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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / usb / serial / io_ti.c
blobcd3405953f741a4b4e103d482a0009db59453550
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 * Version history:
20 *
21 * July 11, 2002 Removed 4 port device structure since all TI UMP
22 * chips have only 2 ports
23 * David Iacovelli (davidi@ionetworks.com)
24 *
25 */
26
27 #include <linux/kernel.h>
28 #include <linux/jiffies.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/tty.h>
33 #include <linux/tty_driver.h>
34 #include <linux/tty_flip.h>
35 #include <linux/module.h>
36 #include <linux/spinlock.h>
37 #include <linux/mutex.h>
38 #include <linux/serial.h>
39 #include <linux/ioctl.h>
40 #include <asm/uaccess.h>
41 #include <asm/semaphore.h>
42 #include <linux/usb.h>
43 #include <linux/usb/serial.h>
44
45 #include "io_16654.h"
46 #include "io_usbvend.h"
47 #include "io_ti.h"
48
49 /*
50 * Version Information
51 */
52 #define DRIVER_VERSION "v0.7mode043006"
53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
54 #define DRIVER_DESC "Edgeport USB Serial Driver"
55
56
57 /* firmware image code */
58 #define IMAGE_VERSION_NAME PagableOperationalCodeImageVersion
59 #define IMAGE_ARRAY_NAME PagableOperationalCodeImage
60 #define IMAGE_SIZE PagableOperationalCodeSize
61 #include "io_fw_down3.h" /* Define array OperationalCodeImage[] */
62
63 #define EPROM_PAGE_SIZE 64
64
65
66 struct edgeport_uart_buf_desc {
67 __u32 count; // Number of bytes currently in buffer
68 };
69
70 /* different hardware types */
71 #define HARDWARE_TYPE_930 0
72 #define HARDWARE_TYPE_TIUMP 1
73
74 // IOCTL_PRIVATE_TI_GET_MODE Definitions
75 #define TI_MODE_CONFIGURING 0 // Device has not entered start device
76 #define TI_MODE_BOOT 1 // Staying in boot mode
77 #define TI_MODE_DOWNLOAD 2 // Made it to download mode
78 #define TI_MODE_TRANSITIONING 3 // Currently in boot mode but transitioning to download mode
79
80 /* read urb state */
81 #define EDGE_READ_URB_RUNNING 0
82 #define EDGE_READ_URB_STOPPING 1
83 #define EDGE_READ_URB_STOPPED 2
84
85 #define EDGE_LOW_LATENCY 1
86 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
87
88 #define EDGE_OUT_BUF_SIZE 1024
89
90
91 /* Product information read from the Edgeport */
92 struct product_info
93 {
94 int TiMode; // Current TI Mode
95 __u8 hardware_type; // Type of hardware
96 } __attribute__((packed));
97
98 /* circular buffer */
99 struct edge_buf {
100 unsigned int buf_size;
101 char *buf_buf;
102 char *buf_get;
103 char *buf_put;
104 };
105
106 struct edgeport_port {
107 __u16 uart_base;
108 __u16 dma_address;
109 __u8 shadow_msr;
110 __u8 shadow_mcr;
111 __u8 shadow_lsr;
112 __u8 lsr_mask;
113 __u32 ump_read_timeout; /* Number of miliseconds the UMP will
114 wait without data before completing
115 a read short */
116 int baud_rate;
117 int close_pending;
118 int lsr_event;
119 struct edgeport_uart_buf_desc tx;
120 struct async_icount icount;
121 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
122 waiting for msr change to
123 happen */
124 struct edgeport_serial *edge_serial;
125 struct usb_serial_port *port;
126 __u8 bUartMode; /* Port type, 0: RS232, etc. */
127 spinlock_t ep_lock;
128 int ep_read_urb_state;
129 int ep_write_urb_in_use;
130 struct edge_buf *ep_out_buf;
131 };
132
133 struct edgeport_serial {
134 struct product_info product_info;
135 u8 TI_I2C_Type; // Type of I2C in UMP
136 u8 TiReadI2C; // Set to TRUE if we have read the I2c in Boot Mode
137 struct mutex es_lock;
138 int num_ports_open;
139 struct usb_serial *serial;
140 };
141
142
143 /* Devices that this driver supports */
144 static struct usb_device_id edgeport_1port_id_table [] = {
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
161 { }
162 };
163
164 static struct usb_device_id edgeport_2port_id_table [] = {
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
177 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
183 { }
184 };
185
186 /* Devices that this driver supports */
187 static struct usb_device_id id_table_combined [] = {
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
209 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
210 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
211 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
212 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
213 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
214 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
215 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
216 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
217 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
218 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
219 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
220 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
221 { }
222 };
223
224 MODULE_DEVICE_TABLE (usb, id_table_combined);
225
226 static struct usb_driver io_driver = {
227 .name = "io_ti",
228 .probe = usb_serial_probe,
229 .disconnect = usb_serial_disconnect,
230 .id_table = id_table_combined,
231 .no_dynamic_id = 1,
232 };
233
234
235 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
236
237 static int debug;
238
239 static int TIStayInBootMode = 0;
240 static int low_latency = EDGE_LOW_LATENCY;
241 static int closing_wait = EDGE_CLOSING_WAIT;
242 static int ignore_cpu_rev = 0;
243 static int default_uart_mode = 0; /* RS232 */
244
245
246 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
247
248 static void stop_read(struct edgeport_port *edge_port);
249 static int restart_read(struct edgeport_port *edge_port);
250
251 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios);
252 static void edge_send(struct usb_serial_port *port);
253
254 /* sysfs attributes */
255 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
256 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
257
258 /* circular buffer */
259 static struct edge_buf *edge_buf_alloc(unsigned int size);
260 static void edge_buf_free(struct edge_buf *eb);
261 static void edge_buf_clear(struct edge_buf *eb);
262 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
263 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
264 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
265 unsigned int count);
266 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
267 unsigned int count);
268
269
270 static int TIReadVendorRequestSync (struct usb_device *dev,
271 __u8 request,
272 __u16 value,
273 __u16 index,
274 u8 *data,
275 int size)
276 {
277 int status;
278
279 status = usb_control_msg (dev,
280 usb_rcvctrlpipe(dev, 0),
281 request,
282 (USB_TYPE_VENDOR |
283 USB_RECIP_DEVICE |
284 USB_DIR_IN),
285 value,
286 index,
287 data,
288 size,
289 1000);
290 if (status < 0)
291 return status;
292 if (status != size) {
293 dbg ("%s - wanted to write %d, but only wrote %d",
294 __FUNCTION__, size, status);
295 return -ECOMM;
296 }
297 return 0;
298 }
299
300 static int TISendVendorRequestSync (struct usb_device *dev,
301 __u8 request,
302 __u16 value,
303 __u16 index,
304 u8 *data,
305 int size)
306 {
307 int status;
308
309 status = usb_control_msg (dev,
310 usb_sndctrlpipe(dev, 0),
311 request,
312 (USB_TYPE_VENDOR |
313 USB_RECIP_DEVICE |
314 USB_DIR_OUT),
315 value,
316 index,
317 data,
318 size,
319 1000);
320 if (status < 0)
321 return status;
322 if (status != size) {
323 dbg ("%s - wanted to write %d, but only wrote %d",
324 __FUNCTION__, size, status);
325 return -ECOMM;
326 }
327 return 0;
328 }
329
330 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
331 __u8 moduleid, __u16 value, u8 *data,
332 int size)
333 {
334 return TISendVendorRequestSync (dev,
335 command, // Request
336 value, // wValue
337 moduleid, // wIndex
338 data, // TransferBuffer
339 size); // TransferBufferLength
340
341 }
342
343 /* clear tx/rx buffers and fifo in TI UMP */
344 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
345 {
346 int port_number = port->number - port->serial->minor;
347
348 dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
349
350 return TIWriteCommandSync (port->serial->dev,
351 UMPC_PURGE_PORT,
352 (__u8)(UMPM_UART1_PORT + port_number),
353 mask,
354 NULL,
355 0);
356 }
357
358 /**
359 * TIReadDownloadMemory - Read edgeport memory from TI chip
360 * @dev: usb device pointer
361 * @start_address: Device CPU address at which to read
362 * @length: Length of above data
363 * @address_type: Can read both XDATA and I2C
364 * @buffer: pointer to input data buffer
365 */
366 static int TIReadDownloadMemory(struct usb_device *dev, int start_address,
367 int length, __u8 address_type, __u8 *buffer)
368 {
369 int status = 0;
370 __u8 read_length;
371 __be16 be_start_address;
372
373 dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
374
375 /* Read in blocks of 64 bytes
376 * (TI firmware can't handle more than 64 byte reads)
377 */
378 while (length) {
379 if (length > 64)
380 read_length= 64;
381 else
382 read_length = (__u8)length;
383
384 if (read_length > 1) {
385 dbg ("%s - @ %x for %d", __FUNCTION__,
386 start_address, read_length);
387 }
388 be_start_address = cpu_to_be16 (start_address);
389 status = TIReadVendorRequestSync (dev,
390 UMPC_MEMORY_READ, // Request
391 (__u16)address_type, // wValue (Address type)
392 (__force __u16)be_start_address, // wIndex (Address to read)
393 buffer, // TransferBuffer
394 read_length); // TransferBufferLength
395
396 if (status) {
397 dbg ("%s - ERROR %x", __FUNCTION__, status);
398 return status;
399 }
400
401 if (read_length > 1) {
402 usb_serial_debug_data(debug, &dev->dev, __FUNCTION__,
403 read_length, buffer);
404 }
405
406 /* Update pointers/length */
407 start_address += read_length;
408 buffer += read_length;
409 length -= read_length;
410 }
411
412 return status;
413 }
414
415 static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
416 {
417 return TIReadDownloadMemory (dev,
418 start_address,
419 length,
420 DTK_ADDR_SPACE_XDATA,
421 buffer);
422 }
423
424 /* Read edgeport memory to a given block */
425 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
426 {
427 int status = 0;
428 int i;
429
430 for (i=0; i< length; i++) {
431 status = TIReadVendorRequestSync (serial->serial->dev,
432 UMPC_MEMORY_READ, // Request
433 serial->TI_I2C_Type, // wValue (Address type)
434 (__u16)(start_address+i), // wIndex
435 &buffer[i], // TransferBuffer
436 0x01); // TransferBufferLength
437 if (status) {
438 dbg ("%s - ERROR %x", __FUNCTION__, status);
439 return status;
440 }
441 }
442
443 dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
444 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
445
446 serial->TiReadI2C = 1;
447
448 return status;
449 }
450
451 /* Write given block to TI EPROM memory */
452 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
453 {
454 int status = 0;
455 int i;
456 __u8 temp;
457
458 /* Must do a read before write */
459 if (!serial->TiReadI2C) {
460 status = TIReadBootMemory(serial, 0, 1, &temp);
461 if (status)
462 return status;
463 }
464
465 for (i=0; i < length; ++i) {
466 status = TISendVendorRequestSync (serial->serial->dev,
467 UMPC_MEMORY_WRITE, // Request
468 buffer[i], // wValue
469 (__u16)(i+start_address), // wIndex
470 NULL, // TransferBuffer
471 0); // TransferBufferLength
472 if (status)
473 return status;
474 }
475
476 dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
477 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
478
479 return status;
480 }
481
482
483 /* Write edgeport I2C memory to TI chip */
484 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
485 {
486 int status = 0;
487 int write_length;
488 __be16 be_start_address;
489
490 /* We can only send a maximum of 1 aligned byte page at a time */
491
492 /* calulate the number of bytes left in the first page */
493 write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
494
495 if (write_length > length)
496 write_length = length;
497
498 dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
499 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
500
501 /* Write first page */
502 be_start_address = cpu_to_be16 (start_address);
503 status = TISendVendorRequestSync (serial->serial->dev,
504 UMPC_MEMORY_WRITE, // Request
505 (__u16)address_type, // wValue
506 (__force __u16)be_start_address, // wIndex
507 buffer, // TransferBuffer
508 write_length);
509 if (status) {
510 dbg ("%s - ERROR %d", __FUNCTION__, status);
511 return status;
512 }
513
514 length -= write_length;
515 start_address += write_length;
516 buffer += write_length;
517
518 /* We should be aligned now -- can write max page size bytes at a time */
519 while (length) {
520 if (length > EPROM_PAGE_SIZE)
521 write_length = EPROM_PAGE_SIZE;
522 else
523 write_length = length;
524
525 dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
526 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
527
528 /* Write next page */
529 be_start_address = cpu_to_be16 (start_address);
530 status = TISendVendorRequestSync (serial->serial->dev,
531 UMPC_MEMORY_WRITE, // Request
532 (__u16)address_type, // wValue
533 (__force __u16)be_start_address, // wIndex
534 buffer, // TransferBuffer
535 write_length); // TransferBufferLength
536 if (status) {
537 dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __FUNCTION__, status);
538 return status;
539 }
540
541 length -= write_length;
542 start_address += write_length;
543 buffer += write_length;
544 }
545 return status;
546 }
547
548 /* Examine the UMP DMA registers and LSR
549 *
550 * Check the MSBit of the X and Y DMA byte count registers.
551 * A zero in this bit indicates that the TX DMA buffers are empty
552 * then check the TX Empty bit in the UART.
553 */
554 static int TIIsTxActive (struct edgeport_port *port)
555 {
556 int status;
557 struct out_endpoint_desc_block *oedb;
558 __u8 *lsr;
559 int bytes_left = 0;
560
561 oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
562 if (!oedb) {
563 dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
564 return -ENOMEM;
565 }
566
567 lsr = kmalloc (1, GFP_KERNEL); /* Sigh, that's right, just one byte,
568 as not all platforms can do DMA
569 from stack */
570 if (!lsr) {
571 kfree(oedb);
572 return -ENOMEM;
573 }
574 /* Read the DMA Count Registers */
575 status = TIReadRam (port->port->serial->dev,
576 port->dma_address,
577 sizeof( *oedb),
578 (void *)oedb);
579
580 if (status)
581 goto exit_is_tx_active;
582
583 dbg ("%s - XByteCount 0x%X", __FUNCTION__, oedb->XByteCount);
584
585 /* and the LSR */
586 status = TIReadRam (port->port->serial->dev,
587 port->uart_base + UMPMEM_OFFS_UART_LSR,
588 1,
589 lsr);
590
591 if (status)
592 goto exit_is_tx_active;
593 dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr);
594
595 /* If either buffer has data or we are transmitting then return TRUE */
596 if ((oedb->XByteCount & 0x80 ) != 0 )
597 bytes_left += 64;
598
599 if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
600 bytes_left += 1;
601
602 /* We return Not Active if we get any kind of error */
603 exit_is_tx_active:
604 dbg ("%s - return %d", __FUNCTION__, bytes_left );
605
606 kfree(lsr);
607 kfree(oedb);
608 return bytes_left;
609 }
610
611 static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush)
612 {
613 int baud_rate;
614 struct tty_struct *tty = port->port->tty;
615 wait_queue_t wait;
616 unsigned long flags;
617
618 if (!timeout)
619 timeout = (HZ*EDGE_CLOSING_WAIT)/100;
620
621 /* wait for data to drain from the buffer */
622 spin_lock_irqsave(&port->ep_lock, flags);
623 init_waitqueue_entry(&wait, current);
624 add_wait_queue(&tty->write_wait, &wait);
625 for (;;) {
626 set_current_state(TASK_INTERRUPTIBLE);
627 if (edge_buf_data_avail(port->ep_out_buf) == 0
628 || timeout == 0 || signal_pending(current)
629 || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */
630 break;
631 spin_unlock_irqrestore(&port->ep_lock, flags);
632 timeout = schedule_timeout(timeout);
633 spin_lock_irqsave(&port->ep_lock, flags);
634 }
635 set_current_state(TASK_RUNNING);
636 remove_wait_queue(&tty->write_wait, &wait);
637 if (flush)
638 edge_buf_clear(port->ep_out_buf);
639 spin_unlock_irqrestore(&port->ep_lock, flags);
640
641 /* wait for data to drain from the device */
642 timeout += jiffies;
643 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
644 && usb_get_intfdata(port->port->serial->interface)) { /* not disconnected */
645 if (!TIIsTxActive(port))
646 break;
647 msleep(10);
648 }
649
650 /* disconnected */
651 if (!usb_get_intfdata(port->port->serial->interface))
652 return;
653
654 /* wait one more character time, based on baud rate */
655 /* (TIIsTxActive doesn't seem to wait for the last byte) */
656 if ((baud_rate=port->baud_rate) == 0)
657 baud_rate = 50;
658 msleep(max(1,(10000+baud_rate-1)/baud_rate));
659 }
660
661 static int TIChooseConfiguration (struct usb_device *dev)
662 {
663 // There may be multiple configurations on this device, in which case
664 // we would need to read and parse all of them to find out which one
665 // we want. However, we just support one config at this point,
666 // configuration # 1, which is Config Descriptor 0.
667
668 dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces);
669 dbg ("%s - MAX Power = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
670
671 if (dev->config->desc.bNumInterfaces != 1) {
672 dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
673 return -ENODEV;
674 }
675
676 return 0;
677 }
678
679 static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
680 {
681 int status;
682
683 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
684 status = TIReadDownloadMemory (serial->serial->dev,
685 start_address,
686 length,
687 serial->TI_I2C_Type,
688 buffer);
689 } else {
690 status = TIReadBootMemory (serial,
691 start_address,
692 length,
693 buffer);
694 }
695
696 return status;
697 }
698
699 static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
700 {
701 if (serial->product_info.TiMode == TI_MODE_BOOT)
702 return TIWriteBootMemory (serial,
703 start_address,
704 length,
705 buffer);
706
707 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
708 return TIWriteDownloadI2C (serial,
709 start_address,
710 length,
711 serial->TI_I2C_Type,
712 buffer);
713
714 return -EINVAL;
715 }
716
717
718
719 /* Read a descriptor header from I2C based on type */
720 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
721 {
722 int start_address;
723 int status;
724
725 /* Search for requested descriptor in I2C */
726 start_address = 2;
727 do {
728 status = TIReadRom (serial,
729 start_address,
730 sizeof(struct ti_i2c_desc),
731 (__u8 *)rom_desc );
732 if (status)
733 return 0;
734
735 if (rom_desc->Type == desc_type)
736 return start_address;
737
738 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
739
740 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
741
742 return 0;
743 }
744
745 /* Validate descriptor checksum */
746 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
747 {
748 __u16 i;
749 __u8 cs = 0;
750
751 for (i=0; i < rom_desc->Size; i++) {
752 cs = (__u8)(cs + buffer[i]);
753 }
754 if (cs != rom_desc->CheckSum) {
755 dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
756 return -EINVAL;
757 }
758 return 0;
759 }
760
761 /* Make sure that the I2C image is good */
762 static int TiValidateI2cImage (struct edgeport_serial *serial)
763 {
764 struct device *dev = &serial->serial->dev->dev;
765 int status = 0;
766 struct ti_i2c_desc *rom_desc;
767 int start_address = 2;
768 __u8 *buffer;
769 __u16 ttype;
770
771 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
772 if (!rom_desc) {
773 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
774 return -ENOMEM;
775 }
776 buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
777 if (!buffer) {
778 dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__);
779 kfree (rom_desc);
780 return -ENOMEM;
781 }
782
783 // Read the first byte (Signature0) must be 0x52 or 0x10
784 status = TIReadRom (serial, 0, 1, buffer);
785 if (status)
786 goto ExitTiValidateI2cImage;
787
788 if (*buffer != UMP5152 && *buffer != UMP3410) {
789 dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
790 status = -ENODEV;
791 goto ExitTiValidateI2cImage;
792 }
793
794 do {
795 // Validate the I2C
796 status = TIReadRom (serial,
797 start_address,
798 sizeof(struct ti_i2c_desc),
799 (__u8 *)rom_desc);
800 if (status)
801 break;
802
803 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
804 status = -ENODEV;
805 dbg ("%s - structure too big, erroring out.", __FUNCTION__);
806 break;
807 }
808
809 dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
810
811 // Skip type 2 record
812 ttype = rom_desc->Type & 0x0f;
813 if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
814 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) {
815 // Read the descriptor data
816 status = TIReadRom(serial,
817 start_address+sizeof(struct ti_i2c_desc),
818 rom_desc->Size,
819 buffer);
820 if (status)
821 break;
822
823 status = ValidChecksum(rom_desc, buffer);
824 if (status)
825 break;
826 }
827 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
828
829 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
830
831 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
832 status = -ENODEV;
833
834 ExitTiValidateI2cImage:
835 kfree (buffer);
836 kfree (rom_desc);
837 return status;
838 }
839
840 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
841 {
842 int status;
843 int start_address;
844 struct ti_i2c_desc *rom_desc;
845 struct edge_ti_manuf_descriptor *desc;
846
847 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
848 if (!rom_desc) {
849 dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__);
850 return -ENOMEM;
851 }
852 start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
853
854 if (!start_address) {
855 dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
856 status = -ENODEV;
857 goto exit;
858 }
859
860 // Read the descriptor data
861 status = TIReadRom (serial,
862 start_address+sizeof(struct ti_i2c_desc),
863 rom_desc->Size,
864 buffer);
865 if (status)
866 goto exit;
867
868 status = ValidChecksum(rom_desc, buffer);
869
870 desc = (struct edge_ti_manuf_descriptor *)buffer;
871 dbg ( "%s - IonConfig 0x%x", __FUNCTION__, desc->IonConfig );
872 dbg ( "%s - Version %d", __FUNCTION__, desc->Version );
873 dbg ( "%s - Cpu/Board 0x%x", __FUNCTION__, desc->CpuRev_BoardRev );
874 dbg ( "%s - NumPorts %d", __FUNCTION__, desc->NumPorts );
875 dbg ( "%s - NumVirtualPorts %d", __FUNCTION__, desc->NumVirtualPorts );
876 dbg ( "%s - TotalPorts %d", __FUNCTION__, desc->TotalPorts );
877
878 exit:
879 kfree (rom_desc);
880 return status;
881 }
882
883 /* Build firmware header used for firmware update */
884 static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
885 {
886 __u8 *buffer;
887 int buffer_size;
888 int i;
889 __u8 cs = 0;
890 struct ti_i2c_desc *i2c_header;
891 struct ti_i2c_image_header *img_header;
892 struct ti_i2c_firmware_rec *firmware_rec;
893
894 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
895 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
896 // will download the latest firmware (padded to 15.5k) into the UMP ram.
897 // And finally when the device comes back up in download mode the driver will cause
898 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
899 // the record type from 0xf2 to 0x02.
900
901 // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
902 buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
903
904 buffer = kmalloc (buffer_size, GFP_KERNEL);
905 if (!buffer) {
906 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
907 return -ENOMEM;
908 }
909
910 // Set entire image of 0xffs
911 memset (buffer, 0xff, buffer_size);
912
913 // Copy version number into firmware record
914 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
915
916 firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
917 firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
918
919 // Pointer to fw_down memory image
920 img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
921
922 memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
923 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
924 le16_to_cpu(img_header->Length));
925
926 for (i=0; i < buffer_size; i++) {
927 cs = (__u8)(cs + buffer[i]);
928 }
929
930 kfree (buffer);
931
932 // Build new header
933 i2c_header = (struct ti_i2c_desc *)header;
934 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
935
936 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
937 i2c_header->Size = (__u16)buffer_size;
938 i2c_header->CheckSum = cs;
939 firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
940 firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
941
942 return 0;
943 }
944
945 /* Try to figure out what type of I2c we have */
946 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
947 {
948 int status;
949 __u8 data;
950
951 // Try to read type 2
952 status = TIReadVendorRequestSync (serial->serial->dev,
953 UMPC_MEMORY_READ, // Request
954 DTK_ADDR_SPACE_I2C_TYPE_II, // wValue (Address type)
955 0, // wIndex
956 &data, // TransferBuffer
957 0x01); // TransferBufferLength
958 if (status)
959 dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
960 else
961 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
962 if ((!status) && (data == UMP5152 || data == UMP3410)) {
963 dbg ("%s - ROM_TYPE_II", __FUNCTION__);
964 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
965 return 0;
966 }
967
968 // Try to read type 3
969 status = TIReadVendorRequestSync (serial->serial->dev,
970 UMPC_MEMORY_READ, // Request
971 DTK_ADDR_SPACE_I2C_TYPE_III, // wValue (Address type)
972 0, // wIndex
973 &data, // TransferBuffer
974 0x01); // TransferBufferLength
975 if (status)
976 dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
977 else
978 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
979 if ((!status) && (data == UMP5152 || data == UMP3410)) {
980 dbg ("%s - ROM_TYPE_III", __FUNCTION__);
981 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
982 return 0;
983 }
984
985 dbg ("%s - Unknown", __FUNCTION__);
986 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
987 return -ENODEV;
988 }
989
990 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
991 {
992 int status;
993
994 status = usb_bulk_msg (serial->dev,
995 usb_sndbulkpipe(serial->dev,
996 serial->port[0]->bulk_out_endpointAddress),
997 buffer,
998 length,
999 num_sent,
1000 1000);
1001 return status;
1002 }
1003
1004 /* Download given firmware image to the device (IN BOOT MODE) */
1005 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
1006 {
1007 int status = 0;
1008 int pos;
1009 int transfer;
1010 int done;
1011
1012 // Transfer firmware image
1013 for (pos = 0; pos < image_length; ) {
1014 // Read the next buffer from file
1015 transfer = image_length - pos;
1016 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
1017 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
1018
1019 // Transfer data
1020 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
1021 if (status)
1022 break;
1023 // Advance buffer pointer
1024 pos += done;
1025 }
1026
1027 return status;
1028 }
1029
1030 // FIXME!!!
1031 static int TIConfigureBootDevice (struct usb_device *dev)
1032 {
1033 return 0;
1034 }
1035
1036 /**
1037 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1038 *
1039 * This routine downloads the main operating code into the TI5052, using the
1040 * boot code already burned into E2PROM or ROM.
1041 */
1042 static int TIDownloadFirmware (struct edgeport_serial *serial)
1043 {
1044 struct device *dev = &serial->serial->dev->dev;
1045 int status = 0;
1046 int start_address;
1047 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1048 struct usb_interface_descriptor *interface;
1049 int download_cur_ver;
1050 int download_new_ver;
1051
1052 /* This routine is entered by both the BOOT mode and the Download mode
1053 * We can determine which code is running by the reading the config
1054 * descriptor and if we have only one bulk pipe it is in boot mode
1055 */
1056 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1057
1058 /* Default to type 2 i2c */
1059 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1060
1061 status = TIChooseConfiguration (serial->serial->dev);
1062 if (status)
1063 return status;
1064
1065 interface = &serial->serial->interface->cur_altsetting->desc;
1066 if (!interface) {
1067 dev_err (dev, "%s - no interface set, error!\n", __FUNCTION__);
1068 return -ENODEV;
1069 }
1070
1071 // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1072 // if we have more than one endpoint we are definitely in download mode
1073 if (interface->bNumEndpoints > 1)
1074 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1075 else
1076 // Otherwise we will remain in configuring mode
1077 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1078
1079 // Save Download Version Number
1080 OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1081 OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1082 OperationalCodeImageVersion.BuildNumber = PagableOperationalCodeImageVersion.BuildNumber;
1083
1084 /********************************************************************/
1085 /* Download Mode */
1086 /********************************************************************/
1087 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1088 struct ti_i2c_desc *rom_desc;
1089
1090 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
1091
1092 status = TiValidateI2cImage (serial);
1093 if (status) {
1094 dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
1095 __FUNCTION__);
1096 return status;
1097 }
1098
1099 /* Validate Hardware version number
1100 * Read Manufacturing Descriptor from TI Based Edgeport
1101 */
1102 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1103 if (!ti_manuf_desc) {
1104 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1105 return -ENOMEM;
1106 }
1107 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1108 if (status) {
1109 kfree (ti_manuf_desc);
1110 return status;
1111 }
1112
1113 // Check version number of ION descriptor
1114 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1115 dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1116 TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1117 kfree (ti_manuf_desc);
1118 return -EINVAL;
1119 }
1120
1121 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1122 if (!rom_desc) {
1123 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1124 kfree (ti_manuf_desc);
1125 return -ENOMEM;
1126 }
1127
1128 // Search for type 2 record (firmware record)
1129 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1130 struct ti_i2c_firmware_rec *firmware_version;
1131 __u8 record;
1132
1133 dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
1134
1135 firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1136 if (!firmware_version) {
1137 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1138 kfree (rom_desc);
1139 kfree (ti_manuf_desc);
1140 return -ENOMEM;
1141 }
1142
1143 // Validate version number
1144 // Read the descriptor data
1145 status = TIReadRom (serial,
1146 start_address+sizeof(struct ti_i2c_desc),
1147 sizeof(struct ti_i2c_firmware_rec),
1148 (__u8 *)firmware_version);
1149 if (status) {
1150 kfree (firmware_version);
1151 kfree (rom_desc);
1152 kfree (ti_manuf_desc);
1153 return status;
1154 }
1155
1156 // Check version number of download with current version in I2c
1157 download_cur_ver = (firmware_version->Ver_Major << 8) +
1158 (firmware_version->Ver_Minor);
1159 download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1160 (OperationalCodeImageVersion.MinorVersion);
1161
1162 dbg ("%s - >>>Firmware Versions Device %d.%d Driver %d.%d",
1163 __FUNCTION__,
1164 firmware_version->Ver_Major,
1165 firmware_version->Ver_Minor,
1166 OperationalCodeImageVersion.MajorVersion,
1167 OperationalCodeImageVersion.MinorVersion);
1168
1169 // Check if we have an old version in the I2C and update if necessary
1170 if (download_cur_ver != download_new_ver) {
1171 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1172 __FUNCTION__,
1173 firmware_version->Ver_Major,
1174 firmware_version->Ver_Minor,
1175 OperationalCodeImageVersion.MajorVersion,
1176 OperationalCodeImageVersion.MinorVersion);
1177
1178 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1179 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
1180 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1181 // And finally when the device comes back up in download mode the driver will cause
1182 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1183 // the record type from 0xf2 to 0x02.
1184
1185 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1186
1187 // Change the I2C Firmware record type to 0xf2 to trigger an update
1188 status = TIWriteRom (serial,
1189 start_address,
1190 sizeof(record),
1191 &record);
1192 if (status) {
1193 kfree (firmware_version);
1194 kfree (rom_desc);
1195 kfree (ti_manuf_desc);
1196 return status;
1197 }
1198
1199 // verify the write -- must do this in order for write to
1200 // complete before we do the hardware reset
1201 status = TIReadRom (serial,
1202 start_address,
1203 sizeof(record),
1204 &record);
1205
1206 if (status) {
1207 kfree (firmware_version);
1208 kfree (rom_desc);
1209 kfree (ti_manuf_desc);
1210 return status;
1211 }
1212
1213 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1214 dev_err (dev, "%s - error resetting device\n", __FUNCTION__);
1215 kfree (firmware_version);
1216 kfree (rom_desc);
1217 kfree (ti_manuf_desc);
1218 return -ENODEV;
1219 }
1220
1221 dbg ("%s - HARDWARE RESET", __FUNCTION__);
1222
1223 // Reset UMP -- Back to BOOT MODE
1224 status = TISendVendorRequestSync (serial->serial->dev,
1225 UMPC_HARDWARE_RESET, // Request
1226 0, // wValue
1227 0, // wIndex
1228 NULL, // TransferBuffer
1229 0); // TransferBufferLength
1230
1231 dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
1232
1233 /* return an error on purpose. */
1234 kfree (firmware_version);
1235 kfree (rom_desc);
1236 kfree (ti_manuf_desc);
1237 return -ENODEV;
1238 }
1239 kfree (firmware_version);
1240 }
1241 // Search for type 0xF2 record (firmware blank record)
1242 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1243 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1244 __u8 *header;
1245 __u8 *vheader;
1246
1247 header = kmalloc (HEADER_SIZE, GFP_KERNEL);
1248 if (!header) {
1249 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1250 kfree (rom_desc);
1251 kfree (ti_manuf_desc);
1252 return -ENOMEM;
1253 }
1254
1255 vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1256 if (!vheader) {
1257 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1258 kfree (header);
1259 kfree (rom_desc);
1260 kfree (ti_manuf_desc);
1261 return -ENOMEM;
1262 }
1263
1264 dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
1265
1266 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1267 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
1268 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1269 // And finally when the device comes back up in download mode the driver will cause
1270 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1271 // the record type from 0xf2 to 0x02.
1272 status = BuildI2CFirmwareHeader(header, dev);
1273 if (status) {
1274 kfree (vheader);
1275 kfree (header);
1276 kfree (rom_desc);
1277 kfree (ti_manuf_desc);
1278 return status;
1279 }
1280
1281 // Update I2C with type 0xf2 record with correct size and checksum
1282 status = TIWriteRom (serial,
1283 start_address,
1284 HEADER_SIZE,
1285 header);
1286 if (status) {
1287 kfree (vheader);
1288 kfree (header);
1289 kfree (rom_desc);
1290 kfree (ti_manuf_desc);
1291 return status;
1292 }
1293
1294 // verify the write -- must do this in order for write to
1295 // complete before we do the hardware reset
1296 status = TIReadRom (serial,
1297 start_address,
1298 HEADER_SIZE,
1299 vheader);
1300
1301 if (status) {
1302 dbg ("%s - can't read header back", __FUNCTION__);
1303 kfree (vheader);
1304 kfree (header);
1305 kfree (rom_desc);
1306 kfree (ti_manuf_desc);
1307 return status;
1308 }
1309 if (memcmp(vheader, header, HEADER_SIZE)) {
1310 dbg ("%s - write download record failed", __FUNCTION__);
1311 kfree (vheader);
1312 kfree (header);
1313 kfree (rom_desc);
1314 kfree (ti_manuf_desc);
1315 return status;
1316 }
1317
1318 kfree (vheader);
1319 kfree (header);
1320
1321 dbg ("%s - Start firmware update", __FUNCTION__);
1322
1323 // Tell firmware to copy download image into I2C
1324 status = TISendVendorRequestSync (serial->serial->dev,
1325 UMPC_COPY_DNLD_TO_I2C, // Request
1326 0, // wValue
1327 0, // wIndex
1328 NULL, // TransferBuffer
1329 0); // TransferBufferLength
1330
1331 dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
1332 if (status) {
1333 dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __FUNCTION__);
1334 kfree (rom_desc);
1335 kfree (ti_manuf_desc);
1336 return status;
1337 }
1338 }
1339
1340 // The device is running the download code
1341 kfree (rom_desc);
1342 kfree (ti_manuf_desc);
1343 return 0;
1344 }
1345
1346 /********************************************************************/
1347 /* Boot Mode */
1348 /********************************************************************/
1349 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
1350 __FUNCTION__);
1351
1352 // Configure the TI device so we can use the BULK pipes for download
1353 status = TIConfigureBootDevice (serial->serial->dev);
1354 if (status)
1355 return status;
1356
1357 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) {
1358 dbg ("%s - VID = 0x%x", __FUNCTION__,
1359 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1360 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1361 goto StayInBootMode;
1362 }
1363
1364 // We have an ION device (I2c Must be programmed)
1365 // Determine I2C image type
1366 if (TIGetI2cTypeInBootMode(serial)) {
1367 goto StayInBootMode;
1368 }
1369
1370 // Registry variable set?
1371 if (TIStayInBootMode) {
1372 dbg ("%s - TIStayInBootMode", __FUNCTION__);
1373 goto StayInBootMode;
1374 }
1375
1376 // Check for ION Vendor ID and that the I2C is valid
1377 if (!TiValidateI2cImage(serial)) {
1378 struct ti_i2c_image_header *header;
1379 int i;
1380 __u8 cs = 0;
1381 __u8 *buffer;
1382 int buffer_size;
1383
1384 /* Validate Hardware version number
1385 * Read Manufacturing Descriptor from TI Based Edgeport
1386 */
1387 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1388 if (!ti_manuf_desc) {
1389 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1390 return -ENOMEM;
1391 }
1392 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1393 if (status) {
1394 kfree (ti_manuf_desc);
1395 goto StayInBootMode;
1396 }
1397
1398 // Check for version 2
1399 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1400 dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1401 TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1402 kfree (ti_manuf_desc);
1403 goto StayInBootMode;
1404 }
1405
1406 kfree (ti_manuf_desc);
1407
1408 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1409 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
1410 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1411 // And finally when the device comes back up in download mode the driver will cause
1412 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1413 // the record type from 0xf2 to 0x02.
1414
1415 /*
1416 * Do we really have to copy the whole firmware image,
1417 * or could we do this in place!
1418 */
1419
1420 // Allocate a 15.5k buffer + 3 byte header
1421 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1422 buffer = kmalloc (buffer_size, GFP_KERNEL);
1423 if (!buffer) {
1424 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
1425 return -ENOMEM;
1426 }
1427
1428 // Initialize the buffer to 0xff (pad the buffer)
1429 memset (buffer, 0xff, buffer_size);
1430
1431 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1432
1433 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1434 cs = (__u8)(cs + buffer[i]);
1435 }
1436
1437 header = (struct ti_i2c_image_header *)buffer;
1438
1439 // update length and checksum after padding
1440 header->Length = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header)));
1441 header->CheckSum = cs;
1442
1443 // Download the operational code
1444 dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
1445 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1446
1447 kfree (buffer);
1448
1449 if (status) {
1450 dbg ("%s - Error downloading operational code image", __FUNCTION__);
1451 return status;
1452 }
1453
1454 // Device will reboot
1455 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1456
1457 dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
1458
1459 /* return an error on purpose */
1460 return -ENODEV;
1461 }
1462
1463 StayInBootMode:
1464 // Eprom is invalid or blank stay in boot mode
1465 dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
1466 serial->product_info.TiMode = TI_MODE_BOOT;
1467
1468 return 0;
1469 }
1470
1471
1472 static int TISetDtr (struct edgeport_port *port)
1473 {
1474 int port_number = port->port->number - port->port->serial->minor;
1475
1476 dbg ("%s", __FUNCTION__);
1477 port->shadow_mcr |= MCR_DTR;
1478
1479 return TIWriteCommandSync (port->port->serial->dev,
1480 UMPC_SET_CLR_DTR,
1481 (__u8)(UMPM_UART1_PORT + port_number),
1482 1, /* set */
1483 NULL,
1484 0);
1485 }
1486
1487 static int TIClearDtr (struct edgeport_port *port)
1488 {
1489 int port_number = port->port->number - port->port->serial->minor;
1490
1491 dbg ("%s", __FUNCTION__);
1492 port->shadow_mcr &= ~MCR_DTR;
1493
1494 return TIWriteCommandSync (port->port->serial->dev,
1495 UMPC_SET_CLR_DTR,
1496 (__u8)(UMPM_UART1_PORT + port_number),
1497 0, /* clear */
1498 NULL,
1499 0);
1500 }
1501
1502 static int TISetRts (struct edgeport_port *port)
1503 {
1504 int port_number = port->port->number - port->port->serial->minor;
1505
1506 dbg ("%s", __FUNCTION__);
1507 port->shadow_mcr |= MCR_RTS;
1508
1509 return TIWriteCommandSync (port->port->serial->dev,
1510 UMPC_SET_CLR_RTS,
1511 (__u8)(UMPM_UART1_PORT + port_number),
1512 1, /* set */
1513 NULL,
1514 0);
1515 }
1516
1517 static int TIClearRts (struct edgeport_port *port)
1518 {
1519 int port_number = port->port->number - port->port->serial->minor;
1520
1521 dbg ("%s", __FUNCTION__);
1522 port->shadow_mcr &= ~MCR_RTS;
1523
1524 return TIWriteCommandSync (port->port->serial->dev,
1525 UMPC_SET_CLR_RTS,
1526 (__u8)(UMPM_UART1_PORT + port_number),
1527 0, /* clear */
1528 NULL,
1529 0);
1530 }
1531
1532 static int TISetLoopBack (struct edgeport_port *port)
1533 {
1534 int port_number = port->port->number - port->port->serial->minor;
1535
1536 dbg ("%s", __FUNCTION__);
1537
1538 return TIWriteCommandSync (port->port->serial->dev,
1539 UMPC_SET_CLR_LOOPBACK,
1540 (__u8)(UMPM_UART1_PORT + port_number),
1541 1, /* set */
1542 NULL,
1543 0);
1544 }
1545
1546 static int TIClearLoopBack (struct edgeport_port *port)
1547 {
1548 int port_number = port->port->number - port->port->serial->minor;
1549
1550 dbg ("%s", __FUNCTION__);
1551
1552 return TIWriteCommandSync (port->port->serial->dev,
1553 UMPC_SET_CLR_LOOPBACK,
1554 (__u8)(UMPM_UART1_PORT + port_number),
1555 0, /* clear */
1556 NULL,
1557 0);
1558 }
1559
1560 static int TISetBreak (struct edgeport_port *port)
1561 {
1562 int port_number = port->port->number - port->port->serial->minor;
1563
1564 dbg ("%s", __FUNCTION__);
1565
1566 return TIWriteCommandSync (port->port->serial->dev,
1567 UMPC_SET_CLR_BREAK,
1568 (__u8)(UMPM_UART1_PORT + port_number),
1569 1, /* set */
1570 NULL,
1571 0);
1572 }
1573
1574 static int TIClearBreak (struct edgeport_port *port)
1575 {
1576 int port_number = port->port->number - port->port->serial->minor;
1577
1578 dbg ("%s", __FUNCTION__);
1579
1580 return TIWriteCommandSync (port->port->serial->dev,
1581 UMPC_SET_CLR_BREAK,
1582 (__u8)(UMPM_UART1_PORT + port_number),
1583 0, /* clear */
1584 NULL,
1585 0);
1586 }
1587
1588 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1589 {
1590 int status = 0;
1591
1592 dbg ("%s - %x", __FUNCTION__, mcr);
1593
1594 if (mcr & MCR_DTR)
1595 status = TISetDtr (port);
1596 else
1597 status = TIClearDtr (port);
1598
1599 if (status)
1600 return status;
1601
1602 if (mcr & MCR_RTS)
1603 status = TISetRts (port);
1604 else
1605 status = TIClearRts (port);
1606
1607 if (status)
1608 return status;
1609
1610 if (mcr & MCR_LOOPBACK)
1611 status = TISetLoopBack (port);
1612 else
1613 status = TIClearLoopBack (port);
1614
1615 return status;
1616 }
1617
1618
1619
1620 /* Convert TI LSR to standard UART flags */
1621 static __u8 MapLineStatus (__u8 ti_lsr)
1622 {
1623 __u8 lsr = 0;
1624
1625 #define MAP_FLAG(flagUmp, flagUart) \
1626 if (ti_lsr & flagUmp) \
1627 lsr |= flagUart;
1628
1629 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1630 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1631 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1632 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1633 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* receive data available */
1634 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* transmit holding register empty */
1635
1636 #undef MAP_FLAG
1637
1638 return lsr;
1639 }
1640
1641 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1642 {
1643 struct async_icount *icount;
1644 struct tty_struct *tty;
1645
1646 dbg ("%s - %02x", __FUNCTION__, msr);
1647
1648 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1649 icount = &edge_port->icount;
1650
1651 /* update input line counters */
1652 if (msr & EDGEPORT_MSR_DELTA_CTS)
1653 icount->cts++;
1654 if (msr & EDGEPORT_MSR_DELTA_DSR)
1655 icount->dsr++;
1656 if (msr & EDGEPORT_MSR_DELTA_CD)
1657 icount->dcd++;
1658 if (msr & EDGEPORT_MSR_DELTA_RI)
1659 icount->rng++;
1660 wake_up_interruptible (&edge_port->delta_msr_wait);
1661 }
1662
1663 /* Save the new modem status */
1664 edge_port->shadow_msr = msr & 0xf0;
1665
1666 tty = edge_port->port->tty;
1667 /* handle CTS flow control */
1668 if (tty && C_CRTSCTS(tty)) {
1669 if (msr & EDGEPORT_MSR_CTS) {
1670 tty->hw_stopped = 0;
1671 tty_wakeup(tty);
1672 } else {
1673 tty->hw_stopped = 1;
1674 }
1675 }
1676
1677 return;
1678 }
1679
1680 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1681 {
1682 struct async_icount *icount;
1683 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1684
1685 dbg ("%s - %02x", __FUNCTION__, new_lsr);
1686
1687 edge_port->shadow_lsr = lsr;
1688
1689 if (new_lsr & LSR_BREAK) {
1690 /*
1691 * Parity and Framing errors only count if they
1692 * occur exclusive of a break being received.
1693 */
1694 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1695 }
1696
1697 /* Place LSR data byte into Rx buffer */
1698 if (lsr_data && edge_port->port->tty)
1699 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
1700
1701 /* update input line counters */
1702 icount = &edge_port->icount;
1703 if (new_lsr & LSR_BREAK)
1704 icount->brk++;
1705 if (new_lsr & LSR_OVER_ERR)
1706 icount->overrun++;
1707 if (new_lsr & LSR_PAR_ERR)
1708 icount->parity++;
1709 if (new_lsr & LSR_FRM_ERR)
1710 icount->frame++;
1711 }
1712
1713
1714 static void edge_interrupt_callback (struct urb *urb)
1715 {
1716 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
1717 struct usb_serial_port *port;
1718 struct edgeport_port *edge_port;
1719 unsigned char *data = urb->transfer_buffer;
1720 int length = urb->actual_length;
1721 int port_number;
1722 int function;
1723 int retval;
1724 __u8 lsr;
1725 __u8 msr;
1726 int status = urb->status;
1727
1728 dbg("%s", __FUNCTION__);
1729
1730 switch (status) {
1731 case 0:
1732 /* success */
1733 break;
1734 case -ECONNRESET:
1735 case -ENOENT:
1736 case -ESHUTDOWN:
1737 /* this urb is terminated, clean up */
1738 dbg("%s - urb shutting down with status: %d",
1739 __FUNCTION__, status);
1740 return;
1741 default:
1742 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1743 "%d\n", __FUNCTION__, status);
1744 goto exit;
1745 }
1746
1747 if (!length) {
1748 dbg ("%s - no data in urb", __FUNCTION__);
1749 goto exit;
1750 }
1751
1752 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
1753
1754 if (length != 2) {
1755 dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
1756 goto exit;
1757 }
1758
1759 port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1760 function = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1761 dbg ("%s - port_number %d, function %d, info 0x%x",
1762 __FUNCTION__, port_number, function, data[1]);
1763 port = edge_serial->serial->port[port_number];
1764 edge_port = usb_get_serial_port_data(port);
1765 if (!edge_port) {
1766 dbg ("%s - edge_port not found", __FUNCTION__);
1767 return;
1768 }
1769 switch (function) {
1770 case TIUMP_INTERRUPT_CODE_LSR:
1771 lsr = MapLineStatus(data[1]);
1772 if (lsr & UMP_UART_LSR_DATA_MASK) {
1773 /* Save the LSR event for bulk read completion routine */
1774 dbg ("%s - LSR Event Port %u LSR Status = %02x",
1775 __FUNCTION__, port_number, lsr);
1776 edge_port->lsr_event = 1;
1777 edge_port->lsr_mask = lsr;
1778 } else {
1779 dbg ("%s - ===== Port %d LSR Status = %02x ======",
1780 __FUNCTION__, port_number, lsr);
1781 handle_new_lsr (edge_port, 0, lsr, 0);
1782 }
1783 break;
1784
1785 case TIUMP_INTERRUPT_CODE_MSR: // MSR
1786 /* Copy MSR from UMP */
1787 msr = data[1];
1788 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1789 __FUNCTION__, port_number, msr);
1790 handle_new_msr (edge_port, msr);
1791 break;
1792
1793 default:
1794 dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
1795 __FUNCTION__, data[1]);
1796 break;
1797
1798 }
1799
1800 exit:
1801 retval = usb_submit_urb (urb, GFP_ATOMIC);
1802 if (retval)
1803 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1804 __FUNCTION__, retval);
1805 }
1806
1807 static void edge_bulk_in_callback (struct urb *urb)
1808 {
1809 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1810 unsigned char *data = urb->transfer_buffer;
1811 struct tty_struct *tty;
1812 int retval = 0;
1813 int port_number;
1814 int status = urb->status;
1815
1816 dbg("%s", __FUNCTION__);
1817
1818 switch (status) {
1819 case 0:
1820 /* success */
1821 break;
1822 case -ECONNRESET:
1823 case -ENOENT:
1824 case -ESHUTDOWN:
1825 /* this urb is terminated, clean up */
1826 dbg("%s - urb shutting down with status: %d",
1827 __FUNCTION__, status);
1828 return;
1829 default:
1830 dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
1831 __FUNCTION__, status);
1832 }
1833
1834 if (status == -EPIPE)
1835 goto exit;
1836
1837 if (status) {
1838 dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__);
1839 return;
1840 }
1841
1842 port_number = edge_port->port->number - edge_port->port->serial->minor;
1843
1844 if (edge_port->lsr_event) {
1845 edge_port->lsr_event = 0;
1846 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1847 __FUNCTION__, port_number, edge_port->lsr_mask, *data);
1848 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1849 /* Adjust buffer length/pointer */
1850 --urb->actual_length;
1851 ++data;
1852 }
1853
1854 tty = edge_port->port->tty;
1855 if (tty && urb->actual_length) {
1856 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, urb->actual_length, data);
1857
1858 if (edge_port->close_pending) {
1859 dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
1860 } else {
1861 edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length);
1862 }
1863 edge_port->icount.rx += urb->actual_length;
1864 }
1865
1866 exit:
1867 /* continue read unless stopped */
1868 spin_lock(&edge_port->ep_lock);
1869 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1870 urb->dev = edge_port->port->serial->dev;
1871 retval = usb_submit_urb(urb, GFP_ATOMIC);
1872 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1873 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1874 }
1875 spin_unlock(&edge_port->ep_lock);
1876 if (retval)
1877 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1878 __FUNCTION__, retval);
1879 }
1880
1881 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
1882 {
1883 int cnt;
1884
1885 do {
1886 cnt = tty_buffer_request_room(tty, length);
1887 if (cnt < length) {
1888 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1889 __FUNCTION__, length - cnt);
1890 if(cnt == 0)
1891 break;
1892 }
1893 tty_insert_flip_string(tty, data, cnt);
1894 data += cnt;
1895 length -= cnt;
1896 } while (length > 0);
1897
1898 tty_flip_buffer_push(tty);
1899 }
1900
1901 static void edge_bulk_out_callback (struct urb *urb)
1902 {
1903 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1904 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1905 int status = urb->status;
1906
1907 dbg ("%s - port %d", __FUNCTION__, port->number);
1908
1909 edge_port->ep_write_urb_in_use = 0;
1910
1911 switch (status) {
1912 case 0:
1913 /* success */
1914 break;
1915 case -ECONNRESET:
1916 case -ENOENT:
1917 case -ESHUTDOWN:
1918 /* this urb is terminated, clean up */
1919 dbg("%s - urb shutting down with status: %d",
1920 __FUNCTION__, status);
1921 return;
1922 default:
1923 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1924 "received: %d\n", __FUNCTION__, status);
1925 }
1926
1927 /* send any buffered data */
1928 edge_send(port);
1929 }
1930
1931 static int edge_open (struct usb_serial_port *port, struct file * filp)
1932 {
1933 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1934 struct edgeport_serial *edge_serial;
1935 struct usb_device *dev;
1936 struct urb *urb;
1937 int port_number;
1938 int status;
1939 u16 open_settings;
1940 u8 transaction_timeout;
1941
1942 dbg("%s - port %d", __FUNCTION__, port->number);
1943
1944 if (edge_port == NULL)
1945 return -ENODEV;
1946
1947 if (port->tty)
1948 port->tty->low_latency = low_latency;
1949
1950 port_number = port->number - port->serial->minor;
1951 switch (port_number) {
1952 case 0:
1953 edge_port->uart_base = UMPMEM_BASE_UART1;
1954 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1955 break;
1956 case 1:
1957 edge_port->uart_base = UMPMEM_BASE_UART2;
1958 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1959 break;
1960 default:
1961 dev_err (&port->dev, "Unknown port number!!!\n");
1962 return -ENODEV;
1963 }
1964
1965 dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1966 __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
1967
1968 dev = port->serial->dev;
1969
1970 memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1971 init_waitqueue_head (&edge_port->delta_msr_wait);
1972
1973 /* turn off loopback */
1974 status = TIClearLoopBack (edge_port);
1975 if (status) {
1976 dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n",
1977 __FUNCTION__, status);
1978 return status;
1979 }
1980
1981 /* set up the port settings */
1982 edge_set_termios (port, port->tty->termios);
1983
1984 /* open up the port */
1985
1986 /* milliseconds to timeout for DMA transfer */
1987 transaction_timeout = 2;
1988
1989 edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1990
1991 // milliseconds to timeout for DMA transfer
1992 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1993 UMP_PIPE_TRANS_TIMEOUT_ENA |
1994 (transaction_timeout << 2));
1995
1996 dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
1997
1998 /* Tell TI to open and start the port */
1999 status = TIWriteCommandSync (dev,
2000 UMPC_OPEN_PORT,
2001 (u8)(UMPM_UART1_PORT + port_number),
2002 open_settings,
2003 NULL,
2004 0);
2005 if (status) {
2006 dev_err(&port->dev,"%s - cannot send open command, %d\n", __FUNCTION__, status);
2007 return status;
2008 }
2009
2010 /* Start the DMA? */
2011 status = TIWriteCommandSync (dev,
2012 UMPC_START_PORT,
2013 (u8)(UMPM_UART1_PORT + port_number),
2014 0,
2015 NULL,
2016 0);
2017 if (status) {
2018 dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __FUNCTION__, status);
2019 return status;
2020 }
2021
2022 /* Clear TX and RX buffers in UMP */
2023 status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
2024 if (status) {
2025 dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __FUNCTION__, status);
2026 return status;
2027 }
2028
2029 /* Read Initial MSR */
2030 status = TIReadVendorRequestSync (dev,
2031 UMPC_READ_MSR, // Request
2032 0, // wValue
2033 (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
2034 &edge_port->shadow_msr, // TransferBuffer
2035 1); // TransferBufferLength
2036 if (status) {
2037 dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __FUNCTION__, status);
2038 return status;
2039 }
2040
2041 dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
2042
2043 /* Set Initial MCR */
2044 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
2045 dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr);
2046
2047 edge_serial = edge_port->edge_serial;
2048 if (mutex_lock_interruptible(&edge_serial->es_lock))
2049 return -ERESTARTSYS;
2050 if (edge_serial->num_ports_open == 0) {
2051 /* we are the first port to be opened, let's post the interrupt urb */
2052 urb = edge_serial->serial->port[0]->interrupt_in_urb;
2053 if (!urb) {
2054 dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
2055 status = -EINVAL;
2056 goto release_es_lock;
2057 }
2058 urb->complete = edge_interrupt_callback;
2059 urb->context = edge_serial;
2060 urb->dev = dev;
2061 status = usb_submit_urb (urb, GFP_KERNEL);
2062 if (status) {
2063 dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2064 goto release_es_lock;
2065 }
2066 }
2067
2068 /*
2069 * reset the data toggle on the bulk endpoints to work around bug in
2070 * host controllers where things get out of sync some times
2071 */
2072 usb_clear_halt (dev, port->write_urb->pipe);
2073 usb_clear_halt (dev, port->read_urb->pipe);
2074
2075 /* start up our bulk read urb */
2076 urb = port->read_urb;
2077 if (!urb) {
2078 dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
2079 status = -EINVAL;
2080 goto unlink_int_urb;
2081 }
2082 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2083 urb->complete = edge_bulk_in_callback;
2084 urb->context = edge_port;
2085 urb->dev = dev;
2086 status = usb_submit_urb (urb, GFP_KERNEL);
2087 if (status) {
2088 dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2089 goto unlink_int_urb;
2090 }
2091
2092 ++edge_serial->num_ports_open;
2093
2094 dbg("%s - exited", __FUNCTION__);
2095
2096 goto release_es_lock;
2097
2098 unlink_int_urb:
2099 if (edge_port->edge_serial->num_ports_open == 0)
2100 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2101 release_es_lock:
2102 mutex_unlock(&edge_serial->es_lock);
2103 return status;
2104 }
2105
2106 static void edge_close (struct usb_serial_port *port, struct file *filp)
2107 {
2108 struct edgeport_serial *edge_serial;
2109 struct edgeport_port *edge_port;
2110 int port_number;
2111 int status;
2112
2113 dbg("%s - port %d", __FUNCTION__, port->number);
2114
2115 edge_serial = usb_get_serial_data(port->serial);
2116 edge_port = usb_get_serial_port_data(port);
2117 if ((edge_serial == NULL) || (edge_port == NULL))
2118 return;
2119
2120 /* The bulkreadcompletion routine will check
2121 * this flag and dump add read data */
2122 edge_port->close_pending = 1;
2123
2124 /* chase the port close and flush */
2125 TIChasePort (edge_port, (HZ*closing_wait)/100, 1);
2126
2127 usb_kill_urb(port->read_urb);
2128 usb_kill_urb(port->write_urb);
2129 edge_port->ep_write_urb_in_use = 0;
2130
2131 /* assuming we can still talk to the device,
2132 * send a close port command to it */
2133 dbg("%s - send umpc_close_port", __FUNCTION__);
2134 port_number = port->number - port->serial->minor;
2135 status = TIWriteCommandSync (port->serial->dev,
2136 UMPC_CLOSE_PORT,
2137 (__u8)(UMPM_UART1_PORT + port_number),
2138 0,
2139 NULL,
2140 0);
2141 mutex_lock(&edge_serial->es_lock);
2142 --edge_port->edge_serial->num_ports_open;
2143 if (edge_port->edge_serial->num_ports_open <= 0) {
2144 /* last port is now closed, let's shut down our interrupt urb */
2145 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2146 edge_port->edge_serial->num_ports_open = 0;
2147 }
2148 mutex_unlock(&edge_serial->es_lock);
2149 edge_port->close_pending = 0;
2150
2151 dbg("%s - exited", __FUNCTION__);
2152 }
2153
2154 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
2155 {
2156 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2157 unsigned long flags;
2158
2159 dbg("%s - port %d", __FUNCTION__, port->number);
2160
2161 if (count == 0) {
2162 dbg("%s - write request of 0 bytes", __FUNCTION__);
2163 return 0;
2164 }
2165
2166 if (edge_port == NULL)
2167 return -ENODEV;
2168 if (edge_port->close_pending == 1)
2169 return -ENODEV;
2170
2171 spin_lock_irqsave(&edge_port->ep_lock, flags);
2172 count = edge_buf_put(edge_port->ep_out_buf, data, count);
2173 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2174
2175 edge_send(port);
2176
2177 return count;
2178 }
2179
2180 static void edge_send(struct usb_serial_port *port)
2181 {
2182 int count, result;
2183 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2184 struct tty_struct *tty = port->tty;
2185 unsigned long flags;
2186
2187
2188 dbg("%s - port %d", __FUNCTION__, port->number);
2189
2190 spin_lock_irqsave(&edge_port->ep_lock, flags);
2191
2192 if (edge_port->ep_write_urb_in_use) {
2193 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2194 return;
2195 }
2196
2197 count = edge_buf_get(edge_port->ep_out_buf,
2198 port->write_urb->transfer_buffer,
2199 port->bulk_out_size);
2200
2201 if (count == 0) {
2202 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2203 return;
2204 }
2205
2206 edge_port->ep_write_urb_in_use = 1;
2207
2208 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2209
2210 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
2211
2212 /* set up our urb */
2213 usb_fill_bulk_urb (port->write_urb, port->serial->dev,
2214 usb_sndbulkpipe (port->serial->dev,
2215 port->bulk_out_endpointAddress),
2216 port->write_urb->transfer_buffer, count,
2217 edge_bulk_out_callback,
2218 port);
2219
2220 /* send the data out the bulk port */
2221 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2222 if (result) {
2223 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
2224 edge_port->ep_write_urb_in_use = 0;
2225 // TODO: reschedule edge_send
2226 } else {
2227 edge_port->icount.tx += count;
2228 }
2229
2230 /* wakeup any process waiting for writes to complete */
2231 /* there is now more room in the buffer for new writes */
2232 if (tty) {
2233 /* let the tty driver wakeup if it has a special write_wakeup function */
2234 tty_wakeup(tty);
2235 }
2236 }
2237
2238 static int edge_write_room (struct usb_serial_port *port)
2239 {
2240 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2241 int room = 0;
2242 unsigned long flags;
2243
2244 dbg("%s - port %d", __FUNCTION__, port->number);
2245
2246 if (edge_port == NULL)
2247 return -ENODEV;
2248 if (edge_port->close_pending == 1)
2249 return -ENODEV;
2250
2251 spin_lock_irqsave(&edge_port->ep_lock, flags);
2252 room = edge_buf_space_avail(edge_port->ep_out_buf);
2253 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2254
2255 dbg("%s - returns %d", __FUNCTION__, room);
2256 return room;
2257 }
2258
2259 static int edge_chars_in_buffer (struct usb_serial_port *port)
2260 {
2261 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2262 int chars = 0;
2263 unsigned long flags;
2264
2265 dbg("%s - port %d", __FUNCTION__, port->number);
2266
2267 if (edge_port == NULL)
2268 return -ENODEV;
2269 if (edge_port->close_pending == 1)
2270 return -ENODEV;
2271
2272 spin_lock_irqsave(&edge_port->ep_lock, flags);
2273 chars = edge_buf_data_avail(edge_port->ep_out_buf);
2274 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2275
2276 dbg ("%s - returns %d", __FUNCTION__, chars);
2277 return chars;
2278 }
2279
2280 static void edge_throttle (struct usb_serial_port *port)
2281 {
2282 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2283 struct tty_struct *tty;
2284 int status;
2285
2286 dbg("%s - port %d", __FUNCTION__, port->number);
2287
2288 if (edge_port == NULL)
2289 return;
2290
2291 tty = port->tty;
2292 if (!tty) {
2293 dbg ("%s - no tty available", __FUNCTION__);
2294 return;
2295 }
2296
2297 /* if we are implementing XON/XOFF, send the stop character */
2298 if (I_IXOFF(tty)) {
2299 unsigned char stop_char = STOP_CHAR(tty);
2300 status = edge_write (port, &stop_char, 1);
2301 if (status <= 0) {
2302 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __FUNCTION__, status);
2303 }
2304 }
2305
2306 /* if we are implementing RTS/CTS, stop reads */
2307 /* and the Edgeport will clear the RTS line */
2308 if (C_CRTSCTS(tty))
2309 stop_read(edge_port);
2310
2311 }
2312
2313 static void edge_unthrottle (struct usb_serial_port *port)
2314 {
2315 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2316 struct tty_struct *tty;
2317 int status;
2318
2319 dbg("%s - port %d", __FUNCTION__, port->number);
2320
2321 if (edge_port == NULL)
2322 return;
2323
2324 tty = port->tty;
2325 if (!tty) {
2326 dbg ("%s - no tty available", __FUNCTION__);
2327 return;
2328 }
2329
2330 /* if we are implementing XON/XOFF, send the start character */
2331 if (I_IXOFF(tty)) {
2332 unsigned char start_char = START_CHAR(tty);
2333 status = edge_write (port, &start_char, 1);
2334 if (status <= 0) {
2335 dev_err(&port->dev, "%s - failed to write start character, %d\n", __FUNCTION__, status);
2336 }
2337 }
2338
2339 /* if we are implementing RTS/CTS, restart reads */
2340 /* are the Edgeport will assert the RTS line */
2341 if (C_CRTSCTS(tty)) {
2342 status = restart_read(edge_port);
2343 if (status)
2344 dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2345 }
2346
2347 }
2348
2349 static void stop_read(struct edgeport_port *edge_port)
2350 {
2351 unsigned long flags;
2352
2353 spin_lock_irqsave(&edge_port->ep_lock, flags);
2354
2355 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2356 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2357 edge_port->shadow_mcr &= ~MCR_RTS;
2358
2359 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2360 }
2361
2362 static int restart_read(struct edgeport_port *edge_port)
2363 {
2364 struct urb *urb;
2365 int status = 0;
2366 unsigned long flags;
2367
2368 spin_lock_irqsave(&edge_port->ep_lock, flags);
2369
2370 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2371 urb = edge_port->port->read_urb;
2372 urb->complete = edge_bulk_in_callback;
2373 urb->context = edge_port;
2374 urb->dev = edge_port->port->serial->dev;
2375 status = usb_submit_urb(urb, GFP_ATOMIC);
2376 }
2377 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2378 edge_port->shadow_mcr |= MCR_RTS;
2379
2380 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2381
2382 return status;
2383 }
2384
2385 static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios)
2386 {
2387 struct ump_uart_config *config;
2388 struct tty_struct *tty;
2389 int baud;
2390 unsigned cflag;
2391 int status;
2392 int port_number = edge_port->port->number - edge_port->port->serial->minor;
2393
2394 dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2395
2396 tty = edge_port->port->tty;
2397
2398 config = kmalloc (sizeof (*config), GFP_KERNEL);
2399 if (!config) {
2400 dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__);
2401 return;
2402 }
2403
2404 cflag = tty->termios->c_cflag;
2405
2406 config->wFlags = 0;
2407
2408 /* These flags must be set */
2409 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2410 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2411 config->bUartMode = (__u8)(edge_port->bUartMode);
2412
2413 switch (cflag & CSIZE) {
2414 case CS5:
2415 config->bDataBits = UMP_UART_CHAR5BITS;
2416 dbg ("%s - data bits = 5", __FUNCTION__);
2417 break;
2418 case CS6:
2419 config->bDataBits = UMP_UART_CHAR6BITS;
2420 dbg ("%s - data bits = 6", __FUNCTION__);
2421 break;
2422 case CS7:
2423 config->bDataBits = UMP_UART_CHAR7BITS;
2424 dbg ("%s - data bits = 7", __FUNCTION__);
2425 break;
2426 default:
2427 case CS8:
2428 config->bDataBits = UMP_UART_CHAR8BITS;
2429 dbg ("%s - data bits = 8", __FUNCTION__);
2430 break;
2431 }
2432
2433 if (cflag & PARENB) {
2434 if (cflag & PARODD) {
2435 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2436 config->bParity = UMP_UART_ODDPARITY;
2437 dbg("%s - parity = odd", __FUNCTION__);
2438 } else {
2439 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2440 config->bParity = UMP_UART_EVENPARITY;
2441 dbg("%s - parity = even", __FUNCTION__);
2442 }
2443 } else {
2444 config->bParity = UMP_UART_NOPARITY;
2445 dbg("%s - parity = none", __FUNCTION__);
2446 }
2447
2448 if (cflag & CSTOPB) {
2449 config->bStopBits = UMP_UART_STOPBIT2;
2450 dbg("%s - stop bits = 2", __FUNCTION__);
2451 } else {
2452 config->bStopBits = UMP_UART_STOPBIT1;
2453 dbg("%s - stop bits = 1", __FUNCTION__);
2454 }
2455
2456 /* figure out the flow control settings */
2457 if (cflag & CRTSCTS) {
2458 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2459 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2460 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2461 } else {
2462 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2463 tty->hw_stopped = 0;
2464 restart_read(edge_port);
2465 }
2466
2467 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2468 if (I_IXOFF(tty) || I_IXON(tty)) {
2469 config->cXon = START_CHAR(tty);
2470 config->cXoff = STOP_CHAR(tty);
2471
2472 /* if we are implementing INBOUND XON/XOFF */
2473 if (I_IXOFF(tty)) {
2474 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2475 dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2476 __FUNCTION__, config->cXon, config->cXoff);
2477 } else {
2478 dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2479 }
2480
2481 /* if we are implementing OUTBOUND XON/XOFF */
2482 if (I_IXON(tty)) {
2483 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2484 dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2485 __FUNCTION__, config->cXon, config->cXoff);
2486 } else {
2487 dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2488 }
2489 }
2490
2491 tty->termios->c_cflag &= ~CMSPAR;
2492
2493 /* Round the baud rate */
2494 baud = tty_get_baud_rate(tty);
2495 if (!baud) {
2496 /* pick a default, any default... */
2497 baud = 9600;
2498 } else
2499 tty_encode_baud_rate(tty, baud, baud);
2500
2501 edge_port->baud_rate = baud;
2502 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2503
2504 /* FIXME: Recompute actual baud from divisor here */
2505
2506 dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
2507
2508 dbg ("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2509 dbg ("wFlags: 0x%x", config->wFlags);
2510 dbg ("bDataBits: %d", config->bDataBits);
2511 dbg ("bParity: %d", config->bParity);
2512 dbg ("bStopBits: %d", config->bStopBits);
2513 dbg ("cXon: %d", config->cXon);
2514 dbg ("cXoff: %d", config->cXoff);
2515 dbg ("bUartMode: %d", config->bUartMode);
2516
2517 /* move the word values into big endian mode */
2518 cpu_to_be16s (&config->wFlags);
2519 cpu_to_be16s (&config->wBaudRate);
2520
2521 status = TIWriteCommandSync (edge_port->port->serial->dev,
2522 UMPC_SET_CONFIG,
2523 (__u8)(UMPM_UART1_PORT + port_number),
2524 0,
2525 (__u8 *)config,
2526 sizeof(*config));
2527 if (status) {
2528 dbg ("%s - error %d when trying to write config to device",
2529 __FUNCTION__, status);
2530 }
2531
2532 kfree (config);
2533
2534 return;
2535 }
2536
2537 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
2538 {
2539 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2540 struct tty_struct *tty = port->tty;
2541 unsigned int cflag;
2542
2543 cflag = tty->termios->c_cflag;
2544
2545 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2546 tty->termios->c_cflag, tty->termios->c_iflag);
2547 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2548 old_termios->c_cflag, old_termios->c_iflag);
2549
2550 dbg("%s - port %d", __FUNCTION__, port->number);
2551
2552 if (edge_port == NULL)
2553 return;
2554
2555 /* change the port settings to the new ones specified */
2556 change_port_settings (edge_port, old_termios);
2557
2558 return;
2559 }
2560
2561 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
2562 {
2563 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2564 unsigned int mcr;
2565
2566 dbg("%s - port %d", __FUNCTION__, port->number);
2567
2568 mcr = edge_port->shadow_mcr;
2569 if (set & TIOCM_RTS)
2570 mcr |= MCR_RTS;
2571 if (set & TIOCM_DTR)
2572 mcr |= MCR_DTR;
2573 if (set & TIOCM_LOOP)
2574 mcr |= MCR_LOOPBACK;
2575
2576 if (clear & TIOCM_RTS)
2577 mcr &= ~MCR_RTS;
2578 if (clear & TIOCM_DTR)
2579 mcr &= ~MCR_DTR;
2580 if (clear & TIOCM_LOOP)
2581 mcr &= ~MCR_LOOPBACK;
2582
2583 edge_port->shadow_mcr = mcr;
2584
2585 TIRestoreMCR (edge_port, mcr);
2586
2587 return 0;
2588 }
2589
2590 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
2591 {
2592 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2593 unsigned int result = 0;
2594 unsigned int msr;
2595 unsigned int mcr;
2596
2597 dbg("%s - port %d", __FUNCTION__, port->number);
2598
2599 msr = edge_port->shadow_msr;
2600 mcr = edge_port->shadow_mcr;
2601 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2602 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2603 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2604 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2605 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2606 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2607
2608
2609 dbg("%s -- %x", __FUNCTION__, result);
2610
2611 return result;
2612 }
2613
2614 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
2615 {
2616 struct serial_struct tmp;
2617
2618 if (!retinfo)
2619 return -EFAULT;
2620
2621 memset(&tmp, 0, sizeof(tmp));
2622
2623 tmp.type = PORT_16550A;
2624 tmp.line = edge_port->port->serial->minor;
2625 tmp.port = edge_port->port->number;
2626 tmp.irq = 0;
2627 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2628 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2629 tmp.baud_base = 9600;
2630 tmp.close_delay = 5*HZ;
2631 tmp.closing_wait = closing_wait;
2632 // tmp.custom_divisor = state->custom_divisor;
2633 // tmp.hub6 = state->hub6;
2634 // tmp.io_type = state->io_type;
2635
2636
2637 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2638 return -EFAULT;
2639 return 0;
2640 }
2641
2642 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2643 {
2644 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2645 struct async_icount cnow;
2646 struct async_icount cprev;
2647
2648 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2649
2650 switch (cmd) {
2651 case TIOCINQ:
2652 dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
2653 // return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2654 break;
2655
2656 case TIOCSERGETLSR:
2657 dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2658 // return get_lsr_info(edge_port, (unsigned int *) arg);
2659 break;
2660
2661 case TIOCGSERIAL:
2662 dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2663 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
2664 break;
2665
2666 case TIOCSSERIAL:
2667 dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2668 break;
2669
2670 case TIOCMIWAIT:
2671 dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2672 cprev = edge_port->icount;
2673 while (1) {
2674 interruptible_sleep_on(&edge_port->delta_msr_wait);
2675 /* see if a signal did it */
2676 if (signal_pending(current))
2677 return -ERESTARTSYS;
2678 cnow = edge_port->icount;
2679 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2680 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2681 return -EIO; /* no change => error */
2682 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2683 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2684 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2685 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2686 return 0;
2687 }
2688 cprev = cnow;
2689 }
2690 /* not reached */
2691 break;
2692
2693 case TIOCGICOUNT:
2694 dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2695 port->number, edge_port->icount.rx, edge_port->icount.tx);
2696 if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2697 return -EFAULT;
2698 return 0;
2699 }
2700
2701 return -ENOIOCTLCMD;
2702 }
2703
2704 static void edge_break (struct usb_serial_port *port, int break_state)
2705 {
2706 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2707 int status;
2708
2709 dbg ("%s - state = %d", __FUNCTION__, break_state);
2710
2711 /* chase the port close */
2712 TIChasePort (edge_port, 0, 0);
2713
2714 if (break_state == -1) {
2715 status = TISetBreak (edge_port);
2716 } else {
2717 status = TIClearBreak (edge_port);
2718 }
2719 if (status) {
2720 dbg ("%s - error %d sending break set/clear command.",
2721 __FUNCTION__, status);
2722 }
2723 }
2724
2725 static int edge_startup (struct usb_serial *serial)
2726 {
2727 struct edgeport_serial *edge_serial;
2728 struct edgeport_port *edge_port;
2729 struct usb_device *dev;
2730 int status;
2731 int i;
2732
2733 dev = serial->dev;
2734
2735 /* create our private serial structure */
2736 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2737 if (edge_serial == NULL) {
2738 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2739 return -ENOMEM;
2740 }
2741 mutex_init(&edge_serial->es_lock);
2742 edge_serial->serial = serial;
2743 usb_set_serial_data(serial, edge_serial);
2744
2745 status = TIDownloadFirmware (edge_serial);
2746 if (status) {
2747 kfree (edge_serial);
2748 return status;
2749 }
2750
2751 /* set up our port private structures */
2752 for (i = 0; i < serial->num_ports; ++i) {
2753 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2754 if (edge_port == NULL) {
2755 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2756 goto cleanup;
2757 }
2758 spin_lock_init(&edge_port->ep_lock);
2759 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2760 if (edge_port->ep_out_buf == NULL) {
2761 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2762 kfree(edge_port);
2763 goto cleanup;
2764 }
2765 edge_port->port = serial->port[i];
2766 edge_port->edge_serial = edge_serial;
2767 usb_set_serial_port_data(serial->port[i], edge_port);
2768 edge_port->bUartMode = default_uart_mode;
2769 }
2770
2771 return 0;
2772
2773 cleanup:
2774 for (--i; i>=0; --i) {
2775 edge_port = usb_get_serial_port_data(serial->port[i]);
2776 edge_buf_free(edge_port->ep_out_buf);
2777 kfree(edge_port);
2778 usb_set_serial_port_data(serial->port[i], NULL);
2779 }
2780 kfree (edge_serial);
2781 usb_set_serial_data(serial, NULL);
2782 return -ENOMEM;
2783 }
2784
2785 static void edge_shutdown (struct usb_serial *serial)
2786 {
2787 int i;
2788 struct edgeport_port *edge_port;
2789
2790 dbg ("%s", __FUNCTION__);
2791
2792 for (i = 0; i < serial->num_ports; ++i) {
2793 edge_port = usb_get_serial_port_data(serial->port[i]);
2794 edge_remove_sysfs_attrs(edge_port->port);
2795 edge_buf_free(edge_port->ep_out_buf);
2796 kfree(edge_port);
2797 usb_set_serial_port_data(serial->port[i], NULL);
2798 }
2799 kfree(usb_get_serial_data(serial));
2800 usb_set_serial_data(serial, NULL);
2801 }
2802
2803
2804 /* Sysfs Attributes */
2805
2806 static ssize_t show_uart_mode(struct device *dev,
2807 struct device_attribute *attr, char *buf)
2808 {
2809 struct usb_serial_port *port = to_usb_serial_port(dev);
2810 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2811
2812 return sprintf(buf, "%d\n", edge_port->bUartMode);
2813 }
2814
2815 static ssize_t store_uart_mode(struct device *dev,
2816 struct device_attribute *attr, const char *valbuf, size_t count)
2817 {
2818 struct usb_serial_port *port = to_usb_serial_port(dev);
2819 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2820 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2821
2822 dbg("%s: setting uart_mode = %d", __FUNCTION__, v);
2823
2824 if (v < 256)
2825 edge_port->bUartMode = v;
2826 else
2827 dev_err(dev, "%s - uart_mode %d is invalid\n", __FUNCTION__, v);
2828
2829 return count;
2830 }
2831
2832 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, store_uart_mode);
2833
2834 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2835 {
2836 return device_create_file(&port->dev, &dev_attr_uart_mode);
2837 }
2838
2839 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2840 {
2841 device_remove_file(&port->dev, &dev_attr_uart_mode);
2842 return 0;
2843 }
2844
2845
2846 /* Circular Buffer */
2847
2848 /*
2849 * edge_buf_alloc
2850 *
2851 * Allocate a circular buffer and all associated memory.
2852 */
2853
2854 static struct edge_buf *edge_buf_alloc(unsigned int size)
2855 {
2856 struct edge_buf *eb;
2857
2858
2859 if (size == 0)
2860 return NULL;
2861
2862 eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2863 if (eb == NULL)
2864 return NULL;
2865
2866 eb->buf_buf = kmalloc(size, GFP_KERNEL);
2867 if (eb->buf_buf == NULL) {
2868 kfree(eb);
2869 return NULL;
2870 }
2871
2872 eb->buf_size = size;
2873 eb->buf_get = eb->buf_put = eb->buf_buf;
2874
2875 return eb;
2876 }
2877
2878
2879 /*
2880 * edge_buf_free
2881 *
2882 * Free the buffer and all associated memory.
2883 */
2884
2885 static void edge_buf_free(struct edge_buf *eb)
2886 {
2887 if (eb) {
2888 kfree(eb->buf_buf);
2889 kfree(eb);
2890 }
2891 }
2892
2893
2894 /*
2895 * edge_buf_clear
2896 *
2897 * Clear out all data in the circular buffer.
2898 */
2899
2900 static void edge_buf_clear(struct edge_buf *eb)
2901 {
2902 if (eb != NULL)
2903 eb->buf_get = eb->buf_put;
2904 /* equivalent to a get of all data available */
2905 }
2906
2907
2908 /*
2909 * edge_buf_data_avail
2910 *
2911 * Return the number of bytes of data available in the circular
2912 * buffer.
2913 */
2914
2915 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2916 {
2917 if (eb != NULL)
2918 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2919 else
2920 return 0;
2921 }
2922
2923
2924 /*
2925 * edge_buf_space_avail
2926 *
2927 * Return the number of bytes of space available in the circular
2928 * buffer.
2929 */
2930
2931 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2932 {
2933 if (eb != NULL)
2934 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2935 else
2936 return 0;
2937 }
2938
2939
2940 /*
2941 * edge_buf_put
2942 *
2943 * Copy data data from a user buffer and put it into the circular buffer.
2944 * Restrict to the amount of space available.
2945 *
2946 * Return the number of bytes copied.
2947 */
2948
2949 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2950 unsigned int count)
2951 {
2952 unsigned int len;
2953
2954
2955 if (eb == NULL)
2956 return 0;
2957
2958 len = edge_buf_space_avail(eb);
2959 if (count > len)
2960 count = len;
2961
2962 if (count == 0)
2963 return 0;
2964
2965 len = eb->buf_buf + eb->buf_size - eb->buf_put;
2966 if (count > len) {
2967 memcpy(eb->buf_put, buf, len);
2968 memcpy(eb->buf_buf, buf+len, count - len);
2969 eb->buf_put = eb->buf_buf + count - len;
2970 } else {
2971 memcpy(eb->buf_put, buf, count);
2972 if (count < len)
2973 eb->buf_put += count;
2974 else /* count == len */
2975 eb->buf_put = eb->buf_buf;
2976 }
2977
2978 return count;
2979 }
2980
2981
2982 /*
2983 * edge_buf_get
2984 *
2985 * Get data from the circular buffer and copy to the given buffer.
2986 * Restrict to the amount of data available.
2987 *
2988 * Return the number of bytes copied.
2989 */
2990
2991 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2992 unsigned int count)
2993 {
2994 unsigned int len;
2995
2996
2997 if (eb == NULL)
2998 return 0;
2999
3000 len = edge_buf_data_avail(eb);
3001 if (count > len)
3002 count = len;
3003
3004 if (count == 0)
3005 return 0;
3006
3007 len = eb->buf_buf + eb->buf_size - eb->buf_get;
3008 if (count > len) {
3009 memcpy(buf, eb->buf_get, len);
3010 memcpy(buf+len, eb->buf_buf, count - len);
3011 eb->buf_get = eb->buf_buf + count - len;
3012 } else {
3013 memcpy(buf, eb->buf_get, count);
3014 if (count < len)
3015 eb->buf_get += count;
3016 else /* count == len */
3017 eb->buf_get = eb->buf_buf;
3018 }
3019
3020 return count;
3021 }
3022
3023
3024 static struct usb_serial_driver edgeport_1port_device = {
3025 .driver = {
3026 .owner = THIS_MODULE,
3027 .name = "edgeport_ti_1",
3028 },
3029 .description = "Edgeport TI 1 port adapter",
3030 .usb_driver = &io_driver,
3031 .id_table = edgeport_1port_id_table,
3032 .num_interrupt_in = 1,
3033 .num_bulk_in = 1,
3034 .num_bulk_out = 1,
3035 .num_ports = 1,
3036 .open = edge_open,
3037 .close = edge_close,
3038 .throttle = edge_throttle,
3039 .unthrottle = edge_unthrottle,
3040 .attach = edge_startup,
3041 .shutdown = edge_shutdown,
3042 .port_probe = edge_create_sysfs_attrs,
3043 .ioctl = edge_ioctl,
3044 .set_termios = edge_set_termios,
3045 .tiocmget = edge_tiocmget,
3046 .tiocmset = edge_tiocmset,
3047 .write = edge_write,
3048 .write_room = edge_write_room,
3049 .chars_in_buffer = edge_chars_in_buffer,
3050 .break_ctl = edge_break,
3051 .read_int_callback = edge_interrupt_callback,
3052 .read_bulk_callback = edge_bulk_in_callback,
3053 .write_bulk_callback = edge_bulk_out_callback,
3054 };
3055
3056 static struct usb_serial_driver edgeport_2port_device = {
3057 .driver = {
3058 .owner = THIS_MODULE,
3059 .name = "edgeport_ti_2",
3060 },
3061 .description = "Edgeport TI 2 port adapter",
3062 .usb_driver = &io_driver,
3063 .id_table = edgeport_2port_id_table,
3064 .num_interrupt_in = 1,
3065 .num_bulk_in = 2,
3066 .num_bulk_out = 2,
3067 .num_ports = 2,
3068 .open = edge_open,
3069 .close = edge_close,
3070 .throttle = edge_throttle,
3071 .unthrottle = edge_unthrottle,
3072 .attach = edge_startup,
3073 .shutdown = edge_shutdown,
3074 .port_probe = edge_create_sysfs_attrs,
3075 .ioctl = edge_ioctl,
3076 .set_termios = edge_set_termios,
3077 .tiocmget = edge_tiocmget,
3078 .tiocmset = edge_tiocmset,
3079 .write = edge_write,
3080 .write_room = edge_write_room,
3081 .chars_in_buffer = edge_chars_in_buffer,
3082 .break_ctl = edge_break,
3083 .read_int_callback = edge_interrupt_callback,
3084 .read_bulk_callback = edge_bulk_in_callback,
3085 .write_bulk_callback = edge_bulk_out_callback,
3086 };
3087
3088
3089 static int __init edgeport_init(void)
3090 {
3091 int retval;
3092 retval = usb_serial_register(&edgeport_1port_device);
3093 if (retval)
3094 goto failed_1port_device_register;
3095 retval = usb_serial_register(&edgeport_2port_device);
3096 if (retval)
3097 goto failed_2port_device_register;
3098 retval = usb_register(&io_driver);
3099 if (retval)
3100 goto failed_usb_register;
3101 info(DRIVER_DESC " " DRIVER_VERSION);
3102 return 0;
3103 failed_usb_register:
3104 usb_serial_deregister(&edgeport_2port_device);
3105 failed_2port_device_register:
3106 usb_serial_deregister(&edgeport_1port_device);
3107 failed_1port_device_register:
3108 return retval;
3109 }
3110
3111 static void __exit edgeport_exit (void)
3112 {
3113 usb_deregister (&io_driver);
3114 usb_serial_deregister (&edgeport_1port_device);
3115 usb_serial_deregister (&edgeport_2port_device);
3116 }
3117
3118 module_init(edgeport_init);
3119 module_exit(edgeport_exit);
3120
3121 /* Module information */
3122 MODULE_AUTHOR(DRIVER_AUTHOR);
3123 MODULE_DESCRIPTION(DRIVER_DESC);
3124 MODULE_LICENSE("GPL");
3125
3126 module_param(debug, bool, S_IRUGO | S_IWUSR);
3127 MODULE_PARM_DESC(debug, "Debug enabled or not");
3128
3129 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
3130 MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
3131
3132 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3133 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3134
3135 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3136 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
3137
3138 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
3139 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
3140
WRT350N Kernel Patches