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Merge git://www.linux-watchdog.org/linux-watchdog
[linux/fpc-iii.git] / drivers / usb / serial / io_ti.c
blob60054e72b75ba1fc015a7d6fb778b02f104aae9d
1 /*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14 *
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/jiffies.h>
22 #include <linux/errno.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/tty.h>
26 #include <linux/tty_driver.h>
27 #include <linux/tty_flip.h>
28 #include <linux/module.h>
29 #include <linux/spinlock.h>
30 #include <linux/mutex.h>
31 #include <linux/serial.h>
32 #include <linux/kfifo.h>
33 #include <linux/ioctl.h>
34 #include <linux/firmware.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
38
39 #include "io_16654.h"
40 #include "io_usbvend.h"
41 #include "io_ti.h"
42
43 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
44 #define DRIVER_DESC "Edgeport USB Serial Driver"
45
46 #define EPROM_PAGE_SIZE 64
47
48
49 /* different hardware types */
50 #define HARDWARE_TYPE_930 0
51 #define HARDWARE_TYPE_TIUMP 1
52
53 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
54 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
55 #define TI_MODE_BOOT 1 /* Staying in boot mode */
56 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
57 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
58 transitioning to download mode */
59
60 /* read urb state */
61 #define EDGE_READ_URB_RUNNING 0
62 #define EDGE_READ_URB_STOPPING 1
63 #define EDGE_READ_URB_STOPPED 2
64
65 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
66
67 #define EDGE_OUT_BUF_SIZE 1024
68
69
70 /* Product information read from the Edgeport */
71 struct product_info {
72 int TiMode; /* Current TI Mode */
73 __u8 hardware_type; /* Type of hardware */
74 } __attribute__((packed));
75
76 struct edgeport_port {
77 __u16 uart_base;
78 __u16 dma_address;
79 __u8 shadow_msr;
80 __u8 shadow_mcr;
81 __u8 shadow_lsr;
82 __u8 lsr_mask;
83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
84 wait without data before completing
85 a read short */
86 int baud_rate;
87 int close_pending;
88 int lsr_event;
89
90 struct edgeport_serial *edge_serial;
91 struct usb_serial_port *port;
92 __u8 bUartMode; /* Port type, 0: RS232, etc. */
93 spinlock_t ep_lock;
94 int ep_read_urb_state;
95 int ep_write_urb_in_use;
96 struct kfifo write_fifo;
97 };
98
99 struct edgeport_serial {
100 struct product_info product_info;
101 u8 TI_I2C_Type; /* Type of I2C in UMP */
102 u8 TiReadI2C; /* Set to TRUE if we have read the
103 I2c in Boot Mode */
104 struct mutex es_lock;
105 int num_ports_open;
106 struct usb_serial *serial;
107 };
108
109
110 /* Devices that this driver supports */
111 static const struct usb_device_id edgeport_1port_id_table[] = {
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
128 { }
129 };
130
131 static const struct usb_device_id edgeport_2port_id_table[] = {
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
144 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
150 { }
151 };
152
153 /* Devices that this driver supports */
154 static const struct usb_device_id id_table_combined[] = {
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
188 { }
189 };
190
191 MODULE_DEVICE_TABLE(usb, id_table_combined);
192
193 static unsigned char OperationalMajorVersion;
194 static unsigned char OperationalMinorVersion;
195 static unsigned short OperationalBuildNumber;
196
197 static int closing_wait = EDGE_CLOSING_WAIT;
198 static bool ignore_cpu_rev;
199 static int default_uart_mode; /* RS232 */
200
201 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
202 int length);
203
204 static void stop_read(struct edgeport_port *edge_port);
205 static int restart_read(struct edgeport_port *edge_port);
206
207 static void edge_set_termios(struct tty_struct *tty,
208 struct usb_serial_port *port, struct ktermios *old_termios);
209 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
210
211 /* sysfs attributes */
212 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
213 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
214
215
216 static int ti_vread_sync(struct usb_device *dev, __u8 request,
217 __u16 value, __u16 index, u8 *data, int size)
218 {
219 int status;
220
221 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
222 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
223 value, index, data, size, 1000);
224 if (status < 0)
225 return status;
226 if (status != size) {
227 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
228 __func__, size, status);
229 return -ECOMM;
230 }
231 return 0;
232 }
233
234 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
235 __u16 value, __u16 index, u8 *data, int size)
236 {
237 int status;
238
239 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
240 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
241 value, index, data, size, 1000);
242 if (status < 0)
243 return status;
244 if (status != size) {
245 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
246 __func__, size, status);
247 return -ECOMM;
248 }
249 return 0;
250 }
251
252 static int send_cmd(struct usb_device *dev, __u8 command,
253 __u8 moduleid, __u16 value, u8 *data,
254 int size)
255 {
256 return ti_vsend_sync(dev, command, value, moduleid, data, size);
257 }
258
259 /* clear tx/rx buffers and fifo in TI UMP */
260 static int purge_port(struct usb_serial_port *port, __u16 mask)
261 {
262 int port_number = port->port_number;
263
264 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
265
266 return send_cmd(port->serial->dev,
267 UMPC_PURGE_PORT,
268 (__u8)(UMPM_UART1_PORT + port_number),
269 mask,
270 NULL,
271 0);
272 }
273
274 /**
275 * read_download_mem - Read edgeport memory from TI chip
276 * @dev: usb device pointer
277 * @start_address: Device CPU address at which to read
278 * @length: Length of above data
279 * @address_type: Can read both XDATA and I2C
280 * @buffer: pointer to input data buffer
281 */
282 static int read_download_mem(struct usb_device *dev, int start_address,
283 int length, __u8 address_type, __u8 *buffer)
284 {
285 int status = 0;
286 __u8 read_length;
287 __be16 be_start_address;
288
289 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
290
291 /* Read in blocks of 64 bytes
292 * (TI firmware can't handle more than 64 byte reads)
293 */
294 while (length) {
295 if (length > 64)
296 read_length = 64;
297 else
298 read_length = (__u8)length;
299
300 if (read_length > 1) {
301 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
302 }
303 be_start_address = cpu_to_be16(start_address);
304 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
305 (__u16)address_type,
306 (__force __u16)be_start_address,
307 buffer, read_length);
308
309 if (status) {
310 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
311 return status;
312 }
313
314 if (read_length > 1)
315 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
316
317 /* Update pointers/length */
318 start_address += read_length;
319 buffer += read_length;
320 length -= read_length;
321 }
322
323 return status;
324 }
325
326 static int read_ram(struct usb_device *dev, int start_address,
327 int length, __u8 *buffer)
328 {
329 return read_download_mem(dev, start_address, length,
330 DTK_ADDR_SPACE_XDATA, buffer);
331 }
332
333 /* Read edgeport memory to a given block */
334 static int read_boot_mem(struct edgeport_serial *serial,
335 int start_address, int length, __u8 *buffer)
336 {
337 int status = 0;
338 int i;
339
340 for (i = 0; i < length; i++) {
341 status = ti_vread_sync(serial->serial->dev,
342 UMPC_MEMORY_READ, serial->TI_I2C_Type,
343 (__u16)(start_address+i), &buffer[i], 0x01);
344 if (status) {
345 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
346 return status;
347 }
348 }
349
350 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
351 __func__, start_address, length);
352 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
353
354 serial->TiReadI2C = 1;
355
356 return status;
357 }
358
359 /* Write given block to TI EPROM memory */
360 static int write_boot_mem(struct edgeport_serial *serial,
361 int start_address, int length, __u8 *buffer)
362 {
363 int status = 0;
364 int i;
365 u8 *temp;
366
367 /* Must do a read before write */
368 if (!serial->TiReadI2C) {
369 temp = kmalloc(1, GFP_KERNEL);
370 if (!temp) {
371 dev_err(&serial->serial->dev->dev,
372 "%s - out of memory\n", __func__);
373 return -ENOMEM;
374 }
375 status = read_boot_mem(serial, 0, 1, temp);
376 kfree(temp);
377 if (status)
378 return status;
379 }
380
381 for (i = 0; i < length; ++i) {
382 status = ti_vsend_sync(serial->serial->dev,
383 UMPC_MEMORY_WRITE, buffer[i],
384 (__u16)(i + start_address), NULL, 0);
385 if (status)
386 return status;
387 }
388
389 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
390 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
391
392 return status;
393 }
394
395
396 /* Write edgeport I2C memory to TI chip */
397 static int write_i2c_mem(struct edgeport_serial *serial,
398 int start_address, int length, __u8 address_type, __u8 *buffer)
399 {
400 struct device *dev = &serial->serial->dev->dev;
401 int status = 0;
402 int write_length;
403 __be16 be_start_address;
404
405 /* We can only send a maximum of 1 aligned byte page at a time */
406
407 /* calculate the number of bytes left in the first page */
408 write_length = EPROM_PAGE_SIZE -
409 (start_address & (EPROM_PAGE_SIZE - 1));
410
411 if (write_length > length)
412 write_length = length;
413
414 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
415 __func__, start_address, write_length);
416 usb_serial_debug_data(dev, __func__, write_length, buffer);
417
418 /* Write first page */
419 be_start_address = cpu_to_be16(start_address);
420 status = ti_vsend_sync(serial->serial->dev,
421 UMPC_MEMORY_WRITE, (__u16)address_type,
422 (__force __u16)be_start_address,
423 buffer, write_length);
424 if (status) {
425 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
426 return status;
427 }
428
429 length -= write_length;
430 start_address += write_length;
431 buffer += write_length;
432
433 /* We should be aligned now -- can write
434 max page size bytes at a time */
435 while (length) {
436 if (length > EPROM_PAGE_SIZE)
437 write_length = EPROM_PAGE_SIZE;
438 else
439 write_length = length;
440
441 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
442 __func__, start_address, write_length);
443 usb_serial_debug_data(dev, __func__, write_length, buffer);
444
445 /* Write next page */
446 be_start_address = cpu_to_be16(start_address);
447 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
448 (__u16)address_type,
449 (__force __u16)be_start_address,
450 buffer, write_length);
451 if (status) {
452 dev_err(dev, "%s - ERROR %d\n", __func__, status);
453 return status;
454 }
455
456 length -= write_length;
457 start_address += write_length;
458 buffer += write_length;
459 }
460 return status;
461 }
462
463 /* Examine the UMP DMA registers and LSR
464 *
465 * Check the MSBit of the X and Y DMA byte count registers.
466 * A zero in this bit indicates that the TX DMA buffers are empty
467 * then check the TX Empty bit in the UART.
468 */
469 static int tx_active(struct edgeport_port *port)
470 {
471 int status;
472 struct out_endpoint_desc_block *oedb;
473 __u8 *lsr;
474 int bytes_left = 0;
475
476 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
477 if (!oedb) {
478 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
479 return -ENOMEM;
480 }
481
482 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
483 as not all platforms can do DMA
484 from stack */
485 if (!lsr) {
486 kfree(oedb);
487 return -ENOMEM;
488 }
489 /* Read the DMA Count Registers */
490 status = read_ram(port->port->serial->dev, port->dma_address,
491 sizeof(*oedb), (void *)oedb);
492 if (status)
493 goto exit_is_tx_active;
494
495 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
496
497 /* and the LSR */
498 status = read_ram(port->port->serial->dev,
499 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
500
501 if (status)
502 goto exit_is_tx_active;
503 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
504
505 /* If either buffer has data or we are transmitting then return TRUE */
506 if ((oedb->XByteCount & 0x80) != 0)
507 bytes_left += 64;
508
509 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
510 bytes_left += 1;
511
512 /* We return Not Active if we get any kind of error */
513 exit_is_tx_active:
514 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
515
516 kfree(lsr);
517 kfree(oedb);
518 return bytes_left;
519 }
520
521 static int choose_config(struct usb_device *dev)
522 {
523 /*
524 * There may be multiple configurations on this device, in which case
525 * we would need to read and parse all of them to find out which one
526 * we want. However, we just support one config at this point,
527 * configuration # 1, which is Config Descriptor 0.
528 */
529
530 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
531 __func__, dev->config->desc.bNumInterfaces);
532 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
533 __func__, dev->config->desc.bMaxPower * 2);
534
535 if (dev->config->desc.bNumInterfaces != 1) {
536 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
537 return -ENODEV;
538 }
539
540 return 0;
541 }
542
543 static int read_rom(struct edgeport_serial *serial,
544 int start_address, int length, __u8 *buffer)
545 {
546 int status;
547
548 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
549 status = read_download_mem(serial->serial->dev,
550 start_address,
551 length,
552 serial->TI_I2C_Type,
553 buffer);
554 } else {
555 status = read_boot_mem(serial, start_address, length,
556 buffer);
557 }
558 return status;
559 }
560
561 static int write_rom(struct edgeport_serial *serial, int start_address,
562 int length, __u8 *buffer)
563 {
564 if (serial->product_info.TiMode == TI_MODE_BOOT)
565 return write_boot_mem(serial, start_address, length,
566 buffer);
567
568 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
569 return write_i2c_mem(serial, start_address, length,
570 serial->TI_I2C_Type, buffer);
571 return -EINVAL;
572 }
573
574
575
576 /* Read a descriptor header from I2C based on type */
577 static int get_descriptor_addr(struct edgeport_serial *serial,
578 int desc_type, struct ti_i2c_desc *rom_desc)
579 {
580 int start_address;
581 int status;
582
583 /* Search for requested descriptor in I2C */
584 start_address = 2;
585 do {
586 status = read_rom(serial,
587 start_address,
588 sizeof(struct ti_i2c_desc),
589 (__u8 *)rom_desc);
590 if (status)
591 return 0;
592
593 if (rom_desc->Type == desc_type)
594 return start_address;
595
596 start_address = start_address + sizeof(struct ti_i2c_desc)
597 + rom_desc->Size;
598
599 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
600
601 return 0;
602 }
603
604 /* Validate descriptor checksum */
605 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
606 {
607 __u16 i;
608 __u8 cs = 0;
609
610 for (i = 0; i < rom_desc->Size; i++)
611 cs = (__u8)(cs + buffer[i]);
612
613 if (cs != rom_desc->CheckSum) {
614 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
615 return -EINVAL;
616 }
617 return 0;
618 }
619
620 /* Make sure that the I2C image is good */
621 static int check_i2c_image(struct edgeport_serial *serial)
622 {
623 struct device *dev = &serial->serial->dev->dev;
624 int status = 0;
625 struct ti_i2c_desc *rom_desc;
626 int start_address = 2;
627 __u8 *buffer;
628 __u16 ttype;
629
630 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
631 if (!rom_desc) {
632 dev_err(dev, "%s - out of memory\n", __func__);
633 return -ENOMEM;
634 }
635 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
636 if (!buffer) {
637 dev_err(dev, "%s - out of memory when allocating buffer\n",
638 __func__);
639 kfree(rom_desc);
640 return -ENOMEM;
641 }
642
643 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
644 status = read_rom(serial, 0, 1, buffer);
645 if (status)
646 goto out;
647
648 if (*buffer != UMP5152 && *buffer != UMP3410) {
649 dev_err(dev, "%s - invalid buffer signature\n", __func__);
650 status = -ENODEV;
651 goto out;
652 }
653
654 do {
655 /* Validate the I2C */
656 status = read_rom(serial,
657 start_address,
658 sizeof(struct ti_i2c_desc),
659 (__u8 *)rom_desc);
660 if (status)
661 break;
662
663 if ((start_address + sizeof(struct ti_i2c_desc) +
664 rom_desc->Size) > TI_MAX_I2C_SIZE) {
665 status = -ENODEV;
666 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
667 break;
668 }
669
670 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
671
672 /* Skip type 2 record */
673 ttype = rom_desc->Type & 0x0f;
674 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
675 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
676 /* Read the descriptor data */
677 status = read_rom(serial, start_address +
678 sizeof(struct ti_i2c_desc),
679 rom_desc->Size, buffer);
680 if (status)
681 break;
682
683 status = valid_csum(rom_desc, buffer);
684 if (status)
685 break;
686 }
687 start_address = start_address + sizeof(struct ti_i2c_desc) +
688 rom_desc->Size;
689
690 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
691 (start_address < TI_MAX_I2C_SIZE));
692
693 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
694 (start_address > TI_MAX_I2C_SIZE))
695 status = -ENODEV;
696
697 out:
698 kfree(buffer);
699 kfree(rom_desc);
700 return status;
701 }
702
703 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
704 {
705 int status;
706 int start_address;
707 struct ti_i2c_desc *rom_desc;
708 struct edge_ti_manuf_descriptor *desc;
709 struct device *dev = &serial->serial->dev->dev;
710
711 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
712 if (!rom_desc) {
713 dev_err(dev, "%s - out of memory\n", __func__);
714 return -ENOMEM;
715 }
716 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
717 rom_desc);
718
719 if (!start_address) {
720 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
721 status = -ENODEV;
722 goto exit;
723 }
724
725 /* Read the descriptor data */
726 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
727 rom_desc->Size, buffer);
728 if (status)
729 goto exit;
730
731 status = valid_csum(rom_desc, buffer);
732
733 desc = (struct edge_ti_manuf_descriptor *)buffer;
734 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
735 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
736 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
737 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
738 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
739 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
740
741 exit:
742 kfree(rom_desc);
743 return status;
744 }
745
746 /* Build firmware header used for firmware update */
747 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
748 {
749 __u8 *buffer;
750 int buffer_size;
751 int i;
752 int err;
753 __u8 cs = 0;
754 struct ti_i2c_desc *i2c_header;
755 struct ti_i2c_image_header *img_header;
756 struct ti_i2c_firmware_rec *firmware_rec;
757 const struct firmware *fw;
758 const char *fw_name = "edgeport/down3.bin";
759
760 /* In order to update the I2C firmware we must change the type 2 record
761 * to type 0xF2. This will force the UMP to come up in Boot Mode.
762 * Then while in boot mode, the driver will download the latest
763 * firmware (padded to 15.5k) into the UMP ram. And finally when the
764 * device comes back up in download mode the driver will cause the new
765 * firmware to be copied from the UMP Ram to I2C and the firmware will
766 * update the record type from 0xf2 to 0x02.
767 */
768
769 /* Allocate a 15.5k buffer + 2 bytes for version number
770 * (Firmware Record) */
771 buffer_size = (((1024 * 16) - 512 ) +
772 sizeof(struct ti_i2c_firmware_rec));
773
774 buffer = kmalloc(buffer_size, GFP_KERNEL);
775 if (!buffer) {
776 dev_err(dev, "%s - out of memory\n", __func__);
777 return -ENOMEM;
778 }
779
780 // Set entire image of 0xffs
781 memset(buffer, 0xff, buffer_size);
782
783 err = request_firmware(&fw, fw_name, dev);
784 if (err) {
785 dev_err(dev, "Failed to load image \"%s\" err %d\n",
786 fw_name, err);
787 kfree(buffer);
788 return err;
789 }
790
791 /* Save Download Version Number */
792 OperationalMajorVersion = fw->data[0];
793 OperationalMinorVersion = fw->data[1];
794 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
795
796 /* Copy version number into firmware record */
797 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
798
799 firmware_rec->Ver_Major = OperationalMajorVersion;
800 firmware_rec->Ver_Minor = OperationalMinorVersion;
801
802 /* Pointer to fw_down memory image */
803 img_header = (struct ti_i2c_image_header *)&fw->data[4];
804
805 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
806 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
807 le16_to_cpu(img_header->Length));
808
809 release_firmware(fw);
810
811 for (i=0; i < buffer_size; i++) {
812 cs = (__u8)(cs + buffer[i]);
813 }
814
815 kfree(buffer);
816
817 /* Build new header */
818 i2c_header = (struct ti_i2c_desc *)header;
819 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
820
821 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
822 i2c_header->Size = (__u16)buffer_size;
823 i2c_header->CheckSum = cs;
824 firmware_rec->Ver_Major = OperationalMajorVersion;
825 firmware_rec->Ver_Minor = OperationalMinorVersion;
826
827 return 0;
828 }
829
830 /* Try to figure out what type of I2c we have */
831 static int i2c_type_bootmode(struct edgeport_serial *serial)
832 {
833 struct device *dev = &serial->serial->dev->dev;
834 int status;
835 u8 *data;
836
837 data = kmalloc(1, GFP_KERNEL);
838 if (!data) {
839 dev_err(dev, "%s - out of memory\n", __func__);
840 return -ENOMEM;
841 }
842
843 /* Try to read type 2 */
844 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
845 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
846 if (status)
847 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
848 else
849 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
850 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
851 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
852 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
853 goto out;
854 }
855
856 /* Try to read type 3 */
857 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
858 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
859 if (status)
860 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
861 else
862 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
863 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
864 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
865 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
866 goto out;
867 }
868
869 dev_dbg(dev, "%s - Unknown\n", __func__);
870 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
871 status = -ENODEV;
872 out:
873 kfree(data);
874 return status;
875 }
876
877 static int bulk_xfer(struct usb_serial *serial, void *buffer,
878 int length, int *num_sent)
879 {
880 int status;
881
882 status = usb_bulk_msg(serial->dev,
883 usb_sndbulkpipe(serial->dev,
884 serial->port[0]->bulk_out_endpointAddress),
885 buffer, length, num_sent, 1000);
886 return status;
887 }
888
889 /* Download given firmware image to the device (IN BOOT MODE) */
890 static int download_code(struct edgeport_serial *serial, __u8 *image,
891 int image_length)
892 {
893 int status = 0;
894 int pos;
895 int transfer;
896 int done;
897
898 /* Transfer firmware image */
899 for (pos = 0; pos < image_length; ) {
900 /* Read the next buffer from file */
901 transfer = image_length - pos;
902 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
903 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
904
905 /* Transfer data */
906 status = bulk_xfer(serial->serial, &image[pos],
907 transfer, &done);
908 if (status)
909 break;
910 /* Advance buffer pointer */
911 pos += done;
912 }
913
914 return status;
915 }
916
917 /* FIXME!!! */
918 static int config_boot_dev(struct usb_device *dev)
919 {
920 return 0;
921 }
922
923 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
924 {
925 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
926 }
927
928 /**
929 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
930 *
931 * This routine downloads the main operating code into the TI5052, using the
932 * boot code already burned into E2PROM or ROM.
933 */
934 static int download_fw(struct edgeport_serial *serial)
935 {
936 struct device *dev = &serial->serial->dev->dev;
937 int status = 0;
938 int start_address;
939 struct edge_ti_manuf_descriptor *ti_manuf_desc;
940 struct usb_interface_descriptor *interface;
941 int download_cur_ver;
942 int download_new_ver;
943
944 /* This routine is entered by both the BOOT mode and the Download mode
945 * We can determine which code is running by the reading the config
946 * descriptor and if we have only one bulk pipe it is in boot mode
947 */
948 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
949
950 /* Default to type 2 i2c */
951 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
952
953 status = choose_config(serial->serial->dev);
954 if (status)
955 return status;
956
957 interface = &serial->serial->interface->cur_altsetting->desc;
958 if (!interface) {
959 dev_err(dev, "%s - no interface set, error!\n", __func__);
960 return -ENODEV;
961 }
962
963 /*
964 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
965 * if we have more than one endpoint we are definitely in download
966 * mode
967 */
968 if (interface->bNumEndpoints > 1)
969 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
970 else
971 /* Otherwise we will remain in configuring mode */
972 serial->product_info.TiMode = TI_MODE_CONFIGURING;
973
974 /********************************************************************/
975 /* Download Mode */
976 /********************************************************************/
977 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
978 struct ti_i2c_desc *rom_desc;
979
980 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
981
982 status = check_i2c_image(serial);
983 if (status) {
984 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
985 return status;
986 }
987
988 /* Validate Hardware version number
989 * Read Manufacturing Descriptor from TI Based Edgeport
990 */
991 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
992 if (!ti_manuf_desc) {
993 dev_err(dev, "%s - out of memory.\n", __func__);
994 return -ENOMEM;
995 }
996 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
997 if (status) {
998 kfree(ti_manuf_desc);
999 return status;
1000 }
1001
1002 /* Check version number of ION descriptor */
1003 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1004 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1005 __func__, ti_cpu_rev(ti_manuf_desc));
1006 kfree(ti_manuf_desc);
1007 return -EINVAL;
1008 }
1009
1010 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1011 if (!rom_desc) {
1012 dev_err(dev, "%s - out of memory.\n", __func__);
1013 kfree(ti_manuf_desc);
1014 return -ENOMEM;
1015 }
1016
1017 /* Search for type 2 record (firmware record) */
1018 start_address = get_descriptor_addr(serial,
1019 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1020 if (start_address != 0) {
1021 struct ti_i2c_firmware_rec *firmware_version;
1022 u8 *record;
1023
1024 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1025
1026 firmware_version = kmalloc(sizeof(*firmware_version),
1027 GFP_KERNEL);
1028 if (!firmware_version) {
1029 dev_err(dev, "%s - out of memory.\n", __func__);
1030 kfree(rom_desc);
1031 kfree(ti_manuf_desc);
1032 return -ENOMEM;
1033 }
1034
1035 /* Validate version number
1036 * Read the descriptor data
1037 */
1038 status = read_rom(serial, start_address +
1039 sizeof(struct ti_i2c_desc),
1040 sizeof(struct ti_i2c_firmware_rec),
1041 (__u8 *)firmware_version);
1042 if (status) {
1043 kfree(firmware_version);
1044 kfree(rom_desc);
1045 kfree(ti_manuf_desc);
1046 return status;
1047 }
1048
1049 /* Check version number of download with current
1050 version in I2c */
1051 download_cur_ver = (firmware_version->Ver_Major << 8) +
1052 (firmware_version->Ver_Minor);
1053 download_new_ver = (OperationalMajorVersion << 8) +
1054 (OperationalMinorVersion);
1055
1056 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1057 __func__, firmware_version->Ver_Major,
1058 firmware_version->Ver_Minor,
1059 OperationalMajorVersion,
1060 OperationalMinorVersion);
1061
1062 /* Check if we have an old version in the I2C and
1063 update if necessary */
1064 if (download_cur_ver < download_new_ver) {
1065 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1066 __func__,
1067 firmware_version->Ver_Major,
1068 firmware_version->Ver_Minor,
1069 OperationalMajorVersion,
1070 OperationalMinorVersion);
1071
1072 record = kmalloc(1, GFP_KERNEL);
1073 if (!record) {
1074 dev_err(dev, "%s - out of memory.\n",
1075 __func__);
1076 kfree(firmware_version);
1077 kfree(rom_desc);
1078 kfree(ti_manuf_desc);
1079 return -ENOMEM;
1080 }
1081 /* In order to update the I2C firmware we must
1082 * change the type 2 record to type 0xF2. This
1083 * will force the UMP to come up in Boot Mode.
1084 * Then while in boot mode, the driver will
1085 * download the latest firmware (padded to
1086 * 15.5k) into the UMP ram. Finally when the
1087 * device comes back up in download mode the
1088 * driver will cause the new firmware to be
1089 * copied from the UMP Ram to I2C and the
1090 * firmware will update the record type from
1091 * 0xf2 to 0x02.
1092 */
1093 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1094
1095 /* Change the I2C Firmware record type to
1096 0xf2 to trigger an update */
1097 status = write_rom(serial, start_address,
1098 sizeof(*record), record);
1099 if (status) {
1100 kfree(record);
1101 kfree(firmware_version);
1102 kfree(rom_desc);
1103 kfree(ti_manuf_desc);
1104 return status;
1105 }
1106
1107 /* verify the write -- must do this in order
1108 * for write to complete before we do the
1109 * hardware reset
1110 */
1111 status = read_rom(serial,
1112 start_address,
1113 sizeof(*record),
1114 record);
1115 if (status) {
1116 kfree(record);
1117 kfree(firmware_version);
1118 kfree(rom_desc);
1119 kfree(ti_manuf_desc);
1120 return status;
1121 }
1122
1123 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1124 dev_err(dev, "%s - error resetting device\n", __func__);
1125 kfree(record);
1126 kfree(firmware_version);
1127 kfree(rom_desc);
1128 kfree(ti_manuf_desc);
1129 return -ENODEV;
1130 }
1131
1132 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1133
1134 /* Reset UMP -- Back to BOOT MODE */
1135 status = ti_vsend_sync(serial->serial->dev,
1136 UMPC_HARDWARE_RESET,
1137 0, 0, NULL, 0);
1138
1139 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1140
1141 /* return an error on purpose. */
1142 kfree(record);
1143 kfree(firmware_version);
1144 kfree(rom_desc);
1145 kfree(ti_manuf_desc);
1146 return -ENODEV;
1147 }
1148 kfree(firmware_version);
1149 }
1150 /* Search for type 0xF2 record (firmware blank record) */
1151 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1152 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1153 sizeof(struct ti_i2c_firmware_rec))
1154 __u8 *header;
1155 __u8 *vheader;
1156
1157 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1158 if (!header) {
1159 dev_err(dev, "%s - out of memory.\n", __func__);
1160 kfree(rom_desc);
1161 kfree(ti_manuf_desc);
1162 return -ENOMEM;
1163 }
1164
1165 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1166 if (!vheader) {
1167 dev_err(dev, "%s - out of memory.\n", __func__);
1168 kfree(header);
1169 kfree(rom_desc);
1170 kfree(ti_manuf_desc);
1171 return -ENOMEM;
1172 }
1173
1174 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1175
1176 /*
1177 * In order to update the I2C firmware we must change
1178 * the type 2 record to type 0xF2. This will force the
1179 * UMP to come up in Boot Mode. Then while in boot
1180 * mode, the driver will download the latest firmware
1181 * (padded to 15.5k) into the UMP ram. Finally when the
1182 * device comes back up in download mode the driver
1183 * will cause the new firmware to be copied from the
1184 * UMP Ram to I2C and the firmware will update the
1185 * record type from 0xf2 to 0x02.
1186 */
1187 status = build_i2c_fw_hdr(header, dev);
1188 if (status) {
1189 kfree(vheader);
1190 kfree(header);
1191 kfree(rom_desc);
1192 kfree(ti_manuf_desc);
1193 return -EINVAL;
1194 }
1195
1196 /* Update I2C with type 0xf2 record with correct
1197 size and checksum */
1198 status = write_rom(serial,
1199 start_address,
1200 HEADER_SIZE,
1201 header);
1202 if (status) {
1203 kfree(vheader);
1204 kfree(header);
1205 kfree(rom_desc);
1206 kfree(ti_manuf_desc);
1207 return -EINVAL;
1208 }
1209
1210 /* verify the write -- must do this in order for
1211 write to complete before we do the hardware reset */
1212 status = read_rom(serial, start_address,
1213 HEADER_SIZE, vheader);
1214
1215 if (status) {
1216 dev_dbg(dev, "%s - can't read header back\n", __func__);
1217 kfree(vheader);
1218 kfree(header);
1219 kfree(rom_desc);
1220 kfree(ti_manuf_desc);
1221 return status;
1222 }
1223 if (memcmp(vheader, header, HEADER_SIZE)) {
1224 dev_dbg(dev, "%s - write download record failed\n", __func__);
1225 kfree(vheader);
1226 kfree(header);
1227 kfree(rom_desc);
1228 kfree(ti_manuf_desc);
1229 return -EINVAL;
1230 }
1231
1232 kfree(vheader);
1233 kfree(header);
1234
1235 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1236
1237 /* Tell firmware to copy download image into I2C */
1238 status = ti_vsend_sync(serial->serial->dev,
1239 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1240
1241 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1242 if (status) {
1243 dev_err(dev,
1244 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1245 __func__);
1246 kfree(rom_desc);
1247 kfree(ti_manuf_desc);
1248 return status;
1249 }
1250 }
1251
1252 // The device is running the download code
1253 kfree(rom_desc);
1254 kfree(ti_manuf_desc);
1255 return 0;
1256 }
1257
1258 /********************************************************************/
1259 /* Boot Mode */
1260 /********************************************************************/
1261 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1262
1263 /* Configure the TI device so we can use the BULK pipes for download */
1264 status = config_boot_dev(serial->serial->dev);
1265 if (status)
1266 return status;
1267
1268 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1269 != USB_VENDOR_ID_ION) {
1270 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1271 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1272 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1273 goto stayinbootmode;
1274 }
1275
1276 /* We have an ION device (I2c Must be programmed)
1277 Determine I2C image type */
1278 if (i2c_type_bootmode(serial))
1279 goto stayinbootmode;
1280
1281 /* Check for ION Vendor ID and that the I2C is valid */
1282 if (!check_i2c_image(serial)) {
1283 struct ti_i2c_image_header *header;
1284 int i;
1285 __u8 cs = 0;
1286 __u8 *buffer;
1287 int buffer_size;
1288 int err;
1289 const struct firmware *fw;
1290 const char *fw_name = "edgeport/down3.bin";
1291
1292 /* Validate Hardware version number
1293 * Read Manufacturing Descriptor from TI Based Edgeport
1294 */
1295 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1296 if (!ti_manuf_desc) {
1297 dev_err(dev, "%s - out of memory.\n", __func__);
1298 return -ENOMEM;
1299 }
1300 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1301 if (status) {
1302 kfree(ti_manuf_desc);
1303 goto stayinbootmode;
1304 }
1305
1306 /* Check for version 2 */
1307 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1308 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1309 __func__, ti_cpu_rev(ti_manuf_desc));
1310 kfree(ti_manuf_desc);
1311 goto stayinbootmode;
1312 }
1313
1314 kfree(ti_manuf_desc);
1315
1316 /*
1317 * In order to update the I2C firmware we must change the type
1318 * 2 record to type 0xF2. This will force the UMP to come up
1319 * in Boot Mode. Then while in boot mode, the driver will
1320 * download the latest firmware (padded to 15.5k) into the
1321 * UMP ram. Finally when the device comes back up in download
1322 * mode the driver will cause the new firmware to be copied
1323 * from the UMP Ram to I2C and the firmware will update the
1324 * record type from 0xf2 to 0x02.
1325 *
1326 * Do we really have to copy the whole firmware image,
1327 * or could we do this in place!
1328 */
1329
1330 /* Allocate a 15.5k buffer + 3 byte header */
1331 buffer_size = (((1024 * 16) - 512) +
1332 sizeof(struct ti_i2c_image_header));
1333 buffer = kmalloc(buffer_size, GFP_KERNEL);
1334 if (!buffer) {
1335 dev_err(dev, "%s - out of memory\n", __func__);
1336 return -ENOMEM;
1337 }
1338
1339 /* Initialize the buffer to 0xff (pad the buffer) */
1340 memset(buffer, 0xff, buffer_size);
1341
1342 err = request_firmware(&fw, fw_name, dev);
1343 if (err) {
1344 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1345 fw_name, err);
1346 kfree(buffer);
1347 return err;
1348 }
1349 memcpy(buffer, &fw->data[4], fw->size - 4);
1350 release_firmware(fw);
1351
1352 for (i = sizeof(struct ti_i2c_image_header);
1353 i < buffer_size; i++) {
1354 cs = (__u8)(cs + buffer[i]);
1355 }
1356
1357 header = (struct ti_i2c_image_header *)buffer;
1358
1359 /* update length and checksum after padding */
1360 header->Length = cpu_to_le16((__u16)(buffer_size -
1361 sizeof(struct ti_i2c_image_header)));
1362 header->CheckSum = cs;
1363
1364 /* Download the operational code */
1365 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1366 status = download_code(serial, buffer, buffer_size);
1367
1368 kfree(buffer);
1369
1370 if (status) {
1371 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1372 return status;
1373 }
1374
1375 /* Device will reboot */
1376 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1377
1378 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1379
1380 /* return an error on purpose */
1381 return -ENODEV;
1382 }
1383
1384 stayinbootmode:
1385 /* Eprom is invalid or blank stay in boot mode */
1386 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1387 serial->product_info.TiMode = TI_MODE_BOOT;
1388
1389 return 0;
1390 }
1391
1392
1393 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1394 {
1395 int port_number = port->port->port_number;
1396
1397 on = !!on; /* 1 or 0 not bitmask */
1398 return send_cmd(port->port->serial->dev,
1399 feature, (__u8)(UMPM_UART1_PORT + port_number),
1400 on, NULL, 0);
1401 }
1402
1403
1404 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1405 {
1406 int status = 0;
1407
1408 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1409
1410 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1411 if (status)
1412 return status;
1413 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1414 if (status)
1415 return status;
1416 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1417 }
1418
1419 /* Convert TI LSR to standard UART flags */
1420 static __u8 map_line_status(__u8 ti_lsr)
1421 {
1422 __u8 lsr = 0;
1423
1424 #define MAP_FLAG(flagUmp, flagUart) \
1425 if (ti_lsr & flagUmp) \
1426 lsr |= flagUart;
1427
1428 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1429 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1430 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1431 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1432 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1433 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1434
1435 #undef MAP_FLAG
1436
1437 return lsr;
1438 }
1439
1440 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1441 {
1442 struct async_icount *icount;
1443 struct tty_struct *tty;
1444
1445 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1446
1447 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1448 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1449 icount = &edge_port->port->icount;
1450
1451 /* update input line counters */
1452 if (msr & EDGEPORT_MSR_DELTA_CTS)
1453 icount->cts++;
1454 if (msr & EDGEPORT_MSR_DELTA_DSR)
1455 icount->dsr++;
1456 if (msr & EDGEPORT_MSR_DELTA_CD)
1457 icount->dcd++;
1458 if (msr & EDGEPORT_MSR_DELTA_RI)
1459 icount->rng++;
1460 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1461 }
1462
1463 /* Save the new modem status */
1464 edge_port->shadow_msr = msr & 0xf0;
1465
1466 tty = tty_port_tty_get(&edge_port->port->port);
1467 /* handle CTS flow control */
1468 if (tty && C_CRTSCTS(tty)) {
1469 if (msr & EDGEPORT_MSR_CTS) {
1470 tty->hw_stopped = 0;
1471 tty_wakeup(tty);
1472 } else {
1473 tty->hw_stopped = 1;
1474 }
1475 }
1476 tty_kref_put(tty);
1477 }
1478
1479 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1480 __u8 lsr, __u8 data)
1481 {
1482 struct async_icount *icount;
1483 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1484 LSR_FRM_ERR | LSR_BREAK));
1485
1486 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1487
1488 edge_port->shadow_lsr = lsr;
1489
1490 if (new_lsr & LSR_BREAK)
1491 /*
1492 * Parity and Framing errors only count if they
1493 * occur exclusive of a break being received.
1494 */
1495 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1496
1497 /* Place LSR data byte into Rx buffer */
1498 if (lsr_data)
1499 edge_tty_recv(edge_port->port, &data, 1);
1500
1501 /* update input line counters */
1502 icount = &edge_port->port->icount;
1503 if (new_lsr & LSR_BREAK)
1504 icount->brk++;
1505 if (new_lsr & LSR_OVER_ERR)
1506 icount->overrun++;
1507 if (new_lsr & LSR_PAR_ERR)
1508 icount->parity++;
1509 if (new_lsr & LSR_FRM_ERR)
1510 icount->frame++;
1511 }
1512
1513
1514 static void edge_interrupt_callback(struct urb *urb)
1515 {
1516 struct edgeport_serial *edge_serial = urb->context;
1517 struct usb_serial_port *port;
1518 struct edgeport_port *edge_port;
1519 struct device *dev;
1520 unsigned char *data = urb->transfer_buffer;
1521 int length = urb->actual_length;
1522 int port_number;
1523 int function;
1524 int retval;
1525 __u8 lsr;
1526 __u8 msr;
1527 int status = urb->status;
1528
1529 switch (status) {
1530 case 0:
1531 /* success */
1532 break;
1533 case -ECONNRESET:
1534 case -ENOENT:
1535 case -ESHUTDOWN:
1536 /* this urb is terminated, clean up */
1537 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1538 __func__, status);
1539 return;
1540 default:
1541 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1542 "%d\n", __func__, status);
1543 goto exit;
1544 }
1545
1546 if (!length) {
1547 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1548 goto exit;
1549 }
1550
1551 dev = &edge_serial->serial->dev->dev;
1552 usb_serial_debug_data(dev, __func__, length, data);
1553
1554 if (length != 2) {
1555 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1556 goto exit;
1557 }
1558
1559 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1560 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1561 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1562 port_number, function, data[1]);
1563 port = edge_serial->serial->port[port_number];
1564 edge_port = usb_get_serial_port_data(port);
1565 if (!edge_port) {
1566 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1567 return;
1568 }
1569 switch (function) {
1570 case TIUMP_INTERRUPT_CODE_LSR:
1571 lsr = map_line_status(data[1]);
1572 if (lsr & UMP_UART_LSR_DATA_MASK) {
1573 /* Save the LSR event for bulk read
1574 completion routine */
1575 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1576 __func__, port_number, lsr);
1577 edge_port->lsr_event = 1;
1578 edge_port->lsr_mask = lsr;
1579 } else {
1580 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1581 __func__, port_number, lsr);
1582 handle_new_lsr(edge_port, 0, lsr, 0);
1583 }
1584 break;
1585
1586 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1587 /* Copy MSR from UMP */
1588 msr = data[1];
1589 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1590 __func__, port_number, msr);
1591 handle_new_msr(edge_port, msr);
1592 break;
1593
1594 default:
1595 dev_err(&urb->dev->dev,
1596 "%s - Unknown Interrupt code from UMP %x\n",
1597 __func__, data[1]);
1598 break;
1599
1600 }
1601
1602 exit:
1603 retval = usb_submit_urb(urb, GFP_ATOMIC);
1604 if (retval)
1605 dev_err(&urb->dev->dev,
1606 "%s - usb_submit_urb failed with result %d\n",
1607 __func__, retval);
1608 }
1609
1610 static void edge_bulk_in_callback(struct urb *urb)
1611 {
1612 struct edgeport_port *edge_port = urb->context;
1613 struct device *dev = &edge_port->port->dev;
1614 unsigned char *data = urb->transfer_buffer;
1615 int retval = 0;
1616 int port_number;
1617 int status = urb->status;
1618
1619 switch (status) {
1620 case 0:
1621 /* success */
1622 break;
1623 case -ECONNRESET:
1624 case -ENOENT:
1625 case -ESHUTDOWN:
1626 /* this urb is terminated, clean up */
1627 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1628 return;
1629 default:
1630 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1631 }
1632
1633 if (status == -EPIPE)
1634 goto exit;
1635
1636 if (status) {
1637 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1638 return;
1639 }
1640
1641 port_number = edge_port->port->port_number;
1642
1643 if (edge_port->lsr_event) {
1644 edge_port->lsr_event = 0;
1645 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1646 __func__, port_number, edge_port->lsr_mask, *data);
1647 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1648 /* Adjust buffer length/pointer */
1649 --urb->actual_length;
1650 ++data;
1651 }
1652
1653 if (urb->actual_length) {
1654 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1655 if (edge_port->close_pending)
1656 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1657 __func__);
1658 else
1659 edge_tty_recv(edge_port->port, data,
1660 urb->actual_length);
1661 edge_port->port->icount.rx += urb->actual_length;
1662 }
1663
1664 exit:
1665 /* continue read unless stopped */
1666 spin_lock(&edge_port->ep_lock);
1667 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1668 retval = usb_submit_urb(urb, GFP_ATOMIC);
1669 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1670 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1671
1672 spin_unlock(&edge_port->ep_lock);
1673 if (retval)
1674 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1675 }
1676
1677 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1678 int length)
1679 {
1680 int queued;
1681
1682 queued = tty_insert_flip_string(&port->port, data, length);
1683 if (queued < length)
1684 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1685 __func__, length - queued);
1686 tty_flip_buffer_push(&port->port);
1687 }
1688
1689 static void edge_bulk_out_callback(struct urb *urb)
1690 {
1691 struct usb_serial_port *port = urb->context;
1692 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1693 int status = urb->status;
1694 struct tty_struct *tty;
1695
1696 edge_port->ep_write_urb_in_use = 0;
1697
1698 switch (status) {
1699 case 0:
1700 /* success */
1701 break;
1702 case -ECONNRESET:
1703 case -ENOENT:
1704 case -ESHUTDOWN:
1705 /* this urb is terminated, clean up */
1706 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1707 __func__, status);
1708 return;
1709 default:
1710 dev_err_console(port, "%s - nonzero write bulk status "
1711 "received: %d\n", __func__, status);
1712 }
1713
1714 /* send any buffered data */
1715 tty = tty_port_tty_get(&port->port);
1716 edge_send(port, tty);
1717 tty_kref_put(tty);
1718 }
1719
1720 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1721 {
1722 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1723 struct edgeport_serial *edge_serial;
1724 struct usb_device *dev;
1725 struct urb *urb;
1726 int port_number;
1727 int status;
1728 u16 open_settings;
1729 u8 transaction_timeout;
1730
1731 if (edge_port == NULL)
1732 return -ENODEV;
1733
1734 port_number = port->port_number;
1735 switch (port_number) {
1736 case 0:
1737 edge_port->uart_base = UMPMEM_BASE_UART1;
1738 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1739 break;
1740 case 1:
1741 edge_port->uart_base = UMPMEM_BASE_UART2;
1742 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1743 break;
1744 default:
1745 dev_err(&port->dev, "Unknown port number!!!\n");
1746 return -ENODEV;
1747 }
1748
1749 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1750 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1751
1752 dev = port->serial->dev;
1753
1754 /* turn off loopback */
1755 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1756 if (status) {
1757 dev_err(&port->dev,
1758 "%s - cannot send clear loopback command, %d\n",
1759 __func__, status);
1760 return status;
1761 }
1762
1763 /* set up the port settings */
1764 if (tty)
1765 edge_set_termios(tty, port, &tty->termios);
1766
1767 /* open up the port */
1768
1769 /* milliseconds to timeout for DMA transfer */
1770 transaction_timeout = 2;
1771
1772 edge_port->ump_read_timeout =
1773 max(20, ((transaction_timeout * 3) / 2));
1774
1775 /* milliseconds to timeout for DMA transfer */
1776 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1777 UMP_PIPE_TRANS_TIMEOUT_ENA |
1778 (transaction_timeout << 2));
1779
1780 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1781
1782 /* Tell TI to open and start the port */
1783 status = send_cmd(dev, UMPC_OPEN_PORT,
1784 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1785 if (status) {
1786 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1787 __func__, status);
1788 return status;
1789 }
1790
1791 /* Start the DMA? */
1792 status = send_cmd(dev, UMPC_START_PORT,
1793 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1794 if (status) {
1795 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1796 __func__, status);
1797 return status;
1798 }
1799
1800 /* Clear TX and RX buffers in UMP */
1801 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1802 if (status) {
1803 dev_err(&port->dev,
1804 "%s - cannot send clear buffers command, %d\n",
1805 __func__, status);
1806 return status;
1807 }
1808
1809 /* Read Initial MSR */
1810 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1811 (__u16)(UMPM_UART1_PORT + port_number),
1812 &edge_port->shadow_msr, 1);
1813 if (status) {
1814 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1815 __func__, status);
1816 return status;
1817 }
1818
1819 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1820
1821 /* Set Initial MCR */
1822 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1823 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1824
1825 edge_serial = edge_port->edge_serial;
1826 if (mutex_lock_interruptible(&edge_serial->es_lock))
1827 return -ERESTARTSYS;
1828 if (edge_serial->num_ports_open == 0) {
1829 /* we are the first port to open, post the interrupt urb */
1830 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1831 if (!urb) {
1832 dev_err(&port->dev,
1833 "%s - no interrupt urb present, exiting\n",
1834 __func__);
1835 status = -EINVAL;
1836 goto release_es_lock;
1837 }
1838 urb->context = edge_serial;
1839 status = usb_submit_urb(urb, GFP_KERNEL);
1840 if (status) {
1841 dev_err(&port->dev,
1842 "%s - usb_submit_urb failed with value %d\n",
1843 __func__, status);
1844 goto release_es_lock;
1845 }
1846 }
1847
1848 /*
1849 * reset the data toggle on the bulk endpoints to work around bug in
1850 * host controllers where things get out of sync some times
1851 */
1852 usb_clear_halt(dev, port->write_urb->pipe);
1853 usb_clear_halt(dev, port->read_urb->pipe);
1854
1855 /* start up our bulk read urb */
1856 urb = port->read_urb;
1857 if (!urb) {
1858 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1859 __func__);
1860 status = -EINVAL;
1861 goto unlink_int_urb;
1862 }
1863 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1864 urb->context = edge_port;
1865 status = usb_submit_urb(urb, GFP_KERNEL);
1866 if (status) {
1867 dev_err(&port->dev,
1868 "%s - read bulk usb_submit_urb failed with value %d\n",
1869 __func__, status);
1870 goto unlink_int_urb;
1871 }
1872
1873 ++edge_serial->num_ports_open;
1874
1875 port->port.drain_delay = 1;
1876
1877 goto release_es_lock;
1878
1879 unlink_int_urb:
1880 if (edge_port->edge_serial->num_ports_open == 0)
1881 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1882 release_es_lock:
1883 mutex_unlock(&edge_serial->es_lock);
1884 return status;
1885 }
1886
1887 static void edge_close(struct usb_serial_port *port)
1888 {
1889 struct edgeport_serial *edge_serial;
1890 struct edgeport_port *edge_port;
1891 struct usb_serial *serial = port->serial;
1892 unsigned long flags;
1893 int port_number;
1894
1895 edge_serial = usb_get_serial_data(port->serial);
1896 edge_port = usb_get_serial_port_data(port);
1897 if (edge_serial == NULL || edge_port == NULL)
1898 return;
1899
1900 /* The bulkreadcompletion routine will check
1901 * this flag and dump add read data */
1902 edge_port->close_pending = 1;
1903
1904 usb_kill_urb(port->read_urb);
1905 usb_kill_urb(port->write_urb);
1906 edge_port->ep_write_urb_in_use = 0;
1907 spin_lock_irqsave(&edge_port->ep_lock, flags);
1908 kfifo_reset_out(&edge_port->write_fifo);
1909 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1910
1911 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1912 port_number = port->port_number;
1913 send_cmd(serial->dev, UMPC_CLOSE_PORT,
1914 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1915
1916 mutex_lock(&edge_serial->es_lock);
1917 --edge_port->edge_serial->num_ports_open;
1918 if (edge_port->edge_serial->num_ports_open <= 0) {
1919 /* last port is now closed, let's shut down our interrupt urb */
1920 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1921 edge_port->edge_serial->num_ports_open = 0;
1922 }
1923 mutex_unlock(&edge_serial->es_lock);
1924 edge_port->close_pending = 0;
1925 }
1926
1927 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1928 const unsigned char *data, int count)
1929 {
1930 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1931
1932 if (count == 0) {
1933 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1934 return 0;
1935 }
1936
1937 if (edge_port == NULL)
1938 return -ENODEV;
1939 if (edge_port->close_pending == 1)
1940 return -ENODEV;
1941
1942 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
1943 &edge_port->ep_lock);
1944 edge_send(port, tty);
1945
1946 return count;
1947 }
1948
1949 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
1950 {
1951 int count, result;
1952 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1953 unsigned long flags;
1954
1955 spin_lock_irqsave(&edge_port->ep_lock, flags);
1956
1957 if (edge_port->ep_write_urb_in_use) {
1958 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1959 return;
1960 }
1961
1962 count = kfifo_out(&edge_port->write_fifo,
1963 port->write_urb->transfer_buffer,
1964 port->bulk_out_size);
1965
1966 if (count == 0) {
1967 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1968 return;
1969 }
1970
1971 edge_port->ep_write_urb_in_use = 1;
1972
1973 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1974
1975 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1976
1977 /* set up our urb */
1978 port->write_urb->transfer_buffer_length = count;
1979
1980 /* send the data out the bulk port */
1981 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1982 if (result) {
1983 dev_err_console(port,
1984 "%s - failed submitting write urb, error %d\n",
1985 __func__, result);
1986 edge_port->ep_write_urb_in_use = 0;
1987 /* TODO: reschedule edge_send */
1988 } else
1989 edge_port->port->icount.tx += count;
1990
1991 /* wakeup any process waiting for writes to complete */
1992 /* there is now more room in the buffer for new writes */
1993 if (tty)
1994 tty_wakeup(tty);
1995 }
1996
1997 static int edge_write_room(struct tty_struct *tty)
1998 {
1999 struct usb_serial_port *port = tty->driver_data;
2000 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2001 int room = 0;
2002 unsigned long flags;
2003
2004 if (edge_port == NULL)
2005 return 0;
2006 if (edge_port->close_pending == 1)
2007 return 0;
2008
2009 spin_lock_irqsave(&edge_port->ep_lock, flags);
2010 room = kfifo_avail(&edge_port->write_fifo);
2011 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2012
2013 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2014 return room;
2015 }
2016
2017 static int edge_chars_in_buffer(struct tty_struct *tty)
2018 {
2019 struct usb_serial_port *port = tty->driver_data;
2020 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2021 int chars = 0;
2022 unsigned long flags;
2023 if (edge_port == NULL)
2024 return 0;
2025
2026 spin_lock_irqsave(&edge_port->ep_lock, flags);
2027 chars = kfifo_len(&edge_port->write_fifo);
2028 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2029
2030 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2031 return chars;
2032 }
2033
2034 static bool edge_tx_empty(struct usb_serial_port *port)
2035 {
2036 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2037 int ret;
2038
2039 ret = tx_active(edge_port);
2040 if (ret > 0)
2041 return false;
2042
2043 return true;
2044 }
2045
2046 static void edge_throttle(struct tty_struct *tty)
2047 {
2048 struct usb_serial_port *port = tty->driver_data;
2049 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2050 int status;
2051
2052 if (edge_port == NULL)
2053 return;
2054
2055 /* if we are implementing XON/XOFF, send the stop character */
2056 if (I_IXOFF(tty)) {
2057 unsigned char stop_char = STOP_CHAR(tty);
2058 status = edge_write(tty, port, &stop_char, 1);
2059 if (status <= 0) {
2060 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2061 }
2062 }
2063
2064 /* if we are implementing RTS/CTS, stop reads */
2065 /* and the Edgeport will clear the RTS line */
2066 if (C_CRTSCTS(tty))
2067 stop_read(edge_port);
2068
2069 }
2070
2071 static void edge_unthrottle(struct tty_struct *tty)
2072 {
2073 struct usb_serial_port *port = tty->driver_data;
2074 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2075 int status;
2076
2077 if (edge_port == NULL)
2078 return;
2079
2080 /* if we are implementing XON/XOFF, send the start character */
2081 if (I_IXOFF(tty)) {
2082 unsigned char start_char = START_CHAR(tty);
2083 status = edge_write(tty, port, &start_char, 1);
2084 if (status <= 0) {
2085 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2086 }
2087 }
2088 /* if we are implementing RTS/CTS, restart reads */
2089 /* are the Edgeport will assert the RTS line */
2090 if (C_CRTSCTS(tty)) {
2091 status = restart_read(edge_port);
2092 if (status)
2093 dev_err(&port->dev,
2094 "%s - read bulk usb_submit_urb failed: %d\n",
2095 __func__, status);
2096 }
2097
2098 }
2099
2100 static void stop_read(struct edgeport_port *edge_port)
2101 {
2102 unsigned long flags;
2103
2104 spin_lock_irqsave(&edge_port->ep_lock, flags);
2105
2106 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2107 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2108 edge_port->shadow_mcr &= ~MCR_RTS;
2109
2110 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2111 }
2112
2113 static int restart_read(struct edgeport_port *edge_port)
2114 {
2115 struct urb *urb;
2116 int status = 0;
2117 unsigned long flags;
2118
2119 spin_lock_irqsave(&edge_port->ep_lock, flags);
2120
2121 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2122 urb = edge_port->port->read_urb;
2123 status = usb_submit_urb(urb, GFP_ATOMIC);
2124 }
2125 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2126 edge_port->shadow_mcr |= MCR_RTS;
2127
2128 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2129
2130 return status;
2131 }
2132
2133 static void change_port_settings(struct tty_struct *tty,
2134 struct edgeport_port *edge_port, struct ktermios *old_termios)
2135 {
2136 struct device *dev = &edge_port->port->dev;
2137 struct ump_uart_config *config;
2138 int baud;
2139 unsigned cflag;
2140 int status;
2141 int port_number = edge_port->port->port_number;
2142
2143 config = kmalloc (sizeof (*config), GFP_KERNEL);
2144 if (!config) {
2145 tty->termios = *old_termios;
2146 dev_err(dev, "%s - out of memory\n", __func__);
2147 return;
2148 }
2149
2150 cflag = tty->termios.c_cflag;
2151
2152 config->wFlags = 0;
2153
2154 /* These flags must be set */
2155 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2156 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2157 config->bUartMode = (__u8)(edge_port->bUartMode);
2158
2159 switch (cflag & CSIZE) {
2160 case CS5:
2161 config->bDataBits = UMP_UART_CHAR5BITS;
2162 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2163 break;
2164 case CS6:
2165 config->bDataBits = UMP_UART_CHAR6BITS;
2166 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2167 break;
2168 case CS7:
2169 config->bDataBits = UMP_UART_CHAR7BITS;
2170 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2171 break;
2172 default:
2173 case CS8:
2174 config->bDataBits = UMP_UART_CHAR8BITS;
2175 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2176 break;
2177 }
2178
2179 if (cflag & PARENB) {
2180 if (cflag & PARODD) {
2181 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2182 config->bParity = UMP_UART_ODDPARITY;
2183 dev_dbg(dev, "%s - parity = odd\n", __func__);
2184 } else {
2185 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2186 config->bParity = UMP_UART_EVENPARITY;
2187 dev_dbg(dev, "%s - parity = even\n", __func__);
2188 }
2189 } else {
2190 config->bParity = UMP_UART_NOPARITY;
2191 dev_dbg(dev, "%s - parity = none\n", __func__);
2192 }
2193
2194 if (cflag & CSTOPB) {
2195 config->bStopBits = UMP_UART_STOPBIT2;
2196 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2197 } else {
2198 config->bStopBits = UMP_UART_STOPBIT1;
2199 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2200 }
2201
2202 /* figure out the flow control settings */
2203 if (cflag & CRTSCTS) {
2204 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2205 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2206 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2207 } else {
2208 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2209 tty->hw_stopped = 0;
2210 restart_read(edge_port);
2211 }
2212
2213 /* if we are implementing XON/XOFF, set the start and stop
2214 character in the device */
2215 config->cXon = START_CHAR(tty);
2216 config->cXoff = STOP_CHAR(tty);
2217
2218 /* if we are implementing INBOUND XON/XOFF */
2219 if (I_IXOFF(tty)) {
2220 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2221 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2222 __func__, config->cXon, config->cXoff);
2223 } else
2224 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2225
2226 /* if we are implementing OUTBOUND XON/XOFF */
2227 if (I_IXON(tty)) {
2228 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2229 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2230 __func__, config->cXon, config->cXoff);
2231 } else
2232 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2233
2234 tty->termios.c_cflag &= ~CMSPAR;
2235
2236 /* Round the baud rate */
2237 baud = tty_get_baud_rate(tty);
2238 if (!baud) {
2239 /* pick a default, any default... */
2240 baud = 9600;
2241 } else
2242 tty_encode_baud_rate(tty, baud, baud);
2243
2244 edge_port->baud_rate = baud;
2245 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2246
2247 /* FIXME: Recompute actual baud from divisor here */
2248
2249 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2250
2251 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2252 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2253 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2254 dev_dbg(dev, "bParity: %d\n", config->bParity);
2255 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2256 dev_dbg(dev, "cXon: %d\n", config->cXon);
2257 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2258 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2259
2260 /* move the word values into big endian mode */
2261 cpu_to_be16s(&config->wFlags);
2262 cpu_to_be16s(&config->wBaudRate);
2263
2264 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2265 (__u8)(UMPM_UART1_PORT + port_number),
2266 0, (__u8 *)config, sizeof(*config));
2267 if (status)
2268 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2269 __func__, status);
2270 kfree(config);
2271 }
2272
2273 static void edge_set_termios(struct tty_struct *tty,
2274 struct usb_serial_port *port, struct ktermios *old_termios)
2275 {
2276 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2277 unsigned int cflag;
2278
2279 cflag = tty->termios.c_cflag;
2280
2281 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2282 tty->termios.c_cflag, tty->termios.c_iflag);
2283 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2284 old_termios->c_cflag, old_termios->c_iflag);
2285
2286 if (edge_port == NULL)
2287 return;
2288 /* change the port settings to the new ones specified */
2289 change_port_settings(tty, edge_port, old_termios);
2290 }
2291
2292 static int edge_tiocmset(struct tty_struct *tty,
2293 unsigned int set, unsigned int clear)
2294 {
2295 struct usb_serial_port *port = tty->driver_data;
2296 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2297 unsigned int mcr;
2298 unsigned long flags;
2299
2300 spin_lock_irqsave(&edge_port->ep_lock, flags);
2301 mcr = edge_port->shadow_mcr;
2302 if (set & TIOCM_RTS)
2303 mcr |= MCR_RTS;
2304 if (set & TIOCM_DTR)
2305 mcr |= MCR_DTR;
2306 if (set & TIOCM_LOOP)
2307 mcr |= MCR_LOOPBACK;
2308
2309 if (clear & TIOCM_RTS)
2310 mcr &= ~MCR_RTS;
2311 if (clear & TIOCM_DTR)
2312 mcr &= ~MCR_DTR;
2313 if (clear & TIOCM_LOOP)
2314 mcr &= ~MCR_LOOPBACK;
2315
2316 edge_port->shadow_mcr = mcr;
2317 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2318
2319 restore_mcr(edge_port, mcr);
2320 return 0;
2321 }
2322
2323 static int edge_tiocmget(struct tty_struct *tty)
2324 {
2325 struct usb_serial_port *port = tty->driver_data;
2326 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2327 unsigned int result = 0;
2328 unsigned int msr;
2329 unsigned int mcr;
2330 unsigned long flags;
2331
2332 spin_lock_irqsave(&edge_port->ep_lock, flags);
2333
2334 msr = edge_port->shadow_msr;
2335 mcr = edge_port->shadow_mcr;
2336 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2337 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2338 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2339 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2340 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2341 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2342
2343
2344 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2345 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2346
2347 return result;
2348 }
2349
2350 static int get_serial_info(struct edgeport_port *edge_port,
2351 struct serial_struct __user *retinfo)
2352 {
2353 struct serial_struct tmp;
2354 unsigned cwait;
2355
2356 if (!retinfo)
2357 return -EFAULT;
2358
2359 cwait = edge_port->port->port.closing_wait;
2360 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2361 cwait = jiffies_to_msecs(cwait) / 10;
2362
2363 memset(&tmp, 0, sizeof(tmp));
2364
2365 tmp.type = PORT_16550A;
2366 tmp.line = edge_port->port->minor;
2367 tmp.port = edge_port->port->port_number;
2368 tmp.irq = 0;
2369 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2370 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2371 tmp.baud_base = 9600;
2372 tmp.close_delay = 5*HZ;
2373 tmp.closing_wait = cwait;
2374
2375 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2376 return -EFAULT;
2377 return 0;
2378 }
2379
2380 static int edge_ioctl(struct tty_struct *tty,
2381 unsigned int cmd, unsigned long arg)
2382 {
2383 struct usb_serial_port *port = tty->driver_data;
2384 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2385
2386 dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd);
2387
2388 switch (cmd) {
2389 case TIOCGSERIAL:
2390 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2391 return get_serial_info(edge_port,
2392 (struct serial_struct __user *) arg);
2393 }
2394 return -ENOIOCTLCMD;
2395 }
2396
2397 static void edge_break(struct tty_struct *tty, int break_state)
2398 {
2399 struct usb_serial_port *port = tty->driver_data;
2400 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2401 int status;
2402 int bv = 0; /* Off */
2403
2404 if (break_state == -1)
2405 bv = 1; /* On */
2406 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2407 if (status)
2408 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2409 __func__, status);
2410 }
2411
2412 static int edge_startup(struct usb_serial *serial)
2413 {
2414 struct edgeport_serial *edge_serial;
2415 int status;
2416
2417 /* create our private serial structure */
2418 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2419 if (edge_serial == NULL) {
2420 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2421 return -ENOMEM;
2422 }
2423 mutex_init(&edge_serial->es_lock);
2424 edge_serial->serial = serial;
2425 usb_set_serial_data(serial, edge_serial);
2426
2427 status = download_fw(edge_serial);
2428 if (status) {
2429 kfree(edge_serial);
2430 return status;
2431 }
2432
2433 return 0;
2434 }
2435
2436 static void edge_disconnect(struct usb_serial *serial)
2437 {
2438 }
2439
2440 static void edge_release(struct usb_serial *serial)
2441 {
2442 kfree(usb_get_serial_data(serial));
2443 }
2444
2445 static int edge_port_probe(struct usb_serial_port *port)
2446 {
2447 struct edgeport_port *edge_port;
2448 int ret;
2449
2450 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2451 if (!edge_port)
2452 return -ENOMEM;
2453
2454 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2455 GFP_KERNEL);
2456 if (ret) {
2457 kfree(edge_port);
2458 return -ENOMEM;
2459 }
2460
2461 spin_lock_init(&edge_port->ep_lock);
2462 edge_port->port = port;
2463 edge_port->edge_serial = usb_get_serial_data(port->serial);
2464 edge_port->bUartMode = default_uart_mode;
2465
2466 usb_set_serial_port_data(port, edge_port);
2467
2468 ret = edge_create_sysfs_attrs(port);
2469 if (ret) {
2470 kfifo_free(&edge_port->write_fifo);
2471 kfree(edge_port);
2472 return ret;
2473 }
2474
2475 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2476
2477 return 0;
2478 }
2479
2480 static int edge_port_remove(struct usb_serial_port *port)
2481 {
2482 struct edgeport_port *edge_port;
2483
2484 edge_port = usb_get_serial_port_data(port);
2485 edge_remove_sysfs_attrs(port);
2486 kfifo_free(&edge_port->write_fifo);
2487 kfree(edge_port);
2488
2489 return 0;
2490 }
2491
2492 /* Sysfs Attributes */
2493
2494 static ssize_t show_uart_mode(struct device *dev,
2495 struct device_attribute *attr, char *buf)
2496 {
2497 struct usb_serial_port *port = to_usb_serial_port(dev);
2498 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2499
2500 return sprintf(buf, "%d\n", edge_port->bUartMode);
2501 }
2502
2503 static ssize_t store_uart_mode(struct device *dev,
2504 struct device_attribute *attr, const char *valbuf, size_t count)
2505 {
2506 struct usb_serial_port *port = to_usb_serial_port(dev);
2507 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2508 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2509
2510 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2511
2512 if (v < 256)
2513 edge_port->bUartMode = v;
2514 else
2515 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2516
2517 return count;
2518 }
2519
2520 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2521 store_uart_mode);
2522
2523 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2524 {
2525 return device_create_file(&port->dev, &dev_attr_uart_mode);
2526 }
2527
2528 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2529 {
2530 device_remove_file(&port->dev, &dev_attr_uart_mode);
2531 return 0;
2532 }
2533
2534
2535 static struct usb_serial_driver edgeport_1port_device = {
2536 .driver = {
2537 .owner = THIS_MODULE,
2538 .name = "edgeport_ti_1",
2539 },
2540 .description = "Edgeport TI 1 port adapter",
2541 .id_table = edgeport_1port_id_table,
2542 .num_ports = 1,
2543 .open = edge_open,
2544 .close = edge_close,
2545 .throttle = edge_throttle,
2546 .unthrottle = edge_unthrottle,
2547 .attach = edge_startup,
2548 .disconnect = edge_disconnect,
2549 .release = edge_release,
2550 .port_probe = edge_port_probe,
2551 .port_remove = edge_port_remove,
2552 .ioctl = edge_ioctl,
2553 .set_termios = edge_set_termios,
2554 .tiocmget = edge_tiocmget,
2555 .tiocmset = edge_tiocmset,
2556 .tiocmiwait = usb_serial_generic_tiocmiwait,
2557 .get_icount = usb_serial_generic_get_icount,
2558 .write = edge_write,
2559 .write_room = edge_write_room,
2560 .chars_in_buffer = edge_chars_in_buffer,
2561 .tx_empty = edge_tx_empty,
2562 .break_ctl = edge_break,
2563 .read_int_callback = edge_interrupt_callback,
2564 .read_bulk_callback = edge_bulk_in_callback,
2565 .write_bulk_callback = edge_bulk_out_callback,
2566 };
2567
2568 static struct usb_serial_driver edgeport_2port_device = {
2569 .driver = {
2570 .owner = THIS_MODULE,
2571 .name = "edgeport_ti_2",
2572 },
2573 .description = "Edgeport TI 2 port adapter",
2574 .id_table = edgeport_2port_id_table,
2575 .num_ports = 2,
2576 .open = edge_open,
2577 .close = edge_close,
2578 .throttle = edge_throttle,
2579 .unthrottle = edge_unthrottle,
2580 .attach = edge_startup,
2581 .disconnect = edge_disconnect,
2582 .release = edge_release,
2583 .port_probe = edge_port_probe,
2584 .port_remove = edge_port_remove,
2585 .ioctl = edge_ioctl,
2586 .set_termios = edge_set_termios,
2587 .tiocmget = edge_tiocmget,
2588 .tiocmset = edge_tiocmset,
2589 .tiocmiwait = usb_serial_generic_tiocmiwait,
2590 .get_icount = usb_serial_generic_get_icount,
2591 .write = edge_write,
2592 .write_room = edge_write_room,
2593 .chars_in_buffer = edge_chars_in_buffer,
2594 .tx_empty = edge_tx_empty,
2595 .break_ctl = edge_break,
2596 .read_int_callback = edge_interrupt_callback,
2597 .read_bulk_callback = edge_bulk_in_callback,
2598 .write_bulk_callback = edge_bulk_out_callback,
2599 };
2600
2601 static struct usb_serial_driver * const serial_drivers[] = {
2602 &edgeport_1port_device, &edgeport_2port_device, NULL
2603 };
2604
2605 module_usb_serial_driver(serial_drivers, id_table_combined);
2606
2607 MODULE_AUTHOR(DRIVER_AUTHOR);
2608 MODULE_DESCRIPTION(DRIVER_DESC);
2609 MODULE_LICENSE("GPL");
2610 MODULE_FIRMWARE("edgeport/down3.bin");
2611
2612 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2613 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2614
2615 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2616 MODULE_PARM_DESC(ignore_cpu_rev,
2617 "Ignore the cpu revision when connecting to a device");
2618
2619 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2620 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux with added FPC-III support