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 */
57 #define DRIVER_VERSION "v2.7"
58 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
59 #define DRIVER_DESC "Edgeport USB Serial Driver"
61 #define MAX_NAME_LEN 64
63 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
64 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
65 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
67 /* receive port state */
69 EXPECT_HDR1
= 0, /* Expect header byte 1 */
70 EXPECT_HDR2
= 1, /* Expect header byte 2 */
71 EXPECT_DATA
= 2, /* Expect 'RxBytesRemaining' data */
72 EXPECT_HDR3
= 3, /* Expect header byte 3 (for status hdrs only) */
77 * This Transmit queue is an extension of the edgeport Rx buffer.
78 * The maximum amount of data buffered in both the edgeport
79 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
82 unsigned int head
; /* index to head pointer (write) */
83 unsigned int tail
; /* index to tail pointer (read) */
84 unsigned int count
; /* Bytes in queue */
85 unsigned int size
; /* Max size of queue (equal to Max number of TxCredits) */
86 unsigned char *fifo
; /* allocated Buffer */
89 /* This structure holds all of the local port information */
90 struct edgeport_port
{
91 __u16 txCredits
; /* our current credits for this port */
92 __u16 maxTxCredits
; /* the max size of the port */
94 struct TxFifo txfifo
; /* transmit fifo -- size will be maxTxCredits */
95 struct urb
*write_urb
; /* write URB for this port */
96 bool write_in_progress
; /* 'true' while a write URB is outstanding */
99 __u8 shadowLCR
; /* last LCR value received */
100 __u8 shadowMCR
; /* last MCR value received */
101 __u8 shadowMSR
; /* last MSR value received */
102 __u8 shadowLSR
; /* last LSR value received */
103 __u8 shadowXonChar
; /* last value set as XON char in Edgeport */
104 __u8 shadowXoffChar
; /* last value set as XOFF char in Edgeport */
112 bool chaseResponsePending
;
114 wait_queue_head_t wait_chase
; /* for handling sleeping while waiting for chase to finish */
115 wait_queue_head_t wait_open
; /* for handling sleeping while waiting for open to finish */
116 wait_queue_head_t wait_command
; /* for handling sleeping while waiting for command to finish */
117 wait_queue_head_t delta_msr_wait
; /* for handling sleeping while waiting for msr change to happen */
119 struct async_icount icount
;
120 struct usb_serial_port
*port
; /* loop back to the owner of this object */
124 /* This structure holds all of the individual device information */
125 struct edgeport_serial
{
126 char name
[MAX_NAME_LEN
+2]; /* string name of this device */
128 struct edge_manuf_descriptor manuf_descriptor
; /* the manufacturer descriptor */
129 struct edge_boot_descriptor boot_descriptor
; /* the boot firmware descriptor */
130 struct edgeport_product_info product_info
; /* Product Info */
131 struct edge_compatibility_descriptor epic_descriptor
; /* Edgeport compatible descriptor */
132 int is_epic
; /* flag if EPiC device or not */
134 __u8 interrupt_in_endpoint
; /* the interrupt endpoint handle */
135 unsigned char *interrupt_in_buffer
; /* the buffer we use for the interrupt endpoint */
136 struct urb
*interrupt_read_urb
; /* our interrupt urb */
138 __u8 bulk_in_endpoint
; /* the bulk in endpoint handle */
139 unsigned char *bulk_in_buffer
; /* the buffer we use for the bulk in endpoint */
140 struct urb
*read_urb
; /* our bulk read urb */
141 bool read_in_progress
;
144 __u8 bulk_out_endpoint
; /* the bulk out endpoint handle */
146 __s16 rxBytesAvail
; /* the number of bytes that we need to read from this device */
148 enum RXSTATE rxState
; /* the current state of the bulk receive processor */
149 __u8 rxHeader1
; /* receive header byte 1 */
150 __u8 rxHeader2
; /* receive header byte 2 */
151 __u8 rxHeader3
; /* receive header byte 3 */
152 __u8 rxPort
; /* the port that we are currently receiving data for */
153 __u8 rxStatusCode
; /* the receive status code */
154 __u8 rxStatusParam
; /* the receive status paramater */
155 __s16 rxBytesRemaining
; /* the number of port bytes left to read */
156 struct usb_serial
*serial
; /* loop back to the owner of this object */
159 /* baud rate information */
160 struct divisor_table_entry
{
166 * Define table of divisors for Rev A EdgePort/4 hardware
167 * These assume a 3.6864MHz crystal, the standard /16, and
171 static const struct divisor_table_entry divisor_table
[] = {
174 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
175 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
193 /* local variables */
196 /* Number of outstanding Command Write Urbs */
197 static atomic_t CmdUrbs
= ATOMIC_INIT(0);
200 /* local function prototypes */
202 /* function prototypes for all URB callbacks */
203 static void edge_interrupt_callback(struct urb
*urb
);
204 static void edge_bulk_in_callback(struct urb
*urb
);
205 static void edge_bulk_out_data_callback(struct urb
*urb
);
206 static void edge_bulk_out_cmd_callback(struct urb
*urb
);
208 /* function prototypes for the usbserial callbacks */
209 static int edge_open(struct tty_struct
*tty
, struct usb_serial_port
*port
);
210 static void edge_close(struct usb_serial_port
*port
);
211 static int edge_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
212 const unsigned char *buf
, int count
);
213 static int edge_write_room(struct tty_struct
*tty
);
214 static int edge_chars_in_buffer(struct tty_struct
*tty
);
215 static void edge_throttle(struct tty_struct
*tty
);
216 static void edge_unthrottle(struct tty_struct
*tty
);
217 static void edge_set_termios(struct tty_struct
*tty
,
218 struct usb_serial_port
*port
,
219 struct ktermios
*old_termios
);
220 static int edge_ioctl(struct tty_struct
*tty
,
221 unsigned int cmd
, unsigned long arg
);
222 static void edge_break(struct tty_struct
*tty
, int break_state
);
223 static int edge_tiocmget(struct tty_struct
*tty
);
224 static int edge_tiocmset(struct tty_struct
*tty
,
225 unsigned int set
, unsigned int clear
);
226 static int edge_get_icount(struct tty_struct
*tty
,
227 struct serial_icounter_struct
*icount
);
228 static int edge_startup(struct usb_serial
*serial
);
229 static void edge_disconnect(struct usb_serial
*serial
);
230 static void edge_release(struct usb_serial
*serial
);
232 #include "io_tables.h" /* all of the devices that this driver supports */
234 /* function prototypes for all of our local functions */
236 static void process_rcvd_data(struct edgeport_serial
*edge_serial
,
237 unsigned char *buffer
, __u16 bufferLength
);
238 static void process_rcvd_status(struct edgeport_serial
*edge_serial
,
239 __u8 byte2
, __u8 byte3
);
240 static void edge_tty_recv(struct device
*dev
, struct tty_struct
*tty
,
241 unsigned char *data
, int length
);
242 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
);
243 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
,
244 __u8 lsr
, __u8 data
);
245 static int send_iosp_ext_cmd(struct edgeport_port
*edge_port
, __u8 command
,
247 static int calc_baud_rate_divisor(int baud_rate
, int *divisor
);
248 static int send_cmd_write_baud_rate(struct edgeport_port
*edge_port
,
250 static void change_port_settings(struct tty_struct
*tty
,
251 struct edgeport_port
*edge_port
,
252 struct ktermios
*old_termios
);
253 static int send_cmd_write_uart_register(struct edgeport_port
*edge_port
,
254 __u8 regNum
, __u8 regValue
);
255 static int write_cmd_usb(struct edgeport_port
*edge_port
,
256 unsigned char *buffer
, int writeLength
);
257 static void send_more_port_data(struct edgeport_serial
*edge_serial
,
258 struct edgeport_port
*edge_port
);
260 static int sram_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
261 __u16 length
, const __u8
*data
);
262 static int rom_read(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
263 __u16 length
, __u8
*data
);
264 static int rom_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
265 __u16 length
, const __u8
*data
);
266 static void get_manufacturing_desc(struct edgeport_serial
*edge_serial
);
267 static void get_boot_desc(struct edgeport_serial
*edge_serial
);
268 static void load_application_firmware(struct edgeport_serial
*edge_serial
);
270 static void unicode_to_ascii(char *string
, int buflen
,
271 __le16
*unicode
, int unicode_size
);
274 /* ************************************************************************ */
275 /* ************************************************************************ */
276 /* ************************************************************************ */
277 /* ************************************************************************ */
279 /************************************************************************
281 * update_edgeport_E2PROM() Compare current versions of *
282 * Boot ROM and Manufacture *
283 * Descriptors with versions *
284 * embedded in this driver *
286 ************************************************************************/
287 static void update_edgeport_E2PROM(struct edgeport_serial
*edge_serial
)
291 __u8 BootMajorVersion
;
292 __u8 BootMinorVersion
;
293 __u16 BootBuildNumber
;
295 const struct ihex_binrec
*rec
;
296 const struct firmware
*fw
;
300 switch (edge_serial
->product_info
.iDownloadFile
) {
301 case EDGE_DOWNLOAD_FILE_I930
:
302 fw_name
= "edgeport/boot.fw";
304 case EDGE_DOWNLOAD_FILE_80251
:
305 fw_name
= "edgeport/boot2.fw";
311 response
= request_ihex_firmware(&fw
, fw_name
,
312 &edge_serial
->serial
->dev
->dev
);
314 printk(KERN_ERR
"Failed to load image \"%s\" err %d\n",
319 rec
= (const struct ihex_binrec
*)fw
->data
;
320 BootMajorVersion
= rec
->data
[0];
321 BootMinorVersion
= rec
->data
[1];
322 BootBuildNumber
= (rec
->data
[2] << 8) | rec
->data
[3];
324 /* Check Boot Image Version */
325 BootCurVer
= (edge_serial
->boot_descriptor
.MajorVersion
<< 24) +
326 (edge_serial
->boot_descriptor
.MinorVersion
<< 16) +
327 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
);
329 BootNewVer
= (BootMajorVersion
<< 24) +
330 (BootMinorVersion
<< 16) +
333 dbg("Current Boot Image version %d.%d.%d",
334 edge_serial
->boot_descriptor
.MajorVersion
,
335 edge_serial
->boot_descriptor
.MinorVersion
,
336 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
339 if (BootNewVer
> BootCurVer
) {
340 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
341 edge_serial
->boot_descriptor
.MajorVersion
,
342 edge_serial
->boot_descriptor
.MinorVersion
,
343 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
),
344 BootMajorVersion
, BootMinorVersion
, BootBuildNumber
);
346 dbg("Downloading new Boot Image");
348 for (rec
= ihex_next_binrec(rec
); rec
;
349 rec
= ihex_next_binrec(rec
)) {
350 Bootaddr
= be32_to_cpu(rec
->addr
);
351 response
= rom_write(edge_serial
->serial
,
354 be16_to_cpu(rec
->len
),
357 dev_err(&edge_serial
->serial
->dev
->dev
,
358 "rom_write failed (%x, %x, %d)\n",
359 Bootaddr
>> 16, Bootaddr
& 0xFFFF,
360 be16_to_cpu(rec
->len
));
365 dbg("Boot Image -- already up to date");
367 release_firmware(fw
);
371 /************************************************************************
373 * Get string descriptor from device
375 ************************************************************************/
376 static int get_string_desc(struct usb_device
*dev
, int Id
,
377 struct usb_string_descriptor
**pRetDesc
)
379 struct usb_string_descriptor StringDesc
;
380 struct usb_string_descriptor
*pStringDesc
;
382 dbg("%s - USB String ID = %d", __func__
, Id
);
384 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
,
388 pStringDesc
= kmalloc(StringDesc
.bLength
, GFP_KERNEL
);
392 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
,
393 StringDesc
.bLength
)) {
398 *pRetDesc
= pStringDesc
;
403 static void dump_product_info(struct edgeport_product_info
*product_info
)
405 /* Dump Product Info structure */
406 dbg("**Product Information:");
407 dbg(" ProductId %x", product_info
->ProductId
);
408 dbg(" NumPorts %d", product_info
->NumPorts
);
409 dbg(" ProdInfoVer %d", product_info
->ProdInfoVer
);
410 dbg(" IsServer %d", product_info
->IsServer
);
411 dbg(" IsRS232 %d", product_info
->IsRS232
);
412 dbg(" IsRS422 %d", product_info
->IsRS422
);
413 dbg(" IsRS485 %d", product_info
->IsRS485
);
414 dbg(" RomSize %d", product_info
->RomSize
);
415 dbg(" RamSize %d", product_info
->RamSize
);
416 dbg(" CpuRev %x", product_info
->CpuRev
);
417 dbg(" BoardRev %x", product_info
->BoardRev
);
418 dbg(" BootMajorVersion %d.%d.%d", product_info
->BootMajorVersion
,
419 product_info
->BootMinorVersion
,
420 le16_to_cpu(product_info
->BootBuildNumber
));
421 dbg(" FirmwareMajorVersion %d.%d.%d",
422 product_info
->FirmwareMajorVersion
,
423 product_info
->FirmwareMinorVersion
,
424 le16_to_cpu(product_info
->FirmwareBuildNumber
));
425 dbg(" ManufactureDescDate %d/%d/%d",
426 product_info
->ManufactureDescDate
[0],
427 product_info
->ManufactureDescDate
[1],
428 product_info
->ManufactureDescDate
[2]+1900);
429 dbg(" iDownloadFile 0x%x", product_info
->iDownloadFile
);
430 dbg(" EpicVer %d", product_info
->EpicVer
);
433 static void get_product_info(struct edgeport_serial
*edge_serial
)
435 struct edgeport_product_info
*product_info
= &edge_serial
->product_info
;
437 memset(product_info
, 0, sizeof(struct edgeport_product_info
));
439 product_info
->ProductId
= (__u16
)(le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ~ION_DEVICE_ID_80251_NETCHIP
);
440 product_info
->NumPorts
= edge_serial
->manuf_descriptor
.NumPorts
;
441 product_info
->ProdInfoVer
= 0;
443 product_info
->RomSize
= edge_serial
->manuf_descriptor
.RomSize
;
444 product_info
->RamSize
= edge_serial
->manuf_descriptor
.RamSize
;
445 product_info
->CpuRev
= edge_serial
->manuf_descriptor
.CpuRev
;
446 product_info
->BoardRev
= edge_serial
->manuf_descriptor
.BoardRev
;
448 product_info
->BootMajorVersion
=
449 edge_serial
->boot_descriptor
.MajorVersion
;
450 product_info
->BootMinorVersion
=
451 edge_serial
->boot_descriptor
.MinorVersion
;
452 product_info
->BootBuildNumber
=
453 edge_serial
->boot_descriptor
.BuildNumber
;
455 memcpy(product_info
->ManufactureDescDate
,
456 edge_serial
->manuf_descriptor
.DescDate
,
457 sizeof(edge_serial
->manuf_descriptor
.DescDate
));
459 /* check if this is 2nd generation hardware */
460 if (le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
)
461 & ION_DEVICE_ID_80251_NETCHIP
)
462 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_80251
;
464 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_I930
;
466 /* Determine Product type and set appropriate flags */
467 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info
->ProductId
)) {
468 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE
:
469 case ION_DEVICE_ID_EDGEPORT_4T
:
470 case ION_DEVICE_ID_EDGEPORT_4
:
471 case ION_DEVICE_ID_EDGEPORT_2
:
472 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU
:
473 case ION_DEVICE_ID_EDGEPORT_8
:
474 case ION_DEVICE_ID_EDGEPORT_421
:
475 case ION_DEVICE_ID_EDGEPORT_21
:
476 case ION_DEVICE_ID_EDGEPORT_2_DIN
:
477 case ION_DEVICE_ID_EDGEPORT_4_DIN
:
478 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU
:
479 product_info
->IsRS232
= 1;
482 case ION_DEVICE_ID_EDGEPORT_2I
: /* Edgeport/2 RS422/RS485 */
483 product_info
->IsRS422
= 1;
484 product_info
->IsRS485
= 1;
487 case ION_DEVICE_ID_EDGEPORT_8I
: /* Edgeport/4 RS422 */
488 case ION_DEVICE_ID_EDGEPORT_4I
: /* Edgeport/4 RS422 */
489 product_info
->IsRS422
= 1;
493 dump_product_info(product_info
);
496 static int get_epic_descriptor(struct edgeport_serial
*ep
)
499 struct usb_serial
*serial
= ep
->serial
;
500 struct edgeport_product_info
*product_info
= &ep
->product_info
;
501 struct edge_compatibility_descriptor
*epic
= &ep
->epic_descriptor
;
502 struct edge_compatibility_bits
*bits
;
505 result
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
506 USB_REQUEST_ION_GET_EPIC_DESC
,
508 &ep
->epic_descriptor
,
509 sizeof(struct edge_compatibility_descriptor
),
512 dbg("%s result = %d", __func__
, result
);
516 memset(product_info
, 0, sizeof(struct edgeport_product_info
));
518 product_info
->NumPorts
= epic
->NumPorts
;
519 product_info
->ProdInfoVer
= 0;
520 product_info
->FirmwareMajorVersion
= epic
->MajorVersion
;
521 product_info
->FirmwareMinorVersion
= epic
->MinorVersion
;
522 product_info
->FirmwareBuildNumber
= epic
->BuildNumber
;
523 product_info
->iDownloadFile
= epic
->iDownloadFile
;
524 product_info
->EpicVer
= epic
->EpicVer
;
525 product_info
->Epic
= epic
->Supports
;
526 product_info
->ProductId
= ION_DEVICE_ID_EDGEPORT_COMPATIBLE
;
527 dump_product_info(product_info
);
529 bits
= &ep
->epic_descriptor
.Supports
;
530 dbg("**EPIC descriptor:");
531 dbg(" VendEnableSuspend: %s", bits
->VendEnableSuspend
? "TRUE": "FALSE");
532 dbg(" IOSPOpen : %s", bits
->IOSPOpen
? "TRUE": "FALSE");
533 dbg(" IOSPClose : %s", bits
->IOSPClose
? "TRUE": "FALSE");
534 dbg(" IOSPChase : %s", bits
->IOSPChase
? "TRUE": "FALSE");
535 dbg(" IOSPSetRxFlow : %s", bits
->IOSPSetRxFlow
? "TRUE": "FALSE");
536 dbg(" IOSPSetTxFlow : %s", bits
->IOSPSetTxFlow
? "TRUE": "FALSE");
537 dbg(" IOSPSetXChar : %s", bits
->IOSPSetXChar
? "TRUE": "FALSE");
538 dbg(" IOSPRxCheck : %s", bits
->IOSPRxCheck
? "TRUE": "FALSE");
539 dbg(" IOSPSetClrBreak : %s", bits
->IOSPSetClrBreak
? "TRUE": "FALSE");
540 dbg(" IOSPWriteMCR : %s", bits
->IOSPWriteMCR
? "TRUE": "FALSE");
541 dbg(" IOSPWriteLCR : %s", bits
->IOSPWriteLCR
? "TRUE": "FALSE");
542 dbg(" IOSPSetBaudRate : %s", bits
->IOSPSetBaudRate
? "TRUE": "FALSE");
543 dbg(" TrueEdgeport : %s", bits
->TrueEdgeport
? "TRUE": "FALSE");
550 /************************************************************************/
551 /************************************************************************/
552 /* U S B C A L L B A C K F U N C T I O N S */
553 /* U S B C A L L B A C K F U N C T I O N S */
554 /************************************************************************/
555 /************************************************************************/
557 /*****************************************************************************
558 * edge_interrupt_callback
559 * this is the callback function for when we have received data on the
560 * interrupt endpoint.
561 *****************************************************************************/
562 static void edge_interrupt_callback(struct urb
*urb
)
564 struct edgeport_serial
*edge_serial
= urb
->context
;
565 struct edgeport_port
*edge_port
;
566 struct usb_serial_port
*port
;
567 struct tty_struct
*tty
;
568 unsigned char *data
= urb
->transfer_buffer
;
569 int length
= urb
->actual_length
;
575 int status
= urb
->status
;
586 /* this urb is terminated, clean up */
587 dbg("%s - urb shutting down with status: %d",
591 dbg("%s - nonzero urb status received: %d", __func__
, status
);
595 /* process this interrupt-read even if there are no ports open */
597 usb_serial_debug_data(debug
, &edge_serial
->serial
->dev
->dev
,
598 __func__
, length
, data
);
601 bytes_avail
= data
[0] | (data
[1] << 8);
603 spin_lock(&edge_serial
->es_lock
);
604 edge_serial
->rxBytesAvail
+= bytes_avail
;
605 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__
, bytes_avail
, edge_serial
->rxBytesAvail
, edge_serial
->read_in_progress
);
607 if (edge_serial
->rxBytesAvail
> 0 &&
608 !edge_serial
->read_in_progress
) {
609 dbg("%s - posting a read", __func__
);
610 edge_serial
->read_in_progress
= true;
612 /* we have pending bytes on the
613 bulk in pipe, send a request */
614 result
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
616 dev_err(&edge_serial
->serial
->dev
->dev
, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__
, result
);
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 dbg("%s - txcredits for port%d = %d",
637 __func__
, portNumber
,
638 edge_port
->txCredits
);
640 /* tell the tty driver that something
642 tty
= tty_port_tty_get(
643 &edge_port
->port
->port
);
648 /* Since we have more credit, check
649 if more data can be sent */
650 send_more_port_data(edge_serial
,
660 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
662 dev_err(&urb
->dev
->dev
,
663 "%s - Error %d submitting control urb\n",
668 /*****************************************************************************
669 * edge_bulk_in_callback
670 * this is the callback function for when we have received data on the
672 *****************************************************************************/
673 static void edge_bulk_in_callback(struct urb
*urb
)
675 struct edgeport_serial
*edge_serial
= urb
->context
;
676 unsigned char *data
= urb
->transfer_buffer
;
678 __u16 raw_data_length
;
679 int status
= urb
->status
;
684 dbg("%s - nonzero read bulk status received: %d",
686 edge_serial
->read_in_progress
= false;
690 if (urb
->actual_length
== 0) {
691 dbg("%s - read bulk callback with no data", __func__
);
692 edge_serial
->read_in_progress
= false;
696 raw_data_length
= urb
->actual_length
;
698 usb_serial_debug_data(debug
, &edge_serial
->serial
->dev
->dev
,
699 __func__
, raw_data_length
, data
);
701 spin_lock(&edge_serial
->es_lock
);
703 /* decrement our rxBytes available by the number that we just got */
704 edge_serial
->rxBytesAvail
-= raw_data_length
;
706 dbg("%s - Received = %d, rxBytesAvail %d", __func__
,
707 raw_data_length
, edge_serial
->rxBytesAvail
);
709 process_rcvd_data(edge_serial
, data
, urb
->actual_length
);
711 /* check to see if there's any more data for us to read */
712 if (edge_serial
->rxBytesAvail
> 0) {
713 dbg("%s - posting a read", __func__
);
714 retval
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
716 dev_err(&urb
->dev
->dev
,
717 "%s - usb_submit_urb(read bulk) failed, "
718 "retval = %d\n", __func__
, retval
);
719 edge_serial
->read_in_progress
= false;
722 edge_serial
->read_in_progress
= false;
725 spin_unlock(&edge_serial
->es_lock
);
729 /*****************************************************************************
730 * edge_bulk_out_data_callback
731 * this is the callback function for when we have finished sending
732 * serial data on the bulk out endpoint.
733 *****************************************************************************/
734 static void edge_bulk_out_data_callback(struct urb
*urb
)
736 struct edgeport_port
*edge_port
= urb
->context
;
737 struct tty_struct
*tty
;
738 int status
= urb
->status
;
743 dbg("%s - nonzero write bulk status received: %d",
747 tty
= tty_port_tty_get(&edge_port
->port
->port
);
749 if (tty
&& edge_port
->open
) {
750 /* let the tty driver wakeup if it has a special
751 write_wakeup function */
756 /* Release the Write URB */
757 edge_port
->write_in_progress
= false;
759 /* Check if more data needs to be sent */
760 send_more_port_data((struct edgeport_serial
*)
761 (usb_get_serial_data(edge_port
->port
->serial
)), edge_port
);
765 /*****************************************************************************
767 * this is the callback function for when we have finished sending a
768 * command on the bulk out endpoint.
769 *****************************************************************************/
770 static void edge_bulk_out_cmd_callback(struct urb
*urb
)
772 struct edgeport_port
*edge_port
= urb
->context
;
773 struct tty_struct
*tty
;
774 int status
= urb
->status
;
778 atomic_dec(&CmdUrbs
);
779 dbg("%s - FREE URB %p (outstanding %d)", __func__
,
780 urb
, atomic_read(&CmdUrbs
));
783 /* clean up the transfer buffer */
784 kfree(urb
->transfer_buffer
);
786 /* Free the command urb */
790 dbg("%s - nonzero write bulk status received: %d",
795 /* Get pointer to tty */
796 tty
= tty_port_tty_get(&edge_port
->port
->port
);
798 /* tell the tty driver that something has changed */
799 if (tty
&& edge_port
->open
)
803 /* we have completed the command */
804 edge_port
->commandPending
= false;
805 wake_up(&edge_port
->wait_command
);
809 /*****************************************************************************
810 * Driver tty interface functions
811 *****************************************************************************/
813 /*****************************************************************************
815 * this function is called by the tty driver when a port is opened
816 * If successful, we return 0
817 * Otherwise we return a negative error number.
818 *****************************************************************************/
819 static int edge_open(struct tty_struct
*tty
, struct usb_serial_port
*port
)
821 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
822 struct usb_serial
*serial
;
823 struct edgeport_serial
*edge_serial
;
826 dbg("%s - port %d", __func__
, port
->number
);
828 if (edge_port
== NULL
)
831 /* see if we've set up our endpoint info yet (can't set it up
832 in edge_startup as the structures were not set up at that time.) */
833 serial
= port
->serial
;
834 edge_serial
= usb_get_serial_data(serial
);
835 if (edge_serial
== NULL
)
837 if (edge_serial
->interrupt_in_buffer
== NULL
) {
838 struct usb_serial_port
*port0
= serial
->port
[0];
840 /* not set up yet, so do it now */
841 edge_serial
->interrupt_in_buffer
=
842 port0
->interrupt_in_buffer
;
843 edge_serial
->interrupt_in_endpoint
=
844 port0
->interrupt_in_endpointAddress
;
845 edge_serial
->interrupt_read_urb
= port0
->interrupt_in_urb
;
846 edge_serial
->bulk_in_buffer
= port0
->bulk_in_buffer
;
847 edge_serial
->bulk_in_endpoint
=
848 port0
->bulk_in_endpointAddress
;
849 edge_serial
->read_urb
= port0
->read_urb
;
850 edge_serial
->bulk_out_endpoint
=
851 port0
->bulk_out_endpointAddress
;
853 /* set up our interrupt urb */
854 usb_fill_int_urb(edge_serial
->interrupt_read_urb
,
856 usb_rcvintpipe(serial
->dev
,
857 port0
->interrupt_in_endpointAddress
),
858 port0
->interrupt_in_buffer
,
859 edge_serial
->interrupt_read_urb
->transfer_buffer_length
,
860 edge_interrupt_callback
, edge_serial
,
861 edge_serial
->interrupt_read_urb
->interval
);
863 /* set up our bulk in urb */
864 usb_fill_bulk_urb(edge_serial
->read_urb
, serial
->dev
,
865 usb_rcvbulkpipe(serial
->dev
,
866 port0
->bulk_in_endpointAddress
),
867 port0
->bulk_in_buffer
,
868 edge_serial
->read_urb
->transfer_buffer_length
,
869 edge_bulk_in_callback
, edge_serial
);
870 edge_serial
->read_in_progress
= false;
872 /* start interrupt read for this edgeport
873 * this interrupt will continue as long
874 * as the edgeport is connected */
875 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
,
879 "%s - Error %d submitting control urb\n",
884 /* initialize our wait queues */
885 init_waitqueue_head(&edge_port
->wait_open
);
886 init_waitqueue_head(&edge_port
->wait_chase
);
887 init_waitqueue_head(&edge_port
->delta_msr_wait
);
888 init_waitqueue_head(&edge_port
->wait_command
);
890 /* initialize our icount structure */
891 memset(&(edge_port
->icount
), 0x00, sizeof(edge_port
->icount
));
893 /* initialize our port settings */
894 edge_port
->txCredits
= 0; /* Can't send any data yet */
895 /* Must always set this bit to enable ints! */
896 edge_port
->shadowMCR
= MCR_MASTER_IE
;
897 edge_port
->chaseResponsePending
= false;
899 /* send a open port command */
900 edge_port
->openPending
= true;
901 edge_port
->open
= false;
902 response
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_OPEN_PORT
, 0);
905 dev_err(&port
->dev
, "%s - error sending open port command\n",
907 edge_port
->openPending
= false;
911 /* now wait for the port to be completely opened */
912 wait_event_timeout(edge_port
->wait_open
, !edge_port
->openPending
,
915 if (!edge_port
->open
) {
917 dbg("%s - open timedout", __func__
);
918 edge_port
->openPending
= false;
922 /* create the txfifo */
923 edge_port
->txfifo
.head
= 0;
924 edge_port
->txfifo
.tail
= 0;
925 edge_port
->txfifo
.count
= 0;
926 edge_port
->txfifo
.size
= edge_port
->maxTxCredits
;
927 edge_port
->txfifo
.fifo
= kmalloc(edge_port
->maxTxCredits
, GFP_KERNEL
);
929 if (!edge_port
->txfifo
.fifo
) {
930 dbg("%s - no memory", __func__
);
935 /* Allocate a URB for the write */
936 edge_port
->write_urb
= usb_alloc_urb(0, GFP_KERNEL
);
937 edge_port
->write_in_progress
= false;
939 if (!edge_port
->write_urb
) {
940 dbg("%s - no memory", __func__
);
945 dbg("%s(%d) - Initialize TX fifo to %d bytes",
946 __func__
, port
->number
, edge_port
->maxTxCredits
);
948 dbg("%s exited", __func__
);
954 /************************************************************************
956 * block_until_chase_response
958 * This function will block the close until one of the following:
959 * 1. Response to our Chase comes from Edgeport
960 * 2. A timeout of 10 seconds without activity has expired
961 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
963 ************************************************************************/
964 static void block_until_chase_response(struct edgeport_port
*edge_port
)
972 /* Save Last credits */
973 lastCredits
= edge_port
->txCredits
;
975 /* Did we get our Chase response */
976 if (!edge_port
->chaseResponsePending
) {
977 dbg("%s - Got Chase Response", __func__
);
979 /* did we get all of our credit back? */
980 if (edge_port
->txCredits
== edge_port
->maxTxCredits
) {
981 dbg("%s - Got all credits", __func__
);
986 /* Block the thread for a while */
987 prepare_to_wait(&edge_port
->wait_chase
, &wait
,
988 TASK_UNINTERRUPTIBLE
);
989 schedule_timeout(timeout
);
990 finish_wait(&edge_port
->wait_chase
, &wait
);
992 if (lastCredits
== edge_port
->txCredits
) {
993 /* No activity.. count down. */
996 edge_port
->chaseResponsePending
= false;
997 dbg("%s - Chase TIMEOUT", __func__
);
1001 /* Reset timeout value back to 10 seconds */
1002 dbg("%s - Last %d, Current %d", __func__
,
1003 lastCredits
, edge_port
->txCredits
);
1010 /************************************************************************
1012 * block_until_tx_empty
1014 * This function will block the close until one of the following:
1016 * 2. The edgeport has stopped
1017 * 3. A timeout of 3 seconds without activity has expired
1019 ************************************************************************/
1020 static void block_until_tx_empty(struct edgeport_port
*edge_port
)
1023 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1025 int timeout
= HZ
/10;
1029 /* Save Last count */
1030 lastCount
= fifo
->count
;
1032 /* Is the Edgeport Buffer empty? */
1033 if (lastCount
== 0) {
1034 dbg("%s - TX Buffer Empty", __func__
);
1038 /* Block the thread for a while */
1039 prepare_to_wait(&edge_port
->wait_chase
, &wait
,
1040 TASK_UNINTERRUPTIBLE
);
1041 schedule_timeout(timeout
);
1042 finish_wait(&edge_port
->wait_chase
, &wait
);
1044 dbg("%s wait", __func__
);
1046 if (lastCount
== fifo
->count
) {
1047 /* No activity.. count down. */
1050 dbg("%s - TIMEOUT", __func__
);
1054 /* Reset timeout value back to seconds */
1061 /*****************************************************************************
1063 * this function is called by the tty driver when a port is closed
1064 *****************************************************************************/
1065 static void edge_close(struct usb_serial_port
*port
)
1067 struct edgeport_serial
*edge_serial
;
1068 struct edgeport_port
*edge_port
;
1071 dbg("%s - port %d", __func__
, port
->number
);
1073 edge_serial
= usb_get_serial_data(port
->serial
);
1074 edge_port
= usb_get_serial_port_data(port
);
1075 if (edge_serial
== NULL
|| edge_port
== NULL
)
1078 /* block until tx is empty */
1079 block_until_tx_empty(edge_port
);
1081 edge_port
->closePending
= true;
1083 if ((!edge_serial
->is_epic
) ||
1084 ((edge_serial
->is_epic
) &&
1085 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1086 /* flush and chase */
1087 edge_port
->chaseResponsePending
= true;
1089 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__
);
1090 status
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1092 /* block until chase finished */
1093 block_until_chase_response(edge_port
);
1095 edge_port
->chaseResponsePending
= false;
1098 if ((!edge_serial
->is_epic
) ||
1099 ((edge_serial
->is_epic
) &&
1100 (edge_serial
->epic_descriptor
.Supports
.IOSPClose
))) {
1101 /* close the port */
1102 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__
);
1103 send_iosp_ext_cmd(edge_port
, IOSP_CMD_CLOSE_PORT
, 0);
1106 /* port->close = true; */
1107 edge_port
->closePending
= false;
1108 edge_port
->open
= false;
1109 edge_port
->openPending
= false;
1111 usb_kill_urb(edge_port
->write_urb
);
1113 if (edge_port
->write_urb
) {
1114 /* if this urb had a transfer buffer already
1115 (old transfer) free it */
1116 kfree(edge_port
->write_urb
->transfer_buffer
);
1117 usb_free_urb(edge_port
->write_urb
);
1118 edge_port
->write_urb
= NULL
;
1120 kfree(edge_port
->txfifo
.fifo
);
1121 edge_port
->txfifo
.fifo
= NULL
;
1123 dbg("%s exited", __func__
);
1126 /*****************************************************************************
1128 * this function is called by the tty driver when data should be written
1130 * If successful, we return the number of bytes written, otherwise we
1131 * return a negative error number.
1132 *****************************************************************************/
1133 static int edge_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
1134 const unsigned char *data
, int count
)
1136 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1137 struct TxFifo
*fifo
;
1142 unsigned long flags
;
1144 dbg("%s - port %d", __func__
, port
->number
);
1146 if (edge_port
== NULL
)
1149 /* get a pointer to the Tx fifo */
1150 fifo
= &edge_port
->txfifo
;
1152 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1154 /* calculate number of bytes to put in fifo */
1155 copySize
= min((unsigned int)count
,
1156 (edge_port
->txCredits
- fifo
->count
));
1158 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes",
1159 __func__
, port
->number
, count
,
1160 edge_port
->txCredits
- fifo
->count
, copySize
);
1162 /* catch writes of 0 bytes which the tty driver likes to give us,
1163 and when txCredits is empty */
1164 if (copySize
== 0) {
1165 dbg("%s - copySize = Zero", __func__
);
1170 * since we can never overflow the buffer we do not have to check for a
1173 * the copy is done is two parts -- first fill to the end of the buffer
1174 * then copy the reset from the start of the buffer
1176 bytesleft
= fifo
->size
- fifo
->head
;
1177 firsthalf
= min(bytesleft
, copySize
);
1178 dbg("%s - copy %d bytes of %d into fifo ", __func__
,
1179 firsthalf
, bytesleft
);
1181 /* now copy our data */
1182 memcpy(&fifo
->fifo
[fifo
->head
], data
, firsthalf
);
1183 usb_serial_debug_data(debug
, &port
->dev
, __func__
,
1184 firsthalf
, &fifo
->fifo
[fifo
->head
]);
1186 /* update the index and size */
1187 fifo
->head
+= firsthalf
;
1188 fifo
->count
+= firsthalf
;
1190 /* wrap the index */
1191 if (fifo
->head
== fifo
->size
)
1194 secondhalf
= copySize
-firsthalf
;
1197 dbg("%s - copy rest of data %d", __func__
, secondhalf
);
1198 memcpy(&fifo
->fifo
[fifo
->head
], &data
[firsthalf
], secondhalf
);
1199 usb_serial_debug_data(debug
, &port
->dev
, __func__
,
1200 secondhalf
, &fifo
->fifo
[fifo
->head
]);
1201 /* update the index and size */
1202 fifo
->count
+= secondhalf
;
1203 fifo
->head
+= secondhalf
;
1204 /* No need to check for wrap since we can not get to end of
1205 * the fifo in this part
1210 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1212 send_more_port_data((struct edgeport_serial
*)
1213 usb_get_serial_data(port
->serial
), edge_port
);
1215 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__
,
1216 copySize
, edge_port
->txCredits
, fifo
->count
);
1222 /************************************************************************
1224 * send_more_port_data()
1226 * This routine attempts to write additional UART transmit data
1227 * to a port over the USB bulk pipe. It is called (1) when new
1228 * data has been written to a port's TxBuffer from higher layers
1229 * (2) when the peripheral sends us additional TxCredits indicating
1230 * that it can accept more Tx data for a given port; and (3) when
1231 * a bulk write completes successfully and we want to see if we
1232 * can transmit more.
1234 ************************************************************************/
1235 static void send_more_port_data(struct edgeport_serial
*edge_serial
,
1236 struct edgeport_port
*edge_port
)
1238 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1240 unsigned char *buffer
;
1246 unsigned long flags
;
1248 dbg("%s(%d)", __func__
, edge_port
->port
->number
);
1250 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1252 if (edge_port
->write_in_progress
||
1254 (fifo
->count
== 0)) {
1255 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d",
1256 __func__
, edge_port
->port
->number
,
1257 fifo
->count
, edge_port
->write_in_progress
);
1261 /* since the amount of data in the fifo will always fit into the
1262 * edgeport buffer we do not need to check the write length
1264 * Do we have enough credits for this port to make it worthwhile
1265 * to bother queueing a write. If it's too small, say a few bytes,
1266 * it's better to wait for more credits so we can do a larger write.
1268 if (edge_port
->txCredits
< EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port
->maxTxCredits
, EDGE_FW_BULK_MAX_PACKET_SIZE
)) {
1269 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d",
1270 __func__
, edge_port
->port
->number
, fifo
->count
,
1271 edge_port
->txCredits
);
1275 /* lock this write */
1276 edge_port
->write_in_progress
= true;
1278 /* get a pointer to the write_urb */
1279 urb
= edge_port
->write_urb
;
1281 /* make sure transfer buffer is freed */
1282 kfree(urb
->transfer_buffer
);
1283 urb
->transfer_buffer
= NULL
;
1285 /* build the data header for the buffer and port that we are about
1287 count
= fifo
->count
;
1288 buffer
= kmalloc(count
+2, GFP_ATOMIC
);
1289 if (buffer
== NULL
) {
1290 dev_err_console(edge_port
->port
,
1291 "%s - no more kernel memory...\n", __func__
);
1292 edge_port
->write_in_progress
= false;
1295 buffer
[0] = IOSP_BUILD_DATA_HDR1(edge_port
->port
->number
1296 - edge_port
->port
->serial
->minor
, count
);
1297 buffer
[1] = IOSP_BUILD_DATA_HDR2(edge_port
->port
->number
1298 - edge_port
->port
->serial
->minor
, count
);
1300 /* now copy our data */
1301 bytesleft
= fifo
->size
- fifo
->tail
;
1302 firsthalf
= min(bytesleft
, count
);
1303 memcpy(&buffer
[2], &fifo
->fifo
[fifo
->tail
], firsthalf
);
1304 fifo
->tail
+= firsthalf
;
1305 fifo
->count
-= firsthalf
;
1306 if (fifo
->tail
== fifo
->size
)
1309 secondhalf
= count
-firsthalf
;
1311 memcpy(&buffer
[2+firsthalf
], &fifo
->fifo
[fifo
->tail
],
1313 fifo
->tail
+= secondhalf
;
1314 fifo
->count
-= secondhalf
;
1318 usb_serial_debug_data(debug
, &edge_port
->port
->dev
,
1319 __func__
, count
, &buffer
[2]);
1321 /* fill up the urb with all of our data and submit it */
1322 usb_fill_bulk_urb(urb
, edge_serial
->serial
->dev
,
1323 usb_sndbulkpipe(edge_serial
->serial
->dev
,
1324 edge_serial
->bulk_out_endpoint
),
1326 edge_bulk_out_data_callback
, edge_port
);
1328 /* decrement the number of credits we have by the number we just sent */
1329 edge_port
->txCredits
-= count
;
1330 edge_port
->icount
.tx
+= count
;
1332 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
1334 /* something went wrong */
1335 dev_err_console(edge_port
->port
,
1336 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1338 edge_port
->write_in_progress
= false;
1340 /* revert the credits as something bad happened. */
1341 edge_port
->txCredits
+= count
;
1342 edge_port
->icount
.tx
-= count
;
1344 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d",
1345 __func__
, count
, edge_port
->txCredits
, fifo
->count
);
1348 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1352 /*****************************************************************************
1354 * this function is called by the tty driver when it wants to know how
1355 * many bytes of data we can accept for a specific port. If successful,
1356 * we return the amount of room that we have for this port (the txCredits)
1357 * otherwise we return a negative error number.
1358 *****************************************************************************/
1359 static int edge_write_room(struct tty_struct
*tty
)
1361 struct usb_serial_port
*port
= tty
->driver_data
;
1362 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1364 unsigned long flags
;
1366 dbg("%s", __func__
);
1368 if (edge_port
== NULL
)
1370 if (edge_port
->closePending
)
1373 dbg("%s - port %d", __func__
, port
->number
);
1375 if (!edge_port
->open
) {
1376 dbg("%s - port not opened", __func__
);
1380 /* total of both buffers is still txCredit */
1381 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1382 room
= edge_port
->txCredits
- edge_port
->txfifo
.count
;
1383 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1385 dbg("%s - returns %d", __func__
, room
);
1390 /*****************************************************************************
1391 * edge_chars_in_buffer
1392 * this function is called by the tty driver when it wants to know how
1393 * many bytes of data we currently have outstanding in the port (data that
1394 * has been written, but hasn't made it out the port yet)
1395 * If successful, we return the number of bytes left to be written in the
1397 * Otherwise we return a negative error number.
1398 *****************************************************************************/
1399 static int edge_chars_in_buffer(struct tty_struct
*tty
)
1401 struct usb_serial_port
*port
= tty
->driver_data
;
1402 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1404 unsigned long flags
;
1406 dbg("%s", __func__
);
1408 if (edge_port
== NULL
)
1410 if (edge_port
->closePending
)
1413 if (!edge_port
->open
) {
1414 dbg("%s - port not opened", __func__
);
1418 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1419 num_chars
= edge_port
->maxTxCredits
- edge_port
->txCredits
+
1420 edge_port
->txfifo
.count
;
1421 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1423 dbg("%s(port %d) - returns %d", __func__
,
1424 port
->number
, num_chars
);
1431 /*****************************************************************************
1433 * this function is called by the tty driver when it wants to stop the data
1434 * being read from the port.
1435 *****************************************************************************/
1436 static void edge_throttle(struct tty_struct
*tty
)
1438 struct usb_serial_port
*port
= tty
->driver_data
;
1439 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1442 dbg("%s - port %d", __func__
, port
->number
);
1444 if (edge_port
== NULL
)
1447 if (!edge_port
->open
) {
1448 dbg("%s - port not opened", __func__
);
1452 /* if we are implementing XON/XOFF, send the stop character */
1454 unsigned char stop_char
= STOP_CHAR(tty
);
1455 status
= edge_write(tty
, port
, &stop_char
, 1);
1460 /* if we are implementing RTS/CTS, toggle that line */
1461 if (tty
->termios
.c_cflag
& CRTSCTS
) {
1462 edge_port
->shadowMCR
&= ~MCR_RTS
;
1463 status
= send_cmd_write_uart_register(edge_port
, MCR
,
1464 edge_port
->shadowMCR
);
1471 /*****************************************************************************
1473 * this function is called by the tty driver when it wants to resume the
1474 * data being read from the port (called after SerialThrottle is called)
1475 *****************************************************************************/
1476 static void edge_unthrottle(struct tty_struct
*tty
)
1478 struct usb_serial_port
*port
= tty
->driver_data
;
1479 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1482 dbg("%s - port %d", __func__
, port
->number
);
1484 if (edge_port
== NULL
)
1487 if (!edge_port
->open
) {
1488 dbg("%s - port not opened", __func__
);
1492 /* if we are implementing XON/XOFF, send the start character */
1494 unsigned char start_char
= START_CHAR(tty
);
1495 status
= edge_write(tty
, port
, &start_char
, 1);
1499 /* if we are implementing RTS/CTS, toggle that line */
1500 if (tty
->termios
.c_cflag
& CRTSCTS
) {
1501 edge_port
->shadowMCR
|= MCR_RTS
;
1502 send_cmd_write_uart_register(edge_port
, MCR
,
1503 edge_port
->shadowMCR
);
1508 /*****************************************************************************
1510 * this function is called by the tty driver when it wants to change
1511 * the termios structure
1512 *****************************************************************************/
1513 static void edge_set_termios(struct tty_struct
*tty
,
1514 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
1516 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1519 cflag
= tty
->termios
.c_cflag
;
1520 dbg("%s - clfag %08x iflag %08x", __func__
,
1521 tty
->termios
.c_cflag
, tty
->termios
.c_iflag
);
1522 dbg("%s - old clfag %08x old iflag %08x", __func__
,
1523 old_termios
->c_cflag
, old_termios
->c_iflag
);
1525 dbg("%s - port %d", __func__
, port
->number
);
1527 if (edge_port
== NULL
)
1530 if (!edge_port
->open
) {
1531 dbg("%s - port not opened", __func__
);
1535 /* change the port settings to the new ones specified */
1536 change_port_settings(tty
, edge_port
, old_termios
);
1540 /*****************************************************************************
1541 * get_lsr_info - get line status register info
1543 * Purpose: Let user call ioctl() to get info when the UART physically
1544 * is emptied. On bus types like RS485, the transmitter must
1545 * release the bus after transmitting. This must be done when
1546 * the transmit shift register is empty, not be done when the
1547 * transmit holding register is empty. This functionality
1548 * allows an RS485 driver to be written in user space.
1549 *****************************************************************************/
1550 static int get_lsr_info(struct edgeport_port
*edge_port
,
1551 unsigned int __user
*value
)
1553 unsigned int result
= 0;
1554 unsigned long flags
;
1556 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1557 if (edge_port
->maxTxCredits
== edge_port
->txCredits
&&
1558 edge_port
->txfifo
.count
== 0) {
1559 dbg("%s -- Empty", __func__
);
1560 result
= TIOCSER_TEMT
;
1562 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1564 if (copy_to_user(value
, &result
, sizeof(int)))
1569 static int edge_tiocmset(struct tty_struct
*tty
,
1570 unsigned int set
, unsigned int clear
)
1572 struct usb_serial_port
*port
= tty
->driver_data
;
1573 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1576 dbg("%s - port %d", __func__
, port
->number
);
1578 mcr
= edge_port
->shadowMCR
;
1579 if (set
& TIOCM_RTS
)
1581 if (set
& TIOCM_DTR
)
1583 if (set
& TIOCM_LOOP
)
1584 mcr
|= MCR_LOOPBACK
;
1586 if (clear
& TIOCM_RTS
)
1588 if (clear
& TIOCM_DTR
)
1590 if (clear
& TIOCM_LOOP
)
1591 mcr
&= ~MCR_LOOPBACK
;
1593 edge_port
->shadowMCR
= mcr
;
1595 send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1600 static int edge_tiocmget(struct tty_struct
*tty
)
1602 struct usb_serial_port
*port
= tty
->driver_data
;
1603 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1604 unsigned int result
= 0;
1608 dbg("%s - port %d", __func__
, port
->number
);
1610 msr
= edge_port
->shadowMSR
;
1611 mcr
= edge_port
->shadowMCR
;
1612 result
= ((mcr
& MCR_DTR
) ? TIOCM_DTR
: 0) /* 0x002 */
1613 | ((mcr
& MCR_RTS
) ? TIOCM_RTS
: 0) /* 0x004 */
1614 | ((msr
& EDGEPORT_MSR_CTS
) ? TIOCM_CTS
: 0) /* 0x020 */
1615 | ((msr
& EDGEPORT_MSR_CD
) ? TIOCM_CAR
: 0) /* 0x040 */
1616 | ((msr
& EDGEPORT_MSR_RI
) ? TIOCM_RI
: 0) /* 0x080 */
1617 | ((msr
& EDGEPORT_MSR_DSR
) ? TIOCM_DSR
: 0); /* 0x100 */
1620 dbg("%s -- %x", __func__
, result
);
1625 static int edge_get_icount(struct tty_struct
*tty
,
1626 struct serial_icounter_struct
*icount
)
1628 struct usb_serial_port
*port
= tty
->driver_data
;
1629 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1630 struct async_icount cnow
;
1631 cnow
= edge_port
->icount
;
1633 icount
->cts
= cnow
.cts
;
1634 icount
->dsr
= cnow
.dsr
;
1635 icount
->rng
= cnow
.rng
;
1636 icount
->dcd
= cnow
.dcd
;
1637 icount
->rx
= cnow
.rx
;
1638 icount
->tx
= cnow
.tx
;
1639 icount
->frame
= cnow
.frame
;
1640 icount
->overrun
= cnow
.overrun
;
1641 icount
->parity
= cnow
.parity
;
1642 icount
->brk
= cnow
.brk
;
1643 icount
->buf_overrun
= cnow
.buf_overrun
;
1645 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d",
1646 __func__
, port
->number
, icount
->rx
, icount
->tx
);
1650 static int get_serial_info(struct edgeport_port
*edge_port
,
1651 struct serial_struct __user
*retinfo
)
1653 struct serial_struct tmp
;
1658 memset(&tmp
, 0, sizeof(tmp
));
1660 tmp
.type
= PORT_16550A
;
1661 tmp
.line
= edge_port
->port
->serial
->minor
;
1662 tmp
.port
= edge_port
->port
->number
;
1664 tmp
.flags
= ASYNC_SKIP_TEST
| ASYNC_AUTO_IRQ
;
1665 tmp
.xmit_fifo_size
= edge_port
->maxTxCredits
;
1666 tmp
.baud_base
= 9600;
1667 tmp
.close_delay
= 5*HZ
;
1668 tmp
.closing_wait
= 30*HZ
;
1670 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
1676 /*****************************************************************************
1678 * this function handles any ioctl calls to the driver
1679 *****************************************************************************/
1680 static int edge_ioctl(struct tty_struct
*tty
,
1681 unsigned int cmd
, unsigned long arg
)
1683 struct usb_serial_port
*port
= tty
->driver_data
;
1685 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1686 struct async_icount cnow
;
1687 struct async_icount cprev
;
1689 dbg("%s - port %d, cmd = 0x%x", __func__
, port
->number
, cmd
);
1693 dbg("%s (%d) TIOCSERGETLSR", __func__
, port
->number
);
1694 return get_lsr_info(edge_port
, (unsigned int __user
*) arg
);
1697 dbg("%s (%d) TIOCGSERIAL", __func__
, port
->number
);
1698 return get_serial_info(edge_port
, (struct serial_struct __user
*) arg
);
1701 dbg("%s (%d) TIOCMIWAIT", __func__
, port
->number
);
1702 cprev
= edge_port
->icount
;
1704 prepare_to_wait(&edge_port
->delta_msr_wait
,
1705 &wait
, TASK_INTERRUPTIBLE
);
1707 finish_wait(&edge_port
->delta_msr_wait
, &wait
);
1708 /* see if a signal did it */
1709 if (signal_pending(current
))
1710 return -ERESTARTSYS
;
1711 cnow
= edge_port
->icount
;
1712 if (cnow
.rng
== cprev
.rng
&& cnow
.dsr
== cprev
.dsr
&&
1713 cnow
.dcd
== cprev
.dcd
&& cnow
.cts
== cprev
.cts
)
1714 return -EIO
; /* no change => error */
1715 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1716 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1717 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
1718 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
))) {
1727 return -ENOIOCTLCMD
;
1731 /*****************************************************************************
1733 * this function sends a break to the port
1734 *****************************************************************************/
1735 static void edge_break(struct tty_struct
*tty
, int break_state
)
1737 struct usb_serial_port
*port
= tty
->driver_data
;
1738 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1739 struct edgeport_serial
*edge_serial
= usb_get_serial_data(port
->serial
);
1742 if ((!edge_serial
->is_epic
) ||
1743 ((edge_serial
->is_epic
) &&
1744 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1745 /* flush and chase */
1746 edge_port
->chaseResponsePending
= true;
1748 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__
);
1749 status
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1751 /* block until chase finished */
1752 block_until_chase_response(edge_port
);
1754 edge_port
->chaseResponsePending
= false;
1758 if ((!edge_serial
->is_epic
) ||
1759 ((edge_serial
->is_epic
) &&
1760 (edge_serial
->epic_descriptor
.Supports
.IOSPSetClrBreak
))) {
1761 if (break_state
== -1) {
1762 dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__
);
1763 status
= send_iosp_ext_cmd(edge_port
,
1764 IOSP_CMD_SET_BREAK
, 0);
1766 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__
);
1767 status
= send_iosp_ext_cmd(edge_port
,
1768 IOSP_CMD_CLEAR_BREAK
, 0);
1771 dbg("%s - error sending break set/clear command.",
1777 /*****************************************************************************
1779 * this function handles the data received on the bulk in pipe.
1780 *****************************************************************************/
1781 static void process_rcvd_data(struct edgeport_serial
*edge_serial
,
1782 unsigned char *buffer
, __u16 bufferLength
)
1784 struct usb_serial_port
*port
;
1785 struct edgeport_port
*edge_port
;
1786 struct tty_struct
*tty
;
1787 __u16 lastBufferLength
;
1790 dbg("%s", __func__
);
1792 lastBufferLength
= bufferLength
+ 1;
1794 while (bufferLength
> 0) {
1795 /* failsafe incase we get a message that we don't understand */
1796 if (lastBufferLength
== bufferLength
) {
1797 dbg("%s - stuck in loop, exiting it.", __func__
);
1800 lastBufferLength
= bufferLength
;
1802 switch (edge_serial
->rxState
) {
1804 edge_serial
->rxHeader1
= *buffer
;
1808 if (bufferLength
== 0) {
1809 edge_serial
->rxState
= EXPECT_HDR2
;
1812 /* otherwise, drop on through */
1814 edge_serial
->rxHeader2
= *buffer
;
1818 dbg("%s - Hdr1=%02X Hdr2=%02X", __func__
,
1819 edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1820 /* Process depending on whether this header is
1823 if (IS_CMD_STAT_HDR(edge_serial
->rxHeader1
)) {
1824 /* Decode this status header and go to
1825 * EXPECT_HDR1 (if we can process the status
1826 * with only 2 bytes), or go to EXPECT_HDR3 to
1827 * get the third byte. */
1828 edge_serial
->rxPort
=
1829 IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1830 edge_serial
->rxStatusCode
=
1831 IOSP_GET_STATUS_CODE(
1832 edge_serial
->rxHeader1
);
1834 if (!IOSP_STATUS_IS_2BYTE(
1835 edge_serial
->rxStatusCode
)) {
1836 /* This status needs additional bytes.
1837 * Save what we have and then wait for
1840 edge_serial
->rxStatusParam
1841 = edge_serial
->rxHeader2
;
1842 edge_serial
->rxState
= EXPECT_HDR3
;
1845 /* We have all the header bytes, process the
1847 process_rcvd_status(edge_serial
,
1848 edge_serial
->rxHeader2
, 0);
1849 edge_serial
->rxState
= EXPECT_HDR1
;
1852 edge_serial
->rxPort
=
1853 IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1854 edge_serial
->rxBytesRemaining
=
1855 IOSP_GET_HDR_DATA_LEN(
1856 edge_serial
->rxHeader1
,
1857 edge_serial
->rxHeader2
);
1858 dbg("%s - Data for Port %u Len %u",
1860 edge_serial
->rxPort
,
1861 edge_serial
->rxBytesRemaining
);
1863 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1864 * ASSERT(DevExt->RxBytesRemaining <
1865 * IOSP_MAX_DATA_LENGTH);
1868 if (bufferLength
== 0) {
1869 edge_serial
->rxState
= EXPECT_DATA
;
1872 /* Else, drop through */
1874 case EXPECT_DATA
: /* Expect data */
1875 if (bufferLength
< edge_serial
->rxBytesRemaining
) {
1876 rxLen
= bufferLength
;
1877 /* Expect data to start next buffer */
1878 edge_serial
->rxState
= EXPECT_DATA
;
1880 /* BufLen >= RxBytesRemaining */
1881 rxLen
= edge_serial
->rxBytesRemaining
;
1882 /* Start another header next time */
1883 edge_serial
->rxState
= EXPECT_HDR1
;
1886 bufferLength
-= rxLen
;
1887 edge_serial
->rxBytesRemaining
-= rxLen
;
1889 /* spit this data back into the tty driver if this
1892 port
= edge_serial
->serial
->port
[
1893 edge_serial
->rxPort
];
1894 edge_port
= usb_get_serial_port_data(port
);
1895 if (edge_port
->open
) {
1896 tty
= tty_port_tty_get(
1897 &edge_port
->port
->port
);
1899 dbg("%s - Sending %d bytes to TTY for port %d",
1900 __func__
, rxLen
, edge_serial
->rxPort
);
1901 edge_tty_recv(&edge_serial
->serial
->dev
->dev
, tty
, buffer
, rxLen
);
1904 edge_port
->icount
.rx
+= rxLen
;
1910 case EXPECT_HDR3
: /* Expect 3rd byte of status header */
1911 edge_serial
->rxHeader3
= *buffer
;
1915 /* We have all the header bytes, process the
1917 process_rcvd_status(edge_serial
,
1918 edge_serial
->rxStatusParam
,
1919 edge_serial
->rxHeader3
);
1920 edge_serial
->rxState
= EXPECT_HDR1
;
1927 /*****************************************************************************
1928 * process_rcvd_status
1929 * this function handles the any status messages received on the
1931 *****************************************************************************/
1932 static void process_rcvd_status(struct edgeport_serial
*edge_serial
,
1933 __u8 byte2
, __u8 byte3
)
1935 struct usb_serial_port
*port
;
1936 struct edgeport_port
*edge_port
;
1937 struct tty_struct
*tty
;
1938 __u8 code
= edge_serial
->rxStatusCode
;
1940 /* switch the port pointer to the one being currently talked about */
1941 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1942 edge_port
= usb_get_serial_port_data(port
);
1943 if (edge_port
== NULL
) {
1944 dev_err(&edge_serial
->serial
->dev
->dev
,
1945 "%s - edge_port == NULL for port %d\n",
1946 __func__
, edge_serial
->rxPort
);
1950 dbg("%s - port %d", __func__
, edge_serial
->rxPort
);
1952 if (code
== IOSP_EXT_STATUS
) {
1954 case IOSP_EXT_STATUS_CHASE_RSP
:
1955 /* we want to do EXT status regardless of port
1957 dbg("%s - Port %u EXT CHASE_RSP Data = %02x",
1958 __func__
, edge_serial
->rxPort
, byte3
);
1959 /* Currently, the only EXT_STATUS is Chase, so process
1960 * here instead of one more call to one more subroutine
1961 * If/when more EXT_STATUS, there'll be more work to do
1962 * Also, we currently clear flag and close the port
1963 * regardless of content of above's Byte3.
1964 * We could choose to do something else when Byte3 says
1965 * Timeout on Chase from Edgeport, like wait longer in
1966 * block_until_chase_response, but for now we don't.
1968 edge_port
->chaseResponsePending
= false;
1969 wake_up(&edge_port
->wait_chase
);
1972 case IOSP_EXT_STATUS_RX_CHECK_RSP
:
1973 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============", __func__
, edge_serial
->rxPort
, byte3
);
1974 /* Port->RxCheckRsp = true; */
1979 if (code
== IOSP_STATUS_OPEN_RSP
) {
1980 edge_port
->txCredits
= GET_TX_BUFFER_SIZE(byte3
);
1981 edge_port
->maxTxCredits
= edge_port
->txCredits
;
1982 dbg("%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d", __func__
, edge_serial
->rxPort
, byte2
, edge_port
->txCredits
);
1983 handle_new_msr(edge_port
, byte2
);
1985 /* send the current line settings to the port so we are
1986 in sync with any further termios calls */
1987 tty
= tty_port_tty_get(&edge_port
->port
->port
);
1989 change_port_settings(tty
,
1990 edge_port
, &tty
->termios
);
1994 /* we have completed the open */
1995 edge_port
->openPending
= false;
1996 edge_port
->open
= true;
1997 wake_up(&edge_port
->wait_open
);
2001 /* If port is closed, silently discard all rcvd status. We can
2002 * have cases where buffered status is received AFTER the close
2003 * port command is sent to the Edgeport.
2005 if (!edge_port
->open
|| edge_port
->closePending
)
2009 /* Not currently sent by Edgeport */
2010 case IOSP_STATUS_LSR
:
2011 dbg("%s - Port %u LSR Status = %02x",
2012 __func__
, edge_serial
->rxPort
, byte2
);
2013 handle_new_lsr(edge_port
, false, byte2
, 0);
2016 case IOSP_STATUS_LSR_DATA
:
2017 dbg("%s - Port %u LSR Status = %02x, Data = %02x",
2018 __func__
, edge_serial
->rxPort
, byte2
, byte3
);
2019 /* byte2 is LSR Register */
2020 /* byte3 is broken data byte */
2021 handle_new_lsr(edge_port
, true, byte2
, byte3
);
2024 * case IOSP_EXT_4_STATUS:
2025 * dbg("%s - Port %u LSR Status = %02x Data = %02x",
2026 * __func__, edge_serial->rxPort, byte2, byte3);
2029 case IOSP_STATUS_MSR
:
2030 dbg("%s - Port %u MSR Status = %02x",
2031 __func__
, edge_serial
->rxPort
, byte2
);
2033 * Process this new modem status and generate appropriate
2034 * events, etc, based on the new status. This routine
2035 * also saves the MSR in Port->ShadowMsr.
2037 handle_new_msr(edge_port
, byte2
);
2041 dbg("%s - Unrecognized IOSP status code %u", __func__
, code
);
2047 /*****************************************************************************
2049 * this function passes data on to the tty flip buffer
2050 *****************************************************************************/
2051 static void edge_tty_recv(struct device
*dev
, struct tty_struct
*tty
,
2052 unsigned char *data
, int length
)
2056 cnt
= tty_insert_flip_string(tty
, data
, length
);
2058 dev_err(dev
, "%s - dropping data, %d bytes lost\n",
2059 __func__
, length
- cnt
);
2064 tty_flip_buffer_push(tty
);
2068 /*****************************************************************************
2070 * this function handles any change to the msr register for a port.
2071 *****************************************************************************/
2072 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
)
2074 struct async_icount
*icount
;
2076 dbg("%s %02x", __func__
, newMsr
);
2078 if (newMsr
& (EDGEPORT_MSR_DELTA_CTS
| EDGEPORT_MSR_DELTA_DSR
|
2079 EDGEPORT_MSR_DELTA_RI
| EDGEPORT_MSR_DELTA_CD
)) {
2080 icount
= &edge_port
->icount
;
2082 /* update input line counters */
2083 if (newMsr
& EDGEPORT_MSR_DELTA_CTS
)
2085 if (newMsr
& EDGEPORT_MSR_DELTA_DSR
)
2087 if (newMsr
& EDGEPORT_MSR_DELTA_CD
)
2089 if (newMsr
& EDGEPORT_MSR_DELTA_RI
)
2091 wake_up_interruptible(&edge_port
->delta_msr_wait
);
2094 /* Save the new modem status */
2095 edge_port
->shadowMSR
= newMsr
& 0xf0;
2099 /*****************************************************************************
2101 * this function handles any change to the lsr register for a port.
2102 *****************************************************************************/
2103 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
,
2104 __u8 lsr
, __u8 data
)
2106 __u8 newLsr
= (__u8
) (lsr
& (__u8
)
2107 (LSR_OVER_ERR
| LSR_PAR_ERR
| LSR_FRM_ERR
| LSR_BREAK
));
2108 struct async_icount
*icount
;
2110 dbg("%s - %02x", __func__
, newLsr
);
2112 edge_port
->shadowLSR
= lsr
;
2114 if (newLsr
& LSR_BREAK
) {
2116 * Parity and Framing errors only count if they
2117 * occur exclusive of a break being
2120 newLsr
&= (__u8
)(LSR_OVER_ERR
| LSR_BREAK
);
2123 /* Place LSR data byte into Rx buffer */
2125 struct tty_struct
*tty
=
2126 tty_port_tty_get(&edge_port
->port
->port
);
2128 edge_tty_recv(&edge_port
->port
->dev
, tty
, &data
, 1);
2132 /* update input line counters */
2133 icount
= &edge_port
->icount
;
2134 if (newLsr
& LSR_BREAK
)
2136 if (newLsr
& LSR_OVER_ERR
)
2138 if (newLsr
& LSR_PAR_ERR
)
2140 if (newLsr
& LSR_FRM_ERR
)
2145 /****************************************************************************
2147 * writes a number of bytes to the Edgeport device's sram starting at the
2149 * If successful returns the number of bytes written, otherwise it returns
2150 * a negative error number of the problem.
2151 ****************************************************************************/
2152 static int sram_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
2153 __u16 length
, const __u8
*data
)
2156 __u16 current_length
;
2157 unsigned char *transfer_buffer
;
2159 dbg("%s - %x, %x, %d", __func__
, extAddr
, addr
, length
);
2161 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2162 if (!transfer_buffer
) {
2163 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n",
2168 /* need to split these writes up into 64 byte chunks */
2170 while (length
> 0) {
2172 current_length
= 64;
2174 current_length
= length
;
2176 /* dbg("%s - writing %x, %x, %d", __func__,
2177 extAddr, addr, current_length); */
2178 memcpy(transfer_buffer
, data
, current_length
);
2179 result
= usb_control_msg(serial
->dev
,
2180 usb_sndctrlpipe(serial
->dev
, 0),
2181 USB_REQUEST_ION_WRITE_RAM
,
2182 0x40, addr
, extAddr
, transfer_buffer
,
2183 current_length
, 300);
2186 length
-= current_length
;
2187 addr
+= current_length
;
2188 data
+= current_length
;
2191 kfree(transfer_buffer
);
2196 /****************************************************************************
2198 * writes a number of bytes to the Edgeport device's ROM starting at the
2200 * If successful returns the number of bytes written, otherwise it returns
2201 * a negative error number of the problem.
2202 ****************************************************************************/
2203 static int rom_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
2204 __u16 length
, const __u8
*data
)
2207 __u16 current_length
;
2208 unsigned char *transfer_buffer
;
2210 /* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */
2212 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2213 if (!transfer_buffer
) {
2214 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n",
2219 /* need to split these writes up into 64 byte chunks */
2221 while (length
> 0) {
2223 current_length
= 64;
2225 current_length
= length
;
2226 /* dbg("%s - writing %x, %x, %d", __func__,
2227 extAddr, addr, current_length); */
2228 memcpy(transfer_buffer
, data
, current_length
);
2229 result
= usb_control_msg(serial
->dev
,
2230 usb_sndctrlpipe(serial
->dev
, 0),
2231 USB_REQUEST_ION_WRITE_ROM
, 0x40,
2233 transfer_buffer
, current_length
, 300);
2236 length
-= current_length
;
2237 addr
+= current_length
;
2238 data
+= current_length
;
2241 kfree(transfer_buffer
);
2246 /****************************************************************************
2248 * reads a number of bytes from the Edgeport device starting at the given
2250 * If successful returns the number of bytes read, otherwise it returns
2251 * a negative error number of the problem.
2252 ****************************************************************************/
2253 static int rom_read(struct usb_serial
*serial
, __u16 extAddr
,
2254 __u16 addr
, __u16 length
, __u8
*data
)
2257 __u16 current_length
;
2258 unsigned char *transfer_buffer
;
2260 dbg("%s - %x, %x, %d", __func__
, extAddr
, addr
, length
);
2262 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2263 if (!transfer_buffer
) {
2264 dev_err(&serial
->dev
->dev
,
2265 "%s - kmalloc(%d) failed.\n", __func__
, 64);
2269 /* need to split these reads up into 64 byte chunks */
2271 while (length
> 0) {
2273 current_length
= 64;
2275 current_length
= length
;
2276 /* dbg("%s - %x, %x, %d", __func__,
2277 extAddr, addr, current_length); */
2278 result
= usb_control_msg(serial
->dev
,
2279 usb_rcvctrlpipe(serial
->dev
, 0),
2280 USB_REQUEST_ION_READ_ROM
,
2281 0xC0, addr
, extAddr
, transfer_buffer
,
2282 current_length
, 300);
2285 memcpy(data
, transfer_buffer
, current_length
);
2286 length
-= current_length
;
2287 addr
+= current_length
;
2288 data
+= current_length
;
2291 kfree(transfer_buffer
);
2296 /****************************************************************************
2298 * Is used to send a IOSP message to the Edgeport device
2299 ****************************************************************************/
2300 static int send_iosp_ext_cmd(struct edgeport_port
*edge_port
,
2301 __u8 command
, __u8 param
)
2303 unsigned char *buffer
;
2304 unsigned char *currentCommand
;
2308 dbg("%s - %d, %d", __func__
, command
, param
);
2310 buffer
= kmalloc(10, GFP_ATOMIC
);
2312 dev_err(&edge_port
->port
->dev
,
2313 "%s - kmalloc(%d) failed.\n", __func__
, 10);
2317 currentCommand
= buffer
;
2319 MAKE_CMD_EXT_CMD(¤tCommand
, &length
,
2320 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2323 status
= write_cmd_usb(edge_port
, buffer
, length
);
2325 /* something bad happened, let's free up the memory */
2333 /*****************************************************************************
2335 * this function writes the given buffer out to the bulk write endpoint.
2336 *****************************************************************************/
2337 static int write_cmd_usb(struct edgeport_port
*edge_port
,
2338 unsigned char *buffer
, int length
)
2340 struct edgeport_serial
*edge_serial
=
2341 usb_get_serial_data(edge_port
->port
->serial
);
2345 usb_serial_debug_data(debug
, &edge_port
->port
->dev
,
2346 __func__
, length
, buffer
);
2348 /* Allocate our next urb */
2349 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
2353 atomic_inc(&CmdUrbs
);
2354 dbg("%s - ALLOCATE URB %p (outstanding %d)",
2355 __func__
, urb
, atomic_read(&CmdUrbs
));
2357 usb_fill_bulk_urb(urb
, edge_serial
->serial
->dev
,
2358 usb_sndbulkpipe(edge_serial
->serial
->dev
,
2359 edge_serial
->bulk_out_endpoint
),
2360 buffer
, length
, edge_bulk_out_cmd_callback
, edge_port
);
2362 edge_port
->commandPending
= true;
2363 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
2366 /* something went wrong */
2367 dev_err(&edge_port
->port
->dev
,
2368 "%s - usb_submit_urb(write command) failed, status = %d\n",
2372 atomic_dec(&CmdUrbs
);
2377 wait_event(&edge_port
->wait_command
, !edge_port
->commandPending
);
2379 if (edge_port
->commandPending
) {
2380 /* command timed out */
2381 dbg("%s - command timed out", __func__
);
2389 /*****************************************************************************
2390 * send_cmd_write_baud_rate
2391 * this function sends the proper command to change the baud rate of the
2393 *****************************************************************************/
2394 static int send_cmd_write_baud_rate(struct edgeport_port
*edge_port
,
2397 struct edgeport_serial
*edge_serial
=
2398 usb_get_serial_data(edge_port
->port
->serial
);
2399 unsigned char *cmdBuffer
;
2400 unsigned char *currCmd
;
2404 unsigned char number
=
2405 edge_port
->port
->number
- edge_port
->port
->serial
->minor
;
2407 if (edge_serial
->is_epic
&&
2408 !edge_serial
->epic_descriptor
.Supports
.IOSPSetBaudRate
) {
2409 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2410 edge_port
->port
->number
, baudRate
);
2414 dbg("%s - port = %d, baud = %d", __func__
,
2415 edge_port
->port
->number
, baudRate
);
2417 status
= calc_baud_rate_divisor(baudRate
, &divisor
);
2419 dev_err(&edge_port
->port
->dev
, "%s - bad baud rate\n",
2424 /* Alloc memory for the string of commands. */
2425 cmdBuffer
= kmalloc(0x100, GFP_ATOMIC
);
2427 dev_err(&edge_port
->port
->dev
,
2428 "%s - kmalloc(%d) failed.\n", __func__
, 0x100);
2431 currCmd
= cmdBuffer
;
2433 /* Enable access to divisor latch */
2434 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, LCR
, LCR_DL_ENABLE
);
2436 /* Write the divisor itself */
2437 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, DLL
, LOW8(divisor
));
2438 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, DLM
, HIGH8(divisor
));
2440 /* Restore original value to disable access to divisor latch */
2441 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, LCR
,
2442 edge_port
->shadowLCR
);
2444 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2446 /* something bad happened, let's free up the memory */
2454 /*****************************************************************************
2455 * calc_baud_rate_divisor
2456 * this function calculates the proper baud rate divisor for the specified
2458 *****************************************************************************/
2459 static int calc_baud_rate_divisor(int baudrate
, int *divisor
)
2465 dbg("%s - %d", __func__
, baudrate
);
2467 for (i
= 0; i
< ARRAY_SIZE(divisor_table
); i
++) {
2468 if (divisor_table
[i
].BaudRate
== baudrate
) {
2469 *divisor
= divisor_table
[i
].Divisor
;
2474 /* We have tried all of the standard baud rates
2475 * lets try to calculate the divisor for this baud rate
2476 * Make sure the baud rate is reasonable */
2477 if (baudrate
> 50 && baudrate
< 230400) {
2479 custom
= (__u16
)((230400L + baudrate
/2) / baudrate
);
2483 dbg("%s - Baud %d = %d", __func__
, baudrate
, custom
);
2491 /*****************************************************************************
2492 * send_cmd_write_uart_register
2493 * this function builds up a uart register message and sends to the device.
2494 *****************************************************************************/
2495 static int send_cmd_write_uart_register(struct edgeport_port
*edge_port
,
2496 __u8 regNum
, __u8 regValue
)
2498 struct edgeport_serial
*edge_serial
=
2499 usb_get_serial_data(edge_port
->port
->serial
);
2500 unsigned char *cmdBuffer
;
2501 unsigned char *currCmd
;
2502 unsigned long cmdLen
= 0;
2505 dbg("%s - write to %s register 0x%02x",
2506 (regNum
== MCR
) ? "MCR" : "LCR", __func__
, regValue
);
2508 if (edge_serial
->is_epic
&&
2509 !edge_serial
->epic_descriptor
.Supports
.IOSPWriteMCR
&&
2511 dbg("SendCmdWriteUartReg - Not writing to MCR Register");
2515 if (edge_serial
->is_epic
&&
2516 !edge_serial
->epic_descriptor
.Supports
.IOSPWriteLCR
&&
2518 dbg("SendCmdWriteUartReg - Not writing to LCR Register");
2522 /* Alloc memory for the string of commands. */
2523 cmdBuffer
= kmalloc(0x10, GFP_ATOMIC
);
2524 if (cmdBuffer
== NULL
)
2527 currCmd
= cmdBuffer
;
2529 /* Build a cmd in the buffer to write the given register */
2530 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
,
2531 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2534 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2536 /* something bad happened, let's free up the memory */
2544 /*****************************************************************************
2545 * change_port_settings
2546 * This routine is called to set the UART on the device to match the
2547 * specified new settings.
2548 *****************************************************************************/
2550 static void change_port_settings(struct tty_struct
*tty
,
2551 struct edgeport_port
*edge_port
, struct ktermios
*old_termios
)
2553 struct edgeport_serial
*edge_serial
=
2554 usb_get_serial_data(edge_port
->port
->serial
);
2565 dbg("%s - port %d", __func__
, edge_port
->port
->number
);
2567 if (!edge_port
->open
&&
2568 !edge_port
->openPending
) {
2569 dbg("%s - port not opened", __func__
);
2573 cflag
= tty
->termios
.c_cflag
;
2575 switch (cflag
& CSIZE
) {
2577 lData
= LCR_BITS_5
; mask
= 0x1f;
2578 dbg("%s - data bits = 5", __func__
);
2581 lData
= LCR_BITS_6
; mask
= 0x3f;
2582 dbg("%s - data bits = 6", __func__
);
2585 lData
= LCR_BITS_7
; mask
= 0x7f;
2586 dbg("%s - data bits = 7", __func__
);
2591 dbg("%s - data bits = 8", __func__
);
2595 lParity
= LCR_PAR_NONE
;
2596 if (cflag
& PARENB
) {
2597 if (cflag
& CMSPAR
) {
2598 if (cflag
& PARODD
) {
2599 lParity
= LCR_PAR_MARK
;
2600 dbg("%s - parity = mark", __func__
);
2602 lParity
= LCR_PAR_SPACE
;
2603 dbg("%s - parity = space", __func__
);
2605 } else if (cflag
& PARODD
) {
2606 lParity
= LCR_PAR_ODD
;
2607 dbg("%s - parity = odd", __func__
);
2609 lParity
= LCR_PAR_EVEN
;
2610 dbg("%s - parity = even", __func__
);
2613 dbg("%s - parity = none", __func__
);
2616 if (cflag
& CSTOPB
) {
2618 dbg("%s - stop bits = 2", __func__
);
2621 dbg("%s - stop bits = 1", __func__
);
2624 /* figure out the flow control settings */
2625 rxFlow
= txFlow
= 0x00;
2626 if (cflag
& CRTSCTS
) {
2627 rxFlow
|= IOSP_RX_FLOW_RTS
;
2628 txFlow
|= IOSP_TX_FLOW_CTS
;
2629 dbg("%s - RTS/CTS is enabled", __func__
);
2631 dbg("%s - RTS/CTS is disabled", __func__
);
2634 /* if we are implementing XON/XOFF, set the start and stop character
2636 if (I_IXOFF(tty
) || I_IXON(tty
)) {
2637 unsigned char stop_char
= STOP_CHAR(tty
);
2638 unsigned char start_char
= START_CHAR(tty
);
2640 if ((!edge_serial
->is_epic
) ||
2641 ((edge_serial
->is_epic
) &&
2642 (edge_serial
->epic_descriptor
.Supports
.IOSPSetXChar
))) {
2643 send_iosp_ext_cmd(edge_port
,
2644 IOSP_CMD_SET_XON_CHAR
, start_char
);
2645 send_iosp_ext_cmd(edge_port
,
2646 IOSP_CMD_SET_XOFF_CHAR
, stop_char
);
2649 /* if we are implementing INBOUND XON/XOFF */
2651 rxFlow
|= IOSP_RX_FLOW_XON_XOFF
;
2652 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2653 __func__
, start_char
, stop_char
);
2655 dbg("%s - INBOUND XON/XOFF is disabled", __func__
);
2658 /* if we are implementing OUTBOUND XON/XOFF */
2660 txFlow
|= IOSP_TX_FLOW_XON_XOFF
;
2661 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2662 __func__
, start_char
, stop_char
);
2664 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__
);
2668 /* Set flow control to the configured value */
2669 if ((!edge_serial
->is_epic
) ||
2670 ((edge_serial
->is_epic
) &&
2671 (edge_serial
->epic_descriptor
.Supports
.IOSPSetRxFlow
)))
2672 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_RX_FLOW
, rxFlow
);
2673 if ((!edge_serial
->is_epic
) ||
2674 ((edge_serial
->is_epic
) &&
2675 (edge_serial
->epic_descriptor
.Supports
.IOSPSetTxFlow
)))
2676 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_TX_FLOW
, txFlow
);
2679 edge_port
->shadowLCR
&= ~(LCR_BITS_MASK
| LCR_STOP_MASK
| LCR_PAR_MASK
);
2680 edge_port
->shadowLCR
|= (lData
| lParity
| lStop
);
2682 edge_port
->validDataMask
= mask
;
2684 /* Send the updated LCR value to the EdgePort */
2685 status
= send_cmd_write_uart_register(edge_port
, LCR
,
2686 edge_port
->shadowLCR
);
2690 /* set up the MCR register and send it to the EdgePort */
2691 edge_port
->shadowMCR
= MCR_MASTER_IE
;
2693 edge_port
->shadowMCR
|= (MCR_DTR
| MCR_RTS
);
2695 status
= send_cmd_write_uart_register(edge_port
, MCR
,
2696 edge_port
->shadowMCR
);
2700 /* Determine divisor based on baud rate */
2701 baud
= tty_get_baud_rate(tty
);
2703 /* pick a default, any default... */
2707 dbg("%s - baud rate = %d", __func__
, baud
);
2708 status
= send_cmd_write_baud_rate(edge_port
, baud
);
2710 /* Speed change was not possible - put back the old speed */
2711 baud
= tty_termios_baud_rate(old_termios
);
2712 tty_encode_baud_rate(tty
, baud
, baud
);
2717 /****************************************************************************
2719 * Turns a string from Unicode into ASCII.
2720 * Doesn't do a good job with any characters that are outside the normal
2721 * ASCII range, but it's only for debugging...
2722 * NOTE: expects the unicode in LE format
2723 ****************************************************************************/
2724 static void unicode_to_ascii(char *string
, int buflen
,
2725 __le16
*unicode
, int unicode_size
)
2729 if (buflen
<= 0) /* never happens, but... */
2731 --buflen
; /* space for nul */
2733 for (i
= 0; i
< unicode_size
; i
++) {
2736 string
[i
] = (char)(le16_to_cpu(unicode
[i
]));
2742 /****************************************************************************
2743 * get_manufacturing_desc
2744 * reads in the manufacturing descriptor and stores it into the serial
2746 ****************************************************************************/
2747 static void get_manufacturing_desc(struct edgeport_serial
*edge_serial
)
2751 dbg("getting manufacturer descriptor");
2753 response
= rom_read(edge_serial
->serial
,
2754 (EDGE_MANUF_DESC_ADDR
& 0xffff0000) >> 16,
2755 (__u16
)(EDGE_MANUF_DESC_ADDR
& 0x0000ffff),
2756 EDGE_MANUF_DESC_LEN
,
2757 (__u8
*)(&edge_serial
->manuf_descriptor
));
2760 dev_err(&edge_serial
->serial
->dev
->dev
,
2761 "error in getting manufacturer descriptor\n");
2764 dbg("**Manufacturer Descriptor");
2765 dbg(" RomSize: %dK",
2766 edge_serial
->manuf_descriptor
.RomSize
);
2767 dbg(" RamSize: %dK",
2768 edge_serial
->manuf_descriptor
.RamSize
);
2770 edge_serial
->manuf_descriptor
.CpuRev
);
2771 dbg(" BoardRev: %d",
2772 edge_serial
->manuf_descriptor
.BoardRev
);
2773 dbg(" NumPorts: %d",
2774 edge_serial
->manuf_descriptor
.NumPorts
);
2775 dbg(" DescDate: %d/%d/%d",
2776 edge_serial
->manuf_descriptor
.DescDate
[0],
2777 edge_serial
->manuf_descriptor
.DescDate
[1],
2778 edge_serial
->manuf_descriptor
.DescDate
[2]+1900);
2779 unicode_to_ascii(string
, sizeof(string
),
2780 edge_serial
->manuf_descriptor
.SerialNumber
,
2781 edge_serial
->manuf_descriptor
.SerNumLength
/2);
2782 dbg(" SerialNumber: %s", string
);
2783 unicode_to_ascii(string
, sizeof(string
),
2784 edge_serial
->manuf_descriptor
.AssemblyNumber
,
2785 edge_serial
->manuf_descriptor
.AssemblyNumLength
/2);
2786 dbg(" AssemblyNumber: %s", string
);
2787 unicode_to_ascii(string
, sizeof(string
),
2788 edge_serial
->manuf_descriptor
.OemAssyNumber
,
2789 edge_serial
->manuf_descriptor
.OemAssyNumLength
/2);
2790 dbg(" OemAssyNumber: %s", string
);
2791 dbg(" UartType: %d",
2792 edge_serial
->manuf_descriptor
.UartType
);
2794 edge_serial
->manuf_descriptor
.IonPid
);
2795 dbg(" IonConfig: %d",
2796 edge_serial
->manuf_descriptor
.IonConfig
);
2801 /****************************************************************************
2803 * reads in the bootloader descriptor and stores it into the serial
2805 ****************************************************************************/
2806 static void get_boot_desc(struct edgeport_serial
*edge_serial
)
2810 dbg("getting boot descriptor");
2812 response
= rom_read(edge_serial
->serial
,
2813 (EDGE_BOOT_DESC_ADDR
& 0xffff0000) >> 16,
2814 (__u16
)(EDGE_BOOT_DESC_ADDR
& 0x0000ffff),
2816 (__u8
*)(&edge_serial
->boot_descriptor
));
2819 dev_err(&edge_serial
->serial
->dev
->dev
,
2820 "error in getting boot descriptor\n");
2822 dbg("**Boot Descriptor:");
2823 dbg(" BootCodeLength: %d",
2824 le16_to_cpu(edge_serial
->boot_descriptor
.BootCodeLength
));
2825 dbg(" MajorVersion: %d",
2826 edge_serial
->boot_descriptor
.MajorVersion
);
2827 dbg(" MinorVersion: %d",
2828 edge_serial
->boot_descriptor
.MinorVersion
);
2829 dbg(" BuildNumber: %d",
2830 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
2831 dbg(" Capabilities: 0x%x",
2832 le16_to_cpu(edge_serial
->boot_descriptor
.Capabilities
));
2833 dbg(" UConfig0: %d",
2834 edge_serial
->boot_descriptor
.UConfig0
);
2835 dbg(" UConfig1: %d",
2836 edge_serial
->boot_descriptor
.UConfig1
);
2841 /****************************************************************************
2842 * load_application_firmware
2843 * This is called to load the application firmware to the device
2844 ****************************************************************************/
2845 static void load_application_firmware(struct edgeport_serial
*edge_serial
)
2847 const struct ihex_binrec
*rec
;
2848 const struct firmware
*fw
;
2849 const char *fw_name
;
2850 const char *fw_info
;
2855 switch (edge_serial
->product_info
.iDownloadFile
) {
2856 case EDGE_DOWNLOAD_FILE_I930
:
2857 fw_info
= "downloading firmware version (930)";
2858 fw_name
= "edgeport/down.fw";
2861 case EDGE_DOWNLOAD_FILE_80251
:
2862 fw_info
= "downloading firmware version (80251)";
2863 fw_name
= "edgeport/down2.fw";
2866 case EDGE_DOWNLOAD_FILE_NONE
:
2867 dbg("No download file specified, skipping download");
2874 response
= request_ihex_firmware(&fw
, fw_name
,
2875 &edge_serial
->serial
->dev
->dev
);
2877 printk(KERN_ERR
"Failed to load image \"%s\" err %d\n",
2882 rec
= (const struct ihex_binrec
*)fw
->data
;
2883 build
= (rec
->data
[2] << 8) | rec
->data
[3];
2885 dbg("%s %d.%d.%d", fw_info
, rec
->data
[0], rec
->data
[1], build
);
2887 edge_serial
->product_info
.FirmwareMajorVersion
= rec
->data
[0];
2888 edge_serial
->product_info
.FirmwareMinorVersion
= rec
->data
[1];
2889 edge_serial
->product_info
.FirmwareBuildNumber
= cpu_to_le16(build
);
2891 for (rec
= ihex_next_binrec(rec
); rec
;
2892 rec
= ihex_next_binrec(rec
)) {
2893 Operaddr
= be32_to_cpu(rec
->addr
);
2894 response
= sram_write(edge_serial
->serial
,
2897 be16_to_cpu(rec
->len
),
2900 dev_err(&edge_serial
->serial
->dev
->dev
,
2901 "sram_write failed (%x, %x, %d)\n",
2902 Operaddr
>> 16, Operaddr
& 0xFFFF,
2903 be16_to_cpu(rec
->len
));
2908 dbg("sending exec_dl_code");
2909 response
= usb_control_msg (edge_serial
->serial
->dev
,
2910 usb_sndctrlpipe(edge_serial
->serial
->dev
, 0),
2911 USB_REQUEST_ION_EXEC_DL_CODE
,
2912 0x40, 0x4000, 0x0001, NULL
, 0, 3000);
2914 release_firmware(fw
);
2918 /****************************************************************************
2920 ****************************************************************************/
2921 static int edge_startup(struct usb_serial
*serial
)
2923 struct edgeport_serial
*edge_serial
;
2924 struct edgeport_port
*edge_port
;
2925 struct usb_device
*dev
;
2928 bool interrupt_in_found
;
2930 bool bulk_out_found
;
2931 static __u32 descriptor
[3] = { EDGE_COMPATIBILITY_MASK0
,
2932 EDGE_COMPATIBILITY_MASK1
,
2933 EDGE_COMPATIBILITY_MASK2
};
2937 /* create our private serial structure */
2938 edge_serial
= kzalloc(sizeof(struct edgeport_serial
), GFP_KERNEL
);
2939 if (edge_serial
== NULL
) {
2940 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __func__
);
2943 spin_lock_init(&edge_serial
->es_lock
);
2944 edge_serial
->serial
= serial
;
2945 usb_set_serial_data(serial
, edge_serial
);
2947 /* get the name for the device from the device */
2948 i
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
2949 &edge_serial
->name
[0], MAX_NAME_LEN
+1);
2952 edge_serial
->name
[i
++] = ' ';
2953 usb_string(dev
, dev
->descriptor
.iProduct
,
2954 &edge_serial
->name
[i
], MAX_NAME_LEN
+2 - i
);
2956 dev_info(&serial
->dev
->dev
, "%s detected\n", edge_serial
->name
);
2958 /* Read the epic descriptor */
2959 if (get_epic_descriptor(edge_serial
) <= 0) {
2960 /* memcpy descriptor to Supports structures */
2961 memcpy(&edge_serial
->epic_descriptor
.Supports
, descriptor
,
2962 sizeof(struct edge_compatibility_bits
));
2964 /* get the manufacturing descriptor for this device */
2965 get_manufacturing_desc(edge_serial
);
2967 /* get the boot descriptor */
2968 get_boot_desc(edge_serial
);
2970 get_product_info(edge_serial
);
2973 /* set the number of ports from the manufacturing description */
2974 /* serial->num_ports = serial->product_info.NumPorts; */
2975 if ((!edge_serial
->is_epic
) &&
2976 (edge_serial
->product_info
.NumPorts
!= serial
->num_ports
)) {
2977 dev_warn(&serial
->dev
->dev
, "Device Reported %d serial ports "
2978 "vs. core thinking we have %d ports, email "
2979 "greg@kroah.com this information.\n",
2980 edge_serial
->product_info
.NumPorts
,
2984 dbg("%s - time 1 %ld", __func__
, jiffies
);
2986 /* If not an EPiC device */
2987 if (!edge_serial
->is_epic
) {
2988 /* now load the application firmware into this device */
2989 load_application_firmware(edge_serial
);
2991 dbg("%s - time 2 %ld", __func__
, jiffies
);
2993 /* Check current Edgeport EEPROM and update if necessary */
2994 update_edgeport_E2PROM(edge_serial
);
2996 dbg("%s - time 3 %ld", __func__
, jiffies
);
2998 /* set the configuration to use #1 */
2999 /* dbg("set_configuration 1"); */
3000 /* usb_set_configuration (dev, 1); */
3002 dbg(" FirmwareMajorVersion %d.%d.%d",
3003 edge_serial
->product_info
.FirmwareMajorVersion
,
3004 edge_serial
->product_info
.FirmwareMinorVersion
,
3005 le16_to_cpu(edge_serial
->product_info
.FirmwareBuildNumber
));
3007 /* we set up the pointers to the endpoints in the edge_open function,
3008 * as the structures aren't created yet. */
3010 /* set up our port private structures */
3011 for (i
= 0; i
< serial
->num_ports
; ++i
) {
3012 edge_port
= kzalloc(sizeof(struct edgeport_port
), GFP_KERNEL
);
3013 if (edge_port
== NULL
) {
3014 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n",
3016 for (j
= 0; j
< i
; ++j
) {
3017 kfree(usb_get_serial_port_data(serial
->port
[j
]));
3018 usb_set_serial_port_data(serial
->port
[j
],
3021 usb_set_serial_data(serial
, NULL
);
3025 spin_lock_init(&edge_port
->ep_lock
);
3026 edge_port
->port
= serial
->port
[i
];
3027 usb_set_serial_port_data(serial
->port
[i
], edge_port
);
3032 if (edge_serial
->is_epic
) {
3033 /* EPIC thing, set up our interrupt polling now and our read
3034 * urb, so that the device knows it really is connected. */
3035 interrupt_in_found
= bulk_in_found
= bulk_out_found
= false;
3036 for (i
= 0; i
< serial
->interface
->altsetting
[0]
3037 .desc
.bNumEndpoints
; ++i
) {
3038 struct usb_endpoint_descriptor
*endpoint
;
3041 endpoint
= &serial
->interface
->altsetting
[0].
3043 buffer_size
= usb_endpoint_maxp(endpoint
);
3044 if (!interrupt_in_found
&&
3045 (usb_endpoint_is_int_in(endpoint
))) {
3046 /* we found a interrupt in endpoint */
3047 dbg("found interrupt in");
3049 /* not set up yet, so do it now */
3050 edge_serial
->interrupt_read_urb
=
3051 usb_alloc_urb(0, GFP_KERNEL
);
3052 if (!edge_serial
->interrupt_read_urb
) {
3053 dev_err(&dev
->dev
, "out of memory\n");
3056 edge_serial
->interrupt_in_buffer
=
3057 kmalloc(buffer_size
, GFP_KERNEL
);
3058 if (!edge_serial
->interrupt_in_buffer
) {
3059 dev_err(&dev
->dev
, "out of memory\n");
3060 usb_free_urb(edge_serial
->interrupt_read_urb
);
3063 edge_serial
->interrupt_in_endpoint
=
3064 endpoint
->bEndpointAddress
;
3066 /* set up our interrupt urb */
3068 edge_serial
->interrupt_read_urb
,
3071 endpoint
->bEndpointAddress
),
3072 edge_serial
->interrupt_in_buffer
,
3074 edge_interrupt_callback
,
3076 endpoint
->bInterval
);
3078 interrupt_in_found
= true;
3081 if (!bulk_in_found
&&
3082 (usb_endpoint_is_bulk_in(endpoint
))) {
3083 /* we found a bulk in endpoint */
3084 dbg("found bulk in");
3086 /* not set up yet, so do it now */
3087 edge_serial
->read_urb
=
3088 usb_alloc_urb(0, GFP_KERNEL
);
3089 if (!edge_serial
->read_urb
) {
3090 dev_err(&dev
->dev
, "out of memory\n");
3093 edge_serial
->bulk_in_buffer
=
3094 kmalloc(buffer_size
, GFP_KERNEL
);
3095 if (!edge_serial
->bulk_in_buffer
) {
3096 dev_err(&dev
->dev
, "out of memory\n");
3097 usb_free_urb(edge_serial
->read_urb
);
3100 edge_serial
->bulk_in_endpoint
=
3101 endpoint
->bEndpointAddress
;
3103 /* set up our bulk in urb */
3104 usb_fill_bulk_urb(edge_serial
->read_urb
, dev
,
3105 usb_rcvbulkpipe(dev
,
3106 endpoint
->bEndpointAddress
),
3107 edge_serial
->bulk_in_buffer
,
3108 usb_endpoint_maxp(endpoint
),
3109 edge_bulk_in_callback
,
3111 bulk_in_found
= true;
3114 if (!bulk_out_found
&&
3115 (usb_endpoint_is_bulk_out(endpoint
))) {
3116 /* we found a bulk out endpoint */
3117 dbg("found bulk out");
3118 edge_serial
->bulk_out_endpoint
=
3119 endpoint
->bEndpointAddress
;
3120 bulk_out_found
= true;
3124 if (!interrupt_in_found
|| !bulk_in_found
|| !bulk_out_found
) {
3125 dev_err(&dev
->dev
, "Error - the proper endpoints "
3126 "were not found!\n");
3130 /* start interrupt read for this edgeport this interrupt will
3131 * continue as long as the edgeport is connected */
3132 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
,
3136 "%s - Error %d submitting control urb\n",
3137 __func__
, response
);
3143 /****************************************************************************
3145 * This function is called whenever the device is removed from the usb bus.
3146 ****************************************************************************/
3147 static void edge_disconnect(struct usb_serial
*serial
)
3149 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
3151 dbg("%s", __func__
);
3153 /* stop reads and writes on all ports */
3154 /* free up our endpoint stuff */
3155 if (edge_serial
->is_epic
) {
3156 usb_kill_urb(edge_serial
->interrupt_read_urb
);
3157 usb_free_urb(edge_serial
->interrupt_read_urb
);
3158 kfree(edge_serial
->interrupt_in_buffer
);
3160 usb_kill_urb(edge_serial
->read_urb
);
3161 usb_free_urb(edge_serial
->read_urb
);
3162 kfree(edge_serial
->bulk_in_buffer
);
3167 /****************************************************************************
3169 * This function is called when the device structure is deallocated.
3170 ****************************************************************************/
3171 static void edge_release(struct usb_serial
*serial
)
3173 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
3176 dbg("%s", __func__
);
3178 for (i
= 0; i
< serial
->num_ports
; ++i
)
3179 kfree(usb_get_serial_port_data(serial
->port
[i
]));
3184 module_usb_serial_driver(serial_drivers
, id_table_combined
);
3186 MODULE_AUTHOR(DRIVER_AUTHOR
);
3187 MODULE_DESCRIPTION(DRIVER_DESC
);
3188 MODULE_LICENSE("GPL");
3189 MODULE_FIRMWARE("edgeport/boot.fw");
3190 MODULE_FIRMWARE("edgeport/boot2.fw");
3191 MODULE_FIRMWARE("edgeport/down.fw");
3192 MODULE_FIRMWARE("edgeport/down2.fw");
3194 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
3195 MODULE_PARM_DESC(debug
, "Debug enabled or not");