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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> | |
1da177e4 LT |
35 | #include <linux/slab.h> |
36 | #include <linux/tty.h> | |
37 | #include <linux/tty_driver.h> | |
38 | #include <linux/tty_flip.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/spinlock.h> | |
41 | #include <linux/serial.h> | |
42 | #include <linux/ioctl.h> | |
43 | #include <linux/wait.h> | |
5b9ea932 JS |
44 | #include <linux/firmware.h> |
45 | #include <linux/ihex.h> | |
03f0dbf7 | 46 | #include <linux/uaccess.h> |
1da177e4 | 47 | #include <linux/usb.h> |
a969888c | 48 | #include <linux/usb/serial.h> |
1da177e4 LT |
49 | #include "io_edgeport.h" |
50 | #include "io_ionsp.h" /* info for the iosp messages */ | |
51 | #include "io_16654.h" /* 16654 UART defines */ | |
52 | ||
1da177e4 LT |
53 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" |
54 | #define DRIVER_DESC "Edgeport USB Serial Driver" | |
55 | ||
1da177e4 LT |
56 | #define MAX_NAME_LEN 64 |
57 | ||
1da177e4 | 58 | #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ |
1da177e4 LT |
59 | |
60 | /* receive port state */ | |
61 | enum RXSTATE { | |
03f0dbf7 AC |
62 | EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
63 | EXPECT_HDR2 = 1, /* Expect header byte 2 */ | |
64 | EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ | |
65 | EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ | |
1da177e4 LT |
66 | }; |
67 | ||
68 | ||
03f0dbf7 AC |
69 | /* Transmit Fifo |
70 | * This Transmit queue is an extension of the edgeport Rx buffer. | |
71 | * The maximum amount of data buffered in both the edgeport | |
1da177e4 LT |
72 | * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
73 | */ | |
74 | struct TxFifo { | |
75 | unsigned int head; /* index to head pointer (write) */ | |
76 | unsigned int tail; /* index to tail pointer (read) */ | |
77 | unsigned int count; /* Bytes in queue */ | |
78 | unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ | |
79 | unsigned char *fifo; /* allocated Buffer */ | |
80 | }; | |
81 | ||
82 | /* This structure holds all of the local port information */ | |
83 | struct edgeport_port { | |
84 | __u16 txCredits; /* our current credits for this port */ | |
85 | __u16 maxTxCredits; /* the max size of the port */ | |
86 | ||
87 | struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ | |
88 | struct urb *write_urb; /* write URB for this port */ | |
cb8eaa8b | 89 | bool write_in_progress; /* 'true' while a write URB is outstanding */ |
1da177e4 LT |
90 | spinlock_t ep_lock; |
91 | ||
92 | __u8 shadowLCR; /* last LCR value received */ | |
93 | __u8 shadowMCR; /* last MCR value received */ | |
94 | __u8 shadowMSR; /* last MSR value received */ | |
95 | __u8 shadowLSR; /* last LSR value received */ | |
96 | __u8 shadowXonChar; /* last value set as XON char in Edgeport */ | |
97 | __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ | |
98 | __u8 validDataMask; | |
99 | __u32 baudRate; | |
100 | ||
cb8eaa8b RK |
101 | bool open; |
102 | bool openPending; | |
103 | bool commandPending; | |
104 | bool closePending; | |
105 | bool chaseResponsePending; | |
1da177e4 LT |
106 | |
107 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ | |
108 | wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ | |
109 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ | |
1da177e4 | 110 | |
1da177e4 LT |
111 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
112 | }; | |
113 | ||
114 | ||
115 | /* This structure holds all of the individual device information */ | |
116 | struct edgeport_serial { | |
ad93375a | 117 | char name[MAX_NAME_LEN+2]; /* string name of this device */ |
1da177e4 LT |
118 | |
119 | struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ | |
120 | struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ | |
121 | struct edgeport_product_info product_info; /* Product Info */ | |
6e8cf775 GKH |
122 | struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
123 | int is_epic; /* flag if EPiC device or not */ | |
1da177e4 LT |
124 | |
125 | __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ | |
03f0dbf7 AC |
126 | unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
127 | struct urb *interrupt_read_urb; /* our interrupt urb */ | |
1da177e4 LT |
128 | |
129 | __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ | |
03f0dbf7 AC |
130 | unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
131 | struct urb *read_urb; /* our bulk read urb */ | |
cb8eaa8b | 132 | bool read_in_progress; |
1da177e4 LT |
133 | spinlock_t es_lock; |
134 | ||
135 | __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ | |
136 | ||
137 | __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ | |
138 | ||
139 | enum RXSTATE rxState; /* the current state of the bulk receive processor */ | |
140 | __u8 rxHeader1; /* receive header byte 1 */ | |
141 | __u8 rxHeader2; /* receive header byte 2 */ | |
142 | __u8 rxHeader3; /* receive header byte 3 */ | |
143 | __u8 rxPort; /* the port that we are currently receiving data for */ | |
144 | __u8 rxStatusCode; /* the receive status code */ | |
145 | __u8 rxStatusParam; /* the receive status paramater */ | |
146 | __s16 rxBytesRemaining; /* the number of port bytes left to read */ | |
147 | struct usb_serial *serial; /* loop back to the owner of this object */ | |
148 | }; | |
149 | ||
150 | /* baud rate information */ | |
151 | struct divisor_table_entry { | |
152 | __u32 BaudRate; | |
153 | __u16 Divisor; | |
154 | }; | |
155 | ||
03f0dbf7 AC |
156 | /* |
157 | * Define table of divisors for Rev A EdgePort/4 hardware | |
158 | * These assume a 3.6864MHz crystal, the standard /16, and | |
159 | * MCR.7 = 0. | |
160 | */ | |
161 | ||
4c4c9432 | 162 | static const struct divisor_table_entry divisor_table[] = { |
03f0dbf7 AC |
163 | { 50, 4608}, |
164 | { 75, 3072}, | |
165 | { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ | |
166 | { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ | |
1da177e4 LT |
167 | { 150, 1536}, |
168 | { 300, 768}, | |
169 | { 600, 384}, | |
170 | { 1200, 192}, | |
171 | { 1800, 128}, | |
172 | { 2400, 96}, | |
173 | { 4800, 48}, | |
174 | { 7200, 32}, | |
175 | { 9600, 24}, | |
176 | { 14400, 16}, | |
177 | { 19200, 12}, | |
178 | { 38400, 6}, | |
179 | { 57600, 4}, | |
180 | { 115200, 2}, | |
181 | { 230400, 1}, | |
182 | }; | |
183 | ||
36ccce49 GKH |
184 | /* Number of outstanding Command Write Urbs */ |
185 | static atomic_t CmdUrbs = ATOMIC_INIT(0); | |
1da177e4 LT |
186 | |
187 | ||
188 | /* local function prototypes */ | |
189 | ||
190 | /* function prototypes for all URB callbacks */ | |
03f0dbf7 AC |
191 | static void edge_interrupt_callback(struct urb *urb); |
192 | static void edge_bulk_in_callback(struct urb *urb); | |
193 | static void edge_bulk_out_data_callback(struct urb *urb); | |
194 | static void edge_bulk_out_cmd_callback(struct urb *urb); | |
1da177e4 LT |
195 | |
196 | /* function prototypes for the usbserial callbacks */ | |
a509a7e4 | 197 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 198 | static void edge_close(struct usb_serial_port *port); |
03f0dbf7 AC |
199 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
200 | const unsigned char *buf, int count); | |
201 | static int edge_write_room(struct tty_struct *tty); | |
202 | static int edge_chars_in_buffer(struct tty_struct *tty); | |
203 | static void edge_throttle(struct tty_struct *tty); | |
204 | static void edge_unthrottle(struct tty_struct *tty); | |
205 | static void edge_set_termios(struct tty_struct *tty, | |
206 | struct usb_serial_port *port, | |
207 | struct ktermios *old_termios); | |
00a0d0d6 | 208 | static int edge_ioctl(struct tty_struct *tty, |
03f0dbf7 AC |
209 | unsigned int cmd, unsigned long arg); |
210 | static void edge_break(struct tty_struct *tty, int break_state); | |
60b33c13 | 211 | static int edge_tiocmget(struct tty_struct *tty); |
20b9d177 | 212 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 AC |
213 | unsigned int set, unsigned int clear); |
214 | static int edge_startup(struct usb_serial *serial); | |
f9c99bb8 AS |
215 | static void edge_disconnect(struct usb_serial *serial); |
216 | static void edge_release(struct usb_serial *serial); | |
c27f3efc JH |
217 | static int edge_port_probe(struct usb_serial_port *port); |
218 | static int edge_port_remove(struct usb_serial_port *port); | |
1da177e4 LT |
219 | |
220 | #include "io_tables.h" /* all of the devices that this driver supports */ | |
221 | ||
1da177e4 | 222 | /* function prototypes for all of our local functions */ |
03f0dbf7 AC |
223 | |
224 | static void process_rcvd_data(struct edgeport_serial *edge_serial, | |
225 | unsigned char *buffer, __u16 bufferLength); | |
226 | static void process_rcvd_status(struct edgeport_serial *edge_serial, | |
227 | __u8 byte2, __u8 byte3); | |
2e124b4a JS |
228 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
229 | int length); | |
03f0dbf7 AC |
230 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); |
231 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, | |
232 | __u8 lsr, __u8 data); | |
233 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, | |
234 | __u8 param); | |
984f6868 | 235 | static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); |
03f0dbf7 AC |
236 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
237 | int baudRate); | |
238 | static void change_port_settings(struct tty_struct *tty, | |
239 | struct edgeport_port *edge_port, | |
240 | struct ktermios *old_termios); | |
241 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, | |
242 | __u8 regNum, __u8 regValue); | |
243 | static int write_cmd_usb(struct edgeport_port *edge_port, | |
244 | unsigned char *buffer, int writeLength); | |
245 | static void send_more_port_data(struct edgeport_serial *edge_serial, | |
246 | struct edgeport_port *edge_port); | |
247 | ||
248 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
249 | __u16 length, const __u8 *data); | |
250 | static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
251 | __u16 length, __u8 *data); | |
252 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, | |
253 | __u16 length, const __u8 *data); | |
254 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial); | |
255 | static void get_boot_desc(struct edgeport_serial *edge_serial); | |
256 | static void load_application_firmware(struct edgeport_serial *edge_serial); | |
257 | ||
258 | static void unicode_to_ascii(char *string, int buflen, | |
259 | __le16 *unicode, int unicode_size); | |
260 | ||
261 | ||
262 | /* ************************************************************************ */ | |
263 | /* ************************************************************************ */ | |
264 | /* ************************************************************************ */ | |
265 | /* ************************************************************************ */ | |
1da177e4 LT |
266 | |
267 | /************************************************************************ | |
268 | * * | |
269 | * update_edgeport_E2PROM() Compare current versions of * | |
270 | * Boot ROM and Manufacture * | |
271 | * Descriptors with versions * | |
272 | * embedded in this driver * | |
273 | * * | |
274 | ************************************************************************/ | |
03f0dbf7 | 275 | static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
1da177e4 | 276 | { |
984f6868 | 277 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
278 | __u32 BootCurVer; |
279 | __u32 BootNewVer; | |
5b9ea932 JS |
280 | __u8 BootMajorVersion; |
281 | __u8 BootMinorVersion; | |
282 | __u16 BootBuildNumber; | |
283 | __u32 Bootaddr; | |
284 | const struct ihex_binrec *rec; | |
285 | const struct firmware *fw; | |
286 | const char *fw_name; | |
1da177e4 LT |
287 | int response; |
288 | ||
1da177e4 | 289 | switch (edge_serial->product_info.iDownloadFile) { |
03f0dbf7 AC |
290 | case EDGE_DOWNLOAD_FILE_I930: |
291 | fw_name = "edgeport/boot.fw"; | |
292 | break; | |
293 | case EDGE_DOWNLOAD_FILE_80251: | |
294 | fw_name = "edgeport/boot2.fw"; | |
295 | break; | |
296 | default: | |
297 | return; | |
1da177e4 LT |
298 | } |
299 | ||
5b9ea932 JS |
300 | response = request_ihex_firmware(&fw, fw_name, |
301 | &edge_serial->serial->dev->dev); | |
302 | if (response) { | |
984f6868 | 303 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
304 | fw_name, response); |
305 | return; | |
306 | } | |
307 | ||
308 | rec = (const struct ihex_binrec *)fw->data; | |
309 | BootMajorVersion = rec->data[0]; | |
310 | BootMinorVersion = rec->data[1]; | |
311 | BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; | |
312 | ||
03f0dbf7 | 313 | /* Check Boot Image Version */ |
1da177e4 LT |
314 | BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
315 | (edge_serial->boot_descriptor.MinorVersion << 16) + | |
316 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); | |
317 | ||
318 | BootNewVer = (BootMajorVersion << 24) + | |
319 | (BootMinorVersion << 16) + | |
5b9ea932 | 320 | BootBuildNumber; |
1da177e4 | 321 | |
984f6868 | 322 | dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", |
1da177e4 LT |
323 | edge_serial->boot_descriptor.MajorVersion, |
324 | edge_serial->boot_descriptor.MinorVersion, | |
325 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); | |
326 | ||
327 | ||
328 | if (BootNewVer > BootCurVer) { | |
984f6868 | 329 | dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", |
1da177e4 LT |
330 | edge_serial->boot_descriptor.MajorVersion, |
331 | edge_serial->boot_descriptor.MinorVersion, | |
332 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), | |
5b9ea932 | 333 | BootMajorVersion, BootMinorVersion, BootBuildNumber); |
1da177e4 | 334 | |
984f6868 | 335 | dev_dbg(dev, "Downloading new Boot Image\n"); |
1da177e4 | 336 | |
5b9ea932 JS |
337 | for (rec = ihex_next_binrec(rec); rec; |
338 | rec = ihex_next_binrec(rec)) { | |
339 | Bootaddr = be32_to_cpu(rec->addr); | |
340 | response = rom_write(edge_serial->serial, | |
341 | Bootaddr >> 16, | |
342 | Bootaddr & 0xFFFF, | |
343 | be16_to_cpu(rec->len), | |
344 | &rec->data[0]); | |
1da177e4 | 345 | if (response < 0) { |
5b9ea932 JS |
346 | dev_err(&edge_serial->serial->dev->dev, |
347 | "rom_write failed (%x, %x, %d)\n", | |
348 | Bootaddr >> 16, Bootaddr & 0xFFFF, | |
349 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
350 | break; |
351 | } | |
352 | } | |
353 | } else { | |
984f6868 | 354 | dev_dbg(dev, "Boot Image -- already up to date\n"); |
1da177e4 | 355 | } |
5b9ea932 | 356 | release_firmware(fw); |
1da177e4 LT |
357 | } |
358 | ||
1da177e4 LT |
359 | #if 0 |
360 | /************************************************************************ | |
361 | * | |
362 | * Get string descriptor from device | |
363 | * | |
364 | ************************************************************************/ | |
03f0dbf7 AC |
365 | static int get_string_desc(struct usb_device *dev, int Id, |
366 | struct usb_string_descriptor **pRetDesc) | |
1da177e4 LT |
367 | { |
368 | struct usb_string_descriptor StringDesc; | |
369 | struct usb_string_descriptor *pStringDesc; | |
370 | ||
984f6868 | 371 | dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); |
1da177e4 | 372 | |
03f0dbf7 AC |
373 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
374 | sizeof(StringDesc))) | |
1da177e4 | 375 | return 0; |
1da177e4 | 376 | |
03f0dbf7 AC |
377 | pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
378 | if (!pStringDesc) | |
1da177e4 | 379 | return -1; |
1da177e4 | 380 | |
03f0dbf7 AC |
381 | if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
382 | StringDesc.bLength)) { | |
1da177e4 LT |
383 | kfree(pStringDesc); |
384 | return -1; | |
385 | } | |
386 | ||
387 | *pRetDesc = pStringDesc; | |
388 | return 0; | |
389 | } | |
390 | #endif | |
391 | ||
984f6868 GKH |
392 | static void dump_product_info(struct edgeport_serial *edge_serial, |
393 | struct edgeport_product_info *product_info) | |
6e8cf775 | 394 | { |
984f6868 GKH |
395 | struct device *dev = &edge_serial->serial->dev->dev; |
396 | ||
03f0dbf7 | 397 | /* Dump Product Info structure */ |
984f6868 GKH |
398 | dev_dbg(dev, "**Product Information:\n"); |
399 | dev_dbg(dev, " ProductId %x\n", product_info->ProductId); | |
400 | dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); | |
401 | dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); | |
402 | dev_dbg(dev, " IsServer %d\n", product_info->IsServer); | |
403 | dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); | |
404 | dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); | |
405 | dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); | |
406 | dev_dbg(dev, " RomSize %d\n", product_info->RomSize); | |
407 | dev_dbg(dev, " RamSize %d\n", product_info->RamSize); | |
408 | dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); | |
409 | dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); | |
410 | dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", | |
411 | product_info->BootMajorVersion, | |
412 | product_info->BootMinorVersion, | |
413 | le16_to_cpu(product_info->BootBuildNumber)); | |
414 | dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", | |
415 | product_info->FirmwareMajorVersion, | |
416 | product_info->FirmwareMinorVersion, | |
417 | le16_to_cpu(product_info->FirmwareBuildNumber)); | |
418 | dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", | |
419 | product_info->ManufactureDescDate[0], | |
420 | product_info->ManufactureDescDate[1], | |
421 | product_info->ManufactureDescDate[2]+1900); | |
422 | dev_dbg(dev, " iDownloadFile 0x%x\n", | |
423 | product_info->iDownloadFile); | |
424 | dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); | |
6e8cf775 GKH |
425 | } |
426 | ||
1da177e4 LT |
427 | static void get_product_info(struct edgeport_serial *edge_serial) |
428 | { | |
429 | struct edgeport_product_info *product_info = &edge_serial->product_info; | |
430 | ||
03f0dbf7 AC |
431 | memset(product_info, 0, sizeof(struct edgeport_product_info)); |
432 | ||
433 | product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); | |
434 | product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; | |
435 | product_info->ProdInfoVer = 0; | |
436 | ||
437 | product_info->RomSize = edge_serial->manuf_descriptor.RomSize; | |
438 | product_info->RamSize = edge_serial->manuf_descriptor.RamSize; | |
439 | product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; | |
440 | product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; | |
441 | ||
442 | product_info->BootMajorVersion = | |
443 | edge_serial->boot_descriptor.MajorVersion; | |
444 | product_info->BootMinorVersion = | |
445 | edge_serial->boot_descriptor.MinorVersion; | |
446 | product_info->BootBuildNumber = | |
447 | edge_serial->boot_descriptor.BuildNumber; | |
448 | ||
449 | memcpy(product_info->ManufactureDescDate, | |
450 | edge_serial->manuf_descriptor.DescDate, | |
451 | sizeof(edge_serial->manuf_descriptor.DescDate)); | |
452 | ||
453 | /* check if this is 2nd generation hardware */ | |
454 | if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) | |
455 | & ION_DEVICE_ID_80251_NETCHIP) | |
456 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; | |
457 | else | |
458 | product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; | |
984f6868 | 459 | |
03f0dbf7 | 460 | /* Determine Product type and set appropriate flags */ |
1da177e4 | 461 | switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
03f0dbf7 AC |
462 | case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
463 | case ION_DEVICE_ID_EDGEPORT_4T: | |
464 | case ION_DEVICE_ID_EDGEPORT_4: | |
465 | case ION_DEVICE_ID_EDGEPORT_2: | |
466 | case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: | |
467 | case ION_DEVICE_ID_EDGEPORT_8: | |
468 | case ION_DEVICE_ID_EDGEPORT_421: | |
469 | case ION_DEVICE_ID_EDGEPORT_21: | |
470 | case ION_DEVICE_ID_EDGEPORT_2_DIN: | |
471 | case ION_DEVICE_ID_EDGEPORT_4_DIN: | |
472 | case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: | |
473 | product_info->IsRS232 = 1; | |
474 | break; | |
1da177e4 | 475 | |
03f0dbf7 AC |
476 | case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
477 | product_info->IsRS422 = 1; | |
478 | product_info->IsRS485 = 1; | |
479 | break; | |
1da177e4 | 480 | |
03f0dbf7 AC |
481 | case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
482 | case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ | |
483 | product_info->IsRS422 = 1; | |
484 | break; | |
1da177e4 LT |
485 | } |
486 | ||
984f6868 | 487 | dump_product_info(edge_serial, product_info); |
6e8cf775 | 488 | } |
1da177e4 | 489 | |
6e8cf775 GKH |
490 | static int get_epic_descriptor(struct edgeport_serial *ep) |
491 | { | |
492 | int result; | |
493 | struct usb_serial *serial = ep->serial; | |
494 | struct edgeport_product_info *product_info = &ep->product_info; | |
495 | struct edge_compatibility_descriptor *epic = &ep->epic_descriptor; | |
496 | struct edge_compatibility_bits *bits; | |
984f6868 | 497 | struct device *dev = &serial->dev->dev; |
6e8cf775 GKH |
498 | |
499 | ep->is_epic = 0; | |
500 | result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
501 | USB_REQUEST_ION_GET_EPIC_DESC, | |
502 | 0xC0, 0x00, 0x00, | |
503 | &ep->epic_descriptor, | |
504 | sizeof(struct edge_compatibility_descriptor), | |
505 | 300); | |
506 | ||
6e8cf775 GKH |
507 | if (result > 0) { |
508 | ep->is_epic = 1; | |
509 | memset(product_info, 0, sizeof(struct edgeport_product_info)); | |
510 | ||
03f0dbf7 AC |
511 | product_info->NumPorts = epic->NumPorts; |
512 | product_info->ProdInfoVer = 0; | |
513 | product_info->FirmwareMajorVersion = epic->MajorVersion; | |
514 | product_info->FirmwareMinorVersion = epic->MinorVersion; | |
515 | product_info->FirmwareBuildNumber = epic->BuildNumber; | |
516 | product_info->iDownloadFile = epic->iDownloadFile; | |
517 | product_info->EpicVer = epic->EpicVer; | |
518 | product_info->Epic = epic->Supports; | |
519 | product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; | |
984f6868 | 520 | dump_product_info(ep, product_info); |
6e8cf775 GKH |
521 | |
522 | bits = &ep->epic_descriptor.Supports; | |
984f6868 GKH |
523 | dev_dbg(dev, "**EPIC descriptor:\n"); |
524 | dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); | |
525 | dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); | |
526 | dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); | |
527 | dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); | |
528 | dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); | |
529 | dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); | |
530 | dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); | |
531 | dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); | |
532 | dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); | |
533 | dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); | |
534 | dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); | |
535 | dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); | |
536 | dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); | |
6e8cf775 GKH |
537 | } |
538 | ||
539 | return result; | |
1da177e4 LT |
540 | } |
541 | ||
542 | ||
543 | /************************************************************************/ | |
544 | /************************************************************************/ | |
545 | /* U S B C A L L B A C K F U N C T I O N S */ | |
546 | /* U S B C A L L B A C K F U N C T I O N S */ | |
547 | /************************************************************************/ | |
548 | /************************************************************************/ | |
549 | ||
550 | /***************************************************************************** | |
551 | * edge_interrupt_callback | |
03f0dbf7 | 552 | * this is the callback function for when we have received data on the |
1da177e4 LT |
553 | * interrupt endpoint. |
554 | *****************************************************************************/ | |
03f0dbf7 | 555 | static void edge_interrupt_callback(struct urb *urb) |
1da177e4 | 556 | { |
984f6868 GKH |
557 | struct edgeport_serial *edge_serial = urb->context; |
558 | struct device *dev; | |
1da177e4 LT |
559 | struct edgeport_port *edge_port; |
560 | struct usb_serial_port *port; | |
561 | unsigned char *data = urb->transfer_buffer; | |
562 | int length = urb->actual_length; | |
563 | int bytes_avail; | |
564 | int position; | |
565 | int txCredits; | |
566 | int portNumber; | |
567 | int result; | |
2a393f5f | 568 | int status = urb->status; |
1da177e4 | 569 | |
2a393f5f | 570 | switch (status) { |
1da177e4 LT |
571 | case 0: |
572 | /* success */ | |
573 | break; | |
574 | case -ECONNRESET: | |
575 | case -ENOENT: | |
576 | case -ESHUTDOWN: | |
577 | /* this urb is terminated, clean up */ | |
984f6868 | 578 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); |
1da177e4 LT |
579 | return; |
580 | default: | |
984f6868 | 581 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); |
1da177e4 LT |
582 | goto exit; |
583 | } | |
584 | ||
984f6868 GKH |
585 | dev = &edge_serial->serial->dev->dev; |
586 | ||
03f0dbf7 | 587 | /* process this interrupt-read even if there are no ports open */ |
1da177e4 | 588 | if (length) { |
59d33f2f | 589 | usb_serial_debug_data(dev, __func__, length, data); |
1da177e4 LT |
590 | |
591 | if (length > 1) { | |
592 | bytes_avail = data[0] | (data[1] << 8); | |
593 | if (bytes_avail) { | |
594 | spin_lock(&edge_serial->es_lock); | |
595 | edge_serial->rxBytesAvail += bytes_avail; | |
984f6868 GKH |
596 | dev_dbg(dev, |
597 | "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", | |
598 | __func__, bytes_avail, | |
599 | edge_serial->rxBytesAvail, | |
600 | edge_serial->read_in_progress); | |
1da177e4 LT |
601 | |
602 | if (edge_serial->rxBytesAvail > 0 && | |
603 | !edge_serial->read_in_progress) { | |
984f6868 | 604 | dev_dbg(dev, "%s - posting a read\n", __func__); |
cb8eaa8b | 605 | edge_serial->read_in_progress = true; |
1da177e4 | 606 | |
03f0dbf7 AC |
607 | /* we have pending bytes on the |
608 | bulk in pipe, send a request */ | |
1da177e4 LT |
609 | result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
610 | if (result) { | |
984f6868 GKH |
611 | dev_err(dev, |
612 | "%s - usb_submit_urb(read bulk) failed with result = %d\n", | |
613 | __func__, result); | |
cb8eaa8b | 614 | edge_serial->read_in_progress = false; |
1da177e4 LT |
615 | } |
616 | } | |
617 | spin_unlock(&edge_serial->es_lock); | |
618 | } | |
619 | } | |
620 | /* grab the txcredits for the ports if available */ | |
621 | position = 2; | |
622 | portNumber = 0; | |
03f0dbf7 AC |
623 | while ((position < length) && |
624 | (portNumber < edge_serial->serial->num_ports)) { | |
1da177e4 LT |
625 | txCredits = data[position] | (data[position+1] << 8); |
626 | if (txCredits) { | |
627 | port = edge_serial->serial->port[portNumber]; | |
628 | edge_port = usb_get_serial_port_data(port); | |
629 | if (edge_port->open) { | |
630 | spin_lock(&edge_port->ep_lock); | |
631 | edge_port->txCredits += txCredits; | |
632 | spin_unlock(&edge_port->ep_lock); | |
984f6868 GKH |
633 | dev_dbg(dev, "%s - txcredits for port%d = %d\n", |
634 | __func__, portNumber, | |
635 | edge_port->txCredits); | |
1da177e4 | 636 | |
03f0dbf7 AC |
637 | /* tell the tty driver that something |
638 | has changed */ | |
6aad04f2 | 639 | tty_port_tty_wakeup(&edge_port->port->port); |
03f0dbf7 AC |
640 | /* Since we have more credit, check |
641 | if more data can be sent */ | |
642 | send_more_port_data(edge_serial, | |
643 | edge_port); | |
1da177e4 LT |
644 | } |
645 | } | |
646 | position += 2; | |
647 | ++portNumber; | |
648 | } | |
649 | } | |
650 | ||
651 | exit: | |
03f0dbf7 AC |
652 | result = usb_submit_urb(urb, GFP_ATOMIC); |
653 | if (result) | |
654 | dev_err(&urb->dev->dev, | |
655 | "%s - Error %d submitting control urb\n", | |
656 | __func__, result); | |
1da177e4 LT |
657 | } |
658 | ||
659 | ||
660 | /***************************************************************************** | |
661 | * edge_bulk_in_callback | |
03f0dbf7 | 662 | * this is the callback function for when we have received data on the |
1da177e4 LT |
663 | * bulk in endpoint. |
664 | *****************************************************************************/ | |
03f0dbf7 | 665 | static void edge_bulk_in_callback(struct urb *urb) |
1da177e4 | 666 | { |
cdc97792 | 667 | struct edgeport_serial *edge_serial = urb->context; |
984f6868 | 668 | struct device *dev; |
1da177e4 | 669 | unsigned char *data = urb->transfer_buffer; |
2a393f5f | 670 | int retval; |
1da177e4 | 671 | __u16 raw_data_length; |
2a393f5f | 672 | int status = urb->status; |
1da177e4 | 673 | |
2a393f5f | 674 | if (status) { |
984f6868 GKH |
675 | dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
676 | __func__, status); | |
cb8eaa8b | 677 | edge_serial->read_in_progress = false; |
1da177e4 LT |
678 | return; |
679 | } | |
680 | ||
681 | if (urb->actual_length == 0) { | |
984f6868 | 682 | dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); |
cb8eaa8b | 683 | edge_serial->read_in_progress = false; |
1da177e4 LT |
684 | return; |
685 | } | |
686 | ||
984f6868 | 687 | dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
688 | raw_data_length = urb->actual_length; |
689 | ||
59d33f2f | 690 | usb_serial_debug_data(dev, __func__, raw_data_length, data); |
1da177e4 LT |
691 | |
692 | spin_lock(&edge_serial->es_lock); | |
693 | ||
694 | /* decrement our rxBytes available by the number that we just got */ | |
695 | edge_serial->rxBytesAvail -= raw_data_length; | |
696 | ||
984f6868 GKH |
697 | dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, |
698 | raw_data_length, edge_serial->rxBytesAvail); | |
1da177e4 | 699 | |
03f0dbf7 | 700 | process_rcvd_data(edge_serial, data, urb->actual_length); |
1da177e4 LT |
701 | |
702 | /* check to see if there's any more data for us to read */ | |
703 | if (edge_serial->rxBytesAvail > 0) { | |
984f6868 | 704 | dev_dbg(dev, "%s - posting a read\n", __func__); |
2a393f5f GKH |
705 | retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
706 | if (retval) { | |
984f6868 GKH |
707 | dev_err(dev, |
708 | "%s - usb_submit_urb(read bulk) failed, retval = %d\n", | |
709 | __func__, retval); | |
cb8eaa8b | 710 | edge_serial->read_in_progress = false; |
1da177e4 LT |
711 | } |
712 | } else { | |
cb8eaa8b | 713 | edge_serial->read_in_progress = false; |
1da177e4 LT |
714 | } |
715 | ||
716 | spin_unlock(&edge_serial->es_lock); | |
717 | } | |
718 | ||
719 | ||
720 | /***************************************************************************** | |
721 | * edge_bulk_out_data_callback | |
03f0dbf7 AC |
722 | * this is the callback function for when we have finished sending |
723 | * serial data on the bulk out endpoint. | |
1da177e4 | 724 | *****************************************************************************/ |
03f0dbf7 | 725 | static void edge_bulk_out_data_callback(struct urb *urb) |
1da177e4 | 726 | { |
cdc97792 | 727 | struct edgeport_port *edge_port = urb->context; |
2a393f5f | 728 | int status = urb->status; |
1da177e4 | 729 | |
2a393f5f | 730 | if (status) { |
984f6868 GKH |
731 | dev_dbg(&urb->dev->dev, |
732 | "%s - nonzero write bulk status received: %d\n", | |
733 | __func__, status); | |
1da177e4 LT |
734 | } |
735 | ||
6aad04f2 JS |
736 | if (edge_port->open) |
737 | tty_port_tty_wakeup(&edge_port->port->port); | |
1da177e4 | 738 | |
03f0dbf7 | 739 | /* Release the Write URB */ |
cb8eaa8b | 740 | edge_port->write_in_progress = false; |
1da177e4 | 741 | |
03f0dbf7 AC |
742 | /* Check if more data needs to be sent */ |
743 | send_more_port_data((struct edgeport_serial *) | |
744 | (usb_get_serial_data(edge_port->port->serial)), edge_port); | |
1da177e4 LT |
745 | } |
746 | ||
747 | ||
748 | /***************************************************************************** | |
749 | * BulkOutCmdCallback | |
03f0dbf7 AC |
750 | * this is the callback function for when we have finished sending a |
751 | * command on the bulk out endpoint. | |
1da177e4 | 752 | *****************************************************************************/ |
03f0dbf7 | 753 | static void edge_bulk_out_cmd_callback(struct urb *urb) |
1da177e4 | 754 | { |
cdc97792 | 755 | struct edgeport_port *edge_port = urb->context; |
1da177e4 LT |
756 | int status = urb->status; |
757 | ||
96c706ed | 758 | atomic_dec(&CmdUrbs); |
984f6868 GKH |
759 | dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", |
760 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 LT |
761 | |
762 | ||
763 | /* clean up the transfer buffer */ | |
1bc3c9e1 | 764 | kfree(urb->transfer_buffer); |
1da177e4 LT |
765 | |
766 | /* Free the command urb */ | |
03f0dbf7 | 767 | usb_free_urb(urb); |
1da177e4 LT |
768 | |
769 | if (status) { | |
984f6868 GKH |
770 | dev_dbg(&urb->dev->dev, |
771 | "%s - nonzero write bulk status received: %d\n", | |
772 | __func__, status); | |
1da177e4 LT |
773 | return; |
774 | } | |
775 | ||
1da177e4 | 776 | /* tell the tty driver that something has changed */ |
6aad04f2 JS |
777 | if (edge_port->open) |
778 | tty_port_tty_wakeup(&edge_port->port->port); | |
1da177e4 LT |
779 | |
780 | /* we have completed the command */ | |
cb8eaa8b | 781 | edge_port->commandPending = false; |
1da177e4 LT |
782 | wake_up(&edge_port->wait_command); |
783 | } | |
784 | ||
785 | ||
786 | /***************************************************************************** | |
787 | * Driver tty interface functions | |
788 | *****************************************************************************/ | |
789 | ||
790 | /***************************************************************************** | |
791 | * SerialOpen | |
792 | * this function is called by the tty driver when a port is opened | |
793 | * If successful, we return 0 | |
794 | * Otherwise we return a negative error number. | |
795 | *****************************************************************************/ | |
a509a7e4 | 796 | static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
797 | { |
798 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
984f6868 | 799 | struct device *dev = &port->dev; |
1da177e4 LT |
800 | struct usb_serial *serial; |
801 | struct edgeport_serial *edge_serial; | |
802 | int response; | |
803 | ||
1da177e4 LT |
804 | if (edge_port == NULL) |
805 | return -ENODEV; | |
806 | ||
03f0dbf7 AC |
807 | /* see if we've set up our endpoint info yet (can't set it up |
808 | in edge_startup as the structures were not set up at that time.) */ | |
1da177e4 LT |
809 | serial = port->serial; |
810 | edge_serial = usb_get_serial_data(serial); | |
95da310e | 811 | if (edge_serial == NULL) |
1da177e4 | 812 | return -ENODEV; |
1da177e4 LT |
813 | if (edge_serial->interrupt_in_buffer == NULL) { |
814 | struct usb_serial_port *port0 = serial->port[0]; | |
03f0dbf7 | 815 | |
1da177e4 | 816 | /* not set up yet, so do it now */ |
03f0dbf7 AC |
817 | edge_serial->interrupt_in_buffer = |
818 | port0->interrupt_in_buffer; | |
819 | edge_serial->interrupt_in_endpoint = | |
820 | port0->interrupt_in_endpointAddress; | |
1da177e4 LT |
821 | edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
822 | edge_serial->bulk_in_buffer = port0->bulk_in_buffer; | |
03f0dbf7 AC |
823 | edge_serial->bulk_in_endpoint = |
824 | port0->bulk_in_endpointAddress; | |
1da177e4 | 825 | edge_serial->read_urb = port0->read_urb; |
03f0dbf7 AC |
826 | edge_serial->bulk_out_endpoint = |
827 | port0->bulk_out_endpointAddress; | |
828 | ||
1da177e4 LT |
829 | /* set up our interrupt urb */ |
830 | usb_fill_int_urb(edge_serial->interrupt_read_urb, | |
03f0dbf7 AC |
831 | serial->dev, |
832 | usb_rcvintpipe(serial->dev, | |
833 | port0->interrupt_in_endpointAddress), | |
834 | port0->interrupt_in_buffer, | |
835 | edge_serial->interrupt_read_urb->transfer_buffer_length, | |
836 | edge_interrupt_callback, edge_serial, | |
837 | edge_serial->interrupt_read_urb->interval); | |
838 | ||
1da177e4 LT |
839 | /* set up our bulk in urb */ |
840 | usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, | |
03f0dbf7 AC |
841 | usb_rcvbulkpipe(serial->dev, |
842 | port0->bulk_in_endpointAddress), | |
843 | port0->bulk_in_buffer, | |
844 | edge_serial->read_urb->transfer_buffer_length, | |
845 | edge_bulk_in_callback, edge_serial); | |
cb8eaa8b | 846 | edge_serial->read_in_progress = false; |
1da177e4 LT |
847 | |
848 | /* start interrupt read for this edgeport | |
03f0dbf7 AC |
849 | * this interrupt will continue as long |
850 | * as the edgeport is connected */ | |
851 | response = usb_submit_urb(edge_serial->interrupt_read_urb, | |
852 | GFP_KERNEL); | |
1da177e4 | 853 | if (response) { |
984f6868 GKH |
854 | dev_err(dev, "%s - Error %d submitting control urb\n", |
855 | __func__, response); | |
1da177e4 LT |
856 | } |
857 | } | |
03f0dbf7 | 858 | |
1da177e4 LT |
859 | /* initialize our wait queues */ |
860 | init_waitqueue_head(&edge_port->wait_open); | |
861 | init_waitqueue_head(&edge_port->wait_chase); | |
1da177e4 LT |
862 | init_waitqueue_head(&edge_port->wait_command); |
863 | ||
1da177e4 | 864 | /* initialize our port settings */ |
03f0dbf7 AC |
865 | edge_port->txCredits = 0; /* Can't send any data yet */ |
866 | /* Must always set this bit to enable ints! */ | |
867 | edge_port->shadowMCR = MCR_MASTER_IE; | |
cb8eaa8b | 868 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
869 | |
870 | /* send a open port command */ | |
cb8eaa8b RK |
871 | edge_port->openPending = true; |
872 | edge_port->open = false; | |
03f0dbf7 | 873 | response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
1da177e4 LT |
874 | |
875 | if (response < 0) { | |
984f6868 | 876 | dev_err(dev, "%s - error sending open port command\n", __func__); |
cb8eaa8b | 877 | edge_port->openPending = false; |
1da177e4 LT |
878 | return -ENODEV; |
879 | } | |
880 | ||
881 | /* now wait for the port to be completely opened */ | |
03f0dbf7 AC |
882 | wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
883 | OPEN_TIMEOUT); | |
1da177e4 | 884 | |
cb8eaa8b | 885 | if (!edge_port->open) { |
1da177e4 | 886 | /* open timed out */ |
984f6868 | 887 | dev_dbg(dev, "%s - open timedout\n", __func__); |
cb8eaa8b | 888 | edge_port->openPending = false; |
1da177e4 LT |
889 | return -ENODEV; |
890 | } | |
891 | ||
892 | /* create the txfifo */ | |
893 | edge_port->txfifo.head = 0; | |
894 | edge_port->txfifo.tail = 0; | |
895 | edge_port->txfifo.count = 0; | |
896 | edge_port->txfifo.size = edge_port->maxTxCredits; | |
03f0dbf7 | 897 | edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
1da177e4 LT |
898 | |
899 | if (!edge_port->txfifo.fifo) { | |
335f8514 | 900 | edge_close(port); |
1da177e4 LT |
901 | return -ENOMEM; |
902 | } | |
903 | ||
904 | /* Allocate a URB for the write */ | |
03f0dbf7 | 905 | edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
cb8eaa8b | 906 | edge_port->write_in_progress = false; |
1da177e4 LT |
907 | |
908 | if (!edge_port->write_urb) { | |
335f8514 | 909 | edge_close(port); |
1da177e4 LT |
910 | return -ENOMEM; |
911 | } | |
912 | ||
1143832e GKH |
913 | dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", |
914 | __func__, edge_port->maxTxCredits); | |
1da177e4 LT |
915 | |
916 | return 0; | |
917 | } | |
918 | ||
919 | ||
920 | /************************************************************************ | |
921 | * | |
922 | * block_until_chase_response | |
923 | * | |
924 | * This function will block the close until one of the following: | |
925 | * 1. Response to our Chase comes from Edgeport | |
dc0d5c1e | 926 | * 2. A timeout of 10 seconds without activity has expired |
1da177e4 LT |
927 | * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
928 | * | |
929 | ************************************************************************/ | |
930 | static void block_until_chase_response(struct edgeport_port *edge_port) | |
931 | { | |
984f6868 | 932 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
933 | DEFINE_WAIT(wait); |
934 | __u16 lastCredits; | |
935 | int timeout = 1*HZ; | |
936 | int loop = 10; | |
937 | ||
938 | while (1) { | |
03f0dbf7 | 939 | /* Save Last credits */ |
1da177e4 LT |
940 | lastCredits = edge_port->txCredits; |
941 | ||
03f0dbf7 | 942 | /* Did we get our Chase response */ |
cb8eaa8b | 943 | if (!edge_port->chaseResponsePending) { |
984f6868 | 944 | dev_dbg(dev, "%s - Got Chase Response\n", __func__); |
1da177e4 | 945 | |
03f0dbf7 AC |
946 | /* did we get all of our credit back? */ |
947 | if (edge_port->txCredits == edge_port->maxTxCredits) { | |
984f6868 | 948 | dev_dbg(dev, "%s - Got all credits\n", __func__); |
1da177e4 LT |
949 | return; |
950 | } | |
951 | } | |
952 | ||
03f0dbf7 AC |
953 | /* Block the thread for a while */ |
954 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
955 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
956 | schedule_timeout(timeout); |
957 | finish_wait(&edge_port->wait_chase, &wait); | |
958 | ||
959 | if (lastCredits == edge_port->txCredits) { | |
03f0dbf7 | 960 | /* No activity.. count down. */ |
1da177e4 LT |
961 | loop--; |
962 | if (loop == 0) { | |
cb8eaa8b | 963 | edge_port->chaseResponsePending = false; |
984f6868 | 964 | dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); |
1da177e4 LT |
965 | return; |
966 | } | |
967 | } else { | |
03f0dbf7 | 968 | /* Reset timeout value back to 10 seconds */ |
984f6868 | 969 | dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, |
03f0dbf7 | 970 | lastCredits, edge_port->txCredits); |
1da177e4 LT |
971 | loop = 10; |
972 | } | |
973 | } | |
974 | } | |
975 | ||
976 | ||
977 | /************************************************************************ | |
978 | * | |
979 | * block_until_tx_empty | |
980 | * | |
981 | * This function will block the close until one of the following: | |
982 | * 1. TX count are 0 | |
983 | * 2. The edgeport has stopped | |
dc0d5c1e | 984 | * 3. A timeout of 3 seconds without activity has expired |
1da177e4 LT |
985 | * |
986 | ************************************************************************/ | |
03f0dbf7 | 987 | static void block_until_tx_empty(struct edgeport_port *edge_port) |
1da177e4 | 988 | { |
984f6868 | 989 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
990 | DEFINE_WAIT(wait); |
991 | struct TxFifo *fifo = &edge_port->txfifo; | |
992 | __u32 lastCount; | |
993 | int timeout = HZ/10; | |
994 | int loop = 30; | |
995 | ||
996 | while (1) { | |
03f0dbf7 | 997 | /* Save Last count */ |
1da177e4 LT |
998 | lastCount = fifo->count; |
999 | ||
03f0dbf7 | 1000 | /* Is the Edgeport Buffer empty? */ |
1da177e4 | 1001 | if (lastCount == 0) { |
984f6868 | 1002 | dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); |
1da177e4 LT |
1003 | return; |
1004 | } | |
1005 | ||
03f0dbf7 AC |
1006 | /* Block the thread for a while */ |
1007 | prepare_to_wait(&edge_port->wait_chase, &wait, | |
1008 | TASK_UNINTERRUPTIBLE); | |
1da177e4 LT |
1009 | schedule_timeout(timeout); |
1010 | finish_wait(&edge_port->wait_chase, &wait); | |
1011 | ||
984f6868 | 1012 | dev_dbg(dev, "%s wait\n", __func__); |
1da177e4 LT |
1013 | |
1014 | if (lastCount == fifo->count) { | |
03f0dbf7 | 1015 | /* No activity.. count down. */ |
1da177e4 LT |
1016 | loop--; |
1017 | if (loop == 0) { | |
984f6868 | 1018 | dev_dbg(dev, "%s - TIMEOUT\n", __func__); |
1da177e4 LT |
1019 | return; |
1020 | } | |
1021 | } else { | |
03f0dbf7 | 1022 | /* Reset timeout value back to seconds */ |
1da177e4 LT |
1023 | loop = 30; |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | ||
1029 | /***************************************************************************** | |
1030 | * edge_close | |
1031 | * this function is called by the tty driver when a port is closed | |
1032 | *****************************************************************************/ | |
335f8514 | 1033 | static void edge_close(struct usb_serial_port *port) |
1da177e4 LT |
1034 | { |
1035 | struct edgeport_serial *edge_serial; | |
1036 | struct edgeport_port *edge_port; | |
1037 | int status; | |
1038 | ||
1da177e4 LT |
1039 | edge_serial = usb_get_serial_data(port->serial); |
1040 | edge_port = usb_get_serial_port_data(port); | |
03f0dbf7 | 1041 | if (edge_serial == NULL || edge_port == NULL) |
1da177e4 | 1042 | return; |
03f0dbf7 AC |
1043 | |
1044 | /* block until tx is empty */ | |
1da177e4 LT |
1045 | block_until_tx_empty(edge_port); |
1046 | ||
cb8eaa8b | 1047 | edge_port->closePending = true; |
1da177e4 | 1048 | |
232dce89 GB |
1049 | if (!edge_serial->is_epic || |
1050 | edge_serial->epic_descriptor.Supports.IOSPChase) { | |
6e8cf775 | 1051 | /* flush and chase */ |
cb8eaa8b | 1052 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1053 | |
984f6868 | 1054 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 AC |
1055 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
1056 | if (status == 0) | |
1057 | /* block until chase finished */ | |
6e8cf775 | 1058 | block_until_chase_response(edge_port); |
03f0dbf7 | 1059 | else |
cb8eaa8b | 1060 | edge_port->chaseResponsePending = false; |
1da177e4 LT |
1061 | } |
1062 | ||
232dce89 GB |
1063 | if (!edge_serial->is_epic || |
1064 | edge_serial->epic_descriptor.Supports.IOSPClose) { | |
6e8cf775 | 1065 | /* close the port */ |
984f6868 | 1066 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); |
03f0dbf7 | 1067 | send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
6e8cf775 | 1068 | } |
1da177e4 | 1069 | |
03f0dbf7 | 1070 | /* port->close = true; */ |
cb8eaa8b RK |
1071 | edge_port->closePending = false; |
1072 | edge_port->open = false; | |
1073 | edge_port->openPending = false; | |
1da177e4 | 1074 | |
9a25f44f | 1075 | usb_kill_urb(edge_port->write_urb); |
1da177e4 LT |
1076 | |
1077 | if (edge_port->write_urb) { | |
03f0dbf7 AC |
1078 | /* if this urb had a transfer buffer already |
1079 | (old transfer) free it */ | |
1bc3c9e1 JJ |
1080 | kfree(edge_port->write_urb->transfer_buffer); |
1081 | usb_free_urb(edge_port->write_urb); | |
1da177e4 LT |
1082 | edge_port->write_urb = NULL; |
1083 | } | |
1bc3c9e1 JJ |
1084 | kfree(edge_port->txfifo.fifo); |
1085 | edge_port->txfifo.fifo = NULL; | |
03f0dbf7 | 1086 | } |
1da177e4 LT |
1087 | |
1088 | /***************************************************************************** | |
1089 | * SerialWrite | |
03f0dbf7 AC |
1090 | * this function is called by the tty driver when data should be written |
1091 | * to the port. | |
1092 | * If successful, we return the number of bytes written, otherwise we | |
1093 | * return a negative error number. | |
1da177e4 | 1094 | *****************************************************************************/ |
95da310e AC |
1095 | static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
1096 | const unsigned char *data, int count) | |
1da177e4 LT |
1097 | { |
1098 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1099 | struct TxFifo *fifo; | |
1100 | int copySize; | |
1101 | int bytesleft; | |
1102 | int firsthalf; | |
1103 | int secondhalf; | |
1104 | unsigned long flags; | |
1105 | ||
1da177e4 LT |
1106 | if (edge_port == NULL) |
1107 | return -ENODEV; | |
1108 | ||
03f0dbf7 | 1109 | /* get a pointer to the Tx fifo */ |
1da177e4 LT |
1110 | fifo = &edge_port->txfifo; |
1111 | ||
1112 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1113 | ||
03f0dbf7 AC |
1114 | /* calculate number of bytes to put in fifo */ |
1115 | copySize = min((unsigned int)count, | |
1116 | (edge_port->txCredits - fifo->count)); | |
1da177e4 | 1117 | |
1143832e GKH |
1118 | dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", |
1119 | __func__, count, edge_port->txCredits - fifo->count, copySize); | |
1da177e4 | 1120 | |
03f0dbf7 AC |
1121 | /* catch writes of 0 bytes which the tty driver likes to give us, |
1122 | and when txCredits is empty */ | |
1da177e4 | 1123 | if (copySize == 0) { |
984f6868 | 1124 | dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); |
1da177e4 LT |
1125 | goto finish_write; |
1126 | } | |
1127 | ||
03f0dbf7 AC |
1128 | /* queue the data |
1129 | * since we can never overflow the buffer we do not have to check for a | |
1130 | * full condition | |
1131 | * | |
1132 | * the copy is done is two parts -- first fill to the end of the buffer | |
1133 | * then copy the reset from the start of the buffer | |
1134 | */ | |
1da177e4 | 1135 | bytesleft = fifo->size - fifo->head; |
03f0dbf7 | 1136 | firsthalf = min(bytesleft, copySize); |
984f6868 GKH |
1137 | dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, |
1138 | firsthalf, bytesleft); | |
1da177e4 LT |
1139 | |
1140 | /* now copy our data */ | |
1141 | memcpy(&fifo->fifo[fifo->head], data, firsthalf); | |
59d33f2f | 1142 | usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); |
1da177e4 | 1143 | |
03f0dbf7 | 1144 | /* update the index and size */ |
1da177e4 LT |
1145 | fifo->head += firsthalf; |
1146 | fifo->count += firsthalf; | |
1147 | ||
03f0dbf7 AC |
1148 | /* wrap the index */ |
1149 | if (fifo->head == fifo->size) | |
1da177e4 | 1150 | fifo->head = 0; |
1da177e4 LT |
1151 | |
1152 | secondhalf = copySize-firsthalf; | |
1153 | ||
1154 | if (secondhalf) { | |
984f6868 | 1155 | dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); |
1da177e4 | 1156 | memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
59d33f2f | 1157 | usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); |
03f0dbf7 | 1158 | /* update the index and size */ |
1da177e4 LT |
1159 | fifo->count += secondhalf; |
1160 | fifo->head += secondhalf; | |
03f0dbf7 AC |
1161 | /* No need to check for wrap since we can not get to end of |
1162 | * the fifo in this part | |
1163 | */ | |
1da177e4 LT |
1164 | } |
1165 | ||
1166 | finish_write: | |
1167 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1168 | ||
03f0dbf7 AC |
1169 | send_more_port_data((struct edgeport_serial *) |
1170 | usb_get_serial_data(port->serial), edge_port); | |
1da177e4 | 1171 | |
984f6868 GKH |
1172 | dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", |
1173 | __func__, copySize, edge_port->txCredits, fifo->count); | |
1da177e4 | 1174 | |
03f0dbf7 | 1175 | return copySize; |
1da177e4 LT |
1176 | } |
1177 | ||
1178 | ||
1179 | /************************************************************************ | |
1180 | * | |
1181 | * send_more_port_data() | |
1182 | * | |
1183 | * This routine attempts to write additional UART transmit data | |
1184 | * to a port over the USB bulk pipe. It is called (1) when new | |
1185 | * data has been written to a port's TxBuffer from higher layers | |
1186 | * (2) when the peripheral sends us additional TxCredits indicating | |
1187 | * that it can accept more Tx data for a given port; and (3) when | |
1188 | * a bulk write completes successfully and we want to see if we | |
1189 | * can transmit more. | |
1190 | * | |
1191 | ************************************************************************/ | |
03f0dbf7 AC |
1192 | static void send_more_port_data(struct edgeport_serial *edge_serial, |
1193 | struct edgeport_port *edge_port) | |
1da177e4 LT |
1194 | { |
1195 | struct TxFifo *fifo = &edge_port->txfifo; | |
984f6868 | 1196 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
1197 | struct urb *urb; |
1198 | unsigned char *buffer; | |
1199 | int status; | |
1200 | int count; | |
1201 | int bytesleft; | |
1202 | int firsthalf; | |
1203 | int secondhalf; | |
1204 | unsigned long flags; | |
1205 | ||
1da177e4 LT |
1206 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1207 | ||
1208 | if (edge_port->write_in_progress || | |
1209 | !edge_port->open || | |
1210 | (fifo->count == 0)) { | |
1143832e GKH |
1211 | dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", |
1212 | __func__, fifo->count, edge_port->write_in_progress); | |
1da177e4 LT |
1213 | goto exit_send; |
1214 | } | |
1215 | ||
03f0dbf7 AC |
1216 | /* since the amount of data in the fifo will always fit into the |
1217 | * edgeport buffer we do not need to check the write length | |
1218 | * | |
1219 | * Do we have enough credits for this port to make it worthwhile | |
1220 | * to bother queueing a write. If it's too small, say a few bytes, | |
1221 | * it's better to wait for more credits so we can do a larger write. | |
1222 | */ | |
1223 | if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { | |
1143832e GKH |
1224 | dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", |
1225 | __func__, fifo->count, edge_port->txCredits); | |
1da177e4 LT |
1226 | goto exit_send; |
1227 | } | |
1228 | ||
03f0dbf7 | 1229 | /* lock this write */ |
cb8eaa8b | 1230 | edge_port->write_in_progress = true; |
1da177e4 | 1231 | |
03f0dbf7 | 1232 | /* get a pointer to the write_urb */ |
1da177e4 LT |
1233 | urb = edge_port->write_urb; |
1234 | ||
1bc3c9e1 JJ |
1235 | /* make sure transfer buffer is freed */ |
1236 | kfree(urb->transfer_buffer); | |
1237 | urb->transfer_buffer = NULL; | |
1da177e4 | 1238 | |
03f0dbf7 AC |
1239 | /* build the data header for the buffer and port that we are about |
1240 | to send out */ | |
1da177e4 | 1241 | count = fifo->count; |
03f0dbf7 | 1242 | buffer = kmalloc(count+2, GFP_ATOMIC); |
10c642d0 | 1243 | if (!buffer) { |
cb8eaa8b | 1244 | edge_port->write_in_progress = false; |
1da177e4 LT |
1245 | goto exit_send; |
1246 | } | |
1143832e GKH |
1247 | buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); |
1248 | buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); | |
1da177e4 LT |
1249 | |
1250 | /* now copy our data */ | |
1251 | bytesleft = fifo->size - fifo->tail; | |
03f0dbf7 | 1252 | firsthalf = min(bytesleft, count); |
1da177e4 LT |
1253 | memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
1254 | fifo->tail += firsthalf; | |
1255 | fifo->count -= firsthalf; | |
03f0dbf7 | 1256 | if (fifo->tail == fifo->size) |
1da177e4 | 1257 | fifo->tail = 0; |
1da177e4 LT |
1258 | |
1259 | secondhalf = count-firsthalf; | |
1260 | if (secondhalf) { | |
03f0dbf7 AC |
1261 | memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
1262 | secondhalf); | |
1da177e4 LT |
1263 | fifo->tail += secondhalf; |
1264 | fifo->count -= secondhalf; | |
1265 | } | |
1266 | ||
1267 | if (count) | |
59d33f2f | 1268 | usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); |
1da177e4 LT |
1269 | |
1270 | /* fill up the urb with all of our data and submit it */ | |
03f0dbf7 AC |
1271 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
1272 | usb_sndbulkpipe(edge_serial->serial->dev, | |
1273 | edge_serial->bulk_out_endpoint), | |
1274 | buffer, count+2, | |
1275 | edge_bulk_out_data_callback, edge_port); | |
1da177e4 LT |
1276 | |
1277 | /* decrement the number of credits we have by the number we just sent */ | |
1278 | edge_port->txCredits -= count; | |
d36a7712 | 1279 | edge_port->port->icount.tx += count; |
1da177e4 | 1280 | |
1da177e4 LT |
1281 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1282 | if (status) { | |
1283 | /* something went wrong */ | |
22a416c4 | 1284 | dev_err_console(edge_port->port, |
03f0dbf7 AC |
1285 | "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", |
1286 | __func__, status); | |
cb8eaa8b | 1287 | edge_port->write_in_progress = false; |
1da177e4 LT |
1288 | |
1289 | /* revert the credits as something bad happened. */ | |
1290 | edge_port->txCredits += count; | |
d36a7712 | 1291 | edge_port->port->icount.tx -= count; |
1da177e4 | 1292 | } |
984f6868 GKH |
1293 | dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", |
1294 | __func__, count, edge_port->txCredits, fifo->count); | |
1da177e4 LT |
1295 | |
1296 | exit_send: | |
1297 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1298 | } | |
1299 | ||
1300 | ||
1301 | /***************************************************************************** | |
1302 | * edge_write_room | |
03f0dbf7 AC |
1303 | * this function is called by the tty driver when it wants to know how |
1304 | * many bytes of data we can accept for a specific port. If successful, | |
1305 | * we return the amount of room that we have for this port (the txCredits) | |
1306 | * otherwise we return a negative error number. | |
1da177e4 | 1307 | *****************************************************************************/ |
95da310e | 1308 | static int edge_write_room(struct tty_struct *tty) |
1da177e4 | 1309 | { |
95da310e | 1310 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1311 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1312 | int room; | |
1313 | unsigned long flags; | |
1314 | ||
1da177e4 | 1315 | if (edge_port == NULL) |
d76f2f44 | 1316 | return 0; |
cb8eaa8b | 1317 | if (edge_port->closePending) |
d76f2f44 | 1318 | return 0; |
1da177e4 | 1319 | |
1da177e4 | 1320 | if (!edge_port->open) { |
984f6868 | 1321 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1322 | return 0; |
1da177e4 LT |
1323 | } |
1324 | ||
03f0dbf7 | 1325 | /* total of both buffers is still txCredit */ |
1da177e4 LT |
1326 | spin_lock_irqsave(&edge_port->ep_lock, flags); |
1327 | room = edge_port->txCredits - edge_port->txfifo.count; | |
1328 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1329 | ||
984f6868 | 1330 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
1da177e4 LT |
1331 | return room; |
1332 | } | |
1333 | ||
1334 | ||
1335 | /***************************************************************************** | |
1336 | * edge_chars_in_buffer | |
03f0dbf7 AC |
1337 | * this function is called by the tty driver when it wants to know how |
1338 | * many bytes of data we currently have outstanding in the port (data that | |
1339 | * has been written, but hasn't made it out the port yet) | |
1340 | * If successful, we return the number of bytes left to be written in the | |
1341 | * system, | |
1da177e4 LT |
1342 | * Otherwise we return a negative error number. |
1343 | *****************************************************************************/ | |
95da310e | 1344 | static int edge_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1345 | { |
95da310e | 1346 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1347 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1348 | int num_chars; | |
1349 | unsigned long flags; | |
1350 | ||
1da177e4 | 1351 | if (edge_port == NULL) |
d76f2f44 | 1352 | return 0; |
cb8eaa8b | 1353 | if (edge_port->closePending) |
d76f2f44 | 1354 | return 0; |
1da177e4 LT |
1355 | |
1356 | if (!edge_port->open) { | |
984f6868 | 1357 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
d76f2f44 | 1358 | return 0; |
1da177e4 LT |
1359 | } |
1360 | ||
1361 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
03f0dbf7 AC |
1362 | num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
1363 | edge_port->txfifo.count; | |
1da177e4 LT |
1364 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
1365 | if (num_chars) { | |
1143832e | 1366 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); |
1da177e4 LT |
1367 | } |
1368 | ||
1369 | return num_chars; | |
1370 | } | |
1371 | ||
1372 | ||
1373 | /***************************************************************************** | |
1374 | * SerialThrottle | |
1375 | * this function is called by the tty driver when it wants to stop the data | |
1376 | * being read from the port. | |
1377 | *****************************************************************************/ | |
95da310e | 1378 | static void edge_throttle(struct tty_struct *tty) |
1da177e4 | 1379 | { |
95da310e | 1380 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1381 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1382 | int status; |
1383 | ||
1da177e4 LT |
1384 | if (edge_port == NULL) |
1385 | return; | |
1386 | ||
1387 | if (!edge_port->open) { | |
984f6868 | 1388 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1389 | return; |
1390 | } | |
1391 | ||
1da177e4 LT |
1392 | /* if we are implementing XON/XOFF, send the stop character */ |
1393 | if (I_IXOFF(tty)) { | |
1394 | unsigned char stop_char = STOP_CHAR(tty); | |
03f0dbf7 AC |
1395 | status = edge_write(tty, port, &stop_char, 1); |
1396 | if (status <= 0) | |
1da177e4 | 1397 | return; |
1da177e4 LT |
1398 | } |
1399 | ||
1400 | /* if we are implementing RTS/CTS, toggle that line */ | |
9db276f8 | 1401 | if (C_CRTSCTS(tty)) { |
1da177e4 | 1402 | edge_port->shadowMCR &= ~MCR_RTS; |
03f0dbf7 AC |
1403 | status = send_cmd_write_uart_register(edge_port, MCR, |
1404 | edge_port->shadowMCR); | |
1405 | if (status != 0) | |
1da177e4 | 1406 | return; |
1da177e4 | 1407 | } |
1da177e4 LT |
1408 | } |
1409 | ||
1410 | ||
1411 | /***************************************************************************** | |
1412 | * edge_unthrottle | |
03f0dbf7 AC |
1413 | * this function is called by the tty driver when it wants to resume the |
1414 | * data being read from the port (called after SerialThrottle is called) | |
1da177e4 | 1415 | *****************************************************************************/ |
95da310e | 1416 | static void edge_unthrottle(struct tty_struct *tty) |
1da177e4 | 1417 | { |
95da310e | 1418 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1419 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1da177e4 LT |
1420 | int status; |
1421 | ||
1da177e4 LT |
1422 | if (edge_port == NULL) |
1423 | return; | |
1424 | ||
1425 | if (!edge_port->open) { | |
984f6868 | 1426 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1427 | return; |
1428 | } | |
1429 | ||
1da177e4 LT |
1430 | /* if we are implementing XON/XOFF, send the start character */ |
1431 | if (I_IXOFF(tty)) { | |
1432 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1433 | status = edge_write(tty, port, &start_char, 1); |
1434 | if (status <= 0) | |
1da177e4 | 1435 | return; |
1da177e4 | 1436 | } |
1da177e4 | 1437 | /* if we are implementing RTS/CTS, toggle that line */ |
9db276f8 | 1438 | if (C_CRTSCTS(tty)) { |
1da177e4 | 1439 | edge_port->shadowMCR |= MCR_RTS; |
03f0dbf7 AC |
1440 | send_cmd_write_uart_register(edge_port, MCR, |
1441 | edge_port->shadowMCR); | |
1da177e4 | 1442 | } |
1da177e4 LT |
1443 | } |
1444 | ||
1445 | ||
1446 | /***************************************************************************** | |
1447 | * SerialSetTermios | |
03f0dbf7 AC |
1448 | * this function is called by the tty driver when it wants to change |
1449 | * the termios structure | |
1da177e4 | 1450 | *****************************************************************************/ |
95da310e AC |
1451 | static void edge_set_termios(struct tty_struct *tty, |
1452 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
1453 | { |
1454 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 LT |
1455 | unsigned int cflag; |
1456 | ||
adc8d746 | 1457 | cflag = tty->termios.c_cflag; |
d9a80746 | 1458 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag); |
984f6868 | 1459 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag); |
1da177e4 LT |
1460 | |
1461 | if (edge_port == NULL) | |
1462 | return; | |
1463 | ||
1464 | if (!edge_port->open) { | |
984f6868 | 1465 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
1466 | return; |
1467 | } | |
1468 | ||
1469 | /* change the port settings to the new ones specified */ | |
95da310e | 1470 | change_port_settings(tty, edge_port, old_termios); |
1da177e4 LT |
1471 | } |
1472 | ||
1473 | ||
1474 | /***************************************************************************** | |
1475 | * get_lsr_info - get line status register info | |
1476 | * | |
1477 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1478 | * is emptied. On bus types like RS485, the transmitter must | |
1479 | * release the bus after transmitting. This must be done when | |
1480 | * the transmit shift register is empty, not be done when the | |
1481 | * transmit holding register is empty. This functionality | |
03f0dbf7 | 1482 | * allows an RS485 driver to be written in user space. |
1da177e4 | 1483 | *****************************************************************************/ |
03f0dbf7 AC |
1484 | static int get_lsr_info(struct edgeport_port *edge_port, |
1485 | unsigned int __user *value) | |
1da177e4 LT |
1486 | { |
1487 | unsigned int result = 0; | |
1488 | unsigned long flags; | |
1489 | ||
1490 | spin_lock_irqsave(&edge_port->ep_lock, flags); | |
1491 | if (edge_port->maxTxCredits == edge_port->txCredits && | |
1492 | edge_port->txfifo.count == 0) { | |
984f6868 | 1493 | dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); |
1da177e4 LT |
1494 | result = TIOCSER_TEMT; |
1495 | } | |
1496 | spin_unlock_irqrestore(&edge_port->ep_lock, flags); | |
1497 | ||
1498 | if (copy_to_user(value, &result, sizeof(int))) | |
1499 | return -EFAULT; | |
1500 | return 0; | |
1501 | } | |
1502 | ||
20b9d177 | 1503 | static int edge_tiocmset(struct tty_struct *tty, |
03f0dbf7 | 1504 | unsigned int set, unsigned int clear) |
1da177e4 | 1505 | { |
95da310e | 1506 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1507 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1508 | unsigned int mcr; | |
1509 | ||
1da177e4 LT |
1510 | mcr = edge_port->shadowMCR; |
1511 | if (set & TIOCM_RTS) | |
1512 | mcr |= MCR_RTS; | |
1513 | if (set & TIOCM_DTR) | |
1514 | mcr |= MCR_DTR; | |
1515 | if (set & TIOCM_LOOP) | |
1516 | mcr |= MCR_LOOPBACK; | |
1517 | ||
1518 | if (clear & TIOCM_RTS) | |
1519 | mcr &= ~MCR_RTS; | |
1520 | if (clear & TIOCM_DTR) | |
1521 | mcr &= ~MCR_DTR; | |
1522 | if (clear & TIOCM_LOOP) | |
1523 | mcr &= ~MCR_LOOPBACK; | |
1524 | ||
1525 | edge_port->shadowMCR = mcr; | |
1526 | ||
1527 | send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); | |
1528 | ||
1529 | return 0; | |
1530 | } | |
1531 | ||
60b33c13 | 1532 | static int edge_tiocmget(struct tty_struct *tty) |
1da177e4 | 1533 | { |
95da310e | 1534 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1535 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
1536 | unsigned int result = 0; | |
1537 | unsigned int msr; | |
1538 | unsigned int mcr; | |
1539 | ||
1da177e4 LT |
1540 | msr = edge_port->shadowMSR; |
1541 | mcr = edge_port->shadowMCR; | |
1542 | result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1543 | | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1544 | | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1545 | | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1546 | | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1547 | | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1548 | ||
1da177e4 LT |
1549 | return result; |
1550 | } | |
1551 | ||
03f0dbf7 AC |
1552 | static int get_serial_info(struct edgeport_port *edge_port, |
1553 | struct serial_struct __user *retinfo) | |
1da177e4 LT |
1554 | { |
1555 | struct serial_struct tmp; | |
1556 | ||
1557 | if (!retinfo) | |
1558 | return -EFAULT; | |
1559 | ||
1560 | memset(&tmp, 0, sizeof(tmp)); | |
1561 | ||
1562 | tmp.type = PORT_16550A; | |
e5b1e206 | 1563 | tmp.line = edge_port->port->minor; |
1143832e | 1564 | tmp.port = edge_port->port->port_number; |
1da177e4 LT |
1565 | tmp.irq = 0; |
1566 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
1567 | tmp.xmit_fifo_size = edge_port->maxTxCredits; | |
1568 | tmp.baud_base = 9600; | |
1569 | tmp.close_delay = 5*HZ; | |
1570 | tmp.closing_wait = 30*HZ; | |
1da177e4 LT |
1571 | |
1572 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1573 | return -EFAULT; | |
1574 | return 0; | |
1575 | } | |
1576 | ||
1577 | ||
1da177e4 LT |
1578 | /***************************************************************************** |
1579 | * SerialIoctl | |
1580 | * this function handles any ioctl calls to the driver | |
1581 | *****************************************************************************/ | |
00a0d0d6 | 1582 | static int edge_ioctl(struct tty_struct *tty, |
95da310e | 1583 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1584 | { |
95da310e | 1585 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1586 | DEFINE_WAIT(wait); |
1587 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); | |
1da177e4 | 1588 | |
1da177e4 | 1589 | switch (cmd) { |
03f0dbf7 | 1590 | case TIOCSERGETLSR: |
1143832e | 1591 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
03f0dbf7 AC |
1592 | return get_lsr_info(edge_port, (unsigned int __user *) arg); |
1593 | ||
1594 | case TIOCGSERIAL: | |
1143832e | 1595 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
03f0dbf7 | 1596 | return get_serial_info(edge_port, (struct serial_struct __user *) arg); |
1da177e4 | 1597 | } |
1da177e4 LT |
1598 | return -ENOIOCTLCMD; |
1599 | } | |
1600 | ||
1601 | ||
1602 | /***************************************************************************** | |
1603 | * SerialBreak | |
1604 | * this function sends a break to the port | |
1605 | *****************************************************************************/ | |
03f0dbf7 | 1606 | static void edge_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1607 | { |
95da310e | 1608 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1609 | struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
6e8cf775 | 1610 | struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
1da177e4 LT |
1611 | int status; |
1612 | ||
232dce89 GB |
1613 | if (!edge_serial->is_epic || |
1614 | edge_serial->epic_descriptor.Supports.IOSPChase) { | |
6e8cf775 | 1615 | /* flush and chase */ |
cb8eaa8b | 1616 | edge_port->chaseResponsePending = true; |
6e8cf775 | 1617 | |
984f6868 | 1618 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
03f0dbf7 | 1619 | status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
6e8cf775 | 1620 | if (status == 0) { |
03f0dbf7 | 1621 | /* block until chase finished */ |
6e8cf775 GKH |
1622 | block_until_chase_response(edge_port); |
1623 | } else { | |
cb8eaa8b | 1624 | edge_port->chaseResponsePending = false; |
6e8cf775 | 1625 | } |
1da177e4 LT |
1626 | } |
1627 | ||
232dce89 GB |
1628 | if (!edge_serial->is_epic || |
1629 | edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { | |
6e8cf775 | 1630 | if (break_state == -1) { |
984f6868 | 1631 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); |
03f0dbf7 AC |
1632 | status = send_iosp_ext_cmd(edge_port, |
1633 | IOSP_CMD_SET_BREAK, 0); | |
6e8cf775 | 1634 | } else { |
984f6868 | 1635 | dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); |
03f0dbf7 AC |
1636 | status = send_iosp_ext_cmd(edge_port, |
1637 | IOSP_CMD_CLEAR_BREAK, 0); | |
6e8cf775 | 1638 | } |
03f0dbf7 | 1639 | if (status) |
984f6868 | 1640 | dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", |
03f0dbf7 | 1641 | __func__); |
1da177e4 | 1642 | } |
1da177e4 LT |
1643 | } |
1644 | ||
1645 | ||
1646 | /***************************************************************************** | |
1647 | * process_rcvd_data | |
1648 | * this function handles the data received on the bulk in pipe. | |
1649 | *****************************************************************************/ | |
03f0dbf7 AC |
1650 | static void process_rcvd_data(struct edgeport_serial *edge_serial, |
1651 | unsigned char *buffer, __u16 bufferLength) | |
1da177e4 | 1652 | { |
984f6868 | 1653 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
1654 | struct usb_serial_port *port; |
1655 | struct edgeport_port *edge_port; | |
1da177e4 LT |
1656 | __u16 lastBufferLength; |
1657 | __u16 rxLen; | |
1658 | ||
1da177e4 LT |
1659 | lastBufferLength = bufferLength + 1; |
1660 | ||
1661 | while (bufferLength > 0) { | |
1662 | /* failsafe incase we get a message that we don't understand */ | |
1663 | if (lastBufferLength == bufferLength) { | |
984f6868 | 1664 | dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); |
1da177e4 LT |
1665 | break; |
1666 | } | |
1667 | lastBufferLength = bufferLength; | |
1668 | ||
1669 | switch (edge_serial->rxState) { | |
03f0dbf7 AC |
1670 | case EXPECT_HDR1: |
1671 | edge_serial->rxHeader1 = *buffer; | |
1672 | ++buffer; | |
1673 | --bufferLength; | |
1da177e4 | 1674 | |
03f0dbf7 AC |
1675 | if (bufferLength == 0) { |
1676 | edge_serial->rxState = EXPECT_HDR2; | |
1677 | break; | |
1678 | } | |
1679 | /* otherwise, drop on through */ | |
1680 | case EXPECT_HDR2: | |
1681 | edge_serial->rxHeader2 = *buffer; | |
1682 | ++buffer; | |
1683 | --bufferLength; | |
1684 | ||
984f6868 GKH |
1685 | dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, |
1686 | edge_serial->rxHeader1, edge_serial->rxHeader2); | |
03f0dbf7 AC |
1687 | /* Process depending on whether this header is |
1688 | * data or status */ | |
1689 | ||
1690 | if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { | |
1691 | /* Decode this status header and go to | |
1692 | * EXPECT_HDR1 (if we can process the status | |
1693 | * with only 2 bytes), or go to EXPECT_HDR3 to | |
1694 | * get the third byte. */ | |
1695 | edge_serial->rxPort = | |
1696 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1697 | edge_serial->rxStatusCode = | |
1698 | IOSP_GET_STATUS_CODE( | |
1699 | edge_serial->rxHeader1); | |
1700 | ||
1701 | if (!IOSP_STATUS_IS_2BYTE( | |
1702 | edge_serial->rxStatusCode)) { | |
1703 | /* This status needs additional bytes. | |
1704 | * Save what we have and then wait for | |
1705 | * more data. | |
1706 | */ | |
1707 | edge_serial->rxStatusParam | |
1708 | = edge_serial->rxHeader2; | |
1709 | edge_serial->rxState = EXPECT_HDR3; | |
1da177e4 LT |
1710 | break; |
1711 | } | |
03f0dbf7 AC |
1712 | /* We have all the header bytes, process the |
1713 | status now */ | |
1714 | process_rcvd_status(edge_serial, | |
1715 | edge_serial->rxHeader2, 0); | |
1716 | edge_serial->rxState = EXPECT_HDR1; | |
1717 | break; | |
1718 | } else { | |
1719 | edge_serial->rxPort = | |
1720 | IOSP_GET_HDR_PORT(edge_serial->rxHeader1); | |
1721 | edge_serial->rxBytesRemaining = | |
1722 | IOSP_GET_HDR_DATA_LEN( | |
1723 | edge_serial->rxHeader1, | |
1724 | edge_serial->rxHeader2); | |
984f6868 GKH |
1725 | dev_dbg(dev, "%s - Data for Port %u Len %u\n", |
1726 | __func__, | |
1727 | edge_serial->rxPort, | |
1728 | edge_serial->rxBytesRemaining); | |
03f0dbf7 AC |
1729 | |
1730 | /* ASSERT(DevExt->RxPort < DevExt->NumPorts); | |
1731 | * ASSERT(DevExt->RxBytesRemaining < | |
1732 | * IOSP_MAX_DATA_LENGTH); | |
1733 | */ | |
1da177e4 | 1734 | |
03f0dbf7 AC |
1735 | if (bufferLength == 0) { |
1736 | edge_serial->rxState = EXPECT_DATA; | |
1da177e4 | 1737 | break; |
1da177e4 | 1738 | } |
03f0dbf7 AC |
1739 | /* Else, drop through */ |
1740 | } | |
1741 | case EXPECT_DATA: /* Expect data */ | |
1742 | if (bufferLength < edge_serial->rxBytesRemaining) { | |
1743 | rxLen = bufferLength; | |
1744 | /* Expect data to start next buffer */ | |
1745 | edge_serial->rxState = EXPECT_DATA; | |
1746 | } else { | |
1747 | /* BufLen >= RxBytesRemaining */ | |
1748 | rxLen = edge_serial->rxBytesRemaining; | |
1749 | /* Start another header next time */ | |
1750 | edge_serial->rxState = EXPECT_HDR1; | |
1751 | } | |
1da177e4 | 1752 | |
03f0dbf7 AC |
1753 | bufferLength -= rxLen; |
1754 | edge_serial->rxBytesRemaining -= rxLen; | |
1da177e4 | 1755 | |
03f0dbf7 AC |
1756 | /* spit this data back into the tty driver if this |
1757 | port is open */ | |
1758 | if (rxLen) { | |
1759 | port = edge_serial->serial->port[ | |
1760 | edge_serial->rxPort]; | |
1761 | edge_port = usb_get_serial_port_data(port); | |
1762 | if (edge_port->open) { | |
2e124b4a JS |
1763 | dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", |
1764 | __func__, rxLen, | |
1765 | edge_serial->rxPort); | |
1766 | edge_tty_recv(edge_port->port, buffer, | |
1767 | rxLen); | |
d36a7712 | 1768 | edge_port->port->icount.rx += rxLen; |
1da177e4 | 1769 | } |
03f0dbf7 AC |
1770 | buffer += rxLen; |
1771 | } | |
1772 | break; | |
1da177e4 | 1773 | |
03f0dbf7 AC |
1774 | case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
1775 | edge_serial->rxHeader3 = *buffer; | |
1776 | ++buffer; | |
1777 | --bufferLength; | |
1778 | ||
1779 | /* We have all the header bytes, process the | |
1780 | status now */ | |
1781 | process_rcvd_status(edge_serial, | |
1782 | edge_serial->rxStatusParam, | |
1783 | edge_serial->rxHeader3); | |
1784 | edge_serial->rxState = EXPECT_HDR1; | |
1785 | break; | |
1da177e4 LT |
1786 | } |
1787 | } | |
1788 | } | |
1789 | ||
1790 | ||
1791 | /***************************************************************************** | |
1792 | * process_rcvd_status | |
03f0dbf7 AC |
1793 | * this function handles the any status messages received on the |
1794 | * bulk in pipe. | |
1da177e4 | 1795 | *****************************************************************************/ |
03f0dbf7 AC |
1796 | static void process_rcvd_status(struct edgeport_serial *edge_serial, |
1797 | __u8 byte2, __u8 byte3) | |
1da177e4 LT |
1798 | { |
1799 | struct usb_serial_port *port; | |
1800 | struct edgeport_port *edge_port; | |
4a90f09b | 1801 | struct tty_struct *tty; |
984f6868 | 1802 | struct device *dev; |
1da177e4 LT |
1803 | __u8 code = edge_serial->rxStatusCode; |
1804 | ||
1805 | /* switch the port pointer to the one being currently talked about */ | |
1806 | port = edge_serial->serial->port[edge_serial->rxPort]; | |
1807 | edge_port = usb_get_serial_port_data(port); | |
1808 | if (edge_port == NULL) { | |
03f0dbf7 AC |
1809 | dev_err(&edge_serial->serial->dev->dev, |
1810 | "%s - edge_port == NULL for port %d\n", | |
1811 | __func__, edge_serial->rxPort); | |
1da177e4 LT |
1812 | return; |
1813 | } | |
984f6868 | 1814 | dev = &port->dev; |
1da177e4 LT |
1815 | |
1816 | if (code == IOSP_EXT_STATUS) { | |
1817 | switch (byte2) { | |
03f0dbf7 AC |
1818 | case IOSP_EXT_STATUS_CHASE_RSP: |
1819 | /* we want to do EXT status regardless of port | |
1820 | * open/closed */ | |
984f6868 GKH |
1821 | dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", |
1822 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1823 | /* Currently, the only EXT_STATUS is Chase, so process |
1824 | * here instead of one more call to one more subroutine | |
1825 | * If/when more EXT_STATUS, there'll be more work to do | |
1826 | * Also, we currently clear flag and close the port | |
1827 | * regardless of content of above's Byte3. | |
1828 | * We could choose to do something else when Byte3 says | |
1829 | * Timeout on Chase from Edgeport, like wait longer in | |
1830 | * block_until_chase_response, but for now we don't. | |
1831 | */ | |
1832 | edge_port->chaseResponsePending = false; | |
1833 | wake_up(&edge_port->wait_chase); | |
1834 | return; | |
1da177e4 | 1835 | |
03f0dbf7 | 1836 | case IOSP_EXT_STATUS_RX_CHECK_RSP: |
984f6868 GKH |
1837 | dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", |
1838 | __func__, edge_serial->rxPort, byte3); | |
03f0dbf7 AC |
1839 | /* Port->RxCheckRsp = true; */ |
1840 | return; | |
1da177e4 LT |
1841 | } |
1842 | } | |
1843 | ||
1844 | if (code == IOSP_STATUS_OPEN_RSP) { | |
1845 | edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); | |
1846 | edge_port->maxTxCredits = edge_port->txCredits; | |
984f6868 GKH |
1847 | dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", |
1848 | __func__, edge_serial->rxPort, byte2, edge_port->txCredits); | |
03f0dbf7 | 1849 | handle_new_msr(edge_port, byte2); |
1da177e4 | 1850 | |
03f0dbf7 AC |
1851 | /* send the current line settings to the port so we are |
1852 | in sync with any further termios calls */ | |
4a90f09b AC |
1853 | tty = tty_port_tty_get(&edge_port->port->port); |
1854 | if (tty) { | |
1855 | change_port_settings(tty, | |
adc8d746 | 1856 | edge_port, &tty->termios); |
4a90f09b AC |
1857 | tty_kref_put(tty); |
1858 | } | |
1da177e4 LT |
1859 | |
1860 | /* we have completed the open */ | |
cb8eaa8b RK |
1861 | edge_port->openPending = false; |
1862 | edge_port->open = true; | |
1da177e4 LT |
1863 | wake_up(&edge_port->wait_open); |
1864 | return; | |
1865 | } | |
1866 | ||
03f0dbf7 AC |
1867 | /* If port is closed, silently discard all rcvd status. We can |
1868 | * have cases where buffered status is received AFTER the close | |
1869 | * port command is sent to the Edgeport. | |
1870 | */ | |
1871 | if (!edge_port->open || edge_port->closePending) | |
1da177e4 | 1872 | return; |
1da177e4 LT |
1873 | |
1874 | switch (code) { | |
03f0dbf7 AC |
1875 | /* Not currently sent by Edgeport */ |
1876 | case IOSP_STATUS_LSR: | |
984f6868 GKH |
1877 | dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", |
1878 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1879 | handle_new_lsr(edge_port, false, byte2, 0); |
1880 | break; | |
1da177e4 | 1881 | |
03f0dbf7 | 1882 | case IOSP_STATUS_LSR_DATA: |
984f6868 GKH |
1883 | dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", |
1884 | __func__, edge_serial->rxPort, byte2, byte3); | |
03f0dbf7 AC |
1885 | /* byte2 is LSR Register */ |
1886 | /* byte3 is broken data byte */ | |
1887 | handle_new_lsr(edge_port, true, byte2, byte3); | |
1888 | break; | |
1889 | /* | |
1890 | * case IOSP_EXT_4_STATUS: | |
984f6868 | 1891 | * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", |
03f0dbf7 AC |
1892 | * __func__, edge_serial->rxPort, byte2, byte3); |
1893 | * break; | |
1894 | */ | |
1895 | case IOSP_STATUS_MSR: | |
984f6868 GKH |
1896 | dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", |
1897 | __func__, edge_serial->rxPort, byte2); | |
03f0dbf7 AC |
1898 | /* |
1899 | * Process this new modem status and generate appropriate | |
1900 | * events, etc, based on the new status. This routine | |
1901 | * also saves the MSR in Port->ShadowMsr. | |
1902 | */ | |
1903 | handle_new_msr(edge_port, byte2); | |
1904 | break; | |
1da177e4 | 1905 | |
03f0dbf7 | 1906 | default: |
984f6868 | 1907 | dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); |
03f0dbf7 | 1908 | break; |
1da177e4 | 1909 | } |
1da177e4 LT |
1910 | } |
1911 | ||
1912 | ||
1913 | /***************************************************************************** | |
1914 | * edge_tty_recv | |
1915 | * this function passes data on to the tty flip buffer | |
1916 | *****************************************************************************/ | |
2e124b4a JS |
1917 | static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
1918 | int length) | |
1da177e4 LT |
1919 | { |
1920 | int cnt; | |
1921 | ||
05c7cd39 | 1922 | cnt = tty_insert_flip_string(&port->port, data, length); |
a108bfcb | 1923 | if (cnt < length) { |
05c7cd39 | 1924 | dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", |
a108bfcb AC |
1925 | __func__, length - cnt); |
1926 | } | |
1927 | data += cnt; | |
1928 | length -= cnt; | |
1da177e4 | 1929 | |
2e124b4a | 1930 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
1931 | } |
1932 | ||
1933 | ||
1934 | /***************************************************************************** | |
1935 | * handle_new_msr | |
1936 | * this function handles any change to the msr register for a port. | |
1937 | *****************************************************************************/ | |
1938 | static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) | |
1939 | { | |
1940 | struct async_icount *icount; | |
1941 | ||
03f0dbf7 AC |
1942 | if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
1943 | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { | |
d36a7712 | 1944 | icount = &edge_port->port->icount; |
1da177e4 LT |
1945 | |
1946 | /* update input line counters */ | |
03f0dbf7 | 1947 | if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
1da177e4 | 1948 | icount->cts++; |
03f0dbf7 | 1949 | if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
1da177e4 | 1950 | icount->dsr++; |
03f0dbf7 | 1951 | if (newMsr & EDGEPORT_MSR_DELTA_CD) |
1da177e4 | 1952 | icount->dcd++; |
03f0dbf7 | 1953 | if (newMsr & EDGEPORT_MSR_DELTA_RI) |
1da177e4 | 1954 | icount->rng++; |
8b8070d8 | 1955 | wake_up_interruptible(&edge_port->port->port.delta_msr_wait); |
1da177e4 LT |
1956 | } |
1957 | ||
1958 | /* Save the new modem status */ | |
1959 | edge_port->shadowMSR = newMsr & 0xf0; | |
1da177e4 LT |
1960 | } |
1961 | ||
1962 | ||
1963 | /***************************************************************************** | |
1964 | * handle_new_lsr | |
1965 | * this function handles any change to the lsr register for a port. | |
1966 | *****************************************************************************/ | |
03f0dbf7 AC |
1967 | static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
1968 | __u8 lsr, __u8 data) | |
1da177e4 | 1969 | { |
03f0dbf7 AC |
1970 | __u8 newLsr = (__u8) (lsr & (__u8) |
1971 | (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); | |
1972 | struct async_icount *icount; | |
1da177e4 | 1973 | |
1da177e4 LT |
1974 | edge_port->shadowLSR = lsr; |
1975 | ||
1976 | if (newLsr & LSR_BREAK) { | |
03f0dbf7 AC |
1977 | /* |
1978 | * Parity and Framing errors only count if they | |
1979 | * occur exclusive of a break being | |
1980 | * received. | |
1981 | */ | |
1da177e4 LT |
1982 | newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
1983 | } | |
1984 | ||
1985 | /* Place LSR data byte into Rx buffer */ | |
2e124b4a JS |
1986 | if (lsrData) |
1987 | edge_tty_recv(edge_port->port, &data, 1); | |
1988 | ||
1da177e4 | 1989 | /* update input line counters */ |
d36a7712 | 1990 | icount = &edge_port->port->icount; |
03f0dbf7 | 1991 | if (newLsr & LSR_BREAK) |
1da177e4 | 1992 | icount->brk++; |
03f0dbf7 | 1993 | if (newLsr & LSR_OVER_ERR) |
1da177e4 | 1994 | icount->overrun++; |
03f0dbf7 | 1995 | if (newLsr & LSR_PAR_ERR) |
1da177e4 | 1996 | icount->parity++; |
03f0dbf7 | 1997 | if (newLsr & LSR_FRM_ERR) |
1da177e4 | 1998 | icount->frame++; |
1da177e4 LT |
1999 | } |
2000 | ||
2001 | ||
2002 | /**************************************************************************** | |
2003 | * sram_write | |
03f0dbf7 | 2004 | * writes a number of bytes to the Edgeport device's sram starting at the |
1da177e4 LT |
2005 | * given address. |
2006 | * If successful returns the number of bytes written, otherwise it returns | |
2007 | * a negative error number of the problem. | |
2008 | ****************************************************************************/ | |
03f0dbf7 AC |
2009 | static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2010 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2011 | { |
2012 | int result; | |
2013 | __u16 current_length; | |
2014 | unsigned char *transfer_buffer; | |
2015 | ||
984f6868 | 2016 | dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); |
1da177e4 | 2017 | |
03f0dbf7 | 2018 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
10c642d0 | 2019 | if (!transfer_buffer) |
1da177e4 | 2020 | return -ENOMEM; |
1da177e4 LT |
2021 | |
2022 | /* need to split these writes up into 64 byte chunks */ | |
2023 | result = 0; | |
2024 | while (length > 0) { | |
03f0dbf7 | 2025 | if (length > 64) |
1da177e4 | 2026 | current_length = 64; |
03f0dbf7 | 2027 | else |
1da177e4 | 2028 | current_length = length; |
03f0dbf7 | 2029 | |
984f6868 | 2030 | /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ |
03f0dbf7 AC |
2031 | memcpy(transfer_buffer, data, current_length); |
2032 | result = usb_control_msg(serial->dev, | |
2033 | usb_sndctrlpipe(serial->dev, 0), | |
2034 | USB_REQUEST_ION_WRITE_RAM, | |
2035 | 0x40, addr, extAddr, transfer_buffer, | |
2036 | current_length, 300); | |
1da177e4 LT |
2037 | if (result < 0) |
2038 | break; | |
2039 | length -= current_length; | |
2040 | addr += current_length; | |
2041 | data += current_length; | |
03f0dbf7 | 2042 | } |
1da177e4 | 2043 | |
03f0dbf7 | 2044 | kfree(transfer_buffer); |
1da177e4 LT |
2045 | return result; |
2046 | } | |
2047 | ||
2048 | ||
2049 | /**************************************************************************** | |
2050 | * rom_write | |
2051 | * writes a number of bytes to the Edgeport device's ROM starting at the | |
2052 | * given address. | |
2053 | * If successful returns the number of bytes written, otherwise it returns | |
2054 | * a negative error number of the problem. | |
2055 | ****************************************************************************/ | |
03f0dbf7 AC |
2056 | static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
2057 | __u16 length, const __u8 *data) | |
1da177e4 LT |
2058 | { |
2059 | int result; | |
2060 | __u16 current_length; | |
2061 | unsigned char *transfer_buffer; | |
2062 | ||
03f0dbf7 | 2063 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
10c642d0 | 2064 | if (!transfer_buffer) |
1da177e4 | 2065 | return -ENOMEM; |
1da177e4 LT |
2066 | |
2067 | /* need to split these writes up into 64 byte chunks */ | |
2068 | result = 0; | |
2069 | while (length > 0) { | |
03f0dbf7 | 2070 | if (length > 64) |
1da177e4 | 2071 | current_length = 64; |
03f0dbf7 | 2072 | else |
1da177e4 | 2073 | current_length = length; |
03f0dbf7 AC |
2074 | memcpy(transfer_buffer, data, current_length); |
2075 | result = usb_control_msg(serial->dev, | |
2076 | usb_sndctrlpipe(serial->dev, 0), | |
2077 | USB_REQUEST_ION_WRITE_ROM, 0x40, | |
2078 | addr, extAddr, | |
2079 | transfer_buffer, current_length, 300); | |
1da177e4 LT |
2080 | if (result < 0) |
2081 | break; | |
2082 | length -= current_length; | |
2083 | addr += current_length; | |
2084 | data += current_length; | |
03f0dbf7 | 2085 | } |
1da177e4 | 2086 | |
03f0dbf7 | 2087 | kfree(transfer_buffer); |
1da177e4 LT |
2088 | return result; |
2089 | } | |
2090 | ||
2091 | ||
2092 | /**************************************************************************** | |
2093 | * rom_read | |
2094 | * reads a number of bytes from the Edgeport device starting at the given | |
2095 | * address. | |
2096 | * If successful returns the number of bytes read, otherwise it returns | |
2097 | * a negative error number of the problem. | |
2098 | ****************************************************************************/ | |
03f0dbf7 AC |
2099 | static int rom_read(struct usb_serial *serial, __u16 extAddr, |
2100 | __u16 addr, __u16 length, __u8 *data) | |
1da177e4 LT |
2101 | { |
2102 | int result; | |
2103 | __u16 current_length; | |
2104 | unsigned char *transfer_buffer; | |
2105 | ||
03f0dbf7 | 2106 | transfer_buffer = kmalloc(64, GFP_KERNEL); |
10c642d0 | 2107 | if (!transfer_buffer) |
1da177e4 | 2108 | return -ENOMEM; |
1da177e4 LT |
2109 | |
2110 | /* need to split these reads up into 64 byte chunks */ | |
2111 | result = 0; | |
2112 | while (length > 0) { | |
03f0dbf7 | 2113 | if (length > 64) |
1da177e4 | 2114 | current_length = 64; |
03f0dbf7 | 2115 | else |
1da177e4 | 2116 | current_length = length; |
03f0dbf7 AC |
2117 | result = usb_control_msg(serial->dev, |
2118 | usb_rcvctrlpipe(serial->dev, 0), | |
2119 | USB_REQUEST_ION_READ_ROM, | |
2120 | 0xC0, addr, extAddr, transfer_buffer, | |
2121 | current_length, 300); | |
1da177e4 LT |
2122 | if (result < 0) |
2123 | break; | |
03f0dbf7 | 2124 | memcpy(data, transfer_buffer, current_length); |
1da177e4 LT |
2125 | length -= current_length; |
2126 | addr += current_length; | |
2127 | data += current_length; | |
03f0dbf7 | 2128 | } |
1da177e4 | 2129 | |
03f0dbf7 | 2130 | kfree(transfer_buffer); |
1da177e4 LT |
2131 | return result; |
2132 | } | |
2133 | ||
2134 | ||
2135 | /**************************************************************************** | |
2136 | * send_iosp_ext_cmd | |
2137 | * Is used to send a IOSP message to the Edgeport device | |
2138 | ****************************************************************************/ | |
03f0dbf7 AC |
2139 | static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
2140 | __u8 command, __u8 param) | |
1da177e4 LT |
2141 | { |
2142 | unsigned char *buffer; | |
2143 | unsigned char *currentCommand; | |
2144 | int length = 0; | |
2145 | int status = 0; | |
2146 | ||
03f0dbf7 | 2147 | buffer = kmalloc(10, GFP_ATOMIC); |
10c642d0 | 2148 | if (!buffer) |
1da177e4 | 2149 | return -ENOMEM; |
1da177e4 LT |
2150 | |
2151 | currentCommand = buffer; | |
2152 | ||
1143832e GKH |
2153 | MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, |
2154 | command, param); | |
1da177e4 | 2155 | |
03f0dbf7 | 2156 | status = write_cmd_usb(edge_port, buffer, length); |
1da177e4 LT |
2157 | if (status) { |
2158 | /* something bad happened, let's free up the memory */ | |
2159 | kfree(buffer); | |
2160 | } | |
2161 | ||
2162 | return status; | |
2163 | } | |
2164 | ||
2165 | ||
2166 | /***************************************************************************** | |
2167 | * write_cmd_usb | |
2168 | * this function writes the given buffer out to the bulk write endpoint. | |
2169 | *****************************************************************************/ | |
03f0dbf7 AC |
2170 | static int write_cmd_usb(struct edgeport_port *edge_port, |
2171 | unsigned char *buffer, int length) | |
1da177e4 | 2172 | { |
03f0dbf7 AC |
2173 | struct edgeport_serial *edge_serial = |
2174 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2175 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2176 | int status = 0; |
2177 | struct urb *urb; | |
1da177e4 | 2178 | |
59d33f2f | 2179 | usb_serial_debug_data(dev, __func__, length, buffer); |
1da177e4 LT |
2180 | |
2181 | /* Allocate our next urb */ | |
03f0dbf7 | 2182 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
2183 | if (!urb) |
2184 | return -ENOMEM; | |
2185 | ||
96c706ed | 2186 | atomic_inc(&CmdUrbs); |
984f6868 GKH |
2187 | dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", |
2188 | __func__, urb, atomic_read(&CmdUrbs)); | |
1da177e4 | 2189 | |
03f0dbf7 AC |
2190 | usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
2191 | usb_sndbulkpipe(edge_serial->serial->dev, | |
2192 | edge_serial->bulk_out_endpoint), | |
2193 | buffer, length, edge_bulk_out_cmd_callback, edge_port); | |
1da177e4 | 2194 | |
cb8eaa8b | 2195 | edge_port->commandPending = true; |
1da177e4 LT |
2196 | status = usb_submit_urb(urb, GFP_ATOMIC); |
2197 | ||
2198 | if (status) { | |
2199 | /* something went wrong */ | |
984f6868 GKH |
2200 | dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", |
2201 | __func__, status); | |
1da177e4 LT |
2202 | usb_kill_urb(urb); |
2203 | usb_free_urb(urb); | |
96c706ed | 2204 | atomic_dec(&CmdUrbs); |
1da177e4 LT |
2205 | return status; |
2206 | } | |
2207 | ||
1da177e4 | 2208 | #if 0 |
03f0dbf7 | 2209 | wait_event(&edge_port->wait_command, !edge_port->commandPending); |
1da177e4 | 2210 | |
cb8eaa8b | 2211 | if (edge_port->commandPending) { |
1da177e4 | 2212 | /* command timed out */ |
984f6868 | 2213 | dev_dbg(dev, "%s - command timed out\n", __func__); |
1da177e4 LT |
2214 | status = -EINVAL; |
2215 | } | |
2216 | #endif | |
2217 | return status; | |
2218 | } | |
2219 | ||
2220 | ||
2221 | /***************************************************************************** | |
2222 | * send_cmd_write_baud_rate | |
2223 | * this function sends the proper command to change the baud rate of the | |
2224 | * specified port. | |
2225 | *****************************************************************************/ | |
03f0dbf7 AC |
2226 | static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
2227 | int baudRate) | |
1da177e4 | 2228 | { |
03f0dbf7 AC |
2229 | struct edgeport_serial *edge_serial = |
2230 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2231 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2232 | unsigned char *cmdBuffer; |
2233 | unsigned char *currCmd; | |
2234 | int cmdLen = 0; | |
2235 | int divisor; | |
2236 | int status; | |
1143832e | 2237 | u32 number = edge_port->port->port_number; |
1da177e4 | 2238 | |
bc71e479 AK |
2239 | if (edge_serial->is_epic && |
2240 | !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { | |
1143832e GKH |
2241 | dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", |
2242 | baudRate); | |
6e8cf775 GKH |
2243 | return 0; |
2244 | } | |
2245 | ||
1143832e | 2246 | dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); |
1da177e4 | 2247 | |
984f6868 | 2248 | status = calc_baud_rate_divisor(dev, baudRate, &divisor); |
1da177e4 | 2249 | if (status) { |
984f6868 | 2250 | dev_err(dev, "%s - bad baud rate\n", __func__); |
1da177e4 LT |
2251 | return status; |
2252 | } | |
2253 | ||
03f0dbf7 AC |
2254 | /* Alloc memory for the string of commands. */ |
2255 | cmdBuffer = kmalloc(0x100, GFP_ATOMIC); | |
10c642d0 | 2256 | if (!cmdBuffer) |
1da177e4 | 2257 | return -ENOMEM; |
10c642d0 | 2258 | |
1da177e4 LT |
2259 | currCmd = cmdBuffer; |
2260 | ||
03f0dbf7 AC |
2261 | /* Enable access to divisor latch */ |
2262 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); | |
1da177e4 | 2263 | |
03f0dbf7 AC |
2264 | /* Write the divisor itself */ |
2265 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); | |
2266 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); | |
1da177e4 | 2267 | |
03f0dbf7 AC |
2268 | /* Restore original value to disable access to divisor latch */ |
2269 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, | |
2270 | edge_port->shadowLCR); | |
1da177e4 | 2271 | |
03f0dbf7 | 2272 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
1da177e4 LT |
2273 | if (status) { |
2274 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2275 | kfree(cmdBuffer); |
1da177e4 LT |
2276 | } |
2277 | ||
2278 | return status; | |
2279 | } | |
2280 | ||
2281 | ||
2282 | /***************************************************************************** | |
2283 | * calc_baud_rate_divisor | |
2284 | * this function calculates the proper baud rate divisor for the specified | |
2285 | * baud rate. | |
2286 | *****************************************************************************/ | |
984f6868 | 2287 | static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) |
1da177e4 LT |
2288 | { |
2289 | int i; | |
2290 | __u16 custom; | |
2291 | ||
52950ed4 | 2292 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
03f0dbf7 | 2293 | if (divisor_table[i].BaudRate == baudrate) { |
1da177e4 LT |
2294 | *divisor = divisor_table[i].Divisor; |
2295 | return 0; | |
2296 | } | |
2297 | } | |
2298 | ||
03f0dbf7 AC |
2299 | /* We have tried all of the standard baud rates |
2300 | * lets try to calculate the divisor for this baud rate | |
2301 | * Make sure the baud rate is reasonable */ | |
1da177e4 | 2302 | if (baudrate > 50 && baudrate < 230400) { |
03f0dbf7 | 2303 | /* get divisor */ |
1da177e4 LT |
2304 | custom = (__u16)((230400L + baudrate/2) / baudrate); |
2305 | ||
2306 | *divisor = custom; | |
2307 | ||
984f6868 | 2308 | dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); |
1da177e4 LT |
2309 | return 0; |
2310 | } | |
2311 | ||
2312 | return -1; | |
2313 | } | |
2314 | ||
2315 | ||
2316 | /***************************************************************************** | |
2317 | * send_cmd_write_uart_register | |
fd589a8f | 2318 | * this function builds up a uart register message and sends to the device. |
1da177e4 | 2319 | *****************************************************************************/ |
03f0dbf7 AC |
2320 | static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
2321 | __u8 regNum, __u8 regValue) | |
1da177e4 | 2322 | { |
03f0dbf7 AC |
2323 | struct edgeport_serial *edge_serial = |
2324 | usb_get_serial_data(edge_port->port->serial); | |
984f6868 | 2325 | struct device *dev = &edge_port->port->dev; |
1da177e4 LT |
2326 | unsigned char *cmdBuffer; |
2327 | unsigned char *currCmd; | |
2328 | unsigned long cmdLen = 0; | |
2329 | int status; | |
2330 | ||
984f6868 GKH |
2331 | dev_dbg(dev, "%s - write to %s register 0x%02x\n", |
2332 | (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); | |
1da177e4 | 2333 | |
bc71e479 AK |
2334 | if (edge_serial->is_epic && |
2335 | !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && | |
2336 | regNum == MCR) { | |
984f6868 | 2337 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); |
6e8cf775 GKH |
2338 | return 0; |
2339 | } | |
2340 | ||
bc71e479 AK |
2341 | if (edge_serial->is_epic && |
2342 | !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && | |
2343 | regNum == LCR) { | |
984f6868 | 2344 | dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); |
6e8cf775 GKH |
2345 | return 0; |
2346 | } | |
2347 | ||
03f0dbf7 AC |
2348 | /* Alloc memory for the string of commands. */ |
2349 | cmdBuffer = kmalloc(0x10, GFP_ATOMIC); | |
2350 | if (cmdBuffer == NULL) | |
1da177e4 | 2351 | return -ENOMEM; |
1da177e4 LT |
2352 | |
2353 | currCmd = cmdBuffer; | |
2354 | ||
03f0dbf7 | 2355 | /* Build a cmd in the buffer to write the given register */ |
1143832e GKH |
2356 | MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, |
2357 | regNum, regValue); | |
1da177e4 LT |
2358 | |
2359 | status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); | |
2360 | if (status) { | |
2361 | /* something bad happened, let's free up the memory */ | |
03f0dbf7 | 2362 | kfree(cmdBuffer); |
1da177e4 LT |
2363 | } |
2364 | ||
2365 | return status; | |
2366 | } | |
2367 | ||
2368 | ||
2369 | /***************************************************************************** | |
2370 | * change_port_settings | |
03f0dbf7 AC |
2371 | * This routine is called to set the UART on the device to match the |
2372 | * specified new settings. | |
1da177e4 | 2373 | *****************************************************************************/ |
95da310e AC |
2374 | |
2375 | static void change_port_settings(struct tty_struct *tty, | |
2376 | struct edgeport_port *edge_port, struct ktermios *old_termios) | |
1da177e4 | 2377 | { |
984f6868 | 2378 | struct device *dev = &edge_port->port->dev; |
03f0dbf7 AC |
2379 | struct edgeport_serial *edge_serial = |
2380 | usb_get_serial_data(edge_port->port->serial); | |
1da177e4 LT |
2381 | int baud; |
2382 | unsigned cflag; | |
2383 | __u8 mask = 0xff; | |
2384 | __u8 lData; | |
2385 | __u8 lParity; | |
2386 | __u8 lStop; | |
2387 | __u8 rxFlow; | |
2388 | __u8 txFlow; | |
2389 | int status; | |
2390 | ||
cb8eaa8b RK |
2391 | if (!edge_port->open && |
2392 | !edge_port->openPending) { | |
984f6868 | 2393 | dev_dbg(dev, "%s - port not opened\n", __func__); |
1da177e4 LT |
2394 | return; |
2395 | } | |
2396 | ||
adc8d746 | 2397 | cflag = tty->termios.c_cflag; |
1da177e4 LT |
2398 | |
2399 | switch (cflag & CSIZE) { | |
03f0dbf7 AC |
2400 | case CS5: |
2401 | lData = LCR_BITS_5; mask = 0x1f; | |
984f6868 | 2402 | dev_dbg(dev, "%s - data bits = 5\n", __func__); |
03f0dbf7 AC |
2403 | break; |
2404 | case CS6: | |
2405 | lData = LCR_BITS_6; mask = 0x3f; | |
984f6868 | 2406 | dev_dbg(dev, "%s - data bits = 6\n", __func__); |
03f0dbf7 AC |
2407 | break; |
2408 | case CS7: | |
2409 | lData = LCR_BITS_7; mask = 0x7f; | |
984f6868 | 2410 | dev_dbg(dev, "%s - data bits = 7\n", __func__); |
03f0dbf7 AC |
2411 | break; |
2412 | default: | |
2413 | case CS8: | |
2414 | lData = LCR_BITS_8; | |
984f6868 | 2415 | dev_dbg(dev, "%s - data bits = 8\n", __func__); |
03f0dbf7 | 2416 | break; |
1da177e4 LT |
2417 | } |
2418 | ||
2419 | lParity = LCR_PAR_NONE; | |
2420 | if (cflag & PARENB) { | |
2421 | if (cflag & CMSPAR) { | |
2422 | if (cflag & PARODD) { | |
2423 | lParity = LCR_PAR_MARK; | |
984f6868 | 2424 | dev_dbg(dev, "%s - parity = mark\n", __func__); |
1da177e4 LT |
2425 | } else { |
2426 | lParity = LCR_PAR_SPACE; | |
984f6868 | 2427 | dev_dbg(dev, "%s - parity = space\n", __func__); |
1da177e4 LT |
2428 | } |
2429 | } else if (cflag & PARODD) { | |
2430 | lParity = LCR_PAR_ODD; | |
984f6868 | 2431 | dev_dbg(dev, "%s - parity = odd\n", __func__); |
1da177e4 LT |
2432 | } else { |
2433 | lParity = LCR_PAR_EVEN; | |
984f6868 | 2434 | dev_dbg(dev, "%s - parity = even\n", __func__); |
1da177e4 LT |
2435 | } |
2436 | } else { | |
984f6868 | 2437 | dev_dbg(dev, "%s - parity = none\n", __func__); |
1da177e4 LT |
2438 | } |
2439 | ||
2440 | if (cflag & CSTOPB) { | |
2441 | lStop = LCR_STOP_2; | |
984f6868 | 2442 | dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
1da177e4 LT |
2443 | } else { |
2444 | lStop = LCR_STOP_1; | |
984f6868 | 2445 | dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
1da177e4 LT |
2446 | } |
2447 | ||
2448 | /* figure out the flow control settings */ | |
2449 | rxFlow = txFlow = 0x00; | |
2450 | if (cflag & CRTSCTS) { | |
2451 | rxFlow |= IOSP_RX_FLOW_RTS; | |
2452 | txFlow |= IOSP_TX_FLOW_CTS; | |
984f6868 | 2453 | dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); |
1da177e4 | 2454 | } else { |
984f6868 | 2455 | dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); |
1da177e4 LT |
2456 | } |
2457 | ||
03f0dbf7 AC |
2458 | /* if we are implementing XON/XOFF, set the start and stop character |
2459 | in the device */ | |
1da177e4 LT |
2460 | if (I_IXOFF(tty) || I_IXON(tty)) { |
2461 | unsigned char stop_char = STOP_CHAR(tty); | |
2462 | unsigned char start_char = START_CHAR(tty); | |
2463 | ||
232dce89 GB |
2464 | if (!edge_serial->is_epic || |
2465 | edge_serial->epic_descriptor.Supports.IOSPSetXChar) { | |
03f0dbf7 AC |
2466 | send_iosp_ext_cmd(edge_port, |
2467 | IOSP_CMD_SET_XON_CHAR, start_char); | |
2468 | send_iosp_ext_cmd(edge_port, | |
2469 | IOSP_CMD_SET_XOFF_CHAR, stop_char); | |
6e8cf775 | 2470 | } |
1da177e4 LT |
2471 | |
2472 | /* if we are implementing INBOUND XON/XOFF */ | |
2473 | if (I_IXOFF(tty)) { | |
2474 | rxFlow |= IOSP_RX_FLOW_XON_XOFF; | |
984f6868 GKH |
2475 | dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2476 | __func__, start_char, stop_char); | |
1da177e4 | 2477 | } else { |
984f6868 | 2478 | dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2479 | } |
2480 | ||
2481 | /* if we are implementing OUTBOUND XON/XOFF */ | |
2482 | if (I_IXON(tty)) { | |
2483 | txFlow |= IOSP_TX_FLOW_XON_XOFF; | |
984f6868 GKH |
2484 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
2485 | __func__, start_char, stop_char); | |
1da177e4 | 2486 | } else { |
984f6868 | 2487 | dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); |
1da177e4 LT |
2488 | } |
2489 | } | |
2490 | ||
2491 | /* Set flow control to the configured value */ | |
232dce89 GB |
2492 | if (!edge_serial->is_epic || |
2493 | edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) | |
6e8cf775 | 2494 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); |
232dce89 GB |
2495 | if (!edge_serial->is_epic || |
2496 | edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) | |
6e8cf775 | 2497 | send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); |
1da177e4 LT |
2498 | |
2499 | ||
2500 | edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2501 | edge_port->shadowLCR |= (lData | lParity | lStop); | |
2502 | ||
2503 | edge_port->validDataMask = mask; | |
2504 | ||
2505 | /* Send the updated LCR value to the EdgePort */ | |
03f0dbf7 AC |
2506 | status = send_cmd_write_uart_register(edge_port, LCR, |
2507 | edge_port->shadowLCR); | |
2508 | if (status != 0) | |
1da177e4 | 2509 | return; |
1da177e4 LT |
2510 | |
2511 | /* set up the MCR register and send it to the EdgePort */ | |
2512 | edge_port->shadowMCR = MCR_MASTER_IE; | |
03f0dbf7 | 2513 | if (cflag & CBAUD) |
1da177e4 | 2514 | edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
03f0dbf7 AC |
2515 | |
2516 | status = send_cmd_write_uart_register(edge_port, MCR, | |
2517 | edge_port->shadowMCR); | |
2518 | if (status != 0) | |
1da177e4 | 2519 | return; |
1da177e4 LT |
2520 | |
2521 | /* Determine divisor based on baud rate */ | |
2522 | baud = tty_get_baud_rate(tty); | |
2523 | if (!baud) { | |
2524 | /* pick a default, any default... */ | |
2525 | baud = 9600; | |
2526 | } | |
2527 | ||
984f6868 | 2528 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
03f0dbf7 | 2529 | status = send_cmd_write_baud_rate(edge_port, baud); |
6ce073bd AC |
2530 | if (status == -1) { |
2531 | /* Speed change was not possible - put back the old speed */ | |
2532 | baud = tty_termios_baud_rate(old_termios); | |
2533 | tty_encode_baud_rate(tty, baud, baud); | |
2534 | } | |
1da177e4 LT |
2535 | } |
2536 | ||
2537 | ||
2538 | /**************************************************************************** | |
2539 | * unicode_to_ascii | |
2540 | * Turns a string from Unicode into ASCII. | |
2541 | * Doesn't do a good job with any characters that are outside the normal | |
2542 | * ASCII range, but it's only for debugging... | |
2543 | * NOTE: expects the unicode in LE format | |
2544 | ****************************************************************************/ | |
03f0dbf7 AC |
2545 | static void unicode_to_ascii(char *string, int buflen, |
2546 | __le16 *unicode, int unicode_size) | |
1da177e4 LT |
2547 | { |
2548 | int i; | |
2549 | ||
ad93375a | 2550 | if (buflen <= 0) /* never happens, but... */ |
1da177e4 | 2551 | return; |
ad93375a | 2552 | --buflen; /* space for nul */ |
1da177e4 | 2553 | |
ad93375a PZ |
2554 | for (i = 0; i < unicode_size; i++) { |
2555 | if (i >= buflen) | |
2556 | break; | |
1da177e4 | 2557 | string[i] = (char)(le16_to_cpu(unicode[i])); |
ad93375a PZ |
2558 | } |
2559 | string[i] = 0x00; | |
1da177e4 LT |
2560 | } |
2561 | ||
2562 | ||
2563 | /**************************************************************************** | |
2564 | * get_manufacturing_desc | |
03f0dbf7 | 2565 | * reads in the manufacturing descriptor and stores it into the serial |
1da177e4 LT |
2566 | * structure. |
2567 | ****************************************************************************/ | |
03f0dbf7 | 2568 | static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2569 | { |
984f6868 | 2570 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2571 | int response; |
2572 | ||
984f6868 | 2573 | dev_dbg(dev, "getting manufacturer descriptor\n"); |
1da177e4 | 2574 | |
03f0dbf7 AC |
2575 | response = rom_read(edge_serial->serial, |
2576 | (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, | |
2577 | (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), | |
2578 | EDGE_MANUF_DESC_LEN, | |
2579 | (__u8 *)(&edge_serial->manuf_descriptor)); | |
1da177e4 | 2580 | |
03f0dbf7 | 2581 | if (response < 1) |
984f6868 | 2582 | dev_err(dev, "error in getting manufacturer descriptor\n"); |
03f0dbf7 | 2583 | else { |
1da177e4 | 2584 | char string[30]; |
984f6868 GKH |
2585 | dev_dbg(dev, "**Manufacturer Descriptor\n"); |
2586 | dev_dbg(dev, " RomSize: %dK\n", | |
03f0dbf7 | 2587 | edge_serial->manuf_descriptor.RomSize); |
984f6868 | 2588 | dev_dbg(dev, " RamSize: %dK\n", |
03f0dbf7 | 2589 | edge_serial->manuf_descriptor.RamSize); |
984f6868 | 2590 | dev_dbg(dev, " CpuRev: %d\n", |
03f0dbf7 | 2591 | edge_serial->manuf_descriptor.CpuRev); |
984f6868 | 2592 | dev_dbg(dev, " BoardRev: %d\n", |
03f0dbf7 | 2593 | edge_serial->manuf_descriptor.BoardRev); |
984f6868 | 2594 | dev_dbg(dev, " NumPorts: %d\n", |
03f0dbf7 | 2595 | edge_serial->manuf_descriptor.NumPorts); |
984f6868 | 2596 | dev_dbg(dev, " DescDate: %d/%d/%d\n", |
03f0dbf7 AC |
2597 | edge_serial->manuf_descriptor.DescDate[0], |
2598 | edge_serial->manuf_descriptor.DescDate[1], | |
2599 | edge_serial->manuf_descriptor.DescDate[2]+1900); | |
4bc203d9 | 2600 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2601 | edge_serial->manuf_descriptor.SerialNumber, |
2602 | edge_serial->manuf_descriptor.SerNumLength/2); | |
984f6868 | 2603 | dev_dbg(dev, " SerialNumber: %s\n", string); |
4bc203d9 | 2604 | unicode_to_ascii(string, sizeof(string), |
03f0dbf7 AC |
2605 | edge_serial->manuf_descriptor.AssemblyNumber, |
2606 | edge_serial->manuf_descriptor.AssemblyNumLength/2); | |
984f6868 | 2607 | dev_dbg(dev, " AssemblyNumber: %s\n", string); |
4bc203d9 | 2608 | unicode_to_ascii(string, sizeof(string), |
ad93375a PZ |
2609 | edge_serial->manuf_descriptor.OemAssyNumber, |
2610 | edge_serial->manuf_descriptor.OemAssyNumLength/2); | |
984f6868 GKH |
2611 | dev_dbg(dev, " OemAssyNumber: %s\n", string); |
2612 | dev_dbg(dev, " UartType: %d\n", | |
03f0dbf7 | 2613 | edge_serial->manuf_descriptor.UartType); |
984f6868 | 2614 | dev_dbg(dev, " IonPid: %d\n", |
03f0dbf7 | 2615 | edge_serial->manuf_descriptor.IonPid); |
984f6868 | 2616 | dev_dbg(dev, " IonConfig: %d\n", |
03f0dbf7 | 2617 | edge_serial->manuf_descriptor.IonConfig); |
1da177e4 LT |
2618 | } |
2619 | } | |
2620 | ||
2621 | ||
2622 | /**************************************************************************** | |
2623 | * get_boot_desc | |
03f0dbf7 | 2624 | * reads in the bootloader descriptor and stores it into the serial |
1da177e4 LT |
2625 | * structure. |
2626 | ****************************************************************************/ | |
03f0dbf7 | 2627 | static void get_boot_desc(struct edgeport_serial *edge_serial) |
1da177e4 | 2628 | { |
984f6868 | 2629 | struct device *dev = &edge_serial->serial->dev->dev; |
1da177e4 LT |
2630 | int response; |
2631 | ||
984f6868 | 2632 | dev_dbg(dev, "getting boot descriptor\n"); |
1da177e4 | 2633 | |
03f0dbf7 AC |
2634 | response = rom_read(edge_serial->serial, |
2635 | (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, | |
2636 | (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), | |
2637 | EDGE_BOOT_DESC_LEN, | |
2638 | (__u8 *)(&edge_serial->boot_descriptor)); | |
1da177e4 | 2639 | |
03f0dbf7 | 2640 | if (response < 1) |
984f6868 | 2641 | dev_err(dev, "error in getting boot descriptor\n"); |
03f0dbf7 | 2642 | else { |
984f6868 GKH |
2643 | dev_dbg(dev, "**Boot Descriptor:\n"); |
2644 | dev_dbg(dev, " BootCodeLength: %d\n", | |
2645 | le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); | |
2646 | dev_dbg(dev, " MajorVersion: %d\n", | |
03f0dbf7 | 2647 | edge_serial->boot_descriptor.MajorVersion); |
984f6868 | 2648 | dev_dbg(dev, " MinorVersion: %d\n", |
03f0dbf7 | 2649 | edge_serial->boot_descriptor.MinorVersion); |
984f6868 | 2650 | dev_dbg(dev, " BuildNumber: %d\n", |
03f0dbf7 | 2651 | le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
984f6868 | 2652 | dev_dbg(dev, " Capabilities: 0x%x\n", |
03f0dbf7 | 2653 | le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); |
984f6868 | 2654 | dev_dbg(dev, " UConfig0: %d\n", |
03f0dbf7 | 2655 | edge_serial->boot_descriptor.UConfig0); |
984f6868 | 2656 | dev_dbg(dev, " UConfig1: %d\n", |
03f0dbf7 | 2657 | edge_serial->boot_descriptor.UConfig1); |
1da177e4 LT |
2658 | } |
2659 | } | |
2660 | ||
2661 | ||
2662 | /**************************************************************************** | |
2663 | * load_application_firmware | |
2664 | * This is called to load the application firmware to the device | |
2665 | ****************************************************************************/ | |
03f0dbf7 | 2666 | static void load_application_firmware(struct edgeport_serial *edge_serial) |
1da177e4 | 2667 | { |
984f6868 | 2668 | struct device *dev = &edge_serial->serial->dev->dev; |
5b9ea932 JS |
2669 | const struct ihex_binrec *rec; |
2670 | const struct firmware *fw; | |
2671 | const char *fw_name; | |
2672 | const char *fw_info; | |
1da177e4 | 2673 | int response; |
5b9ea932 JS |
2674 | __u32 Operaddr; |
2675 | __u16 build; | |
1da177e4 LT |
2676 | |
2677 | switch (edge_serial->product_info.iDownloadFile) { | |
2678 | case EDGE_DOWNLOAD_FILE_I930: | |
5b9ea932 JS |
2679 | fw_info = "downloading firmware version (930)"; |
2680 | fw_name = "edgeport/down.fw"; | |
1da177e4 LT |
2681 | break; |
2682 | ||
2683 | case EDGE_DOWNLOAD_FILE_80251: | |
5b9ea932 JS |
2684 | fw_info = "downloading firmware version (80251)"; |
2685 | fw_name = "edgeport/down2.fw"; | |
1da177e4 LT |
2686 | break; |
2687 | ||
2688 | case EDGE_DOWNLOAD_FILE_NONE: | |
984f6868 | 2689 | dev_dbg(dev, "No download file specified, skipping download\n"); |
1da177e4 LT |
2690 | return; |
2691 | ||
2692 | default: | |
2693 | return; | |
2694 | } | |
2695 | ||
5b9ea932 JS |
2696 | response = request_ihex_firmware(&fw, fw_name, |
2697 | &edge_serial->serial->dev->dev); | |
2698 | if (response) { | |
984f6868 | 2699 | dev_err(dev, "Failed to load image \"%s\" err %d\n", |
5b9ea932 JS |
2700 | fw_name, response); |
2701 | return; | |
2702 | } | |
2703 | ||
2704 | rec = (const struct ihex_binrec *)fw->data; | |
2705 | build = (rec->data[2] << 8) | rec->data[3]; | |
2706 | ||
984f6868 | 2707 | dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); |
5b9ea932 | 2708 | |
271c1150 BM |
2709 | edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
2710 | edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; | |
5b9ea932 | 2711 | edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
1da177e4 | 2712 | |
5b9ea932 JS |
2713 | for (rec = ihex_next_binrec(rec); rec; |
2714 | rec = ihex_next_binrec(rec)) { | |
2715 | Operaddr = be32_to_cpu(rec->addr); | |
2716 | response = sram_write(edge_serial->serial, | |
2717 | Operaddr >> 16, | |
2718 | Operaddr & 0xFFFF, | |
2719 | be16_to_cpu(rec->len), | |
2720 | &rec->data[0]); | |
1da177e4 | 2721 | if (response < 0) { |
5b9ea932 JS |
2722 | dev_err(&edge_serial->serial->dev->dev, |
2723 | "sram_write failed (%x, %x, %d)\n", | |
2724 | Operaddr >> 16, Operaddr & 0xFFFF, | |
2725 | be16_to_cpu(rec->len)); | |
1da177e4 LT |
2726 | break; |
2727 | } | |
2728 | } | |
2729 | ||
984f6868 GKH |
2730 | dev_dbg(dev, "sending exec_dl_code\n"); |
2731 | response = usb_control_msg (edge_serial->serial->dev, | |
2732 | usb_sndctrlpipe(edge_serial->serial->dev, 0), | |
2733 | USB_REQUEST_ION_EXEC_DL_CODE, | |
1da177e4 LT |
2734 | 0x40, 0x4000, 0x0001, NULL, 0, 3000); |
2735 | ||
5b9ea932 | 2736 | release_firmware(fw); |
1da177e4 LT |
2737 | } |
2738 | ||
2739 | ||
2740 | /**************************************************************************** | |
2741 | * edge_startup | |
2742 | ****************************************************************************/ | |
03f0dbf7 | 2743 | static int edge_startup(struct usb_serial *serial) |
1da177e4 LT |
2744 | { |
2745 | struct edgeport_serial *edge_serial; | |
1da177e4 | 2746 | struct usb_device *dev; |
984f6868 | 2747 | struct device *ddev = &serial->dev->dev; |
c27f3efc | 2748 | int i; |
6e8cf775 | 2749 | int response; |
cb8eaa8b RK |
2750 | bool interrupt_in_found; |
2751 | bool bulk_in_found; | |
2752 | bool bulk_out_found; | |
6e8cf775 GKH |
2753 | static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
2754 | EDGE_COMPATIBILITY_MASK1, | |
2755 | EDGE_COMPATIBILITY_MASK2 }; | |
1da177e4 LT |
2756 | |
2757 | dev = serial->dev; | |
2758 | ||
2759 | /* create our private serial structure */ | |
80b6ca48 | 2760 | edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
10c642d0 | 2761 | if (!edge_serial) |
1da177e4 | 2762 | return -ENOMEM; |
10c642d0 | 2763 | |
1da177e4 LT |
2764 | spin_lock_init(&edge_serial->es_lock); |
2765 | edge_serial->serial = serial; | |
2766 | usb_set_serial_data(serial, edge_serial); | |
2767 | ||
2768 | /* get the name for the device from the device */ | |
f10718f5 | 2769 | i = usb_string(dev, dev->descriptor.iManufacturer, |
ad93375a | 2770 | &edge_serial->name[0], MAX_NAME_LEN+1); |
f10718f5 DC |
2771 | if (i < 0) |
2772 | i = 0; | |
ad93375a | 2773 | edge_serial->name[i++] = ' '; |
f10718f5 | 2774 | usb_string(dev, dev->descriptor.iProduct, |
ad93375a | 2775 | &edge_serial->name[i], MAX_NAME_LEN+2 - i); |
1da177e4 LT |
2776 | |
2777 | dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); | |
2778 | ||
6e8cf775 GKH |
2779 | /* Read the epic descriptor */ |
2780 | if (get_epic_descriptor(edge_serial) <= 0) { | |
2781 | /* memcpy descriptor to Supports structures */ | |
2782 | memcpy(&edge_serial->epic_descriptor.Supports, descriptor, | |
2783 | sizeof(struct edge_compatibility_bits)); | |
1da177e4 | 2784 | |
6e8cf775 | 2785 | /* get the manufacturing descriptor for this device */ |
03f0dbf7 | 2786 | get_manufacturing_desc(edge_serial); |
1da177e4 | 2787 | |
6e8cf775 | 2788 | /* get the boot descriptor */ |
03f0dbf7 | 2789 | get_boot_desc(edge_serial); |
6e8cf775 GKH |
2790 | |
2791 | get_product_info(edge_serial); | |
2792 | } | |
1da177e4 LT |
2793 | |
2794 | /* set the number of ports from the manufacturing description */ | |
2795 | /* serial->num_ports = serial->product_info.NumPorts; */ | |
6e8cf775 GKH |
2796 | if ((!edge_serial->is_epic) && |
2797 | (edge_serial->product_info.NumPorts != serial->num_ports)) { | |
984f6868 GKH |
2798 | dev_warn(ddev, |
2799 | "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", | |
6e8cf775 GKH |
2800 | edge_serial->product_info.NumPorts, |
2801 | serial->num_ports); | |
1da177e4 LT |
2802 | } |
2803 | ||
984f6868 | 2804 | dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); |
1da177e4 | 2805 | |
6e8cf775 GKH |
2806 | /* If not an EPiC device */ |
2807 | if (!edge_serial->is_epic) { | |
2808 | /* now load the application firmware into this device */ | |
03f0dbf7 | 2809 | load_application_firmware(edge_serial); |
1da177e4 | 2810 | |
984f6868 | 2811 | dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); |
1da177e4 | 2812 | |
6e8cf775 | 2813 | /* Check current Edgeport EEPROM and update if necessary */ |
03f0dbf7 | 2814 | update_edgeport_E2PROM(edge_serial); |
1da177e4 | 2815 | |
984f6868 | 2816 | dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); |
6e8cf775 GKH |
2817 | |
2818 | /* set the configuration to use #1 */ | |
984f6868 | 2819 | /* dev_dbg(ddev, "set_configuration 1\n"); */ |
03f0dbf7 | 2820 | /* usb_set_configuration (dev, 1); */ |
6e8cf775 | 2821 | } |
984f6868 | 2822 | dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", |
5b9ea932 JS |
2823 | edge_serial->product_info.FirmwareMajorVersion, |
2824 | edge_serial->product_info.FirmwareMinorVersion, | |
2825 | le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); | |
1da177e4 | 2826 | |
03f0dbf7 | 2827 | /* we set up the pointers to the endpoints in the edge_open function, |
1da177e4 LT |
2828 | * as the structures aren't created yet. */ |
2829 | ||
6e8cf775 GKH |
2830 | response = 0; |
2831 | ||
2832 | if (edge_serial->is_epic) { | |
03f0dbf7 AC |
2833 | /* EPIC thing, set up our interrupt polling now and our read |
2834 | * urb, so that the device knows it really is connected. */ | |
cb8eaa8b | 2835 | interrupt_in_found = bulk_in_found = bulk_out_found = false; |
03f0dbf7 AC |
2836 | for (i = 0; i < serial->interface->altsetting[0] |
2837 | .desc.bNumEndpoints; ++i) { | |
6e8cf775 GKH |
2838 | struct usb_endpoint_descriptor *endpoint; |
2839 | int buffer_size; | |
2840 | ||
03f0dbf7 AC |
2841 | endpoint = &serial->interface->altsetting[0]. |
2842 | endpoint[i].desc; | |
29cc8897 | 2843 | buffer_size = usb_endpoint_maxp(endpoint); |
cb8eaa8b | 2844 | if (!interrupt_in_found && |
6e8cf775 GKH |
2845 | (usb_endpoint_is_int_in(endpoint))) { |
2846 | /* we found a interrupt in endpoint */ | |
984f6868 | 2847 | dev_dbg(ddev, "found interrupt in\n"); |
6e8cf775 GKH |
2848 | |
2849 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
2850 | edge_serial->interrupt_read_urb = |
2851 | usb_alloc_urb(0, GFP_KERNEL); | |
10c642d0 | 2852 | if (!edge_serial->interrupt_read_urb) |
6e8cf775 | 2853 | return -ENOMEM; |
10c642d0 | 2854 | |
03f0dbf7 AC |
2855 | edge_serial->interrupt_in_buffer = |
2856 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 2857 | if (!edge_serial->interrupt_in_buffer) { |
6e8cf775 GKH |
2858 | usb_free_urb(edge_serial->interrupt_read_urb); |
2859 | return -ENOMEM; | |
2860 | } | |
03f0dbf7 AC |
2861 | edge_serial->interrupt_in_endpoint = |
2862 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
2863 | |
2864 | /* set up our interrupt urb */ | |
03f0dbf7 AC |
2865 | usb_fill_int_urb( |
2866 | edge_serial->interrupt_read_urb, | |
2867 | dev, | |
2868 | usb_rcvintpipe(dev, | |
2869 | endpoint->bEndpointAddress), | |
2870 | edge_serial->interrupt_in_buffer, | |
2871 | buffer_size, | |
2872 | edge_interrupt_callback, | |
2873 | edge_serial, | |
2874 | endpoint->bInterval); | |
6e8cf775 | 2875 | |
cb8eaa8b | 2876 | interrupt_in_found = true; |
6e8cf775 GKH |
2877 | } |
2878 | ||
cb8eaa8b | 2879 | if (!bulk_in_found && |
03f0dbf7 | 2880 | (usb_endpoint_is_bulk_in(endpoint))) { |
6e8cf775 | 2881 | /* we found a bulk in endpoint */ |
984f6868 | 2882 | dev_dbg(ddev, "found bulk in\n"); |
6e8cf775 GKH |
2883 | |
2884 | /* not set up yet, so do it now */ | |
03f0dbf7 AC |
2885 | edge_serial->read_urb = |
2886 | usb_alloc_urb(0, GFP_KERNEL); | |
10c642d0 | 2887 | if (!edge_serial->read_urb) |
6e8cf775 | 2888 | return -ENOMEM; |
10c642d0 | 2889 | |
03f0dbf7 AC |
2890 | edge_serial->bulk_in_buffer = |
2891 | kmalloc(buffer_size, GFP_KERNEL); | |
6e8cf775 | 2892 | if (!edge_serial->bulk_in_buffer) { |
6e8cf775 GKH |
2893 | usb_free_urb(edge_serial->read_urb); |
2894 | return -ENOMEM; | |
2895 | } | |
03f0dbf7 AC |
2896 | edge_serial->bulk_in_endpoint = |
2897 | endpoint->bEndpointAddress; | |
6e8cf775 GKH |
2898 | |
2899 | /* set up our bulk in urb */ | |
2900 | usb_fill_bulk_urb(edge_serial->read_urb, dev, | |
03f0dbf7 AC |
2901 | usb_rcvbulkpipe(dev, |
2902 | endpoint->bEndpointAddress), | |
2903 | edge_serial->bulk_in_buffer, | |
29cc8897 | 2904 | usb_endpoint_maxp(endpoint), |
03f0dbf7 AC |
2905 | edge_bulk_in_callback, |
2906 | edge_serial); | |
cb8eaa8b | 2907 | bulk_in_found = true; |
6e8cf775 GKH |
2908 | } |
2909 | ||
cb8eaa8b | 2910 | if (!bulk_out_found && |
6e8cf775 GKH |
2911 | (usb_endpoint_is_bulk_out(endpoint))) { |
2912 | /* we found a bulk out endpoint */ | |
984f6868 | 2913 | dev_dbg(ddev, "found bulk out\n"); |
03f0dbf7 AC |
2914 | edge_serial->bulk_out_endpoint = |
2915 | endpoint->bEndpointAddress; | |
cb8eaa8b | 2916 | bulk_out_found = true; |
6e8cf775 GKH |
2917 | } |
2918 | } | |
2919 | ||
cb8eaa8b | 2920 | if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) { |
984f6868 | 2921 | dev_err(ddev, "Error - the proper endpoints were not found!\n"); |
6e8cf775 GKH |
2922 | return -ENODEV; |
2923 | } | |
2924 | ||
2925 | /* start interrupt read for this edgeport this interrupt will | |
2926 | * continue as long as the edgeport is connected */ | |
03f0dbf7 AC |
2927 | response = usb_submit_urb(edge_serial->interrupt_read_urb, |
2928 | GFP_KERNEL); | |
6e8cf775 | 2929 | if (response) |
984f6868 | 2930 | dev_err(ddev, "%s - Error %d submitting control urb\n", |
194343d9 | 2931 | __func__, response); |
6e8cf775 GKH |
2932 | } |
2933 | return response; | |
1da177e4 LT |
2934 | } |
2935 | ||
2936 | ||
2937 | /**************************************************************************** | |
f9c99bb8 | 2938 | * edge_disconnect |
1da177e4 LT |
2939 | * This function is called whenever the device is removed from the usb bus. |
2940 | ****************************************************************************/ | |
f9c99bb8 | 2941 | static void edge_disconnect(struct usb_serial *serial) |
1da177e4 | 2942 | { |
6e8cf775 | 2943 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
1da177e4 | 2944 | |
1da177e4 | 2945 | /* stop reads and writes on all ports */ |
6e8cf775 GKH |
2946 | /* free up our endpoint stuff */ |
2947 | if (edge_serial->is_epic) { | |
74ac07e8 | 2948 | usb_kill_urb(edge_serial->interrupt_read_urb); |
6e8cf775 GKH |
2949 | usb_free_urb(edge_serial->interrupt_read_urb); |
2950 | kfree(edge_serial->interrupt_in_buffer); | |
2951 | ||
74ac07e8 | 2952 | usb_kill_urb(edge_serial->read_urb); |
6e8cf775 GKH |
2953 | usb_free_urb(edge_serial->read_urb); |
2954 | kfree(edge_serial->bulk_in_buffer); | |
2955 | } | |
f9c99bb8 AS |
2956 | } |
2957 | ||
2958 | ||
2959 | /**************************************************************************** | |
2960 | * edge_release | |
2961 | * This function is called when the device structure is deallocated. | |
2962 | ****************************************************************************/ | |
2963 | static void edge_release(struct usb_serial *serial) | |
2964 | { | |
2965 | struct edgeport_serial *edge_serial = usb_get_serial_data(serial); | |
6e8cf775 GKH |
2966 | |
2967 | kfree(edge_serial); | |
1da177e4 LT |
2968 | } |
2969 | ||
c27f3efc JH |
2970 | static int edge_port_probe(struct usb_serial_port *port) |
2971 | { | |
2972 | struct edgeport_port *edge_port; | |
2973 | ||
2974 | edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); | |
2975 | if (!edge_port) | |
2976 | return -ENOMEM; | |
2977 | ||
2978 | spin_lock_init(&edge_port->ep_lock); | |
2979 | edge_port->port = port; | |
2980 | ||
2981 | usb_set_serial_port_data(port, edge_port); | |
2982 | ||
2983 | return 0; | |
2984 | } | |
2985 | ||
2986 | static int edge_port_remove(struct usb_serial_port *port) | |
2987 | { | |
2988 | struct edgeport_port *edge_port; | |
2989 | ||
2990 | edge_port = usb_get_serial_port_data(port); | |
2991 | kfree(edge_port); | |
2992 | ||
2993 | return 0; | |
2994 | } | |
2995 | ||
68e24113 | 2996 | module_usb_serial_driver(serial_drivers, id_table_combined); |
1da177e4 | 2997 | |
03f0dbf7 AC |
2998 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2999 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 3000 | MODULE_LICENSE("GPL"); |
5b9ea932 JS |
3001 | MODULE_FIRMWARE("edgeport/boot.fw"); |
3002 | MODULE_FIRMWARE("edgeport/boot2.fw"); | |
3003 | MODULE_FIRMWARE("edgeport/down.fw"); | |
3004 | MODULE_FIRMWARE("edgeport/down2.fw"); |