
|
goto out;
|
|
|
|
memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
|
|
serial->tx_buffer_count += tx_bytes;
|
|
|
|
out:
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
|
|
hso_kick_transmit(serial);
|
|
/* done */
|
|
return tx_bytes;
|
|
}
|
|
|
|
/* how much room is there for writing */
|
|
static int hso_serial_write_room(struct tty_struct *tty)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
int room;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
room = serial->tx_data_length - serial->tx_buffer_count;
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
|
|
/* return free room */
|
|
return room;
|
|
}
|
|
|
|
/* setup the term */
|
|
static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
unsigned long flags;
|
|
|
|
if (old)
|
|
D5("Termios called with: cflags new[%d] - old[%d]",
|
|
tty->termios->c_cflag, old->c_cflag);
|
|
|
|
/* the actual setup */
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
if (serial->open_count)
|
|
_hso_serial_set_termios(tty, old);
|
|
else
|
|
tty->termios = old;
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
|
|
/* done */
|
|
}
|
|
|
|
/* how many characters in the buffer */
|
|
static int hso_serial_chars_in_buffer(struct tty_struct *tty)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
int chars;
|
|
unsigned long flags;
|
|
|
|
/* sanity check */
|
|
if (serial == NULL)
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
chars = serial->tx_buffer_count;
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
|
|
return chars;
|
|
}
|
|
static int tiocmget_submit_urb(struct hso_serial *serial,
|
|
struct hso_tiocmget *tiocmget,
|
|
struct usb_device *usb)
|
|
{
|
|
int result;
|
|
|
|
if (serial->parent->usb_gone)
|
|
return -ENODEV;
|
|
usb_fill_int_urb(tiocmget->urb, usb,
|
|
usb_rcvintpipe(usb,
|
|
tiocmget->endp->
|
|
bEndpointAddress & 0x7F),
|
|
&tiocmget->serial_state_notification,
|
|
sizeof(struct hso_serial_state_notification),
|
|
tiocmget_intr_callback, serial,
|
|
tiocmget->endp->bInterval);
|
|
result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
|
|
result);
|
|
}
|
|
return result;
|
|
|
|
}
|
|
|
|
static void tiocmget_intr_callback(struct urb *urb)
|
|
{
|
|
struct hso_serial *serial = urb->context;
|
|
struct hso_tiocmget *tiocmget;
|
|
int status = urb->status;
|
|
u16 UART_state_bitmap, prev_UART_state_bitmap;
|
|
struct uart_icount *icount;
|
|
struct hso_serial_state_notification *serial_state_notification;
|
|
struct usb_device *usb;
|
|
|
|
/* Sanity checks */
|
|
if (!serial)
|
|
return;
|
|
if (status) {
|
|
handle_usb_error(status, __func__, serial->parent);
|
|
return;
|
|
}
|
|
tiocmget = serial->tiocmget;
|
|
if (!tiocmget)
|
|
return;
|
|
usb = serial->parent->usb;
|
|
serial_state_notification = &tiocmget->serial_state_notification;
|
|
if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
|
|
serial_state_notification->bNotification != B_NOTIFICATION ||
|
|
le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
|
|
le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
|
|
le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
|
|
dev_warn(&usb->dev,
|
|
"hso received invalid serial state notification\n");
|
|
DUMP(serial_state_notification,
|
|
sizeof(struct hso_serial_state_notification));
|
|
} else {
|
|
|
|
UART_state_bitmap = le16_to_cpu(serial_state_notification->
|
|
UART_state_bitmap);
|
|
prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
|
|
icount = &tiocmget->icount;
|
|
spin_lock(&serial->serial_lock);
|
|
if ((UART_state_bitmap & B_OVERRUN) !=
|
|
(prev_UART_state_bitmap & B_OVERRUN))
|
|
icount->parity++;
|
|
if ((UART_state_bitmap & B_PARITY) !=
|
|
(prev_UART_state_bitmap & B_PARITY))
|
|
icount->parity++;
|
|
if ((UART_state_bitmap & B_FRAMING) !=
|
|
(prev_UART_state_bitmap & B_FRAMING))
|
|
icount->frame++;
|
|
if ((UART_state_bitmap & B_RING_SIGNAL) &&
|
|
!(prev_UART_state_bitmap & B_RING_SIGNAL))
|
|
icount->rng++;
|
|
if ((UART_state_bitmap & B_BREAK) !=
|
|
(prev_UART_state_bitmap & B_BREAK))
|
|
icount->brk++;
|
|
if ((UART_state_bitmap & B_TX_CARRIER) !=
|
|
(prev_UART_state_bitmap & B_TX_CARRIER))
|
|
icount->dsr++;
|
|
if ((UART_state_bitmap & B_RX_CARRIER) !=
|
|
(prev_UART_state_bitmap & B_RX_CARRIER))
|
|
icount->dcd++;
|
|
tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
|
|
spin_unlock(&serial->serial_lock);
|
|
tiocmget->intr_completed = 1;
|
|
wake_up_interruptible(&tiocmget->waitq);
|
|
}
|
|
memset(serial_state_notification, 0,
|
|
sizeof(struct hso_serial_state_notification));
|
|
tiocmget_submit_urb(serial,
|
|
tiocmget,
|
|
serial->parent->usb);
|
|
}
|
|
|
|
/*
|
|
* next few functions largely stolen from drivers/serial/serial_core.c
|
|
*/
|
|
/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
|
|
* - mask passed in arg for lines of interest
|
|
* (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
|
|
* Caller should use TIOCGICOUNT to see which one it was
|
|
*/
|
|
static int
|
|
hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
|
|
{
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
struct uart_icount cprev, cnow;
|
|
struct hso_tiocmget *tiocmget;
|
|
int ret;
|
|
|
|
tiocmget = serial->tiocmget;
|
|
if (!tiocmget)
|
|
return -ENOENT;
|
|
/*
|
|
* note the counters on entry
|
|
*/
|
|
spin_lock_irq(&serial->serial_lock);
|
|
memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
|
|
spin_unlock_irq(&serial->serial_lock);
|
|
add_wait_queue(&tiocmget->waitq, &wait);
|
|
for (;;) {
|
|
spin_lock_irq(&serial->serial_lock);
|
|
memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
|
|
spin_unlock_irq(&serial->serial_lock);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
|
|
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
|
|
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
schedule();
|
|
/* see if a signal did it */
|
|
if (signal_pending(current)) {
|
|
ret = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
cprev = cnow;
|
|
}
|
|
current->state = TASK_RUNNING;
|
|
remove_wait_queue(&tiocmget->waitq, &wait);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
|
|
* Return: write counters to the user passed counter struct
|
|
* NB: both 1->0 and 0->1 transitions are counted except for
|
|
* RI where only 0->1 is counted.
|
|
*/
|
|
static int hso_get_count(struct hso_serial *serial,
|
|
struct serial_icounter_struct __user *icnt)
|
|
{
|
|
struct serial_icounter_struct icount;
|
|
struct uart_icount cnow;
|
|
struct hso_tiocmget *tiocmget = serial->tiocmget;
|
|
|
|
if (!tiocmget)
|
|
return -ENOENT;
|
|
spin_lock_irq(&serial->serial_lock);
|
|
memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
|
|
spin_unlock_irq(&serial->serial_lock);
|
|
|
|
icount.cts = cnow.cts;
|
|
icount.dsr = cnow.dsr;
|
|
icount.rng = cnow.rng;
|
|
icount.dcd = cnow.dcd;
|
|
icount.rx = cnow.rx;
|
|
icount.tx = cnow.tx;
|
|
icount.frame = cnow.frame;
|
|
icount.overrun = cnow.overrun;
|
|
icount.parity = cnow.parity;
|
|
icount.brk = cnow.brk;
|
|
icount.buf_overrun = cnow.buf_overrun;
|
|
|
|
return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
|
|
}
|
|
|
|
|
|
static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
int retval;
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
struct hso_tiocmget *tiocmget;
|
|
u16 UART_state_bitmap;
|
|
|
|
/* sanity check */
|
|
if (!serial) {
|
|
D1("no tty structures");
|
|
return -EINVAL;
|
|
}
|
|
spin_lock_irq(&serial->serial_lock);
|
|
retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
|
|
((serial->dtr_state) ? TIOCM_DTR : 0);
|
|
tiocmget = serial->tiocmget;
|
|
if (tiocmget) {
|
|
|
|
UART_state_bitmap = le16_to_cpu(
|
|
tiocmget->prev_UART_state_bitmap);
|
|
if (UART_state_bitmap & B_RING_SIGNAL)
|
|
retval |= TIOCM_RNG;
|
|
if (UART_state_bitmap & B_RX_CARRIER)
|
|
retval |= TIOCM_CD;
|
|
if (UART_state_bitmap & B_TX_CARRIER)
|
|
retval |= TIOCM_DSR;
|
|
}
|
|
spin_unlock_irq(&serial->serial_lock);
|
|
return retval;
|
|
}
|
|
|
|
static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
int val = 0;
|
|
unsigned long flags;
|
|
int if_num;
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
|
|
/* sanity check */
|
|
if (!serial) {
|
|
D1("no tty structures");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
|
|
return -EINVAL;
|
|
|
|
if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
|
|
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
if (set & TIOCM_RTS)
|
|
serial->rts_state = 1;
|
|
if (set & TIOCM_DTR)
|
|
serial->dtr_state = 1;
|
|
|
|
if (clear & TIOCM_RTS)
|
|
serial->rts_state = 0;
|
|
if (clear & TIOCM_DTR)
|
|
serial->dtr_state = 0;
|
|
|
|
if (serial->dtr_state)
|
|
val |= 0x01;
|
|
if (serial->rts_state)
|
|
val |= 0x02;
|
|
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
|
|
return usb_control_msg(serial->parent->usb,
|
|
usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
|
|
0x21, val, if_num, NULL, 0,
|
|
USB_CTRL_SET_TIMEOUT);
|
|
}
|
|
|
|
static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct hso_serial *serial = get_serial_by_tty(tty);
|
|
void __user *uarg = (void __user *)arg;
|
|
int ret = 0;
|
|
D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
|
|
|
|
if (!serial)
|
|
return -ENODEV;
|
|
switch (cmd) {
|
|
case TIOCMIWAIT:
|
|
ret = hso_wait_modem_status(serial, arg);
|
|
break;
|
|
|
|
case TIOCGICOUNT:
|
|
ret = hso_get_count(serial, uarg);
|
|
break;
|
|
default:
|
|
ret = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* starts a transmit */
|
|
static void hso_kick_transmit(struct hso_serial *serial)
|
|
{
|
|
u8 *temp;
|
|
unsigned long flags;
|
|
int res;
|
|
|
|
spin_lock_irqsave(&serial->serial_lock, flags);
|
|
if (!serial->tx_buffer_count)
|
|
goto out;
|
|
|
|
if (serial->tx_urb_used)
|
|
goto out;
|
|
|
|
/* Wakeup USB interface if necessary */
|
|
if (hso_get_activity(serial->parent) == -EAGAIN)
|
|
goto out;
|
|
|
|
/* Switch pointers around to avoid memcpy */
|
|
temp = serial->tx_buffer;
|
|
serial->tx_buffer = serial->tx_data;
|
|
serial->tx_data = temp;
|
|
serial->tx_data_count = serial->tx_buffer_count;
|
|
serial->tx_buffer_count = 0;
|
|
|
|
/* If temp is set, it means we switched buffers */
|
|
if (temp && serial->write_data) {
|
|
res = serial->write_data(serial);
|
|
if (res >= 0)
|
|
serial->tx_urb_used = 1;
|
|
}
|
|
out:
|
|
spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
}
|
|
|
|
/* make a request (for reading and writing data to muxed serial port) */
|
|
static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
|
|
struct urb *ctrl_urb,
|
|
struct usb_ctrlrequest *ctrl_req,
|
|
u8 *ctrl_urb_data, u32 size)
|
|
{
|
|
int result;
|
|
int pipe;
|
|
|
|
/* Sanity check */
|
|
if (!serial || !ctrl_urb || !ctrl_req) {
|
|
printk(KERN_ERR "%s: Wrong arguments\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* initialize */
|
|
ctrl_req->wValue = 0;
|
|
ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
|
|
ctrl_req->wLength = cpu_to_le16(size);
|
|
|
|
if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
|
|
/* Reading command */
|
|
ctrl_req->bRequestType = USB_DIR_IN |
|
|
USB_TYPE_OPTION_VENDOR |
|
|
USB_RECIP_INTERFACE;
|
|
ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
|
|
pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
|
|
} else {
|
|
/* Writing command */
|
|
ctrl_req->bRequestType = USB_DIR_OUT |
|
|
USB_TYPE_OPTION_VENDOR |
|
|
USB_RECIP_INTERFACE;
|
|
ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
|
|
pipe = usb_sndctrlpipe(serial->parent->usb, 0);
|
|
}
|
|
/* syslog */
|
|
D2("%s command (%02x) len: %d, port: %d",
|
|
type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
|
|
ctrl_req->bRequestType, ctrl_req->wLength, port);
|
|
|
|
/* Load ctrl urb */
|
|
ctrl_urb->transfer_flags = 0;
|
|
usb_fill_control_urb(ctrl_urb,
|
|
serial->parent->usb,
|
|
pipe,
|
|
(u8 *) ctrl_req,
|
|
ctrl_urb_data, size, ctrl_callback, serial);
|
|
/* Send it on merry way */
|
|
result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_err(&ctrl_urb->dev->dev,
|
|
"%s failed submit ctrl_urb %d type %d\n", __func__,
|
|
result, type);
|
|
return result;
|
|
}
|
|
|
|
/* done */
|
|
return size;
|
|
}
|
|
|
|
/* called by intr_callback when read occurs */
|
|
static int hso_mux_serial_read(struct hso_serial *serial)
|
|
{
|
|
if (!serial)
|
|
return -EINVAL;
|
|
|
|
/* clean data */
|
|
memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
|
|
/* make the request */
|
|
|
|
if (serial->num_rx_urbs != 1) {
|
|
dev_err(&serial->parent->interface->dev,
|
|
"ERROR: mux'd reads with multiple buffers "
|
|
"not possible\n");
|
|
return 0;
|
|
}
|
|
return mux_device_request(serial,
|
|
USB_CDC_GET_ENCAPSULATED_RESPONSE,
|
|
serial->parent->port_spec & HSO_PORT_MASK,
|
|
serial->rx_urb[0],
|
|
&serial->ctrl_req_rx,
|
|
serial->rx_data[0], serial->rx_data_length);
|
|
}
|
|
|
|
/* used for muxed serial port callback (muxed serial read) */
|
|
static void intr_callback(struct urb *urb)
|
|
{
|
|
struct hso_shared_int *shared_int = urb->context;
|
|
struct hso_serial *serial;
|
|
unsigned char *port_req;
|
|
int status = urb->status;
|
|
int i;
|
|
|
|
usb_mark_last_busy(urb->dev);
|
|
|
|
/* sanity check */
|
|
if (!shared_int)
|
|
return;
|
|
|
|
/* status check */
|
|
if (status) {
|
|
handle_usb_error(status, __func__, NULL);
|
|
return;
|
|
}
|
|
D4("\n--- Got intr callback 0x%02X ---", status);
|
|
|
|
/* what request? */
|
|
port_req = urb->transfer_buffer;
|
|
D4(" port_req = 0x%.2X\n", *port_req);
|
|
/* loop over all muxed ports to find the one sending this */
|
|
for (i = 0; i < 8; i++) {
|
|
/* max 8 channels on MUX */
|
|
if (*port_req & (1 << i)) {
|
|
serial = get_serial_by_shared_int_and_type(shared_int,
|
|
(1 << i));
|
|
if (serial != NULL) {
|
|
D1("Pending read interrupt on port %d\n", i);
|
|
spin_lock(&serial->serial_lock);
|
|
if (serial->rx_state == RX_IDLE &&
|
|
serial->open_count > 0) {
|
|
/* Setup and send a ctrl req read on
|
|
* port i */
|
|
if (!serial->rx_urb_filled[0]) {
|
|
serial->rx_state = RX_SENT;
|
|
hso_mux_serial_read(serial);
|
|
} else
|
|
serial->rx_state = RX_PENDING;
|
|
} else {
|
|
D1("Already a read pending on "
|
|
"port %d or port not open\n", i);
|
|
}
|
|
spin_unlock(&serial->serial_lock);
|
|
}
|
|
}
|
|
}
|
|
/* Resubmit interrupt urb */
|
|
hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
|
|
}
|
|
|
|
/* called for writing to muxed serial port */
|
|
static int hso_mux_serial_write_data(struct hso_serial *serial)
|
|
{
|
|
if (NULL == serial)
|
|
return -EINVAL;
|
|
|
|
return mux_device_request(serial,
|
|
USB_CDC_SEND_ENCAPSULATED_COMMAND,
|
|
serial->parent->port_spec & HSO_PORT_MASK,
|
|
serial->tx_urb,
|
|
&serial->ctrl_req_tx,
|
|
serial->tx_data, serial->tx_data_count);
|
|
}
|
|
|
|
/* write callback for Diag and CS port */
|
|
static void hso_std_serial_write_bulk_callback(struct urb *urb)
|
|
{
|
|
struct hso_serial *serial = urb->context;
|
|
int status = urb->status;
|
|
struct tty_struct *tty;
|
|
|
|
/* sanity check */
|
|
if (!serial) {
|
|
D1("serial == NULL");
|
|
return;
|
|
}
|
|
|
|
spin_lock(&serial->serial_lock);
|
|
serial->tx_urb_used = 0;
|
|
tty = tty_kref_get(serial->tty);
|
|
spin_unlock(&serial->serial_lock);
|
|
if (status) {
|
|
handle_usb_error(status, __func__, serial->parent);
|
|
tty_kref_put(tty);
|
|
return;
|
|
}
|
|
hso_put_activity(serial->parent);
|
|
if (tty) {
|
|
tty_wakeup(tty);
|
|
tty_kref_put(tty);
|
|
}
|
|
hso_kick_transmit(serial);
|
|
|
|
D1(" ");
|
|
}
|
|
|
|
/* called for writing diag or CS serial port */
|
|
static int hso_std_serial_write_data(struct hso_serial *serial)
|
|
{
|
|
int count = serial->tx_data_count;
|
|
int result;
|
|
|
|
usb_fill_bulk_urb(serial->tx_urb,
|
|
serial->parent->usb,
|
|
usb_sndbulkpipe(serial->parent->usb,
|
|
serial->out_endp->
|
|
bEndpointAddress & 0x7F),
|
|
serial->tx_data, serial->tx_data_count,
|
|
hso_std_serial_write_bulk_callback, serial);
|
|
|
|
result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_warn(&serial->parent->usb->dev,
|
|
"Failed to submit urb - res %d\n", result);
|
|
return result;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
/* callback after read or write on muxed serial port */
|
|
static void ctrl_callback(struct urb *urb)
|
|
{
|
|
struct hso_serial *serial = urb->context;
|
|
struct usb_ctrlrequest *req;
|
|
int status = urb->status;
|
|
struct tty_struct *tty;
|
|
|
|
/* sanity check */
|
|
if (!serial)
|
|
return;
|
|
|
|
spin_lock(&serial->serial_lock);
|
|
serial->tx_urb_used = 0;
|
|
tty = tty_kref_get(serial->tty);
|
|
spin_unlock(&serial->serial_lock);
|
|
if (status) {
|
|
handle_usb_error(status, __func__, serial->parent);
|
|
tty_kref_put(tty);
|
|
return;
|
|
}
|
|
|
|
/* what request? */
|
|
req = (struct usb_ctrlrequest *)(urb->setup_packet);
|
|
D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
|
|
D4("Actual length of urb = %d\n", urb->actual_length);
|
|
DUMP1(urb->transfer_buffer, urb->actual_length);
|
|
|
|
if (req->bRequestType ==
|
|
(USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
|
|
/* response to a read command */
|
|
serial->rx_urb_filled[0] = 1;
|
|
spin_lock(&serial->serial_lock);
|
|
put_rxbuf_data_and_resubmit_ctrl_urb(serial);
|
|
spin_unlock(&serial->serial_lock);
|
|
} else {
|
|
hso_put_activity(serial->parent);
|
|
if (tty)
|
|
tty_wakeup(tty);
|
|
/* response to a write command */
|
|
hso_kick_transmit(serial);
|
|
}
|
|
tty_kref_put(tty);
|
|
}
|
|
|
|
/* handle RX data for serial port */
|
|
static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
|
|
{
|
|
struct tty_struct *tty;
|
|
int write_length_remaining = 0;
|
|
int curr_write_len;
|
|
|
|
/* Sanity check */
|
|
if (urb == NULL || serial == NULL) {
|
|
D1("serial = NULL");
|
|
return -2;
|
|
}
|
|
|
|
/* All callers to put_rxbuf_data hold serial_lock */
|
|
tty = tty_kref_get(serial->tty);
|
|
|
|
/* Push data to tty */
|
|
if (tty) {
|
|
write_length_remaining = urb->actual_length -
|
|
serial->curr_rx_urb_offset;
|
|
D1("data to push to tty");
|
|
while (write_length_remaining) {
|
|
if (test_bit(TTY_THROTTLED, &tty->flags)) {
|
|
tty_kref_put(tty);
|
|
return -1;
|
|
}
|
|
curr_write_len = tty_insert_flip_string
|
|
(tty, urb->transfer_buffer +
|
|
serial->curr_rx_urb_offset,
|
|
write_length_remaining);
|
|
serial->curr_rx_urb_offset += curr_write_len;
|
|
write_length_remaining -= curr_write_len;
|
|
tty_flip_buffer_push(tty);
|
|
}
|
|
}
|
|
if (write_length_remaining == 0) {
|
|
serial->curr_rx_urb_offset = 0;
|
|
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
|
|
}
|
|
tty_kref_put(tty);
|
|
return write_length_remaining;
|
|
}
|
|
|
|
|
|
/* Base driver functions */
|
|
|
|
static void hso_log_port(struct hso_device *hso_dev)
|
|
{
|
|
char *port_type;
|
|
char port_dev[20];
|
|
|
|
switch (hso_dev->port_spec & HSO_PORT_MASK) {
|
|
case HSO_PORT_CONTROL:
|
|
port_type = "Control";
|
|
break;
|
|
case HSO_PORT_APP:
|
|
port_type = "Application";
|
|
break;
|
|
case HSO_PORT_GPS:
|
|
port_type = "GPS";
|
|
break;
|
|
case HSO_PORT_GPS_CONTROL:
|
|
port_type = "GPS control";
|
|
break;
|
|
case HSO_PORT_APP2:
|
|
port_type = "Application2";
|
|
break;
|
|
case HSO_PORT_PCSC:
|
|
port_type = "PCSC";
|
|
break;
|
|
case HSO_PORT_DIAG:
|
|
port_type = "Diagnostic";
|
|
break;
|
|
case HSO_PORT_DIAG2:
|
|
port_type = "Diagnostic2";
|
|
break;
|
|
case HSO_PORT_MODEM:
|
|
port_type = "Modem";
|
|
break;
|
|
case HSO_PORT_NETWORK:
|
|
port_type = "Network";
|
|
break;
|
|
default:
|
|
port_type = "Unknown";
|
|
break;
|
|
}
|
|
if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
|
|
sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
|
|
} else
|
|
sprintf(port_dev, "/dev/%s%d", tty_filename,
|
|
dev2ser(hso_dev)->minor);
|
|
|
|
dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
|
|
port_type, port_dev);
|
|
}
|
|
|
|
static int hso_start_net_device(struct hso_device *hso_dev)
|
|
{
|
|
int i, result = 0;
|
|
struct hso_net *hso_net = dev2net(hso_dev);
|
|
|
|
if (!hso_net)
|
|
return -ENODEV;
|
|
|
|
/* send URBs for all read buffers */
|
|
for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
|
|
|
|
/* Prep a receive URB */
|
|
usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
|
|
hso_dev->usb,
|
|
usb_rcvbulkpipe(hso_dev->usb,
|
|
hso_net->in_endp->
|
|
bEndpointAddress & 0x7F),
|
|
hso_net->mux_bulk_rx_buf_pool[i],
|
|
MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
|
|
hso_net);
|
|
|
|
/* Put it out there so the device can send us stuff */
|
|
result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
|
|
GFP_NOIO);
|
|
if (result)
|
|
dev_warn(&hso_dev->usb->dev,
|
|
"%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
|
|
i, result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int hso_stop_net_device(struct hso_device *hso_dev)
|
|
{
|
|
int i;
|
|
struct hso_net *hso_net = dev2net(hso_dev);
|
|
|
|
if (!hso_net)
|
|
return -ENODEV;
|
|
|
|
for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
|
|
if (hso_net->mux_bulk_rx_urb_pool[i])
|
|
usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
|
|
|
|
}
|
|
if (hso_net->mux_bulk_tx_urb)
|
|
usb_kill_urb(hso_net->mux_bulk_tx_urb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
|
|
{
|
|
int i, result = 0;
|
|
struct hso_serial *serial = dev2ser(hso_dev);
|
|
|
|
if (!serial)
|
|
return -ENODEV;
|
|
|
|
/* If it is not the MUX port fill in and submit a bulk urb (already
|
|
* allocated in hso_serial_start) */
|
|
if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
|
|
for (i = 0; i < serial->num_rx_urbs; i++) {
|
|
usb_fill_bulk_urb(serial->rx_urb[i],
|
|
serial->parent->usb,
|
|
usb_rcvbulkpipe(serial->parent->usb,
|
|
serial->in_endp->
|
|
bEndpointAddress &
|
|
0x7F),
|
|
serial->rx_data[i],
|
|
serial->rx_data_length,
|
|
hso_std_serial_read_bulk_callback,
|
|
serial);
|
|
result = usb_submit_urb(serial->rx_urb[i], flags);
|
|
if (result) {
|
|
dev_warn(&serial->parent->usb->dev,
|
|
"Failed to submit urb - res %d\n",
|
|
result);
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
mutex_lock(&serial->shared_int->shared_int_lock);
|
|
if (!serial->shared_int->use_count) {
|
|
result =
|
|
hso_mux_submit_intr_urb(serial->shared_int,
|
|
hso_dev->usb, flags);
|
|
}
|
|
serial->shared_int->use_count++;
|
|
mutex_unlock(&serial->shared_int->shared_int_lock);
|
|
}
|
|
if (serial->tiocmget)
|
|
tiocmget_submit_urb(serial,
|
|
serial->tiocmget,
|
|
serial->parent->usb);
|
|
return result;
|
|
}
|
|
|
|
static int hso_stop_serial_device(struct hso_device *hso_dev)
|
|
{
|
|
int i;
|
|
struct hso_serial *serial = dev2ser(hso_dev);
|
|
struct hso_tiocmget *tiocmget;
|
|
|
|
if (!serial)
|
|
return -ENODEV;
|
|
|
|
for (i = 0; i < serial->num_rx_urbs; i++) {
|
|
if (serial->rx_urb[i]) {
|
|
usb_kill_urb(serial->rx_urb[i]);
|
|
serial->rx_urb_filled[i] = 0;
|
|
}
|
|
}
|
|
serial->curr_rx_urb_idx = 0;
|
|
serial->curr_rx_urb_offset = 0;
|
|
|
|
if (serial->tx_urb)
|
|
usb_kill_urb(serial->tx_urb);
|
|
|
|
if (serial->shared_int) {
|
|
mutex_lock(&serial->shared_int->shared_int_lock);
|
|
if (serial->shared_int->use_count &&
|
|
(--serial->shared_int->use_count == 0)) {
|
|
struct urb *urb;
|
|
|
|
urb = serial->shared_int->shared_intr_urb;
|
|
if (urb)
|
|
usb_kill_urb(urb);
|
|
}
|
|
mutex_unlock(&serial->shared_int->shared_int_lock);
|
|
}
|
|
tiocmget = serial->tiocmget;
|
|
if (tiocmget) {
|
|
wake_up_interruptible(&tiocmget->waitq);
|
|
usb_kill_urb(tiocmget->urb);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void hso_serial_common_free(struct hso_serial *serial)
|
|
{
|
|
int i;
|
|
|
|
if (serial->parent->dev)
|
|
device_remove_file(serial->parent->dev, &dev_attr_hsotype);
|
|
|
|
tty_unregister_device(tty_drv, serial->minor);
|
|
|
|
for (i = 0; i < serial->num_rx_urbs; i++) {
|
|
/* unlink and free RX URB */
|
|
usb_free_urb(serial->rx_urb[i]);
|
|
/* free the RX buffer */
|
|
kfree(serial->rx_data[i]);
|
|
}
|
|
|
|
/* unlink and free TX URB */
|
|
usb_free_urb(serial->tx_urb);
|
|
kfree(serial->tx_data);
|
|
}
|
|
|
|
static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
|
|
int rx_size, int tx_size)
|
|
{
|
|
struct device *dev;
|
|
int minor;
|
|
int i;
|
|
|
|
minor = get_free_serial_index();
|
|
if (minor < 0)
|
|
goto exit;
|
|
|
|
/* register our minor number */
|
|
serial->parent->dev = tty_register_device(tty_drv, minor,
|
|
&serial->parent->interface->dev);
|
|
dev = serial->parent->dev;
|
|
dev_set_drvdata(dev, serial->parent);
|
|
i = device_create_file(dev, &dev_attr_hsotype);
|
|
|
|
/* fill in specific data for later use */
|
|
serial->minor = minor;
|
|
serial->magic = HSO_SERIAL_MAGIC;
|
|
spin_lock_init(&serial->serial_lock);
|
|
serial->num_rx_urbs = num_urbs;
|
|
|
|
/* RX, allocate urb and initialize */
|
|
|
|
/* prepare our RX buffer */
|
|
serial->rx_data_length = rx_size;
|
|
for (i = 0; i < serial->num_rx_urbs; i++) {
|
|
serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!serial->rx_urb[i]) {
|
|
dev_err(dev, "Could not allocate urb?\n");
|
|
goto exit;
|
|
}
|
|
serial->rx_urb[i]->transfer_buffer = NULL;
|
|
serial->rx_urb[i]->transfer_buffer_length = 0;
|
|
serial->rx_data[i] = kzalloc(serial->rx_data_length,
|
|
GFP_KERNEL);
|
|
if (!serial->rx_data[i]) {
|
|
dev_err(dev, "%s - Out of memory\n", __func__);
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
/* TX, allocate urb and initialize */
|
|
serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!serial->tx_urb) {
|
|
dev_err(dev, "Could not allocate urb?\n");
|
|
goto exit;
|
|
}
|
|
serial->tx_urb->transfer_buffer = NULL;
|
|
serial->tx_urb->transfer_buffer_length = 0;
|
|
/* prepare our TX buffer */
|
|
serial->tx_data_count = 0;
|
|
serial->tx_buffer_count = 0;
|
|
serial->tx_data_length = tx_size;
|
|
serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
|
|
if (!serial->tx_data) {
|
|
dev_err(dev, "%s - Out of memory\n", __func__);
|
|
goto exit;
|
|
}
|
|
serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
|
|
if (!serial->tx_buffer) {
|
|
dev_err(dev, "%s - Out of memory\n", __func__);
|
|
goto exit;
|
|
}
|
|
|
|
return 0;
|
|
exit:
|
|
hso_serial_common_free(serial);
|
|
return -1;
|
|
}
|
|
|
|
/* Creates a general hso device */
|
|
static struct hso_device *hso_create_device(struct usb_interface *intf,
|
|
int port_spec)
|
|
{
|
|
struct hso_device *hso_dev;
|
|
|
|
hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
|
|
if (!hso_dev)
|
|
return NULL;
|
|
|
|
hso_dev->port_spec = port_spec;
|
|
hso_dev->usb = interface_to_usbdev(intf);
|
|
hso_dev->interface = intf;
|
|
kref_init(&hso_dev->ref);
|
|
mutex_init(&hso_dev->mutex);
|
|
|
|
INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
|
|
INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
|
|
INIT_WORK(&hso_dev->reset_device, reset_device);
|
|
|
|
return hso_dev;
|
|
}
|
|
|
|
/* Removes a network device in the network device table */
|
|
static int remove_net_device(struct hso_device *hso_dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
|
|
if (network_table[i] == hso_dev) {
|
|
network_table[i] = NULL;
|
|
break;
|
|
}
|
|
}
|
|
if (i == HSO_MAX_NET_DEVICES)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
/* Frees our network device */
|
|
static void hso_free_net_device(struct hso_device *hso_dev)
|
|
{
|
|
int i;
|
|
struct hso_net *hso_net = dev2net(hso_dev);
|
|
|
|
if (!hso_net)
|
|
return;
|
|
|
|
remove_net_device(hso_net->parent);
|
|
|
|
if (hso_net->net) {
|
|
unregister_netdev(hso_net->net);
|
|
free_netdev(hso_net->net);
|
|
}
|
|
|
|
/* start freeing */
|
|
for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
|
|
usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
|
|
kfree(hso_net->mux_bulk_rx_buf_pool[i]);
|
|
hso_net->mux_bulk_rx_buf_pool[i] = NULL;
|
|
}
|
|
usb_free_urb(hso_net->mux_bulk_tx_urb);
|
|
kfree(hso_net->mux_bulk_tx_buf);
|
|
hso_net->mux_bulk_tx_buf = NULL;
|
|
|
|
kfree(hso_dev);
|
|
}
|
|
|
|
static const struct net_device_ops hso_netdev_ops = {
|
|
.ndo_open = hso_net_open,
|
|
.ndo_stop = hso_net_close,
|
|
.ndo_start_xmit = hso_net_start_xmit,
|
|
.ndo_tx_timeout = hso_net_tx_timeout,
|
|
};
|
|
|
|
/* initialize the network interface */
|
|
static void hso_net_init(struct net_device *net)
|
|
{
|
|
struct hso_net *hso_net = netdev_priv(net);
|
|
|
|
D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
|
|
|
|
/* fill in the other fields */
|
|
net->netdev_ops = &hso_netdev_ops;
|
|
net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
|
|
net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
|
|
net->type = ARPHRD_NONE;
|
|
net->mtu = DEFAULT_MTU - 14;
|
|
net->tx_queue_len = 10;
|
|
SET_ETHTOOL_OPS(net, &ops);
|
|
|
|
/* and initialize the semaphore */
|
|
spin_lock_init(&hso_net->net_lock);
|
|
}
|
|
|
|
/* Adds a network device in the network device table */
|
|
static int add_net_device(struct hso_device *hso_dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
|
|
if (network_table[i] == NULL) {
|
|
network_table[i] = hso_dev;
|
|
break;
|
|
}
|
|
}
|
|
if (i == HSO_MAX_NET_DEVICES)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int hso_rfkill_set_block(void *data, bool blocked)
|
|
{
|
|
struct hso_device *hso_dev = data;
|
|
int enabled = !blocked;
|
|
int rv;
|
|
|
|
mutex_lock(&hso_dev->mutex);
|
|
if (hso_dev->usb_gone)
|
|
rv = 0;
|
|
else
|
|
rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
|
|
enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
|
|
USB_CTRL_SET_TIMEOUT);
|
|
mutex_unlock(&hso_dev->mutex);
|
|
return rv;
|
|
}
|
|
|
|
static const struct rfkill_ops hso_rfkill_ops = {
|
|
.set_block = hso_rfkill_set_block,
|
|
};
|
|
|
|
/* Creates and sets up everything for rfkill */
|
|
static void hso_create_rfkill(struct hso_device *hso_dev,
|
|
struct usb_interface *interface)
|
|
{
|
|
struct hso_net *hso_net = dev2net(hso_dev);
|
|
struct device *dev = &hso_net->net->dev;
|
|
char *rfkn;
|
|
|
|
rfkn = kzalloc(20, GFP_KERNEL);
|
|
if (!rfkn)
|
|
dev_err(dev, "%s - Out of memory\n", __func__);
|
|
|
|
snprintf(rfkn, 20, "hso-%d",
|
|
interface->altsetting->desc.bInterfaceNumber);
|
|
|
|
hso_net->rfkill = rfkill_alloc(rfkn,
|
|
&interface_to_usbdev(interface)->dev,
|
|
RFKILL_TYPE_WWAN,
|
|
&hso_rfkill_ops, hso_dev);
|
|
if (!hso_net->rfkill) {
|
|
dev_err(dev, "%s - Out of memory\n", __func__);
|
|
kfree(rfkn);
|
|
return;
|
|
}
|
|
if (rfkill_register(hso_net->rfkill) < 0) {
|
|
rfkill_destroy(hso_net->rfkill);
|
|
kfree(rfkn);
|
|
hso_net->rfkill = NULL;
|
|
dev_err(dev, "%s - Failed to register rfkill\n", __func__);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static struct device_type hso_type = {
|
|
.name = "wwan",
|
|
};
|
|
|
|
/* Creates our network device */
|
|
static struct hso_device *hso_create_net_device(struct usb_interface *interface,
|
|
int port_spec)
|
|
{
|
|
int result, i;
|
|
struct net_device *net;
|
|
struct hso_net *hso_net;
|
|
struct hso_device *hso_dev;
|
|
|
|
hso_dev = hso_create_device(interface, port_spec);
|
|
if (!hso_dev)
|
|
return NULL;
|
|
|
|
/* allocate our network device, then we can put in our private data */
|
|
/* call hso_net_init to do the basic initialization */
|
|
net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
|
|
if (!net) {
|
|
dev_err(&interface->dev, "Unable to create ethernet device\n");
|
|
goto exit;
|
|
}
|
|
|
|
hso_net = netdev_priv(net);
|
|
|
|
hso_dev->port_data.dev_net = hso_net;
|
|
hso_net->net = net;
|
|
hso_net->parent = hso_dev;
|
|
|
|
hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
|
|
USB_DIR_IN);
|
|
if (!hso_net->in_endp) {
|
|
dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
|
|
goto exit;
|
|
}
|
|
hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
|
|
USB_DIR_OUT);
|
|
if (!hso_net->out_endp) {
|
|
dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
|
|
goto exit;
|
|
}
|
|
SET_NETDEV_DEV(net, &interface->dev);
|
|
SET_NETDEV_DEVTYPE(net, &hso_type);
|
|
|
|
/* registering our net device */
|
|
result = register_netdev(net);
|
|
if (result) {
|
|
dev_err(&interface->dev, "Failed to register device\n");
|
|
goto exit;
|
|
}
|
|
|
|
/* start allocating */
|
|
for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
|
|
hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!hso_net->mux_bulk_rx_urb_pool[i]) {
|
|
dev_err(&interface->dev, "Could not allocate rx urb\n");
|
|
goto exit;
|
|
}
|
|
hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
|
|
GFP_KERNEL);
|
|
if (!hso_net->mux_bulk_rx_buf_pool[i]) {
|
|
dev_err(&interface->dev, "Could not allocate rx buf\n");
|
|
goto exit;
|
|
}
|
|
}
|
|
hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!hso_net->mux_bulk_tx_urb) {
|
|
dev_err(&interface->dev, "Could not allocate tx urb\n");
|
|
goto exit;
|
|
}
|
|
hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
|
|
if (!hso_net->mux_bulk_tx_buf) {
|
|
dev_err(&interface->dev, "Could not allocate tx buf\n");
|
|
goto exit;
|
|
}
|
|
|
|
add_net_device(hso_dev);
|
|
|
|
hso_log_port(hso_dev);
|
|
|
|
hso_create_rfkill(hso_dev, interface);
|
|
|
|
return hso_dev;
|
|
exit:
|
|
hso_free_net_device(hso_dev);
|
|
return NULL;
|
|
}
|
|
|
|
static void hso_free_tiomget(struct hso_serial *serial)
|
|
{
|
|
struct hso_tiocmget *tiocmget = serial->tiocmget;
|
|
if (tiocmget) {
|
|
if (tiocmget->urb) {
|
|
usb_free_urb(tiocmget->urb);
|
|
tiocmget->urb = NULL;
|
|
}
|
|
serial->tiocmget = NULL;
|
|
kfree(tiocmget);
|
|
|
|
}
|
|
}
|
|
|
|
/* Frees an AT channel ( goes for both mux and non-mux ) */
|
|
static void hso_free_serial_device(struct hso_device *hso_dev)
|
|
{
|
|
struct hso_serial *serial = dev2ser(hso_dev);
|
|
|
|
if (!serial)
|
|
return;
|
|
set_serial_by_index(serial->minor, NULL);
|
|
|
|
hso_serial_common_free(serial);
|
|
|
|
if (serial->shared_int) {
|
|
mutex_lock(&serial->shared_int->shared_int_lock);
|
|
if (--serial->shared_int->ref_count == 0)
|
|
hso_free_shared_int(serial->shared_int);
|
|
else
|
|
mutex_unlock(&serial->shared_int->shared_int_lock);
|
|
}
|
|
hso_free_tiomget(serial);
|
|
kfree(serial);
|
|
kfree(hso_dev);
|
|
}
|
|
|
|
/* Creates a bulk AT channel */
|
|
static struct hso_device *hso_create_bulk_serial_device(
|
|
struct usb_interface *interface, int port)
|
|
{
|
|
struct hso_device *hso_dev;
|
|
struct hso_serial *serial;
|
|
int num_urbs;
|
|
struct hso_tiocmget *tiocmget;
|
|
|
|
hso_dev = hso_create_device(interface, port);
|
|
if (!hso_dev)
|
|
return NULL;
|
|
|
|
serial = kzalloc(sizeof(*serial), GFP_KERNEL);
|
|
if (!serial)
|
|
goto exit;
|
|
|
|
serial->parent = hso_dev;
|
|
hso_dev->port_data.dev_serial = serial;
|
|
|
|
if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
|
|
num_urbs = 2;
|
|
serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
|
|
GFP_KERNEL);
|
|
/* it isn't going to break our heart if serial->tiocmget
|
|
* allocation fails don't bother checking this.
|
|
*/
|
|
if (serial->tiocmget) {
|
|
tiocmget = serial->tiocmget;
|
|
tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (tiocmget->urb) {
|
|
mutex_init(&tiocmget->mutex);
|
|
init_waitqueue_head(&tiocmget->waitq);
|
|
tiocmget->endp = hso_get_ep(
|
|
interface,
|
|
USB_ENDPOINT_XFER_INT,
|
|
USB_DIR_IN);
|
|
} else
|
|
hso_free_tiomget(serial);
|
|
}
|
|
}
|
|
else
|
|
num_urbs = 1;
|
|
|
|
if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
|
|
BULK_URB_TX_SIZE))
|
|
goto exit;
|
|
|
|
serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
|
|
USB_DIR_IN);
|
|
if (!serial->in_endp) {
|
|
dev_err(&interface->dev, "Failed to find BULK IN ep\n");
|
|
goto exit2;
|
|
}
|
|
|
|
if (!
|
|
(serial->out_endp =
|
|
hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
|
|
dev_err(&interface->dev, "Failed to find BULK IN ep\n");
|
|
goto exit2;
|
|
}
|
|
|
|
serial->write_data = hso_std_serial_write_data;
|
|
|
|
/* and record this serial */
|
|
set_serial_by_index(serial->minor, serial);
|
|
|
|
/* setup the proc dirs and files if needed */
|
|
hso_log_port(hso_dev);
|
|
|
|
/* done, return it */
|
|
return hso_dev;
|
|
|
|
exit2:
|
|
hso_serial_common_free(serial);
|
|
exit:
|
|
hso_free_tiomget(serial);
|
|
kfree(serial);
|
|
kfree(hso_dev);
|
|
return NULL;
|
|
}
|
|
|
|
/* Creates a multiplexed AT channel */
|
|
static
|
|
struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
|
|
int port,
|
|
struct hso_shared_int *mux)
|
|
{
|
|
struct hso_device *hso_dev;
|
|
struct hso_serial *serial;
|
|
int port_spec;
|
|
|
|
port_spec = HSO_INTF_MUX;
|
|
port_spec &= ~HSO_PORT_MASK;
|
|
|
|
port_spec |= hso_mux_to_port(port);
|
|
if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
|
|
return NULL;
|
|
|
|
hso_dev = hso_create_device(interface, port_spec);
|
|
if (!hso_dev)
|
|
return NULL;
|
|
|
|
serial = kzalloc(sizeof(*serial), GFP_KERNEL);
|
|
if (!serial)
|
|
goto exit;
|
|
|
|
hso_dev->port_data.dev_serial = serial;
|
|
serial->parent = hso_dev;
|
|
|
|
if (hso_serial_common_create
|
|
(serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
|
|
goto exit;
|
|
|
|
serial->tx_data_length--;
|
|
serial->write_data = hso_mux_serial_write_data;
|
|
|
|
serial->shared_int = mux;
|
|
mutex_lock(&serial->shared_int->shared_int_lock);
|
|
serial->shared_int->ref_count++;
|
|
mutex_unlock(&serial->shared_int->shared_int_lock);
|
|
|
|
/* and record this serial */
|
|
set_serial_by_index(serial->minor, serial);
|
|
|
|
/* setup the proc dirs and files if needed */
|
|
hso_log_port(hso_dev);
|
|
|
|
/* done, return it */
|
|
return hso_dev;
|
|
|
|
exit:
|
|
if (serial) {
|
|
tty_unregister_device(tty_drv, serial->minor);
|
|
kfree(serial);
|
|
}
|
|
if (hso_dev)
|
|
kfree(hso_dev);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
static void hso_free_shared_int(struct hso_shared_int *mux)
|
|
{
|
|
usb_free_urb(mux->shared_intr_urb);
|
|
kfree(mux->shared_intr_buf);
|
|
mutex_unlock(&mux->shared_int_lock);
|
|
kfree(mux);
|
|
}
|
|
|
|
static
|
|
struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
|
|
{
|
|
struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
|
|
|
|
if (!mux)
|
|
return NULL;
|
|
|
|
mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
|
|
USB_DIR_IN);
|
|
if (!mux->intr_endp) {
|
|
dev_err(&interface->dev, "Can't find INT IN endpoint\n");
|
|
goto exit;
|
|
}
|
|
|
|
mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!mux->shared_intr_urb) {
|
|
dev_err(&interface->dev, "Could not allocate intr urb?\n");
|
|
goto exit;
|
|
}
|
|
mux->shared_intr_buf =
|
|
kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
|
|
GFP_KERNEL);
|
|
if (!mux->shared_intr_buf) {
|
|
dev_err(&interface->dev, "Could not allocate intr buf?\n");
|
|
goto exit;
|
|
}
|
|
|
|
mutex_init(&mux->shared_int_lock);
|
|
|
|
return mux;
|
|
|
|
exit:
|
|
kfree(mux->shared_intr_buf);
|
|
usb_free_urb(mux->shared_intr_urb);
|
|
kfree(mux);
|
|
return NULL;
|
|
}
|
|
|
|
/* Gets the port spec for a certain interface */
|
|
static int hso_get_config_data(struct usb_interface *interface)
|
|
{
|
|
struct usb_device *usbdev = interface_to_usbdev(interface);
|
|
u8 config_data[17];
|
|
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
|
|
s32 result;
|
|
|
|
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
|
|
0x86, 0xC0, 0, 0, config_data, 17,
|
|
USB_CTRL_SET_TIMEOUT) != 0x11) {
|
|
return -EIO;
|
|
}
|
|
|
|
switch (config_data[if_num]) {
|
|
case 0x0:
|
|
result = 0;
|
|
break;
|
|
case 0x1:
|
|
result = HSO_PORT_DIAG;
|
|
break;
|
|
case 0x2:
|
|
result = HSO_PORT_GPS;
|
|
break;
|
|
case 0x3:
|
|
result = HSO_PORT_GPS_CONTROL;
|
|
break;
|
|
case 0x4:
|
|
result = HSO_PORT_APP;
|
|
break;
|
|
case 0x5:
|
|
result = HSO_PORT_APP2;
|
|
break;
|
|
case 0x6:
|
|
result = HSO_PORT_CONTROL;
|
|
break;
|
|
case 0x7:
|
|
result = HSO_PORT_NETWORK;
|
|
break;
|
|
case 0x8:
|
|
result = HSO_PORT_MODEM;
|
|
break;
|
|
case 0x9:
|
|
result = HSO_PORT_MSD;
|
|
break;
|
|
case 0xa:
|
|
result = HSO_PORT_PCSC;
|
|
break;
|
|
case 0xb:
|
|
result = HSO_PORT_VOICE;
|
|
break;
|
|
default:
|
|
result = 0;
|
|
}
|
|
|
|
if (result)
|
|
result |= HSO_INTF_BULK;
|
|
|
|
if (config_data[16] & 0x1)
|
|
result |= HSO_INFO_CRC_BUG;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* called once for each interface upon device insertion */
|
|
static int hso_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
int mux, i, if_num, port_spec;
|
|
unsigned char port_mask;
|
|
struct hso_device *hso_dev = NULL;
|
|
struct hso_shared_int *shared_int;
|
|
struct hso_device *tmp_dev = NULL;
|
|
|
|
if_num = interface->altsetting->desc.bInterfaceNumber;
|
|
|
|
/* Get the interface/port specification from either driver_info or from
|
|
* the device itself */
|
|
if (id->driver_info)
|
|
port_spec = ((u32 *)(id->driver_info))[if_num];
|
|
else
|
|
port_spec = hso_get_config_data(interface);
|
|
|
|
if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
|
dev_err(&interface->dev, "Not our interface\n");
|
|
return -ENODEV;
|
|
}
|
|
/* Check if we need to switch to alt interfaces prior to port
|
|
* configuration */
|
|
if (interface->num_altsetting > 1)
|
|
usb_set_interface(interface_to_usbdev(interface), if_num, 1);
|
|
interface->needs_remote_wakeup = 1;
|
|
|
|
/* Allocate new hso device(s) */
|
|
switch (port_spec & HSO_INTF_MASK) {
|
|
case HSO_INTF_MUX:
|
|
if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
|
|
/* Create the network device */
|
|
if (!disable_net) {
|
|
hso_dev = hso_create_net_device(interface,
|
|
port_spec);
|
|
if (!hso_dev)
|
|
goto exit;
|
|
tmp_dev = hso_dev;
|
|
}
|
|
}
|
|
|
|
if (hso_get_mux_ports(interface, &port_mask))
|
|
/* TODO: de-allocate everything */
|
|
goto exit;
|
|
|
|
shared_int = hso_create_shared_int(interface);
|
|
if (!shared_int)
|
|
goto exit;
|
|
|
|
for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
|
|
if (port_mask & i) {
|
|
hso_dev = hso_create_mux_serial_device(
|
|
interface, i, shared_int);
|
|
if (!hso_dev)
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
if (tmp_dev)
|
|
hso_dev = tmp_dev;
|
|
break;
|
|
|
|
case HSO_INTF_BULK:
|
|
/* It's a regular bulk interface */
|
|
if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
|
|
!disable_net)
|
|
hso_dev = hso_create_net_device(interface, port_spec);
|
|
else
|
|
hso_dev =
|
|
hso_create_bulk_serial_device(interface, port_spec);
|
|
if (!hso_dev)
|
|
goto exit;
|
|
break;
|
|
default:
|
|
goto exit;
|
|
}
|
|
|
|
/* save our data pointer in this device */
|
|
usb_set_intfdata(interface, hso_dev);
|
|
|
|
/* done */
|
|
return 0;
|
|
exit:
|
|
hso_free_interface(interface);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* device removed, cleaning up */
|
|
static void hso_disconnect(struct usb_interface *interface)
|
|
{
|
|
hso_free_interface(interface);
|
|
|
|
/* remove reference of our private data */
|
|
usb_set_intfdata(interface, NULL);
|
|
}
|
|
|
|
static void async_get_intf(struct work_struct *data)
|
|
{
|
|
struct hso_device *hso_dev =
|
|
container_of(data, struct hso_device, async_get_intf);
|
|
usb_autopm_get_interface(hso_dev->interface);
|
|
}
|
|
|
|
static void async_put_intf(struct work_struct *data)
|
|
{
|
|
struct hso_device *hso_dev =
|
|
container_of(data, struct hso_device, async_put_intf);
|
|
usb_autopm_put_interface(hso_dev->interface);
|
|
}
|
|
|
|
static int hso_get_activity(struct hso_device *hso_dev)
|
|
{
|
|
if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
|
|
if (!hso_dev->is_active) {
|
|
hso_dev->is_active = 1;
|
|
schedule_work(&hso_dev->async_get_intf);
|
|
}
|
|
}
|
|
|
|
if (hso_dev->usb->state != USB_STATE_CONFIGURED)
|
|
return -EAGAIN;
|
|
|
|
usb_mark_last_busy(hso_dev->usb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hso_put_activity(struct hso_device *hso_dev)
|
|
{
|
|
if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
|
|
if (hso_dev->is_active) {
|
|
hso_dev->is_active = 0;
|
|
schedule_work(&hso_dev->async_put_intf);
|
|
return -EAGAIN;
|
|
}
|
|
}
|
|
hso_dev->is_active = 0;
|
|
return 0;
|
|
}
|
|
|
|
/* called by kernel when we need to suspend device */
|
|
static int hso_suspend(struct usb_interface *iface, pm_message_t message)
|
|
{
|
|
int i, result;
|
|
|
|
/* Stop all serial ports */
|
|
for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
|
|
if (serial_table[i] && (serial_table[i]->interface == iface)) {
|
|
result = hso_stop_serial_device(serial_table[i]);
|
|
if (result)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* Stop all network ports */
|
|
for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
|
|
if (network_table[i] &&
|
|
(network_table[i]->interface == iface)) {
|
|
result = hso_stop_net_device(network_table[i]);
|
|
if (result)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
/* called by kernel when we need to resume device */
|
|
static int hso_resume(struct usb_interface *iface)
|
|
{
|
|
int i, result = 0;
|
|
struct hso_net *hso_net;
|
|
|
|
/* Start all serial ports */
|
|
for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
|
|
if (serial_table[i] && (serial_table[i]->interface == iface)) {
|
|
if (dev2ser(serial_table[i])->open_count) {
|
|
result =
|
|
hso_start_serial_device(serial_table[i], GFP_NOIO);
|
|
hso_kick_transmit(dev2ser(serial_table[i]));
|
|
if (result)
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Start all network ports */
|
|
for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
|
|
if (network_table[i] &&
|
|
(network_table[i]->interface == iface)) {
|
|
hso_net = dev2net(network_table[i]);
|
|
if (hso_net->flags & IFF_UP) {
|
|
/* First transmit any lingering data,
|
|
then restart the device. */
|
|
if (hso_net->skb_tx_buf) {
|
|
dev_dbg(&iface->dev,
|
|
"Transmitting"
|
|
" lingering data\n");
|
|
hso_net_start_xmit(hso_net->skb_tx_buf,
|
|
hso_net->net);
|
|
hso_net->skb_tx_buf = NULL;
|
|
}
|
|
result = hso_start_net_device(network_table[i]);
|
|
if (result)
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static void reset_device(struct work_struct *data)
|
|
{
|
|
struct hso_device *hso_dev =
|
|
container_of(data, struct hso_device, reset_device);
|
|
struct usb_device *usb = hso_dev->usb;
|
|
int result;
|
|
|
|
if (hso_dev->usb_gone) {
|
|
D1("No reset during disconnect\n");
|
|
} else {
|
|
result = usb_lock_device_for_reset(usb, hso_dev->interface);
|
|
if (result < 0)
|
|
D1("unable to lock device for reset: %d\n", result);
|
|
else {
|
|
usb_reset_device(usb);
|
|
usb_unlock_device(usb);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hso_serial_ref_free(struct kref *ref)
|
|
{
|
|
struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
|
|
|
|
hso_free_serial_device(hso_dev);
|
|
}
|
|
|
|
static void hso_free_interface(struct usb_interface *interface)
|
|
{
|
|
struct hso_serial *hso_dev;
|
|
struct tty_struct *tty;
|
|
int i;
|
|
|
|
for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
|
|
if (serial_table[i] &&
|
|
(serial_table[i]->interface == interface)) {
|
|
hso_dev = dev2ser(serial_table[i]);
|
|
spin_lock_irq(&hso_dev->serial_lock);
|
|
tty = tty_kref_get(hso_dev->tty);
|
|
spin_unlock_irq(&hso_dev->serial_lock);
|
|
if (tty)
|
|
tty_hangup(tty);
|
|
mutex_lock(&hso_dev->parent->mutex);
|
|
tty_kref_put(tty);
|
|
hso_dev->parent->usb_gone = 1;
|
|
mutex_unlock(&hso_dev->parent->mutex);
|
|
kref_put(&serial_table[i]->ref, hso_serial_ref_free);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
|
|
if (network_table[i] &&
|
|
(network_table[i]->interface == interface)) {
|
|
struct rfkill *rfk = dev2net(network_table[i])->rfkill;
|
|
/* hso_stop_net_device doesn't stop the net queue since
|
|
* traffic needs to start it again when suspended */
|
|
netif_stop_queue(dev2net(network_table[i])->net);
|
|
hso_stop_net_device(network_table[i]);
|
|
cancel_work_sync(&network_table[i]->async_put_intf);
|
|
cancel_work_sync(&network_table[i]->async_get_intf);
|
|
if (rfk) {
|
|
rfkill_unregister(rfk);
|
|
rfkill_destroy(rfk);
|
|
}
|
|
hso_free_net_device(network_table[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Helper functions */
|
|
|
|
/* Get the endpoint ! */
|
|
static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
|
|
int type, int dir)
|
|
{
|
|
int i;
|
|
struct usb_host_interface *iface = intf->cur_altsetting;
|
|
struct usb_endpoint_descriptor *endp;
|
|
|
|
for (i = 0; i < iface->desc.bNumEndpoints; i++) {
|
|
endp = &iface->endpoint[i].desc;
|
|
if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
|
|
(usb_endpoint_type(endp) == type))
|
|
return endp;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Get the byte that describes which ports are enabled */
|
|
static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
|
|
{
|
|
int i;
|
|
struct usb_host_interface *iface = intf->cur_altsetting;
|
|
|
|
if (iface->extralen == 3) {
|
|
*ports = iface->extra[2];
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < iface->desc.bNumEndpoints; i++) {
|
|
if (iface->endpoint[i].extralen == 3) {
|
|
*ports = iface->endpoint[i].extra[2];
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* interrupt urb needs to be submitted, used for serial read of muxed port */
|
|
static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
|
|
struct usb_device *usb, gfp_t gfp)
|
|
{
|
|
int result;
|
|
|
|
usb_fill_int_urb(shared_int->shared_intr_urb, usb,
|
|
usb_rcvintpipe(usb,
|
|
shared_int->intr_endp->bEndpointAddress & 0x7F),
|
|
shared_int->shared_intr_buf,
|
|
1,
|
|
intr_callback, shared_int,
|
|
shared_int->intr_endp->bInterval);
|
|
|
|
result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
|
|
if (result)
|
|
dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__,
|
|
result);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* operations setup of the serial interface */
|
|
static const struct tty_operations hso_serial_ops = {
|
|
.open = hso_serial_open,
|
|
.close = hso_serial_close,
|
|
.write = hso_serial_write,
|
|
.write_room = hso_serial_write_room,
|
|
.ioctl = hso_serial_ioctl,
|
|
.set_termios = hso_serial_set_termios,
|
|
.chars_in_buffer = hso_serial_chars_in_buffer,
|
|
.tiocmget = hso_serial_tiocmget,
|
|
.tiocmset = hso_serial_tiocmset,
|
|
.unthrottle = hso_unthrottle
|
|
};
|
|
|
|
static struct usb_driver hso_driver = {
|
|
.name = driver_name,
|
|
.probe = hso_probe,
|
|
.disconnect = hso_disconnect,
|
|
.id_table = hso_ids,
|
|
.suspend = hso_suspend,
|
|
.resume = hso_resume,
|
|
.reset_resume = hso_resume,
|
|
.supports_autosuspend = 1,
|
|
};
|
|
|
|
static int __init hso_init(void)
|
|
{
|
|
int i;
|
|
int result;
|
|
|
|
/* put it in the log */
|
|
printk(KERN_INFO "hso: %s\n", version);
|
|
|
|
/* Initialise the serial table semaphore and table */
|
|
spin_lock_init(&serial_table_lock);
|
|
for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
|
|
serial_table[i] = NULL;
|
|
|
|
/* allocate our driver using the proper amount of supported minors */
|
|
tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
|
|
if (!tty_drv)
|
|
return -ENOMEM;
|
|
|
|
/* fill in all needed values */
|
|
tty_drv->magic = TTY_DRIVER_MAGIC;
|
|
tty_drv->owner = THIS_MODULE;
|
|
tty_drv->driver_name = driver_name;
|
|
tty_drv->name = tty_filename;
|
|
|
|
/* if major number is provided as parameter, use that one */
|
|
if (tty_major)
|
|
tty_drv->major = tty_major;
|
|
|
|
tty_drv->minor_start = 0;
|
|
tty_drv->num = HSO_SERIAL_TTY_MINORS;
|
|
tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
|
|
tty_drv->subtype = SERIAL_TYPE_NORMAL;
|
|
tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
|
|
tty_drv->init_termios = tty_std_termios;
|
|
hso_init_termios(&tty_drv->init_termios);
|
|
tty_set_operations(tty_drv, &hso_serial_ops);
|
|
|
|
/* register the tty driver */
|
|
result = tty_register_driver(tty_drv);
|
|
if (result) {
|
|
printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
|
|
__func__, result);
|
|
return result;
|
|
}
|
|
|
|
/* register this module as an usb driver */
|
|
result = usb_register(&hso_driver);
|
|
if (result) {
|
|
printk(KERN_ERR "Could not register hso driver? error: %d\n",
|
|
result);
|
|
/* cleanup serial interface */
|
|
tty_unregister_driver(tty_drv);
|
|
return result;
|
|
}
|
|
|
|
/* done */
|
|
return 0;
|
|
}
|
|
|
|
static void __exit hso_exit(void)
|
|
{
|
|
printk(KERN_INFO "hso: unloaded\n");
|
|
|
|
tty_unregister_driver(tty_drv);
|
|
/* deregister the usb driver */
|
|
usb_deregister(&hso_driver);
|
|
}
|
|
|
|
/* Module definitions */
|
|
module_init(hso_init);
|
|
module_exit(hso_exit);
|
|
|
|
MODULE_AUTHOR(MOD_AUTHOR);
|
|
MODULE_DESCRIPTION(MOD_DESCRIPTION);
|
|
MODULE_LICENSE(MOD_LICENSE);
|
|
|
|
/* change the debug level (eg: insmod hso.ko debug=0x04) */
|
|
MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
|
|
module_param(debug, int, S_IRUGO | S_IWUSR);
|
|
|
|
/* set the major tty number (eg: insmod hso.ko tty_major=245) */
|
|
MODULE_PARM_DESC(tty_major, "Set the major tty number");
|
|
module_param(tty_major, int, S_IRUGO | S_IWUSR);
|
|
|
|
/* disable network interface (eg: insmod hso.ko disable_net=1) */
|
|
MODULE_PARM_DESC(disable_net, "Disable the network interface");
|
|
module_param(disable_net, int, S_IRUGO | S_IWUSR);
|