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shmem: new export ops
[linux-2.6/linux-trees-mm.git] / drivers / usb / serial / io_ti.c
blobb8670905bc3ac858d4e30aa91c2191e4c883c88e
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/serial.h>
38 #include <linux/ioctl.h>
39 #include <asm/uaccess.h>
40 #include <asm/semaphore.h>
41 #include <linux/usb.h>
42 #include <linux/usb/serial.h>
43
44 #include "io_16654.h"
45 #include "io_usbvend.h"
46 #include "io_ti.h"
47
48 /*
49 * Version Information
50 */
51 #define DRIVER_VERSION "v0.7mode043006"
52 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
53 #define DRIVER_DESC "Edgeport USB Serial Driver"
54
55
56 /* firmware image code */
57 #define IMAGE_VERSION_NAME PagableOperationalCodeImageVersion
58 #define IMAGE_ARRAY_NAME PagableOperationalCodeImage
59 #define IMAGE_SIZE PagableOperationalCodeSize
60 #include "io_fw_down3.h" /* Define array OperationalCodeImage[] */
61
62 #define EPROM_PAGE_SIZE 64
63
64
65 struct edgeport_uart_buf_desc {
66 __u32 count; // Number of bytes currently in buffer
67 };
68
69 /* different hardware types */
70 #define HARDWARE_TYPE_930 0
71 #define HARDWARE_TYPE_TIUMP 1
72
73 // IOCTL_PRIVATE_TI_GET_MODE Definitions
74 #define TI_MODE_CONFIGURING 0 // Device has not entered start device
75 #define TI_MODE_BOOT 1 // Staying in boot mode
76 #define TI_MODE_DOWNLOAD 2 // Made it to download mode
77 #define TI_MODE_TRANSITIONING 3 // Currently in boot mode but transitioning to download mode
78
79 /* read urb state */
80 #define EDGE_READ_URB_RUNNING 0
81 #define EDGE_READ_URB_STOPPING 1
82 #define EDGE_READ_URB_STOPPED 2
83
84 #define EDGE_LOW_LATENCY 1
85 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
86
87 #define EDGE_OUT_BUF_SIZE 1024
88
89
90 /* Product information read from the Edgeport */
91 struct product_info
92 {
93 int TiMode; // Current TI Mode
94 __u8 hardware_type; // Type of hardware
95 } __attribute__((packed));
96
97 /* circular buffer */
98 struct edge_buf {
99 unsigned int buf_size;
100 char *buf_buf;
101 char *buf_get;
102 char *buf_put;
103 };
104
105 struct edgeport_port {
106 __u16 uart_base;
107 __u16 dma_address;
108 __u8 shadow_msr;
109 __u8 shadow_mcr;
110 __u8 shadow_lsr;
111 __u8 lsr_mask;
112 __u32 ump_read_timeout; /* Number of miliseconds the UMP will
113 wait without data before completing
114 a read short */
115 int baud_rate;
116 int close_pending;
117 int lsr_event;
118 struct edgeport_uart_buf_desc tx;
119 struct async_icount icount;
120 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
121 waiting for msr change to
122 happen */
123 struct edgeport_serial *edge_serial;
124 struct usb_serial_port *port;
125 __u8 bUartMode; /* Port type, 0: RS232, etc. */
126 spinlock_t ep_lock;
127 int ep_read_urb_state;
128 int ep_write_urb_in_use;
129 struct edge_buf *ep_out_buf;
130 };
131
132 struct edgeport_serial {
133 struct product_info product_info;
134 u8 TI_I2C_Type; // Type of I2C in UMP
135 u8 TiReadI2C; // Set to TRUE if we have read the I2c in Boot Mode
136 struct semaphore es_sem;
137 int num_ports_open;
138 struct usb_serial *serial;
139 };
140
141
142 /* Devices that this driver supports */
143 static struct usb_device_id edgeport_1port_id_table [] = {
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
160 { }
161 };
162
163 static struct usb_device_id edgeport_2port_id_table [] = {
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
176 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
182 { }
183 };
184
185 /* Devices that this driver supports */
186 static struct usb_device_id id_table_combined [] = {
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
209 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
210 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
211 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
212 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
213 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
214 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
215 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
216 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
217 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
218 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
219 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
220 { }
221 };
222
223 MODULE_DEVICE_TABLE (usb, id_table_combined);
224
225 static struct usb_driver io_driver = {
226 .name = "io_ti",
227 .probe = usb_serial_probe,
228 .disconnect = usb_serial_disconnect,
229 .id_table = id_table_combined,
230 .no_dynamic_id = 1,
231 };
232
233
234 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
235
236 static int debug;
237
238 static int TIStayInBootMode = 0;
239 static int low_latency = EDGE_LOW_LATENCY;
240 static int closing_wait = EDGE_CLOSING_WAIT;
241 static int ignore_cpu_rev = 0;
242 static int default_uart_mode = 0; /* RS232 */
243
244
245 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
246
247 static void stop_read(struct edgeport_port *edge_port);
248 static int restart_read(struct edgeport_port *edge_port);
249
250 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios);
251 static void edge_send(struct usb_serial_port *port);
252
253 /* sysfs attributes */
254 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
255 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
256
257 /* circular buffer */
258 static struct edge_buf *edge_buf_alloc(unsigned int size);
259 static void edge_buf_free(struct edge_buf *eb);
260 static void edge_buf_clear(struct edge_buf *eb);
261 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
262 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
263 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
264 unsigned int count);
265 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
266 unsigned int count);
267
268
269 static int TIReadVendorRequestSync (struct usb_device *dev,
270 __u8 request,
271 __u16 value,
272 __u16 index,
273 u8 *data,
274 int size)
275 {
276 int status;
277
278 status = usb_control_msg (dev,
279 usb_rcvctrlpipe(dev, 0),
280 request,
281 (USB_TYPE_VENDOR |
282 USB_RECIP_DEVICE |
283 USB_DIR_IN),
284 value,
285 index,
286 data,
287 size,
288 1000);
289 if (status < 0)
290 return status;
291 if (status != size) {
292 dbg ("%s - wanted to write %d, but only wrote %d",
293 __FUNCTION__, size, status);
294 return -ECOMM;
295 }
296 return 0;
297 }
298
299 static int TISendVendorRequestSync (struct usb_device *dev,
300 __u8 request,
301 __u16 value,
302 __u16 index,
303 u8 *data,
304 int size)
305 {
306 int status;
307
308 status = usb_control_msg (dev,
309 usb_sndctrlpipe(dev, 0),
310 request,
311 (USB_TYPE_VENDOR |
312 USB_RECIP_DEVICE |
313 USB_DIR_OUT),
314 value,
315 index,
316 data,
317 size,
318 1000);
319 if (status < 0)
320 return status;
321 if (status != size) {
322 dbg ("%s - wanted to write %d, but only wrote %d",
323 __FUNCTION__, size, status);
324 return -ECOMM;
325 }
326 return 0;
327 }
328
329 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
330 __u8 moduleid, __u16 value, u8 *data,
331 int size)
332 {
333 return TISendVendorRequestSync (dev,
334 command, // Request
335 value, // wValue
336 moduleid, // wIndex
337 data, // TransferBuffer
338 size); // TransferBufferLength
339
340 }
341
342 /* clear tx/rx buffers and fifo in TI UMP */
343 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
344 {
345 int port_number = port->number - port->serial->minor;
346
347 dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
348
349 return TIWriteCommandSync (port->serial->dev,
350 UMPC_PURGE_PORT,
351 (__u8)(UMPM_UART1_PORT + port_number),
352 mask,
353 NULL,
354 0);
355 }
356
357 /**
358 * TIReadDownloadMemory - Read edgeport memory from TI chip
359 * @dev: usb device pointer
360 * @start_address: Device CPU address at which to read
361 * @length: Length of above data
362 * @address_type: Can read both XDATA and I2C
363 * @buffer: pointer to input data buffer
364 */
365 static int TIReadDownloadMemory(struct usb_device *dev, int start_address,
366 int length, __u8 address_type, __u8 *buffer)
367 {
368 int status = 0;
369 __u8 read_length;
370 __be16 be_start_address;
371
372 dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
373
374 /* Read in blocks of 64 bytes
375 * (TI firmware can't handle more than 64 byte reads)
376 */
377 while (length) {
378 if (length > 64)
379 read_length= 64;
380 else
381 read_length = (__u8)length;
382
383 if (read_length > 1) {
384 dbg ("%s - @ %x for %d", __FUNCTION__,
385 start_address, read_length);
386 }
387 be_start_address = cpu_to_be16 (start_address);
388 status = TIReadVendorRequestSync (dev,
389 UMPC_MEMORY_READ, // Request
390 (__u16)address_type, // wValue (Address type)
391 (__force __u16)be_start_address, // wIndex (Address to read)
392 buffer, // TransferBuffer
393 read_length); // TransferBufferLength
394
395 if (status) {
396 dbg ("%s - ERROR %x", __FUNCTION__, status);
397 return status;
398 }
399
400 if (read_length > 1) {
401 usb_serial_debug_data(debug, &dev->dev, __FUNCTION__,
402 read_length, buffer);
403 }
404
405 /* Update pointers/length */
406 start_address += read_length;
407 buffer += read_length;
408 length -= read_length;
409 }
410
411 return status;
412 }
413
414 static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
415 {
416 return TIReadDownloadMemory (dev,
417 start_address,
418 length,
419 DTK_ADDR_SPACE_XDATA,
420 buffer);
421 }
422
423 /* Read edgeport memory to a given block */
424 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
425 {
426 int status = 0;
427 int i;
428
429 for (i=0; i< length; i++) {
430 status = TIReadVendorRequestSync (serial->serial->dev,
431 UMPC_MEMORY_READ, // Request
432 serial->TI_I2C_Type, // wValue (Address type)
433 (__u16)(start_address+i), // wIndex
434 &buffer[i], // TransferBuffer
435 0x01); // TransferBufferLength
436 if (status) {
437 dbg ("%s - ERROR %x", __FUNCTION__, status);
438 return status;
439 }
440 }
441
442 dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
443 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
444
445 serial->TiReadI2C = 1;
446
447 return status;
448 }
449
450 /* Write given block to TI EPROM memory */
451 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
452 {
453 int status = 0;
454 int i;
455 __u8 temp;
456
457 /* Must do a read before write */
458 if (!serial->TiReadI2C) {
459 status = TIReadBootMemory(serial, 0, 1, &temp);
460 if (status)
461 return status;
462 }
463
464 for (i=0; i < length; ++i) {
465 status = TISendVendorRequestSync (serial->serial->dev,
466 UMPC_MEMORY_WRITE, // Request
467 buffer[i], // wValue
468 (__u16)(i+start_address), // wIndex
469 NULL, // TransferBuffer
470 0); // TransferBufferLength
471 if (status)
472 return status;
473 }
474
475 dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
476 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
477
478 return status;
479 }
480
481
482 /* Write edgeport I2C memory to TI chip */
483 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
484 {
485 int status = 0;
486 int write_length;
487 __be16 be_start_address;
488
489 /* We can only send a maximum of 1 aligned byte page at a time */
490
491 /* calulate the number of bytes left in the first page */
492 write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
493
494 if (write_length > length)
495 write_length = length;
496
497 dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
498 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
499
500 /* Write first page */
501 be_start_address = cpu_to_be16 (start_address);
502 status = TISendVendorRequestSync (serial->serial->dev,
503 UMPC_MEMORY_WRITE, // Request
504 (__u16)address_type, // wValue
505 (__force __u16)be_start_address, // wIndex
506 buffer, // TransferBuffer
507 write_length);
508 if (status) {
509 dbg ("%s - ERROR %d", __FUNCTION__, status);
510 return status;
511 }
512
513 length -= write_length;
514 start_address += write_length;
515 buffer += write_length;
516
517 /* We should be aligned now -- can write max page size bytes at a time */
518 while (length) {
519 if (length > EPROM_PAGE_SIZE)
520 write_length = EPROM_PAGE_SIZE;
521 else
522 write_length = length;
523
524 dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
525 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
526
527 /* Write next page */
528 be_start_address = cpu_to_be16 (start_address);
529 status = TISendVendorRequestSync (serial->serial->dev,
530 UMPC_MEMORY_WRITE, // Request
531 (__u16)address_type, // wValue
532 (__force __u16)be_start_address, // wIndex
533 buffer, // TransferBuffer
534 write_length); // TransferBufferLength
535 if (status) {
536 dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __FUNCTION__, status);
537 return status;
538 }
539
540 length -= write_length;
541 start_address += write_length;
542 buffer += write_length;
543 }
544 return status;
545 }
546
547 /* Examine the UMP DMA registers and LSR
548 *
549 * Check the MSBit of the X and Y DMA byte count registers.
550 * A zero in this bit indicates that the TX DMA buffers are empty
551 * then check the TX Empty bit in the UART.
552 */
553 static int TIIsTxActive (struct edgeport_port *port)
554 {
555 int status;
556 struct out_endpoint_desc_block *oedb;
557 __u8 *lsr;
558 int bytes_left = 0;
559
560 oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
561 if (!oedb) {
562 dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
563 return -ENOMEM;
564 }
565
566 lsr = kmalloc (1, GFP_KERNEL); /* Sigh, that's right, just one byte,
567 as not all platforms can do DMA
568 from stack */
569 if (!lsr) {
570 kfree(oedb);
571 return -ENOMEM;
572 }
573 /* Read the DMA Count Registers */
574 status = TIReadRam (port->port->serial->dev,
575 port->dma_address,
576 sizeof( *oedb),
577 (void *)oedb);
578
579 if (status)
580 goto exit_is_tx_active;
581
582 dbg ("%s - XByteCount 0x%X", __FUNCTION__, oedb->XByteCount);
583
584 /* and the LSR */
585 status = TIReadRam (port->port->serial->dev,
586 port->uart_base + UMPMEM_OFFS_UART_LSR,
587 1,
588 lsr);
589
590 if (status)
591 goto exit_is_tx_active;
592 dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr);
593
594 /* If either buffer has data or we are transmitting then return TRUE */
595 if ((oedb->XByteCount & 0x80 ) != 0 )
596 bytes_left += 64;
597
598 if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
599 bytes_left += 1;
600
601 /* We return Not Active if we get any kind of error */
602 exit_is_tx_active:
603 dbg ("%s - return %d", __FUNCTION__, bytes_left );
604
605 kfree(lsr);
606 kfree(oedb);
607 return bytes_left;
608 }
609
610 static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush)
611 {
612 int baud_rate;
613 struct tty_struct *tty = port->port->tty;
614 wait_queue_t wait;
615 unsigned long flags;
616
617 if (!timeout)
618 timeout = (HZ*EDGE_CLOSING_WAIT)/100;
619
620 /* wait for data to drain from the buffer */
621 spin_lock_irqsave(&port->ep_lock, flags);
622 init_waitqueue_entry(&wait, current);
623 add_wait_queue(&tty->write_wait, &wait);
624 for (;;) {
625 set_current_state(TASK_INTERRUPTIBLE);
626 if (edge_buf_data_avail(port->ep_out_buf) == 0
627 || timeout == 0 || signal_pending(current)
628 || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */
629 break;
630 spin_unlock_irqrestore(&port->ep_lock, flags);
631 timeout = schedule_timeout(timeout);
632 spin_lock_irqsave(&port->ep_lock, flags);
633 }
634 set_current_state(TASK_RUNNING);
635 remove_wait_queue(&tty->write_wait, &wait);
636 if (flush)
637 edge_buf_clear(port->ep_out_buf);
638 spin_unlock_irqrestore(&port->ep_lock, flags);
639
640 /* wait for data to drain from the device */
641 timeout += jiffies;
642 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
643 && usb_get_intfdata(port->port->serial->interface)) { /* not disconnected */
644 if (!TIIsTxActive(port))
645 break;
646 msleep(10);
647 }
648
649 /* disconnected */
650 if (!usb_get_intfdata(port->port->serial->interface))
651 return;
652
653 /* wait one more character time, based on baud rate */
654 /* (TIIsTxActive doesn't seem to wait for the last byte) */
655 if ((baud_rate=port->baud_rate) == 0)
656 baud_rate = 50;
657 msleep(max(1,(10000+baud_rate-1)/baud_rate));
658 }
659
660 static int TIChooseConfiguration (struct usb_device *dev)
661 {
662 // There may be multiple configurations on this device, in which case
663 // we would need to read and parse all of them to find out which one
664 // we want. However, we just support one config at this point,
665 // configuration # 1, which is Config Descriptor 0.
666
667 dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces);
668 dbg ("%s - MAX Power = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
669
670 if (dev->config->desc.bNumInterfaces != 1) {
671 dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
672 return -ENODEV;
673 }
674
675 return 0;
676 }
677
678 static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
679 {
680 int status;
681
682 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
683 status = TIReadDownloadMemory (serial->serial->dev,
684 start_address,
685 length,
686 serial->TI_I2C_Type,
687 buffer);
688 } else {
689 status = TIReadBootMemory (serial,
690 start_address,
691 length,
692 buffer);
693 }
694
695 return status;
696 }
697
698 static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
699 {
700 if (serial->product_info.TiMode == TI_MODE_BOOT)
701 return TIWriteBootMemory (serial,
702 start_address,
703 length,
704 buffer);
705
706 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
707 return TIWriteDownloadI2C (serial,
708 start_address,
709 length,
710 serial->TI_I2C_Type,
711 buffer);
712
713 return -EINVAL;
714 }
715
716
717
718 /* Read a descriptor header from I2C based on type */
719 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
720 {
721 int start_address;
722 int status;
723
724 /* Search for requested descriptor in I2C */
725 start_address = 2;
726 do {
727 status = TIReadRom (serial,
728 start_address,
729 sizeof(struct ti_i2c_desc),
730 (__u8 *)rom_desc );
731 if (status)
732 return 0;
733
734 if (rom_desc->Type == desc_type)
735 return start_address;
736
737 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
738
739 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
740
741 return 0;
742 }
743
744 /* Validate descriptor checksum */
745 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
746 {
747 __u16 i;
748 __u8 cs = 0;
749
750 for (i=0; i < rom_desc->Size; i++) {
751 cs = (__u8)(cs + buffer[i]);
752 }
753 if (cs != rom_desc->CheckSum) {
754 dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
755 return -EINVAL;
756 }
757 return 0;
758 }
759
760 /* Make sure that the I2C image is good */
761 static int TiValidateI2cImage (struct edgeport_serial *serial)
762 {
763 struct device *dev = &serial->serial->dev->dev;
764 int status = 0;
765 struct ti_i2c_desc *rom_desc;
766 int start_address = 2;
767 __u8 *buffer;
768 __u16 ttype;
769
770 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
771 if (!rom_desc) {
772 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
773 return -ENOMEM;
774 }
775 buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
776 if (!buffer) {
777 dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__);
778 kfree (rom_desc);
779 return -ENOMEM;
780 }
781
782 // Read the first byte (Signature0) must be 0x52 or 0x10
783 status = TIReadRom (serial, 0, 1, buffer);
784 if (status)
785 goto ExitTiValidateI2cImage;
786
787 if (*buffer != UMP5152 && *buffer != UMP3410) {
788 dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
789 status = -ENODEV;
790 goto ExitTiValidateI2cImage;
791 }
792
793 do {
794 // Validate the I2C
795 status = TIReadRom (serial,
796 start_address,
797 sizeof(struct ti_i2c_desc),
798 (__u8 *)rom_desc);
799 if (status)
800 break;
801
802 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
803 status = -ENODEV;
804 dbg ("%s - structure too big, erroring out.", __FUNCTION__);
805 break;
806 }
807
808 dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
809
810 // Skip type 2 record
811 ttype = rom_desc->Type & 0x0f;
812 if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
813 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) {
814 // Read the descriptor data
815 status = TIReadRom(serial,
816 start_address+sizeof(struct ti_i2c_desc),
817 rom_desc->Size,
818 buffer);
819 if (status)
820 break;
821
822 status = ValidChecksum(rom_desc, buffer);
823 if (status)
824 break;
825 }
826 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
827
828 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
829
830 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
831 status = -ENODEV;
832
833 ExitTiValidateI2cImage:
834 kfree (buffer);
835 kfree (rom_desc);
836 return status;
837 }
838
839 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
840 {
841 int status;
842 int start_address;
843 struct ti_i2c_desc *rom_desc;
844 struct edge_ti_manuf_descriptor *desc;
845
846 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
847 if (!rom_desc) {
848 dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__);
849 return -ENOMEM;
850 }
851 start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
852
853 if (!start_address) {
854 dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
855 status = -ENODEV;
856 goto exit;
857 }
858
859 // Read the descriptor data
860 status = TIReadRom (serial,
861 start_address+sizeof(struct ti_i2c_desc),
862 rom_desc->Size,
863 buffer);
864 if (status)
865 goto exit;
866
867 status = ValidChecksum(rom_desc, buffer);
868
869 desc = (struct edge_ti_manuf_descriptor *)buffer;
870 dbg ( "%s - IonConfig 0x%x", __FUNCTION__, desc->IonConfig );
871 dbg ( "%s - Version %d", __FUNCTION__, desc->Version );
872 dbg ( "%s - Cpu/Board 0x%x", __FUNCTION__, desc->CpuRev_BoardRev );
873 dbg ( "%s - NumPorts %d", __FUNCTION__, desc->NumPorts );
874 dbg ( "%s - NumVirtualPorts %d", __FUNCTION__, desc->NumVirtualPorts );
875 dbg ( "%s - TotalPorts %d", __FUNCTION__, desc->TotalPorts );
876
877 exit:
878 kfree (rom_desc);
879 return status;
880 }
881
882 /* Build firmware header used for firmware update */
883 static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
884 {
885 __u8 *buffer;
886 int buffer_size;
887 int i;
888 __u8 cs = 0;
889 struct ti_i2c_desc *i2c_header;
890 struct ti_i2c_image_header *img_header;
891 struct ti_i2c_firmware_rec *firmware_rec;
892
893 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
894 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
895 // will download the latest firmware (padded to 15.5k) into the UMP ram.
896 // And finally when the device comes back up in download mode the driver will cause
897 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
898 // the record type from 0xf2 to 0x02.
899
900 // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
901 buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
902
903 buffer = kmalloc (buffer_size, GFP_KERNEL);
904 if (!buffer) {
905 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
906 return -ENOMEM;
907 }
908
909 // Set entire image of 0xffs
910 memset (buffer, 0xff, buffer_size);
911
912 // Copy version number into firmware record
913 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
914
915 firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
916 firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
917
918 // Pointer to fw_down memory image
919 img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
920
921 memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
922 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
923 le16_to_cpu(img_header->Length));
924
925 for (i=0; i < buffer_size; i++) {
926 cs = (__u8)(cs + buffer[i]);
927 }
928
929 kfree (buffer);
930
931 // Build new header
932 i2c_header = (struct ti_i2c_desc *)header;
933 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
934
935 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
936 i2c_header->Size = (__u16)buffer_size;
937 i2c_header->CheckSum = cs;
938 firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
939 firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
940
941 return 0;
942 }
943
944 /* Try to figure out what type of I2c we have */
945 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
946 {
947 int status;
948 __u8 data;
949
950 // Try to read type 2
951 status = TIReadVendorRequestSync (serial->serial->dev,
952 UMPC_MEMORY_READ, // Request
953 DTK_ADDR_SPACE_I2C_TYPE_II, // wValue (Address type)
954 0, // wIndex
955 &data, // TransferBuffer
956 0x01); // TransferBufferLength
957 if (status)
958 dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
959 else
960 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
961 if ((!status) && (data == UMP5152 || data == UMP3410)) {
962 dbg ("%s - ROM_TYPE_II", __FUNCTION__);
963 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
964 return 0;
965 }
966
967 // Try to read type 3
968 status = TIReadVendorRequestSync (serial->serial->dev,
969 UMPC_MEMORY_READ, // Request
970 DTK_ADDR_SPACE_I2C_TYPE_III, // wValue (Address type)
971 0, // wIndex
972 &data, // TransferBuffer
973 0x01); // TransferBufferLength
974 if (status)
975 dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
976 else
977 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
978 if ((!status) && (data == UMP5152 || data == UMP3410)) {
979 dbg ("%s - ROM_TYPE_III", __FUNCTION__);
980 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
981 return 0;
982 }
983
984 dbg ("%s - Unknown", __FUNCTION__);
985 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
986 return -ENODEV;
987 }
988
989 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
990 {
991 int status;
992
993 status = usb_bulk_msg (serial->dev,
994 usb_sndbulkpipe(serial->dev,
995 serial->port[0]->bulk_out_endpointAddress),
996 buffer,
997 length,
998 num_sent,
999 1000);
1000 return status;
1001 }
1002
1003 /* Download given firmware image to the device (IN BOOT MODE) */
1004 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
1005 {
1006 int status = 0;
1007 int pos;
1008 int transfer;
1009 int done;
1010
1011 // Transfer firmware image
1012 for (pos = 0; pos < image_length; ) {
1013 // Read the next buffer from file
1014 transfer = image_length - pos;
1015 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
1016 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
1017
1018 // Transfer data
1019 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
1020 if (status)
1021 break;
1022 // Advance buffer pointer
1023 pos += done;
1024 }
1025
1026 return status;
1027 }
1028
1029 // FIXME!!!
1030 static int TIConfigureBootDevice (struct usb_device *dev)
1031 {
1032 return 0;
1033 }
1034
1035 /**
1036 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1037 *
1038 * This routine downloads the main operating code into the TI5052, using the
1039 * boot code already burned into E2PROM or ROM.
1040 */
1041 static int TIDownloadFirmware (struct edgeport_serial *serial)
1042 {
1043 struct device *dev = &serial->serial->dev->dev;
1044 int status = 0;
1045 int start_address;
1046 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1047 struct usb_interface_descriptor *interface;
1048 int download_cur_ver;
1049 int download_new_ver;
1050
1051 /* This routine is entered by both the BOOT mode and the Download mode
1052 * We can determine which code is running by the reading the config
1053 * descriptor and if we have only one bulk pipe it is in boot mode
1054 */
1055 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1056
1057 /* Default to type 2 i2c */
1058 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1059
1060 status = TIChooseConfiguration (serial->serial->dev);
1061 if (status)
1062 return status;
1063
1064 interface = &serial->serial->interface->cur_altsetting->desc;
1065 if (!interface) {
1066 dev_err (dev, "%s - no interface set, error!\n", __FUNCTION__);
1067 return -ENODEV;
1068 }
1069
1070 // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1071 // if we have more than one endpoint we are definitely in download mode
1072 if (interface->bNumEndpoints > 1)
1073 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1074 else
1075 // Otherwise we will remain in configuring mode
1076 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1077
1078 // Save Download Version Number
1079 OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1080 OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1081 OperationalCodeImageVersion.BuildNumber = PagableOperationalCodeImageVersion.BuildNumber;
1082
1083 /********************************************************************/
1084 /* Download Mode */
1085 /********************************************************************/
1086 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1087 struct ti_i2c_desc *rom_desc;
1088
1089 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
1090
1091 status = TiValidateI2cImage (serial);
1092 if (status) {
1093 dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
1094 __FUNCTION__);
1095 return status;
1096 }
1097
1098 /* Validate Hardware version number
1099 * Read Manufacturing Descriptor from TI Based Edgeport
1100 */
1101 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1102 if (!ti_manuf_desc) {
1103 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1104 return -ENOMEM;
1105 }
1106 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1107 if (status) {
1108 kfree (ti_manuf_desc);
1109 return status;
1110 }
1111
1112 // Check version number of ION descriptor
1113 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1114 dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1115 TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1116 kfree (ti_manuf_desc);
1117 return -EINVAL;
1118 }
1119
1120 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1121 if (!rom_desc) {
1122 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1123 kfree (ti_manuf_desc);
1124 return -ENOMEM;
1125 }
1126
1127 // Search for type 2 record (firmware record)
1128 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1129 struct ti_i2c_firmware_rec *firmware_version;
1130 __u8 record;
1131
1132 dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
1133
1134 firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1135 if (!firmware_version) {
1136 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1137 kfree (rom_desc);
1138 kfree (ti_manuf_desc);
1139 return -ENOMEM;
1140 }
1141
1142 // Validate version number
1143 // Read the descriptor data
1144 status = TIReadRom (serial,
1145 start_address+sizeof(struct ti_i2c_desc),
1146 sizeof(struct ti_i2c_firmware_rec),
1147 (__u8 *)firmware_version);
1148 if (status) {
1149 kfree (firmware_version);
1150 kfree (rom_desc);
1151 kfree (ti_manuf_desc);
1152 return status;
1153 }
1154
1155 // Check version number of download with current version in I2c
1156 download_cur_ver = (firmware_version->Ver_Major << 8) +
1157 (firmware_version->Ver_Minor);
1158 download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1159 (OperationalCodeImageVersion.MinorVersion);
1160
1161 dbg ("%s - >>>Firmware Versions Device %d.%d Driver %d.%d",
1162 __FUNCTION__,
1163 firmware_version->Ver_Major,
1164 firmware_version->Ver_Minor,
1165 OperationalCodeImageVersion.MajorVersion,
1166 OperationalCodeImageVersion.MinorVersion);
1167
1168 // Check if we have an old version in the I2C and update if necessary
1169 if (download_cur_ver != download_new_ver) {
1170 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1171 __FUNCTION__,
1172 firmware_version->Ver_Major,
1173 firmware_version->Ver_Minor,
1174 OperationalCodeImageVersion.MajorVersion,
1175 OperationalCodeImageVersion.MinorVersion);
1176
1177 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1178 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
1179 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1180 // And finally when the device comes back up in download mode the driver will cause
1181 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1182 // the record type from 0xf2 to 0x02.
1183
1184 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1185
1186 // Change the I2C Firmware record type to 0xf2 to trigger an update
1187 status = TIWriteRom (serial,
1188 start_address,
1189 sizeof(record),
1190 &record);
1191 if (status) {
1192 kfree (firmware_version);
1193 kfree (rom_desc);
1194 kfree (ti_manuf_desc);
1195 return status;
1196 }
1197
1198 // verify the write -- must do this in order for write to
1199 // complete before we do the hardware reset
1200 status = TIReadRom (serial,
1201 start_address,
1202 sizeof(record),
1203 &record);
1204
1205 if (status) {
1206 kfree (firmware_version);
1207 kfree (rom_desc);
1208 kfree (ti_manuf_desc);
1209 return status;
1210 }
1211
1212 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1213 dev_err (dev, "%s - error resetting device\n", __FUNCTION__);
1214 kfree (firmware_version);
1215 kfree (rom_desc);
1216 kfree (ti_manuf_desc);
1217 return -ENODEV;
1218 }
1219
1220 dbg ("%s - HARDWARE RESET", __FUNCTION__);
1221
1222 // Reset UMP -- Back to BOOT MODE
1223 status = TISendVendorRequestSync (serial->serial->dev,
1224 UMPC_HARDWARE_RESET, // Request
1225 0, // wValue
1226 0, // wIndex
1227 NULL, // TransferBuffer
1228 0); // TransferBufferLength
1229
1230 dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
1231
1232 /* return an error on purpose. */
1233 kfree (firmware_version);
1234 kfree (rom_desc);
1235 kfree (ti_manuf_desc);
1236 return -ENODEV;
1237 }
1238 kfree (firmware_version);
1239 }
1240 // Search for type 0xF2 record (firmware blank record)
1241 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1242 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1243 __u8 *header;
1244 __u8 *vheader;
1245
1246 header = kmalloc (HEADER_SIZE, GFP_KERNEL);
1247 if (!header) {
1248 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1249 kfree (rom_desc);
1250 kfree (ti_manuf_desc);
1251 return -ENOMEM;
1252 }
1253
1254 vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1255 if (!vheader) {
1256 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1257 kfree (header);
1258 kfree (rom_desc);
1259 kfree (ti_manuf_desc);
1260 return -ENOMEM;
1261 }
1262
1263 dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
1264
1265 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1266 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
1267 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1268 // And finally when the device comes back up in download mode the driver will cause
1269 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1270 // the record type from 0xf2 to 0x02.
1271 status = BuildI2CFirmwareHeader(header, dev);
1272 if (status) {
1273 kfree (vheader);
1274 kfree (header);
1275 kfree (rom_desc);
1276 kfree (ti_manuf_desc);
1277 return status;
1278 }
1279
1280 // Update I2C with type 0xf2 record with correct size and checksum
1281 status = TIWriteRom (serial,
1282 start_address,
1283 HEADER_SIZE,
1284 header);
1285 if (status) {
1286 kfree (vheader);
1287 kfree (header);
1288 kfree (rom_desc);
1289 kfree (ti_manuf_desc);
1290 return status;
1291 }
1292
1293 // verify the write -- must do this in order for write to
1294 // complete before we do the hardware reset
1295 status = TIReadRom (serial,
1296 start_address,
1297 HEADER_SIZE,
1298 vheader);
1299
1300 if (status) {
1301 dbg ("%s - can't read header back", __FUNCTION__);
1302 kfree (vheader);
1303 kfree (header);
1304 kfree (rom_desc);
1305 kfree (ti_manuf_desc);
1306 return status;
1307 }
1308 if (memcmp(vheader, header, HEADER_SIZE)) {
1309 dbg ("%s - write download record failed", __FUNCTION__);
1310 kfree (vheader);
1311 kfree (header);
1312 kfree (rom_desc);
1313 kfree (ti_manuf_desc);
1314 return status;
1315 }
1316
1317 kfree (vheader);
1318 kfree (header);
1319
1320 dbg ("%s - Start firmware update", __FUNCTION__);
1321
1322 // Tell firmware to copy download image into I2C
1323 status = TISendVendorRequestSync (serial->serial->dev,
1324 UMPC_COPY_DNLD_TO_I2C, // Request
1325 0, // wValue
1326 0, // wIndex
1327 NULL, // TransferBuffer
1328 0); // TransferBufferLength
1329
1330 dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
1331 if (status) {
1332 dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __FUNCTION__);
1333 kfree (rom_desc);
1334 kfree (ti_manuf_desc);
1335 return status;
1336 }
1337 }
1338
1339 // The device is running the download code
1340 kfree (rom_desc);
1341 kfree (ti_manuf_desc);
1342 return 0;
1343 }
1344
1345 /********************************************************************/
1346 /* Boot Mode */
1347 /********************************************************************/
1348 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
1349 __FUNCTION__);
1350
1351 // Configure the TI device so we can use the BULK pipes for download
1352 status = TIConfigureBootDevice (serial->serial->dev);
1353 if (status)
1354 return status;
1355
1356 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) {
1357 dbg ("%s - VID = 0x%x", __FUNCTION__,
1358 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1359 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1360 goto StayInBootMode;
1361 }
1362
1363 // We have an ION device (I2c Must be programmed)
1364 // Determine I2C image type
1365 if (TIGetI2cTypeInBootMode(serial)) {
1366 goto StayInBootMode;
1367 }
1368
1369 // Registry variable set?
1370 if (TIStayInBootMode) {
1371 dbg ("%s - TIStayInBootMode", __FUNCTION__);
1372 goto StayInBootMode;
1373 }
1374
1375 // Check for ION Vendor ID and that the I2C is valid
1376 if (!TiValidateI2cImage(serial)) {
1377 struct ti_i2c_image_header *header;
1378 int i;
1379 __u8 cs = 0;
1380 __u8 *buffer;
1381 int buffer_size;
1382
1383 /* Validate Hardware version number
1384 * Read Manufacturing Descriptor from TI Based Edgeport
1385 */
1386 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1387 if (!ti_manuf_desc) {
1388 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1389 return -ENOMEM;
1390 }
1391 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1392 if (status) {
1393 kfree (ti_manuf_desc);
1394 goto StayInBootMode;
1395 }
1396
1397 // Check for version 2
1398 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1399 dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1400 TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1401 kfree (ti_manuf_desc);
1402 goto StayInBootMode;
1403 }
1404
1405 kfree (ti_manuf_desc);
1406
1407 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1408 // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver
1409 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1410 // And finally when the device comes back up in download mode the driver will cause
1411 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1412 // the record type from 0xf2 to 0x02.
1413
1414 /*
1415 * Do we really have to copy the whole firmware image,
1416 * or could we do this in place!
1417 */
1418
1419 // Allocate a 15.5k buffer + 3 byte header
1420 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1421 buffer = kmalloc (buffer_size, GFP_KERNEL);
1422 if (!buffer) {
1423 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
1424 return -ENOMEM;
1425 }
1426
1427 // Initialize the buffer to 0xff (pad the buffer)
1428 memset (buffer, 0xff, buffer_size);
1429
1430 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1431
1432 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1433 cs = (__u8)(cs + buffer[i]);
1434 }
1435
1436 header = (struct ti_i2c_image_header *)buffer;
1437
1438 // update length and checksum after padding
1439 header->Length = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header)));
1440 header->CheckSum = cs;
1441
1442 // Download the operational code
1443 dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
1444 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1445
1446 kfree (buffer);
1447
1448 if (status) {
1449 dbg ("%s - Error downloading operational code image", __FUNCTION__);
1450 return status;
1451 }
1452
1453 // Device will reboot
1454 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1455
1456 dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
1457
1458 /* return an error on purpose */
1459 return -ENODEV;
1460 }
1461
1462 StayInBootMode:
1463 // Eprom is invalid or blank stay in boot mode
1464 dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
1465 serial->product_info.TiMode = TI_MODE_BOOT;
1466
1467 return 0;
1468 }
1469
1470
1471 static int TISetDtr (struct edgeport_port *port)
1472 {
1473 int port_number = port->port->number - port->port->serial->minor;
1474
1475 dbg ("%s", __FUNCTION__);
1476 port->shadow_mcr |= MCR_DTR;
1477
1478 return TIWriteCommandSync (port->port->serial->dev,
1479 UMPC_SET_CLR_DTR,
1480 (__u8)(UMPM_UART1_PORT + port_number),
1481 1, /* set */
1482 NULL,
1483 0);
1484 }
1485
1486 static int TIClearDtr (struct edgeport_port *port)
1487 {
1488 int port_number = port->port->number - port->port->serial->minor;
1489
1490 dbg ("%s", __FUNCTION__);
1491 port->shadow_mcr &= ~MCR_DTR;
1492
1493 return TIWriteCommandSync (port->port->serial->dev,
1494 UMPC_SET_CLR_DTR,
1495 (__u8)(UMPM_UART1_PORT + port_number),
1496 0, /* clear */
1497 NULL,
1498 0);
1499 }
1500
1501 static int TISetRts (struct edgeport_port *port)
1502 {
1503 int port_number = port->port->number - port->port->serial->minor;
1504
1505 dbg ("%s", __FUNCTION__);
1506 port->shadow_mcr |= MCR_RTS;
1507
1508 return TIWriteCommandSync (port->port->serial->dev,
1509 UMPC_SET_CLR_RTS,
1510 (__u8)(UMPM_UART1_PORT + port_number),
1511 1, /* set */
1512 NULL,
1513 0);
1514 }
1515
1516 static int TIClearRts (struct edgeport_port *port)
1517 {
1518 int port_number = port->port->number - port->port->serial->minor;
1519
1520 dbg ("%s", __FUNCTION__);
1521 port->shadow_mcr &= ~MCR_RTS;
1522
1523 return TIWriteCommandSync (port->port->serial->dev,
1524 UMPC_SET_CLR_RTS,
1525 (__u8)(UMPM_UART1_PORT + port_number),
1526 0, /* clear */
1527 NULL,
1528 0);
1529 }
1530
1531 static int TISetLoopBack (struct edgeport_port *port)
1532 {
1533 int port_number = port->port->number - port->port->serial->minor;
1534
1535 dbg ("%s", __FUNCTION__);
1536
1537 return TIWriteCommandSync (port->port->serial->dev,
1538 UMPC_SET_CLR_LOOPBACK,
1539 (__u8)(UMPM_UART1_PORT + port_number),
1540 1, /* set */
1541 NULL,
1542 0);
1543 }
1544
1545 static int TIClearLoopBack (struct edgeport_port *port)
1546 {
1547 int port_number = port->port->number - port->port->serial->minor;
1548
1549 dbg ("%s", __FUNCTION__);
1550
1551 return TIWriteCommandSync (port->port->serial->dev,
1552 UMPC_SET_CLR_LOOPBACK,
1553 (__u8)(UMPM_UART1_PORT + port_number),
1554 0, /* clear */
1555 NULL,
1556 0);
1557 }
1558
1559 static int TISetBreak (struct edgeport_port *port)
1560 {
1561 int port_number = port->port->number - port->port->serial->minor;
1562
1563 dbg ("%s", __FUNCTION__);
1564
1565 return TIWriteCommandSync (port->port->serial->dev,
1566 UMPC_SET_CLR_BREAK,
1567 (__u8)(UMPM_UART1_PORT + port_number),
1568 1, /* set */
1569 NULL,
1570 0);
1571 }
1572
1573 static int TIClearBreak (struct edgeport_port *port)
1574 {
1575 int port_number = port->port->number - port->port->serial->minor;
1576
1577 dbg ("%s", __FUNCTION__);
1578
1579 return TIWriteCommandSync (port->port->serial->dev,
1580 UMPC_SET_CLR_BREAK,
1581 (__u8)(UMPM_UART1_PORT + port_number),
1582 0, /* clear */
1583 NULL,
1584 0);
1585 }
1586
1587 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1588 {
1589 int status = 0;
1590
1591 dbg ("%s - %x", __FUNCTION__, mcr);
1592
1593 if (mcr & MCR_DTR)
1594 status = TISetDtr (port);
1595 else
1596 status = TIClearDtr (port);
1597
1598 if (status)
1599 return status;
1600
1601 if (mcr & MCR_RTS)
1602 status = TISetRts (port);
1603 else
1604 status = TIClearRts (port);
1605
1606 if (status)
1607 return status;
1608
1609 if (mcr & MCR_LOOPBACK)
1610 status = TISetLoopBack (port);
1611 else
1612 status = TIClearLoopBack (port);
1613
1614 return status;
1615 }
1616
1617
1618
1619 /* Convert TI LSR to standard UART flags */
1620 static __u8 MapLineStatus (__u8 ti_lsr)
1621 {
1622 __u8 lsr = 0;
1623
1624 #define MAP_FLAG(flagUmp, flagUart) \
1625 if (ti_lsr & flagUmp) \
1626 lsr |= flagUart;
1627
1628 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1629 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1630 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1631 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1632 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* receive data available */
1633 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* transmit holding register empty */
1634
1635 #undef MAP_FLAG
1636
1637 return lsr;
1638 }
1639
1640 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1641 {
1642 struct async_icount *icount;
1643 struct tty_struct *tty;
1644
1645 dbg ("%s - %02x", __FUNCTION__, msr);
1646
1647 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1648 icount = &edge_port->icount;
1649
1650 /* update input line counters */
1651 if (msr & EDGEPORT_MSR_DELTA_CTS)
1652 icount->cts++;
1653 if (msr & EDGEPORT_MSR_DELTA_DSR)
1654 icount->dsr++;
1655 if (msr & EDGEPORT_MSR_DELTA_CD)
1656 icount->dcd++;
1657 if (msr & EDGEPORT_MSR_DELTA_RI)
1658 icount->rng++;
1659 wake_up_interruptible (&edge_port->delta_msr_wait);
1660 }
1661
1662 /* Save the new modem status */
1663 edge_port->shadow_msr = msr & 0xf0;
1664
1665 tty = edge_port->port->tty;
1666 /* handle CTS flow control */
1667 if (tty && C_CRTSCTS(tty)) {
1668 if (msr & EDGEPORT_MSR_CTS) {
1669 tty->hw_stopped = 0;
1670 tty_wakeup(tty);
1671 } else {
1672 tty->hw_stopped = 1;
1673 }
1674 }
1675
1676 return;
1677 }
1678
1679 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1680 {
1681 struct async_icount *icount;
1682 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1683
1684 dbg ("%s - %02x", __FUNCTION__, new_lsr);
1685
1686 edge_port->shadow_lsr = lsr;
1687
1688 if (new_lsr & LSR_BREAK) {
1689 /*
1690 * Parity and Framing errors only count if they
1691 * occur exclusive of a break being received.
1692 */
1693 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1694 }
1695
1696 /* Place LSR data byte into Rx buffer */
1697 if (lsr_data && edge_port->port->tty)
1698 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
1699
1700 /* update input line counters */
1701 icount = &edge_port->icount;
1702 if (new_lsr & LSR_BREAK)
1703 icount->brk++;
1704 if (new_lsr & LSR_OVER_ERR)
1705 icount->overrun++;
1706 if (new_lsr & LSR_PAR_ERR)
1707 icount->parity++;
1708 if (new_lsr & LSR_FRM_ERR)
1709 icount->frame++;
1710 }
1711
1712
1713 static void edge_interrupt_callback (struct urb *urb)
1714 {
1715 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
1716 struct usb_serial_port *port;
1717 struct edgeport_port *edge_port;
1718 unsigned char *data = urb->transfer_buffer;
1719 int length = urb->actual_length;
1720 int port_number;
1721 int function;
1722 int retval;
1723 __u8 lsr;
1724 __u8 msr;
1725 int status = urb->status;
1726
1727 dbg("%s", __FUNCTION__);
1728
1729 switch (status) {
1730 case 0:
1731 /* success */
1732 break;
1733 case -ECONNRESET:
1734 case -ENOENT:
1735 case -ESHUTDOWN:
1736 /* this urb is terminated, clean up */
1737 dbg("%s - urb shutting down with status: %d",
1738 __FUNCTION__, status);
1739 return;
1740 default:
1741 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1742 "%d\n", __FUNCTION__, status);
1743 goto exit;
1744 }
1745
1746 if (!length) {
1747 dbg ("%s - no data in urb", __FUNCTION__);
1748 goto exit;
1749 }
1750
1751 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
1752
1753 if (length != 2) {
1754 dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
1755 goto exit;
1756 }
1757
1758 port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1759 function = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1760 dbg ("%s - port_number %d, function %d, info 0x%x",
1761 __FUNCTION__, port_number, function, data[1]);
1762 port = edge_serial->serial->port[port_number];
1763 edge_port = usb_get_serial_port_data(port);
1764 if (!edge_port) {
1765 dbg ("%s - edge_port not found", __FUNCTION__);
1766 return;
1767 }
1768 switch (function) {
1769 case TIUMP_INTERRUPT_CODE_LSR:
1770 lsr = MapLineStatus(data[1]);
1771 if (lsr & UMP_UART_LSR_DATA_MASK) {
1772 /* Save the LSR event for bulk read completion routine */
1773 dbg ("%s - LSR Event Port %u LSR Status = %02x",
1774 __FUNCTION__, port_number, lsr);
1775 edge_port->lsr_event = 1;
1776 edge_port->lsr_mask = lsr;
1777 } else {
1778 dbg ("%s - ===== Port %d LSR Status = %02x ======",
1779 __FUNCTION__, port_number, lsr);
1780 handle_new_lsr (edge_port, 0, lsr, 0);
1781 }
1782 break;
1783
1784 case TIUMP_INTERRUPT_CODE_MSR: // MSR
1785 /* Copy MSR from UMP */
1786 msr = data[1];
1787 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1788 __FUNCTION__, port_number, msr);
1789 handle_new_msr (edge_port, msr);
1790 break;
1791
1792 default:
1793 dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
1794 __FUNCTION__, data[1]);
1795 break;
1796
1797 }
1798
1799 exit:
1800 retval = usb_submit_urb (urb, GFP_ATOMIC);
1801 if (retval)
1802 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1803 __FUNCTION__, retval);
1804 }
1805
1806 static void edge_bulk_in_callback (struct urb *urb)
1807 {
1808 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1809 unsigned char *data = urb->transfer_buffer;
1810 struct tty_struct *tty;
1811 int retval = 0;
1812 int port_number;
1813 int status = urb->status;
1814
1815 dbg("%s", __FUNCTION__);
1816
1817 switch (status) {
1818 case 0:
1819 /* success */
1820 break;
1821 case -ECONNRESET:
1822 case -ENOENT:
1823 case -ESHUTDOWN:
1824 /* this urb is terminated, clean up */
1825 dbg("%s - urb shutting down with status: %d",
1826 __FUNCTION__, status);
1827 return;
1828 default:
1829 dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
1830 __FUNCTION__, status);
1831 }
1832
1833 if (status == -EPIPE)
1834 goto exit;
1835
1836 if (status) {
1837 dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__);
1838 return;
1839 }
1840
1841 port_number = edge_port->port->number - edge_port->port->serial->minor;
1842
1843 if (edge_port->lsr_event) {
1844 edge_port->lsr_event = 0;
1845 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1846 __FUNCTION__, port_number, edge_port->lsr_mask, *data);
1847 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1848 /* Adjust buffer length/pointer */
1849 --urb->actual_length;
1850 ++data;
1851 }
1852
1853 tty = edge_port->port->tty;
1854 if (tty && urb->actual_length) {
1855 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, urb->actual_length, data);
1856
1857 if (edge_port->close_pending) {
1858 dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
1859 } else {
1860 edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length);
1861 }
1862 edge_port->icount.rx += urb->actual_length;
1863 }
1864
1865 exit:
1866 /* continue read unless stopped */
1867 spin_lock(&edge_port->ep_lock);
1868 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1869 urb->dev = edge_port->port->serial->dev;
1870 retval = usb_submit_urb(urb, GFP_ATOMIC);
1871 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1872 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1873 }
1874 spin_unlock(&edge_port->ep_lock);
1875 if (retval)
1876 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1877 __FUNCTION__, retval);
1878 }
1879
1880 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
1881 {
1882 int cnt;
1883
1884 do {
1885 cnt = tty_buffer_request_room(tty, length);
1886 if (cnt < length) {
1887 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1888 __FUNCTION__, length - cnt);
1889 if(cnt == 0)
1890 break;
1891 }
1892 tty_insert_flip_string(tty, data, cnt);
1893 data += cnt;
1894 length -= cnt;
1895 } while (length > 0);
1896
1897 tty_flip_buffer_push(tty);
1898 }
1899
1900 static void edge_bulk_out_callback (struct urb *urb)
1901 {
1902 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1903 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1904 int status = urb->status;
1905
1906 dbg ("%s - port %d", __FUNCTION__, port->number);
1907
1908 edge_port->ep_write_urb_in_use = 0;
1909
1910 switch (status) {
1911 case 0:
1912 /* success */
1913 break;
1914 case -ECONNRESET:
1915 case -ENOENT:
1916 case -ESHUTDOWN:
1917 /* this urb is terminated, clean up */
1918 dbg("%s - urb shutting down with status: %d",
1919 __FUNCTION__, status);
1920 return;
1921 default:
1922 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1923 "received: %d\n", __FUNCTION__, status);
1924 }
1925
1926 /* send any buffered data */
1927 edge_send(port);
1928 }
1929
1930 static int edge_open (struct usb_serial_port *port, struct file * filp)
1931 {
1932 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1933 struct edgeport_serial *edge_serial;
1934 struct usb_device *dev;
1935 struct urb *urb;
1936 int port_number;
1937 int status;
1938 u16 open_settings;
1939 u8 transaction_timeout;
1940
1941 dbg("%s - port %d", __FUNCTION__, port->number);
1942
1943 if (edge_port == NULL)
1944 return -ENODEV;
1945
1946 if (port->tty)
1947 port->tty->low_latency = low_latency;
1948
1949 port_number = port->number - port->serial->minor;
1950 switch (port_number) {
1951 case 0:
1952 edge_port->uart_base = UMPMEM_BASE_UART1;
1953 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1954 break;
1955 case 1:
1956 edge_port->uart_base = UMPMEM_BASE_UART2;
1957 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1958 break;
1959 default:
1960 dev_err (&port->dev, "Unknown port number!!!\n");
1961 return -ENODEV;
1962 }
1963
1964 dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1965 __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
1966
1967 dev = port->serial->dev;
1968
1969 memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1970 init_waitqueue_head (&edge_port->delta_msr_wait);
1971
1972 /* turn off loopback */
1973 status = TIClearLoopBack (edge_port);
1974 if (status) {
1975 dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n",
1976 __FUNCTION__, status);
1977 return status;
1978 }
1979
1980 /* set up the port settings */
1981 edge_set_termios (port, NULL);
1982
1983 /* open up the port */
1984
1985 /* milliseconds to timeout for DMA transfer */
1986 transaction_timeout = 2;
1987
1988 edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1989
1990 // milliseconds to timeout for DMA transfer
1991 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1992 UMP_PIPE_TRANS_TIMEOUT_ENA |
1993 (transaction_timeout << 2));
1994
1995 dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
1996
1997 /* Tell TI to open and start the port */
1998 status = TIWriteCommandSync (dev,
1999 UMPC_OPEN_PORT,
2000 (u8)(UMPM_UART1_PORT + port_number),
2001 open_settings,
2002 NULL,
2003 0);
2004 if (status) {
2005 dev_err(&port->dev,"%s - cannot send open command, %d\n", __FUNCTION__, status);
2006 return status;
2007 }
2008
2009 /* Start the DMA? */
2010 status = TIWriteCommandSync (dev,
2011 UMPC_START_PORT,
2012 (u8)(UMPM_UART1_PORT + port_number),
2013 0,
2014 NULL,
2015 0);
2016 if (status) {
2017 dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __FUNCTION__, status);
2018 return status;
2019 }
2020
2021 /* Clear TX and RX buffers in UMP */
2022 status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
2023 if (status) {
2024 dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __FUNCTION__, status);
2025 return status;
2026 }
2027
2028 /* Read Initial MSR */
2029 status = TIReadVendorRequestSync (dev,
2030 UMPC_READ_MSR, // Request
2031 0, // wValue
2032 (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
2033 &edge_port->shadow_msr, // TransferBuffer
2034 1); // TransferBufferLength
2035 if (status) {
2036 dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __FUNCTION__, status);
2037 return status;
2038 }
2039
2040 dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
2041
2042 /* Set Initial MCR */
2043 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
2044 dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr);
2045
2046 edge_serial = edge_port->edge_serial;
2047 if (down_interruptible(&edge_serial->es_sem))
2048 return -ERESTARTSYS;
2049 if (edge_serial->num_ports_open == 0) {
2050 /* we are the first port to be opened, let's post the interrupt urb */
2051 urb = edge_serial->serial->port[0]->interrupt_in_urb;
2052 if (!urb) {
2053 dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
2054 status = -EINVAL;
2055 goto up_es_sem;
2056 }
2057 urb->complete = edge_interrupt_callback;
2058 urb->context = edge_serial;
2059 urb->dev = dev;
2060 status = usb_submit_urb (urb, GFP_KERNEL);
2061 if (status) {
2062 dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2063 goto up_es_sem;
2064 }
2065 }
2066
2067 /*
2068 * reset the data toggle on the bulk endpoints to work around bug in
2069 * host controllers where things get out of sync some times
2070 */
2071 usb_clear_halt (dev, port->write_urb->pipe);
2072 usb_clear_halt (dev, port->read_urb->pipe);
2073
2074 /* start up our bulk read urb */
2075 urb = port->read_urb;
2076 if (!urb) {
2077 dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
2078 status = -EINVAL;
2079 goto unlink_int_urb;
2080 }
2081 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2082 urb->complete = edge_bulk_in_callback;
2083 urb->context = edge_port;
2084 urb->dev = dev;
2085 status = usb_submit_urb (urb, GFP_KERNEL);
2086 if (status) {
2087 dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2088 goto unlink_int_urb;
2089 }
2090
2091 ++edge_serial->num_ports_open;
2092
2093 dbg("%s - exited", __FUNCTION__);
2094
2095 goto up_es_sem;
2096
2097 unlink_int_urb:
2098 if (edge_port->edge_serial->num_ports_open == 0)
2099 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2100 up_es_sem:
2101 up(&edge_serial->es_sem);
2102 return status;
2103 }
2104
2105 static void edge_close (struct usb_serial_port *port, struct file *filp)
2106 {
2107 struct edgeport_serial *edge_serial;
2108 struct edgeport_port *edge_port;
2109 int port_number;
2110 int status;
2111
2112 dbg("%s - port %d", __FUNCTION__, port->number);
2113
2114 edge_serial = usb_get_serial_data(port->serial);
2115 edge_port = usb_get_serial_port_data(port);
2116 if ((edge_serial == NULL) || (edge_port == NULL))
2117 return;
2118
2119 /* The bulkreadcompletion routine will check
2120 * this flag and dump add read data */
2121 edge_port->close_pending = 1;
2122
2123 /* chase the port close and flush */
2124 TIChasePort (edge_port, (HZ*closing_wait)/100, 1);
2125
2126 usb_kill_urb(port->read_urb);
2127 usb_kill_urb(port->write_urb);
2128 edge_port->ep_write_urb_in_use = 0;
2129
2130 /* assuming we can still talk to the device,
2131 * send a close port command to it */
2132 dbg("%s - send umpc_close_port", __FUNCTION__);
2133 port_number = port->number - port->serial->minor;
2134 status = TIWriteCommandSync (port->serial->dev,
2135 UMPC_CLOSE_PORT,
2136 (__u8)(UMPM_UART1_PORT + port_number),
2137 0,
2138 NULL,
2139 0);
2140 down(&edge_serial->es_sem);
2141 --edge_port->edge_serial->num_ports_open;
2142 if (edge_port->edge_serial->num_ports_open <= 0) {
2143 /* last port is now closed, let's shut down our interrupt urb */
2144 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2145 edge_port->edge_serial->num_ports_open = 0;
2146 }
2147 up(&edge_serial->es_sem);
2148 edge_port->close_pending = 0;
2149
2150 dbg("%s - exited", __FUNCTION__);
2151 }
2152
2153 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
2154 {
2155 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2156 unsigned long flags;
2157
2158 dbg("%s - port %d", __FUNCTION__, port->number);
2159
2160 if (count == 0) {
2161 dbg("%s - write request of 0 bytes", __FUNCTION__);
2162 return 0;
2163 }
2164
2165 if (edge_port == NULL)
2166 return -ENODEV;
2167 if (edge_port->close_pending == 1)
2168 return -ENODEV;
2169
2170 spin_lock_irqsave(&edge_port->ep_lock, flags);
2171 count = edge_buf_put(edge_port->ep_out_buf, data, count);
2172 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2173
2174 edge_send(port);
2175
2176 return count;
2177 }
2178
2179 static void edge_send(struct usb_serial_port *port)
2180 {
2181 int count, result;
2182 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2183 struct tty_struct *tty = port->tty;
2184 unsigned long flags;
2185
2186
2187 dbg("%s - port %d", __FUNCTION__, port->number);
2188
2189 spin_lock_irqsave(&edge_port->ep_lock, flags);
2190
2191 if (edge_port->ep_write_urb_in_use) {
2192 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2193 return;
2194 }
2195
2196 count = edge_buf_get(edge_port->ep_out_buf,
2197 port->write_urb->transfer_buffer,
2198 port->bulk_out_size);
2199
2200 if (count == 0) {
2201 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2202 return;
2203 }
2204
2205 edge_port->ep_write_urb_in_use = 1;
2206
2207 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2208
2209 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
2210
2211 /* set up our urb */
2212 usb_fill_bulk_urb (port->write_urb, port->serial->dev,
2213 usb_sndbulkpipe (port->serial->dev,
2214 port->bulk_out_endpointAddress),
2215 port->write_urb->transfer_buffer, count,
2216 edge_bulk_out_callback,
2217 port);
2218
2219 /* send the data out the bulk port */
2220 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2221 if (result) {
2222 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
2223 edge_port->ep_write_urb_in_use = 0;
2224 // TODO: reschedule edge_send
2225 } else {
2226 edge_port->icount.tx += count;
2227 }
2228
2229 /* wakeup any process waiting for writes to complete */
2230 /* there is now more room in the buffer for new writes */
2231 if (tty) {
2232 /* let the tty driver wakeup if it has a special write_wakeup function */
2233 tty_wakeup(tty);
2234 }
2235 }
2236
2237 static int edge_write_room (struct usb_serial_port *port)
2238 {
2239 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2240 int room = 0;
2241 unsigned long flags;
2242
2243 dbg("%s - port %d", __FUNCTION__, port->number);
2244
2245 if (edge_port == NULL)
2246 return -ENODEV;
2247 if (edge_port->close_pending == 1)
2248 return -ENODEV;
2249
2250 spin_lock_irqsave(&edge_port->ep_lock, flags);
2251 room = edge_buf_space_avail(edge_port->ep_out_buf);
2252 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2253
2254 dbg("%s - returns %d", __FUNCTION__, room);
2255 return room;
2256 }
2257
2258 static int edge_chars_in_buffer (struct usb_serial_port *port)
2259 {
2260 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2261 int chars = 0;
2262 unsigned long flags;
2263
2264 dbg("%s - port %d", __FUNCTION__, port->number);
2265
2266 if (edge_port == NULL)
2267 return -ENODEV;
2268 if (edge_port->close_pending == 1)
2269 return -ENODEV;
2270
2271 spin_lock_irqsave(&edge_port->ep_lock, flags);
2272 chars = edge_buf_data_avail(edge_port->ep_out_buf);
2273 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2274
2275 dbg ("%s - returns %d", __FUNCTION__, chars);
2276 return chars;
2277 }
2278
2279 static void edge_throttle (struct usb_serial_port *port)
2280 {
2281 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2282 struct tty_struct *tty;
2283 int status;
2284
2285 dbg("%s - port %d", __FUNCTION__, port->number);
2286
2287 if (edge_port == NULL)
2288 return;
2289
2290 tty = port->tty;
2291 if (!tty) {
2292 dbg ("%s - no tty available", __FUNCTION__);
2293 return;
2294 }
2295
2296 /* if we are implementing XON/XOFF, send the stop character */
2297 if (I_IXOFF(tty)) {
2298 unsigned char stop_char = STOP_CHAR(tty);
2299 status = edge_write (port, &stop_char, 1);
2300 if (status <= 0) {
2301 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __FUNCTION__, status);
2302 }
2303 }
2304
2305 /* if we are implementing RTS/CTS, stop reads */
2306 /* and the Edgeport will clear the RTS line */
2307 if (C_CRTSCTS(tty))
2308 stop_read(edge_port);
2309
2310 }
2311
2312 static void edge_unthrottle (struct usb_serial_port *port)
2313 {
2314 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2315 struct tty_struct *tty;
2316 int status;
2317
2318 dbg("%s - port %d", __FUNCTION__, port->number);
2319
2320 if (edge_port == NULL)
2321 return;
2322
2323 tty = port->tty;
2324 if (!tty) {
2325 dbg ("%s - no tty available", __FUNCTION__);
2326 return;
2327 }
2328
2329 /* if we are implementing XON/XOFF, send the start character */
2330 if (I_IXOFF(tty)) {
2331 unsigned char start_char = START_CHAR(tty);
2332 status = edge_write (port, &start_char, 1);
2333 if (status <= 0) {
2334 dev_err(&port->dev, "%s - failed to write start character, %d\n", __FUNCTION__, status);
2335 }
2336 }
2337
2338 /* if we are implementing RTS/CTS, restart reads */
2339 /* are the Edgeport will assert the RTS line */
2340 if (C_CRTSCTS(tty)) {
2341 status = restart_read(edge_port);
2342 if (status)
2343 dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2344 }
2345
2346 }
2347
2348 static void stop_read(struct edgeport_port *edge_port)
2349 {
2350 unsigned long flags;
2351
2352 spin_lock_irqsave(&edge_port->ep_lock, flags);
2353
2354 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2355 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2356 edge_port->shadow_mcr &= ~MCR_RTS;
2357
2358 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2359 }
2360
2361 static int restart_read(struct edgeport_port *edge_port)
2362 {
2363 struct urb *urb;
2364 int status = 0;
2365 unsigned long flags;
2366
2367 spin_lock_irqsave(&edge_port->ep_lock, flags);
2368
2369 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2370 urb = edge_port->port->read_urb;
2371 urb->complete = edge_bulk_in_callback;
2372 urb->context = edge_port;
2373 urb->dev = edge_port->port->serial->dev;
2374 status = usb_submit_urb(urb, GFP_ATOMIC);
2375 }
2376 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2377 edge_port->shadow_mcr |= MCR_RTS;
2378
2379 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2380
2381 return status;
2382 }
2383
2384 static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios)
2385 {
2386 struct ump_uart_config *config;
2387 struct tty_struct *tty;
2388 int baud;
2389 unsigned cflag;
2390 int status;
2391 int port_number = edge_port->port->number - edge_port->port->serial->minor;
2392
2393 dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2394
2395 tty = edge_port->port->tty;
2396 if ((!tty) ||
2397 (!tty->termios)) {
2398 dbg("%s - no tty structures", __FUNCTION__);
2399 return;
2400 }
2401
2402 config = kmalloc (sizeof (*config), GFP_KERNEL);
2403 if (!config) {
2404 dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__);
2405 return;
2406 }
2407
2408 cflag = tty->termios->c_cflag;
2409
2410 config->wFlags = 0;
2411
2412 /* These flags must be set */
2413 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2414 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2415 config->bUartMode = (__u8)(edge_port->bUartMode);
2416
2417 switch (cflag & CSIZE) {
2418 case CS5:
2419 config->bDataBits = UMP_UART_CHAR5BITS;
2420 dbg ("%s - data bits = 5", __FUNCTION__);
2421 break;
2422 case CS6:
2423 config->bDataBits = UMP_UART_CHAR6BITS;
2424 dbg ("%s - data bits = 6", __FUNCTION__);
2425 break;
2426 case CS7:
2427 config->bDataBits = UMP_UART_CHAR7BITS;
2428 dbg ("%s - data bits = 7", __FUNCTION__);
2429 break;
2430 default:
2431 case CS8:
2432 config->bDataBits = UMP_UART_CHAR8BITS;
2433 dbg ("%s - data bits = 8", __FUNCTION__);
2434 break;
2435 }
2436
2437 if (cflag & PARENB) {
2438 if (cflag & PARODD) {
2439 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2440 config->bParity = UMP_UART_ODDPARITY;
2441 dbg("%s - parity = odd", __FUNCTION__);
2442 } else {
2443 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2444 config->bParity = UMP_UART_EVENPARITY;
2445 dbg("%s - parity = even", __FUNCTION__);
2446 }
2447 } else {
2448 config->bParity = UMP_UART_NOPARITY;
2449 dbg("%s - parity = none", __FUNCTION__);
2450 }
2451
2452 if (cflag & CSTOPB) {
2453 config->bStopBits = UMP_UART_STOPBIT2;
2454 dbg("%s - stop bits = 2", __FUNCTION__);
2455 } else {
2456 config->bStopBits = UMP_UART_STOPBIT1;
2457 dbg("%s - stop bits = 1", __FUNCTION__);
2458 }
2459
2460 /* figure out the flow control settings */
2461 if (cflag & CRTSCTS) {
2462 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2463 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2464 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2465 } else {
2466 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2467 tty->hw_stopped = 0;
2468 restart_read(edge_port);
2469 }
2470
2471 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2472 if (I_IXOFF(tty) || I_IXON(tty)) {
2473 config->cXon = START_CHAR(tty);
2474 config->cXoff = STOP_CHAR(tty);
2475
2476 /* if we are implementing INBOUND XON/XOFF */
2477 if (I_IXOFF(tty)) {
2478 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2479 dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2480 __FUNCTION__, config->cXon, config->cXoff);
2481 } else {
2482 dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2483 }
2484
2485 /* if we are implementing OUTBOUND XON/XOFF */
2486 if (I_IXON(tty)) {
2487 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2488 dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2489 __FUNCTION__, config->cXon, config->cXoff);
2490 } else {
2491 dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2492 }
2493 }
2494
2495 /* Round the baud rate */
2496 baud = tty_get_baud_rate(tty);
2497 if (!baud) {
2498 /* pick a default, any default... */
2499 baud = 9600;
2500 }
2501 edge_port->baud_rate = baud;
2502 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2503
2504 dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
2505
2506 dbg ("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2507 dbg ("wFlags: 0x%x", config->wFlags);
2508 dbg ("bDataBits: %d", config->bDataBits);
2509 dbg ("bParity: %d", config->bParity);
2510 dbg ("bStopBits: %d", config->bStopBits);
2511 dbg ("cXon: %d", config->cXon);
2512 dbg ("cXoff: %d", config->cXoff);
2513 dbg ("bUartMode: %d", config->bUartMode);
2514
2515 /* move the word values into big endian mode */
2516 cpu_to_be16s (&config->wFlags);
2517 cpu_to_be16s (&config->wBaudRate);
2518
2519 status = TIWriteCommandSync (edge_port->port->serial->dev,
2520 UMPC_SET_CONFIG,
2521 (__u8)(UMPM_UART1_PORT + port_number),
2522 0,
2523 (__u8 *)config,
2524 sizeof(*config));
2525 if (status) {
2526 dbg ("%s - error %d when trying to write config to device",
2527 __FUNCTION__, status);
2528 }
2529
2530 kfree (config);
2531
2532 return;
2533 }
2534
2535 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
2536 {
2537 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2538 struct tty_struct *tty = port->tty;
2539 unsigned int cflag;
2540
2541 if (!port->tty || !port->tty->termios) {
2542 dbg ("%s - no tty or termios", __FUNCTION__);
2543 return;
2544 }
2545
2546 cflag = tty->termios->c_cflag;
2547
2548 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2549 tty->termios->c_cflag, tty->termios->c_iflag);
2550 if (old_termios) {
2551 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2552 old_termios->c_cflag, old_termios->c_iflag);
2553 }
2554
2555 dbg("%s - port %d", __FUNCTION__, port->number);
2556
2557 if (edge_port == NULL)
2558 return;
2559
2560 /* change the port settings to the new ones specified */
2561 change_port_settings (edge_port, old_termios);
2562
2563 return;
2564 }
2565
2566 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
2567 {
2568 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2569 unsigned int mcr;
2570
2571 dbg("%s - port %d", __FUNCTION__, port->number);
2572
2573 mcr = edge_port->shadow_mcr;
2574 if (set & TIOCM_RTS)
2575 mcr |= MCR_RTS;
2576 if (set & TIOCM_DTR)
2577 mcr |= MCR_DTR;
2578 if (set & TIOCM_LOOP)
2579 mcr |= MCR_LOOPBACK;
2580
2581 if (clear & TIOCM_RTS)
2582 mcr &= ~MCR_RTS;
2583 if (clear & TIOCM_DTR)
2584 mcr &= ~MCR_DTR;
2585 if (clear & TIOCM_LOOP)
2586 mcr &= ~MCR_LOOPBACK;
2587
2588 edge_port->shadow_mcr = mcr;
2589
2590 TIRestoreMCR (edge_port, mcr);
2591
2592 return 0;
2593 }
2594
2595 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
2596 {
2597 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2598 unsigned int result = 0;
2599 unsigned int msr;
2600 unsigned int mcr;
2601
2602 dbg("%s - port %d", __FUNCTION__, port->number);
2603
2604 msr = edge_port->shadow_msr;
2605 mcr = edge_port->shadow_mcr;
2606 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2607 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2608 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2609 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2610 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2611 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2612
2613
2614 dbg("%s -- %x", __FUNCTION__, result);
2615
2616 return result;
2617 }
2618
2619 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
2620 {
2621 struct serial_struct tmp;
2622
2623 if (!retinfo)
2624 return -EFAULT;
2625
2626 memset(&tmp, 0, sizeof(tmp));
2627
2628 tmp.type = PORT_16550A;
2629 tmp.line = edge_port->port->serial->minor;
2630 tmp.port = edge_port->port->number;
2631 tmp.irq = 0;
2632 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2633 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2634 tmp.baud_base = 9600;
2635 tmp.close_delay = 5*HZ;
2636 tmp.closing_wait = closing_wait;
2637 // tmp.custom_divisor = state->custom_divisor;
2638 // tmp.hub6 = state->hub6;
2639 // tmp.io_type = state->io_type;
2640
2641
2642 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2643 return -EFAULT;
2644 return 0;
2645 }
2646
2647 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2648 {
2649 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2650 struct async_icount cnow;
2651 struct async_icount cprev;
2652
2653 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2654
2655 switch (cmd) {
2656 case TIOCINQ:
2657 dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
2658 // return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2659 break;
2660
2661 case TIOCSERGETLSR:
2662 dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2663 // return get_lsr_info(edge_port, (unsigned int *) arg);
2664 break;
2665
2666 case TIOCGSERIAL:
2667 dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2668 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
2669 break;
2670
2671 case TIOCSSERIAL:
2672 dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2673 break;
2674
2675 case TIOCMIWAIT:
2676 dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2677 cprev = edge_port->icount;
2678 while (1) {
2679 interruptible_sleep_on(&edge_port->delta_msr_wait);
2680 /* see if a signal did it */
2681 if (signal_pending(current))
2682 return -ERESTARTSYS;
2683 cnow = edge_port->icount;
2684 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2685 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2686 return -EIO; /* no change => error */
2687 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2688 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2689 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2690 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2691 return 0;
2692 }
2693 cprev = cnow;
2694 }
2695 /* not reached */
2696 break;
2697
2698 case TIOCGICOUNT:
2699 dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2700 port->number, edge_port->icount.rx, edge_port->icount.tx);
2701 if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2702 return -EFAULT;
2703 return 0;
2704 }
2705
2706 return -ENOIOCTLCMD;
2707 }
2708
2709 static void edge_break (struct usb_serial_port *port, int break_state)
2710 {
2711 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2712 int status;
2713
2714 dbg ("%s - state = %d", __FUNCTION__, break_state);
2715
2716 /* chase the port close */
2717 TIChasePort (edge_port, 0, 0);
2718
2719 if (break_state == -1) {
2720 status = TISetBreak (edge_port);
2721 } else {
2722 status = TIClearBreak (edge_port);
2723 }
2724 if (status) {
2725 dbg ("%s - error %d sending break set/clear command.",
2726 __FUNCTION__, status);
2727 }
2728 }
2729
2730 static int edge_startup (struct usb_serial *serial)
2731 {
2732 struct edgeport_serial *edge_serial;
2733 struct edgeport_port *edge_port;
2734 struct usb_device *dev;
2735 int status;
2736 int i;
2737
2738 dev = serial->dev;
2739
2740 /* create our private serial structure */
2741 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2742 if (edge_serial == NULL) {
2743 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2744 return -ENOMEM;
2745 }
2746 sema_init(&edge_serial->es_sem, 1);
2747 edge_serial->serial = serial;
2748 usb_set_serial_data(serial, edge_serial);
2749
2750 status = TIDownloadFirmware (edge_serial);
2751 if (status) {
2752 kfree (edge_serial);
2753 return status;
2754 }
2755
2756 /* set up our port private structures */
2757 for (i = 0; i < serial->num_ports; ++i) {
2758 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2759 if (edge_port == NULL) {
2760 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2761 goto cleanup;
2762 }
2763 spin_lock_init(&edge_port->ep_lock);
2764 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2765 if (edge_port->ep_out_buf == NULL) {
2766 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2767 kfree(edge_port);
2768 goto cleanup;
2769 }
2770 edge_port->port = serial->port[i];
2771 edge_port->edge_serial = edge_serial;
2772 usb_set_serial_port_data(serial->port[i], edge_port);
2773 edge_port->bUartMode = default_uart_mode;
2774 }
2775
2776 return 0;
2777
2778 cleanup:
2779 for (--i; i>=0; --i) {
2780 edge_port = usb_get_serial_port_data(serial->port[i]);
2781 edge_buf_free(edge_port->ep_out_buf);
2782 kfree(edge_port);
2783 usb_set_serial_port_data(serial->port[i], NULL);
2784 }
2785 kfree (edge_serial);
2786 usb_set_serial_data(serial, NULL);
2787 return -ENOMEM;
2788 }
2789
2790 static void edge_shutdown (struct usb_serial *serial)
2791 {
2792 int i;
2793 struct edgeport_port *edge_port;
2794
2795 dbg ("%s", __FUNCTION__);
2796
2797 for (i = 0; i < serial->num_ports; ++i) {
2798 edge_port = usb_get_serial_port_data(serial->port[i]);
2799 edge_remove_sysfs_attrs(edge_port->port);
2800 edge_buf_free(edge_port->ep_out_buf);
2801 kfree(edge_port);
2802 usb_set_serial_port_data(serial->port[i], NULL);
2803 }
2804 kfree(usb_get_serial_data(serial));
2805 usb_set_serial_data(serial, NULL);
2806 }
2807
2808
2809 /* Sysfs Attributes */
2810
2811 static ssize_t show_uart_mode(struct device *dev,
2812 struct device_attribute *attr, char *buf)
2813 {
2814 struct usb_serial_port *port = to_usb_serial_port(dev);
2815 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2816
2817 return sprintf(buf, "%d\n", edge_port->bUartMode);
2818 }
2819
2820 static ssize_t store_uart_mode(struct device *dev,
2821 struct device_attribute *attr, const char *valbuf, size_t count)
2822 {
2823 struct usb_serial_port *port = to_usb_serial_port(dev);
2824 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2825 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2826
2827 dbg("%s: setting uart_mode = %d", __FUNCTION__, v);
2828
2829 if (v < 256)
2830 edge_port->bUartMode = v;
2831 else
2832 dev_err(dev, "%s - uart_mode %d is invalid\n", __FUNCTION__, v);
2833
2834 return count;
2835 }
2836
2837 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, store_uart_mode);
2838
2839 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2840 {
2841 return device_create_file(&port->dev, &dev_attr_uart_mode);
2842 }
2843
2844 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2845 {
2846 device_remove_file(&port->dev, &dev_attr_uart_mode);
2847 return 0;
2848 }
2849
2850
2851 /* Circular Buffer */
2852
2853 /*
2854 * edge_buf_alloc
2855 *
2856 * Allocate a circular buffer and all associated memory.
2857 */
2858
2859 static struct edge_buf *edge_buf_alloc(unsigned int size)
2860 {
2861 struct edge_buf *eb;
2862
2863
2864 if (size == 0)
2865 return NULL;
2866
2867 eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2868 if (eb == NULL)
2869 return NULL;
2870
2871 eb->buf_buf = kmalloc(size, GFP_KERNEL);
2872 if (eb->buf_buf == NULL) {
2873 kfree(eb);
2874 return NULL;
2875 }
2876
2877 eb->buf_size = size;
2878 eb->buf_get = eb->buf_put = eb->buf_buf;
2879
2880 return eb;
2881 }
2882
2883
2884 /*
2885 * edge_buf_free
2886 *
2887 * Free the buffer and all associated memory.
2888 */
2889
2890 static void edge_buf_free(struct edge_buf *eb)
2891 {
2892 if (eb) {
2893 kfree(eb->buf_buf);
2894 kfree(eb);
2895 }
2896 }
2897
2898
2899 /*
2900 * edge_buf_clear
2901 *
2902 * Clear out all data in the circular buffer.
2903 */
2904
2905 static void edge_buf_clear(struct edge_buf *eb)
2906 {
2907 if (eb != NULL)
2908 eb->buf_get = eb->buf_put;
2909 /* equivalent to a get of all data available */
2910 }
2911
2912
2913 /*
2914 * edge_buf_data_avail
2915 *
2916 * Return the number of bytes of data available in the circular
2917 * buffer.
2918 */
2919
2920 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2921 {
2922 if (eb != NULL)
2923 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2924 else
2925 return 0;
2926 }
2927
2928
2929 /*
2930 * edge_buf_space_avail
2931 *
2932 * Return the number of bytes of space available in the circular
2933 * buffer.
2934 */
2935
2936 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2937 {
2938 if (eb != NULL)
2939 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2940 else
2941 return 0;
2942 }
2943
2944
2945 /*
2946 * edge_buf_put
2947 *
2948 * Copy data data from a user buffer and put it into the circular buffer.
2949 * Restrict to the amount of space available.
2950 *
2951 * Return the number of bytes copied.
2952 */
2953
2954 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2955 unsigned int count)
2956 {
2957 unsigned int len;
2958
2959
2960 if (eb == NULL)
2961 return 0;
2962
2963 len = edge_buf_space_avail(eb);
2964 if (count > len)
2965 count = len;
2966
2967 if (count == 0)
2968 return 0;
2969
2970 len = eb->buf_buf + eb->buf_size - eb->buf_put;
2971 if (count > len) {
2972 memcpy(eb->buf_put, buf, len);
2973 memcpy(eb->buf_buf, buf+len, count - len);
2974 eb->buf_put = eb->buf_buf + count - len;
2975 } else {
2976 memcpy(eb->buf_put, buf, count);
2977 if (count < len)
2978 eb->buf_put += count;
2979 else /* count == len */
2980 eb->buf_put = eb->buf_buf;
2981 }
2982
2983 return count;
2984 }
2985
2986
2987 /*
2988 * edge_buf_get
2989 *
2990 * Get data from the circular buffer and copy to the given buffer.
2991 * Restrict to the amount of data available.
2992 *
2993 * Return the number of bytes copied.
2994 */
2995
2996 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2997 unsigned int count)
2998 {
2999 unsigned int len;
3000
3001
3002 if (eb == NULL)
3003 return 0;
3004
3005 len = edge_buf_data_avail(eb);
3006 if (count > len)
3007 count = len;
3008
3009 if (count == 0)
3010 return 0;
3011
3012 len = eb->buf_buf + eb->buf_size - eb->buf_get;
3013 if (count > len) {
3014 memcpy(buf, eb->buf_get, len);
3015 memcpy(buf+len, eb->buf_buf, count - len);
3016 eb->buf_get = eb->buf_buf + count - len;
3017 } else {
3018 memcpy(buf, eb->buf_get, count);
3019 if (count < len)
3020 eb->buf_get += count;
3021 else /* count == len */
3022 eb->buf_get = eb->buf_buf;
3023 }
3024
3025 return count;
3026 }
3027
3028
3029 static struct usb_serial_driver edgeport_1port_device = {
3030 .driver = {
3031 .owner = THIS_MODULE,
3032 .name = "edgeport_ti_1",
3033 },
3034 .description = "Edgeport TI 1 port adapter",
3035 .usb_driver = &io_driver,
3036 .id_table = edgeport_1port_id_table,
3037 .num_interrupt_in = 1,
3038 .num_bulk_in = 1,
3039 .num_bulk_out = 1,
3040 .num_ports = 1,
3041 .open = edge_open,
3042 .close = edge_close,
3043 .throttle = edge_throttle,
3044 .unthrottle = edge_unthrottle,
3045 .attach = edge_startup,
3046 .shutdown = edge_shutdown,
3047 .port_probe = edge_create_sysfs_attrs,
3048 .ioctl = edge_ioctl,
3049 .set_termios = edge_set_termios,
3050 .tiocmget = edge_tiocmget,
3051 .tiocmset = edge_tiocmset,
3052 .write = edge_write,
3053 .write_room = edge_write_room,
3054 .chars_in_buffer = edge_chars_in_buffer,
3055 .break_ctl = edge_break,
3056 .read_int_callback = edge_interrupt_callback,
3057 .read_bulk_callback = edge_bulk_in_callback,
3058 .write_bulk_callback = edge_bulk_out_callback,
3059 };
3060
3061 static struct usb_serial_driver edgeport_2port_device = {
3062 .driver = {
3063 .owner = THIS_MODULE,
3064 .name = "edgeport_ti_2",
3065 },
3066 .description = "Edgeport TI 2 port adapter",
3067 .usb_driver = &io_driver,
3068 .id_table = edgeport_2port_id_table,
3069 .num_interrupt_in = 1,
3070 .num_bulk_in = 2,
3071 .num_bulk_out = 2,
3072 .num_ports = 2,
3073 .open = edge_open,
3074 .close = edge_close,
3075 .throttle = edge_throttle,
3076 .unthrottle = edge_unthrottle,
3077 .attach = edge_startup,
3078 .shutdown = edge_shutdown,
3079 .port_probe = edge_create_sysfs_attrs,
3080 .ioctl = edge_ioctl,
3081 .set_termios = edge_set_termios,
3082 .tiocmget = edge_tiocmget,
3083 .tiocmset = edge_tiocmset,
3084 .write = edge_write,
3085 .write_room = edge_write_room,
3086 .chars_in_buffer = edge_chars_in_buffer,
3087 .break_ctl = edge_break,
3088 .read_int_callback = edge_interrupt_callback,
3089 .read_bulk_callback = edge_bulk_in_callback,
3090 .write_bulk_callback = edge_bulk_out_callback,
3091 };
3092
3093
3094 static int __init edgeport_init(void)
3095 {
3096 int retval;
3097 retval = usb_serial_register(&edgeport_1port_device);
3098 if (retval)
3099 goto failed_1port_device_register;
3100 retval = usb_serial_register(&edgeport_2port_device);
3101 if (retval)
3102 goto failed_2port_device_register;
3103 retval = usb_register(&io_driver);
3104 if (retval)
3105 goto failed_usb_register;
3106 info(DRIVER_DESC " " DRIVER_VERSION);
3107 return 0;
3108 failed_usb_register:
3109 usb_serial_deregister(&edgeport_2port_device);
3110 failed_2port_device_register:
3111 usb_serial_deregister(&edgeport_1port_device);
3112 failed_1port_device_register:
3113 return retval;
3114 }
3115
3116 static void __exit edgeport_exit (void)
3117 {
3118 usb_deregister (&io_driver);
3119 usb_serial_deregister (&edgeport_1port_device);
3120 usb_serial_deregister (&edgeport_2port_device);
3121 }
3122
3123 module_init(edgeport_init);
3124 module_exit(edgeport_exit);
3125
3126 /* Module information */
3127 MODULE_AUTHOR(DRIVER_AUTHOR);
3128 MODULE_DESCRIPTION(DRIVER_DESC);
3129 MODULE_LICENSE("GPL");
3130
3131 module_param(debug, bool, S_IRUGO | S_IWUSR);
3132 MODULE_PARM_DESC(debug, "Debug enabled or not");
3133
3134 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
3135 MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
3136
3137 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3138 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3139
3140 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3141 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
3142
3143 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
3144 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
3145
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