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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 | ||
1da177e4 LT |
54 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" |
55 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
56 | ||
1da177e4 LT |
57 | #define MAX_NAME_LEN 64 |
58 | ||
59 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
60 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
61 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
62 | ||
63 | /* receive port state */ | |
64 | enum RXSTATE { | |
03f0dbf7 AC |
65 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
66 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
67 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
68 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
69 | }; |
70 | ||
71 | ||
03f0dbf7 AC |
72 | /* Transmit Fifo |
73 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
74 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
75 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
76 | */ | |
77 | struct TxFifo { | |
78 | unsigned int head; /* index to head pointer (write) */ | |
79 | unsigned int tail; /* index to tail pointer (read) */ | |
80 | unsigned int count; /* Bytes in queue */ | |
81 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
82 | unsigned char *fifo; /* allocated Buffer */ | |
83 | }; | |
84 | ||
85 | /* This structure holds all of the local port information */ | |
86 | struct edgeport_port { | |
87 | __u16 txCredits; /* our current credits for this port */ | |
88 | __u16 maxTxCredits; /* the max size of the port */ | |
89 | ||
90 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
91 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 92 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
93 | spinlock_t ep_lock; |
94 | ||
95 | __u8 shadowLCR; /* last LCR value received */ | |
96 | __u8 shadowMCR; /* last MCR value received */ | |
97 | __u8 shadowMSR; /* last MSR value received */ | |
98 | __u8 shadowLSR; /* last LSR value received */ | |
99 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
100 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
101 | __u8 validDataMask; | |
102 | __u32 baudRate; | |
103 | ||
cb8eaa8b RK |
104 | bool open; |
105 | bool openPending; | |
106 | bool commandPending; | |
107 | bool closePending; | |
108 | bool chaseResponsePending; | |
1da177e4 LT |
109 | |
110 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
111 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
112 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
1da177e4 LT |
113 | |
114 | struct async_icount icount; | |
115 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
116 | }; | |
117 | ||
118 | ||
119 | /* This structure holds all of the individual device information */ | |
120 | struct edgeport_serial { | |
ad93375a | 121 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
122 | |
123 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
124 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
125 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
126 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
127 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
128 | |
129 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
130 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
131 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
132 | |
133 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
134 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
135 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 136 | bool read_in_progress; |
1da177e4 LT |
137 | spinlock_t es_lock; |
138 | ||
139 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
140 | ||
141 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
142 | ||
143 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
144 | __u8 rxHeader1; /* receive header byte 1 */ | |
145 | __u8 rxHeader2; /* receive header byte 2 */ | |
146 | __u8 rxHeader3; /* receive header byte 3 */ | |
147 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
148 | __u8 rxStatusCode; /* the receive status code */ | |
149 | __u8 rxStatusParam; /* the receive status paramater */ | |
150 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
151 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
152 | }; | |
153 | ||
154 | /* baud rate information */ | |
155 | struct divisor_table_entry { | |
156 | __u32 BaudRate; | |
157 | __u16 Divisor; | |
158 | }; | |
159 | ||
03f0dbf7 AC |
160 | /* |
161 | * Define table of divisors for Rev A EdgePort/4 hardware | |
162 | * These assume a 3.6864MHz crystal, the standard /16, and | |
163 | * MCR.7 = 0. | |
164 | */ | |
165 | ||
4c4c9432 | 166 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
167 | { 50, 4608}, |
168 | { 75, 3072}, | |
169 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
170 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
171 | { 150, 1536}, |
172 | { 300, 768}, | |
173 | { 600, 384}, | |
174 | { 1200, 192}, | |
175 | { 1800, 128}, | |
176 | { 2400, 96}, | |
177 | { 4800, 48}, | |
178 | { 7200, 32}, | |
179 | { 9600, 24}, | |
180 | { 14400, 16}, | |
181 | { 19200, 12}, | |
182 | { 38400, 6}, | |
183 | { 57600, 4}, | |
184 | { 115200, 2}, | |
185 | { 230400, 1}, | |
186 | }; | |
187 | ||
36ccce49 GKH |
188 | /* Number of outstanding Command Write Urbs */ |
189 | static atomic_t CmdUrbs = ATOMIC_INIT(0); | |
1da177e4 LT |
190 | |
191 | ||
192 | /* local function prototypes */ | |
193 | ||
194 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
195 | static void edge_interrupt_callback(struct urb *urb); |
196 | static void edge_bulk_in_callback(struct urb *urb); | |
197 | static void edge_bulk_out_data_callback(struct urb *urb); | |
198 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
199 | |
200 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 201 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 202 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
203 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
204 | const unsigned char *buf, int count); | |
205 | static int edge_write_room(struct tty_struct *tty); | |
206 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
207 | static void edge_throttle(struct tty_struct *tty); | |
208 | static void edge_unthrottle(struct tty_struct *tty); | |
209 | static void edge_set_termios(struct tty_struct *tty, | |
210 | struct usb_serial_port *port, | |
211 | struct ktermios *old_termios); | |
00a0d0d6 | 212 | static int edge_ioctl(struct tty_struct *tty, |
03f0dbf7 AC |
213 | unsigned int cmd, unsigned long arg); |
214 | static void edge_break(struct tty_struct *tty, int break_state); | |
60b33c13 | 215 | static int edge_tiocmget(struct tty_struct *tty); |
20b9d177 | 216 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 217 | unsigned int set, unsigned int clear); |
0bca1b91 AC |
218 | static int edge_get_icount(struct tty_struct *tty, |
219 | struct serial_icounter_struct *icount); | |
03f0dbf7 | 220 | static int edge_startup(struct usb_serial *serial); |
f9c99bb8 AS |
221 | static void edge_disconnect(struct usb_serial *serial); |
222 | static void edge_release(struct usb_serial *serial); | |
c27f3efc JH |
223 | static int edge_port_probe(struct usb_serial_port *port); |
224 | static int edge_port_remove(struct usb_serial_port *port); | |
1da177e4 LT |
225 | |
226 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
227 | ||
1da177e4 | 228 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
229 | |
230 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
231 | unsigned char *buffer, __u16 bufferLength); | |
232 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
233 | __u8 byte2, __u8 byte3); | |
2e124b4a JS |
234 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
235 | int length); | |
03f0dbf7 AC |
236 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); |
237 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
238 | __u8 lsr, __u8 data); | |
239 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
240 | __u8 param); | |
984f6868 | 241 | static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); |
03f0dbf7 AC |
242 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
243 | int baudRate); | |
244 | static void change_port_settings(struct tty_struct *tty, | |
245 | struct edgeport_port *edge_port, | |
246 | struct ktermios *old_termios); | |
247 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
248 | __u8 regNum, __u8 regValue); | |
249 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
250 | unsigned char *buffer, int writeLength); | |
251 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
252 | struct edgeport_port *edge_port); | |
253 | ||
254 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
255 | __u16 length, const __u8 *data); | |
256 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
257 | __u16 length, __u8 *data); | |
258 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
259 | __u16 length, const __u8 *data); | |
260 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
261 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
262 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
263 | ||
264 | static void unicode_to_ascii(char *string, int buflen, | |
265 | __le16 *unicode, int unicode_size); | |
266 | ||
267 | ||
268 | /* ************************************************************************ */ | |
269 | /* ************************************************************************ */ | |
270 | /* ************************************************************************ */ | |
271 | /* ************************************************************************ */ | |
1da177e4 LT |
272 | |
273 | /************************************************************************ | |
274 | * * | |
275 | * update_edgeport_E2PROM() Compare current versions of * | |
276 | * Boot ROM and Manufacture * | |
277 | * Descriptors with versions * | |
278 | * embedded in this driver * | |
279 | * * | |
280 | ************************************************************************/ | |
03f0dbf7 | 281 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 | 282 | { |
984f6868 | 283 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
284 | __u32 BootCurVer; |
285 | __u32 BootNewVer; | |
5b9ea932 JS |
286 | __u8 BootMajorVersion; |
287 | __u8 BootMinorVersion; | |
288 | __u16 BootBuildNumber; | |
289 | __u32 Bootaddr; | |
290 | const struct ihex_binrec *rec; | |
291 | const struct firmware *fw; | |
292 | const char *fw_name; | |
1da177e4 LT |
293 | int response; |
294 | ||
1da177e4 | 295 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
296 | case EDGE_DOWNLOAD_FILE_I930: |
297 | fw_name = "edgeport/boot.fw"; | |
298 | break; | |
299 | case EDGE_DOWNLOAD_FILE_80251: | |
300 | fw_name = "edgeport/boot2.fw"; | |
301 | break; | |
302 | default: | |
303 | return; | |
1da177e4 LT |
304 | } |
305 | ||
5b9ea932 JS |
306 | response = request_ihex_firmware(&fw, fw_name, |
307 | &edge_serial->serial->dev->dev); | |
308 | if (response) { | |
984f6868 | 309 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
310 | fw_name, response); |
311 | return; | |
312 | } | |
313 | ||
314 | rec = (const struct ihex_binrec *)fw->data; | |
315 | BootMajorVersion = rec->data[0]; | |
316 | BootMinorVersion = rec->data[1]; | |
317 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
318 | ||
03f0dbf7 | 319 | /* Check Boot Image Version */ |
1da177e4 LT |
320 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
321 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
322 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
323 | ||
324 | BootNewVer = (BootMajorVersion << 24) + | |
325 | (BootMinorVersion << 16) + | |
5b9ea932 | 326 | BootBuildNumber; |
1da177e4 | 327 | |
984f6868 | 328 | dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", |
1da177e4 LT |
329 | edge_serial->boot_descriptor.MajorVersion, |
330 | edge_serial->boot_descriptor.MinorVersion, | |
331 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
332 | ||
333 | ||
334 | if (BootNewVer > BootCurVer) { | |
984f6868 | 335 | dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", |
1da177e4 LT |
336 | edge_serial->boot_descriptor.MajorVersion, |
337 | edge_serial->boot_descriptor.MinorVersion, | |
338 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 339 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 | 340 | |
984f6868 | 341 | dev_dbg(dev, "Downloading new Boot Image\n"); |
1da177e4 | 342 | |
5b9ea932 JS |
343 | for (rec = ihex_next_binrec(rec); rec; |
344 | rec = ihex_next_binrec(rec)) { | |
345 | Bootaddr = be32_to_cpu(rec->addr); | |
346 | response = rom_write(edge_serial->serial, | |
347 | Bootaddr >> 16, | |
348 | Bootaddr & 0xFFFF, | |
349 | be16_to_cpu(rec->len), | |
350 | &rec->data[0]); | |
1da177e4 | 351 | if (response < 0) { |
5b9ea932 JS |
352 | dev_err(&edge_serial->serial->dev->dev, |
353 | "rom_write failed (%x, %x, %d)\n", | |
354 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
355 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
356 | break; |
357 | } | |
358 | } | |
359 | } else { | |
984f6868 | 360 | dev_dbg(dev, "Boot Image -- already up to date\n"); |
1da177e4 | 361 | } |
5b9ea932 | 362 | release_firmware(fw); |
1da177e4 LT |
363 | } |
364 | ||
1da177e4 LT |
365 | #if 0 |
366 | /************************************************************************ | |
367 | * | |
368 | * Get string descriptor from device | |
369 | * | |
370 | ************************************************************************/ | |
03f0dbf7 AC |
371 | static int get_string_desc(struct usb_device *dev, int Id, |
372 | struct usb_string_descriptor **pRetDesc) | |
1da177e4 LT |
373 | { |
374 | struct usb_string_descriptor StringDesc; | |
375 | struct usb_string_descriptor *pStringDesc; | |
376 | ||
984f6868 | 377 | dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); |
1da177e4 | 378 | |
03f0dbf7 AC |
379 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
380 | sizeof(StringDesc))) | |
1da177e4 | 381 | return 0; |
1da177e4 | 382 | |
03f0dbf7 AC |
383 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
384 | if (!pStringDesc) | |
1da177e4 | 385 | return -1; |
1da177e4 | 386 | |
03f0dbf7 AC |
387 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
388 | StringDesc.bLength)) { | |
1da177e4 LT |
389 | kfree(pStringDesc); |
390 | return -1; | |
391 | } | |
392 | ||
393 | *pRetDesc = pStringDesc; | |
394 | return 0; | |
395 | } | |
396 | #endif | |
397 | ||
984f6868 GKH |
398 | static void dump_product_info(struct edgeport_serial *edge_serial, |
399 | struct edgeport_product_info *product_info) | |
6e8cf775 | 400 | { |
984f6868 GKH |
401 | struct device *dev = &edge_serial->serial->dev->dev; |
402 | ||
03f0dbf7 | 403 | /* Dump Product Info structure */ |
984f6868 GKH |
404 | dev_dbg(dev, "**Product Information:\n"); |
405 | dev_dbg(dev, " ProductId %x\n", product_info->ProductId); | |
406 | dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); | |
407 | dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); | |
408 | dev_dbg(dev, " IsServer %d\n", product_info->IsServer); | |
409 | dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); | |
410 | dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); | |
411 | dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); | |
412 | dev_dbg(dev, " RomSize %d\n", product_info->RomSize); | |
413 | dev_dbg(dev, " RamSize %d\n", product_info->RamSize); | |
414 | dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); | |
415 | dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); | |
416 | dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", | |
417 | product_info->BootMajorVersion, | |
418 | product_info->BootMinorVersion, | |
419 | le16_to_cpu(product_info->BootBuildNumber)); | |
420 | dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", | |
421 | product_info->FirmwareMajorVersion, | |
422 | product_info->FirmwareMinorVersion, | |
423 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
424 | dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", | |
425 | product_info->ManufactureDescDate[0], | |
426 | product_info->ManufactureDescDate[1], | |
427 | product_info->ManufactureDescDate[2]+1900); | |
428 | dev_dbg(dev, " iDownloadFile 0x%x\n", | |
429 | product_info->iDownloadFile); | |
430 | dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); | |
6e8cf775 GKH |
431 | } |
432 | ||
1da177e4 LT |
433 | static void get_product_info(struct edgeport_serial *edge_serial) |
434 | { | |
435 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
436 | ||
03f0dbf7 AC |
437 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
438 | ||
439 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
440 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
441 | product_info->ProdInfoVer = 0; | |
442 | ||
443 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
444 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
445 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
446 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
447 | ||
448 | product_info->BootMajorVersion = | |
449 | edge_serial->boot_descriptor.MajorVersion; | |
450 | product_info->BootMinorVersion = | |
451 | edge_serial->boot_descriptor.MinorVersion; | |
452 | product_info->BootBuildNumber = | |
453 | edge_serial->boot_descriptor.BuildNumber; | |
454 | ||
455 | memcpy(product_info->ManufactureDescDate, | |
456 | edge_serial->manuf_descriptor.DescDate, | |
457 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
458 | ||
459 | /* check if this is 2nd generation hardware */ | |
460 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
461 | & ION_DEVICE_ID_80251_NETCHIP) | |
462 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
463 | else | |
464 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
984f6868 | 465 | |
03f0dbf7 | 466 | /* Determine Product type and set appropriate flags */ |
1da177e4 | 467 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
468 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
469 | case ION_DEVICE_ID_EDGEPORT_4T: | |
470 | case ION_DEVICE_ID_EDGEPORT_4: | |
471 | case ION_DEVICE_ID_EDGEPORT_2: | |
472 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
473 | case ION_DEVICE_ID_EDGEPORT_8: | |
474 | case ION_DEVICE_ID_EDGEPORT_421: | |
475 | case ION_DEVICE_ID_EDGEPORT_21: | |
476 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
477 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
478 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
479 | product_info->IsRS232 = 1; | |
480 | break; | |
1da177e4 | 481 | |
03f0dbf7 AC |
482 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
483 | product_info->IsRS422 = 1; | |
484 | product_info->IsRS485 = 1; | |
485 | break; | |
1da177e4 | 486 | |
03f0dbf7 AC |
487 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
488 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
489 | product_info->IsRS422 = 1; | |
490 | break; | |
1da177e4 LT |
491 | } |
492 | ||
984f6868 | 493 | dump_product_info(edge_serial, product_info); |
6e8cf775 | 494 | } |
1da177e4 | 495 | |
6e8cf775 GKH |
496 | static int get_epic_descriptor(struct edgeport_serial *ep) |
497 | { | |
498 | int result; | |
499 | struct usb_serial *serial = ep->serial; | |
500 | struct edgeport_product_info *product_info = &ep->product_info; | |
501 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
502 | struct edge_compatibility_bits *bits; | |
984f6868 | 503 | struct device *dev = &serial->dev->dev; |
6e8cf775 GKH |
504 | |
505 | ep->is_epic = 0; | |
506 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
507 | USB_REQUEST_ION_GET_EPIC_DESC, | |
508 | 0xC0, 0x00, 0x00, | |
509 | &ep->epic_descriptor, | |
510 | sizeof(struct edge_compatibility_descriptor), | |
511 | 300); | |
512 | ||
6e8cf775 GKH |
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; | |
984f6868 | 526 | dump_product_info(ep, product_info); |
6e8cf775 GKH |
527 | |
528 | bits = &ep->epic_descriptor.Supports; | |
984f6868 GKH |
529 | dev_dbg(dev, "**EPIC descriptor:\n"); |
530 | dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
531 | dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); | |
532 | dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); | |
533 | dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); | |
534 | dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
535 | dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
536 | dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
537 | dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
538 | dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
539 | dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
540 | dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
541 | dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
542 | dev_dbg(dev, " TrueEdgeport : %s\n", 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 | { |
984f6868 GKH |
563 | struct edgeport_serial *edge_serial = urb->context; |
564 | struct device *dev; | |
1da177e4 LT |
565 | struct edgeport_port *edge_port; |
566 | struct usb_serial_port *port; | |
4a90f09b | 567 | struct tty_struct *tty; |
1da177e4 LT |
568 | unsigned char *data = urb->transfer_buffer; |
569 | int length = urb->actual_length; | |
570 | int bytes_avail; | |
571 | int position; | |
572 | int txCredits; | |
573 | int portNumber; | |
574 | int result; | |
2a393f5f | 575 | int status = urb->status; |
1da177e4 | 576 | |
2a393f5f | 577 | switch (status) { |
1da177e4 LT |
578 | case 0: |
579 | /* success */ | |
580 | break; | |
581 | case -ECONNRESET: | |
582 | case -ENOENT: | |
583 | case -ESHUTDOWN: | |
584 | /* this urb is terminated, clean up */ | |
984f6868 | 585 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); |
1da177e4 LT |
586 | return; |
587 | default: | |
984f6868 | 588 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); |
1da177e4 LT |
589 | goto exit; |
590 | } | |
591 | ||
984f6868 GKH |
592 | dev = &edge_serial->serial->dev->dev; |
593 | ||
03f0dbf7 | 594 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 595 | if (length) { |
59d33f2f | 596 | usb_serial_debug_data(dev, __func__, length, data); |
1da177e4 LT |
597 | |
598 | if (length > 1) { | |
599 | bytes_avail = data[0] | (data[1] << 8); | |
600 | if (bytes_avail) { | |
601 | spin_lock(&edge_serial->es_lock); | |
602 | edge_serial->rxBytesAvail += bytes_avail; | |
984f6868 GKH |
603 | dev_dbg(dev, |
604 | "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", | |
605 | __func__, bytes_avail, | |
606 | edge_serial->rxBytesAvail, | |
607 | edge_serial->read_in_progress); | |
1da177e4 LT |
608 | |
609 | if (edge_serial->rxBytesAvail > 0 && | |
610 | !edge_serial->read_in_progress) { | |
984f6868 | 611 | dev_dbg(dev, "%s - posting a read\n", __func__); |
cb8eaa8b | 612 | edge_serial->read_in_progress = true; |
1da177e4 | 613 | |
03f0dbf7 AC |
614 | /* we have pending bytes on the |
615 | bulk in pipe, send a request */ | |
1da177e4 LT |
616 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
617 | if (result) { | |
984f6868 GKH |
618 | dev_err(dev, |
619 | "%s - usb_submit_urb(read bulk) failed with result = %d\n", | |
620 | __func__, result); | |
cb8eaa8b | 621 | edge_serial->read_in_progress = false; |
1da177e4 LT |
622 | } |
623 | } | |
624 | spin_unlock(&edge_serial->es_lock); | |
625 | } | |
626 | } | |
627 | /* grab the txcredits for the ports if available */ | |
628 | position = 2; | |
629 | portNumber = 0; | |
03f0dbf7 AC |
630 | while ((position < length) && |
631 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
632 | txCredits = data[position] | (data[position+1] << 8); |
633 | if (txCredits) { | |
634 | port = edge_serial->serial->port[portNumber]; | |
635 | edge_port = usb_get_serial_port_data(port); | |
636 | if (edge_port->open) { | |
637 | spin_lock(&edge_port->ep_lock); | |
638 | edge_port->txCredits += txCredits; | |
639 | spin_unlock(&edge_port->ep_lock); | |
984f6868 GKH |
640 | dev_dbg(dev, "%s - txcredits for port%d = %d\n", |
641 | __func__, portNumber, | |
642 | edge_port->txCredits); | |
1da177e4 | 643 | |
03f0dbf7 AC |
644 | /* tell the tty driver that something |
645 | has changed */ | |
4a90f09b AC |
646 | tty = tty_port_tty_get( |
647 | &edge_port->port->port); | |
648 | if (tty) { | |
649 | tty_wakeup(tty); | |
650 | tty_kref_put(tty); | |
651 | } | |
03f0dbf7 AC |
652 | /* Since we have more credit, check |
653 | if more data can be sent */ | |
654 | send_more_port_data(edge_serial, | |
655 | edge_port); | |
1da177e4 LT |
656 | } |
657 | } | |
658 | position += 2; | |
659 | ++portNumber; | |
660 | } | |
661 | } | |
662 | ||
663 | exit: | |
03f0dbf7 AC |
664 | result = usb_submit_urb(urb, GFP_ATOMIC); |
665 | if (result) | |
666 | dev_err(&urb->dev->dev, | |
667 | "%s - Error %d submitting control urb\n", | |
668 | __func__, result); | |
1da177e4 LT |
669 | } |
670 | ||
671 | ||
672 | /***************************************************************************** | |
673 | * edge_bulk_in_callback | |
03f0dbf7 | 674 | * this is the callback function for when we have received data on the |
1da177e4 LT |
675 | * bulk in endpoint. |
676 | *****************************************************************************/ | |
03f0dbf7 | 677 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 678 | { |
cdc97792 | 679 | struct edgeport_serial *edge_serial = urb->context; |
984f6868 | 680 | struct device *dev; |
1da177e4 | 681 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 682 | int retval; |
1da177e4 | 683 | __u16 raw_data_length; |
2a393f5f | 684 | int status = urb->status; |
1da177e4 | 685 | |
2a393f5f | 686 | if (status) { |
984f6868 GKH |
687 | dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
688 | __func__, status); | |
cb8eaa8b | 689 | edge_serial->read_in_progress = false; |
1da177e4 LT |
690 | return; |
691 | } | |
692 | ||
693 | if (urb->actual_length == 0) { | |
984f6868 | 694 | dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); |
cb8eaa8b | 695 | edge_serial->read_in_progress = false; |
1da177e4 LT |
696 | return; |
697 | } | |
698 | ||
984f6868 | 699 | dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
700 | raw_data_length = urb->actual_length; |
701 | ||
59d33f2f | 702 | usb_serial_debug_data(dev, __func__, raw_data_length, data); |
1da177e4 LT |
703 | |
704 | spin_lock(&edge_serial->es_lock); | |
705 | ||
706 | /* decrement our rxBytes available by the number that we just got */ | |
707 | edge_serial->rxBytesAvail -= raw_data_length; | |
708 | ||
984f6868 GKH |
709 | dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, |
710 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 711 | |
03f0dbf7 | 712 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
713 | |
714 | /* check to see if there's any more data for us to read */ | |
715 | if (edge_serial->rxBytesAvail > 0) { | |
984f6868 | 716 | dev_dbg(dev, "%s - posting a read\n", __func__); |
2a393f5f GKH |
717 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
718 | if (retval) { | |
984f6868 GKH |
719 | dev_err(dev, |
720 | "%s - usb_submit_urb(read bulk) failed, retval = %d\n", | |
721 | __func__, retval); | |
cb8eaa8b | 722 | edge_serial->read_in_progress = false; |
1da177e4 LT |
723 | } |
724 | } else { | |
cb8eaa8b | 725 | edge_serial->read_in_progress = false; |
1da177e4 LT |
726 | } |
727 | ||
728 | spin_unlock(&edge_serial->es_lock); | |
729 | } | |
730 | ||
731 | ||
732 | /***************************************************************************** | |
733 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
734 | * this is the callback function for when we have finished sending |
735 | * serial data on the bulk out endpoint. | |
1da177e4 | 736 | *****************************************************************************/ |
03f0dbf7 | 737 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 738 | { |
cdc97792 | 739 | struct edgeport_port *edge_port = urb->context; |
1da177e4 | 740 | struct tty_struct *tty; |
2a393f5f | 741 | int status = urb->status; |
1da177e4 | 742 | |
2a393f5f | 743 | if (status) { |
984f6868 GKH |
744 | dev_dbg(&urb->dev->dev, |
745 | "%s - nonzero write bulk status received: %d\n", | |
746 | __func__, status); | |
1da177e4 LT |
747 | } |
748 | ||
4a90f09b | 749 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
750 | |
751 | if (tty && edge_port->open) { | |
03f0dbf7 AC |
752 | /* let the tty driver wakeup if it has a special |
753 | write_wakeup function */ | |
1da177e4 LT |
754 | tty_wakeup(tty); |
755 | } | |
4a90f09b | 756 | tty_kref_put(tty); |
1da177e4 | 757 | |
03f0dbf7 | 758 | /* Release the Write URB */ |
cb8eaa8b | 759 | edge_port->write_in_progress = false; |
1da177e4 | 760 | |
03f0dbf7 AC |
761 | /* Check if more data needs to be sent */ |
762 | send_more_port_data((struct edgeport_serial *) | |
763 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
764 | } |
765 | ||
766 | ||
767 | /***************************************************************************** | |
768 | * BulkOutCmdCallback | |
03f0dbf7 AC |
769 | * this is the callback function for when we have finished sending a |
770 | * command on the bulk out endpoint. | |
1da177e4 | 771 | *****************************************************************************/ |
03f0dbf7 | 772 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 773 | { |
cdc97792 | 774 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
775 | struct tty_struct *tty; |
776 | int status = urb->status; | |
777 | ||
96c706ed | 778 | atomic_dec(&CmdUrbs); |
984f6868 GKH |
779 | dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", |
780 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
781 | |
782 | ||
783 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 784 | kfree(urb->transfer_buffer); |
1da177e4 LT |
785 | |
786 | /* Free the command urb */ | |
03f0dbf7 | 787 | usb_free_urb(urb); |
1da177e4 LT |
788 | |
789 | if (status) { | |
984f6868 GKH |
790 | dev_dbg(&urb->dev->dev, |
791 | "%s - nonzero write bulk status received: %d\n", | |
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); | |
984f6868 | 823 | struct device *dev = &port->dev; |
1da177e4 LT |
824 | struct usb_serial *serial; |
825 | struct edgeport_serial *edge_serial; | |
826 | int response; | |
827 | ||
1da177e4 LT |
828 | if (edge_port == NULL) |
829 | return -ENODEV; | |
830 | ||
03f0dbf7 AC |
831 | /* see if we've set up our endpoint info yet (can't set it up |
832 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
833 | serial = port->serial; |
834 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 835 | if (edge_serial == NULL) |
1da177e4 | 836 | return -ENODEV; |
1da177e4 LT |
837 | if (edge_serial->interrupt_in_buffer == NULL) { |
838 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 839 | |
1da177e4 | 840 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
841 | edge_serial->interrupt_in_buffer = |
842 | port0->interrupt_in_buffer; | |
843 | edge_serial->interrupt_in_endpoint = | |
844 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
845 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
846 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
847 | edge_serial->bulk_in_endpoint = |
848 | port0->bulk_in_endpointAddress; | |
1da177e4 | 849 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
850 | edge_serial->bulk_out_endpoint = |
851 | port0->bulk_out_endpointAddress; | |
852 | ||
1da177e4 LT |
853 | /* set up our interrupt urb */ |
854 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
855 | serial->dev, |
856 | usb_rcvintpipe(serial->dev, | |
857 | port0->interrupt_in_endpointAddress), | |
858 | port0->interrupt_in_buffer, | |
859 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
860 | edge_interrupt_callback, edge_serial, | |
861 | edge_serial->interrupt_read_urb->interval); | |
862 | ||
1da177e4 LT |
863 | /* set up our bulk in urb */ |
864 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
865 | usb_rcvbulkpipe(serial->dev, |
866 | port0->bulk_in_endpointAddress), | |
867 | port0->bulk_in_buffer, | |
868 | edge_serial->read_urb->transfer_buffer_length, | |
869 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 870 | edge_serial->read_in_progress = false; |
1da177e4 LT |
871 | |
872 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
873 | * this interrupt will continue as long |
874 | * as the edgeport is connected */ | |
875 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
876 | GFP_KERNEL); | |
1da177e4 | 877 | if (response) { |
984f6868 GKH |
878 | dev_err(dev, "%s - Error %d submitting control urb\n", |
879 | __func__, response); | |
1da177e4 LT |
880 | } |
881 | } | |
03f0dbf7 | 882 | |
1da177e4 LT |
883 | /* initialize our wait queues */ |
884 | init_waitqueue_head(&edge_port->wait_open); | |
885 | init_waitqueue_head(&edge_port->wait_chase); | |
1da177e4 LT |
886 | init_waitqueue_head(&edge_port->wait_command); |
887 | ||
888 | /* initialize our icount structure */ | |
03f0dbf7 | 889 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1da177e4 LT |
890 | |
891 | /* initialize our port settings */ | |
03f0dbf7 AC |
892 | edge_port->txCredits = 0; /* Can't send any data yet */ |
893 | /* Must always set this bit to enable ints! */ | |
894 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 895 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
896 | |
897 | /* send a open port command */ | |
cb8eaa8b RK |
898 | edge_port->openPending = true; |
899 | edge_port->open = false; | |
03f0dbf7 | 900 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
901 | |
902 | if (response < 0) { | |
984f6868 | 903 | dev_err(dev, "%s - error sending open port command\n", __func__); |
cb8eaa8b | 904 | edge_port->openPending = false; |
1da177e4 LT |
905 | return -ENODEV; |
906 | } | |
907 | ||
908 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
909 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
910 | OPEN_TIMEOUT); | |
1da177e4 | 911 | |
cb8eaa8b | 912 | if (!edge_port->open) { |
1da177e4 | 913 | /* open timed out */ |
984f6868 | 914 | dev_dbg(dev, "%s - open timedout\n", __func__); |
cb8eaa8b | 915 | edge_port->openPending = false; |
1da177e4 LT |
916 | return -ENODEV; |
917 | } | |
918 | ||
919 | /* create the txfifo */ | |
920 | edge_port->txfifo.head = 0; | |
921 | edge_port->txfifo.tail = 0; | |
922 | edge_port->txfifo.count = 0; | |
923 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 924 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
925 | |
926 | if (!edge_port->txfifo.fifo) { | |
984f6868 | 927 | dev_dbg(dev, "%s - no memory\n", __func__); |
335f8514 | 928 | edge_close(port); |
1da177e4 LT |
929 | return -ENOMEM; |
930 | } | |
931 | ||
932 | /* Allocate a URB for the write */ | |
03f0dbf7 | 933 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 934 | edge_port->write_in_progress = false; |
1da177e4 LT |
935 | |
936 | if (!edge_port->write_urb) { | |
984f6868 | 937 | dev_dbg(dev, "%s - no memory\n", __func__); |
335f8514 | 938 | edge_close(port); |
1da177e4 LT |
939 | return -ENOMEM; |
940 | } | |
941 | ||
984f6868 GKH |
942 | dev_dbg(dev, "%s(%d) - Initialize TX fifo to %d bytes\n", |
943 | __func__, port->number, edge_port->maxTxCredits); | |
1da177e4 LT |
944 | |
945 | return 0; | |
946 | } | |
947 | ||
948 | ||
949 | /************************************************************************ | |
950 | * | |
951 | * block_until_chase_response | |
952 | * | |
953 | * This function will block the close until one of the following: | |
954 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 955 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
956 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
957 | * | |
958 | ************************************************************************/ | |
959 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
960 | { | |
984f6868 | 961 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
962 | DEFINE_WAIT(wait); |
963 | __u16 lastCredits; | |
964 | int timeout = 1*HZ; | |
965 | int loop = 10; | |
966 | ||
967 | while (1) { | |
03f0dbf7 | 968 | /* Save Last credits */ |
1da177e4 LT |
969 | lastCredits = edge_port->txCredits; |
970 | ||
03f0dbf7 | 971 | /* Did we get our Chase response */ |
cb8eaa8b | 972 | if (!edge_port->chaseResponsePending) { |
984f6868 | 973 | dev_dbg(dev, "%s - Got Chase Response\n", __func__); |
1da177e4 | 974 | |
03f0dbf7 AC |
975 | /* did we get all of our credit back? */ |
976 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
984f6868 | 977 | dev_dbg(dev, "%s - Got all credits\n", __func__); |
1da177e4 LT |
978 | return; |
979 | } | |
980 | } | |
981 | ||
03f0dbf7 AC |
982 | /* Block the thread for a while */ |
983 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
984 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
985 | schedule_timeout(timeout); |
986 | finish_wait(&edge_port->wait_chase, &wait); | |
987 | ||
988 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 989 | /* No activity.. count down. */ |
1da177e4 LT |
990 | loop--; |
991 | if (loop == 0) { | |
cb8eaa8b | 992 | edge_port->chaseResponsePending = false; |
984f6868 | 993 | dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); |
1da177e4 LT |
994 | return; |
995 | } | |
996 | } else { | |
03f0dbf7 | 997 | /* Reset timeout value back to 10 seconds */ |
984f6868 | 998 | dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, |
03f0dbf7 | 999 | lastCredits, edge_port->txCredits); |
1da177e4 LT |
1000 | loop = 10; |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | ||
1006 | /************************************************************************ | |
1007 | * | |
1008 | * block_until_tx_empty | |
1009 | * | |
1010 | * This function will block the close until one of the following: | |
1011 | * 1. TX count are 0 | |
1012 | * 2. The edgeport has stopped | |
dc0d5c1e | 1013 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
1014 | * |
1015 | ************************************************************************/ | |
03f0dbf7 | 1016 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 | 1017 | { |
984f6868 | 1018 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1019 | DEFINE_WAIT(wait); |
1020 | struct TxFifo *fifo = &edge_port->txfifo; | |
1021 | __u32 lastCount; | |
1022 | int timeout = HZ/10; | |
1023 | int loop = 30; | |
1024 | ||
1025 | while (1) { | |
03f0dbf7 | 1026 | /* Save Last count */ |
1da177e4 LT |
1027 | lastCount = fifo->count; |
1028 | ||
03f0dbf7 | 1029 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1030 | if (lastCount == 0) { |
984f6868 | 1031 | dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); |
1da177e4 LT |
1032 | return; |
1033 | } | |
1034 | ||
03f0dbf7 AC |
1035 | /* Block the thread for a while */ |
1036 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1037 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1038 | schedule_timeout(timeout); |
1039 | finish_wait(&edge_port->wait_chase, &wait); | |
1040 | ||
984f6868 | 1041 | dev_dbg(dev, "%s wait\n", __func__); |
1da177e4 LT |
1042 | |
1043 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1044 | /* No activity.. count down. */ |
1da177e4 LT |
1045 | loop--; |
1046 | if (loop == 0) { | |
984f6868 | 1047 | dev_dbg(dev, "%s - TIMEOUT\n", __func__); |
1da177e4 LT |
1048 | return; |
1049 | } | |
1050 | } else { | |
03f0dbf7 | 1051 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1052 | loop = 30; |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | ||
1058 | /***************************************************************************** | |
1059 | * edge_close | |
1060 | * this function is called by the tty driver when a port is closed | |
1061 | *****************************************************************************/ | |
335f8514 | 1062 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1063 | { |
1064 | struct edgeport_serial *edge_serial; | |
1065 | struct edgeport_port *edge_port; | |
1066 | int status; | |
1067 | ||
1da177e4 LT |
1068 | edge_serial = usb_get_serial_data(port->serial); |
1069 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1070 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1071 | return; |
03f0dbf7 AC |
1072 | |
1073 | /* block until tx is empty */ | |
1da177e4 LT |
1074 | block_until_tx_empty(edge_port); |
1075 | ||
cb8eaa8b | 1076 | edge_port->closePending = true; |
1da177e4 | 1077 | |
6e8cf775 GKH |
1078 | if ((!edge_serial->is_epic) || |
1079 | ((edge_serial->is_epic) && | |
1080 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1081 | /* flush and chase */ | |
cb8eaa8b | 1082 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1083 | |
984f6868 | 1084 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 AC |
1085 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1086 | if (status == 0) | |
1087 | /* block until chase finished */ | |
6e8cf775 | 1088 | block_until_chase_response(edge_port); |
03f0dbf7 | 1089 | else |
cb8eaa8b | 1090 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1091 | } |
1092 | ||
6e8cf775 GKH |
1093 | if ((!edge_serial->is_epic) || |
1094 | ((edge_serial->is_epic) && | |
1095 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1096 | /* close the port */ | |
984f6868 | 1097 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); |
03f0dbf7 | 1098 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1099 | } |
1da177e4 | 1100 | |
03f0dbf7 | 1101 | /* port->close = true; */ |
cb8eaa8b RK |
1102 | edge_port->closePending = false; |
1103 | edge_port->open = false; | |
1104 | edge_port->openPending = false; | |
1da177e4 | 1105 | |
9a25f44f | 1106 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1107 | |
1108 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1109 | /* if this urb had a transfer buffer already |
1110 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1111 | kfree(edge_port->write_urb->transfer_buffer); |
1112 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1113 | edge_port->write_urb = NULL; |
1114 | } | |
1bc3c9e1 JJ |
1115 | kfree(edge_port->txfifo.fifo); |
1116 | edge_port->txfifo.fifo = NULL; | |
03f0dbf7 | 1117 | } |
1da177e4 LT |
1118 | |
1119 | /***************************************************************************** | |
1120 | * SerialWrite | |
03f0dbf7 AC |
1121 | * this function is called by the tty driver when data should be written |
1122 | * to the port. | |
1123 | * If successful, we return the number of bytes written, otherwise we | |
1124 | * return a negative error number. | |
1da177e4 | 1125 | *****************************************************************************/ |
95da310e AC |
1126 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1127 | const unsigned char *data, int count) | |
1da177e4 LT |
1128 | { |
1129 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1130 | struct TxFifo *fifo; | |
1131 | int copySize; | |
1132 | int bytesleft; | |
1133 | int firsthalf; | |
1134 | int secondhalf; | |
1135 | unsigned long flags; | |
1136 | ||
1da177e4 LT |
1137 | if (edge_port == NULL) |
1138 | return -ENODEV; | |
1139 | ||
03f0dbf7 | 1140 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1141 | fifo = &edge_port->txfifo; |
1142 | ||
1143 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1144 | ||
03f0dbf7 AC |
1145 | /* calculate number of bytes to put in fifo */ |
1146 | copySize = min((unsigned int)count, | |
1147 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1148 | |
984f6868 GKH |
1149 | dev_dbg(&port->dev, "%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes\n", |
1150 | __func__, port->number, count, | |
03f0dbf7 | 1151 | edge_port->txCredits - fifo->count, copySize); |
1da177e4 | 1152 | |
03f0dbf7 AC |
1153 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1154 | and when txCredits is empty */ | |
1da177e4 | 1155 | if (copySize == 0) { |
984f6868 | 1156 | dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); |
1da177e4 LT |
1157 | goto finish_write; |
1158 | } | |
1159 | ||
03f0dbf7 AC |
1160 | /* queue the data |
1161 | * since we can never overflow the buffer we do not have to check for a | |
1162 | * full condition | |
1163 | * | |
1164 | * the copy is done is two parts -- first fill to the end of the buffer | |
1165 | * then copy the reset from the start of the buffer | |
1166 | */ | |
1da177e4 | 1167 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 | 1168 | firsthalf = min(bytesleft, copySize); |
984f6868 GKH |
1169 | dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, |
1170 | firsthalf, bytesleft); | |
1da177e4 LT |
1171 | |
1172 | /* now copy our data */ | |
1173 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
59d33f2f | 1174 | usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); |
1da177e4 | 1175 | |
03f0dbf7 | 1176 | /* update the index and size */ |
1da177e4 LT |
1177 | fifo->head += firsthalf; |
1178 | fifo->count += firsthalf; | |
1179 | ||
03f0dbf7 AC |
1180 | /* wrap the index */ |
1181 | if (fifo->head == fifo->size) | |
1da177e4 | 1182 | fifo->head = 0; |
1da177e4 LT |
1183 | |
1184 | secondhalf = copySize-firsthalf; | |
1185 | ||
1186 | if (secondhalf) { | |
984f6868 | 1187 | dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); |
1da177e4 | 1188 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
59d33f2f | 1189 | usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); |
03f0dbf7 | 1190 | /* update the index and size */ |
1da177e4 LT |
1191 | fifo->count += secondhalf; |
1192 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1193 | /* No need to check for wrap since we can not get to end of |
1194 | * the fifo in this part | |
1195 | */ | |
1da177e4 LT |
1196 | } |
1197 | ||
1198 | finish_write: | |
1199 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1200 | ||
03f0dbf7 AC |
1201 | send_more_port_data((struct edgeport_serial *) |
1202 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1203 | |
984f6868 GKH |
1204 | dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", |
1205 | __func__, copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1206 | |
03f0dbf7 | 1207 | return copySize; |
1da177e4 LT |
1208 | } |
1209 | ||
1210 | ||
1211 | /************************************************************************ | |
1212 | * | |
1213 | * send_more_port_data() | |
1214 | * | |
1215 | * This routine attempts to write additional UART transmit data | |
1216 | * to a port over the USB bulk pipe. It is called (1) when new | |
1217 | * data has been written to a port's TxBuffer from higher layers | |
1218 | * (2) when the peripheral sends us additional TxCredits indicating | |
1219 | * that it can accept more Tx data for a given port; and (3) when | |
1220 | * a bulk write completes successfully and we want to see if we | |
1221 | * can transmit more. | |
1222 | * | |
1223 | ************************************************************************/ | |
03f0dbf7 AC |
1224 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1225 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1226 | { |
1227 | struct TxFifo *fifo = &edge_port->txfifo; | |
984f6868 | 1228 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1229 | struct urb *urb; |
1230 | unsigned char *buffer; | |
1231 | int status; | |
1232 | int count; | |
1233 | int bytesleft; | |
1234 | int firsthalf; | |
1235 | int secondhalf; | |
1236 | unsigned long flags; | |
1237 | ||
1da177e4 LT |
1238 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1239 | ||
1240 | if (edge_port->write_in_progress || | |
1241 | !edge_port->open || | |
1242 | (fifo->count == 0)) { | |
984f6868 GKH |
1243 | dev_dbg(dev, "%s(%d) EXIT - fifo %d, PendingWrite = %d\n", |
1244 | __func__, edge_port->port->number, | |
1245 | fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1246 | goto exit_send; |
1247 | } | |
1248 | ||
03f0dbf7 AC |
1249 | /* since the amount of data in the fifo will always fit into the |
1250 | * edgeport buffer we do not need to check the write length | |
1251 | * | |
1252 | * Do we have enough credits for this port to make it worthwhile | |
1253 | * to bother queueing a write. If it's too small, say a few bytes, | |
1254 | * it's better to wait for more credits so we can do a larger write. | |
1255 | */ | |
1256 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
984f6868 | 1257 | dev_dbg(dev, "%s(%d) Not enough credit - fifo %d TxCredit %d\n", |
03f0dbf7 AC |
1258 | __func__, edge_port->port->number, fifo->count, |
1259 | edge_port->txCredits); | |
1da177e4 LT |
1260 | goto exit_send; |
1261 | } | |
1262 | ||
03f0dbf7 | 1263 | /* lock this write */ |
cb8eaa8b | 1264 | edge_port->write_in_progress = true; |
1da177e4 | 1265 | |
03f0dbf7 | 1266 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1267 | urb = edge_port->write_urb; |
1268 | ||
1bc3c9e1 JJ |
1269 | /* make sure transfer buffer is freed */ |
1270 | kfree(urb->transfer_buffer); | |
1271 | urb->transfer_buffer = NULL; | |
1da177e4 | 1272 | |
03f0dbf7 AC |
1273 | /* build the data header for the buffer and port that we are about |
1274 | to send out */ | |
1da177e4 | 1275 | count = fifo->count; |
03f0dbf7 | 1276 | buffer = kmalloc(count+2, GFP_ATOMIC); |
1da177e4 | 1277 | if (buffer == NULL) { |
22a416c4 | 1278 | dev_err_console(edge_port->port, |
03f0dbf7 | 1279 | "%s - no more kernel memory...\n", __func__); |
cb8eaa8b | 1280 | edge_port->write_in_progress = false; |
1da177e4 LT |
1281 | goto exit_send; |
1282 | } | |
03f0dbf7 AC |
1283 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number |
1284 | - edge_port->port->serial->minor, count); | |
1285 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number | |
1286 | - edge_port->port->serial->minor, count); | |
1da177e4 LT |
1287 | |
1288 | /* now copy our data */ | |
1289 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1290 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1291 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1292 | fifo->tail += firsthalf; | |
1293 | fifo->count -= firsthalf; | |
03f0dbf7 | 1294 | if (fifo->tail == fifo->size) |
1da177e4 | 1295 | fifo->tail = 0; |
1da177e4 LT |
1296 | |
1297 | secondhalf = count-firsthalf; | |
1298 | if (secondhalf) { | |
03f0dbf7 AC |
1299 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1300 | secondhalf); | |
1da177e4 LT |
1301 | fifo->tail += secondhalf; |
1302 | fifo->count -= secondhalf; | |
1303 | } | |
1304 | ||
1305 | if (count) | |
59d33f2f | 1306 | usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); |
1da177e4 LT |
1307 | |
1308 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1309 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1310 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1311 | edge_serial->bulk_out_endpoint), | |
1312 | buffer, count+2, | |
1313 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1314 | |
1315 | /* decrement the number of credits we have by the number we just sent */ | |
1316 | edge_port->txCredits -= count; | |
1317 | edge_port->icount.tx += count; | |
1318 | ||
1da177e4 LT |
1319 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1320 | if (status) { | |
1321 | /* something went wrong */ | |
22a416c4 | 1322 | dev_err_console(edge_port->port, |
03f0dbf7 AC |
1323 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", |
1324 | __func__, status); | |
cb8eaa8b | 1325 | edge_port->write_in_progress = false; |
1da177e4 LT |
1326 | |
1327 | /* revert the credits as something bad happened. */ | |
1328 | edge_port->txCredits += count; | |
1329 | edge_port->icount.tx -= count; | |
1330 | } | |
984f6868 GKH |
1331 | dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", |
1332 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1333 | |
1334 | exit_send: | |
1335 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1336 | } | |
1337 | ||
1338 | ||
1339 | /***************************************************************************** | |
1340 | * edge_write_room | |
03f0dbf7 AC |
1341 | * this function is called by the tty driver when it wants to know how |
1342 | * many bytes of data we can accept for a specific port. If successful, | |
1343 | * we return the amount of room that we have for this port (the txCredits) | |
1344 | * otherwise we return a negative error number. | |
1da177e4 | 1345 | *****************************************************************************/ |
95da310e | 1346 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1347 | { |
95da310e | 1348 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1349 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1350 | int room; | |
1351 | unsigned long flags; | |
1352 | ||
1da177e4 | 1353 | if (edge_port == NULL) |
d76f2f44 | 1354 | return 0; |
cb8eaa8b | 1355 | if (edge_port->closePending) |
d76f2f44 | 1356 | return 0; |
1da177e4 | 1357 | |
1da177e4 | 1358 | if (!edge_port->open) { |
984f6868 | 1359 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1360 | return 0; |
1da177e4 LT |
1361 | } |
1362 | ||
03f0dbf7 | 1363 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1364 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1365 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1366 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1367 | ||
984f6868 | 1368 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
1da177e4 LT |
1369 | return room; |
1370 | } | |
1371 | ||
1372 | ||
1373 | /***************************************************************************** | |
1374 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1375 | * this function is called by the tty driver when it wants to know how |
1376 | * many bytes of data we currently have outstanding in the port (data that | |
1377 | * has been written, but hasn't made it out the port yet) | |
1378 | * If successful, we return the number of bytes left to be written in the | |
1379 | * system, | |
1da177e4 LT |
1380 | * Otherwise we return a negative error number. |
1381 | *****************************************************************************/ | |
95da310e | 1382 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1383 | { |
95da310e | 1384 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1385 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1386 | int num_chars; | |
1387 | unsigned long flags; | |
1388 | ||
1da177e4 | 1389 | if (edge_port == NULL) |
d76f2f44 | 1390 | return 0; |
cb8eaa8b | 1391 | if (edge_port->closePending) |
d76f2f44 | 1392 | return 0; |
1da177e4 LT |
1393 | |
1394 | if (!edge_port->open) { | |
984f6868 | 1395 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1396 | return 0; |
1da177e4 LT |
1397 | } |
1398 | ||
1399 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1400 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1401 | edge_port->txfifo.count; | |
1da177e4 LT |
1402 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1403 | if (num_chars) { | |
984f6868 GKH |
1404 | dev_dbg(&port->dev, "%s(port %d) - returns %d\n", __func__, |
1405 | port->number, num_chars); | |
1da177e4 LT |
1406 | } |
1407 | ||
1408 | return num_chars; | |
1409 | } | |
1410 | ||
1411 | ||
1412 | /***************************************************************************** | |
1413 | * SerialThrottle | |
1414 | * this function is called by the tty driver when it wants to stop the data | |
1415 | * being read from the port. | |
1416 | *****************************************************************************/ | |
95da310e | 1417 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1418 | { |
95da310e | 1419 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1420 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1421 | int status; |
1422 | ||
1da177e4 LT |
1423 | if (edge_port == NULL) |
1424 | return; | |
1425 | ||
1426 | if (!edge_port->open) { | |
984f6868 | 1427 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1428 | return; |
1429 | } | |
1430 | ||
1da177e4 LT |
1431 | /* if we are implementing XON/XOFF, send the stop character */ |
1432 | if (I_IXOFF(tty)) { | |
1433 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1434 | status = edge_write(tty, port, &stop_char, 1); |
1435 | if (status <= 0) | |
1da177e4 | 1436 | return; |
1da177e4 LT |
1437 | } |
1438 | ||
1439 | /* if we are implementing RTS/CTS, toggle that line */ | |
adc8d746 | 1440 | if (tty->termios.c_cflag & CRTSCTS) { |
1da177e4 | 1441 | edge_port->shadowMCR &= ~MCR_RTS; |
03f0dbf7 AC |
1442 | status = send_cmd_write_uart_register(edge_port, MCR, |
1443 | edge_port->shadowMCR); | |
1444 | if (status != 0) | |
1da177e4 | 1445 | return; |
1da177e4 | 1446 | } |
1da177e4 LT |
1447 | } |
1448 | ||
1449 | ||
1450 | /***************************************************************************** | |
1451 | * edge_unthrottle | |
03f0dbf7 AC |
1452 | * this function is called by the tty driver when it wants to resume the |
1453 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1454 | *****************************************************************************/ |
95da310e | 1455 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1456 | { |
95da310e | 1457 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1458 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1459 | int status; |
1460 | ||
1da177e4 LT |
1461 | if (edge_port == NULL) |
1462 | return; | |
1463 | ||
1464 | if (!edge_port->open) { | |
984f6868 | 1465 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1466 | return; |
1467 | } | |
1468 | ||
1da177e4 LT |
1469 | /* if we are implementing XON/XOFF, send the start character */ |
1470 | if (I_IXOFF(tty)) { | |
1471 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1472 | status = edge_write(tty, port, &start_char, 1); |
1473 | if (status <= 0) | |
1da177e4 | 1474 | return; |
1da177e4 | 1475 | } |
1da177e4 | 1476 | /* if we are implementing RTS/CTS, toggle that line */ |
adc8d746 | 1477 | if (tty->termios.c_cflag & CRTSCTS) { |
1da177e4 | 1478 | edge_port->shadowMCR |= MCR_RTS; |
03f0dbf7 AC |
1479 | send_cmd_write_uart_register(edge_port, MCR, |
1480 | edge_port->shadowMCR); | |
1da177e4 | 1481 | } |
1da177e4 LT |
1482 | } |
1483 | ||
1484 | ||
1485 | /***************************************************************************** | |
1486 | * SerialSetTermios | |
03f0dbf7 AC |
1487 | * this function is called by the tty driver when it wants to change |
1488 | * the termios structure | |
1da177e4 | 1489 | *****************************************************************************/ |
95da310e AC |
1490 | static void edge_set_termios(struct tty_struct *tty, |
1491 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1492 | { |
1493 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1494 | unsigned int cflag; |
1495 | ||
adc8d746 | 1496 | cflag = tty->termios.c_cflag; |
d9a80746 | 1497 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag); |
984f6868 | 1498 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag); |
1da177e4 LT |
1499 | |
1500 | if (edge_port == NULL) | |
1501 | return; | |
1502 | ||
1503 | if (!edge_port->open) { | |
984f6868 | 1504 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1505 | return; |
1506 | } | |
1507 | ||
1508 | /* change the port settings to the new ones specified */ | |
95da310e | 1509 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1510 | } |
1511 | ||
1512 | ||
1513 | /***************************************************************************** | |
1514 | * get_lsr_info - get line status register info | |
1515 | * | |
1516 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1517 | * is emptied. On bus types like RS485, the transmitter must | |
1518 | * release the bus after transmitting. This must be done when | |
1519 | * the transmit shift register is empty, not be done when the | |
1520 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1521 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1522 | *****************************************************************************/ |
03f0dbf7 AC |
1523 | static int get_lsr_info(struct edgeport_port *edge_port, |
1524 | unsigned int __user *value) | |
1da177e4 LT |
1525 | { |
1526 | unsigned int result = 0; | |
1527 | unsigned long flags; | |
1528 | ||
1529 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1530 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1531 | edge_port->txfifo.count == 0) { | |
984f6868 | 1532 | dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); |
1da177e4 LT |
1533 | result = TIOCSER_TEMT; |
1534 | } | |
1535 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1536 | ||
1537 | if (copy_to_user(value, &result, sizeof(int))) | |
1538 | return -EFAULT; | |
1539 | return 0; | |
1540 | } | |
1541 | ||
20b9d177 | 1542 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 1543 | unsigned int set, unsigned int clear) |
1da177e4 | 1544 | { |
95da310e | 1545 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1546 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1547 | unsigned int mcr; | |
1548 | ||
1da177e4 LT |
1549 | mcr = edge_port->shadowMCR; |
1550 | if (set & TIOCM_RTS) | |
1551 | mcr |= MCR_RTS; | |
1552 | if (set & TIOCM_DTR) | |
1553 | mcr |= MCR_DTR; | |
1554 | if (set & TIOCM_LOOP) | |
1555 | mcr |= MCR_LOOPBACK; | |
1556 | ||
1557 | if (clear & TIOCM_RTS) | |
1558 | mcr &= ~MCR_RTS; | |
1559 | if (clear & TIOCM_DTR) | |
1560 | mcr &= ~MCR_DTR; | |
1561 | if (clear & TIOCM_LOOP) | |
1562 | mcr &= ~MCR_LOOPBACK; | |
1563 | ||
1564 | edge_port->shadowMCR = mcr; | |
1565 | ||
1566 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1567 | ||
1568 | return 0; | |
1569 | } | |
1570 | ||
60b33c13 | 1571 | static int edge_tiocmget(struct tty_struct *tty) |
1da177e4 | 1572 | { |
95da310e | 1573 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1574 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1575 | unsigned int result = 0; | |
1576 | unsigned int msr; | |
1577 | unsigned int mcr; | |
1578 | ||
1da177e4 LT |
1579 | msr = edge_port->shadowMSR; |
1580 | mcr = edge_port->shadowMCR; | |
1581 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1582 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1583 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1584 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1585 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1586 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1587 | ||
1da177e4 LT |
1588 | return result; |
1589 | } | |
1590 | ||
0bca1b91 AC |
1591 | static int edge_get_icount(struct tty_struct *tty, |
1592 | struct serial_icounter_struct *icount) | |
1593 | { | |
1594 | struct usb_serial_port *port = tty->driver_data; | |
1595 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1596 | struct async_icount cnow; | |
1597 | cnow = edge_port->icount; | |
1598 | ||
1599 | icount->cts = cnow.cts; | |
1600 | icount->dsr = cnow.dsr; | |
1601 | icount->rng = cnow.rng; | |
1602 | icount->dcd = cnow.dcd; | |
1603 | icount->rx = cnow.rx; | |
1604 | icount->tx = cnow.tx; | |
1605 | icount->frame = cnow.frame; | |
1606 | icount->overrun = cnow.overrun; | |
1607 | icount->parity = cnow.parity; | |
1608 | icount->brk = cnow.brk; | |
1609 | icount->buf_overrun = cnow.buf_overrun; | |
1610 | ||
984f6868 GKH |
1611 | dev_dbg(&port->dev, "%s (%d) TIOCGICOUNT RX=%d, TX=%d\n", __func__, |
1612 | port->number, icount->rx, icount->tx); | |
0bca1b91 AC |
1613 | return 0; |
1614 | } | |
1615 | ||
03f0dbf7 AC |
1616 | static int get_serial_info(struct edgeport_port *edge_port, |
1617 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1618 | { |
1619 | struct serial_struct tmp; | |
1620 | ||
1621 | if (!retinfo) | |
1622 | return -EFAULT; | |
1623 | ||
1624 | memset(&tmp, 0, sizeof(tmp)); | |
1625 | ||
1626 | tmp.type = PORT_16550A; | |
1627 | tmp.line = edge_port->port->serial->minor; | |
1628 | tmp.port = edge_port->port->number; | |
1629 | tmp.irq = 0; | |
1630 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1631 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1632 | tmp.baud_base = 9600; | |
1633 | tmp.close_delay = 5*HZ; | |
1634 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1635 | |
1636 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1637 | return -EFAULT; | |
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | ||
1da177e4 LT |
1642 | /***************************************************************************** |
1643 | * SerialIoctl | |
1644 | * this function handles any ioctl calls to the driver | |
1645 | *****************************************************************************/ | |
00a0d0d6 | 1646 | static int edge_ioctl(struct tty_struct *tty, |
95da310e | 1647 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1648 | { |
95da310e | 1649 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1650 | DEFINE_WAIT(wait); |
1651 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1652 | struct async_icount cnow; | |
1653 | struct async_icount cprev; | |
1da177e4 | 1654 | |
984f6868 | 1655 | dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); |
1da177e4 LT |
1656 | |
1657 | switch (cmd) { | |
03f0dbf7 | 1658 | case TIOCSERGETLSR: |
984f6868 | 1659 | dev_dbg(&port->dev, "%s (%d) TIOCSERGETLSR\n", __func__, port->number); |
03f0dbf7 AC |
1660 | return get_lsr_info(edge_port, (unsigned int __user *) arg); |
1661 | ||
1662 | case TIOCGSERIAL: | |
984f6868 | 1663 | dev_dbg(&port->dev, "%s (%d) TIOCGSERIAL\n", __func__, port->number); |
03f0dbf7 AC |
1664 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); |
1665 | ||
1666 | case TIOCMIWAIT: | |
984f6868 | 1667 | dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number); |
03f0dbf7 AC |
1668 | cprev = edge_port->icount; |
1669 | while (1) { | |
33357625 | 1670 | prepare_to_wait(&port->delta_msr_wait, |
03f0dbf7 AC |
1671 | &wait, TASK_INTERRUPTIBLE); |
1672 | schedule(); | |
33357625 | 1673 | finish_wait(&port->delta_msr_wait, &wait); |
03f0dbf7 AC |
1674 | /* see if a signal did it */ |
1675 | if (signal_pending(current)) | |
1676 | return -ERESTARTSYS; | |
33357625 JH |
1677 | |
1678 | if (port->serial->disconnected) | |
1679 | return -EIO; | |
1680 | ||
03f0dbf7 AC |
1681 | cnow = edge_port->icount; |
1682 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1683 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1684 | return -EIO; /* no change => error */ | |
1685 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1686 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1687 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1688 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
1689 | return 0; | |
1da177e4 | 1690 | } |
03f0dbf7 AC |
1691 | cprev = cnow; |
1692 | } | |
1693 | /* NOTREACHED */ | |
1694 | break; | |
1da177e4 | 1695 | |
1da177e4 | 1696 | } |
1da177e4 LT |
1697 | return -ENOIOCTLCMD; |
1698 | } | |
1699 | ||
1700 | ||
1701 | /***************************************************************************** | |
1702 | * SerialBreak | |
1703 | * this function sends a break to the port | |
1704 | *****************************************************************************/ | |
03f0dbf7 | 1705 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1706 | { |
95da310e | 1707 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1708 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1709 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1710 | int status; |
1711 | ||
6e8cf775 GKH |
1712 | if ((!edge_serial->is_epic) || |
1713 | ((edge_serial->is_epic) && | |
1714 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1715 | /* flush and chase */ | |
cb8eaa8b | 1716 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1717 | |
984f6868 | 1718 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 | 1719 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1720 | if (status == 0) { |
03f0dbf7 | 1721 | /* block until chase finished */ |
6e8cf775 GKH |
1722 | block_until_chase_response(edge_port); |
1723 | } else { | |
cb8eaa8b | 1724 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1725 | } |
1da177e4 LT |
1726 | } |
1727 | ||
6e8cf775 GKH |
1728 | if ((!edge_serial->is_epic) || |
1729 | ((edge_serial->is_epic) && | |
1730 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1731 | if (break_state == -1) { | |
984f6868 | 1732 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); |
03f0dbf7 AC |
1733 | status = send_iosp_ext_cmd(edge_port, |
1734 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1735 | } else { |
984f6868 | 1736 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); |
03f0dbf7 AC |
1737 | status = send_iosp_ext_cmd(edge_port, |
1738 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1739 | } |
03f0dbf7 | 1740 | if (status) |
984f6868 | 1741 | dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", |
03f0dbf7 | 1742 | __func__); |
1da177e4 | 1743 | } |
1da177e4 LT |
1744 | } |
1745 | ||
1746 | ||
1747 | /***************************************************************************** | |
1748 | * process_rcvd_data | |
1749 | * this function handles the data received on the bulk in pipe. | |
1750 | *****************************************************************************/ | |
03f0dbf7 AC |
1751 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1752 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 | 1753 | { |
984f6868 | 1754 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
1755 | struct usb_serial_port *port; |
1756 | struct edgeport_port *edge_port; | |
1da177e4 LT |
1757 | __u16 lastBufferLength; |
1758 | __u16 rxLen; | |
1759 | ||
1da177e4 LT |
1760 | lastBufferLength = bufferLength + 1; |
1761 | ||
1762 | while (bufferLength > 0) { | |
1763 | /* failsafe incase we get a message that we don't understand */ | |
1764 | if (lastBufferLength == bufferLength) { | |
984f6868 | 1765 | dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); |
1da177e4 LT |
1766 | break; |
1767 | } | |
1768 | lastBufferLength = bufferLength; | |
1769 | ||
1770 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1771 | case EXPECT_HDR1: |
1772 | edge_serial->rxHeader1 = *buffer; | |
1773 | ++buffer; | |
1774 | --bufferLength; | |
1da177e4 | 1775 | |
03f0dbf7 AC |
1776 | if (bufferLength == 0) { |
1777 | edge_serial->rxState = EXPECT_HDR2; | |
1778 | break; | |
1779 | } | |
1780 | /* otherwise, drop on through */ | |
1781 | case EXPECT_HDR2: | |
1782 | edge_serial->rxHeader2 = *buffer; | |
1783 | ++buffer; | |
1784 | --bufferLength; | |
1785 | ||
984f6868 GKH |
1786 | dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, |
1787 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
03f0dbf7 AC |
1788 | /* Process depending on whether this header is |
1789 | * data or status */ | |
1790 | ||
1791 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1792 | /* Decode this status header and go to | |
1793 | * EXPECT_HDR1 (if we can process the status | |
1794 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1795 | * get the third byte. */ | |
1796 | edge_serial->rxPort = | |
1797 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1798 | edge_serial->rxStatusCode = | |
1799 | IOSP_GET_STATUS_CODE( | |
1800 | edge_serial->rxHeader1); | |
1801 | ||
1802 | if (!IOSP_STATUS_IS_2BYTE( | |
1803 | edge_serial->rxStatusCode)) { | |
1804 | /* This status needs additional bytes. | |
1805 | * Save what we have and then wait for | |
1806 | * more data. | |
1807 | */ | |
1808 | edge_serial->rxStatusParam | |
1809 | = edge_serial->rxHeader2; | |
1810 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1811 | break; |
1812 | } | |
03f0dbf7 AC |
1813 | /* We have all the header bytes, process the |
1814 | status now */ | |
1815 | process_rcvd_status(edge_serial, | |
1816 | edge_serial->rxHeader2, 0); | |
1817 | edge_serial->rxState = EXPECT_HDR1; | |
1818 | break; | |
1819 | } else { | |
1820 | edge_serial->rxPort = | |
1821 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1822 | edge_serial->rxBytesRemaining = | |
1823 | IOSP_GET_HDR_DATA_LEN( | |
1824 | edge_serial->rxHeader1, | |
1825 | edge_serial->rxHeader2); | |
984f6868 GKH |
1826 | dev_dbg(dev, "%s - Data for Port %u Len %u\n", |
1827 | __func__, | |
1828 | edge_serial->rxPort, | |
1829 | edge_serial->rxBytesRemaining); | |
03f0dbf7 AC |
1830 | |
1831 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1832 | * ASSERT(DevExt->RxBytesRemaining < | |
1833 | * IOSP_MAX_DATA_LENGTH); | |
1834 | */ | |
1da177e4 | 1835 | |
03f0dbf7 AC |
1836 | if (bufferLength == 0) { |
1837 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1838 | break; |
1da177e4 | 1839 | } |
03f0dbf7 AC |
1840 | /* Else, drop through */ |
1841 | } | |
1842 | case EXPECT_DATA: /* Expect data */ | |
1843 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1844 | rxLen = bufferLength; | |
1845 | /* Expect data to start next buffer */ | |
1846 | edge_serial->rxState = EXPECT_DATA; | |
1847 | } else { | |
1848 | /* BufLen >= RxBytesRemaining */ | |
1849 | rxLen = edge_serial->rxBytesRemaining; | |
1850 | /* Start another header next time */ | |
1851 | edge_serial->rxState = EXPECT_HDR1; | |
1852 | } | |
1da177e4 | 1853 | |
03f0dbf7 AC |
1854 | bufferLength -= rxLen; |
1855 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1856 | |
03f0dbf7 AC |
1857 | /* spit this data back into the tty driver if this |
1858 | port is open */ | |
1859 | if (rxLen) { | |
1860 | port = edge_serial->serial->port[ | |
1861 | edge_serial->rxPort]; | |
1862 | edge_port = usb_get_serial_port_data(port); | |
1863 | if (edge_port->open) { | |
2e124b4a JS |
1864 | dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", |
1865 | __func__, rxLen, | |
1866 | edge_serial->rxPort); | |
1867 | edge_tty_recv(edge_port->port, buffer, | |
1868 | rxLen); | |
03f0dbf7 | 1869 | edge_port->icount.rx += rxLen; |
1da177e4 | 1870 | } |
03f0dbf7 AC |
1871 | buffer += rxLen; |
1872 | } | |
1873 | break; | |
1da177e4 | 1874 | |
03f0dbf7 AC |
1875 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1876 | edge_serial->rxHeader3 = *buffer; | |
1877 | ++buffer; | |
1878 | --bufferLength; | |
1879 | ||
1880 | /* We have all the header bytes, process the | |
1881 | status now */ | |
1882 | process_rcvd_status(edge_serial, | |
1883 | edge_serial->rxStatusParam, | |
1884 | edge_serial->rxHeader3); | |
1885 | edge_serial->rxState = EXPECT_HDR1; | |
1886 | break; | |
1da177e4 LT |
1887 | } |
1888 | } | |
1889 | } | |
1890 | ||
1891 | ||
1892 | /***************************************************************************** | |
1893 | * process_rcvd_status | |
03f0dbf7 AC |
1894 | * this function handles the any status messages received on the |
1895 | * bulk in pipe. | |
1da177e4 | 1896 | *****************************************************************************/ |
03f0dbf7 AC |
1897 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1898 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1899 | { |
1900 | struct usb_serial_port *port; | |
1901 | struct edgeport_port *edge_port; | |
4a90f09b | 1902 | struct tty_struct *tty; |
984f6868 | 1903 | struct device *dev; |
1da177e4 LT |
1904 | __u8 code = edge_serial->rxStatusCode; |
1905 | ||
1906 | /* switch the port pointer to the one being currently talked about */ | |
1907 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1908 | edge_port = usb_get_serial_port_data(port); | |
1909 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1910 | dev_err(&edge_serial->serial->dev->dev, |
1911 | "%s - edge_port == NULL for port %d\n", | |
1912 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1913 | return; |
1914 | } | |
984f6868 | 1915 | dev = &port->dev; |
1da177e4 LT |
1916 | |
1917 | if (code == IOSP_EXT_STATUS) { | |
1918 | switch (byte2) { | |
03f0dbf7 AC |
1919 | case IOSP_EXT_STATUS_CHASE_RSP: |
1920 | /* we want to do EXT status regardless of port | |
1921 | * open/closed */ | |
984f6868 GKH |
1922 | dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", |
1923 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1924 | /* Currently, the only EXT_STATUS is Chase, so process |
1925 | * here instead of one more call to one more subroutine | |
1926 | * If/when more EXT_STATUS, there'll be more work to do | |
1927 | * Also, we currently clear flag and close the port | |
1928 | * regardless of content of above's Byte3. | |
1929 | * We could choose to do something else when Byte3 says | |
1930 | * Timeout on Chase from Edgeport, like wait longer in | |
1931 | * block_until_chase_response, but for now we don't. | |
1932 | */ | |
1933 | edge_port->chaseResponsePending = false; | |
1934 | wake_up(&edge_port->wait_chase); | |
1935 | return; | |
1da177e4 | 1936 | |
03f0dbf7 | 1937 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
984f6868 GKH |
1938 | dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", |
1939 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1940 | /* Port->RxCheckRsp = true; */ |
1941 | return; | |
1da177e4 LT |
1942 | } |
1943 | } | |
1944 | ||
1945 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1946 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1947 | edge_port->maxTxCredits = edge_port->txCredits; | |
984f6868 GKH |
1948 | dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", |
1949 | __func__, edge_serial->rxPort, byte2, edge_port->txCredits); | |
03f0dbf7 | 1950 | handle_new_msr(edge_port, byte2); |
1da177e4 | 1951 | |
03f0dbf7 AC |
1952 | /* send the current line settings to the port so we are |
1953 | in sync with any further termios calls */ | |
4a90f09b AC |
1954 | tty = tty_port_tty_get(&edge_port->port->port); |
1955 | if (tty) { | |
1956 | change_port_settings(tty, | |
adc8d746 | 1957 | edge_port, &tty->termios); |
4a90f09b AC |
1958 | tty_kref_put(tty); |
1959 | } | |
1da177e4 LT |
1960 | |
1961 | /* we have completed the open */ | |
cb8eaa8b RK |
1962 | edge_port->openPending = false; |
1963 | edge_port->open = true; | |
1da177e4 LT |
1964 | wake_up(&edge_port->wait_open); |
1965 | return; | |
1966 | } | |
1967 | ||
03f0dbf7 AC |
1968 | /* If port is closed, silently discard all rcvd status. We can |
1969 | * have cases where buffered status is received AFTER the close | |
1970 | * port command is sent to the Edgeport. | |
1971 | */ | |
1972 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 1973 | return; |
1da177e4 LT |
1974 | |
1975 | switch (code) { | |
03f0dbf7 AC |
1976 | /* Not currently sent by Edgeport */ |
1977 | case IOSP_STATUS_LSR: | |
984f6868 GKH |
1978 | dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", |
1979 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1980 | handle_new_lsr(edge_port, false, byte2, 0); |
1981 | break; | |
1da177e4 | 1982 | |
03f0dbf7 | 1983 | case IOSP_STATUS_LSR_DATA: |
984f6868 GKH |
1984 | dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", |
1985 | __func__, edge_serial->rxPort, byte2, byte3); | |
03f0dbf7 AC |
1986 | /* byte2 is LSR Register */ |
1987 | /* byte3 is broken data byte */ | |
1988 | handle_new_lsr(edge_port, true, byte2, byte3); | |
1989 | break; | |
1990 | /* | |
1991 | * case IOSP_EXT_4_STATUS: | |
984f6868 | 1992 | * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", |
03f0dbf7 AC |
1993 | * __func__, edge_serial->rxPort, byte2, byte3); |
1994 | * break; | |
1995 | */ | |
1996 | case IOSP_STATUS_MSR: | |
984f6868 GKH |
1997 | dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", |
1998 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1999 | /* |
2000 | * Process this new modem status and generate appropriate | |
2001 | * events, etc, based on the new status. This routine | |
2002 | * also saves the MSR in Port->ShadowMsr. | |
2003 | */ | |
2004 | handle_new_msr(edge_port, byte2); | |
2005 | break; | |
1da177e4 | 2006 | |
03f0dbf7 | 2007 | default: |
984f6868 | 2008 | dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); |
03f0dbf7 | 2009 | break; |
1da177e4 | 2010 | } |
1da177e4 LT |
2011 | } |
2012 | ||
2013 | ||
2014 | /***************************************************************************** | |
2015 | * edge_tty_recv | |
2016 | * this function passes data on to the tty flip buffer | |
2017 | *****************************************************************************/ | |
2e124b4a JS |
2018 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
2019 | int length) | |
1da177e4 LT |
2020 | { |
2021 | int cnt; | |
2022 | ||
05c7cd39 | 2023 | cnt = tty_insert_flip_string(&port->port, data, length); |
a108bfcb | 2024 | if (cnt < length) { |
05c7cd39 | 2025 | dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", |
a108bfcb AC |
2026 | __func__, length - cnt); |
2027 | } | |
2028 | data += cnt; | |
2029 | length -= cnt; | |
1da177e4 | 2030 | |
2e124b4a | 2031 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
2032 | } |
2033 | ||
2034 | ||
2035 | /***************************************************************************** | |
2036 | * handle_new_msr | |
2037 | * this function handles any change to the msr register for a port. | |
2038 | *****************************************************************************/ | |
2039 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2040 | { | |
2041 | struct async_icount *icount; | |
2042 | ||
03f0dbf7 AC |
2043 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
2044 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
2045 | icount = &edge_port->icount; |
2046 | ||
2047 | /* update input line counters */ | |
03f0dbf7 | 2048 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 2049 | icount->cts++; |
03f0dbf7 | 2050 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 2051 | icount->dsr++; |
03f0dbf7 | 2052 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 2053 | icount->dcd++; |
03f0dbf7 | 2054 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 2055 | icount->rng++; |
33357625 | 2056 | wake_up_interruptible(&edge_port->port->delta_msr_wait); |
1da177e4 LT |
2057 | } |
2058 | ||
2059 | /* Save the new modem status */ | |
2060 | edge_port->shadowMSR = newMsr & 0xf0; | |
1da177e4 LT |
2061 | } |
2062 | ||
2063 | ||
2064 | /***************************************************************************** | |
2065 | * handle_new_lsr | |
2066 | * this function handles any change to the lsr register for a port. | |
2067 | *****************************************************************************/ | |
03f0dbf7 AC |
2068 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
2069 | __u8 lsr, __u8 data) | |
1da177e4 | 2070 | { |
03f0dbf7 AC |
2071 | __u8 newLsr = (__u8) (lsr & (__u8) |
2072 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2073 | struct async_icount *icount; | |
1da177e4 | 2074 | |
1da177e4 LT |
2075 | edge_port->shadowLSR = lsr; |
2076 | ||
2077 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
2078 | /* |
2079 | * Parity and Framing errors only count if they | |
2080 | * occur exclusive of a break being | |
2081 | * received. | |
2082 | */ | |
1da177e4 LT |
2083 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
2084 | } | |
2085 | ||
2086 | /* Place LSR data byte into Rx buffer */ | |
2e124b4a JS |
2087 | if (lsrData) |
2088 | edge_tty_recv(edge_port->port, &data, 1); | |
2089 | ||
1da177e4 LT |
2090 | /* update input line counters */ |
2091 | icount = &edge_port->icount; | |
03f0dbf7 | 2092 | if (newLsr & LSR_BREAK) |
1da177e4 | 2093 | icount->brk++; |
03f0dbf7 | 2094 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 2095 | icount->overrun++; |
03f0dbf7 | 2096 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 2097 | icount->parity++; |
03f0dbf7 | 2098 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 2099 | icount->frame++; |
1da177e4 LT |
2100 | } |
2101 | ||
2102 | ||
2103 | /**************************************************************************** | |
2104 | * sram_write | |
03f0dbf7 | 2105 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2106 | * given address. |
2107 | * If successful returns the number of bytes written, otherwise it returns | |
2108 | * a negative error number of the problem. | |
2109 | ****************************************************************************/ | |
03f0dbf7 AC |
2110 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2111 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2112 | { |
2113 | int result; | |
2114 | __u16 current_length; | |
2115 | unsigned char *transfer_buffer; | |
2116 | ||
984f6868 | 2117 | dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); |
1da177e4 | 2118 | |
03f0dbf7 | 2119 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2120 | if (!transfer_buffer) { |
03f0dbf7 AC |
2121 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2122 | __func__, 64); | |
1da177e4 LT |
2123 | return -ENOMEM; |
2124 | } | |
2125 | ||
2126 | /* need to split these writes up into 64 byte chunks */ | |
2127 | result = 0; | |
2128 | while (length > 0) { | |
03f0dbf7 | 2129 | if (length > 64) |
1da177e4 | 2130 | current_length = 64; |
03f0dbf7 | 2131 | else |
1da177e4 | 2132 | current_length = length; |
03f0dbf7 | 2133 | |
984f6868 | 2134 | /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ |
03f0dbf7 AC |
2135 | memcpy(transfer_buffer, data, current_length); |
2136 | result = usb_control_msg(serial->dev, | |
2137 | usb_sndctrlpipe(serial->dev, 0), | |
2138 | USB_REQUEST_ION_WRITE_RAM, | |
2139 | 0x40, addr, extAddr, transfer_buffer, | |
2140 | current_length, 300); | |
1da177e4 LT |
2141 | if (result < 0) |
2142 | break; | |
2143 | length -= current_length; | |
2144 | addr += current_length; | |
2145 | data += current_length; | |
03f0dbf7 | 2146 | } |
1da177e4 | 2147 | |
03f0dbf7 | 2148 | kfree(transfer_buffer); |
1da177e4 LT |
2149 | return result; |
2150 | } | |
2151 | ||
2152 | ||
2153 | /**************************************************************************** | |
2154 | * rom_write | |
2155 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2156 | * given address. | |
2157 | * If successful returns the number of bytes written, otherwise it returns | |
2158 | * a negative error number of the problem. | |
2159 | ****************************************************************************/ | |
03f0dbf7 AC |
2160 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2161 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2162 | { |
2163 | int result; | |
2164 | __u16 current_length; | |
2165 | unsigned char *transfer_buffer; | |
2166 | ||
03f0dbf7 | 2167 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2168 | if (!transfer_buffer) { |
03f0dbf7 AC |
2169 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2170 | __func__, 64); | |
1da177e4 LT |
2171 | return -ENOMEM; |
2172 | } | |
2173 | ||
2174 | /* need to split these writes up into 64 byte chunks */ | |
2175 | result = 0; | |
2176 | while (length > 0) { | |
03f0dbf7 | 2177 | if (length > 64) |
1da177e4 | 2178 | current_length = 64; |
03f0dbf7 | 2179 | else |
1da177e4 | 2180 | current_length = length; |
03f0dbf7 AC |
2181 | memcpy(transfer_buffer, data, current_length); |
2182 | result = usb_control_msg(serial->dev, | |
2183 | usb_sndctrlpipe(serial->dev, 0), | |
2184 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2185 | addr, extAddr, | |
2186 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2187 | if (result < 0) |
2188 | break; | |
2189 | length -= current_length; | |
2190 | addr += current_length; | |
2191 | data += current_length; | |
03f0dbf7 | 2192 | } |
1da177e4 | 2193 | |
03f0dbf7 | 2194 | kfree(transfer_buffer); |
1da177e4 LT |
2195 | return result; |
2196 | } | |
2197 | ||
2198 | ||
2199 | /**************************************************************************** | |
2200 | * rom_read | |
2201 | * reads a number of bytes from the Edgeport device starting at the given | |
2202 | * address. | |
2203 | * If successful returns the number of bytes read, otherwise it returns | |
2204 | * a negative error number of the problem. | |
2205 | ****************************************************************************/ | |
03f0dbf7 AC |
2206 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2207 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2208 | { |
2209 | int result; | |
2210 | __u16 current_length; | |
2211 | unsigned char *transfer_buffer; | |
2212 | ||
03f0dbf7 | 2213 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2214 | if (!transfer_buffer) { |
03f0dbf7 AC |
2215 | dev_err(&serial->dev->dev, |
2216 | "%s - kmalloc(%d) failed.\n", __func__, 64); | |
1da177e4 LT |
2217 | return -ENOMEM; |
2218 | } | |
2219 | ||
2220 | /* need to split these reads up into 64 byte chunks */ | |
2221 | result = 0; | |
2222 | while (length > 0) { | |
03f0dbf7 | 2223 | if (length > 64) |
1da177e4 | 2224 | current_length = 64; |
03f0dbf7 | 2225 | else |
1da177e4 | 2226 | current_length = length; |
03f0dbf7 AC |
2227 | result = usb_control_msg(serial->dev, |
2228 | usb_rcvctrlpipe(serial->dev, 0), | |
2229 | USB_REQUEST_ION_READ_ROM, | |
2230 | 0xC0, addr, extAddr, transfer_buffer, | |
2231 | current_length, 300); | |
1da177e4 LT |
2232 | if (result < 0) |
2233 | break; | |
03f0dbf7 | 2234 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2235 | length -= current_length; |
2236 | addr += current_length; | |
2237 | data += current_length; | |
03f0dbf7 | 2238 | } |
1da177e4 | 2239 | |
03f0dbf7 | 2240 | kfree(transfer_buffer); |
1da177e4 LT |
2241 | return result; |
2242 | } | |
2243 | ||
2244 | ||
2245 | /**************************************************************************** | |
2246 | * send_iosp_ext_cmd | |
2247 | * Is used to send a IOSP message to the Edgeport device | |
2248 | ****************************************************************************/ | |
03f0dbf7 AC |
2249 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2250 | __u8 command, __u8 param) | |
1da177e4 LT |
2251 | { |
2252 | unsigned char *buffer; | |
2253 | unsigned char *currentCommand; | |
2254 | int length = 0; | |
2255 | int status = 0; | |
2256 | ||
03f0dbf7 | 2257 | buffer = kmalloc(10, GFP_ATOMIC); |
1da177e4 | 2258 | if (!buffer) { |
03f0dbf7 AC |
2259 | dev_err(&edge_port->port->dev, |
2260 | "%s - kmalloc(%d) failed.\n", __func__, 10); | |
1da177e4 LT |
2261 | return -ENOMEM; |
2262 | } | |
2263 | ||
2264 | currentCommand = buffer; | |
2265 | ||
03f0dbf7 AC |
2266 | MAKE_CMD_EXT_CMD(¤tCommand, &length, |
2267 | edge_port->port->number - edge_port->port->serial->minor, | |
2268 | command, param); | |
1da177e4 | 2269 | |
03f0dbf7 | 2270 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2271 | if (status) { |
2272 | /* something bad happened, let's free up the memory */ | |
2273 | kfree(buffer); | |
2274 | } | |
2275 | ||
2276 | return status; | |
2277 | } | |
2278 | ||
2279 | ||
2280 | /***************************************************************************** | |
2281 | * write_cmd_usb | |
2282 | * this function writes the given buffer out to the bulk write endpoint. | |
2283 | *****************************************************************************/ | |
03f0dbf7 AC |
2284 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2285 | unsigned char *buffer, int length) | |
1da177e4 | 2286 | { |
03f0dbf7 AC |
2287 | struct edgeport_serial *edge_serial = |
2288 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2289 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2290 | int status = 0; |
2291 | struct urb *urb; | |
1da177e4 | 2292 | |
59d33f2f | 2293 | usb_serial_debug_data(dev, __func__, length, buffer); |
1da177e4 LT |
2294 | |
2295 | /* Allocate our next urb */ | |
03f0dbf7 | 2296 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2297 | if (!urb) |
2298 | return -ENOMEM; | |
2299 | ||
96c706ed | 2300 | atomic_inc(&CmdUrbs); |
984f6868 GKH |
2301 | dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", |
2302 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2303 | |
03f0dbf7 AC |
2304 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2305 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2306 | edge_serial->bulk_out_endpoint), | |
2307 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2308 | |
cb8eaa8b | 2309 | edge_port->commandPending = true; |
1da177e4 LT |
2310 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2311 | ||
2312 | if (status) { | |
2313 | /* something went wrong */ | |
984f6868 GKH |
2314 | dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", |
2315 | __func__, status); | |
1da177e4 LT |
2316 | usb_kill_urb(urb); |
2317 | usb_free_urb(urb); | |
96c706ed | 2318 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2319 | return status; |
2320 | } | |
2321 | ||
1da177e4 | 2322 | #if 0 |
03f0dbf7 | 2323 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2324 | |
cb8eaa8b | 2325 | if (edge_port->commandPending) { |
1da177e4 | 2326 | /* command timed out */ |
984f6868 | 2327 | dev_dbg(dev, "%s - command timed out\n", __func__); |
1da177e4 LT |
2328 | status = -EINVAL; |
2329 | } | |
2330 | #endif | |
2331 | return status; | |
2332 | } | |
2333 | ||
2334 | ||
2335 | /***************************************************************************** | |
2336 | * send_cmd_write_baud_rate | |
2337 | * this function sends the proper command to change the baud rate of the | |
2338 | * specified port. | |
2339 | *****************************************************************************/ | |
03f0dbf7 AC |
2340 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2341 | int baudRate) | |
1da177e4 | 2342 | { |
03f0dbf7 AC |
2343 | struct edgeport_serial *edge_serial = |
2344 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2345 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2346 | unsigned char *cmdBuffer; |
2347 | unsigned char *currCmd; | |
2348 | int cmdLen = 0; | |
2349 | int divisor; | |
2350 | int status; | |
03f0dbf7 AC |
2351 | unsigned char number = |
2352 | edge_port->port->number - edge_port->port->serial->minor; | |
1da177e4 | 2353 | |
bc71e479 AK |
2354 | if (edge_serial->is_epic && |
2355 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
984f6868 GKH |
2356 | dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d\n", |
2357 | edge_port->port->number, baudRate); | |
6e8cf775 GKH |
2358 | return 0; |
2359 | } | |
2360 | ||
984f6868 GKH |
2361 | dev_dbg(dev, "%s - port = %d, baud = %d\n", __func__, |
2362 | edge_port->port->number, baudRate); | |
1da177e4 | 2363 | |
984f6868 | 2364 | status = calc_baud_rate_divisor(dev, baudRate, &divisor); |
1da177e4 | 2365 | if (status) { |
984f6868 | 2366 | dev_err(dev, "%s - bad baud rate\n", __func__); |
1da177e4 LT |
2367 | return status; |
2368 | } | |
2369 | ||
03f0dbf7 AC |
2370 | /* Alloc memory for the string of commands. */ |
2371 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
1da177e4 | 2372 | if (!cmdBuffer) { |
984f6868 | 2373 | dev_err(dev, "%s - kmalloc(%d) failed.\n", __func__, 0x100); |
1da177e4 LT |
2374 | return -ENOMEM; |
2375 | } | |
2376 | currCmd = cmdBuffer; | |
2377 | ||
03f0dbf7 AC |
2378 | /* Enable access to divisor latch */ |
2379 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2380 | |
03f0dbf7 AC |
2381 | /* Write the divisor itself */ |
2382 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2383 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2384 | |
03f0dbf7 AC |
2385 | /* Restore original value to disable access to divisor latch */ |
2386 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2387 | edge_port->shadowLCR); | |
1da177e4 | 2388 | |
03f0dbf7 | 2389 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2390 | if (status) { |
2391 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2392 | kfree(cmdBuffer); |
1da177e4 LT |
2393 | } |
2394 | ||
2395 | return status; | |
2396 | } | |
2397 | ||
2398 | ||
2399 | /***************************************************************************** | |
2400 | * calc_baud_rate_divisor | |
2401 | * this function calculates the proper baud rate divisor for the specified | |
2402 | * baud rate. | |
2403 | *****************************************************************************/ | |
984f6868 | 2404 | static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) |
1da177e4 LT |
2405 | { |
2406 | int i; | |
2407 | __u16 custom; | |
2408 | ||
52950ed4 | 2409 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2410 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2411 | *divisor = divisor_table[i].Divisor; |
2412 | return 0; | |
2413 | } | |
2414 | } | |
2415 | ||
03f0dbf7 AC |
2416 | /* We have tried all of the standard baud rates |
2417 | * lets try to calculate the divisor for this baud rate | |
2418 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2419 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2420 | /* get divisor */ |
1da177e4 LT |
2421 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2422 | ||
2423 | *divisor = custom; | |
2424 | ||
984f6868 | 2425 | dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); |
1da177e4 LT |
2426 | return 0; |
2427 | } | |
2428 | ||
2429 | return -1; | |
2430 | } | |
2431 | ||
2432 | ||
2433 | /***************************************************************************** | |
2434 | * send_cmd_write_uart_register | |
fd589a8f | 2435 | * this function builds up a uart register message and sends to the device. |
1da177e4 | 2436 | *****************************************************************************/ |
03f0dbf7 AC |
2437 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2438 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2439 | { |
03f0dbf7 AC |
2440 | struct edgeport_serial *edge_serial = |
2441 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2442 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2443 | unsigned char *cmdBuffer; |
2444 | unsigned char *currCmd; | |
2445 | unsigned long cmdLen = 0; | |
2446 | int status; | |
2447 | ||
984f6868 GKH |
2448 | dev_dbg(dev, "%s - write to %s register 0x%02x\n", |
2449 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2450 | |
bc71e479 AK |
2451 | if (edge_serial->is_epic && |
2452 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2453 | regNum == MCR) { | |
984f6868 | 2454 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); |
6e8cf775 GKH |
2455 | return 0; |
2456 | } | |
2457 | ||
bc71e479 AK |
2458 | if (edge_serial->is_epic && |
2459 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2460 | regNum == LCR) { | |
984f6868 | 2461 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); |
6e8cf775 GKH |
2462 | return 0; |
2463 | } | |
2464 | ||
03f0dbf7 AC |
2465 | /* Alloc memory for the string of commands. */ |
2466 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2467 | if (cmdBuffer == NULL) | |
1da177e4 | 2468 | return -ENOMEM; |
1da177e4 LT |
2469 | |
2470 | currCmd = cmdBuffer; | |
2471 | ||
03f0dbf7 AC |
2472 | /* Build a cmd in the buffer to write the given register */ |
2473 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, | |
2474 | edge_port->port->number - edge_port->port->serial->minor, | |
2475 | regNum, regValue); | |
1da177e4 LT |
2476 | |
2477 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2478 | if (status) { | |
2479 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2480 | kfree(cmdBuffer); |
1da177e4 LT |
2481 | } |
2482 | ||
2483 | return status; | |
2484 | } | |
2485 | ||
2486 | ||
2487 | /***************************************************************************** | |
2488 | * change_port_settings | |
03f0dbf7 AC |
2489 | * This routine is called to set the UART on the device to match the |
2490 | * specified new settings. | |
1da177e4 | 2491 | *****************************************************************************/ |
95da310e AC |
2492 | |
2493 | static void change_port_settings(struct tty_struct *tty, | |
2494 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2495 | { |
984f6868 | 2496 | struct device *dev = &edge_port->port->dev; |
03f0dbf7 AC |
2497 | struct edgeport_serial *edge_serial = |
2498 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2499 | int baud; |
2500 | unsigned cflag; | |
2501 | __u8 mask = 0xff; | |
2502 | __u8 lData; | |
2503 | __u8 lParity; | |
2504 | __u8 lStop; | |
2505 | __u8 rxFlow; | |
2506 | __u8 txFlow; | |
2507 | int status; | |
2508 | ||
984f6868 | 2509 | dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); |
1da177e4 | 2510 | |
cb8eaa8b RK |
2511 | if (!edge_port->open && |
2512 | !edge_port->openPending) { | |
984f6868 | 2513 | dev_dbg(dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
2514 | return; |
2515 | } | |
2516 | ||
adc8d746 | 2517 | cflag = tty->termios.c_cflag; |
1da177e4 LT |
2518 | |
2519 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2520 | case CS5: |
2521 | lData = LCR_BITS_5; mask = 0x1f; | |
984f6868 | 2522 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
03f0dbf7 AC |
2523 | break; |
2524 | case CS6: | |
2525 | lData = LCR_BITS_6; mask = 0x3f; | |
984f6868 | 2526 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
03f0dbf7 AC |
2527 | break; |
2528 | case CS7: | |
2529 | lData = LCR_BITS_7; mask = 0x7f; | |
984f6868 | 2530 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
03f0dbf7 AC |
2531 | break; |
2532 | default: | |
2533 | case CS8: | |
2534 | lData = LCR_BITS_8; | |
984f6868 | 2535 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
03f0dbf7 | 2536 | break; |
1da177e4 LT |
2537 | } |
2538 | ||
2539 | lParity = LCR_PAR_NONE; | |
2540 | if (cflag & PARENB) { | |
2541 | if (cflag & CMSPAR) { | |
2542 | if (cflag & PARODD) { | |
2543 | lParity = LCR_PAR_MARK; | |
984f6868 | 2544 | dev_dbg(dev, "%s - parity = mark\n", __func__); |
1da177e4 LT |
2545 | } else { |
2546 | lParity = LCR_PAR_SPACE; | |
984f6868 | 2547 | dev_dbg(dev, "%s - parity = space\n", __func__); |
1da177e4 LT |
2548 | } |
2549 | } else if (cflag & PARODD) { | |
2550 | lParity = LCR_PAR_ODD; | |
984f6868 | 2551 | dev_dbg(dev, "%s - parity = odd\n", __func__); |
1da177e4 LT |
2552 | } else { |
2553 | lParity = LCR_PAR_EVEN; | |
984f6868 | 2554 | dev_dbg(dev, "%s - parity = even\n", __func__); |
1da177e4 LT |
2555 | } |
2556 | } else { | |
984f6868 | 2557 | dev_dbg(dev, "%s - parity = none\n", __func__); |
1da177e4 LT |
2558 | } |
2559 | ||
2560 | if (cflag & CSTOPB) { | |
2561 | lStop = LCR_STOP_2; | |
984f6868 | 2562 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
2563 | } else { |
2564 | lStop = LCR_STOP_1; | |
984f6868 | 2565 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 LT |
2566 | } |
2567 | ||
2568 | /* figure out the flow control settings */ | |
2569 | rxFlow = txFlow = 0x00; | |
2570 | if (cflag & CRTSCTS) { | |
2571 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2572 | txFlow |= IOSP_TX_FLOW_CTS; | |
984f6868 | 2573 | dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); |
1da177e4 | 2574 | } else { |
984f6868 | 2575 | dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); |
1da177e4 LT |
2576 | } |
2577 | ||
03f0dbf7 AC |
2578 | /* if we are implementing XON/XOFF, set the start and stop character |
2579 | in the device */ | |
1da177e4 LT |
2580 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2581 | unsigned char stop_char = STOP_CHAR(tty); | |
2582 | unsigned char start_char = START_CHAR(tty); | |
2583 | ||
6e8cf775 GKH |
2584 | if ((!edge_serial->is_epic) || |
2585 | ((edge_serial->is_epic) && | |
2586 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
03f0dbf7 AC |
2587 | send_iosp_ext_cmd(edge_port, |
2588 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2589 | send_iosp_ext_cmd(edge_port, | |
2590 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2591 | } |
1da177e4 LT |
2592 | |
2593 | /* if we are implementing INBOUND XON/XOFF */ | |
2594 | if (I_IXOFF(tty)) { | |
2595 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
984f6868 GKH |
2596 | dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2597 | __func__, start_char, stop_char); | |
1da177e4 | 2598 | } else { |
984f6868 | 2599 | dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2600 | } |
2601 | ||
2602 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2603 | if (I_IXON(tty)) { | |
2604 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
984f6868 GKH |
2605 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2606 | __func__, start_char, stop_char); | |
1da177e4 | 2607 | } else { |
984f6868 | 2608 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2609 | } |
2610 | } | |
2611 | ||
2612 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2613 | if ((!edge_serial->is_epic) || |
2614 | ((edge_serial->is_epic) && | |
2615 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2616 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2617 | if ((!edge_serial->is_epic) || | |
2618 | ((edge_serial->is_epic) && | |
2619 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2620 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2621 | |
2622 | ||
2623 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2624 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2625 | ||
2626 | edge_port->validDataMask = mask; | |
2627 | ||
2628 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2629 | status = send_cmd_write_uart_register(edge_port, LCR, |
2630 | edge_port->shadowLCR); | |
2631 | if (status != 0) | |
1da177e4 | 2632 | return; |
1da177e4 LT |
2633 | |
2634 | /* set up the MCR register and send it to the EdgePort */ | |
2635 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2636 | if (cflag & CBAUD) |
1da177e4 | 2637 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2638 | |
2639 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2640 | edge_port->shadowMCR); | |
2641 | if (status != 0) | |
1da177e4 | 2642 | return; |
1da177e4 LT |
2643 | |
2644 | /* Determine divisor based on baud rate */ | |
2645 | baud = tty_get_baud_rate(tty); | |
2646 | if (!baud) { | |
2647 | /* pick a default, any default... */ | |
2648 | baud = 9600; | |
2649 | } | |
2650 | ||
984f6868 | 2651 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
03f0dbf7 | 2652 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2653 | if (status == -1) { |
2654 | /* Speed change was not possible - put back the old speed */ | |
2655 | baud = tty_termios_baud_rate(old_termios); | |
2656 | tty_encode_baud_rate(tty, baud, baud); | |
2657 | } | |
1da177e4 LT |
2658 | } |
2659 | ||
2660 | ||
2661 | /**************************************************************************** | |
2662 | * unicode_to_ascii | |
2663 | * Turns a string from Unicode into ASCII. | |
2664 | * Doesn't do a good job with any characters that are outside the normal | |
2665 | * ASCII range, but it's only for debugging... | |
2666 | * NOTE: expects the unicode in LE format | |
2667 | ****************************************************************************/ | |
03f0dbf7 AC |
2668 | static void unicode_to_ascii(char *string, int buflen, |
2669 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2670 | { |
2671 | int i; | |
2672 | ||
ad93375a | 2673 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2674 | return; |
ad93375a | 2675 | --buflen; /* space for nul */ |
1da177e4 | 2676 | |
ad93375a PZ |
2677 | for (i = 0; i < unicode_size; i++) { |
2678 | if (i >= buflen) | |
2679 | break; | |
1da177e4 | 2680 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2681 | } |
2682 | string[i] = 0x00; | |
1da177e4 LT |
2683 | } |
2684 | ||
2685 | ||
2686 | /**************************************************************************** | |
2687 | * get_manufacturing_desc | |
03f0dbf7 | 2688 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2689 | * structure. |
2690 | ****************************************************************************/ | |
03f0dbf7 | 2691 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2692 | { |
984f6868 | 2693 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2694 | int response; |
2695 | ||
984f6868 | 2696 | dev_dbg(dev, "getting manufacturer descriptor\n"); |
1da177e4 | 2697 | |
03f0dbf7 AC |
2698 | response = rom_read(edge_serial->serial, |
2699 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2700 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2701 | EDGE_MANUF_DESC_LEN, | |
2702 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2703 | |
03f0dbf7 | 2704 | if (response < 1) |
984f6868 | 2705 | dev_err(dev, "error in getting manufacturer descriptor\n"); |
03f0dbf7 | 2706 | else { |
1da177e4 | 2707 | char string[30]; |
984f6868 GKH |
2708 | dev_dbg(dev, "**Manufacturer Descriptor\n"); |
2709 | dev_dbg(dev, " RomSize: %dK\n", | |
03f0dbf7 | 2710 | edge_serial->manuf_descriptor.RomSize); |
984f6868 | 2711 | dev_dbg(dev, " RamSize: %dK\n", |
03f0dbf7 | 2712 | edge_serial->manuf_descriptor.RamSize); |
984f6868 | 2713 | dev_dbg(dev, " CpuRev: %d\n", |
03f0dbf7 | 2714 | edge_serial->manuf_descriptor.CpuRev); |
984f6868 | 2715 | dev_dbg(dev, " BoardRev: %d\n", |
03f0dbf7 | 2716 | edge_serial->manuf_descriptor.BoardRev); |
984f6868 | 2717 | dev_dbg(dev, " NumPorts: %d\n", |
03f0dbf7 | 2718 | edge_serial->manuf_descriptor.NumPorts); |
984f6868 | 2719 | dev_dbg(dev, " DescDate: %d/%d/%d\n", |
03f0dbf7 AC |
2720 | edge_serial->manuf_descriptor.DescDate[0], |
2721 | edge_serial->manuf_descriptor.DescDate[1], | |
2722 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2723 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2724 | edge_serial->manuf_descriptor.SerialNumber, |
2725 | edge_serial->manuf_descriptor.SerNumLength/2); | |
984f6868 | 2726 | dev_dbg(dev, " SerialNumber: %s\n", string); |
4bc203d9 | 2727 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2728 | edge_serial->manuf_descriptor.AssemblyNumber, |
2729 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
984f6868 | 2730 | dev_dbg(dev, " AssemblyNumber: %s\n", string); |
4bc203d9 | 2731 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2732 | edge_serial->manuf_descriptor.OemAssyNumber, |
2733 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
984f6868 GKH |
2734 | dev_dbg(dev, " OemAssyNumber: %s\n", string); |
2735 | dev_dbg(dev, " UartType: %d\n", | |
03f0dbf7 | 2736 | edge_serial->manuf_descriptor.UartType); |
984f6868 | 2737 | dev_dbg(dev, " IonPid: %d\n", |
03f0dbf7 | 2738 | edge_serial->manuf_descriptor.IonPid); |
984f6868 | 2739 | dev_dbg(dev, " IonConfig: %d\n", |
03f0dbf7 | 2740 | edge_serial->manuf_descriptor.IonConfig); |
1da177e4 LT |
2741 | } |
2742 | } | |
2743 | ||
2744 | ||
2745 | /**************************************************************************** | |
2746 | * get_boot_desc | |
03f0dbf7 | 2747 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2748 | * structure. |
2749 | ****************************************************************************/ | |
03f0dbf7 | 2750 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2751 | { |
984f6868 | 2752 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2753 | int response; |
2754 | ||
984f6868 | 2755 | dev_dbg(dev, "getting boot descriptor\n"); |
1da177e4 | 2756 | |
03f0dbf7 AC |
2757 | response = rom_read(edge_serial->serial, |
2758 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2759 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2760 | EDGE_BOOT_DESC_LEN, | |
2761 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2762 | |
03f0dbf7 | 2763 | if (response < 1) |
984f6868 | 2764 | dev_err(dev, "error in getting boot descriptor\n"); |
03f0dbf7 | 2765 | else { |
984f6868 GKH |
2766 | dev_dbg(dev, "**Boot Descriptor:\n"); |
2767 | dev_dbg(dev, " BootCodeLength: %d\n", | |
2768 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2769 | dev_dbg(dev, " MajorVersion: %d\n", | |
03f0dbf7 | 2770 | edge_serial->boot_descriptor.MajorVersion); |
984f6868 | 2771 | dev_dbg(dev, " MinorVersion: %d\n", |
03f0dbf7 | 2772 | edge_serial->boot_descriptor.MinorVersion); |
984f6868 | 2773 | dev_dbg(dev, " BuildNumber: %d\n", |
03f0dbf7 | 2774 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
984f6868 | 2775 | dev_dbg(dev, " Capabilities: 0x%x\n", |
03f0dbf7 | 2776 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); |
984f6868 | 2777 | dev_dbg(dev, " UConfig0: %d\n", |
03f0dbf7 | 2778 | edge_serial->boot_descriptor.UConfig0); |
984f6868 | 2779 | dev_dbg(dev, " UConfig1: %d\n", |
03f0dbf7 | 2780 | edge_serial->boot_descriptor.UConfig1); |
1da177e4 LT |
2781 | } |
2782 | } | |
2783 | ||
2784 | ||
2785 | /**************************************************************************** | |
2786 | * load_application_firmware | |
2787 | * This is called to load the application firmware to the device | |
2788 | ****************************************************************************/ | |
03f0dbf7 | 2789 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2790 | { |
984f6868 | 2791 | struct device *dev = &edge_serial->serial->dev->dev; |
5b9ea932 JS |
2792 | const struct ihex_binrec *rec; |
2793 | const struct firmware *fw; | |
2794 | const char *fw_name; | |
2795 | const char *fw_info; | |
1da177e4 | 2796 | int response; |
5b9ea932 JS |
2797 | __u32 Operaddr; |
2798 | __u16 build; | |
1da177e4 LT |
2799 | |
2800 | switch (edge_serial->product_info.iDownloadFile) { | |
2801 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2802 | fw_info = "downloading firmware version (930)"; |
2803 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2804 | break; |
2805 | ||
2806 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2807 | fw_info = "downloading firmware version (80251)"; |
2808 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2809 | break; |
2810 | ||
2811 | case EDGE_DOWNLOAD_FILE_NONE: | |
984f6868 | 2812 | dev_dbg(dev, "No download file specified, skipping download\n"); |
1da177e4 LT |
2813 | return; |
2814 | ||
2815 | default: | |
2816 | return; | |
2817 | } | |
2818 | ||
5b9ea932 JS |
2819 | response = request_ihex_firmware(&fw, fw_name, |
2820 | &edge_serial->serial->dev->dev); | |
2821 | if (response) { | |
984f6868 | 2822 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
2823 | fw_name, response); |
2824 | return; | |
2825 | } | |
2826 | ||
2827 | rec = (const struct ihex_binrec *)fw->data; | |
2828 | build = (rec->data[2] << 8) | rec->data[3]; | |
2829 | ||
984f6868 | 2830 | dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); |
5b9ea932 | 2831 | |
271c1150 BM |
2832 | edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
2833 | edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; | |
5b9ea932 | 2834 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
1da177e4 | 2835 | |
5b9ea932 JS |
2836 | for (rec = ihex_next_binrec(rec); rec; |
2837 | rec = ihex_next_binrec(rec)) { | |
2838 | Operaddr = be32_to_cpu(rec->addr); | |
2839 | response = sram_write(edge_serial->serial, | |
2840 | Operaddr >> 16, | |
2841 | Operaddr & 0xFFFF, | |
2842 | be16_to_cpu(rec->len), | |
2843 | &rec->data[0]); | |
1da177e4 | 2844 | if (response < 0) { |
5b9ea932 JS |
2845 | dev_err(&edge_serial->serial->dev->dev, |
2846 | "sram_write failed (%x, %x, %d)\n", | |
2847 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2848 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2849 | break; |
2850 | } | |
2851 | } | |
2852 | ||
984f6868 GKH |
2853 | dev_dbg(dev, "sending exec_dl_code\n"); |
2854 | response = usb_control_msg (edge_serial->serial->dev, | |
2855 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2856 | USB_REQUEST_ION_EXEC_DL_CODE, | |
1da177e4 LT |
2857 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); |
2858 | ||
5b9ea932 | 2859 | release_firmware(fw); |
1da177e4 LT |
2860 | } |
2861 | ||
2862 | ||
2863 | /**************************************************************************** | |
2864 | * edge_startup | |
2865 | ****************************************************************************/ | |
03f0dbf7 | 2866 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2867 | { |
2868 | struct edgeport_serial *edge_serial; | |
1da177e4 | 2869 | struct usb_device *dev; |
984f6868 | 2870 | struct device *ddev = &serial->dev->dev; |
c27f3efc | 2871 | int i; |
6e8cf775 | 2872 | int response; |
cb8eaa8b RK |
2873 | bool interrupt_in_found; |
2874 | bool bulk_in_found; | |
2875 | bool bulk_out_found; | |
6e8cf775 GKH |
2876 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2877 | EDGE_COMPATIBILITY_MASK1, | |
2878 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2879 | |
2880 | dev = serial->dev; | |
2881 | ||
2882 | /* create our private serial structure */ | |
80b6ca48 | 2883 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2884 | if (edge_serial == NULL) { |
441b62c1 | 2885 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2886 | return -ENOMEM; |
2887 | } | |
1da177e4 LT |
2888 | spin_lock_init(&edge_serial->es_lock); |
2889 | edge_serial->serial = serial; | |
2890 | usb_set_serial_data(serial, edge_serial); | |
2891 | ||
2892 | /* get the name for the device from the device */ | |
f10718f5 | 2893 | i = usb_string(dev, dev->descriptor.iManufacturer, |
ad93375a | 2894 | &edge_serial->name[0], MAX_NAME_LEN+1); |
f10718f5 DC |
2895 | if (i < 0) |
2896 | i = 0; | |
ad93375a | 2897 | edge_serial->name[i++] = ' '; |
f10718f5 | 2898 | usb_string(dev, dev->descriptor.iProduct, |
ad93375a | 2899 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
1da177e4 LT |
2900 | |
2901 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2902 | ||
6e8cf775 GKH |
2903 | /* Read the epic descriptor */ |
2904 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2905 | /* memcpy descriptor to Supports structures */ | |
2906 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2907 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2908 | |
6e8cf775 | 2909 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 2910 | get_manufacturing_desc(edge_serial); |
1da177e4 | 2911 | |
6e8cf775 | 2912 | /* get the boot descriptor */ |
03f0dbf7 | 2913 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
2914 | |
2915 | get_product_info(edge_serial); | |
2916 | } | |
1da177e4 LT |
2917 | |
2918 | /* set the number of ports from the manufacturing description */ | |
2919 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2920 | if ((!edge_serial->is_epic) && |
2921 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
984f6868 GKH |
2922 | dev_warn(ddev, |
2923 | "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", | |
6e8cf775 GKH |
2924 | edge_serial->product_info.NumPorts, |
2925 | serial->num_ports); | |
1da177e4 LT |
2926 | } |
2927 | ||
984f6868 | 2928 | dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); |
1da177e4 | 2929 | |
6e8cf775 GKH |
2930 | /* If not an EPiC device */ |
2931 | if (!edge_serial->is_epic) { | |
2932 | /* now load the application firmware into this device */ | |
03f0dbf7 | 2933 | load_application_firmware(edge_serial); |
1da177e4 | 2934 | |
984f6868 | 2935 | dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); |
1da177e4 | 2936 | |
6e8cf775 | 2937 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 2938 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 2939 | |
984f6868 | 2940 | dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); |
6e8cf775 GKH |
2941 | |
2942 | /* set the configuration to use #1 */ | |
984f6868 | 2943 | /* dev_dbg(ddev, "set_configuration 1\n"); */ |
03f0dbf7 | 2944 | /* usb_set_configuration (dev, 1); */ |
6e8cf775 | 2945 | } |
984f6868 | 2946 | dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", |
5b9ea932 JS |
2947 | edge_serial->product_info.FirmwareMajorVersion, |
2948 | edge_serial->product_info.FirmwareMinorVersion, | |
2949 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 2950 | |
03f0dbf7 | 2951 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
2952 | * as the structures aren't created yet. */ |
2953 | ||
6e8cf775 GKH |
2954 | response = 0; |
2955 | ||
2956 | if (edge_serial->is_epic) { | |
03f0dbf7 AC |
2957 | /* EPIC thing, set up our interrupt polling now and our read |
2958 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 2959 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
03f0dbf7 AC |
2960 | for (i = 0; i < serial->interface->altsetting[0] |
2961 | .desc.bNumEndpoints; ++i) { | |
6e8cf775 GKH |
2962 | struct usb_endpoint_descriptor *endpoint; |
2963 | int buffer_size; | |
2964 | ||
03f0dbf7 AC |
2965 | endpoint = &serial->interface->altsetting[0]. |
2966 | endpoint[i].desc; | |
29cc8897 | 2967 | buffer_size = usb_endpoint_maxp(endpoint); |
cb8eaa8b | 2968 | if (!interrupt_in_found && |
6e8cf775 GKH |
2969 | (usb_endpoint_is_int_in(endpoint))) { |
2970 | /* we found a interrupt in endpoint */ | |
984f6868 | 2971 | dev_dbg(ddev, "found interrupt in\n"); |
6e8cf775 GKH |
2972 | |
2973 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
2974 | edge_serial->interrupt_read_urb = |
2975 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 2976 | if (!edge_serial->interrupt_read_urb) { |
984f6868 | 2977 | dev_err(ddev, "out of memory\n"); |
6e8cf775 GKH |
2978 | return -ENOMEM; |
2979 | } | |
03f0dbf7 AC |
2980 | edge_serial->interrupt_in_buffer = |
2981 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 2982 | if (!edge_serial->interrupt_in_buffer) { |
984f6868 | 2983 | dev_err(ddev, "out of memory\n"); |
6e8cf775 GKH |
2984 | usb_free_urb(edge_serial->interrupt_read_urb); |
2985 | return -ENOMEM; | |
2986 | } | |
03f0dbf7 AC |
2987 | edge_serial->interrupt_in_endpoint = |
2988 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
2989 | |
2990 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
2991 | usb_fill_int_urb( |
2992 | edge_serial->interrupt_read_urb, | |
2993 | dev, | |
2994 | usb_rcvintpipe(dev, | |
2995 | endpoint->bEndpointAddress), | |
2996 | edge_serial->interrupt_in_buffer, | |
2997 | buffer_size, | |
2998 | edge_interrupt_callback, | |
2999 | edge_serial, | |
3000 | endpoint->bInterval); | |
6e8cf775 | 3001 | |
cb8eaa8b | 3002 | interrupt_in_found = true; |
6e8cf775 GKH |
3003 | } |
3004 | ||
cb8eaa8b | 3005 | if (!bulk_in_found && |
03f0dbf7 | 3006 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 | 3007 | /* we found a bulk in endpoint */ |
984f6868 | 3008 | dev_dbg(ddev, "found bulk in\n"); |
6e8cf775 GKH |
3009 | |
3010 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3011 | edge_serial->read_urb = |
3012 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3013 | if (!edge_serial->read_urb) { |
984f6868 | 3014 | dev_err(ddev, "out of memory\n"); |
6e8cf775 GKH |
3015 | return -ENOMEM; |
3016 | } | |
03f0dbf7 AC |
3017 | edge_serial->bulk_in_buffer = |
3018 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3019 | if (!edge_serial->bulk_in_buffer) { |
194343d9 | 3020 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3021 | usb_free_urb(edge_serial->read_urb); |
3022 | return -ENOMEM; | |
3023 | } | |
03f0dbf7 AC |
3024 | edge_serial->bulk_in_endpoint = |
3025 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3026 | |
3027 | /* set up our bulk in urb */ | |
3028 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
3029 | usb_rcvbulkpipe(dev, |
3030 | endpoint->bEndpointAddress), | |
3031 | edge_serial->bulk_in_buffer, | |
29cc8897 | 3032 | usb_endpoint_maxp(endpoint), |
03f0dbf7 AC |
3033 | edge_bulk_in_callback, |
3034 | edge_serial); | |
cb8eaa8b | 3035 | bulk_in_found = true; |
6e8cf775 GKH |
3036 | } |
3037 | ||
cb8eaa8b | 3038 | if (!bulk_out_found && |
6e8cf775 GKH |
3039 | (usb_endpoint_is_bulk_out(endpoint))) { |
3040 | /* we found a bulk out endpoint */ | |
984f6868 | 3041 | dev_dbg(ddev, "found bulk out\n"); |
03f0dbf7 AC |
3042 | edge_serial->bulk_out_endpoint = |
3043 | endpoint->bEndpointAddress; | |
cb8eaa8b | 3044 | bulk_out_found = true; |
6e8cf775 GKH |
3045 | } |
3046 | } | |
3047 | ||
cb8eaa8b | 3048 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
984f6868 | 3049 | dev_err(ddev, "Error - the proper endpoints were not found!\n"); |
6e8cf775 GKH |
3050 | return -ENODEV; |
3051 | } | |
3052 | ||
3053 | /* start interrupt read for this edgeport this interrupt will | |
3054 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
3055 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
3056 | GFP_KERNEL); | |
6e8cf775 | 3057 | if (response) |
984f6868 | 3058 | dev_err(ddev, "%s - Error %d submitting control urb\n", |
194343d9 | 3059 | __func__, response); |
6e8cf775 GKH |
3060 | } |
3061 | return response; | |
1da177e4 LT |
3062 | } |
3063 | ||
3064 | ||
3065 | /**************************************************************************** | |
f9c99bb8 | 3066 | * edge_disconnect |
1da177e4 LT |
3067 | * This function is called whenever the device is removed from the usb bus. |
3068 | ****************************************************************************/ | |
f9c99bb8 | 3069 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 3070 | { |
6e8cf775 | 3071 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 3072 | |
1da177e4 | 3073 | /* stop reads and writes on all ports */ |
6e8cf775 GKH |
3074 | /* free up our endpoint stuff */ |
3075 | if (edge_serial->is_epic) { | |
74ac07e8 | 3076 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
3077 | usb_free_urb(edge_serial->interrupt_read_urb); |
3078 | kfree(edge_serial->interrupt_in_buffer); | |
3079 | ||
74ac07e8 | 3080 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
3081 | usb_free_urb(edge_serial->read_urb); |
3082 | kfree(edge_serial->bulk_in_buffer); | |
3083 | } | |
f9c99bb8 AS |
3084 | } |
3085 | ||
3086 | ||
3087 | /**************************************************************************** | |
3088 | * edge_release | |
3089 | * This function is called when the device structure is deallocated. | |
3090 | ****************************************************************************/ | |
3091 | static void edge_release(struct usb_serial *serial) | |
3092 | { | |
3093 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
6e8cf775 GKH |
3094 | |
3095 | kfree(edge_serial); | |
1da177e4 LT |
3096 | } |
3097 | ||
c27f3efc JH |
3098 | static int edge_port_probe(struct usb_serial_port *port) |
3099 | { | |
3100 | struct edgeport_port *edge_port; | |
3101 | ||
3102 | edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); | |
3103 | if (!edge_port) | |
3104 | return -ENOMEM; | |
3105 | ||
3106 | spin_lock_init(&edge_port->ep_lock); | |
3107 | edge_port->port = port; | |
3108 | ||
3109 | usb_set_serial_port_data(port, edge_port); | |
3110 | ||
3111 | return 0; | |
3112 | } | |
3113 | ||
3114 | static int edge_port_remove(struct usb_serial_port *port) | |
3115 | { | |
3116 | struct edgeport_port *edge_port; | |
3117 | ||
3118 | edge_port = usb_get_serial_port_data(port); | |
3119 | kfree(edge_port); | |
3120 | ||
3121 | return 0; | |
3122 | } | |
3123 | ||
68e24113 | 3124 | module_usb_serial_driver(serial_drivers, id_table_combined); |
1da177e4 | 3125 | |
03f0dbf7 AC |
3126 | MODULE_AUTHOR(DRIVER_AUTHOR); |
3127 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3128 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3129 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3130 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3131 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3132 | MODULE_FIRMWARE("edgeport/down2.fw"); |