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