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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
317c67b8 | 2 | * usblp.c |
1da177e4 LT |
3 | * |
4 | * Copyright (c) 1999 Michael Gee <michael@linuxspecific.com> | |
a2531293 | 5 | * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz> |
f4b09ebc | 6 | * Copyright (c) 2000 Randy Dunlap <rdunlap@xenotime.net> |
1da177e4 LT |
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> | |
8e695cdb | 10 | * Copyright (c) 2006 Oliver Neukum <oliver@neukum.name> |
1da177e4 LT |
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); | |
997ea58e | 30 | * use usb_alloc_coherent() for read buf & write buf; |
283face8 | 31 | * none - Maintained in Linux kernel after v0.13 |
1da177e4 LT |
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> | |
1da177e4 LT |
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> | |
4186ecf8 | 58 | #include <linux/mutex.h> |
1da177e4 LT |
59 | #undef DEBUG |
60 | #include <linux/usb.h> | |
305e7be5 | 61 | #include <linux/ratelimit.h> |
1da177e4 LT |
62 | |
63 | /* | |
64 | * Version Information | |
65 | */ | |
1da177e4 LT |
66 | #define DRIVER_AUTHOR "Michael Gee, Pavel Machek, Vojtech Pavlik, Randy Dunlap, Pete Zaitcev, David Paschal" |
67 | #define DRIVER_DESC "USB Printer Device Class driver" | |
68 | ||
69 | #define USBLP_BUF_SIZE 8192 | |
317c67b8 | 70 | #define USBLP_BUF_SIZE_IN 1024 |
1da177e4 LT |
71 | #define USBLP_DEVICE_ID_SIZE 1024 |
72 | ||
73 | /* ioctls: */ | |
1da177e4 LT |
74 | #define IOCNR_GET_DEVICE_ID 1 |
75 | #define IOCNR_GET_PROTOCOLS 2 | |
76 | #define IOCNR_SET_PROTOCOL 3 | |
77 | #define IOCNR_HP_SET_CHANNEL 4 | |
78 | #define IOCNR_GET_BUS_ADDRESS 5 | |
79 | #define IOCNR_GET_VID_PID 6 | |
80 | #define IOCNR_SOFT_RESET 7 | |
81 | /* Get device_id string: */ | |
82 | #define LPIOC_GET_DEVICE_ID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, len) | |
83 | /* The following ioctls were added for http://hpoj.sourceforge.net: */ | |
84 | /* Get two-int array: | |
85 | * [0]=current protocol (1=7/1/1, 2=7/1/2, 3=7/1/3), | |
86 | * [1]=supported protocol mask (mask&(1<<n)!=0 means 7/1/n supported): */ | |
87 | #define LPIOC_GET_PROTOCOLS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_PROTOCOLS, len) | |
88 | /* Set protocol (arg: 1=7/1/1, 2=7/1/2, 3=7/1/3): */ | |
89 | #define LPIOC_SET_PROTOCOL _IOC(_IOC_WRITE, 'P', IOCNR_SET_PROTOCOL, 0) | |
90 | /* Set channel number (HP Vendor-specific command): */ | |
91 | #define LPIOC_HP_SET_CHANNEL _IOC(_IOC_WRITE, 'P', IOCNR_HP_SET_CHANNEL, 0) | |
92 | /* Get two-int array: [0]=bus number, [1]=device address: */ | |
93 | #define LPIOC_GET_BUS_ADDRESS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_BUS_ADDRESS, len) | |
94 | /* Get two-int array: [0]=vendor ID, [1]=product ID: */ | |
95 | #define LPIOC_GET_VID_PID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_VID_PID, len) | |
96 | /* Perform class specific soft reset */ | |
97 | #define LPIOC_SOFT_RESET _IOC(_IOC_NONE, 'P', IOCNR_SOFT_RESET, 0); | |
98 | ||
99 | /* | |
100 | * A DEVICE_ID string may include the printer's serial number. | |
101 | * It should end with a semi-colon (';'). | |
102 | * An example from an HP 970C DeskJet printer is (this is one long string, | |
103 | * with the serial number changed): | |
104 | 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: ; | |
105 | */ | |
106 | ||
107 | /* | |
108 | * USB Printer Requests | |
109 | */ | |
110 | ||
111 | #define USBLP_REQ_GET_ID 0x00 | |
112 | #define USBLP_REQ_GET_STATUS 0x01 | |
113 | #define USBLP_REQ_RESET 0x02 | |
114 | #define USBLP_REQ_HP_CHANNEL_CHANGE_REQUEST 0x00 /* HP Vendor-specific */ | |
115 | ||
116 | #define USBLP_MINORS 16 | |
117 | #define USBLP_MINOR_BASE 0 | |
118 | ||
283face8 | 119 | #define USBLP_CTL_TIMEOUT 5000 /* 5 seconds */ |
1da177e4 LT |
120 | |
121 | #define USBLP_FIRST_PROTOCOL 1 | |
122 | #define USBLP_LAST_PROTOCOL 3 | |
123 | #define USBLP_MAX_PROTOCOLS (USBLP_LAST_PROTOCOL+1) | |
124 | ||
125 | /* | |
126 | * some arbitrary status buffer size; | |
127 | * need a status buffer that is allocated via kmalloc(), not on stack | |
128 | */ | |
129 | #define STATUS_BUF_SIZE 8 | |
130 | ||
317c67b8 PZ |
131 | /* |
132 | * Locks down the locking order: | |
133 | * ->wmut locks wstatus. | |
134 | * ->mut locks the whole usblp, except [rw]complete, and thus, by indirection, | |
135 | * [rw]status. We only touch status when we know the side idle. | |
136 | * ->lock locks what interrupt accesses. | |
137 | */ | |
1da177e4 | 138 | struct usblp { |
916de027 | 139 | struct usb_device *dev; /* USB device */ |
317c67b8 PZ |
140 | struct mutex wmut; |
141 | struct mutex mut; | |
142 | spinlock_t lock; /* locks rcomplete, wcomplete */ | |
1da177e4 LT |
143 | char *readbuf; /* read transfer_buffer */ |
144 | char *statusbuf; /* status transfer_buffer */ | |
317c67b8 PZ |
145 | struct usb_anchor urbs; |
146 | wait_queue_head_t rwait, wwait; | |
1da177e4 LT |
147 | int readcount; /* Counter for reads */ |
148 | int ifnum; /* Interface number */ | |
149 | struct usb_interface *intf; /* The interface */ | |
150 | /* Alternate-setting numbers and endpoints for each protocol | |
151 | * (7/1/{index=1,2,3}) that the device supports: */ | |
152 | struct { | |
153 | int alt_setting; | |
154 | struct usb_endpoint_descriptor *epwrite; | |
155 | struct usb_endpoint_descriptor *epread; | |
156 | } protocol[USBLP_MAX_PROTOCOLS]; | |
157 | int current_protocol; | |
158 | int minor; /* minor number of device */ | |
317c67b8 PZ |
159 | int wcomplete, rcomplete; |
160 | int wstatus; /* bytes written or error */ | |
161 | int rstatus; /* bytes ready or error */ | |
1da177e4 | 162 | unsigned int quirks; /* quirks flags */ |
7f477358 | 163 | unsigned int flags; /* mode flags */ |
1da177e4 LT |
164 | unsigned char used; /* True if open */ |
165 | unsigned char present; /* True if not disconnected */ | |
166 | unsigned char bidir; /* interface is bidirectional */ | |
7f477358 | 167 | unsigned char no_paper; /* Paper Out happened */ |
1da177e4 LT |
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 | |
916de027 NK |
173 | static void usblp_dump(struct usblp *usblp) |
174 | { | |
4f306309 | 175 | struct device *dev = &usblp->intf->dev; |
1da177e4 LT |
176 | int p; |
177 | ||
4f306309 GKH |
178 | dev_dbg(dev, "usblp=0x%p\n", usblp); |
179 | dev_dbg(dev, "dev=0x%p\n", usblp->dev); | |
180 | dev_dbg(dev, "present=%d\n", usblp->present); | |
181 | dev_dbg(dev, "readbuf=0x%p\n", usblp->readbuf); | |
182 | dev_dbg(dev, "readcount=%d\n", usblp->readcount); | |
183 | dev_dbg(dev, "ifnum=%d\n", usblp->ifnum); | |
184 | for (p = USBLP_FIRST_PROTOCOL; p <= USBLP_LAST_PROTOCOL; p++) { | |
185 | dev_dbg(dev, "protocol[%d].alt_setting=%d\n", p, | |
186 | usblp->protocol[p].alt_setting); | |
187 | dev_dbg(dev, "protocol[%d].epwrite=%p\n", p, | |
188 | usblp->protocol[p].epwrite); | |
189 | dev_dbg(dev, "protocol[%d].epread=%p\n", p, | |
190 | usblp->protocol[p].epread); | |
191 | } | |
192 | dev_dbg(dev, "current_protocol=%d\n", usblp->current_protocol); | |
193 | dev_dbg(dev, "minor=%d\n", usblp->minor); | |
194 | dev_dbg(dev, "wstatus=%d\n", usblp->wstatus); | |
195 | dev_dbg(dev, "rstatus=%d\n", usblp->rstatus); | |
196 | dev_dbg(dev, "quirks=%d\n", usblp->quirks); | |
197 | dev_dbg(dev, "used=%d\n", usblp->used); | |
198 | dev_dbg(dev, "bidir=%d\n", usblp->bidir); | |
199 | dev_dbg(dev, "device_id_string=\"%s\"\n", | |
1da177e4 LT |
200 | usblp->device_id_string ? |
201 | usblp->device_id_string + 2 : | |
202 | (unsigned char *)"(null)"); | |
203 | } | |
204 | #endif | |
205 | ||
206 | /* Quirks: various printer quirks are handled by this table & its flags. */ | |
207 | ||
208 | struct quirk_printer_struct { | |
209 | __u16 vendorId; | |
210 | __u16 productId; | |
211 | unsigned int quirks; | |
212 | }; | |
213 | ||
214 | #define USBLP_QUIRK_BIDIR 0x1 /* reports bidir but requires unidirectional mode (no INs/reads) */ | |
215 | #define USBLP_QUIRK_USB_INIT 0x2 /* needs vendor USB init string */ | |
5ec71db5 | 216 | #define USBLP_QUIRK_BAD_CLASS 0x4 /* descriptor uses vendor-specific Class or SubClass */ |
1da177e4 | 217 | |
4c4c9432 | 218 | static const struct quirk_printer_struct quirk_printers[] = { |
1da177e4 LT |
219 | { 0x03f0, 0x0004, USBLP_QUIRK_BIDIR }, /* HP DeskJet 895C */ |
220 | { 0x03f0, 0x0104, USBLP_QUIRK_BIDIR }, /* HP DeskJet 880C */ | |
221 | { 0x03f0, 0x0204, USBLP_QUIRK_BIDIR }, /* HP DeskJet 815C */ | |
222 | { 0x03f0, 0x0304, USBLP_QUIRK_BIDIR }, /* HP DeskJet 810C/812C */ | |
223 | { 0x03f0, 0x0404, USBLP_QUIRK_BIDIR }, /* HP DeskJet 830C */ | |
224 | { 0x03f0, 0x0504, USBLP_QUIRK_BIDIR }, /* HP DeskJet 885C */ | |
916de027 NK |
225 | { 0x03f0, 0x0604, USBLP_QUIRK_BIDIR }, /* HP DeskJet 840C */ |
226 | { 0x03f0, 0x0804, USBLP_QUIRK_BIDIR }, /* HP DeskJet 816C */ | |
1da177e4 LT |
227 | { 0x03f0, 0x1104, USBLP_QUIRK_BIDIR }, /* HP Deskjet 959C */ |
228 | { 0x0409, 0xefbe, USBLP_QUIRK_BIDIR }, /* NEC Picty900 (HP OEM) */ | |
229 | { 0x0409, 0xbef4, USBLP_QUIRK_BIDIR }, /* NEC Picty760 (HP OEM) */ | |
230 | { 0x0409, 0xf0be, USBLP_QUIRK_BIDIR }, /* NEC Picty920 (HP OEM) */ | |
231 | { 0x0409, 0xf1be, USBLP_QUIRK_BIDIR }, /* NEC Picty800 (HP OEM) */ | |
4f45d038 | 232 | { 0x0482, 0x0010, USBLP_QUIRK_BIDIR }, /* Kyocera Mita FS 820, by zut <kernel@zut.de> */ |
06a743bf | 233 | { 0x04f9, 0x000d, USBLP_QUIRK_BIDIR }, /* Brother Industries, Ltd HL-1440 Laser Printer */ |
5ec71db5 | 234 | { 0x04b8, 0x0202, USBLP_QUIRK_BAD_CLASS }, /* Seiko Epson Receipt Printer M129C */ |
1da177e4 LT |
235 | { 0, 0 } |
236 | }; | |
237 | ||
317c67b8 PZ |
238 | static int usblp_wwait(struct usblp *usblp, int nonblock); |
239 | static int usblp_wtest(struct usblp *usblp, int nonblock); | |
240 | static int usblp_rwait_and_lock(struct usblp *usblp, int nonblock); | |
241 | static int usblp_rtest(struct usblp *usblp, int nonblock); | |
242 | static int usblp_submit_read(struct usblp *usblp); | |
1da177e4 LT |
243 | static int usblp_select_alts(struct usblp *usblp); |
244 | static int usblp_set_protocol(struct usblp *usblp, int protocol); | |
245 | static int usblp_cache_device_id_string(struct usblp *usblp); | |
246 | ||
247 | /* forward reference to make our lives easier */ | |
248 | static struct usb_driver usblp_driver; | |
4186ecf8 | 249 | static DEFINE_MUTEX(usblp_mutex); /* locks the existence of usblp's */ |
1da177e4 LT |
250 | |
251 | /* | |
252 | * Functions for usblp control messages. | |
253 | */ | |
254 | ||
255 | static int usblp_ctrl_msg(struct usblp *usblp, int request, int type, int dir, int recip, int value, void *buf, int len) | |
256 | { | |
257 | int retval; | |
258 | int index = usblp->ifnum; | |
259 | ||
260 | /* High byte has the interface index. | |
261 | Low byte has the alternate setting. | |
262 | */ | |
916de027 NK |
263 | if ((request == USBLP_REQ_GET_ID) && (type == USB_TYPE_CLASS)) |
264 | index = (usblp->ifnum<<8)|usblp->protocol[usblp->current_protocol].alt_setting; | |
1da177e4 LT |
265 | |
266 | retval = usb_control_msg(usblp->dev, | |
267 | dir ? usb_rcvctrlpipe(usblp->dev, 0) : usb_sndctrlpipe(usblp->dev, 0), | |
283face8 | 268 | request, type | dir | recip, value, index, buf, len, USBLP_CTL_TIMEOUT); |
4f306309 GKH |
269 | dev_dbg(&usblp->intf->dev, |
270 | "usblp_control_msg: rq: 0x%02x dir: %d recip: %d value: %d idx: %d len: %#x result: %d\n", | |
1da177e4 LT |
271 | request, !!dir, recip, value, index, len, retval); |
272 | return retval < 0 ? retval : 0; | |
273 | } | |
274 | ||
275 | #define usblp_read_status(usblp, status)\ | |
276 | usblp_ctrl_msg(usblp, USBLP_REQ_GET_STATUS, USB_TYPE_CLASS, USB_DIR_IN, USB_RECIP_INTERFACE, 0, status, 1) | |
277 | #define usblp_get_id(usblp, config, id, maxlen)\ | |
278 | usblp_ctrl_msg(usblp, USBLP_REQ_GET_ID, USB_TYPE_CLASS, USB_DIR_IN, USB_RECIP_INTERFACE, config, id, maxlen) | |
279 | #define usblp_reset(usblp)\ | |
280 | usblp_ctrl_msg(usblp, USBLP_REQ_RESET, USB_TYPE_CLASS, USB_DIR_OUT, USB_RECIP_OTHER, 0, NULL, 0) | |
281 | ||
282 | #define usblp_hp_channel_change_request(usblp, channel, buffer) \ | |
283 | usblp_ctrl_msg(usblp, USBLP_REQ_HP_CHANNEL_CHANGE_REQUEST, USB_TYPE_VENDOR, USB_DIR_IN, USB_RECIP_INTERFACE, channel, buffer, 1) | |
284 | ||
285 | /* | |
286 | * See the description for usblp_select_alts() below for the usage | |
287 | * explanation. Look into your /proc/bus/usb/devices and dmesg in | |
288 | * case of any trouble. | |
289 | */ | |
290 | static int proto_bias = -1; | |
291 | ||
292 | /* | |
293 | * URB callback. | |
294 | */ | |
295 | ||
7d12e780 | 296 | static void usblp_bulk_read(struct urb *urb) |
1da177e4 LT |
297 | { |
298 | struct usblp *usblp = urb->context; | |
18ac3016 | 299 | int status = urb->status; |
1da177e4 | 300 | |
317c67b8 | 301 | if (usblp->present && usblp->used) { |
18ac3016 | 302 | if (status) |
317c67b8 PZ |
303 | printk(KERN_WARNING "usblp%d: " |
304 | "nonzero read bulk status received: %d\n", | |
18ac3016 | 305 | usblp->minor, status); |
317c67b8 PZ |
306 | } |
307 | spin_lock(&usblp->lock); | |
18ac3016 GKH |
308 | if (status < 0) |
309 | usblp->rstatus = status; | |
317c67b8 PZ |
310 | else |
311 | usblp->rstatus = urb->actual_length; | |
1da177e4 | 312 | usblp->rcomplete = 1; |
317c67b8 PZ |
313 | wake_up(&usblp->rwait); |
314 | spin_unlock(&usblp->lock); | |
315 | ||
316 | usb_free_urb(urb); | |
1da177e4 LT |
317 | } |
318 | ||
7d12e780 | 319 | static void usblp_bulk_write(struct urb *urb) |
1da177e4 LT |
320 | { |
321 | struct usblp *usblp = urb->context; | |
18ac3016 | 322 | int status = urb->status; |
1da177e4 | 323 | |
317c67b8 | 324 | if (usblp->present && usblp->used) { |
18ac3016 | 325 | if (status) |
317c67b8 PZ |
326 | printk(KERN_WARNING "usblp%d: " |
327 | "nonzero write bulk status received: %d\n", | |
18ac3016 | 328 | usblp->minor, status); |
317c67b8 PZ |
329 | } |
330 | spin_lock(&usblp->lock); | |
18ac3016 GKH |
331 | if (status < 0) |
332 | usblp->wstatus = status; | |
317c67b8 PZ |
333 | else |
334 | usblp->wstatus = urb->actual_length; | |
7f477358 | 335 | usblp->no_paper = 0; |
1da177e4 | 336 | usblp->wcomplete = 1; |
317c67b8 PZ |
337 | wake_up(&usblp->wwait); |
338 | spin_unlock(&usblp->lock); | |
339 | ||
317c67b8 | 340 | usb_free_urb(urb); |
1da177e4 LT |
341 | } |
342 | ||
343 | /* | |
344 | * Get and print printer errors. | |
345 | */ | |
346 | ||
4c4c9432 | 347 | static const char *usblp_messages[] = { "ok", "out of paper", "off-line", "on fire" }; |
1da177e4 LT |
348 | |
349 | static int usblp_check_status(struct usblp *usblp, int err) | |
350 | { | |
351 | unsigned char status, newerr = 0; | |
352 | int error; | |
353 | ||
fc401e69 PZ |
354 | mutex_lock(&usblp->mut); |
355 | if ((error = usblp_read_status(usblp, usblp->statusbuf)) < 0) { | |
356 | mutex_unlock(&usblp->mut); | |
305e7be5 | 357 | printk_ratelimited(KERN_ERR |
317c67b8 | 358 | "usblp%d: error %d reading printer status\n", |
0bc8e009 | 359 | usblp->minor, error); |
1da177e4 LT |
360 | return 0; |
361 | } | |
1da177e4 | 362 | status = *usblp->statusbuf; |
fc401e69 | 363 | mutex_unlock(&usblp->mut); |
1da177e4 LT |
364 | |
365 | if (~status & LP_PERRORP) | |
366 | newerr = 3; | |
367 | if (status & LP_POUTPA) | |
368 | newerr = 1; | |
369 | if (~status & LP_PSELECD) | |
370 | newerr = 2; | |
371 | ||
317c67b8 PZ |
372 | if (newerr != err) { |
373 | printk(KERN_INFO "usblp%d: %s\n", | |
374 | usblp->minor, usblp_messages[newerr]); | |
375 | } | |
1da177e4 LT |
376 | |
377 | return newerr; | |
378 | } | |
379 | ||
916de027 | 380 | static int handle_bidir(struct usblp *usblp) |
516077c1 | 381 | { |
3a90f818 | 382 | if (usblp->bidir && usblp->used) { |
317c67b8 | 383 | if (usblp_submit_read(usblp) < 0) |
516077c1 | 384 | return -EIO; |
516077c1 | 385 | } |
516077c1 ON |
386 | return 0; |
387 | } | |
388 | ||
1da177e4 LT |
389 | /* |
390 | * File op functions. | |
391 | */ | |
392 | ||
393 | static int usblp_open(struct inode *inode, struct file *file) | |
394 | { | |
395 | int minor = iminor(inode); | |
396 | struct usblp *usblp; | |
397 | struct usb_interface *intf; | |
398 | int retval; | |
399 | ||
400 | if (minor < 0) | |
401 | return -ENODEV; | |
402 | ||
916de027 | 403 | mutex_lock(&usblp_mutex); |
1da177e4 LT |
404 | |
405 | retval = -ENODEV; | |
406 | intf = usb_find_interface(&usblp_driver, minor); | |
916de027 | 407 | if (!intf) |
1da177e4 | 408 | goto out; |
916de027 | 409 | usblp = usb_get_intfdata(intf); |
1da177e4 LT |
410 | if (!usblp || !usblp->dev || !usblp->present) |
411 | goto out; | |
412 | ||
413 | retval = -EBUSY; | |
414 | if (usblp->used) | |
415 | goto out; | |
416 | ||
417 | /* | |
7f477358 PZ |
418 | * We do not implement LP_ABORTOPEN/LPABORTOPEN for two reasons: |
419 | * - We do not want persistent state which close(2) does not clear | |
420 | * - It is not used anyway, according to CUPS people | |
1da177e4 | 421 | */ |
1da177e4 | 422 | |
d0532184 ON |
423 | retval = usb_autopm_get_interface(intf); |
424 | if (retval < 0) | |
425 | goto out; | |
1da177e4 LT |
426 | usblp->used = 1; |
427 | file->private_data = usblp; | |
428 | ||
1da177e4 | 429 | usblp->wcomplete = 1; /* we begin writeable */ |
317c67b8 | 430 | usblp->wstatus = 0; |
1da177e4 LT |
431 | usblp->rcomplete = 0; |
432 | ||
516077c1 | 433 | if (handle_bidir(usblp) < 0) { |
19028690 | 434 | usb_autopm_put_interface(intf); |
97cb95d1 | 435 | usblp->used = 0; |
516077c1 ON |
436 | file->private_data = NULL; |
437 | retval = -EIO; | |
1da177e4 LT |
438 | } |
439 | out: | |
916de027 | 440 | mutex_unlock(&usblp_mutex); |
1da177e4 LT |
441 | return retval; |
442 | } | |
443 | ||
916de027 | 444 | static void usblp_cleanup(struct usblp *usblp) |
1da177e4 | 445 | { |
317c67b8 | 446 | printk(KERN_INFO "usblp%d: removed\n", usblp->minor); |
1da177e4 | 447 | |
317c67b8 | 448 | kfree(usblp->readbuf); |
916de027 NK |
449 | kfree(usblp->device_id_string); |
450 | kfree(usblp->statusbuf); | |
451 | kfree(usblp); | |
1da177e4 LT |
452 | } |
453 | ||
454 | static void usblp_unlink_urbs(struct usblp *usblp) | |
455 | { | |
317c67b8 | 456 | usb_kill_anchored_urbs(&usblp->urbs); |
1da177e4 LT |
457 | } |
458 | ||
459 | static int usblp_release(struct inode *inode, struct file *file) | |
460 | { | |
461 | struct usblp *usblp = file->private_data; | |
462 | ||
7f477358 PZ |
463 | usblp->flags &= ~LP_ABORT; |
464 | ||
916de027 | 465 | mutex_lock(&usblp_mutex); |
1da177e4 LT |
466 | usblp->used = 0; |
467 | if (usblp->present) { | |
468 | usblp_unlink_urbs(usblp); | |
d0532184 | 469 | usb_autopm_put_interface(usblp->intf); |
916de027 NK |
470 | } else /* finish cleanup from disconnect */ |
471 | usblp_cleanup(usblp); | |
472 | mutex_unlock(&usblp_mutex); | |
1da177e4 LT |
473 | return 0; |
474 | } | |
475 | ||
476 | /* No kernel lock - fine */ | |
477 | static unsigned int usblp_poll(struct file *file, struct poll_table_struct *wait) | |
478 | { | |
317c67b8 PZ |
479 | int ret; |
480 | unsigned long flags; | |
481 | ||
1da177e4 | 482 | struct usblp *usblp = file->private_data; |
317c67b8 PZ |
483 | /* Should we check file->f_mode & FMODE_WRITE before poll_wait()? */ |
484 | poll_wait(file, &usblp->rwait, wait); | |
485 | poll_wait(file, &usblp->wwait, wait); | |
486 | spin_lock_irqsave(&usblp->lock, flags); | |
283face8 PZ |
487 | ret = ((usblp->bidir && usblp->rcomplete) ? POLLIN | POLLRDNORM : 0) | |
488 | ((usblp->no_paper || usblp->wcomplete) ? POLLOUT | POLLWRNORM : 0); | |
317c67b8 PZ |
489 | spin_unlock_irqrestore(&usblp->lock, flags); |
490 | return ret; | |
1da177e4 LT |
491 | } |
492 | ||
318e479e | 493 | static long usblp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
1da177e4 LT |
494 | { |
495 | struct usblp *usblp = file->private_data; | |
496 | int length, err, i; | |
497 | unsigned char newChannel; | |
498 | int status; | |
499 | int twoints[2]; | |
500 | int retval = 0; | |
501 | ||
916de027 | 502 | mutex_lock(&usblp->mut); |
1da177e4 LT |
503 | if (!usblp->present) { |
504 | retval = -ENODEV; | |
505 | goto done; | |
506 | } | |
507 | ||
4f306309 GKH |
508 | dev_dbg(&usblp->intf->dev, |
509 | "usblp_ioctl: cmd=0x%x (%c nr=%d len=%d dir=%d)\n", cmd, | |
510 | _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd), _IOC_DIR(cmd)); | |
1da177e4 LT |
511 | |
512 | if (_IOC_TYPE(cmd) == 'P') /* new-style ioctl number */ | |
513 | ||
514 | switch (_IOC_NR(cmd)) { | |
515 | ||
916de027 NK |
516 | case IOCNR_GET_DEVICE_ID: /* get the DEVICE_ID string */ |
517 | if (_IOC_DIR(cmd) != _IOC_READ) { | |
518 | retval = -EINVAL; | |
519 | goto done; | |
520 | } | |
1da177e4 | 521 | |
916de027 NK |
522 | length = usblp_cache_device_id_string(usblp); |
523 | if (length < 0) { | |
524 | retval = length; | |
525 | goto done; | |
526 | } | |
527 | if (length > _IOC_SIZE(cmd)) | |
528 | length = _IOC_SIZE(cmd); /* truncate */ | |
529 | ||
530 | if (copy_to_user((void __user *) arg, | |
531 | usblp->device_id_string, | |
532 | (unsigned long) length)) { | |
533 | retval = -EFAULT; | |
534 | goto done; | |
535 | } | |
1da177e4 | 536 | |
916de027 | 537 | break; |
1da177e4 | 538 | |
916de027 NK |
539 | case IOCNR_GET_PROTOCOLS: |
540 | if (_IOC_DIR(cmd) != _IOC_READ || | |
541 | _IOC_SIZE(cmd) < sizeof(twoints)) { | |
542 | retval = -EINVAL; | |
543 | goto done; | |
544 | } | |
1da177e4 | 545 | |
916de027 NK |
546 | twoints[0] = usblp->current_protocol; |
547 | twoints[1] = 0; | |
548 | for (i = USBLP_FIRST_PROTOCOL; | |
549 | i <= USBLP_LAST_PROTOCOL; i++) { | |
550 | if (usblp->protocol[i].alt_setting >= 0) | |
551 | twoints[1] |= (1<<i); | |
552 | } | |
1da177e4 | 553 | |
916de027 NK |
554 | if (copy_to_user((void __user *)arg, |
555 | (unsigned char *)twoints, | |
556 | sizeof(twoints))) { | |
557 | retval = -EFAULT; | |
558 | goto done; | |
559 | } | |
1da177e4 | 560 | |
916de027 | 561 | break; |
1da177e4 | 562 | |
916de027 NK |
563 | case IOCNR_SET_PROTOCOL: |
564 | if (_IOC_DIR(cmd) != _IOC_WRITE) { | |
565 | retval = -EINVAL; | |
566 | goto done; | |
567 | } | |
1da177e4 LT |
568 | |
569 | #ifdef DEBUG | |
916de027 NK |
570 | if (arg == -10) { |
571 | usblp_dump(usblp); | |
572 | break; | |
573 | } | |
1da177e4 LT |
574 | #endif |
575 | ||
916de027 NK |
576 | usblp_unlink_urbs(usblp); |
577 | retval = usblp_set_protocol(usblp, arg); | |
578 | if (retval < 0) { | |
579 | usblp_set_protocol(usblp, | |
580 | usblp->current_protocol); | |
581 | } | |
582 | break; | |
1da177e4 | 583 | |
916de027 NK |
584 | case IOCNR_HP_SET_CHANNEL: |
585 | if (_IOC_DIR(cmd) != _IOC_WRITE || | |
586 | le16_to_cpu(usblp->dev->descriptor.idVendor) != 0x03F0 || | |
587 | usblp->quirks & USBLP_QUIRK_BIDIR) { | |
588 | retval = -EINVAL; | |
589 | goto done; | |
590 | } | |
1da177e4 | 591 | |
916de027 NK |
592 | err = usblp_hp_channel_change_request(usblp, |
593 | arg, &newChannel); | |
594 | if (err < 0) { | |
595 | dev_err(&usblp->dev->dev, | |
596 | "usblp%d: error = %d setting " | |
597 | "HP channel\n", | |
598 | usblp->minor, err); | |
599 | retval = -EIO; | |
600 | goto done; | |
601 | } | |
1da177e4 | 602 | |
4f306309 GKH |
603 | dev_dbg(&usblp->intf->dev, |
604 | "usblp%d requested/got HP channel %ld/%d\n", | |
916de027 NK |
605 | usblp->minor, arg, newChannel); |
606 | break; | |
1da177e4 | 607 | |
916de027 NK |
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 | } | |
1da177e4 | 614 | |
916de027 NK |
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 | } | |
1da177e4 | 623 | |
4f306309 GKH |
624 | dev_dbg(&usblp->intf->dev, |
625 | "usblp%d is bus=%d, device=%d\n", | |
916de027 NK |
626 | usblp->minor, twoints[0], twoints[1]); |
627 | break; | |
1da177e4 | 628 | |
916de027 NK |
629 | case IOCNR_GET_VID_PID: |
630 | if (_IOC_DIR(cmd) != _IOC_READ || | |
631 | _IOC_SIZE(cmd) < sizeof(twoints)) { | |
632 | retval = -EINVAL; | |
633 | goto done; | |
634 | } | |
1da177e4 | 635 | |
916de027 NK |
636 | twoints[0] = le16_to_cpu(usblp->dev->descriptor.idVendor); |
637 | twoints[1] = le16_to_cpu(usblp->dev->descriptor.idProduct); | |
638 | if (copy_to_user((void __user *)arg, | |
639 | (unsigned char *)twoints, | |
640 | sizeof(twoints))) { | |
641 | retval = -EFAULT; | |
642 | goto done; | |
643 | } | |
1da177e4 | 644 | |
4f306309 GKH |
645 | dev_dbg(&usblp->intf->dev, |
646 | "usblp%d is VID=0x%4.4X, PID=0x%4.4X\n", | |
916de027 NK |
647 | usblp->minor, twoints[0], twoints[1]); |
648 | break; | |
1da177e4 | 649 | |
916de027 NK |
650 | case IOCNR_SOFT_RESET: |
651 | if (_IOC_DIR(cmd) != _IOC_NONE) { | |
652 | retval = -EINVAL; | |
653 | goto done; | |
654 | } | |
655 | retval = usblp_reset(usblp); | |
656 | break; | |
657 | default: | |
658 | retval = -ENOTTY; | |
1da177e4 LT |
659 | } |
660 | else /* old-style ioctl value */ | |
661 | switch (cmd) { | |
662 | ||
916de027 NK |
663 | case LPGETSTATUS: |
664 | if ((retval = usblp_read_status(usblp, usblp->statusbuf))) { | |
305e7be5 | 665 | printk_ratelimited(KERN_ERR "usblp%d:" |
916de027 NK |
666 | "failed reading printer status (%d)\n", |
667 | usblp->minor, retval); | |
668 | retval = -EIO; | |
669 | goto done; | |
670 | } | |
671 | status = *usblp->statusbuf; | |
672 | if (copy_to_user((void __user *)arg, &status, sizeof(int))) | |
673 | retval = -EFAULT; | |
674 | break; | |
1da177e4 | 675 | |
916de027 NK |
676 | case LPABORT: |
677 | if (arg) | |
678 | usblp->flags |= LP_ABORT; | |
679 | else | |
680 | usblp->flags &= ~LP_ABORT; | |
681 | break; | |
7f477358 | 682 | |
916de027 NK |
683 | default: |
684 | retval = -ENOTTY; | |
1da177e4 LT |
685 | } |
686 | ||
687 | done: | |
916de027 | 688 | mutex_unlock(&usblp->mut); |
1da177e4 LT |
689 | return retval; |
690 | } | |
691 | ||
42cb967f PZ |
692 | static struct urb *usblp_new_writeurb(struct usblp *usblp, int transfer_length) |
693 | { | |
694 | struct urb *urb; | |
695 | char *writebuf; | |
696 | ||
697 | if ((writebuf = kmalloc(transfer_length, GFP_KERNEL)) == NULL) | |
698 | return NULL; | |
699 | if ((urb = usb_alloc_urb(0, GFP_KERNEL)) == NULL) { | |
700 | kfree(writebuf); | |
701 | return NULL; | |
702 | } | |
703 | ||
704 | usb_fill_bulk_urb(urb, usblp->dev, | |
705 | usb_sndbulkpipe(usblp->dev, | |
706 | usblp->protocol[usblp->current_protocol].epwrite->bEndpointAddress), | |
707 | writebuf, transfer_length, usblp_bulk_write, usblp); | |
708 | urb->transfer_flags |= URB_FREE_BUFFER; | |
709 | ||
710 | return urb; | |
711 | } | |
712 | ||
1da177e4 LT |
713 | static ssize_t usblp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) |
714 | { | |
1da177e4 | 715 | struct usblp *usblp = file->private_data; |
317c67b8 PZ |
716 | struct urb *writeurb; |
717 | int rv; | |
718 | int transfer_length; | |
719 | ssize_t writecount = 0; | |
720 | ||
721 | if (mutex_lock_interruptible(&usblp->wmut)) { | |
722 | rv = -EINTR; | |
723 | goto raise_biglock; | |
724 | } | |
725 | if ((rv = usblp_wwait(usblp, !!(file->f_flags & O_NONBLOCK))) < 0) | |
726 | goto raise_wait; | |
1da177e4 LT |
727 | |
728 | while (writecount < count) { | |
317c67b8 PZ |
729 | /* |
730 | * Step 1: Submit next block. | |
1da177e4 | 731 | */ |
317c67b8 | 732 | if ((transfer_length = count - writecount) > USBLP_BUF_SIZE) |
1da177e4 LT |
733 | transfer_length = USBLP_BUF_SIZE; |
734 | ||
317c67b8 | 735 | rv = -ENOMEM; |
42cb967f | 736 | if ((writeurb = usblp_new_writeurb(usblp, transfer_length)) == NULL) |
317c67b8 | 737 | goto raise_urb; |
317c67b8 PZ |
738 | usb_anchor_urb(writeurb, &usblp->urbs); |
739 | ||
42cb967f | 740 | if (copy_from_user(writeurb->transfer_buffer, |
1da177e4 | 741 | buffer + writecount, transfer_length)) { |
317c67b8 PZ |
742 | rv = -EFAULT; |
743 | goto raise_badaddr; | |
1da177e4 LT |
744 | } |
745 | ||
317c67b8 | 746 | spin_lock_irq(&usblp->lock); |
1da177e4 | 747 | usblp->wcomplete = 0; |
317c67b8 PZ |
748 | spin_unlock_irq(&usblp->lock); |
749 | if ((rv = usb_submit_urb(writeurb, GFP_KERNEL)) < 0) { | |
750 | usblp->wstatus = 0; | |
751 | spin_lock_irq(&usblp->lock); | |
7f477358 | 752 | usblp->no_paper = 0; |
6c8df79f | 753 | usblp->wcomplete = 1; |
317c67b8 PZ |
754 | wake_up(&usblp->wwait); |
755 | spin_unlock_irq(&usblp->lock); | |
756 | if (rv != -ENOMEM) | |
757 | rv = -EIO; | |
758 | goto raise_submit; | |
759 | } | |
760 | ||
761 | /* | |
762 | * Step 2: Wait for transfer to end, collect results. | |
763 | */ | |
764 | rv = usblp_wwait(usblp, !!(file->f_flags&O_NONBLOCK)); | |
765 | if (rv < 0) { | |
10e48522 PZ |
766 | if (rv == -EAGAIN) { |
767 | /* Presume that it's going to complete well. */ | |
768 | writecount += transfer_length; | |
769 | } | |
7f477358 PZ |
770 | if (rv == -ENOSPC) { |
771 | spin_lock_irq(&usblp->lock); | |
772 | usblp->no_paper = 1; /* Mark for poll(2) */ | |
773 | spin_unlock_irq(&usblp->lock); | |
774 | writecount += transfer_length; | |
775 | } | |
10e48522 | 776 | /* Leave URB dangling, to be cleaned on close. */ |
317c67b8 | 777 | goto collect_error; |
1da177e4 | 778 | } |
317c67b8 PZ |
779 | |
780 | if (usblp->wstatus < 0) { | |
317c67b8 PZ |
781 | rv = -EIO; |
782 | goto collect_error; | |
783 | } | |
784 | /* | |
785 | * This is critical: it must be our URB, not other writer's. | |
786 | * The wmut exists mainly to cover us here. | |
787 | */ | |
788 | writecount += usblp->wstatus; | |
1da177e4 LT |
789 | } |
790 | ||
317c67b8 PZ |
791 | mutex_unlock(&usblp->wmut); |
792 | return writecount; | |
793 | ||
794 | raise_submit: | |
795 | raise_badaddr: | |
796 | usb_unanchor_urb(writeurb); | |
797 | usb_free_urb(writeurb); | |
798 | raise_urb: | |
317c67b8 PZ |
799 | raise_wait: |
800 | collect_error: /* Out of raise sequence */ | |
801 | mutex_unlock(&usblp->wmut); | |
802 | raise_biglock: | |
803 | return writecount ? writecount : rv; | |
1da177e4 LT |
804 | } |
805 | ||
317c67b8 PZ |
806 | /* |
807 | * Notice that we fail to restart in a few cases: on EFAULT, on restart | |
808 | * error, etc. This is the historical behaviour. In all such cases we return | |
809 | * EIO, and applications loop in order to get the new read going. | |
810 | */ | |
811 | static ssize_t usblp_read(struct file *file, char __user *buffer, size_t len, loff_t *ppos) | |
1da177e4 LT |
812 | { |
813 | struct usblp *usblp = file->private_data; | |
317c67b8 PZ |
814 | ssize_t count; |
815 | ssize_t avail; | |
816 | int rv; | |
1da177e4 LT |
817 | |
818 | if (!usblp->bidir) | |
819 | return -EINVAL; | |
820 | ||
317c67b8 PZ |
821 | rv = usblp_rwait_and_lock(usblp, !!(file->f_flags & O_NONBLOCK)); |
822 | if (rv < 0) | |
823 | return rv; | |
824 | ||
825 | if ((avail = usblp->rstatus) < 0) { | |
826 | printk(KERN_ERR "usblp%d: error %d reading from printer\n", | |
827 | usblp->minor, (int)avail); | |
828 | usblp_submit_read(usblp); | |
829 | count = -EIO; | |
1da177e4 LT |
830 | goto done; |
831 | } | |
832 | ||
317c67b8 PZ |
833 | count = len < avail - usblp->readcount ? len : avail - usblp->readcount; |
834 | if (count != 0 && | |
835 | copy_to_user(buffer, usblp->readbuf + usblp->readcount, count)) { | |
836 | count = -EFAULT; | |
837 | goto done; | |
838 | } | |
1da177e4 | 839 | |
317c67b8 PZ |
840 | if ((usblp->readcount += count) == avail) { |
841 | if (usblp_submit_read(usblp) < 0) { | |
842 | /* We don't want to leak USB return codes into errno. */ | |
843 | if (count == 0) | |
844 | count = -EIO; | |
8e695cdb | 845 | goto done; |
1da177e4 | 846 | } |
1da177e4 LT |
847 | } |
848 | ||
317c67b8 | 849 | done: |
916de027 | 850 | mutex_unlock(&usblp->mut); |
317c67b8 PZ |
851 | return count; |
852 | } | |
853 | ||
854 | /* | |
855 | * Wait for the write path to come idle. | |
856 | * This is called under the ->wmut, so the idle path stays idle. | |
857 | * | |
858 | * Our write path has a peculiar property: it does not buffer like a tty, | |
859 | * but waits for the write to succeed. This allows our ->release to bug out | |
860 | * without waiting for writes to drain. But it obviously does not work | |
861 | * when O_NONBLOCK is set. So, applications setting O_NONBLOCK must use | |
862 | * select(2) or poll(2) to wait for the buffer to drain before closing. | |
863 | * Alternatively, set blocking mode with fcntl and issue a zero-size write. | |
317c67b8 PZ |
864 | */ |
865 | static int usblp_wwait(struct usblp *usblp, int nonblock) | |
866 | { | |
867 | DECLARE_WAITQUEUE(waita, current); | |
868 | int rc; | |
7f477358 | 869 | int err = 0; |
317c67b8 PZ |
870 | |
871 | add_wait_queue(&usblp->wwait, &waita); | |
872 | for (;;) { | |
7f477358 | 873 | set_current_state(TASK_INTERRUPTIBLE); |
317c67b8 PZ |
874 | if (mutex_lock_interruptible(&usblp->mut)) { |
875 | rc = -EINTR; | |
876 | break; | |
877 | } | |
7f477358 | 878 | rc = usblp_wtest(usblp, nonblock); |
317c67b8 | 879 | mutex_unlock(&usblp->mut); |
7f477358 | 880 | if (rc <= 0) |
317c67b8 | 881 | break; |
7f477358 | 882 | |
dd44be6b PZ |
883 | if (schedule_timeout(msecs_to_jiffies(1500)) == 0) { |
884 | if (usblp->flags & LP_ABORT) { | |
7f477358 PZ |
885 | err = usblp_check_status(usblp, err); |
886 | if (err == 1) { /* Paper out */ | |
887 | rc = -ENOSPC; | |
888 | break; | |
889 | } | |
dd44be6b PZ |
890 | } else { |
891 | /* Prod the printer, Gentoo#251237. */ | |
892 | mutex_lock(&usblp->mut); | |
893 | usblp_read_status(usblp, usblp->statusbuf); | |
894 | mutex_unlock(&usblp->mut); | |
7f477358 | 895 | } |
7f477358 | 896 | } |
1da177e4 | 897 | } |
317c67b8 PZ |
898 | set_current_state(TASK_RUNNING); |
899 | remove_wait_queue(&usblp->wwait, &waita); | |
900 | return rc; | |
901 | } | |
1da177e4 | 902 | |
317c67b8 PZ |
903 | static int usblp_wtest(struct usblp *usblp, int nonblock) |
904 | { | |
905 | unsigned long flags; | |
906 | ||
907 | if (!usblp->present) | |
908 | return -ENODEV; | |
909 | if (signal_pending(current)) | |
910 | return -EINTR; | |
911 | spin_lock_irqsave(&usblp->lock, flags); | |
912 | if (usblp->wcomplete) { | |
913 | spin_unlock_irqrestore(&usblp->lock, flags); | |
914 | return 0; | |
516077c1 | 915 | } |
317c67b8 | 916 | spin_unlock_irqrestore(&usblp->lock, flags); |
317c67b8 PZ |
917 | if (nonblock) |
918 | return -EAGAIN; | |
919 | return 1; | |
920 | } | |
516077c1 | 921 | |
317c67b8 PZ |
922 | /* |
923 | * Wait for read bytes to become available. This probably should have been | |
924 | * called usblp_r_lock_and_wait(), because we lock first. But it's a traditional | |
925 | * name for functions which lock and return. | |
926 | * | |
927 | * We do not use wait_event_interruptible because it makes locking iffy. | |
928 | */ | |
929 | static int usblp_rwait_and_lock(struct usblp *usblp, int nonblock) | |
930 | { | |
931 | DECLARE_WAITQUEUE(waita, current); | |
932 | int rc; | |
933 | ||
934 | add_wait_queue(&usblp->rwait, &waita); | |
935 | for (;;) { | |
936 | if (mutex_lock_interruptible(&usblp->mut)) { | |
937 | rc = -EINTR; | |
938 | break; | |
939 | } | |
940 | set_current_state(TASK_INTERRUPTIBLE); | |
941 | if ((rc = usblp_rtest(usblp, nonblock)) < 0) { | |
942 | mutex_unlock(&usblp->mut); | |
943 | break; | |
944 | } | |
945 | if (rc == 0) /* Keep it locked */ | |
946 | break; | |
947 | mutex_unlock(&usblp->mut); | |
948 | schedule(); | |
1da177e4 | 949 | } |
317c67b8 PZ |
950 | set_current_state(TASK_RUNNING); |
951 | remove_wait_queue(&usblp->rwait, &waita); | |
952 | return rc; | |
953 | } | |
1da177e4 | 954 | |
317c67b8 PZ |
955 | static int usblp_rtest(struct usblp *usblp, int nonblock) |
956 | { | |
957 | unsigned long flags; | |
1da177e4 | 958 | |
317c67b8 PZ |
959 | if (!usblp->present) |
960 | return -ENODEV; | |
961 | if (signal_pending(current)) | |
962 | return -EINTR; | |
963 | spin_lock_irqsave(&usblp->lock, flags); | |
964 | if (usblp->rcomplete) { | |
965 | spin_unlock_irqrestore(&usblp->lock, flags); | |
966 | return 0; | |
1da177e4 | 967 | } |
317c67b8 | 968 | spin_unlock_irqrestore(&usblp->lock, flags); |
317c67b8 PZ |
969 | if (nonblock) |
970 | return -EAGAIN; | |
971 | return 1; | |
972 | } | |
1da177e4 | 973 | |
317c67b8 PZ |
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) { | |
4f306309 | 999 | dev_dbg(&usblp->intf->dev, "error submitting urb (%d)\n", rc); |
317c67b8 PZ |
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; | |
1da177e4 LT |
1005 | } |
1006 | ||
317c67b8 PZ |
1007 | return 0; |
1008 | ||
1009 | raise_submit: | |
1010 | usb_unanchor_urb(urb); | |
1011 | usb_free_urb(urb); | |
1012 | raise_urb: | |
1013 | return rc; | |
1da177e4 LT |
1014 | } |
1015 | ||
1016 | /* | |
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 | */ | |
916de027 | 1033 | static unsigned int usblp_quirks(__u16 vendor, __u16 product) |
1da177e4 LT |
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; | |
916de027 | 1041 | } |
1da177e4 LT |
1042 | return 0; |
1043 | } | |
1044 | ||
066202dd | 1045 | static const struct file_operations usblp_fops = { |
1da177e4 LT |
1046 | .owner = THIS_MODULE, |
1047 | .read = usblp_read, | |
1048 | .write = usblp_write, | |
1049 | .poll = usblp_poll, | |
318e479e PZ |
1050 | .unlocked_ioctl = usblp_ioctl, |
1051 | .compat_ioctl = usblp_ioctl, | |
1da177e4 LT |
1052 | .open = usblp_open, |
1053 | .release = usblp_release, | |
6038f373 | 1054 | .llseek = noop_llseek, |
1da177e4 LT |
1055 | }; |
1056 | ||
2c9ede55 | 1057 | static char *usblp_devnode(struct device *dev, umode_t *mode) |
f7a386c5 KS |
1058 | { |
1059 | return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev)); | |
1060 | } | |
1061 | ||
1da177e4 | 1062 | static struct usb_class_driver usblp_class = { |
d6e5bcf4 | 1063 | .name = "lp%d", |
e454cea2 | 1064 | .devnode = usblp_devnode, |
1da177e4 | 1065 | .fops = &usblp_fops, |
1da177e4 LT |
1066 | .minor_base = USBLP_MINOR_BASE, |
1067 | }; | |
1068 | ||
a9714c84 DW |
1069 | static ssize_t usblp_show_ieee1284_id(struct device *dev, struct device_attribute *attr, char *buf) |
1070 | { | |
1071 | struct usb_interface *intf = to_usb_interface(dev); | |
916de027 | 1072 | struct usblp *usblp = usb_get_intfdata(intf); |
a9714c84 DW |
1073 | |
1074 | if (usblp->device_id_string[0] == 0 && | |
1075 | usblp->device_id_string[1] == 0) | |
1076 | return 0; | |
1077 | ||
1078 | return sprintf(buf, "%s", usblp->device_id_string+2); | |
1079 | } | |
1080 | ||
1081 | static DEVICE_ATTR(ieee1284_id, S_IRUGO, usblp_show_ieee1284_id, NULL); | |
1082 | ||
1da177e4 LT |
1083 | static int usblp_probe(struct usb_interface *intf, |
1084 | const struct usb_device_id *id) | |
1085 | { | |
916de027 | 1086 | struct usb_device *dev = interface_to_usbdev(intf); |
49b707b9 | 1087 | struct usblp *usblp; |
1da177e4 LT |
1088 | int protocol; |
1089 | int retval; | |
1090 | ||
1091 | /* Malloc and start initializing usblp structure so we can use it | |
1092 | * directly. */ | |
49b707b9 JL |
1093 | usblp = kzalloc(sizeof(struct usblp), GFP_KERNEL); |
1094 | if (!usblp) { | |
317c67b8 | 1095 | retval = -ENOMEM; |
49b707b9 | 1096 | goto abort_ret; |
1da177e4 | 1097 | } |
1da177e4 | 1098 | usblp->dev = dev; |
317c67b8 | 1099 | mutex_init(&usblp->wmut); |
916de027 | 1100 | mutex_init(&usblp->mut); |
317c67b8 PZ |
1101 | spin_lock_init(&usblp->lock); |
1102 | init_waitqueue_head(&usblp->rwait); | |
1103 | init_waitqueue_head(&usblp->wwait); | |
1104 | init_usb_anchor(&usblp->urbs); | |
1da177e4 LT |
1105 | usblp->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
1106 | usblp->intf = intf; | |
1107 | ||
1da177e4 LT |
1108 | /* Malloc device ID string buffer to the largest expected length, |
1109 | * since we can re-query it on an ioctl and a dynamic string | |
1110 | * could change in length. */ | |
1111 | if (!(usblp->device_id_string = kmalloc(USBLP_DEVICE_ID_SIZE, GFP_KERNEL))) { | |
317c67b8 | 1112 | retval = -ENOMEM; |
1da177e4 LT |
1113 | goto abort; |
1114 | } | |
1115 | ||
317c67b8 PZ |
1116 | /* |
1117 | * Allocate read buffer. We somewhat wastefully | |
1da177e4 | 1118 | * malloc both regardless of bidirectionality, because the |
317c67b8 PZ |
1119 | * alternate setting can be changed later via an ioctl. |
1120 | */ | |
1121 | if (!(usblp->readbuf = kmalloc(USBLP_BUF_SIZE_IN, GFP_KERNEL))) { | |
1122 | retval = -ENOMEM; | |
1da177e4 LT |
1123 | goto abort; |
1124 | } | |
1125 | ||
1126 | /* Allocate buffer for printer status */ | |
1127 | usblp->statusbuf = kmalloc(STATUS_BUF_SIZE, GFP_KERNEL); | |
1128 | if (!usblp->statusbuf) { | |
317c67b8 | 1129 | retval = -ENOMEM; |
1da177e4 LT |
1130 | goto abort; |
1131 | } | |
1132 | ||
1133 | /* Lookup quirks for this printer. */ | |
1134 | usblp->quirks = usblp_quirks( | |
1135 | le16_to_cpu(dev->descriptor.idVendor), | |
1136 | le16_to_cpu(dev->descriptor.idProduct)); | |
1137 | ||
1138 | /* Analyze and pick initial alternate settings and endpoints. */ | |
1139 | protocol = usblp_select_alts(usblp); | |
1140 | if (protocol < 0) { | |
4f306309 GKH |
1141 | dev_dbg(&intf->dev, |
1142 | "incompatible printer-class device 0x%4.4X/0x%4.4X\n", | |
1da177e4 LT |
1143 | le16_to_cpu(dev->descriptor.idVendor), |
1144 | le16_to_cpu(dev->descriptor.idProduct)); | |
317c67b8 | 1145 | retval = -ENODEV; |
1da177e4 LT |
1146 | goto abort; |
1147 | } | |
1148 | ||
1149 | /* Setup the selected alternate setting and endpoints. */ | |
317c67b8 PZ |
1150 | if (usblp_set_protocol(usblp, protocol) < 0) { |
1151 | retval = -ENODEV; /* ->probe isn't ->ioctl */ | |
1da177e4 | 1152 | goto abort; |
317c67b8 | 1153 | } |
1da177e4 LT |
1154 | |
1155 | /* Retrieve and store the device ID string. */ | |
1156 | usblp_cache_device_id_string(usblp); | |
96cede53 GKH |
1157 | retval = device_create_file(&intf->dev, &dev_attr_ieee1284_id); |
1158 | if (retval) | |
1159 | goto abort_intfdata; | |
1da177e4 LT |
1160 | |
1161 | #ifdef DEBUG | |
1162 | usblp_check_status(usblp, 0); | |
1163 | #endif | |
1164 | ||
916de027 | 1165 | usb_set_intfdata(intf, usblp); |
1da177e4 LT |
1166 | |
1167 | usblp->present = 1; | |
1168 | ||
1169 | retval = usb_register_dev(intf, &usblp_class); | |
1170 | if (retval) { | |
4f306309 GKH |
1171 | dev_err(&intf->dev, |
1172 | "usblp: Not able to get a minor (base %u, slice default): %d\n", | |
1173 | USBLP_MINOR_BASE, retval); | |
1da177e4 LT |
1174 | goto abort_intfdata; |
1175 | } | |
1176 | usblp->minor = intf->minor; | |
4f306309 GKH |
1177 | dev_info(&intf->dev, |
1178 | "usblp%d: USB %sdirectional printer dev %d if %d alt %d proto %d vid 0x%4.4X pid 0x%4.4X\n", | |
a9714c84 DW |
1179 | usblp->minor, usblp->bidir ? "Bi" : "Uni", dev->devnum, |
1180 | usblp->ifnum, | |
1181 | usblp->protocol[usblp->current_protocol].alt_setting, | |
1182 | usblp->current_protocol, | |
1183 | le16_to_cpu(usblp->dev->descriptor.idVendor), | |
1184 | le16_to_cpu(usblp->dev->descriptor.idProduct)); | |
1da177e4 LT |
1185 | |
1186 | return 0; | |
1187 | ||
1188 | abort_intfdata: | |
916de027 | 1189 | usb_set_intfdata(intf, NULL); |
a9714c84 | 1190 | device_remove_file(&intf->dev, &dev_attr_ieee1284_id); |
1da177e4 | 1191 | abort: |
49b707b9 JL |
1192 | kfree(usblp->readbuf); |
1193 | kfree(usblp->statusbuf); | |
1194 | kfree(usblp->device_id_string); | |
1195 | kfree(usblp); | |
1196 | abort_ret: | |
317c67b8 | 1197 | return retval; |
1da177e4 LT |
1198 | } |
1199 | ||
1200 | /* | |
1201 | * We are a "new" style driver with usb_device_id table, | |
1202 | * but our requirements are too intricate for simple match to handle. | |
1203 | * | |
1204 | * The "proto_bias" option may be used to specify the preferred protocol | |
1205 | * for all USB printers (1=7/1/1, 2=7/1/2, 3=7/1/3). If the device | |
1206 | * supports the preferred protocol, then we bind to it. | |
1207 | * | |
1208 | * The best interface for us is 7/1/2, because it is compatible | |
1209 | * with a stream of characters. If we find it, we bind to it. | |
1210 | * | |
1211 | * Note that the people from hpoj.sourceforge.net need to be able to | |
1212 | * bind to 7/1/3 (MLC/1284.4), so we provide them ioctls for this purpose. | |
1213 | * | |
1214 | * Failing 7/1/2, we look for 7/1/3, even though it's probably not | |
1215 | * stream-compatible, because this matches the behaviour of the old code. | |
1216 | * | |
1217 | * If nothing else, we bind to 7/1/1 - the unidirectional interface. | |
1218 | */ | |
1219 | static int usblp_select_alts(struct usblp *usblp) | |
1220 | { | |
1221 | struct usb_interface *if_alt; | |
1222 | struct usb_host_interface *ifd; | |
1223 | struct usb_endpoint_descriptor *epd, *epwrite, *epread; | |
1224 | int p, i, e; | |
1225 | ||
1226 | if_alt = usblp->intf; | |
1227 | ||
1228 | for (p = 0; p < USBLP_MAX_PROTOCOLS; p++) | |
1229 | usblp->protocol[p].alt_setting = -1; | |
1230 | ||
1231 | /* Find out what we have. */ | |
1232 | for (i = 0; i < if_alt->num_altsetting; i++) { | |
1233 | ifd = &if_alt->altsetting[i]; | |
1234 | ||
1235 | if (ifd->desc.bInterfaceClass != 7 || ifd->desc.bInterfaceSubClass != 1) | |
5ec71db5 AS |
1236 | if (!(usblp->quirks & USBLP_QUIRK_BAD_CLASS)) |
1237 | continue; | |
1da177e4 LT |
1238 | |
1239 | if (ifd->desc.bInterfaceProtocol < USBLP_FIRST_PROTOCOL || | |
1240 | ifd->desc.bInterfaceProtocol > USBLP_LAST_PROTOCOL) | |
1241 | continue; | |
1242 | ||
1243 | /* Look for bulk OUT and IN endpoints. */ | |
1244 | epwrite = epread = NULL; | |
1245 | for (e = 0; e < ifd->desc.bNumEndpoints; e++) { | |
1246 | epd = &ifd->endpoint[e].desc; | |
1247 | ||
5bc66d53 | 1248 | if (usb_endpoint_is_bulk_out(epd)) |
1da177e4 LT |
1249 | if (!epwrite) |
1250 | epwrite = epd; | |
1251 | ||
5bc66d53 | 1252 | if (usb_endpoint_is_bulk_in(epd)) |
1da177e4 LT |
1253 | if (!epread) |
1254 | epread = epd; | |
1da177e4 LT |
1255 | } |
1256 | ||
1257 | /* Ignore buggy hardware without the right endpoints. */ | |
1258 | if (!epwrite || (ifd->desc.bInterfaceProtocol > 1 && !epread)) | |
1259 | continue; | |
1260 | ||
1261 | /* Turn off reads for 7/1/1 (unidirectional) interfaces | |
1262 | * and buggy bidirectional printers. */ | |
1263 | if (ifd->desc.bInterfaceProtocol == 1) { | |
1264 | epread = NULL; | |
1265 | } else if (usblp->quirks & USBLP_QUIRK_BIDIR) { | |
317c67b8 PZ |
1266 | printk(KERN_INFO "usblp%d: Disabling reads from " |
1267 | "problematic bidirectional printer\n", | |
1268 | usblp->minor); | |
1da177e4 LT |
1269 | epread = NULL; |
1270 | } | |
1271 | ||
1272 | usblp->protocol[ifd->desc.bInterfaceProtocol].alt_setting = | |
1273 | ifd->desc.bAlternateSetting; | |
1274 | usblp->protocol[ifd->desc.bInterfaceProtocol].epwrite = epwrite; | |
1275 | usblp->protocol[ifd->desc.bInterfaceProtocol].epread = epread; | |
1276 | } | |
1277 | ||
1278 | /* If our requested protocol is supported, then use it. */ | |
1279 | if (proto_bias >= USBLP_FIRST_PROTOCOL && | |
1280 | proto_bias <= USBLP_LAST_PROTOCOL && | |
1281 | usblp->protocol[proto_bias].alt_setting != -1) | |
1282 | return proto_bias; | |
1283 | ||
1284 | /* Ordering is important here. */ | |
1285 | if (usblp->protocol[2].alt_setting != -1) | |
1286 | return 2; | |
1287 | if (usblp->protocol[1].alt_setting != -1) | |
1288 | return 1; | |
1289 | if (usblp->protocol[3].alt_setting != -1) | |
1290 | return 3; | |
1291 | ||
1292 | /* If nothing is available, then don't bind to this device. */ | |
1293 | return -1; | |
1294 | } | |
1295 | ||
1296 | static int usblp_set_protocol(struct usblp *usblp, int protocol) | |
1297 | { | |
1298 | int r, alts; | |
1299 | ||
1300 | if (protocol < USBLP_FIRST_PROTOCOL || protocol > USBLP_LAST_PROTOCOL) | |
1301 | return -EINVAL; | |
1302 | ||
1303 | alts = usblp->protocol[protocol].alt_setting; | |
1304 | if (alts < 0) | |
1305 | return -EINVAL; | |
1306 | r = usb_set_interface(usblp->dev, usblp->ifnum, alts); | |
1307 | if (r < 0) { | |
317c67b8 | 1308 | printk(KERN_ERR "usblp: can't set desired altsetting %d on interface %d\n", |
1da177e4 LT |
1309 | alts, usblp->ifnum); |
1310 | return r; | |
1311 | } | |
1312 | ||
1da177e4 | 1313 | usblp->bidir = (usblp->protocol[protocol].epread != NULL); |
1da177e4 | 1314 | usblp->current_protocol = protocol; |
4f306309 GKH |
1315 | dev_dbg(&usblp->intf->dev, "usblp%d set protocol %d\n", |
1316 | usblp->minor, protocol); | |
1da177e4 LT |
1317 | return 0; |
1318 | } | |
1319 | ||
1320 | /* Retrieves and caches device ID string. | |
1321 | * Returns length, including length bytes but not null terminator. | |
1322 | * On error, returns a negative errno value. */ | |
1323 | static int usblp_cache_device_id_string(struct usblp *usblp) | |
1324 | { | |
1325 | int err, length; | |
1326 | ||
1327 | err = usblp_get_id(usblp, 0, usblp->device_id_string, USBLP_DEVICE_ID_SIZE - 1); | |
1328 | if (err < 0) { | |
4f306309 GKH |
1329 | dev_dbg(&usblp->intf->dev, |
1330 | "usblp%d: error = %d reading IEEE-1284 Device ID string\n", | |
1da177e4 LT |
1331 | usblp->minor, err); |
1332 | usblp->device_id_string[0] = usblp->device_id_string[1] = '\0'; | |
1333 | return -EIO; | |
1334 | } | |
1335 | ||
1336 | /* First two bytes are length in big-endian. | |
1337 | * They count themselves, and we copy them into | |
1338 | * the user's buffer. */ | |
1339 | length = be16_to_cpu(*((__be16 *)usblp->device_id_string)); | |
1340 | if (length < 2) | |
1341 | length = 2; | |
1342 | else if (length >= USBLP_DEVICE_ID_SIZE) | |
1343 | length = USBLP_DEVICE_ID_SIZE - 1; | |
1344 | usblp->device_id_string[length] = '\0'; | |
1345 | ||
4f306309 | 1346 | dev_dbg(&usblp->intf->dev, "usblp%d Device ID string [len=%d]=\"%s\"\n", |
1da177e4 LT |
1347 | usblp->minor, length, &usblp->device_id_string[2]); |
1348 | ||
1349 | return length; | |
1350 | } | |
1351 | ||
1352 | static void usblp_disconnect(struct usb_interface *intf) | |
1353 | { | |
916de027 | 1354 | struct usblp *usblp = usb_get_intfdata(intf); |
1da177e4 LT |
1355 | |
1356 | usb_deregister_dev(intf, &usblp_class); | |
1357 | ||
1358 | if (!usblp || !usblp->dev) { | |
9908a32e | 1359 | dev_err(&intf->dev, "bogus disconnect\n"); |
916de027 | 1360 | BUG(); |
1da177e4 LT |
1361 | } |
1362 | ||
a9714c84 DW |
1363 | device_remove_file(&intf->dev, &dev_attr_ieee1284_id); |
1364 | ||
916de027 NK |
1365 | mutex_lock(&usblp_mutex); |
1366 | mutex_lock(&usblp->mut); | |
1da177e4 | 1367 | usblp->present = 0; |
317c67b8 PZ |
1368 | wake_up(&usblp->wwait); |
1369 | wake_up(&usblp->rwait); | |
916de027 | 1370 | usb_set_intfdata(intf, NULL); |
1da177e4 LT |
1371 | |
1372 | usblp_unlink_urbs(usblp); | |
916de027 | 1373 | mutex_unlock(&usblp->mut); |
1da177e4 LT |
1374 | |
1375 | if (!usblp->used) | |
916de027 NK |
1376 | usblp_cleanup(usblp); |
1377 | mutex_unlock(&usblp_mutex); | |
1da177e4 LT |
1378 | } |
1379 | ||
3a90f818 | 1380 | static int usblp_suspend(struct usb_interface *intf, pm_message_t message) |
516077c1 | 1381 | { |
916de027 | 1382 | struct usblp *usblp = usb_get_intfdata(intf); |
516077c1 | 1383 | |
516077c1 | 1384 | usblp_unlink_urbs(usblp); |
317c67b8 PZ |
1385 | #if 0 /* XXX Do we want this? What if someone is reading, should we fail? */ |
1386 | /* not strictly necessary, but just in case */ | |
1387 | wake_up(&usblp->wwait); | |
1388 | wake_up(&usblp->rwait); | |
1389 | #endif | |
516077c1 ON |
1390 | |
1391 | return 0; | |
1392 | } | |
1393 | ||
3a90f818 | 1394 | static int usblp_resume(struct usb_interface *intf) |
516077c1 | 1395 | { |
916de027 | 1396 | struct usblp *usblp = usb_get_intfdata(intf); |
516077c1 ON |
1397 | int r; |
1398 | ||
916de027 | 1399 | r = handle_bidir(usblp); |
516077c1 | 1400 | |
516077c1 ON |
1401 | return r; |
1402 | } | |
1403 | ||
6ef4852b | 1404 | static const struct usb_device_id usblp_ids[] = { |
1da177e4 LT |
1405 | { USB_DEVICE_INFO(7, 1, 1) }, |
1406 | { USB_DEVICE_INFO(7, 1, 2) }, | |
1407 | { USB_DEVICE_INFO(7, 1, 3) }, | |
1408 | { USB_INTERFACE_INFO(7, 1, 1) }, | |
1409 | { USB_INTERFACE_INFO(7, 1, 2) }, | |
1410 | { USB_INTERFACE_INFO(7, 1, 3) }, | |
5ec71db5 | 1411 | { USB_DEVICE(0x04b8, 0x0202) }, /* Seiko Epson Receipt Printer M129C */ |
1da177e4 LT |
1412 | { } /* Terminating entry */ |
1413 | }; | |
1414 | ||
916de027 | 1415 | MODULE_DEVICE_TABLE(usb, usblp_ids); |
1da177e4 LT |
1416 | |
1417 | static struct usb_driver usblp_driver = { | |
1da177e4 LT |
1418 | .name = "usblp", |
1419 | .probe = usblp_probe, | |
1420 | .disconnect = usblp_disconnect, | |
516077c1 ON |
1421 | .suspend = usblp_suspend, |
1422 | .resume = usblp_resume, | |
1da177e4 | 1423 | .id_table = usblp_ids, |
d0532184 | 1424 | .supports_autosuspend = 1, |
1da177e4 LT |
1425 | }; |
1426 | ||
65db4305 | 1427 | module_usb_driver(usblp_driver); |
1da177e4 | 1428 | |
916de027 NK |
1429 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1430 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1431 | module_param(proto_bias, int, S_IRUGO | S_IWUSR); |
1432 | MODULE_PARM_DESC(proto_bias, "Favourite protocol number"); | |
1433 | MODULE_LICENSE("GPL"); |