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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 */
Johan Hovoldbcbec052012-10-31 11:59:52 +010021
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;
Johan Hovold80cc0fc2014-05-26 19:22:54 +020061 unsigned int open_ports;
Oliver Neukume6929a92009-09-04 23:19:53 +020062};
63
Adrian Bunk82a24e62007-07-29 16:59:02 +020064static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
Kevin Lloyd112225b2007-07-16 13:49:27 -070065{
Greg Kroah-Hartman64318a52012-05-03 16:44:48 -070066 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
Kevin Lloyd228426e2008-01-10 11:11:04 -080067 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
Kevin Lloydf3564de2008-03-28 10:05:08 -070068 USB_TYPE_VENDOR, /* __u8 request type */
Kevin Lloyd228426e2008-01-10 11:11:04 -080069 swiState, /* __u16 value */
70 0, /* __u16 index */
71 NULL, /* void *data */
72 0, /* __u16 size */
73 USB_CTRL_SET_TIMEOUT); /* int timeout */
Kevin Lloyd112225b2007-07-16 13:49:27 -070074}
75
Kevin Lloyd228426e2008-01-10 11:11:04 -080076static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
Kevin Lloyd112225b2007-07-16 13:49:27 -070077{
Greg Kroah-Hartman64318a52012-05-03 16:44:48 -070078 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
Kevin Lloyd228426e2008-01-10 11:11:04 -080079 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
Kevin Lloydf3564de2008-03-28 10:05:08 -070080 USB_TYPE_VENDOR, /* __u8 request type */
Kevin Lloyd228426e2008-01-10 11:11:04 -080081 enable, /* __u16 value */
82 0x0000, /* __u16 index */
83 NULL, /* void *data */
84 0, /* __u16 size */
85 USB_CTRL_SET_TIMEOUT); /* int timeout */
Kevin Lloyd228426e2008-01-10 11:11:04 -080086}
Kevin Lloyd112225b2007-07-16 13:49:27 -070087
Kevin Lloyd228426e2008-01-10 11:11:04 -080088static int sierra_calc_num_ports(struct usb_serial *serial)
89{
Elina Pasheva9636b682009-05-12 13:12:54 -070090 int num_ports = 0;
91 u8 ifnum, numendpoints;
92
Elina Pasheva9636b682009-05-12 13:12:54 -070093 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
94 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
Kevin Lloyd228426e2008-01-10 11:11:04 -080095
Elina Pasheva9636b682009-05-12 13:12:54 -070096 /* Dummy interface present on some SKUs should be ignored */
97 if (ifnum == 0x99)
98 num_ports = 0;
99 else if (numendpoints <= 3)
100 num_ports = 1;
101 else
102 num_ports = (numendpoints-1)/2;
103 return num_ports;
Kevin Lloyd228426e2008-01-10 11:11:04 -0800104}
105
Elina Pasheva4db22992009-06-11 14:32:01 +0100106static int is_blacklisted(const u8 ifnum,
107 const struct sierra_iface_info *blacklist)
108{
109 const u8 *info;
110 int i;
111
112 if (blacklist) {
113 info = blacklist->ifaceinfo;
114
115 for (i = 0; i < blacklist->infolen; i++) {
116 if (info[i] == ifnum)
117 return 1;
118 }
119 }
120 return 0;
121}
122
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800123static int is_himemory(const u8 ifnum,
124 const struct sierra_iface_info *himemorylist)
125{
126 const u8 *info;
127 int i;
128
129 if (himemorylist) {
130 info = himemorylist->ifaceinfo;
131
132 for (i=0; i < himemorylist->infolen; i++) {
133 if (info[i] == ifnum)
134 return 1;
135 }
136 }
137 return 0;
138}
139
Kevin Lloyd71069672008-04-02 11:24:56 -0700140static int sierra_calc_interface(struct usb_serial *serial)
141{
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700142 int interface;
143 struct usb_interface *p_interface;
144 struct usb_host_interface *p_host_interface;
Kevin Lloyd71069672008-04-02 11:24:56 -0700145
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700146 /* Get the interface structure pointer from the serial struct */
147 p_interface = serial->interface;
Kevin Lloyd71069672008-04-02 11:24:56 -0700148
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700149 /* Get a pointer to the host interface structure */
150 p_host_interface = p_interface->cur_altsetting;
Kevin Lloyd71069672008-04-02 11:24:56 -0700151
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700152 /* read the interface descriptor for this active altsetting
153 * to find out the interface number we are on
154 */
155 interface = p_host_interface->desc.bInterfaceNumber;
Kevin Lloyd71069672008-04-02 11:24:56 -0700156
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700157 return interface;
Kevin Lloyd71069672008-04-02 11:24:56 -0700158}
159
Kevin Lloyd228426e2008-01-10 11:11:04 -0800160static int sierra_probe(struct usb_serial *serial,
161 const struct usb_device_id *id)
162{
163 int result = 0;
164 struct usb_device *udev;
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
Kevin Lloyd228426e2008-01-10 11:11:04 -0800191 return result;
Kevin Lloyd112225b2007-07-16 13:49:27 -0700192}
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700193
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800194/* interfaces with higher memory requirements */
195static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
196static const struct sierra_iface_info typeA_interface_list = {
197 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
198 .ifaceinfo = hi_memory_typeA_ifaces,
199};
200
201static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
202static const struct sierra_iface_info typeB_interface_list = {
203 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
204 .ifaceinfo = hi_memory_typeB_ifaces,
205};
206
207/* 'blacklist' of interfaces not served by this driver */
Bjørn Mork749541d12012-04-17 21:37:29 +0200208static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
Elina Pasheva4db22992009-06-11 14:32:01 +0100209static const struct sierra_iface_info direct_ip_interface_blacklist = {
210 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
211 .ifaceinfo = direct_ip_non_serial_ifaces,
212};
213
Németh Márton7d40d7e2010-01-10 15:34:24 +0100214static const struct usb_device_id id_table[] = {
Elina Pashevac5f3d872009-07-09 17:55:18 -0700215 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
216 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
William Lightningcfbaa392010-03-26 10:51:20 -0700217 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700218 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
219
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700220 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800221 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
Greg Kroah-Hartman90ac3c82002-04-09 12:14:34 -0700222 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800223 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
agilmore@wirelessbeehive.comb9e13ac2007-12-04 11:37:12 -0700224 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700225 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
226 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
227 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800228 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
229 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700230 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700231 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
august huber9d72c812010-06-28 11:46:05 -0700232 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700233 /* Sierra Wireless C597 */
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700234 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
Elina Pashevac5f3d872009-07-09 17:55:18 -0700235 /* Sierra Wireless T598 */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700236 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
Elina Pashevac5f3d872009-07-09 17:55:18 -0700237 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
238 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
239 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
240 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700241
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700242 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
243 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700244 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
245 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
246 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
247 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700248 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700249 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
Kevin Lloyd7f170a62008-03-14 00:53:24 -0700250 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700251 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700252 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
Kevin Lloyd71069672008-04-02 11:24:56 -0700253 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700254 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
Kevin Lloyd4e0fee82008-07-10 14:14:47 -0700255 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
256 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
Elina Pashevac5f3d872009-07-09 17:55:18 -0700257 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
258 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
259 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
260 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
Kevin Lloydb77a5c72008-09-17 09:03:38 -0700261 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700262 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
Elina Pasheva4db22992009-06-11 14:32:01 +0100263 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
264 { USB_DEVICE(0x1199, 0x683C) },
265 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
266 /* Sierra Wireless MC8790, MC8791, MC8792 */
267 { USB_DEVICE(0x1199, 0x683E) },
Kevin Lloyd9454c462007-07-16 13:49:29 -0700268 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
269 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
270 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
271 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
Kevin Lloyd6835b322008-01-10 11:11:04 -0800272 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
Jessica L. Blank62aad3a2007-12-30 20:11:35 -0600273 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700274 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
275 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
276 /* Sierra Wireless C885 */
277 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700278 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700279 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700280 /* Sierra Wireless C22/C33 */
Kevin Lloyd73b2c202008-08-25 19:20:40 -0700281 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700282 /* Sierra Wireless HSPA Non-Composite Device */
Kevin Lloyde3173b22008-07-10 14:14:51 -0700283 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
Elina Pashevac5f3d872009-07-09 17:55:18 -0700284 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
Bjørn Mork049255f2014-08-28 14:11:23 +0200285 /* Sierra Wireless Direct IP modems */
286 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF),
Elina Pasheva4db22992009-06-11 14:32:01 +0100287 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
288 },
Bjørn Mork5b3da692014-08-28 15:08:16 +0200289 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
290 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
291 },
Dirk Behme74472232015-07-27 08:56:05 +0200292 { USB_DEVICE(0x1199, 0x68AB) }, /* Sierra Wireless AR8550 */
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 },
Bjørn Mork049255f2014-08-28 14:11:23 +0200297 /* Airprime/Sierra Wireless Direct IP modems */
298 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF),
Jon Thomase1dc5152011-02-16 11:02:34 -0500299 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
300 },
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;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700325};
326
Alan Cox335f8512009-06-11 12:26:29 +0100327static int sierra_send_setup(struct usb_serial_port *port)
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700328{
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700329 struct usb_serial *serial = port->serial;
330 struct sierra_port_private *portdata;
Kevin Lloyd228426e2008-01-10 11:11:04 -0800331 __u16 interface = 0;
Alan Cox335f8512009-06-11 12:26:29 +0100332 int val = 0;
Elina Pasheva3c77d512009-10-16 12:04:54 -0700333 int do_send = 0;
334 int retval;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700335
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700336 portdata = usb_get_serial_port_data(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700337
Alan Cox335f8512009-06-11 12:26:29 +0100338 if (portdata->dtr_state)
339 val |= 0x01;
340 if (portdata->rts_state)
341 val |= 0x02;
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -0700342
Alan Cox335f8512009-06-11 12:26:29 +0100343 /* If composite device then properly report interface */
Alan Cox00b040d2009-06-11 14:29:29 +0100344 if (serial->num_ports == 1) {
Alan Cox335f8512009-06-11 12:26:29 +0100345 interface = sierra_calc_interface(serial);
Alan Cox00b040d2009-06-11 14:29:29 +0100346 /* Control message is sent only to interfaces with
347 * interrupt_in endpoints
348 */
349 if (port->interrupt_in_urb) {
350 /* send control message */
Elina Pasheva3c77d512009-10-16 12:04:54 -0700351 do_send = 1;
Alan Cox00b040d2009-06-11 14:29:29 +0100352 }
353 }
Kevin Lloyde3173b22008-07-10 14:14:51 -0700354
Alan Cox335f8512009-06-11 12:26:29 +0100355 /* Otherwise the need to do non-composite mapping */
356 else {
357 if (port->bulk_out_endpointAddress == 2)
358 interface = 0;
359 else if (port->bulk_out_endpointAddress == 4)
360 interface = 1;
361 else if (port->bulk_out_endpointAddress == 5)
362 interface = 2;
Elina Pasheva3c77d512009-10-16 12:04:54 -0700363
364 do_send = 1;
Alan Cox00b040d2009-06-11 14:29:29 +0100365 }
Elina Pasheva3c77d512009-10-16 12:04:54 -0700366 if (!do_send)
367 return 0;
368
Oliver Neukum5b7c1172011-02-11 12:56:40 +0100369 retval = usb_autopm_get_interface(serial->interface);
370 if (retval < 0)
371 return retval;
372
Johan Hovoldd3048892014-05-26 19:22:58 +0200373 retval = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
Elina Pasheva3c77d512009-10-16 12:04:54 -0700374 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
375 usb_autopm_put_interface(serial->interface);
376
377 return retval;
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700378}
379
Alan Cox60b33c12011-02-14 16:26:14 +0000380static int sierra_tiocmget(struct tty_struct *tty)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700381{
Alan Cox95da3102008-07-22 11:09:07 +0100382 struct usb_serial_port *port = tty->driver_data;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700383 unsigned int value;
384 struct sierra_port_private *portdata;
385
386 portdata = usb_get_serial_port_data(port);
387
388 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
389 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
390 ((portdata->cts_state) ? TIOCM_CTS : 0) |
391 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
392 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
393 ((portdata->ri_state) ? TIOCM_RNG : 0);
394
395 return value;
396}
397
Alan Cox20b9d172011-02-14 16:26:50 +0000398static int sierra_tiocmset(struct tty_struct *tty,
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700399 unsigned int set, unsigned int clear)
400{
Alan Cox95da3102008-07-22 11:09:07 +0100401 struct usb_serial_port *port = tty->driver_data;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700402 struct sierra_port_private *portdata;
403
404 portdata = usb_get_serial_port_data(port);
405
406 if (set & TIOCM_RTS)
407 portdata->rts_state = 1;
408 if (set & TIOCM_DTR)
409 portdata->dtr_state = 1;
410
411 if (clear & TIOCM_RTS)
412 portdata->rts_state = 0;
413 if (clear & TIOCM_DTR)
414 portdata->dtr_state = 0;
Alan Cox335f8512009-06-11 12:26:29 +0100415 return sierra_send_setup(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700416}
417
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100418static void sierra_release_urb(struct urb *urb)
419{
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100420 if (urb) {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100421 kfree(urb->transfer_buffer);
422 usb_free_urb(urb);
423 }
424}
425
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900426static void sierra_outdat_callback(struct urb *urb)
427{
428 struct usb_serial_port *port = urb->context;
429 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
Oliver Neukume6929a92009-09-04 23:19:53 +0200430 struct sierra_intf_private *intfdata;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900431 int status = urb->status;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900432
Johan Hovold7c807822014-05-26 19:23:05 +0200433 intfdata = usb_get_serial_data(port->serial);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900434
435 /* free up the transfer buffer, as usb_free_urb() does not do this */
436 kfree(urb->transfer_buffer);
Oliver Neukume6929a92009-09-04 23:19:53 +0200437 usb_autopm_put_interface_async(port->serial->interface);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900438 if (status)
Kevin Lloyd7384a922008-09-16 21:05:24 -0700439 dev_dbg(&port->dev, "%s - nonzero write bulk status "
Elina Pasheva5d44b362009-04-27 18:41:52 -0700440 "received: %d\n", __func__, status);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900441
Oliver Neukume6929a92009-09-04 23:19:53 +0200442 spin_lock(&portdata->lock);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900443 --portdata->outstanding_urbs;
Oliver Neukume6929a92009-09-04 23:19:53 +0200444 spin_unlock(&portdata->lock);
445 spin_lock(&intfdata->susp_lock);
446 --intfdata->in_flight;
447 spin_unlock(&intfdata->susp_lock);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900448
449 usb_serial_port_softint(port);
450}
451
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700452/* Write */
Alan Cox95da3102008-07-22 11:09:07 +0100453static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
454 const unsigned char *buf, int count)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700455{
Julia Lawalla45a1e02010-01-16 16:59:51 +0100456 struct sierra_port_private *portdata;
Oliver Neukume6929a92009-09-04 23:19:53 +0200457 struct sierra_intf_private *intfdata;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900458 struct usb_serial *serial = port->serial;
459 unsigned long flags;
460 unsigned char *buffer;
461 struct urb *urb;
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700462 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
463 int retval = 0;
464
465 /* verify that we actually have some data to write */
466 if (count == 0)
467 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700468
469 portdata = usb_get_serial_port_data(port);
Johan Hovold7c807822014-05-26 19:23:05 +0200470 intfdata = usb_get_serial_data(serial);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700471
Andrew Morton0b103952009-05-12 15:27:59 -0700472 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900473 spin_lock_irqsave(&portdata->lock, flags);
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700474 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
475 portdata->outstanding_urbs);
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800476 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900477 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd7384a922008-09-16 21:05:24 -0700478 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900479 return 0;
480 }
481 portdata->outstanding_urbs++;
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700482 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
483 portdata->outstanding_urbs);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900484 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700485
Oliver Neukume6929a92009-09-04 23:19:53 +0200486 retval = usb_autopm_get_interface_async(serial->interface);
487 if (retval < 0) {
488 spin_lock_irqsave(&portdata->lock, flags);
489 portdata->outstanding_urbs--;
490 spin_unlock_irqrestore(&portdata->lock, flags);
491 goto error_simple;
492 }
493
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700494 buffer = kmalloc(writesize, GFP_ATOMIC);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900495 if (!buffer) {
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700496 retval = -ENOMEM;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900497 goto error_no_buffer;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700498 }
499
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900500 urb = usb_alloc_urb(0, GFP_ATOMIC);
501 if (!urb) {
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700502 retval = -ENOMEM;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900503 goto error_no_urb;
504 }
505
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700506 memcpy(buffer, buf, writesize);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900507
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100508 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900509
510 usb_fill_bulk_urb(urb, serial->dev,
511 usb_sndbulkpipe(serial->dev,
512 port->bulk_out_endpointAddress),
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700513 buffer, writesize, sierra_outdat_callback, port);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900514
Elina Pasheva238ebd12009-05-12 13:12:24 -0700515 /* Handle the need to send a zero length packet */
516 urb->transfer_flags |= URB_ZERO_PACKET;
517
Oliver Neukume6929a92009-09-04 23:19:53 +0200518 spin_lock_irqsave(&intfdata->susp_lock, flags);
519
520 if (intfdata->suspended) {
521 usb_anchor_urb(urb, &portdata->delayed);
522 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
523 goto skip_power;
524 } else {
525 usb_anchor_urb(urb, &portdata->active);
526 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900527 /* send it down the pipe */
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700528 retval = usb_submit_urb(urb, GFP_ATOMIC);
529 if (retval) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200530 usb_unanchor_urb(urb);
531 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900532 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700533 "with status = %d\n", __func__, retval);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900534 goto error;
Oliver Neukume6929a92009-09-04 23:19:53 +0200535 } else {
536 intfdata->in_flight++;
537 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900538 }
539
Oliver Neukume6929a92009-09-04 23:19:53 +0200540skip_power:
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900541 /* we are done with this urb, so let the host driver
542 * really free it when it is finished with it */
543 usb_free_urb(urb);
544
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700545 return writesize;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900546error:
547 usb_free_urb(urb);
548error_no_urb:
549 kfree(buffer);
550error_no_buffer:
551 spin_lock_irqsave(&portdata->lock, flags);
552 --portdata->outstanding_urbs;
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700553 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
554 portdata->outstanding_urbs);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900555 spin_unlock_irqrestore(&portdata->lock, flags);
Oliver Neukume6929a92009-09-04 23:19:53 +0200556 usb_autopm_put_interface_async(serial->interface);
557error_simple:
Elina Pasheva40d2ff32009-04-29 10:26:46 -0700558 return retval;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700559}
560
561static void sierra_indat_callback(struct urb *urb)
562{
563 int err;
564 int endpoint;
565 struct usb_serial_port *port;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700566 unsigned char *data = urb->transfer_buffer;
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700567 int status = urb->status;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700568
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700569 endpoint = usb_pipeendpoint(urb->pipe);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700570 port = urb->context;
571
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700572 if (status) {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700573 dev_dbg(&port->dev, "%s: nonzero status: %d on"
Elina Pasheva5d44b362009-04-27 18:41:52 -0700574 " endpoint %02x\n", __func__, status, endpoint);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700575 } else {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700576 if (urb->actual_length) {
Jiri Slaby2e124b42013-01-03 15:53:06 +0100577 tty_insert_flip_string(&port->port, data,
578 urb->actual_length);
579 tty_flip_buffer_push(&port->port);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700580
Jiri Slaby2e124b42013-01-03 15:53:06 +0100581 usb_serial_debug_data(&port->dev, __func__,
582 urb->actual_length, data);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700583 } else {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700584 dev_dbg(&port->dev, "%s: empty read urb"
Elina Pasheva5d44b362009-04-27 18:41:52 -0700585 " received\n", __func__);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700586 }
587 }
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700588
589 /* Resubmit urb so we continue receiving */
Alan Stern1f871582010-02-17 10:05:47 -0500590 if (status != -ESHUTDOWN && status != -EPERM) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200591 usb_mark_last_busy(port->serial->dev);
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700592 err = usb_submit_urb(urb, GFP_ATOMIC);
Alan Stern1f871582010-02-17 10:05:47 -0500593 if (err && err != -EPERM)
Elina Pashevab0cda8c2009-04-29 10:29:21 -0700594 dev_err(&port->dev, "resubmit read urb failed."
595 "(%d)\n", err);
596 }
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700597}
598
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700599static void sierra_instat_callback(struct urb *urb)
600{
601 int err;
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700602 int status = urb->status;
Ming Leicdc97792008-02-24 18:41:47 +0800603 struct usb_serial_port *port = urb->context;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700604 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
605 struct usb_serial *serial = port->serial;
606
Elina Pasheva5d44b362009-04-27 18:41:52 -0700607 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
Kevin Lloyd7384a922008-09-16 21:05:24 -0700608 urb, port, portdata);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700609
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700610 if (status == 0) {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700611 struct usb_ctrlrequest *req_pkt =
612 (struct usb_ctrlrequest *)urb->transfer_buffer;
613
614 if (!req_pkt) {
Kevin Lloyd7384a922008-09-16 21:05:24 -0700615 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
616 __func__);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700617 return;
618 }
619 if ((req_pkt->bRequestType == 0xA1) &&
620 (req_pkt->bRequest == 0x20)) {
621 int old_dcd_state;
622 unsigned char signals = *((unsigned char *)
623 urb->transfer_buffer +
624 sizeof(struct usb_ctrlrequest));
625
Elina Pasheva5d44b362009-04-27 18:41:52 -0700626 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
Kevin Lloyd7384a922008-09-16 21:05:24 -0700627 signals);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700628
629 old_dcd_state = portdata->dcd_state;
630 portdata->cts_state = 1;
631 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
632 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
633 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
634
Jiri Slabyaa27a092013-03-07 13:12:30 +0100635 if (old_dcd_state && !portdata->dcd_state)
636 tty_port_tty_hangup(&port->port, true);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700637 } else {
Elina Pasheva5d44b362009-04-27 18:41:52 -0700638 dev_dbg(&port->dev, "%s: type %x req %x\n",
Kevin Lloyd7384a922008-09-16 21:05:24 -0700639 __func__, req_pkt->bRequestType,
640 req_pkt->bRequest);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700641 }
642 } else
Elina Pasheva5d44b362009-04-27 18:41:52 -0700643 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700644
645 /* Resubmit urb so we continue receiving IRQ data */
Alan Stern1f871582010-02-17 10:05:47 -0500646 if (status != -ESHUTDOWN && status != -ENOENT) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200647 usb_mark_last_busy(serial->dev);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700648 err = usb_submit_urb(urb, GFP_ATOMIC);
Alan Stern1f871582010-02-17 10:05:47 -0500649 if (err && err != -EPERM)
Elina Pashevac76a23d2009-05-12 13:12:37 -0700650 dev_err(&port->dev, "%s: resubmit intr urb "
651 "failed. (%d)\n", __func__, err);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700652 }
653}
654
Alan Cox95da3102008-07-22 11:09:07 +0100655static int sierra_write_room(struct tty_struct *tty)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700656{
Alan Cox95da3102008-07-22 11:09:07 +0100657 struct usb_serial_port *port = tty->driver_data;
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900658 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
659 unsigned long flags;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700660
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900661 /* try to give a good number back based on if we have any free urbs at
662 * this point in time */
663 spin_lock_irqsave(&portdata->lock, flags);
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800664 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900665 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd7384a922008-09-16 21:05:24 -0700666 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900667 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700668 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900669 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700670
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900671 return 2048;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700672}
673
Johan Hovold93670592014-05-26 19:22:55 +0200674static int sierra_chars_in_buffer(struct tty_struct *tty)
675{
676 struct usb_serial_port *port = tty->driver_data;
677 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
678 unsigned long flags;
679 int chars;
680
681 /* NOTE: This overcounts somewhat. */
682 spin_lock_irqsave(&portdata->lock, flags);
683 chars = portdata->outstanding_urbs * MAX_TRANSFER;
684 spin_unlock_irqrestore(&portdata->lock, flags);
685
686 dev_dbg(&port->dev, "%s - %d\n", __func__, chars);
687
688 return chars;
689}
690
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100691static void sierra_stop_rx_urbs(struct usb_serial_port *port)
692{
693 int i;
694 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
695
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800696 for (i = 0; i < portdata->num_in_urbs; i++)
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100697 usb_kill_urb(portdata->in_urbs[i]);
698
699 usb_kill_urb(port->interrupt_in_urb);
700}
701
702static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
703{
704 int ok_cnt;
705 int err = -EINVAL;
706 int i;
707 struct urb *urb;
708 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
709
710 ok_cnt = 0;
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800711 for (i = 0; i < portdata->num_in_urbs; i++) {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100712 urb = portdata->in_urbs[i];
713 if (!urb)
714 continue;
715 err = usb_submit_urb(urb, mem_flags);
716 if (err) {
717 dev_err(&port->dev, "%s: submit urb failed: %d\n",
718 __func__, err);
719 } else {
720 ok_cnt++;
721 }
722 }
723
724 if (ok_cnt && port->interrupt_in_urb) {
725 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
726 if (err) {
727 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
728 __func__, err);
729 }
730 }
731
732 if (ok_cnt > 0) /* at least one rx urb submitted */
733 return 0;
734 else
735 return err;
736}
737
738static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
739 int dir, void *ctx, int len,
740 gfp_t mem_flags,
741 usb_complete_t callback)
742{
743 struct urb *urb;
744 u8 *buf;
745
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100746 urb = usb_alloc_urb(0, mem_flags);
Johan Hovold10c642d2013-12-29 19:22:56 +0100747 if (!urb)
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100748 return NULL;
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100749
750 buf = kmalloc(len, mem_flags);
751 if (buf) {
752 /* Fill URB using supplied data */
753 usb_fill_bulk_urb(urb, serial->dev,
754 usb_sndbulkpipe(serial->dev, endpoint) | dir,
755 buf, len, callback, ctx);
756
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100757 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
758 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
759 } else {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100760 sierra_release_urb(urb);
761 urb = NULL;
762 }
763
764 return urb;
765}
766
767static void sierra_close(struct usb_serial_port *port)
768{
769 int i;
770 struct usb_serial *serial = port->serial;
771 struct sierra_port_private *portdata;
Johan Hovold7c807822014-05-26 19:23:05 +0200772 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
Johan Hovold014333f2014-05-26 19:22:53 +0200773 struct urb *urb;
Oliver Neukume6929a92009-09-04 23:19:53 +0200774
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100775 portdata = usb_get_serial_port_data(port);
776
Johan Hovoldc2e45d72014-05-26 19:23:09 +0200777 /*
778 * Need to take susp_lock to make sure port is not already being
Peter Hurleyd41861c2016-04-09 17:53:25 -0700779 * resumed, but no need to hold it due to initialized
Johan Hovoldc2e45d72014-05-26 19:23:09 +0200780 */
Johan Hovold9c210bf2013-03-21 12:36:36 +0100781 spin_lock_irq(&intfdata->susp_lock);
Johan Hovold80cc0fc2014-05-26 19:22:54 +0200782 if (--intfdata->open_ports == 0)
783 serial->interface->needs_remote_wakeup = 0;
Johan Hovold9c210bf2013-03-21 12:36:36 +0100784 spin_unlock_irq(&intfdata->susp_lock);
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100785
Johan Hovold014333f2014-05-26 19:22:53 +0200786 for (;;) {
787 urb = usb_get_from_anchor(&portdata->delayed);
788 if (!urb)
789 break;
790 kfree(urb->transfer_buffer);
791 usb_free_urb(urb);
792 usb_autopm_put_interface_async(serial->interface);
793 spin_lock(&portdata->lock);
794 portdata->outstanding_urbs--;
795 spin_unlock(&portdata->lock);
796 }
797
Johan Hovold9c210bf2013-03-21 12:36:36 +0100798 sierra_stop_rx_urbs(port);
Johan Hovoldc9d838a2014-05-26 19:22:56 +0200799 usb_kill_anchored_urbs(&portdata->active);
800
Johan Hovold9c210bf2013-03-21 12:36:36 +0100801 for (i = 0; i < portdata->num_in_urbs; i++) {
802 sierra_release_urb(portdata->in_urbs[i]);
803 portdata->in_urbs[i] = NULL;
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100804 }
Johan Hovold0287d5c2014-05-26 19:23:08 +0200805
806 usb_autopm_get_interface_no_resume(serial->interface);
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100807}
808
Alan Coxa509a7e2009-09-19 13:13:26 -0700809static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700810{
811 struct sierra_port_private *portdata;
812 struct usb_serial *serial = port->serial;
Johan Hovold7c807822014-05-26 19:23:05 +0200813 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900814 int i;
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100815 int err;
816 int endpoint;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700817 struct urb *urb;
818
819 portdata = usb_get_serial_port_data(port);
820
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100821 endpoint = port->bulk_in_endpointAddress;
Elina Pasheva3a2b8082009-11-04 10:25:48 -0800822 for (i = 0; i < portdata->num_in_urbs; i++) {
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100823 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
824 IN_BUFLEN, GFP_KERNEL,
825 sierra_indat_callback);
826 portdata->in_urbs[i] = urb;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700827 }
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100828 /* clear halt condition */
829 usb_clear_halt(serial->dev,
830 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700831
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100832 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
Johan Hovold353fe192014-05-26 19:22:50 +0200833 if (err)
834 goto err_submit;
835
Oliver Neukume6929a92009-09-04 23:19:53 +0200836 spin_lock_irq(&intfdata->susp_lock);
Johan Hovold80cc0fc2014-05-26 19:22:54 +0200837 if (++intfdata->open_ports == 1)
838 serial->interface->needs_remote_wakeup = 1;
Oliver Neukume6929a92009-09-04 23:19:53 +0200839 spin_unlock_irq(&intfdata->susp_lock);
840 usb_autopm_put_interface(serial->interface);
841
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900842 return 0;
Johan Hovold353fe192014-05-26 19:22:50 +0200843
844err_submit:
845 sierra_stop_rx_urbs(port);
846
847 for (i = 0; i < portdata->num_in_urbs; i++) {
848 sierra_release_urb(portdata->in_urbs[i]);
849 portdata->in_urbs[i] = NULL;
850 }
851
852 return err;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700853}
854
Elina Pashevab9a44bc12009-06-11 14:30:21 +0100855
Alan Cox335f8512009-06-11 12:26:29 +0100856static void sierra_dtr_rts(struct usb_serial_port *port, int on)
857{
Alan Cox335f8512009-06-11 12:26:29 +0100858 struct sierra_port_private *portdata;
859
860 portdata = usb_get_serial_port_data(port);
861 portdata->rts_state = on;
862 portdata->dtr_state = on;
863
Johan Hovoldb2ca6992013-02-13 17:53:28 +0100864 sierra_send_setup(port);
Alan Cox335f8512009-06-11 12:26:29 +0100865}
866
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700867static int sierra_startup(struct usb_serial *serial)
868{
Johan Hovold084817d2012-10-25 10:29:18 +0200869 struct sierra_intf_private *intfdata;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700870
Johan Hovold084817d2012-10-25 10:29:18 +0200871 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
872 if (!intfdata)
873 return -ENOMEM;
874
875 spin_lock_init(&intfdata->susp_lock);
876
877 usb_set_serial_data(serial, intfdata);
878
Kevin Lloyd228426e2008-01-10 11:11:04 -0800879 /* Set Device mode to D0 */
Kevin Lloyd112225b2007-07-16 13:49:27 -0700880 sierra_set_power_state(serial->dev, 0x0000);
881
Kevin Lloyd228426e2008-01-10 11:11:04 -0800882 /* Check NMEA and set */
883 if (nmea)
884 sierra_vsc_set_nmea(serial->dev, 1);
885
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900886 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700887}
888
Alan Stern7bae0a02009-07-07 09:50:14 -0400889static void sierra_release(struct usb_serial *serial)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700890{
Johan Hovoldf525c052012-10-25 10:29:19 +0200891 struct sierra_intf_private *intfdata;
892
893 intfdata = usb_get_serial_data(serial);
894 kfree(intfdata);
895}
896
897static int sierra_port_probe(struct usb_serial_port *port)
898{
899 struct usb_serial *serial = port->serial;
900 struct sierra_port_private *portdata;
901 const struct sierra_iface_info *himemoryp;
902 u8 ifnum;
903
904 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
905 if (!portdata)
906 return -ENOMEM;
907
908 spin_lock_init(&portdata->lock);
909 init_usb_anchor(&portdata->active);
910 init_usb_anchor(&portdata->delayed);
911
912 /* Assume low memory requirements */
913 portdata->num_out_urbs = N_OUT_URB;
914 portdata->num_in_urbs = N_IN_URB;
915
916 /* Determine actual memory requirements */
917 if (serial->num_ports == 1) {
918 /* Get interface number for composite device */
919 ifnum = sierra_calc_interface(serial);
920 himemoryp = &typeB_interface_list;
921 } else {
922 /* This is really the usb-serial port number of the interface
923 * rather than the interface number.
924 */
Greg Kroah-Hartman11438322013-06-06 10:32:00 -0700925 ifnum = port->port_number;
Johan Hovoldf525c052012-10-25 10:29:19 +0200926 himemoryp = &typeA_interface_list;
927 }
928
929 if (is_himemory(ifnum, himemoryp)) {
930 portdata->num_out_urbs = N_OUT_URB_HM;
931 portdata->num_in_urbs = N_IN_URB_HM;
932 }
933
934 dev_dbg(&port->dev,
935 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
936 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
937
938 usb_set_serial_port_data(port, portdata);
939
940 return 0;
941}
942
943static int sierra_port_remove(struct usb_serial_port *port)
944{
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700945 struct sierra_port_private *portdata;
946
Johan Hovoldf525c052012-10-25 10:29:19 +0200947 portdata = usb_get_serial_port_data(port);
Johan Hovold84527272014-05-26 19:22:51 +0200948 usb_set_serial_port_data(port, NULL);
Johan Hovoldf525c052012-10-25 10:29:19 +0200949 kfree(portdata);
950
951 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700952}
953
Andrew Mortoncd604512009-09-23 15:57:43 -0700954#ifdef CONFIG_PM
Oliver Neukume6929a92009-09-04 23:19:53 +0200955static void stop_read_write_urbs(struct usb_serial *serial)
956{
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700957 int i;
Oliver Neukume6929a92009-09-04 23:19:53 +0200958 struct usb_serial_port *port;
959 struct sierra_port_private *portdata;
960
961 /* Stop reading/writing urbs */
962 for (i = 0; i < serial->num_ports; ++i) {
963 port = serial->port[i];
964 portdata = usb_get_serial_port_data(port);
Johan Hovold84527272014-05-26 19:22:51 +0200965 if (!portdata)
966 continue;
Elina Pashevab64dc0a2009-10-27 13:49:59 -0700967 sierra_stop_rx_urbs(port);
Oliver Neukume6929a92009-09-04 23:19:53 +0200968 usb_kill_anchored_urbs(&portdata->active);
969 }
970}
971
972static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
973{
Johan Hovold7d8825b2014-05-26 19:23:06 +0200974 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
Oliver Neukume6929a92009-09-04 23:19:53 +0200975
Johan Hovold7d8825b2014-05-26 19:23:06 +0200976 spin_lock_irq(&intfdata->susp_lock);
Alan Stern5b1b0b82011-08-19 23:49:48 +0200977 if (PMSG_IS_AUTO(message)) {
Johan Hovold7d8825b2014-05-26 19:23:06 +0200978 if (intfdata->in_flight) {
Oliver Neukume6929a92009-09-04 23:19:53 +0200979 spin_unlock_irq(&intfdata->susp_lock);
980 return -EBUSY;
Oliver Neukume6929a92009-09-04 23:19:53 +0200981 }
982 }
Johan Hovold7d8825b2014-05-26 19:23:06 +0200983 intfdata->suspended = 1;
984 spin_unlock_irq(&intfdata->susp_lock);
985
Oliver Neukume6929a92009-09-04 23:19:53 +0200986 stop_read_write_urbs(serial);
987
988 return 0;
989}
990
Johan Hovold71c149b2014-05-26 19:23:07 +0200991/* Caller must hold susp_lock. */
992static int sierra_submit_delayed_urbs(struct usb_serial_port *port)
993{
994 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
995 struct sierra_intf_private *intfdata;
996 struct urb *urb;
997 int ec = 0;
998 int err;
999
1000 intfdata = usb_get_serial_data(port->serial);
1001
1002 for (;;) {
1003 urb = usb_get_from_anchor(&portdata->delayed);
1004 if (!urb)
1005 break;
1006
1007 usb_anchor_urb(urb, &portdata->active);
1008 intfdata->in_flight++;
1009 err = usb_submit_urb(urb, GFP_ATOMIC);
1010 if (err) {
1011 dev_err(&port->dev, "%s - submit urb failed: %d",
1012 __func__, err);
1013 ec++;
1014 intfdata->in_flight--;
1015 usb_unanchor_urb(urb);
1016 kfree(urb->transfer_buffer);
1017 usb_free_urb(urb);
1018
1019 spin_lock(&portdata->lock);
1020 portdata->outstanding_urbs--;
1021 spin_unlock(&portdata->lock);
1022 }
1023 }
1024
1025 if (ec)
1026 return -EIO;
1027
1028 return 0;
1029}
1030
Oliver Neukume6929a92009-09-04 23:19:53 +02001031static int sierra_resume(struct usb_serial *serial)
1032{
1033 struct usb_serial_port *port;
Johan Hovold7c807822014-05-26 19:23:05 +02001034 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
Oliver Neukume6929a92009-09-04 23:19:53 +02001035 int ec = 0;
1036 int i, err;
1037
1038 spin_lock_irq(&intfdata->susp_lock);
1039 for (i = 0; i < serial->num_ports; i++) {
1040 port = serial->port[i];
Oliver Neukume6929a92009-09-04 23:19:53 +02001041
Peter Hurleyd41861c2016-04-09 17:53:25 -07001042 if (!tty_port_initialized(&port->port))
Johan Hovold84527272014-05-26 19:22:51 +02001043 continue;
1044
Johan Hovold71c149b2014-05-26 19:23:07 +02001045 err = sierra_submit_delayed_urbs(port);
1046 if (err)
1047 ec++;
Oliver Neukume6929a92009-09-04 23:19:53 +02001048
Johan Hovolda283d082014-05-26 19:23:03 +02001049 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1050 if (err)
1051 ec++;
Oliver Neukume6929a92009-09-04 23:19:53 +02001052 }
1053 intfdata->suspended = 0;
1054 spin_unlock_irq(&intfdata->susp_lock);
1055
1056 return ec ? -EIO : 0;
1057}
Elina Pasheva7650cd92010-02-11 18:37:40 -08001058
Andrew Mortoncd604512009-09-23 15:57:43 -07001059#else
1060#define sierra_suspend NULL
1061#define sierra_resume NULL
1062#endif
Oliver Neukume6929a92009-09-04 23:19:53 +02001063
Kevin Lloyd228426e2008-01-10 11:11:04 -08001064static struct usb_serial_driver sierra_device = {
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001065 .driver = {
1066 .owner = THIS_MODULE,
Kevin Lloyd4e0fee82008-07-10 14:14:47 -07001067 .name = "sierra",
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001068 },
Kevin Lloyd228426e2008-01-10 11:11:04 -08001069 .description = "Sierra USB modem",
1070 .id_table = id_table,
Kevin Lloyd228426e2008-01-10 11:11:04 -08001071 .calc_num_ports = sierra_calc_num_ports,
1072 .probe = sierra_probe,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001073 .open = sierra_open,
1074 .close = sierra_close,
Alan Cox335f8512009-06-11 12:26:29 +01001075 .dtr_rts = sierra_dtr_rts,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001076 .write = sierra_write,
1077 .write_room = sierra_write_room,
Johan Hovold93670592014-05-26 19:22:55 +02001078 .chars_in_buffer = sierra_chars_in_buffer,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001079 .tiocmget = sierra_tiocmget,
1080 .tiocmset = sierra_tiocmset,
1081 .attach = sierra_startup,
Alan Stern7bae0a02009-07-07 09:50:14 -04001082 .release = sierra_release,
Johan Hovoldf525c052012-10-25 10:29:19 +02001083 .port_probe = sierra_port_probe,
1084 .port_remove = sierra_port_remove,
Oliver Neukume6929a92009-09-04 23:19:53 +02001085 .suspend = sierra_suspend,
1086 .resume = sierra_resume,
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001087 .read_int_callback = sierra_instat_callback,
1088};
1089
Alan Sternd8603222012-02-23 14:57:25 -05001090static struct usb_serial_driver * const serial_drivers[] = {
1091 &sierra_device, NULL
1092};
1093
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -07001094module_usb_serial_driver(serial_drivers, id_table);
Greg Kroah-Hartman964ee1d2006-10-17 10:17:58 -07001095
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07001096MODULE_AUTHOR(DRIVER_AUTHOR);
1097MODULE_DESCRIPTION(DRIVER_DESC);
Kevin Lloyd69de51f2006-06-30 11:17:55 -07001098MODULE_LICENSE("GPL");
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07001099
Kevin Lloyd4e0fee82008-07-10 14:14:47 -07001100module_param(nmea, bool, S_IRUGO | S_IWUSR);
Kevin Lloyd228426e2008-01-10 11:11:04 -08001101MODULE_PARM_DESC(nmea, "NMEA streaming");