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