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Linux 3.12.39
[linux/fpc-iii.git] / drivers / usb / serial / io_ti.c
blob0385bc4efefa389698b356c6818687cc3a19a6e2
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/swab.h>
33 #include <linux/kfifo.h>
34 #include <linux/ioctl.h>
35 #include <linux/firmware.h>
36 #include <linux/uaccess.h>
37 #include <linux/usb.h>
38 #include <linux/usb/serial.h>
39
40 #include "io_16654.h"
41 #include "io_usbvend.h"
42 #include "io_ti.h"
43
44 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
45 #define DRIVER_DESC "Edgeport USB Serial Driver"
46
47 #define EPROM_PAGE_SIZE 64
48
49
50 /* different hardware types */
51 #define HARDWARE_TYPE_930 0
52 #define HARDWARE_TYPE_TIUMP 1
53
54 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
55 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
56 #define TI_MODE_BOOT 1 /* Staying in boot mode */
57 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
58 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
59 transitioning to download mode */
60
61 /* read urb state */
62 #define EDGE_READ_URB_RUNNING 0
63 #define EDGE_READ_URB_STOPPING 1
64 #define EDGE_READ_URB_STOPPED 2
65
66 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
67
68
69 /* Product information read from the Edgeport */
70 struct product_info {
71 int TiMode; /* Current TI Mode */
72 __u8 hardware_type; /* Type of hardware */
73 } __attribute__((packed));
74
75 struct edgeport_port {
76 __u16 uart_base;
77 __u16 dma_address;
78 __u8 shadow_msr;
79 __u8 shadow_mcr;
80 __u8 shadow_lsr;
81 __u8 lsr_mask;
82 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
83 wait without data before completing
84 a read short */
85 int baud_rate;
86 int close_pending;
87 int lsr_event;
88
89 struct edgeport_serial *edge_serial;
90 struct usb_serial_port *port;
91 __u8 bUartMode; /* Port type, 0: RS232, etc. */
92 spinlock_t ep_lock;
93 int ep_read_urb_state;
94 int ep_write_urb_in_use;
95 };
96
97 struct edgeport_serial {
98 struct product_info product_info;
99 u8 TI_I2C_Type; /* Type of I2C in UMP */
100 u8 TiReadI2C; /* Set to TRUE if we have read the
101 I2c in Boot Mode */
102 struct mutex es_lock;
103 int num_ports_open;
104 struct usb_serial *serial;
105 };
106
107
108 /* Devices that this driver supports */
109 static const struct usb_device_id edgeport_1port_id_table[] = {
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
126 { }
127 };
128
129 static const struct usb_device_id edgeport_2port_id_table[] = {
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
142 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
148 { }
149 };
150
151 /* Devices that this driver supports */
152 static const struct usb_device_id id_table_combined[] = {
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
186 { }
187 };
188
189 MODULE_DEVICE_TABLE(usb, id_table_combined);
190
191 static unsigned char OperationalMajorVersion;
192 static unsigned char OperationalMinorVersion;
193 static unsigned short OperationalBuildNumber;
194
195 static int closing_wait = EDGE_CLOSING_WAIT;
196 static bool ignore_cpu_rev;
197 static int default_uart_mode; /* RS232 */
198
199 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
200 int length);
201
202 static void stop_read(struct edgeport_port *edge_port);
203 static int restart_read(struct edgeport_port *edge_port);
204
205 static void edge_set_termios(struct tty_struct *tty,
206 struct usb_serial_port *port, struct ktermios *old_termios);
207 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
208
209 /* sysfs attributes */
210 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
211 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
212
213
214 static int ti_vread_sync(struct usb_device *dev, __u8 request,
215 __u16 value, __u16 index, u8 *data, int size)
216 {
217 int status;
218
219 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
220 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
221 value, index, data, size, 1000);
222 if (status < 0)
223 return status;
224 if (status != size) {
225 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
226 __func__, size, status);
227 return -ECOMM;
228 }
229 return 0;
230 }
231
232 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
233 __u16 value, __u16 index, u8 *data, int size)
234 {
235 int status;
236
237 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
238 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
239 value, index, data, size, 1000);
240 if (status < 0)
241 return status;
242 if (status != size) {
243 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
244 __func__, size, status);
245 return -ECOMM;
246 }
247 return 0;
248 }
249
250 static int send_cmd(struct usb_device *dev, __u8 command,
251 __u8 moduleid, __u16 value, u8 *data,
252 int size)
253 {
254 return ti_vsend_sync(dev, command, value, moduleid, data, size);
255 }
256
257 /* clear tx/rx buffers and fifo in TI UMP */
258 static int purge_port(struct usb_serial_port *port, __u16 mask)
259 {
260 int port_number = port->port_number;
261
262 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
263
264 return send_cmd(port->serial->dev,
265 UMPC_PURGE_PORT,
266 (__u8)(UMPM_UART1_PORT + port_number),
267 mask,
268 NULL,
269 0);
270 }
271
272 /**
273 * read_download_mem - Read edgeport memory from TI chip
274 * @dev: usb device pointer
275 * @start_address: Device CPU address at which to read
276 * @length: Length of above data
277 * @address_type: Can read both XDATA and I2C
278 * @buffer: pointer to input data buffer
279 */
280 static int read_download_mem(struct usb_device *dev, int start_address,
281 int length, __u8 address_type, __u8 *buffer)
282 {
283 int status = 0;
284 __u8 read_length;
285 u16 be_start_address;
286
287 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
288
289 /* Read in blocks of 64 bytes
290 * (TI firmware can't handle more than 64 byte reads)
291 */
292 while (length) {
293 if (length > 64)
294 read_length = 64;
295 else
296 read_length = (__u8)length;
297
298 if (read_length > 1) {
299 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
300 }
301 /*
302 * NOTE: Must use swab as wIndex is sent in little-endian
303 * byte order regardless of host byte order.
304 */
305 be_start_address = swab16((u16)start_address);
306 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
307 (__u16)address_type,
308 be_start_address,
309 buffer, read_length);
310
311 if (status) {
312 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
313 return status;
314 }
315
316 if (read_length > 1)
317 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
318
319 /* Update pointers/length */
320 start_address += read_length;
321 buffer += read_length;
322 length -= read_length;
323 }
324
325 return status;
326 }
327
328 static int read_ram(struct usb_device *dev, int start_address,
329 int length, __u8 *buffer)
330 {
331 return read_download_mem(dev, start_address, length,
332 DTK_ADDR_SPACE_XDATA, buffer);
333 }
334
335 /* Read edgeport memory to a given block */
336 static int read_boot_mem(struct edgeport_serial *serial,
337 int start_address, int length, __u8 *buffer)
338 {
339 int status = 0;
340 int i;
341
342 for (i = 0; i < length; i++) {
343 status = ti_vread_sync(serial->serial->dev,
344 UMPC_MEMORY_READ, serial->TI_I2C_Type,
345 (__u16)(start_address+i), &buffer[i], 0x01);
346 if (status) {
347 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
348 return status;
349 }
350 }
351
352 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
353 __func__, start_address, length);
354 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
355
356 serial->TiReadI2C = 1;
357
358 return status;
359 }
360
361 /* Write given block to TI EPROM memory */
362 static int write_boot_mem(struct edgeport_serial *serial,
363 int start_address, int length, __u8 *buffer)
364 {
365 int status = 0;
366 int i;
367 u8 *temp;
368
369 /* Must do a read before write */
370 if (!serial->TiReadI2C) {
371 temp = kmalloc(1, GFP_KERNEL);
372 if (!temp) {
373 dev_err(&serial->serial->dev->dev,
374 "%s - out of memory\n", __func__);
375 return -ENOMEM;
376 }
377 status = read_boot_mem(serial, 0, 1, temp);
378 kfree(temp);
379 if (status)
380 return status;
381 }
382
383 for (i = 0; i < length; ++i) {
384 status = ti_vsend_sync(serial->serial->dev,
385 UMPC_MEMORY_WRITE, buffer[i],
386 (__u16)(i + start_address), NULL, 0);
387 if (status)
388 return status;
389 }
390
391 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
392 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
393
394 return status;
395 }
396
397
398 /* Write edgeport I2C memory to TI chip */
399 static int write_i2c_mem(struct edgeport_serial *serial,
400 int start_address, int length, __u8 address_type, __u8 *buffer)
401 {
402 struct device *dev = &serial->serial->dev->dev;
403 int status = 0;
404 int write_length;
405 u16 be_start_address;
406
407 /* We can only send a maximum of 1 aligned byte page at a time */
408
409 /* calculate the number of bytes left in the first page */
410 write_length = EPROM_PAGE_SIZE -
411 (start_address & (EPROM_PAGE_SIZE - 1));
412
413 if (write_length > length)
414 write_length = length;
415
416 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
417 __func__, start_address, write_length);
418 usb_serial_debug_data(dev, __func__, write_length, buffer);
419
420 /*
421 * Write first page.
422 *
423 * NOTE: Must use swab as wIndex is sent in little-endian byte order
424 * regardless of host byte order.
425 */
426 be_start_address = swab16((u16)start_address);
427 status = ti_vsend_sync(serial->serial->dev,
428 UMPC_MEMORY_WRITE, (__u16)address_type,
429 be_start_address,
430 buffer, write_length);
431 if (status) {
432 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
433 return status;
434 }
435
436 length -= write_length;
437 start_address += write_length;
438 buffer += write_length;
439
440 /* We should be aligned now -- can write
441 max page size bytes at a time */
442 while (length) {
443 if (length > EPROM_PAGE_SIZE)
444 write_length = EPROM_PAGE_SIZE;
445 else
446 write_length = length;
447
448 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
449 __func__, start_address, write_length);
450 usb_serial_debug_data(dev, __func__, write_length, buffer);
451
452 /*
453 * Write next page.
454 *
455 * NOTE: Must use swab as wIndex is sent in little-endian byte
456 * order regardless of host byte order.
457 */
458 be_start_address = swab16((u16)start_address);
459 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
460 (__u16)address_type,
461 be_start_address,
462 buffer, write_length);
463 if (status) {
464 dev_err(dev, "%s - ERROR %d\n", __func__, status);
465 return status;
466 }
467
468 length -= write_length;
469 start_address += write_length;
470 buffer += write_length;
471 }
472 return status;
473 }
474
475 /* Examine the UMP DMA registers and LSR
476 *
477 * Check the MSBit of the X and Y DMA byte count registers.
478 * A zero in this bit indicates that the TX DMA buffers are empty
479 * then check the TX Empty bit in the UART.
480 */
481 static int tx_active(struct edgeport_port *port)
482 {
483 int status;
484 struct out_endpoint_desc_block *oedb;
485 __u8 *lsr;
486 int bytes_left = 0;
487
488 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
489 if (!oedb) {
490 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
491 return -ENOMEM;
492 }
493
494 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
495 as not all platforms can do DMA
496 from stack */
497 if (!lsr) {
498 kfree(oedb);
499 return -ENOMEM;
500 }
501 /* Read the DMA Count Registers */
502 status = read_ram(port->port->serial->dev, port->dma_address,
503 sizeof(*oedb), (void *)oedb);
504 if (status)
505 goto exit_is_tx_active;
506
507 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
508
509 /* and the LSR */
510 status = read_ram(port->port->serial->dev,
511 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
512
513 if (status)
514 goto exit_is_tx_active;
515 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
516
517 /* If either buffer has data or we are transmitting then return TRUE */
518 if ((oedb->XByteCount & 0x80) != 0)
519 bytes_left += 64;
520
521 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
522 bytes_left += 1;
523
524 /* We return Not Active if we get any kind of error */
525 exit_is_tx_active:
526 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
527
528 kfree(lsr);
529 kfree(oedb);
530 return bytes_left;
531 }
532
533 static int choose_config(struct usb_device *dev)
534 {
535 /*
536 * There may be multiple configurations on this device, in which case
537 * we would need to read and parse all of them to find out which one
538 * we want. However, we just support one config at this point,
539 * configuration # 1, which is Config Descriptor 0.
540 */
541
542 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
543 __func__, dev->config->desc.bNumInterfaces);
544 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
545 __func__, dev->config->desc.bMaxPower * 2);
546
547 if (dev->config->desc.bNumInterfaces != 1) {
548 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
549 return -ENODEV;
550 }
551
552 return 0;
553 }
554
555 static int read_rom(struct edgeport_serial *serial,
556 int start_address, int length, __u8 *buffer)
557 {
558 int status;
559
560 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
561 status = read_download_mem(serial->serial->dev,
562 start_address,
563 length,
564 serial->TI_I2C_Type,
565 buffer);
566 } else {
567 status = read_boot_mem(serial, start_address, length,
568 buffer);
569 }
570 return status;
571 }
572
573 static int write_rom(struct edgeport_serial *serial, int start_address,
574 int length, __u8 *buffer)
575 {
576 if (serial->product_info.TiMode == TI_MODE_BOOT)
577 return write_boot_mem(serial, start_address, length,
578 buffer);
579
580 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
581 return write_i2c_mem(serial, start_address, length,
582 serial->TI_I2C_Type, buffer);
583 return -EINVAL;
584 }
585
586
587
588 /* Read a descriptor header from I2C based on type */
589 static int get_descriptor_addr(struct edgeport_serial *serial,
590 int desc_type, struct ti_i2c_desc *rom_desc)
591 {
592 int start_address;
593 int status;
594
595 /* Search for requested descriptor in I2C */
596 start_address = 2;
597 do {
598 status = read_rom(serial,
599 start_address,
600 sizeof(struct ti_i2c_desc),
601 (__u8 *)rom_desc);
602 if (status)
603 return 0;
604
605 if (rom_desc->Type == desc_type)
606 return start_address;
607
608 start_address = start_address + sizeof(struct ti_i2c_desc) +
609 le16_to_cpu(rom_desc->Size);
610
611 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
612
613 return 0;
614 }
615
616 /* Validate descriptor checksum */
617 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
618 {
619 __u16 i;
620 __u8 cs = 0;
621
622 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
623 cs = (__u8)(cs + buffer[i]);
624
625 if (cs != rom_desc->CheckSum) {
626 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
627 return -EINVAL;
628 }
629 return 0;
630 }
631
632 /* Make sure that the I2C image is good */
633 static int check_i2c_image(struct edgeport_serial *serial)
634 {
635 struct device *dev = &serial->serial->dev->dev;
636 int status = 0;
637 struct ti_i2c_desc *rom_desc;
638 int start_address = 2;
639 __u8 *buffer;
640 __u16 ttype;
641
642 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
643 if (!rom_desc) {
644 dev_err(dev, "%s - out of memory\n", __func__);
645 return -ENOMEM;
646 }
647 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
648 if (!buffer) {
649 dev_err(dev, "%s - out of memory when allocating buffer\n",
650 __func__);
651 kfree(rom_desc);
652 return -ENOMEM;
653 }
654
655 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
656 status = read_rom(serial, 0, 1, buffer);
657 if (status)
658 goto out;
659
660 if (*buffer != UMP5152 && *buffer != UMP3410) {
661 dev_err(dev, "%s - invalid buffer signature\n", __func__);
662 status = -ENODEV;
663 goto out;
664 }
665
666 do {
667 /* Validate the I2C */
668 status = read_rom(serial,
669 start_address,
670 sizeof(struct ti_i2c_desc),
671 (__u8 *)rom_desc);
672 if (status)
673 break;
674
675 if ((start_address + sizeof(struct ti_i2c_desc) +
676 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
677 status = -ENODEV;
678 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
679 break;
680 }
681
682 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
683
684 /* Skip type 2 record */
685 ttype = rom_desc->Type & 0x0f;
686 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
687 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
688 /* Read the descriptor data */
689 status = read_rom(serial, start_address +
690 sizeof(struct ti_i2c_desc),
691 le16_to_cpu(rom_desc->Size),
692 buffer);
693 if (status)
694 break;
695
696 status = valid_csum(rom_desc, buffer);
697 if (status)
698 break;
699 }
700 start_address = start_address + sizeof(struct ti_i2c_desc) +
701 le16_to_cpu(rom_desc->Size);
702
703 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
704 (start_address < TI_MAX_I2C_SIZE));
705
706 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
707 (start_address > TI_MAX_I2C_SIZE))
708 status = -ENODEV;
709
710 out:
711 kfree(buffer);
712 kfree(rom_desc);
713 return status;
714 }
715
716 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
717 {
718 int status;
719 int start_address;
720 struct ti_i2c_desc *rom_desc;
721 struct edge_ti_manuf_descriptor *desc;
722 struct device *dev = &serial->serial->dev->dev;
723
724 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
725 if (!rom_desc) {
726 dev_err(dev, "%s - out of memory\n", __func__);
727 return -ENOMEM;
728 }
729 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
730 rom_desc);
731
732 if (!start_address) {
733 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
734 status = -ENODEV;
735 goto exit;
736 }
737
738 /* Read the descriptor data */
739 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
740 le16_to_cpu(rom_desc->Size), buffer);
741 if (status)
742 goto exit;
743
744 status = valid_csum(rom_desc, buffer);
745
746 desc = (struct edge_ti_manuf_descriptor *)buffer;
747 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
748 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
749 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
750 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
751 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
752 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
753
754 exit:
755 kfree(rom_desc);
756 return status;
757 }
758
759 /* Build firmware header used for firmware update */
760 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
761 {
762 __u8 *buffer;
763 int buffer_size;
764 int i;
765 int err;
766 __u8 cs = 0;
767 struct ti_i2c_desc *i2c_header;
768 struct ti_i2c_image_header *img_header;
769 struct ti_i2c_firmware_rec *firmware_rec;
770 const struct firmware *fw;
771 const char *fw_name = "edgeport/down3.bin";
772
773 /* In order to update the I2C firmware we must change the type 2 record
774 * to type 0xF2. This will force the UMP to come up in Boot Mode.
775 * Then while in boot mode, the driver will download the latest
776 * firmware (padded to 15.5k) into the UMP ram. And finally when the
777 * device comes back up in download mode the driver will cause the new
778 * firmware to be copied from the UMP Ram to I2C and the firmware will
779 * update the record type from 0xf2 to 0x02.
780 */
781
782 /* Allocate a 15.5k buffer + 2 bytes for version number
783 * (Firmware Record) */
784 buffer_size = (((1024 * 16) - 512 ) +
785 sizeof(struct ti_i2c_firmware_rec));
786
787 buffer = kmalloc(buffer_size, GFP_KERNEL);
788 if (!buffer) {
789 dev_err(dev, "%s - out of memory\n", __func__);
790 return -ENOMEM;
791 }
792
793 // Set entire image of 0xffs
794 memset(buffer, 0xff, buffer_size);
795
796 err = request_firmware(&fw, fw_name, dev);
797 if (err) {
798 dev_err(dev, "Failed to load image \"%s\" err %d\n",
799 fw_name, err);
800 kfree(buffer);
801 return err;
802 }
803
804 /* Save Download Version Number */
805 OperationalMajorVersion = fw->data[0];
806 OperationalMinorVersion = fw->data[1];
807 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
808
809 /* Copy version number into firmware record */
810 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
811
812 firmware_rec->Ver_Major = OperationalMajorVersion;
813 firmware_rec->Ver_Minor = OperationalMinorVersion;
814
815 /* Pointer to fw_down memory image */
816 img_header = (struct ti_i2c_image_header *)&fw->data[4];
817
818 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
819 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
820 le16_to_cpu(img_header->Length));
821
822 release_firmware(fw);
823
824 for (i=0; i < buffer_size; i++) {
825 cs = (__u8)(cs + buffer[i]);
826 }
827
828 kfree(buffer);
829
830 /* Build new header */
831 i2c_header = (struct ti_i2c_desc *)header;
832 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
833
834 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
835 i2c_header->Size = cpu_to_le16(buffer_size);
836 i2c_header->CheckSum = cs;
837 firmware_rec->Ver_Major = OperationalMajorVersion;
838 firmware_rec->Ver_Minor = OperationalMinorVersion;
839
840 return 0;
841 }
842
843 /* Try to figure out what type of I2c we have */
844 static int i2c_type_bootmode(struct edgeport_serial *serial)
845 {
846 struct device *dev = &serial->serial->dev->dev;
847 int status;
848 u8 *data;
849
850 data = kmalloc(1, GFP_KERNEL);
851 if (!data) {
852 dev_err(dev, "%s - out of memory\n", __func__);
853 return -ENOMEM;
854 }
855
856 /* Try to read type 2 */
857 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
858 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
859 if (status)
860 dev_dbg(dev, "%s - read 2 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_II\n", __func__);
865 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
866 goto out;
867 }
868
869 /* Try to read type 3 */
870 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
871 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
872 if (status)
873 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
874 else
875 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
876 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
877 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
878 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
879 goto out;
880 }
881
882 dev_dbg(dev, "%s - Unknown\n", __func__);
883 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
884 status = -ENODEV;
885 out:
886 kfree(data);
887 return status;
888 }
889
890 static int bulk_xfer(struct usb_serial *serial, void *buffer,
891 int length, int *num_sent)
892 {
893 int status;
894
895 status = usb_bulk_msg(serial->dev,
896 usb_sndbulkpipe(serial->dev,
897 serial->port[0]->bulk_out_endpointAddress),
898 buffer, length, num_sent, 1000);
899 return status;
900 }
901
902 /* Download given firmware image to the device (IN BOOT MODE) */
903 static int download_code(struct edgeport_serial *serial, __u8 *image,
904 int image_length)
905 {
906 int status = 0;
907 int pos;
908 int transfer;
909 int done;
910
911 /* Transfer firmware image */
912 for (pos = 0; pos < image_length; ) {
913 /* Read the next buffer from file */
914 transfer = image_length - pos;
915 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
916 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
917
918 /* Transfer data */
919 status = bulk_xfer(serial->serial, &image[pos],
920 transfer, &done);
921 if (status)
922 break;
923 /* Advance buffer pointer */
924 pos += done;
925 }
926
927 return status;
928 }
929
930 /* FIXME!!! */
931 static int config_boot_dev(struct usb_device *dev)
932 {
933 return 0;
934 }
935
936 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
937 {
938 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
939 }
940
941 /**
942 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
943 *
944 * This routine downloads the main operating code into the TI5052, using the
945 * boot code already burned into E2PROM or ROM.
946 */
947 static int download_fw(struct edgeport_serial *serial)
948 {
949 struct device *dev = &serial->serial->dev->dev;
950 int status = 0;
951 int start_address;
952 struct edge_ti_manuf_descriptor *ti_manuf_desc;
953 struct usb_interface_descriptor *interface;
954 int download_cur_ver;
955 int download_new_ver;
956
957 /* This routine is entered by both the BOOT mode and the Download mode
958 * We can determine which code is running by the reading the config
959 * descriptor and if we have only one bulk pipe it is in boot mode
960 */
961 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
962
963 /* Default to type 2 i2c */
964 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
965
966 status = choose_config(serial->serial->dev);
967 if (status)
968 return status;
969
970 interface = &serial->serial->interface->cur_altsetting->desc;
971 if (!interface) {
972 dev_err(dev, "%s - no interface set, error!\n", __func__);
973 return -ENODEV;
974 }
975
976 /*
977 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
978 * if we have more than one endpoint we are definitely in download
979 * mode
980 */
981 if (interface->bNumEndpoints > 1)
982 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
983 else
984 /* Otherwise we will remain in configuring mode */
985 serial->product_info.TiMode = TI_MODE_CONFIGURING;
986
987 /********************************************************************/
988 /* Download Mode */
989 /********************************************************************/
990 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
991 struct ti_i2c_desc *rom_desc;
992
993 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
994
995 status = check_i2c_image(serial);
996 if (status) {
997 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
998 return status;
999 }
1000
1001 /* Validate Hardware version number
1002 * Read Manufacturing Descriptor from TI Based Edgeport
1003 */
1004 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1005 if (!ti_manuf_desc) {
1006 dev_err(dev, "%s - out of memory.\n", __func__);
1007 return -ENOMEM;
1008 }
1009 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1010 if (status) {
1011 kfree(ti_manuf_desc);
1012 return status;
1013 }
1014
1015 /* Check version number of ION descriptor */
1016 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1017 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1018 __func__, ti_cpu_rev(ti_manuf_desc));
1019 kfree(ti_manuf_desc);
1020 return -EINVAL;
1021 }
1022
1023 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1024 if (!rom_desc) {
1025 dev_err(dev, "%s - out of memory.\n", __func__);
1026 kfree(ti_manuf_desc);
1027 return -ENOMEM;
1028 }
1029
1030 /* Search for type 2 record (firmware record) */
1031 start_address = get_descriptor_addr(serial,
1032 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1033 if (start_address != 0) {
1034 struct ti_i2c_firmware_rec *firmware_version;
1035 u8 *record;
1036
1037 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1038
1039 firmware_version = kmalloc(sizeof(*firmware_version),
1040 GFP_KERNEL);
1041 if (!firmware_version) {
1042 dev_err(dev, "%s - out of memory.\n", __func__);
1043 kfree(rom_desc);
1044 kfree(ti_manuf_desc);
1045 return -ENOMEM;
1046 }
1047
1048 /* Validate version number
1049 * Read the descriptor data
1050 */
1051 status = read_rom(serial, start_address +
1052 sizeof(struct ti_i2c_desc),
1053 sizeof(struct ti_i2c_firmware_rec),
1054 (__u8 *)firmware_version);
1055 if (status) {
1056 kfree(firmware_version);
1057 kfree(rom_desc);
1058 kfree(ti_manuf_desc);
1059 return status;
1060 }
1061
1062 /* Check version number of download with current
1063 version in I2c */
1064 download_cur_ver = (firmware_version->Ver_Major << 8) +
1065 (firmware_version->Ver_Minor);
1066 download_new_ver = (OperationalMajorVersion << 8) +
1067 (OperationalMinorVersion);
1068
1069 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1070 __func__, firmware_version->Ver_Major,
1071 firmware_version->Ver_Minor,
1072 OperationalMajorVersion,
1073 OperationalMinorVersion);
1074
1075 /* Check if we have an old version in the I2C and
1076 update if necessary */
1077 if (download_cur_ver < download_new_ver) {
1078 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1079 __func__,
1080 firmware_version->Ver_Major,
1081 firmware_version->Ver_Minor,
1082 OperationalMajorVersion,
1083 OperationalMinorVersion);
1084
1085 record = kmalloc(1, GFP_KERNEL);
1086 if (!record) {
1087 dev_err(dev, "%s - out of memory.\n",
1088 __func__);
1089 kfree(firmware_version);
1090 kfree(rom_desc);
1091 kfree(ti_manuf_desc);
1092 return -ENOMEM;
1093 }
1094 /* In order to update the I2C firmware we must
1095 * change the type 2 record to type 0xF2. This
1096 * will force the UMP to come up in Boot Mode.
1097 * Then while in boot mode, the driver will
1098 * download the latest firmware (padded to
1099 * 15.5k) into the UMP ram. Finally when the
1100 * device comes back up in download mode the
1101 * driver will cause the new firmware to be
1102 * copied from the UMP Ram to I2C and the
1103 * firmware will update the record type from
1104 * 0xf2 to 0x02.
1105 */
1106 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1107
1108 /* Change the I2C Firmware record type to
1109 0xf2 to trigger an update */
1110 status = write_rom(serial, start_address,
1111 sizeof(*record), record);
1112 if (status) {
1113 kfree(record);
1114 kfree(firmware_version);
1115 kfree(rom_desc);
1116 kfree(ti_manuf_desc);
1117 return status;
1118 }
1119
1120 /* verify the write -- must do this in order
1121 * for write to complete before we do the
1122 * hardware reset
1123 */
1124 status = read_rom(serial,
1125 start_address,
1126 sizeof(*record),
1127 record);
1128 if (status) {
1129 kfree(record);
1130 kfree(firmware_version);
1131 kfree(rom_desc);
1132 kfree(ti_manuf_desc);
1133 return status;
1134 }
1135
1136 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1137 dev_err(dev, "%s - error resetting device\n", __func__);
1138 kfree(record);
1139 kfree(firmware_version);
1140 kfree(rom_desc);
1141 kfree(ti_manuf_desc);
1142 return -ENODEV;
1143 }
1144
1145 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1146
1147 /* Reset UMP -- Back to BOOT MODE */
1148 status = ti_vsend_sync(serial->serial->dev,
1149 UMPC_HARDWARE_RESET,
1150 0, 0, NULL, 0);
1151
1152 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1153
1154 /* return an error on purpose. */
1155 kfree(record);
1156 kfree(firmware_version);
1157 kfree(rom_desc);
1158 kfree(ti_manuf_desc);
1159 return -ENODEV;
1160 }
1161 kfree(firmware_version);
1162 }
1163 /* Search for type 0xF2 record (firmware blank record) */
1164 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1165 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1166 sizeof(struct ti_i2c_firmware_rec))
1167 __u8 *header;
1168 __u8 *vheader;
1169
1170 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1171 if (!header) {
1172 dev_err(dev, "%s - out of memory.\n", __func__);
1173 kfree(rom_desc);
1174 kfree(ti_manuf_desc);
1175 return -ENOMEM;
1176 }
1177
1178 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1179 if (!vheader) {
1180 dev_err(dev, "%s - out of memory.\n", __func__);
1181 kfree(header);
1182 kfree(rom_desc);
1183 kfree(ti_manuf_desc);
1184 return -ENOMEM;
1185 }
1186
1187 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1188
1189 /*
1190 * In order to update the I2C firmware we must change
1191 * the type 2 record to type 0xF2. This will force the
1192 * UMP to come up in Boot Mode. Then while in boot
1193 * mode, the driver will download the latest firmware
1194 * (padded to 15.5k) into the UMP ram. Finally when the
1195 * device comes back up in download mode the driver
1196 * will cause the new firmware to be copied from the
1197 * UMP Ram to I2C and the firmware will update the
1198 * record type from 0xf2 to 0x02.
1199 */
1200 status = build_i2c_fw_hdr(header, dev);
1201 if (status) {
1202 kfree(vheader);
1203 kfree(header);
1204 kfree(rom_desc);
1205 kfree(ti_manuf_desc);
1206 return -EINVAL;
1207 }
1208
1209 /* Update I2C with type 0xf2 record with correct
1210 size and checksum */
1211 status = write_rom(serial,
1212 start_address,
1213 HEADER_SIZE,
1214 header);
1215 if (status) {
1216 kfree(vheader);
1217 kfree(header);
1218 kfree(rom_desc);
1219 kfree(ti_manuf_desc);
1220 return -EINVAL;
1221 }
1222
1223 /* verify the write -- must do this in order for
1224 write to complete before we do the hardware reset */
1225 status = read_rom(serial, start_address,
1226 HEADER_SIZE, vheader);
1227
1228 if (status) {
1229 dev_dbg(dev, "%s - can't read header back\n", __func__);
1230 kfree(vheader);
1231 kfree(header);
1232 kfree(rom_desc);
1233 kfree(ti_manuf_desc);
1234 return status;
1235 }
1236 if (memcmp(vheader, header, HEADER_SIZE)) {
1237 dev_dbg(dev, "%s - write download record failed\n", __func__);
1238 kfree(vheader);
1239 kfree(header);
1240 kfree(rom_desc);
1241 kfree(ti_manuf_desc);
1242 return -EINVAL;
1243 }
1244
1245 kfree(vheader);
1246 kfree(header);
1247
1248 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1249
1250 /* Tell firmware to copy download image into I2C */
1251 status = ti_vsend_sync(serial->serial->dev,
1252 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1253
1254 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1255 if (status) {
1256 dev_err(dev,
1257 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1258 __func__);
1259 kfree(rom_desc);
1260 kfree(ti_manuf_desc);
1261 return status;
1262 }
1263 }
1264
1265 // The device is running the download code
1266 kfree(rom_desc);
1267 kfree(ti_manuf_desc);
1268 return 0;
1269 }
1270
1271 /********************************************************************/
1272 /* Boot Mode */
1273 /********************************************************************/
1274 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1275
1276 /* Configure the TI device so we can use the BULK pipes for download */
1277 status = config_boot_dev(serial->serial->dev);
1278 if (status)
1279 return status;
1280
1281 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1282 != USB_VENDOR_ID_ION) {
1283 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1284 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1285 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1286 goto stayinbootmode;
1287 }
1288
1289 /* We have an ION device (I2c Must be programmed)
1290 Determine I2C image type */
1291 if (i2c_type_bootmode(serial))
1292 goto stayinbootmode;
1293
1294 /* Check for ION Vendor ID and that the I2C is valid */
1295 if (!check_i2c_image(serial)) {
1296 struct ti_i2c_image_header *header;
1297 int i;
1298 __u8 cs = 0;
1299 __u8 *buffer;
1300 int buffer_size;
1301 int err;
1302 const struct firmware *fw;
1303 const char *fw_name = "edgeport/down3.bin";
1304
1305 /* Validate Hardware version number
1306 * Read Manufacturing Descriptor from TI Based Edgeport
1307 */
1308 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1309 if (!ti_manuf_desc) {
1310 dev_err(dev, "%s - out of memory.\n", __func__);
1311 return -ENOMEM;
1312 }
1313 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1314 if (status) {
1315 kfree(ti_manuf_desc);
1316 goto stayinbootmode;
1317 }
1318
1319 /* Check for version 2 */
1320 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1321 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1322 __func__, ti_cpu_rev(ti_manuf_desc));
1323 kfree(ti_manuf_desc);
1324 goto stayinbootmode;
1325 }
1326
1327 kfree(ti_manuf_desc);
1328
1329 /*
1330 * In order to update the I2C firmware we must change the type
1331 * 2 record to type 0xF2. This will force the UMP to come up
1332 * in Boot Mode. Then while in boot mode, the driver will
1333 * download the latest firmware (padded to 15.5k) into the
1334 * UMP ram. Finally when the device comes back up in download
1335 * mode the driver will cause the new firmware to be copied
1336 * from the UMP Ram to I2C and the firmware will update the
1337 * record type from 0xf2 to 0x02.
1338 *
1339 * Do we really have to copy the whole firmware image,
1340 * or could we do this in place!
1341 */
1342
1343 /* Allocate a 15.5k buffer + 3 byte header */
1344 buffer_size = (((1024 * 16) - 512) +
1345 sizeof(struct ti_i2c_image_header));
1346 buffer = kmalloc(buffer_size, GFP_KERNEL);
1347 if (!buffer) {
1348 dev_err(dev, "%s - out of memory\n", __func__);
1349 return -ENOMEM;
1350 }
1351
1352 /* Initialize the buffer to 0xff (pad the buffer) */
1353 memset(buffer, 0xff, buffer_size);
1354
1355 err = request_firmware(&fw, fw_name, dev);
1356 if (err) {
1357 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1358 fw_name, err);
1359 kfree(buffer);
1360 return err;
1361 }
1362 memcpy(buffer, &fw->data[4], fw->size - 4);
1363 release_firmware(fw);
1364
1365 for (i = sizeof(struct ti_i2c_image_header);
1366 i < buffer_size; i++) {
1367 cs = (__u8)(cs + buffer[i]);
1368 }
1369
1370 header = (struct ti_i2c_image_header *)buffer;
1371
1372 /* update length and checksum after padding */
1373 header->Length = cpu_to_le16((__u16)(buffer_size -
1374 sizeof(struct ti_i2c_image_header)));
1375 header->CheckSum = cs;
1376
1377 /* Download the operational code */
1378 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1379 status = download_code(serial, buffer, buffer_size);
1380
1381 kfree(buffer);
1382
1383 if (status) {
1384 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1385 return status;
1386 }
1387
1388 /* Device will reboot */
1389 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1390
1391 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1392
1393 /* return an error on purpose */
1394 return -ENODEV;
1395 }
1396
1397 stayinbootmode:
1398 /* Eprom is invalid or blank stay in boot mode */
1399 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1400 serial->product_info.TiMode = TI_MODE_BOOT;
1401
1402 return 0;
1403 }
1404
1405
1406 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1407 {
1408 int port_number = port->port->port_number;
1409
1410 on = !!on; /* 1 or 0 not bitmask */
1411 return send_cmd(port->port->serial->dev,
1412 feature, (__u8)(UMPM_UART1_PORT + port_number),
1413 on, NULL, 0);
1414 }
1415
1416
1417 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1418 {
1419 int status = 0;
1420
1421 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1422
1423 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1424 if (status)
1425 return status;
1426 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1427 if (status)
1428 return status;
1429 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1430 }
1431
1432 /* Convert TI LSR to standard UART flags */
1433 static __u8 map_line_status(__u8 ti_lsr)
1434 {
1435 __u8 lsr = 0;
1436
1437 #define MAP_FLAG(flagUmp, flagUart) \
1438 if (ti_lsr & flagUmp) \
1439 lsr |= flagUart;
1440
1441 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1442 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1443 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1444 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1445 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1446 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1447
1448 #undef MAP_FLAG
1449
1450 return lsr;
1451 }
1452
1453 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1454 {
1455 struct async_icount *icount;
1456 struct tty_struct *tty;
1457
1458 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1459
1460 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1461 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1462 icount = &edge_port->port->icount;
1463
1464 /* update input line counters */
1465 if (msr & EDGEPORT_MSR_DELTA_CTS)
1466 icount->cts++;
1467 if (msr & EDGEPORT_MSR_DELTA_DSR)
1468 icount->dsr++;
1469 if (msr & EDGEPORT_MSR_DELTA_CD)
1470 icount->dcd++;
1471 if (msr & EDGEPORT_MSR_DELTA_RI)
1472 icount->rng++;
1473 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1474 }
1475
1476 /* Save the new modem status */
1477 edge_port->shadow_msr = msr & 0xf0;
1478
1479 tty = tty_port_tty_get(&edge_port->port->port);
1480 /* handle CTS flow control */
1481 if (tty && C_CRTSCTS(tty)) {
1482 if (msr & EDGEPORT_MSR_CTS) {
1483 tty->hw_stopped = 0;
1484 tty_wakeup(tty);
1485 } else {
1486 tty->hw_stopped = 1;
1487 }
1488 }
1489 tty_kref_put(tty);
1490 }
1491
1492 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1493 __u8 lsr, __u8 data)
1494 {
1495 struct async_icount *icount;
1496 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1497 LSR_FRM_ERR | LSR_BREAK));
1498
1499 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1500
1501 edge_port->shadow_lsr = lsr;
1502
1503 if (new_lsr & LSR_BREAK)
1504 /*
1505 * Parity and Framing errors only count if they
1506 * occur exclusive of a break being received.
1507 */
1508 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1509
1510 /* Place LSR data byte into Rx buffer */
1511 if (lsr_data)
1512 edge_tty_recv(edge_port->port, &data, 1);
1513
1514 /* update input line counters */
1515 icount = &edge_port->port->icount;
1516 if (new_lsr & LSR_BREAK)
1517 icount->brk++;
1518 if (new_lsr & LSR_OVER_ERR)
1519 icount->overrun++;
1520 if (new_lsr & LSR_PAR_ERR)
1521 icount->parity++;
1522 if (new_lsr & LSR_FRM_ERR)
1523 icount->frame++;
1524 }
1525
1526
1527 static void edge_interrupt_callback(struct urb *urb)
1528 {
1529 struct edgeport_serial *edge_serial = urb->context;
1530 struct usb_serial_port *port;
1531 struct edgeport_port *edge_port;
1532 struct device *dev;
1533 unsigned char *data = urb->transfer_buffer;
1534 int length = urb->actual_length;
1535 int port_number;
1536 int function;
1537 int retval;
1538 __u8 lsr;
1539 __u8 msr;
1540 int status = urb->status;
1541
1542 switch (status) {
1543 case 0:
1544 /* success */
1545 break;
1546 case -ECONNRESET:
1547 case -ENOENT:
1548 case -ESHUTDOWN:
1549 /* this urb is terminated, clean up */
1550 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1551 __func__, status);
1552 return;
1553 default:
1554 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1555 "%d\n", __func__, status);
1556 goto exit;
1557 }
1558
1559 if (!length) {
1560 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1561 goto exit;
1562 }
1563
1564 dev = &edge_serial->serial->dev->dev;
1565 usb_serial_debug_data(dev, __func__, length, data);
1566
1567 if (length != 2) {
1568 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1569 goto exit;
1570 }
1571
1572 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1573 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1574 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1575 port_number, function, data[1]);
1576 port = edge_serial->serial->port[port_number];
1577 edge_port = usb_get_serial_port_data(port);
1578 if (!edge_port) {
1579 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1580 return;
1581 }
1582 switch (function) {
1583 case TIUMP_INTERRUPT_CODE_LSR:
1584 lsr = map_line_status(data[1]);
1585 if (lsr & UMP_UART_LSR_DATA_MASK) {
1586 /* Save the LSR event for bulk read
1587 completion routine */
1588 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1589 __func__, port_number, lsr);
1590 edge_port->lsr_event = 1;
1591 edge_port->lsr_mask = lsr;
1592 } else {
1593 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1594 __func__, port_number, lsr);
1595 handle_new_lsr(edge_port, 0, lsr, 0);
1596 }
1597 break;
1598
1599 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1600 /* Copy MSR from UMP */
1601 msr = data[1];
1602 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1603 __func__, port_number, msr);
1604 handle_new_msr(edge_port, msr);
1605 break;
1606
1607 default:
1608 dev_err(&urb->dev->dev,
1609 "%s - Unknown Interrupt code from UMP %x\n",
1610 __func__, data[1]);
1611 break;
1612
1613 }
1614
1615 exit:
1616 retval = usb_submit_urb(urb, GFP_ATOMIC);
1617 if (retval)
1618 dev_err(&urb->dev->dev,
1619 "%s - usb_submit_urb failed with result %d\n",
1620 __func__, retval);
1621 }
1622
1623 static void edge_bulk_in_callback(struct urb *urb)
1624 {
1625 struct edgeport_port *edge_port = urb->context;
1626 struct device *dev = &edge_port->port->dev;
1627 unsigned char *data = urb->transfer_buffer;
1628 int retval = 0;
1629 int port_number;
1630 int status = urb->status;
1631
1632 switch (status) {
1633 case 0:
1634 /* success */
1635 break;
1636 case -ECONNRESET:
1637 case -ENOENT:
1638 case -ESHUTDOWN:
1639 /* this urb is terminated, clean up */
1640 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1641 return;
1642 default:
1643 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1644 }
1645
1646 if (status == -EPIPE)
1647 goto exit;
1648
1649 if (status) {
1650 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1651 return;
1652 }
1653
1654 port_number = edge_port->port->port_number;
1655
1656 if (edge_port->lsr_event) {
1657 edge_port->lsr_event = 0;
1658 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1659 __func__, port_number, edge_port->lsr_mask, *data);
1660 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1661 /* Adjust buffer length/pointer */
1662 --urb->actual_length;
1663 ++data;
1664 }
1665
1666 if (urb->actual_length) {
1667 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1668 if (edge_port->close_pending)
1669 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1670 __func__);
1671 else
1672 edge_tty_recv(edge_port->port, data,
1673 urb->actual_length);
1674 edge_port->port->icount.rx += urb->actual_length;
1675 }
1676
1677 exit:
1678 /* continue read unless stopped */
1679 spin_lock(&edge_port->ep_lock);
1680 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1681 retval = usb_submit_urb(urb, GFP_ATOMIC);
1682 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1683 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1684
1685 spin_unlock(&edge_port->ep_lock);
1686 if (retval)
1687 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1688 }
1689
1690 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1691 int length)
1692 {
1693 int queued;
1694
1695 queued = tty_insert_flip_string(&port->port, data, length);
1696 if (queued < length)
1697 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1698 __func__, length - queued);
1699 tty_flip_buffer_push(&port->port);
1700 }
1701
1702 static void edge_bulk_out_callback(struct urb *urb)
1703 {
1704 struct usb_serial_port *port = urb->context;
1705 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1706 int status = urb->status;
1707 struct tty_struct *tty;
1708
1709 edge_port->ep_write_urb_in_use = 0;
1710
1711 switch (status) {
1712 case 0:
1713 /* success */
1714 break;
1715 case -ECONNRESET:
1716 case -ENOENT:
1717 case -ESHUTDOWN:
1718 /* this urb is terminated, clean up */
1719 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1720 __func__, status);
1721 return;
1722 default:
1723 dev_err_console(port, "%s - nonzero write bulk status "
1724 "received: %d\n", __func__, status);
1725 }
1726
1727 /* send any buffered data */
1728 tty = tty_port_tty_get(&port->port);
1729 edge_send(port, tty);
1730 tty_kref_put(tty);
1731 }
1732
1733 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1734 {
1735 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1736 struct edgeport_serial *edge_serial;
1737 struct usb_device *dev;
1738 struct urb *urb;
1739 int port_number;
1740 int status;
1741 u16 open_settings;
1742 u8 transaction_timeout;
1743
1744 if (edge_port == NULL)
1745 return -ENODEV;
1746
1747 port_number = port->port_number;
1748
1749 dev = port->serial->dev;
1750
1751 /* turn off loopback */
1752 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1753 if (status) {
1754 dev_err(&port->dev,
1755 "%s - cannot send clear loopback command, %d\n",
1756 __func__, status);
1757 return status;
1758 }
1759
1760 /* set up the port settings */
1761 if (tty)
1762 edge_set_termios(tty, port, &tty->termios);
1763
1764 /* open up the port */
1765
1766 /* milliseconds to timeout for DMA transfer */
1767 transaction_timeout = 2;
1768
1769 edge_port->ump_read_timeout =
1770 max(20, ((transaction_timeout * 3) / 2));
1771
1772 /* milliseconds to timeout for DMA transfer */
1773 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1774 UMP_PIPE_TRANS_TIMEOUT_ENA |
1775 (transaction_timeout << 2));
1776
1777 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1778
1779 /* Tell TI to open and start the port */
1780 status = send_cmd(dev, UMPC_OPEN_PORT,
1781 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1782 if (status) {
1783 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1784 __func__, status);
1785 return status;
1786 }
1787
1788 /* Start the DMA? */
1789 status = send_cmd(dev, UMPC_START_PORT,
1790 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1791 if (status) {
1792 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1793 __func__, status);
1794 return status;
1795 }
1796
1797 /* Clear TX and RX buffers in UMP */
1798 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1799 if (status) {
1800 dev_err(&port->dev,
1801 "%s - cannot send clear buffers command, %d\n",
1802 __func__, status);
1803 return status;
1804 }
1805
1806 /* Read Initial MSR */
1807 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1808 (__u16)(UMPM_UART1_PORT + port_number),
1809 &edge_port->shadow_msr, 1);
1810 if (status) {
1811 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1812 __func__, status);
1813 return status;
1814 }
1815
1816 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1817
1818 /* Set Initial MCR */
1819 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1820 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1821
1822 edge_serial = edge_port->edge_serial;
1823 if (mutex_lock_interruptible(&edge_serial->es_lock))
1824 return -ERESTARTSYS;
1825 if (edge_serial->num_ports_open == 0) {
1826 /* we are the first port to open, post the interrupt urb */
1827 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1828 if (!urb) {
1829 dev_err(&port->dev,
1830 "%s - no interrupt urb present, exiting\n",
1831 __func__);
1832 status = -EINVAL;
1833 goto release_es_lock;
1834 }
1835 urb->context = edge_serial;
1836 status = usb_submit_urb(urb, GFP_KERNEL);
1837 if (status) {
1838 dev_err(&port->dev,
1839 "%s - usb_submit_urb failed with value %d\n",
1840 __func__, status);
1841 goto release_es_lock;
1842 }
1843 }
1844
1845 /*
1846 * reset the data toggle on the bulk endpoints to work around bug in
1847 * host controllers where things get out of sync some times
1848 */
1849 usb_clear_halt(dev, port->write_urb->pipe);
1850 usb_clear_halt(dev, port->read_urb->pipe);
1851
1852 /* start up our bulk read urb */
1853 urb = port->read_urb;
1854 if (!urb) {
1855 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1856 __func__);
1857 status = -EINVAL;
1858 goto unlink_int_urb;
1859 }
1860 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1861 urb->context = edge_port;
1862 status = usb_submit_urb(urb, GFP_KERNEL);
1863 if (status) {
1864 dev_err(&port->dev,
1865 "%s - read bulk usb_submit_urb failed with value %d\n",
1866 __func__, status);
1867 goto unlink_int_urb;
1868 }
1869
1870 ++edge_serial->num_ports_open;
1871
1872 goto release_es_lock;
1873
1874 unlink_int_urb:
1875 if (edge_port->edge_serial->num_ports_open == 0)
1876 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1877 release_es_lock:
1878 mutex_unlock(&edge_serial->es_lock);
1879 return status;
1880 }
1881
1882 static void edge_close(struct usb_serial_port *port)
1883 {
1884 struct edgeport_serial *edge_serial;
1885 struct edgeport_port *edge_port;
1886 struct usb_serial *serial = port->serial;
1887 unsigned long flags;
1888 int port_number;
1889
1890 edge_serial = usb_get_serial_data(port->serial);
1891 edge_port = usb_get_serial_port_data(port);
1892 if (edge_serial == NULL || edge_port == NULL)
1893 return;
1894
1895 /* The bulkreadcompletion routine will check
1896 * this flag and dump add read data */
1897 edge_port->close_pending = 1;
1898
1899 usb_kill_urb(port->read_urb);
1900 usb_kill_urb(port->write_urb);
1901 edge_port->ep_write_urb_in_use = 0;
1902 spin_lock_irqsave(&edge_port->ep_lock, flags);
1903 kfifo_reset_out(&port->write_fifo);
1904 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1905
1906 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1907 port_number = port->port_number;
1908 send_cmd(serial->dev, UMPC_CLOSE_PORT,
1909 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1910
1911 mutex_lock(&edge_serial->es_lock);
1912 --edge_port->edge_serial->num_ports_open;
1913 if (edge_port->edge_serial->num_ports_open <= 0) {
1914 /* last port is now closed, let's shut down our interrupt urb */
1915 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1916 edge_port->edge_serial->num_ports_open = 0;
1917 }
1918 mutex_unlock(&edge_serial->es_lock);
1919 edge_port->close_pending = 0;
1920 }
1921
1922 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1923 const unsigned char *data, int count)
1924 {
1925 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1926
1927 if (count == 0) {
1928 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1929 return 0;
1930 }
1931
1932 if (edge_port == NULL)
1933 return -ENODEV;
1934 if (edge_port->close_pending == 1)
1935 return -ENODEV;
1936
1937 count = kfifo_in_locked(&port->write_fifo, data, count,
1938 &edge_port->ep_lock);
1939 edge_send(port, tty);
1940
1941 return count;
1942 }
1943
1944 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
1945 {
1946 int count, result;
1947 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1948 unsigned long flags;
1949
1950 spin_lock_irqsave(&edge_port->ep_lock, flags);
1951
1952 if (edge_port->ep_write_urb_in_use) {
1953 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1954 return;
1955 }
1956
1957 count = kfifo_out(&port->write_fifo,
1958 port->write_urb->transfer_buffer,
1959 port->bulk_out_size);
1960
1961 if (count == 0) {
1962 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1963 return;
1964 }
1965
1966 edge_port->ep_write_urb_in_use = 1;
1967
1968 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1969
1970 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1971
1972 /* set up our urb */
1973 port->write_urb->transfer_buffer_length = count;
1974
1975 /* send the data out the bulk port */
1976 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1977 if (result) {
1978 dev_err_console(port,
1979 "%s - failed submitting write urb, error %d\n",
1980 __func__, result);
1981 edge_port->ep_write_urb_in_use = 0;
1982 /* TODO: reschedule edge_send */
1983 } else
1984 edge_port->port->icount.tx += count;
1985
1986 /* wakeup any process waiting for writes to complete */
1987 /* there is now more room in the buffer for new writes */
1988 if (tty)
1989 tty_wakeup(tty);
1990 }
1991
1992 static int edge_write_room(struct tty_struct *tty)
1993 {
1994 struct usb_serial_port *port = tty->driver_data;
1995 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1996 int room = 0;
1997 unsigned long flags;
1998
1999 if (edge_port == NULL)
2000 return 0;
2001 if (edge_port->close_pending == 1)
2002 return 0;
2003
2004 spin_lock_irqsave(&edge_port->ep_lock, flags);
2005 room = kfifo_avail(&port->write_fifo);
2006 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2007
2008 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2009 return room;
2010 }
2011
2012 static int edge_chars_in_buffer(struct tty_struct *tty)
2013 {
2014 struct usb_serial_port *port = tty->driver_data;
2015 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2016 int chars = 0;
2017 unsigned long flags;
2018 if (edge_port == NULL)
2019 return 0;
2020
2021 spin_lock_irqsave(&edge_port->ep_lock, flags);
2022 chars = kfifo_len(&port->write_fifo);
2023 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2024
2025 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2026 return chars;
2027 }
2028
2029 static bool edge_tx_empty(struct usb_serial_port *port)
2030 {
2031 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2032 int ret;
2033
2034 ret = tx_active(edge_port);
2035 if (ret > 0)
2036 return false;
2037
2038 return true;
2039 }
2040
2041 static void edge_throttle(struct tty_struct *tty)
2042 {
2043 struct usb_serial_port *port = tty->driver_data;
2044 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2045 int status;
2046
2047 if (edge_port == NULL)
2048 return;
2049
2050 /* if we are implementing XON/XOFF, send the stop character */
2051 if (I_IXOFF(tty)) {
2052 unsigned char stop_char = STOP_CHAR(tty);
2053 status = edge_write(tty, port, &stop_char, 1);
2054 if (status <= 0) {
2055 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2056 }
2057 }
2058
2059 /* if we are implementing RTS/CTS, stop reads */
2060 /* and the Edgeport will clear the RTS line */
2061 if (C_CRTSCTS(tty))
2062 stop_read(edge_port);
2063
2064 }
2065
2066 static void edge_unthrottle(struct tty_struct *tty)
2067 {
2068 struct usb_serial_port *port = tty->driver_data;
2069 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2070 int status;
2071
2072 if (edge_port == NULL)
2073 return;
2074
2075 /* if we are implementing XON/XOFF, send the start character */
2076 if (I_IXOFF(tty)) {
2077 unsigned char start_char = START_CHAR(tty);
2078 status = edge_write(tty, port, &start_char, 1);
2079 if (status <= 0) {
2080 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2081 }
2082 }
2083 /* if we are implementing RTS/CTS, restart reads */
2084 /* are the Edgeport will assert the RTS line */
2085 if (C_CRTSCTS(tty)) {
2086 status = restart_read(edge_port);
2087 if (status)
2088 dev_err(&port->dev,
2089 "%s - read bulk usb_submit_urb failed: %d\n",
2090 __func__, status);
2091 }
2092
2093 }
2094
2095 static void stop_read(struct edgeport_port *edge_port)
2096 {
2097 unsigned long flags;
2098
2099 spin_lock_irqsave(&edge_port->ep_lock, flags);
2100
2101 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2102 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2103 edge_port->shadow_mcr &= ~MCR_RTS;
2104
2105 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2106 }
2107
2108 static int restart_read(struct edgeport_port *edge_port)
2109 {
2110 struct urb *urb;
2111 int status = 0;
2112 unsigned long flags;
2113
2114 spin_lock_irqsave(&edge_port->ep_lock, flags);
2115
2116 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2117 urb = edge_port->port->read_urb;
2118 status = usb_submit_urb(urb, GFP_ATOMIC);
2119 }
2120 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2121 edge_port->shadow_mcr |= MCR_RTS;
2122
2123 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2124
2125 return status;
2126 }
2127
2128 static void change_port_settings(struct tty_struct *tty,
2129 struct edgeport_port *edge_port, struct ktermios *old_termios)
2130 {
2131 struct device *dev = &edge_port->port->dev;
2132 struct ump_uart_config *config;
2133 int baud;
2134 unsigned cflag;
2135 int status;
2136 int port_number = edge_port->port->port_number;
2137
2138 config = kmalloc (sizeof (*config), GFP_KERNEL);
2139 if (!config) {
2140 tty->termios = *old_termios;
2141 dev_err(dev, "%s - out of memory\n", __func__);
2142 return;
2143 }
2144
2145 cflag = tty->termios.c_cflag;
2146
2147 config->wFlags = 0;
2148
2149 /* These flags must be set */
2150 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2151 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2152 config->bUartMode = (__u8)(edge_port->bUartMode);
2153
2154 switch (cflag & CSIZE) {
2155 case CS5:
2156 config->bDataBits = UMP_UART_CHAR5BITS;
2157 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2158 break;
2159 case CS6:
2160 config->bDataBits = UMP_UART_CHAR6BITS;
2161 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2162 break;
2163 case CS7:
2164 config->bDataBits = UMP_UART_CHAR7BITS;
2165 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2166 break;
2167 default:
2168 case CS8:
2169 config->bDataBits = UMP_UART_CHAR8BITS;
2170 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2171 break;
2172 }
2173
2174 if (cflag & PARENB) {
2175 if (cflag & PARODD) {
2176 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2177 config->bParity = UMP_UART_ODDPARITY;
2178 dev_dbg(dev, "%s - parity = odd\n", __func__);
2179 } else {
2180 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2181 config->bParity = UMP_UART_EVENPARITY;
2182 dev_dbg(dev, "%s - parity = even\n", __func__);
2183 }
2184 } else {
2185 config->bParity = UMP_UART_NOPARITY;
2186 dev_dbg(dev, "%s - parity = none\n", __func__);
2187 }
2188
2189 if (cflag & CSTOPB) {
2190 config->bStopBits = UMP_UART_STOPBIT2;
2191 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2192 } else {
2193 config->bStopBits = UMP_UART_STOPBIT1;
2194 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2195 }
2196
2197 /* figure out the flow control settings */
2198 if (cflag & CRTSCTS) {
2199 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2200 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2201 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2202 } else {
2203 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2204 tty->hw_stopped = 0;
2205 restart_read(edge_port);
2206 }
2207
2208 /* if we are implementing XON/XOFF, set the start and stop
2209 character in the device */
2210 config->cXon = START_CHAR(tty);
2211 config->cXoff = STOP_CHAR(tty);
2212
2213 /* if we are implementing INBOUND XON/XOFF */
2214 if (I_IXOFF(tty)) {
2215 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2216 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2217 __func__, config->cXon, config->cXoff);
2218 } else
2219 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2220
2221 /* if we are implementing OUTBOUND XON/XOFF */
2222 if (I_IXON(tty)) {
2223 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2224 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2225 __func__, config->cXon, config->cXoff);
2226 } else
2227 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2228
2229 tty->termios.c_cflag &= ~CMSPAR;
2230
2231 /* Round the baud rate */
2232 baud = tty_get_baud_rate(tty);
2233 if (!baud) {
2234 /* pick a default, any default... */
2235 baud = 9600;
2236 } else
2237 tty_encode_baud_rate(tty, baud, baud);
2238
2239 edge_port->baud_rate = baud;
2240 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2241
2242 /* FIXME: Recompute actual baud from divisor here */
2243
2244 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2245
2246 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2247 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2248 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2249 dev_dbg(dev, "bParity: %d\n", config->bParity);
2250 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2251 dev_dbg(dev, "cXon: %d\n", config->cXon);
2252 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2253 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2254
2255 /* move the word values into big endian mode */
2256 cpu_to_be16s(&config->wFlags);
2257 cpu_to_be16s(&config->wBaudRate);
2258
2259 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2260 (__u8)(UMPM_UART1_PORT + port_number),
2261 0, (__u8 *)config, sizeof(*config));
2262 if (status)
2263 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2264 __func__, status);
2265 kfree(config);
2266 }
2267
2268 static void edge_set_termios(struct tty_struct *tty,
2269 struct usb_serial_port *port, struct ktermios *old_termios)
2270 {
2271 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2272 unsigned int cflag;
2273
2274 cflag = tty->termios.c_cflag;
2275
2276 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2277 tty->termios.c_cflag, tty->termios.c_iflag);
2278 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2279 old_termios->c_cflag, old_termios->c_iflag);
2280
2281 if (edge_port == NULL)
2282 return;
2283 /* change the port settings to the new ones specified */
2284 change_port_settings(tty, edge_port, old_termios);
2285 }
2286
2287 static int edge_tiocmset(struct tty_struct *tty,
2288 unsigned int set, unsigned int clear)
2289 {
2290 struct usb_serial_port *port = tty->driver_data;
2291 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2292 unsigned int mcr;
2293 unsigned long flags;
2294
2295 spin_lock_irqsave(&edge_port->ep_lock, flags);
2296 mcr = edge_port->shadow_mcr;
2297 if (set & TIOCM_RTS)
2298 mcr |= MCR_RTS;
2299 if (set & TIOCM_DTR)
2300 mcr |= MCR_DTR;
2301 if (set & TIOCM_LOOP)
2302 mcr |= MCR_LOOPBACK;
2303
2304 if (clear & TIOCM_RTS)
2305 mcr &= ~MCR_RTS;
2306 if (clear & TIOCM_DTR)
2307 mcr &= ~MCR_DTR;
2308 if (clear & TIOCM_LOOP)
2309 mcr &= ~MCR_LOOPBACK;
2310
2311 edge_port->shadow_mcr = mcr;
2312 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2313
2314 restore_mcr(edge_port, mcr);
2315 return 0;
2316 }
2317
2318 static int edge_tiocmget(struct tty_struct *tty)
2319 {
2320 struct usb_serial_port *port = tty->driver_data;
2321 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2322 unsigned int result = 0;
2323 unsigned int msr;
2324 unsigned int mcr;
2325 unsigned long flags;
2326
2327 spin_lock_irqsave(&edge_port->ep_lock, flags);
2328
2329 msr = edge_port->shadow_msr;
2330 mcr = edge_port->shadow_mcr;
2331 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2332 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2333 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2334 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2335 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2336 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2337
2338
2339 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2340 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2341
2342 return result;
2343 }
2344
2345 static int get_serial_info(struct edgeport_port *edge_port,
2346 struct serial_struct __user *retinfo)
2347 {
2348 struct serial_struct tmp;
2349 unsigned cwait;
2350
2351 if (!retinfo)
2352 return -EFAULT;
2353
2354 cwait = edge_port->port->port.closing_wait;
2355 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2356 cwait = jiffies_to_msecs(cwait) / 10;
2357
2358 memset(&tmp, 0, sizeof(tmp));
2359
2360 tmp.type = PORT_16550A;
2361 tmp.line = edge_port->port->minor;
2362 tmp.port = edge_port->port->port_number;
2363 tmp.irq = 0;
2364 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2365 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2366 tmp.baud_base = 9600;
2367 tmp.close_delay = 5*HZ;
2368 tmp.closing_wait = cwait;
2369
2370 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2371 return -EFAULT;
2372 return 0;
2373 }
2374
2375 static int edge_ioctl(struct tty_struct *tty,
2376 unsigned int cmd, unsigned long arg)
2377 {
2378 struct usb_serial_port *port = tty->driver_data;
2379 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2380
2381 dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd);
2382
2383 switch (cmd) {
2384 case TIOCGSERIAL:
2385 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2386 return get_serial_info(edge_port,
2387 (struct serial_struct __user *) arg);
2388 }
2389 return -ENOIOCTLCMD;
2390 }
2391
2392 static void edge_break(struct tty_struct *tty, int break_state)
2393 {
2394 struct usb_serial_port *port = tty->driver_data;
2395 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2396 int status;
2397 int bv = 0; /* Off */
2398
2399 if (break_state == -1)
2400 bv = 1; /* On */
2401 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2402 if (status)
2403 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2404 __func__, status);
2405 }
2406
2407 static int edge_startup(struct usb_serial *serial)
2408 {
2409 struct edgeport_serial *edge_serial;
2410 int status;
2411
2412 /* create our private serial structure */
2413 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2414 if (edge_serial == NULL) {
2415 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2416 return -ENOMEM;
2417 }
2418 mutex_init(&edge_serial->es_lock);
2419 edge_serial->serial = serial;
2420 usb_set_serial_data(serial, edge_serial);
2421
2422 status = download_fw(edge_serial);
2423 if (status) {
2424 kfree(edge_serial);
2425 return status;
2426 }
2427
2428 return 0;
2429 }
2430
2431 static void edge_disconnect(struct usb_serial *serial)
2432 {
2433 }
2434
2435 static void edge_release(struct usb_serial *serial)
2436 {
2437 kfree(usb_get_serial_data(serial));
2438 }
2439
2440 static int edge_port_probe(struct usb_serial_port *port)
2441 {
2442 struct edgeport_port *edge_port;
2443 int ret;
2444
2445 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2446 if (!edge_port)
2447 return -ENOMEM;
2448
2449 spin_lock_init(&edge_port->ep_lock);
2450 edge_port->port = port;
2451 edge_port->edge_serial = usb_get_serial_data(port->serial);
2452 edge_port->bUartMode = default_uart_mode;
2453
2454 switch (port->port_number) {
2455 case 0:
2456 edge_port->uart_base = UMPMEM_BASE_UART1;
2457 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2458 break;
2459 case 1:
2460 edge_port->uart_base = UMPMEM_BASE_UART2;
2461 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2462 break;
2463 default:
2464 dev_err(&port->dev, "unknown port number\n");
2465 ret = -ENODEV;
2466 goto err;
2467 }
2468
2469 dev_dbg(&port->dev,
2470 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2471 __func__, port->port_number, edge_port->uart_base,
2472 edge_port->dma_address);
2473
2474 usb_set_serial_port_data(port, edge_port);
2475
2476 ret = edge_create_sysfs_attrs(port);
2477 if (ret)
2478 goto err;
2479
2480 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2481 port->port.drain_delay = 1;
2482
2483 return 0;
2484 err:
2485 kfree(edge_port);
2486
2487 return ret;
2488 }
2489
2490 static int edge_port_remove(struct usb_serial_port *port)
2491 {
2492 struct edgeport_port *edge_port;
2493
2494 edge_port = usb_get_serial_port_data(port);
2495 edge_remove_sysfs_attrs(port);
2496 kfree(edge_port);
2497
2498 return 0;
2499 }
2500
2501 /* Sysfs Attributes */
2502
2503 static ssize_t uart_mode_show(struct device *dev,
2504 struct device_attribute *attr, char *buf)
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
2509 return sprintf(buf, "%d\n", edge_port->bUartMode);
2510 }
2511
2512 static ssize_t uart_mode_store(struct device *dev,
2513 struct device_attribute *attr, const char *valbuf, size_t count)
2514 {
2515 struct usb_serial_port *port = to_usb_serial_port(dev);
2516 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2517 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2518
2519 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2520
2521 if (v < 256)
2522 edge_port->bUartMode = v;
2523 else
2524 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2525
2526 return count;
2527 }
2528 static DEVICE_ATTR_RW(uart_mode);
2529
2530 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2531 {
2532 return device_create_file(&port->dev, &dev_attr_uart_mode);
2533 }
2534
2535 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2536 {
2537 device_remove_file(&port->dev, &dev_attr_uart_mode);
2538 return 0;
2539 }
2540
2541
2542 static struct usb_serial_driver edgeport_1port_device = {
2543 .driver = {
2544 .owner = THIS_MODULE,
2545 .name = "edgeport_ti_1",
2546 },
2547 .description = "Edgeport TI 1 port adapter",
2548 .id_table = edgeport_1port_id_table,
2549 .num_ports = 1,
2550 .open = edge_open,
2551 .close = edge_close,
2552 .throttle = edge_throttle,
2553 .unthrottle = edge_unthrottle,
2554 .attach = edge_startup,
2555 .disconnect = edge_disconnect,
2556 .release = edge_release,
2557 .port_probe = edge_port_probe,
2558 .port_remove = edge_port_remove,
2559 .ioctl = edge_ioctl,
2560 .set_termios = edge_set_termios,
2561 .tiocmget = edge_tiocmget,
2562 .tiocmset = edge_tiocmset,
2563 .tiocmiwait = usb_serial_generic_tiocmiwait,
2564 .get_icount = usb_serial_generic_get_icount,
2565 .write = edge_write,
2566 .write_room = edge_write_room,
2567 .chars_in_buffer = edge_chars_in_buffer,
2568 .tx_empty = edge_tx_empty,
2569 .break_ctl = edge_break,
2570 .read_int_callback = edge_interrupt_callback,
2571 .read_bulk_callback = edge_bulk_in_callback,
2572 .write_bulk_callback = edge_bulk_out_callback,
2573 };
2574
2575 static struct usb_serial_driver edgeport_2port_device = {
2576 .driver = {
2577 .owner = THIS_MODULE,
2578 .name = "edgeport_ti_2",
2579 },
2580 .description = "Edgeport TI 2 port adapter",
2581 .id_table = edgeport_2port_id_table,
2582 .num_ports = 2,
2583 .open = edge_open,
2584 .close = edge_close,
2585 .throttle = edge_throttle,
2586 .unthrottle = edge_unthrottle,
2587 .attach = edge_startup,
2588 .disconnect = edge_disconnect,
2589 .release = edge_release,
2590 .port_probe = edge_port_probe,
2591 .port_remove = edge_port_remove,
2592 .ioctl = edge_ioctl,
2593 .set_termios = edge_set_termios,
2594 .tiocmget = edge_tiocmget,
2595 .tiocmset = edge_tiocmset,
2596 .tiocmiwait = usb_serial_generic_tiocmiwait,
2597 .get_icount = usb_serial_generic_get_icount,
2598 .write = edge_write,
2599 .write_room = edge_write_room,
2600 .chars_in_buffer = edge_chars_in_buffer,
2601 .tx_empty = edge_tx_empty,
2602 .break_ctl = edge_break,
2603 .read_int_callback = edge_interrupt_callback,
2604 .read_bulk_callback = edge_bulk_in_callback,
2605 .write_bulk_callback = edge_bulk_out_callback,
2606 };
2607
2608 static struct usb_serial_driver * const serial_drivers[] = {
2609 &edgeport_1port_device, &edgeport_2port_device, NULL
2610 };
2611
2612 module_usb_serial_driver(serial_drivers, id_table_combined);
2613
2614 MODULE_AUTHOR(DRIVER_AUTHOR);
2615 MODULE_DESCRIPTION(DRIVER_DESC);
2616 MODULE_LICENSE("GPL");
2617 MODULE_FIRMWARE("edgeport/down3.bin");
2618
2619 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2620 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2621
2622 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2623 MODULE_PARM_DESC(ignore_cpu_rev,
2624 "Ignore the cpu revision when connecting to a device");
2625
2626 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2627 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux with added FPC-III support