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1/*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14 *
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
18 *
19 * Version history:
20 *
21 * July 11, 2002 Removed 4 port device structure since all TI UMP
22 * chips have only 2 ports
23 * David Iacovelli (davidi@ionetworks.com)
24 *
25 */
26
27#include <linux/kernel.h>
28#include <linux/jiffies.h>
29#include <linux/errno.h>
30#include <linux/init.h>
31#include <linux/slab.h>
32#include <linux/tty.h>
33#include <linux/tty_driver.h>
34#include <linux/tty_flip.h>
35#include <linux/module.h>
36#include <linux/spinlock.h>
37#include <linux/mutex.h>
38#include <linux/serial.h>
39#include <linux/kfifo.h>
40#include <linux/ioctl.h>
41#include <linux/firmware.h>
42#include <linux/uaccess.h>
43#include <linux/usb.h>
44#include <linux/usb/serial.h>
45
46#include "io_16654.h"
47#include "io_usbvend.h"
48#include "io_ti.h"
49
50/*
51 * Version Information
52 */
53#define DRIVER_VERSION "v0.7mode043006"
54#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
55#define DRIVER_DESC "Edgeport USB Serial Driver"
56
57#define EPROM_PAGE_SIZE 64
58
59
60/* different hardware types */
61#define HARDWARE_TYPE_930 0
62#define HARDWARE_TYPE_TIUMP 1
63
64/* IOCTL_PRIVATE_TI_GET_MODE Definitions */
65#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
66#define TI_MODE_BOOT 1 /* Staying in boot mode */
67#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
68#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
69 transitioning to download mode */
70
71/* read urb state */
72#define EDGE_READ_URB_RUNNING 0
73#define EDGE_READ_URB_STOPPING 1
74#define EDGE_READ_URB_STOPPED 2
75
76#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
77
78#define EDGE_OUT_BUF_SIZE 1024
79
80
81/* Product information read from the Edgeport */
82struct product_info {
83 int TiMode; /* Current TI Mode */
84 __u8 hardware_type; /* Type of hardware */
85} __attribute__((packed));
86
87struct edgeport_port {
88 __u16 uart_base;
89 __u16 dma_address;
90 __u8 shadow_msr;
91 __u8 shadow_mcr;
92 __u8 shadow_lsr;
93 __u8 lsr_mask;
94 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
95 wait without data before completing
96 a read short */
97 int baud_rate;
98 int close_pending;
99 int lsr_event;
100 struct async_icount icount;
101 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
102 waiting for msr change to
103 happen */
104 struct edgeport_serial *edge_serial;
105 struct usb_serial_port *port;
106 __u8 bUartMode; /* Port type, 0: RS232, etc. */
107 spinlock_t ep_lock;
108 int ep_read_urb_state;
109 int ep_write_urb_in_use;
110 struct kfifo write_fifo;
111};
112
113struct edgeport_serial {
114 struct product_info product_info;
115 u8 TI_I2C_Type; /* Type of I2C in UMP */
116 u8 TiReadI2C; /* Set to TRUE if we have read the
117 I2c in Boot Mode */
118 struct mutex es_lock;
119 int num_ports_open;
120 struct usb_serial *serial;
121};
122
123
124/* Devices that this driver supports */
125static const struct usb_device_id edgeport_1port_id_table[] = {
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
142 { }
143};
144
145static const struct usb_device_id edgeport_2port_id_table[] = {
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
158 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
164 { }
165};
166
167/* Devices that this driver supports */
168static const struct usb_device_id id_table_combined[] = {
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
202 { }
203};
204
205MODULE_DEVICE_TABLE(usb, id_table_combined);
206
207static struct usb_driver io_driver = {
208 .name = "io_ti",
209 .probe = usb_serial_probe,
210 .disconnect = usb_serial_disconnect,
211 .id_table = id_table_combined,
212 .no_dynamic_id = 1,
213};
214
215
216static unsigned char OperationalMajorVersion;
217static unsigned char OperationalMinorVersion;
218static unsigned short OperationalBuildNumber;
219
220static int debug;
221
222static int closing_wait = EDGE_CLOSING_WAIT;
223static int ignore_cpu_rev;
224static int default_uart_mode; /* RS232 */
225
226static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
227 unsigned char *data, int length);
228
229static void stop_read(struct edgeport_port *edge_port);
230static int restart_read(struct edgeport_port *edge_port);
231
232static void edge_set_termios(struct tty_struct *tty,
233 struct usb_serial_port *port, struct ktermios *old_termios);
234static void edge_send(struct tty_struct *tty);
235
236/* sysfs attributes */
237static int edge_create_sysfs_attrs(struct usb_serial_port *port);
238static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
239
240
241static int ti_vread_sync(struct usb_device *dev, __u8 request,
242 __u16 value, __u16 index, u8 *data, int size)
243{
244 int status;
245
246 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
247 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
248 value, index, data, size, 1000);
249 if (status < 0)
250 return status;
251 if (status != size) {
252 dbg("%s - wanted to write %d, but only wrote %d",
253 __func__, size, status);
254 return -ECOMM;
255 }
256 return 0;
257}
258
259static int ti_vsend_sync(struct usb_device *dev, __u8 request,
260 __u16 value, __u16 index, u8 *data, int size)
261{
262 int status;
263
264 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
265 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
266 value, index, data, size, 1000);
267 if (status < 0)
268 return status;
269 if (status != size) {
270 dbg("%s - wanted to write %d, but only wrote %d",
271 __func__, size, status);
272 return -ECOMM;
273 }
274 return 0;
275}
276
277static int send_cmd(struct usb_device *dev, __u8 command,
278 __u8 moduleid, __u16 value, u8 *data,
279 int size)
280{
281 return ti_vsend_sync(dev, command, value, moduleid, data, size);
282}
283
284/* clear tx/rx buffers and fifo in TI UMP */
285static int purge_port(struct usb_serial_port *port, __u16 mask)
286{
287 int port_number = port->number - port->serial->minor;
288
289 dbg("%s - port %d, mask %x", __func__, port_number, mask);
290
291 return send_cmd(port->serial->dev,
292 UMPC_PURGE_PORT,
293 (__u8)(UMPM_UART1_PORT + port_number),
294 mask,
295 NULL,
296 0);
297}
298
299/**
300 * read_download_mem - Read edgeport memory from TI chip
301 * @dev: usb device pointer
302 * @start_address: Device CPU address at which to read
303 * @length: Length of above data
304 * @address_type: Can read both XDATA and I2C
305 * @buffer: pointer to input data buffer
306 */
307static int read_download_mem(struct usb_device *dev, int start_address,
308 int length, __u8 address_type, __u8 *buffer)
309{
310 int status = 0;
311 __u8 read_length;
312 __be16 be_start_address;
313
314 dbg("%s - @ %x for %d", __func__, start_address, length);
315
316 /* Read in blocks of 64 bytes
317 * (TI firmware can't handle more than 64 byte reads)
318 */
319 while (length) {
320 if (length > 64)
321 read_length = 64;
322 else
323 read_length = (__u8)length;
324
325 if (read_length > 1) {
326 dbg("%s - @ %x for %d", __func__,
327 start_address, read_length);
328 }
329 be_start_address = cpu_to_be16(start_address);
330 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
331 (__u16)address_type,
332 (__force __u16)be_start_address,
333 buffer, read_length);
334
335 if (status) {
336 dbg("%s - ERROR %x", __func__, status);
337 return status;
338 }
339
340 if (read_length > 1)
341 usb_serial_debug_data(debug, &dev->dev, __func__,
342 read_length, buffer);
343
344 /* Update pointers/length */
345 start_address += read_length;
346 buffer += read_length;
347 length -= read_length;
348 }
349
350 return status;
351}
352
353static int read_ram(struct usb_device *dev, int start_address,
354 int length, __u8 *buffer)
355{
356 return read_download_mem(dev, start_address, length,
357 DTK_ADDR_SPACE_XDATA, buffer);
358}
359
360/* Read edgeport memory to a given block */
361static int read_boot_mem(struct edgeport_serial *serial,
362 int start_address, int length, __u8 *buffer)
363{
364 int status = 0;
365 int i;
366
367 for (i = 0; i < length; i++) {
368 status = ti_vread_sync(serial->serial->dev,
369 UMPC_MEMORY_READ, serial->TI_I2C_Type,
370 (__u16)(start_address+i), &buffer[i], 0x01);
371 if (status) {
372 dbg("%s - ERROR %x", __func__, status);
373 return status;
374 }
375 }
376
377 dbg("%s - start_address = %x, length = %d",
378 __func__, start_address, length);
379 usb_serial_debug_data(debug, &serial->serial->dev->dev,
380 __func__, length, buffer);
381
382 serial->TiReadI2C = 1;
383
384 return status;
385}
386
387/* Write given block to TI EPROM memory */
388static int write_boot_mem(struct edgeport_serial *serial,
389 int start_address, int length, __u8 *buffer)
390{
391 int status = 0;
392 int i;
393 u8 *temp;
394
395 /* Must do a read before write */
396 if (!serial->TiReadI2C) {
397 temp = kmalloc(1, GFP_KERNEL);
398 if (!temp) {
399 dev_err(&serial->serial->dev->dev,
400 "%s - out of memory\n", __func__);
401 return -ENOMEM;
402 }
403 status = read_boot_mem(serial, 0, 1, temp);
404 kfree(temp);
405 if (status)
406 return status;
407 }
408
409 for (i = 0; i < length; ++i) {
410 status = ti_vsend_sync(serial->serial->dev,
411 UMPC_MEMORY_WRITE, buffer[i],
412 (__u16)(i + start_address), NULL, 0);
413 if (status)
414 return status;
415 }
416
417 dbg("%s - start_sddr = %x, length = %d",
418 __func__, start_address, length);
419 usb_serial_debug_data(debug, &serial->serial->dev->dev,
420 __func__, length, buffer);
421
422 return status;
423}
424
425
426/* Write edgeport I2C memory to TI chip */
427static int write_i2c_mem(struct edgeport_serial *serial,
428 int start_address, int length, __u8 address_type, __u8 *buffer)
429{
430 int status = 0;
431 int write_length;
432 __be16 be_start_address;
433
434 /* We can only send a maximum of 1 aligned byte page at a time */
435
436 /* calculate the number of bytes left in the first page */
437 write_length = EPROM_PAGE_SIZE -
438 (start_address & (EPROM_PAGE_SIZE - 1));
439
440 if (write_length > length)
441 write_length = length;
442
443 dbg("%s - BytesInFirstPage Addr = %x, length = %d",
444 __func__, start_address, write_length);
445 usb_serial_debug_data(debug, &serial->serial->dev->dev,
446 __func__, write_length, buffer);
447
448 /* Write first page */
449 be_start_address = cpu_to_be16(start_address);
450 status = ti_vsend_sync(serial->serial->dev,
451 UMPC_MEMORY_WRITE, (__u16)address_type,
452 (__force __u16)be_start_address,
453 buffer, write_length);
454 if (status) {
455 dbg("%s - ERROR %d", __func__, status);
456 return status;
457 }
458
459 length -= write_length;
460 start_address += write_length;
461 buffer += write_length;
462
463 /* We should be aligned now -- can write
464 max page size bytes at a time */
465 while (length) {
466 if (length > EPROM_PAGE_SIZE)
467 write_length = EPROM_PAGE_SIZE;
468 else
469 write_length = length;
470
471 dbg("%s - Page Write Addr = %x, length = %d",
472 __func__, start_address, write_length);
473 usb_serial_debug_data(debug, &serial->serial->dev->dev,
474 __func__, write_length, buffer);
475
476 /* Write next page */
477 be_start_address = cpu_to_be16(start_address);
478 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
479 (__u16)address_type,
480 (__force __u16)be_start_address,
481 buffer, write_length);
482 if (status) {
483 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
484 __func__, status);
485 return status;
486 }
487
488 length -= write_length;
489 start_address += write_length;
490 buffer += write_length;
491 }
492 return status;
493}
494
495/* Examine the UMP DMA registers and LSR
496 *
497 * Check the MSBit of the X and Y DMA byte count registers.
498 * A zero in this bit indicates that the TX DMA buffers are empty
499 * then check the TX Empty bit in the UART.
500 */
501static int tx_active(struct edgeport_port *port)
502{
503 int status;
504 struct out_endpoint_desc_block *oedb;
505 __u8 *lsr;
506 int bytes_left = 0;
507
508 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
509 if (!oedb) {
510 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
511 return -ENOMEM;
512 }
513
514 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
515 as not all platforms can do DMA
516 from stack */
517 if (!lsr) {
518 kfree(oedb);
519 return -ENOMEM;
520 }
521 /* Read the DMA Count Registers */
522 status = read_ram(port->port->serial->dev, port->dma_address,
523 sizeof(*oedb), (void *)oedb);
524 if (status)
525 goto exit_is_tx_active;
526
527 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount);
528
529 /* and the LSR */
530 status = read_ram(port->port->serial->dev,
531 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
532
533 if (status)
534 goto exit_is_tx_active;
535 dbg("%s - LSR = 0x%X", __func__, *lsr);
536
537 /* If either buffer has data or we are transmitting then return TRUE */
538 if ((oedb->XByteCount & 0x80) != 0)
539 bytes_left += 64;
540
541 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
542 bytes_left += 1;
543
544 /* We return Not Active if we get any kind of error */
545exit_is_tx_active:
546 dbg("%s - return %d", __func__, bytes_left);
547
548 kfree(lsr);
549 kfree(oedb);
550 return bytes_left;
551}
552
553static void chase_port(struct edgeport_port *port, unsigned long timeout,
554 int flush)
555{
556 int baud_rate;
557 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
558 wait_queue_t wait;
559 unsigned long flags;
560
561 if (!timeout)
562 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
563
564 /* wait for data to drain from the buffer */
565 spin_lock_irqsave(&port->ep_lock, flags);
566 init_waitqueue_entry(&wait, current);
567 add_wait_queue(&tty->write_wait, &wait);
568 for (;;) {
569 set_current_state(TASK_INTERRUPTIBLE);
570 if (kfifo_len(&port->write_fifo) == 0
571 || timeout == 0 || signal_pending(current)
572 || !usb_get_intfdata(port->port->serial->interface))
573 /* disconnect */
574 break;
575 spin_unlock_irqrestore(&port->ep_lock, flags);
576 timeout = schedule_timeout(timeout);
577 spin_lock_irqsave(&port->ep_lock, flags);
578 }
579 set_current_state(TASK_RUNNING);
580 remove_wait_queue(&tty->write_wait, &wait);
581 if (flush)
582 kfifo_reset_out(&port->write_fifo);
583 spin_unlock_irqrestore(&port->ep_lock, flags);
584 tty_kref_put(tty);
585
586 /* wait for data to drain from the device */
587 timeout += jiffies;
588 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
589 && usb_get_intfdata(port->port->serial->interface)) {
590 /* not disconnected */
591 if (!tx_active(port))
592 break;
593 msleep(10);
594 }
595
596 /* disconnected */
597 if (!usb_get_intfdata(port->port->serial->interface))
598 return;
599
600 /* wait one more character time, based on baud rate */
601 /* (tx_active doesn't seem to wait for the last byte) */
602 baud_rate = port->baud_rate;
603 if (baud_rate == 0)
604 baud_rate = 50;
605 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
606}
607
608static int choose_config(struct usb_device *dev)
609{
610 /*
611 * There may be multiple configurations on this device, in which case
612 * we would need to read and parse all of them to find out which one
613 * we want. However, we just support one config at this point,
614 * configuration # 1, which is Config Descriptor 0.
615 */
616
617 dbg("%s - Number of Interfaces = %d",
618 __func__, dev->config->desc.bNumInterfaces);
619 dbg("%s - MAX Power = %d",
620 __func__, dev->config->desc.bMaxPower * 2);
621
622 if (dev->config->desc.bNumInterfaces != 1) {
623 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
624 __func__);
625 return -ENODEV;
626 }
627
628 return 0;
629}
630
631static int read_rom(struct edgeport_serial *serial,
632 int start_address, int length, __u8 *buffer)
633{
634 int status;
635
636 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
637 status = read_download_mem(serial->serial->dev,
638 start_address,
639 length,
640 serial->TI_I2C_Type,
641 buffer);
642 } else {
643 status = read_boot_mem(serial, start_address, length,
644 buffer);
645 }
646 return status;
647}
648
649static int write_rom(struct edgeport_serial *serial, int start_address,
650 int length, __u8 *buffer)
651{
652 if (serial->product_info.TiMode == TI_MODE_BOOT)
653 return write_boot_mem(serial, start_address, length,
654 buffer);
655
656 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
657 return write_i2c_mem(serial, start_address, length,
658 serial->TI_I2C_Type, buffer);
659 return -EINVAL;
660}
661
662
663
664/* Read a descriptor header from I2C based on type */
665static int get_descriptor_addr(struct edgeport_serial *serial,
666 int desc_type, struct ti_i2c_desc *rom_desc)
667{
668 int start_address;
669 int status;
670
671 /* Search for requested descriptor in I2C */
672 start_address = 2;
673 do {
674 status = read_rom(serial,
675 start_address,
676 sizeof(struct ti_i2c_desc),
677 (__u8 *)rom_desc);
678 if (status)
679 return 0;
680
681 if (rom_desc->Type == desc_type)
682 return start_address;
683
684 start_address = start_address + sizeof(struct ti_i2c_desc)
685 + rom_desc->Size;
686
687 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
688
689 return 0;
690}
691
692/* Validate descriptor checksum */
693static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
694{
695 __u16 i;
696 __u8 cs = 0;
697
698 for (i = 0; i < rom_desc->Size; i++)
699 cs = (__u8)(cs + buffer[i]);
700
701 if (cs != rom_desc->CheckSum) {
702 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
703 return -EINVAL;
704 }
705 return 0;
706}
707
708/* Make sure that the I2C image is good */
709static int check_i2c_image(struct edgeport_serial *serial)
710{
711 struct device *dev = &serial->serial->dev->dev;
712 int status = 0;
713 struct ti_i2c_desc *rom_desc;
714 int start_address = 2;
715 __u8 *buffer;
716 __u16 ttype;
717
718 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
719 if (!rom_desc) {
720 dev_err(dev, "%s - out of memory\n", __func__);
721 return -ENOMEM;
722 }
723 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
724 if (!buffer) {
725 dev_err(dev, "%s - out of memory when allocating buffer\n",
726 __func__);
727 kfree(rom_desc);
728 return -ENOMEM;
729 }
730
731 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
732 status = read_rom(serial, 0, 1, buffer);
733 if (status)
734 goto out;
735
736 if (*buffer != UMP5152 && *buffer != UMP3410) {
737 dev_err(dev, "%s - invalid buffer signature\n", __func__);
738 status = -ENODEV;
739 goto out;
740 }
741
742 do {
743 /* Validate the I2C */
744 status = read_rom(serial,
745 start_address,
746 sizeof(struct ti_i2c_desc),
747 (__u8 *)rom_desc);
748 if (status)
749 break;
750
751 if ((start_address + sizeof(struct ti_i2c_desc) +
752 rom_desc->Size) > TI_MAX_I2C_SIZE) {
753 status = -ENODEV;
754 dbg("%s - structure too big, erroring out.", __func__);
755 break;
756 }
757
758 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
759
760 /* Skip type 2 record */
761 ttype = rom_desc->Type & 0x0f;
762 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
763 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
764 /* Read the descriptor data */
765 status = read_rom(serial, start_address +
766 sizeof(struct ti_i2c_desc),
767 rom_desc->Size, buffer);
768 if (status)
769 break;
770
771 status = valid_csum(rom_desc, buffer);
772 if (status)
773 break;
774 }
775 start_address = start_address + sizeof(struct ti_i2c_desc) +
776 rom_desc->Size;
777
778 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
779 (start_address < TI_MAX_I2C_SIZE));
780
781 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
782 (start_address > TI_MAX_I2C_SIZE))
783 status = -ENODEV;
784
785out:
786 kfree(buffer);
787 kfree(rom_desc);
788 return status;
789}
790
791static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
792{
793 int status;
794 int start_address;
795 struct ti_i2c_desc *rom_desc;
796 struct edge_ti_manuf_descriptor *desc;
797
798 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
799 if (!rom_desc) {
800 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
801 __func__);
802 return -ENOMEM;
803 }
804 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
805 rom_desc);
806
807 if (!start_address) {
808 dbg("%s - Edge Descriptor not found in I2C", __func__);
809 status = -ENODEV;
810 goto exit;
811 }
812
813 /* Read the descriptor data */
814 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
815 rom_desc->Size, buffer);
816 if (status)
817 goto exit;
818
819 status = valid_csum(rom_desc, buffer);
820
821 desc = (struct edge_ti_manuf_descriptor *)buffer;
822 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig);
823 dbg("%s - Version %d", __func__, desc->Version);
824 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev);
825 dbg("%s - NumPorts %d", __func__, desc->NumPorts);
826 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts);
827 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts);
828
829exit:
830 kfree(rom_desc);
831 return status;
832}
833
834/* Build firmware header used for firmware update */
835static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
836{
837 __u8 *buffer;
838 int buffer_size;
839 int i;
840 int err;
841 __u8 cs = 0;
842 struct ti_i2c_desc *i2c_header;
843 struct ti_i2c_image_header *img_header;
844 struct ti_i2c_firmware_rec *firmware_rec;
845 const struct firmware *fw;
846 const char *fw_name = "edgeport/down3.bin";
847
848 /* In order to update the I2C firmware we must change the type 2 record
849 * to type 0xF2. This will force the UMP to come up in Boot Mode.
850 * Then while in boot mode, the driver will download the latest
851 * firmware (padded to 15.5k) into the UMP ram. And finally when the
852 * device comes back up in download mode the driver will cause the new
853 * firmware to be copied from the UMP Ram to I2C and the firmware will
854 * update the record type from 0xf2 to 0x02.
855 */
856
857 /* Allocate a 15.5k buffer + 2 bytes for version number
858 * (Firmware Record) */
859 buffer_size = (((1024 * 16) - 512 ) +
860 sizeof(struct ti_i2c_firmware_rec));
861
862 buffer = kmalloc(buffer_size, GFP_KERNEL);
863 if (!buffer) {
864 dev_err(dev, "%s - out of memory\n", __func__);
865 return -ENOMEM;
866 }
867
868 // Set entire image of 0xffs
869 memset(buffer, 0xff, buffer_size);
870
871 err = request_firmware(&fw, fw_name, dev);
872 if (err) {
873 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
874 fw_name, err);
875 kfree(buffer);
876 return err;
877 }
878
879 /* Save Download Version Number */
880 OperationalMajorVersion = fw->data[0];
881 OperationalMinorVersion = fw->data[1];
882 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
883
884 /* Copy version number into firmware record */
885 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
886
887 firmware_rec->Ver_Major = OperationalMajorVersion;
888 firmware_rec->Ver_Minor = OperationalMinorVersion;
889
890 /* Pointer to fw_down memory image */
891 img_header = (struct ti_i2c_image_header *)&fw->data[4];
892
893 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
894 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
895 le16_to_cpu(img_header->Length));
896
897 release_firmware(fw);
898
899 for (i=0; i < buffer_size; i++) {
900 cs = (__u8)(cs + buffer[i]);
901 }
902
903 kfree(buffer);
904
905 /* Build new header */
906 i2c_header = (struct ti_i2c_desc *)header;
907 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
908
909 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
910 i2c_header->Size = (__u16)buffer_size;
911 i2c_header->CheckSum = cs;
912 firmware_rec->Ver_Major = OperationalMajorVersion;
913 firmware_rec->Ver_Minor = OperationalMinorVersion;
914
915 return 0;
916}
917
918/* Try to figure out what type of I2c we have */
919static int i2c_type_bootmode(struct edgeport_serial *serial)
920{
921 int status;
922 u8 *data;
923
924 data = kmalloc(1, GFP_KERNEL);
925 if (!data) {
926 dev_err(&serial->serial->dev->dev,
927 "%s - out of memory\n", __func__);
928 return -ENOMEM;
929 }
930
931 /* Try to read type 2 */
932 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
933 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
934 if (status)
935 dbg("%s - read 2 status error = %d", __func__, status);
936 else
937 dbg("%s - read 2 data = 0x%x", __func__, *data);
938 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
939 dbg("%s - ROM_TYPE_II", __func__);
940 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
941 goto out;
942 }
943
944 /* Try to read type 3 */
945 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
946 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
947 if (status)
948 dbg("%s - read 3 status error = %d", __func__, status);
949 else
950 dbg("%s - read 2 data = 0x%x", __func__, *data);
951 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
952 dbg("%s - ROM_TYPE_III", __func__);
953 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
954 goto out;
955 }
956
957 dbg("%s - Unknown", __func__);
958 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
959 status = -ENODEV;
960out:
961 kfree(data);
962 return status;
963}
964
965static int bulk_xfer(struct usb_serial *serial, void *buffer,
966 int length, int *num_sent)
967{
968 int status;
969
970 status = usb_bulk_msg(serial->dev,
971 usb_sndbulkpipe(serial->dev,
972 serial->port[0]->bulk_out_endpointAddress),
973 buffer, length, num_sent, 1000);
974 return status;
975}
976
977/* Download given firmware image to the device (IN BOOT MODE) */
978static int download_code(struct edgeport_serial *serial, __u8 *image,
979 int image_length)
980{
981 int status = 0;
982 int pos;
983 int transfer;
984 int done;
985
986 /* Transfer firmware image */
987 for (pos = 0; pos < image_length; ) {
988 /* Read the next buffer from file */
989 transfer = image_length - pos;
990 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
991 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
992
993 /* Transfer data */
994 status = bulk_xfer(serial->serial, &image[pos],
995 transfer, &done);
996 if (status)
997 break;
998 /* Advance buffer pointer */
999 pos += done;
1000 }
1001
1002 return status;
1003}
1004
1005/* FIXME!!! */
1006static int config_boot_dev(struct usb_device *dev)
1007{
1008 return 0;
1009}
1010
1011static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1012{
1013 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1014}
1015
1016/**
1017 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1018 *
1019 * This routine downloads the main operating code into the TI5052, using the
1020 * boot code already burned into E2PROM or ROM.
1021 */
1022static int download_fw(struct edgeport_serial *serial)
1023{
1024 struct device *dev = &serial->serial->dev->dev;
1025 int status = 0;
1026 int start_address;
1027 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1028 struct usb_interface_descriptor *interface;
1029 int download_cur_ver;
1030 int download_new_ver;
1031
1032 /* This routine is entered by both the BOOT mode and the Download mode
1033 * We can determine which code is running by the reading the config
1034 * descriptor and if we have only one bulk pipe it is in boot mode
1035 */
1036 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1037
1038 /* Default to type 2 i2c */
1039 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1040
1041 status = choose_config(serial->serial->dev);
1042 if (status)
1043 return status;
1044
1045 interface = &serial->serial->interface->cur_altsetting->desc;
1046 if (!interface) {
1047 dev_err(dev, "%s - no interface set, error!\n", __func__);
1048 return -ENODEV;
1049 }
1050
1051 /*
1052 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1053 * if we have more than one endpoint we are definitely in download
1054 * mode
1055 */
1056 if (interface->bNumEndpoints > 1)
1057 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1058 else
1059 /* Otherwise we will remain in configuring mode */
1060 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1061
1062 /********************************************************************/
1063 /* Download Mode */
1064 /********************************************************************/
1065 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1066 struct ti_i2c_desc *rom_desc;
1067
1068 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1069
1070 status = check_i2c_image(serial);
1071 if (status) {
1072 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1073 return status;
1074 }
1075
1076 /* Validate Hardware version number
1077 * Read Manufacturing Descriptor from TI Based Edgeport
1078 */
1079 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1080 if (!ti_manuf_desc) {
1081 dev_err(dev, "%s - out of memory.\n", __func__);
1082 return -ENOMEM;
1083 }
1084 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1085 if (status) {
1086 kfree(ti_manuf_desc);
1087 return status;
1088 }
1089
1090 /* Check version number of ION descriptor */
1091 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1092 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1093 __func__, ti_cpu_rev(ti_manuf_desc));
1094 kfree(ti_manuf_desc);
1095 return -EINVAL;
1096 }
1097
1098 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1099 if (!rom_desc) {
1100 dev_err(dev, "%s - out of memory.\n", __func__);
1101 kfree(ti_manuf_desc);
1102 return -ENOMEM;
1103 }
1104
1105 /* Search for type 2 record (firmware record) */
1106 start_address = get_descriptor_addr(serial,
1107 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1108 if (start_address != 0) {
1109 struct ti_i2c_firmware_rec *firmware_version;
1110 u8 *record;
1111
1112 dbg("%s - Found Type FIRMWARE (Type 2) record",
1113 __func__);
1114
1115 firmware_version = kmalloc(sizeof(*firmware_version),
1116 GFP_KERNEL);
1117 if (!firmware_version) {
1118 dev_err(dev, "%s - out of memory.\n", __func__);
1119 kfree(rom_desc);
1120 kfree(ti_manuf_desc);
1121 return -ENOMEM;
1122 }
1123
1124 /* Validate version number
1125 * Read the descriptor data
1126 */
1127 status = read_rom(serial, start_address +
1128 sizeof(struct ti_i2c_desc),
1129 sizeof(struct ti_i2c_firmware_rec),
1130 (__u8 *)firmware_version);
1131 if (status) {
1132 kfree(firmware_version);
1133 kfree(rom_desc);
1134 kfree(ti_manuf_desc);
1135 return status;
1136 }
1137
1138 /* Check version number of download with current
1139 version in I2c */
1140 download_cur_ver = (firmware_version->Ver_Major << 8) +
1141 (firmware_version->Ver_Minor);
1142 download_new_ver = (OperationalMajorVersion << 8) +
1143 (OperationalMinorVersion);
1144
1145 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d",
1146 __func__,
1147 firmware_version->Ver_Major,
1148 firmware_version->Ver_Minor,
1149 OperationalMajorVersion,
1150 OperationalMinorVersion);
1151
1152 /* Check if we have an old version in the I2C and
1153 update if necessary */
1154 if (download_cur_ver < download_new_ver) {
1155 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1156 __func__,
1157 firmware_version->Ver_Major,
1158 firmware_version->Ver_Minor,
1159 OperationalMajorVersion,
1160 OperationalMinorVersion);
1161
1162 record = kmalloc(1, GFP_KERNEL);
1163 if (!record) {
1164 dev_err(dev, "%s - out of memory.\n",
1165 __func__);
1166 kfree(firmware_version);
1167 kfree(rom_desc);
1168 kfree(ti_manuf_desc);
1169 return -ENOMEM;
1170 }
1171 /* In order to update the I2C firmware we must
1172 * change the type 2 record to type 0xF2. This
1173 * will force the UMP to come up in Boot Mode.
1174 * Then while in boot mode, the driver will
1175 * download the latest firmware (padded to
1176 * 15.5k) into the UMP ram. Finally when the
1177 * device comes back up in download mode the
1178 * driver will cause the new firmware to be
1179 * copied from the UMP Ram to I2C and the
1180 * firmware will update the record type from
1181 * 0xf2 to 0x02.
1182 */
1183 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1184
1185 /* Change the I2C Firmware record type to
1186 0xf2 to trigger an update */
1187 status = write_rom(serial, start_address,
1188 sizeof(*record), record);
1189 if (status) {
1190 kfree(record);
1191 kfree(firmware_version);
1192 kfree(rom_desc);
1193 kfree(ti_manuf_desc);
1194 return status;
1195 }
1196
1197 /* verify the write -- must do this in order
1198 * for write to complete before we do the
1199 * hardware reset
1200 */
1201 status = read_rom(serial,
1202 start_address,
1203 sizeof(*record),
1204 record);
1205 if (status) {
1206 kfree(record);
1207 kfree(firmware_version);
1208 kfree(rom_desc);
1209 kfree(ti_manuf_desc);
1210 return status;
1211 }
1212
1213 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1214 dev_err(dev,
1215 "%s - error resetting device\n",
1216 __func__);
1217 kfree(record);
1218 kfree(firmware_version);
1219 kfree(rom_desc);
1220 kfree(ti_manuf_desc);
1221 return -ENODEV;
1222 }
1223
1224 dbg("%s - HARDWARE RESET", __func__);
1225
1226 /* Reset UMP -- Back to BOOT MODE */
1227 status = ti_vsend_sync(serial->serial->dev,
1228 UMPC_HARDWARE_RESET,
1229 0, 0, NULL, 0);
1230
1231 dbg("%s - HARDWARE RESET return %d",
1232 __func__, status);
1233
1234 /* return an error on purpose. */
1235 kfree(record);
1236 kfree(firmware_version);
1237 kfree(rom_desc);
1238 kfree(ti_manuf_desc);
1239 return -ENODEV;
1240 }
1241 kfree(firmware_version);
1242 }
1243 /* Search for type 0xF2 record (firmware blank record) */
1244 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1245#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1246 sizeof(struct ti_i2c_firmware_rec))
1247 __u8 *header;
1248 __u8 *vheader;
1249
1250 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1251 if (!header) {
1252 dev_err(dev, "%s - out of memory.\n", __func__);
1253 kfree(rom_desc);
1254 kfree(ti_manuf_desc);
1255 return -ENOMEM;
1256 }
1257
1258 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1259 if (!vheader) {
1260 dev_err(dev, "%s - out of memory.\n", __func__);
1261 kfree(header);
1262 kfree(rom_desc);
1263 kfree(ti_manuf_desc);
1264 return -ENOMEM;
1265 }
1266
1267 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1268 __func__);
1269
1270 /*
1271 * In order to update the I2C firmware we must change
1272 * the type 2 record to type 0xF2. This will force the
1273 * UMP to come up in Boot Mode. Then while in boot
1274 * mode, the driver will download the latest firmware
1275 * (padded to 15.5k) into the UMP ram. Finally when the
1276 * device comes back up in download mode the driver
1277 * will cause the new firmware to be copied from the
1278 * UMP Ram to I2C and the firmware will update the
1279 * record type from 0xf2 to 0x02.
1280 */
1281 status = build_i2c_fw_hdr(header, dev);
1282 if (status) {
1283 kfree(vheader);
1284 kfree(header);
1285 kfree(rom_desc);
1286 kfree(ti_manuf_desc);
1287 return -EINVAL;
1288 }
1289
1290 /* Update I2C with type 0xf2 record with correct
1291 size and checksum */
1292 status = write_rom(serial,
1293 start_address,
1294 HEADER_SIZE,
1295 header);
1296 if (status) {
1297 kfree(vheader);
1298 kfree(header);
1299 kfree(rom_desc);
1300 kfree(ti_manuf_desc);
1301 return -EINVAL;
1302 }
1303
1304 /* verify the write -- must do this in order for
1305 write to complete before we do the hardware reset */
1306 status = read_rom(serial, start_address,
1307 HEADER_SIZE, vheader);
1308
1309 if (status) {
1310 dbg("%s - can't read header back", __func__);
1311 kfree(vheader);
1312 kfree(header);
1313 kfree(rom_desc);
1314 kfree(ti_manuf_desc);
1315 return status;
1316 }
1317 if (memcmp(vheader, header, HEADER_SIZE)) {
1318 dbg("%s - write download record failed",
1319 __func__);
1320 kfree(vheader);
1321 kfree(header);
1322 kfree(rom_desc);
1323 kfree(ti_manuf_desc);
1324 return -EINVAL;
1325 }
1326
1327 kfree(vheader);
1328 kfree(header);
1329
1330 dbg("%s - Start firmware update", __func__);
1331
1332 /* Tell firmware to copy download image into I2C */
1333 status = ti_vsend_sync(serial->serial->dev,
1334 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1335
1336 dbg("%s - Update complete 0x%x", __func__, status);
1337 if (status) {
1338 dev_err(dev,
1339 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1340 __func__);
1341 kfree(rom_desc);
1342 kfree(ti_manuf_desc);
1343 return status;
1344 }
1345 }
1346
1347 // The device is running the download code
1348 kfree(rom_desc);
1349 kfree(ti_manuf_desc);
1350 return 0;
1351 }
1352
1353 /********************************************************************/
1354 /* Boot Mode */
1355 /********************************************************************/
1356 dbg("%s - RUNNING IN BOOT MODE", __func__);
1357
1358 /* Configure the TI device so we can use the BULK pipes for download */
1359 status = config_boot_dev(serial->serial->dev);
1360 if (status)
1361 return status;
1362
1363 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1364 != USB_VENDOR_ID_ION) {
1365 dbg("%s - VID = 0x%x", __func__,
1366 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1367 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1368 goto stayinbootmode;
1369 }
1370
1371 /* We have an ION device (I2c Must be programmed)
1372 Determine I2C image type */
1373 if (i2c_type_bootmode(serial))
1374 goto stayinbootmode;
1375
1376 /* Check for ION Vendor ID and that the I2C is valid */
1377 if (!check_i2c_image(serial)) {
1378 struct ti_i2c_image_header *header;
1379 int i;
1380 __u8 cs = 0;
1381 __u8 *buffer;
1382 int buffer_size;
1383 int err;
1384 const struct firmware *fw;
1385 const char *fw_name = "edgeport/down3.bin";
1386
1387 /* Validate Hardware version number
1388 * Read Manufacturing Descriptor from TI Based Edgeport
1389 */
1390 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1391 if (!ti_manuf_desc) {
1392 dev_err(dev, "%s - out of memory.\n", __func__);
1393 return -ENOMEM;
1394 }
1395 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1396 if (status) {
1397 kfree(ti_manuf_desc);
1398 goto stayinbootmode;
1399 }
1400
1401 /* Check for version 2 */
1402 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1403 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1404 __func__, ti_cpu_rev(ti_manuf_desc));
1405 kfree(ti_manuf_desc);
1406 goto stayinbootmode;
1407 }
1408
1409 kfree(ti_manuf_desc);
1410
1411 /*
1412 * In order to update the I2C firmware we must change the type
1413 * 2 record to type 0xF2. This will force the UMP to come up
1414 * in Boot Mode. Then while in boot mode, the driver will
1415 * download the latest firmware (padded to 15.5k) into the
1416 * UMP ram. Finally when the device comes back up in download
1417 * mode the driver will cause the new firmware to be copied
1418 * from the UMP Ram to I2C and the firmware will update the
1419 * record type from 0xf2 to 0x02.
1420 *
1421 * Do we really have to copy the whole firmware image,
1422 * or could we do this in place!
1423 */
1424
1425 /* Allocate a 15.5k buffer + 3 byte header */
1426 buffer_size = (((1024 * 16) - 512) +
1427 sizeof(struct ti_i2c_image_header));
1428 buffer = kmalloc(buffer_size, GFP_KERNEL);
1429 if (!buffer) {
1430 dev_err(dev, "%s - out of memory\n", __func__);
1431 return -ENOMEM;
1432 }
1433
1434 /* Initialize the buffer to 0xff (pad the buffer) */
1435 memset(buffer, 0xff, buffer_size);
1436
1437 err = request_firmware(&fw, fw_name, dev);
1438 if (err) {
1439 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1440 fw_name, err);
1441 kfree(buffer);
1442 return err;
1443 }
1444 memcpy(buffer, &fw->data[4], fw->size - 4);
1445 release_firmware(fw);
1446
1447 for (i = sizeof(struct ti_i2c_image_header);
1448 i < buffer_size; i++) {
1449 cs = (__u8)(cs + buffer[i]);
1450 }
1451
1452 header = (struct ti_i2c_image_header *)buffer;
1453
1454 /* update length and checksum after padding */
1455 header->Length = cpu_to_le16((__u16)(buffer_size -
1456 sizeof(struct ti_i2c_image_header)));
1457 header->CheckSum = cs;
1458
1459 /* Download the operational code */
1460 dbg("%s - Downloading operational code image (TI UMP)",
1461 __func__);
1462 status = download_code(serial, buffer, buffer_size);
1463
1464 kfree(buffer);
1465
1466 if (status) {
1467 dbg("%s - Error downloading operational code image",
1468 __func__);
1469 return status;
1470 }
1471
1472 /* Device will reboot */
1473 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1474
1475 dbg("%s - Download successful -- Device rebooting...",
1476 __func__);
1477
1478 /* return an error on purpose */
1479 return -ENODEV;
1480 }
1481
1482stayinbootmode:
1483 /* Eprom is invalid or blank stay in boot mode */
1484 dbg("%s - STAYING IN BOOT MODE", __func__);
1485 serial->product_info.TiMode = TI_MODE_BOOT;
1486
1487 return 0;
1488}
1489
1490
1491static int ti_do_config(struct edgeport_port *port, int feature, int on)
1492{
1493 int port_number = port->port->number - port->port->serial->minor;
1494 on = !!on; /* 1 or 0 not bitmask */
1495 return send_cmd(port->port->serial->dev,
1496 feature, (__u8)(UMPM_UART1_PORT + port_number),
1497 on, NULL, 0);
1498}
1499
1500
1501static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1502{
1503 int status = 0;
1504
1505 dbg("%s - %x", __func__, mcr);
1506
1507 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1508 if (status)
1509 return status;
1510 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1511 if (status)
1512 return status;
1513 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1514}
1515
1516/* Convert TI LSR to standard UART flags */
1517static __u8 map_line_status(__u8 ti_lsr)
1518{
1519 __u8 lsr = 0;
1520
1521#define MAP_FLAG(flagUmp, flagUart) \
1522 if (ti_lsr & flagUmp) \
1523 lsr |= flagUart;
1524
1525 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1526 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1527 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1528 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1529 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1530 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1531
1532#undef MAP_FLAG
1533
1534 return lsr;
1535}
1536
1537static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1538{
1539 struct async_icount *icount;
1540 struct tty_struct *tty;
1541
1542 dbg("%s - %02x", __func__, msr);
1543
1544 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1545 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1546 icount = &edge_port->icount;
1547
1548 /* update input line counters */
1549 if (msr & EDGEPORT_MSR_DELTA_CTS)
1550 icount->cts++;
1551 if (msr & EDGEPORT_MSR_DELTA_DSR)
1552 icount->dsr++;
1553 if (msr & EDGEPORT_MSR_DELTA_CD)
1554 icount->dcd++;
1555 if (msr & EDGEPORT_MSR_DELTA_RI)
1556 icount->rng++;
1557 wake_up_interruptible(&edge_port->delta_msr_wait);
1558 }
1559
1560 /* Save the new modem status */
1561 edge_port->shadow_msr = msr & 0xf0;
1562
1563 tty = tty_port_tty_get(&edge_port->port->port);
1564 /* handle CTS flow control */
1565 if (tty && C_CRTSCTS(tty)) {
1566 if (msr & EDGEPORT_MSR_CTS) {
1567 tty->hw_stopped = 0;
1568 tty_wakeup(tty);
1569 } else {
1570 tty->hw_stopped = 1;
1571 }
1572 }
1573 tty_kref_put(tty);
1574}
1575
1576static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1577 __u8 lsr, __u8 data)
1578{
1579 struct async_icount *icount;
1580 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1581 LSR_FRM_ERR | LSR_BREAK));
1582 struct tty_struct *tty;
1583
1584 dbg("%s - %02x", __func__, new_lsr);
1585
1586 edge_port->shadow_lsr = lsr;
1587
1588 if (new_lsr & LSR_BREAK)
1589 /*
1590 * Parity and Framing errors only count if they
1591 * occur exclusive of a break being received.
1592 */
1593 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1594
1595 /* Place LSR data byte into Rx buffer */
1596 if (lsr_data) {
1597 tty = tty_port_tty_get(&edge_port->port->port);
1598 if (tty) {
1599 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1600 tty_kref_put(tty);
1601 }
1602 }
1603
1604 /* update input line counters */
1605 icount = &edge_port->icount;
1606 if (new_lsr & LSR_BREAK)
1607 icount->brk++;
1608 if (new_lsr & LSR_OVER_ERR)
1609 icount->overrun++;
1610 if (new_lsr & LSR_PAR_ERR)
1611 icount->parity++;
1612 if (new_lsr & LSR_FRM_ERR)
1613 icount->frame++;
1614}
1615
1616
1617static void edge_interrupt_callback(struct urb *urb)
1618{
1619 struct edgeport_serial *edge_serial = urb->context;
1620 struct usb_serial_port *port;
1621 struct edgeport_port *edge_port;
1622 unsigned char *data = urb->transfer_buffer;
1623 int length = urb->actual_length;
1624 int port_number;
1625 int function;
1626 int retval;
1627 __u8 lsr;
1628 __u8 msr;
1629 int status = urb->status;
1630
1631 dbg("%s", __func__);
1632
1633 switch (status) {
1634 case 0:
1635 /* success */
1636 break;
1637 case -ECONNRESET:
1638 case -ENOENT:
1639 case -ESHUTDOWN:
1640 /* this urb is terminated, clean up */
1641 dbg("%s - urb shutting down with status: %d",
1642 __func__, status);
1643 return;
1644 default:
1645 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1646 "%d\n", __func__, status);
1647 goto exit;
1648 }
1649
1650 if (!length) {
1651 dbg("%s - no data in urb", __func__);
1652 goto exit;
1653 }
1654
1655 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1656 __func__, length, data);
1657
1658 if (length != 2) {
1659 dbg("%s - expecting packet of size 2, got %d",
1660 __func__, length);
1661 goto exit;
1662 }
1663
1664 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1665 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1666 dbg("%s - port_number %d, function %d, info 0x%x",
1667 __func__, port_number, function, data[1]);
1668 port = edge_serial->serial->port[port_number];
1669 edge_port = usb_get_serial_port_data(port);
1670 if (!edge_port) {
1671 dbg("%s - edge_port not found", __func__);
1672 return;
1673 }
1674 switch (function) {
1675 case TIUMP_INTERRUPT_CODE_LSR:
1676 lsr = map_line_status(data[1]);
1677 if (lsr & UMP_UART_LSR_DATA_MASK) {
1678 /* Save the LSR event for bulk read
1679 completion routine */
1680 dbg("%s - LSR Event Port %u LSR Status = %02x",
1681 __func__, port_number, lsr);
1682 edge_port->lsr_event = 1;
1683 edge_port->lsr_mask = lsr;
1684 } else {
1685 dbg("%s - ===== Port %d LSR Status = %02x ======",
1686 __func__, port_number, lsr);
1687 handle_new_lsr(edge_port, 0, lsr, 0);
1688 }
1689 break;
1690
1691 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1692 /* Copy MSR from UMP */
1693 msr = data[1];
1694 dbg("%s - ===== Port %u MSR Status = %02x ======",
1695 __func__, port_number, msr);
1696 handle_new_msr(edge_port, msr);
1697 break;
1698
1699 default:
1700 dev_err(&urb->dev->dev,
1701 "%s - Unknown Interrupt code from UMP %x\n",
1702 __func__, data[1]);
1703 break;
1704
1705 }
1706
1707exit:
1708 retval = usb_submit_urb(urb, GFP_ATOMIC);
1709 if (retval)
1710 dev_err(&urb->dev->dev,
1711 "%s - usb_submit_urb failed with result %d\n",
1712 __func__, retval);
1713}
1714
1715static void edge_bulk_in_callback(struct urb *urb)
1716{
1717 struct edgeport_port *edge_port = urb->context;
1718 unsigned char *data = urb->transfer_buffer;
1719 struct tty_struct *tty;
1720 int retval = 0;
1721 int port_number;
1722 int status = urb->status;
1723
1724 dbg("%s", __func__);
1725
1726 switch (status) {
1727 case 0:
1728 /* success */
1729 break;
1730 case -ECONNRESET:
1731 case -ENOENT:
1732 case -ESHUTDOWN:
1733 /* this urb is terminated, clean up */
1734 dbg("%s - urb shutting down with status: %d",
1735 __func__, status);
1736 return;
1737 default:
1738 dev_err(&urb->dev->dev,
1739 "%s - nonzero read bulk status received: %d\n",
1740 __func__, status);
1741 }
1742
1743 if (status == -EPIPE)
1744 goto exit;
1745
1746 if (status) {
1747 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1748 return;
1749 }
1750
1751 port_number = edge_port->port->number - edge_port->port->serial->minor;
1752
1753 if (edge_port->lsr_event) {
1754 edge_port->lsr_event = 0;
1755 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1756 __func__, port_number, edge_port->lsr_mask, *data);
1757 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1758 /* Adjust buffer length/pointer */
1759 --urb->actual_length;
1760 ++data;
1761 }
1762
1763 tty = tty_port_tty_get(&edge_port->port->port);
1764 if (tty && urb->actual_length) {
1765 usb_serial_debug_data(debug, &edge_port->port->dev,
1766 __func__, urb->actual_length, data);
1767 if (edge_port->close_pending)
1768 dbg("%s - close pending, dropping data on the floor",
1769 __func__);
1770 else
1771 edge_tty_recv(&edge_port->port->dev, tty, data,
1772 urb->actual_length);
1773 edge_port->icount.rx += urb->actual_length;
1774 }
1775 tty_kref_put(tty);
1776
1777exit:
1778 /* continue read unless stopped */
1779 spin_lock(&edge_port->ep_lock);
1780 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1781 urb->dev = edge_port->port->serial->dev;
1782 retval = usb_submit_urb(urb, GFP_ATOMIC);
1783 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1784 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1785 }
1786 spin_unlock(&edge_port->ep_lock);
1787 if (retval)
1788 dev_err(&urb->dev->dev,
1789 "%s - usb_submit_urb failed with result %d\n",
1790 __func__, retval);
1791}
1792
1793static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1794 unsigned char *data, int length)
1795{
1796 int queued;
1797
1798 queued = tty_insert_flip_string(tty, data, length);
1799 if (queued < length)
1800 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1801 __func__, length - queued);
1802 tty_flip_buffer_push(tty);
1803}
1804
1805static void edge_bulk_out_callback(struct urb *urb)
1806{
1807 struct usb_serial_port *port = urb->context;
1808 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1809 int status = urb->status;
1810 struct tty_struct *tty;
1811
1812 dbg("%s - port %d", __func__, port->number);
1813
1814 edge_port->ep_write_urb_in_use = 0;
1815
1816 switch (status) {
1817 case 0:
1818 /* success */
1819 break;
1820 case -ECONNRESET:
1821 case -ENOENT:
1822 case -ESHUTDOWN:
1823 /* this urb is terminated, clean up */
1824 dbg("%s - urb shutting down with status: %d",
1825 __func__, status);
1826 return;
1827 default:
1828 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1829 "received: %d\n", __func__, status);
1830 }
1831
1832 /* send any buffered data */
1833 tty = tty_port_tty_get(&port->port);
1834 edge_send(tty);
1835 tty_kref_put(tty);
1836}
1837
1838static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1839{
1840 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1841 struct edgeport_serial *edge_serial;
1842 struct usb_device *dev;
1843 struct urb *urb;
1844 int port_number;
1845 int status;
1846 u16 open_settings;
1847 u8 transaction_timeout;
1848
1849 dbg("%s - port %d", __func__, port->number);
1850
1851 if (edge_port == NULL)
1852 return -ENODEV;
1853
1854 port_number = port->number - port->serial->minor;
1855 switch (port_number) {
1856 case 0:
1857 edge_port->uart_base = UMPMEM_BASE_UART1;
1858 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1859 break;
1860 case 1:
1861 edge_port->uart_base = UMPMEM_BASE_UART2;
1862 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1863 break;
1864 default:
1865 dev_err(&port->dev, "Unknown port number!!!\n");
1866 return -ENODEV;
1867 }
1868
1869 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1870 __func__, port_number, edge_port->uart_base,
1871 edge_port->dma_address);
1872
1873 dev = port->serial->dev;
1874
1875 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1876 init_waitqueue_head(&edge_port->delta_msr_wait);
1877
1878 /* turn off loopback */
1879 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1880 if (status) {
1881 dev_err(&port->dev,
1882 "%s - cannot send clear loopback command, %d\n",
1883 __func__, status);
1884 return status;
1885 }
1886
1887 /* set up the port settings */
1888 if (tty)
1889 edge_set_termios(tty, port, tty->termios);
1890
1891 /* open up the port */
1892
1893 /* milliseconds to timeout for DMA transfer */
1894 transaction_timeout = 2;
1895
1896 edge_port->ump_read_timeout =
1897 max(20, ((transaction_timeout * 3) / 2));
1898
1899 /* milliseconds to timeout for DMA transfer */
1900 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1901 UMP_PIPE_TRANS_TIMEOUT_ENA |
1902 (transaction_timeout << 2));
1903
1904 dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1905
1906 /* Tell TI to open and start the port */
1907 status = send_cmd(dev, UMPC_OPEN_PORT,
1908 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1909 if (status) {
1910 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1911 __func__, status);
1912 return status;
1913 }
1914
1915 /* Start the DMA? */
1916 status = send_cmd(dev, UMPC_START_PORT,
1917 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1918 if (status) {
1919 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1920 __func__, status);
1921 return status;
1922 }
1923
1924 /* Clear TX and RX buffers in UMP */
1925 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1926 if (status) {
1927 dev_err(&port->dev,
1928 "%s - cannot send clear buffers command, %d\n",
1929 __func__, status);
1930 return status;
1931 }
1932
1933 /* Read Initial MSR */
1934 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1935 (__u16)(UMPM_UART1_PORT + port_number),
1936 &edge_port->shadow_msr, 1);
1937 if (status) {
1938 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1939 __func__, status);
1940 return status;
1941 }
1942
1943 dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1944
1945 /* Set Initial MCR */
1946 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1947 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1948
1949 edge_serial = edge_port->edge_serial;
1950 if (mutex_lock_interruptible(&edge_serial->es_lock))
1951 return -ERESTARTSYS;
1952 if (edge_serial->num_ports_open == 0) {
1953 /* we are the first port to open, post the interrupt urb */
1954 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1955 if (!urb) {
1956 dev_err(&port->dev,
1957 "%s - no interrupt urb present, exiting\n",
1958 __func__);
1959 status = -EINVAL;
1960 goto release_es_lock;
1961 }
1962 urb->complete = edge_interrupt_callback;
1963 urb->context = edge_serial;
1964 urb->dev = dev;
1965 status = usb_submit_urb(urb, GFP_KERNEL);
1966 if (status) {
1967 dev_err(&port->dev,
1968 "%s - usb_submit_urb failed with value %d\n",
1969 __func__, status);
1970 goto release_es_lock;
1971 }
1972 }
1973
1974 /*
1975 * reset the data toggle on the bulk endpoints to work around bug in
1976 * host controllers where things get out of sync some times
1977 */
1978 usb_clear_halt(dev, port->write_urb->pipe);
1979 usb_clear_halt(dev, port->read_urb->pipe);
1980
1981 /* start up our bulk read urb */
1982 urb = port->read_urb;
1983 if (!urb) {
1984 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1985 __func__);
1986 status = -EINVAL;
1987 goto unlink_int_urb;
1988 }
1989 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1990 urb->complete = edge_bulk_in_callback;
1991 urb->context = edge_port;
1992 urb->dev = dev;
1993 status = usb_submit_urb(urb, GFP_KERNEL);
1994 if (status) {
1995 dev_err(&port->dev,
1996 "%s - read bulk usb_submit_urb failed with value %d\n",
1997 __func__, status);
1998 goto unlink_int_urb;
1999 }
2000
2001 ++edge_serial->num_ports_open;
2002
2003 dbg("%s - exited", __func__);
2004
2005 goto release_es_lock;
2006
2007unlink_int_urb:
2008 if (edge_port->edge_serial->num_ports_open == 0)
2009 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2010release_es_lock:
2011 mutex_unlock(&edge_serial->es_lock);
2012 return status;
2013}
2014
2015static void edge_close(struct usb_serial_port *port)
2016{
2017 struct edgeport_serial *edge_serial;
2018 struct edgeport_port *edge_port;
2019 int port_number;
2020 int status;
2021
2022 dbg("%s - port %d", __func__, port->number);
2023
2024 edge_serial = usb_get_serial_data(port->serial);
2025 edge_port = usb_get_serial_port_data(port);
2026 if (edge_serial == NULL || edge_port == NULL)
2027 return;
2028
2029 /* The bulkreadcompletion routine will check
2030 * this flag and dump add read data */
2031 edge_port->close_pending = 1;
2032
2033 /* chase the port close and flush */
2034 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2035
2036 usb_kill_urb(port->read_urb);
2037 usb_kill_urb(port->write_urb);
2038 edge_port->ep_write_urb_in_use = 0;
2039
2040 /* assuming we can still talk to the device,
2041 * send a close port command to it */
2042 dbg("%s - send umpc_close_port", __func__);
2043 port_number = port->number - port->serial->minor;
2044 status = send_cmd(port->serial->dev,
2045 UMPC_CLOSE_PORT,
2046 (__u8)(UMPM_UART1_PORT + port_number),
2047 0,
2048 NULL,
2049 0);
2050 mutex_lock(&edge_serial->es_lock);
2051 --edge_port->edge_serial->num_ports_open;
2052 if (edge_port->edge_serial->num_ports_open <= 0) {
2053 /* last port is now closed, let's shut down our interrupt urb */
2054 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2055 edge_port->edge_serial->num_ports_open = 0;
2056 }
2057 mutex_unlock(&edge_serial->es_lock);
2058 edge_port->close_pending = 0;
2059
2060 dbg("%s - exited", __func__);
2061}
2062
2063static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2064 const unsigned char *data, int count)
2065{
2066 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2067
2068 dbg("%s - port %d", __func__, port->number);
2069
2070 if (count == 0) {
2071 dbg("%s - write request of 0 bytes", __func__);
2072 return 0;
2073 }
2074
2075 if (edge_port == NULL)
2076 return -ENODEV;
2077 if (edge_port->close_pending == 1)
2078 return -ENODEV;
2079
2080 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2081 &edge_port->ep_lock);
2082 edge_send(tty);
2083
2084 return count;
2085}
2086
2087static void edge_send(struct tty_struct *tty)
2088{
2089 struct usb_serial_port *port = tty->driver_data;
2090 int count, result;
2091 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2092 unsigned long flags;
2093
2094
2095 dbg("%s - port %d", __func__, port->number);
2096
2097 spin_lock_irqsave(&edge_port->ep_lock, flags);
2098
2099 if (edge_port->ep_write_urb_in_use) {
2100 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2101 return;
2102 }
2103
2104 count = kfifo_out(&edge_port->write_fifo,
2105 port->write_urb->transfer_buffer,
2106 port->bulk_out_size);
2107
2108 if (count == 0) {
2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2110 return;
2111 }
2112
2113 edge_port->ep_write_urb_in_use = 1;
2114
2115 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2116
2117 usb_serial_debug_data(debug, &port->dev, __func__, count,
2118 port->write_urb->transfer_buffer);
2119
2120 /* set up our urb */
2121 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
2122 usb_sndbulkpipe(port->serial->dev,
2123 port->bulk_out_endpointAddress),
2124 port->write_urb->transfer_buffer, count,
2125 edge_bulk_out_callback,
2126 port);
2127
2128 /* send the data out the bulk port */
2129 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2130 if (result) {
2131 dev_err(&port->dev,
2132 "%s - failed submitting write urb, error %d\n",
2133 __func__, result);
2134 edge_port->ep_write_urb_in_use = 0;
2135 /* TODO: reschedule edge_send */
2136 } else
2137 edge_port->icount.tx += count;
2138
2139 /* wakeup any process waiting for writes to complete */
2140 /* there is now more room in the buffer for new writes */
2141 if (tty)
2142 tty_wakeup(tty);
2143}
2144
2145static int edge_write_room(struct tty_struct *tty)
2146{
2147 struct usb_serial_port *port = tty->driver_data;
2148 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2149 int room = 0;
2150 unsigned long flags;
2151
2152 dbg("%s - port %d", __func__, port->number);
2153
2154 if (edge_port == NULL)
2155 return 0;
2156 if (edge_port->close_pending == 1)
2157 return 0;
2158
2159 spin_lock_irqsave(&edge_port->ep_lock, flags);
2160 room = kfifo_avail(&edge_port->write_fifo);
2161 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2162
2163 dbg("%s - returns %d", __func__, room);
2164 return room;
2165}
2166
2167static int edge_chars_in_buffer(struct tty_struct *tty)
2168{
2169 struct usb_serial_port *port = tty->driver_data;
2170 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2171 int chars = 0;
2172 unsigned long flags;
2173
2174 dbg("%s - port %d", __func__, port->number);
2175
2176 if (edge_port == NULL)
2177 return 0;
2178 if (edge_port->close_pending == 1)
2179 return 0;
2180
2181 spin_lock_irqsave(&edge_port->ep_lock, flags);
2182 chars = kfifo_len(&edge_port->write_fifo);
2183 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2184
2185 dbg("%s - returns %d", __func__, chars);
2186 return chars;
2187}
2188
2189static void edge_throttle(struct tty_struct *tty)
2190{
2191 struct usb_serial_port *port = tty->driver_data;
2192 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2193 int status;
2194
2195 dbg("%s - port %d", __func__, port->number);
2196
2197 if (edge_port == NULL)
2198 return;
2199
2200 /* if we are implementing XON/XOFF, send the stop character */
2201 if (I_IXOFF(tty)) {
2202 unsigned char stop_char = STOP_CHAR(tty);
2203 status = edge_write(tty, port, &stop_char, 1);
2204 if (status <= 0) {
2205 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2206 }
2207 }
2208
2209 /* if we are implementing RTS/CTS, stop reads */
2210 /* and the Edgeport will clear the RTS line */
2211 if (C_CRTSCTS(tty))
2212 stop_read(edge_port);
2213
2214}
2215
2216static void edge_unthrottle(struct tty_struct *tty)
2217{
2218 struct usb_serial_port *port = tty->driver_data;
2219 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2220 int status;
2221
2222 dbg("%s - port %d", __func__, port->number);
2223
2224 if (edge_port == NULL)
2225 return;
2226
2227 /* if we are implementing XON/XOFF, send the start character */
2228 if (I_IXOFF(tty)) {
2229 unsigned char start_char = START_CHAR(tty);
2230 status = edge_write(tty, port, &start_char, 1);
2231 if (status <= 0) {
2232 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2233 }
2234 }
2235 /* if we are implementing RTS/CTS, restart reads */
2236 /* are the Edgeport will assert the RTS line */
2237 if (C_CRTSCTS(tty)) {
2238 status = restart_read(edge_port);
2239 if (status)
2240 dev_err(&port->dev,
2241 "%s - read bulk usb_submit_urb failed: %d\n",
2242 __func__, status);
2243 }
2244
2245}
2246
2247static void stop_read(struct edgeport_port *edge_port)
2248{
2249 unsigned long flags;
2250
2251 spin_lock_irqsave(&edge_port->ep_lock, flags);
2252
2253 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2254 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2255 edge_port->shadow_mcr &= ~MCR_RTS;
2256
2257 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2258}
2259
2260static int restart_read(struct edgeport_port *edge_port)
2261{
2262 struct urb *urb;
2263 int status = 0;
2264 unsigned long flags;
2265
2266 spin_lock_irqsave(&edge_port->ep_lock, flags);
2267
2268 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2269 urb = edge_port->port->read_urb;
2270 urb->complete = edge_bulk_in_callback;
2271 urb->context = edge_port;
2272 urb->dev = edge_port->port->serial->dev;
2273 status = usb_submit_urb(urb, GFP_ATOMIC);
2274 }
2275 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2276 edge_port->shadow_mcr |= MCR_RTS;
2277
2278 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2279
2280 return status;
2281}
2282
2283static void change_port_settings(struct tty_struct *tty,
2284 struct edgeport_port *edge_port, struct ktermios *old_termios)
2285{
2286 struct ump_uart_config *config;
2287 int baud;
2288 unsigned cflag;
2289 int status;
2290 int port_number = edge_port->port->number -
2291 edge_port->port->serial->minor;
2292
2293 dbg("%s - port %d", __func__, edge_port->port->number);
2294
2295 config = kmalloc (sizeof (*config), GFP_KERNEL);
2296 if (!config) {
2297 *tty->termios = *old_termios;
2298 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2299 __func__);
2300 return;
2301 }
2302
2303 cflag = tty->termios->c_cflag;
2304
2305 config->wFlags = 0;
2306
2307 /* These flags must be set */
2308 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2309 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2310 config->bUartMode = (__u8)(edge_port->bUartMode);
2311
2312 switch (cflag & CSIZE) {
2313 case CS5:
2314 config->bDataBits = UMP_UART_CHAR5BITS;
2315 dbg("%s - data bits = 5", __func__);
2316 break;
2317 case CS6:
2318 config->bDataBits = UMP_UART_CHAR6BITS;
2319 dbg("%s - data bits = 6", __func__);
2320 break;
2321 case CS7:
2322 config->bDataBits = UMP_UART_CHAR7BITS;
2323 dbg("%s - data bits = 7", __func__);
2324 break;
2325 default:
2326 case CS8:
2327 config->bDataBits = UMP_UART_CHAR8BITS;
2328 dbg("%s - data bits = 8", __func__);
2329 break;
2330 }
2331
2332 if (cflag & PARENB) {
2333 if (cflag & PARODD) {
2334 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2335 config->bParity = UMP_UART_ODDPARITY;
2336 dbg("%s - parity = odd", __func__);
2337 } else {
2338 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2339 config->bParity = UMP_UART_EVENPARITY;
2340 dbg("%s - parity = even", __func__);
2341 }
2342 } else {
2343 config->bParity = UMP_UART_NOPARITY;
2344 dbg("%s - parity = none", __func__);
2345 }
2346
2347 if (cflag & CSTOPB) {
2348 config->bStopBits = UMP_UART_STOPBIT2;
2349 dbg("%s - stop bits = 2", __func__);
2350 } else {
2351 config->bStopBits = UMP_UART_STOPBIT1;
2352 dbg("%s - stop bits = 1", __func__);
2353 }
2354
2355 /* figure out the flow control settings */
2356 if (cflag & CRTSCTS) {
2357 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2358 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2359 dbg("%s - RTS/CTS is enabled", __func__);
2360 } else {
2361 dbg("%s - RTS/CTS is disabled", __func__);
2362 tty->hw_stopped = 0;
2363 restart_read(edge_port);
2364 }
2365
2366 /* if we are implementing XON/XOFF, set the start and stop
2367 character in the device */
2368 config->cXon = START_CHAR(tty);
2369 config->cXoff = STOP_CHAR(tty);
2370
2371 /* if we are implementing INBOUND XON/XOFF */
2372 if (I_IXOFF(tty)) {
2373 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2374 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2375 __func__, config->cXon, config->cXoff);
2376 } else
2377 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2378
2379 /* if we are implementing OUTBOUND XON/XOFF */
2380 if (I_IXON(tty)) {
2381 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2382 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2383 __func__, config->cXon, config->cXoff);
2384 } else
2385 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2386
2387 tty->termios->c_cflag &= ~CMSPAR;
2388
2389 /* Round the baud rate */
2390 baud = tty_get_baud_rate(tty);
2391 if (!baud) {
2392 /* pick a default, any default... */
2393 baud = 9600;
2394 } else
2395 tty_encode_baud_rate(tty, baud, baud);
2396
2397 edge_port->baud_rate = baud;
2398 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2399
2400 /* FIXME: Recompute actual baud from divisor here */
2401
2402 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2403 config->wBaudRate);
2404
2405 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2406 dbg("wFlags: 0x%x", config->wFlags);
2407 dbg("bDataBits: %d", config->bDataBits);
2408 dbg("bParity: %d", config->bParity);
2409 dbg("bStopBits: %d", config->bStopBits);
2410 dbg("cXon: %d", config->cXon);
2411 dbg("cXoff: %d", config->cXoff);
2412 dbg("bUartMode: %d", config->bUartMode);
2413
2414 /* move the word values into big endian mode */
2415 cpu_to_be16s(&config->wFlags);
2416 cpu_to_be16s(&config->wBaudRate);
2417
2418 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2419 (__u8)(UMPM_UART1_PORT + port_number),
2420 0, (__u8 *)config, sizeof(*config));
2421 if (status)
2422 dbg("%s - error %d when trying to write config to device",
2423 __func__, status);
2424 kfree(config);
2425}
2426
2427static void edge_set_termios(struct tty_struct *tty,
2428 struct usb_serial_port *port, struct ktermios *old_termios)
2429{
2430 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2431 unsigned int cflag;
2432
2433 cflag = tty->termios->c_cflag;
2434
2435 dbg("%s - clfag %08x iflag %08x", __func__,
2436 tty->termios->c_cflag, tty->termios->c_iflag);
2437 dbg("%s - old clfag %08x old iflag %08x", __func__,
2438 old_termios->c_cflag, old_termios->c_iflag);
2439 dbg("%s - port %d", __func__, port->number);
2440
2441 if (edge_port == NULL)
2442 return;
2443 /* change the port settings to the new ones specified */
2444 change_port_settings(tty, edge_port, old_termios);
2445}
2446
2447static int edge_tiocmset(struct tty_struct *tty,
2448 unsigned int set, unsigned int clear)
2449{
2450 struct usb_serial_port *port = tty->driver_data;
2451 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2452 unsigned int mcr;
2453 unsigned long flags;
2454
2455 dbg("%s - port %d", __func__, port->number);
2456
2457 spin_lock_irqsave(&edge_port->ep_lock, flags);
2458 mcr = edge_port->shadow_mcr;
2459 if (set & TIOCM_RTS)
2460 mcr |= MCR_RTS;
2461 if (set & TIOCM_DTR)
2462 mcr |= MCR_DTR;
2463 if (set & TIOCM_LOOP)
2464 mcr |= MCR_LOOPBACK;
2465
2466 if (clear & TIOCM_RTS)
2467 mcr &= ~MCR_RTS;
2468 if (clear & TIOCM_DTR)
2469 mcr &= ~MCR_DTR;
2470 if (clear & TIOCM_LOOP)
2471 mcr &= ~MCR_LOOPBACK;
2472
2473 edge_port->shadow_mcr = mcr;
2474 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2475
2476 restore_mcr(edge_port, mcr);
2477 return 0;
2478}
2479
2480static int edge_tiocmget(struct tty_struct *tty)
2481{
2482 struct usb_serial_port *port = tty->driver_data;
2483 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2484 unsigned int result = 0;
2485 unsigned int msr;
2486 unsigned int mcr;
2487 unsigned long flags;
2488
2489 dbg("%s - port %d", __func__, port->number);
2490
2491 spin_lock_irqsave(&edge_port->ep_lock, flags);
2492
2493 msr = edge_port->shadow_msr;
2494 mcr = edge_port->shadow_mcr;
2495 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2496 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2497 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2498 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2499 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2500 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2501
2502
2503 dbg("%s -- %x", __func__, result);
2504 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2505
2506 return result;
2507}
2508
2509static int edge_get_icount(struct tty_struct *tty,
2510 struct serial_icounter_struct *icount)
2511{
2512 struct usb_serial_port *port = tty->driver_data;
2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2514 struct async_icount *ic = &edge_port->icount;
2515
2516 icount->cts = ic->cts;
2517 icount->dsr = ic->dsr;
2518 icount->rng = ic->rng;
2519 icount->dcd = ic->dcd;
2520 icount->tx = ic->tx;
2521 icount->rx = ic->rx;
2522 icount->frame = ic->frame;
2523 icount->parity = ic->parity;
2524 icount->overrun = ic->overrun;
2525 icount->brk = ic->brk;
2526 icount->buf_overrun = ic->buf_overrun;
2527 return 0;
2528}
2529
2530static int get_serial_info(struct edgeport_port *edge_port,
2531 struct serial_struct __user *retinfo)
2532{
2533 struct serial_struct tmp;
2534
2535 if (!retinfo)
2536 return -EFAULT;
2537
2538 memset(&tmp, 0, sizeof(tmp));
2539
2540 tmp.type = PORT_16550A;
2541 tmp.line = edge_port->port->serial->minor;
2542 tmp.port = edge_port->port->number;
2543 tmp.irq = 0;
2544 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2545 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2546 tmp.baud_base = 9600;
2547 tmp.close_delay = 5*HZ;
2548 tmp.closing_wait = closing_wait;
2549
2550 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2551 return -EFAULT;
2552 return 0;
2553}
2554
2555static int edge_ioctl(struct tty_struct *tty,
2556 unsigned int cmd, unsigned long arg)
2557{
2558 struct usb_serial_port *port = tty->driver_data;
2559 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2560 struct async_icount cnow;
2561 struct async_icount cprev;
2562
2563 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2564
2565 switch (cmd) {
2566 case TIOCGSERIAL:
2567 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2568 return get_serial_info(edge_port,
2569 (struct serial_struct __user *) arg);
2570 case TIOCMIWAIT:
2571 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2572 cprev = edge_port->icount;
2573 while (1) {
2574 interruptible_sleep_on(&edge_port->delta_msr_wait);
2575 /* see if a signal did it */
2576 if (signal_pending(current))
2577 return -ERESTARTSYS;
2578 cnow = edge_port->icount;
2579 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2580 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2581 return -EIO; /* no change => error */
2582 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2583 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2584 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2585 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2586 return 0;
2587 }
2588 cprev = cnow;
2589 }
2590 /* not reached */
2591 break;
2592 }
2593 return -ENOIOCTLCMD;
2594}
2595
2596static void edge_break(struct tty_struct *tty, int break_state)
2597{
2598 struct usb_serial_port *port = tty->driver_data;
2599 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2600 int status;
2601 int bv = 0; /* Off */
2602
2603 dbg("%s - state = %d", __func__, break_state);
2604
2605 /* chase the port close */
2606 chase_port(edge_port, 0, 0);
2607
2608 if (break_state == -1)
2609 bv = 1; /* On */
2610 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2611 if (status)
2612 dbg("%s - error %d sending break set/clear command.",
2613 __func__, status);
2614}
2615
2616static int edge_startup(struct usb_serial *serial)
2617{
2618 struct edgeport_serial *edge_serial;
2619 struct edgeport_port *edge_port;
2620 struct usb_device *dev;
2621 int status;
2622 int i;
2623
2624 dev = serial->dev;
2625
2626 /* create our private serial structure */
2627 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2628 if (edge_serial == NULL) {
2629 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2630 return -ENOMEM;
2631 }
2632 mutex_init(&edge_serial->es_lock);
2633 edge_serial->serial = serial;
2634 usb_set_serial_data(serial, edge_serial);
2635
2636 status = download_fw(edge_serial);
2637 if (status) {
2638 kfree(edge_serial);
2639 return status;
2640 }
2641
2642 /* set up our port private structures */
2643 for (i = 0; i < serial->num_ports; ++i) {
2644 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2645 if (edge_port == NULL) {
2646 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2647 __func__);
2648 goto cleanup;
2649 }
2650 spin_lock_init(&edge_port->ep_lock);
2651 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2652 GFP_KERNEL)) {
2653 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2654 __func__);
2655 kfree(edge_port);
2656 goto cleanup;
2657 }
2658 edge_port->port = serial->port[i];
2659 edge_port->edge_serial = edge_serial;
2660 usb_set_serial_port_data(serial->port[i], edge_port);
2661 edge_port->bUartMode = default_uart_mode;
2662 }
2663
2664 return 0;
2665
2666cleanup:
2667 for (--i; i >= 0; --i) {
2668 edge_port = usb_get_serial_port_data(serial->port[i]);
2669 kfifo_free(&edge_port->write_fifo);
2670 kfree(edge_port);
2671 usb_set_serial_port_data(serial->port[i], NULL);
2672 }
2673 kfree(edge_serial);
2674 usb_set_serial_data(serial, NULL);
2675 return -ENOMEM;
2676}
2677
2678static void edge_disconnect(struct usb_serial *serial)
2679{
2680 int i;
2681 struct edgeport_port *edge_port;
2682
2683 dbg("%s", __func__);
2684
2685 for (i = 0; i < serial->num_ports; ++i) {
2686 edge_port = usb_get_serial_port_data(serial->port[i]);
2687 edge_remove_sysfs_attrs(edge_port->port);
2688 }
2689}
2690
2691static void edge_release(struct usb_serial *serial)
2692{
2693 int i;
2694 struct edgeport_port *edge_port;
2695
2696 dbg("%s", __func__);
2697
2698 for (i = 0; i < serial->num_ports; ++i) {
2699 edge_port = usb_get_serial_port_data(serial->port[i]);
2700 kfifo_free(&edge_port->write_fifo);
2701 kfree(edge_port);
2702 }
2703 kfree(usb_get_serial_data(serial));
2704}
2705
2706
2707/* Sysfs Attributes */
2708
2709static ssize_t show_uart_mode(struct device *dev,
2710 struct device_attribute *attr, char *buf)
2711{
2712 struct usb_serial_port *port = to_usb_serial_port(dev);
2713 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2714
2715 return sprintf(buf, "%d\n", edge_port->bUartMode);
2716}
2717
2718static ssize_t store_uart_mode(struct device *dev,
2719 struct device_attribute *attr, const char *valbuf, size_t count)
2720{
2721 struct usb_serial_port *port = to_usb_serial_port(dev);
2722 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2723 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2724
2725 dbg("%s: setting uart_mode = %d", __func__, v);
2726
2727 if (v < 256)
2728 edge_port->bUartMode = v;
2729 else
2730 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2731
2732 return count;
2733}
2734
2735static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2736 store_uart_mode);
2737
2738static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2739{
2740 return device_create_file(&port->dev, &dev_attr_uart_mode);
2741}
2742
2743static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2744{
2745 device_remove_file(&port->dev, &dev_attr_uart_mode);
2746 return 0;
2747}
2748
2749
2750static struct usb_serial_driver edgeport_1port_device = {
2751 .driver = {
2752 .owner = THIS_MODULE,
2753 .name = "edgeport_ti_1",
2754 },
2755 .description = "Edgeport TI 1 port adapter",
2756 .usb_driver = &io_driver,
2757 .id_table = edgeport_1port_id_table,
2758 .num_ports = 1,
2759 .open = edge_open,
2760 .close = edge_close,
2761 .throttle = edge_throttle,
2762 .unthrottle = edge_unthrottle,
2763 .attach = edge_startup,
2764 .disconnect = edge_disconnect,
2765 .release = edge_release,
2766 .port_probe = edge_create_sysfs_attrs,
2767 .ioctl = edge_ioctl,
2768 .set_termios = edge_set_termios,
2769 .tiocmget = edge_tiocmget,
2770 .tiocmset = edge_tiocmset,
2771 .get_icount = edge_get_icount,
2772 .write = edge_write,
2773 .write_room = edge_write_room,
2774 .chars_in_buffer = edge_chars_in_buffer,
2775 .break_ctl = edge_break,
2776 .read_int_callback = edge_interrupt_callback,
2777 .read_bulk_callback = edge_bulk_in_callback,
2778 .write_bulk_callback = edge_bulk_out_callback,
2779};
2780
2781static struct usb_serial_driver edgeport_2port_device = {
2782 .driver = {
2783 .owner = THIS_MODULE,
2784 .name = "edgeport_ti_2",
2785 },
2786 .description = "Edgeport TI 2 port adapter",
2787 .usb_driver = &io_driver,
2788 .id_table = edgeport_2port_id_table,
2789 .num_ports = 2,
2790 .open = edge_open,
2791 .close = edge_close,
2792 .throttle = edge_throttle,
2793 .unthrottle = edge_unthrottle,
2794 .attach = edge_startup,
2795 .disconnect = edge_disconnect,
2796 .release = edge_release,
2797 .port_probe = edge_create_sysfs_attrs,
2798 .ioctl = edge_ioctl,
2799 .set_termios = edge_set_termios,
2800 .tiocmget = edge_tiocmget,
2801 .tiocmset = edge_tiocmset,
2802 .write = edge_write,
2803 .write_room = edge_write_room,
2804 .chars_in_buffer = edge_chars_in_buffer,
2805 .break_ctl = edge_break,
2806 .read_int_callback = edge_interrupt_callback,
2807 .read_bulk_callback = edge_bulk_in_callback,
2808 .write_bulk_callback = edge_bulk_out_callback,
2809};
2810
2811
2812static int __init edgeport_init(void)
2813{
2814 int retval;
2815 retval = usb_serial_register(&edgeport_1port_device);
2816 if (retval)
2817 goto failed_1port_device_register;
2818 retval = usb_serial_register(&edgeport_2port_device);
2819 if (retval)
2820 goto failed_2port_device_register;
2821 retval = usb_register(&io_driver);
2822 if (retval)
2823 goto failed_usb_register;
2824 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2825 DRIVER_DESC "\n");
2826 return 0;
2827failed_usb_register:
2828 usb_serial_deregister(&edgeport_2port_device);
2829failed_2port_device_register:
2830 usb_serial_deregister(&edgeport_1port_device);
2831failed_1port_device_register:
2832 return retval;
2833}
2834
2835static void __exit edgeport_exit(void)
2836{
2837 usb_deregister(&io_driver);
2838 usb_serial_deregister(&edgeport_1port_device);
2839 usb_serial_deregister(&edgeport_2port_device);
2840}
2841
2842module_init(edgeport_init);
2843module_exit(edgeport_exit);
2844
2845/* Module information */
2846MODULE_AUTHOR(DRIVER_AUTHOR);
2847MODULE_DESCRIPTION(DRIVER_DESC);
2848MODULE_LICENSE("GPL");
2849MODULE_FIRMWARE("edgeport/down3.bin");
2850
2851module_param(debug, bool, S_IRUGO | S_IWUSR);
2852MODULE_PARM_DESC(debug, "Debug enabled or not");
2853
2854module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2855MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2856
2857module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2858MODULE_PARM_DESC(ignore_cpu_rev,
2859 "Ignore the cpu revision when connecting to a device");
2860
2861module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2862MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
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/slab.h>
24#include <linux/tty.h>
25#include <linux/tty_driver.h>
26#include <linux/tty_flip.h>
27#include <linux/module.h>
28#include <linux/spinlock.h>
29#include <linux/mutex.h>
30#include <linux/serial.h>
31#include <linux/swab.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 /*
58 * Currently in boot mode but
59 * transitioning to download mode
60 */
61
62/* read urb state */
63#define EDGE_READ_URB_RUNNING 0
64#define EDGE_READ_URB_STOPPING 1
65#define EDGE_READ_URB_STOPPED 2
66
67#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
68
69
70/* Product information read from the Edgeport */
71struct product_info {
72 int TiMode; /* Current TI Mode */
73 __u8 hardware_type; /* Type of hardware */
74} __attribute__((packed));
75
76/*
77 * Edgeport firmware header
78 *
79 * "build_number" has been set to 0 in all three of the images I have
80 * seen, and Digi Tech Support suggests that it is safe to ignore it.
81 *
82 * "length" is the number of bytes of actual data following the header.
83 *
84 * "checksum" is the low order byte resulting from adding the values of
85 * all the data bytes.
86 */
87struct edgeport_fw_hdr {
88 u8 major_version;
89 u8 minor_version;
90 __le16 build_number;
91 __le16 length;
92 u8 checksum;
93} __packed;
94
95struct edgeport_port {
96 __u16 uart_base;
97 __u16 dma_address;
98 __u8 shadow_msr;
99 __u8 shadow_mcr;
100 __u8 shadow_lsr;
101 __u8 lsr_mask;
102 __u32 ump_read_timeout; /*
103 * Number of milliseconds the UMP will
104 * wait without data before completing
105 * a read short
106 */
107 int baud_rate;
108 int close_pending;
109 int lsr_event;
110
111 struct edgeport_serial *edge_serial;
112 struct usb_serial_port *port;
113 __u8 bUartMode; /* Port type, 0: RS232, etc. */
114 spinlock_t ep_lock;
115 int ep_read_urb_state;
116 int ep_write_urb_in_use;
117};
118
119struct edgeport_serial {
120 struct product_info product_info;
121 u8 TI_I2C_Type; /* Type of I2C in UMP */
122 u8 TiReadI2C; /*
123 * Set to TRUE if we have read the
124 * I2c in Boot Mode
125 */
126 struct mutex es_lock;
127 int num_ports_open;
128 struct usb_serial *serial;
129 struct delayed_work heartbeat_work;
130 int fw_version;
131 bool use_heartbeat;
132};
133
134
135/* Devices that this driver supports */
136static const struct usb_device_id edgeport_1port_id_table[] = {
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
153 { }
154};
155
156static const struct usb_device_id edgeport_2port_id_table[] = {
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
169 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
175 { }
176};
177
178/* Devices that this driver supports */
179static const struct usb_device_id id_table_combined[] = {
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
209 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
210 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
211 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
212 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
213 { }
214};
215
216MODULE_DEVICE_TABLE(usb, id_table_combined);
217
218static int closing_wait = EDGE_CLOSING_WAIT;
219static bool ignore_cpu_rev;
220static int default_uart_mode; /* RS232 */
221
222static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
223 int length);
224
225static void stop_read(struct edgeport_port *edge_port);
226static int restart_read(struct edgeport_port *edge_port);
227
228static void edge_set_termios(struct tty_struct *tty,
229 struct usb_serial_port *port, struct ktermios *old_termios);
230static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
231
232static int do_download_mode(struct edgeport_serial *serial,
233 const struct firmware *fw);
234static int do_boot_mode(struct edgeport_serial *serial,
235 const struct firmware *fw);
236
237/* sysfs attributes */
238static int edge_create_sysfs_attrs(struct usb_serial_port *port);
239static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
240
241/*
242 * Some release of Edgeport firmware "down3.bin" after version 4.80
243 * introduced code to automatically disconnect idle devices on some
244 * Edgeport models after periods of inactivity, typically ~60 seconds.
245 * This occurs without regard to whether ports on the device are open
246 * or not. Digi International Tech Support suggested:
247 *
248 * 1. Adding driver "heartbeat" code to reset the firmware timer by
249 * requesting a descriptor record every 15 seconds, which should be
250 * effective with newer firmware versions that require it, and benign
251 * with older versions that do not. In practice 40 seconds seems often
252 * enough.
253 * 2. The heartbeat code is currently required only on Edgeport/416 models.
254 */
255#define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80)
256#define FW_HEARTBEAT_SECS 40
257
258/* Timeouts in msecs: firmware downloads take longer */
259#define TI_VSEND_TIMEOUT_DEFAULT 1000
260#define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000
261
262static int ti_vread_sync(struct usb_device *dev, __u8 request,
263 __u16 value, __u16 index, u8 *data, int size)
264{
265 int status;
266
267 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
268 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
269 value, index, data, size, 1000);
270 if (status < 0)
271 return status;
272 if (status != size) {
273 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
274 __func__, size, status);
275 return -ECOMM;
276 }
277 return 0;
278}
279
280static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value,
281 u16 index, u8 *data, int size, int timeout)
282{
283 int status;
284
285 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
286 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
287 value, index, data, size, timeout);
288 if (status < 0)
289 return status;
290 if (status != size) {
291 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
292 __func__, size, status);
293 return -ECOMM;
294 }
295 return 0;
296}
297
298static int send_cmd(struct usb_device *dev, __u8 command,
299 __u8 moduleid, __u16 value, u8 *data,
300 int size)
301{
302 return ti_vsend_sync(dev, command, value, moduleid, data, size,
303 TI_VSEND_TIMEOUT_DEFAULT);
304}
305
306/* clear tx/rx buffers and fifo in TI UMP */
307static int purge_port(struct usb_serial_port *port, __u16 mask)
308{
309 int port_number = port->port_number;
310
311 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
312
313 return send_cmd(port->serial->dev,
314 UMPC_PURGE_PORT,
315 (__u8)(UMPM_UART1_PORT + port_number),
316 mask,
317 NULL,
318 0);
319}
320
321/**
322 * read_download_mem - Read edgeport memory from TI chip
323 * @dev: usb device pointer
324 * @start_address: Device CPU address at which to read
325 * @length: Length of above data
326 * @address_type: Can read both XDATA and I2C
327 * @buffer: pointer to input data buffer
328 */
329static int read_download_mem(struct usb_device *dev, int start_address,
330 int length, __u8 address_type, __u8 *buffer)
331{
332 int status = 0;
333 __u8 read_length;
334 u16 be_start_address;
335
336 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
337
338 /*
339 * Read in blocks of 64 bytes
340 * (TI firmware can't handle more than 64 byte reads)
341 */
342 while (length) {
343 if (length > 64)
344 read_length = 64;
345 else
346 read_length = (__u8)length;
347
348 if (read_length > 1) {
349 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
350 }
351 /*
352 * NOTE: Must use swab as wIndex is sent in little-endian
353 * byte order regardless of host byte order.
354 */
355 be_start_address = swab16((u16)start_address);
356 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
357 (__u16)address_type,
358 be_start_address,
359 buffer, read_length);
360
361 if (status) {
362 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
363 return status;
364 }
365
366 if (read_length > 1)
367 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
368
369 /* Update pointers/length */
370 start_address += read_length;
371 buffer += read_length;
372 length -= read_length;
373 }
374
375 return status;
376}
377
378static int read_ram(struct usb_device *dev, int start_address,
379 int length, __u8 *buffer)
380{
381 return read_download_mem(dev, start_address, length,
382 DTK_ADDR_SPACE_XDATA, buffer);
383}
384
385/* Read edgeport memory to a given block */
386static int read_boot_mem(struct edgeport_serial *serial,
387 int start_address, int length, __u8 *buffer)
388{
389 int status = 0;
390 int i;
391
392 for (i = 0; i < length; i++) {
393 status = ti_vread_sync(serial->serial->dev,
394 UMPC_MEMORY_READ, serial->TI_I2C_Type,
395 (__u16)(start_address+i), &buffer[i], 0x01);
396 if (status) {
397 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
398 return status;
399 }
400 }
401
402 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
403 __func__, start_address, length);
404 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
405
406 serial->TiReadI2C = 1;
407
408 return status;
409}
410
411/* Write given block to TI EPROM memory */
412static int write_boot_mem(struct edgeport_serial *serial,
413 int start_address, int length, __u8 *buffer)
414{
415 int status = 0;
416 int i;
417 u8 *temp;
418
419 /* Must do a read before write */
420 if (!serial->TiReadI2C) {
421 temp = kmalloc(1, GFP_KERNEL);
422 if (!temp)
423 return -ENOMEM;
424
425 status = read_boot_mem(serial, 0, 1, temp);
426 kfree(temp);
427 if (status)
428 return status;
429 }
430
431 for (i = 0; i < length; ++i) {
432 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
433 buffer[i], (u16)(i + start_address), NULL,
434 0, TI_VSEND_TIMEOUT_DEFAULT);
435 if (status)
436 return status;
437 }
438
439 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
440 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
441
442 return status;
443}
444
445/* Write edgeport I2C memory to TI chip */
446static int write_i2c_mem(struct edgeport_serial *serial,
447 int start_address, int length, __u8 address_type, __u8 *buffer)
448{
449 struct device *dev = &serial->serial->dev->dev;
450 int status = 0;
451 int write_length;
452 u16 be_start_address;
453
454 /* We can only send a maximum of 1 aligned byte page at a time */
455
456 /* calculate the number of bytes left in the first page */
457 write_length = EPROM_PAGE_SIZE -
458 (start_address & (EPROM_PAGE_SIZE - 1));
459
460 if (write_length > length)
461 write_length = length;
462
463 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
464 __func__, start_address, write_length);
465 usb_serial_debug_data(dev, __func__, write_length, buffer);
466
467 /*
468 * Write first page.
469 *
470 * NOTE: Must use swab as wIndex is sent in little-endian byte order
471 * regardless of host byte order.
472 */
473 be_start_address = swab16((u16)start_address);
474 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
475 (u16)address_type, be_start_address,
476 buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT);
477 if (status) {
478 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
479 return status;
480 }
481
482 length -= write_length;
483 start_address += write_length;
484 buffer += write_length;
485
486 /*
487 * We should be aligned now -- can write max page size bytes at a
488 * time.
489 */
490 while (length) {
491 if (length > EPROM_PAGE_SIZE)
492 write_length = EPROM_PAGE_SIZE;
493 else
494 write_length = length;
495
496 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
497 __func__, start_address, write_length);
498 usb_serial_debug_data(dev, __func__, write_length, buffer);
499
500 /*
501 * Write next page.
502 *
503 * NOTE: Must use swab as wIndex is sent in little-endian byte
504 * order regardless of host byte order.
505 */
506 be_start_address = swab16((u16)start_address);
507 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
508 (u16)address_type, be_start_address, buffer,
509 write_length, TI_VSEND_TIMEOUT_DEFAULT);
510 if (status) {
511 dev_err(dev, "%s - ERROR %d\n", __func__, status);
512 return status;
513 }
514
515 length -= write_length;
516 start_address += write_length;
517 buffer += write_length;
518 }
519 return status;
520}
521
522/*
523 * Examine the UMP DMA registers and LSR
524 *
525 * Check the MSBit of the X and Y DMA byte count registers.
526 * A zero in this bit indicates that the TX DMA buffers are empty
527 * then check the TX Empty bit in the UART.
528 */
529static int tx_active(struct edgeport_port *port)
530{
531 int status;
532 struct out_endpoint_desc_block *oedb;
533 __u8 *lsr;
534 int bytes_left = 0;
535
536 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
537 if (!oedb)
538 return -ENOMEM;
539
540 /*
541 * Sigh, that's right, just one byte, as not all platforms can
542 * do DMA from stack
543 */
544 lsr = kmalloc(1, GFP_KERNEL);
545 if (!lsr) {
546 kfree(oedb);
547 return -ENOMEM;
548 }
549 /* Read the DMA Count Registers */
550 status = read_ram(port->port->serial->dev, port->dma_address,
551 sizeof(*oedb), (void *)oedb);
552 if (status)
553 goto exit_is_tx_active;
554
555 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
556
557 /* and the LSR */
558 status = read_ram(port->port->serial->dev,
559 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
560
561 if (status)
562 goto exit_is_tx_active;
563 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
564
565 /* If either buffer has data or we are transmitting then return TRUE */
566 if ((oedb->XByteCount & 0x80) != 0)
567 bytes_left += 64;
568
569 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
570 bytes_left += 1;
571
572 /* We return Not Active if we get any kind of error */
573exit_is_tx_active:
574 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
575
576 kfree(lsr);
577 kfree(oedb);
578 return bytes_left;
579}
580
581static int choose_config(struct usb_device *dev)
582{
583 /*
584 * There may be multiple configurations on this device, in which case
585 * we would need to read and parse all of them to find out which one
586 * we want. However, we just support one config at this point,
587 * configuration # 1, which is Config Descriptor 0.
588 */
589
590 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
591 __func__, dev->config->desc.bNumInterfaces);
592 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
593 __func__, dev->config->desc.bMaxPower * 2);
594
595 if (dev->config->desc.bNumInterfaces != 1) {
596 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
597 return -ENODEV;
598 }
599
600 return 0;
601}
602
603static int read_rom(struct edgeport_serial *serial,
604 int start_address, int length, __u8 *buffer)
605{
606 int status;
607
608 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
609 status = read_download_mem(serial->serial->dev,
610 start_address,
611 length,
612 serial->TI_I2C_Type,
613 buffer);
614 } else {
615 status = read_boot_mem(serial, start_address, length,
616 buffer);
617 }
618 return status;
619}
620
621static int write_rom(struct edgeport_serial *serial, int start_address,
622 int length, __u8 *buffer)
623{
624 if (serial->product_info.TiMode == TI_MODE_BOOT)
625 return write_boot_mem(serial, start_address, length,
626 buffer);
627
628 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
629 return write_i2c_mem(serial, start_address, length,
630 serial->TI_I2C_Type, buffer);
631 return -EINVAL;
632}
633
634/* Read a descriptor header from I2C based on type */
635static int get_descriptor_addr(struct edgeport_serial *serial,
636 int desc_type, struct ti_i2c_desc *rom_desc)
637{
638 int start_address;
639 int status;
640
641 /* Search for requested descriptor in I2C */
642 start_address = 2;
643 do {
644 status = read_rom(serial,
645 start_address,
646 sizeof(struct ti_i2c_desc),
647 (__u8 *)rom_desc);
648 if (status)
649 return 0;
650
651 if (rom_desc->Type == desc_type)
652 return start_address;
653
654 start_address = start_address + sizeof(struct ti_i2c_desc) +
655 le16_to_cpu(rom_desc->Size);
656
657 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
658
659 return 0;
660}
661
662/* Validate descriptor checksum */
663static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
664{
665 __u16 i;
666 __u8 cs = 0;
667
668 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
669 cs = (__u8)(cs + buffer[i]);
670
671 if (cs != rom_desc->CheckSum) {
672 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
673 return -EINVAL;
674 }
675 return 0;
676}
677
678/* Make sure that the I2C image is good */
679static int check_i2c_image(struct edgeport_serial *serial)
680{
681 struct device *dev = &serial->serial->dev->dev;
682 int status = 0;
683 struct ti_i2c_desc *rom_desc;
684 int start_address = 2;
685 __u8 *buffer;
686 __u16 ttype;
687
688 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
689 if (!rom_desc)
690 return -ENOMEM;
691
692 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
693 if (!buffer) {
694 kfree(rom_desc);
695 return -ENOMEM;
696 }
697
698 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
699 status = read_rom(serial, 0, 1, buffer);
700 if (status)
701 goto out;
702
703 if (*buffer != UMP5152 && *buffer != UMP3410) {
704 dev_err(dev, "%s - invalid buffer signature\n", __func__);
705 status = -ENODEV;
706 goto out;
707 }
708
709 do {
710 /* Validate the I2C */
711 status = read_rom(serial,
712 start_address,
713 sizeof(struct ti_i2c_desc),
714 (__u8 *)rom_desc);
715 if (status)
716 break;
717
718 if ((start_address + sizeof(struct ti_i2c_desc) +
719 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
720 status = -ENODEV;
721 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
722 break;
723 }
724
725 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
726
727 /* Skip type 2 record */
728 ttype = rom_desc->Type & 0x0f;
729 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
730 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
731 /* Read the descriptor data */
732 status = read_rom(serial, start_address +
733 sizeof(struct ti_i2c_desc),
734 le16_to_cpu(rom_desc->Size),
735 buffer);
736 if (status)
737 break;
738
739 status = valid_csum(rom_desc, buffer);
740 if (status)
741 break;
742 }
743 start_address = start_address + sizeof(struct ti_i2c_desc) +
744 le16_to_cpu(rom_desc->Size);
745
746 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
747 (start_address < TI_MAX_I2C_SIZE));
748
749 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
750 (start_address > TI_MAX_I2C_SIZE))
751 status = -ENODEV;
752
753out:
754 kfree(buffer);
755 kfree(rom_desc);
756 return status;
757}
758
759static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
760{
761 int status;
762 int start_address;
763 struct ti_i2c_desc *rom_desc;
764 struct edge_ti_manuf_descriptor *desc;
765 struct device *dev = &serial->serial->dev->dev;
766
767 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
768 if (!rom_desc)
769 return -ENOMEM;
770
771 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
772 rom_desc);
773
774 if (!start_address) {
775 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
776 status = -ENODEV;
777 goto exit;
778 }
779
780 /* Read the descriptor data */
781 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
782 le16_to_cpu(rom_desc->Size), buffer);
783 if (status)
784 goto exit;
785
786 status = valid_csum(rom_desc, buffer);
787
788 desc = (struct edge_ti_manuf_descriptor *)buffer;
789 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
790 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
791 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
792 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
793 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
794 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
795
796exit:
797 kfree(rom_desc);
798 return status;
799}
800
801/* Build firmware header used for firmware update */
802static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw)
803{
804 __u8 *buffer;
805 int buffer_size;
806 int i;
807 __u8 cs = 0;
808 struct ti_i2c_desc *i2c_header;
809 struct ti_i2c_image_header *img_header;
810 struct ti_i2c_firmware_rec *firmware_rec;
811 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
812
813 /*
814 * In order to update the I2C firmware we must change the type 2 record
815 * to type 0xF2. This will force the UMP to come up in Boot Mode.
816 * Then while in boot mode, the driver will download the latest
817 * firmware (padded to 15.5k) into the UMP ram. And finally when the
818 * device comes back up in download mode the driver will cause the new
819 * firmware to be copied from the UMP Ram to I2C and the firmware will
820 * update the record type from 0xf2 to 0x02.
821 */
822
823 /*
824 * Allocate a 15.5k buffer + 2 bytes for version number (Firmware
825 * Record)
826 */
827 buffer_size = (((1024 * 16) - 512 ) +
828 sizeof(struct ti_i2c_firmware_rec));
829
830 buffer = kmalloc(buffer_size, GFP_KERNEL);
831 if (!buffer)
832 return -ENOMEM;
833
834 /* Set entire image of 0xffs */
835 memset(buffer, 0xff, buffer_size);
836
837 /* Copy version number into firmware record */
838 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
839
840 firmware_rec->Ver_Major = fw_hdr->major_version;
841 firmware_rec->Ver_Minor = fw_hdr->minor_version;
842
843 /* Pointer to fw_down memory image */
844 img_header = (struct ti_i2c_image_header *)&fw->data[4];
845
846 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
847 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
848 le16_to_cpu(img_header->Length));
849
850 for (i=0; i < buffer_size; i++) {
851 cs = (__u8)(cs + buffer[i]);
852 }
853
854 kfree(buffer);
855
856 /* Build new header */
857 i2c_header = (struct ti_i2c_desc *)header;
858 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
859
860 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
861 i2c_header->Size = cpu_to_le16(buffer_size);
862 i2c_header->CheckSum = cs;
863 firmware_rec->Ver_Major = fw_hdr->major_version;
864 firmware_rec->Ver_Minor = fw_hdr->minor_version;
865
866 return 0;
867}
868
869/* Try to figure out what type of I2c we have */
870static int i2c_type_bootmode(struct edgeport_serial *serial)
871{
872 struct device *dev = &serial->serial->dev->dev;
873 int status;
874 u8 *data;
875
876 data = kmalloc(1, GFP_KERNEL);
877 if (!data)
878 return -ENOMEM;
879
880 /* Try to read type 2 */
881 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
882 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
883 if (status)
884 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
885 else
886 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
887 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
888 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
889 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
890 goto out;
891 }
892
893 /* Try to read type 3 */
894 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
895 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
896 if (status)
897 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
898 else
899 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
900 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
901 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
902 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
903 goto out;
904 }
905
906 dev_dbg(dev, "%s - Unknown\n", __func__);
907 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
908 status = -ENODEV;
909out:
910 kfree(data);
911 return status;
912}
913
914static int bulk_xfer(struct usb_serial *serial, void *buffer,
915 int length, int *num_sent)
916{
917 int status;
918
919 status = usb_bulk_msg(serial->dev,
920 usb_sndbulkpipe(serial->dev,
921 serial->port[0]->bulk_out_endpointAddress),
922 buffer, length, num_sent, 1000);
923 return status;
924}
925
926/* Download given firmware image to the device (IN BOOT MODE) */
927static int download_code(struct edgeport_serial *serial, __u8 *image,
928 int image_length)
929{
930 int status = 0;
931 int pos;
932 int transfer;
933 int done;
934
935 /* Transfer firmware image */
936 for (pos = 0; pos < image_length; ) {
937 /* Read the next buffer from file */
938 transfer = image_length - pos;
939 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
940 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
941
942 /* Transfer data */
943 status = bulk_xfer(serial->serial, &image[pos],
944 transfer, &done);
945 if (status)
946 break;
947 /* Advance buffer pointer */
948 pos += done;
949 }
950
951 return status;
952}
953
954/* FIXME!!! */
955static int config_boot_dev(struct usb_device *dev)
956{
957 return 0;
958}
959
960static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
961{
962 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
963}
964
965static int check_fw_sanity(struct edgeport_serial *serial,
966 const struct firmware *fw)
967{
968 u16 length_total;
969 u8 checksum = 0;
970 int pos;
971 struct device *dev = &serial->serial->interface->dev;
972 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
973
974 if (fw->size < sizeof(struct edgeport_fw_hdr)) {
975 dev_err(dev, "incomplete fw header\n");
976 return -EINVAL;
977 }
978
979 length_total = le16_to_cpu(fw_hdr->length) +
980 sizeof(struct edgeport_fw_hdr);
981
982 if (fw->size != length_total) {
983 dev_err(dev, "bad fw size (expected: %u, got: %zu)\n",
984 length_total, fw->size);
985 return -EINVAL;
986 }
987
988 for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos)
989 checksum += fw->data[pos];
990
991 if (checksum != fw_hdr->checksum) {
992 dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n",
993 fw_hdr->checksum, checksum);
994 return -EINVAL;
995 }
996
997 return 0;
998}
999
1000/*
1001 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1002 *
1003 * This routine downloads the main operating code into the TI5052, using the
1004 * boot code already burned into E2PROM or ROM.
1005 */
1006static int download_fw(struct edgeport_serial *serial)
1007{
1008 struct device *dev = &serial->serial->interface->dev;
1009 int status = 0;
1010 struct usb_interface_descriptor *interface;
1011 const struct firmware *fw;
1012 const char *fw_name = "edgeport/down3.bin";
1013 struct edgeport_fw_hdr *fw_hdr;
1014
1015 status = request_firmware(&fw, fw_name, dev);
1016 if (status) {
1017 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1018 fw_name, status);
1019 return status;
1020 }
1021
1022 if (check_fw_sanity(serial, fw)) {
1023 status = -EINVAL;
1024 goto out;
1025 }
1026
1027 fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1028
1029 /* If on-board version is newer, "fw_version" will be updated later. */
1030 serial->fw_version = (fw_hdr->major_version << 8) +
1031 fw_hdr->minor_version;
1032
1033 /*
1034 * This routine is entered by both the BOOT mode and the Download mode
1035 * We can determine which code is running by the reading the config
1036 * descriptor and if we have only one bulk pipe it is in boot mode
1037 */
1038 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1039
1040 /* Default to type 2 i2c */
1041 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1042
1043 status = choose_config(serial->serial->dev);
1044 if (status)
1045 goto out;
1046
1047 interface = &serial->serial->interface->cur_altsetting->desc;
1048 if (!interface) {
1049 dev_err(dev, "%s - no interface set, error!\n", __func__);
1050 status = -ENODEV;
1051 goto out;
1052 }
1053
1054 /*
1055 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1056 * if we have more than one endpoint we are definitely in download
1057 * mode
1058 */
1059 if (interface->bNumEndpoints > 1) {
1060 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1061 status = do_download_mode(serial, fw);
1062 } else {
1063 /* Otherwise we will remain in configuring mode */
1064 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1065 status = do_boot_mode(serial, fw);
1066 }
1067
1068out:
1069 release_firmware(fw);
1070 return status;
1071}
1072
1073static int do_download_mode(struct edgeport_serial *serial,
1074 const struct firmware *fw)
1075{
1076 struct device *dev = &serial->serial->interface->dev;
1077 int status = 0;
1078 int start_address;
1079 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1080 int download_cur_ver;
1081 int download_new_ver;
1082 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1083 struct ti_i2c_desc *rom_desc;
1084
1085 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1086
1087 status = check_i2c_image(serial);
1088 if (status) {
1089 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1090 return status;
1091 }
1092
1093 /*
1094 * Validate Hardware version number
1095 * Read Manufacturing Descriptor from TI Based Edgeport
1096 */
1097 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1098 if (!ti_manuf_desc)
1099 return -ENOMEM;
1100
1101 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1102 if (status) {
1103 kfree(ti_manuf_desc);
1104 return status;
1105 }
1106
1107 /* Check version number of ION descriptor */
1108 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1109 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1110 __func__, ti_cpu_rev(ti_manuf_desc));
1111 kfree(ti_manuf_desc);
1112 return -EINVAL;
1113 }
1114
1115 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1116 if (!rom_desc) {
1117 kfree(ti_manuf_desc);
1118 return -ENOMEM;
1119 }
1120
1121 /* Search for type 2 record (firmware record) */
1122 start_address = get_descriptor_addr(serial,
1123 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1124 if (start_address != 0) {
1125 struct ti_i2c_firmware_rec *firmware_version;
1126 u8 *record;
1127
1128 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n",
1129 __func__);
1130
1131 firmware_version = kmalloc(sizeof(*firmware_version),
1132 GFP_KERNEL);
1133 if (!firmware_version) {
1134 kfree(rom_desc);
1135 kfree(ti_manuf_desc);
1136 return -ENOMEM;
1137 }
1138
1139 /*
1140 * Validate version number
1141 * Read the descriptor data
1142 */
1143 status = read_rom(serial, start_address +
1144 sizeof(struct ti_i2c_desc),
1145 sizeof(struct ti_i2c_firmware_rec),
1146 (__u8 *)firmware_version);
1147 if (status) {
1148 kfree(firmware_version);
1149 kfree(rom_desc);
1150 kfree(ti_manuf_desc);
1151 return status;
1152 }
1153
1154 /*
1155 * Check version number of download with current
1156 * version in I2c
1157 */
1158 download_cur_ver = (firmware_version->Ver_Major << 8) +
1159 (firmware_version->Ver_Minor);
1160 download_new_ver = (fw_hdr->major_version << 8) +
1161 (fw_hdr->minor_version);
1162
1163 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1164 __func__, firmware_version->Ver_Major,
1165 firmware_version->Ver_Minor,
1166 fw_hdr->major_version, fw_hdr->minor_version);
1167
1168 /*
1169 * Check if we have an old version in the I2C and
1170 * update if necessary
1171 */
1172 if (download_cur_ver < download_new_ver) {
1173 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1174 __func__,
1175 firmware_version->Ver_Major,
1176 firmware_version->Ver_Minor,
1177 fw_hdr->major_version,
1178 fw_hdr->minor_version);
1179
1180 record = kmalloc(1, GFP_KERNEL);
1181 if (!record) {
1182 kfree(firmware_version);
1183 kfree(rom_desc);
1184 kfree(ti_manuf_desc);
1185 return -ENOMEM;
1186 }
1187 /*
1188 * In order to update the I2C firmware we must
1189 * change the type 2 record to type 0xF2. This
1190 * will force the UMP to come up in Boot Mode.
1191 * Then while in boot mode, the driver will
1192 * download the latest firmware (padded to
1193 * 15.5k) into the UMP ram. Finally when the
1194 * device comes back up in download mode the
1195 * driver will cause the new firmware to be
1196 * copied from the UMP Ram to I2C and the
1197 * firmware will update the record type from
1198 * 0xf2 to 0x02.
1199 */
1200 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1201
1202 /*
1203 * Change the I2C Firmware record type to
1204 * 0xf2 to trigger an update
1205 */
1206 status = write_rom(serial, start_address,
1207 sizeof(*record), record);
1208 if (status) {
1209 kfree(record);
1210 kfree(firmware_version);
1211 kfree(rom_desc);
1212 kfree(ti_manuf_desc);
1213 return status;
1214 }
1215
1216 /*
1217 * verify the write -- must do this in order
1218 * for write to complete before we do the
1219 * hardware reset
1220 */
1221 status = read_rom(serial,
1222 start_address,
1223 sizeof(*record),
1224 record);
1225 if (status) {
1226 kfree(record);
1227 kfree(firmware_version);
1228 kfree(rom_desc);
1229 kfree(ti_manuf_desc);
1230 return status;
1231 }
1232
1233 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1234 dev_err(dev, "%s - error resetting device\n",
1235 __func__);
1236 kfree(record);
1237 kfree(firmware_version);
1238 kfree(rom_desc);
1239 kfree(ti_manuf_desc);
1240 return -ENODEV;
1241 }
1242
1243 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1244
1245 /* Reset UMP -- Back to BOOT MODE */
1246 status = ti_vsend_sync(serial->serial->dev,
1247 UMPC_HARDWARE_RESET,
1248 0, 0, NULL, 0,
1249 TI_VSEND_TIMEOUT_DEFAULT);
1250
1251 dev_dbg(dev, "%s - HARDWARE RESET return %d\n",
1252 __func__, status);
1253
1254 /* return an error on purpose. */
1255 kfree(record);
1256 kfree(firmware_version);
1257 kfree(rom_desc);
1258 kfree(ti_manuf_desc);
1259 return -ENODEV;
1260 }
1261 /* Same or newer fw version is already loaded */
1262 serial->fw_version = download_cur_ver;
1263 kfree(firmware_version);
1264 }
1265 /* Search for type 0xF2 record (firmware blank record) */
1266 else {
1267 start_address = get_descriptor_addr(serial,
1268 I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc);
1269 if (start_address != 0) {
1270#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1271 sizeof(struct ti_i2c_firmware_rec))
1272 __u8 *header;
1273 __u8 *vheader;
1274
1275 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1276 if (!header) {
1277 kfree(rom_desc);
1278 kfree(ti_manuf_desc);
1279 return -ENOMEM;
1280 }
1281
1282 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1283 if (!vheader) {
1284 kfree(header);
1285 kfree(rom_desc);
1286 kfree(ti_manuf_desc);
1287 return -ENOMEM;
1288 }
1289
1290 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n",
1291 __func__);
1292
1293 /*
1294 * In order to update the I2C firmware we must change
1295 * the type 2 record to type 0xF2. This will force the
1296 * UMP to come up in Boot Mode. Then while in boot
1297 * mode, the driver will download the latest firmware
1298 * (padded to 15.5k) into the UMP ram. Finally when the
1299 * device comes back up in download mode the driver
1300 * will cause the new firmware to be copied from the
1301 * UMP Ram to I2C and the firmware will update the
1302 * record type from 0xf2 to 0x02.
1303 */
1304 status = build_i2c_fw_hdr(header, fw);
1305 if (status) {
1306 kfree(vheader);
1307 kfree(header);
1308 kfree(rom_desc);
1309 kfree(ti_manuf_desc);
1310 return -EINVAL;
1311 }
1312
1313 /*
1314 * Update I2C with type 0xf2 record with correct
1315 * size and checksum
1316 */
1317 status = write_rom(serial,
1318 start_address,
1319 HEADER_SIZE,
1320 header);
1321 if (status) {
1322 kfree(vheader);
1323 kfree(header);
1324 kfree(rom_desc);
1325 kfree(ti_manuf_desc);
1326 return -EINVAL;
1327 }
1328
1329 /*
1330 * verify the write -- must do this in order for
1331 * write to complete before we do the hardware reset
1332 */
1333 status = read_rom(serial, start_address,
1334 HEADER_SIZE, vheader);
1335
1336 if (status) {
1337 dev_dbg(dev, "%s - can't read header back\n",
1338 __func__);
1339 kfree(vheader);
1340 kfree(header);
1341 kfree(rom_desc);
1342 kfree(ti_manuf_desc);
1343 return status;
1344 }
1345 if (memcmp(vheader, header, HEADER_SIZE)) {
1346 dev_dbg(dev, "%s - write download record failed\n",
1347 __func__);
1348 kfree(vheader);
1349 kfree(header);
1350 kfree(rom_desc);
1351 kfree(ti_manuf_desc);
1352 return -EINVAL;
1353 }
1354
1355 kfree(vheader);
1356 kfree(header);
1357
1358 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1359
1360 /* Tell firmware to copy download image into I2C */
1361 status = ti_vsend_sync(serial->serial->dev,
1362 UMPC_COPY_DNLD_TO_I2C,
1363 0, 0, NULL, 0,
1364 TI_VSEND_TIMEOUT_FW_DOWNLOAD);
1365
1366 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__,
1367 status);
1368 if (status) {
1369 dev_err(dev,
1370 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1371 __func__);
1372 kfree(rom_desc);
1373 kfree(ti_manuf_desc);
1374 return status;
1375 }
1376 }
1377 }
1378
1379 /* The device is running the download code */
1380 kfree(rom_desc);
1381 kfree(ti_manuf_desc);
1382 return 0;
1383}
1384
1385static int do_boot_mode(struct edgeport_serial *serial,
1386 const struct firmware *fw)
1387{
1388 struct device *dev = &serial->serial->interface->dev;
1389 int status = 0;
1390 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1391 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1392
1393 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1394
1395 /* Configure the TI device so we can use the BULK pipes for download */
1396 status = config_boot_dev(serial->serial->dev);
1397 if (status)
1398 return status;
1399
1400 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1401 != USB_VENDOR_ID_ION) {
1402 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1403 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1404 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1405 goto stayinbootmode;
1406 }
1407
1408 /*
1409 * We have an ION device (I2c Must be programmed)
1410 * Determine I2C image type
1411 */
1412 if (i2c_type_bootmode(serial))
1413 goto stayinbootmode;
1414
1415 /* Check for ION Vendor ID and that the I2C is valid */
1416 if (!check_i2c_image(serial)) {
1417 struct ti_i2c_image_header *header;
1418 int i;
1419 __u8 cs = 0;
1420 __u8 *buffer;
1421 int buffer_size;
1422
1423 /*
1424 * Validate Hardware version number
1425 * Read Manufacturing Descriptor from TI Based Edgeport
1426 */
1427 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1428 if (!ti_manuf_desc)
1429 return -ENOMEM;
1430
1431 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1432 if (status) {
1433 kfree(ti_manuf_desc);
1434 goto stayinbootmode;
1435 }
1436
1437 /* Check for version 2 */
1438 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1439 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1440 __func__, ti_cpu_rev(ti_manuf_desc));
1441 kfree(ti_manuf_desc);
1442 goto stayinbootmode;
1443 }
1444
1445 kfree(ti_manuf_desc);
1446
1447 /*
1448 * In order to update the I2C firmware we must change the type
1449 * 2 record to type 0xF2. This will force the UMP to come up
1450 * in Boot Mode. Then while in boot mode, the driver will
1451 * download the latest firmware (padded to 15.5k) into the
1452 * UMP ram. Finally when the device comes back up in download
1453 * mode the driver will cause the new firmware to be copied
1454 * from the UMP Ram to I2C and the firmware will update the
1455 * record type from 0xf2 to 0x02.
1456 *
1457 * Do we really have to copy the whole firmware image,
1458 * or could we do this in place!
1459 */
1460
1461 /* Allocate a 15.5k buffer + 3 byte header */
1462 buffer_size = (((1024 * 16) - 512) +
1463 sizeof(struct ti_i2c_image_header));
1464 buffer = kmalloc(buffer_size, GFP_KERNEL);
1465 if (!buffer)
1466 return -ENOMEM;
1467
1468 /* Initialize the buffer to 0xff (pad the buffer) */
1469 memset(buffer, 0xff, buffer_size);
1470 memcpy(buffer, &fw->data[4], fw->size - 4);
1471
1472 for (i = sizeof(struct ti_i2c_image_header);
1473 i < buffer_size; i++) {
1474 cs = (__u8)(cs + buffer[i]);
1475 }
1476
1477 header = (struct ti_i2c_image_header *)buffer;
1478
1479 /* update length and checksum after padding */
1480 header->Length = cpu_to_le16((__u16)(buffer_size -
1481 sizeof(struct ti_i2c_image_header)));
1482 header->CheckSum = cs;
1483
1484 /* Download the operational code */
1485 dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n",
1486 __func__,
1487 fw_hdr->major_version, fw_hdr->minor_version);
1488 status = download_code(serial, buffer, buffer_size);
1489
1490 kfree(buffer);
1491
1492 if (status) {
1493 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1494 return status;
1495 }
1496
1497 /* Device will reboot */
1498 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1499
1500 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1501
1502 /* return an error on purpose */
1503 return -ENODEV;
1504 }
1505
1506stayinbootmode:
1507 /* Eprom is invalid or blank stay in boot mode */
1508 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1509 serial->product_info.TiMode = TI_MODE_BOOT;
1510
1511 return 0;
1512}
1513
1514static int ti_do_config(struct edgeport_port *port, int feature, int on)
1515{
1516 int port_number = port->port->port_number;
1517
1518 on = !!on; /* 1 or 0 not bitmask */
1519 return send_cmd(port->port->serial->dev,
1520 feature, (__u8)(UMPM_UART1_PORT + port_number),
1521 on, NULL, 0);
1522}
1523
1524static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1525{
1526 int status = 0;
1527
1528 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1529
1530 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1531 if (status)
1532 return status;
1533 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1534 if (status)
1535 return status;
1536 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1537}
1538
1539/* Convert TI LSR to standard UART flags */
1540static __u8 map_line_status(__u8 ti_lsr)
1541{
1542 __u8 lsr = 0;
1543
1544#define MAP_FLAG(flagUmp, flagUart) \
1545 if (ti_lsr & flagUmp) \
1546 lsr |= flagUart;
1547
1548 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1549 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1550 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1551 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1552 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1553 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1554
1555#undef MAP_FLAG
1556
1557 return lsr;
1558}
1559
1560static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1561{
1562 struct async_icount *icount;
1563 struct tty_struct *tty;
1564
1565 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1566
1567 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1568 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1569 icount = &edge_port->port->icount;
1570
1571 /* update input line counters */
1572 if (msr & EDGEPORT_MSR_DELTA_CTS)
1573 icount->cts++;
1574 if (msr & EDGEPORT_MSR_DELTA_DSR)
1575 icount->dsr++;
1576 if (msr & EDGEPORT_MSR_DELTA_CD)
1577 icount->dcd++;
1578 if (msr & EDGEPORT_MSR_DELTA_RI)
1579 icount->rng++;
1580 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1581 }
1582
1583 /* Save the new modem status */
1584 edge_port->shadow_msr = msr & 0xf0;
1585
1586 tty = tty_port_tty_get(&edge_port->port->port);
1587 /* handle CTS flow control */
1588 if (tty && C_CRTSCTS(tty)) {
1589 if (msr & EDGEPORT_MSR_CTS)
1590 tty_wakeup(tty);
1591 }
1592 tty_kref_put(tty);
1593}
1594
1595static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1596 __u8 lsr, __u8 data)
1597{
1598 struct async_icount *icount;
1599 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1600 LSR_FRM_ERR | LSR_BREAK));
1601
1602 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1603
1604 edge_port->shadow_lsr = lsr;
1605
1606 if (new_lsr & LSR_BREAK)
1607 /*
1608 * Parity and Framing errors only count if they
1609 * occur exclusive of a break being received.
1610 */
1611 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1612
1613 /* Place LSR data byte into Rx buffer */
1614 if (lsr_data)
1615 edge_tty_recv(edge_port->port, &data, 1);
1616
1617 /* update input line counters */
1618 icount = &edge_port->port->icount;
1619 if (new_lsr & LSR_BREAK)
1620 icount->brk++;
1621 if (new_lsr & LSR_OVER_ERR)
1622 icount->overrun++;
1623 if (new_lsr & LSR_PAR_ERR)
1624 icount->parity++;
1625 if (new_lsr & LSR_FRM_ERR)
1626 icount->frame++;
1627}
1628
1629static void edge_interrupt_callback(struct urb *urb)
1630{
1631 struct edgeport_serial *edge_serial = urb->context;
1632 struct usb_serial_port *port;
1633 struct edgeport_port *edge_port;
1634 struct device *dev;
1635 unsigned char *data = urb->transfer_buffer;
1636 int length = urb->actual_length;
1637 int port_number;
1638 int function;
1639 int retval;
1640 __u8 lsr;
1641 __u8 msr;
1642 int status = urb->status;
1643
1644 switch (status) {
1645 case 0:
1646 /* success */
1647 break;
1648 case -ECONNRESET:
1649 case -ENOENT:
1650 case -ESHUTDOWN:
1651 /* this urb is terminated, clean up */
1652 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1653 __func__, status);
1654 return;
1655 default:
1656 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1657 "%d\n", __func__, status);
1658 goto exit;
1659 }
1660
1661 if (!length) {
1662 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1663 goto exit;
1664 }
1665
1666 dev = &edge_serial->serial->dev->dev;
1667 usb_serial_debug_data(dev, __func__, length, data);
1668
1669 if (length != 2) {
1670 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1671 goto exit;
1672 }
1673
1674 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1675 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1676 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1677 port_number, function, data[1]);
1678 port = edge_serial->serial->port[port_number];
1679 edge_port = usb_get_serial_port_data(port);
1680 if (!edge_port) {
1681 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1682 return;
1683 }
1684 switch (function) {
1685 case TIUMP_INTERRUPT_CODE_LSR:
1686 lsr = map_line_status(data[1]);
1687 if (lsr & UMP_UART_LSR_DATA_MASK) {
1688 /*
1689 * Save the LSR event for bulk read completion routine
1690 */
1691 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1692 __func__, port_number, lsr);
1693 edge_port->lsr_event = 1;
1694 edge_port->lsr_mask = lsr;
1695 } else {
1696 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1697 __func__, port_number, lsr);
1698 handle_new_lsr(edge_port, 0, lsr, 0);
1699 }
1700 break;
1701
1702 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1703 /* Copy MSR from UMP */
1704 msr = data[1];
1705 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1706 __func__, port_number, msr);
1707 handle_new_msr(edge_port, msr);
1708 break;
1709
1710 default:
1711 dev_err(&urb->dev->dev,
1712 "%s - Unknown Interrupt code from UMP %x\n",
1713 __func__, data[1]);
1714 break;
1715
1716 }
1717
1718exit:
1719 retval = usb_submit_urb(urb, GFP_ATOMIC);
1720 if (retval)
1721 dev_err(&urb->dev->dev,
1722 "%s - usb_submit_urb failed with result %d\n",
1723 __func__, retval);
1724}
1725
1726static void edge_bulk_in_callback(struct urb *urb)
1727{
1728 struct edgeport_port *edge_port = urb->context;
1729 struct device *dev = &edge_port->port->dev;
1730 unsigned char *data = urb->transfer_buffer;
1731 int retval = 0;
1732 int port_number;
1733 int status = urb->status;
1734
1735 switch (status) {
1736 case 0:
1737 /* success */
1738 break;
1739 case -ECONNRESET:
1740 case -ENOENT:
1741 case -ESHUTDOWN:
1742 /* this urb is terminated, clean up */
1743 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1744 return;
1745 default:
1746 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1747 }
1748
1749 if (status == -EPIPE)
1750 goto exit;
1751
1752 if (status) {
1753 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1754 return;
1755 }
1756
1757 port_number = edge_port->port->port_number;
1758
1759 if (edge_port->lsr_event) {
1760 edge_port->lsr_event = 0;
1761 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1762 __func__, port_number, edge_port->lsr_mask, *data);
1763 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1764 /* Adjust buffer length/pointer */
1765 --urb->actual_length;
1766 ++data;
1767 }
1768
1769 if (urb->actual_length) {
1770 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1771 if (edge_port->close_pending)
1772 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1773 __func__);
1774 else
1775 edge_tty_recv(edge_port->port, data,
1776 urb->actual_length);
1777 edge_port->port->icount.rx += urb->actual_length;
1778 }
1779
1780exit:
1781 /* continue read unless stopped */
1782 spin_lock(&edge_port->ep_lock);
1783 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1784 retval = usb_submit_urb(urb, GFP_ATOMIC);
1785 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1786 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1787
1788 spin_unlock(&edge_port->ep_lock);
1789 if (retval)
1790 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1791}
1792
1793static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1794 int length)
1795{
1796 int queued;
1797
1798 queued = tty_insert_flip_string(&port->port, data, length);
1799 if (queued < length)
1800 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1801 __func__, length - queued);
1802 tty_flip_buffer_push(&port->port);
1803}
1804
1805static void edge_bulk_out_callback(struct urb *urb)
1806{
1807 struct usb_serial_port *port = urb->context;
1808 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1809 int status = urb->status;
1810 struct tty_struct *tty;
1811
1812 edge_port->ep_write_urb_in_use = 0;
1813
1814 switch (status) {
1815 case 0:
1816 /* success */
1817 break;
1818 case -ECONNRESET:
1819 case -ENOENT:
1820 case -ESHUTDOWN:
1821 /* this urb is terminated, clean up */
1822 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1823 __func__, status);
1824 return;
1825 default:
1826 dev_err_console(port, "%s - nonzero write bulk status "
1827 "received: %d\n", __func__, status);
1828 }
1829
1830 /* send any buffered data */
1831 tty = tty_port_tty_get(&port->port);
1832 edge_send(port, tty);
1833 tty_kref_put(tty);
1834}
1835
1836static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1837{
1838 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1839 struct edgeport_serial *edge_serial;
1840 struct usb_device *dev;
1841 struct urb *urb;
1842 int port_number;
1843 int status;
1844 u16 open_settings;
1845 u8 transaction_timeout;
1846
1847 if (edge_port == NULL)
1848 return -ENODEV;
1849
1850 port_number = port->port_number;
1851
1852 dev = port->serial->dev;
1853
1854 /* turn off loopback */
1855 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1856 if (status) {
1857 dev_err(&port->dev,
1858 "%s - cannot send clear loopback command, %d\n",
1859 __func__, status);
1860 return status;
1861 }
1862
1863 /* set up the port settings */
1864 if (tty)
1865 edge_set_termios(tty, port, &tty->termios);
1866
1867 /* open up the port */
1868
1869 /* milliseconds to timeout for DMA transfer */
1870 transaction_timeout = 2;
1871
1872 edge_port->ump_read_timeout =
1873 max(20, ((transaction_timeout * 3) / 2));
1874
1875 /* milliseconds to timeout for DMA transfer */
1876 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1877 UMP_PIPE_TRANS_TIMEOUT_ENA |
1878 (transaction_timeout << 2));
1879
1880 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1881
1882 /* Tell TI to open and start the port */
1883 status = send_cmd(dev, UMPC_OPEN_PORT,
1884 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1885 if (status) {
1886 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1887 __func__, status);
1888 return status;
1889 }
1890
1891 /* Start the DMA? */
1892 status = send_cmd(dev, UMPC_START_PORT,
1893 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1894 if (status) {
1895 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1896 __func__, status);
1897 return status;
1898 }
1899
1900 /* Clear TX and RX buffers in UMP */
1901 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1902 if (status) {
1903 dev_err(&port->dev,
1904 "%s - cannot send clear buffers command, %d\n",
1905 __func__, status);
1906 return status;
1907 }
1908
1909 /* Read Initial MSR */
1910 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1911 (__u16)(UMPM_UART1_PORT + port_number),
1912 &edge_port->shadow_msr, 1);
1913 if (status) {
1914 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1915 __func__, status);
1916 return status;
1917 }
1918
1919 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1920
1921 /* Set Initial MCR */
1922 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1923 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1924
1925 edge_serial = edge_port->edge_serial;
1926 if (mutex_lock_interruptible(&edge_serial->es_lock))
1927 return -ERESTARTSYS;
1928 if (edge_serial->num_ports_open == 0) {
1929 /* we are the first port to open, post the interrupt urb */
1930 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1931 if (!urb) {
1932 dev_err(&port->dev,
1933 "%s - no interrupt urb present, exiting\n",
1934 __func__);
1935 status = -EINVAL;
1936 goto release_es_lock;
1937 }
1938 urb->context = edge_serial;
1939 status = usb_submit_urb(urb, GFP_KERNEL);
1940 if (status) {
1941 dev_err(&port->dev,
1942 "%s - usb_submit_urb failed with value %d\n",
1943 __func__, status);
1944 goto release_es_lock;
1945 }
1946 }
1947
1948 /*
1949 * reset the data toggle on the bulk endpoints to work around bug in
1950 * host controllers where things get out of sync some times
1951 */
1952 usb_clear_halt(dev, port->write_urb->pipe);
1953 usb_clear_halt(dev, port->read_urb->pipe);
1954
1955 /* start up our bulk read urb */
1956 urb = port->read_urb;
1957 if (!urb) {
1958 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1959 __func__);
1960 status = -EINVAL;
1961 goto unlink_int_urb;
1962 }
1963 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1964 urb->context = edge_port;
1965 status = usb_submit_urb(urb, GFP_KERNEL);
1966 if (status) {
1967 dev_err(&port->dev,
1968 "%s - read bulk usb_submit_urb failed with value %d\n",
1969 __func__, status);
1970 goto unlink_int_urb;
1971 }
1972
1973 ++edge_serial->num_ports_open;
1974
1975 goto release_es_lock;
1976
1977unlink_int_urb:
1978 if (edge_port->edge_serial->num_ports_open == 0)
1979 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1980release_es_lock:
1981 mutex_unlock(&edge_serial->es_lock);
1982 return status;
1983}
1984
1985static void edge_close(struct usb_serial_port *port)
1986{
1987 struct edgeport_serial *edge_serial;
1988 struct edgeport_port *edge_port;
1989 struct usb_serial *serial = port->serial;
1990 unsigned long flags;
1991 int port_number;
1992
1993 edge_serial = usb_get_serial_data(port->serial);
1994 edge_port = usb_get_serial_port_data(port);
1995 if (edge_serial == NULL || edge_port == NULL)
1996 return;
1997
1998 /*
1999 * The bulkreadcompletion routine will check
2000 * this flag and dump add read data
2001 */
2002 edge_port->close_pending = 1;
2003
2004 usb_kill_urb(port->read_urb);
2005 usb_kill_urb(port->write_urb);
2006 edge_port->ep_write_urb_in_use = 0;
2007 spin_lock_irqsave(&edge_port->ep_lock, flags);
2008 kfifo_reset_out(&port->write_fifo);
2009 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2010
2011 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
2012 port_number = port->port_number;
2013 send_cmd(serial->dev, UMPC_CLOSE_PORT,
2014 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
2015
2016 mutex_lock(&edge_serial->es_lock);
2017 --edge_port->edge_serial->num_ports_open;
2018 if (edge_port->edge_serial->num_ports_open <= 0) {
2019 /* last port is now closed, let's shut down our interrupt urb */
2020 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2021 edge_port->edge_serial->num_ports_open = 0;
2022 }
2023 mutex_unlock(&edge_serial->es_lock);
2024 edge_port->close_pending = 0;
2025}
2026
2027static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2028 const unsigned char *data, int count)
2029{
2030 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2031
2032 if (count == 0) {
2033 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
2034 return 0;
2035 }
2036
2037 if (edge_port == NULL)
2038 return -ENODEV;
2039 if (edge_port->close_pending == 1)
2040 return -ENODEV;
2041
2042 count = kfifo_in_locked(&port->write_fifo, data, count,
2043 &edge_port->ep_lock);
2044 edge_send(port, tty);
2045
2046 return count;
2047}
2048
2049static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
2050{
2051 int count, result;
2052 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2053 unsigned long flags;
2054
2055 spin_lock_irqsave(&edge_port->ep_lock, flags);
2056
2057 if (edge_port->ep_write_urb_in_use) {
2058 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2059 return;
2060 }
2061
2062 count = kfifo_out(&port->write_fifo,
2063 port->write_urb->transfer_buffer,
2064 port->bulk_out_size);
2065
2066 if (count == 0) {
2067 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2068 return;
2069 }
2070
2071 edge_port->ep_write_urb_in_use = 1;
2072
2073 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2074
2075 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
2076
2077 /* set up our urb */
2078 port->write_urb->transfer_buffer_length = count;
2079
2080 /* send the data out the bulk port */
2081 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2082 if (result) {
2083 dev_err_console(port,
2084 "%s - failed submitting write urb, error %d\n",
2085 __func__, result);
2086 edge_port->ep_write_urb_in_use = 0;
2087 /* TODO: reschedule edge_send */
2088 } else
2089 edge_port->port->icount.tx += count;
2090
2091 /*
2092 * wakeup any process waiting for writes to complete
2093 * there is now more room in the buffer for new writes
2094 */
2095 if (tty)
2096 tty_wakeup(tty);
2097}
2098
2099static int edge_write_room(struct tty_struct *tty)
2100{
2101 struct usb_serial_port *port = tty->driver_data;
2102 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2103 int room = 0;
2104 unsigned long flags;
2105
2106 if (edge_port == NULL)
2107 return 0;
2108 if (edge_port->close_pending == 1)
2109 return 0;
2110
2111 spin_lock_irqsave(&edge_port->ep_lock, flags);
2112 room = kfifo_avail(&port->write_fifo);
2113 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2114
2115 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2116 return room;
2117}
2118
2119static int edge_chars_in_buffer(struct tty_struct *tty)
2120{
2121 struct usb_serial_port *port = tty->driver_data;
2122 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2123 int chars = 0;
2124 unsigned long flags;
2125 if (edge_port == NULL)
2126 return 0;
2127
2128 spin_lock_irqsave(&edge_port->ep_lock, flags);
2129 chars = kfifo_len(&port->write_fifo);
2130 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2131
2132 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2133 return chars;
2134}
2135
2136static bool edge_tx_empty(struct usb_serial_port *port)
2137{
2138 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2139 int ret;
2140
2141 ret = tx_active(edge_port);
2142 if (ret > 0)
2143 return false;
2144
2145 return true;
2146}
2147
2148static void edge_throttle(struct tty_struct *tty)
2149{
2150 struct usb_serial_port *port = tty->driver_data;
2151 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2152 int status;
2153
2154 if (edge_port == NULL)
2155 return;
2156
2157 /* if we are implementing XON/XOFF, send the stop character */
2158 if (I_IXOFF(tty)) {
2159 unsigned char stop_char = STOP_CHAR(tty);
2160 status = edge_write(tty, port, &stop_char, 1);
2161 if (status <= 0) {
2162 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2163 }
2164 }
2165
2166 /*
2167 * if we are implementing RTS/CTS, stop reads
2168 * and the Edgeport will clear the RTS line
2169 */
2170 if (C_CRTSCTS(tty))
2171 stop_read(edge_port);
2172
2173}
2174
2175static void edge_unthrottle(struct tty_struct *tty)
2176{
2177 struct usb_serial_port *port = tty->driver_data;
2178 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2179 int status;
2180
2181 if (edge_port == NULL)
2182 return;
2183
2184 /* if we are implementing XON/XOFF, send the start character */
2185 if (I_IXOFF(tty)) {
2186 unsigned char start_char = START_CHAR(tty);
2187 status = edge_write(tty, port, &start_char, 1);
2188 if (status <= 0) {
2189 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2190 }
2191 }
2192 /*
2193 * if we are implementing RTS/CTS, restart reads
2194 * are the Edgeport will assert the RTS line
2195 */
2196 if (C_CRTSCTS(tty)) {
2197 status = restart_read(edge_port);
2198 if (status)
2199 dev_err(&port->dev,
2200 "%s - read bulk usb_submit_urb failed: %d\n",
2201 __func__, status);
2202 }
2203
2204}
2205
2206static void stop_read(struct edgeport_port *edge_port)
2207{
2208 unsigned long flags;
2209
2210 spin_lock_irqsave(&edge_port->ep_lock, flags);
2211
2212 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2213 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2214 edge_port->shadow_mcr &= ~MCR_RTS;
2215
2216 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2217}
2218
2219static int restart_read(struct edgeport_port *edge_port)
2220{
2221 struct urb *urb;
2222 int status = 0;
2223 unsigned long flags;
2224
2225 spin_lock_irqsave(&edge_port->ep_lock, flags);
2226
2227 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2228 urb = edge_port->port->read_urb;
2229 status = usb_submit_urb(urb, GFP_ATOMIC);
2230 }
2231 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2232 edge_port->shadow_mcr |= MCR_RTS;
2233
2234 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2235
2236 return status;
2237}
2238
2239static void change_port_settings(struct tty_struct *tty,
2240 struct edgeport_port *edge_port, struct ktermios *old_termios)
2241{
2242 struct device *dev = &edge_port->port->dev;
2243 struct ump_uart_config *config;
2244 int baud;
2245 unsigned cflag;
2246 int status;
2247 int port_number = edge_port->port->port_number;
2248
2249 config = kmalloc (sizeof (*config), GFP_KERNEL);
2250 if (!config) {
2251 tty->termios = *old_termios;
2252 return;
2253 }
2254
2255 cflag = tty->termios.c_cflag;
2256
2257 config->wFlags = 0;
2258
2259 /* These flags must be set */
2260 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2261 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2262 config->bUartMode = (__u8)(edge_port->bUartMode);
2263
2264 switch (cflag & CSIZE) {
2265 case CS5:
2266 config->bDataBits = UMP_UART_CHAR5BITS;
2267 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2268 break;
2269 case CS6:
2270 config->bDataBits = UMP_UART_CHAR6BITS;
2271 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2272 break;
2273 case CS7:
2274 config->bDataBits = UMP_UART_CHAR7BITS;
2275 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2276 break;
2277 default:
2278 case CS8:
2279 config->bDataBits = UMP_UART_CHAR8BITS;
2280 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2281 break;
2282 }
2283
2284 if (cflag & PARENB) {
2285 if (cflag & PARODD) {
2286 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2287 config->bParity = UMP_UART_ODDPARITY;
2288 dev_dbg(dev, "%s - parity = odd\n", __func__);
2289 } else {
2290 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2291 config->bParity = UMP_UART_EVENPARITY;
2292 dev_dbg(dev, "%s - parity = even\n", __func__);
2293 }
2294 } else {
2295 config->bParity = UMP_UART_NOPARITY;
2296 dev_dbg(dev, "%s - parity = none\n", __func__);
2297 }
2298
2299 if (cflag & CSTOPB) {
2300 config->bStopBits = UMP_UART_STOPBIT2;
2301 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2302 } else {
2303 config->bStopBits = UMP_UART_STOPBIT1;
2304 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2305 }
2306
2307 /* figure out the flow control settings */
2308 if (cflag & CRTSCTS) {
2309 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2310 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2311 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2312 } else {
2313 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2314 restart_read(edge_port);
2315 }
2316
2317 /*
2318 * if we are implementing XON/XOFF, set the start and stop
2319 * character in the device
2320 */
2321 config->cXon = START_CHAR(tty);
2322 config->cXoff = STOP_CHAR(tty);
2323
2324 /* if we are implementing INBOUND XON/XOFF */
2325 if (I_IXOFF(tty)) {
2326 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2327 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2328 __func__, config->cXon, config->cXoff);
2329 } else
2330 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2331
2332 /* if we are implementing OUTBOUND XON/XOFF */
2333 if (I_IXON(tty)) {
2334 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2335 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2336 __func__, config->cXon, config->cXoff);
2337 } else
2338 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2339
2340 tty->termios.c_cflag &= ~CMSPAR;
2341
2342 /* Round the baud rate */
2343 baud = tty_get_baud_rate(tty);
2344 if (!baud) {
2345 /* pick a default, any default... */
2346 baud = 9600;
2347 } else
2348 tty_encode_baud_rate(tty, baud, baud);
2349
2350 edge_port->baud_rate = baud;
2351 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2352
2353 /* FIXME: Recompute actual baud from divisor here */
2354
2355 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2356
2357 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2358 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2359 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2360 dev_dbg(dev, "bParity: %d\n", config->bParity);
2361 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2362 dev_dbg(dev, "cXon: %d\n", config->cXon);
2363 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2364 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2365
2366 /* move the word values into big endian mode */
2367 cpu_to_be16s(&config->wFlags);
2368 cpu_to_be16s(&config->wBaudRate);
2369
2370 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2371 (__u8)(UMPM_UART1_PORT + port_number),
2372 0, (__u8 *)config, sizeof(*config));
2373 if (status)
2374 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2375 __func__, status);
2376 kfree(config);
2377}
2378
2379static void edge_set_termios(struct tty_struct *tty,
2380 struct usb_serial_port *port, struct ktermios *old_termios)
2381{
2382 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2383 unsigned int cflag;
2384
2385 cflag = tty->termios.c_cflag;
2386
2387 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2388 tty->termios.c_cflag, tty->termios.c_iflag);
2389 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2390 old_termios->c_cflag, old_termios->c_iflag);
2391
2392 if (edge_port == NULL)
2393 return;
2394 /* change the port settings to the new ones specified */
2395 change_port_settings(tty, edge_port, old_termios);
2396}
2397
2398static int edge_tiocmset(struct tty_struct *tty,
2399 unsigned int set, unsigned int clear)
2400{
2401 struct usb_serial_port *port = tty->driver_data;
2402 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2403 unsigned int mcr;
2404 unsigned long flags;
2405
2406 spin_lock_irqsave(&edge_port->ep_lock, flags);
2407 mcr = edge_port->shadow_mcr;
2408 if (set & TIOCM_RTS)
2409 mcr |= MCR_RTS;
2410 if (set & TIOCM_DTR)
2411 mcr |= MCR_DTR;
2412 if (set & TIOCM_LOOP)
2413 mcr |= MCR_LOOPBACK;
2414
2415 if (clear & TIOCM_RTS)
2416 mcr &= ~MCR_RTS;
2417 if (clear & TIOCM_DTR)
2418 mcr &= ~MCR_DTR;
2419 if (clear & TIOCM_LOOP)
2420 mcr &= ~MCR_LOOPBACK;
2421
2422 edge_port->shadow_mcr = mcr;
2423 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2424
2425 restore_mcr(edge_port, mcr);
2426 return 0;
2427}
2428
2429static int edge_tiocmget(struct tty_struct *tty)
2430{
2431 struct usb_serial_port *port = tty->driver_data;
2432 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2433 unsigned int result = 0;
2434 unsigned int msr;
2435 unsigned int mcr;
2436 unsigned long flags;
2437
2438 spin_lock_irqsave(&edge_port->ep_lock, flags);
2439
2440 msr = edge_port->shadow_msr;
2441 mcr = edge_port->shadow_mcr;
2442 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2443 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2444 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2445 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2446 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2447 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2448
2449
2450 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2451 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2452
2453 return result;
2454}
2455
2456static int get_serial_info(struct edgeport_port *edge_port,
2457 struct serial_struct __user *retinfo)
2458{
2459 struct serial_struct tmp;
2460 unsigned cwait;
2461
2462 if (!retinfo)
2463 return -EFAULT;
2464
2465 cwait = edge_port->port->port.closing_wait;
2466 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2467 cwait = jiffies_to_msecs(cwait) / 10;
2468
2469 memset(&tmp, 0, sizeof(tmp));
2470
2471 tmp.type = PORT_16550A;
2472 tmp.line = edge_port->port->minor;
2473 tmp.port = edge_port->port->port_number;
2474 tmp.irq = 0;
2475 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2476 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2477 tmp.baud_base = 9600;
2478 tmp.close_delay = 5*HZ;
2479 tmp.closing_wait = cwait;
2480
2481 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2482 return -EFAULT;
2483 return 0;
2484}
2485
2486static int edge_ioctl(struct tty_struct *tty,
2487 unsigned int cmd, unsigned long arg)
2488{
2489 struct usb_serial_port *port = tty->driver_data;
2490 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2491
2492 switch (cmd) {
2493 case TIOCGSERIAL:
2494 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2495 return get_serial_info(edge_port,
2496 (struct serial_struct __user *) arg);
2497 }
2498 return -ENOIOCTLCMD;
2499}
2500
2501static void edge_break(struct tty_struct *tty, int break_state)
2502{
2503 struct usb_serial_port *port = tty->driver_data;
2504 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2505 int status;
2506 int bv = 0; /* Off */
2507
2508 if (break_state == -1)
2509 bv = 1; /* On */
2510 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2511 if (status)
2512 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2513 __func__, status);
2514}
2515
2516static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial)
2517{
2518 if (!edge_serial->use_heartbeat)
2519 return;
2520
2521 schedule_delayed_work(&edge_serial->heartbeat_work,
2522 FW_HEARTBEAT_SECS * HZ);
2523}
2524
2525static void edge_heartbeat_work(struct work_struct *work)
2526{
2527 struct edgeport_serial *serial;
2528 struct ti_i2c_desc *rom_desc;
2529
2530 serial = container_of(work, struct edgeport_serial,
2531 heartbeat_work.work);
2532
2533 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
2534
2535 /* Descriptor address request is enough to reset the firmware timer */
2536 if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
2537 rom_desc)) {
2538 dev_err(&serial->serial->interface->dev,
2539 "%s - Incomplete heartbeat\n", __func__);
2540 }
2541 kfree(rom_desc);
2542
2543 edge_heartbeat_schedule(serial);
2544}
2545
2546static int edge_startup(struct usb_serial *serial)
2547{
2548 struct edgeport_serial *edge_serial;
2549 int status;
2550 u16 product_id;
2551
2552 /* create our private serial structure */
2553 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2554 if (!edge_serial)
2555 return -ENOMEM;
2556
2557 mutex_init(&edge_serial->es_lock);
2558 edge_serial->serial = serial;
2559 usb_set_serial_data(serial, edge_serial);
2560
2561 status = download_fw(edge_serial);
2562 if (status) {
2563 kfree(edge_serial);
2564 return status;
2565 }
2566
2567 product_id = le16_to_cpu(
2568 edge_serial->serial->dev->descriptor.idProduct);
2569
2570 /* Currently only the EP/416 models require heartbeat support */
2571 if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) {
2572 if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 ||
2573 product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) {
2574 edge_serial->use_heartbeat = true;
2575 }
2576 }
2577
2578 INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work);
2579 edge_heartbeat_schedule(edge_serial);
2580
2581 return 0;
2582}
2583
2584static void edge_disconnect(struct usb_serial *serial)
2585{
2586}
2587
2588static void edge_release(struct usb_serial *serial)
2589{
2590 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2591
2592 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2593 kfree(edge_serial);
2594}
2595
2596static int edge_port_probe(struct usb_serial_port *port)
2597{
2598 struct edgeport_port *edge_port;
2599 int ret;
2600
2601 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2602 if (!edge_port)
2603 return -ENOMEM;
2604
2605 spin_lock_init(&edge_port->ep_lock);
2606 edge_port->port = port;
2607 edge_port->edge_serial = usb_get_serial_data(port->serial);
2608 edge_port->bUartMode = default_uart_mode;
2609
2610 switch (port->port_number) {
2611 case 0:
2612 edge_port->uart_base = UMPMEM_BASE_UART1;
2613 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2614 break;
2615 case 1:
2616 edge_port->uart_base = UMPMEM_BASE_UART2;
2617 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2618 break;
2619 default:
2620 dev_err(&port->dev, "unknown port number\n");
2621 ret = -ENODEV;
2622 goto err;
2623 }
2624
2625 dev_dbg(&port->dev,
2626 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2627 __func__, port->port_number, edge_port->uart_base,
2628 edge_port->dma_address);
2629
2630 usb_set_serial_port_data(port, edge_port);
2631
2632 ret = edge_create_sysfs_attrs(port);
2633 if (ret)
2634 goto err;
2635
2636 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2637 port->port.drain_delay = 1;
2638
2639 return 0;
2640err:
2641 kfree(edge_port);
2642
2643 return ret;
2644}
2645
2646static int edge_port_remove(struct usb_serial_port *port)
2647{
2648 struct edgeport_port *edge_port;
2649
2650 edge_port = usb_get_serial_port_data(port);
2651 edge_remove_sysfs_attrs(port);
2652 kfree(edge_port);
2653
2654 return 0;
2655}
2656
2657/* Sysfs Attributes */
2658
2659static ssize_t uart_mode_show(struct device *dev,
2660 struct device_attribute *attr, char *buf)
2661{
2662 struct usb_serial_port *port = to_usb_serial_port(dev);
2663 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2664
2665 return sprintf(buf, "%d\n", edge_port->bUartMode);
2666}
2667
2668static ssize_t uart_mode_store(struct device *dev,
2669 struct device_attribute *attr, const char *valbuf, size_t count)
2670{
2671 struct usb_serial_port *port = to_usb_serial_port(dev);
2672 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2673 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2674
2675 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2676
2677 if (v < 256)
2678 edge_port->bUartMode = v;
2679 else
2680 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2681
2682 return count;
2683}
2684static DEVICE_ATTR_RW(uart_mode);
2685
2686static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2687{
2688 return device_create_file(&port->dev, &dev_attr_uart_mode);
2689}
2690
2691static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2692{
2693 device_remove_file(&port->dev, &dev_attr_uart_mode);
2694 return 0;
2695}
2696
2697#ifdef CONFIG_PM
2698static int edge_suspend(struct usb_serial *serial, pm_message_t message)
2699{
2700 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2701
2702 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2703
2704 return 0;
2705}
2706
2707static int edge_resume(struct usb_serial *serial)
2708{
2709 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2710
2711 edge_heartbeat_schedule(edge_serial);
2712
2713 return 0;
2714}
2715#endif
2716
2717static struct usb_serial_driver edgeport_1port_device = {
2718 .driver = {
2719 .owner = THIS_MODULE,
2720 .name = "edgeport_ti_1",
2721 },
2722 .description = "Edgeport TI 1 port adapter",
2723 .id_table = edgeport_1port_id_table,
2724 .num_ports = 1,
2725 .open = edge_open,
2726 .close = edge_close,
2727 .throttle = edge_throttle,
2728 .unthrottle = edge_unthrottle,
2729 .attach = edge_startup,
2730 .disconnect = edge_disconnect,
2731 .release = edge_release,
2732 .port_probe = edge_port_probe,
2733 .port_remove = edge_port_remove,
2734 .ioctl = edge_ioctl,
2735 .set_termios = edge_set_termios,
2736 .tiocmget = edge_tiocmget,
2737 .tiocmset = edge_tiocmset,
2738 .tiocmiwait = usb_serial_generic_tiocmiwait,
2739 .get_icount = usb_serial_generic_get_icount,
2740 .write = edge_write,
2741 .write_room = edge_write_room,
2742 .chars_in_buffer = edge_chars_in_buffer,
2743 .tx_empty = edge_tx_empty,
2744 .break_ctl = edge_break,
2745 .read_int_callback = edge_interrupt_callback,
2746 .read_bulk_callback = edge_bulk_in_callback,
2747 .write_bulk_callback = edge_bulk_out_callback,
2748#ifdef CONFIG_PM
2749 .suspend = edge_suspend,
2750 .resume = edge_resume,
2751#endif
2752};
2753
2754static struct usb_serial_driver edgeport_2port_device = {
2755 .driver = {
2756 .owner = THIS_MODULE,
2757 .name = "edgeport_ti_2",
2758 },
2759 .description = "Edgeport TI 2 port adapter",
2760 .id_table = edgeport_2port_id_table,
2761 .num_ports = 2,
2762 .open = edge_open,
2763 .close = edge_close,
2764 .throttle = edge_throttle,
2765 .unthrottle = edge_unthrottle,
2766 .attach = edge_startup,
2767 .disconnect = edge_disconnect,
2768 .release = edge_release,
2769 .port_probe = edge_port_probe,
2770 .port_remove = edge_port_remove,
2771 .ioctl = edge_ioctl,
2772 .set_termios = edge_set_termios,
2773 .tiocmget = edge_tiocmget,
2774 .tiocmset = edge_tiocmset,
2775 .tiocmiwait = usb_serial_generic_tiocmiwait,
2776 .get_icount = usb_serial_generic_get_icount,
2777 .write = edge_write,
2778 .write_room = edge_write_room,
2779 .chars_in_buffer = edge_chars_in_buffer,
2780 .tx_empty = edge_tx_empty,
2781 .break_ctl = edge_break,
2782 .read_int_callback = edge_interrupt_callback,
2783 .read_bulk_callback = edge_bulk_in_callback,
2784 .write_bulk_callback = edge_bulk_out_callback,
2785#ifdef CONFIG_PM
2786 .suspend = edge_suspend,
2787 .resume = edge_resume,
2788#endif
2789};
2790
2791static struct usb_serial_driver * const serial_drivers[] = {
2792 &edgeport_1port_device, &edgeport_2port_device, NULL
2793};
2794
2795module_usb_serial_driver(serial_drivers, id_table_combined);
2796
2797MODULE_AUTHOR(DRIVER_AUTHOR);
2798MODULE_DESCRIPTION(DRIVER_DESC);
2799MODULE_LICENSE("GPL");
2800MODULE_FIRMWARE("edgeport/down3.bin");
2801
2802module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2803MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2804
2805module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2806MODULE_PARM_DESC(ignore_cpu_rev,
2807 "Ignore the cpu revision when connecting to a device");
2808
2809module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2810MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");