Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Edgeport USB Serial Converter driver | |
3 | * | |
4 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * Supports the following devices: | |
13 | * Edgeport/4 | |
14 | * Edgeport/4t | |
15 | * Edgeport/2 | |
16 | * Edgeport/4i | |
17 | * Edgeport/2i | |
18 | * Edgeport/421 | |
19 | * Edgeport/21 | |
20 | * Rapidport/4 | |
21 | * Edgeport/8 | |
22 | * Edgeport/2D8 | |
23 | * Edgeport/4D8 | |
24 | * Edgeport/8i | |
25 | * | |
26 | * For questions or problems with this driver, contact Inside Out | |
27 | * Networks technical support, or Peter Berger <pberger@brimson.com>, | |
28 | * or Al Borchers <alborchers@steinerpoint.com>. | |
29 | * | |
1da177e4 LT |
30 | */ |
31 | ||
1da177e4 LT |
32 | #include <linux/kernel.h> |
33 | #include <linux/jiffies.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/tty_driver.h> | |
39 | #include <linux/tty_flip.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/serial.h> | |
43 | #include <linux/ioctl.h> | |
44 | #include <linux/wait.h> | |
5b9ea932 JS |
45 | #include <linux/firmware.h> |
46 | #include <linux/ihex.h> | |
03f0dbf7 | 47 | #include <linux/uaccess.h> |
1da177e4 | 48 | #include <linux/usb.h> |
a969888c | 49 | #include <linux/usb/serial.h> |
1da177e4 LT |
50 | #include "io_edgeport.h" |
51 | #include "io_ionsp.h" /* info for the iosp messages */ | |
52 | #include "io_16654.h" /* 16654 UART defines */ | |
53 | ||
54 | /* | |
55 | * Version Information | |
56 | */ | |
57 | #define DRIVER_VERSION "v2.7" | |
58 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" | |
59 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
60 | ||
1da177e4 LT |
61 | #define MAX_NAME_LEN 64 |
62 | ||
63 | #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ | |
64 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ | |
65 | #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ | |
66 | ||
67 | /* receive port state */ | |
68 | enum RXSTATE { | |
03f0dbf7 AC |
69 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
70 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
71 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
72 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
73 | }; |
74 | ||
75 | ||
03f0dbf7 AC |
76 | /* Transmit Fifo |
77 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
78 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
79 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
80 | */ | |
81 | struct TxFifo { | |
82 | unsigned int head; /* index to head pointer (write) */ | |
83 | unsigned int tail; /* index to tail pointer (read) */ | |
84 | unsigned int count; /* Bytes in queue */ | |
85 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
86 | unsigned char *fifo; /* allocated Buffer */ | |
87 | }; | |
88 | ||
89 | /* This structure holds all of the local port information */ | |
90 | struct edgeport_port { | |
91 | __u16 txCredits; /* our current credits for this port */ | |
92 | __u16 maxTxCredits; /* the max size of the port */ | |
93 | ||
94 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
95 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 96 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
97 | spinlock_t ep_lock; |
98 | ||
99 | __u8 shadowLCR; /* last LCR value received */ | |
100 | __u8 shadowMCR; /* last MCR value received */ | |
101 | __u8 shadowMSR; /* last MSR value received */ | |
102 | __u8 shadowLSR; /* last LSR value received */ | |
103 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
104 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
105 | __u8 validDataMask; | |
106 | __u32 baudRate; | |
107 | ||
cb8eaa8b RK |
108 | bool open; |
109 | bool openPending; | |
110 | bool commandPending; | |
111 | bool closePending; | |
112 | bool chaseResponsePending; | |
1da177e4 LT |
113 | |
114 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
115 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
116 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
117 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
118 | ||
119 | struct async_icount icount; | |
120 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
121 | }; | |
122 | ||
123 | ||
124 | /* This structure holds all of the individual device information */ | |
125 | struct edgeport_serial { | |
ad93375a | 126 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
127 | |
128 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
129 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
130 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
131 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
132 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
133 | |
134 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
135 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
136 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
137 | |
138 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
139 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
140 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 141 | bool read_in_progress; |
1da177e4 LT |
142 | spinlock_t es_lock; |
143 | ||
144 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
145 | ||
146 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
147 | ||
148 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
149 | __u8 rxHeader1; /* receive header byte 1 */ | |
150 | __u8 rxHeader2; /* receive header byte 2 */ | |
151 | __u8 rxHeader3; /* receive header byte 3 */ | |
152 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
153 | __u8 rxStatusCode; /* the receive status code */ | |
154 | __u8 rxStatusParam; /* the receive status paramater */ | |
155 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
156 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
157 | }; | |
158 | ||
159 | /* baud rate information */ | |
160 | struct divisor_table_entry { | |
161 | __u32 BaudRate; | |
162 | __u16 Divisor; | |
163 | }; | |
164 | ||
03f0dbf7 AC |
165 | /* |
166 | * Define table of divisors for Rev A EdgePort/4 hardware | |
167 | * These assume a 3.6864MHz crystal, the standard /16, and | |
168 | * MCR.7 = 0. | |
169 | */ | |
170 | ||
4c4c9432 | 171 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
172 | { 50, 4608}, |
173 | { 75, 3072}, | |
174 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
175 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
176 | { 150, 1536}, |
177 | { 300, 768}, | |
178 | { 600, 384}, | |
179 | { 1200, 192}, | |
180 | { 1800, 128}, | |
181 | { 2400, 96}, | |
182 | { 4800, 48}, | |
183 | { 7200, 32}, | |
184 | { 9600, 24}, | |
185 | { 14400, 16}, | |
186 | { 19200, 12}, | |
187 | { 38400, 6}, | |
188 | { 57600, 4}, | |
189 | { 115200, 2}, | |
190 | { 230400, 1}, | |
191 | }; | |
192 | ||
193 | /* local variables */ | |
90ab5ee9 | 194 | static bool debug; |
1da177e4 | 195 | |
36ccce49 GKH |
196 | /* Number of outstanding Command Write Urbs */ |
197 | static atomic_t CmdUrbs = ATOMIC_INIT(0); | |
1da177e4 LT |
198 | |
199 | ||
200 | /* local function prototypes */ | |
201 | ||
202 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
203 | static void edge_interrupt_callback(struct urb *urb); |
204 | static void edge_bulk_in_callback(struct urb *urb); | |
205 | static void edge_bulk_out_data_callback(struct urb *urb); | |
206 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
207 | |
208 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 209 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 210 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
211 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
212 | const unsigned char *buf, int count); | |
213 | static int edge_write_room(struct tty_struct *tty); | |
214 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
215 | static void edge_throttle(struct tty_struct *tty); | |
216 | static void edge_unthrottle(struct tty_struct *tty); | |
217 | static void edge_set_termios(struct tty_struct *tty, | |
218 | struct usb_serial_port *port, | |
219 | struct ktermios *old_termios); | |
00a0d0d6 | 220 | static int edge_ioctl(struct tty_struct *tty, |
03f0dbf7 AC |
221 | unsigned int cmd, unsigned long arg); |
222 | static void edge_break(struct tty_struct *tty, int break_state); | |
60b33c13 | 223 | static int edge_tiocmget(struct tty_struct *tty); |
20b9d177 | 224 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 225 | unsigned int set, unsigned int clear); |
0bca1b91 AC |
226 | static int edge_get_icount(struct tty_struct *tty, |
227 | struct serial_icounter_struct *icount); | |
03f0dbf7 | 228 | static int edge_startup(struct usb_serial *serial); |
f9c99bb8 AS |
229 | static void edge_disconnect(struct usb_serial *serial); |
230 | static void edge_release(struct usb_serial *serial); | |
1da177e4 LT |
231 | |
232 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
233 | ||
1da177e4 | 234 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
235 | |
236 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
237 | unsigned char *buffer, __u16 bufferLength); | |
238 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
239 | __u8 byte2, __u8 byte3); | |
240 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, | |
241 | unsigned char *data, int length); | |
242 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); | |
243 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
244 | __u8 lsr, __u8 data); | |
245 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
246 | __u8 param); | |
247 | static int calc_baud_rate_divisor(int baud_rate, int *divisor); | |
248 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, | |
249 | int baudRate); | |
250 | static void change_port_settings(struct tty_struct *tty, | |
251 | struct edgeport_port *edge_port, | |
252 | struct ktermios *old_termios); | |
253 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
254 | __u8 regNum, __u8 regValue); | |
255 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
256 | unsigned char *buffer, int writeLength); | |
257 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
258 | struct edgeport_port *edge_port); | |
259 | ||
260 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
261 | __u16 length, const __u8 *data); | |
262 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
263 | __u16 length, __u8 *data); | |
264 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
265 | __u16 length, const __u8 *data); | |
266 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
267 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
268 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
269 | ||
270 | static void unicode_to_ascii(char *string, int buflen, | |
271 | __le16 *unicode, int unicode_size); | |
272 | ||
273 | ||
274 | /* ************************************************************************ */ | |
275 | /* ************************************************************************ */ | |
276 | /* ************************************************************************ */ | |
277 | /* ************************************************************************ */ | |
1da177e4 LT |
278 | |
279 | /************************************************************************ | |
280 | * * | |
281 | * update_edgeport_E2PROM() Compare current versions of * | |
282 | * Boot ROM and Manufacture * | |
283 | * Descriptors with versions * | |
284 | * embedded in this driver * | |
285 | * * | |
286 | ************************************************************************/ | |
03f0dbf7 | 287 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 LT |
288 | { |
289 | __u32 BootCurVer; | |
290 | __u32 BootNewVer; | |
5b9ea932 JS |
291 | __u8 BootMajorVersion; |
292 | __u8 BootMinorVersion; | |
293 | __u16 BootBuildNumber; | |
294 | __u32 Bootaddr; | |
295 | const struct ihex_binrec *rec; | |
296 | const struct firmware *fw; | |
297 | const char *fw_name; | |
1da177e4 LT |
298 | int response; |
299 | ||
1da177e4 | 300 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
301 | case EDGE_DOWNLOAD_FILE_I930: |
302 | fw_name = "edgeport/boot.fw"; | |
303 | break; | |
304 | case EDGE_DOWNLOAD_FILE_80251: | |
305 | fw_name = "edgeport/boot2.fw"; | |
306 | break; | |
307 | default: | |
308 | return; | |
1da177e4 LT |
309 | } |
310 | ||
5b9ea932 JS |
311 | response = request_ihex_firmware(&fw, fw_name, |
312 | &edge_serial->serial->dev->dev); | |
313 | if (response) { | |
314 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
315 | fw_name, response); | |
316 | return; | |
317 | } | |
318 | ||
319 | rec = (const struct ihex_binrec *)fw->data; | |
320 | BootMajorVersion = rec->data[0]; | |
321 | BootMinorVersion = rec->data[1]; | |
322 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
323 | ||
03f0dbf7 | 324 | /* Check Boot Image Version */ |
1da177e4 LT |
325 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
326 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
327 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
328 | ||
329 | BootNewVer = (BootMajorVersion << 24) + | |
330 | (BootMinorVersion << 16) + | |
5b9ea932 | 331 | BootBuildNumber; |
1da177e4 LT |
332 | |
333 | dbg("Current Boot Image version %d.%d.%d", | |
334 | edge_serial->boot_descriptor.MajorVersion, | |
335 | edge_serial->boot_descriptor.MinorVersion, | |
336 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
337 | ||
338 | ||
339 | if (BootNewVer > BootCurVer) { | |
340 | dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", | |
341 | edge_serial->boot_descriptor.MajorVersion, | |
342 | edge_serial->boot_descriptor.MinorVersion, | |
343 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 344 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 LT |
345 | |
346 | dbg("Downloading new Boot Image"); | |
347 | ||
5b9ea932 JS |
348 | for (rec = ihex_next_binrec(rec); rec; |
349 | rec = ihex_next_binrec(rec)) { | |
350 | Bootaddr = be32_to_cpu(rec->addr); | |
351 | response = rom_write(edge_serial->serial, | |
352 | Bootaddr >> 16, | |
353 | Bootaddr & 0xFFFF, | |
354 | be16_to_cpu(rec->len), | |
355 | &rec->data[0]); | |
1da177e4 | 356 | if (response < 0) { |
5b9ea932 JS |
357 | dev_err(&edge_serial->serial->dev->dev, |
358 | "rom_write failed (%x, %x, %d)\n", | |
359 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
360 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
361 | break; |
362 | } | |
363 | } | |
364 | } else { | |
365 | dbg("Boot Image -- already up to date"); | |
366 | } | |
5b9ea932 | 367 | release_firmware(fw); |
1da177e4 LT |
368 | } |
369 | ||
1da177e4 LT |
370 | #if 0 |
371 | /************************************************************************ | |
372 | * | |
373 | * Get string descriptor from device | |
374 | * | |
375 | ************************************************************************/ | |
03f0dbf7 AC |
376 | static int get_string_desc(struct usb_device *dev, int Id, |
377 | struct usb_string_descriptor **pRetDesc) | |
1da177e4 LT |
378 | { |
379 | struct usb_string_descriptor StringDesc; | |
380 | struct usb_string_descriptor *pStringDesc; | |
381 | ||
03f0dbf7 | 382 | dbg("%s - USB String ID = %d", __func__, Id); |
1da177e4 | 383 | |
03f0dbf7 AC |
384 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
385 | sizeof(StringDesc))) | |
1da177e4 | 386 | return 0; |
1da177e4 | 387 | |
03f0dbf7 AC |
388 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
389 | if (!pStringDesc) | |
1da177e4 | 390 | return -1; |
1da177e4 | 391 | |
03f0dbf7 AC |
392 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
393 | StringDesc.bLength)) { | |
1da177e4 LT |
394 | kfree(pStringDesc); |
395 | return -1; | |
396 | } | |
397 | ||
398 | *pRetDesc = pStringDesc; | |
399 | return 0; | |
400 | } | |
401 | #endif | |
402 | ||
6e8cf775 GKH |
403 | static void dump_product_info(struct edgeport_product_info *product_info) |
404 | { | |
03f0dbf7 | 405 | /* Dump Product Info structure */ |
6e8cf775 | 406 | dbg("**Product Information:"); |
03f0dbf7 AC |
407 | dbg(" ProductId %x", product_info->ProductId); |
408 | dbg(" NumPorts %d", product_info->NumPorts); | |
409 | dbg(" ProdInfoVer %d", product_info->ProdInfoVer); | |
6e8cf775 | 410 | dbg(" IsServer %d", product_info->IsServer); |
03f0dbf7 AC |
411 | dbg(" IsRS232 %d", product_info->IsRS232); |
412 | dbg(" IsRS422 %d", product_info->IsRS422); | |
413 | dbg(" IsRS485 %d", product_info->IsRS485); | |
414 | dbg(" RomSize %d", product_info->RomSize); | |
415 | dbg(" RamSize %d", product_info->RamSize); | |
416 | dbg(" CpuRev %x", product_info->CpuRev); | |
6e8cf775 GKH |
417 | dbg(" BoardRev %x", product_info->BoardRev); |
418 | dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, | |
419 | product_info->BootMinorVersion, | |
420 | le16_to_cpu(product_info->BootBuildNumber)); | |
03f0dbf7 AC |
421 | dbg(" FirmwareMajorVersion %d.%d.%d", |
422 | product_info->FirmwareMajorVersion, | |
423 | product_info->FirmwareMinorVersion, | |
424 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
425 | dbg(" ManufactureDescDate %d/%d/%d", | |
426 | product_info->ManufactureDescDate[0], | |
427 | product_info->ManufactureDescDate[1], | |
428 | product_info->ManufactureDescDate[2]+1900); | |
6e8cf775 GKH |
429 | dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); |
430 | dbg(" EpicVer %d", product_info->EpicVer); | |
431 | } | |
432 | ||
1da177e4 LT |
433 | static void get_product_info(struct edgeport_serial *edge_serial) |
434 | { | |
435 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
436 | ||
03f0dbf7 AC |
437 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
438 | ||
439 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
440 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
441 | product_info->ProdInfoVer = 0; | |
442 | ||
443 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
444 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
445 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
446 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
447 | ||
448 | product_info->BootMajorVersion = | |
449 | edge_serial->boot_descriptor.MajorVersion; | |
450 | product_info->BootMinorVersion = | |
451 | edge_serial->boot_descriptor.MinorVersion; | |
452 | product_info->BootBuildNumber = | |
453 | edge_serial->boot_descriptor.BuildNumber; | |
454 | ||
455 | memcpy(product_info->ManufactureDescDate, | |
456 | edge_serial->manuf_descriptor.DescDate, | |
457 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
458 | ||
459 | /* check if this is 2nd generation hardware */ | |
460 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
461 | & ION_DEVICE_ID_80251_NETCHIP) | |
462 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
463 | else | |
464 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
465 | ||
466 | /* Determine Product type and set appropriate flags */ | |
1da177e4 | 467 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
468 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
469 | case ION_DEVICE_ID_EDGEPORT_4T: | |
470 | case ION_DEVICE_ID_EDGEPORT_4: | |
471 | case ION_DEVICE_ID_EDGEPORT_2: | |
472 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
473 | case ION_DEVICE_ID_EDGEPORT_8: | |
474 | case ION_DEVICE_ID_EDGEPORT_421: | |
475 | case ION_DEVICE_ID_EDGEPORT_21: | |
476 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
477 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
478 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
479 | product_info->IsRS232 = 1; | |
480 | break; | |
1da177e4 | 481 | |
03f0dbf7 AC |
482 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
483 | product_info->IsRS422 = 1; | |
484 | product_info->IsRS485 = 1; | |
485 | break; | |
1da177e4 | 486 | |
03f0dbf7 AC |
487 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
488 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
489 | product_info->IsRS422 = 1; | |
490 | break; | |
1da177e4 LT |
491 | } |
492 | ||
6e8cf775 GKH |
493 | dump_product_info(product_info); |
494 | } | |
1da177e4 | 495 | |
6e8cf775 GKH |
496 | static int get_epic_descriptor(struct edgeport_serial *ep) |
497 | { | |
498 | int result; | |
499 | struct usb_serial *serial = ep->serial; | |
500 | struct edgeport_product_info *product_info = &ep->product_info; | |
501 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
502 | struct edge_compatibility_bits *bits; | |
503 | ||
504 | ep->is_epic = 0; | |
505 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
506 | USB_REQUEST_ION_GET_EPIC_DESC, | |
507 | 0xC0, 0x00, 0x00, | |
508 | &ep->epic_descriptor, | |
509 | sizeof(struct edge_compatibility_descriptor), | |
510 | 300); | |
511 | ||
441b62c1 | 512 | dbg("%s result = %d", __func__, result); |
6e8cf775 GKH |
513 | |
514 | if (result > 0) { | |
515 | ep->is_epic = 1; | |
516 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
517 | ||
03f0dbf7 AC |
518 | product_info->NumPorts = epic->NumPorts; |
519 | product_info->ProdInfoVer = 0; | |
520 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
521 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
522 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
523 | product_info->iDownloadFile = epic->iDownloadFile; | |
524 | product_info->EpicVer = epic->EpicVer; | |
525 | product_info->Epic = epic->Supports; | |
526 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
6e8cf775 GKH |
527 | dump_product_info(product_info); |
528 | ||
529 | bits = &ep->epic_descriptor.Supports; | |
530 | dbg("**EPIC descriptor:"); | |
531 | dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
03f0dbf7 AC |
532 | dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE"); |
533 | dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE"); | |
534 | dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE"); | |
535 | dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
536 | dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
537 | dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
538 | dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
539 | dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
540 | dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
541 | dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
542 | dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
543 | dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE"); | |
6e8cf775 GKH |
544 | } |
545 | ||
546 | return result; | |
1da177e4 LT |
547 | } |
548 | ||
549 | ||
550 | /************************************************************************/ | |
551 | /************************************************************************/ | |
552 | /* U S B C A L L B A C K F U N C T I O N S */ | |
553 | /* U S B C A L L B A C K F U N C T I O N S */ | |
554 | /************************************************************************/ | |
555 | /************************************************************************/ | |
556 | ||
557 | /***************************************************************************** | |
558 | * edge_interrupt_callback | |
03f0dbf7 | 559 | * this is the callback function for when we have received data on the |
1da177e4 LT |
560 | * interrupt endpoint. |
561 | *****************************************************************************/ | |
03f0dbf7 | 562 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 563 | { |
cdc97792 | 564 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 LT |
565 | struct edgeport_port *edge_port; |
566 | struct usb_serial_port *port; | |
4a90f09b | 567 | struct tty_struct *tty; |
1da177e4 LT |
568 | unsigned char *data = urb->transfer_buffer; |
569 | int length = urb->actual_length; | |
570 | int bytes_avail; | |
571 | int position; | |
572 | int txCredits; | |
573 | int portNumber; | |
574 | int result; | |
2a393f5f | 575 | int status = urb->status; |
1da177e4 | 576 | |
441b62c1 | 577 | dbg("%s", __func__); |
1da177e4 | 578 | |
2a393f5f | 579 | switch (status) { |
1da177e4 LT |
580 | case 0: |
581 | /* success */ | |
582 | break; | |
583 | case -ECONNRESET: | |
584 | case -ENOENT: | |
585 | case -ESHUTDOWN: | |
586 | /* this urb is terminated, clean up */ | |
2a393f5f | 587 | dbg("%s - urb shutting down with status: %d", |
03f0dbf7 | 588 | __func__, status); |
1da177e4 LT |
589 | return; |
590 | default: | |
03f0dbf7 | 591 | dbg("%s - nonzero urb status received: %d", __func__, status); |
1da177e4 LT |
592 | goto exit; |
593 | } | |
594 | ||
03f0dbf7 | 595 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 596 | if (length) { |
03f0dbf7 AC |
597 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, |
598 | __func__, length, data); | |
1da177e4 LT |
599 | |
600 | if (length > 1) { | |
601 | bytes_avail = data[0] | (data[1] << 8); | |
602 | if (bytes_avail) { | |
603 | spin_lock(&edge_serial->es_lock); | |
604 | edge_serial->rxBytesAvail += bytes_avail; | |
441b62c1 | 605 | dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); |
1da177e4 LT |
606 | |
607 | if (edge_serial->rxBytesAvail > 0 && | |
608 | !edge_serial->read_in_progress) { | |
441b62c1 | 609 | dbg("%s - posting a read", __func__); |
cb8eaa8b | 610 | edge_serial->read_in_progress = true; |
1da177e4 | 611 | |
03f0dbf7 AC |
612 | /* we have pending bytes on the |
613 | bulk in pipe, send a request */ | |
1da177e4 LT |
614 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
615 | if (result) { | |
441b62c1 | 616 | dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result); |
cb8eaa8b | 617 | edge_serial->read_in_progress = false; |
1da177e4 LT |
618 | } |
619 | } | |
620 | spin_unlock(&edge_serial->es_lock); | |
621 | } | |
622 | } | |
623 | /* grab the txcredits for the ports if available */ | |
624 | position = 2; | |
625 | portNumber = 0; | |
03f0dbf7 AC |
626 | while ((position < length) && |
627 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
628 | txCredits = data[position] | (data[position+1] << 8); |
629 | if (txCredits) { | |
630 | port = edge_serial->serial->port[portNumber]; | |
631 | edge_port = usb_get_serial_port_data(port); | |
632 | if (edge_port->open) { | |
633 | spin_lock(&edge_port->ep_lock); | |
634 | edge_port->txCredits += txCredits; | |
635 | spin_unlock(&edge_port->ep_lock); | |
03f0dbf7 AC |
636 | dbg("%s - txcredits for port%d = %d", |
637 | __func__, portNumber, | |
638 | edge_port->txCredits); | |
1da177e4 | 639 | |
03f0dbf7 AC |
640 | /* tell the tty driver that something |
641 | has changed */ | |
4a90f09b AC |
642 | tty = tty_port_tty_get( |
643 | &edge_port->port->port); | |
644 | if (tty) { | |
645 | tty_wakeup(tty); | |
646 | tty_kref_put(tty); | |
647 | } | |
03f0dbf7 AC |
648 | /* Since we have more credit, check |
649 | if more data can be sent */ | |
650 | send_more_port_data(edge_serial, | |
651 | edge_port); | |
1da177e4 LT |
652 | } |
653 | } | |
654 | position += 2; | |
655 | ++portNumber; | |
656 | } | |
657 | } | |
658 | ||
659 | exit: | |
03f0dbf7 AC |
660 | result = usb_submit_urb(urb, GFP_ATOMIC); |
661 | if (result) | |
662 | dev_err(&urb->dev->dev, | |
663 | "%s - Error %d submitting control urb\n", | |
664 | __func__, result); | |
1da177e4 LT |
665 | } |
666 | ||
667 | ||
668 | /***************************************************************************** | |
669 | * edge_bulk_in_callback | |
03f0dbf7 | 670 | * this is the callback function for when we have received data on the |
1da177e4 LT |
671 | * bulk in endpoint. |
672 | *****************************************************************************/ | |
03f0dbf7 | 673 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 674 | { |
cdc97792 | 675 | struct edgeport_serial *edge_serial = urb->context; |
1da177e4 | 676 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 677 | int retval; |
1da177e4 | 678 | __u16 raw_data_length; |
2a393f5f | 679 | int status = urb->status; |
1da177e4 | 680 | |
441b62c1 | 681 | dbg("%s", __func__); |
1da177e4 | 682 | |
2a393f5f GKH |
683 | if (status) { |
684 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 685 | __func__, status); |
cb8eaa8b | 686 | edge_serial->read_in_progress = false; |
1da177e4 LT |
687 | return; |
688 | } | |
689 | ||
690 | if (urb->actual_length == 0) { | |
441b62c1 | 691 | dbg("%s - read bulk callback with no data", __func__); |
cb8eaa8b | 692 | edge_serial->read_in_progress = false; |
1da177e4 LT |
693 | return; |
694 | } | |
695 | ||
696 | raw_data_length = urb->actual_length; | |
697 | ||
03f0dbf7 AC |
698 | usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, |
699 | __func__, raw_data_length, data); | |
1da177e4 LT |
700 | |
701 | spin_lock(&edge_serial->es_lock); | |
702 | ||
703 | /* decrement our rxBytes available by the number that we just got */ | |
704 | edge_serial->rxBytesAvail -= raw_data_length; | |
705 | ||
03f0dbf7 AC |
706 | dbg("%s - Received = %d, rxBytesAvail %d", __func__, |
707 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 708 | |
03f0dbf7 | 709 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
710 | |
711 | /* check to see if there's any more data for us to read */ | |
712 | if (edge_serial->rxBytesAvail > 0) { | |
441b62c1 | 713 | dbg("%s - posting a read", __func__); |
2a393f5f GKH |
714 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
715 | if (retval) { | |
716 | dev_err(&urb->dev->dev, | |
717 | "%s - usb_submit_urb(read bulk) failed, " | |
441b62c1 | 718 | "retval = %d\n", __func__, retval); |
cb8eaa8b | 719 | edge_serial->read_in_progress = false; |
1da177e4 LT |
720 | } |
721 | } else { | |
cb8eaa8b | 722 | edge_serial->read_in_progress = false; |
1da177e4 LT |
723 | } |
724 | ||
725 | spin_unlock(&edge_serial->es_lock); | |
726 | } | |
727 | ||
728 | ||
729 | /***************************************************************************** | |
730 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
731 | * this is the callback function for when we have finished sending |
732 | * serial data on the bulk out endpoint. | |
1da177e4 | 733 | *****************************************************************************/ |
03f0dbf7 | 734 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 735 | { |
cdc97792 | 736 | struct edgeport_port *edge_port = urb->context; |
1da177e4 | 737 | struct tty_struct *tty; |
2a393f5f | 738 | int status = urb->status; |
1da177e4 | 739 | |
441b62c1 | 740 | dbg("%s", __func__); |
1da177e4 | 741 | |
2a393f5f GKH |
742 | if (status) { |
743 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 744 | __func__, status); |
1da177e4 LT |
745 | } |
746 | ||
4a90f09b | 747 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
748 | |
749 | if (tty && edge_port->open) { | |
03f0dbf7 AC |
750 | /* let the tty driver wakeup if it has a special |
751 | write_wakeup function */ | |
1da177e4 LT |
752 | tty_wakeup(tty); |
753 | } | |
4a90f09b | 754 | tty_kref_put(tty); |
1da177e4 | 755 | |
03f0dbf7 | 756 | /* Release the Write URB */ |
cb8eaa8b | 757 | edge_port->write_in_progress = false; |
1da177e4 | 758 | |
03f0dbf7 AC |
759 | /* Check if more data needs to be sent */ |
760 | send_more_port_data((struct edgeport_serial *) | |
761 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
762 | } |
763 | ||
764 | ||
765 | /***************************************************************************** | |
766 | * BulkOutCmdCallback | |
03f0dbf7 AC |
767 | * this is the callback function for when we have finished sending a |
768 | * command on the bulk out endpoint. | |
1da177e4 | 769 | *****************************************************************************/ |
03f0dbf7 | 770 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 771 | { |
cdc97792 | 772 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
773 | struct tty_struct *tty; |
774 | int status = urb->status; | |
775 | ||
441b62c1 | 776 | dbg("%s", __func__); |
1da177e4 | 777 | |
96c706ed | 778 | atomic_dec(&CmdUrbs); |
03f0dbf7 AC |
779 | dbg("%s - FREE URB %p (outstanding %d)", __func__, |
780 | urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
781 | |
782 | ||
783 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 784 | kfree(urb->transfer_buffer); |
1da177e4 LT |
785 | |
786 | /* Free the command urb */ | |
03f0dbf7 | 787 | usb_free_urb(urb); |
1da177e4 LT |
788 | |
789 | if (status) { | |
03f0dbf7 AC |
790 | dbg("%s - nonzero write bulk status received: %d", |
791 | __func__, status); | |
1da177e4 LT |
792 | return; |
793 | } | |
794 | ||
795 | /* Get pointer to tty */ | |
4a90f09b | 796 | tty = tty_port_tty_get(&edge_port->port->port); |
1da177e4 LT |
797 | |
798 | /* tell the tty driver that something has changed */ | |
799 | if (tty && edge_port->open) | |
800 | tty_wakeup(tty); | |
4a90f09b | 801 | tty_kref_put(tty); |
1da177e4 LT |
802 | |
803 | /* we have completed the command */ | |
cb8eaa8b | 804 | edge_port->commandPending = false; |
1da177e4 LT |
805 | wake_up(&edge_port->wait_command); |
806 | } | |
807 | ||
808 | ||
809 | /***************************************************************************** | |
810 | * Driver tty interface functions | |
811 | *****************************************************************************/ | |
812 | ||
813 | /***************************************************************************** | |
814 | * SerialOpen | |
815 | * this function is called by the tty driver when a port is opened | |
816 | * If successful, we return 0 | |
817 | * Otherwise we return a negative error number. | |
818 | *****************************************************************************/ | |
a509a7e4 | 819 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
820 | { |
821 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
822 | struct usb_serial *serial; | |
823 | struct edgeport_serial *edge_serial; | |
824 | int response; | |
825 | ||
441b62c1 | 826 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
827 | |
828 | if (edge_port == NULL) | |
829 | return -ENODEV; | |
830 | ||
03f0dbf7 AC |
831 | /* see if we've set up our endpoint info yet (can't set it up |
832 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
833 | serial = port->serial; |
834 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 835 | if (edge_serial == NULL) |
1da177e4 | 836 | return -ENODEV; |
1da177e4 LT |
837 | if (edge_serial->interrupt_in_buffer == NULL) { |
838 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 839 | |
1da177e4 | 840 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
841 | edge_serial->interrupt_in_buffer = |
842 | port0->interrupt_in_buffer; | |
843 | edge_serial->interrupt_in_endpoint = | |
844 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
845 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
846 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
847 | edge_serial->bulk_in_endpoint = |
848 | port0->bulk_in_endpointAddress; | |
1da177e4 | 849 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
850 | edge_serial->bulk_out_endpoint = |
851 | port0->bulk_out_endpointAddress; | |
852 | ||
1da177e4 LT |
853 | /* set up our interrupt urb */ |
854 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
855 | serial->dev, |
856 | usb_rcvintpipe(serial->dev, | |
857 | port0->interrupt_in_endpointAddress), | |
858 | port0->interrupt_in_buffer, | |
859 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
860 | edge_interrupt_callback, edge_serial, | |
861 | edge_serial->interrupt_read_urb->interval); | |
862 | ||
1da177e4 LT |
863 | /* set up our bulk in urb */ |
864 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
865 | usb_rcvbulkpipe(serial->dev, |
866 | port0->bulk_in_endpointAddress), | |
867 | port0->bulk_in_buffer, | |
868 | edge_serial->read_urb->transfer_buffer_length, | |
869 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 870 | edge_serial->read_in_progress = false; |
1da177e4 LT |
871 | |
872 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
873 | * this interrupt will continue as long |
874 | * as the edgeport is connected */ | |
875 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
876 | GFP_KERNEL); | |
1da177e4 | 877 | if (response) { |
03f0dbf7 AC |
878 | dev_err(&port->dev, |
879 | "%s - Error %d submitting control urb\n", | |
880 | __func__, response); | |
1da177e4 LT |
881 | } |
882 | } | |
03f0dbf7 | 883 | |
1da177e4 LT |
884 | /* initialize our wait queues */ |
885 | init_waitqueue_head(&edge_port->wait_open); | |
886 | init_waitqueue_head(&edge_port->wait_chase); | |
887 | init_waitqueue_head(&edge_port->delta_msr_wait); | |
888 | init_waitqueue_head(&edge_port->wait_command); | |
889 | ||
890 | /* initialize our icount structure */ | |
03f0dbf7 | 891 | memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); |
1da177e4 LT |
892 | |
893 | /* initialize our port settings */ | |
03f0dbf7 AC |
894 | edge_port->txCredits = 0; /* Can't send any data yet */ |
895 | /* Must always set this bit to enable ints! */ | |
896 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 897 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
898 | |
899 | /* send a open port command */ | |
cb8eaa8b RK |
900 | edge_port->openPending = true; |
901 | edge_port->open = false; | |
03f0dbf7 | 902 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
903 | |
904 | if (response < 0) { | |
03f0dbf7 AC |
905 | dev_err(&port->dev, "%s - error sending open port command\n", |
906 | __func__); | |
cb8eaa8b | 907 | edge_port->openPending = false; |
1da177e4 LT |
908 | return -ENODEV; |
909 | } | |
910 | ||
911 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
912 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
913 | OPEN_TIMEOUT); | |
1da177e4 | 914 | |
cb8eaa8b | 915 | if (!edge_port->open) { |
1da177e4 | 916 | /* open timed out */ |
441b62c1 | 917 | dbg("%s - open timedout", __func__); |
cb8eaa8b | 918 | edge_port->openPending = false; |
1da177e4 LT |
919 | return -ENODEV; |
920 | } | |
921 | ||
922 | /* create the txfifo */ | |
923 | edge_port->txfifo.head = 0; | |
924 | edge_port->txfifo.tail = 0; | |
925 | edge_port->txfifo.count = 0; | |
926 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 927 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
928 | |
929 | if (!edge_port->txfifo.fifo) { | |
441b62c1 | 930 | dbg("%s - no memory", __func__); |
335f8514 | 931 | edge_close(port); |
1da177e4 LT |
932 | return -ENOMEM; |
933 | } | |
934 | ||
935 | /* Allocate a URB for the write */ | |
03f0dbf7 | 936 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 937 | edge_port->write_in_progress = false; |
1da177e4 LT |
938 | |
939 | if (!edge_port->write_urb) { | |
441b62c1 | 940 | dbg("%s - no memory", __func__); |
335f8514 | 941 | edge_close(port); |
1da177e4 LT |
942 | return -ENOMEM; |
943 | } | |
944 | ||
03f0dbf7 AC |
945 | dbg("%s(%d) - Initialize TX fifo to %d bytes", |
946 | __func__, port->number, edge_port->maxTxCredits); | |
1da177e4 | 947 | |
441b62c1 | 948 | dbg("%s exited", __func__); |
1da177e4 LT |
949 | |
950 | return 0; | |
951 | } | |
952 | ||
953 | ||
954 | /************************************************************************ | |
955 | * | |
956 | * block_until_chase_response | |
957 | * | |
958 | * This function will block the close until one of the following: | |
959 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 960 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
961 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
962 | * | |
963 | ************************************************************************/ | |
964 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
965 | { | |
966 | DEFINE_WAIT(wait); | |
967 | __u16 lastCredits; | |
968 | int timeout = 1*HZ; | |
969 | int loop = 10; | |
970 | ||
971 | while (1) { | |
03f0dbf7 | 972 | /* Save Last credits */ |
1da177e4 LT |
973 | lastCredits = edge_port->txCredits; |
974 | ||
03f0dbf7 | 975 | /* Did we get our Chase response */ |
cb8eaa8b | 976 | if (!edge_port->chaseResponsePending) { |
441b62c1 | 977 | dbg("%s - Got Chase Response", __func__); |
1da177e4 | 978 | |
03f0dbf7 AC |
979 | /* did we get all of our credit back? */ |
980 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
441b62c1 | 981 | dbg("%s - Got all credits", __func__); |
1da177e4 LT |
982 | return; |
983 | } | |
984 | } | |
985 | ||
03f0dbf7 AC |
986 | /* Block the thread for a while */ |
987 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
988 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
989 | schedule_timeout(timeout); |
990 | finish_wait(&edge_port->wait_chase, &wait); | |
991 | ||
992 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 993 | /* No activity.. count down. */ |
1da177e4 LT |
994 | loop--; |
995 | if (loop == 0) { | |
cb8eaa8b | 996 | edge_port->chaseResponsePending = false; |
441b62c1 | 997 | dbg("%s - Chase TIMEOUT", __func__); |
1da177e4 LT |
998 | return; |
999 | } | |
1000 | } else { | |
03f0dbf7 AC |
1001 | /* Reset timeout value back to 10 seconds */ |
1002 | dbg("%s - Last %d, Current %d", __func__, | |
1003 | lastCredits, edge_port->txCredits); | |
1da177e4 LT |
1004 | loop = 10; |
1005 | } | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | ||
1010 | /************************************************************************ | |
1011 | * | |
1012 | * block_until_tx_empty | |
1013 | * | |
1014 | * This function will block the close until one of the following: | |
1015 | * 1. TX count are 0 | |
1016 | * 2. The edgeport has stopped | |
dc0d5c1e | 1017 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
1018 | * |
1019 | ************************************************************************/ | |
03f0dbf7 | 1020 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 LT |
1021 | { |
1022 | DEFINE_WAIT(wait); | |
1023 | struct TxFifo *fifo = &edge_port->txfifo; | |
1024 | __u32 lastCount; | |
1025 | int timeout = HZ/10; | |
1026 | int loop = 30; | |
1027 | ||
1028 | while (1) { | |
03f0dbf7 | 1029 | /* Save Last count */ |
1da177e4 LT |
1030 | lastCount = fifo->count; |
1031 | ||
03f0dbf7 | 1032 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1033 | if (lastCount == 0) { |
441b62c1 | 1034 | dbg("%s - TX Buffer Empty", __func__); |
1da177e4 LT |
1035 | return; |
1036 | } | |
1037 | ||
03f0dbf7 AC |
1038 | /* Block the thread for a while */ |
1039 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1040 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1041 | schedule_timeout(timeout); |
1042 | finish_wait(&edge_port->wait_chase, &wait); | |
1043 | ||
441b62c1 | 1044 | dbg("%s wait", __func__); |
1da177e4 LT |
1045 | |
1046 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1047 | /* No activity.. count down. */ |
1da177e4 LT |
1048 | loop--; |
1049 | if (loop == 0) { | |
441b62c1 | 1050 | dbg("%s - TIMEOUT", __func__); |
1da177e4 LT |
1051 | return; |
1052 | } | |
1053 | } else { | |
03f0dbf7 | 1054 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1055 | loop = 30; |
1056 | } | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | ||
1061 | /***************************************************************************** | |
1062 | * edge_close | |
1063 | * this function is called by the tty driver when a port is closed | |
1064 | *****************************************************************************/ | |
335f8514 | 1065 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1066 | { |
1067 | struct edgeport_serial *edge_serial; | |
1068 | struct edgeport_port *edge_port; | |
1069 | int status; | |
1070 | ||
441b62c1 | 1071 | dbg("%s - port %d", __func__, port->number); |
03f0dbf7 | 1072 | |
1da177e4 LT |
1073 | edge_serial = usb_get_serial_data(port->serial); |
1074 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1075 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1076 | return; |
03f0dbf7 AC |
1077 | |
1078 | /* block until tx is empty */ | |
1da177e4 LT |
1079 | block_until_tx_empty(edge_port); |
1080 | ||
cb8eaa8b | 1081 | edge_port->closePending = true; |
1da177e4 | 1082 | |
6e8cf775 GKH |
1083 | if ((!edge_serial->is_epic) || |
1084 | ((edge_serial->is_epic) && | |
1085 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1086 | /* flush and chase */ | |
cb8eaa8b | 1087 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1088 | |
441b62c1 | 1089 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
03f0dbf7 AC |
1090 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1091 | if (status == 0) | |
1092 | /* block until chase finished */ | |
6e8cf775 | 1093 | block_until_chase_response(edge_port); |
03f0dbf7 | 1094 | else |
cb8eaa8b | 1095 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1096 | } |
1097 | ||
6e8cf775 GKH |
1098 | if ((!edge_serial->is_epic) || |
1099 | ((edge_serial->is_epic) && | |
1100 | (edge_serial->epic_descriptor.Supports.IOSPClose))) { | |
1101 | /* close the port */ | |
441b62c1 | 1102 | dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__); |
03f0dbf7 | 1103 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1104 | } |
1da177e4 | 1105 | |
03f0dbf7 | 1106 | /* port->close = true; */ |
cb8eaa8b RK |
1107 | edge_port->closePending = false; |
1108 | edge_port->open = false; | |
1109 | edge_port->openPending = false; | |
1da177e4 | 1110 | |
9a25f44f | 1111 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1112 | |
1113 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1114 | /* if this urb had a transfer buffer already |
1115 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1116 | kfree(edge_port->write_urb->transfer_buffer); |
1117 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1118 | edge_port->write_urb = NULL; |
1119 | } | |
1bc3c9e1 JJ |
1120 | kfree(edge_port->txfifo.fifo); |
1121 | edge_port->txfifo.fifo = NULL; | |
1da177e4 | 1122 | |
441b62c1 | 1123 | dbg("%s exited", __func__); |
03f0dbf7 | 1124 | } |
1da177e4 LT |
1125 | |
1126 | /***************************************************************************** | |
1127 | * SerialWrite | |
03f0dbf7 AC |
1128 | * this function is called by the tty driver when data should be written |
1129 | * to the port. | |
1130 | * If successful, we return the number of bytes written, otherwise we | |
1131 | * return a negative error number. | |
1da177e4 | 1132 | *****************************************************************************/ |
95da310e AC |
1133 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1134 | const unsigned char *data, int count) | |
1da177e4 LT |
1135 | { |
1136 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1137 | struct TxFifo *fifo; | |
1138 | int copySize; | |
1139 | int bytesleft; | |
1140 | int firsthalf; | |
1141 | int secondhalf; | |
1142 | unsigned long flags; | |
1143 | ||
441b62c1 | 1144 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1145 | |
1146 | if (edge_port == NULL) | |
1147 | return -ENODEV; | |
1148 | ||
03f0dbf7 | 1149 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1150 | fifo = &edge_port->txfifo; |
1151 | ||
1152 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1153 | ||
03f0dbf7 AC |
1154 | /* calculate number of bytes to put in fifo */ |
1155 | copySize = min((unsigned int)count, | |
1156 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1157 | |
03f0dbf7 AC |
1158 | dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", |
1159 | __func__, port->number, count, | |
1160 | edge_port->txCredits - fifo->count, copySize); | |
1da177e4 | 1161 | |
03f0dbf7 AC |
1162 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1163 | and when txCredits is empty */ | |
1da177e4 | 1164 | if (copySize == 0) { |
441b62c1 | 1165 | dbg("%s - copySize = Zero", __func__); |
1da177e4 LT |
1166 | goto finish_write; |
1167 | } | |
1168 | ||
03f0dbf7 AC |
1169 | /* queue the data |
1170 | * since we can never overflow the buffer we do not have to check for a | |
1171 | * full condition | |
1172 | * | |
1173 | * the copy is done is two parts -- first fill to the end of the buffer | |
1174 | * then copy the reset from the start of the buffer | |
1175 | */ | |
1da177e4 | 1176 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 AC |
1177 | firsthalf = min(bytesleft, copySize); |
1178 | dbg("%s - copy %d bytes of %d into fifo ", __func__, | |
1179 | firsthalf, bytesleft); | |
1da177e4 LT |
1180 | |
1181 | /* now copy our data */ | |
1182 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
03f0dbf7 AC |
1183 | usb_serial_debug_data(debug, &port->dev, __func__, |
1184 | firsthalf, &fifo->fifo[fifo->head]); | |
1da177e4 | 1185 | |
03f0dbf7 | 1186 | /* update the index and size */ |
1da177e4 LT |
1187 | fifo->head += firsthalf; |
1188 | fifo->count += firsthalf; | |
1189 | ||
03f0dbf7 AC |
1190 | /* wrap the index */ |
1191 | if (fifo->head == fifo->size) | |
1da177e4 | 1192 | fifo->head = 0; |
1da177e4 LT |
1193 | |
1194 | secondhalf = copySize-firsthalf; | |
1195 | ||
1196 | if (secondhalf) { | |
441b62c1 | 1197 | dbg("%s - copy rest of data %d", __func__, secondhalf); |
1da177e4 | 1198 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
03f0dbf7 AC |
1199 | usb_serial_debug_data(debug, &port->dev, __func__, |
1200 | secondhalf, &fifo->fifo[fifo->head]); | |
1201 | /* update the index and size */ | |
1da177e4 LT |
1202 | fifo->count += secondhalf; |
1203 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1204 | /* No need to check for wrap since we can not get to end of |
1205 | * the fifo in this part | |
1206 | */ | |
1da177e4 LT |
1207 | } |
1208 | ||
1209 | finish_write: | |
1210 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1211 | ||
03f0dbf7 AC |
1212 | send_more_port_data((struct edgeport_serial *) |
1213 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1214 | |
03f0dbf7 AC |
1215 | dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__, |
1216 | copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1217 | |
03f0dbf7 | 1218 | return copySize; |
1da177e4 LT |
1219 | } |
1220 | ||
1221 | ||
1222 | /************************************************************************ | |
1223 | * | |
1224 | * send_more_port_data() | |
1225 | * | |
1226 | * This routine attempts to write additional UART transmit data | |
1227 | * to a port over the USB bulk pipe. It is called (1) when new | |
1228 | * data has been written to a port's TxBuffer from higher layers | |
1229 | * (2) when the peripheral sends us additional TxCredits indicating | |
1230 | * that it can accept more Tx data for a given port; and (3) when | |
1231 | * a bulk write completes successfully and we want to see if we | |
1232 | * can transmit more. | |
1233 | * | |
1234 | ************************************************************************/ | |
03f0dbf7 AC |
1235 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1236 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1237 | { |
1238 | struct TxFifo *fifo = &edge_port->txfifo; | |
1239 | struct urb *urb; | |
1240 | unsigned char *buffer; | |
1241 | int status; | |
1242 | int count; | |
1243 | int bytesleft; | |
1244 | int firsthalf; | |
1245 | int secondhalf; | |
1246 | unsigned long flags; | |
1247 | ||
441b62c1 | 1248 | dbg("%s(%d)", __func__, edge_port->port->number); |
1da177e4 LT |
1249 | |
1250 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1251 | ||
1252 | if (edge_port->write_in_progress || | |
1253 | !edge_port->open || | |
1254 | (fifo->count == 0)) { | |
03f0dbf7 AC |
1255 | dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", |
1256 | __func__, edge_port->port->number, | |
1257 | fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1258 | goto exit_send; |
1259 | } | |
1260 | ||
03f0dbf7 AC |
1261 | /* since the amount of data in the fifo will always fit into the |
1262 | * edgeport buffer we do not need to check the write length | |
1263 | * | |
1264 | * Do we have enough credits for this port to make it worthwhile | |
1265 | * to bother queueing a write. If it's too small, say a few bytes, | |
1266 | * it's better to wait for more credits so we can do a larger write. | |
1267 | */ | |
1268 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
1269 | dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", | |
1270 | __func__, edge_port->port->number, fifo->count, | |
1271 | edge_port->txCredits); | |
1da177e4 LT |
1272 | goto exit_send; |
1273 | } | |
1274 | ||
03f0dbf7 | 1275 | /* lock this write */ |
cb8eaa8b | 1276 | edge_port->write_in_progress = true; |
1da177e4 | 1277 | |
03f0dbf7 | 1278 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1279 | urb = edge_port->write_urb; |
1280 | ||
1bc3c9e1 JJ |
1281 | /* make sure transfer buffer is freed */ |
1282 | kfree(urb->transfer_buffer); | |
1283 | urb->transfer_buffer = NULL; | |
1da177e4 | 1284 | |
03f0dbf7 AC |
1285 | /* build the data header for the buffer and port that we are about |
1286 | to send out */ | |
1da177e4 | 1287 | count = fifo->count; |
03f0dbf7 | 1288 | buffer = kmalloc(count+2, GFP_ATOMIC); |
1da177e4 | 1289 | if (buffer == NULL) { |
22a416c4 | 1290 | dev_err_console(edge_port->port, |
03f0dbf7 | 1291 | "%s - no more kernel memory...\n", __func__); |
cb8eaa8b | 1292 | edge_port->write_in_progress = false; |
1da177e4 LT |
1293 | goto exit_send; |
1294 | } | |
03f0dbf7 AC |
1295 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number |
1296 | - edge_port->port->serial->minor, count); | |
1297 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number | |
1298 | - edge_port->port->serial->minor, count); | |
1da177e4 LT |
1299 | |
1300 | /* now copy our data */ | |
1301 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1302 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1303 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1304 | fifo->tail += firsthalf; | |
1305 | fifo->count -= firsthalf; | |
03f0dbf7 | 1306 | if (fifo->tail == fifo->size) |
1da177e4 | 1307 | fifo->tail = 0; |
1da177e4 LT |
1308 | |
1309 | secondhalf = count-firsthalf; | |
1310 | if (secondhalf) { | |
03f0dbf7 AC |
1311 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1312 | secondhalf); | |
1da177e4 LT |
1313 | fifo->tail += secondhalf; |
1314 | fifo->count -= secondhalf; | |
1315 | } | |
1316 | ||
1317 | if (count) | |
03f0dbf7 AC |
1318 | usb_serial_debug_data(debug, &edge_port->port->dev, |
1319 | __func__, count, &buffer[2]); | |
1da177e4 LT |
1320 | |
1321 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1322 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1323 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1324 | edge_serial->bulk_out_endpoint), | |
1325 | buffer, count+2, | |
1326 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1327 | |
1328 | /* decrement the number of credits we have by the number we just sent */ | |
1329 | edge_port->txCredits -= count; | |
1330 | edge_port->icount.tx += count; | |
1331 | ||
1da177e4 LT |
1332 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1333 | if (status) { | |
1334 | /* something went wrong */ | |
22a416c4 | 1335 | dev_err_console(edge_port->port, |
03f0dbf7 AC |
1336 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", |
1337 | __func__, status); | |
cb8eaa8b | 1338 | edge_port->write_in_progress = false; |
1da177e4 LT |
1339 | |
1340 | /* revert the credits as something bad happened. */ | |
1341 | edge_port->txCredits += count; | |
1342 | edge_port->icount.tx -= count; | |
1343 | } | |
03f0dbf7 AC |
1344 | dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", |
1345 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1346 | |
1347 | exit_send: | |
1348 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1349 | } | |
1350 | ||
1351 | ||
1352 | /***************************************************************************** | |
1353 | * edge_write_room | |
03f0dbf7 AC |
1354 | * this function is called by the tty driver when it wants to know how |
1355 | * many bytes of data we can accept for a specific port. If successful, | |
1356 | * we return the amount of room that we have for this port (the txCredits) | |
1357 | * otherwise we return a negative error number. | |
1da177e4 | 1358 | *****************************************************************************/ |
95da310e | 1359 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1360 | { |
95da310e | 1361 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1362 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1363 | int room; | |
1364 | unsigned long flags; | |
1365 | ||
441b62c1 | 1366 | dbg("%s", __func__); |
1da177e4 LT |
1367 | |
1368 | if (edge_port == NULL) | |
d76f2f44 | 1369 | return 0; |
cb8eaa8b | 1370 | if (edge_port->closePending) |
d76f2f44 | 1371 | return 0; |
1da177e4 | 1372 | |
441b62c1 | 1373 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1374 | |
1375 | if (!edge_port->open) { | |
441b62c1 | 1376 | dbg("%s - port not opened", __func__); |
d76f2f44 | 1377 | return 0; |
1da177e4 LT |
1378 | } |
1379 | ||
03f0dbf7 | 1380 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1381 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1382 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1383 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1384 | ||
441b62c1 | 1385 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
1386 | return room; |
1387 | } | |
1388 | ||
1389 | ||
1390 | /***************************************************************************** | |
1391 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1392 | * this function is called by the tty driver when it wants to know how |
1393 | * many bytes of data we currently have outstanding in the port (data that | |
1394 | * has been written, but hasn't made it out the port yet) | |
1395 | * If successful, we return the number of bytes left to be written in the | |
1396 | * system, | |
1da177e4 LT |
1397 | * Otherwise we return a negative error number. |
1398 | *****************************************************************************/ | |
95da310e | 1399 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1400 | { |
95da310e | 1401 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1402 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1403 | int num_chars; | |
1404 | unsigned long flags; | |
1405 | ||
441b62c1 | 1406 | dbg("%s", __func__); |
1da177e4 LT |
1407 | |
1408 | if (edge_port == NULL) | |
d76f2f44 | 1409 | return 0; |
cb8eaa8b | 1410 | if (edge_port->closePending) |
d76f2f44 | 1411 | return 0; |
1da177e4 LT |
1412 | |
1413 | if (!edge_port->open) { | |
441b62c1 | 1414 | dbg("%s - port not opened", __func__); |
d76f2f44 | 1415 | return 0; |
1da177e4 LT |
1416 | } |
1417 | ||
1418 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1419 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1420 | edge_port->txfifo.count; | |
1da177e4 LT |
1421 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1422 | if (num_chars) { | |
03f0dbf7 AC |
1423 | dbg("%s(port %d) - returns %d", __func__, |
1424 | port->number, num_chars); | |
1da177e4 LT |
1425 | } |
1426 | ||
1427 | return num_chars; | |
1428 | } | |
1429 | ||
1430 | ||
1431 | /***************************************************************************** | |
1432 | * SerialThrottle | |
1433 | * this function is called by the tty driver when it wants to stop the data | |
1434 | * being read from the port. | |
1435 | *****************************************************************************/ | |
95da310e | 1436 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1437 | { |
95da310e | 1438 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1439 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1440 | int status; |
1441 | ||
441b62c1 | 1442 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1443 | |
1444 | if (edge_port == NULL) | |
1445 | return; | |
1446 | ||
1447 | if (!edge_port->open) { | |
441b62c1 | 1448 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1449 | return; |
1450 | } | |
1451 | ||
1da177e4 LT |
1452 | /* if we are implementing XON/XOFF, send the stop character */ |
1453 | if (I_IXOFF(tty)) { | |
1454 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1455 | status = edge_write(tty, port, &stop_char, 1); |
1456 | if (status <= 0) | |
1da177e4 | 1457 | return; |
1da177e4 LT |
1458 | } |
1459 | ||
1460 | /* if we are implementing RTS/CTS, toggle that line */ | |
adc8d746 | 1461 | if (tty->termios.c_cflag & CRTSCTS) { |
1da177e4 | 1462 | edge_port->shadowMCR &= ~MCR_RTS; |
03f0dbf7 AC |
1463 | status = send_cmd_write_uart_register(edge_port, MCR, |
1464 | edge_port->shadowMCR); | |
1465 | if (status != 0) | |
1da177e4 | 1466 | return; |
1da177e4 | 1467 | } |
1da177e4 LT |
1468 | } |
1469 | ||
1470 | ||
1471 | /***************************************************************************** | |
1472 | * edge_unthrottle | |
03f0dbf7 AC |
1473 | * this function is called by the tty driver when it wants to resume the |
1474 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1475 | *****************************************************************************/ |
95da310e | 1476 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1477 | { |
95da310e | 1478 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1479 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1480 | int status; |
1481 | ||
441b62c1 | 1482 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1483 | |
1484 | if (edge_port == NULL) | |
1485 | return; | |
1486 | ||
1487 | if (!edge_port->open) { | |
441b62c1 | 1488 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1489 | return; |
1490 | } | |
1491 | ||
1da177e4 LT |
1492 | /* if we are implementing XON/XOFF, send the start character */ |
1493 | if (I_IXOFF(tty)) { | |
1494 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1495 | status = edge_write(tty, port, &start_char, 1); |
1496 | if (status <= 0) | |
1da177e4 | 1497 | return; |
1da177e4 | 1498 | } |
1da177e4 | 1499 | /* if we are implementing RTS/CTS, toggle that line */ |
adc8d746 | 1500 | if (tty->termios.c_cflag & CRTSCTS) { |
1da177e4 | 1501 | edge_port->shadowMCR |= MCR_RTS; |
03f0dbf7 AC |
1502 | send_cmd_write_uart_register(edge_port, MCR, |
1503 | edge_port->shadowMCR); | |
1da177e4 | 1504 | } |
1da177e4 LT |
1505 | } |
1506 | ||
1507 | ||
1508 | /***************************************************************************** | |
1509 | * SerialSetTermios | |
03f0dbf7 AC |
1510 | * this function is called by the tty driver when it wants to change |
1511 | * the termios structure | |
1da177e4 | 1512 | *****************************************************************************/ |
95da310e AC |
1513 | static void edge_set_termios(struct tty_struct *tty, |
1514 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1515 | { |
1516 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1517 | unsigned int cflag; |
1518 | ||
adc8d746 | 1519 | cflag = tty->termios.c_cflag; |
441b62c1 | 1520 | dbg("%s - clfag %08x iflag %08x", __func__, |
adc8d746 | 1521 | tty->termios.c_cflag, tty->termios.c_iflag); |
441b62c1 | 1522 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
6ce073bd | 1523 | old_termios->c_cflag, old_termios->c_iflag); |
1da177e4 | 1524 | |
441b62c1 | 1525 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1526 | |
1527 | if (edge_port == NULL) | |
1528 | return; | |
1529 | ||
1530 | if (!edge_port->open) { | |
441b62c1 | 1531 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
1532 | return; |
1533 | } | |
1534 | ||
1535 | /* change the port settings to the new ones specified */ | |
95da310e | 1536 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1537 | } |
1538 | ||
1539 | ||
1540 | /***************************************************************************** | |
1541 | * get_lsr_info - get line status register info | |
1542 | * | |
1543 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1544 | * is emptied. On bus types like RS485, the transmitter must | |
1545 | * release the bus after transmitting. This must be done when | |
1546 | * the transmit shift register is empty, not be done when the | |
1547 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1548 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1549 | *****************************************************************************/ |
03f0dbf7 AC |
1550 | static int get_lsr_info(struct edgeport_port *edge_port, |
1551 | unsigned int __user *value) | |
1da177e4 LT |
1552 | { |
1553 | unsigned int result = 0; | |
1554 | unsigned long flags; | |
1555 | ||
1556 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1557 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1558 | edge_port->txfifo.count == 0) { | |
441b62c1 | 1559 | dbg("%s -- Empty", __func__); |
1da177e4 LT |
1560 | result = TIOCSER_TEMT; |
1561 | } | |
1562 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1563 | ||
1564 | if (copy_to_user(value, &result, sizeof(int))) | |
1565 | return -EFAULT; | |
1566 | return 0; | |
1567 | } | |
1568 | ||
20b9d177 | 1569 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 1570 | unsigned int set, unsigned int clear) |
1da177e4 | 1571 | { |
95da310e | 1572 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1573 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1574 | unsigned int mcr; | |
1575 | ||
441b62c1 | 1576 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1577 | |
1578 | mcr = edge_port->shadowMCR; | |
1579 | if (set & TIOCM_RTS) | |
1580 | mcr |= MCR_RTS; | |
1581 | if (set & TIOCM_DTR) | |
1582 | mcr |= MCR_DTR; | |
1583 | if (set & TIOCM_LOOP) | |
1584 | mcr |= MCR_LOOPBACK; | |
1585 | ||
1586 | if (clear & TIOCM_RTS) | |
1587 | mcr &= ~MCR_RTS; | |
1588 | if (clear & TIOCM_DTR) | |
1589 | mcr &= ~MCR_DTR; | |
1590 | if (clear & TIOCM_LOOP) | |
1591 | mcr &= ~MCR_LOOPBACK; | |
1592 | ||
1593 | edge_port->shadowMCR = mcr; | |
1594 | ||
1595 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
60b33c13 | 1600 | static int edge_tiocmget(struct tty_struct *tty) |
1da177e4 | 1601 | { |
95da310e | 1602 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1603 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1604 | unsigned int result = 0; | |
1605 | unsigned int msr; | |
1606 | unsigned int mcr; | |
1607 | ||
441b62c1 | 1608 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1609 | |
1610 | msr = edge_port->shadowMSR; | |
1611 | mcr = edge_port->shadowMCR; | |
1612 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1613 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1614 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1615 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1616 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1617 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1618 | ||
1619 | ||
441b62c1 | 1620 | dbg("%s -- %x", __func__, result); |
1da177e4 LT |
1621 | |
1622 | return result; | |
1623 | } | |
1624 | ||
0bca1b91 AC |
1625 | static int edge_get_icount(struct tty_struct *tty, |
1626 | struct serial_icounter_struct *icount) | |
1627 | { | |
1628 | struct usb_serial_port *port = tty->driver_data; | |
1629 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1630 | struct async_icount cnow; | |
1631 | cnow = edge_port->icount; | |
1632 | ||
1633 | icount->cts = cnow.cts; | |
1634 | icount->dsr = cnow.dsr; | |
1635 | icount->rng = cnow.rng; | |
1636 | icount->dcd = cnow.dcd; | |
1637 | icount->rx = cnow.rx; | |
1638 | icount->tx = cnow.tx; | |
1639 | icount->frame = cnow.frame; | |
1640 | icount->overrun = cnow.overrun; | |
1641 | icount->parity = cnow.parity; | |
1642 | icount->brk = cnow.brk; | |
1643 | icount->buf_overrun = cnow.buf_overrun; | |
1644 | ||
1645 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", | |
1646 | __func__, port->number, icount->rx, icount->tx); | |
1647 | return 0; | |
1648 | } | |
1649 | ||
03f0dbf7 AC |
1650 | static int get_serial_info(struct edgeport_port *edge_port, |
1651 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1652 | { |
1653 | struct serial_struct tmp; | |
1654 | ||
1655 | if (!retinfo) | |
1656 | return -EFAULT; | |
1657 | ||
1658 | memset(&tmp, 0, sizeof(tmp)); | |
1659 | ||
1660 | tmp.type = PORT_16550A; | |
1661 | tmp.line = edge_port->port->serial->minor; | |
1662 | tmp.port = edge_port->port->number; | |
1663 | tmp.irq = 0; | |
1664 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1665 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1666 | tmp.baud_base = 9600; | |
1667 | tmp.close_delay = 5*HZ; | |
1668 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1669 | |
1670 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1671 | return -EFAULT; | |
1672 | return 0; | |
1673 | } | |
1674 | ||
1675 | ||
1da177e4 LT |
1676 | /***************************************************************************** |
1677 | * SerialIoctl | |
1678 | * this function handles any ioctl calls to the driver | |
1679 | *****************************************************************************/ | |
00a0d0d6 | 1680 | static int edge_ioctl(struct tty_struct *tty, |
95da310e | 1681 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1682 | { |
95da310e | 1683 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1684 | DEFINE_WAIT(wait); |
1685 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1686 | struct async_icount cnow; | |
1687 | struct async_icount cprev; | |
1da177e4 | 1688 | |
441b62c1 | 1689 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
1da177e4 LT |
1690 | |
1691 | switch (cmd) { | |
03f0dbf7 AC |
1692 | case TIOCSERGETLSR: |
1693 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); | |
1694 | return get_lsr_info(edge_port, (unsigned int __user *) arg); | |
1695 | ||
1696 | case TIOCGSERIAL: | |
1697 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); | |
1698 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); | |
1699 | ||
1700 | case TIOCMIWAIT: | |
1701 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
1702 | cprev = edge_port->icount; | |
1703 | while (1) { | |
1704 | prepare_to_wait(&edge_port->delta_msr_wait, | |
1705 | &wait, TASK_INTERRUPTIBLE); | |
1706 | schedule(); | |
1707 | finish_wait(&edge_port->delta_msr_wait, &wait); | |
1708 | /* see if a signal did it */ | |
1709 | if (signal_pending(current)) | |
1710 | return -ERESTARTSYS; | |
1711 | cnow = edge_port->icount; | |
1712 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1713 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1714 | return -EIO; /* no change => error */ | |
1715 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1716 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1717 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
1718 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
1719 | return 0; | |
1da177e4 | 1720 | } |
03f0dbf7 AC |
1721 | cprev = cnow; |
1722 | } | |
1723 | /* NOTREACHED */ | |
1724 | break; | |
1da177e4 | 1725 | |
1da177e4 | 1726 | } |
1da177e4 LT |
1727 | return -ENOIOCTLCMD; |
1728 | } | |
1729 | ||
1730 | ||
1731 | /***************************************************************************** | |
1732 | * SerialBreak | |
1733 | * this function sends a break to the port | |
1734 | *****************************************************************************/ | |
03f0dbf7 | 1735 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1736 | { |
95da310e | 1737 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1738 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1739 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1740 | int status; |
1741 | ||
6e8cf775 GKH |
1742 | if ((!edge_serial->is_epic) || |
1743 | ((edge_serial->is_epic) && | |
1744 | (edge_serial->epic_descriptor.Supports.IOSPChase))) { | |
1745 | /* flush and chase */ | |
cb8eaa8b | 1746 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1747 | |
441b62c1 | 1748 | dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__); |
03f0dbf7 | 1749 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1750 | if (status == 0) { |
03f0dbf7 | 1751 | /* block until chase finished */ |
6e8cf775 GKH |
1752 | block_until_chase_response(edge_port); |
1753 | } else { | |
cb8eaa8b | 1754 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1755 | } |
1da177e4 LT |
1756 | } |
1757 | ||
6e8cf775 GKH |
1758 | if ((!edge_serial->is_epic) || |
1759 | ((edge_serial->is_epic) && | |
1760 | (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) { | |
1761 | if (break_state == -1) { | |
441b62c1 | 1762 | dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__); |
03f0dbf7 AC |
1763 | status = send_iosp_ext_cmd(edge_port, |
1764 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1765 | } else { |
441b62c1 | 1766 | dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__); |
03f0dbf7 AC |
1767 | status = send_iosp_ext_cmd(edge_port, |
1768 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1769 | } |
03f0dbf7 AC |
1770 | if (status) |
1771 | dbg("%s - error sending break set/clear command.", | |
1772 | __func__); | |
1da177e4 | 1773 | } |
1da177e4 LT |
1774 | } |
1775 | ||
1776 | ||
1777 | /***************************************************************************** | |
1778 | * process_rcvd_data | |
1779 | * this function handles the data received on the bulk in pipe. | |
1780 | *****************************************************************************/ | |
03f0dbf7 AC |
1781 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1782 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 LT |
1783 | { |
1784 | struct usb_serial_port *port; | |
1785 | struct edgeport_port *edge_port; | |
1786 | struct tty_struct *tty; | |
1787 | __u16 lastBufferLength; | |
1788 | __u16 rxLen; | |
1789 | ||
441b62c1 | 1790 | dbg("%s", __func__); |
1da177e4 LT |
1791 | |
1792 | lastBufferLength = bufferLength + 1; | |
1793 | ||
1794 | while (bufferLength > 0) { | |
1795 | /* failsafe incase we get a message that we don't understand */ | |
1796 | if (lastBufferLength == bufferLength) { | |
441b62c1 | 1797 | dbg("%s - stuck in loop, exiting it.", __func__); |
1da177e4 LT |
1798 | break; |
1799 | } | |
1800 | lastBufferLength = bufferLength; | |
1801 | ||
1802 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1803 | case EXPECT_HDR1: |
1804 | edge_serial->rxHeader1 = *buffer; | |
1805 | ++buffer; | |
1806 | --bufferLength; | |
1da177e4 | 1807 | |
03f0dbf7 AC |
1808 | if (bufferLength == 0) { |
1809 | edge_serial->rxState = EXPECT_HDR2; | |
1810 | break; | |
1811 | } | |
1812 | /* otherwise, drop on through */ | |
1813 | case EXPECT_HDR2: | |
1814 | edge_serial->rxHeader2 = *buffer; | |
1815 | ++buffer; | |
1816 | --bufferLength; | |
1817 | ||
1818 | dbg("%s - Hdr1=%02X Hdr2=%02X", __func__, | |
1819 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
1820 | /* Process depending on whether this header is | |
1821 | * data or status */ | |
1822 | ||
1823 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1824 | /* Decode this status header and go to | |
1825 | * EXPECT_HDR1 (if we can process the status | |
1826 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1827 | * get the third byte. */ | |
1828 | edge_serial->rxPort = | |
1829 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1830 | edge_serial->rxStatusCode = | |
1831 | IOSP_GET_STATUS_CODE( | |
1832 | edge_serial->rxHeader1); | |
1833 | ||
1834 | if (!IOSP_STATUS_IS_2BYTE( | |
1835 | edge_serial->rxStatusCode)) { | |
1836 | /* This status needs additional bytes. | |
1837 | * Save what we have and then wait for | |
1838 | * more data. | |
1839 | */ | |
1840 | edge_serial->rxStatusParam | |
1841 | = edge_serial->rxHeader2; | |
1842 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1843 | break; |
1844 | } | |
03f0dbf7 AC |
1845 | /* We have all the header bytes, process the |
1846 | status now */ | |
1847 | process_rcvd_status(edge_serial, | |
1848 | edge_serial->rxHeader2, 0); | |
1849 | edge_serial->rxState = EXPECT_HDR1; | |
1850 | break; | |
1851 | } else { | |
1852 | edge_serial->rxPort = | |
1853 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1854 | edge_serial->rxBytesRemaining = | |
1855 | IOSP_GET_HDR_DATA_LEN( | |
1856 | edge_serial->rxHeader1, | |
1857 | edge_serial->rxHeader2); | |
1858 | dbg("%s - Data for Port %u Len %u", | |
1859 | __func__, | |
1860 | edge_serial->rxPort, | |
1861 | edge_serial->rxBytesRemaining); | |
1862 | ||
1863 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1864 | * ASSERT(DevExt->RxBytesRemaining < | |
1865 | * IOSP_MAX_DATA_LENGTH); | |
1866 | */ | |
1da177e4 | 1867 | |
03f0dbf7 AC |
1868 | if (bufferLength == 0) { |
1869 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1870 | break; |
1da177e4 | 1871 | } |
03f0dbf7 AC |
1872 | /* Else, drop through */ |
1873 | } | |
1874 | case EXPECT_DATA: /* Expect data */ | |
1875 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1876 | rxLen = bufferLength; | |
1877 | /* Expect data to start next buffer */ | |
1878 | edge_serial->rxState = EXPECT_DATA; | |
1879 | } else { | |
1880 | /* BufLen >= RxBytesRemaining */ | |
1881 | rxLen = edge_serial->rxBytesRemaining; | |
1882 | /* Start another header next time */ | |
1883 | edge_serial->rxState = EXPECT_HDR1; | |
1884 | } | |
1da177e4 | 1885 | |
03f0dbf7 AC |
1886 | bufferLength -= rxLen; |
1887 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1888 | |
03f0dbf7 AC |
1889 | /* spit this data back into the tty driver if this |
1890 | port is open */ | |
1891 | if (rxLen) { | |
1892 | port = edge_serial->serial->port[ | |
1893 | edge_serial->rxPort]; | |
1894 | edge_port = usb_get_serial_port_data(port); | |
1895 | if (edge_port->open) { | |
4a90f09b AC |
1896 | tty = tty_port_tty_get( |
1897 | &edge_port->port->port); | |
03f0dbf7 AC |
1898 | if (tty) { |
1899 | dbg("%s - Sending %d bytes to TTY for port %d", | |
1900 | __func__, rxLen, edge_serial->rxPort); | |
1901 | edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); | |
4a90f09b | 1902 | tty_kref_put(tty); |
1da177e4 | 1903 | } |
03f0dbf7 | 1904 | edge_port->icount.rx += rxLen; |
1da177e4 | 1905 | } |
03f0dbf7 AC |
1906 | buffer += rxLen; |
1907 | } | |
1908 | break; | |
1da177e4 | 1909 | |
03f0dbf7 AC |
1910 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1911 | edge_serial->rxHeader3 = *buffer; | |
1912 | ++buffer; | |
1913 | --bufferLength; | |
1914 | ||
1915 | /* We have all the header bytes, process the | |
1916 | status now */ | |
1917 | process_rcvd_status(edge_serial, | |
1918 | edge_serial->rxStatusParam, | |
1919 | edge_serial->rxHeader3); | |
1920 | edge_serial->rxState = EXPECT_HDR1; | |
1921 | break; | |
1da177e4 LT |
1922 | } |
1923 | } | |
1924 | } | |
1925 | ||
1926 | ||
1927 | /***************************************************************************** | |
1928 | * process_rcvd_status | |
03f0dbf7 AC |
1929 | * this function handles the any status messages received on the |
1930 | * bulk in pipe. | |
1da177e4 | 1931 | *****************************************************************************/ |
03f0dbf7 AC |
1932 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1933 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1934 | { |
1935 | struct usb_serial_port *port; | |
1936 | struct edgeport_port *edge_port; | |
4a90f09b | 1937 | struct tty_struct *tty; |
1da177e4 LT |
1938 | __u8 code = edge_serial->rxStatusCode; |
1939 | ||
1940 | /* switch the port pointer to the one being currently talked about */ | |
1941 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1942 | edge_port = usb_get_serial_port_data(port); | |
1943 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1944 | dev_err(&edge_serial->serial->dev->dev, |
1945 | "%s - edge_port == NULL for port %d\n", | |
1946 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1947 | return; |
1948 | } | |
1949 | ||
441b62c1 | 1950 | dbg("%s - port %d", __func__, edge_serial->rxPort); |
1da177e4 LT |
1951 | |
1952 | if (code == IOSP_EXT_STATUS) { | |
1953 | switch (byte2) { | |
03f0dbf7 AC |
1954 | case IOSP_EXT_STATUS_CHASE_RSP: |
1955 | /* we want to do EXT status regardless of port | |
1956 | * open/closed */ | |
1957 | dbg("%s - Port %u EXT CHASE_RSP Data = %02x", | |
1958 | __func__, edge_serial->rxPort, byte3); | |
1959 | /* Currently, the only EXT_STATUS is Chase, so process | |
1960 | * here instead of one more call to one more subroutine | |
1961 | * If/when more EXT_STATUS, there'll be more work to do | |
1962 | * Also, we currently clear flag and close the port | |
1963 | * regardless of content of above's Byte3. | |
1964 | * We could choose to do something else when Byte3 says | |
1965 | * Timeout on Chase from Edgeport, like wait longer in | |
1966 | * block_until_chase_response, but for now we don't. | |
1967 | */ | |
1968 | edge_port->chaseResponsePending = false; | |
1969 | wake_up(&edge_port->wait_chase); | |
1970 | return; | |
1da177e4 | 1971 | |
03f0dbf7 | 1972 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
759f3634 | 1973 | dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============", __func__, edge_serial->rxPort, byte3); |
03f0dbf7 AC |
1974 | /* Port->RxCheckRsp = true; */ |
1975 | return; | |
1da177e4 LT |
1976 | } |
1977 | } | |
1978 | ||
1979 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1980 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1981 | edge_port->maxTxCredits = edge_port->txCredits; | |
25985edc | 1982 | dbg("%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits); |
03f0dbf7 | 1983 | handle_new_msr(edge_port, byte2); |
1da177e4 | 1984 | |
03f0dbf7 AC |
1985 | /* send the current line settings to the port so we are |
1986 | in sync with any further termios calls */ | |
4a90f09b AC |
1987 | tty = tty_port_tty_get(&edge_port->port->port); |
1988 | if (tty) { | |
1989 | change_port_settings(tty, | |
adc8d746 | 1990 | edge_port, &tty->termios); |
4a90f09b AC |
1991 | tty_kref_put(tty); |
1992 | } | |
1da177e4 LT |
1993 | |
1994 | /* we have completed the open */ | |
cb8eaa8b RK |
1995 | edge_port->openPending = false; |
1996 | edge_port->open = true; | |
1da177e4 LT |
1997 | wake_up(&edge_port->wait_open); |
1998 | return; | |
1999 | } | |
2000 | ||
03f0dbf7 AC |
2001 | /* If port is closed, silently discard all rcvd status. We can |
2002 | * have cases where buffered status is received AFTER the close | |
2003 | * port command is sent to the Edgeport. | |
2004 | */ | |
2005 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 2006 | return; |
1da177e4 LT |
2007 | |
2008 | switch (code) { | |
03f0dbf7 AC |
2009 | /* Not currently sent by Edgeport */ |
2010 | case IOSP_STATUS_LSR: | |
2011 | dbg("%s - Port %u LSR Status = %02x", | |
2012 | __func__, edge_serial->rxPort, byte2); | |
2013 | handle_new_lsr(edge_port, false, byte2, 0); | |
2014 | break; | |
1da177e4 | 2015 | |
03f0dbf7 AC |
2016 | case IOSP_STATUS_LSR_DATA: |
2017 | dbg("%s - Port %u LSR Status = %02x, Data = %02x", | |
2018 | __func__, edge_serial->rxPort, byte2, byte3); | |
2019 | /* byte2 is LSR Register */ | |
2020 | /* byte3 is broken data byte */ | |
2021 | handle_new_lsr(edge_port, true, byte2, byte3); | |
2022 | break; | |
2023 | /* | |
2024 | * case IOSP_EXT_4_STATUS: | |
2025 | * dbg("%s - Port %u LSR Status = %02x Data = %02x", | |
2026 | * __func__, edge_serial->rxPort, byte2, byte3); | |
2027 | * break; | |
2028 | */ | |
2029 | case IOSP_STATUS_MSR: | |
2030 | dbg("%s - Port %u MSR Status = %02x", | |
2031 | __func__, edge_serial->rxPort, byte2); | |
2032 | /* | |
2033 | * Process this new modem status and generate appropriate | |
2034 | * events, etc, based on the new status. This routine | |
2035 | * also saves the MSR in Port->ShadowMsr. | |
2036 | */ | |
2037 | handle_new_msr(edge_port, byte2); | |
2038 | break; | |
1da177e4 | 2039 | |
03f0dbf7 | 2040 | default: |
759f3634 | 2041 | dbg("%s - Unrecognized IOSP status code %u", __func__, code); |
03f0dbf7 | 2042 | break; |
1da177e4 | 2043 | } |
1da177e4 LT |
2044 | } |
2045 | ||
2046 | ||
2047 | /***************************************************************************** | |
2048 | * edge_tty_recv | |
2049 | * this function passes data on to the tty flip buffer | |
2050 | *****************************************************************************/ | |
03f0dbf7 AC |
2051 | static void edge_tty_recv(struct device *dev, struct tty_struct *tty, |
2052 | unsigned char *data, int length) | |
1da177e4 LT |
2053 | { |
2054 | int cnt; | |
2055 | ||
a108bfcb AC |
2056 | cnt = tty_insert_flip_string(tty, data, length); |
2057 | if (cnt < length) { | |
2058 | dev_err(dev, "%s - dropping data, %d bytes lost\n", | |
2059 | __func__, length - cnt); | |
2060 | } | |
2061 | data += cnt; | |
2062 | length -= cnt; | |
1da177e4 LT |
2063 | |
2064 | tty_flip_buffer_push(tty); | |
2065 | } | |
2066 | ||
2067 | ||
2068 | /***************************************************************************** | |
2069 | * handle_new_msr | |
2070 | * this function handles any change to the msr register for a port. | |
2071 | *****************************************************************************/ | |
2072 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
2073 | { | |
2074 | struct async_icount *icount; | |
2075 | ||
441b62c1 | 2076 | dbg("%s %02x", __func__, newMsr); |
1da177e4 | 2077 | |
03f0dbf7 AC |
2078 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
2079 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
1da177e4 LT |
2080 | icount = &edge_port->icount; |
2081 | ||
2082 | /* update input line counters */ | |
03f0dbf7 | 2083 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 2084 | icount->cts++; |
03f0dbf7 | 2085 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 2086 | icount->dsr++; |
03f0dbf7 | 2087 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 2088 | icount->dcd++; |
03f0dbf7 | 2089 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 2090 | icount->rng++; |
1da177e4 LT |
2091 | wake_up_interruptible(&edge_port->delta_msr_wait); |
2092 | } | |
2093 | ||
2094 | /* Save the new modem status */ | |
2095 | edge_port->shadowMSR = newMsr & 0xf0; | |
1da177e4 LT |
2096 | } |
2097 | ||
2098 | ||
2099 | /***************************************************************************** | |
2100 | * handle_new_lsr | |
2101 | * this function handles any change to the lsr register for a port. | |
2102 | *****************************************************************************/ | |
03f0dbf7 AC |
2103 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
2104 | __u8 lsr, __u8 data) | |
1da177e4 | 2105 | { |
03f0dbf7 AC |
2106 | __u8 newLsr = (__u8) (lsr & (__u8) |
2107 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
2108 | struct async_icount *icount; | |
1da177e4 | 2109 | |
441b62c1 | 2110 | dbg("%s - %02x", __func__, newLsr); |
1da177e4 LT |
2111 | |
2112 | edge_port->shadowLSR = lsr; | |
2113 | ||
2114 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
2115 | /* |
2116 | * Parity and Framing errors only count if they | |
2117 | * occur exclusive of a break being | |
2118 | * received. | |
2119 | */ | |
1da177e4 LT |
2120 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
2121 | } | |
2122 | ||
2123 | /* Place LSR data byte into Rx buffer */ | |
4a90f09b AC |
2124 | if (lsrData) { |
2125 | struct tty_struct *tty = | |
2126 | tty_port_tty_get(&edge_port->port->port); | |
2127 | if (tty) { | |
2128 | edge_tty_recv(&edge_port->port->dev, tty, &data, 1); | |
2129 | tty_kref_put(tty); | |
2130 | } | |
2131 | } | |
1da177e4 LT |
2132 | /* update input line counters */ |
2133 | icount = &edge_port->icount; | |
03f0dbf7 | 2134 | if (newLsr & LSR_BREAK) |
1da177e4 | 2135 | icount->brk++; |
03f0dbf7 | 2136 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 2137 | icount->overrun++; |
03f0dbf7 | 2138 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 2139 | icount->parity++; |
03f0dbf7 | 2140 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 2141 | icount->frame++; |
1da177e4 LT |
2142 | } |
2143 | ||
2144 | ||
2145 | /**************************************************************************** | |
2146 | * sram_write | |
03f0dbf7 | 2147 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2148 | * given address. |
2149 | * If successful returns the number of bytes written, otherwise it returns | |
2150 | * a negative error number of the problem. | |
2151 | ****************************************************************************/ | |
03f0dbf7 AC |
2152 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2153 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2154 | { |
2155 | int result; | |
2156 | __u16 current_length; | |
2157 | unsigned char *transfer_buffer; | |
2158 | ||
441b62c1 | 2159 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 | 2160 | |
03f0dbf7 | 2161 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2162 | if (!transfer_buffer) { |
03f0dbf7 AC |
2163 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2164 | __func__, 64); | |
1da177e4 LT |
2165 | return -ENOMEM; |
2166 | } | |
2167 | ||
2168 | /* need to split these writes up into 64 byte chunks */ | |
2169 | result = 0; | |
2170 | while (length > 0) { | |
03f0dbf7 | 2171 | if (length > 64) |
1da177e4 | 2172 | current_length = 64; |
03f0dbf7 | 2173 | else |
1da177e4 | 2174 | current_length = length; |
03f0dbf7 AC |
2175 | |
2176 | /* dbg("%s - writing %x, %x, %d", __func__, | |
2177 | extAddr, addr, current_length); */ | |
2178 | memcpy(transfer_buffer, data, current_length); | |
2179 | result = usb_control_msg(serial->dev, | |
2180 | usb_sndctrlpipe(serial->dev, 0), | |
2181 | USB_REQUEST_ION_WRITE_RAM, | |
2182 | 0x40, addr, extAddr, transfer_buffer, | |
2183 | current_length, 300); | |
1da177e4 LT |
2184 | if (result < 0) |
2185 | break; | |
2186 | length -= current_length; | |
2187 | addr += current_length; | |
2188 | data += current_length; | |
03f0dbf7 | 2189 | } |
1da177e4 | 2190 | |
03f0dbf7 | 2191 | kfree(transfer_buffer); |
1da177e4 LT |
2192 | return result; |
2193 | } | |
2194 | ||
2195 | ||
2196 | /**************************************************************************** | |
2197 | * rom_write | |
2198 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2199 | * given address. | |
2200 | * If successful returns the number of bytes written, otherwise it returns | |
2201 | * a negative error number of the problem. | |
2202 | ****************************************************************************/ | |
03f0dbf7 AC |
2203 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2204 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2205 | { |
2206 | int result; | |
2207 | __u16 current_length; | |
2208 | unsigned char *transfer_buffer; | |
2209 | ||
03f0dbf7 | 2210 | /* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */ |
1da177e4 | 2211 | |
03f0dbf7 | 2212 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2213 | if (!transfer_buffer) { |
03f0dbf7 AC |
2214 | dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", |
2215 | __func__, 64); | |
1da177e4 LT |
2216 | return -ENOMEM; |
2217 | } | |
2218 | ||
2219 | /* need to split these writes up into 64 byte chunks */ | |
2220 | result = 0; | |
2221 | while (length > 0) { | |
03f0dbf7 | 2222 | if (length > 64) |
1da177e4 | 2223 | current_length = 64; |
03f0dbf7 | 2224 | else |
1da177e4 | 2225 | current_length = length; |
03f0dbf7 AC |
2226 | /* dbg("%s - writing %x, %x, %d", __func__, |
2227 | extAddr, addr, current_length); */ | |
2228 | memcpy(transfer_buffer, data, current_length); | |
2229 | result = usb_control_msg(serial->dev, | |
2230 | usb_sndctrlpipe(serial->dev, 0), | |
2231 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2232 | addr, extAddr, | |
2233 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2234 | if (result < 0) |
2235 | break; | |
2236 | length -= current_length; | |
2237 | addr += current_length; | |
2238 | data += current_length; | |
03f0dbf7 | 2239 | } |
1da177e4 | 2240 | |
03f0dbf7 | 2241 | kfree(transfer_buffer); |
1da177e4 LT |
2242 | return result; |
2243 | } | |
2244 | ||
2245 | ||
2246 | /**************************************************************************** | |
2247 | * rom_read | |
2248 | * reads a number of bytes from the Edgeport device starting at the given | |
2249 | * address. | |
2250 | * If successful returns the number of bytes read, otherwise it returns | |
2251 | * a negative error number of the problem. | |
2252 | ****************************************************************************/ | |
03f0dbf7 AC |
2253 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2254 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2255 | { |
2256 | int result; | |
2257 | __u16 current_length; | |
2258 | unsigned char *transfer_buffer; | |
2259 | ||
441b62c1 | 2260 | dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); |
1da177e4 | 2261 | |
03f0dbf7 | 2262 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
1da177e4 | 2263 | if (!transfer_buffer) { |
03f0dbf7 AC |
2264 | dev_err(&serial->dev->dev, |
2265 | "%s - kmalloc(%d) failed.\n", __func__, 64); | |
1da177e4 LT |
2266 | return -ENOMEM; |
2267 | } | |
2268 | ||
2269 | /* need to split these reads up into 64 byte chunks */ | |
2270 | result = 0; | |
2271 | while (length > 0) { | |
03f0dbf7 | 2272 | if (length > 64) |
1da177e4 | 2273 | current_length = 64; |
03f0dbf7 | 2274 | else |
1da177e4 | 2275 | current_length = length; |
03f0dbf7 AC |
2276 | /* dbg("%s - %x, %x, %d", __func__, |
2277 | extAddr, addr, current_length); */ | |
2278 | result = usb_control_msg(serial->dev, | |
2279 | usb_rcvctrlpipe(serial->dev, 0), | |
2280 | USB_REQUEST_ION_READ_ROM, | |
2281 | 0xC0, addr, extAddr, transfer_buffer, | |
2282 | current_length, 300); | |
1da177e4 LT |
2283 | if (result < 0) |
2284 | break; | |
03f0dbf7 | 2285 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2286 | length -= current_length; |
2287 | addr += current_length; | |
2288 | data += current_length; | |
03f0dbf7 | 2289 | } |
1da177e4 | 2290 | |
03f0dbf7 | 2291 | kfree(transfer_buffer); |
1da177e4 LT |
2292 | return result; |
2293 | } | |
2294 | ||
2295 | ||
2296 | /**************************************************************************** | |
2297 | * send_iosp_ext_cmd | |
2298 | * Is used to send a IOSP message to the Edgeport device | |
2299 | ****************************************************************************/ | |
03f0dbf7 AC |
2300 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2301 | __u8 command, __u8 param) | |
1da177e4 LT |
2302 | { |
2303 | unsigned char *buffer; | |
2304 | unsigned char *currentCommand; | |
2305 | int length = 0; | |
2306 | int status = 0; | |
2307 | ||
441b62c1 | 2308 | dbg("%s - %d, %d", __func__, command, param); |
1da177e4 | 2309 | |
03f0dbf7 | 2310 | buffer = kmalloc(10, GFP_ATOMIC); |
1da177e4 | 2311 | if (!buffer) { |
03f0dbf7 AC |
2312 | dev_err(&edge_port->port->dev, |
2313 | "%s - kmalloc(%d) failed.\n", __func__, 10); | |
1da177e4 LT |
2314 | return -ENOMEM; |
2315 | } | |
2316 | ||
2317 | currentCommand = buffer; | |
2318 | ||
03f0dbf7 AC |
2319 | MAKE_CMD_EXT_CMD(¤tCommand, &length, |
2320 | edge_port->port->number - edge_port->port->serial->minor, | |
2321 | command, param); | |
1da177e4 | 2322 | |
03f0dbf7 | 2323 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2324 | if (status) { |
2325 | /* something bad happened, let's free up the memory */ | |
2326 | kfree(buffer); | |
2327 | } | |
2328 | ||
2329 | return status; | |
2330 | } | |
2331 | ||
2332 | ||
2333 | /***************************************************************************** | |
2334 | * write_cmd_usb | |
2335 | * this function writes the given buffer out to the bulk write endpoint. | |
2336 | *****************************************************************************/ | |
03f0dbf7 AC |
2337 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2338 | unsigned char *buffer, int length) | |
1da177e4 | 2339 | { |
03f0dbf7 AC |
2340 | struct edgeport_serial *edge_serial = |
2341 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2342 | int status = 0; |
2343 | struct urb *urb; | |
1da177e4 | 2344 | |
03f0dbf7 AC |
2345 | usb_serial_debug_data(debug, &edge_port->port->dev, |
2346 | __func__, length, buffer); | |
1da177e4 LT |
2347 | |
2348 | /* Allocate our next urb */ | |
03f0dbf7 | 2349 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2350 | if (!urb) |
2351 | return -ENOMEM; | |
2352 | ||
96c706ed | 2353 | atomic_inc(&CmdUrbs); |
03f0dbf7 AC |
2354 | dbg("%s - ALLOCATE URB %p (outstanding %d)", |
2355 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2356 | |
03f0dbf7 AC |
2357 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2358 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2359 | edge_serial->bulk_out_endpoint), | |
2360 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2361 | |
cb8eaa8b | 2362 | edge_port->commandPending = true; |
1da177e4 LT |
2363 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2364 | ||
2365 | if (status) { | |
2366 | /* something went wrong */ | |
03f0dbf7 AC |
2367 | dev_err(&edge_port->port->dev, |
2368 | "%s - usb_submit_urb(write command) failed, status = %d\n", | |
2369 | __func__, status); | |
1da177e4 LT |
2370 | usb_kill_urb(urb); |
2371 | usb_free_urb(urb); | |
96c706ed | 2372 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2373 | return status; |
2374 | } | |
2375 | ||
1da177e4 | 2376 | #if 0 |
03f0dbf7 | 2377 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2378 | |
cb8eaa8b | 2379 | if (edge_port->commandPending) { |
1da177e4 | 2380 | /* command timed out */ |
441b62c1 | 2381 | dbg("%s - command timed out", __func__); |
1da177e4 LT |
2382 | status = -EINVAL; |
2383 | } | |
2384 | #endif | |
2385 | return status; | |
2386 | } | |
2387 | ||
2388 | ||
2389 | /***************************************************************************** | |
2390 | * send_cmd_write_baud_rate | |
2391 | * this function sends the proper command to change the baud rate of the | |
2392 | * specified port. | |
2393 | *****************************************************************************/ | |
03f0dbf7 AC |
2394 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2395 | int baudRate) | |
1da177e4 | 2396 | { |
03f0dbf7 AC |
2397 | struct edgeport_serial *edge_serial = |
2398 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2399 | unsigned char *cmdBuffer; |
2400 | unsigned char *currCmd; | |
2401 | int cmdLen = 0; | |
2402 | int divisor; | |
2403 | int status; | |
03f0dbf7 AC |
2404 | unsigned char number = |
2405 | edge_port->port->number - edge_port->port->serial->minor; | |
1da177e4 | 2406 | |
bc71e479 AK |
2407 | if (edge_serial->is_epic && |
2408 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
6e8cf775 GKH |
2409 | dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d", |
2410 | edge_port->port->number, baudRate); | |
2411 | return 0; | |
2412 | } | |
2413 | ||
03f0dbf7 AC |
2414 | dbg("%s - port = %d, baud = %d", __func__, |
2415 | edge_port->port->number, baudRate); | |
1da177e4 | 2416 | |
03f0dbf7 | 2417 | status = calc_baud_rate_divisor(baudRate, &divisor); |
1da177e4 | 2418 | if (status) { |
03f0dbf7 AC |
2419 | dev_err(&edge_port->port->dev, "%s - bad baud rate\n", |
2420 | __func__); | |
1da177e4 LT |
2421 | return status; |
2422 | } | |
2423 | ||
03f0dbf7 AC |
2424 | /* Alloc memory for the string of commands. */ |
2425 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
1da177e4 | 2426 | if (!cmdBuffer) { |
03f0dbf7 AC |
2427 | dev_err(&edge_port->port->dev, |
2428 | "%s - kmalloc(%d) failed.\n", __func__, 0x100); | |
1da177e4 LT |
2429 | return -ENOMEM; |
2430 | } | |
2431 | currCmd = cmdBuffer; | |
2432 | ||
03f0dbf7 AC |
2433 | /* Enable access to divisor latch */ |
2434 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2435 | |
03f0dbf7 AC |
2436 | /* Write the divisor itself */ |
2437 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2438 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2439 | |
03f0dbf7 AC |
2440 | /* Restore original value to disable access to divisor latch */ |
2441 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2442 | edge_port->shadowLCR); | |
1da177e4 | 2443 | |
03f0dbf7 | 2444 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2445 | if (status) { |
2446 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2447 | kfree(cmdBuffer); |
1da177e4 LT |
2448 | } |
2449 | ||
2450 | return status; | |
2451 | } | |
2452 | ||
2453 | ||
2454 | /***************************************************************************** | |
2455 | * calc_baud_rate_divisor | |
2456 | * this function calculates the proper baud rate divisor for the specified | |
2457 | * baud rate. | |
2458 | *****************************************************************************/ | |
03f0dbf7 | 2459 | static int calc_baud_rate_divisor(int baudrate, int *divisor) |
1da177e4 LT |
2460 | { |
2461 | int i; | |
2462 | __u16 custom; | |
2463 | ||
2464 | ||
441b62c1 | 2465 | dbg("%s - %d", __func__, baudrate); |
1da177e4 | 2466 | |
52950ed4 | 2467 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2468 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2469 | *divisor = divisor_table[i].Divisor; |
2470 | return 0; | |
2471 | } | |
2472 | } | |
2473 | ||
03f0dbf7 AC |
2474 | /* We have tried all of the standard baud rates |
2475 | * lets try to calculate the divisor for this baud rate | |
2476 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2477 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2478 | /* get divisor */ |
1da177e4 LT |
2479 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2480 | ||
2481 | *divisor = custom; | |
2482 | ||
759f3634 | 2483 | dbg("%s - Baud %d = %d", __func__, baudrate, custom); |
1da177e4 LT |
2484 | return 0; |
2485 | } | |
2486 | ||
2487 | return -1; | |
2488 | } | |
2489 | ||
2490 | ||
2491 | /***************************************************************************** | |
2492 | * send_cmd_write_uart_register | |
fd589a8f | 2493 | * this function builds up a uart register message and sends to the device. |
1da177e4 | 2494 | *****************************************************************************/ |
03f0dbf7 AC |
2495 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2496 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2497 | { |
03f0dbf7 AC |
2498 | struct edgeport_serial *edge_serial = |
2499 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2500 | unsigned char *cmdBuffer; |
2501 | unsigned char *currCmd; | |
2502 | unsigned long cmdLen = 0; | |
2503 | int status; | |
2504 | ||
03f0dbf7 AC |
2505 | dbg("%s - write to %s register 0x%02x", |
2506 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2507 | |
bc71e479 AK |
2508 | if (edge_serial->is_epic && |
2509 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2510 | regNum == MCR) { | |
beb7dd86 | 2511 | dbg("SendCmdWriteUartReg - Not writing to MCR Register"); |
6e8cf775 GKH |
2512 | return 0; |
2513 | } | |
2514 | ||
bc71e479 AK |
2515 | if (edge_serial->is_epic && |
2516 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2517 | regNum == LCR) { | |
03f0dbf7 | 2518 | dbg("SendCmdWriteUartReg - Not writing to LCR Register"); |
6e8cf775 GKH |
2519 | return 0; |
2520 | } | |
2521 | ||
03f0dbf7 AC |
2522 | /* Alloc memory for the string of commands. */ |
2523 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2524 | if (cmdBuffer == NULL) | |
1da177e4 | 2525 | return -ENOMEM; |
1da177e4 LT |
2526 | |
2527 | currCmd = cmdBuffer; | |
2528 | ||
03f0dbf7 AC |
2529 | /* Build a cmd in the buffer to write the given register */ |
2530 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, | |
2531 | edge_port->port->number - edge_port->port->serial->minor, | |
2532 | regNum, regValue); | |
1da177e4 LT |
2533 | |
2534 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2535 | if (status) { | |
2536 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2537 | kfree(cmdBuffer); |
1da177e4 LT |
2538 | } |
2539 | ||
2540 | return status; | |
2541 | } | |
2542 | ||
2543 | ||
2544 | /***************************************************************************** | |
2545 | * change_port_settings | |
03f0dbf7 AC |
2546 | * This routine is called to set the UART on the device to match the |
2547 | * specified new settings. | |
1da177e4 | 2548 | *****************************************************************************/ |
95da310e AC |
2549 | |
2550 | static void change_port_settings(struct tty_struct *tty, | |
2551 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2552 | { |
03f0dbf7 AC |
2553 | struct edgeport_serial *edge_serial = |
2554 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2555 | int baud; |
2556 | unsigned cflag; | |
2557 | __u8 mask = 0xff; | |
2558 | __u8 lData; | |
2559 | __u8 lParity; | |
2560 | __u8 lStop; | |
2561 | __u8 rxFlow; | |
2562 | __u8 txFlow; | |
2563 | int status; | |
2564 | ||
441b62c1 | 2565 | dbg("%s - port %d", __func__, edge_port->port->number); |
1da177e4 | 2566 | |
cb8eaa8b RK |
2567 | if (!edge_port->open && |
2568 | !edge_port->openPending) { | |
441b62c1 | 2569 | dbg("%s - port not opened", __func__); |
1da177e4 LT |
2570 | return; |
2571 | } | |
2572 | ||
adc8d746 | 2573 | cflag = tty->termios.c_cflag; |
1da177e4 LT |
2574 | |
2575 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2576 | case CS5: |
2577 | lData = LCR_BITS_5; mask = 0x1f; | |
2578 | dbg("%s - data bits = 5", __func__); | |
2579 | break; | |
2580 | case CS6: | |
2581 | lData = LCR_BITS_6; mask = 0x3f; | |
2582 | dbg("%s - data bits = 6", __func__); | |
2583 | break; | |
2584 | case CS7: | |
2585 | lData = LCR_BITS_7; mask = 0x7f; | |
2586 | dbg("%s - data bits = 7", __func__); | |
2587 | break; | |
2588 | default: | |
2589 | case CS8: | |
2590 | lData = LCR_BITS_8; | |
2591 | dbg("%s - data bits = 8", __func__); | |
2592 | break; | |
1da177e4 LT |
2593 | } |
2594 | ||
2595 | lParity = LCR_PAR_NONE; | |
2596 | if (cflag & PARENB) { | |
2597 | if (cflag & CMSPAR) { | |
2598 | if (cflag & PARODD) { | |
2599 | lParity = LCR_PAR_MARK; | |
441b62c1 | 2600 | dbg("%s - parity = mark", __func__); |
1da177e4 LT |
2601 | } else { |
2602 | lParity = LCR_PAR_SPACE; | |
441b62c1 | 2603 | dbg("%s - parity = space", __func__); |
1da177e4 LT |
2604 | } |
2605 | } else if (cflag & PARODD) { | |
2606 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2607 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
2608 | } else { |
2609 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2610 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
2611 | } |
2612 | } else { | |
441b62c1 | 2613 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
2614 | } |
2615 | ||
2616 | if (cflag & CSTOPB) { | |
2617 | lStop = LCR_STOP_2; | |
441b62c1 | 2618 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
2619 | } else { |
2620 | lStop = LCR_STOP_1; | |
441b62c1 | 2621 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
2622 | } |
2623 | ||
2624 | /* figure out the flow control settings */ | |
2625 | rxFlow = txFlow = 0x00; | |
2626 | if (cflag & CRTSCTS) { | |
2627 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2628 | txFlow |= IOSP_TX_FLOW_CTS; | |
441b62c1 | 2629 | dbg("%s - RTS/CTS is enabled", __func__); |
1da177e4 | 2630 | } else { |
441b62c1 | 2631 | dbg("%s - RTS/CTS is disabled", __func__); |
1da177e4 LT |
2632 | } |
2633 | ||
03f0dbf7 AC |
2634 | /* if we are implementing XON/XOFF, set the start and stop character |
2635 | in the device */ | |
1da177e4 LT |
2636 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2637 | unsigned char stop_char = STOP_CHAR(tty); | |
2638 | unsigned char start_char = START_CHAR(tty); | |
2639 | ||
6e8cf775 GKH |
2640 | if ((!edge_serial->is_epic) || |
2641 | ((edge_serial->is_epic) && | |
2642 | (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) { | |
03f0dbf7 AC |
2643 | send_iosp_ext_cmd(edge_port, |
2644 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2645 | send_iosp_ext_cmd(edge_port, | |
2646 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2647 | } |
1da177e4 LT |
2648 | |
2649 | /* if we are implementing INBOUND XON/XOFF */ | |
2650 | if (I_IXOFF(tty)) { | |
2651 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
03f0dbf7 AC |
2652 | dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", |
2653 | __func__, start_char, stop_char); | |
1da177e4 | 2654 | } else { |
441b62c1 | 2655 | dbg("%s - INBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2656 | } |
2657 | ||
2658 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2659 | if (I_IXON(tty)) { | |
2660 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
03f0dbf7 AC |
2661 | dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", |
2662 | __func__, start_char, stop_char); | |
1da177e4 | 2663 | } else { |
441b62c1 | 2664 | dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); |
1da177e4 LT |
2665 | } |
2666 | } | |
2667 | ||
2668 | /* Set flow control to the configured value */ | |
6e8cf775 GKH |
2669 | if ((!edge_serial->is_epic) || |
2670 | ((edge_serial->is_epic) && | |
2671 | (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow))) | |
2672 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); | |
2673 | if ((!edge_serial->is_epic) || | |
2674 | ((edge_serial->is_epic) && | |
2675 | (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow))) | |
2676 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); | |
1da177e4 LT |
2677 | |
2678 | ||
2679 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2680 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2681 | ||
2682 | edge_port->validDataMask = mask; | |
2683 | ||
2684 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2685 | status = send_cmd_write_uart_register(edge_port, LCR, |
2686 | edge_port->shadowLCR); | |
2687 | if (status != 0) | |
1da177e4 | 2688 | return; |
1da177e4 LT |
2689 | |
2690 | /* set up the MCR register and send it to the EdgePort */ | |
2691 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2692 | if (cflag & CBAUD) |
1da177e4 | 2693 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2694 | |
2695 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2696 | edge_port->shadowMCR); | |
2697 | if (status != 0) | |
1da177e4 | 2698 | return; |
1da177e4 LT |
2699 | |
2700 | /* Determine divisor based on baud rate */ | |
2701 | baud = tty_get_baud_rate(tty); | |
2702 | if (!baud) { | |
2703 | /* pick a default, any default... */ | |
2704 | baud = 9600; | |
2705 | } | |
2706 | ||
441b62c1 | 2707 | dbg("%s - baud rate = %d", __func__, baud); |
03f0dbf7 | 2708 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2709 | if (status == -1) { |
2710 | /* Speed change was not possible - put back the old speed */ | |
2711 | baud = tty_termios_baud_rate(old_termios); | |
2712 | tty_encode_baud_rate(tty, baud, baud); | |
2713 | } | |
1da177e4 LT |
2714 | } |
2715 | ||
2716 | ||
2717 | /**************************************************************************** | |
2718 | * unicode_to_ascii | |
2719 | * Turns a string from Unicode into ASCII. | |
2720 | * Doesn't do a good job with any characters that are outside the normal | |
2721 | * ASCII range, but it's only for debugging... | |
2722 | * NOTE: expects the unicode in LE format | |
2723 | ****************************************************************************/ | |
03f0dbf7 AC |
2724 | static void unicode_to_ascii(char *string, int buflen, |
2725 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2726 | { |
2727 | int i; | |
2728 | ||
ad93375a | 2729 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2730 | return; |
ad93375a | 2731 | --buflen; /* space for nul */ |
1da177e4 | 2732 | |
ad93375a PZ |
2733 | for (i = 0; i < unicode_size; i++) { |
2734 | if (i >= buflen) | |
2735 | break; | |
1da177e4 | 2736 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2737 | } |
2738 | string[i] = 0x00; | |
1da177e4 LT |
2739 | } |
2740 | ||
2741 | ||
2742 | /**************************************************************************** | |
2743 | * get_manufacturing_desc | |
03f0dbf7 | 2744 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2745 | * structure. |
2746 | ****************************************************************************/ | |
03f0dbf7 | 2747 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 LT |
2748 | { |
2749 | int response; | |
2750 | ||
2751 | dbg("getting manufacturer descriptor"); | |
2752 | ||
03f0dbf7 AC |
2753 | response = rom_read(edge_serial->serial, |
2754 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2755 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2756 | EDGE_MANUF_DESC_LEN, | |
2757 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2758 | |
03f0dbf7 AC |
2759 | if (response < 1) |
2760 | dev_err(&edge_serial->serial->dev->dev, | |
2761 | "error in getting manufacturer descriptor\n"); | |
2762 | else { | |
1da177e4 LT |
2763 | char string[30]; |
2764 | dbg("**Manufacturer Descriptor"); | |
03f0dbf7 AC |
2765 | dbg(" RomSize: %dK", |
2766 | edge_serial->manuf_descriptor.RomSize); | |
2767 | dbg(" RamSize: %dK", | |
2768 | edge_serial->manuf_descriptor.RamSize); | |
2769 | dbg(" CpuRev: %d", | |
2770 | edge_serial->manuf_descriptor.CpuRev); | |
2771 | dbg(" BoardRev: %d", | |
2772 | edge_serial->manuf_descriptor.BoardRev); | |
2773 | dbg(" NumPorts: %d", | |
2774 | edge_serial->manuf_descriptor.NumPorts); | |
2775 | dbg(" DescDate: %d/%d/%d", | |
2776 | edge_serial->manuf_descriptor.DescDate[0], | |
2777 | edge_serial->manuf_descriptor.DescDate[1], | |
2778 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2779 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2780 | edge_serial->manuf_descriptor.SerialNumber, |
2781 | edge_serial->manuf_descriptor.SerNumLength/2); | |
1da177e4 | 2782 | dbg(" SerialNumber: %s", string); |
4bc203d9 | 2783 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2784 | edge_serial->manuf_descriptor.AssemblyNumber, |
2785 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
1da177e4 | 2786 | dbg(" AssemblyNumber: %s", string); |
4bc203d9 | 2787 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2788 | edge_serial->manuf_descriptor.OemAssyNumber, |
2789 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
1da177e4 | 2790 | dbg(" OemAssyNumber: %s", string); |
03f0dbf7 AC |
2791 | dbg(" UartType: %d", |
2792 | edge_serial->manuf_descriptor.UartType); | |
2793 | dbg(" IonPid: %d", | |
2794 | edge_serial->manuf_descriptor.IonPid); | |
2795 | dbg(" IonConfig: %d", | |
2796 | edge_serial->manuf_descriptor.IonConfig); | |
1da177e4 LT |
2797 | } |
2798 | } | |
2799 | ||
2800 | ||
2801 | /**************************************************************************** | |
2802 | * get_boot_desc | |
03f0dbf7 | 2803 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2804 | * structure. |
2805 | ****************************************************************************/ | |
03f0dbf7 | 2806 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 LT |
2807 | { |
2808 | int response; | |
2809 | ||
2810 | dbg("getting boot descriptor"); | |
2811 | ||
03f0dbf7 AC |
2812 | response = rom_read(edge_serial->serial, |
2813 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2814 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2815 | EDGE_BOOT_DESC_LEN, | |
2816 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2817 | |
03f0dbf7 AC |
2818 | if (response < 1) |
2819 | dev_err(&edge_serial->serial->dev->dev, | |
2820 | "error in getting boot descriptor\n"); | |
2821 | else { | |
1da177e4 | 2822 | dbg("**Boot Descriptor:"); |
03f0dbf7 AC |
2823 | dbg(" BootCodeLength: %d", |
2824 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2825 | dbg(" MajorVersion: %d", | |
2826 | edge_serial->boot_descriptor.MajorVersion); | |
2827 | dbg(" MinorVersion: %d", | |
2828 | edge_serial->boot_descriptor.MinorVersion); | |
2829 | dbg(" BuildNumber: %d", | |
2830 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
2831 | dbg(" Capabilities: 0x%x", | |
2832 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); | |
2833 | dbg(" UConfig0: %d", | |
2834 | edge_serial->boot_descriptor.UConfig0); | |
2835 | dbg(" UConfig1: %d", | |
2836 | edge_serial->boot_descriptor.UConfig1); | |
1da177e4 LT |
2837 | } |
2838 | } | |
2839 | ||
2840 | ||
2841 | /**************************************************************************** | |
2842 | * load_application_firmware | |
2843 | * This is called to load the application firmware to the device | |
2844 | ****************************************************************************/ | |
03f0dbf7 | 2845 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2846 | { |
5b9ea932 JS |
2847 | const struct ihex_binrec *rec; |
2848 | const struct firmware *fw; | |
2849 | const char *fw_name; | |
2850 | const char *fw_info; | |
1da177e4 | 2851 | int response; |
5b9ea932 JS |
2852 | __u32 Operaddr; |
2853 | __u16 build; | |
1da177e4 LT |
2854 | |
2855 | switch (edge_serial->product_info.iDownloadFile) { | |
2856 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2857 | fw_info = "downloading firmware version (930)"; |
2858 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2859 | break; |
2860 | ||
2861 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2862 | fw_info = "downloading firmware version (80251)"; |
2863 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2864 | break; |
2865 | ||
2866 | case EDGE_DOWNLOAD_FILE_NONE: | |
759f3634 | 2867 | dbg("No download file specified, skipping download"); |
1da177e4 LT |
2868 | return; |
2869 | ||
2870 | default: | |
2871 | return; | |
2872 | } | |
2873 | ||
5b9ea932 JS |
2874 | response = request_ihex_firmware(&fw, fw_name, |
2875 | &edge_serial->serial->dev->dev); | |
2876 | if (response) { | |
2877 | printk(KERN_ERR "Failed to load image \"%s\" err %d\n", | |
2878 | fw_name, response); | |
2879 | return; | |
2880 | } | |
2881 | ||
2882 | rec = (const struct ihex_binrec *)fw->data; | |
2883 | build = (rec->data[2] << 8) | rec->data[3]; | |
2884 | ||
2885 | dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build); | |
2886 | ||
271c1150 BM |
2887 | edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
2888 | edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; | |
5b9ea932 | 2889 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
1da177e4 | 2890 | |
5b9ea932 JS |
2891 | for (rec = ihex_next_binrec(rec); rec; |
2892 | rec = ihex_next_binrec(rec)) { | |
2893 | Operaddr = be32_to_cpu(rec->addr); | |
2894 | response = sram_write(edge_serial->serial, | |
2895 | Operaddr >> 16, | |
2896 | Operaddr & 0xFFFF, | |
2897 | be16_to_cpu(rec->len), | |
2898 | &rec->data[0]); | |
1da177e4 | 2899 | if (response < 0) { |
5b9ea932 JS |
2900 | dev_err(&edge_serial->serial->dev->dev, |
2901 | "sram_write failed (%x, %x, %d)\n", | |
2902 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2903 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2904 | break; |
2905 | } | |
2906 | } | |
2907 | ||
2908 | dbg("sending exec_dl_code"); | |
2909 | response = usb_control_msg (edge_serial->serial->dev, | |
2910 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2911 | USB_REQUEST_ION_EXEC_DL_CODE, | |
2912 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); | |
2913 | ||
5b9ea932 | 2914 | release_firmware(fw); |
1da177e4 LT |
2915 | } |
2916 | ||
2917 | ||
2918 | /**************************************************************************** | |
2919 | * edge_startup | |
2920 | ****************************************************************************/ | |
03f0dbf7 | 2921 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2922 | { |
2923 | struct edgeport_serial *edge_serial; | |
2924 | struct edgeport_port *edge_port; | |
2925 | struct usb_device *dev; | |
bfd5df3c | 2926 | int i, j; |
6e8cf775 | 2927 | int response; |
cb8eaa8b RK |
2928 | bool interrupt_in_found; |
2929 | bool bulk_in_found; | |
2930 | bool bulk_out_found; | |
6e8cf775 GKH |
2931 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2932 | EDGE_COMPATIBILITY_MASK1, | |
2933 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2934 | |
2935 | dev = serial->dev; | |
2936 | ||
2937 | /* create our private serial structure */ | |
80b6ca48 | 2938 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
1da177e4 | 2939 | if (edge_serial == NULL) { |
441b62c1 | 2940 | dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); |
1da177e4 LT |
2941 | return -ENOMEM; |
2942 | } | |
1da177e4 LT |
2943 | spin_lock_init(&edge_serial->es_lock); |
2944 | edge_serial->serial = serial; | |
2945 | usb_set_serial_data(serial, edge_serial); | |
2946 | ||
2947 | /* get the name for the device from the device */ | |
f10718f5 | 2948 | i = usb_string(dev, dev->descriptor.iManufacturer, |
ad93375a | 2949 | &edge_serial->name[0], MAX_NAME_LEN+1); |
f10718f5 DC |
2950 | if (i < 0) |
2951 | i = 0; | |
ad93375a | 2952 | edge_serial->name[i++] = ' '; |
f10718f5 | 2953 | usb_string(dev, dev->descriptor.iProduct, |
ad93375a | 2954 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
1da177e4 LT |
2955 | |
2956 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2957 | ||
6e8cf775 GKH |
2958 | /* Read the epic descriptor */ |
2959 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2960 | /* memcpy descriptor to Supports structures */ | |
2961 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2962 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2963 | |
6e8cf775 | 2964 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 2965 | get_manufacturing_desc(edge_serial); |
1da177e4 | 2966 | |
6e8cf775 | 2967 | /* get the boot descriptor */ |
03f0dbf7 | 2968 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
2969 | |
2970 | get_product_info(edge_serial); | |
2971 | } | |
1da177e4 LT |
2972 | |
2973 | /* set the number of ports from the manufacturing description */ | |
2974 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2975 | if ((!edge_serial->is_epic) && |
2976 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
2977 | dev_warn(&serial->dev->dev, "Device Reported %d serial ports " | |
2978 | "vs. core thinking we have %d ports, email " | |
898eb71c | 2979 | "greg@kroah.com this information.\n", |
6e8cf775 GKH |
2980 | edge_serial->product_info.NumPorts, |
2981 | serial->num_ports); | |
1da177e4 LT |
2982 | } |
2983 | ||
441b62c1 | 2984 | dbg("%s - time 1 %ld", __func__, jiffies); |
1da177e4 | 2985 | |
6e8cf775 GKH |
2986 | /* If not an EPiC device */ |
2987 | if (!edge_serial->is_epic) { | |
2988 | /* now load the application firmware into this device */ | |
03f0dbf7 | 2989 | load_application_firmware(edge_serial); |
1da177e4 | 2990 | |
441b62c1 | 2991 | dbg("%s - time 2 %ld", __func__, jiffies); |
1da177e4 | 2992 | |
6e8cf775 | 2993 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 2994 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 2995 | |
441b62c1 | 2996 | dbg("%s - time 3 %ld", __func__, jiffies); |
6e8cf775 GKH |
2997 | |
2998 | /* set the configuration to use #1 */ | |
03f0dbf7 AC |
2999 | /* dbg("set_configuration 1"); */ |
3000 | /* usb_set_configuration (dev, 1); */ | |
6e8cf775 | 3001 | } |
5b9ea932 JS |
3002 | dbg(" FirmwareMajorVersion %d.%d.%d", |
3003 | edge_serial->product_info.FirmwareMajorVersion, | |
3004 | edge_serial->product_info.FirmwareMinorVersion, | |
3005 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 3006 | |
03f0dbf7 | 3007 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
3008 | * as the structures aren't created yet. */ |
3009 | ||
3010 | /* set up our port private structures */ | |
3011 | for (i = 0; i < serial->num_ports; ++i) { | |
1ac93a30 | 3012 | edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); |
1da177e4 | 3013 | if (edge_port == NULL) { |
03f0dbf7 AC |
3014 | dev_err(&serial->dev->dev, "%s - Out of memory\n", |
3015 | __func__); | |
bfd5df3c | 3016 | for (j = 0; j < i; ++j) { |
03f0dbf7 AC |
3017 | kfree(usb_get_serial_port_data(serial->port[j])); |
3018 | usb_set_serial_port_data(serial->port[j], | |
3019 | NULL); | |
bfd5df3c | 3020 | } |
1da177e4 LT |
3021 | usb_set_serial_data(serial, NULL); |
3022 | kfree(edge_serial); | |
3023 | return -ENOMEM; | |
3024 | } | |
1da177e4 LT |
3025 | spin_lock_init(&edge_port->ep_lock); |
3026 | edge_port->port = serial->port[i]; | |
3027 | usb_set_serial_port_data(serial->port[i], edge_port); | |
3028 | } | |
6e8cf775 GKH |
3029 | |
3030 | response = 0; | |
3031 | ||
3032 | if (edge_serial->is_epic) { | |
03f0dbf7 AC |
3033 | /* EPIC thing, set up our interrupt polling now and our read |
3034 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 3035 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
03f0dbf7 AC |
3036 | for (i = 0; i < serial->interface->altsetting[0] |
3037 | .desc.bNumEndpoints; ++i) { | |
6e8cf775 GKH |
3038 | struct usb_endpoint_descriptor *endpoint; |
3039 | int buffer_size; | |
3040 | ||
03f0dbf7 AC |
3041 | endpoint = &serial->interface->altsetting[0]. |
3042 | endpoint[i].desc; | |
29cc8897 | 3043 | buffer_size = usb_endpoint_maxp(endpoint); |
cb8eaa8b | 3044 | if (!interrupt_in_found && |
6e8cf775 GKH |
3045 | (usb_endpoint_is_int_in(endpoint))) { |
3046 | /* we found a interrupt in endpoint */ | |
3047 | dbg("found interrupt in"); | |
3048 | ||
3049 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3050 | edge_serial->interrupt_read_urb = |
3051 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3052 | if (!edge_serial->interrupt_read_urb) { |
194343d9 | 3053 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3054 | return -ENOMEM; |
3055 | } | |
03f0dbf7 AC |
3056 | edge_serial->interrupt_in_buffer = |
3057 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3058 | if (!edge_serial->interrupt_in_buffer) { |
194343d9 | 3059 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3060 | usb_free_urb(edge_serial->interrupt_read_urb); |
3061 | return -ENOMEM; | |
3062 | } | |
03f0dbf7 AC |
3063 | edge_serial->interrupt_in_endpoint = |
3064 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3065 | |
3066 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
3067 | usb_fill_int_urb( |
3068 | edge_serial->interrupt_read_urb, | |
3069 | dev, | |
3070 | usb_rcvintpipe(dev, | |
3071 | endpoint->bEndpointAddress), | |
3072 | edge_serial->interrupt_in_buffer, | |
3073 | buffer_size, | |
3074 | edge_interrupt_callback, | |
3075 | edge_serial, | |
3076 | endpoint->bInterval); | |
6e8cf775 | 3077 | |
cb8eaa8b | 3078 | interrupt_in_found = true; |
6e8cf775 GKH |
3079 | } |
3080 | ||
cb8eaa8b | 3081 | if (!bulk_in_found && |
03f0dbf7 | 3082 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 GKH |
3083 | /* we found a bulk in endpoint */ |
3084 | dbg("found bulk in"); | |
3085 | ||
3086 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
3087 | edge_serial->read_urb = |
3088 | usb_alloc_urb(0, GFP_KERNEL); | |
6e8cf775 | 3089 | if (!edge_serial->read_urb) { |
194343d9 | 3090 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3091 | return -ENOMEM; |
3092 | } | |
03f0dbf7 AC |
3093 | edge_serial->bulk_in_buffer = |
3094 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 3095 | if (!edge_serial->bulk_in_buffer) { |
194343d9 | 3096 | dev_err(&dev->dev, "out of memory\n"); |
6e8cf775 GKH |
3097 | usb_free_urb(edge_serial->read_urb); |
3098 | return -ENOMEM; | |
3099 | } | |
03f0dbf7 AC |
3100 | edge_serial->bulk_in_endpoint = |
3101 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
3102 | |
3103 | /* set up our bulk in urb */ | |
3104 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
3105 | usb_rcvbulkpipe(dev, |
3106 | endpoint->bEndpointAddress), | |
3107 | edge_serial->bulk_in_buffer, | |
29cc8897 | 3108 | usb_endpoint_maxp(endpoint), |
03f0dbf7 AC |
3109 | edge_bulk_in_callback, |
3110 | edge_serial); | |
cb8eaa8b | 3111 | bulk_in_found = true; |
6e8cf775 GKH |
3112 | } |
3113 | ||
cb8eaa8b | 3114 | if (!bulk_out_found && |
6e8cf775 GKH |
3115 | (usb_endpoint_is_bulk_out(endpoint))) { |
3116 | /* we found a bulk out endpoint */ | |
3117 | dbg("found bulk out"); | |
03f0dbf7 AC |
3118 | edge_serial->bulk_out_endpoint = |
3119 | endpoint->bEndpointAddress; | |
cb8eaa8b | 3120 | bulk_out_found = true; |
6e8cf775 GKH |
3121 | } |
3122 | } | |
3123 | ||
cb8eaa8b | 3124 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
194343d9 GKH |
3125 | dev_err(&dev->dev, "Error - the proper endpoints " |
3126 | "were not found!\n"); | |
6e8cf775 GKH |
3127 | return -ENODEV; |
3128 | } | |
3129 | ||
3130 | /* start interrupt read for this edgeport this interrupt will | |
3131 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
3132 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
3133 | GFP_KERNEL); | |
6e8cf775 | 3134 | if (response) |
194343d9 GKH |
3135 | dev_err(&dev->dev, |
3136 | "%s - Error %d submitting control urb\n", | |
3137 | __func__, response); | |
6e8cf775 GKH |
3138 | } |
3139 | return response; | |
1da177e4 LT |
3140 | } |
3141 | ||
3142 | ||
3143 | /**************************************************************************** | |
f9c99bb8 | 3144 | * edge_disconnect |
1da177e4 LT |
3145 | * This function is called whenever the device is removed from the usb bus. |
3146 | ****************************************************************************/ | |
f9c99bb8 | 3147 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 3148 | { |
6e8cf775 | 3149 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 3150 | |
441b62c1 | 3151 | dbg("%s", __func__); |
1da177e4 LT |
3152 | |
3153 | /* stop reads and writes on all ports */ | |
6e8cf775 GKH |
3154 | /* free up our endpoint stuff */ |
3155 | if (edge_serial->is_epic) { | |
74ac07e8 | 3156 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
3157 | usb_free_urb(edge_serial->interrupt_read_urb); |
3158 | kfree(edge_serial->interrupt_in_buffer); | |
3159 | ||
74ac07e8 | 3160 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
3161 | usb_free_urb(edge_serial->read_urb); |
3162 | kfree(edge_serial->bulk_in_buffer); | |
3163 | } | |
f9c99bb8 AS |
3164 | } |
3165 | ||
3166 | ||
3167 | /**************************************************************************** | |
3168 | * edge_release | |
3169 | * This function is called when the device structure is deallocated. | |
3170 | ****************************************************************************/ | |
3171 | static void edge_release(struct usb_serial *serial) | |
3172 | { | |
3173 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
3174 | int i; | |
3175 | ||
3176 | dbg("%s", __func__); | |
3177 | ||
3178 | for (i = 0; i < serial->num_ports; ++i) | |
3179 | kfree(usb_get_serial_port_data(serial->port[i])); | |
6e8cf775 GKH |
3180 | |
3181 | kfree(edge_serial); | |
1da177e4 LT |
3182 | } |
3183 | ||
68e24113 | 3184 | module_usb_serial_driver(serial_drivers, id_table_combined); |
1da177e4 | 3185 | |
03f0dbf7 AC |
3186 | MODULE_AUTHOR(DRIVER_AUTHOR); |
3187 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3188 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3189 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3190 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3191 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3192 | MODULE_FIRMWARE("edgeport/down2.fw"); | |
1da177e4 LT |
3193 | |
3194 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
3195 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |