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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> | |
45 | #include <asm/uaccess.h> | |
46 | #include <linux/usb.h> | |
a969888c | 47 | #include <linux/usb/serial.h> |
1da177e4 LT |
48 | #include "io_edgeport.h" |
49 | #include "io_ionsp.h" /* info for the iosp messages */ | |
50 | #include "io_16654.h" /* 16654 UART defines */ | |
51 | ||
52 | /* | |
53 | * Version Information | |
54 | */ | |
55 | #define DRIVER_VERSION "v2.7" | |
56 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
57 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
58 | ||
59 | /* First, the latest boot code - for first generation edgeports */ | |
60 | #define IMAGE_ARRAY_NAME BootCodeImage_GEN1 | |
61 | #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1 | |
62 | #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */ | |
63 | ||
64 | /* for second generation edgeports */ | |
65 | #define IMAGE_ARRAY_NAME BootCodeImage_GEN2 | |
66 | #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2 | |
67 | #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */ | |
68 | ||
69 | /* Then finally the main run-time operational code - for first generation edgeports */ | |
70 | #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1 | |
71 | #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1 | |
72 | #include "io_fw_down.h" /* Define array OperationalCodeImage[] */ | |
73 | ||
74 | /* for second generation edgeports */ | |
75 | #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2 | |
76 | #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2 | |
77 | #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */ | |
78 | ||
79 | #define MAX_NAME_LEN 64 | |
80 | ||
81 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
82 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
83 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
84 | ||
85 | /* receive port state */ | |
86 | enum RXSTATE { | |
87 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ | |
88 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
89 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
90 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
91 | }; | |
92 | ||
93 | ||
94 | /* Transmit Fifo | |
95 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
96 | * The maximum amount of data buffered in both the edgeport | |
97 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. | |
98 | */ | |
99 | struct TxFifo { | |
100 | unsigned int head; /* index to head pointer (write) */ | |
101 | unsigned int tail; /* index to tail pointer (read) */ | |
102 | unsigned int count; /* Bytes in queue */ | |
103 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
104 | unsigned char *fifo; /* allocated Buffer */ | |
105 | }; | |
106 | ||
107 | /* This structure holds all of the local port information */ | |
108 | struct edgeport_port { | |
109 | __u16 txCredits; /* our current credits for this port */ | |
110 | __u16 maxTxCredits; /* the max size of the port */ | |
111 | ||
112 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
113 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 114 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
115 | spinlock_t ep_lock; |
116 | ||
117 | __u8 shadowLCR; /* last LCR value received */ | |
118 | __u8 shadowMCR; /* last MCR value received */ | |
119 | __u8 shadowMSR; /* last MSR value received */ | |
120 | __u8 shadowLSR; /* last LSR value received */ | |
121 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
122 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
123 | __u8 validDataMask; | |
124 | __u32 baudRate; | |
125 | ||
cb8eaa8b RK |
126 | bool open; |
127 | bool openPending; | |
128 | bool commandPending; | |
129 | bool closePending; | |
130 | bool chaseResponsePending; | |
1da177e4 LT |
131 | |
132 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
133 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
134 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
135 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
136 | ||
137 | struct async_icount icount; | |
138 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
139 | }; | |
140 | ||
141 | ||
142 | /* This structure holds all of the individual device information */ | |
143 | struct edgeport_serial { | |
ad93375a | 144 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
145 | |
146 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
147 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
148 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
149 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
150 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
151 | |
152 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
153 | unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ | |
154 | struct urb * interrupt_read_urb; /* our interrupt urb */ | |
155 | ||
156 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
157 | unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ | |
158 | struct urb * read_urb; /* our bulk read urb */ | |
cb8eaa8b | 159 | bool read_in_progress; |
1da177e4 LT |
160 | spinlock_t es_lock; |
161 | ||
162 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
163 | ||
164 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
165 | ||
166 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
167 | __u8 rxHeader1; /* receive header byte 1 */ | |
168 | __u8 rxHeader2; /* receive header byte 2 */ | |
169 | __u8 rxHeader3; /* receive header byte 3 */ | |
170 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
171 | __u8 rxStatusCode; /* the receive status code */ | |
172 | __u8 rxStatusParam; /* the receive status paramater */ | |
173 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
174 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
175 | }; | |
176 | ||
177 | /* baud rate information */ | |
178 | struct divisor_table_entry { | |
179 | __u32 BaudRate; | |
180 | __u16 Divisor; | |
181 | }; | |
182 | ||
183 | // | |
184 | // Define table of divisors for Rev A EdgePort/4 hardware | |
185 | // These assume a 3.6864MHz crystal, the standard /16, and | |
186 | // MCR.7 = 0. | |
187 | // | |
4c4c9432 | 188 | static const struct divisor_table_entry divisor_table[] = { |
1da177e4 LT |
189 | { 50, 4608}, |
190 | { 75, 3072}, | |
191 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
192 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
193 | { 150, 1536}, | |
194 | { 300, 768}, | |
195 | { 600, 384}, | |
196 | { 1200, 192}, | |
197 | { 1800, 128}, | |
198 | { 2400, 96}, | |
199 | { 4800, 48}, | |
200 | { 7200, 32}, | |
201 | { 9600, 24}, | |
202 | { 14400, 16}, | |
203 | { 19200, 12}, | |
204 | { 38400, 6}, | |
205 | { 57600, 4}, | |
206 | { 115200, 2}, | |
207 | { 230400, 1}, | |
208 | }; | |
209 | ||
210 | /* local variables */ | |
211 | static int debug; | |
212 | ||
213 | static int low_latency = 1; /* tty low latency flag, on by default */ | |
214 | ||
96c706ed | 215 | static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */ |
1da177e4 LT |
216 | |
217 | ||
218 | /* local function prototypes */ | |
219 | ||
220 | /* function prototypes for all URB callbacks */ | |
7d12e780 DH |
221 | static void edge_interrupt_callback (struct urb *urb); |
222 | static void edge_bulk_in_callback (struct urb *urb); | |
223 | static void edge_bulk_out_data_callback (struct urb *urb); | |
224 | static void edge_bulk_out_cmd_callback (struct urb *urb); | |
1da177e4 LT |
225 | |
226 | /* function prototypes for the usbserial callbacks */ | |
227 | static int edge_open (struct usb_serial_port *port, struct file *filp); | |
228 | static void edge_close (struct usb_serial_port *port, struct file *filp); | |
229 | static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
230 | static int edge_write_room (struct usb_serial_port *port); | |
231 | static int edge_chars_in_buffer (struct usb_serial_port *port); | |
232 | static void edge_throttle (struct usb_serial_port *port); | |
233 | static void edge_unthrottle (struct usb_serial_port *port); | |
606d099c | 234 | static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); |
1da177e4 LT |
235 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg); |
236 | static void edge_break (struct usb_serial_port *port, int break_state); | |
237 | static int edge_tiocmget (struct usb_serial_port *port, struct file *file); | |
238 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); | |
239 | static int edge_startup (struct usb_serial *serial); | |
240 | static void edge_shutdown (struct usb_serial *serial); | |
241 | ||
242 | ||
243 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
244 | ||
1da177e4 LT |
245 | /* function prototypes for all of our local functions */ |
246 | static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength); | |
247 | static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3); | |
248 | static void edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length); | |
249 | static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr); | |
250 | static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data); | |
251 | static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param); | |
252 | static int calc_baud_rate_divisor (int baud_rate, int *divisor); | |
253 | static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate); | |
606d099c | 254 | static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios); |
1da177e4 LT |
255 | static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue); |
256 | static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength); | |
257 | static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port); | |
258 | ||
259 | static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); | |
260 | static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); | |
261 | static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); | |
262 | static void get_manufacturing_desc (struct edgeport_serial *edge_serial); | |
263 | static void get_boot_desc (struct edgeport_serial *edge_serial); | |
264 | static void load_application_firmware (struct edgeport_serial *edge_serial); | |
265 | ||
ad93375a | 266 | static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size); |
1da177e4 LT |
267 | |
268 | ||
269 | // ************************************************************************ | |
270 | // ************************************************************************ | |
271 | // ************************************************************************ | |
272 | // ************************************************************************ | |
273 | ||
274 | /************************************************************************ | |
275 | * * | |
276 | * update_edgeport_E2PROM() Compare current versions of * | |
277 | * Boot ROM and Manufacture * | |
278 | * Descriptors with versions * | |
279 | * embedded in this driver * | |
280 | * * | |
281 | ************************************************************************/ | |
282 | static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial) | |
283 | { | |
284 | __u32 BootCurVer; | |
285 | __u32 BootNewVer; | |
286 | __u8 BootMajorVersion; | |
287 | __u8 BootMinorVersion; | |
288 | __le16 BootBuildNumber; | |
289 | __u8 *BootImage; | |
290 | __u32 BootSize; | |
291 | struct edge_firmware_image_record *record; | |
292 | unsigned char *firmware; | |
293 | int response; | |
294 | ||
295 | ||
296 | switch (edge_serial->product_info.iDownloadFile) { | |
297 | case EDGE_DOWNLOAD_FILE_I930: | |
298 | BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion; | |
299 | BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion; | |
300 | BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber); | |
301 | BootImage = &BootCodeImage_GEN1[0]; | |
302 | BootSize = sizeof( BootCodeImage_GEN1 ); | |
303 | break; | |
304 | ||
305 | case EDGE_DOWNLOAD_FILE_80251: | |
306 | BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion; | |
307 | BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion; | |
308 | BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber); | |
309 | BootImage = &BootCodeImage_GEN2[0]; | |
310 | BootSize = sizeof( BootCodeImage_GEN2 ); | |
311 | break; | |
312 | ||
313 | default: | |
314 | return; | |
315 | } | |
316 | ||
317 | // Check Boot Image Version | |
318 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + | |
319 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
320 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
321 | ||
322 | BootNewVer = (BootMajorVersion << 24) + | |
323 | (BootMinorVersion << 16) + | |
324 | le16_to_cpu(BootBuildNumber); | |
325 | ||
326 | dbg("Current Boot Image version %d.%d.%d", | |
327 | edge_serial->boot_descriptor.MajorVersion, | |
328 | edge_serial->boot_descriptor.MinorVersion, | |
329 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
330 | ||
331 | ||
332 | if (BootNewVer > BootCurVer) { | |
333 | dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", | |
334 | edge_serial->boot_descriptor.MajorVersion, | |
335 | edge_serial->boot_descriptor.MinorVersion, | |
336 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
337 | BootMajorVersion, | |
338 | BootMinorVersion, | |
339 | le16_to_cpu(BootBuildNumber)); | |
340 | ||
341 | ||
342 | dbg("Downloading new Boot Image"); | |
343 | ||
344 | firmware = BootImage; | |
345 | ||
346 | for (;;) { | |
347 | record = (struct edge_firmware_image_record *)firmware; | |
348 | response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]); | |
349 | if (response < 0) { | |
350 | dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len)); | |
351 | break; | |
352 | } | |
353 | firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len); | |
354 | if (firmware >= &BootImage[BootSize]) { | |
355 | break; | |
356 | } | |
357 | } | |
358 | } else { | |
359 | dbg("Boot Image -- already up to date"); | |
360 | } | |
361 | } | |
362 | ||
363 | ||
364 | /************************************************************************ | |
365 | * * | |
366 | * Get string descriptor from device * | |
367 | * * | |
368 | ************************************************************************/ | |
ad93375a | 369 | static int get_string (struct usb_device *dev, int Id, char *string, int buflen) |
1da177e4 LT |
370 | { |
371 | struct usb_string_descriptor StringDesc; | |
372 | struct usb_string_descriptor *pStringDesc; | |
373 | ||
374 | dbg("%s - USB String ID = %d", __FUNCTION__, Id ); | |
375 | ||
376 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { | |
377 | return 0; | |
378 | } | |
379 | ||
380 | pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); | |
381 | ||
382 | if (!pStringDesc) { | |
383 | return 0; | |
384 | } | |
385 | ||
386 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { | |
387 | kfree(pStringDesc); | |
388 | return 0; | |
389 | } | |
390 | ||
ad93375a | 391 | unicode_to_ascii(string, buflen, pStringDesc->wData, pStringDesc->bLength/2); |
1da177e4 LT |
392 | |
393 | kfree(pStringDesc); | |
6e8cf775 | 394 | dbg("%s - USB String %s", __FUNCTION__, string); |
1da177e4 LT |
395 | return strlen(string); |
396 | } | |
397 | ||
398 | ||
399 | #if 0 | |
400 | /************************************************************************ | |
401 | * | |
402 | * Get string descriptor from device | |
403 | * | |
404 | ************************************************************************/ | |
405 | static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc) | |
406 | { | |
407 | struct usb_string_descriptor StringDesc; | |
408 | struct usb_string_descriptor *pStringDesc; | |
409 | ||
410 | dbg("%s - USB String ID = %d", __FUNCTION__, Id ); | |
411 | ||
412 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { | |
413 | return 0; | |
414 | } | |
415 | ||
416 | pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); | |
417 | ||
418 | if (!pStringDesc) { | |
419 | return -1; | |
420 | } | |
421 | ||
422 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { | |
423 | kfree(pStringDesc); | |
424 | return -1; | |
425 | } | |
426 | ||
427 | *pRetDesc = pStringDesc; | |
428 | return 0; | |
429 | } | |
430 | #endif | |
431 | ||
6e8cf775 GKH |
432 | static void dump_product_info(struct edgeport_product_info *product_info) |
433 | { | |
434 | // Dump Product Info structure | |
435 | dbg("**Product Information:"); | |
436 | dbg(" ProductId %x", product_info->ProductId ); | |
437 | dbg(" NumPorts %d", product_info->NumPorts ); | |
438 | dbg(" ProdInfoVer %d", product_info->ProdInfoVer ); | |
439 | dbg(" IsServer %d", product_info->IsServer); | |
440 | dbg(" IsRS232 %d", product_info->IsRS232 ); | |
441 | dbg(" IsRS422 %d", product_info->IsRS422 ); | |
442 | dbg(" IsRS485 %d", product_info->IsRS485 ); | |
443 | dbg(" RomSize %d", product_info->RomSize ); | |
444 | dbg(" RamSize %d", product_info->RamSize ); | |
445 | dbg(" CpuRev %x", product_info->CpuRev ); | |
446 | dbg(" BoardRev %x", product_info->BoardRev); | |
447 | dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, | |
448 | product_info->BootMinorVersion, | |
449 | le16_to_cpu(product_info->BootBuildNumber)); | |
450 | dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion, | |
451 | product_info->FirmwareMinorVersion, | |
452 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
453 | dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0], | |
454 | product_info->ManufactureDescDate[1], | |
455 | product_info->ManufactureDescDate[2]+1900); | |
456 | dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); | |
457 | dbg(" EpicVer %d", product_info->EpicVer); | |
458 | } | |
459 | ||
1da177e4 LT |
460 | static void get_product_info(struct edgeport_serial *edge_serial) |
461 | { | |
462 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
463 | ||
464 | memset (product_info, 0, sizeof(struct edgeport_product_info)); | |
465 | ||
466 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
467 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
468 | product_info->ProdInfoVer = 0; | |
469 | ||
470 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
471 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
472 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
473 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
474 | ||
475 | product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion; | |
476 | product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion; | |
477 | product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber; | |
478 | ||
479 | memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate)); | |
480 | ||
481 | // check if this is 2nd generation hardware | |
482 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) { | |
483 | product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion; | |
484 | product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion; | |
485 | product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber); | |
486 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
487 | } else { | |
488 | product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion; | |
489 | product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion; | |
490 | product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber); | |
491 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
492 | } | |
493 | ||
494 | // Determine Product type and set appropriate flags | |
495 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { | |
496 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: | |
497 | case ION_DEVICE_ID_EDGEPORT_4T: | |
498 | case ION_DEVICE_ID_EDGEPORT_4: | |
499 | case ION_DEVICE_ID_EDGEPORT_2: | |
500 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
501 | case ION_DEVICE_ID_EDGEPORT_8: | |
502 | case ION_DEVICE_ID_EDGEPORT_421: | |
503 | case ION_DEVICE_ID_EDGEPORT_21: | |
504 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
505 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
506 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
507 | product_info->IsRS232 = 1; | |
508 | break; | |
509 | ||
510 | case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485 | |
511 | product_info->IsRS422 = 1; | |
512 | product_info->IsRS485 = 1; | |
513 | break; | |
514 | ||
515 | case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422 | |
516 | case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422 | |
517 | product_info->IsRS422 = 1; | |
518 | break; | |
519 | } | |
520 | ||
6e8cf775 GKH |
521 | dump_product_info(product_info); |
522 | } | |
1da177e4 | 523 | |
6e8cf775 GKH |
524 | static int get_epic_descriptor(struct edgeport_serial *ep) |
525 | { | |
526 | int result; | |
527 | struct usb_serial *serial = ep->serial; | |
528 | struct edgeport_product_info *product_info = &ep->product_info; | |
529 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
530 | struct edge_compatibility_bits *bits; | |
531 | ||
532 | ep->is_epic = 0; | |
533 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
534 | USB_REQUEST_ION_GET_EPIC_DESC, | |
535 | 0xC0, 0x00, 0x00, | |
536 | &ep->epic_descriptor, | |
537 | sizeof(struct edge_compatibility_descriptor), | |
538 | 300); | |
539 | ||
540 | dbg("%s result = %d", __FUNCTION__, result); | |
541 | ||
542 | if (result > 0) { | |
543 | ep->is_epic = 1; | |
544 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
545 | ||
546 | product_info->NumPorts = epic->NumPorts; | |
547 | product_info->ProdInfoVer = 0; | |
548 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
549 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
550 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
551 | product_info->iDownloadFile = epic->iDownloadFile; | |
552 | product_info->EpicVer = epic->EpicVer; | |
553 | product_info->Epic = epic->Supports; | |
554 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
555 | dump_product_info(product_info); | |
556 | ||
557 | bits = &ep->epic_descriptor.Supports; | |
558 | dbg("**EPIC descriptor:"); | |
559 | dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
560 | dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE" ); | |
561 | dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE" ); | |
562 | dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE" ); | |
563 | dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE" ); | |
564 | dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE" ); | |
565 | dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE" ); | |
566 | dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE" ); | |
567 | dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE" ); | |
568 | dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE" ); | |
569 | dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE" ); | |
570 | dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE" ); | |
571 | dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE" ); | |
572 | } | |
573 | ||
574 | return result; | |
1da177e4 LT |
575 | } |
576 | ||
577 | ||
578 | /************************************************************************/ | |
579 | /************************************************************************/ | |
580 | /* U S B C A L L B A C K F U N C T I O N S */ | |
581 | /* U S B C A L L B A C K F U N C T I O N S */ | |
582 | /************************************************************************/ | |
583 | /************************************************************************/ | |
584 | ||
585 | /***************************************************************************** | |
586 | * edge_interrupt_callback | |
587 | * this is the callback function for when we have received data on the | |
588 | * interrupt endpoint. | |
589 | *****************************************************************************/ | |
7d12e780 | 590 | static void edge_interrupt_callback (struct urb *urb) |
1da177e4 LT |
591 | { |
592 | struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; | |
593 | struct edgeport_port *edge_port; | |
594 | struct usb_serial_port *port; | |
595 | unsigned char *data = urb->transfer_buffer; | |
596 | int length = urb->actual_length; | |
597 | int bytes_avail; | |
598 | int position; | |
599 | int txCredits; | |
600 | int portNumber; | |
601 | int result; | |
602 | ||
603 | dbg("%s", __FUNCTION__); | |
604 | ||
605 | switch (urb->status) { | |
606 | case 0: | |
607 | /* success */ | |
608 | break; | |
609 | case -ECONNRESET: | |
610 | case -ENOENT: | |
611 | case -ESHUTDOWN: | |
612 | /* this urb is terminated, clean up */ | |
613 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); | |
614 | return; | |
615 | default: | |
616 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); | |
617 | goto exit; | |
618 | } | |
619 | ||
620 | // process this interrupt-read even if there are no ports open | |
621 | if (length) { | |
622 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data); | |
623 | ||
624 | if (length > 1) { | |
625 | bytes_avail = data[0] | (data[1] << 8); | |
626 | if (bytes_avail) { | |
627 | spin_lock(&edge_serial->es_lock); | |
628 | edge_serial->rxBytesAvail += bytes_avail; | |
629 | dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); | |
630 | ||
631 | if (edge_serial->rxBytesAvail > 0 && | |
632 | !edge_serial->read_in_progress) { | |
633 | dbg("%s - posting a read", __FUNCTION__); | |
cb8eaa8b | 634 | edge_serial->read_in_progress = true; |
1da177e4 LT |
635 | |
636 | /* we have pending bytes on the bulk in pipe, send a request */ | |
637 | edge_serial->read_urb->dev = edge_serial->serial->dev; | |
638 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); | |
639 | if (result) { | |
640 | dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result); | |
cb8eaa8b | 641 | edge_serial->read_in_progress = false; |
1da177e4 LT |
642 | } |
643 | } | |
644 | spin_unlock(&edge_serial->es_lock); | |
645 | } | |
646 | } | |
647 | /* grab the txcredits for the ports if available */ | |
648 | position = 2; | |
649 | portNumber = 0; | |
650 | while ((position < length) && (portNumber < edge_serial->serial->num_ports)) { | |
651 | txCredits = data[position] | (data[position+1] << 8); | |
652 | if (txCredits) { | |
653 | port = edge_serial->serial->port[portNumber]; | |
654 | edge_port = usb_get_serial_port_data(port); | |
655 | if (edge_port->open) { | |
656 | spin_lock(&edge_port->ep_lock); | |
657 | edge_port->txCredits += txCredits; | |
658 | spin_unlock(&edge_port->ep_lock); | |
659 | dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits); | |
660 | ||
661 | /* tell the tty driver that something has changed */ | |
662 | if (edge_port->port->tty) | |
663 | tty_wakeup(edge_port->port->tty); | |
664 | ||
665 | // Since we have more credit, check if more data can be sent | |
666 | send_more_port_data(edge_serial, edge_port); | |
667 | } | |
668 | } | |
669 | position += 2; | |
670 | ++portNumber; | |
671 | } | |
672 | } | |
673 | ||
674 | exit: | |
675 | result = usb_submit_urb (urb, GFP_ATOMIC); | |
676 | if (result) { | |
677 | dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result); | |
678 | } | |
679 | } | |
680 | ||
681 | ||
682 | /***************************************************************************** | |
683 | * edge_bulk_in_callback | |
684 | * this is the callback function for when we have received data on the | |
685 | * bulk in endpoint. | |
686 | *****************************************************************************/ | |
7d12e780 | 687 | static void edge_bulk_in_callback (struct urb *urb) |
1da177e4 LT |
688 | { |
689 | struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; | |
690 | unsigned char *data = urb->transfer_buffer; | |
691 | int status; | |
692 | __u16 raw_data_length; | |
693 | ||
694 | dbg("%s", __FUNCTION__); | |
695 | ||
696 | if (urb->status) { | |
697 | dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); | |
cb8eaa8b | 698 | edge_serial->read_in_progress = false; |
1da177e4 LT |
699 | return; |
700 | } | |
701 | ||
702 | if (urb->actual_length == 0) { | |
703 | dbg("%s - read bulk callback with no data", __FUNCTION__); | |
cb8eaa8b | 704 | edge_serial->read_in_progress = false; |
1da177e4 LT |
705 | return; |
706 | } | |
707 | ||
708 | raw_data_length = urb->actual_length; | |
709 | ||
710 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data); | |
711 | ||
712 | spin_lock(&edge_serial->es_lock); | |
713 | ||
714 | /* decrement our rxBytes available by the number that we just got */ | |
715 | edge_serial->rxBytesAvail -= raw_data_length; | |
716 | ||
717 | dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail); | |
718 | ||
719 | process_rcvd_data (edge_serial, data, urb->actual_length); | |
720 | ||
721 | /* check to see if there's any more data for us to read */ | |
722 | if (edge_serial->rxBytesAvail > 0) { | |
723 | dbg("%s - posting a read", __FUNCTION__); | |
724 | edge_serial->read_urb->dev = edge_serial->serial->dev; | |
725 | status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); | |
726 | if (status) { | |
727 | dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status); | |
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 | |
740 | * this is the callback function for when we have finished sending serial data | |
741 | * on the bulk out endpoint. | |
742 | *****************************************************************************/ | |
7d12e780 | 743 | static void edge_bulk_out_data_callback (struct urb *urb) |
1da177e4 LT |
744 | { |
745 | struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; | |
746 | struct tty_struct *tty; | |
747 | ||
748 | dbg("%s", __FUNCTION__); | |
749 | ||
750 | if (urb->status) { | |
751 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); | |
752 | } | |
753 | ||
754 | tty = edge_port->port->tty; | |
755 | ||
756 | if (tty && edge_port->open) { | |
757 | /* let the tty driver wakeup if it has a special write_wakeup function */ | |
758 | tty_wakeup(tty); | |
759 | } | |
760 | ||
761 | // Release the Write URB | |
cb8eaa8b | 762 | edge_port->write_in_progress = false; |
1da177e4 LT |
763 | |
764 | // Check if more data needs to be sent | |
765 | send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port); | |
766 | } | |
767 | ||
768 | ||
769 | /***************************************************************************** | |
770 | * BulkOutCmdCallback | |
771 | * this is the callback function for when we have finished sending a command | |
772 | * on the bulk out endpoint. | |
773 | *****************************************************************************/ | |
7d12e780 | 774 | static void edge_bulk_out_cmd_callback (struct urb *urb) |
1da177e4 LT |
775 | { |
776 | struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; | |
777 | struct tty_struct *tty; | |
778 | int status = urb->status; | |
779 | ||
780 | dbg("%s", __FUNCTION__); | |
781 | ||
96c706ed ON |
782 | atomic_dec(&CmdUrbs); |
783 | dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
784 | |
785 | ||
786 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 787 | kfree(urb->transfer_buffer); |
1da177e4 LT |
788 | |
789 | /* Free the command urb */ | |
790 | usb_free_urb (urb); | |
791 | ||
792 | if (status) { | |
793 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status); | |
794 | return; | |
795 | } | |
796 | ||
797 | /* Get pointer to tty */ | |
798 | tty = edge_port->port->tty; | |
799 | ||
800 | /* tell the tty driver that something has changed */ | |
801 | if (tty && edge_port->open) | |
802 | tty_wakeup(tty); | |
803 | ||
804 | /* we have completed the command */ | |
cb8eaa8b | 805 | edge_port->commandPending = false; |
1da177e4 LT |
806 | wake_up(&edge_port->wait_command); |
807 | } | |
808 | ||
809 | ||
810 | /***************************************************************************** | |
811 | * Driver tty interface functions | |
812 | *****************************************************************************/ | |
813 | ||
814 | /***************************************************************************** | |
815 | * SerialOpen | |
816 | * this function is called by the tty driver when a port is opened | |
817 | * If successful, we return 0 | |
818 | * Otherwise we return a negative error number. | |
819 | *****************************************************************************/ | |
820 | static int edge_open (struct usb_serial_port *port, struct file * filp) | |
821 | { | |
822 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
823 | struct usb_serial *serial; | |
824 | struct edgeport_serial *edge_serial; | |
825 | int response; | |
826 | ||
827 | dbg("%s - port %d", __FUNCTION__, port->number); | |
828 | ||
829 | if (edge_port == NULL) | |
830 | return -ENODEV; | |
831 | ||
832 | if (port->tty) | |
833 | port->tty->low_latency = low_latency; | |
834 | ||
835 | /* see if we've set up our endpoint info yet (can't set it up in edge_startup | |
836 | as the structures were not set up at that time.) */ | |
837 | serial = port->serial; | |
838 | edge_serial = usb_get_serial_data(serial); | |
839 | if (edge_serial == NULL) { | |
840 | return -ENODEV; | |
841 | } | |
842 | if (edge_serial->interrupt_in_buffer == NULL) { | |
843 | struct usb_serial_port *port0 = serial->port[0]; | |
844 | ||
845 | /* not set up yet, so do it now */ | |
846 | edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer; | |
847 | edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress; | |
848 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; | |
849 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
850 | edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress; | |
851 | edge_serial->read_urb = port0->read_urb; | |
852 | edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress; | |
853 | ||
854 | /* set up our interrupt urb */ | |
855 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
856 | serial->dev, | |
857 | usb_rcvintpipe(serial->dev, | |
858 | port0->interrupt_in_endpointAddress), | |
859 | port0->interrupt_in_buffer, | |
860 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
861 | edge_interrupt_callback, edge_serial, | |
862 | edge_serial->interrupt_read_urb->interval); | |
863 | ||
864 | /* set up our bulk in urb */ | |
865 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
866 | usb_rcvbulkpipe(serial->dev, | |
867 | port0->bulk_in_endpointAddress), | |
868 | port0->bulk_in_buffer, | |
869 | edge_serial->read_urb->transfer_buffer_length, | |
870 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 871 | edge_serial->read_in_progress = false; |
1da177e4 LT |
872 | |
873 | /* start interrupt read for this edgeport | |
874 | * this interrupt will continue as long as the edgeport is connected */ | |
875 | response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL); | |
876 | if (response) { | |
877 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response); | |
878 | } | |
879 | } | |
880 | ||
881 | /* initialize our wait queues */ | |
882 | init_waitqueue_head(&edge_port->wait_open); | |
883 | init_waitqueue_head(&edge_port->wait_chase); | |
884 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
885 | init_waitqueue_head(&edge_port->wait_command); | |
886 | ||
887 | /* initialize our icount structure */ | |
888 | memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount)); | |
889 | ||
890 | /* initialize our port settings */ | |
891 | edge_port->txCredits = 0; /* Can't send any data yet */ | |
892 | edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */ | |
cb8eaa8b | 893 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
894 | |
895 | /* send a open port command */ | |
cb8eaa8b RK |
896 | edge_port->openPending = true; |
897 | edge_port->open = false; | |
1da177e4 LT |
898 | response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0); |
899 | ||
900 | if (response < 0) { | |
901 | dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__); | |
cb8eaa8b | 902 | edge_port->openPending = false; |
1da177e4 LT |
903 | return -ENODEV; |
904 | } | |
905 | ||
906 | /* now wait for the port to be completely opened */ | |
cb8eaa8b | 907 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, OPEN_TIMEOUT); |
1da177e4 | 908 | |
cb8eaa8b | 909 | if (!edge_port->open) { |
1da177e4 LT |
910 | /* open timed out */ |
911 | dbg("%s - open timedout", __FUNCTION__); | |
cb8eaa8b | 912 | edge_port->openPending = false; |
1da177e4 LT |
913 | return -ENODEV; |
914 | } | |
915 | ||
916 | /* create the txfifo */ | |
917 | edge_port->txfifo.head = 0; | |
918 | edge_port->txfifo.tail = 0; | |
919 | edge_port->txfifo.count = 0; | |
920 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
921 | edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL); | |
922 | ||
923 | if (!edge_port->txfifo.fifo) { | |
924 | dbg("%s - no memory", __FUNCTION__); | |
925 | edge_close (port, filp); | |
926 | return -ENOMEM; | |
927 | } | |
928 | ||
929 | /* Allocate a URB for the write */ | |
930 | edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL); | |
cb8eaa8b | 931 | edge_port->write_in_progress = false; |
1da177e4 LT |
932 | |
933 | if (!edge_port->write_urb) { | |
934 | dbg("%s - no memory", __FUNCTION__); | |
935 | edge_close (port, filp); | |
936 | return -ENOMEM; | |
937 | } | |
938 | ||
939 | dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits); | |
940 | ||
941 | dbg("%s exited", __FUNCTION__); | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | ||
947 | /************************************************************************ | |
948 | * | |
949 | * block_until_chase_response | |
950 | * | |
951 | * This function will block the close until one of the following: | |
952 | * 1. Response to our Chase comes from Edgeport | |
953 | * 2. A timout of 10 seconds without activity has expired | |
954 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) | |
955 | * | |
956 | ************************************************************************/ | |
957 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
958 | { | |
959 | DEFINE_WAIT(wait); | |
960 | __u16 lastCredits; | |
961 | int timeout = 1*HZ; | |
962 | int loop = 10; | |
963 | ||
964 | while (1) { | |
965 | // Save Last credits | |
966 | lastCredits = edge_port->txCredits; | |
967 | ||
968 | // Did we get our Chase response | |
cb8eaa8b | 969 | if (!edge_port->chaseResponsePending) { |
1da177e4 LT |
970 | dbg("%s - Got Chase Response", __FUNCTION__); |
971 | ||
972 | // did we get all of our credit back? | |
973 | if (edge_port->txCredits == edge_port->maxTxCredits ) { | |
974 | dbg("%s - Got all credits", __FUNCTION__); | |
975 | return; | |
976 | } | |
977 | } | |
978 | ||
979 | // Block the thread for a while | |
980 | prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); | |
981 | schedule_timeout(timeout); | |
982 | finish_wait(&edge_port->wait_chase, &wait); | |
983 | ||
984 | if (lastCredits == edge_port->txCredits) { | |
985 | // No activity.. count down. | |
986 | loop--; | |
987 | if (loop == 0) { | |
cb8eaa8b | 988 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
989 | dbg("%s - Chase TIMEOUT", __FUNCTION__); |
990 | return; | |
991 | } | |
992 | } else { | |
993 | // Reset timout value back to 10 seconds | |
994 | dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits); | |
995 | loop = 10; | |
996 | } | |
997 | } | |
998 | } | |
999 | ||
1000 | ||
1001 | /************************************************************************ | |
1002 | * | |
1003 | * block_until_tx_empty | |
1004 | * | |
1005 | * This function will block the close until one of the following: | |
1006 | * 1. TX count are 0 | |
1007 | * 2. The edgeport has stopped | |
1008 | * 3. A timout of 3 seconds without activity has expired | |
1009 | * | |
1010 | ************************************************************************/ | |
1011 | static void block_until_tx_empty (struct edgeport_port *edge_port) | |
1012 | { | |
1013 | DEFINE_WAIT(wait); | |
1014 | struct TxFifo *fifo = &edge_port->txfifo; | |
1015 | __u32 lastCount; | |
1016 | int timeout = HZ/10; | |
1017 | int loop = 30; | |
1018 | ||
1019 | while (1) { | |
1020 | // Save Last count | |
1021 | lastCount = fifo->count; | |
1022 | ||
1023 | // Is the Edgeport Buffer empty? | |
1024 | if (lastCount == 0) { | |
1025 | dbg("%s - TX Buffer Empty", __FUNCTION__); | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | // Block the thread for a while | |
1030 | prepare_to_wait (&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); | |
1031 | schedule_timeout(timeout); | |
1032 | finish_wait(&edge_port->wait_chase, &wait); | |
1033 | ||
1034 | dbg("%s wait", __FUNCTION__); | |
1035 | ||
1036 | if (lastCount == fifo->count) { | |
1037 | // No activity.. count down. | |
1038 | loop--; | |
1039 | if (loop == 0) { | |
1040 | dbg("%s - TIMEOUT", __FUNCTION__); | |
1041 | return; | |
1042 | } | |
1043 | } else { | |
1044 | // Reset timout value back to seconds | |
1045 | loop = 30; | |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | ||
1051 | /***************************************************************************** | |
1052 | * edge_close | |
1053 | * this function is called by the tty driver when a port is closed | |
1054 | *****************************************************************************/ | |
1055 | static void edge_close (struct usb_serial_port *port, struct file * filp) | |
1056 | { | |
1057 | struct edgeport_serial *edge_serial; | |
1058 | struct edgeport_port *edge_port; | |
1059 | int status; | |
1060 | ||
1061 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1062 | ||
1063 | edge_serial = usb_get_serial_data(port->serial); | |
1064 | edge_port = usb_get_serial_port_data(port); | |
1065 | if ((edge_serial == NULL) || (edge_port == NULL)) | |
1066 | return; | |
1067 | ||
1068 | // block until tx is empty | |
1069 | block_until_tx_empty(edge_port); | |
1070 | ||
cb8eaa8b | 1071 | edge_port->closePending = true; |
1da177e4 | 1072 | |
6e8cf775 GKH |
1073 | if ((!edge_serial->is_epic) || |
1074 | ((edge_serial->is_epic) && | |
1075 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1076 | /* flush and chase */ | |
cb8eaa8b | 1077 | edge_port->chaseResponsePending = true; |
6e8cf775 GKH |
1078 | |
1079 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__); | |
1080 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); | |
1081 | if (status == 0) { | |
1082 | // block until chase finished | |
1083 | block_until_chase_response(edge_port); | |
1084 | } else { | |
cb8eaa8b | 1085 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1086 | } |
1da177e4 LT |
1087 | } |
1088 | ||
6e8cf775 GKH |
1089 | if ((!edge_serial->is_epic) || |
1090 | ((edge_serial->is_epic) && | |
1091 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1092 | /* close the port */ | |
1093 | dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__); | |
1094 | send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0); | |
1095 | } | |
1da177e4 | 1096 | |
cb8eaa8b RK |
1097 | //port->close = true; |
1098 | edge_port->closePending = false; | |
1099 | edge_port->open = false; | |
1100 | edge_port->openPending = false; | |
1da177e4 | 1101 | |
9a25f44f | 1102 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1103 | |
1104 | if (edge_port->write_urb) { | |
1105 | /* if this urb had a transfer buffer already (old transfer) free it */ | |
1bc3c9e1 JJ |
1106 | kfree(edge_port->write_urb->transfer_buffer); |
1107 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1108 | edge_port->write_urb = NULL; |
1109 | } | |
1bc3c9e1 JJ |
1110 | kfree(edge_port->txfifo.fifo); |
1111 | edge_port->txfifo.fifo = NULL; | |
1da177e4 LT |
1112 | |
1113 | dbg("%s exited", __FUNCTION__); | |
1114 | } | |
1115 | ||
1116 | /***************************************************************************** | |
1117 | * SerialWrite | |
1118 | * this function is called by the tty driver when data should be written to | |
1119 | * the port. | |
1120 | * If successful, we return the number of bytes written, otherwise we return | |
1121 | * a negative error number. | |
1122 | *****************************************************************************/ | |
1123 | static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count) | |
1124 | { | |
1125 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1126 | struct TxFifo *fifo; | |
1127 | int copySize; | |
1128 | int bytesleft; | |
1129 | int firsthalf; | |
1130 | int secondhalf; | |
1131 | unsigned long flags; | |
1132 | ||
1133 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1134 | ||
1135 | if (edge_port == NULL) | |
1136 | return -ENODEV; | |
1137 | ||
1138 | // get a pointer to the Tx fifo | |
1139 | fifo = &edge_port->txfifo; | |
1140 | ||
1141 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1142 | ||
1143 | // calculate number of bytes to put in fifo | |
1144 | copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count)); | |
1145 | ||
1146 | dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__, | |
1147 | port->number, count, edge_port->txCredits - fifo->count, copySize); | |
1148 | ||
1149 | /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */ | |
1150 | if (copySize == 0) { | |
1151 | dbg("%s - copySize = Zero", __FUNCTION__); | |
1152 | goto finish_write; | |
1153 | } | |
1154 | ||
1155 | // queue the data | |
1156 | // since we can never overflow the buffer we do not have to check for full condition | |
1157 | ||
1158 | // the copy is done is two parts -- first fill to the end of the buffer | |
1159 | // then copy the reset from the start of the buffer | |
1160 | ||
1161 | bytesleft = fifo->size - fifo->head; | |
1162 | firsthalf = min (bytesleft, copySize); | |
1163 | dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft); | |
1164 | ||
1165 | /* now copy our data */ | |
1166 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
1167 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]); | |
1168 | ||
1169 | // update the index and size | |
1170 | fifo->head += firsthalf; | |
1171 | fifo->count += firsthalf; | |
1172 | ||
1173 | // wrap the index | |
1174 | if (fifo->head == fifo->size) { | |
1175 | fifo->head = 0; | |
1176 | } | |
1177 | ||
1178 | secondhalf = copySize-firsthalf; | |
1179 | ||
1180 | if (secondhalf) { | |
1181 | dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf); | |
1182 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); | |
1183 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]); | |
1184 | // update the index and size | |
1185 | fifo->count += secondhalf; | |
1186 | fifo->head += secondhalf; | |
1187 | // No need to check for wrap since we can not get to end of fifo in this part | |
1188 | } | |
1189 | ||
1190 | finish_write: | |
1191 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1192 | ||
1193 | send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port); | |
1194 | ||
1195 | dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count); | |
1196 | ||
1197 | return copySize; | |
1198 | } | |
1199 | ||
1200 | ||
1201 | /************************************************************************ | |
1202 | * | |
1203 | * send_more_port_data() | |
1204 | * | |
1205 | * This routine attempts to write additional UART transmit data | |
1206 | * to a port over the USB bulk pipe. It is called (1) when new | |
1207 | * data has been written to a port's TxBuffer from higher layers | |
1208 | * (2) when the peripheral sends us additional TxCredits indicating | |
1209 | * that it can accept more Tx data for a given port; and (3) when | |
1210 | * a bulk write completes successfully and we want to see if we | |
1211 | * can transmit more. | |
1212 | * | |
1213 | ************************************************************************/ | |
1214 | static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port) | |
1215 | { | |
1216 | struct TxFifo *fifo = &edge_port->txfifo; | |
1217 | struct urb *urb; | |
1218 | unsigned char *buffer; | |
1219 | int status; | |
1220 | int count; | |
1221 | int bytesleft; | |
1222 | int firsthalf; | |
1223 | int secondhalf; | |
1224 | unsigned long flags; | |
1225 | ||
1226 | dbg("%s(%d)", __FUNCTION__, edge_port->port->number); | |
1227 | ||
1228 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1229 | ||
1230 | if (edge_port->write_in_progress || | |
1231 | !edge_port->open || | |
1232 | (fifo->count == 0)) { | |
1233 | dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress); | |
1234 | goto exit_send; | |
1235 | } | |
1236 | ||
1237 | // since the amount of data in the fifo will always fit into the | |
1238 | // edgeport buffer we do not need to check the write length | |
1239 | ||
1240 | // Do we have enough credits for this port to make it worthwhile | |
1241 | // to bother queueing a write. If it's too small, say a few bytes, | |
1242 | // it's better to wait for more credits so we can do a larger | |
1243 | // write. | |
1244 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
1245 | dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits ); | |
1246 | goto exit_send; | |
1247 | } | |
1248 | ||
1249 | // lock this write | |
cb8eaa8b | 1250 | edge_port->write_in_progress = true; |
1da177e4 LT |
1251 | |
1252 | // get a pointer to the write_urb | |
1253 | urb = edge_port->write_urb; | |
1254 | ||
1bc3c9e1 JJ |
1255 | /* make sure transfer buffer is freed */ |
1256 | kfree(urb->transfer_buffer); | |
1257 | urb->transfer_buffer = NULL; | |
1da177e4 LT |
1258 | |
1259 | /* build the data header for the buffer and port that we are about to send out */ | |
1260 | count = fifo->count; | |
1261 | buffer = kmalloc (count+2, GFP_ATOMIC); | |
1262 | if (buffer == NULL) { | |
1263 | dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__); | |
cb8eaa8b | 1264 | edge_port->write_in_progress = false; |
1da177e4 LT |
1265 | goto exit_send; |
1266 | } | |
1267 | buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count); | |
1268 | buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count); | |
1269 | ||
1270 | /* now copy our data */ | |
1271 | bytesleft = fifo->size - fifo->tail; | |
1272 | firsthalf = min (bytesleft, count); | |
1273 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); | |
1274 | fifo->tail += firsthalf; | |
1275 | fifo->count -= firsthalf; | |
1276 | if (fifo->tail == fifo->size) { | |
1277 | fifo->tail = 0; | |
1278 | } | |
1279 | ||
1280 | secondhalf = count-firsthalf; | |
1281 | if (secondhalf) { | |
1282 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf); | |
1283 | fifo->tail += secondhalf; | |
1284 | fifo->count -= secondhalf; | |
1285 | } | |
1286 | ||
1287 | if (count) | |
1288 | usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]); | |
1289 | ||
1290 | /* fill up the urb with all of our data and submit it */ | |
1291 | usb_fill_bulk_urb (urb, edge_serial->serial->dev, | |
1292 | usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), | |
1293 | buffer, count+2, edge_bulk_out_data_callback, edge_port); | |
1294 | ||
1295 | /* decrement the number of credits we have by the number we just sent */ | |
1296 | edge_port->txCredits -= count; | |
1297 | edge_port->icount.tx += count; | |
1298 | ||
1299 | urb->dev = edge_serial->serial->dev; | |
1300 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1301 | if (status) { | |
1302 | /* something went wrong */ | |
1303 | dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status); | |
cb8eaa8b | 1304 | edge_port->write_in_progress = false; |
1da177e4 LT |
1305 | |
1306 | /* revert the credits as something bad happened. */ | |
1307 | edge_port->txCredits += count; | |
1308 | edge_port->icount.tx -= count; | |
1309 | } | |
1310 | dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count); | |
1311 | ||
1312 | exit_send: | |
1313 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1314 | } | |
1315 | ||
1316 | ||
1317 | /***************************************************************************** | |
1318 | * edge_write_room | |
1319 | * this function is called by the tty driver when it wants to know how many | |
1320 | * bytes of data we can accept for a specific port. | |
1321 | * If successful, we return the amount of room that we have for this port | |
1322 | * (the txCredits), | |
1323 | * Otherwise we return a negative error number. | |
1324 | *****************************************************************************/ | |
1325 | static int edge_write_room (struct usb_serial_port *port) | |
1326 | { | |
1327 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1328 | int room; | |
1329 | unsigned long flags; | |
1330 | ||
1331 | dbg("%s", __FUNCTION__); | |
1332 | ||
1333 | if (edge_port == NULL) | |
1334 | return -ENODEV; | |
cb8eaa8b | 1335 | if (edge_port->closePending) |
1da177e4 LT |
1336 | return -ENODEV; |
1337 | ||
1338 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1339 | ||
1340 | if (!edge_port->open) { | |
1341 | dbg("%s - port not opened", __FUNCTION__); | |
1342 | return -EINVAL; | |
1343 | } | |
1344 | ||
1345 | // total of both buffers is still txCredit | |
1346 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1347 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1348 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1349 | ||
1350 | dbg("%s - returns %d", __FUNCTION__, room); | |
1351 | return room; | |
1352 | } | |
1353 | ||
1354 | ||
1355 | /***************************************************************************** | |
1356 | * edge_chars_in_buffer | |
1357 | * this function is called by the tty driver when it wants to know how many | |
1358 | * bytes of data we currently have outstanding in the port (data that has | |
1359 | * been written, but hasn't made it out the port yet) | |
1360 | * If successful, we return the number of bytes left to be written in the | |
1361 | * system, | |
1362 | * Otherwise we return a negative error number. | |
1363 | *****************************************************************************/ | |
1364 | static int edge_chars_in_buffer (struct usb_serial_port *port) | |
1365 | { | |
1366 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1367 | int num_chars; | |
1368 | unsigned long flags; | |
1369 | ||
1370 | dbg("%s", __FUNCTION__); | |
1371 | ||
1372 | if (edge_port == NULL) | |
1373 | return -ENODEV; | |
cb8eaa8b | 1374 | if (edge_port->closePending) |
1da177e4 LT |
1375 | return -ENODEV; |
1376 | ||
1377 | if (!edge_port->open) { | |
1378 | dbg("%s - port not opened", __FUNCTION__); | |
1379 | return -EINVAL; | |
1380 | } | |
1381 | ||
1382 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1383 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count; | |
1384 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1385 | if (num_chars) { | |
1386 | dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars); | |
1387 | } | |
1388 | ||
1389 | return num_chars; | |
1390 | } | |
1391 | ||
1392 | ||
1393 | /***************************************************************************** | |
1394 | * SerialThrottle | |
1395 | * this function is called by the tty driver when it wants to stop the data | |
1396 | * being read from the port. | |
1397 | *****************************************************************************/ | |
1398 | static void edge_throttle (struct usb_serial_port *port) | |
1399 | { | |
1400 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1401 | struct tty_struct *tty; | |
1402 | int status; | |
1403 | ||
1404 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1405 | ||
1406 | if (edge_port == NULL) | |
1407 | return; | |
1408 | ||
1409 | if (!edge_port->open) { | |
1410 | dbg("%s - port not opened", __FUNCTION__); | |
1411 | return; | |
1412 | } | |
1413 | ||
1414 | tty = port->tty; | |
1415 | if (!tty) { | |
1416 | dbg ("%s - no tty available", __FUNCTION__); | |
1417 | return; | |
1418 | } | |
1419 | ||
1420 | /* if we are implementing XON/XOFF, send the stop character */ | |
1421 | if (I_IXOFF(tty)) { | |
1422 | unsigned char stop_char = STOP_CHAR(tty); | |
1423 | status = edge_write (port, &stop_char, 1); | |
1424 | if (status <= 0) { | |
1425 | return; | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | /* if we are implementing RTS/CTS, toggle that line */ | |
1430 | if (tty->termios->c_cflag & CRTSCTS) { | |
1431 | edge_port->shadowMCR &= ~MCR_RTS; | |
1432 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1433 | if (status != 0) { | |
1434 | return; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | return; | |
1439 | } | |
1440 | ||
1441 | ||
1442 | /***************************************************************************** | |
1443 | * edge_unthrottle | |
1444 | * this function is called by the tty driver when it wants to resume the data | |
1445 | * being read from the port (called after SerialThrottle is called) | |
1446 | *****************************************************************************/ | |
1447 | static void edge_unthrottle (struct usb_serial_port *port) | |
1448 | { | |
1449 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1450 | struct tty_struct *tty; | |
1451 | int status; | |
1452 | ||
1453 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1454 | ||
1455 | if (edge_port == NULL) | |
1456 | return; | |
1457 | ||
1458 | if (!edge_port->open) { | |
1459 | dbg("%s - port not opened", __FUNCTION__); | |
1460 | return; | |
1461 | } | |
1462 | ||
1463 | tty = port->tty; | |
1464 | if (!tty) { | |
1465 | dbg ("%s - no tty available", __FUNCTION__); | |
1466 | return; | |
1467 | } | |
1468 | ||
1469 | /* if we are implementing XON/XOFF, send the start character */ | |
1470 | if (I_IXOFF(tty)) { | |
1471 | unsigned char start_char = START_CHAR(tty); | |
1472 | status = edge_write (port, &start_char, 1); | |
1473 | if (status <= 0) { | |
1474 | return; | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* if we are implementing RTS/CTS, toggle that line */ | |
1479 | if (tty->termios->c_cflag & CRTSCTS) { | |
1480 | edge_port->shadowMCR |= MCR_RTS; | |
1481 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1482 | if (status != 0) { | |
1483 | return; | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | return; | |
1488 | } | |
1489 | ||
1490 | ||
1491 | /***************************************************************************** | |
1492 | * SerialSetTermios | |
1493 | * this function is called by the tty driver when it wants to change the termios structure | |
1494 | *****************************************************************************/ | |
606d099c | 1495 | static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
1496 | { |
1497 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1498 | struct tty_struct *tty = port->tty; | |
1499 | unsigned int cflag; | |
1500 | ||
1501 | if (!port->tty || !port->tty->termios) { | |
1502 | dbg ("%s - no tty or termios", __FUNCTION__); | |
1503 | return; | |
1504 | } | |
1505 | ||
1506 | cflag = tty->termios->c_cflag; | |
1507 | /* check that they really want us to change something */ | |
1508 | if (old_termios) { | |
1509 | if (cflag == old_termios->c_cflag && | |
1510 | tty->termios->c_iflag == old_termios->c_iflag) { | |
1511 | dbg("%s - nothing to change", __FUNCTION__); | |
1512 | return; | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | dbg("%s - clfag %08x iflag %08x", __FUNCTION__, | |
1517 | tty->termios->c_cflag, tty->termios->c_iflag); | |
1518 | if (old_termios) { | |
1519 | dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__, | |
1520 | old_termios->c_cflag, old_termios->c_iflag); | |
1521 | } | |
1522 | ||
1523 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1524 | ||
1525 | if (edge_port == NULL) | |
1526 | return; | |
1527 | ||
1528 | if (!edge_port->open) { | |
1529 | dbg("%s - port not opened", __FUNCTION__); | |
1530 | return; | |
1531 | } | |
1532 | ||
1533 | /* change the port settings to the new ones specified */ | |
1534 | change_port_settings (edge_port, old_termios); | |
1535 | ||
1536 | return; | |
1537 | } | |
1538 | ||
1539 | ||
1540 | /***************************************************************************** | |
1541 | * get_lsr_info - get line status register info | |
1542 | * | |
1543 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1544 | * is emptied. On bus types like RS485, the transmitter must | |
1545 | * release the bus after transmitting. This must be done when | |
1546 | * the transmit shift register is empty, not be done when the | |
1547 | * transmit holding register is empty. This functionality | |
1548 | * allows an RS485 driver to be written in user space. | |
1549 | *****************************************************************************/ | |
1550 | static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value) | |
1551 | { | |
1552 | unsigned int result = 0; | |
1553 | unsigned long flags; | |
1554 | ||
1555 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1556 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1557 | edge_port->txfifo.count == 0) { | |
1558 | dbg("%s -- Empty", __FUNCTION__); | |
1559 | result = TIOCSER_TEMT; | |
1560 | } | |
1561 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1562 | ||
1563 | if (copy_to_user(value, &result, sizeof(int))) | |
1564 | return -EFAULT; | |
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value) | |
1569 | { | |
1570 | unsigned int result = 0; | |
1571 | struct tty_struct *tty = edge_port->port->tty; | |
1572 | ||
1573 | if (!tty) | |
1574 | return -ENOIOCTLCMD; | |
1575 | ||
1576 | result = tty->read_cnt; | |
1577 | ||
1578 | dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result); | |
1579 | if (copy_to_user(value, &result, sizeof(int))) | |
1580 | return -EFAULT; | |
1581 | //return 0; | |
1582 | return -ENOIOCTLCMD; | |
1583 | } | |
1584 | ||
1585 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) | |
1586 | { | |
1587 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1588 | unsigned int mcr; | |
1589 | ||
1590 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1591 | ||
1592 | mcr = edge_port->shadowMCR; | |
1593 | if (set & TIOCM_RTS) | |
1594 | mcr |= MCR_RTS; | |
1595 | if (set & TIOCM_DTR) | |
1596 | mcr |= MCR_DTR; | |
1597 | if (set & TIOCM_LOOP) | |
1598 | mcr |= MCR_LOOPBACK; | |
1599 | ||
1600 | if (clear & TIOCM_RTS) | |
1601 | mcr &= ~MCR_RTS; | |
1602 | if (clear & TIOCM_DTR) | |
1603 | mcr &= ~MCR_DTR; | |
1604 | if (clear & TIOCM_LOOP) | |
1605 | mcr &= ~MCR_LOOPBACK; | |
1606 | ||
1607 | edge_port->shadowMCR = mcr; | |
1608 | ||
1609 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1610 | ||
1611 | return 0; | |
1612 | } | |
1613 | ||
1614 | static int edge_tiocmget(struct usb_serial_port *port, struct file *file) | |
1615 | { | |
1616 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1617 | unsigned int result = 0; | |
1618 | unsigned int msr; | |
1619 | unsigned int mcr; | |
1620 | ||
1621 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1622 | ||
1623 | msr = edge_port->shadowMSR; | |
1624 | mcr = edge_port->shadowMCR; | |
1625 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1626 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1627 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1628 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1629 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1630 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1631 | ||
1632 | ||
1633 | dbg("%s -- %x", __FUNCTION__, result); | |
1634 | ||
1635 | return result; | |
1636 | } | |
1637 | ||
1638 | static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) | |
1639 | { | |
1640 | struct serial_struct tmp; | |
1641 | ||
1642 | if (!retinfo) | |
1643 | return -EFAULT; | |
1644 | ||
1645 | memset(&tmp, 0, sizeof(tmp)); | |
1646 | ||
1647 | tmp.type = PORT_16550A; | |
1648 | tmp.line = edge_port->port->serial->minor; | |
1649 | tmp.port = edge_port->port->number; | |
1650 | tmp.irq = 0; | |
1651 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1652 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1653 | tmp.baud_base = 9600; | |
1654 | tmp.close_delay = 5*HZ; | |
1655 | tmp.closing_wait = 30*HZ; | |
1656 | // tmp.custom_divisor = state->custom_divisor; | |
1657 | // tmp.hub6 = state->hub6; | |
1658 | // tmp.io_type = state->io_type; | |
1659 | ||
1660 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1661 | return -EFAULT; | |
1662 | return 0; | |
1663 | } | |
1664 | ||
1665 | ||
1666 | ||
1667 | /***************************************************************************** | |
1668 | * SerialIoctl | |
1669 | * this function handles any ioctl calls to the driver | |
1670 | *****************************************************************************/ | |
1671 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) | |
1672 | { | |
1673 | DEFINE_WAIT(wait); | |
1674 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1675 | struct async_icount cnow; | |
1676 | struct async_icount cprev; | |
1677 | struct serial_icounter_struct icount; | |
1678 | ||
1679 | dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd); | |
1680 | ||
1681 | switch (cmd) { | |
1682 | // return number of bytes available | |
1683 | case TIOCINQ: | |
1684 | dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number); | |
1685 | return get_number_bytes_avail(edge_port, (unsigned int __user *) arg); | |
1686 | break; | |
1687 | ||
1688 | case TIOCSERGETLSR: | |
1689 | dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number); | |
1690 | return get_lsr_info(edge_port, (unsigned int __user *) arg); | |
1691 | return 0; | |
1692 | ||
1693 | case TIOCGSERIAL: | |
1694 | dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number); | |
1695 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); | |
1696 | ||
1697 | case TIOCSSERIAL: | |
1698 | dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number); | |
1699 | break; | |
1700 | ||
1701 | case TIOCMIWAIT: | |
1702 | dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); | |
1703 | cprev = edge_port->icount; | |
1704 | while (1) { | |
1705 | prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE); | |
1706 | schedule(); | |
1707 | finish_wait(&edge_port->delta_msr_wait, &wait); | |
1708 | /* see if a signal did it */ | |
1709 | if (signal_pending(current)) | |
1710 | return -ERESTARTSYS; | |
1711 | cnow = edge_port->icount; | |
1712 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1713 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1714 | return -EIO; /* no change => error */ | |
1715 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1716 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1717 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1718 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
1719 | return 0; | |
1720 | } | |
1721 | cprev = cnow; | |
1722 | } | |
1723 | /* NOTREACHED */ | |
1724 | break; | |
1725 | ||
1726 | case TIOCGICOUNT: | |
1727 | cnow = edge_port->icount; | |
1728 | memset(&icount, 0, sizeof(icount)); | |
1729 | icount.cts = cnow.cts; | |
1730 | icount.dsr = cnow.dsr; | |
1731 | icount.rng = cnow.rng; | |
1732 | icount.dcd = cnow.dcd; | |
1733 | icount.rx = cnow.rx; | |
1734 | icount.tx = cnow.tx; | |
1735 | icount.frame = cnow.frame; | |
1736 | icount.overrun = cnow.overrun; | |
1737 | icount.parity = cnow.parity; | |
1738 | icount.brk = cnow.brk; | |
1739 | icount.buf_overrun = cnow.buf_overrun; | |
1740 | ||
1741 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx ); | |
1742 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) | |
1743 | return -EFAULT; | |
1744 | return 0; | |
1745 | } | |
1746 | ||
1747 | return -ENOIOCTLCMD; | |
1748 | } | |
1749 | ||
1750 | ||
1751 | /***************************************************************************** | |
1752 | * SerialBreak | |
1753 | * this function sends a break to the port | |
1754 | *****************************************************************************/ | |
1755 | static void edge_break (struct usb_serial_port *port, int break_state) | |
1756 | { | |
1757 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
6e8cf775 | 1758 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1759 | int status; |
1760 | ||
6e8cf775 GKH |
1761 | if ((!edge_serial->is_epic) || |
1762 | ((edge_serial->is_epic) && | |
1763 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1764 | /* flush and chase */ | |
cb8eaa8b | 1765 | edge_port->chaseResponsePending = true; |
6e8cf775 GKH |
1766 | |
1767 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__); | |
1768 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); | |
1769 | if (status == 0) { | |
1770 | // block until chase finished | |
1771 | block_until_chase_response(edge_port); | |
1772 | } else { | |
cb8eaa8b | 1773 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1774 | } |
1da177e4 LT |
1775 | } |
1776 | ||
6e8cf775 GKH |
1777 | if ((!edge_serial->is_epic) || |
1778 | ((edge_serial->is_epic) && | |
1779 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1780 | if (break_state == -1) { | |
1781 | dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__); | |
1782 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0); | |
1783 | } else { | |
1784 | dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__); | |
1785 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0); | |
1786 | } | |
1787 | if (status) { | |
1788 | dbg("%s - error sending break set/clear command.", __FUNCTION__); | |
1789 | } | |
1da177e4 LT |
1790 | } |
1791 | ||
1792 | return; | |
1793 | } | |
1794 | ||
1795 | ||
1796 | /***************************************************************************** | |
1797 | * process_rcvd_data | |
1798 | * this function handles the data received on the bulk in pipe. | |
1799 | *****************************************************************************/ | |
1800 | static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength) | |
1801 | { | |
1802 | struct usb_serial_port *port; | |
1803 | struct edgeport_port *edge_port; | |
1804 | struct tty_struct *tty; | |
1805 | __u16 lastBufferLength; | |
1806 | __u16 rxLen; | |
1807 | ||
1808 | dbg("%s", __FUNCTION__); | |
1809 | ||
1810 | lastBufferLength = bufferLength + 1; | |
1811 | ||
1812 | while (bufferLength > 0) { | |
1813 | /* failsafe incase we get a message that we don't understand */ | |
1814 | if (lastBufferLength == bufferLength) { | |
1815 | dbg("%s - stuck in loop, exiting it.", __FUNCTION__); | |
1816 | break; | |
1817 | } | |
1818 | lastBufferLength = bufferLength; | |
1819 | ||
1820 | switch (edge_serial->rxState) { | |
1821 | case EXPECT_HDR1: | |
1822 | edge_serial->rxHeader1 = *buffer; | |
1823 | ++buffer; | |
1824 | --bufferLength; | |
1825 | ||
1826 | if (bufferLength == 0) { | |
1827 | edge_serial->rxState = EXPECT_HDR2; | |
1828 | break; | |
1829 | } | |
1830 | /* otherwise, drop on through */ | |
1831 | ||
1832 | case EXPECT_HDR2: | |
1833 | edge_serial->rxHeader2 = *buffer; | |
1834 | ++buffer; | |
1835 | --bufferLength; | |
1836 | ||
1837 | dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2); | |
1838 | ||
1839 | // Process depending on whether this header is | |
1840 | // data or status | |
1841 | ||
1842 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1843 | // Decode this status header and goto EXPECT_HDR1 (if we | |
1844 | // can process the status with only 2 bytes), or goto | |
1845 | // EXPECT_HDR3 to get the third byte. | |
1846 | ||
1847 | edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1848 | edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1); | |
1849 | ||
1850 | if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) { | |
1851 | // This status needs additional bytes. Save what we have | |
1852 | // and then wait for more data. | |
1853 | edge_serial->rxStatusParam = edge_serial->rxHeader2; | |
1854 | ||
1855 | edge_serial->rxState = EXPECT_HDR3; | |
1856 | break; | |
1857 | } | |
1858 | ||
1859 | // We have all the header bytes, process the status now | |
1860 | process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0); | |
1861 | edge_serial->rxState = EXPECT_HDR1; | |
1862 | break; | |
1863 | } else { | |
1864 | edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1865 | edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2); | |
1866 | ||
1867 | dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining); | |
1868 | ||
1869 | //ASSERT( DevExt->RxPort < DevExt->NumPorts ); | |
1870 | //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH ); | |
1871 | ||
1872 | if (bufferLength == 0 ) { | |
1873 | edge_serial->rxState = EXPECT_DATA; | |
1874 | break; | |
1875 | } | |
1876 | // Else, drop through | |
1877 | } | |
1878 | ||
1879 | case EXPECT_DATA: // Expect data | |
1880 | ||
1881 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1882 | rxLen = bufferLength; | |
1883 | edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer | |
1884 | } else { | |
1885 | // BufLen >= RxBytesRemaining | |
1886 | rxLen = edge_serial->rxBytesRemaining; | |
1887 | edge_serial->rxState = EXPECT_HDR1; // Start another header next time | |
1888 | } | |
1889 | ||
1890 | bufferLength -= rxLen; | |
1891 | edge_serial->rxBytesRemaining -= rxLen; | |
1892 | ||
1893 | /* spit this data back into the tty driver if this port is open */ | |
1894 | if (rxLen) { | |
1895 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1896 | edge_port = usb_get_serial_port_data(port); | |
1897 | if (edge_port->open) { | |
1898 | tty = edge_port->port->tty; | |
1899 | if (tty) { | |
1900 | dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort); | |
1901 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); | |
1902 | } | |
1903 | edge_port->icount.rx += rxLen; | |
1904 | } | |
1905 | buffer += rxLen; | |
1906 | } | |
1907 | ||
1908 | break; | |
1909 | ||
1910 | case EXPECT_HDR3: // Expect 3rd byte of status header | |
1911 | edge_serial->rxHeader3 = *buffer; | |
1912 | ++buffer; | |
1913 | --bufferLength; | |
1914 | ||
1915 | // We have all the header bytes, process the status now | |
1916 | process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3); | |
1917 | edge_serial->rxState = EXPECT_HDR1; | |
1918 | break; | |
1919 | ||
1920 | } | |
1921 | } | |
1922 | } | |
1923 | ||
1924 | ||
1925 | /***************************************************************************** | |
1926 | * process_rcvd_status | |
1927 | * this function handles the any status messages received on the bulk in pipe. | |
1928 | *****************************************************************************/ | |
1929 | static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3) | |
1930 | { | |
1931 | struct usb_serial_port *port; | |
1932 | struct edgeport_port *edge_port; | |
1933 | __u8 code = edge_serial->rxStatusCode; | |
1934 | ||
1935 | /* switch the port pointer to the one being currently talked about */ | |
1936 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1937 | edge_port = usb_get_serial_port_data(port); | |
1938 | if (edge_port == NULL) { | |
1939 | dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort); | |
1940 | return; | |
1941 | } | |
1942 | ||
1943 | dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort); | |
1944 | ||
1945 | if (code == IOSP_EXT_STATUS) { | |
1946 | switch (byte2) { | |
1947 | case IOSP_EXT_STATUS_CHASE_RSP: | |
1948 | // we want to do EXT status regardless of port open/closed | |
1949 | dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 ); | |
1950 | // Currently, the only EXT_STATUS is Chase, so process here instead of one more call | |
1951 | // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do. | |
1952 | // Also, we currently clear flag and close the port regardless of content of above's Byte3. | |
1953 | // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport, | |
1954 | // like wait longer in block_until_chase_response, but for now we don't. | |
cb8eaa8b | 1955 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1956 | wake_up (&edge_port->wait_chase); |
1957 | return; | |
1958 | ||
1959 | case IOSP_EXT_STATUS_RX_CHECK_RSP: | |
1960 | dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 ); | |
cb8eaa8b | 1961 | //Port->RxCheckRsp = true; |
1da177e4 LT |
1962 | return; |
1963 | } | |
1964 | } | |
1965 | ||
1966 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1967 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1968 | edge_port->maxTxCredits = edge_port->txCredits; | |
1969 | dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits); | |
1970 | handle_new_msr (edge_port, byte2); | |
1971 | ||
1972 | /* send the current line settings to the port so we are in sync with any further termios calls */ | |
1973 | if (edge_port->port->tty) | |
1974 | change_port_settings (edge_port, edge_port->port->tty->termios); | |
1975 | ||
1976 | /* we have completed the open */ | |
cb8eaa8b RK |
1977 | edge_port->openPending = false; |
1978 | edge_port->open = true; | |
1da177e4 LT |
1979 | wake_up(&edge_port->wait_open); |
1980 | return; | |
1981 | } | |
1982 | ||
1983 | // If port is closed, silently discard all rcvd status. We can | |
1984 | // have cases where buffered status is received AFTER the close | |
1985 | // port command is sent to the Edgeport. | |
cb8eaa8b | 1986 | if (!edge_port->open || edge_port->closePending) { |
1da177e4 LT |
1987 | return; |
1988 | } | |
1989 | ||
1990 | switch (code) { | |
1991 | // Not currently sent by Edgeport | |
1992 | case IOSP_STATUS_LSR: | |
1993 | dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2); | |
cb8eaa8b | 1994 | handle_new_lsr(edge_port, false, byte2, 0); |
1da177e4 LT |
1995 | break; |
1996 | ||
1997 | case IOSP_STATUS_LSR_DATA: | |
1998 | dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3); | |
1999 | // byte2 is LSR Register | |
2000 | // byte3 is broken data byte | |
cb8eaa8b | 2001 | handle_new_lsr(edge_port, true, byte2, byte3); |
1da177e4 LT |
2002 | break; |
2003 | // | |
2004 | // case IOSP_EXT_4_STATUS: | |
2005 | // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3); | |
2006 | // break; | |
2007 | // | |
2008 | case IOSP_STATUS_MSR: | |
2009 | dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2); | |
2010 | ||
2011 | // Process this new modem status and generate appropriate | |
2012 | // events, etc, based on the new status. This routine | |
2013 | // also saves the MSR in Port->ShadowMsr. | |
2014 | handle_new_msr(edge_port, byte2); | |
2015 | break; | |
2016 | ||
2017 | default: | |
2018 | dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code); | |
2019 | break; | |
2020 | } | |
2021 | ||
2022 | return; | |
2023 | } | |
2024 | ||
2025 | ||
2026 | /***************************************************************************** | |
2027 | * edge_tty_recv | |
2028 | * this function passes data on to the tty flip buffer | |
2029 | *****************************************************************************/ | |
2030 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) | |
2031 | { | |
2032 | int cnt; | |
2033 | ||
2034 | do { | |
33f0f88f AC |
2035 | cnt = tty_buffer_request_room(tty, length); |
2036 | if (cnt < length) { | |
2037 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
2038 | __FUNCTION__, length - cnt); | |
2039 | if(cnt == 0) | |
2040 | break; | |
1da177e4 | 2041 | } |
33f0f88f | 2042 | tty_insert_flip_string(tty, data, cnt); |
1da177e4 LT |
2043 | data += cnt; |
2044 | length -= cnt; | |
2045 | } while (length > 0); | |
2046 | ||
2047 | tty_flip_buffer_push(tty); | |
2048 | } | |
2049 | ||
2050 | ||
2051 | /***************************************************************************** | |
2052 | * handle_new_msr | |
2053 | * this function handles any change to the msr register for a port. | |
2054 | *****************************************************************************/ | |
2055 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2056 | { | |
2057 | struct async_icount *icount; | |
2058 | ||
2059 | dbg("%s %02x", __FUNCTION__, newMsr); | |
2060 | ||
2061 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
2062 | icount = &edge_port->icount; | |
2063 | ||
2064 | /* update input line counters */ | |
2065 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) { | |
2066 | icount->cts++; | |
2067 | } | |
2068 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) { | |
2069 | icount->dsr++; | |
2070 | } | |
2071 | if (newMsr & EDGEPORT_MSR_DELTA_CD) { | |
2072 | icount->dcd++; | |
2073 | } | |
2074 | if (newMsr & EDGEPORT_MSR_DELTA_RI) { | |
2075 | icount->rng++; | |
2076 | } | |
2077 | wake_up_interruptible(&edge_port->delta_msr_wait); | |
2078 | } | |
2079 | ||
2080 | /* Save the new modem status */ | |
2081 | edge_port->shadowMSR = newMsr & 0xf0; | |
2082 | ||
2083 | return; | |
2084 | } | |
2085 | ||
2086 | ||
2087 | /***************************************************************************** | |
2088 | * handle_new_lsr | |
2089 | * this function handles any change to the lsr register for a port. | |
2090 | *****************************************************************************/ | |
2091 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data) | |
2092 | { | |
2093 | __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2094 | struct async_icount *icount; | |
2095 | ||
2096 | dbg("%s - %02x", __FUNCTION__, newLsr); | |
2097 | ||
2098 | edge_port->shadowLSR = lsr; | |
2099 | ||
2100 | if (newLsr & LSR_BREAK) { | |
2101 | // | |
2102 | // Parity and Framing errors only count if they | |
2103 | // occur exclusive of a break being | |
2104 | // received. | |
2105 | // | |
2106 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); | |
2107 | } | |
2108 | ||
2109 | /* Place LSR data byte into Rx buffer */ | |
2110 | if (lsrData && edge_port->port->tty) | |
2111 | edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1); | |
2112 | ||
2113 | /* update input line counters */ | |
2114 | icount = &edge_port->icount; | |
2115 | if (newLsr & LSR_BREAK) { | |
2116 | icount->brk++; | |
2117 | } | |
2118 | if (newLsr & LSR_OVER_ERR) { | |
2119 | icount->overrun++; | |
2120 | } | |
2121 | if (newLsr & LSR_PAR_ERR) { | |
2122 | icount->parity++; | |
2123 | } | |
2124 | if (newLsr & LSR_FRM_ERR) { | |
2125 | icount->frame++; | |
2126 | } | |
2127 | ||
2128 | return; | |
2129 | } | |
2130 | ||
2131 | ||
2132 | /**************************************************************************** | |
2133 | * sram_write | |
2134 | * writes a number of bytes to the Edgeport device's sram starting at the | |
2135 | * given address. | |
2136 | * If successful returns the number of bytes written, otherwise it returns | |
2137 | * a negative error number of the problem. | |
2138 | ****************************************************************************/ | |
2139 | static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) | |
2140 | { | |
2141 | int result; | |
2142 | __u16 current_length; | |
2143 | unsigned char *transfer_buffer; | |
2144 | ||
2145 | dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); | |
2146 | ||
2147 | transfer_buffer = kmalloc (64, GFP_KERNEL); | |
2148 | if (!transfer_buffer) { | |
2149 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); | |
2150 | return -ENOMEM; | |
2151 | } | |
2152 | ||
2153 | /* need to split these writes up into 64 byte chunks */ | |
2154 | result = 0; | |
2155 | while (length > 0) { | |
2156 | if (length > 64) { | |
2157 | current_length = 64; | |
2158 | } else { | |
2159 | current_length = length; | |
2160 | } | |
2161 | // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); | |
2162 | memcpy (transfer_buffer, data, current_length); | |
2163 | result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM, | |
2164 | 0x40, addr, extAddr, transfer_buffer, current_length, 300); | |
2165 | if (result < 0) | |
2166 | break; | |
2167 | length -= current_length; | |
2168 | addr += current_length; | |
2169 | data += current_length; | |
2170 | } | |
2171 | ||
2172 | kfree (transfer_buffer); | |
2173 | return result; | |
2174 | } | |
2175 | ||
2176 | ||
2177 | /**************************************************************************** | |
2178 | * rom_write | |
2179 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2180 | * given address. | |
2181 | * If successful returns the number of bytes written, otherwise it returns | |
2182 | * a negative error number of the problem. | |
2183 | ****************************************************************************/ | |
2184 | static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) | |
2185 | { | |
2186 | int result; | |
2187 | __u16 current_length; | |
2188 | unsigned char *transfer_buffer; | |
2189 | ||
2190 | // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); | |
2191 | ||
2192 | transfer_buffer = kmalloc (64, GFP_KERNEL); | |
2193 | if (!transfer_buffer) { | |
2194 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); | |
2195 | return -ENOMEM; | |
2196 | } | |
2197 | ||
2198 | /* need to split these writes up into 64 byte chunks */ | |
2199 | result = 0; | |
2200 | while (length > 0) { | |
2201 | if (length > 64) { | |
2202 | current_length = 64; | |
2203 | } else { | |
2204 | current_length = length; | |
2205 | } | |
2206 | // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); | |
2207 | memcpy (transfer_buffer, data, current_length); | |
2208 | result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM, | |
2209 | 0x40, addr, extAddr, transfer_buffer, current_length, 300); | |
2210 | if (result < 0) | |
2211 | break; | |
2212 | length -= current_length; | |
2213 | addr += current_length; | |
2214 | data += current_length; | |
2215 | } | |
2216 | ||
2217 | kfree (transfer_buffer); | |
2218 | return result; | |
2219 | } | |
2220 | ||
2221 | ||
2222 | /**************************************************************************** | |
2223 | * rom_read | |
2224 | * reads a number of bytes from the Edgeport device starting at the given | |
2225 | * address. | |
2226 | * If successful returns the number of bytes read, otherwise it returns | |
2227 | * a negative error number of the problem. | |
2228 | ****************************************************************************/ | |
2229 | static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) | |
2230 | { | |
2231 | int result; | |
2232 | __u16 current_length; | |
2233 | unsigned char *transfer_buffer; | |
2234 | ||
2235 | dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); | |
2236 | ||
2237 | transfer_buffer = kmalloc (64, GFP_KERNEL); | |
2238 | if (!transfer_buffer) { | |
2239 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); | |
2240 | return -ENOMEM; | |
2241 | } | |
2242 | ||
2243 | /* need to split these reads up into 64 byte chunks */ | |
2244 | result = 0; | |
2245 | while (length > 0) { | |
2246 | if (length > 64) { | |
2247 | current_length = 64; | |
2248 | } else { | |
2249 | current_length = length; | |
2250 | } | |
2251 | // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); | |
2252 | result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM, | |
2253 | 0xC0, addr, extAddr, transfer_buffer, current_length, 300); | |
2254 | if (result < 0) | |
2255 | break; | |
2256 | memcpy (data, transfer_buffer, current_length); | |
2257 | length -= current_length; | |
2258 | addr += current_length; | |
2259 | data += current_length; | |
2260 | } | |
2261 | ||
2262 | kfree (transfer_buffer); | |
2263 | return result; | |
2264 | } | |
2265 | ||
2266 | ||
2267 | /**************************************************************************** | |
2268 | * send_iosp_ext_cmd | |
2269 | * Is used to send a IOSP message to the Edgeport device | |
2270 | ****************************************************************************/ | |
2271 | static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param) | |
2272 | { | |
2273 | unsigned char *buffer; | |
2274 | unsigned char *currentCommand; | |
2275 | int length = 0; | |
2276 | int status = 0; | |
2277 | ||
2278 | dbg("%s - %d, %d", __FUNCTION__, command, param); | |
2279 | ||
2280 | buffer = kmalloc (10, GFP_ATOMIC); | |
2281 | if (!buffer) { | |
2282 | dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10); | |
2283 | return -ENOMEM; | |
2284 | } | |
2285 | ||
2286 | currentCommand = buffer; | |
2287 | ||
2288 | MAKE_CMD_EXT_CMD (¤tCommand, &length, | |
2289 | edge_port->port->number - edge_port->port->serial->minor, | |
2290 | command, param); | |
2291 | ||
2292 | status = write_cmd_usb (edge_port, buffer, length); | |
2293 | if (status) { | |
2294 | /* something bad happened, let's free up the memory */ | |
2295 | kfree(buffer); | |
2296 | } | |
2297 | ||
2298 | return status; | |
2299 | } | |
2300 | ||
2301 | ||
2302 | /***************************************************************************** | |
2303 | * write_cmd_usb | |
2304 | * this function writes the given buffer out to the bulk write endpoint. | |
2305 | *****************************************************************************/ | |
2306 | static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length) | |
2307 | { | |
2308 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); | |
2309 | int status = 0; | |
2310 | struct urb *urb; | |
2311 | int timeout; | |
2312 | ||
2313 | usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer); | |
2314 | ||
2315 | /* Allocate our next urb */ | |
2316 | urb = usb_alloc_urb (0, GFP_ATOMIC); | |
2317 | if (!urb) | |
2318 | return -ENOMEM; | |
2319 | ||
96c706ed ON |
2320 | atomic_inc(&CmdUrbs); |
2321 | dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
2322 | |
2323 | usb_fill_bulk_urb (urb, edge_serial->serial->dev, | |
2324 | usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), | |
2325 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
2326 | ||
cb8eaa8b | 2327 | edge_port->commandPending = true; |
1da177e4 LT |
2328 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2329 | ||
2330 | if (status) { | |
2331 | /* something went wrong */ | |
2332 | dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status); | |
2333 | usb_kill_urb(urb); | |
2334 | usb_free_urb(urb); | |
96c706ed | 2335 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2336 | return status; |
2337 | } | |
2338 | ||
2339 | // wait for command to finish | |
2340 | timeout = COMMAND_TIMEOUT; | |
2341 | #if 0 | |
cb8eaa8b | 2342 | wait_event (&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2343 | |
cb8eaa8b | 2344 | if (edge_port->commandPending) { |
1da177e4 LT |
2345 | /* command timed out */ |
2346 | dbg("%s - command timed out", __FUNCTION__); | |
2347 | status = -EINVAL; | |
2348 | } | |
2349 | #endif | |
2350 | return status; | |
2351 | } | |
2352 | ||
2353 | ||
2354 | /***************************************************************************** | |
2355 | * send_cmd_write_baud_rate | |
2356 | * this function sends the proper command to change the baud rate of the | |
2357 | * specified port. | |
2358 | *****************************************************************************/ | |
2359 | static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate) | |
2360 | { | |
6e8cf775 | 2361 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
1da177e4 LT |
2362 | unsigned char *cmdBuffer; |
2363 | unsigned char *currCmd; | |
2364 | int cmdLen = 0; | |
2365 | int divisor; | |
2366 | int status; | |
2367 | unsigned char number = edge_port->port->number - edge_port->port->serial->minor; | |
2368 | ||
6e8cf775 GKH |
2369 | if ((!edge_serial->is_epic) || |
2370 | ((edge_serial->is_epic) && | |
2371 | (!edge_serial->epic_descriptor.Supports.IOSPSetBaudRate))) { | |
2372 | dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d", | |
2373 | edge_port->port->number, baudRate); | |
2374 | return 0; | |
2375 | } | |
2376 | ||
1da177e4 LT |
2377 | dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate); |
2378 | ||
2379 | status = calc_baud_rate_divisor (baudRate, &divisor); | |
2380 | if (status) { | |
2381 | dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__); | |
2382 | return status; | |
2383 | } | |
2384 | ||
2385 | // Alloc memory for the string of commands. | |
2386 | cmdBuffer = kmalloc (0x100, GFP_ATOMIC); | |
2387 | if (!cmdBuffer) { | |
2388 | dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100); | |
2389 | return -ENOMEM; | |
2390 | } | |
2391 | currCmd = cmdBuffer; | |
2392 | ||
2393 | // Enable access to divisor latch | |
2394 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE ); | |
2395 | ||
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) ); | |
2399 | ||
2400 | // Restore original value to disable access to divisor latch | |
2401 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR); | |
2402 | ||
2403 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen ); | |
2404 | if (status) { | |
2405 | /* something bad happened, let's free up the memory */ | |
2406 | kfree (cmdBuffer); | |
2407 | } | |
2408 | ||
2409 | return status; | |
2410 | } | |
2411 | ||
2412 | ||
2413 | /***************************************************************************** | |
2414 | * calc_baud_rate_divisor | |
2415 | * this function calculates the proper baud rate divisor for the specified | |
2416 | * baud rate. | |
2417 | *****************************************************************************/ | |
2418 | static int calc_baud_rate_divisor (int baudrate, int *divisor) | |
2419 | { | |
2420 | int i; | |
2421 | __u16 custom; | |
2422 | ||
2423 | ||
2424 | dbg("%s - %d", __FUNCTION__, baudrate); | |
2425 | ||
52950ed4 | 2426 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
1da177e4 LT |
2427 | if ( divisor_table[i].BaudRate == baudrate ) { |
2428 | *divisor = divisor_table[i].Divisor; | |
2429 | return 0; | |
2430 | } | |
2431 | } | |
2432 | ||
2433 | // We have tried all of the standard baud rates | |
2434 | // lets try to calculate the divisor for this baud rate | |
2435 | // Make sure the baud rate is reasonable | |
2436 | if (baudrate > 50 && baudrate < 230400) { | |
2437 | // get divisor | |
2438 | custom = (__u16)((230400L + baudrate/2) / baudrate); | |
2439 | ||
2440 | *divisor = custom; | |
2441 | ||
2442 | dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom); | |
2443 | return 0; | |
2444 | } | |
2445 | ||
2446 | return -1; | |
2447 | } | |
2448 | ||
2449 | ||
2450 | /***************************************************************************** | |
2451 | * send_cmd_write_uart_register | |
2452 | * this function builds up a uart register message and sends to to the device. | |
2453 | *****************************************************************************/ | |
2454 | static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue) | |
2455 | { | |
6e8cf775 | 2456 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
1da177e4 LT |
2457 | unsigned char *cmdBuffer; |
2458 | unsigned char *currCmd; | |
2459 | unsigned long cmdLen = 0; | |
2460 | int status; | |
2461 | ||
2462 | dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue); | |
2463 | ||
6e8cf775 GKH |
2464 | if ((!edge_serial->is_epic) || |
2465 | ((edge_serial->is_epic) && | |
2466 | (!edge_serial->epic_descriptor.Supports.IOSPWriteMCR) && | |
2467 | (regNum == MCR))) { | |
beb7dd86 | 2468 | dbg("SendCmdWriteUartReg - Not writing to MCR Register"); |
6e8cf775 GKH |
2469 | return 0; |
2470 | } | |
2471 | ||
2472 | if ((!edge_serial->is_epic) || | |
2473 | ((edge_serial->is_epic) && | |
2474 | (!edge_serial->epic_descriptor.Supports.IOSPWriteLCR) && | |
2475 | (regNum == LCR))) { | |
beb7dd86 | 2476 | dbg ("SendCmdWriteUartReg - Not writing to LCR Register"); |
6e8cf775 GKH |
2477 | return 0; |
2478 | } | |
2479 | ||
1da177e4 LT |
2480 | // Alloc memory for the string of commands. |
2481 | cmdBuffer = kmalloc (0x10, GFP_ATOMIC); | |
2482 | if (cmdBuffer == NULL ) { | |
2483 | return -ENOMEM; | |
2484 | } | |
2485 | ||
2486 | currCmd = cmdBuffer; | |
2487 | ||
2488 | // Build a cmd in the buffer to write the given register | |
2489 | MAKE_CMD_WRITE_REG (&currCmd, &cmdLen, | |
2490 | edge_port->port->number - edge_port->port->serial->minor, | |
2491 | regNum, regValue); | |
2492 | ||
2493 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2494 | if (status) { | |
2495 | /* something bad happened, let's free up the memory */ | |
2496 | kfree (cmdBuffer); | |
2497 | } | |
2498 | ||
2499 | return status; | |
2500 | } | |
2501 | ||
2502 | ||
2503 | /***************************************************************************** | |
2504 | * change_port_settings | |
2505 | * This routine is called to set the UART on the device to match the specified | |
2506 | * new settings. | |
2507 | *****************************************************************************/ | |
2508 | #ifndef CMSPAR | |
2509 | #define CMSPAR 0 | |
2510 | #endif | |
606d099c | 2511 | static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios) |
1da177e4 | 2512 | { |
6e8cf775 | 2513 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
1da177e4 LT |
2514 | struct tty_struct *tty; |
2515 | int baud; | |
2516 | unsigned cflag; | |
2517 | __u8 mask = 0xff; | |
2518 | __u8 lData; | |
2519 | __u8 lParity; | |
2520 | __u8 lStop; | |
2521 | __u8 rxFlow; | |
2522 | __u8 txFlow; | |
2523 | int status; | |
2524 | ||
2525 | dbg("%s - port %d", __FUNCTION__, edge_port->port->number); | |
2526 | ||
cb8eaa8b RK |
2527 | if (!edge_port->open && |
2528 | !edge_port->openPending) { | |
1da177e4 LT |
2529 | dbg("%s - port not opened", __FUNCTION__); |
2530 | return; | |
2531 | } | |
2532 | ||
2533 | tty = edge_port->port->tty; | |
2534 | if ((!tty) || | |
2535 | (!tty->termios)) { | |
2536 | dbg("%s - no tty structures", __FUNCTION__); | |
2537 | return; | |
2538 | } | |
2539 | ||
2540 | cflag = tty->termios->c_cflag; | |
2541 | ||
2542 | switch (cflag & CSIZE) { | |
2543 | case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break; | |
2544 | case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break; | |
2545 | case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break; | |
2546 | default: | |
2547 | case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break; | |
2548 | } | |
2549 | ||
2550 | lParity = LCR_PAR_NONE; | |
2551 | if (cflag & PARENB) { | |
2552 | if (cflag & CMSPAR) { | |
2553 | if (cflag & PARODD) { | |
2554 | lParity = LCR_PAR_MARK; | |
2555 | dbg("%s - parity = mark", __FUNCTION__); | |
2556 | } else { | |
2557 | lParity = LCR_PAR_SPACE; | |
2558 | dbg("%s - parity = space", __FUNCTION__); | |
2559 | } | |
2560 | } else if (cflag & PARODD) { | |
2561 | lParity = LCR_PAR_ODD; | |
2562 | dbg("%s - parity = odd", __FUNCTION__); | |
2563 | } else { | |
2564 | lParity = LCR_PAR_EVEN; | |
2565 | dbg("%s - parity = even", __FUNCTION__); | |
2566 | } | |
2567 | } else { | |
2568 | dbg("%s - parity = none", __FUNCTION__); | |
2569 | } | |
2570 | ||
2571 | if (cflag & CSTOPB) { | |
2572 | lStop = LCR_STOP_2; | |
2573 | dbg("%s - stop bits = 2", __FUNCTION__); | |
2574 | } else { | |
2575 | lStop = LCR_STOP_1; | |
2576 | dbg("%s - stop bits = 1", __FUNCTION__); | |
2577 | } | |
2578 | ||
2579 | /* figure out the flow control settings */ | |
2580 | rxFlow = txFlow = 0x00; | |
2581 | if (cflag & CRTSCTS) { | |
2582 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2583 | txFlow |= IOSP_TX_FLOW_CTS; | |
2584 | dbg("%s - RTS/CTS is enabled", __FUNCTION__); | |
2585 | } else { | |
2586 | dbg("%s - RTS/CTS is disabled", __FUNCTION__); | |
2587 | } | |
2588 | ||
2589 | /* if we are implementing XON/XOFF, set the start and stop character in the device */ | |
2590 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
2591 | unsigned char stop_char = STOP_CHAR(tty); | |
2592 | unsigned char start_char = START_CHAR(tty); | |
2593 | ||
6e8cf775 GKH |
2594 | if ((!edge_serial->is_epic) || |
2595 | ((edge_serial->is_epic) && | |
2596 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
2597 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XON_CHAR, start_char); | |
2598 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
2599 | } | |
1da177e4 LT |
2600 | |
2601 | /* if we are implementing INBOUND XON/XOFF */ | |
2602 | if (I_IXOFF(tty)) { | |
2603 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
2604 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char); | |
2605 | } else { | |
2606 | dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__); | |
2607 | } | |
2608 | ||
2609 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2610 | if (I_IXON(tty)) { | |
2611 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
2612 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char); | |
2613 | } else { | |
2614 | dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__); | |
2615 | } | |
2616 | } | |
2617 | ||
2618 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2619 | if ((!edge_serial->is_epic) || |
2620 | ((edge_serial->is_epic) && | |
2621 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2622 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2623 | if ((!edge_serial->is_epic) || | |
2624 | ((edge_serial->is_epic) && | |
2625 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2626 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2627 | |
2628 | ||
2629 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2630 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2631 | ||
2632 | edge_port->validDataMask = mask; | |
2633 | ||
2634 | /* Send the updated LCR value to the EdgePort */ | |
2635 | status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR); | |
2636 | if (status != 0) { | |
2637 | return; | |
2638 | } | |
2639 | ||
2640 | /* set up the MCR register and send it to the EdgePort */ | |
2641 | edge_port->shadowMCR = MCR_MASTER_IE; | |
2642 | if (cflag & CBAUD) { | |
2643 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); | |
2644 | } | |
2645 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
2646 | if (status != 0) { | |
2647 | return; | |
2648 | } | |
2649 | ||
2650 | /* Determine divisor based on baud rate */ | |
2651 | baud = tty_get_baud_rate(tty); | |
2652 | if (!baud) { | |
2653 | /* pick a default, any default... */ | |
2654 | baud = 9600; | |
2655 | } | |
2656 | ||
2657 | dbg("%s - baud rate = %d", __FUNCTION__, baud); | |
2658 | status = send_cmd_write_baud_rate (edge_port, baud); | |
2659 | ||
2660 | return; | |
2661 | } | |
2662 | ||
2663 | ||
2664 | /**************************************************************************** | |
2665 | * unicode_to_ascii | |
2666 | * Turns a string from Unicode into ASCII. | |
2667 | * Doesn't do a good job with any characters that are outside the normal | |
2668 | * ASCII range, but it's only for debugging... | |
2669 | * NOTE: expects the unicode in LE format | |
2670 | ****************************************************************************/ | |
ad93375a | 2671 | static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size) |
1da177e4 LT |
2672 | { |
2673 | int i; | |
2674 | ||
ad93375a | 2675 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2676 | return; |
ad93375a | 2677 | --buflen; /* space for nul */ |
1da177e4 | 2678 | |
ad93375a PZ |
2679 | for (i = 0; i < unicode_size; i++) { |
2680 | if (i >= buflen) | |
2681 | break; | |
1da177e4 | 2682 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2683 | } |
2684 | string[i] = 0x00; | |
1da177e4 LT |
2685 | } |
2686 | ||
2687 | ||
2688 | /**************************************************************************** | |
2689 | * get_manufacturing_desc | |
2690 | * reads in the manufacturing descriptor and stores it into the serial | |
2691 | * structure. | |
2692 | ****************************************************************************/ | |
2693 | static void get_manufacturing_desc (struct edgeport_serial *edge_serial) | |
2694 | { | |
2695 | int response; | |
2696 | ||
2697 | dbg("getting manufacturer descriptor"); | |
2698 | ||
2699 | response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2700 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN, | |
2701 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
2702 | ||
2703 | if (response < 1) { | |
2704 | dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n"); | |
2705 | } else { | |
2706 | char string[30]; | |
2707 | dbg("**Manufacturer Descriptor"); | |
2708 | dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize); | |
2709 | dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize); | |
2710 | dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev); | |
2711 | dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev); | |
2712 | dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts); | |
2713 | dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2714 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2715 | edge_serial->manuf_descriptor.SerialNumber, |
2716 | edge_serial->manuf_descriptor.SerNumLength/2); | |
1da177e4 | 2717 | dbg(" SerialNumber: %s", string); |
4bc203d9 | 2718 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2719 | edge_serial->manuf_descriptor.AssemblyNumber, |
2720 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
1da177e4 | 2721 | dbg(" AssemblyNumber: %s", string); |
4bc203d9 | 2722 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2723 | edge_serial->manuf_descriptor.OemAssyNumber, |
2724 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
1da177e4 LT |
2725 | dbg(" OemAssyNumber: %s", string); |
2726 | dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType); | |
2727 | dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid); | |
2728 | dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig); | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | ||
2733 | /**************************************************************************** | |
2734 | * get_boot_desc | |
2735 | * reads in the bootloader descriptor and stores it into the serial | |
2736 | * structure. | |
2737 | ****************************************************************************/ | |
2738 | static void get_boot_desc (struct edgeport_serial *edge_serial) | |
2739 | { | |
2740 | int response; | |
2741 | ||
2742 | dbg("getting boot descriptor"); | |
2743 | ||
2744 | response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2745 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN, | |
2746 | (__u8 *)(&edge_serial->boot_descriptor)); | |
2747 | ||
2748 | if (response < 1) { | |
2749 | dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n"); | |
2750 | } else { | |
2751 | dbg("**Boot Descriptor:"); | |
2752 | dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2753 | dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion); | |
2754 | dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion); | |
2755 | dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
2756 | dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); | |
2757 | dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0); | |
2758 | dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1); | |
2759 | } | |
2760 | } | |
2761 | ||
2762 | ||
2763 | /**************************************************************************** | |
2764 | * load_application_firmware | |
2765 | * This is called to load the application firmware to the device | |
2766 | ****************************************************************************/ | |
2767 | static void load_application_firmware (struct edgeport_serial *edge_serial) | |
2768 | { | |
2769 | struct edge_firmware_image_record *record; | |
2770 | unsigned char *firmware; | |
2771 | unsigned char *FirmwareImage; | |
2772 | int ImageSize; | |
2773 | int response; | |
2774 | ||
2775 | ||
2776 | switch (edge_serial->product_info.iDownloadFile) { | |
2777 | case EDGE_DOWNLOAD_FILE_I930: | |
2778 | dbg("downloading firmware version (930) %d.%d.%d", | |
2779 | OperationalCodeImageVersion_GEN1.MajorVersion, | |
2780 | OperationalCodeImageVersion_GEN1.MinorVersion, | |
2781 | OperationalCodeImageVersion_GEN1.BuildNumber); | |
2782 | firmware = &OperationalCodeImage_GEN1[0]; | |
2783 | FirmwareImage = &OperationalCodeImage_GEN1[0]; | |
2784 | ImageSize = sizeof(OperationalCodeImage_GEN1); | |
2785 | break; | |
2786 | ||
2787 | case EDGE_DOWNLOAD_FILE_80251: | |
2788 | dbg("downloading firmware version (80251) %d.%d.%d", | |
2789 | OperationalCodeImageVersion_GEN2.MajorVersion, | |
2790 | OperationalCodeImageVersion_GEN2.MinorVersion, | |
2791 | OperationalCodeImageVersion_GEN2.BuildNumber); | |
2792 | firmware = &OperationalCodeImage_GEN2[0]; | |
2793 | FirmwareImage = &OperationalCodeImage_GEN2[0]; | |
2794 | ImageSize = sizeof(OperationalCodeImage_GEN2); | |
2795 | break; | |
2796 | ||
2797 | case EDGE_DOWNLOAD_FILE_NONE: | |
2798 | dbg ("No download file specified, skipping download\n"); | |
2799 | return; | |
2800 | ||
2801 | default: | |
2802 | return; | |
2803 | } | |
2804 | ||
2805 | ||
2806 | for (;;) { | |
2807 | record = (struct edge_firmware_image_record *)firmware; | |
2808 | response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]); | |
2809 | if (response < 0) { | |
2810 | dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len)); | |
2811 | break; | |
2812 | } | |
2813 | firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len); | |
2814 | if (firmware >= &FirmwareImage[ImageSize]) { | |
2815 | break; | |
2816 | } | |
2817 | } | |
2818 | ||
2819 | dbg("sending exec_dl_code"); | |
2820 | response = usb_control_msg (edge_serial->serial->dev, | |
2821 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2822 | USB_REQUEST_ION_EXEC_DL_CODE, | |
2823 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); | |
2824 | ||
2825 | return; | |
2826 | } | |
2827 | ||
2828 | ||
2829 | /**************************************************************************** | |
2830 | * edge_startup | |
2831 | ****************************************************************************/ | |
2832 | static int edge_startup (struct usb_serial *serial) | |
2833 | { | |
2834 | struct edgeport_serial *edge_serial; | |
2835 | struct edgeport_port *edge_port; | |
2836 | struct usb_device *dev; | |
bfd5df3c | 2837 | int i, j; |
6e8cf775 | 2838 | int response; |
cb8eaa8b RK |
2839 | bool interrupt_in_found; |
2840 | bool bulk_in_found; | |
2841 | bool bulk_out_found; | |
6e8cf775 GKH |
2842 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2843 | EDGE_COMPATIBILITY_MASK1, | |
2844 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2845 | |
2846 | dev = serial->dev; | |
2847 | ||
2848 | /* create our private serial structure */ | |
80b6ca48 | 2849 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 LT |
2850 | if (edge_serial == NULL) { |
2851 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); | |
2852 | return -ENOMEM; | |
2853 | } | |
1da177e4 LT |
2854 | spin_lock_init(&edge_serial->es_lock); |
2855 | edge_serial->serial = serial; | |
2856 | usb_set_serial_data(serial, edge_serial); | |
2857 | ||
2858 | /* get the name for the device from the device */ | |
ad93375a PZ |
2859 | i = get_string(dev, dev->descriptor.iManufacturer, |
2860 | &edge_serial->name[0], MAX_NAME_LEN+1); | |
2861 | edge_serial->name[i++] = ' '; | |
2862 | get_string(dev, dev->descriptor.iProduct, | |
2863 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); | |
1da177e4 LT |
2864 | |
2865 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2866 | ||
6e8cf775 GKH |
2867 | /* Read the epic descriptor */ |
2868 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2869 | /* memcpy descriptor to Supports structures */ | |
2870 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2871 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2872 | |
6e8cf775 GKH |
2873 | /* get the manufacturing descriptor for this device */ |
2874 | get_manufacturing_desc (edge_serial); | |
1da177e4 | 2875 | |
6e8cf775 GKH |
2876 | /* get the boot descriptor */ |
2877 | get_boot_desc (edge_serial); | |
2878 | ||
2879 | get_product_info(edge_serial); | |
2880 | } | |
1da177e4 LT |
2881 | |
2882 | /* set the number of ports from the manufacturing description */ | |
2883 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2884 | if ((!edge_serial->is_epic) && |
2885 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
2886 | dev_warn(&serial->dev->dev, "Device Reported %d serial ports " | |
2887 | "vs. core thinking we have %d ports, email " | |
2888 | "greg@kroah.com this information.", | |
2889 | edge_serial->product_info.NumPorts, | |
2890 | serial->num_ports); | |
1da177e4 LT |
2891 | } |
2892 | ||
2893 | dbg("%s - time 1 %ld", __FUNCTION__, jiffies); | |
2894 | ||
6e8cf775 GKH |
2895 | /* If not an EPiC device */ |
2896 | if (!edge_serial->is_epic) { | |
2897 | /* now load the application firmware into this device */ | |
2898 | load_application_firmware (edge_serial); | |
1da177e4 | 2899 | |
6e8cf775 | 2900 | dbg("%s - time 2 %ld", __FUNCTION__, jiffies); |
1da177e4 | 2901 | |
6e8cf775 GKH |
2902 | /* Check current Edgeport EEPROM and update if necessary */ |
2903 | update_edgeport_E2PROM (edge_serial); | |
1da177e4 | 2904 | |
6e8cf775 GKH |
2905 | dbg("%s - time 3 %ld", __FUNCTION__, jiffies); |
2906 | ||
2907 | /* set the configuration to use #1 */ | |
2908 | // dbg("set_configuration 1"); | |
2909 | // usb_set_configuration (dev, 1); | |
2910 | } | |
1da177e4 LT |
2911 | |
2912 | /* we set up the pointers to the endpoints in the edge_open function, | |
2913 | * as the structures aren't created yet. */ | |
2914 | ||
2915 | /* set up our port private structures */ | |
2916 | for (i = 0; i < serial->num_ports; ++i) { | |
2917 | edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL); | |
2918 | if (edge_port == NULL) { | |
2919 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); | |
bfd5df3c CL |
2920 | for (j = 0; j < i; ++j) { |
2921 | kfree (usb_get_serial_port_data(serial->port[j])); | |
2922 | usb_set_serial_port_data(serial->port[j], NULL); | |
2923 | } | |
1da177e4 LT |
2924 | usb_set_serial_data(serial, NULL); |
2925 | kfree(edge_serial); | |
2926 | return -ENOMEM; | |
2927 | } | |
2928 | memset (edge_port, 0, sizeof(struct edgeport_port)); | |
2929 | spin_lock_init(&edge_port->ep_lock); | |
2930 | edge_port->port = serial->port[i]; | |
2931 | usb_set_serial_port_data(serial->port[i], edge_port); | |
2932 | } | |
6e8cf775 GKH |
2933 | |
2934 | response = 0; | |
2935 | ||
2936 | if (edge_serial->is_epic) { | |
2937 | /* EPIC thing, set up our interrupt polling now and our read urb, so | |
2938 | * that the device knows it really is connected. */ | |
cb8eaa8b | 2939 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
6e8cf775 GKH |
2940 | for (i = 0; i < serial->interface->altsetting[0].desc.bNumEndpoints; ++i) { |
2941 | struct usb_endpoint_descriptor *endpoint; | |
2942 | int buffer_size; | |
2943 | ||
2944 | endpoint = &serial->interface->altsetting[0].endpoint[i].desc; | |
2945 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
cb8eaa8b | 2946 | if (!interrupt_in_found && |
6e8cf775 GKH |
2947 | (usb_endpoint_is_int_in(endpoint))) { |
2948 | /* we found a interrupt in endpoint */ | |
2949 | dbg("found interrupt in"); | |
2950 | ||
2951 | /* not set up yet, so do it now */ | |
2952 | edge_serial->interrupt_read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2953 | if (!edge_serial->interrupt_read_urb) { | |
2954 | err("out of memory"); | |
2955 | return -ENOMEM; | |
2956 | } | |
2957 | edge_serial->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2958 | if (!edge_serial->interrupt_in_buffer) { | |
2959 | err("out of memory"); | |
2960 | usb_free_urb(edge_serial->interrupt_read_urb); | |
2961 | return -ENOMEM; | |
2962 | } | |
2963 | edge_serial->interrupt_in_endpoint = endpoint->bEndpointAddress; | |
2964 | ||
2965 | /* set up our interrupt urb */ | |
2966 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
2967 | dev, | |
2968 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), | |
2969 | edge_serial->interrupt_in_buffer, | |
2970 | buffer_size, | |
2971 | edge_interrupt_callback, | |
2972 | edge_serial, | |
2973 | endpoint->bInterval); | |
2974 | ||
cb8eaa8b | 2975 | interrupt_in_found = true; |
6e8cf775 GKH |
2976 | } |
2977 | ||
cb8eaa8b | 2978 | if (!bulk_in_found && |
6e8cf775 GKH |
2979 | (usb_endpoint_is_bulk_in(endpoint))) { |
2980 | /* we found a bulk in endpoint */ | |
2981 | dbg("found bulk in"); | |
2982 | ||
2983 | /* not set up yet, so do it now */ | |
2984 | edge_serial->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2985 | if (!edge_serial->read_urb) { | |
2986 | err("out of memory"); | |
2987 | return -ENOMEM; | |
2988 | } | |
2989 | edge_serial->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2990 | if (!edge_serial->bulk_in_buffer) { | |
2991 | err ("out of memory"); | |
2992 | usb_free_urb(edge_serial->read_urb); | |
2993 | return -ENOMEM; | |
2994 | } | |
2995 | edge_serial->bulk_in_endpoint = endpoint->bEndpointAddress; | |
2996 | ||
2997 | /* set up our bulk in urb */ | |
2998 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
2999 | usb_rcvbulkpipe(dev, endpoint->bEndpointAddress), | |
3000 | edge_serial->bulk_in_buffer, | |
3001 | endpoint->wMaxPacketSize, | |
3002 | edge_bulk_in_callback, | |
3003 | edge_serial); | |
cb8eaa8b | 3004 | bulk_in_found = true; |
6e8cf775 GKH |
3005 | } |
3006 | ||
cb8eaa8b | 3007 | if (!bulk_out_found && |
6e8cf775 GKH |
3008 | (usb_endpoint_is_bulk_out(endpoint))) { |
3009 | /* we found a bulk out endpoint */ | |
3010 | dbg("found bulk out"); | |
3011 | edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress; | |
cb8eaa8b | 3012 | bulk_out_found = true; |
6e8cf775 GKH |
3013 | } |
3014 | } | |
3015 | ||
cb8eaa8b | 3016 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
6e8cf775 GKH |
3017 | err ("Error - the proper endpoints were not found!"); |
3018 | return -ENODEV; | |
3019 | } | |
3020 | ||
3021 | /* start interrupt read for this edgeport this interrupt will | |
3022 | * continue as long as the edgeport is connected */ | |
3023 | response = usb_submit_urb(edge_serial->interrupt_read_urb, GFP_KERNEL); | |
3024 | if (response) | |
3025 | err("%s - Error %d submitting control urb", __FUNCTION__, response); | |
3026 | } | |
3027 | return response; | |
1da177e4 LT |
3028 | } |
3029 | ||
3030 | ||
3031 | /**************************************************************************** | |
3032 | * edge_shutdown | |
3033 | * This function is called whenever the device is removed from the usb bus. | |
3034 | ****************************************************************************/ | |
3035 | static void edge_shutdown (struct usb_serial *serial) | |
3036 | { | |
6e8cf775 | 3037 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 LT |
3038 | int i; |
3039 | ||
3040 | dbg("%s", __FUNCTION__); | |
3041 | ||
3042 | /* stop reads and writes on all ports */ | |
3043 | for (i=0; i < serial->num_ports; ++i) { | |
3044 | kfree (usb_get_serial_port_data(serial->port[i])); | |
3045 | usb_set_serial_port_data(serial->port[i], NULL); | |
3046 | } | |
6e8cf775 GKH |
3047 | /* free up our endpoint stuff */ |
3048 | if (edge_serial->is_epic) { | |
3049 | usb_unlink_urb(edge_serial->interrupt_read_urb); | |
3050 | usb_free_urb(edge_serial->interrupt_read_urb); | |
3051 | kfree(edge_serial->interrupt_in_buffer); | |
3052 | ||
3053 | usb_unlink_urb(edge_serial->read_urb); | |
3054 | usb_free_urb(edge_serial->read_urb); | |
3055 | kfree(edge_serial->bulk_in_buffer); | |
3056 | } | |
3057 | ||
3058 | kfree(edge_serial); | |
1da177e4 LT |
3059 | usb_set_serial_data(serial, NULL); |
3060 | } | |
3061 | ||
3062 | ||
3063 | /**************************************************************************** | |
3064 | * edgeport_init | |
3065 | * This is called by the module subsystem, or on startup to initialize us | |
3066 | ****************************************************************************/ | |
3067 | static int __init edgeport_init(void) | |
3068 | { | |
3069 | int retval; | |
3070 | ||
3071 | retval = usb_serial_register(&edgeport_2port_device); | |
3072 | if (retval) | |
3073 | goto failed_2port_device_register; | |
3074 | retval = usb_serial_register(&edgeport_4port_device); | |
3075 | if (retval) | |
3076 | goto failed_4port_device_register; | |
3077 | retval = usb_serial_register(&edgeport_8port_device); | |
3078 | if (retval) | |
3079 | goto failed_8port_device_register; | |
6e8cf775 GKH |
3080 | retval = usb_serial_register(&epic_device); |
3081 | if (retval) | |
3082 | goto failed_epic_device_register; | |
1da177e4 LT |
3083 | retval = usb_register(&io_driver); |
3084 | if (retval) | |
3085 | goto failed_usb_register; | |
96c706ed | 3086 | atomic_set(&CmdUrbs, 0); |
1da177e4 LT |
3087 | info(DRIVER_DESC " " DRIVER_VERSION); |
3088 | return 0; | |
3089 | ||
3090 | failed_usb_register: | |
6e8cf775 GKH |
3091 | usb_serial_deregister(&epic_device); |
3092 | failed_epic_device_register: | |
1da177e4 LT |
3093 | usb_serial_deregister(&edgeport_8port_device); |
3094 | failed_8port_device_register: | |
3095 | usb_serial_deregister(&edgeport_4port_device); | |
3096 | failed_4port_device_register: | |
3097 | usb_serial_deregister(&edgeport_2port_device); | |
3098 | failed_2port_device_register: | |
3099 | return retval; | |
3100 | } | |
3101 | ||
3102 | ||
3103 | /**************************************************************************** | |
3104 | * edgeport_exit | |
3105 | * Called when the driver is about to be unloaded. | |
3106 | ****************************************************************************/ | |
3107 | static void __exit edgeport_exit (void) | |
3108 | { | |
3109 | usb_deregister (&io_driver); | |
3110 | usb_serial_deregister (&edgeport_2port_device); | |
3111 | usb_serial_deregister (&edgeport_4port_device); | |
3112 | usb_serial_deregister (&edgeport_8port_device); | |
6e8cf775 | 3113 | usb_serial_deregister (&epic_device); |
1da177e4 LT |
3114 | } |
3115 | ||
3116 | module_init(edgeport_init); | |
3117 | module_exit(edgeport_exit); | |
3118 | ||
3119 | /* Module information */ | |
3120 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
3121 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
3122 | MODULE_LICENSE("GPL"); | |
3123 | ||
3124 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3125 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
3126 | ||
3127 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); | |
3128 | MODULE_PARM_DESC(low_latency, "Low latency enabled or not"); |