visor.c 30.1 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1 2 3 4 5 6 7
/*
 * USB HandSpring Visor, Palm m50x, and Sony Clie driver
 * (supports all of the Palm OS USB devices)
 *
 *	Copyright (C) 1999 - 2004
 *	    Greg Kroah-Hartman (greg@kroah.com)
 *
8 9 10
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License version
 *	2 as published by the Free Software Foundation.
Linus Torvalds's avatar
Linus Torvalds committed
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
 *
 * See Documentation/usb/usb-serial.txt for more information on using this driver
 *
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
28
#include <linux/usb/serial.h>
Linus Torvalds's avatar
Linus Torvalds committed
29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
#include "visor.h"

/*
 * Version Information
 */
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
#define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"

/* function prototypes for a handspring visor */
static int  visor_open		(struct usb_serial_port *port, struct file *filp);
static void visor_close		(struct usb_serial_port *port, struct file *filp);
static int  visor_write		(struct usb_serial_port *port, const unsigned char *buf, int count);
static int  visor_write_room		(struct usb_serial_port *port);
static int  visor_chars_in_buffer	(struct usb_serial_port *port);
static void visor_throttle	(struct usb_serial_port *port);
static void visor_unthrottle	(struct usb_serial_port *port);
static int  visor_probe		(struct usb_serial *serial, const struct usb_device_id *id);
static int  visor_calc_num_ports(struct usb_serial *serial);
static void visor_shutdown	(struct usb_serial *serial);
static int  visor_ioctl		(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
49 50 51
static void visor_write_bulk_callback	(struct urb *urb);
static void visor_read_bulk_callback	(struct urb *urb);
static void visor_read_int_callback	(struct urb *urb);
Linus Torvalds's avatar
Linus Torvalds committed
52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
static int  clie_3_5_startup	(struct usb_serial *serial);
static int  treo_attach		(struct usb_serial *serial);
static int clie_5_attach (struct usb_serial *serial);
static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);

/* Parameters that may be passed into the module. */
static int debug;
static __u16 vendor;
static __u16 product;

static struct usb_device_id id_table [] = {
	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
		.driver_info = (kernel_ulong_t)&palm_os_3_probe },
	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
70 71
	{ USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
Linus Torvalds's avatar
Linus Torvalds committed
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 89
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
Linus Torvalds's avatar
Linus Torvalds committed
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 107
	{ USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
Linus Torvalds's avatar
Linus Torvalds committed
108 109 110 111
	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID), 
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID), 
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
112 113
	{ USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
Linus Torvalds's avatar
Linus Torvalds committed
114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141
	{ USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID), 
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ },					/* optional parameter entry */
	{ }					/* Terminating entry */
};

static struct usb_device_id clie_id_5_table [] = {
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
	{ },					/* optional parameter entry */
	{ }					/* Terminating entry */
};

static struct usb_device_id clie_id_3_5_table [] = {
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
	{ }					/* Terminating entry */
};

static struct usb_device_id id_table_combined [] = {
	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
	{ USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
142
	{ USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
Linus Torvalds's avatar
Linus Torvalds committed
143 144 145 146 147 148 149 150
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
151
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
Linus Torvalds's avatar
Linus Torvalds committed
152 153 154 155 156 157 158 159 160 161 162 163
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
	{ USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
	{ USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
164
	{ USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
Linus Torvalds's avatar
Linus Torvalds committed
165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
	{ USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
	{ USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
	{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
	{ USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
	{ },					/* optional parameter entry */
	{ }					/* Terminating entry */
};

MODULE_DEVICE_TABLE (usb, id_table_combined);

static struct usb_driver visor_driver = {
	.name =		"visor",
	.probe =	usb_serial_probe,
	.disconnect =	usb_serial_disconnect,
	.id_table =	id_table_combined,
180
	.no_dynamic_id = 	1,
Linus Torvalds's avatar
Linus Torvalds committed
181 182 183
};

/* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
184
static struct usb_serial_driver handspring_device = {
185 186
	.driver = {
		.owner =	THIS_MODULE,
187
		.name =		"visor",
188
	},
189
	.description =		"Handspring Visor / Palm OS",
190
	.usb_driver =		&visor_driver,
Linus Torvalds's avatar
Linus Torvalds committed
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213
	.id_table =		id_table,
	.num_interrupt_in =	NUM_DONT_CARE,
	.num_bulk_in =		2,
	.num_bulk_out =		2,
	.num_ports =		2,
	.open =			visor_open,
	.close =		visor_close,
	.throttle =		visor_throttle,
	.unthrottle =		visor_unthrottle,
	.attach =		treo_attach,
	.probe =		visor_probe,
	.calc_num_ports =	visor_calc_num_ports,
	.shutdown =		visor_shutdown,
	.ioctl =		visor_ioctl,
	.write =		visor_write,
	.write_room =		visor_write_room,
	.chars_in_buffer =	visor_chars_in_buffer,
	.write_bulk_callback =	visor_write_bulk_callback,
	.read_bulk_callback =	visor_read_bulk_callback,
	.read_int_callback =	visor_read_int_callback,
};

/* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
214
static struct usb_serial_driver clie_5_device = {
215 216
	.driver = {
		.owner =	THIS_MODULE,
217
		.name =		"clie_5",
218
	},
219
	.description =		"Sony Clie 5.0",
220
	.usb_driver =		&visor_driver,
Linus Torvalds's avatar
Linus Torvalds committed
221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243
	.id_table =		clie_id_5_table,
	.num_interrupt_in =	NUM_DONT_CARE,
	.num_bulk_in =		2,
	.num_bulk_out =		2,
	.num_ports =		2,
	.open =			visor_open,
	.close =		visor_close,
	.throttle =		visor_throttle,
	.unthrottle =		visor_unthrottle,
	.attach =		clie_5_attach,
	.probe =		visor_probe,
	.calc_num_ports =	visor_calc_num_ports,
	.shutdown =		visor_shutdown,
	.ioctl =		visor_ioctl,
	.write =		visor_write,
	.write_room =		visor_write_room,
	.chars_in_buffer =	visor_chars_in_buffer,
	.write_bulk_callback =	visor_write_bulk_callback,
	.read_bulk_callback =	visor_read_bulk_callback,
	.read_int_callback =	visor_read_int_callback,
};

/* device info for the Sony Clie OS version 3.5 */
244
static struct usb_serial_driver clie_3_5_device = {
245 246
	.driver = {
		.owner =	THIS_MODULE,
247
		.name =		"clie_3.5",
248
	},
249
	.description =		"Sony Clie 3.5",
250
	.usb_driver =		&visor_driver,
Linus Torvalds's avatar
Linus Torvalds committed
251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273
	.id_table =		clie_id_3_5_table,
	.num_interrupt_in =	0,
	.num_bulk_in =		1,
	.num_bulk_out =		1,
	.num_ports =		1,
	.open =			visor_open,
	.close =		visor_close,
	.throttle =		visor_throttle,
	.unthrottle =		visor_unthrottle,
	.attach =		clie_3_5_startup,
	.ioctl =		visor_ioctl,
	.write =		visor_write,
	.write_room =		visor_write_room,
	.chars_in_buffer =	visor_chars_in_buffer,
	.write_bulk_callback =	visor_write_bulk_callback,
	.read_bulk_callback =	visor_read_bulk_callback,
};

struct visor_private {
	spinlock_t lock;
	int bytes_in;
	int bytes_out;
	int outstanding_urbs;
274 275
	unsigned char throttled;
	unsigned char actually_throttled;
Linus Torvalds's avatar
Linus Torvalds committed
276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349
};

/* number of outstanding urbs to prevent userspace DoS from happening */
#define URB_UPPER_LIMIT	42

static int stats;

/******************************************************************************
 * Handspring Visor specific driver functions
 ******************************************************************************/
static int visor_open (struct usb_serial_port *port, struct file *filp)
{
	struct usb_serial *serial = port->serial;
	struct visor_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	int result = 0;

	dbg("%s - port %d", __FUNCTION__, port->number);

	if (!port->read_urb) {
		/* this is needed for some brain dead Sony devices */
		dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
		return -ENODEV;
	}

	spin_lock_irqsave(&priv->lock, flags);
	priv->bytes_in = 0;
	priv->bytes_out = 0;
	priv->throttled = 0;
	spin_unlock_irqrestore(&priv->lock, flags);

	/*
	 * Force low_latency on so that our tty_push actually forces the data
	 * through, otherwise it is scheduled, and with high data rates (like
	 * with OHCI) data can get lost.
	 */
	if (port->tty)
		port->tty->low_latency = 1;

	/* Start reading from the device */
	usb_fill_bulk_urb (port->read_urb, serial->dev,
			   usb_rcvbulkpipe (serial->dev, 
					    port->bulk_in_endpointAddress),
			   port->read_urb->transfer_buffer,
			   port->read_urb->transfer_buffer_length,
			   visor_read_bulk_callback, port);
	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
	if (result) {
		dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
			__FUNCTION__, result);
		goto exit;
	}
	
	if (port->interrupt_in_urb) {
		dbg("%s - adding interrupt input for treo", __FUNCTION__);
		result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
		if (result)
			dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
				__FUNCTION__, result);
	}
exit:	
	return result;
}


static void visor_close (struct usb_serial_port *port, struct file * filp)
{
	struct visor_private *priv = usb_get_serial_port_data(port);
	unsigned char *transfer_buffer;

	dbg("%s - port %d", __FUNCTION__, port->number);
			 
	/* shutdown our urbs */
	usb_kill_urb(port->read_urb);
350
	usb_kill_urb(port->interrupt_in_urb);
Linus Torvalds's avatar
Linus Torvalds committed
351

352 353 354 355 356 357 358 359 360 361 362 363
	mutex_lock(&port->serial->disc_mutex);
	if (!port->serial->disconnected) {
		/* Try to send shutdown message, unless the device is gone */
		transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
		if (transfer_buffer) {
			usb_control_msg (port->serial->dev,
					 usb_rcvctrlpipe(port->serial->dev, 0),
					 VISOR_CLOSE_NOTIFICATION, 0xc2,
					 0x0000, 0x0000,
					 transfer_buffer, 0x12, 300);
			kfree (transfer_buffer);
		}
Linus Torvalds's avatar
Linus Torvalds committed
364
	}
365
	mutex_unlock(&port->serial->disc_mutex);
Linus Torvalds's avatar
Linus Torvalds committed
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389

	if (stats)
		dev_info(&port->dev, "Bytes In = %d  Bytes Out = %d\n",
			 priv->bytes_in, priv->bytes_out);
}


static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
{
	struct visor_private *priv = usb_get_serial_port_data(port);
	struct usb_serial *serial = port->serial;
	struct urb *urb;
	unsigned char *buffer;
	unsigned long flags;
	int status;

	dbg("%s - port %d", __FUNCTION__, port->number);

	spin_lock_irqsave(&priv->lock, flags);
	if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
		spin_unlock_irqrestore(&priv->lock, flags);
		dbg("%s - write limit hit\n", __FUNCTION__);
		return 0;
	}
Oliver Neukum's avatar
Oliver Neukum committed
390
	priv->outstanding_urbs++;
Linus Torvalds's avatar
Linus Torvalds committed
391 392 393 394 395
	spin_unlock_irqrestore(&priv->lock, flags);

	buffer = kmalloc (count, GFP_ATOMIC);
	if (!buffer) {
		dev_err(&port->dev, "out of memory\n");
Oliver Neukum's avatar
Oliver Neukum committed
396 397
		count = -ENOMEM;
		goto error_no_buffer;
Linus Torvalds's avatar
Linus Torvalds committed
398 399 400 401 402
	}

	urb = usb_alloc_urb(0, GFP_ATOMIC);
	if (!urb) {
		dev_err(&port->dev, "no more free urbs\n");
Oliver Neukum's avatar
Oliver Neukum committed
403 404
		count = -ENOMEM;
		goto error_no_urb;
Linus Torvalds's avatar
Linus Torvalds committed
405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422
	}

	memcpy (buffer, buf, count);

	usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);

	usb_fill_bulk_urb (urb, serial->dev,
			   usb_sndbulkpipe (serial->dev,
					    port->bulk_out_endpointAddress),
			   buffer, count, 
			   visor_write_bulk_callback, port);

	/* send it down the pipe */
	status = usb_submit_urb(urb, GFP_ATOMIC);
	if (status) {
		dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
			__FUNCTION__, status);
		count = status;
Oliver Neukum's avatar
Oliver Neukum committed
423
		goto error;
Linus Torvalds's avatar
Linus Torvalds committed
424 425 426 427 428 429 430 431
	} else {
		spin_lock_irqsave(&priv->lock, flags);
		priv->bytes_out += count;
		spin_unlock_irqrestore(&priv->lock, flags);
	}

	/* we are done with this urb, so let the host driver
	 * really free it when it is finished with it */
Oliver Neukum's avatar
Oliver Neukum committed
432
	usb_free_urb(urb);
Linus Torvalds's avatar
Linus Torvalds committed
433

Oliver Neukum's avatar
Oliver Neukum committed
434 435 436 437 438 439 440 441 442
	return count;
error:
	usb_free_urb(urb);
error_no_urb:
	kfree(buffer);
error_no_buffer:
	spin_lock_irqsave(&priv->lock, flags);
	--priv->outstanding_urbs;
	spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds's avatar
Linus Torvalds committed
443 444 445 446 447 448
	return count;
}


static int visor_write_room (struct usb_serial_port *port)
{
Pete Zaitcev's avatar
Pete Zaitcev committed
449 450 451
	struct visor_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;

Linus Torvalds's avatar
Linus Torvalds committed
452 453 454 455 456
	dbg("%s - port %d", __FUNCTION__, port->number);

	/*
	 * We really can take anything the user throws at us
	 * but let's pick a nice big number to tell the tty
Pete Zaitcev's avatar
Pete Zaitcev committed
457
	 * layer that we have lots of free space, unless we don't.
Linus Torvalds's avatar
Linus Torvalds committed
458
	 */
Pete Zaitcev's avatar
Pete Zaitcev committed
459 460 461 462 463 464 465 466 467

	spin_lock_irqsave(&priv->lock, flags);
	if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
		spin_unlock_irqrestore(&priv->lock, flags);
		dbg("%s - write limit hit\n", __FUNCTION__);
		return 0;
	}
	spin_unlock_irqrestore(&priv->lock, flags);

Linus Torvalds's avatar
Linus Torvalds committed
468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485
	return 2048;
}


static int visor_chars_in_buffer (struct usb_serial_port *port)
{
	dbg("%s - port %d", __FUNCTION__, port->number);

	/* 
	 * We can't really account for how much data we
	 * have sent out, but hasn't made it through to the
	 * device, so just tell the tty layer that everything
	 * is flushed.
	 */
	return 0;
}


486
static void visor_write_bulk_callback (struct urb *urb)
Linus Torvalds's avatar
Linus Torvalds committed
487 488 489
{
	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
	struct visor_private *priv = usb_get_serial_port_data(port);
490
	int status = urb->status;
Linus Torvalds's avatar
Linus Torvalds committed
491 492 493 494 495 496
	unsigned long flags;

	/* free up the transfer buffer, as usb_free_urb() does not do this */
	kfree (urb->transfer_buffer);

	dbg("%s - port %d", __FUNCTION__, port->number);
497 498

	if (status)
Linus Torvalds's avatar
Linus Torvalds committed
499
		dbg("%s - nonzero write bulk status received: %d",
500
		    __FUNCTION__, status);
Linus Torvalds's avatar
Linus Torvalds committed
501 502 503 504 505

	spin_lock_irqsave(&priv->lock, flags);
	--priv->outstanding_urbs;
	spin_unlock_irqrestore(&priv->lock, flags);

506
	usb_serial_port_softint(port);
Linus Torvalds's avatar
Linus Torvalds committed
507 508 509
}


510
static void visor_read_bulk_callback (struct urb *urb)
Linus Torvalds's avatar
Linus Torvalds committed
511 512 513 514
{
	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
	struct visor_private *priv = usb_get_serial_port_data(port);
	unsigned char *data = urb->transfer_buffer;
515
	int status = urb->status;
Linus Torvalds's avatar
Linus Torvalds committed
516 517
	struct tty_struct *tty;
	int result;
518
	int available_room;
Linus Torvalds's avatar
Linus Torvalds committed
519 520 521

	dbg("%s - port %d", __FUNCTION__, port->number);

522 523 524
	if (status) {
		dbg("%s - nonzero read bulk status received: %d",
		    __FUNCTION__, status);
Linus Torvalds's avatar
Linus Torvalds committed
525 526 527 528 529 530 531
		return;
	}

	usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);

	tty = port->tty;
	if (tty && urb->actual_length) {
532 533 534 535 536 537 538 539 540 541
		available_room = tty_buffer_request_room(tty, urb->actual_length);
		if (available_room) {
			tty_insert_flip_string(tty, data, available_room);
			tty_flip_buffer_push(tty);
		}
		spin_lock(&priv->lock);
		priv->bytes_in += available_room;

	} else {
		spin_lock(&priv->lock);
Linus Torvalds's avatar
Linus Torvalds committed
542 543 544
	}

	/* Continue trying to always read if we should */
545
	if (!priv->throttled) {
Linus Torvalds's avatar
Linus Torvalds committed
546 547 548 549 550 551 552 553 554
		usb_fill_bulk_urb (port->read_urb, port->serial->dev,
				   usb_rcvbulkpipe(port->serial->dev,
						   port->bulk_in_endpointAddress),
				   port->read_urb->transfer_buffer,
				   port->read_urb->transfer_buffer_length,
				   visor_read_bulk_callback, port);
		result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
		if (result)
			dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
555 556
	} else {
		priv->actually_throttled = 1;
Linus Torvalds's avatar
Linus Torvalds committed
557
	}
558
	spin_unlock(&priv->lock);
Linus Torvalds's avatar
Linus Torvalds committed
559 560
}

561
static void visor_read_int_callback (struct urb *urb)
Linus Torvalds's avatar
Linus Torvalds committed
562 563
{
	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
564
	int status = urb->status;
Linus Torvalds's avatar
Linus Torvalds committed
565 566
	int result;

567
	switch (status) {
Linus Torvalds's avatar
Linus Torvalds committed
568 569 570 571 572 573 574 575
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d",
576
		    __FUNCTION__, status);
Linus Torvalds's avatar
Linus Torvalds committed
577 578 579
		return;
	default:
		dbg("%s - nonzero urb status received: %d",
580
		    __FUNCTION__, status);
Linus Torvalds's avatar
Linus Torvalds committed
581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621
		goto exit;
	}

	/*
	 * This information is still unknown what it can be used for.
	 * If anyone has an idea, please let the author know...
	 *
	 * Rumor has it this endpoint is used to notify when data
	 * is ready to be read from the bulk ones.
	 */
	usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
			      urb->actual_length, urb->transfer_buffer);

exit:
	result = usb_submit_urb (urb, GFP_ATOMIC);
	if (result)
		dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
			__FUNCTION__, result);
}

static void visor_throttle (struct usb_serial_port *port)
{
	struct visor_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;

	dbg("%s - port %d", __FUNCTION__, port->number);
	spin_lock_irqsave(&priv->lock, flags);
	priv->throttled = 1;
	spin_unlock_irqrestore(&priv->lock, flags);
}


static void visor_unthrottle (struct usb_serial_port *port)
{
	struct visor_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	int result;

	dbg("%s - port %d", __FUNCTION__, port->number);
	spin_lock_irqsave(&priv->lock, flags);
	priv->throttled = 0;
622
	priv->actually_throttled = 0;
Linus Torvalds's avatar
Linus Torvalds committed
623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
	spin_unlock_irqrestore(&priv->lock, flags);

	port->read_urb->dev = port->serial->dev;
	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
	if (result)
		dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
}

static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
	struct device *dev = &serial->dev->dev;
	struct visor_connection_info *connection_info;
	unsigned char *transfer_buffer;
	char *string;
	int retval = 0;
	int i;
	int num_ports = 0;

	dbg("%s", __FUNCTION__);

	transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
	if (!transfer_buffer) {
		dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
			sizeof(*connection_info));
		return -ENOMEM;
	}

	/* send a get connection info request */
	retval = usb_control_msg (serial->dev,
				  usb_rcvctrlpipe(serial->dev, 0),
				  VISOR_GET_CONNECTION_INFORMATION,
				  0xc2, 0x0000, 0x0000, transfer_buffer,
				  sizeof(*connection_info), 300);
	if (retval < 0) {
		dev_err(dev, "%s - error %d getting connection information\n",
			__FUNCTION__, retval);
		goto exit;
	}

	if (retval == sizeof(*connection_info)) {
	        connection_info = (struct visor_connection_info *)transfer_buffer;

		num_ports = le16_to_cpu(connection_info->num_ports);
		for (i = 0; i < num_ports; ++i) {
			switch (connection_info->connections[i].port_function_id) {
				case VISOR_FUNCTION_GENERIC:
					string = "Generic";
					break;
				case VISOR_FUNCTION_DEBUGGER:
					string = "Debugger";
					break;
				case VISOR_FUNCTION_HOTSYNC:
					string = "HotSync";
					break;
				case VISOR_FUNCTION_CONSOLE:
					string = "Console";
					break;
				case VISOR_FUNCTION_REMOTE_FILE_SYS:
					string = "Remote File System";
					break;
				default:
					string = "unknown";
					break;
			}
			dev_info(dev, "%s: port %d, is for %s use\n",
688
				serial->type->description,
Linus Torvalds's avatar
Linus Torvalds committed
689 690 691 692 693 694 695 696
				connection_info->connections[i].port, string);
		}
	}
	/*
	* Handle devices that report invalid stuff here.
	*/
	if (num_ports == 0 || num_ports > 2) {
		dev_warn (dev, "%s: No valid connect info available\n",
697
			serial->type->description);
Linus Torvalds's avatar
Linus Torvalds committed
698 699 700
		num_ports = 2;
	}
  
701
	dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
Linus Torvalds's avatar
Linus Torvalds committed
702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792
		num_ports);

	/*
	 * save off our num_ports info so that we can use it in the
	 * calc_num_ports callback
	 */
	usb_set_serial_data(serial, (void *)(long)num_ports);

	/* ask for the number of bytes available, but ignore the response as it is broken */
	retval = usb_control_msg (serial->dev,
				  usb_rcvctrlpipe(serial->dev, 0),
				  VISOR_REQUEST_BYTES_AVAILABLE,
				  0xc2, 0x0000, 0x0005, transfer_buffer,
				  0x02, 300);
	if (retval < 0)
		dev_err(dev, "%s - error %d getting bytes available request\n",
			__FUNCTION__, retval);
	retval = 0;

exit:
	kfree (transfer_buffer);

	return retval;
}

static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
	struct device *dev = &serial->dev->dev;
	struct palm_ext_connection_info *connection_info;
	unsigned char *transfer_buffer;
	int retval;

	dbg("%s", __FUNCTION__);

	transfer_buffer =  kmalloc (sizeof (*connection_info), GFP_KERNEL);
	if (!transfer_buffer) {
		dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
			sizeof(*connection_info));
		return -ENOMEM;
	}

	retval = usb_control_msg (serial->dev,
				  usb_rcvctrlpipe(serial->dev, 0), 
				  PALM_GET_EXT_CONNECTION_INFORMATION,
				  0xc2, 0x0000, 0x0000, transfer_buffer,
				  sizeof (*connection_info), 300);
	if (retval < 0)
		dev_err(dev, "%s - error %d getting connection info\n",
			__FUNCTION__, retval);
	else
		usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
				      retval, transfer_buffer);

	kfree (transfer_buffer);
	return 0;
}


static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
{
	int retval = 0;
	int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);

	dbg("%s", __FUNCTION__);

	if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
		err("active config #%d != 1 ??",
			serial->dev->actconfig->desc.bConfigurationValue);
		return -ENODEV;
	}

	if (id->driver_info) {
		startup = (void *)id->driver_info;
		retval = startup(serial, id);
	}

	return retval;
}

static int visor_calc_num_ports (struct usb_serial *serial)
{
	int num_ports = (int)(long)(usb_get_serial_data(serial));

	if (num_ports)
		usb_set_serial_data(serial, NULL);

	return num_ports;
}

static int generic_startup(struct usb_serial *serial)
{
Pete Zaitcev's avatar
Pete Zaitcev committed
793
	struct usb_serial_port **ports = serial->port;
Linus Torvalds's avatar
Linus Torvalds committed
794 795 796 797
	struct visor_private *priv;
	int i;

	for (i = 0; i < serial->num_ports; ++i) {
798
		priv = kzalloc (sizeof(*priv), GFP_KERNEL);
Pete Zaitcev's avatar
Pete Zaitcev committed
799 800 801 802 803 804
		if (!priv) {
			while (i-- != 0) {
				priv = usb_get_serial_port_data(ports[i]);
				usb_set_serial_port_data(ports[i], NULL);
				kfree(priv);
			}
Linus Torvalds's avatar
Linus Torvalds committed
805
			return -ENOMEM;
Pete Zaitcev's avatar
Pete Zaitcev committed
806
		}
Linus Torvalds's avatar
Linus Torvalds committed
807
		spin_lock_init(&priv->lock);
Pete Zaitcev's avatar
Pete Zaitcev committed
808
		usb_set_serial_port_data(ports[i], priv);
Linus Torvalds's avatar
Linus Torvalds committed
809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917
	}
	return 0;
}

static int clie_3_5_startup (struct usb_serial *serial)
{
	struct device *dev = &serial->dev->dev;
	int result;
	u8 data;

	dbg("%s", __FUNCTION__);

	/*
	 * Note that PEG-300 series devices expect the following two calls.
	 */

	/* get the config number */
	result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
				  USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
				  0, 0, &data, 1, 3000);
	if (result < 0) {
		dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
		return result;
	}
	if (result != 1) {
		dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
		return -EIO;
	}

	/* get the interface number */
	result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
				  USB_REQ_GET_INTERFACE, 
				  USB_DIR_IN | USB_RECIP_INTERFACE,
				  0, 0, &data, 1, 3000);
	if (result < 0) {
		dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
		return result;
	}
	if (result != 1) {
		dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
		return -EIO;
	}

	return generic_startup(serial);
}
 
static int treo_attach (struct usb_serial *serial)
{
	struct usb_serial_port *swap_port;

	/* Only do this endpoint hack for the Handspring devices with
	 * interrupt in endpoints, which for now are the Treo devices. */
	if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
	      (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
	    (serial->num_interrupt_in == 0))
		goto generic_startup;

	dbg("%s", __FUNCTION__);

	/*
	* It appears that Treos and Kyoceras want to use the 
	* 1st bulk in endpoint to communicate with the 2nd bulk out endpoint, 
	* so let's swap the 1st and 2nd bulk in and interrupt endpoints.  
	* Note that swapping the bulk out endpoints would break lots of 
	* apps that want to communicate on the second port.
	*/
#define COPY_PORT(dest, src)						\
	dest->read_urb = src->read_urb;					\
	dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;	\
	dest->bulk_in_buffer = src->bulk_in_buffer;			\
	dest->interrupt_in_urb = src->interrupt_in_urb;			\
	dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress;	\
	dest->interrupt_in_buffer = src->interrupt_in_buffer;

	swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
	if (!swap_port)
		return -ENOMEM;
	COPY_PORT(swap_port, serial->port[0]);
	COPY_PORT(serial->port[0], serial->port[1]);
	COPY_PORT(serial->port[1], swap_port);
	kfree(swap_port);

generic_startup:
	return generic_startup(serial);
}

static int clie_5_attach (struct usb_serial *serial)
{
	dbg("%s", __FUNCTION__);

	/* TH55 registers 2 ports. 
	   Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0 
	   Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1 
	   
	   Lets do a quick and dirty mapping
	 */
	
	/* some sanity check */
	if (serial->num_ports < 2)
		return -1;
		
	/* port 0 now uses the modified endpoint Address */
	serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;

	return generic_startup(serial);
}

static void visor_shutdown (struct usb_serial *serial)
{
Pete Zaitcev's avatar
Pete Zaitcev committed
918 919 920
	struct visor_private *priv;
	int i;

Linus Torvalds's avatar
Linus Torvalds committed
921
	dbg("%s", __FUNCTION__);
Pete Zaitcev's avatar
Pete Zaitcev committed
922 923 924 925 926 927 928 929

	for (i = 0; i < serial->num_ports; i++) {
		priv = usb_get_serial_port_data(serial->port[i]);
		if (priv) {
			usb_set_serial_port_data(serial->port[i], NULL);
			kfree(priv);
		}
	}
Linus Torvalds's avatar
Linus Torvalds committed
930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
}

static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
{
	dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);

	return -ENOIOCTLCMD;
}

static int __init visor_init (void)
{
	int i, retval;
	/* Only if parameters were passed to us */
	if ((vendor>0) && (product>0)) {
		struct usb_device_id usb_dev_temp[]=
			{{USB_DEVICE(vendor, product),
			.driver_info = (kernel_ulong_t)&palm_os_4_probe }};

		/* Find the last entry in id_table */
		for (i=0; ; i++) {
			if (id_table[i].idVendor==0) {
				id_table[i] = usb_dev_temp[0];
				break;
			}
		}
		/* Find the last entry in id_table_combined */
		for (i=0; ; i++) {
			if (id_table_combined[i].idVendor==0) {
				id_table_combined[i] = usb_dev_temp[0];
				break;
			}
		}
		info("Untested USB device specified at time of module insertion");
		info("Warning: This is not guaranteed to work");
		info("Using a newer kernel is preferred to this method");
		info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
			vendor, product);
	}
	retval = usb_serial_register(&handspring_device);
	if (retval)
		goto failed_handspring_register;
	retval = usb_serial_register(&clie_3_5_device);
	if (retval)
		goto failed_clie_3_5_register;
	retval = usb_serial_register(&clie_5_device);
	if (retval)
		goto failed_clie_5_register;
	retval = usb_register(&visor_driver);
	if (retval) 
		goto failed_usb_register;
980
	info(DRIVER_DESC);
Linus Torvalds's avatar
Linus Torvalds committed
981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019

	return 0;
failed_usb_register:
	usb_serial_deregister(&clie_5_device);
failed_clie_5_register:
	usb_serial_deregister(&clie_3_5_device);
failed_clie_3_5_register:
	usb_serial_deregister(&handspring_device);
failed_handspring_register:
	return retval;
}


static void __exit visor_exit (void)
{
	usb_deregister (&visor_driver);
	usb_serial_deregister (&handspring_device);
	usb_serial_deregister (&clie_3_5_device);
	usb_serial_deregister (&clie_5_device);
}


module_init(visor_init);
module_exit(visor_exit);

MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");

module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
module_param(stats, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(stats, "Enables statistics or not");

module_param(vendor, ushort, 0);
MODULE_PARM_DESC(vendor, "User specified vendor ID");
module_param(product, ushort, 0);
MODULE_PARM_DESC(product, "User specified product ID");