Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * Edgeport/4 | |
14 | * Edgeport/4t | |
15 | * Edgeport/2 | |
16 | * Edgeport/4i | |
17 | * Edgeport/2i | |
18 | * Edgeport/421 | |
19 | * Edgeport/21 | |
20 | * Rapidport/4 | |
21 | * Edgeport/8 | |
22 | * Edgeport/2D8 | |
23 | * Edgeport/4D8 | |
24 | * Edgeport/8i | |
25 | * | |
26 | * For questions or problems with this driver, contact Inside Out | |
27 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
28 | * or Al Borchers <alborchers@steinerpoint.com>. | |
29 | * | |
1da177e4 LT |
30 | */ |
31 | ||
1da177e4 LT |
32 | #include <linux/kernel.h> |
33 | #include <linux/jiffies.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/tty_driver.h> | |
39 | #include <linux/tty_flip.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/serial.h> | |
43 | #include <linux/ioctl.h> | |
44 | #include <linux/wait.h> | |
5b9ea932 JS |
45 | #include <linux/firmware.h> |
46 | #include <linux/ihex.h> | |
03f0dbf7 | 47 | #include <linux/uaccess.h> |
1da177e4 | 48 | #include <linux/usb.h> |
a969888c | 49 | #include <linux/usb/serial.h> |
1da177e4 LT |
50 | #include "io_edgeport.h" |
51 | #include "io_ionsp.h" /* info for the iosp messages */ | |
52 | #include "io_16654.h" /* 16654 UART defines */ | |
53 | ||
54 | /* | |
55 | * Version Information | |
56 | */ | |
57 | #define DRIVER_VERSION "v2.7" | |
58 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
59 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
60 | ||
1da177e4 LT |
61 | #define MAX_NAME_LEN 64 |
62 | ||
63 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
64 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
65 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
66 | ||
67 | /* receive port state */ | |
68 | enum RXSTATE { | |
03f0dbf7 AC |
69 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
70 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
71 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
72 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
73 | }; |
74 | ||
75 | ||
03f0dbf7 AC |
76 | /* Transmit Fifo |
77 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
78 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
79 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
80 | */ | |
81 | struct TxFifo { | |
82 | unsigned int head; /* index to head pointer (write) */ | |
83 | unsigned int tail; /* index to tail pointer (read) */ | |
84 | unsigned int count; /* Bytes in queue */ | |
85 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
86 | unsigned char *fifo; /* allocated Buffer */ | |
87 | }; | |
88 | ||
89 | /* This structure holds all of the local port information */ | |
90 | struct edgeport_port { | |
91 | __u16 txCredits; /* our current credits for this port */ | |
92 | __u16 maxTxCredits; /* the max size of the port */ | |
93 | ||
94 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
95 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 96 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
97 | spinlock_t ep_lock; |
98 | ||
99 | __u8 shadowLCR; /* last LCR value received */ | |
100 | __u8 shadowMCR; /* last MCR value received */ | |
101 | __u8 shadowMSR; /* last MSR value received */ | |
102 | __u8 shadowLSR; /* last LSR value received */ | |
103 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
104 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
105 | __u8 validDataMask; | |
106 | __u32 baudRate; | |
107 | ||
cb8eaa8b RK |
108 | bool open; |
109 | bool openPending; | |
110 | bool commandPending; | |
111 | bool closePending; | |
112 | bool chaseResponsePending; | |
1da177e4 LT |
113 | |
114 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
115 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
116 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
117 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
118 | ||
119 | struct async_icount icount; | |
120 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
121 | }; | |
122 | ||
123 | ||
124 | /* This structure holds all of the individual device information */ | |
125 | struct edgeport_serial { | |
ad93375a | 126 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
127 | |
128 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
129 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
130 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
131 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
132 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
133 | |
134 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
135 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
136 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
137 | |
138 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
139 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
140 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 141 | bool read_in_progress; |
1da177e4 LT |
142 | spinlock_t es_lock; |
143 | ||
144 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
145 | ||
146 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
147 | ||
148 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
149 | __u8 rxHeader1; /* receive header byte 1 */ | |
150 | __u8 rxHeader2; /* receive header byte 2 */ | |
151 | __u8 rxHeader3; /* receive header byte 3 */ | |
152 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
153 | __u8 rxStatusCode; /* the receive status code */ | |
154 | __u8 rxStatusParam; /* the receive status paramater */ | |
155 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
156 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
157 | }; | |
158 | ||
159 | /* baud rate information */ | |
160 | struct divisor_table_entry { | |
161 | __u32 BaudRate; | |
162 | __u16 Divisor; | |
163 | }; | |
164 | ||
03f0dbf7 AC |
165 | /* |
166 | * Define table of divisors for Rev A EdgePort/4 hardware | |
167 | * These assume a 3.6864MHz crystal, the standard /16, and | |
168 | * MCR.7 = 0. | |
169 | */ | |
170 | ||
4c4c9432 | 171 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
172 | { 50, 4608}, |
173 | { 75, 3072}, | |
174 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
175 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
176 | { 150, 1536}, |
177 | { 300, 768}, | |
178 | { 600, 384}, | |
179 | { 1200, 192}, | |
180 | { 1800, 128}, | |
181 | { 2400, 96}, | |
182 | { 4800, 48}, | |
183 | { 7200, 32}, | |
184 | { 9600, 24}, | |
185 | { 14400, 16}, | |
186 | { 19200, 12}, | |
187 | { 38400, 6}, | |
188 | { 57600, 4}, | |
189 | { 115200, 2}, | |
190 | { 230400, 1}, | |
191 | }; | |
192 | ||
193 | /* local variables */ | |
194 | static int debug; | |
195 | ||
03f0dbf7 | 196 | static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */ |
1da177e4 LT |
197 | |
198 | ||
199 | /* local function prototypes */ | |
200 | ||
201 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
202 | static void edge_interrupt_callback(struct urb *urb); |
203 | static void edge_bulk_in_callback(struct urb *urb); | |
204 | static void edge_bulk_out_data_callback(struct urb *urb); | |
205 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
206 | |
207 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 208 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 209 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
210 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
211 | const unsigned char *buf, int count); | |
212 | static int edge_write_room(struct tty_struct *tty); | |
213 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
214 | static void edge_throttle(struct tty_struct *tty); | |
215 | static void edge_unthrottle(struct tty_struct *tty); | |
216 | static void edge_set_termios(struct tty_struct *tty, | |
217 | struct usb_serial_port *port, | |
218 | struct ktermios *old_termios); | |
219 | static int edge_ioctl(struct tty_struct *tty, struct file *file, | |
220 | unsigned int cmd, unsigned long arg); | |
221 | static void edge_break(struct tty_struct *tty, int break_state); | |
222 | static int edge_tiocmget(struct tty_struct *tty, struct file *file); | |
223 | static int edge_tiocmset(struct tty_struct *tty, struct file *file, | |
224 | unsigned int set, unsigned int clear); | |
225 | static int edge_startup(struct usb_serial *serial); | |
f9c99bb8 AS |
226 | static void edge_disconnect(struct usb_serial *serial); |
227 | static void edge_release(struct usb_serial *serial); | |
1da177e4 LT |
228 | |
229 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
230 | ||
1da177e4 | 231 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
232 | |
233 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
234 | unsigned char *buffer, __u16 bufferLength); | |
235 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
236 | __u8 byte2, __u8 byte3); | |
237 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, | |
238 | unsigned char *data, int length); | |
239 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); | |
240 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
241 | __u8 lsr, __u8 data); | |
242 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
243 | __u8 param); | |
244 | static int calc_baud_rate_divisor(int baud_rate, int *divisor); | |
245 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, | |
246 | int baudRate); | |
247 | static void change_port_settings(struct tty_struct *tty, | |
248 | struct edgeport_port *edge_port, | |
249 | struct ktermios *old_termios); | |
250 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
251 | __u8 regNum, __u8 regValue); | |
252 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
253 | unsigned char *buffer, int writeLength); | |
254 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
255 | struct edgeport_port *edge_port); | |
256 | ||
257 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
258 | __u16 length, const __u8 *data); | |
259 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
260 | __u16 length, __u8 *data); | |
261 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
262 | __u16 length, const __u8 *data); | |
263 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
264 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
265 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
266 | ||
267 | static void unicode_to_ascii(char *string, int buflen, | |
268 | __le16 *unicode, int unicode_size); | |
269 | ||
270 | ||
271 | /* ************************************************************************ */ | |
272 | /* ************************************************************************ */ | |
273 | /* ************************************************************************ */ | |
274 | /* ************************************************************************ */ | |
1da177e4 LT |
275 | |
276 | /************************************************************************ | |
277 | * * | |
278 | * update_edgeport_E2PROM() Compare current versions of * | |
279 | * Boot ROM and Manufacture * | |
280 | * Descriptors with versions * | |
281 | * embedded in this driver * | |
282 | * * | |
283 | ************************************************************************/ | |
03f0dbf7 | 284 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 LT |
285 | { |
286 | __u32 BootCurVer; | |
287 | __u32 BootNewVer; | |
5b9ea932 JS |
288 | __u8 BootMajorVersion; |
289 | __u8 BootMinorVersion; | |
290 | __u16 BootBuildNumber; | |
291 | __u32 Bootaddr; | |
292 | const struct ihex_binrec *rec; | |
293 | const struct firmware *fw; | |
294 | const char *fw_name; | |
1da177e4 LT |
295 | int response; |
296 | ||
1da177e4 | 297 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
298 | case EDGE_DOWNLOAD_FILE_I930: |
299 | fw_name = "edgeport/boot.fw"; | |
300 | break; | |
301 | case EDGE_DOWNLOAD_FILE_80251: | |
302 | fw_name = "edgeport/boot2.fw"; | |
303 | break; | |
304 | default: | |
305 | return; | |
1da177e4 LT |
306 | } |
307 | ||
5b9ea932 JS |
308 | response = request_ihex_firmware(&fw, fw_name, |
309 | &edge_serial->serial->dev->dev); | |
310 | if (response) { | |
311 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
312 | fw_name, response); | |
313 | return; | |
314 | } | |
315 | ||
316 | rec = (const struct ihex_binrec *)fw->data; | |
317 | BootMajorVersion = rec->data[0]; | |
318 | BootMinorVersion = rec->data[1]; | |
319 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
320 | ||
03f0dbf7 | 321 | /* Check Boot Image Version */ |
1da177e4 LT |
322 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
323 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
324 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
325 | ||
326 | BootNewVer = (BootMajorVersion << 24) + | |
327 | (BootMinorVersion << 16) + | |
5b9ea932 | 328 | BootBuildNumber; |
1da177e4 LT |
329 | |
330 | dbg("Current Boot Image version %d.%d.%d", | |
331 | edge_serial->boot_descriptor.MajorVersion, | |
332 | edge_serial->boot_descriptor.MinorVersion, | |
333 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
334 | ||
335 | ||
336 | if (BootNewVer > BootCurVer) { | |
337 | dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", | |
338 | edge_serial->boot_descriptor.MajorVersion, | |
339 | edge_serial->boot_descriptor.MinorVersion, | |
340 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 341 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 LT |
342 | |
343 | dbg("Downloading new Boot Image"); | |
344 | ||
5b9ea932 JS |
345 | for (rec = ihex_next_binrec(rec); rec; |
346 | rec = ihex_next_binrec(rec)) { | |
347 | Bootaddr = be32_to_cpu(rec->addr); | |
348 | response = rom_write(edge_serial->serial, | |
349 | Bootaddr >> 16, | |
350 | Bootaddr & 0xFFFF, | |
351 | be16_to_cpu(rec->len), | |
352 | &rec->data[0]); | |
1da177e4 | 353 | if (response < 0) { |
5b9ea932 JS |
354 | dev_err(&edge_serial->serial->dev->dev, |
355 | "rom_write failed (%x, %x, %d)\n", | |
356 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
357 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
358 | break; |
359 | } | |
360 | } | |
361 | } else { | |
362 | dbg("Boot Image -- already up to date"); | |
363 | } | |
5b9ea932 | 364 | release_firmware(fw); |
1da177e4 LT |
365 | } |
366 | ||
367 | ||
368 | /************************************************************************ | |
369 | * * | |
370 | * Get string descriptor from device * | |
371 | * * | |
372 | ************************************************************************/ | |
03f0dbf7 | 373 | static int get_string(struct usb_device *dev, int Id, char *string, int buflen) |
1da177e4 LT |
374 | { |
375 | struct usb_string_descriptor StringDesc; | |
376 | struct usb_string_descriptor *pStringDesc; | |
377 | ||
03f0dbf7 | 378 | dbg("%s - USB String ID = %d", __func__, Id); |
1da177e4 | 379 | |
03f0dbf7 AC |
380 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, |
381 | &StringDesc, sizeof(StringDesc))) | |
1da177e4 | 382 | return 0; |
1da177e4 | 383 | |
03f0dbf7 AC |
384 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
385 | if (!pStringDesc) | |
1da177e4 | 386 | return 0; |
1da177e4 | 387 | |
03f0dbf7 AC |
388 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, |
389 | pStringDesc, StringDesc.bLength)) { | |
1da177e4 LT |
390 | kfree(pStringDesc); |
391 | return 0; | |
392 | } | |
393 | ||
03f0dbf7 AC |
394 | unicode_to_ascii(string, buflen, |
395 | pStringDesc->wData, pStringDesc->bLength/2); | |
1da177e4 LT |
396 | |
397 | kfree(pStringDesc); | |
441b62c1 | 398 | dbg("%s - USB String %s", __func__, string); |
1da177e4 LT |
399 | return strlen(string); |
400 | } | |
401 | ||
402 | ||
403 | #if 0 | |
404 | /************************************************************************ | |
405 | * | |
406 | * Get string descriptor from device | |
407 | * | |
408 | ************************************************************************/ | |
03f0dbf7 AC |
409 | static int get_string_desc(struct usb_device *dev, int Id, |
410 | struct usb_string_descriptor **pRetDesc) | |
1da177e4 LT |
411 | { |
412 | struct usb_string_descriptor StringDesc; | |
413 | struct usb_string_descriptor *pStringDesc; | |
414 | ||
03f0dbf7 | 415 | dbg("%s - USB String ID = %d", __func__, Id); |
1da177e4 | 416 | |
03f0dbf7 AC |
417 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
418 | sizeof(StringDesc))) | |
1da177e4 | 419 | return 0; |
1da177e4 | 420 | |
03f0dbf7 AC |
421 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
422 | if (!pStringDesc) | |
1da177e4 | 423 | return -1; |
1da177e4 | 424 | |
03f0dbf7 AC |
425 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
426 | StringDesc.bLength)) { | |
1da177e4 LT |
427 | kfree(pStringDesc); |
428 | return -1; | |
429 | } | |
430 | ||
431 | *pRetDesc = pStringDesc; | |
432 | return 0; | |
433 | } | |
434 | #endif | |
435 | ||
6e8cf775 GKH |
436 | static void dump_product_info(struct edgeport_product_info *product_info) |
437 | { | |
03f0dbf7 | 438 | /* Dump Product Info structure */ |
6e8cf775 | 439 | dbg("**Product Information:"); |
03f0dbf7 AC |
440 | dbg(" ProductId %x", product_info->ProductId); |
441 | dbg(" NumPorts %d", product_info->NumPorts); | |
442 | dbg(" ProdInfoVer %d", product_info->ProdInfoVer); | |
6e8cf775 | 443 | dbg(" IsServer %d", product_info->IsServer); |
03f0dbf7 AC |
444 | dbg(" IsRS232 %d", product_info->IsRS232); |
445 | dbg(" IsRS422 %d", product_info->IsRS422); | |
446 | dbg(" IsRS485 %d", product_info->IsRS485); | |
447 | dbg(" RomSize %d", product_info->RomSize); | |
448 | dbg(" RamSize %d", product_info->RamSize); | |
449 | dbg(" CpuRev %x", product_info->CpuRev); | |
6e8cf775 GKH |
450 | dbg(" BoardRev %x", product_info->BoardRev); |
451 | dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, | |
452 | product_info->BootMinorVersion, | |
453 | le16_to_cpu(product_info->BootBuildNumber)); | |
03f0dbf7 AC |
454 | dbg(" FirmwareMajorVersion %d.%d.%d", |
455 | product_info->FirmwareMajorVersion, | |
456 | product_info->FirmwareMinorVersion, | |
457 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
458 | dbg(" ManufactureDescDate %d/%d/%d", | |
459 | product_info->ManufactureDescDate[0], | |
460 | product_info->ManufactureDescDate[1], | |
461 | product_info->ManufactureDescDate[2]+1900); | |
6e8cf775 GKH |
462 | dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); |
463 | dbg(" EpicVer %d", product_info->EpicVer); | |
464 | } | |
465 | ||
1da177e4 LT |
466 | static void get_product_info(struct edgeport_serial *edge_serial) |
467 | { | |
468 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
469 | ||
03f0dbf7 AC |
470 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
471 | ||
472 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
473 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
474 | product_info->ProdInfoVer = 0; | |
475 | ||
476 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
477 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
478 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
479 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
480 | ||
481 | product_info->BootMajorVersion = | |
482 | edge_serial->boot_descriptor.MajorVersion; | |
483 | product_info->BootMinorVersion = | |
484 | edge_serial->boot_descriptor.MinorVersion; | |
485 | product_info->BootBuildNumber = | |
486 | edge_serial->boot_descriptor.BuildNumber; | |
487 | ||
488 | memcpy(product_info->ManufactureDescDate, | |
489 | edge_serial->manuf_descriptor.DescDate, | |
490 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
491 | ||
492 | /* check if this is 2nd generation hardware */ | |
493 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
494 | & ION_DEVICE_ID_80251_NETCHIP) | |
495 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
496 | else | |
497 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
498 | ||
499 | /* Determine Product type and set appropriate flags */ | |
1da177e4 | 500 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
501 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
502 | case ION_DEVICE_ID_EDGEPORT_4T: | |
503 | case ION_DEVICE_ID_EDGEPORT_4: | |
504 | case ION_DEVICE_ID_EDGEPORT_2: | |
505 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
506 | case ION_DEVICE_ID_EDGEPORT_8: | |
507 | case ION_DEVICE_ID_EDGEPORT_421: | |
508 | case ION_DEVICE_ID_EDGEPORT_21: | |
509 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
510 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
511 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
512 | product_info->IsRS232 = 1; | |
513 | break; | |
1da177e4 | 514 | |
03f0dbf7 AC |
515 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
516 | product_info->IsRS422 = 1; | |
517 | product_info->IsRS485 = 1; | |
518 | break; | |
1da177e4 | 519 | |
03f0dbf7 AC |
520 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
521 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
522 | product_info->IsRS422 = 1; | |
523 | break; | |
1da177e4 LT |
524 | } |
525 | ||
6e8cf775 GKH |
526 | dump_product_info(product_info); |
527 | } | |
1da177e4 | 528 | |
6e8cf775 GKH |
529 | static int get_epic_descriptor(struct edgeport_serial *ep) |
530 | { | |
531 | int result; | |
532 | struct usb_serial *serial = ep->serial; | |
533 | struct edgeport_product_info *product_info = &ep->product_info; | |
534 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
535 | struct edge_compatibility_bits *bits; | |
536 | ||
537 | ep->is_epic = 0; | |
538 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
539 | USB_REQUEST_ION_GET_EPIC_DESC, | |
540 | 0xC0, 0x00, 0x00, | |
541 | &ep->epic_descriptor, | |
542 | sizeof(struct edge_compatibility_descriptor), | |
543 | 300); | |
544 | ||
441b62c1 | 545 | dbg("%s result = %d", __func__, result); |
6e8cf775 GKH |
546 | |
547 | if (result > 0) { | |
548 | ep->is_epic = 1; | |
549 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
550 | ||
03f0dbf7 AC |
551 | product_info->NumPorts = epic->NumPorts; |
552 | product_info->ProdInfoVer = 0; | |
553 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
554 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
555 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
556 | product_info->iDownloadFile = epic->iDownloadFile; | |
557 | product_info->EpicVer = epic->EpicVer; | |
558 | product_info->Epic = epic->Supports; | |
559 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
6e8cf775 GKH |
560 | dump_product_info(product_info); |
561 | ||
562 | bits = &ep->epic_descriptor.Supports; | |
563 | dbg("**EPIC descriptor:"); | |
564 | dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
03f0dbf7 AC |
565 | dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE"); |
566 | dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE"); | |
567 | dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE"); | |
568 | dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
569 | dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
570 | dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
571 | dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
572 | dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
573 | dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
574 | dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
575 | dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
576 | dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE"); | |
6e8cf775 GKH |
577 | } |
578 | ||
579 | return result; | |
1da177e4 LT |
580 | } |
581 | ||
582 | ||
583 | /************************************************************************/ | |
584 | /************************************************************************/ | |
585 | /* U S B C A L L B A C K F U N C T I O N S */ | |
586 | /* U S B C A L L B A C K F U N C T I O N S */ | |
587 | /************************************************************************/ | |
588 | /************************************************************************/ | |
589 | ||
590 | /***************************************************************************** | |
591 | * edge_interrupt_callback | |
03f0dbf7 | 592 | * this is the callback function for when we have received data on the |
1da177e4 LT |
593 | * interrupt endpoint. |
594 | *****************************************************************************/ | |
03f0dbf7 | 595 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 596 | { |
cdc97792 | 597 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
598 | struct edgeport_port *edge_port; |
599 | struct usb_serial_port *port; | |
4a90f09b | 600 | struct tty_struct *tty; |
1da177e4 LT |
601 | unsigned char *data = urb->transfer_buffer; |
602 | int length = urb->actual_length; | |
603 | int bytes_avail; | |
604 | int position; | |
605 | int txCredits; | |
606 | int portNumber; | |
607 | int result; | |
2a393f5f | 608 | int status = urb->status; |
1da177e4 | 609 | |
441b62c1 | 610 | dbg("%s", __func__); |
1da177e4 | 611 | |
2a393f5f | 612 | switch (status) { |
1da177e4 LT |
613 | case 0: |
614 | /* success */ | |
615 | break; | |
616 | case -ECONNRESET: | |
617 | case -ENOENT: | |
618 | case -ESHUTDOWN: | |
619 | /* this urb is terminated, clean up */ | |
2a393f5f | 620 | dbg("%s - urb shutting down with status: %d", |
03f0dbf7 | 621 | __func__, status); |
1da177e4 LT |
622 | return; |
623 | default: | |
03f0dbf7 | 624 | dbg("%s - nonzero urb status received: %d", __func__, status); |
1da177e4 LT |
625 | goto exit; |
626 | } | |
627 | ||
03f0dbf7 | 628 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 629 | if (length) { |
03f0dbf7 AC |
630 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, |
631 | __func__, length, data); | |
1da177e4 LT |
632 | |
633 | if (length > 1) { | |
634 | bytes_avail = data[0] | (data[1] << 8); | |
635 | if (bytes_avail) { | |
636 | spin_lock(&edge_serial->es_lock); | |
637 | edge_serial->rxBytesAvail += bytes_avail; | |
441b62c1 | 638 | dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); |
1da177e4 LT |
639 | |
640 | if (edge_serial->rxBytesAvail > 0 && | |
641 | !edge_serial->read_in_progress) { | |
441b62c1 | 642 | dbg("%s - posting a read", __func__); |
cb8eaa8b | 643 | edge_serial->read_in_progress = true; |
1da177e4 | 644 | |
03f0dbf7 AC |
645 | /* we have pending bytes on the |
646 | bulk in pipe, send a request */ | |
1da177e4 LT |
647 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
648 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); | |
649 | if (result) { | |
441b62c1 | 650 | dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result); |
cb8eaa8b | 651 | edge_serial->read_in_progress = false; |
1da177e4 LT |
652 | } |
653 | } | |
654 | spin_unlock(&edge_serial->es_lock); | |
655 | } | |
656 | } | |
657 | /* grab the txcredits for the ports if available */ | |
658 | position = 2; | |
659 | portNumber = 0; | |
03f0dbf7 AC |
660 | while ((position < length) && |
661 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
662 | txCredits = data[position] | (data[position+1] << 8); |
663 | if (txCredits) { | |
664 | port = edge_serial->serial->port[portNumber]; | |
665 | edge_port = usb_get_serial_port_data(port); | |
666 | if (edge_port->open) { | |
667 | spin_lock(&edge_port->ep_lock); | |
668 | edge_port->txCredits += txCredits; | |
669 | spin_unlock(&edge_port->ep_lock); | |
03f0dbf7 AC |
670 | dbg("%s - txcredits for port%d = %d", |
671 | __func__, portNumber, | |
672 | edge_port->txCredits); | |
1da177e4 | 673 | |
03f0dbf7 AC |
674 | /* tell the tty driver that something |
675 | has changed */ | |
4a90f09b AC |
676 | tty = tty_port_tty_get( |
677 | &edge_port->port->port); | |
678 | if (tty) { | |
679 | tty_wakeup(tty); | |
680 | tty_kref_put(tty); | |
681 | } | |
03f0dbf7 AC |
682 | /* Since we have more credit, check |
683 | if more data can be sent */ | |
684 | send_more_port_data(edge_serial, | |
685 | edge_port); | |
1da177e4 LT |
686 | } |
687 | } | |
688 | position += 2; | |
689 | ++portNumber; | |
690 | } | |
691 | } | |
692 | ||
693 | exit: | |
03f0dbf7 AC |
694 | result = usb_submit_urb(urb, GFP_ATOMIC); |
695 | if (result) | |
696 | dev_err(&urb->dev->dev, | |
697 | "%s - Error %d submitting control urb\n", | |
698 | __func__, result); | |
1da177e4 LT |
699 | } |
700 | ||
701 | ||
702 | /***************************************************************************** | |
703 | * edge_bulk_in_callback | |
03f0dbf7 | 704 | * this is the callback function for when we have received data on the |
1da177e4 LT |
705 | * bulk in endpoint. |
706 | *****************************************************************************/ | |
03f0dbf7 | 707 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 708 | { |
cdc97792 | 709 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 | 710 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 711 | int retval; |
1da177e4 | 712 | __u16 raw_data_length; |
2a393f5f | 713 | int status = urb->status; |
1da177e4 | 714 | |
441b62c1 | 715 | dbg("%s", __func__); |
1da177e4 | 716 | |
2a393f5f GKH |
717 | if (status) { |
718 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 719 | __func__, status); |
cb8eaa8b | 720 | edge_serial->read_in_progress = false; |
1da177e4 LT |
721 | return; |
722 | } | |
723 | ||
724 | if (urb->actual_length == 0) { | |
441b62c1 | 725 | dbg("%s - read bulk callback with no data", __func__); |
cb8eaa8b | 726 | edge_serial->read_in_progress = false; |
1da177e4 LT |
727 | return; |
728 | } | |
729 | ||
730 | raw_data_length = urb->actual_length; | |
731 | ||
03f0dbf7 AC |
732 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, |
733 | __func__, raw_data_length, data); | |
1da177e4 LT |
734 | |
735 | spin_lock(&edge_serial->es_lock); | |
736 | ||
737 | /* decrement our rxBytes available by the number that we just got */ | |
738 | edge_serial->rxBytesAvail -= raw_data_length; | |
739 | ||
03f0dbf7 AC |
740 | dbg("%s - Received = %d, rxBytesAvail %d", __func__, |
741 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 742 | |
03f0dbf7 | 743 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
744 | |
745 | /* check to see if there's any more data for us to read */ | |
746 | if (edge_serial->rxBytesAvail > 0) { | |
441b62c1 | 747 | dbg("%s - posting a read", __func__); |
1da177e4 | 748 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
2a393f5f GKH |
749 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
750 | if (retval) { | |
751 | dev_err(&urb->dev->dev, | |
752 | "%s - usb_submit_urb(read bulk) failed, " | |
441b62c1 | 753 | "retval = %d\n", __func__, retval); |
cb8eaa8b | 754 | edge_serial->read_in_progress = false; |
1da177e4 LT |
755 | } |
756 | } else { | |
cb8eaa8b | 757 | edge_serial->read_in_progress = false; |
1da177e4 LT |
758 | } |
759 | ||
760 | spin_unlock(&edge_serial->es_lock); | |
761 | } | |
762 | ||
763 | ||
764 | /***************************************************************************** | |
765 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
766 | * this is the callback function for when we have finished sending |
767 | * serial data on the bulk out endpoint. | |
1da177e4 | 768 | *****************************************************************************/ |
03f0dbf7 | 769 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 770 | { |
cdc97792 | 771 | struct edgeport_port *edge_port = urb->context; |
1da177e4 | 772 | struct tty_struct *tty; |
2a393f5f | 773 | int status = urb->status; |
1da177e4 | 774 | |
441b62c1 | 775 | dbg("%s", __func__); |
1da177e4 | 776 | |
2a393f5f GKH |
777 | if (status) { |
778 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 779 | __func__, status); |
1da177e4 LT |
780 | } |
781 | ||
4a90f09b | 782 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
783 | |
784 | if (tty && edge_port->open) { | |
03f0dbf7 AC |
785 | /* let the tty driver wakeup if it has a special |
786 | write_wakeup function */ | |
1da177e4 LT |
787 | tty_wakeup(tty); |
788 | } | |
4a90f09b | 789 | tty_kref_put(tty); |
1da177e4 | 790 | |
03f0dbf7 | 791 | /* Release the Write URB */ |
cb8eaa8b | 792 | edge_port->write_in_progress = false; |
1da177e4 | 793 | |
03f0dbf7 AC |
794 | /* Check if more data needs to be sent */ |
795 | send_more_port_data((struct edgeport_serial *) | |
796 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
797 | } |
798 | ||
799 | ||
800 | /***************************************************************************** | |
801 | * BulkOutCmdCallback | |
03f0dbf7 AC |
802 | * this is the callback function for when we have finished sending a |
803 | * command on the bulk out endpoint. | |
1da177e4 | 804 | *****************************************************************************/ |
03f0dbf7 | 805 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 806 | { |
cdc97792 | 807 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
808 | struct tty_struct *tty; |
809 | int status = urb->status; | |
810 | ||
441b62c1 | 811 | dbg("%s", __func__); |
1da177e4 | 812 | |
96c706ed | 813 | atomic_dec(&CmdUrbs); |
03f0dbf7 AC |
814 | dbg("%s - FREE URB %p (outstanding %d)", __func__, |
815 | urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
816 | |
817 | ||
818 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 819 | kfree(urb->transfer_buffer); |
1da177e4 LT |
820 | |
821 | /* Free the command urb */ | |
03f0dbf7 | 822 | usb_free_urb(urb); |
1da177e4 LT |
823 | |
824 | if (status) { | |
03f0dbf7 AC |
825 | dbg("%s - nonzero write bulk status received: %d", |
826 | __func__, status); | |
1da177e4 LT |
827 | return; |
828 | } | |
829 | ||
830 | /* Get pointer to tty */ | |
4a90f09b | 831 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
832 | |
833 | /* tell the tty driver that something has changed */ | |
834 | if (tty && edge_port->open) | |
835 | tty_wakeup(tty); | |
4a90f09b | 836 | tty_kref_put(tty); |
1da177e4 LT |
837 | |
838 | /* we have completed the command */ | |
cb8eaa8b | 839 | edge_port->commandPending = false; |
1da177e4 LT |
840 | wake_up(&edge_port->wait_command); |
841 | } | |
842 | ||
843 | ||
844 | /***************************************************************************** | |
845 | * Driver tty interface functions | |
846 | *****************************************************************************/ | |
847 | ||
848 | /***************************************************************************** | |
849 | * SerialOpen | |
850 | * this function is called by the tty driver when a port is opened | |
851 | * If successful, we return 0 | |
852 | * Otherwise we return a negative error number. | |
853 | *****************************************************************************/ | |
a509a7e4 | 854 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
855 | { |
856 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
857 | struct usb_serial *serial; | |
858 | struct edgeport_serial *edge_serial; | |
859 | int response; | |
860 | ||
441b62c1 | 861 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
862 | |
863 | if (edge_port == NULL) | |
864 | return -ENODEV; | |
865 | ||
03f0dbf7 AC |
866 | /* see if we've set up our endpoint info yet (can't set it up |
867 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
868 | serial = port->serial; |
869 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 870 | if (edge_serial == NULL) |
1da177e4 | 871 | return -ENODEV; |
1da177e4 LT |
872 | if (edge_serial->interrupt_in_buffer == NULL) { |
873 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 874 | |
1da177e4 | 875 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
876 | edge_serial->interrupt_in_buffer = |
877 | port0->interrupt_in_buffer; | |
878 | edge_serial->interrupt_in_endpoint = | |
879 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
880 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
881 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
882 | edge_serial->bulk_in_endpoint = |
883 | port0->bulk_in_endpointAddress; | |
1da177e4 | 884 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
885 | edge_serial->bulk_out_endpoint = |
886 | port0->bulk_out_endpointAddress; | |
887 | ||
1da177e4 LT |
888 | /* set up our interrupt urb */ |
889 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
890 | serial->dev, |
891 | usb_rcvintpipe(serial->dev, | |
892 | port0->interrupt_in_endpointAddress), | |
893 | port0->interrupt_in_buffer, | |
894 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
895 | edge_interrupt_callback, edge_serial, | |
896 | edge_serial->interrupt_read_urb->interval); | |
897 | ||
1da177e4 LT |
898 | /* set up our bulk in urb */ |
899 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
900 | usb_rcvbulkpipe(serial->dev, |
901 | port0->bulk_in_endpointAddress), | |
902 | port0->bulk_in_buffer, | |
903 | edge_serial->read_urb->transfer_buffer_length, | |
904 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 905 | edge_serial->read_in_progress = false; |
1da177e4 LT |
906 | |
907 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
908 | * this interrupt will continue as long |
909 | * as the edgeport is connected */ | |
910 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
911 | GFP_KERNEL); | |
1da177e4 | 912 | if (response) { |
03f0dbf7 AC |
913 | dev_err(&port->dev, |
914 | "%s - Error %d submitting control urb\n", | |
915 | __func__, response); | |
1da177e4 LT |
916 | } |
917 | } | |
03f0dbf7 | 918 | |
1da177e4 LT |
919 | /* initialize our wait queues */ |
920 | init_waitqueue_head(&edge_port->wait_open); | |
921 | init_waitqueue_head(&edge_port->wait_chase); | |
922 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
923 | init_waitqueue_head(&edge_port->wait_command); | |
924 | ||
925 | /* initialize our icount structure */ | |
03f0dbf7 | 926 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1da177e4 LT |
927 | |
928 | /* initialize our port settings */ | |
03f0dbf7 AC |
929 | edge_port->txCredits = 0; /* Can't send any data yet */ |
930 | /* Must always set this bit to enable ints! */ | |
931 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 932 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
933 | |
934 | /* send a open port command */ | |
cb8eaa8b RK |
935 | edge_port->openPending = true; |
936 | edge_port->open = false; | |
03f0dbf7 | 937 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
938 | |
939 | if (response < 0) { | |
03f0dbf7 AC |
940 | dev_err(&port->dev, "%s - error sending open port command\n", |
941 | __func__); | |
cb8eaa8b | 942 | edge_port->openPending = false; |
1da177e4 LT |
943 | return -ENODEV; |
944 | } | |
945 | ||
946 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
947 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
948 | OPEN_TIMEOUT); | |
1da177e4 | 949 | |
cb8eaa8b | 950 | if (!edge_port->open) { |
1da177e4 | 951 | /* open timed out */ |
441b62c1 | 952 | dbg("%s - open timedout", __func__); |
cb8eaa8b | 953 | edge_port->openPending = false; |
1da177e4 LT |
954 | return -ENODEV; |
955 | } | |
956 | ||
957 | /* create the txfifo */ | |
958 | edge_port->txfifo.head = 0; | |
959 | edge_port->txfifo.tail = 0; | |
960 | edge_port->txfifo.count = 0; | |
961 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 962 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
963 | |
964 | if (!edge_port->txfifo.fifo) { | |
441b62c1 | 965 | dbg("%s - no memory", __func__); |
335f8514 | 966 | edge_close(port); |
1da177e4 LT |
967 | return -ENOMEM; |
968 | } | |
969 | ||
970 | /* Allocate a URB for the write */ | |
03f0dbf7 | 971 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 972 | edge_port->write_in_progress = false; |
1da177e4 LT |
973 | |
974 | if (!edge_port->write_urb) { | |
441b62c1 | 975 | dbg("%s - no memory", __func__); |
335f8514 | 976 | edge_close(port); |
1da177e4 LT |
977 | return -ENOMEM; |
978 | } | |
979 | ||
03f0dbf7 AC |
980 | dbg("%s(%d) - Initialize TX fifo to %d bytes", |
981 | __func__, port->number, edge_port->maxTxCredits); | |
1da177e4 | 982 | |
441b62c1 | 983 | dbg("%s exited", __func__); |
1da177e4 LT |
984 | |
985 | return 0; | |
986 | } | |
987 | ||
988 | ||
989 | /************************************************************************ | |
990 | * | |
991 | * block_until_chase_response | |
992 | * | |
993 | * This function will block the close until one of the following: | |
994 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 995 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
996 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
997 | * | |
998 | ************************************************************************/ | |
999 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
1000 | { | |
1001 | DEFINE_WAIT(wait); | |
1002 | __u16 lastCredits; | |
1003 | int timeout = 1*HZ; | |
1004 | int loop = 10; | |
1005 | ||
1006 | while (1) { | |
03f0dbf7 | 1007 | /* Save Last credits */ |
1da177e4 LT |
1008 | lastCredits = edge_port->txCredits; |
1009 | ||
03f0dbf7 | 1010 | /* Did we get our Chase response */ |
cb8eaa8b | 1011 | if (!edge_port->chaseResponsePending) { |
441b62c1 | 1012 | dbg("%s - Got Chase Response", __func__); |
1da177e4 | 1013 | |
03f0dbf7 AC |
1014 | /* did we get all of our credit back? */ |
1015 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
441b62c1 | 1016 | dbg("%s - Got all credits", __func__); |
1da177e4 LT |
1017 | return; |
1018 | } | |
1019 | } | |
1020 | ||
03f0dbf7 AC |
1021 | /* Block the thread for a while */ |
1022 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1023 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1024 | schedule_timeout(timeout); |
1025 | finish_wait(&edge_port->wait_chase, &wait); | |
1026 | ||
1027 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 1028 | /* No activity.. count down. */ |
1da177e4 LT |
1029 | loop--; |
1030 | if (loop == 0) { | |
cb8eaa8b | 1031 | edge_port->chaseResponsePending = false; |
441b62c1 | 1032 | dbg("%s - Chase TIMEOUT", __func__); |
1da177e4 LT |
1033 | return; |
1034 | } | |
1035 | } else { | |
03f0dbf7 AC |
1036 | /* Reset timeout value back to 10 seconds */ |
1037 | dbg("%s - Last %d, Current %d", __func__, | |
1038 | lastCredits, edge_port->txCredits); | |
1da177e4 LT |
1039 | loop = 10; |
1040 | } | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | ||
1045 | /************************************************************************ | |
1046 | * | |
1047 | * block_until_tx_empty | |
1048 | * | |
1049 | * This function will block the close until one of the following: | |
1050 | * 1. TX count are 0 | |
1051 | * 2. The edgeport has stopped | |
dc0d5c1e | 1052 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
1053 | * |
1054 | ************************************************************************/ | |
03f0dbf7 | 1055 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 LT |
1056 | { |
1057 | DEFINE_WAIT(wait); | |
1058 | struct TxFifo *fifo = &edge_port->txfifo; | |
1059 | __u32 lastCount; | |
1060 | int timeout = HZ/10; | |
1061 | int loop = 30; | |
1062 | ||
1063 | while (1) { | |
03f0dbf7 | 1064 | /* Save Last count */ |
1da177e4 LT |
1065 | lastCount = fifo->count; |
1066 | ||
03f0dbf7 | 1067 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1068 | if (lastCount == 0) { |
441b62c1 | 1069 | dbg("%s - TX Buffer Empty", __func__); |
1da177e4 LT |
1070 | return; |
1071 | } | |
1072 | ||
03f0dbf7 AC |
1073 | /* Block the thread for a while */ |
1074 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1075 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1076 | schedule_timeout(timeout); |
1077 | finish_wait(&edge_port->wait_chase, &wait); | |
1078 | ||
441b62c1 | 1079 | dbg("%s wait", __func__); |
1da177e4 LT |
1080 | |
1081 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1082 | /* No activity.. count down. */ |
1da177e4 LT |
1083 | loop--; |
1084 | if (loop == 0) { | |
441b62c1 | 1085 | dbg("%s - TIMEOUT", __func__); |
1da177e4 LT |
1086 | return; |
1087 | } | |
1088 | } else { | |
03f0dbf7 | 1089 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1090 | loop = 30; |
1091 | } | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | ||
1096 | /***************************************************************************** | |
1097 | * edge_close | |
1098 | * this function is called by the tty driver when a port is closed | |
1099 | *****************************************************************************/ | |
335f8514 | 1100 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1101 | { |
1102 | struct edgeport_serial *edge_serial; | |
1103 | struct edgeport_port *edge_port; | |
1104 | int status; | |
1105 | ||
441b62c1 | 1106 | dbg("%s - port %d", __func__, port->number); |
03f0dbf7 | 1107 | |
1da177e4 LT |
1108 | edge_serial = usb_get_serial_data(port->serial); |
1109 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1110 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1111 | return; |
03f0dbf7 AC |
1112 | |
1113 | /* block until tx is empty */ | |
1da177e4 LT |
1114 | block_until_tx_empty(edge_port); |
1115 | ||
cb8eaa8b | 1116 | edge_port->closePending = true; |
1da177e4 | 1117 | |
6e8cf775 GKH |
1118 | if ((!edge_serial->is_epic) || |
1119 | ((edge_serial->is_epic) && | |
1120 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1121 | /* flush and chase */ | |
cb8eaa8b | 1122 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1123 | |
441b62c1 | 1124 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
03f0dbf7 AC |
1125 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1126 | if (status == 0) | |
1127 | /* block until chase finished */ | |
6e8cf775 | 1128 | block_until_chase_response(edge_port); |
03f0dbf7 | 1129 | else |
cb8eaa8b | 1130 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1131 | } |
1132 | ||
6e8cf775 GKH |
1133 | if ((!edge_serial->is_epic) || |
1134 | ((edge_serial->is_epic) && | |
1135 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1136 | /* close the port */ | |
441b62c1 | 1137 | dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__); |
03f0dbf7 | 1138 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1139 | } |
1da177e4 | 1140 | |
03f0dbf7 | 1141 | /* port->close = true; */ |
cb8eaa8b RK |
1142 | edge_port->closePending = false; |
1143 | edge_port->open = false; | |
1144 | edge_port->openPending = false; | |
1da177e4 | 1145 | |
9a25f44f | 1146 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1147 | |
1148 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1149 | /* if this urb had a transfer buffer already |
1150 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1151 | kfree(edge_port->write_urb->transfer_buffer); |
1152 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1153 | edge_port->write_urb = NULL; |
1154 | } | |
1bc3c9e1 JJ |
1155 | kfree(edge_port->txfifo.fifo); |
1156 | edge_port->txfifo.fifo = NULL; | |
1da177e4 | 1157 | |
441b62c1 | 1158 | dbg("%s exited", __func__); |
03f0dbf7 | 1159 | } |
1da177e4 LT |
1160 | |
1161 | /***************************************************************************** | |
1162 | * SerialWrite | |
03f0dbf7 AC |
1163 | * this function is called by the tty driver when data should be written |
1164 | * to the port. | |
1165 | * If successful, we return the number of bytes written, otherwise we | |
1166 | * return a negative error number. | |
1da177e4 | 1167 | *****************************************************************************/ |
95da310e AC |
1168 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1169 | const unsigned char *data, int count) | |
1da177e4 LT |
1170 | { |
1171 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1172 | struct TxFifo *fifo; | |
1173 | int copySize; | |
1174 | int bytesleft; | |
1175 | int firsthalf; | |
1176 | int secondhalf; | |
1177 | unsigned long flags; | |
1178 | ||
441b62c1 | 1179 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1180 | |
1181 | if (edge_port == NULL) | |
1182 | return -ENODEV; | |
1183 | ||
03f0dbf7 | 1184 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1185 | fifo = &edge_port->txfifo; |
1186 | ||
1187 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1188 | ||
03f0dbf7 AC |
1189 | /* calculate number of bytes to put in fifo */ |
1190 | copySize = min((unsigned int)count, | |
1191 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1192 | |
03f0dbf7 AC |
1193 | dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", |
1194 | __func__, port->number, count, | |
1195 | edge_port->txCredits - fifo->count, copySize); | |
1da177e4 | 1196 | |
03f0dbf7 AC |
1197 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1198 | and when txCredits is empty */ | |
1da177e4 | 1199 | if (copySize == 0) { |
441b62c1 | 1200 | dbg("%s - copySize = Zero", __func__); |
1da177e4 LT |
1201 | goto finish_write; |
1202 | } | |
1203 | ||
03f0dbf7 AC |
1204 | /* queue the data |
1205 | * since we can never overflow the buffer we do not have to check for a | |
1206 | * full condition | |
1207 | * | |
1208 | * the copy is done is two parts -- first fill to the end of the buffer | |
1209 | * then copy the reset from the start of the buffer | |
1210 | */ | |
1da177e4 | 1211 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 AC |
1212 | firsthalf = min(bytesleft, copySize); |
1213 | dbg("%s - copy %d bytes of %d into fifo ", __func__, | |
1214 | firsthalf, bytesleft); | |
1da177e4 LT |
1215 | |
1216 | /* now copy our data */ | |
1217 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
03f0dbf7 AC |
1218 | usb_serial_debug_data(debug, &port->dev, __func__, |
1219 | firsthalf, &fifo->fifo[fifo->head]); | |
1da177e4 | 1220 | |
03f0dbf7 | 1221 | /* update the index and size */ |
1da177e4 LT |
1222 | fifo->head += firsthalf; |
1223 | fifo->count += firsthalf; | |
1224 | ||
03f0dbf7 AC |
1225 | /* wrap the index */ |
1226 | if (fifo->head == fifo->size) | |
1da177e4 | 1227 | fifo->head = 0; |
1da177e4 LT |
1228 | |
1229 | secondhalf = copySize-firsthalf; | |
1230 | ||
1231 | if (secondhalf) { | |
441b62c1 | 1232 | dbg("%s - copy rest of data %d", __func__, secondhalf); |
1da177e4 | 1233 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
03f0dbf7 AC |
1234 | usb_serial_debug_data(debug, &port->dev, __func__, |
1235 | secondhalf, &fifo->fifo[fifo->head]); | |
1236 | /* update the index and size */ | |
1da177e4 LT |
1237 | fifo->count += secondhalf; |
1238 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1239 | /* No need to check for wrap since we can not get to end of |
1240 | * the fifo in this part | |
1241 | */ | |
1da177e4 LT |
1242 | } |
1243 | ||
1244 | finish_write: | |
1245 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1246 | ||
03f0dbf7 AC |
1247 | send_more_port_data((struct edgeport_serial *) |
1248 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1249 | |
03f0dbf7 AC |
1250 | dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__, |
1251 | copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1252 | |
03f0dbf7 | 1253 | return copySize; |
1da177e4 LT |
1254 | } |
1255 | ||
1256 | ||
1257 | /************************************************************************ | |
1258 | * | |
1259 | * send_more_port_data() | |
1260 | * | |
1261 | * This routine attempts to write additional UART transmit data | |
1262 | * to a port over the USB bulk pipe. It is called (1) when new | |
1263 | * data has been written to a port's TxBuffer from higher layers | |
1264 | * (2) when the peripheral sends us additional TxCredits indicating | |
1265 | * that it can accept more Tx data for a given port; and (3) when | |
1266 | * a bulk write completes successfully and we want to see if we | |
1267 | * can transmit more. | |
1268 | * | |
1269 | ************************************************************************/ | |
03f0dbf7 AC |
1270 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1271 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1272 | { |
1273 | struct TxFifo *fifo = &edge_port->txfifo; | |
1274 | struct urb *urb; | |
1275 | unsigned char *buffer; | |
1276 | int status; | |
1277 | int count; | |
1278 | int bytesleft; | |
1279 | int firsthalf; | |
1280 | int secondhalf; | |
1281 | unsigned long flags; | |
1282 | ||
441b62c1 | 1283 | dbg("%s(%d)", __func__, edge_port->port->number); |
1da177e4 LT |
1284 | |
1285 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1286 | ||
1287 | if (edge_port->write_in_progress || | |
1288 | !edge_port->open || | |
1289 | (fifo->count == 0)) { | |
03f0dbf7 AC |
1290 | dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", |
1291 | __func__, edge_port->port->number, | |
1292 | fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1293 | goto exit_send; |
1294 | } | |
1295 | ||
03f0dbf7 AC |
1296 | /* since the amount of data in the fifo will always fit into the |
1297 | * edgeport buffer we do not need to check the write length | |
1298 | * | |
1299 | * Do we have enough credits for this port to make it worthwhile | |
1300 | * to bother queueing a write. If it's too small, say a few bytes, | |
1301 | * it's better to wait for more credits so we can do a larger write. | |
1302 | */ | |
1303 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
1304 | dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", | |
1305 | __func__, edge_port->port->number, fifo->count, | |
1306 | edge_port->txCredits); | |
1da177e4 LT |
1307 | goto exit_send; |
1308 | } | |
1309 | ||
03f0dbf7 | 1310 | /* lock this write */ |
cb8eaa8b | 1311 | edge_port->write_in_progress = true; |
1da177e4 | 1312 | |
03f0dbf7 | 1313 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1314 | urb = edge_port->write_urb; |
1315 | ||
1bc3c9e1 JJ |
1316 | /* make sure transfer buffer is freed */ |
1317 | kfree(urb->transfer_buffer); | |
1318 | urb->transfer_buffer = NULL; | |
1da177e4 | 1319 | |
03f0dbf7 AC |
1320 | /* build the data header for the buffer and port that we are about |
1321 | to send out */ | |
1da177e4 | 1322 | count = fifo->count; |
03f0dbf7 | 1323 | buffer = kmalloc(count+2, GFP_ATOMIC); |
1da177e4 | 1324 | if (buffer == NULL) { |
03f0dbf7 AC |
1325 | dev_err(&edge_port->port->dev, |
1326 | "%s - no more kernel memory...\n", __func__); | |
cb8eaa8b | 1327 | edge_port->write_in_progress = false; |
1da177e4 LT |
1328 | goto exit_send; |
1329 | } | |
03f0dbf7 AC |
1330 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number |
1331 | - edge_port->port->serial->minor, count); | |
1332 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number | |
1333 | - edge_port->port->serial->minor, count); | |
1da177e4 LT |
1334 | |
1335 | /* now copy our data */ | |
1336 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1337 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1338 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1339 | fifo->tail += firsthalf; | |
1340 | fifo->count -= firsthalf; | |
03f0dbf7 | 1341 | if (fifo->tail == fifo->size) |
1da177e4 | 1342 | fifo->tail = 0; |
1da177e4 LT |
1343 | |
1344 | secondhalf = count-firsthalf; | |
1345 | if (secondhalf) { | |
03f0dbf7 AC |
1346 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1347 | secondhalf); | |
1da177e4 LT |
1348 | fifo->tail += secondhalf; |
1349 | fifo->count -= secondhalf; | |
1350 | } | |
1351 | ||
1352 | if (count) | |
03f0dbf7 AC |
1353 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1354 | __func__, count, &buffer[2]); | |
1da177e4 LT |
1355 | |
1356 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1357 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1358 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1359 | edge_serial->bulk_out_endpoint), | |
1360 | buffer, count+2, | |
1361 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1362 | |
1363 | /* decrement the number of credits we have by the number we just sent */ | |
1364 | edge_port->txCredits -= count; | |
1365 | edge_port->icount.tx += count; | |
1366 | ||
1367 | urb->dev = edge_serial->serial->dev; | |
1368 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1369 | if (status) { | |
1370 | /* something went wrong */ | |
03f0dbf7 AC |
1371 | dev_err(&edge_port->port->dev, |
1372 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", | |
1373 | __func__, status); | |
cb8eaa8b | 1374 | edge_port->write_in_progress = false; |
1da177e4 LT |
1375 | |
1376 | /* revert the credits as something bad happened. */ | |
1377 | edge_port->txCredits += count; | |
1378 | edge_port->icount.tx -= count; | |
1379 | } | |
03f0dbf7 AC |
1380 | dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", |
1381 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1382 | |
1383 | exit_send: | |
1384 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1385 | } | |
1386 | ||
1387 | ||
1388 | /***************************************************************************** | |
1389 | * edge_write_room | |
03f0dbf7 AC |
1390 | * this function is called by the tty driver when it wants to know how |
1391 | * many bytes of data we can accept for a specific port. If successful, | |
1392 | * we return the amount of room that we have for this port (the txCredits) | |
1393 | * otherwise we return a negative error number. | |
1da177e4 | 1394 | *****************************************************************************/ |
95da310e | 1395 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1396 | { |
95da310e | 1397 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1398 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1399 | int room; | |
1400 | unsigned long flags; | |
1401 | ||
441b62c1 | 1402 | dbg("%s", __func__); |
1da177e4 LT |
1403 | |
1404 | if (edge_port == NULL) | |
d76f2f44 | 1405 | return 0; |
cb8eaa8b | 1406 | if (edge_port->closePending) |
d76f2f44 | 1407 | return 0; |
1da177e4 | 1408 | |
441b62c1 | 1409 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1410 | |
1411 | if (!edge_port->open) { | |
441b62c1 | 1412 | dbg("%s - port not opened", __func__); |
d76f2f44 | 1413 | return 0; |
1da177e4 LT |
1414 | } |
1415 | ||
03f0dbf7 | 1416 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1417 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1418 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1419 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1420 | ||
441b62c1 | 1421 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
1422 | return room; |
1423 | } | |
1424 | ||
1425 | ||
1426 | /***************************************************************************** | |
1427 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1428 | * this function is called by the tty driver when it wants to know how |
1429 | * many bytes of data we currently have outstanding in the port (data that | |
1430 | * has been written, but hasn't made it out the port yet) | |
1431 | * If successful, we return the number of bytes left to be written in the | |
1432 | * system, | |
1da177e4 LT |
1433 | * Otherwise we return a negative error number. |
1434 | *****************************************************************************/ | |
95da310e | 1435 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1436 | { |
95da310e | 1437 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1438 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1439 | int num_chars; | |
1440 | unsigned long flags; | |
1441 | ||
441b62c1 | 1442 | dbg("%s", __func__); |
1da177e4 LT |
1443 | |
1444 | if (edge_port == NULL) | |
d76f2f44 | 1445 | return 0; |
cb8eaa8b | 1446 | if (edge_port->closePending) |
d76f2f44 | 1447 | return 0; |
1da177e4 LT |
1448 | |
1449 | if (!edge_port->open) { | |
441b62c1 | 1450 | dbg("%s - port not opened", __func__); |
d76f2f44 | 1451 | return 0; |
1da177e4 LT |
1452 | } |
1453 | ||
1454 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1455 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1456 | edge_port->txfifo.count; | |
1da177e4 LT |
1457 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1458 | if (num_chars) { | |
03f0dbf7 AC |
1459 | dbg("%s(port %d) - returns %d", __func__, |
1460 | port->number, num_chars); | |
1da177e4 LT |
1461 | } |
1462 | ||
1463 | return num_chars; | |
1464 | } | |
1465 | ||
1466 | ||
1467 | /***************************************************************************** | |
1468 | * SerialThrottle | |
1469 | * this function is called by the tty driver when it wants to stop the data | |
1470 | * being read from the port. | |
1471 | *****************************************************************************/ | |
95da310e | 1472 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1473 | { |
95da310e | 1474 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1475 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1476 | int status; |
1477 | ||
441b62c1 | 1478 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1479 | |
1480 | if (edge_port == NULL) | |
1481 | return; | |
1482 | ||
1483 | if (!edge_port->open) { | |
441b62c1 | 1484 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1485 | return; |
1486 | } | |
1487 | ||
1da177e4 LT |
1488 | /* if we are implementing XON/XOFF, send the stop character */ |
1489 | if (I_IXOFF(tty)) { | |
1490 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1491 | status = edge_write(tty, port, &stop_char, 1); |
1492 | if (status <= 0) | |
1da177e4 | 1493 | return; |
1da177e4 LT |
1494 | } |
1495 | ||
1496 | /* if we are implementing RTS/CTS, toggle that line */ | |
1497 | if (tty->termios->c_cflag & CRTSCTS) { | |
1498 | edge_port->shadowMCR &= ~MCR_RTS; | |
03f0dbf7 AC |
1499 | status = send_cmd_write_uart_register(edge_port, MCR, |
1500 | edge_port->shadowMCR); | |
1501 | if (status != 0) | |
1da177e4 | 1502 | return; |
1da177e4 LT |
1503 | } |
1504 | ||
1505 | return; | |
1506 | } | |
1507 | ||
1508 | ||
1509 | /***************************************************************************** | |
1510 | * edge_unthrottle | |
03f0dbf7 AC |
1511 | * this function is called by the tty driver when it wants to resume the |
1512 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1513 | *****************************************************************************/ |
95da310e | 1514 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1515 | { |
95da310e | 1516 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1517 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1518 | int status; |
1519 | ||
441b62c1 | 1520 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1521 | |
1522 | if (edge_port == NULL) | |
1523 | return; | |
1524 | ||
1525 | if (!edge_port->open) { | |
441b62c1 | 1526 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1527 | return; |
1528 | } | |
1529 | ||
1da177e4 LT |
1530 | /* if we are implementing XON/XOFF, send the start character */ |
1531 | if (I_IXOFF(tty)) { | |
1532 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1533 | status = edge_write(tty, port, &start_char, 1); |
1534 | if (status <= 0) | |
1da177e4 | 1535 | return; |
1da177e4 | 1536 | } |
1da177e4 LT |
1537 | /* if we are implementing RTS/CTS, toggle that line */ |
1538 | if (tty->termios->c_cflag & CRTSCTS) { | |
1539 | edge_port->shadowMCR |= MCR_RTS; | |
03f0dbf7 AC |
1540 | send_cmd_write_uart_register(edge_port, MCR, |
1541 | edge_port->shadowMCR); | |
1da177e4 | 1542 | } |
1da177e4 LT |
1543 | } |
1544 | ||
1545 | ||
1546 | /***************************************************************************** | |
1547 | * SerialSetTermios | |
03f0dbf7 AC |
1548 | * this function is called by the tty driver when it wants to change |
1549 | * the termios structure | |
1da177e4 | 1550 | *****************************************************************************/ |
95da310e AC |
1551 | static void edge_set_termios(struct tty_struct *tty, |
1552 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1553 | { |
1554 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1555 | unsigned int cflag; |
1556 | ||
1da177e4 | 1557 | cflag = tty->termios->c_cflag; |
441b62c1 | 1558 | dbg("%s - clfag %08x iflag %08x", __func__, |
1da177e4 | 1559 | tty->termios->c_cflag, tty->termios->c_iflag); |
441b62c1 | 1560 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
6ce073bd | 1561 | old_termios->c_cflag, old_termios->c_iflag); |
1da177e4 | 1562 | |
441b62c1 | 1563 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1564 | |
1565 | if (edge_port == NULL) | |
1566 | return; | |
1567 | ||
1568 | if (!edge_port->open) { | |
441b62c1 | 1569 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1570 | return; |
1571 | } | |
1572 | ||
1573 | /* change the port settings to the new ones specified */ | |
95da310e | 1574 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1575 | } |
1576 | ||
1577 | ||
1578 | /***************************************************************************** | |
1579 | * get_lsr_info - get line status register info | |
1580 | * | |
1581 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1582 | * is emptied. On bus types like RS485, the transmitter must | |
1583 | * release the bus after transmitting. This must be done when | |
1584 | * the transmit shift register is empty, not be done when the | |
1585 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1586 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1587 | *****************************************************************************/ |
03f0dbf7 AC |
1588 | static int get_lsr_info(struct edgeport_port *edge_port, |
1589 | unsigned int __user *value) | |
1da177e4 LT |
1590 | { |
1591 | unsigned int result = 0; | |
1592 | unsigned long flags; | |
1593 | ||
1594 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1595 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1596 | edge_port->txfifo.count == 0) { | |
441b62c1 | 1597 | dbg("%s -- Empty", __func__); |
1da177e4 LT |
1598 | result = TIOCSER_TEMT; |
1599 | } | |
1600 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1601 | ||
1602 | if (copy_to_user(value, &result, sizeof(int))) | |
1603 | return -EFAULT; | |
1604 | return 0; | |
1605 | } | |
1606 | ||
03f0dbf7 AC |
1607 | static int edge_tiocmset(struct tty_struct *tty, struct file *file, |
1608 | unsigned int set, unsigned int clear) | |
1da177e4 | 1609 | { |
95da310e | 1610 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1611 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1612 | unsigned int mcr; | |
1613 | ||
441b62c1 | 1614 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1615 | |
1616 | mcr = edge_port->shadowMCR; | |
1617 | if (set & TIOCM_RTS) | |
1618 | mcr |= MCR_RTS; | |
1619 | if (set & TIOCM_DTR) | |
1620 | mcr |= MCR_DTR; | |
1621 | if (set & TIOCM_LOOP) | |
1622 | mcr |= MCR_LOOPBACK; | |
1623 | ||
1624 | if (clear & TIOCM_RTS) | |
1625 | mcr &= ~MCR_RTS; | |
1626 | if (clear & TIOCM_DTR) | |
1627 | mcr &= ~MCR_DTR; | |
1628 | if (clear & TIOCM_LOOP) | |
1629 | mcr &= ~MCR_LOOPBACK; | |
1630 | ||
1631 | edge_port->shadowMCR = mcr; | |
1632 | ||
1633 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1634 | ||
1635 | return 0; | |
1636 | } | |
1637 | ||
95da310e | 1638 | static int edge_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 1639 | { |
95da310e | 1640 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1641 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1642 | unsigned int result = 0; | |
1643 | unsigned int msr; | |
1644 | unsigned int mcr; | |
1645 | ||
441b62c1 | 1646 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1647 | |
1648 | msr = edge_port->shadowMSR; | |
1649 | mcr = edge_port->shadowMCR; | |
1650 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1651 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1652 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1653 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1654 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1655 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1656 | ||
1657 | ||
441b62c1 | 1658 | dbg("%s -- %x", __func__, result); |
1da177e4 LT |
1659 | |
1660 | return result; | |
1661 | } | |
1662 | ||
03f0dbf7 AC |
1663 | static int get_serial_info(struct edgeport_port *edge_port, |
1664 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1665 | { |
1666 | struct serial_struct tmp; | |
1667 | ||
1668 | if (!retinfo) | |
1669 | return -EFAULT; | |
1670 | ||
1671 | memset(&tmp, 0, sizeof(tmp)); | |
1672 | ||
1673 | tmp.type = PORT_16550A; | |
1674 | tmp.line = edge_port->port->serial->minor; | |
1675 | tmp.port = edge_port->port->number; | |
1676 | tmp.irq = 0; | |
1677 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1678 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1679 | tmp.baud_base = 9600; | |
1680 | tmp.close_delay = 5*HZ; | |
1681 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1682 | |
1683 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1684 | return -EFAULT; | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | ||
1689 | ||
1690 | /***************************************************************************** | |
1691 | * SerialIoctl | |
1692 | * this function handles any ioctl calls to the driver | |
1693 | *****************************************************************************/ | |
95da310e AC |
1694 | static int edge_ioctl(struct tty_struct *tty, struct file *file, |
1695 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 1696 | { |
95da310e | 1697 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1698 | DEFINE_WAIT(wait); |
1699 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1700 | struct async_icount cnow; | |
1701 | struct async_icount cprev; | |
1702 | struct serial_icounter_struct icount; | |
1703 | ||
441b62c1 | 1704 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
1705 | |
1706 | switch (cmd) { | |
03f0dbf7 AC |
1707 | case TIOCSERGETLSR: |
1708 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); | |
1709 | return get_lsr_info(edge_port, (unsigned int __user *) arg); | |
1710 | ||
1711 | case TIOCGSERIAL: | |
1712 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); | |
1713 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); | |
1714 | ||
1715 | case TIOCMIWAIT: | |
1716 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
1717 | cprev = edge_port->icount; | |
1718 | while (1) { | |
1719 | prepare_to_wait(&edge_port->delta_msr_wait, | |
1720 | &wait, TASK_INTERRUPTIBLE); | |
1721 | schedule(); | |
1722 | finish_wait(&edge_port->delta_msr_wait, &wait); | |
1723 | /* see if a signal did it */ | |
1724 | if (signal_pending(current)) | |
1725 | return -ERESTARTSYS; | |
1726 | cnow = edge_port->icount; | |
1727 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1728 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1729 | return -EIO; /* no change => error */ | |
1730 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1731 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1732 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1733 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
1734 | return 0; | |
1da177e4 | 1735 | } |
03f0dbf7 AC |
1736 | cprev = cnow; |
1737 | } | |
1738 | /* NOTREACHED */ | |
1739 | break; | |
1da177e4 | 1740 | |
03f0dbf7 AC |
1741 | case TIOCGICOUNT: |
1742 | cnow = edge_port->icount; | |
1743 | memset(&icount, 0, sizeof(icount)); | |
1744 | icount.cts = cnow.cts; | |
1745 | icount.dsr = cnow.dsr; | |
1746 | icount.rng = cnow.rng; | |
1747 | icount.dcd = cnow.dcd; | |
1748 | icount.rx = cnow.rx; | |
1749 | icount.tx = cnow.tx; | |
1750 | icount.frame = cnow.frame; | |
1751 | icount.overrun = cnow.overrun; | |
1752 | icount.parity = cnow.parity; | |
1753 | icount.brk = cnow.brk; | |
1754 | icount.buf_overrun = cnow.buf_overrun; | |
1755 | ||
1756 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", | |
1757 | __func__, port->number, icount.rx, icount.tx); | |
1758 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) | |
1759 | return -EFAULT; | |
1760 | return 0; | |
1da177e4 | 1761 | } |
1da177e4 LT |
1762 | return -ENOIOCTLCMD; |
1763 | } | |
1764 | ||
1765 | ||
1766 | /***************************************************************************** | |
1767 | * SerialBreak | |
1768 | * this function sends a break to the port | |
1769 | *****************************************************************************/ | |
03f0dbf7 | 1770 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1771 | { |
95da310e | 1772 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1773 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1774 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1775 | int status; |
1776 | ||
6e8cf775 GKH |
1777 | if ((!edge_serial->is_epic) || |
1778 | ((edge_serial->is_epic) && | |
1779 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1780 | /* flush and chase */ | |
cb8eaa8b | 1781 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1782 | |
441b62c1 | 1783 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
03f0dbf7 | 1784 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1785 | if (status == 0) { |
03f0dbf7 | 1786 | /* block until chase finished */ |
6e8cf775 GKH |
1787 | block_until_chase_response(edge_port); |
1788 | } else { | |
cb8eaa8b | 1789 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1790 | } |
1da177e4 LT |
1791 | } |
1792 | ||
6e8cf775 GKH |
1793 | if ((!edge_serial->is_epic) || |
1794 | ((edge_serial->is_epic) && | |
1795 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1796 | if (break_state == -1) { | |
441b62c1 | 1797 | dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__); |
03f0dbf7 AC |
1798 | status = send_iosp_ext_cmd(edge_port, |
1799 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1800 | } else { |
441b62c1 | 1801 | dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__); |
03f0dbf7 AC |
1802 | status = send_iosp_ext_cmd(edge_port, |
1803 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1804 | } |
03f0dbf7 AC |
1805 | if (status) |
1806 | dbg("%s - error sending break set/clear command.", | |
1807 | __func__); | |
1da177e4 LT |
1808 | } |
1809 | ||
1810 | return; | |
1811 | } | |
1812 | ||
1813 | ||
1814 | /***************************************************************************** | |
1815 | * process_rcvd_data | |
1816 | * this function handles the data received on the bulk in pipe. | |
1817 | *****************************************************************************/ | |
03f0dbf7 AC |
1818 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1819 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 LT |
1820 | { |
1821 | struct usb_serial_port *port; | |
1822 | struct edgeport_port *edge_port; | |
1823 | struct tty_struct *tty; | |
1824 | __u16 lastBufferLength; | |
1825 | __u16 rxLen; | |
1826 | ||
441b62c1 | 1827 | dbg("%s", __func__); |
1da177e4 LT |
1828 | |
1829 | lastBufferLength = bufferLength + 1; | |
1830 | ||
1831 | while (bufferLength > 0) { | |
1832 | /* failsafe incase we get a message that we don't understand */ | |
1833 | if (lastBufferLength == bufferLength) { | |
441b62c1 | 1834 | dbg("%s - stuck in loop, exiting it.", __func__); |
1da177e4 LT |
1835 | break; |
1836 | } | |
1837 | lastBufferLength = bufferLength; | |
1838 | ||
1839 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1840 | case EXPECT_HDR1: |
1841 | edge_serial->rxHeader1 = *buffer; | |
1842 | ++buffer; | |
1843 | --bufferLength; | |
1da177e4 | 1844 | |
03f0dbf7 AC |
1845 | if (bufferLength == 0) { |
1846 | edge_serial->rxState = EXPECT_HDR2; | |
1847 | break; | |
1848 | } | |
1849 | /* otherwise, drop on through */ | |
1850 | case EXPECT_HDR2: | |
1851 | edge_serial->rxHeader2 = *buffer; | |
1852 | ++buffer; | |
1853 | --bufferLength; | |
1854 | ||
1855 | dbg("%s - Hdr1=%02X Hdr2=%02X", __func__, | |
1856 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
1857 | /* Process depending on whether this header is | |
1858 | * data or status */ | |
1859 | ||
1860 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1861 | /* Decode this status header and go to | |
1862 | * EXPECT_HDR1 (if we can process the status | |
1863 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1864 | * get the third byte. */ | |
1865 | edge_serial->rxPort = | |
1866 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1867 | edge_serial->rxStatusCode = | |
1868 | IOSP_GET_STATUS_CODE( | |
1869 | edge_serial->rxHeader1); | |
1870 | ||
1871 | if (!IOSP_STATUS_IS_2BYTE( | |
1872 | edge_serial->rxStatusCode)) { | |
1873 | /* This status needs additional bytes. | |
1874 | * Save what we have and then wait for | |
1875 | * more data. | |
1876 | */ | |
1877 | edge_serial->rxStatusParam | |
1878 | = edge_serial->rxHeader2; | |
1879 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1880 | break; |
1881 | } | |
03f0dbf7 AC |
1882 | /* We have all the header bytes, process the |
1883 | status now */ | |
1884 | process_rcvd_status(edge_serial, | |
1885 | edge_serial->rxHeader2, 0); | |
1886 | edge_serial->rxState = EXPECT_HDR1; | |
1887 | break; | |
1888 | } else { | |
1889 | edge_serial->rxPort = | |
1890 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1891 | edge_serial->rxBytesRemaining = | |
1892 | IOSP_GET_HDR_DATA_LEN( | |
1893 | edge_serial->rxHeader1, | |
1894 | edge_serial->rxHeader2); | |
1895 | dbg("%s - Data for Port %u Len %u", | |
1896 | __func__, | |
1897 | edge_serial->rxPort, | |
1898 | edge_serial->rxBytesRemaining); | |
1899 | ||
1900 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1901 | * ASSERT(DevExt->RxBytesRemaining < | |
1902 | * IOSP_MAX_DATA_LENGTH); | |
1903 | */ | |
1da177e4 | 1904 | |
03f0dbf7 AC |
1905 | if (bufferLength == 0) { |
1906 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1907 | break; |
1da177e4 | 1908 | } |
03f0dbf7 AC |
1909 | /* Else, drop through */ |
1910 | } | |
1911 | case EXPECT_DATA: /* Expect data */ | |
1912 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1913 | rxLen = bufferLength; | |
1914 | /* Expect data to start next buffer */ | |
1915 | edge_serial->rxState = EXPECT_DATA; | |
1916 | } else { | |
1917 | /* BufLen >= RxBytesRemaining */ | |
1918 | rxLen = edge_serial->rxBytesRemaining; | |
1919 | /* Start another header next time */ | |
1920 | edge_serial->rxState = EXPECT_HDR1; | |
1921 | } | |
1da177e4 | 1922 | |
03f0dbf7 AC |
1923 | bufferLength -= rxLen; |
1924 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1925 | |
03f0dbf7 AC |
1926 | /* spit this data back into the tty driver if this |
1927 | port is open */ | |
1928 | if (rxLen) { | |
1929 | port = edge_serial->serial->port[ | |
1930 | edge_serial->rxPort]; | |
1931 | edge_port = usb_get_serial_port_data(port); | |
1932 | if (edge_port->open) { | |
4a90f09b AC |
1933 | tty = tty_port_tty_get( |
1934 | &edge_port->port->port); | |
03f0dbf7 AC |
1935 | if (tty) { |
1936 | dbg("%s - Sending %d bytes to TTY for port %d", | |
1937 | __func__, rxLen, edge_serial->rxPort); | |
1938 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); | |
4a90f09b | 1939 | tty_kref_put(tty); |
1da177e4 | 1940 | } |
03f0dbf7 | 1941 | edge_port->icount.rx += rxLen; |
1da177e4 | 1942 | } |
03f0dbf7 AC |
1943 | buffer += rxLen; |
1944 | } | |
1945 | break; | |
1da177e4 | 1946 | |
03f0dbf7 AC |
1947 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1948 | edge_serial->rxHeader3 = *buffer; | |
1949 | ++buffer; | |
1950 | --bufferLength; | |
1951 | ||
1952 | /* We have all the header bytes, process the | |
1953 | status now */ | |
1954 | process_rcvd_status(edge_serial, | |
1955 | edge_serial->rxStatusParam, | |
1956 | edge_serial->rxHeader3); | |
1957 | edge_serial->rxState = EXPECT_HDR1; | |
1958 | break; | |
1da177e4 LT |
1959 | } |
1960 | } | |
1961 | } | |
1962 | ||
1963 | ||
1964 | /***************************************************************************** | |
1965 | * process_rcvd_status | |
03f0dbf7 AC |
1966 | * this function handles the any status messages received on the |
1967 | * bulk in pipe. | |
1da177e4 | 1968 | *****************************************************************************/ |
03f0dbf7 AC |
1969 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1970 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1971 | { |
1972 | struct usb_serial_port *port; | |
1973 | struct edgeport_port *edge_port; | |
4a90f09b | 1974 | struct tty_struct *tty; |
1da177e4 LT |
1975 | __u8 code = edge_serial->rxStatusCode; |
1976 | ||
1977 | /* switch the port pointer to the one being currently talked about */ | |
1978 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1979 | edge_port = usb_get_serial_port_data(port); | |
1980 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1981 | dev_err(&edge_serial->serial->dev->dev, |
1982 | "%s - edge_port == NULL for port %d\n", | |
1983 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1984 | return; |
1985 | } | |
1986 | ||
441b62c1 | 1987 | dbg("%s - port %d", __func__, edge_serial->rxPort); |
1da177e4 LT |
1988 | |
1989 | if (code == IOSP_EXT_STATUS) { | |
1990 | switch (byte2) { | |
03f0dbf7 AC |
1991 | case IOSP_EXT_STATUS_CHASE_RSP: |
1992 | /* we want to do EXT status regardless of port | |
1993 | * open/closed */ | |
1994 | dbg("%s - Port %u EXT CHASE_RSP Data = %02x", | |
1995 | __func__, edge_serial->rxPort, byte3); | |
1996 | /* Currently, the only EXT_STATUS is Chase, so process | |
1997 | * here instead of one more call to one more subroutine | |
1998 | * If/when more EXT_STATUS, there'll be more work to do | |
1999 | * Also, we currently clear flag and close the port | |
2000 | * regardless of content of above's Byte3. | |
2001 | * We could choose to do something else when Byte3 says | |
2002 | * Timeout on Chase from Edgeport, like wait longer in | |
2003 | * block_until_chase_response, but for now we don't. | |
2004 | */ | |
2005 | edge_port->chaseResponsePending = false; | |
2006 | wake_up(&edge_port->wait_chase); | |
2007 | return; | |
1da177e4 | 2008 | |
03f0dbf7 AC |
2009 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
2010 | dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __func__, edge_serial->rxPort, byte3); | |
2011 | /* Port->RxCheckRsp = true; */ | |
2012 | return; | |
1da177e4 LT |
2013 | } |
2014 | } | |
2015 | ||
2016 | if (code == IOSP_STATUS_OPEN_RSP) { | |
2017 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
2018 | edge_port->maxTxCredits = edge_port->txCredits; | |
441b62c1 | 2019 | dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits); |
03f0dbf7 | 2020 | handle_new_msr(edge_port, byte2); |
1da177e4 | 2021 | |
03f0dbf7 AC |
2022 | /* send the current line settings to the port so we are |
2023 | in sync with any further termios calls */ | |
4a90f09b AC |
2024 | tty = tty_port_tty_get(&edge_port->port->port); |
2025 | if (tty) { | |
2026 | change_port_settings(tty, | |
2027 | edge_port, tty->termios); | |
2028 | tty_kref_put(tty); | |
2029 | } | |
1da177e4 LT |
2030 | |
2031 | /* we have completed the open */ | |
cb8eaa8b RK |
2032 | edge_port->openPending = false; |
2033 | edge_port->open = true; | |
1da177e4 LT |
2034 | wake_up(&edge_port->wait_open); |
2035 | return; | |
2036 | } | |
2037 | ||
03f0dbf7 AC |
2038 | /* If port is closed, silently discard all rcvd status. We can |
2039 | * have cases where buffered status is received AFTER the close | |
2040 | * port command is sent to the Edgeport. | |
2041 | */ | |
2042 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 2043 | return; |
1da177e4 LT |
2044 | |
2045 | switch (code) { | |
03f0dbf7 AC |
2046 | /* Not currently sent by Edgeport */ |
2047 | case IOSP_STATUS_LSR: | |
2048 | dbg("%s - Port %u LSR Status = %02x", | |
2049 | __func__, edge_serial->rxPort, byte2); | |
2050 | handle_new_lsr(edge_port, false, byte2, 0); | |
2051 | break; | |
1da177e4 | 2052 | |
03f0dbf7 AC |
2053 | case IOSP_STATUS_LSR_DATA: |
2054 | dbg("%s - Port %u LSR Status = %02x, Data = %02x", | |
2055 | __func__, edge_serial->rxPort, byte2, byte3); | |
2056 | /* byte2 is LSR Register */ | |
2057 | /* byte3 is broken data byte */ | |
2058 | handle_new_lsr(edge_port, true, byte2, byte3); | |
2059 | break; | |
2060 | /* | |
2061 | * case IOSP_EXT_4_STATUS: | |
2062 | * dbg("%s - Port %u LSR Status = %02x Data = %02x", | |
2063 | * __func__, edge_serial->rxPort, byte2, byte3); | |
2064 | * break; | |
2065 | */ | |
2066 | case IOSP_STATUS_MSR: | |
2067 | dbg("%s - Port %u MSR Status = %02x", | |
2068 | __func__, edge_serial->rxPort, byte2); | |
2069 | /* | |
2070 | * Process this new modem status and generate appropriate | |
2071 | * events, etc, based on the new status. This routine | |
2072 | * also saves the MSR in Port->ShadowMsr. | |
2073 | */ | |
2074 | handle_new_msr(edge_port, byte2); | |
2075 | break; | |
1da177e4 | 2076 | |
03f0dbf7 AC |
2077 | default: |
2078 | dbg("%s - Unrecognized IOSP status code %u\n", __func__, code); | |
2079 | break; | |
1da177e4 | 2080 | } |
1da177e4 LT |
2081 | return; |
2082 | } | |
2083 | ||
2084 | ||
2085 | /***************************************************************************** | |
2086 | * edge_tty_recv | |
2087 | * this function passes data on to the tty flip buffer | |
2088 | *****************************************************************************/ | |
03f0dbf7 AC |
2089 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
2090 | unsigned char *data, int length) | |
1da177e4 LT |
2091 | { |
2092 | int cnt; | |
2093 | ||
2094 | do { | |
33f0f88f AC |
2095 | cnt = tty_buffer_request_room(tty, length); |
2096 | if (cnt < length) { | |
2097 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
441b62c1 | 2098 | __func__, length - cnt); |
03f0dbf7 | 2099 | if (cnt == 0) |
33f0f88f | 2100 | break; |
1da177e4 | 2101 | } |
33f0f88f | 2102 | tty_insert_flip_string(tty, data, cnt); |
1da177e4 LT |
2103 | data += cnt; |
2104 | length -= cnt; | |
2105 | } while (length > 0); | |
2106 | ||
2107 | tty_flip_buffer_push(tty); | |
2108 | } | |
2109 | ||
2110 | ||
2111 | /***************************************************************************** | |
2112 | * handle_new_msr | |
2113 | * this function handles any change to the msr register for a port. | |
2114 | *****************************************************************************/ | |
2115 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2116 | { | |
2117 | struct async_icount *icount; | |
2118 | ||
441b62c1 | 2119 | dbg("%s %02x", __func__, newMsr); |
1da177e4 | 2120 | |
03f0dbf7 AC |
2121 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
2122 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
2123 | icount = &edge_port->icount; |
2124 | ||
2125 | /* update input line counters */ | |
03f0dbf7 | 2126 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 2127 | icount->cts++; |
03f0dbf7 | 2128 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 2129 | icount->dsr++; |
03f0dbf7 | 2130 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 2131 | icount->dcd++; |
03f0dbf7 | 2132 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 2133 | icount->rng++; |
1da177e4 LT |
2134 | wake_up_interruptible(&edge_port->delta_msr_wait); |
2135 | } | |
2136 | ||
2137 | /* Save the new modem status */ | |
2138 | edge_port->shadowMSR = newMsr & 0xf0; | |
2139 | ||
2140 | return; | |
2141 | } | |
2142 | ||
2143 | ||
2144 | /***************************************************************************** | |
2145 | * handle_new_lsr | |
2146 | * this function handles any change to the lsr register for a port. | |
2147 | *****************************************************************************/ | |
03f0dbf7 AC |
2148 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
2149 | __u8 lsr, __u8 data) | |
1da177e4 | 2150 | { |
03f0dbf7 AC |
2151 | __u8 newLsr = (__u8) (lsr & (__u8) |
2152 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2153 | struct async_icount *icount; | |
1da177e4 | 2154 | |
441b62c1 | 2155 | dbg("%s - %02x", __func__, newLsr); |
1da177e4 LT |
2156 | |
2157 | edge_port->shadowLSR = lsr; | |
2158 | ||
2159 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
2160 | /* |
2161 | * Parity and Framing errors only count if they | |
2162 | * occur exclusive of a break being | |
2163 | * received. | |
2164 | */ | |
1da177e4 LT |
2165 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
2166 | } | |
2167 | ||
2168 | /* Place LSR data byte into Rx buffer */ | |
4a90f09b AC |
2169 | if (lsrData) { |
2170 | struct tty_struct *tty = | |
2171 | tty_port_tty_get(&edge_port->port->port); | |
2172 | if (tty) { | |
2173 | edge_tty_recv(&edge_port->port->dev, tty, &data, 1); | |
2174 | tty_kref_put(tty); | |
2175 | } | |
2176 | } | |
1da177e4 LT |
2177 | /* update input line counters */ |
2178 | icount = &edge_port->icount; | |
03f0dbf7 | 2179 | if (newLsr & LSR_BREAK) |
1da177e4 | 2180 | icount->brk++; |
03f0dbf7 | 2181 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 2182 | icount->overrun++; |
03f0dbf7 | 2183 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 2184 | icount->parity++; |
03f0dbf7 | 2185 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 2186 | icount->frame++; |
1da177e4 LT |
2187 | |
2188 | return; | |
2189 | } | |
2190 | ||
2191 | ||
2192 | /**************************************************************************** | |
2193 | * sram_write | |
03f0dbf7 | 2194 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2195 | * given address. |
2196 | * If successful returns the number of bytes written, otherwise it returns | |
2197 | * a negative error number of the problem. | |
2198 | ****************************************************************************/ | |
03f0dbf7 AC |
2199 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2200 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2201 | { |
2202 | int result; | |
2203 | __u16 current_length; | |
2204 | unsigned char *transfer_buffer; | |
2205 | ||
441b62c1 | 2206 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 | 2207 | |
03f0dbf7 | 2208 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2209 | if (!transfer_buffer) { |
03f0dbf7 AC |
2210 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2211 | __func__, 64); | |
1da177e4 LT |
2212 | return -ENOMEM; |
2213 | } | |
2214 | ||
2215 | /* need to split these writes up into 64 byte chunks */ | |
2216 | result = 0; | |
2217 | while (length > 0) { | |
03f0dbf7 | 2218 | if (length > 64) |
1da177e4 | 2219 | current_length = 64; |
03f0dbf7 | 2220 | else |
1da177e4 | 2221 | current_length = length; |
03f0dbf7 AC |
2222 | |
2223 | /* dbg("%s - writing %x, %x, %d", __func__, | |
2224 | extAddr, addr, current_length); */ | |
2225 | memcpy(transfer_buffer, data, current_length); | |
2226 | result = usb_control_msg(serial->dev, | |
2227 | usb_sndctrlpipe(serial->dev, 0), | |
2228 | USB_REQUEST_ION_WRITE_RAM, | |
2229 | 0x40, addr, extAddr, transfer_buffer, | |
2230 | current_length, 300); | |
1da177e4 LT |
2231 | if (result < 0) |
2232 | break; | |
2233 | length -= current_length; | |
2234 | addr += current_length; | |
2235 | data += current_length; | |
03f0dbf7 | 2236 | } |
1da177e4 | 2237 | |
03f0dbf7 | 2238 | kfree(transfer_buffer); |
1da177e4 LT |
2239 | return result; |
2240 | } | |
2241 | ||
2242 | ||
2243 | /**************************************************************************** | |
2244 | * rom_write | |
2245 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2246 | * given address. | |
2247 | * If successful returns the number of bytes written, otherwise it returns | |
2248 | * a negative error number of the problem. | |
2249 | ****************************************************************************/ | |
03f0dbf7 AC |
2250 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2251 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2252 | { |
2253 | int result; | |
2254 | __u16 current_length; | |
2255 | unsigned char *transfer_buffer; | |
2256 | ||
03f0dbf7 | 2257 | /* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */ |
1da177e4 | 2258 | |
03f0dbf7 | 2259 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2260 | if (!transfer_buffer) { |
03f0dbf7 AC |
2261 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2262 | __func__, 64); | |
1da177e4 LT |
2263 | return -ENOMEM; |
2264 | } | |
2265 | ||
2266 | /* need to split these writes up into 64 byte chunks */ | |
2267 | result = 0; | |
2268 | while (length > 0) { | |
03f0dbf7 | 2269 | if (length > 64) |
1da177e4 | 2270 | current_length = 64; |
03f0dbf7 | 2271 | else |
1da177e4 | 2272 | current_length = length; |
03f0dbf7 AC |
2273 | /* dbg("%s - writing %x, %x, %d", __func__, |
2274 | extAddr, addr, current_length); */ | |
2275 | memcpy(transfer_buffer, data, current_length); | |
2276 | result = usb_control_msg(serial->dev, | |
2277 | usb_sndctrlpipe(serial->dev, 0), | |
2278 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2279 | addr, extAddr, | |
2280 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2281 | if (result < 0) |
2282 | break; | |
2283 | length -= current_length; | |
2284 | addr += current_length; | |
2285 | data += current_length; | |
03f0dbf7 | 2286 | } |
1da177e4 | 2287 | |
03f0dbf7 | 2288 | kfree(transfer_buffer); |
1da177e4 LT |
2289 | return result; |
2290 | } | |
2291 | ||
2292 | ||
2293 | /**************************************************************************** | |
2294 | * rom_read | |
2295 | * reads a number of bytes from the Edgeport device starting at the given | |
2296 | * address. | |
2297 | * If successful returns the number of bytes read, otherwise it returns | |
2298 | * a negative error number of the problem. | |
2299 | ****************************************************************************/ | |
03f0dbf7 AC |
2300 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2301 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2302 | { |
2303 | int result; | |
2304 | __u16 current_length; | |
2305 | unsigned char *transfer_buffer; | |
2306 | ||
441b62c1 | 2307 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 | 2308 | |
03f0dbf7 | 2309 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2310 | if (!transfer_buffer) { |
03f0dbf7 AC |
2311 | dev_err(&serial->dev->dev, |
2312 | "%s - kmalloc(%d) failed.\n", __func__, 64); | |
1da177e4 LT |
2313 | return -ENOMEM; |
2314 | } | |
2315 | ||
2316 | /* need to split these reads up into 64 byte chunks */ | |
2317 | result = 0; | |
2318 | while (length > 0) { | |
03f0dbf7 | 2319 | if (length > 64) |
1da177e4 | 2320 | current_length = 64; |
03f0dbf7 | 2321 | else |
1da177e4 | 2322 | current_length = length; |
03f0dbf7 AC |
2323 | /* dbg("%s - %x, %x, %d", __func__, |
2324 | extAddr, addr, current_length); */ | |
2325 | result = usb_control_msg(serial->dev, | |
2326 | usb_rcvctrlpipe(serial->dev, 0), | |
2327 | USB_REQUEST_ION_READ_ROM, | |
2328 | 0xC0, addr, extAddr, transfer_buffer, | |
2329 | current_length, 300); | |
1da177e4 LT |
2330 | if (result < 0) |
2331 | break; | |
03f0dbf7 | 2332 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2333 | length -= current_length; |
2334 | addr += current_length; | |
2335 | data += current_length; | |
03f0dbf7 | 2336 | } |
1da177e4 | 2337 | |
03f0dbf7 | 2338 | kfree(transfer_buffer); |
1da177e4 LT |
2339 | return result; |
2340 | } | |
2341 | ||
2342 | ||
2343 | /**************************************************************************** | |
2344 | * send_iosp_ext_cmd | |
2345 | * Is used to send a IOSP message to the Edgeport device | |
2346 | ****************************************************************************/ | |
03f0dbf7 AC |
2347 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2348 | __u8 command, __u8 param) | |
1da177e4 LT |
2349 | { |
2350 | unsigned char *buffer; | |
2351 | unsigned char *currentCommand; | |
2352 | int length = 0; | |
2353 | int status = 0; | |
2354 | ||
441b62c1 | 2355 | dbg("%s - %d, %d", __func__, command, param); |
1da177e4 | 2356 | |
03f0dbf7 | 2357 | buffer = kmalloc(10, GFP_ATOMIC); |
1da177e4 | 2358 | if (!buffer) { |
03f0dbf7 AC |
2359 | dev_err(&edge_port->port->dev, |
2360 | "%s - kmalloc(%d) failed.\n", __func__, 10); | |
1da177e4 LT |
2361 | return -ENOMEM; |
2362 | } | |
2363 | ||
2364 | currentCommand = buffer; | |
2365 | ||
03f0dbf7 AC |
2366 | MAKE_CMD_EXT_CMD(¤tCommand, &length, |
2367 | edge_port->port->number - edge_port->port->serial->minor, | |
2368 | command, param); | |
1da177e4 | 2369 | |
03f0dbf7 | 2370 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2371 | if (status) { |
2372 | /* something bad happened, let's free up the memory */ | |
2373 | kfree(buffer); | |
2374 | } | |
2375 | ||
2376 | return status; | |
2377 | } | |
2378 | ||
2379 | ||
2380 | /***************************************************************************** | |
2381 | * write_cmd_usb | |
2382 | * this function writes the given buffer out to the bulk write endpoint. | |
2383 | *****************************************************************************/ | |
03f0dbf7 AC |
2384 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2385 | unsigned char *buffer, int length) | |
1da177e4 | 2386 | { |
03f0dbf7 AC |
2387 | struct edgeport_serial *edge_serial = |
2388 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2389 | int status = 0; |
2390 | struct urb *urb; | |
2391 | int timeout; | |
2392 | ||
03f0dbf7 AC |
2393 | usb_serial_debug_data(debug, &edge_port->port->dev, |
2394 | __func__, length, buffer); | |
1da177e4 LT |
2395 | |
2396 | /* Allocate our next urb */ | |
03f0dbf7 | 2397 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2398 | if (!urb) |
2399 | return -ENOMEM; | |
2400 | ||
96c706ed | 2401 | atomic_inc(&CmdUrbs); |
03f0dbf7 AC |
2402 | dbg("%s - ALLOCATE URB %p (outstanding %d)", |
2403 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2404 | |
03f0dbf7 AC |
2405 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2406 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2407 | edge_serial->bulk_out_endpoint), | |
2408 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2409 | |
cb8eaa8b | 2410 | edge_port->commandPending = true; |
1da177e4 LT |
2411 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2412 | ||
2413 | if (status) { | |
2414 | /* something went wrong */ | |
03f0dbf7 AC |
2415 | dev_err(&edge_port->port->dev, |
2416 | "%s - usb_submit_urb(write command) failed, status = %d\n", | |
2417 | __func__, status); | |
1da177e4 LT |
2418 | usb_kill_urb(urb); |
2419 | usb_free_urb(urb); | |
96c706ed | 2420 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2421 | return status; |
2422 | } | |
2423 | ||
03f0dbf7 | 2424 | /* wait for command to finish */ |
1da177e4 LT |
2425 | timeout = COMMAND_TIMEOUT; |
2426 | #if 0 | |
03f0dbf7 | 2427 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2428 | |
cb8eaa8b | 2429 | if (edge_port->commandPending) { |
1da177e4 | 2430 | /* command timed out */ |
441b62c1 | 2431 | dbg("%s - command timed out", __func__); |
1da177e4 LT |
2432 | status = -EINVAL; |
2433 | } | |
2434 | #endif | |
2435 | return status; | |
2436 | } | |
2437 | ||
2438 | ||
2439 | /***************************************************************************** | |
2440 | * send_cmd_write_baud_rate | |
2441 | * this function sends the proper command to change the baud rate of the | |
2442 | * specified port. | |
2443 | *****************************************************************************/ | |
03f0dbf7 AC |
2444 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2445 | int baudRate) | |
1da177e4 | 2446 | { |
03f0dbf7 AC |
2447 | struct edgeport_serial *edge_serial = |
2448 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2449 | unsigned char *cmdBuffer; |
2450 | unsigned char *currCmd; | |
2451 | int cmdLen = 0; | |
2452 | int divisor; | |
2453 | int status; | |
03f0dbf7 AC |
2454 | unsigned char number = |
2455 | edge_port->port->number - edge_port->port->serial->minor; | |
1da177e4 | 2456 | |
bc71e479 AK |
2457 | if (edge_serial->is_epic && |
2458 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
6e8cf775 GKH |
2459 | dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d", |
2460 | edge_port->port->number, baudRate); | |
2461 | return 0; | |
2462 | } | |
2463 | ||
03f0dbf7 AC |
2464 | dbg("%s - port = %d, baud = %d", __func__, |
2465 | edge_port->port->number, baudRate); | |
1da177e4 | 2466 | |
03f0dbf7 | 2467 | status = calc_baud_rate_divisor(baudRate, &divisor); |
1da177e4 | 2468 | if (status) { |
03f0dbf7 AC |
2469 | dev_err(&edge_port->port->dev, "%s - bad baud rate\n", |
2470 | __func__); | |
1da177e4 LT |
2471 | return status; |
2472 | } | |
2473 | ||
03f0dbf7 AC |
2474 | /* Alloc memory for the string of commands. */ |
2475 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
1da177e4 | 2476 | if (!cmdBuffer) { |
03f0dbf7 AC |
2477 | dev_err(&edge_port->port->dev, |
2478 | "%s - kmalloc(%d) failed.\n", __func__, 0x100); | |
1da177e4 LT |
2479 | return -ENOMEM; |
2480 | } | |
2481 | currCmd = cmdBuffer; | |
2482 | ||
03f0dbf7 AC |
2483 | /* Enable access to divisor latch */ |
2484 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2485 | |
03f0dbf7 AC |
2486 | /* Write the divisor itself */ |
2487 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2488 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2489 | |
03f0dbf7 AC |
2490 | /* Restore original value to disable access to divisor latch */ |
2491 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2492 | edge_port->shadowLCR); | |
1da177e4 | 2493 | |
03f0dbf7 | 2494 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2495 | if (status) { |
2496 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2497 | kfree(cmdBuffer); |
1da177e4 LT |
2498 | } |
2499 | ||
2500 | return status; | |
2501 | } | |
2502 | ||
2503 | ||
2504 | /***************************************************************************** | |
2505 | * calc_baud_rate_divisor | |
2506 | * this function calculates the proper baud rate divisor for the specified | |
2507 | * baud rate. | |
2508 | *****************************************************************************/ | |
03f0dbf7 | 2509 | static int calc_baud_rate_divisor(int baudrate, int *divisor) |
1da177e4 LT |
2510 | { |
2511 | int i; | |
2512 | __u16 custom; | |
2513 | ||
2514 | ||
441b62c1 | 2515 | dbg("%s - %d", __func__, baudrate); |
1da177e4 | 2516 | |
52950ed4 | 2517 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2518 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2519 | *divisor = divisor_table[i].Divisor; |
2520 | return 0; | |
2521 | } | |
2522 | } | |
2523 | ||
03f0dbf7 AC |
2524 | /* We have tried all of the standard baud rates |
2525 | * lets try to calculate the divisor for this baud rate | |
2526 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2527 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2528 | /* get divisor */ |
1da177e4 LT |
2529 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2530 | ||
2531 | *divisor = custom; | |
2532 | ||
441b62c1 | 2533 | dbg("%s - Baud %d = %d\n", __func__, baudrate, custom); |
1da177e4 LT |
2534 | return 0; |
2535 | } | |
2536 | ||
2537 | return -1; | |
2538 | } | |
2539 | ||
2540 | ||
2541 | /***************************************************************************** | |
2542 | * send_cmd_write_uart_register | |
03f0dbf7 | 2543 | * this function builds up a uart register message and sends to to the device. |
1da177e4 | 2544 | *****************************************************************************/ |
03f0dbf7 AC |
2545 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2546 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2547 | { |
03f0dbf7 AC |
2548 | struct edgeport_serial *edge_serial = |
2549 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2550 | unsigned char *cmdBuffer; |
2551 | unsigned char *currCmd; | |
2552 | unsigned long cmdLen = 0; | |
2553 | int status; | |
2554 | ||
03f0dbf7 AC |
2555 | dbg("%s - write to %s register 0x%02x", |
2556 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2557 | |
bc71e479 AK |
2558 | if (edge_serial->is_epic && |
2559 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2560 | regNum == MCR) { | |
beb7dd86 | 2561 | dbg("SendCmdWriteUartReg - Not writing to MCR Register"); |
6e8cf775 GKH |
2562 | return 0; |
2563 | } | |
2564 | ||
bc71e479 AK |
2565 | if (edge_serial->is_epic && |
2566 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2567 | regNum == LCR) { | |
03f0dbf7 | 2568 | dbg("SendCmdWriteUartReg - Not writing to LCR Register"); |
6e8cf775 GKH |
2569 | return 0; |
2570 | } | |
2571 | ||
03f0dbf7 AC |
2572 | /* Alloc memory for the string of commands. */ |
2573 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2574 | if (cmdBuffer == NULL) | |
1da177e4 | 2575 | return -ENOMEM; |
1da177e4 LT |
2576 | |
2577 | currCmd = cmdBuffer; | |
2578 | ||
03f0dbf7 AC |
2579 | /* Build a cmd in the buffer to write the given register */ |
2580 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, | |
2581 | edge_port->port->number - edge_port->port->serial->minor, | |
2582 | regNum, regValue); | |
1da177e4 LT |
2583 | |
2584 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2585 | if (status) { | |
2586 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2587 | kfree(cmdBuffer); |
1da177e4 LT |
2588 | } |
2589 | ||
2590 | return status; | |
2591 | } | |
2592 | ||
2593 | ||
2594 | /***************************************************************************** | |
2595 | * change_port_settings | |
03f0dbf7 AC |
2596 | * This routine is called to set the UART on the device to match the |
2597 | * specified new settings. | |
1da177e4 | 2598 | *****************************************************************************/ |
95da310e AC |
2599 | |
2600 | static void change_port_settings(struct tty_struct *tty, | |
2601 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2602 | { |
03f0dbf7 AC |
2603 | struct edgeport_serial *edge_serial = |
2604 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2605 | int baud; |
2606 | unsigned cflag; | |
2607 | __u8 mask = 0xff; | |
2608 | __u8 lData; | |
2609 | __u8 lParity; | |
2610 | __u8 lStop; | |
2611 | __u8 rxFlow; | |
2612 | __u8 txFlow; | |
2613 | int status; | |
2614 | ||
441b62c1 | 2615 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2616 | |
cb8eaa8b RK |
2617 | if (!edge_port->open && |
2618 | !edge_port->openPending) { | |
441b62c1 | 2619 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
2620 | return; |
2621 | } | |
2622 | ||
1da177e4 LT |
2623 | cflag = tty->termios->c_cflag; |
2624 | ||
2625 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2626 | case CS5: |
2627 | lData = LCR_BITS_5; mask = 0x1f; | |
2628 | dbg("%s - data bits = 5", __func__); | |
2629 | break; | |
2630 | case CS6: | |
2631 | lData = LCR_BITS_6; mask = 0x3f; | |
2632 | dbg("%s - data bits = 6", __func__); | |
2633 | break; | |
2634 | case CS7: | |
2635 | lData = LCR_BITS_7; mask = 0x7f; | |
2636 | dbg("%s - data bits = 7", __func__); | |
2637 | break; | |
2638 | default: | |
2639 | case CS8: | |
2640 | lData = LCR_BITS_8; | |
2641 | dbg("%s - data bits = 8", __func__); | |
2642 | break; | |
1da177e4 LT |
2643 | } |
2644 | ||
2645 | lParity = LCR_PAR_NONE; | |
2646 | if (cflag & PARENB) { | |
2647 | if (cflag & CMSPAR) { | |
2648 | if (cflag & PARODD) { | |
2649 | lParity = LCR_PAR_MARK; | |
441b62c1 | 2650 | dbg("%s - parity = mark", __func__); |
1da177e4 LT |
2651 | } else { |
2652 | lParity = LCR_PAR_SPACE; | |
441b62c1 | 2653 | dbg("%s - parity = space", __func__); |
1da177e4 LT |
2654 | } |
2655 | } else if (cflag & PARODD) { | |
2656 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2657 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2658 | } else { |
2659 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2660 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2661 | } |
2662 | } else { | |
441b62c1 | 2663 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2664 | } |
2665 | ||
2666 | if (cflag & CSTOPB) { | |
2667 | lStop = LCR_STOP_2; | |
441b62c1 | 2668 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2669 | } else { |
2670 | lStop = LCR_STOP_1; | |
441b62c1 | 2671 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2672 | } |
2673 | ||
2674 | /* figure out the flow control settings */ | |
2675 | rxFlow = txFlow = 0x00; | |
2676 | if (cflag & CRTSCTS) { | |
2677 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2678 | txFlow |= IOSP_TX_FLOW_CTS; | |
441b62c1 | 2679 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2680 | } else { |
441b62c1 | 2681 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2682 | } |
2683 | ||
03f0dbf7 AC |
2684 | /* if we are implementing XON/XOFF, set the start and stop character |
2685 | in the device */ | |
1da177e4 LT |
2686 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2687 | unsigned char stop_char = STOP_CHAR(tty); | |
2688 | unsigned char start_char = START_CHAR(tty); | |
2689 | ||
6e8cf775 GKH |
2690 | if ((!edge_serial->is_epic) || |
2691 | ((edge_serial->is_epic) && | |
2692 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
03f0dbf7 AC |
2693 | send_iosp_ext_cmd(edge_port, |
2694 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2695 | send_iosp_ext_cmd(edge_port, | |
2696 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2697 | } |
1da177e4 LT |
2698 | |
2699 | /* if we are implementing INBOUND XON/XOFF */ | |
2700 | if (I_IXOFF(tty)) { | |
2701 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
03f0dbf7 AC |
2702 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", |
2703 | __func__, start_char, stop_char); | |
1da177e4 | 2704 | } else { |
441b62c1 | 2705 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2706 | } |
2707 | ||
2708 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2709 | if (I_IXON(tty)) { | |
2710 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
03f0dbf7 AC |
2711 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", |
2712 | __func__, start_char, stop_char); | |
1da177e4 | 2713 | } else { |
441b62c1 | 2714 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2715 | } |
2716 | } | |
2717 | ||
2718 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2719 | if ((!edge_serial->is_epic) || |
2720 | ((edge_serial->is_epic) && | |
2721 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2722 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2723 | if ((!edge_serial->is_epic) || | |
2724 | ((edge_serial->is_epic) && | |
2725 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2726 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2727 | |
2728 | ||
2729 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2730 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2731 | ||
2732 | edge_port->validDataMask = mask; | |
2733 | ||
2734 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2735 | status = send_cmd_write_uart_register(edge_port, LCR, |
2736 | edge_port->shadowLCR); | |
2737 | if (status != 0) | |
1da177e4 | 2738 | return; |
1da177e4 LT |
2739 | |
2740 | /* set up the MCR register and send it to the EdgePort */ | |
2741 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2742 | if (cflag & CBAUD) |
1da177e4 | 2743 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2744 | |
2745 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2746 | edge_port->shadowMCR); | |
2747 | if (status != 0) | |
1da177e4 | 2748 | return; |
1da177e4 LT |
2749 | |
2750 | /* Determine divisor based on baud rate */ | |
2751 | baud = tty_get_baud_rate(tty); | |
2752 | if (!baud) { | |
2753 | /* pick a default, any default... */ | |
2754 | baud = 9600; | |
2755 | } | |
2756 | ||
441b62c1 | 2757 | dbg("%s - baud rate = %d", __func__, baud); |
03f0dbf7 | 2758 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2759 | if (status == -1) { |
2760 | /* Speed change was not possible - put back the old speed */ | |
2761 | baud = tty_termios_baud_rate(old_termios); | |
2762 | tty_encode_baud_rate(tty, baud, baud); | |
2763 | } | |
1da177e4 LT |
2764 | return; |
2765 | } | |
2766 | ||
2767 | ||
2768 | /**************************************************************************** | |
2769 | * unicode_to_ascii | |
2770 | * Turns a string from Unicode into ASCII. | |
2771 | * Doesn't do a good job with any characters that are outside the normal | |
2772 | * ASCII range, but it's only for debugging... | |
2773 | * NOTE: expects the unicode in LE format | |
2774 | ****************************************************************************/ | |
03f0dbf7 AC |
2775 | static void unicode_to_ascii(char *string, int buflen, |
2776 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2777 | { |
2778 | int i; | |
2779 | ||
ad93375a | 2780 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2781 | return; |
ad93375a | 2782 | --buflen; /* space for nul */ |
1da177e4 | 2783 | |
ad93375a PZ |
2784 | for (i = 0; i < unicode_size; i++) { |
2785 | if (i >= buflen) | |
2786 | break; | |
1da177e4 | 2787 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2788 | } |
2789 | string[i] = 0x00; | |
1da177e4 LT |
2790 | } |
2791 | ||
2792 | ||
2793 | /**************************************************************************** | |
2794 | * get_manufacturing_desc | |
03f0dbf7 | 2795 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2796 | * structure. |
2797 | ****************************************************************************/ | |
03f0dbf7 | 2798 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 LT |
2799 | { |
2800 | int response; | |
2801 | ||
2802 | dbg("getting manufacturer descriptor"); | |
2803 | ||
03f0dbf7 AC |
2804 | response = rom_read(edge_serial->serial, |
2805 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2806 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2807 | EDGE_MANUF_DESC_LEN, | |
2808 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2809 | |
03f0dbf7 AC |
2810 | if (response < 1) |
2811 | dev_err(&edge_serial->serial->dev->dev, | |
2812 | "error in getting manufacturer descriptor\n"); | |
2813 | else { | |
1da177e4 LT |
2814 | char string[30]; |
2815 | dbg("**Manufacturer Descriptor"); | |
03f0dbf7 AC |
2816 | dbg(" RomSize: %dK", |
2817 | edge_serial->manuf_descriptor.RomSize); | |
2818 | dbg(" RamSize: %dK", | |
2819 | edge_serial->manuf_descriptor.RamSize); | |
2820 | dbg(" CpuRev: %d", | |
2821 | edge_serial->manuf_descriptor.CpuRev); | |
2822 | dbg(" BoardRev: %d", | |
2823 | edge_serial->manuf_descriptor.BoardRev); | |
2824 | dbg(" NumPorts: %d", | |
2825 | edge_serial->manuf_descriptor.NumPorts); | |
2826 | dbg(" DescDate: %d/%d/%d", | |
2827 | edge_serial->manuf_descriptor.DescDate[0], | |
2828 | edge_serial->manuf_descriptor.DescDate[1], | |
2829 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2830 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2831 | edge_serial->manuf_descriptor.SerialNumber, |
2832 | edge_serial->manuf_descriptor.SerNumLength/2); | |
1da177e4 | 2833 | dbg(" SerialNumber: %s", string); |
4bc203d9 | 2834 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2835 | edge_serial->manuf_descriptor.AssemblyNumber, |
2836 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
1da177e4 | 2837 | dbg(" AssemblyNumber: %s", string); |
4bc203d9 | 2838 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2839 | edge_serial->manuf_descriptor.OemAssyNumber, |
2840 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
1da177e4 | 2841 | dbg(" OemAssyNumber: %s", string); |
03f0dbf7 AC |
2842 | dbg(" UartType: %d", |
2843 | edge_serial->manuf_descriptor.UartType); | |
2844 | dbg(" IonPid: %d", | |
2845 | edge_serial->manuf_descriptor.IonPid); | |
2846 | dbg(" IonConfig: %d", | |
2847 | edge_serial->manuf_descriptor.IonConfig); | |
1da177e4 LT |
2848 | } |
2849 | } | |
2850 | ||
2851 | ||
2852 | /**************************************************************************** | |
2853 | * get_boot_desc | |
03f0dbf7 | 2854 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2855 | * structure. |
2856 | ****************************************************************************/ | |
03f0dbf7 | 2857 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 LT |
2858 | { |
2859 | int response; | |
2860 | ||
2861 | dbg("getting boot descriptor"); | |
2862 | ||
03f0dbf7 AC |
2863 | response = rom_read(edge_serial->serial, |
2864 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2865 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2866 | EDGE_BOOT_DESC_LEN, | |
2867 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2868 | |
03f0dbf7 AC |
2869 | if (response < 1) |
2870 | dev_err(&edge_serial->serial->dev->dev, | |
2871 | "error in getting boot descriptor\n"); | |
2872 | else { | |
1da177e4 | 2873 | dbg("**Boot Descriptor:"); |
03f0dbf7 AC |
2874 | dbg(" BootCodeLength: %d", |
2875 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2876 | dbg(" MajorVersion: %d", | |
2877 | edge_serial->boot_descriptor.MajorVersion); | |
2878 | dbg(" MinorVersion: %d", | |
2879 | edge_serial->boot_descriptor.MinorVersion); | |
2880 | dbg(" BuildNumber: %d", | |
2881 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
2882 | dbg(" Capabilities: 0x%x", | |
2883 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); | |
2884 | dbg(" UConfig0: %d", | |
2885 | edge_serial->boot_descriptor.UConfig0); | |
2886 | dbg(" UConfig1: %d", | |
2887 | edge_serial->boot_descriptor.UConfig1); | |
1da177e4 LT |
2888 | } |
2889 | } | |
2890 | ||
2891 | ||
2892 | /**************************************************************************** | |
2893 | * load_application_firmware | |
2894 | * This is called to load the application firmware to the device | |
2895 | ****************************************************************************/ | |
03f0dbf7 | 2896 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2897 | { |
5b9ea932 JS |
2898 | const struct ihex_binrec *rec; |
2899 | const struct firmware *fw; | |
2900 | const char *fw_name; | |
2901 | const char *fw_info; | |
1da177e4 | 2902 | int response; |
5b9ea932 JS |
2903 | __u32 Operaddr; |
2904 | __u16 build; | |
1da177e4 LT |
2905 | |
2906 | switch (edge_serial->product_info.iDownloadFile) { | |
2907 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2908 | fw_info = "downloading firmware version (930)"; |
2909 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2910 | break; |
2911 | ||
2912 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2913 | fw_info = "downloading firmware version (80251)"; |
2914 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2915 | break; |
2916 | ||
2917 | case EDGE_DOWNLOAD_FILE_NONE: | |
2918 | dbg ("No download file specified, skipping download\n"); | |
2919 | return; | |
2920 | ||
2921 | default: | |
2922 | return; | |
2923 | } | |
2924 | ||
5b9ea932 JS |
2925 | response = request_ihex_firmware(&fw, fw_name, |
2926 | &edge_serial->serial->dev->dev); | |
2927 | if (response) { | |
2928 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
2929 | fw_name, response); | |
2930 | return; | |
2931 | } | |
2932 | ||
2933 | rec = (const struct ihex_binrec *)fw->data; | |
2934 | build = (rec->data[2] << 8) | rec->data[3]; | |
2935 | ||
2936 | dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build); | |
2937 | ||
2938 | edge_serial->product_info.FirmwareMajorVersion = fw->data[0]; | |
2939 | edge_serial->product_info.FirmwareMinorVersion = fw->data[1]; | |
2940 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); | |
1da177e4 | 2941 | |
5b9ea932 JS |
2942 | for (rec = ihex_next_binrec(rec); rec; |
2943 | rec = ihex_next_binrec(rec)) { | |
2944 | Operaddr = be32_to_cpu(rec->addr); | |
2945 | response = sram_write(edge_serial->serial, | |
2946 | Operaddr >> 16, | |
2947 | Operaddr & 0xFFFF, | |
2948 | be16_to_cpu(rec->len), | |
2949 | &rec->data[0]); | |
1da177e4 | 2950 | if (response < 0) { |
5b9ea932 JS |
2951 | dev_err(&edge_serial->serial->dev->dev, |
2952 | "sram_write failed (%x, %x, %d)\n", | |
2953 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2954 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2955 | break; |
2956 | } | |
2957 | } | |
2958 | ||
2959 | dbg("sending exec_dl_code"); | |
2960 | response = usb_control_msg (edge_serial->serial->dev, | |
2961 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2962 | USB_REQUEST_ION_EXEC_DL_CODE, | |
2963 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); | |
2964 | ||
5b9ea932 | 2965 | release_firmware(fw); |
1da177e4 LT |
2966 | return; |
2967 | } | |
2968 | ||
2969 | ||
2970 | /**************************************************************************** | |
2971 | * edge_startup | |
2972 | ****************************************************************************/ | |
03f0dbf7 | 2973 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2974 | { |
2975 | struct edgeport_serial *edge_serial; | |
2976 | struct edgeport_port *edge_port; | |
2977 | struct usb_device *dev; | |
bfd5df3c | 2978 | int i, j; |
6e8cf775 | 2979 | int response; |
cb8eaa8b RK |
2980 | bool interrupt_in_found; |
2981 | bool bulk_in_found; | |
2982 | bool bulk_out_found; | |
6e8cf775 GKH |
2983 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2984 | EDGE_COMPATIBILITY_MASK1, | |
2985 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2986 | |
2987 | dev = serial->dev; | |
2988 | ||
2989 | /* create our private serial structure */ | |
80b6ca48 | 2990 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2991 | if (edge_serial == NULL) { |
441b62c1 | 2992 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2993 | return -ENOMEM; |
2994 | } | |
1da177e4 LT |
2995 | spin_lock_init(&edge_serial->es_lock); |
2996 | edge_serial->serial = serial; | |
2997 | usb_set_serial_data(serial, edge_serial); | |
2998 | ||
2999 | /* get the name for the device from the device */ | |
ad93375a PZ |
3000 | i = get_string(dev, dev->descriptor.iManufacturer, |
3001 | &edge_serial->name[0], MAX_NAME_LEN+1); | |
3002 | edge_serial->name[i++] = ' '; | |
3003 | get_string(dev, dev->descriptor.iProduct, | |
3004 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); | |
1da177e4 LT |
3005 | |
3006 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
3007 | ||
6e8cf775 GKH |
3008 | /* Read the epic descriptor */ |
3009 | if (get_epic_descriptor(edge_serial) <= 0) { | |
3010 | /* memcpy descriptor to Supports structures */ | |
3011 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
3012 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 3013 | |
6e8cf775 | 3014 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 3015 | get_manufacturing_desc(edge_serial); |
1da177e4 | 3016 | |
6e8cf775 | 3017 | /* get the boot descriptor */ |
03f0dbf7 | 3018 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
3019 | |
3020 | get_product_info(edge_serial); | |
3021 | } | |
1da177e4 LT |
3022 | |
3023 | /* set the number of ports from the manufacturing description */ | |
3024 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
3025 | if ((!edge_serial->is_epic) && |
3026 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
3027 | dev_warn(&serial->dev->dev, "Device Reported %d serial ports " | |
3028 | "vs. core thinking we have %d ports, email " | |
898eb71c | 3029 | "greg@kroah.com this information.\n", |
6e8cf775 GKH |
3030 | edge_serial->product_info.NumPorts, |
3031 | serial->num_ports); | |
1da177e4 LT |
3032 | } |
3033 | ||
441b62c1 | 3034 | dbg("%s - time 1 %ld", __func__, jiffies); |
1da177e4 | 3035 | |
6e8cf775 GKH |
3036 | /* If not an EPiC device */ |
3037 | if (!edge_serial->is_epic) { | |
3038 | /* now load the application firmware into this device */ | |
03f0dbf7 | 3039 | load_application_firmware(edge_serial); |
1da177e4 | 3040 | |
441b62c1 | 3041 | dbg("%s - time 2 %ld", __func__, jiffies); |
1da177e4 | 3042 | |
6e8cf775 | 3043 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 3044 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 3045 | |
441b62c1 | 3046 | dbg("%s - time 3 %ld", __func__, jiffies); |
6e8cf775 GKH |
3047 | |
3048 | /* set the configuration to use #1 */ | |
03f0dbf7 AC |
3049 | /* dbg("set_configuration 1"); */ |
3050 | /* usb_set_configuration (dev, 1); */ | |
6e8cf775 | 3051 | } |
5b9ea932 JS |
3052 | dbg(" FirmwareMajorVersion %d.%d.%d", |
3053 | edge_serial->product_info.FirmwareMajorVersion, | |
3054 | edge_serial->product_info.FirmwareMinorVersion, | |
3055 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 3056 | |
03f0dbf7 | 3057 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
3058 | * as the structures aren't created yet. */ |
3059 | ||
3060 | /* set up our port private structures */ | |
3061 | for (i = 0; i < serial->num_ports; ++i) { | |
03f0dbf7 | 3062 | edge_port = kmalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 3063 | if (edge_port == NULL) { |
03f0dbf7 AC |
3064 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
3065 | __func__); | |
bfd5df3c | 3066 | for (j = 0; j < i; ++j) { |
03f0dbf7 AC |
3067 | kfree(usb_get_serial_port_data(serial->port[j])); |
3068 | usb_set_serial_port_data(serial->port[j], | |
3069 | NULL); | |
bfd5df3c | 3070 | } |
1da177e4 LT |
3071 | usb_set_serial_data(serial, NULL); |
3072 | kfree(edge_serial); | |
3073 | return -ENOMEM; | |
3074 | } | |
03f0dbf7 | 3075 | memset(edge_port, 0, sizeof(struct edgeport_port)); |
1da177e4 LT |
3076 | spin_lock_init(&edge_port->ep_lock); |
3077 | edge_port->port = serial->port[i]; | |
3078 | usb_set_serial_port_data(serial->port[i], edge_port); | |
3079 | } | |
6e8cf775 GKH |
3080 | |
3081 | response = 0; | |
3082 | ||
3083 | if (edge_serial->is_epic) { | |
03f0dbf7 AC |
3084 | /* EPIC thing, set up our interrupt polling now and our read |
3085 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 3086 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
03f0dbf7 AC |
3087 | for (i = 0; i < serial->interface->altsetting[0] |
3088 | .desc.bNumEndpoints; ++i) { | |
6e8cf775 GKH |
3089 | struct usb_endpoint_descriptor *endpoint; |
3090 | int buffer_size; | |
3091 | ||
03f0dbf7 AC |
3092 | endpoint = &serial->interface->altsetting[0]. |
3093 | endpoint[i].desc; | |
6e8cf775 | 3094 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); |
cb8eaa8b | 3095 | if (!interrupt_in_found && |
6e8cf775 GKH |
3096 | (usb_endpoint_is_int_in(endpoint))) { |
3097 | /* we found a interrupt in endpoint */ | |
3098 | dbg("found interrupt in"); | |
3099 | ||
3100 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3101 | edge_serial->interrupt_read_urb = |
3102 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3103 | if (!edge_serial->interrupt_read_urb) { |
194343d9 | 3104 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3105 | return -ENOMEM; |
3106 | } | |
03f0dbf7 AC |
3107 | edge_serial->interrupt_in_buffer = |
3108 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3109 | if (!edge_serial->interrupt_in_buffer) { |
194343d9 | 3110 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3111 | usb_free_urb(edge_serial->interrupt_read_urb); |
3112 | return -ENOMEM; | |
3113 | } | |
03f0dbf7 AC |
3114 | edge_serial->interrupt_in_endpoint = |
3115 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3116 | |
3117 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
3118 | usb_fill_int_urb( |
3119 | edge_serial->interrupt_read_urb, | |
3120 | dev, | |
3121 | usb_rcvintpipe(dev, | |
3122 | endpoint->bEndpointAddress), | |
3123 | edge_serial->interrupt_in_buffer, | |
3124 | buffer_size, | |
3125 | edge_interrupt_callback, | |
3126 | edge_serial, | |
3127 | endpoint->bInterval); | |
6e8cf775 | 3128 | |
cb8eaa8b | 3129 | interrupt_in_found = true; |
6e8cf775 GKH |
3130 | } |
3131 | ||
cb8eaa8b | 3132 | if (!bulk_in_found && |
03f0dbf7 | 3133 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 GKH |
3134 | /* we found a bulk in endpoint */ |
3135 | dbg("found bulk in"); | |
3136 | ||
3137 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3138 | edge_serial->read_urb = |
3139 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3140 | if (!edge_serial->read_urb) { |
194343d9 | 3141 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3142 | return -ENOMEM; |
3143 | } | |
03f0dbf7 AC |
3144 | edge_serial->bulk_in_buffer = |
3145 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3146 | if (!edge_serial->bulk_in_buffer) { |
194343d9 | 3147 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3148 | usb_free_urb(edge_serial->read_urb); |
3149 | return -ENOMEM; | |
3150 | } | |
03f0dbf7 AC |
3151 | edge_serial->bulk_in_endpoint = |
3152 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3153 | |
3154 | /* set up our bulk in urb */ | |
3155 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
3156 | usb_rcvbulkpipe(dev, |
3157 | endpoint->bEndpointAddress), | |
3158 | edge_serial->bulk_in_buffer, | |
3159 | le16_to_cpu(endpoint->wMaxPacketSize), | |
3160 | edge_bulk_in_callback, | |
3161 | edge_serial); | |
cb8eaa8b | 3162 | bulk_in_found = true; |
6e8cf775 GKH |
3163 | } |
3164 | ||
cb8eaa8b | 3165 | if (!bulk_out_found && |
6e8cf775 GKH |
3166 | (usb_endpoint_is_bulk_out(endpoint))) { |
3167 | /* we found a bulk out endpoint */ | |
3168 | dbg("found bulk out"); | |
03f0dbf7 AC |
3169 | edge_serial->bulk_out_endpoint = |
3170 | endpoint->bEndpointAddress; | |
cb8eaa8b | 3171 | bulk_out_found = true; |
6e8cf775 GKH |
3172 | } |
3173 | } | |
3174 | ||
cb8eaa8b | 3175 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
194343d9 GKH |
3176 | dev_err(&dev->dev, "Error - the proper endpoints " |
3177 | "were not found!\n"); | |
6e8cf775 GKH |
3178 | return -ENODEV; |
3179 | } | |
3180 | ||
3181 | /* start interrupt read for this edgeport this interrupt will | |
3182 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
3183 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
3184 | GFP_KERNEL); | |
6e8cf775 | 3185 | if (response) |
194343d9 GKH |
3186 | dev_err(&dev->dev, |
3187 | "%s - Error %d submitting control urb\n", | |
3188 | __func__, response); | |
6e8cf775 GKH |
3189 | } |
3190 | return response; | |
1da177e4 LT |
3191 | } |
3192 | ||
3193 | ||
3194 | /**************************************************************************** | |
f9c99bb8 | 3195 | * edge_disconnect |
1da177e4 LT |
3196 | * This function is called whenever the device is removed from the usb bus. |
3197 | ****************************************************************************/ | |
f9c99bb8 | 3198 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 3199 | { |
6e8cf775 | 3200 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 3201 | |
441b62c1 | 3202 | dbg("%s", __func__); |
1da177e4 LT |
3203 | |
3204 | /* stop reads and writes on all ports */ | |
6e8cf775 GKH |
3205 | /* free up our endpoint stuff */ |
3206 | if (edge_serial->is_epic) { | |
74ac07e8 | 3207 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
3208 | usb_free_urb(edge_serial->interrupt_read_urb); |
3209 | kfree(edge_serial->interrupt_in_buffer); | |
3210 | ||
74ac07e8 | 3211 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
3212 | usb_free_urb(edge_serial->read_urb); |
3213 | kfree(edge_serial->bulk_in_buffer); | |
3214 | } | |
f9c99bb8 AS |
3215 | } |
3216 | ||
3217 | ||
3218 | /**************************************************************************** | |
3219 | * edge_release | |
3220 | * This function is called when the device structure is deallocated. | |
3221 | ****************************************************************************/ | |
3222 | static void edge_release(struct usb_serial *serial) | |
3223 | { | |
3224 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
3225 | int i; | |
3226 | ||
3227 | dbg("%s", __func__); | |
3228 | ||
3229 | for (i = 0; i < serial->num_ports; ++i) | |
3230 | kfree(usb_get_serial_port_data(serial->port[i])); | |
6e8cf775 GKH |
3231 | |
3232 | kfree(edge_serial); | |
1da177e4 LT |
3233 | } |
3234 | ||
3235 | ||
3236 | /**************************************************************************** | |
3237 | * edgeport_init | |
3238 | * This is called by the module subsystem, or on startup to initialize us | |
3239 | ****************************************************************************/ | |
3240 | static int __init edgeport_init(void) | |
3241 | { | |
3242 | int retval; | |
3243 | ||
3244 | retval = usb_serial_register(&edgeport_2port_device); | |
3245 | if (retval) | |
3246 | goto failed_2port_device_register; | |
3247 | retval = usb_serial_register(&edgeport_4port_device); | |
3248 | if (retval) | |
3249 | goto failed_4port_device_register; | |
3250 | retval = usb_serial_register(&edgeport_8port_device); | |
3251 | if (retval) | |
3252 | goto failed_8port_device_register; | |
6e8cf775 GKH |
3253 | retval = usb_serial_register(&epic_device); |
3254 | if (retval) | |
3255 | goto failed_epic_device_register; | |
1da177e4 | 3256 | retval = usb_register(&io_driver); |
03f0dbf7 | 3257 | if (retval) |
1da177e4 | 3258 | goto failed_usb_register; |
96c706ed | 3259 | atomic_set(&CmdUrbs, 0); |
c197a8db GKH |
3260 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
3261 | DRIVER_DESC "\n"); | |
1da177e4 LT |
3262 | return 0; |
3263 | ||
3264 | failed_usb_register: | |
6e8cf775 GKH |
3265 | usb_serial_deregister(&epic_device); |
3266 | failed_epic_device_register: | |
1da177e4 LT |
3267 | usb_serial_deregister(&edgeport_8port_device); |
3268 | failed_8port_device_register: | |
3269 | usb_serial_deregister(&edgeport_4port_device); | |
3270 | failed_4port_device_register: | |
3271 | usb_serial_deregister(&edgeport_2port_device); | |
3272 | failed_2port_device_register: | |
3273 | return retval; | |
3274 | } | |
3275 | ||
3276 | ||
3277 | /**************************************************************************** | |
3278 | * edgeport_exit | |
3279 | * Called when the driver is about to be unloaded. | |
3280 | ****************************************************************************/ | |
3281 | static void __exit edgeport_exit (void) | |
3282 | { | |
03f0dbf7 AC |
3283 | usb_deregister(&io_driver); |
3284 | usb_serial_deregister(&edgeport_2port_device); | |
3285 | usb_serial_deregister(&edgeport_4port_device); | |
3286 | usb_serial_deregister(&edgeport_8port_device); | |
3287 | usb_serial_deregister(&epic_device); | |
1da177e4 LT |
3288 | } |
3289 | ||
3290 | module_init(edgeport_init); | |
3291 | module_exit(edgeport_exit); | |
3292 | ||
3293 | /* Module information */ | |
03f0dbf7 AC |
3294 | MODULE_AUTHOR(DRIVER_AUTHOR); |
3295 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3296 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3297 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3298 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3299 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3300 | MODULE_FIRMWARE("edgeport/down2.fw"); | |
1da177e4 LT |
3301 | |
3302 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3303 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |