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ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / serial / io_ti.c
blob0aac00afb5c8212403466a3ede7a49b78f63a2e7
1 /*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14 *
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
18 *
19 * Version history:
20 *
21 * July 11, 2002 Removed 4 port device structure since all TI UMP
22 * chips have only 2 ports
23 * David Iacovelli (davidi@ionetworks.com)
24 *
25 */
26
27 #include <linux/kernel.h>
28 #include <linux/jiffies.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/tty.h>
33 #include <linux/tty_driver.h>
34 #include <linux/tty_flip.h>
35 #include <linux/module.h>
36 #include <linux/spinlock.h>
37 #include <linux/mutex.h>
38 #include <linux/serial.h>
39 #include <linux/kfifo.h>
40 #include <linux/ioctl.h>
41 #include <linux/firmware.h>
42 #include <linux/uaccess.h>
43 #include <linux/usb.h>
44 #include <linux/usb/serial.h>
45
46 #include "io_16654.h"
47 #include "io_usbvend.h"
48 #include "io_ti.h"
49
50 /*
51 * Version Information
52 */
53 #define DRIVER_VERSION "v0.7mode043006"
54 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
55 #define DRIVER_DESC "Edgeport USB Serial Driver"
56
57 #define EPROM_PAGE_SIZE 64
58
59
60 /* different hardware types */
61 #define HARDWARE_TYPE_930 0
62 #define HARDWARE_TYPE_TIUMP 1
63
64 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
65 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
66 #define TI_MODE_BOOT 1 /* Staying in boot mode */
67 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
68 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
69 transitioning to download mode */
70
71 /* read urb state */
72 #define EDGE_READ_URB_RUNNING 0
73 #define EDGE_READ_URB_STOPPING 1
74 #define EDGE_READ_URB_STOPPED 2
75
76 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
77
78 #define EDGE_OUT_BUF_SIZE 1024
79
80
81 /* Product information read from the Edgeport */
82 struct product_info {
83 int TiMode; /* Current TI Mode */
84 __u8 hardware_type; /* Type of hardware */
85 } __attribute__((packed));
86
87 struct edgeport_port {
88 __u16 uart_base;
89 __u16 dma_address;
90 __u8 shadow_msr;
91 __u8 shadow_mcr;
92 __u8 shadow_lsr;
93 __u8 lsr_mask;
94 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
95 wait without data before completing
96 a read short */
97 int baud_rate;
98 int close_pending;
99 int lsr_event;
100 struct async_icount icount;
101 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
102 waiting for msr change to
103 happen */
104 struct edgeport_serial *edge_serial;
105 struct usb_serial_port *port;
106 __u8 bUartMode; /* Port type, 0: RS232, etc. */
107 spinlock_t ep_lock;
108 int ep_read_urb_state;
109 int ep_write_urb_in_use;
110 struct kfifo write_fifo;
111 };
112
113 struct edgeport_serial {
114 struct product_info product_info;
115 u8 TI_I2C_Type; /* Type of I2C in UMP */
116 u8 TiReadI2C; /* Set to TRUE if we have read the
117 I2c in Boot Mode */
118 struct mutex es_lock;
119 int num_ports_open;
120 struct usb_serial *serial;
121 };
122
123
124 /* Devices that this driver supports */
125 static const struct usb_device_id edgeport_1port_id_table[] = {
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
142 { }
143 };
144
145 static const struct usb_device_id edgeport_2port_id_table[] = {
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
158 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
164 { }
165 };
166
167 /* Devices that this driver supports */
168 static const struct usb_device_id id_table_combined[] = {
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
202 { }
203 };
204
205 MODULE_DEVICE_TABLE(usb, id_table_combined);
206
207 static struct usb_driver io_driver = {
208 .name = "io_ti",
209 .probe = usb_serial_probe,
210 .disconnect = usb_serial_disconnect,
211 .id_table = id_table_combined,
212 .no_dynamic_id = 1,
213 };
214
215
216 static unsigned char OperationalMajorVersion;
217 static unsigned char OperationalMinorVersion;
218 static unsigned short OperationalBuildNumber;
219
220 static int debug;
221
222 static int closing_wait = EDGE_CLOSING_WAIT;
223 static int ignore_cpu_rev;
224 static int default_uart_mode; /* RS232 */
225
226 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
227 unsigned char *data, int length);
228
229 static void stop_read(struct edgeport_port *edge_port);
230 static int restart_read(struct edgeport_port *edge_port);
231
232 static void edge_set_termios(struct tty_struct *tty,
233 struct usb_serial_port *port, struct ktermios *old_termios);
234 static void edge_send(struct tty_struct *tty);
235
236 /* sysfs attributes */
237 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
238 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
239
240
241 static int ti_vread_sync(struct usb_device *dev, __u8 request,
242 __u16 value, __u16 index, u8 *data, int size)
243 {
244 int status;
245
246 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
247 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
248 value, index, data, size, 1000);
249 if (status < 0)
250 return status;
251 if (status != size) {
252 dbg("%s - wanted to write %d, but only wrote %d",
253 __func__, size, status);
254 return -ECOMM;
255 }
256 return 0;
257 }
258
259 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
260 __u16 value, __u16 index, u8 *data, int size)
261 {
262 int status;
263
264 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
265 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
266 value, index, data, size, 1000);
267 if (status < 0)
268 return status;
269 if (status != size) {
270 dbg("%s - wanted to write %d, but only wrote %d",
271 __func__, size, status);
272 return -ECOMM;
273 }
274 return 0;
275 }
276
277 static int send_cmd(struct usb_device *dev, __u8 command,
278 __u8 moduleid, __u16 value, u8 *data,
279 int size)
280 {
281 return ti_vsend_sync(dev, command, value, moduleid, data, size);
282 }
283
284 /* clear tx/rx buffers and fifo in TI UMP */
285 static int purge_port(struct usb_serial_port *port, __u16 mask)
286 {
287 int port_number = port->number - port->serial->minor;
288
289 dbg("%s - port %d, mask %x", __func__, port_number, mask);
290
291 return send_cmd(port->serial->dev,
292 UMPC_PURGE_PORT,
293 (__u8)(UMPM_UART1_PORT + port_number),
294 mask,
295 NULL,
296 0);
297 }
298
299 /**
300 * read_download_mem - Read edgeport memory from TI chip
301 * @dev: usb device pointer
302 * @start_address: Device CPU address at which to read
303 * @length: Length of above data
304 * @address_type: Can read both XDATA and I2C
305 * @buffer: pointer to input data buffer
306 */
307 static int read_download_mem(struct usb_device *dev, int start_address,
308 int length, __u8 address_type, __u8 *buffer)
309 {
310 int status = 0;
311 __u8 read_length;
312 __be16 be_start_address;
313
314 dbg("%s - @ %x for %d", __func__, start_address, length);
315
316 /* Read in blocks of 64 bytes
317 * (TI firmware can't handle more than 64 byte reads)
318 */
319 while (length) {
320 if (length > 64)
321 read_length = 64;
322 else
323 read_length = (__u8)length;
324
325 if (read_length > 1) {
326 dbg("%s - @ %x for %d", __func__,
327 start_address, read_length);
328 }
329 be_start_address = cpu_to_be16(start_address);
330 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
331 (__u16)address_type,
332 (__force __u16)be_start_address,
333 buffer, read_length);
334
335 if (status) {
336 dbg("%s - ERROR %x", __func__, status);
337 return status;
338 }
339
340 if (read_length > 1)
341 usb_serial_debug_data(debug, &dev->dev, __func__,
342 read_length, buffer);
343
344 /* Update pointers/length */
345 start_address += read_length;
346 buffer += read_length;
347 length -= read_length;
348 }
349
350 return status;
351 }
352
353 static int read_ram(struct usb_device *dev, int start_address,
354 int length, __u8 *buffer)
355 {
356 return read_download_mem(dev, start_address, length,
357 DTK_ADDR_SPACE_XDATA, buffer);
358 }
359
360 /* Read edgeport memory to a given block */
361 static int read_boot_mem(struct edgeport_serial *serial,
362 int start_address, int length, __u8 *buffer)
363 {
364 int status = 0;
365 int i;
366
367 for (i = 0; i < length; i++) {
368 status = ti_vread_sync(serial->serial->dev,
369 UMPC_MEMORY_READ, serial->TI_I2C_Type,
370 (__u16)(start_address+i), &buffer[i], 0x01);
371 if (status) {
372 dbg("%s - ERROR %x", __func__, status);
373 return status;
374 }
375 }
376
377 dbg("%s - start_address = %x, length = %d",
378 __func__, start_address, length);
379 usb_serial_debug_data(debug, &serial->serial->dev->dev,
380 __func__, length, buffer);
381
382 serial->TiReadI2C = 1;
383
384 return status;
385 }
386
387 /* Write given block to TI EPROM memory */
388 static int write_boot_mem(struct edgeport_serial *serial,
389 int start_address, int length, __u8 *buffer)
390 {
391 int status = 0;
392 int i;
393 u8 *temp;
394
395 /* Must do a read before write */
396 if (!serial->TiReadI2C) {
397 temp = kmalloc(1, GFP_KERNEL);
398 if (!temp) {
399 dev_err(&serial->serial->dev->dev,
400 "%s - out of memory\n", __func__);
401 return -ENOMEM;
402 }
403 status = read_boot_mem(serial, 0, 1, temp);
404 kfree(temp);
405 if (status)
406 return status;
407 }
408
409 for (i = 0; i < length; ++i) {
410 status = ti_vsend_sync(serial->serial->dev,
411 UMPC_MEMORY_WRITE, buffer[i],
412 (__u16)(i + start_address), NULL, 0);
413 if (status)
414 return status;
415 }
416
417 dbg("%s - start_sddr = %x, length = %d",
418 __func__, start_address, length);
419 usb_serial_debug_data(debug, &serial->serial->dev->dev,
420 __func__, length, buffer);
421
422 return status;
423 }
424
425
426 /* Write edgeport I2C memory to TI chip */
427 static int write_i2c_mem(struct edgeport_serial *serial,
428 int start_address, int length, __u8 address_type, __u8 *buffer)
429 {
430 int status = 0;
431 int write_length;
432 __be16 be_start_address;
433
434 /* We can only send a maximum of 1 aligned byte page at a time */
435
436 /* calculate the number of bytes left in the first page */
437 write_length = EPROM_PAGE_SIZE -
438 (start_address & (EPROM_PAGE_SIZE - 1));
439
440 if (write_length > length)
441 write_length = length;
442
443 dbg("%s - BytesInFirstPage Addr = %x, length = %d",
444 __func__, start_address, write_length);
445 usb_serial_debug_data(debug, &serial->serial->dev->dev,
446 __func__, write_length, buffer);
447
448 /* Write first page */
449 be_start_address = cpu_to_be16(start_address);
450 status = ti_vsend_sync(serial->serial->dev,
451 UMPC_MEMORY_WRITE, (__u16)address_type,
452 (__force __u16)be_start_address,
453 buffer, write_length);
454 if (status) {
455 dbg("%s - ERROR %d", __func__, status);
456 return status;
457 }
458
459 length -= write_length;
460 start_address += write_length;
461 buffer += write_length;
462
463 /* We should be aligned now -- can write
464 max page size bytes at a time */
465 while (length) {
466 if (length > EPROM_PAGE_SIZE)
467 write_length = EPROM_PAGE_SIZE;
468 else
469 write_length = length;
470
471 dbg("%s - Page Write Addr = %x, length = %d",
472 __func__, start_address, write_length);
473 usb_serial_debug_data(debug, &serial->serial->dev->dev,
474 __func__, write_length, buffer);
475
476 /* Write next page */
477 be_start_address = cpu_to_be16(start_address);
478 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
479 (__u16)address_type,
480 (__force __u16)be_start_address,
481 buffer, write_length);
482 if (status) {
483 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
484 __func__, status);
485 return status;
486 }
487
488 length -= write_length;
489 start_address += write_length;
490 buffer += write_length;
491 }
492 return status;
493 }
494
495 /* Examine the UMP DMA registers and LSR
496 *
497 * Check the MSBit of the X and Y DMA byte count registers.
498 * A zero in this bit indicates that the TX DMA buffers are empty
499 * then check the TX Empty bit in the UART.
500 */
501 static int tx_active(struct edgeport_port *port)
502 {
503 int status;
504 struct out_endpoint_desc_block *oedb;
505 __u8 *lsr;
506 int bytes_left = 0;
507
508 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
509 if (!oedb) {
510 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
511 return -ENOMEM;
512 }
513
514 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
515 as not all platforms can do DMA
516 from stack */
517 if (!lsr) {
518 kfree(oedb);
519 return -ENOMEM;
520 }
521 /* Read the DMA Count Registers */
522 status = read_ram(port->port->serial->dev, port->dma_address,
523 sizeof(*oedb), (void *)oedb);
524 if (status)
525 goto exit_is_tx_active;
526
527 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount);
528
529 /* and the LSR */
530 status = read_ram(port->port->serial->dev,
531 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
532
533 if (status)
534 goto exit_is_tx_active;
535 dbg("%s - LSR = 0x%X", __func__, *lsr);
536
537 /* If either buffer has data or we are transmitting then return TRUE */
538 if ((oedb->XByteCount & 0x80) != 0)
539 bytes_left += 64;
540
541 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
542 bytes_left += 1;
543
544 /* We return Not Active if we get any kind of error */
545 exit_is_tx_active:
546 dbg("%s - return %d", __func__, bytes_left);
547
548 kfree(lsr);
549 kfree(oedb);
550 return bytes_left;
551 }
552
553 static void chase_port(struct edgeport_port *port, unsigned long timeout,
554 int flush)
555 {
556 int baud_rate;
557 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
558 wait_queue_t wait;
559 unsigned long flags;
560
561 if (!timeout)
562 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
563
564 /* wait for data to drain from the buffer */
565 spin_lock_irqsave(&port->ep_lock, flags);
566 init_waitqueue_entry(&wait, current);
567 add_wait_queue(&tty->write_wait, &wait);
568 for (;;) {
569 set_current_state(TASK_INTERRUPTIBLE);
570 if (kfifo_len(&port->write_fifo) == 0
571 || timeout == 0 || signal_pending(current)
572 || !usb_get_intfdata(port->port->serial->interface))
573 /* disconnect */
574 break;
575 spin_unlock_irqrestore(&port->ep_lock, flags);
576 timeout = schedule_timeout(timeout);
577 spin_lock_irqsave(&port->ep_lock, flags);
578 }
579 set_current_state(TASK_RUNNING);
580 remove_wait_queue(&tty->write_wait, &wait);
581 if (flush)
582 kfifo_reset_out(&port->write_fifo);
583 spin_unlock_irqrestore(&port->ep_lock, flags);
584 tty_kref_put(tty);
585
586 /* wait for data to drain from the device */
587 timeout += jiffies;
588 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
589 && usb_get_intfdata(port->port->serial->interface)) {
590 /* not disconnected */
591 if (!tx_active(port))
592 break;
593 msleep(10);
594 }
595
596 /* disconnected */
597 if (!usb_get_intfdata(port->port->serial->interface))
598 return;
599
600 /* wait one more character time, based on baud rate */
601 /* (tx_active doesn't seem to wait for the last byte) */
602 baud_rate = port->baud_rate;
603 if (baud_rate == 0)
604 baud_rate = 50;
605 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
606 }
607
608 static int choose_config(struct usb_device *dev)
609 {
610 /*
611 * There may be multiple configurations on this device, in which case
612 * we would need to read and parse all of them to find out which one
613 * we want. However, we just support one config at this point,
614 * configuration # 1, which is Config Descriptor 0.
615 */
616
617 dbg("%s - Number of Interfaces = %d",
618 __func__, dev->config->desc.bNumInterfaces);
619 dbg("%s - MAX Power = %d",
620 __func__, dev->config->desc.bMaxPower * 2);
621
622 if (dev->config->desc.bNumInterfaces != 1) {
623 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
624 __func__);
625 return -ENODEV;
626 }
627
628 return 0;
629 }
630
631 static int read_rom(struct edgeport_serial *serial,
632 int start_address, int length, __u8 *buffer)
633 {
634 int status;
635
636 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
637 status = read_download_mem(serial->serial->dev,
638 start_address,
639 length,
640 serial->TI_I2C_Type,
641 buffer);
642 } else {
643 status = read_boot_mem(serial, start_address, length,
644 buffer);
645 }
646 return status;
647 }
648
649 static int write_rom(struct edgeport_serial *serial, int start_address,
650 int length, __u8 *buffer)
651 {
652 if (serial->product_info.TiMode == TI_MODE_BOOT)
653 return write_boot_mem(serial, start_address, length,
654 buffer);
655
656 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
657 return write_i2c_mem(serial, start_address, length,
658 serial->TI_I2C_Type, buffer);
659 return -EINVAL;
660 }
661
662
663
664 /* Read a descriptor header from I2C based on type */
665 static int get_descriptor_addr(struct edgeport_serial *serial,
666 int desc_type, struct ti_i2c_desc *rom_desc)
667 {
668 int start_address;
669 int status;
670
671 /* Search for requested descriptor in I2C */
672 start_address = 2;
673 do {
674 status = read_rom(serial,
675 start_address,
676 sizeof(struct ti_i2c_desc),
677 (__u8 *)rom_desc);
678 if (status)
679 return 0;
680
681 if (rom_desc->Type == desc_type)
682 return start_address;
683
684 start_address = start_address + sizeof(struct ti_i2c_desc)
685 + rom_desc->Size;
686
687 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
688
689 return 0;
690 }
691
692 /* Validate descriptor checksum */
693 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
694 {
695 __u16 i;
696 __u8 cs = 0;
697
698 for (i = 0; i < rom_desc->Size; i++)
699 cs = (__u8)(cs + buffer[i]);
700
701 if (cs != rom_desc->CheckSum) {
702 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
703 return -EINVAL;
704 }
705 return 0;
706 }
707
708 /* Make sure that the I2C image is good */
709 static int check_i2c_image(struct edgeport_serial *serial)
710 {
711 struct device *dev = &serial->serial->dev->dev;
712 int status = 0;
713 struct ti_i2c_desc *rom_desc;
714 int start_address = 2;
715 __u8 *buffer;
716 __u16 ttype;
717
718 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
719 if (!rom_desc) {
720 dev_err(dev, "%s - out of memory\n", __func__);
721 return -ENOMEM;
722 }
723 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
724 if (!buffer) {
725 dev_err(dev, "%s - out of memory when allocating buffer\n",
726 __func__);
727 kfree(rom_desc);
728 return -ENOMEM;
729 }
730
731 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
732 status = read_rom(serial, 0, 1, buffer);
733 if (status)
734 goto out;
735
736 if (*buffer != UMP5152 && *buffer != UMP3410) {
737 dev_err(dev, "%s - invalid buffer signature\n", __func__);
738 status = -ENODEV;
739 goto out;
740 }
741
742 do {
743 /* Validate the I2C */
744 status = read_rom(serial,
745 start_address,
746 sizeof(struct ti_i2c_desc),
747 (__u8 *)rom_desc);
748 if (status)
749 break;
750
751 if ((start_address + sizeof(struct ti_i2c_desc) +
752 rom_desc->Size) > TI_MAX_I2C_SIZE) {
753 status = -ENODEV;
754 dbg("%s - structure too big, erroring out.", __func__);
755 break;
756 }
757
758 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
759
760 /* Skip type 2 record */
761 ttype = rom_desc->Type & 0x0f;
762 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
763 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
764 /* Read the descriptor data */
765 status = read_rom(serial, start_address +
766 sizeof(struct ti_i2c_desc),
767 rom_desc->Size, buffer);
768 if (status)
769 break;
770
771 status = valid_csum(rom_desc, buffer);
772 if (status)
773 break;
774 }
775 start_address = start_address + sizeof(struct ti_i2c_desc) +
776 rom_desc->Size;
777
778 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
779 (start_address < TI_MAX_I2C_SIZE));
780
781 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
782 (start_address > TI_MAX_I2C_SIZE))
783 status = -ENODEV;
784
785 out:
786 kfree(buffer);
787 kfree(rom_desc);
788 return status;
789 }
790
791 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
792 {
793 int status;
794 int start_address;
795 struct ti_i2c_desc *rom_desc;
796 struct edge_ti_manuf_descriptor *desc;
797
798 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
799 if (!rom_desc) {
800 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
801 __func__);
802 return -ENOMEM;
803 }
804 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
805 rom_desc);
806
807 if (!start_address) {
808 dbg("%s - Edge Descriptor not found in I2C", __func__);
809 status = -ENODEV;
810 goto exit;
811 }
812
813 /* Read the descriptor data */
814 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
815 rom_desc->Size, buffer);
816 if (status)
817 goto exit;
818
819 status = valid_csum(rom_desc, buffer);
820
821 desc = (struct edge_ti_manuf_descriptor *)buffer;
822 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig);
823 dbg("%s - Version %d", __func__, desc->Version);
824 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev);
825 dbg("%s - NumPorts %d", __func__, desc->NumPorts);
826 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts);
827 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts);
828
829 exit:
830 kfree(rom_desc);
831 return status;
832 }
833
834 /* Build firmware header used for firmware update */
835 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
836 {
837 __u8 *buffer;
838 int buffer_size;
839 int i;
840 int err;
841 __u8 cs = 0;
842 struct ti_i2c_desc *i2c_header;
843 struct ti_i2c_image_header *img_header;
844 struct ti_i2c_firmware_rec *firmware_rec;
845 const struct firmware *fw;
846 const char *fw_name = "edgeport/down3.bin";
847
848 /* In order to update the I2C firmware we must change the type 2 record
849 * to type 0xF2. This will force the UMP to come up in Boot Mode.
850 * Then while in boot mode, the driver will download the latest
851 * firmware (padded to 15.5k) into the UMP ram. And finally when the
852 * device comes back up in download mode the driver will cause the new
853 * firmware to be copied from the UMP Ram to I2C and the firmware will
854 * update the record type from 0xf2 to 0x02.
855 */
856
857 /* Allocate a 15.5k buffer + 2 bytes for version number
858 * (Firmware Record) */
859 buffer_size = (((1024 * 16) - 512 ) +
860 sizeof(struct ti_i2c_firmware_rec));
861
862 buffer = kmalloc(buffer_size, GFP_KERNEL);
863 if (!buffer) {
864 dev_err(dev, "%s - out of memory\n", __func__);
865 return -ENOMEM;
866 }
867
868 // Set entire image of 0xffs
869 memset(buffer, 0xff, buffer_size);
870
871 err = request_firmware(&fw, fw_name, dev);
872 if (err) {
873 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
874 fw_name, err);
875 kfree(buffer);
876 return err;
877 }
878
879 /* Save Download Version Number */
880 OperationalMajorVersion = fw->data[0];
881 OperationalMinorVersion = fw->data[1];
882 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
883
884 /* Copy version number into firmware record */
885 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
886
887 firmware_rec->Ver_Major = OperationalMajorVersion;
888 firmware_rec->Ver_Minor = OperationalMinorVersion;
889
890 /* Pointer to fw_down memory image */
891 img_header = (struct ti_i2c_image_header *)&fw->data[4];
892
893 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
894 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
895 le16_to_cpu(img_header->Length));
896
897 release_firmware(fw);
898
899 for (i=0; i < buffer_size; i++) {
900 cs = (__u8)(cs + buffer[i]);
901 }
902
903 kfree(buffer);
904
905 /* Build new header */
906 i2c_header = (struct ti_i2c_desc *)header;
907 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
908
909 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
910 i2c_header->Size = (__u16)buffer_size;
911 i2c_header->CheckSum = cs;
912 firmware_rec->Ver_Major = OperationalMajorVersion;
913 firmware_rec->Ver_Minor = OperationalMinorVersion;
914
915 return 0;
916 }
917
918 /* Try to figure out what type of I2c we have */
919 static int i2c_type_bootmode(struct edgeport_serial *serial)
920 {
921 int status;
922 u8 *data;
923
924 data = kmalloc(1, GFP_KERNEL);
925 if (!data) {
926 dev_err(&serial->serial->dev->dev,
927 "%s - out of memory\n", __func__);
928 return -ENOMEM;
929 }
930
931 /* Try to read type 2 */
932 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
933 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
934 if (status)
935 dbg("%s - read 2 status error = %d", __func__, status);
936 else
937 dbg("%s - read 2 data = 0x%x", __func__, *data);
938 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
939 dbg("%s - ROM_TYPE_II", __func__);
940 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
941 goto out;
942 }
943
944 /* Try to read type 3 */
945 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
946 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
947 if (status)
948 dbg("%s - read 3 status error = %d", __func__, status);
949 else
950 dbg("%s - read 2 data = 0x%x", __func__, *data);
951 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
952 dbg("%s - ROM_TYPE_III", __func__);
953 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
954 goto out;
955 }
956
957 dbg("%s - Unknown", __func__);
958 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
959 status = -ENODEV;
960 out:
961 kfree(data);
962 return status;
963 }
964
965 static int bulk_xfer(struct usb_serial *serial, void *buffer,
966 int length, int *num_sent)
967 {
968 int status;
969
970 status = usb_bulk_msg(serial->dev,
971 usb_sndbulkpipe(serial->dev,
972 serial->port[0]->bulk_out_endpointAddress),
973 buffer, length, num_sent, 1000);
974 return status;
975 }
976
977 /* Download given firmware image to the device (IN BOOT MODE) */
978 static int download_code(struct edgeport_serial *serial, __u8 *image,
979 int image_length)
980 {
981 int status = 0;
982 int pos;
983 int transfer;
984 int done;
985
986 /* Transfer firmware image */
987 for (pos = 0; pos < image_length; ) {
988 /* Read the next buffer from file */
989 transfer = image_length - pos;
990 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
991 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
992
993 /* Transfer data */
994 status = bulk_xfer(serial->serial, &image[pos],
995 transfer, &done);
996 if (status)
997 break;
998 /* Advance buffer pointer */
999 pos += done;
1000 }
1001
1002 return status;
1003 }
1004
1005 /* FIXME!!! */
1006 static int config_boot_dev(struct usb_device *dev)
1007 {
1008 return 0;
1009 }
1010
1011 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1012 {
1013 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1014 }
1015
1016 /**
1017 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1018 *
1019 * This routine downloads the main operating code into the TI5052, using the
1020 * boot code already burned into E2PROM or ROM.
1021 */
1022 static int download_fw(struct edgeport_serial *serial)
1023 {
1024 struct device *dev = &serial->serial->dev->dev;
1025 int status = 0;
1026 int start_address;
1027 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1028 struct usb_interface_descriptor *interface;
1029 int download_cur_ver;
1030 int download_new_ver;
1031
1032 /* This routine is entered by both the BOOT mode and the Download mode
1033 * We can determine which code is running by the reading the config
1034 * descriptor and if we have only one bulk pipe it is in boot mode
1035 */
1036 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1037
1038 /* Default to type 2 i2c */
1039 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1040
1041 status = choose_config(serial->serial->dev);
1042 if (status)
1043 return status;
1044
1045 interface = &serial->serial->interface->cur_altsetting->desc;
1046 if (!interface) {
1047 dev_err(dev, "%s - no interface set, error!\n", __func__);
1048 return -ENODEV;
1049 }
1050
1051 /*
1052 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1053 * if we have more than one endpoint we are definitely in download
1054 * mode
1055 */
1056 if (interface->bNumEndpoints > 1)
1057 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1058 else
1059 /* Otherwise we will remain in configuring mode */
1060 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1061
1062 /********************************************************************/
1063 /* Download Mode */
1064 /********************************************************************/
1065 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1066 struct ti_i2c_desc *rom_desc;
1067
1068 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1069
1070 status = check_i2c_image(serial);
1071 if (status) {
1072 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1073 return status;
1074 }
1075
1076 /* Validate Hardware version number
1077 * Read Manufacturing Descriptor from TI Based Edgeport
1078 */
1079 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1080 if (!ti_manuf_desc) {
1081 dev_err(dev, "%s - out of memory.\n", __func__);
1082 return -ENOMEM;
1083 }
1084 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1085 if (status) {
1086 kfree(ti_manuf_desc);
1087 return status;
1088 }
1089
1090 /* Check version number of ION descriptor */
1091 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1092 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1093 __func__, ti_cpu_rev(ti_manuf_desc));
1094 kfree(ti_manuf_desc);
1095 return -EINVAL;
1096 }
1097
1098 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1099 if (!rom_desc) {
1100 dev_err(dev, "%s - out of memory.\n", __func__);
1101 kfree(ti_manuf_desc);
1102 return -ENOMEM;
1103 }
1104
1105 /* Search for type 2 record (firmware record) */
1106 start_address = get_descriptor_addr(serial,
1107 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1108 if (start_address != 0) {
1109 struct ti_i2c_firmware_rec *firmware_version;
1110 u8 *record;
1111
1112 dbg("%s - Found Type FIRMWARE (Type 2) record",
1113 __func__);
1114
1115 firmware_version = kmalloc(sizeof(*firmware_version),
1116 GFP_KERNEL);
1117 if (!firmware_version) {
1118 dev_err(dev, "%s - out of memory.\n", __func__);
1119 kfree(rom_desc);
1120 kfree(ti_manuf_desc);
1121 return -ENOMEM;
1122 }
1123
1124 /* Validate version number
1125 * Read the descriptor data
1126 */
1127 status = read_rom(serial, start_address +
1128 sizeof(struct ti_i2c_desc),
1129 sizeof(struct ti_i2c_firmware_rec),
1130 (__u8 *)firmware_version);
1131 if (status) {
1132 kfree(firmware_version);
1133 kfree(rom_desc);
1134 kfree(ti_manuf_desc);
1135 return status;
1136 }
1137
1138 /* Check version number of download with current
1139 version in I2c */
1140 download_cur_ver = (firmware_version->Ver_Major << 8) +
1141 (firmware_version->Ver_Minor);
1142 download_new_ver = (OperationalMajorVersion << 8) +
1143 (OperationalMinorVersion);
1144
1145 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d",
1146 __func__,
1147 firmware_version->Ver_Major,
1148 firmware_version->Ver_Minor,
1149 OperationalMajorVersion,
1150 OperationalMinorVersion);
1151
1152 /* Check if we have an old version in the I2C and
1153 update if necessary */
1154 if (download_cur_ver < download_new_ver) {
1155 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1156 __func__,
1157 firmware_version->Ver_Major,
1158 firmware_version->Ver_Minor,
1159 OperationalMajorVersion,
1160 OperationalMinorVersion);
1161
1162 record = kmalloc(1, GFP_KERNEL);
1163 if (!record) {
1164 dev_err(dev, "%s - out of memory.\n",
1165 __func__);
1166 kfree(firmware_version);
1167 kfree(rom_desc);
1168 kfree(ti_manuf_desc);
1169 return -ENOMEM;
1170 }
1171 /* In order to update the I2C firmware we must
1172 * change the type 2 record to type 0xF2. This
1173 * will force the UMP to come up in Boot Mode.
1174 * Then while in boot mode, the driver will
1175 * download the latest firmware (padded to
1176 * 15.5k) into the UMP ram. Finally when the
1177 * device comes back up in download mode the
1178 * driver will cause the new firmware to be
1179 * copied from the UMP Ram to I2C and the
1180 * firmware will update the record type from
1181 * 0xf2 to 0x02.
1182 */
1183 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1184
1185 /* Change the I2C Firmware record type to
1186 0xf2 to trigger an update */
1187 status = write_rom(serial, start_address,
1188 sizeof(*record), record);
1189 if (status) {
1190 kfree(record);
1191 kfree(firmware_version);
1192 kfree(rom_desc);
1193 kfree(ti_manuf_desc);
1194 return status;
1195 }
1196
1197 /* verify the write -- must do this in order
1198 * for write to complete before we do the
1199 * hardware reset
1200 */
1201 status = read_rom(serial,
1202 start_address,
1203 sizeof(*record),
1204 record);
1205 if (status) {
1206 kfree(record);
1207 kfree(firmware_version);
1208 kfree(rom_desc);
1209 kfree(ti_manuf_desc);
1210 return status;
1211 }
1212
1213 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1214 dev_err(dev,
1215 "%s - error resetting device\n",
1216 __func__);
1217 kfree(record);
1218 kfree(firmware_version);
1219 kfree(rom_desc);
1220 kfree(ti_manuf_desc);
1221 return -ENODEV;
1222 }
1223
1224 dbg("%s - HARDWARE RESET", __func__);
1225
1226 /* Reset UMP -- Back to BOOT MODE */
1227 status = ti_vsend_sync(serial->serial->dev,
1228 UMPC_HARDWARE_RESET,
1229 0, 0, NULL, 0);
1230
1231 dbg("%s - HARDWARE RESET return %d",
1232 __func__, status);
1233
1234 /* return an error on purpose. */
1235 kfree(record);
1236 kfree(firmware_version);
1237 kfree(rom_desc);
1238 kfree(ti_manuf_desc);
1239 return -ENODEV;
1240 }
1241 kfree(firmware_version);
1242 }
1243 /* Search for type 0xF2 record (firmware blank record) */
1244 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1245 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1246 sizeof(struct ti_i2c_firmware_rec))
1247 __u8 *header;
1248 __u8 *vheader;
1249
1250 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1251 if (!header) {
1252 dev_err(dev, "%s - out of memory.\n", __func__);
1253 kfree(rom_desc);
1254 kfree(ti_manuf_desc);
1255 return -ENOMEM;
1256 }
1257
1258 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1259 if (!vheader) {
1260 dev_err(dev, "%s - out of memory.\n", __func__);
1261 kfree(header);
1262 kfree(rom_desc);
1263 kfree(ti_manuf_desc);
1264 return -ENOMEM;
1265 }
1266
1267 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1268 __func__);
1269
1270 /*
1271 * In order to update the I2C firmware we must change
1272 * the type 2 record to type 0xF2. This will force the
1273 * UMP to come up in Boot Mode. Then while in boot
1274 * mode, the driver will download the latest firmware
1275 * (padded to 15.5k) into the UMP ram. Finally when the
1276 * device comes back up in download mode the driver
1277 * will cause the new firmware to be copied from the
1278 * UMP Ram to I2C and the firmware will update the
1279 * record type from 0xf2 to 0x02.
1280 */
1281 status = build_i2c_fw_hdr(header, dev);
1282 if (status) {
1283 kfree(vheader);
1284 kfree(header);
1285 kfree(rom_desc);
1286 kfree(ti_manuf_desc);
1287 return -EINVAL;
1288 }
1289
1290 /* Update I2C with type 0xf2 record with correct
1291 size and checksum */
1292 status = write_rom(serial,
1293 start_address,
1294 HEADER_SIZE,
1295 header);
1296 if (status) {
1297 kfree(vheader);
1298 kfree(header);
1299 kfree(rom_desc);
1300 kfree(ti_manuf_desc);
1301 return -EINVAL;
1302 }
1303
1304 /* verify the write -- must do this in order for
1305 write to complete before we do the hardware reset */
1306 status = read_rom(serial, start_address,
1307 HEADER_SIZE, vheader);
1308
1309 if (status) {
1310 dbg("%s - can't read header back", __func__);
1311 kfree(vheader);
1312 kfree(header);
1313 kfree(rom_desc);
1314 kfree(ti_manuf_desc);
1315 return status;
1316 }
1317 if (memcmp(vheader, header, HEADER_SIZE)) {
1318 dbg("%s - write download record failed",
1319 __func__);
1320 kfree(vheader);
1321 kfree(header);
1322 kfree(rom_desc);
1323 kfree(ti_manuf_desc);
1324 return -EINVAL;
1325 }
1326
1327 kfree(vheader);
1328 kfree(header);
1329
1330 dbg("%s - Start firmware update", __func__);
1331
1332 /* Tell firmware to copy download image into I2C */
1333 status = ti_vsend_sync(serial->serial->dev,
1334 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1335
1336 dbg("%s - Update complete 0x%x", __func__, status);
1337 if (status) {
1338 dev_err(dev,
1339 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1340 __func__);
1341 kfree(rom_desc);
1342 kfree(ti_manuf_desc);
1343 return status;
1344 }
1345 }
1346
1347 // The device is running the download code
1348 kfree(rom_desc);
1349 kfree(ti_manuf_desc);
1350 return 0;
1351 }
1352
1353 /********************************************************************/
1354 /* Boot Mode */
1355 /********************************************************************/
1356 dbg("%s - RUNNING IN BOOT MODE", __func__);
1357
1358 /* Configure the TI device so we can use the BULK pipes for download */
1359 status = config_boot_dev(serial->serial->dev);
1360 if (status)
1361 return status;
1362
1363 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1364 != USB_VENDOR_ID_ION) {
1365 dbg("%s - VID = 0x%x", __func__,
1366 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1367 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1368 goto stayinbootmode;
1369 }
1370
1371 /* We have an ION device (I2c Must be programmed)
1372 Determine I2C image type */
1373 if (i2c_type_bootmode(serial))
1374 goto stayinbootmode;
1375
1376 /* Check for ION Vendor ID and that the I2C is valid */
1377 if (!check_i2c_image(serial)) {
1378 struct ti_i2c_image_header *header;
1379 int i;
1380 __u8 cs = 0;
1381 __u8 *buffer;
1382 int buffer_size;
1383 int err;
1384 const struct firmware *fw;
1385 const char *fw_name = "edgeport/down3.bin";
1386
1387 /* Validate Hardware version number
1388 * Read Manufacturing Descriptor from TI Based Edgeport
1389 */
1390 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1391 if (!ti_manuf_desc) {
1392 dev_err(dev, "%s - out of memory.\n", __func__);
1393 return -ENOMEM;
1394 }
1395 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1396 if (status) {
1397 kfree(ti_manuf_desc);
1398 goto stayinbootmode;
1399 }
1400
1401 /* Check for version 2 */
1402 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1403 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1404 __func__, ti_cpu_rev(ti_manuf_desc));
1405 kfree(ti_manuf_desc);
1406 goto stayinbootmode;
1407 }
1408
1409 kfree(ti_manuf_desc);
1410
1411 /*
1412 * In order to update the I2C firmware we must change the type
1413 * 2 record to type 0xF2. This will force the UMP to come up
1414 * in Boot Mode. Then while in boot mode, the driver will
1415 * download the latest firmware (padded to 15.5k) into the
1416 * UMP ram. Finally when the device comes back up in download
1417 * mode the driver will cause the new firmware to be copied
1418 * from the UMP Ram to I2C and the firmware will update the
1419 * record type from 0xf2 to 0x02.
1420 *
1421 * Do we really have to copy the whole firmware image,
1422 * or could we do this in place!
1423 */
1424
1425 /* Allocate a 15.5k buffer + 3 byte header */
1426 buffer_size = (((1024 * 16) - 512) +
1427 sizeof(struct ti_i2c_image_header));
1428 buffer = kmalloc(buffer_size, GFP_KERNEL);
1429 if (!buffer) {
1430 dev_err(dev, "%s - out of memory\n", __func__);
1431 return -ENOMEM;
1432 }
1433
1434 /* Initialize the buffer to 0xff (pad the buffer) */
1435 memset(buffer, 0xff, buffer_size);
1436
1437 err = request_firmware(&fw, fw_name, dev);
1438 if (err) {
1439 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1440 fw_name, err);
1441 kfree(buffer);
1442 return err;
1443 }
1444 memcpy(buffer, &fw->data[4], fw->size - 4);
1445 release_firmware(fw);
1446
1447 for (i = sizeof(struct ti_i2c_image_header);
1448 i < buffer_size; i++) {
1449 cs = (__u8)(cs + buffer[i]);
1450 }
1451
1452 header = (struct ti_i2c_image_header *)buffer;
1453
1454 /* update length and checksum after padding */
1455 header->Length = cpu_to_le16((__u16)(buffer_size -
1456 sizeof(struct ti_i2c_image_header)));
1457 header->CheckSum = cs;
1458
1459 /* Download the operational code */
1460 dbg("%s - Downloading operational code image (TI UMP)",
1461 __func__);
1462 status = download_code(serial, buffer, buffer_size);
1463
1464 kfree(buffer);
1465
1466 if (status) {
1467 dbg("%s - Error downloading operational code image",
1468 __func__);
1469 return status;
1470 }
1471
1472 /* Device will reboot */
1473 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1474
1475 dbg("%s - Download successful -- Device rebooting...",
1476 __func__);
1477
1478 /* return an error on purpose */
1479 return -ENODEV;
1480 }
1481
1482 stayinbootmode:
1483 /* Eprom is invalid or blank stay in boot mode */
1484 dbg("%s - STAYING IN BOOT MODE", __func__);
1485 serial->product_info.TiMode = TI_MODE_BOOT;
1486
1487 return 0;
1488 }
1489
1490
1491 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1492 {
1493 int port_number = port->port->number - port->port->serial->minor;
1494 on = !!on; /* 1 or 0 not bitmask */
1495 return send_cmd(port->port->serial->dev,
1496 feature, (__u8)(UMPM_UART1_PORT + port_number),
1497 on, NULL, 0);
1498 }
1499
1500
1501 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1502 {
1503 int status = 0;
1504
1505 dbg("%s - %x", __func__, mcr);
1506
1507 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1508 if (status)
1509 return status;
1510 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1511 if (status)
1512 return status;
1513 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1514 }
1515
1516 /* Convert TI LSR to standard UART flags */
1517 static __u8 map_line_status(__u8 ti_lsr)
1518 {
1519 __u8 lsr = 0;
1520
1521 #define MAP_FLAG(flagUmp, flagUart) \
1522 if (ti_lsr & flagUmp) \
1523 lsr |= flagUart;
1524
1525 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1526 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1527 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1528 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1529 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1530 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1531
1532 #undef MAP_FLAG
1533
1534 return lsr;
1535 }
1536
1537 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1538 {
1539 struct async_icount *icount;
1540 struct tty_struct *tty;
1541
1542 dbg("%s - %02x", __func__, msr);
1543
1544 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1545 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1546 icount = &edge_port->icount;
1547
1548 /* update input line counters */
1549 if (msr & EDGEPORT_MSR_DELTA_CTS)
1550 icount->cts++;
1551 if (msr & EDGEPORT_MSR_DELTA_DSR)
1552 icount->dsr++;
1553 if (msr & EDGEPORT_MSR_DELTA_CD)
1554 icount->dcd++;
1555 if (msr & EDGEPORT_MSR_DELTA_RI)
1556 icount->rng++;
1557 wake_up_interruptible(&edge_port->delta_msr_wait);
1558 }
1559
1560 /* Save the new modem status */
1561 edge_port->shadow_msr = msr & 0xf0;
1562
1563 tty = tty_port_tty_get(&edge_port->port->port);
1564 /* handle CTS flow control */
1565 if (tty && C_CRTSCTS(tty)) {
1566 if (msr & EDGEPORT_MSR_CTS) {
1567 tty->hw_stopped = 0;
1568 tty_wakeup(tty);
1569 } else {
1570 tty->hw_stopped = 1;
1571 }
1572 }
1573 tty_kref_put(tty);
1574 }
1575
1576 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1577 __u8 lsr, __u8 data)
1578 {
1579 struct async_icount *icount;
1580 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1581 LSR_FRM_ERR | LSR_BREAK));
1582 struct tty_struct *tty;
1583
1584 dbg("%s - %02x", __func__, new_lsr);
1585
1586 edge_port->shadow_lsr = lsr;
1587
1588 if (new_lsr & LSR_BREAK)
1589 /*
1590 * Parity and Framing errors only count if they
1591 * occur exclusive of a break being received.
1592 */
1593 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1594
1595 /* Place LSR data byte into Rx buffer */
1596 if (lsr_data) {
1597 tty = tty_port_tty_get(&edge_port->port->port);
1598 if (tty) {
1599 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1600 tty_kref_put(tty);
1601 }
1602 }
1603
1604 /* update input line counters */
1605 icount = &edge_port->icount;
1606 if (new_lsr & LSR_BREAK)
1607 icount->brk++;
1608 if (new_lsr & LSR_OVER_ERR)
1609 icount->overrun++;
1610 if (new_lsr & LSR_PAR_ERR)
1611 icount->parity++;
1612 if (new_lsr & LSR_FRM_ERR)
1613 icount->frame++;
1614 }
1615
1616
1617 static void edge_interrupt_callback(struct urb *urb)
1618 {
1619 struct edgeport_serial *edge_serial = urb->context;
1620 struct usb_serial_port *port;
1621 struct edgeport_port *edge_port;
1622 unsigned char *data = urb->transfer_buffer;
1623 int length = urb->actual_length;
1624 int port_number;
1625 int function;
1626 int retval;
1627 __u8 lsr;
1628 __u8 msr;
1629 int status = urb->status;
1630
1631 dbg("%s", __func__);
1632
1633 switch (status) {
1634 case 0:
1635 /* success */
1636 break;
1637 case -ECONNRESET:
1638 case -ENOENT:
1639 case -ESHUTDOWN:
1640 /* this urb is terminated, clean up */
1641 dbg("%s - urb shutting down with status: %d",
1642 __func__, status);
1643 return;
1644 default:
1645 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1646 "%d\n", __func__, status);
1647 goto exit;
1648 }
1649
1650 if (!length) {
1651 dbg("%s - no data in urb", __func__);
1652 goto exit;
1653 }
1654
1655 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1656 __func__, length, data);
1657
1658 if (length != 2) {
1659 dbg("%s - expecting packet of size 2, got %d",
1660 __func__, length);
1661 goto exit;
1662 }
1663
1664 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1665 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1666 dbg("%s - port_number %d, function %d, info 0x%x",
1667 __func__, port_number, function, data[1]);
1668 port = edge_serial->serial->port[port_number];
1669 edge_port = usb_get_serial_port_data(port);
1670 if (!edge_port) {
1671 dbg("%s - edge_port not found", __func__);
1672 return;
1673 }
1674 switch (function) {
1675 case TIUMP_INTERRUPT_CODE_LSR:
1676 lsr = map_line_status(data[1]);
1677 if (lsr & UMP_UART_LSR_DATA_MASK) {
1678 /* Save the LSR event for bulk read
1679 completion routine */
1680 dbg("%s - LSR Event Port %u LSR Status = %02x",
1681 __func__, port_number, lsr);
1682 edge_port->lsr_event = 1;
1683 edge_port->lsr_mask = lsr;
1684 } else {
1685 dbg("%s - ===== Port %d LSR Status = %02x ======",
1686 __func__, port_number, lsr);
1687 handle_new_lsr(edge_port, 0, lsr, 0);
1688 }
1689 break;
1690
1691 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1692 /* Copy MSR from UMP */
1693 msr = data[1];
1694 dbg("%s - ===== Port %u MSR Status = %02x ======",
1695 __func__, port_number, msr);
1696 handle_new_msr(edge_port, msr);
1697 break;
1698
1699 default:
1700 dev_err(&urb->dev->dev,
1701 "%s - Unknown Interrupt code from UMP %x\n",
1702 __func__, data[1]);
1703 break;
1704
1705 }
1706
1707 exit:
1708 retval = usb_submit_urb(urb, GFP_ATOMIC);
1709 if (retval)
1710 dev_err(&urb->dev->dev,
1711 "%s - usb_submit_urb failed with result %d\n",
1712 __func__, retval);
1713 }
1714
1715 static void edge_bulk_in_callback(struct urb *urb)
1716 {
1717 struct edgeport_port *edge_port = urb->context;
1718 unsigned char *data = urb->transfer_buffer;
1719 struct tty_struct *tty;
1720 int retval = 0;
1721 int port_number;
1722 int status = urb->status;
1723
1724 dbg("%s", __func__);
1725
1726 switch (status) {
1727 case 0:
1728 /* success */
1729 break;
1730 case -ECONNRESET:
1731 case -ENOENT:
1732 case -ESHUTDOWN:
1733 /* this urb is terminated, clean up */
1734 dbg("%s - urb shutting down with status: %d",
1735 __func__, status);
1736 return;
1737 default:
1738 dev_err(&urb->dev->dev,
1739 "%s - nonzero read bulk status received: %d\n",
1740 __func__, status);
1741 }
1742
1743 if (status == -EPIPE)
1744 goto exit;
1745
1746 if (status) {
1747 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1748 return;
1749 }
1750
1751 port_number = edge_port->port->number - edge_port->port->serial->minor;
1752
1753 if (edge_port->lsr_event) {
1754 edge_port->lsr_event = 0;
1755 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1756 __func__, port_number, edge_port->lsr_mask, *data);
1757 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1758 /* Adjust buffer length/pointer */
1759 --urb->actual_length;
1760 ++data;
1761 }
1762
1763 tty = tty_port_tty_get(&edge_port->port->port);
1764 if (tty && urb->actual_length) {
1765 usb_serial_debug_data(debug, &edge_port->port->dev,
1766 __func__, urb->actual_length, data);
1767 if (edge_port->close_pending)
1768 dbg("%s - close pending, dropping data on the floor",
1769 __func__);
1770 else
1771 edge_tty_recv(&edge_port->port->dev, tty, data,
1772 urb->actual_length);
1773 edge_port->icount.rx += urb->actual_length;
1774 }
1775 tty_kref_put(tty);
1776
1777 exit:
1778 /* continue read unless stopped */
1779 spin_lock(&edge_port->ep_lock);
1780 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1781 urb->dev = edge_port->port->serial->dev;
1782 retval = usb_submit_urb(urb, GFP_ATOMIC);
1783 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1784 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1785 }
1786 spin_unlock(&edge_port->ep_lock);
1787 if (retval)
1788 dev_err(&urb->dev->dev,
1789 "%s - usb_submit_urb failed with result %d\n",
1790 __func__, retval);
1791 }
1792
1793 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1794 unsigned char *data, int length)
1795 {
1796 int queued;
1797
1798 queued = tty_insert_flip_string(tty, data, length);
1799 if (queued < length)
1800 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1801 __func__, length - queued);
1802 tty_flip_buffer_push(tty);
1803 }
1804
1805 static void edge_bulk_out_callback(struct urb *urb)
1806 {
1807 struct usb_serial_port *port = urb->context;
1808 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1809 int status = urb->status;
1810 struct tty_struct *tty;
1811
1812 dbg("%s - port %d", __func__, port->number);
1813
1814 edge_port->ep_write_urb_in_use = 0;
1815
1816 switch (status) {
1817 case 0:
1818 /* success */
1819 break;
1820 case -ECONNRESET:
1821 case -ENOENT:
1822 case -ESHUTDOWN:
1823 /* this urb is terminated, clean up */
1824 dbg("%s - urb shutting down with status: %d",
1825 __func__, status);
1826 return;
1827 default:
1828 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1829 "received: %d\n", __func__, status);
1830 }
1831
1832 /* send any buffered data */
1833 tty = tty_port_tty_get(&port->port);
1834 edge_send(tty);
1835 tty_kref_put(tty);
1836 }
1837
1838 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1839 {
1840 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1841 struct edgeport_serial *edge_serial;
1842 struct usb_device *dev;
1843 struct urb *urb;
1844 int port_number;
1845 int status;
1846 u16 open_settings;
1847 u8 transaction_timeout;
1848
1849 dbg("%s - port %d", __func__, port->number);
1850
1851 if (edge_port == NULL)
1852 return -ENODEV;
1853
1854 port_number = port->number - port->serial->minor;
1855 switch (port_number) {
1856 case 0:
1857 edge_port->uart_base = UMPMEM_BASE_UART1;
1858 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1859 break;
1860 case 1:
1861 edge_port->uart_base = UMPMEM_BASE_UART2;
1862 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1863 break;
1864 default:
1865 dev_err(&port->dev, "Unknown port number!!!\n");
1866 return -ENODEV;
1867 }
1868
1869 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1870 __func__, port_number, edge_port->uart_base,
1871 edge_port->dma_address);
1872
1873 dev = port->serial->dev;
1874
1875 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1876 init_waitqueue_head(&edge_port->delta_msr_wait);
1877
1878 /* turn off loopback */
1879 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1880 if (status) {
1881 dev_err(&port->dev,
1882 "%s - cannot send clear loopback command, %d\n",
1883 __func__, status);
1884 return status;
1885 }
1886
1887 /* set up the port settings */
1888 if (tty)
1889 edge_set_termios(tty, port, tty->termios);
1890
1891 /* open up the port */
1892
1893 /* milliseconds to timeout for DMA transfer */
1894 transaction_timeout = 2;
1895
1896 edge_port->ump_read_timeout =
1897 max(20, ((transaction_timeout * 3) / 2));
1898
1899 /* milliseconds to timeout for DMA transfer */
1900 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1901 UMP_PIPE_TRANS_TIMEOUT_ENA |
1902 (transaction_timeout << 2));
1903
1904 dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1905
1906 /* Tell TI to open and start the port */
1907 status = send_cmd(dev, UMPC_OPEN_PORT,
1908 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1909 if (status) {
1910 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1911 __func__, status);
1912 return status;
1913 }
1914
1915 /* Start the DMA? */
1916 status = send_cmd(dev, UMPC_START_PORT,
1917 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1918 if (status) {
1919 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1920 __func__, status);
1921 return status;
1922 }
1923
1924 /* Clear TX and RX buffers in UMP */
1925 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1926 if (status) {
1927 dev_err(&port->dev,
1928 "%s - cannot send clear buffers command, %d\n",
1929 __func__, status);
1930 return status;
1931 }
1932
1933 /* Read Initial MSR */
1934 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1935 (__u16)(UMPM_UART1_PORT + port_number),
1936 &edge_port->shadow_msr, 1);
1937 if (status) {
1938 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1939 __func__, status);
1940 return status;
1941 }
1942
1943 dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1944
1945 /* Set Initial MCR */
1946 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1947 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1948
1949 edge_serial = edge_port->edge_serial;
1950 if (mutex_lock_interruptible(&edge_serial->es_lock))
1951 return -ERESTARTSYS;
1952 if (edge_serial->num_ports_open == 0) {
1953 /* we are the first port to open, post the interrupt urb */
1954 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1955 if (!urb) {
1956 dev_err(&port->dev,
1957 "%s - no interrupt urb present, exiting\n",
1958 __func__);
1959 status = -EINVAL;
1960 goto release_es_lock;
1961 }
1962 urb->complete = edge_interrupt_callback;
1963 urb->context = edge_serial;
1964 urb->dev = dev;
1965 status = usb_submit_urb(urb, GFP_KERNEL);
1966 if (status) {
1967 dev_err(&port->dev,
1968 "%s - usb_submit_urb failed with value %d\n",
1969 __func__, status);
1970 goto release_es_lock;
1971 }
1972 }
1973
1974 /*
1975 * reset the data toggle on the bulk endpoints to work around bug in
1976 * host controllers where things get out of sync some times
1977 */
1978 usb_clear_halt(dev, port->write_urb->pipe);
1979 usb_clear_halt(dev, port->read_urb->pipe);
1980
1981 /* start up our bulk read urb */
1982 urb = port->read_urb;
1983 if (!urb) {
1984 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1985 __func__);
1986 status = -EINVAL;
1987 goto unlink_int_urb;
1988 }
1989 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1990 urb->complete = edge_bulk_in_callback;
1991 urb->context = edge_port;
1992 urb->dev = dev;
1993 status = usb_submit_urb(urb, GFP_KERNEL);
1994 if (status) {
1995 dev_err(&port->dev,
1996 "%s - read bulk usb_submit_urb failed with value %d\n",
1997 __func__, status);
1998 goto unlink_int_urb;
1999 }
2000
2001 ++edge_serial->num_ports_open;
2002
2003 dbg("%s - exited", __func__);
2004
2005 goto release_es_lock;
2006
2007 unlink_int_urb:
2008 if (edge_port->edge_serial->num_ports_open == 0)
2009 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2010 release_es_lock:
2011 mutex_unlock(&edge_serial->es_lock);
2012 return status;
2013 }
2014
2015 static void edge_close(struct usb_serial_port *port)
2016 {
2017 struct edgeport_serial *edge_serial;
2018 struct edgeport_port *edge_port;
2019 int port_number;
2020 int status;
2021
2022 dbg("%s - port %d", __func__, port->number);
2023
2024 edge_serial = usb_get_serial_data(port->serial);
2025 edge_port = usb_get_serial_port_data(port);
2026 if (edge_serial == NULL || edge_port == NULL)
2027 return;
2028
2029 /* The bulkreadcompletion routine will check
2030 * this flag and dump add read data */
2031 edge_port->close_pending = 1;
2032
2033 /* chase the port close and flush */
2034 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2035
2036 usb_kill_urb(port->read_urb);
2037 usb_kill_urb(port->write_urb);
2038 edge_port->ep_write_urb_in_use = 0;
2039
2040 /* assuming we can still talk to the device,
2041 * send a close port command to it */
2042 dbg("%s - send umpc_close_port", __func__);
2043 port_number = port->number - port->serial->minor;
2044 status = send_cmd(port->serial->dev,
2045 UMPC_CLOSE_PORT,
2046 (__u8)(UMPM_UART1_PORT + port_number),
2047 0,
2048 NULL,
2049 0);
2050 mutex_lock(&edge_serial->es_lock);
2051 --edge_port->edge_serial->num_ports_open;
2052 if (edge_port->edge_serial->num_ports_open <= 0) {
2053 /* last port is now closed, let's shut down our interrupt urb */
2054 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2055 edge_port->edge_serial->num_ports_open = 0;
2056 }
2057 mutex_unlock(&edge_serial->es_lock);
2058 edge_port->close_pending = 0;
2059
2060 dbg("%s - exited", __func__);
2061 }
2062
2063 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2064 const unsigned char *data, int count)
2065 {
2066 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2067
2068 dbg("%s - port %d", __func__, port->number);
2069
2070 if (count == 0) {
2071 dbg("%s - write request of 0 bytes", __func__);
2072 return 0;
2073 }
2074
2075 if (edge_port == NULL)
2076 return -ENODEV;
2077 if (edge_port->close_pending == 1)
2078 return -ENODEV;
2079
2080 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2081 &edge_port->ep_lock);
2082 edge_send(tty);
2083
2084 return count;
2085 }
2086
2087 static void edge_send(struct tty_struct *tty)
2088 {
2089 struct usb_serial_port *port = tty->driver_data;
2090 int count, result;
2091 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2092 unsigned long flags;
2093
2094
2095 dbg("%s - port %d", __func__, port->number);
2096
2097 spin_lock_irqsave(&edge_port->ep_lock, flags);
2098
2099 if (edge_port->ep_write_urb_in_use) {
2100 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2101 return;
2102 }
2103
2104 count = kfifo_out(&edge_port->write_fifo,
2105 port->write_urb->transfer_buffer,
2106 port->bulk_out_size);
2107
2108 if (count == 0) {
2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2110 return;
2111 }
2112
2113 edge_port->ep_write_urb_in_use = 1;
2114
2115 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2116
2117 usb_serial_debug_data(debug, &port->dev, __func__, count,
2118 port->write_urb->transfer_buffer);
2119
2120 /* set up our urb */
2121 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
2122 usb_sndbulkpipe(port->serial->dev,
2123 port->bulk_out_endpointAddress),
2124 port->write_urb->transfer_buffer, count,
2125 edge_bulk_out_callback,
2126 port);
2127
2128 /* send the data out the bulk port */
2129 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2130 if (result) {
2131 dev_err(&port->dev,
2132 "%s - failed submitting write urb, error %d\n",
2133 __func__, result);
2134 edge_port->ep_write_urb_in_use = 0;
2135 /* TODO: reschedule edge_send */
2136 } else
2137 edge_port->icount.tx += count;
2138
2139 /* wakeup any process waiting for writes to complete */
2140 /* there is now more room in the buffer for new writes */
2141 if (tty)
2142 tty_wakeup(tty);
2143 }
2144
2145 static int edge_write_room(struct tty_struct *tty)
2146 {
2147 struct usb_serial_port *port = tty->driver_data;
2148 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2149 int room = 0;
2150 unsigned long flags;
2151
2152 dbg("%s - port %d", __func__, port->number);
2153
2154 if (edge_port == NULL)
2155 return 0;
2156 if (edge_port->close_pending == 1)
2157 return 0;
2158
2159 spin_lock_irqsave(&edge_port->ep_lock, flags);
2160 room = kfifo_avail(&edge_port->write_fifo);
2161 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2162
2163 dbg("%s - returns %d", __func__, room);
2164 return room;
2165 }
2166
2167 static int edge_chars_in_buffer(struct tty_struct *tty)
2168 {
2169 struct usb_serial_port *port = tty->driver_data;
2170 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2171 int chars = 0;
2172 unsigned long flags;
2173
2174 dbg("%s - port %d", __func__, port->number);
2175
2176 if (edge_port == NULL)
2177 return 0;
2178 if (edge_port->close_pending == 1)
2179 return 0;
2180
2181 spin_lock_irqsave(&edge_port->ep_lock, flags);
2182 chars = kfifo_len(&edge_port->write_fifo);
2183 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2184
2185 dbg("%s - returns %d", __func__, chars);
2186 return chars;
2187 }
2188
2189 static void edge_throttle(struct tty_struct *tty)
2190 {
2191 struct usb_serial_port *port = tty->driver_data;
2192 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2193 int status;
2194
2195 dbg("%s - port %d", __func__, port->number);
2196
2197 if (edge_port == NULL)
2198 return;
2199
2200 /* if we are implementing XON/XOFF, send the stop character */
2201 if (I_IXOFF(tty)) {
2202 unsigned char stop_char = STOP_CHAR(tty);
2203 status = edge_write(tty, port, &stop_char, 1);
2204 if (status <= 0) {
2205 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2206 }
2207 }
2208
2209 /* if we are implementing RTS/CTS, stop reads */
2210 /* and the Edgeport will clear the RTS line */
2211 if (C_CRTSCTS(tty))
2212 stop_read(edge_port);
2213
2214 }
2215
2216 static void edge_unthrottle(struct tty_struct *tty)
2217 {
2218 struct usb_serial_port *port = tty->driver_data;
2219 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2220 int status;
2221
2222 dbg("%s - port %d", __func__, port->number);
2223
2224 if (edge_port == NULL)
2225 return;
2226
2227 /* if we are implementing XON/XOFF, send the start character */
2228 if (I_IXOFF(tty)) {
2229 unsigned char start_char = START_CHAR(tty);
2230 status = edge_write(tty, port, &start_char, 1);
2231 if (status <= 0) {
2232 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2233 }
2234 }
2235 /* if we are implementing RTS/CTS, restart reads */
2236 /* are the Edgeport will assert the RTS line */
2237 if (C_CRTSCTS(tty)) {
2238 status = restart_read(edge_port);
2239 if (status)
2240 dev_err(&port->dev,
2241 "%s - read bulk usb_submit_urb failed: %d\n",
2242 __func__, status);
2243 }
2244
2245 }
2246
2247 static void stop_read(struct edgeport_port *edge_port)
2248 {
2249 unsigned long flags;
2250
2251 spin_lock_irqsave(&edge_port->ep_lock, flags);
2252
2253 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2254 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2255 edge_port->shadow_mcr &= ~MCR_RTS;
2256
2257 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2258 }
2259
2260 static int restart_read(struct edgeport_port *edge_port)
2261 {
2262 struct urb *urb;
2263 int status = 0;
2264 unsigned long flags;
2265
2266 spin_lock_irqsave(&edge_port->ep_lock, flags);
2267
2268 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2269 urb = edge_port->port->read_urb;
2270 urb->complete = edge_bulk_in_callback;
2271 urb->context = edge_port;
2272 urb->dev = edge_port->port->serial->dev;
2273 status = usb_submit_urb(urb, GFP_ATOMIC);
2274 }
2275 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2276 edge_port->shadow_mcr |= MCR_RTS;
2277
2278 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2279
2280 return status;
2281 }
2282
2283 static void change_port_settings(struct tty_struct *tty,
2284 struct edgeport_port *edge_port, struct ktermios *old_termios)
2285 {
2286 struct ump_uart_config *config;
2287 int baud;
2288 unsigned cflag;
2289 int status;
2290 int port_number = edge_port->port->number -
2291 edge_port->port->serial->minor;
2292
2293 dbg("%s - port %d", __func__, edge_port->port->number);
2294
2295 config = kmalloc (sizeof (*config), GFP_KERNEL);
2296 if (!config) {
2297 *tty->termios = *old_termios;
2298 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2299 __func__);
2300 return;
2301 }
2302
2303 cflag = tty->termios->c_cflag;
2304
2305 config->wFlags = 0;
2306
2307 /* These flags must be set */
2308 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2309 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2310 config->bUartMode = (__u8)(edge_port->bUartMode);
2311
2312 switch (cflag & CSIZE) {
2313 case CS5:
2314 config->bDataBits = UMP_UART_CHAR5BITS;
2315 dbg("%s - data bits = 5", __func__);
2316 break;
2317 case CS6:
2318 config->bDataBits = UMP_UART_CHAR6BITS;
2319 dbg("%s - data bits = 6", __func__);
2320 break;
2321 case CS7:
2322 config->bDataBits = UMP_UART_CHAR7BITS;
2323 dbg("%s - data bits = 7", __func__);
2324 break;
2325 default:
2326 case CS8:
2327 config->bDataBits = UMP_UART_CHAR8BITS;
2328 dbg("%s - data bits = 8", __func__);
2329 break;
2330 }
2331
2332 if (cflag & PARENB) {
2333 if (cflag & PARODD) {
2334 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2335 config->bParity = UMP_UART_ODDPARITY;
2336 dbg("%s - parity = odd", __func__);
2337 } else {
2338 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2339 config->bParity = UMP_UART_EVENPARITY;
2340 dbg("%s - parity = even", __func__);
2341 }
2342 } else {
2343 config->bParity = UMP_UART_NOPARITY;
2344 dbg("%s - parity = none", __func__);
2345 }
2346
2347 if (cflag & CSTOPB) {
2348 config->bStopBits = UMP_UART_STOPBIT2;
2349 dbg("%s - stop bits = 2", __func__);
2350 } else {
2351 config->bStopBits = UMP_UART_STOPBIT1;
2352 dbg("%s - stop bits = 1", __func__);
2353 }
2354
2355 /* figure out the flow control settings */
2356 if (cflag & CRTSCTS) {
2357 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2358 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2359 dbg("%s - RTS/CTS is enabled", __func__);
2360 } else {
2361 dbg("%s - RTS/CTS is disabled", __func__);
2362 tty->hw_stopped = 0;
2363 restart_read(edge_port);
2364 }
2365
2366 /* if we are implementing XON/XOFF, set the start and stop
2367 character in the device */
2368 config->cXon = START_CHAR(tty);
2369 config->cXoff = STOP_CHAR(tty);
2370
2371 /* if we are implementing INBOUND XON/XOFF */
2372 if (I_IXOFF(tty)) {
2373 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2374 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2375 __func__, config->cXon, config->cXoff);
2376 } else
2377 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2378
2379 /* if we are implementing OUTBOUND XON/XOFF */
2380 if (I_IXON(tty)) {
2381 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2382 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2383 __func__, config->cXon, config->cXoff);
2384 } else
2385 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2386
2387 tty->termios->c_cflag &= ~CMSPAR;
2388
2389 /* Round the baud rate */
2390 baud = tty_get_baud_rate(tty);
2391 if (!baud) {
2392 /* pick a default, any default... */
2393 baud = 9600;
2394 } else
2395 tty_encode_baud_rate(tty, baud, baud);
2396
2397 edge_port->baud_rate = baud;
2398 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2399
2400 /* FIXME: Recompute actual baud from divisor here */
2401
2402 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2403 config->wBaudRate);
2404
2405 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2406 dbg("wFlags: 0x%x", config->wFlags);
2407 dbg("bDataBits: %d", config->bDataBits);
2408 dbg("bParity: %d", config->bParity);
2409 dbg("bStopBits: %d", config->bStopBits);
2410 dbg("cXon: %d", config->cXon);
2411 dbg("cXoff: %d", config->cXoff);
2412 dbg("bUartMode: %d", config->bUartMode);
2413
2414 /* move the word values into big endian mode */
2415 cpu_to_be16s(&config->wFlags);
2416 cpu_to_be16s(&config->wBaudRate);
2417
2418 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2419 (__u8)(UMPM_UART1_PORT + port_number),
2420 0, (__u8 *)config, sizeof(*config));
2421 if (status)
2422 dbg("%s - error %d when trying to write config to device",
2423 __func__, status);
2424 kfree(config);
2425 }
2426
2427 static void edge_set_termios(struct tty_struct *tty,
2428 struct usb_serial_port *port, struct ktermios *old_termios)
2429 {
2430 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2431 unsigned int cflag;
2432
2433 cflag = tty->termios->c_cflag;
2434
2435 dbg("%s - clfag %08x iflag %08x", __func__,
2436 tty->termios->c_cflag, tty->termios->c_iflag);
2437 dbg("%s - old clfag %08x old iflag %08x", __func__,
2438 old_termios->c_cflag, old_termios->c_iflag);
2439 dbg("%s - port %d", __func__, port->number);
2440
2441 if (edge_port == NULL)
2442 return;
2443 /* change the port settings to the new ones specified */
2444 change_port_settings(tty, edge_port, old_termios);
2445 }
2446
2447 static int edge_tiocmset(struct tty_struct *tty,
2448 unsigned int set, unsigned int clear)
2449 {
2450 struct usb_serial_port *port = tty->driver_data;
2451 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2452 unsigned int mcr;
2453 unsigned long flags;
2454
2455 dbg("%s - port %d", __func__, port->number);
2456
2457 spin_lock_irqsave(&edge_port->ep_lock, flags);
2458 mcr = edge_port->shadow_mcr;
2459 if (set & TIOCM_RTS)
2460 mcr |= MCR_RTS;
2461 if (set & TIOCM_DTR)
2462 mcr |= MCR_DTR;
2463 if (set & TIOCM_LOOP)
2464 mcr |= MCR_LOOPBACK;
2465
2466 if (clear & TIOCM_RTS)
2467 mcr &= ~MCR_RTS;
2468 if (clear & TIOCM_DTR)
2469 mcr &= ~MCR_DTR;
2470 if (clear & TIOCM_LOOP)
2471 mcr &= ~MCR_LOOPBACK;
2472
2473 edge_port->shadow_mcr = mcr;
2474 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2475
2476 restore_mcr(edge_port, mcr);
2477 return 0;
2478 }
2479
2480 static int edge_tiocmget(struct tty_struct *tty)
2481 {
2482 struct usb_serial_port *port = tty->driver_data;
2483 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2484 unsigned int result = 0;
2485 unsigned int msr;
2486 unsigned int mcr;
2487 unsigned long flags;
2488
2489 dbg("%s - port %d", __func__, port->number);
2490
2491 spin_lock_irqsave(&edge_port->ep_lock, flags);
2492
2493 msr = edge_port->shadow_msr;
2494 mcr = edge_port->shadow_mcr;
2495 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2496 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2497 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2498 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2499 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2500 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2501
2502
2503 dbg("%s -- %x", __func__, result);
2504 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2505
2506 return result;
2507 }
2508
2509 static int edge_get_icount(struct tty_struct *tty,
2510 struct serial_icounter_struct *icount)
2511 {
2512 struct usb_serial_port *port = tty->driver_data;
2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2514 struct async_icount *ic = &edge_port->icount;
2515
2516 icount->cts = ic->cts;
2517 icount->dsr = ic->dsr;
2518 icount->rng = ic->rng;
2519 icount->dcd = ic->dcd;
2520 icount->tx = ic->tx;
2521 icount->rx = ic->rx;
2522 icount->frame = ic->frame;
2523 icount->parity = ic->parity;
2524 icount->overrun = ic->overrun;
2525 icount->brk = ic->brk;
2526 icount->buf_overrun = ic->buf_overrun;
2527 return 0;
2528 }
2529
2530 static int get_serial_info(struct edgeport_port *edge_port,
2531 struct serial_struct __user *retinfo)
2532 {
2533 struct serial_struct tmp;
2534
2535 if (!retinfo)
2536 return -EFAULT;
2537
2538 memset(&tmp, 0, sizeof(tmp));
2539
2540 tmp.type = PORT_16550A;
2541 tmp.line = edge_port->port->serial->minor;
2542 tmp.port = edge_port->port->number;
2543 tmp.irq = 0;
2544 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2545 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2546 tmp.baud_base = 9600;
2547 tmp.close_delay = 5*HZ;
2548 tmp.closing_wait = closing_wait;
2549
2550 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2551 return -EFAULT;
2552 return 0;
2553 }
2554
2555 static int edge_ioctl(struct tty_struct *tty,
2556 unsigned int cmd, unsigned long arg)
2557 {
2558 struct usb_serial_port *port = tty->driver_data;
2559 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2560 struct async_icount cnow;
2561 struct async_icount cprev;
2562
2563 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2564
2565 switch (cmd) {
2566 case TIOCGSERIAL:
2567 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2568 return get_serial_info(edge_port,
2569 (struct serial_struct __user *) arg);
2570 case TIOCMIWAIT:
2571 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2572 cprev = edge_port->icount;
2573 while (1) {
2574 interruptible_sleep_on(&edge_port->delta_msr_wait);
2575 /* see if a signal did it */
2576 if (signal_pending(current))
2577 return -ERESTARTSYS;
2578 cnow = edge_port->icount;
2579 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2580 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2581 return -EIO; /* no change => error */
2582 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2583 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2584 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2585 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2586 return 0;
2587 }
2588 cprev = cnow;
2589 }
2590 /* not reached */
2591 break;
2592 }
2593 return -ENOIOCTLCMD;
2594 }
2595
2596 static void edge_break(struct tty_struct *tty, int break_state)
2597 {
2598 struct usb_serial_port *port = tty->driver_data;
2599 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2600 int status;
2601 int bv = 0; /* Off */
2602
2603 dbg("%s - state = %d", __func__, break_state);
2604
2605 /* chase the port close */
2606 chase_port(edge_port, 0, 0);
2607
2608 if (break_state == -1)
2609 bv = 1; /* On */
2610 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2611 if (status)
2612 dbg("%s - error %d sending break set/clear command.",
2613 __func__, status);
2614 }
2615
2616 static int edge_startup(struct usb_serial *serial)
2617 {
2618 struct edgeport_serial *edge_serial;
2619 struct edgeport_port *edge_port;
2620 struct usb_device *dev;
2621 int status;
2622 int i;
2623
2624 dev = serial->dev;
2625
2626 /* create our private serial structure */
2627 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2628 if (edge_serial == NULL) {
2629 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2630 return -ENOMEM;
2631 }
2632 mutex_init(&edge_serial->es_lock);
2633 edge_serial->serial = serial;
2634 usb_set_serial_data(serial, edge_serial);
2635
2636 status = download_fw(edge_serial);
2637 if (status) {
2638 kfree(edge_serial);
2639 return status;
2640 }
2641
2642 /* set up our port private structures */
2643 for (i = 0; i < serial->num_ports; ++i) {
2644 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2645 if (edge_port == NULL) {
2646 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2647 __func__);
2648 goto cleanup;
2649 }
2650 spin_lock_init(&edge_port->ep_lock);
2651 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2652 GFP_KERNEL)) {
2653 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2654 __func__);
2655 kfree(edge_port);
2656 goto cleanup;
2657 }
2658 edge_port->port = serial->port[i];
2659 edge_port->edge_serial = edge_serial;
2660 usb_set_serial_port_data(serial->port[i], edge_port);
2661 edge_port->bUartMode = default_uart_mode;
2662 }
2663
2664 return 0;
2665
2666 cleanup:
2667 for (--i; i >= 0; --i) {
2668 edge_port = usb_get_serial_port_data(serial->port[i]);
2669 kfifo_free(&edge_port->write_fifo);
2670 kfree(edge_port);
2671 usb_set_serial_port_data(serial->port[i], NULL);
2672 }
2673 kfree(edge_serial);
2674 usb_set_serial_data(serial, NULL);
2675 return -ENOMEM;
2676 }
2677
2678 static void edge_disconnect(struct usb_serial *serial)
2679 {
2680 int i;
2681 struct edgeport_port *edge_port;
2682
2683 dbg("%s", __func__);
2684
2685 for (i = 0; i < serial->num_ports; ++i) {
2686 edge_port = usb_get_serial_port_data(serial->port[i]);
2687 edge_remove_sysfs_attrs(edge_port->port);
2688 }
2689 }
2690
2691 static void edge_release(struct usb_serial *serial)
2692 {
2693 int i;
2694 struct edgeport_port *edge_port;
2695
2696 dbg("%s", __func__);
2697
2698 for (i = 0; i < serial->num_ports; ++i) {
2699 edge_port = usb_get_serial_port_data(serial->port[i]);
2700 kfifo_free(&edge_port->write_fifo);
2701 kfree(edge_port);
2702 }
2703 kfree(usb_get_serial_data(serial));
2704 }
2705
2706
2707 /* Sysfs Attributes */
2708
2709 static ssize_t show_uart_mode(struct device *dev,
2710 struct device_attribute *attr, char *buf)
2711 {
2712 struct usb_serial_port *port = to_usb_serial_port(dev);
2713 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2714
2715 return sprintf(buf, "%d\n", edge_port->bUartMode);
2716 }
2717
2718 static ssize_t store_uart_mode(struct device *dev,
2719 struct device_attribute *attr, const char *valbuf, size_t count)
2720 {
2721 struct usb_serial_port *port = to_usb_serial_port(dev);
2722 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2723 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2724
2725 dbg("%s: setting uart_mode = %d", __func__, v);
2726
2727 if (v < 256)
2728 edge_port->bUartMode = v;
2729 else
2730 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2731
2732 return count;
2733 }
2734
2735 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2736 store_uart_mode);
2737
2738 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2739 {
2740 return device_create_file(&port->dev, &dev_attr_uart_mode);
2741 }
2742
2743 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2744 {
2745 device_remove_file(&port->dev, &dev_attr_uart_mode);
2746 return 0;
2747 }
2748
2749
2750 static struct usb_serial_driver edgeport_1port_device = {
2751 .driver = {
2752 .owner = THIS_MODULE,
2753 .name = "edgeport_ti_1",
2754 },
2755 .description = "Edgeport TI 1 port adapter",
2756 .usb_driver = &io_driver,
2757 .id_table = edgeport_1port_id_table,
2758 .num_ports = 1,
2759 .open = edge_open,
2760 .close = edge_close,
2761 .throttle = edge_throttle,
2762 .unthrottle = edge_unthrottle,
2763 .attach = edge_startup,
2764 .disconnect = edge_disconnect,
2765 .release = edge_release,
2766 .port_probe = edge_create_sysfs_attrs,
2767 .ioctl = edge_ioctl,
2768 .set_termios = edge_set_termios,
2769 .tiocmget = edge_tiocmget,
2770 .tiocmset = edge_tiocmset,
2771 .get_icount = edge_get_icount,
2772 .write = edge_write,
2773 .write_room = edge_write_room,
2774 .chars_in_buffer = edge_chars_in_buffer,
2775 .break_ctl = edge_break,
2776 .read_int_callback = edge_interrupt_callback,
2777 .read_bulk_callback = edge_bulk_in_callback,
2778 .write_bulk_callback = edge_bulk_out_callback,
2779 };
2780
2781 static struct usb_serial_driver edgeport_2port_device = {
2782 .driver = {
2783 .owner = THIS_MODULE,
2784 .name = "edgeport_ti_2",
2785 },
2786 .description = "Edgeport TI 2 port adapter",
2787 .usb_driver = &io_driver,
2788 .id_table = edgeport_2port_id_table,
2789 .num_ports = 2,
2790 .open = edge_open,
2791 .close = edge_close,
2792 .throttle = edge_throttle,
2793 .unthrottle = edge_unthrottle,
2794 .attach = edge_startup,
2795 .disconnect = edge_disconnect,
2796 .release = edge_release,
2797 .port_probe = edge_create_sysfs_attrs,
2798 .ioctl = edge_ioctl,
2799 .set_termios = edge_set_termios,
2800 .tiocmget = edge_tiocmget,
2801 .tiocmset = edge_tiocmset,
2802 .write = edge_write,
2803 .write_room = edge_write_room,
2804 .chars_in_buffer = edge_chars_in_buffer,
2805 .break_ctl = edge_break,
2806 .read_int_callback = edge_interrupt_callback,
2807 .read_bulk_callback = edge_bulk_in_callback,
2808 .write_bulk_callback = edge_bulk_out_callback,
2809 };
2810
2811
2812 static int __init edgeport_init(void)
2813 {
2814 int retval;
2815 retval = usb_serial_register(&edgeport_1port_device);
2816 if (retval)
2817 goto failed_1port_device_register;
2818 retval = usb_serial_register(&edgeport_2port_device);
2819 if (retval)
2820 goto failed_2port_device_register;
2821 retval = usb_register(&io_driver);
2822 if (retval)
2823 goto failed_usb_register;
2824 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2825 DRIVER_DESC "\n");
2826 return 0;
2827 failed_usb_register:
2828 usb_serial_deregister(&edgeport_2port_device);
2829 failed_2port_device_register:
2830 usb_serial_deregister(&edgeport_1port_device);
2831 failed_1port_device_register:
2832 return retval;
2833 }
2834
2835 static void __exit edgeport_exit(void)
2836 {
2837 usb_deregister(&io_driver);
2838 usb_serial_deregister(&edgeport_1port_device);
2839 usb_serial_deregister(&edgeport_2port_device);
2840 }
2841
2842 module_init(edgeport_init);
2843 module_exit(edgeport_exit);
2844
2845 /* Module information */
2846 MODULE_AUTHOR(DRIVER_AUTHOR);
2847 MODULE_DESCRIPTION(DRIVER_DESC);
2848 MODULE_LICENSE("GPL");
2849 MODULE_FIRMWARE("edgeport/down3.bin");
2850
2851 module_param(debug, bool, S_IRUGO | S_IWUSR);
2852 MODULE_PARM_DESC(debug, "Debug enabled or not");
2853
2854 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2855 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2856
2857 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2858 MODULE_PARM_DESC(ignore_cpu_rev,
2859 "Ignore the cpu revision when connecting to a device");
2860
2861 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2862 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree