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Merge branch 'drm-nouveau-fixes-3.8' of git://anongit.freedesktop.org/git/nouveau...
[deliverable/linux.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
1ee0a224
WF		 533 if (!tty)
534 return;
535
1da177e4 536 if (!timeout)
2742fd88 537 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
1da177e4
LT		 538
539 /* wait for data to drain from the buffer */
540 spin_lock_irqsave(&port->ep_lock, flags);
541 init_waitqueue_entry(&wait, current);
542 add_wait_queue(&tty->write_wait, &wait);
543 for (;;) {
544 set_current_state(TASK_INTERRUPTIBLE);
d733cec1 545 if (kfifo_len(&port->write_fifo) == 0
1da177e4 546 || timeout == 0 || signal_pending(current)
af581059 547 || serial->disconnected)
2742fd88 548 /* disconnect */
1da177e4
LT		 549 break;
550 spin_unlock_irqrestore(&port->ep_lock, flags);
551 timeout = schedule_timeout(timeout);
552 spin_lock_irqsave(&port->ep_lock, flags);
553 }
554 set_current_state(TASK_RUNNING);
555 remove_wait_queue(&tty->write_wait, &wait);
556 if (flush)
d733cec1 557 kfifo_reset_out(&port->write_fifo);
1da177e4 558 spin_unlock_irqrestore(&port->ep_lock, flags);
4a90f09b 559 tty_kref_put(tty);
1da177e4
LT		 560
561 /* wait for data to drain from the device */
562 timeout += jiffies;
563 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
af581059 564 && !serial->disconnected) {
2742fd88
AC		 565 /* not disconnected */
566 if (!tx_active(port))
1da177e4
LT		 567 break;
568 msleep(10);
569 }
570
571 /* disconnected */
af581059 572 if (serial->disconnected)
1da177e4
LT		 573 return;
574
575 /* wait one more character time, based on baud rate */
2742fd88
AC		 576 /* (tx_active doesn't seem to wait for the last byte) */
577 baud_rate = port->baud_rate;
578 if (baud_rate == 0)
1da177e4 579 baud_rate = 50;
dfa5ec79 580 msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
1da177e4
LT		 581}
582
2742fd88 583static int choose_config(struct usb_device *dev)
1da177e4 584{
2742fd88
AC		 585 /*
586 * There may be multiple configurations on this device, in which case
587 * we would need to read and parse all of them to find out which one
588 * we want. However, we just support one config at this point,
589 * configuration # 1, which is Config Descriptor 0.
590 */
1da177e4 591
67e6da70
GKH		 592 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
593 __func__, dev->config->desc.bNumInterfaces);
594 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
595 __func__, dev->config->desc.bMaxPower * 2);
1da177e4
LT		 596
597 if (dev->config->desc.bNumInterfaces != 1) {
67e6da70 598 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
1da177e4
LT		 599 return -ENODEV;
600 }
601
602 return 0;
603}
604
2742fd88
AC		 605static int read_rom(struct edgeport_serial *serial,
606 int start_address, int length, __u8 *buffer)
1da177e4
LT		 607{
608 int status;
609
610 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
2742fd88 611 status = read_download_mem(serial->serial->dev,
1da177e4
LT		 612 start_address,
613 length,
614 serial->TI_I2C_Type,
615 buffer);
616 } else {
2742fd88
AC		 617 status = read_boot_mem(serial, start_address, length,
618 buffer);
1da177e4 619 }
1da177e4
LT		 620 return status;
621}
622
2742fd88
AC		 623static int write_rom(struct edgeport_serial *serial, int start_address,
624 int length, __u8 *buffer)
1da177e4
LT		 625{
626 if (serial->product_info.TiMode == TI_MODE_BOOT)
2742fd88
AC		 627 return write_boot_mem(serial, start_address, length,
628 buffer);
1da177e4
LT		 629
630 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
2742fd88
AC		 631 return write_i2c_mem(serial, start_address, length,
632 serial->TI_I2C_Type, buffer);
1da177e4
LT		 633 return -EINVAL;
634}
635
636
637
638/* Read a descriptor header from I2C based on type */
2742fd88
AC		 639static int get_descriptor_addr(struct edgeport_serial *serial,
640 int desc_type, struct ti_i2c_desc *rom_desc)
1da177e4
LT		 641{
642 int start_address;
643 int status;
644
645 /* Search for requested descriptor in I2C */
646 start_address = 2;
647 do {
2742fd88 648 status = read_rom(serial,
1da177e4
LT		 649 start_address,
650 sizeof(struct ti_i2c_desc),
2742fd88 651 (__u8 *)rom_desc);
1da177e4
LT		 652 if (status)
653 return 0;
654
655 if (rom_desc->Type == desc_type)
656 return start_address;
657
2742fd88
AC		 658 start_address = start_address + sizeof(struct ti_i2c_desc)
659 + rom_desc->Size;
1da177e4
LT		 660
661 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
2742fd88 662
1da177e4
LT		 663 return 0;
664}
665
666/* Validate descriptor checksum */
2742fd88 667static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
1da177e4
LT		 668{
669 __u16 i;
670 __u8 cs = 0;
671
2742fd88 672 for (i = 0; i < rom_desc->Size; i++)
1da177e4 673 cs = (__u8)(cs + buffer[i]);
2742fd88 674
1da177e4 675 if (cs != rom_desc->CheckSum) {
67e6da70 676 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
1da177e4
LT		 677 return -EINVAL;
678 }
679 return 0;
680}
681
682/* Make sure that the I2C image is good */
2742fd88 683static int check_i2c_image(struct edgeport_serial *serial)
1da177e4
LT		 684{
685 struct device *dev = &serial->serial->dev->dev;
686 int status = 0;
687 struct ti_i2c_desc *rom_desc;
688 int start_address = 2;
689 __u8 *buffer;
690 __u16 ttype;
691
2742fd88 692 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1da177e4 693 if (!rom_desc) {
2742fd88 694 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 695 return -ENOMEM;
696 }
2742fd88 697 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
1da177e4 698 if (!buffer) {
2742fd88
AC		 699 dev_err(dev, "%s - out of memory when allocating buffer\n",
700 __func__);
701 kfree(rom_desc);
1da177e4
LT		 702 return -ENOMEM;
703 }
704
2742fd88
AC		 705 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
706 status = read_rom(serial, 0, 1, buffer);
1da177e4 707 if (status)
2742fd88 708 goto out;
1da177e4
LT		 709
710 if (*buffer != UMP5152 && *buffer != UMP3410) {
2742fd88 711 dev_err(dev, "%s - invalid buffer signature\n", __func__);
1da177e4 712 status = -ENODEV;
2742fd88 713 goto out;
1da177e4
LT		 714 }
715
716 do {
2742fd88
AC		 717 /* Validate the I2C */
718 status = read_rom(serial,
1da177e4
LT		 719 start_address,
720 sizeof(struct ti_i2c_desc),
721 (__u8 *)rom_desc);
722 if (status)
723 break;
724
2742fd88
AC		 725 if ((start_address + sizeof(struct ti_i2c_desc) +
726 rom_desc->Size) > TI_MAX_I2C_SIZE) {
1da177e4 727 status = -ENODEV;
67e6da70 728 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
1da177e4
LT		 729 break;
730 }
731
67e6da70 732 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
1da177e4 733
2742fd88 734 /* Skip type 2 record */
1da177e4 735 ttype = rom_desc->Type & 0x0f;
2742fd88
AC		 736 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
737 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
738 /* Read the descriptor data */
739 status = read_rom(serial, start_address +
740 sizeof(struct ti_i2c_desc),
741 rom_desc->Size, buffer);
1da177e4
LT		 742 if (status)
743 break;
744
2742fd88 745 status = valid_csum(rom_desc, buffer);
1da177e4
LT		 746 if (status)
747 break;
748 }
2742fd88
AC		 749 start_address = start_address + sizeof(struct ti_i2c_desc) +
750 rom_desc->Size;
1da177e4 751
2742fd88
AC		 752 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
753 (start_address < TI_MAX_I2C_SIZE));
1da177e4 754
2742fd88
AC		 755 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
756 (start_address > TI_MAX_I2C_SIZE))
1da177e4
LT		 757 status = -ENODEV;
758
2742fd88
AC		 759out:
760 kfree(buffer);
761 kfree(rom_desc);
1da177e4
LT		 762 return status;
763}
764
2742fd88 765static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
1da177e4
LT		 766{
767 int status;
768 int start_address;
769 struct ti_i2c_desc *rom_desc;
770 struct edge_ti_manuf_descriptor *desc;
67e6da70 771 struct device *dev = &serial->serial->dev->dev;
1da177e4 772
2742fd88 773 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1da177e4 774 if (!rom_desc) {
67e6da70 775 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 776 return -ENOMEM;
777 }
2742fd88
AC		 778 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
779 rom_desc);
1da177e4
LT		 780
781 if (!start_address) {
67e6da70 782 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
1da177e4
LT		 783 status = -ENODEV;
784 goto exit;
785 }
786
2742fd88
AC		 787 /* Read the descriptor data */
788 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
789 rom_desc->Size, buffer);
1da177e4
LT		 790 if (status)
791 goto exit;
2742fd88
AC		 792
793 status = valid_csum(rom_desc, buffer);
794
1da177e4 795 desc = (struct edge_ti_manuf_descriptor *)buffer;
67e6da70
GKH		 796 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
797 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
798 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
799 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
800 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
801 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
1da177e4
LT		 802
803exit:
2742fd88 804 kfree(rom_desc);
1da177e4
LT		 805 return status;
806}
807
808/* Build firmware header used for firmware update */
2742fd88 809static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
1da177e4
LT		 810{
811 __u8 *buffer;
812 int buffer_size;
813 int i;
d12b219a 814 int err;
1da177e4
LT		 815 __u8 cs = 0;
816 struct ti_i2c_desc *i2c_header;
817 struct ti_i2c_image_header *img_header;
818 struct ti_i2c_firmware_rec *firmware_rec;
d12b219a
JS		 819 const struct firmware *fw;
820 const char *fw_name = "edgeport/down3.bin";
1da177e4 821
2742fd88
AC		 822 /* In order to update the I2C firmware we must change the type 2 record
823 * to type 0xF2. This will force the UMP to come up in Boot Mode.
824 * Then while in boot mode, the driver will download the latest
825 * firmware (padded to 15.5k) into the UMP ram. And finally when the
826 * device comes back up in download mode the driver will cause the new
827 * firmware to be copied from the UMP Ram to I2C and the firmware will
828 * update the record type from 0xf2 to 0x02.
829 */
830
831 /* Allocate a 15.5k buffer + 2 bytes for version number
832 * (Firmware Record) */
833 buffer_size = (((1024 * 16) - 512 ) +
834 sizeof(struct ti_i2c_firmware_rec));
835
836 buffer = kmalloc(buffer_size, GFP_KERNEL);
1da177e4 837 if (!buffer) {
2742fd88 838 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 839 return -ENOMEM;
840 }
2742fd88 841
1da177e4 842 // Set entire image of 0xffs
2742fd88 843 memset(buffer, 0xff, buffer_size);
1da177e4 844
d12b219a
JS		 845 err = request_firmware(&fw, fw_name, dev);
846 if (err) {
d9bb03dc
GKH		 847 dev_err(dev, "Failed to load image \"%s\" err %d\n",
848 fw_name, err);
d12b219a
JS		 849 kfree(buffer);
850 return err;
851 }
852
853 /* Save Download Version Number */
854 OperationalMajorVersion = fw->data[0];
855 OperationalMinorVersion = fw->data[1];
856 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
857
2742fd88 858 /* Copy version number into firmware record */
1da177e4
LT		 859 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
860
d12b219a
JS		 861 firmware_rec->Ver_Major = OperationalMajorVersion;
862 firmware_rec->Ver_Minor = OperationalMinorVersion;
1da177e4 863
2742fd88 864 /* Pointer to fw_down memory image */
d12b219a 865 img_header = (struct ti_i2c_image_header *)&fw->data[4];
1da177e4 866
2742fd88 867 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
d12b219a 868 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
1da177e4
LT		 869 le16_to_cpu(img_header->Length));
870
d12b219a
JS		 871 release_firmware(fw);
872
1da177e4
LT		 873 for (i=0; i < buffer_size; i++) {
874 cs = (__u8)(cs + buffer[i]);
875 }
876
2742fd88 877 kfree(buffer);
1da177e4 878
2742fd88 879 /* Build new header */
1da177e4
LT		 880 i2c_header = (struct ti_i2c_desc *)header;
881 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
2742fd88 882
1da177e4
LT		 883 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
884 i2c_header->Size = (__u16)buffer_size;
885 i2c_header->CheckSum = cs;
d12b219a
JS		 886 firmware_rec->Ver_Major = OperationalMajorVersion;
887 firmware_rec->Ver_Minor = OperationalMinorVersion;
1da177e4
LT		 888
889 return 0;
890}
891
892/* Try to figure out what type of I2c we have */
2742fd88 893static int i2c_type_bootmode(struct edgeport_serial *serial)
1da177e4 894{
67e6da70 895 struct device *dev = &serial->serial->dev->dev;
1da177e4 896 int status;
e9305d2f
JH		 897 u8 *data;
898
899 data = kmalloc(1, GFP_KERNEL);
900 if (!data) {
67e6da70 901 dev_err(dev, "%s - out of memory\n", __func__);
e9305d2f
JH		 902 return -ENOMEM;
903 }
2742fd88
AC		 904
905 /* Try to read type 2 */
906 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
e9305d2f 907 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
1da177e4 908 if (status)
67e6da70 909 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
1da177e4 910 else
67e6da70 911 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
e9305d2f 912 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
67e6da70 913 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
1da177e4 914 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
e9305d2f 915 goto out;
1da177e4
LT		 916 }
917
2742fd88
AC		 918 /* Try to read type 3 */
919 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
e9305d2f 920 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
1da177e4 921 if (status)
67e6da70 922 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
1da177e4 923 else
67e6da70 924 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
e9305d2f 925 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
67e6da70 926 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
1da177e4 927 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
e9305d2f 928 goto out;
1da177e4
LT		 929 }
930
67e6da70 931 dev_dbg(dev, "%s - Unknown\n", __func__);
1da177e4 932 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
e9305d2f
JH		 933 status = -ENODEV;
934out:
935 kfree(data);
936 return status;
1da177e4
LT		 937}
938
2742fd88
AC		 939static int bulk_xfer(struct usb_serial *serial, void *buffer,
940 int length, int *num_sent)
1da177e4
LT		 941{
942 int status;
943
2742fd88
AC		 944 status = usb_bulk_msg(serial->dev,
945 usb_sndbulkpipe(serial->dev,
946 serial->port[0]->bulk_out_endpointAddress),
947 buffer, length, num_sent, 1000);
1da177e4
LT		 948 return status;
949}
950
951/* Download given firmware image to the device (IN BOOT MODE) */
2742fd88
AC		 952static int download_code(struct edgeport_serial *serial, __u8 *image,
953 int image_length)
1da177e4
LT		 954{
955 int status = 0;
956 int pos;
957 int transfer;
958 int done;
959
2742fd88 960 /* Transfer firmware image */
1da177e4 961 for (pos = 0; pos < image_length; ) {
2742fd88 962 /* Read the next buffer from file */
1da177e4
LT		 963 transfer = image_length - pos;
964 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
965 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
966
2742fd88
AC		 967 /* Transfer data */
968 status = bulk_xfer(serial->serial, &image[pos],
969 transfer, &done);
1da177e4
LT		 970 if (status)
971 break;
2742fd88 972 /* Advance buffer pointer */
1da177e4
LT		 973 pos += done;
974 }
975
976 return status;
977}
978
2742fd88
AC		 979/* FIXME!!! */
980static int config_boot_dev(struct usb_device *dev)
1da177e4
LT		 981{
982 return 0;
983}
984
2742fd88
AC		 985static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
986{
987 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
988}
989
1da177e4
LT		 990/**
991 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
2742fd88 992 *
1da177e4
LT		 993 * This routine downloads the main operating code into the TI5052, using the
994 * boot code already burned into E2PROM or ROM.
995 */
2742fd88 996static int download_fw(struct edgeport_serial *serial)
1da177e4
LT		 997{
998 struct device *dev = &serial->serial->dev->dev;
999 int status = 0;
1000 int start_address;
1001 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1002 struct usb_interface_descriptor *interface;
1003 int download_cur_ver;
1004 int download_new_ver;
1005
1006 /* This routine is entered by both the BOOT mode and the Download mode
1007 * We can determine which code is running by the reading the config
1008 * descriptor and if we have only one bulk pipe it is in boot mode
1009 */
1010 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1011
1012 /* Default to type 2 i2c */
1013 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1014
2742fd88 1015 status = choose_config(serial->serial->dev);
1da177e4
LT		 1016 if (status)
1017 return status;
1018
1019 interface = &serial->serial->interface->cur_altsetting->desc;
1020 if (!interface) {
2742fd88 1021 dev_err(dev, "%s - no interface set, error!\n", __func__);
1da177e4
LT		 1022 return -ENODEV;
1023 }
1024
2742fd88
AC		 1025 /*
1026 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1027 * if we have more than one endpoint we are definitely in download
1028 * mode
1029 */
1da177e4
LT		 1030 if (interface->bNumEndpoints > 1)
1031 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1032 else
2742fd88 1033 /* Otherwise we will remain in configuring mode */
1da177e4
LT		 1034 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1035
1da177e4
LT		 1036 /********************************************************************/
1037 /* Download Mode */
1038 /********************************************************************/
1039 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1040 struct ti_i2c_desc *rom_desc;
1041
67e6da70 1042 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1da177e4 1043
2742fd88 1044 status = check_i2c_image(serial);
1da177e4 1045 if (status) {
67e6da70 1046 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1da177e4
LT		 1047 return status;
1048 }
2742fd88 1049
1da177e4
LT		 1050 /* Validate Hardware version number
1051 * Read Manufacturing Descriptor from TI Based Edgeport
1052 */
2742fd88 1053 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1da177e4 1054 if (!ti_manuf_desc) {
2742fd88 1055 dev_err(dev, "%s - out of memory.\n", __func__);
1da177e4
LT		 1056 return -ENOMEM;
1057 }
2742fd88 1058 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1da177e4 1059 if (status) {
2742fd88 1060 kfree(ti_manuf_desc);
1da177e4
LT		 1061 return status;
1062 }
1063
2742fd88
AC		 1064 /* Check version number of ION descriptor */
1065 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
67e6da70 1066 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
2742fd88
AC		 1067 __func__, ti_cpu_rev(ti_manuf_desc));
1068 kfree(ti_manuf_desc);
1069 return -EINVAL;
1070 }
1da177e4 1071
2742fd88 1072 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1da177e4 1073 if (!rom_desc) {
2742fd88
AC		 1074 dev_err(dev, "%s - out of memory.\n", __func__);
1075 kfree(ti_manuf_desc);
1da177e4
LT		 1076 return -ENOMEM;
1077 }
1078
2742fd88
AC		 1079 /* Search for type 2 record (firmware record) */
1080 start_address = get_descriptor_addr(serial,
1081 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1082 if (start_address != 0) {
1da177e4 1083 struct ti_i2c_firmware_rec *firmware_version;
e9305d2f 1084 u8 *record;
1da177e4 1085
67e6da70 1086 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1da177e4 1087
2742fd88
AC		 1088 firmware_version = kmalloc(sizeof(*firmware_version),
1089 GFP_KERNEL);
1da177e4 1090 if (!firmware_version) {
2742fd88
AC		 1091 dev_err(dev, "%s - out of memory.\n", __func__);
1092 kfree(rom_desc);
1093 kfree(ti_manuf_desc);
1da177e4
LT		 1094 return -ENOMEM;
1095 }
1096
2742fd88
AC		 1097 /* Validate version number
1098 * Read the descriptor data
1099 */
1100 status = read_rom(serial, start_address +
1101 sizeof(struct ti_i2c_desc),
1da177e4
LT		 1102 sizeof(struct ti_i2c_firmware_rec),
1103 (__u8 *)firmware_version);
1104 if (status) {
2742fd88
AC		 1105 kfree(firmware_version);
1106 kfree(rom_desc);
1107 kfree(ti_manuf_desc);
1da177e4
LT		 1108 return status;
1109 }
1110
2742fd88
AC		 1111 /* Check version number of download with current
1112 version in I2c */
1113 download_cur_ver = (firmware_version->Ver_Major << 8) +
1da177e4 1114 (firmware_version->Ver_Minor);
d12b219a
JS		 1115 download_new_ver = (OperationalMajorVersion << 8) +
1116 (OperationalMinorVersion);
1da177e4 1117
67e6da70
GKH		 1118 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1119 __func__, firmware_version->Ver_Major,
1120 firmware_version->Ver_Minor,
1121 OperationalMajorVersion,
1122 OperationalMinorVersion);
1da177e4 1123
2742fd88
AC		 1124 /* Check if we have an old version in the I2C and
1125 update if necessary */
0827a9ff 1126 if (download_cur_ver < download_new_ver) {
67e6da70
GKH		 1127 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1128 __func__,
1129 firmware_version->Ver_Major,
1130 firmware_version->Ver_Minor,
1131 OperationalMajorVersion,
1132 OperationalMinorVersion);
2742fd88 1133
e9305d2f
JH		 1134 record = kmalloc(1, GFP_KERNEL);
1135 if (!record) {
1136 dev_err(dev, "%s - out of memory.\n",
1137 __func__);
1138 kfree(firmware_version);
1139 kfree(rom_desc);
1140 kfree(ti_manuf_desc);
1141 return -ENOMEM;
1142 }
2742fd88
AC		 1143 /* In order to update the I2C firmware we must
1144 * change the type 2 record to type 0xF2. This
1145 * will force the UMP to come up in Boot Mode.
1146 * Then while in boot mode, the driver will
1147 * download the latest firmware (padded to
1148 * 15.5k) into the UMP ram. Finally when the
1149 * device comes back up in download mode the
1150 * driver will cause the new firmware to be
1151 * copied from the UMP Ram to I2C and the
1152 * firmware will update the record type from
1153 * 0xf2 to 0x02.
1154 */
e9305d2f 1155 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1da177e4 1156
2742fd88
AC		 1157 /* Change the I2C Firmware record type to
1158 0xf2 to trigger an update */
1159 status = write_rom(serial, start_address,
e9305d2f 1160 sizeof(*record), record);
1da177e4 1161 if (status) {
e9305d2f 1162 kfree(record);
2742fd88
AC		 1163 kfree(firmware_version);
1164 kfree(rom_desc);
1165 kfree(ti_manuf_desc);
1da177e4
LT		 1166 return status;
1167 }
1168
2742fd88
AC		 1169 /* verify the write -- must do this in order
1170 * for write to complete before we do the
1171 * hardware reset
1172 */
1173 status = read_rom(serial,
1da177e4 1174 start_address,
e9305d2f
JH		 1175 sizeof(*record),
1176 record);
1da177e4 1177 if (status) {
e9305d2f 1178 kfree(record);
2742fd88
AC		 1179 kfree(firmware_version);
1180 kfree(rom_desc);
1181 kfree(ti_manuf_desc);
1da177e4
LT		 1182 return status;
1183 }
1184
e9305d2f 1185 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
67e6da70 1186 dev_err(dev, "%s - error resetting device\n", __func__);
e9305d2f 1187 kfree(record);
2742fd88
AC		 1188 kfree(firmware_version);
1189 kfree(rom_desc);
1190 kfree(ti_manuf_desc);
1da177e4
LT		 1191 return -ENODEV;
1192 }
1193
67e6da70 1194 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1da177e4 1195
2742fd88
AC		 1196 /* Reset UMP -- Back to BOOT MODE */
1197 status = ti_vsend_sync(serial->serial->dev,
1198 UMPC_HARDWARE_RESET,
1199 0, 0, NULL, 0);
1da177e4 1200
67e6da70 1201 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1da177e4
LT		 1202
1203 /* return an error on purpose. */
e9305d2f 1204 kfree(record);
2742fd88
AC		 1205 kfree(firmware_version);
1206 kfree(rom_desc);
1207 kfree(ti_manuf_desc);
1da177e4
LT		 1208 return -ENODEV;
1209 }
2742fd88 1210 kfree(firmware_version);
1da177e4 1211 }
2742fd88
AC		 1212 /* Search for type 0xF2 record (firmware blank record) */
1213 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1214#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
1215 sizeof(struct ti_i2c_firmware_rec))
1da177e4
LT		 1216 __u8 *header;
1217 __u8 *vheader;
1218
2742fd88 1219 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1da177e4 1220 if (!header) {
2742fd88
AC		 1221 dev_err(dev, "%s - out of memory.\n", __func__);
1222 kfree(rom_desc);
1223 kfree(ti_manuf_desc);
1da177e4
LT		 1224 return -ENOMEM;
1225 }
2742fd88
AC		 1226
1227 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1da177e4 1228 if (!vheader) {
2742fd88
AC		 1229 dev_err(dev, "%s - out of memory.\n", __func__);
1230 kfree(header);
1231 kfree(rom_desc);
1232 kfree(ti_manuf_desc);
1da177e4
LT		 1233 return -ENOMEM;
1234 }
2742fd88 1235
67e6da70 1236 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
2742fd88
AC		 1237
1238 /*
1239 * In order to update the I2C firmware we must change
1240 * the type 2 record to type 0xF2. This will force the
1241 * UMP to come up in Boot Mode. Then while in boot
1242 * mode, the driver will download the latest firmware
1243 * (padded to 15.5k) into the UMP ram. Finally when the
1244 * device comes back up in download mode the driver
1245 * will cause the new firmware to be copied from the
1246 * UMP Ram to I2C and the firmware will update the
1247 * record type from 0xf2 to 0x02.
1248 */
1249 status = build_i2c_fw_hdr(header, dev);
1da177e4 1250 if (status) {
2742fd88
AC		 1251 kfree(vheader);
1252 kfree(header);
1253 kfree(rom_desc);
1254 kfree(ti_manuf_desc);
fd6e5bbb 1255 return -EINVAL;
1da177e4
LT		 1256 }
1257
2742fd88
AC		 1258 /* Update I2C with type 0xf2 record with correct
1259 size and checksum */
1260 status = write_rom(serial,
1da177e4
LT		 1261 start_address,
1262 HEADER_SIZE,
1263 header);
1264 if (status) {
2742fd88
AC		 1265 kfree(vheader);
1266 kfree(header);
1267 kfree(rom_desc);
1268 kfree(ti_manuf_desc);
9800eb33 1269 return -EINVAL;
1da177e4
LT		 1270 }
1271
2742fd88
AC		 1272 /* verify the write -- must do this in order for
1273 write to complete before we do the hardware reset */
1274 status = read_rom(serial, start_address,
1275 HEADER_SIZE, vheader);
1da177e4
LT		 1276
1277 if (status) {
67e6da70 1278 dev_dbg(dev, "%s - can't read header back\n", __func__);
2742fd88
AC		 1279 kfree(vheader);
1280 kfree(header);
1281 kfree(rom_desc);
1282 kfree(ti_manuf_desc);
1da177e4
LT		 1283 return status;
1284 }
1285 if (memcmp(vheader, header, HEADER_SIZE)) {
67e6da70 1286 dev_dbg(dev, "%s - write download record failed\n", __func__);
2742fd88
AC		 1287 kfree(vheader);
1288 kfree(header);
1289 kfree(rom_desc);
1290 kfree(ti_manuf_desc);
1e29709e 1291 return -EINVAL;
1da177e4
LT		 1292 }
1293
2742fd88
AC		 1294 kfree(vheader);
1295 kfree(header);
1da177e4 1296
67e6da70 1297 dev_dbg(dev, "%s - Start firmware update\n", __func__);
1da177e4 1298
2742fd88
AC		 1299 /* Tell firmware to copy download image into I2C */
1300 status = ti_vsend_sync(serial->serial->dev,
1301 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1da177e4 1302
67e6da70 1303 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1da177e4 1304 if (status) {
2742fd88
AC		 1305 dev_err(dev,
1306 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1307 __func__);
1308 kfree(rom_desc);
1309 kfree(ti_manuf_desc);
1da177e4
LT		 1310 return status;
1311 }
1312 }
1313
1314 // The device is running the download code
2742fd88
AC		 1315 kfree(rom_desc);
1316 kfree(ti_manuf_desc);
1da177e4
LT		 1317 return 0;
1318 }
1319
1320 /********************************************************************/
1321 /* Boot Mode */
1322 /********************************************************************/
67e6da70 1323 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1da177e4 1324
2742fd88
AC		 1325 /* Configure the TI device so we can use the BULK pipes for download */
1326 status = config_boot_dev(serial->serial->dev);
1da177e4
LT		 1327 if (status)
1328 return status;
1329
2742fd88
AC		 1330 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1331 != USB_VENDOR_ID_ION) {
67e6da70
GKH		 1332 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1333 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1da177e4 1334 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
2742fd88 1335 goto stayinbootmode;
1da177e4
LT		 1336 }
1337
2742fd88
AC		 1338 /* We have an ION device (I2c Must be programmed)
1339 Determine I2C image type */
1340 if (i2c_type_bootmode(serial))
1341 goto stayinbootmode;
1da177e4 1342
2742fd88
AC		 1343 /* Check for ION Vendor ID and that the I2C is valid */
1344 if (!check_i2c_image(serial)) {
1da177e4
LT		 1345 struct ti_i2c_image_header *header;
1346 int i;
1347 __u8 cs = 0;
1348 __u8 *buffer;
1349 int buffer_size;
d12b219a
JS		 1350 int err;
1351 const struct firmware *fw;
1352 const char *fw_name = "edgeport/down3.bin";
1da177e4
LT		 1353
1354 /* Validate Hardware version number
1355 * Read Manufacturing Descriptor from TI Based Edgeport
1356 */
2742fd88 1357 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1da177e4 1358 if (!ti_manuf_desc) {
2742fd88 1359 dev_err(dev, "%s - out of memory.\n", __func__);
1da177e4
LT		 1360 return -ENOMEM;
1361 }
2742fd88 1362 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1da177e4 1363 if (status) {
2742fd88
AC		 1364 kfree(ti_manuf_desc);
1365 goto stayinbootmode;
1da177e4
LT		 1366 }
1367
2742fd88
AC		 1368 /* Check for version 2 */
1369 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
67e6da70
GKH		 1370 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1371 __func__, ti_cpu_rev(ti_manuf_desc));
2742fd88
AC		 1372 kfree(ti_manuf_desc);
1373 goto stayinbootmode;
1da177e4
LT		 1374 }
1375
2742fd88 1376 kfree(ti_manuf_desc);
1da177e4 1377
1da177e4 1378 /*
2742fd88
AC		 1379 * In order to update the I2C firmware we must change the type
1380 * 2 record to type 0xF2. This will force the UMP to come up
1381 * in Boot Mode. Then while in boot mode, the driver will
1382 * download the latest firmware (padded to 15.5k) into the
1383 * UMP ram. Finally when the device comes back up in download
1384 * mode the driver will cause the new firmware to be copied
1385 * from the UMP Ram to I2C and the firmware will update the
1386 * record type from 0xf2 to 0x02.
1387 *
1da177e4
LT		 1388 * Do we really have to copy the whole firmware image,
1389 * or could we do this in place!
1390 */
1391
2742fd88
AC		 1392 /* Allocate a 15.5k buffer + 3 byte header */
1393 buffer_size = (((1024 * 16) - 512) +
1394 sizeof(struct ti_i2c_image_header));
1395 buffer = kmalloc(buffer_size, GFP_KERNEL);
1da177e4 1396 if (!buffer) {
2742fd88 1397 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 1398 return -ENOMEM;
1399 }
2742fd88
AC		 1400
1401 /* Initialize the buffer to 0xff (pad the buffer) */
1402 memset(buffer, 0xff, buffer_size);
1da177e4 1403
d12b219a
JS		 1404 err = request_firmware(&fw, fw_name, dev);
1405 if (err) {
d9bb03dc
GKH		 1406 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1407 fw_name, err);
d12b219a
JS		 1408 kfree(buffer);
1409 return err;
1410 }
1411 memcpy(buffer, &fw->data[4], fw->size - 4);
1412 release_firmware(fw);
1da177e4 1413
2742fd88
AC		 1414 for (i = sizeof(struct ti_i2c_image_header);
1415 i < buffer_size; i++) {
1da177e4
LT		 1416 cs = (__u8)(cs + buffer[i]);
1417 }
2742fd88 1418
1da177e4 1419 header = (struct ti_i2c_image_header *)buffer;
2742fd88
AC		 1420
1421 /* update length and checksum after padding */
1422 header->Length = cpu_to_le16((__u16)(buffer_size -
1423 sizeof(struct ti_i2c_image_header)));
1da177e4
LT		 1424 header->CheckSum = cs;
1425
2742fd88 1426 /* Download the operational code */
67e6da70 1427 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
2742fd88 1428 status = download_code(serial, buffer, buffer_size);
1da177e4 1429
2742fd88 1430 kfree(buffer);
1da177e4
LT		 1431
1432 if (status) {
67e6da70 1433 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1da177e4
LT		 1434 return status;
1435 }
1436
2742fd88 1437 /* Device will reboot */
1da177e4
LT		 1438 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1439
67e6da70 1440 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1da177e4
LT		 1441
1442 /* return an error on purpose */
1443 return -ENODEV;
1444 }
1445
2742fd88
AC		 1446stayinbootmode:
1447 /* Eprom is invalid or blank stay in boot mode */
67e6da70 1448 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1da177e4
LT		 1449 serial->product_info.TiMode = TI_MODE_BOOT;
1450
1451 return 0;
1452}
1453
1454
2742fd88 1455static int ti_do_config(struct edgeport_port *port, int feature, int on)
1da177e4
LT		 1456{
1457 int port_number = port->port->number - port->port->serial->minor;
2742fd88
AC		 1458 on = !!on; /* 1 or 0 not bitmask */
1459 return send_cmd(port->port->serial->dev,
1460 feature, (__u8)(UMPM_UART1_PORT + port_number),
1461 on, NULL, 0);
1da177e4
LT		 1462}
1463
1da177e4 1464
2742fd88 1465static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1da177e4
LT		 1466{
1467 int status = 0;
1468
67e6da70 1469 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1da177e4 1470
2742fd88 1471 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1da177e4
LT		 1472 if (status)
1473 return status;
2742fd88 1474 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1da177e4
LT		 1475 if (status)
1476 return status;
2742fd88 1477 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1da177e4
LT		 1478}
1479
1da177e4 1480/* Convert TI LSR to standard UART flags */
2742fd88 1481static __u8 map_line_status(__u8 ti_lsr)
1da177e4
LT		 1482{
1483 __u8 lsr = 0;
1484
1485#define MAP_FLAG(flagUmp, flagUart) \
1486 if (ti_lsr & flagUmp) \
1487 lsr |= flagUart;
1488
1489 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1490 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1491 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1492 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
2742fd88
AC		 1493 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1494 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
1da177e4
LT		 1495
1496#undef MAP_FLAG
1497
1498 return lsr;
1499}
1500
2742fd88 1501static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1da177e4
LT		 1502{
1503 struct async_icount *icount;
1504 struct tty_struct *tty;
1505
67e6da70 1506 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1da177e4 1507
2742fd88
AC		 1508 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1509 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1da177e4
LT		 1510 icount = &edge_port->icount;
1511
1512 /* update input line counters */
1513 if (msr & EDGEPORT_MSR_DELTA_CTS)
1514 icount->cts++;
1515 if (msr & EDGEPORT_MSR_DELTA_DSR)
1516 icount->dsr++;
1517 if (msr & EDGEPORT_MSR_DELTA_CD)
1518 icount->dcd++;
1519 if (msr & EDGEPORT_MSR_DELTA_RI)
1520 icount->rng++;
2742fd88 1521 wake_up_interruptible(&edge_port->delta_msr_wait);
1da177e4
LT		 1522 }
1523
1524 /* Save the new modem status */
1525 edge_port->shadow_msr = msr & 0xf0;
1526
4a90f09b 1527 tty = tty_port_tty_get(&edge_port->port->port);
1da177e4
LT		 1528 /* handle CTS flow control */
1529 if (tty && C_CRTSCTS(tty)) {
1530 if (msr & EDGEPORT_MSR_CTS) {
1531 tty->hw_stopped = 0;
1532 tty_wakeup(tty);
1533 } else {
1534 tty->hw_stopped = 1;
1535 }
1536 }
4a90f09b 1537 tty_kref_put(tty);
1da177e4
LT		 1538}
1539
2742fd88
AC		 1540static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1541 __u8 lsr, __u8 data)
1da177e4
LT		 1542{
1543 struct async_icount *icount;
2742fd88
AC		 1544 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1545 LSR_FRM_ERR | LSR_BREAK));
4a90f09b 1546 struct tty_struct *tty;
1da177e4 1547
67e6da70 1548 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1da177e4
LT		 1549
1550 edge_port->shadow_lsr = lsr;
1551
2742fd88 1552 if (new_lsr & LSR_BREAK)
1da177e4
LT		 1553 /*
1554 * Parity and Framing errors only count if they
1555 * occur exclusive of a break being received.
1556 */
1557 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1da177e4
LT		 1558
1559 /* Place LSR data byte into Rx buffer */
4a90f09b
AC		 1560 if (lsr_data) {
1561 tty = tty_port_tty_get(&edge_port->port->port);
1562 if (tty) {
1563 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1564 tty_kref_put(tty);
1565 }
1566 }
1da177e4
LT		 1567
1568 /* update input line counters */
1569 icount = &edge_port->icount;
1570 if (new_lsr & LSR_BREAK)
1571 icount->brk++;
1572 if (new_lsr & LSR_OVER_ERR)
1573 icount->overrun++;
1574 if (new_lsr & LSR_PAR_ERR)
1575 icount->parity++;
1576 if (new_lsr & LSR_FRM_ERR)
1577 icount->frame++;
1578}
1579
1580
2742fd88 1581static void edge_interrupt_callback(struct urb *urb)
1da177e4 1582{
cdc97792 1583 struct edgeport_serial *edge_serial = urb->context;
1da177e4
LT		 1584 struct usb_serial_port *port;
1585 struct edgeport_port *edge_port;
67e6da70 1586 struct device *dev;
1da177e4
LT		 1587 unsigned char *data = urb->transfer_buffer;
1588 int length = urb->actual_length;
1589 int port_number;
1590 int function;
ee337c21 1591 int retval;
1da177e4
LT		 1592 __u8 lsr;
1593 __u8 msr;
ee337c21 1594 int status = urb->status;
1da177e4 1595
ee337c21 1596 switch (status) {
1da177e4
LT		 1597 case 0:
1598 /* success */
1599 break;
1600 case -ECONNRESET:
1601 case -ENOENT:
1602 case -ESHUTDOWN:
1603 /* this urb is terminated, clean up */
67e6da70 1604 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
441b62c1 1605 __func__, status);
1da177e4
LT		 1606 return;
1607 default:
ee337c21 1608 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
441b62c1 1609 "%d\n", __func__, status);
1da177e4
LT		 1610 goto exit;
1611 }
1612
1613 if (!length) {
67e6da70 1614 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1da177e4
LT		 1615 goto exit;
1616 }
2742fd88 1617
67e6da70 1618 dev = &edge_serial->serial->dev->dev;
59d33f2f 1619 usb_serial_debug_data(dev, __func__, length, data);
2742fd88 1620
1da177e4 1621 if (length != 2) {
67e6da70 1622 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1da177e4
LT		 1623 goto exit;
1624 }
1625
2742fd88
AC		 1626 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1627 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
67e6da70
GKH		 1628 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1629 port_number, function, data[1]);
1da177e4
LT		 1630 port = edge_serial->serial->port[port_number];
1631 edge_port = usb_get_serial_port_data(port);
1632 if (!edge_port) {
67e6da70 1633 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1da177e4
LT		 1634 return;
1635 }
1636 switch (function) {
1637 case TIUMP_INTERRUPT_CODE_LSR:
2742fd88 1638 lsr = map_line_status(data[1]);
1da177e4 1639 if (lsr & UMP_UART_LSR_DATA_MASK) {
2742fd88
AC		 1640 /* Save the LSR event for bulk read
1641 completion routine */
67e6da70
GKH		 1642 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1643 __func__, port_number, lsr);
1da177e4
LT		 1644 edge_port->lsr_event = 1;
1645 edge_port->lsr_mask = lsr;
1646 } else {
67e6da70
GKH		 1647 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1648 __func__, port_number, lsr);
2742fd88 1649 handle_new_lsr(edge_port, 0, lsr, 0);
1da177e4
LT		 1650 }
1651 break;
1652
2742fd88 1653 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
1da177e4
LT		 1654 /* Copy MSR from UMP */
1655 msr = data[1];
67e6da70
GKH		 1656 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1657 __func__, port_number, msr);
2742fd88 1658 handle_new_msr(edge_port, msr);
1da177e4
LT		 1659 break;
1660
1661 default:
2742fd88
AC		 1662 dev_err(&urb->dev->dev,
1663 "%s - Unknown Interrupt code from UMP %x\n",
1664 __func__, data[1]);
1da177e4 1665 break;
2742fd88 1666
1da177e4
LT		 1667 }
1668
1669exit:
2742fd88 1670 retval = usb_submit_urb(urb, GFP_ATOMIC);
ee337c21 1671 if (retval)
2742fd88
AC		 1672 dev_err(&urb->dev->dev,
1673 "%s - usb_submit_urb failed with result %d\n",
441b62c1 1674 __func__, retval);
1da177e4
LT		 1675}
1676
2742fd88 1677static void edge_bulk_in_callback(struct urb *urb)
1da177e4 1678{
cdc97792 1679 struct edgeport_port *edge_port = urb->context;
67e6da70 1680 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1681 unsigned char *data = urb->transfer_buffer;
1682 struct tty_struct *tty;
ee337c21 1683 int retval = 0;
1da177e4 1684 int port_number;
ee337c21 1685 int status = urb->status;
1da177e4 1686
ee337c21 1687 switch (status) {
1da177e4
LT		 1688 case 0:
1689 /* success */
1690 break;
1691 case -ECONNRESET:
1692 case -ENOENT:
1693 case -ESHUTDOWN:
1694 /* this urb is terminated, clean up */
67e6da70 1695 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1da177e4
LT		 1696 return;
1697 default:
67e6da70 1698 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1da177e4
LT		 1699 }
1700
ee337c21 1701 if (status == -EPIPE)
1da177e4
LT		 1702 goto exit;
1703
ee337c21 1704 if (status) {
2742fd88 1705 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1da177e4
LT		 1706 return;
1707 }
1708
1709 port_number = edge_port->port->number - edge_port->port->serial->minor;
1710
1711 if (edge_port->lsr_event) {
1712 edge_port->lsr_event = 0;
67e6da70
GKH		 1713 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1714 __func__, port_number, edge_port->lsr_mask, *data);
2742fd88 1715 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1da177e4
LT		 1716 /* Adjust buffer length/pointer */
1717 --urb->actual_length;
1718 ++data;
1719 }
1720
4a90f09b 1721 tty = tty_port_tty_get(&edge_port->port->port);
1da177e4 1722 if (tty && urb->actual_length) {
59d33f2f 1723 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
2742fd88 1724 if (edge_port->close_pending)
67e6da70 1725 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
2742fd88
AC		 1726 __func__);
1727 else
67e6da70 1728 edge_tty_recv(dev, tty, data, urb->actual_length);
1da177e4
LT		 1729 edge_port->icount.rx += urb->actual_length;
1730 }
4a90f09b 1731 tty_kref_put(tty);
1da177e4
LT		 1732
1733exit:
1734 /* continue read unless stopped */
1735 spin_lock(&edge_port->ep_lock);
5833041f 1736 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
ee337c21 1737 retval = usb_submit_urb(urb, GFP_ATOMIC);
5833041f 1738 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1da177e4 1739 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
5833041f 1740
1da177e4 1741 spin_unlock(&edge_port->ep_lock);
ee337c21 1742 if (retval)
67e6da70 1743 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1da177e4
LT		 1744}
1745
2742fd88
AC		 1746static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1747 unsigned char *data, int length)
1da177e4 1748{
2742fd88 1749 int queued;
1da177e4 1750
2742fd88
AC		 1751 queued = tty_insert_flip_string(tty, data, length);
1752 if (queued < length)
1753 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1754 __func__, length - queued);
1da177e4
LT		 1755 tty_flip_buffer_push(tty);
1756}
1757
2742fd88 1758static void edge_bulk_out_callback(struct urb *urb)
1da177e4 1759{
cdc97792 1760 struct usb_serial_port *port = urb->context;
1da177e4 1761 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
ee337c21 1762 int status = urb->status;
4a90f09b 1763 struct tty_struct *tty;
1da177e4 1764
1da177e4
LT		 1765 edge_port->ep_write_urb_in_use = 0;
1766
ee337c21 1767 switch (status) {
1da177e4
LT		 1768 case 0:
1769 /* success */
1770 break;
1771 case -ECONNRESET:
1772 case -ENOENT:
1773 case -ESHUTDOWN:
1774 /* this urb is terminated, clean up */
67e6da70 1775 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
441b62c1 1776 __func__, status);
1da177e4
LT		 1777 return;
1778 default:
22a416c4 1779 dev_err_console(port, "%s - nonzero write bulk status "
441b62c1 1780 "received: %d\n", __func__, status);
1da177e4
LT		 1781 }
1782
1783 /* send any buffered data */
4a90f09b
AC		 1784 tty = tty_port_tty_get(&port->port);
1785 edge_send(tty);
1786 tty_kref_put(tty);
1da177e4
LT		 1787}
1788
a509a7e4 1789static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4
LT		 1790{
1791 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1792 struct edgeport_serial *edge_serial;
1793 struct usb_device *dev;
1794 struct urb *urb;
1795 int port_number;
1796 int status;
1797 u16 open_settings;
1798 u8 transaction_timeout;
1799
1da177e4
LT		 1800 if (edge_port == NULL)
1801 return -ENODEV;
1802
1da177e4
LT		 1803 port_number = port->number - port->serial->minor;
1804 switch (port_number) {
2742fd88
AC		 1805 case 0:
1806 edge_port->uart_base = UMPMEM_BASE_UART1;
1807 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1808 break;
1809 case 1:
1810 edge_port->uart_base = UMPMEM_BASE_UART2;
1811 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1812 break;
1813 default:
1814 dev_err(&port->dev, "Unknown port number!!!\n");
1815 return -ENODEV;
1da177e4
LT		 1816 }
1817
67e6da70
GKH		 1818 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1819 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1da177e4
LT		 1820
1821 dev = port->serial->dev;
1822
2742fd88
AC		 1823 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1824 init_waitqueue_head(&edge_port->delta_msr_wait);
1da177e4
LT		 1825
1826 /* turn off loopback */
2742fd88 1827 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1da177e4 1828 if (status) {
2742fd88
AC		 1829 dev_err(&port->dev,
1830 "%s - cannot send clear loopback command, %d\n",
441b62c1 1831 __func__, status);
1da177e4
LT		 1832 return status;
1833 }
2742fd88 1834
1da177e4 1835 /* set up the port settings */
95da310e 1836 if (tty)
adc8d746 1837 edge_set_termios(tty, port, &tty->termios);
1da177e4
LT		 1838
1839 /* open up the port */
1840
1841 /* milliseconds to timeout for DMA transfer */
1842 transaction_timeout = 2;
1843
2742fd88
AC		 1844 edge_port->ump_read_timeout =
1845 max(20, ((transaction_timeout * 3) / 2));
1da177e4 1846
2742fd88
AC		 1847 /* milliseconds to timeout for DMA transfer */
1848 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1849 UMP_PIPE_TRANS_TIMEOUT_ENA |
1da177e4
LT		 1850 (transaction_timeout << 2));
1851
67e6da70 1852 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1da177e4
LT		 1853
1854 /* Tell TI to open and start the port */
2742fd88
AC		 1855 status = send_cmd(dev, UMPC_OPEN_PORT,
1856 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1da177e4 1857 if (status) {
2742fd88
AC		 1858 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1859 __func__, status);
1da177e4
LT		 1860 return status;
1861 }
1862
1863 /* Start the DMA? */
2742fd88
AC		 1864 status = send_cmd(dev, UMPC_START_PORT,
1865 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1da177e4 1866 if (status) {
2742fd88
AC		 1867 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1868 __func__, status);
1da177e4
LT		 1869 return status;
1870 }
1871
1872 /* Clear TX and RX buffers in UMP */
2742fd88 1873 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1da177e4 1874 if (status) {
2742fd88
AC		 1875 dev_err(&port->dev,
1876 "%s - cannot send clear buffers command, %d\n",
1877 __func__, status);
1da177e4
LT		 1878 return status;
1879 }
1880
1881 /* Read Initial MSR */
2742fd88
AC		 1882 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1883 (__u16)(UMPM_UART1_PORT + port_number),
1884 &edge_port->shadow_msr, 1);
1da177e4 1885 if (status) {
2742fd88
AC		 1886 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1887 __func__, status);
1da177e4
LT		 1888 return status;
1889 }
1890
67e6da70 1891 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
2742fd88 1892
1da177e4
LT		 1893 /* Set Initial MCR */
1894 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
67e6da70 1895 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1da177e4
LT		 1896
1897 edge_serial = edge_port->edge_serial;
241ca64f 1898 if (mutex_lock_interruptible(&edge_serial->es_lock))
1da177e4
LT		 1899 return -ERESTARTSYS;
1900 if (edge_serial->num_ports_open == 0) {
2742fd88 1901 /* we are the first port to open, post the interrupt urb */
1da177e4
LT		 1902 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1903 if (!urb) {
2742fd88
AC		 1904 dev_err(&port->dev,
1905 "%s - no interrupt urb present, exiting\n",
1906 __func__);
1da177e4 1907 status = -EINVAL;
241ca64f 1908 goto release_es_lock;
1da177e4 1909 }
1da177e4 1910 urb->context = edge_serial;
2742fd88 1911 status = usb_submit_urb(urb, GFP_KERNEL);
1da177e4 1912 if (status) {
2742fd88
AC		 1913 dev_err(&port->dev,
1914 "%s - usb_submit_urb failed with value %d\n",
1915 __func__, status);
241ca64f 1916 goto release_es_lock;
1da177e4
LT		 1917 }
1918 }
1919
1920 /*
1921 * reset the data toggle on the bulk endpoints to work around bug in
1922 * host controllers where things get out of sync some times
1923 */
2742fd88
AC		 1924 usb_clear_halt(dev, port->write_urb->pipe);
1925 usb_clear_halt(dev, port->read_urb->pipe);
1da177e4
LT		 1926
1927 /* start up our bulk read urb */
1928 urb = port->read_urb;
1929 if (!urb) {
2742fd88
AC		 1930 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1931 __func__);
1da177e4
LT		 1932 status = -EINVAL;
1933 goto unlink_int_urb;
1934 }
1935 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1da177e4 1936 urb->context = edge_port;
2742fd88 1937 status = usb_submit_urb(urb, GFP_KERNEL);
1da177e4 1938 if (status) {
2742fd88
AC		 1939 dev_err(&port->dev,
1940 "%s - read bulk usb_submit_urb failed with value %d\n",
1941 __func__, status);
1da177e4
LT		 1942 goto unlink_int_urb;
1943 }
1944
1945 ++edge_serial->num_ports_open;
1946
241ca64f 1947 goto release_es_lock;
1da177e4
LT		 1948
1949unlink_int_urb:
1950 if (edge_port->edge_serial->num_ports_open == 0)
1951 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
241ca64f
MK		 1952release_es_lock:
1953 mutex_unlock(&edge_serial->es_lock);
1da177e4
LT		 1954 return status;
1955}
1956
335f8514 1957static void edge_close(struct usb_serial_port *port)
1da177e4
LT		 1958{
1959 struct edgeport_serial *edge_serial;
1960 struct edgeport_port *edge_port;
af581059 1961 struct usb_serial *serial = port->serial;
1da177e4 1962 int port_number;
1da177e4 1963
1da177e4
LT		 1964 edge_serial = usb_get_serial_data(port->serial);
1965 edge_port = usb_get_serial_port_data(port);
2742fd88 1966 if (edge_serial == NULL || edge_port == NULL)
1da177e4 1967 return;
2742fd88
AC		 1968
1969 /* The bulkreadcompletion routine will check
1da177e4
LT		 1970 * this flag and dump add read data */
1971 edge_port->close_pending = 1;
1972
1973 /* chase the port close and flush */
2742fd88 1974 chase_port(edge_port, (HZ * closing_wait) / 100, 1);
1da177e4
LT		 1975
1976 usb_kill_urb(port->read_urb);
1977 usb_kill_urb(port->write_urb);
1978 edge_port->ep_write_urb_in_use = 0;
1979
1980 /* assuming we can still talk to the device,
1981 * send a close port command to it */
67e6da70 1982 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1da177e4 1983 port_number = port->number - port->serial->minor;
af581059
JH		 1984
1985 mutex_lock(&serial->disc_mutex);
1986 if (!serial->disconnected) {
1987 send_cmd(serial->dev,
1da177e4
LT		 1988 UMPC_CLOSE_PORT,
1989 (__u8)(UMPM_UART1_PORT + port_number),
1990 0,
1991 NULL,
1992 0);
af581059
JH		 1993 }
1994 mutex_unlock(&serial->disc_mutex);
1995
241ca64f 1996 mutex_lock(&edge_serial->es_lock);
1da177e4
LT		 1997 --edge_port->edge_serial->num_ports_open;
1998 if (edge_port->edge_serial->num_ports_open <= 0) {
1999 /* last port is now closed, let's shut down our interrupt urb */
2000 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2001 edge_port->edge_serial->num_ports_open = 0;
2002 }
241ca64f 2003 mutex_unlock(&edge_serial->es_lock);
1da177e4 2004 edge_port->close_pending = 0;
1da177e4
LT		 2005}
2006
95da310e
AC		 2007static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2008 const unsigned char *data, int count)
1da177e4
LT		 2009{
2010 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4 2011
1da177e4 2012 if (count == 0) {
67e6da70 2013 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1da177e4
LT		 2014 return 0;
2015 }
2016
2017 if (edge_port == NULL)
2018 return -ENODEV;
2019 if (edge_port->close_pending == 1)
2020 return -ENODEV;
2021
d733cec1
JH		 2022 count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2023 &edge_port->ep_lock);
95da310e 2024 edge_send(tty);
1da177e4
LT		 2025
2026 return count;
2027}
2028
95da310e 2029static void edge_send(struct tty_struct *tty)
1da177e4 2030{
95da310e 2031 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2032 int count, result;
2033 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 2034 unsigned long flags;
2035
1da177e4
LT		 2036 spin_lock_irqsave(&edge_port->ep_lock, flags);
2037
2038 if (edge_port->ep_write_urb_in_use) {
2039 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2040 return;
2041 }
2042
d733cec1 2043 count = kfifo_out(&edge_port->write_fifo,
1da177e4
LT		 2044 port->write_urb->transfer_buffer,
2045 port->bulk_out_size);
2046
2047 if (count == 0) {
2048 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2049 return;
2050 }
2051
2052 edge_port->ep_write_urb_in_use = 1;
2053
2054 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2055
59d33f2f 2056 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1da177e4
LT		 2057
2058 /* set up our urb */
fd11961a 2059 port->write_urb->transfer_buffer_length = count;
1da177e4
LT		 2060
2061 /* send the data out the bulk port */
2062 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2063 if (result) {
22a416c4 2064 dev_err_console(port,
2742fd88
AC		 2065 "%s - failed submitting write urb, error %d\n",
2066 __func__, result);
1da177e4 2067 edge_port->ep_write_urb_in_use = 0;
2742fd88
AC		 2068 /* TODO: reschedule edge_send */
2069 } else
1da177e4 2070 edge_port->icount.tx += count;
1da177e4
LT		 2071
2072 /* wakeup any process waiting for writes to complete */
2073 /* there is now more room in the buffer for new writes */
2742fd88 2074 if (tty)
1da177e4 2075 tty_wakeup(tty);
1da177e4
LT		 2076}
2077
95da310e 2078static int edge_write_room(struct tty_struct *tty)
1da177e4 2079{
95da310e 2080 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2081 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2082 int room = 0;
2083 unsigned long flags;
2084
1da177e4 2085 if (edge_port == NULL)
2742fd88 2086 return 0;
1da177e4 2087 if (edge_port->close_pending == 1)
2742fd88 2088 return 0;
1da177e4
LT		 2089
2090 spin_lock_irqsave(&edge_port->ep_lock, flags);
d733cec1 2091 room = kfifo_avail(&edge_port->write_fifo);
1da177e4
LT		 2092 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2093
67e6da70 2094 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1da177e4
LT		 2095 return room;
2096}
2097
95da310e 2098static int edge_chars_in_buffer(struct tty_struct *tty)
1da177e4 2099{
95da310e 2100 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2101 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2102 int chars = 0;
2103 unsigned long flags;
2104
1da177e4 2105 if (edge_port == NULL)
2742fd88 2106 return 0;
1da177e4 2107 if (edge_port->close_pending == 1)
2742fd88 2108 return 0;
1da177e4
LT		 2109
2110 spin_lock_irqsave(&edge_port->ep_lock, flags);
d733cec1 2111 chars = kfifo_len(&edge_port->write_fifo);
1da177e4
LT		 2112 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2113
67e6da70 2114 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
1da177e4
LT		 2115 return chars;
2116}
2117
95da310e 2118static void edge_throttle(struct tty_struct *tty)
1da177e4 2119{
95da310e 2120 struct usb_serial_port *port = tty->driver_data;
1da177e4 2121 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 2122 int status;
2123
1da177e4
LT		 2124 if (edge_port == NULL)
2125 return;
2126
1da177e4
LT		 2127 /* if we are implementing XON/XOFF, send the stop character */
2128 if (I_IXOFF(tty)) {
2129 unsigned char stop_char = STOP_CHAR(tty);
95da310e
AC		 2130 status = edge_write(tty, port, &stop_char, 1);
2131 if (status <= 0) {
2132 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2133 }
1da177e4
LT		 2134 }
2135
2136 /* if we are implementing RTS/CTS, stop reads */
2137 /* and the Edgeport will clear the RTS line */
2138 if (C_CRTSCTS(tty))
2139 stop_read(edge_port);
2140
2141}
2142
95da310e 2143static void edge_unthrottle(struct tty_struct *tty)
1da177e4 2144{
95da310e 2145 struct usb_serial_port *port = tty->driver_data;
1da177e4 2146 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 2147 int status;
2148
1da177e4
LT		 2149 if (edge_port == NULL)
2150 return;
2151
1da177e4
LT		 2152 /* if we are implementing XON/XOFF, send the start character */
2153 if (I_IXOFF(tty)) {
2154 unsigned char start_char = START_CHAR(tty);
95da310e
AC		 2155 status = edge_write(tty, port, &start_char, 1);
2156 if (status <= 0) {
2157 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2158 }
1da177e4 2159 }
1da177e4
LT		 2160 /* if we are implementing RTS/CTS, restart reads */
2161 /* are the Edgeport will assert the RTS line */
2162 if (C_CRTSCTS(tty)) {
2163 status = restart_read(edge_port);
2164 if (status)
2742fd88
AC		 2165 dev_err(&port->dev,
2166 "%s - read bulk usb_submit_urb failed: %d\n",
2167 __func__, status);
1da177e4
LT		 2168 }
2169
2170}
2171
2172static void stop_read(struct edgeport_port *edge_port)
2173{
2174 unsigned long flags;
2175
2176 spin_lock_irqsave(&edge_port->ep_lock, flags);
2177
2178 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2179 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2180 edge_port->shadow_mcr &= ~MCR_RTS;
2181
2182 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2183}
2184
2185static int restart_read(struct edgeport_port *edge_port)
2186{
2187 struct urb *urb;
2188 int status = 0;
2189 unsigned long flags;
2190
2191 spin_lock_irqsave(&edge_port->ep_lock, flags);
2192
2193 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2194 urb = edge_port->port->read_urb;
efdff608 2195 status = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4
LT		 2196 }
2197 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2198 edge_port->shadow_mcr |= MCR_RTS;
2199
2200 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2201
2202 return status;
2203}
2204
95da310e
AC		 2205static void change_port_settings(struct tty_struct *tty,
2206 struct edgeport_port *edge_port, struct ktermios *old_termios)
1da177e4 2207{
67e6da70 2208 struct device *dev = &edge_port->port->dev;
1da177e4 2209 struct ump_uart_config *config;
1da177e4
LT		 2210 int baud;
2211 unsigned cflag;
2212 int status;
2742fd88
AC		 2213 int port_number = edge_port->port->number -
2214 edge_port->port->serial->minor;
1da177e4 2215
67e6da70 2216 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
1da177e4 2217
95da310e 2218 config = kmalloc (sizeof (*config), GFP_KERNEL);
1da177e4 2219 if (!config) {
adc8d746 2220 tty->termios = *old_termios;
67e6da70 2221 dev_err(dev, "%s - out of memory\n", __func__);
1da177e4
LT		 2222 return;
2223 }
2224
adc8d746 2225 cflag = tty->termios.c_cflag;
1da177e4
LT		 2226
2227 config->wFlags = 0;
2228
2229 /* These flags must be set */
2230 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2231 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2232 config->bUartMode = (__u8)(edge_port->bUartMode);
2233
2234 switch (cflag & CSIZE) {
2742fd88
AC		 2235 case CS5:
2236 config->bDataBits = UMP_UART_CHAR5BITS;
67e6da70 2237 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2742fd88
AC		 2238 break;
2239 case CS6:
2240 config->bDataBits = UMP_UART_CHAR6BITS;
67e6da70 2241 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2742fd88
AC		 2242 break;
2243 case CS7:
2244 config->bDataBits = UMP_UART_CHAR7BITS;
67e6da70 2245 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2742fd88
AC		 2246 break;
2247 default:
2248 case CS8:
2249 config->bDataBits = UMP_UART_CHAR8BITS;
67e6da70 2250 dev_dbg(dev, "%s - data bits = 8\n", __func__);
1da177e4
LT		 2251 break;
2252 }
2253
2254 if (cflag & PARENB) {
2255 if (cflag & PARODD) {
2256 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2257 config->bParity = UMP_UART_ODDPARITY;
67e6da70 2258 dev_dbg(dev, "%s - parity = odd\n", __func__);
1da177e4
LT		 2259 } else {
2260 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2261 config->bParity = UMP_UART_EVENPARITY;
67e6da70 2262 dev_dbg(dev, "%s - parity = even\n", __func__);
1da177e4
LT		 2263 }
2264 } else {
2742fd88 2265 config->bParity = UMP_UART_NOPARITY;
67e6da70 2266 dev_dbg(dev, "%s - parity = none\n", __func__);
1da177e4
LT		 2267 }
2268
2269 if (cflag & CSTOPB) {
2270 config->bStopBits = UMP_UART_STOPBIT2;
67e6da70 2271 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
1da177e4
LT		 2272 } else {
2273 config->bStopBits = UMP_UART_STOPBIT1;
67e6da70 2274 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
1da177e4
LT		 2275 }
2276
2277 /* figure out the flow control settings */
2278 if (cflag & CRTSCTS) {
2279 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2280 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
67e6da70 2281 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
1da177e4 2282 } else {
67e6da70 2283 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
1da177e4
LT		 2284 tty->hw_stopped = 0;
2285 restart_read(edge_port);
2286 }
2287
2742fd88
AC		 2288 /* if we are implementing XON/XOFF, set the start and stop
2289 character in the device */
2290 config->cXon = START_CHAR(tty);
2291 config->cXoff = STOP_CHAR(tty);
1da177e4 2292
2742fd88
AC		 2293 /* if we are implementing INBOUND XON/XOFF */
2294 if (I_IXOFF(tty)) {
2295 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
67e6da70
GKH		 2296 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2297 __func__, config->cXon, config->cXoff);
2742fd88 2298 } else
67e6da70 2299 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
1da177e4 2300
2742fd88
AC		 2301 /* if we are implementing OUTBOUND XON/XOFF */
2302 if (I_IXON(tty)) {
2303 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
67e6da70
GKH		 2304 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2305 __func__, config->cXon, config->cXoff);
2742fd88 2306 } else
67e6da70 2307 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
1da177e4 2308
adc8d746 2309 tty->termios.c_cflag &= ~CMSPAR;
d5f5bcd4 2310
1da177e4
LT		 2311 /* Round the baud rate */
2312 baud = tty_get_baud_rate(tty);
2313 if (!baud) {
2314 /* pick a default, any default... */
2315 baud = 9600;
d5f5bcd4
AC		 2316 } else
2317 tty_encode_baud_rate(tty, baud, baud);
2318
1da177e4
LT		 2319 edge_port->baud_rate = baud;
2320 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2321
d5f5bcd4
AC		 2322 /* FIXME: Recompute actual baud from divisor here */
2323
67e6da70 2324 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
1da177e4 2325
67e6da70
GKH		 2326 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2327 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2328 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2329 dev_dbg(dev, "bParity: %d\n", config->bParity);
2330 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2331 dev_dbg(dev, "cXon: %d\n", config->cXon);
2332 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2333 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
1da177e4
LT		 2334
2335 /* move the word values into big endian mode */
2742fd88
AC		 2336 cpu_to_be16s(&config->wFlags);
2337 cpu_to_be16s(&config->wBaudRate);
1da177e4 2338
2742fd88 2339 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
1da177e4 2340 (__u8)(UMPM_UART1_PORT + port_number),
2742fd88
AC		 2341 0, (__u8 *)config, sizeof(*config));
2342 if (status)
67e6da70
GKH		 2343 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2344 __func__, status);
2742fd88 2345 kfree(config);
1da177e4
LT		 2346}
2347
2e0ddd62 2348static void edge_set_termios(struct tty_struct *tty,
95da310e 2349 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4
LT		 2350{
2351 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
95da310e
AC		 2352 unsigned int cflag;
2353
adc8d746 2354 cflag = tty->termios.c_cflag;
1da177e4 2355
67e6da70 2356 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
d9a80746 2357 tty->termios.c_cflag, tty->termios.c_iflag);
67e6da70
GKH		 2358 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2359 old_termios->c_cflag, old_termios->c_iflag);
2360 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
1da177e4
LT		 2361
2362 if (edge_port == NULL)
2363 return;
1da177e4 2364 /* change the port settings to the new ones specified */
95da310e 2365 change_port_settings(tty, edge_port, old_termios);
1da177e4
LT		 2366}
2367
20b9d177 2368static int edge_tiocmset(struct tty_struct *tty,
2742fd88 2369 unsigned int set, unsigned int clear)
1da177e4 2370{
95da310e 2371 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2372 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2373 unsigned int mcr;
3d71fe0b 2374 unsigned long flags;
1da177e4 2375
3d71fe0b 2376 spin_lock_irqsave(&edge_port->ep_lock, flags);
1da177e4
LT		 2377 mcr = edge_port->shadow_mcr;
2378 if (set & TIOCM_RTS)
2379 mcr |= MCR_RTS;
2380 if (set & TIOCM_DTR)
2381 mcr |= MCR_DTR;
2382 if (set & TIOCM_LOOP)
2383 mcr |= MCR_LOOPBACK;
2384
2385 if (clear & TIOCM_RTS)
2386 mcr &= ~MCR_RTS;
2387 if (clear & TIOCM_DTR)
2388 mcr &= ~MCR_DTR;
2389 if (clear & TIOCM_LOOP)
2390 mcr &= ~MCR_LOOPBACK;
2391
2392 edge_port->shadow_mcr = mcr;
3d71fe0b 2393 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1da177e4 2394
2742fd88 2395 restore_mcr(edge_port, mcr);
1da177e4
LT		 2396 return 0;
2397}
2398
60b33c13 2399static int edge_tiocmget(struct tty_struct *tty)
1da177e4 2400{
95da310e 2401 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2402 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2403 unsigned int result = 0;
2404 unsigned int msr;
2405 unsigned int mcr;
3d71fe0b 2406 unsigned long flags;
1da177e4 2407
3d71fe0b
AC		 2408 spin_lock_irqsave(&edge_port->ep_lock, flags);
2409
1da177e4
LT		 2410 msr = edge_port->shadow_msr;
2411 mcr = edge_port->shadow_mcr;
2412 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2413 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2414 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2415 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2416 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2417 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2418
2419
67e6da70 2420 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
3d71fe0b 2421 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1da177e4
LT		 2422
2423 return result;
2424}
2425
0bca1b91
AC		 2426static int edge_get_icount(struct tty_struct *tty,
2427 struct serial_icounter_struct *icount)
2428{
2429 struct usb_serial_port *port = tty->driver_data;
2430 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2431 struct async_icount *ic = &edge_port->icount;
2432
2433 icount->cts = ic->cts;
2434 icount->dsr = ic->dsr;
2435 icount->rng = ic->rng;
2436 icount->dcd = ic->dcd;
2437 icount->tx = ic->tx;
2438 icount->rx = ic->rx;
2439 icount->frame = ic->frame;
2440 icount->parity = ic->parity;
2441 icount->overrun = ic->overrun;
2442 icount->brk = ic->brk;
2443 icount->buf_overrun = ic->buf_overrun;
2444 return 0;
2445}
2446
2742fd88
AC		 2447static int get_serial_info(struct edgeport_port *edge_port,
2448 struct serial_struct __user *retinfo)
1da177e4
LT		 2449{
2450 struct serial_struct tmp;
2451
2452 if (!retinfo)
2453 return -EFAULT;
2454
2455 memset(&tmp, 0, sizeof(tmp));
2456
2457 tmp.type = PORT_16550A;
2458 tmp.line = edge_port->port->serial->minor;
2459 tmp.port = edge_port->port->number;
2460 tmp.irq = 0;
2461 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2462 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2463 tmp.baud_base = 9600;
2464 tmp.close_delay = 5*HZ;
2465 tmp.closing_wait = closing_wait;
1da177e4
LT		 2466
2467 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2468 return -EFAULT;
2469 return 0;
2470}
2471
00a0d0d6 2472static int edge_ioctl(struct tty_struct *tty,
2742fd88 2473 unsigned int cmd, unsigned long arg)
1da177e4 2474{
95da310e 2475 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2476 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2477 struct async_icount cnow;
2478 struct async_icount cprev;
2479
67e6da70 2480 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
1da177e4
LT		 2481
2482 switch (cmd) {
2742fd88 2483 case TIOCGSERIAL:
67e6da70 2484 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2742fd88
AC		 2485 return get_serial_info(edge_port,
2486 (struct serial_struct __user *) arg);
2487 case TIOCMIWAIT:
67e6da70 2488 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2742fd88
AC		 2489 cprev = edge_port->icount;
2490 while (1) {
2491 interruptible_sleep_on(&edge_port->delta_msr_wait);
2492 /* see if a signal did it */
2493 if (signal_pending(current))
2494 return -ERESTARTSYS;
2495 cnow = edge_port->icount;
2496 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2497 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2498 return -EIO; /* no change => error */
2499 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2500 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2501 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2502 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2503 return 0;
1da177e4 2504 }
2742fd88
AC		 2505 cprev = cnow;
2506 }
2507 /* not reached */
2508 break;
1da177e4 2509 }
1da177e4
LT		 2510 return -ENOIOCTLCMD;
2511}
2512
95da310e 2513static void edge_break(struct tty_struct *tty, int break_state)
1da177e4 2514{
95da310e 2515 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 2516 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2517 int status;
2742fd88 2518 int bv = 0; /* Off */
1da177e4 2519
1da177e4 2520 /* chase the port close */
2742fd88 2521 chase_port(edge_port, 0, 0);
1da177e4 2522
95da310e 2523 if (break_state == -1)
2742fd88
AC		 2524 bv = 1; /* On */
2525 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2526 if (status)
67e6da70
GKH		 2527 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2528 __func__, status);
1da177e4
LT		 2529}
2530
2742fd88 2531static int edge_startup(struct usb_serial *serial)
1da177e4
LT		 2532{
2533 struct edgeport_serial *edge_serial;
1da177e4 2534 int status;
1da177e4
LT		 2535
2536 /* create our private serial structure */
80b6ca48 2537 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
1da177e4 2538 if (edge_serial == NULL) {
441b62c1 2539 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
1da177e4
LT		 2540 return -ENOMEM;
2541 }
241ca64f 2542 mutex_init(&edge_serial->es_lock);
1da177e4
LT		 2543 edge_serial->serial = serial;
2544 usb_set_serial_data(serial, edge_serial);
2545
2742fd88 2546 status = download_fw(edge_serial);
1da177e4 2547 if (status) {
2742fd88 2548 kfree(edge_serial);
1da177e4
LT		 2549 return status;
2550 }
2551
1da177e4 2552 return 0;
1da177e4
LT		 2553}
2554
f9c99bb8 2555static void edge_disconnect(struct usb_serial *serial)
1da177e4 2556{
f9c99bb8
AS		 2557}
2558
2559static void edge_release(struct usb_serial *serial)
2560{
00361530
JH		 2561 kfree(usb_get_serial_data(serial));
2562}
2563
2564static int edge_port_probe(struct usb_serial_port *port)
2565{
f9c99bb8 2566 struct edgeport_port *edge_port;
00361530 2567 int ret;
f9c99bb8 2568
00361530
JH		 2569 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2570 if (!edge_port)
2571 return -ENOMEM;
2572
2573 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2574 GFP_KERNEL);
2575 if (ret) {
2576 kfree(edge_port);
2577 return -ENOMEM;
2578 }
2579
00361530
JH		 2580 spin_lock_init(&edge_port->ep_lock);
2581 edge_port->port = port;
2582 edge_port->edge_serial = usb_get_serial_data(port->serial);
2583 edge_port->bUartMode = default_uart_mode;
2584
2585 usb_set_serial_port_data(port, edge_port);
2586
5d8c61bc
JH		 2587 ret = edge_create_sysfs_attrs(port);
2588 if (ret) {
2589 kfifo_free(&edge_port->write_fifo);
2590 kfree(edge_port);
2591 return ret;
2592 }
2593
00361530 2594 return 0;
1da177e4
LT		 2595}
2596
00361530
JH		 2597static int edge_port_remove(struct usb_serial_port *port)
2598{
2599 struct edgeport_port *edge_port;
2600
2601 edge_port = usb_get_serial_port_data(port);
2602
2603 edge_remove_sysfs_attrs(port);
2604 kfifo_free(&edge_port->write_fifo);
2605 kfree(edge_port);
2606
2607 return 0;
2608}
1da177e4 2609
fc4cbd75
MP		 2610/* Sysfs Attributes */
2611
2612static ssize_t show_uart_mode(struct device *dev,
2613 struct device_attribute *attr, char *buf)
2614{
2615 struct usb_serial_port *port = to_usb_serial_port(dev);
2616 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2617
2618 return sprintf(buf, "%d\n", edge_port->bUartMode);
2619}
2620
2621static ssize_t store_uart_mode(struct device *dev,
2622 struct device_attribute *attr, const char *valbuf, size_t count)
2623{
2624 struct usb_serial_port *port = to_usb_serial_port(dev);
2625 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2626 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2627
67e6da70 2628 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
fc4cbd75
MP		 2629
2630 if (v < 256)
2631 edge_port->bUartMode = v;
2632 else
441b62c1 2633 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
fc4cbd75
MP		 2634
2635 return count;
2636}
2637
2742fd88
AC		 2638static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2639 store_uart_mode);
fc4cbd75
MP		 2640
2641static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2642{
2643 return device_create_file(&port->dev, &dev_attr_uart_mode);
2644}
2645
2646static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2647{
2648 device_remove_file(&port->dev, &dev_attr_uart_mode);
2649 return 0;
2650}
2651
2652
ea65370d 2653static struct usb_serial_driver edgeport_1port_device = {
18fcac35 2654 .driver = {
269bda1c
GKH		 2655 .owner = THIS_MODULE,
2656 .name = "edgeport_ti_1",
18fcac35 2657 },
269bda1c 2658 .description = "Edgeport TI 1 port adapter",
1da177e4 2659 .id_table = edgeport_1port_id_table,
1da177e4
LT		 2660 .num_ports = 1,
2661 .open = edge_open,
2662 .close = edge_close,
2663 .throttle = edge_throttle,
2664 .unthrottle = edge_unthrottle,
2665 .attach = edge_startup,
f9c99bb8
AS		 2666 .disconnect = edge_disconnect,
2667 .release = edge_release,
00361530
JH		 2668 .port_probe = edge_port_probe,
2669 .port_remove = edge_port_remove,
1da177e4
LT		 2670 .ioctl = edge_ioctl,
2671 .set_termios = edge_set_termios,
2672 .tiocmget = edge_tiocmget,
2673 .tiocmset = edge_tiocmset,
0bca1b91 2674 .get_icount = edge_get_icount,
1da177e4
LT		 2675 .write = edge_write,
2676 .write_room = edge_write_room,
2677 .chars_in_buffer = edge_chars_in_buffer,
2678 .break_ctl = edge_break,
2679 .read_int_callback = edge_interrupt_callback,
2680 .read_bulk_callback = edge_bulk_in_callback,
2681 .write_bulk_callback = edge_bulk_out_callback,
2682};
2683
ea65370d 2684static struct usb_serial_driver edgeport_2port_device = {
18fcac35 2685 .driver = {
269bda1c
GKH		 2686 .owner = THIS_MODULE,
2687 .name = "edgeport_ti_2",
18fcac35 2688 },
269bda1c 2689 .description = "Edgeport TI 2 port adapter",
1da177e4 2690 .id_table = edgeport_2port_id_table,
1da177e4
LT		 2691 .num_ports = 2,
2692 .open = edge_open,
2693 .close = edge_close,
2694 .throttle = edge_throttle,
2695 .unthrottle = edge_unthrottle,
2696 .attach = edge_startup,
f9c99bb8
AS		 2697 .disconnect = edge_disconnect,
2698 .release = edge_release,
00361530
JH		 2699 .port_probe = edge_port_probe,
2700 .port_remove = edge_port_remove,
1da177e4
LT		 2701 .ioctl = edge_ioctl,
2702 .set_termios = edge_set_termios,
2703 .tiocmget = edge_tiocmget,
2704 .tiocmset = edge_tiocmset,
2705 .write = edge_write,
2706 .write_room = edge_write_room,
2707 .chars_in_buffer = edge_chars_in_buffer,
2708 .break_ctl = edge_break,
2709 .read_int_callback = edge_interrupt_callback,
2710 .read_bulk_callback = edge_bulk_in_callback,
2711 .write_bulk_callback = edge_bulk_out_callback,
2712};
2713
7dbe2460
AS		 2714static struct usb_serial_driver * const serial_drivers[] = {
2715 &edgeport_1port_device, &edgeport_2port_device, NULL
2716};
2717
68e24113 2718module_usb_serial_driver(serial_drivers, id_table_combined);
1da177e4 2719
1da177e4
LT		 2720MODULE_AUTHOR(DRIVER_AUTHOR);
2721MODULE_DESCRIPTION(DRIVER_DESC);
2722MODULE_LICENSE("GPL");
d12b219a 2723MODULE_FIRMWARE("edgeport/down3.bin");
1da177e4 2724
1da177e4
LT		 2725module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2726MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2727
2728module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2742fd88
AC		 2729MODULE_PARM_DESC(ignore_cpu_rev,
2730 "Ignore the cpu revision when connecting to a device");
1da177e4 2731
fc4cbd75
MP		 2732module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2733MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
Linux kernel - Deliverables
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