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Merge 3.8-rc4 into usb-next
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / io_ti.c
CommitLineData
1da177e4
LT		 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>.
1da177e4
LT		 18 */
19
1da177e4
LT		 20#include <linux/kernel.h>
21#include <linux/jiffies.h>
22#include <linux/errno.h>
23#include <linux/init.h>
24#include <linux/slab.h>
25#include <linux/tty.h>
26#include <linux/tty_driver.h>
27#include <linux/tty_flip.h>
28#include <linux/module.h>
29#include <linux/spinlock.h>
241ca64f 30#include <linux/mutex.h>
1da177e4 31#include <linux/serial.h>
d733cec1 32#include <linux/kfifo.h>
1da177e4 33#include <linux/ioctl.h>
d12b219a 34#include <linux/firmware.h>
2742fd88 35#include <linux/uaccess.h>
1da177e4 36#include <linux/usb.h>
a969888c 37#include <linux/usb/serial.h>
1da177e4 38
1da177e4
LT		 39#include "io_16654.h"
40#include "io_usbvend.h"
41#include "io_ti.h"
42
1da177e4
LT		 43#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
44#define DRIVER_DESC "Edgeport USB Serial Driver"
45
1da177e4
LT		 46#define EPROM_PAGE_SIZE 64
47
48
1da177e4
LT		 49/* different hardware types */
50#define HARDWARE_TYPE_930 0
51#define HARDWARE_TYPE_TIUMP 1
52
2742fd88
AC		 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 */
1da177e4
LT		 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
1da177e4
LT		 65#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
66
67#define EDGE_OUT_BUF_SIZE 1024
68
69
70/* Product information read from the Edgeport */
2742fd88
AC		 71struct product_info {
72 int TiMode; /* Current TI Mode */
73 __u8 hardware_type; /* Type of hardware */
1da177e4
LT		 74} __attribute__((packed));
75
1da177e4
LT		 76struct edgeport_port {
77 __u16 uart_base;
78 __u16 dma_address;
79 __u8 shadow_msr;
80 __u8 shadow_mcr;
81 __u8 shadow_lsr;
82 __u8 lsr_mask;
19af5cdb 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will
1da177e4
LT		 84 wait without data before completing
85 a read short */
86 int baud_rate;
87 int close_pending;
88 int lsr_event;
1da177e4
LT		 89 struct async_icount icount;
90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while
91 waiting for msr change to
92 happen */
93 struct edgeport_serial *edge_serial;
94 struct usb_serial_port *port;
2742fd88 95 __u8 bUartMode; /* Port type, 0: RS232, etc. */
1da177e4
LT		 96 spinlock_t ep_lock;
97 int ep_read_urb_state;
98 int ep_write_urb_in_use;
d733cec1 99 struct kfifo write_fifo;
1da177e4
LT		 100};
101
102struct edgeport_serial {
103 struct product_info product_info;
2742fd88
AC		 104 u8 TI_I2C_Type; /* Type of I2C in UMP */
105 u8 TiReadI2C; /* Set to TRUE if we have read the
106 I2c in Boot Mode */
241ca64f 107 struct mutex es_lock;
1da177e4
LT		 108 int num_ports_open;
109 struct usb_serial *serial;
110};
111
112
113/* Devices that this driver supports */
7d40d7e8 114static const struct usb_device_id edgeport_1port_id_table[] = {
1da177e4
LT		 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
131 { }
132};
133
7d40d7e8 134static const struct usb_device_id edgeport_2port_id_table[] = {
1da177e4
LT		 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
fc4cbd75 147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
1da177e4 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
fc4cbd75
MP		 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
1da177e4
LT		 153 { }
154};
155
156/* Devices that this driver supports */
7d40d7e8 157static const struct usb_device_id id_table_combined[] = {
1da177e4
LT		 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
fc4cbd75
MP		 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
1da177e4
LT		 191 { }
192};
193
2742fd88 194MODULE_DEVICE_TABLE(usb, id_table_combined);
1da177e4 195
d12b219a
JS		 196static unsigned char OperationalMajorVersion;
197static unsigned char OperationalMinorVersion;
198static unsigned short OperationalBuildNumber;
1da177e4 199
1da177e4 200static int closing_wait = EDGE_CLOSING_WAIT;
90ab5ee9 201static bool ignore_cpu_rev;
2742fd88 202static int default_uart_mode; /* RS232 */
1da177e4 203
2742fd88
AC		 204static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
205 unsigned char *data, int length);
1da177e4
LT		 206
207static void stop_read(struct edgeport_port *edge_port);
208static int restart_read(struct edgeport_port *edge_port);
209
95da310e
AC		 210static void edge_set_termios(struct tty_struct *tty,
211 struct usb_serial_port *port, struct ktermios *old_termios);
212static void edge_send(struct tty_struct *tty);
1da177e4 213
fc4cbd75
MP		 214/* sysfs attributes */
215static int edge_create_sysfs_attrs(struct usb_serial_port *port);
216static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
217
1da177e4 218
2742fd88
AC		 219static int ti_vread_sync(struct usb_device *dev, __u8 request,
220 __u16 value, __u16 index, u8 *data, int size)
1da177e4
LT		 221{
222 int status;
223
2742fd88
AC		 224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
226 value, index, data, size, 1000);
1da177e4
LT		 227 if (status < 0)
228 return status;
229 if (status != size) {
67e6da70
GKH		 230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
231 __func__, size, status);
1da177e4
LT		 232 return -ECOMM;
233 }
234 return 0;
235}
236
2742fd88
AC		 237static int ti_vsend_sync(struct usb_device *dev, __u8 request,
238 __u16 value, __u16 index, u8 *data, int size)
1da177e4
LT		 239{
240 int status;
241
2742fd88
AC		 242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
244 value, index, data, size, 1000);
1da177e4
LT		 245 if (status < 0)
246 return status;
247 if (status != size) {
67e6da70
GKH		 248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
249 __func__, size, status);
1da177e4
LT		 250 return -ECOMM;
251 }
252 return 0;
253}
254
2742fd88 255static int send_cmd(struct usb_device *dev, __u8 command,
1da177e4
LT		 256 __u8 moduleid, __u16 value, u8 *data,
257 int size)
258{
2742fd88 259 return ti_vsend_sync(dev, command, value, moduleid, data, size);
1da177e4
LT		 260}
261
262/* clear tx/rx buffers and fifo in TI UMP */
2742fd88 263static int purge_port(struct usb_serial_port *port, __u16 mask)
1da177e4
LT		 264{
265 int port_number = port->number - port->serial->minor;
266
67e6da70 267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
1da177e4 268
2742fd88 269 return send_cmd(port->serial->dev,
1da177e4
LT		 270 UMPC_PURGE_PORT,
271 (__u8)(UMPM_UART1_PORT + port_number),
272 mask,
273 NULL,
274 0);
275}
276
277/**
2742fd88 278 * read_download_mem - Read edgeport memory from TI chip
1da177e4
LT		 279 * @dev: usb device pointer
280 * @start_address: Device CPU address at which to read
281 * @length: Length of above data
282 * @address_type: Can read both XDATA and I2C
283 * @buffer: pointer to input data buffer
284 */
2742fd88 285static int read_download_mem(struct usb_device *dev, int start_address,
1da177e4
LT		 286 int length, __u8 address_type, __u8 *buffer)
287{
288 int status = 0;
289 __u8 read_length;
290 __be16 be_start_address;
2742fd88 291
67e6da70 292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
1da177e4
LT		 293
294 /* Read in blocks of 64 bytes
295 * (TI firmware can't handle more than 64 byte reads)
296 */
297 while (length) {
298 if (length > 64)
2742fd88 299 read_length = 64;
1da177e4
LT		 300 else
301 read_length = (__u8)length;
302
303 if (read_length > 1) {
67e6da70 304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
1da177e4 305 }
2742fd88
AC		 306 be_start_address = cpu_to_be16(start_address);
307 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
308 (__u16)address_type,
309 (__force __u16)be_start_address,
310 buffer, read_length);
1da177e4
LT		 311
312 if (status) {
67e6da70 313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
1da177e4
LT		 314 return status;
315 }
316
2742fd88 317 if (read_length > 1)
59d33f2f 318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
1da177e4
LT		 319
320 /* Update pointers/length */
321 start_address += read_length;
322 buffer += read_length;
323 length -= read_length;
324 }
2742fd88 325
1da177e4
LT		 326 return status;
327}
328
2742fd88
AC		 329static int read_ram(struct usb_device *dev, int start_address,
330 int length, __u8 *buffer)
1da177e4 331{
2742fd88
AC		 332 return read_download_mem(dev, start_address, length,
333 DTK_ADDR_SPACE_XDATA, buffer);
1da177e4
LT		 334}
335
336/* Read edgeport memory to a given block */
2742fd88
AC		 337static int read_boot_mem(struct edgeport_serial *serial,
338 int start_address, int length, __u8 *buffer)
1da177e4
LT		 339{
340 int status = 0;
341 int i;
342
2742fd88
AC		 343 for (i = 0; i < length; i++) {
344 status = ti_vread_sync(serial->serial->dev,
345 UMPC_MEMORY_READ, serial->TI_I2C_Type,
346 (__u16)(start_address+i), &buffer[i], 0x01);
1da177e4 347 if (status) {
67e6da70 348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
1da177e4
LT		 349 return status;
350 }
351 }
352
67e6da70
GKH		 353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
354 __func__, start_address, length);
59d33f2f 355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
1da177e4
LT		 356
357 serial->TiReadI2C = 1;
358
359 return status;
360}
361
362/* Write given block to TI EPROM memory */
2742fd88
AC		 363static int write_boot_mem(struct edgeport_serial *serial,
364 int start_address, int length, __u8 *buffer)
1da177e4
LT		 365{
366 int status = 0;
367 int i;
e9305d2f 368 u8 *temp;
1da177e4
LT		 369
370 /* Must do a read before write */
371 if (!serial->TiReadI2C) {
e9305d2f
JH		 372 temp = kmalloc(1, GFP_KERNEL);
373 if (!temp) {
374 dev_err(&serial->serial->dev->dev,
375 "%s - out of memory\n", __func__);
376 return -ENOMEM;
377 }
378 status = read_boot_mem(serial, 0, 1, temp);
379 kfree(temp);
1da177e4
LT		 380 if (status)
381 return status;
382 }
383
2742fd88
AC		 384 for (i = 0; i < length; ++i) {
385 status = ti_vsend_sync(serial->serial->dev,
386 UMPC_MEMORY_WRITE, buffer[i],
387 (__u16)(i + start_address), NULL, 0);
1da177e4
LT		 388 if (status)
389 return status;
390 }
391
67e6da70 392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
59d33f2f 393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
1da177e4
LT		 394
395 return status;
396}
397
398
399/* Write edgeport I2C memory to TI chip */
2742fd88
AC		 400static int write_i2c_mem(struct edgeport_serial *serial,
401 int start_address, int length, __u8 address_type, __u8 *buffer)
1da177e4 402{
67e6da70 403 struct device *dev = &serial->serial->dev->dev;
1da177e4
LT		 404 int status = 0;
405 int write_length;
406 __be16 be_start_address;
407
408 /* We can only send a maximum of 1 aligned byte page at a time */
2742fd88 409
25985edc 410 /* calculate the number of bytes left in the first page */
2742fd88
AC		 411 write_length = EPROM_PAGE_SIZE -
412 (start_address & (EPROM_PAGE_SIZE - 1));
1da177e4
LT		 413
414 if (write_length > length)
415 write_length = length;
416
67e6da70
GKH		 417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
418 __func__, start_address, write_length);
59d33f2f 419 usb_serial_debug_data(dev, __func__, write_length, buffer);
1da177e4
LT		 420
421 /* Write first page */
2742fd88
AC		 422 be_start_address = cpu_to_be16(start_address);
423 status = ti_vsend_sync(serial->serial->dev,
424 UMPC_MEMORY_WRITE, (__u16)address_type,
425 (__force __u16)be_start_address,
426 buffer, write_length);
1da177e4 427 if (status) {
67e6da70 428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
1da177e4
LT		 429 return status;
430 }
431
432 length -= write_length;
433 start_address += write_length;
434 buffer += write_length;
435
2742fd88
AC		 436 /* We should be aligned now -- can write
437 max page size bytes at a time */
1da177e4
LT		 438 while (length) {
439 if (length > EPROM_PAGE_SIZE)
440 write_length = EPROM_PAGE_SIZE;
441 else
442 write_length = length;
443
67e6da70
GKH		 444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
445 __func__, start_address, write_length);
59d33f2f 446 usb_serial_debug_data(dev, __func__, write_length, buffer);
1da177e4
LT		 447
448 /* Write next page */
2742fd88
AC		 449 be_start_address = cpu_to_be16(start_address);
450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
451 (__u16)address_type,
452 (__force __u16)be_start_address,
453 buffer, write_length);
1da177e4 454 if (status) {
67e6da70 455 dev_err(dev, "%s - ERROR %d\n", __func__, status);
1da177e4
LT		 456 return status;
457 }
2742fd88 458
1da177e4
LT		 459 length -= write_length;
460 start_address += write_length;
461 buffer += write_length;
462 }
463 return status;
464}
465
466/* Examine the UMP DMA registers and LSR
2742fd88 467 *
1da177e4
LT		 468 * Check the MSBit of the X and Y DMA byte count registers.
469 * A zero in this bit indicates that the TX DMA buffers are empty
470 * then check the TX Empty bit in the UART.
471 */
2742fd88 472static int tx_active(struct edgeport_port *port)
1da177e4
LT		 473{
474 int status;
475 struct out_endpoint_desc_block *oedb;
476 __u8 *lsr;
477 int bytes_left = 0;
478
2742fd88 479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
1da177e4 480 if (!oedb) {
2742fd88 481 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
1da177e4
LT		 482 return -ENOMEM;
483 }
484
2742fd88 485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte,
1da177e4
LT		 486 as not all platforms can do DMA
487 from stack */
488 if (!lsr) {
489 kfree(oedb);
490 return -ENOMEM;
491 }
492 /* Read the DMA Count Registers */
2742fd88
AC		 493 status = read_ram(port->port->serial->dev, port->dma_address,
494 sizeof(*oedb), (void *)oedb);
1da177e4
LT		 495 if (status)
496 goto exit_is_tx_active;
497
67e6da70 498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
1da177e4
LT		 499
500 /* and the LSR */
2742fd88
AC		 501 status = read_ram(port->port->serial->dev,
502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
1da177e4
LT		 503
504 if (status)
505 goto exit_is_tx_active;
67e6da70 506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
2742fd88 507
1da177e4 508 /* If either buffer has data or we are transmitting then return TRUE */
2742fd88 509 if ((oedb->XByteCount & 0x80) != 0)
1da177e4
LT		 510 bytes_left += 64;
511
2742fd88 512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
1da177e4
LT		 513 bytes_left += 1;
514
515 /* We return Not Active if we get any kind of error */
516exit_is_tx_active:
67e6da70 517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
1da177e4
LT		 518
519 kfree(lsr);
520 kfree(oedb);
521 return bytes_left;
522}
523
2742fd88
AC		 524static void chase_port(struct edgeport_port *port, unsigned long timeout,
525 int flush)
1da177e4
LT		 526{
527 int baud_rate;
4a90f09b 528 struct tty_struct *tty = tty_port_tty_get(&port->port->port);
af581059 529 struct usb_serial *serial = port->port->serial;
1da177e4
LT		 530 wait_queue_t wait;
531 unsigned long flags;
532
533 if (!timeout)
2742fd88 534 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
1da177e4
LT		 535
536 /* wait for data to drain from the buffer */
537 spin_lock_irqsave(&port->ep_lock, flags);
538 init_waitqueue_entry(&wait, current);
539 add_wait_queue(&tty->write_wait, &wait);
540 for (;;) {
541 set_current_state(TASK_INTERRUPTIBLE);
d733cec1 542 if (kfifo_len(&port->write_fifo) == 0
1da177e4 543 || timeout == 0 || signal_pending(current)
af581059 544 || serial->disconnected)
2742fd88 545 /* disconnect */
1da177e4
LT		 546 break;
547 spin_unlock_irqrestore(&port->ep_lock, flags);
548 timeout = schedule_timeout(timeout);
549 spin_lock_irqsave(&port->ep_lock, flags);
550 }
551 set_current_state(TASK_RUNNING);
552 remove_wait_queue(&tty->write_wait, &wait);
553 if (flush)
d733cec1 554 kfifo_reset_out(&port->write_fifo);
1da177e4 555 spin_unlock_irqrestore(&port->ep_lock, flags);
4a90f09b 556 tty_kref_put(tty);
1da177e4
LT		 557
558 /* wait for data to drain from the device */
559 timeout += jiffies;
560 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
af581059 561 && !serial->disconnected) {
2742fd88
AC		 562 /* not disconnected */
563 if (!tx_active(port))
1da177e4
LT		 564 break;
565 msleep(10);
566 }
567
568 /* disconnected */
af581059 569 if (serial->disconnected)
1da177e4
LT		 570 return;
571
572 /* wait one more character time, based on baud rate */
2742fd88
AC		 573 /* (tx_active doesn't seem to wait for the last byte) */
574 baud_rate = port->baud_rate;
575 if (baud_rate == 0)
1da177e4 576 baud_rate = 50;
dfa5ec79 577 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
1da177e4
LT		 578}
579
2742fd88 580static int choose_config(struct usb_device *dev)
1da177e4 581{
2742fd88
AC		 582 /*
583 * There may be multiple configurations on this device, in which case
584 * we would need to read and parse all of them to find out which one
585 * we want. However, we just support one config at this point,
586 * configuration # 1, which is Config Descriptor 0.
587 */
1da177e4 588
67e6da70
GKH		 589 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
590 __func__, dev->config->desc.bNumInterfaces);
591 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
592 __func__, dev->config->desc.bMaxPower * 2);
1da177e4
LT		 593
594 if (dev->config->desc.bNumInterfaces != 1) {
67e6da70 595 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
1da177e4
LT		 596 return -ENODEV;
597 }
598
599 return 0;
600}
601
2742fd88
AC		 602static int read_rom(struct edgeport_serial *serial,
603 int start_address, int length, __u8 *buffer)
1da177e4
LT		 604{
605 int status;
606
607 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
2742fd88 608 status = read_download_mem(serial->serial->dev,
1da177e4
LT		 609 start_address,
610 length,
611 serial->TI_I2C_Type,
612 buffer);
613 } else {
2742fd88
AC		 614 status = read_boot_mem(serial, start_address, length,
615 buffer);
1da177e4 616 }
1da177e4
LT		 617 return status;
618}
619
2742fd88
AC		 620static int write_rom(struct edgeport_serial *serial, int start_address,
621 int length, __u8 *buffer)
1da177e4
LT		 622{
623 if (serial->product_info.TiMode == TI_MODE_BOOT)
2742fd88
AC		 624 return write_boot_mem(serial, start_address, length,
625 buffer);
1da177e4
LT		 626
627 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
2742fd88
AC		 628 return write_i2c_mem(serial, start_address, length,
629 serial->TI_I2C_Type, buffer);
1da177e4
LT		 630 return -EINVAL;
631}
632
633
634
635/* Read a descriptor header from I2C based on type */
2742fd88
AC		 636static int get_descriptor_addr(struct edgeport_serial *serial,
637 int desc_type, struct ti_i2c_desc *rom_desc)
1da177e4
LT		 638{
639 int start_address;
640 int status;
641
642 /* Search for requested descriptor in I2C */
643 start_address = 2;
644 do {
2742fd88 645 status = read_rom(serial,
1da177e4
LT		 646 start_address,
647 sizeof(struct ti_i2c_desc),
2742fd88 648 (__u8 *)rom_desc);
1da177e4
LT		 649 if (status)
650 return 0;
651
652 if (rom_desc->Type == desc_type)
653 return start_address;
654
2742fd88
AC		 655 start_address = start_address + sizeof(struct ti_i2c_desc)
656 + rom_desc->Size;
1da177e4
LT		 657
658 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
2742fd88 659
1da177e4
LT		 660 return 0;
661}
662
663/* Validate descriptor checksum */
2742fd88 664static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
1da177e4
LT		 665{
666 __u16 i;
667 __u8 cs = 0;
668
2742fd88 669 for (i = 0; i < rom_desc->Size; i++)
1da177e4 670 cs = (__u8)(cs + buffer[i]);
2742fd88 671
1da177e4 672 if (cs != rom_desc->CheckSum) {
67e6da70 673 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
1da177e4
LT		 674 return -EINVAL;
675 }
676 return 0;
677}
678
679/* Make sure that the I2C image is good */
2742fd88 680static int check_i2c_image(struct edgeport_serial *serial)
1da177e4
LT		 681{
682 struct device *dev = &serial->serial->dev->dev;
683 int status = 0;
684 struct ti_i2c_desc *rom_desc;
685 int start_address = 2;
686 __u8 *buffer;
687 __u16 ttype;
688
2742fd88 689 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1da177e4 690 if (!rom_desc) {
2742fd88 691 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 692 return -ENOMEM;
693 }
2742fd88 694 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
1da177e4 695 if (!buffer) {
2742fd88
AC		 696 dev_err(dev, "%s - out of memory when allocating buffer\n",
697 __func__);
698 kfree(rom_desc);
1da177e4
LT		 699 return -ENOMEM;
700 }
701
2742fd88
AC		 702 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
703 status = read_rom(serial, 0, 1, buffer);
1da177e4 704 if (status)
2742fd88 705 goto out;
1da177e4
LT		 706
707 if (*buffer != UMP5152 && *buffer != UMP3410) {
2742fd88 708 dev_err(dev, "%s - invalid buffer signature\n", __func__);
1da177e4 709 status = -ENODEV;
2742fd88 710 goto out;
1da177e4
LT		 711 }
712
713 do {
2742fd88
AC		 714 /* Validate the I2C */
715 status = read_rom(serial,
1da177e4
LT		 716 start_address,
717 sizeof(struct ti_i2c_desc),
718 (__u8 *)rom_desc);
719 if (status)
720 break;
721
2742fd88
AC		 722 if ((start_address + sizeof(struct ti_i2c_desc) +
723 rom_desc->Size) > TI_MAX_I2C_SIZE) {
1da177e4 724 status = -ENODEV;
67e6da70 725 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
1da177e4
LT		 726 break;
727 }
728
67e6da70 729 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
1da177e4 730
2742fd88 731 /* Skip type 2 record */
1da177e4 732 ttype = rom_desc->Type & 0x0f;
2742fd88
AC		 733 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
734 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
735 /* Read the descriptor data */
736 status = read_rom(serial, start_address +
737 sizeof(struct ti_i2c_desc),
738 rom_desc->Size, buffer);
1da177e4
LT		 739 if (status)
740 break;
741
2742fd88 742 status = valid_csum(rom_desc, buffer);
1da177e4
LT		 743 if (status)
744 break;
745 }
2742fd88
AC		 746 start_address = start_address + sizeof(struct ti_i2c_desc) +
747 rom_desc->Size;
1da177e4 748
2742fd88
AC		 749 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
750 (start_address < TI_MAX_I2C_SIZE));
1da177e4 751
2742fd88
AC		 752 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
753 (start_address > TI_MAX_I2C_SIZE))
1da177e4
LT		 754 status = -ENODEV;
755
2742fd88
AC		 756out:
757 kfree(buffer);
758 kfree(rom_desc);
1da177e4
LT		 759 return status;
760}
761
2742fd88 762static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
1da177e4
LT		 763{
764 int status;
765 int start_address;
766 struct ti_i2c_desc *rom_desc;
767 struct edge_ti_manuf_descriptor *desc;
67e6da70 768 struct device *dev = &serial->serial->dev->dev;
1da177e4 769
2742fd88 770 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1da177e4 771 if (!rom_desc) {
67e6da70 772 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 773 return -ENOMEM;
774 }
2742fd88
AC		 775 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
776 rom_desc);
1da177e4
LT		 777
778 if (!start_address) {
67e6da70 779 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
1da177e4
LT		 780 status = -ENODEV;
781 goto exit;
782 }
783
2742fd88
AC		 784 /* Read the descriptor data */
785 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
786 rom_desc->Size, buffer);
1da177e4
LT		 787 if (status)
788 goto exit;
2742fd88
AC		 789
790 status = valid_csum(rom_desc, buffer);
791
1da177e4 792 desc = (struct edge_ti_manuf_descriptor *)buffer;
67e6da70
GKH		 793 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
794 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
795 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
796 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
797 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
798 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
1da177e4
LT		 799
800exit:
2742fd88 801 kfree(rom_desc);
1da177e4
LT		 802 return status;
803}
804
805/* Build firmware header used for firmware update */
2742fd88 806static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
1da177e4
LT		 807{
808 __u8 *buffer;
809 int buffer_size;
810 int i;
d12b219a 811 int err;
1da177e4
LT		 812 __u8 cs = 0;
813 struct ti_i2c_desc *i2c_header;
814 struct ti_i2c_image_header *img_header;
815 struct ti_i2c_firmware_rec *firmware_rec;
d12b219a
JS		 816 const struct firmware *fw;
817 const char *fw_name = "edgeport/down3.bin";
1da177e4 818
2742fd88
AC		 819 /* In order to update the I2C firmware we must change the type 2 record
820 * to type 0xF2. This will force the UMP to come up in Boot Mode.
821 * Then while in boot mode, the driver will download the latest
822 * firmware (padded to 15.5k) into the UMP ram. And finally when the
823 * device comes back up in download mode the driver will cause the new
824 * firmware to be copied from the UMP Ram to I2C and the firmware will
825 * update the record type from 0xf2 to 0x02.
826 */
827
828 /* Allocate a 15.5k buffer + 2 bytes for version number
829 * (Firmware Record) */
830 buffer_size = (((1024 * 16) - 512 ) +
831 sizeof(struct ti_i2c_firmware_rec));
832
833 buffer = kmalloc(buffer_size, GFP_KERNEL);
1da177e4 834 if (!buffer) {
2742fd88 835 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 836 return -ENOMEM;
837 }
2742fd88 838
1da177e4 839 // Set entire image of 0xffs
2742fd88 840 memset(buffer, 0xff, buffer_size);
1da177e4 841
d12b219a
JS		 842 err = request_firmware(&fw, fw_name, dev);
843 if (err) {
d9bb03dc
GKH		 844 dev_err(dev, "Failed to load image \"%s\" err %d\n",
845 fw_name, err);
d12b219a
JS		 846 kfree(buffer);
847 return err;
848 }
849
850 /* Save Download Version Number */
851 OperationalMajorVersion = fw->data[0];
852 OperationalMinorVersion = fw->data[1];
853 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
854
2742fd88 855 /* Copy version number into firmware record */
1da177e4
LT		 856 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
857
d12b219a
JS		 858 firmware_rec->Ver_Major = OperationalMajorVersion;
859 firmware_rec->Ver_Minor = OperationalMinorVersion;
1da177e4 860
2742fd88 861 /* Pointer to fw_down memory image */
d12b219a 862 img_header = (struct ti_i2c_image_header *)&fw->data[4];
1da177e4 863
2742fd88 864 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
d12b219a 865 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
1da177e4
LT		 866 le16_to_cpu(img_header->Length));
867
d12b219a
JS		 868 release_firmware(fw);
869
1da177e4
LT		 870 for (i=0; i < buffer_size; i++) {
871 cs = (__u8)(cs + buffer[i]);
872 }
873
2742fd88 874 kfree(buffer);
1da177e4 875
2742fd88 876 /* Build new header */
1da177e4
LT		 877 i2c_header = (struct ti_i2c_desc *)header;
878 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
2742fd88 879
1da177e4
LT		 880 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
881 i2c_header->Size = (__u16)buffer_size;
882 i2c_header->CheckSum = cs;
d12b219a
JS		 883 firmware_rec->Ver_Major = OperationalMajorVersion;
884 firmware_rec->Ver_Minor = OperationalMinorVersion;
1da177e4
LT		 885
886 return 0;
887}
888
889/* Try to figure out what type of I2c we have */
2742fd88 890static int i2c_type_bootmode(struct edgeport_serial *serial)
1da177e4 891{
67e6da70 892 struct device *dev = &serial->serial->dev->dev;
1da177e4 893 int status;
e9305d2f
JH		 894 u8 *data;
895
896 data = kmalloc(1, GFP_KERNEL);
897 if (!data) {
67e6da70 898 dev_err(dev, "%s - out of memory\n", __func__);
e9305d2f
JH		 899 return -ENOMEM;
900 }
2742fd88
AC		 901
902 /* Try to read type 2 */
903 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
e9305d2f 904 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
1da177e4 905 if (status)
67e6da70 906 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
1da177e4 907 else
67e6da70 908 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
e9305d2f 909 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
67e6da70 910 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
1da177e4 911 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
e9305d2f 912 goto out;
1da177e4
LT		 913 }
914
2742fd88
AC		 915 /* Try to read type 3 */
916 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
e9305d2f 917 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
1da177e4 918 if (status)
67e6da70 919 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
1da177e4 920 else
67e6da70 921 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
e9305d2f 922 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
67e6da70 923 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
1da177e4 924 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
e9305d2f 925 goto out;
1da177e4
LT		 926 }
927
67e6da70 928 dev_dbg(dev, "%s - Unknown\n", __func__);
1da177e4 929 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
e9305d2f
JH		 930 status = -ENODEV;
931out:
932 kfree(data);
933 return status;
1da177e4
LT		 934}
935
2742fd88
AC		 936static int bulk_xfer(struct usb_serial *serial, void *buffer,
937 int length, int *num_sent)
1da177e4
LT		 938{
939 int status;
940
2742fd88
AC		 941 status = usb_bulk_msg(serial->dev,
942 usb_sndbulkpipe(serial->dev,
943 serial->port[0]->bulk_out_endpointAddress),
944 buffer, length, num_sent, 1000);
1da177e4
LT		 945 return status;
946}
947
948/* Download given firmware image to the device (IN BOOT MODE) */
2742fd88
AC		 949static int download_code(struct edgeport_serial *serial, __u8 *image,
950 int image_length)
1da177e4
LT		 951{
952 int status = 0;
953 int pos;
954 int transfer;
955 int done;
956
2742fd88 957 /* Transfer firmware image */
1da177e4 958 for (pos = 0; pos < image_length; ) {
2742fd88 959 /* Read the next buffer from file */
1da177e4
LT		 960 transfer = image_length - pos;
961 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
962 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
963
2742fd88
AC		 964 /* Transfer data */
965 status = bulk_xfer(serial->serial, &image[pos],
966 transfer, &done);
1da177e4
LT		 967 if (status)
968 break;
2742fd88 969 /* Advance buffer pointer */
1da177e4
LT		 970 pos += done;
971 }
972
973 return status;
974}
975
2742fd88
AC		 976/* FIXME!!! */
977static int config_boot_dev(struct usb_device *dev)
1da177e4
LT		 978{
979 return 0;
980}
981
2742fd88
AC		 982static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
983{
984 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
985}
986
1da177e4
LT		 987/**
988 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
2742fd88 989 *
1da177e4
LT		 990 * This routine downloads the main operating code into the TI5052, using the
991 * boot code already burned into E2PROM or ROM.
992 */
2742fd88 993static int download_fw(struct edgeport_serial *serial)
1da177e4
LT		 994{
995 struct device *dev = &serial->serial->dev->dev;
996 int status = 0;
997 int start_address;
998 struct edge_ti_manuf_descriptor *ti_manuf_desc;
999 struct usb_interface_descriptor *interface;
1000 int download_cur_ver;
1001 int download_new_ver;
1002
1003 /* This routine is entered by both the BOOT mode and the Download mode
1004 * We can determine which code is running by the reading the config
1005 * descriptor and if we have only one bulk pipe it is in boot mode
1006 */
1007 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1008
1009 /* Default to type 2 i2c */
1010 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1011
2742fd88 1012 status = choose_config(serial->serial->dev);
1da177e4
LT		 1013 if (status)
1014 return status;
1015
1016 interface = &serial->serial->interface->cur_altsetting->desc;
1017 if (!interface) {
2742fd88 1018 dev_err(dev, "%s - no interface set, error!\n", __func__);
1da177e4
LT		 1019 return -ENODEV;
1020 }
1021
2742fd88
AC		 1022 /*
1023 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1024 * if we have more than one endpoint we are definitely in download
1025 * mode
1026 */
1da177e4
LT		 1027 if (interface->bNumEndpoints > 1)
1028 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1029 else
2742fd88 1030 /* Otherwise we will remain in configuring mode */
1da177e4
LT		 1031 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1032
1da177e4
LT		 1033 /********************************************************************/
1034 /* Download Mode */
1035 /********************************************************************/
1036 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1037 struct ti_i2c_desc *rom_desc;
1038
67e6da70 1039 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1da177e4 1040
2742fd88 1041 status = check_i2c_image(serial);
1da177e4 1042 if (status) {
67e6da70 1043 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1da177e4
LT		 1044 return status;
1045 }
2742fd88 1046
1da177e4
LT		 1047 /* Validate Hardware version number
1048 * Read Manufacturing Descriptor from TI Based Edgeport
1049 */
2742fd88 1050 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1da177e4 1051 if (!ti_manuf_desc) {
2742fd88 1052 dev_err(dev, "%s - out of memory.\n", __func__);
1da177e4
LT		 1053 return -ENOMEM;
1054 }
2742fd88 1055 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1da177e4 1056 if (status) {
2742fd88 1057 kfree(ti_manuf_desc);
1da177e4
LT		 1058 return status;
1059 }
1060
2742fd88
AC		 1061 /* Check version number of ION descriptor */
1062 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
67e6da70 1063 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
2742fd88
AC		 1064 __func__, ti_cpu_rev(ti_manuf_desc));
1065 kfree(ti_manuf_desc);
1066 return -EINVAL;
1067 }
1da177e4 1068
2742fd88 1069 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1da177e4 1070 if (!rom_desc) {
2742fd88
AC		 1071 dev_err(dev, "%s - out of memory.\n", __func__);
1072 kfree(ti_manuf_desc);
1da177e4
LT		 1073 return -ENOMEM;
1074 }
1075
2742fd88
AC		 1076 /* Search for type 2 record (firmware record) */
1077 start_address = get_descriptor_addr(serial,
1078 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1079 if (start_address != 0) {
1da177e4 1080 struct ti_i2c_firmware_rec *firmware_version;
e9305d2f 1081 u8 *record;
1da177e4 1082
67e6da70 1083 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1da177e4 1084
2742fd88
AC		 1085 firmware_version = kmalloc(sizeof(*firmware_version),
1086 GFP_KERNEL);
1da177e4 1087 if (!firmware_version) {
2742fd88
AC		 1088 dev_err(dev, "%s - out of memory.\n", __func__);
1089 kfree(rom_desc);
1090 kfree(ti_manuf_desc);
1da177e4
LT		 1091 return -ENOMEM;
1092 }
1093
2742fd88
AC		 1094 /* Validate version number
1095 * Read the descriptor data
1096 */
1097 status = read_rom(serial, start_address +
1098 sizeof(struct ti_i2c_desc),
1da177e4
LT		 1099 sizeof(struct ti_i2c_firmware_rec),
1100 (__u8 *)firmware_version);
1101 if (status) {
2742fd88
AC		 1102 kfree(firmware_version);
1103 kfree(rom_desc);
1104 kfree(ti_manuf_desc);
1da177e4
LT		 1105 return status;
1106 }
1107
2742fd88
AC		 1108 /* Check version number of download with current
1109 version in I2c */
1110 download_cur_ver = (firmware_version->Ver_Major << 8) +
1da177e4 1111 (firmware_version->Ver_Minor);
d12b219a
JS		 1112 download_new_ver = (OperationalMajorVersion << 8) +
1113 (OperationalMinorVersion);
1da177e4 1114
67e6da70
GKH		 1115 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1116 __func__, firmware_version->Ver_Major,
1117 firmware_version->Ver_Minor,
1118 OperationalMajorVersion,
1119 OperationalMinorVersion);
1da177e4 1120
2742fd88
AC		 1121 /* Check if we have an old version in the I2C and
1122 update if necessary */
0827a9ff 1123 if (download_cur_ver < download_new_ver) {
67e6da70
GKH		 1124 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1125 __func__,
1126 firmware_version->Ver_Major,
1127 firmware_version->Ver_Minor,
1128 OperationalMajorVersion,
1129 OperationalMinorVersion);
2742fd88 1130
e9305d2f
JH		 1131 record = kmalloc(1, GFP_KERNEL);
1132 if (!record) {
1133 dev_err(dev, "%s - out of memory.\n",
1134 __func__);
1135 kfree(firmware_version);
1136 kfree(rom_desc);
1137 kfree(ti_manuf_desc);
1138 return -ENOMEM;
1139 }
2742fd88
AC		 1140 /* In order to update the I2C firmware we must
1141 * change the type 2 record to type 0xF2. This
1142 * will force the UMP to come up in Boot Mode.
1143 * Then while in boot mode, the driver will
1144 * download the latest firmware (padded to
1145 * 15.5k) into the UMP ram. Finally when the
1146 * device comes back up in download mode the
1147 * driver will cause the new firmware to be
1148 * copied from the UMP Ram to I2C and the
1149 * firmware will update the record type from
1150 * 0xf2 to 0x02.
1151 */
e9305d2f 1152 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1da177e4 1153
2742fd88
AC		 1154 /* Change the I2C Firmware record type to
1155 0xf2 to trigger an update */
1156 status = write_rom(serial, start_address,
e9305d2f 1157 sizeof(*record), record);
1da177e4 1158 if (status) {
e9305d2f 1159 kfree(record);
2742fd88
AC		 1160 kfree(firmware_version);
1161 kfree(rom_desc);
1162 kfree(ti_manuf_desc);
1da177e4
LT		 1163 return status;
1164 }
1165
2742fd88
AC		 1166 /* verify the write -- must do this in order
1167 * for write to complete before we do the
1168 * hardware reset
1169 */
1170 status = read_rom(serial,
1da177e4 1171 start_address,
e9305d2f
JH		 1172 sizeof(*record),
1173 record);
1da177e4 1174 if (status) {
e9305d2f 1175 kfree(record);
2742fd88
AC		 1176 kfree(firmware_version);
1177 kfree(rom_desc);
1178 kfree(ti_manuf_desc);
1da177e4
LT		 1179 return status;
1180 }
1181
e9305d2f 1182 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
67e6da70 1183 dev_err(dev, "%s - error resetting device\n", __func__);
e9305d2f 1184 kfree(record);
2742fd88
AC		 1185 kfree(firmware_version);
1186 kfree(rom_desc);
1187 kfree(ti_manuf_desc);
1da177e4
LT		 1188 return -ENODEV;
1189 }
1190
67e6da70 1191 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1da177e4 1192
2742fd88
AC		 1193 /* Reset UMP -- Back to BOOT MODE */
1194 status = ti_vsend_sync(serial->serial->dev,
1195 UMPC_HARDWARE_RESET,
1196 0, 0, NULL, 0);
1da177e4 1197
67e6da70 1198 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1da177e4
LT		 1199
1200 /* return an error on purpose. */
e9305d2f 1201 kfree(record);
2742fd88
AC		 1202 kfree(firmware_version);
1203 kfree(rom_desc);
1204 kfree(ti_manuf_desc);
1da177e4
LT		 1205 return -ENODEV;
1206 }
2742fd88 1207 kfree(firmware_version);
1da177e4 1208 }
2742fd88
AC		 1209 /* Search for type 0xF2 record (firmware blank record) */
1210 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1211#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1212 sizeof(struct ti_i2c_firmware_rec))
1da177e4
LT		 1213 __u8 *header;
1214 __u8 *vheader;
1215
2742fd88 1216 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1da177e4 1217 if (!header) {
2742fd88
AC		 1218 dev_err(dev, "%s - out of memory.\n", __func__);
1219 kfree(rom_desc);
1220 kfree(ti_manuf_desc);
1da177e4
LT		 1221 return -ENOMEM;
1222 }
2742fd88
AC		 1223
1224 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1da177e4 1225 if (!vheader) {
2742fd88
AC		 1226 dev_err(dev, "%s - out of memory.\n", __func__);
1227 kfree(header);
1228 kfree(rom_desc);
1229 kfree(ti_manuf_desc);
1da177e4
LT		 1230 return -ENOMEM;
1231 }
2742fd88 1232
67e6da70 1233 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
2742fd88
AC		 1234
1235 /*
1236 * In order to update the I2C firmware we must change
1237 * the type 2 record to type 0xF2. This will force the
1238 * UMP to come up in Boot Mode. Then while in boot
1239 * mode, the driver will download the latest firmware
1240 * (padded to 15.5k) into the UMP ram. Finally when the
1241 * device comes back up in download mode the driver
1242 * will cause the new firmware to be copied from the
1243 * UMP Ram to I2C and the firmware will update the
1244 * record type from 0xf2 to 0x02.
1245 */
1246 status = build_i2c_fw_hdr(header, dev);
1da177e4 1247 if (status) {
2742fd88
AC		 1248 kfree(vheader);
1249 kfree(header);
1250 kfree(rom_desc);
1251 kfree(ti_manuf_desc);
fd6e5bbb 1252 return -EINVAL;
1da177e4
LT		 1253 }
1254
2742fd88
AC		 1255 /* Update I2C with type 0xf2 record with correct
1256 size and checksum */
1257 status = write_rom(serial,
1da177e4
LT		 1258 start_address,
1259 HEADER_SIZE,
1260 header);
1261 if (status) {
2742fd88
AC		 1262 kfree(vheader);
1263 kfree(header);
1264 kfree(rom_desc);
1265 kfree(ti_manuf_desc);
9800eb33 1266 return -EINVAL;
1da177e4
LT		 1267 }
1268
2742fd88
AC		 1269 /* verify the write -- must do this in order for
1270 write to complete before we do the hardware reset */
1271 status = read_rom(serial, start_address,
1272 HEADER_SIZE, vheader);
1da177e4
LT		 1273
1274 if (status) {
67e6da70 1275 dev_dbg(dev, "%s - can't read header back\n", __func__);
2742fd88
AC		 1276 kfree(vheader);
1277 kfree(header);
1278 kfree(rom_desc);
1279 kfree(ti_manuf_desc);
1da177e4
LT		 1280 return status;
1281 }
1282 if (memcmp(vheader, header, HEADER_SIZE)) {
67e6da70 1283 dev_dbg(dev, "%s - write download record failed\n", __func__);
2742fd88
AC		 1284 kfree(vheader);
1285 kfree(header);
1286 kfree(rom_desc);
1287 kfree(ti_manuf_desc);
1e29709e 1288 return -EINVAL;
1da177e4
LT		 1289 }
1290
2742fd88
AC		 1291 kfree(vheader);
1292 kfree(header);
1da177e4 1293
67e6da70 1294 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1da177e4 1295
2742fd88
AC		 1296 /* Tell firmware to copy download image into I2C */
1297 status = ti_vsend_sync(serial->serial->dev,
1298 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1da177e4 1299
67e6da70 1300 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1da177e4 1301 if (status) {
2742fd88
AC		 1302 dev_err(dev,
1303 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1304 __func__);
1305 kfree(rom_desc);
1306 kfree(ti_manuf_desc);
1da177e4
LT		 1307 return status;
1308 }
1309 }
1310
1311 // The device is running the download code
2742fd88
AC		 1312 kfree(rom_desc);
1313 kfree(ti_manuf_desc);
1da177e4
LT		 1314 return 0;
1315 }
1316
1317 /********************************************************************/
1318 /* Boot Mode */
1319 /********************************************************************/
67e6da70 1320 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1da177e4 1321
2742fd88
AC		 1322 /* Configure the TI device so we can use the BULK pipes for download */
1323 status = config_boot_dev(serial->serial->dev);
1da177e4
LT		 1324 if (status)
1325 return status;
1326
2742fd88
AC		 1327 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1328 != USB_VENDOR_ID_ION) {
67e6da70
GKH		 1329 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1330 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1da177e4 1331 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
2742fd88 1332 goto stayinbootmode;
1da177e4
LT		 1333 }
1334
2742fd88
AC		 1335 /* We have an ION device (I2c Must be programmed)
1336 Determine I2C image type */
1337 if (i2c_type_bootmode(serial))
1338 goto stayinbootmode;
1da177e4 1339
2742fd88
AC		 1340 /* Check for ION Vendor ID and that the I2C is valid */
1341 if (!check_i2c_image(serial)) {
1da177e4
LT		 1342 struct ti_i2c_image_header *header;
1343 int i;
1344 __u8 cs = 0;
1345 __u8 *buffer;
1346 int buffer_size;
d12b219a
JS		 1347 int err;
1348 const struct firmware *fw;
1349 const char *fw_name = "edgeport/down3.bin";
1da177e4
LT		 1350
1351 /* Validate Hardware version number
1352 * Read Manufacturing Descriptor from TI Based Edgeport
1353 */
2742fd88 1354 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1da177e4 1355 if (!ti_manuf_desc) {
2742fd88 1356 dev_err(dev, "%s - out of memory.\n", __func__);
1da177e4
LT		 1357 return -ENOMEM;
1358 }
2742fd88 1359 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1da177e4 1360 if (status) {
2742fd88
AC		 1361 kfree(ti_manuf_desc);
1362 goto stayinbootmode;
1da177e4
LT		 1363 }
1364
2742fd88
AC		 1365 /* Check for version 2 */
1366 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
67e6da70
GKH		 1367 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1368 __func__, ti_cpu_rev(ti_manuf_desc));
2742fd88
AC		 1369 kfree(ti_manuf_desc);
1370 goto stayinbootmode;
1da177e4
LT		 1371 }
1372
2742fd88 1373 kfree(ti_manuf_desc);
1da177e4 1374
1da177e4 1375 /*
2742fd88
AC		 1376 * In order to update the I2C firmware we must change the type
1377 * 2 record to type 0xF2. This will force the UMP to come up
1378 * in Boot Mode. Then while in boot mode, the driver will
1379 * download the latest firmware (padded to 15.5k) into the
1380 * UMP ram. Finally when the device comes back up in download
1381 * mode the driver will cause the new firmware to be copied
1382 * from the UMP Ram to I2C and the firmware will update the
1383 * record type from 0xf2 to 0x02.
1384 *
1da177e4
LT		 1385 * Do we really have to copy the whole firmware image,
1386 * or could we do this in place!
1387 */
1388
2742fd88
AC		 1389 /* Allocate a 15.5k buffer + 3 byte header */
1390 buffer_size = (((1024 * 16) - 512) +
1391 sizeof(struct ti_i2c_image_header));
1392 buffer = kmalloc(buffer_size, GFP_KERNEL);
1da177e4 1393 if (!buffer) {
2742fd88 1394 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 1395 return -ENOMEM;
1396 }
2742fd88
AC		 1397
1398 /* Initialize the buffer to 0xff (pad the buffer) */
1399 memset(buffer, 0xff, buffer_size);
1da177e4 1400
d12b219a
JS		 1401 err = request_firmware(&fw, fw_name, dev);
1402 if (err) {
d9bb03dc
GKH		 1403 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1404 fw_name, err);
d12b219a
JS		 1405 kfree(buffer);
1406 return err;
1407 }
1408 memcpy(buffer, &fw->data[4], fw->size - 4);
1409 release_firmware(fw);
1da177e4 1410
2742fd88
AC		 1411 for (i = sizeof(struct ti_i2c_image_header);
1412 i < buffer_size; i++) {
1da177e4
LT		 1413 cs = (__u8)(cs + buffer[i]);
1414 }
2742fd88 1415
1da177e4 1416 header = (struct ti_i2c_image_header *)buffer;
2742fd88
AC		 1417
1418 /* update length and checksum after padding */
1419 header->Length = cpu_to_le16((__u16)(buffer_size -
1420 sizeof(struct ti_i2c_image_header)));
1da177e4
LT		 1421 header->CheckSum = cs;
1422
2742fd88 1423 /* Download the operational code */
67e6da70 1424 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
2742fd88 1425 status = download_code(serial, buffer, buffer_size);
1da177e4 1426
2742fd88 1427 kfree(buffer);
1da177e4
LT		 1428
1429 if (status) {
67e6da70 1430 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1da177e4
LT		 1431 return status;
1432 }
1433
2742fd88 1434 /* Device will reboot */
1da177e4
LT		 1435 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1436
67e6da70 1437 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1da177e4
LT		 1438
1439 /* return an error on purpose */
1440 return -ENODEV;
1441 }
1442
2742fd88
AC		 1443stayinbootmode:
1444 /* Eprom is invalid or blank stay in boot mode */
67e6da70 1445 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1da177e4
LT		 1446 serial->product_info.TiMode = TI_MODE_BOOT;
1447
1448 return 0;
1449}
1450
1451
2742fd88 1452static int ti_do_config(struct edgeport_port *port, int feature, int on)
1da177e4
LT		 1453{
1454 int port_number = port->port->number - port->port->serial->minor;
2742fd88
AC		 1455 on = !!on; /* 1 or 0 not bitmask */
1456 return send_cmd(port->port->serial->dev,
1457 feature, (__u8)(UMPM_UART1_PORT + port_number),
1458 on, NULL, 0);
1da177e4
LT		 1459}
1460
1da177e4 1461
2742fd88 1462static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1da177e4
LT		 1463{
1464 int status = 0;
1465
67e6da70 1466 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1da177e4 1467
2742fd88 1468 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1da177e4
LT		 1469 if (status)
1470 return status;
2742fd88 1471 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1da177e4
LT		 1472 if (status)
1473 return status;
2742fd88 1474 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1da177e4
LT		 1475}
1476
1da177e4 1477/* Convert TI LSR to standard UART flags */
2742fd88 1478static __u8 map_line_status(__u8 ti_lsr)
1da177e4
LT		 1479{
1480 __u8 lsr = 0;
1481
1482#define MAP_FLAG(flagUmp, flagUart) \
1483 if (ti_lsr & flagUmp) \
1484 lsr |= flagUart;
1485
1486 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1487 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1488 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1489 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
2742fd88
AC		 1490 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1491 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1da177e4
LT		 1492
1493#undef MAP_FLAG
1494
1495 return lsr;
1496}
1497
2742fd88 1498static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1da177e4
LT		 1499{
1500 struct async_icount *icount;
1501 struct tty_struct *tty;
1502
67e6da70 1503 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1da177e4 1504
2742fd88
AC		 1505 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1506 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1da177e4
LT		 1507 icount = &edge_port->icount;
1508
1509 /* update input line counters */
1510 if (msr & EDGEPORT_MSR_DELTA_CTS)
1511 icount->cts++;
1512 if (msr & EDGEPORT_MSR_DELTA_DSR)
1513 icount->dsr++;
1514 if (msr & EDGEPORT_MSR_DELTA_CD)
1515 icount->dcd++;
1516 if (msr & EDGEPORT_MSR_DELTA_RI)
1517 icount->rng++;
2742fd88 1518 wake_up_interruptible(&edge_port->delta_msr_wait);
1da177e4
LT		 1519 }
1520
1521 /* Save the new modem status */
1522 edge_port->shadow_msr = msr & 0xf0;
1523
4a90f09b 1524 tty = tty_port_tty_get(&edge_port->port->port);
1da177e4
LT		 1525 /* handle CTS flow control */
1526 if (tty && C_CRTSCTS(tty)) {
1527 if (msr & EDGEPORT_MSR_CTS) {
1528 tty->hw_stopped = 0;
1529 tty_wakeup(tty);
1530 } else {
1531 tty->hw_stopped = 1;
1532 }
1533 }
4a90f09b 1534 tty_kref_put(tty);
1da177e4
LT		 1535}
1536
2742fd88
AC		 1537static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1538 __u8 lsr, __u8 data)
1da177e4
LT		 1539{
1540 struct async_icount *icount;
2742fd88
AC		 1541 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1542 LSR_FRM_ERR | LSR_BREAK));
4a90f09b 1543 struct tty_struct *tty;
1da177e4 1544
67e6da70 1545 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1da177e4
LT		 1546
1547 edge_port->shadow_lsr = lsr;
1548
2742fd88 1549 if (new_lsr & LSR_BREAK)
1da177e4
LT		 1550 /*
1551 * Parity and Framing errors only count if they
1552 * occur exclusive of a break being received.
1553 */
1554 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1da177e4
LT		 1555
1556 /* Place LSR data byte into Rx buffer */
4a90f09b
AC		 1557 if (lsr_data) {
1558 tty = tty_port_tty_get(&edge_port->port->port);
1559 if (tty) {
1560 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1561 tty_kref_put(tty);
1562 }
1563 }
1da177e4
LT		 1564
1565 /* update input line counters */
1566 icount = &edge_port->icount;
1567 if (new_lsr & LSR_BREAK)
1568 icount->brk++;
1569 if (new_lsr & LSR_OVER_ERR)
1570 icount->overrun++;
1571 if (new_lsr & LSR_PAR_ERR)
1572 icount->parity++;
1573 if (new_lsr & LSR_FRM_ERR)
1574 icount->frame++;
1575}
1576
1577
2742fd88 1578static void edge_interrupt_callback(struct urb *urb)
1da177e4 1579{
cdc97792 1580 struct edgeport_serial *edge_serial = urb->context;
1da177e4
LT		 1581 struct usb_serial_port *port;
1582 struct edgeport_port *edge_port;
67e6da70 1583 struct device *dev;
1da177e4
LT		 1584 unsigned char *data = urb->transfer_buffer;
1585 int length = urb->actual_length;
1586 int port_number;
1587 int function;
ee337c21 1588 int retval;
1da177e4
LT		 1589 __u8 lsr;
1590 __u8 msr;
ee337c21 1591 int status = urb->status;
1da177e4 1592
ee337c21 1593 switch (status) {
1da177e4
LT		 1594 case 0:
1595 /* success */
1596 break;
1597 case -ECONNRESET:
1598 case -ENOENT:
1599 case -ESHUTDOWN:
1600 /* this urb is terminated, clean up */
67e6da70 1601 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
441b62c1 1602 __func__, status);
1da177e4
LT		 1603 return;
1604 default:
ee337c21 1605 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
441b62c1 1606 "%d\n", __func__, status);
1da177e4
LT		 1607 goto exit;
1608 }
1609
1610 if (!length) {
67e6da70 1611 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1da177e4
LT		 1612 goto exit;
1613 }
2742fd88 1614
67e6da70 1615 dev = &edge_serial->serial->dev->dev;
59d33f2f 1616 usb_serial_debug_data(dev, __func__, length, data);
2742fd88 1617
1da177e4 1618 if (length != 2) {
67e6da70 1619 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1da177e4
LT		 1620 goto exit;
1621 }
1622
2742fd88
AC		 1623 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1624 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
67e6da70
GKH		 1625 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1626 port_number, function, data[1]);
1da177e4
LT		 1627 port = edge_serial->serial->port[port_number];
1628 edge_port = usb_get_serial_port_data(port);
1629 if (!edge_port) {
67e6da70 1630 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1da177e4
LT		 1631 return;
1632 }
1633 switch (function) {
1634 case TIUMP_INTERRUPT_CODE_LSR:
2742fd88 1635 lsr = map_line_status(data[1]);
1da177e4 1636 if (lsr & UMP_UART_LSR_DATA_MASK) {
2742fd88
AC		 1637 /* Save the LSR event for bulk read
1638 completion routine */
67e6da70
GKH		 1639 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1640 __func__, port_number, lsr);
1da177e4
LT		 1641 edge_port->lsr_event = 1;
1642 edge_port->lsr_mask = lsr;
1643 } else {
67e6da70
GKH		 1644 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1645 __func__, port_number, lsr);
2742fd88 1646 handle_new_lsr(edge_port, 0, lsr, 0);
1da177e4
LT		 1647 }
1648 break;
1649
2742fd88 1650 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1da177e4
LT		 1651 /* Copy MSR from UMP */
1652 msr = data[1];
67e6da70
GKH		 1653 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1654 __func__, port_number, msr);
2742fd88 1655 handle_new_msr(edge_port, msr);
1da177e4
LT		 1656 break;
1657
1658 default:
2742fd88
AC		 1659 dev_err(&urb->dev->dev,
1660 "%s - Unknown Interrupt code from UMP %x\n",
1661 __func__, data[1]);
1da177e4 1662 break;
2742fd88 1663
1da177e4
LT		 1664 }
1665
1666exit:
2742fd88 1667 retval = usb_submit_urb(urb, GFP_ATOMIC);
ee337c21 1668 if (retval)
2742fd88
AC		 1669 dev_err(&urb->dev->dev,
1670 "%s - usb_submit_urb failed with result %d\n",
441b62c1 1671 __func__, retval);
1da177e4
LT		 1672}
1673
2742fd88 1674static void edge_bulk_in_callback(struct urb *urb)
1da177e4 1675{
cdc97792 1676 struct edgeport_port *edge_port = urb->context;
67e6da70 1677 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1678 unsigned char *data = urb->transfer_buffer;
1679 struct tty_struct *tty;
ee337c21 1680 int retval = 0;
1da177e4 1681 int port_number;
ee337c21 1682 int status = urb->status;
1da177e4 1683
ee337c21 1684 switch (status) {
1da177e4
LT		 1685 case 0:
1686 /* success */
1687 break;
1688 case -ECONNRESET:
1689 case -ENOENT:
1690 case -ESHUTDOWN:
1691 /* this urb is terminated, clean up */
67e6da70 1692 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1da177e4
LT		 1693 return;
1694 default:
67e6da70 1695 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1da177e4
LT		 1696 }
1697
ee337c21 1698 if (status == -EPIPE)
1da177e4
LT		 1699 goto exit;
1700
ee337c21 1701 if (status) {
2742fd88 1702 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1da177e4
LT		 1703 return;
1704 }
1705
1706 port_number = edge_port->port->number - edge_port->port->serial->minor;
1707
1708 if (edge_port->lsr_event) {
1709 edge_port->lsr_event = 0;
67e6da70
GKH		 1710 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1711 __func__, port_number, edge_port->lsr_mask, *data);
2742fd88 1712 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1da177e4
LT		 1713 /* Adjust buffer length/pointer */
1714 --urb->actual_length;
1715 ++data;
1716 }
1717
4a90f09b 1718 tty = tty_port_tty_get(&edge_port->port->port);
1da177e4 1719 if (tty && urb->actual_length) {
59d33f2f 1720 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
2742fd88 1721 if (edge_port->close_pending)
67e6da70 1722 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
2742fd88
AC		 1723 __func__);
1724 else
67e6da70 1725 edge_tty_recv(dev, tty, data, urb->actual_length);
1da177e4
LT		 1726 edge_port->icount.rx += urb->actual_length;
1727 }
4a90f09b 1728 tty_kref_put(tty);
1da177e4
LT		 1729
1730exit:
1731 /* continue read unless stopped */
1732 spin_lock(&edge_port->ep_lock);
5833041f 1733 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
ee337c21 1734 retval = usb_submit_urb(urb, GFP_ATOMIC);
5833041f 1735 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1da177e4 1736 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
5833041f 1737
1da177e4 1738 spin_unlock(&edge_port->ep_lock);
ee337c21 1739 if (retval)
67e6da70 1740 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1da177e4
LT		 1741}
1742
2742fd88
AC		 1743static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1744 unsigned char *data, int length)
1da177e4 1745{
2742fd88 1746 int queued;
1da177e4 1747
2742fd88
AC		 1748 queued = tty_insert_flip_string(tty, data, length);
1749 if (queued < length)
1750 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1751 __func__, length - queued);
1da177e4
LT		 1752 tty_flip_buffer_push(tty);
1753}
1754
2742fd88 1755static void edge_bulk_out_callback(struct urb *urb)
1da177e4 1756{
cdc97792 1757 struct usb_serial_port *port = urb->context;
1da177e4 1758 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
ee337c21 1759 int status = urb->status;
4a90f09b 1760 struct tty_struct *tty;
1da177e4 1761
1da177e4
LT		 1762 edge_port->ep_write_urb_in_use = 0;
1763
ee337c21 1764 switch (status) {
1da177e4
LT		 1765 case 0:
1766 /* success */
1767 break;
1768 case -ECONNRESET:
1769 case -ENOENT:
1770 case -ESHUTDOWN:
1771 /* this urb is terminated, clean up */
67e6da70 1772 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
441b62c1 1773 __func__, status);
1da177e4
LT		 1774 return;
1775 default:
22a416c4 1776 dev_err_console(port, "%s - nonzero write bulk status "
441b62c1 1777 "received: %d\n", __func__, status);
1da177e4
LT		 1778 }
1779
1780 /* send any buffered data */
4a90f09b
AC		 1781 tty = tty_port_tty_get(&port->port);
1782 edge_send(tty);
1783 tty_kref_put(tty);
1da177e4
LT		 1784}
1785
a509a7e4 1786static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4
LT		 1787{
1788 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1789 struct edgeport_serial *edge_serial;
1790 struct usb_device *dev;
1791 struct urb *urb;
1792 int port_number;
1793 int status;
1794 u16 open_settings;
1795 u8 transaction_timeout;
1796
1da177e4
LT		 1797 if (edge_port == NULL)
1798 return -ENODEV;
1799
1da177e4
LT		 1800 port_number = port->number - port->serial->minor;
1801 switch (port_number) {
2742fd88
AC		 1802 case 0:
1803 edge_port->uart_base = UMPMEM_BASE_UART1;
1804 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1805 break;
1806 case 1:
1807 edge_port->uart_base = UMPMEM_BASE_UART2;
1808 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1809 break;
1810 default:
1811 dev_err(&port->dev, "Unknown port number!!!\n");
1812 return -ENODEV;
1da177e4
LT		 1813 }
1814
67e6da70
GKH		 1815 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1816 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1da177e4
LT		 1817
1818 dev = port->serial->dev;
1819
2742fd88
AC		 1820 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1821 init_waitqueue_head(&edge_port->delta_msr_wait);
1da177e4
LT		 1822
1823 /* turn off loopback */
2742fd88 1824 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1da177e4 1825 if (status) {
2742fd88
AC		 1826 dev_err(&port->dev,
1827 "%s - cannot send clear loopback command, %d\n",
441b62c1 1828 __func__, status);
1da177e4
LT		 1829 return status;
1830 }
2742fd88 1831
1da177e4 1832 /* set up the port settings */
95da310e 1833 if (tty)
adc8d746 1834 edge_set_termios(tty, port, &tty->termios);
1da177e4
LT		 1835
1836 /* open up the port */
1837
1838 /* milliseconds to timeout for DMA transfer */
1839 transaction_timeout = 2;
1840
2742fd88
AC		 1841 edge_port->ump_read_timeout =
1842 max(20, ((transaction_timeout * 3) / 2));
1da177e4 1843
2742fd88
AC		 1844 /* milliseconds to timeout for DMA transfer */
1845 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1846 UMP_PIPE_TRANS_TIMEOUT_ENA |
1da177e4
LT		 1847 (transaction_timeout << 2));
1848
67e6da70 1849 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1da177e4
LT		 1850
1851 /* Tell TI to open and start the port */
2742fd88
AC		 1852 status = send_cmd(dev, UMPC_OPEN_PORT,
1853 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1da177e4 1854 if (status) {
2742fd88
AC		 1855 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1856 __func__, status);
1da177e4
LT		 1857 return status;
1858 }
1859
1860 /* Start the DMA? */
2742fd88
AC		 1861 status = send_cmd(dev, UMPC_START_PORT,
1862 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1da177e4 1863 if (status) {
2742fd88
AC		 1864 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1865 __func__, status);
1da177e4
LT		 1866 return status;
1867 }
1868
1869 /* Clear TX and RX buffers in UMP */
2742fd88 1870 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1da177e4 1871 if (status) {
2742fd88
AC		 1872 dev_err(&port->dev,
1873 "%s - cannot send clear buffers command, %d\n",
1874 __func__, status);
1da177e4
LT		 1875 return status;
1876 }
1877
1878 /* Read Initial MSR */
2742fd88
AC		 1879 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1880 (__u16)(UMPM_UART1_PORT + port_number),
1881 &edge_port->shadow_msr, 1);
1da177e4 1882 if (status) {
2742fd88
AC		 1883 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1884 __func__, status);
1da177e4
LT		 1885 return status;
1886 }
1887
67e6da70 1888 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
2742fd88 1889
1da177e4
LT		 1890 /* Set Initial MCR */
1891 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
67e6da70 1892 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1da177e4
LT		 1893
1894 edge_serial = edge_port->edge_serial;
241ca64f 1895 if (mutex_lock_interruptible(&edge_serial->es_lock))
1da177e4
LT		 1896 return -ERESTARTSYS;
1897 if (edge_serial->num_ports_open == 0) {
2742fd88 1898 /* we are the first port to open, post the interrupt urb */
1da177e4
LT		 1899 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1900 if (!urb) {
2742fd88
AC		 1901 dev_err(&port->dev,
1902 "%s - no interrupt urb present, exiting\n",
1903 __func__);
1da177e4 1904 status = -EINVAL;
241ca64f 1905 goto release_es_lock;
1da177e4 1906 }
1da177e4 1907 urb->context = edge_serial;
2742fd88 1908 status = usb_submit_urb(urb, GFP_KERNEL);
1da177e4 1909 if (status) {
2742fd88
AC		 1910 dev_err(&port->dev,
1911 "%s - usb_submit_urb failed with value %d\n",
1912 __func__, status);
241ca64f 1913 goto release_es_lock;
1da177e4
LT		 1914 }
1915 }
1916
1917 /*
1918 * reset the data toggle on the bulk endpoints to work around bug in
1919 * host controllers where things get out of sync some times
1920 */
2742fd88
AC		 1921 usb_clear_halt(dev, port->write_urb->pipe);
1922 usb_clear_halt(dev, port->read_urb->pipe);
1da177e4
LT		 1923
1924 /* start up our bulk read urb */
1925 urb = port->read_urb;
1926 if (!urb) {
2742fd88
AC		 1927 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1928 __func__);
1da177e4
LT		 1929 status = -EINVAL;
1930 goto unlink_int_urb;
1931 }
1932 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1da177e4 1933 urb->context = edge_port;
2742fd88 1934 status = usb_submit_urb(urb, GFP_KERNEL);
1da177e4 1935 if (status) {
2742fd88
AC		 1936 dev_err(&port->dev,
1937 "%s - read bulk usb_submit_urb failed with value %d\n",
1938 __func__, status);
1da177e4
LT		 1939 goto unlink_int_urb;
1940 }
1941
1942 ++edge_serial->num_ports_open;
1943
241ca64f 1944 goto release_es_lock;
1da177e4
LT		 1945
1946unlink_int_urb:
1947 if (edge_port->edge_serial->num_ports_open == 0)
1948 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
241ca64f
MK		 1949release_es_lock:
1950 mutex_unlock(&edge_serial->es_lock);
1da177e4
LT		 1951 return status;
1952}
1953
335f8514 1954static void edge_close(struct usb_serial_port *port)
1da177e4
LT		 1955{
1956 struct edgeport_serial *edge_serial;
1957 struct edgeport_port *edge_port;
af581059 1958 struct usb_serial *serial = port->serial;
1da177e4 1959 int port_number;
1da177e4 1960
1da177e4
LT		 1961 edge_serial = usb_get_serial_data(port->serial);
1962 edge_port = usb_get_serial_port_data(port);
2742fd88 1963 if (edge_serial == NULL || edge_port == NULL)
1da177e4 1964 return;
2742fd88
AC		 1965
1966 /* The bulkreadcompletion routine will check
1da177e4
LT		 1967 * this flag and dump add read data */
1968 edge_port->close_pending = 1;
1969
1970 /* chase the port close and flush */
2742fd88 1971 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
1da177e4
LT		 1972
1973 usb_kill_urb(port->read_urb);
1974 usb_kill_urb(port->write_urb);
1975 edge_port->ep_write_urb_in_use = 0;
1976
1977 /* assuming we can still talk to the device,
1978 * send a close port command to it */
67e6da70 1979 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1da177e4 1980 port_number = port->number - port->serial->minor;
af581059
JH		 1981
1982 mutex_lock(&serial->disc_mutex);
1983 if (!serial->disconnected) {
1984 send_cmd(serial->dev,
1da177e4
LT		 1985 UMPC_CLOSE_PORT,
1986 (__u8)(UMPM_UART1_PORT + port_number),
1987 0,
1988 NULL,
1989 0);
af581059
JH		 1990 }
1991 mutex_unlock(&serial->disc_mutex);
1992
241ca64f 1993 mutex_lock(&edge_serial->es_lock);
1da177e4
LT		 1994 --edge_port->edge_serial->num_ports_open;
1995 if (edge_port->edge_serial->num_ports_open <= 0) {
1996 /* last port is now closed, let's shut down our interrupt urb */
1997 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1998 edge_port->edge_serial->num_ports_open = 0;
1999 }
241ca64f 2000 mutex_unlock(&edge_serial->es_lock);
1da177e4 2001 edge_port->close_pending = 0;
1da177e4
LT		 2002}
2003
95da310e
AC		 2004static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2005 const unsigned char *data, int count)
1da177e4
LT		 2006{
2007 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4 2008
1da177e4 2009 if (count == 0) {
67e6da70 2010 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1da177e4
LT		 2011 return 0;
2012 }
2013
2014 if (edge_port == NULL)
2015 return -ENODEV;
2016 if (edge_port->close_pending == 1)
2017 return -ENODEV;
2018
d733cec1
JH		 2019 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2020 &edge_port->ep_lock);
95da310e 2021 edge_send(tty);
1da177e4
LT		 2022
2023 return count;
2024}
2025
95da310e 2026static void edge_send(struct tty_struct *tty)
1da177e4 2027{
95da310e 2028 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2029 int count, result;
2030 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 2031 unsigned long flags;
2032
1da177e4
LT		 2033 spin_lock_irqsave(&edge_port->ep_lock, flags);
2034
2035 if (edge_port->ep_write_urb_in_use) {
2036 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2037 return;
2038 }
2039
d733cec1 2040 count = kfifo_out(&edge_port->write_fifo,
1da177e4
LT		 2041 port->write_urb->transfer_buffer,
2042 port->bulk_out_size);
2043
2044 if (count == 0) {
2045 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2046 return;
2047 }
2048
2049 edge_port->ep_write_urb_in_use = 1;
2050
2051 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2052
59d33f2f 2053 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1da177e4
LT		 2054
2055 /* set up our urb */
fd11961a 2056 port->write_urb->transfer_buffer_length = count;
1da177e4
LT		 2057
2058 /* send the data out the bulk port */
2059 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2060 if (result) {
22a416c4 2061 dev_err_console(port,
2742fd88
AC		 2062 "%s - failed submitting write urb, error %d\n",
2063 __func__, result);
1da177e4 2064 edge_port->ep_write_urb_in_use = 0;
2742fd88
AC		 2065 /* TODO: reschedule edge_send */
2066 } else
1da177e4 2067 edge_port->icount.tx += count;
1da177e4
LT		 2068
2069 /* wakeup any process waiting for writes to complete */
2070 /* there is now more room in the buffer for new writes */
2742fd88 2071 if (tty)
1da177e4 2072 tty_wakeup(tty);
1da177e4
LT		 2073}
2074
95da310e 2075static int edge_write_room(struct tty_struct *tty)
1da177e4 2076{
95da310e 2077 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2078 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2079 int room = 0;
2080 unsigned long flags;
2081
1da177e4 2082 if (edge_port == NULL)
2742fd88 2083 return 0;
1da177e4 2084 if (edge_port->close_pending == 1)
2742fd88 2085 return 0;
1da177e4
LT		 2086
2087 spin_lock_irqsave(&edge_port->ep_lock, flags);
d733cec1 2088 room = kfifo_avail(&edge_port->write_fifo);
1da177e4
LT		 2089 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2090
67e6da70 2091 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1da177e4
LT		 2092 return room;
2093}
2094
95da310e 2095static int edge_chars_in_buffer(struct tty_struct *tty)
1da177e4 2096{
95da310e 2097 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2098 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2099 int chars = 0;
2100 unsigned long flags;
2101
1da177e4 2102 if (edge_port == NULL)
2742fd88 2103 return 0;
1da177e4 2104 if (edge_port->close_pending == 1)
2742fd88 2105 return 0;
1da177e4
LT		 2106
2107 spin_lock_irqsave(&edge_port->ep_lock, flags);
d733cec1 2108 chars = kfifo_len(&edge_port->write_fifo);
1da177e4
LT		 2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2110
67e6da70 2111 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
1da177e4
LT		 2112 return chars;
2113}
2114
95da310e 2115static void edge_throttle(struct tty_struct *tty)
1da177e4 2116{
95da310e 2117 struct usb_serial_port *port = tty->driver_data;
1da177e4 2118 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 2119 int status;
2120
1da177e4
LT		 2121 if (edge_port == NULL)
2122 return;
2123
1da177e4
LT		 2124 /* if we are implementing XON/XOFF, send the stop character */
2125 if (I_IXOFF(tty)) {
2126 unsigned char stop_char = STOP_CHAR(tty);
95da310e
AC		 2127 status = edge_write(tty, port, &stop_char, 1);
2128 if (status <= 0) {
2129 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2130 }
1da177e4
LT		 2131 }
2132
2133 /* if we are implementing RTS/CTS, stop reads */
2134 /* and the Edgeport will clear the RTS line */
2135 if (C_CRTSCTS(tty))
2136 stop_read(edge_port);
2137
2138}
2139
95da310e 2140static void edge_unthrottle(struct tty_struct *tty)
1da177e4 2141{
95da310e 2142 struct usb_serial_port *port = tty->driver_data;
1da177e4 2143 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 2144 int status;
2145
1da177e4
LT		 2146 if (edge_port == NULL)
2147 return;
2148
1da177e4
LT		 2149 /* if we are implementing XON/XOFF, send the start character */
2150 if (I_IXOFF(tty)) {
2151 unsigned char start_char = START_CHAR(tty);
95da310e
AC		 2152 status = edge_write(tty, port, &start_char, 1);
2153 if (status <= 0) {
2154 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2155 }
1da177e4 2156 }
1da177e4
LT		 2157 /* if we are implementing RTS/CTS, restart reads */
2158 /* are the Edgeport will assert the RTS line */
2159 if (C_CRTSCTS(tty)) {
2160 status = restart_read(edge_port);
2161 if (status)
2742fd88
AC		 2162 dev_err(&port->dev,
2163 "%s - read bulk usb_submit_urb failed: %d\n",
2164 __func__, status);
1da177e4
LT		 2165 }
2166
2167}
2168
2169static void stop_read(struct edgeport_port *edge_port)
2170{
2171 unsigned long flags;
2172
2173 spin_lock_irqsave(&edge_port->ep_lock, flags);
2174
2175 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2176 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2177 edge_port->shadow_mcr &= ~MCR_RTS;
2178
2179 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2180}
2181
2182static int restart_read(struct edgeport_port *edge_port)
2183{
2184 struct urb *urb;
2185 int status = 0;
2186 unsigned long flags;
2187
2188 spin_lock_irqsave(&edge_port->ep_lock, flags);
2189
2190 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2191 urb = edge_port->port->read_urb;
efdff608 2192 status = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4
LT		 2193 }
2194 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2195 edge_port->shadow_mcr |= MCR_RTS;
2196
2197 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2198
2199 return status;
2200}
2201
95da310e
AC		 2202static void change_port_settings(struct tty_struct *tty,
2203 struct edgeport_port *edge_port, struct ktermios *old_termios)
1da177e4 2204{
67e6da70 2205 struct device *dev = &edge_port->port->dev;
1da177e4 2206 struct ump_uart_config *config;
1da177e4
LT		 2207 int baud;
2208 unsigned cflag;
2209 int status;
2742fd88
AC		 2210 int port_number = edge_port->port->number -
2211 edge_port->port->serial->minor;
1da177e4 2212
67e6da70 2213 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
1da177e4 2214
95da310e 2215 config = kmalloc (sizeof (*config), GFP_KERNEL);
1da177e4 2216 if (!config) {
adc8d746 2217 tty->termios = *old_termios;
67e6da70 2218 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 2219 return;
2220 }
2221
adc8d746 2222 cflag = tty->termios.c_cflag;
1da177e4
LT		 2223
2224 config->wFlags = 0;
2225
2226 /* These flags must be set */
2227 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2228 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2229 config->bUartMode = (__u8)(edge_port->bUartMode);
2230
2231 switch (cflag & CSIZE) {
2742fd88
AC		 2232 case CS5:
2233 config->bDataBits = UMP_UART_CHAR5BITS;
67e6da70 2234 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2742fd88
AC		 2235 break;
2236 case CS6:
2237 config->bDataBits = UMP_UART_CHAR6BITS;
67e6da70 2238 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2742fd88
AC		 2239 break;
2240 case CS7:
2241 config->bDataBits = UMP_UART_CHAR7BITS;
67e6da70 2242 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2742fd88
AC		 2243 break;
2244 default:
2245 case CS8:
2246 config->bDataBits = UMP_UART_CHAR8BITS;
67e6da70 2247 dev_dbg(dev, "%s - data bits = 8\n", __func__);
1da177e4
LT		 2248 break;
2249 }
2250
2251 if (cflag & PARENB) {
2252 if (cflag & PARODD) {
2253 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2254 config->bParity = UMP_UART_ODDPARITY;
67e6da70 2255 dev_dbg(dev, "%s - parity = odd\n", __func__);
1da177e4
LT		 2256 } else {
2257 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2258 config->bParity = UMP_UART_EVENPARITY;
67e6da70 2259 dev_dbg(dev, "%s - parity = even\n", __func__);
1da177e4
LT		 2260 }
2261 } else {
2742fd88 2262 config->bParity = UMP_UART_NOPARITY;
67e6da70 2263 dev_dbg(dev, "%s - parity = none\n", __func__);
1da177e4
LT		 2264 }
2265
2266 if (cflag & CSTOPB) {
2267 config->bStopBits = UMP_UART_STOPBIT2;
67e6da70 2268 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
1da177e4
LT		 2269 } else {
2270 config->bStopBits = UMP_UART_STOPBIT1;
67e6da70 2271 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
1da177e4
LT		 2272 }
2273
2274 /* figure out the flow control settings */
2275 if (cflag & CRTSCTS) {
2276 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2277 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
67e6da70 2278 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
1da177e4 2279 } else {
67e6da70 2280 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
1da177e4
LT		 2281 tty->hw_stopped = 0;
2282 restart_read(edge_port);
2283 }
2284
2742fd88
AC		 2285 /* if we are implementing XON/XOFF, set the start and stop
2286 character in the device */
2287 config->cXon = START_CHAR(tty);
2288 config->cXoff = STOP_CHAR(tty);
1da177e4 2289
2742fd88
AC		 2290 /* if we are implementing INBOUND XON/XOFF */
2291 if (I_IXOFF(tty)) {
2292 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
67e6da70
GKH		 2293 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2294 __func__, config->cXon, config->cXoff);
2742fd88 2295 } else
67e6da70 2296 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
1da177e4 2297
2742fd88
AC		 2298 /* if we are implementing OUTBOUND XON/XOFF */
2299 if (I_IXON(tty)) {
2300 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
67e6da70
GKH		 2301 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2302 __func__, config->cXon, config->cXoff);
2742fd88 2303 } else
67e6da70 2304 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
1da177e4 2305
adc8d746 2306 tty->termios.c_cflag &= ~CMSPAR;
d5f5bcd4 2307
1da177e4
LT		 2308 /* Round the baud rate */
2309 baud = tty_get_baud_rate(tty);
2310 if (!baud) {
2311 /* pick a default, any default... */
2312 baud = 9600;
d5f5bcd4
AC		 2313 } else
2314 tty_encode_baud_rate(tty, baud, baud);
2315
1da177e4
LT		 2316 edge_port->baud_rate = baud;
2317 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2318
d5f5bcd4
AC		 2319 /* FIXME: Recompute actual baud from divisor here */
2320
67e6da70 2321 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
1da177e4 2322
67e6da70
GKH		 2323 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2324 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2325 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2326 dev_dbg(dev, "bParity: %d\n", config->bParity);
2327 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2328 dev_dbg(dev, "cXon: %d\n", config->cXon);
2329 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2330 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
1da177e4
LT		 2331
2332 /* move the word values into big endian mode */
2742fd88
AC		 2333 cpu_to_be16s(&config->wFlags);
2334 cpu_to_be16s(&config->wBaudRate);
1da177e4 2335
2742fd88 2336 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
1da177e4 2337 (__u8)(UMPM_UART1_PORT + port_number),
2742fd88
AC		 2338 0, (__u8 *)config, sizeof(*config));
2339 if (status)
67e6da70
GKH		 2340 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2341 __func__, status);
2742fd88 2342 kfree(config);
1da177e4
LT		 2343}
2344
2e0ddd62 2345static void edge_set_termios(struct tty_struct *tty,
95da310e 2346 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4
LT		 2347{
2348 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
95da310e
AC		 2349 unsigned int cflag;
2350
adc8d746 2351 cflag = tty->termios.c_cflag;
1da177e4 2352
67e6da70 2353 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
d9a80746 2354 tty->termios.c_cflag, tty->termios.c_iflag);
67e6da70
GKH		 2355 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2356 old_termios->c_cflag, old_termios->c_iflag);
2357 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
1da177e4
LT		 2358
2359 if (edge_port == NULL)
2360 return;
1da177e4 2361 /* change the port settings to the new ones specified */
95da310e 2362 change_port_settings(tty, edge_port, old_termios);
1da177e4
LT		 2363}
2364
20b9d177 2365static int edge_tiocmset(struct tty_struct *tty,
2742fd88 2366 unsigned int set, unsigned int clear)
1da177e4 2367{
95da310e 2368 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2369 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2370 unsigned int mcr;
3d71fe0b 2371 unsigned long flags;
1da177e4 2372
3d71fe0b 2373 spin_lock_irqsave(&edge_port->ep_lock, flags);
1da177e4
LT		 2374 mcr = edge_port->shadow_mcr;
2375 if (set & TIOCM_RTS)
2376 mcr |= MCR_RTS;
2377 if (set & TIOCM_DTR)
2378 mcr |= MCR_DTR;
2379 if (set & TIOCM_LOOP)
2380 mcr |= MCR_LOOPBACK;
2381
2382 if (clear & TIOCM_RTS)
2383 mcr &= ~MCR_RTS;
2384 if (clear & TIOCM_DTR)
2385 mcr &= ~MCR_DTR;
2386 if (clear & TIOCM_LOOP)
2387 mcr &= ~MCR_LOOPBACK;
2388
2389 edge_port->shadow_mcr = mcr;
3d71fe0b 2390 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1da177e4 2391
2742fd88 2392 restore_mcr(edge_port, mcr);
1da177e4
LT		 2393 return 0;
2394}
2395
60b33c13 2396static int edge_tiocmget(struct tty_struct *tty)
1da177e4 2397{
95da310e 2398 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2399 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2400 unsigned int result = 0;
2401 unsigned int msr;
2402 unsigned int mcr;
3d71fe0b 2403 unsigned long flags;
1da177e4 2404
3d71fe0b
AC		 2405 spin_lock_irqsave(&edge_port->ep_lock, flags);
2406
1da177e4
LT		 2407 msr = edge_port->shadow_msr;
2408 mcr = edge_port->shadow_mcr;
2409 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2410 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2411 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2412 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2413 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2414 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2415
2416
67e6da70 2417 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
3d71fe0b 2418 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1da177e4
LT		 2419
2420 return result;
2421}
2422
0bca1b91
AC		 2423static int edge_get_icount(struct tty_struct *tty,
2424 struct serial_icounter_struct *icount)
2425{
2426 struct usb_serial_port *port = tty->driver_data;
2427 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2428 struct async_icount *ic = &edge_port->icount;
2429
2430 icount->cts = ic->cts;
2431 icount->dsr = ic->dsr;
2432 icount->rng = ic->rng;
2433 icount->dcd = ic->dcd;
2434 icount->tx = ic->tx;
2435 icount->rx = ic->rx;
2436 icount->frame = ic->frame;
2437 icount->parity = ic->parity;
2438 icount->overrun = ic->overrun;
2439 icount->brk = ic->brk;
2440 icount->buf_overrun = ic->buf_overrun;
2441 return 0;
2442}
2443
2742fd88
AC		 2444static int get_serial_info(struct edgeport_port *edge_port,
2445 struct serial_struct __user *retinfo)
1da177e4
LT		 2446{
2447 struct serial_struct tmp;
2448
2449 if (!retinfo)
2450 return -EFAULT;
2451
2452 memset(&tmp, 0, sizeof(tmp));
2453
2454 tmp.type = PORT_16550A;
2455 tmp.line = edge_port->port->serial->minor;
2456 tmp.port = edge_port->port->number;
2457 tmp.irq = 0;
2458 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2459 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2460 tmp.baud_base = 9600;
2461 tmp.close_delay = 5*HZ;
2462 tmp.closing_wait = closing_wait;
1da177e4
LT		 2463
2464 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2465 return -EFAULT;
2466 return 0;
2467}
2468
00a0d0d6 2469static int edge_ioctl(struct tty_struct *tty,
2742fd88 2470 unsigned int cmd, unsigned long arg)
1da177e4 2471{
95da310e 2472 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2473 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2474 struct async_icount cnow;
2475 struct async_icount cprev;
2476
67e6da70 2477 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
1da177e4
LT		 2478
2479 switch (cmd) {
2742fd88 2480 case TIOCGSERIAL:
67e6da70 2481 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2742fd88
AC		 2482 return get_serial_info(edge_port,
2483 (struct serial_struct __user *) arg);
2484 case TIOCMIWAIT:
67e6da70 2485 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2742fd88
AC		 2486 cprev = edge_port->icount;
2487 while (1) {
2488 interruptible_sleep_on(&edge_port->delta_msr_wait);
2489 /* see if a signal did it */
2490 if (signal_pending(current))
2491 return -ERESTARTSYS;
2492 cnow = edge_port->icount;
2493 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2494 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2495 return -EIO; /* no change => error */
2496 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2497 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2498 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2499 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2500 return 0;
1da177e4 2501 }
2742fd88
AC		 2502 cprev = cnow;
2503 }
2504 /* not reached */
2505 break;
1da177e4 2506 }
1da177e4
LT		 2507 return -ENOIOCTLCMD;
2508}
2509
95da310e 2510static void edge_break(struct tty_struct *tty, int break_state)
1da177e4 2511{
95da310e 2512 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2514 int status;
2742fd88 2515 int bv = 0; /* Off */
1da177e4 2516
1da177e4 2517 /* chase the port close */
2742fd88 2518 chase_port(edge_port, 0, 0);
1da177e4 2519
95da310e 2520 if (break_state == -1)
2742fd88
AC		 2521 bv = 1; /* On */
2522 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2523 if (status)
67e6da70
GKH		 2524 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2525 __func__, status);
1da177e4
LT		 2526}
2527
2742fd88 2528static int edge_startup(struct usb_serial *serial)
1da177e4
LT		 2529{
2530 struct edgeport_serial *edge_serial;
1da177e4 2531 int status;
1da177e4
LT		 2532
2533 /* create our private serial structure */
80b6ca48 2534 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
1da177e4 2535 if (edge_serial == NULL) {
441b62c1 2536 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
1da177e4
LT		 2537 return -ENOMEM;
2538 }
241ca64f 2539 mutex_init(&edge_serial->es_lock);
1da177e4
LT		 2540 edge_serial->serial = serial;
2541 usb_set_serial_data(serial, edge_serial);
2542
2742fd88 2543 status = download_fw(edge_serial);
1da177e4 2544 if (status) {
2742fd88 2545 kfree(edge_serial);
1da177e4
LT		 2546 return status;
2547 }
2548
1da177e4 2549 return 0;
1da177e4
LT		 2550}
2551
f9c99bb8 2552static void edge_disconnect(struct usb_serial *serial)
1da177e4 2553{
f9c99bb8
AS		 2554}
2555
2556static void edge_release(struct usb_serial *serial)
2557{
00361530
JH		 2558 kfree(usb_get_serial_data(serial));
2559}
2560
2561static int edge_port_probe(struct usb_serial_port *port)
2562{
f9c99bb8 2563 struct edgeport_port *edge_port;
00361530 2564 int ret;
f9c99bb8 2565
00361530
JH		 2566 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2567 if (!edge_port)
2568 return -ENOMEM;
2569
2570 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2571 GFP_KERNEL);
2572 if (ret) {
2573 kfree(edge_port);
2574 return -ENOMEM;
2575 }
2576
00361530
JH		 2577 spin_lock_init(&edge_port->ep_lock);
2578 edge_port->port = port;
2579 edge_port->edge_serial = usb_get_serial_data(port->serial);
2580 edge_port->bUartMode = default_uart_mode;
2581
2582 usb_set_serial_port_data(port, edge_port);
2583
5d8c61bc
JH		 2584 ret = edge_create_sysfs_attrs(port);
2585 if (ret) {
2586 kfifo_free(&edge_port->write_fifo);
2587 kfree(edge_port);
2588 return ret;
2589 }
2590
00361530 2591 return 0;
1da177e4
LT		 2592}
2593
00361530
JH		 2594static int edge_port_remove(struct usb_serial_port *port)
2595{
2596 struct edgeport_port *edge_port;
2597
2598 edge_port = usb_get_serial_port_data(port);
2599
2600 edge_remove_sysfs_attrs(port);
2601 kfifo_free(&edge_port->write_fifo);
2602 kfree(edge_port);
2603
2604 return 0;
2605}
1da177e4 2606
fc4cbd75
MP		 2607/* Sysfs Attributes */
2608
2609static ssize_t show_uart_mode(struct device *dev,
2610 struct device_attribute *attr, char *buf)
2611{
2612 struct usb_serial_port *port = to_usb_serial_port(dev);
2613 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2614
2615 return sprintf(buf, "%d\n", edge_port->bUartMode);
2616}
2617
2618static ssize_t store_uart_mode(struct device *dev,
2619 struct device_attribute *attr, const char *valbuf, size_t count)
2620{
2621 struct usb_serial_port *port = to_usb_serial_port(dev);
2622 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2623 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2624
67e6da70 2625 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
fc4cbd75
MP		 2626
2627 if (v < 256)
2628 edge_port->bUartMode = v;
2629 else
441b62c1 2630 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
fc4cbd75
MP		 2631
2632 return count;
2633}
2634
2742fd88
AC		 2635static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2636 store_uart_mode);
fc4cbd75
MP		 2637
2638static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2639{
2640 return device_create_file(&port->dev, &dev_attr_uart_mode);
2641}
2642
2643static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2644{
2645 device_remove_file(&port->dev, &dev_attr_uart_mode);
2646 return 0;
2647}
2648
2649
ea65370d 2650static struct usb_serial_driver edgeport_1port_device = {
18fcac35 2651 .driver = {
269bda1c
GKH		 2652 .owner = THIS_MODULE,
2653 .name = "edgeport_ti_1",
18fcac35 2654 },
269bda1c 2655 .description = "Edgeport TI 1 port adapter",
1da177e4 2656 .id_table = edgeport_1port_id_table,
1da177e4
LT		 2657 .num_ports = 1,
2658 .open = edge_open,
2659 .close = edge_close,
2660 .throttle = edge_throttle,
2661 .unthrottle = edge_unthrottle,
2662 .attach = edge_startup,
f9c99bb8
AS		 2663 .disconnect = edge_disconnect,
2664 .release = edge_release,
00361530
JH		 2665 .port_probe = edge_port_probe,
2666 .port_remove = edge_port_remove,
1da177e4
LT		 2667 .ioctl = edge_ioctl,
2668 .set_termios = edge_set_termios,
2669 .tiocmget = edge_tiocmget,
2670 .tiocmset = edge_tiocmset,
0bca1b91 2671 .get_icount = edge_get_icount,
1da177e4
LT		 2672 .write = edge_write,
2673 .write_room = edge_write_room,
2674 .chars_in_buffer = edge_chars_in_buffer,
2675 .break_ctl = edge_break,
2676 .read_int_callback = edge_interrupt_callback,
2677 .read_bulk_callback = edge_bulk_in_callback,
2678 .write_bulk_callback = edge_bulk_out_callback,
2679};
2680
ea65370d 2681static struct usb_serial_driver edgeport_2port_device = {
18fcac35 2682 .driver = {
269bda1c
GKH		 2683 .owner = THIS_MODULE,
2684 .name = "edgeport_ti_2",
18fcac35 2685 },
269bda1c 2686 .description = "Edgeport TI 2 port adapter",
1da177e4 2687 .id_table = edgeport_2port_id_table,
1da177e4
LT		 2688 .num_ports = 2,
2689 .open = edge_open,
2690 .close = edge_close,
2691 .throttle = edge_throttle,
2692 .unthrottle = edge_unthrottle,
2693 .attach = edge_startup,
f9c99bb8
AS		 2694 .disconnect = edge_disconnect,
2695 .release = edge_release,
00361530
JH		 2696 .port_probe = edge_port_probe,
2697 .port_remove = edge_port_remove,
1da177e4
LT		 2698 .ioctl = edge_ioctl,
2699 .set_termios = edge_set_termios,
2700 .tiocmget = edge_tiocmget,
2701 .tiocmset = edge_tiocmset,
2702 .write = edge_write,
2703 .write_room = edge_write_room,
2704 .chars_in_buffer = edge_chars_in_buffer,
2705 .break_ctl = edge_break,
2706 .read_int_callback = edge_interrupt_callback,
2707 .read_bulk_callback = edge_bulk_in_callback,
2708 .write_bulk_callback = edge_bulk_out_callback,
2709};
2710
7dbe2460
AS		 2711static struct usb_serial_driver * const serial_drivers[] = {
2712 &edgeport_1port_device, &edgeport_2port_device, NULL
2713};
2714
68e24113 2715module_usb_serial_driver(serial_drivers, id_table_combined);
1da177e4 2716
1da177e4
LT		 2717MODULE_AUTHOR(DRIVER_AUTHOR);
2718MODULE_DESCRIPTION(DRIVER_DESC);
2719MODULE_LICENSE("GPL");
d12b219a 2720MODULE_FIRMWARE("edgeport/down3.bin");
1da177e4 2721
1da177e4
LT		 2722module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2723MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2724
2725module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2742fd88
AC		 2726MODULE_PARM_DESC(ignore_cpu_rev,
2727 "Ignore the cpu revision when connecting to a device");
1da177e4 2728
fc4cbd75
MP		 2729module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2730MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
kernel source for telekom puls (alcatel/mediatek)