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/atomic.h>
29 #include <linux/kernel.h>
30 #include <linux/jiffies.h>
31 #include <linux/errno.h>
32 #include <linux/slab.h>
33 #include <linux/tty.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 = min(edge_port->txCredits + txCredits,
650 edge_port->maxTxCredits);
651 spin_unlock_irqrestore(&edge_port->ep_lock,
652 flags);
653 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
654 __func__, portNumber,
655 edge_port->txCredits);
656
657 /* tell the tty driver that something
658 has changed */
659 tty_port_tty_wakeup(&edge_port->port->port);
660 /* Since we have more credit, check
661 if more data can be sent */
662 send_more_port_data(edge_serial,
663 edge_port);
664 }
665 }
666 position += 2;
667 ++portNumber;
668 }
669 }
670
671 exit:
672 result = usb_submit_urb(urb, GFP_ATOMIC);
673 if (result)
674 dev_err(&urb->dev->dev,
675 "%s - Error %d submitting control urb\n",
676 __func__, result);
677 }
678
679
680 /*****************************************************************************
681 * edge_bulk_in_callback
682 * this is the callback function for when we have received data on the
683 * bulk in endpoint.
684 *****************************************************************************/
edge_bulk_in_callback(struct urb * urb)685 static void edge_bulk_in_callback(struct urb *urb)
686 {
687 struct edgeport_serial *edge_serial = urb->context;
688 struct device *dev;
689 unsigned char *data = urb->transfer_buffer;
690 int retval;
691 __u16 raw_data_length;
692 int status = urb->status;
693 unsigned long flags;
694
695 if (status) {
696 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
697 __func__, status);
698 edge_serial->read_in_progress = false;
699 return;
700 }
701
702 if (urb->actual_length == 0) {
703 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
704 edge_serial->read_in_progress = false;
705 return;
706 }
707
708 dev = &edge_serial->serial->dev->dev;
709 raw_data_length = urb->actual_length;
710
711 usb_serial_debug_data(dev, __func__, raw_data_length, data);
712
713 spin_lock_irqsave(&edge_serial->es_lock, flags);
714
715 /* decrement our rxBytes available by the number that we just got */
716 edge_serial->rxBytesAvail -= raw_data_length;
717
718 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
719 raw_data_length, edge_serial->rxBytesAvail);
720
721 process_rcvd_data(edge_serial, data, urb->actual_length);
722
723 /* check to see if there's any more data for us to read */
724 if (edge_serial->rxBytesAvail > 0) {
725 dev_dbg(dev, "%s - posting a read\n", __func__);
726 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
727 if (retval) {
728 dev_err(dev,
729 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
730 __func__, retval);
731 edge_serial->read_in_progress = false;
732 }
733 } else {
734 edge_serial->read_in_progress = false;
735 }
736
737 spin_unlock_irqrestore(&edge_serial->es_lock, flags);
738 }
739
740
741 /*****************************************************************************
742 * edge_bulk_out_data_callback
743 * this is the callback function for when we have finished sending
744 * serial data on the bulk out endpoint.
745 *****************************************************************************/
edge_bulk_out_data_callback(struct urb * urb)746 static void edge_bulk_out_data_callback(struct urb *urb)
747 {
748 struct edgeport_port *edge_port = urb->context;
749 int status = urb->status;
750
751 if (status) {
752 dev_dbg(&urb->dev->dev,
753 "%s - nonzero write bulk status received: %d\n",
754 __func__, status);
755 }
756
757 if (edge_port->open)
758 tty_port_tty_wakeup(&edge_port->port->port);
759
760 /* Release the Write URB */
761 edge_port->write_in_progress = false;
762
763 /* Check if more data needs to be sent */
764 send_more_port_data((struct edgeport_serial *)
765 (usb_get_serial_data(edge_port->port->serial)), edge_port);
766 }
767
768
769 /*****************************************************************************
770 * BulkOutCmdCallback
771 * this is the callback function for when we have finished sending a
772 * command on the bulk out endpoint.
773 *****************************************************************************/
edge_bulk_out_cmd_callback(struct urb * urb)774 static void edge_bulk_out_cmd_callback(struct urb *urb)
775 {
776 struct edgeport_port *edge_port = urb->context;
777 struct device *dev = &urb->dev->dev;
778 int status = urb->status;
779
780 atomic_dec(&CmdUrbs);
781 dev_dbg(dev, "%s - FREE URB %p (outstanding %d)\n", __func__, urb,
782 atomic_read(&CmdUrbs));
783
784
785 /* clean up the transfer buffer */
786 kfree(urb->transfer_buffer);
787
788 /* Free the command urb */
789 usb_free_urb(urb);
790
791 if (status) {
792 dev_dbg(dev, "%s - nonzero write bulk status received: %d\n",
793 __func__, status);
794 return;
795 }
796
797 /* tell the tty driver that something has changed */
798 if (edge_port->open)
799 tty_port_tty_wakeup(&edge_port->port->port);
800
801 /* we have completed the command */
802 edge_port->commandPending = false;
803 wake_up(&edge_port->wait_command);
804 }
805
806
807 /*****************************************************************************
808 * Driver tty interface functions
809 *****************************************************************************/
810
811 /*****************************************************************************
812 * SerialOpen
813 * this function is called by the tty driver when a port is opened
814 * If successful, we return 0
815 * Otherwise we return a negative error number.
816 *****************************************************************************/
edge_open(struct tty_struct * tty,struct usb_serial_port * port)817 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
818 {
819 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
820 struct device *dev = &port->dev;
821 struct usb_serial *serial;
822 struct edgeport_serial *edge_serial;
823 int response;
824
825 if (edge_port == NULL)
826 return -ENODEV;
827
828 /* see if we've set up our endpoint info yet (can't set it up
829 in edge_startup as the structures were not set up at that time.) */
830 serial = port->serial;
831 edge_serial = usb_get_serial_data(serial);
832 if (edge_serial == NULL)
833 return -ENODEV;
834 if (edge_serial->interrupt_in_buffer == NULL) {
835 struct usb_serial_port *port0 = serial->port[0];
836
837 /* not set up yet, so do it now */
838 edge_serial->interrupt_in_buffer =
839 port0->interrupt_in_buffer;
840 edge_serial->interrupt_in_endpoint =
841 port0->interrupt_in_endpointAddress;
842 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
843 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
844 edge_serial->bulk_in_endpoint =
845 port0->bulk_in_endpointAddress;
846 edge_serial->read_urb = port0->read_urb;
847 edge_serial->bulk_out_endpoint =
848 port0->bulk_out_endpointAddress;
849
850 /* set up our interrupt urb */
851 usb_fill_int_urb(edge_serial->interrupt_read_urb,
852 serial->dev,
853 usb_rcvintpipe(serial->dev,
854 port0->interrupt_in_endpointAddress),
855 port0->interrupt_in_buffer,
856 edge_serial->interrupt_read_urb->transfer_buffer_length,
857 edge_interrupt_callback, edge_serial,
858 edge_serial->interrupt_read_urb->interval);
859
860 /* set up our bulk in urb */
861 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
862 usb_rcvbulkpipe(serial->dev,
863 port0->bulk_in_endpointAddress),
864 port0->bulk_in_buffer,
865 edge_serial->read_urb->transfer_buffer_length,
866 edge_bulk_in_callback, edge_serial);
867 edge_serial->read_in_progress = false;
868
869 /* start interrupt read for this edgeport
870 * this interrupt will continue as long
871 * as the edgeport is connected */
872 response = usb_submit_urb(edge_serial->interrupt_read_urb,
873 GFP_KERNEL);
874 if (response) {
875 dev_err(dev, "%s - Error %d submitting control urb\n",
876 __func__, response);
877 }
878 }
879
880 /* initialize our wait queues */
881 init_waitqueue_head(&edge_port->wait_open);
882 init_waitqueue_head(&edge_port->wait_chase);
883 init_waitqueue_head(&edge_port->wait_command);
884
885 /* initialize our port settings */
886 edge_port->txCredits = 0; /* Can't send any data yet */
887 /* Must always set this bit to enable ints! */
888 edge_port->shadowMCR = MCR_MASTER_IE;
889 edge_port->chaseResponsePending = false;
890
891 /* send a open port command */
892 edge_port->openPending = true;
893 edge_port->open = false;
894 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
895
896 if (response < 0) {
897 dev_err(dev, "%s - error sending open port command\n", __func__);
898 edge_port->openPending = false;
899 return -ENODEV;
900 }
901
902 /* now wait for the port to be completely opened */
903 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
904 OPEN_TIMEOUT);
905
906 if (!edge_port->open) {
907 /* open timed out */
908 dev_dbg(dev, "%s - open timeout\n", __func__);
909 edge_port->openPending = false;
910 return -ENODEV;
911 }
912
913 /* create the txfifo */
914 edge_port->txfifo.head = 0;
915 edge_port->txfifo.tail = 0;
916 edge_port->txfifo.count = 0;
917 edge_port->txfifo.size = edge_port->maxTxCredits;
918 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
919
920 if (!edge_port->txfifo.fifo) {
921 edge_close(port);
922 return -ENOMEM;
923 }
924
925 /* Allocate a URB for the write */
926 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
927 edge_port->write_in_progress = false;
928
929 if (!edge_port->write_urb) {
930 edge_close(port);
931 return -ENOMEM;
932 }
933
934 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
935 __func__, edge_port->maxTxCredits);
936
937 return 0;
938 }
939
940
941 /************************************************************************
942 *
943 * block_until_chase_response
944 *
945 * This function will block the close until one of the following:
946 * 1. Response to our Chase comes from Edgeport
947 * 2. A timeout of 10 seconds without activity has expired
948 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
949 *
950 ************************************************************************/
block_until_chase_response(struct edgeport_port * edge_port)951 static void block_until_chase_response(struct edgeport_port *edge_port)
952 {
953 struct device *dev = &edge_port->port->dev;
954 DEFINE_WAIT(wait);
955 __u16 lastCredits;
956 int timeout = 1*HZ;
957 int loop = 10;
958
959 while (1) {
960 /* Save Last credits */
961 lastCredits = edge_port->txCredits;
962
963 /* Did we get our Chase response */
964 if (!edge_port->chaseResponsePending) {
965 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
966
967 /* did we get all of our credit back? */
968 if (edge_port->txCredits == edge_port->maxTxCredits) {
969 dev_dbg(dev, "%s - Got all credits\n", __func__);
970 return;
971 }
972 }
973
974 /* Block the thread for a while */
975 prepare_to_wait(&edge_port->wait_chase, &wait,
976 TASK_UNINTERRUPTIBLE);
977 schedule_timeout(timeout);
978 finish_wait(&edge_port->wait_chase, &wait);
979
980 if (lastCredits == edge_port->txCredits) {
981 /* No activity.. count down. */
982 loop--;
983 if (loop == 0) {
984 edge_port->chaseResponsePending = false;
985 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
986 return;
987 }
988 } else {
989 /* Reset timeout value back to 10 seconds */
990 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
991 lastCredits, edge_port->txCredits);
992 loop = 10;
993 }
994 }
995 }
996
997
998 /************************************************************************
999 *
1000 * block_until_tx_empty
1001 *
1002 * This function will block the close until one of the following:
1003 * 1. TX count are 0
1004 * 2. The edgeport has stopped
1005 * 3. A timeout of 3 seconds without activity has expired
1006 *
1007 ************************************************************************/
block_until_tx_empty(struct edgeport_port * edge_port)1008 static void block_until_tx_empty(struct edgeport_port *edge_port)
1009 {
1010 struct device *dev = &edge_port->port->dev;
1011 DEFINE_WAIT(wait);
1012 struct TxFifo *fifo = &edge_port->txfifo;
1013 __u32 lastCount;
1014 int timeout = HZ/10;
1015 int loop = 30;
1016
1017 while (1) {
1018 /* Save Last count */
1019 lastCount = fifo->count;
1020
1021 /* Is the Edgeport Buffer empty? */
1022 if (lastCount == 0) {
1023 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1024 return;
1025 }
1026
1027 /* Block the thread for a while */
1028 prepare_to_wait(&edge_port->wait_chase, &wait,
1029 TASK_UNINTERRUPTIBLE);
1030 schedule_timeout(timeout);
1031 finish_wait(&edge_port->wait_chase, &wait);
1032
1033 dev_dbg(dev, "%s wait\n", __func__);
1034
1035 if (lastCount == fifo->count) {
1036 /* No activity.. count down. */
1037 loop--;
1038 if (loop == 0) {
1039 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1040 return;
1041 }
1042 } else {
1043 /* Reset timeout value back to seconds */
1044 loop = 30;
1045 }
1046 }
1047 }
1048
1049
1050 /*****************************************************************************
1051 * edge_close
1052 * this function is called by the tty driver when a port is closed
1053 *****************************************************************************/
edge_close(struct usb_serial_port * port)1054 static void edge_close(struct usb_serial_port *port)
1055 {
1056 struct edgeport_serial *edge_serial;
1057 struct edgeport_port *edge_port;
1058 int status;
1059
1060 edge_serial = usb_get_serial_data(port->serial);
1061 edge_port = usb_get_serial_port_data(port);
1062 if (edge_serial == NULL || edge_port == NULL)
1063 return;
1064
1065 /* block until tx is empty */
1066 block_until_tx_empty(edge_port);
1067
1068 edge_port->closePending = true;
1069
1070 if (!edge_serial->is_epic ||
1071 edge_serial->epic_descriptor.Supports.IOSPChase) {
1072 /* flush and chase */
1073 edge_port->chaseResponsePending = true;
1074
1075 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1076 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1077 if (status == 0)
1078 /* block until chase finished */
1079 block_until_chase_response(edge_port);
1080 else
1081 edge_port->chaseResponsePending = false;
1082 }
1083
1084 if (!edge_serial->is_epic ||
1085 edge_serial->epic_descriptor.Supports.IOSPClose) {
1086 /* close the port */
1087 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1088 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1089 }
1090
1091 /* port->close = true; */
1092 edge_port->closePending = false;
1093 edge_port->open = false;
1094 edge_port->openPending = false;
1095
1096 usb_kill_urb(edge_port->write_urb);
1097
1098 if (edge_port->write_urb) {
1099 /* if this urb had a transfer buffer already
1100 (old transfer) free it */
1101 kfree(edge_port->write_urb->transfer_buffer);
1102 usb_free_urb(edge_port->write_urb);
1103 edge_port->write_urb = NULL;
1104 }
1105 kfree(edge_port->txfifo.fifo);
1106 edge_port->txfifo.fifo = NULL;
1107 }
1108
1109 /*****************************************************************************
1110 * SerialWrite
1111 * this function is called by the tty driver when data should be written
1112 * to the port.
1113 * If successful, we return the number of bytes written, otherwise we
1114 * return a negative error number.
1115 *****************************************************************************/
edge_write(struct tty_struct * tty,struct usb_serial_port * port,const unsigned char * data,int count)1116 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1117 const unsigned char *data, int count)
1118 {
1119 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1120 struct TxFifo *fifo;
1121 int copySize;
1122 int bytesleft;
1123 int firsthalf;
1124 int secondhalf;
1125 unsigned long flags;
1126
1127 if (edge_port == NULL)
1128 return -ENODEV;
1129
1130 /* get a pointer to the Tx fifo */
1131 fifo = &edge_port->txfifo;
1132
1133 spin_lock_irqsave(&edge_port->ep_lock, flags);
1134
1135 /* calculate number of bytes to put in fifo */
1136 copySize = min_t(unsigned int, count,
1137 (edge_port->txCredits - fifo->count));
1138
1139 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1140 __func__, count, edge_port->txCredits - fifo->count, copySize);
1141
1142 /* catch writes of 0 bytes which the tty driver likes to give us,
1143 and when txCredits is empty */
1144 if (copySize == 0) {
1145 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1146 goto finish_write;
1147 }
1148
1149 /* queue the data
1150 * since we can never overflow the buffer we do not have to check for a
1151 * full condition
1152 *
1153 * the copy is done is two parts -- first fill to the end of the buffer
1154 * then copy the reset from the start of the buffer
1155 */
1156 bytesleft = fifo->size - fifo->head;
1157 firsthalf = min(bytesleft, copySize);
1158 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1159 firsthalf, bytesleft);
1160
1161 /* now copy our data */
1162 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1163 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1164
1165 /* update the index and size */
1166 fifo->head += firsthalf;
1167 fifo->count += firsthalf;
1168
1169 /* wrap the index */
1170 if (fifo->head == fifo->size)
1171 fifo->head = 0;
1172
1173 secondhalf = copySize-firsthalf;
1174
1175 if (secondhalf) {
1176 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1177 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1178 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1179 /* update the index and size */
1180 fifo->count += secondhalf;
1181 fifo->head += secondhalf;
1182 /* No need to check for wrap since we can not get to end of
1183 * the fifo in this part
1184 */
1185 }
1186
1187 finish_write:
1188 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1189
1190 send_more_port_data((struct edgeport_serial *)
1191 usb_get_serial_data(port->serial), edge_port);
1192
1193 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1194 __func__, copySize, edge_port->txCredits, fifo->count);
1195
1196 return copySize;
1197 }
1198
1199
1200 /************************************************************************
1201 *
1202 * send_more_port_data()
1203 *
1204 * This routine attempts to write additional UART transmit data
1205 * to a port over the USB bulk pipe. It is called (1) when new
1206 * data has been written to a port's TxBuffer from higher layers
1207 * (2) when the peripheral sends us additional TxCredits indicating
1208 * that it can accept more Tx data for a given port; and (3) when
1209 * a bulk write completes successfully and we want to see if we
1210 * can transmit more.
1211 *
1212 ************************************************************************/
send_more_port_data(struct edgeport_serial * edge_serial,struct edgeport_port * edge_port)1213 static void send_more_port_data(struct edgeport_serial *edge_serial,
1214 struct edgeport_port *edge_port)
1215 {
1216 struct TxFifo *fifo = &edge_port->txfifo;
1217 struct device *dev = &edge_port->port->dev;
1218 struct urb *urb;
1219 unsigned char *buffer;
1220 int status;
1221 int count;
1222 int bytesleft;
1223 int firsthalf;
1224 int secondhalf;
1225 unsigned long flags;
1226
1227 spin_lock_irqsave(&edge_port->ep_lock, flags);
1228
1229 if (edge_port->write_in_progress ||
1230 !edge_port->open ||
1231 (fifo->count == 0)) {
1232 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1233 __func__, fifo->count, edge_port->write_in_progress);
1234 goto exit_send;
1235 }
1236
1237 /* since the amount of data in the fifo will always fit into the
1238 * edgeport buffer we do not need to check the write length
1239 *
1240 * Do we have enough credits for this port to make it worthwhile
1241 * to bother queueing a write. If it's too small, say a few bytes,
1242 * it's better to wait for more credits so we can do a larger write.
1243 */
1244 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1245 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1246 __func__, fifo->count, edge_port->txCredits);
1247 goto exit_send;
1248 }
1249
1250 /* lock this write */
1251 edge_port->write_in_progress = true;
1252
1253 /* get a pointer to the write_urb */
1254 urb = edge_port->write_urb;
1255
1256 /* make sure transfer buffer is freed */
1257 kfree(urb->transfer_buffer);
1258 urb->transfer_buffer = NULL;
1259
1260 /* build the data header for the buffer and port that we are about
1261 to send out */
1262 count = fifo->count;
1263 buffer = kmalloc(count+2, GFP_ATOMIC);
1264 if (!buffer) {
1265 edge_port->write_in_progress = false;
1266 goto exit_send;
1267 }
1268 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1269 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1270
1271 /* now copy our data */
1272 bytesleft = fifo->size - fifo->tail;
1273 firsthalf = min(bytesleft, count);
1274 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1275 fifo->tail += firsthalf;
1276 fifo->count -= firsthalf;
1277 if (fifo->tail == fifo->size)
1278 fifo->tail = 0;
1279
1280 secondhalf = count-firsthalf;
1281 if (secondhalf) {
1282 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1283 secondhalf);
1284 fifo->tail += secondhalf;
1285 fifo->count -= secondhalf;
1286 }
1287
1288 if (count)
1289 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1290
1291 /* fill up the urb with all of our data and submit it */
1292 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1293 usb_sndbulkpipe(edge_serial->serial->dev,
1294 edge_serial->bulk_out_endpoint),
1295 buffer, count+2,
1296 edge_bulk_out_data_callback, edge_port);
1297
1298 /* decrement the number of credits we have by the number we just sent */
1299 edge_port->txCredits -= count;
1300 edge_port->port->icount.tx += count;
1301
1302 status = usb_submit_urb(urb, GFP_ATOMIC);
1303 if (status) {
1304 /* something went wrong */
1305 dev_err_console(edge_port->port,
1306 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1307 __func__, status);
1308 edge_port->write_in_progress = false;
1309
1310 /* revert the credits as something bad happened. */
1311 edge_port->txCredits += count;
1312 edge_port->port->icount.tx -= count;
1313 }
1314 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1315 __func__, count, edge_port->txCredits, fifo->count);
1316
1317 exit_send:
1318 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1319 }
1320
1321
1322 /*****************************************************************************
1323 * edge_write_room
1324 * this function is called by the tty driver when it wants to know how
1325 * many bytes of data we can accept for a specific port.
1326 *****************************************************************************/
edge_write_room(struct tty_struct * tty)1327 static unsigned int edge_write_room(struct tty_struct *tty)
1328 {
1329 struct usb_serial_port *port = tty->driver_data;
1330 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1331 unsigned int room;
1332 unsigned long flags;
1333
1334 /* total of both buffers is still txCredit */
1335 spin_lock_irqsave(&edge_port->ep_lock, flags);
1336 room = edge_port->txCredits - edge_port->txfifo.count;
1337 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1338
1339 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
1340 return room;
1341 }
1342
1343
1344 /*****************************************************************************
1345 * edge_chars_in_buffer
1346 * this function is called by the tty driver when it wants to know how
1347 * many bytes of data we currently have outstanding in the port (data that
1348 * has been written, but hasn't made it out the port yet)
1349 *****************************************************************************/
edge_chars_in_buffer(struct tty_struct * tty)1350 static unsigned int edge_chars_in_buffer(struct tty_struct *tty)
1351 {
1352 struct usb_serial_port *port = tty->driver_data;
1353 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1354 unsigned int num_chars;
1355 unsigned long flags;
1356
1357 spin_lock_irqsave(&edge_port->ep_lock, flags);
1358 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1359 edge_port->txfifo.count;
1360 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1361 if (num_chars) {
1362 dev_dbg(&port->dev, "%s - returns %u\n", __func__, num_chars);
1363 }
1364
1365 return num_chars;
1366 }
1367
1368
1369 /*****************************************************************************
1370 * SerialThrottle
1371 * this function is called by the tty driver when it wants to stop the data
1372 * being read from the port.
1373 *****************************************************************************/
edge_throttle(struct tty_struct * tty)1374 static void edge_throttle(struct tty_struct *tty)
1375 {
1376 struct usb_serial_port *port = tty->driver_data;
1377 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1378 int status;
1379
1380 if (edge_port == NULL)
1381 return;
1382
1383 if (!edge_port->open) {
1384 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1385 return;
1386 }
1387
1388 /* if we are implementing XON/XOFF, send the stop character */
1389 if (I_IXOFF(tty)) {
1390 unsigned char stop_char = STOP_CHAR(tty);
1391 status = edge_write(tty, port, &stop_char, 1);
1392 if (status <= 0)
1393 return;
1394 }
1395
1396 /* if we are implementing RTS/CTS, toggle that line */
1397 if (C_CRTSCTS(tty)) {
1398 edge_port->shadowMCR &= ~MCR_RTS;
1399 status = send_cmd_write_uart_register(edge_port, MCR,
1400 edge_port->shadowMCR);
1401 if (status != 0)
1402 return;
1403 }
1404 }
1405
1406
1407 /*****************************************************************************
1408 * edge_unthrottle
1409 * this function is called by the tty driver when it wants to resume the
1410 * data being read from the port (called after SerialThrottle is called)
1411 *****************************************************************************/
edge_unthrottle(struct tty_struct * tty)1412 static void edge_unthrottle(struct tty_struct *tty)
1413 {
1414 struct usb_serial_port *port = tty->driver_data;
1415 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1416 int status;
1417
1418 if (edge_port == NULL)
1419 return;
1420
1421 if (!edge_port->open) {
1422 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1423 return;
1424 }
1425
1426 /* if we are implementing XON/XOFF, send the start character */
1427 if (I_IXOFF(tty)) {
1428 unsigned char start_char = START_CHAR(tty);
1429 status = edge_write(tty, port, &start_char, 1);
1430 if (status <= 0)
1431 return;
1432 }
1433 /* if we are implementing RTS/CTS, toggle that line */
1434 if (C_CRTSCTS(tty)) {
1435 edge_port->shadowMCR |= MCR_RTS;
1436 send_cmd_write_uart_register(edge_port, MCR,
1437 edge_port->shadowMCR);
1438 }
1439 }
1440
1441
1442 /*****************************************************************************
1443 * SerialSetTermios
1444 * this function is called by the tty driver when it wants to change
1445 * the termios structure
1446 *****************************************************************************/
edge_set_termios(struct tty_struct * tty,struct usb_serial_port * port,const struct ktermios * old_termios)1447 static void edge_set_termios(struct tty_struct *tty,
1448 struct usb_serial_port *port,
1449 const struct ktermios *old_termios)
1450 {
1451 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1452
1453 if (edge_port == NULL)
1454 return;
1455
1456 if (!edge_port->open) {
1457 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1458 return;
1459 }
1460
1461 /* change the port settings to the new ones specified */
1462 change_port_settings(tty, edge_port, old_termios);
1463 }
1464
1465
1466 /*****************************************************************************
1467 * get_lsr_info - get line status register info
1468 *
1469 * Purpose: Let user call ioctl() to get info when the UART physically
1470 * is emptied. On bus types like RS485, the transmitter must
1471 * release the bus after transmitting. This must be done when
1472 * the transmit shift register is empty, not be done when the
1473 * transmit holding register is empty. This functionality
1474 * allows an RS485 driver to be written in user space.
1475 *****************************************************************************/
get_lsr_info(struct edgeport_port * edge_port,unsigned int __user * value)1476 static int get_lsr_info(struct edgeport_port *edge_port,
1477 unsigned int __user *value)
1478 {
1479 unsigned int result = 0;
1480 unsigned long flags;
1481
1482 spin_lock_irqsave(&edge_port->ep_lock, flags);
1483 if (edge_port->maxTxCredits == edge_port->txCredits &&
1484 edge_port->txfifo.count == 0) {
1485 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1486 result = TIOCSER_TEMT;
1487 }
1488 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1489
1490 if (copy_to_user(value, &result, sizeof(int)))
1491 return -EFAULT;
1492 return 0;
1493 }
1494
edge_tiocmset(struct tty_struct * tty,unsigned int set,unsigned int clear)1495 static int edge_tiocmset(struct tty_struct *tty,
1496 unsigned int set, unsigned int clear)
1497 {
1498 struct usb_serial_port *port = tty->driver_data;
1499 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1500 unsigned int mcr;
1501
1502 mcr = edge_port->shadowMCR;
1503 if (set & TIOCM_RTS)
1504 mcr |= MCR_RTS;
1505 if (set & TIOCM_DTR)
1506 mcr |= MCR_DTR;
1507 if (set & TIOCM_LOOP)
1508 mcr |= MCR_LOOPBACK;
1509
1510 if (clear & TIOCM_RTS)
1511 mcr &= ~MCR_RTS;
1512 if (clear & TIOCM_DTR)
1513 mcr &= ~MCR_DTR;
1514 if (clear & TIOCM_LOOP)
1515 mcr &= ~MCR_LOOPBACK;
1516
1517 edge_port->shadowMCR = mcr;
1518
1519 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1520
1521 return 0;
1522 }
1523
edge_tiocmget(struct tty_struct * tty)1524 static int edge_tiocmget(struct tty_struct *tty)
1525 {
1526 struct usb_serial_port *port = tty->driver_data;
1527 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1528 unsigned int result = 0;
1529 unsigned int msr;
1530 unsigned int mcr;
1531
1532 msr = edge_port->shadowMSR;
1533 mcr = edge_port->shadowMCR;
1534 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1535 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1536 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1537 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1538 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1539 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1540
1541 return result;
1542 }
1543
1544 /*****************************************************************************
1545 * SerialIoctl
1546 * this function handles any ioctl calls to the driver
1547 *****************************************************************************/
edge_ioctl(struct tty_struct * tty,unsigned int cmd,unsigned long arg)1548 static int edge_ioctl(struct tty_struct *tty,
1549 unsigned int cmd, unsigned long arg)
1550 {
1551 struct usb_serial_port *port = tty->driver_data;
1552 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1553
1554 switch (cmd) {
1555 case TIOCSERGETLSR:
1556 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1557 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1558 }
1559 return -ENOIOCTLCMD;
1560 }
1561
1562
1563 /*****************************************************************************
1564 * SerialBreak
1565 * this function sends a break to the port
1566 *****************************************************************************/
edge_break(struct tty_struct * tty,int break_state)1567 static int edge_break(struct tty_struct *tty, int break_state)
1568 {
1569 struct usb_serial_port *port = tty->driver_data;
1570 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1571 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1572 int status = 0;
1573
1574 if (!edge_serial->is_epic ||
1575 edge_serial->epic_descriptor.Supports.IOSPChase) {
1576 /* flush and chase */
1577 edge_port->chaseResponsePending = true;
1578
1579 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1580 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1581 if (status == 0) {
1582 /* block until chase finished */
1583 block_until_chase_response(edge_port);
1584 } else {
1585 edge_port->chaseResponsePending = false;
1586 }
1587 }
1588
1589 if (!edge_serial->is_epic ||
1590 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
1591 if (break_state == -1) {
1592 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1593 status = send_iosp_ext_cmd(edge_port,
1594 IOSP_CMD_SET_BREAK, 0);
1595 } else {
1596 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1597 status = send_iosp_ext_cmd(edge_port,
1598 IOSP_CMD_CLEAR_BREAK, 0);
1599 }
1600 if (status)
1601 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1602 __func__);
1603 }
1604
1605 return status;
1606 }
1607
1608
1609 /*****************************************************************************
1610 * process_rcvd_data
1611 * this function handles the data received on the bulk in pipe.
1612 *****************************************************************************/
process_rcvd_data(struct edgeport_serial * edge_serial,unsigned char * buffer,__u16 bufferLength)1613 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1614 unsigned char *buffer, __u16 bufferLength)
1615 {
1616 struct usb_serial *serial = edge_serial->serial;
1617 struct device *dev = &serial->dev->dev;
1618 struct usb_serial_port *port;
1619 struct edgeport_port *edge_port;
1620 __u16 lastBufferLength;
1621 __u16 rxLen;
1622
1623 lastBufferLength = bufferLength + 1;
1624
1625 while (bufferLength > 0) {
1626 /* failsafe incase we get a message that we don't understand */
1627 if (lastBufferLength == bufferLength) {
1628 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1629 break;
1630 }
1631 lastBufferLength = bufferLength;
1632
1633 switch (edge_serial->rxState) {
1634 case EXPECT_HDR1:
1635 edge_serial->rxHeader1 = *buffer;
1636 ++buffer;
1637 --bufferLength;
1638
1639 if (bufferLength == 0) {
1640 edge_serial->rxState = EXPECT_HDR2;
1641 break;
1642 }
1643 fallthrough;
1644 case EXPECT_HDR2:
1645 edge_serial->rxHeader2 = *buffer;
1646 ++buffer;
1647 --bufferLength;
1648
1649 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1650 edge_serial->rxHeader1, edge_serial->rxHeader2);
1651 /* Process depending on whether this header is
1652 * data or status */
1653
1654 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1655 /* Decode this status header and go to
1656 * EXPECT_HDR1 (if we can process the status
1657 * with only 2 bytes), or go to EXPECT_HDR3 to
1658 * get the third byte. */
1659 edge_serial->rxPort =
1660 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1661 edge_serial->rxStatusCode =
1662 IOSP_GET_STATUS_CODE(
1663 edge_serial->rxHeader1);
1664
1665 if (!IOSP_STATUS_IS_2BYTE(
1666 edge_serial->rxStatusCode)) {
1667 /* This status needs additional bytes.
1668 * Save what we have and then wait for
1669 * more data.
1670 */
1671 edge_serial->rxStatusParam
1672 = edge_serial->rxHeader2;
1673 edge_serial->rxState = EXPECT_HDR3;
1674 break;
1675 }
1676 /* We have all the header bytes, process the
1677 status now */
1678 process_rcvd_status(edge_serial,
1679 edge_serial->rxHeader2, 0);
1680 edge_serial->rxState = EXPECT_HDR1;
1681 break;
1682 }
1683
1684 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1685 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1,
1686 edge_serial->rxHeader2);
1687 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__,
1688 edge_serial->rxPort,
1689 edge_serial->rxBytesRemaining);
1690
1691 if (bufferLength == 0) {
1692 edge_serial->rxState = EXPECT_DATA;
1693 break;
1694 }
1695 fallthrough;
1696 case EXPECT_DATA: /* Expect data */
1697 if (bufferLength < edge_serial->rxBytesRemaining) {
1698 rxLen = bufferLength;
1699 /* Expect data to start next buffer */
1700 edge_serial->rxState = EXPECT_DATA;
1701 } else {
1702 /* BufLen >= RxBytesRemaining */
1703 rxLen = edge_serial->rxBytesRemaining;
1704 /* Start another header next time */
1705 edge_serial->rxState = EXPECT_HDR1;
1706 }
1707
1708 bufferLength -= rxLen;
1709 edge_serial->rxBytesRemaining -= rxLen;
1710
1711 /* spit this data back into the tty driver if this
1712 port is open */
1713 if (rxLen && edge_serial->rxPort < serial->num_ports) {
1714 port = serial->port[edge_serial->rxPort];
1715 edge_port = usb_get_serial_port_data(port);
1716 if (edge_port && edge_port->open) {
1717 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1718 __func__, rxLen,
1719 edge_serial->rxPort);
1720 edge_tty_recv(edge_port->port, buffer,
1721 rxLen);
1722 edge_port->port->icount.rx += rxLen;
1723 }
1724 }
1725 buffer += rxLen;
1726 break;
1727
1728 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1729 edge_serial->rxHeader3 = *buffer;
1730 ++buffer;
1731 --bufferLength;
1732
1733 /* We have all the header bytes, process the
1734 status now */
1735 process_rcvd_status(edge_serial,
1736 edge_serial->rxStatusParam,
1737 edge_serial->rxHeader3);
1738 edge_serial->rxState = EXPECT_HDR1;
1739 break;
1740 }
1741 }
1742 }
1743
1744
1745 /*****************************************************************************
1746 * process_rcvd_status
1747 * this function handles the any status messages received on the
1748 * bulk in pipe.
1749 *****************************************************************************/
process_rcvd_status(struct edgeport_serial * edge_serial,__u8 byte2,__u8 byte3)1750 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1751 __u8 byte2, __u8 byte3)
1752 {
1753 struct usb_serial_port *port;
1754 struct edgeport_port *edge_port;
1755 struct tty_struct *tty;
1756 struct device *dev;
1757 __u8 code = edge_serial->rxStatusCode;
1758
1759 /* switch the port pointer to the one being currently talked about */
1760 if (edge_serial->rxPort >= edge_serial->serial->num_ports)
1761 return;
1762 port = edge_serial->serial->port[edge_serial->rxPort];
1763 edge_port = usb_get_serial_port_data(port);
1764 if (edge_port == NULL) {
1765 dev_err(&edge_serial->serial->dev->dev,
1766 "%s - edge_port == NULL for port %d\n",
1767 __func__, edge_serial->rxPort);
1768 return;
1769 }
1770 dev = &port->dev;
1771
1772 if (code == IOSP_EXT_STATUS) {
1773 switch (byte2) {
1774 case IOSP_EXT_STATUS_CHASE_RSP:
1775 /* we want to do EXT status regardless of port
1776 * open/closed */
1777 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1778 __func__, edge_serial->rxPort, byte3);
1779 /* Currently, the only EXT_STATUS is Chase, so process
1780 * here instead of one more call to one more subroutine
1781 * If/when more EXT_STATUS, there'll be more work to do
1782 * Also, we currently clear flag and close the port
1783 * regardless of content of above's Byte3.
1784 * We could choose to do something else when Byte3 says
1785 * Timeout on Chase from Edgeport, like wait longer in
1786 * block_until_chase_response, but for now we don't.
1787 */
1788 edge_port->chaseResponsePending = false;
1789 wake_up(&edge_port->wait_chase);
1790 return;
1791
1792 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1793 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1794 __func__, edge_serial->rxPort, byte3);
1795 /* Port->RxCheckRsp = true; */
1796 return;
1797 }
1798 }
1799
1800 if (code == IOSP_STATUS_OPEN_RSP) {
1801 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1802 edge_port->maxTxCredits = edge_port->txCredits;
1803 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1804 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1805 handle_new_msr(edge_port, byte2);
1806
1807 /* send the current line settings to the port so we are
1808 in sync with any further termios calls */
1809 tty = tty_port_tty_get(&edge_port->port->port);
1810 if (tty) {
1811 change_port_settings(tty,
1812 edge_port, &tty->termios);
1813 tty_kref_put(tty);
1814 }
1815
1816 /* we have completed the open */
1817 edge_port->openPending = false;
1818 edge_port->open = true;
1819 wake_up(&edge_port->wait_open);
1820 return;
1821 }
1822
1823 /* If port is closed, silently discard all rcvd status. We can
1824 * have cases where buffered status is received AFTER the close
1825 * port command is sent to the Edgeport.
1826 */
1827 if (!edge_port->open || edge_port->closePending)
1828 return;
1829
1830 switch (code) {
1831 /* Not currently sent by Edgeport */
1832 case IOSP_STATUS_LSR:
1833 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1834 __func__, edge_serial->rxPort, byte2);
1835 handle_new_lsr(edge_port, false, byte2, 0);
1836 break;
1837
1838 case IOSP_STATUS_LSR_DATA:
1839 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1840 __func__, edge_serial->rxPort, byte2, byte3);
1841 /* byte2 is LSR Register */
1842 /* byte3 is broken data byte */
1843 handle_new_lsr(edge_port, true, byte2, byte3);
1844 break;
1845 /*
1846 * case IOSP_EXT_4_STATUS:
1847 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1848 * __func__, edge_serial->rxPort, byte2, byte3);
1849 * break;
1850 */
1851 case IOSP_STATUS_MSR:
1852 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1853 __func__, edge_serial->rxPort, byte2);
1854 /*
1855 * Process this new modem status and generate appropriate
1856 * events, etc, based on the new status. This routine
1857 * also saves the MSR in Port->ShadowMsr.
1858 */
1859 handle_new_msr(edge_port, byte2);
1860 break;
1861
1862 default:
1863 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1864 break;
1865 }
1866 }
1867
1868
1869 /*****************************************************************************
1870 * edge_tty_recv
1871 * this function passes data on to the tty flip buffer
1872 *****************************************************************************/
edge_tty_recv(struct usb_serial_port * port,unsigned char * data,int length)1873 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1874 int length)
1875 {
1876 int cnt;
1877
1878 cnt = tty_insert_flip_string(&port->port, data, length);
1879 if (cnt < length) {
1880 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1881 __func__, length - cnt);
1882 }
1883 data += cnt;
1884 length -= cnt;
1885
1886 tty_flip_buffer_push(&port->port);
1887 }
1888
1889
1890 /*****************************************************************************
1891 * handle_new_msr
1892 * this function handles any change to the msr register for a port.
1893 *****************************************************************************/
handle_new_msr(struct edgeport_port * edge_port,__u8 newMsr)1894 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1895 {
1896 struct async_icount *icount;
1897
1898 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1899 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1900 icount = &edge_port->port->icount;
1901
1902 /* update input line counters */
1903 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1904 icount->cts++;
1905 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1906 icount->dsr++;
1907 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1908 icount->dcd++;
1909 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1910 icount->rng++;
1911 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1912 }
1913
1914 /* Save the new modem status */
1915 edge_port->shadowMSR = newMsr & 0xf0;
1916 }
1917
1918
1919 /*****************************************************************************
1920 * handle_new_lsr
1921 * this function handles any change to the lsr register for a port.
1922 *****************************************************************************/
handle_new_lsr(struct edgeport_port * edge_port,__u8 lsrData,__u8 lsr,__u8 data)1923 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1924 __u8 lsr, __u8 data)
1925 {
1926 __u8 newLsr = (__u8) (lsr & (__u8)
1927 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1928 struct async_icount *icount;
1929
1930 edge_port->shadowLSR = lsr;
1931
1932 if (newLsr & LSR_BREAK) {
1933 /*
1934 * Parity and Framing errors only count if they
1935 * occur exclusive of a break being
1936 * received.
1937 */
1938 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1939 }
1940
1941 /* Place LSR data byte into Rx buffer */
1942 if (lsrData)
1943 edge_tty_recv(edge_port->port, &data, 1);
1944
1945 /* update input line counters */
1946 icount = &edge_port->port->icount;
1947 if (newLsr & LSR_BREAK)
1948 icount->brk++;
1949 if (newLsr & LSR_OVER_ERR)
1950 icount->overrun++;
1951 if (newLsr & LSR_PAR_ERR)
1952 icount->parity++;
1953 if (newLsr & LSR_FRM_ERR)
1954 icount->frame++;
1955 }
1956
1957
1958 /****************************************************************************
1959 * sram_write
1960 * writes a number of bytes to the Edgeport device's sram starting at the
1961 * given address.
1962 * If successful returns the number of bytes written, otherwise it returns
1963 * a negative error number of the problem.
1964 ****************************************************************************/
sram_write(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,const __u8 * data)1965 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
1966 __u16 length, const __u8 *data)
1967 {
1968 int result;
1969 __u16 current_length;
1970 unsigned char *transfer_buffer;
1971
1972 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
1973
1974 transfer_buffer = kmalloc(64, GFP_KERNEL);
1975 if (!transfer_buffer)
1976 return -ENOMEM;
1977
1978 /* need to split these writes up into 64 byte chunks */
1979 result = 0;
1980 while (length > 0) {
1981 if (length > 64)
1982 current_length = 64;
1983 else
1984 current_length = length;
1985
1986 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
1987 memcpy(transfer_buffer, data, current_length);
1988 result = usb_control_msg(serial->dev,
1989 usb_sndctrlpipe(serial->dev, 0),
1990 USB_REQUEST_ION_WRITE_RAM,
1991 0x40, addr, extAddr, transfer_buffer,
1992 current_length, 300);
1993 if (result < 0)
1994 break;
1995 length -= current_length;
1996 addr += current_length;
1997 data += current_length;
1998 }
1999
2000 kfree(transfer_buffer);
2001 return result;
2002 }
2003
2004
2005 /****************************************************************************
2006 * rom_write
2007 * writes a number of bytes to the Edgeport device's ROM starting at the
2008 * given address.
2009 * If successful returns the number of bytes written, otherwise it returns
2010 * a negative error number of the problem.
2011 ****************************************************************************/
rom_write(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,const __u8 * data)2012 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2013 __u16 length, const __u8 *data)
2014 {
2015 int result;
2016 __u16 current_length;
2017 unsigned char *transfer_buffer;
2018
2019 transfer_buffer = kmalloc(64, GFP_KERNEL);
2020 if (!transfer_buffer)
2021 return -ENOMEM;
2022
2023 /* need to split these writes up into 64 byte chunks */
2024 result = 0;
2025 while (length > 0) {
2026 if (length > 64)
2027 current_length = 64;
2028 else
2029 current_length = length;
2030 memcpy(transfer_buffer, data, current_length);
2031 result = usb_control_msg(serial->dev,
2032 usb_sndctrlpipe(serial->dev, 0),
2033 USB_REQUEST_ION_WRITE_ROM, 0x40,
2034 addr, extAddr,
2035 transfer_buffer, current_length, 300);
2036 if (result < 0)
2037 break;
2038 length -= current_length;
2039 addr += current_length;
2040 data += current_length;
2041 }
2042
2043 kfree(transfer_buffer);
2044 return result;
2045 }
2046
2047
2048 /****************************************************************************
2049 * rom_read
2050 * reads a number of bytes from the Edgeport device starting at the given
2051 * address.
2052 * Returns zero on success or a negative error number.
2053 ****************************************************************************/
rom_read(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,__u8 * data)2054 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2055 __u16 addr, __u16 length, __u8 *data)
2056 {
2057 int result;
2058 __u16 current_length;
2059 unsigned char *transfer_buffer;
2060
2061 transfer_buffer = kmalloc(64, GFP_KERNEL);
2062 if (!transfer_buffer)
2063 return -ENOMEM;
2064
2065 /* need to split these reads up into 64 byte chunks */
2066 result = 0;
2067 while (length > 0) {
2068 if (length > 64)
2069 current_length = 64;
2070 else
2071 current_length = length;
2072 result = usb_control_msg(serial->dev,
2073 usb_rcvctrlpipe(serial->dev, 0),
2074 USB_REQUEST_ION_READ_ROM,
2075 0xC0, addr, extAddr, transfer_buffer,
2076 current_length, 300);
2077 if (result < current_length) {
2078 if (result >= 0)
2079 result = -EIO;
2080 break;
2081 }
2082 memcpy(data, transfer_buffer, current_length);
2083 length -= current_length;
2084 addr += current_length;
2085 data += current_length;
2086
2087 result = 0;
2088 }
2089
2090 kfree(transfer_buffer);
2091 return result;
2092 }
2093
2094
2095 /****************************************************************************
2096 * send_iosp_ext_cmd
2097 * Is used to send a IOSP message to the Edgeport device
2098 ****************************************************************************/
send_iosp_ext_cmd(struct edgeport_port * edge_port,__u8 command,__u8 param)2099 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2100 __u8 command, __u8 param)
2101 {
2102 unsigned char *buffer;
2103 unsigned char *currentCommand;
2104 int length = 0;
2105 int status = 0;
2106
2107 buffer = kmalloc(10, GFP_ATOMIC);
2108 if (!buffer)
2109 return -ENOMEM;
2110
2111 currentCommand = buffer;
2112
2113 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
2114 command, param);
2115
2116 status = write_cmd_usb(edge_port, buffer, length);
2117 if (status) {
2118 /* something bad happened, let's free up the memory */
2119 kfree(buffer);
2120 }
2121
2122 return status;
2123 }
2124
2125
2126 /*****************************************************************************
2127 * write_cmd_usb
2128 * this function writes the given buffer out to the bulk write endpoint.
2129 *****************************************************************************/
write_cmd_usb(struct edgeport_port * edge_port,unsigned char * buffer,int length)2130 static int write_cmd_usb(struct edgeport_port *edge_port,
2131 unsigned char *buffer, int length)
2132 {
2133 struct edgeport_serial *edge_serial =
2134 usb_get_serial_data(edge_port->port->serial);
2135 struct device *dev = &edge_port->port->dev;
2136 int status = 0;
2137 struct urb *urb;
2138
2139 usb_serial_debug_data(dev, __func__, length, buffer);
2140
2141 /* Allocate our next urb */
2142 urb = usb_alloc_urb(0, GFP_ATOMIC);
2143 if (!urb)
2144 return -ENOMEM;
2145
2146 atomic_inc(&CmdUrbs);
2147 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2148 __func__, urb, atomic_read(&CmdUrbs));
2149
2150 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2151 usb_sndbulkpipe(edge_serial->serial->dev,
2152 edge_serial->bulk_out_endpoint),
2153 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2154
2155 edge_port->commandPending = true;
2156 status = usb_submit_urb(urb, GFP_ATOMIC);
2157
2158 if (status) {
2159 /* something went wrong */
2160 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2161 __func__, status);
2162 usb_free_urb(urb);
2163 atomic_dec(&CmdUrbs);
2164 return status;
2165 }
2166
2167 #if 0
2168 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2169
2170 if (edge_port->commandPending) {
2171 /* command timed out */
2172 dev_dbg(dev, "%s - command timed out\n", __func__);
2173 status = -EINVAL;
2174 }
2175 #endif
2176 return status;
2177 }
2178
2179
2180 /*****************************************************************************
2181 * send_cmd_write_baud_rate
2182 * this function sends the proper command to change the baud rate of the
2183 * specified port.
2184 *****************************************************************************/
send_cmd_write_baud_rate(struct edgeport_port * edge_port,int baudRate)2185 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2186 int baudRate)
2187 {
2188 struct edgeport_serial *edge_serial =
2189 usb_get_serial_data(edge_port->port->serial);
2190 struct device *dev = &edge_port->port->dev;
2191 unsigned char *cmdBuffer;
2192 unsigned char *currCmd;
2193 int cmdLen = 0;
2194 int divisor;
2195 int status;
2196 u32 number = edge_port->port->port_number;
2197
2198 if (edge_serial->is_epic &&
2199 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2200 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2201 baudRate);
2202 return 0;
2203 }
2204
2205 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2206
2207 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2208 if (status) {
2209 dev_err(dev, "%s - bad baud rate\n", __func__);
2210 return status;
2211 }
2212
2213 /* Alloc memory for the string of commands. */
2214 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2215 if (!cmdBuffer)
2216 return -ENOMEM;
2217
2218 currCmd = cmdBuffer;
2219
2220 /* Enable access to divisor latch */
2221 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2222
2223 /* Write the divisor itself */
2224 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2225 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2226
2227 /* Restore original value to disable access to divisor latch */
2228 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2229 edge_port->shadowLCR);
2230
2231 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2232 if (status) {
2233 /* something bad happened, let's free up the memory */
2234 kfree(cmdBuffer);
2235 }
2236
2237 return status;
2238 }
2239
2240
2241 /*****************************************************************************
2242 * calc_baud_rate_divisor
2243 * this function calculates the proper baud rate divisor for the specified
2244 * baud rate.
2245 *****************************************************************************/
calc_baud_rate_divisor(struct device * dev,int baudrate,int * divisor)2246 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2247 {
2248 int i;
2249 __u16 custom;
2250
2251 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2252 if (divisor_table[i].BaudRate == baudrate) {
2253 *divisor = divisor_table[i].Divisor;
2254 return 0;
2255 }
2256 }
2257
2258 /* We have tried all of the standard baud rates
2259 * lets try to calculate the divisor for this baud rate
2260 * Make sure the baud rate is reasonable */
2261 if (baudrate > 50 && baudrate < 230400) {
2262 /* get divisor */
2263 custom = (__u16)((230400L + baudrate/2) / baudrate);
2264
2265 *divisor = custom;
2266
2267 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2268 return 0;
2269 }
2270
2271 return -1;
2272 }
2273
2274
2275 /*****************************************************************************
2276 * send_cmd_write_uart_register
2277 * this function builds up a uart register message and sends to the device.
2278 *****************************************************************************/
send_cmd_write_uart_register(struct edgeport_port * edge_port,__u8 regNum,__u8 regValue)2279 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2280 __u8 regNum, __u8 regValue)
2281 {
2282 struct edgeport_serial *edge_serial =
2283 usb_get_serial_data(edge_port->port->serial);
2284 struct device *dev = &edge_port->port->dev;
2285 unsigned char *cmdBuffer;
2286 unsigned char *currCmd;
2287 unsigned long cmdLen = 0;
2288 int status;
2289
2290 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2291 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2292
2293 if (edge_serial->is_epic &&
2294 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2295 regNum == MCR) {
2296 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2297 return 0;
2298 }
2299
2300 if (edge_serial->is_epic &&
2301 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2302 regNum == LCR) {
2303 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2304 return 0;
2305 }
2306
2307 /* Alloc memory for the string of commands. */
2308 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2309 if (cmdBuffer == NULL)
2310 return -ENOMEM;
2311
2312 currCmd = cmdBuffer;
2313
2314 /* Build a cmd in the buffer to write the given register */
2315 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2316 regNum, regValue);
2317
2318 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2319 if (status) {
2320 /* something bad happened, let's free up the memory */
2321 kfree(cmdBuffer);
2322 }
2323
2324 return status;
2325 }
2326
2327
2328 /*****************************************************************************
2329 * change_port_settings
2330 * This routine is called to set the UART on the device to match the
2331 * specified new settings.
2332 *****************************************************************************/
2333
change_port_settings(struct tty_struct * tty,struct edgeport_port * edge_port,const struct ktermios * old_termios)2334 static void change_port_settings(struct tty_struct *tty,
2335 struct edgeport_port *edge_port, const struct ktermios *old_termios)
2336 {
2337 struct device *dev = &edge_port->port->dev;
2338 struct edgeport_serial *edge_serial =
2339 usb_get_serial_data(edge_port->port->serial);
2340 int baud;
2341 unsigned cflag;
2342 __u8 mask = 0xff;
2343 __u8 lData;
2344 __u8 lParity;
2345 __u8 lStop;
2346 __u8 rxFlow;
2347 __u8 txFlow;
2348 int status;
2349
2350 if (!edge_port->open &&
2351 !edge_port->openPending) {
2352 dev_dbg(dev, "%s - port not opened\n", __func__);
2353 return;
2354 }
2355
2356 cflag = tty->termios.c_cflag;
2357
2358 switch (cflag & CSIZE) {
2359 case CS5:
2360 lData = LCR_BITS_5; mask = 0x1f;
2361 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2362 break;
2363 case CS6:
2364 lData = LCR_BITS_6; mask = 0x3f;
2365 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2366 break;
2367 case CS7:
2368 lData = LCR_BITS_7; mask = 0x7f;
2369 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2370 break;
2371 default:
2372 case CS8:
2373 lData = LCR_BITS_8;
2374 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2375 break;
2376 }
2377
2378 lParity = LCR_PAR_NONE;
2379 if (cflag & PARENB) {
2380 if (cflag & CMSPAR) {
2381 if (cflag & PARODD) {
2382 lParity = LCR_PAR_MARK;
2383 dev_dbg(dev, "%s - parity = mark\n", __func__);
2384 } else {
2385 lParity = LCR_PAR_SPACE;
2386 dev_dbg(dev, "%s - parity = space\n", __func__);
2387 }
2388 } else if (cflag & PARODD) {
2389 lParity = LCR_PAR_ODD;
2390 dev_dbg(dev, "%s - parity = odd\n", __func__);
2391 } else {
2392 lParity = LCR_PAR_EVEN;
2393 dev_dbg(dev, "%s - parity = even\n", __func__);
2394 }
2395 } else {
2396 dev_dbg(dev, "%s - parity = none\n", __func__);
2397 }
2398
2399 if (cflag & CSTOPB) {
2400 lStop = LCR_STOP_2;
2401 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2402 } else {
2403 lStop = LCR_STOP_1;
2404 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2405 }
2406
2407 /* figure out the flow control settings */
2408 rxFlow = txFlow = 0x00;
2409 if (cflag & CRTSCTS) {
2410 rxFlow |= IOSP_RX_FLOW_RTS;
2411 txFlow |= IOSP_TX_FLOW_CTS;
2412 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2413 } else {
2414 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2415 }
2416
2417 /* if we are implementing XON/XOFF, set the start and stop character
2418 in the device */
2419 if (I_IXOFF(tty) || I_IXON(tty)) {
2420 unsigned char stop_char = STOP_CHAR(tty);
2421 unsigned char start_char = START_CHAR(tty);
2422
2423 if (!edge_serial->is_epic ||
2424 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
2425 send_iosp_ext_cmd(edge_port,
2426 IOSP_CMD_SET_XON_CHAR, start_char);
2427 send_iosp_ext_cmd(edge_port,
2428 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2429 }
2430
2431 /* if we are implementing INBOUND XON/XOFF */
2432 if (I_IXOFF(tty)) {
2433 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2434 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2435 __func__, start_char, stop_char);
2436 } else {
2437 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2438 }
2439
2440 /* if we are implementing OUTBOUND XON/XOFF */
2441 if (I_IXON(tty)) {
2442 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2443 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2444 __func__, start_char, stop_char);
2445 } else {
2446 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2447 }
2448 }
2449
2450 /* Set flow control to the configured value */
2451 if (!edge_serial->is_epic ||
2452 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
2453 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2454 if (!edge_serial->is_epic ||
2455 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
2456 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2457
2458
2459 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2460 edge_port->shadowLCR |= (lData | lParity | lStop);
2461
2462 edge_port->validDataMask = mask;
2463
2464 /* Send the updated LCR value to the EdgePort */
2465 status = send_cmd_write_uart_register(edge_port, LCR,
2466 edge_port->shadowLCR);
2467 if (status != 0)
2468 return;
2469
2470 /* set up the MCR register and send it to the EdgePort */
2471 edge_port->shadowMCR = MCR_MASTER_IE;
2472 if (cflag & CBAUD)
2473 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2474
2475 status = send_cmd_write_uart_register(edge_port, MCR,
2476 edge_port->shadowMCR);
2477 if (status != 0)
2478 return;
2479
2480 /* Determine divisor based on baud rate */
2481 baud = tty_get_baud_rate(tty);
2482 if (!baud) {
2483 /* pick a default, any default... */
2484 baud = 9600;
2485 }
2486
2487 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2488 status = send_cmd_write_baud_rate(edge_port, baud);
2489 if (status == -1) {
2490 /* Speed change was not possible - put back the old speed */
2491 baud = tty_termios_baud_rate(old_termios);
2492 tty_encode_baud_rate(tty, baud, baud);
2493 }
2494 }
2495
2496
2497 /****************************************************************************
2498 * unicode_to_ascii
2499 * Turns a string from Unicode into ASCII.
2500 * Doesn't do a good job with any characters that are outside the normal
2501 * ASCII range, but it's only for debugging...
2502 * NOTE: expects the unicode in LE format
2503 ****************************************************************************/
unicode_to_ascii(char * string,int buflen,__le16 * unicode,int unicode_size)2504 static void unicode_to_ascii(char *string, int buflen,
2505 __le16 *unicode, int unicode_size)
2506 {
2507 int i;
2508
2509 if (buflen <= 0) /* never happens, but... */
2510 return;
2511 --buflen; /* space for nul */
2512
2513 for (i = 0; i < unicode_size; i++) {
2514 if (i >= buflen)
2515 break;
2516 string[i] = (char)(le16_to_cpu(unicode[i]));
2517 }
2518 string[i] = 0x00;
2519 }
2520
2521
2522 /****************************************************************************
2523 * get_manufacturing_desc
2524 * reads in the manufacturing descriptor and stores it into the serial
2525 * structure.
2526 ****************************************************************************/
get_manufacturing_desc(struct edgeport_serial * edge_serial)2527 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2528 {
2529 struct device *dev = &edge_serial->serial->dev->dev;
2530 int response;
2531
2532 dev_dbg(dev, "getting manufacturer descriptor\n");
2533
2534 response = rom_read(edge_serial->serial,
2535 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2536 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2537 EDGE_MANUF_DESC_LEN,
2538 (__u8 *)(&edge_serial->manuf_descriptor));
2539
2540 if (response < 0) {
2541 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2542 response);
2543 } else {
2544 char string[30];
2545 dev_dbg(dev, "**Manufacturer Descriptor\n");
2546 dev_dbg(dev, " RomSize: %dK\n",
2547 edge_serial->manuf_descriptor.RomSize);
2548 dev_dbg(dev, " RamSize: %dK\n",
2549 edge_serial->manuf_descriptor.RamSize);
2550 dev_dbg(dev, " CpuRev: %d\n",
2551 edge_serial->manuf_descriptor.CpuRev);
2552 dev_dbg(dev, " BoardRev: %d\n",
2553 edge_serial->manuf_descriptor.BoardRev);
2554 dev_dbg(dev, " NumPorts: %d\n",
2555 edge_serial->manuf_descriptor.NumPorts);
2556 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2557 edge_serial->manuf_descriptor.DescDate[0],
2558 edge_serial->manuf_descriptor.DescDate[1],
2559 edge_serial->manuf_descriptor.DescDate[2]+1900);
2560 unicode_to_ascii(string, sizeof(string),
2561 edge_serial->manuf_descriptor.SerialNumber,
2562 edge_serial->manuf_descriptor.SerNumLength/2);
2563 dev_dbg(dev, " SerialNumber: %s\n", string);
2564 unicode_to_ascii(string, sizeof(string),
2565 edge_serial->manuf_descriptor.AssemblyNumber,
2566 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2567 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2568 unicode_to_ascii(string, sizeof(string),
2569 edge_serial->manuf_descriptor.OemAssyNumber,
2570 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2571 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2572 dev_dbg(dev, " UartType: %d\n",
2573 edge_serial->manuf_descriptor.UartType);
2574 dev_dbg(dev, " IonPid: %d\n",
2575 edge_serial->manuf_descriptor.IonPid);
2576 dev_dbg(dev, " IonConfig: %d\n",
2577 edge_serial->manuf_descriptor.IonConfig);
2578 }
2579 }
2580
2581
2582 /****************************************************************************
2583 * get_boot_desc
2584 * reads in the bootloader descriptor and stores it into the serial
2585 * structure.
2586 ****************************************************************************/
get_boot_desc(struct edgeport_serial * edge_serial)2587 static void get_boot_desc(struct edgeport_serial *edge_serial)
2588 {
2589 struct device *dev = &edge_serial->serial->dev->dev;
2590 int response;
2591
2592 dev_dbg(dev, "getting boot descriptor\n");
2593
2594 response = rom_read(edge_serial->serial,
2595 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2596 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2597 EDGE_BOOT_DESC_LEN,
2598 (__u8 *)(&edge_serial->boot_descriptor));
2599
2600 if (response < 0) {
2601 dev_err(dev, "error in getting boot descriptor: %d\n",
2602 response);
2603 } else {
2604 dev_dbg(dev, "**Boot Descriptor:\n");
2605 dev_dbg(dev, " BootCodeLength: %d\n",
2606 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2607 dev_dbg(dev, " MajorVersion: %d\n",
2608 edge_serial->boot_descriptor.MajorVersion);
2609 dev_dbg(dev, " MinorVersion: %d\n",
2610 edge_serial->boot_descriptor.MinorVersion);
2611 dev_dbg(dev, " BuildNumber: %d\n",
2612 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2613 dev_dbg(dev, " Capabilities: 0x%x\n",
2614 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2615 dev_dbg(dev, " UConfig0: %d\n",
2616 edge_serial->boot_descriptor.UConfig0);
2617 dev_dbg(dev, " UConfig1: %d\n",
2618 edge_serial->boot_descriptor.UConfig1);
2619 }
2620 }
2621
2622
2623 /****************************************************************************
2624 * load_application_firmware
2625 * This is called to load the application firmware to the device
2626 ****************************************************************************/
load_application_firmware(struct edgeport_serial * edge_serial)2627 static void load_application_firmware(struct edgeport_serial *edge_serial)
2628 {
2629 struct device *dev = &edge_serial->serial->dev->dev;
2630 const struct ihex_binrec *rec;
2631 const struct firmware *fw;
2632 const char *fw_name;
2633 const char *fw_info;
2634 int response;
2635 __u32 Operaddr;
2636 __u16 build;
2637
2638 switch (edge_serial->product_info.iDownloadFile) {
2639 case EDGE_DOWNLOAD_FILE_I930:
2640 fw_info = "downloading firmware version (930)";
2641 fw_name = "edgeport/down.fw";
2642 break;
2643
2644 case EDGE_DOWNLOAD_FILE_80251:
2645 fw_info = "downloading firmware version (80251)";
2646 fw_name = "edgeport/down2.fw";
2647 break;
2648
2649 case EDGE_DOWNLOAD_FILE_NONE:
2650 dev_dbg(dev, "No download file specified, skipping download\n");
2651 return;
2652
2653 default:
2654 return;
2655 }
2656
2657 response = request_ihex_firmware(&fw, fw_name,
2658 &edge_serial->serial->dev->dev);
2659 if (response) {
2660 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2661 fw_name, response);
2662 return;
2663 }
2664
2665 rec = (const struct ihex_binrec *)fw->data;
2666 build = (rec->data[2] << 8) | rec->data[3];
2667
2668 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2669
2670 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2671 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2672 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2673
2674 for (rec = ihex_next_binrec(rec); rec;
2675 rec = ihex_next_binrec(rec)) {
2676 Operaddr = be32_to_cpu(rec->addr);
2677 response = sram_write(edge_serial->serial,
2678 Operaddr >> 16,
2679 Operaddr & 0xFFFF,
2680 be16_to_cpu(rec->len),
2681 &rec->data[0]);
2682 if (response < 0) {
2683 dev_err(&edge_serial->serial->dev->dev,
2684 "sram_write failed (%x, %x, %d)\n",
2685 Operaddr >> 16, Operaddr & 0xFFFF,
2686 be16_to_cpu(rec->len));
2687 break;
2688 }
2689 }
2690
2691 dev_dbg(dev, "sending exec_dl_code\n");
2692 response = usb_control_msg (edge_serial->serial->dev,
2693 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2694 USB_REQUEST_ION_EXEC_DL_CODE,
2695 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2696
2697 release_firmware(fw);
2698 }
2699
2700
2701 /****************************************************************************
2702 * edge_startup
2703 ****************************************************************************/
edge_startup(struct usb_serial * serial)2704 static int edge_startup(struct usb_serial *serial)
2705 {
2706 struct edgeport_serial *edge_serial;
2707 struct usb_device *dev;
2708 struct device *ddev = &serial->dev->dev;
2709 int i;
2710 int response;
2711 bool interrupt_in_found;
2712 bool bulk_in_found;
2713 bool bulk_out_found;
2714 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2715 EDGE_COMPATIBILITY_MASK1,
2716 EDGE_COMPATIBILITY_MASK2 };
2717
2718 dev = serial->dev;
2719
2720 /* create our private serial structure */
2721 edge_serial = kzalloc_obj(struct edgeport_serial);
2722 if (!edge_serial)
2723 return -ENOMEM;
2724
2725 spin_lock_init(&edge_serial->es_lock);
2726 edge_serial->serial = serial;
2727 usb_set_serial_data(serial, edge_serial);
2728
2729 /* get the name for the device from the device */
2730 i = usb_string(dev, dev->descriptor.iManufacturer,
2731 &edge_serial->name[0], MAX_NAME_LEN+1);
2732 if (i < 0)
2733 i = 0;
2734 edge_serial->name[i++] = ' ';
2735 usb_string(dev, dev->descriptor.iProduct,
2736 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2737
2738 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2739
2740 /* Read the epic descriptor */
2741 if (get_epic_descriptor(edge_serial) < 0) {
2742 /* memcpy descriptor to Supports structures */
2743 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2744 sizeof(struct edge_compatibility_bits));
2745
2746 /* get the manufacturing descriptor for this device */
2747 get_manufacturing_desc(edge_serial);
2748
2749 /* get the boot descriptor */
2750 get_boot_desc(edge_serial);
2751
2752 get_product_info(edge_serial);
2753 }
2754
2755 /* set the number of ports from the manufacturing description */
2756 /* serial->num_ports = serial->product_info.NumPorts; */
2757 if ((!edge_serial->is_epic) &&
2758 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2759 dev_warn(ddev,
2760 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2761 edge_serial->product_info.NumPorts,
2762 serial->num_ports);
2763 }
2764
2765 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2766
2767 /* If not an EPiC device */
2768 if (!edge_serial->is_epic) {
2769 /* now load the application firmware into this device */
2770 load_application_firmware(edge_serial);
2771
2772 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2773
2774 /* Check current Edgeport EEPROM and update if necessary */
2775 update_edgeport_E2PROM(edge_serial);
2776
2777 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2778
2779 /* set the configuration to use #1 */
2780 /* dev_dbg(ddev, "set_configuration 1\n"); */
2781 /* usb_set_configuration (dev, 1); */
2782 }
2783 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2784 edge_serial->product_info.FirmwareMajorVersion,
2785 edge_serial->product_info.FirmwareMinorVersion,
2786 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2787
2788 /* we set up the pointers to the endpoints in the edge_open function,
2789 * as the structures aren't created yet. */
2790
2791 response = 0;
2792
2793 if (edge_serial->is_epic) {
2794 struct usb_host_interface *alt;
2795
2796 alt = serial->interface->cur_altsetting;
2797
2798 /* EPIC thing, set up our interrupt polling now and our read
2799 * urb, so that the device knows it really is connected. */
2800 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2801 for (i = 0; i < alt->desc.bNumEndpoints; ++i) {
2802 struct usb_endpoint_descriptor *endpoint;
2803 int buffer_size;
2804
2805 endpoint = &alt->endpoint[i].desc;
2806 buffer_size = usb_endpoint_maxp(endpoint);
2807 if (!interrupt_in_found &&
2808 (usb_endpoint_is_int_in(endpoint))) {
2809 /* we found a interrupt in endpoint */
2810 dev_dbg(ddev, "found interrupt in\n");
2811
2812 /* not set up yet, so do it now */
2813 edge_serial->interrupt_read_urb =
2814 usb_alloc_urb(0, GFP_KERNEL);
2815 if (!edge_serial->interrupt_read_urb) {
2816 response = -ENOMEM;
2817 break;
2818 }
2819
2820 edge_serial->interrupt_in_buffer =
2821 kmalloc(buffer_size, GFP_KERNEL);
2822 if (!edge_serial->interrupt_in_buffer) {
2823 response = -ENOMEM;
2824 break;
2825 }
2826 edge_serial->interrupt_in_endpoint =
2827 endpoint->bEndpointAddress;
2828
2829 /* set up our interrupt urb */
2830 usb_fill_int_urb(
2831 edge_serial->interrupt_read_urb,
2832 dev,
2833 usb_rcvintpipe(dev,
2834 endpoint->bEndpointAddress),
2835 edge_serial->interrupt_in_buffer,
2836 buffer_size,
2837 edge_interrupt_callback,
2838 edge_serial,
2839 endpoint->bInterval);
2840
2841 interrupt_in_found = true;
2842 }
2843
2844 if (!bulk_in_found &&
2845 (usb_endpoint_is_bulk_in(endpoint))) {
2846 /* we found a bulk in endpoint */
2847 dev_dbg(ddev, "found bulk in\n");
2848
2849 /* not set up yet, so do it now */
2850 edge_serial->read_urb =
2851 usb_alloc_urb(0, GFP_KERNEL);
2852 if (!edge_serial->read_urb) {
2853 response = -ENOMEM;
2854 break;
2855 }
2856
2857 edge_serial->bulk_in_buffer =
2858 kmalloc(buffer_size, GFP_KERNEL);
2859 if (!edge_serial->bulk_in_buffer) {
2860 response = -ENOMEM;
2861 break;
2862 }
2863 edge_serial->bulk_in_endpoint =
2864 endpoint->bEndpointAddress;
2865
2866 /* set up our bulk in urb */
2867 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2868 usb_rcvbulkpipe(dev,
2869 endpoint->bEndpointAddress),
2870 edge_serial->bulk_in_buffer,
2871 usb_endpoint_maxp(endpoint),
2872 edge_bulk_in_callback,
2873 edge_serial);
2874 bulk_in_found = true;
2875 }
2876
2877 if (!bulk_out_found &&
2878 (usb_endpoint_is_bulk_out(endpoint))) {
2879 /* we found a bulk out endpoint */
2880 dev_dbg(ddev, "found bulk out\n");
2881 edge_serial->bulk_out_endpoint =
2882 endpoint->bEndpointAddress;
2883 bulk_out_found = true;
2884 }
2885 }
2886
2887 if (response || !interrupt_in_found || !bulk_in_found ||
2888 !bulk_out_found) {
2889 if (!response) {
2890 dev_err(ddev, "expected endpoints not found\n");
2891 response = -ENODEV;
2892 }
2893
2894 goto error;
2895 }
2896
2897 /* start interrupt read for this edgeport this interrupt will
2898 * continue as long as the edgeport is connected */
2899 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2900 GFP_KERNEL);
2901 if (response) {
2902 dev_err(ddev, "%s - Error %d submitting control urb\n",
2903 __func__, response);
2904
2905 goto error;
2906 }
2907 }
2908 return response;
2909
2910 error:
2911 usb_free_urb(edge_serial->interrupt_read_urb);
2912 kfree(edge_serial->interrupt_in_buffer);
2913
2914 usb_free_urb(edge_serial->read_urb);
2915 kfree(edge_serial->bulk_in_buffer);
2916
2917 kfree(edge_serial);
2918
2919 return response;
2920 }
2921
2922
2923 /****************************************************************************
2924 * edge_disconnect
2925 * This function is called whenever the device is removed from the usb bus.
2926 ****************************************************************************/
edge_disconnect(struct usb_serial * serial)2927 static void edge_disconnect(struct usb_serial *serial)
2928 {
2929 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2930
2931 if (edge_serial->is_epic) {
2932 usb_kill_urb(edge_serial->interrupt_read_urb);
2933 usb_kill_urb(edge_serial->read_urb);
2934 }
2935 }
2936
2937
2938 /****************************************************************************
2939 * edge_release
2940 * This function is called when the device structure is deallocated.
2941 ****************************************************************************/
edge_release(struct usb_serial * serial)2942 static void edge_release(struct usb_serial *serial)
2943 {
2944 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2945
2946 if (edge_serial->is_epic) {
2947 usb_kill_urb(edge_serial->interrupt_read_urb);
2948 usb_free_urb(edge_serial->interrupt_read_urb);
2949 kfree(edge_serial->interrupt_in_buffer);
2950
2951 usb_kill_urb(edge_serial->read_urb);
2952 usb_free_urb(edge_serial->read_urb);
2953 kfree(edge_serial->bulk_in_buffer);
2954 }
2955
2956 kfree(edge_serial);
2957 }
2958
edge_port_probe(struct usb_serial_port * port)2959 static int edge_port_probe(struct usb_serial_port *port)
2960 {
2961 struct edgeport_port *edge_port;
2962
2963 edge_port = kzalloc_obj(*edge_port);
2964 if (!edge_port)
2965 return -ENOMEM;
2966
2967 spin_lock_init(&edge_port->ep_lock);
2968 edge_port->port = port;
2969
2970 usb_set_serial_port_data(port, edge_port);
2971
2972 return 0;
2973 }
2974
edge_port_remove(struct usb_serial_port * port)2975 static void edge_port_remove(struct usb_serial_port *port)
2976 {
2977 struct edgeport_port *edge_port;
2978
2979 edge_port = usb_get_serial_port_data(port);
2980 kfree(edge_port);
2981 }
2982
2983 static struct usb_serial_driver edgeport_2port_device = {
2984 .driver = {
2985 .name = "edgeport_2",
2986 },
2987 .description = "Edgeport 2 port adapter",
2988 .id_table = edgeport_2port_id_table,
2989 .num_ports = 2,
2990 .num_bulk_in = 1,
2991 .num_bulk_out = 1,
2992 .num_interrupt_in = 1,
2993 .open = edge_open,
2994 .close = edge_close,
2995 .throttle = edge_throttle,
2996 .unthrottle = edge_unthrottle,
2997 .attach = edge_startup,
2998 .disconnect = edge_disconnect,
2999 .release = edge_release,
3000 .port_probe = edge_port_probe,
3001 .port_remove = edge_port_remove,
3002 .ioctl = edge_ioctl,
3003 .set_termios = edge_set_termios,
3004 .tiocmget = edge_tiocmget,
3005 .tiocmset = edge_tiocmset,
3006 .tiocmiwait = usb_serial_generic_tiocmiwait,
3007 .get_icount = usb_serial_generic_get_icount,
3008 .write = edge_write,
3009 .write_room = edge_write_room,
3010 .chars_in_buffer = edge_chars_in_buffer,
3011 .break_ctl = edge_break,
3012 .read_int_callback = edge_interrupt_callback,
3013 .read_bulk_callback = edge_bulk_in_callback,
3014 .write_bulk_callback = edge_bulk_out_data_callback,
3015 };
3016
3017 static struct usb_serial_driver edgeport_4port_device = {
3018 .driver = {
3019 .name = "edgeport_4",
3020 },
3021 .description = "Edgeport 4 port adapter",
3022 .id_table = edgeport_4port_id_table,
3023 .num_ports = 4,
3024 .num_bulk_in = 1,
3025 .num_bulk_out = 1,
3026 .num_interrupt_in = 1,
3027 .open = edge_open,
3028 .close = edge_close,
3029 .throttle = edge_throttle,
3030 .unthrottle = edge_unthrottle,
3031 .attach = edge_startup,
3032 .disconnect = edge_disconnect,
3033 .release = edge_release,
3034 .port_probe = edge_port_probe,
3035 .port_remove = edge_port_remove,
3036 .ioctl = edge_ioctl,
3037 .set_termios = edge_set_termios,
3038 .tiocmget = edge_tiocmget,
3039 .tiocmset = edge_tiocmset,
3040 .tiocmiwait = usb_serial_generic_tiocmiwait,
3041 .get_icount = usb_serial_generic_get_icount,
3042 .write = edge_write,
3043 .write_room = edge_write_room,
3044 .chars_in_buffer = edge_chars_in_buffer,
3045 .break_ctl = edge_break,
3046 .read_int_callback = edge_interrupt_callback,
3047 .read_bulk_callback = edge_bulk_in_callback,
3048 .write_bulk_callback = edge_bulk_out_data_callback,
3049 };
3050
3051 static struct usb_serial_driver edgeport_8port_device = {
3052 .driver = {
3053 .name = "edgeport_8",
3054 },
3055 .description = "Edgeport 8 port adapter",
3056 .id_table = edgeport_8port_id_table,
3057 .num_ports = 8,
3058 .num_bulk_in = 1,
3059 .num_bulk_out = 1,
3060 .num_interrupt_in = 1,
3061 .open = edge_open,
3062 .close = edge_close,
3063 .throttle = edge_throttle,
3064 .unthrottle = edge_unthrottle,
3065 .attach = edge_startup,
3066 .disconnect = edge_disconnect,
3067 .release = edge_release,
3068 .port_probe = edge_port_probe,
3069 .port_remove = edge_port_remove,
3070 .ioctl = edge_ioctl,
3071 .set_termios = edge_set_termios,
3072 .tiocmget = edge_tiocmget,
3073 .tiocmset = edge_tiocmset,
3074 .tiocmiwait = usb_serial_generic_tiocmiwait,
3075 .get_icount = usb_serial_generic_get_icount,
3076 .write = edge_write,
3077 .write_room = edge_write_room,
3078 .chars_in_buffer = edge_chars_in_buffer,
3079 .break_ctl = edge_break,
3080 .read_int_callback = edge_interrupt_callback,
3081 .read_bulk_callback = edge_bulk_in_callback,
3082 .write_bulk_callback = edge_bulk_out_data_callback,
3083 };
3084
3085 static struct usb_serial_driver epic_device = {
3086 .driver = {
3087 .name = "epic",
3088 },
3089 .description = "EPiC device",
3090 .id_table = Epic_port_id_table,
3091 .num_ports = 1,
3092 .num_bulk_in = 1,
3093 .num_bulk_out = 1,
3094 .num_interrupt_in = 1,
3095 .open = edge_open,
3096 .close = edge_close,
3097 .throttle = edge_throttle,
3098 .unthrottle = edge_unthrottle,
3099 .attach = edge_startup,
3100 .disconnect = edge_disconnect,
3101 .release = edge_release,
3102 .port_probe = edge_port_probe,
3103 .port_remove = edge_port_remove,
3104 .ioctl = edge_ioctl,
3105 .set_termios = edge_set_termios,
3106 .tiocmget = edge_tiocmget,
3107 .tiocmset = edge_tiocmset,
3108 .tiocmiwait = usb_serial_generic_tiocmiwait,
3109 .get_icount = usb_serial_generic_get_icount,
3110 .write = edge_write,
3111 .write_room = edge_write_room,
3112 .chars_in_buffer = edge_chars_in_buffer,
3113 .break_ctl = edge_break,
3114 .read_int_callback = edge_interrupt_callback,
3115 .read_bulk_callback = edge_bulk_in_callback,
3116 .write_bulk_callback = edge_bulk_out_data_callback,
3117 };
3118
3119 static struct usb_serial_driver * const serial_drivers[] = {
3120 &edgeport_2port_device, &edgeport_4port_device,
3121 &edgeport_8port_device, &epic_device, NULL
3122 };
3123
3124 module_usb_serial_driver(serial_drivers, id_table_combined);
3125
3126 MODULE_AUTHOR(DRIVER_AUTHOR);
3127 MODULE_DESCRIPTION(DRIVER_DESC);
3128 MODULE_LICENSE("GPL");
3129 MODULE_FIRMWARE("edgeport/boot.fw");
3130 MODULE_FIRMWARE("edgeport/boot2.fw");
3131 MODULE_FIRMWARE("edgeport/down.fw");
3132 MODULE_FIRMWARE("edgeport/down2.fw");
3133