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 <asm/uaccess.h>
46 #include <linux/usb.h>
47 #include <linux/usb/serial.h>
48 #include "io_edgeport.h"
49 #include "io_ionsp.h" /* info for the iosp messages */
50 #include "io_16654.h" /* 16654 UART defines */
55 #define DRIVER_VERSION "v2.7"
56 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
57 #define DRIVER_DESC "Edgeport USB Serial Driver"
59 /* First, the latest boot code - for first generation edgeports */
60 #define IMAGE_ARRAY_NAME BootCodeImage_GEN1
61 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
62 #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
64 /* for second generation edgeports */
65 #define IMAGE_ARRAY_NAME BootCodeImage_GEN2
66 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
67 #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
69 /* Then finally the main run-time operational code - for first generation edgeports */
70 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
71 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
72 #include "io_fw_down.h" /* Define array OperationalCodeImage[] */
74 /* for second generation edgeports */
75 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
76 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
77 #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
79 #define MAX_NAME_LEN 64
81 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
82 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
83 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
85 /* receive port state */
87 EXPECT_HDR1
= 0, /* Expect header byte 1 */
88 EXPECT_HDR2
= 1, /* Expect header byte 2 */
89 EXPECT_DATA
= 2, /* Expect 'RxBytesRemaining' data */
90 EXPECT_HDR3
= 3, /* Expect header byte 3 (for status hdrs only) */
95 * This Transmit queue is an extension of the edgeport Rx buffer.
96 * The maximum amount of data buffered in both the edgeport
97 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
100 unsigned int head
; /* index to head pointer (write) */
101 unsigned int tail
; /* index to tail pointer (read) */
102 unsigned int count
; /* Bytes in queue */
103 unsigned int size
; /* Max size of queue (equal to Max number of TxCredits) */
104 unsigned char *fifo
; /* allocated Buffer */
107 /* This structure holds all of the local port information */
108 struct edgeport_port
{
109 __u16 txCredits
; /* our current credits for this port */
110 __u16 maxTxCredits
; /* the max size of the port */
112 struct TxFifo txfifo
; /* transmit fifo -- size will be maxTxCredits */
113 struct urb
*write_urb
; /* write URB for this port */
114 bool write_in_progress
; /* 'true' while a write URB is outstanding */
117 __u8 shadowLCR
; /* last LCR value received */
118 __u8 shadowMCR
; /* last MCR value received */
119 __u8 shadowMSR
; /* last MSR value received */
120 __u8 shadowLSR
; /* last LSR value received */
121 __u8 shadowXonChar
; /* last value set as XON char in Edgeport */
122 __u8 shadowXoffChar
; /* last value set as XOFF char in Edgeport */
130 bool chaseResponsePending
;
132 wait_queue_head_t wait_chase
; /* for handling sleeping while waiting for chase to finish */
133 wait_queue_head_t wait_open
; /* for handling sleeping while waiting for open to finish */
134 wait_queue_head_t wait_command
; /* for handling sleeping while waiting for command to finish */
135 wait_queue_head_t delta_msr_wait
; /* for handling sleeping while waiting for msr change to happen */
137 struct async_icount icount
;
138 struct usb_serial_port
*port
; /* loop back to the owner of this object */
142 /* This structure holds all of the individual device information */
143 struct edgeport_serial
{
144 char name
[MAX_NAME_LEN
+2]; /* string name of this device */
146 struct edge_manuf_descriptor manuf_descriptor
; /* the manufacturer descriptor */
147 struct edge_boot_descriptor boot_descriptor
; /* the boot firmware descriptor */
148 struct edgeport_product_info product_info
; /* Product Info */
149 struct edge_compatibility_descriptor epic_descriptor
; /* Edgeport compatible descriptor */
150 int is_epic
; /* flag if EPiC device or not */
152 __u8 interrupt_in_endpoint
; /* the interrupt endpoint handle */
153 unsigned char * interrupt_in_buffer
; /* the buffer we use for the interrupt endpoint */
154 struct urb
* interrupt_read_urb
; /* our interrupt urb */
156 __u8 bulk_in_endpoint
; /* the bulk in endpoint handle */
157 unsigned char * bulk_in_buffer
; /* the buffer we use for the bulk in endpoint */
158 struct urb
* read_urb
; /* our bulk read urb */
159 bool read_in_progress
;
162 __u8 bulk_out_endpoint
; /* the bulk out endpoint handle */
164 __s16 rxBytesAvail
; /* the number of bytes that we need to read from this device */
166 enum RXSTATE rxState
; /* the current state of the bulk receive processor */
167 __u8 rxHeader1
; /* receive header byte 1 */
168 __u8 rxHeader2
; /* receive header byte 2 */
169 __u8 rxHeader3
; /* receive header byte 3 */
170 __u8 rxPort
; /* the port that we are currently receiving data for */
171 __u8 rxStatusCode
; /* the receive status code */
172 __u8 rxStatusParam
; /* the receive status paramater */
173 __s16 rxBytesRemaining
; /* the number of port bytes left to read */
174 struct usb_serial
*serial
; /* loop back to the owner of this object */
177 /* baud rate information */
178 struct divisor_table_entry
{
184 // Define table of divisors for Rev A EdgePort/4 hardware
185 // These assume a 3.6864MHz crystal, the standard /16, and
188 static const struct divisor_table_entry divisor_table
[] = {
191 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
192 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
210 /* local variables */
213 static int low_latency
= 1; /* tty low latency flag, on by default */
215 static atomic_t CmdUrbs
; /* Number of outstanding Command Write Urbs */
218 /* local function prototypes */
220 /* function prototypes for all URB callbacks */
221 static void edge_interrupt_callback (struct urb
*urb
);
222 static void edge_bulk_in_callback (struct urb
*urb
);
223 static void edge_bulk_out_data_callback (struct urb
*urb
);
224 static void edge_bulk_out_cmd_callback (struct urb
*urb
);
226 /* function prototypes for the usbserial callbacks */
227 static int edge_open (struct usb_serial_port
*port
, struct file
*filp
);
228 static void edge_close (struct usb_serial_port
*port
, struct file
*filp
);
229 static int edge_write (struct usb_serial_port
*port
, const unsigned char *buf
, int count
);
230 static int edge_write_room (struct usb_serial_port
*port
);
231 static int edge_chars_in_buffer (struct usb_serial_port
*port
);
232 static void edge_throttle (struct usb_serial_port
*port
);
233 static void edge_unthrottle (struct usb_serial_port
*port
);
234 static void edge_set_termios (struct usb_serial_port
*port
, struct ktermios
*old_termios
);
235 static int edge_ioctl (struct usb_serial_port
*port
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
236 static void edge_break (struct usb_serial_port
*port
, int break_state
);
237 static int edge_tiocmget (struct usb_serial_port
*port
, struct file
*file
);
238 static int edge_tiocmset (struct usb_serial_port
*port
, struct file
*file
, unsigned int set
, unsigned int clear
);
239 static int edge_startup (struct usb_serial
*serial
);
240 static void edge_shutdown (struct usb_serial
*serial
);
243 #include "io_tables.h" /* all of the devices that this driver supports */
245 /* function prototypes for all of our local functions */
246 static void process_rcvd_data (struct edgeport_serial
*edge_serial
, unsigned char *buffer
, __u16 bufferLength
);
247 static void process_rcvd_status (struct edgeport_serial
*edge_serial
, __u8 byte2
, __u8 byte3
);
248 static void edge_tty_recv (struct device
*dev
, struct tty_struct
*tty
, unsigned char *data
, int length
);
249 static void handle_new_msr (struct edgeport_port
*edge_port
, __u8 newMsr
);
250 static void handle_new_lsr (struct edgeport_port
*edge_port
, __u8 lsrData
, __u8 lsr
, __u8 data
);
251 static int send_iosp_ext_cmd (struct edgeport_port
*edge_port
, __u8 command
, __u8 param
);
252 static int calc_baud_rate_divisor (int baud_rate
, int *divisor
);
253 static int send_cmd_write_baud_rate (struct edgeport_port
*edge_port
, int baudRate
);
254 static void change_port_settings (struct edgeport_port
*edge_port
, struct ktermios
*old_termios
);
255 static int send_cmd_write_uart_register (struct edgeport_port
*edge_port
, __u8 regNum
, __u8 regValue
);
256 static int write_cmd_usb (struct edgeport_port
*edge_port
, unsigned char *buffer
, int writeLength
);
257 static void send_more_port_data (struct edgeport_serial
*edge_serial
, struct edgeport_port
*edge_port
);
259 static int sram_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
);
260 static int rom_read (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
);
261 static int rom_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
);
262 static void get_manufacturing_desc (struct edgeport_serial
*edge_serial
);
263 static void get_boot_desc (struct edgeport_serial
*edge_serial
);
264 static void load_application_firmware (struct edgeport_serial
*edge_serial
);
266 static void unicode_to_ascii(char *string
, int buflen
, __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
)
286 __u8 BootMajorVersion
;
287 __u8 BootMinorVersion
;
288 __le16 BootBuildNumber
;
291 struct edge_firmware_image_record
*record
;
292 unsigned char *firmware
;
296 switch (edge_serial
->product_info
.iDownloadFile
) {
297 case EDGE_DOWNLOAD_FILE_I930
:
298 BootMajorVersion
= BootCodeImageVersion_GEN1
.MajorVersion
;
299 BootMinorVersion
= BootCodeImageVersion_GEN1
.MinorVersion
;
300 BootBuildNumber
= cpu_to_le16(BootCodeImageVersion_GEN1
.BuildNumber
);
301 BootImage
= &BootCodeImage_GEN1
[0];
302 BootSize
= sizeof( BootCodeImage_GEN1
);
305 case EDGE_DOWNLOAD_FILE_80251
:
306 BootMajorVersion
= BootCodeImageVersion_GEN2
.MajorVersion
;
307 BootMinorVersion
= BootCodeImageVersion_GEN2
.MinorVersion
;
308 BootBuildNumber
= cpu_to_le16(BootCodeImageVersion_GEN2
.BuildNumber
);
309 BootImage
= &BootCodeImage_GEN2
[0];
310 BootSize
= sizeof( BootCodeImage_GEN2
);
317 // Check Boot Image Version
318 BootCurVer
= (edge_serial
->boot_descriptor
.MajorVersion
<< 24) +
319 (edge_serial
->boot_descriptor
.MinorVersion
<< 16) +
320 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
);
322 BootNewVer
= (BootMajorVersion
<< 24) +
323 (BootMinorVersion
<< 16) +
324 le16_to_cpu(BootBuildNumber
);
326 dbg("Current Boot Image version %d.%d.%d",
327 edge_serial
->boot_descriptor
.MajorVersion
,
328 edge_serial
->boot_descriptor
.MinorVersion
,
329 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
332 if (BootNewVer
> BootCurVer
) {
333 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
334 edge_serial
->boot_descriptor
.MajorVersion
,
335 edge_serial
->boot_descriptor
.MinorVersion
,
336 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
),
339 le16_to_cpu(BootBuildNumber
));
342 dbg("Downloading new Boot Image");
344 firmware
= BootImage
;
347 record
= (struct edge_firmware_image_record
*)firmware
;
348 response
= rom_write (edge_serial
->serial
, le16_to_cpu(record
->ExtAddr
), le16_to_cpu(record
->Addr
), le16_to_cpu(record
->Len
), &record
->Data
[0]);
350 dev_err(&edge_serial
->serial
->dev
->dev
, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record
->ExtAddr
), le16_to_cpu(record
->Addr
), le16_to_cpu(record
->Len
));
353 firmware
+= sizeof (struct edge_firmware_image_record
) + le16_to_cpu(record
->Len
);
354 if (firmware
>= &BootImage
[BootSize
]) {
359 dbg("Boot Image -- already up to date");
364 /************************************************************************
366 * Get string descriptor from device *
368 ************************************************************************/
369 static int get_string (struct usb_device
*dev
, int Id
, char *string
, int buflen
)
371 struct usb_string_descriptor StringDesc
;
372 struct usb_string_descriptor
*pStringDesc
;
374 dbg("%s - USB String ID = %d", __FUNCTION__
, Id
);
376 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
, sizeof(StringDesc
))) {
380 pStringDesc
= kmalloc (StringDesc
.bLength
, GFP_KERNEL
);
386 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
, StringDesc
.bLength
)) {
391 unicode_to_ascii(string
, buflen
, pStringDesc
->wData
, pStringDesc
->bLength
/2);
394 dbg("%s - USB String %s", __FUNCTION__
, string
);
395 return strlen(string
);
400 /************************************************************************
402 * Get string descriptor from device
404 ************************************************************************/
405 static int get_string_desc (struct usb_device
*dev
, int Id
, struct usb_string_descriptor
**pRetDesc
)
407 struct usb_string_descriptor StringDesc
;
408 struct usb_string_descriptor
*pStringDesc
;
410 dbg("%s - USB String ID = %d", __FUNCTION__
, Id
);
412 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
, sizeof(StringDesc
))) {
416 pStringDesc
= kmalloc (StringDesc
.bLength
, GFP_KERNEL
);
422 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
, StringDesc
.bLength
)) {
427 *pRetDesc
= pStringDesc
;
432 static void dump_product_info(struct edgeport_product_info
*product_info
)
434 // Dump Product Info structure
435 dbg("**Product Information:");
436 dbg(" ProductId %x", product_info
->ProductId
);
437 dbg(" NumPorts %d", product_info
->NumPorts
);
438 dbg(" ProdInfoVer %d", product_info
->ProdInfoVer
);
439 dbg(" IsServer %d", product_info
->IsServer
);
440 dbg(" IsRS232 %d", product_info
->IsRS232
);
441 dbg(" IsRS422 %d", product_info
->IsRS422
);
442 dbg(" IsRS485 %d", product_info
->IsRS485
);
443 dbg(" RomSize %d", product_info
->RomSize
);
444 dbg(" RamSize %d", product_info
->RamSize
);
445 dbg(" CpuRev %x", product_info
->CpuRev
);
446 dbg(" BoardRev %x", product_info
->BoardRev
);
447 dbg(" BootMajorVersion %d.%d.%d", product_info
->BootMajorVersion
,
448 product_info
->BootMinorVersion
,
449 le16_to_cpu(product_info
->BootBuildNumber
));
450 dbg(" FirmwareMajorVersion %d.%d.%d", product_info
->FirmwareMajorVersion
,
451 product_info
->FirmwareMinorVersion
,
452 le16_to_cpu(product_info
->FirmwareBuildNumber
));
453 dbg(" ManufactureDescDate %d/%d/%d", product_info
->ManufactureDescDate
[0],
454 product_info
->ManufactureDescDate
[1],
455 product_info
->ManufactureDescDate
[2]+1900);
456 dbg(" iDownloadFile 0x%x", product_info
->iDownloadFile
);
457 dbg(" EpicVer %d", product_info
->EpicVer
);
460 static void get_product_info(struct edgeport_serial
*edge_serial
)
462 struct edgeport_product_info
*product_info
= &edge_serial
->product_info
;
464 memset (product_info
, 0, sizeof(struct edgeport_product_info
));
466 product_info
->ProductId
= (__u16
)(le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ~ION_DEVICE_ID_80251_NETCHIP
);
467 product_info
->NumPorts
= edge_serial
->manuf_descriptor
.NumPorts
;
468 product_info
->ProdInfoVer
= 0;
470 product_info
->RomSize
= edge_serial
->manuf_descriptor
.RomSize
;
471 product_info
->RamSize
= edge_serial
->manuf_descriptor
.RamSize
;
472 product_info
->CpuRev
= edge_serial
->manuf_descriptor
.CpuRev
;
473 product_info
->BoardRev
= edge_serial
->manuf_descriptor
.BoardRev
;
475 product_info
->BootMajorVersion
= edge_serial
->boot_descriptor
.MajorVersion
;
476 product_info
->BootMinorVersion
= edge_serial
->boot_descriptor
.MinorVersion
;
477 product_info
->BootBuildNumber
= edge_serial
->boot_descriptor
.BuildNumber
;
479 memcpy(product_info
->ManufactureDescDate
, edge_serial
->manuf_descriptor
.DescDate
, sizeof(edge_serial
->manuf_descriptor
.DescDate
));
481 // check if this is 2nd generation hardware
482 if (le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ION_DEVICE_ID_80251_NETCHIP
) {
483 product_info
->FirmwareMajorVersion
= OperationalCodeImageVersion_GEN2
.MajorVersion
;
484 product_info
->FirmwareMinorVersion
= OperationalCodeImageVersion_GEN2
.MinorVersion
;
485 product_info
->FirmwareBuildNumber
= cpu_to_le16(OperationalCodeImageVersion_GEN2
.BuildNumber
);
486 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_80251
;
488 product_info
->FirmwareMajorVersion
= OperationalCodeImageVersion_GEN1
.MajorVersion
;
489 product_info
->FirmwareMinorVersion
= OperationalCodeImageVersion_GEN1
.MinorVersion
;
490 product_info
->FirmwareBuildNumber
= cpu_to_le16(OperationalCodeImageVersion_GEN1
.BuildNumber
);
491 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_I930
;
494 // Determine Product type and set appropriate flags
495 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info
->ProductId
)) {
496 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE
:
497 case ION_DEVICE_ID_EDGEPORT_4T
:
498 case ION_DEVICE_ID_EDGEPORT_4
:
499 case ION_DEVICE_ID_EDGEPORT_2
:
500 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU
:
501 case ION_DEVICE_ID_EDGEPORT_8
:
502 case ION_DEVICE_ID_EDGEPORT_421
:
503 case ION_DEVICE_ID_EDGEPORT_21
:
504 case ION_DEVICE_ID_EDGEPORT_2_DIN
:
505 case ION_DEVICE_ID_EDGEPORT_4_DIN
:
506 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU
:
507 product_info
->IsRS232
= 1;
510 case ION_DEVICE_ID_EDGEPORT_2I
: // Edgeport/2 RS422/RS485
511 product_info
->IsRS422
= 1;
512 product_info
->IsRS485
= 1;
515 case ION_DEVICE_ID_EDGEPORT_8I
: // Edgeport/4 RS422
516 case ION_DEVICE_ID_EDGEPORT_4I
: // Edgeport/4 RS422
517 product_info
->IsRS422
= 1;
521 dump_product_info(product_info
);
524 static int get_epic_descriptor(struct edgeport_serial
*ep
)
527 struct usb_serial
*serial
= ep
->serial
;
528 struct edgeport_product_info
*product_info
= &ep
->product_info
;
529 struct edge_compatibility_descriptor
*epic
= &ep
->epic_descriptor
;
530 struct edge_compatibility_bits
*bits
;
533 result
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
534 USB_REQUEST_ION_GET_EPIC_DESC
,
536 &ep
->epic_descriptor
,
537 sizeof(struct edge_compatibility_descriptor
),
540 dbg("%s result = %d", __FUNCTION__
, result
);
544 memset(product_info
, 0, sizeof(struct edgeport_product_info
));
546 product_info
->NumPorts
= epic
->NumPorts
;
547 product_info
->ProdInfoVer
= 0;
548 product_info
->FirmwareMajorVersion
= epic
->MajorVersion
;
549 product_info
->FirmwareMinorVersion
= epic
->MinorVersion
;
550 product_info
->FirmwareBuildNumber
= epic
->BuildNumber
;
551 product_info
->iDownloadFile
= epic
->iDownloadFile
;
552 product_info
->EpicVer
= epic
->EpicVer
;
553 product_info
->Epic
= epic
->Supports
;
554 product_info
->ProductId
= ION_DEVICE_ID_EDGEPORT_COMPATIBLE
;
555 dump_product_info(product_info
);
557 bits
= &ep
->epic_descriptor
.Supports
;
558 dbg("**EPIC descriptor:");
559 dbg(" VendEnableSuspend: %s", bits
->VendEnableSuspend
? "TRUE": "FALSE");
560 dbg(" IOSPOpen : %s", bits
->IOSPOpen
? "TRUE": "FALSE" );
561 dbg(" IOSPClose : %s", bits
->IOSPClose
? "TRUE": "FALSE" );
562 dbg(" IOSPChase : %s", bits
->IOSPChase
? "TRUE": "FALSE" );
563 dbg(" IOSPSetRxFlow : %s", bits
->IOSPSetRxFlow
? "TRUE": "FALSE" );
564 dbg(" IOSPSetTxFlow : %s", bits
->IOSPSetTxFlow
? "TRUE": "FALSE" );
565 dbg(" IOSPSetXChar : %s", bits
->IOSPSetXChar
? "TRUE": "FALSE" );
566 dbg(" IOSPRxCheck : %s", bits
->IOSPRxCheck
? "TRUE": "FALSE" );
567 dbg(" IOSPSetClrBreak : %s", bits
->IOSPSetClrBreak
? "TRUE": "FALSE" );
568 dbg(" IOSPWriteMCR : %s", bits
->IOSPWriteMCR
? "TRUE": "FALSE" );
569 dbg(" IOSPWriteLCR : %s", bits
->IOSPWriteLCR
? "TRUE": "FALSE" );
570 dbg(" IOSPSetBaudRate : %s", bits
->IOSPSetBaudRate
? "TRUE": "FALSE" );
571 dbg(" TrueEdgeport : %s", bits
->TrueEdgeport
? "TRUE": "FALSE" );
578 /************************************************************************/
579 /************************************************************************/
580 /* U S B C A L L B A C K F U N C T I O N S */
581 /* U S B C A L L B A C K F U N C T I O N S */
582 /************************************************************************/
583 /************************************************************************/
585 /*****************************************************************************
586 * edge_interrupt_callback
587 * this is the callback function for when we have received data on the
588 * interrupt endpoint.
589 *****************************************************************************/
590 static void edge_interrupt_callback (struct urb
*urb
)
592 struct edgeport_serial
*edge_serial
= (struct edgeport_serial
*)urb
->context
;
593 struct edgeport_port
*edge_port
;
594 struct usb_serial_port
*port
;
595 unsigned char *data
= urb
->transfer_buffer
;
596 int length
= urb
->actual_length
;
602 int status
= urb
->status
;
604 dbg("%s", __FUNCTION__
);
613 /* this urb is terminated, clean up */
614 dbg("%s - urb shutting down with status: %d",
615 __FUNCTION__
, status
);
618 dbg("%s - nonzero urb status received: %d",
619 __FUNCTION__
, status
);
623 // process this interrupt-read even if there are no ports open
625 usb_serial_debug_data(debug
, &edge_serial
->serial
->dev
->dev
, __FUNCTION__
, length
, data
);
628 bytes_avail
= data
[0] | (data
[1] << 8);
630 spin_lock(&edge_serial
->es_lock
);
631 edge_serial
->rxBytesAvail
+= bytes_avail
;
632 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__
, bytes_avail
, edge_serial
->rxBytesAvail
, edge_serial
->read_in_progress
);
634 if (edge_serial
->rxBytesAvail
> 0 &&
635 !edge_serial
->read_in_progress
) {
636 dbg("%s - posting a read", __FUNCTION__
);
637 edge_serial
->read_in_progress
= true;
639 /* we have pending bytes on the bulk in pipe, send a request */
640 edge_serial
->read_urb
->dev
= edge_serial
->serial
->dev
;
641 result
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
643 dev_err(&edge_serial
->serial
->dev
->dev
, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__
, result
);
644 edge_serial
->read_in_progress
= false;
647 spin_unlock(&edge_serial
->es_lock
);
650 /* grab the txcredits for the ports if available */
653 while ((position
< length
) && (portNumber
< edge_serial
->serial
->num_ports
)) {
654 txCredits
= data
[position
] | (data
[position
+1] << 8);
656 port
= edge_serial
->serial
->port
[portNumber
];
657 edge_port
= usb_get_serial_port_data(port
);
658 if (edge_port
->open
) {
659 spin_lock(&edge_port
->ep_lock
);
660 edge_port
->txCredits
+= txCredits
;
661 spin_unlock(&edge_port
->ep_lock
);
662 dbg("%s - txcredits for port%d = %d", __FUNCTION__
, portNumber
, edge_port
->txCredits
);
664 /* tell the tty driver that something has changed */
665 if (edge_port
->port
->tty
)
666 tty_wakeup(edge_port
->port
->tty
);
668 // Since we have more credit, check if more data can be sent
669 send_more_port_data(edge_serial
, edge_port
);
678 result
= usb_submit_urb (urb
, GFP_ATOMIC
);
680 dev_err(&urb
->dev
->dev
, "%s - Error %d submitting control urb\n", __FUNCTION__
, result
);
685 /*****************************************************************************
686 * edge_bulk_in_callback
687 * this is the callback function for when we have received data on the
689 *****************************************************************************/
690 static void edge_bulk_in_callback (struct urb
*urb
)
692 struct edgeport_serial
*edge_serial
= (struct edgeport_serial
*)urb
->context
;
693 unsigned char *data
= urb
->transfer_buffer
;
695 __u16 raw_data_length
;
696 int status
= urb
->status
;
698 dbg("%s", __FUNCTION__
);
701 dbg("%s - nonzero read bulk status received: %d",
702 __FUNCTION__
, status
);
703 edge_serial
->read_in_progress
= false;
707 if (urb
->actual_length
== 0) {
708 dbg("%s - read bulk callback with no data", __FUNCTION__
);
709 edge_serial
->read_in_progress
= false;
713 raw_data_length
= urb
->actual_length
;
715 usb_serial_debug_data(debug
, &edge_serial
->serial
->dev
->dev
, __FUNCTION__
, raw_data_length
, data
);
717 spin_lock(&edge_serial
->es_lock
);
719 /* decrement our rxBytes available by the number that we just got */
720 edge_serial
->rxBytesAvail
-= raw_data_length
;
722 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__
, raw_data_length
, edge_serial
->rxBytesAvail
);
724 process_rcvd_data (edge_serial
, data
, urb
->actual_length
);
726 /* check to see if there's any more data for us to read */
727 if (edge_serial
->rxBytesAvail
> 0) {
728 dbg("%s - posting a read", __FUNCTION__
);
729 edge_serial
->read_urb
->dev
= edge_serial
->serial
->dev
;
730 retval
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
732 dev_err(&urb
->dev
->dev
,
733 "%s - usb_submit_urb(read bulk) failed, "
734 "retval = %d\n", __FUNCTION__
, retval
);
735 edge_serial
->read_in_progress
= false;
738 edge_serial
->read_in_progress
= false;
741 spin_unlock(&edge_serial
->es_lock
);
745 /*****************************************************************************
746 * edge_bulk_out_data_callback
747 * this is the callback function for when we have finished sending serial data
748 * on the bulk out endpoint.
749 *****************************************************************************/
750 static void edge_bulk_out_data_callback (struct urb
*urb
)
752 struct edgeport_port
*edge_port
= (struct edgeport_port
*)urb
->context
;
753 struct tty_struct
*tty
;
754 int status
= urb
->status
;
756 dbg("%s", __FUNCTION__
);
759 dbg("%s - nonzero write bulk status received: %d",
760 __FUNCTION__
, status
);
763 tty
= edge_port
->port
->tty
;
765 if (tty
&& edge_port
->open
) {
766 /* let the tty driver wakeup if it has a special write_wakeup function */
770 // Release the Write URB
771 edge_port
->write_in_progress
= false;
773 // Check if more data needs to be sent
774 send_more_port_data((struct edgeport_serial
*)(usb_get_serial_data(edge_port
->port
->serial
)), edge_port
);
778 /*****************************************************************************
780 * this is the callback function for when we have finished sending a command
781 * on the bulk out endpoint.
782 *****************************************************************************/
783 static void edge_bulk_out_cmd_callback (struct urb
*urb
)
785 struct edgeport_port
*edge_port
= (struct edgeport_port
*)urb
->context
;
786 struct tty_struct
*tty
;
787 int status
= urb
->status
;
789 dbg("%s", __FUNCTION__
);
791 atomic_dec(&CmdUrbs
);
792 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__
, urb
, atomic_read(&CmdUrbs
));
795 /* clean up the transfer buffer */
796 kfree(urb
->transfer_buffer
);
798 /* Free the command urb */
802 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__
, status
);
806 /* Get pointer to tty */
807 tty
= edge_port
->port
->tty
;
809 /* tell the tty driver that something has changed */
810 if (tty
&& edge_port
->open
)
813 /* we have completed the command */
814 edge_port
->commandPending
= false;
815 wake_up(&edge_port
->wait_command
);
819 /*****************************************************************************
820 * Driver tty interface functions
821 *****************************************************************************/
823 /*****************************************************************************
825 * this function is called by the tty driver when a port is opened
826 * If successful, we return 0
827 * Otherwise we return a negative error number.
828 *****************************************************************************/
829 static int edge_open (struct usb_serial_port
*port
, struct file
* filp
)
831 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
832 struct usb_serial
*serial
;
833 struct edgeport_serial
*edge_serial
;
836 dbg("%s - port %d", __FUNCTION__
, port
->number
);
838 if (edge_port
== NULL
)
842 port
->tty
->low_latency
= low_latency
;
844 /* see if we've set up our endpoint info yet (can't set it up in edge_startup
845 as the structures were not set up at that time.) */
846 serial
= port
->serial
;
847 edge_serial
= usb_get_serial_data(serial
);
848 if (edge_serial
== NULL
) {
851 if (edge_serial
->interrupt_in_buffer
== NULL
) {
852 struct usb_serial_port
*port0
= serial
->port
[0];
854 /* not set up yet, so do it now */
855 edge_serial
->interrupt_in_buffer
= port0
->interrupt_in_buffer
;
856 edge_serial
->interrupt_in_endpoint
= port0
->interrupt_in_endpointAddress
;
857 edge_serial
->interrupt_read_urb
= port0
->interrupt_in_urb
;
858 edge_serial
->bulk_in_buffer
= port0
->bulk_in_buffer
;
859 edge_serial
->bulk_in_endpoint
= port0
->bulk_in_endpointAddress
;
860 edge_serial
->read_urb
= port0
->read_urb
;
861 edge_serial
->bulk_out_endpoint
= port0
->bulk_out_endpointAddress
;
863 /* set up our interrupt urb */
864 usb_fill_int_urb(edge_serial
->interrupt_read_urb
,
866 usb_rcvintpipe(serial
->dev
,
867 port0
->interrupt_in_endpointAddress
),
868 port0
->interrupt_in_buffer
,
869 edge_serial
->interrupt_read_urb
->transfer_buffer_length
,
870 edge_interrupt_callback
, edge_serial
,
871 edge_serial
->interrupt_read_urb
->interval
);
873 /* set up our bulk in urb */
874 usb_fill_bulk_urb(edge_serial
->read_urb
, serial
->dev
,
875 usb_rcvbulkpipe(serial
->dev
,
876 port0
->bulk_in_endpointAddress
),
877 port0
->bulk_in_buffer
,
878 edge_serial
->read_urb
->transfer_buffer_length
,
879 edge_bulk_in_callback
, edge_serial
);
880 edge_serial
->read_in_progress
= false;
882 /* start interrupt read for this edgeport
883 * this interrupt will continue as long as the edgeport is connected */
884 response
= usb_submit_urb (edge_serial
->interrupt_read_urb
, GFP_KERNEL
);
886 dev_err(&port
->dev
, "%s - Error %d submitting control urb\n", __FUNCTION__
, response
);
890 /* initialize our wait queues */
891 init_waitqueue_head(&edge_port
->wait_open
);
892 init_waitqueue_head(&edge_port
->wait_chase
);
893 init_waitqueue_head(&edge_port
->delta_msr_wait
);
894 init_waitqueue_head(&edge_port
->wait_command
);
896 /* initialize our icount structure */
897 memset (&(edge_port
->icount
), 0x00, sizeof(edge_port
->icount
));
899 /* initialize our port settings */
900 edge_port
->txCredits
= 0; /* Can't send any data yet */
901 edge_port
->shadowMCR
= MCR_MASTER_IE
; /* Must always set this bit to enable ints! */
902 edge_port
->chaseResponsePending
= false;
904 /* send a open port command */
905 edge_port
->openPending
= true;
906 edge_port
->open
= false;
907 response
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_OPEN_PORT
, 0);
910 dev_err(&port
->dev
, "%s - error sending open port command\n", __FUNCTION__
);
911 edge_port
->openPending
= false;
915 /* now wait for the port to be completely opened */
916 wait_event_timeout(edge_port
->wait_open
, !edge_port
->openPending
, OPEN_TIMEOUT
);
918 if (!edge_port
->open
) {
920 dbg("%s - open timedout", __FUNCTION__
);
921 edge_port
->openPending
= false;
925 /* create the txfifo */
926 edge_port
->txfifo
.head
= 0;
927 edge_port
->txfifo
.tail
= 0;
928 edge_port
->txfifo
.count
= 0;
929 edge_port
->txfifo
.size
= edge_port
->maxTxCredits
;
930 edge_port
->txfifo
.fifo
= kmalloc (edge_port
->maxTxCredits
, GFP_KERNEL
);
932 if (!edge_port
->txfifo
.fifo
) {
933 dbg("%s - no memory", __FUNCTION__
);
934 edge_close (port
, filp
);
938 /* Allocate a URB for the write */
939 edge_port
->write_urb
= usb_alloc_urb (0, GFP_KERNEL
);
940 edge_port
->write_in_progress
= false;
942 if (!edge_port
->write_urb
) {
943 dbg("%s - no memory", __FUNCTION__
);
944 edge_close (port
, filp
);
948 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__
, port
->number
, edge_port
->maxTxCredits
);
950 dbg("%s exited", __FUNCTION__
);
956 /************************************************************************
958 * block_until_chase_response
960 * This function will block the close until one of the following:
961 * 1. Response to our Chase comes from Edgeport
962 * 2. A timout of 10 seconds without activity has expired
963 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
965 ************************************************************************/
966 static void block_until_chase_response(struct edgeport_port
*edge_port
)
975 lastCredits
= edge_port
->txCredits
;
977 // Did we get our Chase response
978 if (!edge_port
->chaseResponsePending
) {
979 dbg("%s - Got Chase Response", __FUNCTION__
);
981 // did we get all of our credit back?
982 if (edge_port
->txCredits
== edge_port
->maxTxCredits
) {
983 dbg("%s - Got all credits", __FUNCTION__
);
988 // Block the thread for a while
989 prepare_to_wait(&edge_port
->wait_chase
, &wait
, TASK_UNINTERRUPTIBLE
);
990 schedule_timeout(timeout
);
991 finish_wait(&edge_port
->wait_chase
, &wait
);
993 if (lastCredits
== edge_port
->txCredits
) {
994 // No activity.. count down.
997 edge_port
->chaseResponsePending
= false;
998 dbg("%s - Chase TIMEOUT", __FUNCTION__
);
1002 // Reset timout value back to 10 seconds
1003 dbg("%s - Last %d, Current %d", __FUNCTION__
, lastCredits
, edge_port
->txCredits
);
1010 /************************************************************************
1012 * block_until_tx_empty
1014 * This function will block the close until one of the following:
1016 * 2. The edgeport has stopped
1017 * 3. A timout of 3 seconds without activity has expired
1019 ************************************************************************/
1020 static void block_until_tx_empty (struct edgeport_port
*edge_port
)
1023 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1025 int timeout
= HZ
/10;
1030 lastCount
= fifo
->count
;
1032 // Is the Edgeport Buffer empty?
1033 if (lastCount
== 0) {
1034 dbg("%s - TX Buffer Empty", __FUNCTION__
);
1038 // Block the thread for a while
1039 prepare_to_wait (&edge_port
->wait_chase
, &wait
, TASK_UNINTERRUPTIBLE
);
1040 schedule_timeout(timeout
);
1041 finish_wait(&edge_port
->wait_chase
, &wait
);
1043 dbg("%s wait", __FUNCTION__
);
1045 if (lastCount
== fifo
->count
) {
1046 // No activity.. count down.
1049 dbg("%s - TIMEOUT", __FUNCTION__
);
1053 // Reset timout 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
, struct file
* filp
)
1066 struct edgeport_serial
*edge_serial
;
1067 struct edgeport_port
*edge_port
;
1070 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1072 edge_serial
= usb_get_serial_data(port
->serial
);
1073 edge_port
= usb_get_serial_port_data(port
);
1074 if ((edge_serial
== NULL
) || (edge_port
== NULL
))
1077 // block until tx is empty
1078 block_until_tx_empty(edge_port
);
1080 edge_port
->closePending
= true;
1082 if ((!edge_serial
->is_epic
) ||
1083 ((edge_serial
->is_epic
) &&
1084 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1085 /* flush and chase */
1086 edge_port
->chaseResponsePending
= true;
1088 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__
);
1089 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1091 // block until chase finished
1092 block_until_chase_response(edge_port
);
1094 edge_port
->chaseResponsePending
= false;
1098 if ((!edge_serial
->is_epic
) ||
1099 ((edge_serial
->is_epic
) &&
1100 (edge_serial
->epic_descriptor
.Supports
.IOSPClose
))) {
1101 /* close the port */
1102 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__
);
1103 send_iosp_ext_cmd (edge_port
, IOSP_CMD_CLOSE_PORT
, 0);
1106 //port->close = true;
1107 edge_port
->closePending
= false;
1108 edge_port
->open
= false;
1109 edge_port
->openPending
= false;
1111 usb_kill_urb(edge_port
->write_urb
);
1113 if (edge_port
->write_urb
) {
1114 /* if this urb had a transfer buffer already (old transfer) free it */
1115 kfree(edge_port
->write_urb
->transfer_buffer
);
1116 usb_free_urb(edge_port
->write_urb
);
1117 edge_port
->write_urb
= NULL
;
1119 kfree(edge_port
->txfifo
.fifo
);
1120 edge_port
->txfifo
.fifo
= NULL
;
1122 dbg("%s exited", __FUNCTION__
);
1125 /*****************************************************************************
1127 * this function is called by the tty driver when data should be written to
1129 * If successful, we return the number of bytes written, otherwise we return
1130 * a negative error number.
1131 *****************************************************************************/
1132 static int edge_write (struct usb_serial_port
*port
, const unsigned char *data
, int count
)
1134 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1135 struct TxFifo
*fifo
;
1140 unsigned long flags
;
1142 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1144 if (edge_port
== NULL
)
1147 // get a pointer to the Tx fifo
1148 fifo
= &edge_port
->txfifo
;
1150 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1152 // calculate number of bytes to put in fifo
1153 copySize
= min ((unsigned int)count
, (edge_port
->txCredits
- fifo
->count
));
1155 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__
,
1156 port
->number
, count
, edge_port
->txCredits
- fifo
->count
, copySize
);
1158 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1159 if (copySize
== 0) {
1160 dbg("%s - copySize = Zero", __FUNCTION__
);
1165 // since we can never overflow the buffer we do not have to check for full condition
1167 // the copy is done is two parts -- first fill to the end of the buffer
1168 // then copy the reset from the start of the buffer
1170 bytesleft
= fifo
->size
- fifo
->head
;
1171 firsthalf
= min (bytesleft
, copySize
);
1172 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__
, firsthalf
, bytesleft
);
1174 /* now copy our data */
1175 memcpy(&fifo
->fifo
[fifo
->head
], data
, firsthalf
);
1176 usb_serial_debug_data(debug
, &port
->dev
, __FUNCTION__
, firsthalf
, &fifo
->fifo
[fifo
->head
]);
1178 // update the index and size
1179 fifo
->head
+= firsthalf
;
1180 fifo
->count
+= firsthalf
;
1183 if (fifo
->head
== fifo
->size
) {
1187 secondhalf
= copySize
-firsthalf
;
1190 dbg("%s - copy rest of data %d", __FUNCTION__
, secondhalf
);
1191 memcpy(&fifo
->fifo
[fifo
->head
], &data
[firsthalf
], secondhalf
);
1192 usb_serial_debug_data(debug
, &port
->dev
, __FUNCTION__
, secondhalf
, &fifo
->fifo
[fifo
->head
]);
1193 // update the index and size
1194 fifo
->count
+= secondhalf
;
1195 fifo
->head
+= secondhalf
;
1196 // No need to check for wrap since we can not get to end of fifo in this part
1200 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1202 send_more_port_data((struct edgeport_serial
*)usb_get_serial_data(port
->serial
), edge_port
);
1204 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__
, copySize
, edge_port
->txCredits
, fifo
->count
);
1210 /************************************************************************
1212 * send_more_port_data()
1214 * This routine attempts to write additional UART transmit data
1215 * to a port over the USB bulk pipe. It is called (1) when new
1216 * data has been written to a port's TxBuffer from higher layers
1217 * (2) when the peripheral sends us additional TxCredits indicating
1218 * that it can accept more Tx data for a given port; and (3) when
1219 * a bulk write completes successfully and we want to see if we
1220 * can transmit more.
1222 ************************************************************************/
1223 static void send_more_port_data(struct edgeport_serial
*edge_serial
, struct edgeport_port
*edge_port
)
1225 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1227 unsigned char *buffer
;
1233 unsigned long flags
;
1235 dbg("%s(%d)", __FUNCTION__
, edge_port
->port
->number
);
1237 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1239 if (edge_port
->write_in_progress
||
1241 (fifo
->count
== 0)) {
1242 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__
, edge_port
->port
->number
, fifo
->count
, edge_port
->write_in_progress
);
1246 // since the amount of data in the fifo will always fit into the
1247 // edgeport buffer we do not need to check the write length
1249 // Do we have enough credits for this port to make it worthwhile
1250 // to bother queueing a write. If it's too small, say a few bytes,
1251 // it's better to wait for more credits so we can do a larger
1253 if (edge_port
->txCredits
< EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port
->maxTxCredits
,EDGE_FW_BULK_MAX_PACKET_SIZE
)) {
1254 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__
, edge_port
->port
->number
, fifo
->count
, edge_port
->txCredits
);
1259 edge_port
->write_in_progress
= true;
1261 // get a pointer to the write_urb
1262 urb
= edge_port
->write_urb
;
1264 /* make sure transfer buffer is freed */
1265 kfree(urb
->transfer_buffer
);
1266 urb
->transfer_buffer
= NULL
;
1268 /* build the data header for the buffer and port that we are about to send out */
1269 count
= fifo
->count
;
1270 buffer
= kmalloc (count
+2, GFP_ATOMIC
);
1271 if (buffer
== NULL
) {
1272 dev_err(&edge_port
->port
->dev
, "%s - no more kernel memory...\n", __FUNCTION__
);
1273 edge_port
->write_in_progress
= false;
1276 buffer
[0] = IOSP_BUILD_DATA_HDR1 (edge_port
->port
->number
- edge_port
->port
->serial
->minor
, count
);
1277 buffer
[1] = IOSP_BUILD_DATA_HDR2 (edge_port
->port
->number
- edge_port
->port
->serial
->minor
, count
);
1279 /* now copy our data */
1280 bytesleft
= fifo
->size
- fifo
->tail
;
1281 firsthalf
= min (bytesleft
, count
);
1282 memcpy(&buffer
[2], &fifo
->fifo
[fifo
->tail
], firsthalf
);
1283 fifo
->tail
+= firsthalf
;
1284 fifo
->count
-= firsthalf
;
1285 if (fifo
->tail
== fifo
->size
) {
1289 secondhalf
= count
-firsthalf
;
1291 memcpy(&buffer
[2+firsthalf
], &fifo
->fifo
[fifo
->tail
], secondhalf
);
1292 fifo
->tail
+= secondhalf
;
1293 fifo
->count
-= secondhalf
;
1297 usb_serial_debug_data(debug
, &edge_port
->port
->dev
, __FUNCTION__
, count
, &buffer
[2]);
1299 /* fill up the urb with all of our data and submit it */
1300 usb_fill_bulk_urb (urb
, edge_serial
->serial
->dev
,
1301 usb_sndbulkpipe(edge_serial
->serial
->dev
, edge_serial
->bulk_out_endpoint
),
1302 buffer
, count
+2, edge_bulk_out_data_callback
, edge_port
);
1304 /* decrement the number of credits we have by the number we just sent */
1305 edge_port
->txCredits
-= count
;
1306 edge_port
->icount
.tx
+= count
;
1308 urb
->dev
= edge_serial
->serial
->dev
;
1309 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
1311 /* something went wrong */
1312 dev_err(&edge_port
->port
->dev
, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__
, status
);
1313 edge_port
->write_in_progress
= false;
1315 /* revert the credits as something bad happened. */
1316 edge_port
->txCredits
+= count
;
1317 edge_port
->icount
.tx
-= count
;
1319 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__
, count
, edge_port
->txCredits
, fifo
->count
);
1322 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1326 /*****************************************************************************
1328 * this function is called by the tty driver when it wants to know how many
1329 * bytes of data we can accept for a specific port.
1330 * If successful, we return the amount of room that we have for this port
1332 * Otherwise we return a negative error number.
1333 *****************************************************************************/
1334 static int edge_write_room (struct usb_serial_port
*port
)
1336 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1338 unsigned long flags
;
1340 dbg("%s", __FUNCTION__
);
1342 if (edge_port
== NULL
)
1344 if (edge_port
->closePending
)
1347 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1349 if (!edge_port
->open
) {
1350 dbg("%s - port not opened", __FUNCTION__
);
1354 // total of both buffers is still txCredit
1355 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1356 room
= edge_port
->txCredits
- edge_port
->txfifo
.count
;
1357 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1359 dbg("%s - returns %d", __FUNCTION__
, room
);
1364 /*****************************************************************************
1365 * edge_chars_in_buffer
1366 * this function is called by the tty driver when it wants to know how many
1367 * bytes of data we currently have outstanding in the port (data that has
1368 * been written, but hasn't made it out the port yet)
1369 * If successful, we return the number of bytes left to be written in the
1371 * Otherwise we return a negative error number.
1372 *****************************************************************************/
1373 static int edge_chars_in_buffer (struct usb_serial_port
*port
)
1375 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1377 unsigned long flags
;
1379 dbg("%s", __FUNCTION__
);
1381 if (edge_port
== NULL
)
1383 if (edge_port
->closePending
)
1386 if (!edge_port
->open
) {
1387 dbg("%s - port not opened", __FUNCTION__
);
1391 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1392 num_chars
= edge_port
->maxTxCredits
- edge_port
->txCredits
+ edge_port
->txfifo
.count
;
1393 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1395 dbg("%s(port %d) - returns %d", __FUNCTION__
, port
->number
, num_chars
);
1402 /*****************************************************************************
1404 * this function is called by the tty driver when it wants to stop the data
1405 * being read from the port.
1406 *****************************************************************************/
1407 static void edge_throttle (struct usb_serial_port
*port
)
1409 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1410 struct tty_struct
*tty
;
1413 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1415 if (edge_port
== NULL
)
1418 if (!edge_port
->open
) {
1419 dbg("%s - port not opened", __FUNCTION__
);
1425 dbg ("%s - no tty available", __FUNCTION__
);
1429 /* if we are implementing XON/XOFF, send the stop character */
1431 unsigned char stop_char
= STOP_CHAR(tty
);
1432 status
= edge_write (port
, &stop_char
, 1);
1438 /* if we are implementing RTS/CTS, toggle that line */
1439 if (tty
->termios
->c_cflag
& CRTSCTS
) {
1440 edge_port
->shadowMCR
&= ~MCR_RTS
;
1441 status
= send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1451 /*****************************************************************************
1453 * this function is called by the tty driver when it wants to resume the data
1454 * being read from the port (called after SerialThrottle is called)
1455 *****************************************************************************/
1456 static void edge_unthrottle (struct usb_serial_port
*port
)
1458 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1459 struct tty_struct
*tty
;
1462 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1464 if (edge_port
== NULL
)
1467 if (!edge_port
->open
) {
1468 dbg("%s - port not opened", __FUNCTION__
);
1474 dbg ("%s - no tty available", __FUNCTION__
);
1478 /* if we are implementing XON/XOFF, send the start character */
1480 unsigned char start_char
= START_CHAR(tty
);
1481 status
= edge_write (port
, &start_char
, 1);
1487 /* if we are implementing RTS/CTS, toggle that line */
1488 if (tty
->termios
->c_cflag
& CRTSCTS
) {
1489 edge_port
->shadowMCR
|= MCR_RTS
;
1490 status
= send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1500 /*****************************************************************************
1502 * this function is called by the tty driver when it wants to change the termios structure
1503 *****************************************************************************/
1504 static void edge_set_termios (struct usb_serial_port
*port
, struct ktermios
*old_termios
)
1506 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1507 struct tty_struct
*tty
= port
->tty
;
1510 if (!port
->tty
|| !port
->tty
->termios
) {
1511 dbg ("%s - no tty or termios", __FUNCTION__
);
1515 cflag
= tty
->termios
->c_cflag
;
1516 /* check that they really want us to change something */
1518 if (cflag
== old_termios
->c_cflag
&&
1519 tty
->termios
->c_iflag
== old_termios
->c_iflag
) {
1520 dbg("%s - nothing to change", __FUNCTION__
);
1525 dbg("%s - clfag %08x iflag %08x", __FUNCTION__
,
1526 tty
->termios
->c_cflag
, tty
->termios
->c_iflag
);
1528 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__
,
1529 old_termios
->c_cflag
, old_termios
->c_iflag
);
1532 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1534 if (edge_port
== NULL
)
1537 if (!edge_port
->open
) {
1538 dbg("%s - port not opened", __FUNCTION__
);
1542 /* change the port settings to the new ones specified */
1543 change_port_settings (edge_port
, old_termios
);
1549 /*****************************************************************************
1550 * get_lsr_info - get line status register info
1552 * Purpose: Let user call ioctl() to get info when the UART physically
1553 * is emptied. On bus types like RS485, the transmitter must
1554 * release the bus after transmitting. This must be done when
1555 * the transmit shift register is empty, not be done when the
1556 * transmit holding register is empty. This functionality
1557 * allows an RS485 driver to be written in user space.
1558 *****************************************************************************/
1559 static int get_lsr_info(struct edgeport_port
*edge_port
, unsigned int __user
*value
)
1561 unsigned int result
= 0;
1562 unsigned long flags
;
1564 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1565 if (edge_port
->maxTxCredits
== edge_port
->txCredits
&&
1566 edge_port
->txfifo
.count
== 0) {
1567 dbg("%s -- Empty", __FUNCTION__
);
1568 result
= TIOCSER_TEMT
;
1570 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1572 if (copy_to_user(value
, &result
, sizeof(int)))
1577 static int get_number_bytes_avail(struct edgeport_port
*edge_port
, unsigned int __user
*value
)
1579 unsigned int result
= 0;
1580 struct tty_struct
*tty
= edge_port
->port
->tty
;
1583 return -ENOIOCTLCMD
;
1585 result
= tty
->read_cnt
;
1587 dbg("%s(%d) = %d", __FUNCTION__
, edge_port
->port
->number
, result
);
1588 if (copy_to_user(value
, &result
, sizeof(int)))
1591 return -ENOIOCTLCMD
;
1594 static int edge_tiocmset (struct usb_serial_port
*port
, struct file
*file
, unsigned int set
, unsigned int clear
)
1596 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1599 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1601 mcr
= edge_port
->shadowMCR
;
1602 if (set
& TIOCM_RTS
)
1604 if (set
& TIOCM_DTR
)
1606 if (set
& TIOCM_LOOP
)
1607 mcr
|= MCR_LOOPBACK
;
1609 if (clear
& TIOCM_RTS
)
1611 if (clear
& TIOCM_DTR
)
1613 if (clear
& TIOCM_LOOP
)
1614 mcr
&= ~MCR_LOOPBACK
;
1616 edge_port
->shadowMCR
= mcr
;
1618 send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1623 static int edge_tiocmget(struct usb_serial_port
*port
, struct file
*file
)
1625 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1626 unsigned int result
= 0;
1630 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1632 msr
= edge_port
->shadowMSR
;
1633 mcr
= edge_port
->shadowMCR
;
1634 result
= ((mcr
& MCR_DTR
) ? TIOCM_DTR
: 0) /* 0x002 */
1635 | ((mcr
& MCR_RTS
) ? TIOCM_RTS
: 0) /* 0x004 */
1636 | ((msr
& EDGEPORT_MSR_CTS
) ? TIOCM_CTS
: 0) /* 0x020 */
1637 | ((msr
& EDGEPORT_MSR_CD
) ? TIOCM_CAR
: 0) /* 0x040 */
1638 | ((msr
& EDGEPORT_MSR_RI
) ? TIOCM_RI
: 0) /* 0x080 */
1639 | ((msr
& EDGEPORT_MSR_DSR
) ? TIOCM_DSR
: 0); /* 0x100 */
1642 dbg("%s -- %x", __FUNCTION__
, result
);
1647 static int get_serial_info(struct edgeport_port
*edge_port
, struct serial_struct __user
*retinfo
)
1649 struct serial_struct tmp
;
1654 memset(&tmp
, 0, sizeof(tmp
));
1656 tmp
.type
= PORT_16550A
;
1657 tmp
.line
= edge_port
->port
->serial
->minor
;
1658 tmp
.port
= edge_port
->port
->number
;
1660 tmp
.flags
= ASYNC_SKIP_TEST
| ASYNC_AUTO_IRQ
;
1661 tmp
.xmit_fifo_size
= edge_port
->maxTxCredits
;
1662 tmp
.baud_base
= 9600;
1663 tmp
.close_delay
= 5*HZ
;
1664 tmp
.closing_wait
= 30*HZ
;
1665 // tmp.custom_divisor = state->custom_divisor;
1666 // tmp.hub6 = state->hub6;
1667 // tmp.io_type = state->io_type;
1669 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
1676 /*****************************************************************************
1678 * this function handles any ioctl calls to the driver
1679 *****************************************************************************/
1680 static int edge_ioctl (struct usb_serial_port
*port
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1683 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1684 struct async_icount cnow
;
1685 struct async_icount cprev
;
1686 struct serial_icounter_struct icount
;
1688 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__
, port
->number
, cmd
);
1691 // return number of bytes available
1693 dbg("%s (%d) TIOCINQ", __FUNCTION__
, port
->number
);
1694 return get_number_bytes_avail(edge_port
, (unsigned int __user
*) arg
);
1698 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__
, port
->number
);
1699 return get_lsr_info(edge_port
, (unsigned int __user
*) arg
);
1703 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__
, port
->number
);
1704 return get_serial_info(edge_port
, (struct serial_struct __user
*) arg
);
1707 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__
, port
->number
);
1711 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__
, port
->number
);
1712 cprev
= edge_port
->icount
;
1714 prepare_to_wait(&edge_port
->delta_msr_wait
, &wait
, TASK_INTERRUPTIBLE
);
1716 finish_wait(&edge_port
->delta_msr_wait
, &wait
);
1717 /* see if a signal did it */
1718 if (signal_pending(current
))
1719 return -ERESTARTSYS
;
1720 cnow
= edge_port
->icount
;
1721 if (cnow
.rng
== cprev
.rng
&& cnow
.dsr
== cprev
.dsr
&&
1722 cnow
.dcd
== cprev
.dcd
&& cnow
.cts
== cprev
.cts
)
1723 return -EIO
; /* no change => error */
1724 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1725 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1726 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
1727 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
)) ) {
1736 cnow
= edge_port
->icount
;
1737 memset(&icount
, 0, sizeof(icount
));
1738 icount
.cts
= cnow
.cts
;
1739 icount
.dsr
= cnow
.dsr
;
1740 icount
.rng
= cnow
.rng
;
1741 icount
.dcd
= cnow
.dcd
;
1742 icount
.rx
= cnow
.rx
;
1743 icount
.tx
= cnow
.tx
;
1744 icount
.frame
= cnow
.frame
;
1745 icount
.overrun
= cnow
.overrun
;
1746 icount
.parity
= cnow
.parity
;
1747 icount
.brk
= cnow
.brk
;
1748 icount
.buf_overrun
= cnow
.buf_overrun
;
1750 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__
, port
->number
, icount
.rx
, icount
.tx
);
1751 if (copy_to_user((void __user
*)arg
, &icount
, sizeof(icount
)))
1756 return -ENOIOCTLCMD
;
1760 /*****************************************************************************
1762 * this function sends a break to the port
1763 *****************************************************************************/
1764 static void edge_break (struct usb_serial_port
*port
, int break_state
)
1766 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1767 struct edgeport_serial
*edge_serial
= usb_get_serial_data(port
->serial
);
1770 if ((!edge_serial
->is_epic
) ||
1771 ((edge_serial
->is_epic
) &&
1772 (edge_serial
->epic_descriptor
.Supports
.IOSPChase
))) {
1773 /* flush and chase */
1774 edge_port
->chaseResponsePending
= true;
1776 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__
);
1777 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1779 // block until chase finished
1780 block_until_chase_response(edge_port
);
1782 edge_port
->chaseResponsePending
= false;
1786 if ((!edge_serial
->is_epic
) ||
1787 ((edge_serial
->is_epic
) &&
1788 (edge_serial
->epic_descriptor
.Supports
.IOSPSetClrBreak
))) {
1789 if (break_state
== -1) {
1790 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__
);
1791 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_SET_BREAK
, 0);
1793 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__
);
1794 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_CLEAR_BREAK
, 0);
1797 dbg("%s - error sending break set/clear command.", __FUNCTION__
);
1805 /*****************************************************************************
1807 * this function handles the data received on the bulk in pipe.
1808 *****************************************************************************/
1809 static void process_rcvd_data (struct edgeport_serial
*edge_serial
, unsigned char * buffer
, __u16 bufferLength
)
1811 struct usb_serial_port
*port
;
1812 struct edgeport_port
*edge_port
;
1813 struct tty_struct
*tty
;
1814 __u16 lastBufferLength
;
1817 dbg("%s", __FUNCTION__
);
1819 lastBufferLength
= bufferLength
+ 1;
1821 while (bufferLength
> 0) {
1822 /* failsafe incase we get a message that we don't understand */
1823 if (lastBufferLength
== bufferLength
) {
1824 dbg("%s - stuck in loop, exiting it.", __FUNCTION__
);
1827 lastBufferLength
= bufferLength
;
1829 switch (edge_serial
->rxState
) {
1831 edge_serial
->rxHeader1
= *buffer
;
1835 if (bufferLength
== 0) {
1836 edge_serial
->rxState
= EXPECT_HDR2
;
1839 /* otherwise, drop on through */
1842 edge_serial
->rxHeader2
= *buffer
;
1846 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__
, edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1848 // Process depending on whether this header is
1851 if (IS_CMD_STAT_HDR(edge_serial
->rxHeader1
)) {
1852 // Decode this status header and goto EXPECT_HDR1 (if we
1853 // can process the status with only 2 bytes), or goto
1854 // EXPECT_HDR3 to get the third byte.
1856 edge_serial
->rxPort
= IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1857 edge_serial
->rxStatusCode
= IOSP_GET_STATUS_CODE(edge_serial
->rxHeader1
);
1859 if (!IOSP_STATUS_IS_2BYTE(edge_serial
->rxStatusCode
)) {
1860 // This status needs additional bytes. Save what we have
1861 // and then wait for more data.
1862 edge_serial
->rxStatusParam
= edge_serial
->rxHeader2
;
1864 edge_serial
->rxState
= EXPECT_HDR3
;
1868 // We have all the header bytes, process the status now
1869 process_rcvd_status (edge_serial
, edge_serial
->rxHeader2
, 0);
1870 edge_serial
->rxState
= EXPECT_HDR1
;
1873 edge_serial
->rxPort
= IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1874 edge_serial
->rxBytesRemaining
= IOSP_GET_HDR_DATA_LEN(edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1876 dbg("%s - Data for Port %u Len %u", __FUNCTION__
, edge_serial
->rxPort
, edge_serial
->rxBytesRemaining
);
1878 //ASSERT( DevExt->RxPort < DevExt->NumPorts );
1879 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
1881 if (bufferLength
== 0 ) {
1882 edge_serial
->rxState
= EXPECT_DATA
;
1885 // Else, drop through
1888 case EXPECT_DATA
: // Expect data
1890 if (bufferLength
< edge_serial
->rxBytesRemaining
) {
1891 rxLen
= bufferLength
;
1892 edge_serial
->rxState
= EXPECT_DATA
; // Expect data to start next buffer
1894 // BufLen >= RxBytesRemaining
1895 rxLen
= edge_serial
->rxBytesRemaining
;
1896 edge_serial
->rxState
= EXPECT_HDR1
; // Start another header next time
1899 bufferLength
-= rxLen
;
1900 edge_serial
->rxBytesRemaining
-= rxLen
;
1902 /* spit this data back into the tty driver if this port is open */
1904 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1905 edge_port
= usb_get_serial_port_data(port
);
1906 if (edge_port
->open
) {
1907 tty
= edge_port
->port
->tty
;
1909 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__
, rxLen
, edge_serial
->rxPort
);
1910 edge_tty_recv(&edge_serial
->serial
->dev
->dev
, tty
, buffer
, rxLen
);
1912 edge_port
->icount
.rx
+= rxLen
;
1919 case EXPECT_HDR3
: // Expect 3rd byte of status header
1920 edge_serial
->rxHeader3
= *buffer
;
1924 // We have all the header bytes, process the status now
1925 process_rcvd_status (edge_serial
, edge_serial
->rxStatusParam
, edge_serial
->rxHeader3
);
1926 edge_serial
->rxState
= EXPECT_HDR1
;
1934 /*****************************************************************************
1935 * process_rcvd_status
1936 * this function handles the any status messages received on the bulk in pipe.
1937 *****************************************************************************/
1938 static void process_rcvd_status (struct edgeport_serial
*edge_serial
, __u8 byte2
, __u8 byte3
)
1940 struct usb_serial_port
*port
;
1941 struct edgeport_port
*edge_port
;
1942 __u8 code
= edge_serial
->rxStatusCode
;
1944 /* switch the port pointer to the one being currently talked about */
1945 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1946 edge_port
= usb_get_serial_port_data(port
);
1947 if (edge_port
== NULL
) {
1948 dev_err(&edge_serial
->serial
->dev
->dev
, "%s - edge_port == NULL for port %d\n", __FUNCTION__
, edge_serial
->rxPort
);
1952 dbg("%s - port %d", __FUNCTION__
, edge_serial
->rxPort
);
1954 if (code
== IOSP_EXT_STATUS
) {
1956 case IOSP_EXT_STATUS_CHASE_RSP
:
1957 // we want to do EXT status regardless of port open/closed
1958 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte3
);
1959 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
1960 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
1961 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
1962 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
1963 // like wait longer in block_until_chase_response, but for now we don't.
1964 edge_port
->chaseResponsePending
= false;
1965 wake_up (&edge_port
->wait_chase
);
1968 case IOSP_EXT_STATUS_RX_CHECK_RSP
:
1969 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__
, edge_serial
->rxPort
, byte3
);
1970 //Port->RxCheckRsp = true;
1975 if (code
== IOSP_STATUS_OPEN_RSP
) {
1976 edge_port
->txCredits
= GET_TX_BUFFER_SIZE(byte3
);
1977 edge_port
->maxTxCredits
= edge_port
->txCredits
;
1978 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__
, edge_serial
->rxPort
, byte2
, edge_port
->txCredits
);
1979 handle_new_msr (edge_port
, byte2
);
1981 /* send the current line settings to the port so we are in sync with any further termios calls */
1982 if (edge_port
->port
->tty
)
1983 change_port_settings (edge_port
, edge_port
->port
->tty
->termios
);
1985 /* we have completed the open */
1986 edge_port
->openPending
= false;
1987 edge_port
->open
= true;
1988 wake_up(&edge_port
->wait_open
);
1992 // If port is closed, silently discard all rcvd status. We can
1993 // have cases where buffered status is received AFTER the close
1994 // port command is sent to the Edgeport.
1995 if (!edge_port
->open
|| edge_port
->closePending
) {
2000 // Not currently sent by Edgeport
2001 case IOSP_STATUS_LSR
:
2002 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte2
);
2003 handle_new_lsr(edge_port
, false, byte2
, 0);
2006 case IOSP_STATUS_LSR_DATA
:
2007 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte2
, byte3
);
2008 // byte2 is LSR Register
2009 // byte3 is broken data byte
2010 handle_new_lsr(edge_port
, true, byte2
, byte3
);
2013 // case IOSP_EXT_4_STATUS:
2014 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2017 case IOSP_STATUS_MSR
:
2018 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte2
);
2020 // Process this new modem status and generate appropriate
2021 // events, etc, based on the new status. This routine
2022 // also saves the MSR in Port->ShadowMsr.
2023 handle_new_msr(edge_port
, byte2
);
2027 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__
, code
);
2035 /*****************************************************************************
2037 * this function passes data on to the tty flip buffer
2038 *****************************************************************************/
2039 static void edge_tty_recv(struct device
*dev
, struct tty_struct
*tty
, unsigned char *data
, int length
)
2044 cnt
= tty_buffer_request_room(tty
, length
);
2046 dev_err(dev
, "%s - dropping data, %d bytes lost\n",
2047 __FUNCTION__
, length
- cnt
);
2051 tty_insert_flip_string(tty
, data
, cnt
);
2054 } while (length
> 0);
2056 tty_flip_buffer_push(tty
);
2060 /*****************************************************************************
2062 * this function handles any change to the msr register for a port.
2063 *****************************************************************************/
2064 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
)
2066 struct async_icount
*icount
;
2068 dbg("%s %02x", __FUNCTION__
, newMsr
);
2070 if (newMsr
& (EDGEPORT_MSR_DELTA_CTS
| EDGEPORT_MSR_DELTA_DSR
| EDGEPORT_MSR_DELTA_RI
| EDGEPORT_MSR_DELTA_CD
)) {
2071 icount
= &edge_port
->icount
;
2073 /* update input line counters */
2074 if (newMsr
& EDGEPORT_MSR_DELTA_CTS
) {
2077 if (newMsr
& EDGEPORT_MSR_DELTA_DSR
) {
2080 if (newMsr
& EDGEPORT_MSR_DELTA_CD
) {
2083 if (newMsr
& EDGEPORT_MSR_DELTA_RI
) {
2086 wake_up_interruptible(&edge_port
->delta_msr_wait
);
2089 /* Save the new modem status */
2090 edge_port
->shadowMSR
= newMsr
& 0xf0;
2096 /*****************************************************************************
2098 * this function handles any change to the lsr register for a port.
2099 *****************************************************************************/
2100 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
, __u8 lsr
, __u8 data
)
2102 __u8 newLsr
= (__u8
)(lsr
& (__u8
)(LSR_OVER_ERR
| LSR_PAR_ERR
| LSR_FRM_ERR
| LSR_BREAK
));
2103 struct async_icount
*icount
;
2105 dbg("%s - %02x", __FUNCTION__
, newLsr
);
2107 edge_port
->shadowLSR
= lsr
;
2109 if (newLsr
& LSR_BREAK
) {
2111 // Parity and Framing errors only count if they
2112 // occur exclusive of a break being
2115 newLsr
&= (__u8
)(LSR_OVER_ERR
| LSR_BREAK
);
2118 /* Place LSR data byte into Rx buffer */
2119 if (lsrData
&& edge_port
->port
->tty
)
2120 edge_tty_recv(&edge_port
->port
->dev
, edge_port
->port
->tty
, &data
, 1);
2122 /* update input line counters */
2123 icount
= &edge_port
->icount
;
2124 if (newLsr
& LSR_BREAK
) {
2127 if (newLsr
& LSR_OVER_ERR
) {
2130 if (newLsr
& LSR_PAR_ERR
) {
2133 if (newLsr
& LSR_FRM_ERR
) {
2141 /****************************************************************************
2143 * writes a number of bytes to the Edgeport device's sram starting at the
2145 * If successful returns the number of bytes written, otherwise it returns
2146 * a negative error number of the problem.
2147 ****************************************************************************/
2148 static int sram_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
)
2151 __u16 current_length
;
2152 unsigned char *transfer_buffer
;
2154 dbg("%s - %x, %x, %d", __FUNCTION__
, extAddr
, addr
, length
);
2156 transfer_buffer
= kmalloc (64, GFP_KERNEL
);
2157 if (!transfer_buffer
) {
2158 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 64);
2162 /* need to split these writes up into 64 byte chunks */
2164 while (length
> 0) {
2166 current_length
= 64;
2168 current_length
= length
;
2170 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2171 memcpy (transfer_buffer
, data
, current_length
);
2172 result
= usb_control_msg (serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0), USB_REQUEST_ION_WRITE_RAM
,
2173 0x40, addr
, extAddr
, transfer_buffer
, current_length
, 300);
2176 length
-= current_length
;
2177 addr
+= current_length
;
2178 data
+= current_length
;
2181 kfree (transfer_buffer
);
2186 /****************************************************************************
2188 * writes a number of bytes to the Edgeport device's ROM starting at the
2190 * If successful returns the number of bytes written, otherwise it returns
2191 * a negative error number of the problem.
2192 ****************************************************************************/
2193 static int rom_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
)
2196 __u16 current_length
;
2197 unsigned char *transfer_buffer
;
2199 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2201 transfer_buffer
= kmalloc (64, GFP_KERNEL
);
2202 if (!transfer_buffer
) {
2203 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 64);
2207 /* need to split these writes up into 64 byte chunks */
2209 while (length
> 0) {
2211 current_length
= 64;
2213 current_length
= length
;
2215 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2216 memcpy (transfer_buffer
, data
, current_length
);
2217 result
= usb_control_msg (serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0), USB_REQUEST_ION_WRITE_ROM
,
2218 0x40, addr
, extAddr
, transfer_buffer
, current_length
, 300);
2221 length
-= current_length
;
2222 addr
+= current_length
;
2223 data
+= current_length
;
2226 kfree (transfer_buffer
);
2231 /****************************************************************************
2233 * reads a number of bytes from the Edgeport device starting at the given
2235 * If successful returns the number of bytes read, otherwise it returns
2236 * a negative error number of the problem.
2237 ****************************************************************************/
2238 static int rom_read (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
)
2241 __u16 current_length
;
2242 unsigned char *transfer_buffer
;
2244 dbg("%s - %x, %x, %d", __FUNCTION__
, extAddr
, addr
, length
);
2246 transfer_buffer
= kmalloc (64, GFP_KERNEL
);
2247 if (!transfer_buffer
) {
2248 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 64);
2252 /* need to split these reads up into 64 byte chunks */
2254 while (length
> 0) {
2256 current_length
= 64;
2258 current_length
= length
;
2260 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2261 result
= usb_control_msg (serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0), USB_REQUEST_ION_READ_ROM
,
2262 0xC0, addr
, extAddr
, transfer_buffer
, current_length
, 300);
2265 memcpy (data
, transfer_buffer
, current_length
);
2266 length
-= current_length
;
2267 addr
+= current_length
;
2268 data
+= current_length
;
2271 kfree (transfer_buffer
);
2276 /****************************************************************************
2278 * Is used to send a IOSP message to the Edgeport device
2279 ****************************************************************************/
2280 static int send_iosp_ext_cmd (struct edgeport_port
*edge_port
, __u8 command
, __u8 param
)
2282 unsigned char *buffer
;
2283 unsigned char *currentCommand
;
2287 dbg("%s - %d, %d", __FUNCTION__
, command
, param
);
2289 buffer
= kmalloc (10, GFP_ATOMIC
);
2291 dev_err(&edge_port
->port
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 10);
2295 currentCommand
= buffer
;
2297 MAKE_CMD_EXT_CMD (¤tCommand
, &length
,
2298 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2301 status
= write_cmd_usb (edge_port
, buffer
, length
);
2303 /* something bad happened, let's free up the memory */
2311 /*****************************************************************************
2313 * this function writes the given buffer out to the bulk write endpoint.
2314 *****************************************************************************/
2315 static int write_cmd_usb (struct edgeport_port
*edge_port
, unsigned char *buffer
, int length
)
2317 struct edgeport_serial
*edge_serial
= usb_get_serial_data(edge_port
->port
->serial
);
2322 usb_serial_debug_data(debug
, &edge_port
->port
->dev
, __FUNCTION__
, length
, buffer
);
2324 /* Allocate our next urb */
2325 urb
= usb_alloc_urb (0, GFP_ATOMIC
);
2329 atomic_inc(&CmdUrbs
);
2330 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__
, urb
, atomic_read(&CmdUrbs
));
2332 usb_fill_bulk_urb (urb
, edge_serial
->serial
->dev
,
2333 usb_sndbulkpipe(edge_serial
->serial
->dev
, edge_serial
->bulk_out_endpoint
),
2334 buffer
, length
, edge_bulk_out_cmd_callback
, edge_port
);
2336 edge_port
->commandPending
= true;
2337 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
2340 /* something went wrong */
2341 dev_err(&edge_port
->port
->dev
, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__
, status
);
2344 atomic_dec(&CmdUrbs
);
2348 // wait for command to finish
2349 timeout
= COMMAND_TIMEOUT
;
2351 wait_event (&edge_port
->wait_command
, !edge_port
->commandPending
);
2353 if (edge_port
->commandPending
) {
2354 /* command timed out */
2355 dbg("%s - command timed out", __FUNCTION__
);
2363 /*****************************************************************************
2364 * send_cmd_write_baud_rate
2365 * this function sends the proper command to change the baud rate of the
2367 *****************************************************************************/
2368 static int send_cmd_write_baud_rate (struct edgeport_port
*edge_port
, int baudRate
)
2370 struct edgeport_serial
*edge_serial
= usb_get_serial_data(edge_port
->port
->serial
);
2371 unsigned char *cmdBuffer
;
2372 unsigned char *currCmd
;
2376 unsigned char number
= edge_port
->port
->number
- edge_port
->port
->serial
->minor
;
2378 if ((!edge_serial
->is_epic
) ||
2379 ((edge_serial
->is_epic
) &&
2380 (!edge_serial
->epic_descriptor
.Supports
.IOSPSetBaudRate
))) {
2381 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2382 edge_port
->port
->number
, baudRate
);
2386 dbg("%s - port = %d, baud = %d", __FUNCTION__
, edge_port
->port
->number
, baudRate
);
2388 status
= calc_baud_rate_divisor (baudRate
, &divisor
);
2390 dev_err(&edge_port
->port
->dev
, "%s - bad baud rate\n", __FUNCTION__
);
2394 // Alloc memory for the string of commands.
2395 cmdBuffer
= kmalloc (0x100, GFP_ATOMIC
);
2397 dev_err(&edge_port
->port
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 0x100);
2400 currCmd
= cmdBuffer
;
2402 // Enable access to divisor latch
2403 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, LCR
, LCR_DL_ENABLE
);
2405 // Write the divisor itself
2406 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, DLL
, LOW8 (divisor
) );
2407 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, DLM
, HIGH8(divisor
) );
2409 // Restore original value to disable access to divisor latch
2410 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, LCR
, edge_port
->shadowLCR
);
2412 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2414 /* something bad happened, let's free up the memory */
2422 /*****************************************************************************
2423 * calc_baud_rate_divisor
2424 * this function calculates the proper baud rate divisor for the specified
2426 *****************************************************************************/
2427 static int calc_baud_rate_divisor (int baudrate
, int *divisor
)
2433 dbg("%s - %d", __FUNCTION__
, baudrate
);
2435 for (i
= 0; i
< ARRAY_SIZE(divisor_table
); i
++) {
2436 if ( divisor_table
[i
].BaudRate
== baudrate
) {
2437 *divisor
= divisor_table
[i
].Divisor
;
2442 // We have tried all of the standard baud rates
2443 // lets try to calculate the divisor for this baud rate
2444 // Make sure the baud rate is reasonable
2445 if (baudrate
> 50 && baudrate
< 230400) {
2447 custom
= (__u16
)((230400L + baudrate
/2) / baudrate
);
2451 dbg("%s - Baud %d = %d\n", __FUNCTION__
, baudrate
, custom
);
2459 /*****************************************************************************
2460 * send_cmd_write_uart_register
2461 * this function builds up a uart register message and sends to to the device.
2462 *****************************************************************************/
2463 static int send_cmd_write_uart_register (struct edgeport_port
*edge_port
, __u8 regNum
, __u8 regValue
)
2465 struct edgeport_serial
*edge_serial
= usb_get_serial_data(edge_port
->port
->serial
);
2466 unsigned char *cmdBuffer
;
2467 unsigned char *currCmd
;
2468 unsigned long cmdLen
= 0;
2471 dbg("%s - write to %s register 0x%02x", (regNum
== MCR
) ? "MCR" : "LCR", __FUNCTION__
, regValue
);
2473 if ((!edge_serial
->is_epic
) ||
2474 ((edge_serial
->is_epic
) &&
2475 (!edge_serial
->epic_descriptor
.Supports
.IOSPWriteMCR
) &&
2477 dbg("SendCmdWriteUartReg - Not writing to MCR Register");
2481 if ((!edge_serial
->is_epic
) ||
2482 ((edge_serial
->is_epic
) &&
2483 (!edge_serial
->epic_descriptor
.Supports
.IOSPWriteLCR
) &&
2485 dbg ("SendCmdWriteUartReg - Not writing to LCR Register");
2489 // Alloc memory for the string of commands.
2490 cmdBuffer
= kmalloc (0x10, GFP_ATOMIC
);
2491 if (cmdBuffer
== NULL
) {
2495 currCmd
= cmdBuffer
;
2497 // Build a cmd in the buffer to write the given register
2498 MAKE_CMD_WRITE_REG (&currCmd
, &cmdLen
,
2499 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2502 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2504 /* something bad happened, let's free up the memory */
2512 /*****************************************************************************
2513 * change_port_settings
2514 * This routine is called to set the UART on the device to match the specified
2516 *****************************************************************************/
2520 static void change_port_settings (struct edgeport_port
*edge_port
, struct ktermios
*old_termios
)
2522 struct edgeport_serial
*edge_serial
= usb_get_serial_data(edge_port
->port
->serial
);
2523 struct tty_struct
*tty
;
2534 dbg("%s - port %d", __FUNCTION__
, edge_port
->port
->number
);
2536 if (!edge_port
->open
&&
2537 !edge_port
->openPending
) {
2538 dbg("%s - port not opened", __FUNCTION__
);
2542 tty
= edge_port
->port
->tty
;
2545 dbg("%s - no tty structures", __FUNCTION__
);
2549 cflag
= tty
->termios
->c_cflag
;
2551 switch (cflag
& CSIZE
) {
2552 case CS5
: lData
= LCR_BITS_5
; mask
= 0x1f; dbg("%s - data bits = 5", __FUNCTION__
); break;
2553 case CS6
: lData
= LCR_BITS_6
; mask
= 0x3f; dbg("%s - data bits = 6", __FUNCTION__
); break;
2554 case CS7
: lData
= LCR_BITS_7
; mask
= 0x7f; dbg("%s - data bits = 7", __FUNCTION__
); break;
2556 case CS8
: lData
= LCR_BITS_8
; dbg("%s - data bits = 8", __FUNCTION__
); break;
2559 lParity
= LCR_PAR_NONE
;
2560 if (cflag
& PARENB
) {
2561 if (cflag
& CMSPAR
) {
2562 if (cflag
& PARODD
) {
2563 lParity
= LCR_PAR_MARK
;
2564 dbg("%s - parity = mark", __FUNCTION__
);
2566 lParity
= LCR_PAR_SPACE
;
2567 dbg("%s - parity = space", __FUNCTION__
);
2569 } else if (cflag
& PARODD
) {
2570 lParity
= LCR_PAR_ODD
;
2571 dbg("%s - parity = odd", __FUNCTION__
);
2573 lParity
= LCR_PAR_EVEN
;
2574 dbg("%s - parity = even", __FUNCTION__
);
2577 dbg("%s - parity = none", __FUNCTION__
);
2580 if (cflag
& CSTOPB
) {
2582 dbg("%s - stop bits = 2", __FUNCTION__
);
2585 dbg("%s - stop bits = 1", __FUNCTION__
);
2588 /* figure out the flow control settings */
2589 rxFlow
= txFlow
= 0x00;
2590 if (cflag
& CRTSCTS
) {
2591 rxFlow
|= IOSP_RX_FLOW_RTS
;
2592 txFlow
|= IOSP_TX_FLOW_CTS
;
2593 dbg("%s - RTS/CTS is enabled", __FUNCTION__
);
2595 dbg("%s - RTS/CTS is disabled", __FUNCTION__
);
2598 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2599 if (I_IXOFF(tty
) || I_IXON(tty
)) {
2600 unsigned char stop_char
= STOP_CHAR(tty
);
2601 unsigned char start_char
= START_CHAR(tty
);
2603 if ((!edge_serial
->is_epic
) ||
2604 ((edge_serial
->is_epic
) &&
2605 (edge_serial
->epic_descriptor
.Supports
.IOSPSetXChar
))) {
2606 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_XON_CHAR
, start_char
);
2607 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_XOFF_CHAR
, stop_char
);
2610 /* if we are implementing INBOUND XON/XOFF */
2612 rxFlow
|= IOSP_RX_FLOW_XON_XOFF
;
2613 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__
, start_char
, stop_char
);
2615 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__
);
2618 /* if we are implementing OUTBOUND XON/XOFF */
2620 txFlow
|= IOSP_TX_FLOW_XON_XOFF
;
2621 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__
, start_char
, stop_char
);
2623 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__
);
2627 /* Set flow control to the configured value */
2628 if ((!edge_serial
->is_epic
) ||
2629 ((edge_serial
->is_epic
) &&
2630 (edge_serial
->epic_descriptor
.Supports
.IOSPSetRxFlow
)))
2631 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_RX_FLOW
, rxFlow
);
2632 if ((!edge_serial
->is_epic
) ||
2633 ((edge_serial
->is_epic
) &&
2634 (edge_serial
->epic_descriptor
.Supports
.IOSPSetTxFlow
)))
2635 send_iosp_ext_cmd(edge_port
, IOSP_CMD_SET_TX_FLOW
, txFlow
);
2638 edge_port
->shadowLCR
&= ~(LCR_BITS_MASK
| LCR_STOP_MASK
| LCR_PAR_MASK
);
2639 edge_port
->shadowLCR
|= (lData
| lParity
| lStop
);
2641 edge_port
->validDataMask
= mask
;
2643 /* Send the updated LCR value to the EdgePort */
2644 status
= send_cmd_write_uart_register(edge_port
, LCR
, edge_port
->shadowLCR
);
2649 /* set up the MCR register and send it to the EdgePort */
2650 edge_port
->shadowMCR
= MCR_MASTER_IE
;
2651 if (cflag
& CBAUD
) {
2652 edge_port
->shadowMCR
|= (MCR_DTR
| MCR_RTS
);
2654 status
= send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
2659 /* Determine divisor based on baud rate */
2660 baud
= tty_get_baud_rate(tty
);
2662 /* pick a default, any default... */
2666 dbg("%s - baud rate = %d", __FUNCTION__
, baud
);
2667 status
= send_cmd_write_baud_rate (edge_port
, baud
);
2673 /****************************************************************************
2675 * Turns a string from Unicode into ASCII.
2676 * Doesn't do a good job with any characters that are outside the normal
2677 * ASCII range, but it's only for debugging...
2678 * NOTE: expects the unicode in LE format
2679 ****************************************************************************/
2680 static void unicode_to_ascii(char *string
, int buflen
, __le16
*unicode
, int unicode_size
)
2684 if (buflen
<= 0) /* never happens, but... */
2686 --buflen
; /* space for nul */
2688 for (i
= 0; i
< unicode_size
; i
++) {
2691 string
[i
] = (char)(le16_to_cpu(unicode
[i
]));
2697 /****************************************************************************
2698 * get_manufacturing_desc
2699 * reads in the manufacturing descriptor and stores it into the serial
2701 ****************************************************************************/
2702 static void get_manufacturing_desc (struct edgeport_serial
*edge_serial
)
2706 dbg("getting manufacturer descriptor");
2708 response
= rom_read (edge_serial
->serial
, (EDGE_MANUF_DESC_ADDR
& 0xffff0000) >> 16,
2709 (__u16
)(EDGE_MANUF_DESC_ADDR
& 0x0000ffff), EDGE_MANUF_DESC_LEN
,
2710 (__u8
*)(&edge_serial
->manuf_descriptor
));
2713 dev_err(&edge_serial
->serial
->dev
->dev
, "error in getting manufacturer descriptor\n");
2716 dbg("**Manufacturer Descriptor");
2717 dbg(" RomSize: %dK", edge_serial
->manuf_descriptor
.RomSize
);
2718 dbg(" RamSize: %dK", edge_serial
->manuf_descriptor
.RamSize
);
2719 dbg(" CpuRev: %d", edge_serial
->manuf_descriptor
.CpuRev
);
2720 dbg(" BoardRev: %d", edge_serial
->manuf_descriptor
.BoardRev
);
2721 dbg(" NumPorts: %d", edge_serial
->manuf_descriptor
.NumPorts
);
2722 dbg(" DescDate: %d/%d/%d", edge_serial
->manuf_descriptor
.DescDate
[0], edge_serial
->manuf_descriptor
.DescDate
[1], edge_serial
->manuf_descriptor
.DescDate
[2]+1900);
2723 unicode_to_ascii(string
, sizeof(string
),
2724 edge_serial
->manuf_descriptor
.SerialNumber
,
2725 edge_serial
->manuf_descriptor
.SerNumLength
/2);
2726 dbg(" SerialNumber: %s", string
);
2727 unicode_to_ascii(string
, sizeof(string
),
2728 edge_serial
->manuf_descriptor
.AssemblyNumber
,
2729 edge_serial
->manuf_descriptor
.AssemblyNumLength
/2);
2730 dbg(" AssemblyNumber: %s", string
);
2731 unicode_to_ascii(string
, sizeof(string
),
2732 edge_serial
->manuf_descriptor
.OemAssyNumber
,
2733 edge_serial
->manuf_descriptor
.OemAssyNumLength
/2);
2734 dbg(" OemAssyNumber: %s", string
);
2735 dbg(" UartType: %d", edge_serial
->manuf_descriptor
.UartType
);
2736 dbg(" IonPid: %d", edge_serial
->manuf_descriptor
.IonPid
);
2737 dbg(" IonConfig: %d", edge_serial
->manuf_descriptor
.IonConfig
);
2742 /****************************************************************************
2744 * reads in the bootloader descriptor and stores it into the serial
2746 ****************************************************************************/
2747 static void get_boot_desc (struct edgeport_serial
*edge_serial
)
2751 dbg("getting boot descriptor");
2753 response
= rom_read (edge_serial
->serial
, (EDGE_BOOT_DESC_ADDR
& 0xffff0000) >> 16,
2754 (__u16
)(EDGE_BOOT_DESC_ADDR
& 0x0000ffff), EDGE_BOOT_DESC_LEN
,
2755 (__u8
*)(&edge_serial
->boot_descriptor
));
2758 dev_err(&edge_serial
->serial
->dev
->dev
, "error in getting boot descriptor\n");
2760 dbg("**Boot Descriptor:");
2761 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial
->boot_descriptor
.BootCodeLength
));
2762 dbg(" MajorVersion: %d", edge_serial
->boot_descriptor
.MajorVersion
);
2763 dbg(" MinorVersion: %d", edge_serial
->boot_descriptor
.MinorVersion
);
2764 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
2765 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial
->boot_descriptor
.Capabilities
));
2766 dbg(" UConfig0: %d", edge_serial
->boot_descriptor
.UConfig0
);
2767 dbg(" UConfig1: %d", edge_serial
->boot_descriptor
.UConfig1
);
2772 /****************************************************************************
2773 * load_application_firmware
2774 * This is called to load the application firmware to the device
2775 ****************************************************************************/
2776 static void load_application_firmware (struct edgeport_serial
*edge_serial
)
2778 struct edge_firmware_image_record
*record
;
2779 unsigned char *firmware
;
2780 unsigned char *FirmwareImage
;
2785 switch (edge_serial
->product_info
.iDownloadFile
) {
2786 case EDGE_DOWNLOAD_FILE_I930
:
2787 dbg("downloading firmware version (930) %d.%d.%d",
2788 OperationalCodeImageVersion_GEN1
.MajorVersion
,
2789 OperationalCodeImageVersion_GEN1
.MinorVersion
,
2790 OperationalCodeImageVersion_GEN1
.BuildNumber
);
2791 firmware
= &OperationalCodeImage_GEN1
[0];
2792 FirmwareImage
= &OperationalCodeImage_GEN1
[0];
2793 ImageSize
= sizeof(OperationalCodeImage_GEN1
);
2796 case EDGE_DOWNLOAD_FILE_80251
:
2797 dbg("downloading firmware version (80251) %d.%d.%d",
2798 OperationalCodeImageVersion_GEN2
.MajorVersion
,
2799 OperationalCodeImageVersion_GEN2
.MinorVersion
,
2800 OperationalCodeImageVersion_GEN2
.BuildNumber
);
2801 firmware
= &OperationalCodeImage_GEN2
[0];
2802 FirmwareImage
= &OperationalCodeImage_GEN2
[0];
2803 ImageSize
= sizeof(OperationalCodeImage_GEN2
);
2806 case EDGE_DOWNLOAD_FILE_NONE
:
2807 dbg ("No download file specified, skipping download\n");
2816 record
= (struct edge_firmware_image_record
*)firmware
;
2817 response
= sram_write (edge_serial
->serial
, le16_to_cpu(record
->ExtAddr
), le16_to_cpu(record
->Addr
), le16_to_cpu(record
->Len
), &record
->Data
[0]);
2819 dev_err(&edge_serial
->serial
->dev
->dev
, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record
->ExtAddr
), le16_to_cpu(record
->Addr
), le16_to_cpu(record
->Len
));
2822 firmware
+= sizeof (struct edge_firmware_image_record
) + le16_to_cpu(record
->Len
);
2823 if (firmware
>= &FirmwareImage
[ImageSize
]) {
2828 dbg("sending exec_dl_code");
2829 response
= usb_control_msg (edge_serial
->serial
->dev
,
2830 usb_sndctrlpipe(edge_serial
->serial
->dev
, 0),
2831 USB_REQUEST_ION_EXEC_DL_CODE
,
2832 0x40, 0x4000, 0x0001, NULL
, 0, 3000);
2838 /****************************************************************************
2840 ****************************************************************************/
2841 static int edge_startup (struct usb_serial
*serial
)
2843 struct edgeport_serial
*edge_serial
;
2844 struct edgeport_port
*edge_port
;
2845 struct usb_device
*dev
;
2848 bool interrupt_in_found
;
2850 bool bulk_out_found
;
2851 static __u32 descriptor
[3] = { EDGE_COMPATIBILITY_MASK0
,
2852 EDGE_COMPATIBILITY_MASK1
,
2853 EDGE_COMPATIBILITY_MASK2
};
2857 /* create our private serial structure */
2858 edge_serial
= kzalloc(sizeof(struct edgeport_serial
), GFP_KERNEL
);
2859 if (edge_serial
== NULL
) {
2860 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __FUNCTION__
);
2863 spin_lock_init(&edge_serial
->es_lock
);
2864 edge_serial
->serial
= serial
;
2865 usb_set_serial_data(serial
, edge_serial
);
2867 /* get the name for the device from the device */
2868 i
= get_string(dev
, dev
->descriptor
.iManufacturer
,
2869 &edge_serial
->name
[0], MAX_NAME_LEN
+1);
2870 edge_serial
->name
[i
++] = ' ';
2871 get_string(dev
, dev
->descriptor
.iProduct
,
2872 &edge_serial
->name
[i
], MAX_NAME_LEN
+2 - i
);
2874 dev_info(&serial
->dev
->dev
, "%s detected\n", edge_serial
->name
);
2876 /* Read the epic descriptor */
2877 if (get_epic_descriptor(edge_serial
) <= 0) {
2878 /* memcpy descriptor to Supports structures */
2879 memcpy(&edge_serial
->epic_descriptor
.Supports
, descriptor
,
2880 sizeof(struct edge_compatibility_bits
));
2882 /* get the manufacturing descriptor for this device */
2883 get_manufacturing_desc (edge_serial
);
2885 /* get the boot descriptor */
2886 get_boot_desc (edge_serial
);
2888 get_product_info(edge_serial
);
2891 /* set the number of ports from the manufacturing description */
2892 /* serial->num_ports = serial->product_info.NumPorts; */
2893 if ((!edge_serial
->is_epic
) &&
2894 (edge_serial
->product_info
.NumPorts
!= serial
->num_ports
)) {
2895 dev_warn(&serial
->dev
->dev
, "Device Reported %d serial ports "
2896 "vs. core thinking we have %d ports, email "
2897 "greg@kroah.com this information.",
2898 edge_serial
->product_info
.NumPorts
,
2902 dbg("%s - time 1 %ld", __FUNCTION__
, jiffies
);
2904 /* If not an EPiC device */
2905 if (!edge_serial
->is_epic
) {
2906 /* now load the application firmware into this device */
2907 load_application_firmware (edge_serial
);
2909 dbg("%s - time 2 %ld", __FUNCTION__
, jiffies
);
2911 /* Check current Edgeport EEPROM and update if necessary */
2912 update_edgeport_E2PROM (edge_serial
);
2914 dbg("%s - time 3 %ld", __FUNCTION__
, jiffies
);
2916 /* set the configuration to use #1 */
2917 // dbg("set_configuration 1");
2918 // usb_set_configuration (dev, 1);
2921 /* we set up the pointers to the endpoints in the edge_open function,
2922 * as the structures aren't created yet. */
2924 /* set up our port private structures */
2925 for (i
= 0; i
< serial
->num_ports
; ++i
) {
2926 edge_port
= kmalloc (sizeof(struct edgeport_port
), GFP_KERNEL
);
2927 if (edge_port
== NULL
) {
2928 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __FUNCTION__
);
2929 for (j
= 0; j
< i
; ++j
) {
2930 kfree (usb_get_serial_port_data(serial
->port
[j
]));
2931 usb_set_serial_port_data(serial
->port
[j
], NULL
);
2933 usb_set_serial_data(serial
, NULL
);
2937 memset (edge_port
, 0, sizeof(struct edgeport_port
));
2938 spin_lock_init(&edge_port
->ep_lock
);
2939 edge_port
->port
= serial
->port
[i
];
2940 usb_set_serial_port_data(serial
->port
[i
], edge_port
);
2945 if (edge_serial
->is_epic
) {
2946 /* EPIC thing, set up our interrupt polling now and our read urb, so
2947 * that the device knows it really is connected. */
2948 interrupt_in_found
= bulk_in_found
= bulk_out_found
= false;
2949 for (i
= 0; i
< serial
->interface
->altsetting
[0].desc
.bNumEndpoints
; ++i
) {
2950 struct usb_endpoint_descriptor
*endpoint
;
2953 endpoint
= &serial
->interface
->altsetting
[0].endpoint
[i
].desc
;
2954 buffer_size
= le16_to_cpu(endpoint
->wMaxPacketSize
);
2955 if (!interrupt_in_found
&&
2956 (usb_endpoint_is_int_in(endpoint
))) {
2957 /* we found a interrupt in endpoint */
2958 dbg("found interrupt in");
2960 /* not set up yet, so do it now */
2961 edge_serial
->interrupt_read_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2962 if (!edge_serial
->interrupt_read_urb
) {
2963 err("out of memory");
2966 edge_serial
->interrupt_in_buffer
= kmalloc(buffer_size
, GFP_KERNEL
);
2967 if (!edge_serial
->interrupt_in_buffer
) {
2968 err("out of memory");
2969 usb_free_urb(edge_serial
->interrupt_read_urb
);
2972 edge_serial
->interrupt_in_endpoint
= endpoint
->bEndpointAddress
;
2974 /* set up our interrupt urb */
2975 usb_fill_int_urb(edge_serial
->interrupt_read_urb
,
2977 usb_rcvintpipe(dev
, endpoint
->bEndpointAddress
),
2978 edge_serial
->interrupt_in_buffer
,
2980 edge_interrupt_callback
,
2982 endpoint
->bInterval
);
2984 interrupt_in_found
= true;
2987 if (!bulk_in_found
&&
2988 (usb_endpoint_is_bulk_in(endpoint
))) {
2989 /* we found a bulk in endpoint */
2990 dbg("found bulk in");
2992 /* not set up yet, so do it now */
2993 edge_serial
->read_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2994 if (!edge_serial
->read_urb
) {
2995 err("out of memory");
2998 edge_serial
->bulk_in_buffer
= kmalloc(buffer_size
, GFP_KERNEL
);
2999 if (!edge_serial
->bulk_in_buffer
) {
3000 err ("out of memory");
3001 usb_free_urb(edge_serial
->read_urb
);
3004 edge_serial
->bulk_in_endpoint
= endpoint
->bEndpointAddress
;
3006 /* set up our bulk in urb */
3007 usb_fill_bulk_urb(edge_serial
->read_urb
, dev
,
3008 usb_rcvbulkpipe(dev
, endpoint
->bEndpointAddress
),
3009 edge_serial
->bulk_in_buffer
,
3010 endpoint
->wMaxPacketSize
,
3011 edge_bulk_in_callback
,
3013 bulk_in_found
= true;
3016 if (!bulk_out_found
&&
3017 (usb_endpoint_is_bulk_out(endpoint
))) {
3018 /* we found a bulk out endpoint */
3019 dbg("found bulk out");
3020 edge_serial
->bulk_out_endpoint
= endpoint
->bEndpointAddress
;
3021 bulk_out_found
= true;
3025 if (!interrupt_in_found
|| !bulk_in_found
|| !bulk_out_found
) {
3026 err ("Error - the proper endpoints were not found!");
3030 /* start interrupt read for this edgeport this interrupt will
3031 * continue as long as the edgeport is connected */
3032 response
= usb_submit_urb(edge_serial
->interrupt_read_urb
, GFP_KERNEL
);
3034 err("%s - Error %d submitting control urb", __FUNCTION__
, response
);
3040 /****************************************************************************
3042 * This function is called whenever the device is removed from the usb bus.
3043 ****************************************************************************/
3044 static void edge_shutdown (struct usb_serial
*serial
)
3046 struct edgeport_serial
*edge_serial
= usb_get_serial_data(serial
);
3049 dbg("%s", __FUNCTION__
);
3051 /* stop reads and writes on all ports */
3052 for (i
=0; i
< serial
->num_ports
; ++i
) {
3053 kfree (usb_get_serial_port_data(serial
->port
[i
]));
3054 usb_set_serial_port_data(serial
->port
[i
], NULL
);
3056 /* free up our endpoint stuff */
3057 if (edge_serial
->is_epic
) {
3058 usb_kill_urb(edge_serial
->interrupt_read_urb
);
3059 usb_free_urb(edge_serial
->interrupt_read_urb
);
3060 kfree(edge_serial
->interrupt_in_buffer
);
3062 usb_kill_urb(edge_serial
->read_urb
);
3063 usb_free_urb(edge_serial
->read_urb
);
3064 kfree(edge_serial
->bulk_in_buffer
);
3068 usb_set_serial_data(serial
, NULL
);
3072 /****************************************************************************
3074 * This is called by the module subsystem, or on startup to initialize us
3075 ****************************************************************************/
3076 static int __init
edgeport_init(void)
3080 retval
= usb_serial_register(&edgeport_2port_device
);
3082 goto failed_2port_device_register
;
3083 retval
= usb_serial_register(&edgeport_4port_device
);
3085 goto failed_4port_device_register
;
3086 retval
= usb_serial_register(&edgeport_8port_device
);
3088 goto failed_8port_device_register
;
3089 retval
= usb_serial_register(&epic_device
);
3091 goto failed_epic_device_register
;
3092 retval
= usb_register(&io_driver
);
3094 goto failed_usb_register
;
3095 atomic_set(&CmdUrbs
, 0);
3096 info(DRIVER_DESC
" " DRIVER_VERSION
);
3099 failed_usb_register
:
3100 usb_serial_deregister(&epic_device
);
3101 failed_epic_device_register
:
3102 usb_serial_deregister(&edgeport_8port_device
);
3103 failed_8port_device_register
:
3104 usb_serial_deregister(&edgeport_4port_device
);
3105 failed_4port_device_register
:
3106 usb_serial_deregister(&edgeport_2port_device
);
3107 failed_2port_device_register
:
3112 /****************************************************************************
3114 * Called when the driver is about to be unloaded.
3115 ****************************************************************************/
3116 static void __exit
edgeport_exit (void)
3118 usb_deregister (&io_driver
);
3119 usb_serial_deregister (&edgeport_2port_device
);
3120 usb_serial_deregister (&edgeport_4port_device
);
3121 usb_serial_deregister (&edgeport_8port_device
);
3122 usb_serial_deregister (&epic_device
);
3125 module_init(edgeport_init
);
3126 module_exit(edgeport_exit
);
3128 /* Module information */
3129 MODULE_AUTHOR( DRIVER_AUTHOR
);
3130 MODULE_DESCRIPTION( DRIVER_DESC
);
3131 MODULE_LICENSE("GPL");
3133 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
3134 MODULE_PARM_DESC(debug
, "Debug enabled or not");
3136 module_param(low_latency
, bool, S_IRUGO
| S_IWUSR
);
3137 MODULE_PARM_DESC(low_latency
, "Low latency enabled or not");