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Merge branch 'acpi-lpss'
[deliverable/linux.git] / drivers / usb / serial / io_ti.c
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 struct async_icount icount;
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 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->number - port->serial->minor;
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->number - port->port->serial->minor;
1396 on = !!on; /* 1 or 0 not bitmask */
1397 return send_cmd(port->port->serial->dev,
1398 feature, (__u8)(UMPM_UART1_PORT + port_number),
1399 on, NULL, 0);
1400 }
1401
1402
1403 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1404 {
1405 int status = 0;
1406
1407 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1408
1409 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1410 if (status)
1411 return status;
1412 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1413 if (status)
1414 return status;
1415 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1416 }
1417
1418 /* Convert TI LSR to standard UART flags */
1419 static __u8 map_line_status(__u8 ti_lsr)
1420 {
1421 __u8 lsr = 0;
1422
1423 #define MAP_FLAG(flagUmp, flagUart) \
1424 if (ti_lsr & flagUmp) \
1425 lsr |= flagUart;
1426
1427 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1428 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1429 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1430 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1431 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1432 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1433
1434 #undef MAP_FLAG
1435
1436 return lsr;
1437 }
1438
1439 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1440 {
1441 struct async_icount *icount;
1442 struct tty_struct *tty;
1443
1444 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1445
1446 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1447 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1448 icount = &edge_port->icount;
1449
1450 /* update input line counters */
1451 if (msr & EDGEPORT_MSR_DELTA_CTS)
1452 icount->cts++;
1453 if (msr & EDGEPORT_MSR_DELTA_DSR)
1454 icount->dsr++;
1455 if (msr & EDGEPORT_MSR_DELTA_CD)
1456 icount->dcd++;
1457 if (msr & EDGEPORT_MSR_DELTA_RI)
1458 icount->rng++;
1459 wake_up_interruptible(&edge_port->port->delta_msr_wait);
1460 }
1461
1462 /* Save the new modem status */
1463 edge_port->shadow_msr = msr & 0xf0;
1464
1465 tty = tty_port_tty_get(&edge_port->port->port);
1466 /* handle CTS flow control */
1467 if (tty && C_CRTSCTS(tty)) {
1468 if (msr & EDGEPORT_MSR_CTS) {
1469 tty->hw_stopped = 0;
1470 tty_wakeup(tty);
1471 } else {
1472 tty->hw_stopped = 1;
1473 }
1474 }
1475 tty_kref_put(tty);
1476 }
1477
1478 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1479 __u8 lsr, __u8 data)
1480 {
1481 struct async_icount *icount;
1482 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1483 LSR_FRM_ERR | LSR_BREAK));
1484
1485 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1486
1487 edge_port->shadow_lsr = lsr;
1488
1489 if (new_lsr & LSR_BREAK)
1490 /*
1491 * Parity and Framing errors only count if they
1492 * occur exclusive of a break being received.
1493 */
1494 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1495
1496 /* Place LSR data byte into Rx buffer */
1497 if (lsr_data)
1498 edge_tty_recv(edge_port->port, &data, 1);
1499
1500 /* update input line counters */
1501 icount = &edge_port->icount;
1502 if (new_lsr & LSR_BREAK)
1503 icount->brk++;
1504 if (new_lsr & LSR_OVER_ERR)
1505 icount->overrun++;
1506 if (new_lsr & LSR_PAR_ERR)
1507 icount->parity++;
1508 if (new_lsr & LSR_FRM_ERR)
1509 icount->frame++;
1510 }
1511
1512
1513 static void edge_interrupt_callback(struct urb *urb)
1514 {
1515 struct edgeport_serial *edge_serial = urb->context;
1516 struct usb_serial_port *port;
1517 struct edgeport_port *edge_port;
1518 struct device *dev;
1519 unsigned char *data = urb->transfer_buffer;
1520 int length = urb->actual_length;
1521 int port_number;
1522 int function;
1523 int retval;
1524 __u8 lsr;
1525 __u8 msr;
1526 int status = urb->status;
1527
1528 switch (status) {
1529 case 0:
1530 /* success */
1531 break;
1532 case -ECONNRESET:
1533 case -ENOENT:
1534 case -ESHUTDOWN:
1535 /* this urb is terminated, clean up */
1536 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1537 __func__, status);
1538 return;
1539 default:
1540 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1541 "%d\n", __func__, status);
1542 goto exit;
1543 }
1544
1545 if (!length) {
1546 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1547 goto exit;
1548 }
1549
1550 dev = &edge_serial->serial->dev->dev;
1551 usb_serial_debug_data(dev, __func__, length, data);
1552
1553 if (length != 2) {
1554 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1555 goto exit;
1556 }
1557
1558 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1559 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1560 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1561 port_number, function, data[1]);
1562 port = edge_serial->serial->port[port_number];
1563 edge_port = usb_get_serial_port_data(port);
1564 if (!edge_port) {
1565 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1566 return;
1567 }
1568 switch (function) {
1569 case TIUMP_INTERRUPT_CODE_LSR:
1570 lsr = map_line_status(data[1]);
1571 if (lsr & UMP_UART_LSR_DATA_MASK) {
1572 /* Save the LSR event for bulk read
1573 completion routine */
1574 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1575 __func__, port_number, lsr);
1576 edge_port->lsr_event = 1;
1577 edge_port->lsr_mask = lsr;
1578 } else {
1579 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1580 __func__, port_number, lsr);
1581 handle_new_lsr(edge_port, 0, lsr, 0);
1582 }
1583 break;
1584
1585 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1586 /* Copy MSR from UMP */
1587 msr = data[1];
1588 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1589 __func__, port_number, msr);
1590 handle_new_msr(edge_port, msr);
1591 break;
1592
1593 default:
1594 dev_err(&urb->dev->dev,
1595 "%s - Unknown Interrupt code from UMP %x\n",
1596 __func__, data[1]);
1597 break;
1598
1599 }
1600
1601 exit:
1602 retval = usb_submit_urb(urb, GFP_ATOMIC);
1603 if (retval)
1604 dev_err(&urb->dev->dev,
1605 "%s - usb_submit_urb failed with result %d\n",
1606 __func__, retval);
1607 }
1608
1609 static void edge_bulk_in_callback(struct urb *urb)
1610 {
1611 struct edgeport_port *edge_port = urb->context;
1612 struct device *dev = &edge_port->port->dev;
1613 unsigned char *data = urb->transfer_buffer;
1614 int retval = 0;
1615 int port_number;
1616 int status = urb->status;
1617
1618 switch (status) {
1619 case 0:
1620 /* success */
1621 break;
1622 case -ECONNRESET:
1623 case -ENOENT:
1624 case -ESHUTDOWN:
1625 /* this urb is terminated, clean up */
1626 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1627 return;
1628 default:
1629 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1630 }
1631
1632 if (status == -EPIPE)
1633 goto exit;
1634
1635 if (status) {
1636 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1637 return;
1638 }
1639
1640 port_number = edge_port->port->number - edge_port->port->serial->minor;
1641
1642 if (edge_port->lsr_event) {
1643 edge_port->lsr_event = 0;
1644 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1645 __func__, port_number, edge_port->lsr_mask, *data);
1646 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1647 /* Adjust buffer length/pointer */
1648 --urb->actual_length;
1649 ++data;
1650 }
1651
1652 if (urb->actual_length) {
1653 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1654 if (edge_port->close_pending)
1655 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1656 __func__);
1657 else
1658 edge_tty_recv(edge_port->port, data,
1659 urb->actual_length);
1660 edge_port->icount.rx += urb->actual_length;
1661 }
1662
1663 exit:
1664 /* continue read unless stopped */
1665 spin_lock(&edge_port->ep_lock);
1666 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1667 retval = usb_submit_urb(urb, GFP_ATOMIC);
1668 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1669 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1670
1671 spin_unlock(&edge_port->ep_lock);
1672 if (retval)
1673 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1674 }
1675
1676 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1677 int length)
1678 {
1679 int queued;
1680
1681 queued = tty_insert_flip_string(&port->port, data, length);
1682 if (queued < length)
1683 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1684 __func__, length - queued);
1685 tty_flip_buffer_push(&port->port);
1686 }
1687
1688 static void edge_bulk_out_callback(struct urb *urb)
1689 {
1690 struct usb_serial_port *port = urb->context;
1691 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1692 int status = urb->status;
1693 struct tty_struct *tty;
1694
1695 edge_port->ep_write_urb_in_use = 0;
1696
1697 switch (status) {
1698 case 0:
1699 /* success */
1700 break;
1701 case -ECONNRESET:
1702 case -ENOENT:
1703 case -ESHUTDOWN:
1704 /* this urb is terminated, clean up */
1705 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1706 __func__, status);
1707 return;
1708 default:
1709 dev_err_console(port, "%s - nonzero write bulk status "
1710 "received: %d\n", __func__, status);
1711 }
1712
1713 /* send any buffered data */
1714 tty = tty_port_tty_get(&port->port);
1715 edge_send(tty);
1716 tty_kref_put(tty);
1717 }
1718
1719 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1720 {
1721 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1722 struct edgeport_serial *edge_serial;
1723 struct usb_device *dev;
1724 struct urb *urb;
1725 int port_number;
1726 int status;
1727 u16 open_settings;
1728 u8 transaction_timeout;
1729
1730 if (edge_port == NULL)
1731 return -ENODEV;
1732
1733 port_number = port->number - port->serial->minor;
1734 switch (port_number) {
1735 case 0:
1736 edge_port->uart_base = UMPMEM_BASE_UART1;
1737 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1738 break;
1739 case 1:
1740 edge_port->uart_base = UMPMEM_BASE_UART2;
1741 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1742 break;
1743 default:
1744 dev_err(&port->dev, "Unknown port number!!!\n");
1745 return -ENODEV;
1746 }
1747
1748 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1749 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1750
1751 dev = port->serial->dev;
1752
1753 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1754
1755 /* turn off loopback */
1756 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1757 if (status) {
1758 dev_err(&port->dev,
1759 "%s - cannot send clear loopback command, %d\n",
1760 __func__, status);
1761 return status;
1762 }
1763
1764 /* set up the port settings */
1765 if (tty)
1766 edge_set_termios(tty, port, &tty->termios);
1767
1768 /* open up the port */
1769
1770 /* milliseconds to timeout for DMA transfer */
1771 transaction_timeout = 2;
1772
1773 edge_port->ump_read_timeout =
1774 max(20, ((transaction_timeout * 3) / 2));
1775
1776 /* milliseconds to timeout for DMA transfer */
1777 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1778 UMP_PIPE_TRANS_TIMEOUT_ENA |
1779 (transaction_timeout << 2));
1780
1781 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1782
1783 /* Tell TI to open and start the port */
1784 status = send_cmd(dev, UMPC_OPEN_PORT,
1785 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1786 if (status) {
1787 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1788 __func__, status);
1789 return status;
1790 }
1791
1792 /* Start the DMA? */
1793 status = send_cmd(dev, UMPC_START_PORT,
1794 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1795 if (status) {
1796 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1797 __func__, status);
1798 return status;
1799 }
1800
1801 /* Clear TX and RX buffers in UMP */
1802 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1803 if (status) {
1804 dev_err(&port->dev,
1805 "%s - cannot send clear buffers command, %d\n",
1806 __func__, status);
1807 return status;
1808 }
1809
1810 /* Read Initial MSR */
1811 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1812 (__u16)(UMPM_UART1_PORT + port_number),
1813 &edge_port->shadow_msr, 1);
1814 if (status) {
1815 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1816 __func__, status);
1817 return status;
1818 }
1819
1820 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1821
1822 /* Set Initial MCR */
1823 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1824 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1825
1826 edge_serial = edge_port->edge_serial;
1827 if (mutex_lock_interruptible(&edge_serial->es_lock))
1828 return -ERESTARTSYS;
1829 if (edge_serial->num_ports_open == 0) {
1830 /* we are the first port to open, post the interrupt urb */
1831 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1832 if (!urb) {
1833 dev_err(&port->dev,
1834 "%s - no interrupt urb present, exiting\n",
1835 __func__);
1836 status = -EINVAL;
1837 goto release_es_lock;
1838 }
1839 urb->context = edge_serial;
1840 status = usb_submit_urb(urb, GFP_KERNEL);
1841 if (status) {
1842 dev_err(&port->dev,
1843 "%s - usb_submit_urb failed with value %d\n",
1844 __func__, status);
1845 goto release_es_lock;
1846 }
1847 }
1848
1849 /*
1850 * reset the data toggle on the bulk endpoints to work around bug in
1851 * host controllers where things get out of sync some times
1852 */
1853 usb_clear_halt(dev, port->write_urb->pipe);
1854 usb_clear_halt(dev, port->read_urb->pipe);
1855
1856 /* start up our bulk read urb */
1857 urb = port->read_urb;
1858 if (!urb) {
1859 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1860 __func__);
1861 status = -EINVAL;
1862 goto unlink_int_urb;
1863 }
1864 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1865 urb->context = edge_port;
1866 status = usb_submit_urb(urb, GFP_KERNEL);
1867 if (status) {
1868 dev_err(&port->dev,
1869 "%s - read bulk usb_submit_urb failed with value %d\n",
1870 __func__, status);
1871 goto unlink_int_urb;
1872 }
1873
1874 ++edge_serial->num_ports_open;
1875
1876 port->port.drain_delay = 1;
1877
1878 goto release_es_lock;
1879
1880 unlink_int_urb:
1881 if (edge_port->edge_serial->num_ports_open == 0)
1882 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1883 release_es_lock:
1884 mutex_unlock(&edge_serial->es_lock);
1885 return status;
1886 }
1887
1888 static void edge_close(struct usb_serial_port *port)
1889 {
1890 struct edgeport_serial *edge_serial;
1891 struct edgeport_port *edge_port;
1892 struct usb_serial *serial = port->serial;
1893 unsigned long flags;
1894 int port_number;
1895
1896 edge_serial = usb_get_serial_data(port->serial);
1897 edge_port = usb_get_serial_port_data(port);
1898 if (edge_serial == NULL || edge_port == NULL)
1899 return;
1900
1901 /* The bulkreadcompletion routine will check
1902 * this flag and dump add read data */
1903 edge_port->close_pending = 1;
1904
1905 usb_kill_urb(port->read_urb);
1906 usb_kill_urb(port->write_urb);
1907 edge_port->ep_write_urb_in_use = 0;
1908 spin_lock_irqsave(&edge_port->ep_lock, flags);
1909 kfifo_reset_out(&edge_port->write_fifo);
1910 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1911
1912 /* assuming we can still talk to the device,
1913 * send a close port command to it */
1914 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1915 port_number = port->number - port->serial->minor;
1916
1917 mutex_lock(&serial->disc_mutex);
1918 if (!serial->disconnected) {
1919 send_cmd(serial->dev,
1920 UMPC_CLOSE_PORT,
1921 (__u8)(UMPM_UART1_PORT + port_number),
1922 0,
1923 NULL,
1924 0);
1925 }
1926 mutex_unlock(&serial->disc_mutex);
1927
1928 mutex_lock(&edge_serial->es_lock);
1929 --edge_port->edge_serial->num_ports_open;
1930 if (edge_port->edge_serial->num_ports_open <= 0) {
1931 /* last port is now closed, let's shut down our interrupt urb */
1932 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1933 edge_port->edge_serial->num_ports_open = 0;
1934 }
1935 mutex_unlock(&edge_serial->es_lock);
1936 edge_port->close_pending = 0;
1937 }
1938
1939 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1940 const unsigned char *data, int count)
1941 {
1942 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1943
1944 if (count == 0) {
1945 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1946 return 0;
1947 }
1948
1949 if (edge_port == NULL)
1950 return -ENODEV;
1951 if (edge_port->close_pending == 1)
1952 return -ENODEV;
1953
1954 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
1955 &edge_port->ep_lock);
1956 edge_send(tty);
1957
1958 return count;
1959 }
1960
1961 static void edge_send(struct tty_struct *tty)
1962 {
1963 struct usb_serial_port *port = tty->driver_data;
1964 int count, result;
1965 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1966 unsigned long flags;
1967
1968 spin_lock_irqsave(&edge_port->ep_lock, flags);
1969
1970 if (edge_port->ep_write_urb_in_use) {
1971 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1972 return;
1973 }
1974
1975 count = kfifo_out(&edge_port->write_fifo,
1976 port->write_urb->transfer_buffer,
1977 port->bulk_out_size);
1978
1979 if (count == 0) {
1980 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1981 return;
1982 }
1983
1984 edge_port->ep_write_urb_in_use = 1;
1985
1986 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1987
1988 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1989
1990 /* set up our urb */
1991 port->write_urb->transfer_buffer_length = count;
1992
1993 /* send the data out the bulk port */
1994 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1995 if (result) {
1996 dev_err_console(port,
1997 "%s - failed submitting write urb, error %d\n",
1998 __func__, result);
1999 edge_port->ep_write_urb_in_use = 0;
2000 /* TODO: reschedule edge_send */
2001 } else
2002 edge_port->icount.tx += count;
2003
2004 /* wakeup any process waiting for writes to complete */
2005 /* there is now more room in the buffer for new writes */
2006 if (tty)
2007 tty_wakeup(tty);
2008 }
2009
2010 static int edge_write_room(struct tty_struct *tty)
2011 {
2012 struct usb_serial_port *port = tty->driver_data;
2013 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2014 int room = 0;
2015 unsigned long flags;
2016
2017 if (edge_port == NULL)
2018 return 0;
2019 if (edge_port->close_pending == 1)
2020 return 0;
2021
2022 spin_lock_irqsave(&edge_port->ep_lock, flags);
2023 room = kfifo_avail(&edge_port->write_fifo);
2024 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2025
2026 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2027 return room;
2028 }
2029
2030 static int edge_chars_in_buffer(struct tty_struct *tty)
2031 {
2032 struct usb_serial_port *port = tty->driver_data;
2033 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2034 int chars = 0;
2035 unsigned long flags;
2036 int ret;
2037
2038 if (edge_port == NULL)
2039 return 0;
2040
2041 spin_lock_irqsave(&edge_port->ep_lock, flags);
2042 chars = kfifo_len(&edge_port->write_fifo);
2043 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2044
2045 if (!chars) {
2046 ret = tx_active(edge_port);
2047 if (ret > 0)
2048 chars = ret;
2049 }
2050
2051 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2052 return chars;
2053 }
2054
2055 static void edge_throttle(struct tty_struct *tty)
2056 {
2057 struct usb_serial_port *port = tty->driver_data;
2058 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2059 int status;
2060
2061 if (edge_port == NULL)
2062 return;
2063
2064 /* if we are implementing XON/XOFF, send the stop character */
2065 if (I_IXOFF(tty)) {
2066 unsigned char stop_char = STOP_CHAR(tty);
2067 status = edge_write(tty, port, &stop_char, 1);
2068 if (status <= 0) {
2069 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2070 }
2071 }
2072
2073 /* if we are implementing RTS/CTS, stop reads */
2074 /* and the Edgeport will clear the RTS line */
2075 if (C_CRTSCTS(tty))
2076 stop_read(edge_port);
2077
2078 }
2079
2080 static void edge_unthrottle(struct tty_struct *tty)
2081 {
2082 struct usb_serial_port *port = tty->driver_data;
2083 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2084 int status;
2085
2086 if (edge_port == NULL)
2087 return;
2088
2089 /* if we are implementing XON/XOFF, send the start character */
2090 if (I_IXOFF(tty)) {
2091 unsigned char start_char = START_CHAR(tty);
2092 status = edge_write(tty, port, &start_char, 1);
2093 if (status <= 0) {
2094 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2095 }
2096 }
2097 /* if we are implementing RTS/CTS, restart reads */
2098 /* are the Edgeport will assert the RTS line */
2099 if (C_CRTSCTS(tty)) {
2100 status = restart_read(edge_port);
2101 if (status)
2102 dev_err(&port->dev,
2103 "%s - read bulk usb_submit_urb failed: %d\n",
2104 __func__, status);
2105 }
2106
2107 }
2108
2109 static void stop_read(struct edgeport_port *edge_port)
2110 {
2111 unsigned long flags;
2112
2113 spin_lock_irqsave(&edge_port->ep_lock, flags);
2114
2115 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2116 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2117 edge_port->shadow_mcr &= ~MCR_RTS;
2118
2119 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2120 }
2121
2122 static int restart_read(struct edgeport_port *edge_port)
2123 {
2124 struct urb *urb;
2125 int status = 0;
2126 unsigned long flags;
2127
2128 spin_lock_irqsave(&edge_port->ep_lock, flags);
2129
2130 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2131 urb = edge_port->port->read_urb;
2132 status = usb_submit_urb(urb, GFP_ATOMIC);
2133 }
2134 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2135 edge_port->shadow_mcr |= MCR_RTS;
2136
2137 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2138
2139 return status;
2140 }
2141
2142 static void change_port_settings(struct tty_struct *tty,
2143 struct edgeport_port *edge_port, struct ktermios *old_termios)
2144 {
2145 struct device *dev = &edge_port->port->dev;
2146 struct ump_uart_config *config;
2147 int baud;
2148 unsigned cflag;
2149 int status;
2150 int port_number = edge_port->port->number -
2151 edge_port->port->serial->minor;
2152
2153 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
2154
2155 config = kmalloc (sizeof (*config), GFP_KERNEL);
2156 if (!config) {
2157 tty->termios = *old_termios;
2158 dev_err(dev, "%s - out of memory\n", __func__);
2159 return;
2160 }
2161
2162 cflag = tty->termios.c_cflag;
2163
2164 config->wFlags = 0;
2165
2166 /* These flags must be set */
2167 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2168 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2169 config->bUartMode = (__u8)(edge_port->bUartMode);
2170
2171 switch (cflag & CSIZE) {
2172 case CS5:
2173 config->bDataBits = UMP_UART_CHAR5BITS;
2174 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2175 break;
2176 case CS6:
2177 config->bDataBits = UMP_UART_CHAR6BITS;
2178 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2179 break;
2180 case CS7:
2181 config->bDataBits = UMP_UART_CHAR7BITS;
2182 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2183 break;
2184 default:
2185 case CS8:
2186 config->bDataBits = UMP_UART_CHAR8BITS;
2187 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2188 break;
2189 }
2190
2191 if (cflag & PARENB) {
2192 if (cflag & PARODD) {
2193 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2194 config->bParity = UMP_UART_ODDPARITY;
2195 dev_dbg(dev, "%s - parity = odd\n", __func__);
2196 } else {
2197 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2198 config->bParity = UMP_UART_EVENPARITY;
2199 dev_dbg(dev, "%s - parity = even\n", __func__);
2200 }
2201 } else {
2202 config->bParity = UMP_UART_NOPARITY;
2203 dev_dbg(dev, "%s - parity = none\n", __func__);
2204 }
2205
2206 if (cflag & CSTOPB) {
2207 config->bStopBits = UMP_UART_STOPBIT2;
2208 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2209 } else {
2210 config->bStopBits = UMP_UART_STOPBIT1;
2211 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2212 }
2213
2214 /* figure out the flow control settings */
2215 if (cflag & CRTSCTS) {
2216 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2217 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2218 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2219 } else {
2220 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2221 tty->hw_stopped = 0;
2222 restart_read(edge_port);
2223 }
2224
2225 /* if we are implementing XON/XOFF, set the start and stop
2226 character in the device */
2227 config->cXon = START_CHAR(tty);
2228 config->cXoff = STOP_CHAR(tty);
2229
2230 /* if we are implementing INBOUND XON/XOFF */
2231 if (I_IXOFF(tty)) {
2232 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2233 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2234 __func__, config->cXon, config->cXoff);
2235 } else
2236 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2237
2238 /* if we are implementing OUTBOUND XON/XOFF */
2239 if (I_IXON(tty)) {
2240 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2241 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2242 __func__, config->cXon, config->cXoff);
2243 } else
2244 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2245
2246 tty->termios.c_cflag &= ~CMSPAR;
2247
2248 /* Round the baud rate */
2249 baud = tty_get_baud_rate(tty);
2250 if (!baud) {
2251 /* pick a default, any default... */
2252 baud = 9600;
2253 } else
2254 tty_encode_baud_rate(tty, baud, baud);
2255
2256 edge_port->baud_rate = baud;
2257 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2258
2259 /* FIXME: Recompute actual baud from divisor here */
2260
2261 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2262
2263 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2264 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2265 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2266 dev_dbg(dev, "bParity: %d\n", config->bParity);
2267 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2268 dev_dbg(dev, "cXon: %d\n", config->cXon);
2269 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2270 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2271
2272 /* move the word values into big endian mode */
2273 cpu_to_be16s(&config->wFlags);
2274 cpu_to_be16s(&config->wBaudRate);
2275
2276 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2277 (__u8)(UMPM_UART1_PORT + port_number),
2278 0, (__u8 *)config, sizeof(*config));
2279 if (status)
2280 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2281 __func__, status);
2282 kfree(config);
2283 }
2284
2285 static void edge_set_termios(struct tty_struct *tty,
2286 struct usb_serial_port *port, struct ktermios *old_termios)
2287 {
2288 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2289 unsigned int cflag;
2290
2291 cflag = tty->termios.c_cflag;
2292
2293 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2294 tty->termios.c_cflag, tty->termios.c_iflag);
2295 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2296 old_termios->c_cflag, old_termios->c_iflag);
2297 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
2298
2299 if (edge_port == NULL)
2300 return;
2301 /* change the port settings to the new ones specified */
2302 change_port_settings(tty, edge_port, old_termios);
2303 }
2304
2305 static int edge_tiocmset(struct tty_struct *tty,
2306 unsigned int set, unsigned int clear)
2307 {
2308 struct usb_serial_port *port = tty->driver_data;
2309 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2310 unsigned int mcr;
2311 unsigned long flags;
2312
2313 spin_lock_irqsave(&edge_port->ep_lock, flags);
2314 mcr = edge_port->shadow_mcr;
2315 if (set & TIOCM_RTS)
2316 mcr |= MCR_RTS;
2317 if (set & TIOCM_DTR)
2318 mcr |= MCR_DTR;
2319 if (set & TIOCM_LOOP)
2320 mcr |= MCR_LOOPBACK;
2321
2322 if (clear & TIOCM_RTS)
2323 mcr &= ~MCR_RTS;
2324 if (clear & TIOCM_DTR)
2325 mcr &= ~MCR_DTR;
2326 if (clear & TIOCM_LOOP)
2327 mcr &= ~MCR_LOOPBACK;
2328
2329 edge_port->shadow_mcr = mcr;
2330 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2331
2332 restore_mcr(edge_port, mcr);
2333 return 0;
2334 }
2335
2336 static int edge_tiocmget(struct tty_struct *tty)
2337 {
2338 struct usb_serial_port *port = tty->driver_data;
2339 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2340 unsigned int result = 0;
2341 unsigned int msr;
2342 unsigned int mcr;
2343 unsigned long flags;
2344
2345 spin_lock_irqsave(&edge_port->ep_lock, flags);
2346
2347 msr = edge_port->shadow_msr;
2348 mcr = edge_port->shadow_mcr;
2349 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2350 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2351 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2352 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2353 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2354 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2355
2356
2357 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2358 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2359
2360 return result;
2361 }
2362
2363 static int edge_get_icount(struct tty_struct *tty,
2364 struct serial_icounter_struct *icount)
2365 {
2366 struct usb_serial_port *port = tty->driver_data;
2367 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2368 struct async_icount *ic = &edge_port->icount;
2369
2370 icount->cts = ic->cts;
2371 icount->dsr = ic->dsr;
2372 icount->rng = ic->rng;
2373 icount->dcd = ic->dcd;
2374 icount->tx = ic->tx;
2375 icount->rx = ic->rx;
2376 icount->frame = ic->frame;
2377 icount->parity = ic->parity;
2378 icount->overrun = ic->overrun;
2379 icount->brk = ic->brk;
2380 icount->buf_overrun = ic->buf_overrun;
2381 return 0;
2382 }
2383
2384 static int get_serial_info(struct edgeport_port *edge_port,
2385 struct serial_struct __user *retinfo)
2386 {
2387 struct serial_struct tmp;
2388 unsigned cwait;
2389
2390 if (!retinfo)
2391 return -EFAULT;
2392
2393 cwait = edge_port->port->port.closing_wait;
2394 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2395 cwait = jiffies_to_msecs(closing_wait) / 10;
2396
2397 memset(&tmp, 0, sizeof(tmp));
2398
2399 tmp.type = PORT_16550A;
2400 tmp.line = edge_port->port->serial->minor;
2401 tmp.port = edge_port->port->number;
2402 tmp.irq = 0;
2403 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2404 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2405 tmp.baud_base = 9600;
2406 tmp.close_delay = 5*HZ;
2407 tmp.closing_wait = cwait;
2408
2409 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2410 return -EFAULT;
2411 return 0;
2412 }
2413
2414 static int edge_ioctl(struct tty_struct *tty,
2415 unsigned int cmd, unsigned long arg)
2416 {
2417 struct usb_serial_port *port = tty->driver_data;
2418 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2419 struct async_icount cnow;
2420 struct async_icount cprev;
2421
2422 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
2423
2424 switch (cmd) {
2425 case TIOCGSERIAL:
2426 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2427 return get_serial_info(edge_port,
2428 (struct serial_struct __user *) arg);
2429 case TIOCMIWAIT:
2430 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2431 cprev = edge_port->icount;
2432 while (1) {
2433 interruptible_sleep_on(&port->delta_msr_wait);
2434 /* see if a signal did it */
2435 if (signal_pending(current))
2436 return -ERESTARTSYS;
2437
2438 if (port->serial->disconnected)
2439 return -EIO;
2440
2441 cnow = edge_port->icount;
2442 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2443 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2444 return -EIO; /* no change => error */
2445 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2446 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2447 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2448 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2449 return 0;
2450 }
2451 cprev = cnow;
2452 }
2453 /* not reached */
2454 break;
2455 }
2456 return -ENOIOCTLCMD;
2457 }
2458
2459 static void edge_break(struct tty_struct *tty, int break_state)
2460 {
2461 struct usb_serial_port *port = tty->driver_data;
2462 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2463 int status;
2464 int bv = 0; /* Off */
2465
2466 tty_wait_until_sent(tty, 0);
2467
2468 if (break_state == -1)
2469 bv = 1; /* On */
2470 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2471 if (status)
2472 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2473 __func__, status);
2474 }
2475
2476 static int edge_startup(struct usb_serial *serial)
2477 {
2478 struct edgeport_serial *edge_serial;
2479 int status;
2480
2481 /* create our private serial structure */
2482 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2483 if (edge_serial == NULL) {
2484 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2485 return -ENOMEM;
2486 }
2487 mutex_init(&edge_serial->es_lock);
2488 edge_serial->serial = serial;
2489 usb_set_serial_data(serial, edge_serial);
2490
2491 status = download_fw(edge_serial);
2492 if (status) {
2493 kfree(edge_serial);
2494 return status;
2495 }
2496
2497 return 0;
2498 }
2499
2500 static void edge_disconnect(struct usb_serial *serial)
2501 {
2502 }
2503
2504 static void edge_release(struct usb_serial *serial)
2505 {
2506 kfree(usb_get_serial_data(serial));
2507 }
2508
2509 static int edge_port_probe(struct usb_serial_port *port)
2510 {
2511 struct edgeport_port *edge_port;
2512 int ret;
2513
2514 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2515 if (!edge_port)
2516 return -ENOMEM;
2517
2518 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2519 GFP_KERNEL);
2520 if (ret) {
2521 kfree(edge_port);
2522 return -ENOMEM;
2523 }
2524
2525 spin_lock_init(&edge_port->ep_lock);
2526 edge_port->port = port;
2527 edge_port->edge_serial = usb_get_serial_data(port->serial);
2528 edge_port->bUartMode = default_uart_mode;
2529
2530 usb_set_serial_port_data(port, edge_port);
2531
2532 ret = edge_create_sysfs_attrs(port);
2533 if (ret) {
2534 kfifo_free(&edge_port->write_fifo);
2535 kfree(edge_port);
2536 return ret;
2537 }
2538
2539 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2540
2541 return 0;
2542 }
2543
2544 static int edge_port_remove(struct usb_serial_port *port)
2545 {
2546 struct edgeport_port *edge_port;
2547
2548 edge_port = usb_get_serial_port_data(port);
2549
2550 edge_remove_sysfs_attrs(port);
2551 kfifo_free(&edge_port->write_fifo);
2552 kfree(edge_port);
2553
2554 return 0;
2555 }
2556
2557 /* Sysfs Attributes */
2558
2559 static ssize_t show_uart_mode(struct device *dev,
2560 struct device_attribute *attr, char *buf)
2561 {
2562 struct usb_serial_port *port = to_usb_serial_port(dev);
2563 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2564
2565 return sprintf(buf, "%d\n", edge_port->bUartMode);
2566 }
2567
2568 static ssize_t store_uart_mode(struct device *dev,
2569 struct device_attribute *attr, const char *valbuf, size_t count)
2570 {
2571 struct usb_serial_port *port = to_usb_serial_port(dev);
2572 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2573 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2574
2575 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2576
2577 if (v < 256)
2578 edge_port->bUartMode = v;
2579 else
2580 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2581
2582 return count;
2583 }
2584
2585 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2586 store_uart_mode);
2587
2588 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2589 {
2590 return device_create_file(&port->dev, &dev_attr_uart_mode);
2591 }
2592
2593 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2594 {
2595 device_remove_file(&port->dev, &dev_attr_uart_mode);
2596 return 0;
2597 }
2598
2599
2600 static struct usb_serial_driver edgeport_1port_device = {
2601 .driver = {
2602 .owner = THIS_MODULE,
2603 .name = "edgeport_ti_1",
2604 },
2605 .description = "Edgeport TI 1 port adapter",
2606 .id_table = edgeport_1port_id_table,
2607 .num_ports = 1,
2608 .open = edge_open,
2609 .close = edge_close,
2610 .throttle = edge_throttle,
2611 .unthrottle = edge_unthrottle,
2612 .attach = edge_startup,
2613 .disconnect = edge_disconnect,
2614 .release = edge_release,
2615 .port_probe = edge_port_probe,
2616 .port_remove = edge_port_remove,
2617 .ioctl = edge_ioctl,
2618 .set_termios = edge_set_termios,
2619 .tiocmget = edge_tiocmget,
2620 .tiocmset = edge_tiocmset,
2621 .get_icount = edge_get_icount,
2622 .write = edge_write,
2623 .write_room = edge_write_room,
2624 .chars_in_buffer = edge_chars_in_buffer,
2625 .break_ctl = edge_break,
2626 .read_int_callback = edge_interrupt_callback,
2627 .read_bulk_callback = edge_bulk_in_callback,
2628 .write_bulk_callback = edge_bulk_out_callback,
2629 };
2630
2631 static struct usb_serial_driver edgeport_2port_device = {
2632 .driver = {
2633 .owner = THIS_MODULE,
2634 .name = "edgeport_ti_2",
2635 },
2636 .description = "Edgeport TI 2 port adapter",
2637 .id_table = edgeport_2port_id_table,
2638 .num_ports = 2,
2639 .open = edge_open,
2640 .close = edge_close,
2641 .throttle = edge_throttle,
2642 .unthrottle = edge_unthrottle,
2643 .attach = edge_startup,
2644 .disconnect = edge_disconnect,
2645 .release = edge_release,
2646 .port_probe = edge_port_probe,
2647 .port_remove = edge_port_remove,
2648 .ioctl = edge_ioctl,
2649 .set_termios = edge_set_termios,
2650 .tiocmget = edge_tiocmget,
2651 .tiocmset = edge_tiocmset,
2652 .get_icount = edge_get_icount,
2653 .write = edge_write,
2654 .write_room = edge_write_room,
2655 .chars_in_buffer = edge_chars_in_buffer,
2656 .break_ctl = edge_break,
2657 .read_int_callback = edge_interrupt_callback,
2658 .read_bulk_callback = edge_bulk_in_callback,
2659 .write_bulk_callback = edge_bulk_out_callback,
2660 };
2661
2662 static struct usb_serial_driver * const serial_drivers[] = {
2663 &edgeport_1port_device, &edgeport_2port_device, NULL
2664 };
2665
2666 module_usb_serial_driver(serial_drivers, id_table_combined);
2667
2668 MODULE_AUTHOR(DRIVER_AUTHOR);
2669 MODULE_DESCRIPTION(DRIVER_DESC);
2670 MODULE_LICENSE("GPL");
2671 MODULE_FIRMWARE("edgeport/down3.bin");
2672
2673 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2674 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2675
2676 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2677 MODULE_PARM_DESC(ignore_cpu_rev,
2678 "Ignore the cpu revision when connecting to a device");
2679
2680 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2681 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux kernel - Deliverables
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