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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * Edgeport/4 | |
14 | * Edgeport/4t | |
15 | * Edgeport/2 | |
16 | * Edgeport/4i | |
17 | * Edgeport/2i | |
18 | * Edgeport/421 | |
19 | * Edgeport/21 | |
20 | * Rapidport/4 | |
21 | * Edgeport/8 | |
22 | * Edgeport/2D8 | |
23 | * Edgeport/4D8 | |
24 | * Edgeport/8i | |
25 | * | |
26 | * For questions or problems with this driver, contact Inside Out | |
27 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
28 | * or Al Borchers <alborchers@steinerpoint.com>. | |
29 | * | |
1da177e4 LT |
30 | */ |
31 | ||
1da177e4 LT |
32 | #include <linux/kernel.h> |
33 | #include <linux/jiffies.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/tty_driver.h> | |
39 | #include <linux/tty_flip.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/serial.h> | |
43 | #include <linux/ioctl.h> | |
44 | #include <linux/wait.h> | |
5b9ea932 JS |
45 | #include <linux/firmware.h> |
46 | #include <linux/ihex.h> | |
1da177e4 LT |
47 | #include <asm/uaccess.h> |
48 | #include <linux/usb.h> | |
a969888c | 49 | #include <linux/usb/serial.h> |
1da177e4 LT |
50 | #include "io_edgeport.h" |
51 | #include "io_ionsp.h" /* info for the iosp messages */ | |
52 | #include "io_16654.h" /* 16654 UART defines */ | |
53 | ||
54 | /* | |
55 | * Version Information | |
56 | */ | |
57 | #define DRIVER_VERSION "v2.7" | |
58 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
59 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
60 | ||
1da177e4 LT |
61 | #define MAX_NAME_LEN 64 |
62 | ||
63 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
64 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
65 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
66 | ||
67 | /* receive port state */ | |
68 | enum RXSTATE { | |
69 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ | |
70 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
71 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
72 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
73 | }; | |
74 | ||
75 | ||
76 | /* Transmit Fifo | |
77 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
78 | * The maximum amount of data buffered in both the edgeport | |
79 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. | |
80 | */ | |
81 | struct TxFifo { | |
82 | unsigned int head; /* index to head pointer (write) */ | |
83 | unsigned int tail; /* index to tail pointer (read) */ | |
84 | unsigned int count; /* Bytes in queue */ | |
85 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
86 | unsigned char *fifo; /* allocated Buffer */ | |
87 | }; | |
88 | ||
89 | /* This structure holds all of the local port information */ | |
90 | struct edgeport_port { | |
91 | __u16 txCredits; /* our current credits for this port */ | |
92 | __u16 maxTxCredits; /* the max size of the port */ | |
93 | ||
94 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
95 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 96 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
97 | spinlock_t ep_lock; |
98 | ||
99 | __u8 shadowLCR; /* last LCR value received */ | |
100 | __u8 shadowMCR; /* last MCR value received */ | |
101 | __u8 shadowMSR; /* last MSR value received */ | |
102 | __u8 shadowLSR; /* last LSR value received */ | |
103 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
104 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
105 | __u8 validDataMask; | |
106 | __u32 baudRate; | |
107 | ||
cb8eaa8b RK |
108 | bool open; |
109 | bool openPending; | |
110 | bool commandPending; | |
111 | bool closePending; | |
112 | bool chaseResponsePending; | |
1da177e4 LT |
113 | |
114 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
115 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
116 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
117 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
118 | ||
119 | struct async_icount icount; | |
120 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
121 | }; | |
122 | ||
123 | ||
124 | /* This structure holds all of the individual device information */ | |
125 | struct edgeport_serial { | |
ad93375a | 126 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
127 | |
128 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
129 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
130 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
131 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
132 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
133 | |
134 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
135 | unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ | |
136 | struct urb * interrupt_read_urb; /* our interrupt urb */ | |
137 | ||
138 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
139 | unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ | |
140 | struct urb * read_urb; /* our bulk read urb */ | |
cb8eaa8b | 141 | bool read_in_progress; |
1da177e4 LT |
142 | spinlock_t es_lock; |
143 | ||
144 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
145 | ||
146 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
147 | ||
148 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
149 | __u8 rxHeader1; /* receive header byte 1 */ | |
150 | __u8 rxHeader2; /* receive header byte 2 */ | |
151 | __u8 rxHeader3; /* receive header byte 3 */ | |
152 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
153 | __u8 rxStatusCode; /* the receive status code */ | |
154 | __u8 rxStatusParam; /* the receive status paramater */ | |
155 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
156 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
157 | }; | |
158 | ||
159 | /* baud rate information */ | |
160 | struct divisor_table_entry { | |
161 | __u32 BaudRate; | |
162 | __u16 Divisor; | |
163 | }; | |
164 | ||
165 | // | |
166 | // Define table of divisors for Rev A EdgePort/4 hardware | |
167 | // These assume a 3.6864MHz crystal, the standard /16, and | |
168 | // MCR.7 = 0. | |
169 | // | |
4c4c9432 | 170 | static const struct divisor_table_entry divisor_table[] = { |
1da177e4 LT |
171 | { 50, 4608}, |
172 | { 75, 3072}, | |
173 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
174 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
175 | { 150, 1536}, | |
176 | { 300, 768}, | |
177 | { 600, 384}, | |
178 | { 1200, 192}, | |
179 | { 1800, 128}, | |
180 | { 2400, 96}, | |
181 | { 4800, 48}, | |
182 | { 7200, 32}, | |
183 | { 9600, 24}, | |
184 | { 14400, 16}, | |
185 | { 19200, 12}, | |
186 | { 38400, 6}, | |
187 | { 57600, 4}, | |
188 | { 115200, 2}, | |
189 | { 230400, 1}, | |
190 | }; | |
191 | ||
192 | /* local variables */ | |
193 | static int debug; | |
194 | ||
195 | static int low_latency = 1; /* tty low latency flag, on by default */ | |
196 | ||
96c706ed | 197 | static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */ |
1da177e4 LT |
198 | |
199 | ||
200 | /* local function prototypes */ | |
201 | ||
202 | /* function prototypes for all URB callbacks */ | |
7d12e780 DH |
203 | static void edge_interrupt_callback (struct urb *urb); |
204 | static void edge_bulk_in_callback (struct urb *urb); | |
205 | static void edge_bulk_out_data_callback (struct urb *urb); | |
206 | static void edge_bulk_out_cmd_callback (struct urb *urb); | |
1da177e4 LT |
207 | |
208 | /* function prototypes for the usbserial callbacks */ | |
209 | static int edge_open (struct usb_serial_port *port, struct file *filp); | |
210 | static void edge_close (struct usb_serial_port *port, struct file *filp); | |
211 | static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
212 | static int edge_write_room (struct usb_serial_port *port); | |
213 | static int edge_chars_in_buffer (struct usb_serial_port *port); | |
214 | static void edge_throttle (struct usb_serial_port *port); | |
215 | static void edge_unthrottle (struct usb_serial_port *port); | |
606d099c | 216 | static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); |
1da177e4 LT |
217 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg); |
218 | static void edge_break (struct usb_serial_port *port, int break_state); | |
219 | static int edge_tiocmget (struct usb_serial_port *port, struct file *file); | |
220 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); | |
221 | static int edge_startup (struct usb_serial *serial); | |
222 | static void edge_shutdown (struct usb_serial *serial); | |
223 | ||
224 | ||
225 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
226 | ||
1da177e4 LT |
227 | /* function prototypes for all of our local functions */ |
228 | static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength); | |
229 | static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3); | |
230 | static void edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length); | |
231 | static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr); | |
232 | static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data); | |
233 | static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param); | |
234 | static int calc_baud_rate_divisor (int baud_rate, int *divisor); | |
235 | static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate); | |
606d099c | 236 | static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios); |
1da177e4 LT |
237 | static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue); |
238 | static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength); | |
239 | static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port); | |
240 | ||
5b9ea932 | 241 | static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data); |
1da177e4 | 242 | static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); |
5b9ea932 | 243 | static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data); |
1da177e4 LT |
244 | static void get_manufacturing_desc (struct edgeport_serial *edge_serial); |
245 | static void get_boot_desc (struct edgeport_serial *edge_serial); | |
246 | static void load_application_firmware (struct edgeport_serial *edge_serial); | |
247 | ||
ad93375a | 248 | static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size); |
1da177e4 LT |
249 | |
250 | ||
251 | // ************************************************************************ | |
252 | // ************************************************************************ | |
253 | // ************************************************************************ | |
254 | // ************************************************************************ | |
255 | ||
256 | /************************************************************************ | |
257 | * * | |
258 | * update_edgeport_E2PROM() Compare current versions of * | |
259 | * Boot ROM and Manufacture * | |
260 | * Descriptors with versions * | |
261 | * embedded in this driver * | |
262 | * * | |
263 | ************************************************************************/ | |
264 | static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial) | |
265 | { | |
266 | __u32 BootCurVer; | |
267 | __u32 BootNewVer; | |
5b9ea932 JS |
268 | __u8 BootMajorVersion; |
269 | __u8 BootMinorVersion; | |
270 | __u16 BootBuildNumber; | |
271 | __u32 Bootaddr; | |
272 | const struct ihex_binrec *rec; | |
273 | const struct firmware *fw; | |
274 | const char *fw_name; | |
1da177e4 LT |
275 | int response; |
276 | ||
1da177e4 LT |
277 | switch (edge_serial->product_info.iDownloadFile) { |
278 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 | 279 | fw_name = "edgeport/boot.fw"; |
1da177e4 LT |
280 | break; |
281 | ||
282 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 | 283 | fw_name = "edgeport/boot2.fw"; |
1da177e4 LT |
284 | break; |
285 | ||
286 | default: | |
287 | return; | |
288 | } | |
289 | ||
5b9ea932 JS |
290 | response = request_ihex_firmware(&fw, fw_name, |
291 | &edge_serial->serial->dev->dev); | |
292 | if (response) { | |
293 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
294 | fw_name, response); | |
295 | return; | |
296 | } | |
297 | ||
298 | rec = (const struct ihex_binrec *)fw->data; | |
299 | BootMajorVersion = rec->data[0]; | |
300 | BootMinorVersion = rec->data[1]; | |
301 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
302 | ||
1da177e4 LT |
303 | // Check Boot Image Version |
304 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + | |
305 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
306 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
307 | ||
308 | BootNewVer = (BootMajorVersion << 24) + | |
309 | (BootMinorVersion << 16) + | |
5b9ea932 | 310 | BootBuildNumber; |
1da177e4 LT |
311 | |
312 | dbg("Current Boot Image version %d.%d.%d", | |
313 | edge_serial->boot_descriptor.MajorVersion, | |
314 | edge_serial->boot_descriptor.MinorVersion, | |
315 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
316 | ||
317 | ||
318 | if (BootNewVer > BootCurVer) { | |
319 | dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", | |
320 | edge_serial->boot_descriptor.MajorVersion, | |
321 | edge_serial->boot_descriptor.MinorVersion, | |
322 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 323 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 LT |
324 | |
325 | dbg("Downloading new Boot Image"); | |
326 | ||
5b9ea932 JS |
327 | for (rec = ihex_next_binrec(rec); rec; |
328 | rec = ihex_next_binrec(rec)) { | |
329 | Bootaddr = be32_to_cpu(rec->addr); | |
330 | response = rom_write(edge_serial->serial, | |
331 | Bootaddr >> 16, | |
332 | Bootaddr & 0xFFFF, | |
333 | be16_to_cpu(rec->len), | |
334 | &rec->data[0]); | |
1da177e4 | 335 | if (response < 0) { |
5b9ea932 JS |
336 | dev_err(&edge_serial->serial->dev->dev, |
337 | "rom_write failed (%x, %x, %d)\n", | |
338 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
339 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
340 | break; |
341 | } | |
342 | } | |
343 | } else { | |
344 | dbg("Boot Image -- already up to date"); | |
345 | } | |
5b9ea932 | 346 | release_firmware(fw); |
1da177e4 LT |
347 | } |
348 | ||
349 | ||
350 | /************************************************************************ | |
351 | * * | |
352 | * Get string descriptor from device * | |
353 | * * | |
354 | ************************************************************************/ | |
ad93375a | 355 | static int get_string (struct usb_device *dev, int Id, char *string, int buflen) |
1da177e4 LT |
356 | { |
357 | struct usb_string_descriptor StringDesc; | |
358 | struct usb_string_descriptor *pStringDesc; | |
359 | ||
441b62c1 | 360 | dbg("%s - USB String ID = %d", __func__, Id ); |
1da177e4 LT |
361 | |
362 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { | |
363 | return 0; | |
364 | } | |
365 | ||
366 | pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); | |
367 | ||
368 | if (!pStringDesc) { | |
369 | return 0; | |
370 | } | |
371 | ||
372 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { | |
373 | kfree(pStringDesc); | |
374 | return 0; | |
375 | } | |
376 | ||
ad93375a | 377 | unicode_to_ascii(string, buflen, pStringDesc->wData, pStringDesc->bLength/2); |
1da177e4 LT |
378 | |
379 | kfree(pStringDesc); | |
441b62c1 | 380 | dbg("%s - USB String %s", __func__, string); |
1da177e4 LT |
381 | return strlen(string); |
382 | } | |
383 | ||
384 | ||
385 | #if 0 | |
386 | /************************************************************************ | |
387 | * | |
388 | * Get string descriptor from device | |
389 | * | |
390 | ************************************************************************/ | |
391 | static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc) | |
392 | { | |
393 | struct usb_string_descriptor StringDesc; | |
394 | struct usb_string_descriptor *pStringDesc; | |
395 | ||
441b62c1 | 396 | dbg("%s - USB String ID = %d", __func__, Id ); |
1da177e4 LT |
397 | |
398 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { | |
399 | return 0; | |
400 | } | |
401 | ||
402 | pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); | |
403 | ||
404 | if (!pStringDesc) { | |
405 | return -1; | |
406 | } | |
407 | ||
408 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { | |
409 | kfree(pStringDesc); | |
410 | return -1; | |
411 | } | |
412 | ||
413 | *pRetDesc = pStringDesc; | |
414 | return 0; | |
415 | } | |
416 | #endif | |
417 | ||
6e8cf775 GKH |
418 | static void dump_product_info(struct edgeport_product_info *product_info) |
419 | { | |
420 | // Dump Product Info structure | |
421 | dbg("**Product Information:"); | |
422 | dbg(" ProductId %x", product_info->ProductId ); | |
423 | dbg(" NumPorts %d", product_info->NumPorts ); | |
424 | dbg(" ProdInfoVer %d", product_info->ProdInfoVer ); | |
425 | dbg(" IsServer %d", product_info->IsServer); | |
426 | dbg(" IsRS232 %d", product_info->IsRS232 ); | |
427 | dbg(" IsRS422 %d", product_info->IsRS422 ); | |
428 | dbg(" IsRS485 %d", product_info->IsRS485 ); | |
429 | dbg(" RomSize %d", product_info->RomSize ); | |
430 | dbg(" RamSize %d", product_info->RamSize ); | |
431 | dbg(" CpuRev %x", product_info->CpuRev ); | |
432 | dbg(" BoardRev %x", product_info->BoardRev); | |
433 | dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, | |
434 | product_info->BootMinorVersion, | |
435 | le16_to_cpu(product_info->BootBuildNumber)); | |
6e8cf775 GKH |
436 | dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0], |
437 | product_info->ManufactureDescDate[1], | |
438 | product_info->ManufactureDescDate[2]+1900); | |
439 | dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); | |
440 | dbg(" EpicVer %d", product_info->EpicVer); | |
441 | } | |
442 | ||
1da177e4 LT |
443 | static void get_product_info(struct edgeport_serial *edge_serial) |
444 | { | |
445 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
446 | ||
447 | memset (product_info, 0, sizeof(struct edgeport_product_info)); | |
448 | ||
449 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
450 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
451 | product_info->ProdInfoVer = 0; | |
452 | ||
453 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
454 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
455 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
456 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
457 | ||
458 | product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion; | |
459 | product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion; | |
460 | product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber; | |
461 | ||
462 | memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate)); | |
463 | ||
464 | // check if this is 2nd generation hardware | |
465 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) { | |
1da177e4 LT |
466 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; |
467 | } else { | |
1da177e4 LT |
468 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; |
469 | } | |
470 | ||
471 | // Determine Product type and set appropriate flags | |
472 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { | |
473 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: | |
474 | case ION_DEVICE_ID_EDGEPORT_4T: | |
475 | case ION_DEVICE_ID_EDGEPORT_4: | |
476 | case ION_DEVICE_ID_EDGEPORT_2: | |
477 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
478 | case ION_DEVICE_ID_EDGEPORT_8: | |
479 | case ION_DEVICE_ID_EDGEPORT_421: | |
480 | case ION_DEVICE_ID_EDGEPORT_21: | |
481 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
482 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
483 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
484 | product_info->IsRS232 = 1; | |
485 | break; | |
486 | ||
487 | case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485 | |
488 | product_info->IsRS422 = 1; | |
489 | product_info->IsRS485 = 1; | |
490 | break; | |
491 | ||
492 | case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422 | |
493 | case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422 | |
494 | product_info->IsRS422 = 1; | |
495 | break; | |
496 | } | |
497 | ||
6e8cf775 GKH |
498 | dump_product_info(product_info); |
499 | } | |
1da177e4 | 500 | |
6e8cf775 GKH |
501 | static int get_epic_descriptor(struct edgeport_serial *ep) |
502 | { | |
503 | int result; | |
504 | struct usb_serial *serial = ep->serial; | |
505 | struct edgeport_product_info *product_info = &ep->product_info; | |
506 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
507 | struct edge_compatibility_bits *bits; | |
508 | ||
509 | ep->is_epic = 0; | |
510 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
511 | USB_REQUEST_ION_GET_EPIC_DESC, | |
512 | 0xC0, 0x00, 0x00, | |
513 | &ep->epic_descriptor, | |
514 | sizeof(struct edge_compatibility_descriptor), | |
515 | 300); | |
516 | ||
441b62c1 | 517 | dbg("%s result = %d", __func__, result); |
6e8cf775 GKH |
518 | |
519 | if (result > 0) { | |
520 | ep->is_epic = 1; | |
521 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
522 | ||
523 | product_info->NumPorts = epic->NumPorts; | |
524 | product_info->ProdInfoVer = 0; | |
525 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
526 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
527 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
528 | product_info->iDownloadFile = epic->iDownloadFile; | |
529 | product_info->EpicVer = epic->EpicVer; | |
530 | product_info->Epic = epic->Supports; | |
531 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
532 | dump_product_info(product_info); | |
533 | ||
534 | bits = &ep->epic_descriptor.Supports; | |
535 | dbg("**EPIC descriptor:"); | |
536 | dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
537 | dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE" ); | |
538 | dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE" ); | |
539 | dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE" ); | |
540 | dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE" ); | |
541 | dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE" ); | |
542 | dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE" ); | |
543 | dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE" ); | |
544 | dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE" ); | |
545 | dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE" ); | |
546 | dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE" ); | |
547 | dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE" ); | |
548 | dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE" ); | |
549 | } | |
550 | ||
551 | return result; | |
1da177e4 LT |
552 | } |
553 | ||
554 | ||
555 | /************************************************************************/ | |
556 | /************************************************************************/ | |
557 | /* U S B C A L L B A C K F U N C T I O N S */ | |
558 | /* U S B C A L L B A C K F U N C T I O N S */ | |
559 | /************************************************************************/ | |
560 | /************************************************************************/ | |
561 | ||
562 | /***************************************************************************** | |
563 | * edge_interrupt_callback | |
564 | * this is the callback function for when we have received data on the | |
565 | * interrupt endpoint. | |
566 | *****************************************************************************/ | |
7d12e780 | 567 | static void edge_interrupt_callback (struct urb *urb) |
1da177e4 | 568 | { |
cdc97792 | 569 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
570 | struct edgeport_port *edge_port; |
571 | struct usb_serial_port *port; | |
572 | unsigned char *data = urb->transfer_buffer; | |
573 | int length = urb->actual_length; | |
574 | int bytes_avail; | |
575 | int position; | |
576 | int txCredits; | |
577 | int portNumber; | |
578 | int result; | |
2a393f5f | 579 | int status = urb->status; |
1da177e4 | 580 | |
441b62c1 | 581 | dbg("%s", __func__); |
1da177e4 | 582 | |
2a393f5f | 583 | switch (status) { |
1da177e4 LT |
584 | case 0: |
585 | /* success */ | |
586 | break; | |
587 | case -ECONNRESET: | |
588 | case -ENOENT: | |
589 | case -ESHUTDOWN: | |
590 | /* this urb is terminated, clean up */ | |
2a393f5f | 591 | dbg("%s - urb shutting down with status: %d", |
441b62c1 | 592 | __func__, status); |
1da177e4 LT |
593 | return; |
594 | default: | |
2a393f5f | 595 | dbg("%s - nonzero urb status received: %d", |
441b62c1 | 596 | __func__, status); |
1da177e4 LT |
597 | goto exit; |
598 | } | |
599 | ||
600 | // process this interrupt-read even if there are no ports open | |
601 | if (length) { | |
441b62c1 | 602 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __func__, length, data); |
1da177e4 LT |
603 | |
604 | if (length > 1) { | |
605 | bytes_avail = data[0] | (data[1] << 8); | |
606 | if (bytes_avail) { | |
607 | spin_lock(&edge_serial->es_lock); | |
608 | edge_serial->rxBytesAvail += bytes_avail; | |
441b62c1 | 609 | dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); |
1da177e4 LT |
610 | |
611 | if (edge_serial->rxBytesAvail > 0 && | |
612 | !edge_serial->read_in_progress) { | |
441b62c1 | 613 | dbg("%s - posting a read", __func__); |
cb8eaa8b | 614 | edge_serial->read_in_progress = true; |
1da177e4 LT |
615 | |
616 | /* we have pending bytes on the bulk in pipe, send a request */ | |
617 | edge_serial->read_urb->dev = edge_serial->serial->dev; | |
618 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); | |
619 | if (result) { | |
441b62c1 | 620 | dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result); |
cb8eaa8b | 621 | edge_serial->read_in_progress = false; |
1da177e4 LT |
622 | } |
623 | } | |
624 | spin_unlock(&edge_serial->es_lock); | |
625 | } | |
626 | } | |
627 | /* grab the txcredits for the ports if available */ | |
628 | position = 2; | |
629 | portNumber = 0; | |
630 | while ((position < length) && (portNumber < edge_serial->serial->num_ports)) { | |
631 | txCredits = data[position] | (data[position+1] << 8); | |
632 | if (txCredits) { | |
633 | port = edge_serial->serial->port[portNumber]; | |
634 | edge_port = usb_get_serial_port_data(port); | |
635 | if (edge_port->open) { | |
636 | spin_lock(&edge_port->ep_lock); | |
637 | edge_port->txCredits += txCredits; | |
638 | spin_unlock(&edge_port->ep_lock); | |
441b62c1 | 639 | dbg("%s - txcredits for port%d = %d", __func__, portNumber, edge_port->txCredits); |
1da177e4 LT |
640 | |
641 | /* tell the tty driver that something has changed */ | |
642 | if (edge_port->port->tty) | |
643 | tty_wakeup(edge_port->port->tty); | |
644 | ||
645 | // Since we have more credit, check if more data can be sent | |
646 | send_more_port_data(edge_serial, edge_port); | |
647 | } | |
648 | } | |
649 | position += 2; | |
650 | ++portNumber; | |
651 | } | |
652 | } | |
653 | ||
654 | exit: | |
655 | result = usb_submit_urb (urb, GFP_ATOMIC); | |
656 | if (result) { | |
441b62c1 | 657 | dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __func__, result); |
1da177e4 LT |
658 | } |
659 | } | |
660 | ||
661 | ||
662 | /***************************************************************************** | |
663 | * edge_bulk_in_callback | |
664 | * this is the callback function for when we have received data on the | |
665 | * bulk in endpoint. | |
666 | *****************************************************************************/ | |
7d12e780 | 667 | static void edge_bulk_in_callback (struct urb *urb) |
1da177e4 | 668 | { |
cdc97792 | 669 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 | 670 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 671 | int retval; |
1da177e4 | 672 | __u16 raw_data_length; |
2a393f5f | 673 | int status = urb->status; |
1da177e4 | 674 | |
441b62c1 | 675 | dbg("%s", __func__); |
1da177e4 | 676 | |
2a393f5f GKH |
677 | if (status) { |
678 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 679 | __func__, status); |
cb8eaa8b | 680 | edge_serial->read_in_progress = false; |
1da177e4 LT |
681 | return; |
682 | } | |
683 | ||
684 | if (urb->actual_length == 0) { | |
441b62c1 | 685 | dbg("%s - read bulk callback with no data", __func__); |
cb8eaa8b | 686 | edge_serial->read_in_progress = false; |
1da177e4 LT |
687 | return; |
688 | } | |
689 | ||
690 | raw_data_length = urb->actual_length; | |
691 | ||
441b62c1 | 692 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __func__, raw_data_length, data); |
1da177e4 LT |
693 | |
694 | spin_lock(&edge_serial->es_lock); | |
695 | ||
696 | /* decrement our rxBytes available by the number that we just got */ | |
697 | edge_serial->rxBytesAvail -= raw_data_length; | |
698 | ||
441b62c1 | 699 | dbg("%s - Received = %d, rxBytesAvail %d", __func__, raw_data_length, edge_serial->rxBytesAvail); |
1da177e4 LT |
700 | |
701 | process_rcvd_data (edge_serial, data, urb->actual_length); | |
702 | ||
703 | /* check to see if there's any more data for us to read */ | |
704 | if (edge_serial->rxBytesAvail > 0) { | |
441b62c1 | 705 | dbg("%s - posting a read", __func__); |
1da177e4 | 706 | edge_serial->read_urb->dev = edge_serial->serial->dev; |
2a393f5f GKH |
707 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
708 | if (retval) { | |
709 | dev_err(&urb->dev->dev, | |
710 | "%s - usb_submit_urb(read bulk) failed, " | |
441b62c1 | 711 | "retval = %d\n", __func__, retval); |
cb8eaa8b | 712 | edge_serial->read_in_progress = false; |
1da177e4 LT |
713 | } |
714 | } else { | |
cb8eaa8b | 715 | edge_serial->read_in_progress = false; |
1da177e4 LT |
716 | } |
717 | ||
718 | spin_unlock(&edge_serial->es_lock); | |
719 | } | |
720 | ||
721 | ||
722 | /***************************************************************************** | |
723 | * edge_bulk_out_data_callback | |
724 | * this is the callback function for when we have finished sending serial data | |
725 | * on the bulk out endpoint. | |
726 | *****************************************************************************/ | |
7d12e780 | 727 | static void edge_bulk_out_data_callback (struct urb *urb) |
1da177e4 | 728 | { |
cdc97792 | 729 | struct edgeport_port *edge_port = urb->context; |
1da177e4 | 730 | struct tty_struct *tty; |
2a393f5f | 731 | int status = urb->status; |
1da177e4 | 732 | |
441b62c1 | 733 | dbg("%s", __func__); |
1da177e4 | 734 | |
2a393f5f GKH |
735 | if (status) { |
736 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 737 | __func__, status); |
1da177e4 LT |
738 | } |
739 | ||
740 | tty = edge_port->port->tty; | |
741 | ||
742 | if (tty && edge_port->open) { | |
743 | /* let the tty driver wakeup if it has a special write_wakeup function */ | |
744 | tty_wakeup(tty); | |
745 | } | |
746 | ||
747 | // Release the Write URB | |
cb8eaa8b | 748 | edge_port->write_in_progress = false; |
1da177e4 LT |
749 | |
750 | // Check if more data needs to be sent | |
751 | send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port); | |
752 | } | |
753 | ||
754 | ||
755 | /***************************************************************************** | |
756 | * BulkOutCmdCallback | |
757 | * this is the callback function for when we have finished sending a command | |
758 | * on the bulk out endpoint. | |
759 | *****************************************************************************/ | |
7d12e780 | 760 | static void edge_bulk_out_cmd_callback (struct urb *urb) |
1da177e4 | 761 | { |
cdc97792 | 762 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
763 | struct tty_struct *tty; |
764 | int status = urb->status; | |
765 | ||
441b62c1 | 766 | dbg("%s", __func__); |
1da177e4 | 767 | |
96c706ed | 768 | atomic_dec(&CmdUrbs); |
441b62c1 | 769 | dbg("%s - FREE URB %p (outstanding %d)", __func__, urb, atomic_read(&CmdUrbs)); |
1da177e4 LT |
770 | |
771 | ||
772 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 773 | kfree(urb->transfer_buffer); |
1da177e4 LT |
774 | |
775 | /* Free the command urb */ | |
776 | usb_free_urb (urb); | |
777 | ||
778 | if (status) { | |
441b62c1 | 779 | dbg("%s - nonzero write bulk status received: %d", __func__, status); |
1da177e4 LT |
780 | return; |
781 | } | |
782 | ||
783 | /* Get pointer to tty */ | |
784 | tty = edge_port->port->tty; | |
785 | ||
786 | /* tell the tty driver that something has changed */ | |
787 | if (tty && edge_port->open) | |
788 | tty_wakeup(tty); | |
789 | ||
790 | /* we have completed the command */ | |
cb8eaa8b | 791 | edge_port->commandPending = false; |
1da177e4 LT |
792 | wake_up(&edge_port->wait_command); |
793 | } | |
794 | ||
795 | ||
796 | /***************************************************************************** | |
797 | * Driver tty interface functions | |
798 | *****************************************************************************/ | |
799 | ||
800 | /***************************************************************************** | |
801 | * SerialOpen | |
802 | * this function is called by the tty driver when a port is opened | |
803 | * If successful, we return 0 | |
804 | * Otherwise we return a negative error number. | |
805 | *****************************************************************************/ | |
806 | static int edge_open (struct usb_serial_port *port, struct file * filp) | |
807 | { | |
808 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
809 | struct usb_serial *serial; | |
810 | struct edgeport_serial *edge_serial; | |
811 | int response; | |
812 | ||
441b62c1 | 813 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
814 | |
815 | if (edge_port == NULL) | |
816 | return -ENODEV; | |
817 | ||
818 | if (port->tty) | |
819 | port->tty->low_latency = low_latency; | |
820 | ||
821 | /* see if we've set up our endpoint info yet (can't set it up in edge_startup | |
822 | as the structures were not set up at that time.) */ | |
823 | serial = port->serial; | |
824 | edge_serial = usb_get_serial_data(serial); | |
825 | if (edge_serial == NULL) { | |
826 | return -ENODEV; | |
827 | } | |
828 | if (edge_serial->interrupt_in_buffer == NULL) { | |
829 | struct usb_serial_port *port0 = serial->port[0]; | |
830 | ||
831 | /* not set up yet, so do it now */ | |
832 | edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer; | |
833 | edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress; | |
834 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; | |
835 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
836 | edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress; | |
837 | edge_serial->read_urb = port0->read_urb; | |
838 | edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress; | |
839 | ||
840 | /* set up our interrupt urb */ | |
841 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
842 | serial->dev, | |
843 | usb_rcvintpipe(serial->dev, | |
844 | port0->interrupt_in_endpointAddress), | |
845 | port0->interrupt_in_buffer, | |
846 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
847 | edge_interrupt_callback, edge_serial, | |
848 | edge_serial->interrupt_read_urb->interval); | |
849 | ||
850 | /* set up our bulk in urb */ | |
851 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
852 | usb_rcvbulkpipe(serial->dev, | |
853 | port0->bulk_in_endpointAddress), | |
854 | port0->bulk_in_buffer, | |
855 | edge_serial->read_urb->transfer_buffer_length, | |
856 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 857 | edge_serial->read_in_progress = false; |
1da177e4 LT |
858 | |
859 | /* start interrupt read for this edgeport | |
860 | * this interrupt will continue as long as the edgeport is connected */ | |
861 | response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL); | |
862 | if (response) { | |
441b62c1 | 863 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", __func__, response); |
1da177e4 LT |
864 | } |
865 | } | |
866 | ||
867 | /* initialize our wait queues */ | |
868 | init_waitqueue_head(&edge_port->wait_open); | |
869 | init_waitqueue_head(&edge_port->wait_chase); | |
870 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
871 | init_waitqueue_head(&edge_port->wait_command); | |
872 | ||
873 | /* initialize our icount structure */ | |
874 | memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount)); | |
875 | ||
876 | /* initialize our port settings */ | |
877 | edge_port->txCredits = 0; /* Can't send any data yet */ | |
878 | edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */ | |
cb8eaa8b | 879 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
880 | |
881 | /* send a open port command */ | |
cb8eaa8b RK |
882 | edge_port->openPending = true; |
883 | edge_port->open = false; | |
1da177e4 LT |
884 | response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0); |
885 | ||
886 | if (response < 0) { | |
441b62c1 | 887 | dev_err(&port->dev, "%s - error sending open port command\n", __func__); |
cb8eaa8b | 888 | edge_port->openPending = false; |
1da177e4 LT |
889 | return -ENODEV; |
890 | } | |
891 | ||
892 | /* now wait for the port to be completely opened */ | |
cb8eaa8b | 893 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, OPEN_TIMEOUT); |
1da177e4 | 894 | |
cb8eaa8b | 895 | if (!edge_port->open) { |
1da177e4 | 896 | /* open timed out */ |
441b62c1 | 897 | dbg("%s - open timedout", __func__); |
cb8eaa8b | 898 | edge_port->openPending = false; |
1da177e4 LT |
899 | return -ENODEV; |
900 | } | |
901 | ||
902 | /* create the txfifo */ | |
903 | edge_port->txfifo.head = 0; | |
904 | edge_port->txfifo.tail = 0; | |
905 | edge_port->txfifo.count = 0; | |
906 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
907 | edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL); | |
908 | ||
909 | if (!edge_port->txfifo.fifo) { | |
441b62c1 | 910 | dbg("%s - no memory", __func__); |
1da177e4 LT |
911 | edge_close (port, filp); |
912 | return -ENOMEM; | |
913 | } | |
914 | ||
915 | /* Allocate a URB for the write */ | |
916 | edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL); | |
cb8eaa8b | 917 | edge_port->write_in_progress = false; |
1da177e4 LT |
918 | |
919 | if (!edge_port->write_urb) { | |
441b62c1 | 920 | dbg("%s - no memory", __func__); |
1da177e4 LT |
921 | edge_close (port, filp); |
922 | return -ENOMEM; | |
923 | } | |
924 | ||
441b62c1 | 925 | dbg("%s(%d) - Initialize TX fifo to %d bytes", __func__, port->number, edge_port->maxTxCredits); |
1da177e4 | 926 | |
441b62c1 | 927 | dbg("%s exited", __func__); |
1da177e4 LT |
928 | |
929 | return 0; | |
930 | } | |
931 | ||
932 | ||
933 | /************************************************************************ | |
934 | * | |
935 | * block_until_chase_response | |
936 | * | |
937 | * This function will block the close until one of the following: | |
938 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 939 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
940 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
941 | * | |
942 | ************************************************************************/ | |
943 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
944 | { | |
945 | DEFINE_WAIT(wait); | |
946 | __u16 lastCredits; | |
947 | int timeout = 1*HZ; | |
948 | int loop = 10; | |
949 | ||
950 | while (1) { | |
951 | // Save Last credits | |
952 | lastCredits = edge_port->txCredits; | |
953 | ||
954 | // Did we get our Chase response | |
cb8eaa8b | 955 | if (!edge_port->chaseResponsePending) { |
441b62c1 | 956 | dbg("%s - Got Chase Response", __func__); |
1da177e4 LT |
957 | |
958 | // did we get all of our credit back? | |
959 | if (edge_port->txCredits == edge_port->maxTxCredits ) { | |
441b62c1 | 960 | dbg("%s - Got all credits", __func__); |
1da177e4 LT |
961 | return; |
962 | } | |
963 | } | |
964 | ||
965 | // Block the thread for a while | |
966 | prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); | |
967 | schedule_timeout(timeout); | |
968 | finish_wait(&edge_port->wait_chase, &wait); | |
969 | ||
970 | if (lastCredits == edge_port->txCredits) { | |
971 | // No activity.. count down. | |
972 | loop--; | |
973 | if (loop == 0) { | |
cb8eaa8b | 974 | edge_port->chaseResponsePending = false; |
441b62c1 | 975 | dbg("%s - Chase TIMEOUT", __func__); |
1da177e4 LT |
976 | return; |
977 | } | |
978 | } else { | |
dc0d5c1e | 979 | // Reset timeout value back to 10 seconds |
441b62c1 | 980 | dbg("%s - Last %d, Current %d", __func__, lastCredits, edge_port->txCredits); |
1da177e4 LT |
981 | loop = 10; |
982 | } | |
983 | } | |
984 | } | |
985 | ||
986 | ||
987 | /************************************************************************ | |
988 | * | |
989 | * block_until_tx_empty | |
990 | * | |
991 | * This function will block the close until one of the following: | |
992 | * 1. TX count are 0 | |
993 | * 2. The edgeport has stopped | |
dc0d5c1e | 994 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
995 | * |
996 | ************************************************************************/ | |
997 | static void block_until_tx_empty (struct edgeport_port *edge_port) | |
998 | { | |
999 | DEFINE_WAIT(wait); | |
1000 | struct TxFifo *fifo = &edge_port->txfifo; | |
1001 | __u32 lastCount; | |
1002 | int timeout = HZ/10; | |
1003 | int loop = 30; | |
1004 | ||
1005 | while (1) { | |
1006 | // Save Last count | |
1007 | lastCount = fifo->count; | |
1008 | ||
1009 | // Is the Edgeport Buffer empty? | |
1010 | if (lastCount == 0) { | |
441b62c1 | 1011 | dbg("%s - TX Buffer Empty", __func__); |
1da177e4 LT |
1012 | return; |
1013 | } | |
1014 | ||
1015 | // Block the thread for a while | |
1016 | prepare_to_wait (&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); | |
1017 | schedule_timeout(timeout); | |
1018 | finish_wait(&edge_port->wait_chase, &wait); | |
1019 | ||
441b62c1 | 1020 | dbg("%s wait", __func__); |
1da177e4 LT |
1021 | |
1022 | if (lastCount == fifo->count) { | |
1023 | // No activity.. count down. | |
1024 | loop--; | |
1025 | if (loop == 0) { | |
441b62c1 | 1026 | dbg("%s - TIMEOUT", __func__); |
1da177e4 LT |
1027 | return; |
1028 | } | |
1029 | } else { | |
dc0d5c1e | 1030 | // Reset timeout value back to seconds |
1da177e4 LT |
1031 | loop = 30; |
1032 | } | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | ||
1037 | /***************************************************************************** | |
1038 | * edge_close | |
1039 | * this function is called by the tty driver when a port is closed | |
1040 | *****************************************************************************/ | |
1041 | static void edge_close (struct usb_serial_port *port, struct file * filp) | |
1042 | { | |
1043 | struct edgeport_serial *edge_serial; | |
1044 | struct edgeport_port *edge_port; | |
1045 | int status; | |
1046 | ||
441b62c1 | 1047 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1048 | |
1049 | edge_serial = usb_get_serial_data(port->serial); | |
1050 | edge_port = usb_get_serial_port_data(port); | |
1051 | if ((edge_serial == NULL) || (edge_port == NULL)) | |
1052 | return; | |
1053 | ||
1054 | // block until tx is empty | |
1055 | block_until_tx_empty(edge_port); | |
1056 | ||
cb8eaa8b | 1057 | edge_port->closePending = true; |
1da177e4 | 1058 | |
6e8cf775 GKH |
1059 | if ((!edge_serial->is_epic) || |
1060 | ((edge_serial->is_epic) && | |
1061 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1062 | /* flush and chase */ | |
cb8eaa8b | 1063 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1064 | |
441b62c1 | 1065 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
6e8cf775 GKH |
1066 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); |
1067 | if (status == 0) { | |
1068 | // block until chase finished | |
1069 | block_until_chase_response(edge_port); | |
1070 | } else { | |
cb8eaa8b | 1071 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1072 | } |
1da177e4 LT |
1073 | } |
1074 | ||
6e8cf775 GKH |
1075 | if ((!edge_serial->is_epic) || |
1076 | ((edge_serial->is_epic) && | |
1077 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1078 | /* close the port */ | |
441b62c1 | 1079 | dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__); |
6e8cf775 GKH |
1080 | send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0); |
1081 | } | |
1da177e4 | 1082 | |
cb8eaa8b RK |
1083 | //port->close = true; |
1084 | edge_port->closePending = false; | |
1085 | edge_port->open = false; | |
1086 | edge_port->openPending = false; | |
1da177e4 | 1087 | |
9a25f44f | 1088 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1089 | |
1090 | if (edge_port->write_urb) { | |
1091 | /* if this urb had a transfer buffer already (old transfer) free it */ | |
1bc3c9e1 JJ |
1092 | kfree(edge_port->write_urb->transfer_buffer); |
1093 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1094 | edge_port->write_urb = NULL; |
1095 | } | |
1bc3c9e1 JJ |
1096 | kfree(edge_port->txfifo.fifo); |
1097 | edge_port->txfifo.fifo = NULL; | |
1da177e4 | 1098 | |
441b62c1 | 1099 | dbg("%s exited", __func__); |
1da177e4 LT |
1100 | } |
1101 | ||
1102 | /***************************************************************************** | |
1103 | * SerialWrite | |
1104 | * this function is called by the tty driver when data should be written to | |
1105 | * the port. | |
1106 | * If successful, we return the number of bytes written, otherwise we return | |
1107 | * a negative error number. | |
1108 | *****************************************************************************/ | |
1109 | static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count) | |
1110 | { | |
1111 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1112 | struct TxFifo *fifo; | |
1113 | int copySize; | |
1114 | int bytesleft; | |
1115 | int firsthalf; | |
1116 | int secondhalf; | |
1117 | unsigned long flags; | |
1118 | ||
441b62c1 | 1119 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1120 | |
1121 | if (edge_port == NULL) | |
1122 | return -ENODEV; | |
1123 | ||
1124 | // get a pointer to the Tx fifo | |
1125 | fifo = &edge_port->txfifo; | |
1126 | ||
1127 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1128 | ||
1129 | // calculate number of bytes to put in fifo | |
1130 | copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count)); | |
1131 | ||
441b62c1 | 1132 | dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __func__, |
1da177e4 LT |
1133 | port->number, count, edge_port->txCredits - fifo->count, copySize); |
1134 | ||
1135 | /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */ | |
1136 | if (copySize == 0) { | |
441b62c1 | 1137 | dbg("%s - copySize = Zero", __func__); |
1da177e4 LT |
1138 | goto finish_write; |
1139 | } | |
1140 | ||
1141 | // queue the data | |
1142 | // since we can never overflow the buffer we do not have to check for full condition | |
1143 | ||
1144 | // the copy is done is two parts -- first fill to the end of the buffer | |
1145 | // then copy the reset from the start of the buffer | |
1146 | ||
1147 | bytesleft = fifo->size - fifo->head; | |
1148 | firsthalf = min (bytesleft, copySize); | |
441b62c1 | 1149 | dbg("%s - copy %d bytes of %d into fifo ", __func__, firsthalf, bytesleft); |
1da177e4 LT |
1150 | |
1151 | /* now copy our data */ | |
1152 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
441b62c1 | 1153 | usb_serial_debug_data(debug, &port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); |
1da177e4 LT |
1154 | |
1155 | // update the index and size | |
1156 | fifo->head += firsthalf; | |
1157 | fifo->count += firsthalf; | |
1158 | ||
1159 | // wrap the index | |
1160 | if (fifo->head == fifo->size) { | |
1161 | fifo->head = 0; | |
1162 | } | |
1163 | ||
1164 | secondhalf = copySize-firsthalf; | |
1165 | ||
1166 | if (secondhalf) { | |
441b62c1 | 1167 | dbg("%s - copy rest of data %d", __func__, secondhalf); |
1da177e4 | 1168 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
441b62c1 | 1169 | usb_serial_debug_data(debug, &port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); |
1da177e4 LT |
1170 | // update the index and size |
1171 | fifo->count += secondhalf; | |
1172 | fifo->head += secondhalf; | |
1173 | // No need to check for wrap since we can not get to end of fifo in this part | |
1174 | } | |
1175 | ||
1176 | finish_write: | |
1177 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1178 | ||
1179 | send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port); | |
1180 | ||
441b62c1 | 1181 | dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__, copySize, edge_port->txCredits, fifo->count); |
1da177e4 LT |
1182 | |
1183 | return copySize; | |
1184 | } | |
1185 | ||
1186 | ||
1187 | /************************************************************************ | |
1188 | * | |
1189 | * send_more_port_data() | |
1190 | * | |
1191 | * This routine attempts to write additional UART transmit data | |
1192 | * to a port over the USB bulk pipe. It is called (1) when new | |
1193 | * data has been written to a port's TxBuffer from higher layers | |
1194 | * (2) when the peripheral sends us additional TxCredits indicating | |
1195 | * that it can accept more Tx data for a given port; and (3) when | |
1196 | * a bulk write completes successfully and we want to see if we | |
1197 | * can transmit more. | |
1198 | * | |
1199 | ************************************************************************/ | |
1200 | static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port) | |
1201 | { | |
1202 | struct TxFifo *fifo = &edge_port->txfifo; | |
1203 | struct urb *urb; | |
1204 | unsigned char *buffer; | |
1205 | int status; | |
1206 | int count; | |
1207 | int bytesleft; | |
1208 | int firsthalf; | |
1209 | int secondhalf; | |
1210 | unsigned long flags; | |
1211 | ||
441b62c1 | 1212 | dbg("%s(%d)", __func__, edge_port->port->number); |
1da177e4 LT |
1213 | |
1214 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1215 | ||
1216 | if (edge_port->write_in_progress || | |
1217 | !edge_port->open || | |
1218 | (fifo->count == 0)) { | |
441b62c1 | 1219 | dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __func__, edge_port->port->number, fifo->count, edge_port->write_in_progress); |
1da177e4 LT |
1220 | goto exit_send; |
1221 | } | |
1222 | ||
1223 | // since the amount of data in the fifo will always fit into the | |
1224 | // edgeport buffer we do not need to check the write length | |
1225 | ||
1226 | // Do we have enough credits for this port to make it worthwhile | |
1227 | // to bother queueing a write. If it's too small, say a few bytes, | |
1228 | // it's better to wait for more credits so we can do a larger | |
1229 | // write. | |
1230 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
441b62c1 | 1231 | dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __func__, edge_port->port->number, fifo->count, edge_port->txCredits ); |
1da177e4 LT |
1232 | goto exit_send; |
1233 | } | |
1234 | ||
1235 | // lock this write | |
cb8eaa8b | 1236 | edge_port->write_in_progress = true; |
1da177e4 LT |
1237 | |
1238 | // get a pointer to the write_urb | |
1239 | urb = edge_port->write_urb; | |
1240 | ||
1bc3c9e1 JJ |
1241 | /* make sure transfer buffer is freed */ |
1242 | kfree(urb->transfer_buffer); | |
1243 | urb->transfer_buffer = NULL; | |
1da177e4 LT |
1244 | |
1245 | /* build the data header for the buffer and port that we are about to send out */ | |
1246 | count = fifo->count; | |
1247 | buffer = kmalloc (count+2, GFP_ATOMIC); | |
1248 | if (buffer == NULL) { | |
441b62c1 | 1249 | dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __func__); |
cb8eaa8b | 1250 | edge_port->write_in_progress = false; |
1da177e4 LT |
1251 | goto exit_send; |
1252 | } | |
1253 | buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count); | |
1254 | buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count); | |
1255 | ||
1256 | /* now copy our data */ | |
1257 | bytesleft = fifo->size - fifo->tail; | |
1258 | firsthalf = min (bytesleft, count); | |
1259 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); | |
1260 | fifo->tail += firsthalf; | |
1261 | fifo->count -= firsthalf; | |
1262 | if (fifo->tail == fifo->size) { | |
1263 | fifo->tail = 0; | |
1264 | } | |
1265 | ||
1266 | secondhalf = count-firsthalf; | |
1267 | if (secondhalf) { | |
1268 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf); | |
1269 | fifo->tail += secondhalf; | |
1270 | fifo->count -= secondhalf; | |
1271 | } | |
1272 | ||
1273 | if (count) | |
441b62c1 | 1274 | usb_serial_debug_data(debug, &edge_port->port->dev, __func__, count, &buffer[2]); |
1da177e4 LT |
1275 | |
1276 | /* fill up the urb with all of our data and submit it */ | |
1277 | usb_fill_bulk_urb (urb, edge_serial->serial->dev, | |
1278 | usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), | |
1279 | buffer, count+2, edge_bulk_out_data_callback, edge_port); | |
1280 | ||
1281 | /* decrement the number of credits we have by the number we just sent */ | |
1282 | edge_port->txCredits -= count; | |
1283 | edge_port->icount.tx += count; | |
1284 | ||
1285 | urb->dev = edge_serial->serial->dev; | |
1286 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1287 | if (status) { | |
1288 | /* something went wrong */ | |
441b62c1 | 1289 | dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __func__, status); |
cb8eaa8b | 1290 | edge_port->write_in_progress = false; |
1da177e4 LT |
1291 | |
1292 | /* revert the credits as something bad happened. */ | |
1293 | edge_port->txCredits += count; | |
1294 | edge_port->icount.tx -= count; | |
1295 | } | |
441b62c1 | 1296 | dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __func__, count, edge_port->txCredits, fifo->count); |
1da177e4 LT |
1297 | |
1298 | exit_send: | |
1299 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1300 | } | |
1301 | ||
1302 | ||
1303 | /***************************************************************************** | |
1304 | * edge_write_room | |
1305 | * this function is called by the tty driver when it wants to know how many | |
1306 | * bytes of data we can accept for a specific port. | |
1307 | * If successful, we return the amount of room that we have for this port | |
1308 | * (the txCredits), | |
1309 | * Otherwise we return a negative error number. | |
1310 | *****************************************************************************/ | |
1311 | static int edge_write_room (struct usb_serial_port *port) | |
1312 | { | |
1313 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1314 | int room; | |
1315 | unsigned long flags; | |
1316 | ||
441b62c1 | 1317 | dbg("%s", __func__); |
1da177e4 LT |
1318 | |
1319 | if (edge_port == NULL) | |
1320 | return -ENODEV; | |
cb8eaa8b | 1321 | if (edge_port->closePending) |
1da177e4 LT |
1322 | return -ENODEV; |
1323 | ||
441b62c1 | 1324 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1325 | |
1326 | if (!edge_port->open) { | |
441b62c1 | 1327 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1328 | return -EINVAL; |
1329 | } | |
1330 | ||
1331 | // total of both buffers is still txCredit | |
1332 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1333 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1334 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1335 | ||
441b62c1 | 1336 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
1337 | return room; |
1338 | } | |
1339 | ||
1340 | ||
1341 | /***************************************************************************** | |
1342 | * edge_chars_in_buffer | |
1343 | * this function is called by the tty driver when it wants to know how many | |
1344 | * bytes of data we currently have outstanding in the port (data that has | |
1345 | * been written, but hasn't made it out the port yet) | |
1346 | * If successful, we return the number of bytes left to be written in the | |
1347 | * system, | |
1348 | * Otherwise we return a negative error number. | |
1349 | *****************************************************************************/ | |
1350 | static int edge_chars_in_buffer (struct usb_serial_port *port) | |
1351 | { | |
1352 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1353 | int num_chars; | |
1354 | unsigned long flags; | |
1355 | ||
441b62c1 | 1356 | dbg("%s", __func__); |
1da177e4 LT |
1357 | |
1358 | if (edge_port == NULL) | |
1359 | return -ENODEV; | |
cb8eaa8b | 1360 | if (edge_port->closePending) |
1da177e4 LT |
1361 | return -ENODEV; |
1362 | ||
1363 | if (!edge_port->open) { | |
441b62c1 | 1364 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1365 | return -EINVAL; |
1366 | } | |
1367 | ||
1368 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1369 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count; | |
1370 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1371 | if (num_chars) { | |
441b62c1 | 1372 | dbg("%s(port %d) - returns %d", __func__, port->number, num_chars); |
1da177e4 LT |
1373 | } |
1374 | ||
1375 | return num_chars; | |
1376 | } | |
1377 | ||
1378 | ||
1379 | /***************************************************************************** | |
1380 | * SerialThrottle | |
1381 | * this function is called by the tty driver when it wants to stop the data | |
1382 | * being read from the port. | |
1383 | *****************************************************************************/ | |
1384 | static void edge_throttle (struct usb_serial_port *port) | |
1385 | { | |
1386 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1387 | struct tty_struct *tty; | |
1388 | int status; | |
1389 | ||
441b62c1 | 1390 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1391 | |
1392 | if (edge_port == NULL) | |
1393 | return; | |
1394 | ||
1395 | if (!edge_port->open) { | |
441b62c1 | 1396 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1397 | return; |
1398 | } | |
1399 | ||
1400 | tty = port->tty; | |
1401 | if (!tty) { | |
441b62c1 | 1402 | dbg ("%s - no tty available", __func__); |
1da177e4 LT |
1403 | return; |
1404 | } | |
1405 | ||
1406 | /* if we are implementing XON/XOFF, send the stop character */ | |
1407 | if (I_IXOFF(tty)) { | |
1408 | unsigned char stop_char = STOP_CHAR(tty); | |
1409 | status = edge_write (port, &stop_char, 1); | |
1410 | if (status <= 0) { | |
1411 | return; | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | /* if we are implementing RTS/CTS, toggle that line */ | |
1416 | if (tty->termios->c_cflag & CRTSCTS) { | |
1417 | edge_port->shadowMCR &= ~MCR_RTS; | |
1418 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1419 | if (status != 0) { | |
1420 | return; | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | return; | |
1425 | } | |
1426 | ||
1427 | ||
1428 | /***************************************************************************** | |
1429 | * edge_unthrottle | |
1430 | * this function is called by the tty driver when it wants to resume the data | |
1431 | * being read from the port (called after SerialThrottle is called) | |
1432 | *****************************************************************************/ | |
1433 | static void edge_unthrottle (struct usb_serial_port *port) | |
1434 | { | |
1435 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1436 | struct tty_struct *tty; | |
1437 | int status; | |
1438 | ||
441b62c1 | 1439 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1440 | |
1441 | if (edge_port == NULL) | |
1442 | return; | |
1443 | ||
1444 | if (!edge_port->open) { | |
441b62c1 | 1445 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1446 | return; |
1447 | } | |
1448 | ||
1449 | tty = port->tty; | |
1450 | if (!tty) { | |
441b62c1 | 1451 | dbg ("%s - no tty available", __func__); |
1da177e4 LT |
1452 | return; |
1453 | } | |
1454 | ||
1455 | /* if we are implementing XON/XOFF, send the start character */ | |
1456 | if (I_IXOFF(tty)) { | |
1457 | unsigned char start_char = START_CHAR(tty); | |
1458 | status = edge_write (port, &start_char, 1); | |
1459 | if (status <= 0) { | |
1460 | return; | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | /* if we are implementing RTS/CTS, toggle that line */ | |
1465 | if (tty->termios->c_cflag & CRTSCTS) { | |
1466 | edge_port->shadowMCR |= MCR_RTS; | |
1467 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1468 | if (status != 0) { | |
1469 | return; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | return; | |
1474 | } | |
1475 | ||
1476 | ||
1477 | /***************************************************************************** | |
1478 | * SerialSetTermios | |
1479 | * this function is called by the tty driver when it wants to change the termios structure | |
1480 | *****************************************************************************/ | |
606d099c | 1481 | static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 | 1482 | { |
6ce073bd | 1483 | /* FIXME: This function appears unused ?? */ |
1da177e4 LT |
1484 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1485 | struct tty_struct *tty = port->tty; | |
1486 | unsigned int cflag; | |
1487 | ||
1da177e4 | 1488 | cflag = tty->termios->c_cflag; |
441b62c1 | 1489 | dbg("%s - clfag %08x iflag %08x", __func__, |
1da177e4 | 1490 | tty->termios->c_cflag, tty->termios->c_iflag); |
441b62c1 | 1491 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
6ce073bd | 1492 | old_termios->c_cflag, old_termios->c_iflag); |
1da177e4 | 1493 | |
441b62c1 | 1494 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1495 | |
1496 | if (edge_port == NULL) | |
1497 | return; | |
1498 | ||
1499 | if (!edge_port->open) { | |
441b62c1 | 1500 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1501 | return; |
1502 | } | |
1503 | ||
1504 | /* change the port settings to the new ones specified */ | |
1505 | change_port_settings (edge_port, old_termios); | |
1506 | ||
1507 | return; | |
1508 | } | |
1509 | ||
1510 | ||
1511 | /***************************************************************************** | |
1512 | * get_lsr_info - get line status register info | |
1513 | * | |
1514 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1515 | * is emptied. On bus types like RS485, the transmitter must | |
1516 | * release the bus after transmitting. This must be done when | |
1517 | * the transmit shift register is empty, not be done when the | |
1518 | * transmit holding register is empty. This functionality | |
1519 | * allows an RS485 driver to be written in user space. | |
1520 | *****************************************************************************/ | |
1521 | static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value) | |
1522 | { | |
1523 | unsigned int result = 0; | |
1524 | unsigned long flags; | |
1525 | ||
1526 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1527 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1528 | edge_port->txfifo.count == 0) { | |
441b62c1 | 1529 | dbg("%s -- Empty", __func__); |
1da177e4 LT |
1530 | result = TIOCSER_TEMT; |
1531 | } | |
1532 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1533 | ||
1534 | if (copy_to_user(value, &result, sizeof(int))) | |
1535 | return -EFAULT; | |
1536 | return 0; | |
1537 | } | |
1538 | ||
1539 | static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value) | |
1540 | { | |
1541 | unsigned int result = 0; | |
1542 | struct tty_struct *tty = edge_port->port->tty; | |
1543 | ||
1544 | if (!tty) | |
1545 | return -ENOIOCTLCMD; | |
1546 | ||
1547 | result = tty->read_cnt; | |
1548 | ||
441b62c1 | 1549 | dbg("%s(%d) = %d", __func__, edge_port->port->number, result); |
1da177e4 LT |
1550 | if (copy_to_user(value, &result, sizeof(int))) |
1551 | return -EFAULT; | |
1552 | //return 0; | |
1553 | return -ENOIOCTLCMD; | |
1554 | } | |
1555 | ||
1556 | static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) | |
1557 | { | |
1558 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1559 | unsigned int mcr; | |
1560 | ||
441b62c1 | 1561 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1562 | |
1563 | mcr = edge_port->shadowMCR; | |
1564 | if (set & TIOCM_RTS) | |
1565 | mcr |= MCR_RTS; | |
1566 | if (set & TIOCM_DTR) | |
1567 | mcr |= MCR_DTR; | |
1568 | if (set & TIOCM_LOOP) | |
1569 | mcr |= MCR_LOOPBACK; | |
1570 | ||
1571 | if (clear & TIOCM_RTS) | |
1572 | mcr &= ~MCR_RTS; | |
1573 | if (clear & TIOCM_DTR) | |
1574 | mcr &= ~MCR_DTR; | |
1575 | if (clear & TIOCM_LOOP) | |
1576 | mcr &= ~MCR_LOOPBACK; | |
1577 | ||
1578 | edge_port->shadowMCR = mcr; | |
1579 | ||
1580 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1581 | ||
1582 | return 0; | |
1583 | } | |
1584 | ||
1585 | static int edge_tiocmget(struct usb_serial_port *port, struct file *file) | |
1586 | { | |
1587 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1588 | unsigned int result = 0; | |
1589 | unsigned int msr; | |
1590 | unsigned int mcr; | |
1591 | ||
441b62c1 | 1592 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1593 | |
1594 | msr = edge_port->shadowMSR; | |
1595 | mcr = edge_port->shadowMCR; | |
1596 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1597 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1598 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1599 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1600 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1601 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1602 | ||
1603 | ||
441b62c1 | 1604 | dbg("%s -- %x", __func__, result); |
1da177e4 LT |
1605 | |
1606 | return result; | |
1607 | } | |
1608 | ||
1609 | static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) | |
1610 | { | |
1611 | struct serial_struct tmp; | |
1612 | ||
1613 | if (!retinfo) | |
1614 | return -EFAULT; | |
1615 | ||
1616 | memset(&tmp, 0, sizeof(tmp)); | |
1617 | ||
1618 | tmp.type = PORT_16550A; | |
1619 | tmp.line = edge_port->port->serial->minor; | |
1620 | tmp.port = edge_port->port->number; | |
1621 | tmp.irq = 0; | |
1622 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1623 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1624 | tmp.baud_base = 9600; | |
1625 | tmp.close_delay = 5*HZ; | |
1626 | tmp.closing_wait = 30*HZ; | |
1627 | // tmp.custom_divisor = state->custom_divisor; | |
1628 | // tmp.hub6 = state->hub6; | |
1629 | // tmp.io_type = state->io_type; | |
1630 | ||
1631 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1632 | return -EFAULT; | |
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | ||
1637 | ||
1638 | /***************************************************************************** | |
1639 | * SerialIoctl | |
1640 | * this function handles any ioctl calls to the driver | |
1641 | *****************************************************************************/ | |
1642 | static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) | |
1643 | { | |
1644 | DEFINE_WAIT(wait); | |
1645 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1646 | struct async_icount cnow; | |
1647 | struct async_icount cprev; | |
1648 | struct serial_icounter_struct icount; | |
1649 | ||
441b62c1 | 1650 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
1651 | |
1652 | switch (cmd) { | |
1653 | // return number of bytes available | |
1654 | case TIOCINQ: | |
441b62c1 | 1655 | dbg("%s (%d) TIOCINQ", __func__, port->number); |
1da177e4 LT |
1656 | return get_number_bytes_avail(edge_port, (unsigned int __user *) arg); |
1657 | break; | |
1658 | ||
1659 | case TIOCSERGETLSR: | |
441b62c1 | 1660 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
1da177e4 LT |
1661 | return get_lsr_info(edge_port, (unsigned int __user *) arg); |
1662 | return 0; | |
1663 | ||
1664 | case TIOCGSERIAL: | |
441b62c1 | 1665 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
1da177e4 LT |
1666 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); |
1667 | ||
1668 | case TIOCSSERIAL: | |
441b62c1 | 1669 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
1da177e4 LT |
1670 | break; |
1671 | ||
1672 | case TIOCMIWAIT: | |
441b62c1 | 1673 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
1da177e4 LT |
1674 | cprev = edge_port->icount; |
1675 | while (1) { | |
1676 | prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE); | |
1677 | schedule(); | |
1678 | finish_wait(&edge_port->delta_msr_wait, &wait); | |
1679 | /* see if a signal did it */ | |
1680 | if (signal_pending(current)) | |
1681 | return -ERESTARTSYS; | |
1682 | cnow = edge_port->icount; | |
1683 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1684 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1685 | return -EIO; /* no change => error */ | |
1686 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1687 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1688 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1689 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { | |
1690 | return 0; | |
1691 | } | |
1692 | cprev = cnow; | |
1693 | } | |
1694 | /* NOTREACHED */ | |
1695 | break; | |
1696 | ||
1697 | case TIOCGICOUNT: | |
1698 | cnow = edge_port->icount; | |
1699 | memset(&icount, 0, sizeof(icount)); | |
1700 | icount.cts = cnow.cts; | |
1701 | icount.dsr = cnow.dsr; | |
1702 | icount.rng = cnow.rng; | |
1703 | icount.dcd = cnow.dcd; | |
1704 | icount.rx = cnow.rx; | |
1705 | icount.tx = cnow.tx; | |
1706 | icount.frame = cnow.frame; | |
1707 | icount.overrun = cnow.overrun; | |
1708 | icount.parity = cnow.parity; | |
1709 | icount.brk = cnow.brk; | |
1710 | icount.buf_overrun = cnow.buf_overrun; | |
1711 | ||
441b62c1 | 1712 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, port->number, icount.rx, icount.tx ); |
1da177e4 LT |
1713 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
1714 | return -EFAULT; | |
1715 | return 0; | |
1716 | } | |
1717 | ||
1718 | return -ENOIOCTLCMD; | |
1719 | } | |
1720 | ||
1721 | ||
1722 | /***************************************************************************** | |
1723 | * SerialBreak | |
1724 | * this function sends a break to the port | |
1725 | *****************************************************************************/ | |
1726 | static void edge_break (struct usb_serial_port *port, int break_state) | |
1727 | { | |
1728 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
6e8cf775 | 1729 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1730 | int status; |
1731 | ||
6e8cf775 GKH |
1732 | if ((!edge_serial->is_epic) || |
1733 | ((edge_serial->is_epic) && | |
1734 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1735 | /* flush and chase */ | |
cb8eaa8b | 1736 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1737 | |
441b62c1 | 1738 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
6e8cf775 GKH |
1739 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); |
1740 | if (status == 0) { | |
1741 | // block until chase finished | |
1742 | block_until_chase_response(edge_port); | |
1743 | } else { | |
cb8eaa8b | 1744 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1745 | } |
1da177e4 LT |
1746 | } |
1747 | ||
6e8cf775 GKH |
1748 | if ((!edge_serial->is_epic) || |
1749 | ((edge_serial->is_epic) && | |
1750 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1751 | if (break_state == -1) { | |
441b62c1 | 1752 | dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__); |
6e8cf775 GKH |
1753 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0); |
1754 | } else { | |
441b62c1 | 1755 | dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__); |
6e8cf775 GKH |
1756 | status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0); |
1757 | } | |
1758 | if (status) { | |
441b62c1 | 1759 | dbg("%s - error sending break set/clear command.", __func__); |
6e8cf775 | 1760 | } |
1da177e4 LT |
1761 | } |
1762 | ||
1763 | return; | |
1764 | } | |
1765 | ||
1766 | ||
1767 | /***************************************************************************** | |
1768 | * process_rcvd_data | |
1769 | * this function handles the data received on the bulk in pipe. | |
1770 | *****************************************************************************/ | |
1771 | static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength) | |
1772 | { | |
1773 | struct usb_serial_port *port; | |
1774 | struct edgeport_port *edge_port; | |
1775 | struct tty_struct *tty; | |
1776 | __u16 lastBufferLength; | |
1777 | __u16 rxLen; | |
1778 | ||
441b62c1 | 1779 | dbg("%s", __func__); |
1da177e4 LT |
1780 | |
1781 | lastBufferLength = bufferLength + 1; | |
1782 | ||
1783 | while (bufferLength > 0) { | |
1784 | /* failsafe incase we get a message that we don't understand */ | |
1785 | if (lastBufferLength == bufferLength) { | |
441b62c1 | 1786 | dbg("%s - stuck in loop, exiting it.", __func__); |
1da177e4 LT |
1787 | break; |
1788 | } | |
1789 | lastBufferLength = bufferLength; | |
1790 | ||
1791 | switch (edge_serial->rxState) { | |
1792 | case EXPECT_HDR1: | |
1793 | edge_serial->rxHeader1 = *buffer; | |
1794 | ++buffer; | |
1795 | --bufferLength; | |
1796 | ||
1797 | if (bufferLength == 0) { | |
1798 | edge_serial->rxState = EXPECT_HDR2; | |
1799 | break; | |
1800 | } | |
1801 | /* otherwise, drop on through */ | |
1802 | ||
1803 | case EXPECT_HDR2: | |
1804 | edge_serial->rxHeader2 = *buffer; | |
1805 | ++buffer; | |
1806 | --bufferLength; | |
1807 | ||
441b62c1 | 1808 | dbg("%s - Hdr1=%02X Hdr2=%02X", __func__, edge_serial->rxHeader1, edge_serial->rxHeader2); |
1da177e4 LT |
1809 | |
1810 | // Process depending on whether this header is | |
1811 | // data or status | |
1812 | ||
1813 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1814 | // Decode this status header and goto EXPECT_HDR1 (if we | |
1815 | // can process the status with only 2 bytes), or goto | |
1816 | // EXPECT_HDR3 to get the third byte. | |
1817 | ||
1818 | edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1819 | edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1); | |
1820 | ||
1821 | if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) { | |
1822 | // This status needs additional bytes. Save what we have | |
1823 | // and then wait for more data. | |
1824 | edge_serial->rxStatusParam = edge_serial->rxHeader2; | |
1825 | ||
1826 | edge_serial->rxState = EXPECT_HDR3; | |
1827 | break; | |
1828 | } | |
1829 | ||
1830 | // We have all the header bytes, process the status now | |
1831 | process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0); | |
1832 | edge_serial->rxState = EXPECT_HDR1; | |
1833 | break; | |
1834 | } else { | |
1835 | edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1836 | edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2); | |
1837 | ||
441b62c1 | 1838 | dbg("%s - Data for Port %u Len %u", __func__, edge_serial->rxPort, edge_serial->rxBytesRemaining); |
1da177e4 LT |
1839 | |
1840 | //ASSERT( DevExt->RxPort < DevExt->NumPorts ); | |
1841 | //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH ); | |
1842 | ||
1843 | if (bufferLength == 0 ) { | |
1844 | edge_serial->rxState = EXPECT_DATA; | |
1845 | break; | |
1846 | } | |
1847 | // Else, drop through | |
1848 | } | |
1849 | ||
1850 | case EXPECT_DATA: // Expect data | |
1851 | ||
1852 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1853 | rxLen = bufferLength; | |
1854 | edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer | |
1855 | } else { | |
1856 | // BufLen >= RxBytesRemaining | |
1857 | rxLen = edge_serial->rxBytesRemaining; | |
1858 | edge_serial->rxState = EXPECT_HDR1; // Start another header next time | |
1859 | } | |
1860 | ||
1861 | bufferLength -= rxLen; | |
1862 | edge_serial->rxBytesRemaining -= rxLen; | |
1863 | ||
1864 | /* spit this data back into the tty driver if this port is open */ | |
1865 | if (rxLen) { | |
1866 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1867 | edge_port = usb_get_serial_port_data(port); | |
1868 | if (edge_port->open) { | |
1869 | tty = edge_port->port->tty; | |
1870 | if (tty) { | |
441b62c1 | 1871 | dbg("%s - Sending %d bytes to TTY for port %d", __func__, rxLen, edge_serial->rxPort); |
1da177e4 LT |
1872 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); |
1873 | } | |
1874 | edge_port->icount.rx += rxLen; | |
1875 | } | |
1876 | buffer += rxLen; | |
1877 | } | |
1878 | ||
1879 | break; | |
1880 | ||
1881 | case EXPECT_HDR3: // Expect 3rd byte of status header | |
1882 | edge_serial->rxHeader3 = *buffer; | |
1883 | ++buffer; | |
1884 | --bufferLength; | |
1885 | ||
1886 | // We have all the header bytes, process the status now | |
1887 | process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3); | |
1888 | edge_serial->rxState = EXPECT_HDR1; | |
1889 | break; | |
1890 | ||
1891 | } | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | ||
1896 | /***************************************************************************** | |
1897 | * process_rcvd_status | |
1898 | * this function handles the any status messages received on the bulk in pipe. | |
1899 | *****************************************************************************/ | |
1900 | static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3) | |
1901 | { | |
1902 | struct usb_serial_port *port; | |
1903 | struct edgeport_port *edge_port; | |
1904 | __u8 code = edge_serial->rxStatusCode; | |
1905 | ||
1906 | /* switch the port pointer to the one being currently talked about */ | |
1907 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1908 | edge_port = usb_get_serial_port_data(port); | |
1909 | if (edge_port == NULL) { | |
441b62c1 | 1910 | dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __func__, edge_serial->rxPort); |
1da177e4 LT |
1911 | return; |
1912 | } | |
1913 | ||
441b62c1 | 1914 | dbg("%s - port %d", __func__, edge_serial->rxPort); |
1da177e4 LT |
1915 | |
1916 | if (code == IOSP_EXT_STATUS) { | |
1917 | switch (byte2) { | |
1918 | case IOSP_EXT_STATUS_CHASE_RSP: | |
1919 | // we want to do EXT status regardless of port open/closed | |
441b62c1 | 1920 | dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __func__, edge_serial->rxPort, byte3 ); |
1da177e4 LT |
1921 | // Currently, the only EXT_STATUS is Chase, so process here instead of one more call |
1922 | // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do. | |
1923 | // Also, we currently clear flag and close the port regardless of content of above's Byte3. | |
1924 | // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport, | |
1925 | // like wait longer in block_until_chase_response, but for now we don't. | |
cb8eaa8b | 1926 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1927 | wake_up (&edge_port->wait_chase); |
1928 | return; | |
1929 | ||
1930 | case IOSP_EXT_STATUS_RX_CHECK_RSP: | |
441b62c1 | 1931 | dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __func__, edge_serial->rxPort, byte3 ); |
cb8eaa8b | 1932 | //Port->RxCheckRsp = true; |
1da177e4 LT |
1933 | return; |
1934 | } | |
1935 | } | |
1936 | ||
1937 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1938 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1939 | edge_port->maxTxCredits = edge_port->txCredits; | |
441b62c1 | 1940 | dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits); |
1da177e4 LT |
1941 | handle_new_msr (edge_port, byte2); |
1942 | ||
1943 | /* send the current line settings to the port so we are in sync with any further termios calls */ | |
1944 | if (edge_port->port->tty) | |
1945 | change_port_settings (edge_port, edge_port->port->tty->termios); | |
1946 | ||
1947 | /* we have completed the open */ | |
cb8eaa8b RK |
1948 | edge_port->openPending = false; |
1949 | edge_port->open = true; | |
1da177e4 LT |
1950 | wake_up(&edge_port->wait_open); |
1951 | return; | |
1952 | } | |
1953 | ||
1954 | // If port is closed, silently discard all rcvd status. We can | |
1955 | // have cases where buffered status is received AFTER the close | |
1956 | // port command is sent to the Edgeport. | |
cb8eaa8b | 1957 | if (!edge_port->open || edge_port->closePending) { |
1da177e4 LT |
1958 | return; |
1959 | } | |
1960 | ||
1961 | switch (code) { | |
1962 | // Not currently sent by Edgeport | |
1963 | case IOSP_STATUS_LSR: | |
441b62c1 | 1964 | dbg("%s - Port %u LSR Status = %02x", __func__, edge_serial->rxPort, byte2); |
cb8eaa8b | 1965 | handle_new_lsr(edge_port, false, byte2, 0); |
1da177e4 LT |
1966 | break; |
1967 | ||
1968 | case IOSP_STATUS_LSR_DATA: | |
441b62c1 | 1969 | dbg("%s - Port %u LSR Status = %02x, Data = %02x", __func__, edge_serial->rxPort, byte2, byte3); |
1da177e4 LT |
1970 | // byte2 is LSR Register |
1971 | // byte3 is broken data byte | |
cb8eaa8b | 1972 | handle_new_lsr(edge_port, true, byte2, byte3); |
1da177e4 LT |
1973 | break; |
1974 | // | |
1975 | // case IOSP_EXT_4_STATUS: | |
441b62c1 | 1976 | // dbg("%s - Port %u LSR Status = %02x Data = %02x", __func__, edge_serial->rxPort, byte2, byte3); |
1da177e4 LT |
1977 | // break; |
1978 | // | |
1979 | case IOSP_STATUS_MSR: | |
441b62c1 | 1980 | dbg("%s - Port %u MSR Status = %02x", __func__, edge_serial->rxPort, byte2); |
1da177e4 LT |
1981 | |
1982 | // Process this new modem status and generate appropriate | |
1983 | // events, etc, based on the new status. This routine | |
1984 | // also saves the MSR in Port->ShadowMsr. | |
1985 | handle_new_msr(edge_port, byte2); | |
1986 | break; | |
1987 | ||
1988 | default: | |
441b62c1 | 1989 | dbg("%s - Unrecognized IOSP status code %u\n", __func__, code); |
1da177e4 LT |
1990 | break; |
1991 | } | |
1992 | ||
1993 | return; | |
1994 | } | |
1995 | ||
1996 | ||
1997 | /***************************************************************************** | |
1998 | * edge_tty_recv | |
1999 | * this function passes data on to the tty flip buffer | |
2000 | *****************************************************************************/ | |
2001 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) | |
2002 | { | |
2003 | int cnt; | |
2004 | ||
2005 | do { | |
33f0f88f AC |
2006 | cnt = tty_buffer_request_room(tty, length); |
2007 | if (cnt < length) { | |
2008 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
441b62c1 | 2009 | __func__, length - cnt); |
33f0f88f AC |
2010 | if(cnt == 0) |
2011 | break; | |
1da177e4 | 2012 | } |
33f0f88f | 2013 | tty_insert_flip_string(tty, data, cnt); |
1da177e4 LT |
2014 | data += cnt; |
2015 | length -= cnt; | |
2016 | } while (length > 0); | |
2017 | ||
2018 | tty_flip_buffer_push(tty); | |
2019 | } | |
2020 | ||
2021 | ||
2022 | /***************************************************************************** | |
2023 | * handle_new_msr | |
2024 | * this function handles any change to the msr register for a port. | |
2025 | *****************************************************************************/ | |
2026 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2027 | { | |
2028 | struct async_icount *icount; | |
2029 | ||
441b62c1 | 2030 | dbg("%s %02x", __func__, newMsr); |
1da177e4 LT |
2031 | |
2032 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
2033 | icount = &edge_port->icount; | |
2034 | ||
2035 | /* update input line counters */ | |
2036 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) { | |
2037 | icount->cts++; | |
2038 | } | |
2039 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) { | |
2040 | icount->dsr++; | |
2041 | } | |
2042 | if (newMsr & EDGEPORT_MSR_DELTA_CD) { | |
2043 | icount->dcd++; | |
2044 | } | |
2045 | if (newMsr & EDGEPORT_MSR_DELTA_RI) { | |
2046 | icount->rng++; | |
2047 | } | |
2048 | wake_up_interruptible(&edge_port->delta_msr_wait); | |
2049 | } | |
2050 | ||
2051 | /* Save the new modem status */ | |
2052 | edge_port->shadowMSR = newMsr & 0xf0; | |
2053 | ||
2054 | return; | |
2055 | } | |
2056 | ||
2057 | ||
2058 | /***************************************************************************** | |
2059 | * handle_new_lsr | |
2060 | * this function handles any change to the lsr register for a port. | |
2061 | *****************************************************************************/ | |
2062 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data) | |
2063 | { | |
2064 | __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2065 | struct async_icount *icount; | |
2066 | ||
441b62c1 | 2067 | dbg("%s - %02x", __func__, newLsr); |
1da177e4 LT |
2068 | |
2069 | edge_port->shadowLSR = lsr; | |
2070 | ||
2071 | if (newLsr & LSR_BREAK) { | |
2072 | // | |
2073 | // Parity and Framing errors only count if they | |
2074 | // occur exclusive of a break being | |
2075 | // received. | |
2076 | // | |
2077 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); | |
2078 | } | |
2079 | ||
2080 | /* Place LSR data byte into Rx buffer */ | |
2081 | if (lsrData && edge_port->port->tty) | |
2082 | edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1); | |
2083 | ||
2084 | /* update input line counters */ | |
2085 | icount = &edge_port->icount; | |
2086 | if (newLsr & LSR_BREAK) { | |
2087 | icount->brk++; | |
2088 | } | |
2089 | if (newLsr & LSR_OVER_ERR) { | |
2090 | icount->overrun++; | |
2091 | } | |
2092 | if (newLsr & LSR_PAR_ERR) { | |
2093 | icount->parity++; | |
2094 | } | |
2095 | if (newLsr & LSR_FRM_ERR) { | |
2096 | icount->frame++; | |
2097 | } | |
2098 | ||
2099 | return; | |
2100 | } | |
2101 | ||
2102 | ||
2103 | /**************************************************************************** | |
2104 | * sram_write | |
2105 | * writes a number of bytes to the Edgeport device's sram starting at the | |
2106 | * given address. | |
2107 | * If successful returns the number of bytes written, otherwise it returns | |
2108 | * a negative error number of the problem. | |
2109 | ****************************************************************************/ | |
5b9ea932 | 2110 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data) |
1da177e4 LT |
2111 | { |
2112 | int result; | |
2113 | __u16 current_length; | |
2114 | unsigned char *transfer_buffer; | |
2115 | ||
441b62c1 | 2116 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 LT |
2117 | |
2118 | transfer_buffer = kmalloc (64, GFP_KERNEL); | |
2119 | if (!transfer_buffer) { | |
441b62c1 | 2120 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __func__, 64); |
1da177e4 LT |
2121 | return -ENOMEM; |
2122 | } | |
2123 | ||
2124 | /* need to split these writes up into 64 byte chunks */ | |
2125 | result = 0; | |
2126 | while (length > 0) { | |
2127 | if (length > 64) { | |
2128 | current_length = 64; | |
2129 | } else { | |
2130 | current_length = length; | |
2131 | } | |
441b62c1 | 2132 | // dbg("%s - writing %x, %x, %d", __func__, extAddr, addr, current_length); |
1da177e4 LT |
2133 | memcpy (transfer_buffer, data, current_length); |
2134 | result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM, | |
2135 | 0x40, addr, extAddr, transfer_buffer, current_length, 300); | |
2136 | if (result < 0) | |
2137 | break; | |
2138 | length -= current_length; | |
2139 | addr += current_length; | |
2140 | data += current_length; | |
2141 | } | |
2142 | ||
2143 | kfree (transfer_buffer); | |
2144 | return result; | |
2145 | } | |
2146 | ||
2147 | ||
2148 | /**************************************************************************** | |
2149 | * rom_write | |
2150 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2151 | * given address. | |
2152 | * If successful returns the number of bytes written, otherwise it returns | |
2153 | * a negative error number of the problem. | |
2154 | ****************************************************************************/ | |
5b9ea932 | 2155 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data) |
1da177e4 LT |
2156 | { |
2157 | int result; | |
2158 | __u16 current_length; | |
2159 | unsigned char *transfer_buffer; | |
2160 | ||
441b62c1 | 2161 | // dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 LT |
2162 | |
2163 | transfer_buffer = kmalloc (64, GFP_KERNEL); | |
2164 | if (!transfer_buffer) { | |
441b62c1 | 2165 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __func__, 64); |
1da177e4 LT |
2166 | return -ENOMEM; |
2167 | } | |
2168 | ||
2169 | /* need to split these writes up into 64 byte chunks */ | |
2170 | result = 0; | |
2171 | while (length > 0) { | |
2172 | if (length > 64) { | |
2173 | current_length = 64; | |
2174 | } else { | |
2175 | current_length = length; | |
2176 | } | |
441b62c1 | 2177 | // dbg("%s - writing %x, %x, %d", __func__, extAddr, addr, current_length); |
1da177e4 LT |
2178 | memcpy (transfer_buffer, data, current_length); |
2179 | result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM, | |
2180 | 0x40, addr, extAddr, transfer_buffer, current_length, 300); | |
2181 | if (result < 0) | |
2182 | break; | |
2183 | length -= current_length; | |
2184 | addr += current_length; | |
2185 | data += current_length; | |
2186 | } | |
2187 | ||
2188 | kfree (transfer_buffer); | |
2189 | return result; | |
2190 | } | |
2191 | ||
2192 | ||
2193 | /**************************************************************************** | |
2194 | * rom_read | |
2195 | * reads a number of bytes from the Edgeport device starting at the given | |
2196 | * address. | |
2197 | * If successful returns the number of bytes read, otherwise it returns | |
2198 | * a negative error number of the problem. | |
2199 | ****************************************************************************/ | |
2200 | static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) | |
2201 | { | |
2202 | int result; | |
2203 | __u16 current_length; | |
2204 | unsigned char *transfer_buffer; | |
2205 | ||
441b62c1 | 2206 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 LT |
2207 | |
2208 | transfer_buffer = kmalloc (64, GFP_KERNEL); | |
2209 | if (!transfer_buffer) { | |
441b62c1 | 2210 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __func__, 64); |
1da177e4 LT |
2211 | return -ENOMEM; |
2212 | } | |
2213 | ||
2214 | /* need to split these reads up into 64 byte chunks */ | |
2215 | result = 0; | |
2216 | while (length > 0) { | |
2217 | if (length > 64) { | |
2218 | current_length = 64; | |
2219 | } else { | |
2220 | current_length = length; | |
2221 | } | |
441b62c1 | 2222 | // dbg("%s - %x, %x, %d", __func__, extAddr, addr, current_length); |
1da177e4 LT |
2223 | result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM, |
2224 | 0xC0, addr, extAddr, transfer_buffer, current_length, 300); | |
2225 | if (result < 0) | |
2226 | break; | |
2227 | memcpy (data, transfer_buffer, current_length); | |
2228 | length -= current_length; | |
2229 | addr += current_length; | |
2230 | data += current_length; | |
2231 | } | |
2232 | ||
2233 | kfree (transfer_buffer); | |
2234 | return result; | |
2235 | } | |
2236 | ||
2237 | ||
2238 | /**************************************************************************** | |
2239 | * send_iosp_ext_cmd | |
2240 | * Is used to send a IOSP message to the Edgeport device | |
2241 | ****************************************************************************/ | |
2242 | static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param) | |
2243 | { | |
2244 | unsigned char *buffer; | |
2245 | unsigned char *currentCommand; | |
2246 | int length = 0; | |
2247 | int status = 0; | |
2248 | ||
441b62c1 | 2249 | dbg("%s - %d, %d", __func__, command, param); |
1da177e4 LT |
2250 | |
2251 | buffer = kmalloc (10, GFP_ATOMIC); | |
2252 | if (!buffer) { | |
441b62c1 | 2253 | dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __func__, 10); |
1da177e4 LT |
2254 | return -ENOMEM; |
2255 | } | |
2256 | ||
2257 | currentCommand = buffer; | |
2258 | ||
2259 | MAKE_CMD_EXT_CMD (¤tCommand, &length, | |
2260 | edge_port->port->number - edge_port->port->serial->minor, | |
2261 | command, param); | |
2262 | ||
2263 | status = write_cmd_usb (edge_port, buffer, length); | |
2264 | if (status) { | |
2265 | /* something bad happened, let's free up the memory */ | |
2266 | kfree(buffer); | |
2267 | } | |
2268 | ||
2269 | return status; | |
2270 | } | |
2271 | ||
2272 | ||
2273 | /***************************************************************************** | |
2274 | * write_cmd_usb | |
2275 | * this function writes the given buffer out to the bulk write endpoint. | |
2276 | *****************************************************************************/ | |
2277 | static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length) | |
2278 | { | |
2279 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); | |
2280 | int status = 0; | |
2281 | struct urb *urb; | |
2282 | int timeout; | |
2283 | ||
441b62c1 | 2284 | usb_serial_debug_data(debug, &edge_port->port->dev, __func__, length, buffer); |
1da177e4 LT |
2285 | |
2286 | /* Allocate our next urb */ | |
2287 | urb = usb_alloc_urb (0, GFP_ATOMIC); | |
2288 | if (!urb) | |
2289 | return -ENOMEM; | |
2290 | ||
96c706ed | 2291 | atomic_inc(&CmdUrbs); |
441b62c1 | 2292 | dbg("%s - ALLOCATE URB %p (outstanding %d)", __func__, urb, atomic_read(&CmdUrbs)); |
1da177e4 LT |
2293 | |
2294 | usb_fill_bulk_urb (urb, edge_serial->serial->dev, | |
2295 | usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), | |
2296 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
2297 | ||
cb8eaa8b | 2298 | edge_port->commandPending = true; |
1da177e4 LT |
2299 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2300 | ||
2301 | if (status) { | |
2302 | /* something went wrong */ | |
441b62c1 | 2303 | dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __func__, status); |
1da177e4 LT |
2304 | usb_kill_urb(urb); |
2305 | usb_free_urb(urb); | |
96c706ed | 2306 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2307 | return status; |
2308 | } | |
2309 | ||
2310 | // wait for command to finish | |
2311 | timeout = COMMAND_TIMEOUT; | |
2312 | #if 0 | |
cb8eaa8b | 2313 | wait_event (&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2314 | |
cb8eaa8b | 2315 | if (edge_port->commandPending) { |
1da177e4 | 2316 | /* command timed out */ |
441b62c1 | 2317 | dbg("%s - command timed out", __func__); |
1da177e4 LT |
2318 | status = -EINVAL; |
2319 | } | |
2320 | #endif | |
2321 | return status; | |
2322 | } | |
2323 | ||
2324 | ||
2325 | /***************************************************************************** | |
2326 | * send_cmd_write_baud_rate | |
2327 | * this function sends the proper command to change the baud rate of the | |
2328 | * specified port. | |
2329 | *****************************************************************************/ | |
2330 | static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate) | |
2331 | { | |
6e8cf775 | 2332 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
1da177e4 LT |
2333 | unsigned char *cmdBuffer; |
2334 | unsigned char *currCmd; | |
2335 | int cmdLen = 0; | |
2336 | int divisor; | |
2337 | int status; | |
2338 | unsigned char number = edge_port->port->number - edge_port->port->serial->minor; | |
2339 | ||
bc71e479 AK |
2340 | if (edge_serial->is_epic && |
2341 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
6e8cf775 GKH |
2342 | dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d", |
2343 | edge_port->port->number, baudRate); | |
2344 | return 0; | |
2345 | } | |
2346 | ||
441b62c1 | 2347 | dbg("%s - port = %d, baud = %d", __func__, edge_port->port->number, baudRate); |
1da177e4 LT |
2348 | |
2349 | status = calc_baud_rate_divisor (baudRate, &divisor); | |
2350 | if (status) { | |
441b62c1 | 2351 | dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __func__); |
1da177e4 LT |
2352 | return status; |
2353 | } | |
2354 | ||
2355 | // Alloc memory for the string of commands. | |
2356 | cmdBuffer = kmalloc (0x100, GFP_ATOMIC); | |
2357 | if (!cmdBuffer) { | |
441b62c1 | 2358 | dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __func__, 0x100); |
1da177e4 LT |
2359 | return -ENOMEM; |
2360 | } | |
2361 | currCmd = cmdBuffer; | |
2362 | ||
2363 | // Enable access to divisor latch | |
2364 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE ); | |
2365 | ||
2366 | // Write the divisor itself | |
2367 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) ); | |
2368 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) ); | |
2369 | ||
2370 | // Restore original value to disable access to divisor latch | |
2371 | MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR); | |
2372 | ||
2373 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen ); | |
2374 | if (status) { | |
2375 | /* something bad happened, let's free up the memory */ | |
2376 | kfree (cmdBuffer); | |
2377 | } | |
2378 | ||
2379 | return status; | |
2380 | } | |
2381 | ||
2382 | ||
2383 | /***************************************************************************** | |
2384 | * calc_baud_rate_divisor | |
2385 | * this function calculates the proper baud rate divisor for the specified | |
2386 | * baud rate. | |
2387 | *****************************************************************************/ | |
2388 | static int calc_baud_rate_divisor (int baudrate, int *divisor) | |
2389 | { | |
2390 | int i; | |
2391 | __u16 custom; | |
2392 | ||
2393 | ||
441b62c1 | 2394 | dbg("%s - %d", __func__, baudrate); |
1da177e4 | 2395 | |
52950ed4 | 2396 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
1da177e4 LT |
2397 | if ( divisor_table[i].BaudRate == baudrate ) { |
2398 | *divisor = divisor_table[i].Divisor; | |
2399 | return 0; | |
2400 | } | |
2401 | } | |
2402 | ||
2403 | // We have tried all of the standard baud rates | |
2404 | // lets try to calculate the divisor for this baud rate | |
2405 | // Make sure the baud rate is reasonable | |
2406 | if (baudrate > 50 && baudrate < 230400) { | |
2407 | // get divisor | |
2408 | custom = (__u16)((230400L + baudrate/2) / baudrate); | |
2409 | ||
2410 | *divisor = custom; | |
2411 | ||
441b62c1 | 2412 | dbg("%s - Baud %d = %d\n", __func__, baudrate, custom); |
1da177e4 LT |
2413 | return 0; |
2414 | } | |
2415 | ||
2416 | return -1; | |
2417 | } | |
2418 | ||
2419 | ||
2420 | /***************************************************************************** | |
2421 | * send_cmd_write_uart_register | |
2422 | * this function builds up a uart register message and sends to to the device. | |
2423 | *****************************************************************************/ | |
2424 | static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue) | |
2425 | { | |
6e8cf775 | 2426 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
1da177e4 LT |
2427 | unsigned char *cmdBuffer; |
2428 | unsigned char *currCmd; | |
2429 | unsigned long cmdLen = 0; | |
2430 | int status; | |
2431 | ||
441b62c1 | 2432 | dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); |
1da177e4 | 2433 | |
bc71e479 AK |
2434 | if (edge_serial->is_epic && |
2435 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2436 | regNum == MCR) { | |
beb7dd86 | 2437 | dbg("SendCmdWriteUartReg - Not writing to MCR Register"); |
6e8cf775 GKH |
2438 | return 0; |
2439 | } | |
2440 | ||
bc71e479 AK |
2441 | if (edge_serial->is_epic && |
2442 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2443 | regNum == LCR) { | |
beb7dd86 | 2444 | dbg ("SendCmdWriteUartReg - Not writing to LCR Register"); |
6e8cf775 GKH |
2445 | return 0; |
2446 | } | |
2447 | ||
1da177e4 LT |
2448 | // Alloc memory for the string of commands. |
2449 | cmdBuffer = kmalloc (0x10, GFP_ATOMIC); | |
2450 | if (cmdBuffer == NULL ) { | |
2451 | return -ENOMEM; | |
2452 | } | |
2453 | ||
2454 | currCmd = cmdBuffer; | |
2455 | ||
2456 | // Build a cmd in the buffer to write the given register | |
2457 | MAKE_CMD_WRITE_REG (&currCmd, &cmdLen, | |
2458 | edge_port->port->number - edge_port->port->serial->minor, | |
2459 | regNum, regValue); | |
2460 | ||
2461 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2462 | if (status) { | |
2463 | /* something bad happened, let's free up the memory */ | |
2464 | kfree (cmdBuffer); | |
2465 | } | |
2466 | ||
2467 | return status; | |
2468 | } | |
2469 | ||
2470 | ||
2471 | /***************************************************************************** | |
2472 | * change_port_settings | |
2473 | * This routine is called to set the UART on the device to match the specified | |
2474 | * new settings. | |
2475 | *****************************************************************************/ | |
2476 | #ifndef CMSPAR | |
2477 | #define CMSPAR 0 | |
2478 | #endif | |
606d099c | 2479 | static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios) |
1da177e4 | 2480 | { |
6e8cf775 | 2481 | struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); |
1da177e4 LT |
2482 | struct tty_struct *tty; |
2483 | int baud; | |
2484 | unsigned cflag; | |
2485 | __u8 mask = 0xff; | |
2486 | __u8 lData; | |
2487 | __u8 lParity; | |
2488 | __u8 lStop; | |
2489 | __u8 rxFlow; | |
2490 | __u8 txFlow; | |
2491 | int status; | |
2492 | ||
441b62c1 | 2493 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2494 | |
cb8eaa8b RK |
2495 | if (!edge_port->open && |
2496 | !edge_port->openPending) { | |
441b62c1 | 2497 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
2498 | return; |
2499 | } | |
2500 | ||
2501 | tty = edge_port->port->tty; | |
2502 | if ((!tty) || | |
2503 | (!tty->termios)) { | |
441b62c1 | 2504 | dbg("%s - no tty structures", __func__); |
1da177e4 LT |
2505 | return; |
2506 | } | |
2507 | ||
2508 | cflag = tty->termios->c_cflag; | |
2509 | ||
2510 | switch (cflag & CSIZE) { | |
441b62c1 HH |
2511 | case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __func__); break; |
2512 | case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __func__); break; | |
2513 | case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __func__); break; | |
1da177e4 | 2514 | default: |
441b62c1 | 2515 | case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __func__); break; |
1da177e4 LT |
2516 | } |
2517 | ||
2518 | lParity = LCR_PAR_NONE; | |
2519 | if (cflag & PARENB) { | |
2520 | if (cflag & CMSPAR) { | |
2521 | if (cflag & PARODD) { | |
2522 | lParity = LCR_PAR_MARK; | |
441b62c1 | 2523 | dbg("%s - parity = mark", __func__); |
1da177e4 LT |
2524 | } else { |
2525 | lParity = LCR_PAR_SPACE; | |
441b62c1 | 2526 | dbg("%s - parity = space", __func__); |
1da177e4 LT |
2527 | } |
2528 | } else if (cflag & PARODD) { | |
2529 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2530 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2531 | } else { |
2532 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2533 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2534 | } |
2535 | } else { | |
441b62c1 | 2536 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2537 | } |
2538 | ||
2539 | if (cflag & CSTOPB) { | |
2540 | lStop = LCR_STOP_2; | |
441b62c1 | 2541 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2542 | } else { |
2543 | lStop = LCR_STOP_1; | |
441b62c1 | 2544 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2545 | } |
2546 | ||
2547 | /* figure out the flow control settings */ | |
2548 | rxFlow = txFlow = 0x00; | |
2549 | if (cflag & CRTSCTS) { | |
2550 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2551 | txFlow |= IOSP_TX_FLOW_CTS; | |
441b62c1 | 2552 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2553 | } else { |
441b62c1 | 2554 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2555 | } |
2556 | ||
2557 | /* if we are implementing XON/XOFF, set the start and stop character in the device */ | |
2558 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
2559 | unsigned char stop_char = STOP_CHAR(tty); | |
2560 | unsigned char start_char = START_CHAR(tty); | |
2561 | ||
6e8cf775 GKH |
2562 | if ((!edge_serial->is_epic) || |
2563 | ((edge_serial->is_epic) && | |
2564 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
2565 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XON_CHAR, start_char); | |
2566 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
2567 | } | |
1da177e4 LT |
2568 | |
2569 | /* if we are implementing INBOUND XON/XOFF */ | |
2570 | if (I_IXOFF(tty)) { | |
2571 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
441b62c1 | 2572 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __func__, start_char, stop_char); |
1da177e4 | 2573 | } else { |
441b62c1 | 2574 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2575 | } |
2576 | ||
2577 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2578 | if (I_IXON(tty)) { | |
2579 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
441b62c1 | 2580 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __func__, start_char, stop_char); |
1da177e4 | 2581 | } else { |
441b62c1 | 2582 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2583 | } |
2584 | } | |
2585 | ||
2586 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2587 | if ((!edge_serial->is_epic) || |
2588 | ((edge_serial->is_epic) && | |
2589 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2590 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2591 | if ((!edge_serial->is_epic) || | |
2592 | ((edge_serial->is_epic) && | |
2593 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2594 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2595 | |
2596 | ||
2597 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2598 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2599 | ||
2600 | edge_port->validDataMask = mask; | |
2601 | ||
2602 | /* Send the updated LCR value to the EdgePort */ | |
2603 | status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR); | |
2604 | if (status != 0) { | |
2605 | return; | |
2606 | } | |
2607 | ||
2608 | /* set up the MCR register and send it to the EdgePort */ | |
2609 | edge_port->shadowMCR = MCR_MASTER_IE; | |
2610 | if (cflag & CBAUD) { | |
2611 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); | |
2612 | } | |
2613 | status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
2614 | if (status != 0) { | |
2615 | return; | |
2616 | } | |
2617 | ||
2618 | /* Determine divisor based on baud rate */ | |
2619 | baud = tty_get_baud_rate(tty); | |
2620 | if (!baud) { | |
2621 | /* pick a default, any default... */ | |
2622 | baud = 9600; | |
2623 | } | |
2624 | ||
441b62c1 | 2625 | dbg("%s - baud rate = %d", __func__, baud); |
1da177e4 | 2626 | status = send_cmd_write_baud_rate (edge_port, baud); |
6ce073bd AC |
2627 | if (status == -1) { |
2628 | /* Speed change was not possible - put back the old speed */ | |
2629 | baud = tty_termios_baud_rate(old_termios); | |
2630 | tty_encode_baud_rate(tty, baud, baud); | |
2631 | } | |
1da177e4 LT |
2632 | return; |
2633 | } | |
2634 | ||
2635 | ||
2636 | /**************************************************************************** | |
2637 | * unicode_to_ascii | |
2638 | * Turns a string from Unicode into ASCII. | |
2639 | * Doesn't do a good job with any characters that are outside the normal | |
2640 | * ASCII range, but it's only for debugging... | |
2641 | * NOTE: expects the unicode in LE format | |
2642 | ****************************************************************************/ | |
ad93375a | 2643 | static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size) |
1da177e4 LT |
2644 | { |
2645 | int i; | |
2646 | ||
ad93375a | 2647 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2648 | return; |
ad93375a | 2649 | --buflen; /* space for nul */ |
1da177e4 | 2650 | |
ad93375a PZ |
2651 | for (i = 0; i < unicode_size; i++) { |
2652 | if (i >= buflen) | |
2653 | break; | |
1da177e4 | 2654 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2655 | } |
2656 | string[i] = 0x00; | |
1da177e4 LT |
2657 | } |
2658 | ||
2659 | ||
2660 | /**************************************************************************** | |
2661 | * get_manufacturing_desc | |
2662 | * reads in the manufacturing descriptor and stores it into the serial | |
2663 | * structure. | |
2664 | ****************************************************************************/ | |
2665 | static void get_manufacturing_desc (struct edgeport_serial *edge_serial) | |
2666 | { | |
2667 | int response; | |
2668 | ||
2669 | dbg("getting manufacturer descriptor"); | |
2670 | ||
2671 | response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2672 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN, | |
2673 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
2674 | ||
2675 | if (response < 1) { | |
2676 | dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n"); | |
2677 | } else { | |
2678 | char string[30]; | |
2679 | dbg("**Manufacturer Descriptor"); | |
2680 | dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize); | |
2681 | dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize); | |
2682 | dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev); | |
2683 | dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev); | |
2684 | dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts); | |
2685 | 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 | 2686 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2687 | edge_serial->manuf_descriptor.SerialNumber, |
2688 | edge_serial->manuf_descriptor.SerNumLength/2); | |
1da177e4 | 2689 | dbg(" SerialNumber: %s", string); |
4bc203d9 | 2690 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2691 | edge_serial->manuf_descriptor.AssemblyNumber, |
2692 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
1da177e4 | 2693 | dbg(" AssemblyNumber: %s", string); |
4bc203d9 | 2694 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2695 | edge_serial->manuf_descriptor.OemAssyNumber, |
2696 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
1da177e4 LT |
2697 | dbg(" OemAssyNumber: %s", string); |
2698 | dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType); | |
2699 | dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid); | |
2700 | dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig); | |
2701 | } | |
2702 | } | |
2703 | ||
2704 | ||
2705 | /**************************************************************************** | |
2706 | * get_boot_desc | |
2707 | * reads in the bootloader descriptor and stores it into the serial | |
2708 | * structure. | |
2709 | ****************************************************************************/ | |
2710 | static void get_boot_desc (struct edgeport_serial *edge_serial) | |
2711 | { | |
2712 | int response; | |
2713 | ||
2714 | dbg("getting boot descriptor"); | |
2715 | ||
2716 | response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2717 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN, | |
2718 | (__u8 *)(&edge_serial->boot_descriptor)); | |
2719 | ||
2720 | if (response < 1) { | |
2721 | dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n"); | |
2722 | } else { | |
2723 | dbg("**Boot Descriptor:"); | |
2724 | dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2725 | dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion); | |
2726 | dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion); | |
2727 | dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
2728 | dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); | |
2729 | dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0); | |
2730 | dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1); | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | ||
2735 | /**************************************************************************** | |
2736 | * load_application_firmware | |
2737 | * This is called to load the application firmware to the device | |
2738 | ****************************************************************************/ | |
2739 | static void load_application_firmware (struct edgeport_serial *edge_serial) | |
2740 | { | |
5b9ea932 JS |
2741 | const struct ihex_binrec *rec; |
2742 | const struct firmware *fw; | |
2743 | const char *fw_name; | |
2744 | const char *fw_info; | |
1da177e4 | 2745 | int response; |
5b9ea932 JS |
2746 | __u32 Operaddr; |
2747 | __u16 build; | |
1da177e4 LT |
2748 | |
2749 | switch (edge_serial->product_info.iDownloadFile) { | |
2750 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2751 | fw_info = "downloading firmware version (930)"; |
2752 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2753 | break; |
2754 | ||
2755 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2756 | fw_info = "downloading firmware version (80251)"; |
2757 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2758 | break; |
2759 | ||
2760 | case EDGE_DOWNLOAD_FILE_NONE: | |
2761 | dbg ("No download file specified, skipping download\n"); | |
2762 | return; | |
2763 | ||
2764 | default: | |
2765 | return; | |
2766 | } | |
2767 | ||
5b9ea932 JS |
2768 | response = request_ihex_firmware(&fw, fw_name, |
2769 | &edge_serial->serial->dev->dev); | |
2770 | if (response) { | |
2771 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
2772 | fw_name, response); | |
2773 | return; | |
2774 | } | |
2775 | ||
2776 | rec = (const struct ihex_binrec *)fw->data; | |
2777 | build = (rec->data[2] << 8) | rec->data[3]; | |
2778 | ||
2779 | dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build); | |
2780 | ||
2781 | edge_serial->product_info.FirmwareMajorVersion = fw->data[0]; | |
2782 | edge_serial->product_info.FirmwareMinorVersion = fw->data[1]; | |
2783 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); | |
1da177e4 | 2784 | |
5b9ea932 JS |
2785 | for (rec = ihex_next_binrec(rec); rec; |
2786 | rec = ihex_next_binrec(rec)) { | |
2787 | Operaddr = be32_to_cpu(rec->addr); | |
2788 | response = sram_write(edge_serial->serial, | |
2789 | Operaddr >> 16, | |
2790 | Operaddr & 0xFFFF, | |
2791 | be16_to_cpu(rec->len), | |
2792 | &rec->data[0]); | |
1da177e4 | 2793 | if (response < 0) { |
5b9ea932 JS |
2794 | dev_err(&edge_serial->serial->dev->dev, |
2795 | "sram_write failed (%x, %x, %d)\n", | |
2796 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2797 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2798 | break; |
2799 | } | |
2800 | } | |
2801 | ||
2802 | dbg("sending exec_dl_code"); | |
2803 | response = usb_control_msg (edge_serial->serial->dev, | |
2804 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2805 | USB_REQUEST_ION_EXEC_DL_CODE, | |
2806 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); | |
2807 | ||
5b9ea932 | 2808 | release_firmware(fw); |
1da177e4 LT |
2809 | return; |
2810 | } | |
2811 | ||
2812 | ||
2813 | /**************************************************************************** | |
2814 | * edge_startup | |
2815 | ****************************************************************************/ | |
2816 | static int edge_startup (struct usb_serial *serial) | |
2817 | { | |
2818 | struct edgeport_serial *edge_serial; | |
2819 | struct edgeport_port *edge_port; | |
2820 | struct usb_device *dev; | |
bfd5df3c | 2821 | int i, j; |
6e8cf775 | 2822 | int response; |
cb8eaa8b RK |
2823 | bool interrupt_in_found; |
2824 | bool bulk_in_found; | |
2825 | bool bulk_out_found; | |
6e8cf775 GKH |
2826 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2827 | EDGE_COMPATIBILITY_MASK1, | |
2828 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2829 | |
2830 | dev = serial->dev; | |
2831 | ||
2832 | /* create our private serial structure */ | |
80b6ca48 | 2833 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2834 | if (edge_serial == NULL) { |
441b62c1 | 2835 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2836 | return -ENOMEM; |
2837 | } | |
1da177e4 LT |
2838 | spin_lock_init(&edge_serial->es_lock); |
2839 | edge_serial->serial = serial; | |
2840 | usb_set_serial_data(serial, edge_serial); | |
2841 | ||
2842 | /* get the name for the device from the device */ | |
ad93375a PZ |
2843 | i = get_string(dev, dev->descriptor.iManufacturer, |
2844 | &edge_serial->name[0], MAX_NAME_LEN+1); | |
2845 | edge_serial->name[i++] = ' '; | |
2846 | get_string(dev, dev->descriptor.iProduct, | |
2847 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); | |
1da177e4 LT |
2848 | |
2849 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2850 | ||
6e8cf775 GKH |
2851 | /* Read the epic descriptor */ |
2852 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2853 | /* memcpy descriptor to Supports structures */ | |
2854 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2855 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2856 | |
6e8cf775 GKH |
2857 | /* get the manufacturing descriptor for this device */ |
2858 | get_manufacturing_desc (edge_serial); | |
1da177e4 | 2859 | |
6e8cf775 GKH |
2860 | /* get the boot descriptor */ |
2861 | get_boot_desc (edge_serial); | |
2862 | ||
2863 | get_product_info(edge_serial); | |
2864 | } | |
1da177e4 LT |
2865 | |
2866 | /* set the number of ports from the manufacturing description */ | |
2867 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2868 | if ((!edge_serial->is_epic) && |
2869 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
2870 | dev_warn(&serial->dev->dev, "Device Reported %d serial ports " | |
2871 | "vs. core thinking we have %d ports, email " | |
898eb71c | 2872 | "greg@kroah.com this information.\n", |
6e8cf775 GKH |
2873 | edge_serial->product_info.NumPorts, |
2874 | serial->num_ports); | |
1da177e4 LT |
2875 | } |
2876 | ||
441b62c1 | 2877 | dbg("%s - time 1 %ld", __func__, jiffies); |
1da177e4 | 2878 | |
6e8cf775 GKH |
2879 | /* If not an EPiC device */ |
2880 | if (!edge_serial->is_epic) { | |
2881 | /* now load the application firmware into this device */ | |
2882 | load_application_firmware (edge_serial); | |
1da177e4 | 2883 | |
441b62c1 | 2884 | dbg("%s - time 2 %ld", __func__, jiffies); |
1da177e4 | 2885 | |
6e8cf775 GKH |
2886 | /* Check current Edgeport EEPROM and update if necessary */ |
2887 | update_edgeport_E2PROM (edge_serial); | |
1da177e4 | 2888 | |
441b62c1 | 2889 | dbg("%s - time 3 %ld", __func__, jiffies); |
6e8cf775 GKH |
2890 | |
2891 | /* set the configuration to use #1 */ | |
2892 | // dbg("set_configuration 1"); | |
2893 | // usb_set_configuration (dev, 1); | |
2894 | } | |
5b9ea932 JS |
2895 | dbg(" FirmwareMajorVersion %d.%d.%d", |
2896 | edge_serial->product_info.FirmwareMajorVersion, | |
2897 | edge_serial->product_info.FirmwareMinorVersion, | |
2898 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 LT |
2899 | |
2900 | /* we set up the pointers to the endpoints in the edge_open function, | |
2901 | * as the structures aren't created yet. */ | |
2902 | ||
2903 | /* set up our port private structures */ | |
2904 | for (i = 0; i < serial->num_ports; ++i) { | |
2905 | edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL); | |
2906 | if (edge_port == NULL) { | |
441b62c1 | 2907 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
bfd5df3c CL |
2908 | for (j = 0; j < i; ++j) { |
2909 | kfree (usb_get_serial_port_data(serial->port[j])); | |
2910 | usb_set_serial_port_data(serial->port[j], NULL); | |
2911 | } | |
1da177e4 LT |
2912 | usb_set_serial_data(serial, NULL); |
2913 | kfree(edge_serial); | |
2914 | return -ENOMEM; | |
2915 | } | |
2916 | memset (edge_port, 0, sizeof(struct edgeport_port)); | |
2917 | spin_lock_init(&edge_port->ep_lock); | |
2918 | edge_port->port = serial->port[i]; | |
2919 | usb_set_serial_port_data(serial->port[i], edge_port); | |
2920 | } | |
6e8cf775 GKH |
2921 | |
2922 | response = 0; | |
2923 | ||
2924 | if (edge_serial->is_epic) { | |
2925 | /* EPIC thing, set up our interrupt polling now and our read urb, so | |
2926 | * that the device knows it really is connected. */ | |
cb8eaa8b | 2927 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
6e8cf775 GKH |
2928 | for (i = 0; i < serial->interface->altsetting[0].desc.bNumEndpoints; ++i) { |
2929 | struct usb_endpoint_descriptor *endpoint; | |
2930 | int buffer_size; | |
2931 | ||
2932 | endpoint = &serial->interface->altsetting[0].endpoint[i].desc; | |
2933 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
cb8eaa8b | 2934 | if (!interrupt_in_found && |
6e8cf775 GKH |
2935 | (usb_endpoint_is_int_in(endpoint))) { |
2936 | /* we found a interrupt in endpoint */ | |
2937 | dbg("found interrupt in"); | |
2938 | ||
2939 | /* not set up yet, so do it now */ | |
2940 | edge_serial->interrupt_read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2941 | if (!edge_serial->interrupt_read_urb) { | |
2942 | err("out of memory"); | |
2943 | return -ENOMEM; | |
2944 | } | |
2945 | edge_serial->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2946 | if (!edge_serial->interrupt_in_buffer) { | |
2947 | err("out of memory"); | |
2948 | usb_free_urb(edge_serial->interrupt_read_urb); | |
2949 | return -ENOMEM; | |
2950 | } | |
2951 | edge_serial->interrupt_in_endpoint = endpoint->bEndpointAddress; | |
2952 | ||
2953 | /* set up our interrupt urb */ | |
2954 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
2955 | dev, | |
2956 | usb_rcvintpipe(dev, endpoint->bEndpointAddress), | |
2957 | edge_serial->interrupt_in_buffer, | |
2958 | buffer_size, | |
2959 | edge_interrupt_callback, | |
2960 | edge_serial, | |
2961 | endpoint->bInterval); | |
2962 | ||
cb8eaa8b | 2963 | interrupt_in_found = true; |
6e8cf775 GKH |
2964 | } |
2965 | ||
cb8eaa8b | 2966 | if (!bulk_in_found && |
6e8cf775 GKH |
2967 | (usb_endpoint_is_bulk_in(endpoint))) { |
2968 | /* we found a bulk in endpoint */ | |
2969 | dbg("found bulk in"); | |
2970 | ||
2971 | /* not set up yet, so do it now */ | |
2972 | edge_serial->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2973 | if (!edge_serial->read_urb) { | |
2974 | err("out of memory"); | |
2975 | return -ENOMEM; | |
2976 | } | |
2977 | edge_serial->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2978 | if (!edge_serial->bulk_in_buffer) { | |
2979 | err ("out of memory"); | |
2980 | usb_free_urb(edge_serial->read_urb); | |
2981 | return -ENOMEM; | |
2982 | } | |
2983 | edge_serial->bulk_in_endpoint = endpoint->bEndpointAddress; | |
2984 | ||
2985 | /* set up our bulk in urb */ | |
2986 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
2987 | usb_rcvbulkpipe(dev, endpoint->bEndpointAddress), | |
2988 | edge_serial->bulk_in_buffer, | |
fd05e720 | 2989 | le16_to_cpu(endpoint->wMaxPacketSize), |
6e8cf775 GKH |
2990 | edge_bulk_in_callback, |
2991 | edge_serial); | |
cb8eaa8b | 2992 | bulk_in_found = true; |
6e8cf775 GKH |
2993 | } |
2994 | ||
cb8eaa8b | 2995 | if (!bulk_out_found && |
6e8cf775 GKH |
2996 | (usb_endpoint_is_bulk_out(endpoint))) { |
2997 | /* we found a bulk out endpoint */ | |
2998 | dbg("found bulk out"); | |
2999 | edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress; | |
cb8eaa8b | 3000 | bulk_out_found = true; |
6e8cf775 GKH |
3001 | } |
3002 | } | |
3003 | ||
cb8eaa8b | 3004 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
6e8cf775 GKH |
3005 | err ("Error - the proper endpoints were not found!"); |
3006 | return -ENODEV; | |
3007 | } | |
3008 | ||
3009 | /* start interrupt read for this edgeport this interrupt will | |
3010 | * continue as long as the edgeport is connected */ | |
3011 | response = usb_submit_urb(edge_serial->interrupt_read_urb, GFP_KERNEL); | |
3012 | if (response) | |
441b62c1 | 3013 | err("%s - Error %d submitting control urb", __func__, response); |
6e8cf775 GKH |
3014 | } |
3015 | return response; | |
1da177e4 LT |
3016 | } |
3017 | ||
3018 | ||
3019 | /**************************************************************************** | |
3020 | * edge_shutdown | |
3021 | * This function is called whenever the device is removed from the usb bus. | |
3022 | ****************************************************************************/ | |
3023 | static void edge_shutdown (struct usb_serial *serial) | |
3024 | { | |
6e8cf775 | 3025 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 LT |
3026 | int i; |
3027 | ||
441b62c1 | 3028 | dbg("%s", __func__); |
1da177e4 LT |
3029 | |
3030 | /* stop reads and writes on all ports */ | |
3031 | for (i=0; i < serial->num_ports; ++i) { | |
3032 | kfree (usb_get_serial_port_data(serial->port[i])); | |
3033 | usb_set_serial_port_data(serial->port[i], NULL); | |
3034 | } | |
6e8cf775 GKH |
3035 | /* free up our endpoint stuff */ |
3036 | if (edge_serial->is_epic) { | |
74ac07e8 | 3037 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
3038 | usb_free_urb(edge_serial->interrupt_read_urb); |
3039 | kfree(edge_serial->interrupt_in_buffer); | |
3040 | ||
74ac07e8 | 3041 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
3042 | usb_free_urb(edge_serial->read_urb); |
3043 | kfree(edge_serial->bulk_in_buffer); | |
3044 | } | |
3045 | ||
3046 | kfree(edge_serial); | |
1da177e4 LT |
3047 | usb_set_serial_data(serial, NULL); |
3048 | } | |
3049 | ||
3050 | ||
3051 | /**************************************************************************** | |
3052 | * edgeport_init | |
3053 | * This is called by the module subsystem, or on startup to initialize us | |
3054 | ****************************************************************************/ | |
3055 | static int __init edgeport_init(void) | |
3056 | { | |
3057 | int retval; | |
3058 | ||
3059 | retval = usb_serial_register(&edgeport_2port_device); | |
3060 | if (retval) | |
3061 | goto failed_2port_device_register; | |
3062 | retval = usb_serial_register(&edgeport_4port_device); | |
3063 | if (retval) | |
3064 | goto failed_4port_device_register; | |
3065 | retval = usb_serial_register(&edgeport_8port_device); | |
3066 | if (retval) | |
3067 | goto failed_8port_device_register; | |
6e8cf775 GKH |
3068 | retval = usb_serial_register(&epic_device); |
3069 | if (retval) | |
3070 | goto failed_epic_device_register; | |
1da177e4 LT |
3071 | retval = usb_register(&io_driver); |
3072 | if (retval) | |
3073 | goto failed_usb_register; | |
96c706ed | 3074 | atomic_set(&CmdUrbs, 0); |
1da177e4 LT |
3075 | info(DRIVER_DESC " " DRIVER_VERSION); |
3076 | return 0; | |
3077 | ||
3078 | failed_usb_register: | |
6e8cf775 GKH |
3079 | usb_serial_deregister(&epic_device); |
3080 | failed_epic_device_register: | |
1da177e4 LT |
3081 | usb_serial_deregister(&edgeport_8port_device); |
3082 | failed_8port_device_register: | |
3083 | usb_serial_deregister(&edgeport_4port_device); | |
3084 | failed_4port_device_register: | |
3085 | usb_serial_deregister(&edgeport_2port_device); | |
3086 | failed_2port_device_register: | |
3087 | return retval; | |
3088 | } | |
3089 | ||
3090 | ||
3091 | /**************************************************************************** | |
3092 | * edgeport_exit | |
3093 | * Called when the driver is about to be unloaded. | |
3094 | ****************************************************************************/ | |
3095 | static void __exit edgeport_exit (void) | |
3096 | { | |
3097 | usb_deregister (&io_driver); | |
3098 | usb_serial_deregister (&edgeport_2port_device); | |
3099 | usb_serial_deregister (&edgeport_4port_device); | |
3100 | usb_serial_deregister (&edgeport_8port_device); | |
6e8cf775 | 3101 | usb_serial_deregister (&epic_device); |
1da177e4 LT |
3102 | } |
3103 | ||
3104 | module_init(edgeport_init); | |
3105 | module_exit(edgeport_exit); | |
3106 | ||
3107 | /* Module information */ | |
3108 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
3109 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
3110 | MODULE_LICENSE("GPL"); | |
5b9ea932 JS |
3111 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3112 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3113 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3114 | MODULE_FIRMWARE("edgeport/down2.fw"); | |
1da177e4 LT |
3115 | |
3116 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3117 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
3118 | ||
3119 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); | |
3120 | MODULE_PARM_DESC(low_latency, "Low latency enabled or not"); |