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Staging: strip: delete the driver
[linux/fpc-iii.git] / drivers / usb / serial / io_ti.c
blobaa876f71f228e4f8bf053e66fc331aca593f7b54
1 /*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14 *
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
18 *
19 * Version history:
20 *
21 * July 11, 2002 Removed 4 port device structure since all TI UMP
22 * chips have only 2 ports
23 * David Iacovelli (davidi@ionetworks.com)
24 *
25 */
26
27 #include <linux/kernel.h>
28 #include <linux/jiffies.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/tty.h>
33 #include <linux/tty_driver.h>
34 #include <linux/tty_flip.h>
35 #include <linux/module.h>
36 #include <linux/spinlock.h>
37 #include <linux/mutex.h>
38 #include <linux/serial.h>
39 #include <linux/ioctl.h>
40 #include <linux/firmware.h>
41 #include <linux/uaccess.h>
42 #include <linux/usb.h>
43 #include <linux/usb/serial.h>
44
45 #include "io_16654.h"
46 #include "io_usbvend.h"
47 #include "io_ti.h"
48
49 /*
50 * Version Information
51 */
52 #define DRIVER_VERSION "v0.7mode043006"
53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
54 #define DRIVER_DESC "Edgeport USB Serial Driver"
55
56 #define EPROM_PAGE_SIZE 64
57
58
59 struct edgeport_uart_buf_desc {
60 __u32 count; /* Number of bytes currently in buffer */
61 };
62
63 /* different hardware types */
64 #define HARDWARE_TYPE_930 0
65 #define HARDWARE_TYPE_TIUMP 1
66
67 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
68 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
69 #define TI_MODE_BOOT 1 /* Staying in boot mode */
70 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
71 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
72 transitioning to download mode */
73
74 /* read urb state */
75 #define EDGE_READ_URB_RUNNING 0
76 #define EDGE_READ_URB_STOPPING 1
77 #define EDGE_READ_URB_STOPPED 2
78
79 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
80
81 #define EDGE_OUT_BUF_SIZE 1024
82
83
84 /* Product information read from the Edgeport */
85 struct product_info {
86 int TiMode; /* Current TI Mode */
87 __u8 hardware_type; /* Type of hardware */
88 } __attribute__((packed));
89
90 /* circular buffer */
91 struct edge_buf {
92 unsigned int buf_size;
93 char *buf_buf;
94 char *buf_get;
95 char *buf_put;
96 };
97
98 struct edgeport_port {
99 __u16 uart_base;
100 __u16 dma_address;
101 __u8 shadow_msr;
102 __u8 shadow_mcr;
103 __u8 shadow_lsr;
104 __u8 lsr_mask;
105 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
106 wait without data before completing
107 a read short */
108 int baud_rate;
109 int close_pending;
110 int lsr_event;
111 struct edgeport_uart_buf_desc tx;
112 struct async_icount icount;
113 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
114 waiting for msr change to
115 happen */
116 struct edgeport_serial *edge_serial;
117 struct usb_serial_port *port;
118 __u8 bUartMode; /* Port type, 0: RS232, etc. */
119 spinlock_t ep_lock;
120 int ep_read_urb_state;
121 int ep_write_urb_in_use;
122 struct edge_buf *ep_out_buf;
123 };
124
125 struct edgeport_serial {
126 struct product_info product_info;
127 u8 TI_I2C_Type; /* Type of I2C in UMP */
128 u8 TiReadI2C; /* Set to TRUE if we have read the
129 I2c in Boot Mode */
130 struct mutex es_lock;
131 int num_ports_open;
132 struct usb_serial *serial;
133 };
134
135
136 /* Devices that this driver supports */
137 static const struct usb_device_id edgeport_1port_id_table[] = {
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
154 { }
155 };
156
157 static const struct usb_device_id edgeport_2port_id_table[] = {
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
170 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
176 { }
177 };
178
179 /* Devices that this driver supports */
180 static const struct usb_device_id id_table_combined[] = {
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
209 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
210 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
211 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
212 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
213 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
214 { }
215 };
216
217 MODULE_DEVICE_TABLE(usb, id_table_combined);
218
219 static struct usb_driver io_driver = {
220 .name = "io_ti",
221 .probe = usb_serial_probe,
222 .disconnect = usb_serial_disconnect,
223 .id_table = id_table_combined,
224 .no_dynamic_id = 1,
225 };
226
227
228 static unsigned char OperationalMajorVersion;
229 static unsigned char OperationalMinorVersion;
230 static unsigned short OperationalBuildNumber;
231
232 static int debug;
233
234 static int closing_wait = EDGE_CLOSING_WAIT;
235 static int ignore_cpu_rev;
236 static int default_uart_mode; /* RS232 */
237
238 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
239 unsigned char *data, int length);
240
241 static void stop_read(struct edgeport_port *edge_port);
242 static int restart_read(struct edgeport_port *edge_port);
243
244 static void edge_set_termios(struct tty_struct *tty,
245 struct usb_serial_port *port, struct ktermios *old_termios);
246 static void edge_send(struct tty_struct *tty);
247
248 /* sysfs attributes */
249 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
250 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
251
252 /* circular buffer */
253 static struct edge_buf *edge_buf_alloc(unsigned int size);
254 static void edge_buf_free(struct edge_buf *eb);
255 static void edge_buf_clear(struct edge_buf *eb);
256 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
257 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
258 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
259 unsigned int count);
260 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
261 unsigned int count);
262
263
264 static int ti_vread_sync(struct usb_device *dev, __u8 request,
265 __u16 value, __u16 index, u8 *data, int size)
266 {
267 int status;
268
269 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
270 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
271 value, index, data, size, 1000);
272 if (status < 0)
273 return status;
274 if (status != size) {
275 dbg("%s - wanted to write %d, but only wrote %d",
276 __func__, size, status);
277 return -ECOMM;
278 }
279 return 0;
280 }
281
282 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
283 __u16 value, __u16 index, u8 *data, int size)
284 {
285 int status;
286
287 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
288 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
289 value, index, data, size, 1000);
290 if (status < 0)
291 return status;
292 if (status != size) {
293 dbg("%s - wanted to write %d, but only wrote %d",
294 __func__, size, status);
295 return -ECOMM;
296 }
297 return 0;
298 }
299
300 static int send_cmd(struct usb_device *dev, __u8 command,
301 __u8 moduleid, __u16 value, u8 *data,
302 int size)
303 {
304 return ti_vsend_sync(dev, command, value, moduleid, data, size);
305 }
306
307 /* clear tx/rx buffers and fifo in TI UMP */
308 static int purge_port(struct usb_serial_port *port, __u16 mask)
309 {
310 int port_number = port->number - port->serial->minor;
311
312 dbg("%s - port %d, mask %x", __func__, port_number, mask);
313
314 return send_cmd(port->serial->dev,
315 UMPC_PURGE_PORT,
316 (__u8)(UMPM_UART1_PORT + port_number),
317 mask,
318 NULL,
319 0);
320 }
321
322 /**
323 * read_download_mem - Read edgeport memory from TI chip
324 * @dev: usb device pointer
325 * @start_address: Device CPU address at which to read
326 * @length: Length of above data
327 * @address_type: Can read both XDATA and I2C
328 * @buffer: pointer to input data buffer
329 */
330 static int read_download_mem(struct usb_device *dev, int start_address,
331 int length, __u8 address_type, __u8 *buffer)
332 {
333 int status = 0;
334 __u8 read_length;
335 __be16 be_start_address;
336
337 dbg("%s - @ %x for %d", __func__, start_address, length);
338
339 /* Read in blocks of 64 bytes
340 * (TI firmware can't handle more than 64 byte reads)
341 */
342 while (length) {
343 if (length > 64)
344 read_length = 64;
345 else
346 read_length = (__u8)length;
347
348 if (read_length > 1) {
349 dbg("%s - @ %x for %d", __func__,
350 start_address, read_length);
351 }
352 be_start_address = cpu_to_be16(start_address);
353 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
354 (__u16)address_type,
355 (__force __u16)be_start_address,
356 buffer, read_length);
357
358 if (status) {
359 dbg("%s - ERROR %x", __func__, status);
360 return status;
361 }
362
363 if (read_length > 1)
364 usb_serial_debug_data(debug, &dev->dev, __func__,
365 read_length, buffer);
366
367 /* Update pointers/length */
368 start_address += read_length;
369 buffer += read_length;
370 length -= read_length;
371 }
372
373 return status;
374 }
375
376 static int read_ram(struct usb_device *dev, int start_address,
377 int length, __u8 *buffer)
378 {
379 return read_download_mem(dev, start_address, length,
380 DTK_ADDR_SPACE_XDATA, buffer);
381 }
382
383 /* Read edgeport memory to a given block */
384 static int read_boot_mem(struct edgeport_serial *serial,
385 int start_address, int length, __u8 *buffer)
386 {
387 int status = 0;
388 int i;
389
390 for (i = 0; i < length; i++) {
391 status = ti_vread_sync(serial->serial->dev,
392 UMPC_MEMORY_READ, serial->TI_I2C_Type,
393 (__u16)(start_address+i), &buffer[i], 0x01);
394 if (status) {
395 dbg("%s - ERROR %x", __func__, status);
396 return status;
397 }
398 }
399
400 dbg("%s - start_address = %x, length = %d",
401 __func__, start_address, length);
402 usb_serial_debug_data(debug, &serial->serial->dev->dev,
403 __func__, length, buffer);
404
405 serial->TiReadI2C = 1;
406
407 return status;
408 }
409
410 /* Write given block to TI EPROM memory */
411 static int write_boot_mem(struct edgeport_serial *serial,
412 int start_address, int length, __u8 *buffer)
413 {
414 int status = 0;
415 int i;
416 u8 *temp;
417
418 /* Must do a read before write */
419 if (!serial->TiReadI2C) {
420 temp = kmalloc(1, GFP_KERNEL);
421 if (!temp) {
422 dev_err(&serial->serial->dev->dev,
423 "%s - out of memory\n", __func__);
424 return -ENOMEM;
425 }
426 status = read_boot_mem(serial, 0, 1, temp);
427 kfree(temp);
428 if (status)
429 return status;
430 }
431
432 for (i = 0; i < length; ++i) {
433 status = ti_vsend_sync(serial->serial->dev,
434 UMPC_MEMORY_WRITE, buffer[i],
435 (__u16)(i + start_address), NULL, 0);
436 if (status)
437 return status;
438 }
439
440 dbg("%s - start_sddr = %x, length = %d",
441 __func__, start_address, length);
442 usb_serial_debug_data(debug, &serial->serial->dev->dev,
443 __func__, length, buffer);
444
445 return status;
446 }
447
448
449 /* Write edgeport I2C memory to TI chip */
450 static int write_i2c_mem(struct edgeport_serial *serial,
451 int start_address, int length, __u8 address_type, __u8 *buffer)
452 {
453 int status = 0;
454 int write_length;
455 __be16 be_start_address;
456
457 /* We can only send a maximum of 1 aligned byte page at a time */
458
459 /* calulate the number of bytes left in the first page */
460 write_length = EPROM_PAGE_SIZE -
461 (start_address & (EPROM_PAGE_SIZE - 1));
462
463 if (write_length > length)
464 write_length = length;
465
466 dbg("%s - BytesInFirstPage Addr = %x, length = %d",
467 __func__, start_address, write_length);
468 usb_serial_debug_data(debug, &serial->serial->dev->dev,
469 __func__, write_length, buffer);
470
471 /* Write first page */
472 be_start_address = cpu_to_be16(start_address);
473 status = ti_vsend_sync(serial->serial->dev,
474 UMPC_MEMORY_WRITE, (__u16)address_type,
475 (__force __u16)be_start_address,
476 buffer, write_length);
477 if (status) {
478 dbg("%s - ERROR %d", __func__, status);
479 return status;
480 }
481
482 length -= write_length;
483 start_address += write_length;
484 buffer += write_length;
485
486 /* We should be aligned now -- can write
487 max page size bytes at a time */
488 while (length) {
489 if (length > EPROM_PAGE_SIZE)
490 write_length = EPROM_PAGE_SIZE;
491 else
492 write_length = length;
493
494 dbg("%s - Page Write Addr = %x, length = %d",
495 __func__, start_address, write_length);
496 usb_serial_debug_data(debug, &serial->serial->dev->dev,
497 __func__, write_length, buffer);
498
499 /* Write next page */
500 be_start_address = cpu_to_be16(start_address);
501 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
502 (__u16)address_type,
503 (__force __u16)be_start_address,
504 buffer, write_length);
505 if (status) {
506 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
507 __func__, status);
508 return status;
509 }
510
511 length -= write_length;
512 start_address += write_length;
513 buffer += write_length;
514 }
515 return status;
516 }
517
518 /* Examine the UMP DMA registers and LSR
519 *
520 * Check the MSBit of the X and Y DMA byte count registers.
521 * A zero in this bit indicates that the TX DMA buffers are empty
522 * then check the TX Empty bit in the UART.
523 */
524 static int tx_active(struct edgeport_port *port)
525 {
526 int status;
527 struct out_endpoint_desc_block *oedb;
528 __u8 *lsr;
529 int bytes_left = 0;
530
531 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
532 if (!oedb) {
533 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
534 return -ENOMEM;
535 }
536
537 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
538 as not all platforms can do DMA
539 from stack */
540 if (!lsr) {
541 kfree(oedb);
542 return -ENOMEM;
543 }
544 /* Read the DMA Count Registers */
545 status = read_ram(port->port->serial->dev, port->dma_address,
546 sizeof(*oedb), (void *)oedb);
547 if (status)
548 goto exit_is_tx_active;
549
550 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount);
551
552 /* and the LSR */
553 status = read_ram(port->port->serial->dev,
554 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
555
556 if (status)
557 goto exit_is_tx_active;
558 dbg("%s - LSR = 0x%X", __func__, *lsr);
559
560 /* If either buffer has data or we are transmitting then return TRUE */
561 if ((oedb->XByteCount & 0x80) != 0)
562 bytes_left += 64;
563
564 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
565 bytes_left += 1;
566
567 /* We return Not Active if we get any kind of error */
568 exit_is_tx_active:
569 dbg("%s - return %d", __func__, bytes_left);
570
571 kfree(lsr);
572 kfree(oedb);
573 return bytes_left;
574 }
575
576 static void chase_port(struct edgeport_port *port, unsigned long timeout,
577 int flush)
578 {
579 int baud_rate;
580 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
581 wait_queue_t wait;
582 unsigned long flags;
583
584 if (!timeout)
585 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
586
587 /* wait for data to drain from the buffer */
588 spin_lock_irqsave(&port->ep_lock, flags);
589 init_waitqueue_entry(&wait, current);
590 add_wait_queue(&tty->write_wait, &wait);
591 for (;;) {
592 set_current_state(TASK_INTERRUPTIBLE);
593 if (edge_buf_data_avail(port->ep_out_buf) == 0
594 || timeout == 0 || signal_pending(current)
595 || !usb_get_intfdata(port->port->serial->interface))
596 /* disconnect */
597 break;
598 spin_unlock_irqrestore(&port->ep_lock, flags);
599 timeout = schedule_timeout(timeout);
600 spin_lock_irqsave(&port->ep_lock, flags);
601 }
602 set_current_state(TASK_RUNNING);
603 remove_wait_queue(&tty->write_wait, &wait);
604 if (flush)
605 edge_buf_clear(port->ep_out_buf);
606 spin_unlock_irqrestore(&port->ep_lock, flags);
607 tty_kref_put(tty);
608
609 /* wait for data to drain from the device */
610 timeout += jiffies;
611 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
612 && usb_get_intfdata(port->port->serial->interface)) {
613 /* not disconnected */
614 if (!tx_active(port))
615 break;
616 msleep(10);
617 }
618
619 /* disconnected */
620 if (!usb_get_intfdata(port->port->serial->interface))
621 return;
622
623 /* wait one more character time, based on baud rate */
624 /* (tx_active doesn't seem to wait for the last byte) */
625 baud_rate = port->baud_rate;
626 if (baud_rate == 0)
627 baud_rate = 50;
628 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
629 }
630
631 static int choose_config(struct usb_device *dev)
632 {
633 /*
634 * There may be multiple configurations on this device, in which case
635 * we would need to read and parse all of them to find out which one
636 * we want. However, we just support one config at this point,
637 * configuration # 1, which is Config Descriptor 0.
638 */
639
640 dbg("%s - Number of Interfaces = %d",
641 __func__, dev->config->desc.bNumInterfaces);
642 dbg("%s - MAX Power = %d",
643 __func__, dev->config->desc.bMaxPower * 2);
644
645 if (dev->config->desc.bNumInterfaces != 1) {
646 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
647 __func__);
648 return -ENODEV;
649 }
650
651 return 0;
652 }
653
654 static int read_rom(struct edgeport_serial *serial,
655 int start_address, int length, __u8 *buffer)
656 {
657 int status;
658
659 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
660 status = read_download_mem(serial->serial->dev,
661 start_address,
662 length,
663 serial->TI_I2C_Type,
664 buffer);
665 } else {
666 status = read_boot_mem(serial, start_address, length,
667 buffer);
668 }
669 return status;
670 }
671
672 static int write_rom(struct edgeport_serial *serial, int start_address,
673 int length, __u8 *buffer)
674 {
675 if (serial->product_info.TiMode == TI_MODE_BOOT)
676 return write_boot_mem(serial, start_address, length,
677 buffer);
678
679 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
680 return write_i2c_mem(serial, start_address, length,
681 serial->TI_I2C_Type, buffer);
682 return -EINVAL;
683 }
684
685
686
687 /* Read a descriptor header from I2C based on type */
688 static int get_descriptor_addr(struct edgeport_serial *serial,
689 int desc_type, struct ti_i2c_desc *rom_desc)
690 {
691 int start_address;
692 int status;
693
694 /* Search for requested descriptor in I2C */
695 start_address = 2;
696 do {
697 status = read_rom(serial,
698 start_address,
699 sizeof(struct ti_i2c_desc),
700 (__u8 *)rom_desc);
701 if (status)
702 return 0;
703
704 if (rom_desc->Type == desc_type)
705 return start_address;
706
707 start_address = start_address + sizeof(struct ti_i2c_desc)
708 + rom_desc->Size;
709
710 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
711
712 return 0;
713 }
714
715 /* Validate descriptor checksum */
716 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
717 {
718 __u16 i;
719 __u8 cs = 0;
720
721 for (i = 0; i < rom_desc->Size; i++)
722 cs = (__u8)(cs + buffer[i]);
723
724 if (cs != rom_desc->CheckSum) {
725 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
726 return -EINVAL;
727 }
728 return 0;
729 }
730
731 /* Make sure that the I2C image is good */
732 static int check_i2c_image(struct edgeport_serial *serial)
733 {
734 struct device *dev = &serial->serial->dev->dev;
735 int status = 0;
736 struct ti_i2c_desc *rom_desc;
737 int start_address = 2;
738 __u8 *buffer;
739 __u16 ttype;
740
741 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
742 if (!rom_desc) {
743 dev_err(dev, "%s - out of memory\n", __func__);
744 return -ENOMEM;
745 }
746 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
747 if (!buffer) {
748 dev_err(dev, "%s - out of memory when allocating buffer\n",
749 __func__);
750 kfree(rom_desc);
751 return -ENOMEM;
752 }
753
754 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
755 status = read_rom(serial, 0, 1, buffer);
756 if (status)
757 goto out;
758
759 if (*buffer != UMP5152 && *buffer != UMP3410) {
760 dev_err(dev, "%s - invalid buffer signature\n", __func__);
761 status = -ENODEV;
762 goto out;
763 }
764
765 do {
766 /* Validate the I2C */
767 status = read_rom(serial,
768 start_address,
769 sizeof(struct ti_i2c_desc),
770 (__u8 *)rom_desc);
771 if (status)
772 break;
773
774 if ((start_address + sizeof(struct ti_i2c_desc) +
775 rom_desc->Size) > TI_MAX_I2C_SIZE) {
776 status = -ENODEV;
777 dbg("%s - structure too big, erroring out.", __func__);
778 break;
779 }
780
781 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
782
783 /* Skip type 2 record */
784 ttype = rom_desc->Type & 0x0f;
785 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
786 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
787 /* Read the descriptor data */
788 status = read_rom(serial, start_address +
789 sizeof(struct ti_i2c_desc),
790 rom_desc->Size, buffer);
791 if (status)
792 break;
793
794 status = valid_csum(rom_desc, buffer);
795 if (status)
796 break;
797 }
798 start_address = start_address + sizeof(struct ti_i2c_desc) +
799 rom_desc->Size;
800
801 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
802 (start_address < TI_MAX_I2C_SIZE));
803
804 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
805 (start_address > TI_MAX_I2C_SIZE))
806 status = -ENODEV;
807
808 out:
809 kfree(buffer);
810 kfree(rom_desc);
811 return status;
812 }
813
814 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
815 {
816 int status;
817 int start_address;
818 struct ti_i2c_desc *rom_desc;
819 struct edge_ti_manuf_descriptor *desc;
820
821 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
822 if (!rom_desc) {
823 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
824 __func__);
825 return -ENOMEM;
826 }
827 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
828 rom_desc);
829
830 if (!start_address) {
831 dbg("%s - Edge Descriptor not found in I2C", __func__);
832 status = -ENODEV;
833 goto exit;
834 }
835
836 /* Read the descriptor data */
837 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
838 rom_desc->Size, buffer);
839 if (status)
840 goto exit;
841
842 status = valid_csum(rom_desc, buffer);
843
844 desc = (struct edge_ti_manuf_descriptor *)buffer;
845 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig);
846 dbg("%s - Version %d", __func__, desc->Version);
847 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev);
848 dbg("%s - NumPorts %d", __func__, desc->NumPorts);
849 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts);
850 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts);
851
852 exit:
853 kfree(rom_desc);
854 return status;
855 }
856
857 /* Build firmware header used for firmware update */
858 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
859 {
860 __u8 *buffer;
861 int buffer_size;
862 int i;
863 int err;
864 __u8 cs = 0;
865 struct ti_i2c_desc *i2c_header;
866 struct ti_i2c_image_header *img_header;
867 struct ti_i2c_firmware_rec *firmware_rec;
868 const struct firmware *fw;
869 const char *fw_name = "edgeport/down3.bin";
870
871 /* In order to update the I2C firmware we must change the type 2 record
872 * to type 0xF2. This will force the UMP to come up in Boot Mode.
873 * Then while in boot mode, the driver will download the latest
874 * firmware (padded to 15.5k) into the UMP ram. And finally when the
875 * device comes back up in download mode the driver will cause the new
876 * firmware to be copied from the UMP Ram to I2C and the firmware will
877 * update the record type from 0xf2 to 0x02.
878 */
879
880 /* Allocate a 15.5k buffer + 2 bytes for version number
881 * (Firmware Record) */
882 buffer_size = (((1024 * 16) - 512 ) +
883 sizeof(struct ti_i2c_firmware_rec));
884
885 buffer = kmalloc(buffer_size, GFP_KERNEL);
886 if (!buffer) {
887 dev_err(dev, "%s - out of memory\n", __func__);
888 return -ENOMEM;
889 }
890
891 // Set entire image of 0xffs
892 memset(buffer, 0xff, buffer_size);
893
894 err = request_firmware(&fw, fw_name, dev);
895 if (err) {
896 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
897 fw_name, err);
898 kfree(buffer);
899 return err;
900 }
901
902 /* Save Download Version Number */
903 OperationalMajorVersion = fw->data[0];
904 OperationalMinorVersion = fw->data[1];
905 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
906
907 /* Copy version number into firmware record */
908 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
909
910 firmware_rec->Ver_Major = OperationalMajorVersion;
911 firmware_rec->Ver_Minor = OperationalMinorVersion;
912
913 /* Pointer to fw_down memory image */
914 img_header = (struct ti_i2c_image_header *)&fw->data[4];
915
916 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
917 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
918 le16_to_cpu(img_header->Length));
919
920 release_firmware(fw);
921
922 for (i=0; i < buffer_size; i++) {
923 cs = (__u8)(cs + buffer[i]);
924 }
925
926 kfree(buffer);
927
928 /* Build new header */
929 i2c_header = (struct ti_i2c_desc *)header;
930 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
931
932 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
933 i2c_header->Size = (__u16)buffer_size;
934 i2c_header->CheckSum = cs;
935 firmware_rec->Ver_Major = OperationalMajorVersion;
936 firmware_rec->Ver_Minor = OperationalMinorVersion;
937
938 return 0;
939 }
940
941 /* Try to figure out what type of I2c we have */
942 static int i2c_type_bootmode(struct edgeport_serial *serial)
943 {
944 int status;
945 u8 *data;
946
947 data = kmalloc(1, GFP_KERNEL);
948 if (!data) {
949 dev_err(&serial->serial->dev->dev,
950 "%s - out of memory\n", __func__);
951 return -ENOMEM;
952 }
953
954 /* Try to read type 2 */
955 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
956 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
957 if (status)
958 dbg("%s - read 2 status error = %d", __func__, status);
959 else
960 dbg("%s - read 2 data = 0x%x", __func__, *data);
961 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
962 dbg("%s - ROM_TYPE_II", __func__);
963 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
964 goto out;
965 }
966
967 /* Try to read type 3 */
968 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
969 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
970 if (status)
971 dbg("%s - read 3 status error = %d", __func__, status);
972 else
973 dbg("%s - read 2 data = 0x%x", __func__, *data);
974 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
975 dbg("%s - ROM_TYPE_III", __func__);
976 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
977 goto out;
978 }
979
980 dbg("%s - Unknown", __func__);
981 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
982 status = -ENODEV;
983 out:
984 kfree(data);
985 return status;
986 }
987
988 static int bulk_xfer(struct usb_serial *serial, void *buffer,
989 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, length, num_sent, 1000);
997 return status;
998 }
999
1000 /* Download given firmware image to the device (IN BOOT MODE) */
1001 static int download_code(struct edgeport_serial *serial, __u8 *image,
1002 int image_length)
1003 {
1004 int status = 0;
1005 int pos;
1006 int transfer;
1007 int done;
1008
1009 /* Transfer firmware image */
1010 for (pos = 0; pos < image_length; ) {
1011 /* Read the next buffer from file */
1012 transfer = image_length - pos;
1013 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
1014 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
1015
1016 /* Transfer data */
1017 status = bulk_xfer(serial->serial, &image[pos],
1018 transfer, &done);
1019 if (status)
1020 break;
1021 /* Advance buffer pointer */
1022 pos += done;
1023 }
1024
1025 return status;
1026 }
1027
1028 /* FIXME!!! */
1029 static int config_boot_dev(struct usb_device *dev)
1030 {
1031 return 0;
1032 }
1033
1034 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1035 {
1036 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1037 }
1038
1039 /**
1040 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1041 *
1042 * This routine downloads the main operating code into the TI5052, using the
1043 * boot code already burned into E2PROM or ROM.
1044 */
1045 static int download_fw(struct edgeport_serial *serial)
1046 {
1047 struct device *dev = &serial->serial->dev->dev;
1048 int status = 0;
1049 int start_address;
1050 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1051 struct usb_interface_descriptor *interface;
1052 int download_cur_ver;
1053 int download_new_ver;
1054
1055 /* This routine is entered by both the BOOT mode and the Download mode
1056 * We can determine which code is running by the reading the config
1057 * descriptor and if we have only one bulk pipe it is in boot mode
1058 */
1059 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1060
1061 /* Default to type 2 i2c */
1062 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1063
1064 status = choose_config(serial->serial->dev);
1065 if (status)
1066 return status;
1067
1068 interface = &serial->serial->interface->cur_altsetting->desc;
1069 if (!interface) {
1070 dev_err(dev, "%s - no interface set, error!\n", __func__);
1071 return -ENODEV;
1072 }
1073
1074 /*
1075 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1076 * if we have more than one endpoint we are definitely in download
1077 * mode
1078 */
1079 if (interface->bNumEndpoints > 1)
1080 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1081 else
1082 /* Otherwise we will remain in configuring mode */
1083 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1084
1085 /********************************************************************/
1086 /* Download Mode */
1087 /********************************************************************/
1088 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1089 struct ti_i2c_desc *rom_desc;
1090
1091 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1092
1093 status = check_i2c_image(serial);
1094 if (status) {
1095 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1096 return status;
1097 }
1098
1099 /* Validate Hardware version number
1100 * Read Manufacturing Descriptor from TI Based Edgeport
1101 */
1102 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1103 if (!ti_manuf_desc) {
1104 dev_err(dev, "%s - out of memory.\n", __func__);
1105 return -ENOMEM;
1106 }
1107 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1108 if (status) {
1109 kfree(ti_manuf_desc);
1110 return status;
1111 }
1112
1113 /* Check version number of ION descriptor */
1114 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1115 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1116 __func__, ti_cpu_rev(ti_manuf_desc));
1117 kfree(ti_manuf_desc);
1118 return -EINVAL;
1119 }
1120
1121 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1122 if (!rom_desc) {
1123 dev_err(dev, "%s - out of memory.\n", __func__);
1124 kfree(ti_manuf_desc);
1125 return -ENOMEM;
1126 }
1127
1128 /* Search for type 2 record (firmware record) */
1129 start_address = get_descriptor_addr(serial,
1130 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1131 if (start_address != 0) {
1132 struct ti_i2c_firmware_rec *firmware_version;
1133 u8 *record;
1134
1135 dbg("%s - Found Type FIRMWARE (Type 2) record",
1136 __func__);
1137
1138 firmware_version = kmalloc(sizeof(*firmware_version),
1139 GFP_KERNEL);
1140 if (!firmware_version) {
1141 dev_err(dev, "%s - out of memory.\n", __func__);
1142 kfree(rom_desc);
1143 kfree(ti_manuf_desc);
1144 return -ENOMEM;
1145 }
1146
1147 /* Validate version number
1148 * Read the descriptor data
1149 */
1150 status = read_rom(serial, start_address +
1151 sizeof(struct ti_i2c_desc),
1152 sizeof(struct ti_i2c_firmware_rec),
1153 (__u8 *)firmware_version);
1154 if (status) {
1155 kfree(firmware_version);
1156 kfree(rom_desc);
1157 kfree(ti_manuf_desc);
1158 return status;
1159 }
1160
1161 /* Check version number of download with current
1162 version in I2c */
1163 download_cur_ver = (firmware_version->Ver_Major << 8) +
1164 (firmware_version->Ver_Minor);
1165 download_new_ver = (OperationalMajorVersion << 8) +
1166 (OperationalMinorVersion);
1167
1168 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d",
1169 __func__,
1170 firmware_version->Ver_Major,
1171 firmware_version->Ver_Minor,
1172 OperationalMajorVersion,
1173 OperationalMinorVersion);
1174
1175 /* Check if we have an old version in the I2C and
1176 update if necessary */
1177 if (download_cur_ver != download_new_ver) {
1178 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1179 __func__,
1180 firmware_version->Ver_Major,
1181 firmware_version->Ver_Minor,
1182 OperationalMajorVersion,
1183 OperationalMinorVersion);
1184
1185 record = kmalloc(1, GFP_KERNEL);
1186 if (!record) {
1187 dev_err(dev, "%s - out of memory.\n",
1188 __func__);
1189 kfree(firmware_version);
1190 kfree(rom_desc);
1191 kfree(ti_manuf_desc);
1192 return -ENOMEM;
1193 }
1194 /* In order to update the I2C firmware we must
1195 * change the type 2 record to type 0xF2. This
1196 * will force the UMP to come up in Boot Mode.
1197 * Then while in boot mode, the driver will
1198 * download the latest firmware (padded to
1199 * 15.5k) into the UMP ram. Finally when the
1200 * device comes back up in download mode the
1201 * driver will cause the new firmware to be
1202 * copied from the UMP Ram to I2C and the
1203 * firmware will update the record type from
1204 * 0xf2 to 0x02.
1205 */
1206 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1207
1208 /* Change the I2C Firmware record type to
1209 0xf2 to trigger an update */
1210 status = write_rom(serial, start_address,
1211 sizeof(*record), record);
1212 if (status) {
1213 kfree(record);
1214 kfree(firmware_version);
1215 kfree(rom_desc);
1216 kfree(ti_manuf_desc);
1217 return status;
1218 }
1219
1220 /* verify the write -- must do this in order
1221 * for write to complete before we do the
1222 * hardware reset
1223 */
1224 status = read_rom(serial,
1225 start_address,
1226 sizeof(*record),
1227 record);
1228 if (status) {
1229 kfree(record);
1230 kfree(firmware_version);
1231 kfree(rom_desc);
1232 kfree(ti_manuf_desc);
1233 return status;
1234 }
1235
1236 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1237 dev_err(dev,
1238 "%s - error resetting device\n",
1239 __func__);
1240 kfree(record);
1241 kfree(firmware_version);
1242 kfree(rom_desc);
1243 kfree(ti_manuf_desc);
1244 return -ENODEV;
1245 }
1246
1247 dbg("%s - HARDWARE RESET", __func__);
1248
1249 /* Reset UMP -- Back to BOOT MODE */
1250 status = ti_vsend_sync(serial->serial->dev,
1251 UMPC_HARDWARE_RESET,
1252 0, 0, NULL, 0);
1253
1254 dbg("%s - HARDWARE RESET return %d",
1255 __func__, status);
1256
1257 /* return an error on purpose. */
1258 kfree(record);
1259 kfree(firmware_version);
1260 kfree(rom_desc);
1261 kfree(ti_manuf_desc);
1262 return -ENODEV;
1263 }
1264 kfree(firmware_version);
1265 }
1266 /* Search for type 0xF2 record (firmware blank record) */
1267 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1268 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1269 sizeof(struct ti_i2c_firmware_rec))
1270 __u8 *header;
1271 __u8 *vheader;
1272
1273 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1274 if (!header) {
1275 dev_err(dev, "%s - out of memory.\n", __func__);
1276 kfree(rom_desc);
1277 kfree(ti_manuf_desc);
1278 return -ENOMEM;
1279 }
1280
1281 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1282 if (!vheader) {
1283 dev_err(dev, "%s - out of memory.\n", __func__);
1284 kfree(header);
1285 kfree(rom_desc);
1286 kfree(ti_manuf_desc);
1287 return -ENOMEM;
1288 }
1289
1290 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1291 __func__);
1292
1293 /*
1294 * In order to update the I2C firmware we must change
1295 * the type 2 record to type 0xF2. This will force the
1296 * UMP to come up in Boot Mode. Then while in boot
1297 * mode, the driver will download the latest firmware
1298 * (padded to 15.5k) into the UMP ram. Finally when the
1299 * device comes back up in download mode the driver
1300 * will cause the new firmware to be copied from the
1301 * UMP Ram to I2C and the firmware will update the
1302 * record type from 0xf2 to 0x02.
1303 */
1304 status = build_i2c_fw_hdr(header, dev);
1305 if (status) {
1306 kfree(vheader);
1307 kfree(header);
1308 kfree(rom_desc);
1309 kfree(ti_manuf_desc);
1310 return status;
1311 }
1312
1313 /* Update I2C with type 0xf2 record with correct
1314 size and checksum */
1315 status = write_rom(serial,
1316 start_address,
1317 HEADER_SIZE,
1318 header);
1319 if (status) {
1320 kfree(vheader);
1321 kfree(header);
1322 kfree(rom_desc);
1323 kfree(ti_manuf_desc);
1324 return status;
1325 }
1326
1327 /* verify the write -- must do this in order for
1328 write to complete before we do the hardware reset */
1329 status = read_rom(serial, start_address,
1330 HEADER_SIZE, vheader);
1331
1332 if (status) {
1333 dbg("%s - can't read header back", __func__);
1334 kfree(vheader);
1335 kfree(header);
1336 kfree(rom_desc);
1337 kfree(ti_manuf_desc);
1338 return status;
1339 }
1340 if (memcmp(vheader, header, HEADER_SIZE)) {
1341 dbg("%s - write download record failed",
1342 __func__);
1343 kfree(vheader);
1344 kfree(header);
1345 kfree(rom_desc);
1346 kfree(ti_manuf_desc);
1347 return status;
1348 }
1349
1350 kfree(vheader);
1351 kfree(header);
1352
1353 dbg("%s - Start firmware update", __func__);
1354
1355 /* Tell firmware to copy download image into I2C */
1356 status = ti_vsend_sync(serial->serial->dev,
1357 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1358
1359 dbg("%s - Update complete 0x%x", __func__, status);
1360 if (status) {
1361 dev_err(dev,
1362 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1363 __func__);
1364 kfree(rom_desc);
1365 kfree(ti_manuf_desc);
1366 return status;
1367 }
1368 }
1369
1370 // The device is running the download code
1371 kfree(rom_desc);
1372 kfree(ti_manuf_desc);
1373 return 0;
1374 }
1375
1376 /********************************************************************/
1377 /* Boot Mode */
1378 /********************************************************************/
1379 dbg("%s - RUNNING IN BOOT MODE", __func__);
1380
1381 /* Configure the TI device so we can use the BULK pipes for download */
1382 status = config_boot_dev(serial->serial->dev);
1383 if (status)
1384 return status;
1385
1386 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1387 != USB_VENDOR_ID_ION) {
1388 dbg("%s - VID = 0x%x", __func__,
1389 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1390 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1391 goto stayinbootmode;
1392 }
1393
1394 /* We have an ION device (I2c Must be programmed)
1395 Determine I2C image type */
1396 if (i2c_type_bootmode(serial))
1397 goto stayinbootmode;
1398
1399 /* Check for ION Vendor ID and that the I2C is valid */
1400 if (!check_i2c_image(serial)) {
1401 struct ti_i2c_image_header *header;
1402 int i;
1403 __u8 cs = 0;
1404 __u8 *buffer;
1405 int buffer_size;
1406 int err;
1407 const struct firmware *fw;
1408 const char *fw_name = "edgeport/down3.bin";
1409
1410 /* Validate Hardware version number
1411 * Read Manufacturing Descriptor from TI Based Edgeport
1412 */
1413 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1414 if (!ti_manuf_desc) {
1415 dev_err(dev, "%s - out of memory.\n", __func__);
1416 return -ENOMEM;
1417 }
1418 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1419 if (status) {
1420 kfree(ti_manuf_desc);
1421 goto stayinbootmode;
1422 }
1423
1424 /* Check for version 2 */
1425 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1426 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1427 __func__, ti_cpu_rev(ti_manuf_desc));
1428 kfree(ti_manuf_desc);
1429 goto stayinbootmode;
1430 }
1431
1432 kfree(ti_manuf_desc);
1433
1434 /*
1435 * In order to update the I2C firmware we must change the type
1436 * 2 record to type 0xF2. This will force the UMP to come up
1437 * in Boot Mode. Then while in boot mode, the driver will
1438 * download the latest firmware (padded to 15.5k) into the
1439 * UMP ram. Finally when the device comes back up in download
1440 * mode the driver will cause the new firmware to be copied
1441 * from the UMP Ram to I2C and the firmware will update the
1442 * record type from 0xf2 to 0x02.
1443 *
1444 * Do we really have to copy the whole firmware image,
1445 * or could we do this in place!
1446 */
1447
1448 /* Allocate a 15.5k buffer + 3 byte header */
1449 buffer_size = (((1024 * 16) - 512) +
1450 sizeof(struct ti_i2c_image_header));
1451 buffer = kmalloc(buffer_size, GFP_KERNEL);
1452 if (!buffer) {
1453 dev_err(dev, "%s - out of memory\n", __func__);
1454 return -ENOMEM;
1455 }
1456
1457 /* Initialize the buffer to 0xff (pad the buffer) */
1458 memset(buffer, 0xff, buffer_size);
1459
1460 err = request_firmware(&fw, fw_name, dev);
1461 if (err) {
1462 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1463 fw_name, err);
1464 kfree(buffer);
1465 return err;
1466 }
1467 memcpy(buffer, &fw->data[4], fw->size - 4);
1468 release_firmware(fw);
1469
1470 for (i = sizeof(struct ti_i2c_image_header);
1471 i < buffer_size; i++) {
1472 cs = (__u8)(cs + buffer[i]);
1473 }
1474
1475 header = (struct ti_i2c_image_header *)buffer;
1476
1477 /* update length and checksum after padding */
1478 header->Length = cpu_to_le16((__u16)(buffer_size -
1479 sizeof(struct ti_i2c_image_header)));
1480 header->CheckSum = cs;
1481
1482 /* Download the operational code */
1483 dbg("%s - Downloading operational code image (TI UMP)",
1484 __func__);
1485 status = download_code(serial, buffer, buffer_size);
1486
1487 kfree(buffer);
1488
1489 if (status) {
1490 dbg("%s - Error downloading operational code image",
1491 __func__);
1492 return status;
1493 }
1494
1495 /* Device will reboot */
1496 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1497
1498 dbg("%s - Download successful -- Device rebooting...",
1499 __func__);
1500
1501 /* return an error on purpose */
1502 return -ENODEV;
1503 }
1504
1505 stayinbootmode:
1506 /* Eprom is invalid or blank stay in boot mode */
1507 dbg("%s - STAYING IN BOOT MODE", __func__);
1508 serial->product_info.TiMode = TI_MODE_BOOT;
1509
1510 return 0;
1511 }
1512
1513
1514 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1515 {
1516 int port_number = port->port->number - port->port->serial->minor;
1517 on = !!on; /* 1 or 0 not bitmask */
1518 return send_cmd(port->port->serial->dev,
1519 feature, (__u8)(UMPM_UART1_PORT + port_number),
1520 on, NULL, 0);
1521 }
1522
1523
1524 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1525 {
1526 int status = 0;
1527
1528 dbg("%s - %x", __func__, mcr);
1529
1530 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1531 if (status)
1532 return status;
1533 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1534 if (status)
1535 return status;
1536 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1537 }
1538
1539 /* Convert TI LSR to standard UART flags */
1540 static __u8 map_line_status(__u8 ti_lsr)
1541 {
1542 __u8 lsr = 0;
1543
1544 #define MAP_FLAG(flagUmp, flagUart) \
1545 if (ti_lsr & flagUmp) \
1546 lsr |= flagUart;
1547
1548 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1549 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1550 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1551 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1552 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1553 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1554
1555 #undef MAP_FLAG
1556
1557 return lsr;
1558 }
1559
1560 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1561 {
1562 struct async_icount *icount;
1563 struct tty_struct *tty;
1564
1565 dbg("%s - %02x", __func__, msr);
1566
1567 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1568 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1569 icount = &edge_port->icount;
1570
1571 /* update input line counters */
1572 if (msr & EDGEPORT_MSR_DELTA_CTS)
1573 icount->cts++;
1574 if (msr & EDGEPORT_MSR_DELTA_DSR)
1575 icount->dsr++;
1576 if (msr & EDGEPORT_MSR_DELTA_CD)
1577 icount->dcd++;
1578 if (msr & EDGEPORT_MSR_DELTA_RI)
1579 icount->rng++;
1580 wake_up_interruptible(&edge_port->delta_msr_wait);
1581 }
1582
1583 /* Save the new modem status */
1584 edge_port->shadow_msr = msr & 0xf0;
1585
1586 tty = tty_port_tty_get(&edge_port->port->port);
1587 /* handle CTS flow control */
1588 if (tty && C_CRTSCTS(tty)) {
1589 if (msr & EDGEPORT_MSR_CTS) {
1590 tty->hw_stopped = 0;
1591 tty_wakeup(tty);
1592 } else {
1593 tty->hw_stopped = 1;
1594 }
1595 }
1596 tty_kref_put(tty);
1597
1598 return;
1599 }
1600
1601 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1602 __u8 lsr, __u8 data)
1603 {
1604 struct async_icount *icount;
1605 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1606 LSR_FRM_ERR | LSR_BREAK));
1607 struct tty_struct *tty;
1608
1609 dbg("%s - %02x", __func__, new_lsr);
1610
1611 edge_port->shadow_lsr = lsr;
1612
1613 if (new_lsr & LSR_BREAK)
1614 /*
1615 * Parity and Framing errors only count if they
1616 * occur exclusive of a break being received.
1617 */
1618 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1619
1620 /* Place LSR data byte into Rx buffer */
1621 if (lsr_data) {
1622 tty = tty_port_tty_get(&edge_port->port->port);
1623 if (tty) {
1624 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1625 tty_kref_put(tty);
1626 }
1627 }
1628
1629 /* update input line counters */
1630 icount = &edge_port->icount;
1631 if (new_lsr & LSR_BREAK)
1632 icount->brk++;
1633 if (new_lsr & LSR_OVER_ERR)
1634 icount->overrun++;
1635 if (new_lsr & LSR_PAR_ERR)
1636 icount->parity++;
1637 if (new_lsr & LSR_FRM_ERR)
1638 icount->frame++;
1639 }
1640
1641
1642 static void edge_interrupt_callback(struct urb *urb)
1643 {
1644 struct edgeport_serial *edge_serial = urb->context;
1645 struct usb_serial_port *port;
1646 struct edgeport_port *edge_port;
1647 unsigned char *data = urb->transfer_buffer;
1648 int length = urb->actual_length;
1649 int port_number;
1650 int function;
1651 int retval;
1652 __u8 lsr;
1653 __u8 msr;
1654 int status = urb->status;
1655
1656 dbg("%s", __func__);
1657
1658 switch (status) {
1659 case 0:
1660 /* success */
1661 break;
1662 case -ECONNRESET:
1663 case -ENOENT:
1664 case -ESHUTDOWN:
1665 /* this urb is terminated, clean up */
1666 dbg("%s - urb shutting down with status: %d",
1667 __func__, status);
1668 return;
1669 default:
1670 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1671 "%d\n", __func__, status);
1672 goto exit;
1673 }
1674
1675 if (!length) {
1676 dbg("%s - no data in urb", __func__);
1677 goto exit;
1678 }
1679
1680 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1681 __func__, length, data);
1682
1683 if (length != 2) {
1684 dbg("%s - expecting packet of size 2, got %d",
1685 __func__, length);
1686 goto exit;
1687 }
1688
1689 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1690 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1691 dbg("%s - port_number %d, function %d, info 0x%x",
1692 __func__, port_number, function, data[1]);
1693 port = edge_serial->serial->port[port_number];
1694 edge_port = usb_get_serial_port_data(port);
1695 if (!edge_port) {
1696 dbg("%s - edge_port not found", __func__);
1697 return;
1698 }
1699 switch (function) {
1700 case TIUMP_INTERRUPT_CODE_LSR:
1701 lsr = map_line_status(data[1]);
1702 if (lsr & UMP_UART_LSR_DATA_MASK) {
1703 /* Save the LSR event for bulk read
1704 completion routine */
1705 dbg("%s - LSR Event Port %u LSR Status = %02x",
1706 __func__, port_number, lsr);
1707 edge_port->lsr_event = 1;
1708 edge_port->lsr_mask = lsr;
1709 } else {
1710 dbg("%s - ===== Port %d LSR Status = %02x ======",
1711 __func__, port_number, lsr);
1712 handle_new_lsr(edge_port, 0, lsr, 0);
1713 }
1714 break;
1715
1716 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1717 /* Copy MSR from UMP */
1718 msr = data[1];
1719 dbg("%s - ===== Port %u MSR Status = %02x ======",
1720 __func__, port_number, msr);
1721 handle_new_msr(edge_port, msr);
1722 break;
1723
1724 default:
1725 dev_err(&urb->dev->dev,
1726 "%s - Unknown Interrupt code from UMP %x\n",
1727 __func__, data[1]);
1728 break;
1729
1730 }
1731
1732 exit:
1733 retval = usb_submit_urb(urb, GFP_ATOMIC);
1734 if (retval)
1735 dev_err(&urb->dev->dev,
1736 "%s - usb_submit_urb failed with result %d\n",
1737 __func__, retval);
1738 }
1739
1740 static void edge_bulk_in_callback(struct urb *urb)
1741 {
1742 struct edgeport_port *edge_port = urb->context;
1743 unsigned char *data = urb->transfer_buffer;
1744 struct tty_struct *tty;
1745 int retval = 0;
1746 int port_number;
1747 int status = urb->status;
1748
1749 dbg("%s", __func__);
1750
1751 switch (status) {
1752 case 0:
1753 /* success */
1754 break;
1755 case -ECONNRESET:
1756 case -ENOENT:
1757 case -ESHUTDOWN:
1758 /* this urb is terminated, clean up */
1759 dbg("%s - urb shutting down with status: %d",
1760 __func__, status);
1761 return;
1762 default:
1763 dev_err(&urb->dev->dev,
1764 "%s - nonzero read bulk status received: %d\n",
1765 __func__, status);
1766 }
1767
1768 if (status == -EPIPE)
1769 goto exit;
1770
1771 if (status) {
1772 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1773 return;
1774 }
1775
1776 port_number = edge_port->port->number - edge_port->port->serial->minor;
1777
1778 if (edge_port->lsr_event) {
1779 edge_port->lsr_event = 0;
1780 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1781 __func__, port_number, edge_port->lsr_mask, *data);
1782 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1783 /* Adjust buffer length/pointer */
1784 --urb->actual_length;
1785 ++data;
1786 }
1787
1788 tty = tty_port_tty_get(&edge_port->port->port);
1789 if (tty && urb->actual_length) {
1790 usb_serial_debug_data(debug, &edge_port->port->dev,
1791 __func__, urb->actual_length, data);
1792 if (edge_port->close_pending)
1793 dbg("%s - close pending, dropping data on the floor",
1794 __func__);
1795 else
1796 edge_tty_recv(&edge_port->port->dev, tty, data,
1797 urb->actual_length);
1798 edge_port->icount.rx += urb->actual_length;
1799 }
1800 tty_kref_put(tty);
1801
1802 exit:
1803 /* continue read unless stopped */
1804 spin_lock(&edge_port->ep_lock);
1805 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1806 urb->dev = edge_port->port->serial->dev;
1807 retval = usb_submit_urb(urb, GFP_ATOMIC);
1808 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1809 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1810 }
1811 spin_unlock(&edge_port->ep_lock);
1812 if (retval)
1813 dev_err(&urb->dev->dev,
1814 "%s - usb_submit_urb failed with result %d\n",
1815 __func__, retval);
1816 }
1817
1818 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1819 unsigned char *data, int length)
1820 {
1821 int queued;
1822
1823 queued = tty_insert_flip_string(tty, data, length);
1824 if (queued < length)
1825 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1826 __func__, length - queued);
1827 tty_flip_buffer_push(tty);
1828 }
1829
1830 static void edge_bulk_out_callback(struct urb *urb)
1831 {
1832 struct usb_serial_port *port = urb->context;
1833 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1834 int status = urb->status;
1835 struct tty_struct *tty;
1836
1837 dbg("%s - port %d", __func__, port->number);
1838
1839 edge_port->ep_write_urb_in_use = 0;
1840
1841 switch (status) {
1842 case 0:
1843 /* success */
1844 break;
1845 case -ECONNRESET:
1846 case -ENOENT:
1847 case -ESHUTDOWN:
1848 /* this urb is terminated, clean up */
1849 dbg("%s - urb shutting down with status: %d",
1850 __func__, status);
1851 return;
1852 default:
1853 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1854 "received: %d\n", __func__, status);
1855 }
1856
1857 /* send any buffered data */
1858 tty = tty_port_tty_get(&port->port);
1859 edge_send(tty);
1860 tty_kref_put(tty);
1861 }
1862
1863 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1864 {
1865 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1866 struct edgeport_serial *edge_serial;
1867 struct usb_device *dev;
1868 struct urb *urb;
1869 int port_number;
1870 int status;
1871 u16 open_settings;
1872 u8 transaction_timeout;
1873
1874 dbg("%s - port %d", __func__, port->number);
1875
1876 if (edge_port == NULL)
1877 return -ENODEV;
1878
1879 port_number = port->number - port->serial->minor;
1880 switch (port_number) {
1881 case 0:
1882 edge_port->uart_base = UMPMEM_BASE_UART1;
1883 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1884 break;
1885 case 1:
1886 edge_port->uart_base = UMPMEM_BASE_UART2;
1887 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1888 break;
1889 default:
1890 dev_err(&port->dev, "Unknown port number!!!\n");
1891 return -ENODEV;
1892 }
1893
1894 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1895 __func__, port_number, edge_port->uart_base,
1896 edge_port->dma_address);
1897
1898 dev = port->serial->dev;
1899
1900 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1901 init_waitqueue_head(&edge_port->delta_msr_wait);
1902
1903 /* turn off loopback */
1904 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1905 if (status) {
1906 dev_err(&port->dev,
1907 "%s - cannot send clear loopback command, %d\n",
1908 __func__, status);
1909 return status;
1910 }
1911
1912 /* set up the port settings */
1913 if (tty)
1914 edge_set_termios(tty, port, tty->termios);
1915
1916 /* open up the port */
1917
1918 /* milliseconds to timeout for DMA transfer */
1919 transaction_timeout = 2;
1920
1921 edge_port->ump_read_timeout =
1922 max(20, ((transaction_timeout * 3) / 2));
1923
1924 /* milliseconds to timeout for DMA transfer */
1925 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1926 UMP_PIPE_TRANS_TIMEOUT_ENA |
1927 (transaction_timeout << 2));
1928
1929 dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1930
1931 /* Tell TI to open and start the port */
1932 status = send_cmd(dev, UMPC_OPEN_PORT,
1933 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1934 if (status) {
1935 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1936 __func__, status);
1937 return status;
1938 }
1939
1940 /* Start the DMA? */
1941 status = send_cmd(dev, UMPC_START_PORT,
1942 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1943 if (status) {
1944 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1945 __func__, status);
1946 return status;
1947 }
1948
1949 /* Clear TX and RX buffers in UMP */
1950 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1951 if (status) {
1952 dev_err(&port->dev,
1953 "%s - cannot send clear buffers command, %d\n",
1954 __func__, status);
1955 return status;
1956 }
1957
1958 /* Read Initial MSR */
1959 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1960 (__u16)(UMPM_UART1_PORT + port_number),
1961 &edge_port->shadow_msr, 1);
1962 if (status) {
1963 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1964 __func__, status);
1965 return status;
1966 }
1967
1968 dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1969
1970 /* Set Initial MCR */
1971 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1972 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1973
1974 edge_serial = edge_port->edge_serial;
1975 if (mutex_lock_interruptible(&edge_serial->es_lock))
1976 return -ERESTARTSYS;
1977 if (edge_serial->num_ports_open == 0) {
1978 /* we are the first port to open, post the interrupt urb */
1979 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1980 if (!urb) {
1981 dev_err(&port->dev,
1982 "%s - no interrupt urb present, exiting\n",
1983 __func__);
1984 status = -EINVAL;
1985 goto release_es_lock;
1986 }
1987 urb->complete = edge_interrupt_callback;
1988 urb->context = edge_serial;
1989 urb->dev = dev;
1990 status = usb_submit_urb(urb, GFP_KERNEL);
1991 if (status) {
1992 dev_err(&port->dev,
1993 "%s - usb_submit_urb failed with value %d\n",
1994 __func__, status);
1995 goto release_es_lock;
1996 }
1997 }
1998
1999 /*
2000 * reset the data toggle on the bulk endpoints to work around bug in
2001 * host controllers where things get out of sync some times
2002 */
2003 usb_clear_halt(dev, port->write_urb->pipe);
2004 usb_clear_halt(dev, port->read_urb->pipe);
2005
2006 /* start up our bulk read urb */
2007 urb = port->read_urb;
2008 if (!urb) {
2009 dev_err(&port->dev, "%s - no read urb present, exiting\n",
2010 __func__);
2011 status = -EINVAL;
2012 goto unlink_int_urb;
2013 }
2014 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2015 urb->complete = edge_bulk_in_callback;
2016 urb->context = edge_port;
2017 urb->dev = dev;
2018 status = usb_submit_urb(urb, GFP_KERNEL);
2019 if (status) {
2020 dev_err(&port->dev,
2021 "%s - read bulk usb_submit_urb failed with value %d\n",
2022 __func__, status);
2023 goto unlink_int_urb;
2024 }
2025
2026 ++edge_serial->num_ports_open;
2027
2028 dbg("%s - exited", __func__);
2029
2030 goto release_es_lock;
2031
2032 unlink_int_urb:
2033 if (edge_port->edge_serial->num_ports_open == 0)
2034 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2035 release_es_lock:
2036 mutex_unlock(&edge_serial->es_lock);
2037 return status;
2038 }
2039
2040 static void edge_close(struct usb_serial_port *port)
2041 {
2042 struct edgeport_serial *edge_serial;
2043 struct edgeport_port *edge_port;
2044 int port_number;
2045 int status;
2046
2047 dbg("%s - port %d", __func__, port->number);
2048
2049 edge_serial = usb_get_serial_data(port->serial);
2050 edge_port = usb_get_serial_port_data(port);
2051 if (edge_serial == NULL || edge_port == NULL)
2052 return;
2053
2054 /* The bulkreadcompletion routine will check
2055 * this flag and dump add read data */
2056 edge_port->close_pending = 1;
2057
2058 /* chase the port close and flush */
2059 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2060
2061 usb_kill_urb(port->read_urb);
2062 usb_kill_urb(port->write_urb);
2063 edge_port->ep_write_urb_in_use = 0;
2064
2065 /* assuming we can still talk to the device,
2066 * send a close port command to it */
2067 dbg("%s - send umpc_close_port", __func__);
2068 port_number = port->number - port->serial->minor;
2069 status = send_cmd(port->serial->dev,
2070 UMPC_CLOSE_PORT,
2071 (__u8)(UMPM_UART1_PORT + port_number),
2072 0,
2073 NULL,
2074 0);
2075 mutex_lock(&edge_serial->es_lock);
2076 --edge_port->edge_serial->num_ports_open;
2077 if (edge_port->edge_serial->num_ports_open <= 0) {
2078 /* last port is now closed, let's shut down our interrupt urb */
2079 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2080 edge_port->edge_serial->num_ports_open = 0;
2081 }
2082 mutex_unlock(&edge_serial->es_lock);
2083 edge_port->close_pending = 0;
2084
2085 dbg("%s - exited", __func__);
2086 }
2087
2088 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2089 const unsigned char *data, int count)
2090 {
2091 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2092 unsigned long flags;
2093
2094 dbg("%s - port %d", __func__, port->number);
2095
2096 if (count == 0) {
2097 dbg("%s - write request of 0 bytes", __func__);
2098 return 0;
2099 }
2100
2101 if (edge_port == NULL)
2102 return -ENODEV;
2103 if (edge_port->close_pending == 1)
2104 return -ENODEV;
2105
2106 spin_lock_irqsave(&edge_port->ep_lock, flags);
2107 count = edge_buf_put(edge_port->ep_out_buf, data, count);
2108 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2109
2110 edge_send(tty);
2111
2112 return count;
2113 }
2114
2115 static void edge_send(struct tty_struct *tty)
2116 {
2117 struct usb_serial_port *port = tty->driver_data;
2118 int count, result;
2119 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2120 unsigned long flags;
2121
2122
2123 dbg("%s - port %d", __func__, port->number);
2124
2125 spin_lock_irqsave(&edge_port->ep_lock, flags);
2126
2127 if (edge_port->ep_write_urb_in_use) {
2128 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2129 return;
2130 }
2131
2132 count = edge_buf_get(edge_port->ep_out_buf,
2133 port->write_urb->transfer_buffer,
2134 port->bulk_out_size);
2135
2136 if (count == 0) {
2137 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2138 return;
2139 }
2140
2141 edge_port->ep_write_urb_in_use = 1;
2142
2143 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2144
2145 usb_serial_debug_data(debug, &port->dev, __func__, count,
2146 port->write_urb->transfer_buffer);
2147
2148 /* set up our urb */
2149 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
2150 usb_sndbulkpipe(port->serial->dev,
2151 port->bulk_out_endpointAddress),
2152 port->write_urb->transfer_buffer, count,
2153 edge_bulk_out_callback,
2154 port);
2155
2156 /* send the data out the bulk port */
2157 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2158 if (result) {
2159 dev_err(&port->dev,
2160 "%s - failed submitting write urb, error %d\n",
2161 __func__, result);
2162 edge_port->ep_write_urb_in_use = 0;
2163 /* TODO: reschedule edge_send */
2164 } else
2165 edge_port->icount.tx += count;
2166
2167 /* wakeup any process waiting for writes to complete */
2168 /* there is now more room in the buffer for new writes */
2169 if (tty)
2170 tty_wakeup(tty);
2171 }
2172
2173 static int edge_write_room(struct tty_struct *tty)
2174 {
2175 struct usb_serial_port *port = tty->driver_data;
2176 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2177 int room = 0;
2178 unsigned long flags;
2179
2180 dbg("%s - port %d", __func__, port->number);
2181
2182 if (edge_port == NULL)
2183 return 0;
2184 if (edge_port->close_pending == 1)
2185 return 0;
2186
2187 spin_lock_irqsave(&edge_port->ep_lock, flags);
2188 room = edge_buf_space_avail(edge_port->ep_out_buf);
2189 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2190
2191 dbg("%s - returns %d", __func__, room);
2192 return room;
2193 }
2194
2195 static int edge_chars_in_buffer(struct tty_struct *tty)
2196 {
2197 struct usb_serial_port *port = tty->driver_data;
2198 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2199 int chars = 0;
2200 unsigned long flags;
2201
2202 dbg("%s - port %d", __func__, port->number);
2203
2204 if (edge_port == NULL)
2205 return 0;
2206 if (edge_port->close_pending == 1)
2207 return 0;
2208
2209 spin_lock_irqsave(&edge_port->ep_lock, flags);
2210 chars = edge_buf_data_avail(edge_port->ep_out_buf);
2211 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2212
2213 dbg("%s - returns %d", __func__, chars);
2214 return chars;
2215 }
2216
2217 static void edge_throttle(struct tty_struct *tty)
2218 {
2219 struct usb_serial_port *port = tty->driver_data;
2220 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2221 int status;
2222
2223 dbg("%s - port %d", __func__, port->number);
2224
2225 if (edge_port == NULL)
2226 return;
2227
2228 /* if we are implementing XON/XOFF, send the stop character */
2229 if (I_IXOFF(tty)) {
2230 unsigned char stop_char = STOP_CHAR(tty);
2231 status = edge_write(tty, port, &stop_char, 1);
2232 if (status <= 0) {
2233 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2234 }
2235 }
2236
2237 /* if we are implementing RTS/CTS, stop reads */
2238 /* and the Edgeport will clear the RTS line */
2239 if (C_CRTSCTS(tty))
2240 stop_read(edge_port);
2241
2242 }
2243
2244 static void edge_unthrottle(struct tty_struct *tty)
2245 {
2246 struct usb_serial_port *port = tty->driver_data;
2247 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2248 int status;
2249
2250 dbg("%s - port %d", __func__, port->number);
2251
2252 if (edge_port == NULL)
2253 return;
2254
2255 /* if we are implementing XON/XOFF, send the start character */
2256 if (I_IXOFF(tty)) {
2257 unsigned char start_char = START_CHAR(tty);
2258 status = edge_write(tty, port, &start_char, 1);
2259 if (status <= 0) {
2260 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2261 }
2262 }
2263 /* if we are implementing RTS/CTS, restart reads */
2264 /* are the Edgeport will assert the RTS line */
2265 if (C_CRTSCTS(tty)) {
2266 status = restart_read(edge_port);
2267 if (status)
2268 dev_err(&port->dev,
2269 "%s - read bulk usb_submit_urb failed: %d\n",
2270 __func__, status);
2271 }
2272
2273 }
2274
2275 static void stop_read(struct edgeport_port *edge_port)
2276 {
2277 unsigned long flags;
2278
2279 spin_lock_irqsave(&edge_port->ep_lock, flags);
2280
2281 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2282 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2283 edge_port->shadow_mcr &= ~MCR_RTS;
2284
2285 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2286 }
2287
2288 static int restart_read(struct edgeport_port *edge_port)
2289 {
2290 struct urb *urb;
2291 int status = 0;
2292 unsigned long flags;
2293
2294 spin_lock_irqsave(&edge_port->ep_lock, flags);
2295
2296 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2297 urb = edge_port->port->read_urb;
2298 urb->complete = edge_bulk_in_callback;
2299 urb->context = edge_port;
2300 urb->dev = edge_port->port->serial->dev;
2301 status = usb_submit_urb(urb, GFP_ATOMIC);
2302 }
2303 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2304 edge_port->shadow_mcr |= MCR_RTS;
2305
2306 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2307
2308 return status;
2309 }
2310
2311 static void change_port_settings(struct tty_struct *tty,
2312 struct edgeport_port *edge_port, struct ktermios *old_termios)
2313 {
2314 struct ump_uart_config *config;
2315 int baud;
2316 unsigned cflag;
2317 int status;
2318 int port_number = edge_port->port->number -
2319 edge_port->port->serial->minor;
2320
2321 dbg("%s - port %d", __func__, edge_port->port->number);
2322
2323 config = kmalloc (sizeof (*config), GFP_KERNEL);
2324 if (!config) {
2325 *tty->termios = *old_termios;
2326 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2327 __func__);
2328 return;
2329 }
2330
2331 cflag = tty->termios->c_cflag;
2332
2333 config->wFlags = 0;
2334
2335 /* These flags must be set */
2336 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2337 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2338 config->bUartMode = (__u8)(edge_port->bUartMode);
2339
2340 switch (cflag & CSIZE) {
2341 case CS5:
2342 config->bDataBits = UMP_UART_CHAR5BITS;
2343 dbg("%s - data bits = 5", __func__);
2344 break;
2345 case CS6:
2346 config->bDataBits = UMP_UART_CHAR6BITS;
2347 dbg("%s - data bits = 6", __func__);
2348 break;
2349 case CS7:
2350 config->bDataBits = UMP_UART_CHAR7BITS;
2351 dbg("%s - data bits = 7", __func__);
2352 break;
2353 default:
2354 case CS8:
2355 config->bDataBits = UMP_UART_CHAR8BITS;
2356 dbg("%s - data bits = 8", __func__);
2357 break;
2358 }
2359
2360 if (cflag & PARENB) {
2361 if (cflag & PARODD) {
2362 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2363 config->bParity = UMP_UART_ODDPARITY;
2364 dbg("%s - parity = odd", __func__);
2365 } else {
2366 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2367 config->bParity = UMP_UART_EVENPARITY;
2368 dbg("%s - parity = even", __func__);
2369 }
2370 } else {
2371 config->bParity = UMP_UART_NOPARITY;
2372 dbg("%s - parity = none", __func__);
2373 }
2374
2375 if (cflag & CSTOPB) {
2376 config->bStopBits = UMP_UART_STOPBIT2;
2377 dbg("%s - stop bits = 2", __func__);
2378 } else {
2379 config->bStopBits = UMP_UART_STOPBIT1;
2380 dbg("%s - stop bits = 1", __func__);
2381 }
2382
2383 /* figure out the flow control settings */
2384 if (cflag & CRTSCTS) {
2385 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2386 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2387 dbg("%s - RTS/CTS is enabled", __func__);
2388 } else {
2389 dbg("%s - RTS/CTS is disabled", __func__);
2390 tty->hw_stopped = 0;
2391 restart_read(edge_port);
2392 }
2393
2394 /* if we are implementing XON/XOFF, set the start and stop
2395 character in the device */
2396 config->cXon = START_CHAR(tty);
2397 config->cXoff = STOP_CHAR(tty);
2398
2399 /* if we are implementing INBOUND XON/XOFF */
2400 if (I_IXOFF(tty)) {
2401 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2402 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2403 __func__, config->cXon, config->cXoff);
2404 } else
2405 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2406
2407 /* if we are implementing OUTBOUND XON/XOFF */
2408 if (I_IXON(tty)) {
2409 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2410 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2411 __func__, config->cXon, config->cXoff);
2412 } else
2413 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2414
2415 tty->termios->c_cflag &= ~CMSPAR;
2416
2417 /* Round the baud rate */
2418 baud = tty_get_baud_rate(tty);
2419 if (!baud) {
2420 /* pick a default, any default... */
2421 baud = 9600;
2422 } else
2423 tty_encode_baud_rate(tty, baud, baud);
2424
2425 edge_port->baud_rate = baud;
2426 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2427
2428 /* FIXME: Recompute actual baud from divisor here */
2429
2430 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2431 config->wBaudRate);
2432
2433 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2434 dbg("wFlags: 0x%x", config->wFlags);
2435 dbg("bDataBits: %d", config->bDataBits);
2436 dbg("bParity: %d", config->bParity);
2437 dbg("bStopBits: %d", config->bStopBits);
2438 dbg("cXon: %d", config->cXon);
2439 dbg("cXoff: %d", config->cXoff);
2440 dbg("bUartMode: %d", config->bUartMode);
2441
2442 /* move the word values into big endian mode */
2443 cpu_to_be16s(&config->wFlags);
2444 cpu_to_be16s(&config->wBaudRate);
2445
2446 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2447 (__u8)(UMPM_UART1_PORT + port_number),
2448 0, (__u8 *)config, sizeof(*config));
2449 if (status)
2450 dbg("%s - error %d when trying to write config to device",
2451 __func__, status);
2452 kfree(config);
2453 return;
2454 }
2455
2456 static void edge_set_termios(struct tty_struct *tty,
2457 struct usb_serial_port *port, struct ktermios *old_termios)
2458 {
2459 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2460 unsigned int cflag;
2461
2462 cflag = tty->termios->c_cflag;
2463
2464 dbg("%s - clfag %08x iflag %08x", __func__,
2465 tty->termios->c_cflag, tty->termios->c_iflag);
2466 dbg("%s - old clfag %08x old iflag %08x", __func__,
2467 old_termios->c_cflag, old_termios->c_iflag);
2468 dbg("%s - port %d", __func__, port->number);
2469
2470 if (edge_port == NULL)
2471 return;
2472 /* change the port settings to the new ones specified */
2473 change_port_settings(tty, edge_port, old_termios);
2474 return;
2475 }
2476
2477 static int edge_tiocmset(struct tty_struct *tty, struct file *file,
2478 unsigned int set, unsigned int clear)
2479 {
2480 struct usb_serial_port *port = tty->driver_data;
2481 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2482 unsigned int mcr;
2483 unsigned long flags;
2484
2485 dbg("%s - port %d", __func__, port->number);
2486
2487 spin_lock_irqsave(&edge_port->ep_lock, flags);
2488 mcr = edge_port->shadow_mcr;
2489 if (set & TIOCM_RTS)
2490 mcr |= MCR_RTS;
2491 if (set & TIOCM_DTR)
2492 mcr |= MCR_DTR;
2493 if (set & TIOCM_LOOP)
2494 mcr |= MCR_LOOPBACK;
2495
2496 if (clear & TIOCM_RTS)
2497 mcr &= ~MCR_RTS;
2498 if (clear & TIOCM_DTR)
2499 mcr &= ~MCR_DTR;
2500 if (clear & TIOCM_LOOP)
2501 mcr &= ~MCR_LOOPBACK;
2502
2503 edge_port->shadow_mcr = mcr;
2504 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2505
2506 restore_mcr(edge_port, mcr);
2507 return 0;
2508 }
2509
2510 static int edge_tiocmget(struct tty_struct *tty, struct file *file)
2511 {
2512 struct usb_serial_port *port = tty->driver_data;
2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2514 unsigned int result = 0;
2515 unsigned int msr;
2516 unsigned int mcr;
2517 unsigned long flags;
2518
2519 dbg("%s - port %d", __func__, port->number);
2520
2521 spin_lock_irqsave(&edge_port->ep_lock, flags);
2522
2523 msr = edge_port->shadow_msr;
2524 mcr = edge_port->shadow_mcr;
2525 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2526 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2527 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2528 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2529 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2530 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2531
2532
2533 dbg("%s -- %x", __func__, result);
2534 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2535
2536 return result;
2537 }
2538
2539 static int get_serial_info(struct edgeport_port *edge_port,
2540 struct serial_struct __user *retinfo)
2541 {
2542 struct serial_struct tmp;
2543
2544 if (!retinfo)
2545 return -EFAULT;
2546
2547 memset(&tmp, 0, sizeof(tmp));
2548
2549 tmp.type = PORT_16550A;
2550 tmp.line = edge_port->port->serial->minor;
2551 tmp.port = edge_port->port->number;
2552 tmp.irq = 0;
2553 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2554 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2555 tmp.baud_base = 9600;
2556 tmp.close_delay = 5*HZ;
2557 tmp.closing_wait = closing_wait;
2558
2559 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2560 return -EFAULT;
2561 return 0;
2562 }
2563
2564 static int edge_ioctl(struct tty_struct *tty, struct file *file,
2565 unsigned int cmd, unsigned long arg)
2566 {
2567 struct usb_serial_port *port = tty->driver_data;
2568 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2569 struct async_icount cnow;
2570 struct async_icount cprev;
2571
2572 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2573
2574 switch (cmd) {
2575 case TIOCGSERIAL:
2576 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2577 return get_serial_info(edge_port,
2578 (struct serial_struct __user *) arg);
2579 case TIOCMIWAIT:
2580 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2581 cprev = edge_port->icount;
2582 while (1) {
2583 interruptible_sleep_on(&edge_port->delta_msr_wait);
2584 /* see if a signal did it */
2585 if (signal_pending(current))
2586 return -ERESTARTSYS;
2587 cnow = edge_port->icount;
2588 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2589 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2590 return -EIO; /* no change => error */
2591 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2592 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2593 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2594 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2595 return 0;
2596 }
2597 cprev = cnow;
2598 }
2599 /* not reached */
2600 break;
2601 case TIOCGICOUNT:
2602 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__,
2603 port->number, edge_port->icount.rx, edge_port->icount.tx);
2604 if (copy_to_user((void __user *)arg, &edge_port->icount,
2605 sizeof(edge_port->icount)))
2606 return -EFAULT;
2607 return 0;
2608 }
2609 return -ENOIOCTLCMD;
2610 }
2611
2612 static void edge_break(struct tty_struct *tty, int break_state)
2613 {
2614 struct usb_serial_port *port = tty->driver_data;
2615 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2616 int status;
2617 int bv = 0; /* Off */
2618
2619 dbg("%s - state = %d", __func__, break_state);
2620
2621 /* chase the port close */
2622 chase_port(edge_port, 0, 0);
2623
2624 if (break_state == -1)
2625 bv = 1; /* On */
2626 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2627 if (status)
2628 dbg("%s - error %d sending break set/clear command.",
2629 __func__, status);
2630 }
2631
2632 static int edge_startup(struct usb_serial *serial)
2633 {
2634 struct edgeport_serial *edge_serial;
2635 struct edgeport_port *edge_port;
2636 struct usb_device *dev;
2637 int status;
2638 int i;
2639
2640 dev = serial->dev;
2641
2642 /* create our private serial structure */
2643 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2644 if (edge_serial == NULL) {
2645 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2646 return -ENOMEM;
2647 }
2648 mutex_init(&edge_serial->es_lock);
2649 edge_serial->serial = serial;
2650 usb_set_serial_data(serial, edge_serial);
2651
2652 status = download_fw(edge_serial);
2653 if (status) {
2654 kfree(edge_serial);
2655 return status;
2656 }
2657
2658 /* set up our port private structures */
2659 for (i = 0; i < serial->num_ports; ++i) {
2660 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2661 if (edge_port == NULL) {
2662 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2663 __func__);
2664 goto cleanup;
2665 }
2666 spin_lock_init(&edge_port->ep_lock);
2667 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2668 if (edge_port->ep_out_buf == NULL) {
2669 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2670 __func__);
2671 kfree(edge_port);
2672 goto cleanup;
2673 }
2674 edge_port->port = serial->port[i];
2675 edge_port->edge_serial = edge_serial;
2676 usb_set_serial_port_data(serial->port[i], edge_port);
2677 edge_port->bUartMode = default_uart_mode;
2678 }
2679
2680 return 0;
2681
2682 cleanup:
2683 for (--i; i >= 0; --i) {
2684 edge_port = usb_get_serial_port_data(serial->port[i]);
2685 edge_buf_free(edge_port->ep_out_buf);
2686 kfree(edge_port);
2687 usb_set_serial_port_data(serial->port[i], NULL);
2688 }
2689 kfree(edge_serial);
2690 usb_set_serial_data(serial, NULL);
2691 return -ENOMEM;
2692 }
2693
2694 static void edge_disconnect(struct usb_serial *serial)
2695 {
2696 int i;
2697 struct edgeport_port *edge_port;
2698
2699 dbg("%s", __func__);
2700
2701 for (i = 0; i < serial->num_ports; ++i) {
2702 edge_port = usb_get_serial_port_data(serial->port[i]);
2703 edge_remove_sysfs_attrs(edge_port->port);
2704 }
2705 }
2706
2707 static void edge_release(struct usb_serial *serial)
2708 {
2709 int i;
2710 struct edgeport_port *edge_port;
2711
2712 dbg("%s", __func__);
2713
2714 for (i = 0; i < serial->num_ports; ++i) {
2715 edge_port = usb_get_serial_port_data(serial->port[i]);
2716 edge_buf_free(edge_port->ep_out_buf);
2717 kfree(edge_port);
2718 }
2719 kfree(usb_get_serial_data(serial));
2720 }
2721
2722
2723 /* Sysfs Attributes */
2724
2725 static ssize_t show_uart_mode(struct device *dev,
2726 struct device_attribute *attr, char *buf)
2727 {
2728 struct usb_serial_port *port = to_usb_serial_port(dev);
2729 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2730
2731 return sprintf(buf, "%d\n", edge_port->bUartMode);
2732 }
2733
2734 static ssize_t store_uart_mode(struct device *dev,
2735 struct device_attribute *attr, const char *valbuf, size_t count)
2736 {
2737 struct usb_serial_port *port = to_usb_serial_port(dev);
2738 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2739 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2740
2741 dbg("%s: setting uart_mode = %d", __func__, v);
2742
2743 if (v < 256)
2744 edge_port->bUartMode = v;
2745 else
2746 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2747
2748 return count;
2749 }
2750
2751 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2752 store_uart_mode);
2753
2754 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2755 {
2756 return device_create_file(&port->dev, &dev_attr_uart_mode);
2757 }
2758
2759 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2760 {
2761 device_remove_file(&port->dev, &dev_attr_uart_mode);
2762 return 0;
2763 }
2764
2765
2766 /* Circular Buffer */
2767
2768 /*
2769 * edge_buf_alloc
2770 *
2771 * Allocate a circular buffer and all associated memory.
2772 */
2773
2774 static struct edge_buf *edge_buf_alloc(unsigned int size)
2775 {
2776 struct edge_buf *eb;
2777
2778
2779 if (size == 0)
2780 return NULL;
2781
2782 eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2783 if (eb == NULL)
2784 return NULL;
2785
2786 eb->buf_buf = kmalloc(size, GFP_KERNEL);
2787 if (eb->buf_buf == NULL) {
2788 kfree(eb);
2789 return NULL;
2790 }
2791
2792 eb->buf_size = size;
2793 eb->buf_get = eb->buf_put = eb->buf_buf;
2794
2795 return eb;
2796 }
2797
2798
2799 /*
2800 * edge_buf_free
2801 *
2802 * Free the buffer and all associated memory.
2803 */
2804
2805 static void edge_buf_free(struct edge_buf *eb)
2806 {
2807 if (eb) {
2808 kfree(eb->buf_buf);
2809 kfree(eb);
2810 }
2811 }
2812
2813
2814 /*
2815 * edge_buf_clear
2816 *
2817 * Clear out all data in the circular buffer.
2818 */
2819
2820 static void edge_buf_clear(struct edge_buf *eb)
2821 {
2822 if (eb != NULL)
2823 eb->buf_get = eb->buf_put;
2824 /* equivalent to a get of all data available */
2825 }
2826
2827
2828 /*
2829 * edge_buf_data_avail
2830 *
2831 * Return the number of bytes of data available in the circular
2832 * buffer.
2833 */
2834
2835 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2836 {
2837 if (eb == NULL)
2838 return 0;
2839 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2840 }
2841
2842
2843 /*
2844 * edge_buf_space_avail
2845 *
2846 * Return the number of bytes of space available in the circular
2847 * buffer.
2848 */
2849
2850 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2851 {
2852 if (eb == NULL)
2853 return 0;
2854 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2855 }
2856
2857
2858 /*
2859 * edge_buf_put
2860 *
2861 * Copy data data from a user buffer and put it into the circular buffer.
2862 * Restrict to the amount of space available.
2863 *
2864 * Return the number of bytes copied.
2865 */
2866
2867 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2868 unsigned int count)
2869 {
2870 unsigned int len;
2871
2872
2873 if (eb == NULL)
2874 return 0;
2875
2876 len = edge_buf_space_avail(eb);
2877 if (count > len)
2878 count = len;
2879
2880 if (count == 0)
2881 return 0;
2882
2883 len = eb->buf_buf + eb->buf_size - eb->buf_put;
2884 if (count > len) {
2885 memcpy(eb->buf_put, buf, len);
2886 memcpy(eb->buf_buf, buf+len, count - len);
2887 eb->buf_put = eb->buf_buf + count - len;
2888 } else {
2889 memcpy(eb->buf_put, buf, count);
2890 if (count < len)
2891 eb->buf_put += count;
2892 else /* count == len */
2893 eb->buf_put = eb->buf_buf;
2894 }
2895
2896 return count;
2897 }
2898
2899
2900 /*
2901 * edge_buf_get
2902 *
2903 * Get data from the circular buffer and copy to the given buffer.
2904 * Restrict to the amount of data available.
2905 *
2906 * Return the number of bytes copied.
2907 */
2908
2909 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2910 unsigned int count)
2911 {
2912 unsigned int len;
2913
2914
2915 if (eb == NULL)
2916 return 0;
2917
2918 len = edge_buf_data_avail(eb);
2919 if (count > len)
2920 count = len;
2921
2922 if (count == 0)
2923 return 0;
2924
2925 len = eb->buf_buf + eb->buf_size - eb->buf_get;
2926 if (count > len) {
2927 memcpy(buf, eb->buf_get, len);
2928 memcpy(buf+len, eb->buf_buf, count - len);
2929 eb->buf_get = eb->buf_buf + count - len;
2930 } else {
2931 memcpy(buf, eb->buf_get, count);
2932 if (count < len)
2933 eb->buf_get += count;
2934 else /* count == len */
2935 eb->buf_get = eb->buf_buf;
2936 }
2937
2938 return count;
2939 }
2940
2941
2942 static struct usb_serial_driver edgeport_1port_device = {
2943 .driver = {
2944 .owner = THIS_MODULE,
2945 .name = "edgeport_ti_1",
2946 },
2947 .description = "Edgeport TI 1 port adapter",
2948 .usb_driver = &io_driver,
2949 .id_table = edgeport_1port_id_table,
2950 .num_ports = 1,
2951 .open = edge_open,
2952 .close = edge_close,
2953 .throttle = edge_throttle,
2954 .unthrottle = edge_unthrottle,
2955 .attach = edge_startup,
2956 .disconnect = edge_disconnect,
2957 .release = edge_release,
2958 .port_probe = edge_create_sysfs_attrs,
2959 .ioctl = edge_ioctl,
2960 .set_termios = edge_set_termios,
2961 .tiocmget = edge_tiocmget,
2962 .tiocmset = edge_tiocmset,
2963 .write = edge_write,
2964 .write_room = edge_write_room,
2965 .chars_in_buffer = edge_chars_in_buffer,
2966 .break_ctl = edge_break,
2967 .read_int_callback = edge_interrupt_callback,
2968 .read_bulk_callback = edge_bulk_in_callback,
2969 .write_bulk_callback = edge_bulk_out_callback,
2970 };
2971
2972 static struct usb_serial_driver edgeport_2port_device = {
2973 .driver = {
2974 .owner = THIS_MODULE,
2975 .name = "edgeport_ti_2",
2976 },
2977 .description = "Edgeport TI 2 port adapter",
2978 .usb_driver = &io_driver,
2979 .id_table = edgeport_2port_id_table,
2980 .num_ports = 2,
2981 .open = edge_open,
2982 .close = edge_close,
2983 .throttle = edge_throttle,
2984 .unthrottle = edge_unthrottle,
2985 .attach = edge_startup,
2986 .disconnect = edge_disconnect,
2987 .release = edge_release,
2988 .port_probe = edge_create_sysfs_attrs,
2989 .ioctl = edge_ioctl,
2990 .set_termios = edge_set_termios,
2991 .tiocmget = edge_tiocmget,
2992 .tiocmset = edge_tiocmset,
2993 .write = edge_write,
2994 .write_room = edge_write_room,
2995 .chars_in_buffer = edge_chars_in_buffer,
2996 .break_ctl = edge_break,
2997 .read_int_callback = edge_interrupt_callback,
2998 .read_bulk_callback = edge_bulk_in_callback,
2999 .write_bulk_callback = edge_bulk_out_callback,
3000 };
3001
3002
3003 static int __init edgeport_init(void)
3004 {
3005 int retval;
3006 retval = usb_serial_register(&edgeport_1port_device);
3007 if (retval)
3008 goto failed_1port_device_register;
3009 retval = usb_serial_register(&edgeport_2port_device);
3010 if (retval)
3011 goto failed_2port_device_register;
3012 retval = usb_register(&io_driver);
3013 if (retval)
3014 goto failed_usb_register;
3015 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
3016 DRIVER_DESC "\n");
3017 return 0;
3018 failed_usb_register:
3019 usb_serial_deregister(&edgeport_2port_device);
3020 failed_2port_device_register:
3021 usb_serial_deregister(&edgeport_1port_device);
3022 failed_1port_device_register:
3023 return retval;
3024 }
3025
3026 static void __exit edgeport_exit(void)
3027 {
3028 usb_deregister(&io_driver);
3029 usb_serial_deregister(&edgeport_1port_device);
3030 usb_serial_deregister(&edgeport_2port_device);
3031 }
3032
3033 module_init(edgeport_init);
3034 module_exit(edgeport_exit);
3035
3036 /* Module information */
3037 MODULE_AUTHOR(DRIVER_AUTHOR);
3038 MODULE_DESCRIPTION(DRIVER_DESC);
3039 MODULE_LICENSE("GPL");
3040 MODULE_FIRMWARE("edgeport/down3.bin");
3041
3042 module_param(debug, bool, S_IRUGO | S_IWUSR);
3043 MODULE_PARM_DESC(debug, "Debug enabled or not");
3044
3045 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3046 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3047
3048 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3049 MODULE_PARM_DESC(ignore_cpu_rev,
3050 "Ignore the cpu revision when connecting to a device");
3051
3052 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
3053 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux with added FPC-III support