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