Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 2 | * usblp.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (c) 1999 Michael Gee <michael@linuxspecific.com> |
| 5 | * Copyright (c) 1999 Pavel Machek <pavel@suse.cz> |
Adrian Bunk | f4b09eb | 2006-01-03 13:37:51 +0100 | [diff] [blame] | 6 | * Copyright (c) 2000 Randy Dunlap <rdunlap@xenotime.net> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz> |
| 8 | # Copyright (c) 2001 Pete Zaitcev <zaitcev@redhat.com> |
| 9 | # Copyright (c) 2001 David Paschal <paschal@rcsis.com> |
Oliver Neukum | 8e695cd | 2006-01-07 21:35:20 +0100 | [diff] [blame] | 10 | * Copyright (c) 2006 Oliver Neukum <oliver@neukum.name> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | * USB Printer Device Class driver for USB printers and printer cables |
| 13 | * |
| 14 | * Sponsored by SuSE |
| 15 | * |
| 16 | * ChangeLog: |
| 17 | * v0.1 - thorough cleaning, URBification, almost a rewrite |
| 18 | * v0.2 - some more cleanups |
| 19 | * v0.3 - cleaner again, waitqueue fixes |
| 20 | * v0.4 - fixes in unidirectional mode |
| 21 | * v0.5 - add DEVICE_ID string support |
| 22 | * v0.6 - never time out |
| 23 | * v0.7 - fixed bulk-IN read and poll (David Paschal) |
| 24 | * v0.8 - add devfs support |
| 25 | * v0.9 - fix unplug-while-open paths |
| 26 | * v0.10- remove sleep_on, fix error on oom (oliver@neukum.org) |
| 27 | * v0.11 - add proto_bias option (Pete Zaitcev) |
| 28 | * v0.12 - add hpoj.sourceforge.net ioctls (David Paschal) |
| 29 | * v0.13 - alloc space for statusbuf (<status> not on stack); |
| 30 | * use usb_buffer_alloc() for read buf & write buf; |
Pete Zaitcev | 283face | 2007-08-13 22:54:29 -0700 | [diff] [blame] | 31 | * none - Maintained in Linux kernel after v0.13 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | */ |
| 33 | |
| 34 | /* |
| 35 | * This program is free software; you can redistribute it and/or modify |
| 36 | * it under the terms of the GNU General Public License as published by |
| 37 | * the Free Software Foundation; either version 2 of the License, or |
| 38 | * (at your option) any later version. |
| 39 | * |
| 40 | * This program is distributed in the hope that it will be useful, |
| 41 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 42 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 43 | * GNU General Public License for more details. |
| 44 | * |
| 45 | * You should have received a copy of the GNU General Public License |
| 46 | * along with this program; if not, write to the Free Software |
| 47 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 48 | */ |
| 49 | |
| 50 | #include <linux/module.h> |
| 51 | #include <linux/kernel.h> |
| 52 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <linux/signal.h> |
| 54 | #include <linux/poll.h> |
| 55 | #include <linux/init.h> |
| 56 | #include <linux/slab.h> |
| 57 | #include <linux/lp.h> |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 58 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #undef DEBUG |
| 60 | #include <linux/usb.h> |
| 61 | |
| 62 | /* |
| 63 | * Version Information |
| 64 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #define DRIVER_AUTHOR "Michael Gee, Pavel Machek, Vojtech Pavlik, Randy Dunlap, Pete Zaitcev, David Paschal" |
| 66 | #define DRIVER_DESC "USB Printer Device Class driver" |
| 67 | |
| 68 | #define USBLP_BUF_SIZE 8192 |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 69 | #define USBLP_BUF_SIZE_IN 1024 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #define USBLP_DEVICE_ID_SIZE 1024 |
| 71 | |
| 72 | /* ioctls: */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | #define IOCNR_GET_DEVICE_ID 1 |
| 74 | #define IOCNR_GET_PROTOCOLS 2 |
| 75 | #define IOCNR_SET_PROTOCOL 3 |
| 76 | #define IOCNR_HP_SET_CHANNEL 4 |
| 77 | #define IOCNR_GET_BUS_ADDRESS 5 |
| 78 | #define IOCNR_GET_VID_PID 6 |
| 79 | #define IOCNR_SOFT_RESET 7 |
| 80 | /* Get device_id string: */ |
| 81 | #define LPIOC_GET_DEVICE_ID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, len) |
| 82 | /* The following ioctls were added for http://hpoj.sourceforge.net: */ |
| 83 | /* Get two-int array: |
| 84 | * [0]=current protocol (1=7/1/1, 2=7/1/2, 3=7/1/3), |
| 85 | * [1]=supported protocol mask (mask&(1<<n)!=0 means 7/1/n supported): */ |
| 86 | #define LPIOC_GET_PROTOCOLS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_PROTOCOLS, len) |
| 87 | /* Set protocol (arg: 1=7/1/1, 2=7/1/2, 3=7/1/3): */ |
| 88 | #define LPIOC_SET_PROTOCOL _IOC(_IOC_WRITE, 'P', IOCNR_SET_PROTOCOL, 0) |
| 89 | /* Set channel number (HP Vendor-specific command): */ |
| 90 | #define LPIOC_HP_SET_CHANNEL _IOC(_IOC_WRITE, 'P', IOCNR_HP_SET_CHANNEL, 0) |
| 91 | /* Get two-int array: [0]=bus number, [1]=device address: */ |
| 92 | #define LPIOC_GET_BUS_ADDRESS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_BUS_ADDRESS, len) |
| 93 | /* Get two-int array: [0]=vendor ID, [1]=product ID: */ |
| 94 | #define LPIOC_GET_VID_PID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_VID_PID, len) |
| 95 | /* Perform class specific soft reset */ |
| 96 | #define LPIOC_SOFT_RESET _IOC(_IOC_NONE, 'P', IOCNR_SOFT_RESET, 0); |
| 97 | |
| 98 | /* |
| 99 | * A DEVICE_ID string may include the printer's serial number. |
| 100 | * It should end with a semi-colon (';'). |
| 101 | * An example from an HP 970C DeskJet printer is (this is one long string, |
| 102 | * with the serial number changed): |
| 103 | MFG:HEWLETT-PACKARD;MDL:DESKJET 970C;CMD:MLC,PCL,PML;CLASS:PRINTER;DESCRIPTION:Hewlett-Packard DeskJet 970C;SERN:US970CSEPROF;VSTATUS:$HB0$NC0,ff,DN,IDLE,CUT,K1,C0,DP,NR,KP000,CP027;VP:0800,FL,B0;VJ: ; |
| 104 | */ |
| 105 | |
| 106 | /* |
| 107 | * USB Printer Requests |
| 108 | */ |
| 109 | |
| 110 | #define USBLP_REQ_GET_ID 0x00 |
| 111 | #define USBLP_REQ_GET_STATUS 0x01 |
| 112 | #define USBLP_REQ_RESET 0x02 |
| 113 | #define USBLP_REQ_HP_CHANNEL_CHANGE_REQUEST 0x00 /* HP Vendor-specific */ |
| 114 | |
| 115 | #define USBLP_MINORS 16 |
| 116 | #define USBLP_MINOR_BASE 0 |
| 117 | |
Pete Zaitcev | 283face | 2007-08-13 22:54:29 -0700 | [diff] [blame] | 118 | #define USBLP_CTL_TIMEOUT 5000 /* 5 seconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
| 120 | #define USBLP_FIRST_PROTOCOL 1 |
| 121 | #define USBLP_LAST_PROTOCOL 3 |
| 122 | #define USBLP_MAX_PROTOCOLS (USBLP_LAST_PROTOCOL+1) |
| 123 | |
| 124 | /* |
| 125 | * some arbitrary status buffer size; |
| 126 | * need a status buffer that is allocated via kmalloc(), not on stack |
| 127 | */ |
| 128 | #define STATUS_BUF_SIZE 8 |
| 129 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 130 | /* |
| 131 | * Locks down the locking order: |
| 132 | * ->wmut locks wstatus. |
| 133 | * ->mut locks the whole usblp, except [rw]complete, and thus, by indirection, |
| 134 | * [rw]status. We only touch status when we know the side idle. |
| 135 | * ->lock locks what interrupt accesses. |
| 136 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | struct usblp { |
| 138 | struct usb_device *dev; /* USB device */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 139 | struct mutex wmut; |
| 140 | struct mutex mut; |
| 141 | spinlock_t lock; /* locks rcomplete, wcomplete */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | char *readbuf; /* read transfer_buffer */ |
| 143 | char *statusbuf; /* status transfer_buffer */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 144 | struct usb_anchor urbs; |
| 145 | wait_queue_head_t rwait, wwait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | int readcount; /* Counter for reads */ |
| 147 | int ifnum; /* Interface number */ |
| 148 | struct usb_interface *intf; /* The interface */ |
| 149 | /* Alternate-setting numbers and endpoints for each protocol |
| 150 | * (7/1/{index=1,2,3}) that the device supports: */ |
| 151 | struct { |
| 152 | int alt_setting; |
| 153 | struct usb_endpoint_descriptor *epwrite; |
| 154 | struct usb_endpoint_descriptor *epread; |
| 155 | } protocol[USBLP_MAX_PROTOCOLS]; |
| 156 | int current_protocol; |
| 157 | int minor; /* minor number of device */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 158 | int wcomplete, rcomplete; |
| 159 | int wstatus; /* bytes written or error */ |
| 160 | int rstatus; /* bytes ready or error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | unsigned int quirks; /* quirks flags */ |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 162 | unsigned int flags; /* mode flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | unsigned char used; /* True if open */ |
| 164 | unsigned char present; /* True if not disconnected */ |
| 165 | unsigned char bidir; /* interface is bidirectional */ |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 166 | unsigned char sleeping; /* interface is suspended */ |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 167 | unsigned char no_paper; /* Paper Out happened */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | unsigned char *device_id_string; /* IEEE 1284 DEVICE ID string (ptr) */ |
| 169 | /* first 2 bytes are (big-endian) length */ |
| 170 | }; |
| 171 | |
| 172 | #ifdef DEBUG |
| 173 | static void usblp_dump(struct usblp *usblp) { |
| 174 | int p; |
| 175 | |
| 176 | dbg("usblp=0x%p", usblp); |
| 177 | dbg("dev=0x%p", usblp->dev); |
| 178 | dbg("present=%d", usblp->present); |
| 179 | dbg("readbuf=0x%p", usblp->readbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | dbg("readcount=%d", usblp->readcount); |
| 181 | dbg("ifnum=%d", usblp->ifnum); |
| 182 | for (p = USBLP_FIRST_PROTOCOL; p <= USBLP_LAST_PROTOCOL; p++) { |
| 183 | dbg("protocol[%d].alt_setting=%d", p, usblp->protocol[p].alt_setting); |
| 184 | dbg("protocol[%d].epwrite=%p", p, usblp->protocol[p].epwrite); |
| 185 | dbg("protocol[%d].epread=%p", p, usblp->protocol[p].epread); |
| 186 | } |
| 187 | dbg("current_protocol=%d", usblp->current_protocol); |
| 188 | dbg("minor=%d", usblp->minor); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 189 | dbg("wstatus=%d", usblp->wstatus); |
| 190 | dbg("rstatus=%d", usblp->rstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | dbg("quirks=%d", usblp->quirks); |
| 192 | dbg("used=%d", usblp->used); |
| 193 | dbg("bidir=%d", usblp->bidir); |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 194 | dbg("sleeping=%d", usblp->sleeping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | dbg("device_id_string=\"%s\"", |
| 196 | usblp->device_id_string ? |
| 197 | usblp->device_id_string + 2 : |
| 198 | (unsigned char *)"(null)"); |
| 199 | } |
| 200 | #endif |
| 201 | |
| 202 | /* Quirks: various printer quirks are handled by this table & its flags. */ |
| 203 | |
| 204 | struct quirk_printer_struct { |
| 205 | __u16 vendorId; |
| 206 | __u16 productId; |
| 207 | unsigned int quirks; |
| 208 | }; |
| 209 | |
| 210 | #define USBLP_QUIRK_BIDIR 0x1 /* reports bidir but requires unidirectional mode (no INs/reads) */ |
| 211 | #define USBLP_QUIRK_USB_INIT 0x2 /* needs vendor USB init string */ |
Alan Stern | 5ec71db | 2007-03-16 15:53:07 -0400 | [diff] [blame] | 212 | #define USBLP_QUIRK_BAD_CLASS 0x4 /* descriptor uses vendor-specific Class or SubClass */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Arjan van de Ven | 4c4c943 | 2005-11-29 09:43:42 +0100 | [diff] [blame] | 214 | static const struct quirk_printer_struct quirk_printers[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | { 0x03f0, 0x0004, USBLP_QUIRK_BIDIR }, /* HP DeskJet 895C */ |
| 216 | { 0x03f0, 0x0104, USBLP_QUIRK_BIDIR }, /* HP DeskJet 880C */ |
| 217 | { 0x03f0, 0x0204, USBLP_QUIRK_BIDIR }, /* HP DeskJet 815C */ |
| 218 | { 0x03f0, 0x0304, USBLP_QUIRK_BIDIR }, /* HP DeskJet 810C/812C */ |
| 219 | { 0x03f0, 0x0404, USBLP_QUIRK_BIDIR }, /* HP DeskJet 830C */ |
| 220 | { 0x03f0, 0x0504, USBLP_QUIRK_BIDIR }, /* HP DeskJet 885C */ |
| 221 | { 0x03f0, 0x0604, USBLP_QUIRK_BIDIR }, /* HP DeskJet 840C */ |
| 222 | { 0x03f0, 0x0804, USBLP_QUIRK_BIDIR }, /* HP DeskJet 816C */ |
| 223 | { 0x03f0, 0x1104, USBLP_QUIRK_BIDIR }, /* HP Deskjet 959C */ |
| 224 | { 0x0409, 0xefbe, USBLP_QUIRK_BIDIR }, /* NEC Picty900 (HP OEM) */ |
| 225 | { 0x0409, 0xbef4, USBLP_QUIRK_BIDIR }, /* NEC Picty760 (HP OEM) */ |
| 226 | { 0x0409, 0xf0be, USBLP_QUIRK_BIDIR }, /* NEC Picty920 (HP OEM) */ |
| 227 | { 0x0409, 0xf1be, USBLP_QUIRK_BIDIR }, /* NEC Picty800 (HP OEM) */ |
Martin Williges | 4f45d038 | 2006-12-28 20:52:10 +0100 | [diff] [blame] | 228 | { 0x0482, 0x0010, USBLP_QUIRK_BIDIR }, /* Kyocera Mita FS 820, by zut <kernel@zut.de> */ |
Alan Stern | 5ec71db | 2007-03-16 15:53:07 -0400 | [diff] [blame] | 229 | { 0x04b8, 0x0202, USBLP_QUIRK_BAD_CLASS }, /* Seiko Epson Receipt Printer M129C */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | { 0, 0 } |
| 231 | }; |
| 232 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 233 | static int usblp_wwait(struct usblp *usblp, int nonblock); |
| 234 | static int usblp_wtest(struct usblp *usblp, int nonblock); |
| 235 | static int usblp_rwait_and_lock(struct usblp *usblp, int nonblock); |
| 236 | static int usblp_rtest(struct usblp *usblp, int nonblock); |
| 237 | static int usblp_submit_read(struct usblp *usblp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | static int usblp_select_alts(struct usblp *usblp); |
| 239 | static int usblp_set_protocol(struct usblp *usblp, int protocol); |
| 240 | static int usblp_cache_device_id_string(struct usblp *usblp); |
| 241 | |
| 242 | /* forward reference to make our lives easier */ |
| 243 | static struct usb_driver usblp_driver; |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 244 | static DEFINE_MUTEX(usblp_mutex); /* locks the existence of usblp's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
| 246 | /* |
| 247 | * Functions for usblp control messages. |
| 248 | */ |
| 249 | |
| 250 | static int usblp_ctrl_msg(struct usblp *usblp, int request, int type, int dir, int recip, int value, void *buf, int len) |
| 251 | { |
| 252 | int retval; |
| 253 | int index = usblp->ifnum; |
| 254 | |
| 255 | /* High byte has the interface index. |
| 256 | Low byte has the alternate setting. |
| 257 | */ |
| 258 | if ((request == USBLP_REQ_GET_ID) && (type == USB_TYPE_CLASS)) { |
| 259 | index = (usblp->ifnum<<8)|usblp->protocol[usblp->current_protocol].alt_setting; |
| 260 | } |
| 261 | |
| 262 | retval = usb_control_msg(usblp->dev, |
| 263 | dir ? usb_rcvctrlpipe(usblp->dev, 0) : usb_sndctrlpipe(usblp->dev, 0), |
Pete Zaitcev | 283face | 2007-08-13 22:54:29 -0700 | [diff] [blame] | 264 | request, type | dir | recip, value, index, buf, len, USBLP_CTL_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | dbg("usblp_control_msg: rq: 0x%02x dir: %d recip: %d value: %d idx: %d len: %#x result: %d", |
| 266 | request, !!dir, recip, value, index, len, retval); |
| 267 | return retval < 0 ? retval : 0; |
| 268 | } |
| 269 | |
| 270 | #define usblp_read_status(usblp, status)\ |
| 271 | usblp_ctrl_msg(usblp, USBLP_REQ_GET_STATUS, USB_TYPE_CLASS, USB_DIR_IN, USB_RECIP_INTERFACE, 0, status, 1) |
| 272 | #define usblp_get_id(usblp, config, id, maxlen)\ |
| 273 | usblp_ctrl_msg(usblp, USBLP_REQ_GET_ID, USB_TYPE_CLASS, USB_DIR_IN, USB_RECIP_INTERFACE, config, id, maxlen) |
| 274 | #define usblp_reset(usblp)\ |
| 275 | usblp_ctrl_msg(usblp, USBLP_REQ_RESET, USB_TYPE_CLASS, USB_DIR_OUT, USB_RECIP_OTHER, 0, NULL, 0) |
| 276 | |
| 277 | #define usblp_hp_channel_change_request(usblp, channel, buffer) \ |
| 278 | usblp_ctrl_msg(usblp, USBLP_REQ_HP_CHANNEL_CHANGE_REQUEST, USB_TYPE_VENDOR, USB_DIR_IN, USB_RECIP_INTERFACE, channel, buffer, 1) |
| 279 | |
| 280 | /* |
| 281 | * See the description for usblp_select_alts() below for the usage |
| 282 | * explanation. Look into your /proc/bus/usb/devices and dmesg in |
| 283 | * case of any trouble. |
| 284 | */ |
| 285 | static int proto_bias = -1; |
| 286 | |
| 287 | /* |
| 288 | * URB callback. |
| 289 | */ |
| 290 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 291 | static void usblp_bulk_read(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | { |
| 293 | struct usblp *usblp = urb->context; |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 294 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 296 | if (usblp->present && usblp->used) { |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 297 | if (status) |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 298 | printk(KERN_WARNING "usblp%d: " |
| 299 | "nonzero read bulk status received: %d\n", |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 300 | usblp->minor, status); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 301 | } |
| 302 | spin_lock(&usblp->lock); |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 303 | if (status < 0) |
| 304 | usblp->rstatus = status; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 305 | else |
| 306 | usblp->rstatus = urb->actual_length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | usblp->rcomplete = 1; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 308 | wake_up(&usblp->rwait); |
| 309 | spin_unlock(&usblp->lock); |
| 310 | |
| 311 | usb_free_urb(urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 314 | static void usblp_bulk_write(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { |
| 316 | struct usblp *usblp = urb->context; |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 317 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 319 | if (usblp->present && usblp->used) { |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 320 | if (status) |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 321 | printk(KERN_WARNING "usblp%d: " |
| 322 | "nonzero write bulk status received: %d\n", |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 323 | usblp->minor, status); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 324 | } |
| 325 | spin_lock(&usblp->lock); |
Greg Kroah-Hartman | 18ac301 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 326 | if (status < 0) |
| 327 | usblp->wstatus = status; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 328 | else |
| 329 | usblp->wstatus = urb->actual_length; |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 330 | usblp->no_paper = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | usblp->wcomplete = 1; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 332 | wake_up(&usblp->wwait); |
| 333 | spin_unlock(&usblp->lock); |
| 334 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 335 | usb_free_urb(urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | /* |
| 339 | * Get and print printer errors. |
| 340 | */ |
| 341 | |
Arjan van de Ven | 4c4c943 | 2005-11-29 09:43:42 +0100 | [diff] [blame] | 342 | static const char *usblp_messages[] = { "ok", "out of paper", "off-line", "on fire" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | static int usblp_check_status(struct usblp *usblp, int err) |
| 345 | { |
| 346 | unsigned char status, newerr = 0; |
| 347 | int error; |
| 348 | |
Pete Zaitcev | fc401e6 | 2007-08-13 22:50:13 -0700 | [diff] [blame] | 349 | mutex_lock(&usblp->mut); |
| 350 | if ((error = usblp_read_status(usblp, usblp->statusbuf)) < 0) { |
| 351 | mutex_unlock(&usblp->mut); |
Randy Dunlap | 0bc8e00 | 2005-07-31 20:41:19 -0700 | [diff] [blame] | 352 | if (printk_ratelimit()) |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 353 | printk(KERN_ERR |
| 354 | "usblp%d: error %d reading printer status\n", |
Randy Dunlap | 0bc8e00 | 2005-07-31 20:41:19 -0700 | [diff] [blame] | 355 | usblp->minor, error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | return 0; |
| 357 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | status = *usblp->statusbuf; |
Pete Zaitcev | fc401e6 | 2007-08-13 22:50:13 -0700 | [diff] [blame] | 359 | mutex_unlock(&usblp->mut); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | if (~status & LP_PERRORP) |
| 362 | newerr = 3; |
| 363 | if (status & LP_POUTPA) |
| 364 | newerr = 1; |
| 365 | if (~status & LP_PSELECD) |
| 366 | newerr = 2; |
| 367 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 368 | if (newerr != err) { |
| 369 | printk(KERN_INFO "usblp%d: %s\n", |
| 370 | usblp->minor, usblp_messages[newerr]); |
| 371 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
| 373 | return newerr; |
| 374 | } |
| 375 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 376 | static int handle_bidir (struct usblp *usblp) |
| 377 | { |
| 378 | if (usblp->bidir && usblp->used && !usblp->sleeping) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 379 | if (usblp_submit_read(usblp) < 0) |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 380 | return -EIO; |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 381 | } |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 382 | return 0; |
| 383 | } |
| 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /* |
| 386 | * File op functions. |
| 387 | */ |
| 388 | |
| 389 | static int usblp_open(struct inode *inode, struct file *file) |
| 390 | { |
| 391 | int minor = iminor(inode); |
| 392 | struct usblp *usblp; |
| 393 | struct usb_interface *intf; |
| 394 | int retval; |
| 395 | |
| 396 | if (minor < 0) |
| 397 | return -ENODEV; |
| 398 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 399 | mutex_lock (&usblp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
| 401 | retval = -ENODEV; |
| 402 | intf = usb_find_interface(&usblp_driver, minor); |
| 403 | if (!intf) { |
| 404 | goto out; |
| 405 | } |
| 406 | usblp = usb_get_intfdata (intf); |
| 407 | if (!usblp || !usblp->dev || !usblp->present) |
| 408 | goto out; |
| 409 | |
| 410 | retval = -EBUSY; |
| 411 | if (usblp->used) |
| 412 | goto out; |
| 413 | |
| 414 | /* |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 415 | * We do not implement LP_ABORTOPEN/LPABORTOPEN for two reasons: |
| 416 | * - We do not want persistent state which close(2) does not clear |
| 417 | * - It is not used anyway, according to CUPS people |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | |
Oliver Neukum | d053218 | 2007-01-18 15:06:07 +0100 | [diff] [blame] | 420 | retval = usb_autopm_get_interface(intf); |
| 421 | if (retval < 0) |
| 422 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | usblp->used = 1; |
| 424 | file->private_data = usblp; |
| 425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | usblp->wcomplete = 1; /* we begin writeable */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 427 | usblp->wstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | usblp->rcomplete = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 430 | if (handle_bidir(usblp) < 0) { |
Oliver Neukum | 1902869 | 2008-02-12 19:08:30 +0100 | [diff] [blame] | 431 | usb_autopm_put_interface(intf); |
Pete Zaitcev | 97cb95d | 2007-05-24 21:59:19 -0700 | [diff] [blame] | 432 | usblp->used = 0; |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 433 | file->private_data = NULL; |
| 434 | retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | } |
| 436 | out: |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 437 | mutex_unlock (&usblp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | return retval; |
| 439 | } |
| 440 | |
| 441 | static void usblp_cleanup (struct usblp *usblp) |
| 442 | { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 443 | printk(KERN_INFO "usblp%d: removed\n", usblp->minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 445 | kfree(usblp->readbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | kfree (usblp->device_id_string); |
| 447 | kfree (usblp->statusbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | kfree (usblp); |
| 449 | } |
| 450 | |
| 451 | static void usblp_unlink_urbs(struct usblp *usblp) |
| 452 | { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 453 | usb_kill_anchored_urbs(&usblp->urbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | } |
| 455 | |
| 456 | static int usblp_release(struct inode *inode, struct file *file) |
| 457 | { |
| 458 | struct usblp *usblp = file->private_data; |
| 459 | |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 460 | usblp->flags &= ~LP_ABORT; |
| 461 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 462 | mutex_lock (&usblp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | usblp->used = 0; |
| 464 | if (usblp->present) { |
| 465 | usblp_unlink_urbs(usblp); |
Oliver Neukum | d053218 | 2007-01-18 15:06:07 +0100 | [diff] [blame] | 466 | usb_autopm_put_interface(usblp->intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | } else /* finish cleanup from disconnect */ |
| 468 | usblp_cleanup (usblp); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 469 | mutex_unlock (&usblp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | /* No kernel lock - fine */ |
| 474 | static unsigned int usblp_poll(struct file *file, struct poll_table_struct *wait) |
| 475 | { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 476 | int ret; |
| 477 | unsigned long flags; |
| 478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | struct usblp *usblp = file->private_data; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 480 | /* Should we check file->f_mode & FMODE_WRITE before poll_wait()? */ |
| 481 | poll_wait(file, &usblp->rwait, wait); |
| 482 | poll_wait(file, &usblp->wwait, wait); |
| 483 | spin_lock_irqsave(&usblp->lock, flags); |
Pete Zaitcev | 283face | 2007-08-13 22:54:29 -0700 | [diff] [blame] | 484 | ret = ((usblp->bidir && usblp->rcomplete) ? POLLIN | POLLRDNORM : 0) | |
| 485 | ((usblp->no_paper || usblp->wcomplete) ? POLLOUT | POLLWRNORM : 0); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 486 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 487 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | } |
| 489 | |
Pete Zaitcev | 318e479 | 2005-12-21 17:03:24 -0800 | [diff] [blame] | 490 | static long usblp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | { |
| 492 | struct usblp *usblp = file->private_data; |
| 493 | int length, err, i; |
| 494 | unsigned char newChannel; |
| 495 | int status; |
| 496 | int twoints[2]; |
| 497 | int retval = 0; |
| 498 | |
Oliver Neukum | 8e42266 | 2006-12-03 09:46:35 +0100 | [diff] [blame] | 499 | mutex_lock (&usblp->mut); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | if (!usblp->present) { |
| 501 | retval = -ENODEV; |
| 502 | goto done; |
| 503 | } |
| 504 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 505 | if (usblp->sleeping) { |
| 506 | retval = -ENODEV; |
| 507 | goto done; |
| 508 | } |
| 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | dbg("usblp_ioctl: cmd=0x%x (%c nr=%d len=%d dir=%d)", cmd, _IOC_TYPE(cmd), |
| 511 | _IOC_NR(cmd), _IOC_SIZE(cmd), _IOC_DIR(cmd) ); |
| 512 | |
| 513 | if (_IOC_TYPE(cmd) == 'P') /* new-style ioctl number */ |
| 514 | |
| 515 | switch (_IOC_NR(cmd)) { |
| 516 | |
| 517 | case IOCNR_GET_DEVICE_ID: /* get the DEVICE_ID string */ |
| 518 | if (_IOC_DIR(cmd) != _IOC_READ) { |
| 519 | retval = -EINVAL; |
| 520 | goto done; |
| 521 | } |
| 522 | |
| 523 | length = usblp_cache_device_id_string(usblp); |
| 524 | if (length < 0) { |
| 525 | retval = length; |
| 526 | goto done; |
| 527 | } |
| 528 | if (length > _IOC_SIZE(cmd)) |
| 529 | length = _IOC_SIZE(cmd); /* truncate */ |
| 530 | |
| 531 | if (copy_to_user((void __user *) arg, |
| 532 | usblp->device_id_string, |
| 533 | (unsigned long) length)) { |
| 534 | retval = -EFAULT; |
| 535 | goto done; |
| 536 | } |
| 537 | |
| 538 | break; |
| 539 | |
| 540 | case IOCNR_GET_PROTOCOLS: |
| 541 | if (_IOC_DIR(cmd) != _IOC_READ || |
| 542 | _IOC_SIZE(cmd) < sizeof(twoints)) { |
| 543 | retval = -EINVAL; |
| 544 | goto done; |
| 545 | } |
| 546 | |
| 547 | twoints[0] = usblp->current_protocol; |
| 548 | twoints[1] = 0; |
| 549 | for (i = USBLP_FIRST_PROTOCOL; |
| 550 | i <= USBLP_LAST_PROTOCOL; i++) { |
| 551 | if (usblp->protocol[i].alt_setting >= 0) |
| 552 | twoints[1] |= (1<<i); |
| 553 | } |
| 554 | |
| 555 | if (copy_to_user((void __user *)arg, |
| 556 | (unsigned char *)twoints, |
| 557 | sizeof(twoints))) { |
| 558 | retval = -EFAULT; |
| 559 | goto done; |
| 560 | } |
| 561 | |
| 562 | break; |
| 563 | |
| 564 | case IOCNR_SET_PROTOCOL: |
| 565 | if (_IOC_DIR(cmd) != _IOC_WRITE) { |
| 566 | retval = -EINVAL; |
| 567 | goto done; |
| 568 | } |
| 569 | |
| 570 | #ifdef DEBUG |
| 571 | if (arg == -10) { |
| 572 | usblp_dump(usblp); |
| 573 | break; |
| 574 | } |
| 575 | #endif |
| 576 | |
| 577 | usblp_unlink_urbs(usblp); |
| 578 | retval = usblp_set_protocol(usblp, arg); |
| 579 | if (retval < 0) { |
| 580 | usblp_set_protocol(usblp, |
| 581 | usblp->current_protocol); |
| 582 | } |
| 583 | break; |
| 584 | |
| 585 | case IOCNR_HP_SET_CHANNEL: |
| 586 | if (_IOC_DIR(cmd) != _IOC_WRITE || |
| 587 | le16_to_cpu(usblp->dev->descriptor.idVendor) != 0x03F0 || |
| 588 | usblp->quirks & USBLP_QUIRK_BIDIR) { |
| 589 | retval = -EINVAL; |
| 590 | goto done; |
| 591 | } |
| 592 | |
| 593 | err = usblp_hp_channel_change_request(usblp, |
| 594 | arg, &newChannel); |
| 595 | if (err < 0) { |
Greg Kroah-Hartman | 9908a32 | 2008-08-14 09:37:34 -0700 | [diff] [blame^] | 596 | dev_err(&usblp->dev->dev, |
| 597 | "usblp%d: error = %d setting " |
| 598 | "HP channel\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | usblp->minor, err); |
| 600 | retval = -EIO; |
| 601 | goto done; |
| 602 | } |
| 603 | |
| 604 | dbg("usblp%d requested/got HP channel %ld/%d", |
| 605 | usblp->minor, arg, newChannel); |
| 606 | break; |
| 607 | |
| 608 | case IOCNR_GET_BUS_ADDRESS: |
| 609 | if (_IOC_DIR(cmd) != _IOC_READ || |
| 610 | _IOC_SIZE(cmd) < sizeof(twoints)) { |
| 611 | retval = -EINVAL; |
| 612 | goto done; |
| 613 | } |
| 614 | |
| 615 | twoints[0] = usblp->dev->bus->busnum; |
| 616 | twoints[1] = usblp->dev->devnum; |
| 617 | if (copy_to_user((void __user *)arg, |
| 618 | (unsigned char *)twoints, |
| 619 | sizeof(twoints))) { |
| 620 | retval = -EFAULT; |
| 621 | goto done; |
| 622 | } |
| 623 | |
| 624 | dbg("usblp%d is bus=%d, device=%d", |
| 625 | usblp->minor, twoints[0], twoints[1]); |
| 626 | break; |
| 627 | |
| 628 | case IOCNR_GET_VID_PID: |
| 629 | if (_IOC_DIR(cmd) != _IOC_READ || |
| 630 | _IOC_SIZE(cmd) < sizeof(twoints)) { |
| 631 | retval = -EINVAL; |
| 632 | goto done; |
| 633 | } |
| 634 | |
| 635 | twoints[0] = le16_to_cpu(usblp->dev->descriptor.idVendor); |
| 636 | twoints[1] = le16_to_cpu(usblp->dev->descriptor.idProduct); |
| 637 | if (copy_to_user((void __user *)arg, |
| 638 | (unsigned char *)twoints, |
| 639 | sizeof(twoints))) { |
| 640 | retval = -EFAULT; |
| 641 | goto done; |
| 642 | } |
| 643 | |
| 644 | dbg("usblp%d is VID=0x%4.4X, PID=0x%4.4X", |
| 645 | usblp->minor, twoints[0], twoints[1]); |
| 646 | break; |
| 647 | |
| 648 | case IOCNR_SOFT_RESET: |
| 649 | if (_IOC_DIR(cmd) != _IOC_NONE) { |
| 650 | retval = -EINVAL; |
| 651 | goto done; |
| 652 | } |
| 653 | retval = usblp_reset(usblp); |
| 654 | break; |
| 655 | default: |
| 656 | retval = -ENOTTY; |
| 657 | } |
| 658 | else /* old-style ioctl value */ |
| 659 | switch (cmd) { |
| 660 | |
| 661 | case LPGETSTATUS: |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 662 | if ((retval = usblp_read_status(usblp, usblp->statusbuf))) { |
Randy Dunlap | 0bc8e00 | 2005-07-31 20:41:19 -0700 | [diff] [blame] | 663 | if (printk_ratelimit()) |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 664 | printk(KERN_ERR "usblp%d:" |
| 665 | "failed reading printer status (%d)\n", |
| 666 | usblp->minor, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | retval = -EIO; |
| 668 | goto done; |
| 669 | } |
| 670 | status = *usblp->statusbuf; |
| 671 | if (copy_to_user ((void __user *)arg, &status, sizeof(int))) |
| 672 | retval = -EFAULT; |
| 673 | break; |
| 674 | |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 675 | case LPABORT: |
| 676 | if (arg) |
| 677 | usblp->flags |= LP_ABORT; |
| 678 | else |
| 679 | usblp->flags &= ~LP_ABORT; |
| 680 | break; |
| 681 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | default: |
| 683 | retval = -ENOTTY; |
| 684 | } |
| 685 | |
| 686 | done: |
Oliver Neukum | 8e42266 | 2006-12-03 09:46:35 +0100 | [diff] [blame] | 687 | mutex_unlock (&usblp->mut); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | return retval; |
| 689 | } |
| 690 | |
Pete Zaitcev | 42cb967 | 2007-08-14 13:19:16 -0700 | [diff] [blame] | 691 | static struct urb *usblp_new_writeurb(struct usblp *usblp, int transfer_length) |
| 692 | { |
| 693 | struct urb *urb; |
| 694 | char *writebuf; |
| 695 | |
| 696 | if ((writebuf = kmalloc(transfer_length, GFP_KERNEL)) == NULL) |
| 697 | return NULL; |
| 698 | if ((urb = usb_alloc_urb(0, GFP_KERNEL)) == NULL) { |
| 699 | kfree(writebuf); |
| 700 | return NULL; |
| 701 | } |
| 702 | |
| 703 | usb_fill_bulk_urb(urb, usblp->dev, |
| 704 | usb_sndbulkpipe(usblp->dev, |
| 705 | usblp->protocol[usblp->current_protocol].epwrite->bEndpointAddress), |
| 706 | writebuf, transfer_length, usblp_bulk_write, usblp); |
| 707 | urb->transfer_flags |= URB_FREE_BUFFER; |
| 708 | |
| 709 | return urb; |
| 710 | } |
| 711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | static ssize_t usblp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) |
| 713 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | struct usblp *usblp = file->private_data; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 715 | struct urb *writeurb; |
| 716 | int rv; |
| 717 | int transfer_length; |
| 718 | ssize_t writecount = 0; |
| 719 | |
| 720 | if (mutex_lock_interruptible(&usblp->wmut)) { |
| 721 | rv = -EINTR; |
| 722 | goto raise_biglock; |
| 723 | } |
| 724 | if ((rv = usblp_wwait(usblp, !!(file->f_flags & O_NONBLOCK))) < 0) |
| 725 | goto raise_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
| 727 | while (writecount < count) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 728 | /* |
| 729 | * Step 1: Submit next block. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 731 | if ((transfer_length = count - writecount) > USBLP_BUF_SIZE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | transfer_length = USBLP_BUF_SIZE; |
| 733 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 734 | rv = -ENOMEM; |
Pete Zaitcev | 42cb967 | 2007-08-14 13:19:16 -0700 | [diff] [blame] | 735 | if ((writeurb = usblp_new_writeurb(usblp, transfer_length)) == NULL) |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 736 | goto raise_urb; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 737 | usb_anchor_urb(writeurb, &usblp->urbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | |
Pete Zaitcev | 42cb967 | 2007-08-14 13:19:16 -0700 | [diff] [blame] | 739 | if (copy_from_user(writeurb->transfer_buffer, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | buffer + writecount, transfer_length)) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 741 | rv = -EFAULT; |
| 742 | goto raise_badaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | } |
| 744 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 745 | spin_lock_irq(&usblp->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | usblp->wcomplete = 0; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 747 | spin_unlock_irq(&usblp->lock); |
| 748 | if ((rv = usb_submit_urb(writeurb, GFP_KERNEL)) < 0) { |
| 749 | usblp->wstatus = 0; |
| 750 | spin_lock_irq(&usblp->lock); |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 751 | usblp->no_paper = 0; |
Oliver Neukum | 6c8df79 | 2006-10-28 11:36:59 +0200 | [diff] [blame] | 752 | usblp->wcomplete = 1; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 753 | wake_up(&usblp->wwait); |
| 754 | spin_unlock_irq(&usblp->lock); |
| 755 | if (rv != -ENOMEM) |
| 756 | rv = -EIO; |
| 757 | goto raise_submit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | } |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 759 | |
| 760 | /* |
| 761 | * Step 2: Wait for transfer to end, collect results. |
| 762 | */ |
| 763 | rv = usblp_wwait(usblp, !!(file->f_flags&O_NONBLOCK)); |
| 764 | if (rv < 0) { |
Pete Zaitcev | 10e4852 | 2007-07-10 20:09:58 -0700 | [diff] [blame] | 765 | if (rv == -EAGAIN) { |
| 766 | /* Presume that it's going to complete well. */ |
| 767 | writecount += transfer_length; |
| 768 | } |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 769 | if (rv == -ENOSPC) { |
| 770 | spin_lock_irq(&usblp->lock); |
| 771 | usblp->no_paper = 1; /* Mark for poll(2) */ |
| 772 | spin_unlock_irq(&usblp->lock); |
| 773 | writecount += transfer_length; |
| 774 | } |
Pete Zaitcev | 10e4852 | 2007-07-10 20:09:58 -0700 | [diff] [blame] | 775 | /* Leave URB dangling, to be cleaned on close. */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 776 | goto collect_error; |
| 777 | } |
| 778 | |
| 779 | if (usblp->wstatus < 0) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 780 | rv = -EIO; |
| 781 | goto collect_error; |
| 782 | } |
| 783 | /* |
| 784 | * This is critical: it must be our URB, not other writer's. |
| 785 | * The wmut exists mainly to cover us here. |
| 786 | */ |
| 787 | writecount += usblp->wstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | } |
| 789 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 790 | mutex_unlock(&usblp->wmut); |
| 791 | return writecount; |
| 792 | |
| 793 | raise_submit: |
| 794 | raise_badaddr: |
| 795 | usb_unanchor_urb(writeurb); |
| 796 | usb_free_urb(writeurb); |
| 797 | raise_urb: |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 798 | raise_wait: |
| 799 | collect_error: /* Out of raise sequence */ |
| 800 | mutex_unlock(&usblp->wmut); |
| 801 | raise_biglock: |
| 802 | return writecount ? writecount : rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | } |
| 804 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 805 | /* |
| 806 | * Notice that we fail to restart in a few cases: on EFAULT, on restart |
| 807 | * error, etc. This is the historical behaviour. In all such cases we return |
| 808 | * EIO, and applications loop in order to get the new read going. |
| 809 | */ |
| 810 | static ssize_t usblp_read(struct file *file, char __user *buffer, size_t len, loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | { |
| 812 | struct usblp *usblp = file->private_data; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 813 | ssize_t count; |
| 814 | ssize_t avail; |
| 815 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
| 817 | if (!usblp->bidir) |
| 818 | return -EINVAL; |
| 819 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 820 | rv = usblp_rwait_and_lock(usblp, !!(file->f_flags & O_NONBLOCK)); |
| 821 | if (rv < 0) |
| 822 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 824 | if ((avail = usblp->rstatus) < 0) { |
| 825 | printk(KERN_ERR "usblp%d: error %d reading from printer\n", |
| 826 | usblp->minor, (int)avail); |
| 827 | usblp_submit_read(usblp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | count = -EIO; |
| 829 | goto done; |
| 830 | } |
| 831 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 832 | count = len < avail - usblp->readcount ? len : avail - usblp->readcount; |
| 833 | if (count != 0 && |
| 834 | copy_to_user(buffer, usblp->readbuf + usblp->readcount, count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | count = -EFAULT; |
| 836 | goto done; |
| 837 | } |
| 838 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 839 | if ((usblp->readcount += count) == avail) { |
| 840 | if (usblp_submit_read(usblp) < 0) { |
| 841 | /* We don't want to leak USB return codes into errno. */ |
| 842 | if (count == 0) |
| 843 | count = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | goto done; |
| 845 | } |
| 846 | } |
| 847 | |
| 848 | done: |
Oliver Neukum | 8e42266 | 2006-12-03 09:46:35 +0100 | [diff] [blame] | 849 | mutex_unlock (&usblp->mut); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | return count; |
| 851 | } |
| 852 | |
| 853 | /* |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 854 | * Wait for the write path to come idle. |
| 855 | * This is called under the ->wmut, so the idle path stays idle. |
| 856 | * |
| 857 | * Our write path has a peculiar property: it does not buffer like a tty, |
| 858 | * but waits for the write to succeed. This allows our ->release to bug out |
| 859 | * without waiting for writes to drain. But it obviously does not work |
| 860 | * when O_NONBLOCK is set. So, applications setting O_NONBLOCK must use |
| 861 | * select(2) or poll(2) to wait for the buffer to drain before closing. |
| 862 | * Alternatively, set blocking mode with fcntl and issue a zero-size write. |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 863 | */ |
| 864 | static int usblp_wwait(struct usblp *usblp, int nonblock) |
| 865 | { |
| 866 | DECLARE_WAITQUEUE(waita, current); |
| 867 | int rc; |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 868 | int err = 0; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 869 | |
| 870 | add_wait_queue(&usblp->wwait, &waita); |
| 871 | for (;;) { |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 872 | set_current_state(TASK_INTERRUPTIBLE); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 873 | if (mutex_lock_interruptible(&usblp->mut)) { |
| 874 | rc = -EINTR; |
| 875 | break; |
| 876 | } |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 877 | rc = usblp_wtest(usblp, nonblock); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 878 | mutex_unlock(&usblp->mut); |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 879 | if (rc <= 0) |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 880 | break; |
Pete Zaitcev | 7f47735 | 2007-07-23 01:58:15 -0700 | [diff] [blame] | 881 | |
| 882 | if (usblp->flags & LP_ABORT) { |
| 883 | if (schedule_timeout(msecs_to_jiffies(5000)) == 0) { |
| 884 | err = usblp_check_status(usblp, err); |
| 885 | if (err == 1) { /* Paper out */ |
| 886 | rc = -ENOSPC; |
| 887 | break; |
| 888 | } |
| 889 | } |
| 890 | } else { |
| 891 | schedule(); |
| 892 | } |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 893 | } |
| 894 | set_current_state(TASK_RUNNING); |
| 895 | remove_wait_queue(&usblp->wwait, &waita); |
| 896 | return rc; |
| 897 | } |
| 898 | |
| 899 | static int usblp_wtest(struct usblp *usblp, int nonblock) |
| 900 | { |
| 901 | unsigned long flags; |
| 902 | |
| 903 | if (!usblp->present) |
| 904 | return -ENODEV; |
| 905 | if (signal_pending(current)) |
| 906 | return -EINTR; |
| 907 | spin_lock_irqsave(&usblp->lock, flags); |
| 908 | if (usblp->wcomplete) { |
| 909 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 910 | return 0; |
| 911 | } |
| 912 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 913 | if (usblp->sleeping) |
| 914 | return -ENODEV; |
| 915 | if (nonblock) |
| 916 | return -EAGAIN; |
| 917 | return 1; |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * Wait for read bytes to become available. This probably should have been |
| 922 | * called usblp_r_lock_and_wait(), because we lock first. But it's a traditional |
| 923 | * name for functions which lock and return. |
| 924 | * |
| 925 | * We do not use wait_event_interruptible because it makes locking iffy. |
| 926 | */ |
| 927 | static int usblp_rwait_and_lock(struct usblp *usblp, int nonblock) |
| 928 | { |
| 929 | DECLARE_WAITQUEUE(waita, current); |
| 930 | int rc; |
| 931 | |
| 932 | add_wait_queue(&usblp->rwait, &waita); |
| 933 | for (;;) { |
| 934 | if (mutex_lock_interruptible(&usblp->mut)) { |
| 935 | rc = -EINTR; |
| 936 | break; |
| 937 | } |
| 938 | set_current_state(TASK_INTERRUPTIBLE); |
| 939 | if ((rc = usblp_rtest(usblp, nonblock)) < 0) { |
| 940 | mutex_unlock(&usblp->mut); |
| 941 | break; |
| 942 | } |
| 943 | if (rc == 0) /* Keep it locked */ |
| 944 | break; |
| 945 | mutex_unlock(&usblp->mut); |
| 946 | schedule(); |
| 947 | } |
| 948 | set_current_state(TASK_RUNNING); |
| 949 | remove_wait_queue(&usblp->rwait, &waita); |
| 950 | return rc; |
| 951 | } |
| 952 | |
| 953 | static int usblp_rtest(struct usblp *usblp, int nonblock) |
| 954 | { |
| 955 | unsigned long flags; |
| 956 | |
| 957 | if (!usblp->present) |
| 958 | return -ENODEV; |
| 959 | if (signal_pending(current)) |
| 960 | return -EINTR; |
| 961 | spin_lock_irqsave(&usblp->lock, flags); |
| 962 | if (usblp->rcomplete) { |
| 963 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 964 | return 0; |
| 965 | } |
| 966 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 967 | if (usblp->sleeping) |
| 968 | return -ENODEV; |
| 969 | if (nonblock) |
| 970 | return -EAGAIN; |
| 971 | return 1; |
| 972 | } |
| 973 | |
| 974 | /* |
| 975 | * Please check ->bidir and other such things outside for now. |
| 976 | */ |
| 977 | static int usblp_submit_read(struct usblp *usblp) |
| 978 | { |
| 979 | struct urb *urb; |
| 980 | unsigned long flags; |
| 981 | int rc; |
| 982 | |
| 983 | rc = -ENOMEM; |
| 984 | if ((urb = usb_alloc_urb(0, GFP_KERNEL)) == NULL) |
| 985 | goto raise_urb; |
| 986 | |
| 987 | usb_fill_bulk_urb(urb, usblp->dev, |
| 988 | usb_rcvbulkpipe(usblp->dev, |
| 989 | usblp->protocol[usblp->current_protocol].epread->bEndpointAddress), |
| 990 | usblp->readbuf, USBLP_BUF_SIZE_IN, |
| 991 | usblp_bulk_read, usblp); |
| 992 | usb_anchor_urb(urb, &usblp->urbs); |
| 993 | |
| 994 | spin_lock_irqsave(&usblp->lock, flags); |
| 995 | usblp->readcount = 0; /* XXX Why here? */ |
| 996 | usblp->rcomplete = 0; |
| 997 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 998 | if ((rc = usb_submit_urb(urb, GFP_KERNEL)) < 0) { |
| 999 | dbg("error submitting urb (%d)", rc); |
| 1000 | spin_lock_irqsave(&usblp->lock, flags); |
| 1001 | usblp->rstatus = rc; |
| 1002 | usblp->rcomplete = 1; |
| 1003 | spin_unlock_irqrestore(&usblp->lock, flags); |
| 1004 | goto raise_submit; |
| 1005 | } |
| 1006 | |
| 1007 | return 0; |
| 1008 | |
| 1009 | raise_submit: |
| 1010 | usb_unanchor_urb(urb); |
| 1011 | usb_free_urb(urb); |
| 1012 | raise_urb: |
| 1013 | return rc; |
| 1014 | } |
| 1015 | |
| 1016 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | * Checks for printers that have quirks, such as requiring unidirectional |
| 1018 | * communication but reporting bidirectional; currently some HP printers |
| 1019 | * have this flaw (HP 810, 880, 895, etc.), or needing an init string |
| 1020 | * sent at each open (like some Epsons). |
| 1021 | * Returns 1 if found, 0 if not found. |
| 1022 | * |
| 1023 | * HP recommended that we use the bidirectional interface but |
| 1024 | * don't attempt any bulk IN transfers from the IN endpoint. |
| 1025 | * Here's some more detail on the problem: |
| 1026 | * The problem is not that it isn't bidirectional though. The problem |
| 1027 | * is that if you request a device ID, or status information, while |
| 1028 | * the buffers are full, the return data will end up in the print data |
| 1029 | * buffer. For example if you make sure you never request the device ID |
| 1030 | * while you are sending print data, and you don't try to query the |
| 1031 | * printer status every couple of milliseconds, you will probably be OK. |
| 1032 | */ |
| 1033 | static unsigned int usblp_quirks (__u16 vendor, __u16 product) |
| 1034 | { |
| 1035 | int i; |
| 1036 | |
| 1037 | for (i = 0; quirk_printers[i].vendorId; i++) { |
| 1038 | if (vendor == quirk_printers[i].vendorId && |
| 1039 | product == quirk_printers[i].productId) |
| 1040 | return quirk_printers[i].quirks; |
| 1041 | } |
| 1042 | return 0; |
| 1043 | } |
| 1044 | |
Luiz Fernando N. Capitulino | 066202d | 2006-08-05 20:37:11 -0300 | [diff] [blame] | 1045 | static const struct file_operations usblp_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | .owner = THIS_MODULE, |
| 1047 | .read = usblp_read, |
| 1048 | .write = usblp_write, |
| 1049 | .poll = usblp_poll, |
Pete Zaitcev | 318e479 | 2005-12-21 17:03:24 -0800 | [diff] [blame] | 1050 | .unlocked_ioctl = usblp_ioctl, |
| 1051 | .compat_ioctl = usblp_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | .open = usblp_open, |
| 1053 | .release = usblp_release, |
| 1054 | }; |
| 1055 | |
| 1056 | static struct usb_class_driver usblp_class = { |
Greg Kroah-Hartman | d6e5bcf | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 1057 | .name = "lp%d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | .fops = &usblp_fops, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | .minor_base = USBLP_MINOR_BASE, |
| 1060 | }; |
| 1061 | |
David Woodhouse | a9714c8 | 2005-12-23 16:41:41 +0000 | [diff] [blame] | 1062 | static ssize_t usblp_show_ieee1284_id(struct device *dev, struct device_attribute *attr, char *buf) |
| 1063 | { |
| 1064 | struct usb_interface *intf = to_usb_interface(dev); |
| 1065 | struct usblp *usblp = usb_get_intfdata (intf); |
| 1066 | |
| 1067 | if (usblp->device_id_string[0] == 0 && |
| 1068 | usblp->device_id_string[1] == 0) |
| 1069 | return 0; |
| 1070 | |
| 1071 | return sprintf(buf, "%s", usblp->device_id_string+2); |
| 1072 | } |
| 1073 | |
| 1074 | static DEVICE_ATTR(ieee1284_id, S_IRUGO, usblp_show_ieee1284_id, NULL); |
| 1075 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | static int usblp_probe(struct usb_interface *intf, |
| 1077 | const struct usb_device_id *id) |
| 1078 | { |
| 1079 | struct usb_device *dev = interface_to_usbdev (intf); |
Julia Lawall | 49b707b | 2008-07-16 18:00:42 +0200 | [diff] [blame] | 1080 | struct usblp *usblp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | int protocol; |
| 1082 | int retval; |
| 1083 | |
| 1084 | /* Malloc and start initializing usblp structure so we can use it |
| 1085 | * directly. */ |
Julia Lawall | 49b707b | 2008-07-16 18:00:42 +0200 | [diff] [blame] | 1086 | usblp = kzalloc(sizeof(struct usblp), GFP_KERNEL); |
| 1087 | if (!usblp) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1088 | retval = -ENOMEM; |
Julia Lawall | 49b707b | 2008-07-16 18:00:42 +0200 | [diff] [blame] | 1089 | goto abort_ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | usblp->dev = dev; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1092 | mutex_init(&usblp->wmut); |
Oliver Neukum | 8e42266 | 2006-12-03 09:46:35 +0100 | [diff] [blame] | 1093 | mutex_init (&usblp->mut); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1094 | spin_lock_init(&usblp->lock); |
| 1095 | init_waitqueue_head(&usblp->rwait); |
| 1096 | init_waitqueue_head(&usblp->wwait); |
| 1097 | init_usb_anchor(&usblp->urbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | usblp->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
| 1099 | usblp->intf = intf; |
| 1100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | /* Malloc device ID string buffer to the largest expected length, |
| 1102 | * since we can re-query it on an ioctl and a dynamic string |
| 1103 | * could change in length. */ |
| 1104 | if (!(usblp->device_id_string = kmalloc(USBLP_DEVICE_ID_SIZE, GFP_KERNEL))) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1105 | retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | goto abort; |
| 1107 | } |
| 1108 | |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1109 | /* |
| 1110 | * Allocate read buffer. We somewhat wastefully |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | * malloc both regardless of bidirectionality, because the |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1112 | * alternate setting can be changed later via an ioctl. |
| 1113 | */ |
| 1114 | if (!(usblp->readbuf = kmalloc(USBLP_BUF_SIZE_IN, GFP_KERNEL))) { |
| 1115 | retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | goto abort; |
| 1117 | } |
| 1118 | |
| 1119 | /* Allocate buffer for printer status */ |
| 1120 | usblp->statusbuf = kmalloc(STATUS_BUF_SIZE, GFP_KERNEL); |
| 1121 | if (!usblp->statusbuf) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1122 | retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | goto abort; |
| 1124 | } |
| 1125 | |
| 1126 | /* Lookup quirks for this printer. */ |
| 1127 | usblp->quirks = usblp_quirks( |
| 1128 | le16_to_cpu(dev->descriptor.idVendor), |
| 1129 | le16_to_cpu(dev->descriptor.idProduct)); |
| 1130 | |
| 1131 | /* Analyze and pick initial alternate settings and endpoints. */ |
| 1132 | protocol = usblp_select_alts(usblp); |
| 1133 | if (protocol < 0) { |
| 1134 | dbg("incompatible printer-class device 0x%4.4X/0x%4.4X", |
| 1135 | le16_to_cpu(dev->descriptor.idVendor), |
| 1136 | le16_to_cpu(dev->descriptor.idProduct)); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1137 | retval = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | goto abort; |
| 1139 | } |
| 1140 | |
| 1141 | /* Setup the selected alternate setting and endpoints. */ |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1142 | if (usblp_set_protocol(usblp, protocol) < 0) { |
| 1143 | retval = -ENODEV; /* ->probe isn't ->ioctl */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | goto abort; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1145 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | |
| 1147 | /* Retrieve and store the device ID string. */ |
| 1148 | usblp_cache_device_id_string(usblp); |
Greg Kroah-Hartman | 96cede5 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 1149 | retval = device_create_file(&intf->dev, &dev_attr_ieee1284_id); |
| 1150 | if (retval) |
| 1151 | goto abort_intfdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | |
| 1153 | #ifdef DEBUG |
| 1154 | usblp_check_status(usblp, 0); |
| 1155 | #endif |
| 1156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | usb_set_intfdata (intf, usblp); |
| 1158 | |
| 1159 | usblp->present = 1; |
| 1160 | |
| 1161 | retval = usb_register_dev(intf, &usblp_class); |
| 1162 | if (retval) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1163 | printk(KERN_ERR "usblp: Not able to get a minor" |
| 1164 | " (base %u, slice default): %d\n", |
| 1165 | USBLP_MINOR_BASE, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | goto abort_intfdata; |
| 1167 | } |
| 1168 | usblp->minor = intf->minor; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1169 | printk(KERN_INFO "usblp%d: USB %sdirectional printer dev %d " |
| 1170 | "if %d alt %d proto %d vid 0x%4.4X pid 0x%4.4X\n", |
David Woodhouse | a9714c8 | 2005-12-23 16:41:41 +0000 | [diff] [blame] | 1171 | usblp->minor, usblp->bidir ? "Bi" : "Uni", dev->devnum, |
| 1172 | usblp->ifnum, |
| 1173 | usblp->protocol[usblp->current_protocol].alt_setting, |
| 1174 | usblp->current_protocol, |
| 1175 | le16_to_cpu(usblp->dev->descriptor.idVendor), |
| 1176 | le16_to_cpu(usblp->dev->descriptor.idProduct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | |
| 1178 | return 0; |
| 1179 | |
| 1180 | abort_intfdata: |
| 1181 | usb_set_intfdata (intf, NULL); |
David Woodhouse | a9714c8 | 2005-12-23 16:41:41 +0000 | [diff] [blame] | 1182 | device_remove_file(&intf->dev, &dev_attr_ieee1284_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | abort: |
Julia Lawall | 49b707b | 2008-07-16 18:00:42 +0200 | [diff] [blame] | 1184 | kfree(usblp->readbuf); |
| 1185 | kfree(usblp->statusbuf); |
| 1186 | kfree(usblp->device_id_string); |
| 1187 | kfree(usblp); |
| 1188 | abort_ret: |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1189 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | /* |
| 1193 | * We are a "new" style driver with usb_device_id table, |
| 1194 | * but our requirements are too intricate for simple match to handle. |
| 1195 | * |
| 1196 | * The "proto_bias" option may be used to specify the preferred protocol |
| 1197 | * for all USB printers (1=7/1/1, 2=7/1/2, 3=7/1/3). If the device |
| 1198 | * supports the preferred protocol, then we bind to it. |
| 1199 | * |
| 1200 | * The best interface for us is 7/1/2, because it is compatible |
| 1201 | * with a stream of characters. If we find it, we bind to it. |
| 1202 | * |
| 1203 | * Note that the people from hpoj.sourceforge.net need to be able to |
| 1204 | * bind to 7/1/3 (MLC/1284.4), so we provide them ioctls for this purpose. |
| 1205 | * |
| 1206 | * Failing 7/1/2, we look for 7/1/3, even though it's probably not |
| 1207 | * stream-compatible, because this matches the behaviour of the old code. |
| 1208 | * |
| 1209 | * If nothing else, we bind to 7/1/1 - the unidirectional interface. |
| 1210 | */ |
| 1211 | static int usblp_select_alts(struct usblp *usblp) |
| 1212 | { |
| 1213 | struct usb_interface *if_alt; |
| 1214 | struct usb_host_interface *ifd; |
| 1215 | struct usb_endpoint_descriptor *epd, *epwrite, *epread; |
| 1216 | int p, i, e; |
| 1217 | |
| 1218 | if_alt = usblp->intf; |
| 1219 | |
| 1220 | for (p = 0; p < USBLP_MAX_PROTOCOLS; p++) |
| 1221 | usblp->protocol[p].alt_setting = -1; |
| 1222 | |
| 1223 | /* Find out what we have. */ |
| 1224 | for (i = 0; i < if_alt->num_altsetting; i++) { |
| 1225 | ifd = &if_alt->altsetting[i]; |
| 1226 | |
| 1227 | if (ifd->desc.bInterfaceClass != 7 || ifd->desc.bInterfaceSubClass != 1) |
Alan Stern | 5ec71db | 2007-03-16 15:53:07 -0400 | [diff] [blame] | 1228 | if (!(usblp->quirks & USBLP_QUIRK_BAD_CLASS)) |
| 1229 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | |
| 1231 | if (ifd->desc.bInterfaceProtocol < USBLP_FIRST_PROTOCOL || |
| 1232 | ifd->desc.bInterfaceProtocol > USBLP_LAST_PROTOCOL) |
| 1233 | continue; |
| 1234 | |
| 1235 | /* Look for bulk OUT and IN endpoints. */ |
| 1236 | epwrite = epread = NULL; |
| 1237 | for (e = 0; e < ifd->desc.bNumEndpoints; e++) { |
| 1238 | epd = &ifd->endpoint[e].desc; |
| 1239 | |
Luiz Fernando N. Capitulino | 5bc66d5 | 2006-09-27 11:58:53 -0700 | [diff] [blame] | 1240 | if (usb_endpoint_is_bulk_out(epd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | if (!epwrite) |
| 1242 | epwrite = epd; |
| 1243 | |
Luiz Fernando N. Capitulino | 5bc66d5 | 2006-09-27 11:58:53 -0700 | [diff] [blame] | 1244 | if (usb_endpoint_is_bulk_in(epd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | if (!epread) |
| 1246 | epread = epd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | } |
| 1248 | |
| 1249 | /* Ignore buggy hardware without the right endpoints. */ |
| 1250 | if (!epwrite || (ifd->desc.bInterfaceProtocol > 1 && !epread)) |
| 1251 | continue; |
| 1252 | |
| 1253 | /* Turn off reads for 7/1/1 (unidirectional) interfaces |
| 1254 | * and buggy bidirectional printers. */ |
| 1255 | if (ifd->desc.bInterfaceProtocol == 1) { |
| 1256 | epread = NULL; |
| 1257 | } else if (usblp->quirks & USBLP_QUIRK_BIDIR) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1258 | printk(KERN_INFO "usblp%d: Disabling reads from " |
| 1259 | "problematic bidirectional printer\n", |
| 1260 | usblp->minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | epread = NULL; |
| 1262 | } |
| 1263 | |
| 1264 | usblp->protocol[ifd->desc.bInterfaceProtocol].alt_setting = |
| 1265 | ifd->desc.bAlternateSetting; |
| 1266 | usblp->protocol[ifd->desc.bInterfaceProtocol].epwrite = epwrite; |
| 1267 | usblp->protocol[ifd->desc.bInterfaceProtocol].epread = epread; |
| 1268 | } |
| 1269 | |
| 1270 | /* If our requested protocol is supported, then use it. */ |
| 1271 | if (proto_bias >= USBLP_FIRST_PROTOCOL && |
| 1272 | proto_bias <= USBLP_LAST_PROTOCOL && |
| 1273 | usblp->protocol[proto_bias].alt_setting != -1) |
| 1274 | return proto_bias; |
| 1275 | |
| 1276 | /* Ordering is important here. */ |
| 1277 | if (usblp->protocol[2].alt_setting != -1) |
| 1278 | return 2; |
| 1279 | if (usblp->protocol[1].alt_setting != -1) |
| 1280 | return 1; |
| 1281 | if (usblp->protocol[3].alt_setting != -1) |
| 1282 | return 3; |
| 1283 | |
| 1284 | /* If nothing is available, then don't bind to this device. */ |
| 1285 | return -1; |
| 1286 | } |
| 1287 | |
| 1288 | static int usblp_set_protocol(struct usblp *usblp, int protocol) |
| 1289 | { |
| 1290 | int r, alts; |
| 1291 | |
| 1292 | if (protocol < USBLP_FIRST_PROTOCOL || protocol > USBLP_LAST_PROTOCOL) |
| 1293 | return -EINVAL; |
| 1294 | |
| 1295 | alts = usblp->protocol[protocol].alt_setting; |
| 1296 | if (alts < 0) |
| 1297 | return -EINVAL; |
| 1298 | r = usb_set_interface(usblp->dev, usblp->ifnum, alts); |
| 1299 | if (r < 0) { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1300 | printk(KERN_ERR "usblp: can't set desired altsetting %d on interface %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | alts, usblp->ifnum); |
| 1302 | return r; |
| 1303 | } |
| 1304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | usblp->bidir = (usblp->protocol[protocol].epread != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | usblp->current_protocol = protocol; |
| 1307 | dbg("usblp%d set protocol %d", usblp->minor, protocol); |
| 1308 | return 0; |
| 1309 | } |
| 1310 | |
| 1311 | /* Retrieves and caches device ID string. |
| 1312 | * Returns length, including length bytes but not null terminator. |
| 1313 | * On error, returns a negative errno value. */ |
| 1314 | static int usblp_cache_device_id_string(struct usblp *usblp) |
| 1315 | { |
| 1316 | int err, length; |
| 1317 | |
| 1318 | err = usblp_get_id(usblp, 0, usblp->device_id_string, USBLP_DEVICE_ID_SIZE - 1); |
| 1319 | if (err < 0) { |
| 1320 | dbg("usblp%d: error = %d reading IEEE-1284 Device ID string", |
| 1321 | usblp->minor, err); |
| 1322 | usblp->device_id_string[0] = usblp->device_id_string[1] = '\0'; |
| 1323 | return -EIO; |
| 1324 | } |
| 1325 | |
| 1326 | /* First two bytes are length in big-endian. |
| 1327 | * They count themselves, and we copy them into |
| 1328 | * the user's buffer. */ |
| 1329 | length = be16_to_cpu(*((__be16 *)usblp->device_id_string)); |
| 1330 | if (length < 2) |
| 1331 | length = 2; |
| 1332 | else if (length >= USBLP_DEVICE_ID_SIZE) |
| 1333 | length = USBLP_DEVICE_ID_SIZE - 1; |
| 1334 | usblp->device_id_string[length] = '\0'; |
| 1335 | |
| 1336 | dbg("usblp%d Device ID string [len=%d]=\"%s\"", |
| 1337 | usblp->minor, length, &usblp->device_id_string[2]); |
| 1338 | |
| 1339 | return length; |
| 1340 | } |
| 1341 | |
| 1342 | static void usblp_disconnect(struct usb_interface *intf) |
| 1343 | { |
| 1344 | struct usblp *usblp = usb_get_intfdata (intf); |
| 1345 | |
| 1346 | usb_deregister_dev(intf, &usblp_class); |
| 1347 | |
| 1348 | if (!usblp || !usblp->dev) { |
Greg Kroah-Hartman | 9908a32 | 2008-08-14 09:37:34 -0700 | [diff] [blame^] | 1349 | dev_err(&intf->dev, "bogus disconnect\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | BUG (); |
| 1351 | } |
| 1352 | |
David Woodhouse | a9714c8 | 2005-12-23 16:41:41 +0000 | [diff] [blame] | 1353 | device_remove_file(&intf->dev, &dev_attr_ieee1284_id); |
| 1354 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1355 | mutex_lock (&usblp_mutex); |
Oliver Neukum | 8e42266 | 2006-12-03 09:46:35 +0100 | [diff] [blame] | 1356 | mutex_lock (&usblp->mut); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | usblp->present = 0; |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1358 | wake_up(&usblp->wwait); |
| 1359 | wake_up(&usblp->rwait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | usb_set_intfdata (intf, NULL); |
| 1361 | |
| 1362 | usblp_unlink_urbs(usblp); |
Oliver Neukum | 8e42266 | 2006-12-03 09:46:35 +0100 | [diff] [blame] | 1363 | mutex_unlock (&usblp->mut); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | |
| 1365 | if (!usblp->used) |
| 1366 | usblp_cleanup (usblp); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1367 | mutex_unlock (&usblp_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | } |
| 1369 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1370 | static int usblp_suspend (struct usb_interface *intf, pm_message_t message) |
| 1371 | { |
| 1372 | struct usblp *usblp = usb_get_intfdata (intf); |
| 1373 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1374 | /* we take no more IO */ |
| 1375 | usblp->sleeping = 1; |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1376 | usblp_unlink_urbs(usblp); |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1377 | #if 0 /* XXX Do we want this? What if someone is reading, should we fail? */ |
| 1378 | /* not strictly necessary, but just in case */ |
| 1379 | wake_up(&usblp->wwait); |
| 1380 | wake_up(&usblp->rwait); |
| 1381 | #endif |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1382 | |
| 1383 | return 0; |
| 1384 | } |
| 1385 | |
| 1386 | static int usblp_resume (struct usb_interface *intf) |
| 1387 | { |
| 1388 | struct usblp *usblp = usb_get_intfdata (intf); |
| 1389 | int r; |
| 1390 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1391 | usblp->sleeping = 0; |
| 1392 | r = handle_bidir (usblp); |
| 1393 | |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1394 | return r; |
| 1395 | } |
| 1396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | static struct usb_device_id usblp_ids [] = { |
| 1398 | { USB_DEVICE_INFO(7, 1, 1) }, |
| 1399 | { USB_DEVICE_INFO(7, 1, 2) }, |
| 1400 | { USB_DEVICE_INFO(7, 1, 3) }, |
| 1401 | { USB_INTERFACE_INFO(7, 1, 1) }, |
| 1402 | { USB_INTERFACE_INFO(7, 1, 2) }, |
| 1403 | { USB_INTERFACE_INFO(7, 1, 3) }, |
Alan Stern | 5ec71db | 2007-03-16 15:53:07 -0400 | [diff] [blame] | 1404 | { USB_DEVICE(0x04b8, 0x0202) }, /* Seiko Epson Receipt Printer M129C */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | { } /* Terminating entry */ |
| 1406 | }; |
| 1407 | |
| 1408 | MODULE_DEVICE_TABLE (usb, usblp_ids); |
| 1409 | |
| 1410 | static struct usb_driver usblp_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | .name = "usblp", |
| 1412 | .probe = usblp_probe, |
| 1413 | .disconnect = usblp_disconnect, |
Oliver Neukum | 516077c | 2006-10-05 09:04:11 +0200 | [diff] [blame] | 1414 | .suspend = usblp_suspend, |
| 1415 | .resume = usblp_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | .id_table = usblp_ids, |
Oliver Neukum | d053218 | 2007-01-18 15:06:07 +0100 | [diff] [blame] | 1417 | .supports_autosuspend = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | }; |
| 1419 | |
| 1420 | static int __init usblp_init(void) |
| 1421 | { |
Pete Zaitcev | 317c67b | 2007-06-21 12:44:56 -0700 | [diff] [blame] | 1422 | return usb_register(&usblp_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
| 1424 | |
| 1425 | static void __exit usblp_exit(void) |
| 1426 | { |
| 1427 | usb_deregister(&usblp_driver); |
| 1428 | } |
| 1429 | |
| 1430 | module_init(usblp_init); |
| 1431 | module_exit(usblp_exit); |
| 1432 | |
| 1433 | MODULE_AUTHOR( DRIVER_AUTHOR ); |
| 1434 | MODULE_DESCRIPTION( DRIVER_DESC ); |
| 1435 | module_param(proto_bias, int, S_IRUGO | S_IWUSR); |
| 1436 | MODULE_PARM_DESC(proto_bias, "Favourite protocol number"); |
| 1437 | MODULE_LICENSE("GPL"); |