2 * Edgeport USB Serial Converter driver
4 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
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.
12 * Supports the following devices:
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>.
32 #include <linux/kernel.h>
33 #include <linux/jiffies.h>
34 #include <linux/errno.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/tty.h>
38 #include <linux/tty_driver.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/serial.h>
43 #include <linux/ioctl.h>
44 #include <linux/wait.h>
45 #include <linux/firmware.h>
46 #include <linux/ihex.h>
47 #include <linux/uaccess.h>
48 #include <linux/usb.h>
49 #include <linux/usb/serial.h>
50 #include "io_edgeport.h"
51 #include "io_ionsp.h" /* info for the iosp messages */
52 #include "io_16654.h" /* 16654 UART defines */
54 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
55 #define DRIVER_DESC "Edgeport USB Serial Driver"
57 #define MAX_NAME_LEN 64
59 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
60 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
61 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
63 /* receive port state */
65 EXPECT_HDR1
= 0, /* Expect header byte 1 */
66 EXPECT_HDR2
= 1, /* Expect header byte 2 */
67 EXPECT_DATA
= 2, /* Expect 'RxBytesRemaining' data */
68 EXPECT_HDR3
= 3, /* Expect header byte 3 (for status hdrs only) */
73 * This Transmit queue is an extension of the edgeport Rx buffer.
74 * The maximum amount of data buffered in both the edgeport
75 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
78 unsigned int head
; /* index to head pointer (write) */
79 unsigned int tail
; /* index to tail pointer (read) */
80 unsigned int count
; /* Bytes in queue */
81 unsigned int size
; /* Max size of queue (equal to Max number of TxCredits) */
82 unsigned char *fifo
; /* allocated Buffer */
85 /* This structure holds all of the local port information */
86 struct edgeport_port
{
87 __u16 txCredits
; /* our current credits for this port */
88 __u16 maxTxCredits
; /* the max size of the port */
90 struct TxFifo txfifo
; /* transmit fifo -- size will be maxTxCredits */
91 struct urb
*write_urb
; /* write URB for this port */
92 bool write_in_progress
; /* 'true' while a write URB is outstanding */
95 __u8 shadowLCR
; /* last LCR value received */
96 __u8 shadowMCR
; /* last MCR value received */
97 __u8 shadowMSR
; /* last MSR value received */
98 __u8 shadowLSR
; /* last LSR value received */
99 __u8 shadowXonChar
; /* last value set as XON char in Edgeport */
100 __u8 shadowXoffChar
; /* last value set as XOFF char in Edgeport */
108 bool chaseResponsePending
;
110 wait_queue_head_t wait_chase
; /* for handling sleeping while waiting for chase to finish */
111 wait_queue_head_t wait_open
; /* for handling sleeping while waiting for open to finish */
112 wait_queue_head_t wait_command
; /* for handling sleeping while waiting for command to finish */
114 struct usb_serial_port
*port
; /* loop back to the owner of this object */
118 /* This structure holds all of the individual device information */
119 struct edgeport_serial
{
120 char name
[MAX_NAME_LEN
+2]; /* string name of this device */
122 struct edge_manuf_descriptor manuf_descriptor
; /* the manufacturer descriptor */
123 struct edge_boot_descriptor boot_descriptor
; /* the boot firmware descriptor */
124 struct edgeport_product_info product_info
; /* Product Info */
125 struct edge_compatibility_descriptor epic_descriptor
; /* Edgeport compatible descriptor */
126 int is_epic
; /* flag if EPiC device or not */
128 __u8 interrupt_in_endpoint
; /* the interrupt endpoint handle */
129 unsigned char *interrupt_in_buffer
; /* the buffer we use for the interrupt endpoint */
130 struct urb
*interrupt_read_urb
; /* our interrupt urb */
132 __u8 bulk_in_endpoint
; /* the bulk in endpoint handle */
133 unsigned char *bulk_in_buffer
; /* the buffer we use for the bulk in endpoint */
134 struct urb
*read_urb
; /* our bulk read urb */
135 bool read_in_progress
;
138 __u8 bulk_out_endpoint
; /* the bulk out endpoint handle */
140 __s16 rxBytesAvail
; /* the number of bytes that we need to read from this device */
142 enum RXSTATE rxState
; /* the current state of the bulk receive processor */
143 __u8 rxHeader1
; /* receive header byte 1 */
144 __u8 rxHeader2
; /* receive header byte 2 */
145 __u8 rxHeader3
; /* receive header byte 3 */
146 __u8 rxPort
; /* the port that we are currently receiving data for */
147 __u8 rxStatusCode
; /* the receive status code */
148 __u8 rxStatusParam
; /* the receive status paramater */
149 __s16 rxBytesRemaining
; /* the number of port bytes left to read */
150 struct usb_serial
*serial
; /* loop back to the owner of this object */
153 /* baud rate information */
154 struct divisor_table_entry
{
160 * Define table of divisors for Rev A EdgePort/4 hardware
161 * These assume a 3.6864MHz crystal, the standard /16, and
165 static const struct divisor_table_entry divisor_table
[] = {
168 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
169 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
187 /* Number of outstanding Command Write Urbs */
188 static atomic_t CmdUrbs
= ATOMIC_INIT(0);
191 /* local function prototypes */
193 /* function prototypes for all URB callbacks */
194 static void edge_interrupt_callback(struct urb
*urb
);
195 static void edge_bulk_in_callback(struct urb
*urb
);
196 static void edge_bulk_out_data_callback(struct urb
*urb
);
197 static void edge_bulk_out_cmd_callback(struct urb
*urb
);
199 /* function prototypes for the usbserial callbacks */
200 static int edge_open(struct tty_struct
*tty
, struct usb_serial_port
*port
);
201 static void edge_close(struct usb_serial_port
*port
);
202 static int edge_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
203 const unsigned char *buf
, int count
);
204 static int edge_write_room(struct tty_struct
*tty
);
205 static int edge_chars_in_buffer(struct tty_struct
*tty
);
206 static void edge_throttle(struct tty_struct
*tty
);
207 static void edge_unthrottle(struct tty_struct
*tty
);
208 static void edge_set_termios(struct tty_struct
*tty
,
209 struct usb_serial_port
*port
,
210 struct ktermios
*old_termios
);
211 static int edge_ioctl(struct tty_struct
*tty
,
212 unsigned int cmd
, unsigned long arg
);
213 static void edge_break(struct tty_struct
*tty
, int break_state
);
214 static int edge_tiocmget(struct tty_struct
*tty
);
215 static int edge_tiocmset(struct tty_struct
*tty
,
216 unsigned int set
, unsigned int clear
);
217 static int edge_startup(struct usb_serial
*serial
);
218 static void edge_disconnect(struct usb_serial
*serial
);
219 static void edge_release(struct usb_serial
*serial
);
220 static int edge_port_probe(struct usb_serial_port
*port
);
221 static int edge_port_remove(struct usb_serial_port
*port
);
223 #include "io_tables.h" /* all of the devices that this driver supports */
225 /* function prototypes for all of our local functions */
227 static void process_rcvd_data(struct edgeport_serial
*edge_serial
,
228 unsigned char *buffer
, __u16 bufferLength
);
229 static void process_rcvd_status(struct edgeport_serial
*edge_serial
,
230 __u8 byte2
, __u8 byte3
);
231 static void edge_tty_recv(struct usb_serial_port
*port
, unsigned char *data
,
233 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
);
234 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
,
235 __u8 lsr
, __u8 data
);
236 static int send_iosp_ext_cmd(struct edgeport_port
*edge_port
, __u8 command
,
238 static int calc_baud_rate_divisor(struct device
*dev
, int baud_rate
, int *divisor
);
239 static int send_cmd_write_baud_rate(struct edgeport_port
*edge_port
,
241 static void change_port_settings(struct tty_struct
*tty
,
242 struct edgeport_port
*edge_port
,
243 struct ktermios
*old_termios
);
244 static int send_cmd_write_uart_register(struct edgeport_port
*edge_port
,
245 __u8 regNum
, __u8 regValue
);
246 static int write_cmd_usb(struct edgeport_port
*edge_port
,
247 unsigned char *buffer
, int writeLength
);
248 static void send_more_port_data(struct edgeport_serial
*edge_serial
,
249 struct edgeport_port
*edge_port
);
251 static int sram_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
252 __u16 length
, const __u8
*data
);
253 static int rom_read(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
254 __u16 length
, __u8
*data
);
255 static int rom_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
256 __u16 length
, const __u8
*data
);
257 static void get_manufacturing_desc(struct edgeport_serial
*edge_serial
);
258 static void get_boot_desc(struct edgeport_serial
*edge_serial
);
259 static void load_application_firmware(struct edgeport_serial
*edge_serial
);
261 static void unicode_to_ascii(char *string
, int buflen
,
262 __le16
*unicode
, int unicode_size
);
265 /* ************************************************************************ */
266 /* ************************************************************************ */
267 /* ************************************************************************ */
268 /* ************************************************************************ */
270 /************************************************************************
272 * update_edgeport_E2PROM() Compare current versions of *
273 * Boot ROM and Manufacture *
274 * Descriptors with versions *
275 * embedded in this driver *
277 ************************************************************************/
278 static void update_edgeport_E2PROM(struct edgeport_serial
*edge_serial
)
280 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
283 __u8 BootMajorVersion
;
284 __u8 BootMinorVersion
;
285 __u16 BootBuildNumber
;
287 const struct ihex_binrec
*rec
;
288 const struct firmware
*fw
;
292 switch (edge_serial
->product_info
.iDownloadFile
) {
293 case EDGE_DOWNLOAD_FILE_I930
:
294 fw_name
= "edgeport/boot.fw";
296 case EDGE_DOWNLOAD_FILE_80251
:
297 fw_name
= "edgeport/boot2.fw";
303 response
= request_ihex_firmware(&fw
, fw_name
,
304 &edge_serial
->serial
->dev
->dev
);
306 dev_err(dev
, "Failed to load image \"%s\" err %d\n",
311 rec
= (const struct ihex_binrec
*)fw
->data
;
312 BootMajorVersion
= rec
->data
[0];
313 BootMinorVersion
= rec
->data
[1];
314 BootBuildNumber
= (rec
->data
[2] << 8) | rec
->data
[3];
316 /* Check Boot Image Version */
317 BootCurVer
= (edge_serial
->boot_descriptor
.MajorVersion
<< 24) +
318 (edge_serial
->boot_descriptor
.MinorVersion
<< 16) +
319 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
);
321 BootNewVer
= (BootMajorVersion
<< 24) +
322 (BootMinorVersion
<< 16) +
325 dev_dbg(dev
, "Current Boot Image version %d.%d.%d\n",
326 edge_serial
->boot_descriptor
.MajorVersion
,
327 edge_serial
->boot_descriptor
.MinorVersion
,
328 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
331 if (BootNewVer
> BootCurVer
) {
332 dev_dbg(dev
, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
333 edge_serial
->boot_descriptor
.MajorVersion
,
334 edge_serial
->boot_descriptor
.MinorVersion
,
335 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
),
336 BootMajorVersion
, BootMinorVersion
, BootBuildNumber
);
338 dev_dbg(dev
, "Downloading new Boot Image\n");
340 for (rec
= ihex_next_binrec(rec
); rec
;
341 rec
= ihex_next_binrec(rec
)) {
342 Bootaddr
= be32_to_cpu(rec
->addr
);
343 response
= rom_write(edge_serial
->serial
,
346 be16_to_cpu(rec
->len
),
349 dev_err(&edge_serial
->serial
->dev
->dev
,
350 "rom_write failed (%x, %x, %d)\n",
351 Bootaddr
>> 16, Bootaddr
& 0xFFFF,
352 be16_to_cpu(rec
->len
));
357 dev_dbg(dev
, "Boot Image -- already up to date\n");
359 release_firmware(fw
);
363 /************************************************************************
365 * Get string descriptor from device
367 ************************************************************************/
368 static int get_string_desc(struct usb_device
*dev
, int Id
,
369 struct usb_string_descriptor
**pRetDesc
)
371 struct usb_string_descriptor StringDesc
;
372 struct usb_string_descriptor
*pStringDesc
;
374 dev_dbg(&dev
->dev
, "%s - USB String ID = %d\n", __func__
, Id
);
376 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
,
380 pStringDesc
= kmalloc(StringDesc
.bLength
, GFP_KERNEL
);
384 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
,
385 StringDesc
.bLength
)) {
390 *pRetDesc
= pStringDesc
;
395 static void dump_product_info(struct edgeport_serial
*edge_serial
,
396 struct edgeport_product_info
*product_info
)
398 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
400 /* Dump Product Info structure */
401 dev_dbg(dev
, "**Product Information:\n");
402 dev_dbg(dev
, " ProductId %x\n", product_info
->ProductId
);
403 dev_dbg(dev
, " NumPorts %d\n", product_info
->NumPorts
);
404 dev_dbg(dev
, " ProdInfoVer %d\n", product_info
->ProdInfoVer
);
405 dev_dbg(dev
, " IsServer %d\n", product_info
->IsServer
);
406 dev_dbg(dev
, " IsRS232 %d\n", product_info
->IsRS232
);
407 dev_dbg(dev
, " IsRS422 %d\n", product_info
->IsRS422
);
408 dev_dbg(dev
, " IsRS485 %d\n", product_info
->IsRS485
);
409 dev_dbg(dev
, " RomSize %d\n", product_info
->RomSize
);
410 dev_dbg(dev
, " RamSize %d\n", product_info
->RamSize
);
411 dev_dbg(dev
, " CpuRev %x\n", product_info
->CpuRev
);
412 dev_dbg(dev
, " BoardRev %x\n", product_info
->BoardRev
);
413 dev_dbg(dev
, " BootMajorVersion %d.%d.%d\n",
414 product_info
->BootMajorVersion
,
415 product_info
->BootMinorVersion
,
416 le16_to_cpu(product_info
->BootBuildNumber
));
417 dev_dbg(dev
, " FirmwareMajorVersion %d.%d.%d\n",
418 product_info
->FirmwareMajorVersion
,
419 product_info
->FirmwareMinorVersion
,
420 le16_to_cpu(product_info
->FirmwareBuildNumber
));
421 dev_dbg(dev
, " ManufactureDescDate %d/%d/%d\n",
422 product_info
->ManufactureDescDate
[0],
423 product_info
->ManufactureDescDate
[1],
424 product_info
->ManufactureDescDate
[2]+1900);
425 dev_dbg(dev
, " iDownloadFile 0x%x\n",
426 product_info
->iDownloadFile
);
427 dev_dbg(dev
, " EpicVer %d\n", product_info
->EpicVer
);
430 static void get_product_info(struct edgeport_serial
*edge_serial
)
432 struct edgeport_product_info
*product_info
= &edge_serial
->product_info
;
434 memset(product_info
, 0, sizeof(struct edgeport_product_info
));
436 product_info
->ProductId
= (__u16
)(le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ~ION_DEVICE_ID_80251_NETCHIP
);
437 product_info
->NumPorts
= edge_serial
->manuf_descriptor
.NumPorts
;
438 product_info
->ProdInfoVer
= 0;
440 product_info
->RomSize
= edge_serial
->manuf_descriptor
.RomSize
;
441 product_info
->RamSize
= edge_serial
->manuf_descriptor
.RamSize
;
442 product_info
->CpuRev
= edge_serial
->manuf_descriptor
.CpuRev
;
443 product_info
->BoardRev
= edge_serial
->manuf_descriptor
.BoardRev
;
445 product_info
->BootMajorVersion
=
446 edge_serial
->boot_descriptor
.MajorVersion
;
447 product_info
->BootMinorVersion
=
448 edge_serial
->boot_descriptor
.MinorVersion
;
449 product_info
->BootBuildNumber
=
450 edge_serial
->boot_descriptor
.BuildNumber
;
452 memcpy(product_info
->ManufactureDescDate
,
453 edge_serial
->manuf_descriptor
.DescDate
,
454 sizeof(edge_serial
->manuf_descriptor
.DescDate
));
456 /* check if this is 2nd generation hardware */
457 if (le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
)
458 & ION_DEVICE_ID_80251_NETCHIP
)
459 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_80251
;
461 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_I930
;
463 /* Determine Product type and set appropriate flags */
464 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info
->ProductId
)) {
465 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE
:
466 case ION_DEVICE_ID_EDGEPORT_4T
:
467 case ION_DEVICE_ID_EDGEPORT_4
:
468 case ION_DEVICE_ID_EDGEPORT_2
:
469 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU
:
470 case ION_DEVICE_ID_EDGEPORT_8
:
471 case ION_DEVICE_ID_EDGEPORT_421
:
472 case ION_DEVICE_ID_EDGEPORT_21
:
473 case ION_DEVICE_ID_EDGEPORT_2_DIN
:
474 case ION_DEVICE_ID_EDGEPORT_4_DIN
:
475 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU
:
476 product_info
->IsRS232
= 1;
479 case ION_DEVICE_ID_EDGEPORT_2I
: /* Edgeport/2 RS422/RS485 */
480 product_info
->IsRS422
= 1;
481 product_info
->IsRS485
= 1;
484 case ION_DEVICE_ID_EDGEPORT_8I
: /* Edgeport/4 RS422 */
485 case ION_DEVICE_ID_EDGEPORT_4I
: /* Edgeport/4 RS422 */
486 product_info
->IsRS422
= 1;
490 dump_product_info(edge_serial
, product_info
);
493 static int get_epic_descriptor(struct edgeport_serial
*ep
)
496 struct usb_serial
*serial
= ep
->serial
;
497 struct edgeport_product_info
*product_info
= &ep
->product_info
;
498 struct edge_compatibility_descriptor
*epic
= &ep
->epic_descriptor
;
499 struct edge_compatibility_bits
*bits
;
500 struct device
*dev
= &serial
->dev
->dev
;
503 result
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
504 USB_REQUEST_ION_GET_EPIC_DESC
,
506 &ep
->epic_descriptor
,
507 sizeof(struct edge_compatibility_descriptor
),
512 memset(product_info
, 0, sizeof(struct edgeport_product_info
));
514 product_info
->NumPorts
= epic
->NumPorts
;
515 product_info
->ProdInfoVer
= 0;
516 product_info
->FirmwareMajorVersion
= epic
->MajorVersion
;
517 product_info
->FirmwareMinorVersion
= epic
->MinorVersion
;
518 product_info
->FirmwareBuildNumber
= epic
->BuildNumber
;
519 product_info
->iDownloadFile
= epic
->iDownloadFile
;
520 product_info
->EpicVer
= epic
->EpicVer
;
521 product_info
->Epic
= epic
->Supports
;
522 product_info
->ProductId
= ION_DEVICE_ID_EDGEPORT_COMPATIBLE
;
523 dump_product_info(ep
, product_info
);
525 bits
= &ep
->epic_descriptor
.Supports
;
526 dev_dbg(dev
, "**EPIC descriptor:\n");
527 dev_dbg(dev
, " VendEnableSuspend: %s\n", bits
->VendEnableSuspend
? "TRUE": "FALSE");
528 dev_dbg(dev
, " IOSPOpen : %s\n", bits
->IOSPOpen
? "TRUE": "FALSE");
529 dev_dbg(dev
, " IOSPClose : %s\n", bits
->IOSPClose
? "TRUE": "FALSE");
530 dev_dbg(dev
, " IOSPChase : %s\n", bits
->IOSPChase
? "TRUE": "FALSE");
531 dev_dbg(dev
, " IOSPSetRxFlow : %s\n", bits
->IOSPSetRxFlow
? "TRUE": "FALSE");
532 dev_dbg(dev
, " IOSPSetTxFlow : %s\n", bits
->IOSPSetTxFlow
? "TRUE": "FALSE");
533 dev_dbg(dev
, " IOSPSetXChar : %s\n", bits
->IOSPSetXChar
? "TRUE": "FALSE");
534 dev_dbg(dev
, " IOSPRxCheck : %s\n", bits
->IOSPRxCheck
? "TRUE": "FALSE");
535 dev_dbg(dev
, " IOSPSetClrBreak : %s\n", bits
->IOSPSetClrBreak
? "TRUE": "FALSE");
536 dev_dbg(dev
, " IOSPWriteMCR : %s\n", bits
->IOSPWriteMCR
? "TRUE": "FALSE");
537 dev_dbg(dev
, " IOSPWriteLCR : %s\n", bits
->IOSPWriteLCR
? "TRUE": "FALSE");
538 dev_dbg(dev
, " IOSPSetBaudRate : %s\n", bits
->IOSPSetBaudRate
? "TRUE": "FALSE");
539 dev_dbg(dev
, " TrueEdgeport : %s\n", bits
->TrueEdgeport
? "TRUE": "FALSE");
546 /************************************************************************/
547 /************************************************************************/
548 /* U S B C A L L B A C K F U N C T I O N S */
549 /* U S B C A L L B A C K F U N C T I O N S */
550 /************************************************************************/
551 /************************************************************************/
553 /*****************************************************************************
554 * edge_interrupt_callback
555 * this is the callback function for when we have received data on the
556 * interrupt endpoint.
557 *****************************************************************************/
558 static void edge_interrupt_callback(struct urb
*urb
)
560 struct edgeport_serial
*edge_serial
= urb
->context
;
562 struct edgeport_port
*edge_port
;
563 struct usb_serial_port
*port
;
564 unsigned char *data
= urb
->transfer_buffer
;
565 int length
= urb
->actual_length
;
571 int status
= urb
->status
;
580 /* this urb is terminated, clean up */
581 dev_dbg(&urb
->dev
->dev
, "%s - urb shutting down with status: %d\n", __func__
, status
);
584 dev_dbg(&urb
->dev
->dev
, "%s - nonzero urb status received: %d\n", __func__
, status
);
588 dev
= &edge_serial
->serial
->dev
->dev
;
590 /* process this interrupt-read even if there are no ports open */
592 usb_serial_debug_data(dev
, __func__
, length
, data
);
595 bytes_avail
= data
[0] | (data
[1] << 8);
597 spin_lock(&edge_serial
->es_lock
);
598 edge_serial
->rxBytesAvail
+= bytes_avail
;
600 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
601 __func__
, bytes_avail
,
602 edge_serial
->rxBytesAvail
,
603 edge_serial
->read_in_progress
);
605 if (edge_serial
->rxBytesAvail
> 0 &&
606 !edge_serial
->read_in_progress
) {
607 dev_dbg(dev
, "%s - posting a read\n", __func__
);
608 edge_serial
->read_in_progress
= true;
610 /* we have pending bytes on the
611 bulk in pipe, send a request */
612 result
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
615 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
617 edge_serial
->read_in_progress
= false;
620 spin_unlock(&edge_serial
->es_lock
);
623 /* grab the txcredits for the ports if available */
626 while ((position
< length
) &&
627 (portNumber
< edge_serial
->serial
->num_ports
)) {
628 txCredits
= data
[position
] | (data
[position
+1] << 8);
630 port
= edge_serial
->serial
->port
[portNumber
];
631 edge_port
= usb_get_serial_port_data(port
);
632 if (edge_port
->open
) {
633 spin_lock(&edge_port
->ep_lock
);
634 edge_port
->txCredits
+= txCredits
;
635 spin_unlock(&edge_port
->ep_lock
);
636 dev_dbg(dev
, "%s - txcredits for port%d = %d\n",
637 __func__
, portNumber
,
638 edge_port
->txCredits
);
640 /* tell the tty driver that something
642 tty_port_tty_wakeup(&edge_port
->port
->port
);
643 /* Since we have more credit, check
644 if more data can be sent */
645 send_more_port_data(edge_serial
,
655 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
657 dev_err(&urb
->dev
->dev
,
658 "%s - Error %d submitting control urb\n",
663 /*****************************************************************************
664 * edge_bulk_in_callback
665 * this is the callback function for when we have received data on the
667 *****************************************************************************/
668 static void edge_bulk_in_callback(struct urb
*urb
)
670 struct edgeport_serial
*edge_serial
= urb
->context
;
672 unsigned char *data
= urb
->transfer_buffer
;
674 __u16 raw_data_length
;
675 int status
= urb
->status
;
678 dev_dbg(&urb
->dev
->dev
, "%s - nonzero read bulk status received: %d\n",
680 edge_serial
->read_in_progress
= false;
684 if (urb
->actual_length
== 0) {
685 dev_dbg(&urb
->dev
->dev
, "%s - read bulk callback with no data\n", __func__
);
686 edge_serial
->read_in_progress
= false;
690 dev
= &edge_serial
->serial
->dev
->dev
;
691 raw_data_length
= urb
->actual_length
;
693 usb_serial_debug_data(dev
, __func__
, raw_data_length
, data
);
695 spin_lock(&edge_serial
->es_lock
);
697 /* decrement our rxBytes available by the number that we just got */
698 edge_serial
->rxBytesAvail
-= raw_data_length
;
700 dev_dbg(dev
, "%s - Received = %d, rxBytesAvail %d\n", __func__
,
701 raw_data_length
, edge_serial
->rxBytesAvail
);
703 process_rcvd_data(edge_serial
, data
, urb
->actual_length
);
705 /* check to see if there's any more data for us to read */
706 if (edge_serial
->rxBytesAvail
> 0) {
707 dev_dbg(dev
, "%s - posting a read\n", __func__
);
708 retval
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
711 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
713 edge_serial
->read_in_progress
= false;
716 edge_serial
->read_in_progress
= false;
719 spin_unlock(&edge_serial
->es_lock
);
723 /*****************************************************************************
724 * edge_bulk_out_data_callback
725 * this is the callback function for when we have finished sending
726 * serial data on the bulk out endpoint.
727 *****************************************************************************/
728 static void edge_bulk_out_data_callback(struct urb
*urb
)
730 struct edgeport_port
*edge_port
= urb
->context
;
731 int status
= urb
->status
;
734 dev_dbg(&urb
->dev
->dev
,
735 "%s - nonzero write bulk status received: %d\n",
740 tty_port_tty_wakeup(&edge_port
->port
->port
);
742 /* Release the Write URB */
743 edge_port
->write_in_progress
= false;
745 /* Check if more data needs to be sent */
746 send_more_port_data((struct edgeport_serial
*)
747 (usb_get_serial_data(edge_port
->port
->serial
)), edge_port
);
751 /*****************************************************************************
753 * this is the callback function for when we have finished sending a
754 * command on the bulk out endpoint.
755 *****************************************************************************/
756 static void edge_bulk_out_cmd_callback(struct urb
*urb
)
758 struct edgeport_port
*edge_port
= urb
->context
;
759 int status
= urb
->status
;
761 atomic_dec(&CmdUrbs
);
762 dev_dbg(&urb
->dev
->dev
, "%s - FREE URB %p (outstanding %d)\n",
763 __func__
, urb
, atomic_read(&CmdUrbs
));
766 /* clean up the transfer buffer */
767 kfree(urb
->transfer_buffer
);
769 /* Free the command urb */
773 dev_dbg(&urb
->dev
->dev
,
774 "%s - nonzero write bulk status received: %d\n",
779 /* tell the tty driver that something has changed */
781 tty_port_tty_wakeup(&edge_port
->port
->port
);
783 /* we have completed the command */
784 edge_port
->commandPending
= false;
785 wake_up(&edge_port
->wait_command
);
789 /*****************************************************************************
790 * Driver tty interface functions
791 *****************************************************************************/
793 /*****************************************************************************
795 * this function is called by the tty driver when a port is opened
796 * If successful, we return 0
797 * Otherwise we return a negative error number.
798 *****************************************************************************/
799 static int edge_open(struct tty_struct
*tty
, struct usb_serial_port
*port
)
801 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
802 struct device
*dev
= &port
->dev
;
803 struct usb_serial
*serial
;
804 struct edgeport_serial
*edge_serial
;
807 if (edge_port
== NULL
)
810 /* see if we've set up our endpoint info yet (can't set it up
811 in edge_startup as the structures were not set up at that time.) */
812 serial
= port
->serial
;
813 edge_serial
= usb_get_serial_data(serial
);
814 if (edge_serial
== NULL
)
816 if (edge_serial
->interrupt_in_buffer
== NULL
) {
817 struct usb_serial_port
*port0
= serial
->port
[0];
819 /* not set up yet, so do it now */
820 edge_serial
->interrupt_in_buffer
=
821 port0
->interrupt_in_buffer
;
822 edge_serial
->interrupt_in_endpoint
=
823 port0
->interrupt_in_endpointAddress
;
824 edge_serial
->interrupt_read_urb
= port0
->interrupt_in_urb
;
825 edge_serial
->bulk_in_buffer
= port0
->bulk_in_buffer
;
826 edge_serial
->bulk_in_endpoint
=
827 port0
->bulk_in_endpointAddress
;
828 edge_serial
->read_urb
= port0
->read_urb
;
829 edge_serial
->bulk_out_endpoint
=
830 port0
->bulk_out_endpointAddress
;
832 /* set up our interrupt urb */
833 usb_fill_int_urb(edge_serial
->interrupt_read_urb
,
835 usb_rcvintpipe(serial
->dev
,
836 port0
->interrupt_in_endpointAddress
),
837 port0
->interrupt_in_buffer
,
838 edge_serial
->interrupt_read_urb
->transfer_buffer_length
,
839 edge_interrupt_callback
, edge_serial
,
840 edge_serial
->interrupt_read_urb
->interval
);
842 /* set up our bulk in urb */
843 usb_fill_bulk_urb(edge_serial
->read_urb
, serial
->dev
,
844 usb_rcvbulkpipe(serial
->dev
,
845 port0
->bulk_in_endpointAddress
),
846 port0
->bulk_in_buffer
,
847 edge_serial
->read_urb
->transfer_buffer_length
,
848 edge_bulk_in_callback
, edge_serial
);
849 edge_serial
->read_in_progress
= false;
851 /* start interrupt read for this edgeport
852 * this interrupt will continue as long
853 * as the edgeport is connected */
854 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
,
857 dev_err(dev
, "%s - Error %d submitting control urb\n",
862 /* initialize our wait queues */
863 init_waitqueue_head(&edge_port
->wait_open
);
864 init_waitqueue_head(&edge_port
->wait_chase
);
865 init_waitqueue_head(&edge_port
->wait_command
);
867 /* initialize our port settings */
868 edge_port
->txCredits
= 0; /* Can't send any data yet */
869 /* Must always set this bit to enable ints! */
870 edge_port
->shadowMCR
= MCR_MASTER_IE
;
871 edge_port
->chaseResponsePending
= false;
873 /* send a open port command */
874 edge_port
->openPending
= true;
875 edge_port
->open
= false;
876 response
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_OPEN_PORT
, 0);
879 dev_err(dev
, "%s - error sending open port command\n", __func__
);
880 edge_port
->openPending
= false;
884 /* now wait for the port to be completely opened */
885 wait_event_timeout(edge_port
->wait_open
, !edge_port
->openPending
,
888 if (!edge_port
->open
) {
890 dev_dbg(dev
, "%s - open timedout\n", __func__
);
891 edge_port
->openPending
= false;
895 /* create the txfifo */
896 edge_port
->txfifo
.head
= 0;
897 edge_port
->txfifo
.tail
= 0;
898 edge_port
->txfifo
.count
= 0;
899 edge_port
->txfifo
.size
= edge_port
->maxTxCredits
;
900 edge_port
->txfifo
.fifo
= kmalloc(edge_port
->maxTxCredits
, GFP_KERNEL
);
902 if (!edge_port
->txfifo
.fifo
) {
903 dev_dbg(dev
, "%s - no memory\n", __func__
);
908 /* Allocate a URB for the write */
909 edge_port
->write_urb
= usb_alloc_urb(0, GFP_KERNEL
);
910 edge_port
->write_in_progress
= false;
912 if (!edge_port
->write_urb
) {
913 dev_dbg(dev
, "%s - no memory\n", __func__
);
918 dev_dbg(dev
, "%s(%d) - Initialize TX fifo to %d bytes\n",
919 __func__
, port
->number
, edge_port
->maxTxCredits
);
925 /************************************************************************
927 * block_until_chase_response
929 * This function will block the close until one of the following:
930 * 1. Response to our Chase comes from Edgeport
931 * 2. A timeout of 10 seconds without activity has expired
932 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
934 ************************************************************************/
935 static void block_until_chase_response(struct edgeport_port
*edge_port
)
937 struct device
*dev
= &edge_port
->port
->dev
;
944 /* Save Last credits */
945 lastCredits
= edge_port
->txCredits
;
947 /* Did we get our Chase response */
948 if (!edge_port
->chaseResponsePending
) {
949 dev_dbg(dev
, "%s - Got Chase Response\n", __func__
);
951 /* did we get all of our credit back? */
952 if (edge_port
->txCredits
== edge_port
->maxTxCredits
) {
953 dev_dbg(dev
, "%s - Got all credits\n", __func__
);
958 /* Block the thread for a while */
959 prepare_to_wait(&edge_port
->wait_chase
, &wait
,
960 TASK_UNINTERRUPTIBLE
);
961 schedule_timeout(timeout
);
962 finish_wait(&edge_port
->wait_chase
, &wait
);
964 if (lastCredits
== edge_port
->txCredits
) {
965 /* No activity.. count down. */
968 edge_port
->chaseResponsePending
= false;
969 dev_dbg(dev
, "%s - Chase TIMEOUT\n", __func__
);
973 /* Reset timeout value back to 10 seconds */
974 dev_dbg(dev
, "%s - Last %d, Current %d\n", __func__
,
975 lastCredits
, edge_port
->txCredits
);
982 /************************************************************************
984 * block_until_tx_empty
986 * This function will block the close until one of the following:
988 * 2. The edgeport has stopped
989 * 3. A timeout of 3 seconds without activity has expired
991 ************************************************************************/
992 static void block_until_tx_empty(struct edgeport_port
*edge_port
)
994 struct device
*dev
= &edge_port
->port
->dev
;
996 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1002 /* Save Last count */
1003 lastCount
= fifo
->count
;
1005 /* Is the Edgeport Buffer empty? */
1006 if (lastCount
== 0) {
1007 dev_dbg(dev
, "%s - TX Buffer Empty\n", __func__
);
1011 /* Block the thread for a while */
1012 prepare_to_wait(&edge_port
->wait_chase
, &wait
,
1013 TASK_UNINTERRUPTIBLE
);
1014 schedule_timeout(timeout
);
1015 finish_wait(&edge_port
->wait_chase
, &wait
);
1017 dev_dbg(dev
, "%s wait\n", __func__
);
1019 if (lastCount
== fifo
->count
) {
1020 /* No activity.. count down. */
1023 dev_dbg(dev
, "%s - TIMEOUT\n", __func__
);
1027 /* Reset timeout value back to seconds */
1034 /*****************************************************************************
1036 * this function is called by the tty driver when a port is closed
1037 *****************************************************************************/
1038 static void edge_close(struct usb_serial_port
*port
)
1040 struct edgeport_serial
*edge_serial
;
1041 struct edgeport_port
*edge_port
;
1044 edge_serial
= usb_get_serial_data(port
->serial
);
1045 edge_port
= usb_get_serial_port_data(port
);
1046 if (edge_serial
== NULL
|| edge_port
== NULL
)
1049 /* block until tx is empty */
1050 block_until_tx_empty(edge_port
);
1052 edge_port
->closePending
= true;
1054 if ((!edge_serial
->is_epic
) ||
1055 ((edge_serial
->is_epic
) &&
1056 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1057 /* flush and chase */
1058 edge_port
->chaseResponsePending
= true;
1060 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__
);
1061 status
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1063 /* block until chase finished */
1064 block_until_chase_response(edge_port
);
1066 edge_port
->chaseResponsePending
= false;
1069 if ((!edge_serial
->is_epic
) ||
1070 ((edge_serial
->is_epic
) &&
1071 (edge_serial
->epic_descriptor
.Supports
.IOSPClose
))) {
1072 /* close the port */
1073 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__
);
1074 send_iosp_ext_cmd(edge_port
, IOSP_CMD_CLOSE_PORT
, 0);
1077 /* port->close = true; */
1078 edge_port
->closePending
= false;
1079 edge_port
->open
= false;
1080 edge_port
->openPending
= false;
1082 usb_kill_urb(edge_port
->write_urb
);
1084 if (edge_port
->write_urb
) {
1085 /* if this urb had a transfer buffer already
1086 (old transfer) free it */
1087 kfree(edge_port
->write_urb
->transfer_buffer
);
1088 usb_free_urb(edge_port
->write_urb
);
1089 edge_port
->write_urb
= NULL
;
1091 kfree(edge_port
->txfifo
.fifo
);
1092 edge_port
->txfifo
.fifo
= NULL
;
1095 /*****************************************************************************
1097 * this function is called by the tty driver when data should be written
1099 * If successful, we return the number of bytes written, otherwise we
1100 * return a negative error number.
1101 *****************************************************************************/
1102 static int edge_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
1103 const unsigned char *data
, int count
)
1105 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1106 struct TxFifo
*fifo
;
1111 unsigned long flags
;
1113 if (edge_port
== NULL
)
1116 /* get a pointer to the Tx fifo */
1117 fifo
= &edge_port
->txfifo
;
1119 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1121 /* calculate number of bytes to put in fifo */
1122 copySize
= min((unsigned int)count
,
1123 (edge_port
->txCredits
- fifo
->count
));
1125 dev_dbg(&port
->dev
, "%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1126 __func__
, port
->number
, count
,
1127 edge_port
->txCredits
- fifo
->count
, copySize
);
1129 /* catch writes of 0 bytes which the tty driver likes to give us,
1130 and when txCredits is empty */
1131 if (copySize
== 0) {
1132 dev_dbg(&port
->dev
, "%s - copySize = Zero\n", __func__
);
1137 * since we can never overflow the buffer we do not have to check for a
1140 * the copy is done is two parts -- first fill to the end of the buffer
1141 * then copy the reset from the start of the buffer
1143 bytesleft
= fifo
->size
- fifo
->head
;
1144 firsthalf
= min(bytesleft
, copySize
);
1145 dev_dbg(&port
->dev
, "%s - copy %d bytes of %d into fifo \n", __func__
,
1146 firsthalf
, bytesleft
);
1148 /* now copy our data */
1149 memcpy(&fifo
->fifo
[fifo
->head
], data
, firsthalf
);
1150 usb_serial_debug_data(&port
->dev
, __func__
, firsthalf
, &fifo
->fifo
[fifo
->head
]);
1152 /* update the index and size */
1153 fifo
->head
+= firsthalf
;
1154 fifo
->count
+= firsthalf
;
1156 /* wrap the index */
1157 if (fifo
->head
== fifo
->size
)
1160 secondhalf
= copySize
-firsthalf
;
1163 dev_dbg(&port
->dev
, "%s - copy rest of data %d\n", __func__
, secondhalf
);
1164 memcpy(&fifo
->fifo
[fifo
->head
], &data
[firsthalf
], secondhalf
);
1165 usb_serial_debug_data(&port
->dev
, __func__
, secondhalf
, &fifo
->fifo
[fifo
->head
]);
1166 /* update the index and size */
1167 fifo
->count
+= secondhalf
;
1168 fifo
->head
+= secondhalf
;
1169 /* No need to check for wrap since we can not get to end of
1170 * the fifo in this part
1175 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1177 send_more_port_data((struct edgeport_serial
*)
1178 usb_get_serial_data(port
->serial
), edge_port
);
1180 dev_dbg(&port
->dev
, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1181 __func__
, copySize
, edge_port
->txCredits
, fifo
->count
);
1187 /************************************************************************
1189 * send_more_port_data()
1191 * This routine attempts to write additional UART transmit data
1192 * to a port over the USB bulk pipe. It is called (1) when new
1193 * data has been written to a port's TxBuffer from higher layers
1194 * (2) when the peripheral sends us additional TxCredits indicating
1195 * that it can accept more Tx data for a given port; and (3) when
1196 * a bulk write completes successfully and we want to see if we
1197 * can transmit more.
1199 ************************************************************************/
1200 static void send_more_port_data(struct edgeport_serial
*edge_serial
,
1201 struct edgeport_port
*edge_port
)
1203 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1204 struct device
*dev
= &edge_port
->port
->dev
;
1206 unsigned char *buffer
;
1212 unsigned long flags
;
1214 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1216 if (edge_port
->write_in_progress
||
1218 (fifo
->count
== 0)) {
1219 dev_dbg(dev
, "%s(%d) EXIT - fifo %d, PendingWrite = %d\n",
1220 __func__
, edge_port
->port
->number
,
1221 fifo
->count
, edge_port
->write_in_progress
);
1225 /* since the amount of data in the fifo will always fit into the
1226 * edgeport buffer we do not need to check the write length
1228 * Do we have enough credits for this port to make it worthwhile
1229 * to bother queueing a write. If it's too small, say a few bytes,
1230 * it's better to wait for more credits so we can do a larger write.
1232 if (edge_port
->txCredits
< EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port
->maxTxCredits
, EDGE_FW_BULK_MAX_PACKET_SIZE
)) {
1233 dev_dbg(dev
, "%s(%d) Not enough credit - fifo %d TxCredit %d\n",
1234 __func__
, edge_port
->port
->number
, fifo
->count
,
1235 edge_port
->txCredits
);
1239 /* lock this write */
1240 edge_port
->write_in_progress
= true;
1242 /* get a pointer to the write_urb */
1243 urb
= edge_port
->write_urb
;
1245 /* make sure transfer buffer is freed */
1246 kfree(urb
->transfer_buffer
);
1247 urb
->transfer_buffer
= NULL
;
1249 /* build the data header for the buffer and port that we are about
1251 count
= fifo
->count
;
1252 buffer
= kmalloc(count
+2, GFP_ATOMIC
);
1253 if (buffer
== NULL
) {
1254 dev_err_console(edge_port
->port
,
1255 "%s - no more kernel memory...\n", __func__
);
1256 edge_port
->write_in_progress
= false;
1259 buffer
[0] = IOSP_BUILD_DATA_HDR1(edge_port
->port
->number
1260 - edge_port
->port
->serial
->minor
, count
);
1261 buffer
[1] = IOSP_BUILD_DATA_HDR2(edge_port
->port
->number
1262 - edge_port
->port
->serial
->minor
, count
);
1264 /* now copy our data */
1265 bytesleft
= fifo
->size
- fifo
->tail
;
1266 firsthalf
= min(bytesleft
, count
);
1267 memcpy(&buffer
[2], &fifo
->fifo
[fifo
->tail
], firsthalf
);
1268 fifo
->tail
+= firsthalf
;
1269 fifo
->count
-= firsthalf
;
1270 if (fifo
->tail
== fifo
->size
)
1273 secondhalf
= count
-firsthalf
;
1275 memcpy(&buffer
[2+firsthalf
], &fifo
->fifo
[fifo
->tail
],
1277 fifo
->tail
+= secondhalf
;
1278 fifo
->count
-= secondhalf
;
1282 usb_serial_debug_data(&edge_port
->port
->dev
, __func__
, count
, &buffer
[2]);
1284 /* fill up the urb with all of our data and submit it */
1285 usb_fill_bulk_urb(urb
, edge_serial
->serial
->dev
,
1286 usb_sndbulkpipe(edge_serial
->serial
->dev
,
1287 edge_serial
->bulk_out_endpoint
),
1289 edge_bulk_out_data_callback
, edge_port
);
1291 /* decrement the number of credits we have by the number we just sent */
1292 edge_port
->txCredits
-= count
;
1293 edge_port
->port
->icount
.tx
+= count
;
1295 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
1297 /* something went wrong */
1298 dev_err_console(edge_port
->port
,
1299 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1301 edge_port
->write_in_progress
= false;
1303 /* revert the credits as something bad happened. */
1304 edge_port
->txCredits
+= count
;
1305 edge_port
->port
->icount
.tx
-= count
;
1307 dev_dbg(dev
, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1308 __func__
, count
, edge_port
->txCredits
, fifo
->count
);
1311 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1315 /*****************************************************************************
1317 * this function is called by the tty driver when it wants to know how
1318 * many bytes of data we can accept for a specific port. If successful,
1319 * we return the amount of room that we have for this port (the txCredits)
1320 * otherwise we return a negative error number.
1321 *****************************************************************************/
1322 static int edge_write_room(struct tty_struct
*tty
)
1324 struct usb_serial_port
*port
= tty
->driver_data
;
1325 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1327 unsigned long flags
;
1329 if (edge_port
== NULL
)
1331 if (edge_port
->closePending
)
1334 if (!edge_port
->open
) {
1335 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1339 /* total of both buffers is still txCredit */
1340 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1341 room
= edge_port
->txCredits
- edge_port
->txfifo
.count
;
1342 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1344 dev_dbg(&port
->dev
, "%s - returns %d\n", __func__
, room
);
1349 /*****************************************************************************
1350 * edge_chars_in_buffer
1351 * this function is called by the tty driver when it wants to know how
1352 * many bytes of data we currently have outstanding in the port (data that
1353 * has been written, but hasn't made it out the port yet)
1354 * If successful, we return the number of bytes left to be written in the
1356 * Otherwise we return a negative error number.
1357 *****************************************************************************/
1358 static int edge_chars_in_buffer(struct tty_struct
*tty
)
1360 struct usb_serial_port
*port
= tty
->driver_data
;
1361 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1363 unsigned long flags
;
1365 if (edge_port
== NULL
)
1367 if (edge_port
->closePending
)
1370 if (!edge_port
->open
) {
1371 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1375 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1376 num_chars
= edge_port
->maxTxCredits
- edge_port
->txCredits
+
1377 edge_port
->txfifo
.count
;
1378 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1380 dev_dbg(&port
->dev
, "%s(port %d) - returns %d\n", __func__
,
1381 port
->number
, num_chars
);
1388 /*****************************************************************************
1390 * this function is called by the tty driver when it wants to stop the data
1391 * being read from the port.
1392 *****************************************************************************/
1393 static void edge_throttle(struct tty_struct
*tty
)
1395 struct usb_serial_port
*port
= tty
->driver_data
;
1396 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1399 if (edge_port
== NULL
)
1402 if (!edge_port
->open
) {
1403 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1407 /* if we are implementing XON/XOFF, send the stop character */
1409 unsigned char stop_char
= STOP_CHAR(tty
);
1410 status
= edge_write(tty
, port
, &stop_char
, 1);
1415 /* if we are implementing RTS/CTS, toggle that line */
1416 if (tty
->termios
.c_cflag
& CRTSCTS
) {
1417 edge_port
->shadowMCR
&= ~MCR_RTS
;
1418 status
= send_cmd_write_uart_register(edge_port
, MCR
,
1419 edge_port
->shadowMCR
);
1426 /*****************************************************************************
1428 * this function is called by the tty driver when it wants to resume the
1429 * data being read from the port (called after SerialThrottle is called)
1430 *****************************************************************************/
1431 static void edge_unthrottle(struct tty_struct
*tty
)
1433 struct usb_serial_port
*port
= tty
->driver_data
;
1434 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1437 if (edge_port
== NULL
)
1440 if (!edge_port
->open
) {
1441 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1445 /* if we are implementing XON/XOFF, send the start character */
1447 unsigned char start_char
= START_CHAR(tty
);
1448 status
= edge_write(tty
, port
, &start_char
, 1);
1452 /* if we are implementing RTS/CTS, toggle that line */
1453 if (tty
->termios
.c_cflag
& CRTSCTS
) {
1454 edge_port
->shadowMCR
|= MCR_RTS
;
1455 send_cmd_write_uart_register(edge_port
, MCR
,
1456 edge_port
->shadowMCR
);
1461 /*****************************************************************************
1463 * this function is called by the tty driver when it wants to change
1464 * the termios structure
1465 *****************************************************************************/
1466 static void edge_set_termios(struct tty_struct
*tty
,
1467 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
1469 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1472 cflag
= tty
->termios
.c_cflag
;
1473 dev_dbg(&port
->dev
, "%s - clfag %08x iflag %08x\n", __func__
, tty
->termios
.c_cflag
, tty
->termios
.c_iflag
);
1474 dev_dbg(&port
->dev
, "%s - old clfag %08x old iflag %08x\n", __func__
, old_termios
->c_cflag
, old_termios
->c_iflag
);
1476 if (edge_port
== NULL
)
1479 if (!edge_port
->open
) {
1480 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1484 /* change the port settings to the new ones specified */
1485 change_port_settings(tty
, edge_port
, old_termios
);
1489 /*****************************************************************************
1490 * get_lsr_info - get line status register info
1492 * Purpose: Let user call ioctl() to get info when the UART physically
1493 * is emptied. On bus types like RS485, the transmitter must
1494 * release the bus after transmitting. This must be done when
1495 * the transmit shift register is empty, not be done when the
1496 * transmit holding register is empty. This functionality
1497 * allows an RS485 driver to be written in user space.
1498 *****************************************************************************/
1499 static int get_lsr_info(struct edgeport_port
*edge_port
,
1500 unsigned int __user
*value
)
1502 unsigned int result
= 0;
1503 unsigned long flags
;
1505 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1506 if (edge_port
->maxTxCredits
== edge_port
->txCredits
&&
1507 edge_port
->txfifo
.count
== 0) {
1508 dev_dbg(&edge_port
->port
->dev
, "%s -- Empty\n", __func__
);
1509 result
= TIOCSER_TEMT
;
1511 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1513 if (copy_to_user(value
, &result
, sizeof(int)))
1518 static int edge_tiocmset(struct tty_struct
*tty
,
1519 unsigned int set
, unsigned int clear
)
1521 struct usb_serial_port
*port
= tty
->driver_data
;
1522 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1525 mcr
= edge_port
->shadowMCR
;
1526 if (set
& TIOCM_RTS
)
1528 if (set
& TIOCM_DTR
)
1530 if (set
& TIOCM_LOOP
)
1531 mcr
|= MCR_LOOPBACK
;
1533 if (clear
& TIOCM_RTS
)
1535 if (clear
& TIOCM_DTR
)
1537 if (clear
& TIOCM_LOOP
)
1538 mcr
&= ~MCR_LOOPBACK
;
1540 edge_port
->shadowMCR
= mcr
;
1542 send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1547 static int edge_tiocmget(struct tty_struct
*tty
)
1549 struct usb_serial_port
*port
= tty
->driver_data
;
1550 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1551 unsigned int result
= 0;
1555 msr
= edge_port
->shadowMSR
;
1556 mcr
= edge_port
->shadowMCR
;
1557 result
= ((mcr
& MCR_DTR
) ? TIOCM_DTR
: 0) /* 0x002 */
1558 | ((mcr
& MCR_RTS
) ? TIOCM_RTS
: 0) /* 0x004 */
1559 | ((msr
& EDGEPORT_MSR_CTS
) ? TIOCM_CTS
: 0) /* 0x020 */
1560 | ((msr
& EDGEPORT_MSR_CD
) ? TIOCM_CAR
: 0) /* 0x040 */
1561 | ((msr
& EDGEPORT_MSR_RI
) ? TIOCM_RI
: 0) /* 0x080 */
1562 | ((msr
& EDGEPORT_MSR_DSR
) ? TIOCM_DSR
: 0); /* 0x100 */
1567 static int get_serial_info(struct edgeport_port
*edge_port
,
1568 struct serial_struct __user
*retinfo
)
1570 struct serial_struct tmp
;
1575 memset(&tmp
, 0, sizeof(tmp
));
1577 tmp
.type
= PORT_16550A
;
1578 tmp
.line
= edge_port
->port
->serial
->minor
;
1579 tmp
.port
= edge_port
->port
->number
;
1581 tmp
.flags
= ASYNC_SKIP_TEST
| ASYNC_AUTO_IRQ
;
1582 tmp
.xmit_fifo_size
= edge_port
->maxTxCredits
;
1583 tmp
.baud_base
= 9600;
1584 tmp
.close_delay
= 5*HZ
;
1585 tmp
.closing_wait
= 30*HZ
;
1587 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
1593 /*****************************************************************************
1595 * this function handles any ioctl calls to the driver
1596 *****************************************************************************/
1597 static int edge_ioctl(struct tty_struct
*tty
,
1598 unsigned int cmd
, unsigned long arg
)
1600 struct usb_serial_port
*port
= tty
->driver_data
;
1602 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1604 dev_dbg(&port
->dev
, "%s - port %d, cmd = 0x%x\n", __func__
, port
->number
, cmd
);
1608 dev_dbg(&port
->dev
, "%s (%d) TIOCSERGETLSR\n", __func__
, port
->number
);
1609 return get_lsr_info(edge_port
, (unsigned int __user
*) arg
);
1612 dev_dbg(&port
->dev
, "%s (%d) TIOCGSERIAL\n", __func__
, port
->number
);
1613 return get_serial_info(edge_port
, (struct serial_struct __user
*) arg
);
1615 return -ENOIOCTLCMD
;
1619 /*****************************************************************************
1621 * this function sends a break to the port
1622 *****************************************************************************/
1623 static void edge_break(struct tty_struct
*tty
, int break_state
)
1625 struct usb_serial_port
*port
= tty
->driver_data
;
1626 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1627 struct edgeport_serial
*edge_serial
= usb_get_serial_data(port
->serial
);
1630 if ((!edge_serial
->is_epic
) ||
1631 ((edge_serial
->is_epic
) &&
1632 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1633 /* flush and chase */
1634 edge_port
->chaseResponsePending
= true;
1636 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__
);
1637 status
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1639 /* block until chase finished */
1640 block_until_chase_response(edge_port
);
1642 edge_port
->chaseResponsePending
= false;
1646 if ((!edge_serial
->is_epic
) ||
1647 ((edge_serial
->is_epic
) &&
1648 (edge_serial
->epic_descriptor
.Supports
.IOSPSetClrBreak
))) {
1649 if (break_state
== -1) {
1650 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__
);
1651 status
= send_iosp_ext_cmd(edge_port
,
1652 IOSP_CMD_SET_BREAK
, 0);
1654 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__
);
1655 status
= send_iosp_ext_cmd(edge_port
,
1656 IOSP_CMD_CLEAR_BREAK
, 0);
1659 dev_dbg(&port
->dev
, "%s - error sending break set/clear command.\n",
1665 /*****************************************************************************
1667 * this function handles the data received on the bulk in pipe.
1668 *****************************************************************************/
1669 static void process_rcvd_data(struct edgeport_serial
*edge_serial
,
1670 unsigned char *buffer
, __u16 bufferLength
)
1672 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
1673 struct usb_serial_port
*port
;
1674 struct edgeport_port
*edge_port
;
1675 __u16 lastBufferLength
;
1678 lastBufferLength
= bufferLength
+ 1;
1680 while (bufferLength
> 0) {
1681 /* failsafe incase we get a message that we don't understand */
1682 if (lastBufferLength
== bufferLength
) {
1683 dev_dbg(dev
, "%s - stuck in loop, exiting it.\n", __func__
);
1686 lastBufferLength
= bufferLength
;
1688 switch (edge_serial
->rxState
) {
1690 edge_serial
->rxHeader1
= *buffer
;
1694 if (bufferLength
== 0) {
1695 edge_serial
->rxState
= EXPECT_HDR2
;
1698 /* otherwise, drop on through */
1700 edge_serial
->rxHeader2
= *buffer
;
1704 dev_dbg(dev
, "%s - Hdr1=%02X Hdr2=%02X\n", __func__
,
1705 edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1706 /* Process depending on whether this header is
1709 if (IS_CMD_STAT_HDR(edge_serial
->rxHeader1
)) {
1710 /* Decode this status header and go to
1711 * EXPECT_HDR1 (if we can process the status
1712 * with only 2 bytes), or go to EXPECT_HDR3 to
1713 * get the third byte. */
1714 edge_serial
->rxPort
=
1715 IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1716 edge_serial
->rxStatusCode
=
1717 IOSP_GET_STATUS_CODE(
1718 edge_serial
->rxHeader1
);
1720 if (!IOSP_STATUS_IS_2BYTE(
1721 edge_serial
->rxStatusCode
)) {
1722 /* This status needs additional bytes.
1723 * Save what we have and then wait for
1726 edge_serial
->rxStatusParam
1727 = edge_serial
->rxHeader2
;
1728 edge_serial
->rxState
= EXPECT_HDR3
;
1731 /* We have all the header bytes, process the
1733 process_rcvd_status(edge_serial
,
1734 edge_serial
->rxHeader2
, 0);
1735 edge_serial
->rxState
= EXPECT_HDR1
;
1738 edge_serial
->rxPort
=
1739 IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1740 edge_serial
->rxBytesRemaining
=
1741 IOSP_GET_HDR_DATA_LEN(
1742 edge_serial
->rxHeader1
,
1743 edge_serial
->rxHeader2
);
1744 dev_dbg(dev
, "%s - Data for Port %u Len %u\n",
1746 edge_serial
->rxPort
,
1747 edge_serial
->rxBytesRemaining
);
1749 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1750 * ASSERT(DevExt->RxBytesRemaining <
1751 * IOSP_MAX_DATA_LENGTH);
1754 if (bufferLength
== 0) {
1755 edge_serial
->rxState
= EXPECT_DATA
;
1758 /* Else, drop through */
1760 case EXPECT_DATA
: /* Expect data */
1761 if (bufferLength
< edge_serial
->rxBytesRemaining
) {
1762 rxLen
= bufferLength
;
1763 /* Expect data to start next buffer */
1764 edge_serial
->rxState
= EXPECT_DATA
;
1766 /* BufLen >= RxBytesRemaining */
1767 rxLen
= edge_serial
->rxBytesRemaining
;
1768 /* Start another header next time */
1769 edge_serial
->rxState
= EXPECT_HDR1
;
1772 bufferLength
-= rxLen
;
1773 edge_serial
->rxBytesRemaining
-= rxLen
;
1775 /* spit this data back into the tty driver if this
1778 port
= edge_serial
->serial
->port
[
1779 edge_serial
->rxPort
];
1780 edge_port
= usb_get_serial_port_data(port
);
1781 if (edge_port
->open
) {
1782 dev_dbg(dev
, "%s - Sending %d bytes to TTY for port %d\n",
1784 edge_serial
->rxPort
);
1785 edge_tty_recv(edge_port
->port
, buffer
,
1787 edge_port
->port
->icount
.rx
+= rxLen
;
1793 case EXPECT_HDR3
: /* Expect 3rd byte of status header */
1794 edge_serial
->rxHeader3
= *buffer
;
1798 /* We have all the header bytes, process the
1800 process_rcvd_status(edge_serial
,
1801 edge_serial
->rxStatusParam
,
1802 edge_serial
->rxHeader3
);
1803 edge_serial
->rxState
= EXPECT_HDR1
;
1810 /*****************************************************************************
1811 * process_rcvd_status
1812 * this function handles the any status messages received on the
1814 *****************************************************************************/
1815 static void process_rcvd_status(struct edgeport_serial
*edge_serial
,
1816 __u8 byte2
, __u8 byte3
)
1818 struct usb_serial_port
*port
;
1819 struct edgeport_port
*edge_port
;
1820 struct tty_struct
*tty
;
1822 __u8 code
= edge_serial
->rxStatusCode
;
1824 /* switch the port pointer to the one being currently talked about */
1825 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1826 edge_port
= usb_get_serial_port_data(port
);
1827 if (edge_port
== NULL
) {
1828 dev_err(&edge_serial
->serial
->dev
->dev
,
1829 "%s - edge_port == NULL for port %d\n",
1830 __func__
, edge_serial
->rxPort
);
1835 if (code
== IOSP_EXT_STATUS
) {
1837 case IOSP_EXT_STATUS_CHASE_RSP
:
1838 /* we want to do EXT status regardless of port
1840 dev_dbg(dev
, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1841 __func__
, edge_serial
->rxPort
, byte3
);
1842 /* Currently, the only EXT_STATUS is Chase, so process
1843 * here instead of one more call to one more subroutine
1844 * If/when more EXT_STATUS, there'll be more work to do
1845 * Also, we currently clear flag and close the port
1846 * regardless of content of above's Byte3.
1847 * We could choose to do something else when Byte3 says
1848 * Timeout on Chase from Edgeport, like wait longer in
1849 * block_until_chase_response, but for now we don't.
1851 edge_port
->chaseResponsePending
= false;
1852 wake_up(&edge_port
->wait_chase
);
1855 case IOSP_EXT_STATUS_RX_CHECK_RSP
:
1856 dev_dbg(dev
, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1857 __func__
, edge_serial
->rxPort
, byte3
);
1858 /* Port->RxCheckRsp = true; */
1863 if (code
== IOSP_STATUS_OPEN_RSP
) {
1864 edge_port
->txCredits
= GET_TX_BUFFER_SIZE(byte3
);
1865 edge_port
->maxTxCredits
= edge_port
->txCredits
;
1866 dev_dbg(dev
, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1867 __func__
, edge_serial
->rxPort
, byte2
, edge_port
->txCredits
);
1868 handle_new_msr(edge_port
, byte2
);
1870 /* send the current line settings to the port so we are
1871 in sync with any further termios calls */
1872 tty
= tty_port_tty_get(&edge_port
->port
->port
);
1874 change_port_settings(tty
,
1875 edge_port
, &tty
->termios
);
1879 /* we have completed the open */
1880 edge_port
->openPending
= false;
1881 edge_port
->open
= true;
1882 wake_up(&edge_port
->wait_open
);
1886 /* If port is closed, silently discard all rcvd status. We can
1887 * have cases where buffered status is received AFTER the close
1888 * port command is sent to the Edgeport.
1890 if (!edge_port
->open
|| edge_port
->closePending
)
1894 /* Not currently sent by Edgeport */
1895 case IOSP_STATUS_LSR
:
1896 dev_dbg(dev
, "%s - Port %u LSR Status = %02x\n",
1897 __func__
, edge_serial
->rxPort
, byte2
);
1898 handle_new_lsr(edge_port
, false, byte2
, 0);
1901 case IOSP_STATUS_LSR_DATA
:
1902 dev_dbg(dev
, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1903 __func__
, edge_serial
->rxPort
, byte2
, byte3
);
1904 /* byte2 is LSR Register */
1905 /* byte3 is broken data byte */
1906 handle_new_lsr(edge_port
, true, byte2
, byte3
);
1909 * case IOSP_EXT_4_STATUS:
1910 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1911 * __func__, edge_serial->rxPort, byte2, byte3);
1914 case IOSP_STATUS_MSR
:
1915 dev_dbg(dev
, "%s - Port %u MSR Status = %02x\n",
1916 __func__
, edge_serial
->rxPort
, byte2
);
1918 * Process this new modem status and generate appropriate
1919 * events, etc, based on the new status. This routine
1920 * also saves the MSR in Port->ShadowMsr.
1922 handle_new_msr(edge_port
, byte2
);
1926 dev_dbg(dev
, "%s - Unrecognized IOSP status code %u\n", __func__
, code
);
1932 /*****************************************************************************
1934 * this function passes data on to the tty flip buffer
1935 *****************************************************************************/
1936 static void edge_tty_recv(struct usb_serial_port
*port
, unsigned char *data
,
1941 cnt
= tty_insert_flip_string(&port
->port
, data
, length
);
1943 dev_err(&port
->dev
, "%s - dropping data, %d bytes lost\n",
1944 __func__
, length
- cnt
);
1949 tty_flip_buffer_push(&port
->port
);
1953 /*****************************************************************************
1955 * this function handles any change to the msr register for a port.
1956 *****************************************************************************/
1957 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
)
1959 struct async_icount
*icount
;
1961 if (newMsr
& (EDGEPORT_MSR_DELTA_CTS
| EDGEPORT_MSR_DELTA_DSR
|
1962 EDGEPORT_MSR_DELTA_RI
| EDGEPORT_MSR_DELTA_CD
)) {
1963 icount
= &edge_port
->port
->icount
;
1965 /* update input line counters */
1966 if (newMsr
& EDGEPORT_MSR_DELTA_CTS
)
1968 if (newMsr
& EDGEPORT_MSR_DELTA_DSR
)
1970 if (newMsr
& EDGEPORT_MSR_DELTA_CD
)
1972 if (newMsr
& EDGEPORT_MSR_DELTA_RI
)
1974 wake_up_interruptible(&edge_port
->port
->port
.delta_msr_wait
);
1977 /* Save the new modem status */
1978 edge_port
->shadowMSR
= newMsr
& 0xf0;
1982 /*****************************************************************************
1984 * this function handles any change to the lsr register for a port.
1985 *****************************************************************************/
1986 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
,
1987 __u8 lsr
, __u8 data
)
1989 __u8 newLsr
= (__u8
) (lsr
& (__u8
)
1990 (LSR_OVER_ERR
| LSR_PAR_ERR
| LSR_FRM_ERR
| LSR_BREAK
));
1991 struct async_icount
*icount
;
1993 edge_port
->shadowLSR
= lsr
;
1995 if (newLsr
& LSR_BREAK
) {
1997 * Parity and Framing errors only count if they
1998 * occur exclusive of a break being
2001 newLsr
&= (__u8
)(LSR_OVER_ERR
| LSR_BREAK
);
2004 /* Place LSR data byte into Rx buffer */
2006 edge_tty_recv(edge_port
->port
, &data
, 1);
2008 /* update input line counters */
2009 icount
= &edge_port
->port
->icount
;
2010 if (newLsr
& LSR_BREAK
)
2012 if (newLsr
& LSR_OVER_ERR
)
2014 if (newLsr
& LSR_PAR_ERR
)
2016 if (newLsr
& LSR_FRM_ERR
)
2021 /****************************************************************************
2023 * writes a number of bytes to the Edgeport device's sram starting at the
2025 * If successful returns the number of bytes written, otherwise it returns
2026 * a negative error number of the problem.
2027 ****************************************************************************/
2028 static int sram_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
2029 __u16 length
, const __u8
*data
)
2032 __u16 current_length
;
2033 unsigned char *transfer_buffer
;
2035 dev_dbg(&serial
->dev
->dev
, "%s - %x, %x, %d\n", __func__
, extAddr
, addr
, length
);
2037 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2038 if (!transfer_buffer
) {
2039 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n",
2044 /* need to split these writes up into 64 byte chunks */
2046 while (length
> 0) {
2048 current_length
= 64;
2050 current_length
= length
;
2052 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
2053 memcpy(transfer_buffer
, data
, current_length
);
2054 result
= usb_control_msg(serial
->dev
,
2055 usb_sndctrlpipe(serial
->dev
, 0),
2056 USB_REQUEST_ION_WRITE_RAM
,
2057 0x40, addr
, extAddr
, transfer_buffer
,
2058 current_length
, 300);
2061 length
-= current_length
;
2062 addr
+= current_length
;
2063 data
+= current_length
;
2066 kfree(transfer_buffer
);
2071 /****************************************************************************
2073 * writes a number of bytes to the Edgeport device's ROM starting at the
2075 * If successful returns the number of bytes written, otherwise it returns
2076 * a negative error number of the problem.
2077 ****************************************************************************/
2078 static int rom_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
2079 __u16 length
, const __u8
*data
)
2082 __u16 current_length
;
2083 unsigned char *transfer_buffer
;
2085 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2086 if (!transfer_buffer
) {
2087 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n",
2092 /* need to split these writes up into 64 byte chunks */
2094 while (length
> 0) {
2096 current_length
= 64;
2098 current_length
= length
;
2099 memcpy(transfer_buffer
, data
, current_length
);
2100 result
= usb_control_msg(serial
->dev
,
2101 usb_sndctrlpipe(serial
->dev
, 0),
2102 USB_REQUEST_ION_WRITE_ROM
, 0x40,
2104 transfer_buffer
, current_length
, 300);
2107 length
-= current_length
;
2108 addr
+= current_length
;
2109 data
+= current_length
;
2112 kfree(transfer_buffer
);
2117 /****************************************************************************
2119 * reads a number of bytes from the Edgeport device starting at the given
2121 * If successful returns the number of bytes read, otherwise it returns
2122 * a negative error number of the problem.
2123 ****************************************************************************/
2124 static int rom_read(struct usb_serial
*serial
, __u16 extAddr
,
2125 __u16 addr
, __u16 length
, __u8
*data
)
2128 __u16 current_length
;
2129 unsigned char *transfer_buffer
;
2131 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2132 if (!transfer_buffer
) {
2133 dev_err(&serial
->dev
->dev
,
2134 "%s - kmalloc(%d) failed.\n", __func__
, 64);
2138 /* need to split these reads up into 64 byte chunks */
2140 while (length
> 0) {
2142 current_length
= 64;
2144 current_length
= length
;
2145 result
= usb_control_msg(serial
->dev
,
2146 usb_rcvctrlpipe(serial
->dev
, 0),
2147 USB_REQUEST_ION_READ_ROM
,
2148 0xC0, addr
, extAddr
, transfer_buffer
,
2149 current_length
, 300);
2152 memcpy(data
, transfer_buffer
, current_length
);
2153 length
-= current_length
;
2154 addr
+= current_length
;
2155 data
+= current_length
;
2158 kfree(transfer_buffer
);
2163 /****************************************************************************
2165 * Is used to send a IOSP message to the Edgeport device
2166 ****************************************************************************/
2167 static int send_iosp_ext_cmd(struct edgeport_port
*edge_port
,
2168 __u8 command
, __u8 param
)
2170 unsigned char *buffer
;
2171 unsigned char *currentCommand
;
2175 buffer
= kmalloc(10, GFP_ATOMIC
);
2177 dev_err(&edge_port
->port
->dev
,
2178 "%s - kmalloc(%d) failed.\n", __func__
, 10);
2182 currentCommand
= buffer
;
2184 MAKE_CMD_EXT_CMD(¤tCommand
, &length
,
2185 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2188 status
= write_cmd_usb(edge_port
, buffer
, length
);
2190 /* something bad happened, let's free up the memory */
2198 /*****************************************************************************
2200 * this function writes the given buffer out to the bulk write endpoint.
2201 *****************************************************************************/
2202 static int write_cmd_usb(struct edgeport_port
*edge_port
,
2203 unsigned char *buffer
, int length
)
2205 struct edgeport_serial
*edge_serial
=
2206 usb_get_serial_data(edge_port
->port
->serial
);
2207 struct device
*dev
= &edge_port
->port
->dev
;
2211 usb_serial_debug_data(dev
, __func__
, length
, buffer
);
2213 /* Allocate our next urb */
2214 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
2218 atomic_inc(&CmdUrbs
);
2219 dev_dbg(dev
, "%s - ALLOCATE URB %p (outstanding %d)\n",
2220 __func__
, urb
, atomic_read(&CmdUrbs
));
2222 usb_fill_bulk_urb(urb
, edge_serial
->serial
->dev
,
2223 usb_sndbulkpipe(edge_serial
->serial
->dev
,
2224 edge_serial
->bulk_out_endpoint
),
2225 buffer
, length
, edge_bulk_out_cmd_callback
, edge_port
);
2227 edge_port
->commandPending
= true;
2228 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
2231 /* something went wrong */
2232 dev_err(dev
, "%s - usb_submit_urb(write command) failed, status = %d\n",
2236 atomic_dec(&CmdUrbs
);
2241 wait_event(&edge_port
->wait_command
, !edge_port
->commandPending
);
2243 if (edge_port
->commandPending
) {
2244 /* command timed out */
2245 dev_dbg(dev
, "%s - command timed out\n", __func__
);
2253 /*****************************************************************************
2254 * send_cmd_write_baud_rate
2255 * this function sends the proper command to change the baud rate of the
2257 *****************************************************************************/
2258 static int send_cmd_write_baud_rate(struct edgeport_port
*edge_port
,
2261 struct edgeport_serial
*edge_serial
=
2262 usb_get_serial_data(edge_port
->port
->serial
);
2263 struct device
*dev
= &edge_port
->port
->dev
;
2264 unsigned char *cmdBuffer
;
2265 unsigned char *currCmd
;
2269 unsigned char number
=
2270 edge_port
->port
->number
- edge_port
->port
->serial
->minor
;
2272 if (edge_serial
->is_epic
&&
2273 !edge_serial
->epic_descriptor
.Supports
.IOSPSetBaudRate
) {
2274 dev_dbg(dev
, "SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d\n",
2275 edge_port
->port
->number
, baudRate
);
2279 dev_dbg(dev
, "%s - port = %d, baud = %d\n", __func__
,
2280 edge_port
->port
->number
, baudRate
);
2282 status
= calc_baud_rate_divisor(dev
, baudRate
, &divisor
);
2284 dev_err(dev
, "%s - bad baud rate\n", __func__
);
2288 /* Alloc memory for the string of commands. */
2289 cmdBuffer
= kmalloc(0x100, GFP_ATOMIC
);
2291 dev_err(dev
, "%s - kmalloc(%d) failed.\n", __func__
, 0x100);
2294 currCmd
= cmdBuffer
;
2296 /* Enable access to divisor latch */
2297 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, LCR
, LCR_DL_ENABLE
);
2299 /* Write the divisor itself */
2300 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, DLL
, LOW8(divisor
));
2301 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, DLM
, HIGH8(divisor
));
2303 /* Restore original value to disable access to divisor latch */
2304 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, LCR
,
2305 edge_port
->shadowLCR
);
2307 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2309 /* something bad happened, let's free up the memory */
2317 /*****************************************************************************
2318 * calc_baud_rate_divisor
2319 * this function calculates the proper baud rate divisor for the specified
2321 *****************************************************************************/
2322 static int calc_baud_rate_divisor(struct device
*dev
, int baudrate
, int *divisor
)
2327 for (i
= 0; i
< ARRAY_SIZE(divisor_table
); i
++) {
2328 if (divisor_table
[i
].BaudRate
== baudrate
) {
2329 *divisor
= divisor_table
[i
].Divisor
;
2334 /* We have tried all of the standard baud rates
2335 * lets try to calculate the divisor for this baud rate
2336 * Make sure the baud rate is reasonable */
2337 if (baudrate
> 50 && baudrate
< 230400) {
2339 custom
= (__u16
)((230400L + baudrate
/2) / baudrate
);
2343 dev_dbg(dev
, "%s - Baud %d = %d\n", __func__
, baudrate
, custom
);
2351 /*****************************************************************************
2352 * send_cmd_write_uart_register
2353 * this function builds up a uart register message and sends to the device.
2354 *****************************************************************************/
2355 static int send_cmd_write_uart_register(struct edgeport_port
*edge_port
,
2356 __u8 regNum
, __u8 regValue
)
2358 struct edgeport_serial
*edge_serial
=
2359 usb_get_serial_data(edge_port
->port
->serial
);
2360 struct device
*dev
= &edge_port
->port
->dev
;
2361 unsigned char *cmdBuffer
;
2362 unsigned char *currCmd
;
2363 unsigned long cmdLen
= 0;
2366 dev_dbg(dev
, "%s - write to %s register 0x%02x\n",
2367 (regNum
== MCR
) ? "MCR" : "LCR", __func__
, regValue
);
2369 if (edge_serial
->is_epic
&&
2370 !edge_serial
->epic_descriptor
.Supports
.IOSPWriteMCR
&&
2372 dev_dbg(dev
, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2376 if (edge_serial
->is_epic
&&
2377 !edge_serial
->epic_descriptor
.Supports
.IOSPWriteLCR
&&
2379 dev_dbg(dev
, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2383 /* Alloc memory for the string of commands. */
2384 cmdBuffer
= kmalloc(0x10, GFP_ATOMIC
);
2385 if (cmdBuffer
== NULL
)
2388 currCmd
= cmdBuffer
;
2390 /* Build a cmd in the buffer to write the given register */
2391 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
,
2392 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2395 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2397 /* something bad happened, let's free up the memory */
2405 /*****************************************************************************
2406 * change_port_settings
2407 * This routine is called to set the UART on the device to match the
2408 * specified new settings.
2409 *****************************************************************************/
2411 static void change_port_settings(struct tty_struct
*tty
,
2412 struct edgeport_port
*edge_port
, struct ktermios
*old_termios
)
2414 struct device
*dev
= &edge_port
->port
->dev
;
2415 struct edgeport_serial
*edge_serial
=
2416 usb_get_serial_data(edge_port
->port
->serial
);
2427 dev_dbg(dev
, "%s - port %d\n", __func__
, edge_port
->port
->number
);
2429 if (!edge_port
->open
&&
2430 !edge_port
->openPending
) {
2431 dev_dbg(dev
, "%s - port not opened\n", __func__
);
2435 cflag
= tty
->termios
.c_cflag
;
2437 switch (cflag
& CSIZE
) {
2439 lData
= LCR_BITS_5
; mask
= 0x1f;
2440 dev_dbg(dev
, "%s - data bits = 5\n", __func__
);
2443 lData
= LCR_BITS_6
; mask
= 0x3f;
2444 dev_dbg(dev
, "%s - data bits = 6\n", __func__
);
2447 lData
= LCR_BITS_7
; mask
= 0x7f;
2448 dev_dbg(dev
, "%s - data bits = 7\n", __func__
);
2453 dev_dbg(dev
, "%s - data bits = 8\n", __func__
);
2457 lParity
= LCR_PAR_NONE
;
2458 if (cflag
& PARENB
) {
2459 if (cflag
& CMSPAR
) {
2460 if (cflag
& PARODD
) {
2461 lParity
= LCR_PAR_MARK
;
2462 dev_dbg(dev
, "%s - parity = mark\n", __func__
);
2464 lParity
= LCR_PAR_SPACE
;
2465 dev_dbg(dev
, "%s - parity = space\n", __func__
);
2467 } else if (cflag
& PARODD
) {
2468 lParity
= LCR_PAR_ODD
;
2469 dev_dbg(dev
, "%s - parity = odd\n", __func__
);
2471 lParity
= LCR_PAR_EVEN
;
2472 dev_dbg(dev
, "%s - parity = even\n", __func__
);
2475 dev_dbg(dev
, "%s - parity = none\n", __func__
);
2478 if (cflag
& CSTOPB
) {
2480 dev_dbg(dev
, "%s - stop bits = 2\n", __func__
);
2483 dev_dbg(dev
, "%s - stop bits = 1\n", __func__
);
2486 /* figure out the flow control settings */
2487 rxFlow
= txFlow
= 0x00;
2488 if (cflag
& CRTSCTS
) {
2489 rxFlow
|= IOSP_RX_FLOW_RTS
;
2490 txFlow
|= IOSP_TX_FLOW_CTS
;
2491 dev_dbg(dev
, "%s - RTS/CTS is enabled\n", __func__
);
2493 dev_dbg(dev
, "%s - RTS/CTS is disabled\n", __func__
);
2496 /* if we are implementing XON/XOFF, set the start and stop character
2498 if (I_IXOFF(tty
) || I_IXON(tty
)) {
2499 unsigned char stop_char
= STOP_CHAR(tty
);
2500 unsigned char start_char
= START_CHAR(tty
);
2502 if ((!edge_serial
->is_epic
) ||
2503 ((edge_serial
->is_epic
) &&
2504 (edge_serial
->epic_descriptor
.Supports
.IOSPSetXChar
))) {
2505 send_iosp_ext_cmd(edge_port
,
2506 IOSP_CMD_SET_XON_CHAR
, start_char
);
2507 send_iosp_ext_cmd(edge_port
,
2508 IOSP_CMD_SET_XOFF_CHAR
, stop_char
);
2511 /* if we are implementing INBOUND XON/XOFF */
2513 rxFlow
|= IOSP_RX_FLOW_XON_XOFF
;
2514 dev_dbg(dev
, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2515 __func__
, start_char
, stop_char
);
2517 dev_dbg(dev
, "%s - INBOUND XON/XOFF is disabled\n", __func__
);
2520 /* if we are implementing OUTBOUND XON/XOFF */
2522 txFlow
|= IOSP_TX_FLOW_XON_XOFF
;
2523 dev_dbg(dev
, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2524 __func__
, start_char
, stop_char
);
2526 dev_dbg(dev
, "%s - OUTBOUND XON/XOFF is disabled\n", __func__
);
2530 /* Set flow control to the configured value */
2531 if ((!edge_serial
->is_epic
) ||
2532 ((edge_serial
->is_epic
) &&
2533 (edge_serial
->epic_descriptor
.Supports
.IOSPSetRxFlow
)))
2534 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_RX_FLOW
, rxFlow
);
2535 if ((!edge_serial
->is_epic
) ||
2536 ((edge_serial
->is_epic
) &&
2537 (edge_serial
->epic_descriptor
.Supports
.IOSPSetTxFlow
)))
2538 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_TX_FLOW
, txFlow
);
2541 edge_port
->shadowLCR
&= ~(LCR_BITS_MASK
| LCR_STOP_MASK
| LCR_PAR_MASK
);
2542 edge_port
->shadowLCR
|= (lData
| lParity
| lStop
);
2544 edge_port
->validDataMask
= mask
;
2546 /* Send the updated LCR value to the EdgePort */
2547 status
= send_cmd_write_uart_register(edge_port
, LCR
,
2548 edge_port
->shadowLCR
);
2552 /* set up the MCR register and send it to the EdgePort */
2553 edge_port
->shadowMCR
= MCR_MASTER_IE
;
2555 edge_port
->shadowMCR
|= (MCR_DTR
| MCR_RTS
);
2557 status
= send_cmd_write_uart_register(edge_port
, MCR
,
2558 edge_port
->shadowMCR
);
2562 /* Determine divisor based on baud rate */
2563 baud
= tty_get_baud_rate(tty
);
2565 /* pick a default, any default... */
2569 dev_dbg(dev
, "%s - baud rate = %d\n", __func__
, baud
);
2570 status
= send_cmd_write_baud_rate(edge_port
, baud
);
2572 /* Speed change was not possible - put back the old speed */
2573 baud
= tty_termios_baud_rate(old_termios
);
2574 tty_encode_baud_rate(tty
, baud
, baud
);
2579 /****************************************************************************
2581 * Turns a string from Unicode into ASCII.
2582 * Doesn't do a good job with any characters that are outside the normal
2583 * ASCII range, but it's only for debugging...
2584 * NOTE: expects the unicode in LE format
2585 ****************************************************************************/
2586 static void unicode_to_ascii(char *string
, int buflen
,
2587 __le16
*unicode
, int unicode_size
)
2591 if (buflen
<= 0) /* never happens, but... */
2593 --buflen
; /* space for nul */
2595 for (i
= 0; i
< unicode_size
; i
++) {
2598 string
[i
] = (char)(le16_to_cpu(unicode
[i
]));
2604 /****************************************************************************
2605 * get_manufacturing_desc
2606 * reads in the manufacturing descriptor and stores it into the serial
2608 ****************************************************************************/
2609 static void get_manufacturing_desc(struct edgeport_serial
*edge_serial
)
2611 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
2614 dev_dbg(dev
, "getting manufacturer descriptor\n");
2616 response
= rom_read(edge_serial
->serial
,
2617 (EDGE_MANUF_DESC_ADDR
& 0xffff0000) >> 16,
2618 (__u16
)(EDGE_MANUF_DESC_ADDR
& 0x0000ffff),
2619 EDGE_MANUF_DESC_LEN
,
2620 (__u8
*)(&edge_serial
->manuf_descriptor
));
2623 dev_err(dev
, "error in getting manufacturer descriptor\n");
2626 dev_dbg(dev
, "**Manufacturer Descriptor\n");
2627 dev_dbg(dev
, " RomSize: %dK\n",
2628 edge_serial
->manuf_descriptor
.RomSize
);
2629 dev_dbg(dev
, " RamSize: %dK\n",
2630 edge_serial
->manuf_descriptor
.RamSize
);
2631 dev_dbg(dev
, " CpuRev: %d\n",
2632 edge_serial
->manuf_descriptor
.CpuRev
);
2633 dev_dbg(dev
, " BoardRev: %d\n",
2634 edge_serial
->manuf_descriptor
.BoardRev
);
2635 dev_dbg(dev
, " NumPorts: %d\n",
2636 edge_serial
->manuf_descriptor
.NumPorts
);
2637 dev_dbg(dev
, " DescDate: %d/%d/%d\n",
2638 edge_serial
->manuf_descriptor
.DescDate
[0],
2639 edge_serial
->manuf_descriptor
.DescDate
[1],
2640 edge_serial
->manuf_descriptor
.DescDate
[2]+1900);
2641 unicode_to_ascii(string
, sizeof(string
),
2642 edge_serial
->manuf_descriptor
.SerialNumber
,
2643 edge_serial
->manuf_descriptor
.SerNumLength
/2);
2644 dev_dbg(dev
, " SerialNumber: %s\n", string
);
2645 unicode_to_ascii(string
, sizeof(string
),
2646 edge_serial
->manuf_descriptor
.AssemblyNumber
,
2647 edge_serial
->manuf_descriptor
.AssemblyNumLength
/2);
2648 dev_dbg(dev
, " AssemblyNumber: %s\n", string
);
2649 unicode_to_ascii(string
, sizeof(string
),
2650 edge_serial
->manuf_descriptor
.OemAssyNumber
,
2651 edge_serial
->manuf_descriptor
.OemAssyNumLength
/2);
2652 dev_dbg(dev
, " OemAssyNumber: %s\n", string
);
2653 dev_dbg(dev
, " UartType: %d\n",
2654 edge_serial
->manuf_descriptor
.UartType
);
2655 dev_dbg(dev
, " IonPid: %d\n",
2656 edge_serial
->manuf_descriptor
.IonPid
);
2657 dev_dbg(dev
, " IonConfig: %d\n",
2658 edge_serial
->manuf_descriptor
.IonConfig
);
2663 /****************************************************************************
2665 * reads in the bootloader descriptor and stores it into the serial
2667 ****************************************************************************/
2668 static void get_boot_desc(struct edgeport_serial
*edge_serial
)
2670 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
2673 dev_dbg(dev
, "getting boot descriptor\n");
2675 response
= rom_read(edge_serial
->serial
,
2676 (EDGE_BOOT_DESC_ADDR
& 0xffff0000) >> 16,
2677 (__u16
)(EDGE_BOOT_DESC_ADDR
& 0x0000ffff),
2679 (__u8
*)(&edge_serial
->boot_descriptor
));
2682 dev_err(dev
, "error in getting boot descriptor\n");
2684 dev_dbg(dev
, "**Boot Descriptor:\n");
2685 dev_dbg(dev
, " BootCodeLength: %d\n",
2686 le16_to_cpu(edge_serial
->boot_descriptor
.BootCodeLength
));
2687 dev_dbg(dev
, " MajorVersion: %d\n",
2688 edge_serial
->boot_descriptor
.MajorVersion
);
2689 dev_dbg(dev
, " MinorVersion: %d\n",
2690 edge_serial
->boot_descriptor
.MinorVersion
);
2691 dev_dbg(dev
, " BuildNumber: %d\n",
2692 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
2693 dev_dbg(dev
, " Capabilities: 0x%x\n",
2694 le16_to_cpu(edge_serial
->boot_descriptor
.Capabilities
));
2695 dev_dbg(dev
, " UConfig0: %d\n",
2696 edge_serial
->boot_descriptor
.UConfig0
);
2697 dev_dbg(dev
, " UConfig1: %d\n",
2698 edge_serial
->boot_descriptor
.UConfig1
);
2703 /****************************************************************************
2704 * load_application_firmware
2705 * This is called to load the application firmware to the device
2706 ****************************************************************************/
2707 static void load_application_firmware(struct edgeport_serial
*edge_serial
)
2709 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
2710 const struct ihex_binrec
*rec
;
2711 const struct firmware
*fw
;
2712 const char *fw_name
;
2713 const char *fw_info
;
2718 switch (edge_serial
->product_info
.iDownloadFile
) {
2719 case EDGE_DOWNLOAD_FILE_I930
:
2720 fw_info
= "downloading firmware version (930)";
2721 fw_name
= "edgeport/down.fw";
2724 case EDGE_DOWNLOAD_FILE_80251
:
2725 fw_info
= "downloading firmware version (80251)";
2726 fw_name
= "edgeport/down2.fw";
2729 case EDGE_DOWNLOAD_FILE_NONE
:
2730 dev_dbg(dev
, "No download file specified, skipping download\n");
2737 response
= request_ihex_firmware(&fw
, fw_name
,
2738 &edge_serial
->serial
->dev
->dev
);
2740 dev_err(dev
, "Failed to load image \"%s\" err %d\n",
2745 rec
= (const struct ihex_binrec
*)fw
->data
;
2746 build
= (rec
->data
[2] << 8) | rec
->data
[3];
2748 dev_dbg(dev
, "%s %d.%d.%d\n", fw_info
, rec
->data
[0], rec
->data
[1], build
);
2750 edge_serial
->product_info
.FirmwareMajorVersion
= rec
->data
[0];
2751 edge_serial
->product_info
.FirmwareMinorVersion
= rec
->data
[1];
2752 edge_serial
->product_info
.FirmwareBuildNumber
= cpu_to_le16(build
);
2754 for (rec
= ihex_next_binrec(rec
); rec
;
2755 rec
= ihex_next_binrec(rec
)) {
2756 Operaddr
= be32_to_cpu(rec
->addr
);
2757 response
= sram_write(edge_serial
->serial
,
2760 be16_to_cpu(rec
->len
),
2763 dev_err(&edge_serial
->serial
->dev
->dev
,
2764 "sram_write failed (%x, %x, %d)\n",
2765 Operaddr
>> 16, Operaddr
& 0xFFFF,
2766 be16_to_cpu(rec
->len
));
2771 dev_dbg(dev
, "sending exec_dl_code\n");
2772 response
= usb_control_msg (edge_serial
->serial
->dev
,
2773 usb_sndctrlpipe(edge_serial
->serial
->dev
, 0),
2774 USB_REQUEST_ION_EXEC_DL_CODE
,
2775 0x40, 0x4000, 0x0001, NULL
, 0, 3000);
2777 release_firmware(fw
);
2781 /****************************************************************************
2783 ****************************************************************************/
2784 static int edge_startup(struct usb_serial
*serial
)
2786 struct edgeport_serial
*edge_serial
;
2787 struct usb_device
*dev
;
2788 struct device
*ddev
= &serial
->dev
->dev
;
2791 bool interrupt_in_found
;
2793 bool bulk_out_found
;
2794 static __u32 descriptor
[3] = { EDGE_COMPATIBILITY_MASK0
,
2795 EDGE_COMPATIBILITY_MASK1
,
2796 EDGE_COMPATIBILITY_MASK2
};
2800 /* create our private serial structure */
2801 edge_serial
= kzalloc(sizeof(struct edgeport_serial
), GFP_KERNEL
);
2802 if (edge_serial
== NULL
) {
2803 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __func__
);
2806 spin_lock_init(&edge_serial
->es_lock
);
2807 edge_serial
->serial
= serial
;
2808 usb_set_serial_data(serial
, edge_serial
);
2810 /* get the name for the device from the device */
2811 i
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
2812 &edge_serial
->name
[0], MAX_NAME_LEN
+1);
2815 edge_serial
->name
[i
++] = ' ';
2816 usb_string(dev
, dev
->descriptor
.iProduct
,
2817 &edge_serial
->name
[i
], MAX_NAME_LEN
+2 - i
);
2819 dev_info(&serial
->dev
->dev
, "%s detected\n", edge_serial
->name
);
2821 /* Read the epic descriptor */
2822 if (get_epic_descriptor(edge_serial
) <= 0) {
2823 /* memcpy descriptor to Supports structures */
2824 memcpy(&edge_serial
->epic_descriptor
.Supports
, descriptor
,
2825 sizeof(struct edge_compatibility_bits
));
2827 /* get the manufacturing descriptor for this device */
2828 get_manufacturing_desc(edge_serial
);
2830 /* get the boot descriptor */
2831 get_boot_desc(edge_serial
);
2833 get_product_info(edge_serial
);
2836 /* set the number of ports from the manufacturing description */
2837 /* serial->num_ports = serial->product_info.NumPorts; */
2838 if ((!edge_serial
->is_epic
) &&
2839 (edge_serial
->product_info
.NumPorts
!= serial
->num_ports
)) {
2841 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2842 edge_serial
->product_info
.NumPorts
,
2846 dev_dbg(ddev
, "%s - time 1 %ld\n", __func__
, jiffies
);
2848 /* If not an EPiC device */
2849 if (!edge_serial
->is_epic
) {
2850 /* now load the application firmware into this device */
2851 load_application_firmware(edge_serial
);
2853 dev_dbg(ddev
, "%s - time 2 %ld\n", __func__
, jiffies
);
2855 /* Check current Edgeport EEPROM and update if necessary */
2856 update_edgeport_E2PROM(edge_serial
);
2858 dev_dbg(ddev
, "%s - time 3 %ld\n", __func__
, jiffies
);
2860 /* set the configuration to use #1 */
2861 /* dev_dbg(ddev, "set_configuration 1\n"); */
2862 /* usb_set_configuration (dev, 1); */
2864 dev_dbg(ddev
, " FirmwareMajorVersion %d.%d.%d\n",
2865 edge_serial
->product_info
.FirmwareMajorVersion
,
2866 edge_serial
->product_info
.FirmwareMinorVersion
,
2867 le16_to_cpu(edge_serial
->product_info
.FirmwareBuildNumber
));
2869 /* we set up the pointers to the endpoints in the edge_open function,
2870 * as the structures aren't created yet. */
2874 if (edge_serial
->is_epic
) {
2875 /* EPIC thing, set up our interrupt polling now and our read
2876 * urb, so that the device knows it really is connected. */
2877 interrupt_in_found
= bulk_in_found
= bulk_out_found
= false;
2878 for (i
= 0; i
< serial
->interface
->altsetting
[0]
2879 .desc
.bNumEndpoints
; ++i
) {
2880 struct usb_endpoint_descriptor
*endpoint
;
2883 endpoint
= &serial
->interface
->altsetting
[0].
2885 buffer_size
= usb_endpoint_maxp(endpoint
);
2886 if (!interrupt_in_found
&&
2887 (usb_endpoint_is_int_in(endpoint
))) {
2888 /* we found a interrupt in endpoint */
2889 dev_dbg(ddev
, "found interrupt in\n");
2891 /* not set up yet, so do it now */
2892 edge_serial
->interrupt_read_urb
=
2893 usb_alloc_urb(0, GFP_KERNEL
);
2894 if (!edge_serial
->interrupt_read_urb
) {
2895 dev_err(ddev
, "out of memory\n");
2898 edge_serial
->interrupt_in_buffer
=
2899 kmalloc(buffer_size
, GFP_KERNEL
);
2900 if (!edge_serial
->interrupt_in_buffer
) {
2901 dev_err(ddev
, "out of memory\n");
2902 usb_free_urb(edge_serial
->interrupt_read_urb
);
2905 edge_serial
->interrupt_in_endpoint
=
2906 endpoint
->bEndpointAddress
;
2908 /* set up our interrupt urb */
2910 edge_serial
->interrupt_read_urb
,
2913 endpoint
->bEndpointAddress
),
2914 edge_serial
->interrupt_in_buffer
,
2916 edge_interrupt_callback
,
2918 endpoint
->bInterval
);
2920 interrupt_in_found
= true;
2923 if (!bulk_in_found
&&
2924 (usb_endpoint_is_bulk_in(endpoint
))) {
2925 /* we found a bulk in endpoint */
2926 dev_dbg(ddev
, "found bulk in\n");
2928 /* not set up yet, so do it now */
2929 edge_serial
->read_urb
=
2930 usb_alloc_urb(0, GFP_KERNEL
);
2931 if (!edge_serial
->read_urb
) {
2932 dev_err(ddev
, "out of memory\n");
2935 edge_serial
->bulk_in_buffer
=
2936 kmalloc(buffer_size
, GFP_KERNEL
);
2937 if (!edge_serial
->bulk_in_buffer
) {
2938 dev_err(&dev
->dev
, "out of memory\n");
2939 usb_free_urb(edge_serial
->read_urb
);
2942 edge_serial
->bulk_in_endpoint
=
2943 endpoint
->bEndpointAddress
;
2945 /* set up our bulk in urb */
2946 usb_fill_bulk_urb(edge_serial
->read_urb
, dev
,
2947 usb_rcvbulkpipe(dev
,
2948 endpoint
->bEndpointAddress
),
2949 edge_serial
->bulk_in_buffer
,
2950 usb_endpoint_maxp(endpoint
),
2951 edge_bulk_in_callback
,
2953 bulk_in_found
= true;
2956 if (!bulk_out_found
&&
2957 (usb_endpoint_is_bulk_out(endpoint
))) {
2958 /* we found a bulk out endpoint */
2959 dev_dbg(ddev
, "found bulk out\n");
2960 edge_serial
->bulk_out_endpoint
=
2961 endpoint
->bEndpointAddress
;
2962 bulk_out_found
= true;
2966 if (!interrupt_in_found
|| !bulk_in_found
|| !bulk_out_found
) {
2967 dev_err(ddev
, "Error - the proper endpoints were not found!\n");
2971 /* start interrupt read for this edgeport this interrupt will
2972 * continue as long as the edgeport is connected */
2973 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
,
2976 dev_err(ddev
, "%s - Error %d submitting control urb\n",
2977 __func__
, response
);
2983 /****************************************************************************
2985 * This function is called whenever the device is removed from the usb bus.
2986 ****************************************************************************/
2987 static void edge_disconnect(struct usb_serial
*serial
)
2989 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
2991 /* stop reads and writes on all ports */
2992 /* free up our endpoint stuff */
2993 if (edge_serial
->is_epic
) {
2994 usb_kill_urb(edge_serial
->interrupt_read_urb
);
2995 usb_free_urb(edge_serial
->interrupt_read_urb
);
2996 kfree(edge_serial
->interrupt_in_buffer
);
2998 usb_kill_urb(edge_serial
->read_urb
);
2999 usb_free_urb(edge_serial
->read_urb
);
3000 kfree(edge_serial
->bulk_in_buffer
);
3005 /****************************************************************************
3007 * This function is called when the device structure is deallocated.
3008 ****************************************************************************/
3009 static void edge_release(struct usb_serial
*serial
)
3011 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
3016 static int edge_port_probe(struct usb_serial_port
*port
)
3018 struct edgeport_port
*edge_port
;
3020 edge_port
= kzalloc(sizeof(*edge_port
), GFP_KERNEL
);
3024 spin_lock_init(&edge_port
->ep_lock
);
3025 edge_port
->port
= port
;
3027 usb_set_serial_port_data(port
, edge_port
);
3032 static int edge_port_remove(struct usb_serial_port
*port
)
3034 struct edgeport_port
*edge_port
;
3036 edge_port
= usb_get_serial_port_data(port
);
3042 module_usb_serial_driver(serial_drivers
, id_table_combined
);
3044 MODULE_AUTHOR(DRIVER_AUTHOR
);
3045 MODULE_DESCRIPTION(DRIVER_DESC
);
3046 MODULE_LICENSE("GPL");
3047 MODULE_FIRMWARE("edgeport/boot.fw");
3048 MODULE_FIRMWARE("edgeport/boot2.fw");
3049 MODULE_FIRMWARE("edgeport/down.fw");
3050 MODULE_FIRMWARE("edgeport/down2.fw");