Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1 | /* |
| 2 | * USB driver for Gigaset 307x base via direct USB connection. |
| 3 | * |
| 4 | * Copyright (c) 2001 by Hansjoerg Lipp <hjlipp@web.de>, |
| 5 | * Tilman Schmidt <tilman@imap.cc>, |
Tilman Schmidt | 70440cf | 2006-04-10 22:55:14 -0700 | [diff] [blame] | 6 | * Stefan Eilers. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 7 | * |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 8 | * ===================================================================== |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License as |
| 11 | * published by the Free Software Foundation; either version 2 of |
| 12 | * the License, or (at your option) any later version. |
| 13 | * ===================================================================== |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include "gigaset.h" |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 17 | #include <linux/usb.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/moduleparam.h> |
| 20 | |
| 21 | /* Version Information */ |
Tilman Schmidt | 70440cf | 2006-04-10 22:55:14 -0700 | [diff] [blame] | 22 | #define DRIVER_AUTHOR "Tilman Schmidt <tilman@imap.cc>, Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers" |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 23 | #define DRIVER_DESC "USB Driver for Gigaset 307x" |
| 24 | |
| 25 | |
| 26 | /* Module parameters */ |
| 27 | |
| 28 | static int startmode = SM_ISDN; |
| 29 | static int cidmode = 1; |
| 30 | |
| 31 | module_param(startmode, int, S_IRUGO); |
| 32 | module_param(cidmode, int, S_IRUGO); |
| 33 | MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); |
| 34 | MODULE_PARM_DESC(cidmode, "Call-ID mode"); |
| 35 | |
| 36 | #define GIGASET_MINORS 1 |
| 37 | #define GIGASET_MINOR 16 |
| 38 | #define GIGASET_MODULENAME "bas_gigaset" |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 39 | #define GIGASET_DEVNAME "ttyGB" |
| 40 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 41 | /* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */ |
| 42 | #define IF_WRITEBUF 264 |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 43 | |
Tilman Schmidt | 170ebf8 | 2009-03-18 23:44:23 -0700 | [diff] [blame] | 44 | /* interrupt pipe message size according to ibid. ch. 2.2 */ |
| 45 | #define IP_MSGSIZE 3 |
| 46 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 47 | /* Values for the Gigaset 307x */ |
| 48 | #define USB_GIGA_VENDOR_ID 0x0681 |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 49 | #define USB_3070_PRODUCT_ID 0x0001 |
| 50 | #define USB_3075_PRODUCT_ID 0x0002 |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 51 | #define USB_SX303_PRODUCT_ID 0x0021 |
| 52 | #define USB_SX353_PRODUCT_ID 0x0022 |
| 53 | |
| 54 | /* table of devices that work with this driver */ |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 55 | static const struct usb_device_id gigaset_table[] = { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 56 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_3070_PRODUCT_ID) }, |
| 57 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_3075_PRODUCT_ID) }, |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 58 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX303_PRODUCT_ID) }, |
| 59 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX353_PRODUCT_ID) }, |
| 60 | { } /* Terminating entry */ |
| 61 | }; |
| 62 | |
| 63 | MODULE_DEVICE_TABLE(usb, gigaset_table); |
| 64 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 65 | /*======================= local function prototypes ==========================*/ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 66 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 67 | /* function called if a new device belonging to this driver is connected */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 68 | static int gigaset_probe(struct usb_interface *interface, |
| 69 | const struct usb_device_id *id); |
| 70 | |
| 71 | /* Function will be called if the device is unplugged */ |
| 72 | static void gigaset_disconnect(struct usb_interface *interface); |
| 73 | |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 74 | /* functions called before/after suspend */ |
| 75 | static int gigaset_suspend(struct usb_interface *intf, pm_message_t message); |
| 76 | static int gigaset_resume(struct usb_interface *intf); |
| 77 | |
| 78 | /* functions called before/after device reset */ |
| 79 | static int gigaset_pre_reset(struct usb_interface *intf); |
| 80 | static int gigaset_post_reset(struct usb_interface *intf); |
| 81 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 82 | static int atread_submit(struct cardstate *, int); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 83 | static void stopurbs(struct bas_bc_state *); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 84 | static int req_submit(struct bc_state *, int, int, int); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 85 | static int atwrite_submit(struct cardstate *, unsigned char *, int); |
| 86 | static int start_cbsend(struct cardstate *); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 87 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 88 | /*============================================================================*/ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 89 | |
| 90 | struct bas_cardstate { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 91 | struct usb_device *udev; /* USB device pointer */ |
| 92 | struct usb_interface *interface; /* interface for this device */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 93 | unsigned char minor; /* starting minor number */ |
| 94 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 95 | struct urb *urb_ctrl; /* control pipe default URB */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 96 | struct usb_ctrlrequest dr_ctrl; |
| 97 | struct timer_list timer_ctrl; /* control request timeout */ |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 98 | int retry_ctrl; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 99 | |
| 100 | struct timer_list timer_atrdy; /* AT command ready timeout */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 101 | struct urb *urb_cmd_out; /* for sending AT commands */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 102 | struct usb_ctrlrequest dr_cmd_out; |
| 103 | int retry_cmd_out; |
| 104 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 105 | struct urb *urb_cmd_in; /* for receiving AT replies */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 106 | struct usb_ctrlrequest dr_cmd_in; |
| 107 | struct timer_list timer_cmd_in; /* receive request timeout */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 108 | unsigned char *rcvbuf; /* AT reply receive buffer */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 109 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 110 | struct urb *urb_int_in; /* URB for interrupt pipe */ |
Tilman Schmidt | 170ebf8 | 2009-03-18 23:44:23 -0700 | [diff] [blame] | 111 | unsigned char *int_in_buf; |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 112 | struct work_struct int_in_wq; /* for usb_clear_halt() */ |
| 113 | struct timer_list timer_int_in; /* int read retry delay */ |
| 114 | int retry_int_in; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 115 | |
| 116 | spinlock_t lock; /* locks all following */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 117 | int basstate; /* bitmap (BS_*) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 118 | int pending; /* uncompleted base request */ |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 119 | wait_queue_head_t waitqueue; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 120 | int rcvbuf_size; /* size of AT receive buffer */ |
| 121 | /* 0: no receive in progress */ |
| 122 | int retry_cmd_in; /* receive req retry count */ |
| 123 | }; |
| 124 | |
| 125 | /* status of direct USB connection to 307x base (bits in basstate) */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 126 | #define BS_ATOPEN 0x001 /* AT channel open */ |
| 127 | #define BS_B1OPEN 0x002 /* B channel 1 open */ |
| 128 | #define BS_B2OPEN 0x004 /* B channel 2 open */ |
| 129 | #define BS_ATREADY 0x008 /* base ready for AT command */ |
| 130 | #define BS_INIT 0x010 /* base has signalled INIT_OK */ |
| 131 | #define BS_ATTIMER 0x020 /* waiting for HD_READY_SEND_ATDATA */ |
| 132 | #define BS_ATRDPEND 0x040 /* urb_cmd_in in use */ |
| 133 | #define BS_ATWRPEND 0x080 /* urb_cmd_out in use */ |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 134 | #define BS_SUSPEND 0x100 /* USB port suspended */ |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 135 | #define BS_RESETTING 0x200 /* waiting for HD_RESET_INTERRUPT_PIPE_ACK */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 136 | |
| 137 | |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 138 | static struct gigaset_driver *driver; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 139 | |
| 140 | /* usb specific object needed to register this driver with the usb subsystem */ |
| 141 | static struct usb_driver gigaset_usb_driver = { |
| 142 | .name = GIGASET_MODULENAME, |
| 143 | .probe = gigaset_probe, |
| 144 | .disconnect = gigaset_disconnect, |
| 145 | .id_table = gigaset_table, |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 146 | .suspend = gigaset_suspend, |
| 147 | .resume = gigaset_resume, |
| 148 | .reset_resume = gigaset_post_reset, |
| 149 | .pre_reset = gigaset_pre_reset, |
| 150 | .post_reset = gigaset_post_reset, |
Sarah Sharp | e1f12eb | 2012-04-23 10:08:51 -0700 | [diff] [blame^] | 151 | .disable_hub_initiated_lpm = 1, |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 152 | }; |
| 153 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 154 | /* get message text for usb_submit_urb return code |
| 155 | */ |
| 156 | static char *get_usb_rcmsg(int rc) |
| 157 | { |
| 158 | static char unkmsg[28]; |
| 159 | |
| 160 | switch (rc) { |
| 161 | case 0: |
| 162 | return "success"; |
| 163 | case -ENOMEM: |
| 164 | return "out of memory"; |
| 165 | case -ENODEV: |
| 166 | return "device not present"; |
| 167 | case -ENOENT: |
| 168 | return "endpoint not present"; |
| 169 | case -ENXIO: |
| 170 | return "URB type not supported"; |
| 171 | case -EINVAL: |
| 172 | return "invalid argument"; |
| 173 | case -EAGAIN: |
| 174 | return "start frame too early or too much scheduled"; |
| 175 | case -EFBIG: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 176 | return "too many isoc frames requested"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 177 | case -EPIPE: |
| 178 | return "endpoint stalled"; |
| 179 | case -EMSGSIZE: |
| 180 | return "invalid packet size"; |
| 181 | case -ENOSPC: |
| 182 | return "would overcommit USB bandwidth"; |
| 183 | case -ESHUTDOWN: |
| 184 | return "device shut down"; |
| 185 | case -EPERM: |
| 186 | return "reject flag set"; |
| 187 | case -EHOSTUNREACH: |
| 188 | return "device suspended"; |
| 189 | default: |
| 190 | snprintf(unkmsg, sizeof(unkmsg), "unknown error %d", rc); |
| 191 | return unkmsg; |
| 192 | } |
| 193 | } |
| 194 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 195 | /* get message text for USB status code |
| 196 | */ |
| 197 | static char *get_usb_statmsg(int status) |
| 198 | { |
| 199 | static char unkmsg[28]; |
| 200 | |
| 201 | switch (status) { |
| 202 | case 0: |
| 203 | return "success"; |
| 204 | case -ENOENT: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 205 | return "unlinked (sync)"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 206 | case -EINPROGRESS: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 207 | return "URB still pending"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 208 | case -EPROTO: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 209 | return "bitstuff error, timeout, or unknown USB error"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 210 | case -EILSEQ: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 211 | return "CRC mismatch, timeout, or unknown USB error"; |
Pete Zaitcev | 38e2bfc | 2006-09-18 22:49:02 -0700 | [diff] [blame] | 212 | case -ETIME: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 213 | return "USB response timeout"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 214 | case -EPIPE: |
| 215 | return "endpoint stalled"; |
| 216 | case -ECOMM: |
| 217 | return "IN buffer overrun"; |
| 218 | case -ENOSR: |
| 219 | return "OUT buffer underrun"; |
| 220 | case -EOVERFLOW: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 221 | return "endpoint babble"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 222 | case -EREMOTEIO: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 223 | return "short packet"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 224 | case -ENODEV: |
| 225 | return "device removed"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 226 | case -EXDEV: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 227 | return "partial isoc transfer"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 228 | case -EINVAL: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 229 | return "ISO madness"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 230 | case -ECONNRESET: |
| 231 | return "unlinked (async)"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 232 | case -ESHUTDOWN: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 233 | return "device shut down"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 234 | default: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 235 | snprintf(unkmsg, sizeof(unkmsg), "unknown status %d", status); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 236 | return unkmsg; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | /* usb_pipetype_str |
| 241 | * retrieve string representation of USB pipe type |
| 242 | */ |
| 243 | static inline char *usb_pipetype_str(int pipe) |
| 244 | { |
| 245 | if (usb_pipeisoc(pipe)) |
| 246 | return "Isoc"; |
| 247 | if (usb_pipeint(pipe)) |
| 248 | return "Int"; |
| 249 | if (usb_pipecontrol(pipe)) |
| 250 | return "Ctrl"; |
| 251 | if (usb_pipebulk(pipe)) |
| 252 | return "Bulk"; |
| 253 | return "?"; |
| 254 | } |
| 255 | |
| 256 | /* dump_urb |
| 257 | * write content of URB to syslog for debugging |
| 258 | */ |
| 259 | static inline void dump_urb(enum debuglevel level, const char *tag, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 260 | struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 261 | { |
| 262 | #ifdef CONFIG_GIGASET_DEBUG |
| 263 | int i; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 264 | gig_dbg(level, "%s urb(0x%08lx)->{", tag, (unsigned long) urb); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 265 | if (urb) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 266 | gig_dbg(level, |
| 267 | " dev=0x%08lx, pipe=%s:EP%d/DV%d:%s, " |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 268 | "hcpriv=0x%08lx, transfer_flags=0x%x,", |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 269 | (unsigned long) urb->dev, |
| 270 | usb_pipetype_str(urb->pipe), |
| 271 | usb_pipeendpoint(urb->pipe), usb_pipedevice(urb->pipe), |
| 272 | usb_pipein(urb->pipe) ? "in" : "out", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 273 | (unsigned long) urb->hcpriv, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 274 | urb->transfer_flags); |
| 275 | gig_dbg(level, |
| 276 | " transfer_buffer=0x%08lx[%d], actual_length=%d, " |
Andrew Morton | 249b061 | 2007-02-10 01:46:49 -0800 | [diff] [blame] | 277 | "setup_packet=0x%08lx,", |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 278 | (unsigned long) urb->transfer_buffer, |
| 279 | urb->transfer_buffer_length, urb->actual_length, |
Andrew Morton | 249b061 | 2007-02-10 01:46:49 -0800 | [diff] [blame] | 280 | (unsigned long) urb->setup_packet); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 281 | gig_dbg(level, |
| 282 | " start_frame=%d, number_of_packets=%d, interval=%d, " |
| 283 | "error_count=%d,", |
| 284 | urb->start_frame, urb->number_of_packets, urb->interval, |
| 285 | urb->error_count); |
| 286 | gig_dbg(level, |
| 287 | " context=0x%08lx, complete=0x%08lx, " |
| 288 | "iso_frame_desc[]={", |
| 289 | (unsigned long) urb->context, |
| 290 | (unsigned long) urb->complete); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 291 | for (i = 0; i < urb->number_of_packets; i++) { |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 292 | struct usb_iso_packet_descriptor *pifd |
| 293 | = &urb->iso_frame_desc[i]; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 294 | gig_dbg(level, |
| 295 | " {offset=%u, length=%u, actual_length=%u, " |
| 296 | "status=%u}", |
| 297 | pifd->offset, pifd->length, pifd->actual_length, |
| 298 | pifd->status); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 299 | } |
| 300 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 301 | gig_dbg(level, "}}"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 302 | #endif |
| 303 | } |
| 304 | |
| 305 | /* read/set modem control bits etc. (m10x only) */ |
| 306 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 307 | unsigned new_state) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 308 | { |
| 309 | return -EINVAL; |
| 310 | } |
| 311 | |
| 312 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) |
| 313 | { |
| 314 | return -EINVAL; |
| 315 | } |
| 316 | |
| 317 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) |
| 318 | { |
| 319 | return -EINVAL; |
| 320 | } |
| 321 | |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 322 | /* set/clear bits in base connection state, return previous state |
| 323 | */ |
| 324 | static inline int update_basstate(struct bas_cardstate *ucs, |
| 325 | int set, int clear) |
| 326 | { |
| 327 | unsigned long flags; |
| 328 | int state; |
| 329 | |
| 330 | spin_lock_irqsave(&ucs->lock, flags); |
| 331 | state = ucs->basstate; |
| 332 | ucs->basstate = (state & ~clear) | set; |
| 333 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 334 | return state; |
| 335 | } |
| 336 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 337 | /* error_hangup |
| 338 | * hang up any existing connection because of an unrecoverable error |
| 339 | * This function may be called from any context and takes care of scheduling |
| 340 | * the necessary actions for execution outside of interrupt context. |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 341 | * cs->lock must not be held. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 342 | * argument: |
| 343 | * B channel control structure |
| 344 | */ |
| 345 | static inline void error_hangup(struct bc_state *bcs) |
| 346 | { |
| 347 | struct cardstate *cs = bcs->cs; |
| 348 | |
Tilman Schmidt | 1528b18 | 2010-02-22 13:09:52 +0000 | [diff] [blame] | 349 | gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 350 | gigaset_schedule_event(cs); |
| 351 | } |
| 352 | |
| 353 | /* error_reset |
| 354 | * reset Gigaset device because of an unrecoverable error |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 355 | * This function may be called from any context, and takes care of |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 356 | * scheduling the necessary actions for execution outside of interrupt context. |
Tilman Schmidt | 60798c68 | 2010-09-30 13:35:21 +0000 | [diff] [blame] | 357 | * cs->hw.bas->lock must not be held. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 358 | * argument: |
| 359 | * controller state structure |
| 360 | */ |
| 361 | static inline void error_reset(struct cardstate *cs) |
| 362 | { |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 363 | /* reset interrupt pipe to recover (ignore errors) */ |
| 364 | update_basstate(cs->hw.bas, BS_RESETTING, 0); |
Tilman Schmidt | 60798c68 | 2010-09-30 13:35:21 +0000 | [diff] [blame] | 365 | if (req_submit(cs->bcs, HD_RESET_INTERRUPT_PIPE, 0, BAS_TIMEOUT)) |
| 366 | /* submission failed, escalate to USB port reset */ |
| 367 | usb_queue_reset_device(cs->hw.bas->interface); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | /* check_pending |
| 371 | * check for completion of pending control request |
| 372 | * parameter: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 373 | * ucs hardware specific controller state structure |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 374 | */ |
| 375 | static void check_pending(struct bas_cardstate *ucs) |
| 376 | { |
| 377 | unsigned long flags; |
| 378 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 379 | spin_lock_irqsave(&ucs->lock, flags); |
| 380 | switch (ucs->pending) { |
| 381 | case 0: |
| 382 | break; |
| 383 | case HD_OPEN_ATCHANNEL: |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 384 | if (ucs->basstate & BS_ATOPEN) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 385 | ucs->pending = 0; |
| 386 | break; |
| 387 | case HD_OPEN_B1CHANNEL: |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 388 | if (ucs->basstate & BS_B1OPEN) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 389 | ucs->pending = 0; |
| 390 | break; |
| 391 | case HD_OPEN_B2CHANNEL: |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 392 | if (ucs->basstate & BS_B2OPEN) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 393 | ucs->pending = 0; |
| 394 | break; |
| 395 | case HD_CLOSE_ATCHANNEL: |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 396 | if (!(ucs->basstate & BS_ATOPEN)) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 397 | ucs->pending = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 398 | break; |
| 399 | case HD_CLOSE_B1CHANNEL: |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 400 | if (!(ucs->basstate & BS_B1OPEN)) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 401 | ucs->pending = 0; |
| 402 | break; |
| 403 | case HD_CLOSE_B2CHANNEL: |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 404 | if (!(ucs->basstate & BS_B2OPEN)) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 405 | ucs->pending = 0; |
| 406 | break; |
| 407 | case HD_DEVICE_INIT_ACK: /* no reply expected */ |
| 408 | ucs->pending = 0; |
| 409 | break; |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 410 | case HD_RESET_INTERRUPT_PIPE: |
| 411 | if (!(ucs->basstate & BS_RESETTING)) |
| 412 | ucs->pending = 0; |
| 413 | break; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 414 | /* |
| 415 | * HD_READ_ATMESSAGE and HD_WRITE_ATMESSAGE are handled separately |
| 416 | * and should never end up here |
| 417 | */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 418 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 419 | dev_warn(&ucs->interface->dev, |
| 420 | "unknown pending request 0x%02x cleared\n", |
| 421 | ucs->pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 422 | ucs->pending = 0; |
| 423 | } |
| 424 | |
| 425 | if (!ucs->pending) |
| 426 | del_timer(&ucs->timer_ctrl); |
| 427 | |
| 428 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 429 | } |
| 430 | |
| 431 | /* cmd_in_timeout |
| 432 | * timeout routine for command input request |
| 433 | * argument: |
| 434 | * controller state structure |
| 435 | */ |
| 436 | static void cmd_in_timeout(unsigned long data) |
| 437 | { |
| 438 | struct cardstate *cs = (struct cardstate *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 439 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 440 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 441 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 442 | if (!ucs->rcvbuf_size) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 443 | gig_dbg(DEBUG_USBREQ, "%s: no receive in progress", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 444 | return; |
| 445 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 446 | |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 447 | if (ucs->retry_cmd_in++ >= BAS_RETRY) { |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 448 | dev_err(cs->dev, |
| 449 | "control read: timeout, giving up after %d tries\n", |
| 450 | ucs->retry_cmd_in); |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 451 | kfree(ucs->rcvbuf); |
| 452 | ucs->rcvbuf = NULL; |
| 453 | ucs->rcvbuf_size = 0; |
| 454 | error_reset(cs); |
| 455 | return; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 456 | } |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 457 | |
| 458 | gig_dbg(DEBUG_USBREQ, "%s: timeout, retry %d", |
| 459 | __func__, ucs->retry_cmd_in); |
| 460 | rc = atread_submit(cs, BAS_TIMEOUT); |
| 461 | if (rc < 0) { |
| 462 | kfree(ucs->rcvbuf); |
| 463 | ucs->rcvbuf = NULL; |
| 464 | ucs->rcvbuf_size = 0; |
| 465 | if (rc != -ENODEV) |
| 466 | error_reset(cs); |
| 467 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 468 | } |
| 469 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 470 | /* read_ctrl_callback |
| 471 | * USB completion handler for control pipe input |
| 472 | * called by the USB subsystem in interrupt context |
| 473 | * parameter: |
| 474 | * urb USB request block |
| 475 | * urb->context = inbuf structure for controller state |
| 476 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 477 | static void read_ctrl_callback(struct urb *urb) |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 478 | { |
| 479 | struct inbuf_t *inbuf = urb->context; |
| 480 | struct cardstate *cs = inbuf->cs; |
| 481 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 482 | int status = urb->status; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 483 | unsigned numbytes; |
| 484 | int rc; |
| 485 | |
| 486 | update_basstate(ucs, 0, BS_ATRDPEND); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 487 | wake_up(&ucs->waitqueue); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 488 | del_timer(&ucs->timer_cmd_in); |
| 489 | |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 490 | switch (status) { |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 491 | case 0: /* normal completion */ |
| 492 | numbytes = urb->actual_length; |
| 493 | if (unlikely(numbytes != ucs->rcvbuf_size)) { |
| 494 | dev_warn(cs->dev, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 495 | "control read: received %d chars, expected %d\n", |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 496 | numbytes, ucs->rcvbuf_size); |
| 497 | if (numbytes > ucs->rcvbuf_size) |
| 498 | numbytes = ucs->rcvbuf_size; |
| 499 | } |
| 500 | |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 501 | /* copy received bytes to inbuf, notify event layer */ |
| 502 | if (gigaset_fill_inbuf(inbuf, ucs->rcvbuf, numbytes)) { |
| 503 | gig_dbg(DEBUG_INTR, "%s-->BH", __func__); |
| 504 | gigaset_schedule_event(cs); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 505 | } |
| 506 | break; |
| 507 | |
| 508 | case -ENOENT: /* cancelled */ |
| 509 | case -ECONNRESET: /* cancelled (async) */ |
| 510 | case -EINPROGRESS: /* pending */ |
| 511 | case -ENODEV: /* device removed */ |
| 512 | case -ESHUTDOWN: /* device shut down */ |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 513 | /* no further action necessary */ |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 514 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 515 | __func__, get_usb_statmsg(status)); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 516 | break; |
| 517 | |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 518 | default: /* other errors: retry */ |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 519 | if (ucs->retry_cmd_in++ < BAS_RETRY) { |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 520 | gig_dbg(DEBUG_USBREQ, "%s: %s, retry %d", __func__, |
| 521 | get_usb_statmsg(status), ucs->retry_cmd_in); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 522 | rc = atread_submit(cs, BAS_TIMEOUT); |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 523 | if (rc >= 0) |
| 524 | /* successfully resubmitted, skip freeing */ |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 525 | return; |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 526 | if (rc == -ENODEV) |
| 527 | /* disconnect, no further action necessary */ |
| 528 | break; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 529 | } |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 530 | dev_err(cs->dev, "control read: %s, giving up after %d tries\n", |
| 531 | get_usb_statmsg(status), ucs->retry_cmd_in); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 532 | error_reset(cs); |
| 533 | } |
| 534 | |
Tilman Schmidt | c8701a0 | 2010-09-30 13:34:40 +0000 | [diff] [blame] | 535 | /* read finished, free buffer */ |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 536 | kfree(ucs->rcvbuf); |
| 537 | ucs->rcvbuf = NULL; |
| 538 | ucs->rcvbuf_size = 0; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 539 | } |
| 540 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 541 | /* atread_submit |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 542 | * submit an HD_READ_ATMESSAGE command URB and optionally start a timeout |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 543 | * parameters: |
| 544 | * cs controller state structure |
| 545 | * timeout timeout in 1/10 sec., 0: none |
| 546 | * return value: |
| 547 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 548 | * -EBUSY if another request is pending |
| 549 | * any URB submission error code |
| 550 | */ |
| 551 | static int atread_submit(struct cardstate *cs, int timeout) |
| 552 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 553 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 554 | int basstate; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 555 | int ret; |
| 556 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 557 | gig_dbg(DEBUG_USBREQ, "-------> HD_READ_ATMESSAGE (%d)", |
| 558 | ucs->rcvbuf_size); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 559 | |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 560 | basstate = update_basstate(ucs, BS_ATRDPEND, 0); |
| 561 | if (basstate & BS_ATRDPEND) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 562 | dev_err(cs->dev, |
| 563 | "could not submit HD_READ_ATMESSAGE: URB busy\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 564 | return -EBUSY; |
| 565 | } |
| 566 | |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 567 | if (basstate & BS_SUSPEND) { |
| 568 | dev_notice(cs->dev, |
| 569 | "HD_READ_ATMESSAGE not submitted, " |
| 570 | "suspend in progress\n"); |
| 571 | update_basstate(ucs, 0, BS_ATRDPEND); |
| 572 | /* treat like disconnect */ |
| 573 | return -ENODEV; |
| 574 | } |
| 575 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 576 | ucs->dr_cmd_in.bRequestType = IN_VENDOR_REQ; |
| 577 | ucs->dr_cmd_in.bRequest = HD_READ_ATMESSAGE; |
| 578 | ucs->dr_cmd_in.wValue = 0; |
| 579 | ucs->dr_cmd_in.wIndex = 0; |
| 580 | ucs->dr_cmd_in.wLength = cpu_to_le16(ucs->rcvbuf_size); |
| 581 | usb_fill_control_urb(ucs->urb_cmd_in, ucs->udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 582 | usb_rcvctrlpipe(ucs->udev, 0), |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 583 | (unsigned char *) &ucs->dr_cmd_in, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 584 | ucs->rcvbuf, ucs->rcvbuf_size, |
| 585 | read_ctrl_callback, cs->inbuf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 586 | |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 587 | ret = usb_submit_urb(ucs->urb_cmd_in, GFP_ATOMIC); |
| 588 | if (ret != 0) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 589 | update_basstate(ucs, 0, BS_ATRDPEND); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 590 | dev_err(cs->dev, "could not submit HD_READ_ATMESSAGE: %s\n", |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 591 | get_usb_rcmsg(ret)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 592 | return ret; |
| 593 | } |
| 594 | |
| 595 | if (timeout > 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 596 | gig_dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 597 | mod_timer(&ucs->timer_cmd_in, jiffies + timeout * HZ / 10); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 598 | } |
| 599 | return 0; |
| 600 | } |
| 601 | |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 602 | /* int_in_work |
| 603 | * workqueue routine to clear halt on interrupt in endpoint |
| 604 | */ |
| 605 | |
| 606 | static void int_in_work(struct work_struct *work) |
| 607 | { |
| 608 | struct bas_cardstate *ucs = |
| 609 | container_of(work, struct bas_cardstate, int_in_wq); |
| 610 | struct urb *urb = ucs->urb_int_in; |
| 611 | struct cardstate *cs = urb->context; |
| 612 | int rc; |
| 613 | |
| 614 | /* clear halt condition */ |
| 615 | rc = usb_clear_halt(ucs->udev, urb->pipe); |
| 616 | gig_dbg(DEBUG_USBREQ, "clear_halt: %s", get_usb_rcmsg(rc)); |
| 617 | if (rc == 0) |
| 618 | /* success, resubmit interrupt read URB */ |
| 619 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
| 620 | if (rc != 0 && rc != -ENODEV) { |
| 621 | dev_err(cs->dev, "clear halt failed: %s\n", get_usb_rcmsg(rc)); |
| 622 | rc = usb_lock_device_for_reset(ucs->udev, ucs->interface); |
| 623 | if (rc == 0) { |
| 624 | rc = usb_reset_device(ucs->udev); |
| 625 | usb_unlock_device(ucs->udev); |
| 626 | } |
| 627 | } |
| 628 | ucs->retry_int_in = 0; |
| 629 | } |
| 630 | |
| 631 | /* int_in_resubmit |
| 632 | * timer routine for interrupt read delayed resubmit |
| 633 | * argument: |
| 634 | * controller state structure |
| 635 | */ |
| 636 | static void int_in_resubmit(unsigned long data) |
| 637 | { |
| 638 | struct cardstate *cs = (struct cardstate *) data; |
| 639 | struct bas_cardstate *ucs = cs->hw.bas; |
| 640 | int rc; |
| 641 | |
| 642 | if (ucs->retry_int_in++ >= BAS_RETRY) { |
| 643 | dev_err(cs->dev, "interrupt read: giving up after %d tries\n", |
| 644 | ucs->retry_int_in); |
| 645 | usb_queue_reset_device(ucs->interface); |
| 646 | return; |
| 647 | } |
| 648 | |
| 649 | gig_dbg(DEBUG_USBREQ, "%s: retry %d", __func__, ucs->retry_int_in); |
| 650 | rc = usb_submit_urb(ucs->urb_int_in, GFP_ATOMIC); |
| 651 | if (rc != 0 && rc != -ENODEV) { |
| 652 | dev_err(cs->dev, "could not resubmit interrupt URB: %s\n", |
| 653 | get_usb_rcmsg(rc)); |
| 654 | usb_queue_reset_device(ucs->interface); |
| 655 | } |
| 656 | } |
| 657 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 658 | /* read_int_callback |
| 659 | * USB completion handler for interrupt pipe input |
| 660 | * called by the USB subsystem in interrupt context |
| 661 | * parameter: |
| 662 | * urb USB request block |
| 663 | * urb->context = controller state structure |
| 664 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 665 | static void read_int_callback(struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 666 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 667 | struct cardstate *cs = urb->context; |
| 668 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 669 | struct bc_state *bcs; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 670 | int status = urb->status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 671 | unsigned long flags; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 672 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 673 | unsigned l; |
| 674 | int channel; |
| 675 | |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 676 | switch (status) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 677 | case 0: /* success */ |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 678 | ucs->retry_int_in = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 679 | break; |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 680 | case -EPIPE: /* endpoint stalled */ |
| 681 | schedule_work(&ucs->int_in_wq); |
| 682 | /* fall through */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 683 | case -ENOENT: /* cancelled */ |
| 684 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 685 | case -EINPROGRESS: /* pending */ |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 686 | case -ENODEV: /* device removed */ |
| 687 | case -ESHUTDOWN: /* device shut down */ |
| 688 | /* no further action necessary */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 689 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 690 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 691 | return; |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 692 | case -EPROTO: /* protocol error or unplug */ |
| 693 | case -EILSEQ: |
| 694 | case -ETIME: |
| 695 | /* resubmit after delay */ |
| 696 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 697 | __func__, get_usb_statmsg(status)); |
| 698 | mod_timer(&ucs->timer_int_in, jiffies + HZ / 10); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 699 | return; |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 700 | default: /* other errors: just resubmit */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 701 | dev_warn(cs->dev, "interrupt read: %s\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 702 | get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 703 | goto resubmit; |
| 704 | } |
| 705 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 706 | /* drop incomplete packets even if the missing bytes wouldn't matter */ |
Tilman Schmidt | 170ebf8 | 2009-03-18 23:44:23 -0700 | [diff] [blame] | 707 | if (unlikely(urb->actual_length < IP_MSGSIZE)) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 708 | dev_warn(cs->dev, "incomplete interrupt packet (%d bytes)\n", |
| 709 | urb->actual_length); |
| 710 | goto resubmit; |
| 711 | } |
| 712 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 713 | l = (unsigned) ucs->int_in_buf[1] + |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 714 | (((unsigned) ucs->int_in_buf[2]) << 8); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 715 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 716 | gig_dbg(DEBUG_USBREQ, "<-------%d: 0x%02x (%u [0x%02x 0x%02x])", |
| 717 | urb->actual_length, (int)ucs->int_in_buf[0], l, |
| 718 | (int)ucs->int_in_buf[1], (int)ucs->int_in_buf[2]); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 719 | |
| 720 | channel = 0; |
| 721 | |
| 722 | switch (ucs->int_in_buf[0]) { |
| 723 | case HD_DEVICE_INIT_OK: |
| 724 | update_basstate(ucs, BS_INIT, 0); |
| 725 | break; |
| 726 | |
| 727 | case HD_READY_SEND_ATDATA: |
| 728 | del_timer(&ucs->timer_atrdy); |
| 729 | update_basstate(ucs, BS_ATREADY, BS_ATTIMER); |
| 730 | start_cbsend(cs); |
| 731 | break; |
| 732 | |
| 733 | case HD_OPEN_B2CHANNEL_ACK: |
| 734 | ++channel; |
| 735 | case HD_OPEN_B1CHANNEL_ACK: |
| 736 | bcs = cs->bcs + channel; |
| 737 | update_basstate(ucs, BS_B1OPEN << channel, 0); |
| 738 | gigaset_bchannel_up(bcs); |
| 739 | break; |
| 740 | |
| 741 | case HD_OPEN_ATCHANNEL_ACK: |
| 742 | update_basstate(ucs, BS_ATOPEN, 0); |
| 743 | start_cbsend(cs); |
| 744 | break; |
| 745 | |
| 746 | case HD_CLOSE_B2CHANNEL_ACK: |
| 747 | ++channel; |
| 748 | case HD_CLOSE_B1CHANNEL_ACK: |
| 749 | bcs = cs->bcs + channel; |
| 750 | update_basstate(ucs, 0, BS_B1OPEN << channel); |
| 751 | stopurbs(bcs->hw.bas); |
| 752 | gigaset_bchannel_down(bcs); |
| 753 | break; |
| 754 | |
| 755 | case HD_CLOSE_ATCHANNEL_ACK: |
| 756 | update_basstate(ucs, 0, BS_ATOPEN); |
| 757 | break; |
| 758 | |
| 759 | case HD_B2_FLOW_CONTROL: |
| 760 | ++channel; |
| 761 | case HD_B1_FLOW_CONTROL: |
| 762 | bcs = cs->bcs + channel; |
| 763 | atomic_add((l - BAS_NORMFRAME) * BAS_CORRFRAMES, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 764 | &bcs->hw.bas->corrbytes); |
| 765 | gig_dbg(DEBUG_ISO, |
| 766 | "Flow control (channel %d, sub %d): 0x%02x => %d", |
| 767 | channel, bcs->hw.bas->numsub, l, |
| 768 | atomic_read(&bcs->hw.bas->corrbytes)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 769 | break; |
| 770 | |
| 771 | case HD_RECEIVEATDATA_ACK: /* AT response ready to be received */ |
| 772 | if (!l) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 773 | dev_warn(cs->dev, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 774 | "HD_RECEIVEATDATA_ACK with length 0 ignored\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 775 | break; |
| 776 | } |
| 777 | spin_lock_irqsave(&cs->lock, flags); |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 778 | if (ucs->basstate & BS_ATRDPEND) { |
| 779 | spin_unlock_irqrestore(&cs->lock, flags); |
| 780 | dev_warn(cs->dev, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 781 | "HD_RECEIVEATDATA_ACK(%d) during HD_READ_ATMESSAGE(%d) ignored\n", |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 782 | l, ucs->rcvbuf_size); |
| 783 | break; |
| 784 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 785 | if (ucs->rcvbuf_size) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 786 | /* throw away previous buffer - we have no queue */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 787 | dev_err(cs->dev, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 788 | "receive AT data overrun, %d bytes lost\n", |
| 789 | ucs->rcvbuf_size); |
| 790 | kfree(ucs->rcvbuf); |
| 791 | ucs->rcvbuf_size = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 792 | } |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 793 | ucs->rcvbuf = kmalloc(l, GFP_ATOMIC); |
| 794 | if (ucs->rcvbuf == NULL) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 795 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 796 | dev_err(cs->dev, "out of memory receiving AT data\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 797 | break; |
| 798 | } |
| 799 | ucs->rcvbuf_size = l; |
| 800 | ucs->retry_cmd_in = 0; |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 801 | rc = atread_submit(cs, BAS_TIMEOUT); |
| 802 | if (rc < 0) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 803 | kfree(ucs->rcvbuf); |
| 804 | ucs->rcvbuf = NULL; |
| 805 | ucs->rcvbuf_size = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 806 | } |
| 807 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 808 | if (rc < 0 && rc != -ENODEV) |
| 809 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 810 | break; |
| 811 | |
| 812 | case HD_RESET_INTERRUPT_PIPE_ACK: |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 813 | update_basstate(ucs, 0, BS_RESETTING); |
| 814 | dev_notice(cs->dev, "interrupt pipe reset\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 815 | break; |
| 816 | |
| 817 | case HD_SUSPEND_END: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 818 | gig_dbg(DEBUG_USBREQ, "HD_SUSPEND_END"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 819 | break; |
| 820 | |
| 821 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 822 | dev_warn(cs->dev, |
| 823 | "unknown Gigaset signal 0x%02x (%u) ignored\n", |
| 824 | (int) ucs->int_in_buf[0], l); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | check_pending(ucs); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 828 | wake_up(&ucs->waitqueue); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 829 | |
| 830 | resubmit: |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 831 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 832 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 833 | dev_err(cs->dev, "could not resubmit interrupt URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 834 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 835 | error_reset(cs); |
| 836 | } |
| 837 | } |
| 838 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 839 | /* read_iso_callback |
| 840 | * USB completion handler for B channel isochronous input |
| 841 | * called by the USB subsystem in interrupt context |
| 842 | * parameter: |
| 843 | * urb USB request block of completed request |
| 844 | * urb->context = bc_state structure |
| 845 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 846 | static void read_iso_callback(struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 847 | { |
| 848 | struct bc_state *bcs; |
| 849 | struct bas_bc_state *ubc; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 850 | int status = urb->status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 851 | unsigned long flags; |
| 852 | int i, rc; |
| 853 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 854 | /* status codes not worth bothering the tasklet with */ |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 855 | if (unlikely(status == -ENOENT || |
| 856 | status == -ECONNRESET || |
| 857 | status == -EINPROGRESS || |
| 858 | status == -ENODEV || |
| 859 | status == -ESHUTDOWN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 860 | gig_dbg(DEBUG_ISO, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 861 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 862 | return; |
| 863 | } |
| 864 | |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 865 | bcs = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 866 | ubc = bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 867 | |
| 868 | spin_lock_irqsave(&ubc->isoinlock, flags); |
| 869 | if (likely(ubc->isoindone == NULL)) { |
| 870 | /* pass URB to tasklet */ |
| 871 | ubc->isoindone = urb; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 872 | ubc->isoinstatus = status; |
Tilman Schmidt | 368fd81 | 2009-04-05 06:39:33 +0000 | [diff] [blame] | 873 | tasklet_hi_schedule(&ubc->rcvd_tasklet); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 874 | } else { |
| 875 | /* tasklet still busy, drop data and resubmit URB */ |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 876 | gig_dbg(DEBUG_ISO, "%s: overrun", __func__); |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 877 | ubc->loststatus = status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 878 | for (i = 0; i < BAS_NUMFRAMES; i++) { |
| 879 | ubc->isoinlost += urb->iso_frame_desc[i].actual_length; |
| 880 | if (unlikely(urb->iso_frame_desc[i].status != 0 && |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 881 | urb->iso_frame_desc[i].status != |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 882 | -EINPROGRESS)) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 883 | ubc->loststatus = urb->iso_frame_desc[i].status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 884 | urb->iso_frame_desc[i].status = 0; |
| 885 | urb->iso_frame_desc[i].actual_length = 0; |
| 886 | } |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 887 | if (likely(ubc->running)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 888 | /* urb->dev is clobbered by USB subsystem */ |
| 889 | urb->dev = bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 890 | urb->transfer_flags = URB_ISO_ASAP; |
| 891 | urb->number_of_packets = BAS_NUMFRAMES; |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 892 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 893 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 894 | dev_err(bcs->cs->dev, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 895 | "could not resubmit isoc read URB: %s\n", |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 896 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 897 | dump_urb(DEBUG_ISO, "isoc read", urb); |
| 898 | error_hangup(bcs); |
| 899 | } |
| 900 | } |
| 901 | } |
| 902 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 903 | } |
| 904 | |
| 905 | /* write_iso_callback |
| 906 | * USB completion handler for B channel isochronous output |
| 907 | * called by the USB subsystem in interrupt context |
| 908 | * parameter: |
| 909 | * urb USB request block of completed request |
| 910 | * urb->context = isow_urbctx_t structure |
| 911 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 912 | static void write_iso_callback(struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 913 | { |
| 914 | struct isow_urbctx_t *ucx; |
| 915 | struct bas_bc_state *ubc; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 916 | int status = urb->status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 917 | unsigned long flags; |
| 918 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 919 | /* status codes not worth bothering the tasklet with */ |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 920 | if (unlikely(status == -ENOENT || |
| 921 | status == -ECONNRESET || |
| 922 | status == -EINPROGRESS || |
| 923 | status == -ENODEV || |
| 924 | status == -ESHUTDOWN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 925 | gig_dbg(DEBUG_ISO, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 926 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 927 | return; |
| 928 | } |
| 929 | |
| 930 | /* pass URB context to tasklet */ |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 931 | ucx = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 932 | ubc = ucx->bcs->hw.bas; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 933 | ucx->status = status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 934 | |
| 935 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 936 | ubc->isooutovfl = ubc->isooutdone; |
| 937 | ubc->isooutdone = ucx; |
| 938 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
Tilman Schmidt | 368fd81 | 2009-04-05 06:39:33 +0000 | [diff] [blame] | 939 | tasklet_hi_schedule(&ubc->sent_tasklet); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 940 | } |
| 941 | |
| 942 | /* starturbs |
| 943 | * prepare and submit USB request blocks for isochronous input and output |
| 944 | * argument: |
| 945 | * B channel control structure |
| 946 | * return value: |
| 947 | * 0 on success |
| 948 | * < 0 on error (no URBs submitted) |
| 949 | */ |
| 950 | static int starturbs(struct bc_state *bcs) |
| 951 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 952 | struct bas_bc_state *ubc = bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 953 | struct urb *urb; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 954 | int j, k; |
| 955 | int rc; |
| 956 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 957 | /* initialize L2 reception */ |
Tilman Schmidt | 088ec0c | 2009-10-06 12:19:07 +0000 | [diff] [blame] | 958 | if (bcs->proto2 == L2_HDLC) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 959 | bcs->inputstate |= INS_flag_hunt; |
| 960 | |
| 961 | /* submit all isochronous input URBs */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 962 | ubc->running = 1; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 963 | for (k = 0; k < BAS_INURBS; k++) { |
| 964 | urb = ubc->isoinurbs[k]; |
| 965 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 966 | rc = -EFAULT; |
| 967 | goto error; |
| 968 | } |
| 969 | |
| 970 | urb->dev = bcs->cs->hw.bas->udev; |
| 971 | urb->pipe = usb_rcvisocpipe(urb->dev, 3 + 2 * bcs->channel); |
| 972 | urb->transfer_flags = URB_ISO_ASAP; |
| 973 | urb->transfer_buffer = ubc->isoinbuf + k * BAS_INBUFSIZE; |
| 974 | urb->transfer_buffer_length = BAS_INBUFSIZE; |
| 975 | urb->number_of_packets = BAS_NUMFRAMES; |
| 976 | urb->interval = BAS_FRAMETIME; |
| 977 | urb->complete = read_iso_callback; |
| 978 | urb->context = bcs; |
| 979 | for (j = 0; j < BAS_NUMFRAMES; j++) { |
| 980 | urb->iso_frame_desc[j].offset = j * BAS_MAXFRAME; |
| 981 | urb->iso_frame_desc[j].length = BAS_MAXFRAME; |
| 982 | urb->iso_frame_desc[j].status = 0; |
| 983 | urb->iso_frame_desc[j].actual_length = 0; |
| 984 | } |
| 985 | |
| 986 | dump_urb(DEBUG_ISO, "Initial isoc read", urb); |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 987 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
| 988 | if (rc != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 989 | goto error; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 990 | } |
| 991 | |
| 992 | /* initialize L2 transmission */ |
| 993 | gigaset_isowbuf_init(ubc->isooutbuf, PPP_FLAG); |
| 994 | |
| 995 | /* set up isochronous output URBs for flag idling */ |
| 996 | for (k = 0; k < BAS_OUTURBS; ++k) { |
| 997 | urb = ubc->isoouturbs[k].urb; |
| 998 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 999 | rc = -EFAULT; |
| 1000 | goto error; |
| 1001 | } |
| 1002 | urb->dev = bcs->cs->hw.bas->udev; |
| 1003 | urb->pipe = usb_sndisocpipe(urb->dev, 4 + 2 * bcs->channel); |
| 1004 | urb->transfer_flags = URB_ISO_ASAP; |
| 1005 | urb->transfer_buffer = ubc->isooutbuf->data; |
| 1006 | urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); |
| 1007 | urb->number_of_packets = BAS_NUMFRAMES; |
| 1008 | urb->interval = BAS_FRAMETIME; |
| 1009 | urb->complete = write_iso_callback; |
| 1010 | urb->context = &ubc->isoouturbs[k]; |
| 1011 | for (j = 0; j < BAS_NUMFRAMES; ++j) { |
| 1012 | urb->iso_frame_desc[j].offset = BAS_OUTBUFSIZE; |
| 1013 | urb->iso_frame_desc[j].length = BAS_NORMFRAME; |
| 1014 | urb->iso_frame_desc[j].status = 0; |
| 1015 | urb->iso_frame_desc[j].actual_length = 0; |
| 1016 | } |
| 1017 | ubc->isoouturbs[k].limit = -1; |
| 1018 | } |
| 1019 | |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1020 | /* keep one URB free, submit the others */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1021 | for (k = 0; k < BAS_OUTURBS - 1; ++k) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1022 | dump_urb(DEBUG_ISO, "Initial isoc write", urb); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1023 | rc = usb_submit_urb(ubc->isoouturbs[k].urb, GFP_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1024 | if (rc != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1025 | goto error; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1026 | } |
| 1027 | dump_urb(DEBUG_ISO, "Initial isoc write (free)", urb); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1028 | ubc->isooutfree = &ubc->isoouturbs[BAS_OUTURBS - 1]; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1029 | ubc->isooutdone = ubc->isooutovfl = NULL; |
| 1030 | return 0; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1031 | error: |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1032 | stopurbs(ubc); |
| 1033 | return rc; |
| 1034 | } |
| 1035 | |
| 1036 | /* stopurbs |
| 1037 | * cancel the USB request blocks for isochronous input and output |
| 1038 | * errors are silently ignored |
| 1039 | * argument: |
| 1040 | * B channel control structure |
| 1041 | */ |
| 1042 | static void stopurbs(struct bas_bc_state *ubc) |
| 1043 | { |
| 1044 | int k, rc; |
| 1045 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1046 | ubc->running = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1047 | |
| 1048 | for (k = 0; k < BAS_INURBS; ++k) { |
| 1049 | rc = usb_unlink_urb(ubc->isoinurbs[k]); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1050 | gig_dbg(DEBUG_ISO, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1051 | "%s: isoc input URB %d unlinked, result = %s", |
| 1052 | __func__, k, get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | for (k = 0; k < BAS_OUTURBS; ++k) { |
| 1056 | rc = usb_unlink_urb(ubc->isoouturbs[k].urb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1057 | gig_dbg(DEBUG_ISO, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1058 | "%s: isoc output URB %d unlinked, result = %s", |
| 1059 | __func__, k, get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | /* Isochronous Write - Bottom Half */ |
| 1064 | /* =============================== */ |
| 1065 | |
| 1066 | /* submit_iso_write_urb |
| 1067 | * fill and submit the next isochronous write URB |
| 1068 | * parameters: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1069 | * ucx context structure containing URB |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1070 | * return value: |
| 1071 | * number of frames submitted in URB |
| 1072 | * 0 if URB not submitted because no data available (isooutbuf busy) |
| 1073 | * error code < 0 on error |
| 1074 | */ |
| 1075 | static int submit_iso_write_urb(struct isow_urbctx_t *ucx) |
| 1076 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1077 | struct urb *urb = ucx->urb; |
| 1078 | struct bas_bc_state *ubc = ucx->bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1079 | struct usb_iso_packet_descriptor *ifd; |
| 1080 | int corrbytes, nframe, rc; |
| 1081 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1082 | /* urb->dev is clobbered by USB subsystem */ |
| 1083 | urb->dev = ucx->bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1084 | urb->transfer_flags = URB_ISO_ASAP; |
| 1085 | urb->transfer_buffer = ubc->isooutbuf->data; |
| 1086 | urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); |
| 1087 | |
| 1088 | for (nframe = 0; nframe < BAS_NUMFRAMES; nframe++) { |
| 1089 | ifd = &urb->iso_frame_desc[nframe]; |
| 1090 | |
| 1091 | /* compute frame length according to flow control */ |
| 1092 | ifd->length = BAS_NORMFRAME; |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1093 | corrbytes = atomic_read(&ubc->corrbytes); |
| 1094 | if (corrbytes != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1095 | gig_dbg(DEBUG_ISO, "%s: corrbytes=%d", |
| 1096 | __func__, corrbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1097 | if (corrbytes > BAS_HIGHFRAME - BAS_NORMFRAME) |
| 1098 | corrbytes = BAS_HIGHFRAME - BAS_NORMFRAME; |
| 1099 | else if (corrbytes < BAS_LOWFRAME - BAS_NORMFRAME) |
| 1100 | corrbytes = BAS_LOWFRAME - BAS_NORMFRAME; |
| 1101 | ifd->length += corrbytes; |
| 1102 | atomic_add(-corrbytes, &ubc->corrbytes); |
| 1103 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1104 | |
| 1105 | /* retrieve block of data to send */ |
Tilman Schmidt | 5f09c4c | 2008-07-23 21:28:27 -0700 | [diff] [blame] | 1106 | rc = gigaset_isowbuf_getbytes(ubc->isooutbuf, ifd->length); |
| 1107 | if (rc < 0) { |
| 1108 | if (rc == -EBUSY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1109 | gig_dbg(DEBUG_ISO, |
| 1110 | "%s: buffer busy at frame %d", |
| 1111 | __func__, nframe); |
| 1112 | /* tasklet will be restarted from |
Tilman Schmidt | 088ec0c | 2009-10-06 12:19:07 +0000 | [diff] [blame] | 1113 | gigaset_isoc_send_skb() */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1114 | } else { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1115 | dev_err(ucx->bcs->cs->dev, |
| 1116 | "%s: buffer error %d at frame %d\n", |
Tilman Schmidt | 5f09c4c | 2008-07-23 21:28:27 -0700 | [diff] [blame] | 1117 | __func__, rc, nframe); |
| 1118 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1119 | } |
| 1120 | break; |
| 1121 | } |
Tilman Schmidt | 5f09c4c | 2008-07-23 21:28:27 -0700 | [diff] [blame] | 1122 | ifd->offset = rc; |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1123 | ucx->limit = ubc->isooutbuf->nextread; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1124 | ifd->status = 0; |
| 1125 | ifd->actual_length = 0; |
| 1126 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1127 | if (unlikely(nframe == 0)) |
| 1128 | return 0; /* no data to send */ |
| 1129 | urb->number_of_packets = nframe; |
Tilman Schmidt | 69049cc | 2006-04-10 22:55:16 -0700 | [diff] [blame] | 1130 | |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1131 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1132 | if (unlikely(rc)) { |
| 1133 | if (rc == -ENODEV) |
| 1134 | /* device removed - give up silently */ |
| 1135 | gig_dbg(DEBUG_ISO, "%s: disconnected", __func__); |
| 1136 | else |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1137 | dev_err(ucx->bcs->cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1138 | "could not submit isoc write URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1139 | get_usb_rcmsg(rc)); |
| 1140 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1141 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1142 | ++ubc->numsub; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1143 | return nframe; |
| 1144 | } |
| 1145 | |
| 1146 | /* write_iso_tasklet |
| 1147 | * tasklet scheduled when an isochronous output URB from the Gigaset device |
| 1148 | * has completed |
| 1149 | * parameter: |
| 1150 | * data B channel state structure |
| 1151 | */ |
| 1152 | static void write_iso_tasklet(unsigned long data) |
| 1153 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1154 | struct bc_state *bcs = (struct bc_state *) data; |
| 1155 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1156 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1157 | struct isow_urbctx_t *done, *next, *ovfl; |
| 1158 | struct urb *urb; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1159 | int status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1160 | struct usb_iso_packet_descriptor *ifd; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1161 | unsigned long flags; |
| 1162 | int i; |
| 1163 | struct sk_buff *skb; |
| 1164 | int len; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1165 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1166 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1167 | /* loop while completed URBs arrive in time */ |
| 1168 | for (;;) { |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1169 | if (unlikely(!(ubc->running))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1170 | gig_dbg(DEBUG_ISO, "%s: not running", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1171 | return; |
| 1172 | } |
| 1173 | |
| 1174 | /* retrieve completed URBs */ |
| 1175 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1176 | done = ubc->isooutdone; |
| 1177 | ubc->isooutdone = NULL; |
| 1178 | ovfl = ubc->isooutovfl; |
| 1179 | ubc->isooutovfl = NULL; |
| 1180 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1181 | if (ovfl) { |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1182 | dev_err(cs->dev, "isoc write underrun\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1183 | error_hangup(bcs); |
| 1184 | break; |
| 1185 | } |
| 1186 | if (!done) |
| 1187 | break; |
| 1188 | |
| 1189 | /* submit free URB if available */ |
| 1190 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1191 | next = ubc->isooutfree; |
| 1192 | ubc->isooutfree = NULL; |
| 1193 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1194 | if (next) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1195 | rc = submit_iso_write_urb(next); |
| 1196 | if (unlikely(rc <= 0 && rc != -ENODEV)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1197 | /* could not submit URB, put it back */ |
| 1198 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1199 | if (ubc->isooutfree == NULL) { |
| 1200 | ubc->isooutfree = next; |
| 1201 | next = NULL; |
| 1202 | } |
| 1203 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1204 | if (next) { |
| 1205 | /* couldn't put it back */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1206 | dev_err(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1207 | "losing isoc write URB\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1208 | error_hangup(bcs); |
| 1209 | } |
| 1210 | } |
| 1211 | } |
| 1212 | |
| 1213 | /* process completed URB */ |
| 1214 | urb = done->urb; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1215 | status = done->status; |
| 1216 | switch (status) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1217 | case -EXDEV: /* partial completion */ |
| 1218 | gig_dbg(DEBUG_ISO, "%s: URB partially completed", |
| 1219 | __func__); |
| 1220 | /* fall through - what's the difference anyway? */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1221 | case 0: /* normal completion */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1222 | /* inspect individual frames |
| 1223 | * assumptions (for lack of documentation): |
| 1224 | * - actual_length bytes of first frame in error are |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1225 | * successfully sent |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1226 | * - all following frames are not sent at all |
| 1227 | */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1228 | for (i = 0; i < BAS_NUMFRAMES; i++) { |
| 1229 | ifd = &urb->iso_frame_desc[i]; |
| 1230 | if (ifd->status || |
| 1231 | ifd->actual_length != ifd->length) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1232 | dev_warn(cs->dev, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1233 | "isoc write: frame %d[%d/%d]: %s\n", |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1234 | i, ifd->actual_length, |
| 1235 | ifd->length, |
| 1236 | get_usb_statmsg(ifd->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1237 | break; |
| 1238 | } |
| 1239 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1240 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1241 | case -EPIPE: /* stall - probably underrun */ |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1242 | dev_err(cs->dev, "isoc write: stalled\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1243 | error_hangup(bcs); |
| 1244 | break; |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1245 | default: /* other errors */ |
| 1246 | dev_warn(cs->dev, "isoc write: %s\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1247 | get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | /* mark the write buffer area covered by this URB as free */ |
| 1251 | if (done->limit >= 0) |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1252 | ubc->isooutbuf->read = done->limit; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1253 | |
| 1254 | /* mark URB as free */ |
| 1255 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1256 | next = ubc->isooutfree; |
| 1257 | ubc->isooutfree = done; |
| 1258 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1259 | if (next) { |
| 1260 | /* only one URB still active - resubmit one */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1261 | rc = submit_iso_write_urb(next); |
| 1262 | if (unlikely(rc <= 0 && rc != -ENODEV)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1263 | /* couldn't submit */ |
| 1264 | error_hangup(bcs); |
| 1265 | } |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | /* process queued SKBs */ |
| 1270 | while ((skb = skb_dequeue(&bcs->squeue))) { |
| 1271 | /* copy to output buffer, doing L2 encapsulation */ |
| 1272 | len = skb->len; |
| 1273 | if (gigaset_isoc_buildframe(bcs, skb->data, len) == -EAGAIN) { |
| 1274 | /* insufficient buffer space, push back onto queue */ |
| 1275 | skb_queue_head(&bcs->squeue, skb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1276 | gig_dbg(DEBUG_ISO, "%s: skb requeued, qlen=%d", |
| 1277 | __func__, skb_queue_len(&bcs->squeue)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1278 | break; |
| 1279 | } |
| 1280 | skb_pull(skb, len); |
| 1281 | gigaset_skb_sent(bcs, skb); |
| 1282 | dev_kfree_skb_any(skb); |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | /* Isochronous Read - Bottom Half */ |
| 1287 | /* ============================== */ |
| 1288 | |
| 1289 | /* read_iso_tasklet |
| 1290 | * tasklet scheduled when an isochronous input URB from the Gigaset device |
| 1291 | * has completed |
| 1292 | * parameter: |
| 1293 | * data B channel state structure |
| 1294 | */ |
| 1295 | static void read_iso_tasklet(unsigned long data) |
| 1296 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1297 | struct bc_state *bcs = (struct bc_state *) data; |
| 1298 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1299 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1300 | struct urb *urb; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1301 | int status; |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1302 | struct usb_iso_packet_descriptor *ifd; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1303 | char *rcvbuf; |
| 1304 | unsigned long flags; |
| 1305 | int totleft, numbytes, offset, frame, rc; |
| 1306 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1307 | /* loop while more completed URBs arrive in the meantime */ |
| 1308 | for (;;) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1309 | /* retrieve URB */ |
| 1310 | spin_lock_irqsave(&ubc->isoinlock, flags); |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1311 | urb = ubc->isoindone; |
| 1312 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1313 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 1314 | return; |
| 1315 | } |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1316 | status = ubc->isoinstatus; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1317 | ubc->isoindone = NULL; |
| 1318 | if (unlikely(ubc->loststatus != -EINPROGRESS)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1319 | dev_warn(cs->dev, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1320 | "isoc read overrun, URB dropped (status: %s, %d bytes)\n", |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1321 | get_usb_statmsg(ubc->loststatus), |
| 1322 | ubc->isoinlost); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1323 | ubc->loststatus = -EINPROGRESS; |
| 1324 | } |
| 1325 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 1326 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1327 | if (unlikely(!(ubc->running))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1328 | gig_dbg(DEBUG_ISO, |
| 1329 | "%s: channel not running, " |
| 1330 | "dropped URB with status: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1331 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1332 | return; |
| 1333 | } |
| 1334 | |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1335 | switch (status) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1336 | case 0: /* normal completion */ |
| 1337 | break; |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1338 | case -EXDEV: /* inspect individual frames |
| 1339 | (we do that anyway) */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1340 | gig_dbg(DEBUG_ISO, "%s: URB partially completed", |
| 1341 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1342 | break; |
| 1343 | case -ENOENT: |
| 1344 | case -ECONNRESET: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1345 | case -EINPROGRESS: |
| 1346 | gig_dbg(DEBUG_ISO, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1347 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1348 | continue; /* -> skip */ |
| 1349 | case -EPIPE: |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1350 | dev_err(cs->dev, "isoc read: stalled\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1351 | error_hangup(bcs); |
| 1352 | continue; /* -> skip */ |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1353 | default: /* other error */ |
| 1354 | dev_warn(cs->dev, "isoc read: %s\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1355 | get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1356 | goto error; |
| 1357 | } |
| 1358 | |
| 1359 | rcvbuf = urb->transfer_buffer; |
| 1360 | totleft = urb->actual_length; |
| 1361 | for (frame = 0; totleft > 0 && frame < BAS_NUMFRAMES; frame++) { |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1362 | ifd = &urb->iso_frame_desc[frame]; |
| 1363 | numbytes = ifd->actual_length; |
| 1364 | switch (ifd->status) { |
| 1365 | case 0: /* success */ |
| 1366 | break; |
| 1367 | case -EPROTO: /* protocol error or unplug */ |
| 1368 | case -EILSEQ: |
| 1369 | case -ETIME: |
| 1370 | /* probably just disconnected, ignore */ |
| 1371 | gig_dbg(DEBUG_ISO, |
| 1372 | "isoc read: frame %d[%d]: %s\n", |
| 1373 | frame, numbytes, |
| 1374 | get_usb_statmsg(ifd->status)); |
| 1375 | break; |
| 1376 | default: /* other error */ |
| 1377 | /* report, assume transferred bytes are ok */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1378 | dev_warn(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1379 | "isoc read: frame %d[%d]: %s\n", |
Tilman Schmidt | eb4459f | 2009-10-06 12:18:36 +0000 | [diff] [blame] | 1380 | frame, numbytes, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1381 | get_usb_statmsg(ifd->status)); |
| 1382 | } |
Tilman Schmidt | eb4459f | 2009-10-06 12:18:36 +0000 | [diff] [blame] | 1383 | if (unlikely(numbytes > BAS_MAXFRAME)) |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1384 | dev_warn(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1385 | "isoc read: frame %d[%d]: %s\n", |
| 1386 | frame, numbytes, |
| 1387 | "exceeds max frame size"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1388 | if (unlikely(numbytes > totleft)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1389 | dev_warn(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1390 | "isoc read: frame %d[%d]: %s\n", |
| 1391 | frame, numbytes, |
| 1392 | "exceeds total transfer length"); |
Tilman Schmidt | eb4459f | 2009-10-06 12:18:36 +0000 | [diff] [blame] | 1393 | numbytes = totleft; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1394 | } |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1395 | offset = ifd->offset; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1396 | if (unlikely(offset + numbytes > BAS_INBUFSIZE)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1397 | dev_warn(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1398 | "isoc read: frame %d[%d]: %s\n", |
| 1399 | frame, numbytes, |
| 1400 | "exceeds end of buffer"); |
Tilman Schmidt | eb4459f | 2009-10-06 12:18:36 +0000 | [diff] [blame] | 1401 | numbytes = BAS_INBUFSIZE - offset; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1402 | } |
| 1403 | gigaset_isoc_receive(rcvbuf + offset, numbytes, bcs); |
| 1404 | totleft -= numbytes; |
| 1405 | } |
| 1406 | if (unlikely(totleft > 0)) |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1407 | dev_warn(cs->dev, "isoc read: %d data bytes missing\n", |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1408 | totleft); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1409 | |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1410 | error: |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1411 | /* URB processed, resubmit */ |
| 1412 | for (frame = 0; frame < BAS_NUMFRAMES; frame++) { |
| 1413 | urb->iso_frame_desc[frame].status = 0; |
| 1414 | urb->iso_frame_desc[frame].actual_length = 0; |
| 1415 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1416 | /* urb->dev is clobbered by USB subsystem */ |
| 1417 | urb->dev = bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1418 | urb->transfer_flags = URB_ISO_ASAP; |
| 1419 | urb->number_of_packets = BAS_NUMFRAMES; |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1420 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1421 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1422 | dev_err(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1423 | "could not resubmit isoc read URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1424 | get_usb_rcmsg(rc)); |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1425 | dump_urb(DEBUG_ISO, "resubmit isoc read", urb); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1426 | error_hangup(bcs); |
| 1427 | } |
| 1428 | } |
| 1429 | } |
| 1430 | |
| 1431 | /* Channel Operations */ |
| 1432 | /* ================== */ |
| 1433 | |
| 1434 | /* req_timeout |
| 1435 | * timeout routine for control output request |
| 1436 | * argument: |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1437 | * controller state structure |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1438 | */ |
| 1439 | static void req_timeout(unsigned long data) |
| 1440 | { |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1441 | struct cardstate *cs = (struct cardstate *) data; |
| 1442 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1443 | int pending; |
| 1444 | unsigned long flags; |
| 1445 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1446 | check_pending(ucs); |
| 1447 | |
| 1448 | spin_lock_irqsave(&ucs->lock, flags); |
| 1449 | pending = ucs->pending; |
| 1450 | ucs->pending = 0; |
| 1451 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1452 | |
| 1453 | switch (pending) { |
| 1454 | case 0: /* no pending request */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1455 | gig_dbg(DEBUG_USBREQ, "%s: no request pending", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1456 | break; |
| 1457 | |
| 1458 | case HD_OPEN_ATCHANNEL: |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1459 | dev_err(cs->dev, "timeout opening AT channel\n"); |
| 1460 | error_reset(cs); |
| 1461 | break; |
| 1462 | |
| 1463 | case HD_OPEN_B1CHANNEL: |
| 1464 | dev_err(cs->dev, "timeout opening channel 1\n"); |
| 1465 | error_hangup(&cs->bcs[0]); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1466 | break; |
| 1467 | |
| 1468 | case HD_OPEN_B2CHANNEL: |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1469 | dev_err(cs->dev, "timeout opening channel 2\n"); |
| 1470 | error_hangup(&cs->bcs[1]); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1471 | break; |
| 1472 | |
| 1473 | case HD_CLOSE_ATCHANNEL: |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1474 | dev_err(cs->dev, "timeout closing AT channel\n"); |
| 1475 | error_reset(cs); |
| 1476 | break; |
| 1477 | |
| 1478 | case HD_CLOSE_B1CHANNEL: |
| 1479 | dev_err(cs->dev, "timeout closing channel 1\n"); |
| 1480 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1481 | break; |
| 1482 | |
| 1483 | case HD_CLOSE_B2CHANNEL: |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1484 | dev_err(cs->dev, "timeout closing channel 2\n"); |
| 1485 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1486 | break; |
| 1487 | |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 1488 | case HD_RESET_INTERRUPT_PIPE: |
| 1489 | /* error recovery escalation */ |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1490 | dev_err(cs->dev, |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 1491 | "reset interrupt pipe timeout, attempting USB reset\n"); |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1492 | usb_queue_reset_device(ucs->interface); |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 1493 | break; |
| 1494 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1495 | default: |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1496 | dev_warn(cs->dev, "request 0x%02x timed out, clearing\n", |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1497 | pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1498 | } |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1499 | |
| 1500 | wake_up(&ucs->waitqueue); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1501 | } |
| 1502 | |
| 1503 | /* write_ctrl_callback |
| 1504 | * USB completion handler for control pipe output |
| 1505 | * called by the USB subsystem in interrupt context |
| 1506 | * parameter: |
| 1507 | * urb USB request block of completed request |
| 1508 | * urb->context = hardware specific controller state structure |
| 1509 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1510 | static void write_ctrl_callback(struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1511 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1512 | struct bas_cardstate *ucs = urb->context; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1513 | int status = urb->status; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1514 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1515 | unsigned long flags; |
| 1516 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1517 | /* check status */ |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1518 | switch (status) { |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1519 | case 0: /* normal completion */ |
| 1520 | spin_lock_irqsave(&ucs->lock, flags); |
| 1521 | switch (ucs->pending) { |
| 1522 | case HD_DEVICE_INIT_ACK: /* no reply expected */ |
| 1523 | del_timer(&ucs->timer_ctrl); |
| 1524 | ucs->pending = 0; |
| 1525 | break; |
| 1526 | } |
| 1527 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1528 | return; |
| 1529 | |
| 1530 | case -ENOENT: /* cancelled */ |
| 1531 | case -ECONNRESET: /* cancelled (async) */ |
| 1532 | case -EINPROGRESS: /* pending */ |
| 1533 | case -ENODEV: /* device removed */ |
| 1534 | case -ESHUTDOWN: /* device shut down */ |
| 1535 | /* ignore silently */ |
| 1536 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1537 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1538 | break; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1539 | |
| 1540 | default: /* any failure */ |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1541 | /* don't retry if suspend requested */ |
| 1542 | if (++ucs->retry_ctrl > BAS_RETRY || |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1543 | (ucs->basstate & BS_SUSPEND)) { |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1544 | dev_err(&ucs->interface->dev, |
| 1545 | "control request 0x%02x failed: %s\n", |
| 1546 | ucs->dr_ctrl.bRequest, |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1547 | get_usb_statmsg(status)); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1548 | break; /* give up */ |
| 1549 | } |
| 1550 | dev_notice(&ucs->interface->dev, |
| 1551 | "control request 0x%02x: %s, retry %d\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1552 | ucs->dr_ctrl.bRequest, get_usb_statmsg(status), |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1553 | ucs->retry_ctrl); |
| 1554 | /* urb->dev is clobbered by USB subsystem */ |
| 1555 | urb->dev = ucs->udev; |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1556 | rc = usb_submit_urb(urb, GFP_ATOMIC); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1557 | if (unlikely(rc)) { |
| 1558 | dev_err(&ucs->interface->dev, |
| 1559 | "could not resubmit request 0x%02x: %s\n", |
| 1560 | ucs->dr_ctrl.bRequest, get_usb_rcmsg(rc)); |
| 1561 | break; |
| 1562 | } |
| 1563 | /* resubmitted */ |
| 1564 | return; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1565 | } |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1566 | |
| 1567 | /* failed, clear pending request */ |
| 1568 | spin_lock_irqsave(&ucs->lock, flags); |
| 1569 | del_timer(&ucs->timer_ctrl); |
| 1570 | ucs->pending = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1571 | spin_unlock_irqrestore(&ucs->lock, flags); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1572 | wake_up(&ucs->waitqueue); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1573 | } |
| 1574 | |
| 1575 | /* req_submit |
| 1576 | * submit a control output request without message buffer to the Gigaset base |
| 1577 | * and optionally start a timeout |
| 1578 | * parameters: |
| 1579 | * bcs B channel control structure |
| 1580 | * req control request code (HD_*) |
| 1581 | * val control request parameter value (set to 0 if unused) |
| 1582 | * timeout timeout in seconds (0: no timeout) |
| 1583 | * return value: |
| 1584 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1585 | * -EBUSY if another request is pending |
| 1586 | * any URB submission error code |
| 1587 | */ |
| 1588 | static int req_submit(struct bc_state *bcs, int req, int val, int timeout) |
| 1589 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1590 | struct bas_cardstate *ucs = bcs->cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1591 | int ret; |
| 1592 | unsigned long flags; |
| 1593 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1594 | gig_dbg(DEBUG_USBREQ, "-------> 0x%02x (%d)", req, val); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1595 | |
| 1596 | spin_lock_irqsave(&ucs->lock, flags); |
| 1597 | if (ucs->pending) { |
| 1598 | spin_unlock_irqrestore(&ucs->lock, flags); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1599 | dev_err(bcs->cs->dev, |
| 1600 | "submission of request 0x%02x failed: " |
| 1601 | "request 0x%02x still pending\n", |
| 1602 | req, ucs->pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1603 | return -EBUSY; |
| 1604 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1605 | |
| 1606 | ucs->dr_ctrl.bRequestType = OUT_VENDOR_REQ; |
| 1607 | ucs->dr_ctrl.bRequest = req; |
| 1608 | ucs->dr_ctrl.wValue = cpu_to_le16(val); |
| 1609 | ucs->dr_ctrl.wIndex = 0; |
| 1610 | ucs->dr_ctrl.wLength = 0; |
| 1611 | usb_fill_control_urb(ucs->urb_ctrl, ucs->udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1612 | usb_sndctrlpipe(ucs->udev, 0), |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1613 | (unsigned char *) &ucs->dr_ctrl, NULL, 0, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1614 | write_ctrl_callback, ucs); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1615 | ucs->retry_ctrl = 0; |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1616 | ret = usb_submit_urb(ucs->urb_ctrl, GFP_ATOMIC); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1617 | if (unlikely(ret)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1618 | dev_err(bcs->cs->dev, "could not submit request 0x%02x: %s\n", |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1619 | req, get_usb_rcmsg(ret)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1620 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1621 | return ret; |
| 1622 | } |
| 1623 | ucs->pending = req; |
| 1624 | |
| 1625 | if (timeout > 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1626 | gig_dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1627 | mod_timer(&ucs->timer_ctrl, jiffies + timeout * HZ / 10); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1628 | } |
| 1629 | |
| 1630 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1631 | return 0; |
| 1632 | } |
| 1633 | |
| 1634 | /* gigaset_init_bchannel |
| 1635 | * called by common.c to connect a B channel |
| 1636 | * initialize isochronous I/O and tell the Gigaset base to open the channel |
| 1637 | * argument: |
| 1638 | * B channel control structure |
| 1639 | * return value: |
| 1640 | * 0 on success, error code < 0 on error |
| 1641 | */ |
| 1642 | static int gigaset_init_bchannel(struct bc_state *bcs) |
| 1643 | { |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1644 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1645 | int req, ret; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1646 | unsigned long flags; |
| 1647 | |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1648 | spin_lock_irqsave(&cs->lock, flags); |
| 1649 | if (unlikely(!cs->connected)) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1650 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1651 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1652 | return -ENODEV; |
| 1653 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1654 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1655 | if (cs->hw.bas->basstate & BS_SUSPEND) { |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1656 | dev_notice(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1657 | "not starting isoc I/O, suspend in progress\n"); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1658 | spin_unlock_irqrestore(&cs->lock, flags); |
| 1659 | return -EHOSTUNREACH; |
| 1660 | } |
| 1661 | |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1662 | ret = starturbs(bcs); |
| 1663 | if (ret < 0) { |
Tilman Schmidt | b33ffa5 | 2010-09-30 13:34:30 +0000 | [diff] [blame] | 1664 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1665 | dev_err(cs->dev, |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 1666 | "could not start isoc I/O for channel B%d: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1667 | bcs->channel + 1, |
| 1668 | ret == -EFAULT ? "null URB" : get_usb_rcmsg(ret)); |
| 1669 | if (ret != -ENODEV) |
| 1670 | error_hangup(bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1671 | return ret; |
| 1672 | } |
| 1673 | |
| 1674 | req = bcs->channel ? HD_OPEN_B2CHANNEL : HD_OPEN_B1CHANNEL; |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1675 | ret = req_submit(bcs, req, 0, BAS_TIMEOUT); |
| 1676 | if (ret < 0) { |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1677 | dev_err(cs->dev, "could not open channel B%d\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1678 | bcs->channel + 1); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1679 | stopurbs(bcs->hw.bas); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1680 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1681 | |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1682 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | b33ffa5 | 2010-09-30 13:34:30 +0000 | [diff] [blame] | 1683 | if (ret < 0 && ret != -ENODEV) |
| 1684 | error_hangup(bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1685 | return ret; |
| 1686 | } |
| 1687 | |
| 1688 | /* gigaset_close_bchannel |
| 1689 | * called by common.c to disconnect a B channel |
| 1690 | * tell the Gigaset base to close the channel |
| 1691 | * stopping isochronous I/O and LL notification will be done when the |
| 1692 | * acknowledgement for the close arrives |
| 1693 | * argument: |
| 1694 | * B channel control structure |
| 1695 | * return value: |
| 1696 | * 0 on success, error code < 0 on error |
| 1697 | */ |
| 1698 | static int gigaset_close_bchannel(struct bc_state *bcs) |
| 1699 | { |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1700 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1701 | int req, ret; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1702 | unsigned long flags; |
| 1703 | |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1704 | spin_lock_irqsave(&cs->lock, flags); |
| 1705 | if (unlikely(!cs->connected)) { |
| 1706 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1707 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1708 | return -ENODEV; |
| 1709 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1710 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1711 | if (!(cs->hw.bas->basstate & (bcs->channel ? BS_B2OPEN : BS_B1OPEN))) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1712 | /* channel not running: just signal common.c */ |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1713 | spin_unlock_irqrestore(&cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1714 | gigaset_bchannel_down(bcs); |
| 1715 | return 0; |
| 1716 | } |
| 1717 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1718 | /* channel running: tell device to close it */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1719 | req = bcs->channel ? HD_CLOSE_B2CHANNEL : HD_CLOSE_B1CHANNEL; |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1720 | ret = req_submit(bcs, req, 0, BAS_TIMEOUT); |
| 1721 | if (ret < 0) |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1722 | dev_err(cs->dev, "closing channel B%d failed\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1723 | bcs->channel + 1); |
| 1724 | |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 1725 | spin_unlock_irqrestore(&cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1726 | return ret; |
| 1727 | } |
| 1728 | |
| 1729 | /* Device Operations */ |
| 1730 | /* ================= */ |
| 1731 | |
| 1732 | /* complete_cb |
| 1733 | * unqueue first command buffer from queue, waking any sleepers |
| 1734 | * must be called with cs->cmdlock held |
| 1735 | * parameter: |
| 1736 | * cs controller state structure |
| 1737 | */ |
| 1738 | static void complete_cb(struct cardstate *cs) |
| 1739 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1740 | struct cmdbuf_t *cb = cs->cmdbuf; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1741 | |
| 1742 | /* unqueue completed buffer */ |
| 1743 | cs->cmdbytes -= cs->curlen; |
Tilman Schmidt | 1528b18 | 2010-02-22 13:09:52 +0000 | [diff] [blame] | 1744 | gig_dbg(DEBUG_OUTPUT, "write_command: sent %u bytes, %u left", |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1745 | cs->curlen, cs->cmdbytes); |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1746 | if (cb->next != NULL) { |
| 1747 | cs->cmdbuf = cb->next; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1748 | cs->cmdbuf->prev = NULL; |
| 1749 | cs->curlen = cs->cmdbuf->len; |
| 1750 | } else { |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1751 | cs->cmdbuf = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1752 | cs->lastcmdbuf = NULL; |
| 1753 | cs->curlen = 0; |
| 1754 | } |
| 1755 | |
| 1756 | if (cb->wake_tasklet) |
| 1757 | tasklet_schedule(cb->wake_tasklet); |
| 1758 | |
| 1759 | kfree(cb); |
| 1760 | } |
| 1761 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1762 | /* write_command_callback |
| 1763 | * USB completion handler for AT command transmission |
| 1764 | * called by the USB subsystem in interrupt context |
| 1765 | * parameter: |
| 1766 | * urb USB request block of completed request |
| 1767 | * urb->context = controller state structure |
| 1768 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1769 | static void write_command_callback(struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1770 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1771 | struct cardstate *cs = urb->context; |
| 1772 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1773 | int status = urb->status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1774 | unsigned long flags; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1775 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1776 | update_basstate(ucs, 0, BS_ATWRPEND); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1777 | wake_up(&ucs->waitqueue); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1778 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1779 | /* check status */ |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1780 | switch (status) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1781 | case 0: /* normal completion */ |
| 1782 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1783 | case -ENOENT: /* cancelled */ |
| 1784 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1785 | case -EINPROGRESS: /* pending */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1786 | case -ENODEV: /* device removed */ |
| 1787 | case -ESHUTDOWN: /* device shut down */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1788 | /* ignore silently */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1789 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1790 | __func__, get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1791 | return; |
| 1792 | default: /* any failure */ |
| 1793 | if (++ucs->retry_cmd_out > BAS_RETRY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1794 | dev_warn(cs->dev, |
| 1795 | "command write: %s, " |
| 1796 | "giving up after %d retries\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1797 | get_usb_statmsg(status), |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1798 | ucs->retry_cmd_out); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1799 | break; |
| 1800 | } |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1801 | if (ucs->basstate & BS_SUSPEND) { |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1802 | dev_warn(cs->dev, |
| 1803 | "command write: %s, " |
| 1804 | "won't retry - suspend requested\n", |
| 1805 | get_usb_statmsg(status)); |
| 1806 | break; |
| 1807 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1808 | if (cs->cmdbuf == NULL) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1809 | dev_warn(cs->dev, |
| 1810 | "command write: %s, " |
| 1811 | "cannot retry - cmdbuf gone\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1812 | get_usb_statmsg(status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1813 | break; |
| 1814 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1815 | dev_notice(cs->dev, "command write: %s, retry %d\n", |
Tilman Schmidt | dbd9823 | 2008-02-06 01:38:23 -0800 | [diff] [blame] | 1816 | get_usb_statmsg(status), ucs->retry_cmd_out); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1817 | if (atwrite_submit(cs, cs->cmdbuf->buf, cs->cmdbuf->len) >= 0) |
| 1818 | /* resubmitted - bypass regular exit block */ |
| 1819 | return; |
| 1820 | /* command send failed, assume base still waiting */ |
| 1821 | update_basstate(ucs, BS_ATREADY, 0); |
| 1822 | } |
| 1823 | |
| 1824 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1825 | if (cs->cmdbuf != NULL) |
| 1826 | complete_cb(cs); |
| 1827 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1828 | } |
| 1829 | |
| 1830 | /* atrdy_timeout |
| 1831 | * timeout routine for AT command transmission |
| 1832 | * argument: |
| 1833 | * controller state structure |
| 1834 | */ |
| 1835 | static void atrdy_timeout(unsigned long data) |
| 1836 | { |
| 1837 | struct cardstate *cs = (struct cardstate *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1838 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1839 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1840 | dev_warn(cs->dev, "timeout waiting for HD_READY_SEND_ATDATA\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1841 | |
| 1842 | /* fake the missing signal - what else can I do? */ |
| 1843 | update_basstate(ucs, BS_ATREADY, BS_ATTIMER); |
| 1844 | start_cbsend(cs); |
| 1845 | } |
| 1846 | |
| 1847 | /* atwrite_submit |
| 1848 | * submit an HD_WRITE_ATMESSAGE command URB |
| 1849 | * parameters: |
| 1850 | * cs controller state structure |
| 1851 | * buf buffer containing command to send |
| 1852 | * len length of command to send |
| 1853 | * return value: |
| 1854 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1855 | * -EBUSY if another request is pending |
| 1856 | * any URB submission error code |
| 1857 | */ |
| 1858 | static int atwrite_submit(struct cardstate *cs, unsigned char *buf, int len) |
| 1859 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1860 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1861 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1862 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1863 | gig_dbg(DEBUG_USBREQ, "-------> HD_WRITE_ATMESSAGE (%d)", len); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1864 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1865 | if (update_basstate(ucs, BS_ATWRPEND, 0) & BS_ATWRPEND) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1866 | dev_err(cs->dev, |
| 1867 | "could not submit HD_WRITE_ATMESSAGE: URB busy\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1868 | return -EBUSY; |
| 1869 | } |
| 1870 | |
| 1871 | ucs->dr_cmd_out.bRequestType = OUT_VENDOR_REQ; |
| 1872 | ucs->dr_cmd_out.bRequest = HD_WRITE_ATMESSAGE; |
| 1873 | ucs->dr_cmd_out.wValue = 0; |
| 1874 | ucs->dr_cmd_out.wIndex = 0; |
| 1875 | ucs->dr_cmd_out.wLength = cpu_to_le16(len); |
| 1876 | usb_fill_control_urb(ucs->urb_cmd_out, ucs->udev, |
| 1877 | usb_sndctrlpipe(ucs->udev, 0), |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 1878 | (unsigned char *) &ucs->dr_cmd_out, buf, len, |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1879 | write_command_callback, cs); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1880 | rc = usb_submit_urb(ucs->urb_cmd_out, GFP_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1881 | if (unlikely(rc)) { |
| 1882 | update_basstate(ucs, 0, BS_ATWRPEND); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1883 | dev_err(cs->dev, "could not submit HD_WRITE_ATMESSAGE: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1884 | get_usb_rcmsg(rc)); |
| 1885 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1886 | } |
| 1887 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1888 | /* submitted successfully, start timeout if necessary */ |
| 1889 | if (!(update_basstate(ucs, BS_ATTIMER, BS_ATREADY) & BS_ATTIMER)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1890 | gig_dbg(DEBUG_OUTPUT, "setting ATREADY timeout of %d/10 secs", |
| 1891 | ATRDY_TIMEOUT); |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 1892 | mod_timer(&ucs->timer_atrdy, jiffies + ATRDY_TIMEOUT * HZ / 10); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1893 | } |
| 1894 | return 0; |
| 1895 | } |
| 1896 | |
| 1897 | /* start_cbsend |
| 1898 | * start transmission of AT command queue if necessary |
| 1899 | * parameter: |
| 1900 | * cs controller state structure |
| 1901 | * return value: |
| 1902 | * 0 on success |
| 1903 | * error code < 0 on error |
| 1904 | */ |
| 1905 | static int start_cbsend(struct cardstate *cs) |
| 1906 | { |
| 1907 | struct cmdbuf_t *cb; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1908 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1909 | unsigned long flags; |
| 1910 | int rc; |
| 1911 | int retval = 0; |
| 1912 | |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1913 | /* check if suspend requested */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1914 | if (ucs->basstate & BS_SUSPEND) { |
Tilman Schmidt | 1528b18 | 2010-02-22 13:09:52 +0000 | [diff] [blame] | 1915 | gig_dbg(DEBUG_OUTPUT, "suspending"); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 1916 | return -EHOSTUNREACH; |
| 1917 | } |
| 1918 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1919 | /* check if AT channel is open */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1920 | if (!(ucs->basstate & BS_ATOPEN)) { |
Tilman Schmidt | 1528b18 | 2010-02-22 13:09:52 +0000 | [diff] [blame] | 1921 | gig_dbg(DEBUG_OUTPUT, "AT channel not open"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1922 | rc = req_submit(cs->bcs, HD_OPEN_ATCHANNEL, 0, BAS_TIMEOUT); |
| 1923 | if (rc < 0) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1924 | /* flush command queue */ |
| 1925 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1926 | while (cs->cmdbuf != NULL) |
| 1927 | complete_cb(cs); |
| 1928 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1929 | } |
| 1930 | return rc; |
| 1931 | } |
| 1932 | |
| 1933 | /* try to send first command in queue */ |
| 1934 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1935 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1936 | while ((cb = cs->cmdbuf) != NULL && (ucs->basstate & BS_ATREADY)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1937 | ucs->retry_cmd_out = 0; |
| 1938 | rc = atwrite_submit(cs, cb->buf, cb->len); |
| 1939 | if (unlikely(rc)) { |
| 1940 | retval = rc; |
| 1941 | complete_cb(cs); |
| 1942 | } |
| 1943 | } |
| 1944 | |
| 1945 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1946 | return retval; |
| 1947 | } |
| 1948 | |
| 1949 | /* gigaset_write_cmd |
| 1950 | * This function is called by the device independent part of the driver |
| 1951 | * to transmit an AT command string to the Gigaset device. |
| 1952 | * It encapsulates the device specific method for transmission over the |
| 1953 | * direct USB connection to the base. |
| 1954 | * The command string is added to the queue of commands to send, and |
| 1955 | * USB transmission is started if necessary. |
| 1956 | * parameters: |
| 1957 | * cs controller state structure |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 1958 | * cb command buffer structure |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1959 | * return value: |
| 1960 | * number of bytes queued on success |
| 1961 | * error code < 0 on error |
| 1962 | */ |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 1963 | static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1964 | { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1965 | unsigned long flags; |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 1966 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1967 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 1968 | gigaset_dbg_buffer(cs->mstate != MS_LOCKED ? |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1969 | DEBUG_TRANSCMD : DEBUG_LOCKCMD, |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 1970 | "CMD Transmit", cb->len, cb->buf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1971 | |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 1972 | /* translate "+++" escape sequence sent as a single separate command |
| 1973 | * into "close AT channel" command for error recovery |
| 1974 | * The next command will reopen the AT channel automatically. |
| 1975 | */ |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 1976 | if (cb->len == 3 && !memcmp(cb->buf, "+++", 3)) { |
Tilman Schmidt | 4cb5e42 | 2010-09-30 13:35:31 +0000 | [diff] [blame] | 1977 | /* If an HD_RECEIVEATDATA_ACK message remains unhandled |
| 1978 | * because of an error, the base never sends another one. |
| 1979 | * The response channel is thus effectively blocked. |
| 1980 | * Closing and reopening the AT channel does *not* clear |
| 1981 | * this condition. |
| 1982 | * As a stopgap measure, submit a zero-length AT read |
| 1983 | * before closing the AT channel. This has the undocumented |
| 1984 | * effect of triggering a new HD_RECEIVEATDATA_ACK message |
| 1985 | * from the base if necessary. |
| 1986 | * The subsequent AT channel close then discards any pending |
| 1987 | * messages. |
| 1988 | */ |
| 1989 | spin_lock_irqsave(&cs->lock, flags); |
| 1990 | if (!(cs->hw.bas->basstate & BS_ATRDPEND)) { |
| 1991 | kfree(cs->hw.bas->rcvbuf); |
| 1992 | cs->hw.bas->rcvbuf = NULL; |
| 1993 | cs->hw.bas->rcvbuf_size = 0; |
| 1994 | cs->hw.bas->retry_cmd_in = 0; |
| 1995 | atread_submit(cs, 0); |
| 1996 | } |
| 1997 | spin_unlock_irqrestore(&cs->lock, flags); |
| 1998 | |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 1999 | rc = req_submit(cs->bcs, HD_CLOSE_ATCHANNEL, 0, BAS_TIMEOUT); |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 2000 | if (cb->wake_tasklet) |
| 2001 | tasklet_schedule(cb->wake_tasklet); |
Dan Carpenter | 8bcfbd0 | 2010-08-05 22:21:26 +0000 | [diff] [blame] | 2002 | if (!rc) |
| 2003 | rc = cb->len; |
| 2004 | kfree(cb); |
| 2005 | return rc; |
Tilman Schmidt | b5f581d | 2009-10-06 12:18:51 +0000 | [diff] [blame] | 2006 | } |
| 2007 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2008 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 2009 | cb->prev = cs->lastcmdbuf; |
| 2010 | if (cs->lastcmdbuf) |
| 2011 | cs->lastcmdbuf->next = cb; |
| 2012 | else { |
| 2013 | cs->cmdbuf = cb; |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 2014 | cs->curlen = cb->len; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2015 | } |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 2016 | cs->cmdbytes += cb->len; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2017 | cs->lastcmdbuf = cb; |
| 2018 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 2019 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2020 | spin_lock_irqsave(&cs->lock, flags); |
| 2021 | if (unlikely(!cs->connected)) { |
| 2022 | spin_unlock_irqrestore(&cs->lock, flags); |
| 2023 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 2024 | /* flush command queue */ |
| 2025 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 2026 | while (cs->cmdbuf != NULL) |
| 2027 | complete_cb(cs); |
| 2028 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2029 | return -ENODEV; |
| 2030 | } |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 2031 | rc = start_cbsend(cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2032 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | e3628dd | 2010-07-05 14:18:43 +0000 | [diff] [blame] | 2033 | return rc < 0 ? rc : cb->len; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2034 | } |
| 2035 | |
| 2036 | /* gigaset_write_room |
| 2037 | * tty_driver.write_room interface routine |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 2038 | * return number of characters the driver will accept to be written via |
| 2039 | * gigaset_write_cmd |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2040 | * parameter: |
| 2041 | * controller state structure |
| 2042 | * return value: |
| 2043 | * number of characters |
| 2044 | */ |
| 2045 | static int gigaset_write_room(struct cardstate *cs) |
| 2046 | { |
| 2047 | return IF_WRITEBUF; |
| 2048 | } |
| 2049 | |
| 2050 | /* gigaset_chars_in_buffer |
| 2051 | * tty_driver.chars_in_buffer interface routine |
| 2052 | * return number of characters waiting to be sent |
| 2053 | * parameter: |
| 2054 | * controller state structure |
| 2055 | * return value: |
| 2056 | * number of characters |
| 2057 | */ |
| 2058 | static int gigaset_chars_in_buffer(struct cardstate *cs) |
| 2059 | { |
Tilman Schmidt | 4d1ff58 | 2007-10-16 01:27:50 -0700 | [diff] [blame] | 2060 | return cs->cmdbytes; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2061 | } |
| 2062 | |
| 2063 | /* gigaset_brkchars |
| 2064 | * implementation of ioctl(GIGASET_BRKCHARS) |
| 2065 | * parameter: |
| 2066 | * controller state structure |
| 2067 | * return value: |
| 2068 | * -EINVAL (unimplemented function) |
| 2069 | */ |
| 2070 | static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) |
| 2071 | { |
| 2072 | return -EINVAL; |
| 2073 | } |
| 2074 | |
| 2075 | |
| 2076 | /* Device Initialization/Shutdown */ |
| 2077 | /* ============================== */ |
| 2078 | |
| 2079 | /* Free hardware dependent part of the B channel structure |
| 2080 | * parameter: |
| 2081 | * bcs B channel structure |
| 2082 | * return value: |
| 2083 | * !=0 on success |
| 2084 | */ |
| 2085 | static int gigaset_freebcshw(struct bc_state *bcs) |
| 2086 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2087 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 2088 | int i; |
| 2089 | |
| 2090 | if (!ubc) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2091 | return 0; |
| 2092 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2093 | /* kill URBs and tasklets before freeing - better safe than sorry */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2094 | ubc->running = 0; |
Tilman Schmidt | bb7196d | 2010-09-30 13:35:52 +0000 | [diff] [blame] | 2095 | gig_dbg(DEBUG_INIT, "%s: killing isoc URBs", __func__); |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 2096 | for (i = 0; i < BAS_OUTURBS; ++i) { |
| 2097 | usb_kill_urb(ubc->isoouturbs[i].urb); |
| 2098 | usb_free_urb(ubc->isoouturbs[i].urb); |
| 2099 | } |
| 2100 | for (i = 0; i < BAS_INURBS; ++i) { |
| 2101 | usb_kill_urb(ubc->isoinurbs[i]); |
| 2102 | usb_free_urb(ubc->isoinurbs[i]); |
| 2103 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2104 | tasklet_kill(&ubc->sent_tasklet); |
| 2105 | tasklet_kill(&ubc->rcvd_tasklet); |
| 2106 | kfree(ubc->isooutbuf); |
| 2107 | kfree(ubc); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2108 | bcs->hw.bas = NULL; |
| 2109 | return 1; |
| 2110 | } |
| 2111 | |
| 2112 | /* Initialize hardware dependent part of the B channel structure |
| 2113 | * parameter: |
| 2114 | * bcs B channel structure |
| 2115 | * return value: |
| 2116 | * !=0 on success |
| 2117 | */ |
| 2118 | static int gigaset_initbcshw(struct bc_state *bcs) |
| 2119 | { |
| 2120 | int i; |
| 2121 | struct bas_bc_state *ubc; |
| 2122 | |
| 2123 | bcs->hw.bas = ubc = kmalloc(sizeof(struct bas_bc_state), GFP_KERNEL); |
| 2124 | if (!ubc) { |
Tilman Schmidt | c8770dc | 2008-12-26 01:21:29 -0800 | [diff] [blame] | 2125 | pr_err("out of memory\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2126 | return 0; |
| 2127 | } |
| 2128 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2129 | ubc->running = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2130 | atomic_set(&ubc->corrbytes, 0); |
| 2131 | spin_lock_init(&ubc->isooutlock); |
| 2132 | for (i = 0; i < BAS_OUTURBS; ++i) { |
| 2133 | ubc->isoouturbs[i].urb = NULL; |
| 2134 | ubc->isoouturbs[i].bcs = bcs; |
| 2135 | } |
| 2136 | ubc->isooutdone = ubc->isooutfree = ubc->isooutovfl = NULL; |
| 2137 | ubc->numsub = 0; |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 2138 | ubc->isooutbuf = kmalloc(sizeof(struct isowbuf_t), GFP_KERNEL); |
| 2139 | if (!ubc->isooutbuf) { |
Tilman Schmidt | c8770dc | 2008-12-26 01:21:29 -0800 | [diff] [blame] | 2140 | pr_err("out of memory\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2141 | kfree(ubc); |
| 2142 | bcs->hw.bas = NULL; |
| 2143 | return 0; |
| 2144 | } |
| 2145 | tasklet_init(&ubc->sent_tasklet, |
Joe Perches | 5452fee | 2009-11-19 09:55:53 +0000 | [diff] [blame] | 2146 | write_iso_tasklet, (unsigned long) bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2147 | |
| 2148 | spin_lock_init(&ubc->isoinlock); |
| 2149 | for (i = 0; i < BAS_INURBS; ++i) |
| 2150 | ubc->isoinurbs[i] = NULL; |
| 2151 | ubc->isoindone = NULL; |
| 2152 | ubc->loststatus = -EINPROGRESS; |
| 2153 | ubc->isoinlost = 0; |
| 2154 | ubc->seqlen = 0; |
| 2155 | ubc->inbyte = 0; |
| 2156 | ubc->inbits = 0; |
| 2157 | ubc->goodbytes = 0; |
| 2158 | ubc->alignerrs = 0; |
| 2159 | ubc->fcserrs = 0; |
| 2160 | ubc->frameerrs = 0; |
| 2161 | ubc->giants = 0; |
| 2162 | ubc->runts = 0; |
| 2163 | ubc->aborts = 0; |
| 2164 | ubc->shared0s = 0; |
| 2165 | ubc->stolen0s = 0; |
| 2166 | tasklet_init(&ubc->rcvd_tasklet, |
Joe Perches | 5452fee | 2009-11-19 09:55:53 +0000 | [diff] [blame] | 2167 | read_iso_tasklet, (unsigned long) bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2168 | return 1; |
| 2169 | } |
| 2170 | |
| 2171 | static void gigaset_reinitbcshw(struct bc_state *bcs) |
| 2172 | { |
| 2173 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 2174 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2175 | bcs->hw.bas->running = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2176 | atomic_set(&bcs->hw.bas->corrbytes, 0); |
| 2177 | bcs->hw.bas->numsub = 0; |
| 2178 | spin_lock_init(&ubc->isooutlock); |
| 2179 | spin_lock_init(&ubc->isoinlock); |
| 2180 | ubc->loststatus = -EINPROGRESS; |
| 2181 | } |
| 2182 | |
| 2183 | static void gigaset_freecshw(struct cardstate *cs) |
| 2184 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2185 | /* timers, URBs and rcvbuf are disposed of in disconnect */ |
Tilman Schmidt | 170ebf8 | 2009-03-18 23:44:23 -0700 | [diff] [blame] | 2186 | kfree(cs->hw.bas->int_in_buf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2187 | kfree(cs->hw.bas); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2188 | cs->hw.bas = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2189 | } |
| 2190 | |
| 2191 | static int gigaset_initcshw(struct cardstate *cs) |
| 2192 | { |
| 2193 | struct bas_cardstate *ucs; |
| 2194 | |
| 2195 | cs->hw.bas = ucs = kmalloc(sizeof *ucs, GFP_KERNEL); |
Tilman Schmidt | c8770dc | 2008-12-26 01:21:29 -0800 | [diff] [blame] | 2196 | if (!ucs) { |
| 2197 | pr_err("out of memory\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2198 | return 0; |
Tilman Schmidt | c8770dc | 2008-12-26 01:21:29 -0800 | [diff] [blame] | 2199 | } |
Tilman Schmidt | 170ebf8 | 2009-03-18 23:44:23 -0700 | [diff] [blame] | 2200 | ucs->int_in_buf = kmalloc(IP_MSGSIZE, GFP_KERNEL); |
| 2201 | if (!ucs->int_in_buf) { |
| 2202 | kfree(ucs); |
| 2203 | pr_err("out of memory\n"); |
| 2204 | return 0; |
| 2205 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2206 | |
| 2207 | ucs->urb_cmd_in = NULL; |
| 2208 | ucs->urb_cmd_out = NULL; |
| 2209 | ucs->rcvbuf = NULL; |
| 2210 | ucs->rcvbuf_size = 0; |
| 2211 | |
| 2212 | spin_lock_init(&ucs->lock); |
| 2213 | ucs->pending = 0; |
| 2214 | |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2215 | ucs->basstate = 0; |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 2216 | setup_timer(&ucs->timer_ctrl, req_timeout, (unsigned long) cs); |
| 2217 | setup_timer(&ucs->timer_atrdy, atrdy_timeout, (unsigned long) cs); |
| 2218 | setup_timer(&ucs->timer_cmd_in, cmd_in_timeout, (unsigned long) cs); |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2219 | setup_timer(&ucs->timer_int_in, int_in_resubmit, (unsigned long) cs); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2220 | init_waitqueue_head(&ucs->waitqueue); |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2221 | INIT_WORK(&ucs->int_in_wq, int_in_work); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2222 | |
| 2223 | return 1; |
| 2224 | } |
| 2225 | |
| 2226 | /* freeurbs |
| 2227 | * unlink and deallocate all URBs unconditionally |
| 2228 | * caller must make sure that no commands are still in progress |
| 2229 | * parameter: |
| 2230 | * cs controller state structure |
| 2231 | */ |
| 2232 | static void freeurbs(struct cardstate *cs) |
| 2233 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 2234 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2235 | struct bas_bc_state *ubc; |
| 2236 | int i, j; |
| 2237 | |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 2238 | gig_dbg(DEBUG_INIT, "%s: killing URBs", __func__); |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 2239 | for (j = 0; j < BAS_CHANNELS; ++j) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2240 | ubc = cs->bcs[j].hw.bas; |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 2241 | for (i = 0; i < BAS_OUTURBS; ++i) { |
| 2242 | usb_kill_urb(ubc->isoouturbs[i].urb); |
| 2243 | usb_free_urb(ubc->isoouturbs[i].urb); |
| 2244 | ubc->isoouturbs[i].urb = NULL; |
| 2245 | } |
| 2246 | for (i = 0; i < BAS_INURBS; ++i) { |
| 2247 | usb_kill_urb(ubc->isoinurbs[i]); |
| 2248 | usb_free_urb(ubc->isoinurbs[i]); |
| 2249 | ubc->isoinurbs[i] = NULL; |
| 2250 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2251 | } |
Tilman Schmidt | 39f0722 | 2006-12-13 00:33:52 -0800 | [diff] [blame] | 2252 | usb_kill_urb(ucs->urb_int_in); |
| 2253 | usb_free_urb(ucs->urb_int_in); |
| 2254 | ucs->urb_int_in = NULL; |
| 2255 | usb_kill_urb(ucs->urb_cmd_out); |
| 2256 | usb_free_urb(ucs->urb_cmd_out); |
| 2257 | ucs->urb_cmd_out = NULL; |
| 2258 | usb_kill_urb(ucs->urb_cmd_in); |
| 2259 | usb_free_urb(ucs->urb_cmd_in); |
| 2260 | ucs->urb_cmd_in = NULL; |
| 2261 | usb_kill_urb(ucs->urb_ctrl); |
| 2262 | usb_free_urb(ucs->urb_ctrl); |
| 2263 | ucs->urb_ctrl = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2264 | } |
| 2265 | |
| 2266 | /* gigaset_probe |
| 2267 | * This function is called when a new USB device is connected. |
| 2268 | * It checks whether the new device is handled by this driver. |
| 2269 | */ |
| 2270 | static int gigaset_probe(struct usb_interface *interface, |
| 2271 | const struct usb_device_id *id) |
| 2272 | { |
| 2273 | struct usb_host_interface *hostif; |
| 2274 | struct usb_device *udev = interface_to_usbdev(interface); |
| 2275 | struct cardstate *cs = NULL; |
| 2276 | struct bas_cardstate *ucs = NULL; |
| 2277 | struct bas_bc_state *ubc; |
| 2278 | struct usb_endpoint_descriptor *endpoint; |
| 2279 | int i, j; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2280 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2281 | |
Tilman Schmidt | 1528b18 | 2010-02-22 13:09:52 +0000 | [diff] [blame] | 2282 | gig_dbg(DEBUG_INIT, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2283 | "%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", |
| 2284 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 2285 | le16_to_cpu(udev->descriptor.idProduct)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2286 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2287 | /* set required alternate setting */ |
| 2288 | hostif = interface->cur_altsetting; |
| 2289 | if (hostif->desc.bAlternateSetting != 3) { |
Tilman Schmidt | 1528b18 | 2010-02-22 13:09:52 +0000 | [diff] [blame] | 2290 | gig_dbg(DEBUG_INIT, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2291 | "%s: wrong alternate setting %d - trying to switch", |
| 2292 | __func__, hostif->desc.bAlternateSetting); |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 2293 | if (usb_set_interface(udev, hostif->desc.bInterfaceNumber, 3) |
| 2294 | < 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2295 | dev_warn(&udev->dev, "usb_set_interface failed, " |
| 2296 | "device %d interface %d altsetting %d\n", |
| 2297 | udev->devnum, hostif->desc.bInterfaceNumber, |
| 2298 | hostif->desc.bAlternateSetting); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2299 | return -ENODEV; |
| 2300 | } |
| 2301 | hostif = interface->cur_altsetting; |
| 2302 | } |
| 2303 | |
| 2304 | /* Reject application specific interfaces |
| 2305 | */ |
| 2306 | if (hostif->desc.bInterfaceClass != 255) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2307 | dev_warn(&udev->dev, "%s: bInterfaceClass == %d\n", |
| 2308 | __func__, hostif->desc.bInterfaceClass); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2309 | return -ENODEV; |
| 2310 | } |
| 2311 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2312 | dev_info(&udev->dev, |
| 2313 | "%s: Device matched (Vendor: 0x%x, Product: 0x%x)\n", |
| 2314 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 2315 | le16_to_cpu(udev->descriptor.idProduct)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2316 | |
Uwe Kleine-König | b595076 | 2010-11-01 15:38:34 -0400 | [diff] [blame] | 2317 | /* allocate memory for our device state and initialize it */ |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2318 | cs = gigaset_initcs(driver, BAS_CHANNELS, 0, 0, cidmode, |
| 2319 | GIGASET_MODULENAME); |
| 2320 | if (!cs) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2321 | return -ENODEV; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2322 | ucs = cs->hw.bas; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2323 | |
| 2324 | /* save off device structure ptrs for later use */ |
| 2325 | usb_get_dev(udev); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2326 | ucs->udev = udev; |
| 2327 | ucs->interface = interface; |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2328 | cs->dev = &interface->dev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2329 | |
| 2330 | /* allocate URBs: |
| 2331 | * - one for the interrupt pipe |
| 2332 | * - three for the different uses of the default control pipe |
| 2333 | * - three for each isochronous pipe |
| 2334 | */ |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2335 | if (!(ucs->urb_int_in = usb_alloc_urb(0, GFP_KERNEL)) || |
| 2336 | !(ucs->urb_cmd_in = usb_alloc_urb(0, GFP_KERNEL)) || |
| 2337 | !(ucs->urb_cmd_out = usb_alloc_urb(0, GFP_KERNEL)) || |
| 2338 | !(ucs->urb_ctrl = usb_alloc_urb(0, GFP_KERNEL))) |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2339 | goto allocerr; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2340 | |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 2341 | for (j = 0; j < BAS_CHANNELS; ++j) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2342 | ubc = cs->bcs[j].hw.bas; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2343 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 2344 | if (!(ubc->isoouturbs[i].urb = |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2345 | usb_alloc_urb(BAS_NUMFRAMES, GFP_KERNEL))) |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2346 | goto allocerr; |
| 2347 | for (i = 0; i < BAS_INURBS; ++i) |
| 2348 | if (!(ubc->isoinurbs[i] = |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2349 | usb_alloc_urb(BAS_NUMFRAMES, GFP_KERNEL))) |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2350 | goto allocerr; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2351 | } |
| 2352 | |
| 2353 | ucs->rcvbuf = NULL; |
| 2354 | ucs->rcvbuf_size = 0; |
| 2355 | |
| 2356 | /* Fill the interrupt urb and send it to the core */ |
| 2357 | endpoint = &hostif->endpoint[0].desc; |
| 2358 | usb_fill_int_urb(ucs->urb_int_in, udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2359 | usb_rcvintpipe(udev, |
| 2360 | (endpoint->bEndpointAddress) & 0x0f), |
Tilman Schmidt | 170ebf8 | 2009-03-18 23:44:23 -0700 | [diff] [blame] | 2361 | ucs->int_in_buf, IP_MSGSIZE, read_int_callback, cs, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2362 | endpoint->bInterval); |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 2363 | rc = usb_submit_urb(ucs->urb_int_in, GFP_KERNEL); |
| 2364 | if (rc != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2365 | dev_err(cs->dev, "could not submit interrupt URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2366 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2367 | goto error; |
| 2368 | } |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2369 | ucs->retry_int_in = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2370 | |
| 2371 | /* tell the device that the driver is ready */ |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 2372 | rc = req_submit(cs->bcs, HD_DEVICE_INIT_ACK, 0, 0); |
| 2373 | if (rc != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2374 | goto error; |
| 2375 | |
| 2376 | /* tell common part that the device is ready */ |
| 2377 | if (startmode == SM_LOCKED) |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2378 | cs->mstate = MS_LOCKED; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2379 | |
| 2380 | /* save address of controller structure */ |
| 2381 | usb_set_intfdata(interface, cs); |
| 2382 | |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2383 | if (!gigaset_start(cs)) |
| 2384 | goto error; |
| 2385 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2386 | return 0; |
| 2387 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2388 | allocerr: |
| 2389 | dev_err(cs->dev, "could not allocate URBs\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2390 | error: |
| 2391 | freeurbs(cs); |
Tilman Schmidt | 69049cc | 2006-04-10 22:55:16 -0700 | [diff] [blame] | 2392 | usb_set_intfdata(interface, NULL); |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2393 | gigaset_freecs(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2394 | return -ENODEV; |
| 2395 | } |
| 2396 | |
| 2397 | /* gigaset_disconnect |
| 2398 | * This function is called when the Gigaset base is unplugged. |
| 2399 | */ |
| 2400 | static void gigaset_disconnect(struct usb_interface *interface) |
| 2401 | { |
| 2402 | struct cardstate *cs; |
| 2403 | struct bas_cardstate *ucs; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2404 | int j; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2405 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2406 | cs = usb_get_intfdata(interface); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2407 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2408 | ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2409 | |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2410 | dev_info(cs->dev, "disconnecting Gigaset base\n"); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2411 | |
| 2412 | /* mark base as not ready, all channels disconnected */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2413 | ucs->basstate = 0; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2414 | |
| 2415 | /* tell LL all channels are down */ |
Tilman Schmidt | c652cbd | 2008-02-06 01:38:24 -0800 | [diff] [blame] | 2416 | for (j = 0; j < BAS_CHANNELS; ++j) |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2417 | gigaset_bchannel_down(cs->bcs + j); |
| 2418 | |
| 2419 | /* stop driver (common part) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2420 | gigaset_stop(cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2421 | |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2422 | /* stop delayed work and URBs, free ressources */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2423 | del_timer_sync(&ucs->timer_ctrl); |
| 2424 | del_timer_sync(&ucs->timer_atrdy); |
| 2425 | del_timer_sync(&ucs->timer_cmd_in); |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2426 | del_timer_sync(&ucs->timer_int_in); |
| 2427 | cancel_work_sync(&ucs->int_in_wq); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2428 | freeurbs(cs); |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2429 | usb_set_intfdata(interface, NULL); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2430 | kfree(ucs->rcvbuf); |
| 2431 | ucs->rcvbuf = NULL; |
| 2432 | ucs->rcvbuf_size = 0; |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2433 | usb_put_dev(ucs->udev); |
| 2434 | ucs->interface = NULL; |
| 2435 | ucs->udev = NULL; |
| 2436 | cs->dev = NULL; |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2437 | gigaset_freecs(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2438 | } |
| 2439 | |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2440 | /* gigaset_suspend |
| 2441 | * This function is called before the USB connection is suspended. |
| 2442 | */ |
| 2443 | static int gigaset_suspend(struct usb_interface *intf, pm_message_t message) |
| 2444 | { |
| 2445 | struct cardstate *cs = usb_get_intfdata(intf); |
| 2446 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2447 | int rc; |
| 2448 | |
| 2449 | /* set suspend flag; this stops AT command/response traffic */ |
| 2450 | if (update_basstate(ucs, BS_SUSPEND, 0) & BS_SUSPEND) { |
| 2451 | gig_dbg(DEBUG_SUSPEND, "already suspended"); |
| 2452 | return 0; |
| 2453 | } |
| 2454 | |
| 2455 | /* wait a bit for blocking conditions to go away */ |
| 2456 | rc = wait_event_timeout(ucs->waitqueue, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2457 | !(ucs->basstate & |
| 2458 | (BS_B1OPEN | BS_B2OPEN | BS_ATRDPEND | BS_ATWRPEND)), |
| 2459 | BAS_TIMEOUT * HZ / 10); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2460 | gig_dbg(DEBUG_SUSPEND, "wait_event_timeout() -> %d", rc); |
| 2461 | |
| 2462 | /* check for conditions preventing suspend */ |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2463 | if (ucs->basstate & (BS_B1OPEN | BS_B2OPEN | BS_ATRDPEND | BS_ATWRPEND)) { |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2464 | dev_warn(cs->dev, "cannot suspend:\n"); |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2465 | if (ucs->basstate & BS_B1OPEN) |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2466 | dev_warn(cs->dev, " B channel 1 open\n"); |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2467 | if (ucs->basstate & BS_B2OPEN) |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2468 | dev_warn(cs->dev, " B channel 2 open\n"); |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2469 | if (ucs->basstate & BS_ATRDPEND) |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2470 | dev_warn(cs->dev, " receiving AT reply\n"); |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2471 | if (ucs->basstate & BS_ATWRPEND) |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2472 | dev_warn(cs->dev, " sending AT command\n"); |
| 2473 | update_basstate(ucs, 0, BS_SUSPEND); |
| 2474 | return -EBUSY; |
| 2475 | } |
| 2476 | |
| 2477 | /* close AT channel if open */ |
Tilman Schmidt | 9d4bee2 | 2008-02-06 01:38:28 -0800 | [diff] [blame] | 2478 | if (ucs->basstate & BS_ATOPEN) { |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2479 | gig_dbg(DEBUG_SUSPEND, "closing AT channel"); |
| 2480 | rc = req_submit(cs->bcs, HD_CLOSE_ATCHANNEL, 0, 0); |
| 2481 | if (rc) { |
| 2482 | update_basstate(ucs, 0, BS_SUSPEND); |
| 2483 | return rc; |
| 2484 | } |
| 2485 | wait_event_timeout(ucs->waitqueue, !ucs->pending, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 2486 | BAS_TIMEOUT * HZ / 10); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2487 | /* in case of timeout, proceed anyway */ |
| 2488 | } |
| 2489 | |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2490 | /* kill all URBs and delayed work that might still be pending */ |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2491 | usb_kill_urb(ucs->urb_ctrl); |
| 2492 | usb_kill_urb(ucs->urb_int_in); |
| 2493 | del_timer_sync(&ucs->timer_ctrl); |
Tilman Schmidt | 1d5a9ed | 2010-09-30 13:35:11 +0000 | [diff] [blame] | 2494 | del_timer_sync(&ucs->timer_atrdy); |
| 2495 | del_timer_sync(&ucs->timer_cmd_in); |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2496 | del_timer_sync(&ucs->timer_int_in); |
| 2497 | cancel_work_sync(&ucs->int_in_wq); |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2498 | |
| 2499 | gig_dbg(DEBUG_SUSPEND, "suspend complete"); |
| 2500 | return 0; |
| 2501 | } |
| 2502 | |
| 2503 | /* gigaset_resume |
| 2504 | * This function is called after the USB connection has been resumed. |
| 2505 | */ |
| 2506 | static int gigaset_resume(struct usb_interface *intf) |
| 2507 | { |
| 2508 | struct cardstate *cs = usb_get_intfdata(intf); |
| 2509 | struct bas_cardstate *ucs = cs->hw.bas; |
| 2510 | int rc; |
| 2511 | |
| 2512 | /* resubmit interrupt URB for spontaneous messages from base */ |
| 2513 | rc = usb_submit_urb(ucs->urb_int_in, GFP_KERNEL); |
| 2514 | if (rc) { |
| 2515 | dev_err(cs->dev, "could not resubmit interrupt URB: %s\n", |
| 2516 | get_usb_rcmsg(rc)); |
| 2517 | return rc; |
| 2518 | } |
Tilman Schmidt | c9c0c30 | 2010-09-30 13:35:42 +0000 | [diff] [blame] | 2519 | ucs->retry_int_in = 0; |
Tilman Schmidt | 024fd29 | 2008-02-06 01:38:26 -0800 | [diff] [blame] | 2520 | |
| 2521 | /* clear suspend flag to reallow activity */ |
| 2522 | update_basstate(ucs, 0, BS_SUSPEND); |
| 2523 | |
| 2524 | gig_dbg(DEBUG_SUSPEND, "resume complete"); |
| 2525 | return 0; |
| 2526 | } |
| 2527 | |
| 2528 | /* gigaset_pre_reset |
| 2529 | * This function is called before the USB connection is reset. |
| 2530 | */ |
| 2531 | static int gigaset_pre_reset(struct usb_interface *intf) |
| 2532 | { |
| 2533 | /* handle just like suspend */ |
| 2534 | return gigaset_suspend(intf, PMSG_ON); |
| 2535 | } |
| 2536 | |
| 2537 | /* gigaset_post_reset |
| 2538 | * This function is called after the USB connection has been reset. |
| 2539 | */ |
| 2540 | static int gigaset_post_reset(struct usb_interface *intf) |
| 2541 | { |
| 2542 | /* FIXME: send HD_DEVICE_INIT_ACK? */ |
| 2543 | |
| 2544 | /* resume operations */ |
| 2545 | return gigaset_resume(intf); |
| 2546 | } |
| 2547 | |
| 2548 | |
Tilman Schmidt | 35dc845 | 2007-03-29 01:20:34 -0700 | [diff] [blame] | 2549 | static const struct gigaset_ops gigops = { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2550 | gigaset_write_cmd, |
| 2551 | gigaset_write_room, |
| 2552 | gigaset_chars_in_buffer, |
| 2553 | gigaset_brkchars, |
| 2554 | gigaset_init_bchannel, |
| 2555 | gigaset_close_bchannel, |
| 2556 | gigaset_initbcshw, |
| 2557 | gigaset_freebcshw, |
| 2558 | gigaset_reinitbcshw, |
| 2559 | gigaset_initcshw, |
| 2560 | gigaset_freecshw, |
| 2561 | gigaset_set_modem_ctrl, |
| 2562 | gigaset_baud_rate, |
| 2563 | gigaset_set_line_ctrl, |
| 2564 | gigaset_isoc_send_skb, |
| 2565 | gigaset_isoc_input, |
| 2566 | }; |
| 2567 | |
| 2568 | /* bas_gigaset_init |
| 2569 | * This function is called after the kernel module is loaded. |
| 2570 | */ |
| 2571 | static int __init bas_gigaset_init(void) |
| 2572 | { |
| 2573 | int result; |
| 2574 | |
Uwe Kleine-König | b595076 | 2010-11-01 15:38:34 -0400 | [diff] [blame] | 2575 | /* allocate memory for our driver state and initialize it */ |
Tilman Schmidt | 7891adf | 2009-10-25 09:30:37 +0000 | [diff] [blame] | 2576 | driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, |
| 2577 | GIGASET_MODULENAME, GIGASET_DEVNAME, |
| 2578 | &gigops, THIS_MODULE); |
| 2579 | if (driver == NULL) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2580 | goto error; |
| 2581 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2582 | /* register this driver with the USB subsystem */ |
| 2583 | result = usb_register(&gigaset_usb_driver); |
| 2584 | if (result < 0) { |
Tilman Schmidt | c8770dc | 2008-12-26 01:21:29 -0800 | [diff] [blame] | 2585 | pr_err("error %d registering USB driver\n", -result); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2586 | goto error; |
| 2587 | } |
| 2588 | |
Tilman Schmidt | c8770dc | 2008-12-26 01:21:29 -0800 | [diff] [blame] | 2589 | pr_info(DRIVER_DESC "\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2590 | return 0; |
| 2591 | |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2592 | error: |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2593 | if (driver) |
| 2594 | gigaset_freedriver(driver); |
| 2595 | driver = NULL; |
| 2596 | return -1; |
| 2597 | } |
| 2598 | |
| 2599 | /* bas_gigaset_exit |
| 2600 | * This function is called before the kernel module is unloaded. |
| 2601 | */ |
| 2602 | static void __exit bas_gigaset_exit(void) |
| 2603 | { |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2604 | struct bas_cardstate *ucs; |
| 2605 | int i; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2606 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2607 | gigaset_blockdriver(driver); /* => probe will fail |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2608 | * => no gigaset_start any more |
| 2609 | */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2610 | |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2611 | /* stop all connected devices */ |
| 2612 | for (i = 0; i < driver->minors; i++) { |
| 2613 | if (gigaset_shutdown(driver->cs + i) < 0) |
| 2614 | continue; /* no device */ |
| 2615 | /* from now on, no isdn callback should be possible */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2616 | |
Tilman Schmidt | e468c04 | 2008-02-06 01:38:29 -0800 | [diff] [blame] | 2617 | /* close all still open channels */ |
| 2618 | ucs = driver->cs[i].hw.bas; |
| 2619 | if (ucs->basstate & BS_B1OPEN) { |
| 2620 | gig_dbg(DEBUG_INIT, "closing B1 channel"); |
| 2621 | usb_control_msg(ucs->udev, |
| 2622 | usb_sndctrlpipe(ucs->udev, 0), |
| 2623 | HD_CLOSE_B1CHANNEL, OUT_VENDOR_REQ, |
| 2624 | 0, 0, NULL, 0, BAS_TIMEOUT); |
| 2625 | } |
| 2626 | if (ucs->basstate & BS_B2OPEN) { |
| 2627 | gig_dbg(DEBUG_INIT, "closing B2 channel"); |
| 2628 | usb_control_msg(ucs->udev, |
| 2629 | usb_sndctrlpipe(ucs->udev, 0), |
| 2630 | HD_CLOSE_B2CHANNEL, OUT_VENDOR_REQ, |
| 2631 | 0, 0, NULL, 0, BAS_TIMEOUT); |
| 2632 | } |
| 2633 | if (ucs->basstate & BS_ATOPEN) { |
| 2634 | gig_dbg(DEBUG_INIT, "closing AT channel"); |
| 2635 | usb_control_msg(ucs->udev, |
| 2636 | usb_sndctrlpipe(ucs->udev, 0), |
| 2637 | HD_CLOSE_ATCHANNEL, OUT_VENDOR_REQ, |
| 2638 | 0, 0, NULL, 0, BAS_TIMEOUT); |
| 2639 | } |
| 2640 | ucs->basstate = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2641 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2642 | |
| 2643 | /* deregister this driver with the USB subsystem */ |
| 2644 | usb_deregister(&gigaset_usb_driver); |
| 2645 | /* this will call the disconnect-callback */ |
| 2646 | /* from now on, no disconnect/probe callback should be running */ |
| 2647 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2648 | gigaset_freedriver(driver); |
| 2649 | driver = NULL; |
| 2650 | } |
| 2651 | |
| 2652 | |
| 2653 | module_init(bas_gigaset_init); |
| 2654 | module_exit(bas_gigaset_exit); |
| 2655 | |
| 2656 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 2657 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 2658 | MODULE_LICENSE("GPL"); |