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Merge branch 'drm-nouveau-fixes-3.8' of git://anongit.freedesktop.org/git/nouveau...
[deliverable/linux.git] / drivers / usb / serial / io_ti.c
1 /*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14 *
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/jiffies.h>
22 #include <linux/errno.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/tty.h>
26 #include <linux/tty_driver.h>
27 #include <linux/tty_flip.h>
28 #include <linux/module.h>
29 #include <linux/spinlock.h>
30 #include <linux/mutex.h>
31 #include <linux/serial.h>
32 #include <linux/kfifo.h>
33 #include <linux/ioctl.h>
34 #include <linux/firmware.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
38
39 #include "io_16654.h"
40 #include "io_usbvend.h"
41 #include "io_ti.h"
42
43 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
44 #define DRIVER_DESC "Edgeport USB Serial Driver"
45
46 #define EPROM_PAGE_SIZE 64
47
48
49 /* different hardware types */
50 #define HARDWARE_TYPE_930 0
51 #define HARDWARE_TYPE_TIUMP 1
52
53 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
54 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
55 #define TI_MODE_BOOT 1 /* Staying in boot mode */
56 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
57 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
58 transitioning to download mode */
59
60 /* read urb state */
61 #define EDGE_READ_URB_RUNNING 0
62 #define EDGE_READ_URB_STOPPING 1
63 #define EDGE_READ_URB_STOPPED 2
64
65 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
66
67 #define EDGE_OUT_BUF_SIZE 1024
68
69
70 /* Product information read from the Edgeport */
71 struct product_info {
72 int TiMode; /* Current TI Mode */
73 __u8 hardware_type; /* Type of hardware */
74 } __attribute__((packed));
75
76 struct edgeport_port {
77 __u16 uart_base;
78 __u16 dma_address;
79 __u8 shadow_msr;
80 __u8 shadow_mcr;
81 __u8 shadow_lsr;
82 __u8 lsr_mask;
83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
84 wait without data before completing
85 a read short */
86 int baud_rate;
87 int close_pending;
88 int lsr_event;
89 struct async_icount icount;
90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
91 waiting for msr change to
92 happen */
93 struct edgeport_serial *edge_serial;
94 struct usb_serial_port *port;
95 __u8 bUartMode; /* Port type, 0: RS232, etc. */
96 spinlock_t ep_lock;
97 int ep_read_urb_state;
98 int ep_write_urb_in_use;
99 struct kfifo write_fifo;
100 };
101
102 struct edgeport_serial {
103 struct product_info product_info;
104 u8 TI_I2C_Type; /* Type of I2C in UMP */
105 u8 TiReadI2C; /* Set to TRUE if we have read the
106 I2c in Boot Mode */
107 struct mutex es_lock;
108 int num_ports_open;
109 struct usb_serial *serial;
110 };
111
112
113 /* Devices that this driver supports */
114 static const struct usb_device_id edgeport_1port_id_table[] = {
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
131 { }
132 };
133
134 static const struct usb_device_id edgeport_2port_id_table[] = {
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
153 { }
154 };
155
156 /* Devices that this driver supports */
157 static const struct usb_device_id id_table_combined[] = {
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
191 { }
192 };
193
194 MODULE_DEVICE_TABLE(usb, id_table_combined);
195
196 static unsigned char OperationalMajorVersion;
197 static unsigned char OperationalMinorVersion;
198 static unsigned short OperationalBuildNumber;
199
200 static int closing_wait = EDGE_CLOSING_WAIT;
201 static bool ignore_cpu_rev;
202 static int default_uart_mode; /* RS232 */
203
204 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
205 unsigned char *data, int length);
206
207 static void stop_read(struct edgeport_port *edge_port);
208 static int restart_read(struct edgeport_port *edge_port);
209
210 static void edge_set_termios(struct tty_struct *tty,
211 struct usb_serial_port *port, struct ktermios *old_termios);
212 static void edge_send(struct tty_struct *tty);
213
214 /* sysfs attributes */
215 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
216 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
217
218
219 static int ti_vread_sync(struct usb_device *dev, __u8 request,
220 __u16 value, __u16 index, u8 *data, int size)
221 {
222 int status;
223
224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
226 value, index, data, size, 1000);
227 if (status < 0)
228 return status;
229 if (status != size) {
230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
231 __func__, size, status);
232 return -ECOMM;
233 }
234 return 0;
235 }
236
237 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
238 __u16 value, __u16 index, u8 *data, int size)
239 {
240 int status;
241
242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
244 value, index, data, size, 1000);
245 if (status < 0)
246 return status;
247 if (status != size) {
248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
249 __func__, size, status);
250 return -ECOMM;
251 }
252 return 0;
253 }
254
255 static int send_cmd(struct usb_device *dev, __u8 command,
256 __u8 moduleid, __u16 value, u8 *data,
257 int size)
258 {
259 return ti_vsend_sync(dev, command, value, moduleid, data, size);
260 }
261
262 /* clear tx/rx buffers and fifo in TI UMP */
263 static int purge_port(struct usb_serial_port *port, __u16 mask)
264 {
265 int port_number = port->number - port->serial->minor;
266
267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
268
269 return send_cmd(port->serial->dev,
270 UMPC_PURGE_PORT,
271 (__u8)(UMPM_UART1_PORT + port_number),
272 mask,
273 NULL,
274 0);
275 }
276
277 /**
278 * read_download_mem - Read edgeport memory from TI chip
279 * @dev: usb device pointer
280 * @start_address: Device CPU address at which to read
281 * @length: Length of above data
282 * @address_type: Can read both XDATA and I2C
283 * @buffer: pointer to input data buffer
284 */
285 static int read_download_mem(struct usb_device *dev, int start_address,
286 int length, __u8 address_type, __u8 *buffer)
287 {
288 int status = 0;
289 __u8 read_length;
290 __be16 be_start_address;
291
292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
293
294 /* Read in blocks of 64 bytes
295 * (TI firmware can't handle more than 64 byte reads)
296 */
297 while (length) {
298 if (length > 64)
299 read_length = 64;
300 else
301 read_length = (__u8)length;
302
303 if (read_length > 1) {
304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
305 }
306 be_start_address = cpu_to_be16(start_address);
307 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
308 (__u16)address_type,
309 (__force __u16)be_start_address,
310 buffer, read_length);
311
312 if (status) {
313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
314 return status;
315 }
316
317 if (read_length > 1)
318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
319
320 /* Update pointers/length */
321 start_address += read_length;
322 buffer += read_length;
323 length -= read_length;
324 }
325
326 return status;
327 }
328
329 static int read_ram(struct usb_device *dev, int start_address,
330 int length, __u8 *buffer)
331 {
332 return read_download_mem(dev, start_address, length,
333 DTK_ADDR_SPACE_XDATA, buffer);
334 }
335
336 /* Read edgeport memory to a given block */
337 static int read_boot_mem(struct edgeport_serial *serial,
338 int start_address, int length, __u8 *buffer)
339 {
340 int status = 0;
341 int i;
342
343 for (i = 0; i < length; i++) {
344 status = ti_vread_sync(serial->serial->dev,
345 UMPC_MEMORY_READ, serial->TI_I2C_Type,
346 (__u16)(start_address+i), &buffer[i], 0x01);
347 if (status) {
348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
349 return status;
350 }
351 }
352
353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
354 __func__, start_address, length);
355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
356
357 serial->TiReadI2C = 1;
358
359 return status;
360 }
361
362 /* Write given block to TI EPROM memory */
363 static int write_boot_mem(struct edgeport_serial *serial,
364 int start_address, int length, __u8 *buffer)
365 {
366 int status = 0;
367 int i;
368 u8 *temp;
369
370 /* Must do a read before write */
371 if (!serial->TiReadI2C) {
372 temp = kmalloc(1, GFP_KERNEL);
373 if (!temp) {
374 dev_err(&serial->serial->dev->dev,
375 "%s - out of memory\n", __func__);
376 return -ENOMEM;
377 }
378 status = read_boot_mem(serial, 0, 1, temp);
379 kfree(temp);
380 if (status)
381 return status;
382 }
383
384 for (i = 0; i < length; ++i) {
385 status = ti_vsend_sync(serial->serial->dev,
386 UMPC_MEMORY_WRITE, buffer[i],
387 (__u16)(i + start_address), NULL, 0);
388 if (status)
389 return status;
390 }
391
392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
394
395 return status;
396 }
397
398
399 /* Write edgeport I2C memory to TI chip */
400 static int write_i2c_mem(struct edgeport_serial *serial,
401 int start_address, int length, __u8 address_type, __u8 *buffer)
402 {
403 struct device *dev = &serial->serial->dev->dev;
404 int status = 0;
405 int write_length;
406 __be16 be_start_address;
407
408 /* We can only send a maximum of 1 aligned byte page at a time */
409
410 /* calculate the number of bytes left in the first page */
411 write_length = EPROM_PAGE_SIZE -
412 (start_address & (EPROM_PAGE_SIZE - 1));
413
414 if (write_length > length)
415 write_length = length;
416
417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
418 __func__, start_address, write_length);
419 usb_serial_debug_data(dev, __func__, write_length, buffer);
420
421 /* Write first page */
422 be_start_address = cpu_to_be16(start_address);
423 status = ti_vsend_sync(serial->serial->dev,
424 UMPC_MEMORY_WRITE, (__u16)address_type,
425 (__force __u16)be_start_address,
426 buffer, write_length);
427 if (status) {
428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
429 return status;
430 }
431
432 length -= write_length;
433 start_address += write_length;
434 buffer += write_length;
435
436 /* We should be aligned now -- can write
437 max page size bytes at a time */
438 while (length) {
439 if (length > EPROM_PAGE_SIZE)
440 write_length = EPROM_PAGE_SIZE;
441 else
442 write_length = length;
443
444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
445 __func__, start_address, write_length);
446 usb_serial_debug_data(dev, __func__, write_length, buffer);
447
448 /* Write next page */
449 be_start_address = cpu_to_be16(start_address);
450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
451 (__u16)address_type,
452 (__force __u16)be_start_address,
453 buffer, write_length);
454 if (status) {
455 dev_err(dev, "%s - ERROR %d\n", __func__, status);
456 return status;
457 }
458
459 length -= write_length;
460 start_address += write_length;
461 buffer += write_length;
462 }
463 return status;
464 }
465
466 /* Examine the UMP DMA registers and LSR
467 *
468 * Check the MSBit of the X and Y DMA byte count registers.
469 * A zero in this bit indicates that the TX DMA buffers are empty
470 * then check the TX Empty bit in the UART.
471 */
472 static int tx_active(struct edgeport_port *port)
473 {
474 int status;
475 struct out_endpoint_desc_block *oedb;
476 __u8 *lsr;
477 int bytes_left = 0;
478
479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
480 if (!oedb) {
481 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
482 return -ENOMEM;
483 }
484
485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
486 as not all platforms can do DMA
487 from stack */
488 if (!lsr) {
489 kfree(oedb);
490 return -ENOMEM;
491 }
492 /* Read the DMA Count Registers */
493 status = read_ram(port->port->serial->dev, port->dma_address,
494 sizeof(*oedb), (void *)oedb);
495 if (status)
496 goto exit_is_tx_active;
497
498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
499
500 /* and the LSR */
501 status = read_ram(port->port->serial->dev,
502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
503
504 if (status)
505 goto exit_is_tx_active;
506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
507
508 /* If either buffer has data or we are transmitting then return TRUE */
509 if ((oedb->XByteCount & 0x80) != 0)
510 bytes_left += 64;
511
512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
513 bytes_left += 1;
514
515 /* We return Not Active if we get any kind of error */
516 exit_is_tx_active:
517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
518
519 kfree(lsr);
520 kfree(oedb);
521 return bytes_left;
522 }
523
524 static void chase_port(struct edgeport_port *port, unsigned long timeout,
525 int flush)
526 {
527 int baud_rate;
528 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
529 struct usb_serial *serial = port->port->serial;
530 wait_queue_t wait;
531 unsigned long flags;
532
533 if (!tty)
534 return;
535
536 if (!timeout)
537 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
538
539 /* wait for data to drain from the buffer */
540 spin_lock_irqsave(&port->ep_lock, flags);
541 init_waitqueue_entry(&wait, current);
542 add_wait_queue(&tty->write_wait, &wait);
543 for (;;) {
544 set_current_state(TASK_INTERRUPTIBLE);
545 if (kfifo_len(&port->write_fifo) == 0
546 || timeout == 0 || signal_pending(current)
547 || serial->disconnected)
548 /* disconnect */
549 break;
550 spin_unlock_irqrestore(&port->ep_lock, flags);
551 timeout = schedule_timeout(timeout);
552 spin_lock_irqsave(&port->ep_lock, flags);
553 }
554 set_current_state(TASK_RUNNING);
555 remove_wait_queue(&tty->write_wait, &wait);
556 if (flush)
557 kfifo_reset_out(&port->write_fifo);
558 spin_unlock_irqrestore(&port->ep_lock, flags);
559 tty_kref_put(tty);
560
561 /* wait for data to drain from the device */
562 timeout += jiffies;
563 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
564 && !serial->disconnected) {
565 /* not disconnected */
566 if (!tx_active(port))
567 break;
568 msleep(10);
569 }
570
571 /* disconnected */
572 if (serial->disconnected)
573 return;
574
575 /* wait one more character time, based on baud rate */
576 /* (tx_active doesn't seem to wait for the last byte) */
577 baud_rate = port->baud_rate;
578 if (baud_rate == 0)
579 baud_rate = 50;
580 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
581 }
582
583 static int choose_config(struct usb_device *dev)
584 {
585 /*
586 * There may be multiple configurations on this device, in which case
587 * we would need to read and parse all of them to find out which one
588 * we want. However, we just support one config at this point,
589 * configuration # 1, which is Config Descriptor 0.
590 */
591
592 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
593 __func__, dev->config->desc.bNumInterfaces);
594 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
595 __func__, dev->config->desc.bMaxPower * 2);
596
597 if (dev->config->desc.bNumInterfaces != 1) {
598 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
599 return -ENODEV;
600 }
601
602 return 0;
603 }
604
605 static int read_rom(struct edgeport_serial *serial,
606 int start_address, int length, __u8 *buffer)
607 {
608 int status;
609
610 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
611 status = read_download_mem(serial->serial->dev,
612 start_address,
613 length,
614 serial->TI_I2C_Type,
615 buffer);
616 } else {
617 status = read_boot_mem(serial, start_address, length,
618 buffer);
619 }
620 return status;
621 }
622
623 static int write_rom(struct edgeport_serial *serial, int start_address,
624 int length, __u8 *buffer)
625 {
626 if (serial->product_info.TiMode == TI_MODE_BOOT)
627 return write_boot_mem(serial, start_address, length,
628 buffer);
629
630 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
631 return write_i2c_mem(serial, start_address, length,
632 serial->TI_I2C_Type, buffer);
633 return -EINVAL;
634 }
635
636
637
638 /* Read a descriptor header from I2C based on type */
639 static int get_descriptor_addr(struct edgeport_serial *serial,
640 int desc_type, struct ti_i2c_desc *rom_desc)
641 {
642 int start_address;
643 int status;
644
645 /* Search for requested descriptor in I2C */
646 start_address = 2;
647 do {
648 status = read_rom(serial,
649 start_address,
650 sizeof(struct ti_i2c_desc),
651 (__u8 *)rom_desc);
652 if (status)
653 return 0;
654
655 if (rom_desc->Type == desc_type)
656 return start_address;
657
658 start_address = start_address + sizeof(struct ti_i2c_desc)
659 + rom_desc->Size;
660
661 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
662
663 return 0;
664 }
665
666 /* Validate descriptor checksum */
667 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
668 {
669 __u16 i;
670 __u8 cs = 0;
671
672 for (i = 0; i < rom_desc->Size; i++)
673 cs = (__u8)(cs + buffer[i]);
674
675 if (cs != rom_desc->CheckSum) {
676 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
677 return -EINVAL;
678 }
679 return 0;
680 }
681
682 /* Make sure that the I2C image is good */
683 static int check_i2c_image(struct edgeport_serial *serial)
684 {
685 struct device *dev = &serial->serial->dev->dev;
686 int status = 0;
687 struct ti_i2c_desc *rom_desc;
688 int start_address = 2;
689 __u8 *buffer;
690 __u16 ttype;
691
692 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
693 if (!rom_desc) {
694 dev_err(dev, "%s - out of memory\n", __func__);
695 return -ENOMEM;
696 }
697 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
698 if (!buffer) {
699 dev_err(dev, "%s - out of memory when allocating buffer\n",
700 __func__);
701 kfree(rom_desc);
702 return -ENOMEM;
703 }
704
705 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
706 status = read_rom(serial, 0, 1, buffer);
707 if (status)
708 goto out;
709
710 if (*buffer != UMP5152 && *buffer != UMP3410) {
711 dev_err(dev, "%s - invalid buffer signature\n", __func__);
712 status = -ENODEV;
713 goto out;
714 }
715
716 do {
717 /* Validate the I2C */
718 status = read_rom(serial,
719 start_address,
720 sizeof(struct ti_i2c_desc),
721 (__u8 *)rom_desc);
722 if (status)
723 break;
724
725 if ((start_address + sizeof(struct ti_i2c_desc) +
726 rom_desc->Size) > TI_MAX_I2C_SIZE) {
727 status = -ENODEV;
728 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
729 break;
730 }
731
732 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
733
734 /* Skip type 2 record */
735 ttype = rom_desc->Type & 0x0f;
736 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
737 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
738 /* Read the descriptor data */
739 status = read_rom(serial, start_address +
740 sizeof(struct ti_i2c_desc),
741 rom_desc->Size, buffer);
742 if (status)
743 break;
744
745 status = valid_csum(rom_desc, buffer);
746 if (status)
747 break;
748 }
749 start_address = start_address + sizeof(struct ti_i2c_desc) +
750 rom_desc->Size;
751
752 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
753 (start_address < TI_MAX_I2C_SIZE));
754
755 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
756 (start_address > TI_MAX_I2C_SIZE))
757 status = -ENODEV;
758
759 out:
760 kfree(buffer);
761 kfree(rom_desc);
762 return status;
763 }
764
765 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
766 {
767 int status;
768 int start_address;
769 struct ti_i2c_desc *rom_desc;
770 struct edge_ti_manuf_descriptor *desc;
771 struct device *dev = &serial->serial->dev->dev;
772
773 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
774 if (!rom_desc) {
775 dev_err(dev, "%s - out of memory\n", __func__);
776 return -ENOMEM;
777 }
778 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
779 rom_desc);
780
781 if (!start_address) {
782 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
783 status = -ENODEV;
784 goto exit;
785 }
786
787 /* Read the descriptor data */
788 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
789 rom_desc->Size, buffer);
790 if (status)
791 goto exit;
792
793 status = valid_csum(rom_desc, buffer);
794
795 desc = (struct edge_ti_manuf_descriptor *)buffer;
796 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
797 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
798 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
799 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
800 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
801 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
802
803 exit:
804 kfree(rom_desc);
805 return status;
806 }
807
808 /* Build firmware header used for firmware update */
809 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
810 {
811 __u8 *buffer;
812 int buffer_size;
813 int i;
814 int err;
815 __u8 cs = 0;
816 struct ti_i2c_desc *i2c_header;
817 struct ti_i2c_image_header *img_header;
818 struct ti_i2c_firmware_rec *firmware_rec;
819 const struct firmware *fw;
820 const char *fw_name = "edgeport/down3.bin";
821
822 /* In order to update the I2C firmware we must change the type 2 record
823 * to type 0xF2. This will force the UMP to come up in Boot Mode.
824 * Then while in boot mode, the driver will download the latest
825 * firmware (padded to 15.5k) into the UMP ram. And finally when the
826 * device comes back up in download mode the driver will cause the new
827 * firmware to be copied from the UMP Ram to I2C and the firmware will
828 * update the record type from 0xf2 to 0x02.
829 */
830
831 /* Allocate a 15.5k buffer + 2 bytes for version number
832 * (Firmware Record) */
833 buffer_size = (((1024 * 16) - 512 ) +
834 sizeof(struct ti_i2c_firmware_rec));
835
836 buffer = kmalloc(buffer_size, GFP_KERNEL);
837 if (!buffer) {
838 dev_err(dev, "%s - out of memory\n", __func__);
839 return -ENOMEM;
840 }
841
842 // Set entire image of 0xffs
843 memset(buffer, 0xff, buffer_size);
844
845 err = request_firmware(&fw, fw_name, dev);
846 if (err) {
847 dev_err(dev, "Failed to load image \"%s\" err %d\n",
848 fw_name, err);
849 kfree(buffer);
850 return err;
851 }
852
853 /* Save Download Version Number */
854 OperationalMajorVersion = fw->data[0];
855 OperationalMinorVersion = fw->data[1];
856 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
857
858 /* Copy version number into firmware record */
859 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
860
861 firmware_rec->Ver_Major = OperationalMajorVersion;
862 firmware_rec->Ver_Minor = OperationalMinorVersion;
863
864 /* Pointer to fw_down memory image */
865 img_header = (struct ti_i2c_image_header *)&fw->data[4];
866
867 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
868 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
869 le16_to_cpu(img_header->Length));
870
871 release_firmware(fw);
872
873 for (i=0; i < buffer_size; i++) {
874 cs = (__u8)(cs + buffer[i]);
875 }
876
877 kfree(buffer);
878
879 /* Build new header */
880 i2c_header = (struct ti_i2c_desc *)header;
881 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
882
883 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
884 i2c_header->Size = (__u16)buffer_size;
885 i2c_header->CheckSum = cs;
886 firmware_rec->Ver_Major = OperationalMajorVersion;
887 firmware_rec->Ver_Minor = OperationalMinorVersion;
888
889 return 0;
890 }
891
892 /* Try to figure out what type of I2c we have */
893 static int i2c_type_bootmode(struct edgeport_serial *serial)
894 {
895 struct device *dev = &serial->serial->dev->dev;
896 int status;
897 u8 *data;
898
899 data = kmalloc(1, GFP_KERNEL);
900 if (!data) {
901 dev_err(dev, "%s - out of memory\n", __func__);
902 return -ENOMEM;
903 }
904
905 /* Try to read type 2 */
906 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
907 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
908 if (status)
909 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
910 else
911 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
912 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
913 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
914 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
915 goto out;
916 }
917
918 /* Try to read type 3 */
919 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
920 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
921 if (status)
922 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
923 else
924 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
925 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
926 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
927 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
928 goto out;
929 }
930
931 dev_dbg(dev, "%s - Unknown\n", __func__);
932 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
933 status = -ENODEV;
934 out:
935 kfree(data);
936 return status;
937 }
938
939 static int bulk_xfer(struct usb_serial *serial, void *buffer,
940 int length, int *num_sent)
941 {
942 int status;
943
944 status = usb_bulk_msg(serial->dev,
945 usb_sndbulkpipe(serial->dev,
946 serial->port[0]->bulk_out_endpointAddress),
947 buffer, length, num_sent, 1000);
948 return status;
949 }
950
951 /* Download given firmware image to the device (IN BOOT MODE) */
952 static int download_code(struct edgeport_serial *serial, __u8 *image,
953 int image_length)
954 {
955 int status = 0;
956 int pos;
957 int transfer;
958 int done;
959
960 /* Transfer firmware image */
961 for (pos = 0; pos < image_length; ) {
962 /* Read the next buffer from file */
963 transfer = image_length - pos;
964 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
965 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
966
967 /* Transfer data */
968 status = bulk_xfer(serial->serial, &image[pos],
969 transfer, &done);
970 if (status)
971 break;
972 /* Advance buffer pointer */
973 pos += done;
974 }
975
976 return status;
977 }
978
979 /* FIXME!!! */
980 static int config_boot_dev(struct usb_device *dev)
981 {
982 return 0;
983 }
984
985 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
986 {
987 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
988 }
989
990 /**
991 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
992 *
993 * This routine downloads the main operating code into the TI5052, using the
994 * boot code already burned into E2PROM or ROM.
995 */
996 static int download_fw(struct edgeport_serial *serial)
997 {
998 struct device *dev = &serial->serial->dev->dev;
999 int status = 0;
1000 int start_address;
1001 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1002 struct usb_interface_descriptor *interface;
1003 int download_cur_ver;
1004 int download_new_ver;
1005
1006 /* This routine is entered by both the BOOT mode and the Download mode
1007 * We can determine which code is running by the reading the config
1008 * descriptor and if we have only one bulk pipe it is in boot mode
1009 */
1010 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1011
1012 /* Default to type 2 i2c */
1013 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1014
1015 status = choose_config(serial->serial->dev);
1016 if (status)
1017 return status;
1018
1019 interface = &serial->serial->interface->cur_altsetting->desc;
1020 if (!interface) {
1021 dev_err(dev, "%s - no interface set, error!\n", __func__);
1022 return -ENODEV;
1023 }
1024
1025 /*
1026 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1027 * if we have more than one endpoint we are definitely in download
1028 * mode
1029 */
1030 if (interface->bNumEndpoints > 1)
1031 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1032 else
1033 /* Otherwise we will remain in configuring mode */
1034 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1035
1036 /********************************************************************/
1037 /* Download Mode */
1038 /********************************************************************/
1039 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1040 struct ti_i2c_desc *rom_desc;
1041
1042 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1043
1044 status = check_i2c_image(serial);
1045 if (status) {
1046 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1047 return status;
1048 }
1049
1050 /* Validate Hardware version number
1051 * Read Manufacturing Descriptor from TI Based Edgeport
1052 */
1053 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1054 if (!ti_manuf_desc) {
1055 dev_err(dev, "%s - out of memory.\n", __func__);
1056 return -ENOMEM;
1057 }
1058 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1059 if (status) {
1060 kfree(ti_manuf_desc);
1061 return status;
1062 }
1063
1064 /* Check version number of ION descriptor */
1065 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1066 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1067 __func__, ti_cpu_rev(ti_manuf_desc));
1068 kfree(ti_manuf_desc);
1069 return -EINVAL;
1070 }
1071
1072 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1073 if (!rom_desc) {
1074 dev_err(dev, "%s - out of memory.\n", __func__);
1075 kfree(ti_manuf_desc);
1076 return -ENOMEM;
1077 }
1078
1079 /* Search for type 2 record (firmware record) */
1080 start_address = get_descriptor_addr(serial,
1081 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1082 if (start_address != 0) {
1083 struct ti_i2c_firmware_rec *firmware_version;
1084 u8 *record;
1085
1086 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1087
1088 firmware_version = kmalloc(sizeof(*firmware_version),
1089 GFP_KERNEL);
1090 if (!firmware_version) {
1091 dev_err(dev, "%s - out of memory.\n", __func__);
1092 kfree(rom_desc);
1093 kfree(ti_manuf_desc);
1094 return -ENOMEM;
1095 }
1096
1097 /* Validate version number
1098 * Read the descriptor data
1099 */
1100 status = read_rom(serial, start_address +
1101 sizeof(struct ti_i2c_desc),
1102 sizeof(struct ti_i2c_firmware_rec),
1103 (__u8 *)firmware_version);
1104 if (status) {
1105 kfree(firmware_version);
1106 kfree(rom_desc);
1107 kfree(ti_manuf_desc);
1108 return status;
1109 }
1110
1111 /* Check version number of download with current
1112 version in I2c */
1113 download_cur_ver = (firmware_version->Ver_Major << 8) +
1114 (firmware_version->Ver_Minor);
1115 download_new_ver = (OperationalMajorVersion << 8) +
1116 (OperationalMinorVersion);
1117
1118 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1119 __func__, firmware_version->Ver_Major,
1120 firmware_version->Ver_Minor,
1121 OperationalMajorVersion,
1122 OperationalMinorVersion);
1123
1124 /* Check if we have an old version in the I2C and
1125 update if necessary */
1126 if (download_cur_ver < download_new_ver) {
1127 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1128 __func__,
1129 firmware_version->Ver_Major,
1130 firmware_version->Ver_Minor,
1131 OperationalMajorVersion,
1132 OperationalMinorVersion);
1133
1134 record = kmalloc(1, GFP_KERNEL);
1135 if (!record) {
1136 dev_err(dev, "%s - out of memory.\n",
1137 __func__);
1138 kfree(firmware_version);
1139 kfree(rom_desc);
1140 kfree(ti_manuf_desc);
1141 return -ENOMEM;
1142 }
1143 /* In order to update the I2C firmware we must
1144 * change the type 2 record to type 0xF2. This
1145 * will force the UMP to come up in Boot Mode.
1146 * Then while in boot mode, the driver will
1147 * download the latest firmware (padded to
1148 * 15.5k) into the UMP ram. Finally when the
1149 * device comes back up in download mode the
1150 * driver will cause the new firmware to be
1151 * copied from the UMP Ram to I2C and the
1152 * firmware will update the record type from
1153 * 0xf2 to 0x02.
1154 */
1155 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1156
1157 /* Change the I2C Firmware record type to
1158 0xf2 to trigger an update */
1159 status = write_rom(serial, start_address,
1160 sizeof(*record), record);
1161 if (status) {
1162 kfree(record);
1163 kfree(firmware_version);
1164 kfree(rom_desc);
1165 kfree(ti_manuf_desc);
1166 return status;
1167 }
1168
1169 /* verify the write -- must do this in order
1170 * for write to complete before we do the
1171 * hardware reset
1172 */
1173 status = read_rom(serial,
1174 start_address,
1175 sizeof(*record),
1176 record);
1177 if (status) {
1178 kfree(record);
1179 kfree(firmware_version);
1180 kfree(rom_desc);
1181 kfree(ti_manuf_desc);
1182 return status;
1183 }
1184
1185 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1186 dev_err(dev, "%s - error resetting device\n", __func__);
1187 kfree(record);
1188 kfree(firmware_version);
1189 kfree(rom_desc);
1190 kfree(ti_manuf_desc);
1191 return -ENODEV;
1192 }
1193
1194 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1195
1196 /* Reset UMP -- Back to BOOT MODE */
1197 status = ti_vsend_sync(serial->serial->dev,
1198 UMPC_HARDWARE_RESET,
1199 0, 0, NULL, 0);
1200
1201 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1202
1203 /* return an error on purpose. */
1204 kfree(record);
1205 kfree(firmware_version);
1206 kfree(rom_desc);
1207 kfree(ti_manuf_desc);
1208 return -ENODEV;
1209 }
1210 kfree(firmware_version);
1211 }
1212 /* Search for type 0xF2 record (firmware blank record) */
1213 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1214 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1215 sizeof(struct ti_i2c_firmware_rec))
1216 __u8 *header;
1217 __u8 *vheader;
1218
1219 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1220 if (!header) {
1221 dev_err(dev, "%s - out of memory.\n", __func__);
1222 kfree(rom_desc);
1223 kfree(ti_manuf_desc);
1224 return -ENOMEM;
1225 }
1226
1227 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1228 if (!vheader) {
1229 dev_err(dev, "%s - out of memory.\n", __func__);
1230 kfree(header);
1231 kfree(rom_desc);
1232 kfree(ti_manuf_desc);
1233 return -ENOMEM;
1234 }
1235
1236 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1237
1238 /*
1239 * In order to update the I2C firmware we must change
1240 * the type 2 record to type 0xF2. This will force the
1241 * UMP to come up in Boot Mode. Then while in boot
1242 * mode, the driver will download the latest firmware
1243 * (padded to 15.5k) into the UMP ram. Finally when the
1244 * device comes back up in download mode the driver
1245 * will cause the new firmware to be copied from the
1246 * UMP Ram to I2C and the firmware will update the
1247 * record type from 0xf2 to 0x02.
1248 */
1249 status = build_i2c_fw_hdr(header, dev);
1250 if (status) {
1251 kfree(vheader);
1252 kfree(header);
1253 kfree(rom_desc);
1254 kfree(ti_manuf_desc);
1255 return -EINVAL;
1256 }
1257
1258 /* Update I2C with type 0xf2 record with correct
1259 size and checksum */
1260 status = write_rom(serial,
1261 start_address,
1262 HEADER_SIZE,
1263 header);
1264 if (status) {
1265 kfree(vheader);
1266 kfree(header);
1267 kfree(rom_desc);
1268 kfree(ti_manuf_desc);
1269 return -EINVAL;
1270 }
1271
1272 /* verify the write -- must do this in order for
1273 write to complete before we do the hardware reset */
1274 status = read_rom(serial, start_address,
1275 HEADER_SIZE, vheader);
1276
1277 if (status) {
1278 dev_dbg(dev, "%s - can't read header back\n", __func__);
1279 kfree(vheader);
1280 kfree(header);
1281 kfree(rom_desc);
1282 kfree(ti_manuf_desc);
1283 return status;
1284 }
1285 if (memcmp(vheader, header, HEADER_SIZE)) {
1286 dev_dbg(dev, "%s - write download record failed\n", __func__);
1287 kfree(vheader);
1288 kfree(header);
1289 kfree(rom_desc);
1290 kfree(ti_manuf_desc);
1291 return -EINVAL;
1292 }
1293
1294 kfree(vheader);
1295 kfree(header);
1296
1297 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1298
1299 /* Tell firmware to copy download image into I2C */
1300 status = ti_vsend_sync(serial->serial->dev,
1301 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1302
1303 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1304 if (status) {
1305 dev_err(dev,
1306 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1307 __func__);
1308 kfree(rom_desc);
1309 kfree(ti_manuf_desc);
1310 return status;
1311 }
1312 }
1313
1314 // The device is running the download code
1315 kfree(rom_desc);
1316 kfree(ti_manuf_desc);
1317 return 0;
1318 }
1319
1320 /********************************************************************/
1321 /* Boot Mode */
1322 /********************************************************************/
1323 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1324
1325 /* Configure the TI device so we can use the BULK pipes for download */
1326 status = config_boot_dev(serial->serial->dev);
1327 if (status)
1328 return status;
1329
1330 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1331 != USB_VENDOR_ID_ION) {
1332 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1333 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1334 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1335 goto stayinbootmode;
1336 }
1337
1338 /* We have an ION device (I2c Must be programmed)
1339 Determine I2C image type */
1340 if (i2c_type_bootmode(serial))
1341 goto stayinbootmode;
1342
1343 /* Check for ION Vendor ID and that the I2C is valid */
1344 if (!check_i2c_image(serial)) {
1345 struct ti_i2c_image_header *header;
1346 int i;
1347 __u8 cs = 0;
1348 __u8 *buffer;
1349 int buffer_size;
1350 int err;
1351 const struct firmware *fw;
1352 const char *fw_name = "edgeport/down3.bin";
1353
1354 /* Validate Hardware version number
1355 * Read Manufacturing Descriptor from TI Based Edgeport
1356 */
1357 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1358 if (!ti_manuf_desc) {
1359 dev_err(dev, "%s - out of memory.\n", __func__);
1360 return -ENOMEM;
1361 }
1362 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1363 if (status) {
1364 kfree(ti_manuf_desc);
1365 goto stayinbootmode;
1366 }
1367
1368 /* Check for version 2 */
1369 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1370 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1371 __func__, ti_cpu_rev(ti_manuf_desc));
1372 kfree(ti_manuf_desc);
1373 goto stayinbootmode;
1374 }
1375
1376 kfree(ti_manuf_desc);
1377
1378 /*
1379 * In order to update the I2C firmware we must change the type
1380 * 2 record to type 0xF2. This will force the UMP to come up
1381 * in Boot Mode. Then while in boot mode, the driver will
1382 * download the latest firmware (padded to 15.5k) into the
1383 * UMP ram. Finally when the device comes back up in download
1384 * mode the driver will cause the new firmware to be copied
1385 * from the UMP Ram to I2C and the firmware will update the
1386 * record type from 0xf2 to 0x02.
1387 *
1388 * Do we really have to copy the whole firmware image,
1389 * or could we do this in place!
1390 */
1391
1392 /* Allocate a 15.5k buffer + 3 byte header */
1393 buffer_size = (((1024 * 16) - 512) +
1394 sizeof(struct ti_i2c_image_header));
1395 buffer = kmalloc(buffer_size, GFP_KERNEL);
1396 if (!buffer) {
1397 dev_err(dev, "%s - out of memory\n", __func__);
1398 return -ENOMEM;
1399 }
1400
1401 /* Initialize the buffer to 0xff (pad the buffer) */
1402 memset(buffer, 0xff, buffer_size);
1403
1404 err = request_firmware(&fw, fw_name, dev);
1405 if (err) {
1406 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1407 fw_name, err);
1408 kfree(buffer);
1409 return err;
1410 }
1411 memcpy(buffer, &fw->data[4], fw->size - 4);
1412 release_firmware(fw);
1413
1414 for (i = sizeof(struct ti_i2c_image_header);
1415 i < buffer_size; i++) {
1416 cs = (__u8)(cs + buffer[i]);
1417 }
1418
1419 header = (struct ti_i2c_image_header *)buffer;
1420
1421 /* update length and checksum after padding */
1422 header->Length = cpu_to_le16((__u16)(buffer_size -
1423 sizeof(struct ti_i2c_image_header)));
1424 header->CheckSum = cs;
1425
1426 /* Download the operational code */
1427 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1428 status = download_code(serial, buffer, buffer_size);
1429
1430 kfree(buffer);
1431
1432 if (status) {
1433 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1434 return status;
1435 }
1436
1437 /* Device will reboot */
1438 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1439
1440 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1441
1442 /* return an error on purpose */
1443 return -ENODEV;
1444 }
1445
1446 stayinbootmode:
1447 /* Eprom is invalid or blank stay in boot mode */
1448 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1449 serial->product_info.TiMode = TI_MODE_BOOT;
1450
1451 return 0;
1452 }
1453
1454
1455 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1456 {
1457 int port_number = port->port->number - port->port->serial->minor;
1458 on = !!on; /* 1 or 0 not bitmask */
1459 return send_cmd(port->port->serial->dev,
1460 feature, (__u8)(UMPM_UART1_PORT + port_number),
1461 on, NULL, 0);
1462 }
1463
1464
1465 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1466 {
1467 int status = 0;
1468
1469 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1470
1471 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1472 if (status)
1473 return status;
1474 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1475 if (status)
1476 return status;
1477 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1478 }
1479
1480 /* Convert TI LSR to standard UART flags */
1481 static __u8 map_line_status(__u8 ti_lsr)
1482 {
1483 __u8 lsr = 0;
1484
1485 #define MAP_FLAG(flagUmp, flagUart) \
1486 if (ti_lsr & flagUmp) \
1487 lsr |= flagUart;
1488
1489 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1490 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1491 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1492 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1493 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1494 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1495
1496 #undef MAP_FLAG
1497
1498 return lsr;
1499 }
1500
1501 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1502 {
1503 struct async_icount *icount;
1504 struct tty_struct *tty;
1505
1506 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1507
1508 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1509 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1510 icount = &edge_port->icount;
1511
1512 /* update input line counters */
1513 if (msr & EDGEPORT_MSR_DELTA_CTS)
1514 icount->cts++;
1515 if (msr & EDGEPORT_MSR_DELTA_DSR)
1516 icount->dsr++;
1517 if (msr & EDGEPORT_MSR_DELTA_CD)
1518 icount->dcd++;
1519 if (msr & EDGEPORT_MSR_DELTA_RI)
1520 icount->rng++;
1521 wake_up_interruptible(&edge_port->delta_msr_wait);
1522 }
1523
1524 /* Save the new modem status */
1525 edge_port->shadow_msr = msr & 0xf0;
1526
1527 tty = tty_port_tty_get(&edge_port->port->port);
1528 /* handle CTS flow control */
1529 if (tty && C_CRTSCTS(tty)) {
1530 if (msr & EDGEPORT_MSR_CTS) {
1531 tty->hw_stopped = 0;
1532 tty_wakeup(tty);
1533 } else {
1534 tty->hw_stopped = 1;
1535 }
1536 }
1537 tty_kref_put(tty);
1538 }
1539
1540 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1541 __u8 lsr, __u8 data)
1542 {
1543 struct async_icount *icount;
1544 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1545 LSR_FRM_ERR | LSR_BREAK));
1546 struct tty_struct *tty;
1547
1548 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1549
1550 edge_port->shadow_lsr = lsr;
1551
1552 if (new_lsr & LSR_BREAK)
1553 /*
1554 * Parity and Framing errors only count if they
1555 * occur exclusive of a break being received.
1556 */
1557 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1558
1559 /* Place LSR data byte into Rx buffer */
1560 if (lsr_data) {
1561 tty = tty_port_tty_get(&edge_port->port->port);
1562 if (tty) {
1563 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1564 tty_kref_put(tty);
1565 }
1566 }
1567
1568 /* update input line counters */
1569 icount = &edge_port->icount;
1570 if (new_lsr & LSR_BREAK)
1571 icount->brk++;
1572 if (new_lsr & LSR_OVER_ERR)
1573 icount->overrun++;
1574 if (new_lsr & LSR_PAR_ERR)
1575 icount->parity++;
1576 if (new_lsr & LSR_FRM_ERR)
1577 icount->frame++;
1578 }
1579
1580
1581 static void edge_interrupt_callback(struct urb *urb)
1582 {
1583 struct edgeport_serial *edge_serial = urb->context;
1584 struct usb_serial_port *port;
1585 struct edgeport_port *edge_port;
1586 struct device *dev;
1587 unsigned char *data = urb->transfer_buffer;
1588 int length = urb->actual_length;
1589 int port_number;
1590 int function;
1591 int retval;
1592 __u8 lsr;
1593 __u8 msr;
1594 int status = urb->status;
1595
1596 switch (status) {
1597 case 0:
1598 /* success */
1599 break;
1600 case -ECONNRESET:
1601 case -ENOENT:
1602 case -ESHUTDOWN:
1603 /* this urb is terminated, clean up */
1604 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1605 __func__, status);
1606 return;
1607 default:
1608 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1609 "%d\n", __func__, status);
1610 goto exit;
1611 }
1612
1613 if (!length) {
1614 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1615 goto exit;
1616 }
1617
1618 dev = &edge_serial->serial->dev->dev;
1619 usb_serial_debug_data(dev, __func__, length, data);
1620
1621 if (length != 2) {
1622 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1623 goto exit;
1624 }
1625
1626 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1627 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1628 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1629 port_number, function, data[1]);
1630 port = edge_serial->serial->port[port_number];
1631 edge_port = usb_get_serial_port_data(port);
1632 if (!edge_port) {
1633 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1634 return;
1635 }
1636 switch (function) {
1637 case TIUMP_INTERRUPT_CODE_LSR:
1638 lsr = map_line_status(data[1]);
1639 if (lsr & UMP_UART_LSR_DATA_MASK) {
1640 /* Save the LSR event for bulk read
1641 completion routine */
1642 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1643 __func__, port_number, lsr);
1644 edge_port->lsr_event = 1;
1645 edge_port->lsr_mask = lsr;
1646 } else {
1647 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1648 __func__, port_number, lsr);
1649 handle_new_lsr(edge_port, 0, lsr, 0);
1650 }
1651 break;
1652
1653 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1654 /* Copy MSR from UMP */
1655 msr = data[1];
1656 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1657 __func__, port_number, msr);
1658 handle_new_msr(edge_port, msr);
1659 break;
1660
1661 default:
1662 dev_err(&urb->dev->dev,
1663 "%s - Unknown Interrupt code from UMP %x\n",
1664 __func__, data[1]);
1665 break;
1666
1667 }
1668
1669 exit:
1670 retval = usb_submit_urb(urb, GFP_ATOMIC);
1671 if (retval)
1672 dev_err(&urb->dev->dev,
1673 "%s - usb_submit_urb failed with result %d\n",
1674 __func__, retval);
1675 }
1676
1677 static void edge_bulk_in_callback(struct urb *urb)
1678 {
1679 struct edgeport_port *edge_port = urb->context;
1680 struct device *dev = &edge_port->port->dev;
1681 unsigned char *data = urb->transfer_buffer;
1682 struct tty_struct *tty;
1683 int retval = 0;
1684 int port_number;
1685 int status = urb->status;
1686
1687 switch (status) {
1688 case 0:
1689 /* success */
1690 break;
1691 case -ECONNRESET:
1692 case -ENOENT:
1693 case -ESHUTDOWN:
1694 /* this urb is terminated, clean up */
1695 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1696 return;
1697 default:
1698 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1699 }
1700
1701 if (status == -EPIPE)
1702 goto exit;
1703
1704 if (status) {
1705 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1706 return;
1707 }
1708
1709 port_number = edge_port->port->number - edge_port->port->serial->minor;
1710
1711 if (edge_port->lsr_event) {
1712 edge_port->lsr_event = 0;
1713 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1714 __func__, port_number, edge_port->lsr_mask, *data);
1715 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1716 /* Adjust buffer length/pointer */
1717 --urb->actual_length;
1718 ++data;
1719 }
1720
1721 tty = tty_port_tty_get(&edge_port->port->port);
1722 if (tty && urb->actual_length) {
1723 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1724 if (edge_port->close_pending)
1725 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1726 __func__);
1727 else
1728 edge_tty_recv(dev, tty, data, urb->actual_length);
1729 edge_port->icount.rx += urb->actual_length;
1730 }
1731 tty_kref_put(tty);
1732
1733 exit:
1734 /* continue read unless stopped */
1735 spin_lock(&edge_port->ep_lock);
1736 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1737 retval = usb_submit_urb(urb, GFP_ATOMIC);
1738 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1739 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1740
1741 spin_unlock(&edge_port->ep_lock);
1742 if (retval)
1743 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1744 }
1745
1746 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1747 unsigned char *data, int length)
1748 {
1749 int queued;
1750
1751 queued = tty_insert_flip_string(tty, data, length);
1752 if (queued < length)
1753 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1754 __func__, length - queued);
1755 tty_flip_buffer_push(tty);
1756 }
1757
1758 static void edge_bulk_out_callback(struct urb *urb)
1759 {
1760 struct usb_serial_port *port = urb->context;
1761 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1762 int status = urb->status;
1763 struct tty_struct *tty;
1764
1765 edge_port->ep_write_urb_in_use = 0;
1766
1767 switch (status) {
1768 case 0:
1769 /* success */
1770 break;
1771 case -ECONNRESET:
1772 case -ENOENT:
1773 case -ESHUTDOWN:
1774 /* this urb is terminated, clean up */
1775 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1776 __func__, status);
1777 return;
1778 default:
1779 dev_err_console(port, "%s - nonzero write bulk status "
1780 "received: %d\n", __func__, status);
1781 }
1782
1783 /* send any buffered data */
1784 tty = tty_port_tty_get(&port->port);
1785 edge_send(tty);
1786 tty_kref_put(tty);
1787 }
1788
1789 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1790 {
1791 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1792 struct edgeport_serial *edge_serial;
1793 struct usb_device *dev;
1794 struct urb *urb;
1795 int port_number;
1796 int status;
1797 u16 open_settings;
1798 u8 transaction_timeout;
1799
1800 if (edge_port == NULL)
1801 return -ENODEV;
1802
1803 port_number = port->number - port->serial->minor;
1804 switch (port_number) {
1805 case 0:
1806 edge_port->uart_base = UMPMEM_BASE_UART1;
1807 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1808 break;
1809 case 1:
1810 edge_port->uart_base = UMPMEM_BASE_UART2;
1811 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1812 break;
1813 default:
1814 dev_err(&port->dev, "Unknown port number!!!\n");
1815 return -ENODEV;
1816 }
1817
1818 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1819 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1820
1821 dev = port->serial->dev;
1822
1823 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1824 init_waitqueue_head(&edge_port->delta_msr_wait);
1825
1826 /* turn off loopback */
1827 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1828 if (status) {
1829 dev_err(&port->dev,
1830 "%s - cannot send clear loopback command, %d\n",
1831 __func__, status);
1832 return status;
1833 }
1834
1835 /* set up the port settings */
1836 if (tty)
1837 edge_set_termios(tty, port, &tty->termios);
1838
1839 /* open up the port */
1840
1841 /* milliseconds to timeout for DMA transfer */
1842 transaction_timeout = 2;
1843
1844 edge_port->ump_read_timeout =
1845 max(20, ((transaction_timeout * 3) / 2));
1846
1847 /* milliseconds to timeout for DMA transfer */
1848 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1849 UMP_PIPE_TRANS_TIMEOUT_ENA |
1850 (transaction_timeout << 2));
1851
1852 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1853
1854 /* Tell TI to open and start the port */
1855 status = send_cmd(dev, UMPC_OPEN_PORT,
1856 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1857 if (status) {
1858 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1859 __func__, status);
1860 return status;
1861 }
1862
1863 /* Start the DMA? */
1864 status = send_cmd(dev, UMPC_START_PORT,
1865 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1866 if (status) {
1867 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1868 __func__, status);
1869 return status;
1870 }
1871
1872 /* Clear TX and RX buffers in UMP */
1873 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1874 if (status) {
1875 dev_err(&port->dev,
1876 "%s - cannot send clear buffers command, %d\n",
1877 __func__, status);
1878 return status;
1879 }
1880
1881 /* Read Initial MSR */
1882 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1883 (__u16)(UMPM_UART1_PORT + port_number),
1884 &edge_port->shadow_msr, 1);
1885 if (status) {
1886 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1887 __func__, status);
1888 return status;
1889 }
1890
1891 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1892
1893 /* Set Initial MCR */
1894 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1895 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1896
1897 edge_serial = edge_port->edge_serial;
1898 if (mutex_lock_interruptible(&edge_serial->es_lock))
1899 return -ERESTARTSYS;
1900 if (edge_serial->num_ports_open == 0) {
1901 /* we are the first port to open, post the interrupt urb */
1902 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1903 if (!urb) {
1904 dev_err(&port->dev,
1905 "%s - no interrupt urb present, exiting\n",
1906 __func__);
1907 status = -EINVAL;
1908 goto release_es_lock;
1909 }
1910 urb->context = edge_serial;
1911 status = usb_submit_urb(urb, GFP_KERNEL);
1912 if (status) {
1913 dev_err(&port->dev,
1914 "%s - usb_submit_urb failed with value %d\n",
1915 __func__, status);
1916 goto release_es_lock;
1917 }
1918 }
1919
1920 /*
1921 * reset the data toggle on the bulk endpoints to work around bug in
1922 * host controllers where things get out of sync some times
1923 */
1924 usb_clear_halt(dev, port->write_urb->pipe);
1925 usb_clear_halt(dev, port->read_urb->pipe);
1926
1927 /* start up our bulk read urb */
1928 urb = port->read_urb;
1929 if (!urb) {
1930 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1931 __func__);
1932 status = -EINVAL;
1933 goto unlink_int_urb;
1934 }
1935 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1936 urb->context = edge_port;
1937 status = usb_submit_urb(urb, GFP_KERNEL);
1938 if (status) {
1939 dev_err(&port->dev,
1940 "%s - read bulk usb_submit_urb failed with value %d\n",
1941 __func__, status);
1942 goto unlink_int_urb;
1943 }
1944
1945 ++edge_serial->num_ports_open;
1946
1947 goto release_es_lock;
1948
1949 unlink_int_urb:
1950 if (edge_port->edge_serial->num_ports_open == 0)
1951 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1952 release_es_lock:
1953 mutex_unlock(&edge_serial->es_lock);
1954 return status;
1955 }
1956
1957 static void edge_close(struct usb_serial_port *port)
1958 {
1959 struct edgeport_serial *edge_serial;
1960 struct edgeport_port *edge_port;
1961 struct usb_serial *serial = port->serial;
1962 int port_number;
1963
1964 edge_serial = usb_get_serial_data(port->serial);
1965 edge_port = usb_get_serial_port_data(port);
1966 if (edge_serial == NULL || edge_port == NULL)
1967 return;
1968
1969 /* The bulkreadcompletion routine will check
1970 * this flag and dump add read data */
1971 edge_port->close_pending = 1;
1972
1973 /* chase the port close and flush */
1974 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
1975
1976 usb_kill_urb(port->read_urb);
1977 usb_kill_urb(port->write_urb);
1978 edge_port->ep_write_urb_in_use = 0;
1979
1980 /* assuming we can still talk to the device,
1981 * send a close port command to it */
1982 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1983 port_number = port->number - port->serial->minor;
1984
1985 mutex_lock(&serial->disc_mutex);
1986 if (!serial->disconnected) {
1987 send_cmd(serial->dev,
1988 UMPC_CLOSE_PORT,
1989 (__u8)(UMPM_UART1_PORT + port_number),
1990 0,
1991 NULL,
1992 0);
1993 }
1994 mutex_unlock(&serial->disc_mutex);
1995
1996 mutex_lock(&edge_serial->es_lock);
1997 --edge_port->edge_serial->num_ports_open;
1998 if (edge_port->edge_serial->num_ports_open <= 0) {
1999 /* last port is now closed, let's shut down our interrupt urb */
2000 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2001 edge_port->edge_serial->num_ports_open = 0;
2002 }
2003 mutex_unlock(&edge_serial->es_lock);
2004 edge_port->close_pending = 0;
2005 }
2006
2007 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2008 const unsigned char *data, int count)
2009 {
2010 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2011
2012 if (count == 0) {
2013 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
2014 return 0;
2015 }
2016
2017 if (edge_port == NULL)
2018 return -ENODEV;
2019 if (edge_port->close_pending == 1)
2020 return -ENODEV;
2021
2022 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2023 &edge_port->ep_lock);
2024 edge_send(tty);
2025
2026 return count;
2027 }
2028
2029 static void edge_send(struct tty_struct *tty)
2030 {
2031 struct usb_serial_port *port = tty->driver_data;
2032 int count, result;
2033 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2034 unsigned long flags;
2035
2036 spin_lock_irqsave(&edge_port->ep_lock, flags);
2037
2038 if (edge_port->ep_write_urb_in_use) {
2039 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2040 return;
2041 }
2042
2043 count = kfifo_out(&edge_port->write_fifo,
2044 port->write_urb->transfer_buffer,
2045 port->bulk_out_size);
2046
2047 if (count == 0) {
2048 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2049 return;
2050 }
2051
2052 edge_port->ep_write_urb_in_use = 1;
2053
2054 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2055
2056 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
2057
2058 /* set up our urb */
2059 port->write_urb->transfer_buffer_length = count;
2060
2061 /* send the data out the bulk port */
2062 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2063 if (result) {
2064 dev_err_console(port,
2065 "%s - failed submitting write urb, error %d\n",
2066 __func__, result);
2067 edge_port->ep_write_urb_in_use = 0;
2068 /* TODO: reschedule edge_send */
2069 } else
2070 edge_port->icount.tx += count;
2071
2072 /* wakeup any process waiting for writes to complete */
2073 /* there is now more room in the buffer for new writes */
2074 if (tty)
2075 tty_wakeup(tty);
2076 }
2077
2078 static int edge_write_room(struct tty_struct *tty)
2079 {
2080 struct usb_serial_port *port = tty->driver_data;
2081 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2082 int room = 0;
2083 unsigned long flags;
2084
2085 if (edge_port == NULL)
2086 return 0;
2087 if (edge_port->close_pending == 1)
2088 return 0;
2089
2090 spin_lock_irqsave(&edge_port->ep_lock, flags);
2091 room = kfifo_avail(&edge_port->write_fifo);
2092 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2093
2094 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2095 return room;
2096 }
2097
2098 static int edge_chars_in_buffer(struct tty_struct *tty)
2099 {
2100 struct usb_serial_port *port = tty->driver_data;
2101 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2102 int chars = 0;
2103 unsigned long flags;
2104
2105 if (edge_port == NULL)
2106 return 0;
2107 if (edge_port->close_pending == 1)
2108 return 0;
2109
2110 spin_lock_irqsave(&edge_port->ep_lock, flags);
2111 chars = kfifo_len(&edge_port->write_fifo);
2112 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2113
2114 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2115 return chars;
2116 }
2117
2118 static void edge_throttle(struct tty_struct *tty)
2119 {
2120 struct usb_serial_port *port = tty->driver_data;
2121 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2122 int status;
2123
2124 if (edge_port == NULL)
2125 return;
2126
2127 /* if we are implementing XON/XOFF, send the stop character */
2128 if (I_IXOFF(tty)) {
2129 unsigned char stop_char = STOP_CHAR(tty);
2130 status = edge_write(tty, port, &stop_char, 1);
2131 if (status <= 0) {
2132 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2133 }
2134 }
2135
2136 /* if we are implementing RTS/CTS, stop reads */
2137 /* and the Edgeport will clear the RTS line */
2138 if (C_CRTSCTS(tty))
2139 stop_read(edge_port);
2140
2141 }
2142
2143 static void edge_unthrottle(struct tty_struct *tty)
2144 {
2145 struct usb_serial_port *port = tty->driver_data;
2146 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2147 int status;
2148
2149 if (edge_port == NULL)
2150 return;
2151
2152 /* if we are implementing XON/XOFF, send the start character */
2153 if (I_IXOFF(tty)) {
2154 unsigned char start_char = START_CHAR(tty);
2155 status = edge_write(tty, port, &start_char, 1);
2156 if (status <= 0) {
2157 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2158 }
2159 }
2160 /* if we are implementing RTS/CTS, restart reads */
2161 /* are the Edgeport will assert the RTS line */
2162 if (C_CRTSCTS(tty)) {
2163 status = restart_read(edge_port);
2164 if (status)
2165 dev_err(&port->dev,
2166 "%s - read bulk usb_submit_urb failed: %d\n",
2167 __func__, status);
2168 }
2169
2170 }
2171
2172 static void stop_read(struct edgeport_port *edge_port)
2173 {
2174 unsigned long flags;
2175
2176 spin_lock_irqsave(&edge_port->ep_lock, flags);
2177
2178 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2179 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2180 edge_port->shadow_mcr &= ~MCR_RTS;
2181
2182 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2183 }
2184
2185 static int restart_read(struct edgeport_port *edge_port)
2186 {
2187 struct urb *urb;
2188 int status = 0;
2189 unsigned long flags;
2190
2191 spin_lock_irqsave(&edge_port->ep_lock, flags);
2192
2193 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2194 urb = edge_port->port->read_urb;
2195 status = usb_submit_urb(urb, GFP_ATOMIC);
2196 }
2197 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2198 edge_port->shadow_mcr |= MCR_RTS;
2199
2200 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2201
2202 return status;
2203 }
2204
2205 static void change_port_settings(struct tty_struct *tty,
2206 struct edgeport_port *edge_port, struct ktermios *old_termios)
2207 {
2208 struct device *dev = &edge_port->port->dev;
2209 struct ump_uart_config *config;
2210 int baud;
2211 unsigned cflag;
2212 int status;
2213 int port_number = edge_port->port->number -
2214 edge_port->port->serial->minor;
2215
2216 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
2217
2218 config = kmalloc (sizeof (*config), GFP_KERNEL);
2219 if (!config) {
2220 tty->termios = *old_termios;
2221 dev_err(dev, "%s - out of memory\n", __func__);
2222 return;
2223 }
2224
2225 cflag = tty->termios.c_cflag;
2226
2227 config->wFlags = 0;
2228
2229 /* These flags must be set */
2230 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2231 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2232 config->bUartMode = (__u8)(edge_port->bUartMode);
2233
2234 switch (cflag & CSIZE) {
2235 case CS5:
2236 config->bDataBits = UMP_UART_CHAR5BITS;
2237 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2238 break;
2239 case CS6:
2240 config->bDataBits = UMP_UART_CHAR6BITS;
2241 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2242 break;
2243 case CS7:
2244 config->bDataBits = UMP_UART_CHAR7BITS;
2245 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2246 break;
2247 default:
2248 case CS8:
2249 config->bDataBits = UMP_UART_CHAR8BITS;
2250 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2251 break;
2252 }
2253
2254 if (cflag & PARENB) {
2255 if (cflag & PARODD) {
2256 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2257 config->bParity = UMP_UART_ODDPARITY;
2258 dev_dbg(dev, "%s - parity = odd\n", __func__);
2259 } else {
2260 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2261 config->bParity = UMP_UART_EVENPARITY;
2262 dev_dbg(dev, "%s - parity = even\n", __func__);
2263 }
2264 } else {
2265 config->bParity = UMP_UART_NOPARITY;
2266 dev_dbg(dev, "%s - parity = none\n", __func__);
2267 }
2268
2269 if (cflag & CSTOPB) {
2270 config->bStopBits = UMP_UART_STOPBIT2;
2271 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2272 } else {
2273 config->bStopBits = UMP_UART_STOPBIT1;
2274 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2275 }
2276
2277 /* figure out the flow control settings */
2278 if (cflag & CRTSCTS) {
2279 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2280 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2281 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2282 } else {
2283 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2284 tty->hw_stopped = 0;
2285 restart_read(edge_port);
2286 }
2287
2288 /* if we are implementing XON/XOFF, set the start and stop
2289 character in the device */
2290 config->cXon = START_CHAR(tty);
2291 config->cXoff = STOP_CHAR(tty);
2292
2293 /* if we are implementing INBOUND XON/XOFF */
2294 if (I_IXOFF(tty)) {
2295 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2296 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2297 __func__, config->cXon, config->cXoff);
2298 } else
2299 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2300
2301 /* if we are implementing OUTBOUND XON/XOFF */
2302 if (I_IXON(tty)) {
2303 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2304 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2305 __func__, config->cXon, config->cXoff);
2306 } else
2307 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2308
2309 tty->termios.c_cflag &= ~CMSPAR;
2310
2311 /* Round the baud rate */
2312 baud = tty_get_baud_rate(tty);
2313 if (!baud) {
2314 /* pick a default, any default... */
2315 baud = 9600;
2316 } else
2317 tty_encode_baud_rate(tty, baud, baud);
2318
2319 edge_port->baud_rate = baud;
2320 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2321
2322 /* FIXME: Recompute actual baud from divisor here */
2323
2324 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2325
2326 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2327 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2328 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2329 dev_dbg(dev, "bParity: %d\n", config->bParity);
2330 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2331 dev_dbg(dev, "cXon: %d\n", config->cXon);
2332 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2333 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2334
2335 /* move the word values into big endian mode */
2336 cpu_to_be16s(&config->wFlags);
2337 cpu_to_be16s(&config->wBaudRate);
2338
2339 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2340 (__u8)(UMPM_UART1_PORT + port_number),
2341 0, (__u8 *)config, sizeof(*config));
2342 if (status)
2343 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2344 __func__, status);
2345 kfree(config);
2346 }
2347
2348 static void edge_set_termios(struct tty_struct *tty,
2349 struct usb_serial_port *port, struct ktermios *old_termios)
2350 {
2351 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2352 unsigned int cflag;
2353
2354 cflag = tty->termios.c_cflag;
2355
2356 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2357 tty->termios.c_cflag, tty->termios.c_iflag);
2358 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2359 old_termios->c_cflag, old_termios->c_iflag);
2360 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
2361
2362 if (edge_port == NULL)
2363 return;
2364 /* change the port settings to the new ones specified */
2365 change_port_settings(tty, edge_port, old_termios);
2366 }
2367
2368 static int edge_tiocmset(struct tty_struct *tty,
2369 unsigned int set, unsigned int clear)
2370 {
2371 struct usb_serial_port *port = tty->driver_data;
2372 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2373 unsigned int mcr;
2374 unsigned long flags;
2375
2376 spin_lock_irqsave(&edge_port->ep_lock, flags);
2377 mcr = edge_port->shadow_mcr;
2378 if (set & TIOCM_RTS)
2379 mcr |= MCR_RTS;
2380 if (set & TIOCM_DTR)
2381 mcr |= MCR_DTR;
2382 if (set & TIOCM_LOOP)
2383 mcr |= MCR_LOOPBACK;
2384
2385 if (clear & TIOCM_RTS)
2386 mcr &= ~MCR_RTS;
2387 if (clear & TIOCM_DTR)
2388 mcr &= ~MCR_DTR;
2389 if (clear & TIOCM_LOOP)
2390 mcr &= ~MCR_LOOPBACK;
2391
2392 edge_port->shadow_mcr = mcr;
2393 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2394
2395 restore_mcr(edge_port, mcr);
2396 return 0;
2397 }
2398
2399 static int edge_tiocmget(struct tty_struct *tty)
2400 {
2401 struct usb_serial_port *port = tty->driver_data;
2402 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2403 unsigned int result = 0;
2404 unsigned int msr;
2405 unsigned int mcr;
2406 unsigned long flags;
2407
2408 spin_lock_irqsave(&edge_port->ep_lock, flags);
2409
2410 msr = edge_port->shadow_msr;
2411 mcr = edge_port->shadow_mcr;
2412 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2413 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2414 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2415 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2416 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2417 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2418
2419
2420 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2421 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2422
2423 return result;
2424 }
2425
2426 static int edge_get_icount(struct tty_struct *tty,
2427 struct serial_icounter_struct *icount)
2428 {
2429 struct usb_serial_port *port = tty->driver_data;
2430 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2431 struct async_icount *ic = &edge_port->icount;
2432
2433 icount->cts = ic->cts;
2434 icount->dsr = ic->dsr;
2435 icount->rng = ic->rng;
2436 icount->dcd = ic->dcd;
2437 icount->tx = ic->tx;
2438 icount->rx = ic->rx;
2439 icount->frame = ic->frame;
2440 icount->parity = ic->parity;
2441 icount->overrun = ic->overrun;
2442 icount->brk = ic->brk;
2443 icount->buf_overrun = ic->buf_overrun;
2444 return 0;
2445 }
2446
2447 static int get_serial_info(struct edgeport_port *edge_port,
2448 struct serial_struct __user *retinfo)
2449 {
2450 struct serial_struct tmp;
2451
2452 if (!retinfo)
2453 return -EFAULT;
2454
2455 memset(&tmp, 0, sizeof(tmp));
2456
2457 tmp.type = PORT_16550A;
2458 tmp.line = edge_port->port->serial->minor;
2459 tmp.port = edge_port->port->number;
2460 tmp.irq = 0;
2461 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2462 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2463 tmp.baud_base = 9600;
2464 tmp.close_delay = 5*HZ;
2465 tmp.closing_wait = closing_wait;
2466
2467 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2468 return -EFAULT;
2469 return 0;
2470 }
2471
2472 static int edge_ioctl(struct tty_struct *tty,
2473 unsigned int cmd, unsigned long arg)
2474 {
2475 struct usb_serial_port *port = tty->driver_data;
2476 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2477 struct async_icount cnow;
2478 struct async_icount cprev;
2479
2480 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
2481
2482 switch (cmd) {
2483 case TIOCGSERIAL:
2484 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2485 return get_serial_info(edge_port,
2486 (struct serial_struct __user *) arg);
2487 case TIOCMIWAIT:
2488 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2489 cprev = edge_port->icount;
2490 while (1) {
2491 interruptible_sleep_on(&edge_port->delta_msr_wait);
2492 /* see if a signal did it */
2493 if (signal_pending(current))
2494 return -ERESTARTSYS;
2495 cnow = edge_port->icount;
2496 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2497 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2498 return -EIO; /* no change => error */
2499 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2500 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2501 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2502 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2503 return 0;
2504 }
2505 cprev = cnow;
2506 }
2507 /* not reached */
2508 break;
2509 }
2510 return -ENOIOCTLCMD;
2511 }
2512
2513 static void edge_break(struct tty_struct *tty, int break_state)
2514 {
2515 struct usb_serial_port *port = tty->driver_data;
2516 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2517 int status;
2518 int bv = 0; /* Off */
2519
2520 /* chase the port close */
2521 chase_port(edge_port, 0, 0);
2522
2523 if (break_state == -1)
2524 bv = 1; /* On */
2525 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2526 if (status)
2527 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2528 __func__, status);
2529 }
2530
2531 static int edge_startup(struct usb_serial *serial)
2532 {
2533 struct edgeport_serial *edge_serial;
2534 int status;
2535
2536 /* create our private serial structure */
2537 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2538 if (edge_serial == NULL) {
2539 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2540 return -ENOMEM;
2541 }
2542 mutex_init(&edge_serial->es_lock);
2543 edge_serial->serial = serial;
2544 usb_set_serial_data(serial, edge_serial);
2545
2546 status = download_fw(edge_serial);
2547 if (status) {
2548 kfree(edge_serial);
2549 return status;
2550 }
2551
2552 return 0;
2553 }
2554
2555 static void edge_disconnect(struct usb_serial *serial)
2556 {
2557 }
2558
2559 static void edge_release(struct usb_serial *serial)
2560 {
2561 kfree(usb_get_serial_data(serial));
2562 }
2563
2564 static int edge_port_probe(struct usb_serial_port *port)
2565 {
2566 struct edgeport_port *edge_port;
2567 int ret;
2568
2569 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2570 if (!edge_port)
2571 return -ENOMEM;
2572
2573 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2574 GFP_KERNEL);
2575 if (ret) {
2576 kfree(edge_port);
2577 return -ENOMEM;
2578 }
2579
2580 spin_lock_init(&edge_port->ep_lock);
2581 edge_port->port = port;
2582 edge_port->edge_serial = usb_get_serial_data(port->serial);
2583 edge_port->bUartMode = default_uart_mode;
2584
2585 usb_set_serial_port_data(port, edge_port);
2586
2587 ret = edge_create_sysfs_attrs(port);
2588 if (ret) {
2589 kfifo_free(&edge_port->write_fifo);
2590 kfree(edge_port);
2591 return ret;
2592 }
2593
2594 return 0;
2595 }
2596
2597 static int edge_port_remove(struct usb_serial_port *port)
2598 {
2599 struct edgeport_port *edge_port;
2600
2601 edge_port = usb_get_serial_port_data(port);
2602
2603 edge_remove_sysfs_attrs(port);
2604 kfifo_free(&edge_port->write_fifo);
2605 kfree(edge_port);
2606
2607 return 0;
2608 }
2609
2610 /* Sysfs Attributes */
2611
2612 static ssize_t show_uart_mode(struct device *dev,
2613 struct device_attribute *attr, char *buf)
2614 {
2615 struct usb_serial_port *port = to_usb_serial_port(dev);
2616 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2617
2618 return sprintf(buf, "%d\n", edge_port->bUartMode);
2619 }
2620
2621 static ssize_t store_uart_mode(struct device *dev,
2622 struct device_attribute *attr, const char *valbuf, size_t count)
2623 {
2624 struct usb_serial_port *port = to_usb_serial_port(dev);
2625 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2626 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2627
2628 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2629
2630 if (v < 256)
2631 edge_port->bUartMode = v;
2632 else
2633 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2634
2635 return count;
2636 }
2637
2638 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2639 store_uart_mode);
2640
2641 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2642 {
2643 return device_create_file(&port->dev, &dev_attr_uart_mode);
2644 }
2645
2646 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2647 {
2648 device_remove_file(&port->dev, &dev_attr_uart_mode);
2649 return 0;
2650 }
2651
2652
2653 static struct usb_serial_driver edgeport_1port_device = {
2654 .driver = {
2655 .owner = THIS_MODULE,
2656 .name = "edgeport_ti_1",
2657 },
2658 .description = "Edgeport TI 1 port adapter",
2659 .id_table = edgeport_1port_id_table,
2660 .num_ports = 1,
2661 .open = edge_open,
2662 .close = edge_close,
2663 .throttle = edge_throttle,
2664 .unthrottle = edge_unthrottle,
2665 .attach = edge_startup,
2666 .disconnect = edge_disconnect,
2667 .release = edge_release,
2668 .port_probe = edge_port_probe,
2669 .port_remove = edge_port_remove,
2670 .ioctl = edge_ioctl,
2671 .set_termios = edge_set_termios,
2672 .tiocmget = edge_tiocmget,
2673 .tiocmset = edge_tiocmset,
2674 .get_icount = edge_get_icount,
2675 .write = edge_write,
2676 .write_room = edge_write_room,
2677 .chars_in_buffer = edge_chars_in_buffer,
2678 .break_ctl = edge_break,
2679 .read_int_callback = edge_interrupt_callback,
2680 .read_bulk_callback = edge_bulk_in_callback,
2681 .write_bulk_callback = edge_bulk_out_callback,
2682 };
2683
2684 static struct usb_serial_driver edgeport_2port_device = {
2685 .driver = {
2686 .owner = THIS_MODULE,
2687 .name = "edgeport_ti_2",
2688 },
2689 .description = "Edgeport TI 2 port adapter",
2690 .id_table = edgeport_2port_id_table,
2691 .num_ports = 2,
2692 .open = edge_open,
2693 .close = edge_close,
2694 .throttle = edge_throttle,
2695 .unthrottle = edge_unthrottle,
2696 .attach = edge_startup,
2697 .disconnect = edge_disconnect,
2698 .release = edge_release,
2699 .port_probe = edge_port_probe,
2700 .port_remove = edge_port_remove,
2701 .ioctl = edge_ioctl,
2702 .set_termios = edge_set_termios,
2703 .tiocmget = edge_tiocmget,
2704 .tiocmset = edge_tiocmset,
2705 .write = edge_write,
2706 .write_room = edge_write_room,
2707 .chars_in_buffer = edge_chars_in_buffer,
2708 .break_ctl = edge_break,
2709 .read_int_callback = edge_interrupt_callback,
2710 .read_bulk_callback = edge_bulk_in_callback,
2711 .write_bulk_callback = edge_bulk_out_callback,
2712 };
2713
2714 static struct usb_serial_driver * const serial_drivers[] = {
2715 &edgeport_1port_device, &edgeport_2port_device, NULL
2716 };
2717
2718 module_usb_serial_driver(serial_drivers, id_table_combined);
2719
2720 MODULE_AUTHOR(DRIVER_AUTHOR);
2721 MODULE_DESCRIPTION(DRIVER_DESC);
2722 MODULE_LICENSE("GPL");
2723 MODULE_FIRMWARE("edgeport/down3.bin");
2724
2725 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2726 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2727
2728 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2729 MODULE_PARM_DESC(ignore_cpu_rev,
2730 "Ignore the cpu revision when connecting to a device");
2731
2732 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2733 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux kernel - Deliverables
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