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USB: serial: io_edgeport: handle unbound ports on URB completion
[mirror_ubuntu-bionic-kernel.git] / drivers / usb / serial / io_edgeport.c
CommitLineData
5fd54ace 1// SPDX-License-Identifier: GPL-2.0+
1da177e4
LT		 2/*
3 * Edgeport USB Serial Converter driver
4 *
5 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 *
1da177e4
LT		 8 * Supports the following devices:
9 * Edgeport/4
10 * Edgeport/4t
11 * Edgeport/2
12 * Edgeport/4i
13 * Edgeport/2i
14 * Edgeport/421
15 * Edgeport/21
16 * Rapidport/4
17 * Edgeport/8
18 * Edgeport/2D8
19 * Edgeport/4D8
20 * Edgeport/8i
21 *
22 * For questions or problems with this driver, contact Inside Out
23 * Networks technical support, or Peter Berger <pberger@brimson.com>,
24 * or Al Borchers <alborchers@steinerpoint.com>.
25 *
1da177e4
LT		 26 */
27
1da177e4
LT		 28#include <linux/kernel.h>
29#include <linux/jiffies.h>
30#include <linux/errno.h>
1da177e4
LT		 31#include <linux/slab.h>
32#include <linux/tty.h>
33#include <linux/tty_driver.h>
34#include <linux/tty_flip.h>
35#include <linux/module.h>
36#include <linux/spinlock.h>
37#include <linux/serial.h>
38#include <linux/ioctl.h>
39#include <linux/wait.h>
5b9ea932
JS		 40#include <linux/firmware.h>
41#include <linux/ihex.h>
03f0dbf7 42#include <linux/uaccess.h>
1da177e4 43#include <linux/usb.h>
a969888c 44#include <linux/usb/serial.h>
1da177e4
LT		 45#include "io_edgeport.h"
46#include "io_ionsp.h" /* info for the iosp messages */
47#include "io_16654.h" /* 16654 UART defines */
48
1da177e4
LT		 49#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
50#define DRIVER_DESC "Edgeport USB Serial Driver"
51
1da177e4
LT		 52#define MAX_NAME_LEN 64
53
1da177e4 54#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
1da177e4 55
35d47976
JH		 56static const struct usb_device_id edgeport_2port_id_table[] = {
57 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
58 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
59 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
60 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
62 { }
63};
64
65static const struct usb_device_id edgeport_4port_id_table[] = {
66 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
67 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
68 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
69 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
76 { }
77};
78
79static const struct usb_device_id edgeport_8port_id_table[] = {
80 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
86 { }
87};
88
89static const struct usb_device_id Epic_port_id_table[] = {
90 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
95 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
98 { }
99};
100
101/* Devices that this driver supports */
102static const struct usb_device_id id_table_combined[] = {
103 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
124 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
125 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
129 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
130 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
132 { } /* Terminating entry */
133};
134
135MODULE_DEVICE_TABLE(usb, id_table_combined);
136
137
1da177e4
LT		 138/* receive port state */
139enum RXSTATE {
03f0dbf7
AC		 140 EXPECT_HDR1 = 0, /* Expect header byte 1 */
141 EXPECT_HDR2 = 1, /* Expect header byte 2 */
142 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
143 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
1da177e4
LT		 144};
145
146
03f0dbf7
AC		 147/* Transmit Fifo
148 * This Transmit queue is an extension of the edgeport Rx buffer.
149 * The maximum amount of data buffered in both the edgeport
1da177e4
LT		 150 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
151 */
152struct TxFifo {
153 unsigned int head; /* index to head pointer (write) */
154 unsigned int tail; /* index to tail pointer (read) */
155 unsigned int count; /* Bytes in queue */
156 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
157 unsigned char *fifo; /* allocated Buffer */
158};
159
160/* This structure holds all of the local port information */
161struct edgeport_port {
162 __u16 txCredits; /* our current credits for this port */
163 __u16 maxTxCredits; /* the max size of the port */
164
165 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
166 struct urb *write_urb; /* write URB for this port */
cb8eaa8b 167 bool write_in_progress; /* 'true' while a write URB is outstanding */
1da177e4
LT		 168 spinlock_t ep_lock;
169
170 __u8 shadowLCR; /* last LCR value received */
171 __u8 shadowMCR; /* last MCR value received */
172 __u8 shadowMSR; /* last MSR value received */
173 __u8 shadowLSR; /* last LSR value received */
174 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
175 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
176 __u8 validDataMask;
177 __u32 baudRate;
178
cb8eaa8b
RK		 179 bool open;
180 bool openPending;
181 bool commandPending;
182 bool closePending;
183 bool chaseResponsePending;
1da177e4
LT		 184
185 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
186 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
187 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
1da177e4 188
1da177e4
LT		 189 struct usb_serial_port *port; /* loop back to the owner of this object */
190};
191
192
193/* This structure holds all of the individual device information */
194struct edgeport_serial {
ad93375a 195 char name[MAX_NAME_LEN+2]; /* string name of this device */
1da177e4
LT		 196
197 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
198 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
199 struct edgeport_product_info product_info; /* Product Info */
6e8cf775
GKH		 200 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
201 int is_epic; /* flag if EPiC device or not */
1da177e4
LT		 202
203 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
03f0dbf7
AC		 204 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
205 struct urb *interrupt_read_urb; /* our interrupt urb */
1da177e4
LT		 206
207 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
03f0dbf7
AC		 208 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
209 struct urb *read_urb; /* our bulk read urb */
cb8eaa8b 210 bool read_in_progress;
1da177e4
LT		 211 spinlock_t es_lock;
212
213 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
214
215 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
216
217 enum RXSTATE rxState; /* the current state of the bulk receive processor */
218 __u8 rxHeader1; /* receive header byte 1 */
219 __u8 rxHeader2; /* receive header byte 2 */
220 __u8 rxHeader3; /* receive header byte 3 */
221 __u8 rxPort; /* the port that we are currently receiving data for */
222 __u8 rxStatusCode; /* the receive status code */
223 __u8 rxStatusParam; /* the receive status paramater */
224 __s16 rxBytesRemaining; /* the number of port bytes left to read */
225 struct usb_serial *serial; /* loop back to the owner of this object */
226};
227
228/* baud rate information */
229struct divisor_table_entry {
230 __u32 BaudRate;
231 __u16 Divisor;
232};
233
03f0dbf7
AC		 234/*
235 * Define table of divisors for Rev A EdgePort/4 hardware
236 * These assume a 3.6864MHz crystal, the standard /16, and
237 * MCR.7 = 0.
238 */
239
4c4c9432 240static const struct divisor_table_entry divisor_table[] = {
03f0dbf7
AC		 241 { 50, 4608},
242 { 75, 3072},
243 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
244 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
1da177e4
LT		 245 { 150, 1536},
246 { 300, 768},
247 { 600, 384},
248 { 1200, 192},
249 { 1800, 128},
250 { 2400, 96},
251 { 4800, 48},
252 { 7200, 32},
253 { 9600, 24},
254 { 14400, 16},
255 { 19200, 12},
256 { 38400, 6},
257 { 57600, 4},
258 { 115200, 2},
259 { 230400, 1},
260};
261
36ccce49
GKH		 262/* Number of outstanding Command Write Urbs */
263static atomic_t CmdUrbs = ATOMIC_INIT(0);
1da177e4
LT		 264
265
266/* local function prototypes */
267
268/* function prototypes for all URB callbacks */
03f0dbf7
AC		 269static void edge_interrupt_callback(struct urb *urb);
270static void edge_bulk_in_callback(struct urb *urb);
271static void edge_bulk_out_data_callback(struct urb *urb);
272static void edge_bulk_out_cmd_callback(struct urb *urb);
1da177e4
LT		 273
274/* function prototypes for the usbserial callbacks */
a509a7e4 275static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
335f8514 276static void edge_close(struct usb_serial_port *port);
03f0dbf7
AC		 277static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
278 const unsigned char *buf, int count);
279static int edge_write_room(struct tty_struct *tty);
280static int edge_chars_in_buffer(struct tty_struct *tty);
281static void edge_throttle(struct tty_struct *tty);
282static void edge_unthrottle(struct tty_struct *tty);
283static void edge_set_termios(struct tty_struct *tty,
284 struct usb_serial_port *port,
285 struct ktermios *old_termios);
00a0d0d6 286static int edge_ioctl(struct tty_struct *tty,
03f0dbf7
AC		 287 unsigned int cmd, unsigned long arg);
288static void edge_break(struct tty_struct *tty, int break_state);
60b33c13 289static int edge_tiocmget(struct tty_struct *tty);
20b9d177 290static int edge_tiocmset(struct tty_struct *tty,
03f0dbf7
AC		 291 unsigned int set, unsigned int clear);
292static int edge_startup(struct usb_serial *serial);
f9c99bb8
AS		 293static void edge_disconnect(struct usb_serial *serial);
294static void edge_release(struct usb_serial *serial);
c27f3efc
JH		 295static int edge_port_probe(struct usb_serial_port *port);
296static int edge_port_remove(struct usb_serial_port *port);
1da177e4 297
1da177e4 298/* function prototypes for all of our local functions */
03f0dbf7
AC		 299
300static void process_rcvd_data(struct edgeport_serial *edge_serial,
301 unsigned char *buffer, __u16 bufferLength);
302static void process_rcvd_status(struct edgeport_serial *edge_serial,
303 __u8 byte2, __u8 byte3);
2e124b4a
JS		 304static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
305 int length);
03f0dbf7
AC		 306static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
307static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
308 __u8 lsr, __u8 data);
309static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
310 __u8 param);
984f6868 311static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
03f0dbf7
AC		 312static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
313 int baudRate);
314static void change_port_settings(struct tty_struct *tty,
315 struct edgeport_port *edge_port,
316 struct ktermios *old_termios);
317static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
318 __u8 regNum, __u8 regValue);
319static int write_cmd_usb(struct edgeport_port *edge_port,
320 unsigned char *buffer, int writeLength);
321static void send_more_port_data(struct edgeport_serial *edge_serial,
322 struct edgeport_port *edge_port);
323
324static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
325 __u16 length, const __u8 *data);
326static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
327 __u16 length, __u8 *data);
328static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
329 __u16 length, const __u8 *data);
330static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
331static void get_boot_desc(struct edgeport_serial *edge_serial);
332static void load_application_firmware(struct edgeport_serial *edge_serial);
333
334static void unicode_to_ascii(char *string, int buflen,
335 __le16 *unicode, int unicode_size);
336
337
338/* ************************************************************************ */
339/* ************************************************************************ */
340/* ************************************************************************ */
341/* ************************************************************************ */
1da177e4
LT		 342
343/************************************************************************
344 * *
345 * update_edgeport_E2PROM() Compare current versions of *
346 * Boot ROM and Manufacture *
347 * Descriptors with versions *
348 * embedded in this driver *
349 * *
350 ************************************************************************/
03f0dbf7 351static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
1da177e4 352{
984f6868 353 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 354 __u32 BootCurVer;
355 __u32 BootNewVer;
5b9ea932
JS		 356 __u8 BootMajorVersion;
357 __u8 BootMinorVersion;
358 __u16 BootBuildNumber;
359 __u32 Bootaddr;
360 const struct ihex_binrec *rec;
361 const struct firmware *fw;
362 const char *fw_name;
1da177e4
LT		 363 int response;
364
1da177e4 365 switch (edge_serial->product_info.iDownloadFile) {
03f0dbf7
AC		 366 case EDGE_DOWNLOAD_FILE_I930:
367 fw_name = "edgeport/boot.fw";
368 break;
369 case EDGE_DOWNLOAD_FILE_80251:
370 fw_name = "edgeport/boot2.fw";
371 break;
372 default:
373 return;
1da177e4
LT		 374 }
375
5b9ea932
JS		 376 response = request_ihex_firmware(&fw, fw_name,
377 &edge_serial->serial->dev->dev);
378 if (response) {
984f6868 379 dev_err(dev, "Failed to load image \"%s\" err %d\n",
5b9ea932
JS		 380 fw_name, response);
381 return;
382 }
383
384 rec = (const struct ihex_binrec *)fw->data;
385 BootMajorVersion = rec->data[0];
386 BootMinorVersion = rec->data[1];
387 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
388
03f0dbf7 389 /* Check Boot Image Version */
1da177e4
LT		 390 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
391 (edge_serial->boot_descriptor.MinorVersion << 16) +
392 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
393
394 BootNewVer = (BootMajorVersion << 24) +
395 (BootMinorVersion << 16) +
5b9ea932 396 BootBuildNumber;
1da177e4 397
984f6868 398 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
1da177e4
LT		 399 edge_serial->boot_descriptor.MajorVersion,
400 edge_serial->boot_descriptor.MinorVersion,
401 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
402
403
404 if (BootNewVer > BootCurVer) {
984f6868 405 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
1da177e4
LT		 406 edge_serial->boot_descriptor.MajorVersion,
407 edge_serial->boot_descriptor.MinorVersion,
408 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
5b9ea932 409 BootMajorVersion, BootMinorVersion, BootBuildNumber);
1da177e4 410
984f6868 411 dev_dbg(dev, "Downloading new Boot Image\n");
1da177e4 412
5b9ea932
JS		 413 for (rec = ihex_next_binrec(rec); rec;
414 rec = ihex_next_binrec(rec)) {
415 Bootaddr = be32_to_cpu(rec->addr);
416 response = rom_write(edge_serial->serial,
417 Bootaddr >> 16,
418 Bootaddr & 0xFFFF,
419 be16_to_cpu(rec->len),
420 &rec->data[0]);
1da177e4 421 if (response < 0) {
5b9ea932
JS		 422 dev_err(&edge_serial->serial->dev->dev,
423 "rom_write failed (%x, %x, %d)\n",
424 Bootaddr >> 16, Bootaddr & 0xFFFF,
425 be16_to_cpu(rec->len));
1da177e4
LT		 426 break;
427 }
428 }
429 } else {
984f6868 430 dev_dbg(dev, "Boot Image -- already up to date\n");
1da177e4 431 }
5b9ea932 432 release_firmware(fw);
1da177e4
LT		 433}
434
1da177e4
LT		 435#if 0
436/************************************************************************
437 *
438 * Get string descriptor from device
439 *
440 ************************************************************************/
03f0dbf7
AC		 441static int get_string_desc(struct usb_device *dev, int Id,
442 struct usb_string_descriptor **pRetDesc)
1da177e4
LT		 443{
444 struct usb_string_descriptor StringDesc;
445 struct usb_string_descriptor *pStringDesc;
446
984f6868 447 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id);
1da177e4 448
03f0dbf7
AC		 449 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
450 sizeof(StringDesc)))
1da177e4 451 return 0;
1da177e4 452
03f0dbf7
AC		 453 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
454 if (!pStringDesc)
1da177e4 455 return -1;
1da177e4 456
03f0dbf7
AC		 457 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
458 StringDesc.bLength)) {
1da177e4
LT		 459 kfree(pStringDesc);
460 return -1;
461 }
462
463 *pRetDesc = pStringDesc;
464 return 0;
465}
466#endif
467
984f6868
GKH		 468static void dump_product_info(struct edgeport_serial *edge_serial,
469 struct edgeport_product_info *product_info)
6e8cf775 470{
984f6868
GKH		 471 struct device *dev = &edge_serial->serial->dev->dev;
472
03f0dbf7 473 /* Dump Product Info structure */
984f6868
GKH		 474 dev_dbg(dev, "**Product Information:\n");
475 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
476 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
477 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
478 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
479 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
480 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
481 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
482 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
483 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
484 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
485 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
486 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
487 product_info->BootMajorVersion,
488 product_info->BootMinorVersion,
489 le16_to_cpu(product_info->BootBuildNumber));
490 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
491 product_info->FirmwareMajorVersion,
492 product_info->FirmwareMinorVersion,
493 le16_to_cpu(product_info->FirmwareBuildNumber));
494 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
495 product_info->ManufactureDescDate[0],
496 product_info->ManufactureDescDate[1],
497 product_info->ManufactureDescDate[2]+1900);
498 dev_dbg(dev, " iDownloadFile 0x%x\n",
499 product_info->iDownloadFile);
500 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
6e8cf775
GKH		 501}
502
1da177e4
LT		 503static void get_product_info(struct edgeport_serial *edge_serial)
504{
505 struct edgeport_product_info *product_info = &edge_serial->product_info;
506
03f0dbf7
AC		 507 memset(product_info, 0, sizeof(struct edgeport_product_info));
508
509 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
510 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
511 product_info->ProdInfoVer = 0;
512
513 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
514 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
515 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
516 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
517
518 product_info->BootMajorVersion =
519 edge_serial->boot_descriptor.MajorVersion;
520 product_info->BootMinorVersion =
521 edge_serial->boot_descriptor.MinorVersion;
522 product_info->BootBuildNumber =
523 edge_serial->boot_descriptor.BuildNumber;
524
525 memcpy(product_info->ManufactureDescDate,
526 edge_serial->manuf_descriptor.DescDate,
527 sizeof(edge_serial->manuf_descriptor.DescDate));
528
529 /* check if this is 2nd generation hardware */
530 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
531 & ION_DEVICE_ID_80251_NETCHIP)
532 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
533 else
534 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
984f6868 535
03f0dbf7 536 /* Determine Product type and set appropriate flags */
1da177e4 537 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
03f0dbf7
AC		 538 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
539 case ION_DEVICE_ID_EDGEPORT_4T:
540 case ION_DEVICE_ID_EDGEPORT_4:
541 case ION_DEVICE_ID_EDGEPORT_2:
542 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
543 case ION_DEVICE_ID_EDGEPORT_8:
544 case ION_DEVICE_ID_EDGEPORT_421:
545 case ION_DEVICE_ID_EDGEPORT_21:
546 case ION_DEVICE_ID_EDGEPORT_2_DIN:
547 case ION_DEVICE_ID_EDGEPORT_4_DIN:
548 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
549 product_info->IsRS232 = 1;
550 break;
1da177e4 551
03f0dbf7
AC		 552 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
553 product_info->IsRS422 = 1;
554 product_info->IsRS485 = 1;
555 break;
1da177e4 556
03f0dbf7
AC		 557 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
558 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
559 product_info->IsRS422 = 1;
560 break;
1da177e4
LT		 561 }
562
984f6868 563 dump_product_info(edge_serial, product_info);
6e8cf775 564}
1da177e4 565
6e8cf775
GKH		 566static int get_epic_descriptor(struct edgeport_serial *ep)
567{
568 int result;
569 struct usb_serial *serial = ep->serial;
570 struct edgeport_product_info *product_info = &ep->product_info;
e4457d97 571 struct edge_compatibility_descriptor *epic;
6e8cf775 572 struct edge_compatibility_bits *bits;
984f6868 573 struct device *dev = &serial->dev->dev;
6e8cf775
GKH		 574
575 ep->is_epic = 0;
e4457d97
JH		 576
577 epic = kmalloc(sizeof(*epic), GFP_KERNEL);
578 if (!epic)
579 return -ENOMEM;
580
6e8cf775
GKH		 581 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
582 USB_REQUEST_ION_GET_EPIC_DESC,
583 0xC0, 0x00, 0x00,
e4457d97 584 epic, sizeof(*epic),
6e8cf775 585 300);
e4457d97 586 if (result == sizeof(*epic)) {
6e8cf775 587 ep->is_epic = 1;
e4457d97 588 memcpy(&ep->epic_descriptor, epic, sizeof(*epic));
6e8cf775
GKH		 589 memset(product_info, 0, sizeof(struct edgeport_product_info));
590
03f0dbf7
AC		 591 product_info->NumPorts = epic->NumPorts;
592 product_info->ProdInfoVer = 0;
593 product_info->FirmwareMajorVersion = epic->MajorVersion;
594 product_info->FirmwareMinorVersion = epic->MinorVersion;
595 product_info->FirmwareBuildNumber = epic->BuildNumber;
596 product_info->iDownloadFile = epic->iDownloadFile;
597 product_info->EpicVer = epic->EpicVer;
598 product_info->Epic = epic->Supports;
599 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
984f6868 600 dump_product_info(ep, product_info);
6e8cf775
GKH		 601
602 bits = &ep->epic_descriptor.Supports;
984f6868
GKH		 603 dev_dbg(dev, "**EPIC descriptor:\n");
604 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
605 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
606 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
607 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
608 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
609 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
610 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
611 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
612 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
613 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
614 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
615 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
616 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
e4457d97
JH		 617
618 result = 0;
619 } else if (result >= 0) {
620 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n",
621 result);
622 result = -EIO;
6e8cf775
GKH		 623 }
624
e4457d97
JH		 625 kfree(epic);
626
6e8cf775 627 return result;
1da177e4
LT		 628}
629
630
631/************************************************************************/
632/************************************************************************/
633/* U S B C A L L B A C K F U N C T I O N S */
634/* U S B C A L L B A C K F U N C T I O N S */
635/************************************************************************/
636/************************************************************************/
637
638/*****************************************************************************
639 * edge_interrupt_callback
03f0dbf7 640 * this is the callback function for when we have received data on the
1da177e4
LT		 641 * interrupt endpoint.
642 *****************************************************************************/
03f0dbf7 643static void edge_interrupt_callback(struct urb *urb)
1da177e4 644{
984f6868
GKH		 645 struct edgeport_serial *edge_serial = urb->context;
646 struct device *dev;
1da177e4
LT		 647 struct edgeport_port *edge_port;
648 struct usb_serial_port *port;
649 unsigned char *data = urb->transfer_buffer;
650 int length = urb->actual_length;
d95df1eb 651 unsigned long flags;
1da177e4
LT		 652 int bytes_avail;
653 int position;
654 int txCredits;
655 int portNumber;
656 int result;
2a393f5f 657 int status = urb->status;
1da177e4 658
2a393f5f 659 switch (status) {
1da177e4
LT		 660 case 0:
661 /* success */
662 break;
663 case -ECONNRESET:
664 case -ENOENT:
665 case -ESHUTDOWN:
666 /* this urb is terminated, clean up */
984f6868 667 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1da177e4
LT		 668 return;
669 default:
984f6868 670 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
1da177e4
LT		 671 goto exit;
672 }
673
984f6868
GKH		 674 dev = &edge_serial->serial->dev->dev;
675
03f0dbf7 676 /* process this interrupt-read even if there are no ports open */
1da177e4 677 if (length) {
59d33f2f 678 usb_serial_debug_data(dev, __func__, length, data);
1da177e4
LT		 679
680 if (length > 1) {
681 bytes_avail = data[0] | (data[1] << 8);
682 if (bytes_avail) {
d95df1eb 683 spin_lock_irqsave(&edge_serial->es_lock, flags);
1da177e4 684 edge_serial->rxBytesAvail += bytes_avail;
984f6868
GKH		 685 dev_dbg(dev,
686 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
687 __func__, bytes_avail,
688 edge_serial->rxBytesAvail,
689 edge_serial->read_in_progress);
1da177e4
LT		 690
691 if (edge_serial->rxBytesAvail > 0 &&
692 !edge_serial->read_in_progress) {
984f6868 693 dev_dbg(dev, "%s - posting a read\n", __func__);
cb8eaa8b 694 edge_serial->read_in_progress = true;
1da177e4 695
03f0dbf7
AC		 696 /* we have pending bytes on the
697 bulk in pipe, send a request */
1da177e4
LT		 698 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
699 if (result) {
984f6868
GKH		 700 dev_err(dev,
701 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
702 __func__, result);
cb8eaa8b 703 edge_serial->read_in_progress = false;
1da177e4
LT		 704 }
705 }
d95df1eb
JO		 706 spin_unlock_irqrestore(&edge_serial->es_lock,
707 flags);
1da177e4
LT		 708 }
709 }
710 /* grab the txcredits for the ports if available */
711 position = 2;
712 portNumber = 0;
03f0dbf7
AC		 713 while ((position < length) &&
714 (portNumber < edge_serial->serial->num_ports)) {
1da177e4
LT		 715 txCredits = data[position] | (data[position+1] << 8);
716 if (txCredits) {
717 port = edge_serial->serial->port[portNumber];
718 edge_port = usb_get_serial_port_data(port);
a868ee19 719 if (edge_port && edge_port->open) {
d95df1eb
JO		 720 spin_lock_irqsave(&edge_port->ep_lock,
721 flags);
1da177e4 722 edge_port->txCredits += txCredits;
d95df1eb
JO		 723 spin_unlock_irqrestore(&edge_port->ep_lock,
724 flags);
984f6868
GKH		 725 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
726 __func__, portNumber,
727 edge_port->txCredits);
1da177e4 728
03f0dbf7
AC		 729 /* tell the tty driver that something
730 has changed */
6aad04f2 731 tty_port_tty_wakeup(&edge_port->port->port);
03f0dbf7
AC		 732 /* Since we have more credit, check
733 if more data can be sent */
734 send_more_port_data(edge_serial,
735 edge_port);
1da177e4
LT		 736 }
737 }
738 position += 2;
739 ++portNumber;
740 }
741 }
742
743exit:
03f0dbf7
AC		 744 result = usb_submit_urb(urb, GFP_ATOMIC);
745 if (result)
746 dev_err(&urb->dev->dev,
747 "%s - Error %d submitting control urb\n",
748 __func__, result);
1da177e4
LT		 749}
750
751
752/*****************************************************************************
753 * edge_bulk_in_callback
03f0dbf7 754 * this is the callback function for when we have received data on the
1da177e4
LT		 755 * bulk in endpoint.
756 *****************************************************************************/
03f0dbf7 757static void edge_bulk_in_callback(struct urb *urb)
1da177e4 758{
cdc97792 759 struct edgeport_serial *edge_serial = urb->context;
984f6868 760 struct device *dev;
1da177e4 761 unsigned char *data = urb->transfer_buffer;
2a393f5f 762 int retval;
1da177e4 763 __u16 raw_data_length;
2a393f5f 764 int status = urb->status;
d95df1eb 765 unsigned long flags;
1da177e4 766
2a393f5f 767 if (status) {
984f6868
GKH		 768 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
769 __func__, status);
cb8eaa8b 770 edge_serial->read_in_progress = false;
1da177e4
LT		 771 return;
772 }
773
774 if (urb->actual_length == 0) {
984f6868 775 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
cb8eaa8b 776 edge_serial->read_in_progress = false;
1da177e4
LT		 777 return;
778 }
779
984f6868 780 dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 781 raw_data_length = urb->actual_length;
782
59d33f2f 783 usb_serial_debug_data(dev, __func__, raw_data_length, data);
1da177e4 784
d95df1eb 785 spin_lock_irqsave(&edge_serial->es_lock, flags);
1da177e4
LT		 786
787 /* decrement our rxBytes available by the number that we just got */
788 edge_serial->rxBytesAvail -= raw_data_length;
789
984f6868
GKH		 790 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
791 raw_data_length, edge_serial->rxBytesAvail);
1da177e4 792
03f0dbf7 793 process_rcvd_data(edge_serial, data, urb->actual_length);
1da177e4
LT		 794
795 /* check to see if there's any more data for us to read */
796 if (edge_serial->rxBytesAvail > 0) {
984f6868 797 dev_dbg(dev, "%s - posting a read\n", __func__);
2a393f5f
GKH		 798 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
799 if (retval) {
984f6868
GKH		 800 dev_err(dev,
801 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
802 __func__, retval);
cb8eaa8b 803 edge_serial->read_in_progress = false;
1da177e4
LT		 804 }
805 } else {
cb8eaa8b 806 edge_serial->read_in_progress = false;
1da177e4
LT		 807 }
808
d95df1eb 809 spin_unlock_irqrestore(&edge_serial->es_lock, flags);
1da177e4
LT		 810}
811
812
813/*****************************************************************************
814 * edge_bulk_out_data_callback
03f0dbf7
AC		 815 * this is the callback function for when we have finished sending
816 * serial data on the bulk out endpoint.
1da177e4 817 *****************************************************************************/
03f0dbf7 818static void edge_bulk_out_data_callback(struct urb *urb)
1da177e4 819{
cdc97792 820 struct edgeport_port *edge_port = urb->context;
2a393f5f 821 int status = urb->status;
1da177e4 822
2a393f5f 823 if (status) {
984f6868
GKH		 824 dev_dbg(&urb->dev->dev,
825 "%s - nonzero write bulk status received: %d\n",
826 __func__, status);
1da177e4
LT		 827 }
828
6aad04f2
JS		 829 if (edge_port->open)
830 tty_port_tty_wakeup(&edge_port->port->port);
1da177e4 831
03f0dbf7 832 /* Release the Write URB */
cb8eaa8b 833 edge_port->write_in_progress = false;
1da177e4 834
03f0dbf7
AC		 835 /* Check if more data needs to be sent */
836 send_more_port_data((struct edgeport_serial *)
837 (usb_get_serial_data(edge_port->port->serial)), edge_port);
1da177e4
LT		 838}
839
840
841/*****************************************************************************
842 * BulkOutCmdCallback
03f0dbf7
AC		 843 * this is the callback function for when we have finished sending a
844 * command on the bulk out endpoint.
1da177e4 845 *****************************************************************************/
03f0dbf7 846static void edge_bulk_out_cmd_callback(struct urb *urb)
1da177e4 847{
cdc97792 848 struct edgeport_port *edge_port = urb->context;
1da177e4
LT		 849 int status = urb->status;
850
96c706ed 851 atomic_dec(&CmdUrbs);
984f6868
GKH		 852 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
853 __func__, urb, atomic_read(&CmdUrbs));
1da177e4
LT		 854
855
856 /* clean up the transfer buffer */
1bc3c9e1 857 kfree(urb->transfer_buffer);
1da177e4
LT		 858
859 /* Free the command urb */
03f0dbf7 860 usb_free_urb(urb);
1da177e4
LT		 861
862 if (status) {
984f6868
GKH		 863 dev_dbg(&urb->dev->dev,
864 "%s - nonzero write bulk status received: %d\n",
865 __func__, status);
1da177e4
LT		 866 return;
867 }
868
1da177e4 869 /* tell the tty driver that something has changed */
6aad04f2
JS		 870 if (edge_port->open)
871 tty_port_tty_wakeup(&edge_port->port->port);
1da177e4
LT		 872
873 /* we have completed the command */
cb8eaa8b 874 edge_port->commandPending = false;
1da177e4
LT		 875 wake_up(&edge_port->wait_command);
876}
877
878
879/*****************************************************************************
880 * Driver tty interface functions
881 *****************************************************************************/
882
883/*****************************************************************************
884 * SerialOpen
885 * this function is called by the tty driver when a port is opened
886 * If successful, we return 0
887 * Otherwise we return a negative error number.
888 *****************************************************************************/
a509a7e4 889static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4
LT		 890{
891 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
984f6868 892 struct device *dev = &port->dev;
1da177e4
LT		 893 struct usb_serial *serial;
894 struct edgeport_serial *edge_serial;
895 int response;
896
1da177e4
LT		 897 if (edge_port == NULL)
898 return -ENODEV;
899
03f0dbf7
AC		 900 /* see if we've set up our endpoint info yet (can't set it up
901 in edge_startup as the structures were not set up at that time.) */
1da177e4
LT		 902 serial = port->serial;
903 edge_serial = usb_get_serial_data(serial);
95da310e 904 if (edge_serial == NULL)
1da177e4 905 return -ENODEV;
1da177e4
LT		 906 if (edge_serial->interrupt_in_buffer == NULL) {
907 struct usb_serial_port *port0 = serial->port[0];
03f0dbf7 908
1da177e4 909 /* not set up yet, so do it now */
03f0dbf7
AC		 910 edge_serial->interrupt_in_buffer =
911 port0->interrupt_in_buffer;
912 edge_serial->interrupt_in_endpoint =
913 port0->interrupt_in_endpointAddress;
1da177e4
LT		 914 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
915 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
03f0dbf7
AC		 916 edge_serial->bulk_in_endpoint =
917 port0->bulk_in_endpointAddress;
1da177e4 918 edge_serial->read_urb = port0->read_urb;
03f0dbf7
AC		 919 edge_serial->bulk_out_endpoint =
920 port0->bulk_out_endpointAddress;
921
1da177e4
LT		 922 /* set up our interrupt urb */
923 usb_fill_int_urb(edge_serial->interrupt_read_urb,
03f0dbf7
AC		 924 serial->dev,
925 usb_rcvintpipe(serial->dev,
926 port0->interrupt_in_endpointAddress),
927 port0->interrupt_in_buffer,
928 edge_serial->interrupt_read_urb->transfer_buffer_length,
929 edge_interrupt_callback, edge_serial,
930 edge_serial->interrupt_read_urb->interval);
931
1da177e4
LT		 932 /* set up our bulk in urb */
933 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
03f0dbf7
AC		 934 usb_rcvbulkpipe(serial->dev,
935 port0->bulk_in_endpointAddress),
936 port0->bulk_in_buffer,
937 edge_serial->read_urb->transfer_buffer_length,
938 edge_bulk_in_callback, edge_serial);
cb8eaa8b 939 edge_serial->read_in_progress = false;
1da177e4
LT		 940
941 /* start interrupt read for this edgeport
03f0dbf7
AC		 942 * this interrupt will continue as long
943 * as the edgeport is connected */
944 response = usb_submit_urb(edge_serial->interrupt_read_urb,
945 GFP_KERNEL);
1da177e4 946 if (response) {
984f6868
GKH		 947 dev_err(dev, "%s - Error %d submitting control urb\n",
948 __func__, response);
1da177e4
LT		 949 }
950 }
03f0dbf7 951
1da177e4
LT		 952 /* initialize our wait queues */
953 init_waitqueue_head(&edge_port->wait_open);
954 init_waitqueue_head(&edge_port->wait_chase);
1da177e4
LT		 955 init_waitqueue_head(&edge_port->wait_command);
956
1da177e4 957 /* initialize our port settings */
03f0dbf7
AC		 958 edge_port->txCredits = 0; /* Can't send any data yet */
959 /* Must always set this bit to enable ints! */
960 edge_port->shadowMCR = MCR_MASTER_IE;
cb8eaa8b 961 edge_port->chaseResponsePending = false;
1da177e4
LT		 962
963 /* send a open port command */
cb8eaa8b
RK		 964 edge_port->openPending = true;
965 edge_port->open = false;
03f0dbf7 966 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
1da177e4
LT		 967
968 if (response < 0) {
984f6868 969 dev_err(dev, "%s - error sending open port command\n", __func__);
cb8eaa8b 970 edge_port->openPending = false;
1da177e4
LT		 971 return -ENODEV;
972 }
973
974 /* now wait for the port to be completely opened */
03f0dbf7
AC		 975 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
976 OPEN_TIMEOUT);
1da177e4 977
cb8eaa8b 978 if (!edge_port->open) {
1da177e4 979 /* open timed out */
984f6868 980 dev_dbg(dev, "%s - open timedout\n", __func__);
cb8eaa8b 981 edge_port->openPending = false;
1da177e4
LT		 982 return -ENODEV;
983 }
984
985 /* create the txfifo */
986 edge_port->txfifo.head = 0;
987 edge_port->txfifo.tail = 0;
988 edge_port->txfifo.count = 0;
989 edge_port->txfifo.size = edge_port->maxTxCredits;
03f0dbf7 990 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
1da177e4
LT		 991
992 if (!edge_port->txfifo.fifo) {
335f8514 993 edge_close(port);
1da177e4
LT		 994 return -ENOMEM;
995 }
996
997 /* Allocate a URB for the write */
03f0dbf7 998 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
cb8eaa8b 999 edge_port->write_in_progress = false;
1da177e4
LT		 1000
1001 if (!edge_port->write_urb) {
335f8514 1002 edge_close(port);
1da177e4
LT		 1003 return -ENOMEM;
1004 }
1005
1143832e
GKH		 1006 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
1007 __func__, edge_port->maxTxCredits);
1da177e4
LT		 1008
1009 return 0;
1010}
1011
1012
1013/************************************************************************
1014 *
1015 * block_until_chase_response
1016 *
1017 * This function will block the close until one of the following:
1018 * 1. Response to our Chase comes from Edgeport
dc0d5c1e 1019 * 2. A timeout of 10 seconds without activity has expired
1da177e4
LT		 1020 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1021 *
1022 ************************************************************************/
1023static void block_until_chase_response(struct edgeport_port *edge_port)
1024{
984f6868 1025 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1026 DEFINE_WAIT(wait);
1027 __u16 lastCredits;
1028 int timeout = 1*HZ;
1029 int loop = 10;
1030
1031 while (1) {
03f0dbf7 1032 /* Save Last credits */
1da177e4
LT		 1033 lastCredits = edge_port->txCredits;
1034
03f0dbf7 1035 /* Did we get our Chase response */
cb8eaa8b 1036 if (!edge_port->chaseResponsePending) {
984f6868 1037 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
1da177e4 1038
03f0dbf7
AC		 1039 /* did we get all of our credit back? */
1040 if (edge_port->txCredits == edge_port->maxTxCredits) {
984f6868 1041 dev_dbg(dev, "%s - Got all credits\n", __func__);
1da177e4
LT		 1042 return;
1043 }
1044 }
1045
03f0dbf7
AC		 1046 /* Block the thread for a while */
1047 prepare_to_wait(&edge_port->wait_chase, &wait,
1048 TASK_UNINTERRUPTIBLE);
1da177e4
LT		 1049 schedule_timeout(timeout);
1050 finish_wait(&edge_port->wait_chase, &wait);
1051
1052 if (lastCredits == edge_port->txCredits) {
03f0dbf7 1053 /* No activity.. count down. */
1da177e4
LT		 1054 loop--;
1055 if (loop == 0) {
cb8eaa8b 1056 edge_port->chaseResponsePending = false;
984f6868 1057 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
1da177e4
LT		 1058 return;
1059 }
1060 } else {
03f0dbf7 1061 /* Reset timeout value back to 10 seconds */
984f6868 1062 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
03f0dbf7 1063 lastCredits, edge_port->txCredits);
1da177e4
LT		 1064 loop = 10;
1065 }
1066 }
1067}
1068
1069
1070/************************************************************************
1071 *
1072 * block_until_tx_empty
1073 *
1074 * This function will block the close until one of the following:
1075 * 1. TX count are 0
1076 * 2. The edgeport has stopped
dc0d5c1e 1077 * 3. A timeout of 3 seconds without activity has expired
1da177e4
LT		 1078 *
1079 ************************************************************************/
03f0dbf7 1080static void block_until_tx_empty(struct edgeport_port *edge_port)
1da177e4 1081{
984f6868 1082 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1083 DEFINE_WAIT(wait);
1084 struct TxFifo *fifo = &edge_port->txfifo;
1085 __u32 lastCount;
1086 int timeout = HZ/10;
1087 int loop = 30;
1088
1089 while (1) {
03f0dbf7 1090 /* Save Last count */
1da177e4
LT		 1091 lastCount = fifo->count;
1092
03f0dbf7 1093 /* Is the Edgeport Buffer empty? */
1da177e4 1094 if (lastCount == 0) {
984f6868 1095 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1da177e4
LT		 1096 return;
1097 }
1098
03f0dbf7
AC		 1099 /* Block the thread for a while */
1100 prepare_to_wait(&edge_port->wait_chase, &wait,
1101 TASK_UNINTERRUPTIBLE);
1da177e4
LT		 1102 schedule_timeout(timeout);
1103 finish_wait(&edge_port->wait_chase, &wait);
1104
984f6868 1105 dev_dbg(dev, "%s wait\n", __func__);
1da177e4
LT		 1106
1107 if (lastCount == fifo->count) {
03f0dbf7 1108 /* No activity.. count down. */
1da177e4
LT		 1109 loop--;
1110 if (loop == 0) {
984f6868 1111 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1da177e4
LT		 1112 return;
1113 }
1114 } else {
03f0dbf7 1115 /* Reset timeout value back to seconds */
1da177e4
LT		 1116 loop = 30;
1117 }
1118 }
1119}
1120
1121
1122/*****************************************************************************
1123 * edge_close
1124 * this function is called by the tty driver when a port is closed
1125 *****************************************************************************/
335f8514 1126static void edge_close(struct usb_serial_port *port)
1da177e4
LT		 1127{
1128 struct edgeport_serial *edge_serial;
1129 struct edgeport_port *edge_port;
1130 int status;
1131
1da177e4
LT		 1132 edge_serial = usb_get_serial_data(port->serial);
1133 edge_port = usb_get_serial_port_data(port);
03f0dbf7 1134 if (edge_serial == NULL || edge_port == NULL)
1da177e4 1135 return;
03f0dbf7
AC		 1136
1137 /* block until tx is empty */
1da177e4
LT		 1138 block_until_tx_empty(edge_port);
1139
cb8eaa8b 1140 edge_port->closePending = true;
1da177e4 1141
232dce89
GB		 1142 if (!edge_serial->is_epic ||
1143 edge_serial->epic_descriptor.Supports.IOSPChase) {
6e8cf775 1144 /* flush and chase */
cb8eaa8b 1145 edge_port->chaseResponsePending = true;
6e8cf775 1146
984f6868 1147 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
03f0dbf7
AC		 1148 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1149 if (status == 0)
1150 /* block until chase finished */
6e8cf775 1151 block_until_chase_response(edge_port);
03f0dbf7 1152 else
cb8eaa8b 1153 edge_port->chaseResponsePending = false;
1da177e4
LT		 1154 }
1155
232dce89
GB		 1156 if (!edge_serial->is_epic ||
1157 edge_serial->epic_descriptor.Supports.IOSPClose) {
6e8cf775 1158 /* close the port */
984f6868 1159 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
03f0dbf7 1160 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
6e8cf775 1161 }
1da177e4 1162
03f0dbf7 1163 /* port->close = true; */
cb8eaa8b
RK		 1164 edge_port->closePending = false;
1165 edge_port->open = false;
1166 edge_port->openPending = false;
1da177e4 1167
9a25f44f 1168 usb_kill_urb(edge_port->write_urb);
1da177e4
LT		 1169
1170 if (edge_port->write_urb) {
03f0dbf7
AC		 1171 /* if this urb had a transfer buffer already
1172 (old transfer) free it */
1bc3c9e1
JJ		 1173 kfree(edge_port->write_urb->transfer_buffer);
1174 usb_free_urb(edge_port->write_urb);
1da177e4
LT		 1175 edge_port->write_urb = NULL;
1176 }
1bc3c9e1
JJ		 1177 kfree(edge_port->txfifo.fifo);
1178 edge_port->txfifo.fifo = NULL;
03f0dbf7 1179}
1da177e4
LT		 1180
1181/*****************************************************************************
1182 * SerialWrite
03f0dbf7
AC		 1183 * this function is called by the tty driver when data should be written
1184 * to the port.
1185 * If successful, we return the number of bytes written, otherwise we
1186 * return a negative error number.
1da177e4 1187 *****************************************************************************/
95da310e
AC		 1188static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1189 const unsigned char *data, int count)
1da177e4
LT		 1190{
1191 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1192 struct TxFifo *fifo;
1193 int copySize;
1194 int bytesleft;
1195 int firsthalf;
1196 int secondhalf;
1197 unsigned long flags;
1198
1da177e4
LT		 1199 if (edge_port == NULL)
1200 return -ENODEV;
1201
03f0dbf7 1202 /* get a pointer to the Tx fifo */
1da177e4
LT		 1203 fifo = &edge_port->txfifo;
1204
1205 spin_lock_irqsave(&edge_port->ep_lock, flags);
1206
03f0dbf7
AC		 1207 /* calculate number of bytes to put in fifo */
1208 copySize = min((unsigned int)count,
1209 (edge_port->txCredits - fifo->count));
1da177e4 1210
1143832e
GKH		 1211 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1212 __func__, count, edge_port->txCredits - fifo->count, copySize);
1da177e4 1213
03f0dbf7
AC		 1214 /* catch writes of 0 bytes which the tty driver likes to give us,
1215 and when txCredits is empty */
1da177e4 1216 if (copySize == 0) {
984f6868 1217 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1da177e4
LT		 1218 goto finish_write;
1219 }
1220
03f0dbf7
AC		 1221 /* queue the data
1222 * since we can never overflow the buffer we do not have to check for a
1223 * full condition
1224 *
1225 * the copy is done is two parts -- first fill to the end of the buffer
1226 * then copy the reset from the start of the buffer
1227 */
1da177e4 1228 bytesleft = fifo->size - fifo->head;
03f0dbf7 1229 firsthalf = min(bytesleft, copySize);
984f6868
GKH		 1230 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1231 firsthalf, bytesleft);
1da177e4
LT		 1232
1233 /* now copy our data */
1234 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
59d33f2f 1235 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1da177e4 1236
03f0dbf7 1237 /* update the index and size */
1da177e4
LT		 1238 fifo->head += firsthalf;
1239 fifo->count += firsthalf;
1240
03f0dbf7
AC		 1241 /* wrap the index */
1242 if (fifo->head == fifo->size)
1da177e4 1243 fifo->head = 0;
1da177e4
LT		 1244
1245 secondhalf = copySize-firsthalf;
1246
1247 if (secondhalf) {
984f6868 1248 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1da177e4 1249 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
59d33f2f 1250 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
03f0dbf7 1251 /* update the index and size */
1da177e4
LT		 1252 fifo->count += secondhalf;
1253 fifo->head += secondhalf;
03f0dbf7
AC		 1254 /* No need to check for wrap since we can not get to end of
1255 * the fifo in this part
1256 */
1da177e4
LT		 1257 }
1258
1259finish_write:
1260 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1261
03f0dbf7
AC		 1262 send_more_port_data((struct edgeport_serial *)
1263 usb_get_serial_data(port->serial), edge_port);
1da177e4 1264
984f6868
GKH		 1265 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1266 __func__, copySize, edge_port->txCredits, fifo->count);
1da177e4 1267
03f0dbf7 1268 return copySize;
1da177e4
LT		 1269}
1270
1271
1272/************************************************************************
1273 *
1274 * send_more_port_data()
1275 *
1276 * This routine attempts to write additional UART transmit data
1277 * to a port over the USB bulk pipe. It is called (1) when new
1278 * data has been written to a port's TxBuffer from higher layers
1279 * (2) when the peripheral sends us additional TxCredits indicating
1280 * that it can accept more Tx data for a given port; and (3) when
1281 * a bulk write completes successfully and we want to see if we
1282 * can transmit more.
1283 *
1284 ************************************************************************/
03f0dbf7
AC		 1285static void send_more_port_data(struct edgeport_serial *edge_serial,
1286 struct edgeport_port *edge_port)
1da177e4
LT		 1287{
1288 struct TxFifo *fifo = &edge_port->txfifo;
984f6868 1289 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1290 struct urb *urb;
1291 unsigned char *buffer;
1292 int status;
1293 int count;
1294 int bytesleft;
1295 int firsthalf;
1296 int secondhalf;
1297 unsigned long flags;
1298
1da177e4
LT		 1299 spin_lock_irqsave(&edge_port->ep_lock, flags);
1300
1301 if (edge_port->write_in_progress ||
1302 !edge_port->open ||
1303 (fifo->count == 0)) {
1143832e
GKH		 1304 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1305 __func__, fifo->count, edge_port->write_in_progress);
1da177e4
LT		 1306 goto exit_send;
1307 }
1308
03f0dbf7
AC		 1309 /* since the amount of data in the fifo will always fit into the
1310 * edgeport buffer we do not need to check the write length
1311 *
1312 * Do we have enough credits for this port to make it worthwhile
1313 * to bother queueing a write. If it's too small, say a few bytes,
1314 * it's better to wait for more credits so we can do a larger write.
1315 */
1316 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1143832e
GKH		 1317 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1318 __func__, fifo->count, edge_port->txCredits);
1da177e4
LT		 1319 goto exit_send;
1320 }
1321
03f0dbf7 1322 /* lock this write */
cb8eaa8b 1323 edge_port->write_in_progress = true;
1da177e4 1324
03f0dbf7 1325 /* get a pointer to the write_urb */
1da177e4
LT		 1326 urb = edge_port->write_urb;
1327
1bc3c9e1
JJ		 1328 /* make sure transfer buffer is freed */
1329 kfree(urb->transfer_buffer);
1330 urb->transfer_buffer = NULL;
1da177e4 1331
03f0dbf7
AC		 1332 /* build the data header for the buffer and port that we are about
1333 to send out */
1da177e4 1334 count = fifo->count;
03f0dbf7 1335 buffer = kmalloc(count+2, GFP_ATOMIC);
10c642d0 1336 if (!buffer) {
cb8eaa8b 1337 edge_port->write_in_progress = false;
1da177e4
LT		 1338 goto exit_send;
1339 }
1143832e
GKH		 1340 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1341 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1da177e4
LT		 1342
1343 /* now copy our data */
1344 bytesleft = fifo->size - fifo->tail;
03f0dbf7 1345 firsthalf = min(bytesleft, count);
1da177e4
LT		 1346 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1347 fifo->tail += firsthalf;
1348 fifo->count -= firsthalf;
03f0dbf7 1349 if (fifo->tail == fifo->size)
1da177e4 1350 fifo->tail = 0;
1da177e4
LT		 1351
1352 secondhalf = count-firsthalf;
1353 if (secondhalf) {
03f0dbf7
AC		 1354 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1355 secondhalf);
1da177e4
LT		 1356 fifo->tail += secondhalf;
1357 fifo->count -= secondhalf;
1358 }
1359
1360 if (count)
59d33f2f 1361 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1da177e4
LT		 1362
1363 /* fill up the urb with all of our data and submit it */
03f0dbf7
AC		 1364 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1365 usb_sndbulkpipe(edge_serial->serial->dev,
1366 edge_serial->bulk_out_endpoint),
1367 buffer, count+2,
1368 edge_bulk_out_data_callback, edge_port);
1da177e4
LT		 1369
1370 /* decrement the number of credits we have by the number we just sent */
1371 edge_port->txCredits -= count;
d36a7712 1372 edge_port->port->icount.tx += count;
1da177e4 1373
1da177e4
LT		 1374 status = usb_submit_urb(urb, GFP_ATOMIC);
1375 if (status) {
1376 /* something went wrong */
22a416c4 1377 dev_err_console(edge_port->port,
03f0dbf7
AC		 1378 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1379 __func__, status);
cb8eaa8b 1380 edge_port->write_in_progress = false;
1da177e4
LT		 1381
1382 /* revert the credits as something bad happened. */
1383 edge_port->txCredits += count;
d36a7712 1384 edge_port->port->icount.tx -= count;
1da177e4 1385 }
984f6868
GKH		 1386 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1387 __func__, count, edge_port->txCredits, fifo->count);
1da177e4
LT		 1388
1389exit_send:
1390 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1391}
1392
1393
1394/*****************************************************************************
1395 * edge_write_room
03f0dbf7
AC		 1396 * this function is called by the tty driver when it wants to know how
1397 * many bytes of data we can accept for a specific port. If successful,
1398 * we return the amount of room that we have for this port (the txCredits)
1399 * otherwise we return a negative error number.
1da177e4 1400 *****************************************************************************/
95da310e 1401static int edge_write_room(struct tty_struct *tty)
1da177e4 1402{
95da310e 1403 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1404 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1405 int room;
1406 unsigned long flags;
1407
1da177e4 1408 if (edge_port == NULL)
d76f2f44 1409 return 0;
cb8eaa8b 1410 if (edge_port->closePending)
d76f2f44 1411 return 0;
1da177e4 1412
1da177e4 1413 if (!edge_port->open) {
984f6868 1414 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
d76f2f44 1415 return 0;
1da177e4
LT		 1416 }
1417
03f0dbf7 1418 /* total of both buffers is still txCredit */
1da177e4
LT		 1419 spin_lock_irqsave(&edge_port->ep_lock, flags);
1420 room = edge_port->txCredits - edge_port->txfifo.count;
1421 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1422
984f6868 1423 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1da177e4
LT		 1424 return room;
1425}
1426
1427
1428/*****************************************************************************
1429 * edge_chars_in_buffer
03f0dbf7
AC		 1430 * this function is called by the tty driver when it wants to know how
1431 * many bytes of data we currently have outstanding in the port (data that
1432 * has been written, but hasn't made it out the port yet)
1433 * If successful, we return the number of bytes left to be written in the
1434 * system,
1da177e4
LT		 1435 * Otherwise we return a negative error number.
1436 *****************************************************************************/
95da310e 1437static int edge_chars_in_buffer(struct tty_struct *tty)
1da177e4 1438{
95da310e 1439 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1440 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1441 int num_chars;
1442 unsigned long flags;
1443
1da177e4 1444 if (edge_port == NULL)
d76f2f44 1445 return 0;
cb8eaa8b 1446 if (edge_port->closePending)
d76f2f44 1447 return 0;
1da177e4
LT		 1448
1449 if (!edge_port->open) {
984f6868 1450 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
d76f2f44 1451 return 0;
1da177e4
LT		 1452 }
1453
1454 spin_lock_irqsave(&edge_port->ep_lock, flags);
03f0dbf7
AC		 1455 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1456 edge_port->txfifo.count;
1da177e4
LT		 1457 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1458 if (num_chars) {
1143832e 1459 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
1da177e4
LT		 1460 }
1461
1462 return num_chars;
1463}
1464
1465
1466/*****************************************************************************
1467 * SerialThrottle
1468 * this function is called by the tty driver when it wants to stop the data
1469 * being read from the port.
1470 *****************************************************************************/
95da310e 1471static void edge_throttle(struct tty_struct *tty)
1da177e4 1472{
95da310e 1473 struct usb_serial_port *port = tty->driver_data;
1da177e4 1474 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1475 int status;
1476
1da177e4
LT		 1477 if (edge_port == NULL)
1478 return;
1479
1480 if (!edge_port->open) {
984f6868 1481 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1da177e4
LT		 1482 return;
1483 }
1484
1da177e4
LT		 1485 /* if we are implementing XON/XOFF, send the stop character */
1486 if (I_IXOFF(tty)) {
1487 unsigned char stop_char = STOP_CHAR(tty);
03f0dbf7
AC		 1488 status = edge_write(tty, port, &stop_char, 1);
1489 if (status <= 0)
1da177e4 1490 return;
1da177e4
LT		 1491 }
1492
1493 /* if we are implementing RTS/CTS, toggle that line */
9db276f8 1494 if (C_CRTSCTS(tty)) {
1da177e4 1495 edge_port->shadowMCR &= ~MCR_RTS;
03f0dbf7
AC		 1496 status = send_cmd_write_uart_register(edge_port, MCR,
1497 edge_port->shadowMCR);
1498 if (status != 0)
1da177e4 1499 return;
1da177e4 1500 }
1da177e4
LT		 1501}
1502
1503
1504/*****************************************************************************
1505 * edge_unthrottle
03f0dbf7
AC		 1506 * this function is called by the tty driver when it wants to resume the
1507 * data being read from the port (called after SerialThrottle is called)
1da177e4 1508 *****************************************************************************/
95da310e 1509static void edge_unthrottle(struct tty_struct *tty)
1da177e4 1510{
95da310e 1511 struct usb_serial_port *port = tty->driver_data;
1da177e4 1512 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1513 int status;
1514
1da177e4
LT		 1515 if (edge_port == NULL)
1516 return;
1517
1518 if (!edge_port->open) {
984f6868 1519 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1da177e4
LT		 1520 return;
1521 }
1522
1da177e4
LT		 1523 /* if we are implementing XON/XOFF, send the start character */
1524 if (I_IXOFF(tty)) {
1525 unsigned char start_char = START_CHAR(tty);
95da310e
AC		 1526 status = edge_write(tty, port, &start_char, 1);
1527 if (status <= 0)
1da177e4 1528 return;
1da177e4 1529 }
1da177e4 1530 /* if we are implementing RTS/CTS, toggle that line */
9db276f8 1531 if (C_CRTSCTS(tty)) {
1da177e4 1532 edge_port->shadowMCR |= MCR_RTS;
03f0dbf7
AC		 1533 send_cmd_write_uart_register(edge_port, MCR,
1534 edge_port->shadowMCR);
1da177e4 1535 }
1da177e4
LT		 1536}
1537
1538
1539/*****************************************************************************
1540 * SerialSetTermios
03f0dbf7
AC		 1541 * this function is called by the tty driver when it wants to change
1542 * the termios structure
1da177e4 1543 *****************************************************************************/
95da310e
AC		 1544static void edge_set_termios(struct tty_struct *tty,
1545 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4
LT		 1546{
1547 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1548
1549 if (edge_port == NULL)
1550 return;
1551
1552 if (!edge_port->open) {
984f6868 1553 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1da177e4
LT		 1554 return;
1555 }
1556
1557 /* change the port settings to the new ones specified */
95da310e 1558 change_port_settings(tty, edge_port, old_termios);
1da177e4
LT		 1559}
1560
1561
1562/*****************************************************************************
1563 * get_lsr_info - get line status register info
1564 *
1565 * Purpose: Let user call ioctl() to get info when the UART physically
1566 * is emptied. On bus types like RS485, the transmitter must
1567 * release the bus after transmitting. This must be done when
1568 * the transmit shift register is empty, not be done when the
1569 * transmit holding register is empty. This functionality
03f0dbf7 1570 * allows an RS485 driver to be written in user space.
1da177e4 1571 *****************************************************************************/
03f0dbf7
AC		 1572static int get_lsr_info(struct edgeport_port *edge_port,
1573 unsigned int __user *value)
1da177e4
LT		 1574{
1575 unsigned int result = 0;
1576 unsigned long flags;
1577
1578 spin_lock_irqsave(&edge_port->ep_lock, flags);
1579 if (edge_port->maxTxCredits == edge_port->txCredits &&
1580 edge_port->txfifo.count == 0) {
984f6868 1581 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1da177e4
LT		 1582 result = TIOCSER_TEMT;
1583 }
1584 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1585
1586 if (copy_to_user(value, &result, sizeof(int)))
1587 return -EFAULT;
1588 return 0;
1589}
1590
20b9d177 1591static int edge_tiocmset(struct tty_struct *tty,
03f0dbf7 1592 unsigned int set, unsigned int clear)
1da177e4 1593{
95da310e 1594 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1595 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1596 unsigned int mcr;
1597
1da177e4
LT		 1598 mcr = edge_port->shadowMCR;
1599 if (set & TIOCM_RTS)
1600 mcr |= MCR_RTS;
1601 if (set & TIOCM_DTR)
1602 mcr |= MCR_DTR;
1603 if (set & TIOCM_LOOP)
1604 mcr |= MCR_LOOPBACK;
1605
1606 if (clear & TIOCM_RTS)
1607 mcr &= ~MCR_RTS;
1608 if (clear & TIOCM_DTR)
1609 mcr &= ~MCR_DTR;
1610 if (clear & TIOCM_LOOP)
1611 mcr &= ~MCR_LOOPBACK;
1612
1613 edge_port->shadowMCR = mcr;
1614
1615 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1616
1617 return 0;
1618}
1619
60b33c13 1620static int edge_tiocmget(struct tty_struct *tty)
1da177e4 1621{
95da310e 1622 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1623 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1624 unsigned int result = 0;
1625 unsigned int msr;
1626 unsigned int mcr;
1627
1da177e4
LT		 1628 msr = edge_port->shadowMSR;
1629 mcr = edge_port->shadowMCR;
1630 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1631 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1632 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1633 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1634 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1635 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1636
1da177e4
LT		 1637 return result;
1638}
1639
03f0dbf7
AC		 1640static int get_serial_info(struct edgeport_port *edge_port,
1641 struct serial_struct __user *retinfo)
1da177e4
LT		 1642{
1643 struct serial_struct tmp;
1644
1da177e4
LT		 1645 memset(&tmp, 0, sizeof(tmp));
1646
1647 tmp.type = PORT_16550A;
e5b1e206 1648 tmp.line = edge_port->port->minor;
1143832e 1649 tmp.port = edge_port->port->port_number;
1da177e4 1650 tmp.irq = 0;
1da177e4
LT		 1651 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1652 tmp.baud_base = 9600;
1653 tmp.close_delay = 5*HZ;
1654 tmp.closing_wait = 30*HZ;
1da177e4
LT		 1655
1656 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1657 return -EFAULT;
1658 return 0;
1659}
1660
1661
1da177e4
LT		 1662/*****************************************************************************
1663 * SerialIoctl
1664 * this function handles any ioctl calls to the driver
1665 *****************************************************************************/
00a0d0d6 1666static int edge_ioctl(struct tty_struct *tty,
95da310e 1667 unsigned int cmd, unsigned long arg)
1da177e4 1668{
95da310e 1669 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1670 DEFINE_WAIT(wait);
1671 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4 1672
1da177e4 1673 switch (cmd) {
03f0dbf7 1674 case TIOCSERGETLSR:
1143832e 1675 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
03f0dbf7
AC		 1676 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1677
1678 case TIOCGSERIAL:
1143832e 1679 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
03f0dbf7 1680 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1da177e4 1681 }
1da177e4
LT		 1682 return -ENOIOCTLCMD;
1683}
1684
1685
1686/*****************************************************************************
1687 * SerialBreak
1688 * this function sends a break to the port
1689 *****************************************************************************/
03f0dbf7 1690static void edge_break(struct tty_struct *tty, int break_state)
1da177e4 1691{
95da310e 1692 struct usb_serial_port *port = tty->driver_data;
1da177e4 1693 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
6e8cf775 1694 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1da177e4
LT		 1695 int status;
1696
232dce89
GB		 1697 if (!edge_serial->is_epic ||
1698 edge_serial->epic_descriptor.Supports.IOSPChase) {
6e8cf775 1699 /* flush and chase */
cb8eaa8b 1700 edge_port->chaseResponsePending = true;
6e8cf775 1701
984f6868 1702 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
03f0dbf7 1703 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
6e8cf775 1704 if (status == 0) {
03f0dbf7 1705 /* block until chase finished */
6e8cf775
GKH		 1706 block_until_chase_response(edge_port);
1707 } else {
cb8eaa8b 1708 edge_port->chaseResponsePending = false;
6e8cf775 1709 }
1da177e4
LT		 1710 }
1711
232dce89
GB		 1712 if (!edge_serial->is_epic ||
1713 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
6e8cf775 1714 if (break_state == -1) {
984f6868 1715 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
03f0dbf7
AC		 1716 status = send_iosp_ext_cmd(edge_port,
1717 IOSP_CMD_SET_BREAK, 0);
6e8cf775 1718 } else {
984f6868 1719 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
03f0dbf7
AC		 1720 status = send_iosp_ext_cmd(edge_port,
1721 IOSP_CMD_CLEAR_BREAK, 0);
6e8cf775 1722 }
03f0dbf7 1723 if (status)
984f6868 1724 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
03f0dbf7 1725 __func__);
1da177e4 1726 }
1da177e4
LT		 1727}
1728
1729
1730/*****************************************************************************
1731 * process_rcvd_data
1732 * this function handles the data received on the bulk in pipe.
1733 *****************************************************************************/
03f0dbf7
AC		 1734static void process_rcvd_data(struct edgeport_serial *edge_serial,
1735 unsigned char *buffer, __u16 bufferLength)
1da177e4 1736{
6b816378
JH		 1737 struct usb_serial *serial = edge_serial->serial;
1738 struct device *dev = &serial->dev->dev;
1da177e4
LT		 1739 struct usb_serial_port *port;
1740 struct edgeport_port *edge_port;
1da177e4
LT		 1741 __u16 lastBufferLength;
1742 __u16 rxLen;
1743
1da177e4
LT		 1744 lastBufferLength = bufferLength + 1;
1745
1746 while (bufferLength > 0) {
1747 /* failsafe incase we get a message that we don't understand */
1748 if (lastBufferLength == bufferLength) {
984f6868 1749 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1da177e4
LT		 1750 break;
1751 }
1752 lastBufferLength = bufferLength;
1753
1754 switch (edge_serial->rxState) {
03f0dbf7
AC		 1755 case EXPECT_HDR1:
1756 edge_serial->rxHeader1 = *buffer;
1757 ++buffer;
1758 --bufferLength;
1da177e4 1759
03f0dbf7
AC		 1760 if (bufferLength == 0) {
1761 edge_serial->rxState = EXPECT_HDR2;
1762 break;
1763 }
1764 /* otherwise, drop on through */
1765 case EXPECT_HDR2:
1766 edge_serial->rxHeader2 = *buffer;
1767 ++buffer;
1768 --bufferLength;
1769
984f6868
GKH		 1770 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1771 edge_serial->rxHeader1, edge_serial->rxHeader2);
03f0dbf7
AC		 1772 /* Process depending on whether this header is
1773 * data or status */
1774
1775 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1776 /* Decode this status header and go to
1777 * EXPECT_HDR1 (if we can process the status
1778 * with only 2 bytes), or go to EXPECT_HDR3 to
1779 * get the third byte. */
1780 edge_serial->rxPort =
1781 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1782 edge_serial->rxStatusCode =
1783 IOSP_GET_STATUS_CODE(
1784 edge_serial->rxHeader1);
1785
1786 if (!IOSP_STATUS_IS_2BYTE(
1787 edge_serial->rxStatusCode)) {
1788 /* This status needs additional bytes.
1789 * Save what we have and then wait for
1790 * more data.
1791 */
1792 edge_serial->rxStatusParam
1793 = edge_serial->rxHeader2;
1794 edge_serial->rxState = EXPECT_HDR3;
1da177e4
LT		 1795 break;
1796 }
03f0dbf7
AC		 1797 /* We have all the header bytes, process the
1798 status now */
1799 process_rcvd_status(edge_serial,
1800 edge_serial->rxHeader2, 0);
1801 edge_serial->rxState = EXPECT_HDR1;
1802 break;
1803 } else {
1804 edge_serial->rxPort =
1805 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1806 edge_serial->rxBytesRemaining =
1807 IOSP_GET_HDR_DATA_LEN(
1808 edge_serial->rxHeader1,
1809 edge_serial->rxHeader2);
984f6868
GKH		 1810 dev_dbg(dev, "%s - Data for Port %u Len %u\n",
1811 __func__,
1812 edge_serial->rxPort,
1813 edge_serial->rxBytesRemaining);
03f0dbf7
AC		 1814
1815 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1816 * ASSERT(DevExt->RxBytesRemaining <
1817 * IOSP_MAX_DATA_LENGTH);
1818 */
1da177e4 1819
03f0dbf7
AC		 1820 if (bufferLength == 0) {
1821 edge_serial->rxState = EXPECT_DATA;
1da177e4 1822 break;
1da177e4 1823 }
03f0dbf7
AC		 1824 /* Else, drop through */
1825 }
1826 case EXPECT_DATA: /* Expect data */
1827 if (bufferLength < edge_serial->rxBytesRemaining) {
1828 rxLen = bufferLength;
1829 /* Expect data to start next buffer */
1830 edge_serial->rxState = EXPECT_DATA;
1831 } else {
1832 /* BufLen >= RxBytesRemaining */
1833 rxLen = edge_serial->rxBytesRemaining;
1834 /* Start another header next time */
1835 edge_serial->rxState = EXPECT_HDR1;
1836 }
1da177e4 1837
03f0dbf7
AC		 1838 bufferLength -= rxLen;
1839 edge_serial->rxBytesRemaining -= rxLen;
1da177e4 1840
03f0dbf7
AC		 1841 /* spit this data back into the tty driver if this
1842 port is open */
6b816378
JH		 1843 if (rxLen && edge_serial->rxPort < serial->num_ports) {
1844 port = serial->port[edge_serial->rxPort];
03f0dbf7 1845 edge_port = usb_get_serial_port_data(port);
a868ee19 1846 if (edge_port && edge_port->open) {
2e124b4a
JS		 1847 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1848 __func__, rxLen,
1849 edge_serial->rxPort);
1850 edge_tty_recv(edge_port->port, buffer,
1851 rxLen);
d36a7712 1852 edge_port->port->icount.rx += rxLen;
1da177e4 1853 }
03f0dbf7 1854 }
6b816378 1855 buffer += rxLen;
03f0dbf7 1856 break;
1da177e4 1857
03f0dbf7
AC		 1858 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1859 edge_serial->rxHeader3 = *buffer;
1860 ++buffer;
1861 --bufferLength;
1862
1863 /* We have all the header bytes, process the
1864 status now */
1865 process_rcvd_status(edge_serial,
1866 edge_serial->rxStatusParam,
1867 edge_serial->rxHeader3);
1868 edge_serial->rxState = EXPECT_HDR1;
1869 break;
1da177e4
LT		 1870 }
1871 }
1872}
1873
1874
1875/*****************************************************************************
1876 * process_rcvd_status
03f0dbf7
AC		 1877 * this function handles the any status messages received on the
1878 * bulk in pipe.
1da177e4 1879 *****************************************************************************/
03f0dbf7
AC		 1880static void process_rcvd_status(struct edgeport_serial *edge_serial,
1881 __u8 byte2, __u8 byte3)
1da177e4
LT		 1882{
1883 struct usb_serial_port *port;
1884 struct edgeport_port *edge_port;
4a90f09b 1885 struct tty_struct *tty;
984f6868 1886 struct device *dev;
1da177e4
LT		 1887 __u8 code = edge_serial->rxStatusCode;
1888
1889 /* switch the port pointer to the one being currently talked about */
6b816378
JH		 1890 if (edge_serial->rxPort >= edge_serial->serial->num_ports)
1891 return;
1da177e4
LT		 1892 port = edge_serial->serial->port[edge_serial->rxPort];
1893 edge_port = usb_get_serial_port_data(port);
1894 if (edge_port == NULL) {
03f0dbf7
AC		 1895 dev_err(&edge_serial->serial->dev->dev,
1896 "%s - edge_port == NULL for port %d\n",
1897 __func__, edge_serial->rxPort);
1da177e4
LT		 1898 return;
1899 }
984f6868 1900 dev = &port->dev;
1da177e4
LT		 1901
1902 if (code == IOSP_EXT_STATUS) {
1903 switch (byte2) {
03f0dbf7
AC		 1904 case IOSP_EXT_STATUS_CHASE_RSP:
1905 /* we want to do EXT status regardless of port
1906 * open/closed */
984f6868
GKH		 1907 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1908 __func__, edge_serial->rxPort, byte3);
03f0dbf7
AC		 1909 /* Currently, the only EXT_STATUS is Chase, so process
1910 * here instead of one more call to one more subroutine
1911 * If/when more EXT_STATUS, there'll be more work to do
1912 * Also, we currently clear flag and close the port
1913 * regardless of content of above's Byte3.
1914 * We could choose to do something else when Byte3 says
1915 * Timeout on Chase from Edgeport, like wait longer in
1916 * block_until_chase_response, but for now we don't.
1917 */
1918 edge_port->chaseResponsePending = false;
1919 wake_up(&edge_port->wait_chase);
1920 return;
1da177e4 1921
03f0dbf7 1922 case IOSP_EXT_STATUS_RX_CHECK_RSP:
984f6868
GKH		 1923 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1924 __func__, edge_serial->rxPort, byte3);
03f0dbf7
AC		 1925 /* Port->RxCheckRsp = true; */
1926 return;
1da177e4
LT		 1927 }
1928 }
1929
1930 if (code == IOSP_STATUS_OPEN_RSP) {
1931 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1932 edge_port->maxTxCredits = edge_port->txCredits;
984f6868
GKH		 1933 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1934 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
03f0dbf7 1935 handle_new_msr(edge_port, byte2);
1da177e4 1936
03f0dbf7
AC		 1937 /* send the current line settings to the port so we are
1938 in sync with any further termios calls */
4a90f09b
AC		 1939 tty = tty_port_tty_get(&edge_port->port->port);
1940 if (tty) {
1941 change_port_settings(tty,
adc8d746 1942 edge_port, &tty->termios);
4a90f09b
AC		 1943 tty_kref_put(tty);
1944 }
1da177e4
LT		 1945
1946 /* we have completed the open */
cb8eaa8b
RK		 1947 edge_port->openPending = false;
1948 edge_port->open = true;
1da177e4
LT		 1949 wake_up(&edge_port->wait_open);
1950 return;
1951 }
1952
03f0dbf7
AC		 1953 /* If port is closed, silently discard all rcvd status. We can
1954 * have cases where buffered status is received AFTER the close
1955 * port command is sent to the Edgeport.
1956 */
1957 if (!edge_port->open || edge_port->closePending)
1da177e4 1958 return;
1da177e4
LT		 1959
1960 switch (code) {
03f0dbf7
AC		 1961 /* Not currently sent by Edgeport */
1962 case IOSP_STATUS_LSR:
984f6868
GKH		 1963 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1964 __func__, edge_serial->rxPort, byte2);
03f0dbf7
AC		 1965 handle_new_lsr(edge_port, false, byte2, 0);
1966 break;
1da177e4 1967
03f0dbf7 1968 case IOSP_STATUS_LSR_DATA:
984f6868
GKH		 1969 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1970 __func__, edge_serial->rxPort, byte2, byte3);
03f0dbf7
AC		 1971 /* byte2 is LSR Register */
1972 /* byte3 is broken data byte */
1973 handle_new_lsr(edge_port, true, byte2, byte3);
1974 break;
1975 /*
1976 * case IOSP_EXT_4_STATUS:
984f6868 1977 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
03f0dbf7
AC		 1978 * __func__, edge_serial->rxPort, byte2, byte3);
1979 * break;
1980 */
1981 case IOSP_STATUS_MSR:
984f6868
GKH		 1982 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1983 __func__, edge_serial->rxPort, byte2);
03f0dbf7
AC		 1984 /*
1985 * Process this new modem status and generate appropriate
1986 * events, etc, based on the new status. This routine
1987 * also saves the MSR in Port->ShadowMsr.
1988 */
1989 handle_new_msr(edge_port, byte2);
1990 break;
1da177e4 1991
03f0dbf7 1992 default:
984f6868 1993 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
03f0dbf7 1994 break;
1da177e4 1995 }
1da177e4
LT		 1996}
1997
1998
1999/*****************************************************************************
2000 * edge_tty_recv
2001 * this function passes data on to the tty flip buffer
2002 *****************************************************************************/
2e124b4a
JS		 2003static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
2004 int length)
1da177e4
LT		 2005{
2006 int cnt;
2007
05c7cd39 2008 cnt = tty_insert_flip_string(&port->port, data, length);
a108bfcb 2009 if (cnt < length) {
05c7cd39 2010 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
a108bfcb
AC		 2011 __func__, length - cnt);
2012 }
2013 data += cnt;
2014 length -= cnt;
1da177e4 2015
2e124b4a 2016 tty_flip_buffer_push(&port->port);
1da177e4
LT		 2017}
2018
2019
2020/*****************************************************************************
2021 * handle_new_msr
2022 * this function handles any change to the msr register for a port.
2023 *****************************************************************************/
2024static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2025{
2026 struct async_icount *icount;
2027
03f0dbf7
AC		 2028 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
2029 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
d36a7712 2030 icount = &edge_port->port->icount;
1da177e4
LT		 2031
2032 /* update input line counters */
03f0dbf7 2033 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1da177e4 2034 icount->cts++;
03f0dbf7 2035 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1da177e4 2036 icount->dsr++;
03f0dbf7 2037 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1da177e4 2038 icount->dcd++;
03f0dbf7 2039 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1da177e4 2040 icount->rng++;
8b8070d8 2041 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1da177e4
LT		 2042 }
2043
2044 /* Save the new modem status */
2045 edge_port->shadowMSR = newMsr & 0xf0;
1da177e4
LT		 2046}
2047
2048
2049/*****************************************************************************
2050 * handle_new_lsr
2051 * this function handles any change to the lsr register for a port.
2052 *****************************************************************************/
03f0dbf7
AC		 2053static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
2054 __u8 lsr, __u8 data)
1da177e4 2055{
03f0dbf7
AC		 2056 __u8 newLsr = (__u8) (lsr & (__u8)
2057 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2058 struct async_icount *icount;
1da177e4 2059
1da177e4
LT		 2060 edge_port->shadowLSR = lsr;
2061
2062 if (newLsr & LSR_BREAK) {
03f0dbf7
AC		 2063 /*
2064 * Parity and Framing errors only count if they
2065 * occur exclusive of a break being
2066 * received.
2067 */
1da177e4
LT		 2068 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2069 }
2070
2071 /* Place LSR data byte into Rx buffer */
2e124b4a
JS		 2072 if (lsrData)
2073 edge_tty_recv(edge_port->port, &data, 1);
2074
1da177e4 2075 /* update input line counters */
d36a7712 2076 icount = &edge_port->port->icount;
03f0dbf7 2077 if (newLsr & LSR_BREAK)
1da177e4 2078 icount->brk++;
03f0dbf7 2079 if (newLsr & LSR_OVER_ERR)
1da177e4 2080 icount->overrun++;
03f0dbf7 2081 if (newLsr & LSR_PAR_ERR)
1da177e4 2082 icount->parity++;
03f0dbf7 2083 if (newLsr & LSR_FRM_ERR)
1da177e4 2084 icount->frame++;
1da177e4
LT		 2085}
2086
2087
2088/****************************************************************************
2089 * sram_write
03f0dbf7 2090 * writes a number of bytes to the Edgeport device's sram starting at the
1da177e4
LT		 2091 * given address.
2092 * If successful returns the number of bytes written, otherwise it returns
2093 * a negative error number of the problem.
2094 ****************************************************************************/
03f0dbf7
AC		 2095static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2096 __u16 length, const __u8 *data)
1da177e4
LT		 2097{
2098 int result;
2099 __u16 current_length;
2100 unsigned char *transfer_buffer;
2101
984f6868 2102 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
1da177e4 2103
03f0dbf7 2104 transfer_buffer = kmalloc(64, GFP_KERNEL);
10c642d0 2105 if (!transfer_buffer)
1da177e4 2106 return -ENOMEM;
1da177e4
LT		 2107
2108 /* need to split these writes up into 64 byte chunks */
2109 result = 0;
2110 while (length > 0) {
03f0dbf7 2111 if (length > 64)
1da177e4 2112 current_length = 64;
03f0dbf7 2113 else
1da177e4 2114 current_length = length;
03f0dbf7 2115
984f6868 2116/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
03f0dbf7
AC		 2117 memcpy(transfer_buffer, data, current_length);
2118 result = usb_control_msg(serial->dev,
2119 usb_sndctrlpipe(serial->dev, 0),
2120 USB_REQUEST_ION_WRITE_RAM,
2121 0x40, addr, extAddr, transfer_buffer,
2122 current_length, 300);
1da177e4
LT		 2123 if (result < 0)
2124 break;
2125 length -= current_length;
2126 addr += current_length;
2127 data += current_length;
03f0dbf7 2128 }
1da177e4 2129
03f0dbf7 2130 kfree(transfer_buffer);
1da177e4
LT		 2131 return result;
2132}
2133
2134
2135/****************************************************************************
2136 * rom_write
2137 * writes a number of bytes to the Edgeport device's ROM starting at the
2138 * given address.
2139 * If successful returns the number of bytes written, otherwise it returns
2140 * a negative error number of the problem.
2141 ****************************************************************************/
03f0dbf7
AC		 2142static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2143 __u16 length, const __u8 *data)
1da177e4
LT		 2144{
2145 int result;
2146 __u16 current_length;
2147 unsigned char *transfer_buffer;
2148
03f0dbf7 2149 transfer_buffer = kmalloc(64, GFP_KERNEL);
10c642d0 2150 if (!transfer_buffer)
1da177e4 2151 return -ENOMEM;
1da177e4
LT		 2152
2153 /* need to split these writes up into 64 byte chunks */
2154 result = 0;
2155 while (length > 0) {
03f0dbf7 2156 if (length > 64)
1da177e4 2157 current_length = 64;
03f0dbf7 2158 else
1da177e4 2159 current_length = length;
03f0dbf7
AC		 2160 memcpy(transfer_buffer, data, current_length);
2161 result = usb_control_msg(serial->dev,
2162 usb_sndctrlpipe(serial->dev, 0),
2163 USB_REQUEST_ION_WRITE_ROM, 0x40,
2164 addr, extAddr,
2165 transfer_buffer, current_length, 300);
1da177e4
LT		 2166 if (result < 0)
2167 break;
2168 length -= current_length;
2169 addr += current_length;
2170 data += current_length;
03f0dbf7 2171 }
1da177e4 2172
03f0dbf7 2173 kfree(transfer_buffer);
1da177e4
LT		 2174 return result;
2175}
2176
2177
2178/****************************************************************************
2179 * rom_read
2180 * reads a number of bytes from the Edgeport device starting at the given
2181 * address.
3c0e25d8 2182 * Returns zero on success or a negative error number.
1da177e4 2183 ****************************************************************************/
03f0dbf7
AC		 2184static int rom_read(struct usb_serial *serial, __u16 extAddr,
2185 __u16 addr, __u16 length, __u8 *data)
1da177e4
LT		 2186{
2187 int result;
2188 __u16 current_length;
2189 unsigned char *transfer_buffer;
2190
03f0dbf7 2191 transfer_buffer = kmalloc(64, GFP_KERNEL);
10c642d0 2192 if (!transfer_buffer)
1da177e4 2193 return -ENOMEM;
1da177e4
LT		 2194
2195 /* need to split these reads up into 64 byte chunks */
2196 result = 0;
2197 while (length > 0) {
03f0dbf7 2198 if (length > 64)
1da177e4 2199 current_length = 64;
03f0dbf7 2200 else
1da177e4 2201 current_length = length;
03f0dbf7
AC		 2202 result = usb_control_msg(serial->dev,
2203 usb_rcvctrlpipe(serial->dev, 0),
2204 USB_REQUEST_ION_READ_ROM,
2205 0xC0, addr, extAddr, transfer_buffer,
2206 current_length, 300);
3c0e25d8
JH		 2207 if (result < current_length) {
2208 if (result >= 0)
2209 result = -EIO;
1da177e4 2210 break;
3c0e25d8 2211 }
03f0dbf7 2212 memcpy(data, transfer_buffer, current_length);
1da177e4
LT		 2213 length -= current_length;
2214 addr += current_length;
2215 data += current_length;
3c0e25d8
JH		 2216
2217 result = 0;
03f0dbf7 2218 }
1da177e4 2219
03f0dbf7 2220 kfree(transfer_buffer);
1da177e4
LT		 2221 return result;
2222}
2223
2224
2225/****************************************************************************
2226 * send_iosp_ext_cmd
2227 * Is used to send a IOSP message to the Edgeport device
2228 ****************************************************************************/
03f0dbf7
AC		 2229static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2230 __u8 command, __u8 param)
1da177e4
LT		 2231{
2232 unsigned char *buffer;
2233 unsigned char *currentCommand;
2234 int length = 0;
2235 int status = 0;
2236
03f0dbf7 2237 buffer = kmalloc(10, GFP_ATOMIC);
10c642d0 2238 if (!buffer)
1da177e4 2239 return -ENOMEM;
1da177e4
LT		 2240
2241 currentCommand = buffer;
2242
1143832e
GKH		 2243 MAKE_CMD_EXT_CMD(&currentCommand, &length, edge_port->port->port_number,
2244 command, param);
1da177e4 2245
03f0dbf7 2246 status = write_cmd_usb(edge_port, buffer, length);
1da177e4
LT		 2247 if (status) {
2248 /* something bad happened, let's free up the memory */
2249 kfree(buffer);
2250 }
2251
2252 return status;
2253}
2254
2255
2256/*****************************************************************************
2257 * write_cmd_usb
2258 * this function writes the given buffer out to the bulk write endpoint.
2259 *****************************************************************************/
03f0dbf7
AC		 2260static int write_cmd_usb(struct edgeport_port *edge_port,
2261 unsigned char *buffer, int length)
1da177e4 2262{
03f0dbf7
AC		 2263 struct edgeport_serial *edge_serial =
2264 usb_get_serial_data(edge_port->port->serial);
984f6868 2265 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 2266 int status = 0;
2267 struct urb *urb;
1da177e4 2268
59d33f2f 2269 usb_serial_debug_data(dev, __func__, length, buffer);
1da177e4
LT		 2270
2271 /* Allocate our next urb */
03f0dbf7 2272 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 2273 if (!urb)
2274 return -ENOMEM;
2275
96c706ed 2276 atomic_inc(&CmdUrbs);
984f6868
GKH		 2277 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2278 __func__, urb, atomic_read(&CmdUrbs));
1da177e4 2279
03f0dbf7
AC		 2280 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2281 usb_sndbulkpipe(edge_serial->serial->dev,
2282 edge_serial->bulk_out_endpoint),
2283 buffer, length, edge_bulk_out_cmd_callback, edge_port);
1da177e4 2284
cb8eaa8b 2285 edge_port->commandPending = true;
1da177e4
LT		 2286 status = usb_submit_urb(urb, GFP_ATOMIC);
2287
2288 if (status) {
2289 /* something went wrong */
984f6868
GKH		 2290 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2291 __func__, status);
1da177e4 2292 usb_free_urb(urb);
96c706ed 2293 atomic_dec(&CmdUrbs);
1da177e4
LT		 2294 return status;
2295 }
2296
1da177e4 2297#if 0
03f0dbf7 2298 wait_event(&edge_port->wait_command, !edge_port->commandPending);
1da177e4 2299
cb8eaa8b 2300 if (edge_port->commandPending) {
1da177e4 2301 /* command timed out */
984f6868 2302 dev_dbg(dev, "%s - command timed out\n", __func__);
1da177e4
LT		 2303 status = -EINVAL;
2304 }
2305#endif
2306 return status;
2307}
2308
2309
2310/*****************************************************************************
2311 * send_cmd_write_baud_rate
2312 * this function sends the proper command to change the baud rate of the
2313 * specified port.
2314 *****************************************************************************/
03f0dbf7
AC		 2315static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2316 int baudRate)
1da177e4 2317{
03f0dbf7
AC		 2318 struct edgeport_serial *edge_serial =
2319 usb_get_serial_data(edge_port->port->serial);
984f6868 2320 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 2321 unsigned char *cmdBuffer;
2322 unsigned char *currCmd;
2323 int cmdLen = 0;
2324 int divisor;
2325 int status;
1143832e 2326 u32 number = edge_port->port->port_number;
1da177e4 2327
bc71e479
AK		 2328 if (edge_serial->is_epic &&
2329 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
1143832e
GKH		 2330 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2331 baudRate);
6e8cf775
GKH		 2332 return 0;
2333 }
2334
1143832e 2335 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
1da177e4 2336
984f6868 2337 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
1da177e4 2338 if (status) {
984f6868 2339 dev_err(dev, "%s - bad baud rate\n", __func__);
1da177e4
LT		 2340 return status;
2341 }
2342
03f0dbf7
AC		 2343 /* Alloc memory for the string of commands. */
2344 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
10c642d0 2345 if (!cmdBuffer)
1da177e4 2346 return -ENOMEM;
10c642d0 2347
1da177e4
LT		 2348 currCmd = cmdBuffer;
2349
03f0dbf7
AC		 2350 /* Enable access to divisor latch */
2351 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
1da177e4 2352
03f0dbf7
AC		 2353 /* Write the divisor itself */
2354 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2355 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
1da177e4 2356
03f0dbf7
AC		 2357 /* Restore original value to disable access to divisor latch */
2358 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2359 edge_port->shadowLCR);
1da177e4 2360
03f0dbf7 2361 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
1da177e4
LT		 2362 if (status) {
2363 /* something bad happened, let's free up the memory */
03f0dbf7 2364 kfree(cmdBuffer);
1da177e4
LT		 2365 }
2366
2367 return status;
2368}
2369
2370
2371/*****************************************************************************
2372 * calc_baud_rate_divisor
2373 * this function calculates the proper baud rate divisor for the specified
2374 * baud rate.
2375 *****************************************************************************/
984f6868 2376static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
1da177e4
LT		 2377{
2378 int i;
2379 __u16 custom;
2380
52950ed4 2381 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
03f0dbf7 2382 if (divisor_table[i].BaudRate == baudrate) {
1da177e4
LT		 2383 *divisor = divisor_table[i].Divisor;
2384 return 0;
2385 }
2386 }
2387
03f0dbf7
AC		 2388 /* We have tried all of the standard baud rates
2389 * lets try to calculate the divisor for this baud rate
2390 * Make sure the baud rate is reasonable */
1da177e4 2391 if (baudrate > 50 && baudrate < 230400) {
03f0dbf7 2392 /* get divisor */
1da177e4
LT		 2393 custom = (__u16)((230400L + baudrate/2) / baudrate);
2394
2395 *divisor = custom;
2396
984f6868 2397 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
1da177e4
LT		 2398 return 0;
2399 }
2400
2401 return -1;
2402}
2403
2404
2405/*****************************************************************************
2406 * send_cmd_write_uart_register
fd589a8f 2407 * this function builds up a uart register message and sends to the device.
1da177e4 2408 *****************************************************************************/
03f0dbf7
AC		 2409static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2410 __u8 regNum, __u8 regValue)
1da177e4 2411{
03f0dbf7
AC		 2412 struct edgeport_serial *edge_serial =
2413 usb_get_serial_data(edge_port->port->serial);
984f6868 2414 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 2415 unsigned char *cmdBuffer;
2416 unsigned char *currCmd;
2417 unsigned long cmdLen = 0;
2418 int status;
2419
984f6868
GKH		 2420 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2421 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
1da177e4 2422
bc71e479
AK		 2423 if (edge_serial->is_epic &&
2424 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2425 regNum == MCR) {
984f6868 2426 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
6e8cf775
GKH		 2427 return 0;
2428 }
2429
bc71e479
AK		 2430 if (edge_serial->is_epic &&
2431 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2432 regNum == LCR) {
984f6868 2433 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
6e8cf775
GKH		 2434 return 0;
2435 }
2436
03f0dbf7
AC		 2437 /* Alloc memory for the string of commands. */
2438 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2439 if (cmdBuffer == NULL)
1da177e4 2440 return -ENOMEM;
1da177e4
LT		 2441
2442 currCmd = cmdBuffer;
2443
03f0dbf7 2444 /* Build a cmd in the buffer to write the given register */
1143832e
GKH		 2445 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2446 regNum, regValue);
1da177e4
LT		 2447
2448 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2449 if (status) {
2450 /* something bad happened, let's free up the memory */
03f0dbf7 2451 kfree(cmdBuffer);
1da177e4
LT		 2452 }
2453
2454 return status;
2455}
2456
2457
2458/*****************************************************************************
2459 * change_port_settings
03f0dbf7
AC		 2460 * This routine is called to set the UART on the device to match the
2461 * specified new settings.
1da177e4 2462 *****************************************************************************/
95da310e
AC		 2463
2464static void change_port_settings(struct tty_struct *tty,
2465 struct edgeport_port *edge_port, struct ktermios *old_termios)
1da177e4 2466{
984f6868 2467 struct device *dev = &edge_port->port->dev;
03f0dbf7
AC		 2468 struct edgeport_serial *edge_serial =
2469 usb_get_serial_data(edge_port->port->serial);
1da177e4
LT		 2470 int baud;
2471 unsigned cflag;
2472 __u8 mask = 0xff;
2473 __u8 lData;
2474 __u8 lParity;
2475 __u8 lStop;
2476 __u8 rxFlow;
2477 __u8 txFlow;
2478 int status;
2479
cb8eaa8b
RK		 2480 if (!edge_port->open &&
2481 !edge_port->openPending) {
984f6868 2482 dev_dbg(dev, "%s - port not opened\n", __func__);
1da177e4
LT		 2483 return;
2484 }
2485
adc8d746 2486 cflag = tty->termios.c_cflag;
1da177e4
LT		 2487
2488 switch (cflag & CSIZE) {
03f0dbf7
AC		 2489 case CS5:
2490 lData = LCR_BITS_5; mask = 0x1f;
984f6868 2491 dev_dbg(dev, "%s - data bits = 5\n", __func__);
03f0dbf7
AC		 2492 break;
2493 case CS6:
2494 lData = LCR_BITS_6; mask = 0x3f;
984f6868 2495 dev_dbg(dev, "%s - data bits = 6\n", __func__);
03f0dbf7
AC		 2496 break;
2497 case CS7:
2498 lData = LCR_BITS_7; mask = 0x7f;
984f6868 2499 dev_dbg(dev, "%s - data bits = 7\n", __func__);
03f0dbf7
AC		 2500 break;
2501 default:
2502 case CS8:
2503 lData = LCR_BITS_8;
984f6868 2504 dev_dbg(dev, "%s - data bits = 8\n", __func__);
03f0dbf7 2505 break;
1da177e4
LT		 2506 }
2507
2508 lParity = LCR_PAR_NONE;
2509 if (cflag & PARENB) {
2510 if (cflag & CMSPAR) {
2511 if (cflag & PARODD) {
2512 lParity = LCR_PAR_MARK;
984f6868 2513 dev_dbg(dev, "%s - parity = mark\n", __func__);
1da177e4
LT		 2514 } else {
2515 lParity = LCR_PAR_SPACE;
984f6868 2516 dev_dbg(dev, "%s - parity = space\n", __func__);
1da177e4
LT		 2517 }
2518 } else if (cflag & PARODD) {
2519 lParity = LCR_PAR_ODD;
984f6868 2520 dev_dbg(dev, "%s - parity = odd\n", __func__);
1da177e4
LT		 2521 } else {
2522 lParity = LCR_PAR_EVEN;
984f6868 2523 dev_dbg(dev, "%s - parity = even\n", __func__);
1da177e4
LT		 2524 }
2525 } else {
984f6868 2526 dev_dbg(dev, "%s - parity = none\n", __func__);
1da177e4
LT		 2527 }
2528
2529 if (cflag & CSTOPB) {
2530 lStop = LCR_STOP_2;
984f6868 2531 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
1da177e4
LT		 2532 } else {
2533 lStop = LCR_STOP_1;
984f6868 2534 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
1da177e4
LT		 2535 }
2536
2537 /* figure out the flow control settings */
2538 rxFlow = txFlow = 0x00;
2539 if (cflag & CRTSCTS) {
2540 rxFlow |= IOSP_RX_FLOW_RTS;
2541 txFlow |= IOSP_TX_FLOW_CTS;
984f6868 2542 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
1da177e4 2543 } else {
984f6868 2544 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
1da177e4
LT		 2545 }
2546
03f0dbf7
AC		 2547 /* if we are implementing XON/XOFF, set the start and stop character
2548 in the device */
1da177e4
LT		 2549 if (I_IXOFF(tty) || I_IXON(tty)) {
2550 unsigned char stop_char = STOP_CHAR(tty);
2551 unsigned char start_char = START_CHAR(tty);
2552
232dce89
GB		 2553 if (!edge_serial->is_epic ||
2554 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
03f0dbf7
AC		 2555 send_iosp_ext_cmd(edge_port,
2556 IOSP_CMD_SET_XON_CHAR, start_char);
2557 send_iosp_ext_cmd(edge_port,
2558 IOSP_CMD_SET_XOFF_CHAR, stop_char);
6e8cf775 2559 }
1da177e4
LT		 2560
2561 /* if we are implementing INBOUND XON/XOFF */
2562 if (I_IXOFF(tty)) {
2563 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
984f6868
GKH		 2564 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2565 __func__, start_char, stop_char);
1da177e4 2566 } else {
984f6868 2567 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
1da177e4
LT		 2568 }
2569
2570 /* if we are implementing OUTBOUND XON/XOFF */
2571 if (I_IXON(tty)) {
2572 txFlow |= IOSP_TX_FLOW_XON_XOFF;
984f6868
GKH		 2573 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2574 __func__, start_char, stop_char);
1da177e4 2575 } else {
984f6868 2576 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
1da177e4
LT		 2577 }
2578 }
2579
2580 /* Set flow control to the configured value */
232dce89
GB		 2581 if (!edge_serial->is_epic ||
2582 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
6e8cf775 2583 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
232dce89
GB		 2584 if (!edge_serial->is_epic ||
2585 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
6e8cf775 2586 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
1da177e4
LT		 2587
2588
2589 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2590 edge_port->shadowLCR |= (lData | lParity | lStop);
2591
2592 edge_port->validDataMask = mask;
2593
2594 /* Send the updated LCR value to the EdgePort */
03f0dbf7
AC		 2595 status = send_cmd_write_uart_register(edge_port, LCR,
2596 edge_port->shadowLCR);
2597 if (status != 0)
1da177e4 2598 return;
1da177e4
LT		 2599
2600 /* set up the MCR register and send it to the EdgePort */
2601 edge_port->shadowMCR = MCR_MASTER_IE;
03f0dbf7 2602 if (cflag & CBAUD)
1da177e4 2603 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
03f0dbf7
AC		 2604
2605 status = send_cmd_write_uart_register(edge_port, MCR,
2606 edge_port->shadowMCR);
2607 if (status != 0)
1da177e4 2608 return;
1da177e4
LT		 2609
2610 /* Determine divisor based on baud rate */
2611 baud = tty_get_baud_rate(tty);
2612 if (!baud) {
2613 /* pick a default, any default... */
2614 baud = 9600;
2615 }
2616
984f6868 2617 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
03f0dbf7 2618 status = send_cmd_write_baud_rate(edge_port, baud);
6ce073bd
AC		 2619 if (status == -1) {
2620 /* Speed change was not possible - put back the old speed */
2621 baud = tty_termios_baud_rate(old_termios);
2622 tty_encode_baud_rate(tty, baud, baud);
2623 }
1da177e4
LT		 2624}
2625
2626
2627/****************************************************************************
2628 * unicode_to_ascii
2629 * Turns a string from Unicode into ASCII.
2630 * Doesn't do a good job with any characters that are outside the normal
2631 * ASCII range, but it's only for debugging...
2632 * NOTE: expects the unicode in LE format
2633 ****************************************************************************/
03f0dbf7
AC		 2634static void unicode_to_ascii(char *string, int buflen,
2635 __le16 *unicode, int unicode_size)
1da177e4
LT		 2636{
2637 int i;
2638
ad93375a 2639 if (buflen <= 0) /* never happens, but... */
1da177e4 2640 return;
ad93375a 2641 --buflen; /* space for nul */
1da177e4 2642
ad93375a
PZ		 2643 for (i = 0; i < unicode_size; i++) {
2644 if (i >= buflen)
2645 break;
1da177e4 2646 string[i] = (char)(le16_to_cpu(unicode[i]));
ad93375a
PZ		 2647 }
2648 string[i] = 0x00;
1da177e4
LT		 2649}
2650
2651
2652/****************************************************************************
2653 * get_manufacturing_desc
03f0dbf7 2654 * reads in the manufacturing descriptor and stores it into the serial
1da177e4
LT		 2655 * structure.
2656 ****************************************************************************/
03f0dbf7 2657static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
1da177e4 2658{
984f6868 2659 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 2660 int response;
2661
984f6868 2662 dev_dbg(dev, "getting manufacturer descriptor\n");
1da177e4 2663
03f0dbf7
AC		 2664 response = rom_read(edge_serial->serial,
2665 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2666 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2667 EDGE_MANUF_DESC_LEN,
2668 (__u8 *)(&edge_serial->manuf_descriptor));
1da177e4 2669
3c0e25d8
JH		 2670 if (response < 0) {
2671 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2672 response);
2673 } else {
1da177e4 2674 char string[30];
984f6868
GKH		 2675 dev_dbg(dev, "**Manufacturer Descriptor\n");
2676 dev_dbg(dev, " RomSize: %dK\n",
03f0dbf7 2677 edge_serial->manuf_descriptor.RomSize);
984f6868 2678 dev_dbg(dev, " RamSize: %dK\n",
03f0dbf7 2679 edge_serial->manuf_descriptor.RamSize);
984f6868 2680 dev_dbg(dev, " CpuRev: %d\n",
03f0dbf7 2681 edge_serial->manuf_descriptor.CpuRev);
984f6868 2682 dev_dbg(dev, " BoardRev: %d\n",
03f0dbf7 2683 edge_serial->manuf_descriptor.BoardRev);
984f6868 2684 dev_dbg(dev, " NumPorts: %d\n",
03f0dbf7 2685 edge_serial->manuf_descriptor.NumPorts);
984f6868 2686 dev_dbg(dev, " DescDate: %d/%d/%d\n",
03f0dbf7
AC		 2687 edge_serial->manuf_descriptor.DescDate[0],
2688 edge_serial->manuf_descriptor.DescDate[1],
2689 edge_serial->manuf_descriptor.DescDate[2]+1900);
4bc203d9 2690 unicode_to_ascii(string, sizeof(string),
03f0dbf7
AC		 2691 edge_serial->manuf_descriptor.SerialNumber,
2692 edge_serial->manuf_descriptor.SerNumLength/2);
984f6868 2693 dev_dbg(dev, " SerialNumber: %s\n", string);
4bc203d9 2694 unicode_to_ascii(string, sizeof(string),
03f0dbf7
AC		 2695 edge_serial->manuf_descriptor.AssemblyNumber,
2696 edge_serial->manuf_descriptor.AssemblyNumLength/2);
984f6868 2697 dev_dbg(dev, " AssemblyNumber: %s\n", string);
4bc203d9 2698 unicode_to_ascii(string, sizeof(string),
ad93375a
PZ		 2699 edge_serial->manuf_descriptor.OemAssyNumber,
2700 edge_serial->manuf_descriptor.OemAssyNumLength/2);
984f6868
GKH		 2701 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2702 dev_dbg(dev, " UartType: %d\n",
03f0dbf7 2703 edge_serial->manuf_descriptor.UartType);
984f6868 2704 dev_dbg(dev, " IonPid: %d\n",
03f0dbf7 2705 edge_serial->manuf_descriptor.IonPid);
984f6868 2706 dev_dbg(dev, " IonConfig: %d\n",
03f0dbf7 2707 edge_serial->manuf_descriptor.IonConfig);
1da177e4
LT		 2708 }
2709}
2710
2711
2712/****************************************************************************
2713 * get_boot_desc
03f0dbf7 2714 * reads in the bootloader descriptor and stores it into the serial
1da177e4
LT		 2715 * structure.
2716 ****************************************************************************/
03f0dbf7 2717static void get_boot_desc(struct edgeport_serial *edge_serial)
1da177e4 2718{
984f6868 2719 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 2720 int response;
2721
984f6868 2722 dev_dbg(dev, "getting boot descriptor\n");
1da177e4 2723
03f0dbf7
AC		 2724 response = rom_read(edge_serial->serial,
2725 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2726 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2727 EDGE_BOOT_DESC_LEN,
2728 (__u8 *)(&edge_serial->boot_descriptor));
1da177e4 2729
3c0e25d8
JH		 2730 if (response < 0) {
2731 dev_err(dev, "error in getting boot descriptor: %d\n",
2732 response);
2733 } else {
984f6868
GKH		 2734 dev_dbg(dev, "**Boot Descriptor:\n");
2735 dev_dbg(dev, " BootCodeLength: %d\n",
2736 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2737 dev_dbg(dev, " MajorVersion: %d\n",
03f0dbf7 2738 edge_serial->boot_descriptor.MajorVersion);
984f6868 2739 dev_dbg(dev, " MinorVersion: %d\n",
03f0dbf7 2740 edge_serial->boot_descriptor.MinorVersion);
984f6868 2741 dev_dbg(dev, " BuildNumber: %d\n",
03f0dbf7 2742 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
984f6868 2743 dev_dbg(dev, " Capabilities: 0x%x\n",
03f0dbf7 2744 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
984f6868 2745 dev_dbg(dev, " UConfig0: %d\n",
03f0dbf7 2746 edge_serial->boot_descriptor.UConfig0);
984f6868 2747 dev_dbg(dev, " UConfig1: %d\n",
03f0dbf7 2748 edge_serial->boot_descriptor.UConfig1);
1da177e4
LT		 2749 }
2750}
2751
2752
2753/****************************************************************************
2754 * load_application_firmware
2755 * This is called to load the application firmware to the device
2756 ****************************************************************************/
03f0dbf7 2757static void load_application_firmware(struct edgeport_serial *edge_serial)
1da177e4 2758{
984f6868 2759 struct device *dev = &edge_serial->serial->dev->dev;
5b9ea932
JS		 2760 const struct ihex_binrec *rec;
2761 const struct firmware *fw;
2762 const char *fw_name;
2763 const char *fw_info;
1da177e4 2764 int response;
5b9ea932
JS		 2765 __u32 Operaddr;
2766 __u16 build;
1da177e4
LT		 2767
2768 switch (edge_serial->product_info.iDownloadFile) {
2769 case EDGE_DOWNLOAD_FILE_I930:
5b9ea932
JS		 2770 fw_info = "downloading firmware version (930)";
2771 fw_name = "edgeport/down.fw";
1da177e4
LT		 2772 break;
2773
2774 case EDGE_DOWNLOAD_FILE_80251:
5b9ea932
JS		 2775 fw_info = "downloading firmware version (80251)";
2776 fw_name = "edgeport/down2.fw";
1da177e4
LT		 2777 break;
2778
2779 case EDGE_DOWNLOAD_FILE_NONE:
984f6868 2780 dev_dbg(dev, "No download file specified, skipping download\n");
1da177e4
LT		 2781 return;
2782
2783 default:
2784 return;
2785 }
2786
5b9ea932
JS		 2787 response = request_ihex_firmware(&fw, fw_name,
2788 &edge_serial->serial->dev->dev);
2789 if (response) {
984f6868 2790 dev_err(dev, "Failed to load image \"%s\" err %d\n",
5b9ea932
JS		 2791 fw_name, response);
2792 return;
2793 }
2794
2795 rec = (const struct ihex_binrec *)fw->data;
2796 build = (rec->data[2] << 8) | rec->data[3];
2797
984f6868 2798 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
5b9ea932 2799
271c1150
BM		 2800 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2801 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
5b9ea932 2802 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
1da177e4 2803
5b9ea932
JS		 2804 for (rec = ihex_next_binrec(rec); rec;
2805 rec = ihex_next_binrec(rec)) {
2806 Operaddr = be32_to_cpu(rec->addr);
2807 response = sram_write(edge_serial->serial,
2808 Operaddr >> 16,
2809 Operaddr & 0xFFFF,
2810 be16_to_cpu(rec->len),
2811 &rec->data[0]);
1da177e4 2812 if (response < 0) {
5b9ea932
JS		 2813 dev_err(&edge_serial->serial->dev->dev,
2814 "sram_write failed (%x, %x, %d)\n",
2815 Operaddr >> 16, Operaddr & 0xFFFF,
2816 be16_to_cpu(rec->len));
1da177e4
LT		 2817 break;
2818 }
2819 }
2820
984f6868
GKH		 2821 dev_dbg(dev, "sending exec_dl_code\n");
2822 response = usb_control_msg (edge_serial->serial->dev,
2823 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2824 USB_REQUEST_ION_EXEC_DL_CODE,
1da177e4
LT		 2825 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2826
5b9ea932 2827 release_firmware(fw);
1da177e4
LT		 2828}
2829
2830
2831/****************************************************************************
2832 * edge_startup
2833 ****************************************************************************/
03f0dbf7 2834static int edge_startup(struct usb_serial *serial)
1da177e4
LT		 2835{
2836 struct edgeport_serial *edge_serial;
1da177e4 2837 struct usb_device *dev;
984f6868 2838 struct device *ddev = &serial->dev->dev;
c27f3efc 2839 int i;
6e8cf775 2840 int response;
cb8eaa8b
RK		 2841 bool interrupt_in_found;
2842 bool bulk_in_found;
2843 bool bulk_out_found;
4f37fa54
JH		 2844 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2845 EDGE_COMPATIBILITY_MASK1,
2846 EDGE_COMPATIBILITY_MASK2 };
1da177e4
LT		 2847
2848 dev = serial->dev;
2849
2850 /* create our private serial structure */
80b6ca48 2851 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
10c642d0 2852 if (!edge_serial)
1da177e4 2853 return -ENOMEM;
10c642d0 2854
1da177e4
LT		 2855 spin_lock_init(&edge_serial->es_lock);
2856 edge_serial->serial = serial;
2857 usb_set_serial_data(serial, edge_serial);
2858
2859 /* get the name for the device from the device */
f10718f5 2860 i = usb_string(dev, dev->descriptor.iManufacturer,
ad93375a 2861 &edge_serial->name[0], MAX_NAME_LEN+1);
f10718f5
DC		 2862 if (i < 0)
2863 i = 0;
ad93375a 2864 edge_serial->name[i++] = ' ';
f10718f5 2865 usb_string(dev, dev->descriptor.iProduct,
ad93375a 2866 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
1da177e4
LT		 2867
2868 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2869
6e8cf775 2870 /* Read the epic descriptor */
e4457d97 2871 if (get_epic_descriptor(edge_serial) < 0) {
6e8cf775
GKH		 2872 /* memcpy descriptor to Supports structures */
2873 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2874 sizeof(struct edge_compatibility_bits));
1da177e4 2875
6e8cf775 2876 /* get the manufacturing descriptor for this device */
03f0dbf7 2877 get_manufacturing_desc(edge_serial);
1da177e4 2878
6e8cf775 2879 /* get the boot descriptor */
03f0dbf7 2880 get_boot_desc(edge_serial);
6e8cf775
GKH		 2881
2882 get_product_info(edge_serial);
2883 }
1da177e4
LT		 2884
2885 /* set the number of ports from the manufacturing description */
2886 /* serial->num_ports = serial->product_info.NumPorts; */
6e8cf775
GKH		 2887 if ((!edge_serial->is_epic) &&
2888 (edge_serial->product_info.NumPorts != serial->num_ports)) {
984f6868
GKH		 2889 dev_warn(ddev,
2890 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
6e8cf775
GKH		 2891 edge_serial->product_info.NumPorts,
2892 serial->num_ports);
1da177e4
LT		 2893 }
2894
984f6868 2895 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
1da177e4 2896
6e8cf775
GKH		 2897 /* If not an EPiC device */
2898 if (!edge_serial->is_epic) {
2899 /* now load the application firmware into this device */
03f0dbf7 2900 load_application_firmware(edge_serial);
1da177e4 2901
984f6868 2902 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
1da177e4 2903
6e8cf775 2904 /* Check current Edgeport EEPROM and update if necessary */
03f0dbf7 2905 update_edgeport_E2PROM(edge_serial);
1da177e4 2906
984f6868 2907 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
6e8cf775
GKH		 2908
2909 /* set the configuration to use #1 */
984f6868 2910/* dev_dbg(ddev, "set_configuration 1\n"); */
03f0dbf7 2911/* usb_set_configuration (dev, 1); */
6e8cf775 2912 }
984f6868 2913 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
5b9ea932
JS		 2914 edge_serial->product_info.FirmwareMajorVersion,
2915 edge_serial->product_info.FirmwareMinorVersion,
2916 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
1da177e4 2917
03f0dbf7 2918 /* we set up the pointers to the endpoints in the edge_open function,
1da177e4
LT		 2919 * as the structures aren't created yet. */
2920
6e8cf775
GKH		 2921 response = 0;
2922
2923 if (edge_serial->is_epic) {
17e80317
JH		 2924 struct usb_host_interface *alt;
2925
2926 alt = serial->interface->cur_altsetting;
2927
03f0dbf7
AC		 2928 /* EPIC thing, set up our interrupt polling now and our read
2929 * urb, so that the device knows it really is connected. */
cb8eaa8b 2930 interrupt_in_found = bulk_in_found = bulk_out_found = false;
17e80317 2931 for (i = 0; i < alt->desc.bNumEndpoints; ++i) {
6e8cf775
GKH		 2932 struct usb_endpoint_descriptor *endpoint;
2933 int buffer_size;
2934
17e80317 2935 endpoint = &alt->endpoint[i].desc;
29cc8897 2936 buffer_size = usb_endpoint_maxp(endpoint);
cb8eaa8b 2937 if (!interrupt_in_found &&
6e8cf775
GKH		 2938 (usb_endpoint_is_int_in(endpoint))) {
2939 /* we found a interrupt in endpoint */
984f6868 2940 dev_dbg(ddev, "found interrupt in\n");
6e8cf775
GKH		 2941
2942 /* not set up yet, so do it now */
03f0dbf7
AC		 2943 edge_serial->interrupt_read_urb =
2944 usb_alloc_urb(0, GFP_KERNEL);
c5c0c555
JH		 2945 if (!edge_serial->interrupt_read_urb) {
2946 response = -ENOMEM;
2947 break;
2948 }
10c642d0 2949
03f0dbf7
AC		 2950 edge_serial->interrupt_in_buffer =
2951 kmalloc(buffer_size, GFP_KERNEL);
6e8cf775 2952 if (!edge_serial->interrupt_in_buffer) {
c5c0c555
JH		 2953 response = -ENOMEM;
2954 break;
6e8cf775 2955 }
03f0dbf7
AC		 2956 edge_serial->interrupt_in_endpoint =
2957 endpoint->bEndpointAddress;
6e8cf775
GKH		 2958
2959 /* set up our interrupt urb */
03f0dbf7
AC		 2960 usb_fill_int_urb(
2961 edge_serial->interrupt_read_urb,
2962 dev,
2963 usb_rcvintpipe(dev,
2964 endpoint->bEndpointAddress),
2965 edge_serial->interrupt_in_buffer,
2966 buffer_size,
2967 edge_interrupt_callback,
2968 edge_serial,
2969 endpoint->bInterval);
6e8cf775 2970
cb8eaa8b 2971 interrupt_in_found = true;
6e8cf775
GKH		 2972 }
2973
cb8eaa8b 2974 if (!bulk_in_found &&
03f0dbf7 2975 (usb_endpoint_is_bulk_in(endpoint))) {
6e8cf775 2976 /* we found a bulk in endpoint */
984f6868 2977 dev_dbg(ddev, "found bulk in\n");
6e8cf775
GKH		 2978
2979 /* not set up yet, so do it now */
03f0dbf7
AC		 2980 edge_serial->read_urb =
2981 usb_alloc_urb(0, GFP_KERNEL);
c5c0c555
JH		 2982 if (!edge_serial->read_urb) {
2983 response = -ENOMEM;
2984 break;
2985 }
10c642d0 2986
03f0dbf7
AC		 2987 edge_serial->bulk_in_buffer =
2988 kmalloc(buffer_size, GFP_KERNEL);
6e8cf775 2989 if (!edge_serial->bulk_in_buffer) {
c5c0c555
JH		 2990 response = -ENOMEM;
2991 break;
6e8cf775 2992 }
03f0dbf7
AC		 2993 edge_serial->bulk_in_endpoint =
2994 endpoint->bEndpointAddress;
6e8cf775
GKH		 2995
2996 /* set up our bulk in urb */
2997 usb_fill_bulk_urb(edge_serial->read_urb, dev,
03f0dbf7
AC		 2998 usb_rcvbulkpipe(dev,
2999 endpoint->bEndpointAddress),
3000 edge_serial->bulk_in_buffer,
29cc8897 3001 usb_endpoint_maxp(endpoint),
03f0dbf7
AC		 3002 edge_bulk_in_callback,
3003 edge_serial);
cb8eaa8b 3004 bulk_in_found = true;
6e8cf775
GKH		 3005 }
3006
cb8eaa8b 3007 if (!bulk_out_found &&
6e8cf775
GKH		 3008 (usb_endpoint_is_bulk_out(endpoint))) {
3009 /* we found a bulk out endpoint */
984f6868 3010 dev_dbg(ddev, "found bulk out\n");
03f0dbf7
AC		 3011 edge_serial->bulk_out_endpoint =
3012 endpoint->bEndpointAddress;
cb8eaa8b 3013 bulk_out_found = true;
6e8cf775
GKH		 3014 }
3015 }
3016
c5c0c555
JH		 3017 if (response || !interrupt_in_found || !bulk_in_found ||
3018 !bulk_out_found) {
3019 if (!response) {
3020 dev_err(ddev, "expected endpoints not found\n");
3021 response = -ENODEV;
3022 }
3023
3024 usb_free_urb(edge_serial->interrupt_read_urb);
3025 kfree(edge_serial->interrupt_in_buffer);
3026
3027 usb_free_urb(edge_serial->read_urb);
3028 kfree(edge_serial->bulk_in_buffer);
3029
3030 kfree(edge_serial);
3031
3032 return response;
6e8cf775
GKH		 3033 }
3034
3035 /* start interrupt read for this edgeport this interrupt will
3036 * continue as long as the edgeport is connected */
03f0dbf7
AC		 3037 response = usb_submit_urb(edge_serial->interrupt_read_urb,
3038 GFP_KERNEL);
6e8cf775 3039 if (response)
984f6868 3040 dev_err(ddev, "%s - Error %d submitting control urb\n",
194343d9 3041 __func__, response);
6e8cf775
GKH		 3042 }
3043 return response;
1da177e4
LT		 3044}
3045
3046
3047/****************************************************************************
f9c99bb8 3048 * edge_disconnect
1da177e4
LT		 3049 * This function is called whenever the device is removed from the usb bus.
3050 ****************************************************************************/
f9c99bb8 3051static void edge_disconnect(struct usb_serial *serial)
1da177e4 3052{
6e8cf775 3053 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
1da177e4 3054
6e8cf775 3055 if (edge_serial->is_epic) {
74ac07e8 3056 usb_kill_urb(edge_serial->interrupt_read_urb);
74ac07e8 3057 usb_kill_urb(edge_serial->read_urb);
6e8cf775 3058 }
f9c99bb8
AS		 3059}
3060
3061
3062/****************************************************************************
3063 * edge_release
3064 * This function is called when the device structure is deallocated.
3065 ****************************************************************************/
3066static void edge_release(struct usb_serial *serial)
3067{
3068 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
6e8cf775 3069
c8d62957
JH		 3070 if (edge_serial->is_epic) {
3071 usb_kill_urb(edge_serial->interrupt_read_urb);
3072 usb_free_urb(edge_serial->interrupt_read_urb);
3073 kfree(edge_serial->interrupt_in_buffer);
3074
3075 usb_kill_urb(edge_serial->read_urb);
3076 usb_free_urb(edge_serial->read_urb);
3077 kfree(edge_serial->bulk_in_buffer);
3078 }
3079
6e8cf775 3080 kfree(edge_serial);
1da177e4
LT		 3081}
3082
c27f3efc
JH		 3083static int edge_port_probe(struct usb_serial_port *port)
3084{
3085 struct edgeport_port *edge_port;
3086
3087 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
3088 if (!edge_port)
3089 return -ENOMEM;
3090
3091 spin_lock_init(&edge_port->ep_lock);
3092 edge_port->port = port;
3093
3094 usb_set_serial_port_data(port, edge_port);
3095
3096 return 0;
3097}
3098
3099static int edge_port_remove(struct usb_serial_port *port)
3100{
3101 struct edgeport_port *edge_port;
3102
3103 edge_port = usb_get_serial_port_data(port);
3104 kfree(edge_port);
3105
3106 return 0;
3107}
3108
35d47976
JH		 3109static struct usb_serial_driver edgeport_2port_device = {
3110 .driver = {
3111 .owner = THIS_MODULE,
3112 .name = "edgeport_2",
3113 },
3114 .description = "Edgeport 2 port adapter",
3115 .id_table = edgeport_2port_id_table,
3116 .num_ports = 2,
fd0c883e
JH		 3117 .num_bulk_in = 1,
3118 .num_bulk_out = 1,
3119 .num_interrupt_in = 1,
35d47976
JH		 3120 .open = edge_open,
3121 .close = edge_close,
3122 .throttle = edge_throttle,
3123 .unthrottle = edge_unthrottle,
3124 .attach = edge_startup,
3125 .disconnect = edge_disconnect,
3126 .release = edge_release,
3127 .port_probe = edge_port_probe,
3128 .port_remove = edge_port_remove,
3129 .ioctl = edge_ioctl,
3130 .set_termios = edge_set_termios,
3131 .tiocmget = edge_tiocmget,
3132 .tiocmset = edge_tiocmset,
3133 .tiocmiwait = usb_serial_generic_tiocmiwait,
3134 .get_icount = usb_serial_generic_get_icount,
3135 .write = edge_write,
3136 .write_room = edge_write_room,
3137 .chars_in_buffer = edge_chars_in_buffer,
3138 .break_ctl = edge_break,
3139 .read_int_callback = edge_interrupt_callback,
3140 .read_bulk_callback = edge_bulk_in_callback,
3141 .write_bulk_callback = edge_bulk_out_data_callback,
3142};
3143
3144static struct usb_serial_driver edgeport_4port_device = {
3145 .driver = {
3146 .owner = THIS_MODULE,
3147 .name = "edgeport_4",
3148 },
3149 .description = "Edgeport 4 port adapter",
3150 .id_table = edgeport_4port_id_table,
3151 .num_ports = 4,
fd0c883e
JH		 3152 .num_bulk_in = 1,
3153 .num_bulk_out = 1,
3154 .num_interrupt_in = 1,
35d47976
JH		 3155 .open = edge_open,
3156 .close = edge_close,
3157 .throttle = edge_throttle,
3158 .unthrottle = edge_unthrottle,
3159 .attach = edge_startup,
3160 .disconnect = edge_disconnect,
3161 .release = edge_release,
3162 .port_probe = edge_port_probe,
3163 .port_remove = edge_port_remove,
3164 .ioctl = edge_ioctl,
3165 .set_termios = edge_set_termios,
3166 .tiocmget = edge_tiocmget,
3167 .tiocmset = edge_tiocmset,
3168 .tiocmiwait = usb_serial_generic_tiocmiwait,
3169 .get_icount = usb_serial_generic_get_icount,
3170 .write = edge_write,
3171 .write_room = edge_write_room,
3172 .chars_in_buffer = edge_chars_in_buffer,
3173 .break_ctl = edge_break,
3174 .read_int_callback = edge_interrupt_callback,
3175 .read_bulk_callback = edge_bulk_in_callback,
3176 .write_bulk_callback = edge_bulk_out_data_callback,
3177};
3178
3179static struct usb_serial_driver edgeport_8port_device = {
3180 .driver = {
3181 .owner = THIS_MODULE,
3182 .name = "edgeport_8",
3183 },
3184 .description = "Edgeport 8 port adapter",
3185 .id_table = edgeport_8port_id_table,
3186 .num_ports = 8,
fd0c883e
JH		 3187 .num_bulk_in = 1,
3188 .num_bulk_out = 1,
3189 .num_interrupt_in = 1,
35d47976
JH		 3190 .open = edge_open,
3191 .close = edge_close,
3192 .throttle = edge_throttle,
3193 .unthrottle = edge_unthrottle,
3194 .attach = edge_startup,
3195 .disconnect = edge_disconnect,
3196 .release = edge_release,
3197 .port_probe = edge_port_probe,
3198 .port_remove = edge_port_remove,
3199 .ioctl = edge_ioctl,
3200 .set_termios = edge_set_termios,
3201 .tiocmget = edge_tiocmget,
3202 .tiocmset = edge_tiocmset,
3203 .tiocmiwait = usb_serial_generic_tiocmiwait,
3204 .get_icount = usb_serial_generic_get_icount,
3205 .write = edge_write,
3206 .write_room = edge_write_room,
3207 .chars_in_buffer = edge_chars_in_buffer,
3208 .break_ctl = edge_break,
3209 .read_int_callback = edge_interrupt_callback,
3210 .read_bulk_callback = edge_bulk_in_callback,
3211 .write_bulk_callback = edge_bulk_out_data_callback,
3212};
3213
3214static struct usb_serial_driver epic_device = {
3215 .driver = {
3216 .owner = THIS_MODULE,
3217 .name = "epic",
3218 },
3219 .description = "EPiC device",
3220 .id_table = Epic_port_id_table,
3221 .num_ports = 1,
fd0c883e
JH		 3222 .num_bulk_in = 1,
3223 .num_bulk_out = 1,
3224 .num_interrupt_in = 1,
35d47976
JH		 3225 .open = edge_open,
3226 .close = edge_close,
3227 .throttle = edge_throttle,
3228 .unthrottle = edge_unthrottle,
3229 .attach = edge_startup,
3230 .disconnect = edge_disconnect,
3231 .release = edge_release,
3232 .port_probe = edge_port_probe,
3233 .port_remove = edge_port_remove,
3234 .ioctl = edge_ioctl,
3235 .set_termios = edge_set_termios,
3236 .tiocmget = edge_tiocmget,
3237 .tiocmset = edge_tiocmset,
3238 .tiocmiwait = usb_serial_generic_tiocmiwait,
3239 .get_icount = usb_serial_generic_get_icount,
3240 .write = edge_write,
3241 .write_room = edge_write_room,
3242 .chars_in_buffer = edge_chars_in_buffer,
3243 .break_ctl = edge_break,
3244 .read_int_callback = edge_interrupt_callback,
3245 .read_bulk_callback = edge_bulk_in_callback,
3246 .write_bulk_callback = edge_bulk_out_data_callback,
3247};
3248
3249static struct usb_serial_driver * const serial_drivers[] = {
3250 &edgeport_2port_device, &edgeport_4port_device,
3251 &edgeport_8port_device, &epic_device, NULL
3252};
3253
68e24113 3254module_usb_serial_driver(serial_drivers, id_table_combined);
1da177e4 3255
03f0dbf7
AC		 3256MODULE_AUTHOR(DRIVER_AUTHOR);
3257MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4 3258MODULE_LICENSE("GPL");
5b9ea932
JS		 3259MODULE_FIRMWARE("edgeport/boot.fw");
3260MODULE_FIRMWARE("edgeport/boot2.fw");
3261MODULE_FIRMWARE("edgeport/down.fw");
3262MODULE_FIRMWARE("edgeport/down2.fw");
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