2 * Edgeport USB Serial Converter driver
4 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * Supports the following devices:
26 * For questions or problems with this driver, contact Inside Out
27 * Networks technical support, or Peter Berger <pberger@brimson.com>,
28 * or Al Borchers <alborchers@steinerpoint.com>.
32 #include <linux/kernel.h>
33 #include <linux/jiffies.h>
34 #include <linux/errno.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/tty.h>
38 #include <linux/tty_driver.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/serial.h>
43 #include <linux/ioctl.h>
44 #include <linux/wait.h>
45 #include <linux/firmware.h>
46 #include <linux/ihex.h>
47 #include <linux/uaccess.h>
48 #include <linux/usb.h>
49 #include <linux/usb/serial.h>
50 #include "io_edgeport.h"
51 #include "io_ionsp.h" /* info for the iosp messages */
52 #include "io_16654.h" /* 16654 UART defines */
54 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
55 #define DRIVER_DESC "Edgeport USB Serial Driver"
57 #define MAX_NAME_LEN 64
59 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
60 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
61 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
63 /* receive port state */
65 EXPECT_HDR1
= 0, /* Expect header byte 1 */
66 EXPECT_HDR2
= 1, /* Expect header byte 2 */
67 EXPECT_DATA
= 2, /* Expect 'RxBytesRemaining' data */
68 EXPECT_HDR3
= 3, /* Expect header byte 3 (for status hdrs only) */
73 * This Transmit queue is an extension of the edgeport Rx buffer.
74 * The maximum amount of data buffered in both the edgeport
75 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
78 unsigned int head
; /* index to head pointer (write) */
79 unsigned int tail
; /* index to tail pointer (read) */
80 unsigned int count
; /* Bytes in queue */
81 unsigned int size
; /* Max size of queue (equal to Max number of TxCredits) */
82 unsigned char *fifo
; /* allocated Buffer */
85 /* This structure holds all of the local port information */
86 struct edgeport_port
{
87 __u16 txCredits
; /* our current credits for this port */
88 __u16 maxTxCredits
; /* the max size of the port */
90 struct TxFifo txfifo
; /* transmit fifo -- size will be maxTxCredits */
91 struct urb
*write_urb
; /* write URB for this port */
92 bool write_in_progress
; /* 'true' while a write URB is outstanding */
95 __u8 shadowLCR
; /* last LCR value received */
96 __u8 shadowMCR
; /* last MCR value received */
97 __u8 shadowMSR
; /* last MSR value received */
98 __u8 shadowLSR
; /* last LSR value received */
99 __u8 shadowXonChar
; /* last value set as XON char in Edgeport */
100 __u8 shadowXoffChar
; /* last value set as XOFF char in Edgeport */
108 bool chaseResponsePending
;
110 wait_queue_head_t wait_chase
; /* for handling sleeping while waiting for chase to finish */
111 wait_queue_head_t wait_open
; /* for handling sleeping while waiting for open to finish */
112 wait_queue_head_t wait_command
; /* for handling sleeping while waiting for command to finish */
113 wait_queue_head_t delta_msr_wait
; /* for handling sleeping while waiting for msr change to happen */
115 struct async_icount icount
;
116 struct usb_serial_port
*port
; /* loop back to the owner of this object */
120 /* This structure holds all of the individual device information */
121 struct edgeport_serial
{
122 char name
[MAX_NAME_LEN
+2]; /* string name of this device */
124 struct edge_manuf_descriptor manuf_descriptor
; /* the manufacturer descriptor */
125 struct edge_boot_descriptor boot_descriptor
; /* the boot firmware descriptor */
126 struct edgeport_product_info product_info
; /* Product Info */
127 struct edge_compatibility_descriptor epic_descriptor
; /* Edgeport compatible descriptor */
128 int is_epic
; /* flag if EPiC device or not */
130 __u8 interrupt_in_endpoint
; /* the interrupt endpoint handle */
131 unsigned char *interrupt_in_buffer
; /* the buffer we use for the interrupt endpoint */
132 struct urb
*interrupt_read_urb
; /* our interrupt urb */
134 __u8 bulk_in_endpoint
; /* the bulk in endpoint handle */
135 unsigned char *bulk_in_buffer
; /* the buffer we use for the bulk in endpoint */
136 struct urb
*read_urb
; /* our bulk read urb */
137 bool read_in_progress
;
140 __u8 bulk_out_endpoint
; /* the bulk out endpoint handle */
142 __s16 rxBytesAvail
; /* the number of bytes that we need to read from this device */
144 enum RXSTATE rxState
; /* the current state of the bulk receive processor */
145 __u8 rxHeader1
; /* receive header byte 1 */
146 __u8 rxHeader2
; /* receive header byte 2 */
147 __u8 rxHeader3
; /* receive header byte 3 */
148 __u8 rxPort
; /* the port that we are currently receiving data for */
149 __u8 rxStatusCode
; /* the receive status code */
150 __u8 rxStatusParam
; /* the receive status paramater */
151 __s16 rxBytesRemaining
; /* the number of port bytes left to read */
152 struct usb_serial
*serial
; /* loop back to the owner of this object */
155 /* baud rate information */
156 struct divisor_table_entry
{
162 * Define table of divisors for Rev A EdgePort/4 hardware
163 * These assume a 3.6864MHz crystal, the standard /16, and
167 static const struct divisor_table_entry divisor_table
[] = {
170 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
171 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
189 /* Number of outstanding Command Write Urbs */
190 static atomic_t CmdUrbs
= ATOMIC_INIT(0);
193 /* local function prototypes */
195 /* function prototypes for all URB callbacks */
196 static void edge_interrupt_callback(struct urb
*urb
);
197 static void edge_bulk_in_callback(struct urb
*urb
);
198 static void edge_bulk_out_data_callback(struct urb
*urb
);
199 static void edge_bulk_out_cmd_callback(struct urb
*urb
);
201 /* function prototypes for the usbserial callbacks */
202 static int edge_open(struct tty_struct
*tty
, struct usb_serial_port
*port
);
203 static void edge_close(struct usb_serial_port
*port
);
204 static int edge_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
205 const unsigned char *buf
, int count
);
206 static int edge_write_room(struct tty_struct
*tty
);
207 static int edge_chars_in_buffer(struct tty_struct
*tty
);
208 static void edge_throttle(struct tty_struct
*tty
);
209 static void edge_unthrottle(struct tty_struct
*tty
);
210 static void edge_set_termios(struct tty_struct
*tty
,
211 struct usb_serial_port
*port
,
212 struct ktermios
*old_termios
);
213 static int edge_ioctl(struct tty_struct
*tty
,
214 unsigned int cmd
, unsigned long arg
);
215 static void edge_break(struct tty_struct
*tty
, int break_state
);
216 static int edge_tiocmget(struct tty_struct
*tty
);
217 static int edge_tiocmset(struct tty_struct
*tty
,
218 unsigned int set
, unsigned int clear
);
219 static int edge_get_icount(struct tty_struct
*tty
,
220 struct serial_icounter_struct
*icount
);
221 static int edge_startup(struct usb_serial
*serial
);
222 static void edge_disconnect(struct usb_serial
*serial
);
223 static void edge_release(struct usb_serial
*serial
);
224 static int edge_port_probe(struct usb_serial_port
*port
);
225 static int edge_port_remove(struct usb_serial_port
*port
);
227 #include "io_tables.h" /* all of the devices that this driver supports */
229 /* function prototypes for all of our local functions */
231 static void process_rcvd_data(struct edgeport_serial
*edge_serial
,
232 unsigned char *buffer
, __u16 bufferLength
);
233 static void process_rcvd_status(struct edgeport_serial
*edge_serial
,
234 __u8 byte2
, __u8 byte3
);
235 static void edge_tty_recv(struct device
*dev
, struct tty_struct
*tty
,
236 unsigned char *data
, int length
);
237 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
);
238 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
,
239 __u8 lsr
, __u8 data
);
240 static int send_iosp_ext_cmd(struct edgeport_port
*edge_port
, __u8 command
,
242 static int calc_baud_rate_divisor(struct device
*dev
, int baud_rate
, int *divisor
);
243 static int send_cmd_write_baud_rate(struct edgeport_port
*edge_port
,
245 static void change_port_settings(struct tty_struct
*tty
,
246 struct edgeport_port
*edge_port
,
247 struct ktermios
*old_termios
);
248 static int send_cmd_write_uart_register(struct edgeport_port
*edge_port
,
249 __u8 regNum
, __u8 regValue
);
250 static int write_cmd_usb(struct edgeport_port
*edge_port
,
251 unsigned char *buffer
, int writeLength
);
252 static void send_more_port_data(struct edgeport_serial
*edge_serial
,
253 struct edgeport_port
*edge_port
);
255 static int sram_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
256 __u16 length
, const __u8
*data
);
257 static int rom_read(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
258 __u16 length
, __u8
*data
);
259 static int rom_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
260 __u16 length
, const __u8
*data
);
261 static void get_manufacturing_desc(struct edgeport_serial
*edge_serial
);
262 static void get_boot_desc(struct edgeport_serial
*edge_serial
);
263 static void load_application_firmware(struct edgeport_serial
*edge_serial
);
265 static void unicode_to_ascii(char *string
, int buflen
,
266 __le16
*unicode
, int unicode_size
);
269 /* ************************************************************************ */
270 /* ************************************************************************ */
271 /* ************************************************************************ */
272 /* ************************************************************************ */
274 /************************************************************************
276 * update_edgeport_E2PROM() Compare current versions of *
277 * Boot ROM and Manufacture *
278 * Descriptors with versions *
279 * embedded in this driver *
281 ************************************************************************/
282 static void update_edgeport_E2PROM(struct edgeport_serial
*edge_serial
)
284 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
287 __u8 BootMajorVersion
;
288 __u8 BootMinorVersion
;
289 __u16 BootBuildNumber
;
291 const struct ihex_binrec
*rec
;
292 const struct firmware
*fw
;
296 switch (edge_serial
->product_info
.iDownloadFile
) {
297 case EDGE_DOWNLOAD_FILE_I930
:
298 fw_name
= "edgeport/boot.fw";
300 case EDGE_DOWNLOAD_FILE_80251
:
301 fw_name
= "edgeport/boot2.fw";
307 response
= request_ihex_firmware(&fw
, fw_name
,
308 &edge_serial
->serial
->dev
->dev
);
310 dev_err(dev
, "Failed to load image \"%s\" err %d\n",
315 rec
= (const struct ihex_binrec
*)fw
->data
;
316 BootMajorVersion
= rec
->data
[0];
317 BootMinorVersion
= rec
->data
[1];
318 BootBuildNumber
= (rec
->data
[2] << 8) | rec
->data
[3];
320 /* Check Boot Image Version */
321 BootCurVer
= (edge_serial
->boot_descriptor
.MajorVersion
<< 24) +
322 (edge_serial
->boot_descriptor
.MinorVersion
<< 16) +
323 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
);
325 BootNewVer
= (BootMajorVersion
<< 24) +
326 (BootMinorVersion
<< 16) +
329 dev_dbg(dev
, "Current Boot Image version %d.%d.%d\n",
330 edge_serial
->boot_descriptor
.MajorVersion
,
331 edge_serial
->boot_descriptor
.MinorVersion
,
332 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
335 if (BootNewVer
> BootCurVer
) {
336 dev_dbg(dev
, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
337 edge_serial
->boot_descriptor
.MajorVersion
,
338 edge_serial
->boot_descriptor
.MinorVersion
,
339 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
),
340 BootMajorVersion
, BootMinorVersion
, BootBuildNumber
);
342 dev_dbg(dev
, "Downloading new Boot Image\n");
344 for (rec
= ihex_next_binrec(rec
); rec
;
345 rec
= ihex_next_binrec(rec
)) {
346 Bootaddr
= be32_to_cpu(rec
->addr
);
347 response
= rom_write(edge_serial
->serial
,
350 be16_to_cpu(rec
->len
),
353 dev_err(&edge_serial
->serial
->dev
->dev
,
354 "rom_write failed (%x, %x, %d)\n",
355 Bootaddr
>> 16, Bootaddr
& 0xFFFF,
356 be16_to_cpu(rec
->len
));
361 dev_dbg(dev
, "Boot Image -- already up to date\n");
363 release_firmware(fw
);
367 /************************************************************************
369 * Get string descriptor from device
371 ************************************************************************/
372 static int get_string_desc(struct usb_device
*dev
, int Id
,
373 struct usb_string_descriptor
**pRetDesc
)
375 struct usb_string_descriptor StringDesc
;
376 struct usb_string_descriptor
*pStringDesc
;
378 dev_dbg(&dev
->dev
, "%s - USB String ID = %d\n", __func__
, Id
);
380 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
,
384 pStringDesc
= kmalloc(StringDesc
.bLength
, GFP_KERNEL
);
388 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
,
389 StringDesc
.bLength
)) {
394 *pRetDesc
= pStringDesc
;
399 static void dump_product_info(struct edgeport_serial
*edge_serial
,
400 struct edgeport_product_info
*product_info
)
402 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
404 /* Dump Product Info structure */
405 dev_dbg(dev
, "**Product Information:\n");
406 dev_dbg(dev
, " ProductId %x\n", product_info
->ProductId
);
407 dev_dbg(dev
, " NumPorts %d\n", product_info
->NumPorts
);
408 dev_dbg(dev
, " ProdInfoVer %d\n", product_info
->ProdInfoVer
);
409 dev_dbg(dev
, " IsServer %d\n", product_info
->IsServer
);
410 dev_dbg(dev
, " IsRS232 %d\n", product_info
->IsRS232
);
411 dev_dbg(dev
, " IsRS422 %d\n", product_info
->IsRS422
);
412 dev_dbg(dev
, " IsRS485 %d\n", product_info
->IsRS485
);
413 dev_dbg(dev
, " RomSize %d\n", product_info
->RomSize
);
414 dev_dbg(dev
, " RamSize %d\n", product_info
->RamSize
);
415 dev_dbg(dev
, " CpuRev %x\n", product_info
->CpuRev
);
416 dev_dbg(dev
, " BoardRev %x\n", product_info
->BoardRev
);
417 dev_dbg(dev
, " BootMajorVersion %d.%d.%d\n",
418 product_info
->BootMajorVersion
,
419 product_info
->BootMinorVersion
,
420 le16_to_cpu(product_info
->BootBuildNumber
));
421 dev_dbg(dev
, " FirmwareMajorVersion %d.%d.%d\n",
422 product_info
->FirmwareMajorVersion
,
423 product_info
->FirmwareMinorVersion
,
424 le16_to_cpu(product_info
->FirmwareBuildNumber
));
425 dev_dbg(dev
, " ManufactureDescDate %d/%d/%d\n",
426 product_info
->ManufactureDescDate
[0],
427 product_info
->ManufactureDescDate
[1],
428 product_info
->ManufactureDescDate
[2]+1900);
429 dev_dbg(dev
, " iDownloadFile 0x%x\n",
430 product_info
->iDownloadFile
);
431 dev_dbg(dev
, " EpicVer %d\n", product_info
->EpicVer
);
434 static void get_product_info(struct edgeport_serial
*edge_serial
)
436 struct edgeport_product_info
*product_info
= &edge_serial
->product_info
;
438 memset(product_info
, 0, sizeof(struct edgeport_product_info
));
440 product_info
->ProductId
= (__u16
)(le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ~ION_DEVICE_ID_80251_NETCHIP
);
441 product_info
->NumPorts
= edge_serial
->manuf_descriptor
.NumPorts
;
442 product_info
->ProdInfoVer
= 0;
444 product_info
->RomSize
= edge_serial
->manuf_descriptor
.RomSize
;
445 product_info
->RamSize
= edge_serial
->manuf_descriptor
.RamSize
;
446 product_info
->CpuRev
= edge_serial
->manuf_descriptor
.CpuRev
;
447 product_info
->BoardRev
= edge_serial
->manuf_descriptor
.BoardRev
;
449 product_info
->BootMajorVersion
=
450 edge_serial
->boot_descriptor
.MajorVersion
;
451 product_info
->BootMinorVersion
=
452 edge_serial
->boot_descriptor
.MinorVersion
;
453 product_info
->BootBuildNumber
=
454 edge_serial
->boot_descriptor
.BuildNumber
;
456 memcpy(product_info
->ManufactureDescDate
,
457 edge_serial
->manuf_descriptor
.DescDate
,
458 sizeof(edge_serial
->manuf_descriptor
.DescDate
));
460 /* check if this is 2nd generation hardware */
461 if (le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
)
462 & ION_DEVICE_ID_80251_NETCHIP
)
463 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_80251
;
465 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_I930
;
467 /* Determine Product type and set appropriate flags */
468 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info
->ProductId
)) {
469 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE
:
470 case ION_DEVICE_ID_EDGEPORT_4T
:
471 case ION_DEVICE_ID_EDGEPORT_4
:
472 case ION_DEVICE_ID_EDGEPORT_2
:
473 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU
:
474 case ION_DEVICE_ID_EDGEPORT_8
:
475 case ION_DEVICE_ID_EDGEPORT_421
:
476 case ION_DEVICE_ID_EDGEPORT_21
:
477 case ION_DEVICE_ID_EDGEPORT_2_DIN
:
478 case ION_DEVICE_ID_EDGEPORT_4_DIN
:
479 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU
:
480 product_info
->IsRS232
= 1;
483 case ION_DEVICE_ID_EDGEPORT_2I
: /* Edgeport/2 RS422/RS485 */
484 product_info
->IsRS422
= 1;
485 product_info
->IsRS485
= 1;
488 case ION_DEVICE_ID_EDGEPORT_8I
: /* Edgeport/4 RS422 */
489 case ION_DEVICE_ID_EDGEPORT_4I
: /* Edgeport/4 RS422 */
490 product_info
->IsRS422
= 1;
494 dump_product_info(edge_serial
, product_info
);
497 static int get_epic_descriptor(struct edgeport_serial
*ep
)
500 struct usb_serial
*serial
= ep
->serial
;
501 struct edgeport_product_info
*product_info
= &ep
->product_info
;
502 struct edge_compatibility_descriptor
*epic
= &ep
->epic_descriptor
;
503 struct edge_compatibility_bits
*bits
;
504 struct device
*dev
= &serial
->dev
->dev
;
507 result
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
508 USB_REQUEST_ION_GET_EPIC_DESC
,
510 &ep
->epic_descriptor
,
511 sizeof(struct edge_compatibility_descriptor
),
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(ep
, product_info
);
529 bits
= &ep
->epic_descriptor
.Supports
;
530 dev_dbg(dev
, "**EPIC descriptor:\n");
531 dev_dbg(dev
, " VendEnableSuspend: %s\n", bits
->VendEnableSuspend
? "TRUE": "FALSE");
532 dev_dbg(dev
, " IOSPOpen : %s\n", bits
->IOSPOpen
? "TRUE": "FALSE");
533 dev_dbg(dev
, " IOSPClose : %s\n", bits
->IOSPClose
? "TRUE": "FALSE");
534 dev_dbg(dev
, " IOSPChase : %s\n", bits
->IOSPChase
? "TRUE": "FALSE");
535 dev_dbg(dev
, " IOSPSetRxFlow : %s\n", bits
->IOSPSetRxFlow
? "TRUE": "FALSE");
536 dev_dbg(dev
, " IOSPSetTxFlow : %s\n", bits
->IOSPSetTxFlow
? "TRUE": "FALSE");
537 dev_dbg(dev
, " IOSPSetXChar : %s\n", bits
->IOSPSetXChar
? "TRUE": "FALSE");
538 dev_dbg(dev
, " IOSPRxCheck : %s\n", bits
->IOSPRxCheck
? "TRUE": "FALSE");
539 dev_dbg(dev
, " IOSPSetClrBreak : %s\n", bits
->IOSPSetClrBreak
? "TRUE": "FALSE");
540 dev_dbg(dev
, " IOSPWriteMCR : %s\n", bits
->IOSPWriteMCR
? "TRUE": "FALSE");
541 dev_dbg(dev
, " IOSPWriteLCR : %s\n", bits
->IOSPWriteLCR
? "TRUE": "FALSE");
542 dev_dbg(dev
, " IOSPSetBaudRate : %s\n", bits
->IOSPSetBaudRate
? "TRUE": "FALSE");
543 dev_dbg(dev
, " TrueEdgeport : %s\n", 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
;
566 struct edgeport_port
*edge_port
;
567 struct usb_serial_port
*port
;
568 struct tty_struct
*tty
;
569 unsigned char *data
= urb
->transfer_buffer
;
570 int length
= urb
->actual_length
;
576 int status
= urb
->status
;
585 /* this urb is terminated, clean up */
586 dev_dbg(&urb
->dev
->dev
, "%s - urb shutting down with status: %d\n", __func__
, status
);
589 dev_dbg(&urb
->dev
->dev
, "%s - nonzero urb status received: %d\n", __func__
, status
);
593 dev
= &edge_serial
->serial
->dev
->dev
;
595 /* process this interrupt-read even if there are no ports open */
597 usb_serial_debug_data(dev
, __func__
, length
, data
);
600 bytes_avail
= data
[0] | (data
[1] << 8);
602 spin_lock(&edge_serial
->es_lock
);
603 edge_serial
->rxBytesAvail
+= bytes_avail
;
605 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
606 __func__
, bytes_avail
,
607 edge_serial
->rxBytesAvail
,
608 edge_serial
->read_in_progress
);
610 if (edge_serial
->rxBytesAvail
> 0 &&
611 !edge_serial
->read_in_progress
) {
612 dev_dbg(dev
, "%s - posting a read\n", __func__
);
613 edge_serial
->read_in_progress
= true;
615 /* we have pending bytes on the
616 bulk in pipe, send a request */
617 result
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
620 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
622 edge_serial
->read_in_progress
= false;
625 spin_unlock(&edge_serial
->es_lock
);
628 /* grab the txcredits for the ports if available */
631 while ((position
< length
) &&
632 (portNumber
< edge_serial
->serial
->num_ports
)) {
633 txCredits
= data
[position
] | (data
[position
+1] << 8);
635 port
= edge_serial
->serial
->port
[portNumber
];
636 edge_port
= usb_get_serial_port_data(port
);
637 if (edge_port
->open
) {
638 spin_lock(&edge_port
->ep_lock
);
639 edge_port
->txCredits
+= txCredits
;
640 spin_unlock(&edge_port
->ep_lock
);
641 dev_dbg(dev
, "%s - txcredits for port%d = %d\n",
642 __func__
, portNumber
,
643 edge_port
->txCredits
);
645 /* tell the tty driver that something
647 tty
= tty_port_tty_get(
648 &edge_port
->port
->port
);
653 /* Since we have more credit, check
654 if more data can be sent */
655 send_more_port_data(edge_serial
,
665 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
667 dev_err(&urb
->dev
->dev
,
668 "%s - Error %d submitting control urb\n",
673 /*****************************************************************************
674 * edge_bulk_in_callback
675 * this is the callback function for when we have received data on the
677 *****************************************************************************/
678 static void edge_bulk_in_callback(struct urb
*urb
)
680 struct edgeport_serial
*edge_serial
= urb
->context
;
682 unsigned char *data
= urb
->transfer_buffer
;
684 __u16 raw_data_length
;
685 int status
= urb
->status
;
688 dev_dbg(&urb
->dev
->dev
, "%s - nonzero read bulk status received: %d\n",
690 edge_serial
->read_in_progress
= false;
694 if (urb
->actual_length
== 0) {
695 dev_dbg(&urb
->dev
->dev
, "%s - read bulk callback with no data\n", __func__
);
696 edge_serial
->read_in_progress
= false;
700 dev
= &edge_serial
->serial
->dev
->dev
;
701 raw_data_length
= urb
->actual_length
;
703 usb_serial_debug_data(dev
, __func__
, raw_data_length
, data
);
705 spin_lock(&edge_serial
->es_lock
);
707 /* decrement our rxBytes available by the number that we just got */
708 edge_serial
->rxBytesAvail
-= raw_data_length
;
710 dev_dbg(dev
, "%s - Received = %d, rxBytesAvail %d\n", __func__
,
711 raw_data_length
, edge_serial
->rxBytesAvail
);
713 process_rcvd_data(edge_serial
, data
, urb
->actual_length
);
715 /* check to see if there's any more data for us to read */
716 if (edge_serial
->rxBytesAvail
> 0) {
717 dev_dbg(dev
, "%s - posting a read\n", __func__
);
718 retval
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
721 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
723 edge_serial
->read_in_progress
= false;
726 edge_serial
->read_in_progress
= false;
729 spin_unlock(&edge_serial
->es_lock
);
733 /*****************************************************************************
734 * edge_bulk_out_data_callback
735 * this is the callback function for when we have finished sending
736 * serial data on the bulk out endpoint.
737 *****************************************************************************/
738 static void edge_bulk_out_data_callback(struct urb
*urb
)
740 struct edgeport_port
*edge_port
= urb
->context
;
741 struct tty_struct
*tty
;
742 int status
= urb
->status
;
745 dev_dbg(&urb
->dev
->dev
,
746 "%s - nonzero write bulk status received: %d\n",
750 tty
= tty_port_tty_get(&edge_port
->port
->port
);
752 if (tty
&& edge_port
->open
) {
753 /* let the tty driver wakeup if it has a special
754 write_wakeup function */
759 /* Release the Write URB */
760 edge_port
->write_in_progress
= false;
762 /* Check if more data needs to be sent */
763 send_more_port_data((struct edgeport_serial
*)
764 (usb_get_serial_data(edge_port
->port
->serial
)), edge_port
);
768 /*****************************************************************************
770 * this is the callback function for when we have finished sending a
771 * command on the bulk out endpoint.
772 *****************************************************************************/
773 static void edge_bulk_out_cmd_callback(struct urb
*urb
)
775 struct edgeport_port
*edge_port
= urb
->context
;
776 struct tty_struct
*tty
;
777 int status
= urb
->status
;
779 atomic_dec(&CmdUrbs
);
780 dev_dbg(&urb
->dev
->dev
, "%s - FREE URB %p (outstanding %d)\n",
781 __func__
, urb
, atomic_read(&CmdUrbs
));
784 /* clean up the transfer buffer */
785 kfree(urb
->transfer_buffer
);
787 /* Free the command urb */
791 dev_dbg(&urb
->dev
->dev
,
792 "%s - nonzero write bulk status received: %d\n",
797 /* Get pointer to tty */
798 tty
= tty_port_tty_get(&edge_port
->port
->port
);
800 /* tell the tty driver that something has changed */
801 if (tty
&& edge_port
->open
)
805 /* we have completed the command */
806 edge_port
->commandPending
= false;
807 wake_up(&edge_port
->wait_command
);
811 /*****************************************************************************
812 * Driver tty interface functions
813 *****************************************************************************/
815 /*****************************************************************************
817 * this function is called by the tty driver when a port is opened
818 * If successful, we return 0
819 * Otherwise we return a negative error number.
820 *****************************************************************************/
821 static int edge_open(struct tty_struct
*tty
, struct usb_serial_port
*port
)
823 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
824 struct device
*dev
= &port
->dev
;
825 struct usb_serial
*serial
;
826 struct edgeport_serial
*edge_serial
;
829 if (edge_port
== NULL
)
832 /* see if we've set up our endpoint info yet (can't set it up
833 in edge_startup as the structures were not set up at that time.) */
834 serial
= port
->serial
;
835 edge_serial
= usb_get_serial_data(serial
);
836 if (edge_serial
== NULL
)
838 if (edge_serial
->interrupt_in_buffer
== NULL
) {
839 struct usb_serial_port
*port0
= serial
->port
[0];
841 /* not set up yet, so do it now */
842 edge_serial
->interrupt_in_buffer
=
843 port0
->interrupt_in_buffer
;
844 edge_serial
->interrupt_in_endpoint
=
845 port0
->interrupt_in_endpointAddress
;
846 edge_serial
->interrupt_read_urb
= port0
->interrupt_in_urb
;
847 edge_serial
->bulk_in_buffer
= port0
->bulk_in_buffer
;
848 edge_serial
->bulk_in_endpoint
=
849 port0
->bulk_in_endpointAddress
;
850 edge_serial
->read_urb
= port0
->read_urb
;
851 edge_serial
->bulk_out_endpoint
=
852 port0
->bulk_out_endpointAddress
;
854 /* set up our interrupt urb */
855 usb_fill_int_urb(edge_serial
->interrupt_read_urb
,
857 usb_rcvintpipe(serial
->dev
,
858 port0
->interrupt_in_endpointAddress
),
859 port0
->interrupt_in_buffer
,
860 edge_serial
->interrupt_read_urb
->transfer_buffer_length
,
861 edge_interrupt_callback
, edge_serial
,
862 edge_serial
->interrupt_read_urb
->interval
);
864 /* set up our bulk in urb */
865 usb_fill_bulk_urb(edge_serial
->read_urb
, serial
->dev
,
866 usb_rcvbulkpipe(serial
->dev
,
867 port0
->bulk_in_endpointAddress
),
868 port0
->bulk_in_buffer
,
869 edge_serial
->read_urb
->transfer_buffer_length
,
870 edge_bulk_in_callback
, edge_serial
);
871 edge_serial
->read_in_progress
= false;
873 /* start interrupt read for this edgeport
874 * this interrupt will continue as long
875 * as the edgeport is connected */
876 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
,
879 dev_err(dev
, "%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(dev
, "%s - error sending open port command\n", __func__
);
906 edge_port
->openPending
= false;
910 /* now wait for the port to be completely opened */
911 wait_event_timeout(edge_port
->wait_open
, !edge_port
->openPending
,
914 if (!edge_port
->open
) {
916 dev_dbg(dev
, "%s - open timedout\n", __func__
);
917 edge_port
->openPending
= false;
921 /* create the txfifo */
922 edge_port
->txfifo
.head
= 0;
923 edge_port
->txfifo
.tail
= 0;
924 edge_port
->txfifo
.count
= 0;
925 edge_port
->txfifo
.size
= edge_port
->maxTxCredits
;
926 edge_port
->txfifo
.fifo
= kmalloc(edge_port
->maxTxCredits
, GFP_KERNEL
);
928 if (!edge_port
->txfifo
.fifo
) {
929 dev_dbg(dev
, "%s - no memory\n", __func__
);
934 /* Allocate a URB for the write */
935 edge_port
->write_urb
= usb_alloc_urb(0, GFP_KERNEL
);
936 edge_port
->write_in_progress
= false;
938 if (!edge_port
->write_urb
) {
939 dev_dbg(dev
, "%s - no memory\n", __func__
);
944 dev_dbg(dev
, "%s(%d) - Initialize TX fifo to %d bytes\n",
945 __func__
, port
->number
, edge_port
->maxTxCredits
);
951 /************************************************************************
953 * block_until_chase_response
955 * This function will block the close until one of the following:
956 * 1. Response to our Chase comes from Edgeport
957 * 2. A timeout of 10 seconds without activity has expired
958 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
960 ************************************************************************/
961 static void block_until_chase_response(struct edgeport_port
*edge_port
)
963 struct device
*dev
= &edge_port
->port
->dev
;
970 /* Save Last credits */
971 lastCredits
= edge_port
->txCredits
;
973 /* Did we get our Chase response */
974 if (!edge_port
->chaseResponsePending
) {
975 dev_dbg(dev
, "%s - Got Chase Response\n", __func__
);
977 /* did we get all of our credit back? */
978 if (edge_port
->txCredits
== edge_port
->maxTxCredits
) {
979 dev_dbg(dev
, "%s - Got all credits\n", __func__
);
984 /* Block the thread for a while */
985 prepare_to_wait(&edge_port
->wait_chase
, &wait
,
986 TASK_UNINTERRUPTIBLE
);
987 schedule_timeout(timeout
);
988 finish_wait(&edge_port
->wait_chase
, &wait
);
990 if (lastCredits
== edge_port
->txCredits
) {
991 /* No activity.. count down. */
994 edge_port
->chaseResponsePending
= false;
995 dev_dbg(dev
, "%s - Chase TIMEOUT\n", __func__
);
999 /* Reset timeout value back to 10 seconds */
1000 dev_dbg(dev
, "%s - Last %d, Current %d\n", __func__
,
1001 lastCredits
, edge_port
->txCredits
);
1008 /************************************************************************
1010 * block_until_tx_empty
1012 * This function will block the close until one of the following:
1014 * 2. The edgeport has stopped
1015 * 3. A timeout of 3 seconds without activity has expired
1017 ************************************************************************/
1018 static void block_until_tx_empty(struct edgeport_port
*edge_port
)
1020 struct device
*dev
= &edge_port
->port
->dev
;
1022 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1024 int timeout
= HZ
/10;
1028 /* Save Last count */
1029 lastCount
= fifo
->count
;
1031 /* Is the Edgeport Buffer empty? */
1032 if (lastCount
== 0) {
1033 dev_dbg(dev
, "%s - TX Buffer Empty\n", __func__
);
1037 /* Block the thread for a while */
1038 prepare_to_wait(&edge_port
->wait_chase
, &wait
,
1039 TASK_UNINTERRUPTIBLE
);
1040 schedule_timeout(timeout
);
1041 finish_wait(&edge_port
->wait_chase
, &wait
);
1043 dev_dbg(dev
, "%s wait\n", __func__
);
1045 if (lastCount
== fifo
->count
) {
1046 /* No activity.. count down. */
1049 dev_dbg(dev
, "%s - TIMEOUT\n", __func__
);
1053 /* Reset timeout value back to seconds */
1060 /*****************************************************************************
1062 * this function is called by the tty driver when a port is closed
1063 *****************************************************************************/
1064 static void edge_close(struct usb_serial_port
*port
)
1066 struct edgeport_serial
*edge_serial
;
1067 struct edgeport_port
*edge_port
;
1070 edge_serial
= usb_get_serial_data(port
->serial
);
1071 edge_port
= usb_get_serial_port_data(port
);
1072 if (edge_serial
== NULL
|| edge_port
== NULL
)
1075 /* block until tx is empty */
1076 block_until_tx_empty(edge_port
);
1078 edge_port
->closePending
= true;
1080 if ((!edge_serial
->is_epic
) ||
1081 ((edge_serial
->is_epic
) &&
1082 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1083 /* flush and chase */
1084 edge_port
->chaseResponsePending
= true;
1086 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__
);
1087 status
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1089 /* block until chase finished */
1090 block_until_chase_response(edge_port
);
1092 edge_port
->chaseResponsePending
= false;
1095 if ((!edge_serial
->is_epic
) ||
1096 ((edge_serial
->is_epic
) &&
1097 (edge_serial
->epic_descriptor
.Supports
.IOSPClose
))) {
1098 /* close the port */
1099 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__
);
1100 send_iosp_ext_cmd(edge_port
, IOSP_CMD_CLOSE_PORT
, 0);
1103 /* port->close = true; */
1104 edge_port
->closePending
= false;
1105 edge_port
->open
= false;
1106 edge_port
->openPending
= false;
1108 usb_kill_urb(edge_port
->write_urb
);
1110 if (edge_port
->write_urb
) {
1111 /* if this urb had a transfer buffer already
1112 (old transfer) free it */
1113 kfree(edge_port
->write_urb
->transfer_buffer
);
1114 usb_free_urb(edge_port
->write_urb
);
1115 edge_port
->write_urb
= NULL
;
1117 kfree(edge_port
->txfifo
.fifo
);
1118 edge_port
->txfifo
.fifo
= NULL
;
1121 /*****************************************************************************
1123 * this function is called by the tty driver when data should be written
1125 * If successful, we return the number of bytes written, otherwise we
1126 * return a negative error number.
1127 *****************************************************************************/
1128 static int edge_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
1129 const unsigned char *data
, int count
)
1131 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1132 struct TxFifo
*fifo
;
1137 unsigned long flags
;
1139 if (edge_port
== NULL
)
1142 /* get a pointer to the Tx fifo */
1143 fifo
= &edge_port
->txfifo
;
1145 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1147 /* calculate number of bytes to put in fifo */
1148 copySize
= min((unsigned int)count
,
1149 (edge_port
->txCredits
- fifo
->count
));
1151 dev_dbg(&port
->dev
, "%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1152 __func__
, port
->number
, count
,
1153 edge_port
->txCredits
- fifo
->count
, copySize
);
1155 /* catch writes of 0 bytes which the tty driver likes to give us,
1156 and when txCredits is empty */
1157 if (copySize
== 0) {
1158 dev_dbg(&port
->dev
, "%s - copySize = Zero\n", __func__
);
1163 * since we can never overflow the buffer we do not have to check for a
1166 * the copy is done is two parts -- first fill to the end of the buffer
1167 * then copy the reset from the start of the buffer
1169 bytesleft
= fifo
->size
- fifo
->head
;
1170 firsthalf
= min(bytesleft
, copySize
);
1171 dev_dbg(&port
->dev
, "%s - copy %d bytes of %d into fifo \n", __func__
,
1172 firsthalf
, bytesleft
);
1174 /* now copy our data */
1175 memcpy(&fifo
->fifo
[fifo
->head
], data
, firsthalf
);
1176 usb_serial_debug_data(&port
->dev
, __func__
, firsthalf
, &fifo
->fifo
[fifo
->head
]);
1178 /* update the index and size */
1179 fifo
->head
+= firsthalf
;
1180 fifo
->count
+= firsthalf
;
1182 /* wrap the index */
1183 if (fifo
->head
== fifo
->size
)
1186 secondhalf
= copySize
-firsthalf
;
1189 dev_dbg(&port
->dev
, "%s - copy rest of data %d\n", __func__
, secondhalf
);
1190 memcpy(&fifo
->fifo
[fifo
->head
], &data
[firsthalf
], secondhalf
);
1191 usb_serial_debug_data(&port
->dev
, __func__
, secondhalf
, &fifo
->fifo
[fifo
->head
]);
1192 /* update the index and size */
1193 fifo
->count
+= secondhalf
;
1194 fifo
->head
+= secondhalf
;
1195 /* No need to check for wrap since we can not get to end of
1196 * the fifo in this part
1201 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1203 send_more_port_data((struct edgeport_serial
*)
1204 usb_get_serial_data(port
->serial
), edge_port
);
1206 dev_dbg(&port
->dev
, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1207 __func__
, copySize
, edge_port
->txCredits
, fifo
->count
);
1213 /************************************************************************
1215 * send_more_port_data()
1217 * This routine attempts to write additional UART transmit data
1218 * to a port over the USB bulk pipe. It is called (1) when new
1219 * data has been written to a port's TxBuffer from higher layers
1220 * (2) when the peripheral sends us additional TxCredits indicating
1221 * that it can accept more Tx data for a given port; and (3) when
1222 * a bulk write completes successfully and we want to see if we
1223 * can transmit more.
1225 ************************************************************************/
1226 static void send_more_port_data(struct edgeport_serial
*edge_serial
,
1227 struct edgeport_port
*edge_port
)
1229 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1230 struct device
*dev
= &edge_port
->port
->dev
;
1232 unsigned char *buffer
;
1238 unsigned long flags
;
1240 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1242 if (edge_port
->write_in_progress
||
1244 (fifo
->count
== 0)) {
1245 dev_dbg(dev
, "%s(%d) EXIT - fifo %d, PendingWrite = %d\n",
1246 __func__
, edge_port
->port
->number
,
1247 fifo
->count
, edge_port
->write_in_progress
);
1251 /* since the amount of data in the fifo will always fit into the
1252 * edgeport buffer we do not need to check the write length
1254 * Do we have enough credits for this port to make it worthwhile
1255 * to bother queueing a write. If it's too small, say a few bytes,
1256 * it's better to wait for more credits so we can do a larger write.
1258 if (edge_port
->txCredits
< EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port
->maxTxCredits
, EDGE_FW_BULK_MAX_PACKET_SIZE
)) {
1259 dev_dbg(dev
, "%s(%d) Not enough credit - fifo %d TxCredit %d\n",
1260 __func__
, edge_port
->port
->number
, fifo
->count
,
1261 edge_port
->txCredits
);
1265 /* lock this write */
1266 edge_port
->write_in_progress
= true;
1268 /* get a pointer to the write_urb */
1269 urb
= edge_port
->write_urb
;
1271 /* make sure transfer buffer is freed */
1272 kfree(urb
->transfer_buffer
);
1273 urb
->transfer_buffer
= NULL
;
1275 /* build the data header for the buffer and port that we are about
1277 count
= fifo
->count
;
1278 buffer
= kmalloc(count
+2, GFP_ATOMIC
);
1279 if (buffer
== NULL
) {
1280 dev_err_console(edge_port
->port
,
1281 "%s - no more kernel memory...\n", __func__
);
1282 edge_port
->write_in_progress
= false;
1285 buffer
[0] = IOSP_BUILD_DATA_HDR1(edge_port
->port
->number
1286 - edge_port
->port
->serial
->minor
, count
);
1287 buffer
[1] = IOSP_BUILD_DATA_HDR2(edge_port
->port
->number
1288 - edge_port
->port
->serial
->minor
, count
);
1290 /* now copy our data */
1291 bytesleft
= fifo
->size
- fifo
->tail
;
1292 firsthalf
= min(bytesleft
, count
);
1293 memcpy(&buffer
[2], &fifo
->fifo
[fifo
->tail
], firsthalf
);
1294 fifo
->tail
+= firsthalf
;
1295 fifo
->count
-= firsthalf
;
1296 if (fifo
->tail
== fifo
->size
)
1299 secondhalf
= count
-firsthalf
;
1301 memcpy(&buffer
[2+firsthalf
], &fifo
->fifo
[fifo
->tail
],
1303 fifo
->tail
+= secondhalf
;
1304 fifo
->count
-= secondhalf
;
1308 usb_serial_debug_data(&edge_port
->port
->dev
, __func__
, count
, &buffer
[2]);
1310 /* fill up the urb with all of our data and submit it */
1311 usb_fill_bulk_urb(urb
, edge_serial
->serial
->dev
,
1312 usb_sndbulkpipe(edge_serial
->serial
->dev
,
1313 edge_serial
->bulk_out_endpoint
),
1315 edge_bulk_out_data_callback
, edge_port
);
1317 /* decrement the number of credits we have by the number we just sent */
1318 edge_port
->txCredits
-= count
;
1319 edge_port
->icount
.tx
+= count
;
1321 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
1323 /* something went wrong */
1324 dev_err_console(edge_port
->port
,
1325 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1327 edge_port
->write_in_progress
= false;
1329 /* revert the credits as something bad happened. */
1330 edge_port
->txCredits
+= count
;
1331 edge_port
->icount
.tx
-= count
;
1333 dev_dbg(dev
, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1334 __func__
, count
, edge_port
->txCredits
, fifo
->count
);
1337 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1341 /*****************************************************************************
1343 * this function is called by the tty driver when it wants to know how
1344 * many bytes of data we can accept for a specific port. If successful,
1345 * we return the amount of room that we have for this port (the txCredits)
1346 * otherwise we return a negative error number.
1347 *****************************************************************************/
1348 static int edge_write_room(struct tty_struct
*tty
)
1350 struct usb_serial_port
*port
= tty
->driver_data
;
1351 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1353 unsigned long flags
;
1355 if (edge_port
== NULL
)
1357 if (edge_port
->closePending
)
1360 if (!edge_port
->open
) {
1361 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1365 /* total of both buffers is still txCredit */
1366 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1367 room
= edge_port
->txCredits
- edge_port
->txfifo
.count
;
1368 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1370 dev_dbg(&port
->dev
, "%s - returns %d\n", __func__
, room
);
1375 /*****************************************************************************
1376 * edge_chars_in_buffer
1377 * this function is called by the tty driver when it wants to know how
1378 * many bytes of data we currently have outstanding in the port (data that
1379 * has been written, but hasn't made it out the port yet)
1380 * If successful, we return the number of bytes left to be written in the
1382 * Otherwise we return a negative error number.
1383 *****************************************************************************/
1384 static int edge_chars_in_buffer(struct tty_struct
*tty
)
1386 struct usb_serial_port
*port
= tty
->driver_data
;
1387 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1389 unsigned long flags
;
1391 if (edge_port
== NULL
)
1393 if (edge_port
->closePending
)
1396 if (!edge_port
->open
) {
1397 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1401 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1402 num_chars
= edge_port
->maxTxCredits
- edge_port
->txCredits
+
1403 edge_port
->txfifo
.count
;
1404 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1406 dev_dbg(&port
->dev
, "%s(port %d) - returns %d\n", __func__
,
1407 port
->number
, num_chars
);
1414 /*****************************************************************************
1416 * this function is called by the tty driver when it wants to stop the data
1417 * being read from the port.
1418 *****************************************************************************/
1419 static void edge_throttle(struct tty_struct
*tty
)
1421 struct usb_serial_port
*port
= tty
->driver_data
;
1422 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1425 if (edge_port
== NULL
)
1428 if (!edge_port
->open
) {
1429 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1433 /* if we are implementing XON/XOFF, send the stop character */
1435 unsigned char stop_char
= STOP_CHAR(tty
);
1436 status
= edge_write(tty
, port
, &stop_char
, 1);
1441 /* if we are implementing RTS/CTS, toggle that line */
1442 if (tty
->termios
.c_cflag
& CRTSCTS
) {
1443 edge_port
->shadowMCR
&= ~MCR_RTS
;
1444 status
= send_cmd_write_uart_register(edge_port
, MCR
,
1445 edge_port
->shadowMCR
);
1452 /*****************************************************************************
1454 * this function is called by the tty driver when it wants to resume the
1455 * data being read from the port (called after SerialThrottle is called)
1456 *****************************************************************************/
1457 static void edge_unthrottle(struct tty_struct
*tty
)
1459 struct usb_serial_port
*port
= tty
->driver_data
;
1460 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1463 if (edge_port
== NULL
)
1466 if (!edge_port
->open
) {
1467 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1471 /* if we are implementing XON/XOFF, send the start character */
1473 unsigned char start_char
= START_CHAR(tty
);
1474 status
= edge_write(tty
, port
, &start_char
, 1);
1478 /* if we are implementing RTS/CTS, toggle that line */
1479 if (tty
->termios
.c_cflag
& CRTSCTS
) {
1480 edge_port
->shadowMCR
|= MCR_RTS
;
1481 send_cmd_write_uart_register(edge_port
, MCR
,
1482 edge_port
->shadowMCR
);
1487 /*****************************************************************************
1489 * this function is called by the tty driver when it wants to change
1490 * the termios structure
1491 *****************************************************************************/
1492 static void edge_set_termios(struct tty_struct
*tty
,
1493 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
1495 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1498 cflag
= tty
->termios
.c_cflag
;
1499 dev_dbg(&port
->dev
, "%s - clfag %08x iflag %08x\n", __func__
, tty
->termios
.c_cflag
, tty
->termios
.c_iflag
);
1500 dev_dbg(&port
->dev
, "%s - old clfag %08x old iflag %08x\n", __func__
, old_termios
->c_cflag
, old_termios
->c_iflag
);
1502 if (edge_port
== NULL
)
1505 if (!edge_port
->open
) {
1506 dev_dbg(&port
->dev
, "%s - port not opened\n", __func__
);
1510 /* change the port settings to the new ones specified */
1511 change_port_settings(tty
, edge_port
, old_termios
);
1515 /*****************************************************************************
1516 * get_lsr_info - get line status register info
1518 * Purpose: Let user call ioctl() to get info when the UART physically
1519 * is emptied. On bus types like RS485, the transmitter must
1520 * release the bus after transmitting. This must be done when
1521 * the transmit shift register is empty, not be done when the
1522 * transmit holding register is empty. This functionality
1523 * allows an RS485 driver to be written in user space.
1524 *****************************************************************************/
1525 static int get_lsr_info(struct edgeport_port
*edge_port
,
1526 unsigned int __user
*value
)
1528 unsigned int result
= 0;
1529 unsigned long flags
;
1531 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1532 if (edge_port
->maxTxCredits
== edge_port
->txCredits
&&
1533 edge_port
->txfifo
.count
== 0) {
1534 dev_dbg(&edge_port
->port
->dev
, "%s -- Empty\n", __func__
);
1535 result
= TIOCSER_TEMT
;
1537 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1539 if (copy_to_user(value
, &result
, sizeof(int)))
1544 static int edge_tiocmset(struct tty_struct
*tty
,
1545 unsigned int set
, unsigned int clear
)
1547 struct usb_serial_port
*port
= tty
->driver_data
;
1548 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1551 mcr
= edge_port
->shadowMCR
;
1552 if (set
& TIOCM_RTS
)
1554 if (set
& TIOCM_DTR
)
1556 if (set
& TIOCM_LOOP
)
1557 mcr
|= MCR_LOOPBACK
;
1559 if (clear
& TIOCM_RTS
)
1561 if (clear
& TIOCM_DTR
)
1563 if (clear
& TIOCM_LOOP
)
1564 mcr
&= ~MCR_LOOPBACK
;
1566 edge_port
->shadowMCR
= mcr
;
1568 send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1573 static int edge_tiocmget(struct tty_struct
*tty
)
1575 struct usb_serial_port
*port
= tty
->driver_data
;
1576 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1577 unsigned int result
= 0;
1581 msr
= edge_port
->shadowMSR
;
1582 mcr
= edge_port
->shadowMCR
;
1583 result
= ((mcr
& MCR_DTR
) ? TIOCM_DTR
: 0) /* 0x002 */
1584 | ((mcr
& MCR_RTS
) ? TIOCM_RTS
: 0) /* 0x004 */
1585 | ((msr
& EDGEPORT_MSR_CTS
) ? TIOCM_CTS
: 0) /* 0x020 */
1586 | ((msr
& EDGEPORT_MSR_CD
) ? TIOCM_CAR
: 0) /* 0x040 */
1587 | ((msr
& EDGEPORT_MSR_RI
) ? TIOCM_RI
: 0) /* 0x080 */
1588 | ((msr
& EDGEPORT_MSR_DSR
) ? TIOCM_DSR
: 0); /* 0x100 */
1593 static int edge_get_icount(struct tty_struct
*tty
,
1594 struct serial_icounter_struct
*icount
)
1596 struct usb_serial_port
*port
= tty
->driver_data
;
1597 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1598 struct async_icount cnow
;
1599 cnow
= edge_port
->icount
;
1601 icount
->cts
= cnow
.cts
;
1602 icount
->dsr
= cnow
.dsr
;
1603 icount
->rng
= cnow
.rng
;
1604 icount
->dcd
= cnow
.dcd
;
1605 icount
->rx
= cnow
.rx
;
1606 icount
->tx
= cnow
.tx
;
1607 icount
->frame
= cnow
.frame
;
1608 icount
->overrun
= cnow
.overrun
;
1609 icount
->parity
= cnow
.parity
;
1610 icount
->brk
= cnow
.brk
;
1611 icount
->buf_overrun
= cnow
.buf_overrun
;
1613 dev_dbg(&port
->dev
, "%s (%d) TIOCGICOUNT RX=%d, TX=%d\n", __func__
,
1614 port
->number
, icount
->rx
, icount
->tx
);
1618 static int get_serial_info(struct edgeport_port
*edge_port
,
1619 struct serial_struct __user
*retinfo
)
1621 struct serial_struct tmp
;
1626 memset(&tmp
, 0, sizeof(tmp
));
1628 tmp
.type
= PORT_16550A
;
1629 tmp
.line
= edge_port
->port
->serial
->minor
;
1630 tmp
.port
= edge_port
->port
->number
;
1632 tmp
.flags
= ASYNC_SKIP_TEST
| ASYNC_AUTO_IRQ
;
1633 tmp
.xmit_fifo_size
= edge_port
->maxTxCredits
;
1634 tmp
.baud_base
= 9600;
1635 tmp
.close_delay
= 5*HZ
;
1636 tmp
.closing_wait
= 30*HZ
;
1638 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
1644 /*****************************************************************************
1646 * this function handles any ioctl calls to the driver
1647 *****************************************************************************/
1648 static int edge_ioctl(struct tty_struct
*tty
,
1649 unsigned int cmd
, unsigned long arg
)
1651 struct usb_serial_port
*port
= tty
->driver_data
;
1653 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1654 struct async_icount cnow
;
1655 struct async_icount cprev
;
1657 dev_dbg(&port
->dev
, "%s - port %d, cmd = 0x%x\n", __func__
, port
->number
, cmd
);
1661 dev_dbg(&port
->dev
, "%s (%d) TIOCSERGETLSR\n", __func__
, port
->number
);
1662 return get_lsr_info(edge_port
, (unsigned int __user
*) arg
);
1665 dev_dbg(&port
->dev
, "%s (%d) TIOCGSERIAL\n", __func__
, port
->number
);
1666 return get_serial_info(edge_port
, (struct serial_struct __user
*) arg
);
1669 dev_dbg(&port
->dev
, "%s (%d) TIOCMIWAIT\n", __func__
, port
->number
);
1670 cprev
= edge_port
->icount
;
1672 prepare_to_wait(&edge_port
->delta_msr_wait
,
1673 &wait
, TASK_INTERRUPTIBLE
);
1675 finish_wait(&edge_port
->delta_msr_wait
, &wait
);
1676 /* see if a signal did it */
1677 if (signal_pending(current
))
1678 return -ERESTARTSYS
;
1679 cnow
= edge_port
->icount
;
1680 if (cnow
.rng
== cprev
.rng
&& cnow
.dsr
== cprev
.dsr
&&
1681 cnow
.dcd
== cprev
.dcd
&& cnow
.cts
== cprev
.cts
)
1682 return -EIO
; /* no change => error */
1683 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1684 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1685 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
1686 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
))) {
1695 return -ENOIOCTLCMD
;
1699 /*****************************************************************************
1701 * this function sends a break to the port
1702 *****************************************************************************/
1703 static void edge_break(struct tty_struct
*tty
, int break_state
)
1705 struct usb_serial_port
*port
= tty
->driver_data
;
1706 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1707 struct edgeport_serial
*edge_serial
= usb_get_serial_data(port
->serial
);
1710 if ((!edge_serial
->is_epic
) ||
1711 ((edge_serial
->is_epic
) &&
1712 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1713 /* flush and chase */
1714 edge_port
->chaseResponsePending
= true;
1716 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__
);
1717 status
= send_iosp_ext_cmd(edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1719 /* block until chase finished */
1720 block_until_chase_response(edge_port
);
1722 edge_port
->chaseResponsePending
= false;
1726 if ((!edge_serial
->is_epic
) ||
1727 ((edge_serial
->is_epic
) &&
1728 (edge_serial
->epic_descriptor
.Supports
.IOSPSetClrBreak
))) {
1729 if (break_state
== -1) {
1730 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__
);
1731 status
= send_iosp_ext_cmd(edge_port
,
1732 IOSP_CMD_SET_BREAK
, 0);
1734 dev_dbg(&port
->dev
, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__
);
1735 status
= send_iosp_ext_cmd(edge_port
,
1736 IOSP_CMD_CLEAR_BREAK
, 0);
1739 dev_dbg(&port
->dev
, "%s - error sending break set/clear command.\n",
1745 /*****************************************************************************
1747 * this function handles the data received on the bulk in pipe.
1748 *****************************************************************************/
1749 static void process_rcvd_data(struct edgeport_serial
*edge_serial
,
1750 unsigned char *buffer
, __u16 bufferLength
)
1752 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
1753 struct usb_serial_port
*port
;
1754 struct edgeport_port
*edge_port
;
1755 struct tty_struct
*tty
;
1756 __u16 lastBufferLength
;
1759 lastBufferLength
= bufferLength
+ 1;
1761 while (bufferLength
> 0) {
1762 /* failsafe incase we get a message that we don't understand */
1763 if (lastBufferLength
== bufferLength
) {
1764 dev_dbg(dev
, "%s - stuck in loop, exiting it.\n", __func__
);
1767 lastBufferLength
= bufferLength
;
1769 switch (edge_serial
->rxState
) {
1771 edge_serial
->rxHeader1
= *buffer
;
1775 if (bufferLength
== 0) {
1776 edge_serial
->rxState
= EXPECT_HDR2
;
1779 /* otherwise, drop on through */
1781 edge_serial
->rxHeader2
= *buffer
;
1785 dev_dbg(dev
, "%s - Hdr1=%02X Hdr2=%02X\n", __func__
,
1786 edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1787 /* Process depending on whether this header is
1790 if (IS_CMD_STAT_HDR(edge_serial
->rxHeader1
)) {
1791 /* Decode this status header and go to
1792 * EXPECT_HDR1 (if we can process the status
1793 * with only 2 bytes), or go to EXPECT_HDR3 to
1794 * get the third byte. */
1795 edge_serial
->rxPort
=
1796 IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1797 edge_serial
->rxStatusCode
=
1798 IOSP_GET_STATUS_CODE(
1799 edge_serial
->rxHeader1
);
1801 if (!IOSP_STATUS_IS_2BYTE(
1802 edge_serial
->rxStatusCode
)) {
1803 /* This status needs additional bytes.
1804 * Save what we have and then wait for
1807 edge_serial
->rxStatusParam
1808 = edge_serial
->rxHeader2
;
1809 edge_serial
->rxState
= EXPECT_HDR3
;
1812 /* We have all the header bytes, process the
1814 process_rcvd_status(edge_serial
,
1815 edge_serial
->rxHeader2
, 0);
1816 edge_serial
->rxState
= EXPECT_HDR1
;
1819 edge_serial
->rxPort
=
1820 IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1821 edge_serial
->rxBytesRemaining
=
1822 IOSP_GET_HDR_DATA_LEN(
1823 edge_serial
->rxHeader1
,
1824 edge_serial
->rxHeader2
);
1825 dev_dbg(dev
, "%s - Data for Port %u Len %u\n",
1827 edge_serial
->rxPort
,
1828 edge_serial
->rxBytesRemaining
);
1830 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1831 * ASSERT(DevExt->RxBytesRemaining <
1832 * IOSP_MAX_DATA_LENGTH);
1835 if (bufferLength
== 0) {
1836 edge_serial
->rxState
= EXPECT_DATA
;
1839 /* Else, drop through */
1841 case EXPECT_DATA
: /* Expect data */
1842 if (bufferLength
< edge_serial
->rxBytesRemaining
) {
1843 rxLen
= bufferLength
;
1844 /* Expect data to start next buffer */
1845 edge_serial
->rxState
= EXPECT_DATA
;
1847 /* BufLen >= RxBytesRemaining */
1848 rxLen
= edge_serial
->rxBytesRemaining
;
1849 /* Start another header next time */
1850 edge_serial
->rxState
= EXPECT_HDR1
;
1853 bufferLength
-= rxLen
;
1854 edge_serial
->rxBytesRemaining
-= rxLen
;
1856 /* spit this data back into the tty driver if this
1859 port
= edge_serial
->serial
->port
[
1860 edge_serial
->rxPort
];
1861 edge_port
= usb_get_serial_port_data(port
);
1862 if (edge_port
->open
) {
1863 tty
= tty_port_tty_get(
1864 &edge_port
->port
->port
);
1866 dev_dbg(dev
, "%s - Sending %d bytes to TTY for port %d\n",
1867 __func__
, rxLen
, edge_serial
->rxPort
);
1868 edge_tty_recv(&edge_serial
->serial
->dev
->dev
, tty
, buffer
, rxLen
);
1871 edge_port
->icount
.rx
+= rxLen
;
1877 case EXPECT_HDR3
: /* Expect 3rd byte of status header */
1878 edge_serial
->rxHeader3
= *buffer
;
1882 /* We have all the header bytes, process the
1884 process_rcvd_status(edge_serial
,
1885 edge_serial
->rxStatusParam
,
1886 edge_serial
->rxHeader3
);
1887 edge_serial
->rxState
= EXPECT_HDR1
;
1894 /*****************************************************************************
1895 * process_rcvd_status
1896 * this function handles the any status messages received on the
1898 *****************************************************************************/
1899 static void process_rcvd_status(struct edgeport_serial
*edge_serial
,
1900 __u8 byte2
, __u8 byte3
)
1902 struct usb_serial_port
*port
;
1903 struct edgeport_port
*edge_port
;
1904 struct tty_struct
*tty
;
1906 __u8 code
= edge_serial
->rxStatusCode
;
1908 /* switch the port pointer to the one being currently talked about */
1909 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1910 edge_port
= usb_get_serial_port_data(port
);
1911 if (edge_port
== NULL
) {
1912 dev_err(&edge_serial
->serial
->dev
->dev
,
1913 "%s - edge_port == NULL for port %d\n",
1914 __func__
, edge_serial
->rxPort
);
1919 if (code
== IOSP_EXT_STATUS
) {
1921 case IOSP_EXT_STATUS_CHASE_RSP
:
1922 /* we want to do EXT status regardless of port
1924 dev_dbg(dev
, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1925 __func__
, edge_serial
->rxPort
, byte3
);
1926 /* Currently, the only EXT_STATUS is Chase, so process
1927 * here instead of one more call to one more subroutine
1928 * If/when more EXT_STATUS, there'll be more work to do
1929 * Also, we currently clear flag and close the port
1930 * regardless of content of above's Byte3.
1931 * We could choose to do something else when Byte3 says
1932 * Timeout on Chase from Edgeport, like wait longer in
1933 * block_until_chase_response, but for now we don't.
1935 edge_port
->chaseResponsePending
= false;
1936 wake_up(&edge_port
->wait_chase
);
1939 case IOSP_EXT_STATUS_RX_CHECK_RSP
:
1940 dev_dbg(dev
, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1941 __func__
, edge_serial
->rxPort
, byte3
);
1942 /* Port->RxCheckRsp = true; */
1947 if (code
== IOSP_STATUS_OPEN_RSP
) {
1948 edge_port
->txCredits
= GET_TX_BUFFER_SIZE(byte3
);
1949 edge_port
->maxTxCredits
= edge_port
->txCredits
;
1950 dev_dbg(dev
, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1951 __func__
, edge_serial
->rxPort
, byte2
, edge_port
->txCredits
);
1952 handle_new_msr(edge_port
, byte2
);
1954 /* send the current line settings to the port so we are
1955 in sync with any further termios calls */
1956 tty
= tty_port_tty_get(&edge_port
->port
->port
);
1958 change_port_settings(tty
,
1959 edge_port
, &tty
->termios
);
1963 /* we have completed the open */
1964 edge_port
->openPending
= false;
1965 edge_port
->open
= true;
1966 wake_up(&edge_port
->wait_open
);
1970 /* If port is closed, silently discard all rcvd status. We can
1971 * have cases where buffered status is received AFTER the close
1972 * port command is sent to the Edgeport.
1974 if (!edge_port
->open
|| edge_port
->closePending
)
1978 /* Not currently sent by Edgeport */
1979 case IOSP_STATUS_LSR
:
1980 dev_dbg(dev
, "%s - Port %u LSR Status = %02x\n",
1981 __func__
, edge_serial
->rxPort
, byte2
);
1982 handle_new_lsr(edge_port
, false, byte2
, 0);
1985 case IOSP_STATUS_LSR_DATA
:
1986 dev_dbg(dev
, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1987 __func__
, edge_serial
->rxPort
, byte2
, byte3
);
1988 /* byte2 is LSR Register */
1989 /* byte3 is broken data byte */
1990 handle_new_lsr(edge_port
, true, byte2
, byte3
);
1993 * case IOSP_EXT_4_STATUS:
1994 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1995 * __func__, edge_serial->rxPort, byte2, byte3);
1998 case IOSP_STATUS_MSR
:
1999 dev_dbg(dev
, "%s - Port %u MSR Status = %02x\n",
2000 __func__
, edge_serial
->rxPort
, byte2
);
2002 * Process this new modem status and generate appropriate
2003 * events, etc, based on the new status. This routine
2004 * also saves the MSR in Port->ShadowMsr.
2006 handle_new_msr(edge_port
, byte2
);
2010 dev_dbg(dev
, "%s - Unrecognized IOSP status code %u\n", __func__
, code
);
2016 /*****************************************************************************
2018 * this function passes data on to the tty flip buffer
2019 *****************************************************************************/
2020 static void edge_tty_recv(struct device
*dev
, struct tty_struct
*tty
,
2021 unsigned char *data
, int length
)
2025 cnt
= tty_insert_flip_string(tty
, data
, length
);
2027 dev_err(dev
, "%s - dropping data, %d bytes lost\n",
2028 __func__
, length
- cnt
);
2033 tty_flip_buffer_push(tty
);
2037 /*****************************************************************************
2039 * this function handles any change to the msr register for a port.
2040 *****************************************************************************/
2041 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
)
2043 struct async_icount
*icount
;
2045 if (newMsr
& (EDGEPORT_MSR_DELTA_CTS
| EDGEPORT_MSR_DELTA_DSR
|
2046 EDGEPORT_MSR_DELTA_RI
| EDGEPORT_MSR_DELTA_CD
)) {
2047 icount
= &edge_port
->icount
;
2049 /* update input line counters */
2050 if (newMsr
& EDGEPORT_MSR_DELTA_CTS
)
2052 if (newMsr
& EDGEPORT_MSR_DELTA_DSR
)
2054 if (newMsr
& EDGEPORT_MSR_DELTA_CD
)
2056 if (newMsr
& EDGEPORT_MSR_DELTA_RI
)
2058 wake_up_interruptible(&edge_port
->delta_msr_wait
);
2061 /* Save the new modem status */
2062 edge_port
->shadowMSR
= newMsr
& 0xf0;
2066 /*****************************************************************************
2068 * this function handles any change to the lsr register for a port.
2069 *****************************************************************************/
2070 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
,
2071 __u8 lsr
, __u8 data
)
2073 __u8 newLsr
= (__u8
) (lsr
& (__u8
)
2074 (LSR_OVER_ERR
| LSR_PAR_ERR
| LSR_FRM_ERR
| LSR_BREAK
));
2075 struct async_icount
*icount
;
2077 edge_port
->shadowLSR
= lsr
;
2079 if (newLsr
& LSR_BREAK
) {
2081 * Parity and Framing errors only count if they
2082 * occur exclusive of a break being
2085 newLsr
&= (__u8
)(LSR_OVER_ERR
| LSR_BREAK
);
2088 /* Place LSR data byte into Rx buffer */
2090 struct tty_struct
*tty
=
2091 tty_port_tty_get(&edge_port
->port
->port
);
2093 edge_tty_recv(&edge_port
->port
->dev
, tty
, &data
, 1);
2097 /* update input line counters */
2098 icount
= &edge_port
->icount
;
2099 if (newLsr
& LSR_BREAK
)
2101 if (newLsr
& LSR_OVER_ERR
)
2103 if (newLsr
& LSR_PAR_ERR
)
2105 if (newLsr
& LSR_FRM_ERR
)
2110 /****************************************************************************
2112 * writes a number of bytes to the Edgeport device's sram starting at the
2114 * If successful returns the number of bytes written, otherwise it returns
2115 * a negative error number of the problem.
2116 ****************************************************************************/
2117 static int sram_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
2118 __u16 length
, const __u8
*data
)
2121 __u16 current_length
;
2122 unsigned char *transfer_buffer
;
2124 dev_dbg(&serial
->dev
->dev
, "%s - %x, %x, %d\n", __func__
, extAddr
, addr
, length
);
2126 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2127 if (!transfer_buffer
) {
2128 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n",
2133 /* need to split these writes up into 64 byte chunks */
2135 while (length
> 0) {
2137 current_length
= 64;
2139 current_length
= length
;
2141 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
2142 memcpy(transfer_buffer
, data
, current_length
);
2143 result
= usb_control_msg(serial
->dev
,
2144 usb_sndctrlpipe(serial
->dev
, 0),
2145 USB_REQUEST_ION_WRITE_RAM
,
2146 0x40, addr
, extAddr
, transfer_buffer
,
2147 current_length
, 300);
2150 length
-= current_length
;
2151 addr
+= current_length
;
2152 data
+= current_length
;
2155 kfree(transfer_buffer
);
2160 /****************************************************************************
2162 * writes a number of bytes to the Edgeport device's ROM starting at the
2164 * If successful returns the number of bytes written, otherwise it returns
2165 * a negative error number of the problem.
2166 ****************************************************************************/
2167 static int rom_write(struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
,
2168 __u16 length
, const __u8
*data
)
2171 __u16 current_length
;
2172 unsigned char *transfer_buffer
;
2174 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2175 if (!transfer_buffer
) {
2176 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n",
2181 /* need to split these writes up into 64 byte chunks */
2183 while (length
> 0) {
2185 current_length
= 64;
2187 current_length
= length
;
2188 memcpy(transfer_buffer
, data
, current_length
);
2189 result
= usb_control_msg(serial
->dev
,
2190 usb_sndctrlpipe(serial
->dev
, 0),
2191 USB_REQUEST_ION_WRITE_ROM
, 0x40,
2193 transfer_buffer
, current_length
, 300);
2196 length
-= current_length
;
2197 addr
+= current_length
;
2198 data
+= current_length
;
2201 kfree(transfer_buffer
);
2206 /****************************************************************************
2208 * reads a number of bytes from the Edgeport device starting at the given
2210 * If successful returns the number of bytes read, otherwise it returns
2211 * a negative error number of the problem.
2212 ****************************************************************************/
2213 static int rom_read(struct usb_serial
*serial
, __u16 extAddr
,
2214 __u16 addr
, __u16 length
, __u8
*data
)
2217 __u16 current_length
;
2218 unsigned char *transfer_buffer
;
2220 transfer_buffer
= kmalloc(64, GFP_KERNEL
);
2221 if (!transfer_buffer
) {
2222 dev_err(&serial
->dev
->dev
,
2223 "%s - kmalloc(%d) failed.\n", __func__
, 64);
2227 /* need to split these reads up into 64 byte chunks */
2229 while (length
> 0) {
2231 current_length
= 64;
2233 current_length
= length
;
2234 result
= usb_control_msg(serial
->dev
,
2235 usb_rcvctrlpipe(serial
->dev
, 0),
2236 USB_REQUEST_ION_READ_ROM
,
2237 0xC0, addr
, extAddr
, transfer_buffer
,
2238 current_length
, 300);
2241 memcpy(data
, transfer_buffer
, current_length
);
2242 length
-= current_length
;
2243 addr
+= current_length
;
2244 data
+= current_length
;
2247 kfree(transfer_buffer
);
2252 /****************************************************************************
2254 * Is used to send a IOSP message to the Edgeport device
2255 ****************************************************************************/
2256 static int send_iosp_ext_cmd(struct edgeport_port
*edge_port
,
2257 __u8 command
, __u8 param
)
2259 unsigned char *buffer
;
2260 unsigned char *currentCommand
;
2264 buffer
= kmalloc(10, GFP_ATOMIC
);
2266 dev_err(&edge_port
->port
->dev
,
2267 "%s - kmalloc(%d) failed.\n", __func__
, 10);
2271 currentCommand
= buffer
;
2273 MAKE_CMD_EXT_CMD(¤tCommand
, &length
,
2274 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2277 status
= write_cmd_usb(edge_port
, buffer
, length
);
2279 /* something bad happened, let's free up the memory */
2287 /*****************************************************************************
2289 * this function writes the given buffer out to the bulk write endpoint.
2290 *****************************************************************************/
2291 static int write_cmd_usb(struct edgeport_port
*edge_port
,
2292 unsigned char *buffer
, int length
)
2294 struct edgeport_serial
*edge_serial
=
2295 usb_get_serial_data(edge_port
->port
->serial
);
2296 struct device
*dev
= &edge_port
->port
->dev
;
2300 usb_serial_debug_data(dev
, __func__
, length
, buffer
);
2302 /* Allocate our next urb */
2303 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
2307 atomic_inc(&CmdUrbs
);
2308 dev_dbg(dev
, "%s - ALLOCATE URB %p (outstanding %d)\n",
2309 __func__
, urb
, atomic_read(&CmdUrbs
));
2311 usb_fill_bulk_urb(urb
, edge_serial
->serial
->dev
,
2312 usb_sndbulkpipe(edge_serial
->serial
->dev
,
2313 edge_serial
->bulk_out_endpoint
),
2314 buffer
, length
, edge_bulk_out_cmd_callback
, edge_port
);
2316 edge_port
->commandPending
= true;
2317 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
2320 /* something went wrong */
2321 dev_err(dev
, "%s - usb_submit_urb(write command) failed, status = %d\n",
2325 atomic_dec(&CmdUrbs
);
2330 wait_event(&edge_port
->wait_command
, !edge_port
->commandPending
);
2332 if (edge_port
->commandPending
) {
2333 /* command timed out */
2334 dev_dbg(dev
, "%s - command timed out\n", __func__
);
2342 /*****************************************************************************
2343 * send_cmd_write_baud_rate
2344 * this function sends the proper command to change the baud rate of the
2346 *****************************************************************************/
2347 static int send_cmd_write_baud_rate(struct edgeport_port
*edge_port
,
2350 struct edgeport_serial
*edge_serial
=
2351 usb_get_serial_data(edge_port
->port
->serial
);
2352 struct device
*dev
= &edge_port
->port
->dev
;
2353 unsigned char *cmdBuffer
;
2354 unsigned char *currCmd
;
2358 unsigned char number
=
2359 edge_port
->port
->number
- edge_port
->port
->serial
->minor
;
2361 if (edge_serial
->is_epic
&&
2362 !edge_serial
->epic_descriptor
.Supports
.IOSPSetBaudRate
) {
2363 dev_dbg(dev
, "SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d\n",
2364 edge_port
->port
->number
, baudRate
);
2368 dev_dbg(dev
, "%s - port = %d, baud = %d\n", __func__
,
2369 edge_port
->port
->number
, baudRate
);
2371 status
= calc_baud_rate_divisor(dev
, baudRate
, &divisor
);
2373 dev_err(dev
, "%s - bad baud rate\n", __func__
);
2377 /* Alloc memory for the string of commands. */
2378 cmdBuffer
= kmalloc(0x100, GFP_ATOMIC
);
2380 dev_err(dev
, "%s - kmalloc(%d) failed.\n", __func__
, 0x100);
2383 currCmd
= cmdBuffer
;
2385 /* Enable access to divisor latch */
2386 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, LCR
, LCR_DL_ENABLE
);
2388 /* Write the divisor itself */
2389 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, DLL
, LOW8(divisor
));
2390 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, DLM
, HIGH8(divisor
));
2392 /* Restore original value to disable access to divisor latch */
2393 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
, number
, LCR
,
2394 edge_port
->shadowLCR
);
2396 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2398 /* something bad happened, let's free up the memory */
2406 /*****************************************************************************
2407 * calc_baud_rate_divisor
2408 * this function calculates the proper baud rate divisor for the specified
2410 *****************************************************************************/
2411 static int calc_baud_rate_divisor(struct device
*dev
, int baudrate
, int *divisor
)
2416 for (i
= 0; i
< ARRAY_SIZE(divisor_table
); i
++) {
2417 if (divisor_table
[i
].BaudRate
== baudrate
) {
2418 *divisor
= divisor_table
[i
].Divisor
;
2423 /* We have tried all of the standard baud rates
2424 * lets try to calculate the divisor for this baud rate
2425 * Make sure the baud rate is reasonable */
2426 if (baudrate
> 50 && baudrate
< 230400) {
2428 custom
= (__u16
)((230400L + baudrate
/2) / baudrate
);
2432 dev_dbg(dev
, "%s - Baud %d = %d\n", __func__
, baudrate
, custom
);
2440 /*****************************************************************************
2441 * send_cmd_write_uart_register
2442 * this function builds up a uart register message and sends to the device.
2443 *****************************************************************************/
2444 static int send_cmd_write_uart_register(struct edgeport_port
*edge_port
,
2445 __u8 regNum
, __u8 regValue
)
2447 struct edgeport_serial
*edge_serial
=
2448 usb_get_serial_data(edge_port
->port
->serial
);
2449 struct device
*dev
= &edge_port
->port
->dev
;
2450 unsigned char *cmdBuffer
;
2451 unsigned char *currCmd
;
2452 unsigned long cmdLen
= 0;
2455 dev_dbg(dev
, "%s - write to %s register 0x%02x\n",
2456 (regNum
== MCR
) ? "MCR" : "LCR", __func__
, regValue
);
2458 if (edge_serial
->is_epic
&&
2459 !edge_serial
->epic_descriptor
.Supports
.IOSPWriteMCR
&&
2461 dev_dbg(dev
, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2465 if (edge_serial
->is_epic
&&
2466 !edge_serial
->epic_descriptor
.Supports
.IOSPWriteLCR
&&
2468 dev_dbg(dev
, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2472 /* Alloc memory for the string of commands. */
2473 cmdBuffer
= kmalloc(0x10, GFP_ATOMIC
);
2474 if (cmdBuffer
== NULL
)
2477 currCmd
= cmdBuffer
;
2479 /* Build a cmd in the buffer to write the given register */
2480 MAKE_CMD_WRITE_REG(&currCmd
, &cmdLen
,
2481 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2484 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2486 /* something bad happened, let's free up the memory */
2494 /*****************************************************************************
2495 * change_port_settings
2496 * This routine is called to set the UART on the device to match the
2497 * specified new settings.
2498 *****************************************************************************/
2500 static void change_port_settings(struct tty_struct
*tty
,
2501 struct edgeport_port
*edge_port
, struct ktermios
*old_termios
)
2503 struct device
*dev
= &edge_port
->port
->dev
;
2504 struct edgeport_serial
*edge_serial
=
2505 usb_get_serial_data(edge_port
->port
->serial
);
2516 dev_dbg(dev
, "%s - port %d\n", __func__
, edge_port
->port
->number
);
2518 if (!edge_port
->open
&&
2519 !edge_port
->openPending
) {
2520 dev_dbg(dev
, "%s - port not opened\n", __func__
);
2524 cflag
= tty
->termios
.c_cflag
;
2526 switch (cflag
& CSIZE
) {
2528 lData
= LCR_BITS_5
; mask
= 0x1f;
2529 dev_dbg(dev
, "%s - data bits = 5\n", __func__
);
2532 lData
= LCR_BITS_6
; mask
= 0x3f;
2533 dev_dbg(dev
, "%s - data bits = 6\n", __func__
);
2536 lData
= LCR_BITS_7
; mask
= 0x7f;
2537 dev_dbg(dev
, "%s - data bits = 7\n", __func__
);
2542 dev_dbg(dev
, "%s - data bits = 8\n", __func__
);
2546 lParity
= LCR_PAR_NONE
;
2547 if (cflag
& PARENB
) {
2548 if (cflag
& CMSPAR
) {
2549 if (cflag
& PARODD
) {
2550 lParity
= LCR_PAR_MARK
;
2551 dev_dbg(dev
, "%s - parity = mark\n", __func__
);
2553 lParity
= LCR_PAR_SPACE
;
2554 dev_dbg(dev
, "%s - parity = space\n", __func__
);
2556 } else if (cflag
& PARODD
) {
2557 lParity
= LCR_PAR_ODD
;
2558 dev_dbg(dev
, "%s - parity = odd\n", __func__
);
2560 lParity
= LCR_PAR_EVEN
;
2561 dev_dbg(dev
, "%s - parity = even\n", __func__
);
2564 dev_dbg(dev
, "%s - parity = none\n", __func__
);
2567 if (cflag
& CSTOPB
) {
2569 dev_dbg(dev
, "%s - stop bits = 2\n", __func__
);
2572 dev_dbg(dev
, "%s - stop bits = 1\n", __func__
);
2575 /* figure out the flow control settings */
2576 rxFlow
= txFlow
= 0x00;
2577 if (cflag
& CRTSCTS
) {
2578 rxFlow
|= IOSP_RX_FLOW_RTS
;
2579 txFlow
|= IOSP_TX_FLOW_CTS
;
2580 dev_dbg(dev
, "%s - RTS/CTS is enabled\n", __func__
);
2582 dev_dbg(dev
, "%s - RTS/CTS is disabled\n", __func__
);
2585 /* if we are implementing XON/XOFF, set the start and stop character
2587 if (I_IXOFF(tty
) || I_IXON(tty
)) {
2588 unsigned char stop_char
= STOP_CHAR(tty
);
2589 unsigned char start_char
= START_CHAR(tty
);
2591 if ((!edge_serial
->is_epic
) ||
2592 ((edge_serial
->is_epic
) &&
2593 (edge_serial
->epic_descriptor
.Supports
.IOSPSetXChar
))) {
2594 send_iosp_ext_cmd(edge_port
,
2595 IOSP_CMD_SET_XON_CHAR
, start_char
);
2596 send_iosp_ext_cmd(edge_port
,
2597 IOSP_CMD_SET_XOFF_CHAR
, stop_char
);
2600 /* if we are implementing INBOUND XON/XOFF */
2602 rxFlow
|= IOSP_RX_FLOW_XON_XOFF
;
2603 dev_dbg(dev
, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2604 __func__
, start_char
, stop_char
);
2606 dev_dbg(dev
, "%s - INBOUND XON/XOFF is disabled\n", __func__
);
2609 /* if we are implementing OUTBOUND XON/XOFF */
2611 txFlow
|= IOSP_TX_FLOW_XON_XOFF
;
2612 dev_dbg(dev
, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2613 __func__
, start_char
, stop_char
);
2615 dev_dbg(dev
, "%s - OUTBOUND XON/XOFF is disabled\n", __func__
);
2619 /* Set flow control to the configured value */
2620 if ((!edge_serial
->is_epic
) ||
2621 ((edge_serial
->is_epic
) &&
2622 (edge_serial
->epic_descriptor
.Supports
.IOSPSetRxFlow
)))
2623 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_RX_FLOW
, rxFlow
);
2624 if ((!edge_serial
->is_epic
) ||
2625 ((edge_serial
->is_epic
) &&
2626 (edge_serial
->epic_descriptor
.Supports
.IOSPSetTxFlow
)))
2627 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_TX_FLOW
, txFlow
);
2630 edge_port
->shadowLCR
&= ~(LCR_BITS_MASK
| LCR_STOP_MASK
| LCR_PAR_MASK
);
2631 edge_port
->shadowLCR
|= (lData
| lParity
| lStop
);
2633 edge_port
->validDataMask
= mask
;
2635 /* Send the updated LCR value to the EdgePort */
2636 status
= send_cmd_write_uart_register(edge_port
, LCR
,
2637 edge_port
->shadowLCR
);
2641 /* set up the MCR register and send it to the EdgePort */
2642 edge_port
->shadowMCR
= MCR_MASTER_IE
;
2644 edge_port
->shadowMCR
|= (MCR_DTR
| MCR_RTS
);
2646 status
= send_cmd_write_uart_register(edge_port
, MCR
,
2647 edge_port
->shadowMCR
);
2651 /* Determine divisor based on baud rate */
2652 baud
= tty_get_baud_rate(tty
);
2654 /* pick a default, any default... */
2658 dev_dbg(dev
, "%s - baud rate = %d\n", __func__
, baud
);
2659 status
= send_cmd_write_baud_rate(edge_port
, baud
);
2661 /* Speed change was not possible - put back the old speed */
2662 baud
= tty_termios_baud_rate(old_termios
);
2663 tty_encode_baud_rate(tty
, baud
, baud
);
2668 /****************************************************************************
2670 * Turns a string from Unicode into ASCII.
2671 * Doesn't do a good job with any characters that are outside the normal
2672 * ASCII range, but it's only for debugging...
2673 * NOTE: expects the unicode in LE format
2674 ****************************************************************************/
2675 static void unicode_to_ascii(char *string
, int buflen
,
2676 __le16
*unicode
, int unicode_size
)
2680 if (buflen
<= 0) /* never happens, but... */
2682 --buflen
; /* space for nul */
2684 for (i
= 0; i
< unicode_size
; i
++) {
2687 string
[i
] = (char)(le16_to_cpu(unicode
[i
]));
2693 /****************************************************************************
2694 * get_manufacturing_desc
2695 * reads in the manufacturing descriptor and stores it into the serial
2697 ****************************************************************************/
2698 static void get_manufacturing_desc(struct edgeport_serial
*edge_serial
)
2700 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
2703 dev_dbg(dev
, "getting manufacturer descriptor\n");
2705 response
= rom_read(edge_serial
->serial
,
2706 (EDGE_MANUF_DESC_ADDR
& 0xffff0000) >> 16,
2707 (__u16
)(EDGE_MANUF_DESC_ADDR
& 0x0000ffff),
2708 EDGE_MANUF_DESC_LEN
,
2709 (__u8
*)(&edge_serial
->manuf_descriptor
));
2712 dev_err(dev
, "error in getting manufacturer descriptor\n");
2715 dev_dbg(dev
, "**Manufacturer Descriptor\n");
2716 dev_dbg(dev
, " RomSize: %dK\n",
2717 edge_serial
->manuf_descriptor
.RomSize
);
2718 dev_dbg(dev
, " RamSize: %dK\n",
2719 edge_serial
->manuf_descriptor
.RamSize
);
2720 dev_dbg(dev
, " CpuRev: %d\n",
2721 edge_serial
->manuf_descriptor
.CpuRev
);
2722 dev_dbg(dev
, " BoardRev: %d\n",
2723 edge_serial
->manuf_descriptor
.BoardRev
);
2724 dev_dbg(dev
, " NumPorts: %d\n",
2725 edge_serial
->manuf_descriptor
.NumPorts
);
2726 dev_dbg(dev
, " DescDate: %d/%d/%d\n",
2727 edge_serial
->manuf_descriptor
.DescDate
[0],
2728 edge_serial
->manuf_descriptor
.DescDate
[1],
2729 edge_serial
->manuf_descriptor
.DescDate
[2]+1900);
2730 unicode_to_ascii(string
, sizeof(string
),
2731 edge_serial
->manuf_descriptor
.SerialNumber
,
2732 edge_serial
->manuf_descriptor
.SerNumLength
/2);
2733 dev_dbg(dev
, " SerialNumber: %s\n", string
);
2734 unicode_to_ascii(string
, sizeof(string
),
2735 edge_serial
->manuf_descriptor
.AssemblyNumber
,
2736 edge_serial
->manuf_descriptor
.AssemblyNumLength
/2);
2737 dev_dbg(dev
, " AssemblyNumber: %s\n", string
);
2738 unicode_to_ascii(string
, sizeof(string
),
2739 edge_serial
->manuf_descriptor
.OemAssyNumber
,
2740 edge_serial
->manuf_descriptor
.OemAssyNumLength
/2);
2741 dev_dbg(dev
, " OemAssyNumber: %s\n", string
);
2742 dev_dbg(dev
, " UartType: %d\n",
2743 edge_serial
->manuf_descriptor
.UartType
);
2744 dev_dbg(dev
, " IonPid: %d\n",
2745 edge_serial
->manuf_descriptor
.IonPid
);
2746 dev_dbg(dev
, " IonConfig: %d\n",
2747 edge_serial
->manuf_descriptor
.IonConfig
);
2752 /****************************************************************************
2754 * reads in the bootloader descriptor and stores it into the serial
2756 ****************************************************************************/
2757 static void get_boot_desc(struct edgeport_serial
*edge_serial
)
2759 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
2762 dev_dbg(dev
, "getting boot descriptor\n");
2764 response
= rom_read(edge_serial
->serial
,
2765 (EDGE_BOOT_DESC_ADDR
& 0xffff0000) >> 16,
2766 (__u16
)(EDGE_BOOT_DESC_ADDR
& 0x0000ffff),
2768 (__u8
*)(&edge_serial
->boot_descriptor
));
2771 dev_err(dev
, "error in getting boot descriptor\n");
2773 dev_dbg(dev
, "**Boot Descriptor:\n");
2774 dev_dbg(dev
, " BootCodeLength: %d\n",
2775 le16_to_cpu(edge_serial
->boot_descriptor
.BootCodeLength
));
2776 dev_dbg(dev
, " MajorVersion: %d\n",
2777 edge_serial
->boot_descriptor
.MajorVersion
);
2778 dev_dbg(dev
, " MinorVersion: %d\n",
2779 edge_serial
->boot_descriptor
.MinorVersion
);
2780 dev_dbg(dev
, " BuildNumber: %d\n",
2781 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
2782 dev_dbg(dev
, " Capabilities: 0x%x\n",
2783 le16_to_cpu(edge_serial
->boot_descriptor
.Capabilities
));
2784 dev_dbg(dev
, " UConfig0: %d\n",
2785 edge_serial
->boot_descriptor
.UConfig0
);
2786 dev_dbg(dev
, " UConfig1: %d\n",
2787 edge_serial
->boot_descriptor
.UConfig1
);
2792 /****************************************************************************
2793 * load_application_firmware
2794 * This is called to load the application firmware to the device
2795 ****************************************************************************/
2796 static void load_application_firmware(struct edgeport_serial
*edge_serial
)
2798 struct device
*dev
= &edge_serial
->serial
->dev
->dev
;
2799 const struct ihex_binrec
*rec
;
2800 const struct firmware
*fw
;
2801 const char *fw_name
;
2802 const char *fw_info
;
2807 switch (edge_serial
->product_info
.iDownloadFile
) {
2808 case EDGE_DOWNLOAD_FILE_I930
:
2809 fw_info
= "downloading firmware version (930)";
2810 fw_name
= "edgeport/down.fw";
2813 case EDGE_DOWNLOAD_FILE_80251
:
2814 fw_info
= "downloading firmware version (80251)";
2815 fw_name
= "edgeport/down2.fw";
2818 case EDGE_DOWNLOAD_FILE_NONE
:
2819 dev_dbg(dev
, "No download file specified, skipping download\n");
2826 response
= request_ihex_firmware(&fw
, fw_name
,
2827 &edge_serial
->serial
->dev
->dev
);
2829 dev_err(dev
, "Failed to load image \"%s\" err %d\n",
2834 rec
= (const struct ihex_binrec
*)fw
->data
;
2835 build
= (rec
->data
[2] << 8) | rec
->data
[3];
2837 dev_dbg(dev
, "%s %d.%d.%d\n", fw_info
, rec
->data
[0], rec
->data
[1], build
);
2839 edge_serial
->product_info
.FirmwareMajorVersion
= rec
->data
[0];
2840 edge_serial
->product_info
.FirmwareMinorVersion
= rec
->data
[1];
2841 edge_serial
->product_info
.FirmwareBuildNumber
= cpu_to_le16(build
);
2843 for (rec
= ihex_next_binrec(rec
); rec
;
2844 rec
= ihex_next_binrec(rec
)) {
2845 Operaddr
= be32_to_cpu(rec
->addr
);
2846 response
= sram_write(edge_serial
->serial
,
2849 be16_to_cpu(rec
->len
),
2852 dev_err(&edge_serial
->serial
->dev
->dev
,
2853 "sram_write failed (%x, %x, %d)\n",
2854 Operaddr
>> 16, Operaddr
& 0xFFFF,
2855 be16_to_cpu(rec
->len
));
2860 dev_dbg(dev
, "sending exec_dl_code\n");
2861 response
= usb_control_msg (edge_serial
->serial
->dev
,
2862 usb_sndctrlpipe(edge_serial
->serial
->dev
, 0),
2863 USB_REQUEST_ION_EXEC_DL_CODE
,
2864 0x40, 0x4000, 0x0001, NULL
, 0, 3000);
2866 release_firmware(fw
);
2870 /****************************************************************************
2872 ****************************************************************************/
2873 static int edge_startup(struct usb_serial
*serial
)
2875 struct edgeport_serial
*edge_serial
;
2876 struct usb_device
*dev
;
2877 struct device
*ddev
= &serial
->dev
->dev
;
2880 bool interrupt_in_found
;
2882 bool bulk_out_found
;
2883 static __u32 descriptor
[3] = { EDGE_COMPATIBILITY_MASK0
,
2884 EDGE_COMPATIBILITY_MASK1
,
2885 EDGE_COMPATIBILITY_MASK2
};
2889 /* create our private serial structure */
2890 edge_serial
= kzalloc(sizeof(struct edgeport_serial
), GFP_KERNEL
);
2891 if (edge_serial
== NULL
) {
2892 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __func__
);
2895 spin_lock_init(&edge_serial
->es_lock
);
2896 edge_serial
->serial
= serial
;
2897 usb_set_serial_data(serial
, edge_serial
);
2899 /* get the name for the device from the device */
2900 i
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
2901 &edge_serial
->name
[0], MAX_NAME_LEN
+1);
2904 edge_serial
->name
[i
++] = ' ';
2905 usb_string(dev
, dev
->descriptor
.iProduct
,
2906 &edge_serial
->name
[i
], MAX_NAME_LEN
+2 - i
);
2908 dev_info(&serial
->dev
->dev
, "%s detected\n", edge_serial
->name
);
2910 /* Read the epic descriptor */
2911 if (get_epic_descriptor(edge_serial
) <= 0) {
2912 /* memcpy descriptor to Supports structures */
2913 memcpy(&edge_serial
->epic_descriptor
.Supports
, descriptor
,
2914 sizeof(struct edge_compatibility_bits
));
2916 /* get the manufacturing descriptor for this device */
2917 get_manufacturing_desc(edge_serial
);
2919 /* get the boot descriptor */
2920 get_boot_desc(edge_serial
);
2922 get_product_info(edge_serial
);
2925 /* set the number of ports from the manufacturing description */
2926 /* serial->num_ports = serial->product_info.NumPorts; */
2927 if ((!edge_serial
->is_epic
) &&
2928 (edge_serial
->product_info
.NumPorts
!= serial
->num_ports
)) {
2930 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2931 edge_serial
->product_info
.NumPorts
,
2935 dev_dbg(ddev
, "%s - time 1 %ld\n", __func__
, jiffies
);
2937 /* If not an EPiC device */
2938 if (!edge_serial
->is_epic
) {
2939 /* now load the application firmware into this device */
2940 load_application_firmware(edge_serial
);
2942 dev_dbg(ddev
, "%s - time 2 %ld\n", __func__
, jiffies
);
2944 /* Check current Edgeport EEPROM and update if necessary */
2945 update_edgeport_E2PROM(edge_serial
);
2947 dev_dbg(ddev
, "%s - time 3 %ld\n", __func__
, jiffies
);
2949 /* set the configuration to use #1 */
2950 /* dev_dbg(ddev, "set_configuration 1\n"); */
2951 /* usb_set_configuration (dev, 1); */
2953 dev_dbg(ddev
, " FirmwareMajorVersion %d.%d.%d\n",
2954 edge_serial
->product_info
.FirmwareMajorVersion
,
2955 edge_serial
->product_info
.FirmwareMinorVersion
,
2956 le16_to_cpu(edge_serial
->product_info
.FirmwareBuildNumber
));
2958 /* we set up the pointers to the endpoints in the edge_open function,
2959 * as the structures aren't created yet. */
2963 if (edge_serial
->is_epic
) {
2964 /* EPIC thing, set up our interrupt polling now and our read
2965 * urb, so that the device knows it really is connected. */
2966 interrupt_in_found
= bulk_in_found
= bulk_out_found
= false;
2967 for (i
= 0; i
< serial
->interface
->altsetting
[0]
2968 .desc
.bNumEndpoints
; ++i
) {
2969 struct usb_endpoint_descriptor
*endpoint
;
2972 endpoint
= &serial
->interface
->altsetting
[0].
2974 buffer_size
= usb_endpoint_maxp(endpoint
);
2975 if (!interrupt_in_found
&&
2976 (usb_endpoint_is_int_in(endpoint
))) {
2977 /* we found a interrupt in endpoint */
2978 dev_dbg(ddev
, "found interrupt in\n");
2980 /* not set up yet, so do it now */
2981 edge_serial
->interrupt_read_urb
=
2982 usb_alloc_urb(0, GFP_KERNEL
);
2983 if (!edge_serial
->interrupt_read_urb
) {
2984 dev_err(ddev
, "out of memory\n");
2987 edge_serial
->interrupt_in_buffer
=
2988 kmalloc(buffer_size
, GFP_KERNEL
);
2989 if (!edge_serial
->interrupt_in_buffer
) {
2990 dev_err(ddev
, "out of memory\n");
2991 usb_free_urb(edge_serial
->interrupt_read_urb
);
2994 edge_serial
->interrupt_in_endpoint
=
2995 endpoint
->bEndpointAddress
;
2997 /* set up our interrupt urb */
2999 edge_serial
->interrupt_read_urb
,
3002 endpoint
->bEndpointAddress
),
3003 edge_serial
->interrupt_in_buffer
,
3005 edge_interrupt_callback
,
3007 endpoint
->bInterval
);
3009 interrupt_in_found
= true;
3012 if (!bulk_in_found
&&
3013 (usb_endpoint_is_bulk_in(endpoint
))) {
3014 /* we found a bulk in endpoint */
3015 dev_dbg(ddev
, "found bulk in\n");
3017 /* not set up yet, so do it now */
3018 edge_serial
->read_urb
=
3019 usb_alloc_urb(0, GFP_KERNEL
);
3020 if (!edge_serial
->read_urb
) {
3021 dev_err(ddev
, "out of memory\n");
3024 edge_serial
->bulk_in_buffer
=
3025 kmalloc(buffer_size
, GFP_KERNEL
);
3026 if (!edge_serial
->bulk_in_buffer
) {
3027 dev_err(&dev
->dev
, "out of memory\n");
3028 usb_free_urb(edge_serial
->read_urb
);
3031 edge_serial
->bulk_in_endpoint
=
3032 endpoint
->bEndpointAddress
;
3034 /* set up our bulk in urb */
3035 usb_fill_bulk_urb(edge_serial
->read_urb
, dev
,
3036 usb_rcvbulkpipe(dev
,
3037 endpoint
->bEndpointAddress
),
3038 edge_serial
->bulk_in_buffer
,
3039 usb_endpoint_maxp(endpoint
),
3040 edge_bulk_in_callback
,
3042 bulk_in_found
= true;
3045 if (!bulk_out_found
&&
3046 (usb_endpoint_is_bulk_out(endpoint
))) {
3047 /* we found a bulk out endpoint */
3048 dev_dbg(ddev
, "found bulk out\n");
3049 edge_serial
->bulk_out_endpoint
=
3050 endpoint
->bEndpointAddress
;
3051 bulk_out_found
= true;
3055 if (!interrupt_in_found
|| !bulk_in_found
|| !bulk_out_found
) {
3056 dev_err(ddev
, "Error - the proper endpoints were not found!\n");
3060 /* start interrupt read for this edgeport this interrupt will
3061 * continue as long as the edgeport is connected */
3062 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
,
3065 dev_err(ddev
, "%s - Error %d submitting control urb\n",
3066 __func__
, response
);
3072 /****************************************************************************
3074 * This function is called whenever the device is removed from the usb bus.
3075 ****************************************************************************/
3076 static void edge_disconnect(struct usb_serial
*serial
)
3078 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
3080 /* stop reads and writes on all ports */
3081 /* free up our endpoint stuff */
3082 if (edge_serial
->is_epic
) {
3083 usb_kill_urb(edge_serial
->interrupt_read_urb
);
3084 usb_free_urb(edge_serial
->interrupt_read_urb
);
3085 kfree(edge_serial
->interrupt_in_buffer
);
3087 usb_kill_urb(edge_serial
->read_urb
);
3088 usb_free_urb(edge_serial
->read_urb
);
3089 kfree(edge_serial
->bulk_in_buffer
);
3094 /****************************************************************************
3096 * This function is called when the device structure is deallocated.
3097 ****************************************************************************/
3098 static void edge_release(struct usb_serial
*serial
)
3100 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
3105 static int edge_port_probe(struct usb_serial_port
*port
)
3107 struct edgeport_port
*edge_port
;
3109 edge_port
= kzalloc(sizeof(*edge_port
), GFP_KERNEL
);
3113 spin_lock_init(&edge_port
->ep_lock
);
3114 edge_port
->port
= port
;
3116 usb_set_serial_port_data(port
, edge_port
);
3121 static int edge_port_remove(struct usb_serial_port
*port
)
3123 struct edgeport_port
*edge_port
;
3125 edge_port
= usb_get_serial_port_data(port
);
3131 module_usb_serial_driver(serial_drivers
, id_table_combined
);
3133 MODULE_AUTHOR(DRIVER_AUTHOR
);
3134 MODULE_DESCRIPTION(DRIVER_DESC
);
3135 MODULE_LICENSE("GPL");
3136 MODULE_FIRMWARE("edgeport/boot.fw");
3137 MODULE_FIRMWARE("edgeport/boot2.fw");
3138 MODULE_FIRMWARE("edgeport/down.fw");
3139 MODULE_FIRMWARE("edgeport/down2.fw");