diff options
author | Samuel Ortiz <samuel@sortiz.org> | 2006-05-25 19:19:22 -0400 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2006-06-18 00:26:18 -0400 |
commit | c6ae522e3a50fc1ec483d7f03ece9c7a25e6de95 (patch) | |
tree | 98a67649b473bfc64751458283aeb3bb47e76703 /drivers/net | |
parent | 15986e1aadbbf40a331cddd0470bb434d156431d (diff) |
[IRDA]: Initial support for MCS7780 based dongles
The MosChip MCS7780 chipset is an IrDA USB bridge that
doesn't conform with the IrDA-USB standard and thus needs
its separate driver.
Tested on an actual MCS7780 based dongle.
Original implementation by Brian Pugh <bpugh@cs.pdx.edu>
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/irda/Kconfig | 15 | ||||
-rw-r--r-- | drivers/net/irda/Makefile | 1 | ||||
-rw-r--r-- | drivers/net/irda/mcs7780.c | 1009 | ||||
-rw-r--r-- | drivers/net/irda/mcs7780.h | 167 |
4 files changed, 1192 insertions, 0 deletions
diff --git a/drivers/net/irda/Kconfig b/drivers/net/irda/Kconfig index cff8598aa800..d2ce4896abff 100644 --- a/drivers/net/irda/Kconfig +++ b/drivers/net/irda/Kconfig | |||
@@ -417,5 +417,20 @@ config PXA_FICP | |||
417 | available capabilities may vary from one PXA2xx target to | 417 | available capabilities may vary from one PXA2xx target to |
418 | another. | 418 | another. |
419 | 419 | ||
420 | config MCS_FIR | ||
421 | tristate "MosChip MCS7780 IrDA-USB dongle" | ||
422 | depends on IRDA && USB && EXPERIMENTAL | ||
423 | help | ||
424 | Say Y or M here if you want to build support for the MosChip | ||
425 | MCS7780 IrDA-USB bridge device driver. | ||
426 | |||
427 | USB bridge based on the MosChip MCS7780 don't conform to the | ||
428 | IrDA-USB device class specification, and therefore need their | ||
429 | own specific driver. Those dongles support SIR and FIR (4Mbps) | ||
430 | speeds. | ||
431 | |||
432 | To compile it as a module, choose M here: the module will be called | ||
433 | mcs7780. | ||
434 | |||
420 | endmenu | 435 | endmenu |
421 | 436 | ||
diff --git a/drivers/net/irda/Makefile b/drivers/net/irda/Makefile index c1ce2398efea..5be09f1b9ee2 100644 --- a/drivers/net/irda/Makefile +++ b/drivers/net/irda/Makefile | |||
@@ -19,6 +19,7 @@ obj-$(CONFIG_ALI_FIR) += ali-ircc.o | |||
19 | obj-$(CONFIG_VLSI_FIR) += vlsi_ir.o | 19 | obj-$(CONFIG_VLSI_FIR) += vlsi_ir.o |
20 | obj-$(CONFIG_VIA_FIR) += via-ircc.o | 20 | obj-$(CONFIG_VIA_FIR) += via-ircc.o |
21 | obj-$(CONFIG_PXA_FICP) += pxaficp_ir.o | 21 | obj-$(CONFIG_PXA_FICP) += pxaficp_ir.o |
22 | obj-$(CONFIG_MCS_FIR) += mcs7780.o | ||
22 | # Old dongle drivers for old SIR drivers | 23 | # Old dongle drivers for old SIR drivers |
23 | obj-$(CONFIG_ESI_DONGLE_OLD) += esi.o | 24 | obj-$(CONFIG_ESI_DONGLE_OLD) += esi.o |
24 | obj-$(CONFIG_TEKRAM_DONGLE_OLD) += tekram.o | 25 | obj-$(CONFIG_TEKRAM_DONGLE_OLD) += tekram.o |
diff --git a/drivers/net/irda/mcs7780.c b/drivers/net/irda/mcs7780.c new file mode 100644 index 000000000000..754297fc8f22 --- /dev/null +++ b/drivers/net/irda/mcs7780.c | |||
@@ -0,0 +1,1009 @@ | |||
1 | /***************************************************************************** | ||
2 | * | ||
3 | * Filename: mcs7780.c | ||
4 | * Version: 0.4-alpha | ||
5 | * Description: Irda MosChip USB Dongle Driver | ||
6 | * Authors: Lukasz Stelmach <stlman@poczta.fm> | ||
7 | * Brian Pugh <bpugh@cs.pdx.edu> | ||
8 | * Judy Fischbach <jfisch@cs.pdx.edu> | ||
9 | * | ||
10 | * Based on stir4200 driver, but some things done differently. | ||
11 | * Based on earlier driver by Paul Stewart <stewart@parc.com> | ||
12 | * | ||
13 | * Copyright (C) 2000, Roman Weissgaerber <weissg@vienna.at> | ||
14 | * Copyright (C) 2001, Dag Brattli <dag@brattli.net> | ||
15 | * Copyright (C) 2001, Jean Tourrilhes <jt@hpl.hp.com> | ||
16 | * Copyright (C) 2004, Stephen Hemminger <shemminger@osdl.org> | ||
17 | * Copyright (C) 2005, Lukasz Stelmach <stlman@poczta.fm> | ||
18 | * Copyright (C) 2005, Brian Pugh <bpugh@cs.pdx.edu> | ||
19 | * Copyright (C) 2005, Judy Fischbach <jfisch@cs.pdx.edu> | ||
20 | * | ||
21 | * This program is free software; you can redistribute it and/or modify | ||
22 | * it under the terms of the GNU General Public License as published by | ||
23 | * the Free Software Foundation; either version 2 of the License, or | ||
24 | * (at your option) any later version. | ||
25 | * | ||
26 | * This program is distributed in the hope that it will be useful, | ||
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
29 | * GNU General Public License for more details. | ||
30 | * | ||
31 | * You should have received a copy of the GNU General Public License | ||
32 | * along with this program; if not, write to the Free Software | ||
33 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
34 | * | ||
35 | *****************************************************************************/ | ||
36 | |||
37 | /* | ||
38 | * MCS7780 is a simple USB to IrDA bridge by MosChip. It is neither | ||
39 | * compatibile with irda-usb nor with stir4200. Although it is quite | ||
40 | * similar to the later as far as general idea of operation is concerned. | ||
41 | * That is it requires the software to do all the framing job at SIR speeds. | ||
42 | * The hardware does take care of the framing at MIR and FIR speeds. | ||
43 | * It supports all speeds from 2400 through 4Mbps | ||
44 | */ | ||
45 | |||
46 | #include <linux/module.h> | ||
47 | #include <linux/moduleparam.h> | ||
48 | #include <linux/config.h> | ||
49 | #include <linux/kernel.h> | ||
50 | #include <linux/types.h> | ||
51 | #include <linux/errno.h> | ||
52 | #include <linux/init.h> | ||
53 | #include <linux/slab.h> | ||
54 | #include <linux/module.h> | ||
55 | #include <linux/kref.h> | ||
56 | #include <linux/usb.h> | ||
57 | #include <linux/device.h> | ||
58 | #include <linux/crc32.h> | ||
59 | |||
60 | #include <asm/unaligned.h> | ||
61 | #include <asm/byteorder.h> | ||
62 | #include <asm/uaccess.h> | ||
63 | |||
64 | #include <net/irda/irda.h> | ||
65 | #include <net/irda/wrapper.h> | ||
66 | #include <net/irda/crc.h> | ||
67 | |||
68 | #include "mcs7780.h" | ||
69 | |||
70 | #define MCS_VENDOR_ID 0x9710 | ||
71 | #define MCS_PRODUCT_ID 0x7780 | ||
72 | |||
73 | static struct usb_device_id mcs_table[] = { | ||
74 | /* MosChip Corp., MCS7780 FIR-USB Adapter */ | ||
75 | {USB_DEVICE(MCS_VENDOR_ID, MCS_PRODUCT_ID)}, | ||
76 | {}, | ||
77 | }; | ||
78 | |||
79 | MODULE_AUTHOR("Brian Pugh <bpugh@cs.pdx.edu>"); | ||
80 | MODULE_DESCRIPTION("IrDA-USB Dongle Driver for MosChip MCS7780"); | ||
81 | MODULE_VERSION("0.3alpha"); | ||
82 | MODULE_LICENSE("GPL"); | ||
83 | |||
84 | MODULE_DEVICE_TABLE(usb, mcs_table); | ||
85 | |||
86 | static int qos_mtt_bits = 0x07 /* > 1ms */ ; | ||
87 | module_param(qos_mtt_bits, int, 0); | ||
88 | MODULE_PARM_DESC(qos_mtt_bits, "Minimum Turn Time"); | ||
89 | |||
90 | static int receive_mode = 0x1; | ||
91 | module_param(receive_mode, int, 0); | ||
92 | MODULE_PARM_DESC(receive_mode, | ||
93 | "Receive mode of the device (1:fast, 0:slow, default:1)"); | ||
94 | |||
95 | static int sir_tweak = 1; | ||
96 | module_param(sir_tweak, int, 0444); | ||
97 | MODULE_PARM_DESC(sir_tweak, | ||
98 | "Default pulse width (1:1.6us, 0:3/16 bit, default:1)."); | ||
99 | |||
100 | static int transceiver_type = MCS_TSC_VISHAY; | ||
101 | module_param(transceiver_type, int, 0444); | ||
102 | MODULE_PARM_DESC(transceiver_type, "IR transceiver type, see mcs7780.h."); | ||
103 | |||
104 | struct usb_driver mcs_driver = { | ||
105 | .name = "mcs7780", | ||
106 | .probe = mcs_probe, | ||
107 | .disconnect = mcs_disconnect, | ||
108 | .id_table = mcs_table, | ||
109 | }; | ||
110 | |||
111 | /* speed flag selection by direct addressing. | ||
112 | addr = (speed >> 8) & 0x0f | ||
113 | |||
114 | 0x1 57600 0x2 115200 0x4 1152000 0x5 9600 | ||
115 | 0x6 38400 0x9 2400 0xa 576000 0xb 19200 | ||
116 | |||
117 | 4Mbps (or 2400) must be checked separately. Since it also has | ||
118 | to be programmed in a different manner that is not a big problem. | ||
119 | */ | ||
120 | static __u16 mcs_speed_set[16] = { 0, | ||
121 | MCS_SPEED_57600, | ||
122 | MCS_SPEED_115200, | ||
123 | 0, | ||
124 | MCS_SPEED_1152000, | ||
125 | MCS_SPEED_9600, | ||
126 | MCS_SPEED_38400, | ||
127 | 0, 0, | ||
128 | MCS_SPEED_2400, | ||
129 | MCS_SPEED_576000, | ||
130 | MCS_SPEED_19200, | ||
131 | 0, 0, 0, | ||
132 | }; | ||
133 | |||
134 | /* Set given 16 bit register with a 16 bit value. Send control message | ||
135 | * to set dongle register. */ | ||
136 | static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val) | ||
137 | { | ||
138 | struct usb_device *dev = mcs->usbdev; | ||
139 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | ||
140 | MCS_WR_RTYPE, val, reg, NULL, 0, | ||
141 | msecs_to_jiffies(MCS_CTRL_TIMEOUT)); | ||
142 | } | ||
143 | |||
144 | /* Get 16 bit register value. Send contol message to read dongle register. */ | ||
145 | static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val) | ||
146 | { | ||
147 | struct usb_device *dev = mcs->usbdev; | ||
148 | int ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | ||
149 | MCS_RD_RTYPE, 0, reg, val, 2, | ||
150 | msecs_to_jiffies(MCS_CTRL_TIMEOUT)); | ||
151 | |||
152 | return ret; | ||
153 | } | ||
154 | |||
155 | /* Setup a communication between mcs7780 and TFDU chips. It is described | ||
156 | * in more detail in the data sheet. The setup sequence puts the the | ||
157 | * vishay tranceiver into high speed mode. It will also receive SIR speed | ||
158 | * packets but at reduced sensitivity. | ||
159 | */ | ||
160 | |||
161 | /* 0: OK 1:ERROR */ | ||
162 | static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs) | ||
163 | { | ||
164 | int ret = 0; | ||
165 | __u16 rval; | ||
166 | |||
167 | /* mcs_get_reg should read exactly two bytes from the dongle */ | ||
168 | ret = mcs_get_reg(mcs, MCS_XCVR_REG, &rval); | ||
169 | if (unlikely(ret != 2)) { | ||
170 | ret = -EIO; | ||
171 | goto error; | ||
172 | } | ||
173 | |||
174 | /* The MCS_XCVR_CONF bit puts the transceiver into configuration | ||
175 | * mode. The MCS_MODE0 bit must start out high (1) and then | ||
176 | * transition to low and the MCS_STFIR and MCS_MODE1 bits must | ||
177 | * be low. | ||
178 | */ | ||
179 | rval |= (MCS_MODE0 | MCS_XCVR_CONF); | ||
180 | rval &= ~MCS_STFIR; | ||
181 | rval &= ~MCS_MODE1; | ||
182 | ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval); | ||
183 | if (unlikely(ret)) | ||
184 | goto error; | ||
185 | |||
186 | rval &= ~MCS_MODE0; | ||
187 | ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval); | ||
188 | if (unlikely(ret)) | ||
189 | goto error; | ||
190 | |||
191 | rval &= ~MCS_XCVR_CONF; | ||
192 | ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval); | ||
193 | if (unlikely(ret)) | ||
194 | goto error; | ||
195 | |||
196 | ret = 0; | ||
197 | error: | ||
198 | return ret; | ||
199 | } | ||
200 | |||
201 | /* Setup a communication between mcs7780 and agilent chip. */ | ||
202 | static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs) | ||
203 | { | ||
204 | IRDA_WARNING("This transceiver type is not supported yet."); | ||
205 | return 1; | ||
206 | } | ||
207 | |||
208 | /* Setup a communication between mcs7780 and sharp chip. */ | ||
209 | static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs) | ||
210 | { | ||
211 | IRDA_WARNING("This transceiver type is not supported yet."); | ||
212 | return 1; | ||
213 | } | ||
214 | |||
215 | /* Common setup for all transceivers */ | ||
216 | static inline int mcs_setup_transceiver(struct mcs_cb *mcs) | ||
217 | { | ||
218 | int ret = 0; | ||
219 | __u16 rval; | ||
220 | char *msg; | ||
221 | |||
222 | msg = "Basic transceiver setup error."; | ||
223 | |||
224 | /* read value of MODE Register, set the DRIVER and RESET bits | ||
225 | * and write value back out to MODE Register | ||
226 | */ | ||
227 | ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval); | ||
228 | if(unlikely(ret != 2)) | ||
229 | goto error; | ||
230 | rval |= MCS_DRIVER; /* put the mcs7780 into configuration mode. */ | ||
231 | ret = mcs_set_reg(mcs, MCS_MODE_REG, rval); | ||
232 | if(unlikely(ret)) | ||
233 | goto error; | ||
234 | |||
235 | rval = 0; /* set min pulse width to 0 initially. */ | ||
236 | ret = mcs_set_reg(mcs, MCS_MINRXPW_REG, rval); | ||
237 | if(unlikely(ret)) | ||
238 | goto error; | ||
239 | |||
240 | ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval); | ||
241 | if(unlikely(ret != 2)) | ||
242 | goto error; | ||
243 | |||
244 | rval &= ~MCS_FIR; /* turn off fir mode. */ | ||
245 | if(mcs->sir_tweak) | ||
246 | rval |= MCS_SIR16US; /* 1.6us pulse width */ | ||
247 | else | ||
248 | rval &= ~MCS_SIR16US; /* 3/16 bit time pulse width */ | ||
249 | |||
250 | /* make sure ask mode and back to back packets are off. */ | ||
251 | rval &= ~(MCS_BBTG | MCS_ASK); | ||
252 | |||
253 | rval &= ~MCS_SPEED_MASK; | ||
254 | rval |= MCS_SPEED_9600; /* make sure initial speed is 9600. */ | ||
255 | mcs->speed = 9600; | ||
256 | mcs->new_speed = 0; /* new_speed is set to 0 */ | ||
257 | rval &= ~MCS_PLLPWDN; /* disable power down. */ | ||
258 | |||
259 | /* make sure device determines direction and that the auto send sip | ||
260 | * pulse are on. | ||
261 | */ | ||
262 | rval |= MCS_DTD | MCS_SIPEN; | ||
263 | |||
264 | ret = mcs_set_reg(mcs, MCS_MODE_REG, rval); | ||
265 | if(unlikely(ret)) | ||
266 | goto error; | ||
267 | |||
268 | msg = "transceiver model specific setup error."; | ||
269 | switch (mcs->transceiver_type) { | ||
270 | case MCS_TSC_VISHAY: | ||
271 | ret = mcs_setup_transceiver_vishay(mcs); | ||
272 | break; | ||
273 | |||
274 | case MCS_TSC_SHARP: | ||
275 | ret = mcs_setup_transceiver_sharp(mcs); | ||
276 | break; | ||
277 | |||
278 | case MCS_TSC_AGILENT: | ||
279 | ret = mcs_setup_transceiver_agilent(mcs); | ||
280 | break; | ||
281 | |||
282 | default: | ||
283 | IRDA_WARNING("Unknown transceiver type: %d", | ||
284 | mcs->transceiver_type); | ||
285 | ret = 1; | ||
286 | } | ||
287 | if (unlikely(ret)) | ||
288 | goto error; | ||
289 | |||
290 | /* If transceiver is not SHARP, then if receive mode set | ||
291 | * on the RXFAST bit in the XCVR Register otherwise unset it | ||
292 | */ | ||
293 | if (mcs->transceiver_type != MCS_TSC_SHARP) { | ||
294 | |||
295 | ret = mcs_get_reg(mcs, MCS_XCVR_REG, &rval); | ||
296 | if (unlikely(ret != 2)) | ||
297 | goto error; | ||
298 | if (mcs->receive_mode) | ||
299 | rval |= MCS_RXFAST; | ||
300 | else | ||
301 | rval &= ~MCS_RXFAST; | ||
302 | ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval); | ||
303 | if (unlikely(ret)) | ||
304 | goto error; | ||
305 | } | ||
306 | |||
307 | msg = "transceiver reset."; | ||
308 | |||
309 | ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval); | ||
310 | if (unlikely(ret != 2)) | ||
311 | goto error; | ||
312 | |||
313 | /* reset the mcs7780 so all changes take effect. */ | ||
314 | rval &= ~MCS_RESET; | ||
315 | ret = mcs_set_reg(mcs, MCS_MODE_REG, rval); | ||
316 | if (unlikely(ret)) | ||
317 | goto error; | ||
318 | else | ||
319 | return ret; | ||
320 | |||
321 | error: | ||
322 | IRDA_ERROR("%s", msg); | ||
323 | return ret; | ||
324 | } | ||
325 | |||
326 | /* Wraps the data in format for SIR */ | ||
327 | static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf) | ||
328 | { | ||
329 | int wraplen; | ||
330 | |||
331 | /* 2: full frame length, including "the length" */ | ||
332 | wraplen = async_wrap_skb(skb, buf + 2, 4094); | ||
333 | |||
334 | wraplen += 2; | ||
335 | buf[0] = wraplen & 0xff; | ||
336 | buf[1] = (wraplen >> 8) & 0xff; | ||
337 | |||
338 | return wraplen; | ||
339 | } | ||
340 | |||
341 | /* Wraps the data in format for FIR */ | ||
342 | static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf) | ||
343 | { | ||
344 | unsigned int len = 0; | ||
345 | __u32 fcs = ~(crc32_le(~0, skb->data, skb->len)); | ||
346 | |||
347 | /* add 2 bytes for length value and 4 bytes for fcs. */ | ||
348 | len = skb->len + 6; | ||
349 | |||
350 | /* The mcs7780 requires that the first two bytes are the packet | ||
351 | * length in little endian order. Note: the length value includes | ||
352 | * the two bytes for the length value itself. | ||
353 | */ | ||
354 | buf[0] = len & 0xff; | ||
355 | buf[1] = (len >> 8) & 0xff; | ||
356 | /* copy the data into the tx buffer. */ | ||
357 | memcpy(buf+2, skb->data, skb->len); | ||
358 | /* put the fcs in the last four bytes in little endian order. */ | ||
359 | buf[len - 4] = fcs & 0xff; | ||
360 | buf[len - 3] = (fcs >> 8) & 0xff; | ||
361 | buf[len - 2] = (fcs >> 16) & 0xff; | ||
362 | buf[len - 1] = (fcs >> 24) & 0xff; | ||
363 | |||
364 | return len; | ||
365 | } | ||
366 | |||
367 | /* Wraps the data in format for MIR */ | ||
368 | static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf) | ||
369 | { | ||
370 | __u16 fcs = 0; | ||
371 | int len = skb->len + 4; | ||
372 | |||
373 | fcs = ~(irda_calc_crc16(~fcs, skb->data, skb->len)); | ||
374 | /* put the total packet length in first. Note: packet length | ||
375 | * value includes the two bytes that hold the packet length | ||
376 | * itself. | ||
377 | */ | ||
378 | buf[0] = len & 0xff; | ||
379 | buf[1] = (len >> 8) & 0xff; | ||
380 | /* copy the data */ | ||
381 | memcpy(buf+2, skb->data, skb->len); | ||
382 | /* put the fcs in last two bytes in little endian order. */ | ||
383 | buf[len - 2] = fcs & 0xff; | ||
384 | buf[len - 1] = (fcs >> 8) & 0xff; | ||
385 | |||
386 | return len; | ||
387 | } | ||
388 | |||
389 | /* Unwrap received packets at MIR speed. A 16 bit crc_ccitt checksum is | ||
390 | * used for the fcs. When performed over the entire packet the result | ||
391 | * should be GOOD_FCS = 0xf0b8. Hands the unwrapped data off to the IrDA | ||
392 | * layer via a sk_buff. | ||
393 | */ | ||
394 | static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len) | ||
395 | { | ||
396 | __u16 fcs; | ||
397 | int new_len; | ||
398 | struct sk_buff *skb; | ||
399 | |||
400 | /* Assume that the frames are going to fill a single packet | ||
401 | * rather than span multiple packets. | ||
402 | */ | ||
403 | |||
404 | new_len = len - 2; | ||
405 | if(unlikely(new_len <= 0)) { | ||
406 | IRDA_ERROR("%s short frame length %d\n", | ||
407 | mcs->netdev->name, new_len); | ||
408 | ++mcs->stats.rx_errors; | ||
409 | ++mcs->stats.rx_length_errors; | ||
410 | return; | ||
411 | } | ||
412 | fcs = 0; | ||
413 | fcs = irda_calc_crc16(~fcs, buf, len); | ||
414 | |||
415 | if(fcs != GOOD_FCS) { | ||
416 | IRDA_ERROR("crc error calc 0x%x len %d\n", | ||
417 | fcs, new_len); | ||
418 | mcs->stats.rx_errors++; | ||
419 | mcs->stats.rx_crc_errors++; | ||
420 | return; | ||
421 | } | ||
422 | |||
423 | skb = dev_alloc_skb(new_len + 1); | ||
424 | if(unlikely(!skb)) { | ||
425 | ++mcs->stats.rx_dropped; | ||
426 | return; | ||
427 | } | ||
428 | |||
429 | skb_reserve(skb, 1); | ||
430 | memcpy(skb->data, buf, new_len); | ||
431 | skb_put(skb, new_len); | ||
432 | skb->mac.raw = skb->data; | ||
433 | skb->protocol = htons(ETH_P_IRDA); | ||
434 | skb->dev = mcs->netdev; | ||
435 | |||
436 | netif_rx(skb); | ||
437 | |||
438 | mcs->stats.rx_packets++; | ||
439 | mcs->stats.rx_bytes += new_len; | ||
440 | |||
441 | return; | ||
442 | } | ||
443 | |||
444 | /* Unwrap received packets at FIR speed. A 32 bit crc_ccitt checksum is | ||
445 | * used for the fcs. Hands the unwrapped data off to the IrDA | ||
446 | * layer via a sk_buff. | ||
447 | */ | ||
448 | static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len) | ||
449 | { | ||
450 | __u32 fcs; | ||
451 | int new_len; | ||
452 | struct sk_buff *skb; | ||
453 | |||
454 | /* Assume that the frames are going to fill a single packet | ||
455 | * rather than span multiple packets. This is most likely a false | ||
456 | * assumption. | ||
457 | */ | ||
458 | |||
459 | new_len = len - 4; | ||
460 | if(unlikely(new_len <= 0)) { | ||
461 | IRDA_ERROR("%s short frame length %d\n", | ||
462 | mcs->netdev->name, new_len); | ||
463 | ++mcs->stats.rx_errors; | ||
464 | ++mcs->stats.rx_length_errors; | ||
465 | return; | ||
466 | } | ||
467 | |||
468 | fcs = ~(crc32_le(~0, buf, new_len)); | ||
469 | if(fcs != le32_to_cpu(get_unaligned((u32 *)(buf+new_len)))) { | ||
470 | IRDA_ERROR("crc error calc 0x%x len %d\n", fcs, new_len); | ||
471 | mcs->stats.rx_errors++; | ||
472 | mcs->stats.rx_crc_errors++; | ||
473 | return; | ||
474 | } | ||
475 | |||
476 | skb = dev_alloc_skb(new_len + 1); | ||
477 | if(unlikely(!skb)) { | ||
478 | ++mcs->stats.rx_dropped; | ||
479 | return; | ||
480 | } | ||
481 | |||
482 | skb_reserve(skb, 1); | ||
483 | memcpy(skb->data, buf, new_len); | ||
484 | skb_put(skb, new_len); | ||
485 | skb->mac.raw = skb->data; | ||
486 | skb->protocol = htons(ETH_P_IRDA); | ||
487 | skb->dev = mcs->netdev; | ||
488 | |||
489 | netif_rx(skb); | ||
490 | |||
491 | mcs->stats.rx_packets++; | ||
492 | mcs->stats.rx_bytes += new_len; | ||
493 | |||
494 | return; | ||
495 | } | ||
496 | |||
497 | |||
498 | /* Allocates urbs for both receive and transmit. | ||
499 | * If alloc fails return error code 0 (fail) otherwise | ||
500 | * return error code 1 (success). | ||
501 | */ | ||
502 | static inline int mcs_setup_urbs(struct mcs_cb *mcs) | ||
503 | { | ||
504 | mcs->rx_urb = NULL; | ||
505 | |||
506 | mcs->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
507 | if (!mcs->tx_urb) | ||
508 | return 0; | ||
509 | |||
510 | mcs->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
511 | if (!mcs->rx_urb) | ||
512 | return 0; | ||
513 | |||
514 | return 1; | ||
515 | } | ||
516 | |||
517 | /* Sets up state to be initially outside frame, gets receive urb, | ||
518 | * sets status to successful and then submits the urb to start | ||
519 | * receiving the data. | ||
520 | */ | ||
521 | static inline int mcs_receive_start(struct mcs_cb *mcs) | ||
522 | { | ||
523 | mcs->rx_buff.in_frame = FALSE; | ||
524 | mcs->rx_buff.state = OUTSIDE_FRAME; | ||
525 | |||
526 | usb_fill_bulk_urb(mcs->rx_urb, mcs->usbdev, | ||
527 | usb_rcvbulkpipe(mcs->usbdev, mcs->ep_in), | ||
528 | mcs->in_buf, 4096, mcs_receive_irq, mcs); | ||
529 | |||
530 | mcs->rx_urb->status = 0; | ||
531 | return usb_submit_urb(mcs->rx_urb, GFP_KERNEL); | ||
532 | } | ||
533 | |||
534 | /* Finds the in and out endpoints for the mcs control block */ | ||
535 | static inline int mcs_find_endpoints(struct mcs_cb *mcs, | ||
536 | struct usb_host_endpoint *ep, int epnum) | ||
537 | { | ||
538 | int i; | ||
539 | int ret = 0; | ||
540 | |||
541 | /* If no place to store the endpoints just return */ | ||
542 | if (!ep) | ||
543 | return ret; | ||
544 | |||
545 | /* cycle through all endpoints, find the first two that are DIR_IN */ | ||
546 | for (i = 0; i < epnum; i++) { | ||
547 | if (ep[i].desc.bEndpointAddress & USB_DIR_IN) | ||
548 | mcs->ep_in = ep[i].desc.bEndpointAddress; | ||
549 | else | ||
550 | mcs->ep_out = ep[i].desc.bEndpointAddress; | ||
551 | |||
552 | /* MosChip says that the chip has only two bulk | ||
553 | * endpoints. Find one for each direction and move on. | ||
554 | */ | ||
555 | if ((mcs->ep_in != 0) && (mcs->ep_out != 0)) { | ||
556 | ret = 1; | ||
557 | break; | ||
558 | } | ||
559 | } | ||
560 | |||
561 | return ret; | ||
562 | } | ||
563 | |||
564 | static void mcs_speed_work(void *arg) | ||
565 | { | ||
566 | struct mcs_cb *mcs = arg; | ||
567 | struct net_device *netdev = mcs->netdev; | ||
568 | |||
569 | mcs_speed_change(mcs); | ||
570 | netif_wake_queue(netdev); | ||
571 | } | ||
572 | |||
573 | /* Function to change the speed of the mcs7780. Fully supports SIR, | ||
574 | * MIR, and FIR speeds. | ||
575 | */ | ||
576 | static int mcs_speed_change(struct mcs_cb *mcs) | ||
577 | { | ||
578 | int ret = 0; | ||
579 | int rst = 0; | ||
580 | int cnt = 0; | ||
581 | __u16 nspeed; | ||
582 | __u16 rval; | ||
583 | |||
584 | nspeed = mcs_speed_set[(mcs->new_speed >> 8) & 0x0f]; | ||
585 | |||
586 | do { | ||
587 | mcs_get_reg(mcs, MCS_RESV_REG, &rval); | ||
588 | } while(cnt++ < 100 && (rval & MCS_IRINTX)); | ||
589 | |||
590 | if(cnt >= 100) { | ||
591 | IRDA_ERROR("unable to change speed"); | ||
592 | ret = -EIO; | ||
593 | goto error; | ||
594 | } | ||
595 | |||
596 | mcs_get_reg(mcs, MCS_MODE_REG, &rval); | ||
597 | |||
598 | /* MINRXPW values recomended by MosChip */ | ||
599 | if (mcs->new_speed <= 115200) { | ||
600 | rval &= ~MCS_FIR; | ||
601 | |||
602 | if ((rst = (mcs->speed > 115200))) | ||
603 | mcs_set_reg(mcs, MCS_MINRXPW_REG, 0); | ||
604 | |||
605 | } else if (mcs->new_speed <= 1152000) { | ||
606 | rval &= ~MCS_FIR; | ||
607 | |||
608 | if ((rst = !(mcs->speed == 576000 || mcs->speed == 1152000))) | ||
609 | mcs_set_reg(mcs, MCS_MINRXPW_REG, 5); | ||
610 | |||
611 | } else { | ||
612 | rval |= MCS_FIR; | ||
613 | |||
614 | if ((rst = (mcs->speed != 4000000))) | ||
615 | mcs_set_reg(mcs, MCS_MINRXPW_REG, 5); | ||
616 | |||
617 | } | ||
618 | |||
619 | rval &= ~MCS_SPEED_MASK; | ||
620 | rval |= nspeed; | ||
621 | |||
622 | ret = mcs_set_reg(mcs, MCS_MODE_REG, rval); | ||
623 | if (unlikely(ret)) | ||
624 | goto error; | ||
625 | |||
626 | if (rst) | ||
627 | switch (mcs->transceiver_type) { | ||
628 | case MCS_TSC_VISHAY: | ||
629 | ret = mcs_setup_transceiver_vishay(mcs); | ||
630 | break; | ||
631 | |||
632 | case MCS_TSC_SHARP: | ||
633 | ret = mcs_setup_transceiver_sharp(mcs); | ||
634 | break; | ||
635 | |||
636 | case MCS_TSC_AGILENT: | ||
637 | ret = mcs_setup_transceiver_agilent(mcs); | ||
638 | break; | ||
639 | |||
640 | default: | ||
641 | ret = 1; | ||
642 | IRDA_WARNING("Unknown transceiver type: %d", | ||
643 | mcs->transceiver_type); | ||
644 | } | ||
645 | if (unlikely(ret)) | ||
646 | goto error; | ||
647 | |||
648 | mcs_get_reg(mcs, MCS_MODE_REG, &rval); | ||
649 | rval &= ~MCS_RESET; | ||
650 | ret = mcs_set_reg(mcs, MCS_MODE_REG, rval); | ||
651 | |||
652 | mcs->speed = mcs->new_speed; | ||
653 | error: | ||
654 | mcs->new_speed = 0; | ||
655 | return ret; | ||
656 | } | ||
657 | |||
658 | /* Ioctl calls not supported at this time. Can be an area of future work. */ | ||
659 | static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | ||
660 | { | ||
661 | /* struct if_irda_req *irq = (struct if_irda_req *)rq; */ | ||
662 | /* struct mcs_cb *mcs = netdev_priv(netdev); */ | ||
663 | int ret = 0; | ||
664 | |||
665 | switch (cmd) { | ||
666 | default: | ||
667 | ret = -EOPNOTSUPP; | ||
668 | } | ||
669 | |||
670 | return ret; | ||
671 | } | ||
672 | |||
673 | /* Network device is taken down, done by "ifconfig irda0 down" */ | ||
674 | static int mcs_net_close(struct net_device *netdev) | ||
675 | { | ||
676 | int ret = 0; | ||
677 | struct mcs_cb *mcs = netdev_priv(netdev); | ||
678 | |||
679 | /* Stop transmit processing */ | ||
680 | netif_stop_queue(netdev); | ||
681 | |||
682 | /* kill and free the receive and transmit URBs */ | ||
683 | usb_kill_urb(mcs->rx_urb); | ||
684 | usb_free_urb(mcs->rx_urb); | ||
685 | usb_kill_urb(mcs->tx_urb); | ||
686 | usb_free_urb(mcs->tx_urb); | ||
687 | |||
688 | /* Stop and remove instance of IrLAP */ | ||
689 | if (mcs->irlap) | ||
690 | irlap_close(mcs->irlap); | ||
691 | |||
692 | mcs->irlap = NULL; | ||
693 | return ret; | ||
694 | } | ||
695 | |||
696 | /* Network device is taken up, done by "ifconfig irda0 up" */ | ||
697 | static int mcs_net_open(struct net_device *netdev) | ||
698 | { | ||
699 | struct mcs_cb *mcs = netdev_priv(netdev); | ||
700 | char hwname[16]; | ||
701 | int ret = 0; | ||
702 | |||
703 | ret = usb_clear_halt(mcs->usbdev, | ||
704 | usb_sndbulkpipe(mcs->usbdev, mcs->ep_in)); | ||
705 | if (ret) | ||
706 | goto error1; | ||
707 | ret = usb_clear_halt(mcs->usbdev, | ||
708 | usb_rcvbulkpipe(mcs->usbdev, mcs->ep_out)); | ||
709 | if (ret) | ||
710 | goto error1; | ||
711 | |||
712 | ret = mcs_setup_transceiver(mcs); | ||
713 | if (ret) | ||
714 | goto error1; | ||
715 | |||
716 | ret = -ENOMEM; | ||
717 | |||
718 | /* Initialize for SIR/FIR to copy data directly into skb. */ | ||
719 | mcs->receiving = 0; | ||
720 | mcs->rx_buff.truesize = IRDA_SKB_MAX_MTU; | ||
721 | mcs->rx_buff.skb = dev_alloc_skb(IRDA_SKB_MAX_MTU); | ||
722 | if (!mcs->rx_buff.skb) | ||
723 | goto error1; | ||
724 | |||
725 | skb_reserve(mcs->rx_buff.skb, 1); | ||
726 | mcs->rx_buff.head = mcs->rx_buff.skb->data; | ||
727 | do_gettimeofday(&mcs->rx_time); | ||
728 | |||
729 | /* | ||
730 | * Now that everything should be initialized properly, | ||
731 | * Open new IrLAP layer instance to take care of us... | ||
732 | * Note : will send immediately a speed change... | ||
733 | */ | ||
734 | sprintf(hwname, "usb#%d", mcs->usbdev->devnum); | ||
735 | mcs->irlap = irlap_open(netdev, &mcs->qos, hwname); | ||
736 | if (!mcs->irlap) { | ||
737 | IRDA_ERROR("mcs7780: irlap_open failed"); | ||
738 | goto error2; | ||
739 | } | ||
740 | |||
741 | if (!mcs_setup_urbs(mcs)) | ||
742 | goto error3; | ||
743 | |||
744 | ret = mcs_receive_start(mcs); | ||
745 | if (ret) | ||
746 | goto error3; | ||
747 | |||
748 | netif_start_queue(netdev); | ||
749 | return 0; | ||
750 | |||
751 | error3: | ||
752 | irlap_close(mcs->irlap); | ||
753 | error2: | ||
754 | kfree_skb(mcs->rx_buff.skb); | ||
755 | error1: | ||
756 | return ret; | ||
757 | } | ||
758 | |||
759 | |||
760 | /* Get device stats for /proc/net/dev and ifconfig */ | ||
761 | static struct net_device_stats *mcs_net_get_stats(struct net_device *netdev) | ||
762 | { | ||
763 | struct mcs_cb *mcs = netdev_priv(netdev); | ||
764 | return &mcs->stats; | ||
765 | } | ||
766 | |||
767 | /* Receive callback function. */ | ||
768 | static void mcs_receive_irq(struct urb *urb, struct pt_regs *regs) | ||
769 | { | ||
770 | __u8 *bytes; | ||
771 | struct mcs_cb *mcs = urb->context; | ||
772 | int i; | ||
773 | int ret; | ||
774 | |||
775 | if (!netif_running(mcs->netdev)) | ||
776 | return; | ||
777 | |||
778 | if (urb->status) | ||
779 | return; | ||
780 | |||
781 | if (urb->actual_length > 0) { | ||
782 | bytes = urb->transfer_buffer; | ||
783 | |||
784 | /* MCS returns frames without BOF and EOF | ||
785 | * I assume it returns whole frames. | ||
786 | */ | ||
787 | /* SIR speed */ | ||
788 | if(mcs->speed < 576000) { | ||
789 | async_unwrap_char(mcs->netdev, &mcs->stats, | ||
790 | &mcs->rx_buff, 0xc0); | ||
791 | |||
792 | for (i = 0; i < urb->actual_length; i++) | ||
793 | async_unwrap_char(mcs->netdev, &mcs->stats, | ||
794 | &mcs->rx_buff, bytes[i]); | ||
795 | |||
796 | async_unwrap_char(mcs->netdev, &mcs->stats, | ||
797 | &mcs->rx_buff, 0xc1); | ||
798 | } | ||
799 | /* MIR speed */ | ||
800 | else if(mcs->speed == 576000 || mcs->speed == 1152000) { | ||
801 | mcs_unwrap_mir(mcs, urb->transfer_buffer, | ||
802 | urb->actual_length); | ||
803 | } | ||
804 | /* FIR speed */ | ||
805 | else { | ||
806 | mcs_unwrap_fir(mcs, urb->transfer_buffer, | ||
807 | urb->actual_length); | ||
808 | } | ||
809 | mcs->netdev->last_rx = jiffies; | ||
810 | do_gettimeofday(&mcs->rx_time); | ||
811 | } | ||
812 | |||
813 | ret = usb_submit_urb(urb, GFP_ATOMIC); | ||
814 | } | ||
815 | |||
816 | /* Transmit callback funtion. */ | ||
817 | static void mcs_send_irq(struct urb *urb, struct pt_regs *regs) | ||
818 | { | ||
819 | struct mcs_cb *mcs = urb->context; | ||
820 | struct net_device *ndev = mcs->netdev; | ||
821 | |||
822 | if (unlikely(mcs->new_speed)) | ||
823 | schedule_work(&mcs->work); | ||
824 | else | ||
825 | netif_wake_queue(ndev); | ||
826 | } | ||
827 | |||
828 | /* Transmit callback funtion. */ | ||
829 | static int mcs_hard_xmit(struct sk_buff *skb, struct net_device *ndev) | ||
830 | { | ||
831 | unsigned long flags; | ||
832 | struct mcs_cb *mcs; | ||
833 | int wraplen; | ||
834 | int ret = 0; | ||
835 | |||
836 | |||
837 | if (skb == NULL || ndev == NULL) | ||
838 | return -EINVAL; | ||
839 | |||
840 | netif_stop_queue(ndev); | ||
841 | mcs = netdev_priv(ndev); | ||
842 | |||
843 | spin_lock_irqsave(&mcs->lock, flags); | ||
844 | |||
845 | mcs->new_speed = irda_get_next_speed(skb); | ||
846 | if (likely(mcs->new_speed == mcs->speed)) | ||
847 | mcs->new_speed = 0; | ||
848 | |||
849 | /* SIR speed */ | ||
850 | if(mcs->speed < 576000) { | ||
851 | wraplen = mcs_wrap_sir_skb(skb, mcs->out_buf); | ||
852 | } | ||
853 | /* MIR speed */ | ||
854 | else if(mcs->speed == 576000 || mcs->speed == 1152000) { | ||
855 | wraplen = mcs_wrap_mir_skb(skb, mcs->out_buf); | ||
856 | } | ||
857 | /* FIR speed */ | ||
858 | else { | ||
859 | wraplen = mcs_wrap_fir_skb(skb, mcs->out_buf); | ||
860 | } | ||
861 | usb_fill_bulk_urb(mcs->tx_urb, mcs->usbdev, | ||
862 | usb_sndbulkpipe(mcs->usbdev, mcs->ep_out), | ||
863 | mcs->out_buf, wraplen, mcs_send_irq, mcs); | ||
864 | |||
865 | if ((ret = usb_submit_urb(mcs->tx_urb, GFP_ATOMIC))) { | ||
866 | IRDA_ERROR("failed tx_urb: %d", ret); | ||
867 | switch (ret) { | ||
868 | case -ENODEV: | ||
869 | case -EPIPE: | ||
870 | break; | ||
871 | default: | ||
872 | mcs->stats.tx_errors++; | ||
873 | netif_start_queue(ndev); | ||
874 | } | ||
875 | } else { | ||
876 | mcs->stats.tx_packets++; | ||
877 | mcs->stats.tx_bytes += skb->len; | ||
878 | } | ||
879 | |||
880 | dev_kfree_skb(skb); | ||
881 | spin_unlock_irqrestore(&mcs->lock, flags); | ||
882 | return ret; | ||
883 | } | ||
884 | |||
885 | /* | ||
886 | * This function is called by the USB subsystem for each new device in the | ||
887 | * system. Need to verify the device and if it is, then start handling it. | ||
888 | */ | ||
889 | static int mcs_probe(struct usb_interface *intf, | ||
890 | const struct usb_device_id *id) | ||
891 | { | ||
892 | struct usb_device *udev = interface_to_usbdev(intf); | ||
893 | struct net_device *ndev = NULL; | ||
894 | struct mcs_cb *mcs; | ||
895 | int ret = -ENOMEM; | ||
896 | |||
897 | ndev = alloc_irdadev(sizeof(*mcs)); | ||
898 | if (!ndev) | ||
899 | goto error1; | ||
900 | |||
901 | IRDA_DEBUG(1, "MCS7780 USB-IrDA bridge found at %d.", udev->devnum); | ||
902 | |||
903 | /* what is it realy for? */ | ||
904 | SET_MODULE_OWNER(ndev); | ||
905 | SET_NETDEV_DEV(ndev, &intf->dev); | ||
906 | |||
907 | ret = usb_reset_configuration(udev); | ||
908 | if (ret != 0) { | ||
909 | IRDA_ERROR("mcs7780: usb reset configuration failed"); | ||
910 | goto error2; | ||
911 | } | ||
912 | |||
913 | mcs = netdev_priv(ndev); | ||
914 | mcs->usbdev = udev; | ||
915 | mcs->netdev = ndev; | ||
916 | spin_lock_init(&mcs->lock); | ||
917 | |||
918 | /* Initialize QoS for this device */ | ||
919 | irda_init_max_qos_capabilies(&mcs->qos); | ||
920 | |||
921 | /* That's the Rx capability. */ | ||
922 | mcs->qos.baud_rate.bits &= | ||
923 | IR_2400 | IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200 | ||
924 | | IR_576000 | IR_1152000 | (IR_4000000 << 8); | ||
925 | |||
926 | |||
927 | mcs->qos.min_turn_time.bits &= qos_mtt_bits; | ||
928 | irda_qos_bits_to_value(&mcs->qos); | ||
929 | |||
930 | /* Speed change work initialisation*/ | ||
931 | INIT_WORK(&mcs->work, mcs_speed_work, mcs); | ||
932 | |||
933 | /* Override the network functions we need to use */ | ||
934 | ndev->hard_start_xmit = mcs_hard_xmit; | ||
935 | ndev->open = mcs_net_open; | ||
936 | ndev->stop = mcs_net_close; | ||
937 | ndev->get_stats = mcs_net_get_stats; | ||
938 | ndev->do_ioctl = mcs_net_ioctl; | ||
939 | |||
940 | if (!intf->cur_altsetting) | ||
941 | goto error2; | ||
942 | |||
943 | ret = mcs_find_endpoints(mcs, intf->cur_altsetting->endpoint, | ||
944 | intf->cur_altsetting->desc.bNumEndpoints); | ||
945 | if (!ret) { | ||
946 | ret = -ENODEV; | ||
947 | goto error2; | ||
948 | } | ||
949 | |||
950 | ret = register_netdev(ndev); | ||
951 | if (ret != 0) | ||
952 | goto error2; | ||
953 | |||
954 | IRDA_DEBUG(1, "IrDA: Registered MosChip MCS7780 device as %s", | ||
955 | ndev->name); | ||
956 | |||
957 | mcs->transceiver_type = transceiver_type; | ||
958 | mcs->sir_tweak = sir_tweak; | ||
959 | mcs->receive_mode = receive_mode; | ||
960 | |||
961 | usb_set_intfdata(intf, mcs); | ||
962 | return 0; | ||
963 | |||
964 | error2: | ||
965 | free_netdev(ndev); | ||
966 | |||
967 | error1: | ||
968 | return ret; | ||
969 | } | ||
970 | |||
971 | /* The current device is removed, the USB layer tells us to shut down. */ | ||
972 | static void mcs_disconnect(struct usb_interface *intf) | ||
973 | { | ||
974 | struct mcs_cb *mcs = usb_get_intfdata(intf); | ||
975 | |||
976 | if (!mcs) | ||
977 | return; | ||
978 | |||
979 | flush_scheduled_work(); | ||
980 | |||
981 | unregister_netdev(mcs->netdev); | ||
982 | free_netdev(mcs->netdev); | ||
983 | |||
984 | usb_set_intfdata(intf, NULL); | ||
985 | IRDA_DEBUG(0, "MCS7780 now disconnected."); | ||
986 | } | ||
987 | |||
988 | /* Module insertion */ | ||
989 | static int __init mcs_init(void) | ||
990 | { | ||
991 | int result; | ||
992 | |||
993 | /* register this driver with the USB subsystem */ | ||
994 | result = usb_register(&mcs_driver); | ||
995 | if (result) | ||
996 | IRDA_ERROR("usb_register failed. Error number %d", result); | ||
997 | |||
998 | return result; | ||
999 | } | ||
1000 | module_init(mcs_init); | ||
1001 | |||
1002 | /* Module removal */ | ||
1003 | static void __exit mcs_exit(void) | ||
1004 | { | ||
1005 | /* deregister this driver with the USB subsystem */ | ||
1006 | usb_deregister(&mcs_driver); | ||
1007 | } | ||
1008 | module_exit(mcs_exit); | ||
1009 | |||
diff --git a/drivers/net/irda/mcs7780.h b/drivers/net/irda/mcs7780.h new file mode 100644 index 000000000000..1a723d725c2a --- /dev/null +++ b/drivers/net/irda/mcs7780.h | |||
@@ -0,0 +1,167 @@ | |||
1 | /***************************************************************************** | ||
2 | * | ||
3 | * Filename: mcs7780.h | ||
4 | * Version: 0.2-alpha | ||
5 | * Description: Irda MosChip USB Dongle | ||
6 | * Status: Experimental | ||
7 | * Authors: Lukasz Stelmach <stlman@poczta.fm> | ||
8 | * Brian Pugh <bpugh@cs.pdx.edu> | ||
9 | * | ||
10 | * Copyright (C) 2005, Lukasz Stelmach <stlman@poczta.fm> | ||
11 | * Copyright (C) 2005, Brian Pugh <bpugh@cs.pdx.edu> | ||
12 | * | ||
13 | * This program is free software; you can redistribute it and/or modify | ||
14 | * it under the terms of the GNU General Public License as published by | ||
15 | * the Free Software Foundation; either version 2 of the License, or | ||
16 | * (at your option) any later version. | ||
17 | * | ||
18 | * This program is distributed in the hope that it will be useful, | ||
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
21 | * GNU General Public License for more details. | ||
22 | * | ||
23 | * You should have received a copy of the GNU General Public License | ||
24 | * along with this program; if not, write to the Free Software | ||
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
26 | * | ||
27 | *****************************************************************************/ | ||
28 | #ifndef _MCS7780_H | ||
29 | #define _MCS7780_H | ||
30 | |||
31 | #define MCS_MODE_SIR 0 | ||
32 | #define MCS_MODE_MIR 1 | ||
33 | #define MCS_MODE_FIR 2 | ||
34 | |||
35 | #define MCS_CTRL_TIMEOUT 500 | ||
36 | #define MCS_XMIT_TIMEOUT 500 | ||
37 | /* Possible transceiver types */ | ||
38 | #define MCS_TSC_VISHAY 0 /* Vishay TFD, default choice */ | ||
39 | #define MCS_TSC_AGILENT 1 /* Agilent 3602/3600 */ | ||
40 | #define MCS_TSC_SHARP 2 /* Sharp GP2W1000YP */ | ||
41 | |||
42 | /* Requests */ | ||
43 | #define MCS_RD_RTYPE 0xC0 | ||
44 | #define MCS_WR_RTYPE 0x40 | ||
45 | #define MCS_RDREQ 0x0F | ||
46 | #define MCS_WRREQ 0x0E | ||
47 | |||
48 | /* Register 0x00 */ | ||
49 | #define MCS_MODE_REG 0 | ||
50 | #define MCS_FIR ((__u16)0x0001) | ||
51 | #define MCS_SIR16US ((__u16)0x0002) | ||
52 | #define MCS_BBTG ((__u16)0x0004) | ||
53 | #define MCS_ASK ((__u16)0x0008) | ||
54 | #define MCS_PARITY ((__u16)0x0010) | ||
55 | |||
56 | /* SIR/MIR speed constants */ | ||
57 | #define MCS_SPEED_SHIFT 5 | ||
58 | #define MCS_SPEED_MASK ((__u16)0x00E0) | ||
59 | #define MCS_SPEED(x) ((x & MCS_SPEED_MASK) >> MCS_SPEED_SHIFT) | ||
60 | #define MCS_SPEED_2400 ((0 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
61 | #define MCS_SPEED_9600 ((1 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
62 | #define MCS_SPEED_19200 ((2 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
63 | #define MCS_SPEED_38400 ((3 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
64 | #define MCS_SPEED_57600 ((4 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
65 | #define MCS_SPEED_115200 ((5 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
66 | #define MCS_SPEED_576000 ((6 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
67 | #define MCS_SPEED_1152000 ((7 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) | ||
68 | |||
69 | #define MCS_PLLPWDN ((__u16)0x0100) | ||
70 | #define MCS_DRIVER ((__u16)0x0200) | ||
71 | #define MCS_DTD ((__u16)0x0400) | ||
72 | #define MCS_DIR ((__u16)0x0800) | ||
73 | #define MCS_SIPEN ((__u16)0x1000) | ||
74 | #define MCS_SENDSIP ((__u16)0x2000) | ||
75 | #define MCS_CHGDIR ((__u16)0x4000) | ||
76 | #define MCS_RESET ((__u16)0x8000) | ||
77 | |||
78 | /* Register 0x02 */ | ||
79 | #define MCS_XCVR_REG 2 | ||
80 | #define MCS_MODE0 ((__u16)0x0001) | ||
81 | #define MCS_STFIR ((__u16)0x0002) | ||
82 | #define MCS_XCVR_CONF ((__u16)0x0004) | ||
83 | #define MCS_RXFAST ((__u16)0x0008) | ||
84 | /* TXCUR [6:4] */ | ||
85 | #define MCS_TXCUR_SHIFT 4 | ||
86 | #define MCS_TXCUR_MASK ((__u16)0x0070) | ||
87 | #define MCS_TXCUR(x) ((x & MCS_TXCUR_MASK) >> MCS_TXCUR_SHIFT) | ||
88 | #define MCS_SETTXCUR(x,y) \ | ||
89 | ((x & ~MCS_TXCUR_MASK) | (y << MCS_TXCUR_SHIFT) & MCS_TXCUR_MASK) | ||
90 | |||
91 | #define MCS_MODE1 ((__u16)0x0080) | ||
92 | #define MCS_SMODE0 ((__u16)0x0100) | ||
93 | #define MCS_SMODE1 ((__u16)0x0200) | ||
94 | #define MCS_INVTX ((__u16)0x0400) | ||
95 | #define MCS_INVRX ((__u16)0x0800) | ||
96 | |||
97 | #define MCS_MINRXPW_REG 4 | ||
98 | |||
99 | #define MCS_RESV_REG 7 | ||
100 | #define MCS_IRINTX ((__u16)0x0001) | ||
101 | #define MCS_IRINRX ((__u16)0x0002) | ||
102 | |||
103 | struct mcs_cb { | ||
104 | struct usb_device *usbdev; /* init: probe_irda */ | ||
105 | struct net_device *netdev; /* network layer */ | ||
106 | struct irlap_cb *irlap; /* The link layer we are binded to */ | ||
107 | struct net_device_stats stats; /* network statistics */ | ||
108 | struct qos_info qos; | ||
109 | unsigned int speed; /* Current speed */ | ||
110 | unsigned int new_speed; /* new speed */ | ||
111 | |||
112 | struct work_struct work; /* Change speed work */ | ||
113 | |||
114 | struct sk_buff *tx_pending; | ||
115 | char in_buf[4096]; /* transmit/receive buffer */ | ||
116 | char out_buf[4096]; /* transmit/receive buffer */ | ||
117 | __u8 *fifo_status; | ||
118 | |||
119 | iobuff_t rx_buff; /* receive unwrap state machine */ | ||
120 | struct timeval rx_time; | ||
121 | spinlock_t lock; | ||
122 | int receiving; | ||
123 | |||
124 | __u8 ep_in; | ||
125 | __u8 ep_out; | ||
126 | |||
127 | struct urb *rx_urb; | ||
128 | struct urb *tx_urb; | ||
129 | |||
130 | int transceiver_type; | ||
131 | int sir_tweak; | ||
132 | int receive_mode; | ||
133 | }; | ||
134 | |||
135 | static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val); | ||
136 | static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val); | ||
137 | |||
138 | static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs); | ||
139 | static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs); | ||
140 | static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs); | ||
141 | static inline int mcs_setup_transceiver(struct mcs_cb *mcs); | ||
142 | static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf); | ||
143 | static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf); | ||
144 | static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf); | ||
145 | static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len); | ||
146 | static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len); | ||
147 | static inline int mcs_setup_urbs(struct mcs_cb *mcs); | ||
148 | static inline int mcs_receive_start(struct mcs_cb *mcs); | ||
149 | static inline int mcs_find_endpoints(struct mcs_cb *mcs, | ||
150 | struct usb_host_endpoint *ep, int epnum); | ||
151 | |||
152 | static int mcs_speed_change(struct mcs_cb *mcs); | ||
153 | |||
154 | static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd); | ||
155 | static int mcs_net_close(struct net_device *netdev); | ||
156 | static int mcs_net_open(struct net_device *netdev); | ||
157 | static struct net_device_stats *mcs_net_get_stats(struct net_device *netdev); | ||
158 | |||
159 | static void mcs_receive_irq(struct urb *urb, struct pt_regs *regs); | ||
160 | static void mcs_send_irq(struct urb *urb, struct pt_regs *regs); | ||
161 | static int mcs_hard_xmit(struct sk_buff *skb, struct net_device *netdev); | ||
162 | |||
163 | static int mcs_probe(struct usb_interface *intf, | ||
164 | const struct usb_device_id *id); | ||
165 | static void mcs_disconnect(struct usb_interface *intf); | ||
166 | |||
167 | #endif /* _MCS7780_H */ | ||