Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * Edgeport/4 | |
14 | * Edgeport/4t | |
15 | * Edgeport/2 | |
16 | * Edgeport/4i | |
17 | * Edgeport/2i | |
18 | * Edgeport/421 | |
19 | * Edgeport/21 | |
20 | * Rapidport/4 | |
21 | * Edgeport/8 | |
22 | * Edgeport/2D8 | |
23 | * Edgeport/4D8 | |
24 | * Edgeport/8i | |
25 | * | |
26 | * For questions or problems with this driver, contact Inside Out | |
27 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
28 | * or Al Borchers <alborchers@steinerpoint.com>. | |
29 | * | |
1da177e4 LT |
30 | */ |
31 | ||
1da177e4 LT |
32 | #include <linux/kernel.h> |
33 | #include <linux/jiffies.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/tty_driver.h> | |
39 | #include <linux/tty_flip.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/serial.h> | |
43 | #include <linux/ioctl.h> | |
44 | #include <linux/wait.h> | |
5b9ea932 JS |
45 | #include <linux/firmware.h> |
46 | #include <linux/ihex.h> | |
03f0dbf7 | 47 | #include <linux/uaccess.h> |
1da177e4 | 48 | #include <linux/usb.h> |
a969888c | 49 | #include <linux/usb/serial.h> |
1da177e4 LT |
50 | #include "io_edgeport.h" |
51 | #include "io_ionsp.h" /* info for the iosp messages */ | |
52 | #include "io_16654.h" /* 16654 UART defines */ | |
53 | ||
54 | /* | |
55 | * Version Information | |
56 | */ | |
57 | #define DRIVER_VERSION "v2.7" | |
58 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
59 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
60 | ||
1da177e4 LT |
61 | #define MAX_NAME_LEN 64 |
62 | ||
63 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
64 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
65 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
66 | ||
67 | /* receive port state */ | |
68 | enum RXSTATE { | |
03f0dbf7 AC |
69 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
70 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
71 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
72 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
73 | }; |
74 | ||
75 | ||
03f0dbf7 AC |
76 | /* Transmit Fifo |
77 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
78 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
79 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
80 | */ | |
81 | struct TxFifo { | |
82 | unsigned int head; /* index to head pointer (write) */ | |
83 | unsigned int tail; /* index to tail pointer (read) */ | |
84 | unsigned int count; /* Bytes in queue */ | |
85 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
86 | unsigned char *fifo; /* allocated Buffer */ | |
87 | }; | |
88 | ||
89 | /* This structure holds all of the local port information */ | |
90 | struct edgeport_port { | |
91 | __u16 txCredits; /* our current credits for this port */ | |
92 | __u16 maxTxCredits; /* the max size of the port */ | |
93 | ||
94 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
95 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 96 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
97 | spinlock_t ep_lock; |
98 | ||
99 | __u8 shadowLCR; /* last LCR value received */ | |
100 | __u8 shadowMCR; /* last MCR value received */ | |
101 | __u8 shadowMSR; /* last MSR value received */ | |
102 | __u8 shadowLSR; /* last LSR value received */ | |
103 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
104 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
105 | __u8 validDataMask; | |
106 | __u32 baudRate; | |
107 | ||
cb8eaa8b RK |
108 | bool open; |
109 | bool openPending; | |
110 | bool commandPending; | |
111 | bool closePending; | |
112 | bool chaseResponsePending; | |
1da177e4 LT |
113 | |
114 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
115 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
116 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
117 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
118 | ||
119 | struct async_icount icount; | |
120 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
121 | }; | |
122 | ||
123 | ||
124 | /* This structure holds all of the individual device information */ | |
125 | struct edgeport_serial { | |
ad93375a | 126 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
127 | |
128 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
129 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
130 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
131 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
132 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
133 | |
134 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
135 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
136 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
137 | |
138 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
139 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
140 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 141 | bool read_in_progress; |
1da177e4 LT |
142 | spinlock_t es_lock; |
143 | ||
144 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
145 | ||
146 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
147 | ||
148 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
149 | __u8 rxHeader1; /* receive header byte 1 */ | |
150 | __u8 rxHeader2; /* receive header byte 2 */ | |
151 | __u8 rxHeader3; /* receive header byte 3 */ | |
152 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
153 | __u8 rxStatusCode; /* the receive status code */ | |
154 | __u8 rxStatusParam; /* the receive status paramater */ | |
155 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
156 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
157 | }; | |
158 | ||
159 | /* baud rate information */ | |
160 | struct divisor_table_entry { | |
161 | __u32 BaudRate; | |
162 | __u16 Divisor; | |
163 | }; | |
164 | ||
03f0dbf7 AC |
165 | /* |
166 | * Define table of divisors for Rev A EdgePort/4 hardware | |
167 | * These assume a 3.6864MHz crystal, the standard /16, and | |
168 | * MCR.7 = 0. | |
169 | */ | |
170 | ||
4c4c9432 | 171 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
172 | { 50, 4608}, |
173 | { 75, 3072}, | |
174 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
175 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
176 | { 150, 1536}, |
177 | { 300, 768}, | |
178 | { 600, 384}, | |
179 | { 1200, 192}, | |
180 | { 1800, 128}, | |
181 | { 2400, 96}, | |
182 | { 4800, 48}, | |
183 | { 7200, 32}, | |
184 | { 9600, 24}, | |
185 | { 14400, 16}, | |
186 | { 19200, 12}, | |
187 | { 38400, 6}, | |
188 | { 57600, 4}, | |
189 | { 115200, 2}, | |
190 | { 230400, 1}, | |
191 | }; | |
192 | ||
193 | /* local variables */ | |
194 | static int debug; | |
195 | ||
03f0dbf7 | 196 | static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */ |
1da177e4 LT |
197 | |
198 | ||
199 | /* local function prototypes */ | |
200 | ||
201 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
202 | static void edge_interrupt_callback(struct urb *urb); |
203 | static void edge_bulk_in_callback(struct urb *urb); | |
204 | static void edge_bulk_out_data_callback(struct urb *urb); | |
205 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
206 | |
207 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 208 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 209 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
210 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
211 | const unsigned char *buf, int count); | |
212 | static int edge_write_room(struct tty_struct *tty); | |
213 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
214 | static void edge_throttle(struct tty_struct *tty); | |
215 | static void edge_unthrottle(struct tty_struct *tty); | |
216 | static void edge_set_termios(struct tty_struct *tty, | |
217 | struct usb_serial_port *port, | |
218 | struct ktermios *old_termios); | |
00a0d0d6 | 219 | static int edge_ioctl(struct tty_struct *tty, |
03f0dbf7 AC |
220 | unsigned int cmd, unsigned long arg); |
221 | static void edge_break(struct tty_struct *tty, int break_state); | |
60b33c13 | 222 | static int edge_tiocmget(struct tty_struct *tty); |
20b9d177 | 223 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 224 | unsigned int set, unsigned int clear); |
0bca1b91 AC |
225 | static int edge_get_icount(struct tty_struct *tty, |
226 | struct serial_icounter_struct *icount); | |
03f0dbf7 | 227 | static int edge_startup(struct usb_serial *serial); |
f9c99bb8 AS |
228 | static void edge_disconnect(struct usb_serial *serial); |
229 | static void edge_release(struct usb_serial *serial); | |
1da177e4 LT |
230 | |
231 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
232 | ||
1da177e4 | 233 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
234 | |
235 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
236 | unsigned char *buffer, __u16 bufferLength); | |
237 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
238 | __u8 byte2, __u8 byte3); | |
239 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, | |
240 | unsigned char *data, int length); | |
241 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); | |
242 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
243 | __u8 lsr, __u8 data); | |
244 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
245 | __u8 param); | |
246 | static int calc_baud_rate_divisor(int baud_rate, int *divisor); | |
247 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, | |
248 | int baudRate); | |
249 | static void change_port_settings(struct tty_struct *tty, | |
250 | struct edgeport_port *edge_port, | |
251 | struct ktermios *old_termios); | |
252 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
253 | __u8 regNum, __u8 regValue); | |
254 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
255 | unsigned char *buffer, int writeLength); | |
256 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
257 | struct edgeport_port *edge_port); | |
258 | ||
259 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
260 | __u16 length, const __u8 *data); | |
261 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
262 | __u16 length, __u8 *data); | |
263 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
264 | __u16 length, const __u8 *data); | |
265 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
266 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
267 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
268 | ||
269 | static void unicode_to_ascii(char *string, int buflen, | |
270 | __le16 *unicode, int unicode_size); | |
271 | ||
272 | ||
273 | /* ************************************************************************ */ | |
274 | /* ************************************************************************ */ | |
275 | /* ************************************************************************ */ | |
276 | /* ************************************************************************ */ | |
1da177e4 LT |
277 | |
278 | /************************************************************************ | |
279 | * * | |
280 | * update_edgeport_E2PROM() Compare current versions of * | |
281 | * Boot ROM and Manufacture * | |
282 | * Descriptors with versions * | |
283 | * embedded in this driver * | |
284 | * * | |
285 | ************************************************************************/ | |
03f0dbf7 | 286 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 LT |
287 | { |
288 | __u32 BootCurVer; | |
289 | __u32 BootNewVer; | |
5b9ea932 JS |
290 | __u8 BootMajorVersion; |
291 | __u8 BootMinorVersion; | |
292 | __u16 BootBuildNumber; | |
293 | __u32 Bootaddr; | |
294 | const struct ihex_binrec *rec; | |
295 | const struct firmware *fw; | |
296 | const char *fw_name; | |
1da177e4 LT |
297 | int response; |
298 | ||
1da177e4 | 299 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
300 | case EDGE_DOWNLOAD_FILE_I930: |
301 | fw_name = "edgeport/boot.fw"; | |
302 | break; | |
303 | case EDGE_DOWNLOAD_FILE_80251: | |
304 | fw_name = "edgeport/boot2.fw"; | |
305 | break; | |
306 | default: | |
307 | return; | |
1da177e4 LT |
308 | } |
309 | ||
5b9ea932 JS |
310 | response = request_ihex_firmware(&fw, fw_name, |
311 | &edge_serial->serial->dev->dev); | |
312 | if (response) { | |
313 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
314 | fw_name, response); | |
315 | return; | |
316 | } | |
317 | ||
318 | rec = (const struct ihex_binrec *)fw->data; | |
319 | BootMajorVersion = rec->data[0]; | |
320 | BootMinorVersion = rec->data[1]; | |
321 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
322 | ||
03f0dbf7 | 323 | /* Check Boot Image Version */ |
1da177e4 LT |
324 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
325 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
326 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
327 | ||
328 | BootNewVer = (BootMajorVersion << 24) + | |
329 | (BootMinorVersion << 16) + | |
5b9ea932 | 330 | BootBuildNumber; |
1da177e4 LT |
331 | |
332 | dbg("Current Boot Image version %d.%d.%d", | |
333 | edge_serial->boot_descriptor.MajorVersion, | |
334 | edge_serial->boot_descriptor.MinorVersion, | |
335 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
336 | ||
337 | ||
338 | if (BootNewVer > BootCurVer) { | |
339 | dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", | |
340 | edge_serial->boot_descriptor.MajorVersion, | |
341 | edge_serial->boot_descriptor.MinorVersion, | |
342 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 343 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 LT |
344 | |
345 | dbg("Downloading new Boot Image"); | |
346 | ||
5b9ea932 JS |
347 | for (rec = ihex_next_binrec(rec); rec; |
348 | rec = ihex_next_binrec(rec)) { | |
349 | Bootaddr = be32_to_cpu(rec->addr); | |
350 | response = rom_write(edge_serial->serial, | |
351 | Bootaddr >> 16, | |
352 | Bootaddr & 0xFFFF, | |
353 | be16_to_cpu(rec->len), | |
354 | &rec->data[0]); | |
1da177e4 | 355 | if (response < 0) { |
5b9ea932 JS |
356 | dev_err(&edge_serial->serial->dev->dev, |
357 | "rom_write failed (%x, %x, %d)\n", | |
358 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
359 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
360 | break; |
361 | } | |
362 | } | |
363 | } else { | |
364 | dbg("Boot Image -- already up to date"); | |
365 | } | |
5b9ea932 | 366 | release_firmware(fw); |
1da177e4 LT |
367 | } |
368 | ||
1da177e4 LT |
369 | #if 0 |
370 | /************************************************************************ | |
371 | * | |
372 | * Get string descriptor from device | |
373 | * | |
374 | ************************************************************************/ | |
03f0dbf7 AC |
375 | static int get_string_desc(struct usb_device *dev, int Id, |
376 | struct usb_string_descriptor **pRetDesc) | |
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, &StringDesc, |
384 | sizeof(StringDesc))) | |
1da177e4 | 385 | return 0; |
1da177e4 | 386 | |
03f0dbf7 AC |
387 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
388 | if (!pStringDesc) | |
1da177e4 | 389 | return -1; |
1da177e4 | 390 | |
03f0dbf7 AC |
391 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
392 | StringDesc.bLength)) { | |
1da177e4 LT |
393 | kfree(pStringDesc); |
394 | return -1; | |
395 | } | |
396 | ||
397 | *pRetDesc = pStringDesc; | |
398 | return 0; | |
399 | } | |
400 | #endif | |
401 | ||
6e8cf775 GKH |
402 | static void dump_product_info(struct edgeport_product_info *product_info) |
403 | { | |
03f0dbf7 | 404 | /* Dump Product Info structure */ |
6e8cf775 | 405 | dbg("**Product Information:"); |
03f0dbf7 AC |
406 | dbg(" ProductId %x", product_info->ProductId); |
407 | dbg(" NumPorts %d", product_info->NumPorts); | |
408 | dbg(" ProdInfoVer %d", product_info->ProdInfoVer); | |
6e8cf775 | 409 | dbg(" IsServer %d", product_info->IsServer); |
03f0dbf7 AC |
410 | dbg(" IsRS232 %d", product_info->IsRS232); |
411 | dbg(" IsRS422 %d", product_info->IsRS422); | |
412 | dbg(" IsRS485 %d", product_info->IsRS485); | |
413 | dbg(" RomSize %d", product_info->RomSize); | |
414 | dbg(" RamSize %d", product_info->RamSize); | |
415 | dbg(" CpuRev %x", product_info->CpuRev); | |
6e8cf775 GKH |
416 | dbg(" BoardRev %x", product_info->BoardRev); |
417 | dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, | |
418 | product_info->BootMinorVersion, | |
419 | le16_to_cpu(product_info->BootBuildNumber)); | |
03f0dbf7 AC |
420 | dbg(" FirmwareMajorVersion %d.%d.%d", |
421 | product_info->FirmwareMajorVersion, | |
422 | product_info->FirmwareMinorVersion, | |
423 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
424 | dbg(" ManufactureDescDate %d/%d/%d", | |
425 | product_info->ManufactureDescDate[0], | |
426 | product_info->ManufactureDescDate[1], | |
427 | product_info->ManufactureDescDate[2]+1900); | |
6e8cf775 GKH |
428 | dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); |
429 | dbg(" EpicVer %d", product_info->EpicVer); | |
430 | } | |
431 | ||
1da177e4 LT |
432 | static void get_product_info(struct edgeport_serial *edge_serial) |
433 | { | |
434 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
435 | ||
03f0dbf7 AC |
436 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
437 | ||
438 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
439 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
440 | product_info->ProdInfoVer = 0; | |
441 | ||
442 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
443 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
444 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
445 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
446 | ||
447 | product_info->BootMajorVersion = | |
448 | edge_serial->boot_descriptor.MajorVersion; | |
449 | product_info->BootMinorVersion = | |
450 | edge_serial->boot_descriptor.MinorVersion; | |
451 | product_info->BootBuildNumber = | |
452 | edge_serial->boot_descriptor.BuildNumber; | |
453 | ||
454 | memcpy(product_info->ManufactureDescDate, | |
455 | edge_serial->manuf_descriptor.DescDate, | |
456 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
457 | ||
458 | /* check if this is 2nd generation hardware */ | |
459 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
460 | & ION_DEVICE_ID_80251_NETCHIP) | |
461 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
462 | else | |
463 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
464 | ||
465 | /* Determine Product type and set appropriate flags */ | |
1da177e4 | 466 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
467 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
468 | case ION_DEVICE_ID_EDGEPORT_4T: | |
469 | case ION_DEVICE_ID_EDGEPORT_4: | |
470 | case ION_DEVICE_ID_EDGEPORT_2: | |
471 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
472 | case ION_DEVICE_ID_EDGEPORT_8: | |
473 | case ION_DEVICE_ID_EDGEPORT_421: | |
474 | case ION_DEVICE_ID_EDGEPORT_21: | |
475 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
476 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
477 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
478 | product_info->IsRS232 = 1; | |
479 | break; | |
1da177e4 | 480 | |
03f0dbf7 AC |
481 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
482 | product_info->IsRS422 = 1; | |
483 | product_info->IsRS485 = 1; | |
484 | break; | |
1da177e4 | 485 | |
03f0dbf7 AC |
486 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
487 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
488 | product_info->IsRS422 = 1; | |
489 | break; | |
1da177e4 LT |
490 | } |
491 | ||
6e8cf775 GKH |
492 | dump_product_info(product_info); |
493 | } | |
1da177e4 | 494 | |
6e8cf775 GKH |
495 | static int get_epic_descriptor(struct edgeport_serial *ep) |
496 | { | |
497 | int result; | |
498 | struct usb_serial *serial = ep->serial; | |
499 | struct edgeport_product_info *product_info = &ep->product_info; | |
500 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
501 | struct edge_compatibility_bits *bits; | |
502 | ||
503 | ep->is_epic = 0; | |
504 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
505 | USB_REQUEST_ION_GET_EPIC_DESC, | |
506 | 0xC0, 0x00, 0x00, | |
507 | &ep->epic_descriptor, | |
508 | sizeof(struct edge_compatibility_descriptor), | |
509 | 300); | |
510 | ||
441b62c1 | 511 | dbg("%s result = %d", __func__, result); |
6e8cf775 GKH |
512 | |
513 | if (result > 0) { | |
514 | ep->is_epic = 1; | |
515 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
516 | ||
03f0dbf7 AC |
517 | product_info->NumPorts = epic->NumPorts; |
518 | product_info->ProdInfoVer = 0; | |
519 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
520 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
521 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
522 | product_info->iDownloadFile = epic->iDownloadFile; | |
523 | product_info->EpicVer = epic->EpicVer; | |
524 | product_info->Epic = epic->Supports; | |
525 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
6e8cf775 GKH |
526 | dump_product_info(product_info); |
527 | ||
528 | bits = &ep->epic_descriptor.Supports; | |
529 | dbg("**EPIC descriptor:"); | |
530 | dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
03f0dbf7 AC |
531 | dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE"); |
532 | dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE"); | |
533 | dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE"); | |
534 | dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
535 | dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
536 | dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
537 | dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
538 | dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
539 | dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
540 | dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
541 | dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
542 | dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE"); | |
6e8cf775 GKH |
543 | } |
544 | ||
545 | return result; | |
1da177e4 LT |
546 | } |
547 | ||
548 | ||
549 | /************************************************************************/ | |
550 | /************************************************************************/ | |
551 | /* U S B C A L L B A C K F U N C T I O N S */ | |
552 | /* U S B C A L L B A C K F U N C T I O N S */ | |
553 | /************************************************************************/ | |
554 | /************************************************************************/ | |
555 | ||
556 | /***************************************************************************** | |
557 | * edge_interrupt_callback | |
03f0dbf7 | 558 | * this is the callback function for when we have received data on the |
1da177e4 LT |
559 | * interrupt endpoint. |
560 | *****************************************************************************/ | |
03f0dbf7 | 561 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 562 | { |
cdc97792 | 563 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
564 | struct edgeport_port *edge_port; |
565 | struct usb_serial_port *port; | |
4a90f09b | 566 | struct tty_struct *tty; |
1da177e4 LT |
567 | unsigned char *data = urb->transfer_buffer; |
568 | int length = urb->actual_length; | |
569 | int bytes_avail; | |
570 | int position; | |
571 | int txCredits; | |
572 | int portNumber; | |
573 | int result; | |
2a393f5f | 574 | int status = urb->status; |
1da177e4 | 575 | |
441b62c1 | 576 | dbg("%s", __func__); |
1da177e4 | 577 | |
2a393f5f | 578 | switch (status) { |
1da177e4 LT |
579 | case 0: |
580 | /* success */ | |
581 | break; | |
582 | case -ECONNRESET: | |
583 | case -ENOENT: | |
584 | case -ESHUTDOWN: | |
585 | /* this urb is terminated, clean up */ | |
2a393f5f | 586 | dbg("%s - urb shutting down with status: %d", |
03f0dbf7 | 587 | __func__, status); |
1da177e4 LT |
588 | return; |
589 | default: | |
03f0dbf7 | 590 | dbg("%s - nonzero urb status received: %d", __func__, status); |
1da177e4 LT |
591 | goto exit; |
592 | } | |
593 | ||
03f0dbf7 | 594 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 595 | if (length) { |
03f0dbf7 AC |
596 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, |
597 | __func__, length, data); | |
1da177e4 LT |
598 | |
599 | if (length > 1) { | |
600 | bytes_avail = data[0] | (data[1] << 8); | |
601 | if (bytes_avail) { | |
602 | spin_lock(&edge_serial->es_lock); | |
603 | edge_serial->rxBytesAvail += bytes_avail; | |
441b62c1 | 604 | dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); |
1da177e4 LT |
605 | |
606 | if (edge_serial->rxBytesAvail > 0 && | |
607 | !edge_serial->read_in_progress) { | |
441b62c1 | 608 | dbg("%s - posting a read", __func__); |
cb8eaa8b | 609 | edge_serial->read_in_progress = true; |
1da177e4 | 610 | |
03f0dbf7 AC |
611 | /* we have pending bytes on the |
612 | bulk in pipe, send a request */ | |
1da177e4 LT |
613 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
614 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); | |
615 | if (result) { | |
441b62c1 | 616 | dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result); |
cb8eaa8b | 617 | edge_serial->read_in_progress = false; |
1da177e4 LT |
618 | } |
619 | } | |
620 | spin_unlock(&edge_serial->es_lock); | |
621 | } | |
622 | } | |
623 | /* grab the txcredits for the ports if available */ | |
624 | position = 2; | |
625 | portNumber = 0; | |
03f0dbf7 AC |
626 | while ((position < length) && |
627 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
628 | txCredits = data[position] | (data[position+1] << 8); |
629 | if (txCredits) { | |
630 | port = edge_serial->serial->port[portNumber]; | |
631 | edge_port = usb_get_serial_port_data(port); | |
632 | if (edge_port->open) { | |
633 | spin_lock(&edge_port->ep_lock); | |
634 | edge_port->txCredits += txCredits; | |
635 | spin_unlock(&edge_port->ep_lock); | |
03f0dbf7 AC |
636 | dbg("%s - txcredits for port%d = %d", |
637 | __func__, portNumber, | |
638 | edge_port->txCredits); | |
1da177e4 | 639 | |
03f0dbf7 AC |
640 | /* tell the tty driver that something |
641 | has changed */ | |
4a90f09b AC |
642 | tty = tty_port_tty_get( |
643 | &edge_port->port->port); | |
644 | if (tty) { | |
645 | tty_wakeup(tty); | |
646 | tty_kref_put(tty); | |
647 | } | |
03f0dbf7 AC |
648 | /* Since we have more credit, check |
649 | if more data can be sent */ | |
650 | send_more_port_data(edge_serial, | |
651 | edge_port); | |
1da177e4 LT |
652 | } |
653 | } | |
654 | position += 2; | |
655 | ++portNumber; | |
656 | } | |
657 | } | |
658 | ||
659 | exit: | |
03f0dbf7 AC |
660 | result = usb_submit_urb(urb, GFP_ATOMIC); |
661 | if (result) | |
662 | dev_err(&urb->dev->dev, | |
663 | "%s - Error %d submitting control urb\n", | |
664 | __func__, result); | |
1da177e4 LT |
665 | } |
666 | ||
667 | ||
668 | /***************************************************************************** | |
669 | * edge_bulk_in_callback | |
03f0dbf7 | 670 | * this is the callback function for when we have received data on the |
1da177e4 LT |
671 | * bulk in endpoint. |
672 | *****************************************************************************/ | |
03f0dbf7 | 673 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 674 | { |
cdc97792 | 675 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 | 676 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 677 | int retval; |
1da177e4 | 678 | __u16 raw_data_length; |
2a393f5f | 679 | int status = urb->status; |
1da177e4 | 680 | |
441b62c1 | 681 | dbg("%s", __func__); |
1da177e4 | 682 | |
2a393f5f GKH |
683 | if (status) { |
684 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 685 | __func__, status); |
cb8eaa8b | 686 | edge_serial->read_in_progress = false; |
1da177e4 LT |
687 | return; |
688 | } | |
689 | ||
690 | if (urb->actual_length == 0) { | |
441b62c1 | 691 | dbg("%s - read bulk callback with no data", __func__); |
cb8eaa8b | 692 | edge_serial->read_in_progress = false; |
1da177e4 LT |
693 | return; |
694 | } | |
695 | ||
696 | raw_data_length = urb->actual_length; | |
697 | ||
03f0dbf7 AC |
698 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, |
699 | __func__, raw_data_length, data); | |
1da177e4 LT |
700 | |
701 | spin_lock(&edge_serial->es_lock); | |
702 | ||
703 | /* decrement our rxBytes available by the number that we just got */ | |
704 | edge_serial->rxBytesAvail -= raw_data_length; | |
705 | ||
03f0dbf7 AC |
706 | dbg("%s - Received = %d, rxBytesAvail %d", __func__, |
707 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 708 | |
03f0dbf7 | 709 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
710 | |
711 | /* check to see if there's any more data for us to read */ | |
712 | if (edge_serial->rxBytesAvail > 0) { | |
441b62c1 | 713 | dbg("%s - posting a read", __func__); |
1da177e4 | 714 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
2a393f5f GKH |
715 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
716 | if (retval) { | |
717 | dev_err(&urb->dev->dev, | |
718 | "%s - usb_submit_urb(read bulk) failed, " | |
441b62c1 | 719 | "retval = %d\n", __func__, retval); |
cb8eaa8b | 720 | edge_serial->read_in_progress = false; |
1da177e4 LT |
721 | } |
722 | } else { | |
cb8eaa8b | 723 | edge_serial->read_in_progress = false; |
1da177e4 LT |
724 | } |
725 | ||
726 | spin_unlock(&edge_serial->es_lock); | |
727 | } | |
728 | ||
729 | ||
730 | /***************************************************************************** | |
731 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
732 | * this is the callback function for when we have finished sending |
733 | * serial data on the bulk out endpoint. | |
1da177e4 | 734 | *****************************************************************************/ |
03f0dbf7 | 735 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 736 | { |
cdc97792 | 737 | struct edgeport_port *edge_port = urb->context; |
1da177e4 | 738 | struct tty_struct *tty; |
2a393f5f | 739 | int status = urb->status; |
1da177e4 | 740 | |
441b62c1 | 741 | dbg("%s", __func__); |
1da177e4 | 742 | |
2a393f5f GKH |
743 | if (status) { |
744 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 745 | __func__, status); |
1da177e4 LT |
746 | } |
747 | ||
4a90f09b | 748 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
749 | |
750 | if (tty && edge_port->open) { | |
03f0dbf7 AC |
751 | /* let the tty driver wakeup if it has a special |
752 | write_wakeup function */ | |
1da177e4 LT |
753 | tty_wakeup(tty); |
754 | } | |
4a90f09b | 755 | tty_kref_put(tty); |
1da177e4 | 756 | |
03f0dbf7 | 757 | /* Release the Write URB */ |
cb8eaa8b | 758 | edge_port->write_in_progress = false; |
1da177e4 | 759 | |
03f0dbf7 AC |
760 | /* Check if more data needs to be sent */ |
761 | send_more_port_data((struct edgeport_serial *) | |
762 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
763 | } |
764 | ||
765 | ||
766 | /***************************************************************************** | |
767 | * BulkOutCmdCallback | |
03f0dbf7 AC |
768 | * this is the callback function for when we have finished sending a |
769 | * command on the bulk out endpoint. | |
1da177e4 | 770 | *****************************************************************************/ |
03f0dbf7 | 771 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 772 | { |
cdc97792 | 773 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
774 | struct tty_struct *tty; |
775 | int status = urb->status; | |
776 | ||
441b62c1 | 777 | dbg("%s", __func__); |
1da177e4 | 778 | |
96c706ed | 779 | atomic_dec(&CmdUrbs); |
03f0dbf7 AC |
780 | dbg("%s - FREE URB %p (outstanding %d)", __func__, |
781 | urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
782 | |
783 | ||
784 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 785 | kfree(urb->transfer_buffer); |
1da177e4 LT |
786 | |
787 | /* Free the command urb */ | |
03f0dbf7 | 788 | usb_free_urb(urb); |
1da177e4 LT |
789 | |
790 | if (status) { | |
03f0dbf7 AC |
791 | dbg("%s - nonzero write bulk status received: %d", |
792 | __func__, status); | |
1da177e4 LT |
793 | return; |
794 | } | |
795 | ||
796 | /* Get pointer to tty */ | |
4a90f09b | 797 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
798 | |
799 | /* tell the tty driver that something has changed */ | |
800 | if (tty && edge_port->open) | |
801 | tty_wakeup(tty); | |
4a90f09b | 802 | tty_kref_put(tty); |
1da177e4 LT |
803 | |
804 | /* we have completed the command */ | |
cb8eaa8b | 805 | edge_port->commandPending = false; |
1da177e4 LT |
806 | wake_up(&edge_port->wait_command); |
807 | } | |
808 | ||
809 | ||
810 | /***************************************************************************** | |
811 | * Driver tty interface functions | |
812 | *****************************************************************************/ | |
813 | ||
814 | /***************************************************************************** | |
815 | * SerialOpen | |
816 | * this function is called by the tty driver when a port is opened | |
817 | * If successful, we return 0 | |
818 | * Otherwise we return a negative error number. | |
819 | *****************************************************************************/ | |
a509a7e4 | 820 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
821 | { |
822 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
823 | struct usb_serial *serial; | |
824 | struct edgeport_serial *edge_serial; | |
825 | int response; | |
826 | ||
441b62c1 | 827 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
828 | |
829 | if (edge_port == NULL) | |
830 | return -ENODEV; | |
831 | ||
03f0dbf7 AC |
832 | /* see if we've set up our endpoint info yet (can't set it up |
833 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
834 | serial = port->serial; |
835 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 836 | if (edge_serial == NULL) |
1da177e4 | 837 | return -ENODEV; |
1da177e4 LT |
838 | if (edge_serial->interrupt_in_buffer == NULL) { |
839 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 840 | |
1da177e4 | 841 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
842 | edge_serial->interrupt_in_buffer = |
843 | port0->interrupt_in_buffer; | |
844 | edge_serial->interrupt_in_endpoint = | |
845 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
846 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
847 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
848 | edge_serial->bulk_in_endpoint = |
849 | port0->bulk_in_endpointAddress; | |
1da177e4 | 850 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
851 | edge_serial->bulk_out_endpoint = |
852 | port0->bulk_out_endpointAddress; | |
853 | ||
1da177e4 LT |
854 | /* set up our interrupt urb */ |
855 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
856 | serial->dev, |
857 | usb_rcvintpipe(serial->dev, | |
858 | port0->interrupt_in_endpointAddress), | |
859 | port0->interrupt_in_buffer, | |
860 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
861 | edge_interrupt_callback, edge_serial, | |
862 | edge_serial->interrupt_read_urb->interval); | |
863 | ||
1da177e4 LT |
864 | /* set up our bulk in urb */ |
865 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
866 | usb_rcvbulkpipe(serial->dev, |
867 | port0->bulk_in_endpointAddress), | |
868 | port0->bulk_in_buffer, | |
869 | edge_serial->read_urb->transfer_buffer_length, | |
870 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 871 | edge_serial->read_in_progress = false; |
1da177e4 LT |
872 | |
873 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
874 | * this interrupt will continue as long |
875 | * as the edgeport is connected */ | |
876 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
877 | GFP_KERNEL); | |
1da177e4 | 878 | if (response) { |
03f0dbf7 AC |
879 | dev_err(&port->dev, |
880 | "%s - Error %d submitting control urb\n", | |
881 | __func__, response); | |
1da177e4 LT |
882 | } |
883 | } | |
03f0dbf7 | 884 | |
1da177e4 LT |
885 | /* initialize our wait queues */ |
886 | init_waitqueue_head(&edge_port->wait_open); | |
887 | init_waitqueue_head(&edge_port->wait_chase); | |
888 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
889 | init_waitqueue_head(&edge_port->wait_command); | |
890 | ||
891 | /* initialize our icount structure */ | |
03f0dbf7 | 892 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1da177e4 LT |
893 | |
894 | /* initialize our port settings */ | |
03f0dbf7 AC |
895 | edge_port->txCredits = 0; /* Can't send any data yet */ |
896 | /* Must always set this bit to enable ints! */ | |
897 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 898 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
899 | |
900 | /* send a open port command */ | |
cb8eaa8b RK |
901 | edge_port->openPending = true; |
902 | edge_port->open = false; | |
03f0dbf7 | 903 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
904 | |
905 | if (response < 0) { | |
03f0dbf7 AC |
906 | dev_err(&port->dev, "%s - error sending open port command\n", |
907 | __func__); | |
cb8eaa8b | 908 | edge_port->openPending = false; |
1da177e4 LT |
909 | return -ENODEV; |
910 | } | |
911 | ||
912 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
913 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
914 | OPEN_TIMEOUT); | |
1da177e4 | 915 | |
cb8eaa8b | 916 | if (!edge_port->open) { |
1da177e4 | 917 | /* open timed out */ |
441b62c1 | 918 | dbg("%s - open timedout", __func__); |
cb8eaa8b | 919 | edge_port->openPending = false; |
1da177e4 LT |
920 | return -ENODEV; |
921 | } | |
922 | ||
923 | /* create the txfifo */ | |
924 | edge_port->txfifo.head = 0; | |
925 | edge_port->txfifo.tail = 0; | |
926 | edge_port->txfifo.count = 0; | |
927 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 928 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
929 | |
930 | if (!edge_port->txfifo.fifo) { | |
441b62c1 | 931 | dbg("%s - no memory", __func__); |
335f8514 | 932 | edge_close(port); |
1da177e4 LT |
933 | return -ENOMEM; |
934 | } | |
935 | ||
936 | /* Allocate a URB for the write */ | |
03f0dbf7 | 937 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 938 | edge_port->write_in_progress = false; |
1da177e4 LT |
939 | |
940 | if (!edge_port->write_urb) { | |
441b62c1 | 941 | dbg("%s - no memory", __func__); |
335f8514 | 942 | edge_close(port); |
1da177e4 LT |
943 | return -ENOMEM; |
944 | } | |
945 | ||
03f0dbf7 AC |
946 | dbg("%s(%d) - Initialize TX fifo to %d bytes", |
947 | __func__, port->number, edge_port->maxTxCredits); | |
1da177e4 | 948 | |
441b62c1 | 949 | dbg("%s exited", __func__); |
1da177e4 LT |
950 | |
951 | return 0; | |
952 | } | |
953 | ||
954 | ||
955 | /************************************************************************ | |
956 | * | |
957 | * block_until_chase_response | |
958 | * | |
959 | * This function will block the close until one of the following: | |
960 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 961 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
962 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
963 | * | |
964 | ************************************************************************/ | |
965 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
966 | { | |
967 | DEFINE_WAIT(wait); | |
968 | __u16 lastCredits; | |
969 | int timeout = 1*HZ; | |
970 | int loop = 10; | |
971 | ||
972 | while (1) { | |
03f0dbf7 | 973 | /* Save Last credits */ |
1da177e4 LT |
974 | lastCredits = edge_port->txCredits; |
975 | ||
03f0dbf7 | 976 | /* Did we get our Chase response */ |
cb8eaa8b | 977 | if (!edge_port->chaseResponsePending) { |
441b62c1 | 978 | dbg("%s - Got Chase Response", __func__); |
1da177e4 | 979 | |
03f0dbf7 AC |
980 | /* did we get all of our credit back? */ |
981 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
441b62c1 | 982 | dbg("%s - Got all credits", __func__); |
1da177e4 LT |
983 | return; |
984 | } | |
985 | } | |
986 | ||
03f0dbf7 AC |
987 | /* Block the thread for a while */ |
988 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
989 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
990 | schedule_timeout(timeout); |
991 | finish_wait(&edge_port->wait_chase, &wait); | |
992 | ||
993 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 994 | /* No activity.. count down. */ |
1da177e4 LT |
995 | loop--; |
996 | if (loop == 0) { | |
cb8eaa8b | 997 | edge_port->chaseResponsePending = false; |
441b62c1 | 998 | dbg("%s - Chase TIMEOUT", __func__); |
1da177e4 LT |
999 | return; |
1000 | } | |
1001 | } else { | |
03f0dbf7 AC |
1002 | /* Reset timeout value back to 10 seconds */ |
1003 | dbg("%s - Last %d, Current %d", __func__, | |
1004 | lastCredits, edge_port->txCredits); | |
1da177e4 LT |
1005 | loop = 10; |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | ||
1011 | /************************************************************************ | |
1012 | * | |
1013 | * block_until_tx_empty | |
1014 | * | |
1015 | * This function will block the close until one of the following: | |
1016 | * 1. TX count are 0 | |
1017 | * 2. The edgeport has stopped | |
dc0d5c1e | 1018 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
1019 | * |
1020 | ************************************************************************/ | |
03f0dbf7 | 1021 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 LT |
1022 | { |
1023 | DEFINE_WAIT(wait); | |
1024 | struct TxFifo *fifo = &edge_port->txfifo; | |
1025 | __u32 lastCount; | |
1026 | int timeout = HZ/10; | |
1027 | int loop = 30; | |
1028 | ||
1029 | while (1) { | |
03f0dbf7 | 1030 | /* Save Last count */ |
1da177e4 LT |
1031 | lastCount = fifo->count; |
1032 | ||
03f0dbf7 | 1033 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1034 | if (lastCount == 0) { |
441b62c1 | 1035 | dbg("%s - TX Buffer Empty", __func__); |
1da177e4 LT |
1036 | return; |
1037 | } | |
1038 | ||
03f0dbf7 AC |
1039 | /* Block the thread for a while */ |
1040 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1041 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1042 | schedule_timeout(timeout); |
1043 | finish_wait(&edge_port->wait_chase, &wait); | |
1044 | ||
441b62c1 | 1045 | dbg("%s wait", __func__); |
1da177e4 LT |
1046 | |
1047 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1048 | /* No activity.. count down. */ |
1da177e4 LT |
1049 | loop--; |
1050 | if (loop == 0) { | |
441b62c1 | 1051 | dbg("%s - TIMEOUT", __func__); |
1da177e4 LT |
1052 | return; |
1053 | } | |
1054 | } else { | |
03f0dbf7 | 1055 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1056 | loop = 30; |
1057 | } | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | ||
1062 | /***************************************************************************** | |
1063 | * edge_close | |
1064 | * this function is called by the tty driver when a port is closed | |
1065 | *****************************************************************************/ | |
335f8514 | 1066 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1067 | { |
1068 | struct edgeport_serial *edge_serial; | |
1069 | struct edgeport_port *edge_port; | |
1070 | int status; | |
1071 | ||
441b62c1 | 1072 | dbg("%s - port %d", __func__, port->number); |
03f0dbf7 | 1073 | |
1da177e4 LT |
1074 | edge_serial = usb_get_serial_data(port->serial); |
1075 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1076 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1077 | return; |
03f0dbf7 AC |
1078 | |
1079 | /* block until tx is empty */ | |
1da177e4 LT |
1080 | block_until_tx_empty(edge_port); |
1081 | ||
cb8eaa8b | 1082 | edge_port->closePending = true; |
1da177e4 | 1083 | |
6e8cf775 GKH |
1084 | if ((!edge_serial->is_epic) || |
1085 | ((edge_serial->is_epic) && | |
1086 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1087 | /* flush and chase */ | |
cb8eaa8b | 1088 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1089 | |
441b62c1 | 1090 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
03f0dbf7 AC |
1091 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1092 | if (status == 0) | |
1093 | /* block until chase finished */ | |
6e8cf775 | 1094 | block_until_chase_response(edge_port); |
03f0dbf7 | 1095 | else |
cb8eaa8b | 1096 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1097 | } |
1098 | ||
6e8cf775 GKH |
1099 | if ((!edge_serial->is_epic) || |
1100 | ((edge_serial->is_epic) && | |
1101 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1102 | /* close the port */ | |
441b62c1 | 1103 | dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__); |
03f0dbf7 | 1104 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1105 | } |
1da177e4 | 1106 | |
03f0dbf7 | 1107 | /* port->close = true; */ |
cb8eaa8b RK |
1108 | edge_port->closePending = false; |
1109 | edge_port->open = false; | |
1110 | edge_port->openPending = false; | |
1da177e4 | 1111 | |
9a25f44f | 1112 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1113 | |
1114 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1115 | /* if this urb had a transfer buffer already |
1116 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1117 | kfree(edge_port->write_urb->transfer_buffer); |
1118 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1119 | edge_port->write_urb = NULL; |
1120 | } | |
1bc3c9e1 JJ |
1121 | kfree(edge_port->txfifo.fifo); |
1122 | edge_port->txfifo.fifo = NULL; | |
1da177e4 | 1123 | |
441b62c1 | 1124 | dbg("%s exited", __func__); |
03f0dbf7 | 1125 | } |
1da177e4 LT |
1126 | |
1127 | /***************************************************************************** | |
1128 | * SerialWrite | |
03f0dbf7 AC |
1129 | * this function is called by the tty driver when data should be written |
1130 | * to the port. | |
1131 | * If successful, we return the number of bytes written, otherwise we | |
1132 | * return a negative error number. | |
1da177e4 | 1133 | *****************************************************************************/ |
95da310e AC |
1134 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1135 | const unsigned char *data, int count) | |
1da177e4 LT |
1136 | { |
1137 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1138 | struct TxFifo *fifo; | |
1139 | int copySize; | |
1140 | int bytesleft; | |
1141 | int firsthalf; | |
1142 | int secondhalf; | |
1143 | unsigned long flags; | |
1144 | ||
441b62c1 | 1145 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1146 | |
1147 | if (edge_port == NULL) | |
1148 | return -ENODEV; | |
1149 | ||
03f0dbf7 | 1150 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1151 | fifo = &edge_port->txfifo; |
1152 | ||
1153 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1154 | ||
03f0dbf7 AC |
1155 | /* calculate number of bytes to put in fifo */ |
1156 | copySize = min((unsigned int)count, | |
1157 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1158 | |
03f0dbf7 AC |
1159 | dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", |
1160 | __func__, port->number, count, | |
1161 | edge_port->txCredits - fifo->count, copySize); | |
1da177e4 | 1162 | |
03f0dbf7 AC |
1163 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1164 | and when txCredits is empty */ | |
1da177e4 | 1165 | if (copySize == 0) { |
441b62c1 | 1166 | dbg("%s - copySize = Zero", __func__); |
1da177e4 LT |
1167 | goto finish_write; |
1168 | } | |
1169 | ||
03f0dbf7 AC |
1170 | /* queue the data |
1171 | * since we can never overflow the buffer we do not have to check for a | |
1172 | * full condition | |
1173 | * | |
1174 | * the copy is done is two parts -- first fill to the end of the buffer | |
1175 | * then copy the reset from the start of the buffer | |
1176 | */ | |
1da177e4 | 1177 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 AC |
1178 | firsthalf = min(bytesleft, copySize); |
1179 | dbg("%s - copy %d bytes of %d into fifo ", __func__, | |
1180 | firsthalf, bytesleft); | |
1da177e4 LT |
1181 | |
1182 | /* now copy our data */ | |
1183 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
03f0dbf7 AC |
1184 | usb_serial_debug_data(debug, &port->dev, __func__, |
1185 | firsthalf, &fifo->fifo[fifo->head]); | |
1da177e4 | 1186 | |
03f0dbf7 | 1187 | /* update the index and size */ |
1da177e4 LT |
1188 | fifo->head += firsthalf; |
1189 | fifo->count += firsthalf; | |
1190 | ||
03f0dbf7 AC |
1191 | /* wrap the index */ |
1192 | if (fifo->head == fifo->size) | |
1da177e4 | 1193 | fifo->head = 0; |
1da177e4 LT |
1194 | |
1195 | secondhalf = copySize-firsthalf; | |
1196 | ||
1197 | if (secondhalf) { | |
441b62c1 | 1198 | dbg("%s - copy rest of data %d", __func__, secondhalf); |
1da177e4 | 1199 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
03f0dbf7 AC |
1200 | usb_serial_debug_data(debug, &port->dev, __func__, |
1201 | secondhalf, &fifo->fifo[fifo->head]); | |
1202 | /* update the index and size */ | |
1da177e4 LT |
1203 | fifo->count += secondhalf; |
1204 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1205 | /* No need to check for wrap since we can not get to end of |
1206 | * the fifo in this part | |
1207 | */ | |
1da177e4 LT |
1208 | } |
1209 | ||
1210 | finish_write: | |
1211 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1212 | ||
03f0dbf7 AC |
1213 | send_more_port_data((struct edgeport_serial *) |
1214 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1215 | |
03f0dbf7 AC |
1216 | dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__, |
1217 | copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1218 | |
03f0dbf7 | 1219 | return copySize; |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | ||
1223 | /************************************************************************ | |
1224 | * | |
1225 | * send_more_port_data() | |
1226 | * | |
1227 | * This routine attempts to write additional UART transmit data | |
1228 | * to a port over the USB bulk pipe. It is called (1) when new | |
1229 | * data has been written to a port's TxBuffer from higher layers | |
1230 | * (2) when the peripheral sends us additional TxCredits indicating | |
1231 | * that it can accept more Tx data for a given port; and (3) when | |
1232 | * a bulk write completes successfully and we want to see if we | |
1233 | * can transmit more. | |
1234 | * | |
1235 | ************************************************************************/ | |
03f0dbf7 AC |
1236 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1237 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1238 | { |
1239 | struct TxFifo *fifo = &edge_port->txfifo; | |
1240 | struct urb *urb; | |
1241 | unsigned char *buffer; | |
1242 | int status; | |
1243 | int count; | |
1244 | int bytesleft; | |
1245 | int firsthalf; | |
1246 | int secondhalf; | |
1247 | unsigned long flags; | |
1248 | ||
441b62c1 | 1249 | dbg("%s(%d)", __func__, edge_port->port->number); |
1da177e4 LT |
1250 | |
1251 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1252 | ||
1253 | if (edge_port->write_in_progress || | |
1254 | !edge_port->open || | |
1255 | (fifo->count == 0)) { | |
03f0dbf7 AC |
1256 | dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", |
1257 | __func__, edge_port->port->number, | |
1258 | fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1259 | goto exit_send; |
1260 | } | |
1261 | ||
03f0dbf7 AC |
1262 | /* since the amount of data in the fifo will always fit into the |
1263 | * edgeport buffer we do not need to check the write length | |
1264 | * | |
1265 | * Do we have enough credits for this port to make it worthwhile | |
1266 | * to bother queueing a write. If it's too small, say a few bytes, | |
1267 | * it's better to wait for more credits so we can do a larger write. | |
1268 | */ | |
1269 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
1270 | dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", | |
1271 | __func__, edge_port->port->number, fifo->count, | |
1272 | edge_port->txCredits); | |
1da177e4 LT |
1273 | goto exit_send; |
1274 | } | |
1275 | ||
03f0dbf7 | 1276 | /* lock this write */ |
cb8eaa8b | 1277 | edge_port->write_in_progress = true; |
1da177e4 | 1278 | |
03f0dbf7 | 1279 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1280 | urb = edge_port->write_urb; |
1281 | ||
1bc3c9e1 JJ |
1282 | /* make sure transfer buffer is freed */ |
1283 | kfree(urb->transfer_buffer); | |
1284 | urb->transfer_buffer = NULL; | |
1da177e4 | 1285 | |
03f0dbf7 AC |
1286 | /* build the data header for the buffer and port that we are about |
1287 | to send out */ | |
1da177e4 | 1288 | count = fifo->count; |
03f0dbf7 | 1289 | buffer = kmalloc(count+2, GFP_ATOMIC); |
1da177e4 | 1290 | if (buffer == NULL) { |
03f0dbf7 AC |
1291 | dev_err(&edge_port->port->dev, |
1292 | "%s - no more kernel memory...\n", __func__); | |
cb8eaa8b | 1293 | edge_port->write_in_progress = false; |
1da177e4 LT |
1294 | goto exit_send; |
1295 | } | |
03f0dbf7 AC |
1296 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number |
1297 | - edge_port->port->serial->minor, count); | |
1298 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number | |
1299 | - edge_port->port->serial->minor, count); | |
1da177e4 LT |
1300 | |
1301 | /* now copy our data */ | |
1302 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1303 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1304 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1305 | fifo->tail += firsthalf; | |
1306 | fifo->count -= firsthalf; | |
03f0dbf7 | 1307 | if (fifo->tail == fifo->size) |
1da177e4 | 1308 | fifo->tail = 0; |
1da177e4 LT |
1309 | |
1310 | secondhalf = count-firsthalf; | |
1311 | if (secondhalf) { | |
03f0dbf7 AC |
1312 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1313 | secondhalf); | |
1da177e4 LT |
1314 | fifo->tail += secondhalf; |
1315 | fifo->count -= secondhalf; | |
1316 | } | |
1317 | ||
1318 | if (count) | |
03f0dbf7 AC |
1319 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1320 | __func__, count, &buffer[2]); | |
1da177e4 LT |
1321 | |
1322 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1323 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1324 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1325 | edge_serial->bulk_out_endpoint), | |
1326 | buffer, count+2, | |
1327 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1328 | |
1329 | /* decrement the number of credits we have by the number we just sent */ | |
1330 | edge_port->txCredits -= count; | |
1331 | edge_port->icount.tx += count; | |
1332 | ||
1333 | urb->dev = edge_serial->serial->dev; | |
1334 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1335 | if (status) { | |
1336 | /* something went wrong */ | |
03f0dbf7 AC |
1337 | dev_err(&edge_port->port->dev, |
1338 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", | |
1339 | __func__, status); | |
cb8eaa8b | 1340 | edge_port->write_in_progress = false; |
1da177e4 LT |
1341 | |
1342 | /* revert the credits as something bad happened. */ | |
1343 | edge_port->txCredits += count; | |
1344 | edge_port->icount.tx -= count; | |
1345 | } | |
03f0dbf7 AC |
1346 | dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", |
1347 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1348 | |
1349 | exit_send: | |
1350 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1351 | } | |
1352 | ||
1353 | ||
1354 | /***************************************************************************** | |
1355 | * edge_write_room | |
03f0dbf7 AC |
1356 | * this function is called by the tty driver when it wants to know how |
1357 | * many bytes of data we can accept for a specific port. If successful, | |
1358 | * we return the amount of room that we have for this port (the txCredits) | |
1359 | * otherwise we return a negative error number. | |
1da177e4 | 1360 | *****************************************************************************/ |
95da310e | 1361 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1362 | { |
95da310e | 1363 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1364 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1365 | int room; | |
1366 | unsigned long flags; | |
1367 | ||
441b62c1 | 1368 | dbg("%s", __func__); |
1da177e4 LT |
1369 | |
1370 | if (edge_port == NULL) | |
d76f2f44 | 1371 | return 0; |
cb8eaa8b | 1372 | if (edge_port->closePending) |
d76f2f44 | 1373 | return 0; |
1da177e4 | 1374 | |
441b62c1 | 1375 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1376 | |
1377 | if (!edge_port->open) { | |
441b62c1 | 1378 | dbg("%s - port not opened", __func__); |
d76f2f44 | 1379 | return 0; |
1da177e4 LT |
1380 | } |
1381 | ||
03f0dbf7 | 1382 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1383 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1384 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1385 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1386 | ||
441b62c1 | 1387 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
1388 | return room; |
1389 | } | |
1390 | ||
1391 | ||
1392 | /***************************************************************************** | |
1393 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1394 | * this function is called by the tty driver when it wants to know how |
1395 | * many bytes of data we currently have outstanding in the port (data that | |
1396 | * has been written, but hasn't made it out the port yet) | |
1397 | * If successful, we return the number of bytes left to be written in the | |
1398 | * system, | |
1da177e4 LT |
1399 | * Otherwise we return a negative error number. |
1400 | *****************************************************************************/ | |
95da310e | 1401 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1402 | { |
95da310e | 1403 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1404 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1405 | int num_chars; | |
1406 | unsigned long flags; | |
1407 | ||
441b62c1 | 1408 | dbg("%s", __func__); |
1da177e4 LT |
1409 | |
1410 | if (edge_port == NULL) | |
d76f2f44 | 1411 | return 0; |
cb8eaa8b | 1412 | if (edge_port->closePending) |
d76f2f44 | 1413 | return 0; |
1da177e4 LT |
1414 | |
1415 | if (!edge_port->open) { | |
441b62c1 | 1416 | dbg("%s - port not opened", __func__); |
d76f2f44 | 1417 | return 0; |
1da177e4 LT |
1418 | } |
1419 | ||
1420 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1421 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1422 | edge_port->txfifo.count; | |
1da177e4 LT |
1423 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1424 | if (num_chars) { | |
03f0dbf7 AC |
1425 | dbg("%s(port %d) - returns %d", __func__, |
1426 | port->number, num_chars); | |
1da177e4 LT |
1427 | } |
1428 | ||
1429 | return num_chars; | |
1430 | } | |
1431 | ||
1432 | ||
1433 | /***************************************************************************** | |
1434 | * SerialThrottle | |
1435 | * this function is called by the tty driver when it wants to stop the data | |
1436 | * being read from the port. | |
1437 | *****************************************************************************/ | |
95da310e | 1438 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1439 | { |
95da310e | 1440 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1441 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1442 | int status; |
1443 | ||
441b62c1 | 1444 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1445 | |
1446 | if (edge_port == NULL) | |
1447 | return; | |
1448 | ||
1449 | if (!edge_port->open) { | |
441b62c1 | 1450 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1451 | return; |
1452 | } | |
1453 | ||
1da177e4 LT |
1454 | /* if we are implementing XON/XOFF, send the stop character */ |
1455 | if (I_IXOFF(tty)) { | |
1456 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1457 | status = edge_write(tty, port, &stop_char, 1); |
1458 | if (status <= 0) | |
1da177e4 | 1459 | return; |
1da177e4 LT |
1460 | } |
1461 | ||
1462 | /* if we are implementing RTS/CTS, toggle that line */ | |
1463 | if (tty->termios->c_cflag & CRTSCTS) { | |
1464 | edge_port->shadowMCR &= ~MCR_RTS; | |
03f0dbf7 AC |
1465 | status = send_cmd_write_uart_register(edge_port, MCR, |
1466 | edge_port->shadowMCR); | |
1467 | if (status != 0) | |
1da177e4 | 1468 | return; |
1da177e4 | 1469 | } |
1da177e4 LT |
1470 | } |
1471 | ||
1472 | ||
1473 | /***************************************************************************** | |
1474 | * edge_unthrottle | |
03f0dbf7 AC |
1475 | * this function is called by the tty driver when it wants to resume the |
1476 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1477 | *****************************************************************************/ |
95da310e | 1478 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1479 | { |
95da310e | 1480 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1481 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1482 | int status; |
1483 | ||
441b62c1 | 1484 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1485 | |
1486 | if (edge_port == NULL) | |
1487 | return; | |
1488 | ||
1489 | if (!edge_port->open) { | |
441b62c1 | 1490 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1491 | return; |
1492 | } | |
1493 | ||
1da177e4 LT |
1494 | /* if we are implementing XON/XOFF, send the start character */ |
1495 | if (I_IXOFF(tty)) { | |
1496 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1497 | status = edge_write(tty, port, &start_char, 1); |
1498 | if (status <= 0) | |
1da177e4 | 1499 | return; |
1da177e4 | 1500 | } |
1da177e4 LT |
1501 | /* if we are implementing RTS/CTS, toggle that line */ |
1502 | if (tty->termios->c_cflag & CRTSCTS) { | |
1503 | edge_port->shadowMCR |= MCR_RTS; | |
03f0dbf7 AC |
1504 | send_cmd_write_uart_register(edge_port, MCR, |
1505 | edge_port->shadowMCR); | |
1da177e4 | 1506 | } |
1da177e4 LT |
1507 | } |
1508 | ||
1509 | ||
1510 | /***************************************************************************** | |
1511 | * SerialSetTermios | |
03f0dbf7 AC |
1512 | * this function is called by the tty driver when it wants to change |
1513 | * the termios structure | |
1da177e4 | 1514 | *****************************************************************************/ |
95da310e AC |
1515 | static void edge_set_termios(struct tty_struct *tty, |
1516 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1517 | { |
1518 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1519 | unsigned int cflag; |
1520 | ||
1da177e4 | 1521 | cflag = tty->termios->c_cflag; |
441b62c1 | 1522 | dbg("%s - clfag %08x iflag %08x", __func__, |
1da177e4 | 1523 | tty->termios->c_cflag, tty->termios->c_iflag); |
441b62c1 | 1524 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
6ce073bd | 1525 | old_termios->c_cflag, old_termios->c_iflag); |
1da177e4 | 1526 | |
441b62c1 | 1527 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1528 | |
1529 | if (edge_port == NULL) | |
1530 | return; | |
1531 | ||
1532 | if (!edge_port->open) { | |
441b62c1 | 1533 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1534 | return; |
1535 | } | |
1536 | ||
1537 | /* change the port settings to the new ones specified */ | |
95da310e | 1538 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1539 | } |
1540 | ||
1541 | ||
1542 | /***************************************************************************** | |
1543 | * get_lsr_info - get line status register info | |
1544 | * | |
1545 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1546 | * is emptied. On bus types like RS485, the transmitter must | |
1547 | * release the bus after transmitting. This must be done when | |
1548 | * the transmit shift register is empty, not be done when the | |
1549 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1550 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1551 | *****************************************************************************/ |
03f0dbf7 AC |
1552 | static int get_lsr_info(struct edgeport_port *edge_port, |
1553 | unsigned int __user *value) | |
1da177e4 LT |
1554 | { |
1555 | unsigned int result = 0; | |
1556 | unsigned long flags; | |
1557 | ||
1558 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1559 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1560 | edge_port->txfifo.count == 0) { | |
441b62c1 | 1561 | dbg("%s -- Empty", __func__); |
1da177e4 LT |
1562 | result = TIOCSER_TEMT; |
1563 | } | |
1564 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1565 | ||
1566 | if (copy_to_user(value, &result, sizeof(int))) | |
1567 | return -EFAULT; | |
1568 | return 0; | |
1569 | } | |
1570 | ||
20b9d177 | 1571 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 1572 | unsigned int set, unsigned int clear) |
1da177e4 | 1573 | { |
95da310e | 1574 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1575 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1576 | unsigned int mcr; | |
1577 | ||
441b62c1 | 1578 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1579 | |
1580 | mcr = edge_port->shadowMCR; | |
1581 | if (set & TIOCM_RTS) | |
1582 | mcr |= MCR_RTS; | |
1583 | if (set & TIOCM_DTR) | |
1584 | mcr |= MCR_DTR; | |
1585 | if (set & TIOCM_LOOP) | |
1586 | mcr |= MCR_LOOPBACK; | |
1587 | ||
1588 | if (clear & TIOCM_RTS) | |
1589 | mcr &= ~MCR_RTS; | |
1590 | if (clear & TIOCM_DTR) | |
1591 | mcr &= ~MCR_DTR; | |
1592 | if (clear & TIOCM_LOOP) | |
1593 | mcr &= ~MCR_LOOPBACK; | |
1594 | ||
1595 | edge_port->shadowMCR = mcr; | |
1596 | ||
1597 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1598 | ||
1599 | return 0; | |
1600 | } | |
1601 | ||
60b33c13 | 1602 | static int edge_tiocmget(struct tty_struct *tty) |
1da177e4 | 1603 | { |
95da310e | 1604 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1605 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1606 | unsigned int result = 0; | |
1607 | unsigned int msr; | |
1608 | unsigned int mcr; | |
1609 | ||
441b62c1 | 1610 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1611 | |
1612 | msr = edge_port->shadowMSR; | |
1613 | mcr = edge_port->shadowMCR; | |
1614 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1615 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1616 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1617 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1618 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1619 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1620 | ||
1621 | ||
441b62c1 | 1622 | dbg("%s -- %x", __func__, result); |
1da177e4 LT |
1623 | |
1624 | return result; | |
1625 | } | |
1626 | ||
0bca1b91 AC |
1627 | static int edge_get_icount(struct tty_struct *tty, |
1628 | struct serial_icounter_struct *icount) | |
1629 | { | |
1630 | struct usb_serial_port *port = tty->driver_data; | |
1631 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1632 | struct async_icount cnow; | |
1633 | cnow = edge_port->icount; | |
1634 | ||
1635 | icount->cts = cnow.cts; | |
1636 | icount->dsr = cnow.dsr; | |
1637 | icount->rng = cnow.rng; | |
1638 | icount->dcd = cnow.dcd; | |
1639 | icount->rx = cnow.rx; | |
1640 | icount->tx = cnow.tx; | |
1641 | icount->frame = cnow.frame; | |
1642 | icount->overrun = cnow.overrun; | |
1643 | icount->parity = cnow.parity; | |
1644 | icount->brk = cnow.brk; | |
1645 | icount->buf_overrun = cnow.buf_overrun; | |
1646 | ||
1647 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", | |
1648 | __func__, port->number, icount->rx, icount->tx); | |
1649 | return 0; | |
1650 | } | |
1651 | ||
03f0dbf7 AC |
1652 | static int get_serial_info(struct edgeport_port *edge_port, |
1653 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1654 | { |
1655 | struct serial_struct tmp; | |
1656 | ||
1657 | if (!retinfo) | |
1658 | return -EFAULT; | |
1659 | ||
1660 | memset(&tmp, 0, sizeof(tmp)); | |
1661 | ||
1662 | tmp.type = PORT_16550A; | |
1663 | tmp.line = edge_port->port->serial->minor; | |
1664 | tmp.port = edge_port->port->number; | |
1665 | tmp.irq = 0; | |
1666 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1667 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1668 | tmp.baud_base = 9600; | |
1669 | tmp.close_delay = 5*HZ; | |
1670 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1671 | |
1672 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1673 | return -EFAULT; | |
1674 | return 0; | |
1675 | } | |
1676 | ||
1677 | ||
1da177e4 LT |
1678 | /***************************************************************************** |
1679 | * SerialIoctl | |
1680 | * this function handles any ioctl calls to the driver | |
1681 | *****************************************************************************/ | |
00a0d0d6 | 1682 | static int edge_ioctl(struct tty_struct *tty, |
95da310e | 1683 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1684 | { |
95da310e | 1685 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1686 | DEFINE_WAIT(wait); |
1687 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1688 | struct async_icount cnow; | |
1689 | struct async_icount cprev; | |
1da177e4 | 1690 | |
441b62c1 | 1691 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
1692 | |
1693 | switch (cmd) { | |
03f0dbf7 AC |
1694 | case TIOCSERGETLSR: |
1695 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); | |
1696 | return get_lsr_info(edge_port, (unsigned int __user *) arg); | |
1697 | ||
1698 | case TIOCGSERIAL: | |
1699 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); | |
1700 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); | |
1701 | ||
1702 | case TIOCMIWAIT: | |
1703 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
1704 | cprev = edge_port->icount; | |
1705 | while (1) { | |
1706 | prepare_to_wait(&edge_port->delta_msr_wait, | |
1707 | &wait, TASK_INTERRUPTIBLE); | |
1708 | schedule(); | |
1709 | finish_wait(&edge_port->delta_msr_wait, &wait); | |
1710 | /* see if a signal did it */ | |
1711 | if (signal_pending(current)) | |
1712 | return -ERESTARTSYS; | |
1713 | cnow = edge_port->icount; | |
1714 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1715 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1716 | return -EIO; /* no change => error */ | |
1717 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1718 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1719 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1720 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
1721 | return 0; | |
1da177e4 | 1722 | } |
03f0dbf7 AC |
1723 | cprev = cnow; |
1724 | } | |
1725 | /* NOTREACHED */ | |
1726 | break; | |
1da177e4 | 1727 | |
1da177e4 | 1728 | } |
1da177e4 LT |
1729 | return -ENOIOCTLCMD; |
1730 | } | |
1731 | ||
1732 | ||
1733 | /***************************************************************************** | |
1734 | * SerialBreak | |
1735 | * this function sends a break to the port | |
1736 | *****************************************************************************/ | |
03f0dbf7 | 1737 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1738 | { |
95da310e | 1739 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1740 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1741 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1742 | int status; |
1743 | ||
6e8cf775 GKH |
1744 | if ((!edge_serial->is_epic) || |
1745 | ((edge_serial->is_epic) && | |
1746 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1747 | /* flush and chase */ | |
cb8eaa8b | 1748 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1749 | |
441b62c1 | 1750 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
03f0dbf7 | 1751 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1752 | if (status == 0) { |
03f0dbf7 | 1753 | /* block until chase finished */ |
6e8cf775 GKH |
1754 | block_until_chase_response(edge_port); |
1755 | } else { | |
cb8eaa8b | 1756 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1757 | } |
1da177e4 LT |
1758 | } |
1759 | ||
6e8cf775 GKH |
1760 | if ((!edge_serial->is_epic) || |
1761 | ((edge_serial->is_epic) && | |
1762 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1763 | if (break_state == -1) { | |
441b62c1 | 1764 | dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__); |
03f0dbf7 AC |
1765 | status = send_iosp_ext_cmd(edge_port, |
1766 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1767 | } else { |
441b62c1 | 1768 | dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__); |
03f0dbf7 AC |
1769 | status = send_iosp_ext_cmd(edge_port, |
1770 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1771 | } |
03f0dbf7 AC |
1772 | if (status) |
1773 | dbg("%s - error sending break set/clear command.", | |
1774 | __func__); | |
1da177e4 | 1775 | } |
1da177e4 LT |
1776 | } |
1777 | ||
1778 | ||
1779 | /***************************************************************************** | |
1780 | * process_rcvd_data | |
1781 | * this function handles the data received on the bulk in pipe. | |
1782 | *****************************************************************************/ | |
03f0dbf7 AC |
1783 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1784 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 LT |
1785 | { |
1786 | struct usb_serial_port *port; | |
1787 | struct edgeport_port *edge_port; | |
1788 | struct tty_struct *tty; | |
1789 | __u16 lastBufferLength; | |
1790 | __u16 rxLen; | |
1791 | ||
441b62c1 | 1792 | dbg("%s", __func__); |
1da177e4 LT |
1793 | |
1794 | lastBufferLength = bufferLength + 1; | |
1795 | ||
1796 | while (bufferLength > 0) { | |
1797 | /* failsafe incase we get a message that we don't understand */ | |
1798 | if (lastBufferLength == bufferLength) { | |
441b62c1 | 1799 | dbg("%s - stuck in loop, exiting it.", __func__); |
1da177e4 LT |
1800 | break; |
1801 | } | |
1802 | lastBufferLength = bufferLength; | |
1803 | ||
1804 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1805 | case EXPECT_HDR1: |
1806 | edge_serial->rxHeader1 = *buffer; | |
1807 | ++buffer; | |
1808 | --bufferLength; | |
1da177e4 | 1809 | |
03f0dbf7 AC |
1810 | if (bufferLength == 0) { |
1811 | edge_serial->rxState = EXPECT_HDR2; | |
1812 | break; | |
1813 | } | |
1814 | /* otherwise, drop on through */ | |
1815 | case EXPECT_HDR2: | |
1816 | edge_serial->rxHeader2 = *buffer; | |
1817 | ++buffer; | |
1818 | --bufferLength; | |
1819 | ||
1820 | dbg("%s - Hdr1=%02X Hdr2=%02X", __func__, | |
1821 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
1822 | /* Process depending on whether this header is | |
1823 | * data or status */ | |
1824 | ||
1825 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1826 | /* Decode this status header and go to | |
1827 | * EXPECT_HDR1 (if we can process the status | |
1828 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1829 | * get the third byte. */ | |
1830 | edge_serial->rxPort = | |
1831 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1832 | edge_serial->rxStatusCode = | |
1833 | IOSP_GET_STATUS_CODE( | |
1834 | edge_serial->rxHeader1); | |
1835 | ||
1836 | if (!IOSP_STATUS_IS_2BYTE( | |
1837 | edge_serial->rxStatusCode)) { | |
1838 | /* This status needs additional bytes. | |
1839 | * Save what we have and then wait for | |
1840 | * more data. | |
1841 | */ | |
1842 | edge_serial->rxStatusParam | |
1843 | = edge_serial->rxHeader2; | |
1844 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1845 | break; |
1846 | } | |
03f0dbf7 AC |
1847 | /* We have all the header bytes, process the |
1848 | status now */ | |
1849 | process_rcvd_status(edge_serial, | |
1850 | edge_serial->rxHeader2, 0); | |
1851 | edge_serial->rxState = EXPECT_HDR1; | |
1852 | break; | |
1853 | } else { | |
1854 | edge_serial->rxPort = | |
1855 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1856 | edge_serial->rxBytesRemaining = | |
1857 | IOSP_GET_HDR_DATA_LEN( | |
1858 | edge_serial->rxHeader1, | |
1859 | edge_serial->rxHeader2); | |
1860 | dbg("%s - Data for Port %u Len %u", | |
1861 | __func__, | |
1862 | edge_serial->rxPort, | |
1863 | edge_serial->rxBytesRemaining); | |
1864 | ||
1865 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1866 | * ASSERT(DevExt->RxBytesRemaining < | |
1867 | * IOSP_MAX_DATA_LENGTH); | |
1868 | */ | |
1da177e4 | 1869 | |
03f0dbf7 AC |
1870 | if (bufferLength == 0) { |
1871 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1872 | break; |
1da177e4 | 1873 | } |
03f0dbf7 AC |
1874 | /* Else, drop through */ |
1875 | } | |
1876 | case EXPECT_DATA: /* Expect data */ | |
1877 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1878 | rxLen = bufferLength; | |
1879 | /* Expect data to start next buffer */ | |
1880 | edge_serial->rxState = EXPECT_DATA; | |
1881 | } else { | |
1882 | /* BufLen >= RxBytesRemaining */ | |
1883 | rxLen = edge_serial->rxBytesRemaining; | |
1884 | /* Start another header next time */ | |
1885 | edge_serial->rxState = EXPECT_HDR1; | |
1886 | } | |
1da177e4 | 1887 | |
03f0dbf7 AC |
1888 | bufferLength -= rxLen; |
1889 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1890 | |
03f0dbf7 AC |
1891 | /* spit this data back into the tty driver if this |
1892 | port is open */ | |
1893 | if (rxLen) { | |
1894 | port = edge_serial->serial->port[ | |
1895 | edge_serial->rxPort]; | |
1896 | edge_port = usb_get_serial_port_data(port); | |
1897 | if (edge_port->open) { | |
4a90f09b AC |
1898 | tty = tty_port_tty_get( |
1899 | &edge_port->port->port); | |
03f0dbf7 AC |
1900 | if (tty) { |
1901 | dbg("%s - Sending %d bytes to TTY for port %d", | |
1902 | __func__, rxLen, edge_serial->rxPort); | |
1903 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); | |
4a90f09b | 1904 | tty_kref_put(tty); |
1da177e4 | 1905 | } |
03f0dbf7 | 1906 | edge_port->icount.rx += rxLen; |
1da177e4 | 1907 | } |
03f0dbf7 AC |
1908 | buffer += rxLen; |
1909 | } | |
1910 | break; | |
1da177e4 | 1911 | |
03f0dbf7 AC |
1912 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1913 | edge_serial->rxHeader3 = *buffer; | |
1914 | ++buffer; | |
1915 | --bufferLength; | |
1916 | ||
1917 | /* We have all the header bytes, process the | |
1918 | status now */ | |
1919 | process_rcvd_status(edge_serial, | |
1920 | edge_serial->rxStatusParam, | |
1921 | edge_serial->rxHeader3); | |
1922 | edge_serial->rxState = EXPECT_HDR1; | |
1923 | break; | |
1da177e4 LT |
1924 | } |
1925 | } | |
1926 | } | |
1927 | ||
1928 | ||
1929 | /***************************************************************************** | |
1930 | * process_rcvd_status | |
03f0dbf7 AC |
1931 | * this function handles the any status messages received on the |
1932 | * bulk in pipe. | |
1da177e4 | 1933 | *****************************************************************************/ |
03f0dbf7 AC |
1934 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1935 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1936 | { |
1937 | struct usb_serial_port *port; | |
1938 | struct edgeport_port *edge_port; | |
4a90f09b | 1939 | struct tty_struct *tty; |
1da177e4 LT |
1940 | __u8 code = edge_serial->rxStatusCode; |
1941 | ||
1942 | /* switch the port pointer to the one being currently talked about */ | |
1943 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1944 | edge_port = usb_get_serial_port_data(port); | |
1945 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1946 | dev_err(&edge_serial->serial->dev->dev, |
1947 | "%s - edge_port == NULL for port %d\n", | |
1948 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1949 | return; |
1950 | } | |
1951 | ||
441b62c1 | 1952 | dbg("%s - port %d", __func__, edge_serial->rxPort); |
1da177e4 LT |
1953 | |
1954 | if (code == IOSP_EXT_STATUS) { | |
1955 | switch (byte2) { | |
03f0dbf7 AC |
1956 | case IOSP_EXT_STATUS_CHASE_RSP: |
1957 | /* we want to do EXT status regardless of port | |
1958 | * open/closed */ | |
1959 | dbg("%s - Port %u EXT CHASE_RSP Data = %02x", | |
1960 | __func__, edge_serial->rxPort, byte3); | |
1961 | /* Currently, the only EXT_STATUS is Chase, so process | |
1962 | * here instead of one more call to one more subroutine | |
1963 | * If/when more EXT_STATUS, there'll be more work to do | |
1964 | * Also, we currently clear flag and close the port | |
1965 | * regardless of content of above's Byte3. | |
1966 | * We could choose to do something else when Byte3 says | |
1967 | * Timeout on Chase from Edgeport, like wait longer in | |
1968 | * block_until_chase_response, but for now we don't. | |
1969 | */ | |
1970 | edge_port->chaseResponsePending = false; | |
1971 | wake_up(&edge_port->wait_chase); | |
1972 | return; | |
1da177e4 | 1973 | |
03f0dbf7 | 1974 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
759f3634 | 1975 | dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============", __func__, edge_serial->rxPort, byte3); |
03f0dbf7 AC |
1976 | /* Port->RxCheckRsp = true; */ |
1977 | return; | |
1da177e4 LT |
1978 | } |
1979 | } | |
1980 | ||
1981 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1982 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1983 | edge_port->maxTxCredits = edge_port->txCredits; | |
25985edc | 1984 | dbg("%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits); |
03f0dbf7 | 1985 | handle_new_msr(edge_port, byte2); |
1da177e4 | 1986 | |
03f0dbf7 AC |
1987 | /* send the current line settings to the port so we are |
1988 | in sync with any further termios calls */ | |
4a90f09b AC |
1989 | tty = tty_port_tty_get(&edge_port->port->port); |
1990 | if (tty) { | |
1991 | change_port_settings(tty, | |
1992 | edge_port, tty->termios); | |
1993 | tty_kref_put(tty); | |
1994 | } | |
1da177e4 LT |
1995 | |
1996 | /* we have completed the open */ | |
cb8eaa8b RK |
1997 | edge_port->openPending = false; |
1998 | edge_port->open = true; | |
1da177e4 LT |
1999 | wake_up(&edge_port->wait_open); |
2000 | return; | |
2001 | } | |
2002 | ||
03f0dbf7 AC |
2003 | /* If port is closed, silently discard all rcvd status. We can |
2004 | * have cases where buffered status is received AFTER the close | |
2005 | * port command is sent to the Edgeport. | |
2006 | */ | |
2007 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 2008 | return; |
1da177e4 LT |
2009 | |
2010 | switch (code) { | |
03f0dbf7 AC |
2011 | /* Not currently sent by Edgeport */ |
2012 | case IOSP_STATUS_LSR: | |
2013 | dbg("%s - Port %u LSR Status = %02x", | |
2014 | __func__, edge_serial->rxPort, byte2); | |
2015 | handle_new_lsr(edge_port, false, byte2, 0); | |
2016 | break; | |
1da177e4 | 2017 | |
03f0dbf7 AC |
2018 | case IOSP_STATUS_LSR_DATA: |
2019 | dbg("%s - Port %u LSR Status = %02x, Data = %02x", | |
2020 | __func__, edge_serial->rxPort, byte2, byte3); | |
2021 | /* byte2 is LSR Register */ | |
2022 | /* byte3 is broken data byte */ | |
2023 | handle_new_lsr(edge_port, true, byte2, byte3); | |
2024 | break; | |
2025 | /* | |
2026 | * case IOSP_EXT_4_STATUS: | |
2027 | * dbg("%s - Port %u LSR Status = %02x Data = %02x", | |
2028 | * __func__, edge_serial->rxPort, byte2, byte3); | |
2029 | * break; | |
2030 | */ | |
2031 | case IOSP_STATUS_MSR: | |
2032 | dbg("%s - Port %u MSR Status = %02x", | |
2033 | __func__, edge_serial->rxPort, byte2); | |
2034 | /* | |
2035 | * Process this new modem status and generate appropriate | |
2036 | * events, etc, based on the new status. This routine | |
2037 | * also saves the MSR in Port->ShadowMsr. | |
2038 | */ | |
2039 | handle_new_msr(edge_port, byte2); | |
2040 | break; | |
1da177e4 | 2041 | |
03f0dbf7 | 2042 | default: |
759f3634 | 2043 | dbg("%s - Unrecognized IOSP status code %u", __func__, code); |
03f0dbf7 | 2044 | break; |
1da177e4 | 2045 | } |
1da177e4 LT |
2046 | } |
2047 | ||
2048 | ||
2049 | /***************************************************************************** | |
2050 | * edge_tty_recv | |
2051 | * this function passes data on to the tty flip buffer | |
2052 | *****************************************************************************/ | |
03f0dbf7 AC |
2053 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
2054 | unsigned char *data, int length) | |
1da177e4 LT |
2055 | { |
2056 | int cnt; | |
2057 | ||
a108bfcb AC |
2058 | cnt = tty_insert_flip_string(tty, data, length); |
2059 | if (cnt < length) { | |
2060 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
2061 | __func__, length - cnt); | |
2062 | } | |
2063 | data += cnt; | |
2064 | length -= cnt; | |
1da177e4 LT |
2065 | |
2066 | tty_flip_buffer_push(tty); | |
2067 | } | |
2068 | ||
2069 | ||
2070 | /***************************************************************************** | |
2071 | * handle_new_msr | |
2072 | * this function handles any change to the msr register for a port. | |
2073 | *****************************************************************************/ | |
2074 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2075 | { | |
2076 | struct async_icount *icount; | |
2077 | ||
441b62c1 | 2078 | dbg("%s %02x", __func__, newMsr); |
1da177e4 | 2079 | |
03f0dbf7 AC |
2080 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
2081 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
2082 | icount = &edge_port->icount; |
2083 | ||
2084 | /* update input line counters */ | |
03f0dbf7 | 2085 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 2086 | icount->cts++; |
03f0dbf7 | 2087 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 2088 | icount->dsr++; |
03f0dbf7 | 2089 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 2090 | icount->dcd++; |
03f0dbf7 | 2091 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 2092 | icount->rng++; |
1da177e4 LT |
2093 | wake_up_interruptible(&edge_port->delta_msr_wait); |
2094 | } | |
2095 | ||
2096 | /* Save the new modem status */ | |
2097 | edge_port->shadowMSR = newMsr & 0xf0; | |
1da177e4 LT |
2098 | } |
2099 | ||
2100 | ||
2101 | /***************************************************************************** | |
2102 | * handle_new_lsr | |
2103 | * this function handles any change to the lsr register for a port. | |
2104 | *****************************************************************************/ | |
03f0dbf7 AC |
2105 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
2106 | __u8 lsr, __u8 data) | |
1da177e4 | 2107 | { |
03f0dbf7 AC |
2108 | __u8 newLsr = (__u8) (lsr & (__u8) |
2109 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2110 | struct async_icount *icount; | |
1da177e4 | 2111 | |
441b62c1 | 2112 | dbg("%s - %02x", __func__, newLsr); |
1da177e4 LT |
2113 | |
2114 | edge_port->shadowLSR = lsr; | |
2115 | ||
2116 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
2117 | /* |
2118 | * Parity and Framing errors only count if they | |
2119 | * occur exclusive of a break being | |
2120 | * received. | |
2121 | */ | |
1da177e4 LT |
2122 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
2123 | } | |
2124 | ||
2125 | /* Place LSR data byte into Rx buffer */ | |
4a90f09b AC |
2126 | if (lsrData) { |
2127 | struct tty_struct *tty = | |
2128 | tty_port_tty_get(&edge_port->port->port); | |
2129 | if (tty) { | |
2130 | edge_tty_recv(&edge_port->port->dev, tty, &data, 1); | |
2131 | tty_kref_put(tty); | |
2132 | } | |
2133 | } | |
1da177e4 LT |
2134 | /* update input line counters */ |
2135 | icount = &edge_port->icount; | |
03f0dbf7 | 2136 | if (newLsr & LSR_BREAK) |
1da177e4 | 2137 | icount->brk++; |
03f0dbf7 | 2138 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 2139 | icount->overrun++; |
03f0dbf7 | 2140 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 2141 | icount->parity++; |
03f0dbf7 | 2142 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 2143 | icount->frame++; |
1da177e4 LT |
2144 | } |
2145 | ||
2146 | ||
2147 | /**************************************************************************** | |
2148 | * sram_write | |
03f0dbf7 | 2149 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2150 | * given address. |
2151 | * If successful returns the number of bytes written, otherwise it returns | |
2152 | * a negative error number of the problem. | |
2153 | ****************************************************************************/ | |
03f0dbf7 AC |
2154 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2155 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2156 | { |
2157 | int result; | |
2158 | __u16 current_length; | |
2159 | unsigned char *transfer_buffer; | |
2160 | ||
441b62c1 | 2161 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 | 2162 | |
03f0dbf7 | 2163 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2164 | if (!transfer_buffer) { |
03f0dbf7 AC |
2165 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2166 | __func__, 64); | |
1da177e4 LT |
2167 | return -ENOMEM; |
2168 | } | |
2169 | ||
2170 | /* need to split these writes up into 64 byte chunks */ | |
2171 | result = 0; | |
2172 | while (length > 0) { | |
03f0dbf7 | 2173 | if (length > 64) |
1da177e4 | 2174 | current_length = 64; |
03f0dbf7 | 2175 | else |
1da177e4 | 2176 | current_length = length; |
03f0dbf7 AC |
2177 | |
2178 | /* dbg("%s - writing %x, %x, %d", __func__, | |
2179 | extAddr, addr, current_length); */ | |
2180 | memcpy(transfer_buffer, data, current_length); | |
2181 | result = usb_control_msg(serial->dev, | |
2182 | usb_sndctrlpipe(serial->dev, 0), | |
2183 | USB_REQUEST_ION_WRITE_RAM, | |
2184 | 0x40, addr, extAddr, transfer_buffer, | |
2185 | current_length, 300); | |
1da177e4 LT |
2186 | if (result < 0) |
2187 | break; | |
2188 | length -= current_length; | |
2189 | addr += current_length; | |
2190 | data += current_length; | |
03f0dbf7 | 2191 | } |
1da177e4 | 2192 | |
03f0dbf7 | 2193 | kfree(transfer_buffer); |
1da177e4 LT |
2194 | return result; |
2195 | } | |
2196 | ||
2197 | ||
2198 | /**************************************************************************** | |
2199 | * rom_write | |
2200 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2201 | * given address. | |
2202 | * If successful returns the number of bytes written, otherwise it returns | |
2203 | * a negative error number of the problem. | |
2204 | ****************************************************************************/ | |
03f0dbf7 AC |
2205 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2206 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2207 | { |
2208 | int result; | |
2209 | __u16 current_length; | |
2210 | unsigned char *transfer_buffer; | |
2211 | ||
03f0dbf7 | 2212 | /* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */ |
1da177e4 | 2213 | |
03f0dbf7 | 2214 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2215 | if (!transfer_buffer) { |
03f0dbf7 AC |
2216 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2217 | __func__, 64); | |
1da177e4 LT |
2218 | return -ENOMEM; |
2219 | } | |
2220 | ||
2221 | /* need to split these writes up into 64 byte chunks */ | |
2222 | result = 0; | |
2223 | while (length > 0) { | |
03f0dbf7 | 2224 | if (length > 64) |
1da177e4 | 2225 | current_length = 64; |
03f0dbf7 | 2226 | else |
1da177e4 | 2227 | current_length = length; |
03f0dbf7 AC |
2228 | /* dbg("%s - writing %x, %x, %d", __func__, |
2229 | extAddr, addr, current_length); */ | |
2230 | memcpy(transfer_buffer, data, current_length); | |
2231 | result = usb_control_msg(serial->dev, | |
2232 | usb_sndctrlpipe(serial->dev, 0), | |
2233 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2234 | addr, extAddr, | |
2235 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2236 | if (result < 0) |
2237 | break; | |
2238 | length -= current_length; | |
2239 | addr += current_length; | |
2240 | data += current_length; | |
03f0dbf7 | 2241 | } |
1da177e4 | 2242 | |
03f0dbf7 | 2243 | kfree(transfer_buffer); |
1da177e4 LT |
2244 | return result; |
2245 | } | |
2246 | ||
2247 | ||
2248 | /**************************************************************************** | |
2249 | * rom_read | |
2250 | * reads a number of bytes from the Edgeport device starting at the given | |
2251 | * address. | |
2252 | * If successful returns the number of bytes read, otherwise it returns | |
2253 | * a negative error number of the problem. | |
2254 | ****************************************************************************/ | |
03f0dbf7 AC |
2255 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2256 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2257 | { |
2258 | int result; | |
2259 | __u16 current_length; | |
2260 | unsigned char *transfer_buffer; | |
2261 | ||
441b62c1 | 2262 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 | 2263 | |
03f0dbf7 | 2264 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2265 | if (!transfer_buffer) { |
03f0dbf7 AC |
2266 | dev_err(&serial->dev->dev, |
2267 | "%s - kmalloc(%d) failed.\n", __func__, 64); | |
1da177e4 LT |
2268 | return -ENOMEM; |
2269 | } | |
2270 | ||
2271 | /* need to split these reads up into 64 byte chunks */ | |
2272 | result = 0; | |
2273 | while (length > 0) { | |
03f0dbf7 | 2274 | if (length > 64) |
1da177e4 | 2275 | current_length = 64; |
03f0dbf7 | 2276 | else |
1da177e4 | 2277 | current_length = length; |
03f0dbf7 AC |
2278 | /* dbg("%s - %x, %x, %d", __func__, |
2279 | extAddr, addr, current_length); */ | |
2280 | result = usb_control_msg(serial->dev, | |
2281 | usb_rcvctrlpipe(serial->dev, 0), | |
2282 | USB_REQUEST_ION_READ_ROM, | |
2283 | 0xC0, addr, extAddr, transfer_buffer, | |
2284 | current_length, 300); | |
1da177e4 LT |
2285 | if (result < 0) |
2286 | break; | |
03f0dbf7 | 2287 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2288 | length -= current_length; |
2289 | addr += current_length; | |
2290 | data += current_length; | |
03f0dbf7 | 2291 | } |
1da177e4 | 2292 | |
03f0dbf7 | 2293 | kfree(transfer_buffer); |
1da177e4 LT |
2294 | return result; |
2295 | } | |
2296 | ||
2297 | ||
2298 | /**************************************************************************** | |
2299 | * send_iosp_ext_cmd | |
2300 | * Is used to send a IOSP message to the Edgeport device | |
2301 | ****************************************************************************/ | |
03f0dbf7 AC |
2302 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2303 | __u8 command, __u8 param) | |
1da177e4 LT |
2304 | { |
2305 | unsigned char *buffer; | |
2306 | unsigned char *currentCommand; | |
2307 | int length = 0; | |
2308 | int status = 0; | |
2309 | ||
441b62c1 | 2310 | dbg("%s - %d, %d", __func__, command, param); |
1da177e4 | 2311 | |
03f0dbf7 | 2312 | buffer = kmalloc(10, GFP_ATOMIC); |
1da177e4 | 2313 | if (!buffer) { |
03f0dbf7 AC |
2314 | dev_err(&edge_port->port->dev, |
2315 | "%s - kmalloc(%d) failed.\n", __func__, 10); | |
1da177e4 LT |
2316 | return -ENOMEM; |
2317 | } | |
2318 | ||
2319 | currentCommand = buffer; | |
2320 | ||
03f0dbf7 AC |
2321 | MAKE_CMD_EXT_CMD(¤tCommand, &length, |
2322 | edge_port->port->number - edge_port->port->serial->minor, | |
2323 | command, param); | |
1da177e4 | 2324 | |
03f0dbf7 | 2325 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2326 | if (status) { |
2327 | /* something bad happened, let's free up the memory */ | |
2328 | kfree(buffer); | |
2329 | } | |
2330 | ||
2331 | return status; | |
2332 | } | |
2333 | ||
2334 | ||
2335 | /***************************************************************************** | |
2336 | * write_cmd_usb | |
2337 | * this function writes the given buffer out to the bulk write endpoint. | |
2338 | *****************************************************************************/ | |
03f0dbf7 AC |
2339 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2340 | unsigned char *buffer, int length) | |
1da177e4 | 2341 | { |
03f0dbf7 AC |
2342 | struct edgeport_serial *edge_serial = |
2343 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2344 | int status = 0; |
2345 | struct urb *urb; | |
1da177e4 | 2346 | |
03f0dbf7 AC |
2347 | usb_serial_debug_data(debug, &edge_port->port->dev, |
2348 | __func__, length, buffer); | |
1da177e4 LT |
2349 | |
2350 | /* Allocate our next urb */ | |
03f0dbf7 | 2351 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2352 | if (!urb) |
2353 | return -ENOMEM; | |
2354 | ||
96c706ed | 2355 | atomic_inc(&CmdUrbs); |
03f0dbf7 AC |
2356 | dbg("%s - ALLOCATE URB %p (outstanding %d)", |
2357 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2358 | |
03f0dbf7 AC |
2359 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2360 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2361 | edge_serial->bulk_out_endpoint), | |
2362 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2363 | |
cb8eaa8b | 2364 | edge_port->commandPending = true; |
1da177e4 LT |
2365 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2366 | ||
2367 | if (status) { | |
2368 | /* something went wrong */ | |
03f0dbf7 AC |
2369 | dev_err(&edge_port->port->dev, |
2370 | "%s - usb_submit_urb(write command) failed, status = %d\n", | |
2371 | __func__, status); | |
1da177e4 LT |
2372 | usb_kill_urb(urb); |
2373 | usb_free_urb(urb); | |
96c706ed | 2374 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2375 | return status; |
2376 | } | |
2377 | ||
1da177e4 | 2378 | #if 0 |
03f0dbf7 | 2379 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2380 | |
cb8eaa8b | 2381 | if (edge_port->commandPending) { |
1da177e4 | 2382 | /* command timed out */ |
441b62c1 | 2383 | dbg("%s - command timed out", __func__); |
1da177e4 LT |
2384 | status = -EINVAL; |
2385 | } | |
2386 | #endif | |
2387 | return status; | |
2388 | } | |
2389 | ||
2390 | ||
2391 | /***************************************************************************** | |
2392 | * send_cmd_write_baud_rate | |
2393 | * this function sends the proper command to change the baud rate of the | |
2394 | * specified port. | |
2395 | *****************************************************************************/ | |
03f0dbf7 AC |
2396 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2397 | int baudRate) | |
1da177e4 | 2398 | { |
03f0dbf7 AC |
2399 | struct edgeport_serial *edge_serial = |
2400 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2401 | unsigned char *cmdBuffer; |
2402 | unsigned char *currCmd; | |
2403 | int cmdLen = 0; | |
2404 | int divisor; | |
2405 | int status; | |
03f0dbf7 AC |
2406 | unsigned char number = |
2407 | edge_port->port->number - edge_port->port->serial->minor; | |
1da177e4 | 2408 | |
bc71e479 AK |
2409 | if (edge_serial->is_epic && |
2410 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
6e8cf775 GKH |
2411 | dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d", |
2412 | edge_port->port->number, baudRate); | |
2413 | return 0; | |
2414 | } | |
2415 | ||
03f0dbf7 AC |
2416 | dbg("%s - port = %d, baud = %d", __func__, |
2417 | edge_port->port->number, baudRate); | |
1da177e4 | 2418 | |
03f0dbf7 | 2419 | status = calc_baud_rate_divisor(baudRate, &divisor); |
1da177e4 | 2420 | if (status) { |
03f0dbf7 AC |
2421 | dev_err(&edge_port->port->dev, "%s - bad baud rate\n", |
2422 | __func__); | |
1da177e4 LT |
2423 | return status; |
2424 | } | |
2425 | ||
03f0dbf7 AC |
2426 | /* Alloc memory for the string of commands. */ |
2427 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
1da177e4 | 2428 | if (!cmdBuffer) { |
03f0dbf7 AC |
2429 | dev_err(&edge_port->port->dev, |
2430 | "%s - kmalloc(%d) failed.\n", __func__, 0x100); | |
1da177e4 LT |
2431 | return -ENOMEM; |
2432 | } | |
2433 | currCmd = cmdBuffer; | |
2434 | ||
03f0dbf7 AC |
2435 | /* Enable access to divisor latch */ |
2436 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2437 | |
03f0dbf7 AC |
2438 | /* Write the divisor itself */ |
2439 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2440 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2441 | |
03f0dbf7 AC |
2442 | /* Restore original value to disable access to divisor latch */ |
2443 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2444 | edge_port->shadowLCR); | |
1da177e4 | 2445 | |
03f0dbf7 | 2446 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2447 | if (status) { |
2448 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2449 | kfree(cmdBuffer); |
1da177e4 LT |
2450 | } |
2451 | ||
2452 | return status; | |
2453 | } | |
2454 | ||
2455 | ||
2456 | /***************************************************************************** | |
2457 | * calc_baud_rate_divisor | |
2458 | * this function calculates the proper baud rate divisor for the specified | |
2459 | * baud rate. | |
2460 | *****************************************************************************/ | |
03f0dbf7 | 2461 | static int calc_baud_rate_divisor(int baudrate, int *divisor) |
1da177e4 LT |
2462 | { |
2463 | int i; | |
2464 | __u16 custom; | |
2465 | ||
2466 | ||
441b62c1 | 2467 | dbg("%s - %d", __func__, baudrate); |
1da177e4 | 2468 | |
52950ed4 | 2469 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2470 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2471 | *divisor = divisor_table[i].Divisor; |
2472 | return 0; | |
2473 | } | |
2474 | } | |
2475 | ||
03f0dbf7 AC |
2476 | /* We have tried all of the standard baud rates |
2477 | * lets try to calculate the divisor for this baud rate | |
2478 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2479 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2480 | /* get divisor */ |
1da177e4 LT |
2481 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2482 | ||
2483 | *divisor = custom; | |
2484 | ||
759f3634 | 2485 | dbg("%s - Baud %d = %d", __func__, baudrate, custom); |
1da177e4 LT |
2486 | return 0; |
2487 | } | |
2488 | ||
2489 | return -1; | |
2490 | } | |
2491 | ||
2492 | ||
2493 | /***************************************************************************** | |
2494 | * send_cmd_write_uart_register | |
fd589a8f | 2495 | * this function builds up a uart register message and sends to the device. |
1da177e4 | 2496 | *****************************************************************************/ |
03f0dbf7 AC |
2497 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2498 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2499 | { |
03f0dbf7 AC |
2500 | struct edgeport_serial *edge_serial = |
2501 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2502 | unsigned char *cmdBuffer; |
2503 | unsigned char *currCmd; | |
2504 | unsigned long cmdLen = 0; | |
2505 | int status; | |
2506 | ||
03f0dbf7 AC |
2507 | dbg("%s - write to %s register 0x%02x", |
2508 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2509 | |
bc71e479 AK |
2510 | if (edge_serial->is_epic && |
2511 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2512 | regNum == MCR) { | |
beb7dd86 | 2513 | dbg("SendCmdWriteUartReg - Not writing to MCR Register"); |
6e8cf775 GKH |
2514 | return 0; |
2515 | } | |
2516 | ||
bc71e479 AK |
2517 | if (edge_serial->is_epic && |
2518 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2519 | regNum == LCR) { | |
03f0dbf7 | 2520 | dbg("SendCmdWriteUartReg - Not writing to LCR Register"); |
6e8cf775 GKH |
2521 | return 0; |
2522 | } | |
2523 | ||
03f0dbf7 AC |
2524 | /* Alloc memory for the string of commands. */ |
2525 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2526 | if (cmdBuffer == NULL) | |
1da177e4 | 2527 | return -ENOMEM; |
1da177e4 LT |
2528 | |
2529 | currCmd = cmdBuffer; | |
2530 | ||
03f0dbf7 AC |
2531 | /* Build a cmd in the buffer to write the given register */ |
2532 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, | |
2533 | edge_port->port->number - edge_port->port->serial->minor, | |
2534 | regNum, regValue); | |
1da177e4 LT |
2535 | |
2536 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2537 | if (status) { | |
2538 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2539 | kfree(cmdBuffer); |
1da177e4 LT |
2540 | } |
2541 | ||
2542 | return status; | |
2543 | } | |
2544 | ||
2545 | ||
2546 | /***************************************************************************** | |
2547 | * change_port_settings | |
03f0dbf7 AC |
2548 | * This routine is called to set the UART on the device to match the |
2549 | * specified new settings. | |
1da177e4 | 2550 | *****************************************************************************/ |
95da310e AC |
2551 | |
2552 | static void change_port_settings(struct tty_struct *tty, | |
2553 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2554 | { |
03f0dbf7 AC |
2555 | struct edgeport_serial *edge_serial = |
2556 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2557 | int baud; |
2558 | unsigned cflag; | |
2559 | __u8 mask = 0xff; | |
2560 | __u8 lData; | |
2561 | __u8 lParity; | |
2562 | __u8 lStop; | |
2563 | __u8 rxFlow; | |
2564 | __u8 txFlow; | |
2565 | int status; | |
2566 | ||
441b62c1 | 2567 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2568 | |
cb8eaa8b RK |
2569 | if (!edge_port->open && |
2570 | !edge_port->openPending) { | |
441b62c1 | 2571 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
2572 | return; |
2573 | } | |
2574 | ||
1da177e4 LT |
2575 | cflag = tty->termios->c_cflag; |
2576 | ||
2577 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2578 | case CS5: |
2579 | lData = LCR_BITS_5; mask = 0x1f; | |
2580 | dbg("%s - data bits = 5", __func__); | |
2581 | break; | |
2582 | case CS6: | |
2583 | lData = LCR_BITS_6; mask = 0x3f; | |
2584 | dbg("%s - data bits = 6", __func__); | |
2585 | break; | |
2586 | case CS7: | |
2587 | lData = LCR_BITS_7; mask = 0x7f; | |
2588 | dbg("%s - data bits = 7", __func__); | |
2589 | break; | |
2590 | default: | |
2591 | case CS8: | |
2592 | lData = LCR_BITS_8; | |
2593 | dbg("%s - data bits = 8", __func__); | |
2594 | break; | |
1da177e4 LT |
2595 | } |
2596 | ||
2597 | lParity = LCR_PAR_NONE; | |
2598 | if (cflag & PARENB) { | |
2599 | if (cflag & CMSPAR) { | |
2600 | if (cflag & PARODD) { | |
2601 | lParity = LCR_PAR_MARK; | |
441b62c1 | 2602 | dbg("%s - parity = mark", __func__); |
1da177e4 LT |
2603 | } else { |
2604 | lParity = LCR_PAR_SPACE; | |
441b62c1 | 2605 | dbg("%s - parity = space", __func__); |
1da177e4 LT |
2606 | } |
2607 | } else if (cflag & PARODD) { | |
2608 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2609 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2610 | } else { |
2611 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2612 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2613 | } |
2614 | } else { | |
441b62c1 | 2615 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2616 | } |
2617 | ||
2618 | if (cflag & CSTOPB) { | |
2619 | lStop = LCR_STOP_2; | |
441b62c1 | 2620 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2621 | } else { |
2622 | lStop = LCR_STOP_1; | |
441b62c1 | 2623 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2624 | } |
2625 | ||
2626 | /* figure out the flow control settings */ | |
2627 | rxFlow = txFlow = 0x00; | |
2628 | if (cflag & CRTSCTS) { | |
2629 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2630 | txFlow |= IOSP_TX_FLOW_CTS; | |
441b62c1 | 2631 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2632 | } else { |
441b62c1 | 2633 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2634 | } |
2635 | ||
03f0dbf7 AC |
2636 | /* if we are implementing XON/XOFF, set the start and stop character |
2637 | in the device */ | |
1da177e4 LT |
2638 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2639 | unsigned char stop_char = STOP_CHAR(tty); | |
2640 | unsigned char start_char = START_CHAR(tty); | |
2641 | ||
6e8cf775 GKH |
2642 | if ((!edge_serial->is_epic) || |
2643 | ((edge_serial->is_epic) && | |
2644 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
03f0dbf7 AC |
2645 | send_iosp_ext_cmd(edge_port, |
2646 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2647 | send_iosp_ext_cmd(edge_port, | |
2648 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2649 | } |
1da177e4 LT |
2650 | |
2651 | /* if we are implementing INBOUND XON/XOFF */ | |
2652 | if (I_IXOFF(tty)) { | |
2653 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
03f0dbf7 AC |
2654 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", |
2655 | __func__, start_char, stop_char); | |
1da177e4 | 2656 | } else { |
441b62c1 | 2657 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2658 | } |
2659 | ||
2660 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2661 | if (I_IXON(tty)) { | |
2662 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
03f0dbf7 AC |
2663 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", |
2664 | __func__, start_char, stop_char); | |
1da177e4 | 2665 | } else { |
441b62c1 | 2666 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2667 | } |
2668 | } | |
2669 | ||
2670 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2671 | if ((!edge_serial->is_epic) || |
2672 | ((edge_serial->is_epic) && | |
2673 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2674 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2675 | if ((!edge_serial->is_epic) || | |
2676 | ((edge_serial->is_epic) && | |
2677 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2678 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2679 | |
2680 | ||
2681 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2682 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2683 | ||
2684 | edge_port->validDataMask = mask; | |
2685 | ||
2686 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2687 | status = send_cmd_write_uart_register(edge_port, LCR, |
2688 | edge_port->shadowLCR); | |
2689 | if (status != 0) | |
1da177e4 | 2690 | return; |
1da177e4 LT |
2691 | |
2692 | /* set up the MCR register and send it to the EdgePort */ | |
2693 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2694 | if (cflag & CBAUD) |
1da177e4 | 2695 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2696 | |
2697 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2698 | edge_port->shadowMCR); | |
2699 | if (status != 0) | |
1da177e4 | 2700 | return; |
1da177e4 LT |
2701 | |
2702 | /* Determine divisor based on baud rate */ | |
2703 | baud = tty_get_baud_rate(tty); | |
2704 | if (!baud) { | |
2705 | /* pick a default, any default... */ | |
2706 | baud = 9600; | |
2707 | } | |
2708 | ||
441b62c1 | 2709 | dbg("%s - baud rate = %d", __func__, baud); |
03f0dbf7 | 2710 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2711 | if (status == -1) { |
2712 | /* Speed change was not possible - put back the old speed */ | |
2713 | baud = tty_termios_baud_rate(old_termios); | |
2714 | tty_encode_baud_rate(tty, baud, baud); | |
2715 | } | |
1da177e4 LT |
2716 | } |
2717 | ||
2718 | ||
2719 | /**************************************************************************** | |
2720 | * unicode_to_ascii | |
2721 | * Turns a string from Unicode into ASCII. | |
2722 | * Doesn't do a good job with any characters that are outside the normal | |
2723 | * ASCII range, but it's only for debugging... | |
2724 | * NOTE: expects the unicode in LE format | |
2725 | ****************************************************************************/ | |
03f0dbf7 AC |
2726 | static void unicode_to_ascii(char *string, int buflen, |
2727 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2728 | { |
2729 | int i; | |
2730 | ||
ad93375a | 2731 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2732 | return; |
ad93375a | 2733 | --buflen; /* space for nul */ |
1da177e4 | 2734 | |
ad93375a PZ |
2735 | for (i = 0; i < unicode_size; i++) { |
2736 | if (i >= buflen) | |
2737 | break; | |
1da177e4 | 2738 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2739 | } |
2740 | string[i] = 0x00; | |
1da177e4 LT |
2741 | } |
2742 | ||
2743 | ||
2744 | /**************************************************************************** | |
2745 | * get_manufacturing_desc | |
03f0dbf7 | 2746 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2747 | * structure. |
2748 | ****************************************************************************/ | |
03f0dbf7 | 2749 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 LT |
2750 | { |
2751 | int response; | |
2752 | ||
2753 | dbg("getting manufacturer descriptor"); | |
2754 | ||
03f0dbf7 AC |
2755 | response = rom_read(edge_serial->serial, |
2756 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2757 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2758 | EDGE_MANUF_DESC_LEN, | |
2759 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2760 | |
03f0dbf7 AC |
2761 | if (response < 1) |
2762 | dev_err(&edge_serial->serial->dev->dev, | |
2763 | "error in getting manufacturer descriptor\n"); | |
2764 | else { | |
1da177e4 LT |
2765 | char string[30]; |
2766 | dbg("**Manufacturer Descriptor"); | |
03f0dbf7 AC |
2767 | dbg(" RomSize: %dK", |
2768 | edge_serial->manuf_descriptor.RomSize); | |
2769 | dbg(" RamSize: %dK", | |
2770 | edge_serial->manuf_descriptor.RamSize); | |
2771 | dbg(" CpuRev: %d", | |
2772 | edge_serial->manuf_descriptor.CpuRev); | |
2773 | dbg(" BoardRev: %d", | |
2774 | edge_serial->manuf_descriptor.BoardRev); | |
2775 | dbg(" NumPorts: %d", | |
2776 | edge_serial->manuf_descriptor.NumPorts); | |
2777 | dbg(" DescDate: %d/%d/%d", | |
2778 | edge_serial->manuf_descriptor.DescDate[0], | |
2779 | edge_serial->manuf_descriptor.DescDate[1], | |
2780 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2781 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2782 | edge_serial->manuf_descriptor.SerialNumber, |
2783 | edge_serial->manuf_descriptor.SerNumLength/2); | |
1da177e4 | 2784 | dbg(" SerialNumber: %s", string); |
4bc203d9 | 2785 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2786 | edge_serial->manuf_descriptor.AssemblyNumber, |
2787 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
1da177e4 | 2788 | dbg(" AssemblyNumber: %s", string); |
4bc203d9 | 2789 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2790 | edge_serial->manuf_descriptor.OemAssyNumber, |
2791 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
1da177e4 | 2792 | dbg(" OemAssyNumber: %s", string); |
03f0dbf7 AC |
2793 | dbg(" UartType: %d", |
2794 | edge_serial->manuf_descriptor.UartType); | |
2795 | dbg(" IonPid: %d", | |
2796 | edge_serial->manuf_descriptor.IonPid); | |
2797 | dbg(" IonConfig: %d", | |
2798 | edge_serial->manuf_descriptor.IonConfig); | |
1da177e4 LT |
2799 | } |
2800 | } | |
2801 | ||
2802 | ||
2803 | /**************************************************************************** | |
2804 | * get_boot_desc | |
03f0dbf7 | 2805 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2806 | * structure. |
2807 | ****************************************************************************/ | |
03f0dbf7 | 2808 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 LT |
2809 | { |
2810 | int response; | |
2811 | ||
2812 | dbg("getting boot descriptor"); | |
2813 | ||
03f0dbf7 AC |
2814 | response = rom_read(edge_serial->serial, |
2815 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2816 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2817 | EDGE_BOOT_DESC_LEN, | |
2818 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2819 | |
03f0dbf7 AC |
2820 | if (response < 1) |
2821 | dev_err(&edge_serial->serial->dev->dev, | |
2822 | "error in getting boot descriptor\n"); | |
2823 | else { | |
1da177e4 | 2824 | dbg("**Boot Descriptor:"); |
03f0dbf7 AC |
2825 | dbg(" BootCodeLength: %d", |
2826 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2827 | dbg(" MajorVersion: %d", | |
2828 | edge_serial->boot_descriptor.MajorVersion); | |
2829 | dbg(" MinorVersion: %d", | |
2830 | edge_serial->boot_descriptor.MinorVersion); | |
2831 | dbg(" BuildNumber: %d", | |
2832 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
2833 | dbg(" Capabilities: 0x%x", | |
2834 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); | |
2835 | dbg(" UConfig0: %d", | |
2836 | edge_serial->boot_descriptor.UConfig0); | |
2837 | dbg(" UConfig1: %d", | |
2838 | edge_serial->boot_descriptor.UConfig1); | |
1da177e4 LT |
2839 | } |
2840 | } | |
2841 | ||
2842 | ||
2843 | /**************************************************************************** | |
2844 | * load_application_firmware | |
2845 | * This is called to load the application firmware to the device | |
2846 | ****************************************************************************/ | |
03f0dbf7 | 2847 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2848 | { |
5b9ea932 JS |
2849 | const struct ihex_binrec *rec; |
2850 | const struct firmware *fw; | |
2851 | const char *fw_name; | |
2852 | const char *fw_info; | |
1da177e4 | 2853 | int response; |
5b9ea932 JS |
2854 | __u32 Operaddr; |
2855 | __u16 build; | |
1da177e4 LT |
2856 | |
2857 | switch (edge_serial->product_info.iDownloadFile) { | |
2858 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2859 | fw_info = "downloading firmware version (930)"; |
2860 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2861 | break; |
2862 | ||
2863 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2864 | fw_info = "downloading firmware version (80251)"; |
2865 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2866 | break; |
2867 | ||
2868 | case EDGE_DOWNLOAD_FILE_NONE: | |
759f3634 | 2869 | dbg("No download file specified, skipping download"); |
1da177e4 LT |
2870 | return; |
2871 | ||
2872 | default: | |
2873 | return; | |
2874 | } | |
2875 | ||
5b9ea932 JS |
2876 | response = request_ihex_firmware(&fw, fw_name, |
2877 | &edge_serial->serial->dev->dev); | |
2878 | if (response) { | |
2879 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
2880 | fw_name, response); | |
2881 | return; | |
2882 | } | |
2883 | ||
2884 | rec = (const struct ihex_binrec *)fw->data; | |
2885 | build = (rec->data[2] << 8) | rec->data[3]; | |
2886 | ||
2887 | dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build); | |
2888 | ||
271c1150 BM |
2889 | edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
2890 | edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; | |
5b9ea932 | 2891 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
1da177e4 | 2892 | |
5b9ea932 JS |
2893 | for (rec = ihex_next_binrec(rec); rec; |
2894 | rec = ihex_next_binrec(rec)) { | |
2895 | Operaddr = be32_to_cpu(rec->addr); | |
2896 | response = sram_write(edge_serial->serial, | |
2897 | Operaddr >> 16, | |
2898 | Operaddr & 0xFFFF, | |
2899 | be16_to_cpu(rec->len), | |
2900 | &rec->data[0]); | |
1da177e4 | 2901 | if (response < 0) { |
5b9ea932 JS |
2902 | dev_err(&edge_serial->serial->dev->dev, |
2903 | "sram_write failed (%x, %x, %d)\n", | |
2904 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2905 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2906 | break; |
2907 | } | |
2908 | } | |
2909 | ||
2910 | dbg("sending exec_dl_code"); | |
2911 | response = usb_control_msg (edge_serial->serial->dev, | |
2912 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2913 | USB_REQUEST_ION_EXEC_DL_CODE, | |
2914 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); | |
2915 | ||
5b9ea932 | 2916 | release_firmware(fw); |
1da177e4 LT |
2917 | } |
2918 | ||
2919 | ||
2920 | /**************************************************************************** | |
2921 | * edge_startup | |
2922 | ****************************************************************************/ | |
03f0dbf7 | 2923 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2924 | { |
2925 | struct edgeport_serial *edge_serial; | |
2926 | struct edgeport_port *edge_port; | |
2927 | struct usb_device *dev; | |
bfd5df3c | 2928 | int i, j; |
6e8cf775 | 2929 | int response; |
cb8eaa8b RK |
2930 | bool interrupt_in_found; |
2931 | bool bulk_in_found; | |
2932 | bool bulk_out_found; | |
6e8cf775 GKH |
2933 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2934 | EDGE_COMPATIBILITY_MASK1, | |
2935 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2936 | |
2937 | dev = serial->dev; | |
2938 | ||
2939 | /* create our private serial structure */ | |
80b6ca48 | 2940 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2941 | if (edge_serial == NULL) { |
441b62c1 | 2942 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2943 | return -ENOMEM; |
2944 | } | |
1da177e4 LT |
2945 | spin_lock_init(&edge_serial->es_lock); |
2946 | edge_serial->serial = serial; | |
2947 | usb_set_serial_data(serial, edge_serial); | |
2948 | ||
2949 | /* get the name for the device from the device */ | |
f10718f5 | 2950 | i = usb_string(dev, dev->descriptor.iManufacturer, |
ad93375a | 2951 | &edge_serial->name[0], MAX_NAME_LEN+1); |
f10718f5 DC |
2952 | if (i < 0) |
2953 | i = 0; | |
ad93375a | 2954 | edge_serial->name[i++] = ' '; |
f10718f5 | 2955 | usb_string(dev, dev->descriptor.iProduct, |
ad93375a | 2956 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
1da177e4 LT |
2957 | |
2958 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2959 | ||
6e8cf775 GKH |
2960 | /* Read the epic descriptor */ |
2961 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2962 | /* memcpy descriptor to Supports structures */ | |
2963 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2964 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2965 | |
6e8cf775 | 2966 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 2967 | get_manufacturing_desc(edge_serial); |
1da177e4 | 2968 | |
6e8cf775 | 2969 | /* get the boot descriptor */ |
03f0dbf7 | 2970 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
2971 | |
2972 | get_product_info(edge_serial); | |
2973 | } | |
1da177e4 LT |
2974 | |
2975 | /* set the number of ports from the manufacturing description */ | |
2976 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2977 | if ((!edge_serial->is_epic) && |
2978 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
2979 | dev_warn(&serial->dev->dev, "Device Reported %d serial ports " | |
2980 | "vs. core thinking we have %d ports, email " | |
898eb71c | 2981 | "greg@kroah.com this information.\n", |
6e8cf775 GKH |
2982 | edge_serial->product_info.NumPorts, |
2983 | serial->num_ports); | |
1da177e4 LT |
2984 | } |
2985 | ||
441b62c1 | 2986 | dbg("%s - time 1 %ld", __func__, jiffies); |
1da177e4 | 2987 | |
6e8cf775 GKH |
2988 | /* If not an EPiC device */ |
2989 | if (!edge_serial->is_epic) { | |
2990 | /* now load the application firmware into this device */ | |
03f0dbf7 | 2991 | load_application_firmware(edge_serial); |
1da177e4 | 2992 | |
441b62c1 | 2993 | dbg("%s - time 2 %ld", __func__, jiffies); |
1da177e4 | 2994 | |
6e8cf775 | 2995 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 2996 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 2997 | |
441b62c1 | 2998 | dbg("%s - time 3 %ld", __func__, jiffies); |
6e8cf775 GKH |
2999 | |
3000 | /* set the configuration to use #1 */ | |
03f0dbf7 AC |
3001 | /* dbg("set_configuration 1"); */ |
3002 | /* usb_set_configuration (dev, 1); */ | |
6e8cf775 | 3003 | } |
5b9ea932 JS |
3004 | dbg(" FirmwareMajorVersion %d.%d.%d", |
3005 | edge_serial->product_info.FirmwareMajorVersion, | |
3006 | edge_serial->product_info.FirmwareMinorVersion, | |
3007 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 3008 | |
03f0dbf7 | 3009 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
3010 | * as the structures aren't created yet. */ |
3011 | ||
3012 | /* set up our port private structures */ | |
3013 | for (i = 0; i < serial->num_ports; ++i) { | |
1ac93a30 | 3014 | edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 3015 | if (edge_port == NULL) { |
03f0dbf7 AC |
3016 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
3017 | __func__); | |
bfd5df3c | 3018 | for (j = 0; j < i; ++j) { |
03f0dbf7 AC |
3019 | kfree(usb_get_serial_port_data(serial->port[j])); |
3020 | usb_set_serial_port_data(serial->port[j], | |
3021 | NULL); | |
bfd5df3c | 3022 | } |
1da177e4 LT |
3023 | usb_set_serial_data(serial, NULL); |
3024 | kfree(edge_serial); | |
3025 | return -ENOMEM; | |
3026 | } | |
1da177e4 LT |
3027 | spin_lock_init(&edge_port->ep_lock); |
3028 | edge_port->port = serial->port[i]; | |
3029 | usb_set_serial_port_data(serial->port[i], edge_port); | |
3030 | } | |
6e8cf775 GKH |
3031 | |
3032 | response = 0; | |
3033 | ||
3034 | if (edge_serial->is_epic) { | |
03f0dbf7 AC |
3035 | /* EPIC thing, set up our interrupt polling now and our read |
3036 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 3037 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
03f0dbf7 AC |
3038 | for (i = 0; i < serial->interface->altsetting[0] |
3039 | .desc.bNumEndpoints; ++i) { | |
6e8cf775 GKH |
3040 | struct usb_endpoint_descriptor *endpoint; |
3041 | int buffer_size; | |
3042 | ||
03f0dbf7 AC |
3043 | endpoint = &serial->interface->altsetting[0]. |
3044 | endpoint[i].desc; | |
29cc8897 | 3045 | buffer_size = usb_endpoint_maxp(endpoint); |
cb8eaa8b | 3046 | if (!interrupt_in_found && |
6e8cf775 GKH |
3047 | (usb_endpoint_is_int_in(endpoint))) { |
3048 | /* we found a interrupt in endpoint */ | |
3049 | dbg("found interrupt in"); | |
3050 | ||
3051 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3052 | edge_serial->interrupt_read_urb = |
3053 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3054 | if (!edge_serial->interrupt_read_urb) { |
194343d9 | 3055 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3056 | return -ENOMEM; |
3057 | } | |
03f0dbf7 AC |
3058 | edge_serial->interrupt_in_buffer = |
3059 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3060 | if (!edge_serial->interrupt_in_buffer) { |
194343d9 | 3061 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3062 | usb_free_urb(edge_serial->interrupt_read_urb); |
3063 | return -ENOMEM; | |
3064 | } | |
03f0dbf7 AC |
3065 | edge_serial->interrupt_in_endpoint = |
3066 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3067 | |
3068 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
3069 | usb_fill_int_urb( |
3070 | edge_serial->interrupt_read_urb, | |
3071 | dev, | |
3072 | usb_rcvintpipe(dev, | |
3073 | endpoint->bEndpointAddress), | |
3074 | edge_serial->interrupt_in_buffer, | |
3075 | buffer_size, | |
3076 | edge_interrupt_callback, | |
3077 | edge_serial, | |
3078 | endpoint->bInterval); | |
6e8cf775 | 3079 | |
cb8eaa8b | 3080 | interrupt_in_found = true; |
6e8cf775 GKH |
3081 | } |
3082 | ||
cb8eaa8b | 3083 | if (!bulk_in_found && |
03f0dbf7 | 3084 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 GKH |
3085 | /* we found a bulk in endpoint */ |
3086 | dbg("found bulk in"); | |
3087 | ||
3088 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3089 | edge_serial->read_urb = |
3090 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3091 | if (!edge_serial->read_urb) { |
194343d9 | 3092 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3093 | return -ENOMEM; |
3094 | } | |
03f0dbf7 AC |
3095 | edge_serial->bulk_in_buffer = |
3096 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3097 | if (!edge_serial->bulk_in_buffer) { |
194343d9 | 3098 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3099 | usb_free_urb(edge_serial->read_urb); |
3100 | return -ENOMEM; | |
3101 | } | |
03f0dbf7 AC |
3102 | edge_serial->bulk_in_endpoint = |
3103 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3104 | |
3105 | /* set up our bulk in urb */ | |
3106 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
3107 | usb_rcvbulkpipe(dev, |
3108 | endpoint->bEndpointAddress), | |
3109 | edge_serial->bulk_in_buffer, | |
29cc8897 | 3110 | usb_endpoint_maxp(endpoint), |
03f0dbf7 AC |
3111 | edge_bulk_in_callback, |
3112 | edge_serial); | |
cb8eaa8b | 3113 | bulk_in_found = true; |
6e8cf775 GKH |
3114 | } |
3115 | ||
cb8eaa8b | 3116 | if (!bulk_out_found && |
6e8cf775 GKH |
3117 | (usb_endpoint_is_bulk_out(endpoint))) { |
3118 | /* we found a bulk out endpoint */ | |
3119 | dbg("found bulk out"); | |
03f0dbf7 AC |
3120 | edge_serial->bulk_out_endpoint = |
3121 | endpoint->bEndpointAddress; | |
cb8eaa8b | 3122 | bulk_out_found = true; |
6e8cf775 GKH |
3123 | } |
3124 | } | |
3125 | ||
cb8eaa8b | 3126 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
194343d9 GKH |
3127 | dev_err(&dev->dev, "Error - the proper endpoints " |
3128 | "were not found!\n"); | |
6e8cf775 GKH |
3129 | return -ENODEV; |
3130 | } | |
3131 | ||
3132 | /* start interrupt read for this edgeport this interrupt will | |
3133 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
3134 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
3135 | GFP_KERNEL); | |
6e8cf775 | 3136 | if (response) |
194343d9 GKH |
3137 | dev_err(&dev->dev, |
3138 | "%s - Error %d submitting control urb\n", | |
3139 | __func__, response); | |
6e8cf775 GKH |
3140 | } |
3141 | return response; | |
1da177e4 LT |
3142 | } |
3143 | ||
3144 | ||
3145 | /**************************************************************************** | |
f9c99bb8 | 3146 | * edge_disconnect |
1da177e4 LT |
3147 | * This function is called whenever the device is removed from the usb bus. |
3148 | ****************************************************************************/ | |
f9c99bb8 | 3149 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 3150 | { |
6e8cf775 | 3151 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 3152 | |
441b62c1 | 3153 | dbg("%s", __func__); |
1da177e4 LT |
3154 | |
3155 | /* stop reads and writes on all ports */ | |
6e8cf775 GKH |
3156 | /* free up our endpoint stuff */ |
3157 | if (edge_serial->is_epic) { | |
74ac07e8 | 3158 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
3159 | usb_free_urb(edge_serial->interrupt_read_urb); |
3160 | kfree(edge_serial->interrupt_in_buffer); | |
3161 | ||
74ac07e8 | 3162 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
3163 | usb_free_urb(edge_serial->read_urb); |
3164 | kfree(edge_serial->bulk_in_buffer); | |
3165 | } | |
f9c99bb8 AS |
3166 | } |
3167 | ||
3168 | ||
3169 | /**************************************************************************** | |
3170 | * edge_release | |
3171 | * This function is called when the device structure is deallocated. | |
3172 | ****************************************************************************/ | |
3173 | static void edge_release(struct usb_serial *serial) | |
3174 | { | |
3175 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
3176 | int i; | |
3177 | ||
3178 | dbg("%s", __func__); | |
3179 | ||
3180 | for (i = 0; i < serial->num_ports; ++i) | |
3181 | kfree(usb_get_serial_port_data(serial->port[i])); | |
6e8cf775 GKH |
3182 | |
3183 | kfree(edge_serial); | |
1da177e4 LT |
3184 | } |
3185 | ||
3186 | ||
3187 | /**************************************************************************** | |
3188 | * edgeport_init | |
3189 | * This is called by the module subsystem, or on startup to initialize us | |
3190 | ****************************************************************************/ | |
3191 | static int __init edgeport_init(void) | |
3192 | { | |
3193 | int retval; | |
3194 | ||
3195 | retval = usb_serial_register(&edgeport_2port_device); | |
3196 | if (retval) | |
3197 | goto failed_2port_device_register; | |
3198 | retval = usb_serial_register(&edgeport_4port_device); | |
3199 | if (retval) | |
3200 | goto failed_4port_device_register; | |
3201 | retval = usb_serial_register(&edgeport_8port_device); | |
3202 | if (retval) | |
3203 | goto failed_8port_device_register; | |
6e8cf775 GKH |
3204 | retval = usb_serial_register(&epic_device); |
3205 | if (retval) | |
3206 | goto failed_epic_device_register; | |
1da177e4 | 3207 | retval = usb_register(&io_driver); |
03f0dbf7 | 3208 | if (retval) |
1da177e4 | 3209 | goto failed_usb_register; |
96c706ed | 3210 | atomic_set(&CmdUrbs, 0); |
c197a8db GKH |
3211 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
3212 | DRIVER_DESC "\n"); | |
1da177e4 LT |
3213 | return 0; |
3214 | ||
3215 | failed_usb_register: | |
6e8cf775 GKH |
3216 | usb_serial_deregister(&epic_device); |
3217 | failed_epic_device_register: | |
1da177e4 LT |
3218 | usb_serial_deregister(&edgeport_8port_device); |
3219 | failed_8port_device_register: | |
3220 | usb_serial_deregister(&edgeport_4port_device); | |
3221 | failed_4port_device_register: | |
3222 | usb_serial_deregister(&edgeport_2port_device); | |
3223 | failed_2port_device_register: | |
3224 | return retval; | |
3225 | } | |
3226 | ||
3227 | ||
3228 | /**************************************************************************** | |
3229 | * edgeport_exit | |
3230 | * Called when the driver is about to be unloaded. | |
3231 | ****************************************************************************/ | |
3232 | static void __exit edgeport_exit (void) | |
3233 | { | |
03f0dbf7 AC |
3234 | usb_deregister(&io_driver); |
3235 | usb_serial_deregister(&edgeport_2port_device); | |
3236 | usb_serial_deregister(&edgeport_4port_device); | |
3237 | usb_serial_deregister(&edgeport_8port_device); | |
3238 | usb_serial_deregister(&epic_device); | |
1da177e4 LT |
3239 | } |
3240 | ||
3241 | module_init(edgeport_init); | |
3242 | module_exit(edgeport_exit); | |
3243 | ||
3244 | /* Module information */ | |
03f0dbf7 AC |
3245 | MODULE_AUTHOR(DRIVER_AUTHOR); |
3246 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3247 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3248 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3249 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3250 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3251 | MODULE_FIRMWARE("edgeport/down2.fw"); | |
1da177e4 LT |
3252 | |
3253 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3254 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |