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 char 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 char 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 */
150 __u8 interrupt_in_endpoint
; /* the interrupt endpoint handle */
151 unsigned char * interrupt_in_buffer
; /* the buffer we use for the interrupt endpoint */
152 struct urb
* interrupt_read_urb
; /* our interrupt urb */
154 __u8 bulk_in_endpoint
; /* the bulk in endpoint handle */
155 unsigned char * bulk_in_buffer
; /* the buffer we use for the bulk in endpoint */
156 struct urb
* read_urb
; /* our bulk read urb */
157 int read_in_progress
;
160 __u8 bulk_out_endpoint
; /* the bulk out endpoint handle */
162 __s16 rxBytesAvail
; /* the number of bytes that we need to read from this device */
164 enum RXSTATE rxState
; /* the current state of the bulk receive processor */
165 __u8 rxHeader1
; /* receive header byte 1 */
166 __u8 rxHeader2
; /* receive header byte 2 */
167 __u8 rxHeader3
; /* receive header byte 3 */
168 __u8 rxPort
; /* the port that we are currently receiving data for */
169 __u8 rxStatusCode
; /* the receive status code */
170 __u8 rxStatusParam
; /* the receive status paramater */
171 __s16 rxBytesRemaining
; /* the number of port bytes left to read */
172 struct usb_serial
*serial
; /* loop back to the owner of this object */
175 /* baud rate information */
176 struct divisor_table_entry
{
182 // Define table of divisors for Rev A EdgePort/4 hardware
183 // These assume a 3.6864MHz crystal, the standard /16, and
186 static const struct divisor_table_entry divisor_table
[] = {
189 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
190 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
208 /* local variables */
211 static int low_latency
= 1; /* tty low latency flag, on by default */
213 static int CmdUrbs
= 0; /* Number of outstanding Command Write Urbs */
216 /* local function prototypes */
218 /* function prototypes for all URB callbacks */
219 static void edge_interrupt_callback (struct urb
*urb
);
220 static void edge_bulk_in_callback (struct urb
*urb
);
221 static void edge_bulk_out_data_callback (struct urb
*urb
);
222 static void edge_bulk_out_cmd_callback (struct urb
*urb
);
224 /* function prototypes for the usbserial callbacks */
225 static int edge_open (struct usb_serial_port
*port
, struct file
*filp
);
226 static void edge_close (struct usb_serial_port
*port
, struct file
*filp
);
227 static int edge_write (struct usb_serial_port
*port
, const unsigned char *buf
, int count
);
228 static int edge_write_room (struct usb_serial_port
*port
);
229 static int edge_chars_in_buffer (struct usb_serial_port
*port
);
230 static void edge_throttle (struct usb_serial_port
*port
);
231 static void edge_unthrottle (struct usb_serial_port
*port
);
232 static void edge_set_termios (struct usb_serial_port
*port
, struct ktermios
*old_termios
);
233 static int edge_ioctl (struct usb_serial_port
*port
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
234 static void edge_break (struct usb_serial_port
*port
, int break_state
);
235 static int edge_tiocmget (struct usb_serial_port
*port
, struct file
*file
);
236 static int edge_tiocmset (struct usb_serial_port
*port
, struct file
*file
, unsigned int set
, unsigned int clear
);
237 static int edge_startup (struct usb_serial
*serial
);
238 static void edge_shutdown (struct usb_serial
*serial
);
241 #include "io_tables.h" /* all of the devices that this driver supports */
243 static struct usb_driver io_driver
= {
244 .name
= "io_edgeport",
245 .probe
= usb_serial_probe
,
246 .disconnect
= usb_serial_disconnect
,
247 .id_table
= id_table_combined
,
251 /* function prototypes for all of our local functions */
252 static void process_rcvd_data (struct edgeport_serial
*edge_serial
, unsigned char *buffer
, __u16 bufferLength
);
253 static void process_rcvd_status (struct edgeport_serial
*edge_serial
, __u8 byte2
, __u8 byte3
);
254 static void edge_tty_recv (struct device
*dev
, struct tty_struct
*tty
, unsigned char *data
, int length
);
255 static void handle_new_msr (struct edgeport_port
*edge_port
, __u8 newMsr
);
256 static void handle_new_lsr (struct edgeport_port
*edge_port
, __u8 lsrData
, __u8 lsr
, __u8 data
);
257 static int send_iosp_ext_cmd (struct edgeport_port
*edge_port
, __u8 command
, __u8 param
);
258 static int calc_baud_rate_divisor (int baud_rate
, int *divisor
);
259 static int send_cmd_write_baud_rate (struct edgeport_port
*edge_port
, int baudRate
);
260 static void change_port_settings (struct edgeport_port
*edge_port
, struct ktermios
*old_termios
);
261 static int send_cmd_write_uart_register (struct edgeport_port
*edge_port
, __u8 regNum
, __u8 regValue
);
262 static int write_cmd_usb (struct edgeport_port
*edge_port
, unsigned char *buffer
, int writeLength
);
263 static void send_more_port_data (struct edgeport_serial
*edge_serial
, struct edgeport_port
*edge_port
);
265 static int sram_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
);
266 static int rom_read (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
);
267 static int rom_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
);
268 static void get_manufacturing_desc (struct edgeport_serial
*edge_serial
);
269 static void get_boot_desc (struct edgeport_serial
*edge_serial
);
270 static void load_application_firmware (struct edgeport_serial
*edge_serial
);
272 static void unicode_to_ascii(char *string
, int buflen
, __le16
*unicode
, int unicode_size
);
275 // ************************************************************************
276 // ************************************************************************
277 // ************************************************************************
278 // ************************************************************************
280 /************************************************************************
282 * update_edgeport_E2PROM() Compare current versions of *
283 * Boot ROM and Manufacture *
284 * Descriptors with versions *
285 * embedded in this driver *
287 ************************************************************************/
288 static void update_edgeport_E2PROM (struct edgeport_serial
*edge_serial
)
292 __u8 BootMajorVersion
;
293 __u8 BootMinorVersion
;
294 __le16 BootBuildNumber
;
297 struct edge_firmware_image_record
*record
;
298 unsigned char *firmware
;
302 switch (edge_serial
->product_info
.iDownloadFile
) {
303 case EDGE_DOWNLOAD_FILE_I930
:
304 BootMajorVersion
= BootCodeImageVersion_GEN1
.MajorVersion
;
305 BootMinorVersion
= BootCodeImageVersion_GEN1
.MinorVersion
;
306 BootBuildNumber
= cpu_to_le16(BootCodeImageVersion_GEN1
.BuildNumber
);
307 BootImage
= &BootCodeImage_GEN1
[0];
308 BootSize
= sizeof( BootCodeImage_GEN1
);
311 case EDGE_DOWNLOAD_FILE_80251
:
312 BootMajorVersion
= BootCodeImageVersion_GEN2
.MajorVersion
;
313 BootMinorVersion
= BootCodeImageVersion_GEN2
.MinorVersion
;
314 BootBuildNumber
= cpu_to_le16(BootCodeImageVersion_GEN2
.BuildNumber
);
315 BootImage
= &BootCodeImage_GEN2
[0];
316 BootSize
= sizeof( BootCodeImage_GEN2
);
323 // Check Boot Image Version
324 BootCurVer
= (edge_serial
->boot_descriptor
.MajorVersion
<< 24) +
325 (edge_serial
->boot_descriptor
.MinorVersion
<< 16) +
326 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
);
328 BootNewVer
= (BootMajorVersion
<< 24) +
329 (BootMinorVersion
<< 16) +
330 le16_to_cpu(BootBuildNumber
);
332 dbg("Current Boot Image version %d.%d.%d",
333 edge_serial
->boot_descriptor
.MajorVersion
,
334 edge_serial
->boot_descriptor
.MinorVersion
,
335 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
338 if (BootNewVer
> BootCurVer
) {
339 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
340 edge_serial
->boot_descriptor
.MajorVersion
,
341 edge_serial
->boot_descriptor
.MinorVersion
,
342 le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
),
345 le16_to_cpu(BootBuildNumber
));
348 dbg("Downloading new Boot Image");
350 firmware
= BootImage
;
353 record
= (struct edge_firmware_image_record
*)firmware
;
354 response
= rom_write (edge_serial
->serial
, le16_to_cpu(record
->ExtAddr
), le16_to_cpu(record
->Addr
), le16_to_cpu(record
->Len
), &record
->Data
[0]);
356 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
));
359 firmware
+= sizeof (struct edge_firmware_image_record
) + le16_to_cpu(record
->Len
);
360 if (firmware
>= &BootImage
[BootSize
]) {
365 dbg("Boot Image -- already up to date");
370 /************************************************************************
372 * Get string descriptor from device *
374 ************************************************************************/
375 static int get_string (struct usb_device
*dev
, int Id
, char *string
, int buflen
)
377 struct usb_string_descriptor StringDesc
;
378 struct usb_string_descriptor
*pStringDesc
;
380 dbg("%s - USB String ID = %d", __FUNCTION__
, Id
);
382 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
, sizeof(StringDesc
))) {
386 pStringDesc
= kmalloc (StringDesc
.bLength
, GFP_KERNEL
);
392 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
, StringDesc
.bLength
)) {
397 unicode_to_ascii(string
, buflen
, pStringDesc
->wData
, pStringDesc
->bLength
/2);
400 return strlen(string
);
405 /************************************************************************
407 * Get string descriptor from device
409 ************************************************************************/
410 static int get_string_desc (struct usb_device
*dev
, int Id
, struct usb_string_descriptor
**pRetDesc
)
412 struct usb_string_descriptor StringDesc
;
413 struct usb_string_descriptor
*pStringDesc
;
415 dbg("%s - USB String ID = %d", __FUNCTION__
, Id
);
417 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, &StringDesc
, sizeof(StringDesc
))) {
421 pStringDesc
= kmalloc (StringDesc
.bLength
, GFP_KERNEL
);
427 if (!usb_get_descriptor(dev
, USB_DT_STRING
, Id
, pStringDesc
, StringDesc
.bLength
)) {
432 *pRetDesc
= pStringDesc
;
437 static void get_product_info(struct edgeport_serial
*edge_serial
)
439 struct edgeport_product_info
*product_info
= &edge_serial
->product_info
;
441 memset (product_info
, 0, sizeof(struct edgeport_product_info
));
443 product_info
->ProductId
= (__u16
)(le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ~ION_DEVICE_ID_80251_NETCHIP
);
444 product_info
->NumPorts
= edge_serial
->manuf_descriptor
.NumPorts
;
445 product_info
->ProdInfoVer
= 0;
447 product_info
->RomSize
= edge_serial
->manuf_descriptor
.RomSize
;
448 product_info
->RamSize
= edge_serial
->manuf_descriptor
.RamSize
;
449 product_info
->CpuRev
= edge_serial
->manuf_descriptor
.CpuRev
;
450 product_info
->BoardRev
= edge_serial
->manuf_descriptor
.BoardRev
;
452 product_info
->BootMajorVersion
= edge_serial
->boot_descriptor
.MajorVersion
;
453 product_info
->BootMinorVersion
= edge_serial
->boot_descriptor
.MinorVersion
;
454 product_info
->BootBuildNumber
= edge_serial
->boot_descriptor
.BuildNumber
;
456 memcpy(product_info
->ManufactureDescDate
, edge_serial
->manuf_descriptor
.DescDate
, sizeof(edge_serial
->manuf_descriptor
.DescDate
));
458 // check if this is 2nd generation hardware
459 if (le16_to_cpu(edge_serial
->serial
->dev
->descriptor
.idProduct
) & ION_DEVICE_ID_80251_NETCHIP
) {
460 product_info
->FirmwareMajorVersion
= OperationalCodeImageVersion_GEN2
.MajorVersion
;
461 product_info
->FirmwareMinorVersion
= OperationalCodeImageVersion_GEN2
.MinorVersion
;
462 product_info
->FirmwareBuildNumber
= cpu_to_le16(OperationalCodeImageVersion_GEN2
.BuildNumber
);
463 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_80251
;
465 product_info
->FirmwareMajorVersion
= OperationalCodeImageVersion_GEN1
.MajorVersion
;
466 product_info
->FirmwareMinorVersion
= OperationalCodeImageVersion_GEN1
.MinorVersion
;
467 product_info
->FirmwareBuildNumber
= cpu_to_le16(OperationalCodeImageVersion_GEN1
.BuildNumber
);
468 product_info
->iDownloadFile
= EDGE_DOWNLOAD_FILE_I930
;
471 // Determine Product type and set appropriate flags
472 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info
->ProductId
)) {
473 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE
:
474 case ION_DEVICE_ID_EDGEPORT_4T
:
475 case ION_DEVICE_ID_EDGEPORT_4
:
476 case ION_DEVICE_ID_EDGEPORT_2
:
477 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU
:
478 case ION_DEVICE_ID_EDGEPORT_8
:
479 case ION_DEVICE_ID_EDGEPORT_421
:
480 case ION_DEVICE_ID_EDGEPORT_21
:
481 case ION_DEVICE_ID_EDGEPORT_2_DIN
:
482 case ION_DEVICE_ID_EDGEPORT_4_DIN
:
483 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU
:
484 product_info
->IsRS232
= 1;
487 case ION_DEVICE_ID_EDGEPORT_2I
: // Edgeport/2 RS422/RS485
488 product_info
->IsRS422
= 1;
489 product_info
->IsRS485
= 1;
492 case ION_DEVICE_ID_EDGEPORT_8I
: // Edgeport/4 RS422
493 case ION_DEVICE_ID_EDGEPORT_4I
: // Edgeport/4 RS422
494 product_info
->IsRS422
= 1;
498 // Dump Product Info structure
499 dbg("**Product Information:");
500 dbg(" ProductId %x", product_info
->ProductId
);
501 dbg(" NumPorts %d", product_info
->NumPorts
);
502 dbg(" ProdInfoVer %d", product_info
->ProdInfoVer
);
503 dbg(" IsServer %d", product_info
->IsServer
);
504 dbg(" IsRS232 %d", product_info
->IsRS232
);
505 dbg(" IsRS422 %d", product_info
->IsRS422
);
506 dbg(" IsRS485 %d", product_info
->IsRS485
);
507 dbg(" RomSize %d", product_info
->RomSize
);
508 dbg(" RamSize %d", product_info
->RamSize
);
509 dbg(" CpuRev %x", product_info
->CpuRev
);
510 dbg(" BoardRev %x", product_info
->BoardRev
);
511 dbg(" BootMajorVersion %d.%d.%d", product_info
->BootMajorVersion
,
512 product_info
->BootMinorVersion
,
513 le16_to_cpu(product_info
->BootBuildNumber
));
514 dbg(" FirmwareMajorVersion %d.%d.%d", product_info
->FirmwareMajorVersion
,
515 product_info
->FirmwareMinorVersion
,
516 le16_to_cpu(product_info
->FirmwareBuildNumber
));
517 dbg(" ManufactureDescDate %d/%d/%d", product_info
->ManufactureDescDate
[0],
518 product_info
->ManufactureDescDate
[1],
519 product_info
->ManufactureDescDate
[2]+1900);
520 dbg(" iDownloadFile 0x%x", product_info
->iDownloadFile
);
525 /************************************************************************/
526 /************************************************************************/
527 /* U S B C A L L B A C K F U N C T I O N S */
528 /* U S B C A L L B A C K F U N C T I O N S */
529 /************************************************************************/
530 /************************************************************************/
532 /*****************************************************************************
533 * edge_interrupt_callback
534 * this is the callback function for when we have received data on the
535 * interrupt endpoint.
536 *****************************************************************************/
537 static void edge_interrupt_callback (struct urb
*urb
)
539 struct edgeport_serial
*edge_serial
= (struct edgeport_serial
*)urb
->context
;
540 struct edgeport_port
*edge_port
;
541 struct usb_serial_port
*port
;
542 unsigned char *data
= urb
->transfer_buffer
;
543 int length
= urb
->actual_length
;
550 dbg("%s", __FUNCTION__
);
552 switch (urb
->status
) {
559 /* this urb is terminated, clean up */
560 dbg("%s - urb shutting down with status: %d", __FUNCTION__
, urb
->status
);
563 dbg("%s - nonzero urb status received: %d", __FUNCTION__
, urb
->status
);
567 // process this interrupt-read even if there are no ports open
569 usb_serial_debug_data(debug
, &edge_serial
->serial
->dev
->dev
, __FUNCTION__
, length
, data
);
572 bytes_avail
= data
[0] | (data
[1] << 8);
574 spin_lock(&edge_serial
->es_lock
);
575 edge_serial
->rxBytesAvail
+= bytes_avail
;
576 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__
, bytes_avail
, edge_serial
->rxBytesAvail
, edge_serial
->read_in_progress
);
578 if (edge_serial
->rxBytesAvail
> 0 &&
579 !edge_serial
->read_in_progress
) {
580 dbg("%s - posting a read", __FUNCTION__
);
581 edge_serial
->read_in_progress
= TRUE
;
583 /* we have pending bytes on the bulk in pipe, send a request */
584 edge_serial
->read_urb
->dev
= edge_serial
->serial
->dev
;
585 result
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
587 dev_err(&edge_serial
->serial
->dev
->dev
, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__
, result
);
588 edge_serial
->read_in_progress
= FALSE
;
591 spin_unlock(&edge_serial
->es_lock
);
594 /* grab the txcredits for the ports if available */
597 while ((position
< length
) && (portNumber
< edge_serial
->serial
->num_ports
)) {
598 txCredits
= data
[position
] | (data
[position
+1] << 8);
600 port
= edge_serial
->serial
->port
[portNumber
];
601 edge_port
= usb_get_serial_port_data(port
);
602 if (edge_port
->open
) {
603 spin_lock(&edge_port
->ep_lock
);
604 edge_port
->txCredits
+= txCredits
;
605 spin_unlock(&edge_port
->ep_lock
);
606 dbg("%s - txcredits for port%d = %d", __FUNCTION__
, portNumber
, edge_port
->txCredits
);
608 /* tell the tty driver that something has changed */
609 if (edge_port
->port
->tty
)
610 tty_wakeup(edge_port
->port
->tty
);
612 // Since we have more credit, check if more data can be sent
613 send_more_port_data(edge_serial
, edge_port
);
622 result
= usb_submit_urb (urb
, GFP_ATOMIC
);
624 dev_err(&urb
->dev
->dev
, "%s - Error %d submitting control urb\n", __FUNCTION__
, result
);
629 /*****************************************************************************
630 * edge_bulk_in_callback
631 * this is the callback function for when we have received data on the
633 *****************************************************************************/
634 static void edge_bulk_in_callback (struct urb
*urb
)
636 struct edgeport_serial
*edge_serial
= (struct edgeport_serial
*)urb
->context
;
637 unsigned char *data
= urb
->transfer_buffer
;
639 __u16 raw_data_length
;
641 dbg("%s", __FUNCTION__
);
644 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__
, urb
->status
);
645 edge_serial
->read_in_progress
= FALSE
;
649 if (urb
->actual_length
== 0) {
650 dbg("%s - read bulk callback with no data", __FUNCTION__
);
651 edge_serial
->read_in_progress
= FALSE
;
655 raw_data_length
= urb
->actual_length
;
657 usb_serial_debug_data(debug
, &edge_serial
->serial
->dev
->dev
, __FUNCTION__
, raw_data_length
, data
);
659 spin_lock(&edge_serial
->es_lock
);
661 /* decrement our rxBytes available by the number that we just got */
662 edge_serial
->rxBytesAvail
-= raw_data_length
;
664 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__
, raw_data_length
, edge_serial
->rxBytesAvail
);
666 process_rcvd_data (edge_serial
, data
, urb
->actual_length
);
668 /* check to see if there's any more data for us to read */
669 if (edge_serial
->rxBytesAvail
> 0) {
670 dbg("%s - posting a read", __FUNCTION__
);
671 edge_serial
->read_urb
->dev
= edge_serial
->serial
->dev
;
672 status
= usb_submit_urb(edge_serial
->read_urb
, GFP_ATOMIC
);
674 dev_err(&urb
->dev
->dev
, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__
, status
);
675 edge_serial
->read_in_progress
= FALSE
;
678 edge_serial
->read_in_progress
= FALSE
;
681 spin_unlock(&edge_serial
->es_lock
);
685 /*****************************************************************************
686 * edge_bulk_out_data_callback
687 * this is the callback function for when we have finished sending serial data
688 * on the bulk out endpoint.
689 *****************************************************************************/
690 static void edge_bulk_out_data_callback (struct urb
*urb
)
692 struct edgeport_port
*edge_port
= (struct edgeport_port
*)urb
->context
;
693 struct tty_struct
*tty
;
695 dbg("%s", __FUNCTION__
);
698 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__
, urb
->status
);
701 tty
= edge_port
->port
->tty
;
703 if (tty
&& edge_port
->open
) {
704 /* let the tty driver wakeup if it has a special write_wakeup function */
708 // Release the Write URB
709 edge_port
->write_in_progress
= FALSE
;
711 // Check if more data needs to be sent
712 send_more_port_data((struct edgeport_serial
*)(usb_get_serial_data(edge_port
->port
->serial
)), edge_port
);
716 /*****************************************************************************
718 * this is the callback function for when we have finished sending a command
719 * on the bulk out endpoint.
720 *****************************************************************************/
721 static void edge_bulk_out_cmd_callback (struct urb
*urb
)
723 struct edgeport_port
*edge_port
= (struct edgeport_port
*)urb
->context
;
724 struct tty_struct
*tty
;
725 int status
= urb
->status
;
727 dbg("%s", __FUNCTION__
);
730 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__
, urb
, CmdUrbs
);
733 /* clean up the transfer buffer */
734 kfree(urb
->transfer_buffer
);
736 /* Free the command urb */
740 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__
, status
);
744 /* Get pointer to tty */
745 tty
= edge_port
->port
->tty
;
747 /* tell the tty driver that something has changed */
748 if (tty
&& edge_port
->open
)
751 /* we have completed the command */
752 edge_port
->commandPending
= FALSE
;
753 wake_up(&edge_port
->wait_command
);
757 /*****************************************************************************
758 * Driver tty interface functions
759 *****************************************************************************/
761 /*****************************************************************************
763 * this function is called by the tty driver when a port is opened
764 * If successful, we return 0
765 * Otherwise we return a negative error number.
766 *****************************************************************************/
767 static int edge_open (struct usb_serial_port
*port
, struct file
* filp
)
769 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
770 struct usb_serial
*serial
;
771 struct edgeport_serial
*edge_serial
;
774 dbg("%s - port %d", __FUNCTION__
, port
->number
);
776 if (edge_port
== NULL
)
780 port
->tty
->low_latency
= low_latency
;
782 /* see if we've set up our endpoint info yet (can't set it up in edge_startup
783 as the structures were not set up at that time.) */
784 serial
= port
->serial
;
785 edge_serial
= usb_get_serial_data(serial
);
786 if (edge_serial
== NULL
) {
789 if (edge_serial
->interrupt_in_buffer
== NULL
) {
790 struct usb_serial_port
*port0
= serial
->port
[0];
792 /* not set up yet, so do it now */
793 edge_serial
->interrupt_in_buffer
= port0
->interrupt_in_buffer
;
794 edge_serial
->interrupt_in_endpoint
= port0
->interrupt_in_endpointAddress
;
795 edge_serial
->interrupt_read_urb
= port0
->interrupt_in_urb
;
796 edge_serial
->bulk_in_buffer
= port0
->bulk_in_buffer
;
797 edge_serial
->bulk_in_endpoint
= port0
->bulk_in_endpointAddress
;
798 edge_serial
->read_urb
= port0
->read_urb
;
799 edge_serial
->bulk_out_endpoint
= port0
->bulk_out_endpointAddress
;
801 /* set up our interrupt urb */
802 usb_fill_int_urb(edge_serial
->interrupt_read_urb
,
804 usb_rcvintpipe(serial
->dev
,
805 port0
->interrupt_in_endpointAddress
),
806 port0
->interrupt_in_buffer
,
807 edge_serial
->interrupt_read_urb
->transfer_buffer_length
,
808 edge_interrupt_callback
, edge_serial
,
809 edge_serial
->interrupt_read_urb
->interval
);
811 /* set up our bulk in urb */
812 usb_fill_bulk_urb(edge_serial
->read_urb
, serial
->dev
,
813 usb_rcvbulkpipe(serial
->dev
,
814 port0
->bulk_in_endpointAddress
),
815 port0
->bulk_in_buffer
,
816 edge_serial
->read_urb
->transfer_buffer_length
,
817 edge_bulk_in_callback
, edge_serial
);
818 edge_serial
->read_in_progress
= FALSE
;
820 /* start interrupt read for this edgeport
821 * this interrupt will continue as long as the edgeport is connected */
822 response
= usb_submit_urb (edge_serial
->interrupt_read_urb
, GFP_KERNEL
);
824 dev_err(&port
->dev
, "%s - Error %d submitting control urb\n", __FUNCTION__
, response
);
828 /* initialize our wait queues */
829 init_waitqueue_head(&edge_port
->wait_open
);
830 init_waitqueue_head(&edge_port
->wait_chase
);
831 init_waitqueue_head(&edge_port
->delta_msr_wait
);
832 init_waitqueue_head(&edge_port
->wait_command
);
834 /* initialize our icount structure */
835 memset (&(edge_port
->icount
), 0x00, sizeof(edge_port
->icount
));
837 /* initialize our port settings */
838 edge_port
->txCredits
= 0; /* Can't send any data yet */
839 edge_port
->shadowMCR
= MCR_MASTER_IE
; /* Must always set this bit to enable ints! */
840 edge_port
->chaseResponsePending
= FALSE
;
842 /* send a open port command */
843 edge_port
->openPending
= TRUE
;
844 edge_port
->open
= FALSE
;
845 response
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_OPEN_PORT
, 0);
848 dev_err(&port
->dev
, "%s - error sending open port command\n", __FUNCTION__
);
849 edge_port
->openPending
= FALSE
;
853 /* now wait for the port to be completely opened */
854 wait_event_timeout(edge_port
->wait_open
, (edge_port
->openPending
!= TRUE
), OPEN_TIMEOUT
);
856 if (edge_port
->open
== FALSE
) {
858 dbg("%s - open timedout", __FUNCTION__
);
859 edge_port
->openPending
= FALSE
;
863 /* create the txfifo */
864 edge_port
->txfifo
.head
= 0;
865 edge_port
->txfifo
.tail
= 0;
866 edge_port
->txfifo
.count
= 0;
867 edge_port
->txfifo
.size
= edge_port
->maxTxCredits
;
868 edge_port
->txfifo
.fifo
= kmalloc (edge_port
->maxTxCredits
, GFP_KERNEL
);
870 if (!edge_port
->txfifo
.fifo
) {
871 dbg("%s - no memory", __FUNCTION__
);
872 edge_close (port
, filp
);
876 /* Allocate a URB for the write */
877 edge_port
->write_urb
= usb_alloc_urb (0, GFP_KERNEL
);
878 edge_port
->write_in_progress
= FALSE
;
880 if (!edge_port
->write_urb
) {
881 dbg("%s - no memory", __FUNCTION__
);
882 edge_close (port
, filp
);
886 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__
, port
->number
, edge_port
->maxTxCredits
);
888 dbg("%s exited", __FUNCTION__
);
894 /************************************************************************
896 * block_until_chase_response
898 * This function will block the close until one of the following:
899 * 1. Response to our Chase comes from Edgeport
900 * 2. A timout of 10 seconds without activity has expired
901 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
903 ************************************************************************/
904 static void block_until_chase_response(struct edgeport_port
*edge_port
)
913 lastCredits
= edge_port
->txCredits
;
915 // Did we get our Chase response
916 if (edge_port
->chaseResponsePending
== FALSE
) {
917 dbg("%s - Got Chase Response", __FUNCTION__
);
919 // did we get all of our credit back?
920 if (edge_port
->txCredits
== edge_port
->maxTxCredits
) {
921 dbg("%s - Got all credits", __FUNCTION__
);
926 // Block the thread for a while
927 prepare_to_wait(&edge_port
->wait_chase
, &wait
, TASK_UNINTERRUPTIBLE
);
928 schedule_timeout(timeout
);
929 finish_wait(&edge_port
->wait_chase
, &wait
);
931 if (lastCredits
== edge_port
->txCredits
) {
932 // No activity.. count down.
935 edge_port
->chaseResponsePending
= FALSE
;
936 dbg("%s - Chase TIMEOUT", __FUNCTION__
);
940 // Reset timout value back to 10 seconds
941 dbg("%s - Last %d, Current %d", __FUNCTION__
, lastCredits
, edge_port
->txCredits
);
948 /************************************************************************
950 * block_until_tx_empty
952 * This function will block the close until one of the following:
954 * 2. The edgeport has stopped
955 * 3. A timout of 3 seconds without activity has expired
957 ************************************************************************/
958 static void block_until_tx_empty (struct edgeport_port
*edge_port
)
961 struct TxFifo
*fifo
= &edge_port
->txfifo
;
968 lastCount
= fifo
->count
;
970 // Is the Edgeport Buffer empty?
971 if (lastCount
== 0) {
972 dbg("%s - TX Buffer Empty", __FUNCTION__
);
976 // Block the thread for a while
977 prepare_to_wait (&edge_port
->wait_chase
, &wait
, TASK_UNINTERRUPTIBLE
);
978 schedule_timeout(timeout
);
979 finish_wait(&edge_port
->wait_chase
, &wait
);
981 dbg("%s wait", __FUNCTION__
);
983 if (lastCount
== fifo
->count
) {
984 // No activity.. count down.
987 dbg("%s - TIMEOUT", __FUNCTION__
);
991 // Reset timout value back to seconds
998 /*****************************************************************************
1000 * this function is called by the tty driver when a port is closed
1001 *****************************************************************************/
1002 static void edge_close (struct usb_serial_port
*port
, struct file
* filp
)
1004 struct edgeport_serial
*edge_serial
;
1005 struct edgeport_port
*edge_port
;
1008 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1010 edge_serial
= usb_get_serial_data(port
->serial
);
1011 edge_port
= usb_get_serial_port_data(port
);
1012 if ((edge_serial
== NULL
) || (edge_port
== NULL
))
1015 // block until tx is empty
1016 block_until_tx_empty(edge_port
);
1018 edge_port
->closePending
= TRUE
;
1020 /* flush and chase */
1021 edge_port
->chaseResponsePending
= TRUE
;
1023 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__
);
1024 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1026 // block until chase finished
1027 block_until_chase_response(edge_port
);
1029 edge_port
->chaseResponsePending
= FALSE
;
1032 /* close the port */
1033 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__
);
1034 send_iosp_ext_cmd (edge_port
, IOSP_CMD_CLOSE_PORT
, 0);
1036 //port->close = TRUE;
1037 edge_port
->closePending
= FALSE
;
1038 edge_port
->open
= FALSE
;
1039 edge_port
->openPending
= FALSE
;
1041 usb_kill_urb(edge_port
->write_urb
);
1043 if (edge_port
->write_urb
) {
1044 /* if this urb had a transfer buffer already (old transfer) free it */
1045 kfree(edge_port
->write_urb
->transfer_buffer
);
1046 usb_free_urb(edge_port
->write_urb
);
1047 edge_port
->write_urb
= NULL
;
1049 kfree(edge_port
->txfifo
.fifo
);
1050 edge_port
->txfifo
.fifo
= NULL
;
1052 dbg("%s exited", __FUNCTION__
);
1055 /*****************************************************************************
1057 * this function is called by the tty driver when data should be written to
1059 * If successful, we return the number of bytes written, otherwise we return
1060 * a negative error number.
1061 *****************************************************************************/
1062 static int edge_write (struct usb_serial_port
*port
, const unsigned char *data
, int count
)
1064 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1065 struct TxFifo
*fifo
;
1070 unsigned long flags
;
1072 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1074 if (edge_port
== NULL
)
1077 // get a pointer to the Tx fifo
1078 fifo
= &edge_port
->txfifo
;
1080 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1082 // calculate number of bytes to put in fifo
1083 copySize
= min ((unsigned int)count
, (edge_port
->txCredits
- fifo
->count
));
1085 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__
,
1086 port
->number
, count
, edge_port
->txCredits
- fifo
->count
, copySize
);
1088 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1089 if (copySize
== 0) {
1090 dbg("%s - copySize = Zero", __FUNCTION__
);
1095 // since we can never overflow the buffer we do not have to check for full condition
1097 // the copy is done is two parts -- first fill to the end of the buffer
1098 // then copy the reset from the start of the buffer
1100 bytesleft
= fifo
->size
- fifo
->head
;
1101 firsthalf
= min (bytesleft
, copySize
);
1102 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__
, firsthalf
, bytesleft
);
1104 /* now copy our data */
1105 memcpy(&fifo
->fifo
[fifo
->head
], data
, firsthalf
);
1106 usb_serial_debug_data(debug
, &port
->dev
, __FUNCTION__
, firsthalf
, &fifo
->fifo
[fifo
->head
]);
1108 // update the index and size
1109 fifo
->head
+= firsthalf
;
1110 fifo
->count
+= firsthalf
;
1113 if (fifo
->head
== fifo
->size
) {
1117 secondhalf
= copySize
-firsthalf
;
1120 dbg("%s - copy rest of data %d", __FUNCTION__
, secondhalf
);
1121 memcpy(&fifo
->fifo
[fifo
->head
], &data
[firsthalf
], secondhalf
);
1122 usb_serial_debug_data(debug
, &port
->dev
, __FUNCTION__
, secondhalf
, &fifo
->fifo
[fifo
->head
]);
1123 // update the index and size
1124 fifo
->count
+= secondhalf
;
1125 fifo
->head
+= secondhalf
;
1126 // No need to check for wrap since we can not get to end of fifo in this part
1130 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1132 send_more_port_data((struct edgeport_serial
*)usb_get_serial_data(port
->serial
), edge_port
);
1134 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__
, copySize
, edge_port
->txCredits
, fifo
->count
);
1140 /************************************************************************
1142 * send_more_port_data()
1144 * This routine attempts to write additional UART transmit data
1145 * to a port over the USB bulk pipe. It is called (1) when new
1146 * data has been written to a port's TxBuffer from higher layers
1147 * (2) when the peripheral sends us additional TxCredits indicating
1148 * that it can accept more Tx data for a given port; and (3) when
1149 * a bulk write completes successfully and we want to see if we
1150 * can transmit more.
1152 ************************************************************************/
1153 static void send_more_port_data(struct edgeport_serial
*edge_serial
, struct edgeport_port
*edge_port
)
1155 struct TxFifo
*fifo
= &edge_port
->txfifo
;
1157 unsigned char *buffer
;
1163 unsigned long flags
;
1165 dbg("%s(%d)", __FUNCTION__
, edge_port
->port
->number
);
1167 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1169 if (edge_port
->write_in_progress
||
1171 (fifo
->count
== 0)) {
1172 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__
, edge_port
->port
->number
, fifo
->count
, edge_port
->write_in_progress
);
1176 // since the amount of data in the fifo will always fit into the
1177 // edgeport buffer we do not need to check the write length
1179 // Do we have enough credits for this port to make it worthwhile
1180 // to bother queueing a write. If it's too small, say a few bytes,
1181 // it's better to wait for more credits so we can do a larger
1183 if (edge_port
->txCredits
< EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port
->maxTxCredits
,EDGE_FW_BULK_MAX_PACKET_SIZE
)) {
1184 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__
, edge_port
->port
->number
, fifo
->count
, edge_port
->txCredits
);
1189 edge_port
->write_in_progress
= TRUE
;
1191 // get a pointer to the write_urb
1192 urb
= edge_port
->write_urb
;
1194 /* make sure transfer buffer is freed */
1195 kfree(urb
->transfer_buffer
);
1196 urb
->transfer_buffer
= NULL
;
1198 /* build the data header for the buffer and port that we are about to send out */
1199 count
= fifo
->count
;
1200 buffer
= kmalloc (count
+2, GFP_ATOMIC
);
1201 if (buffer
== NULL
) {
1202 dev_err(&edge_port
->port
->dev
, "%s - no more kernel memory...\n", __FUNCTION__
);
1203 edge_port
->write_in_progress
= FALSE
;
1206 buffer
[0] = IOSP_BUILD_DATA_HDR1 (edge_port
->port
->number
- edge_port
->port
->serial
->minor
, count
);
1207 buffer
[1] = IOSP_BUILD_DATA_HDR2 (edge_port
->port
->number
- edge_port
->port
->serial
->minor
, count
);
1209 /* now copy our data */
1210 bytesleft
= fifo
->size
- fifo
->tail
;
1211 firsthalf
= min (bytesleft
, count
);
1212 memcpy(&buffer
[2], &fifo
->fifo
[fifo
->tail
], firsthalf
);
1213 fifo
->tail
+= firsthalf
;
1214 fifo
->count
-= firsthalf
;
1215 if (fifo
->tail
== fifo
->size
) {
1219 secondhalf
= count
-firsthalf
;
1221 memcpy(&buffer
[2+firsthalf
], &fifo
->fifo
[fifo
->tail
], secondhalf
);
1222 fifo
->tail
+= secondhalf
;
1223 fifo
->count
-= secondhalf
;
1227 usb_serial_debug_data(debug
, &edge_port
->port
->dev
, __FUNCTION__
, count
, &buffer
[2]);
1229 /* fill up the urb with all of our data and submit it */
1230 usb_fill_bulk_urb (urb
, edge_serial
->serial
->dev
,
1231 usb_sndbulkpipe(edge_serial
->serial
->dev
, edge_serial
->bulk_out_endpoint
),
1232 buffer
, count
+2, edge_bulk_out_data_callback
, edge_port
);
1234 /* decrement the number of credits we have by the number we just sent */
1235 edge_port
->txCredits
-= count
;
1236 edge_port
->icount
.tx
+= count
;
1238 urb
->dev
= edge_serial
->serial
->dev
;
1239 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
1241 /* something went wrong */
1242 dev_err(&edge_port
->port
->dev
, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__
, status
);
1243 edge_port
->write_in_progress
= FALSE
;
1245 /* revert the credits as something bad happened. */
1246 edge_port
->txCredits
+= count
;
1247 edge_port
->icount
.tx
-= count
;
1249 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__
, count
, edge_port
->txCredits
, fifo
->count
);
1252 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1256 /*****************************************************************************
1258 * this function is called by the tty driver when it wants to know how many
1259 * bytes of data we can accept for a specific port.
1260 * If successful, we return the amount of room that we have for this port
1262 * Otherwise we return a negative error number.
1263 *****************************************************************************/
1264 static int edge_write_room (struct usb_serial_port
*port
)
1266 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1268 unsigned long flags
;
1270 dbg("%s", __FUNCTION__
);
1272 if (edge_port
== NULL
)
1274 if (edge_port
->closePending
== TRUE
)
1277 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1279 if (!edge_port
->open
) {
1280 dbg("%s - port not opened", __FUNCTION__
);
1284 // total of both buffers is still txCredit
1285 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1286 room
= edge_port
->txCredits
- edge_port
->txfifo
.count
;
1287 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1289 dbg("%s - returns %d", __FUNCTION__
, room
);
1294 /*****************************************************************************
1295 * edge_chars_in_buffer
1296 * this function is called by the tty driver when it wants to know how many
1297 * bytes of data we currently have outstanding in the port (data that has
1298 * been written, but hasn't made it out the port yet)
1299 * If successful, we return the number of bytes left to be written in the
1301 * Otherwise we return a negative error number.
1302 *****************************************************************************/
1303 static int edge_chars_in_buffer (struct usb_serial_port
*port
)
1305 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1307 unsigned long flags
;
1309 dbg("%s", __FUNCTION__
);
1311 if (edge_port
== NULL
)
1313 if (edge_port
->closePending
== TRUE
)
1316 if (!edge_port
->open
) {
1317 dbg("%s - port not opened", __FUNCTION__
);
1321 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1322 num_chars
= edge_port
->maxTxCredits
- edge_port
->txCredits
+ edge_port
->txfifo
.count
;
1323 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1325 dbg("%s(port %d) - returns %d", __FUNCTION__
, port
->number
, num_chars
);
1332 /*****************************************************************************
1334 * this function is called by the tty driver when it wants to stop the data
1335 * being read from the port.
1336 *****************************************************************************/
1337 static void edge_throttle (struct usb_serial_port
*port
)
1339 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1340 struct tty_struct
*tty
;
1343 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1345 if (edge_port
== NULL
)
1348 if (!edge_port
->open
) {
1349 dbg("%s - port not opened", __FUNCTION__
);
1355 dbg ("%s - no tty available", __FUNCTION__
);
1359 /* if we are implementing XON/XOFF, send the stop character */
1361 unsigned char stop_char
= STOP_CHAR(tty
);
1362 status
= edge_write (port
, &stop_char
, 1);
1368 /* if we are implementing RTS/CTS, toggle that line */
1369 if (tty
->termios
->c_cflag
& CRTSCTS
) {
1370 edge_port
->shadowMCR
&= ~MCR_RTS
;
1371 status
= send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1381 /*****************************************************************************
1383 * this function is called by the tty driver when it wants to resume the data
1384 * being read from the port (called after SerialThrottle is called)
1385 *****************************************************************************/
1386 static void edge_unthrottle (struct usb_serial_port
*port
)
1388 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1389 struct tty_struct
*tty
;
1392 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1394 if (edge_port
== NULL
)
1397 if (!edge_port
->open
) {
1398 dbg("%s - port not opened", __FUNCTION__
);
1404 dbg ("%s - no tty available", __FUNCTION__
);
1408 /* if we are implementing XON/XOFF, send the start character */
1410 unsigned char start_char
= START_CHAR(tty
);
1411 status
= edge_write (port
, &start_char
, 1);
1417 /* if we are implementing RTS/CTS, toggle that line */
1418 if (tty
->termios
->c_cflag
& CRTSCTS
) {
1419 edge_port
->shadowMCR
|= MCR_RTS
;
1420 status
= send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1430 /*****************************************************************************
1432 * this function is called by the tty driver when it wants to change the termios structure
1433 *****************************************************************************/
1434 static void edge_set_termios (struct usb_serial_port
*port
, struct ktermios
*old_termios
)
1436 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1437 struct tty_struct
*tty
= port
->tty
;
1440 if (!port
->tty
|| !port
->tty
->termios
) {
1441 dbg ("%s - no tty or termios", __FUNCTION__
);
1445 cflag
= tty
->termios
->c_cflag
;
1446 /* check that they really want us to change something */
1448 if (cflag
== old_termios
->c_cflag
&&
1449 tty
->termios
->c_iflag
== old_termios
->c_iflag
) {
1450 dbg("%s - nothing to change", __FUNCTION__
);
1455 dbg("%s - clfag %08x iflag %08x", __FUNCTION__
,
1456 tty
->termios
->c_cflag
, tty
->termios
->c_iflag
);
1458 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__
,
1459 old_termios
->c_cflag
, old_termios
->c_iflag
);
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__
);
1472 /* change the port settings to the new ones specified */
1473 change_port_settings (edge_port
, old_termios
);
1479 /*****************************************************************************
1480 * get_lsr_info - get line status register info
1482 * Purpose: Let user call ioctl() to get info when the UART physically
1483 * is emptied. On bus types like RS485, the transmitter must
1484 * release the bus after transmitting. This must be done when
1485 * the transmit shift register is empty, not be done when the
1486 * transmit holding register is empty. This functionality
1487 * allows an RS485 driver to be written in user space.
1488 *****************************************************************************/
1489 static int get_lsr_info(struct edgeport_port
*edge_port
, unsigned int __user
*value
)
1491 unsigned int result
= 0;
1492 unsigned long flags
;
1494 spin_lock_irqsave(&edge_port
->ep_lock
, flags
);
1495 if (edge_port
->maxTxCredits
== edge_port
->txCredits
&&
1496 edge_port
->txfifo
.count
== 0) {
1497 dbg("%s -- Empty", __FUNCTION__
);
1498 result
= TIOCSER_TEMT
;
1500 spin_unlock_irqrestore(&edge_port
->ep_lock
, flags
);
1502 if (copy_to_user(value
, &result
, sizeof(int)))
1507 static int get_number_bytes_avail(struct edgeport_port
*edge_port
, unsigned int __user
*value
)
1509 unsigned int result
= 0;
1510 struct tty_struct
*tty
= edge_port
->port
->tty
;
1513 return -ENOIOCTLCMD
;
1515 result
= tty
->read_cnt
;
1517 dbg("%s(%d) = %d", __FUNCTION__
, edge_port
->port
->number
, result
);
1518 if (copy_to_user(value
, &result
, sizeof(int)))
1521 return -ENOIOCTLCMD
;
1524 static int edge_tiocmset (struct usb_serial_port
*port
, struct file
*file
, unsigned int set
, unsigned int clear
)
1526 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1529 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1531 mcr
= edge_port
->shadowMCR
;
1532 if (set
& TIOCM_RTS
)
1534 if (set
& TIOCM_DTR
)
1536 if (set
& TIOCM_LOOP
)
1537 mcr
|= MCR_LOOPBACK
;
1539 if (clear
& TIOCM_RTS
)
1541 if (clear
& TIOCM_DTR
)
1543 if (clear
& TIOCM_LOOP
)
1544 mcr
&= ~MCR_LOOPBACK
;
1546 edge_port
->shadowMCR
= mcr
;
1548 send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
1553 static int edge_tiocmget(struct usb_serial_port
*port
, struct file
*file
)
1555 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1556 unsigned int result
= 0;
1560 dbg("%s - port %d", __FUNCTION__
, port
->number
);
1562 msr
= edge_port
->shadowMSR
;
1563 mcr
= edge_port
->shadowMCR
;
1564 result
= ((mcr
& MCR_DTR
) ? TIOCM_DTR
: 0) /* 0x002 */
1565 | ((mcr
& MCR_RTS
) ? TIOCM_RTS
: 0) /* 0x004 */
1566 | ((msr
& EDGEPORT_MSR_CTS
) ? TIOCM_CTS
: 0) /* 0x020 */
1567 | ((msr
& EDGEPORT_MSR_CD
) ? TIOCM_CAR
: 0) /* 0x040 */
1568 | ((msr
& EDGEPORT_MSR_RI
) ? TIOCM_RI
: 0) /* 0x080 */
1569 | ((msr
& EDGEPORT_MSR_DSR
) ? TIOCM_DSR
: 0); /* 0x100 */
1572 dbg("%s -- %x", __FUNCTION__
, result
);
1577 static int get_serial_info(struct edgeport_port
*edge_port
, struct serial_struct __user
*retinfo
)
1579 struct serial_struct tmp
;
1584 memset(&tmp
, 0, sizeof(tmp
));
1586 tmp
.type
= PORT_16550A
;
1587 tmp
.line
= edge_port
->port
->serial
->minor
;
1588 tmp
.port
= edge_port
->port
->number
;
1590 tmp
.flags
= ASYNC_SKIP_TEST
| ASYNC_AUTO_IRQ
;
1591 tmp
.xmit_fifo_size
= edge_port
->maxTxCredits
;
1592 tmp
.baud_base
= 9600;
1593 tmp
.close_delay
= 5*HZ
;
1594 tmp
.closing_wait
= 30*HZ
;
1595 // tmp.custom_divisor = state->custom_divisor;
1596 // tmp.hub6 = state->hub6;
1597 // tmp.io_type = state->io_type;
1599 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
1606 /*****************************************************************************
1608 * this function handles any ioctl calls to the driver
1609 *****************************************************************************/
1610 static int edge_ioctl (struct usb_serial_port
*port
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1613 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1614 struct async_icount cnow
;
1615 struct async_icount cprev
;
1616 struct serial_icounter_struct icount
;
1618 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__
, port
->number
, cmd
);
1621 // return number of bytes available
1623 dbg("%s (%d) TIOCINQ", __FUNCTION__
, port
->number
);
1624 return get_number_bytes_avail(edge_port
, (unsigned int __user
*) arg
);
1628 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__
, port
->number
);
1629 return get_lsr_info(edge_port
, (unsigned int __user
*) arg
);
1633 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__
, port
->number
);
1634 return get_serial_info(edge_port
, (struct serial_struct __user
*) arg
);
1637 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__
, port
->number
);
1641 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__
, port
->number
);
1642 cprev
= edge_port
->icount
;
1644 prepare_to_wait(&edge_port
->delta_msr_wait
, &wait
, TASK_INTERRUPTIBLE
);
1646 finish_wait(&edge_port
->delta_msr_wait
, &wait
);
1647 /* see if a signal did it */
1648 if (signal_pending(current
))
1649 return -ERESTARTSYS
;
1650 cnow
= edge_port
->icount
;
1651 if (cnow
.rng
== cprev
.rng
&& cnow
.dsr
== cprev
.dsr
&&
1652 cnow
.dcd
== cprev
.dcd
&& cnow
.cts
== cprev
.cts
)
1653 return -EIO
; /* no change => error */
1654 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1655 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1656 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
1657 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
)) ) {
1666 cnow
= edge_port
->icount
;
1667 memset(&icount
, 0, sizeof(icount
));
1668 icount
.cts
= cnow
.cts
;
1669 icount
.dsr
= cnow
.dsr
;
1670 icount
.rng
= cnow
.rng
;
1671 icount
.dcd
= cnow
.dcd
;
1672 icount
.rx
= cnow
.rx
;
1673 icount
.tx
= cnow
.tx
;
1674 icount
.frame
= cnow
.frame
;
1675 icount
.overrun
= cnow
.overrun
;
1676 icount
.parity
= cnow
.parity
;
1677 icount
.brk
= cnow
.brk
;
1678 icount
.buf_overrun
= cnow
.buf_overrun
;
1680 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__
, port
->number
, icount
.rx
, icount
.tx
);
1681 if (copy_to_user((void __user
*)arg
, &icount
, sizeof(icount
)))
1686 return -ENOIOCTLCMD
;
1690 /*****************************************************************************
1692 * this function sends a break to the port
1693 *****************************************************************************/
1694 static void edge_break (struct usb_serial_port
*port
, int break_state
)
1696 struct edgeport_port
*edge_port
= usb_get_serial_port_data(port
);
1699 /* flush and chase */
1700 edge_port
->chaseResponsePending
= TRUE
;
1702 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__
);
1703 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_CHASE_PORT
, 0);
1705 // block until chase finished
1706 block_until_chase_response(edge_port
);
1708 edge_port
->chaseResponsePending
= FALSE
;
1711 if (break_state
== -1) {
1712 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__
);
1713 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_SET_BREAK
, 0);
1715 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__
);
1716 status
= send_iosp_ext_cmd (edge_port
, IOSP_CMD_CLEAR_BREAK
, 0);
1719 dbg("%s - error sending break set/clear command.", __FUNCTION__
);
1726 /*****************************************************************************
1728 * this function handles the data received on the bulk in pipe.
1729 *****************************************************************************/
1730 static void process_rcvd_data (struct edgeport_serial
*edge_serial
, unsigned char * buffer
, __u16 bufferLength
)
1732 struct usb_serial_port
*port
;
1733 struct edgeport_port
*edge_port
;
1734 struct tty_struct
*tty
;
1735 __u16 lastBufferLength
;
1738 dbg("%s", __FUNCTION__
);
1740 lastBufferLength
= bufferLength
+ 1;
1742 while (bufferLength
> 0) {
1743 /* failsafe incase we get a message that we don't understand */
1744 if (lastBufferLength
== bufferLength
) {
1745 dbg("%s - stuck in loop, exiting it.", __FUNCTION__
);
1748 lastBufferLength
= bufferLength
;
1750 switch (edge_serial
->rxState
) {
1752 edge_serial
->rxHeader1
= *buffer
;
1756 if (bufferLength
== 0) {
1757 edge_serial
->rxState
= EXPECT_HDR2
;
1760 /* otherwise, drop on through */
1763 edge_serial
->rxHeader2
= *buffer
;
1767 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__
, edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1769 // Process depending on whether this header is
1772 if (IS_CMD_STAT_HDR(edge_serial
->rxHeader1
)) {
1773 // Decode this status header and goto EXPECT_HDR1 (if we
1774 // can process the status with only 2 bytes), or goto
1775 // EXPECT_HDR3 to get the third byte.
1777 edge_serial
->rxPort
= IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1778 edge_serial
->rxStatusCode
= IOSP_GET_STATUS_CODE(edge_serial
->rxHeader1
);
1780 if (!IOSP_STATUS_IS_2BYTE(edge_serial
->rxStatusCode
)) {
1781 // This status needs additional bytes. Save what we have
1782 // and then wait for more data.
1783 edge_serial
->rxStatusParam
= edge_serial
->rxHeader2
;
1785 edge_serial
->rxState
= EXPECT_HDR3
;
1789 // We have all the header bytes, process the status now
1790 process_rcvd_status (edge_serial
, edge_serial
->rxHeader2
, 0);
1791 edge_serial
->rxState
= EXPECT_HDR1
;
1794 edge_serial
->rxPort
= IOSP_GET_HDR_PORT(edge_serial
->rxHeader1
);
1795 edge_serial
->rxBytesRemaining
= IOSP_GET_HDR_DATA_LEN(edge_serial
->rxHeader1
, edge_serial
->rxHeader2
);
1797 dbg("%s - Data for Port %u Len %u", __FUNCTION__
, edge_serial
->rxPort
, edge_serial
->rxBytesRemaining
);
1799 //ASSERT( DevExt->RxPort < DevExt->NumPorts );
1800 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
1802 if (bufferLength
== 0 ) {
1803 edge_serial
->rxState
= EXPECT_DATA
;
1806 // Else, drop through
1809 case EXPECT_DATA
: // Expect data
1811 if (bufferLength
< edge_serial
->rxBytesRemaining
) {
1812 rxLen
= bufferLength
;
1813 edge_serial
->rxState
= EXPECT_DATA
; // Expect data to start next buffer
1815 // BufLen >= RxBytesRemaining
1816 rxLen
= edge_serial
->rxBytesRemaining
;
1817 edge_serial
->rxState
= EXPECT_HDR1
; // Start another header next time
1820 bufferLength
-= rxLen
;
1821 edge_serial
->rxBytesRemaining
-= rxLen
;
1823 /* spit this data back into the tty driver if this port is open */
1825 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1826 edge_port
= usb_get_serial_port_data(port
);
1827 if (edge_port
->open
) {
1828 tty
= edge_port
->port
->tty
;
1830 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__
, rxLen
, edge_serial
->rxPort
);
1831 edge_tty_recv(&edge_serial
->serial
->dev
->dev
, tty
, buffer
, rxLen
);
1833 edge_port
->icount
.rx
+= rxLen
;
1840 case EXPECT_HDR3
: // Expect 3rd byte of status header
1841 edge_serial
->rxHeader3
= *buffer
;
1845 // We have all the header bytes, process the status now
1846 process_rcvd_status (edge_serial
, edge_serial
->rxStatusParam
, edge_serial
->rxHeader3
);
1847 edge_serial
->rxState
= EXPECT_HDR1
;
1855 /*****************************************************************************
1856 * process_rcvd_status
1857 * this function handles the any status messages received on the bulk in pipe.
1858 *****************************************************************************/
1859 static void process_rcvd_status (struct edgeport_serial
*edge_serial
, __u8 byte2
, __u8 byte3
)
1861 struct usb_serial_port
*port
;
1862 struct edgeport_port
*edge_port
;
1863 __u8 code
= edge_serial
->rxStatusCode
;
1865 /* switch the port pointer to the one being currently talked about */
1866 port
= edge_serial
->serial
->port
[edge_serial
->rxPort
];
1867 edge_port
= usb_get_serial_port_data(port
);
1868 if (edge_port
== NULL
) {
1869 dev_err(&edge_serial
->serial
->dev
->dev
, "%s - edge_port == NULL for port %d\n", __FUNCTION__
, edge_serial
->rxPort
);
1873 dbg("%s - port %d", __FUNCTION__
, edge_serial
->rxPort
);
1875 if (code
== IOSP_EXT_STATUS
) {
1877 case IOSP_EXT_STATUS_CHASE_RSP
:
1878 // we want to do EXT status regardless of port open/closed
1879 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte3
);
1880 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
1881 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
1882 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
1883 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
1884 // like wait longer in block_until_chase_response, but for now we don't.
1885 edge_port
->chaseResponsePending
= FALSE
;
1886 wake_up (&edge_port
->wait_chase
);
1889 case IOSP_EXT_STATUS_RX_CHECK_RSP
:
1890 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__
, edge_serial
->rxPort
, byte3
);
1891 //Port->RxCheckRsp = TRUE;
1896 if (code
== IOSP_STATUS_OPEN_RSP
) {
1897 edge_port
->txCredits
= GET_TX_BUFFER_SIZE(byte3
);
1898 edge_port
->maxTxCredits
= edge_port
->txCredits
;
1899 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__
, edge_serial
->rxPort
, byte2
, edge_port
->txCredits
);
1900 handle_new_msr (edge_port
, byte2
);
1902 /* send the current line settings to the port so we are in sync with any further termios calls */
1903 if (edge_port
->port
->tty
)
1904 change_port_settings (edge_port
, edge_port
->port
->tty
->termios
);
1906 /* we have completed the open */
1907 edge_port
->openPending
= FALSE
;
1908 edge_port
->open
= TRUE
;
1909 wake_up(&edge_port
->wait_open
);
1913 // If port is closed, silently discard all rcvd status. We can
1914 // have cases where buffered status is received AFTER the close
1915 // port command is sent to the Edgeport.
1916 if ((!edge_port
->open
) || (edge_port
->closePending
)) {
1921 // Not currently sent by Edgeport
1922 case IOSP_STATUS_LSR
:
1923 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte2
);
1924 handle_new_lsr (edge_port
, FALSE
, byte2
, 0);
1927 case IOSP_STATUS_LSR_DATA
:
1928 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte2
, byte3
);
1929 // byte2 is LSR Register
1930 // byte3 is broken data byte
1931 handle_new_lsr (edge_port
, TRUE
, byte2
, byte3
);
1934 // case IOSP_EXT_4_STATUS:
1935 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
1938 case IOSP_STATUS_MSR
:
1939 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__
, edge_serial
->rxPort
, byte2
);
1941 // Process this new modem status and generate appropriate
1942 // events, etc, based on the new status. This routine
1943 // also saves the MSR in Port->ShadowMsr.
1944 handle_new_msr(edge_port
, byte2
);
1948 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__
, code
);
1956 /*****************************************************************************
1958 * this function passes data on to the tty flip buffer
1959 *****************************************************************************/
1960 static void edge_tty_recv(struct device
*dev
, struct tty_struct
*tty
, unsigned char *data
, int length
)
1965 cnt
= tty_buffer_request_room(tty
, length
);
1967 dev_err(dev
, "%s - dropping data, %d bytes lost\n",
1968 __FUNCTION__
, length
- cnt
);
1972 tty_insert_flip_string(tty
, data
, cnt
);
1975 } while (length
> 0);
1977 tty_flip_buffer_push(tty
);
1981 /*****************************************************************************
1983 * this function handles any change to the msr register for a port.
1984 *****************************************************************************/
1985 static void handle_new_msr(struct edgeport_port
*edge_port
, __u8 newMsr
)
1987 struct async_icount
*icount
;
1989 dbg("%s %02x", __FUNCTION__
, newMsr
);
1991 if (newMsr
& (EDGEPORT_MSR_DELTA_CTS
| EDGEPORT_MSR_DELTA_DSR
| EDGEPORT_MSR_DELTA_RI
| EDGEPORT_MSR_DELTA_CD
)) {
1992 icount
= &edge_port
->icount
;
1994 /* update input line counters */
1995 if (newMsr
& EDGEPORT_MSR_DELTA_CTS
) {
1998 if (newMsr
& EDGEPORT_MSR_DELTA_DSR
) {
2001 if (newMsr
& EDGEPORT_MSR_DELTA_CD
) {
2004 if (newMsr
& EDGEPORT_MSR_DELTA_RI
) {
2007 wake_up_interruptible(&edge_port
->delta_msr_wait
);
2010 /* Save the new modem status */
2011 edge_port
->shadowMSR
= newMsr
& 0xf0;
2017 /*****************************************************************************
2019 * this function handles any change to the lsr register for a port.
2020 *****************************************************************************/
2021 static void handle_new_lsr(struct edgeport_port
*edge_port
, __u8 lsrData
, __u8 lsr
, __u8 data
)
2023 __u8 newLsr
= (__u8
)(lsr
& (__u8
)(LSR_OVER_ERR
| LSR_PAR_ERR
| LSR_FRM_ERR
| LSR_BREAK
));
2024 struct async_icount
*icount
;
2026 dbg("%s - %02x", __FUNCTION__
, newLsr
);
2028 edge_port
->shadowLSR
= lsr
;
2030 if (newLsr
& LSR_BREAK
) {
2032 // Parity and Framing errors only count if they
2033 // occur exclusive of a break being
2036 newLsr
&= (__u8
)(LSR_OVER_ERR
| LSR_BREAK
);
2039 /* Place LSR data byte into Rx buffer */
2040 if (lsrData
&& edge_port
->port
->tty
)
2041 edge_tty_recv(&edge_port
->port
->dev
, edge_port
->port
->tty
, &data
, 1);
2043 /* update input line counters */
2044 icount
= &edge_port
->icount
;
2045 if (newLsr
& LSR_BREAK
) {
2048 if (newLsr
& LSR_OVER_ERR
) {
2051 if (newLsr
& LSR_PAR_ERR
) {
2054 if (newLsr
& LSR_FRM_ERR
) {
2062 /****************************************************************************
2064 * writes a number of bytes to the Edgeport device's sram starting at the
2066 * If successful returns the number of bytes written, otherwise it returns
2067 * a negative error number of the problem.
2068 ****************************************************************************/
2069 static int sram_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
)
2072 __u16 current_length
;
2073 unsigned char *transfer_buffer
;
2075 dbg("%s - %x, %x, %d", __FUNCTION__
, extAddr
, addr
, length
);
2077 transfer_buffer
= kmalloc (64, GFP_KERNEL
);
2078 if (!transfer_buffer
) {
2079 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 64);
2083 /* need to split these writes up into 64 byte chunks */
2085 while (length
> 0) {
2087 current_length
= 64;
2089 current_length
= length
;
2091 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2092 memcpy (transfer_buffer
, data
, current_length
);
2093 result
= usb_control_msg (serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0), USB_REQUEST_ION_WRITE_RAM
,
2094 0x40, addr
, extAddr
, transfer_buffer
, current_length
, 300);
2097 length
-= current_length
;
2098 addr
+= current_length
;
2099 data
+= current_length
;
2102 kfree (transfer_buffer
);
2107 /****************************************************************************
2109 * writes a number of bytes to the Edgeport device's ROM starting at the
2111 * If successful returns the number of bytes written, otherwise it returns
2112 * a negative error number of the problem.
2113 ****************************************************************************/
2114 static int rom_write (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
)
2117 __u16 current_length
;
2118 unsigned char *transfer_buffer
;
2120 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2122 transfer_buffer
= kmalloc (64, GFP_KERNEL
);
2123 if (!transfer_buffer
) {
2124 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 64);
2128 /* need to split these writes up into 64 byte chunks */
2130 while (length
> 0) {
2132 current_length
= 64;
2134 current_length
= length
;
2136 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2137 memcpy (transfer_buffer
, data
, current_length
);
2138 result
= usb_control_msg (serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0), USB_REQUEST_ION_WRITE_ROM
,
2139 0x40, addr
, extAddr
, transfer_buffer
, current_length
, 300);
2142 length
-= current_length
;
2143 addr
+= current_length
;
2144 data
+= current_length
;
2147 kfree (transfer_buffer
);
2152 /****************************************************************************
2154 * reads a number of bytes from the Edgeport device starting at the given
2156 * If successful returns the number of bytes read, otherwise it returns
2157 * a negative error number of the problem.
2158 ****************************************************************************/
2159 static int rom_read (struct usb_serial
*serial
, __u16 extAddr
, __u16 addr
, __u16 length
, __u8
*data
)
2162 __u16 current_length
;
2163 unsigned char *transfer_buffer
;
2165 dbg("%s - %x, %x, %d", __FUNCTION__
, extAddr
, addr
, length
);
2167 transfer_buffer
= kmalloc (64, GFP_KERNEL
);
2168 if (!transfer_buffer
) {
2169 dev_err(&serial
->dev
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 64);
2173 /* need to split these reads up into 64 byte chunks */
2175 while (length
> 0) {
2177 current_length
= 64;
2179 current_length
= length
;
2181 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2182 result
= usb_control_msg (serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0), USB_REQUEST_ION_READ_ROM
,
2183 0xC0, addr
, extAddr
, transfer_buffer
, current_length
, 300);
2186 memcpy (data
, transfer_buffer
, current_length
);
2187 length
-= current_length
;
2188 addr
+= current_length
;
2189 data
+= current_length
;
2192 kfree (transfer_buffer
);
2197 /****************************************************************************
2199 * Is used to send a IOSP message to the Edgeport device
2200 ****************************************************************************/
2201 static int send_iosp_ext_cmd (struct edgeport_port
*edge_port
, __u8 command
, __u8 param
)
2203 unsigned char *buffer
;
2204 unsigned char *currentCommand
;
2208 dbg("%s - %d, %d", __FUNCTION__
, command
, param
);
2210 buffer
= kmalloc (10, GFP_ATOMIC
);
2212 dev_err(&edge_port
->port
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 10);
2216 currentCommand
= buffer
;
2218 MAKE_CMD_EXT_CMD (¤tCommand
, &length
,
2219 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2222 status
= write_cmd_usb (edge_port
, buffer
, length
);
2224 /* something bad happened, let's free up the memory */
2232 /*****************************************************************************
2234 * this function writes the given buffer out to the bulk write endpoint.
2235 *****************************************************************************/
2236 static int write_cmd_usb (struct edgeport_port
*edge_port
, unsigned char *buffer
, int length
)
2238 struct edgeport_serial
*edge_serial
= usb_get_serial_data(edge_port
->port
->serial
);
2243 usb_serial_debug_data(debug
, &edge_port
->port
->dev
, __FUNCTION__
, length
, buffer
);
2245 /* Allocate our next urb */
2246 urb
= usb_alloc_urb (0, GFP_ATOMIC
);
2251 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__
, urb
, CmdUrbs
);
2253 usb_fill_bulk_urb (urb
, edge_serial
->serial
->dev
,
2254 usb_sndbulkpipe(edge_serial
->serial
->dev
, edge_serial
->bulk_out_endpoint
),
2255 buffer
, length
, edge_bulk_out_cmd_callback
, edge_port
);
2257 edge_port
->commandPending
= TRUE
;
2258 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
2261 /* something went wrong */
2262 dev_err(&edge_port
->port
->dev
, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__
, status
);
2269 // wait for command to finish
2270 timeout
= COMMAND_TIMEOUT
;
2272 wait_event (&edge_port
->wait_command
, (edge_port
->commandPending
== FALSE
));
2274 if (edge_port
->commandPending
== TRUE
) {
2275 /* command timed out */
2276 dbg("%s - command timed out", __FUNCTION__
);
2284 /*****************************************************************************
2285 * send_cmd_write_baud_rate
2286 * this function sends the proper command to change the baud rate of the
2288 *****************************************************************************/
2289 static int send_cmd_write_baud_rate (struct edgeport_port
*edge_port
, int baudRate
)
2291 unsigned char *cmdBuffer
;
2292 unsigned char *currCmd
;
2296 unsigned char number
= edge_port
->port
->number
- edge_port
->port
->serial
->minor
;
2298 dbg("%s - port = %d, baud = %d", __FUNCTION__
, edge_port
->port
->number
, baudRate
);
2300 status
= calc_baud_rate_divisor (baudRate
, &divisor
);
2302 dev_err(&edge_port
->port
->dev
, "%s - bad baud rate\n", __FUNCTION__
);
2306 // Alloc memory for the string of commands.
2307 cmdBuffer
= kmalloc (0x100, GFP_ATOMIC
);
2309 dev_err(&edge_port
->port
->dev
, "%s - kmalloc(%d) failed.\n", __FUNCTION__
, 0x100);
2312 currCmd
= cmdBuffer
;
2314 // Enable access to divisor latch
2315 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, LCR
, LCR_DL_ENABLE
);
2317 // Write the divisor itself
2318 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, DLL
, LOW8 (divisor
) );
2319 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, DLM
, HIGH8(divisor
) );
2321 // Restore original value to disable access to divisor latch
2322 MAKE_CMD_WRITE_REG( &currCmd
, &cmdLen
, number
, LCR
, edge_port
->shadowLCR
);
2324 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2326 /* something bad happened, let's free up the memory */
2334 /*****************************************************************************
2335 * calc_baud_rate_divisor
2336 * this function calculates the proper baud rate divisor for the specified
2338 *****************************************************************************/
2339 static int calc_baud_rate_divisor (int baudrate
, int *divisor
)
2345 dbg("%s - %d", __FUNCTION__
, baudrate
);
2347 for (i
= 0; i
< ARRAY_SIZE(divisor_table
); i
++) {
2348 if ( divisor_table
[i
].BaudRate
== baudrate
) {
2349 *divisor
= divisor_table
[i
].Divisor
;
2354 // We have tried all of the standard baud rates
2355 // lets try to calculate the divisor for this baud rate
2356 // Make sure the baud rate is reasonable
2357 if (baudrate
> 50 && baudrate
< 230400) {
2359 custom
= (__u16
)((230400L + baudrate
/2) / baudrate
);
2363 dbg("%s - Baud %d = %d\n", __FUNCTION__
, baudrate
, custom
);
2371 /*****************************************************************************
2372 * send_cmd_write_uart_register
2373 * this function builds up a uart register message and sends to to the device.
2374 *****************************************************************************/
2375 static int send_cmd_write_uart_register (struct edgeport_port
*edge_port
, __u8 regNum
, __u8 regValue
)
2377 unsigned char *cmdBuffer
;
2378 unsigned char *currCmd
;
2379 unsigned long cmdLen
= 0;
2382 dbg("%s - write to %s register 0x%02x", (regNum
== MCR
) ? "MCR" : "LCR", __FUNCTION__
, regValue
);
2384 // Alloc memory for the string of commands.
2385 cmdBuffer
= kmalloc (0x10, GFP_ATOMIC
);
2386 if (cmdBuffer
== NULL
) {
2390 currCmd
= cmdBuffer
;
2392 // Build a cmd in the buffer to write the given register
2393 MAKE_CMD_WRITE_REG (&currCmd
, &cmdLen
,
2394 edge_port
->port
->number
- edge_port
->port
->serial
->minor
,
2397 status
= write_cmd_usb(edge_port
, cmdBuffer
, cmdLen
);
2399 /* something bad happened, let's free up the memory */
2407 /*****************************************************************************
2408 * change_port_settings
2409 * This routine is called to set the UART on the device to match the specified
2411 *****************************************************************************/
2415 static void change_port_settings (struct edgeport_port
*edge_port
, struct ktermios
*old_termios
)
2417 struct tty_struct
*tty
;
2428 dbg("%s - port %d", __FUNCTION__
, edge_port
->port
->number
);
2430 if ((!edge_port
->open
) &&
2431 (!edge_port
->openPending
)) {
2432 dbg("%s - port not opened", __FUNCTION__
);
2436 tty
= edge_port
->port
->tty
;
2439 dbg("%s - no tty structures", __FUNCTION__
);
2443 cflag
= tty
->termios
->c_cflag
;
2445 switch (cflag
& CSIZE
) {
2446 case CS5
: lData
= LCR_BITS_5
; mask
= 0x1f; dbg("%s - data bits = 5", __FUNCTION__
); break;
2447 case CS6
: lData
= LCR_BITS_6
; mask
= 0x3f; dbg("%s - data bits = 6", __FUNCTION__
); break;
2448 case CS7
: lData
= LCR_BITS_7
; mask
= 0x7f; dbg("%s - data bits = 7", __FUNCTION__
); break;
2450 case CS8
: lData
= LCR_BITS_8
; dbg("%s - data bits = 8", __FUNCTION__
); break;
2453 lParity
= LCR_PAR_NONE
;
2454 if (cflag
& PARENB
) {
2455 if (cflag
& CMSPAR
) {
2456 if (cflag
& PARODD
) {
2457 lParity
= LCR_PAR_MARK
;
2458 dbg("%s - parity = mark", __FUNCTION__
);
2460 lParity
= LCR_PAR_SPACE
;
2461 dbg("%s - parity = space", __FUNCTION__
);
2463 } else if (cflag
& PARODD
) {
2464 lParity
= LCR_PAR_ODD
;
2465 dbg("%s - parity = odd", __FUNCTION__
);
2467 lParity
= LCR_PAR_EVEN
;
2468 dbg("%s - parity = even", __FUNCTION__
);
2471 dbg("%s - parity = none", __FUNCTION__
);
2474 if (cflag
& CSTOPB
) {
2476 dbg("%s - stop bits = 2", __FUNCTION__
);
2479 dbg("%s - stop bits = 1", __FUNCTION__
);
2482 /* figure out the flow control settings */
2483 rxFlow
= txFlow
= 0x00;
2484 if (cflag
& CRTSCTS
) {
2485 rxFlow
|= IOSP_RX_FLOW_RTS
;
2486 txFlow
|= IOSP_TX_FLOW_CTS
;
2487 dbg("%s - RTS/CTS is enabled", __FUNCTION__
);
2489 dbg("%s - RTS/CTS is disabled", __FUNCTION__
);
2492 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2493 if (I_IXOFF(tty
) || I_IXON(tty
)) {
2494 unsigned char stop_char
= STOP_CHAR(tty
);
2495 unsigned char start_char
= START_CHAR(tty
);
2497 send_iosp_ext_cmd (edge_port
, IOSP_CMD_SET_XON_CHAR
, start_char
);
2498 send_iosp_ext_cmd (edge_port
, IOSP_CMD_SET_XOFF_CHAR
, stop_char
);
2500 /* if we are implementing INBOUND XON/XOFF */
2502 rxFlow
|= IOSP_RX_FLOW_XON_XOFF
;
2503 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__
, start_char
, stop_char
);
2505 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__
);
2508 /* if we are implementing OUTBOUND XON/XOFF */
2510 txFlow
|= IOSP_TX_FLOW_XON_XOFF
;
2511 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__
, start_char
, stop_char
);
2513 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__
);
2517 /* Set flow control to the configured value */
2518 send_iosp_ext_cmd (edge_port
, IOSP_CMD_SET_RX_FLOW
, rxFlow
);
2519 send_iosp_ext_cmd (edge_port
, IOSP_CMD_SET_TX_FLOW
, txFlow
);
2522 edge_port
->shadowLCR
&= ~(LCR_BITS_MASK
| LCR_STOP_MASK
| LCR_PAR_MASK
);
2523 edge_port
->shadowLCR
|= (lData
| lParity
| lStop
);
2525 edge_port
->validDataMask
= mask
;
2527 /* Send the updated LCR value to the EdgePort */
2528 status
= send_cmd_write_uart_register(edge_port
, LCR
, edge_port
->shadowLCR
);
2533 /* set up the MCR register and send it to the EdgePort */
2534 edge_port
->shadowMCR
= MCR_MASTER_IE
;
2535 if (cflag
& CBAUD
) {
2536 edge_port
->shadowMCR
|= (MCR_DTR
| MCR_RTS
);
2538 status
= send_cmd_write_uart_register(edge_port
, MCR
, edge_port
->shadowMCR
);
2543 /* Determine divisor based on baud rate */
2544 baud
= tty_get_baud_rate(tty
);
2546 /* pick a default, any default... */
2550 dbg("%s - baud rate = %d", __FUNCTION__
, baud
);
2551 status
= send_cmd_write_baud_rate (edge_port
, baud
);
2557 /****************************************************************************
2559 * Turns a string from Unicode into ASCII.
2560 * Doesn't do a good job with any characters that are outside the normal
2561 * ASCII range, but it's only for debugging...
2562 * NOTE: expects the unicode in LE format
2563 ****************************************************************************/
2564 static void unicode_to_ascii(char *string
, int buflen
, __le16
*unicode
, int unicode_size
)
2568 if (buflen
<= 0) /* never happens, but... */
2570 --buflen
; /* space for nul */
2572 for (i
= 0; i
< unicode_size
; i
++) {
2575 string
[i
] = (char)(le16_to_cpu(unicode
[i
]));
2581 /****************************************************************************
2582 * get_manufacturing_desc
2583 * reads in the manufacturing descriptor and stores it into the serial
2585 ****************************************************************************/
2586 static void get_manufacturing_desc (struct edgeport_serial
*edge_serial
)
2590 dbg("getting manufacturer descriptor");
2592 response
= rom_read (edge_serial
->serial
, (EDGE_MANUF_DESC_ADDR
& 0xffff0000) >> 16,
2593 (__u16
)(EDGE_MANUF_DESC_ADDR
& 0x0000ffff), EDGE_MANUF_DESC_LEN
,
2594 (__u8
*)(&edge_serial
->manuf_descriptor
));
2597 dev_err(&edge_serial
->serial
->dev
->dev
, "error in getting manufacturer descriptor\n");
2600 dbg("**Manufacturer Descriptor");
2601 dbg(" RomSize: %dK", edge_serial
->manuf_descriptor
.RomSize
);
2602 dbg(" RamSize: %dK", edge_serial
->manuf_descriptor
.RamSize
);
2603 dbg(" CpuRev: %d", edge_serial
->manuf_descriptor
.CpuRev
);
2604 dbg(" BoardRev: %d", edge_serial
->manuf_descriptor
.BoardRev
);
2605 dbg(" NumPorts: %d", edge_serial
->manuf_descriptor
.NumPorts
);
2606 dbg(" DescDate: %d/%d/%d", edge_serial
->manuf_descriptor
.DescDate
[0], edge_serial
->manuf_descriptor
.DescDate
[1], edge_serial
->manuf_descriptor
.DescDate
[2]+1900);
2607 unicode_to_ascii(string
, sizeof(string
),
2608 edge_serial
->manuf_descriptor
.SerialNumber
,
2609 edge_serial
->manuf_descriptor
.SerNumLength
/2);
2610 dbg(" SerialNumber: %s", string
);
2611 unicode_to_ascii(string
, sizeof(string
),
2612 edge_serial
->manuf_descriptor
.AssemblyNumber
,
2613 edge_serial
->manuf_descriptor
.AssemblyNumLength
/2);
2614 dbg(" AssemblyNumber: %s", string
);
2615 unicode_to_ascii(string
, sizeof(string
),
2616 edge_serial
->manuf_descriptor
.OemAssyNumber
,
2617 edge_serial
->manuf_descriptor
.OemAssyNumLength
/2);
2618 dbg(" OemAssyNumber: %s", string
);
2619 dbg(" UartType: %d", edge_serial
->manuf_descriptor
.UartType
);
2620 dbg(" IonPid: %d", edge_serial
->manuf_descriptor
.IonPid
);
2621 dbg(" IonConfig: %d", edge_serial
->manuf_descriptor
.IonConfig
);
2626 /****************************************************************************
2628 * reads in the bootloader descriptor and stores it into the serial
2630 ****************************************************************************/
2631 static void get_boot_desc (struct edgeport_serial
*edge_serial
)
2635 dbg("getting boot descriptor");
2637 response
= rom_read (edge_serial
->serial
, (EDGE_BOOT_DESC_ADDR
& 0xffff0000) >> 16,
2638 (__u16
)(EDGE_BOOT_DESC_ADDR
& 0x0000ffff), EDGE_BOOT_DESC_LEN
,
2639 (__u8
*)(&edge_serial
->boot_descriptor
));
2642 dev_err(&edge_serial
->serial
->dev
->dev
, "error in getting boot descriptor\n");
2644 dbg("**Boot Descriptor:");
2645 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial
->boot_descriptor
.BootCodeLength
));
2646 dbg(" MajorVersion: %d", edge_serial
->boot_descriptor
.MajorVersion
);
2647 dbg(" MinorVersion: %d", edge_serial
->boot_descriptor
.MinorVersion
);
2648 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial
->boot_descriptor
.BuildNumber
));
2649 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial
->boot_descriptor
.Capabilities
));
2650 dbg(" UConfig0: %d", edge_serial
->boot_descriptor
.UConfig0
);
2651 dbg(" UConfig1: %d", edge_serial
->boot_descriptor
.UConfig1
);
2656 /****************************************************************************
2657 * load_application_firmware
2658 * This is called to load the application firmware to the device
2659 ****************************************************************************/
2660 static void load_application_firmware (struct edgeport_serial
*edge_serial
)
2662 struct edge_firmware_image_record
*record
;
2663 unsigned char *firmware
;
2664 unsigned char *FirmwareImage
;
2669 switch (edge_serial
->product_info
.iDownloadFile
) {
2670 case EDGE_DOWNLOAD_FILE_I930
:
2671 dbg("downloading firmware version (930) %d.%d.%d",
2672 OperationalCodeImageVersion_GEN1
.MajorVersion
,
2673 OperationalCodeImageVersion_GEN1
.MinorVersion
,
2674 OperationalCodeImageVersion_GEN1
.BuildNumber
);
2675 firmware
= &OperationalCodeImage_GEN1
[0];
2676 FirmwareImage
= &OperationalCodeImage_GEN1
[0];
2677 ImageSize
= sizeof(OperationalCodeImage_GEN1
);
2680 case EDGE_DOWNLOAD_FILE_80251
:
2681 dbg("downloading firmware version (80251) %d.%d.%d",
2682 OperationalCodeImageVersion_GEN2
.MajorVersion
,
2683 OperationalCodeImageVersion_GEN2
.MinorVersion
,
2684 OperationalCodeImageVersion_GEN2
.BuildNumber
);
2685 firmware
= &OperationalCodeImage_GEN2
[0];
2686 FirmwareImage
= &OperationalCodeImage_GEN2
[0];
2687 ImageSize
= sizeof(OperationalCodeImage_GEN2
);
2690 case EDGE_DOWNLOAD_FILE_NONE
:
2691 dbg ("No download file specified, skipping download\n");
2700 record
= (struct edge_firmware_image_record
*)firmware
;
2701 response
= sram_write (edge_serial
->serial
, le16_to_cpu(record
->ExtAddr
), le16_to_cpu(record
->Addr
), le16_to_cpu(record
->Len
), &record
->Data
[0]);
2703 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
));
2706 firmware
+= sizeof (struct edge_firmware_image_record
) + le16_to_cpu(record
->Len
);
2707 if (firmware
>= &FirmwareImage
[ImageSize
]) {
2712 dbg("sending exec_dl_code");
2713 response
= usb_control_msg (edge_serial
->serial
->dev
,
2714 usb_sndctrlpipe(edge_serial
->serial
->dev
, 0),
2715 USB_REQUEST_ION_EXEC_DL_CODE
,
2716 0x40, 0x4000, 0x0001, NULL
, 0, 3000);
2722 /****************************************************************************
2724 ****************************************************************************/
2725 static int edge_startup (struct usb_serial
*serial
)
2727 struct edgeport_serial
*edge_serial
;
2728 struct edgeport_port
*edge_port
;
2729 struct usb_device
*dev
;
2734 /* create our private serial structure */
2735 edge_serial
= kzalloc(sizeof(struct edgeport_serial
), GFP_KERNEL
);
2736 if (edge_serial
== NULL
) {
2737 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __FUNCTION__
);
2740 spin_lock_init(&edge_serial
->es_lock
);
2741 edge_serial
->serial
= serial
;
2742 usb_set_serial_data(serial
, edge_serial
);
2744 /* get the name for the device from the device */
2745 i
= get_string(dev
, dev
->descriptor
.iManufacturer
,
2746 &edge_serial
->name
[0], MAX_NAME_LEN
+1);
2747 edge_serial
->name
[i
++] = ' ';
2748 get_string(dev
, dev
->descriptor
.iProduct
,
2749 &edge_serial
->name
[i
], MAX_NAME_LEN
+2 - i
);
2751 dev_info(&serial
->dev
->dev
, "%s detected\n", edge_serial
->name
);
2753 /* get the manufacturing descriptor for this device */
2754 get_manufacturing_desc (edge_serial
);
2756 /* get the boot descriptor */
2757 get_boot_desc (edge_serial
);
2759 get_product_info(edge_serial
);
2761 /* set the number of ports from the manufacturing description */
2762 /* serial->num_ports = serial->product_info.NumPorts; */
2763 if (edge_serial
->product_info
.NumPorts
!= serial
->num_ports
) {
2764 warn("%s - Device Reported %d serial ports vs core "
2765 "thinking we have %d ports, email greg@kroah.com this info.",
2766 __FUNCTION__
, edge_serial
->product_info
.NumPorts
,
2770 dbg("%s - time 1 %ld", __FUNCTION__
, jiffies
);
2772 /* now load the application firmware into this device */
2773 load_application_firmware (edge_serial
);
2775 dbg("%s - time 2 %ld", __FUNCTION__
, jiffies
);
2777 /* Check current Edgeport EEPROM and update if necessary */
2778 update_edgeport_E2PROM (edge_serial
);
2780 dbg("%s - time 3 %ld", __FUNCTION__
, jiffies
);
2782 /* set the configuration to use #1 */
2783 // dbg("set_configuration 1");
2784 // usb_set_configuration (dev, 1);
2786 /* we set up the pointers to the endpoints in the edge_open function,
2787 * as the structures aren't created yet. */
2789 /* set up our port private structures */
2790 for (i
= 0; i
< serial
->num_ports
; ++i
) {
2791 edge_port
= kmalloc (sizeof(struct edgeport_port
), GFP_KERNEL
);
2792 if (edge_port
== NULL
) {
2793 dev_err(&serial
->dev
->dev
, "%s - Out of memory\n", __FUNCTION__
);
2794 for (j
= 0; j
< i
; ++j
) {
2795 kfree (usb_get_serial_port_data(serial
->port
[j
]));
2796 usb_set_serial_port_data(serial
->port
[j
], NULL
);
2798 usb_set_serial_data(serial
, NULL
);
2802 memset (edge_port
, 0, sizeof(struct edgeport_port
));
2803 spin_lock_init(&edge_port
->ep_lock
);
2804 edge_port
->port
= serial
->port
[i
];
2805 usb_set_serial_port_data(serial
->port
[i
], edge_port
);
2812 /****************************************************************************
2814 * This function is called whenever the device is removed from the usb bus.
2815 ****************************************************************************/
2816 static void edge_shutdown (struct usb_serial
*serial
)
2820 dbg("%s", __FUNCTION__
);
2822 /* stop reads and writes on all ports */
2823 for (i
=0; i
< serial
->num_ports
; ++i
) {
2824 kfree (usb_get_serial_port_data(serial
->port
[i
]));
2825 usb_set_serial_port_data(serial
->port
[i
], NULL
);
2827 kfree (usb_get_serial_data(serial
));
2828 usb_set_serial_data(serial
, NULL
);
2832 /****************************************************************************
2834 * This is called by the module subsystem, or on startup to initialize us
2835 ****************************************************************************/
2836 static int __init
edgeport_init(void)
2840 retval
= usb_serial_register(&edgeport_2port_device
);
2842 goto failed_2port_device_register
;
2843 retval
= usb_serial_register(&edgeport_4port_device
);
2845 goto failed_4port_device_register
;
2846 retval
= usb_serial_register(&edgeport_8port_device
);
2848 goto failed_8port_device_register
;
2849 retval
= usb_register(&io_driver
);
2851 goto failed_usb_register
;
2852 info(DRIVER_DESC
" " DRIVER_VERSION
);
2855 failed_usb_register
:
2856 usb_serial_deregister(&edgeport_8port_device
);
2857 failed_8port_device_register
:
2858 usb_serial_deregister(&edgeport_4port_device
);
2859 failed_4port_device_register
:
2860 usb_serial_deregister(&edgeport_2port_device
);
2861 failed_2port_device_register
:
2866 /****************************************************************************
2868 * Called when the driver is about to be unloaded.
2869 ****************************************************************************/
2870 static void __exit
edgeport_exit (void)
2872 usb_deregister (&io_driver
);
2873 usb_serial_deregister (&edgeport_2port_device
);
2874 usb_serial_deregister (&edgeport_4port_device
);
2875 usb_serial_deregister (&edgeport_8port_device
);
2878 module_init(edgeport_init
);
2879 module_exit(edgeport_exit
);
2881 /* Module information */
2882 MODULE_AUTHOR( DRIVER_AUTHOR
);
2883 MODULE_DESCRIPTION( DRIVER_DESC
);
2884 MODULE_LICENSE("GPL");
2886 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
2887 MODULE_PARM_DESC(debug
, "Debug enabled or not");
2889 module_param(low_latency
, bool, S_IRUGO
| S_IWUSR
);
2890 MODULE_PARM_DESC(low_latency
, "Low latency enabled or not");