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OMAP3: PM: decouple PER and CORE context save and restore
[linux-ginger.git] / drivers / usb / serial / io_ti.c
blobd4cc0f7af400d0133653e4e0515b25a131e2a37f
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/ioctl.h>
40 #include <linux/firmware.h>
41 #include <linux/uaccess.h>
42 #include <linux/usb.h>
43 #include <linux/usb/serial.h>
44
45 #include "io_16654.h"
46 #include "io_usbvend.h"
47 #include "io_ti.h"
48
49 /*
50 * Version Information
51 */
52 #define DRIVER_VERSION "v0.7mode043006"
53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
54 #define DRIVER_DESC "Edgeport USB Serial Driver"
55
56 #define EPROM_PAGE_SIZE 64
57
58
59 struct edgeport_uart_buf_desc {
60 __u32 count; /* Number of bytes currently in buffer */
61 };
62
63 /* different hardware types */
64 #define HARDWARE_TYPE_930 0
65 #define HARDWARE_TYPE_TIUMP 1
66
67 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
68 #define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
69 #define TI_MODE_BOOT 1 /* Staying in boot mode */
70 #define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
71 #define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
72 transitioning to download mode */
73
74 /* read urb state */
75 #define EDGE_READ_URB_RUNNING 0
76 #define EDGE_READ_URB_STOPPING 1
77 #define EDGE_READ_URB_STOPPED 2
78
79 #define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
80
81 #define EDGE_OUT_BUF_SIZE 1024
82
83
84 /* Product information read from the Edgeport */
85 struct product_info {
86 int TiMode; /* Current TI Mode */
87 __u8 hardware_type; /* Type of hardware */
88 } __attribute__((packed));
89
90 /* circular buffer */
91 struct edge_buf {
92 unsigned int buf_size;
93 char *buf_buf;
94 char *buf_get;
95 char *buf_put;
96 };
97
98 struct edgeport_port {
99 __u16 uart_base;
100 __u16 dma_address;
101 __u8 shadow_msr;
102 __u8 shadow_mcr;
103 __u8 shadow_lsr;
104 __u8 lsr_mask;
105 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
106 wait without data before completing
107 a read short */
108 int baud_rate;
109 int close_pending;
110 int lsr_event;
111 struct edgeport_uart_buf_desc tx;
112 struct async_icount icount;
113 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
114 waiting for msr change to
115 happen */
116 struct edgeport_serial *edge_serial;
117 struct usb_serial_port *port;
118 __u8 bUartMode; /* Port type, 0: RS232, etc. */
119 spinlock_t ep_lock;
120 int ep_read_urb_state;
121 int ep_write_urb_in_use;
122 struct edge_buf *ep_out_buf;
123 };
124
125 struct edgeport_serial {
126 struct product_info product_info;
127 u8 TI_I2C_Type; /* Type of I2C in UMP */
128 u8 TiReadI2C; /* Set to TRUE if we have read the
129 I2c in Boot Mode */
130 struct mutex es_lock;
131 int num_ports_open;
132 struct usb_serial *serial;
133 };
134
135
136 /* Devices that this driver supports */
137 static struct usb_device_id edgeport_1port_id_table [] = {
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
154 { }
155 };
156
157 static struct usb_device_id edgeport_2port_id_table [] = {
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
170 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
176 { }
177 };
178
179 /* Devices that this driver supports */
180 static struct usb_device_id id_table_combined [] = {
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
209 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
210 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
211 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
212 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
213 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
214 { }
215 };
216
217 MODULE_DEVICE_TABLE(usb, id_table_combined);
218
219 static struct usb_driver io_driver = {
220 .name = "io_ti",
221 .probe = usb_serial_probe,
222 .disconnect = usb_serial_disconnect,
223 .id_table = id_table_combined,
224 .no_dynamic_id = 1,
225 };
226
227
228 static unsigned char OperationalMajorVersion;
229 static unsigned char OperationalMinorVersion;
230 static unsigned short OperationalBuildNumber;
231
232 static int debug;
233
234 static int closing_wait = EDGE_CLOSING_WAIT;
235 static int ignore_cpu_rev;
236 static int default_uart_mode; /* RS232 */
237
238 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
239 unsigned char *data, int length);
240
241 static void stop_read(struct edgeport_port *edge_port);
242 static int restart_read(struct edgeport_port *edge_port);
243
244 static void edge_set_termios(struct tty_struct *tty,
245 struct usb_serial_port *port, struct ktermios *old_termios);
246 static void edge_send(struct tty_struct *tty);
247
248 /* sysfs attributes */
249 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
250 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
251
252 /* circular buffer */
253 static struct edge_buf *edge_buf_alloc(unsigned int size);
254 static void edge_buf_free(struct edge_buf *eb);
255 static void edge_buf_clear(struct edge_buf *eb);
256 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
257 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
258 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
259 unsigned int count);
260 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
261 unsigned int count);
262
263
264 static int ti_vread_sync(struct usb_device *dev, __u8 request,
265 __u16 value, __u16 index, u8 *data, int size)
266 {
267 int status;
268
269 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
270 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
271 value, index, data, size, 1000);
272 if (status < 0)
273 return status;
274 if (status != size) {
275 dbg("%s - wanted to write %d, but only wrote %d",
276 __func__, size, status);
277 return -ECOMM;
278 }
279 return 0;
280 }
281
282 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
283 __u16 value, __u16 index, u8 *data, int size)
284 {
285 int status;
286
287 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
288 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
289 value, index, data, size, 1000);
290 if (status < 0)
291 return status;
292 if (status != size) {
293 dbg("%s - wanted to write %d, but only wrote %d",
294 __func__, size, status);
295 return -ECOMM;
296 }
297 return 0;
298 }
299
300 static int send_cmd(struct usb_device *dev, __u8 command,
301 __u8 moduleid, __u16 value, u8 *data,
302 int size)
303 {
304 return ti_vsend_sync(dev, command, value, moduleid, data, size);
305 }
306
307 /* clear tx/rx buffers and fifo in TI UMP */
308 static int purge_port(struct usb_serial_port *port, __u16 mask)
309 {
310 int port_number = port->number - port->serial->minor;
311
312 dbg("%s - port %d, mask %x", __func__, port_number, mask);
313
314 return send_cmd(port->serial->dev,
315 UMPC_PURGE_PORT,
316 (__u8)(UMPM_UART1_PORT + port_number),
317 mask,
318 NULL,
319 0);
320 }
321
322 /**
323 * read_download_mem - Read edgeport memory from TI chip
324 * @dev: usb device pointer
325 * @start_address: Device CPU address at which to read
326 * @length: Length of above data
327 * @address_type: Can read both XDATA and I2C
328 * @buffer: pointer to input data buffer
329 */
330 static int read_download_mem(struct usb_device *dev, int start_address,
331 int length, __u8 address_type, __u8 *buffer)
332 {
333 int status = 0;
334 __u8 read_length;
335 __be16 be_start_address;
336
337 dbg("%s - @ %x for %d", __func__, start_address, length);
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 dbg("%s - @ %x for %d", __func__,
350 start_address, read_length);
351 }
352 be_start_address = cpu_to_be16(start_address);
353 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
354 (__u16)address_type,
355 (__force __u16)be_start_address,
356 buffer, read_length);
357
358 if (status) {
359 dbg("%s - ERROR %x", __func__, status);
360 return status;
361 }
362
363 if (read_length > 1)
364 usb_serial_debug_data(debug, &dev->dev, __func__,
365 read_length, buffer);
366
367 /* Update pointers/length */
368 start_address += read_length;
369 buffer += read_length;
370 length -= read_length;
371 }
372
373 return status;
374 }
375
376 static int read_ram(struct usb_device *dev, int start_address,
377 int length, __u8 *buffer)
378 {
379 return read_download_mem(dev, start_address, length,
380 DTK_ADDR_SPACE_XDATA, buffer);
381 }
382
383 /* Read edgeport memory to a given block */
384 static int read_boot_mem(struct edgeport_serial *serial,
385 int start_address, int length, __u8 *buffer)
386 {
387 int status = 0;
388 int i;
389
390 for (i = 0; i < length; i++) {
391 status = ti_vread_sync(serial->serial->dev,
392 UMPC_MEMORY_READ, serial->TI_I2C_Type,
393 (__u16)(start_address+i), &buffer[i], 0x01);
394 if (status) {
395 dbg("%s - ERROR %x", __func__, status);
396 return status;
397 }
398 }
399
400 dbg("%s - start_address = %x, length = %d",
401 __func__, start_address, length);
402 usb_serial_debug_data(debug, &serial->serial->dev->dev,
403 __func__, length, buffer);
404
405 serial->TiReadI2C = 1;
406
407 return status;
408 }
409
410 /* Write given block to TI EPROM memory */
411 static int write_boot_mem(struct edgeport_serial *serial,
412 int start_address, int length, __u8 *buffer)
413 {
414 int status = 0;
415 int i;
416 __u8 temp;
417
418 /* Must do a read before write */
419 if (!serial->TiReadI2C) {
420 status = read_boot_mem(serial, 0, 1, &temp);
421 if (status)
422 return status;
423 }
424
425 for (i = 0; i < length; ++i) {
426 status = ti_vsend_sync(serial->serial->dev,
427 UMPC_MEMORY_WRITE, buffer[i],
428 (__u16)(i + start_address), NULL, 0);
429 if (status)
430 return status;
431 }
432
433 dbg("%s - start_sddr = %x, length = %d",
434 __func__, start_address, length);
435 usb_serial_debug_data(debug, &serial->serial->dev->dev,
436 __func__, length, buffer);
437
438 return status;
439 }
440
441
442 /* Write edgeport I2C memory to TI chip */
443 static int write_i2c_mem(struct edgeport_serial *serial,
444 int start_address, int length, __u8 address_type, __u8 *buffer)
445 {
446 int status = 0;
447 int write_length;
448 __be16 be_start_address;
449
450 /* We can only send a maximum of 1 aligned byte page at a time */
451
452 /* calulate the number of bytes left in the first page */
453 write_length = EPROM_PAGE_SIZE -
454 (start_address & (EPROM_PAGE_SIZE - 1));
455
456 if (write_length > length)
457 write_length = length;
458
459 dbg("%s - BytesInFirstPage Addr = %x, length = %d",
460 __func__, start_address, write_length);
461 usb_serial_debug_data(debug, &serial->serial->dev->dev,
462 __func__, write_length, buffer);
463
464 /* Write first page */
465 be_start_address = cpu_to_be16(start_address);
466 status = ti_vsend_sync(serial->serial->dev,
467 UMPC_MEMORY_WRITE, (__u16)address_type,
468 (__force __u16)be_start_address,
469 buffer, write_length);
470 if (status) {
471 dbg("%s - ERROR %d", __func__, status);
472 return status;
473 }
474
475 length -= write_length;
476 start_address += write_length;
477 buffer += write_length;
478
479 /* We should be aligned now -- can write
480 max page size bytes at a time */
481 while (length) {
482 if (length > EPROM_PAGE_SIZE)
483 write_length = EPROM_PAGE_SIZE;
484 else
485 write_length = length;
486
487 dbg("%s - Page Write Addr = %x, length = %d",
488 __func__, start_address, write_length);
489 usb_serial_debug_data(debug, &serial->serial->dev->dev,
490 __func__, write_length, buffer);
491
492 /* Write next page */
493 be_start_address = cpu_to_be16(start_address);
494 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
495 (__u16)address_type,
496 (__force __u16)be_start_address,
497 buffer, write_length);
498 if (status) {
499 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
500 __func__, status);
501 return status;
502 }
503
504 length -= write_length;
505 start_address += write_length;
506 buffer += write_length;
507 }
508 return status;
509 }
510
511 /* Examine the UMP DMA registers and LSR
512 *
513 * Check the MSBit of the X and Y DMA byte count registers.
514 * A zero in this bit indicates that the TX DMA buffers are empty
515 * then check the TX Empty bit in the UART.
516 */
517 static int tx_active(struct edgeport_port *port)
518 {
519 int status;
520 struct out_endpoint_desc_block *oedb;
521 __u8 *lsr;
522 int bytes_left = 0;
523
524 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
525 if (!oedb) {
526 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
527 return -ENOMEM;
528 }
529
530 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
531 as not all platforms can do DMA
532 from stack */
533 if (!lsr) {
534 kfree(oedb);
535 return -ENOMEM;
536 }
537 /* Read the DMA Count Registers */
538 status = read_ram(port->port->serial->dev, port->dma_address,
539 sizeof(*oedb), (void *)oedb);
540 if (status)
541 goto exit_is_tx_active;
542
543 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount);
544
545 /* and the LSR */
546 status = read_ram(port->port->serial->dev,
547 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
548
549 if (status)
550 goto exit_is_tx_active;
551 dbg("%s - LSR = 0x%X", __func__, *lsr);
552
553 /* If either buffer has data or we are transmitting then return TRUE */
554 if ((oedb->XByteCount & 0x80) != 0)
555 bytes_left += 64;
556
557 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
558 bytes_left += 1;
559
560 /* We return Not Active if we get any kind of error */
561 exit_is_tx_active:
562 dbg("%s - return %d", __func__, bytes_left);
563
564 kfree(lsr);
565 kfree(oedb);
566 return bytes_left;
567 }
568
569 static void chase_port(struct edgeport_port *port, unsigned long timeout,
570 int flush)
571 {
572 int baud_rate;
573 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
574 wait_queue_t wait;
575 unsigned long flags;
576
577 if (!timeout)
578 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
579
580 /* wait for data to drain from the buffer */
581 spin_lock_irqsave(&port->ep_lock, flags);
582 init_waitqueue_entry(&wait, current);
583 add_wait_queue(&tty->write_wait, &wait);
584 for (;;) {
585 set_current_state(TASK_INTERRUPTIBLE);
586 if (edge_buf_data_avail(port->ep_out_buf) == 0
587 || timeout == 0 || signal_pending(current)
588 || !usb_get_intfdata(port->port->serial->interface))
589 /* disconnect */
590 break;
591 spin_unlock_irqrestore(&port->ep_lock, flags);
592 timeout = schedule_timeout(timeout);
593 spin_lock_irqsave(&port->ep_lock, flags);
594 }
595 set_current_state(TASK_RUNNING);
596 remove_wait_queue(&tty->write_wait, &wait);
597 if (flush)
598 edge_buf_clear(port->ep_out_buf);
599 spin_unlock_irqrestore(&port->ep_lock, flags);
600 tty_kref_put(tty);
601
602 /* wait for data to drain from the device */
603 timeout += jiffies;
604 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
605 && usb_get_intfdata(port->port->serial->interface)) {
606 /* not disconnected */
607 if (!tx_active(port))
608 break;
609 msleep(10);
610 }
611
612 /* disconnected */
613 if (!usb_get_intfdata(port->port->serial->interface))
614 return;
615
616 /* wait one more character time, based on baud rate */
617 /* (tx_active doesn't seem to wait for the last byte) */
618 baud_rate = port->baud_rate;
619 if (baud_rate == 0)
620 baud_rate = 50;
621 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
622 }
623
624 static int choose_config(struct usb_device *dev)
625 {
626 /*
627 * There may be multiple configurations on this device, in which case
628 * we would need to read and parse all of them to find out which one
629 * we want. However, we just support one config at this point,
630 * configuration # 1, which is Config Descriptor 0.
631 */
632
633 dbg("%s - Number of Interfaces = %d",
634 __func__, dev->config->desc.bNumInterfaces);
635 dbg("%s - MAX Power = %d",
636 __func__, dev->config->desc.bMaxPower * 2);
637
638 if (dev->config->desc.bNumInterfaces != 1) {
639 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
640 __func__);
641 return -ENODEV;
642 }
643
644 return 0;
645 }
646
647 static int read_rom(struct edgeport_serial *serial,
648 int start_address, int length, __u8 *buffer)
649 {
650 int status;
651
652 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
653 status = read_download_mem(serial->serial->dev,
654 start_address,
655 length,
656 serial->TI_I2C_Type,
657 buffer);
658 } else {
659 status = read_boot_mem(serial, start_address, length,
660 buffer);
661 }
662 return status;
663 }
664
665 static int write_rom(struct edgeport_serial *serial, int start_address,
666 int length, __u8 *buffer)
667 {
668 if (serial->product_info.TiMode == TI_MODE_BOOT)
669 return write_boot_mem(serial, start_address, length,
670 buffer);
671
672 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
673 return write_i2c_mem(serial, start_address, length,
674 serial->TI_I2C_Type, buffer);
675 return -EINVAL;
676 }
677
678
679
680 /* Read a descriptor header from I2C based on type */
681 static int get_descriptor_addr(struct edgeport_serial *serial,
682 int desc_type, struct ti_i2c_desc *rom_desc)
683 {
684 int start_address;
685 int status;
686
687 /* Search for requested descriptor in I2C */
688 start_address = 2;
689 do {
690 status = read_rom(serial,
691 start_address,
692 sizeof(struct ti_i2c_desc),
693 (__u8 *)rom_desc);
694 if (status)
695 return 0;
696
697 if (rom_desc->Type == desc_type)
698 return start_address;
699
700 start_address = start_address + sizeof(struct ti_i2c_desc)
701 + rom_desc->Size;
702
703 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
704
705 return 0;
706 }
707
708 /* Validate descriptor checksum */
709 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
710 {
711 __u16 i;
712 __u8 cs = 0;
713
714 for (i = 0; i < rom_desc->Size; i++)
715 cs = (__u8)(cs + buffer[i]);
716
717 if (cs != rom_desc->CheckSum) {
718 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
719 return -EINVAL;
720 }
721 return 0;
722 }
723
724 /* Make sure that the I2C image is good */
725 static int check_i2c_image(struct edgeport_serial *serial)
726 {
727 struct device *dev = &serial->serial->dev->dev;
728 int status = 0;
729 struct ti_i2c_desc *rom_desc;
730 int start_address = 2;
731 __u8 *buffer;
732 __u16 ttype;
733
734 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
735 if (!rom_desc) {
736 dev_err(dev, "%s - out of memory\n", __func__);
737 return -ENOMEM;
738 }
739 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
740 if (!buffer) {
741 dev_err(dev, "%s - out of memory when allocating buffer\n",
742 __func__);
743 kfree(rom_desc);
744 return -ENOMEM;
745 }
746
747 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
748 status = read_rom(serial, 0, 1, buffer);
749 if (status)
750 goto out;
751
752 if (*buffer != UMP5152 && *buffer != UMP3410) {
753 dev_err(dev, "%s - invalid buffer signature\n", __func__);
754 status = -ENODEV;
755 goto out;
756 }
757
758 do {
759 /* Validate the I2C */
760 status = read_rom(serial,
761 start_address,
762 sizeof(struct ti_i2c_desc),
763 (__u8 *)rom_desc);
764 if (status)
765 break;
766
767 if ((start_address + sizeof(struct ti_i2c_desc) +
768 rom_desc->Size) > TI_MAX_I2C_SIZE) {
769 status = -ENODEV;
770 dbg("%s - structure too big, erroring out.", __func__);
771 break;
772 }
773
774 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
775
776 /* Skip type 2 record */
777 ttype = rom_desc->Type & 0x0f;
778 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
779 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
780 /* Read the descriptor data */
781 status = read_rom(serial, start_address +
782 sizeof(struct ti_i2c_desc),
783 rom_desc->Size, buffer);
784 if (status)
785 break;
786
787 status = valid_csum(rom_desc, buffer);
788 if (status)
789 break;
790 }
791 start_address = start_address + sizeof(struct ti_i2c_desc) +
792 rom_desc->Size;
793
794 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
795 (start_address < TI_MAX_I2C_SIZE));
796
797 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
798 (start_address > TI_MAX_I2C_SIZE))
799 status = -ENODEV;
800
801 out:
802 kfree(buffer);
803 kfree(rom_desc);
804 return status;
805 }
806
807 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
808 {
809 int status;
810 int start_address;
811 struct ti_i2c_desc *rom_desc;
812 struct edge_ti_manuf_descriptor *desc;
813
814 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
815 if (!rom_desc) {
816 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
817 __func__);
818 return -ENOMEM;
819 }
820 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
821 rom_desc);
822
823 if (!start_address) {
824 dbg("%s - Edge Descriptor not found in I2C", __func__);
825 status = -ENODEV;
826 goto exit;
827 }
828
829 /* Read the descriptor data */
830 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
831 rom_desc->Size, buffer);
832 if (status)
833 goto exit;
834
835 status = valid_csum(rom_desc, buffer);
836
837 desc = (struct edge_ti_manuf_descriptor *)buffer;
838 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig);
839 dbg("%s - Version %d", __func__, desc->Version);
840 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev);
841 dbg("%s - NumPorts %d", __func__, desc->NumPorts);
842 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts);
843 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts);
844
845 exit:
846 kfree(rom_desc);
847 return status;
848 }
849
850 /* Build firmware header used for firmware update */
851 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
852 {
853 __u8 *buffer;
854 int buffer_size;
855 int i;
856 int err;
857 __u8 cs = 0;
858 struct ti_i2c_desc *i2c_header;
859 struct ti_i2c_image_header *img_header;
860 struct ti_i2c_firmware_rec *firmware_rec;
861 const struct firmware *fw;
862 const char *fw_name = "edgeport/down3.bin";
863
864 /* In order to update the I2C firmware we must change the type 2 record
865 * to type 0xF2. This will force the UMP to come up in Boot Mode.
866 * Then while in boot mode, the driver will download the latest
867 * firmware (padded to 15.5k) into the UMP ram. And finally when the
868 * device comes back up in download mode the driver will cause the new
869 * firmware to be copied from the UMP Ram to I2C and the firmware will
870 * update the record type from 0xf2 to 0x02.
871 */
872
873 /* Allocate a 15.5k buffer + 2 bytes for version number
874 * (Firmware Record) */
875 buffer_size = (((1024 * 16) - 512 ) +
876 sizeof(struct ti_i2c_firmware_rec));
877
878 buffer = kmalloc(buffer_size, GFP_KERNEL);
879 if (!buffer) {
880 dev_err(dev, "%s - out of memory\n", __func__);
881 return -ENOMEM;
882 }
883
884 // Set entire image of 0xffs
885 memset(buffer, 0xff, buffer_size);
886
887 err = request_firmware(&fw, fw_name, dev);
888 if (err) {
889 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
890 fw_name, err);
891 kfree(buffer);
892 return err;
893 }
894
895 /* Save Download Version Number */
896 OperationalMajorVersion = fw->data[0];
897 OperationalMinorVersion = fw->data[1];
898 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
899
900 /* Copy version number into firmware record */
901 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
902
903 firmware_rec->Ver_Major = OperationalMajorVersion;
904 firmware_rec->Ver_Minor = OperationalMinorVersion;
905
906 /* Pointer to fw_down memory image */
907 img_header = (struct ti_i2c_image_header *)&fw->data[4];
908
909 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
910 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
911 le16_to_cpu(img_header->Length));
912
913 release_firmware(fw);
914
915 for (i=0; i < buffer_size; i++) {
916 cs = (__u8)(cs + buffer[i]);
917 }
918
919 kfree(buffer);
920
921 /* Build new header */
922 i2c_header = (struct ti_i2c_desc *)header;
923 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
924
925 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
926 i2c_header->Size = (__u16)buffer_size;
927 i2c_header->CheckSum = cs;
928 firmware_rec->Ver_Major = OperationalMajorVersion;
929 firmware_rec->Ver_Minor = OperationalMinorVersion;
930
931 return 0;
932 }
933
934 /* Try to figure out what type of I2c we have */
935 static int i2c_type_bootmode(struct edgeport_serial *serial)
936 {
937 int status;
938 __u8 data;
939
940 /* Try to read type 2 */
941 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
942 DTK_ADDR_SPACE_I2C_TYPE_II, 0, &data, 0x01);
943 if (status)
944 dbg("%s - read 2 status error = %d", __func__, status);
945 else
946 dbg("%s - read 2 data = 0x%x", __func__, data);
947 if ((!status) && (data == UMP5152 || data == UMP3410)) {
948 dbg("%s - ROM_TYPE_II", __func__);
949 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
950 return 0;
951 }
952
953 /* Try to read type 3 */
954 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
955 DTK_ADDR_SPACE_I2C_TYPE_III, 0, &data, 0x01);
956 if (status)
957 dbg("%s - read 3 status error = %d", __func__, status);
958 else
959 dbg("%s - read 2 data = 0x%x", __func__, data);
960 if ((!status) && (data == UMP5152 || data == UMP3410)) {
961 dbg("%s - ROM_TYPE_III", __func__);
962 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
963 return 0;
964 }
965
966 dbg("%s - Unknown", __func__);
967 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
968 return -ENODEV;
969 }
970
971 static int bulk_xfer(struct usb_serial *serial, void *buffer,
972 int length, int *num_sent)
973 {
974 int status;
975
976 status = usb_bulk_msg(serial->dev,
977 usb_sndbulkpipe(serial->dev,
978 serial->port[0]->bulk_out_endpointAddress),
979 buffer, length, num_sent, 1000);
980 return status;
981 }
982
983 /* Download given firmware image to the device (IN BOOT MODE) */
984 static int download_code(struct edgeport_serial *serial, __u8 *image,
985 int image_length)
986 {
987 int status = 0;
988 int pos;
989 int transfer;
990 int done;
991
992 /* Transfer firmware image */
993 for (pos = 0; pos < image_length; ) {
994 /* Read the next buffer from file */
995 transfer = image_length - pos;
996 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
997 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
998
999 /* Transfer data */
1000 status = bulk_xfer(serial->serial, &image[pos],
1001 transfer, &done);
1002 if (status)
1003 break;
1004 /* Advance buffer pointer */
1005 pos += done;
1006 }
1007
1008 return status;
1009 }
1010
1011 /* FIXME!!! */
1012 static int config_boot_dev(struct usb_device *dev)
1013 {
1014 return 0;
1015 }
1016
1017 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1018 {
1019 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1020 }
1021
1022 /**
1023 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1024 *
1025 * This routine downloads the main operating code into the TI5052, using the
1026 * boot code already burned into E2PROM or ROM.
1027 */
1028 static int download_fw(struct edgeport_serial *serial)
1029 {
1030 struct device *dev = &serial->serial->dev->dev;
1031 int status = 0;
1032 int start_address;
1033 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1034 struct usb_interface_descriptor *interface;
1035 int download_cur_ver;
1036 int download_new_ver;
1037
1038 /* This routine is entered by both the BOOT mode and the Download mode
1039 * We can determine which code is running by the reading the config
1040 * descriptor and if we have only one bulk pipe it is in boot mode
1041 */
1042 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1043
1044 /* Default to type 2 i2c */
1045 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1046
1047 status = choose_config(serial->serial->dev);
1048 if (status)
1049 return status;
1050
1051 interface = &serial->serial->interface->cur_altsetting->desc;
1052 if (!interface) {
1053 dev_err(dev, "%s - no interface set, error!\n", __func__);
1054 return -ENODEV;
1055 }
1056
1057 /*
1058 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1059 * if we have more than one endpoint we are definitely in download
1060 * mode
1061 */
1062 if (interface->bNumEndpoints > 1)
1063 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1064 else
1065 /* Otherwise we will remain in configuring mode */
1066 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1067
1068 /********************************************************************/
1069 /* Download Mode */
1070 /********************************************************************/
1071 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1072 struct ti_i2c_desc *rom_desc;
1073
1074 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1075
1076 status = check_i2c_image(serial);
1077 if (status) {
1078 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1079 return status;
1080 }
1081
1082 /* Validate Hardware version number
1083 * Read Manufacturing Descriptor from TI Based Edgeport
1084 */
1085 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1086 if (!ti_manuf_desc) {
1087 dev_err(dev, "%s - out of memory.\n", __func__);
1088 return -ENOMEM;
1089 }
1090 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1091 if (status) {
1092 kfree(ti_manuf_desc);
1093 return status;
1094 }
1095
1096 /* Check version number of ION descriptor */
1097 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1098 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1099 __func__, ti_cpu_rev(ti_manuf_desc));
1100 kfree(ti_manuf_desc);
1101 return -EINVAL;
1102 }
1103
1104 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1105 if (!rom_desc) {
1106 dev_err(dev, "%s - out of memory.\n", __func__);
1107 kfree(ti_manuf_desc);
1108 return -ENOMEM;
1109 }
1110
1111 /* Search for type 2 record (firmware record) */
1112 start_address = get_descriptor_addr(serial,
1113 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1114 if (start_address != 0) {
1115 struct ti_i2c_firmware_rec *firmware_version;
1116 __u8 record;
1117
1118 dbg("%s - Found Type FIRMWARE (Type 2) record",
1119 __func__);
1120
1121 firmware_version = kmalloc(sizeof(*firmware_version),
1122 GFP_KERNEL);
1123 if (!firmware_version) {
1124 dev_err(dev, "%s - out of memory.\n", __func__);
1125 kfree(rom_desc);
1126 kfree(ti_manuf_desc);
1127 return -ENOMEM;
1128 }
1129
1130 /* Validate version number
1131 * Read the descriptor data
1132 */
1133 status = read_rom(serial, start_address +
1134 sizeof(struct ti_i2c_desc),
1135 sizeof(struct ti_i2c_firmware_rec),
1136 (__u8 *)firmware_version);
1137 if (status) {
1138 kfree(firmware_version);
1139 kfree(rom_desc);
1140 kfree(ti_manuf_desc);
1141 return status;
1142 }
1143
1144 /* Check version number of download with current
1145 version in I2c */
1146 download_cur_ver = (firmware_version->Ver_Major << 8) +
1147 (firmware_version->Ver_Minor);
1148 download_new_ver = (OperationalMajorVersion << 8) +
1149 (OperationalMinorVersion);
1150
1151 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d",
1152 __func__,
1153 firmware_version->Ver_Major,
1154 firmware_version->Ver_Minor,
1155 OperationalMajorVersion,
1156 OperationalMinorVersion);
1157
1158 /* Check if we have an old version in the I2C and
1159 update if necessary */
1160 if (download_cur_ver != download_new_ver) {
1161 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1162 __func__,
1163 firmware_version->Ver_Major,
1164 firmware_version->Ver_Minor,
1165 OperationalMajorVersion,
1166 OperationalMinorVersion);
1167
1168 /* In order to update the I2C firmware we must
1169 * change the type 2 record to type 0xF2. This
1170 * will force the UMP to come up in Boot Mode.
1171 * Then while in boot mode, the driver will
1172 * download the latest firmware (padded to
1173 * 15.5k) into the UMP ram. Finally when the
1174 * device comes back up in download mode the
1175 * driver will cause the new firmware to be
1176 * copied from the UMP Ram to I2C and the
1177 * firmware will update the record type from
1178 * 0xf2 to 0x02.
1179 */
1180 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1181
1182 /* Change the I2C Firmware record type to
1183 0xf2 to trigger an update */
1184 status = write_rom(serial, start_address,
1185 sizeof(record), &record);
1186 if (status) {
1187 kfree(firmware_version);
1188 kfree(rom_desc);
1189 kfree(ti_manuf_desc);
1190 return status;
1191 }
1192
1193 /* verify the write -- must do this in order
1194 * for write to complete before we do the
1195 * hardware reset
1196 */
1197 status = read_rom(serial,
1198 start_address,
1199 sizeof(record),
1200 &record);
1201 if (status) {
1202 kfree(firmware_version);
1203 kfree(rom_desc);
1204 kfree(ti_manuf_desc);
1205 return status;
1206 }
1207
1208 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1209 dev_err(dev,
1210 "%s - error resetting device\n",
1211 __func__);
1212 kfree(firmware_version);
1213 kfree(rom_desc);
1214 kfree(ti_manuf_desc);
1215 return -ENODEV;
1216 }
1217
1218 dbg("%s - HARDWARE RESET", __func__);
1219
1220 /* Reset UMP -- Back to BOOT MODE */
1221 status = ti_vsend_sync(serial->serial->dev,
1222 UMPC_HARDWARE_RESET,
1223 0, 0, NULL, 0);
1224
1225 dbg("%s - HARDWARE RESET return %d",
1226 __func__, status);
1227
1228 /* return an error on purpose. */
1229 kfree(firmware_version);
1230 kfree(rom_desc);
1231 kfree(ti_manuf_desc);
1232 return -ENODEV;
1233 }
1234 kfree(firmware_version);
1235 }
1236 /* Search for type 0xF2 record (firmware blank record) */
1237 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1238 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1239 sizeof(struct ti_i2c_firmware_rec))
1240 __u8 *header;
1241 __u8 *vheader;
1242
1243 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1244 if (!header) {
1245 dev_err(dev, "%s - out of memory.\n", __func__);
1246 kfree(rom_desc);
1247 kfree(ti_manuf_desc);
1248 return -ENOMEM;
1249 }
1250
1251 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1252 if (!vheader) {
1253 dev_err(dev, "%s - out of memory.\n", __func__);
1254 kfree(header);
1255 kfree(rom_desc);
1256 kfree(ti_manuf_desc);
1257 return -ENOMEM;
1258 }
1259
1260 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1261 __func__);
1262
1263 /*
1264 * In order to update the I2C firmware we must change
1265 * the type 2 record to type 0xF2. This will force the
1266 * UMP to come up in Boot Mode. Then while in boot
1267 * mode, the driver will download the latest firmware
1268 * (padded to 15.5k) into the UMP ram. Finally when the
1269 * device comes back up in download mode the driver
1270 * will cause the new firmware to be copied from the
1271 * UMP Ram to I2C and the firmware will update the
1272 * record type from 0xf2 to 0x02.
1273 */
1274 status = build_i2c_fw_hdr(header, dev);
1275 if (status) {
1276 kfree(vheader);
1277 kfree(header);
1278 kfree(rom_desc);
1279 kfree(ti_manuf_desc);
1280 return status;
1281 }
1282
1283 /* Update I2C with type 0xf2 record with correct
1284 size and checksum */
1285 status = write_rom(serial,
1286 start_address,
1287 HEADER_SIZE,
1288 header);
1289 if (status) {
1290 kfree(vheader);
1291 kfree(header);
1292 kfree(rom_desc);
1293 kfree(ti_manuf_desc);
1294 return status;
1295 }
1296
1297 /* verify the write -- must do this in order for
1298 write to complete before we do the hardware reset */
1299 status = read_rom(serial, start_address,
1300 HEADER_SIZE, vheader);
1301
1302 if (status) {
1303 dbg("%s - can't read header back", __func__);
1304 kfree(vheader);
1305 kfree(header);
1306 kfree(rom_desc);
1307 kfree(ti_manuf_desc);
1308 return status;
1309 }
1310 if (memcmp(vheader, header, HEADER_SIZE)) {
1311 dbg("%s - write download record failed",
1312 __func__);
1313 kfree(vheader);
1314 kfree(header);
1315 kfree(rom_desc);
1316 kfree(ti_manuf_desc);
1317 return status;
1318 }
1319
1320 kfree(vheader);
1321 kfree(header);
1322
1323 dbg("%s - Start firmware update", __func__);
1324
1325 /* Tell firmware to copy download image into I2C */
1326 status = ti_vsend_sync(serial->serial->dev,
1327 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1328
1329 dbg("%s - Update complete 0x%x", __func__, status);
1330 if (status) {
1331 dev_err(dev,
1332 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1333 __func__);
1334 kfree(rom_desc);
1335 kfree(ti_manuf_desc);
1336 return status;
1337 }
1338 }
1339
1340 // The device is running the download code
1341 kfree(rom_desc);
1342 kfree(ti_manuf_desc);
1343 return 0;
1344 }
1345
1346 /********************************************************************/
1347 /* Boot Mode */
1348 /********************************************************************/
1349 dbg("%s - RUNNING IN BOOT MODE", __func__);
1350
1351 /* Configure the TI device so we can use the BULK pipes for download */
1352 status = config_boot_dev(serial->serial->dev);
1353 if (status)
1354 return status;
1355
1356 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1357 != USB_VENDOR_ID_ION) {
1358 dbg("%s - VID = 0x%x", __func__,
1359 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1360 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1361 goto stayinbootmode;
1362 }
1363
1364 /* We have an ION device (I2c Must be programmed)
1365 Determine I2C image type */
1366 if (i2c_type_bootmode(serial))
1367 goto stayinbootmode;
1368
1369 /* Check for ION Vendor ID and that the I2C is valid */
1370 if (!check_i2c_image(serial)) {
1371 struct ti_i2c_image_header *header;
1372 int i;
1373 __u8 cs = 0;
1374 __u8 *buffer;
1375 int buffer_size;
1376 int err;
1377 const struct firmware *fw;
1378 const char *fw_name = "edgeport/down3.bin";
1379
1380 /* Validate Hardware version number
1381 * Read Manufacturing Descriptor from TI Based Edgeport
1382 */
1383 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1384 if (!ti_manuf_desc) {
1385 dev_err(dev, "%s - out of memory.\n", __func__);
1386 return -ENOMEM;
1387 }
1388 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1389 if (status) {
1390 kfree(ti_manuf_desc);
1391 goto stayinbootmode;
1392 }
1393
1394 /* Check for version 2 */
1395 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1396 dbg("%s - Wrong CPU Rev %d (Must be 2)",
1397 __func__, ti_cpu_rev(ti_manuf_desc));
1398 kfree(ti_manuf_desc);
1399 goto stayinbootmode;
1400 }
1401
1402 kfree(ti_manuf_desc);
1403
1404 /*
1405 * In order to update the I2C firmware we must change the type
1406 * 2 record to type 0xF2. This will force the UMP to come up
1407 * in Boot Mode. Then while in boot mode, the driver will
1408 * download the latest firmware (padded to 15.5k) into the
1409 * UMP ram. Finally when the device comes back up in download
1410 * mode the driver will cause the new firmware to be copied
1411 * from the UMP Ram to I2C and the firmware will update the
1412 * record type from 0xf2 to 0x02.
1413 *
1414 * Do we really have to copy the whole firmware image,
1415 * or could we do this in place!
1416 */
1417
1418 /* Allocate a 15.5k buffer + 3 byte header */
1419 buffer_size = (((1024 * 16) - 512) +
1420 sizeof(struct ti_i2c_image_header));
1421 buffer = kmalloc(buffer_size, GFP_KERNEL);
1422 if (!buffer) {
1423 dev_err(dev, "%s - out of memory\n", __func__);
1424 return -ENOMEM;
1425 }
1426
1427 /* Initialize the buffer to 0xff (pad the buffer) */
1428 memset(buffer, 0xff, buffer_size);
1429
1430 err = request_firmware(&fw, fw_name, dev);
1431 if (err) {
1432 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1433 fw_name, err);
1434 kfree(buffer);
1435 return err;
1436 }
1437 memcpy(buffer, &fw->data[4], fw->size - 4);
1438 release_firmware(fw);
1439
1440 for (i = sizeof(struct ti_i2c_image_header);
1441 i < buffer_size; i++) {
1442 cs = (__u8)(cs + buffer[i]);
1443 }
1444
1445 header = (struct ti_i2c_image_header *)buffer;
1446
1447 /* update length and checksum after padding */
1448 header->Length = cpu_to_le16((__u16)(buffer_size -
1449 sizeof(struct ti_i2c_image_header)));
1450 header->CheckSum = cs;
1451
1452 /* Download the operational code */
1453 dbg("%s - Downloading operational code image (TI UMP)",
1454 __func__);
1455 status = download_code(serial, buffer, buffer_size);
1456
1457 kfree(buffer);
1458
1459 if (status) {
1460 dbg("%s - Error downloading operational code image",
1461 __func__);
1462 return status;
1463 }
1464
1465 /* Device will reboot */
1466 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1467
1468 dbg("%s - Download successful -- Device rebooting...",
1469 __func__);
1470
1471 /* return an error on purpose */
1472 return -ENODEV;
1473 }
1474
1475 stayinbootmode:
1476 /* Eprom is invalid or blank stay in boot mode */
1477 dbg("%s - STAYING IN BOOT MODE", __func__);
1478 serial->product_info.TiMode = TI_MODE_BOOT;
1479
1480 return 0;
1481 }
1482
1483
1484 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1485 {
1486 int port_number = port->port->number - port->port->serial->minor;
1487 on = !!on; /* 1 or 0 not bitmask */
1488 return send_cmd(port->port->serial->dev,
1489 feature, (__u8)(UMPM_UART1_PORT + port_number),
1490 on, NULL, 0);
1491 }
1492
1493
1494 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1495 {
1496 int status = 0;
1497
1498 dbg("%s - %x", __func__, mcr);
1499
1500 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1501 if (status)
1502 return status;
1503 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1504 if (status)
1505 return status;
1506 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1507 }
1508
1509 /* Convert TI LSR to standard UART flags */
1510 static __u8 map_line_status(__u8 ti_lsr)
1511 {
1512 __u8 lsr = 0;
1513
1514 #define MAP_FLAG(flagUmp, flagUart) \
1515 if (ti_lsr & flagUmp) \
1516 lsr |= flagUart;
1517
1518 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1519 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1520 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1521 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1522 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1523 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1524
1525 #undef MAP_FLAG
1526
1527 return lsr;
1528 }
1529
1530 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1531 {
1532 struct async_icount *icount;
1533 struct tty_struct *tty;
1534
1535 dbg("%s - %02x", __func__, msr);
1536
1537 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1538 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1539 icount = &edge_port->icount;
1540
1541 /* update input line counters */
1542 if (msr & EDGEPORT_MSR_DELTA_CTS)
1543 icount->cts++;
1544 if (msr & EDGEPORT_MSR_DELTA_DSR)
1545 icount->dsr++;
1546 if (msr & EDGEPORT_MSR_DELTA_CD)
1547 icount->dcd++;
1548 if (msr & EDGEPORT_MSR_DELTA_RI)
1549 icount->rng++;
1550 wake_up_interruptible(&edge_port->delta_msr_wait);
1551 }
1552
1553 /* Save the new modem status */
1554 edge_port->shadow_msr = msr & 0xf0;
1555
1556 tty = tty_port_tty_get(&edge_port->port->port);
1557 /* handle CTS flow control */
1558 if (tty && C_CRTSCTS(tty)) {
1559 if (msr & EDGEPORT_MSR_CTS) {
1560 tty->hw_stopped = 0;
1561 tty_wakeup(tty);
1562 } else {
1563 tty->hw_stopped = 1;
1564 }
1565 }
1566 tty_kref_put(tty);
1567
1568 return;
1569 }
1570
1571 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1572 __u8 lsr, __u8 data)
1573 {
1574 struct async_icount *icount;
1575 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1576 LSR_FRM_ERR | LSR_BREAK));
1577 struct tty_struct *tty;
1578
1579 dbg("%s - %02x", __func__, new_lsr);
1580
1581 edge_port->shadow_lsr = lsr;
1582
1583 if (new_lsr & LSR_BREAK)
1584 /*
1585 * Parity and Framing errors only count if they
1586 * occur exclusive of a break being received.
1587 */
1588 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1589
1590 /* Place LSR data byte into Rx buffer */
1591 if (lsr_data) {
1592 tty = tty_port_tty_get(&edge_port->port->port);
1593 if (tty) {
1594 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1595 tty_kref_put(tty);
1596 }
1597 }
1598
1599 /* update input line counters */
1600 icount = &edge_port->icount;
1601 if (new_lsr & LSR_BREAK)
1602 icount->brk++;
1603 if (new_lsr & LSR_OVER_ERR)
1604 icount->overrun++;
1605 if (new_lsr & LSR_PAR_ERR)
1606 icount->parity++;
1607 if (new_lsr & LSR_FRM_ERR)
1608 icount->frame++;
1609 }
1610
1611
1612 static void edge_interrupt_callback(struct urb *urb)
1613 {
1614 struct edgeport_serial *edge_serial = urb->context;
1615 struct usb_serial_port *port;
1616 struct edgeport_port *edge_port;
1617 unsigned char *data = urb->transfer_buffer;
1618 int length = urb->actual_length;
1619 int port_number;
1620 int function;
1621 int retval;
1622 __u8 lsr;
1623 __u8 msr;
1624 int status = urb->status;
1625
1626 dbg("%s", __func__);
1627
1628 switch (status) {
1629 case 0:
1630 /* success */
1631 break;
1632 case -ECONNRESET:
1633 case -ENOENT:
1634 case -ESHUTDOWN:
1635 /* this urb is terminated, clean up */
1636 dbg("%s - urb shutting down with status: %d",
1637 __func__, status);
1638 return;
1639 default:
1640 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1641 "%d\n", __func__, status);
1642 goto exit;
1643 }
1644
1645 if (!length) {
1646 dbg("%s - no data in urb", __func__);
1647 goto exit;
1648 }
1649
1650 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1651 __func__, length, data);
1652
1653 if (length != 2) {
1654 dbg("%s - expecting packet of size 2, got %d",
1655 __func__, length);
1656 goto exit;
1657 }
1658
1659 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1660 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1661 dbg("%s - port_number %d, function %d, info 0x%x",
1662 __func__, port_number, function, data[1]);
1663 port = edge_serial->serial->port[port_number];
1664 edge_port = usb_get_serial_port_data(port);
1665 if (!edge_port) {
1666 dbg("%s - edge_port not found", __func__);
1667 return;
1668 }
1669 switch (function) {
1670 case TIUMP_INTERRUPT_CODE_LSR:
1671 lsr = map_line_status(data[1]);
1672 if (lsr & UMP_UART_LSR_DATA_MASK) {
1673 /* Save the LSR event for bulk read
1674 completion routine */
1675 dbg("%s - LSR Event Port %u LSR Status = %02x",
1676 __func__, port_number, lsr);
1677 edge_port->lsr_event = 1;
1678 edge_port->lsr_mask = lsr;
1679 } else {
1680 dbg("%s - ===== Port %d LSR Status = %02x ======",
1681 __func__, port_number, lsr);
1682 handle_new_lsr(edge_port, 0, lsr, 0);
1683 }
1684 break;
1685
1686 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1687 /* Copy MSR from UMP */
1688 msr = data[1];
1689 dbg("%s - ===== Port %u MSR Status = %02x ======\n",
1690 __func__, port_number, msr);
1691 handle_new_msr(edge_port, msr);
1692 break;
1693
1694 default:
1695 dev_err(&urb->dev->dev,
1696 "%s - Unknown Interrupt code from UMP %x\n",
1697 __func__, data[1]);
1698 break;
1699
1700 }
1701
1702 exit:
1703 retval = usb_submit_urb(urb, GFP_ATOMIC);
1704 if (retval)
1705 dev_err(&urb->dev->dev,
1706 "%s - usb_submit_urb failed with result %d\n",
1707 __func__, retval);
1708 }
1709
1710 static void edge_bulk_in_callback(struct urb *urb)
1711 {
1712 struct edgeport_port *edge_port = urb->context;
1713 unsigned char *data = urb->transfer_buffer;
1714 struct tty_struct *tty;
1715 int retval = 0;
1716 int port_number;
1717 int status = urb->status;
1718
1719 dbg("%s", __func__);
1720
1721 switch (status) {
1722 case 0:
1723 /* success */
1724 break;
1725 case -ECONNRESET:
1726 case -ENOENT:
1727 case -ESHUTDOWN:
1728 /* this urb is terminated, clean up */
1729 dbg("%s - urb shutting down with status: %d",
1730 __func__, status);
1731 return;
1732 default:
1733 dev_err(&urb->dev->dev,
1734 "%s - nonzero read bulk status received: %d\n",
1735 __func__, status);
1736 }
1737
1738 if (status == -EPIPE)
1739 goto exit;
1740
1741 if (status) {
1742 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1743 return;
1744 }
1745
1746 port_number = edge_port->port->number - edge_port->port->serial->minor;
1747
1748 if (edge_port->lsr_event) {
1749 edge_port->lsr_event = 0;
1750 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1751 __func__, port_number, edge_port->lsr_mask, *data);
1752 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1753 /* Adjust buffer length/pointer */
1754 --urb->actual_length;
1755 ++data;
1756 }
1757
1758 tty = tty_port_tty_get(&edge_port->port->port);
1759 if (tty && urb->actual_length) {
1760 usb_serial_debug_data(debug, &edge_port->port->dev,
1761 __func__, urb->actual_length, data);
1762 if (edge_port->close_pending)
1763 dbg("%s - close pending, dropping data on the floor",
1764 __func__);
1765 else
1766 edge_tty_recv(&edge_port->port->dev, tty, data,
1767 urb->actual_length);
1768 edge_port->icount.rx += urb->actual_length;
1769 }
1770 tty_kref_put(tty);
1771
1772 exit:
1773 /* continue read unless stopped */
1774 spin_lock(&edge_port->ep_lock);
1775 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1776 urb->dev = edge_port->port->serial->dev;
1777 retval = usb_submit_urb(urb, GFP_ATOMIC);
1778 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1779 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1780 }
1781 spin_unlock(&edge_port->ep_lock);
1782 if (retval)
1783 dev_err(&urb->dev->dev,
1784 "%s - usb_submit_urb failed with result %d\n",
1785 __func__, retval);
1786 }
1787
1788 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1789 unsigned char *data, int length)
1790 {
1791 int queued;
1792
1793 tty_buffer_request_room(tty, length);
1794 queued = tty_insert_flip_string(tty, data, length);
1795 if (queued < length)
1796 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1797 __func__, length - queued);
1798 tty_flip_buffer_push(tty);
1799 }
1800
1801 static void edge_bulk_out_callback(struct urb *urb)
1802 {
1803 struct usb_serial_port *port = urb->context;
1804 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1805 int status = urb->status;
1806 struct tty_struct *tty;
1807
1808 dbg("%s - port %d", __func__, port->number);
1809
1810 edge_port->ep_write_urb_in_use = 0;
1811
1812 switch (status) {
1813 case 0:
1814 /* success */
1815 break;
1816 case -ECONNRESET:
1817 case -ENOENT:
1818 case -ESHUTDOWN:
1819 /* this urb is terminated, clean up */
1820 dbg("%s - urb shutting down with status: %d",
1821 __func__, status);
1822 return;
1823 default:
1824 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1825 "received: %d\n", __func__, status);
1826 }
1827
1828 /* send any buffered data */
1829 tty = tty_port_tty_get(&port->port);
1830 edge_send(tty);
1831 tty_kref_put(tty);
1832 }
1833
1834 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1835 {
1836 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1837 struct edgeport_serial *edge_serial;
1838 struct usb_device *dev;
1839 struct urb *urb;
1840 int port_number;
1841 int status;
1842 u16 open_settings;
1843 u8 transaction_timeout;
1844
1845 dbg("%s - port %d", __func__, port->number);
1846
1847 if (edge_port == NULL)
1848 return -ENODEV;
1849
1850 port_number = port->number - port->serial->minor;
1851 switch (port_number) {
1852 case 0:
1853 edge_port->uart_base = UMPMEM_BASE_UART1;
1854 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1855 break;
1856 case 1:
1857 edge_port->uart_base = UMPMEM_BASE_UART2;
1858 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1859 break;
1860 default:
1861 dev_err(&port->dev, "Unknown port number!!!\n");
1862 return -ENODEV;
1863 }
1864
1865 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1866 __func__, port_number, edge_port->uart_base,
1867 edge_port->dma_address);
1868
1869 dev = port->serial->dev;
1870
1871 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1872 init_waitqueue_head(&edge_port->delta_msr_wait);
1873
1874 /* turn off loopback */
1875 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1876 if (status) {
1877 dev_err(&port->dev,
1878 "%s - cannot send clear loopback command, %d\n",
1879 __func__, status);
1880 return status;
1881 }
1882
1883 /* set up the port settings */
1884 if (tty)
1885 edge_set_termios(tty, port, tty->termios);
1886
1887 /* open up the port */
1888
1889 /* milliseconds to timeout for DMA transfer */
1890 transaction_timeout = 2;
1891
1892 edge_port->ump_read_timeout =
1893 max(20, ((transaction_timeout * 3) / 2));
1894
1895 /* milliseconds to timeout for DMA transfer */
1896 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1897 UMP_PIPE_TRANS_TIMEOUT_ENA |
1898 (transaction_timeout << 2));
1899
1900 dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1901
1902 /* Tell TI to open and start the port */
1903 status = send_cmd(dev, UMPC_OPEN_PORT,
1904 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1905 if (status) {
1906 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1907 __func__, status);
1908 return status;
1909 }
1910
1911 /* Start the DMA? */
1912 status = send_cmd(dev, UMPC_START_PORT,
1913 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1914 if (status) {
1915 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1916 __func__, status);
1917 return status;
1918 }
1919
1920 /* Clear TX and RX buffers in UMP */
1921 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1922 if (status) {
1923 dev_err(&port->dev,
1924 "%s - cannot send clear buffers command, %d\n",
1925 __func__, status);
1926 return status;
1927 }
1928
1929 /* Read Initial MSR */
1930 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1931 (__u16)(UMPM_UART1_PORT + port_number),
1932 &edge_port->shadow_msr, 1);
1933 if (status) {
1934 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1935 __func__, status);
1936 return status;
1937 }
1938
1939 dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1940
1941 /* Set Initial MCR */
1942 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1943 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1944
1945 edge_serial = edge_port->edge_serial;
1946 if (mutex_lock_interruptible(&edge_serial->es_lock))
1947 return -ERESTARTSYS;
1948 if (edge_serial->num_ports_open == 0) {
1949 /* we are the first port to open, post the interrupt urb */
1950 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1951 if (!urb) {
1952 dev_err(&port->dev,
1953 "%s - no interrupt urb present, exiting\n",
1954 __func__);
1955 status = -EINVAL;
1956 goto release_es_lock;
1957 }
1958 urb->complete = edge_interrupt_callback;
1959 urb->context = edge_serial;
1960 urb->dev = dev;
1961 status = usb_submit_urb(urb, GFP_KERNEL);
1962 if (status) {
1963 dev_err(&port->dev,
1964 "%s - usb_submit_urb failed with value %d\n",
1965 __func__, status);
1966 goto release_es_lock;
1967 }
1968 }
1969
1970 /*
1971 * reset the data toggle on the bulk endpoints to work around bug in
1972 * host controllers where things get out of sync some times
1973 */
1974 usb_clear_halt(dev, port->write_urb->pipe);
1975 usb_clear_halt(dev, port->read_urb->pipe);
1976
1977 /* start up our bulk read urb */
1978 urb = port->read_urb;
1979 if (!urb) {
1980 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1981 __func__);
1982 status = -EINVAL;
1983 goto unlink_int_urb;
1984 }
1985 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1986 urb->complete = edge_bulk_in_callback;
1987 urb->context = edge_port;
1988 urb->dev = dev;
1989 status = usb_submit_urb(urb, GFP_KERNEL);
1990 if (status) {
1991 dev_err(&port->dev,
1992 "%s - read bulk usb_submit_urb failed with value %d\n",
1993 __func__, status);
1994 goto unlink_int_urb;
1995 }
1996
1997 ++edge_serial->num_ports_open;
1998
1999 dbg("%s - exited", __func__);
2000
2001 goto release_es_lock;
2002
2003 unlink_int_urb:
2004 if (edge_port->edge_serial->num_ports_open == 0)
2005 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2006 release_es_lock:
2007 mutex_unlock(&edge_serial->es_lock);
2008 return status;
2009 }
2010
2011 static void edge_close(struct usb_serial_port *port)
2012 {
2013 struct edgeport_serial *edge_serial;
2014 struct edgeport_port *edge_port;
2015 int port_number;
2016 int status;
2017
2018 dbg("%s - port %d", __func__, port->number);
2019
2020 edge_serial = usb_get_serial_data(port->serial);
2021 edge_port = usb_get_serial_port_data(port);
2022 if (edge_serial == NULL || edge_port == NULL)
2023 return;
2024
2025 /* The bulkreadcompletion routine will check
2026 * this flag and dump add read data */
2027 edge_port->close_pending = 1;
2028
2029 /* chase the port close and flush */
2030 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2031
2032 usb_kill_urb(port->read_urb);
2033 usb_kill_urb(port->write_urb);
2034 edge_port->ep_write_urb_in_use = 0;
2035
2036 /* assuming we can still talk to the device,
2037 * send a close port command to it */
2038 dbg("%s - send umpc_close_port", __func__);
2039 port_number = port->number - port->serial->minor;
2040 status = send_cmd(port->serial->dev,
2041 UMPC_CLOSE_PORT,
2042 (__u8)(UMPM_UART1_PORT + port_number),
2043 0,
2044 NULL,
2045 0);
2046 mutex_lock(&edge_serial->es_lock);
2047 --edge_port->edge_serial->num_ports_open;
2048 if (edge_port->edge_serial->num_ports_open <= 0) {
2049 /* last port is now closed, let's shut down our interrupt urb */
2050 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2051 edge_port->edge_serial->num_ports_open = 0;
2052 }
2053 mutex_unlock(&edge_serial->es_lock);
2054 edge_port->close_pending = 0;
2055
2056 dbg("%s - exited", __func__);
2057 }
2058
2059 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2060 const unsigned char *data, int count)
2061 {
2062 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2063 unsigned long flags;
2064
2065 dbg("%s - port %d", __func__, port->number);
2066
2067 if (count == 0) {
2068 dbg("%s - write request of 0 bytes", __func__);
2069 return 0;
2070 }
2071
2072 if (edge_port == NULL)
2073 return -ENODEV;
2074 if (edge_port->close_pending == 1)
2075 return -ENODEV;
2076
2077 spin_lock_irqsave(&edge_port->ep_lock, flags);
2078 count = edge_buf_put(edge_port->ep_out_buf, data, count);
2079 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2080
2081 edge_send(tty);
2082
2083 return count;
2084 }
2085
2086 static void edge_send(struct tty_struct *tty)
2087 {
2088 struct usb_serial_port *port = tty->driver_data;
2089 int count, result;
2090 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2091 unsigned long flags;
2092
2093
2094 dbg("%s - port %d", __func__, port->number);
2095
2096 spin_lock_irqsave(&edge_port->ep_lock, flags);
2097
2098 if (edge_port->ep_write_urb_in_use) {
2099 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2100 return;
2101 }
2102
2103 count = edge_buf_get(edge_port->ep_out_buf,
2104 port->write_urb->transfer_buffer,
2105 port->bulk_out_size);
2106
2107 if (count == 0) {
2108 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2109 return;
2110 }
2111
2112 edge_port->ep_write_urb_in_use = 1;
2113
2114 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2115
2116 usb_serial_debug_data(debug, &port->dev, __func__, count,
2117 port->write_urb->transfer_buffer);
2118
2119 /* set up our urb */
2120 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
2121 usb_sndbulkpipe(port->serial->dev,
2122 port->bulk_out_endpointAddress),
2123 port->write_urb->transfer_buffer, count,
2124 edge_bulk_out_callback,
2125 port);
2126
2127 /* send the data out the bulk port */
2128 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2129 if (result) {
2130 dev_err(&port->dev,
2131 "%s - failed submitting write urb, error %d\n",
2132 __func__, result);
2133 edge_port->ep_write_urb_in_use = 0;
2134 /* TODO: reschedule edge_send */
2135 } else
2136 edge_port->icount.tx += count;
2137
2138 /* wakeup any process waiting for writes to complete */
2139 /* there is now more room in the buffer for new writes */
2140 if (tty)
2141 tty_wakeup(tty);
2142 }
2143
2144 static int edge_write_room(struct tty_struct *tty)
2145 {
2146 struct usb_serial_port *port = tty->driver_data;
2147 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2148 int room = 0;
2149 unsigned long flags;
2150
2151 dbg("%s - port %d", __func__, port->number);
2152
2153 if (edge_port == NULL)
2154 return 0;
2155 if (edge_port->close_pending == 1)
2156 return 0;
2157
2158 spin_lock_irqsave(&edge_port->ep_lock, flags);
2159 room = edge_buf_space_avail(edge_port->ep_out_buf);
2160 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2161
2162 dbg("%s - returns %d", __func__, room);
2163 return room;
2164 }
2165
2166 static int edge_chars_in_buffer(struct tty_struct *tty)
2167 {
2168 struct usb_serial_port *port = tty->driver_data;
2169 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2170 int chars = 0;
2171 unsigned long flags;
2172
2173 dbg("%s - port %d", __func__, port->number);
2174
2175 if (edge_port == NULL)
2176 return 0;
2177 if (edge_port->close_pending == 1)
2178 return 0;
2179
2180 spin_lock_irqsave(&edge_port->ep_lock, flags);
2181 chars = edge_buf_data_avail(edge_port->ep_out_buf);
2182 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2183
2184 dbg("%s - returns %d", __func__, chars);
2185 return chars;
2186 }
2187
2188 static void edge_throttle(struct tty_struct *tty)
2189 {
2190 struct usb_serial_port *port = tty->driver_data;
2191 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2192 int status;
2193
2194 dbg("%s - port %d", __func__, port->number);
2195
2196 if (edge_port == NULL)
2197 return;
2198
2199 /* if we are implementing XON/XOFF, send the stop character */
2200 if (I_IXOFF(tty)) {
2201 unsigned char stop_char = STOP_CHAR(tty);
2202 status = edge_write(tty, port, &stop_char, 1);
2203 if (status <= 0) {
2204 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2205 }
2206 }
2207
2208 /* if we are implementing RTS/CTS, stop reads */
2209 /* and the Edgeport will clear the RTS line */
2210 if (C_CRTSCTS(tty))
2211 stop_read(edge_port);
2212
2213 }
2214
2215 static void edge_unthrottle(struct tty_struct *tty)
2216 {
2217 struct usb_serial_port *port = tty->driver_data;
2218 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2219 int status;
2220
2221 dbg("%s - port %d", __func__, port->number);
2222
2223 if (edge_port == NULL)
2224 return;
2225
2226 /* if we are implementing XON/XOFF, send the start character */
2227 if (I_IXOFF(tty)) {
2228 unsigned char start_char = START_CHAR(tty);
2229 status = edge_write(tty, port, &start_char, 1);
2230 if (status <= 0) {
2231 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2232 }
2233 }
2234 /* if we are implementing RTS/CTS, restart reads */
2235 /* are the Edgeport will assert the RTS line */
2236 if (C_CRTSCTS(tty)) {
2237 status = restart_read(edge_port);
2238 if (status)
2239 dev_err(&port->dev,
2240 "%s - read bulk usb_submit_urb failed: %d\n",
2241 __func__, status);
2242 }
2243
2244 }
2245
2246 static void stop_read(struct edgeport_port *edge_port)
2247 {
2248 unsigned long flags;
2249
2250 spin_lock_irqsave(&edge_port->ep_lock, flags);
2251
2252 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2253 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2254 edge_port->shadow_mcr &= ~MCR_RTS;
2255
2256 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2257 }
2258
2259 static int restart_read(struct edgeport_port *edge_port)
2260 {
2261 struct urb *urb;
2262 int status = 0;
2263 unsigned long flags;
2264
2265 spin_lock_irqsave(&edge_port->ep_lock, flags);
2266
2267 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2268 urb = edge_port->port->read_urb;
2269 urb->complete = edge_bulk_in_callback;
2270 urb->context = edge_port;
2271 urb->dev = edge_port->port->serial->dev;
2272 status = usb_submit_urb(urb, GFP_ATOMIC);
2273 }
2274 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2275 edge_port->shadow_mcr |= MCR_RTS;
2276
2277 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2278
2279 return status;
2280 }
2281
2282 static void change_port_settings(struct tty_struct *tty,
2283 struct edgeport_port *edge_port, struct ktermios *old_termios)
2284 {
2285 struct ump_uart_config *config;
2286 int baud;
2287 unsigned cflag;
2288 int status;
2289 int port_number = edge_port->port->number -
2290 edge_port->port->serial->minor;
2291
2292 dbg("%s - port %d", __func__, edge_port->port->number);
2293
2294 config = kmalloc (sizeof (*config), GFP_KERNEL);
2295 if (!config) {
2296 *tty->termios = *old_termios;
2297 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2298 __func__);
2299 return;
2300 }
2301
2302 cflag = tty->termios->c_cflag;
2303
2304 config->wFlags = 0;
2305
2306 /* These flags must be set */
2307 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2308 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2309 config->bUartMode = (__u8)(edge_port->bUartMode);
2310
2311 switch (cflag & CSIZE) {
2312 case CS5:
2313 config->bDataBits = UMP_UART_CHAR5BITS;
2314 dbg("%s - data bits = 5", __func__);
2315 break;
2316 case CS6:
2317 config->bDataBits = UMP_UART_CHAR6BITS;
2318 dbg("%s - data bits = 6", __func__);
2319 break;
2320 case CS7:
2321 config->bDataBits = UMP_UART_CHAR7BITS;
2322 dbg("%s - data bits = 7", __func__);
2323 break;
2324 default:
2325 case CS8:
2326 config->bDataBits = UMP_UART_CHAR8BITS;
2327 dbg("%s - data bits = 8", __func__);
2328 break;
2329 }
2330
2331 if (cflag & PARENB) {
2332 if (cflag & PARODD) {
2333 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2334 config->bParity = UMP_UART_ODDPARITY;
2335 dbg("%s - parity = odd", __func__);
2336 } else {
2337 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2338 config->bParity = UMP_UART_EVENPARITY;
2339 dbg("%s - parity = even", __func__);
2340 }
2341 } else {
2342 config->bParity = UMP_UART_NOPARITY;
2343 dbg("%s - parity = none", __func__);
2344 }
2345
2346 if (cflag & CSTOPB) {
2347 config->bStopBits = UMP_UART_STOPBIT2;
2348 dbg("%s - stop bits = 2", __func__);
2349 } else {
2350 config->bStopBits = UMP_UART_STOPBIT1;
2351 dbg("%s - stop bits = 1", __func__);
2352 }
2353
2354 /* figure out the flow control settings */
2355 if (cflag & CRTSCTS) {
2356 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2357 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2358 dbg("%s - RTS/CTS is enabled", __func__);
2359 } else {
2360 dbg("%s - RTS/CTS is disabled", __func__);
2361 tty->hw_stopped = 0;
2362 restart_read(edge_port);
2363 }
2364
2365 /* if we are implementing XON/XOFF, set the start and stop
2366 character in the device */
2367 config->cXon = START_CHAR(tty);
2368 config->cXoff = STOP_CHAR(tty);
2369
2370 /* if we are implementing INBOUND XON/XOFF */
2371 if (I_IXOFF(tty)) {
2372 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2373 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2374 __func__, config->cXon, config->cXoff);
2375 } else
2376 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2377
2378 /* if we are implementing OUTBOUND XON/XOFF */
2379 if (I_IXON(tty)) {
2380 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2381 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2382 __func__, config->cXon, config->cXoff);
2383 } else
2384 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2385
2386 tty->termios->c_cflag &= ~CMSPAR;
2387
2388 /* Round the baud rate */
2389 baud = tty_get_baud_rate(tty);
2390 if (!baud) {
2391 /* pick a default, any default... */
2392 baud = 9600;
2393 } else
2394 tty_encode_baud_rate(tty, baud, baud);
2395
2396 edge_port->baud_rate = baud;
2397 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2398
2399 /* FIXME: Recompute actual baud from divisor here */
2400
2401 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2402 config->wBaudRate);
2403
2404 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate));
2405 dbg("wFlags: 0x%x", config->wFlags);
2406 dbg("bDataBits: %d", config->bDataBits);
2407 dbg("bParity: %d", config->bParity);
2408 dbg("bStopBits: %d", config->bStopBits);
2409 dbg("cXon: %d", config->cXon);
2410 dbg("cXoff: %d", config->cXoff);
2411 dbg("bUartMode: %d", config->bUartMode);
2412
2413 /* move the word values into big endian mode */
2414 cpu_to_be16s(&config->wFlags);
2415 cpu_to_be16s(&config->wBaudRate);
2416
2417 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2418 (__u8)(UMPM_UART1_PORT + port_number),
2419 0, (__u8 *)config, sizeof(*config));
2420 if (status)
2421 dbg("%s - error %d when trying to write config to device",
2422 __func__, status);
2423 kfree(config);
2424 return;
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 return;
2446 }
2447
2448 static int edge_tiocmset(struct tty_struct *tty, struct file *file,
2449 unsigned int set, unsigned int clear)
2450 {
2451 struct usb_serial_port *port = tty->driver_data;
2452 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2453 unsigned int mcr;
2454 unsigned long flags;
2455
2456 dbg("%s - port %d", __func__, port->number);
2457
2458 spin_lock_irqsave(&edge_port->ep_lock, flags);
2459 mcr = edge_port->shadow_mcr;
2460 if (set & TIOCM_RTS)
2461 mcr |= MCR_RTS;
2462 if (set & TIOCM_DTR)
2463 mcr |= MCR_DTR;
2464 if (set & TIOCM_LOOP)
2465 mcr |= MCR_LOOPBACK;
2466
2467 if (clear & TIOCM_RTS)
2468 mcr &= ~MCR_RTS;
2469 if (clear & TIOCM_DTR)
2470 mcr &= ~MCR_DTR;
2471 if (clear & TIOCM_LOOP)
2472 mcr &= ~MCR_LOOPBACK;
2473
2474 edge_port->shadow_mcr = mcr;
2475 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2476
2477 restore_mcr(edge_port, mcr);
2478 return 0;
2479 }
2480
2481 static int edge_tiocmget(struct tty_struct *tty, struct file *file)
2482 {
2483 struct usb_serial_port *port = tty->driver_data;
2484 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2485 unsigned int result = 0;
2486 unsigned int msr;
2487 unsigned int mcr;
2488 unsigned long flags;
2489
2490 dbg("%s - port %d", __func__, port->number);
2491
2492 spin_lock_irqsave(&edge_port->ep_lock, flags);
2493
2494 msr = edge_port->shadow_msr;
2495 mcr = edge_port->shadow_mcr;
2496 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2497 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2498 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2499 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2500 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2501 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2502
2503
2504 dbg("%s -- %x", __func__, result);
2505 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2506
2507 return result;
2508 }
2509
2510 static int get_serial_info(struct edgeport_port *edge_port,
2511 struct serial_struct __user *retinfo)
2512 {
2513 struct serial_struct tmp;
2514
2515 if (!retinfo)
2516 return -EFAULT;
2517
2518 memset(&tmp, 0, sizeof(tmp));
2519
2520 tmp.type = PORT_16550A;
2521 tmp.line = edge_port->port->serial->minor;
2522 tmp.port = edge_port->port->number;
2523 tmp.irq = 0;
2524 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2525 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2526 tmp.baud_base = 9600;
2527 tmp.close_delay = 5*HZ;
2528 tmp.closing_wait = closing_wait;
2529
2530 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2531 return -EFAULT;
2532 return 0;
2533 }
2534
2535 static int edge_ioctl(struct tty_struct *tty, struct file *file,
2536 unsigned int cmd, unsigned long arg)
2537 {
2538 struct usb_serial_port *port = tty->driver_data;
2539 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2540 struct async_icount cnow;
2541 struct async_icount cprev;
2542
2543 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2544
2545 switch (cmd) {
2546 case TIOCGSERIAL:
2547 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2548 return get_serial_info(edge_port,
2549 (struct serial_struct __user *) arg);
2550 case TIOCMIWAIT:
2551 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2552 cprev = edge_port->icount;
2553 while (1) {
2554 interruptible_sleep_on(&edge_port->delta_msr_wait);
2555 /* see if a signal did it */
2556 if (signal_pending(current))
2557 return -ERESTARTSYS;
2558 cnow = edge_port->icount;
2559 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2560 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2561 return -EIO; /* no change => error */
2562 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2563 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2564 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2565 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2566 return 0;
2567 }
2568 cprev = cnow;
2569 }
2570 /* not reached */
2571 break;
2572 case TIOCGICOUNT:
2573 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__,
2574 port->number, edge_port->icount.rx, edge_port->icount.tx);
2575 if (copy_to_user((void __user *)arg, &edge_port->icount,
2576 sizeof(edge_port->icount)))
2577 return -EFAULT;
2578 return 0;
2579 }
2580 return -ENOIOCTLCMD;
2581 }
2582
2583 static void edge_break(struct tty_struct *tty, int break_state)
2584 {
2585 struct usb_serial_port *port = tty->driver_data;
2586 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2587 int status;
2588 int bv = 0; /* Off */
2589
2590 dbg("%s - state = %d", __func__, break_state);
2591
2592 /* chase the port close */
2593 chase_port(edge_port, 0, 0);
2594
2595 if (break_state == -1)
2596 bv = 1; /* On */
2597 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2598 if (status)
2599 dbg("%s - error %d sending break set/clear command.",
2600 __func__, status);
2601 }
2602
2603 static int edge_startup(struct usb_serial *serial)
2604 {
2605 struct edgeport_serial *edge_serial;
2606 struct edgeport_port *edge_port;
2607 struct usb_device *dev;
2608 int status;
2609 int i;
2610
2611 dev = serial->dev;
2612
2613 /* create our private serial structure */
2614 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2615 if (edge_serial == NULL) {
2616 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2617 return -ENOMEM;
2618 }
2619 mutex_init(&edge_serial->es_lock);
2620 edge_serial->serial = serial;
2621 usb_set_serial_data(serial, edge_serial);
2622
2623 status = download_fw(edge_serial);
2624 if (status) {
2625 kfree(edge_serial);
2626 return status;
2627 }
2628
2629 /* set up our port private structures */
2630 for (i = 0; i < serial->num_ports; ++i) {
2631 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2632 if (edge_port == NULL) {
2633 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2634 __func__);
2635 goto cleanup;
2636 }
2637 spin_lock_init(&edge_port->ep_lock);
2638 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2639 if (edge_port->ep_out_buf == NULL) {
2640 dev_err(&serial->dev->dev, "%s - Out of memory\n",
2641 __func__);
2642 kfree(edge_port);
2643 goto cleanup;
2644 }
2645 edge_port->port = serial->port[i];
2646 edge_port->edge_serial = edge_serial;
2647 usb_set_serial_port_data(serial->port[i], edge_port);
2648 edge_port->bUartMode = default_uart_mode;
2649 }
2650
2651 return 0;
2652
2653 cleanup:
2654 for (--i; i >= 0; --i) {
2655 edge_port = usb_get_serial_port_data(serial->port[i]);
2656 edge_buf_free(edge_port->ep_out_buf);
2657 kfree(edge_port);
2658 usb_set_serial_port_data(serial->port[i], NULL);
2659 }
2660 kfree(edge_serial);
2661 usb_set_serial_data(serial, NULL);
2662 return -ENOMEM;
2663 }
2664
2665 static void edge_disconnect(struct usb_serial *serial)
2666 {
2667 int i;
2668 struct edgeport_port *edge_port;
2669
2670 dbg("%s", __func__);
2671
2672 for (i = 0; i < serial->num_ports; ++i) {
2673 edge_port = usb_get_serial_port_data(serial->port[i]);
2674 edge_remove_sysfs_attrs(edge_port->port);
2675 }
2676 }
2677
2678 static void edge_release(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_buf_free(edge_port->ep_out_buf);
2688 kfree(edge_port);
2689 }
2690 kfree(usb_get_serial_data(serial));
2691 }
2692
2693
2694 /* Sysfs Attributes */
2695
2696 static ssize_t show_uart_mode(struct device *dev,
2697 struct device_attribute *attr, char *buf)
2698 {
2699 struct usb_serial_port *port = to_usb_serial_port(dev);
2700 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2701
2702 return sprintf(buf, "%d\n", edge_port->bUartMode);
2703 }
2704
2705 static ssize_t store_uart_mode(struct device *dev,
2706 struct device_attribute *attr, const char *valbuf, size_t count)
2707 {
2708 struct usb_serial_port *port = to_usb_serial_port(dev);
2709 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2710 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2711
2712 dbg("%s: setting uart_mode = %d", __func__, v);
2713
2714 if (v < 256)
2715 edge_port->bUartMode = v;
2716 else
2717 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2718
2719 return count;
2720 }
2721
2722 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2723 store_uart_mode);
2724
2725 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2726 {
2727 return device_create_file(&port->dev, &dev_attr_uart_mode);
2728 }
2729
2730 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2731 {
2732 device_remove_file(&port->dev, &dev_attr_uart_mode);
2733 return 0;
2734 }
2735
2736
2737 /* Circular Buffer */
2738
2739 /*
2740 * edge_buf_alloc
2741 *
2742 * Allocate a circular buffer and all associated memory.
2743 */
2744
2745 static struct edge_buf *edge_buf_alloc(unsigned int size)
2746 {
2747 struct edge_buf *eb;
2748
2749
2750 if (size == 0)
2751 return NULL;
2752
2753 eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2754 if (eb == NULL)
2755 return NULL;
2756
2757 eb->buf_buf = kmalloc(size, GFP_KERNEL);
2758 if (eb->buf_buf == NULL) {
2759 kfree(eb);
2760 return NULL;
2761 }
2762
2763 eb->buf_size = size;
2764 eb->buf_get = eb->buf_put = eb->buf_buf;
2765
2766 return eb;
2767 }
2768
2769
2770 /*
2771 * edge_buf_free
2772 *
2773 * Free the buffer and all associated memory.
2774 */
2775
2776 static void edge_buf_free(struct edge_buf *eb)
2777 {
2778 if (eb) {
2779 kfree(eb->buf_buf);
2780 kfree(eb);
2781 }
2782 }
2783
2784
2785 /*
2786 * edge_buf_clear
2787 *
2788 * Clear out all data in the circular buffer.
2789 */
2790
2791 static void edge_buf_clear(struct edge_buf *eb)
2792 {
2793 if (eb != NULL)
2794 eb->buf_get = eb->buf_put;
2795 /* equivalent to a get of all data available */
2796 }
2797
2798
2799 /*
2800 * edge_buf_data_avail
2801 *
2802 * Return the number of bytes of data available in the circular
2803 * buffer.
2804 */
2805
2806 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2807 {
2808 if (eb == NULL)
2809 return 0;
2810 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2811 }
2812
2813
2814 /*
2815 * edge_buf_space_avail
2816 *
2817 * Return the number of bytes of space available in the circular
2818 * buffer.
2819 */
2820
2821 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2822 {
2823 if (eb == NULL)
2824 return 0;
2825 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2826 }
2827
2828
2829 /*
2830 * edge_buf_put
2831 *
2832 * Copy data data from a user buffer and put it into the circular buffer.
2833 * Restrict to the amount of space available.
2834 *
2835 * Return the number of bytes copied.
2836 */
2837
2838 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2839 unsigned int count)
2840 {
2841 unsigned int len;
2842
2843
2844 if (eb == NULL)
2845 return 0;
2846
2847 len = edge_buf_space_avail(eb);
2848 if (count > len)
2849 count = len;
2850
2851 if (count == 0)
2852 return 0;
2853
2854 len = eb->buf_buf + eb->buf_size - eb->buf_put;
2855 if (count > len) {
2856 memcpy(eb->buf_put, buf, len);
2857 memcpy(eb->buf_buf, buf+len, count - len);
2858 eb->buf_put = eb->buf_buf + count - len;
2859 } else {
2860 memcpy(eb->buf_put, buf, count);
2861 if (count < len)
2862 eb->buf_put += count;
2863 else /* count == len */
2864 eb->buf_put = eb->buf_buf;
2865 }
2866
2867 return count;
2868 }
2869
2870
2871 /*
2872 * edge_buf_get
2873 *
2874 * Get data from the circular buffer and copy to the given buffer.
2875 * Restrict to the amount of data available.
2876 *
2877 * Return the number of bytes copied.
2878 */
2879
2880 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2881 unsigned int count)
2882 {
2883 unsigned int len;
2884
2885
2886 if (eb == NULL)
2887 return 0;
2888
2889 len = edge_buf_data_avail(eb);
2890 if (count > len)
2891 count = len;
2892
2893 if (count == 0)
2894 return 0;
2895
2896 len = eb->buf_buf + eb->buf_size - eb->buf_get;
2897 if (count > len) {
2898 memcpy(buf, eb->buf_get, len);
2899 memcpy(buf+len, eb->buf_buf, count - len);
2900 eb->buf_get = eb->buf_buf + count - len;
2901 } else {
2902 memcpy(buf, eb->buf_get, count);
2903 if (count < len)
2904 eb->buf_get += count;
2905 else /* count == len */
2906 eb->buf_get = eb->buf_buf;
2907 }
2908
2909 return count;
2910 }
2911
2912
2913 static struct usb_serial_driver edgeport_1port_device = {
2914 .driver = {
2915 .owner = THIS_MODULE,
2916 .name = "edgeport_ti_1",
2917 },
2918 .description = "Edgeport TI 1 port adapter",
2919 .usb_driver = &io_driver,
2920 .id_table = edgeport_1port_id_table,
2921 .num_ports = 1,
2922 .open = edge_open,
2923 .close = edge_close,
2924 .throttle = edge_throttle,
2925 .unthrottle = edge_unthrottle,
2926 .attach = edge_startup,
2927 .disconnect = edge_disconnect,
2928 .release = edge_release,
2929 .port_probe = edge_create_sysfs_attrs,
2930 .ioctl = edge_ioctl,
2931 .set_termios = edge_set_termios,
2932 .tiocmget = edge_tiocmget,
2933 .tiocmset = edge_tiocmset,
2934 .write = edge_write,
2935 .write_room = edge_write_room,
2936 .chars_in_buffer = edge_chars_in_buffer,
2937 .break_ctl = edge_break,
2938 .read_int_callback = edge_interrupt_callback,
2939 .read_bulk_callback = edge_bulk_in_callback,
2940 .write_bulk_callback = edge_bulk_out_callback,
2941 };
2942
2943 static struct usb_serial_driver edgeport_2port_device = {
2944 .driver = {
2945 .owner = THIS_MODULE,
2946 .name = "edgeport_ti_2",
2947 },
2948 .description = "Edgeport TI 2 port adapter",
2949 .usb_driver = &io_driver,
2950 .id_table = edgeport_2port_id_table,
2951 .num_ports = 2,
2952 .open = edge_open,
2953 .close = edge_close,
2954 .throttle = edge_throttle,
2955 .unthrottle = edge_unthrottle,
2956 .attach = edge_startup,
2957 .disconnect = edge_disconnect,
2958 .release = edge_release,
2959 .port_probe = edge_create_sysfs_attrs,
2960 .ioctl = edge_ioctl,
2961 .set_termios = edge_set_termios,
2962 .tiocmget = edge_tiocmget,
2963 .tiocmset = edge_tiocmset,
2964 .write = edge_write,
2965 .write_room = edge_write_room,
2966 .chars_in_buffer = edge_chars_in_buffer,
2967 .break_ctl = edge_break,
2968 .read_int_callback = edge_interrupt_callback,
2969 .read_bulk_callback = edge_bulk_in_callback,
2970 .write_bulk_callback = edge_bulk_out_callback,
2971 };
2972
2973
2974 static int __init edgeport_init(void)
2975 {
2976 int retval;
2977 retval = usb_serial_register(&edgeport_1port_device);
2978 if (retval)
2979 goto failed_1port_device_register;
2980 retval = usb_serial_register(&edgeport_2port_device);
2981 if (retval)
2982 goto failed_2port_device_register;
2983 retval = usb_register(&io_driver);
2984 if (retval)
2985 goto failed_usb_register;
2986 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
2987 DRIVER_DESC "\n");
2988 return 0;
2989 failed_usb_register:
2990 usb_serial_deregister(&edgeport_2port_device);
2991 failed_2port_device_register:
2992 usb_serial_deregister(&edgeport_1port_device);
2993 failed_1port_device_register:
2994 return retval;
2995 }
2996
2997 static void __exit edgeport_exit(void)
2998 {
2999 usb_deregister(&io_driver);
3000 usb_serial_deregister(&edgeport_1port_device);
3001 usb_serial_deregister(&edgeport_2port_device);
3002 }
3003
3004 module_init(edgeport_init);
3005 module_exit(edgeport_exit);
3006
3007 /* Module information */
3008 MODULE_AUTHOR(DRIVER_AUTHOR);
3009 MODULE_DESCRIPTION(DRIVER_DESC);
3010 MODULE_LICENSE("GPL");
3011 MODULE_FIRMWARE("edgeport/down3.bin");
3012
3013 module_param(debug, bool, S_IRUGO | S_IWUSR);
3014 MODULE_PARM_DESC(debug, "Debug enabled or not");
3015
3016 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3017 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3018
3019 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3020 MODULE_PARM_DESC(ignore_cpu_rev,
3021 "Ignore the cpu revision when connecting to a device");
3022
3023 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
3024 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux for Ginger Game Console