blob: 01d882cf3775a2523662e4ab40f917a91eac5099 [file] [log] [blame]
Kevin Lloyd69de51f2006-06-30 11:17:55 -07001/*
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07002 USB Driver for Sierra Wireless
3
Elina Pasheva40d2ff32009-04-29 10:26:46 -07004 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>,
5
6 Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer
7 <linux@sierrawireless.com>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07008
9 IMPORTANT DISCLAIMER: This driver is not commercially supported by
10 Sierra Wireless. Use at your own risk.
11
12 This driver is free software; you can redistribute it and/or modify
13 it under the terms of Version 2 of the GNU General Public License as
14 published by the Free Software Foundation.
15
16 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
17 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070018*/
Elina Pasheva3a2b8082009-11-04 10:25:48 -080019/* Uncomment to log function calls */
20/* #define DEBUG */
21#define DRIVER_VERSION "v.1.7.16"
Elina Pasheva40d2ff32009-04-29 10:26:46 -070022#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070023#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
Kevin Lloyd69de51f2006-06-30 11:17:55 -070024
25#include <linux/kernel.h>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070026#include <linux/jiffies.h>
27#include <linux/errno.h>
Kevin Lloyd69de51f2006-06-30 11:17:55 -070028#include <linux/tty.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090029#include <linux/slab.h>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070030#include <linux/tty_flip.h>
Kevin Lloyd69de51f2006-06-30 11:17:55 -070031#include <linux/module.h>
32#include <linux/usb.h>
Greg Kroah-Hartmana9698882006-07-11 21:22:58 -070033#include <linux/usb/serial.h>
Kevin Lloyd69de51f2006-06-30 11:17:55 -070034
Kevin Lloyd228426e2008-01-10 11:11:04 -080035#define SWIMS_USB_REQUEST_SetPower 0x00
36#define SWIMS_USB_REQUEST_SetNmea 0x07
Kevin Lloyd112225b2007-07-16 13:49:27 -070037
Elina Pasheva3a2b8082009-11-04 10:25:48 -080038#define N_IN_URB_HM 8
39#define N_OUT_URB_HM 64
40#define N_IN_URB 4
41#define N_OUT_URB 4
Kevin Lloyd112225b2007-07-16 13:49:27 -070042#define IN_BUFLEN 4096
43
Elina Pasheva40d2ff32009-04-29 10:26:46 -070044#define MAX_TRANSFER (PAGE_SIZE - 512)
45/* MAX_TRANSFER is chosen so that the VM is not stressed by
46 allocations > PAGE_SIZE and the number of packets in a page
47 is an integer 512 is the largest possible packet on EHCI */
48
Rusty Russell90ab5ee2012-01-13 09:32:20 +103049static bool nmea;
Kevin Lloyd112225b2007-07-16 13:49:27 -070050
Elina Pasheva4db22992009-06-11 14:32:01 +010051/* Used in interface blacklisting */
52struct sierra_iface_info {
53 const u32 infolen; /* number of interface numbers on blacklist */
54 const u8 *ifaceinfo; /* pointer to the array holding the numbers */
55};
56
Oliver Neukume6929a92009-09-04 23:19:53 +020057struct sierra_intf_private {
58 spinlock_t susp_lock;
59 unsigned int suspended:1;
60 int in_flight;
61};
62
Adrian Bunk82a24e62007-07-29 16:59:02 +020063static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
Kevin Lloyd112225b2007-07-16 13:49:27 -070064{
Greg Kroah-Hartman64318a52012-05-03 16:44:48 -070065 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
Kevin Lloyd228426e2008-01-10 11:11:04 -080066 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
Kevin Lloydf3564de2008-03-28 10:05:08 -070067 USB_TYPE_VENDOR, /* __u8 request type */
Kevin Lloyd228426e2008-01-10 11:11:04 -080068 swiState, /* __u16 value */
69 0, /* __u16 index */
70 NULL, /* void *data */
71 0, /* __u16 size */
72 USB_CTRL_SET_TIMEOUT); /* int timeout */
Kevin Lloyd112225b2007-07-16 13:49:27 -070073}
74
Kevin Lloyd228426e2008-01-10 11:11:04 -080075static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
Kevin Lloyd112225b2007-07-16 13:49:27 -070076{
Greg Kroah-Hartman64318a52012-05-03 16:44:48 -070077 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
Kevin Lloyd228426e2008-01-10 11:11:04 -080078 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
Kevin Lloydf3564de2008-03-28 10:05:08 -070079 USB_TYPE_VENDOR, /* __u8 request type */
Kevin Lloyd228426e2008-01-10 11:11:04 -080080 enable, /* __u16 value */
81 0x0000, /* __u16 index */
82 NULL, /* void *data */
83 0, /* __u16 size */
84 USB_CTRL_SET_TIMEOUT); /* int timeout */
Kevin Lloyd228426e2008-01-10 11:11:04 -080085}
Kevin Lloyd112225b2007-07-16 13:49:27 -070086
Kevin Lloyd228426e2008-01-10 11:11:04 -080087static int sierra_calc_num_ports(struct usb_serial *serial)
88{
Elina Pasheva9636b682009-05-12 13:12:54 -070089 int num_ports = 0;
90 u8 ifnum, numendpoints;
91
Elina Pasheva9636b682009-05-12 13:12:54 -070092 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
93 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
Kevin Lloyd228426e2008-01-10 11:11:04 -080094
Elina Pasheva9636b682009-05-12 13:12:54 -070095 /* Dummy interface present on some SKUs should be ignored */
96 if (ifnum == 0x99)
97 num_ports = 0;
98 else if (numendpoints <= 3)
99 num_ports = 1;
100 else
101 num_ports = (numendpoints-1)/2;
102 return num_ports;
Kevin Lloyd228426e2008-01-10 11:11:04 -0800103}
104
Elina Pasheva4db22992009-06-11 14:32:01 +0100105static int is_blacklisted(const u8 ifnum,
106 const struct sierra_iface_info *blacklist)
107{
108 const u8 *info;
109 int i;
110
111 if (blacklist) {
112 info = blacklist->ifaceinfo;
113
114 for (i = 0; i < blacklist->infolen; i++) {
115 if (info[i] == ifnum)
116 return 1;
117 }
118 }
119 return 0;
120}
121
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800122static int is_himemory(const u8 ifnum,
123 const struct sierra_iface_info *himemorylist)
124{
125 const u8 *info;
126 int i;
127
128 if (himemorylist) {
129 info = himemorylist->ifaceinfo;
130
131 for (i=0; i < himemorylist->infolen; i++) {
132 if (info[i] == ifnum)
133 return 1;
134 }
135 }
136 return 0;
137}
138
Kevin Lloyd71069672008-04-02 11:24:56 -0700139static int sierra_calc_interface(struct usb_serial *serial)
140{
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700141 int interface;
142 struct usb_interface *p_interface;
143 struct usb_host_interface *p_host_interface;
Kevin Lloyd71069672008-04-02 11:24:56 -0700144
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700145 /* Get the interface structure pointer from the serial struct */
146 p_interface = serial->interface;
Kevin Lloyd71069672008-04-02 11:24:56 -0700147
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700148 /* Get a pointer to the host interface structure */
149 p_host_interface = p_interface->cur_altsetting;
Kevin Lloyd71069672008-04-02 11:24:56 -0700150
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700151 /* read the interface descriptor for this active altsetting
152 * to find out the interface number we are on
153 */
154 interface = p_host_interface->desc.bInterfaceNumber;
Kevin Lloyd71069672008-04-02 11:24:56 -0700155
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700156 return interface;
Kevin Lloyd71069672008-04-02 11:24:56 -0700157}
158
Kevin Lloyd228426e2008-01-10 11:11:04 -0800159static int sierra_probe(struct usb_serial *serial,
160 const struct usb_device_id *id)
161{
162 int result = 0;
163 struct usb_device *udev;
Oliver Neukume6929a92009-09-04 23:19:53 +0200164 struct sierra_intf_private *data;
Kevin Lloyd228426e2008-01-10 11:11:04 -0800165 u8 ifnum;
Kevin Lloyde3173b22008-07-10 14:14:51 -0700166
Kevin Lloyd228426e2008-01-10 11:11:04 -0800167 udev = serial->dev;
Kevin Lloyde3173b22008-07-10 14:14:51 -0700168 ifnum = sierra_calc_interface(serial);
Greg Kroah-Hartman64318a52012-05-03 16:44:48 -0700169
Kevin Lloyde3173b22008-07-10 14:14:51 -0700170 /*
171 * If this interface supports more than 1 alternate
172 * select the 2nd one
173 */
174 if (serial->interface->num_altsetting == 2) {
175 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
176 ifnum);
177 /* We know the alternate setting is 1 for the MC8785 */
178 usb_set_interface(udev, ifnum, 1);
179 }
Kevin Lloyd71069672008-04-02 11:24:56 -0700180
Elina Pasheva4db22992009-06-11 14:32:01 +0100181 /* ifnum could have changed - by calling usb_set_interface */
182 ifnum = sierra_calc_interface(serial);
183
184 if (is_blacklisted(ifnum,
185 (struct sierra_iface_info *)id->driver_info)) {
186 dev_dbg(&serial->dev->dev,
187 "Ignoring blacklisted interface #%d\n", ifnum);
188 return -ENODEV;
189 }
190
Oliver Neukume6929a92009-09-04 23:19:53 +0200191 data = serial->private = kzalloc(sizeof(struct sierra_intf_private), GFP_KERNEL);
192 if (!data)
193 return -ENOMEM;
194 spin_lock_init(&data->susp_lock);
195
Kevin Lloyd228426e2008-01-10 11:11:04 -0800196 return result;
Kevin Lloyd112225b2007-07-16 13:49:27 -0700197}
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700198
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800199/* interfaces with higher memory requirements */
200static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
201static const struct sierra_iface_info typeA_interface_list = {
202 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
203 .ifaceinfo = hi_memory_typeA_ifaces,
204};
205
206static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
207static const struct sierra_iface_info typeB_interface_list = {
208 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
209 .ifaceinfo = hi_memory_typeB_ifaces,
210};
211
212/* 'blacklist' of interfaces not served by this driver */
Bjørn Mork749541d12012-04-17 21:37:29 +0200213static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
Elina Pasheva4db22992009-06-11 14:32:01 +0100214static const struct sierra_iface_info direct_ip_interface_blacklist = {
215 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
216 .ifaceinfo = direct_ip_non_serial_ifaces,
217};
218
Németh Márton7d40d7e2010-01-10 15:34:24 +0100219static const struct usb_device_id id_table[] = {
Elina Pashevac5f3d872009-07-09 17:55:18 -0700220 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
221 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
William Lightningcfbaa392010-03-26 10:51:20 -0700222 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700223 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
224
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700225 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800226 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
Greg Kroah-Hartman90ac3c82002-04-09 12:14:34 -0700227 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800228 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
agilmore@wirelessbeehive.comb9e13ac2007-12-04 11:37:12 -0700229 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700230 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
231 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
232 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800233 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
234 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700235 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700236 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
august huber9d72c812010-06-28 11:46:05 -0700237 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700238 /* Sierra Wireless C597 */
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700239 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
Elina Pashevac5f3d872009-07-09 17:55:18 -0700240 /* Sierra Wireless T598 */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700241 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
Elina Pashevac5f3d872009-07-09 17:55:18 -0700242 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
243 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
244 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
245 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700246
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700247 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
248 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700249 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
250 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
251 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
252 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700253 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700254 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
Kevin Lloyd7f170a62008-03-14 00:53:24 -0700255 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700256 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700257 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
Kevin Lloyd71069672008-04-02 11:24:56 -0700258 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700259 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700260 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
261 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700262 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
263 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
264 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
265 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
Kevin Lloydb77a5c72008-09-17 09:03:38 -0700266 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700267 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
Elina Pasheva4db22992009-06-11 14:32:01 +0100268 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
269 { USB_DEVICE(0x1199, 0x683C) },
270 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
271 /* Sierra Wireless MC8790, MC8791, MC8792 */
272 { USB_DEVICE(0x1199, 0x683E) },
Kevin Lloyd9454c462007-07-16 13:49:29 -0700273 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
274 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
275 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
276 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
Kevin Lloyd6835b322008-01-10 11:11:04 -0800277 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
Jessica L. Blank62aad3a2007-12-30 20:11:35 -0600278 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700279 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
280 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
281 /* Sierra Wireless C885 */
282 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700283 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700284 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700285 /* Sierra Wireless C22/C33 */
Kevin Lloyd73b2c202008-08-25 19:20:40 -0700286 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700287 /* Sierra Wireless HSPA Non-Composite Device */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700288 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700289 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
Elina Pasheva4db22992009-06-11 14:32:01 +0100290 { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
291 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
292 },
Tom Cassidy19a3dd12012-06-06 17:08:48 +1000293 /* AT&T Direct IP LTE modems */
294 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
295 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
296 },
Jon Thomase1dc5152011-02-16 11:02:34 -0500297 { USB_DEVICE(0x0f3d, 0x68A3), /* Airprime/Sierra Wireless Direct IP modems */
298 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
299 },
Richard Farina1ebca9d2010-01-20 16:42:33 -0500300 { USB_DEVICE(0x413C, 0x08133) }, /* Dell Computer Corp. Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */
Elina Pasheva4db22992009-06-11 14:32:01 +0100301
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700302 { }
303};
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700304MODULE_DEVICE_TABLE(usb, id_table);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700305
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700306
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700307struct sierra_port_private {
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900308 spinlock_t lock; /* lock the structure */
309 int outstanding_urbs; /* number of out urbs in flight */
Oliver Neukume6929a92009-09-04 23:19:53 +0200310 struct usb_anchor active;
311 struct usb_anchor delayed;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900312
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800313 int num_out_urbs;
314 int num_in_urbs;
Oliver Neukum4f4f9c52008-03-14 00:53:24 -0700315 /* Input endpoints and buffers for this port */
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800316 struct urb *in_urbs[N_IN_URB_HM];
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700317
318 /* Settings for the port */
319 int rts_state; /* Handshaking pins (outputs) */
320 int dtr_state;
321 int cts_state; /* Handshaking pins (inputs) */
322 int dsr_state;
323 int dcd_state;
324 int ri_state;
Oliver Neukume6929a92009-09-04 23:19:53 +0200325 unsigned int opened:1;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700326};
327
Alan Cox335f8512009-06-11 12:26:29 +0100328static int sierra_send_setup(struct usb_serial_port *port)
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700329{
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700330 struct usb_serial *serial = port->serial;
331 struct sierra_port_private *portdata;
Kevin Lloyd228426e2008-01-10 11:11:04 -0800332 __u16 interface = 0;
Alan Cox335f8512009-06-11 12:26:29 +0100333 int val = 0;
Elina Pasheva3c77d512009-10-16 12:04:54 -0700334 int do_send = 0;
335 int retval;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700336
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700337 portdata = usb_get_serial_port_data(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700338
Alan Cox335f8512009-06-11 12:26:29 +0100339 if (portdata->dtr_state)
340 val |= 0x01;
341 if (portdata->rts_state)
342 val |= 0x02;
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700343
Alan Cox335f8512009-06-11 12:26:29 +0100344 /* If composite device then properly report interface */
Alan Cox00b040d2009-06-11 14:29:29 +0100345 if (serial->num_ports == 1) {
Alan Cox335f8512009-06-11 12:26:29 +0100346 interface = sierra_calc_interface(serial);
Alan Cox00b040d2009-06-11 14:29:29 +0100347 /* Control message is sent only to interfaces with
348 * interrupt_in endpoints
349 */
350 if (port->interrupt_in_urb) {
351 /* send control message */
Elina Pasheva3c77d512009-10-16 12:04:54 -0700352 do_send = 1;
Alan Cox00b040d2009-06-11 14:29:29 +0100353 }
354 }
Kevin Lloyde3173b22008-07-10 14:14:51 -0700355
Alan Cox335f8512009-06-11 12:26:29 +0100356 /* Otherwise the need to do non-composite mapping */
357 else {
358 if (port->bulk_out_endpointAddress == 2)
359 interface = 0;
360 else if (port->bulk_out_endpointAddress == 4)
361 interface = 1;
362 else if (port->bulk_out_endpointAddress == 5)
363 interface = 2;
Elina Pasheva3c77d512009-10-16 12:04:54 -0700364
365 do_send = 1;
Alan Cox00b040d2009-06-11 14:29:29 +0100366 }
Elina Pasheva3c77d512009-10-16 12:04:54 -0700367 if (!do_send)
368 return 0;
369
Oliver Neukum5b7c1172011-02-11 12:56:40 +0100370 retval = usb_autopm_get_interface(serial->interface);
371 if (retval < 0)
372 return retval;
373
Elina Pasheva3c77d512009-10-16 12:04:54 -0700374 retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
375 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
376 usb_autopm_put_interface(serial->interface);
377
378 return retval;
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700379}
380
Alan Cox95da3102008-07-22 11:09:07 +0100381static void sierra_set_termios(struct tty_struct *tty,
382 struct usb_serial_port *port, struct ktermios *old_termios)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700383{
Alan Coxadc8d742012-07-14 15:31:47 +0100384 tty_termios_copy_hw(&tty->termios, old_termios);
Alan Cox335f8512009-06-11 12:26:29 +0100385 sierra_send_setup(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700386}
387
Alan Cox60b33c12011-02-14 16:26:14 +0000388static int sierra_tiocmget(struct tty_struct *tty)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700389{
Alan Cox95da3102008-07-22 11:09:07 +0100390 struct usb_serial_port *port = tty->driver_data;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700391 unsigned int value;
392 struct sierra_port_private *portdata;
393
394 portdata = usb_get_serial_port_data(port);
395
396 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
397 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
398 ((portdata->cts_state) ? TIOCM_CTS : 0) |
399 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
400 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
401 ((portdata->ri_state) ? TIOCM_RNG : 0);
402
403 return value;
404}
405
Alan Cox20b9d172011-02-14 16:26:50 +0000406static int sierra_tiocmset(struct tty_struct *tty,
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700407 unsigned int set, unsigned int clear)
408{
Alan Cox95da3102008-07-22 11:09:07 +0100409 struct usb_serial_port *port = tty->driver_data;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700410 struct sierra_port_private *portdata;
411
412 portdata = usb_get_serial_port_data(port);
413
414 if (set & TIOCM_RTS)
415 portdata->rts_state = 1;
416 if (set & TIOCM_DTR)
417 portdata->dtr_state = 1;
418
419 if (clear & TIOCM_RTS)
420 portdata->rts_state = 0;
421 if (clear & TIOCM_DTR)
422 portdata->dtr_state = 0;
Alan Cox335f8512009-06-11 12:26:29 +0100423 return sierra_send_setup(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700424}
425
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100426static void sierra_release_urb(struct urb *urb)
427{
428 struct usb_serial_port *port;
429 if (urb) {
Greg Kroah-Hartman64318a52012-05-03 16:44:48 -0700430 port = urb->context;
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100431 kfree(urb->transfer_buffer);
432 usb_free_urb(urb);
433 }
434}
435
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900436static void sierra_outdat_callback(struct urb *urb)
437{
438 struct usb_serial_port *port = urb->context;
439 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
Oliver Neukume6929a92009-09-04 23:19:53 +0200440 struct sierra_intf_private *intfdata;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900441 int status = urb->status;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900442
Oliver Neukume6929a92009-09-04 23:19:53 +0200443 intfdata = port->serial->private;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900444
445 /* free up the transfer buffer, as usb_free_urb() does not do this */
446 kfree(urb->transfer_buffer);
Oliver Neukume6929a92009-09-04 23:19:53 +0200447 usb_autopm_put_interface_async(port->serial->interface);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900448 if (status)
Kevin Lloyd7384a922008-09-16 21:05:24 -0700449 dev_dbg(&port->dev, "%s - nonzero write bulk status "
Elina Pasheva5d44b362009-04-27 18:41:52 -0700450 "received: %d\n", __func__, status);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900451
Oliver Neukume6929a92009-09-04 23:19:53 +0200452 spin_lock(&portdata->lock);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900453 --portdata->outstanding_urbs;
Oliver Neukume6929a92009-09-04 23:19:53 +0200454 spin_unlock(&portdata->lock);
455 spin_lock(&intfdata->susp_lock);
456 --intfdata->in_flight;
457 spin_unlock(&intfdata->susp_lock);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900458
459 usb_serial_port_softint(port);
460}
461
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700462/* Write */
Alan Cox95da3102008-07-22 11:09:07 +0100463static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
464 const unsigned char *buf, int count)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700465{
Julia Lawalla45a1e02010-01-16 16:59:51 +0100466 struct sierra_port_private *portdata;
Oliver Neukume6929a92009-09-04 23:19:53 +0200467 struct sierra_intf_private *intfdata;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900468 struct usb_serial *serial = port->serial;
469 unsigned long flags;
470 unsigned char *buffer;
471 struct urb *urb;
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700472 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
473 int retval = 0;
474
475 /* verify that we actually have some data to write */
476 if (count == 0)
477 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700478
479 portdata = usb_get_serial_port_data(port);
Oliver Neukume6929a92009-09-04 23:19:53 +0200480 intfdata = serial->private;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700481
Andrew Morton0b103952009-05-12 15:27:59 -0700482 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900483 spin_lock_irqsave(&portdata->lock, flags);
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700484 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
485 portdata->outstanding_urbs);
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800486 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900487 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd7384a922008-09-16 21:05:24 -0700488 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900489 return 0;
490 }
491 portdata->outstanding_urbs++;
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700492 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
493 portdata->outstanding_urbs);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900494 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700495
Oliver Neukume6929a92009-09-04 23:19:53 +0200496 retval = usb_autopm_get_interface_async(serial->interface);
497 if (retval < 0) {
498 spin_lock_irqsave(&portdata->lock, flags);
499 portdata->outstanding_urbs--;
500 spin_unlock_irqrestore(&portdata->lock, flags);
501 goto error_simple;
502 }
503
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700504 buffer = kmalloc(writesize, GFP_ATOMIC);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900505 if (!buffer) {
506 dev_err(&port->dev, "out of memory\n");
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700507 retval = -ENOMEM;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900508 goto error_no_buffer;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700509 }
510
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900511 urb = usb_alloc_urb(0, GFP_ATOMIC);
512 if (!urb) {
513 dev_err(&port->dev, "no more free urbs\n");
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700514 retval = -ENOMEM;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900515 goto error_no_urb;
516 }
517
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700518 memcpy(buffer, buf, writesize);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900519
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100520 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900521
522 usb_fill_bulk_urb(urb, serial->dev,
523 usb_sndbulkpipe(serial->dev,
524 port->bulk_out_endpointAddress),
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700525 buffer, writesize, sierra_outdat_callback, port);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900526
Elina Pasheva238ebd12009-05-12 13:12:24 -0700527 /* Handle the need to send a zero length packet */
528 urb->transfer_flags |= URB_ZERO_PACKET;
529
Oliver Neukume6929a92009-09-04 23:19:53 +0200530 spin_lock_irqsave(&intfdata->susp_lock, flags);
531
532 if (intfdata->suspended) {
533 usb_anchor_urb(urb, &portdata->delayed);
534 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
535 goto skip_power;
536 } else {
537 usb_anchor_urb(urb, &portdata->active);
538 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900539 /* send it down the pipe */
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700540 retval = usb_submit_urb(urb, GFP_ATOMIC);
541 if (retval) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200542 usb_unanchor_urb(urb);
543 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900544 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700545 "with status = %d\n", __func__, retval);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900546 goto error;
Oliver Neukume6929a92009-09-04 23:19:53 +0200547 } else {
548 intfdata->in_flight++;
549 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900550 }
551
Oliver Neukume6929a92009-09-04 23:19:53 +0200552skip_power:
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900553 /* we are done with this urb, so let the host driver
554 * really free it when it is finished with it */
555 usb_free_urb(urb);
556
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700557 return writesize;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900558error:
559 usb_free_urb(urb);
560error_no_urb:
561 kfree(buffer);
562error_no_buffer:
563 spin_lock_irqsave(&portdata->lock, flags);
564 --portdata->outstanding_urbs;
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700565 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
566 portdata->outstanding_urbs);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900567 spin_unlock_irqrestore(&portdata->lock, flags);
Oliver Neukume6929a92009-09-04 23:19:53 +0200568 usb_autopm_put_interface_async(serial->interface);
569error_simple:
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700570 return retval;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700571}
572
573static void sierra_indat_callback(struct urb *urb)
574{
575 int err;
576 int endpoint;
577 struct usb_serial_port *port;
578 struct tty_struct *tty;
579 unsigned char *data = urb->transfer_buffer;
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700580 int status = urb->status;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700581
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700582 endpoint = usb_pipeendpoint(urb->pipe);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700583 port = urb->context;
584
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700585 if (status) {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700586 dev_dbg(&port->dev, "%s: nonzero status: %d on"
Elina Pasheva5d44b362009-04-27 18:41:52 -0700587 " endpoint %02x\n", __func__, status, endpoint);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700588 } else {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700589 if (urb->actual_length) {
Alan Coxd95186d2009-01-02 13:42:56 +0000590 tty = tty_port_tty_get(&port->port);
Elina Pashevab87c6e82010-02-15 14:50:14 -0800591 if (tty) {
Elina Pashevab87c6e82010-02-15 14:50:14 -0800592 tty_insert_flip_string(tty, data,
593 urb->actual_length);
594 tty_flip_buffer_push(tty);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700595
Elina Pashevab87c6e82010-02-15 14:50:14 -0800596 tty_kref_put(tty);
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100597 usb_serial_debug_data(&port->dev, __func__,
598 urb->actual_length, data);
Elina Pashevab87c6e82010-02-15 14:50:14 -0800599 }
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700600 } else {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700601 dev_dbg(&port->dev, "%s: empty read urb"
Elina Pasheva5d44b362009-04-27 18:41:52 -0700602 " received\n", __func__);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700603 }
604 }
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700605
606 /* Resubmit urb so we continue receiving */
Alan Stern1f871582010-02-17 10:05:47 -0500607 if (status != -ESHUTDOWN && status != -EPERM) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200608 usb_mark_last_busy(port->serial->dev);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700609 err = usb_submit_urb(urb, GFP_ATOMIC);
Alan Stern1f871582010-02-17 10:05:47 -0500610 if (err && err != -EPERM)
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700611 dev_err(&port->dev, "resubmit read urb failed."
612 "(%d)\n", err);
613 }
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700614}
615
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700616static void sierra_instat_callback(struct urb *urb)
617{
618 int err;
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700619 int status = urb->status;
Ming Leicdc97792008-02-24 18:41:47 +0800620 struct usb_serial_port *port = urb->context;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700621 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
622 struct usb_serial *serial = port->serial;
623
Elina Pasheva5d44b362009-04-27 18:41:52 -0700624 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
Kevin Lloyd7384a922008-09-16 21:05:24 -0700625 urb, port, portdata);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700626
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700627 if (status == 0) {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700628 struct usb_ctrlrequest *req_pkt =
629 (struct usb_ctrlrequest *)urb->transfer_buffer;
630
631 if (!req_pkt) {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700632 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
633 __func__);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700634 return;
635 }
636 if ((req_pkt->bRequestType == 0xA1) &&
637 (req_pkt->bRequest == 0x20)) {
638 int old_dcd_state;
639 unsigned char signals = *((unsigned char *)
640 urb->transfer_buffer +
641 sizeof(struct usb_ctrlrequest));
Alan Cox4a90f092008-10-13 10:39:46 +0100642 struct tty_struct *tty;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700643
Elina Pasheva5d44b362009-04-27 18:41:52 -0700644 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
Kevin Lloyd7384a922008-09-16 21:05:24 -0700645 signals);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700646
647 old_dcd_state = portdata->dcd_state;
648 portdata->cts_state = 1;
649 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
650 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
651 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
652
Alan Cox4a90f092008-10-13 10:39:46 +0100653 tty = tty_port_tty_get(&port->port);
654 if (tty && !C_CLOCAL(tty) &&
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700655 old_dcd_state && !portdata->dcd_state)
Alan Cox4a90f092008-10-13 10:39:46 +0100656 tty_hangup(tty);
657 tty_kref_put(tty);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700658 } else {
Elina Pasheva5d44b362009-04-27 18:41:52 -0700659 dev_dbg(&port->dev, "%s: type %x req %x\n",
Kevin Lloyd7384a922008-09-16 21:05:24 -0700660 __func__, req_pkt->bRequestType,
661 req_pkt->bRequest);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700662 }
663 } else
Elina Pasheva5d44b362009-04-27 18:41:52 -0700664 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700665
666 /* Resubmit urb so we continue receiving IRQ data */
Alan Stern1f871582010-02-17 10:05:47 -0500667 if (status != -ESHUTDOWN && status != -ENOENT) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200668 usb_mark_last_busy(serial->dev);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700669 err = usb_submit_urb(urb, GFP_ATOMIC);
Alan Stern1f871582010-02-17 10:05:47 -0500670 if (err && err != -EPERM)
Elina Pashevac76a23d2009-05-12 13:12:37 -0700671 dev_err(&port->dev, "%s: resubmit intr urb "
672 "failed. (%d)\n", __func__, err);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700673 }
674}
675
Alan Cox95da3102008-07-22 11:09:07 +0100676static int sierra_write_room(struct tty_struct *tty)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700677{
Alan Cox95da3102008-07-22 11:09:07 +0100678 struct usb_serial_port *port = tty->driver_data;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900679 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
680 unsigned long flags;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700681
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900682 /* try to give a good number back based on if we have any free urbs at
683 * this point in time */
684 spin_lock_irqsave(&portdata->lock, flags);
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800685 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900686 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd7384a922008-09-16 21:05:24 -0700687 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900688 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700689 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900690 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700691
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900692 return 2048;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700693}
694
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100695static void sierra_stop_rx_urbs(struct usb_serial_port *port)
696{
697 int i;
698 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
699
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800700 for (i = 0; i < portdata->num_in_urbs; i++)
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100701 usb_kill_urb(portdata->in_urbs[i]);
702
703 usb_kill_urb(port->interrupt_in_urb);
704}
705
706static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
707{
708 int ok_cnt;
709 int err = -EINVAL;
710 int i;
711 struct urb *urb;
712 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
713
714 ok_cnt = 0;
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800715 for (i = 0; i < portdata->num_in_urbs; i++) {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100716 urb = portdata->in_urbs[i];
717 if (!urb)
718 continue;
719 err = usb_submit_urb(urb, mem_flags);
720 if (err) {
721 dev_err(&port->dev, "%s: submit urb failed: %d\n",
722 __func__, err);
723 } else {
724 ok_cnt++;
725 }
726 }
727
728 if (ok_cnt && port->interrupt_in_urb) {
729 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
730 if (err) {
731 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
732 __func__, err);
733 }
734 }
735
736 if (ok_cnt > 0) /* at least one rx urb submitted */
737 return 0;
738 else
739 return err;
740}
741
742static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
743 int dir, void *ctx, int len,
744 gfp_t mem_flags,
745 usb_complete_t callback)
746{
747 struct urb *urb;
748 u8 *buf;
749
750 if (endpoint == -1)
751 return NULL;
752
753 urb = usb_alloc_urb(0, mem_flags);
754 if (urb == NULL) {
755 dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n",
756 __func__, endpoint);
757 return NULL;
758 }
759
760 buf = kmalloc(len, mem_flags);
761 if (buf) {
762 /* Fill URB using supplied data */
763 usb_fill_bulk_urb(urb, serial->dev,
764 usb_sndbulkpipe(serial->dev, endpoint) | dir,
765 buf, len, callback, ctx);
766
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100767 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
768 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
769 } else {
770 dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__,
771 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
772
773 sierra_release_urb(urb);
774 urb = NULL;
775 }
776
777 return urb;
778}
779
780static void sierra_close(struct usb_serial_port *port)
781{
782 int i;
783 struct usb_serial *serial = port->serial;
784 struct sierra_port_private *portdata;
Oliver Neukume6929a92009-09-04 23:19:53 +0200785 struct sierra_intf_private *intfdata = port->serial->private;
786
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100787 portdata = usb_get_serial_port_data(port);
788
789 portdata->rts_state = 0;
790 portdata->dtr_state = 0;
791
792 if (serial->dev) {
793 mutex_lock(&serial->disc_mutex);
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700794 if (!serial->disconnected) {
795 serial->interface->needs_remote_wakeup = 0;
Oliver Neukum5b7c1172011-02-11 12:56:40 +0100796 /* odd error handling due to pm counters */
797 if (!usb_autopm_get_interface(serial->interface))
798 sierra_send_setup(port);
799 else
800 usb_autopm_get_interface_no_resume(serial->interface);
801
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700802 }
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100803 mutex_unlock(&serial->disc_mutex);
Oliver Neukume6929a92009-09-04 23:19:53 +0200804 spin_lock_irq(&intfdata->susp_lock);
805 portdata->opened = 0;
806 spin_unlock_irq(&intfdata->susp_lock);
807
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100808
809 /* Stop reading urbs */
810 sierra_stop_rx_urbs(port);
811 /* .. and release them */
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800812 for (i = 0; i < portdata->num_in_urbs; i++) {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100813 sierra_release_urb(portdata->in_urbs[i]);
814 portdata->in_urbs[i] = NULL;
815 }
816 }
817}
818
Alan Coxa509a7e2009-09-19 13:13:26 -0700819static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700820{
821 struct sierra_port_private *portdata;
822 struct usb_serial *serial = port->serial;
Oliver Neukume6929a92009-09-04 23:19:53 +0200823 struct sierra_intf_private *intfdata = serial->private;
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900824 int i;
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100825 int err;
826 int endpoint;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700827 struct urb *urb;
828
829 portdata = usb_get_serial_port_data(port);
830
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700831 /* Set some sane defaults */
832 portdata->rts_state = 1;
833 portdata->dtr_state = 1;
834
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700835
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100836 endpoint = port->bulk_in_endpointAddress;
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800837 for (i = 0; i < portdata->num_in_urbs; i++) {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100838 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
839 IN_BUFLEN, GFP_KERNEL,
840 sierra_indat_callback);
841 portdata->in_urbs[i] = urb;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700842 }
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100843 /* clear halt condition */
844 usb_clear_halt(serial->dev,
845 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700846
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100847 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
848 if (err) {
849 /* get rid of everything as in close */
850 sierra_close(port);
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700851 /* restore balance for autopm */
Oliver Neukum5b7c1172011-02-11 12:56:40 +0100852 if (!serial->disconnected)
853 usb_autopm_put_interface(serial->interface);
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100854 return err;
855 }
Alan Cox335f8512009-06-11 12:26:29 +0100856 sierra_send_setup(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700857
Oliver Neukume6929a92009-09-04 23:19:53 +0200858 serial->interface->needs_remote_wakeup = 1;
859 spin_lock_irq(&intfdata->susp_lock);
860 portdata->opened = 1;
861 spin_unlock_irq(&intfdata->susp_lock);
862 usb_autopm_put_interface(serial->interface);
863
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900864 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700865}
866
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100867
Alan Cox335f8512009-06-11 12:26:29 +0100868static void sierra_dtr_rts(struct usb_serial_port *port, int on)
869{
870 struct usb_serial *serial = port->serial;
871 struct sierra_port_private *portdata;
872
873 portdata = usb_get_serial_port_data(port);
874 portdata->rts_state = on;
875 portdata->dtr_state = on;
876
877 if (serial->dev) {
878 mutex_lock(&serial->disc_mutex);
879 if (!serial->disconnected)
880 sierra_send_setup(port);
881 mutex_unlock(&serial->disc_mutex);
882 }
883}
884
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700885static int sierra_startup(struct usb_serial *serial)
886{
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700887 struct usb_serial_port *port;
888 struct sierra_port_private *portdata;
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800889 struct sierra_iface_info *himemoryp = NULL;
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900890 int i;
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800891 u8 ifnum;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700892
Kevin Lloyd228426e2008-01-10 11:11:04 -0800893 /* Set Device mode to D0 */
Kevin Lloyd112225b2007-07-16 13:49:27 -0700894 sierra_set_power_state(serial->dev, 0x0000);
895
Kevin Lloyd228426e2008-01-10 11:11:04 -0800896 /* Check NMEA and set */
897 if (nmea)
898 sierra_vsc_set_nmea(serial->dev, 1);
899
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700900 /* Now setup per port private data */
901 for (i = 0; i < serial->num_ports; i++) {
902 port = serial->port[i];
903 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
904 if (!portdata) {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700905 dev_dbg(&port->dev, "%s: kmalloc for "
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800906 "sierra_port_private (%d) failed!\n",
Kevin Lloyd7384a922008-09-16 21:05:24 -0700907 __func__, i);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900908 return -ENOMEM;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700909 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900910 spin_lock_init(&portdata->lock);
Oliver Neukume6929a92009-09-04 23:19:53 +0200911 init_usb_anchor(&portdata->active);
912 init_usb_anchor(&portdata->delayed);
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800913 ifnum = i;
914 /* Assume low memory requirements */
915 portdata->num_out_urbs = N_OUT_URB;
916 portdata->num_in_urbs = N_IN_URB;
917
918 /* Determine actual memory requirements */
919 if (serial->num_ports == 1) {
920 /* Get interface number for composite device */
921 ifnum = sierra_calc_interface(serial);
922 himemoryp =
923 (struct sierra_iface_info *)&typeB_interface_list;
924 if (is_himemory(ifnum, himemoryp)) {
925 portdata->num_out_urbs = N_OUT_URB_HM;
926 portdata->num_in_urbs = N_IN_URB_HM;
927 }
928 }
929 else {
930 himemoryp =
931 (struct sierra_iface_info *)&typeA_interface_list;
932 if (is_himemory(i, himemoryp)) {
933 portdata->num_out_urbs = N_OUT_URB_HM;
934 portdata->num_in_urbs = N_IN_URB_HM;
935 }
936 }
937 dev_dbg(&serial->dev->dev,
938 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
939 ifnum,portdata->num_in_urbs, portdata->num_out_urbs );
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100940 /* Set the port private data pointer */
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700941 usb_set_serial_port_data(port, portdata);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700942 }
943
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900944 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700945}
946
Alan Stern7bae0a02009-07-07 09:50:14 -0400947static void sierra_release(struct usb_serial *serial)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700948{
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100949 int i;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700950 struct usb_serial_port *port;
951 struct sierra_port_private *portdata;
952
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700953 for (i = 0; i < serial->num_ports; ++i) {
954 port = serial->port[i];
Greg Kroah-Hartmanf094e4f2007-04-26 00:12:01 -0700955 if (!port)
956 continue;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700957 portdata = usb_get_serial_port_data(port);
Greg Kroah-Hartmanf094e4f2007-04-26 00:12:01 -0700958 if (!portdata)
959 continue;
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900960 kfree(portdata);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700961 }
962}
963
Andrew Mortoncd604512009-09-23 15:57:43 -0700964#ifdef CONFIG_PM
Oliver Neukume6929a92009-09-04 23:19:53 +0200965static void stop_read_write_urbs(struct usb_serial *serial)
966{
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700967 int i;
Oliver Neukume6929a92009-09-04 23:19:53 +0200968 struct usb_serial_port *port;
969 struct sierra_port_private *portdata;
970
971 /* Stop reading/writing urbs */
972 for (i = 0; i < serial->num_ports; ++i) {
973 port = serial->port[i];
974 portdata = usb_get_serial_port_data(port);
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700975 sierra_stop_rx_urbs(port);
Oliver Neukume6929a92009-09-04 23:19:53 +0200976 usb_kill_anchored_urbs(&portdata->active);
977 }
978}
979
980static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
981{
982 struct sierra_intf_private *intfdata;
983 int b;
984
Alan Stern5b1b0b82011-08-19 23:49:48 +0200985 if (PMSG_IS_AUTO(message)) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200986 intfdata = serial->private;
987 spin_lock_irq(&intfdata->susp_lock);
988 b = intfdata->in_flight;
989
990 if (b) {
991 spin_unlock_irq(&intfdata->susp_lock);
992 return -EBUSY;
993 } else {
994 intfdata->suspended = 1;
995 spin_unlock_irq(&intfdata->susp_lock);
996 }
997 }
998 stop_read_write_urbs(serial);
999
1000 return 0;
1001}
1002
1003static int sierra_resume(struct usb_serial *serial)
1004{
1005 struct usb_serial_port *port;
1006 struct sierra_intf_private *intfdata = serial->private;
1007 struct sierra_port_private *portdata;
1008 struct urb *urb;
1009 int ec = 0;
1010 int i, err;
1011
1012 spin_lock_irq(&intfdata->susp_lock);
1013 for (i = 0; i < serial->num_ports; i++) {
1014 port = serial->port[i];
1015 portdata = usb_get_serial_port_data(port);
1016
1017 while ((urb = usb_get_from_anchor(&portdata->delayed))) {
1018 usb_anchor_urb(urb, &portdata->active);
1019 intfdata->in_flight++;
1020 err = usb_submit_urb(urb, GFP_ATOMIC);
1021 if (err < 0) {
1022 intfdata->in_flight--;
1023 usb_unanchor_urb(urb);
1024 usb_scuttle_anchored_urbs(&portdata->delayed);
1025 break;
1026 }
1027 }
1028
1029 if (portdata->opened) {
1030 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1031 if (err)
1032 ec++;
1033 }
1034 }
1035 intfdata->suspended = 0;
1036 spin_unlock_irq(&intfdata->susp_lock);
1037
1038 return ec ? -EIO : 0;
1039}
Elina Pasheva7650cd92010-02-11 18:37:40 -08001040
Andrew Mortoncd604512009-09-23 15:57:43 -07001041#else
1042#define sierra_suspend NULL
1043#define sierra_resume NULL
1044#endif
Oliver Neukume6929a92009-09-04 23:19:53 +02001045
Kevin Lloyd228426e2008-01-10 11:11:04 -08001046static struct usb_serial_driver sierra_device = {
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001047 .driver = {
1048 .owner = THIS_MODULE,
Kevin Lloyd4e0fee82008-07-10 14:14:47 -07001049 .name = "sierra",
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001050 },
Kevin Lloyd228426e2008-01-10 11:11:04 -08001051 .description = "Sierra USB modem",
1052 .id_table = id_table,
Kevin Lloyd228426e2008-01-10 11:11:04 -08001053 .calc_num_ports = sierra_calc_num_ports,
1054 .probe = sierra_probe,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001055 .open = sierra_open,
1056 .close = sierra_close,
Alan Cox335f8512009-06-11 12:26:29 +01001057 .dtr_rts = sierra_dtr_rts,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001058 .write = sierra_write,
1059 .write_room = sierra_write_room,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001060 .set_termios = sierra_set_termios,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001061 .tiocmget = sierra_tiocmget,
1062 .tiocmset = sierra_tiocmset,
1063 .attach = sierra_startup,
Alan Stern7bae0a02009-07-07 09:50:14 -04001064 .release = sierra_release,
Oliver Neukume6929a92009-09-04 23:19:53 +02001065 .suspend = sierra_suspend,
1066 .resume = sierra_resume,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001067 .read_int_callback = sierra_instat_callback,
1068};
1069
Alan Sternd8603222012-02-23 14:57:25 -05001070static struct usb_serial_driver * const serial_drivers[] = {
1071 &sierra_device, NULL
1072};
1073
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -07001074module_usb_serial_driver(serial_drivers, id_table);
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001075
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07001076MODULE_AUTHOR(DRIVER_AUTHOR);
1077MODULE_DESCRIPTION(DRIVER_DESC);
1078MODULE_VERSION(DRIVER_VERSION);
Kevin Lloyd69de51f2006-06-30 11:17:55 -07001079MODULE_LICENSE("GPL");
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07001080
Kevin Lloyd4e0fee82008-07-10 14:14:47 -07001081module_param(nmea, bool, S_IRUGO | S_IWUSR);
Kevin Lloyd228426e2008-01-10 11:11:04 -08001082MODULE_PARM_DESC(nmea, "NMEA streaming");