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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11945 3c298f89-4303-0410-b956-a3cf2f4a3e73
2907 lines
76 KiB
Diff
2907 lines
76 KiB
Diff
From: Greg Kroah-Hartman <gregkh@suse.de>
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Date: Wed, 14 May 2008 04:57:12 +0000 (-0700)
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Subject: HSO: add option hso driver
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X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=72dc1c096c7051a48ab1dbb12f71976656b55eb5;hp=44f74c046961bd1f21b7d35baaa9165572d1e975
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HSO: add option hso driver
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This driver is for a number of different Option devices. Originally
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written by Option and Andrew Bird, but cleaned up massivly for
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acceptance into mainline by me and others.
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Many thanks to the following for their help in cleaning up the driver by
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providing feedback and patches to it:
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- Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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- Oliver Neukum <oliver@neukum.org>
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- Alan Cox <alan@lxorguk.ukuu.org.uk>
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- Javier Marcet <javier@krausbeck.org>
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Cc: Andrew Bird <ajb@spheresystems.co.uk>
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Cc: Javier Marcet <javier@krausbeck.org>
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Cc: Filip Aben <f.aben@option.com>
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Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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Cc: Oliver Neukum <oliver@neukum.org>
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Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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---
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--- a/drivers/net/Makefile
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+++ b/drivers/net/Makefile
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@@ -237,6 +237,7 @@
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obj-$(CONFIG_USB_KAWETH) += usb/
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obj-$(CONFIG_USB_PEGASUS) += usb/
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obj-$(CONFIG_USB_RTL8150) += usb/
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+obj-$(CONFIG_USB_HSO) += usb/
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obj-$(CONFIG_USB_USBNET) += usb/
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obj-$(CONFIG_USB_ZD1201) += usb/
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--- a/drivers/net/usb/Kconfig
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+++ b/drivers/net/usb/Kconfig
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@@ -154,6 +154,16 @@
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This driver creates an interface named "ethX", where X depends on
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what other networking devices you have in use.
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+config USB_HSO
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+ tristate "Option USB High Speed Mobile Devices"
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+ depends on USB && RFKILL
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+ default n
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+ help
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+ Choose this option if you have an Option HSDPA/HSUPA card.
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+ These cards support downlink speeds of 7.2Mbps or greater.
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+
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+ To compile this driver as a module, choose M here: the
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+ module will be called hso.
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config USB_NET_CDCETHER
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tristate "CDC Ethernet support (smart devices such as cable modems)"
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--- a/drivers/net/usb/Makefile
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+++ b/drivers/net/usb/Makefile
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@@ -6,6 +6,7 @@
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obj-$(CONFIG_USB_KAWETH) += kaweth.o
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obj-$(CONFIG_USB_PEGASUS) += pegasus.o
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obj-$(CONFIG_USB_RTL8150) += rtl8150.o
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+obj-$(CONFIG_USB_HSO) += hso.o
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obj-$(CONFIG_USB_NET_AX8817X) += asix.o
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obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o
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obj-$(CONFIG_USB_NET_DM9601) += dm9601.o
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--- /dev/null
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+++ b/drivers/net/usb/hso.c
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@@ -0,0 +1,2836 @@
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+/******************************************************************************
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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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+ * 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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+ *
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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, should
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+ * not be used.
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+ *
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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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+
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+
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+#define DRIVER_VERSION "1.2"
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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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+
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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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+
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+#define CTRL_URB_RX_SIZE 1024
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+#define CTRL_URB_TX_SIZE 64
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+
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+#define BULK_URB_RX_SIZE 4096
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+#define BULK_URB_TX_SIZE 8192
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+
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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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+
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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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+
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+#define HSO_NET_TX_TIMEOUT (HZ*10)
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+
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+/* Serial port defines and structs. */
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+#define HSO_SERIAL_FLAG_RX_SENT 0
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+
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+#define HSO_SERIAL_MAGIC 0x48534f31
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+
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+/* Number of ttys to handle */
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+#define HSO_SERIAL_TTY_MINORS 256
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+
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+#define MAX_RX_URBS 2
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+
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+#define get_serial_by_tty(x) \
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+ (x ? (struct hso_serial *)x->driver_data : 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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+
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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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+
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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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+/*****************************************************************************/
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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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+/*****************************************************************************/
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+/* Structs */
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+/*****************************************************************************/
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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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+
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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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+
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+ struct usb_endpoint_descriptor *in_endp;
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+ struct usb_endpoint_descriptor *out_endp;
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+
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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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+
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+ struct sk_buff *skb_rx_buf;
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+ struct sk_buff *skb_tx_buf;
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+
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+ enum pkt_parse_state rx_parse_state;
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+ spinlock_t net_lock;
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+
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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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+
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+ unsigned long flags;
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+};
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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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+
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+ struct hso_shared_int *shared_int;
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+
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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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+
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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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+
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+ struct usb_endpoint_descriptor *in_endp;
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+ struct usb_endpoint_descriptor *out_endp;
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+
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+ unsigned long flags;
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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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+
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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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+
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+ int (*write_data) (struct hso_serial *serial);
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+};
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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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+
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+ u32 port_spec;
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+
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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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+
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+ struct usb_device *usb;
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+ struct usb_interface *interface;
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+
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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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+
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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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+
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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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+
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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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+/*****************************************************************************/
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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 void 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 log_usb_status(int status, const char *function);
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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 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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+
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+/*****************************************************************************/
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+/* Helping functions */
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+/*****************************************************************************/
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+
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+/* #define DEBUG */
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+
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+#define dev2net(x) (x->port_data.dev_net)
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+#define dev2ser(x) (x->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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+ u8 i = 0;
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+
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+ printk(KERN_DEBUG "[%d:%s]: len %d", line_count, func_name, len);
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+
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+ for (i = 0; i < len; i++) {
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+ if (!(i % 16))
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+ printk("\n 0x%03x: ", i);
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+ printk("%02x ", (unsigned char)buf[i]);
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+ }
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+ printk("\n");
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+}
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+
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+#define DUMP(buf_, len_) \
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+ dbg_dump(__LINE__, __func__, buf_, len_)
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+
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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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+
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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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+
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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__ ": " DRIVER_VERSION " " 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 struct ktermios *hso_serial_termios[HSO_SERIAL_TTY_MINORS];
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+static struct ktermios *hso_serial_termios_locked[HSO_SERIAL_TTY_MINORS];
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+
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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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+
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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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+
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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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+
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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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+
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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)},
|
|
+ {default_port_device(0x0af0, 0x6751)},
|
|
+ {default_port_device(0x0af0, 0x6771)},
|
|
+ {default_port_device(0x0af0, 0x6791)},
|
|
+ {default_port_device(0x0af0, 0x6811)},
|
|
+ {default_port_device(0x0af0, 0x6911)},
|
|
+ {default_port_device(0x0af0, 0x6951)},
|
|
+ {default_port_device(0x0af0, 0x6971)},
|
|
+ {default_port_device(0x0af0, 0x7011)},
|
|
+ {default_port_device(0x0af0, 0x7031)},
|
|
+ {default_port_device(0x0af0, 0x7051)},
|
|
+ {default_port_device(0x0af0, 0x7071)},
|
|
+ {default_port_device(0x0af0, 0x7111)},
|
|
+ {default_port_device(0x0af0, 0x7211)},
|
|
+ {default_port_device(0x0af0, 0x7251)},
|
|
+ {default_port_device(0x0af0, 0x7271)},
|
|
+ {default_port_device(0x0af0, 0x7311)},
|
|
+ {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
|
|
+ {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
|
|
+ {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
|
|
+ {default_port_device(0x0af0, 0xd033)}, /* Icon-322 */
|
|
+ {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
|
|
+ {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
|
|
+ {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
|
|
+ {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
|
|
+ {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
|
|
+ {}
|
|
+};
|
|
+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->driver_data;
|
|
+ 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);
|
|
+
|
|
+/* 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;
|
|
+ unsigned long flags;
|
|
+
|
|
+ if (!serial_table[index])
|
|
+ return NULL;
|
|
+ spin_lock_irqsave(&serial_table_lock, flags);
|
|
+ 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);
|
|
+}
|
|
+
|
|
+/* log a meaningfull explanation of an USB status */
|
|
+static void log_usb_status(int status, const char *function)
|
|
+{
|
|
+ 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;
|
|
+ default:
|
|
+ explanation = "unknown status";
|
|
+ break;
|
|
+ }
|
|
+ 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);
|
|
+
|
|
+ hso_start_net_device(odev->parent);
|
|
+
|
|
+ /* We are up and running. */
|
|
+ set_bit(HSO_NET_RUNNING, &odev->flags);
|
|
+
|
|
+ /* 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)
|
|
+ log_usb_status(status, __func__);
|
|
+
|
|
+ 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 int 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 0;
|
|
+ }
|
|
+
|
|
+ /* 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", result);
|
|
+ net->stats.tx_errors++;
|
|
+ netif_start_queue(net);
|
|
+ } else {
|
|
+ net->stats.tx_packets++;
|
|
+ net->stats.tx_bytes += skb->len;
|
|
+ /* And tell the kernel when the last transmit started. */
|
|
+ net->trans_start = jiffies;
|
|
+ }
|
|
+ dev_kfree_skb(skb);
|
|
+ /* we're done */
|
|
+ return result;
|
|
+}
|
|
+
|
|
+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);
|
|
+ strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
|
|
+ usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
|
|
+}
|
|
+
|
|
+static 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 = dev_alloc_skb(frame_len);
|
|
+ if (!odev->skb_rx_buf) {
|
|
+ /* We got no receive buffer. */
|
|
+ D1("could not allocate memory");
|
|
+ odev->rx_parse_state = WAIT_SYNC;
|
|
+ return;
|
|
+ }
|
|
+ /* Here's where it came from */
|
|
+ odev->skb_rx_buf->dev = odev->net;
|
|
+
|
|
+ /* 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 =
|
|
+ __constant_htons(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) {
|
|
+ log_usb_status(status, __func__);
|
|
+ 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 % 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", __func__,
|
|
+ result);
|
|
+}
|
|
+
|
|
+/* Serial driver functions */
|
|
+
|
|
+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 ((!tty) || (!tty->termios) || (!serial)) {
|
|
+ printk(KERN_ERR "%s: no tty structures", __func__);
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ D4("port %d", serial->minor);
|
|
+
|
|
+ /*
|
|
+ * The default requirements for this device are:
|
|
+ */
|
|
+ termios = tty->termios;
|
|
+ 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_encode_baud_rate(serial->tty, 115200, 115200);
|
|
+
|
|
+ /*
|
|
+ * Force low_latency on; otherwise the pushes are scheduled;
|
|
+ * this is bad as it opens up the possibility of dropping bytes
|
|
+ * on the floor. We don't want to drop bytes on the floor. :)
|
|
+ */
|
|
+ serial->tty->low_latency = 1;
|
|
+ return;
|
|
+}
|
|
+
|
|
+/* 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) {
|
|
+ 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 */
|
|
+ tty->driver_data = serial;
|
|
+ serial->tty = tty;
|
|
+
|
|
+ /* check for port allready opened, if not set the termios */
|
|
+ serial->open_count++;
|
|
+ if (serial->open_count == 1) {
|
|
+ tty->low_latency = 1;
|
|
+ serial->flags = 0;
|
|
+ /* Force default termio settings */
|
|
+ _hso_serial_set_termios(tty, NULL);
|
|
+ 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");
|
|
+
|
|
+ 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) {
|
|
+ kref_put(&serial->parent->ref, hso_serial_ref_free);
|
|
+ serial->open_count = 0;
|
|
+ if (serial->tty) {
|
|
+ serial->tty->driver_data = NULL;
|
|
+ serial->tty = NULL;
|
|
+ }
|
|
+ if (!usb_gone)
|
|
+ hso_stop_serial_device(serial->parent);
|
|
+ }
|
|
+ if (!usb_gone)
|
|
+ usb_autopm_put_interface(serial->parent->interface);
|
|
+ mutex_unlock(&serial->parent->mutex);
|
|
+}
|
|
+
|
|
+/* 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 */
|
|
+ return;
|
|
+}
|
|
+
|
|
+/* 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 hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
|
|
+{
|
|
+ unsigned int value;
|
|
+ struct hso_serial *serial = get_serial_by_tty(tty);
|
|
+ unsigned long flags;
|
|
+
|
|
+ /* sanity check */
|
|
+ if (!serial) {
|
|
+ D1("no tty structures");
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ spin_lock_irqsave(&serial->serial_lock, flags);
|
|
+ value = ((serial->rts_state) ? TIOCM_RTS : 0) |
|
|
+ ((serial->dtr_state) ? TIOCM_DTR : 0);
|
|
+ spin_unlock_irqrestore(&serial->serial_lock, flags);
|
|
+
|
|
+ return value;
|
|
+}
|
|
+
|
|
+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_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);
|
|
+}
|
|
+
|
|
+/* 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 = hso_port_to_mux(port);
|
|
+ ctrl_req->wLength = 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", __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) {
|
|
+ log_usb_status(status, __func__);
|
|
+ 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);
|
|
+ if (!test_and_set_bit(HSO_SERIAL_FLAG_RX_SENT,
|
|
+ &serial->flags)) {
|
|
+ /* Setup and send a ctrl req read on
|
|
+ * port i */
|
|
+ hso_mux_serial_read(serial);
|
|
+ } else {
|
|
+ D1("Already pending a read on "
|
|
+ "port %d\n", i);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ /* 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;
|
|
+
|
|
+ /* sanity check */
|
|
+ if (!serial) {
|
|
+ D1("serial == NULL");
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ spin_lock(&serial->serial_lock);
|
|
+ serial->tx_urb_used = 0;
|
|
+ spin_unlock(&serial->serial_lock);
|
|
+ if (status) {
|
|
+ log_usb_status(status, __func__);
|
|
+ return;
|
|
+ }
|
|
+ hso_put_activity(serial->parent);
|
|
+ tty_wakeup(serial->tty);
|
|
+ hso_kick_transmit(serial);
|
|
+
|
|
+ D1(" ");
|
|
+ return;
|
|
+}
|
|
+
|
|
+/* 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;
|
|
+
|
|
+ /* sanity check */
|
|
+ if (!serial)
|
|
+ return;
|
|
+
|
|
+ spin_lock(&serial->serial_lock);
|
|
+ serial->tx_urb_used = 0;
|
|
+ spin_unlock(&serial->serial_lock);
|
|
+ if (status) {
|
|
+ log_usb_status(status, __func__);
|
|
+ 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 */
|
|
+ if (serial->open_count > 0) {
|
|
+ /* handle RX data the normal way */
|
|
+ put_rxbuf_data(urb, serial);
|
|
+ }
|
|
+
|
|
+ /* Re issue a read as long as we receive data. */
|
|
+ if (urb->actual_length != 0)
|
|
+ hso_mux_serial_read(serial);
|
|
+ else
|
|
+ clear_bit(HSO_SERIAL_FLAG_RX_SENT, &serial->flags);
|
|
+ } else {
|
|
+ hso_put_activity(serial->parent);
|
|
+ tty_wakeup(serial->tty);
|
|
+ /* response to a write command */
|
|
+ hso_kick_transmit(serial);
|
|
+ }
|
|
+}
|
|
+
|
|
+/* handle RX data for serial port */
|
|
+static void put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
|
|
+{
|
|
+ struct tty_struct *tty = serial->tty;
|
|
+
|
|
+ /* Sanity check */
|
|
+ if (urb == NULL || serial == NULL) {
|
|
+ D1("serial = NULL");
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ /* Push data to tty */
|
|
+ if (tty && urb->actual_length) {
|
|
+ D1("data to push to tty");
|
|
+ tty_insert_flip_string(tty, urb->transfer_buffer,
|
|
+ urb->actual_length);
|
|
+ tty_flip_buffer_push(tty);
|
|
+ }
|
|
+}
|
|
+
|
|
+/* 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 result;
|
|
+ int status = urb->status;
|
|
+
|
|
+ /* sanity check */
|
|
+ if (!serial) {
|
|
+ D1("serial == NULL");
|
|
+ return;
|
|
+ } else if (status) {
|
|
+ log_usb_status(status, __func__);
|
|
+ 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 %
|
|
+ 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 */
|
|
+ put_rxbuf_data(urb, serial);
|
|
+ } else if (status == -ENOENT || status == -ECONNRESET) {
|
|
+ /* Unlinked - check for throttled port. */
|
|
+ D2("Port %d, successfully unlinked urb", serial->minor);
|
|
+ } else {
|
|
+ D2("Port %d, status = %d for read urb", serial->minor, status);
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ usb_mark_last_busy(urb->dev);
|
|
+
|
|
+ /* 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",
|
|
+ __func__, result);
|
|
+ }
|
|
+}
|
|
+
|
|
+/* 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);
|
|
+ }
|
|
+
|
|
+ return result;
|
|
+}
|
|
+
|
|
+static int hso_stop_serial_device(struct hso_device *hso_dev)
|
|
+{
|
|
+ int i;
|
|
+ struct hso_serial *serial = dev2ser(hso_dev);
|
|
+
|
|
+ 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]);
|
|
+ }
|
|
+
|
|
+ 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);
|
|
+ }
|
|
+
|
|
+ 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->driver_data = 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", __func__);
|
|
+ goto exit;
|
|
+ }
|
|
+ serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
|
|
+ if (!serial->tx_buffer) {
|
|
+ dev_err(dev, "%s - Out of memory", __func__);
|
|
+ goto exit;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+exit:
|
|
+ hso_serial_common_free(serial);
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+/* Frees a general hso device */
|
|
+static void hso_free_device(struct hso_device *hso_dev)
|
|
+{
|
|
+ kfree(hso_dev);
|
|
+}
|
|
+
|
|
+/* 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);
|
|
+
|
|
+ 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;
|
|
+
|
|
+ /* 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]);
|
|
+ }
|
|
+ usb_free_urb(hso_net->mux_bulk_tx_urb);
|
|
+ kfree(hso_net->mux_bulk_tx_buf);
|
|
+
|
|
+ remove_net_device(hso_net->parent);
|
|
+
|
|
+ if (hso_net->net) {
|
|
+ unregister_netdev(hso_net->net);
|
|
+ free_netdev(hso_net->net);
|
|
+ }
|
|
+
|
|
+ hso_free_device(hso_dev);
|
|
+}
|
|
+
|
|
+/* 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->open = hso_net_open;
|
|
+ net->stop = hso_net_close;
|
|
+ net->hard_start_xmit = hso_net_start_xmit;
|
|
+ net->tx_timeout = hso_net_tx_timeout;
|
|
+ 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_radio_toggle(void *data, enum rfkill_state state)
|
|
+{
|
|
+ struct hso_device *hso_dev = data;
|
|
+ int enabled = (state == RFKILL_STATE_ON);
|
|
+ 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;
|
|
+}
|
|
+
|
|
+/* 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_dev->dev;
|
|
+ char *rfkn;
|
|
+
|
|
+ hso_net->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev,
|
|
+ RFKILL_TYPE_WLAN);
|
|
+ if (!hso_net->rfkill) {
|
|
+ dev_err(dev, "%s - Out of memory", __func__);
|
|
+ return;
|
|
+ }
|
|
+ rfkn = kzalloc(20, GFP_KERNEL);
|
|
+ if (!rfkn) {
|
|
+ rfkill_free(hso_net->rfkill);
|
|
+ dev_err(dev, "%s - Out of memory", __func__);
|
|
+ return;
|
|
+ }
|
|
+ snprintf(rfkn, 20, "hso-%d",
|
|
+ interface->altsetting->desc.bInterfaceNumber);
|
|
+ hso_net->rfkill->name = rfkn;
|
|
+ hso_net->rfkill->state = RFKILL_STATE_ON;
|
|
+ hso_net->rfkill->data = hso_dev;
|
|
+ hso_net->rfkill->toggle_radio = hso_radio_toggle;
|
|
+ if (rfkill_register(hso_net->rfkill) < 0) {
|
|
+ kfree(rfkn);
|
|
+ hso_net->rfkill->name = NULL;
|
|
+ rfkill_free(hso_net->rfkill);
|
|
+ dev_err(dev, "%s - Failed to register rfkill", __func__);
|
|
+ return;
|
|
+ }
|
|
+}
|
|
+
|
|
+/* Creates our network device */
|
|
+static struct hso_device *hso_create_net_device(struct usb_interface *interface)
|
|
+{
|
|
+ int result, i;
|
|
+ struct net_device *net;
|
|
+ struct hso_net *hso_net;
|
|
+ struct hso_device *hso_dev;
|
|
+
|
|
+ hso_dev = hso_create_device(interface, HSO_INTF_MUX | HSO_PORT_NETWORK);
|
|
+ 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);
|
|
+
|
|
+ /* 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;
|
|
+}
|
|
+
|
|
+/* 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);
|
|
+ }
|
|
+ kfree(serial);
|
|
+ hso_free_device(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;
|
|
+
|
|
+ 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_MODEM)
|
|
+ num_urbs = 2;
|
|
+ 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 exit;
|
|
+ }
|
|
+
|
|
+ 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 exit;
|
|
+ }
|
|
+
|
|
+ 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;
|
|
+exit:
|
|
+ if (hso_dev && serial)
|
|
+ hso_serial_common_free(serial);
|
|
+ kfree(serial);
|
|
+ hso_free_device(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)
|
|
+ hso_free_device(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?");
|
|
+ goto exit;
|
|
+ }
|
|
+ mux->shared_intr_buf = kzalloc(mux->intr_endp->wMaxPacketSize,
|
|
+ GFP_KERNEL);
|
|
+ if (!mux->shared_intr_buf) {
|
|
+ dev_err(&interface->dev, "Could not allocate intr buf?");
|
|
+ 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);
|
|
+ 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);
|
|
+ else
|
|
+ hso_dev =
|
|
+ hso_create_bulk_serial_device(interface, port_spec);
|
|
+ if (!hso_dev)
|
|
+ goto exit;
|
|
+ break;
|
|
+ default:
|
|
+ goto exit;
|
|
+ }
|
|
+
|
|
+ usb_driver_claim_interface(&hso_driver, interface, hso_dev);
|
|
+
|
|
+ /* 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);
|
|
+
|
|
+ usb_driver_release_interface(&hso_driver, interface);
|
|
+}
|
|
+
|
|
+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]);
|
|
+ /* 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);
|
|
+ }
|
|
+ result = hso_start_net_device(network_table[i]);
|
|
+ if (result)
|
|
+ goto out;
|
|
+ }
|
|
+ }
|
|
+
|
|
+out:
|
|
+ return result;
|
|
+}
|
|
+
|
|
+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;
|
|
+ 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]);
|
|
+ if (hso_dev->tty)
|
|
+ tty_hangup(hso_dev->tty);
|
|
+ mutex_lock(&hso_dev->parent->mutex);
|
|
+ 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);
|
|
+ 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) &&
|
|
+ ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == 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,
|
|
+ shared_int->intr_endp->wMaxPacketSize,
|
|
+ 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", __func__,
|
|
+ result);
|
|
+
|
|
+ return result;
|
|
+}
|
|
+
|
|
+/* operations setup of the serial interface */
|
|
+static struct tty_operations hso_serial_ops = {
|
|
+ .open = hso_serial_open,
|
|
+ .close = hso_serial_close,
|
|
+ .write = hso_serial_write,
|
|
+ .write_room = hso_serial_write_room,
|
|
+ .set_termios = hso_serial_set_termios,
|
|
+ .chars_in_buffer = hso_serial_chars_in_buffer,
|
|
+ .tiocmget = hso_serial_tiocmget,
|
|
+ .tiocmset = hso_serial_tiocmset,
|
|
+};
|
|
+
|
|
+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,
|
|
+ .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;
|
|
+ tty_drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
|
+ tty_drv->termios = hso_serial_termios;
|
|
+ tty_drv->termios_locked = hso_serial_termios_locked;
|
|
+ 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);
|
|
+MODULE_INFO(Version, DRIVER_VERSION);
|
|
+
|
|
+/* 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);
|