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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * Edgeport/4 | |
14 | * Edgeport/4t | |
15 | * Edgeport/2 | |
16 | * Edgeport/4i | |
17 | * Edgeport/2i | |
18 | * Edgeport/421 | |
19 | * Edgeport/21 | |
20 | * Rapidport/4 | |
21 | * Edgeport/8 | |
22 | * Edgeport/2D8 | |
23 | * Edgeport/4D8 | |
24 | * Edgeport/8i | |
25 | * | |
26 | * For questions or problems with this driver, contact Inside Out | |
27 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
28 | * or Al Borchers <alborchers@steinerpoint.com>. | |
29 | * | |
1da177e4 LT |
30 | */ |
31 | ||
1da177e4 LT |
32 | #include <linux/kernel.h> |
33 | #include <linux/jiffies.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/tty_driver.h> | |
39 | #include <linux/tty_flip.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/serial.h> | |
43 | #include <linux/ioctl.h> | |
44 | #include <linux/wait.h> | |
5b9ea932 JS |
45 | #include <linux/firmware.h> |
46 | #include <linux/ihex.h> | |
03f0dbf7 | 47 | #include <linux/uaccess.h> |
1da177e4 | 48 | #include <linux/usb.h> |
a969888c | 49 | #include <linux/usb/serial.h> |
1da177e4 LT |
50 | #include "io_edgeport.h" |
51 | #include "io_ionsp.h" /* info for the iosp messages */ | |
52 | #include "io_16654.h" /* 16654 UART defines */ | |
53 | ||
54 | /* | |
55 | * Version Information | |
56 | */ | |
57 | #define DRIVER_VERSION "v2.7" | |
58 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
59 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
60 | ||
1da177e4 LT |
61 | #define MAX_NAME_LEN 64 |
62 | ||
63 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
64 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
65 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
66 | ||
67 | /* receive port state */ | |
68 | enum RXSTATE { | |
03f0dbf7 AC |
69 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
70 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
71 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
72 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
73 | }; |
74 | ||
75 | ||
03f0dbf7 AC |
76 | /* Transmit Fifo |
77 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
78 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
79 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
80 | */ | |
81 | struct TxFifo { | |
82 | unsigned int head; /* index to head pointer (write) */ | |
83 | unsigned int tail; /* index to tail pointer (read) */ | |
84 | unsigned int count; /* Bytes in queue */ | |
85 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
86 | unsigned char *fifo; /* allocated Buffer */ | |
87 | }; | |
88 | ||
89 | /* This structure holds all of the local port information */ | |
90 | struct edgeport_port { | |
91 | __u16 txCredits; /* our current credits for this port */ | |
92 | __u16 maxTxCredits; /* the max size of the port */ | |
93 | ||
94 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
95 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 96 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
97 | spinlock_t ep_lock; |
98 | ||
99 | __u8 shadowLCR; /* last LCR value received */ | |
100 | __u8 shadowMCR; /* last MCR value received */ | |
101 | __u8 shadowMSR; /* last MSR value received */ | |
102 | __u8 shadowLSR; /* last LSR value received */ | |
103 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
104 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
105 | __u8 validDataMask; | |
106 | __u32 baudRate; | |
107 | ||
cb8eaa8b RK |
108 | bool open; |
109 | bool openPending; | |
110 | bool commandPending; | |
111 | bool closePending; | |
112 | bool chaseResponsePending; | |
1da177e4 LT |
113 | |
114 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
115 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
116 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
117 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
118 | ||
119 | struct async_icount icount; | |
120 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
121 | }; | |
122 | ||
123 | ||
124 | /* This structure holds all of the individual device information */ | |
125 | struct edgeport_serial { | |
ad93375a | 126 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
127 | |
128 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
129 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
130 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
131 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
132 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
133 | |
134 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
135 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
136 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
137 | |
138 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
139 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
140 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 141 | bool read_in_progress; |
1da177e4 LT |
142 | spinlock_t es_lock; |
143 | ||
144 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
145 | ||
146 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
147 | ||
148 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
149 | __u8 rxHeader1; /* receive header byte 1 */ | |
150 | __u8 rxHeader2; /* receive header byte 2 */ | |
151 | __u8 rxHeader3; /* receive header byte 3 */ | |
152 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
153 | __u8 rxStatusCode; /* the receive status code */ | |
154 | __u8 rxStatusParam; /* the receive status paramater */ | |
155 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
156 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
157 | }; | |
158 | ||
159 | /* baud rate information */ | |
160 | struct divisor_table_entry { | |
161 | __u32 BaudRate; | |
162 | __u16 Divisor; | |
163 | }; | |
164 | ||
03f0dbf7 AC |
165 | /* |
166 | * Define table of divisors for Rev A EdgePort/4 hardware | |
167 | * These assume a 3.6864MHz crystal, the standard /16, and | |
168 | * MCR.7 = 0. | |
169 | */ | |
170 | ||
4c4c9432 | 171 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
172 | { 50, 4608}, |
173 | { 75, 3072}, | |
174 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
175 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
176 | { 150, 1536}, |
177 | { 300, 768}, | |
178 | { 600, 384}, | |
179 | { 1200, 192}, | |
180 | { 1800, 128}, | |
181 | { 2400, 96}, | |
182 | { 4800, 48}, | |
183 | { 7200, 32}, | |
184 | { 9600, 24}, | |
185 | { 14400, 16}, | |
186 | { 19200, 12}, | |
187 | { 38400, 6}, | |
188 | { 57600, 4}, | |
189 | { 115200, 2}, | |
190 | { 230400, 1}, | |
191 | }; | |
192 | ||
193 | /* local variables */ | |
90ab5ee9 | 194 | static bool debug; |
1da177e4 | 195 | |
36ccce49 GKH |
196 | /* Number of outstanding Command Write Urbs */ |
197 | static atomic_t CmdUrbs = ATOMIC_INIT(0); | |
1da177e4 LT |
198 | |
199 | ||
200 | /* local function prototypes */ | |
201 | ||
202 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
203 | static void edge_interrupt_callback(struct urb *urb); |
204 | static void edge_bulk_in_callback(struct urb *urb); | |
205 | static void edge_bulk_out_data_callback(struct urb *urb); | |
206 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
207 | |
208 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 209 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 210 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
211 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
212 | const unsigned char *buf, int count); | |
213 | static int edge_write_room(struct tty_struct *tty); | |
214 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
215 | static void edge_throttle(struct tty_struct *tty); | |
216 | static void edge_unthrottle(struct tty_struct *tty); | |
217 | static void edge_set_termios(struct tty_struct *tty, | |
218 | struct usb_serial_port *port, | |
219 | struct ktermios *old_termios); | |
00a0d0d6 | 220 | static int edge_ioctl(struct tty_struct *tty, |
03f0dbf7 AC |
221 | unsigned int cmd, unsigned long arg); |
222 | static void edge_break(struct tty_struct *tty, int break_state); | |
60b33c13 | 223 | static int edge_tiocmget(struct tty_struct *tty); |
20b9d177 | 224 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 225 | unsigned int set, unsigned int clear); |
0bca1b91 AC |
226 | static int edge_get_icount(struct tty_struct *tty, |
227 | struct serial_icounter_struct *icount); | |
03f0dbf7 | 228 | static int edge_startup(struct usb_serial *serial); |
f9c99bb8 AS |
229 | static void edge_disconnect(struct usb_serial *serial); |
230 | static void edge_release(struct usb_serial *serial); | |
1da177e4 LT |
231 | |
232 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
233 | ||
1da177e4 | 234 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
235 | |
236 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
237 | unsigned char *buffer, __u16 bufferLength); | |
238 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
239 | __u8 byte2, __u8 byte3); | |
240 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, | |
241 | unsigned char *data, int length); | |
242 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); | |
243 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
244 | __u8 lsr, __u8 data); | |
245 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
246 | __u8 param); | |
984f6868 | 247 | static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); |
03f0dbf7 AC |
248 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
249 | int baudRate); | |
250 | static void change_port_settings(struct tty_struct *tty, | |
251 | struct edgeport_port *edge_port, | |
252 | struct ktermios *old_termios); | |
253 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
254 | __u8 regNum, __u8 regValue); | |
255 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
256 | unsigned char *buffer, int writeLength); | |
257 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
258 | struct edgeport_port *edge_port); | |
259 | ||
260 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
261 | __u16 length, const __u8 *data); | |
262 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
263 | __u16 length, __u8 *data); | |
264 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
265 | __u16 length, const __u8 *data); | |
266 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
267 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
268 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
269 | ||
270 | static void unicode_to_ascii(char *string, int buflen, | |
271 | __le16 *unicode, int unicode_size); | |
272 | ||
273 | ||
274 | /* ************************************************************************ */ | |
275 | /* ************************************************************************ */ | |
276 | /* ************************************************************************ */ | |
277 | /* ************************************************************************ */ | |
1da177e4 LT |
278 | |
279 | /************************************************************************ | |
280 | * * | |
281 | * update_edgeport_E2PROM() Compare current versions of * | |
282 | * Boot ROM and Manufacture * | |
283 | * Descriptors with versions * | |
284 | * embedded in this driver * | |
285 | * * | |
286 | ************************************************************************/ | |
03f0dbf7 | 287 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 | 288 | { |
984f6868 | 289 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
290 | __u32 BootCurVer; |
291 | __u32 BootNewVer; | |
5b9ea932 JS |
292 | __u8 BootMajorVersion; |
293 | __u8 BootMinorVersion; | |
294 | __u16 BootBuildNumber; | |
295 | __u32 Bootaddr; | |
296 | const struct ihex_binrec *rec; | |
297 | const struct firmware *fw; | |
298 | const char *fw_name; | |
1da177e4 LT |
299 | int response; |
300 | ||
1da177e4 | 301 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
302 | case EDGE_DOWNLOAD_FILE_I930: |
303 | fw_name = "edgeport/boot.fw"; | |
304 | break; | |
305 | case EDGE_DOWNLOAD_FILE_80251: | |
306 | fw_name = "edgeport/boot2.fw"; | |
307 | break; | |
308 | default: | |
309 | return; | |
1da177e4 LT |
310 | } |
311 | ||
5b9ea932 JS |
312 | response = request_ihex_firmware(&fw, fw_name, |
313 | &edge_serial->serial->dev->dev); | |
314 | if (response) { | |
984f6868 | 315 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
316 | fw_name, response); |
317 | return; | |
318 | } | |
319 | ||
320 | rec = (const struct ihex_binrec *)fw->data; | |
321 | BootMajorVersion = rec->data[0]; | |
322 | BootMinorVersion = rec->data[1]; | |
323 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
324 | ||
03f0dbf7 | 325 | /* Check Boot Image Version */ |
1da177e4 LT |
326 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
327 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
328 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
329 | ||
330 | BootNewVer = (BootMajorVersion << 24) + | |
331 | (BootMinorVersion << 16) + | |
5b9ea932 | 332 | BootBuildNumber; |
1da177e4 | 333 | |
984f6868 | 334 | dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", |
1da177e4 LT |
335 | edge_serial->boot_descriptor.MajorVersion, |
336 | edge_serial->boot_descriptor.MinorVersion, | |
337 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
338 | ||
339 | ||
340 | if (BootNewVer > BootCurVer) { | |
984f6868 | 341 | dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", |
1da177e4 LT |
342 | edge_serial->boot_descriptor.MajorVersion, |
343 | edge_serial->boot_descriptor.MinorVersion, | |
344 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 345 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 | 346 | |
984f6868 | 347 | dev_dbg(dev, "Downloading new Boot Image\n"); |
1da177e4 | 348 | |
5b9ea932 JS |
349 | for (rec = ihex_next_binrec(rec); rec; |
350 | rec = ihex_next_binrec(rec)) { | |
351 | Bootaddr = be32_to_cpu(rec->addr); | |
352 | response = rom_write(edge_serial->serial, | |
353 | Bootaddr >> 16, | |
354 | Bootaddr & 0xFFFF, | |
355 | be16_to_cpu(rec->len), | |
356 | &rec->data[0]); | |
1da177e4 | 357 | if (response < 0) { |
5b9ea932 JS |
358 | dev_err(&edge_serial->serial->dev->dev, |
359 | "rom_write failed (%x, %x, %d)\n", | |
360 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
361 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
362 | break; |
363 | } | |
364 | } | |
365 | } else { | |
984f6868 | 366 | dev_dbg(dev, "Boot Image -- already up to date\n"); |
1da177e4 | 367 | } |
5b9ea932 | 368 | release_firmware(fw); |
1da177e4 LT |
369 | } |
370 | ||
1da177e4 LT |
371 | #if 0 |
372 | /************************************************************************ | |
373 | * | |
374 | * Get string descriptor from device | |
375 | * | |
376 | ************************************************************************/ | |
03f0dbf7 AC |
377 | static int get_string_desc(struct usb_device *dev, int Id, |
378 | struct usb_string_descriptor **pRetDesc) | |
1da177e4 LT |
379 | { |
380 | struct usb_string_descriptor StringDesc; | |
381 | struct usb_string_descriptor *pStringDesc; | |
382 | ||
984f6868 | 383 | dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); |
1da177e4 | 384 | |
03f0dbf7 AC |
385 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
386 | sizeof(StringDesc))) | |
1da177e4 | 387 | return 0; |
1da177e4 | 388 | |
03f0dbf7 AC |
389 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
390 | if (!pStringDesc) | |
1da177e4 | 391 | return -1; |
1da177e4 | 392 | |
03f0dbf7 AC |
393 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
394 | StringDesc.bLength)) { | |
1da177e4 LT |
395 | kfree(pStringDesc); |
396 | return -1; | |
397 | } | |
398 | ||
399 | *pRetDesc = pStringDesc; | |
400 | return 0; | |
401 | } | |
402 | #endif | |
403 | ||
984f6868 GKH |
404 | static void dump_product_info(struct edgeport_serial *edge_serial, |
405 | struct edgeport_product_info *product_info) | |
6e8cf775 | 406 | { |
984f6868 GKH |
407 | struct device *dev = &edge_serial->serial->dev->dev; |
408 | ||
03f0dbf7 | 409 | /* Dump Product Info structure */ |
984f6868 GKH |
410 | dev_dbg(dev, "**Product Information:\n"); |
411 | dev_dbg(dev, " ProductId %x\n", product_info->ProductId); | |
412 | dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); | |
413 | dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); | |
414 | dev_dbg(dev, " IsServer %d\n", product_info->IsServer); | |
415 | dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); | |
416 | dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); | |
417 | dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); | |
418 | dev_dbg(dev, " RomSize %d\n", product_info->RomSize); | |
419 | dev_dbg(dev, " RamSize %d\n", product_info->RamSize); | |
420 | dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); | |
421 | dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); | |
422 | dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", | |
423 | product_info->BootMajorVersion, | |
424 | product_info->BootMinorVersion, | |
425 | le16_to_cpu(product_info->BootBuildNumber)); | |
426 | dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", | |
427 | product_info->FirmwareMajorVersion, | |
428 | product_info->FirmwareMinorVersion, | |
429 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
430 | dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", | |
431 | product_info->ManufactureDescDate[0], | |
432 | product_info->ManufactureDescDate[1], | |
433 | product_info->ManufactureDescDate[2]+1900); | |
434 | dev_dbg(dev, " iDownloadFile 0x%x\n", | |
435 | product_info->iDownloadFile); | |
436 | dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); | |
6e8cf775 GKH |
437 | } |
438 | ||
1da177e4 LT |
439 | static void get_product_info(struct edgeport_serial *edge_serial) |
440 | { | |
441 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
442 | ||
03f0dbf7 AC |
443 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
444 | ||
445 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
446 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
447 | product_info->ProdInfoVer = 0; | |
448 | ||
449 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
450 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
451 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
452 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
453 | ||
454 | product_info->BootMajorVersion = | |
455 | edge_serial->boot_descriptor.MajorVersion; | |
456 | product_info->BootMinorVersion = | |
457 | edge_serial->boot_descriptor.MinorVersion; | |
458 | product_info->BootBuildNumber = | |
459 | edge_serial->boot_descriptor.BuildNumber; | |
460 | ||
461 | memcpy(product_info->ManufactureDescDate, | |
462 | edge_serial->manuf_descriptor.DescDate, | |
463 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
464 | ||
465 | /* check if this is 2nd generation hardware */ | |
466 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
467 | & ION_DEVICE_ID_80251_NETCHIP) | |
468 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
469 | else | |
470 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
984f6868 | 471 | |
03f0dbf7 | 472 | /* Determine Product type and set appropriate flags */ |
1da177e4 | 473 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
474 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
475 | case ION_DEVICE_ID_EDGEPORT_4T: | |
476 | case ION_DEVICE_ID_EDGEPORT_4: | |
477 | case ION_DEVICE_ID_EDGEPORT_2: | |
478 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
479 | case ION_DEVICE_ID_EDGEPORT_8: | |
480 | case ION_DEVICE_ID_EDGEPORT_421: | |
481 | case ION_DEVICE_ID_EDGEPORT_21: | |
482 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
483 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
484 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
485 | product_info->IsRS232 = 1; | |
486 | break; | |
1da177e4 | 487 | |
03f0dbf7 AC |
488 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
489 | product_info->IsRS422 = 1; | |
490 | product_info->IsRS485 = 1; | |
491 | break; | |
1da177e4 | 492 | |
03f0dbf7 AC |
493 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
494 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
495 | product_info->IsRS422 = 1; | |
496 | break; | |
1da177e4 LT |
497 | } |
498 | ||
984f6868 | 499 | dump_product_info(edge_serial, product_info); |
6e8cf775 | 500 | } |
1da177e4 | 501 | |
6e8cf775 GKH |
502 | static int get_epic_descriptor(struct edgeport_serial *ep) |
503 | { | |
504 | int result; | |
505 | struct usb_serial *serial = ep->serial; | |
506 | struct edgeport_product_info *product_info = &ep->product_info; | |
507 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
508 | struct edge_compatibility_bits *bits; | |
984f6868 | 509 | struct device *dev = &serial->dev->dev; |
6e8cf775 GKH |
510 | |
511 | ep->is_epic = 0; | |
512 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
513 | USB_REQUEST_ION_GET_EPIC_DESC, | |
514 | 0xC0, 0x00, 0x00, | |
515 | &ep->epic_descriptor, | |
516 | sizeof(struct edge_compatibility_descriptor), | |
517 | 300); | |
518 | ||
6e8cf775 GKH |
519 | if (result > 0) { |
520 | ep->is_epic = 1; | |
521 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
522 | ||
03f0dbf7 AC |
523 | product_info->NumPorts = epic->NumPorts; |
524 | product_info->ProdInfoVer = 0; | |
525 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
526 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
527 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
528 | product_info->iDownloadFile = epic->iDownloadFile; | |
529 | product_info->EpicVer = epic->EpicVer; | |
530 | product_info->Epic = epic->Supports; | |
531 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
984f6868 | 532 | dump_product_info(ep, product_info); |
6e8cf775 GKH |
533 | |
534 | bits = &ep->epic_descriptor.Supports; | |
984f6868 GKH |
535 | dev_dbg(dev, "**EPIC descriptor:\n"); |
536 | dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
537 | dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); | |
538 | dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); | |
539 | dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); | |
540 | dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
541 | dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
542 | dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
543 | dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
544 | dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
545 | dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
546 | dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
547 | dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
548 | dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); | |
6e8cf775 GKH |
549 | } |
550 | ||
551 | return result; | |
1da177e4 LT |
552 | } |
553 | ||
554 | ||
555 | /************************************************************************/ | |
556 | /************************************************************************/ | |
557 | /* U S B C A L L B A C K F U N C T I O N S */ | |
558 | /* U S B C A L L B A C K F U N C T I O N S */ | |
559 | /************************************************************************/ | |
560 | /************************************************************************/ | |
561 | ||
562 | /***************************************************************************** | |
563 | * edge_interrupt_callback | |
03f0dbf7 | 564 | * this is the callback function for when we have received data on the |
1da177e4 LT |
565 | * interrupt endpoint. |
566 | *****************************************************************************/ | |
03f0dbf7 | 567 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 568 | { |
984f6868 GKH |
569 | struct edgeport_serial *edge_serial = urb->context; |
570 | struct device *dev; | |
1da177e4 LT |
571 | struct edgeport_port *edge_port; |
572 | struct usb_serial_port *port; | |
4a90f09b | 573 | struct tty_struct *tty; |
1da177e4 LT |
574 | unsigned char *data = urb->transfer_buffer; |
575 | int length = urb->actual_length; | |
576 | int bytes_avail; | |
577 | int position; | |
578 | int txCredits; | |
579 | int portNumber; | |
580 | int result; | |
2a393f5f | 581 | int status = urb->status; |
1da177e4 | 582 | |
2a393f5f | 583 | switch (status) { |
1da177e4 LT |
584 | case 0: |
585 | /* success */ | |
586 | break; | |
587 | case -ECONNRESET: | |
588 | case -ENOENT: | |
589 | case -ESHUTDOWN: | |
590 | /* this urb is terminated, clean up */ | |
984f6868 | 591 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); |
1da177e4 LT |
592 | return; |
593 | default: | |
984f6868 | 594 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); |
1da177e4 LT |
595 | goto exit; |
596 | } | |
597 | ||
984f6868 GKH |
598 | dev = &edge_serial->serial->dev->dev; |
599 | ||
03f0dbf7 | 600 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 601 | if (length) { |
984f6868 | 602 | usb_serial_debug_data(debug, dev, __func__, length, data); |
1da177e4 LT |
603 | |
604 | if (length > 1) { | |
605 | bytes_avail = data[0] | (data[1] << 8); | |
606 | if (bytes_avail) { | |
607 | spin_lock(&edge_serial->es_lock); | |
608 | edge_serial->rxBytesAvail += bytes_avail; | |
984f6868 GKH |
609 | dev_dbg(dev, |
610 | "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", | |
611 | __func__, bytes_avail, | |
612 | edge_serial->rxBytesAvail, | |
613 | edge_serial->read_in_progress); | |
1da177e4 LT |
614 | |
615 | if (edge_serial->rxBytesAvail > 0 && | |
616 | !edge_serial->read_in_progress) { | |
984f6868 | 617 | dev_dbg(dev, "%s - posting a read\n", __func__); |
cb8eaa8b | 618 | edge_serial->read_in_progress = true; |
1da177e4 | 619 | |
03f0dbf7 AC |
620 | /* we have pending bytes on the |
621 | bulk in pipe, send a request */ | |
1da177e4 LT |
622 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
623 | if (result) { | |
984f6868 GKH |
624 | dev_err(dev, |
625 | "%s - usb_submit_urb(read bulk) failed with result = %d\n", | |
626 | __func__, result); | |
cb8eaa8b | 627 | edge_serial->read_in_progress = false; |
1da177e4 LT |
628 | } |
629 | } | |
630 | spin_unlock(&edge_serial->es_lock); | |
631 | } | |
632 | } | |
633 | /* grab the txcredits for the ports if available */ | |
634 | position = 2; | |
635 | portNumber = 0; | |
03f0dbf7 AC |
636 | while ((position < length) && |
637 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
638 | txCredits = data[position] | (data[position+1] << 8); |
639 | if (txCredits) { | |
640 | port = edge_serial->serial->port[portNumber]; | |
641 | edge_port = usb_get_serial_port_data(port); | |
642 | if (edge_port->open) { | |
643 | spin_lock(&edge_port->ep_lock); | |
644 | edge_port->txCredits += txCredits; | |
645 | spin_unlock(&edge_port->ep_lock); | |
984f6868 GKH |
646 | dev_dbg(dev, "%s - txcredits for port%d = %d\n", |
647 | __func__, portNumber, | |
648 | edge_port->txCredits); | |
1da177e4 | 649 | |
03f0dbf7 AC |
650 | /* tell the tty driver that something |
651 | has changed */ | |
4a90f09b AC |
652 | tty = tty_port_tty_get( |
653 | &edge_port->port->port); | |
654 | if (tty) { | |
655 | tty_wakeup(tty); | |
656 | tty_kref_put(tty); | |
657 | } | |
03f0dbf7 AC |
658 | /* Since we have more credit, check |
659 | if more data can be sent */ | |
660 | send_more_port_data(edge_serial, | |
661 | edge_port); | |
1da177e4 LT |
662 | } |
663 | } | |
664 | position += 2; | |
665 | ++portNumber; | |
666 | } | |
667 | } | |
668 | ||
669 | exit: | |
03f0dbf7 AC |
670 | result = usb_submit_urb(urb, GFP_ATOMIC); |
671 | if (result) | |
672 | dev_err(&urb->dev->dev, | |
673 | "%s - Error %d submitting control urb\n", | |
674 | __func__, result); | |
1da177e4 LT |
675 | } |
676 | ||
677 | ||
678 | /***************************************************************************** | |
679 | * edge_bulk_in_callback | |
03f0dbf7 | 680 | * this is the callback function for when we have received data on the |
1da177e4 LT |
681 | * bulk in endpoint. |
682 | *****************************************************************************/ | |
03f0dbf7 | 683 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 684 | { |
cdc97792 | 685 | struct edgeport_serial *edge_serial = urb->context; |
984f6868 | 686 | struct device *dev; |
1da177e4 | 687 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 688 | int retval; |
1da177e4 | 689 | __u16 raw_data_length; |
2a393f5f | 690 | int status = urb->status; |
1da177e4 | 691 | |
2a393f5f | 692 | if (status) { |
984f6868 GKH |
693 | dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
694 | __func__, status); | |
cb8eaa8b | 695 | edge_serial->read_in_progress = false; |
1da177e4 LT |
696 | return; |
697 | } | |
698 | ||
699 | if (urb->actual_length == 0) { | |
984f6868 | 700 | dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); |
cb8eaa8b | 701 | edge_serial->read_in_progress = false; |
1da177e4 LT |
702 | return; |
703 | } | |
704 | ||
984f6868 | 705 | dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
706 | raw_data_length = urb->actual_length; |
707 | ||
984f6868 | 708 | usb_serial_debug_data(debug, dev, __func__, raw_data_length, data); |
1da177e4 LT |
709 | |
710 | spin_lock(&edge_serial->es_lock); | |
711 | ||
712 | /* decrement our rxBytes available by the number that we just got */ | |
713 | edge_serial->rxBytesAvail -= raw_data_length; | |
714 | ||
984f6868 GKH |
715 | dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, |
716 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 717 | |
03f0dbf7 | 718 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
719 | |
720 | /* check to see if there's any more data for us to read */ | |
721 | if (edge_serial->rxBytesAvail > 0) { | |
984f6868 | 722 | dev_dbg(dev, "%s - posting a read\n", __func__); |
2a393f5f GKH |
723 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
724 | if (retval) { | |
984f6868 GKH |
725 | dev_err(dev, |
726 | "%s - usb_submit_urb(read bulk) failed, retval = %d\n", | |
727 | __func__, retval); | |
cb8eaa8b | 728 | edge_serial->read_in_progress = false; |
1da177e4 LT |
729 | } |
730 | } else { | |
cb8eaa8b | 731 | edge_serial->read_in_progress = false; |
1da177e4 LT |
732 | } |
733 | ||
734 | spin_unlock(&edge_serial->es_lock); | |
735 | } | |
736 | ||
737 | ||
738 | /***************************************************************************** | |
739 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
740 | * this is the callback function for when we have finished sending |
741 | * serial data on the bulk out endpoint. | |
1da177e4 | 742 | *****************************************************************************/ |
03f0dbf7 | 743 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 744 | { |
cdc97792 | 745 | struct edgeport_port *edge_port = urb->context; |
1da177e4 | 746 | struct tty_struct *tty; |
2a393f5f | 747 | int status = urb->status; |
1da177e4 | 748 | |
2a393f5f | 749 | if (status) { |
984f6868 GKH |
750 | dev_dbg(&urb->dev->dev, |
751 | "%s - nonzero write bulk status received: %d\n", | |
752 | __func__, status); | |
1da177e4 LT |
753 | } |
754 | ||
4a90f09b | 755 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
756 | |
757 | if (tty && edge_port->open) { | |
03f0dbf7 AC |
758 | /* let the tty driver wakeup if it has a special |
759 | write_wakeup function */ | |
1da177e4 LT |
760 | tty_wakeup(tty); |
761 | } | |
4a90f09b | 762 | tty_kref_put(tty); |
1da177e4 | 763 | |
03f0dbf7 | 764 | /* Release the Write URB */ |
cb8eaa8b | 765 | edge_port->write_in_progress = false; |
1da177e4 | 766 | |
03f0dbf7 AC |
767 | /* Check if more data needs to be sent */ |
768 | send_more_port_data((struct edgeport_serial *) | |
769 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
770 | } |
771 | ||
772 | ||
773 | /***************************************************************************** | |
774 | * BulkOutCmdCallback | |
03f0dbf7 AC |
775 | * this is the callback function for when we have finished sending a |
776 | * command on the bulk out endpoint. | |
1da177e4 | 777 | *****************************************************************************/ |
03f0dbf7 | 778 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 779 | { |
cdc97792 | 780 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
781 | struct tty_struct *tty; |
782 | int status = urb->status; | |
783 | ||
96c706ed | 784 | atomic_dec(&CmdUrbs); |
984f6868 GKH |
785 | dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", |
786 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
787 | |
788 | ||
789 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 790 | kfree(urb->transfer_buffer); |
1da177e4 LT |
791 | |
792 | /* Free the command urb */ | |
03f0dbf7 | 793 | usb_free_urb(urb); |
1da177e4 LT |
794 | |
795 | if (status) { | |
984f6868 GKH |
796 | dev_dbg(&urb->dev->dev, |
797 | "%s - nonzero write bulk status received: %d\n", | |
798 | __func__, status); | |
1da177e4 LT |
799 | return; |
800 | } | |
801 | ||
802 | /* Get pointer to tty */ | |
4a90f09b | 803 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
804 | |
805 | /* tell the tty driver that something has changed */ | |
806 | if (tty && edge_port->open) | |
807 | tty_wakeup(tty); | |
4a90f09b | 808 | tty_kref_put(tty); |
1da177e4 LT |
809 | |
810 | /* we have completed the command */ | |
cb8eaa8b | 811 | edge_port->commandPending = false; |
1da177e4 LT |
812 | wake_up(&edge_port->wait_command); |
813 | } | |
814 | ||
815 | ||
816 | /***************************************************************************** | |
817 | * Driver tty interface functions | |
818 | *****************************************************************************/ | |
819 | ||
820 | /***************************************************************************** | |
821 | * SerialOpen | |
822 | * this function is called by the tty driver when a port is opened | |
823 | * If successful, we return 0 | |
824 | * Otherwise we return a negative error number. | |
825 | *****************************************************************************/ | |
a509a7e4 | 826 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
827 | { |
828 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
984f6868 | 829 | struct device *dev = &port->dev; |
1da177e4 LT |
830 | struct usb_serial *serial; |
831 | struct edgeport_serial *edge_serial; | |
832 | int response; | |
833 | ||
1da177e4 LT |
834 | if (edge_port == NULL) |
835 | return -ENODEV; | |
836 | ||
03f0dbf7 AC |
837 | /* see if we've set up our endpoint info yet (can't set it up |
838 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
839 | serial = port->serial; |
840 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 841 | if (edge_serial == NULL) |
1da177e4 | 842 | return -ENODEV; |
1da177e4 LT |
843 | if (edge_serial->interrupt_in_buffer == NULL) { |
844 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 845 | |
1da177e4 | 846 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
847 | edge_serial->interrupt_in_buffer = |
848 | port0->interrupt_in_buffer; | |
849 | edge_serial->interrupt_in_endpoint = | |
850 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
851 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
852 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
853 | edge_serial->bulk_in_endpoint = |
854 | port0->bulk_in_endpointAddress; | |
1da177e4 | 855 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
856 | edge_serial->bulk_out_endpoint = |
857 | port0->bulk_out_endpointAddress; | |
858 | ||
1da177e4 LT |
859 | /* set up our interrupt urb */ |
860 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
861 | serial->dev, |
862 | usb_rcvintpipe(serial->dev, | |
863 | port0->interrupt_in_endpointAddress), | |
864 | port0->interrupt_in_buffer, | |
865 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
866 | edge_interrupt_callback, edge_serial, | |
867 | edge_serial->interrupt_read_urb->interval); | |
868 | ||
1da177e4 LT |
869 | /* set up our bulk in urb */ |
870 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
871 | usb_rcvbulkpipe(serial->dev, |
872 | port0->bulk_in_endpointAddress), | |
873 | port0->bulk_in_buffer, | |
874 | edge_serial->read_urb->transfer_buffer_length, | |
875 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 876 | edge_serial->read_in_progress = false; |
1da177e4 LT |
877 | |
878 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
879 | * this interrupt will continue as long |
880 | * as the edgeport is connected */ | |
881 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
882 | GFP_KERNEL); | |
1da177e4 | 883 | if (response) { |
984f6868 GKH |
884 | dev_err(dev, "%s - Error %d submitting control urb\n", |
885 | __func__, response); | |
1da177e4 LT |
886 | } |
887 | } | |
03f0dbf7 | 888 | |
1da177e4 LT |
889 | /* initialize our wait queues */ |
890 | init_waitqueue_head(&edge_port->wait_open); | |
891 | init_waitqueue_head(&edge_port->wait_chase); | |
892 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
893 | init_waitqueue_head(&edge_port->wait_command); | |
894 | ||
895 | /* initialize our icount structure */ | |
03f0dbf7 | 896 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1da177e4 LT |
897 | |
898 | /* initialize our port settings */ | |
03f0dbf7 AC |
899 | edge_port->txCredits = 0; /* Can't send any data yet */ |
900 | /* Must always set this bit to enable ints! */ | |
901 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 902 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
903 | |
904 | /* send a open port command */ | |
cb8eaa8b RK |
905 | edge_port->openPending = true; |
906 | edge_port->open = false; | |
03f0dbf7 | 907 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
908 | |
909 | if (response < 0) { | |
984f6868 | 910 | dev_err(dev, "%s - error sending open port command\n", __func__); |
cb8eaa8b | 911 | edge_port->openPending = false; |
1da177e4 LT |
912 | return -ENODEV; |
913 | } | |
914 | ||
915 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
916 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
917 | OPEN_TIMEOUT); | |
1da177e4 | 918 | |
cb8eaa8b | 919 | if (!edge_port->open) { |
1da177e4 | 920 | /* open timed out */ |
984f6868 | 921 | dev_dbg(dev, "%s - open timedout\n", __func__); |
cb8eaa8b | 922 | edge_port->openPending = false; |
1da177e4 LT |
923 | return -ENODEV; |
924 | } | |
925 | ||
926 | /* create the txfifo */ | |
927 | edge_port->txfifo.head = 0; | |
928 | edge_port->txfifo.tail = 0; | |
929 | edge_port->txfifo.count = 0; | |
930 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 931 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
932 | |
933 | if (!edge_port->txfifo.fifo) { | |
984f6868 | 934 | dev_dbg(dev, "%s - no memory\n", __func__); |
335f8514 | 935 | edge_close(port); |
1da177e4 LT |
936 | return -ENOMEM; |
937 | } | |
938 | ||
939 | /* Allocate a URB for the write */ | |
03f0dbf7 | 940 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 941 | edge_port->write_in_progress = false; |
1da177e4 LT |
942 | |
943 | if (!edge_port->write_urb) { | |
984f6868 | 944 | dev_dbg(dev, "%s - no memory\n", __func__); |
335f8514 | 945 | edge_close(port); |
1da177e4 LT |
946 | return -ENOMEM; |
947 | } | |
948 | ||
984f6868 GKH |
949 | dev_dbg(dev, "%s(%d) - Initialize TX fifo to %d bytes\n", |
950 | __func__, port->number, edge_port->maxTxCredits); | |
1da177e4 LT |
951 | |
952 | return 0; | |
953 | } | |
954 | ||
955 | ||
956 | /************************************************************************ | |
957 | * | |
958 | * block_until_chase_response | |
959 | * | |
960 | * This function will block the close until one of the following: | |
961 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 962 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
963 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
964 | * | |
965 | ************************************************************************/ | |
966 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
967 | { | |
984f6868 | 968 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
969 | DEFINE_WAIT(wait); |
970 | __u16 lastCredits; | |
971 | int timeout = 1*HZ; | |
972 | int loop = 10; | |
973 | ||
974 | while (1) { | |
03f0dbf7 | 975 | /* Save Last credits */ |
1da177e4 LT |
976 | lastCredits = edge_port->txCredits; |
977 | ||
03f0dbf7 | 978 | /* Did we get our Chase response */ |
cb8eaa8b | 979 | if (!edge_port->chaseResponsePending) { |
984f6868 | 980 | dev_dbg(dev, "%s - Got Chase Response\n", __func__); |
1da177e4 | 981 | |
03f0dbf7 AC |
982 | /* did we get all of our credit back? */ |
983 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
984f6868 | 984 | dev_dbg(dev, "%s - Got all credits\n", __func__); |
1da177e4 LT |
985 | return; |
986 | } | |
987 | } | |
988 | ||
03f0dbf7 AC |
989 | /* Block the thread for a while */ |
990 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
991 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
992 | schedule_timeout(timeout); |
993 | finish_wait(&edge_port->wait_chase, &wait); | |
994 | ||
995 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 996 | /* No activity.. count down. */ |
1da177e4 LT |
997 | loop--; |
998 | if (loop == 0) { | |
cb8eaa8b | 999 | edge_port->chaseResponsePending = false; |
984f6868 | 1000 | dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); |
1da177e4 LT |
1001 | return; |
1002 | } | |
1003 | } else { | |
03f0dbf7 | 1004 | /* Reset timeout value back to 10 seconds */ |
984f6868 | 1005 | dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, |
03f0dbf7 | 1006 | lastCredits, edge_port->txCredits); |
1da177e4 LT |
1007 | loop = 10; |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | ||
1013 | /************************************************************************ | |
1014 | * | |
1015 | * block_until_tx_empty | |
1016 | * | |
1017 | * This function will block the close until one of the following: | |
1018 | * 1. TX count are 0 | |
1019 | * 2. The edgeport has stopped | |
dc0d5c1e | 1020 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
1021 | * |
1022 | ************************************************************************/ | |
03f0dbf7 | 1023 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 | 1024 | { |
984f6868 | 1025 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1026 | DEFINE_WAIT(wait); |
1027 | struct TxFifo *fifo = &edge_port->txfifo; | |
1028 | __u32 lastCount; | |
1029 | int timeout = HZ/10; | |
1030 | int loop = 30; | |
1031 | ||
1032 | while (1) { | |
03f0dbf7 | 1033 | /* Save Last count */ |
1da177e4 LT |
1034 | lastCount = fifo->count; |
1035 | ||
03f0dbf7 | 1036 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1037 | if (lastCount == 0) { |
984f6868 | 1038 | dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); |
1da177e4 LT |
1039 | return; |
1040 | } | |
1041 | ||
03f0dbf7 AC |
1042 | /* Block the thread for a while */ |
1043 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1044 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1045 | schedule_timeout(timeout); |
1046 | finish_wait(&edge_port->wait_chase, &wait); | |
1047 | ||
984f6868 | 1048 | dev_dbg(dev, "%s wait\n", __func__); |
1da177e4 LT |
1049 | |
1050 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1051 | /* No activity.. count down. */ |
1da177e4 LT |
1052 | loop--; |
1053 | if (loop == 0) { | |
984f6868 | 1054 | dev_dbg(dev, "%s - TIMEOUT\n", __func__); |
1da177e4 LT |
1055 | return; |
1056 | } | |
1057 | } else { | |
03f0dbf7 | 1058 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1059 | loop = 30; |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | ||
1065 | /***************************************************************************** | |
1066 | * edge_close | |
1067 | * this function is called by the tty driver when a port is closed | |
1068 | *****************************************************************************/ | |
335f8514 | 1069 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1070 | { |
1071 | struct edgeport_serial *edge_serial; | |
1072 | struct edgeport_port *edge_port; | |
1073 | int status; | |
1074 | ||
1da177e4 LT |
1075 | edge_serial = usb_get_serial_data(port->serial); |
1076 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1077 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1078 | return; |
03f0dbf7 AC |
1079 | |
1080 | /* block until tx is empty */ | |
1da177e4 LT |
1081 | block_until_tx_empty(edge_port); |
1082 | ||
cb8eaa8b | 1083 | edge_port->closePending = true; |
1da177e4 | 1084 | |
6e8cf775 GKH |
1085 | if ((!edge_serial->is_epic) || |
1086 | ((edge_serial->is_epic) && | |
1087 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1088 | /* flush and chase */ | |
cb8eaa8b | 1089 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1090 | |
984f6868 | 1091 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 AC |
1092 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1093 | if (status == 0) | |
1094 | /* block until chase finished */ | |
6e8cf775 | 1095 | block_until_chase_response(edge_port); |
03f0dbf7 | 1096 | else |
cb8eaa8b | 1097 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1098 | } |
1099 | ||
6e8cf775 GKH |
1100 | if ((!edge_serial->is_epic) || |
1101 | ((edge_serial->is_epic) && | |
1102 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1103 | /* close the port */ | |
984f6868 | 1104 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); |
03f0dbf7 | 1105 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1106 | } |
1da177e4 | 1107 | |
03f0dbf7 | 1108 | /* port->close = true; */ |
cb8eaa8b RK |
1109 | edge_port->closePending = false; |
1110 | edge_port->open = false; | |
1111 | edge_port->openPending = false; | |
1da177e4 | 1112 | |
9a25f44f | 1113 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1114 | |
1115 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1116 | /* if this urb had a transfer buffer already |
1117 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1118 | kfree(edge_port->write_urb->transfer_buffer); |
1119 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1120 | edge_port->write_urb = NULL; |
1121 | } | |
1bc3c9e1 JJ |
1122 | kfree(edge_port->txfifo.fifo); |
1123 | edge_port->txfifo.fifo = NULL; | |
03f0dbf7 | 1124 | } |
1da177e4 LT |
1125 | |
1126 | /***************************************************************************** | |
1127 | * SerialWrite | |
03f0dbf7 AC |
1128 | * this function is called by the tty driver when data should be written |
1129 | * to the port. | |
1130 | * If successful, we return the number of bytes written, otherwise we | |
1131 | * return a negative error number. | |
1da177e4 | 1132 | *****************************************************************************/ |
95da310e AC |
1133 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1134 | const unsigned char *data, int count) | |
1da177e4 LT |
1135 | { |
1136 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1137 | struct TxFifo *fifo; | |
1138 | int copySize; | |
1139 | int bytesleft; | |
1140 | int firsthalf; | |
1141 | int secondhalf; | |
1142 | unsigned long flags; | |
1143 | ||
1da177e4 LT |
1144 | if (edge_port == NULL) |
1145 | return -ENODEV; | |
1146 | ||
03f0dbf7 | 1147 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1148 | fifo = &edge_port->txfifo; |
1149 | ||
1150 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1151 | ||
03f0dbf7 AC |
1152 | /* calculate number of bytes to put in fifo */ |
1153 | copySize = min((unsigned int)count, | |
1154 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1155 | |
984f6868 GKH |
1156 | dev_dbg(&port->dev, "%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes\n", |
1157 | __func__, port->number, count, | |
03f0dbf7 | 1158 | edge_port->txCredits - fifo->count, copySize); |
1da177e4 | 1159 | |
03f0dbf7 AC |
1160 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1161 | and when txCredits is empty */ | |
1da177e4 | 1162 | if (copySize == 0) { |
984f6868 | 1163 | dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); |
1da177e4 LT |
1164 | goto finish_write; |
1165 | } | |
1166 | ||
03f0dbf7 AC |
1167 | /* queue the data |
1168 | * since we can never overflow the buffer we do not have to check for a | |
1169 | * full condition | |
1170 | * | |
1171 | * the copy is done is two parts -- first fill to the end of the buffer | |
1172 | * then copy the reset from the start of the buffer | |
1173 | */ | |
1da177e4 | 1174 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 | 1175 | firsthalf = min(bytesleft, copySize); |
984f6868 GKH |
1176 | dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, |
1177 | firsthalf, bytesleft); | |
1da177e4 LT |
1178 | |
1179 | /* now copy our data */ | |
1180 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
03f0dbf7 AC |
1181 | usb_serial_debug_data(debug, &port->dev, __func__, |
1182 | firsthalf, &fifo->fifo[fifo->head]); | |
1da177e4 | 1183 | |
03f0dbf7 | 1184 | /* update the index and size */ |
1da177e4 LT |
1185 | fifo->head += firsthalf; |
1186 | fifo->count += firsthalf; | |
1187 | ||
03f0dbf7 AC |
1188 | /* wrap the index */ |
1189 | if (fifo->head == fifo->size) | |
1da177e4 | 1190 | fifo->head = 0; |
1da177e4 LT |
1191 | |
1192 | secondhalf = copySize-firsthalf; | |
1193 | ||
1194 | if (secondhalf) { | |
984f6868 | 1195 | dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); |
1da177e4 | 1196 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
03f0dbf7 AC |
1197 | usb_serial_debug_data(debug, &port->dev, __func__, |
1198 | secondhalf, &fifo->fifo[fifo->head]); | |
1199 | /* update the index and size */ | |
1da177e4 LT |
1200 | fifo->count += secondhalf; |
1201 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1202 | /* No need to check for wrap since we can not get to end of |
1203 | * the fifo in this part | |
1204 | */ | |
1da177e4 LT |
1205 | } |
1206 | ||
1207 | finish_write: | |
1208 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1209 | ||
03f0dbf7 AC |
1210 | send_more_port_data((struct edgeport_serial *) |
1211 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1212 | |
984f6868 GKH |
1213 | dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", |
1214 | __func__, copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1215 | |
03f0dbf7 | 1216 | return copySize; |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | ||
1220 | /************************************************************************ | |
1221 | * | |
1222 | * send_more_port_data() | |
1223 | * | |
1224 | * This routine attempts to write additional UART transmit data | |
1225 | * to a port over the USB bulk pipe. It is called (1) when new | |
1226 | * data has been written to a port's TxBuffer from higher layers | |
1227 | * (2) when the peripheral sends us additional TxCredits indicating | |
1228 | * that it can accept more Tx data for a given port; and (3) when | |
1229 | * a bulk write completes successfully and we want to see if we | |
1230 | * can transmit more. | |
1231 | * | |
1232 | ************************************************************************/ | |
03f0dbf7 AC |
1233 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1234 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1235 | { |
1236 | struct TxFifo *fifo = &edge_port->txfifo; | |
984f6868 | 1237 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1238 | struct urb *urb; |
1239 | unsigned char *buffer; | |
1240 | int status; | |
1241 | int count; | |
1242 | int bytesleft; | |
1243 | int firsthalf; | |
1244 | int secondhalf; | |
1245 | unsigned long flags; | |
1246 | ||
1da177e4 LT |
1247 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1248 | ||
1249 | if (edge_port->write_in_progress || | |
1250 | !edge_port->open || | |
1251 | (fifo->count == 0)) { | |
984f6868 GKH |
1252 | dev_dbg(dev, "%s(%d) EXIT - fifo %d, PendingWrite = %d\n", |
1253 | __func__, edge_port->port->number, | |
1254 | fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1255 | goto exit_send; |
1256 | } | |
1257 | ||
03f0dbf7 AC |
1258 | /* since the amount of data in the fifo will always fit into the |
1259 | * edgeport buffer we do not need to check the write length | |
1260 | * | |
1261 | * Do we have enough credits for this port to make it worthwhile | |
1262 | * to bother queueing a write. If it's too small, say a few bytes, | |
1263 | * it's better to wait for more credits so we can do a larger write. | |
1264 | */ | |
1265 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
984f6868 | 1266 | dev_dbg(dev, "%s(%d) Not enough credit - fifo %d TxCredit %d\n", |
03f0dbf7 AC |
1267 | __func__, edge_port->port->number, fifo->count, |
1268 | edge_port->txCredits); | |
1da177e4 LT |
1269 | goto exit_send; |
1270 | } | |
1271 | ||
03f0dbf7 | 1272 | /* lock this write */ |
cb8eaa8b | 1273 | edge_port->write_in_progress = true; |
1da177e4 | 1274 | |
03f0dbf7 | 1275 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1276 | urb = edge_port->write_urb; |
1277 | ||
1bc3c9e1 JJ |
1278 | /* make sure transfer buffer is freed */ |
1279 | kfree(urb->transfer_buffer); | |
1280 | urb->transfer_buffer = NULL; | |
1da177e4 | 1281 | |
03f0dbf7 AC |
1282 | /* build the data header for the buffer and port that we are about |
1283 | to send out */ | |
1da177e4 | 1284 | count = fifo->count; |
03f0dbf7 | 1285 | buffer = kmalloc(count+2, GFP_ATOMIC); |
1da177e4 | 1286 | if (buffer == NULL) { |
22a416c4 | 1287 | dev_err_console(edge_port->port, |
03f0dbf7 | 1288 | "%s - no more kernel memory...\n", __func__); |
cb8eaa8b | 1289 | edge_port->write_in_progress = false; |
1da177e4 LT |
1290 | goto exit_send; |
1291 | } | |
03f0dbf7 AC |
1292 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number |
1293 | - edge_port->port->serial->minor, count); | |
1294 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number | |
1295 | - edge_port->port->serial->minor, count); | |
1da177e4 LT |
1296 | |
1297 | /* now copy our data */ | |
1298 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1299 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1300 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1301 | fifo->tail += firsthalf; | |
1302 | fifo->count -= firsthalf; | |
03f0dbf7 | 1303 | if (fifo->tail == fifo->size) |
1da177e4 | 1304 | fifo->tail = 0; |
1da177e4 LT |
1305 | |
1306 | secondhalf = count-firsthalf; | |
1307 | if (secondhalf) { | |
03f0dbf7 AC |
1308 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1309 | secondhalf); | |
1da177e4 LT |
1310 | fifo->tail += secondhalf; |
1311 | fifo->count -= secondhalf; | |
1312 | } | |
1313 | ||
1314 | if (count) | |
03f0dbf7 AC |
1315 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1316 | __func__, count, &buffer[2]); | |
1da177e4 LT |
1317 | |
1318 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1319 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1320 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1321 | edge_serial->bulk_out_endpoint), | |
1322 | buffer, count+2, | |
1323 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1324 | |
1325 | /* decrement the number of credits we have by the number we just sent */ | |
1326 | edge_port->txCredits -= count; | |
1327 | edge_port->icount.tx += count; | |
1328 | ||
1da177e4 LT |
1329 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1330 | if (status) { | |
1331 | /* something went wrong */ | |
22a416c4 | 1332 | dev_err_console(edge_port->port, |
03f0dbf7 AC |
1333 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", |
1334 | __func__, status); | |
cb8eaa8b | 1335 | edge_port->write_in_progress = false; |
1da177e4 LT |
1336 | |
1337 | /* revert the credits as something bad happened. */ | |
1338 | edge_port->txCredits += count; | |
1339 | edge_port->icount.tx -= count; | |
1340 | } | |
984f6868 GKH |
1341 | dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", |
1342 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1343 | |
1344 | exit_send: | |
1345 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1346 | } | |
1347 | ||
1348 | ||
1349 | /***************************************************************************** | |
1350 | * edge_write_room | |
03f0dbf7 AC |
1351 | * this function is called by the tty driver when it wants to know how |
1352 | * many bytes of data we can accept for a specific port. If successful, | |
1353 | * we return the amount of room that we have for this port (the txCredits) | |
1354 | * otherwise we return a negative error number. | |
1da177e4 | 1355 | *****************************************************************************/ |
95da310e | 1356 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1357 | { |
95da310e | 1358 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1359 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1360 | int room; | |
1361 | unsigned long flags; | |
1362 | ||
1da177e4 | 1363 | if (edge_port == NULL) |
d76f2f44 | 1364 | return 0; |
cb8eaa8b | 1365 | if (edge_port->closePending) |
d76f2f44 | 1366 | return 0; |
1da177e4 | 1367 | |
1da177e4 | 1368 | if (!edge_port->open) { |
984f6868 | 1369 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1370 | return 0; |
1da177e4 LT |
1371 | } |
1372 | ||
03f0dbf7 | 1373 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1374 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1375 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1376 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1377 | ||
984f6868 | 1378 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
1da177e4 LT |
1379 | return room; |
1380 | } | |
1381 | ||
1382 | ||
1383 | /***************************************************************************** | |
1384 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1385 | * this function is called by the tty driver when it wants to know how |
1386 | * many bytes of data we currently have outstanding in the port (data that | |
1387 | * has been written, but hasn't made it out the port yet) | |
1388 | * If successful, we return the number of bytes left to be written in the | |
1389 | * system, | |
1da177e4 LT |
1390 | * Otherwise we return a negative error number. |
1391 | *****************************************************************************/ | |
95da310e | 1392 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1393 | { |
95da310e | 1394 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1395 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1396 | int num_chars; | |
1397 | unsigned long flags; | |
1398 | ||
1da177e4 | 1399 | if (edge_port == NULL) |
d76f2f44 | 1400 | return 0; |
cb8eaa8b | 1401 | if (edge_port->closePending) |
d76f2f44 | 1402 | return 0; |
1da177e4 LT |
1403 | |
1404 | if (!edge_port->open) { | |
984f6868 | 1405 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1406 | return 0; |
1da177e4 LT |
1407 | } |
1408 | ||
1409 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1410 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1411 | edge_port->txfifo.count; | |
1da177e4 LT |
1412 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1413 | if (num_chars) { | |
984f6868 GKH |
1414 | dev_dbg(&port->dev, "%s(port %d) - returns %d\n", __func__, |
1415 | port->number, num_chars); | |
1da177e4 LT |
1416 | } |
1417 | ||
1418 | return num_chars; | |
1419 | } | |
1420 | ||
1421 | ||
1422 | /***************************************************************************** | |
1423 | * SerialThrottle | |
1424 | * this function is called by the tty driver when it wants to stop the data | |
1425 | * being read from the port. | |
1426 | *****************************************************************************/ | |
95da310e | 1427 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1428 | { |
95da310e | 1429 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1430 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1431 | int status; |
1432 | ||
1da177e4 LT |
1433 | if (edge_port == NULL) |
1434 | return; | |
1435 | ||
1436 | if (!edge_port->open) { | |
984f6868 | 1437 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1438 | return; |
1439 | } | |
1440 | ||
1da177e4 LT |
1441 | /* if we are implementing XON/XOFF, send the stop character */ |
1442 | if (I_IXOFF(tty)) { | |
1443 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1444 | status = edge_write(tty, port, &stop_char, 1); |
1445 | if (status <= 0) | |
1da177e4 | 1446 | return; |
1da177e4 LT |
1447 | } |
1448 | ||
1449 | /* if we are implementing RTS/CTS, toggle that line */ | |
1450 | if (tty->termios->c_cflag & CRTSCTS) { | |
1451 | edge_port->shadowMCR &= ~MCR_RTS; | |
03f0dbf7 AC |
1452 | status = send_cmd_write_uart_register(edge_port, MCR, |
1453 | edge_port->shadowMCR); | |
1454 | if (status != 0) | |
1da177e4 | 1455 | return; |
1da177e4 | 1456 | } |
1da177e4 LT |
1457 | } |
1458 | ||
1459 | ||
1460 | /***************************************************************************** | |
1461 | * edge_unthrottle | |
03f0dbf7 AC |
1462 | * this function is called by the tty driver when it wants to resume the |
1463 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1464 | *****************************************************************************/ |
95da310e | 1465 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1466 | { |
95da310e | 1467 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1468 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1469 | int status; |
1470 | ||
1da177e4 LT |
1471 | if (edge_port == NULL) |
1472 | return; | |
1473 | ||
1474 | if (!edge_port->open) { | |
984f6868 | 1475 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1476 | return; |
1477 | } | |
1478 | ||
1da177e4 LT |
1479 | /* if we are implementing XON/XOFF, send the start character */ |
1480 | if (I_IXOFF(tty)) { | |
1481 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1482 | status = edge_write(tty, port, &start_char, 1); |
1483 | if (status <= 0) | |
1da177e4 | 1484 | return; |
1da177e4 | 1485 | } |
1da177e4 LT |
1486 | /* if we are implementing RTS/CTS, toggle that line */ |
1487 | if (tty->termios->c_cflag & CRTSCTS) { | |
1488 | edge_port->shadowMCR |= MCR_RTS; | |
03f0dbf7 AC |
1489 | send_cmd_write_uart_register(edge_port, MCR, |
1490 | edge_port->shadowMCR); | |
1da177e4 | 1491 | } |
1da177e4 LT |
1492 | } |
1493 | ||
1494 | ||
1495 | /***************************************************************************** | |
1496 | * SerialSetTermios | |
03f0dbf7 AC |
1497 | * this function is called by the tty driver when it wants to change |
1498 | * the termios structure | |
1da177e4 | 1499 | *****************************************************************************/ |
95da310e AC |
1500 | static void edge_set_termios(struct tty_struct *tty, |
1501 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1502 | { |
1503 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1504 | unsigned int cflag; |
1505 | ||
1da177e4 | 1506 | cflag = tty->termios->c_cflag; |
984f6868 GKH |
1507 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios->c_cflag, tty->termios->c_iflag); |
1508 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag); | |
1da177e4 LT |
1509 | |
1510 | if (edge_port == NULL) | |
1511 | return; | |
1512 | ||
1513 | if (!edge_port->open) { | |
984f6868 | 1514 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1515 | return; |
1516 | } | |
1517 | ||
1518 | /* change the port settings to the new ones specified */ | |
95da310e | 1519 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1520 | } |
1521 | ||
1522 | ||
1523 | /***************************************************************************** | |
1524 | * get_lsr_info - get line status register info | |
1525 | * | |
1526 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1527 | * is emptied. On bus types like RS485, the transmitter must | |
1528 | * release the bus after transmitting. This must be done when | |
1529 | * the transmit shift register is empty, not be done when the | |
1530 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1531 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1532 | *****************************************************************************/ |
03f0dbf7 AC |
1533 | static int get_lsr_info(struct edgeport_port *edge_port, |
1534 | unsigned int __user *value) | |
1da177e4 LT |
1535 | { |
1536 | unsigned int result = 0; | |
1537 | unsigned long flags; | |
1538 | ||
1539 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1540 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1541 | edge_port->txfifo.count == 0) { | |
984f6868 | 1542 | dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); |
1da177e4 LT |
1543 | result = TIOCSER_TEMT; |
1544 | } | |
1545 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1546 | ||
1547 | if (copy_to_user(value, &result, sizeof(int))) | |
1548 | return -EFAULT; | |
1549 | return 0; | |
1550 | } | |
1551 | ||
20b9d177 | 1552 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 1553 | unsigned int set, unsigned int clear) |
1da177e4 | 1554 | { |
95da310e | 1555 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1556 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1557 | unsigned int mcr; | |
1558 | ||
1da177e4 LT |
1559 | mcr = edge_port->shadowMCR; |
1560 | if (set & TIOCM_RTS) | |
1561 | mcr |= MCR_RTS; | |
1562 | if (set & TIOCM_DTR) | |
1563 | mcr |= MCR_DTR; | |
1564 | if (set & TIOCM_LOOP) | |
1565 | mcr |= MCR_LOOPBACK; | |
1566 | ||
1567 | if (clear & TIOCM_RTS) | |
1568 | mcr &= ~MCR_RTS; | |
1569 | if (clear & TIOCM_DTR) | |
1570 | mcr &= ~MCR_DTR; | |
1571 | if (clear & TIOCM_LOOP) | |
1572 | mcr &= ~MCR_LOOPBACK; | |
1573 | ||
1574 | edge_port->shadowMCR = mcr; | |
1575 | ||
1576 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
60b33c13 | 1581 | static int edge_tiocmget(struct tty_struct *tty) |
1da177e4 | 1582 | { |
95da310e | 1583 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1584 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1585 | unsigned int result = 0; | |
1586 | unsigned int msr; | |
1587 | unsigned int mcr; | |
1588 | ||
1da177e4 LT |
1589 | msr = edge_port->shadowMSR; |
1590 | mcr = edge_port->shadowMCR; | |
1591 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1592 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1593 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1594 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1595 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1596 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1597 | ||
1da177e4 LT |
1598 | return result; |
1599 | } | |
1600 | ||
0bca1b91 AC |
1601 | static int edge_get_icount(struct tty_struct *tty, |
1602 | struct serial_icounter_struct *icount) | |
1603 | { | |
1604 | struct usb_serial_port *port = tty->driver_data; | |
1605 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1606 | struct async_icount cnow; | |
1607 | cnow = edge_port->icount; | |
1608 | ||
1609 | icount->cts = cnow.cts; | |
1610 | icount->dsr = cnow.dsr; | |
1611 | icount->rng = cnow.rng; | |
1612 | icount->dcd = cnow.dcd; | |
1613 | icount->rx = cnow.rx; | |
1614 | icount->tx = cnow.tx; | |
1615 | icount->frame = cnow.frame; | |
1616 | icount->overrun = cnow.overrun; | |
1617 | icount->parity = cnow.parity; | |
1618 | icount->brk = cnow.brk; | |
1619 | icount->buf_overrun = cnow.buf_overrun; | |
1620 | ||
984f6868 GKH |
1621 | dev_dbg(&port->dev, "%s (%d) TIOCGICOUNT RX=%d, TX=%d\n", __func__, |
1622 | port->number, icount->rx, icount->tx); | |
0bca1b91 AC |
1623 | return 0; |
1624 | } | |
1625 | ||
03f0dbf7 AC |
1626 | static int get_serial_info(struct edgeport_port *edge_port, |
1627 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1628 | { |
1629 | struct serial_struct tmp; | |
1630 | ||
1631 | if (!retinfo) | |
1632 | return -EFAULT; | |
1633 | ||
1634 | memset(&tmp, 0, sizeof(tmp)); | |
1635 | ||
1636 | tmp.type = PORT_16550A; | |
1637 | tmp.line = edge_port->port->serial->minor; | |
1638 | tmp.port = edge_port->port->number; | |
1639 | tmp.irq = 0; | |
1640 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1641 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1642 | tmp.baud_base = 9600; | |
1643 | tmp.close_delay = 5*HZ; | |
1644 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1645 | |
1646 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1647 | return -EFAULT; | |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | ||
1da177e4 LT |
1652 | /***************************************************************************** |
1653 | * SerialIoctl | |
1654 | * this function handles any ioctl calls to the driver | |
1655 | *****************************************************************************/ | |
00a0d0d6 | 1656 | static int edge_ioctl(struct tty_struct *tty, |
95da310e | 1657 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1658 | { |
95da310e | 1659 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1660 | DEFINE_WAIT(wait); |
1661 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1662 | struct async_icount cnow; | |
1663 | struct async_icount cprev; | |
1da177e4 | 1664 | |
984f6868 | 1665 | dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); |
1da177e4 LT |
1666 | |
1667 | switch (cmd) { | |
03f0dbf7 | 1668 | case TIOCSERGETLSR: |
984f6868 | 1669 | dev_dbg(&port->dev, "%s (%d) TIOCSERGETLSR\n", __func__, port->number); |
03f0dbf7 AC |
1670 | return get_lsr_info(edge_port, (unsigned int __user *) arg); |
1671 | ||
1672 | case TIOCGSERIAL: | |
984f6868 | 1673 | dev_dbg(&port->dev, "%s (%d) TIOCGSERIAL\n", __func__, port->number); |
03f0dbf7 AC |
1674 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); |
1675 | ||
1676 | case TIOCMIWAIT: | |
984f6868 | 1677 | dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number); |
03f0dbf7 AC |
1678 | cprev = edge_port->icount; |
1679 | while (1) { | |
1680 | prepare_to_wait(&edge_port->delta_msr_wait, | |
1681 | &wait, TASK_INTERRUPTIBLE); | |
1682 | schedule(); | |
1683 | finish_wait(&edge_port->delta_msr_wait, &wait); | |
1684 | /* see if a signal did it */ | |
1685 | if (signal_pending(current)) | |
1686 | return -ERESTARTSYS; | |
1687 | cnow = edge_port->icount; | |
1688 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1689 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1690 | return -EIO; /* no change => error */ | |
1691 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1692 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1693 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1694 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
1695 | return 0; | |
1da177e4 | 1696 | } |
03f0dbf7 AC |
1697 | cprev = cnow; |
1698 | } | |
1699 | /* NOTREACHED */ | |
1700 | break; | |
1da177e4 | 1701 | |
1da177e4 | 1702 | } |
1da177e4 LT |
1703 | return -ENOIOCTLCMD; |
1704 | } | |
1705 | ||
1706 | ||
1707 | /***************************************************************************** | |
1708 | * SerialBreak | |
1709 | * this function sends a break to the port | |
1710 | *****************************************************************************/ | |
03f0dbf7 | 1711 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1712 | { |
95da310e | 1713 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1714 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1715 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1716 | int status; |
1717 | ||
6e8cf775 GKH |
1718 | if ((!edge_serial->is_epic) || |
1719 | ((edge_serial->is_epic) && | |
1720 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1721 | /* flush and chase */ | |
cb8eaa8b | 1722 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1723 | |
984f6868 | 1724 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 | 1725 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1726 | if (status == 0) { |
03f0dbf7 | 1727 | /* block until chase finished */ |
6e8cf775 GKH |
1728 | block_until_chase_response(edge_port); |
1729 | } else { | |
cb8eaa8b | 1730 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1731 | } |
1da177e4 LT |
1732 | } |
1733 | ||
6e8cf775 GKH |
1734 | if ((!edge_serial->is_epic) || |
1735 | ((edge_serial->is_epic) && | |
1736 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1737 | if (break_state == -1) { | |
984f6868 | 1738 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); |
03f0dbf7 AC |
1739 | status = send_iosp_ext_cmd(edge_port, |
1740 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1741 | } else { |
984f6868 | 1742 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); |
03f0dbf7 AC |
1743 | status = send_iosp_ext_cmd(edge_port, |
1744 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1745 | } |
03f0dbf7 | 1746 | if (status) |
984f6868 | 1747 | dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", |
03f0dbf7 | 1748 | __func__); |
1da177e4 | 1749 | } |
1da177e4 LT |
1750 | } |
1751 | ||
1752 | ||
1753 | /***************************************************************************** | |
1754 | * process_rcvd_data | |
1755 | * this function handles the data received on the bulk in pipe. | |
1756 | *****************************************************************************/ | |
03f0dbf7 AC |
1757 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1758 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 | 1759 | { |
984f6868 | 1760 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
1761 | struct usb_serial_port *port; |
1762 | struct edgeport_port *edge_port; | |
1763 | struct tty_struct *tty; | |
1764 | __u16 lastBufferLength; | |
1765 | __u16 rxLen; | |
1766 | ||
1da177e4 LT |
1767 | lastBufferLength = bufferLength + 1; |
1768 | ||
1769 | while (bufferLength > 0) { | |
1770 | /* failsafe incase we get a message that we don't understand */ | |
1771 | if (lastBufferLength == bufferLength) { | |
984f6868 | 1772 | dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); |
1da177e4 LT |
1773 | break; |
1774 | } | |
1775 | lastBufferLength = bufferLength; | |
1776 | ||
1777 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1778 | case EXPECT_HDR1: |
1779 | edge_serial->rxHeader1 = *buffer; | |
1780 | ++buffer; | |
1781 | --bufferLength; | |
1da177e4 | 1782 | |
03f0dbf7 AC |
1783 | if (bufferLength == 0) { |
1784 | edge_serial->rxState = EXPECT_HDR2; | |
1785 | break; | |
1786 | } | |
1787 | /* otherwise, drop on through */ | |
1788 | case EXPECT_HDR2: | |
1789 | edge_serial->rxHeader2 = *buffer; | |
1790 | ++buffer; | |
1791 | --bufferLength; | |
1792 | ||
984f6868 GKH |
1793 | dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, |
1794 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
03f0dbf7 AC |
1795 | /* Process depending on whether this header is |
1796 | * data or status */ | |
1797 | ||
1798 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1799 | /* Decode this status header and go to | |
1800 | * EXPECT_HDR1 (if we can process the status | |
1801 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1802 | * get the third byte. */ | |
1803 | edge_serial->rxPort = | |
1804 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1805 | edge_serial->rxStatusCode = | |
1806 | IOSP_GET_STATUS_CODE( | |
1807 | edge_serial->rxHeader1); | |
1808 | ||
1809 | if (!IOSP_STATUS_IS_2BYTE( | |
1810 | edge_serial->rxStatusCode)) { | |
1811 | /* This status needs additional bytes. | |
1812 | * Save what we have and then wait for | |
1813 | * more data. | |
1814 | */ | |
1815 | edge_serial->rxStatusParam | |
1816 | = edge_serial->rxHeader2; | |
1817 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1818 | break; |
1819 | } | |
03f0dbf7 AC |
1820 | /* We have all the header bytes, process the |
1821 | status now */ | |
1822 | process_rcvd_status(edge_serial, | |
1823 | edge_serial->rxHeader2, 0); | |
1824 | edge_serial->rxState = EXPECT_HDR1; | |
1825 | break; | |
1826 | } else { | |
1827 | edge_serial->rxPort = | |
1828 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1829 | edge_serial->rxBytesRemaining = | |
1830 | IOSP_GET_HDR_DATA_LEN( | |
1831 | edge_serial->rxHeader1, | |
1832 | edge_serial->rxHeader2); | |
984f6868 GKH |
1833 | dev_dbg(dev, "%s - Data for Port %u Len %u\n", |
1834 | __func__, | |
1835 | edge_serial->rxPort, | |
1836 | edge_serial->rxBytesRemaining); | |
03f0dbf7 AC |
1837 | |
1838 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1839 | * ASSERT(DevExt->RxBytesRemaining < | |
1840 | * IOSP_MAX_DATA_LENGTH); | |
1841 | */ | |
1da177e4 | 1842 | |
03f0dbf7 AC |
1843 | if (bufferLength == 0) { |
1844 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1845 | break; |
1da177e4 | 1846 | } |
03f0dbf7 AC |
1847 | /* Else, drop through */ |
1848 | } | |
1849 | case EXPECT_DATA: /* Expect data */ | |
1850 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1851 | rxLen = bufferLength; | |
1852 | /* Expect data to start next buffer */ | |
1853 | edge_serial->rxState = EXPECT_DATA; | |
1854 | } else { | |
1855 | /* BufLen >= RxBytesRemaining */ | |
1856 | rxLen = edge_serial->rxBytesRemaining; | |
1857 | /* Start another header next time */ | |
1858 | edge_serial->rxState = EXPECT_HDR1; | |
1859 | } | |
1da177e4 | 1860 | |
03f0dbf7 AC |
1861 | bufferLength -= rxLen; |
1862 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1863 | |
03f0dbf7 AC |
1864 | /* spit this data back into the tty driver if this |
1865 | port is open */ | |
1866 | if (rxLen) { | |
1867 | port = edge_serial->serial->port[ | |
1868 | edge_serial->rxPort]; | |
1869 | edge_port = usb_get_serial_port_data(port); | |
1870 | if (edge_port->open) { | |
4a90f09b AC |
1871 | tty = tty_port_tty_get( |
1872 | &edge_port->port->port); | |
03f0dbf7 | 1873 | if (tty) { |
984f6868 | 1874 | dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", |
03f0dbf7 AC |
1875 | __func__, rxLen, edge_serial->rxPort); |
1876 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); | |
4a90f09b | 1877 | tty_kref_put(tty); |
1da177e4 | 1878 | } |
03f0dbf7 | 1879 | edge_port->icount.rx += rxLen; |
1da177e4 | 1880 | } |
03f0dbf7 AC |
1881 | buffer += rxLen; |
1882 | } | |
1883 | break; | |
1da177e4 | 1884 | |
03f0dbf7 AC |
1885 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1886 | edge_serial->rxHeader3 = *buffer; | |
1887 | ++buffer; | |
1888 | --bufferLength; | |
1889 | ||
1890 | /* We have all the header bytes, process the | |
1891 | status now */ | |
1892 | process_rcvd_status(edge_serial, | |
1893 | edge_serial->rxStatusParam, | |
1894 | edge_serial->rxHeader3); | |
1895 | edge_serial->rxState = EXPECT_HDR1; | |
1896 | break; | |
1da177e4 LT |
1897 | } |
1898 | } | |
1899 | } | |
1900 | ||
1901 | ||
1902 | /***************************************************************************** | |
1903 | * process_rcvd_status | |
03f0dbf7 AC |
1904 | * this function handles the any status messages received on the |
1905 | * bulk in pipe. | |
1da177e4 | 1906 | *****************************************************************************/ |
03f0dbf7 AC |
1907 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1908 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1909 | { |
1910 | struct usb_serial_port *port; | |
1911 | struct edgeport_port *edge_port; | |
4a90f09b | 1912 | struct tty_struct *tty; |
984f6868 | 1913 | struct device *dev; |
1da177e4 LT |
1914 | __u8 code = edge_serial->rxStatusCode; |
1915 | ||
1916 | /* switch the port pointer to the one being currently talked about */ | |
1917 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1918 | edge_port = usb_get_serial_port_data(port); | |
1919 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1920 | dev_err(&edge_serial->serial->dev->dev, |
1921 | "%s - edge_port == NULL for port %d\n", | |
1922 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1923 | return; |
1924 | } | |
984f6868 | 1925 | dev = &port->dev; |
1da177e4 LT |
1926 | |
1927 | if (code == IOSP_EXT_STATUS) { | |
1928 | switch (byte2) { | |
03f0dbf7 AC |
1929 | case IOSP_EXT_STATUS_CHASE_RSP: |
1930 | /* we want to do EXT status regardless of port | |
1931 | * open/closed */ | |
984f6868 GKH |
1932 | dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", |
1933 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1934 | /* Currently, the only EXT_STATUS is Chase, so process |
1935 | * here instead of one more call to one more subroutine | |
1936 | * If/when more EXT_STATUS, there'll be more work to do | |
1937 | * Also, we currently clear flag and close the port | |
1938 | * regardless of content of above's Byte3. | |
1939 | * We could choose to do something else when Byte3 says | |
1940 | * Timeout on Chase from Edgeport, like wait longer in | |
1941 | * block_until_chase_response, but for now we don't. | |
1942 | */ | |
1943 | edge_port->chaseResponsePending = false; | |
1944 | wake_up(&edge_port->wait_chase); | |
1945 | return; | |
1da177e4 | 1946 | |
03f0dbf7 | 1947 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
984f6868 GKH |
1948 | dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", |
1949 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1950 | /* Port->RxCheckRsp = true; */ |
1951 | return; | |
1da177e4 LT |
1952 | } |
1953 | } | |
1954 | ||
1955 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1956 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1957 | edge_port->maxTxCredits = edge_port->txCredits; | |
984f6868 GKH |
1958 | dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", |
1959 | __func__, edge_serial->rxPort, byte2, edge_port->txCredits); | |
03f0dbf7 | 1960 | handle_new_msr(edge_port, byte2); |
1da177e4 | 1961 | |
03f0dbf7 AC |
1962 | /* send the current line settings to the port so we are |
1963 | in sync with any further termios calls */ | |
4a90f09b AC |
1964 | tty = tty_port_tty_get(&edge_port->port->port); |
1965 | if (tty) { | |
1966 | change_port_settings(tty, | |
1967 | edge_port, tty->termios); | |
1968 | tty_kref_put(tty); | |
1969 | } | |
1da177e4 LT |
1970 | |
1971 | /* we have completed the open */ | |
cb8eaa8b RK |
1972 | edge_port->openPending = false; |
1973 | edge_port->open = true; | |
1da177e4 LT |
1974 | wake_up(&edge_port->wait_open); |
1975 | return; | |
1976 | } | |
1977 | ||
03f0dbf7 AC |
1978 | /* If port is closed, silently discard all rcvd status. We can |
1979 | * have cases where buffered status is received AFTER the close | |
1980 | * port command is sent to the Edgeport. | |
1981 | */ | |
1982 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 1983 | return; |
1da177e4 LT |
1984 | |
1985 | switch (code) { | |
03f0dbf7 AC |
1986 | /* Not currently sent by Edgeport */ |
1987 | case IOSP_STATUS_LSR: | |
984f6868 GKH |
1988 | dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", |
1989 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1990 | handle_new_lsr(edge_port, false, byte2, 0); |
1991 | break; | |
1da177e4 | 1992 | |
03f0dbf7 | 1993 | case IOSP_STATUS_LSR_DATA: |
984f6868 GKH |
1994 | dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", |
1995 | __func__, edge_serial->rxPort, byte2, byte3); | |
03f0dbf7 AC |
1996 | /* byte2 is LSR Register */ |
1997 | /* byte3 is broken data byte */ | |
1998 | handle_new_lsr(edge_port, true, byte2, byte3); | |
1999 | break; | |
2000 | /* | |
2001 | * case IOSP_EXT_4_STATUS: | |
984f6868 | 2002 | * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", |
03f0dbf7 AC |
2003 | * __func__, edge_serial->rxPort, byte2, byte3); |
2004 | * break; | |
2005 | */ | |
2006 | case IOSP_STATUS_MSR: | |
984f6868 GKH |
2007 | dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", |
2008 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
2009 | /* |
2010 | * Process this new modem status and generate appropriate | |
2011 | * events, etc, based on the new status. This routine | |
2012 | * also saves the MSR in Port->ShadowMsr. | |
2013 | */ | |
2014 | handle_new_msr(edge_port, byte2); | |
2015 | break; | |
1da177e4 | 2016 | |
03f0dbf7 | 2017 | default: |
984f6868 | 2018 | dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); |
03f0dbf7 | 2019 | break; |
1da177e4 | 2020 | } |
1da177e4 LT |
2021 | } |
2022 | ||
2023 | ||
2024 | /***************************************************************************** | |
2025 | * edge_tty_recv | |
2026 | * this function passes data on to the tty flip buffer | |
2027 | *****************************************************************************/ | |
03f0dbf7 AC |
2028 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
2029 | unsigned char *data, int length) | |
1da177e4 LT |
2030 | { |
2031 | int cnt; | |
2032 | ||
a108bfcb AC |
2033 | cnt = tty_insert_flip_string(tty, data, length); |
2034 | if (cnt < length) { | |
2035 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
2036 | __func__, length - cnt); | |
2037 | } | |
2038 | data += cnt; | |
2039 | length -= cnt; | |
1da177e4 LT |
2040 | |
2041 | tty_flip_buffer_push(tty); | |
2042 | } | |
2043 | ||
2044 | ||
2045 | /***************************************************************************** | |
2046 | * handle_new_msr | |
2047 | * this function handles any change to the msr register for a port. | |
2048 | *****************************************************************************/ | |
2049 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2050 | { | |
2051 | struct async_icount *icount; | |
2052 | ||
03f0dbf7 AC |
2053 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
2054 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
2055 | icount = &edge_port->icount; |
2056 | ||
2057 | /* update input line counters */ | |
03f0dbf7 | 2058 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 2059 | icount->cts++; |
03f0dbf7 | 2060 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 2061 | icount->dsr++; |
03f0dbf7 | 2062 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 2063 | icount->dcd++; |
03f0dbf7 | 2064 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 2065 | icount->rng++; |
1da177e4 LT |
2066 | wake_up_interruptible(&edge_port->delta_msr_wait); |
2067 | } | |
2068 | ||
2069 | /* Save the new modem status */ | |
2070 | edge_port->shadowMSR = newMsr & 0xf0; | |
1da177e4 LT |
2071 | } |
2072 | ||
2073 | ||
2074 | /***************************************************************************** | |
2075 | * handle_new_lsr | |
2076 | * this function handles any change to the lsr register for a port. | |
2077 | *****************************************************************************/ | |
03f0dbf7 AC |
2078 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
2079 | __u8 lsr, __u8 data) | |
1da177e4 | 2080 | { |
03f0dbf7 AC |
2081 | __u8 newLsr = (__u8) (lsr & (__u8) |
2082 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2083 | struct async_icount *icount; | |
1da177e4 | 2084 | |
1da177e4 LT |
2085 | edge_port->shadowLSR = lsr; |
2086 | ||
2087 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
2088 | /* |
2089 | * Parity and Framing errors only count if they | |
2090 | * occur exclusive of a break being | |
2091 | * received. | |
2092 | */ | |
1da177e4 LT |
2093 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
2094 | } | |
2095 | ||
2096 | /* Place LSR data byte into Rx buffer */ | |
4a90f09b AC |
2097 | if (lsrData) { |
2098 | struct tty_struct *tty = | |
2099 | tty_port_tty_get(&edge_port->port->port); | |
2100 | if (tty) { | |
2101 | edge_tty_recv(&edge_port->port->dev, tty, &data, 1); | |
2102 | tty_kref_put(tty); | |
2103 | } | |
2104 | } | |
1da177e4 LT |
2105 | /* update input line counters */ |
2106 | icount = &edge_port->icount; | |
03f0dbf7 | 2107 | if (newLsr & LSR_BREAK) |
1da177e4 | 2108 | icount->brk++; |
03f0dbf7 | 2109 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 2110 | icount->overrun++; |
03f0dbf7 | 2111 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 2112 | icount->parity++; |
03f0dbf7 | 2113 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 2114 | icount->frame++; |
1da177e4 LT |
2115 | } |
2116 | ||
2117 | ||
2118 | /**************************************************************************** | |
2119 | * sram_write | |
03f0dbf7 | 2120 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2121 | * given address. |
2122 | * If successful returns the number of bytes written, otherwise it returns | |
2123 | * a negative error number of the problem. | |
2124 | ****************************************************************************/ | |
03f0dbf7 AC |
2125 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2126 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2127 | { |
2128 | int result; | |
2129 | __u16 current_length; | |
2130 | unsigned char *transfer_buffer; | |
2131 | ||
984f6868 | 2132 | dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); |
1da177e4 | 2133 | |
03f0dbf7 | 2134 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2135 | if (!transfer_buffer) { |
03f0dbf7 AC |
2136 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2137 | __func__, 64); | |
1da177e4 LT |
2138 | return -ENOMEM; |
2139 | } | |
2140 | ||
2141 | /* need to split these writes up into 64 byte chunks */ | |
2142 | result = 0; | |
2143 | while (length > 0) { | |
03f0dbf7 | 2144 | if (length > 64) |
1da177e4 | 2145 | current_length = 64; |
03f0dbf7 | 2146 | else |
1da177e4 | 2147 | current_length = length; |
03f0dbf7 | 2148 | |
984f6868 | 2149 | /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ |
03f0dbf7 AC |
2150 | memcpy(transfer_buffer, data, current_length); |
2151 | result = usb_control_msg(serial->dev, | |
2152 | usb_sndctrlpipe(serial->dev, 0), | |
2153 | USB_REQUEST_ION_WRITE_RAM, | |
2154 | 0x40, addr, extAddr, transfer_buffer, | |
2155 | current_length, 300); | |
1da177e4 LT |
2156 | if (result < 0) |
2157 | break; | |
2158 | length -= current_length; | |
2159 | addr += current_length; | |
2160 | data += current_length; | |
03f0dbf7 | 2161 | } |
1da177e4 | 2162 | |
03f0dbf7 | 2163 | kfree(transfer_buffer); |
1da177e4 LT |
2164 | return result; |
2165 | } | |
2166 | ||
2167 | ||
2168 | /**************************************************************************** | |
2169 | * rom_write | |
2170 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2171 | * given address. | |
2172 | * If successful returns the number of bytes written, otherwise it returns | |
2173 | * a negative error number of the problem. | |
2174 | ****************************************************************************/ | |
03f0dbf7 AC |
2175 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2176 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2177 | { |
2178 | int result; | |
2179 | __u16 current_length; | |
2180 | unsigned char *transfer_buffer; | |
2181 | ||
03f0dbf7 | 2182 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2183 | if (!transfer_buffer) { |
03f0dbf7 AC |
2184 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2185 | __func__, 64); | |
1da177e4 LT |
2186 | return -ENOMEM; |
2187 | } | |
2188 | ||
2189 | /* need to split these writes up into 64 byte chunks */ | |
2190 | result = 0; | |
2191 | while (length > 0) { | |
03f0dbf7 | 2192 | if (length > 64) |
1da177e4 | 2193 | current_length = 64; |
03f0dbf7 | 2194 | else |
1da177e4 | 2195 | current_length = length; |
03f0dbf7 AC |
2196 | memcpy(transfer_buffer, data, current_length); |
2197 | result = usb_control_msg(serial->dev, | |
2198 | usb_sndctrlpipe(serial->dev, 0), | |
2199 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2200 | addr, extAddr, | |
2201 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2202 | if (result < 0) |
2203 | break; | |
2204 | length -= current_length; | |
2205 | addr += current_length; | |
2206 | data += current_length; | |
03f0dbf7 | 2207 | } |
1da177e4 | 2208 | |
03f0dbf7 | 2209 | kfree(transfer_buffer); |
1da177e4 LT |
2210 | return result; |
2211 | } | |
2212 | ||
2213 | ||
2214 | /**************************************************************************** | |
2215 | * rom_read | |
2216 | * reads a number of bytes from the Edgeport device starting at the given | |
2217 | * address. | |
2218 | * If successful returns the number of bytes read, otherwise it returns | |
2219 | * a negative error number of the problem. | |
2220 | ****************************************************************************/ | |
03f0dbf7 AC |
2221 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2222 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2223 | { |
2224 | int result; | |
2225 | __u16 current_length; | |
2226 | unsigned char *transfer_buffer; | |
2227 | ||
03f0dbf7 | 2228 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2229 | if (!transfer_buffer) { |
03f0dbf7 AC |
2230 | dev_err(&serial->dev->dev, |
2231 | "%s - kmalloc(%d) failed.\n", __func__, 64); | |
1da177e4 LT |
2232 | return -ENOMEM; |
2233 | } | |
2234 | ||
2235 | /* need to split these reads up into 64 byte chunks */ | |
2236 | result = 0; | |
2237 | while (length > 0) { | |
03f0dbf7 | 2238 | if (length > 64) |
1da177e4 | 2239 | current_length = 64; |
03f0dbf7 | 2240 | else |
1da177e4 | 2241 | current_length = length; |
03f0dbf7 AC |
2242 | result = usb_control_msg(serial->dev, |
2243 | usb_rcvctrlpipe(serial->dev, 0), | |
2244 | USB_REQUEST_ION_READ_ROM, | |
2245 | 0xC0, addr, extAddr, transfer_buffer, | |
2246 | current_length, 300); | |
1da177e4 LT |
2247 | if (result < 0) |
2248 | break; | |
03f0dbf7 | 2249 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2250 | length -= current_length; |
2251 | addr += current_length; | |
2252 | data += current_length; | |
03f0dbf7 | 2253 | } |
1da177e4 | 2254 | |
03f0dbf7 | 2255 | kfree(transfer_buffer); |
1da177e4 LT |
2256 | return result; |
2257 | } | |
2258 | ||
2259 | ||
2260 | /**************************************************************************** | |
2261 | * send_iosp_ext_cmd | |
2262 | * Is used to send a IOSP message to the Edgeport device | |
2263 | ****************************************************************************/ | |
03f0dbf7 AC |
2264 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2265 | __u8 command, __u8 param) | |
1da177e4 LT |
2266 | { |
2267 | unsigned char *buffer; | |
2268 | unsigned char *currentCommand; | |
2269 | int length = 0; | |
2270 | int status = 0; | |
2271 | ||
03f0dbf7 | 2272 | buffer = kmalloc(10, GFP_ATOMIC); |
1da177e4 | 2273 | if (!buffer) { |
03f0dbf7 AC |
2274 | dev_err(&edge_port->port->dev, |
2275 | "%s - kmalloc(%d) failed.\n", __func__, 10); | |
1da177e4 LT |
2276 | return -ENOMEM; |
2277 | } | |
2278 | ||
2279 | currentCommand = buffer; | |
2280 | ||
03f0dbf7 AC |
2281 | MAKE_CMD_EXT_CMD(¤tCommand, &length, |
2282 | edge_port->port->number - edge_port->port->serial->minor, | |
2283 | command, param); | |
1da177e4 | 2284 | |
03f0dbf7 | 2285 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2286 | if (status) { |
2287 | /* something bad happened, let's free up the memory */ | |
2288 | kfree(buffer); | |
2289 | } | |
2290 | ||
2291 | return status; | |
2292 | } | |
2293 | ||
2294 | ||
2295 | /***************************************************************************** | |
2296 | * write_cmd_usb | |
2297 | * this function writes the given buffer out to the bulk write endpoint. | |
2298 | *****************************************************************************/ | |
03f0dbf7 AC |
2299 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2300 | unsigned char *buffer, int length) | |
1da177e4 | 2301 | { |
03f0dbf7 AC |
2302 | struct edgeport_serial *edge_serial = |
2303 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2304 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2305 | int status = 0; |
2306 | struct urb *urb; | |
1da177e4 | 2307 | |
984f6868 | 2308 | usb_serial_debug_data(debug, dev, __func__, length, buffer); |
1da177e4 LT |
2309 | |
2310 | /* Allocate our next urb */ | |
03f0dbf7 | 2311 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2312 | if (!urb) |
2313 | return -ENOMEM; | |
2314 | ||
96c706ed | 2315 | atomic_inc(&CmdUrbs); |
984f6868 GKH |
2316 | dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", |
2317 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2318 | |
03f0dbf7 AC |
2319 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2320 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2321 | edge_serial->bulk_out_endpoint), | |
2322 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2323 | |
cb8eaa8b | 2324 | edge_port->commandPending = true; |
1da177e4 LT |
2325 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2326 | ||
2327 | if (status) { | |
2328 | /* something went wrong */ | |
984f6868 GKH |
2329 | dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", |
2330 | __func__, status); | |
1da177e4 LT |
2331 | usb_kill_urb(urb); |
2332 | usb_free_urb(urb); | |
96c706ed | 2333 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2334 | return status; |
2335 | } | |
2336 | ||
1da177e4 | 2337 | #if 0 |
03f0dbf7 | 2338 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2339 | |
cb8eaa8b | 2340 | if (edge_port->commandPending) { |
1da177e4 | 2341 | /* command timed out */ |
984f6868 | 2342 | dev_dbg(dev, "%s - command timed out\n", __func__); |
1da177e4 LT |
2343 | status = -EINVAL; |
2344 | } | |
2345 | #endif | |
2346 | return status; | |
2347 | } | |
2348 | ||
2349 | ||
2350 | /***************************************************************************** | |
2351 | * send_cmd_write_baud_rate | |
2352 | * this function sends the proper command to change the baud rate of the | |
2353 | * specified port. | |
2354 | *****************************************************************************/ | |
03f0dbf7 AC |
2355 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2356 | int baudRate) | |
1da177e4 | 2357 | { |
03f0dbf7 AC |
2358 | struct edgeport_serial *edge_serial = |
2359 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2360 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2361 | unsigned char *cmdBuffer; |
2362 | unsigned char *currCmd; | |
2363 | int cmdLen = 0; | |
2364 | int divisor; | |
2365 | int status; | |
03f0dbf7 AC |
2366 | unsigned char number = |
2367 | edge_port->port->number - edge_port->port->serial->minor; | |
1da177e4 | 2368 | |
bc71e479 AK |
2369 | if (edge_serial->is_epic && |
2370 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
984f6868 GKH |
2371 | dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d\n", |
2372 | edge_port->port->number, baudRate); | |
6e8cf775 GKH |
2373 | return 0; |
2374 | } | |
2375 | ||
984f6868 GKH |
2376 | dev_dbg(dev, "%s - port = %d, baud = %d\n", __func__, |
2377 | edge_port->port->number, baudRate); | |
1da177e4 | 2378 | |
984f6868 | 2379 | status = calc_baud_rate_divisor(dev, baudRate, &divisor); |
1da177e4 | 2380 | if (status) { |
984f6868 | 2381 | dev_err(dev, "%s - bad baud rate\n", __func__); |
1da177e4 LT |
2382 | return status; |
2383 | } | |
2384 | ||
03f0dbf7 AC |
2385 | /* Alloc memory for the string of commands. */ |
2386 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
1da177e4 | 2387 | if (!cmdBuffer) { |
984f6868 | 2388 | dev_err(dev, "%s - kmalloc(%d) failed.\n", __func__, 0x100); |
1da177e4 LT |
2389 | return -ENOMEM; |
2390 | } | |
2391 | currCmd = cmdBuffer; | |
2392 | ||
03f0dbf7 AC |
2393 | /* Enable access to divisor latch */ |
2394 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2395 | |
03f0dbf7 AC |
2396 | /* Write the divisor itself */ |
2397 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2398 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2399 | |
03f0dbf7 AC |
2400 | /* Restore original value to disable access to divisor latch */ |
2401 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2402 | edge_port->shadowLCR); | |
1da177e4 | 2403 | |
03f0dbf7 | 2404 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2405 | if (status) { |
2406 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2407 | kfree(cmdBuffer); |
1da177e4 LT |
2408 | } |
2409 | ||
2410 | return status; | |
2411 | } | |
2412 | ||
2413 | ||
2414 | /***************************************************************************** | |
2415 | * calc_baud_rate_divisor | |
2416 | * this function calculates the proper baud rate divisor for the specified | |
2417 | * baud rate. | |
2418 | *****************************************************************************/ | |
984f6868 | 2419 | static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) |
1da177e4 LT |
2420 | { |
2421 | int i; | |
2422 | __u16 custom; | |
2423 | ||
52950ed4 | 2424 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2425 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2426 | *divisor = divisor_table[i].Divisor; |
2427 | return 0; | |
2428 | } | |
2429 | } | |
2430 | ||
03f0dbf7 AC |
2431 | /* We have tried all of the standard baud rates |
2432 | * lets try to calculate the divisor for this baud rate | |
2433 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2434 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2435 | /* get divisor */ |
1da177e4 LT |
2436 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2437 | ||
2438 | *divisor = custom; | |
2439 | ||
984f6868 | 2440 | dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); |
1da177e4 LT |
2441 | return 0; |
2442 | } | |
2443 | ||
2444 | return -1; | |
2445 | } | |
2446 | ||
2447 | ||
2448 | /***************************************************************************** | |
2449 | * send_cmd_write_uart_register | |
fd589a8f | 2450 | * this function builds up a uart register message and sends to the device. |
1da177e4 | 2451 | *****************************************************************************/ |
03f0dbf7 AC |
2452 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2453 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2454 | { |
03f0dbf7 AC |
2455 | struct edgeport_serial *edge_serial = |
2456 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2457 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2458 | unsigned char *cmdBuffer; |
2459 | unsigned char *currCmd; | |
2460 | unsigned long cmdLen = 0; | |
2461 | int status; | |
2462 | ||
984f6868 GKH |
2463 | dev_dbg(dev, "%s - write to %s register 0x%02x\n", |
2464 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2465 | |
bc71e479 AK |
2466 | if (edge_serial->is_epic && |
2467 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2468 | regNum == MCR) { | |
984f6868 | 2469 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); |
6e8cf775 GKH |
2470 | return 0; |
2471 | } | |
2472 | ||
bc71e479 AK |
2473 | if (edge_serial->is_epic && |
2474 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2475 | regNum == LCR) { | |
984f6868 | 2476 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); |
6e8cf775 GKH |
2477 | return 0; |
2478 | } | |
2479 | ||
03f0dbf7 AC |
2480 | /* Alloc memory for the string of commands. */ |
2481 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2482 | if (cmdBuffer == NULL) | |
1da177e4 | 2483 | return -ENOMEM; |
1da177e4 LT |
2484 | |
2485 | currCmd = cmdBuffer; | |
2486 | ||
03f0dbf7 AC |
2487 | /* Build a cmd in the buffer to write the given register */ |
2488 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, | |
2489 | edge_port->port->number - edge_port->port->serial->minor, | |
2490 | regNum, regValue); | |
1da177e4 LT |
2491 | |
2492 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2493 | if (status) { | |
2494 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2495 | kfree(cmdBuffer); |
1da177e4 LT |
2496 | } |
2497 | ||
2498 | return status; | |
2499 | } | |
2500 | ||
2501 | ||
2502 | /***************************************************************************** | |
2503 | * change_port_settings | |
03f0dbf7 AC |
2504 | * This routine is called to set the UART on the device to match the |
2505 | * specified new settings. | |
1da177e4 | 2506 | *****************************************************************************/ |
95da310e AC |
2507 | |
2508 | static void change_port_settings(struct tty_struct *tty, | |
2509 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2510 | { |
984f6868 | 2511 | struct device *dev = &edge_port->port->dev; |
03f0dbf7 AC |
2512 | struct edgeport_serial *edge_serial = |
2513 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2514 | int baud; |
2515 | unsigned cflag; | |
2516 | __u8 mask = 0xff; | |
2517 | __u8 lData; | |
2518 | __u8 lParity; | |
2519 | __u8 lStop; | |
2520 | __u8 rxFlow; | |
2521 | __u8 txFlow; | |
2522 | int status; | |
2523 | ||
984f6868 | 2524 | dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); |
1da177e4 | 2525 | |
cb8eaa8b RK |
2526 | if (!edge_port->open && |
2527 | !edge_port->openPending) { | |
984f6868 | 2528 | dev_dbg(dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
2529 | return; |
2530 | } | |
2531 | ||
1da177e4 LT |
2532 | cflag = tty->termios->c_cflag; |
2533 | ||
2534 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2535 | case CS5: |
2536 | lData = LCR_BITS_5; mask = 0x1f; | |
984f6868 | 2537 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
03f0dbf7 AC |
2538 | break; |
2539 | case CS6: | |
2540 | lData = LCR_BITS_6; mask = 0x3f; | |
984f6868 | 2541 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
03f0dbf7 AC |
2542 | break; |
2543 | case CS7: | |
2544 | lData = LCR_BITS_7; mask = 0x7f; | |
984f6868 | 2545 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
03f0dbf7 AC |
2546 | break; |
2547 | default: | |
2548 | case CS8: | |
2549 | lData = LCR_BITS_8; | |
984f6868 | 2550 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
03f0dbf7 | 2551 | break; |
1da177e4 LT |
2552 | } |
2553 | ||
2554 | lParity = LCR_PAR_NONE; | |
2555 | if (cflag & PARENB) { | |
2556 | if (cflag & CMSPAR) { | |
2557 | if (cflag & PARODD) { | |
2558 | lParity = LCR_PAR_MARK; | |
984f6868 | 2559 | dev_dbg(dev, "%s - parity = mark\n", __func__); |
1da177e4 LT |
2560 | } else { |
2561 | lParity = LCR_PAR_SPACE; | |
984f6868 | 2562 | dev_dbg(dev, "%s - parity = space\n", __func__); |
1da177e4 LT |
2563 | } |
2564 | } else if (cflag & PARODD) { | |
2565 | lParity = LCR_PAR_ODD; | |
984f6868 | 2566 | dev_dbg(dev, "%s - parity = odd\n", __func__); |
1da177e4 LT |
2567 | } else { |
2568 | lParity = LCR_PAR_EVEN; | |
984f6868 | 2569 | dev_dbg(dev, "%s - parity = even\n", __func__); |
1da177e4 LT |
2570 | } |
2571 | } else { | |
984f6868 | 2572 | dev_dbg(dev, "%s - parity = none\n", __func__); |
1da177e4 LT |
2573 | } |
2574 | ||
2575 | if (cflag & CSTOPB) { | |
2576 | lStop = LCR_STOP_2; | |
984f6868 | 2577 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
2578 | } else { |
2579 | lStop = LCR_STOP_1; | |
984f6868 | 2580 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 LT |
2581 | } |
2582 | ||
2583 | /* figure out the flow control settings */ | |
2584 | rxFlow = txFlow = 0x00; | |
2585 | if (cflag & CRTSCTS) { | |
2586 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2587 | txFlow |= IOSP_TX_FLOW_CTS; | |
984f6868 | 2588 | dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); |
1da177e4 | 2589 | } else { |
984f6868 | 2590 | dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); |
1da177e4 LT |
2591 | } |
2592 | ||
03f0dbf7 AC |
2593 | /* if we are implementing XON/XOFF, set the start and stop character |
2594 | in the device */ | |
1da177e4 LT |
2595 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2596 | unsigned char stop_char = STOP_CHAR(tty); | |
2597 | unsigned char start_char = START_CHAR(tty); | |
2598 | ||
6e8cf775 GKH |
2599 | if ((!edge_serial->is_epic) || |
2600 | ((edge_serial->is_epic) && | |
2601 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
03f0dbf7 AC |
2602 | send_iosp_ext_cmd(edge_port, |
2603 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2604 | send_iosp_ext_cmd(edge_port, | |
2605 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2606 | } |
1da177e4 LT |
2607 | |
2608 | /* if we are implementing INBOUND XON/XOFF */ | |
2609 | if (I_IXOFF(tty)) { | |
2610 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
984f6868 GKH |
2611 | dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2612 | __func__, start_char, stop_char); | |
1da177e4 | 2613 | } else { |
984f6868 | 2614 | dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2615 | } |
2616 | ||
2617 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2618 | if (I_IXON(tty)) { | |
2619 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
984f6868 GKH |
2620 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2621 | __func__, start_char, stop_char); | |
1da177e4 | 2622 | } else { |
984f6868 | 2623 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2624 | } |
2625 | } | |
2626 | ||
2627 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2628 | if ((!edge_serial->is_epic) || |
2629 | ((edge_serial->is_epic) && | |
2630 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2631 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2632 | if ((!edge_serial->is_epic) || | |
2633 | ((edge_serial->is_epic) && | |
2634 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2635 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2636 | |
2637 | ||
2638 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2639 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2640 | ||
2641 | edge_port->validDataMask = mask; | |
2642 | ||
2643 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2644 | status = send_cmd_write_uart_register(edge_port, LCR, |
2645 | edge_port->shadowLCR); | |
2646 | if (status != 0) | |
1da177e4 | 2647 | return; |
1da177e4 LT |
2648 | |
2649 | /* set up the MCR register and send it to the EdgePort */ | |
2650 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2651 | if (cflag & CBAUD) |
1da177e4 | 2652 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2653 | |
2654 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2655 | edge_port->shadowMCR); | |
2656 | if (status != 0) | |
1da177e4 | 2657 | return; |
1da177e4 LT |
2658 | |
2659 | /* Determine divisor based on baud rate */ | |
2660 | baud = tty_get_baud_rate(tty); | |
2661 | if (!baud) { | |
2662 | /* pick a default, any default... */ | |
2663 | baud = 9600; | |
2664 | } | |
2665 | ||
984f6868 | 2666 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
03f0dbf7 | 2667 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2668 | if (status == -1) { |
2669 | /* Speed change was not possible - put back the old speed */ | |
2670 | baud = tty_termios_baud_rate(old_termios); | |
2671 | tty_encode_baud_rate(tty, baud, baud); | |
2672 | } | |
1da177e4 LT |
2673 | } |
2674 | ||
2675 | ||
2676 | /**************************************************************************** | |
2677 | * unicode_to_ascii | |
2678 | * Turns a string from Unicode into ASCII. | |
2679 | * Doesn't do a good job with any characters that are outside the normal | |
2680 | * ASCII range, but it's only for debugging... | |
2681 | * NOTE: expects the unicode in LE format | |
2682 | ****************************************************************************/ | |
03f0dbf7 AC |
2683 | static void unicode_to_ascii(char *string, int buflen, |
2684 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2685 | { |
2686 | int i; | |
2687 | ||
ad93375a | 2688 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2689 | return; |
ad93375a | 2690 | --buflen; /* space for nul */ |
1da177e4 | 2691 | |
ad93375a PZ |
2692 | for (i = 0; i < unicode_size; i++) { |
2693 | if (i >= buflen) | |
2694 | break; | |
1da177e4 | 2695 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2696 | } |
2697 | string[i] = 0x00; | |
1da177e4 LT |
2698 | } |
2699 | ||
2700 | ||
2701 | /**************************************************************************** | |
2702 | * get_manufacturing_desc | |
03f0dbf7 | 2703 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2704 | * structure. |
2705 | ****************************************************************************/ | |
03f0dbf7 | 2706 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2707 | { |
984f6868 | 2708 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2709 | int response; |
2710 | ||
984f6868 | 2711 | dev_dbg(dev, "getting manufacturer descriptor\n"); |
1da177e4 | 2712 | |
03f0dbf7 AC |
2713 | response = rom_read(edge_serial->serial, |
2714 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2715 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2716 | EDGE_MANUF_DESC_LEN, | |
2717 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2718 | |
03f0dbf7 | 2719 | if (response < 1) |
984f6868 | 2720 | dev_err(dev, "error in getting manufacturer descriptor\n"); |
03f0dbf7 | 2721 | else { |
1da177e4 | 2722 | char string[30]; |
984f6868 GKH |
2723 | dev_dbg(dev, "**Manufacturer Descriptor\n"); |
2724 | dev_dbg(dev, " RomSize: %dK\n", | |
03f0dbf7 | 2725 | edge_serial->manuf_descriptor.RomSize); |
984f6868 | 2726 | dev_dbg(dev, " RamSize: %dK\n", |
03f0dbf7 | 2727 | edge_serial->manuf_descriptor.RamSize); |
984f6868 | 2728 | dev_dbg(dev, " CpuRev: %d\n", |
03f0dbf7 | 2729 | edge_serial->manuf_descriptor.CpuRev); |
984f6868 | 2730 | dev_dbg(dev, " BoardRev: %d\n", |
03f0dbf7 | 2731 | edge_serial->manuf_descriptor.BoardRev); |
984f6868 | 2732 | dev_dbg(dev, " NumPorts: %d\n", |
03f0dbf7 | 2733 | edge_serial->manuf_descriptor.NumPorts); |
984f6868 | 2734 | dev_dbg(dev, " DescDate: %d/%d/%d\n", |
03f0dbf7 AC |
2735 | edge_serial->manuf_descriptor.DescDate[0], |
2736 | edge_serial->manuf_descriptor.DescDate[1], | |
2737 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2738 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2739 | edge_serial->manuf_descriptor.SerialNumber, |
2740 | edge_serial->manuf_descriptor.SerNumLength/2); | |
984f6868 | 2741 | dev_dbg(dev, " SerialNumber: %s\n", string); |
4bc203d9 | 2742 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2743 | edge_serial->manuf_descriptor.AssemblyNumber, |
2744 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
984f6868 | 2745 | dev_dbg(dev, " AssemblyNumber: %s\n", string); |
4bc203d9 | 2746 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2747 | edge_serial->manuf_descriptor.OemAssyNumber, |
2748 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
984f6868 GKH |
2749 | dev_dbg(dev, " OemAssyNumber: %s\n", string); |
2750 | dev_dbg(dev, " UartType: %d\n", | |
03f0dbf7 | 2751 | edge_serial->manuf_descriptor.UartType); |
984f6868 | 2752 | dev_dbg(dev, " IonPid: %d\n", |
03f0dbf7 | 2753 | edge_serial->manuf_descriptor.IonPid); |
984f6868 | 2754 | dev_dbg(dev, " IonConfig: %d\n", |
03f0dbf7 | 2755 | edge_serial->manuf_descriptor.IonConfig); |
1da177e4 LT |
2756 | } |
2757 | } | |
2758 | ||
2759 | ||
2760 | /**************************************************************************** | |
2761 | * get_boot_desc | |
03f0dbf7 | 2762 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2763 | * structure. |
2764 | ****************************************************************************/ | |
03f0dbf7 | 2765 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2766 | { |
984f6868 | 2767 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2768 | int response; |
2769 | ||
984f6868 | 2770 | dev_dbg(dev, "getting boot descriptor\n"); |
1da177e4 | 2771 | |
03f0dbf7 AC |
2772 | response = rom_read(edge_serial->serial, |
2773 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2774 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2775 | EDGE_BOOT_DESC_LEN, | |
2776 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2777 | |
03f0dbf7 | 2778 | if (response < 1) |
984f6868 | 2779 | dev_err(dev, "error in getting boot descriptor\n"); |
03f0dbf7 | 2780 | else { |
984f6868 GKH |
2781 | dev_dbg(dev, "**Boot Descriptor:\n"); |
2782 | dev_dbg(dev, " BootCodeLength: %d\n", | |
2783 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2784 | dev_dbg(dev, " MajorVersion: %d\n", | |
03f0dbf7 | 2785 | edge_serial->boot_descriptor.MajorVersion); |
984f6868 | 2786 | dev_dbg(dev, " MinorVersion: %d\n", |
03f0dbf7 | 2787 | edge_serial->boot_descriptor.MinorVersion); |
984f6868 | 2788 | dev_dbg(dev, " BuildNumber: %d\n", |
03f0dbf7 | 2789 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
984f6868 | 2790 | dev_dbg(dev, " Capabilities: 0x%x\n", |
03f0dbf7 | 2791 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); |
984f6868 | 2792 | dev_dbg(dev, " UConfig0: %d\n", |
03f0dbf7 | 2793 | edge_serial->boot_descriptor.UConfig0); |
984f6868 | 2794 | dev_dbg(dev, " UConfig1: %d\n", |
03f0dbf7 | 2795 | edge_serial->boot_descriptor.UConfig1); |
1da177e4 LT |
2796 | } |
2797 | } | |
2798 | ||
2799 | ||
2800 | /**************************************************************************** | |
2801 | * load_application_firmware | |
2802 | * This is called to load the application firmware to the device | |
2803 | ****************************************************************************/ | |
03f0dbf7 | 2804 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2805 | { |
984f6868 | 2806 | struct device *dev = &edge_serial->serial->dev->dev; |
5b9ea932 JS |
2807 | const struct ihex_binrec *rec; |
2808 | const struct firmware *fw; | |
2809 | const char *fw_name; | |
2810 | const char *fw_info; | |
1da177e4 | 2811 | int response; |
5b9ea932 JS |
2812 | __u32 Operaddr; |
2813 | __u16 build; | |
1da177e4 LT |
2814 | |
2815 | switch (edge_serial->product_info.iDownloadFile) { | |
2816 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2817 | fw_info = "downloading firmware version (930)"; |
2818 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2819 | break; |
2820 | ||
2821 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2822 | fw_info = "downloading firmware version (80251)"; |
2823 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2824 | break; |
2825 | ||
2826 | case EDGE_DOWNLOAD_FILE_NONE: | |
984f6868 | 2827 | dev_dbg(dev, "No download file specified, skipping download\n"); |
1da177e4 LT |
2828 | return; |
2829 | ||
2830 | default: | |
2831 | return; | |
2832 | } | |
2833 | ||
5b9ea932 JS |
2834 | response = request_ihex_firmware(&fw, fw_name, |
2835 | &edge_serial->serial->dev->dev); | |
2836 | if (response) { | |
984f6868 | 2837 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
2838 | fw_name, response); |
2839 | return; | |
2840 | } | |
2841 | ||
2842 | rec = (const struct ihex_binrec *)fw->data; | |
2843 | build = (rec->data[2] << 8) | rec->data[3]; | |
2844 | ||
984f6868 | 2845 | dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); |
5b9ea932 | 2846 | |
271c1150 BM |
2847 | edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
2848 | edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; | |
5b9ea932 | 2849 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
1da177e4 | 2850 | |
5b9ea932 JS |
2851 | for (rec = ihex_next_binrec(rec); rec; |
2852 | rec = ihex_next_binrec(rec)) { | |
2853 | Operaddr = be32_to_cpu(rec->addr); | |
2854 | response = sram_write(edge_serial->serial, | |
2855 | Operaddr >> 16, | |
2856 | Operaddr & 0xFFFF, | |
2857 | be16_to_cpu(rec->len), | |
2858 | &rec->data[0]); | |
1da177e4 | 2859 | if (response < 0) { |
5b9ea932 JS |
2860 | dev_err(&edge_serial->serial->dev->dev, |
2861 | "sram_write failed (%x, %x, %d)\n", | |
2862 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2863 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2864 | break; |
2865 | } | |
2866 | } | |
2867 | ||
984f6868 GKH |
2868 | dev_dbg(dev, "sending exec_dl_code\n"); |
2869 | response = usb_control_msg (edge_serial->serial->dev, | |
2870 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2871 | USB_REQUEST_ION_EXEC_DL_CODE, | |
1da177e4 LT |
2872 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); |
2873 | ||
5b9ea932 | 2874 | release_firmware(fw); |
1da177e4 LT |
2875 | } |
2876 | ||
2877 | ||
2878 | /**************************************************************************** | |
2879 | * edge_startup | |
2880 | ****************************************************************************/ | |
03f0dbf7 | 2881 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2882 | { |
2883 | struct edgeport_serial *edge_serial; | |
2884 | struct edgeport_port *edge_port; | |
2885 | struct usb_device *dev; | |
984f6868 | 2886 | struct device *ddev = &serial->dev->dev; |
bfd5df3c | 2887 | int i, j; |
6e8cf775 | 2888 | int response; |
cb8eaa8b RK |
2889 | bool interrupt_in_found; |
2890 | bool bulk_in_found; | |
2891 | bool bulk_out_found; | |
6e8cf775 GKH |
2892 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2893 | EDGE_COMPATIBILITY_MASK1, | |
2894 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2895 | |
2896 | dev = serial->dev; | |
2897 | ||
2898 | /* create our private serial structure */ | |
80b6ca48 | 2899 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2900 | if (edge_serial == NULL) { |
441b62c1 | 2901 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2902 | return -ENOMEM; |
2903 | } | |
1da177e4 LT |
2904 | spin_lock_init(&edge_serial->es_lock); |
2905 | edge_serial->serial = serial; | |
2906 | usb_set_serial_data(serial, edge_serial); | |
2907 | ||
2908 | /* get the name for the device from the device */ | |
f10718f5 | 2909 | i = usb_string(dev, dev->descriptor.iManufacturer, |
ad93375a | 2910 | &edge_serial->name[0], MAX_NAME_LEN+1); |
f10718f5 DC |
2911 | if (i < 0) |
2912 | i = 0; | |
ad93375a | 2913 | edge_serial->name[i++] = ' '; |
f10718f5 | 2914 | usb_string(dev, dev->descriptor.iProduct, |
ad93375a | 2915 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
1da177e4 LT |
2916 | |
2917 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2918 | ||
6e8cf775 GKH |
2919 | /* Read the epic descriptor */ |
2920 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2921 | /* memcpy descriptor to Supports structures */ | |
2922 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2923 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2924 | |
6e8cf775 | 2925 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 2926 | get_manufacturing_desc(edge_serial); |
1da177e4 | 2927 | |
6e8cf775 | 2928 | /* get the boot descriptor */ |
03f0dbf7 | 2929 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
2930 | |
2931 | get_product_info(edge_serial); | |
2932 | } | |
1da177e4 LT |
2933 | |
2934 | /* set the number of ports from the manufacturing description */ | |
2935 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2936 | if ((!edge_serial->is_epic) && |
2937 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
984f6868 GKH |
2938 | dev_warn(ddev, |
2939 | "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", | |
6e8cf775 GKH |
2940 | edge_serial->product_info.NumPorts, |
2941 | serial->num_ports); | |
1da177e4 LT |
2942 | } |
2943 | ||
984f6868 | 2944 | dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); |
1da177e4 | 2945 | |
6e8cf775 GKH |
2946 | /* If not an EPiC device */ |
2947 | if (!edge_serial->is_epic) { | |
2948 | /* now load the application firmware into this device */ | |
03f0dbf7 | 2949 | load_application_firmware(edge_serial); |
1da177e4 | 2950 | |
984f6868 | 2951 | dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); |
1da177e4 | 2952 | |
6e8cf775 | 2953 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 2954 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 2955 | |
984f6868 | 2956 | dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); |
6e8cf775 GKH |
2957 | |
2958 | /* set the configuration to use #1 */ | |
984f6868 | 2959 | /* dev_dbg(ddev, "set_configuration 1\n"); */ |
03f0dbf7 | 2960 | /* usb_set_configuration (dev, 1); */ |
6e8cf775 | 2961 | } |
984f6868 | 2962 | dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", |
5b9ea932 JS |
2963 | edge_serial->product_info.FirmwareMajorVersion, |
2964 | edge_serial->product_info.FirmwareMinorVersion, | |
2965 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 2966 | |
03f0dbf7 | 2967 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
2968 | * as the structures aren't created yet. */ |
2969 | ||
2970 | /* set up our port private structures */ | |
2971 | for (i = 0; i < serial->num_ports; ++i) { | |
1ac93a30 | 2972 | edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 2973 | if (edge_port == NULL) { |
984f6868 | 2974 | dev_err(ddev, "%s - Out of memory\n", __func__); |
bfd5df3c | 2975 | for (j = 0; j < i; ++j) { |
03f0dbf7 AC |
2976 | kfree(usb_get_serial_port_data(serial->port[j])); |
2977 | usb_set_serial_port_data(serial->port[j], | |
2978 | NULL); | |
bfd5df3c | 2979 | } |
1da177e4 LT |
2980 | usb_set_serial_data(serial, NULL); |
2981 | kfree(edge_serial); | |
2982 | return -ENOMEM; | |
2983 | } | |
1da177e4 LT |
2984 | spin_lock_init(&edge_port->ep_lock); |
2985 | edge_port->port = serial->port[i]; | |
2986 | usb_set_serial_port_data(serial->port[i], edge_port); | |
2987 | } | |
6e8cf775 GKH |
2988 | |
2989 | response = 0; | |
2990 | ||
2991 | if (edge_serial->is_epic) { | |
03f0dbf7 AC |
2992 | /* EPIC thing, set up our interrupt polling now and our read |
2993 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 2994 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
03f0dbf7 AC |
2995 | for (i = 0; i < serial->interface->altsetting[0] |
2996 | .desc.bNumEndpoints; ++i) { | |
6e8cf775 GKH |
2997 | struct usb_endpoint_descriptor *endpoint; |
2998 | int buffer_size; | |
2999 | ||
03f0dbf7 AC |
3000 | endpoint = &serial->interface->altsetting[0]. |
3001 | endpoint[i].desc; | |
29cc8897 | 3002 | buffer_size = usb_endpoint_maxp(endpoint); |
cb8eaa8b | 3003 | if (!interrupt_in_found && |
6e8cf775 GKH |
3004 | (usb_endpoint_is_int_in(endpoint))) { |
3005 | /* we found a interrupt in endpoint */ | |
984f6868 | 3006 | dev_dbg(ddev, "found interrupt in\n"); |
6e8cf775 GKH |
3007 | |
3008 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3009 | edge_serial->interrupt_read_urb = |
3010 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3011 | if (!edge_serial->interrupt_read_urb) { |
984f6868 | 3012 | dev_err(ddev, "out of memory\n"); |
6e8cf775 GKH |
3013 | return -ENOMEM; |
3014 | } | |
03f0dbf7 AC |
3015 | edge_serial->interrupt_in_buffer = |
3016 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3017 | if (!edge_serial->interrupt_in_buffer) { |
984f6868 | 3018 | dev_err(ddev, "out of memory\n"); |
6e8cf775 GKH |
3019 | usb_free_urb(edge_serial->interrupt_read_urb); |
3020 | return -ENOMEM; | |
3021 | } | |
03f0dbf7 AC |
3022 | edge_serial->interrupt_in_endpoint = |
3023 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3024 | |
3025 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
3026 | usb_fill_int_urb( |
3027 | edge_serial->interrupt_read_urb, | |
3028 | dev, | |
3029 | usb_rcvintpipe(dev, | |
3030 | endpoint->bEndpointAddress), | |
3031 | edge_serial->interrupt_in_buffer, | |
3032 | buffer_size, | |
3033 | edge_interrupt_callback, | |
3034 | edge_serial, | |
3035 | endpoint->bInterval); | |
6e8cf775 | 3036 | |
cb8eaa8b | 3037 | interrupt_in_found = true; |
6e8cf775 GKH |
3038 | } |
3039 | ||
cb8eaa8b | 3040 | if (!bulk_in_found && |
03f0dbf7 | 3041 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 | 3042 | /* we found a bulk in endpoint */ |
984f6868 | 3043 | dev_dbg(ddev, "found bulk in\n"); |
6e8cf775 GKH |
3044 | |
3045 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3046 | edge_serial->read_urb = |
3047 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3048 | if (!edge_serial->read_urb) { |
984f6868 | 3049 | dev_err(ddev, "out of memory\n"); |
6e8cf775 GKH |
3050 | return -ENOMEM; |
3051 | } | |
03f0dbf7 AC |
3052 | edge_serial->bulk_in_buffer = |
3053 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3054 | if (!edge_serial->bulk_in_buffer) { |
194343d9 | 3055 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3056 | usb_free_urb(edge_serial->read_urb); |
3057 | return -ENOMEM; | |
3058 | } | |
03f0dbf7 AC |
3059 | edge_serial->bulk_in_endpoint = |
3060 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3061 | |
3062 | /* set up our bulk in urb */ | |
3063 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
3064 | usb_rcvbulkpipe(dev, |
3065 | endpoint->bEndpointAddress), | |
3066 | edge_serial->bulk_in_buffer, | |
29cc8897 | 3067 | usb_endpoint_maxp(endpoint), |
03f0dbf7 AC |
3068 | edge_bulk_in_callback, |
3069 | edge_serial); | |
cb8eaa8b | 3070 | bulk_in_found = true; |
6e8cf775 GKH |
3071 | } |
3072 | ||
cb8eaa8b | 3073 | if (!bulk_out_found && |
6e8cf775 GKH |
3074 | (usb_endpoint_is_bulk_out(endpoint))) { |
3075 | /* we found a bulk out endpoint */ | |
984f6868 | 3076 | dev_dbg(ddev, "found bulk out\n"); |
03f0dbf7 AC |
3077 | edge_serial->bulk_out_endpoint = |
3078 | endpoint->bEndpointAddress; | |
cb8eaa8b | 3079 | bulk_out_found = true; |
6e8cf775 GKH |
3080 | } |
3081 | } | |
3082 | ||
cb8eaa8b | 3083 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
984f6868 | 3084 | dev_err(ddev, "Error - the proper endpoints were not found!\n"); |
6e8cf775 GKH |
3085 | return -ENODEV; |
3086 | } | |
3087 | ||
3088 | /* start interrupt read for this edgeport this interrupt will | |
3089 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
3090 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
3091 | GFP_KERNEL); | |
6e8cf775 | 3092 | if (response) |
984f6868 | 3093 | dev_err(ddev, "%s - Error %d submitting control urb\n", |
194343d9 | 3094 | __func__, response); |
6e8cf775 GKH |
3095 | } |
3096 | return response; | |
1da177e4 LT |
3097 | } |
3098 | ||
3099 | ||
3100 | /**************************************************************************** | |
f9c99bb8 | 3101 | * edge_disconnect |
1da177e4 LT |
3102 | * This function is called whenever the device is removed from the usb bus. |
3103 | ****************************************************************************/ | |
f9c99bb8 | 3104 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 3105 | { |
6e8cf775 | 3106 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 3107 | |
1da177e4 | 3108 | /* stop reads and writes on all ports */ |
6e8cf775 GKH |
3109 | /* free up our endpoint stuff */ |
3110 | if (edge_serial->is_epic) { | |
74ac07e8 | 3111 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
3112 | usb_free_urb(edge_serial->interrupt_read_urb); |
3113 | kfree(edge_serial->interrupt_in_buffer); | |
3114 | ||
74ac07e8 | 3115 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
3116 | usb_free_urb(edge_serial->read_urb); |
3117 | kfree(edge_serial->bulk_in_buffer); | |
3118 | } | |
f9c99bb8 AS |
3119 | } |
3120 | ||
3121 | ||
3122 | /**************************************************************************** | |
3123 | * edge_release | |
3124 | * This function is called when the device structure is deallocated. | |
3125 | ****************************************************************************/ | |
3126 | static void edge_release(struct usb_serial *serial) | |
3127 | { | |
3128 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
3129 | int i; | |
3130 | ||
f9c99bb8 AS |
3131 | for (i = 0; i < serial->num_ports; ++i) |
3132 | kfree(usb_get_serial_port_data(serial->port[i])); | |
6e8cf775 GKH |
3133 | |
3134 | kfree(edge_serial); | |
1da177e4 LT |
3135 | } |
3136 | ||
68e24113 | 3137 | module_usb_serial_driver(serial_drivers, id_table_combined); |
1da177e4 | 3138 | |
03f0dbf7 AC |
3139 | MODULE_AUTHOR(DRIVER_AUTHOR); |
3140 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3141 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3142 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3143 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3144 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3145 | MODULE_FIRMWARE("edgeport/down2.fw"); | |
1da177e4 LT |
3146 | |
3147 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3148 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |