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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Edgeport USB Serial Converter driver
4 *
5 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 *
8 * Supports the following devices:
9 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
10 *
11 * For questions or problems with this driver, contact Inside Out
12 * Networks technical support, or Peter Berger <pberger@brimson.com>,
13 * or Al Borchers <alborchers@steinerpoint.com>.
14 */
15
16#include <linux/kernel.h>
17#include <linux/jiffies.h>
18#include <linux/errno.h>
19#include <linux/slab.h>
20#include <linux/tty.h>
21#include <linux/tty_driver.h>
22#include <linux/tty_flip.h>
23#include <linux/module.h>
24#include <linux/spinlock.h>
25#include <linux/mutex.h>
26#include <linux/serial.h>
27#include <linux/swab.h>
28#include <linux/kfifo.h>
29#include <linux/ioctl.h>
30#include <linux/firmware.h>
31#include <linux/uaccess.h>
32#include <linux/usb.h>
33#include <linux/usb/serial.h>
34
35#include "io_16654.h"
36#include "io_usbvend.h"
37#include "io_ti.h"
38
39#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
40#define DRIVER_DESC "Edgeport USB Serial Driver"
41
42#define EPROM_PAGE_SIZE 64
43
44
45/* different hardware types */
46#define HARDWARE_TYPE_930 0
47#define HARDWARE_TYPE_TIUMP 1
48
49/* IOCTL_PRIVATE_TI_GET_MODE Definitions */
50#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
51#define TI_MODE_BOOT 1 /* Staying in boot mode */
52#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
53#define TI_MODE_TRANSITIONING 3 /*
54 * Currently in boot mode but
55 * transitioning to download mode
56 */
57
58/* read urb state */
59#define EDGE_READ_URB_RUNNING 0
60#define EDGE_READ_URB_STOPPING 1
61#define EDGE_READ_URB_STOPPED 2
62
63
64/* Product information read from the Edgeport */
65struct product_info {
66 int TiMode; /* Current TI Mode */
67 u8 hardware_type; /* Type of hardware */
68} __packed;
69
70/*
71 * Edgeport firmware header
72 *
73 * "build_number" has been set to 0 in all three of the images I have
74 * seen, and Digi Tech Support suggests that it is safe to ignore it.
75 *
76 * "length" is the number of bytes of actual data following the header.
77 *
78 * "checksum" is the low order byte resulting from adding the values of
79 * all the data bytes.
80 */
81struct edgeport_fw_hdr {
82 u8 major_version;
83 u8 minor_version;
84 __le16 build_number;
85 __le16 length;
86 u8 checksum;
87} __packed;
88
89struct edgeport_port {
90 u16 uart_base;
91 u16 dma_address;
92 u8 shadow_msr;
93 u8 shadow_mcr;
94 u8 shadow_lsr;
95 u8 lsr_mask;
96 u32 ump_read_timeout; /*
97 * Number of milliseconds the UMP will
98 * wait without data before completing
99 * a read short
100 */
101 int baud_rate;
102 int close_pending;
103 int lsr_event;
104
105 struct edgeport_serial *edge_serial;
106 struct usb_serial_port *port;
107 u8 bUartMode; /* Port type, 0: RS232, etc. */
108 spinlock_t ep_lock;
109 int ep_read_urb_state;
110 int ep_write_urb_in_use;
111};
112
113struct edgeport_serial {
114 struct product_info product_info;
115 u8 TI_I2C_Type; /* Type of I2C in UMP */
116 u8 TiReadI2C; /*
117 * Set to TRUE if we have read the
118 * I2c in Boot Mode
119 */
120 struct mutex es_lock;
121 int num_ports_open;
122 struct usb_serial *serial;
123 struct delayed_work heartbeat_work;
124 int fw_version;
125 bool use_heartbeat;
126};
127
128
129/* Devices that this driver supports */
130static const struct usb_device_id edgeport_1port_id_table[] = {
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
147 { }
148};
149
150static const struct usb_device_id edgeport_2port_id_table[] = {
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
163 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) },
170 { }
171};
172
173/* Devices that this driver supports */
174static const struct usb_device_id id_table_combined[] = {
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) },
209 { }
210};
211
212MODULE_DEVICE_TABLE(usb, id_table_combined);
213
214static bool ignore_cpu_rev;
215static int default_uart_mode; /* RS232 */
216
217static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
218 int length);
219
220static void stop_read(struct edgeport_port *edge_port);
221static int restart_read(struct edgeport_port *edge_port);
222
223static void edge_set_termios(struct tty_struct *tty,
224 struct usb_serial_port *port,
225 const struct ktermios *old_termios);
226static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
227
228static int do_download_mode(struct edgeport_serial *serial,
229 const struct firmware *fw);
230static int do_boot_mode(struct edgeport_serial *serial,
231 const struct firmware *fw);
232
233/* sysfs attributes */
234static int edge_create_sysfs_attrs(struct usb_serial_port *port);
235static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
236
237/*
238 * Some release of Edgeport firmware "down3.bin" after version 4.80
239 * introduced code to automatically disconnect idle devices on some
240 * Edgeport models after periods of inactivity, typically ~60 seconds.
241 * This occurs without regard to whether ports on the device are open
242 * or not. Digi International Tech Support suggested:
243 *
244 * 1. Adding driver "heartbeat" code to reset the firmware timer by
245 * requesting a descriptor record every 15 seconds, which should be
246 * effective with newer firmware versions that require it, and benign
247 * with older versions that do not. In practice 40 seconds seems often
248 * enough.
249 * 2. The heartbeat code is currently required only on Edgeport/416 models.
250 */
251#define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80)
252#define FW_HEARTBEAT_SECS 40
253
254/* Timeouts in msecs: firmware downloads take longer */
255#define TI_VSEND_TIMEOUT_DEFAULT 1000
256#define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000
257
258static int ti_vread_sync(struct usb_device *dev, u8 request, u16 value,
259 u16 index, void *data, int size)
260{
261 int status;
262
263 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
264 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
265 value, index, data, size, 1000);
266 if (status < 0)
267 return status;
268 if (status != size) {
269 dev_dbg(&dev->dev, "%s - wanted to read %d, but only read %d\n",
270 __func__, size, status);
271 return -ECOMM;
272 }
273 return 0;
274}
275
276static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value,
277 u16 index, void *data, int size, int timeout)
278{
279 int status;
280
281 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
282 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
283 value, index, data, size, timeout);
284 if (status < 0)
285 return status;
286
287 return 0;
288}
289
290static int read_port_cmd(struct usb_serial_port *port, u8 command, u16 value,
291 void *data, int size)
292{
293 return ti_vread_sync(port->serial->dev, command, value,
294 UMPM_UART1_PORT + port->port_number,
295 data, size);
296}
297
298static int send_port_cmd(struct usb_serial_port *port, u8 command, u16 value,
299 void *data, int size)
300{
301 return ti_vsend_sync(port->serial->dev, command, value,
302 UMPM_UART1_PORT + port->port_number,
303 data, size, TI_VSEND_TIMEOUT_DEFAULT);
304}
305
306/* clear tx/rx buffers and fifo in TI UMP */
307static int purge_port(struct usb_serial_port *port, u16 mask)
308{
309 int port_number = port->port_number;
310
311 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
312
313 return send_port_cmd(port, UMPC_PURGE_PORT, mask, NULL, 0);
314}
315
316/**
317 * read_download_mem - Read edgeport memory from TI chip
318 * @dev: usb device pointer
319 * @start_address: Device CPU address at which to read
320 * @length: Length of above data
321 * @address_type: Can read both XDATA and I2C
322 * @buffer: pointer to input data buffer
323 */
324static int read_download_mem(struct usb_device *dev, int start_address,
325 int length, u8 address_type, u8 *buffer)
326{
327 int status = 0;
328 u8 read_length;
329 u16 be_start_address;
330
331 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
332
333 /*
334 * Read in blocks of 64 bytes
335 * (TI firmware can't handle more than 64 byte reads)
336 */
337 while (length) {
338 if (length > 64)
339 read_length = 64;
340 else
341 read_length = (u8)length;
342
343 if (read_length > 1) {
344 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
345 }
346 /*
347 * NOTE: Must use swab as wIndex is sent in little-endian
348 * byte order regardless of host byte order.
349 */
350 be_start_address = swab16((u16)start_address);
351 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
352 (u16)address_type,
353 be_start_address,
354 buffer, read_length);
355
356 if (status) {
357 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
358 return status;
359 }
360
361 if (read_length > 1)
362 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
363
364 /* Update pointers/length */
365 start_address += read_length;
366 buffer += read_length;
367 length -= read_length;
368 }
369
370 return status;
371}
372
373static int read_ram(struct usb_device *dev, int start_address,
374 int length, u8 *buffer)
375{
376 return read_download_mem(dev, start_address, length,
377 DTK_ADDR_SPACE_XDATA, buffer);
378}
379
380/* Read edgeport memory to a given block */
381static int read_boot_mem(struct edgeport_serial *serial,
382 int start_address, int length, u8 *buffer)
383{
384 int status = 0;
385 int i;
386
387 for (i = 0; i < length; i++) {
388 status = ti_vread_sync(serial->serial->dev,
389 UMPC_MEMORY_READ, serial->TI_I2C_Type,
390 (u16)(start_address+i), &buffer[i], 0x01);
391 if (status) {
392 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
393 return status;
394 }
395 }
396
397 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
398 __func__, start_address, length);
399 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
400
401 serial->TiReadI2C = 1;
402
403 return status;
404}
405
406/* Write given block to TI EPROM memory */
407static int write_boot_mem(struct edgeport_serial *serial,
408 int start_address, int length, u8 *buffer)
409{
410 int status = 0;
411 int i;
412 u8 *temp;
413
414 /* Must do a read before write */
415 if (!serial->TiReadI2C) {
416 temp = kmalloc(1, GFP_KERNEL);
417 if (!temp)
418 return -ENOMEM;
419
420 status = read_boot_mem(serial, 0, 1, temp);
421 kfree(temp);
422 if (status)
423 return status;
424 }
425
426 for (i = 0; i < length; ++i) {
427 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
428 buffer[i], (u16)(i + start_address), NULL,
429 0, TI_VSEND_TIMEOUT_DEFAULT);
430 if (status)
431 return status;
432 }
433
434 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
435 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
436
437 return status;
438}
439
440/* Write edgeport I2C memory to TI chip */
441static int write_i2c_mem(struct edgeport_serial *serial,
442 int start_address, int length, u8 address_type, u8 *buffer)
443{
444 struct device *dev = &serial->serial->dev->dev;
445 int status = 0;
446 int write_length;
447 u16 be_start_address;
448
449 /* We can only send a maximum of 1 aligned byte page at a time */
450
451 /* calculate the number of bytes left in the first page */
452 write_length = EPROM_PAGE_SIZE -
453 (start_address & (EPROM_PAGE_SIZE - 1));
454
455 if (write_length > length)
456 write_length = length;
457
458 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
459 __func__, start_address, write_length);
460 usb_serial_debug_data(dev, __func__, write_length, buffer);
461
462 /*
463 * Write first page.
464 *
465 * NOTE: Must use swab as wIndex is sent in little-endian byte order
466 * regardless of host byte order.
467 */
468 be_start_address = swab16((u16)start_address);
469 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
470 (u16)address_type, be_start_address,
471 buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT);
472 if (status) {
473 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
474 return status;
475 }
476
477 length -= write_length;
478 start_address += write_length;
479 buffer += write_length;
480
481 /*
482 * We should be aligned now -- can write max page size bytes at a
483 * time.
484 */
485 while (length) {
486 if (length > EPROM_PAGE_SIZE)
487 write_length = EPROM_PAGE_SIZE;
488 else
489 write_length = length;
490
491 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
492 __func__, start_address, write_length);
493 usb_serial_debug_data(dev, __func__, write_length, buffer);
494
495 /*
496 * Write next page.
497 *
498 * NOTE: Must use swab as wIndex is sent in little-endian byte
499 * order regardless of host byte order.
500 */
501 be_start_address = swab16((u16)start_address);
502 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
503 (u16)address_type, be_start_address, buffer,
504 write_length, TI_VSEND_TIMEOUT_DEFAULT);
505 if (status) {
506 dev_err(dev, "%s - ERROR %d\n", __func__, status);
507 return status;
508 }
509
510 length -= write_length;
511 start_address += write_length;
512 buffer += write_length;
513 }
514 return status;
515}
516
517/*
518 * Examine the UMP DMA registers and LSR
519 *
520 * Check the MSBit of the X and Y DMA byte count registers.
521 * A zero in this bit indicates that the TX DMA buffers are empty
522 * then check the TX Empty bit in the UART.
523 */
524static int tx_active(struct edgeport_port *port)
525{
526 int status;
527 struct out_endpoint_desc_block *oedb;
528 u8 *lsr;
529 int bytes_left = 0;
530
531 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
532 if (!oedb)
533 return -ENOMEM;
534
535 /*
536 * Sigh, that's right, just one byte, as not all platforms can
537 * do DMA from stack
538 */
539 lsr = kmalloc(1, GFP_KERNEL);
540 if (!lsr) {
541 kfree(oedb);
542 return -ENOMEM;
543 }
544 /* Read the DMA Count Registers */
545 status = read_ram(port->port->serial->dev, port->dma_address,
546 sizeof(*oedb), (void *)oedb);
547 if (status)
548 goto exit_is_tx_active;
549
550 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
551
552 /* and the LSR */
553 status = read_ram(port->port->serial->dev,
554 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
555
556 if (status)
557 goto exit_is_tx_active;
558 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
559
560 /* If either buffer has data or we are transmitting then return TRUE */
561 if ((oedb->XByteCount & 0x80) != 0)
562 bytes_left += 64;
563
564 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
565 bytes_left += 1;
566
567 /* We return Not Active if we get any kind of error */
568exit_is_tx_active:
569 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
570
571 kfree(lsr);
572 kfree(oedb);
573 return bytes_left;
574}
575
576static int choose_config(struct usb_device *dev)
577{
578 /*
579 * There may be multiple configurations on this device, in which case
580 * we would need to read and parse all of them to find out which one
581 * we want. However, we just support one config at this point,
582 * configuration # 1, which is Config Descriptor 0.
583 */
584
585 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
586 __func__, dev->config->desc.bNumInterfaces);
587 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
588 __func__, dev->config->desc.bMaxPower * 2);
589
590 if (dev->config->desc.bNumInterfaces != 1) {
591 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
592 return -ENODEV;
593 }
594
595 return 0;
596}
597
598static int read_rom(struct edgeport_serial *serial,
599 int start_address, int length, u8 *buffer)
600{
601 int status;
602
603 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
604 status = read_download_mem(serial->serial->dev,
605 start_address,
606 length,
607 serial->TI_I2C_Type,
608 buffer);
609 } else {
610 status = read_boot_mem(serial, start_address, length,
611 buffer);
612 }
613 return status;
614}
615
616static int write_rom(struct edgeport_serial *serial, int start_address,
617 int length, u8 *buffer)
618{
619 if (serial->product_info.TiMode == TI_MODE_BOOT)
620 return write_boot_mem(serial, start_address, length,
621 buffer);
622
623 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
624 return write_i2c_mem(serial, start_address, length,
625 serial->TI_I2C_Type, buffer);
626 return -EINVAL;
627}
628
629/* Read a descriptor header from I2C based on type */
630static int get_descriptor_addr(struct edgeport_serial *serial,
631 int desc_type, struct ti_i2c_desc *rom_desc)
632{
633 int start_address;
634 int status;
635
636 /* Search for requested descriptor in I2C */
637 start_address = 2;
638 do {
639 status = read_rom(serial,
640 start_address,
641 sizeof(struct ti_i2c_desc),
642 (u8 *)rom_desc);
643 if (status)
644 return 0;
645
646 if (rom_desc->Type == desc_type)
647 return start_address;
648
649 start_address = start_address + sizeof(struct ti_i2c_desc) +
650 le16_to_cpu(rom_desc->Size);
651
652 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
653
654 return 0;
655}
656
657/* Validate descriptor checksum */
658static int valid_csum(struct ti_i2c_desc *rom_desc, u8 *buffer)
659{
660 u16 i;
661 u8 cs = 0;
662
663 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
664 cs = (u8)(cs + buffer[i]);
665
666 if (cs != rom_desc->CheckSum) {
667 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
668 return -EINVAL;
669 }
670 return 0;
671}
672
673/* Make sure that the I2C image is good */
674static int check_i2c_image(struct edgeport_serial *serial)
675{
676 struct device *dev = &serial->serial->dev->dev;
677 int status = 0;
678 struct ti_i2c_desc *rom_desc;
679 int start_address = 2;
680 u8 *buffer;
681 u16 ttype;
682
683 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
684 if (!rom_desc)
685 return -ENOMEM;
686
687 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
688 if (!buffer) {
689 kfree(rom_desc);
690 return -ENOMEM;
691 }
692
693 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
694 status = read_rom(serial, 0, 1, buffer);
695 if (status)
696 goto out;
697
698 if (*buffer != UMP5152 && *buffer != UMP3410) {
699 dev_err(dev, "%s - invalid buffer signature\n", __func__);
700 status = -ENODEV;
701 goto out;
702 }
703
704 do {
705 /* Validate the I2C */
706 status = read_rom(serial,
707 start_address,
708 sizeof(struct ti_i2c_desc),
709 (u8 *)rom_desc);
710 if (status)
711 break;
712
713 if ((start_address + sizeof(struct ti_i2c_desc) +
714 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
715 status = -ENODEV;
716 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
717 break;
718 }
719
720 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
721
722 /* Skip type 2 record */
723 ttype = rom_desc->Type & 0x0f;
724 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
725 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
726 /* Read the descriptor data */
727 status = read_rom(serial, start_address +
728 sizeof(struct ti_i2c_desc),
729 le16_to_cpu(rom_desc->Size),
730 buffer);
731 if (status)
732 break;
733
734 status = valid_csum(rom_desc, buffer);
735 if (status)
736 break;
737 }
738 start_address = start_address + sizeof(struct ti_i2c_desc) +
739 le16_to_cpu(rom_desc->Size);
740
741 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
742 (start_address < TI_MAX_I2C_SIZE));
743
744 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
745 (start_address > TI_MAX_I2C_SIZE))
746 status = -ENODEV;
747
748out:
749 kfree(buffer);
750 kfree(rom_desc);
751 return status;
752}
753
754static int get_manuf_info(struct edgeport_serial *serial, u8 *buffer)
755{
756 int status;
757 int start_address;
758 struct ti_i2c_desc *rom_desc;
759 struct edge_ti_manuf_descriptor *desc;
760 struct device *dev = &serial->serial->dev->dev;
761
762 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
763 if (!rom_desc)
764 return -ENOMEM;
765
766 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
767 rom_desc);
768
769 if (!start_address) {
770 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
771 status = -ENODEV;
772 goto exit;
773 }
774
775 /* Read the descriptor data */
776 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
777 le16_to_cpu(rom_desc->Size), buffer);
778 if (status)
779 goto exit;
780
781 status = valid_csum(rom_desc, buffer);
782
783 desc = (struct edge_ti_manuf_descriptor *)buffer;
784 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
785 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
786 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
787 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
788 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
789 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
790
791exit:
792 kfree(rom_desc);
793 return status;
794}
795
796/* Build firmware header used for firmware update */
797static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw)
798{
799 u8 *buffer;
800 int buffer_size;
801 int i;
802 u8 cs = 0;
803 struct ti_i2c_desc *i2c_header;
804 struct ti_i2c_image_header *img_header;
805 struct ti_i2c_firmware_rec *firmware_rec;
806 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
807
808 /*
809 * In order to update the I2C firmware we must change the type 2 record
810 * to type 0xF2. This will force the UMP to come up in Boot Mode.
811 * Then while in boot mode, the driver will download the latest
812 * firmware (padded to 15.5k) into the UMP ram. And finally when the
813 * device comes back up in download mode the driver will cause the new
814 * firmware to be copied from the UMP Ram to I2C and the firmware will
815 * update the record type from 0xf2 to 0x02.
816 */
817
818 /*
819 * Allocate a 15.5k buffer + 2 bytes for version number (Firmware
820 * Record)
821 */
822 buffer_size = (((1024 * 16) - 512 ) +
823 sizeof(struct ti_i2c_firmware_rec));
824
825 buffer = kmalloc(buffer_size, GFP_KERNEL);
826 if (!buffer)
827 return -ENOMEM;
828
829 /* Set entire image of 0xffs */
830 memset(buffer, 0xff, buffer_size);
831
832 /* Copy version number into firmware record */
833 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
834
835 firmware_rec->Ver_Major = fw_hdr->major_version;
836 firmware_rec->Ver_Minor = fw_hdr->minor_version;
837
838 /* Pointer to fw_down memory image */
839 img_header = (struct ti_i2c_image_header *)&fw->data[4];
840
841 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
842 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
843 le16_to_cpu(img_header->Length));
844
845 for (i=0; i < buffer_size; i++) {
846 cs = (u8)(cs + buffer[i]);
847 }
848
849 kfree(buffer);
850
851 /* Build new header */
852 i2c_header = (struct ti_i2c_desc *)header;
853 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
854
855 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
856 i2c_header->Size = cpu_to_le16(buffer_size);
857 i2c_header->CheckSum = cs;
858 firmware_rec->Ver_Major = fw_hdr->major_version;
859 firmware_rec->Ver_Minor = fw_hdr->minor_version;
860
861 return 0;
862}
863
864/* Try to figure out what type of I2c we have */
865static int i2c_type_bootmode(struct edgeport_serial *serial)
866{
867 struct device *dev = &serial->serial->dev->dev;
868 int status;
869 u8 *data;
870
871 data = kmalloc(1, GFP_KERNEL);
872 if (!data)
873 return -ENOMEM;
874
875 /* Try to read type 2 */
876 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
877 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
878 if (status)
879 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
880 else
881 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
882 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
883 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
884 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
885 goto out;
886 }
887
888 /* Try to read type 3 */
889 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
890 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
891 if (status)
892 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
893 else
894 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
895 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
896 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
897 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
898 goto out;
899 }
900
901 dev_dbg(dev, "%s - Unknown\n", __func__);
902 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
903 status = -ENODEV;
904out:
905 kfree(data);
906 return status;
907}
908
909static int bulk_xfer(struct usb_serial *serial, void *buffer,
910 int length, int *num_sent)
911{
912 int status;
913
914 status = usb_bulk_msg(serial->dev,
915 usb_sndbulkpipe(serial->dev,
916 serial->port[0]->bulk_out_endpointAddress),
917 buffer, length, num_sent, 1000);
918 return status;
919}
920
921/* Download given firmware image to the device (IN BOOT MODE) */
922static int download_code(struct edgeport_serial *serial, u8 *image,
923 int image_length)
924{
925 int status = 0;
926 int pos;
927 int transfer;
928 int done;
929
930 /* Transfer firmware image */
931 for (pos = 0; pos < image_length; ) {
932 /* Read the next buffer from file */
933 transfer = image_length - pos;
934 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
935 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
936
937 /* Transfer data */
938 status = bulk_xfer(serial->serial, &image[pos],
939 transfer, &done);
940 if (status)
941 break;
942 /* Advance buffer pointer */
943 pos += done;
944 }
945
946 return status;
947}
948
949/* FIXME!!! */
950static int config_boot_dev(struct usb_device *dev)
951{
952 return 0;
953}
954
955static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
956{
957 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
958}
959
960static int check_fw_sanity(struct edgeport_serial *serial,
961 const struct firmware *fw)
962{
963 u16 length_total;
964 u8 checksum = 0;
965 int pos;
966 struct device *dev = &serial->serial->interface->dev;
967 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
968
969 if (fw->size < sizeof(struct edgeport_fw_hdr)) {
970 dev_err(dev, "incomplete fw header\n");
971 return -EINVAL;
972 }
973
974 length_total = le16_to_cpu(fw_hdr->length) +
975 sizeof(struct edgeport_fw_hdr);
976
977 if (fw->size != length_total) {
978 dev_err(dev, "bad fw size (expected: %u, got: %zu)\n",
979 length_total, fw->size);
980 return -EINVAL;
981 }
982
983 for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos)
984 checksum += fw->data[pos];
985
986 if (checksum != fw_hdr->checksum) {
987 dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n",
988 fw_hdr->checksum, checksum);
989 return -EINVAL;
990 }
991
992 return 0;
993}
994
995/*
996 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
997 *
998 * This routine downloads the main operating code into the TI5052, using the
999 * boot code already burned into E2PROM or ROM.
1000 */
1001static int download_fw(struct edgeport_serial *serial)
1002{
1003 struct device *dev = &serial->serial->interface->dev;
1004 int status = 0;
1005 struct usb_interface_descriptor *interface;
1006 const struct firmware *fw;
1007 const char *fw_name = "edgeport/down3.bin";
1008 struct edgeport_fw_hdr *fw_hdr;
1009
1010 status = request_firmware(&fw, fw_name, dev);
1011 if (status) {
1012 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1013 fw_name, status);
1014 return status;
1015 }
1016
1017 if (check_fw_sanity(serial, fw)) {
1018 status = -EINVAL;
1019 goto out;
1020 }
1021
1022 fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1023
1024 /* If on-board version is newer, "fw_version" will be updated later. */
1025 serial->fw_version = (fw_hdr->major_version << 8) +
1026 fw_hdr->minor_version;
1027
1028 /*
1029 * This routine is entered by both the BOOT mode and the Download mode
1030 * We can determine which code is running by the reading the config
1031 * descriptor and if we have only one bulk pipe it is in boot mode
1032 */
1033 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1034
1035 /* Default to type 2 i2c */
1036 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1037
1038 status = choose_config(serial->serial->dev);
1039 if (status)
1040 goto out;
1041
1042 interface = &serial->serial->interface->cur_altsetting->desc;
1043 if (!interface) {
1044 dev_err(dev, "%s - no interface set, error!\n", __func__);
1045 status = -ENODEV;
1046 goto out;
1047 }
1048
1049 /*
1050 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1051 * if we have more than one endpoint we are definitely in download
1052 * mode
1053 */
1054 if (interface->bNumEndpoints > 1) {
1055 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1056 status = do_download_mode(serial, fw);
1057 } else {
1058 /* Otherwise we will remain in configuring mode */
1059 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1060 status = do_boot_mode(serial, fw);
1061 }
1062
1063out:
1064 release_firmware(fw);
1065 return status;
1066}
1067
1068static int do_download_mode(struct edgeport_serial *serial,
1069 const struct firmware *fw)
1070{
1071 struct device *dev = &serial->serial->interface->dev;
1072 int status = 0;
1073 int start_address;
1074 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1075 int download_cur_ver;
1076 int download_new_ver;
1077 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1078 struct ti_i2c_desc *rom_desc;
1079
1080 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1081
1082 status = check_i2c_image(serial);
1083 if (status) {
1084 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1085 return status;
1086 }
1087
1088 /*
1089 * Validate Hardware version number
1090 * Read Manufacturing Descriptor from TI Based Edgeport
1091 */
1092 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1093 if (!ti_manuf_desc)
1094 return -ENOMEM;
1095
1096 status = get_manuf_info(serial, (u8 *)ti_manuf_desc);
1097 if (status) {
1098 kfree(ti_manuf_desc);
1099 return status;
1100 }
1101
1102 /* Check version number of ION descriptor */
1103 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1104 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1105 __func__, ti_cpu_rev(ti_manuf_desc));
1106 kfree(ti_manuf_desc);
1107 return -EINVAL;
1108 }
1109
1110 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1111 if (!rom_desc) {
1112 kfree(ti_manuf_desc);
1113 return -ENOMEM;
1114 }
1115
1116 /* Search for type 2 record (firmware record) */
1117 start_address = get_descriptor_addr(serial,
1118 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1119 if (start_address != 0) {
1120 struct ti_i2c_firmware_rec *firmware_version;
1121 u8 *record;
1122
1123 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n",
1124 __func__);
1125
1126 firmware_version = kmalloc(sizeof(*firmware_version),
1127 GFP_KERNEL);
1128 if (!firmware_version) {
1129 kfree(rom_desc);
1130 kfree(ti_manuf_desc);
1131 return -ENOMEM;
1132 }
1133
1134 /*
1135 * Validate version number
1136 * Read the descriptor data
1137 */
1138 status = read_rom(serial, start_address +
1139 sizeof(struct ti_i2c_desc),
1140 sizeof(struct ti_i2c_firmware_rec),
1141 (u8 *)firmware_version);
1142 if (status) {
1143 kfree(firmware_version);
1144 kfree(rom_desc);
1145 kfree(ti_manuf_desc);
1146 return status;
1147 }
1148
1149 /*
1150 * Check version number of download with current
1151 * version in I2c
1152 */
1153 download_cur_ver = (firmware_version->Ver_Major << 8) +
1154 (firmware_version->Ver_Minor);
1155 download_new_ver = (fw_hdr->major_version << 8) +
1156 (fw_hdr->minor_version);
1157
1158 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1159 __func__, firmware_version->Ver_Major,
1160 firmware_version->Ver_Minor,
1161 fw_hdr->major_version, fw_hdr->minor_version);
1162
1163 /*
1164 * Check if we have an old version in the I2C and
1165 * update if necessary
1166 */
1167 if (download_cur_ver < download_new_ver) {
1168 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1169 __func__,
1170 firmware_version->Ver_Major,
1171 firmware_version->Ver_Minor,
1172 fw_hdr->major_version,
1173 fw_hdr->minor_version);
1174
1175 record = kmalloc(1, GFP_KERNEL);
1176 if (!record) {
1177 kfree(firmware_version);
1178 kfree(rom_desc);
1179 kfree(ti_manuf_desc);
1180 return -ENOMEM;
1181 }
1182 /*
1183 * In order to update the I2C firmware we must
1184 * change the type 2 record to type 0xF2. This
1185 * will force the UMP to come up in Boot Mode.
1186 * Then while in boot mode, the driver will
1187 * download the latest firmware (padded to
1188 * 15.5k) into the UMP ram. Finally when the
1189 * device comes back up in download mode the
1190 * driver will cause the new firmware to be
1191 * copied from the UMP Ram to I2C and the
1192 * firmware will update the record type from
1193 * 0xf2 to 0x02.
1194 */
1195 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1196
1197 /*
1198 * Change the I2C Firmware record type to
1199 * 0xf2 to trigger an update
1200 */
1201 status = write_rom(serial, start_address,
1202 sizeof(*record), record);
1203 if (status) {
1204 kfree(record);
1205 kfree(firmware_version);
1206 kfree(rom_desc);
1207 kfree(ti_manuf_desc);
1208 return status;
1209 }
1210
1211 /*
1212 * verify the write -- must do this in order
1213 * for write to complete before we do the
1214 * hardware reset
1215 */
1216 status = read_rom(serial,
1217 start_address,
1218 sizeof(*record),
1219 record);
1220 if (status) {
1221 kfree(record);
1222 kfree(firmware_version);
1223 kfree(rom_desc);
1224 kfree(ti_manuf_desc);
1225 return status;
1226 }
1227
1228 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1229 dev_err(dev, "%s - error resetting device\n",
1230 __func__);
1231 kfree(record);
1232 kfree(firmware_version);
1233 kfree(rom_desc);
1234 kfree(ti_manuf_desc);
1235 return -ENODEV;
1236 }
1237
1238 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1239
1240 /* Reset UMP -- Back to BOOT MODE */
1241 status = ti_vsend_sync(serial->serial->dev,
1242 UMPC_HARDWARE_RESET,
1243 0, 0, NULL, 0,
1244 TI_VSEND_TIMEOUT_DEFAULT);
1245
1246 dev_dbg(dev, "%s - HARDWARE RESET return %d\n",
1247 __func__, status);
1248
1249 /* return an error on purpose. */
1250 kfree(record);
1251 kfree(firmware_version);
1252 kfree(rom_desc);
1253 kfree(ti_manuf_desc);
1254 return -ENODEV;
1255 }
1256 /* Same or newer fw version is already loaded */
1257 serial->fw_version = download_cur_ver;
1258 kfree(firmware_version);
1259 }
1260 /* Search for type 0xF2 record (firmware blank record) */
1261 else {
1262 start_address = get_descriptor_addr(serial,
1263 I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc);
1264 if (start_address != 0) {
1265#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1266 sizeof(struct ti_i2c_firmware_rec))
1267 u8 *header;
1268 u8 *vheader;
1269
1270 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1271 if (!header) {
1272 kfree(rom_desc);
1273 kfree(ti_manuf_desc);
1274 return -ENOMEM;
1275 }
1276
1277 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1278 if (!vheader) {
1279 kfree(header);
1280 kfree(rom_desc);
1281 kfree(ti_manuf_desc);
1282 return -ENOMEM;
1283 }
1284
1285 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n",
1286 __func__);
1287
1288 /*
1289 * In order to update the I2C firmware we must change
1290 * the type 2 record to type 0xF2. This will force the
1291 * UMP to come up in Boot Mode. Then while in boot
1292 * mode, the driver will download the latest firmware
1293 * (padded to 15.5k) into the UMP ram. Finally when the
1294 * device comes back up in download mode the driver
1295 * will cause the new firmware to be copied from the
1296 * UMP Ram to I2C and the firmware will update the
1297 * record type from 0xf2 to 0x02.
1298 */
1299 status = build_i2c_fw_hdr(header, fw);
1300 if (status) {
1301 kfree(vheader);
1302 kfree(header);
1303 kfree(rom_desc);
1304 kfree(ti_manuf_desc);
1305 return -EINVAL;
1306 }
1307
1308 /*
1309 * Update I2C with type 0xf2 record with correct
1310 * size and checksum
1311 */
1312 status = write_rom(serial,
1313 start_address,
1314 HEADER_SIZE,
1315 header);
1316 if (status) {
1317 kfree(vheader);
1318 kfree(header);
1319 kfree(rom_desc);
1320 kfree(ti_manuf_desc);
1321 return -EINVAL;
1322 }
1323
1324 /*
1325 * verify the write -- must do this in order for
1326 * write to complete before we do the hardware reset
1327 */
1328 status = read_rom(serial, start_address,
1329 HEADER_SIZE, vheader);
1330
1331 if (status) {
1332 dev_dbg(dev, "%s - can't read header back\n",
1333 __func__);
1334 kfree(vheader);
1335 kfree(header);
1336 kfree(rom_desc);
1337 kfree(ti_manuf_desc);
1338 return status;
1339 }
1340 if (memcmp(vheader, header, HEADER_SIZE)) {
1341 dev_dbg(dev, "%s - write download record failed\n",
1342 __func__);
1343 kfree(vheader);
1344 kfree(header);
1345 kfree(rom_desc);
1346 kfree(ti_manuf_desc);
1347 return -EINVAL;
1348 }
1349
1350 kfree(vheader);
1351 kfree(header);
1352
1353 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1354
1355 /* Tell firmware to copy download image into I2C */
1356 status = ti_vsend_sync(serial->serial->dev,
1357 UMPC_COPY_DNLD_TO_I2C,
1358 0, 0, NULL, 0,
1359 TI_VSEND_TIMEOUT_FW_DOWNLOAD);
1360
1361 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__,
1362 status);
1363 if (status) {
1364 dev_err(dev,
1365 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1366 __func__);
1367 kfree(rom_desc);
1368 kfree(ti_manuf_desc);
1369 return status;
1370 }
1371 }
1372 }
1373
1374 /* The device is running the download code */
1375 kfree(rom_desc);
1376 kfree(ti_manuf_desc);
1377 return 0;
1378}
1379
1380static int do_boot_mode(struct edgeport_serial *serial,
1381 const struct firmware *fw)
1382{
1383 struct device *dev = &serial->serial->interface->dev;
1384 int status = 0;
1385 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1386 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1387
1388 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1389
1390 /* Configure the TI device so we can use the BULK pipes for download */
1391 status = config_boot_dev(serial->serial->dev);
1392 if (status)
1393 return status;
1394
1395 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1396 != USB_VENDOR_ID_ION) {
1397 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1398 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1399 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1400 goto stayinbootmode;
1401 }
1402
1403 /*
1404 * We have an ION device (I2c Must be programmed)
1405 * Determine I2C image type
1406 */
1407 if (i2c_type_bootmode(serial))
1408 goto stayinbootmode;
1409
1410 /* Check for ION Vendor ID and that the I2C is valid */
1411 if (!check_i2c_image(serial)) {
1412 struct ti_i2c_image_header *header;
1413 int i;
1414 u8 cs = 0;
1415 u8 *buffer;
1416 int buffer_size;
1417
1418 /*
1419 * Validate Hardware version number
1420 * Read Manufacturing Descriptor from TI Based Edgeport
1421 */
1422 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1423 if (!ti_manuf_desc)
1424 return -ENOMEM;
1425
1426 status = get_manuf_info(serial, (u8 *)ti_manuf_desc);
1427 if (status) {
1428 kfree(ti_manuf_desc);
1429 goto stayinbootmode;
1430 }
1431
1432 /* Check for version 2 */
1433 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1434 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1435 __func__, ti_cpu_rev(ti_manuf_desc));
1436 kfree(ti_manuf_desc);
1437 goto stayinbootmode;
1438 }
1439
1440 kfree(ti_manuf_desc);
1441
1442 /*
1443 * In order to update the I2C firmware we must change the type
1444 * 2 record to type 0xF2. This will force the UMP to come up
1445 * in Boot Mode. Then while in boot mode, the driver will
1446 * download the latest firmware (padded to 15.5k) into the
1447 * UMP ram. Finally when the device comes back up in download
1448 * mode the driver will cause the new firmware to be copied
1449 * from the UMP Ram to I2C and the firmware will update the
1450 * record type from 0xf2 to 0x02.
1451 *
1452 * Do we really have to copy the whole firmware image,
1453 * or could we do this in place!
1454 */
1455
1456 /* Allocate a 15.5k buffer + 3 byte header */
1457 buffer_size = (((1024 * 16) - 512) +
1458 sizeof(struct ti_i2c_image_header));
1459 buffer = kmalloc(buffer_size, GFP_KERNEL);
1460 if (!buffer)
1461 return -ENOMEM;
1462
1463 /* Initialize the buffer to 0xff (pad the buffer) */
1464 memset(buffer, 0xff, buffer_size);
1465 memcpy(buffer, &fw->data[4], fw->size - 4);
1466
1467 for (i = sizeof(struct ti_i2c_image_header);
1468 i < buffer_size; i++) {
1469 cs = (u8)(cs + buffer[i]);
1470 }
1471
1472 header = (struct ti_i2c_image_header *)buffer;
1473
1474 /* update length and checksum after padding */
1475 header->Length = cpu_to_le16((u16)(buffer_size -
1476 sizeof(struct ti_i2c_image_header)));
1477 header->CheckSum = cs;
1478
1479 /* Download the operational code */
1480 dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n",
1481 __func__,
1482 fw_hdr->major_version, fw_hdr->minor_version);
1483 status = download_code(serial, buffer, buffer_size);
1484
1485 kfree(buffer);
1486
1487 if (status) {
1488 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1489 return status;
1490 }
1491
1492 /* Device will reboot */
1493 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1494
1495 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1496
1497 return 1;
1498 }
1499
1500stayinbootmode:
1501 /* Eprom is invalid or blank stay in boot mode */
1502 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1503 serial->product_info.TiMode = TI_MODE_BOOT;
1504
1505 return 1;
1506}
1507
1508static int ti_do_config(struct edgeport_port *port, int feature, int on)
1509{
1510 on = !!on; /* 1 or 0 not bitmask */
1511
1512 return send_port_cmd(port->port, feature, on, NULL, 0);
1513}
1514
1515static int restore_mcr(struct edgeport_port *port, u8 mcr)
1516{
1517 int status = 0;
1518
1519 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1520
1521 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1522 if (status)
1523 return status;
1524 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1525 if (status)
1526 return status;
1527 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1528}
1529
1530/* Convert TI LSR to standard UART flags */
1531static u8 map_line_status(u8 ti_lsr)
1532{
1533 u8 lsr = 0;
1534
1535#define MAP_FLAG(flagUmp, flagUart) \
1536 if (ti_lsr & flagUmp) \
1537 lsr |= flagUart;
1538
1539 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1540 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1541 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1542 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1543 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1544 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1545
1546#undef MAP_FLAG
1547
1548 return lsr;
1549}
1550
1551static void handle_new_msr(struct edgeport_port *edge_port, u8 msr)
1552{
1553 struct async_icount *icount;
1554 struct tty_struct *tty;
1555
1556 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1557
1558 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1559 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1560 icount = &edge_port->port->icount;
1561
1562 /* update input line counters */
1563 if (msr & EDGEPORT_MSR_DELTA_CTS)
1564 icount->cts++;
1565 if (msr & EDGEPORT_MSR_DELTA_DSR)
1566 icount->dsr++;
1567 if (msr & EDGEPORT_MSR_DELTA_CD)
1568 icount->dcd++;
1569 if (msr & EDGEPORT_MSR_DELTA_RI)
1570 icount->rng++;
1571 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1572 }
1573
1574 /* Save the new modem status */
1575 edge_port->shadow_msr = msr & 0xf0;
1576
1577 tty = tty_port_tty_get(&edge_port->port->port);
1578 /* handle CTS flow control */
1579 if (tty && C_CRTSCTS(tty)) {
1580 if (msr & EDGEPORT_MSR_CTS)
1581 tty_wakeup(tty);
1582 }
1583 tty_kref_put(tty);
1584}
1585
1586static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1587 u8 lsr, u8 data)
1588{
1589 struct async_icount *icount;
1590 u8 new_lsr = (u8)(lsr & (u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1591 LSR_FRM_ERR | LSR_BREAK));
1592
1593 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1594
1595 edge_port->shadow_lsr = lsr;
1596
1597 if (new_lsr & LSR_BREAK)
1598 /*
1599 * Parity and Framing errors only count if they
1600 * occur exclusive of a break being received.
1601 */
1602 new_lsr &= (u8)(LSR_OVER_ERR | LSR_BREAK);
1603
1604 /* Place LSR data byte into Rx buffer */
1605 if (lsr_data)
1606 edge_tty_recv(edge_port->port, &data, 1);
1607
1608 /* update input line counters */
1609 icount = &edge_port->port->icount;
1610 if (new_lsr & LSR_BREAK)
1611 icount->brk++;
1612 if (new_lsr & LSR_OVER_ERR)
1613 icount->overrun++;
1614 if (new_lsr & LSR_PAR_ERR)
1615 icount->parity++;
1616 if (new_lsr & LSR_FRM_ERR)
1617 icount->frame++;
1618}
1619
1620static void edge_interrupt_callback(struct urb *urb)
1621{
1622 struct edgeport_serial *edge_serial = urb->context;
1623 struct usb_serial_port *port;
1624 struct edgeport_port *edge_port;
1625 struct device *dev;
1626 unsigned char *data = urb->transfer_buffer;
1627 int length = urb->actual_length;
1628 int port_number;
1629 int function;
1630 int retval;
1631 u8 lsr;
1632 u8 msr;
1633 int status = urb->status;
1634
1635 switch (status) {
1636 case 0:
1637 /* success */
1638 break;
1639 case -ECONNRESET:
1640 case -ENOENT:
1641 case -ESHUTDOWN:
1642 /* this urb is terminated, clean up */
1643 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1644 __func__, status);
1645 return;
1646 default:
1647 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1648 "%d\n", __func__, status);
1649 goto exit;
1650 }
1651
1652 if (!length) {
1653 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1654 goto exit;
1655 }
1656
1657 dev = &edge_serial->serial->dev->dev;
1658 usb_serial_debug_data(dev, __func__, length, data);
1659
1660 if (length != 2) {
1661 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1662 goto exit;
1663 }
1664
1665 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1666 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1667 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1668 port_number, function, data[1]);
1669
1670 if (port_number >= edge_serial->serial->num_ports) {
1671 dev_err(dev, "bad port number %d\n", port_number);
1672 goto exit;
1673 }
1674
1675 port = edge_serial->serial->port[port_number];
1676 edge_port = usb_get_serial_port_data(port);
1677 if (!edge_port) {
1678 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1679 return;
1680 }
1681 switch (function) {
1682 case TIUMP_INTERRUPT_CODE_LSR:
1683 lsr = map_line_status(data[1]);
1684 if (lsr & UMP_UART_LSR_DATA_MASK) {
1685 /*
1686 * Save the LSR event for bulk read completion routine
1687 */
1688 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1689 __func__, port_number, lsr);
1690 edge_port->lsr_event = 1;
1691 edge_port->lsr_mask = lsr;
1692 } else {
1693 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1694 __func__, port_number, lsr);
1695 handle_new_lsr(edge_port, 0, lsr, 0);
1696 }
1697 break;
1698
1699 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1700 /* Copy MSR from UMP */
1701 msr = data[1];
1702 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1703 __func__, port_number, msr);
1704 handle_new_msr(edge_port, msr);
1705 break;
1706
1707 default:
1708 dev_err(&urb->dev->dev,
1709 "%s - Unknown Interrupt code from UMP %x\n",
1710 __func__, data[1]);
1711 break;
1712
1713 }
1714
1715exit:
1716 retval = usb_submit_urb(urb, GFP_ATOMIC);
1717 if (retval)
1718 dev_err(&urb->dev->dev,
1719 "%s - usb_submit_urb failed with result %d\n",
1720 __func__, retval);
1721}
1722
1723static void edge_bulk_in_callback(struct urb *urb)
1724{
1725 struct edgeport_port *edge_port = urb->context;
1726 struct device *dev = &edge_port->port->dev;
1727 unsigned char *data = urb->transfer_buffer;
1728 unsigned long flags;
1729 int retval = 0;
1730 int port_number;
1731 int status = urb->status;
1732
1733 switch (status) {
1734 case 0:
1735 /* success */
1736 break;
1737 case -ECONNRESET:
1738 case -ENOENT:
1739 case -ESHUTDOWN:
1740 /* this urb is terminated, clean up */
1741 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1742 return;
1743 default:
1744 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1745 }
1746
1747 if (status == -EPIPE)
1748 goto exit;
1749
1750 if (status) {
1751 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1752 return;
1753 }
1754
1755 port_number = edge_port->port->port_number;
1756
1757 if (urb->actual_length > 0 && edge_port->lsr_event) {
1758 edge_port->lsr_event = 0;
1759 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1760 __func__, port_number, edge_port->lsr_mask, *data);
1761 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1762 /* Adjust buffer length/pointer */
1763 --urb->actual_length;
1764 ++data;
1765 }
1766
1767 if (urb->actual_length) {
1768 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1769 if (edge_port->close_pending)
1770 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1771 __func__);
1772 else
1773 edge_tty_recv(edge_port->port, data,
1774 urb->actual_length);
1775 edge_port->port->icount.rx += urb->actual_length;
1776 }
1777
1778exit:
1779 /* continue read unless stopped */
1780 spin_lock_irqsave(&edge_port->ep_lock, flags);
1781 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1782 retval = usb_submit_urb(urb, GFP_ATOMIC);
1783 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1784 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1785
1786 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1787 if (retval)
1788 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1789}
1790
1791static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1792 int length)
1793{
1794 int queued;
1795
1796 queued = tty_insert_flip_string(&port->port, data, length);
1797 if (queued < length)
1798 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1799 __func__, length - queued);
1800 tty_flip_buffer_push(&port->port);
1801}
1802
1803static void edge_bulk_out_callback(struct urb *urb)
1804{
1805 struct usb_serial_port *port = urb->context;
1806 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1807 int status = urb->status;
1808 struct tty_struct *tty;
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 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1821 __func__, status);
1822 return;
1823 default:
1824 dev_err_console(port, "%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(port, tty);
1831 tty_kref_put(tty);
1832}
1833
1834static 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 status;
1841 u16 open_settings;
1842 u8 transaction_timeout;
1843
1844 if (edge_port == NULL)
1845 return -ENODEV;
1846
1847 dev = port->serial->dev;
1848
1849 /* turn off loopback */
1850 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1851 if (status) {
1852 dev_err(&port->dev,
1853 "%s - cannot send clear loopback command, %d\n",
1854 __func__, status);
1855 return status;
1856 }
1857
1858 /* set up the port settings */
1859 if (tty)
1860 edge_set_termios(tty, port, &tty->termios);
1861
1862 /* open up the port */
1863
1864 /* milliseconds to timeout for DMA transfer */
1865 transaction_timeout = 2;
1866
1867 edge_port->ump_read_timeout =
1868 max(20, ((transaction_timeout * 3) / 2));
1869
1870 /* milliseconds to timeout for DMA transfer */
1871 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1872 UMP_PIPE_TRANS_TIMEOUT_ENA |
1873 (transaction_timeout << 2));
1874
1875 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1876
1877 /* Tell TI to open and start the port */
1878 status = send_port_cmd(port, UMPC_OPEN_PORT, open_settings, NULL, 0);
1879 if (status) {
1880 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1881 __func__, status);
1882 return status;
1883 }
1884
1885 /* Start the DMA? */
1886 status = send_port_cmd(port, UMPC_START_PORT, 0, NULL, 0);
1887 if (status) {
1888 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1889 __func__, status);
1890 return status;
1891 }
1892
1893 /* Clear TX and RX buffers in UMP */
1894 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1895 if (status) {
1896 dev_err(&port->dev,
1897 "%s - cannot send clear buffers command, %d\n",
1898 __func__, status);
1899 return status;
1900 }
1901
1902 /* Read Initial MSR */
1903 status = read_port_cmd(port, UMPC_READ_MSR, 0, &edge_port->shadow_msr, 1);
1904 if (status) {
1905 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1906 __func__, status);
1907 return status;
1908 }
1909
1910 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1911
1912 /* Set Initial MCR */
1913 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1914 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1915
1916 edge_serial = edge_port->edge_serial;
1917 if (mutex_lock_interruptible(&edge_serial->es_lock))
1918 return -ERESTARTSYS;
1919 if (edge_serial->num_ports_open == 0) {
1920 /* we are the first port to open, post the interrupt urb */
1921 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1922 urb->context = edge_serial;
1923 status = usb_submit_urb(urb, GFP_KERNEL);
1924 if (status) {
1925 dev_err(&port->dev,
1926 "%s - usb_submit_urb failed with value %d\n",
1927 __func__, status);
1928 goto release_es_lock;
1929 }
1930 }
1931
1932 /*
1933 * reset the data toggle on the bulk endpoints to work around bug in
1934 * host controllers where things get out of sync some times
1935 */
1936 usb_clear_halt(dev, port->write_urb->pipe);
1937 usb_clear_halt(dev, port->read_urb->pipe);
1938
1939 /* start up our bulk read urb */
1940 urb = port->read_urb;
1941 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1942 urb->context = edge_port;
1943 status = usb_submit_urb(urb, GFP_KERNEL);
1944 if (status) {
1945 dev_err(&port->dev,
1946 "%s - read bulk usb_submit_urb failed with value %d\n",
1947 __func__, status);
1948 goto unlink_int_urb;
1949 }
1950
1951 ++edge_serial->num_ports_open;
1952
1953 goto release_es_lock;
1954
1955unlink_int_urb:
1956 if (edge_port->edge_serial->num_ports_open == 0)
1957 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1958release_es_lock:
1959 mutex_unlock(&edge_serial->es_lock);
1960 return status;
1961}
1962
1963static void edge_close(struct usb_serial_port *port)
1964{
1965 struct edgeport_serial *edge_serial;
1966 struct edgeport_port *edge_port;
1967 unsigned long flags;
1968
1969 edge_serial = usb_get_serial_data(port->serial);
1970 edge_port = usb_get_serial_port_data(port);
1971 if (edge_serial == NULL || edge_port == NULL)
1972 return;
1973
1974 /*
1975 * The bulkreadcompletion routine will check
1976 * this flag and dump add read data
1977 */
1978 edge_port->close_pending = 1;
1979
1980 usb_kill_urb(port->read_urb);
1981 usb_kill_urb(port->write_urb);
1982 edge_port->ep_write_urb_in_use = 0;
1983 spin_lock_irqsave(&edge_port->ep_lock, flags);
1984 kfifo_reset_out(&port->write_fifo);
1985 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1986
1987 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1988 send_port_cmd(port, UMPC_CLOSE_PORT, 0, NULL, 0);
1989
1990 mutex_lock(&edge_serial->es_lock);
1991 --edge_port->edge_serial->num_ports_open;
1992 if (edge_port->edge_serial->num_ports_open <= 0) {
1993 /* last port is now closed, let's shut down our interrupt urb */
1994 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1995 edge_port->edge_serial->num_ports_open = 0;
1996 }
1997 mutex_unlock(&edge_serial->es_lock);
1998 edge_port->close_pending = 0;
1999}
2000
2001static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2002 const unsigned char *data, int count)
2003{
2004 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2005
2006 if (count == 0) {
2007 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
2008 return 0;
2009 }
2010
2011 if (edge_port == NULL)
2012 return -ENODEV;
2013 if (edge_port->close_pending == 1)
2014 return -ENODEV;
2015
2016 count = kfifo_in_locked(&port->write_fifo, data, count,
2017 &edge_port->ep_lock);
2018 edge_send(port, tty);
2019
2020 return count;
2021}
2022
2023static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
2024{
2025 int count, result;
2026 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2027 unsigned long flags;
2028
2029 spin_lock_irqsave(&edge_port->ep_lock, flags);
2030
2031 if (edge_port->ep_write_urb_in_use) {
2032 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2033 return;
2034 }
2035
2036 count = kfifo_out(&port->write_fifo,
2037 port->write_urb->transfer_buffer,
2038 port->bulk_out_size);
2039
2040 if (count == 0) {
2041 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2042 return;
2043 }
2044
2045 edge_port->ep_write_urb_in_use = 1;
2046
2047 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2048
2049 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
2050
2051 /* set up our urb */
2052 port->write_urb->transfer_buffer_length = count;
2053
2054 /* send the data out the bulk port */
2055 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2056 if (result) {
2057 dev_err_console(port,
2058 "%s - failed submitting write urb, error %d\n",
2059 __func__, result);
2060 edge_port->ep_write_urb_in_use = 0;
2061 /* TODO: reschedule edge_send */
2062 } else
2063 edge_port->port->icount.tx += count;
2064
2065 /*
2066 * wakeup any process waiting for writes to complete
2067 * there is now more room in the buffer for new writes
2068 */
2069 if (tty)
2070 tty_wakeup(tty);
2071}
2072
2073static unsigned int edge_write_room(struct tty_struct *tty)
2074{
2075 struct usb_serial_port *port = tty->driver_data;
2076 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2077 unsigned int room;
2078 unsigned long flags;
2079
2080 if (edge_port == NULL)
2081 return 0;
2082 if (edge_port->close_pending == 1)
2083 return 0;
2084
2085 spin_lock_irqsave(&edge_port->ep_lock, flags);
2086 room = kfifo_avail(&port->write_fifo);
2087 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2088
2089 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
2090 return room;
2091}
2092
2093static unsigned int edge_chars_in_buffer(struct tty_struct *tty)
2094{
2095 struct usb_serial_port *port = tty->driver_data;
2096 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2097 unsigned int chars;
2098 unsigned long flags;
2099 if (edge_port == NULL)
2100 return 0;
2101
2102 spin_lock_irqsave(&edge_port->ep_lock, flags);
2103 chars = kfifo_len(&port->write_fifo);
2104 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2105
2106 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars);
2107 return chars;
2108}
2109
2110static bool edge_tx_empty(struct usb_serial_port *port)
2111{
2112 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2113 int ret;
2114
2115 ret = tx_active(edge_port);
2116 if (ret > 0)
2117 return false;
2118
2119 return true;
2120}
2121
2122static void edge_throttle(struct tty_struct *tty)
2123{
2124 struct usb_serial_port *port = tty->driver_data;
2125 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2126 int status;
2127
2128 if (edge_port == NULL)
2129 return;
2130
2131 /* if we are implementing XON/XOFF, send the stop character */
2132 if (I_IXOFF(tty)) {
2133 unsigned char stop_char = STOP_CHAR(tty);
2134 status = edge_write(tty, port, &stop_char, 1);
2135 if (status <= 0) {
2136 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2137 }
2138 }
2139
2140 /*
2141 * if we are implementing RTS/CTS, stop reads
2142 * and the Edgeport will clear the RTS line
2143 */
2144 if (C_CRTSCTS(tty))
2145 stop_read(edge_port);
2146
2147}
2148
2149static void edge_unthrottle(struct tty_struct *tty)
2150{
2151 struct usb_serial_port *port = tty->driver_data;
2152 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2153 int status;
2154
2155 if (edge_port == NULL)
2156 return;
2157
2158 /* if we are implementing XON/XOFF, send the start character */
2159 if (I_IXOFF(tty)) {
2160 unsigned char start_char = START_CHAR(tty);
2161 status = edge_write(tty, port, &start_char, 1);
2162 if (status <= 0) {
2163 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2164 }
2165 }
2166 /*
2167 * if we are implementing RTS/CTS, restart reads
2168 * are the Edgeport will assert the RTS line
2169 */
2170 if (C_CRTSCTS(tty)) {
2171 status = restart_read(edge_port);
2172 if (status)
2173 dev_err(&port->dev,
2174 "%s - read bulk usb_submit_urb failed: %d\n",
2175 __func__, status);
2176 }
2177
2178}
2179
2180static void stop_read(struct edgeport_port *edge_port)
2181{
2182 unsigned long flags;
2183
2184 spin_lock_irqsave(&edge_port->ep_lock, flags);
2185
2186 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2187 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2188 edge_port->shadow_mcr &= ~MCR_RTS;
2189
2190 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2191}
2192
2193static int restart_read(struct edgeport_port *edge_port)
2194{
2195 struct urb *urb;
2196 int status = 0;
2197 unsigned long flags;
2198
2199 spin_lock_irqsave(&edge_port->ep_lock, flags);
2200
2201 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2202 urb = edge_port->port->read_urb;
2203 status = usb_submit_urb(urb, GFP_ATOMIC);
2204 }
2205 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2206 edge_port->shadow_mcr |= MCR_RTS;
2207
2208 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2209
2210 return status;
2211}
2212
2213static void change_port_settings(struct tty_struct *tty,
2214 struct edgeport_port *edge_port, const struct ktermios *old_termios)
2215{
2216 struct device *dev = &edge_port->port->dev;
2217 struct ump_uart_config *config;
2218 int baud;
2219 unsigned cflag;
2220 int status;
2221
2222 config = kmalloc (sizeof (*config), GFP_KERNEL);
2223 if (!config) {
2224 tty->termios = *old_termios;
2225 return;
2226 }
2227
2228 cflag = tty->termios.c_cflag;
2229
2230 config->wFlags = 0;
2231
2232 /* These flags must be set */
2233 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2234 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2235 config->bUartMode = (u8)(edge_port->bUartMode);
2236
2237 switch (cflag & CSIZE) {
2238 case CS5:
2239 config->bDataBits = UMP_UART_CHAR5BITS;
2240 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2241 break;
2242 case CS6:
2243 config->bDataBits = UMP_UART_CHAR6BITS;
2244 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2245 break;
2246 case CS7:
2247 config->bDataBits = UMP_UART_CHAR7BITS;
2248 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2249 break;
2250 default:
2251 case CS8:
2252 config->bDataBits = UMP_UART_CHAR8BITS;
2253 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2254 break;
2255 }
2256
2257 if (cflag & PARENB) {
2258 if (cflag & PARODD) {
2259 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2260 config->bParity = UMP_UART_ODDPARITY;
2261 dev_dbg(dev, "%s - parity = odd\n", __func__);
2262 } else {
2263 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2264 config->bParity = UMP_UART_EVENPARITY;
2265 dev_dbg(dev, "%s - parity = even\n", __func__);
2266 }
2267 } else {
2268 config->bParity = UMP_UART_NOPARITY;
2269 dev_dbg(dev, "%s - parity = none\n", __func__);
2270 }
2271
2272 if (cflag & CSTOPB) {
2273 config->bStopBits = UMP_UART_STOPBIT2;
2274 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2275 } else {
2276 config->bStopBits = UMP_UART_STOPBIT1;
2277 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2278 }
2279
2280 /* figure out the flow control settings */
2281 if (cflag & CRTSCTS) {
2282 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2283 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2284 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2285 } else {
2286 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2287 restart_read(edge_port);
2288 }
2289
2290 /*
2291 * if we are implementing XON/XOFF, set the start and stop
2292 * character in the device
2293 */
2294 config->cXon = START_CHAR(tty);
2295 config->cXoff = STOP_CHAR(tty);
2296
2297 /* if we are implementing INBOUND XON/XOFF */
2298 if (I_IXOFF(tty)) {
2299 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2300 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2301 __func__, config->cXon, config->cXoff);
2302 } else
2303 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2304
2305 /* if we are implementing OUTBOUND XON/XOFF */
2306 if (I_IXON(tty)) {
2307 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2308 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2309 __func__, config->cXon, config->cXoff);
2310 } else
2311 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2312
2313 tty->termios.c_cflag &= ~CMSPAR;
2314
2315 /* Round the baud rate */
2316 baud = tty_get_baud_rate(tty);
2317 if (!baud) {
2318 /* pick a default, any default... */
2319 baud = 9600;
2320 } else {
2321 /* Avoid a zero divisor. */
2322 baud = min(baud, 461550);
2323 tty_encode_baud_rate(tty, baud, baud);
2324 }
2325
2326 edge_port->baud_rate = baud;
2327 config->wBaudRate = (u16)((461550L + baud/2) / baud);
2328
2329 /* FIXME: Recompute actual baud from divisor here */
2330
2331 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2332
2333 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2334 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2335 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2336 dev_dbg(dev, "bParity: %d\n", config->bParity);
2337 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2338 dev_dbg(dev, "cXon: %d\n", config->cXon);
2339 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2340 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2341
2342 /* move the word values into big endian mode */
2343 cpu_to_be16s(&config->wFlags);
2344 cpu_to_be16s(&config->wBaudRate);
2345
2346 status = send_port_cmd(edge_port->port, UMPC_SET_CONFIG, 0, config,
2347 sizeof(*config));
2348 if (status)
2349 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2350 __func__, status);
2351 kfree(config);
2352}
2353
2354static void edge_set_termios(struct tty_struct *tty,
2355 struct usb_serial_port *port,
2356 const struct ktermios *old_termios)
2357{
2358 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2359
2360 if (edge_port == NULL)
2361 return;
2362 /* change the port settings to the new ones specified */
2363 change_port_settings(tty, edge_port, old_termios);
2364}
2365
2366static int edge_tiocmset(struct tty_struct *tty,
2367 unsigned int set, unsigned int clear)
2368{
2369 struct usb_serial_port *port = tty->driver_data;
2370 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2371 unsigned int mcr;
2372 unsigned long flags;
2373
2374 spin_lock_irqsave(&edge_port->ep_lock, flags);
2375 mcr = edge_port->shadow_mcr;
2376 if (set & TIOCM_RTS)
2377 mcr |= MCR_RTS;
2378 if (set & TIOCM_DTR)
2379 mcr |= MCR_DTR;
2380 if (set & TIOCM_LOOP)
2381 mcr |= MCR_LOOPBACK;
2382
2383 if (clear & TIOCM_RTS)
2384 mcr &= ~MCR_RTS;
2385 if (clear & TIOCM_DTR)
2386 mcr &= ~MCR_DTR;
2387 if (clear & TIOCM_LOOP)
2388 mcr &= ~MCR_LOOPBACK;
2389
2390 edge_port->shadow_mcr = mcr;
2391 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2392
2393 restore_mcr(edge_port, mcr);
2394 return 0;
2395}
2396
2397static int edge_tiocmget(struct tty_struct *tty)
2398{
2399 struct usb_serial_port *port = tty->driver_data;
2400 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2401 unsigned int result = 0;
2402 unsigned int msr;
2403 unsigned int mcr;
2404 unsigned long flags;
2405
2406 spin_lock_irqsave(&edge_port->ep_lock, flags);
2407
2408 msr = edge_port->shadow_msr;
2409 mcr = edge_port->shadow_mcr;
2410 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2411 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2412 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2413 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2414 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2415 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2416
2417
2418 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2419 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2420
2421 return result;
2422}
2423
2424static int edge_break(struct tty_struct *tty, int break_state)
2425{
2426 struct usb_serial_port *port = tty->driver_data;
2427 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2428 int status;
2429 int bv = 0; /* Off */
2430
2431 if (break_state == -1)
2432 bv = 1; /* On */
2433
2434 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2435 if (status) {
2436 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2437 __func__, status);
2438 return status;
2439 }
2440
2441 return 0;
2442}
2443
2444static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial)
2445{
2446 if (!edge_serial->use_heartbeat)
2447 return;
2448
2449 schedule_delayed_work(&edge_serial->heartbeat_work,
2450 FW_HEARTBEAT_SECS * HZ);
2451}
2452
2453static void edge_heartbeat_work(struct work_struct *work)
2454{
2455 struct edgeport_serial *serial;
2456 struct ti_i2c_desc *rom_desc;
2457
2458 serial = container_of(work, struct edgeport_serial,
2459 heartbeat_work.work);
2460
2461 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
2462
2463 /* Descriptor address request is enough to reset the firmware timer */
2464 if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
2465 rom_desc)) {
2466 dev_err(&serial->serial->interface->dev,
2467 "%s - Incomplete heartbeat\n", __func__);
2468 }
2469 kfree(rom_desc);
2470
2471 edge_heartbeat_schedule(serial);
2472}
2473
2474static int edge_calc_num_ports(struct usb_serial *serial,
2475 struct usb_serial_endpoints *epds)
2476{
2477 struct device *dev = &serial->interface->dev;
2478 unsigned char num_ports = serial->type->num_ports;
2479
2480 /* Make sure we have the required endpoints when in download mode. */
2481 if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) {
2482 if (epds->num_bulk_in < num_ports ||
2483 epds->num_bulk_out < num_ports ||
2484 epds->num_interrupt_in < 1) {
2485 dev_err(dev, "required endpoints missing\n");
2486 return -ENODEV;
2487 }
2488 }
2489
2490 return num_ports;
2491}
2492
2493static int edge_startup(struct usb_serial *serial)
2494{
2495 struct edgeport_serial *edge_serial;
2496 int status;
2497 u16 product_id;
2498
2499 /* create our private serial structure */
2500 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2501 if (!edge_serial)
2502 return -ENOMEM;
2503
2504 mutex_init(&edge_serial->es_lock);
2505 edge_serial->serial = serial;
2506 INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work);
2507 usb_set_serial_data(serial, edge_serial);
2508
2509 status = download_fw(edge_serial);
2510 if (status < 0) {
2511 kfree(edge_serial);
2512 return status;
2513 }
2514
2515 if (status > 0)
2516 return 1; /* bind but do not register any ports */
2517
2518 product_id = le16_to_cpu(
2519 edge_serial->serial->dev->descriptor.idProduct);
2520
2521 /* Currently only the EP/416 models require heartbeat support */
2522 if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) {
2523 if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 ||
2524 product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) {
2525 edge_serial->use_heartbeat = true;
2526 }
2527 }
2528
2529 edge_heartbeat_schedule(edge_serial);
2530
2531 return 0;
2532}
2533
2534static void edge_disconnect(struct usb_serial *serial)
2535{
2536 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2537
2538 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2539}
2540
2541static void edge_release(struct usb_serial *serial)
2542{
2543 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2544
2545 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2546 kfree(edge_serial);
2547}
2548
2549static int edge_port_probe(struct usb_serial_port *port)
2550{
2551 struct edgeport_port *edge_port;
2552 int ret;
2553
2554 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2555 if (!edge_port)
2556 return -ENOMEM;
2557
2558 spin_lock_init(&edge_port->ep_lock);
2559 edge_port->port = port;
2560 edge_port->edge_serial = usb_get_serial_data(port->serial);
2561 edge_port->bUartMode = default_uart_mode;
2562
2563 switch (port->port_number) {
2564 case 0:
2565 edge_port->uart_base = UMPMEM_BASE_UART1;
2566 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2567 break;
2568 case 1:
2569 edge_port->uart_base = UMPMEM_BASE_UART2;
2570 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2571 break;
2572 default:
2573 dev_err(&port->dev, "unknown port number\n");
2574 ret = -ENODEV;
2575 goto err;
2576 }
2577
2578 dev_dbg(&port->dev,
2579 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2580 __func__, port->port_number, edge_port->uart_base,
2581 edge_port->dma_address);
2582
2583 usb_set_serial_port_data(port, edge_port);
2584
2585 ret = edge_create_sysfs_attrs(port);
2586 if (ret)
2587 goto err;
2588
2589 /*
2590 * The LSR does not tell when the transmitter shift register has
2591 * emptied so add a one-character drain delay.
2592 */
2593 port->port.drain_delay = 1;
2594
2595 return 0;
2596err:
2597 kfree(edge_port);
2598
2599 return ret;
2600}
2601
2602static void edge_port_remove(struct usb_serial_port *port)
2603{
2604 struct edgeport_port *edge_port;
2605
2606 edge_port = usb_get_serial_port_data(port);
2607 edge_remove_sysfs_attrs(port);
2608 kfree(edge_port);
2609}
2610
2611/* Sysfs Attributes */
2612
2613static ssize_t uart_mode_show(struct device *dev,
2614 struct device_attribute *attr, char *buf)
2615{
2616 struct usb_serial_port *port = to_usb_serial_port(dev);
2617 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2618
2619 return sprintf(buf, "%d\n", edge_port->bUartMode);
2620}
2621
2622static ssize_t uart_mode_store(struct device *dev,
2623 struct device_attribute *attr, const char *valbuf, size_t count)
2624{
2625 struct usb_serial_port *port = to_usb_serial_port(dev);
2626 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2627 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2628
2629 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2630
2631 if (v < 256)
2632 edge_port->bUartMode = v;
2633 else
2634 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2635
2636 return count;
2637}
2638static DEVICE_ATTR_RW(uart_mode);
2639
2640static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2641{
2642 return device_create_file(&port->dev, &dev_attr_uart_mode);
2643}
2644
2645static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2646{
2647 device_remove_file(&port->dev, &dev_attr_uart_mode);
2648 return 0;
2649}
2650
2651#ifdef CONFIG_PM
2652static int edge_suspend(struct usb_serial *serial, pm_message_t message)
2653{
2654 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2655
2656 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2657
2658 return 0;
2659}
2660
2661static int edge_resume(struct usb_serial *serial)
2662{
2663 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2664
2665 edge_heartbeat_schedule(edge_serial);
2666
2667 return 0;
2668}
2669#endif
2670
2671static struct usb_serial_driver edgeport_1port_device = {
2672 .driver = {
2673 .owner = THIS_MODULE,
2674 .name = "edgeport_ti_1",
2675 },
2676 .description = "Edgeport TI 1 port adapter",
2677 .id_table = edgeport_1port_id_table,
2678 .num_ports = 1,
2679 .num_bulk_out = 1,
2680 .open = edge_open,
2681 .close = edge_close,
2682 .throttle = edge_throttle,
2683 .unthrottle = edge_unthrottle,
2684 .attach = edge_startup,
2685 .calc_num_ports = edge_calc_num_ports,
2686 .disconnect = edge_disconnect,
2687 .release = edge_release,
2688 .port_probe = edge_port_probe,
2689 .port_remove = edge_port_remove,
2690 .set_termios = edge_set_termios,
2691 .tiocmget = edge_tiocmget,
2692 .tiocmset = edge_tiocmset,
2693 .tiocmiwait = usb_serial_generic_tiocmiwait,
2694 .get_icount = usb_serial_generic_get_icount,
2695 .write = edge_write,
2696 .write_room = edge_write_room,
2697 .chars_in_buffer = edge_chars_in_buffer,
2698 .tx_empty = edge_tx_empty,
2699 .break_ctl = edge_break,
2700 .read_int_callback = edge_interrupt_callback,
2701 .read_bulk_callback = edge_bulk_in_callback,
2702 .write_bulk_callback = edge_bulk_out_callback,
2703#ifdef CONFIG_PM
2704 .suspend = edge_suspend,
2705 .resume = edge_resume,
2706#endif
2707};
2708
2709static struct usb_serial_driver edgeport_2port_device = {
2710 .driver = {
2711 .owner = THIS_MODULE,
2712 .name = "edgeport_ti_2",
2713 },
2714 .description = "Edgeport TI 2 port adapter",
2715 .id_table = edgeport_2port_id_table,
2716 .num_ports = 2,
2717 .num_bulk_out = 1,
2718 .open = edge_open,
2719 .close = edge_close,
2720 .throttle = edge_throttle,
2721 .unthrottle = edge_unthrottle,
2722 .attach = edge_startup,
2723 .calc_num_ports = edge_calc_num_ports,
2724 .disconnect = edge_disconnect,
2725 .release = edge_release,
2726 .port_probe = edge_port_probe,
2727 .port_remove = edge_port_remove,
2728 .set_termios = edge_set_termios,
2729 .tiocmget = edge_tiocmget,
2730 .tiocmset = edge_tiocmset,
2731 .tiocmiwait = usb_serial_generic_tiocmiwait,
2732 .get_icount = usb_serial_generic_get_icount,
2733 .write = edge_write,
2734 .write_room = edge_write_room,
2735 .chars_in_buffer = edge_chars_in_buffer,
2736 .tx_empty = edge_tx_empty,
2737 .break_ctl = edge_break,
2738 .read_int_callback = edge_interrupt_callback,
2739 .read_bulk_callback = edge_bulk_in_callback,
2740 .write_bulk_callback = edge_bulk_out_callback,
2741#ifdef CONFIG_PM
2742 .suspend = edge_suspend,
2743 .resume = edge_resume,
2744#endif
2745};
2746
2747static struct usb_serial_driver * const serial_drivers[] = {
2748 &edgeport_1port_device, &edgeport_2port_device, NULL
2749};
2750
2751module_usb_serial_driver(serial_drivers, id_table_combined);
2752
2753MODULE_AUTHOR(DRIVER_AUTHOR);
2754MODULE_DESCRIPTION(DRIVER_DESC);
2755MODULE_LICENSE("GPL");
2756MODULE_FIRMWARE("edgeport/down3.bin");
2757
2758module_param(ignore_cpu_rev, bool, 0644);
2759MODULE_PARM_DESC(ignore_cpu_rev,
2760 "Ignore the cpu revision when connecting to a device");
2761
2762module_param(default_uart_mode, int, 0644);
2763MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
1/*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14 *
15 * For questions or problems with this driver, contact Inside Out
16 * Networks technical support, or Peter Berger <pberger@brimson.com>,
17 * or Al Borchers <alborchers@steinerpoint.com>.
18 */
19
20#include <linux/kernel.h>
21#include <linux/jiffies.h>
22#include <linux/errno.h>
23#include <linux/slab.h>
24#include <linux/tty.h>
25#include <linux/tty_driver.h>
26#include <linux/tty_flip.h>
27#include <linux/module.h>
28#include <linux/spinlock.h>
29#include <linux/mutex.h>
30#include <linux/serial.h>
31#include <linux/swab.h>
32#include <linux/kfifo.h>
33#include <linux/ioctl.h>
34#include <linux/firmware.h>
35#include <linux/uaccess.h>
36#include <linux/usb.h>
37#include <linux/usb/serial.h>
38
39#include "io_16654.h"
40#include "io_usbvend.h"
41#include "io_ti.h"
42
43#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
44#define DRIVER_DESC "Edgeport USB Serial Driver"
45
46#define EPROM_PAGE_SIZE 64
47
48
49/* different hardware types */
50#define HARDWARE_TYPE_930 0
51#define HARDWARE_TYPE_TIUMP 1
52
53/* IOCTL_PRIVATE_TI_GET_MODE Definitions */
54#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
55#define TI_MODE_BOOT 1 /* Staying in boot mode */
56#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
57#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but
58 transitioning to download mode */
59
60/* read urb state */
61#define EDGE_READ_URB_RUNNING 0
62#define EDGE_READ_URB_STOPPING 1
63#define EDGE_READ_URB_STOPPED 2
64
65#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
66
67
68/* Product information read from the Edgeport */
69struct product_info {
70 int TiMode; /* Current TI Mode */
71 __u8 hardware_type; /* Type of hardware */
72} __attribute__((packed));
73
74struct edgeport_port {
75 __u16 uart_base;
76 __u16 dma_address;
77 __u8 shadow_msr;
78 __u8 shadow_mcr;
79 __u8 shadow_lsr;
80 __u8 lsr_mask;
81 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
82 wait without data before completing
83 a read short */
84 int baud_rate;
85 int close_pending;
86 int lsr_event;
87
88 struct edgeport_serial *edge_serial;
89 struct usb_serial_port *port;
90 __u8 bUartMode; /* Port type, 0: RS232, etc. */
91 spinlock_t ep_lock;
92 int ep_read_urb_state;
93 int ep_write_urb_in_use;
94};
95
96struct edgeport_serial {
97 struct product_info product_info;
98 u8 TI_I2C_Type; /* Type of I2C in UMP */
99 u8 TiReadI2C; /* Set to TRUE if we have read the
100 I2c in Boot Mode */
101 struct mutex es_lock;
102 int num_ports_open;
103 struct usb_serial *serial;
104};
105
106
107/* Devices that this driver supports */
108static const struct usb_device_id edgeport_1port_id_table[] = {
109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
125 { }
126};
127
128static const struct usb_device_id edgeport_2port_id_table[] = {
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
141 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
147 { }
148};
149
150/* Devices that this driver supports */
151static const struct usb_device_id id_table_combined[] = {
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
185 { }
186};
187
188MODULE_DEVICE_TABLE(usb, id_table_combined);
189
190static unsigned char OperationalMajorVersion;
191static unsigned char OperationalMinorVersion;
192static unsigned short OperationalBuildNumber;
193
194static int closing_wait = EDGE_CLOSING_WAIT;
195static bool ignore_cpu_rev;
196static int default_uart_mode; /* RS232 */
197
198static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
199 int length);
200
201static void stop_read(struct edgeport_port *edge_port);
202static int restart_read(struct edgeport_port *edge_port);
203
204static void edge_set_termios(struct tty_struct *tty,
205 struct usb_serial_port *port, struct ktermios *old_termios);
206static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
207
208/* sysfs attributes */
209static int edge_create_sysfs_attrs(struct usb_serial_port *port);
210static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
211
212
213static int ti_vread_sync(struct usb_device *dev, __u8 request,
214 __u16 value, __u16 index, u8 *data, int size)
215{
216 int status;
217
218 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
219 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
220 value, index, data, size, 1000);
221 if (status < 0)
222 return status;
223 if (status != size) {
224 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
225 __func__, size, status);
226 return -ECOMM;
227 }
228 return 0;
229}
230
231static int ti_vsend_sync(struct usb_device *dev, __u8 request,
232 __u16 value, __u16 index, u8 *data, int size)
233{
234 int status;
235
236 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
237 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
238 value, index, data, size, 1000);
239 if (status < 0)
240 return status;
241 if (status != size) {
242 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
243 __func__, size, status);
244 return -ECOMM;
245 }
246 return 0;
247}
248
249static int send_cmd(struct usb_device *dev, __u8 command,
250 __u8 moduleid, __u16 value, u8 *data,
251 int size)
252{
253 return ti_vsend_sync(dev, command, value, moduleid, data, size);
254}
255
256/* clear tx/rx buffers and fifo in TI UMP */
257static int purge_port(struct usb_serial_port *port, __u16 mask)
258{
259 int port_number = port->port_number;
260
261 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
262
263 return send_cmd(port->serial->dev,
264 UMPC_PURGE_PORT,
265 (__u8)(UMPM_UART1_PORT + port_number),
266 mask,
267 NULL,
268 0);
269}
270
271/**
272 * read_download_mem - Read edgeport memory from TI chip
273 * @dev: usb device pointer
274 * @start_address: Device CPU address at which to read
275 * @length: Length of above data
276 * @address_type: Can read both XDATA and I2C
277 * @buffer: pointer to input data buffer
278 */
279static int read_download_mem(struct usb_device *dev, int start_address,
280 int length, __u8 address_type, __u8 *buffer)
281{
282 int status = 0;
283 __u8 read_length;
284 u16 be_start_address;
285
286 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
287
288 /* Read in blocks of 64 bytes
289 * (TI firmware can't handle more than 64 byte reads)
290 */
291 while (length) {
292 if (length > 64)
293 read_length = 64;
294 else
295 read_length = (__u8)length;
296
297 if (read_length > 1) {
298 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
299 }
300 /*
301 * NOTE: Must use swab as wIndex is sent in little-endian
302 * byte order regardless of host byte order.
303 */
304 be_start_address = swab16((u16)start_address);
305 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
306 (__u16)address_type,
307 be_start_address,
308 buffer, read_length);
309
310 if (status) {
311 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
312 return status;
313 }
314
315 if (read_length > 1)
316 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
317
318 /* Update pointers/length */
319 start_address += read_length;
320 buffer += read_length;
321 length -= read_length;
322 }
323
324 return status;
325}
326
327static int read_ram(struct usb_device *dev, int start_address,
328 int length, __u8 *buffer)
329{
330 return read_download_mem(dev, start_address, length,
331 DTK_ADDR_SPACE_XDATA, buffer);
332}
333
334/* Read edgeport memory to a given block */
335static int read_boot_mem(struct edgeport_serial *serial,
336 int start_address, int length, __u8 *buffer)
337{
338 int status = 0;
339 int i;
340
341 for (i = 0; i < length; i++) {
342 status = ti_vread_sync(serial->serial->dev,
343 UMPC_MEMORY_READ, serial->TI_I2C_Type,
344 (__u16)(start_address+i), &buffer[i], 0x01);
345 if (status) {
346 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
347 return status;
348 }
349 }
350
351 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
352 __func__, start_address, length);
353 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
354
355 serial->TiReadI2C = 1;
356
357 return status;
358}
359
360/* Write given block to TI EPROM memory */
361static int write_boot_mem(struct edgeport_serial *serial,
362 int start_address, int length, __u8 *buffer)
363{
364 int status = 0;
365 int i;
366 u8 *temp;
367
368 /* Must do a read before write */
369 if (!serial->TiReadI2C) {
370 temp = kmalloc(1, GFP_KERNEL);
371 if (!temp)
372 return -ENOMEM;
373
374 status = read_boot_mem(serial, 0, 1, temp);
375 kfree(temp);
376 if (status)
377 return status;
378 }
379
380 for (i = 0; i < length; ++i) {
381 status = ti_vsend_sync(serial->serial->dev,
382 UMPC_MEMORY_WRITE, buffer[i],
383 (__u16)(i + start_address), NULL, 0);
384 if (status)
385 return status;
386 }
387
388 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
389 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
390
391 return status;
392}
393
394
395/* Write edgeport I2C memory to TI chip */
396static int write_i2c_mem(struct edgeport_serial *serial,
397 int start_address, int length, __u8 address_type, __u8 *buffer)
398{
399 struct device *dev = &serial->serial->dev->dev;
400 int status = 0;
401 int write_length;
402 u16 be_start_address;
403
404 /* We can only send a maximum of 1 aligned byte page at a time */
405
406 /* calculate the number of bytes left in the first page */
407 write_length = EPROM_PAGE_SIZE -
408 (start_address & (EPROM_PAGE_SIZE - 1));
409
410 if (write_length > length)
411 write_length = length;
412
413 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
414 __func__, start_address, write_length);
415 usb_serial_debug_data(dev, __func__, write_length, buffer);
416
417 /*
418 * Write first page.
419 *
420 * NOTE: Must use swab as wIndex is sent in little-endian byte order
421 * regardless of host byte order.
422 */
423 be_start_address = swab16((u16)start_address);
424 status = ti_vsend_sync(serial->serial->dev,
425 UMPC_MEMORY_WRITE, (__u16)address_type,
426 be_start_address,
427 buffer, write_length);
428 if (status) {
429 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
430 return status;
431 }
432
433 length -= write_length;
434 start_address += write_length;
435 buffer += write_length;
436
437 /* We should be aligned now -- can write
438 max page size bytes at a time */
439 while (length) {
440 if (length > EPROM_PAGE_SIZE)
441 write_length = EPROM_PAGE_SIZE;
442 else
443 write_length = length;
444
445 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
446 __func__, start_address, write_length);
447 usb_serial_debug_data(dev, __func__, write_length, buffer);
448
449 /*
450 * Write next page.
451 *
452 * NOTE: Must use swab as wIndex is sent in little-endian byte
453 * order regardless of host byte order.
454 */
455 be_start_address = swab16((u16)start_address);
456 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
457 (__u16)address_type,
458 be_start_address,
459 buffer, write_length);
460 if (status) {
461 dev_err(dev, "%s - ERROR %d\n", __func__, status);
462 return status;
463 }
464
465 length -= write_length;
466 start_address += write_length;
467 buffer += write_length;
468 }
469 return status;
470}
471
472/* Examine the UMP DMA registers and LSR
473 *
474 * Check the MSBit of the X and Y DMA byte count registers.
475 * A zero in this bit indicates that the TX DMA buffers are empty
476 * then check the TX Empty bit in the UART.
477 */
478static int tx_active(struct edgeport_port *port)
479{
480 int status;
481 struct out_endpoint_desc_block *oedb;
482 __u8 *lsr;
483 int bytes_left = 0;
484
485 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
486 if (!oedb)
487 return -ENOMEM;
488
489 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
490 as not all platforms can do DMA
491 from stack */
492 if (!lsr) {
493 kfree(oedb);
494 return -ENOMEM;
495 }
496 /* Read the DMA Count Registers */
497 status = read_ram(port->port->serial->dev, port->dma_address,
498 sizeof(*oedb), (void *)oedb);
499 if (status)
500 goto exit_is_tx_active;
501
502 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
503
504 /* and the LSR */
505 status = read_ram(port->port->serial->dev,
506 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
507
508 if (status)
509 goto exit_is_tx_active;
510 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
511
512 /* If either buffer has data or we are transmitting then return TRUE */
513 if ((oedb->XByteCount & 0x80) != 0)
514 bytes_left += 64;
515
516 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
517 bytes_left += 1;
518
519 /* We return Not Active if we get any kind of error */
520exit_is_tx_active:
521 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
522
523 kfree(lsr);
524 kfree(oedb);
525 return bytes_left;
526}
527
528static int choose_config(struct usb_device *dev)
529{
530 /*
531 * There may be multiple configurations on this device, in which case
532 * we would need to read and parse all of them to find out which one
533 * we want. However, we just support one config at this point,
534 * configuration # 1, which is Config Descriptor 0.
535 */
536
537 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
538 __func__, dev->config->desc.bNumInterfaces);
539 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
540 __func__, dev->config->desc.bMaxPower * 2);
541
542 if (dev->config->desc.bNumInterfaces != 1) {
543 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
544 return -ENODEV;
545 }
546
547 return 0;
548}
549
550static int read_rom(struct edgeport_serial *serial,
551 int start_address, int length, __u8 *buffer)
552{
553 int status;
554
555 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
556 status = read_download_mem(serial->serial->dev,
557 start_address,
558 length,
559 serial->TI_I2C_Type,
560 buffer);
561 } else {
562 status = read_boot_mem(serial, start_address, length,
563 buffer);
564 }
565 return status;
566}
567
568static int write_rom(struct edgeport_serial *serial, int start_address,
569 int length, __u8 *buffer)
570{
571 if (serial->product_info.TiMode == TI_MODE_BOOT)
572 return write_boot_mem(serial, start_address, length,
573 buffer);
574
575 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
576 return write_i2c_mem(serial, start_address, length,
577 serial->TI_I2C_Type, buffer);
578 return -EINVAL;
579}
580
581
582
583/* Read a descriptor header from I2C based on type */
584static int get_descriptor_addr(struct edgeport_serial *serial,
585 int desc_type, struct ti_i2c_desc *rom_desc)
586{
587 int start_address;
588 int status;
589
590 /* Search for requested descriptor in I2C */
591 start_address = 2;
592 do {
593 status = read_rom(serial,
594 start_address,
595 sizeof(struct ti_i2c_desc),
596 (__u8 *)rom_desc);
597 if (status)
598 return 0;
599
600 if (rom_desc->Type == desc_type)
601 return start_address;
602
603 start_address = start_address + sizeof(struct ti_i2c_desc) +
604 le16_to_cpu(rom_desc->Size);
605
606 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
607
608 return 0;
609}
610
611/* Validate descriptor checksum */
612static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
613{
614 __u16 i;
615 __u8 cs = 0;
616
617 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
618 cs = (__u8)(cs + buffer[i]);
619
620 if (cs != rom_desc->CheckSum) {
621 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
622 return -EINVAL;
623 }
624 return 0;
625}
626
627/* Make sure that the I2C image is good */
628static int check_i2c_image(struct edgeport_serial *serial)
629{
630 struct device *dev = &serial->serial->dev->dev;
631 int status = 0;
632 struct ti_i2c_desc *rom_desc;
633 int start_address = 2;
634 __u8 *buffer;
635 __u16 ttype;
636
637 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
638 if (!rom_desc)
639 return -ENOMEM;
640
641 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
642 if (!buffer) {
643 kfree(rom_desc);
644 return -ENOMEM;
645 }
646
647 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
648 status = read_rom(serial, 0, 1, buffer);
649 if (status)
650 goto out;
651
652 if (*buffer != UMP5152 && *buffer != UMP3410) {
653 dev_err(dev, "%s - invalid buffer signature\n", __func__);
654 status = -ENODEV;
655 goto out;
656 }
657
658 do {
659 /* Validate the I2C */
660 status = read_rom(serial,
661 start_address,
662 sizeof(struct ti_i2c_desc),
663 (__u8 *)rom_desc);
664 if (status)
665 break;
666
667 if ((start_address + sizeof(struct ti_i2c_desc) +
668 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
669 status = -ENODEV;
670 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
671 break;
672 }
673
674 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
675
676 /* Skip type 2 record */
677 ttype = rom_desc->Type & 0x0f;
678 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
679 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
680 /* Read the descriptor data */
681 status = read_rom(serial, start_address +
682 sizeof(struct ti_i2c_desc),
683 le16_to_cpu(rom_desc->Size),
684 buffer);
685 if (status)
686 break;
687
688 status = valid_csum(rom_desc, buffer);
689 if (status)
690 break;
691 }
692 start_address = start_address + sizeof(struct ti_i2c_desc) +
693 le16_to_cpu(rom_desc->Size);
694
695 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
696 (start_address < TI_MAX_I2C_SIZE));
697
698 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
699 (start_address > TI_MAX_I2C_SIZE))
700 status = -ENODEV;
701
702out:
703 kfree(buffer);
704 kfree(rom_desc);
705 return status;
706}
707
708static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
709{
710 int status;
711 int start_address;
712 struct ti_i2c_desc *rom_desc;
713 struct edge_ti_manuf_descriptor *desc;
714 struct device *dev = &serial->serial->dev->dev;
715
716 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
717 if (!rom_desc)
718 return -ENOMEM;
719
720 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
721 rom_desc);
722
723 if (!start_address) {
724 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
725 status = -ENODEV;
726 goto exit;
727 }
728
729 /* Read the descriptor data */
730 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
731 le16_to_cpu(rom_desc->Size), buffer);
732 if (status)
733 goto exit;
734
735 status = valid_csum(rom_desc, buffer);
736
737 desc = (struct edge_ti_manuf_descriptor *)buffer;
738 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
739 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
740 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
741 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
742 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
743 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
744
745exit:
746 kfree(rom_desc);
747 return status;
748}
749
750/* Build firmware header used for firmware update */
751static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
752{
753 __u8 *buffer;
754 int buffer_size;
755 int i;
756 int err;
757 __u8 cs = 0;
758 struct ti_i2c_desc *i2c_header;
759 struct ti_i2c_image_header *img_header;
760 struct ti_i2c_firmware_rec *firmware_rec;
761 const struct firmware *fw;
762 const char *fw_name = "edgeport/down3.bin";
763
764 /* In order to update the I2C firmware we must change the type 2 record
765 * to type 0xF2. This will force the UMP to come up in Boot Mode.
766 * Then while in boot mode, the driver will download the latest
767 * firmware (padded to 15.5k) into the UMP ram. And finally when the
768 * device comes back up in download mode the driver will cause the new
769 * firmware to be copied from the UMP Ram to I2C and the firmware will
770 * update the record type from 0xf2 to 0x02.
771 */
772
773 /* Allocate a 15.5k buffer + 2 bytes for version number
774 * (Firmware Record) */
775 buffer_size = (((1024 * 16) - 512 ) +
776 sizeof(struct ti_i2c_firmware_rec));
777
778 buffer = kmalloc(buffer_size, GFP_KERNEL);
779 if (!buffer)
780 return -ENOMEM;
781
782 // Set entire image of 0xffs
783 memset(buffer, 0xff, buffer_size);
784
785 err = request_firmware(&fw, fw_name, dev);
786 if (err) {
787 dev_err(dev, "Failed to load image \"%s\" err %d\n",
788 fw_name, err);
789 kfree(buffer);
790 return err;
791 }
792
793 /* Save Download Version Number */
794 OperationalMajorVersion = fw->data[0];
795 OperationalMinorVersion = fw->data[1];
796 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
797
798 /* Copy version number into firmware record */
799 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
800
801 firmware_rec->Ver_Major = OperationalMajorVersion;
802 firmware_rec->Ver_Minor = OperationalMinorVersion;
803
804 /* Pointer to fw_down memory image */
805 img_header = (struct ti_i2c_image_header *)&fw->data[4];
806
807 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
808 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
809 le16_to_cpu(img_header->Length));
810
811 release_firmware(fw);
812
813 for (i=0; i < buffer_size; i++) {
814 cs = (__u8)(cs + buffer[i]);
815 }
816
817 kfree(buffer);
818
819 /* Build new header */
820 i2c_header = (struct ti_i2c_desc *)header;
821 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
822
823 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
824 i2c_header->Size = cpu_to_le16(buffer_size);
825 i2c_header->CheckSum = cs;
826 firmware_rec->Ver_Major = OperationalMajorVersion;
827 firmware_rec->Ver_Minor = OperationalMinorVersion;
828
829 return 0;
830}
831
832/* Try to figure out what type of I2c we have */
833static int i2c_type_bootmode(struct edgeport_serial *serial)
834{
835 struct device *dev = &serial->serial->dev->dev;
836 int status;
837 u8 *data;
838
839 data = kmalloc(1, GFP_KERNEL);
840 if (!data)
841 return -ENOMEM;
842
843 /* Try to read type 2 */
844 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
845 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
846 if (status)
847 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
848 else
849 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
850 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
851 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
852 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
853 goto out;
854 }
855
856 /* Try to read type 3 */
857 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
858 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
859 if (status)
860 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
861 else
862 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
863 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
864 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
865 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
866 goto out;
867 }
868
869 dev_dbg(dev, "%s - Unknown\n", __func__);
870 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
871 status = -ENODEV;
872out:
873 kfree(data);
874 return status;
875}
876
877static int bulk_xfer(struct usb_serial *serial, void *buffer,
878 int length, int *num_sent)
879{
880 int status;
881
882 status = usb_bulk_msg(serial->dev,
883 usb_sndbulkpipe(serial->dev,
884 serial->port[0]->bulk_out_endpointAddress),
885 buffer, length, num_sent, 1000);
886 return status;
887}
888
889/* Download given firmware image to the device (IN BOOT MODE) */
890static int download_code(struct edgeport_serial *serial, __u8 *image,
891 int image_length)
892{
893 int status = 0;
894 int pos;
895 int transfer;
896 int done;
897
898 /* Transfer firmware image */
899 for (pos = 0; pos < image_length; ) {
900 /* Read the next buffer from file */
901 transfer = image_length - pos;
902 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
903 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
904
905 /* Transfer data */
906 status = bulk_xfer(serial->serial, &image[pos],
907 transfer, &done);
908 if (status)
909 break;
910 /* Advance buffer pointer */
911 pos += done;
912 }
913
914 return status;
915}
916
917/* FIXME!!! */
918static int config_boot_dev(struct usb_device *dev)
919{
920 return 0;
921}
922
923static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
924{
925 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
926}
927
928/**
929 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
930 *
931 * This routine downloads the main operating code into the TI5052, using the
932 * boot code already burned into E2PROM or ROM.
933 */
934static int download_fw(struct edgeport_serial *serial)
935{
936 struct device *dev = &serial->serial->dev->dev;
937 int status = 0;
938 int start_address;
939 struct edge_ti_manuf_descriptor *ti_manuf_desc;
940 struct usb_interface_descriptor *interface;
941 int download_cur_ver;
942 int download_new_ver;
943
944 /* This routine is entered by both the BOOT mode and the Download mode
945 * We can determine which code is running by the reading the config
946 * descriptor and if we have only one bulk pipe it is in boot mode
947 */
948 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
949
950 /* Default to type 2 i2c */
951 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
952
953 status = choose_config(serial->serial->dev);
954 if (status)
955 return status;
956
957 interface = &serial->serial->interface->cur_altsetting->desc;
958 if (!interface) {
959 dev_err(dev, "%s - no interface set, error!\n", __func__);
960 return -ENODEV;
961 }
962
963 /*
964 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
965 * if we have more than one endpoint we are definitely in download
966 * mode
967 */
968 if (interface->bNumEndpoints > 1)
969 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
970 else
971 /* Otherwise we will remain in configuring mode */
972 serial->product_info.TiMode = TI_MODE_CONFIGURING;
973
974 /********************************************************************/
975 /* Download Mode */
976 /********************************************************************/
977 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
978 struct ti_i2c_desc *rom_desc;
979
980 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
981
982 status = check_i2c_image(serial);
983 if (status) {
984 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
985 return status;
986 }
987
988 /* Validate Hardware version number
989 * Read Manufacturing Descriptor from TI Based Edgeport
990 */
991 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
992 if (!ti_manuf_desc)
993 return -ENOMEM;
994
995 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
996 if (status) {
997 kfree(ti_manuf_desc);
998 return status;
999 }
1000
1001 /* Check version number of ION descriptor */
1002 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1003 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1004 __func__, ti_cpu_rev(ti_manuf_desc));
1005 kfree(ti_manuf_desc);
1006 return -EINVAL;
1007 }
1008
1009 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1010 if (!rom_desc) {
1011 kfree(ti_manuf_desc);
1012 return -ENOMEM;
1013 }
1014
1015 /* Search for type 2 record (firmware record) */
1016 start_address = get_descriptor_addr(serial,
1017 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1018 if (start_address != 0) {
1019 struct ti_i2c_firmware_rec *firmware_version;
1020 u8 *record;
1021
1022 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1023
1024 firmware_version = kmalloc(sizeof(*firmware_version),
1025 GFP_KERNEL);
1026 if (!firmware_version) {
1027 kfree(rom_desc);
1028 kfree(ti_manuf_desc);
1029 return -ENOMEM;
1030 }
1031
1032 /* Validate version number
1033 * Read the descriptor data
1034 */
1035 status = read_rom(serial, start_address +
1036 sizeof(struct ti_i2c_desc),
1037 sizeof(struct ti_i2c_firmware_rec),
1038 (__u8 *)firmware_version);
1039 if (status) {
1040 kfree(firmware_version);
1041 kfree(rom_desc);
1042 kfree(ti_manuf_desc);
1043 return status;
1044 }
1045
1046 /* Check version number of download with current
1047 version in I2c */
1048 download_cur_ver = (firmware_version->Ver_Major << 8) +
1049 (firmware_version->Ver_Minor);
1050 download_new_ver = (OperationalMajorVersion << 8) +
1051 (OperationalMinorVersion);
1052
1053 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1054 __func__, firmware_version->Ver_Major,
1055 firmware_version->Ver_Minor,
1056 OperationalMajorVersion,
1057 OperationalMinorVersion);
1058
1059 /* Check if we have an old version in the I2C and
1060 update if necessary */
1061 if (download_cur_ver < download_new_ver) {
1062 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1063 __func__,
1064 firmware_version->Ver_Major,
1065 firmware_version->Ver_Minor,
1066 OperationalMajorVersion,
1067 OperationalMinorVersion);
1068
1069 record = kmalloc(1, GFP_KERNEL);
1070 if (!record) {
1071 kfree(firmware_version);
1072 kfree(rom_desc);
1073 kfree(ti_manuf_desc);
1074 return -ENOMEM;
1075 }
1076 /* In order to update the I2C firmware we must
1077 * change the type 2 record to type 0xF2. This
1078 * will force the UMP to come up in Boot Mode.
1079 * Then while in boot mode, the driver will
1080 * download the latest firmware (padded to
1081 * 15.5k) into the UMP ram. Finally when the
1082 * device comes back up in download mode the
1083 * driver will cause the new firmware to be
1084 * copied from the UMP Ram to I2C and the
1085 * firmware will update the record type from
1086 * 0xf2 to 0x02.
1087 */
1088 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1089
1090 /* Change the I2C Firmware record type to
1091 0xf2 to trigger an update */
1092 status = write_rom(serial, start_address,
1093 sizeof(*record), record);
1094 if (status) {
1095 kfree(record);
1096 kfree(firmware_version);
1097 kfree(rom_desc);
1098 kfree(ti_manuf_desc);
1099 return status;
1100 }
1101
1102 /* verify the write -- must do this in order
1103 * for write to complete before we do the
1104 * hardware reset
1105 */
1106 status = read_rom(serial,
1107 start_address,
1108 sizeof(*record),
1109 record);
1110 if (status) {
1111 kfree(record);
1112 kfree(firmware_version);
1113 kfree(rom_desc);
1114 kfree(ti_manuf_desc);
1115 return status;
1116 }
1117
1118 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1119 dev_err(dev, "%s - error resetting device\n", __func__);
1120 kfree(record);
1121 kfree(firmware_version);
1122 kfree(rom_desc);
1123 kfree(ti_manuf_desc);
1124 return -ENODEV;
1125 }
1126
1127 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1128
1129 /* Reset UMP -- Back to BOOT MODE */
1130 status = ti_vsend_sync(serial->serial->dev,
1131 UMPC_HARDWARE_RESET,
1132 0, 0, NULL, 0);
1133
1134 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1135
1136 /* return an error on purpose. */
1137 kfree(record);
1138 kfree(firmware_version);
1139 kfree(rom_desc);
1140 kfree(ti_manuf_desc);
1141 return -ENODEV;
1142 }
1143 kfree(firmware_version);
1144 }
1145 /* Search for type 0xF2 record (firmware blank record) */
1146 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1147#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1148 sizeof(struct ti_i2c_firmware_rec))
1149 __u8 *header;
1150 __u8 *vheader;
1151
1152 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1153 if (!header) {
1154 kfree(rom_desc);
1155 kfree(ti_manuf_desc);
1156 return -ENOMEM;
1157 }
1158
1159 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1160 if (!vheader) {
1161 kfree(header);
1162 kfree(rom_desc);
1163 kfree(ti_manuf_desc);
1164 return -ENOMEM;
1165 }
1166
1167 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1168
1169 /*
1170 * In order to update the I2C firmware we must change
1171 * the type 2 record to type 0xF2. This will force the
1172 * UMP to come up in Boot Mode. Then while in boot
1173 * mode, the driver will download the latest firmware
1174 * (padded to 15.5k) into the UMP ram. Finally when the
1175 * device comes back up in download mode the driver
1176 * will cause the new firmware to be copied from the
1177 * UMP Ram to I2C and the firmware will update the
1178 * record type from 0xf2 to 0x02.
1179 */
1180 status = build_i2c_fw_hdr(header, dev);
1181 if (status) {
1182 kfree(vheader);
1183 kfree(header);
1184 kfree(rom_desc);
1185 kfree(ti_manuf_desc);
1186 return -EINVAL;
1187 }
1188
1189 /* Update I2C with type 0xf2 record with correct
1190 size and checksum */
1191 status = write_rom(serial,
1192 start_address,
1193 HEADER_SIZE,
1194 header);
1195 if (status) {
1196 kfree(vheader);
1197 kfree(header);
1198 kfree(rom_desc);
1199 kfree(ti_manuf_desc);
1200 return -EINVAL;
1201 }
1202
1203 /* verify the write -- must do this in order for
1204 write to complete before we do the hardware reset */
1205 status = read_rom(serial, start_address,
1206 HEADER_SIZE, vheader);
1207
1208 if (status) {
1209 dev_dbg(dev, "%s - can't read header back\n", __func__);
1210 kfree(vheader);
1211 kfree(header);
1212 kfree(rom_desc);
1213 kfree(ti_manuf_desc);
1214 return status;
1215 }
1216 if (memcmp(vheader, header, HEADER_SIZE)) {
1217 dev_dbg(dev, "%s - write download record failed\n", __func__);
1218 kfree(vheader);
1219 kfree(header);
1220 kfree(rom_desc);
1221 kfree(ti_manuf_desc);
1222 return -EINVAL;
1223 }
1224
1225 kfree(vheader);
1226 kfree(header);
1227
1228 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1229
1230 /* Tell firmware to copy download image into I2C */
1231 status = ti_vsend_sync(serial->serial->dev,
1232 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1233
1234 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1235 if (status) {
1236 dev_err(dev,
1237 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1238 __func__);
1239 kfree(rom_desc);
1240 kfree(ti_manuf_desc);
1241 return status;
1242 }
1243 }
1244
1245 // The device is running the download code
1246 kfree(rom_desc);
1247 kfree(ti_manuf_desc);
1248 return 0;
1249 }
1250
1251 /********************************************************************/
1252 /* Boot Mode */
1253 /********************************************************************/
1254 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1255
1256 /* Configure the TI device so we can use the BULK pipes for download */
1257 status = config_boot_dev(serial->serial->dev);
1258 if (status)
1259 return status;
1260
1261 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1262 != USB_VENDOR_ID_ION) {
1263 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1264 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1265 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1266 goto stayinbootmode;
1267 }
1268
1269 /* We have an ION device (I2c Must be programmed)
1270 Determine I2C image type */
1271 if (i2c_type_bootmode(serial))
1272 goto stayinbootmode;
1273
1274 /* Check for ION Vendor ID and that the I2C is valid */
1275 if (!check_i2c_image(serial)) {
1276 struct ti_i2c_image_header *header;
1277 int i;
1278 __u8 cs = 0;
1279 __u8 *buffer;
1280 int buffer_size;
1281 int err;
1282 const struct firmware *fw;
1283 const char *fw_name = "edgeport/down3.bin";
1284
1285 /* Validate Hardware version number
1286 * Read Manufacturing Descriptor from TI Based Edgeport
1287 */
1288 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1289 if (!ti_manuf_desc)
1290 return -ENOMEM;
1291
1292 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1293 if (status) {
1294 kfree(ti_manuf_desc);
1295 goto stayinbootmode;
1296 }
1297
1298 /* Check for version 2 */
1299 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1300 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1301 __func__, ti_cpu_rev(ti_manuf_desc));
1302 kfree(ti_manuf_desc);
1303 goto stayinbootmode;
1304 }
1305
1306 kfree(ti_manuf_desc);
1307
1308 /*
1309 * In order to update the I2C firmware we must change the type
1310 * 2 record to type 0xF2. This will force the UMP to come up
1311 * in Boot Mode. Then while in boot mode, the driver will
1312 * download the latest firmware (padded to 15.5k) into the
1313 * UMP ram. Finally when the device comes back up in download
1314 * mode the driver will cause the new firmware to be copied
1315 * from the UMP Ram to I2C and the firmware will update the
1316 * record type from 0xf2 to 0x02.
1317 *
1318 * Do we really have to copy the whole firmware image,
1319 * or could we do this in place!
1320 */
1321
1322 /* Allocate a 15.5k buffer + 3 byte header */
1323 buffer_size = (((1024 * 16) - 512) +
1324 sizeof(struct ti_i2c_image_header));
1325 buffer = kmalloc(buffer_size, GFP_KERNEL);
1326 if (!buffer)
1327 return -ENOMEM;
1328
1329 /* Initialize the buffer to 0xff (pad the buffer) */
1330 memset(buffer, 0xff, buffer_size);
1331
1332 err = request_firmware(&fw, fw_name, dev);
1333 if (err) {
1334 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1335 fw_name, err);
1336 kfree(buffer);
1337 return err;
1338 }
1339 memcpy(buffer, &fw->data[4], fw->size - 4);
1340 release_firmware(fw);
1341
1342 for (i = sizeof(struct ti_i2c_image_header);
1343 i < buffer_size; i++) {
1344 cs = (__u8)(cs + buffer[i]);
1345 }
1346
1347 header = (struct ti_i2c_image_header *)buffer;
1348
1349 /* update length and checksum after padding */
1350 header->Length = cpu_to_le16((__u16)(buffer_size -
1351 sizeof(struct ti_i2c_image_header)));
1352 header->CheckSum = cs;
1353
1354 /* Download the operational code */
1355 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1356 status = download_code(serial, buffer, buffer_size);
1357
1358 kfree(buffer);
1359
1360 if (status) {
1361 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1362 return status;
1363 }
1364
1365 /* Device will reboot */
1366 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1367
1368 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1369
1370 /* return an error on purpose */
1371 return -ENODEV;
1372 }
1373
1374stayinbootmode:
1375 /* Eprom is invalid or blank stay in boot mode */
1376 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1377 serial->product_info.TiMode = TI_MODE_BOOT;
1378
1379 return 0;
1380}
1381
1382
1383static int ti_do_config(struct edgeport_port *port, int feature, int on)
1384{
1385 int port_number = port->port->port_number;
1386
1387 on = !!on; /* 1 or 0 not bitmask */
1388 return send_cmd(port->port->serial->dev,
1389 feature, (__u8)(UMPM_UART1_PORT + port_number),
1390 on, NULL, 0);
1391}
1392
1393
1394static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1395{
1396 int status = 0;
1397
1398 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1399
1400 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1401 if (status)
1402 return status;
1403 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1404 if (status)
1405 return status;
1406 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1407}
1408
1409/* Convert TI LSR to standard UART flags */
1410static __u8 map_line_status(__u8 ti_lsr)
1411{
1412 __u8 lsr = 0;
1413
1414#define MAP_FLAG(flagUmp, flagUart) \
1415 if (ti_lsr & flagUmp) \
1416 lsr |= flagUart;
1417
1418 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1419 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1420 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1421 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
1422 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1423 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1424
1425#undef MAP_FLAG
1426
1427 return lsr;
1428}
1429
1430static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1431{
1432 struct async_icount *icount;
1433 struct tty_struct *tty;
1434
1435 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1436
1437 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1438 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1439 icount = &edge_port->port->icount;
1440
1441 /* update input line counters */
1442 if (msr & EDGEPORT_MSR_DELTA_CTS)
1443 icount->cts++;
1444 if (msr & EDGEPORT_MSR_DELTA_DSR)
1445 icount->dsr++;
1446 if (msr & EDGEPORT_MSR_DELTA_CD)
1447 icount->dcd++;
1448 if (msr & EDGEPORT_MSR_DELTA_RI)
1449 icount->rng++;
1450 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1451 }
1452
1453 /* Save the new modem status */
1454 edge_port->shadow_msr = msr & 0xf0;
1455
1456 tty = tty_port_tty_get(&edge_port->port->port);
1457 /* handle CTS flow control */
1458 if (tty && C_CRTSCTS(tty)) {
1459 if (msr & EDGEPORT_MSR_CTS) {
1460 tty->hw_stopped = 0;
1461 tty_wakeup(tty);
1462 } else {
1463 tty->hw_stopped = 1;
1464 }
1465 }
1466 tty_kref_put(tty);
1467}
1468
1469static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1470 __u8 lsr, __u8 data)
1471{
1472 struct async_icount *icount;
1473 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1474 LSR_FRM_ERR | LSR_BREAK));
1475
1476 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1477
1478 edge_port->shadow_lsr = lsr;
1479
1480 if (new_lsr & LSR_BREAK)
1481 /*
1482 * Parity and Framing errors only count if they
1483 * occur exclusive of a break being received.
1484 */
1485 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1486
1487 /* Place LSR data byte into Rx buffer */
1488 if (lsr_data)
1489 edge_tty_recv(edge_port->port, &data, 1);
1490
1491 /* update input line counters */
1492 icount = &edge_port->port->icount;
1493 if (new_lsr & LSR_BREAK)
1494 icount->brk++;
1495 if (new_lsr & LSR_OVER_ERR)
1496 icount->overrun++;
1497 if (new_lsr & LSR_PAR_ERR)
1498 icount->parity++;
1499 if (new_lsr & LSR_FRM_ERR)
1500 icount->frame++;
1501}
1502
1503
1504static void edge_interrupt_callback(struct urb *urb)
1505{
1506 struct edgeport_serial *edge_serial = urb->context;
1507 struct usb_serial_port *port;
1508 struct edgeport_port *edge_port;
1509 struct device *dev;
1510 unsigned char *data = urb->transfer_buffer;
1511 int length = urb->actual_length;
1512 int port_number;
1513 int function;
1514 int retval;
1515 __u8 lsr;
1516 __u8 msr;
1517 int status = urb->status;
1518
1519 switch (status) {
1520 case 0:
1521 /* success */
1522 break;
1523 case -ECONNRESET:
1524 case -ENOENT:
1525 case -ESHUTDOWN:
1526 /* this urb is terminated, clean up */
1527 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1528 __func__, status);
1529 return;
1530 default:
1531 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1532 "%d\n", __func__, status);
1533 goto exit;
1534 }
1535
1536 if (!length) {
1537 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1538 goto exit;
1539 }
1540
1541 dev = &edge_serial->serial->dev->dev;
1542 usb_serial_debug_data(dev, __func__, length, data);
1543
1544 if (length != 2) {
1545 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1546 goto exit;
1547 }
1548
1549 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1550 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1551 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1552 port_number, function, data[1]);
1553 port = edge_serial->serial->port[port_number];
1554 edge_port = usb_get_serial_port_data(port);
1555 if (!edge_port) {
1556 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1557 return;
1558 }
1559 switch (function) {
1560 case TIUMP_INTERRUPT_CODE_LSR:
1561 lsr = map_line_status(data[1]);
1562 if (lsr & UMP_UART_LSR_DATA_MASK) {
1563 /* Save the LSR event for bulk read
1564 completion routine */
1565 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1566 __func__, port_number, lsr);
1567 edge_port->lsr_event = 1;
1568 edge_port->lsr_mask = lsr;
1569 } else {
1570 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1571 __func__, port_number, lsr);
1572 handle_new_lsr(edge_port, 0, lsr, 0);
1573 }
1574 break;
1575
1576 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1577 /* Copy MSR from UMP */
1578 msr = data[1];
1579 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1580 __func__, port_number, msr);
1581 handle_new_msr(edge_port, msr);
1582 break;
1583
1584 default:
1585 dev_err(&urb->dev->dev,
1586 "%s - Unknown Interrupt code from UMP %x\n",
1587 __func__, data[1]);
1588 break;
1589
1590 }
1591
1592exit:
1593 retval = usb_submit_urb(urb, GFP_ATOMIC);
1594 if (retval)
1595 dev_err(&urb->dev->dev,
1596 "%s - usb_submit_urb failed with result %d\n",
1597 __func__, retval);
1598}
1599
1600static void edge_bulk_in_callback(struct urb *urb)
1601{
1602 struct edgeport_port *edge_port = urb->context;
1603 struct device *dev = &edge_port->port->dev;
1604 unsigned char *data = urb->transfer_buffer;
1605 int retval = 0;
1606 int port_number;
1607 int status = urb->status;
1608
1609 switch (status) {
1610 case 0:
1611 /* success */
1612 break;
1613 case -ECONNRESET:
1614 case -ENOENT:
1615 case -ESHUTDOWN:
1616 /* this urb is terminated, clean up */
1617 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1618 return;
1619 default:
1620 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1621 }
1622
1623 if (status == -EPIPE)
1624 goto exit;
1625
1626 if (status) {
1627 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1628 return;
1629 }
1630
1631 port_number = edge_port->port->port_number;
1632
1633 if (edge_port->lsr_event) {
1634 edge_port->lsr_event = 0;
1635 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1636 __func__, port_number, edge_port->lsr_mask, *data);
1637 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1638 /* Adjust buffer length/pointer */
1639 --urb->actual_length;
1640 ++data;
1641 }
1642
1643 if (urb->actual_length) {
1644 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1645 if (edge_port->close_pending)
1646 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1647 __func__);
1648 else
1649 edge_tty_recv(edge_port->port, data,
1650 urb->actual_length);
1651 edge_port->port->icount.rx += urb->actual_length;
1652 }
1653
1654exit:
1655 /* continue read unless stopped */
1656 spin_lock(&edge_port->ep_lock);
1657 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1658 retval = usb_submit_urb(urb, GFP_ATOMIC);
1659 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1660 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1661
1662 spin_unlock(&edge_port->ep_lock);
1663 if (retval)
1664 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1665}
1666
1667static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1668 int length)
1669{
1670 int queued;
1671
1672 queued = tty_insert_flip_string(&port->port, data, length);
1673 if (queued < length)
1674 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1675 __func__, length - queued);
1676 tty_flip_buffer_push(&port->port);
1677}
1678
1679static void edge_bulk_out_callback(struct urb *urb)
1680{
1681 struct usb_serial_port *port = urb->context;
1682 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1683 int status = urb->status;
1684 struct tty_struct *tty;
1685
1686 edge_port->ep_write_urb_in_use = 0;
1687
1688 switch (status) {
1689 case 0:
1690 /* success */
1691 break;
1692 case -ECONNRESET:
1693 case -ENOENT:
1694 case -ESHUTDOWN:
1695 /* this urb is terminated, clean up */
1696 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1697 __func__, status);
1698 return;
1699 default:
1700 dev_err_console(port, "%s - nonzero write bulk status "
1701 "received: %d\n", __func__, status);
1702 }
1703
1704 /* send any buffered data */
1705 tty = tty_port_tty_get(&port->port);
1706 edge_send(port, tty);
1707 tty_kref_put(tty);
1708}
1709
1710static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1711{
1712 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1713 struct edgeport_serial *edge_serial;
1714 struct usb_device *dev;
1715 struct urb *urb;
1716 int port_number;
1717 int status;
1718 u16 open_settings;
1719 u8 transaction_timeout;
1720
1721 if (edge_port == NULL)
1722 return -ENODEV;
1723
1724 port_number = port->port_number;
1725
1726 dev = port->serial->dev;
1727
1728 /* turn off loopback */
1729 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1730 if (status) {
1731 dev_err(&port->dev,
1732 "%s - cannot send clear loopback command, %d\n",
1733 __func__, status);
1734 return status;
1735 }
1736
1737 /* set up the port settings */
1738 if (tty)
1739 edge_set_termios(tty, port, &tty->termios);
1740
1741 /* open up the port */
1742
1743 /* milliseconds to timeout for DMA transfer */
1744 transaction_timeout = 2;
1745
1746 edge_port->ump_read_timeout =
1747 max(20, ((transaction_timeout * 3) / 2));
1748
1749 /* milliseconds to timeout for DMA transfer */
1750 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1751 UMP_PIPE_TRANS_TIMEOUT_ENA |
1752 (transaction_timeout << 2));
1753
1754 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1755
1756 /* Tell TI to open and start the port */
1757 status = send_cmd(dev, UMPC_OPEN_PORT,
1758 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1759 if (status) {
1760 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1761 __func__, status);
1762 return status;
1763 }
1764
1765 /* Start the DMA? */
1766 status = send_cmd(dev, UMPC_START_PORT,
1767 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1768 if (status) {
1769 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1770 __func__, status);
1771 return status;
1772 }
1773
1774 /* Clear TX and RX buffers in UMP */
1775 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1776 if (status) {
1777 dev_err(&port->dev,
1778 "%s - cannot send clear buffers command, %d\n",
1779 __func__, status);
1780 return status;
1781 }
1782
1783 /* Read Initial MSR */
1784 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1785 (__u16)(UMPM_UART1_PORT + port_number),
1786 &edge_port->shadow_msr, 1);
1787 if (status) {
1788 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1789 __func__, status);
1790 return status;
1791 }
1792
1793 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1794
1795 /* Set Initial MCR */
1796 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1797 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1798
1799 edge_serial = edge_port->edge_serial;
1800 if (mutex_lock_interruptible(&edge_serial->es_lock))
1801 return -ERESTARTSYS;
1802 if (edge_serial->num_ports_open == 0) {
1803 /* we are the first port to open, post the interrupt urb */
1804 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1805 if (!urb) {
1806 dev_err(&port->dev,
1807 "%s - no interrupt urb present, exiting\n",
1808 __func__);
1809 status = -EINVAL;
1810 goto release_es_lock;
1811 }
1812 urb->context = edge_serial;
1813 status = usb_submit_urb(urb, GFP_KERNEL);
1814 if (status) {
1815 dev_err(&port->dev,
1816 "%s - usb_submit_urb failed with value %d\n",
1817 __func__, status);
1818 goto release_es_lock;
1819 }
1820 }
1821
1822 /*
1823 * reset the data toggle on the bulk endpoints to work around bug in
1824 * host controllers where things get out of sync some times
1825 */
1826 usb_clear_halt(dev, port->write_urb->pipe);
1827 usb_clear_halt(dev, port->read_urb->pipe);
1828
1829 /* start up our bulk read urb */
1830 urb = port->read_urb;
1831 if (!urb) {
1832 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1833 __func__);
1834 status = -EINVAL;
1835 goto unlink_int_urb;
1836 }
1837 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1838 urb->context = edge_port;
1839 status = usb_submit_urb(urb, GFP_KERNEL);
1840 if (status) {
1841 dev_err(&port->dev,
1842 "%s - read bulk usb_submit_urb failed with value %d\n",
1843 __func__, status);
1844 goto unlink_int_urb;
1845 }
1846
1847 ++edge_serial->num_ports_open;
1848
1849 goto release_es_lock;
1850
1851unlink_int_urb:
1852 if (edge_port->edge_serial->num_ports_open == 0)
1853 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1854release_es_lock:
1855 mutex_unlock(&edge_serial->es_lock);
1856 return status;
1857}
1858
1859static void edge_close(struct usb_serial_port *port)
1860{
1861 struct edgeport_serial *edge_serial;
1862 struct edgeport_port *edge_port;
1863 struct usb_serial *serial = port->serial;
1864 unsigned long flags;
1865 int port_number;
1866
1867 edge_serial = usb_get_serial_data(port->serial);
1868 edge_port = usb_get_serial_port_data(port);
1869 if (edge_serial == NULL || edge_port == NULL)
1870 return;
1871
1872 /* The bulkreadcompletion routine will check
1873 * this flag and dump add read data */
1874 edge_port->close_pending = 1;
1875
1876 usb_kill_urb(port->read_urb);
1877 usb_kill_urb(port->write_urb);
1878 edge_port->ep_write_urb_in_use = 0;
1879 spin_lock_irqsave(&edge_port->ep_lock, flags);
1880 kfifo_reset_out(&port->write_fifo);
1881 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1882
1883 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1884 port_number = port->port_number;
1885 send_cmd(serial->dev, UMPC_CLOSE_PORT,
1886 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1887
1888 mutex_lock(&edge_serial->es_lock);
1889 --edge_port->edge_serial->num_ports_open;
1890 if (edge_port->edge_serial->num_ports_open <= 0) {
1891 /* last port is now closed, let's shut down our interrupt urb */
1892 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1893 edge_port->edge_serial->num_ports_open = 0;
1894 }
1895 mutex_unlock(&edge_serial->es_lock);
1896 edge_port->close_pending = 0;
1897}
1898
1899static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1900 const unsigned char *data, int count)
1901{
1902 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1903
1904 if (count == 0) {
1905 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1906 return 0;
1907 }
1908
1909 if (edge_port == NULL)
1910 return -ENODEV;
1911 if (edge_port->close_pending == 1)
1912 return -ENODEV;
1913
1914 count = kfifo_in_locked(&port->write_fifo, data, count,
1915 &edge_port->ep_lock);
1916 edge_send(port, tty);
1917
1918 return count;
1919}
1920
1921static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
1922{
1923 int count, result;
1924 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1925 unsigned long flags;
1926
1927 spin_lock_irqsave(&edge_port->ep_lock, flags);
1928
1929 if (edge_port->ep_write_urb_in_use) {
1930 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1931 return;
1932 }
1933
1934 count = kfifo_out(&port->write_fifo,
1935 port->write_urb->transfer_buffer,
1936 port->bulk_out_size);
1937
1938 if (count == 0) {
1939 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1940 return;
1941 }
1942
1943 edge_port->ep_write_urb_in_use = 1;
1944
1945 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1946
1947 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1948
1949 /* set up our urb */
1950 port->write_urb->transfer_buffer_length = count;
1951
1952 /* send the data out the bulk port */
1953 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1954 if (result) {
1955 dev_err_console(port,
1956 "%s - failed submitting write urb, error %d\n",
1957 __func__, result);
1958 edge_port->ep_write_urb_in_use = 0;
1959 /* TODO: reschedule edge_send */
1960 } else
1961 edge_port->port->icount.tx += count;
1962
1963 /* wakeup any process waiting for writes to complete */
1964 /* there is now more room in the buffer for new writes */
1965 if (tty)
1966 tty_wakeup(tty);
1967}
1968
1969static int edge_write_room(struct tty_struct *tty)
1970{
1971 struct usb_serial_port *port = tty->driver_data;
1972 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1973 int room = 0;
1974 unsigned long flags;
1975
1976 if (edge_port == NULL)
1977 return 0;
1978 if (edge_port->close_pending == 1)
1979 return 0;
1980
1981 spin_lock_irqsave(&edge_port->ep_lock, flags);
1982 room = kfifo_avail(&port->write_fifo);
1983 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1984
1985 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1986 return room;
1987}
1988
1989static int edge_chars_in_buffer(struct tty_struct *tty)
1990{
1991 struct usb_serial_port *port = tty->driver_data;
1992 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1993 int chars = 0;
1994 unsigned long flags;
1995 if (edge_port == NULL)
1996 return 0;
1997
1998 spin_lock_irqsave(&edge_port->ep_lock, flags);
1999 chars = kfifo_len(&port->write_fifo);
2000 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2001
2002 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2003 return chars;
2004}
2005
2006static bool edge_tx_empty(struct usb_serial_port *port)
2007{
2008 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2009 int ret;
2010
2011 ret = tx_active(edge_port);
2012 if (ret > 0)
2013 return false;
2014
2015 return true;
2016}
2017
2018static void edge_throttle(struct tty_struct *tty)
2019{
2020 struct usb_serial_port *port = tty->driver_data;
2021 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2022 int status;
2023
2024 if (edge_port == NULL)
2025 return;
2026
2027 /* if we are implementing XON/XOFF, send the stop character */
2028 if (I_IXOFF(tty)) {
2029 unsigned char stop_char = STOP_CHAR(tty);
2030 status = edge_write(tty, port, &stop_char, 1);
2031 if (status <= 0) {
2032 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2033 }
2034 }
2035
2036 /* if we are implementing RTS/CTS, stop reads */
2037 /* and the Edgeport will clear the RTS line */
2038 if (C_CRTSCTS(tty))
2039 stop_read(edge_port);
2040
2041}
2042
2043static void edge_unthrottle(struct tty_struct *tty)
2044{
2045 struct usb_serial_port *port = tty->driver_data;
2046 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2047 int status;
2048
2049 if (edge_port == NULL)
2050 return;
2051
2052 /* if we are implementing XON/XOFF, send the start character */
2053 if (I_IXOFF(tty)) {
2054 unsigned char start_char = START_CHAR(tty);
2055 status = edge_write(tty, port, &start_char, 1);
2056 if (status <= 0) {
2057 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2058 }
2059 }
2060 /* if we are implementing RTS/CTS, restart reads */
2061 /* are the Edgeport will assert the RTS line */
2062 if (C_CRTSCTS(tty)) {
2063 status = restart_read(edge_port);
2064 if (status)
2065 dev_err(&port->dev,
2066 "%s - read bulk usb_submit_urb failed: %d\n",
2067 __func__, status);
2068 }
2069
2070}
2071
2072static void stop_read(struct edgeport_port *edge_port)
2073{
2074 unsigned long flags;
2075
2076 spin_lock_irqsave(&edge_port->ep_lock, flags);
2077
2078 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2079 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2080 edge_port->shadow_mcr &= ~MCR_RTS;
2081
2082 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2083}
2084
2085static int restart_read(struct edgeport_port *edge_port)
2086{
2087 struct urb *urb;
2088 int status = 0;
2089 unsigned long flags;
2090
2091 spin_lock_irqsave(&edge_port->ep_lock, flags);
2092
2093 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2094 urb = edge_port->port->read_urb;
2095 status = usb_submit_urb(urb, GFP_ATOMIC);
2096 }
2097 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2098 edge_port->shadow_mcr |= MCR_RTS;
2099
2100 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2101
2102 return status;
2103}
2104
2105static void change_port_settings(struct tty_struct *tty,
2106 struct edgeport_port *edge_port, struct ktermios *old_termios)
2107{
2108 struct device *dev = &edge_port->port->dev;
2109 struct ump_uart_config *config;
2110 int baud;
2111 unsigned cflag;
2112 int status;
2113 int port_number = edge_port->port->port_number;
2114
2115 config = kmalloc (sizeof (*config), GFP_KERNEL);
2116 if (!config) {
2117 tty->termios = *old_termios;
2118 return;
2119 }
2120
2121 cflag = tty->termios.c_cflag;
2122
2123 config->wFlags = 0;
2124
2125 /* These flags must be set */
2126 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2127 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2128 config->bUartMode = (__u8)(edge_port->bUartMode);
2129
2130 switch (cflag & CSIZE) {
2131 case CS5:
2132 config->bDataBits = UMP_UART_CHAR5BITS;
2133 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2134 break;
2135 case CS6:
2136 config->bDataBits = UMP_UART_CHAR6BITS;
2137 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2138 break;
2139 case CS7:
2140 config->bDataBits = UMP_UART_CHAR7BITS;
2141 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2142 break;
2143 default:
2144 case CS8:
2145 config->bDataBits = UMP_UART_CHAR8BITS;
2146 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2147 break;
2148 }
2149
2150 if (cflag & PARENB) {
2151 if (cflag & PARODD) {
2152 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2153 config->bParity = UMP_UART_ODDPARITY;
2154 dev_dbg(dev, "%s - parity = odd\n", __func__);
2155 } else {
2156 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2157 config->bParity = UMP_UART_EVENPARITY;
2158 dev_dbg(dev, "%s - parity = even\n", __func__);
2159 }
2160 } else {
2161 config->bParity = UMP_UART_NOPARITY;
2162 dev_dbg(dev, "%s - parity = none\n", __func__);
2163 }
2164
2165 if (cflag & CSTOPB) {
2166 config->bStopBits = UMP_UART_STOPBIT2;
2167 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2168 } else {
2169 config->bStopBits = UMP_UART_STOPBIT1;
2170 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2171 }
2172
2173 /* figure out the flow control settings */
2174 if (cflag & CRTSCTS) {
2175 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2176 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2177 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2178 } else {
2179 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2180 tty->hw_stopped = 0;
2181 restart_read(edge_port);
2182 }
2183
2184 /* if we are implementing XON/XOFF, set the start and stop
2185 character in the device */
2186 config->cXon = START_CHAR(tty);
2187 config->cXoff = STOP_CHAR(tty);
2188
2189 /* if we are implementing INBOUND XON/XOFF */
2190 if (I_IXOFF(tty)) {
2191 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2192 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2193 __func__, config->cXon, config->cXoff);
2194 } else
2195 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2196
2197 /* if we are implementing OUTBOUND XON/XOFF */
2198 if (I_IXON(tty)) {
2199 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2200 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2201 __func__, config->cXon, config->cXoff);
2202 } else
2203 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2204
2205 tty->termios.c_cflag &= ~CMSPAR;
2206
2207 /* Round the baud rate */
2208 baud = tty_get_baud_rate(tty);
2209 if (!baud) {
2210 /* pick a default, any default... */
2211 baud = 9600;
2212 } else
2213 tty_encode_baud_rate(tty, baud, baud);
2214
2215 edge_port->baud_rate = baud;
2216 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2217
2218 /* FIXME: Recompute actual baud from divisor here */
2219
2220 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2221
2222 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2223 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2224 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2225 dev_dbg(dev, "bParity: %d\n", config->bParity);
2226 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2227 dev_dbg(dev, "cXon: %d\n", config->cXon);
2228 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2229 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
2230
2231 /* move the word values into big endian mode */
2232 cpu_to_be16s(&config->wFlags);
2233 cpu_to_be16s(&config->wBaudRate);
2234
2235 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2236 (__u8)(UMPM_UART1_PORT + port_number),
2237 0, (__u8 *)config, sizeof(*config));
2238 if (status)
2239 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2240 __func__, status);
2241 kfree(config);
2242}
2243
2244static void edge_set_termios(struct tty_struct *tty,
2245 struct usb_serial_port *port, struct ktermios *old_termios)
2246{
2247 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2248 unsigned int cflag;
2249
2250 cflag = tty->termios.c_cflag;
2251
2252 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2253 tty->termios.c_cflag, tty->termios.c_iflag);
2254 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2255 old_termios->c_cflag, old_termios->c_iflag);
2256
2257 if (edge_port == NULL)
2258 return;
2259 /* change the port settings to the new ones specified */
2260 change_port_settings(tty, edge_port, old_termios);
2261}
2262
2263static int edge_tiocmset(struct tty_struct *tty,
2264 unsigned int set, unsigned int clear)
2265{
2266 struct usb_serial_port *port = tty->driver_data;
2267 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2268 unsigned int mcr;
2269 unsigned long flags;
2270
2271 spin_lock_irqsave(&edge_port->ep_lock, flags);
2272 mcr = edge_port->shadow_mcr;
2273 if (set & TIOCM_RTS)
2274 mcr |= MCR_RTS;
2275 if (set & TIOCM_DTR)
2276 mcr |= MCR_DTR;
2277 if (set & TIOCM_LOOP)
2278 mcr |= MCR_LOOPBACK;
2279
2280 if (clear & TIOCM_RTS)
2281 mcr &= ~MCR_RTS;
2282 if (clear & TIOCM_DTR)
2283 mcr &= ~MCR_DTR;
2284 if (clear & TIOCM_LOOP)
2285 mcr &= ~MCR_LOOPBACK;
2286
2287 edge_port->shadow_mcr = mcr;
2288 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2289
2290 restore_mcr(edge_port, mcr);
2291 return 0;
2292}
2293
2294static int edge_tiocmget(struct tty_struct *tty)
2295{
2296 struct usb_serial_port *port = tty->driver_data;
2297 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2298 unsigned int result = 0;
2299 unsigned int msr;
2300 unsigned int mcr;
2301 unsigned long flags;
2302
2303 spin_lock_irqsave(&edge_port->ep_lock, flags);
2304
2305 msr = edge_port->shadow_msr;
2306 mcr = edge_port->shadow_mcr;
2307 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2308 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2309 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2310 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2311 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2312 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2313
2314
2315 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2316 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2317
2318 return result;
2319}
2320
2321static int get_serial_info(struct edgeport_port *edge_port,
2322 struct serial_struct __user *retinfo)
2323{
2324 struct serial_struct tmp;
2325 unsigned cwait;
2326
2327 if (!retinfo)
2328 return -EFAULT;
2329
2330 cwait = edge_port->port->port.closing_wait;
2331 if (cwait != ASYNC_CLOSING_WAIT_NONE)
2332 cwait = jiffies_to_msecs(cwait) / 10;
2333
2334 memset(&tmp, 0, sizeof(tmp));
2335
2336 tmp.type = PORT_16550A;
2337 tmp.line = edge_port->port->minor;
2338 tmp.port = edge_port->port->port_number;
2339 tmp.irq = 0;
2340 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2341 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2342 tmp.baud_base = 9600;
2343 tmp.close_delay = 5*HZ;
2344 tmp.closing_wait = cwait;
2345
2346 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2347 return -EFAULT;
2348 return 0;
2349}
2350
2351static int edge_ioctl(struct tty_struct *tty,
2352 unsigned int cmd, unsigned long arg)
2353{
2354 struct usb_serial_port *port = tty->driver_data;
2355 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2356
2357 switch (cmd) {
2358 case TIOCGSERIAL:
2359 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2360 return get_serial_info(edge_port,
2361 (struct serial_struct __user *) arg);
2362 }
2363 return -ENOIOCTLCMD;
2364}
2365
2366static void edge_break(struct tty_struct *tty, int break_state)
2367{
2368 struct usb_serial_port *port = tty->driver_data;
2369 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2370 int status;
2371 int bv = 0; /* Off */
2372
2373 if (break_state == -1)
2374 bv = 1; /* On */
2375 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2376 if (status)
2377 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2378 __func__, status);
2379}
2380
2381static int edge_startup(struct usb_serial *serial)
2382{
2383 struct edgeport_serial *edge_serial;
2384 int status;
2385
2386 /* create our private serial structure */
2387 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2388 if (!edge_serial)
2389 return -ENOMEM;
2390
2391 mutex_init(&edge_serial->es_lock);
2392 edge_serial->serial = serial;
2393 usb_set_serial_data(serial, edge_serial);
2394
2395 status = download_fw(edge_serial);
2396 if (status) {
2397 kfree(edge_serial);
2398 return status;
2399 }
2400
2401 return 0;
2402}
2403
2404static void edge_disconnect(struct usb_serial *serial)
2405{
2406}
2407
2408static void edge_release(struct usb_serial *serial)
2409{
2410 kfree(usb_get_serial_data(serial));
2411}
2412
2413static int edge_port_probe(struct usb_serial_port *port)
2414{
2415 struct edgeport_port *edge_port;
2416 int ret;
2417
2418 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2419 if (!edge_port)
2420 return -ENOMEM;
2421
2422 spin_lock_init(&edge_port->ep_lock);
2423 edge_port->port = port;
2424 edge_port->edge_serial = usb_get_serial_data(port->serial);
2425 edge_port->bUartMode = default_uart_mode;
2426
2427 switch (port->port_number) {
2428 case 0:
2429 edge_port->uart_base = UMPMEM_BASE_UART1;
2430 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2431 break;
2432 case 1:
2433 edge_port->uart_base = UMPMEM_BASE_UART2;
2434 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2435 break;
2436 default:
2437 dev_err(&port->dev, "unknown port number\n");
2438 ret = -ENODEV;
2439 goto err;
2440 }
2441
2442 dev_dbg(&port->dev,
2443 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2444 __func__, port->port_number, edge_port->uart_base,
2445 edge_port->dma_address);
2446
2447 usb_set_serial_port_data(port, edge_port);
2448
2449 ret = edge_create_sysfs_attrs(port);
2450 if (ret)
2451 goto err;
2452
2453 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2454 port->port.drain_delay = 1;
2455
2456 return 0;
2457err:
2458 kfree(edge_port);
2459
2460 return ret;
2461}
2462
2463static int edge_port_remove(struct usb_serial_port *port)
2464{
2465 struct edgeport_port *edge_port;
2466
2467 edge_port = usb_get_serial_port_data(port);
2468 edge_remove_sysfs_attrs(port);
2469 kfree(edge_port);
2470
2471 return 0;
2472}
2473
2474/* Sysfs Attributes */
2475
2476static ssize_t uart_mode_show(struct device *dev,
2477 struct device_attribute *attr, char *buf)
2478{
2479 struct usb_serial_port *port = to_usb_serial_port(dev);
2480 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2481
2482 return sprintf(buf, "%d\n", edge_port->bUartMode);
2483}
2484
2485static ssize_t uart_mode_store(struct device *dev,
2486 struct device_attribute *attr, const char *valbuf, size_t count)
2487{
2488 struct usb_serial_port *port = to_usb_serial_port(dev);
2489 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2490 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2491
2492 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2493
2494 if (v < 256)
2495 edge_port->bUartMode = v;
2496 else
2497 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2498
2499 return count;
2500}
2501static DEVICE_ATTR_RW(uart_mode);
2502
2503static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2504{
2505 return device_create_file(&port->dev, &dev_attr_uart_mode);
2506}
2507
2508static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2509{
2510 device_remove_file(&port->dev, &dev_attr_uart_mode);
2511 return 0;
2512}
2513
2514
2515static struct usb_serial_driver edgeport_1port_device = {
2516 .driver = {
2517 .owner = THIS_MODULE,
2518 .name = "edgeport_ti_1",
2519 },
2520 .description = "Edgeport TI 1 port adapter",
2521 .id_table = edgeport_1port_id_table,
2522 .num_ports = 1,
2523 .open = edge_open,
2524 .close = edge_close,
2525 .throttle = edge_throttle,
2526 .unthrottle = edge_unthrottle,
2527 .attach = edge_startup,
2528 .disconnect = edge_disconnect,
2529 .release = edge_release,
2530 .port_probe = edge_port_probe,
2531 .port_remove = edge_port_remove,
2532 .ioctl = edge_ioctl,
2533 .set_termios = edge_set_termios,
2534 .tiocmget = edge_tiocmget,
2535 .tiocmset = edge_tiocmset,
2536 .tiocmiwait = usb_serial_generic_tiocmiwait,
2537 .get_icount = usb_serial_generic_get_icount,
2538 .write = edge_write,
2539 .write_room = edge_write_room,
2540 .chars_in_buffer = edge_chars_in_buffer,
2541 .tx_empty = edge_tx_empty,
2542 .break_ctl = edge_break,
2543 .read_int_callback = edge_interrupt_callback,
2544 .read_bulk_callback = edge_bulk_in_callback,
2545 .write_bulk_callback = edge_bulk_out_callback,
2546};
2547
2548static struct usb_serial_driver edgeport_2port_device = {
2549 .driver = {
2550 .owner = THIS_MODULE,
2551 .name = "edgeport_ti_2",
2552 },
2553 .description = "Edgeport TI 2 port adapter",
2554 .id_table = edgeport_2port_id_table,
2555 .num_ports = 2,
2556 .open = edge_open,
2557 .close = edge_close,
2558 .throttle = edge_throttle,
2559 .unthrottle = edge_unthrottle,
2560 .attach = edge_startup,
2561 .disconnect = edge_disconnect,
2562 .release = edge_release,
2563 .port_probe = edge_port_probe,
2564 .port_remove = edge_port_remove,
2565 .ioctl = edge_ioctl,
2566 .set_termios = edge_set_termios,
2567 .tiocmget = edge_tiocmget,
2568 .tiocmset = edge_tiocmset,
2569 .tiocmiwait = usb_serial_generic_tiocmiwait,
2570 .get_icount = usb_serial_generic_get_icount,
2571 .write = edge_write,
2572 .write_room = edge_write_room,
2573 .chars_in_buffer = edge_chars_in_buffer,
2574 .tx_empty = edge_tx_empty,
2575 .break_ctl = edge_break,
2576 .read_int_callback = edge_interrupt_callback,
2577 .read_bulk_callback = edge_bulk_in_callback,
2578 .write_bulk_callback = edge_bulk_out_callback,
2579};
2580
2581static struct usb_serial_driver * const serial_drivers[] = {
2582 &edgeport_1port_device, &edgeport_2port_device, NULL
2583};
2584
2585module_usb_serial_driver(serial_drivers, id_table_combined);
2586
2587MODULE_AUTHOR(DRIVER_AUTHOR);
2588MODULE_DESCRIPTION(DRIVER_DESC);
2589MODULE_LICENSE("GPL");
2590MODULE_FIRMWARE("edgeport/down3.bin");
2591
2592module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2593MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2594
2595module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2596MODULE_PARM_DESC(ignore_cpu_rev,
2597 "Ignore the cpu revision when connecting to a device");
2598
2599module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2600MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");