1 // SPDX-License-Identifier: GPL-2.0+
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 *
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 *
26 */
27
28 #include <linux/kernel.h>
29 #include <linux/jiffies.h>
30 #include <linux/errno.h>
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>
40 #include <linux/firmware.h>
41 #include <linux/ihex.h>
42 #include <linux/uaccess.h>
43 #include <linux/usb.h>
44 #include <linux/usb/serial.h>
45 #include "io_edgeport.h"
46 #include "io_ionsp.h" /* info for the iosp messages */
47 #include "io_16654.h" /* 16654 UART defines */
48
49 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
50 #define DRIVER_DESC "Edgeport USB Serial Driver"
51
52 #define MAX_NAME_LEN 64
53
54 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
55
56 static 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
65 static 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 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_BLACKBOX_IC135A) },
77 { }
78 };
79
80 static const struct usb_device_id edgeport_8port_id_table[] = {
81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
86 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
87 { }
88 };
89
90 static const struct usb_device_id Epic_port_id_table[] = {
91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
95 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
98 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
99 { }
100 };
101
102 /* Devices that this driver supports */
103 static const struct usb_device_id id_table_combined[] = {
104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_BLACKBOX_IC135A) },
126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
129 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
130 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
132 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
133 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
134 { } /* Terminating entry */
135 };
136
137 MODULE_DEVICE_TABLE(usb, id_table_combined);
138
139
140 /* receive port state */
141 enum RXSTATE {
142 EXPECT_HDR1 = 0, /* Expect header byte 1 */
143 EXPECT_HDR2 = 1, /* Expect header byte 2 */
144 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
145 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
146 };
147
148
149 /* Transmit Fifo
150 * This Transmit queue is an extension of the edgeport Rx buffer.
151 * The maximum amount of data buffered in both the edgeport
152 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
153 */
154 struct TxFifo {
155 unsigned int head; /* index to head pointer (write) */
156 unsigned int tail; /* index to tail pointer (read) */
157 unsigned int count; /* Bytes in queue */
158 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
159 unsigned char *fifo; /* allocated Buffer */
160 };
161
162 /* This structure holds all of the local port information */
163 struct edgeport_port {
164 __u16 txCredits; /* our current credits for this port */
165 __u16 maxTxCredits; /* the max size of the port */
166
167 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
168 struct urb *write_urb; /* write URB for this port */
169 bool write_in_progress; /* 'true' while a write URB is outstanding */
170 spinlock_t ep_lock;
171
172 __u8 shadowLCR; /* last LCR value received */
173 __u8 shadowMCR; /* last MCR value received */
174 __u8 shadowMSR; /* last MSR value received */
175 __u8 shadowLSR; /* last LSR value received */
176 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
177 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
178 __u8 validDataMask;
179 __u32 baudRate;
180
181 bool open;
182 bool openPending;
183 bool commandPending;
184 bool closePending;
185 bool chaseResponsePending;
186
187 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
188 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
189 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
190
191 struct usb_serial_port *port; /* loop back to the owner of this object */
192 };
193
194
195 /* This structure holds all of the individual device information */
196 struct edgeport_serial {
197 char name[MAX_NAME_LEN+2]; /* string name of this device */
198
199 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
200 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
201 struct edgeport_product_info product_info; /* Product Info */
202 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
203 int is_epic; /* flag if EPiC device or not */
204
205 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
206 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
207 struct urb *interrupt_read_urb; /* our interrupt urb */
208
209 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
210 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
211 struct urb *read_urb; /* our bulk read urb */
212 bool read_in_progress;
213 spinlock_t es_lock;
214
215 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
216
217 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
218
219 enum RXSTATE rxState; /* the current state of the bulk receive processor */
220 __u8 rxHeader1; /* receive header byte 1 */
221 __u8 rxHeader2; /* receive header byte 2 */
222 __u8 rxHeader3; /* receive header byte 3 */
223 __u8 rxPort; /* the port that we are currently receiving data for */
224 __u8 rxStatusCode; /* the receive status code */
225 __u8 rxStatusParam; /* the receive status parameter */
226 __s16 rxBytesRemaining; /* the number of port bytes left to read */
227 struct usb_serial *serial; /* loop back to the owner of this object */
228 };
229
230 /* baud rate information */
231 struct divisor_table_entry {
232 __u32 BaudRate;
233 __u16 Divisor;
234 };
235
236 /*
237 * Define table of divisors for Rev A EdgePort/4 hardware
238 * These assume a 3.6864MHz crystal, the standard /16, and
239 * MCR.7 = 0.
240 */
241
242 static const struct divisor_table_entry divisor_table[] = {
243 { 50, 4608},
244 { 75, 3072},
245 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
246 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
247 { 150, 1536},
248 { 300, 768},
249 { 600, 384},
250 { 1200, 192},
251 { 1800, 128},
252 { 2400, 96},
253 { 4800, 48},
254 { 7200, 32},
255 { 9600, 24},
256 { 14400, 16},
257 { 19200, 12},
258 { 38400, 6},
259 { 57600, 4},
260 { 115200, 2},
261 { 230400, 1},
262 };
263
264 /* Number of outstanding Command Write Urbs */
265 static atomic_t CmdUrbs = ATOMIC_INIT(0);
266
267
268 /* function prototypes */
269
270 static void edge_close(struct usb_serial_port *port);
271
272 static void process_rcvd_data(struct edgeport_serial *edge_serial,
273 unsigned char *buffer, __u16 bufferLength);
274 static void process_rcvd_status(struct edgeport_serial *edge_serial,
275 __u8 byte2, __u8 byte3);
276 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
277 int length);
278 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
279 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
280 __u8 lsr, __u8 data);
281 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
282 __u8 param);
283 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
284 static void change_port_settings(struct tty_struct *tty,
285 struct edgeport_port *edge_port,
286 const struct ktermios *old_termios);
287 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
288 __u8 regNum, __u8 regValue);
289 static int write_cmd_usb(struct edgeport_port *edge_port,
290 unsigned char *buffer, int writeLength);
291 static void send_more_port_data(struct edgeport_serial *edge_serial,
292 struct edgeport_port *edge_port);
293
294 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
295 __u16 length, const __u8 *data);
296
297 /* ************************************************************************ */
298 /* ************************************************************************ */
299 /* ************************************************************************ */
300 /* ************************************************************************ */
301
302 /************************************************************************
303 * *
304 * update_edgeport_E2PROM() Compare current versions of *
305 * Boot ROM and Manufacture *
306 * Descriptors with versions *
307 * embedded in this driver *
308 * *
309 ************************************************************************/
update_edgeport_E2PROM(struct edgeport_serial * edge_serial)310 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
311 {
312 struct device *dev = &edge_serial->serial->dev->dev;
313 __u32 BootCurVer;
314 __u32 BootNewVer;
315 __u8 BootMajorVersion;
316 __u8 BootMinorVersion;
317 __u16 BootBuildNumber;
318 __u32 Bootaddr;
319 const struct ihex_binrec *rec;
320 const struct firmware *fw;
321 const char *fw_name;
322 int response;
323
324 switch (edge_serial->product_info.iDownloadFile) {
325 case EDGE_DOWNLOAD_FILE_I930:
326 fw_name = "edgeport/boot.fw";
327 break;
328 case EDGE_DOWNLOAD_FILE_80251:
329 fw_name = "edgeport/boot2.fw";
330 break;
331 default:
332 return;
333 }
334
335 response = request_ihex_firmware(&fw, fw_name,
336 &edge_serial->serial->dev->dev);
337 if (response) {
338 dev_err(dev, "Failed to load image \"%s\" err %d\n",
339 fw_name, response);
340 return;
341 }
342
343 rec = (const struct ihex_binrec *)fw->data;
344 BootMajorVersion = rec->data[0];
345 BootMinorVersion = rec->data[1];
346 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
347
348 /* Check Boot Image Version */
349 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
350 (edge_serial->boot_descriptor.MinorVersion << 16) +
351 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
352
353 BootNewVer = (BootMajorVersion << 24) +
354 (BootMinorVersion << 16) +
355 BootBuildNumber;
356
357 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
358 edge_serial->boot_descriptor.MajorVersion,
359 edge_serial->boot_descriptor.MinorVersion,
360 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
361
362
363 if (BootNewVer > BootCurVer) {
364 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
365 edge_serial->boot_descriptor.MajorVersion,
366 edge_serial->boot_descriptor.MinorVersion,
367 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
368 BootMajorVersion, BootMinorVersion, BootBuildNumber);
369
370 dev_dbg(dev, "Downloading new Boot Image\n");
371
372 for (rec = ihex_next_binrec(rec); rec;
373 rec = ihex_next_binrec(rec)) {
374 Bootaddr = be32_to_cpu(rec->addr);
375 response = rom_write(edge_serial->serial,
376 Bootaddr >> 16,
377 Bootaddr & 0xFFFF,
378 be16_to_cpu(rec->len),
379 &rec->data[0]);
380 if (response < 0) {
381 dev_err(&edge_serial->serial->dev->dev,
382 "rom_write failed (%x, %x, %d)\n",
383 Bootaddr >> 16, Bootaddr & 0xFFFF,
384 be16_to_cpu(rec->len));
385 break;
386 }
387 }
388 } else {
389 dev_dbg(dev, "Boot Image -- already up to date\n");
390 }
391 release_firmware(fw);
392 }
393
dump_product_info(struct edgeport_serial * edge_serial,struct edgeport_product_info * product_info)394 static void dump_product_info(struct edgeport_serial *edge_serial,
395 struct edgeport_product_info *product_info)
396 {
397 struct device *dev = &edge_serial->serial->dev->dev;
398
399 /* Dump Product Info structure */
400 dev_dbg(dev, "**Product Information:\n");
401 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
402 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
403 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
404 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
405 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
406 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
407 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
408 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
409 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
410 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
411 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
412 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
413 product_info->BootMajorVersion,
414 product_info->BootMinorVersion,
415 le16_to_cpu(product_info->BootBuildNumber));
416 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
417 product_info->FirmwareMajorVersion,
418 product_info->FirmwareMinorVersion,
419 le16_to_cpu(product_info->FirmwareBuildNumber));
420 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
421 product_info->ManufactureDescDate[0],
422 product_info->ManufactureDescDate[1],
423 product_info->ManufactureDescDate[2]+1900);
424 dev_dbg(dev, " iDownloadFile 0x%x\n",
425 product_info->iDownloadFile);
426 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
427 }
428
get_product_info(struct edgeport_serial * edge_serial)429 static void get_product_info(struct edgeport_serial *edge_serial)
430 {
431 struct edgeport_product_info *product_info = &edge_serial->product_info;
432
433 memset(product_info, 0, sizeof(struct edgeport_product_info));
434
435 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
436 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
437 product_info->ProdInfoVer = 0;
438
439 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
440 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
441 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
442 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
443
444 product_info->BootMajorVersion =
445 edge_serial->boot_descriptor.MajorVersion;
446 product_info->BootMinorVersion =
447 edge_serial->boot_descriptor.MinorVersion;
448 product_info->BootBuildNumber =
449 edge_serial->boot_descriptor.BuildNumber;
450
451 memcpy(product_info->ManufactureDescDate,
452 edge_serial->manuf_descriptor.DescDate,
453 sizeof(edge_serial->manuf_descriptor.DescDate));
454
455 /* check if this is 2nd generation hardware */
456 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
457 & ION_DEVICE_ID_80251_NETCHIP)
458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
459 else
460 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
461
462 /* Determine Product type and set appropriate flags */
463 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
464 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
465 case ION_DEVICE_ID_EDGEPORT_4T:
466 case ION_DEVICE_ID_EDGEPORT_4:
467 case ION_DEVICE_ID_EDGEPORT_2:
468 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
469 case ION_DEVICE_ID_EDGEPORT_8:
470 case ION_DEVICE_ID_EDGEPORT_421:
471 case ION_DEVICE_ID_EDGEPORT_21:
472 case ION_DEVICE_ID_EDGEPORT_2_DIN:
473 case ION_DEVICE_ID_EDGEPORT_4_DIN:
474 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
475 case ION_DEVICE_ID_BLACKBOX_IC135A:
476 product_info->IsRS232 = 1;
477 break;
478
479 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
480 product_info->IsRS422 = 1;
481 product_info->IsRS485 = 1;
482 break;
483
484 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
485 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
486 product_info->IsRS422 = 1;
487 break;
488 }
489
490 dump_product_info(edge_serial, product_info);
491 }
492
get_epic_descriptor(struct edgeport_serial * ep)493 static int get_epic_descriptor(struct edgeport_serial *ep)
494 {
495 int result;
496 struct usb_serial *serial = ep->serial;
497 struct edgeport_product_info *product_info = &ep->product_info;
498 struct edge_compatibility_descriptor *epic;
499 struct edge_compatibility_bits *bits;
500 struct device *dev = &serial->dev->dev;
501
502 ep->is_epic = 0;
503
504 epic = kmalloc_obj(*epic);
505 if (!epic)
506 return -ENOMEM;
507
508 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
509 USB_REQUEST_ION_GET_EPIC_DESC,
510 0xC0, 0x00, 0x00,
511 epic, sizeof(*epic),
512 300);
513 if (result == sizeof(*epic)) {
514 ep->is_epic = 1;
515 memcpy(&ep->epic_descriptor, epic, sizeof(*epic));
516 memset(product_info, 0, sizeof(struct edgeport_product_info));
517
518 product_info->NumPorts = epic->NumPorts;
519 product_info->ProdInfoVer = 0;
520 product_info->FirmwareMajorVersion = epic->MajorVersion;
521 product_info->FirmwareMinorVersion = epic->MinorVersion;
522 product_info->FirmwareBuildNumber = epic->BuildNumber;
523 product_info->iDownloadFile = epic->iDownloadFile;
524 product_info->EpicVer = epic->EpicVer;
525 product_info->Epic = epic->Supports;
526 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
527 dump_product_info(ep, product_info);
528
529 bits = &ep->epic_descriptor.Supports;
530 dev_dbg(dev, "**EPIC descriptor:\n");
531 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
532 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
533 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
534 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
535 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
536 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
537 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
538 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
539 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
540 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
541 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
542 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
543 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
544
545 result = 0;
546 } else if (result >= 0) {
547 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n",
548 result);
549 result = -EIO;
550 }
551
552 kfree(epic);
553
554 return result;
555 }
556
557
558 /************************************************************************/
559 /************************************************************************/
560 /* U S B C A L L B A C K F U N C T I O N S */
561 /* U S B C A L L B A C K F U N C T I O N S */
562 /************************************************************************/
563 /************************************************************************/
564
565 /*****************************************************************************
566 * edge_interrupt_callback
567 * this is the callback function for when we have received data on the
568 * interrupt endpoint.
569 *****************************************************************************/
edge_interrupt_callback(struct urb * urb)570 static void edge_interrupt_callback(struct urb *urb)
571 {
572 struct edgeport_serial *edge_serial = urb->context;
573 struct device *dev;
574 struct edgeport_port *edge_port;
575 struct usb_serial_port *port;
576 unsigned char *data = urb->transfer_buffer;
577 int length = urb->actual_length;
578 unsigned long flags;
579 int bytes_avail;
580 int position;
581 int txCredits;
582 int portNumber;
583 int result;
584 int status = urb->status;
585
586 switch (status) {
587 case 0:
588 /* success */
589 break;
590 case -ECONNRESET:
591 case -ENOENT:
592 case -ESHUTDOWN:
593 /* this urb is terminated, clean up */
594 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
595 return;
596 default:
597 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
598 goto exit;
599 }
600
601 dev = &edge_serial->serial->dev->dev;
602
603 /* process this interrupt-read even if there are no ports open */
604 if (length) {
605 usb_serial_debug_data(dev, __func__, length, data);
606
607 if (length > 1) {
608 bytes_avail = data[0] | (data[1] << 8);
609 if (bytes_avail) {
610 spin_lock_irqsave(&edge_serial->es_lock, flags);
611 edge_serial->rxBytesAvail += bytes_avail;
612 dev_dbg(dev,
613 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
614 __func__, bytes_avail,
615 edge_serial->rxBytesAvail,
616 edge_serial->read_in_progress);
617
618 if (edge_serial->rxBytesAvail > 0 &&
619 !edge_serial->read_in_progress) {
620 dev_dbg(dev, "%s - posting a read\n", __func__);
621 edge_serial->read_in_progress = true;
622
623 /* we have pending bytes on the
624 bulk in pipe, send a request */
625 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
626 if (result) {
627 dev_err(dev,
628 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
629 __func__, result);
630 edge_serial->read_in_progress = false;
631 }
632 }
633 spin_unlock_irqrestore(&edge_serial->es_lock,
634 flags);
635 }
636 }
637 /* grab the txcredits for the ports if available */
638 position = 2;
639 portNumber = 0;
640 while ((position < length - 1) &&
641 (portNumber < edge_serial->serial->num_ports)) {
642 txCredits = data[position] | (data[position+1] << 8);
643 if (txCredits) {
644 port = edge_serial->serial->port[portNumber];
645 edge_port = usb_get_serial_port_data(port);
646 if (edge_port && edge_port->open) {
647 spin_lock_irqsave(&edge_port->ep_lock,
648 flags);
649 edge_port->txCredits += txCredits;
650 spin_unlock_irqrestore(&edge_port->ep_lock,
651 flags);
652 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
653 __func__, portNumber,
654 edge_port->txCredits);
655
656 /* tell the tty driver that something
657 has changed */
658 tty_port_tty_wakeup(&edge_port->port->port);
659 /* Since we have more credit, check
660 if more data can be sent */
661 send_more_port_data(edge_serial,
662 edge_port);
663 }
664 }
665 position += 2;
666 ++portNumber;
667 }
668 }
669
670 exit:
671 result = usb_submit_urb(urb, GFP_ATOMIC);
672 if (result)
673 dev_err(&urb->dev->dev,
674 "%s - Error %d submitting control urb\n",
675 __func__, result);
676 }
677
678
679 /*****************************************************************************
680 * edge_bulk_in_callback
681 * this is the callback function for when we have received data on the
682 * bulk in endpoint.
683 *****************************************************************************/
edge_bulk_in_callback(struct urb * urb)684 static void edge_bulk_in_callback(struct urb *urb)
685 {
686 struct edgeport_serial *edge_serial = urb->context;
687 struct device *dev;
688 unsigned char *data = urb->transfer_buffer;
689 int retval;
690 __u16 raw_data_length;
691 int status = urb->status;
692 unsigned long flags;
693
694 if (status) {
695 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
696 __func__, status);
697 edge_serial->read_in_progress = false;
698 return;
699 }
700
701 if (urb->actual_length == 0) {
702 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
703 edge_serial->read_in_progress = false;
704 return;
705 }
706
707 dev = &edge_serial->serial->dev->dev;
708 raw_data_length = urb->actual_length;
709
710 usb_serial_debug_data(dev, __func__, raw_data_length, data);
711
712 spin_lock_irqsave(&edge_serial->es_lock, flags);
713
714 /* decrement our rxBytes available by the number that we just got */
715 edge_serial->rxBytesAvail -= raw_data_length;
716
717 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
718 raw_data_length, edge_serial->rxBytesAvail);
719
720 process_rcvd_data(edge_serial, data, urb->actual_length);
721
722 /* check to see if there's any more data for us to read */
723 if (edge_serial->rxBytesAvail > 0) {
724 dev_dbg(dev, "%s - posting a read\n", __func__);
725 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
726 if (retval) {
727 dev_err(dev,
728 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
729 __func__, retval);
730 edge_serial->read_in_progress = false;
731 }
732 } else {
733 edge_serial->read_in_progress = false;
734 }
735
736 spin_unlock_irqrestore(&edge_serial->es_lock, flags);
737 }
738
739
740 /*****************************************************************************
741 * edge_bulk_out_data_callback
742 * this is the callback function for when we have finished sending
743 * serial data on the bulk out endpoint.
744 *****************************************************************************/
edge_bulk_out_data_callback(struct urb * urb)745 static void edge_bulk_out_data_callback(struct urb *urb)
746 {
747 struct edgeport_port *edge_port = urb->context;
748 int status = urb->status;
749
750 if (status) {
751 dev_dbg(&urb->dev->dev,
752 "%s - nonzero write bulk status received: %d\n",
753 __func__, status);
754 }
755
756 if (edge_port->open)
757 tty_port_tty_wakeup(&edge_port->port->port);
758
759 /* Release the Write URB */
760 edge_port->write_in_progress = false;
761
762 /* Check if more data needs to be sent */
763 send_more_port_data((struct edgeport_serial *)
764 (usb_get_serial_data(edge_port->port->serial)), edge_port);
765 }
766
767
768 /*****************************************************************************
769 * BulkOutCmdCallback
770 * this is the callback function for when we have finished sending a
771 * command on the bulk out endpoint.
772 *****************************************************************************/
edge_bulk_out_cmd_callback(struct urb * urb)773 static void edge_bulk_out_cmd_callback(struct urb *urb)
774 {
775 struct edgeport_port *edge_port = urb->context;
776 struct device *dev = &urb->dev->dev;
777 int status = urb->status;
778
779 atomic_dec(&CmdUrbs);
780 dev_dbg(dev, "%s - FREE URB %p (outstanding %d)\n", __func__, urb,
781 atomic_read(&CmdUrbs));
782
783
784 /* clean up the transfer buffer */
785 kfree(urb->transfer_buffer);
786
787 /* Free the command urb */
788 usb_free_urb(urb);
789
790 if (status) {
791 dev_dbg(dev, "%s - nonzero write bulk status received: %d\n",
792 __func__, status);
793 return;
794 }
795
796 /* tell the tty driver that something has changed */
797 if (edge_port->open)
798 tty_port_tty_wakeup(&edge_port->port->port);
799
800 /* we have completed the command */
801 edge_port->commandPending = false;
802 wake_up(&edge_port->wait_command);
803 }
804
805
806 /*****************************************************************************
807 * Driver tty interface functions
808 *****************************************************************************/
809
810 /*****************************************************************************
811 * SerialOpen
812 * this function is called by the tty driver when a port is opened
813 * If successful, we return 0
814 * Otherwise we return a negative error number.
815 *****************************************************************************/
edge_open(struct tty_struct * tty,struct usb_serial_port * port)816 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
817 {
818 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
819 struct device *dev = &port->dev;
820 struct usb_serial *serial;
821 struct edgeport_serial *edge_serial;
822 int response;
823
824 if (edge_port == NULL)
825 return -ENODEV;
826
827 /* see if we've set up our endpoint info yet (can't set it up
828 in edge_startup as the structures were not set up at that time.) */
829 serial = port->serial;
830 edge_serial = usb_get_serial_data(serial);
831 if (edge_serial == NULL)
832 return -ENODEV;
833 if (edge_serial->interrupt_in_buffer == NULL) {
834 struct usb_serial_port *port0 = serial->port[0];
835
836 /* not set up yet, so do it now */
837 edge_serial->interrupt_in_buffer =
838 port0->interrupt_in_buffer;
839 edge_serial->interrupt_in_endpoint =
840 port0->interrupt_in_endpointAddress;
841 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
842 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
843 edge_serial->bulk_in_endpoint =
844 port0->bulk_in_endpointAddress;
845 edge_serial->read_urb = port0->read_urb;
846 edge_serial->bulk_out_endpoint =
847 port0->bulk_out_endpointAddress;
848
849 /* set up our interrupt urb */
850 usb_fill_int_urb(edge_serial->interrupt_read_urb,
851 serial->dev,
852 usb_rcvintpipe(serial->dev,
853 port0->interrupt_in_endpointAddress),
854 port0->interrupt_in_buffer,
855 edge_serial->interrupt_read_urb->transfer_buffer_length,
856 edge_interrupt_callback, edge_serial,
857 edge_serial->interrupt_read_urb->interval);
858
859 /* set up our bulk in urb */
860 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
861 usb_rcvbulkpipe(serial->dev,
862 port0->bulk_in_endpointAddress),
863 port0->bulk_in_buffer,
864 edge_serial->read_urb->transfer_buffer_length,
865 edge_bulk_in_callback, edge_serial);
866 edge_serial->read_in_progress = false;
867
868 /* start interrupt read for this edgeport
869 * this interrupt will continue as long
870 * as the edgeport is connected */
871 response = usb_submit_urb(edge_serial->interrupt_read_urb,
872 GFP_KERNEL);
873 if (response) {
874 dev_err(dev, "%s - Error %d submitting control urb\n",
875 __func__, response);
876 }
877 }
878
879 /* initialize our wait queues */
880 init_waitqueue_head(&edge_port->wait_open);
881 init_waitqueue_head(&edge_port->wait_chase);
882 init_waitqueue_head(&edge_port->wait_command);
883
884 /* initialize our port settings */
885 edge_port->txCredits = 0; /* Can't send any data yet */
886 /* Must always set this bit to enable ints! */
887 edge_port->shadowMCR = MCR_MASTER_IE;
888 edge_port->chaseResponsePending = false;
889
890 /* send a open port command */
891 edge_port->openPending = true;
892 edge_port->open = false;
893 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
894
895 if (response < 0) {
896 dev_err(dev, "%s - error sending open port command\n", __func__);
897 edge_port->openPending = false;
898 return -ENODEV;
899 }
900
901 /* now wait for the port to be completely opened */
902 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
903 OPEN_TIMEOUT);
904
905 if (!edge_port->open) {
906 /* open timed out */
907 dev_dbg(dev, "%s - open timeout\n", __func__);
908 edge_port->openPending = false;
909 return -ENODEV;
910 }
911
912 /* create the txfifo */
913 edge_port->txfifo.head = 0;
914 edge_port->txfifo.tail = 0;
915 edge_port->txfifo.count = 0;
916 edge_port->txfifo.size = edge_port->maxTxCredits;
917 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
918
919 if (!edge_port->txfifo.fifo) {
920 edge_close(port);
921 return -ENOMEM;
922 }
923
924 /* Allocate a URB for the write */
925 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
926 edge_port->write_in_progress = false;
927
928 if (!edge_port->write_urb) {
929 edge_close(port);
930 return -ENOMEM;
931 }
932
933 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
934 __func__, edge_port->maxTxCredits);
935
936 return 0;
937 }
938
939
940 /************************************************************************
941 *
942 * block_until_chase_response
943 *
944 * This function will block the close until one of the following:
945 * 1. Response to our Chase comes from Edgeport
946 * 2. A timeout of 10 seconds without activity has expired
947 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
948 *
949 ************************************************************************/
block_until_chase_response(struct edgeport_port * edge_port)950 static void block_until_chase_response(struct edgeport_port *edge_port)
951 {
952 struct device *dev = &edge_port->port->dev;
953 DEFINE_WAIT(wait);
954 __u16 lastCredits;
955 int timeout = 1*HZ;
956 int loop = 10;
957
958 while (1) {
959 /* Save Last credits */
960 lastCredits = edge_port->txCredits;
961
962 /* Did we get our Chase response */
963 if (!edge_port->chaseResponsePending) {
964 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
965
966 /* did we get all of our credit back? */
967 if (edge_port->txCredits == edge_port->maxTxCredits) {
968 dev_dbg(dev, "%s - Got all credits\n", __func__);
969 return;
970 }
971 }
972
973 /* Block the thread for a while */
974 prepare_to_wait(&edge_port->wait_chase, &wait,
975 TASK_UNINTERRUPTIBLE);
976 schedule_timeout(timeout);
977 finish_wait(&edge_port->wait_chase, &wait);
978
979 if (lastCredits == edge_port->txCredits) {
980 /* No activity.. count down. */
981 loop--;
982 if (loop == 0) {
983 edge_port->chaseResponsePending = false;
984 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
985 return;
986 }
987 } else {
988 /* Reset timeout value back to 10 seconds */
989 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
990 lastCredits, edge_port->txCredits);
991 loop = 10;
992 }
993 }
994 }
995
996
997 /************************************************************************
998 *
999 * block_until_tx_empty
1000 *
1001 * This function will block the close until one of the following:
1002 * 1. TX count are 0
1003 * 2. The edgeport has stopped
1004 * 3. A timeout of 3 seconds without activity has expired
1005 *
1006 ************************************************************************/
block_until_tx_empty(struct edgeport_port * edge_port)1007 static void block_until_tx_empty(struct edgeport_port *edge_port)
1008 {
1009 struct device *dev = &edge_port->port->dev;
1010 DEFINE_WAIT(wait);
1011 struct TxFifo *fifo = &edge_port->txfifo;
1012 __u32 lastCount;
1013 int timeout = HZ/10;
1014 int loop = 30;
1015
1016 while (1) {
1017 /* Save Last count */
1018 lastCount = fifo->count;
1019
1020 /* Is the Edgeport Buffer empty? */
1021 if (lastCount == 0) {
1022 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1023 return;
1024 }
1025
1026 /* Block the thread for a while */
1027 prepare_to_wait(&edge_port->wait_chase, &wait,
1028 TASK_UNINTERRUPTIBLE);
1029 schedule_timeout(timeout);
1030 finish_wait(&edge_port->wait_chase, &wait);
1031
1032 dev_dbg(dev, "%s wait\n", __func__);
1033
1034 if (lastCount == fifo->count) {
1035 /* No activity.. count down. */
1036 loop--;
1037 if (loop == 0) {
1038 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1039 return;
1040 }
1041 } else {
1042 /* Reset timeout value back to seconds */
1043 loop = 30;
1044 }
1045 }
1046 }
1047
1048
1049 /*****************************************************************************
1050 * edge_close
1051 * this function is called by the tty driver when a port is closed
1052 *****************************************************************************/
edge_close(struct usb_serial_port * port)1053 static void edge_close(struct usb_serial_port *port)
1054 {
1055 struct edgeport_serial *edge_serial;
1056 struct edgeport_port *edge_port;
1057 int status;
1058
1059 edge_serial = usb_get_serial_data(port->serial);
1060 edge_port = usb_get_serial_port_data(port);
1061 if (edge_serial == NULL || edge_port == NULL)
1062 return;
1063
1064 /* block until tx is empty */
1065 block_until_tx_empty(edge_port);
1066
1067 edge_port->closePending = true;
1068
1069 if (!edge_serial->is_epic ||
1070 edge_serial->epic_descriptor.Supports.IOSPChase) {
1071 /* flush and chase */
1072 edge_port->chaseResponsePending = true;
1073
1074 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1075 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1076 if (status == 0)
1077 /* block until chase finished */
1078 block_until_chase_response(edge_port);
1079 else
1080 edge_port->chaseResponsePending = false;
1081 }
1082
1083 if (!edge_serial->is_epic ||
1084 edge_serial->epic_descriptor.Supports.IOSPClose) {
1085 /* close the port */
1086 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1087 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1088 }
1089
1090 /* port->close = true; */
1091 edge_port->closePending = false;
1092 edge_port->open = false;
1093 edge_port->openPending = false;
1094
1095 usb_kill_urb(edge_port->write_urb);
1096
1097 if (edge_port->write_urb) {
1098 /* if this urb had a transfer buffer already
1099 (old transfer) free it */
1100 kfree(edge_port->write_urb->transfer_buffer);
1101 usb_free_urb(edge_port->write_urb);
1102 edge_port->write_urb = NULL;
1103 }
1104 kfree(edge_port->txfifo.fifo);
1105 edge_port->txfifo.fifo = NULL;
1106 }
1107
1108 /*****************************************************************************
1109 * SerialWrite
1110 * this function is called by the tty driver when data should be written
1111 * to the port.
1112 * If successful, we return the number of bytes written, otherwise we
1113 * return a negative error number.
1114 *****************************************************************************/
edge_write(struct tty_struct * tty,struct usb_serial_port * port,const unsigned char * data,int count)1115 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1116 const unsigned char *data, int count)
1117 {
1118 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1119 struct TxFifo *fifo;
1120 int copySize;
1121 int bytesleft;
1122 int firsthalf;
1123 int secondhalf;
1124 unsigned long flags;
1125
1126 if (edge_port == NULL)
1127 return -ENODEV;
1128
1129 /* get a pointer to the Tx fifo */
1130 fifo = &edge_port->txfifo;
1131
1132 spin_lock_irqsave(&edge_port->ep_lock, flags);
1133
1134 /* calculate number of bytes to put in fifo */
1135 copySize = min_t(unsigned int, count,
1136 (edge_port->txCredits - fifo->count));
1137
1138 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1139 __func__, count, edge_port->txCredits - fifo->count, copySize);
1140
1141 /* catch writes of 0 bytes which the tty driver likes to give us,
1142 and when txCredits is empty */
1143 if (copySize == 0) {
1144 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1145 goto finish_write;
1146 }
1147
1148 /* queue the data
1149 * since we can never overflow the buffer we do not have to check for a
1150 * full condition
1151 *
1152 * the copy is done is two parts -- first fill to the end of the buffer
1153 * then copy the reset from the start of the buffer
1154 */
1155 bytesleft = fifo->size - fifo->head;
1156 firsthalf = min(bytesleft, copySize);
1157 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1158 firsthalf, bytesleft);
1159
1160 /* now copy our data */
1161 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1162 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1163
1164 /* update the index and size */
1165 fifo->head += firsthalf;
1166 fifo->count += firsthalf;
1167
1168 /* wrap the index */
1169 if (fifo->head == fifo->size)
1170 fifo->head = 0;
1171
1172 secondhalf = copySize-firsthalf;
1173
1174 if (secondhalf) {
1175 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1176 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1177 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1178 /* update the index and size */
1179 fifo->count += secondhalf;
1180 fifo->head += secondhalf;
1181 /* No need to check for wrap since we can not get to end of
1182 * the fifo in this part
1183 */
1184 }
1185
1186 finish_write:
1187 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1188
1189 send_more_port_data((struct edgeport_serial *)
1190 usb_get_serial_data(port->serial), edge_port);
1191
1192 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1193 __func__, copySize, edge_port->txCredits, fifo->count);
1194
1195 return copySize;
1196 }
1197
1198
1199 /************************************************************************
1200 *
1201 * send_more_port_data()
1202 *
1203 * This routine attempts to write additional UART transmit data
1204 * to a port over the USB bulk pipe. It is called (1) when new
1205 * data has been written to a port's TxBuffer from higher layers
1206 * (2) when the peripheral sends us additional TxCredits indicating
1207 * that it can accept more Tx data for a given port; and (3) when
1208 * a bulk write completes successfully and we want to see if we
1209 * can transmit more.
1210 *
1211 ************************************************************************/
send_more_port_data(struct edgeport_serial * edge_serial,struct edgeport_port * edge_port)1212 static void send_more_port_data(struct edgeport_serial *edge_serial,
1213 struct edgeport_port *edge_port)
1214 {
1215 struct TxFifo *fifo = &edge_port->txfifo;
1216 struct device *dev = &edge_port->port->dev;
1217 struct urb *urb;
1218 unsigned char *buffer;
1219 int status;
1220 int count;
1221 int bytesleft;
1222 int firsthalf;
1223 int secondhalf;
1224 unsigned long flags;
1225
1226 spin_lock_irqsave(&edge_port->ep_lock, flags);
1227
1228 if (edge_port->write_in_progress ||
1229 !edge_port->open ||
1230 (fifo->count == 0)) {
1231 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1232 __func__, fifo->count, edge_port->write_in_progress);
1233 goto exit_send;
1234 }
1235
1236 /* since the amount of data in the fifo will always fit into the
1237 * edgeport buffer we do not need to check the write length
1238 *
1239 * Do we have enough credits for this port to make it worthwhile
1240 * to bother queueing a write. If it's too small, say a few bytes,
1241 * it's better to wait for more credits so we can do a larger write.
1242 */
1243 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1244 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1245 __func__, fifo->count, edge_port->txCredits);
1246 goto exit_send;
1247 }
1248
1249 /* lock this write */
1250 edge_port->write_in_progress = true;
1251
1252 /* get a pointer to the write_urb */
1253 urb = edge_port->write_urb;
1254
1255 /* make sure transfer buffer is freed */
1256 kfree(urb->transfer_buffer);
1257 urb->transfer_buffer = NULL;
1258
1259 /* build the data header for the buffer and port that we are about
1260 to send out */
1261 count = fifo->count;
1262 buffer = kmalloc(count+2, GFP_ATOMIC);
1263 if (!buffer) {
1264 edge_port->write_in_progress = false;
1265 goto exit_send;
1266 }
1267 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1268 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1269
1270 /* now copy our data */
1271 bytesleft = fifo->size - fifo->tail;
1272 firsthalf = min(bytesleft, count);
1273 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1274 fifo->tail += firsthalf;
1275 fifo->count -= firsthalf;
1276 if (fifo->tail == fifo->size)
1277 fifo->tail = 0;
1278
1279 secondhalf = count-firsthalf;
1280 if (secondhalf) {
1281 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1282 secondhalf);
1283 fifo->tail += secondhalf;
1284 fifo->count -= secondhalf;
1285 }
1286
1287 if (count)
1288 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1289
1290 /* fill up the urb with all of our data and submit it */
1291 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1292 usb_sndbulkpipe(edge_serial->serial->dev,
1293 edge_serial->bulk_out_endpoint),
1294 buffer, count+2,
1295 edge_bulk_out_data_callback, edge_port);
1296
1297 /* decrement the number of credits we have by the number we just sent */
1298 edge_port->txCredits -= count;
1299 edge_port->port->icount.tx += count;
1300
1301 status = usb_submit_urb(urb, GFP_ATOMIC);
1302 if (status) {
1303 /* something went wrong */
1304 dev_err_console(edge_port->port,
1305 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1306 __func__, status);
1307 edge_port->write_in_progress = false;
1308
1309 /* revert the credits as something bad happened. */
1310 edge_port->txCredits += count;
1311 edge_port->port->icount.tx -= count;
1312 }
1313 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1314 __func__, count, edge_port->txCredits, fifo->count);
1315
1316 exit_send:
1317 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1318 }
1319
1320
1321 /*****************************************************************************
1322 * edge_write_room
1323 * this function is called by the tty driver when it wants to know how
1324 * many bytes of data we can accept for a specific port.
1325 *****************************************************************************/
edge_write_room(struct tty_struct * tty)1326 static unsigned int edge_write_room(struct tty_struct *tty)
1327 {
1328 struct usb_serial_port *port = tty->driver_data;
1329 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1330 unsigned int room;
1331 unsigned long flags;
1332
1333 /* total of both buffers is still txCredit */
1334 spin_lock_irqsave(&edge_port->ep_lock, flags);
1335 room = edge_port->txCredits - edge_port->txfifo.count;
1336 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1337
1338 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
1339 return room;
1340 }
1341
1342
1343 /*****************************************************************************
1344 * edge_chars_in_buffer
1345 * this function is called by the tty driver when it wants to know how
1346 * many bytes of data we currently have outstanding in the port (data that
1347 * has been written, but hasn't made it out the port yet)
1348 *****************************************************************************/
edge_chars_in_buffer(struct tty_struct * tty)1349 static unsigned int edge_chars_in_buffer(struct tty_struct *tty)
1350 {
1351 struct usb_serial_port *port = tty->driver_data;
1352 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1353 unsigned int num_chars;
1354 unsigned long flags;
1355
1356 spin_lock_irqsave(&edge_port->ep_lock, flags);
1357 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1358 edge_port->txfifo.count;
1359 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1360 if (num_chars) {
1361 dev_dbg(&port->dev, "%s - returns %u\n", __func__, num_chars);
1362 }
1363
1364 return num_chars;
1365 }
1366
1367
1368 /*****************************************************************************
1369 * SerialThrottle
1370 * this function is called by the tty driver when it wants to stop the data
1371 * being read from the port.
1372 *****************************************************************************/
edge_throttle(struct tty_struct * tty)1373 static void edge_throttle(struct tty_struct *tty)
1374 {
1375 struct usb_serial_port *port = tty->driver_data;
1376 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1377 int status;
1378
1379 if (edge_port == NULL)
1380 return;
1381
1382 if (!edge_port->open) {
1383 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1384 return;
1385 }
1386
1387 /* if we are implementing XON/XOFF, send the stop character */
1388 if (I_IXOFF(tty)) {
1389 unsigned char stop_char = STOP_CHAR(tty);
1390 status = edge_write(tty, port, &stop_char, 1);
1391 if (status <= 0)
1392 return;
1393 }
1394
1395 /* if we are implementing RTS/CTS, toggle that line */
1396 if (C_CRTSCTS(tty)) {
1397 edge_port->shadowMCR &= ~MCR_RTS;
1398 status = send_cmd_write_uart_register(edge_port, MCR,
1399 edge_port->shadowMCR);
1400 if (status != 0)
1401 return;
1402 }
1403 }
1404
1405
1406 /*****************************************************************************
1407 * edge_unthrottle
1408 * this function is called by the tty driver when it wants to resume the
1409 * data being read from the port (called after SerialThrottle is called)
1410 *****************************************************************************/
edge_unthrottle(struct tty_struct * tty)1411 static void edge_unthrottle(struct tty_struct *tty)
1412 {
1413 struct usb_serial_port *port = tty->driver_data;
1414 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1415 int status;
1416
1417 if (edge_port == NULL)
1418 return;
1419
1420 if (!edge_port->open) {
1421 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1422 return;
1423 }
1424
1425 /* if we are implementing XON/XOFF, send the start character */
1426 if (I_IXOFF(tty)) {
1427 unsigned char start_char = START_CHAR(tty);
1428 status = edge_write(tty, port, &start_char, 1);
1429 if (status <= 0)
1430 return;
1431 }
1432 /* if we are implementing RTS/CTS, toggle that line */
1433 if (C_CRTSCTS(tty)) {
1434 edge_port->shadowMCR |= MCR_RTS;
1435 send_cmd_write_uart_register(edge_port, MCR,
1436 edge_port->shadowMCR);
1437 }
1438 }
1439
1440
1441 /*****************************************************************************
1442 * SerialSetTermios
1443 * this function is called by the tty driver when it wants to change
1444 * the termios structure
1445 *****************************************************************************/
edge_set_termios(struct tty_struct * tty,struct usb_serial_port * port,const struct ktermios * old_termios)1446 static void edge_set_termios(struct tty_struct *tty,
1447 struct usb_serial_port *port,
1448 const struct ktermios *old_termios)
1449 {
1450 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1451
1452 if (edge_port == NULL)
1453 return;
1454
1455 if (!edge_port->open) {
1456 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1457 return;
1458 }
1459
1460 /* change the port settings to the new ones specified */
1461 change_port_settings(tty, edge_port, old_termios);
1462 }
1463
1464
1465 /*****************************************************************************
1466 * get_lsr_info - get line status register info
1467 *
1468 * Purpose: Let user call ioctl() to get info when the UART physically
1469 * is emptied. On bus types like RS485, the transmitter must
1470 * release the bus after transmitting. This must be done when
1471 * the transmit shift register is empty, not be done when the
1472 * transmit holding register is empty. This functionality
1473 * allows an RS485 driver to be written in user space.
1474 *****************************************************************************/
get_lsr_info(struct edgeport_port * edge_port,unsigned int __user * value)1475 static int get_lsr_info(struct edgeport_port *edge_port,
1476 unsigned int __user *value)
1477 {
1478 unsigned int result = 0;
1479 unsigned long flags;
1480
1481 spin_lock_irqsave(&edge_port->ep_lock, flags);
1482 if (edge_port->maxTxCredits == edge_port->txCredits &&
1483 edge_port->txfifo.count == 0) {
1484 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1485 result = TIOCSER_TEMT;
1486 }
1487 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1488
1489 if (copy_to_user(value, &result, sizeof(int)))
1490 return -EFAULT;
1491 return 0;
1492 }
1493
edge_tiocmset(struct tty_struct * tty,unsigned int set,unsigned int clear)1494 static int edge_tiocmset(struct tty_struct *tty,
1495 unsigned int set, unsigned int clear)
1496 {
1497 struct usb_serial_port *port = tty->driver_data;
1498 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1499 unsigned int mcr;
1500
1501 mcr = edge_port->shadowMCR;
1502 if (set & TIOCM_RTS)
1503 mcr |= MCR_RTS;
1504 if (set & TIOCM_DTR)
1505 mcr |= MCR_DTR;
1506 if (set & TIOCM_LOOP)
1507 mcr |= MCR_LOOPBACK;
1508
1509 if (clear & TIOCM_RTS)
1510 mcr &= ~MCR_RTS;
1511 if (clear & TIOCM_DTR)
1512 mcr &= ~MCR_DTR;
1513 if (clear & TIOCM_LOOP)
1514 mcr &= ~MCR_LOOPBACK;
1515
1516 edge_port->shadowMCR = mcr;
1517
1518 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1519
1520 return 0;
1521 }
1522
edge_tiocmget(struct tty_struct * tty)1523 static int edge_tiocmget(struct tty_struct *tty)
1524 {
1525 struct usb_serial_port *port = tty->driver_data;
1526 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1527 unsigned int result = 0;
1528 unsigned int msr;
1529 unsigned int mcr;
1530
1531 msr = edge_port->shadowMSR;
1532 mcr = edge_port->shadowMCR;
1533 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1534 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1535 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1536 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1537 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1538 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1539
1540 return result;
1541 }
1542
1543 /*****************************************************************************
1544 * SerialIoctl
1545 * this function handles any ioctl calls to the driver
1546 *****************************************************************************/
edge_ioctl(struct tty_struct * tty,unsigned int cmd,unsigned long arg)1547 static int edge_ioctl(struct tty_struct *tty,
1548 unsigned int cmd, unsigned long arg)
1549 {
1550 struct usb_serial_port *port = tty->driver_data;
1551 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1552
1553 switch (cmd) {
1554 case TIOCSERGETLSR:
1555 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1556 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1557 }
1558 return -ENOIOCTLCMD;
1559 }
1560
1561
1562 /*****************************************************************************
1563 * SerialBreak
1564 * this function sends a break to the port
1565 *****************************************************************************/
edge_break(struct tty_struct * tty,int break_state)1566 static int edge_break(struct tty_struct *tty, int break_state)
1567 {
1568 struct usb_serial_port *port = tty->driver_data;
1569 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1570 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1571 int status = 0;
1572
1573 if (!edge_serial->is_epic ||
1574 edge_serial->epic_descriptor.Supports.IOSPChase) {
1575 /* flush and chase */
1576 edge_port->chaseResponsePending = true;
1577
1578 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1579 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1580 if (status == 0) {
1581 /* block until chase finished */
1582 block_until_chase_response(edge_port);
1583 } else {
1584 edge_port->chaseResponsePending = false;
1585 }
1586 }
1587
1588 if (!edge_serial->is_epic ||
1589 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
1590 if (break_state == -1) {
1591 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1592 status = send_iosp_ext_cmd(edge_port,
1593 IOSP_CMD_SET_BREAK, 0);
1594 } else {
1595 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1596 status = send_iosp_ext_cmd(edge_port,
1597 IOSP_CMD_CLEAR_BREAK, 0);
1598 }
1599 if (status)
1600 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1601 __func__);
1602 }
1603
1604 return status;
1605 }
1606
1607
1608 /*****************************************************************************
1609 * process_rcvd_data
1610 * this function handles the data received on the bulk in pipe.
1611 *****************************************************************************/
process_rcvd_data(struct edgeport_serial * edge_serial,unsigned char * buffer,__u16 bufferLength)1612 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1613 unsigned char *buffer, __u16 bufferLength)
1614 {
1615 struct usb_serial *serial = edge_serial->serial;
1616 struct device *dev = &serial->dev->dev;
1617 struct usb_serial_port *port;
1618 struct edgeport_port *edge_port;
1619 __u16 lastBufferLength;
1620 __u16 rxLen;
1621
1622 lastBufferLength = bufferLength + 1;
1623
1624 while (bufferLength > 0) {
1625 /* failsafe incase we get a message that we don't understand */
1626 if (lastBufferLength == bufferLength) {
1627 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1628 break;
1629 }
1630 lastBufferLength = bufferLength;
1631
1632 switch (edge_serial->rxState) {
1633 case EXPECT_HDR1:
1634 edge_serial->rxHeader1 = *buffer;
1635 ++buffer;
1636 --bufferLength;
1637
1638 if (bufferLength == 0) {
1639 edge_serial->rxState = EXPECT_HDR2;
1640 break;
1641 }
1642 fallthrough;
1643 case EXPECT_HDR2:
1644 edge_serial->rxHeader2 = *buffer;
1645 ++buffer;
1646 --bufferLength;
1647
1648 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1649 edge_serial->rxHeader1, edge_serial->rxHeader2);
1650 /* Process depending on whether this header is
1651 * data or status */
1652
1653 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1654 /* Decode this status header and go to
1655 * EXPECT_HDR1 (if we can process the status
1656 * with only 2 bytes), or go to EXPECT_HDR3 to
1657 * get the third byte. */
1658 edge_serial->rxPort =
1659 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1660 edge_serial->rxStatusCode =
1661 IOSP_GET_STATUS_CODE(
1662 edge_serial->rxHeader1);
1663
1664 if (!IOSP_STATUS_IS_2BYTE(
1665 edge_serial->rxStatusCode)) {
1666 /* This status needs additional bytes.
1667 * Save what we have and then wait for
1668 * more data.
1669 */
1670 edge_serial->rxStatusParam
1671 = edge_serial->rxHeader2;
1672 edge_serial->rxState = EXPECT_HDR3;
1673 break;
1674 }
1675 /* We have all the header bytes, process the
1676 status now */
1677 process_rcvd_status(edge_serial,
1678 edge_serial->rxHeader2, 0);
1679 edge_serial->rxState = EXPECT_HDR1;
1680 break;
1681 }
1682
1683 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1684 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1,
1685 edge_serial->rxHeader2);
1686 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__,
1687 edge_serial->rxPort,
1688 edge_serial->rxBytesRemaining);
1689
1690 if (bufferLength == 0) {
1691 edge_serial->rxState = EXPECT_DATA;
1692 break;
1693 }
1694 fallthrough;
1695 case EXPECT_DATA: /* Expect data */
1696 if (bufferLength < edge_serial->rxBytesRemaining) {
1697 rxLen = bufferLength;
1698 /* Expect data to start next buffer */
1699 edge_serial->rxState = EXPECT_DATA;
1700 } else {
1701 /* BufLen >= RxBytesRemaining */
1702 rxLen = edge_serial->rxBytesRemaining;
1703 /* Start another header next time */
1704 edge_serial->rxState = EXPECT_HDR1;
1705 }
1706
1707 bufferLength -= rxLen;
1708 edge_serial->rxBytesRemaining -= rxLen;
1709
1710 /* spit this data back into the tty driver if this
1711 port is open */
1712 if (rxLen && edge_serial->rxPort < serial->num_ports) {
1713 port = serial->port[edge_serial->rxPort];
1714 edge_port = usb_get_serial_port_data(port);
1715 if (edge_port && edge_port->open) {
1716 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1717 __func__, rxLen,
1718 edge_serial->rxPort);
1719 edge_tty_recv(edge_port->port, buffer,
1720 rxLen);
1721 edge_port->port->icount.rx += rxLen;
1722 }
1723 }
1724 buffer += rxLen;
1725 break;
1726
1727 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1728 edge_serial->rxHeader3 = *buffer;
1729 ++buffer;
1730 --bufferLength;
1731
1732 /* We have all the header bytes, process the
1733 status now */
1734 process_rcvd_status(edge_serial,
1735 edge_serial->rxStatusParam,
1736 edge_serial->rxHeader3);
1737 edge_serial->rxState = EXPECT_HDR1;
1738 break;
1739 }
1740 }
1741 }
1742
1743
1744 /*****************************************************************************
1745 * process_rcvd_status
1746 * this function handles the any status messages received on the
1747 * bulk in pipe.
1748 *****************************************************************************/
process_rcvd_status(struct edgeport_serial * edge_serial,__u8 byte2,__u8 byte3)1749 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1750 __u8 byte2, __u8 byte3)
1751 {
1752 struct usb_serial_port *port;
1753 struct edgeport_port *edge_port;
1754 struct tty_struct *tty;
1755 struct device *dev;
1756 __u8 code = edge_serial->rxStatusCode;
1757
1758 /* switch the port pointer to the one being currently talked about */
1759 if (edge_serial->rxPort >= edge_serial->serial->num_ports)
1760 return;
1761 port = edge_serial->serial->port[edge_serial->rxPort];
1762 edge_port = usb_get_serial_port_data(port);
1763 if (edge_port == NULL) {
1764 dev_err(&edge_serial->serial->dev->dev,
1765 "%s - edge_port == NULL for port %d\n",
1766 __func__, edge_serial->rxPort);
1767 return;
1768 }
1769 dev = &port->dev;
1770
1771 if (code == IOSP_EXT_STATUS) {
1772 switch (byte2) {
1773 case IOSP_EXT_STATUS_CHASE_RSP:
1774 /* we want to do EXT status regardless of port
1775 * open/closed */
1776 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1777 __func__, edge_serial->rxPort, byte3);
1778 /* Currently, the only EXT_STATUS is Chase, so process
1779 * here instead of one more call to one more subroutine
1780 * If/when more EXT_STATUS, there'll be more work to do
1781 * Also, we currently clear flag and close the port
1782 * regardless of content of above's Byte3.
1783 * We could choose to do something else when Byte3 says
1784 * Timeout on Chase from Edgeport, like wait longer in
1785 * block_until_chase_response, but for now we don't.
1786 */
1787 edge_port->chaseResponsePending = false;
1788 wake_up(&edge_port->wait_chase);
1789 return;
1790
1791 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1792 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1793 __func__, edge_serial->rxPort, byte3);
1794 /* Port->RxCheckRsp = true; */
1795 return;
1796 }
1797 }
1798
1799 if (code == IOSP_STATUS_OPEN_RSP) {
1800 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1801 edge_port->maxTxCredits = edge_port->txCredits;
1802 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1803 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1804 handle_new_msr(edge_port, byte2);
1805
1806 /* send the current line settings to the port so we are
1807 in sync with any further termios calls */
1808 tty = tty_port_tty_get(&edge_port->port->port);
1809 if (tty) {
1810 change_port_settings(tty,
1811 edge_port, &tty->termios);
1812 tty_kref_put(tty);
1813 }
1814
1815 /* we have completed the open */
1816 edge_port->openPending = false;
1817 edge_port->open = true;
1818 wake_up(&edge_port->wait_open);
1819 return;
1820 }
1821
1822 /* If port is closed, silently discard all rcvd status. We can
1823 * have cases where buffered status is received AFTER the close
1824 * port command is sent to the Edgeport.
1825 */
1826 if (!edge_port->open || edge_port->closePending)
1827 return;
1828
1829 switch (code) {
1830 /* Not currently sent by Edgeport */
1831 case IOSP_STATUS_LSR:
1832 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1833 __func__, edge_serial->rxPort, byte2);
1834 handle_new_lsr(edge_port, false, byte2, 0);
1835 break;
1836
1837 case IOSP_STATUS_LSR_DATA:
1838 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1839 __func__, edge_serial->rxPort, byte2, byte3);
1840 /* byte2 is LSR Register */
1841 /* byte3 is broken data byte */
1842 handle_new_lsr(edge_port, true, byte2, byte3);
1843 break;
1844 /*
1845 * case IOSP_EXT_4_STATUS:
1846 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1847 * __func__, edge_serial->rxPort, byte2, byte3);
1848 * break;
1849 */
1850 case IOSP_STATUS_MSR:
1851 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1852 __func__, edge_serial->rxPort, byte2);
1853 /*
1854 * Process this new modem status and generate appropriate
1855 * events, etc, based on the new status. This routine
1856 * also saves the MSR in Port->ShadowMsr.
1857 */
1858 handle_new_msr(edge_port, byte2);
1859 break;
1860
1861 default:
1862 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1863 break;
1864 }
1865 }
1866
1867
1868 /*****************************************************************************
1869 * edge_tty_recv
1870 * this function passes data on to the tty flip buffer
1871 *****************************************************************************/
edge_tty_recv(struct usb_serial_port * port,unsigned char * data,int length)1872 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1873 int length)
1874 {
1875 int cnt;
1876
1877 cnt = tty_insert_flip_string(&port->port, data, length);
1878 if (cnt < length) {
1879 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1880 __func__, length - cnt);
1881 }
1882 data += cnt;
1883 length -= cnt;
1884
1885 tty_flip_buffer_push(&port->port);
1886 }
1887
1888
1889 /*****************************************************************************
1890 * handle_new_msr
1891 * this function handles any change to the msr register for a port.
1892 *****************************************************************************/
handle_new_msr(struct edgeport_port * edge_port,__u8 newMsr)1893 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1894 {
1895 struct async_icount *icount;
1896
1897 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1898 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1899 icount = &edge_port->port->icount;
1900
1901 /* update input line counters */
1902 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1903 icount->cts++;
1904 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1905 icount->dsr++;
1906 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1907 icount->dcd++;
1908 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1909 icount->rng++;
1910 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1911 }
1912
1913 /* Save the new modem status */
1914 edge_port->shadowMSR = newMsr & 0xf0;
1915 }
1916
1917
1918 /*****************************************************************************
1919 * handle_new_lsr
1920 * this function handles any change to the lsr register for a port.
1921 *****************************************************************************/
handle_new_lsr(struct edgeport_port * edge_port,__u8 lsrData,__u8 lsr,__u8 data)1922 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1923 __u8 lsr, __u8 data)
1924 {
1925 __u8 newLsr = (__u8) (lsr & (__u8)
1926 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1927 struct async_icount *icount;
1928
1929 edge_port->shadowLSR = lsr;
1930
1931 if (newLsr & LSR_BREAK) {
1932 /*
1933 * Parity and Framing errors only count if they
1934 * occur exclusive of a break being
1935 * received.
1936 */
1937 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1938 }
1939
1940 /* Place LSR data byte into Rx buffer */
1941 if (lsrData)
1942 edge_tty_recv(edge_port->port, &data, 1);
1943
1944 /* update input line counters */
1945 icount = &edge_port->port->icount;
1946 if (newLsr & LSR_BREAK)
1947 icount->brk++;
1948 if (newLsr & LSR_OVER_ERR)
1949 icount->overrun++;
1950 if (newLsr & LSR_PAR_ERR)
1951 icount->parity++;
1952 if (newLsr & LSR_FRM_ERR)
1953 icount->frame++;
1954 }
1955
1956
1957 /****************************************************************************
1958 * sram_write
1959 * writes a number of bytes to the Edgeport device's sram starting at the
1960 * given address.
1961 * If successful returns the number of bytes written, otherwise it returns
1962 * a negative error number of the problem.
1963 ****************************************************************************/
sram_write(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,const __u8 * data)1964 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
1965 __u16 length, const __u8 *data)
1966 {
1967 int result;
1968 __u16 current_length;
1969 unsigned char *transfer_buffer;
1970
1971 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
1972
1973 transfer_buffer = kmalloc(64, GFP_KERNEL);
1974 if (!transfer_buffer)
1975 return -ENOMEM;
1976
1977 /* need to split these writes up into 64 byte chunks */
1978 result = 0;
1979 while (length > 0) {
1980 if (length > 64)
1981 current_length = 64;
1982 else
1983 current_length = length;
1984
1985 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
1986 memcpy(transfer_buffer, data, current_length);
1987 result = usb_control_msg(serial->dev,
1988 usb_sndctrlpipe(serial->dev, 0),
1989 USB_REQUEST_ION_WRITE_RAM,
1990 0x40, addr, extAddr, transfer_buffer,
1991 current_length, 300);
1992 if (result < 0)
1993 break;
1994 length -= current_length;
1995 addr += current_length;
1996 data += current_length;
1997 }
1998
1999 kfree(transfer_buffer);
2000 return result;
2001 }
2002
2003
2004 /****************************************************************************
2005 * rom_write
2006 * writes a number of bytes to the Edgeport device's ROM starting at the
2007 * given address.
2008 * If successful returns the number of bytes written, otherwise it returns
2009 * a negative error number of the problem.
2010 ****************************************************************************/
rom_write(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,const __u8 * data)2011 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2012 __u16 length, const __u8 *data)
2013 {
2014 int result;
2015 __u16 current_length;
2016 unsigned char *transfer_buffer;
2017
2018 transfer_buffer = kmalloc(64, GFP_KERNEL);
2019 if (!transfer_buffer)
2020 return -ENOMEM;
2021
2022 /* need to split these writes up into 64 byte chunks */
2023 result = 0;
2024 while (length > 0) {
2025 if (length > 64)
2026 current_length = 64;
2027 else
2028 current_length = length;
2029 memcpy(transfer_buffer, data, current_length);
2030 result = usb_control_msg(serial->dev,
2031 usb_sndctrlpipe(serial->dev, 0),
2032 USB_REQUEST_ION_WRITE_ROM, 0x40,
2033 addr, extAddr,
2034 transfer_buffer, current_length, 300);
2035 if (result < 0)
2036 break;
2037 length -= current_length;
2038 addr += current_length;
2039 data += current_length;
2040 }
2041
2042 kfree(transfer_buffer);
2043 return result;
2044 }
2045
2046
2047 /****************************************************************************
2048 * rom_read
2049 * reads a number of bytes from the Edgeport device starting at the given
2050 * address.
2051 * Returns zero on success or a negative error number.
2052 ****************************************************************************/
rom_read(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,__u8 * data)2053 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2054 __u16 addr, __u16 length, __u8 *data)
2055 {
2056 int result;
2057 __u16 current_length;
2058 unsigned char *transfer_buffer;
2059
2060 transfer_buffer = kmalloc(64, GFP_KERNEL);
2061 if (!transfer_buffer)
2062 return -ENOMEM;
2063
2064 /* need to split these reads up into 64 byte chunks */
2065 result = 0;
2066 while (length > 0) {
2067 if (length > 64)
2068 current_length = 64;
2069 else
2070 current_length = length;
2071 result = usb_control_msg(serial->dev,
2072 usb_rcvctrlpipe(serial->dev, 0),
2073 USB_REQUEST_ION_READ_ROM,
2074 0xC0, addr, extAddr, transfer_buffer,
2075 current_length, 300);
2076 if (result < current_length) {
2077 if (result >= 0)
2078 result = -EIO;
2079 break;
2080 }
2081 memcpy(data, transfer_buffer, current_length);
2082 length -= current_length;
2083 addr += current_length;
2084 data += current_length;
2085
2086 result = 0;
2087 }
2088
2089 kfree(transfer_buffer);
2090 return result;
2091 }
2092
2093
2094 /****************************************************************************
2095 * send_iosp_ext_cmd
2096 * Is used to send a IOSP message to the Edgeport device
2097 ****************************************************************************/
send_iosp_ext_cmd(struct edgeport_port * edge_port,__u8 command,__u8 param)2098 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2099 __u8 command, __u8 param)
2100 {
2101 unsigned char *buffer;
2102 unsigned char *currentCommand;
2103 int length = 0;
2104 int status = 0;
2105
2106 buffer = kmalloc(10, GFP_ATOMIC);
2107 if (!buffer)
2108 return -ENOMEM;
2109
2110 currentCommand = buffer;
2111
2112 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
2113 command, param);
2114
2115 status = write_cmd_usb(edge_port, buffer, length);
2116 if (status) {
2117 /* something bad happened, let's free up the memory */
2118 kfree(buffer);
2119 }
2120
2121 return status;
2122 }
2123
2124
2125 /*****************************************************************************
2126 * write_cmd_usb
2127 * this function writes the given buffer out to the bulk write endpoint.
2128 *****************************************************************************/
write_cmd_usb(struct edgeport_port * edge_port,unsigned char * buffer,int length)2129 static int write_cmd_usb(struct edgeport_port *edge_port,
2130 unsigned char *buffer, int length)
2131 {
2132 struct edgeport_serial *edge_serial =
2133 usb_get_serial_data(edge_port->port->serial);
2134 struct device *dev = &edge_port->port->dev;
2135 int status = 0;
2136 struct urb *urb;
2137
2138 usb_serial_debug_data(dev, __func__, length, buffer);
2139
2140 /* Allocate our next urb */
2141 urb = usb_alloc_urb(0, GFP_ATOMIC);
2142 if (!urb)
2143 return -ENOMEM;
2144
2145 atomic_inc(&CmdUrbs);
2146 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2147 __func__, urb, atomic_read(&CmdUrbs));
2148
2149 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2150 usb_sndbulkpipe(edge_serial->serial->dev,
2151 edge_serial->bulk_out_endpoint),
2152 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2153
2154 edge_port->commandPending = true;
2155 status = usb_submit_urb(urb, GFP_ATOMIC);
2156
2157 if (status) {
2158 /* something went wrong */
2159 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2160 __func__, status);
2161 usb_free_urb(urb);
2162 atomic_dec(&CmdUrbs);
2163 return status;
2164 }
2165
2166 #if 0
2167 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2168
2169 if (edge_port->commandPending) {
2170 /* command timed out */
2171 dev_dbg(dev, "%s - command timed out\n", __func__);
2172 status = -EINVAL;
2173 }
2174 #endif
2175 return status;
2176 }
2177
2178
2179 /*****************************************************************************
2180 * send_cmd_write_baud_rate
2181 * this function sends the proper command to change the baud rate of the
2182 * specified port.
2183 *****************************************************************************/
send_cmd_write_baud_rate(struct edgeport_port * edge_port,int baudRate)2184 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2185 int baudRate)
2186 {
2187 struct edgeport_serial *edge_serial =
2188 usb_get_serial_data(edge_port->port->serial);
2189 struct device *dev = &edge_port->port->dev;
2190 unsigned char *cmdBuffer;
2191 unsigned char *currCmd;
2192 int cmdLen = 0;
2193 int divisor;
2194 int status;
2195 u32 number = edge_port->port->port_number;
2196
2197 if (edge_serial->is_epic &&
2198 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2199 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2200 baudRate);
2201 return 0;
2202 }
2203
2204 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2205
2206 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2207 if (status) {
2208 dev_err(dev, "%s - bad baud rate\n", __func__);
2209 return status;
2210 }
2211
2212 /* Alloc memory for the string of commands. */
2213 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2214 if (!cmdBuffer)
2215 return -ENOMEM;
2216
2217 currCmd = cmdBuffer;
2218
2219 /* Enable access to divisor latch */
2220 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2221
2222 /* Write the divisor itself */
2223 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2224 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2225
2226 /* Restore original value to disable access to divisor latch */
2227 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2228 edge_port->shadowLCR);
2229
2230 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2231 if (status) {
2232 /* something bad happened, let's free up the memory */
2233 kfree(cmdBuffer);
2234 }
2235
2236 return status;
2237 }
2238
2239
2240 /*****************************************************************************
2241 * calc_baud_rate_divisor
2242 * this function calculates the proper baud rate divisor for the specified
2243 * baud rate.
2244 *****************************************************************************/
calc_baud_rate_divisor(struct device * dev,int baudrate,int * divisor)2245 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2246 {
2247 int i;
2248 __u16 custom;
2249
2250 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2251 if (divisor_table[i].BaudRate == baudrate) {
2252 *divisor = divisor_table[i].Divisor;
2253 return 0;
2254 }
2255 }
2256
2257 /* We have tried all of the standard baud rates
2258 * lets try to calculate the divisor for this baud rate
2259 * Make sure the baud rate is reasonable */
2260 if (baudrate > 50 && baudrate < 230400) {
2261 /* get divisor */
2262 custom = (__u16)((230400L + baudrate/2) / baudrate);
2263
2264 *divisor = custom;
2265
2266 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2267 return 0;
2268 }
2269
2270 return -1;
2271 }
2272
2273
2274 /*****************************************************************************
2275 * send_cmd_write_uart_register
2276 * this function builds up a uart register message and sends to the device.
2277 *****************************************************************************/
send_cmd_write_uart_register(struct edgeport_port * edge_port,__u8 regNum,__u8 regValue)2278 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2279 __u8 regNum, __u8 regValue)
2280 {
2281 struct edgeport_serial *edge_serial =
2282 usb_get_serial_data(edge_port->port->serial);
2283 struct device *dev = &edge_port->port->dev;
2284 unsigned char *cmdBuffer;
2285 unsigned char *currCmd;
2286 unsigned long cmdLen = 0;
2287 int status;
2288
2289 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2290 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2291
2292 if (edge_serial->is_epic &&
2293 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2294 regNum == MCR) {
2295 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2296 return 0;
2297 }
2298
2299 if (edge_serial->is_epic &&
2300 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2301 regNum == LCR) {
2302 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2303 return 0;
2304 }
2305
2306 /* Alloc memory for the string of commands. */
2307 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2308 if (cmdBuffer == NULL)
2309 return -ENOMEM;
2310
2311 currCmd = cmdBuffer;
2312
2313 /* Build a cmd in the buffer to write the given register */
2314 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2315 regNum, regValue);
2316
2317 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2318 if (status) {
2319 /* something bad happened, let's free up the memory */
2320 kfree(cmdBuffer);
2321 }
2322
2323 return status;
2324 }
2325
2326
2327 /*****************************************************************************
2328 * change_port_settings
2329 * This routine is called to set the UART on the device to match the
2330 * specified new settings.
2331 *****************************************************************************/
2332
change_port_settings(struct tty_struct * tty,struct edgeport_port * edge_port,const struct ktermios * old_termios)2333 static void change_port_settings(struct tty_struct *tty,
2334 struct edgeport_port *edge_port, const struct ktermios *old_termios)
2335 {
2336 struct device *dev = &edge_port->port->dev;
2337 struct edgeport_serial *edge_serial =
2338 usb_get_serial_data(edge_port->port->serial);
2339 int baud;
2340 unsigned cflag;
2341 __u8 mask = 0xff;
2342 __u8 lData;
2343 __u8 lParity;
2344 __u8 lStop;
2345 __u8 rxFlow;
2346 __u8 txFlow;
2347 int status;
2348
2349 if (!edge_port->open &&
2350 !edge_port->openPending) {
2351 dev_dbg(dev, "%s - port not opened\n", __func__);
2352 return;
2353 }
2354
2355 cflag = tty->termios.c_cflag;
2356
2357 switch (cflag & CSIZE) {
2358 case CS5:
2359 lData = LCR_BITS_5; mask = 0x1f;
2360 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2361 break;
2362 case CS6:
2363 lData = LCR_BITS_6; mask = 0x3f;
2364 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2365 break;
2366 case CS7:
2367 lData = LCR_BITS_7; mask = 0x7f;
2368 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2369 break;
2370 default:
2371 case CS8:
2372 lData = LCR_BITS_8;
2373 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2374 break;
2375 }
2376
2377 lParity = LCR_PAR_NONE;
2378 if (cflag & PARENB) {
2379 if (cflag & CMSPAR) {
2380 if (cflag & PARODD) {
2381 lParity = LCR_PAR_MARK;
2382 dev_dbg(dev, "%s - parity = mark\n", __func__);
2383 } else {
2384 lParity = LCR_PAR_SPACE;
2385 dev_dbg(dev, "%s - parity = space\n", __func__);
2386 }
2387 } else if (cflag & PARODD) {
2388 lParity = LCR_PAR_ODD;
2389 dev_dbg(dev, "%s - parity = odd\n", __func__);
2390 } else {
2391 lParity = LCR_PAR_EVEN;
2392 dev_dbg(dev, "%s - parity = even\n", __func__);
2393 }
2394 } else {
2395 dev_dbg(dev, "%s - parity = none\n", __func__);
2396 }
2397
2398 if (cflag & CSTOPB) {
2399 lStop = LCR_STOP_2;
2400 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2401 } else {
2402 lStop = LCR_STOP_1;
2403 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2404 }
2405
2406 /* figure out the flow control settings */
2407 rxFlow = txFlow = 0x00;
2408 if (cflag & CRTSCTS) {
2409 rxFlow |= IOSP_RX_FLOW_RTS;
2410 txFlow |= IOSP_TX_FLOW_CTS;
2411 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2412 } else {
2413 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2414 }
2415
2416 /* if we are implementing XON/XOFF, set the start and stop character
2417 in the device */
2418 if (I_IXOFF(tty) || I_IXON(tty)) {
2419 unsigned char stop_char = STOP_CHAR(tty);
2420 unsigned char start_char = START_CHAR(tty);
2421
2422 if (!edge_serial->is_epic ||
2423 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
2424 send_iosp_ext_cmd(edge_port,
2425 IOSP_CMD_SET_XON_CHAR, start_char);
2426 send_iosp_ext_cmd(edge_port,
2427 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2428 }
2429
2430 /* if we are implementing INBOUND XON/XOFF */
2431 if (I_IXOFF(tty)) {
2432 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2433 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2434 __func__, start_char, stop_char);
2435 } else {
2436 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2437 }
2438
2439 /* if we are implementing OUTBOUND XON/XOFF */
2440 if (I_IXON(tty)) {
2441 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2442 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2443 __func__, start_char, stop_char);
2444 } else {
2445 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2446 }
2447 }
2448
2449 /* Set flow control to the configured value */
2450 if (!edge_serial->is_epic ||
2451 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
2452 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2453 if (!edge_serial->is_epic ||
2454 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
2455 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2456
2457
2458 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2459 edge_port->shadowLCR |= (lData | lParity | lStop);
2460
2461 edge_port->validDataMask = mask;
2462
2463 /* Send the updated LCR value to the EdgePort */
2464 status = send_cmd_write_uart_register(edge_port, LCR,
2465 edge_port->shadowLCR);
2466 if (status != 0)
2467 return;
2468
2469 /* set up the MCR register and send it to the EdgePort */
2470 edge_port->shadowMCR = MCR_MASTER_IE;
2471 if (cflag & CBAUD)
2472 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2473
2474 status = send_cmd_write_uart_register(edge_port, MCR,
2475 edge_port->shadowMCR);
2476 if (status != 0)
2477 return;
2478
2479 /* Determine divisor based on baud rate */
2480 baud = tty_get_baud_rate(tty);
2481 if (!baud) {
2482 /* pick a default, any default... */
2483 baud = 9600;
2484 }
2485
2486 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2487 status = send_cmd_write_baud_rate(edge_port, baud);
2488 if (status == -1) {
2489 /* Speed change was not possible - put back the old speed */
2490 baud = tty_termios_baud_rate(old_termios);
2491 tty_encode_baud_rate(tty, baud, baud);
2492 }
2493 }
2494
2495
2496 /****************************************************************************
2497 * unicode_to_ascii
2498 * Turns a string from Unicode into ASCII.
2499 * Doesn't do a good job with any characters that are outside the normal
2500 * ASCII range, but it's only for debugging...
2501 * NOTE: expects the unicode in LE format
2502 ****************************************************************************/
unicode_to_ascii(char * string,int buflen,__le16 * unicode,int unicode_size)2503 static void unicode_to_ascii(char *string, int buflen,
2504 __le16 *unicode, int unicode_size)
2505 {
2506 int i;
2507
2508 if (buflen <= 0) /* never happens, but... */
2509 return;
2510 --buflen; /* space for nul */
2511
2512 for (i = 0; i < unicode_size; i++) {
2513 if (i >= buflen)
2514 break;
2515 string[i] = (char)(le16_to_cpu(unicode[i]));
2516 }
2517 string[i] = 0x00;
2518 }
2519
2520
2521 /****************************************************************************
2522 * get_manufacturing_desc
2523 * reads in the manufacturing descriptor and stores it into the serial
2524 * structure.
2525 ****************************************************************************/
get_manufacturing_desc(struct edgeport_serial * edge_serial)2526 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2527 {
2528 struct device *dev = &edge_serial->serial->dev->dev;
2529 int response;
2530
2531 dev_dbg(dev, "getting manufacturer descriptor\n");
2532
2533 response = rom_read(edge_serial->serial,
2534 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2535 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2536 EDGE_MANUF_DESC_LEN,
2537 (__u8 *)(&edge_serial->manuf_descriptor));
2538
2539 if (response < 0) {
2540 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2541 response);
2542 } else {
2543 char string[30];
2544 dev_dbg(dev, "**Manufacturer Descriptor\n");
2545 dev_dbg(dev, " RomSize: %dK\n",
2546 edge_serial->manuf_descriptor.RomSize);
2547 dev_dbg(dev, " RamSize: %dK\n",
2548 edge_serial->manuf_descriptor.RamSize);
2549 dev_dbg(dev, " CpuRev: %d\n",
2550 edge_serial->manuf_descriptor.CpuRev);
2551 dev_dbg(dev, " BoardRev: %d\n",
2552 edge_serial->manuf_descriptor.BoardRev);
2553 dev_dbg(dev, " NumPorts: %d\n",
2554 edge_serial->manuf_descriptor.NumPorts);
2555 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2556 edge_serial->manuf_descriptor.DescDate[0],
2557 edge_serial->manuf_descriptor.DescDate[1],
2558 edge_serial->manuf_descriptor.DescDate[2]+1900);
2559 unicode_to_ascii(string, sizeof(string),
2560 edge_serial->manuf_descriptor.SerialNumber,
2561 edge_serial->manuf_descriptor.SerNumLength/2);
2562 dev_dbg(dev, " SerialNumber: %s\n", string);
2563 unicode_to_ascii(string, sizeof(string),
2564 edge_serial->manuf_descriptor.AssemblyNumber,
2565 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2566 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2567 unicode_to_ascii(string, sizeof(string),
2568 edge_serial->manuf_descriptor.OemAssyNumber,
2569 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2570 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2571 dev_dbg(dev, " UartType: %d\n",
2572 edge_serial->manuf_descriptor.UartType);
2573 dev_dbg(dev, " IonPid: %d\n",
2574 edge_serial->manuf_descriptor.IonPid);
2575 dev_dbg(dev, " IonConfig: %d\n",
2576 edge_serial->manuf_descriptor.IonConfig);
2577 }
2578 }
2579
2580
2581 /****************************************************************************
2582 * get_boot_desc
2583 * reads in the bootloader descriptor and stores it into the serial
2584 * structure.
2585 ****************************************************************************/
get_boot_desc(struct edgeport_serial * edge_serial)2586 static void get_boot_desc(struct edgeport_serial *edge_serial)
2587 {
2588 struct device *dev = &edge_serial->serial->dev->dev;
2589 int response;
2590
2591 dev_dbg(dev, "getting boot descriptor\n");
2592
2593 response = rom_read(edge_serial->serial,
2594 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2595 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2596 EDGE_BOOT_DESC_LEN,
2597 (__u8 *)(&edge_serial->boot_descriptor));
2598
2599 if (response < 0) {
2600 dev_err(dev, "error in getting boot descriptor: %d\n",
2601 response);
2602 } else {
2603 dev_dbg(dev, "**Boot Descriptor:\n");
2604 dev_dbg(dev, " BootCodeLength: %d\n",
2605 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2606 dev_dbg(dev, " MajorVersion: %d\n",
2607 edge_serial->boot_descriptor.MajorVersion);
2608 dev_dbg(dev, " MinorVersion: %d\n",
2609 edge_serial->boot_descriptor.MinorVersion);
2610 dev_dbg(dev, " BuildNumber: %d\n",
2611 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2612 dev_dbg(dev, " Capabilities: 0x%x\n",
2613 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2614 dev_dbg(dev, " UConfig0: %d\n",
2615 edge_serial->boot_descriptor.UConfig0);
2616 dev_dbg(dev, " UConfig1: %d\n",
2617 edge_serial->boot_descriptor.UConfig1);
2618 }
2619 }
2620
2621
2622 /****************************************************************************
2623 * load_application_firmware
2624 * This is called to load the application firmware to the device
2625 ****************************************************************************/
load_application_firmware(struct edgeport_serial * edge_serial)2626 static void load_application_firmware(struct edgeport_serial *edge_serial)
2627 {
2628 struct device *dev = &edge_serial->serial->dev->dev;
2629 const struct ihex_binrec *rec;
2630 const struct firmware *fw;
2631 const char *fw_name;
2632 const char *fw_info;
2633 int response;
2634 __u32 Operaddr;
2635 __u16 build;
2636
2637 switch (edge_serial->product_info.iDownloadFile) {
2638 case EDGE_DOWNLOAD_FILE_I930:
2639 fw_info = "downloading firmware version (930)";
2640 fw_name = "edgeport/down.fw";
2641 break;
2642
2643 case EDGE_DOWNLOAD_FILE_80251:
2644 fw_info = "downloading firmware version (80251)";
2645 fw_name = "edgeport/down2.fw";
2646 break;
2647
2648 case EDGE_DOWNLOAD_FILE_NONE:
2649 dev_dbg(dev, "No download file specified, skipping download\n");
2650 return;
2651
2652 default:
2653 return;
2654 }
2655
2656 response = request_ihex_firmware(&fw, fw_name,
2657 &edge_serial->serial->dev->dev);
2658 if (response) {
2659 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2660 fw_name, response);
2661 return;
2662 }
2663
2664 rec = (const struct ihex_binrec *)fw->data;
2665 build = (rec->data[2] << 8) | rec->data[3];
2666
2667 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2668
2669 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2670 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2671 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2672
2673 for (rec = ihex_next_binrec(rec); rec;
2674 rec = ihex_next_binrec(rec)) {
2675 Operaddr = be32_to_cpu(rec->addr);
2676 response = sram_write(edge_serial->serial,
2677 Operaddr >> 16,
2678 Operaddr & 0xFFFF,
2679 be16_to_cpu(rec->len),
2680 &rec->data[0]);
2681 if (response < 0) {
2682 dev_err(&edge_serial->serial->dev->dev,
2683 "sram_write failed (%x, %x, %d)\n",
2684 Operaddr >> 16, Operaddr & 0xFFFF,
2685 be16_to_cpu(rec->len));
2686 break;
2687 }
2688 }
2689
2690 dev_dbg(dev, "sending exec_dl_code\n");
2691 response = usb_control_msg (edge_serial->serial->dev,
2692 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2693 USB_REQUEST_ION_EXEC_DL_CODE,
2694 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2695
2696 release_firmware(fw);
2697 }
2698
2699
2700 /****************************************************************************
2701 * edge_startup
2702 ****************************************************************************/
edge_startup(struct usb_serial * serial)2703 static int edge_startup(struct usb_serial *serial)
2704 {
2705 struct edgeport_serial *edge_serial;
2706 struct usb_device *dev;
2707 struct device *ddev = &serial->dev->dev;
2708 int i;
2709 int response;
2710 bool interrupt_in_found;
2711 bool bulk_in_found;
2712 bool bulk_out_found;
2713 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2714 EDGE_COMPATIBILITY_MASK1,
2715 EDGE_COMPATIBILITY_MASK2 };
2716
2717 dev = serial->dev;
2718
2719 /* create our private serial structure */
2720 edge_serial = kzalloc_obj(struct edgeport_serial);
2721 if (!edge_serial)
2722 return -ENOMEM;
2723
2724 spin_lock_init(&edge_serial->es_lock);
2725 edge_serial->serial = serial;
2726 usb_set_serial_data(serial, edge_serial);
2727
2728 /* get the name for the device from the device */
2729 i = usb_string(dev, dev->descriptor.iManufacturer,
2730 &edge_serial->name[0], MAX_NAME_LEN+1);
2731 if (i < 0)
2732 i = 0;
2733 edge_serial->name[i++] = ' ';
2734 usb_string(dev, dev->descriptor.iProduct,
2735 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2736
2737 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2738
2739 /* Read the epic descriptor */
2740 if (get_epic_descriptor(edge_serial) < 0) {
2741 /* memcpy descriptor to Supports structures */
2742 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2743 sizeof(struct edge_compatibility_bits));
2744
2745 /* get the manufacturing descriptor for this device */
2746 get_manufacturing_desc(edge_serial);
2747
2748 /* get the boot descriptor */
2749 get_boot_desc(edge_serial);
2750
2751 get_product_info(edge_serial);
2752 }
2753
2754 /* set the number of ports from the manufacturing description */
2755 /* serial->num_ports = serial->product_info.NumPorts; */
2756 if ((!edge_serial->is_epic) &&
2757 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2758 dev_warn(ddev,
2759 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2760 edge_serial->product_info.NumPorts,
2761 serial->num_ports);
2762 }
2763
2764 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2765
2766 /* If not an EPiC device */
2767 if (!edge_serial->is_epic) {
2768 /* now load the application firmware into this device */
2769 load_application_firmware(edge_serial);
2770
2771 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2772
2773 /* Check current Edgeport EEPROM and update if necessary */
2774 update_edgeport_E2PROM(edge_serial);
2775
2776 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2777
2778 /* set the configuration to use #1 */
2779 /* dev_dbg(ddev, "set_configuration 1\n"); */
2780 /* usb_set_configuration (dev, 1); */
2781 }
2782 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2783 edge_serial->product_info.FirmwareMajorVersion,
2784 edge_serial->product_info.FirmwareMinorVersion,
2785 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2786
2787 /* we set up the pointers to the endpoints in the edge_open function,
2788 * as the structures aren't created yet. */
2789
2790 response = 0;
2791
2792 if (edge_serial->is_epic) {
2793 struct usb_host_interface *alt;
2794
2795 alt = serial->interface->cur_altsetting;
2796
2797 /* EPIC thing, set up our interrupt polling now and our read
2798 * urb, so that the device knows it really is connected. */
2799 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2800 for (i = 0; i < alt->desc.bNumEndpoints; ++i) {
2801 struct usb_endpoint_descriptor *endpoint;
2802 int buffer_size;
2803
2804 endpoint = &alt->endpoint[i].desc;
2805 buffer_size = usb_endpoint_maxp(endpoint);
2806 if (!interrupt_in_found &&
2807 (usb_endpoint_is_int_in(endpoint))) {
2808 /* we found a interrupt in endpoint */
2809 dev_dbg(ddev, "found interrupt in\n");
2810
2811 /* not set up yet, so do it now */
2812 edge_serial->interrupt_read_urb =
2813 usb_alloc_urb(0, GFP_KERNEL);
2814 if (!edge_serial->interrupt_read_urb) {
2815 response = -ENOMEM;
2816 break;
2817 }
2818
2819 edge_serial->interrupt_in_buffer =
2820 kmalloc(buffer_size, GFP_KERNEL);
2821 if (!edge_serial->interrupt_in_buffer) {
2822 response = -ENOMEM;
2823 break;
2824 }
2825 edge_serial->interrupt_in_endpoint =
2826 endpoint->bEndpointAddress;
2827
2828 /* set up our interrupt urb */
2829 usb_fill_int_urb(
2830 edge_serial->interrupt_read_urb,
2831 dev,
2832 usb_rcvintpipe(dev,
2833 endpoint->bEndpointAddress),
2834 edge_serial->interrupt_in_buffer,
2835 buffer_size,
2836 edge_interrupt_callback,
2837 edge_serial,
2838 endpoint->bInterval);
2839
2840 interrupt_in_found = true;
2841 }
2842
2843 if (!bulk_in_found &&
2844 (usb_endpoint_is_bulk_in(endpoint))) {
2845 /* we found a bulk in endpoint */
2846 dev_dbg(ddev, "found bulk in\n");
2847
2848 /* not set up yet, so do it now */
2849 edge_serial->read_urb =
2850 usb_alloc_urb(0, GFP_KERNEL);
2851 if (!edge_serial->read_urb) {
2852 response = -ENOMEM;
2853 break;
2854 }
2855
2856 edge_serial->bulk_in_buffer =
2857 kmalloc(buffer_size, GFP_KERNEL);
2858 if (!edge_serial->bulk_in_buffer) {
2859 response = -ENOMEM;
2860 break;
2861 }
2862 edge_serial->bulk_in_endpoint =
2863 endpoint->bEndpointAddress;
2864
2865 /* set up our bulk in urb */
2866 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2867 usb_rcvbulkpipe(dev,
2868 endpoint->bEndpointAddress),
2869 edge_serial->bulk_in_buffer,
2870 usb_endpoint_maxp(endpoint),
2871 edge_bulk_in_callback,
2872 edge_serial);
2873 bulk_in_found = true;
2874 }
2875
2876 if (!bulk_out_found &&
2877 (usb_endpoint_is_bulk_out(endpoint))) {
2878 /* we found a bulk out endpoint */
2879 dev_dbg(ddev, "found bulk out\n");
2880 edge_serial->bulk_out_endpoint =
2881 endpoint->bEndpointAddress;
2882 bulk_out_found = true;
2883 }
2884 }
2885
2886 if (response || !interrupt_in_found || !bulk_in_found ||
2887 !bulk_out_found) {
2888 if (!response) {
2889 dev_err(ddev, "expected endpoints not found\n");
2890 response = -ENODEV;
2891 }
2892
2893 goto error;
2894 }
2895
2896 /* start interrupt read for this edgeport this interrupt will
2897 * continue as long as the edgeport is connected */
2898 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2899 GFP_KERNEL);
2900 if (response) {
2901 dev_err(ddev, "%s - Error %d submitting control urb\n",
2902 __func__, response);
2903
2904 goto error;
2905 }
2906 }
2907 return response;
2908
2909 error:
2910 usb_free_urb(edge_serial->interrupt_read_urb);
2911 kfree(edge_serial->interrupt_in_buffer);
2912
2913 usb_free_urb(edge_serial->read_urb);
2914 kfree(edge_serial->bulk_in_buffer);
2915
2916 kfree(edge_serial);
2917
2918 return response;
2919 }
2920
2921
2922 /****************************************************************************
2923 * edge_disconnect
2924 * This function is called whenever the device is removed from the usb bus.
2925 ****************************************************************************/
edge_disconnect(struct usb_serial * serial)2926 static void edge_disconnect(struct usb_serial *serial)
2927 {
2928 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2929
2930 if (edge_serial->is_epic) {
2931 usb_kill_urb(edge_serial->interrupt_read_urb);
2932 usb_kill_urb(edge_serial->read_urb);
2933 }
2934 }
2935
2936
2937 /****************************************************************************
2938 * edge_release
2939 * This function is called when the device structure is deallocated.
2940 ****************************************************************************/
edge_release(struct usb_serial * serial)2941 static void edge_release(struct usb_serial *serial)
2942 {
2943 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2944
2945 if (edge_serial->is_epic) {
2946 usb_kill_urb(edge_serial->interrupt_read_urb);
2947 usb_free_urb(edge_serial->interrupt_read_urb);
2948 kfree(edge_serial->interrupt_in_buffer);
2949
2950 usb_kill_urb(edge_serial->read_urb);
2951 usb_free_urb(edge_serial->read_urb);
2952 kfree(edge_serial->bulk_in_buffer);
2953 }
2954
2955 kfree(edge_serial);
2956 }
2957
edge_port_probe(struct usb_serial_port * port)2958 static int edge_port_probe(struct usb_serial_port *port)
2959 {
2960 struct edgeport_port *edge_port;
2961
2962 edge_port = kzalloc_obj(*edge_port);
2963 if (!edge_port)
2964 return -ENOMEM;
2965
2966 spin_lock_init(&edge_port->ep_lock);
2967 edge_port->port = port;
2968
2969 usb_set_serial_port_data(port, edge_port);
2970
2971 return 0;
2972 }
2973
edge_port_remove(struct usb_serial_port * port)2974 static void edge_port_remove(struct usb_serial_port *port)
2975 {
2976 struct edgeport_port *edge_port;
2977
2978 edge_port = usb_get_serial_port_data(port);
2979 kfree(edge_port);
2980 }
2981
2982 static struct usb_serial_driver edgeport_2port_device = {
2983 .driver = {
2984 .name = "edgeport_2",
2985 },
2986 .description = "Edgeport 2 port adapter",
2987 .id_table = edgeport_2port_id_table,
2988 .num_ports = 2,
2989 .num_bulk_in = 1,
2990 .num_bulk_out = 1,
2991 .num_interrupt_in = 1,
2992 .open = edge_open,
2993 .close = edge_close,
2994 .throttle = edge_throttle,
2995 .unthrottle = edge_unthrottle,
2996 .attach = edge_startup,
2997 .disconnect = edge_disconnect,
2998 .release = edge_release,
2999 .port_probe = edge_port_probe,
3000 .port_remove = edge_port_remove,
3001 .ioctl = edge_ioctl,
3002 .set_termios = edge_set_termios,
3003 .tiocmget = edge_tiocmget,
3004 .tiocmset = edge_tiocmset,
3005 .tiocmiwait = usb_serial_generic_tiocmiwait,
3006 .get_icount = usb_serial_generic_get_icount,
3007 .write = edge_write,
3008 .write_room = edge_write_room,
3009 .chars_in_buffer = edge_chars_in_buffer,
3010 .break_ctl = edge_break,
3011 .read_int_callback = edge_interrupt_callback,
3012 .read_bulk_callback = edge_bulk_in_callback,
3013 .write_bulk_callback = edge_bulk_out_data_callback,
3014 };
3015
3016 static struct usb_serial_driver edgeport_4port_device = {
3017 .driver = {
3018 .name = "edgeport_4",
3019 },
3020 .description = "Edgeport 4 port adapter",
3021 .id_table = edgeport_4port_id_table,
3022 .num_ports = 4,
3023 .num_bulk_in = 1,
3024 .num_bulk_out = 1,
3025 .num_interrupt_in = 1,
3026 .open = edge_open,
3027 .close = edge_close,
3028 .throttle = edge_throttle,
3029 .unthrottle = edge_unthrottle,
3030 .attach = edge_startup,
3031 .disconnect = edge_disconnect,
3032 .release = edge_release,
3033 .port_probe = edge_port_probe,
3034 .port_remove = edge_port_remove,
3035 .ioctl = edge_ioctl,
3036 .set_termios = edge_set_termios,
3037 .tiocmget = edge_tiocmget,
3038 .tiocmset = edge_tiocmset,
3039 .tiocmiwait = usb_serial_generic_tiocmiwait,
3040 .get_icount = usb_serial_generic_get_icount,
3041 .write = edge_write,
3042 .write_room = edge_write_room,
3043 .chars_in_buffer = edge_chars_in_buffer,
3044 .break_ctl = edge_break,
3045 .read_int_callback = edge_interrupt_callback,
3046 .read_bulk_callback = edge_bulk_in_callback,
3047 .write_bulk_callback = edge_bulk_out_data_callback,
3048 };
3049
3050 static struct usb_serial_driver edgeport_8port_device = {
3051 .driver = {
3052 .name = "edgeport_8",
3053 },
3054 .description = "Edgeport 8 port adapter",
3055 .id_table = edgeport_8port_id_table,
3056 .num_ports = 8,
3057 .num_bulk_in = 1,
3058 .num_bulk_out = 1,
3059 .num_interrupt_in = 1,
3060 .open = edge_open,
3061 .close = edge_close,
3062 .throttle = edge_throttle,
3063 .unthrottle = edge_unthrottle,
3064 .attach = edge_startup,
3065 .disconnect = edge_disconnect,
3066 .release = edge_release,
3067 .port_probe = edge_port_probe,
3068 .port_remove = edge_port_remove,
3069 .ioctl = edge_ioctl,
3070 .set_termios = edge_set_termios,
3071 .tiocmget = edge_tiocmget,
3072 .tiocmset = edge_tiocmset,
3073 .tiocmiwait = usb_serial_generic_tiocmiwait,
3074 .get_icount = usb_serial_generic_get_icount,
3075 .write = edge_write,
3076 .write_room = edge_write_room,
3077 .chars_in_buffer = edge_chars_in_buffer,
3078 .break_ctl = edge_break,
3079 .read_int_callback = edge_interrupt_callback,
3080 .read_bulk_callback = edge_bulk_in_callback,
3081 .write_bulk_callback = edge_bulk_out_data_callback,
3082 };
3083
3084 static struct usb_serial_driver epic_device = {
3085 .driver = {
3086 .name = "epic",
3087 },
3088 .description = "EPiC device",
3089 .id_table = Epic_port_id_table,
3090 .num_ports = 1,
3091 .num_bulk_in = 1,
3092 .num_bulk_out = 1,
3093 .num_interrupt_in = 1,
3094 .open = edge_open,
3095 .close = edge_close,
3096 .throttle = edge_throttle,
3097 .unthrottle = edge_unthrottle,
3098 .attach = edge_startup,
3099 .disconnect = edge_disconnect,
3100 .release = edge_release,
3101 .port_probe = edge_port_probe,
3102 .port_remove = edge_port_remove,
3103 .ioctl = edge_ioctl,
3104 .set_termios = edge_set_termios,
3105 .tiocmget = edge_tiocmget,
3106 .tiocmset = edge_tiocmset,
3107 .tiocmiwait = usb_serial_generic_tiocmiwait,
3108 .get_icount = usb_serial_generic_get_icount,
3109 .write = edge_write,
3110 .write_room = edge_write_room,
3111 .chars_in_buffer = edge_chars_in_buffer,
3112 .break_ctl = edge_break,
3113 .read_int_callback = edge_interrupt_callback,
3114 .read_bulk_callback = edge_bulk_in_callback,
3115 .write_bulk_callback = edge_bulk_out_data_callback,
3116 };
3117
3118 static struct usb_serial_driver * const serial_drivers[] = {
3119 &edgeport_2port_device, &edgeport_4port_device,
3120 &edgeport_8port_device, &epic_device, NULL
3121 };
3122
3123 module_usb_serial_driver(serial_drivers, id_table_combined);
3124
3125 MODULE_AUTHOR(DRIVER_AUTHOR);
3126 MODULE_DESCRIPTION(DRIVER_DESC);
3127 MODULE_LICENSE("GPL");
3128 MODULE_FIRMWARE("edgeport/boot.fw");
3129 MODULE_FIRMWARE("edgeport/boot2.fw");
3130 MODULE_FIRMWARE("edgeport/down.fw");
3131 MODULE_FIRMWARE("edgeport/down2.fw");
3132