3012 lines
92 KiB
C
3012 lines
92 KiB
C
/*
|
|
* Edgeport USB Serial Converter driver
|
|
*
|
|
* Copyright (C) 2000 Inside Out Networks, All rights reserved.
|
|
* Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Supports the following devices:
|
|
* Edgeport/4
|
|
* Edgeport/4t
|
|
* Edgeport/2
|
|
* Edgeport/4i
|
|
* Edgeport/2i
|
|
* Edgeport/421
|
|
* Edgeport/21
|
|
* Rapidport/4
|
|
* Edgeport/8
|
|
* Edgeport/2D8
|
|
* Edgeport/4D8
|
|
* Edgeport/8i
|
|
*
|
|
* For questions or problems with this driver, contact Inside Out
|
|
* Networks technical support, or Peter Berger <pberger@brimson.com>,
|
|
* or Al Borchers <alborchers@steinerpoint.com>.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/tty_driver.h>
|
|
#include <linux/tty_flip.h>
|
|
#include <linux/module.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/ioctl.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/ihex.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/serial.h>
|
|
#include "io_edgeport.h"
|
|
#include "io_ionsp.h" /* info for the iosp messages */
|
|
#include "io_16654.h" /* 16654 UART defines */
|
|
|
|
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
|
|
#define DRIVER_DESC "Edgeport USB Serial Driver"
|
|
|
|
#define MAX_NAME_LEN 64
|
|
|
|
#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
|
|
|
|
/* receive port state */
|
|
enum RXSTATE {
|
|
EXPECT_HDR1 = 0, /* Expect header byte 1 */
|
|
EXPECT_HDR2 = 1, /* Expect header byte 2 */
|
|
EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
|
|
EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
|
|
};
|
|
|
|
|
|
/* Transmit Fifo
|
|
* This Transmit queue is an extension of the edgeport Rx buffer.
|
|
* The maximum amount of data buffered in both the edgeport
|
|
* Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
|
|
*/
|
|
struct TxFifo {
|
|
unsigned int head; /* index to head pointer (write) */
|
|
unsigned int tail; /* index to tail pointer (read) */
|
|
unsigned int count; /* Bytes in queue */
|
|
unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
|
|
unsigned char *fifo; /* allocated Buffer */
|
|
};
|
|
|
|
/* This structure holds all of the local port information */
|
|
struct edgeport_port {
|
|
__u16 txCredits; /* our current credits for this port */
|
|
__u16 maxTxCredits; /* the max size of the port */
|
|
|
|
struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
|
|
struct urb *write_urb; /* write URB for this port */
|
|
bool write_in_progress; /* 'true' while a write URB is outstanding */
|
|
spinlock_t ep_lock;
|
|
|
|
__u8 shadowLCR; /* last LCR value received */
|
|
__u8 shadowMCR; /* last MCR value received */
|
|
__u8 shadowMSR; /* last MSR value received */
|
|
__u8 shadowLSR; /* last LSR value received */
|
|
__u8 shadowXonChar; /* last value set as XON char in Edgeport */
|
|
__u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
|
|
__u8 validDataMask;
|
|
__u32 baudRate;
|
|
|
|
bool open;
|
|
bool openPending;
|
|
bool commandPending;
|
|
bool closePending;
|
|
bool chaseResponsePending;
|
|
|
|
wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
|
|
wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
|
|
wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
|
|
|
|
struct usb_serial_port *port; /* loop back to the owner of this object */
|
|
};
|
|
|
|
|
|
/* This structure holds all of the individual device information */
|
|
struct edgeport_serial {
|
|
char name[MAX_NAME_LEN+2]; /* string name of this device */
|
|
|
|
struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
|
|
struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
|
|
struct edgeport_product_info product_info; /* Product Info */
|
|
struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
|
|
int is_epic; /* flag if EPiC device or not */
|
|
|
|
__u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
|
|
unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
|
|
struct urb *interrupt_read_urb; /* our interrupt urb */
|
|
|
|
__u8 bulk_in_endpoint; /* the bulk in endpoint handle */
|
|
unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
|
|
struct urb *read_urb; /* our bulk read urb */
|
|
bool read_in_progress;
|
|
spinlock_t es_lock;
|
|
|
|
__u8 bulk_out_endpoint; /* the bulk out endpoint handle */
|
|
|
|
__s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
|
|
|
|
enum RXSTATE rxState; /* the current state of the bulk receive processor */
|
|
__u8 rxHeader1; /* receive header byte 1 */
|
|
__u8 rxHeader2; /* receive header byte 2 */
|
|
__u8 rxHeader3; /* receive header byte 3 */
|
|
__u8 rxPort; /* the port that we are currently receiving data for */
|
|
__u8 rxStatusCode; /* the receive status code */
|
|
__u8 rxStatusParam; /* the receive status paramater */
|
|
__s16 rxBytesRemaining; /* the number of port bytes left to read */
|
|
struct usb_serial *serial; /* loop back to the owner of this object */
|
|
};
|
|
|
|
/* baud rate information */
|
|
struct divisor_table_entry {
|
|
__u32 BaudRate;
|
|
__u16 Divisor;
|
|
};
|
|
|
|
/*
|
|
* Define table of divisors for Rev A EdgePort/4 hardware
|
|
* These assume a 3.6864MHz crystal, the standard /16, and
|
|
* MCR.7 = 0.
|
|
*/
|
|
|
|
static const struct divisor_table_entry divisor_table[] = {
|
|
{ 50, 4608},
|
|
{ 75, 3072},
|
|
{ 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
|
|
{ 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
|
|
{ 150, 1536},
|
|
{ 300, 768},
|
|
{ 600, 384},
|
|
{ 1200, 192},
|
|
{ 1800, 128},
|
|
{ 2400, 96},
|
|
{ 4800, 48},
|
|
{ 7200, 32},
|
|
{ 9600, 24},
|
|
{ 14400, 16},
|
|
{ 19200, 12},
|
|
{ 38400, 6},
|
|
{ 57600, 4},
|
|
{ 115200, 2},
|
|
{ 230400, 1},
|
|
};
|
|
|
|
/* Number of outstanding Command Write Urbs */
|
|
static atomic_t CmdUrbs = ATOMIC_INIT(0);
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
/* function prototypes for all URB callbacks */
|
|
static void edge_interrupt_callback(struct urb *urb);
|
|
static void edge_bulk_in_callback(struct urb *urb);
|
|
static void edge_bulk_out_data_callback(struct urb *urb);
|
|
static void edge_bulk_out_cmd_callback(struct urb *urb);
|
|
|
|
/* function prototypes for the usbserial callbacks */
|
|
static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
|
|
static void edge_close(struct usb_serial_port *port);
|
|
static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
|
|
const unsigned char *buf, int count);
|
|
static int edge_write_room(struct tty_struct *tty);
|
|
static int edge_chars_in_buffer(struct tty_struct *tty);
|
|
static void edge_throttle(struct tty_struct *tty);
|
|
static void edge_unthrottle(struct tty_struct *tty);
|
|
static void edge_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port,
|
|
struct ktermios *old_termios);
|
|
static int edge_ioctl(struct tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg);
|
|
static void edge_break(struct tty_struct *tty, int break_state);
|
|
static int edge_tiocmget(struct tty_struct *tty);
|
|
static int edge_tiocmset(struct tty_struct *tty,
|
|
unsigned int set, unsigned int clear);
|
|
static int edge_startup(struct usb_serial *serial);
|
|
static void edge_disconnect(struct usb_serial *serial);
|
|
static void edge_release(struct usb_serial *serial);
|
|
static int edge_port_probe(struct usb_serial_port *port);
|
|
static int edge_port_remove(struct usb_serial_port *port);
|
|
|
|
#include "io_tables.h" /* all of the devices that this driver supports */
|
|
|
|
/* function prototypes for all of our local functions */
|
|
|
|
static void process_rcvd_data(struct edgeport_serial *edge_serial,
|
|
unsigned char *buffer, __u16 bufferLength);
|
|
static void process_rcvd_status(struct edgeport_serial *edge_serial,
|
|
__u8 byte2, __u8 byte3);
|
|
static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
|
|
int length);
|
|
static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
|
|
static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
|
|
__u8 lsr, __u8 data);
|
|
static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
|
|
__u8 param);
|
|
static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
|
|
static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
|
|
int baudRate);
|
|
static void change_port_settings(struct tty_struct *tty,
|
|
struct edgeport_port *edge_port,
|
|
struct ktermios *old_termios);
|
|
static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
|
|
__u8 regNum, __u8 regValue);
|
|
static int write_cmd_usb(struct edgeport_port *edge_port,
|
|
unsigned char *buffer, int writeLength);
|
|
static void send_more_port_data(struct edgeport_serial *edge_serial,
|
|
struct edgeport_port *edge_port);
|
|
|
|
static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
|
|
__u16 length, const __u8 *data);
|
|
static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
|
|
__u16 length, __u8 *data);
|
|
static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
|
|
__u16 length, const __u8 *data);
|
|
static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
|
|
static void get_boot_desc(struct edgeport_serial *edge_serial);
|
|
static void load_application_firmware(struct edgeport_serial *edge_serial);
|
|
|
|
static void unicode_to_ascii(char *string, int buflen,
|
|
__le16 *unicode, int unicode_size);
|
|
|
|
|
|
/* ************************************************************************ */
|
|
/* ************************************************************************ */
|
|
/* ************************************************************************ */
|
|
/* ************************************************************************ */
|
|
|
|
/************************************************************************
|
|
* *
|
|
* update_edgeport_E2PROM() Compare current versions of *
|
|
* Boot ROM and Manufacture *
|
|
* Descriptors with versions *
|
|
* embedded in this driver *
|
|
* *
|
|
************************************************************************/
|
|
static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
|
|
{
|
|
struct device *dev = &edge_serial->serial->dev->dev;
|
|
__u32 BootCurVer;
|
|
__u32 BootNewVer;
|
|
__u8 BootMajorVersion;
|
|
__u8 BootMinorVersion;
|
|
__u16 BootBuildNumber;
|
|
__u32 Bootaddr;
|
|
const struct ihex_binrec *rec;
|
|
const struct firmware *fw;
|
|
const char *fw_name;
|
|
int response;
|
|
|
|
switch (edge_serial->product_info.iDownloadFile) {
|
|
case EDGE_DOWNLOAD_FILE_I930:
|
|
fw_name = "edgeport/boot.fw";
|
|
break;
|
|
case EDGE_DOWNLOAD_FILE_80251:
|
|
fw_name = "edgeport/boot2.fw";
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
response = request_ihex_firmware(&fw, fw_name,
|
|
&edge_serial->serial->dev->dev);
|
|
if (response) {
|
|
dev_err(dev, "Failed to load image \"%s\" err %d\n",
|
|
fw_name, response);
|
|
return;
|
|
}
|
|
|
|
rec = (const struct ihex_binrec *)fw->data;
|
|
BootMajorVersion = rec->data[0];
|
|
BootMinorVersion = rec->data[1];
|
|
BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
|
|
|
|
/* Check Boot Image Version */
|
|
BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
|
|
(edge_serial->boot_descriptor.MinorVersion << 16) +
|
|
le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
|
|
|
|
BootNewVer = (BootMajorVersion << 24) +
|
|
(BootMinorVersion << 16) +
|
|
BootBuildNumber;
|
|
|
|
dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
|
|
edge_serial->boot_descriptor.MajorVersion,
|
|
edge_serial->boot_descriptor.MinorVersion,
|
|
le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
|
|
|
|
|
|
if (BootNewVer > BootCurVer) {
|
|
dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
|
|
edge_serial->boot_descriptor.MajorVersion,
|
|
edge_serial->boot_descriptor.MinorVersion,
|
|
le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
|
|
BootMajorVersion, BootMinorVersion, BootBuildNumber);
|
|
|
|
dev_dbg(dev, "Downloading new Boot Image\n");
|
|
|
|
for (rec = ihex_next_binrec(rec); rec;
|
|
rec = ihex_next_binrec(rec)) {
|
|
Bootaddr = be32_to_cpu(rec->addr);
|
|
response = rom_write(edge_serial->serial,
|
|
Bootaddr >> 16,
|
|
Bootaddr & 0xFFFF,
|
|
be16_to_cpu(rec->len),
|
|
&rec->data[0]);
|
|
if (response < 0) {
|
|
dev_err(&edge_serial->serial->dev->dev,
|
|
"rom_write failed (%x, %x, %d)\n",
|
|
Bootaddr >> 16, Bootaddr & 0xFFFF,
|
|
be16_to_cpu(rec->len));
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
dev_dbg(dev, "Boot Image -- already up to date\n");
|
|
}
|
|
release_firmware(fw);
|
|
}
|
|
|
|
#if 0
|
|
/************************************************************************
|
|
*
|
|
* Get string descriptor from device
|
|
*
|
|
************************************************************************/
|
|
static int get_string_desc(struct usb_device *dev, int Id,
|
|
struct usb_string_descriptor **pRetDesc)
|
|
{
|
|
struct usb_string_descriptor StringDesc;
|
|
struct usb_string_descriptor *pStringDesc;
|
|
|
|
dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id);
|
|
|
|
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
|
|
sizeof(StringDesc)))
|
|
return 0;
|
|
|
|
pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
|
|
if (!pStringDesc)
|
|
return -1;
|
|
|
|
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
|
|
StringDesc.bLength)) {
|
|
kfree(pStringDesc);
|
|
return -1;
|
|
}
|
|
|
|
*pRetDesc = pStringDesc;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void dump_product_info(struct edgeport_serial *edge_serial,
|
|
struct edgeport_product_info *product_info)
|
|
{
|
|
struct device *dev = &edge_serial->serial->dev->dev;
|
|
|
|
/* Dump Product Info structure */
|
|
dev_dbg(dev, "**Product Information:\n");
|
|
dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
|
|
dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
|
|
dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
|
|
dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
|
|
dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
|
|
dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
|
|
dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
|
|
dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
|
|
dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
|
|
dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
|
|
dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
|
|
dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
|
|
product_info->BootMajorVersion,
|
|
product_info->BootMinorVersion,
|
|
le16_to_cpu(product_info->BootBuildNumber));
|
|
dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
|
|
product_info->FirmwareMajorVersion,
|
|
product_info->FirmwareMinorVersion,
|
|
le16_to_cpu(product_info->FirmwareBuildNumber));
|
|
dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
|
|
product_info->ManufactureDescDate[0],
|
|
product_info->ManufactureDescDate[1],
|
|
product_info->ManufactureDescDate[2]+1900);
|
|
dev_dbg(dev, " iDownloadFile 0x%x\n",
|
|
product_info->iDownloadFile);
|
|
dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
|
|
}
|
|
|
|
static void get_product_info(struct edgeport_serial *edge_serial)
|
|
{
|
|
struct edgeport_product_info *product_info = &edge_serial->product_info;
|
|
|
|
memset(product_info, 0, sizeof(struct edgeport_product_info));
|
|
|
|
product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
|
|
product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
|
|
product_info->ProdInfoVer = 0;
|
|
|
|
product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
|
|
product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
|
|
product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
|
|
product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
|
|
|
|
product_info->BootMajorVersion =
|
|
edge_serial->boot_descriptor.MajorVersion;
|
|
product_info->BootMinorVersion =
|
|
edge_serial->boot_descriptor.MinorVersion;
|
|
product_info->BootBuildNumber =
|
|
edge_serial->boot_descriptor.BuildNumber;
|
|
|
|
memcpy(product_info->ManufactureDescDate,
|
|
edge_serial->manuf_descriptor.DescDate,
|
|
sizeof(edge_serial->manuf_descriptor.DescDate));
|
|
|
|
/* check if this is 2nd generation hardware */
|
|
if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
|
|
& ION_DEVICE_ID_80251_NETCHIP)
|
|
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
|
|
else
|
|
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
|
|
|
|
/* Determine Product type and set appropriate flags */
|
|
switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
|
|
case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
|
|
case ION_DEVICE_ID_EDGEPORT_4T:
|
|
case ION_DEVICE_ID_EDGEPORT_4:
|
|
case ION_DEVICE_ID_EDGEPORT_2:
|
|
case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
|
|
case ION_DEVICE_ID_EDGEPORT_8:
|
|
case ION_DEVICE_ID_EDGEPORT_421:
|
|
case ION_DEVICE_ID_EDGEPORT_21:
|
|
case ION_DEVICE_ID_EDGEPORT_2_DIN:
|
|
case ION_DEVICE_ID_EDGEPORT_4_DIN:
|
|
case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
|
|
product_info->IsRS232 = 1;
|
|
break;
|
|
|
|
case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
|
|
product_info->IsRS422 = 1;
|
|
product_info->IsRS485 = 1;
|
|
break;
|
|
|
|
case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
|
|
case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
|
|
product_info->IsRS422 = 1;
|
|
break;
|
|
}
|
|
|
|
dump_product_info(edge_serial, product_info);
|
|
}
|
|
|
|
static int get_epic_descriptor(struct edgeport_serial *ep)
|
|
{
|
|
int result;
|
|
struct usb_serial *serial = ep->serial;
|
|
struct edgeport_product_info *product_info = &ep->product_info;
|
|
struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
|
|
struct edge_compatibility_bits *bits;
|
|
struct device *dev = &serial->dev->dev;
|
|
|
|
ep->is_epic = 0;
|
|
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
|
|
USB_REQUEST_ION_GET_EPIC_DESC,
|
|
0xC0, 0x00, 0x00,
|
|
&ep->epic_descriptor,
|
|
sizeof(struct edge_compatibility_descriptor),
|
|
300);
|
|
|
|
if (result > 0) {
|
|
ep->is_epic = 1;
|
|
memset(product_info, 0, sizeof(struct edgeport_product_info));
|
|
|
|
product_info->NumPorts = epic->NumPorts;
|
|
product_info->ProdInfoVer = 0;
|
|
product_info->FirmwareMajorVersion = epic->MajorVersion;
|
|
product_info->FirmwareMinorVersion = epic->MinorVersion;
|
|
product_info->FirmwareBuildNumber = epic->BuildNumber;
|
|
product_info->iDownloadFile = epic->iDownloadFile;
|
|
product_info->EpicVer = epic->EpicVer;
|
|
product_info->Epic = epic->Supports;
|
|
product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
|
|
dump_product_info(ep, product_info);
|
|
|
|
bits = &ep->epic_descriptor.Supports;
|
|
dev_dbg(dev, "**EPIC descriptor:\n");
|
|
dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
|
|
dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/************************************************************************/
|
|
/************************************************************************/
|
|
/* U S B C A L L B A C K F U N C T I O N S */
|
|
/* U S B C A L L B A C K F U N C T I O N S */
|
|
/************************************************************************/
|
|
/************************************************************************/
|
|
|
|
/*****************************************************************************
|
|
* edge_interrupt_callback
|
|
* this is the callback function for when we have received data on the
|
|
* interrupt endpoint.
|
|
*****************************************************************************/
|
|
static void edge_interrupt_callback(struct urb *urb)
|
|
{
|
|
struct edgeport_serial *edge_serial = urb->context;
|
|
struct device *dev;
|
|
struct edgeport_port *edge_port;
|
|
struct usb_serial_port *port;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
int length = urb->actual_length;
|
|
int bytes_avail;
|
|
int position;
|
|
int txCredits;
|
|
int portNumber;
|
|
int result;
|
|
int status = urb->status;
|
|
|
|
switch (status) {
|
|
case 0:
|
|
/* success */
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
/* this urb is terminated, clean up */
|
|
dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
|
|
return;
|
|
default:
|
|
dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
|
|
goto exit;
|
|
}
|
|
|
|
dev = &edge_serial->serial->dev->dev;
|
|
|
|
/* process this interrupt-read even if there are no ports open */
|
|
if (length) {
|
|
usb_serial_debug_data(dev, __func__, length, data);
|
|
|
|
if (length > 1) {
|
|
bytes_avail = data[0] | (data[1] << 8);
|
|
if (bytes_avail) {
|
|
spin_lock(&edge_serial->es_lock);
|
|
edge_serial->rxBytesAvail += bytes_avail;
|
|
dev_dbg(dev,
|
|
"%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
|
|
__func__, bytes_avail,
|
|
edge_serial->rxBytesAvail,
|
|
edge_serial->read_in_progress);
|
|
|
|
if (edge_serial->rxBytesAvail > 0 &&
|
|
!edge_serial->read_in_progress) {
|
|
dev_dbg(dev, "%s - posting a read\n", __func__);
|
|
edge_serial->read_in_progress = true;
|
|
|
|
/* we have pending bytes on the
|
|
bulk in pipe, send a request */
|
|
result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_err(dev,
|
|
"%s - usb_submit_urb(read bulk) failed with result = %d\n",
|
|
__func__, result);
|
|
edge_serial->read_in_progress = false;
|
|
}
|
|
}
|
|
spin_unlock(&edge_serial->es_lock);
|
|
}
|
|
}
|
|
/* grab the txcredits for the ports if available */
|
|
position = 2;
|
|
portNumber = 0;
|
|
while ((position < length) &&
|
|
(portNumber < edge_serial->serial->num_ports)) {
|
|
txCredits = data[position] | (data[position+1] << 8);
|
|
if (txCredits) {
|
|
port = edge_serial->serial->port[portNumber];
|
|
edge_port = usb_get_serial_port_data(port);
|
|
if (edge_port->open) {
|
|
spin_lock(&edge_port->ep_lock);
|
|
edge_port->txCredits += txCredits;
|
|
spin_unlock(&edge_port->ep_lock);
|
|
dev_dbg(dev, "%s - txcredits for port%d = %d\n",
|
|
__func__, portNumber,
|
|
edge_port->txCredits);
|
|
|
|
/* tell the tty driver that something
|
|
has changed */
|
|
tty_port_tty_wakeup(&edge_port->port->port);
|
|
/* Since we have more credit, check
|
|
if more data can be sent */
|
|
send_more_port_data(edge_serial,
|
|
edge_port);
|
|
}
|
|
}
|
|
position += 2;
|
|
++portNumber;
|
|
}
|
|
}
|
|
|
|
exit:
|
|
result = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (result)
|
|
dev_err(&urb->dev->dev,
|
|
"%s - Error %d submitting control urb\n",
|
|
__func__, result);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_bulk_in_callback
|
|
* this is the callback function for when we have received data on the
|
|
* bulk in endpoint.
|
|
*****************************************************************************/
|
|
static void edge_bulk_in_callback(struct urb *urb)
|
|
{
|
|
struct edgeport_serial *edge_serial = urb->context;
|
|
struct device *dev;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
int retval;
|
|
__u16 raw_data_length;
|
|
int status = urb->status;
|
|
|
|
if (status) {
|
|
dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
|
|
__func__, status);
|
|
edge_serial->read_in_progress = false;
|
|
return;
|
|
}
|
|
|
|
if (urb->actual_length == 0) {
|
|
dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
|
|
edge_serial->read_in_progress = false;
|
|
return;
|
|
}
|
|
|
|
dev = &edge_serial->serial->dev->dev;
|
|
raw_data_length = urb->actual_length;
|
|
|
|
usb_serial_debug_data(dev, __func__, raw_data_length, data);
|
|
|
|
spin_lock(&edge_serial->es_lock);
|
|
|
|
/* decrement our rxBytes available by the number that we just got */
|
|
edge_serial->rxBytesAvail -= raw_data_length;
|
|
|
|
dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
|
|
raw_data_length, edge_serial->rxBytesAvail);
|
|
|
|
process_rcvd_data(edge_serial, data, urb->actual_length);
|
|
|
|
/* check to see if there's any more data for us to read */
|
|
if (edge_serial->rxBytesAvail > 0) {
|
|
dev_dbg(dev, "%s - posting a read\n", __func__);
|
|
retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
|
|
if (retval) {
|
|
dev_err(dev,
|
|
"%s - usb_submit_urb(read bulk) failed, retval = %d\n",
|
|
__func__, retval);
|
|
edge_serial->read_in_progress = false;
|
|
}
|
|
} else {
|
|
edge_serial->read_in_progress = false;
|
|
}
|
|
|
|
spin_unlock(&edge_serial->es_lock);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_bulk_out_data_callback
|
|
* this is the callback function for when we have finished sending
|
|
* serial data on the bulk out endpoint.
|
|
*****************************************************************************/
|
|
static void edge_bulk_out_data_callback(struct urb *urb)
|
|
{
|
|
struct edgeport_port *edge_port = urb->context;
|
|
int status = urb->status;
|
|
|
|
if (status) {
|
|
dev_dbg(&urb->dev->dev,
|
|
"%s - nonzero write bulk status received: %d\n",
|
|
__func__, status);
|
|
}
|
|
|
|
if (edge_port->open)
|
|
tty_port_tty_wakeup(&edge_port->port->port);
|
|
|
|
/* Release the Write URB */
|
|
edge_port->write_in_progress = false;
|
|
|
|
/* Check if more data needs to be sent */
|
|
send_more_port_data((struct edgeport_serial *)
|
|
(usb_get_serial_data(edge_port->port->serial)), edge_port);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* BulkOutCmdCallback
|
|
* this is the callback function for when we have finished sending a
|
|
* command on the bulk out endpoint.
|
|
*****************************************************************************/
|
|
static void edge_bulk_out_cmd_callback(struct urb *urb)
|
|
{
|
|
struct edgeport_port *edge_port = urb->context;
|
|
int status = urb->status;
|
|
|
|
atomic_dec(&CmdUrbs);
|
|
dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
|
|
__func__, urb, atomic_read(&CmdUrbs));
|
|
|
|
|
|
/* clean up the transfer buffer */
|
|
kfree(urb->transfer_buffer);
|
|
|
|
/* Free the command urb */
|
|
usb_free_urb(urb);
|
|
|
|
if (status) {
|
|
dev_dbg(&urb->dev->dev,
|
|
"%s - nonzero write bulk status received: %d\n",
|
|
__func__, status);
|
|
return;
|
|
}
|
|
|
|
/* tell the tty driver that something has changed */
|
|
if (edge_port->open)
|
|
tty_port_tty_wakeup(&edge_port->port->port);
|
|
|
|
/* we have completed the command */
|
|
edge_port->commandPending = false;
|
|
wake_up(&edge_port->wait_command);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* Driver tty interface functions
|
|
*****************************************************************************/
|
|
|
|
/*****************************************************************************
|
|
* SerialOpen
|
|
* this function is called by the tty driver when a port is opened
|
|
* If successful, we return 0
|
|
* Otherwise we return a negative error number.
|
|
*****************************************************************************/
|
|
static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct device *dev = &port->dev;
|
|
struct usb_serial *serial;
|
|
struct edgeport_serial *edge_serial;
|
|
int response;
|
|
|
|
if (edge_port == NULL)
|
|
return -ENODEV;
|
|
|
|
/* see if we've set up our endpoint info yet (can't set it up
|
|
in edge_startup as the structures were not set up at that time.) */
|
|
serial = port->serial;
|
|
edge_serial = usb_get_serial_data(serial);
|
|
if (edge_serial == NULL)
|
|
return -ENODEV;
|
|
if (edge_serial->interrupt_in_buffer == NULL) {
|
|
struct usb_serial_port *port0 = serial->port[0];
|
|
|
|
/* not set up yet, so do it now */
|
|
edge_serial->interrupt_in_buffer =
|
|
port0->interrupt_in_buffer;
|
|
edge_serial->interrupt_in_endpoint =
|
|
port0->interrupt_in_endpointAddress;
|
|
edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
|
|
edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
|
|
edge_serial->bulk_in_endpoint =
|
|
port0->bulk_in_endpointAddress;
|
|
edge_serial->read_urb = port0->read_urb;
|
|
edge_serial->bulk_out_endpoint =
|
|
port0->bulk_out_endpointAddress;
|
|
|
|
/* set up our interrupt urb */
|
|
usb_fill_int_urb(edge_serial->interrupt_read_urb,
|
|
serial->dev,
|
|
usb_rcvintpipe(serial->dev,
|
|
port0->interrupt_in_endpointAddress),
|
|
port0->interrupt_in_buffer,
|
|
edge_serial->interrupt_read_urb->transfer_buffer_length,
|
|
edge_interrupt_callback, edge_serial,
|
|
edge_serial->interrupt_read_urb->interval);
|
|
|
|
/* set up our bulk in urb */
|
|
usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
|
|
usb_rcvbulkpipe(serial->dev,
|
|
port0->bulk_in_endpointAddress),
|
|
port0->bulk_in_buffer,
|
|
edge_serial->read_urb->transfer_buffer_length,
|
|
edge_bulk_in_callback, edge_serial);
|
|
edge_serial->read_in_progress = false;
|
|
|
|
/* start interrupt read for this edgeport
|
|
* this interrupt will continue as long
|
|
* as the edgeport is connected */
|
|
response = usb_submit_urb(edge_serial->interrupt_read_urb,
|
|
GFP_KERNEL);
|
|
if (response) {
|
|
dev_err(dev, "%s - Error %d submitting control urb\n",
|
|
__func__, response);
|
|
}
|
|
}
|
|
|
|
/* initialize our wait queues */
|
|
init_waitqueue_head(&edge_port->wait_open);
|
|
init_waitqueue_head(&edge_port->wait_chase);
|
|
init_waitqueue_head(&edge_port->wait_command);
|
|
|
|
/* initialize our port settings */
|
|
edge_port->txCredits = 0; /* Can't send any data yet */
|
|
/* Must always set this bit to enable ints! */
|
|
edge_port->shadowMCR = MCR_MASTER_IE;
|
|
edge_port->chaseResponsePending = false;
|
|
|
|
/* send a open port command */
|
|
edge_port->openPending = true;
|
|
edge_port->open = false;
|
|
response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
|
|
|
|
if (response < 0) {
|
|
dev_err(dev, "%s - error sending open port command\n", __func__);
|
|
edge_port->openPending = false;
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* now wait for the port to be completely opened */
|
|
wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
|
|
OPEN_TIMEOUT);
|
|
|
|
if (!edge_port->open) {
|
|
/* open timed out */
|
|
dev_dbg(dev, "%s - open timedout\n", __func__);
|
|
edge_port->openPending = false;
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* create the txfifo */
|
|
edge_port->txfifo.head = 0;
|
|
edge_port->txfifo.tail = 0;
|
|
edge_port->txfifo.count = 0;
|
|
edge_port->txfifo.size = edge_port->maxTxCredits;
|
|
edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
|
|
|
|
if (!edge_port->txfifo.fifo) {
|
|
edge_close(port);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Allocate a URB for the write */
|
|
edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
edge_port->write_in_progress = false;
|
|
|
|
if (!edge_port->write_urb) {
|
|
edge_close(port);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
|
|
__func__, edge_port->maxTxCredits);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
*
|
|
* block_until_chase_response
|
|
*
|
|
* This function will block the close until one of the following:
|
|
* 1. Response to our Chase comes from Edgeport
|
|
* 2. A timeout of 10 seconds without activity has expired
|
|
* (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
|
|
*
|
|
************************************************************************/
|
|
static void block_until_chase_response(struct edgeport_port *edge_port)
|
|
{
|
|
struct device *dev = &edge_port->port->dev;
|
|
DEFINE_WAIT(wait);
|
|
__u16 lastCredits;
|
|
int timeout = 1*HZ;
|
|
int loop = 10;
|
|
|
|
while (1) {
|
|
/* Save Last credits */
|
|
lastCredits = edge_port->txCredits;
|
|
|
|
/* Did we get our Chase response */
|
|
if (!edge_port->chaseResponsePending) {
|
|
dev_dbg(dev, "%s - Got Chase Response\n", __func__);
|
|
|
|
/* did we get all of our credit back? */
|
|
if (edge_port->txCredits == edge_port->maxTxCredits) {
|
|
dev_dbg(dev, "%s - Got all credits\n", __func__);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Block the thread for a while */
|
|
prepare_to_wait(&edge_port->wait_chase, &wait,
|
|
TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(timeout);
|
|
finish_wait(&edge_port->wait_chase, &wait);
|
|
|
|
if (lastCredits == edge_port->txCredits) {
|
|
/* No activity.. count down. */
|
|
loop--;
|
|
if (loop == 0) {
|
|
edge_port->chaseResponsePending = false;
|
|
dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
|
|
return;
|
|
}
|
|
} else {
|
|
/* Reset timeout value back to 10 seconds */
|
|
dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
|
|
lastCredits, edge_port->txCredits);
|
|
loop = 10;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
*
|
|
* block_until_tx_empty
|
|
*
|
|
* This function will block the close until one of the following:
|
|
* 1. TX count are 0
|
|
* 2. The edgeport has stopped
|
|
* 3. A timeout of 3 seconds without activity has expired
|
|
*
|
|
************************************************************************/
|
|
static void block_until_tx_empty(struct edgeport_port *edge_port)
|
|
{
|
|
struct device *dev = &edge_port->port->dev;
|
|
DEFINE_WAIT(wait);
|
|
struct TxFifo *fifo = &edge_port->txfifo;
|
|
__u32 lastCount;
|
|
int timeout = HZ/10;
|
|
int loop = 30;
|
|
|
|
while (1) {
|
|
/* Save Last count */
|
|
lastCount = fifo->count;
|
|
|
|
/* Is the Edgeport Buffer empty? */
|
|
if (lastCount == 0) {
|
|
dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* Block the thread for a while */
|
|
prepare_to_wait(&edge_port->wait_chase, &wait,
|
|
TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(timeout);
|
|
finish_wait(&edge_port->wait_chase, &wait);
|
|
|
|
dev_dbg(dev, "%s wait\n", __func__);
|
|
|
|
if (lastCount == fifo->count) {
|
|
/* No activity.. count down. */
|
|
loop--;
|
|
if (loop == 0) {
|
|
dev_dbg(dev, "%s - TIMEOUT\n", __func__);
|
|
return;
|
|
}
|
|
} else {
|
|
/* Reset timeout value back to seconds */
|
|
loop = 30;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_close
|
|
* this function is called by the tty driver when a port is closed
|
|
*****************************************************************************/
|
|
static void edge_close(struct usb_serial_port *port)
|
|
{
|
|
struct edgeport_serial *edge_serial;
|
|
struct edgeport_port *edge_port;
|
|
int status;
|
|
|
|
edge_serial = usb_get_serial_data(port->serial);
|
|
edge_port = usb_get_serial_port_data(port);
|
|
if (edge_serial == NULL || edge_port == NULL)
|
|
return;
|
|
|
|
/* block until tx is empty */
|
|
block_until_tx_empty(edge_port);
|
|
|
|
edge_port->closePending = true;
|
|
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPChase))) {
|
|
/* flush and chase */
|
|
edge_port->chaseResponsePending = true;
|
|
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
|
|
status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
|
|
if (status == 0)
|
|
/* block until chase finished */
|
|
block_until_chase_response(edge_port);
|
|
else
|
|
edge_port->chaseResponsePending = false;
|
|
}
|
|
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPClose))) {
|
|
/* close the port */
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
|
|
send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
|
|
}
|
|
|
|
/* port->close = true; */
|
|
edge_port->closePending = false;
|
|
edge_port->open = false;
|
|
edge_port->openPending = false;
|
|
|
|
usb_kill_urb(edge_port->write_urb);
|
|
|
|
if (edge_port->write_urb) {
|
|
/* if this urb had a transfer buffer already
|
|
(old transfer) free it */
|
|
kfree(edge_port->write_urb->transfer_buffer);
|
|
usb_free_urb(edge_port->write_urb);
|
|
edge_port->write_urb = NULL;
|
|
}
|
|
kfree(edge_port->txfifo.fifo);
|
|
edge_port->txfifo.fifo = NULL;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* SerialWrite
|
|
* this function is called by the tty driver when data should be written
|
|
* to the port.
|
|
* If successful, we return the number of bytes written, otherwise we
|
|
* return a negative error number.
|
|
*****************************************************************************/
|
|
static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
|
|
const unsigned char *data, int count)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct TxFifo *fifo;
|
|
int copySize;
|
|
int bytesleft;
|
|
int firsthalf;
|
|
int secondhalf;
|
|
unsigned long flags;
|
|
|
|
if (edge_port == NULL)
|
|
return -ENODEV;
|
|
|
|
/* get a pointer to the Tx fifo */
|
|
fifo = &edge_port->txfifo;
|
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags);
|
|
|
|
/* calculate number of bytes to put in fifo */
|
|
copySize = min((unsigned int)count,
|
|
(edge_port->txCredits - fifo->count));
|
|
|
|
dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
|
|
__func__, count, edge_port->txCredits - fifo->count, copySize);
|
|
|
|
/* catch writes of 0 bytes which the tty driver likes to give us,
|
|
and when txCredits is empty */
|
|
if (copySize == 0) {
|
|
dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
|
|
goto finish_write;
|
|
}
|
|
|
|
/* queue the data
|
|
* since we can never overflow the buffer we do not have to check for a
|
|
* full condition
|
|
*
|
|
* the copy is done is two parts -- first fill to the end of the buffer
|
|
* then copy the reset from the start of the buffer
|
|
*/
|
|
bytesleft = fifo->size - fifo->head;
|
|
firsthalf = min(bytesleft, copySize);
|
|
dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
|
|
firsthalf, bytesleft);
|
|
|
|
/* now copy our data */
|
|
memcpy(&fifo->fifo[fifo->head], data, firsthalf);
|
|
usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
|
|
|
|
/* update the index and size */
|
|
fifo->head += firsthalf;
|
|
fifo->count += firsthalf;
|
|
|
|
/* wrap the index */
|
|
if (fifo->head == fifo->size)
|
|
fifo->head = 0;
|
|
|
|
secondhalf = copySize-firsthalf;
|
|
|
|
if (secondhalf) {
|
|
dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
|
|
memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
|
|
usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
|
|
/* update the index and size */
|
|
fifo->count += secondhalf;
|
|
fifo->head += secondhalf;
|
|
/* No need to check for wrap since we can not get to end of
|
|
* the fifo in this part
|
|
*/
|
|
}
|
|
|
|
finish_write:
|
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
|
|
|
|
send_more_port_data((struct edgeport_serial *)
|
|
usb_get_serial_data(port->serial), edge_port);
|
|
|
|
dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
|
|
__func__, copySize, edge_port->txCredits, fifo->count);
|
|
|
|
return copySize;
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
*
|
|
* send_more_port_data()
|
|
*
|
|
* This routine attempts to write additional UART transmit data
|
|
* to a port over the USB bulk pipe. It is called (1) when new
|
|
* data has been written to a port's TxBuffer from higher layers
|
|
* (2) when the peripheral sends us additional TxCredits indicating
|
|
* that it can accept more Tx data for a given port; and (3) when
|
|
* a bulk write completes successfully and we want to see if we
|
|
* can transmit more.
|
|
*
|
|
************************************************************************/
|
|
static void send_more_port_data(struct edgeport_serial *edge_serial,
|
|
struct edgeport_port *edge_port)
|
|
{
|
|
struct TxFifo *fifo = &edge_port->txfifo;
|
|
struct device *dev = &edge_port->port->dev;
|
|
struct urb *urb;
|
|
unsigned char *buffer;
|
|
int status;
|
|
int count;
|
|
int bytesleft;
|
|
int firsthalf;
|
|
int secondhalf;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags);
|
|
|
|
if (edge_port->write_in_progress ||
|
|
!edge_port->open ||
|
|
(fifo->count == 0)) {
|
|
dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
|
|
__func__, fifo->count, edge_port->write_in_progress);
|
|
goto exit_send;
|
|
}
|
|
|
|
/* since the amount of data in the fifo will always fit into the
|
|
* edgeport buffer we do not need to check the write length
|
|
*
|
|
* Do we have enough credits for this port to make it worthwhile
|
|
* to bother queueing a write. If it's too small, say a few bytes,
|
|
* it's better to wait for more credits so we can do a larger write.
|
|
*/
|
|
if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
|
|
dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
|
|
__func__, fifo->count, edge_port->txCredits);
|
|
goto exit_send;
|
|
}
|
|
|
|
/* lock this write */
|
|
edge_port->write_in_progress = true;
|
|
|
|
/* get a pointer to the write_urb */
|
|
urb = edge_port->write_urb;
|
|
|
|
/* make sure transfer buffer is freed */
|
|
kfree(urb->transfer_buffer);
|
|
urb->transfer_buffer = NULL;
|
|
|
|
/* build the data header for the buffer and port that we are about
|
|
to send out */
|
|
count = fifo->count;
|
|
buffer = kmalloc(count+2, GFP_ATOMIC);
|
|
if (!buffer) {
|
|
edge_port->write_in_progress = false;
|
|
goto exit_send;
|
|
}
|
|
buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
|
|
buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
|
|
|
|
/* now copy our data */
|
|
bytesleft = fifo->size - fifo->tail;
|
|
firsthalf = min(bytesleft, count);
|
|
memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
|
|
fifo->tail += firsthalf;
|
|
fifo->count -= firsthalf;
|
|
if (fifo->tail == fifo->size)
|
|
fifo->tail = 0;
|
|
|
|
secondhalf = count-firsthalf;
|
|
if (secondhalf) {
|
|
memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
|
|
secondhalf);
|
|
fifo->tail += secondhalf;
|
|
fifo->count -= secondhalf;
|
|
}
|
|
|
|
if (count)
|
|
usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
|
|
|
|
/* fill up the urb with all of our data and submit it */
|
|
usb_fill_bulk_urb(urb, edge_serial->serial->dev,
|
|
usb_sndbulkpipe(edge_serial->serial->dev,
|
|
edge_serial->bulk_out_endpoint),
|
|
buffer, count+2,
|
|
edge_bulk_out_data_callback, edge_port);
|
|
|
|
/* decrement the number of credits we have by the number we just sent */
|
|
edge_port->txCredits -= count;
|
|
edge_port->port->icount.tx += count;
|
|
|
|
status = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (status) {
|
|
/* something went wrong */
|
|
dev_err_console(edge_port->port,
|
|
"%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
|
|
__func__, status);
|
|
edge_port->write_in_progress = false;
|
|
|
|
/* revert the credits as something bad happened. */
|
|
edge_port->txCredits += count;
|
|
edge_port->port->icount.tx -= count;
|
|
}
|
|
dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
|
|
__func__, count, edge_port->txCredits, fifo->count);
|
|
|
|
exit_send:
|
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_write_room
|
|
* this function is called by the tty driver when it wants to know how
|
|
* many bytes of data we can accept for a specific port. If successful,
|
|
* we return the amount of room that we have for this port (the txCredits)
|
|
* otherwise we return a negative error number.
|
|
*****************************************************************************/
|
|
static int edge_write_room(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
int room;
|
|
unsigned long flags;
|
|
|
|
if (edge_port == NULL)
|
|
return 0;
|
|
if (edge_port->closePending)
|
|
return 0;
|
|
|
|
if (!edge_port->open) {
|
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/* total of both buffers is still txCredit */
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags);
|
|
room = edge_port->txCredits - edge_port->txfifo.count;
|
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
|
|
|
|
dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
|
|
return room;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_chars_in_buffer
|
|
* this function is called by the tty driver when it wants to know how
|
|
* many bytes of data we currently have outstanding in the port (data that
|
|
* has been written, but hasn't made it out the port yet)
|
|
* If successful, we return the number of bytes left to be written in the
|
|
* system,
|
|
* Otherwise we return a negative error number.
|
|
*****************************************************************************/
|
|
static int edge_chars_in_buffer(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
int num_chars;
|
|
unsigned long flags;
|
|
|
|
if (edge_port == NULL)
|
|
return 0;
|
|
if (edge_port->closePending)
|
|
return 0;
|
|
|
|
if (!edge_port->open) {
|
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags);
|
|
num_chars = edge_port->maxTxCredits - edge_port->txCredits +
|
|
edge_port->txfifo.count;
|
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
|
|
if (num_chars) {
|
|
dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
|
|
}
|
|
|
|
return num_chars;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* SerialThrottle
|
|
* this function is called by the tty driver when it wants to stop the data
|
|
* being read from the port.
|
|
*****************************************************************************/
|
|
static void edge_throttle(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
int status;
|
|
|
|
if (edge_port == NULL)
|
|
return;
|
|
|
|
if (!edge_port->open) {
|
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* if we are implementing XON/XOFF, send the stop character */
|
|
if (I_IXOFF(tty)) {
|
|
unsigned char stop_char = STOP_CHAR(tty);
|
|
status = edge_write(tty, port, &stop_char, 1);
|
|
if (status <= 0)
|
|
return;
|
|
}
|
|
|
|
/* if we are implementing RTS/CTS, toggle that line */
|
|
if (tty->termios.c_cflag & CRTSCTS) {
|
|
edge_port->shadowMCR &= ~MCR_RTS;
|
|
status = send_cmd_write_uart_register(edge_port, MCR,
|
|
edge_port->shadowMCR);
|
|
if (status != 0)
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_unthrottle
|
|
* this function is called by the tty driver when it wants to resume the
|
|
* data being read from the port (called after SerialThrottle is called)
|
|
*****************************************************************************/
|
|
static void edge_unthrottle(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
int status;
|
|
|
|
if (edge_port == NULL)
|
|
return;
|
|
|
|
if (!edge_port->open) {
|
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* if we are implementing XON/XOFF, send the start character */
|
|
if (I_IXOFF(tty)) {
|
|
unsigned char start_char = START_CHAR(tty);
|
|
status = edge_write(tty, port, &start_char, 1);
|
|
if (status <= 0)
|
|
return;
|
|
}
|
|
/* if we are implementing RTS/CTS, toggle that line */
|
|
if (tty->termios.c_cflag & CRTSCTS) {
|
|
edge_port->shadowMCR |= MCR_RTS;
|
|
send_cmd_write_uart_register(edge_port, MCR,
|
|
edge_port->shadowMCR);
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* SerialSetTermios
|
|
* this function is called by the tty driver when it wants to change
|
|
* the termios structure
|
|
*****************************************************************************/
|
|
static void edge_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port, struct ktermios *old_termios)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
unsigned int cflag;
|
|
|
|
cflag = tty->termios.c_cflag;
|
|
dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag);
|
|
dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag);
|
|
|
|
if (edge_port == NULL)
|
|
return;
|
|
|
|
if (!edge_port->open) {
|
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* change the port settings to the new ones specified */
|
|
change_port_settings(tty, edge_port, old_termios);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* get_lsr_info - get line status register info
|
|
*
|
|
* Purpose: Let user call ioctl() to get info when the UART physically
|
|
* is emptied. On bus types like RS485, the transmitter must
|
|
* release the bus after transmitting. This must be done when
|
|
* the transmit shift register is empty, not be done when the
|
|
* transmit holding register is empty. This functionality
|
|
* allows an RS485 driver to be written in user space.
|
|
*****************************************************************************/
|
|
static int get_lsr_info(struct edgeport_port *edge_port,
|
|
unsigned int __user *value)
|
|
{
|
|
unsigned int result = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags);
|
|
if (edge_port->maxTxCredits == edge_port->txCredits &&
|
|
edge_port->txfifo.count == 0) {
|
|
dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
|
|
result = TIOCSER_TEMT;
|
|
}
|
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
|
|
|
|
if (copy_to_user(value, &result, sizeof(int)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int edge_tiocmset(struct tty_struct *tty,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
unsigned int mcr;
|
|
|
|
mcr = edge_port->shadowMCR;
|
|
if (set & TIOCM_RTS)
|
|
mcr |= MCR_RTS;
|
|
if (set & TIOCM_DTR)
|
|
mcr |= MCR_DTR;
|
|
if (set & TIOCM_LOOP)
|
|
mcr |= MCR_LOOPBACK;
|
|
|
|
if (clear & TIOCM_RTS)
|
|
mcr &= ~MCR_RTS;
|
|
if (clear & TIOCM_DTR)
|
|
mcr &= ~MCR_DTR;
|
|
if (clear & TIOCM_LOOP)
|
|
mcr &= ~MCR_LOOPBACK;
|
|
|
|
edge_port->shadowMCR = mcr;
|
|
|
|
send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int edge_tiocmget(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
unsigned int result = 0;
|
|
unsigned int msr;
|
|
unsigned int mcr;
|
|
|
|
msr = edge_port->shadowMSR;
|
|
mcr = edge_port->shadowMCR;
|
|
result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
|
|
| ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
|
|
| ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
|
|
| ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
|
|
| ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
|
|
| ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
|
|
|
|
return result;
|
|
}
|
|
|
|
static int get_serial_info(struct edgeport_port *edge_port,
|
|
struct serial_struct __user *retinfo)
|
|
{
|
|
struct serial_struct tmp;
|
|
|
|
if (!retinfo)
|
|
return -EFAULT;
|
|
|
|
memset(&tmp, 0, sizeof(tmp));
|
|
|
|
tmp.type = PORT_16550A;
|
|
tmp.line = edge_port->port->minor;
|
|
tmp.port = edge_port->port->port_number;
|
|
tmp.irq = 0;
|
|
tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
|
|
tmp.xmit_fifo_size = edge_port->maxTxCredits;
|
|
tmp.baud_base = 9600;
|
|
tmp.close_delay = 5*HZ;
|
|
tmp.closing_wait = 30*HZ;
|
|
|
|
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* SerialIoctl
|
|
* this function handles any ioctl calls to the driver
|
|
*****************************************************************************/
|
|
static int edge_ioctl(struct tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
DEFINE_WAIT(wait);
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
|
|
switch (cmd) {
|
|
case TIOCSERGETLSR:
|
|
dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
|
|
return get_lsr_info(edge_port, (unsigned int __user *) arg);
|
|
|
|
case TIOCGSERIAL:
|
|
dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
|
|
return get_serial_info(edge_port, (struct serial_struct __user *) arg);
|
|
}
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* SerialBreak
|
|
* this function sends a break to the port
|
|
*****************************************************************************/
|
|
static void edge_break(struct tty_struct *tty, int break_state)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
|
|
int status;
|
|
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPChase))) {
|
|
/* flush and chase */
|
|
edge_port->chaseResponsePending = true;
|
|
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
|
|
status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
|
|
if (status == 0) {
|
|
/* block until chase finished */
|
|
block_until_chase_response(edge_port);
|
|
} else {
|
|
edge_port->chaseResponsePending = false;
|
|
}
|
|
}
|
|
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
|
|
if (break_state == -1) {
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
|
|
status = send_iosp_ext_cmd(edge_port,
|
|
IOSP_CMD_SET_BREAK, 0);
|
|
} else {
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
|
|
status = send_iosp_ext_cmd(edge_port,
|
|
IOSP_CMD_CLEAR_BREAK, 0);
|
|
}
|
|
if (status)
|
|
dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
|
|
__func__);
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* process_rcvd_data
|
|
* this function handles the data received on the bulk in pipe.
|
|
*****************************************************************************/
|
|
static void process_rcvd_data(struct edgeport_serial *edge_serial,
|
|
unsigned char *buffer, __u16 bufferLength)
|
|
{
|
|
struct device *dev = &edge_serial->serial->dev->dev;
|
|
struct usb_serial_port *port;
|
|
struct edgeport_port *edge_port;
|
|
__u16 lastBufferLength;
|
|
__u16 rxLen;
|
|
|
|
lastBufferLength = bufferLength + 1;
|
|
|
|
while (bufferLength > 0) {
|
|
/* failsafe incase we get a message that we don't understand */
|
|
if (lastBufferLength == bufferLength) {
|
|
dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
|
|
break;
|
|
}
|
|
lastBufferLength = bufferLength;
|
|
|
|
switch (edge_serial->rxState) {
|
|
case EXPECT_HDR1:
|
|
edge_serial->rxHeader1 = *buffer;
|
|
++buffer;
|
|
--bufferLength;
|
|
|
|
if (bufferLength == 0) {
|
|
edge_serial->rxState = EXPECT_HDR2;
|
|
break;
|
|
}
|
|
/* otherwise, drop on through */
|
|
case EXPECT_HDR2:
|
|
edge_serial->rxHeader2 = *buffer;
|
|
++buffer;
|
|
--bufferLength;
|
|
|
|
dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
|
|
edge_serial->rxHeader1, edge_serial->rxHeader2);
|
|
/* Process depending on whether this header is
|
|
* data or status */
|
|
|
|
if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
|
|
/* Decode this status header and go to
|
|
* EXPECT_HDR1 (if we can process the status
|
|
* with only 2 bytes), or go to EXPECT_HDR3 to
|
|
* get the third byte. */
|
|
edge_serial->rxPort =
|
|
IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
|
|
edge_serial->rxStatusCode =
|
|
IOSP_GET_STATUS_CODE(
|
|
edge_serial->rxHeader1);
|
|
|
|
if (!IOSP_STATUS_IS_2BYTE(
|
|
edge_serial->rxStatusCode)) {
|
|
/* This status needs additional bytes.
|
|
* Save what we have and then wait for
|
|
* more data.
|
|
*/
|
|
edge_serial->rxStatusParam
|
|
= edge_serial->rxHeader2;
|
|
edge_serial->rxState = EXPECT_HDR3;
|
|
break;
|
|
}
|
|
/* We have all the header bytes, process the
|
|
status now */
|
|
process_rcvd_status(edge_serial,
|
|
edge_serial->rxHeader2, 0);
|
|
edge_serial->rxState = EXPECT_HDR1;
|
|
break;
|
|
} else {
|
|
edge_serial->rxPort =
|
|
IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
|
|
edge_serial->rxBytesRemaining =
|
|
IOSP_GET_HDR_DATA_LEN(
|
|
edge_serial->rxHeader1,
|
|
edge_serial->rxHeader2);
|
|
dev_dbg(dev, "%s - Data for Port %u Len %u\n",
|
|
__func__,
|
|
edge_serial->rxPort,
|
|
edge_serial->rxBytesRemaining);
|
|
|
|
/* ASSERT(DevExt->RxPort < DevExt->NumPorts);
|
|
* ASSERT(DevExt->RxBytesRemaining <
|
|
* IOSP_MAX_DATA_LENGTH);
|
|
*/
|
|
|
|
if (bufferLength == 0) {
|
|
edge_serial->rxState = EXPECT_DATA;
|
|
break;
|
|
}
|
|
/* Else, drop through */
|
|
}
|
|
case EXPECT_DATA: /* Expect data */
|
|
if (bufferLength < edge_serial->rxBytesRemaining) {
|
|
rxLen = bufferLength;
|
|
/* Expect data to start next buffer */
|
|
edge_serial->rxState = EXPECT_DATA;
|
|
} else {
|
|
/* BufLen >= RxBytesRemaining */
|
|
rxLen = edge_serial->rxBytesRemaining;
|
|
/* Start another header next time */
|
|
edge_serial->rxState = EXPECT_HDR1;
|
|
}
|
|
|
|
bufferLength -= rxLen;
|
|
edge_serial->rxBytesRemaining -= rxLen;
|
|
|
|
/* spit this data back into the tty driver if this
|
|
port is open */
|
|
if (rxLen) {
|
|
port = edge_serial->serial->port[
|
|
edge_serial->rxPort];
|
|
edge_port = usb_get_serial_port_data(port);
|
|
if (edge_port->open) {
|
|
dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
|
|
__func__, rxLen,
|
|
edge_serial->rxPort);
|
|
edge_tty_recv(edge_port->port, buffer,
|
|
rxLen);
|
|
edge_port->port->icount.rx += rxLen;
|
|
}
|
|
buffer += rxLen;
|
|
}
|
|
break;
|
|
|
|
case EXPECT_HDR3: /* Expect 3rd byte of status header */
|
|
edge_serial->rxHeader3 = *buffer;
|
|
++buffer;
|
|
--bufferLength;
|
|
|
|
/* We have all the header bytes, process the
|
|
status now */
|
|
process_rcvd_status(edge_serial,
|
|
edge_serial->rxStatusParam,
|
|
edge_serial->rxHeader3);
|
|
edge_serial->rxState = EXPECT_HDR1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* process_rcvd_status
|
|
* this function handles the any status messages received on the
|
|
* bulk in pipe.
|
|
*****************************************************************************/
|
|
static void process_rcvd_status(struct edgeport_serial *edge_serial,
|
|
__u8 byte2, __u8 byte3)
|
|
{
|
|
struct usb_serial_port *port;
|
|
struct edgeport_port *edge_port;
|
|
struct tty_struct *tty;
|
|
struct device *dev;
|
|
__u8 code = edge_serial->rxStatusCode;
|
|
|
|
/* switch the port pointer to the one being currently talked about */
|
|
port = edge_serial->serial->port[edge_serial->rxPort];
|
|
edge_port = usb_get_serial_port_data(port);
|
|
if (edge_port == NULL) {
|
|
dev_err(&edge_serial->serial->dev->dev,
|
|
"%s - edge_port == NULL for port %d\n",
|
|
__func__, edge_serial->rxPort);
|
|
return;
|
|
}
|
|
dev = &port->dev;
|
|
|
|
if (code == IOSP_EXT_STATUS) {
|
|
switch (byte2) {
|
|
case IOSP_EXT_STATUS_CHASE_RSP:
|
|
/* we want to do EXT status regardless of port
|
|
* open/closed */
|
|
dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
|
|
__func__, edge_serial->rxPort, byte3);
|
|
/* Currently, the only EXT_STATUS is Chase, so process
|
|
* here instead of one more call to one more subroutine
|
|
* If/when more EXT_STATUS, there'll be more work to do
|
|
* Also, we currently clear flag and close the port
|
|
* regardless of content of above's Byte3.
|
|
* We could choose to do something else when Byte3 says
|
|
* Timeout on Chase from Edgeport, like wait longer in
|
|
* block_until_chase_response, but for now we don't.
|
|
*/
|
|
edge_port->chaseResponsePending = false;
|
|
wake_up(&edge_port->wait_chase);
|
|
return;
|
|
|
|
case IOSP_EXT_STATUS_RX_CHECK_RSP:
|
|
dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
|
|
__func__, edge_serial->rxPort, byte3);
|
|
/* Port->RxCheckRsp = true; */
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (code == IOSP_STATUS_OPEN_RSP) {
|
|
edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
|
|
edge_port->maxTxCredits = edge_port->txCredits;
|
|
dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
|
|
__func__, edge_serial->rxPort, byte2, edge_port->txCredits);
|
|
handle_new_msr(edge_port, byte2);
|
|
|
|
/* send the current line settings to the port so we are
|
|
in sync with any further termios calls */
|
|
tty = tty_port_tty_get(&edge_port->port->port);
|
|
if (tty) {
|
|
change_port_settings(tty,
|
|
edge_port, &tty->termios);
|
|
tty_kref_put(tty);
|
|
}
|
|
|
|
/* we have completed the open */
|
|
edge_port->openPending = false;
|
|
edge_port->open = true;
|
|
wake_up(&edge_port->wait_open);
|
|
return;
|
|
}
|
|
|
|
/* If port is closed, silently discard all rcvd status. We can
|
|
* have cases where buffered status is received AFTER the close
|
|
* port command is sent to the Edgeport.
|
|
*/
|
|
if (!edge_port->open || edge_port->closePending)
|
|
return;
|
|
|
|
switch (code) {
|
|
/* Not currently sent by Edgeport */
|
|
case IOSP_STATUS_LSR:
|
|
dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
|
|
__func__, edge_serial->rxPort, byte2);
|
|
handle_new_lsr(edge_port, false, byte2, 0);
|
|
break;
|
|
|
|
case IOSP_STATUS_LSR_DATA:
|
|
dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
|
|
__func__, edge_serial->rxPort, byte2, byte3);
|
|
/* byte2 is LSR Register */
|
|
/* byte3 is broken data byte */
|
|
handle_new_lsr(edge_port, true, byte2, byte3);
|
|
break;
|
|
/*
|
|
* case IOSP_EXT_4_STATUS:
|
|
* dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
|
|
* __func__, edge_serial->rxPort, byte2, byte3);
|
|
* break;
|
|
*/
|
|
case IOSP_STATUS_MSR:
|
|
dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
|
|
__func__, edge_serial->rxPort, byte2);
|
|
/*
|
|
* Process this new modem status and generate appropriate
|
|
* events, etc, based on the new status. This routine
|
|
* also saves the MSR in Port->ShadowMsr.
|
|
*/
|
|
handle_new_msr(edge_port, byte2);
|
|
break;
|
|
|
|
default:
|
|
dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_tty_recv
|
|
* this function passes data on to the tty flip buffer
|
|
*****************************************************************************/
|
|
static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
|
|
int length)
|
|
{
|
|
int cnt;
|
|
|
|
cnt = tty_insert_flip_string(&port->port, data, length);
|
|
if (cnt < length) {
|
|
dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
|
|
__func__, length - cnt);
|
|
}
|
|
data += cnt;
|
|
length -= cnt;
|
|
|
|
tty_flip_buffer_push(&port->port);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* handle_new_msr
|
|
* this function handles any change to the msr register for a port.
|
|
*****************************************************************************/
|
|
static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
|
|
{
|
|
struct async_icount *icount;
|
|
|
|
if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
|
|
EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
|
|
icount = &edge_port->port->icount;
|
|
|
|
/* update input line counters */
|
|
if (newMsr & EDGEPORT_MSR_DELTA_CTS)
|
|
icount->cts++;
|
|
if (newMsr & EDGEPORT_MSR_DELTA_DSR)
|
|
icount->dsr++;
|
|
if (newMsr & EDGEPORT_MSR_DELTA_CD)
|
|
icount->dcd++;
|
|
if (newMsr & EDGEPORT_MSR_DELTA_RI)
|
|
icount->rng++;
|
|
wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
|
|
}
|
|
|
|
/* Save the new modem status */
|
|
edge_port->shadowMSR = newMsr & 0xf0;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* handle_new_lsr
|
|
* this function handles any change to the lsr register for a port.
|
|
*****************************************************************************/
|
|
static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
|
|
__u8 lsr, __u8 data)
|
|
{
|
|
__u8 newLsr = (__u8) (lsr & (__u8)
|
|
(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
|
|
struct async_icount *icount;
|
|
|
|
edge_port->shadowLSR = lsr;
|
|
|
|
if (newLsr & LSR_BREAK) {
|
|
/*
|
|
* Parity and Framing errors only count if they
|
|
* occur exclusive of a break being
|
|
* received.
|
|
*/
|
|
newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
|
|
}
|
|
|
|
/* Place LSR data byte into Rx buffer */
|
|
if (lsrData)
|
|
edge_tty_recv(edge_port->port, &data, 1);
|
|
|
|
/* update input line counters */
|
|
icount = &edge_port->port->icount;
|
|
if (newLsr & LSR_BREAK)
|
|
icount->brk++;
|
|
if (newLsr & LSR_OVER_ERR)
|
|
icount->overrun++;
|
|
if (newLsr & LSR_PAR_ERR)
|
|
icount->parity++;
|
|
if (newLsr & LSR_FRM_ERR)
|
|
icount->frame++;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* sram_write
|
|
* writes a number of bytes to the Edgeport device's sram starting at the
|
|
* given address.
|
|
* If successful returns the number of bytes written, otherwise it returns
|
|
* a negative error number of the problem.
|
|
****************************************************************************/
|
|
static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
|
|
__u16 length, const __u8 *data)
|
|
{
|
|
int result;
|
|
__u16 current_length;
|
|
unsigned char *transfer_buffer;
|
|
|
|
dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
|
|
|
|
transfer_buffer = kmalloc(64, GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOMEM;
|
|
|
|
/* need to split these writes up into 64 byte chunks */
|
|
result = 0;
|
|
while (length > 0) {
|
|
if (length > 64)
|
|
current_length = 64;
|
|
else
|
|
current_length = length;
|
|
|
|
/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
|
|
memcpy(transfer_buffer, data, current_length);
|
|
result = usb_control_msg(serial->dev,
|
|
usb_sndctrlpipe(serial->dev, 0),
|
|
USB_REQUEST_ION_WRITE_RAM,
|
|
0x40, addr, extAddr, transfer_buffer,
|
|
current_length, 300);
|
|
if (result < 0)
|
|
break;
|
|
length -= current_length;
|
|
addr += current_length;
|
|
data += current_length;
|
|
}
|
|
|
|
kfree(transfer_buffer);
|
|
return result;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* rom_write
|
|
* writes a number of bytes to the Edgeport device's ROM starting at the
|
|
* given address.
|
|
* If successful returns the number of bytes written, otherwise it returns
|
|
* a negative error number of the problem.
|
|
****************************************************************************/
|
|
static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
|
|
__u16 length, const __u8 *data)
|
|
{
|
|
int result;
|
|
__u16 current_length;
|
|
unsigned char *transfer_buffer;
|
|
|
|
transfer_buffer = kmalloc(64, GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOMEM;
|
|
|
|
/* need to split these writes up into 64 byte chunks */
|
|
result = 0;
|
|
while (length > 0) {
|
|
if (length > 64)
|
|
current_length = 64;
|
|
else
|
|
current_length = length;
|
|
memcpy(transfer_buffer, data, current_length);
|
|
result = usb_control_msg(serial->dev,
|
|
usb_sndctrlpipe(serial->dev, 0),
|
|
USB_REQUEST_ION_WRITE_ROM, 0x40,
|
|
addr, extAddr,
|
|
transfer_buffer, current_length, 300);
|
|
if (result < 0)
|
|
break;
|
|
length -= current_length;
|
|
addr += current_length;
|
|
data += current_length;
|
|
}
|
|
|
|
kfree(transfer_buffer);
|
|
return result;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* rom_read
|
|
* reads a number of bytes from the Edgeport device starting at the given
|
|
* address.
|
|
* If successful returns the number of bytes read, otherwise it returns
|
|
* a negative error number of the problem.
|
|
****************************************************************************/
|
|
static int rom_read(struct usb_serial *serial, __u16 extAddr,
|
|
__u16 addr, __u16 length, __u8 *data)
|
|
{
|
|
int result;
|
|
__u16 current_length;
|
|
unsigned char *transfer_buffer;
|
|
|
|
transfer_buffer = kmalloc(64, GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOMEM;
|
|
|
|
/* need to split these reads up into 64 byte chunks */
|
|
result = 0;
|
|
while (length > 0) {
|
|
if (length > 64)
|
|
current_length = 64;
|
|
else
|
|
current_length = length;
|
|
result = usb_control_msg(serial->dev,
|
|
usb_rcvctrlpipe(serial->dev, 0),
|
|
USB_REQUEST_ION_READ_ROM,
|
|
0xC0, addr, extAddr, transfer_buffer,
|
|
current_length, 300);
|
|
if (result < 0)
|
|
break;
|
|
memcpy(data, transfer_buffer, current_length);
|
|
length -= current_length;
|
|
addr += current_length;
|
|
data += current_length;
|
|
}
|
|
|
|
kfree(transfer_buffer);
|
|
return result;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* send_iosp_ext_cmd
|
|
* Is used to send a IOSP message to the Edgeport device
|
|
****************************************************************************/
|
|
static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
|
|
__u8 command, __u8 param)
|
|
{
|
|
unsigned char *buffer;
|
|
unsigned char *currentCommand;
|
|
int length = 0;
|
|
int status = 0;
|
|
|
|
buffer = kmalloc(10, GFP_ATOMIC);
|
|
if (!buffer)
|
|
return -ENOMEM;
|
|
|
|
currentCommand = buffer;
|
|
|
|
MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
|
|
command, param);
|
|
|
|
status = write_cmd_usb(edge_port, buffer, length);
|
|
if (status) {
|
|
/* something bad happened, let's free up the memory */
|
|
kfree(buffer);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* write_cmd_usb
|
|
* this function writes the given buffer out to the bulk write endpoint.
|
|
*****************************************************************************/
|
|
static int write_cmd_usb(struct edgeport_port *edge_port,
|
|
unsigned char *buffer, int length)
|
|
{
|
|
struct edgeport_serial *edge_serial =
|
|
usb_get_serial_data(edge_port->port->serial);
|
|
struct device *dev = &edge_port->port->dev;
|
|
int status = 0;
|
|
struct urb *urb;
|
|
|
|
usb_serial_debug_data(dev, __func__, length, buffer);
|
|
|
|
/* Allocate our next urb */
|
|
urb = usb_alloc_urb(0, GFP_ATOMIC);
|
|
if (!urb)
|
|
return -ENOMEM;
|
|
|
|
atomic_inc(&CmdUrbs);
|
|
dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
|
|
__func__, urb, atomic_read(&CmdUrbs));
|
|
|
|
usb_fill_bulk_urb(urb, edge_serial->serial->dev,
|
|
usb_sndbulkpipe(edge_serial->serial->dev,
|
|
edge_serial->bulk_out_endpoint),
|
|
buffer, length, edge_bulk_out_cmd_callback, edge_port);
|
|
|
|
edge_port->commandPending = true;
|
|
status = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
if (status) {
|
|
/* something went wrong */
|
|
dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
|
|
__func__, status);
|
|
usb_kill_urb(urb);
|
|
usb_free_urb(urb);
|
|
atomic_dec(&CmdUrbs);
|
|
return status;
|
|
}
|
|
|
|
#if 0
|
|
wait_event(&edge_port->wait_command, !edge_port->commandPending);
|
|
|
|
if (edge_port->commandPending) {
|
|
/* command timed out */
|
|
dev_dbg(dev, "%s - command timed out\n", __func__);
|
|
status = -EINVAL;
|
|
}
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* send_cmd_write_baud_rate
|
|
* this function sends the proper command to change the baud rate of the
|
|
* specified port.
|
|
*****************************************************************************/
|
|
static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
|
|
int baudRate)
|
|
{
|
|
struct edgeport_serial *edge_serial =
|
|
usb_get_serial_data(edge_port->port->serial);
|
|
struct device *dev = &edge_port->port->dev;
|
|
unsigned char *cmdBuffer;
|
|
unsigned char *currCmd;
|
|
int cmdLen = 0;
|
|
int divisor;
|
|
int status;
|
|
u32 number = edge_port->port->port_number;
|
|
|
|
if (edge_serial->is_epic &&
|
|
!edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
|
|
dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
|
|
baudRate);
|
|
return 0;
|
|
}
|
|
|
|
dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
|
|
|
|
status = calc_baud_rate_divisor(dev, baudRate, &divisor);
|
|
if (status) {
|
|
dev_err(dev, "%s - bad baud rate\n", __func__);
|
|
return status;
|
|
}
|
|
|
|
/* Alloc memory for the string of commands. */
|
|
cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
|
|
if (!cmdBuffer)
|
|
return -ENOMEM;
|
|
|
|
currCmd = cmdBuffer;
|
|
|
|
/* Enable access to divisor latch */
|
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
|
|
|
|
/* Write the divisor itself */
|
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
|
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
|
|
|
|
/* Restore original value to disable access to divisor latch */
|
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
|
|
edge_port->shadowLCR);
|
|
|
|
status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
|
|
if (status) {
|
|
/* something bad happened, let's free up the memory */
|
|
kfree(cmdBuffer);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* calc_baud_rate_divisor
|
|
* this function calculates the proper baud rate divisor for the specified
|
|
* baud rate.
|
|
*****************************************************************************/
|
|
static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
|
|
{
|
|
int i;
|
|
__u16 custom;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
|
|
if (divisor_table[i].BaudRate == baudrate) {
|
|
*divisor = divisor_table[i].Divisor;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* We have tried all of the standard baud rates
|
|
* lets try to calculate the divisor for this baud rate
|
|
* Make sure the baud rate is reasonable */
|
|
if (baudrate > 50 && baudrate < 230400) {
|
|
/* get divisor */
|
|
custom = (__u16)((230400L + baudrate/2) / baudrate);
|
|
|
|
*divisor = custom;
|
|
|
|
dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* send_cmd_write_uart_register
|
|
* this function builds up a uart register message and sends to the device.
|
|
*****************************************************************************/
|
|
static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
|
|
__u8 regNum, __u8 regValue)
|
|
{
|
|
struct edgeport_serial *edge_serial =
|
|
usb_get_serial_data(edge_port->port->serial);
|
|
struct device *dev = &edge_port->port->dev;
|
|
unsigned char *cmdBuffer;
|
|
unsigned char *currCmd;
|
|
unsigned long cmdLen = 0;
|
|
int status;
|
|
|
|
dev_dbg(dev, "%s - write to %s register 0x%02x\n",
|
|
(regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
|
|
|
|
if (edge_serial->is_epic &&
|
|
!edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
|
|
regNum == MCR) {
|
|
dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
|
|
return 0;
|
|
}
|
|
|
|
if (edge_serial->is_epic &&
|
|
!edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
|
|
regNum == LCR) {
|
|
dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Alloc memory for the string of commands. */
|
|
cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
|
|
if (cmdBuffer == NULL)
|
|
return -ENOMEM;
|
|
|
|
currCmd = cmdBuffer;
|
|
|
|
/* Build a cmd in the buffer to write the given register */
|
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
|
|
regNum, regValue);
|
|
|
|
status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
|
|
if (status) {
|
|
/* something bad happened, let's free up the memory */
|
|
kfree(cmdBuffer);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* change_port_settings
|
|
* This routine is called to set the UART on the device to match the
|
|
* specified new settings.
|
|
*****************************************************************************/
|
|
|
|
static void change_port_settings(struct tty_struct *tty,
|
|
struct edgeport_port *edge_port, struct ktermios *old_termios)
|
|
{
|
|
struct device *dev = &edge_port->port->dev;
|
|
struct edgeport_serial *edge_serial =
|
|
usb_get_serial_data(edge_port->port->serial);
|
|
int baud;
|
|
unsigned cflag;
|
|
__u8 mask = 0xff;
|
|
__u8 lData;
|
|
__u8 lParity;
|
|
__u8 lStop;
|
|
__u8 rxFlow;
|
|
__u8 txFlow;
|
|
int status;
|
|
|
|
if (!edge_port->open &&
|
|
!edge_port->openPending) {
|
|
dev_dbg(dev, "%s - port not opened\n", __func__);
|
|
return;
|
|
}
|
|
|
|
cflag = tty->termios.c_cflag;
|
|
|
|
switch (cflag & CSIZE) {
|
|
case CS5:
|
|
lData = LCR_BITS_5; mask = 0x1f;
|
|
dev_dbg(dev, "%s - data bits = 5\n", __func__);
|
|
break;
|
|
case CS6:
|
|
lData = LCR_BITS_6; mask = 0x3f;
|
|
dev_dbg(dev, "%s - data bits = 6\n", __func__);
|
|
break;
|
|
case CS7:
|
|
lData = LCR_BITS_7; mask = 0x7f;
|
|
dev_dbg(dev, "%s - data bits = 7\n", __func__);
|
|
break;
|
|
default:
|
|
case CS8:
|
|
lData = LCR_BITS_8;
|
|
dev_dbg(dev, "%s - data bits = 8\n", __func__);
|
|
break;
|
|
}
|
|
|
|
lParity = LCR_PAR_NONE;
|
|
if (cflag & PARENB) {
|
|
if (cflag & CMSPAR) {
|
|
if (cflag & PARODD) {
|
|
lParity = LCR_PAR_MARK;
|
|
dev_dbg(dev, "%s - parity = mark\n", __func__);
|
|
} else {
|
|
lParity = LCR_PAR_SPACE;
|
|
dev_dbg(dev, "%s - parity = space\n", __func__);
|
|
}
|
|
} else if (cflag & PARODD) {
|
|
lParity = LCR_PAR_ODD;
|
|
dev_dbg(dev, "%s - parity = odd\n", __func__);
|
|
} else {
|
|
lParity = LCR_PAR_EVEN;
|
|
dev_dbg(dev, "%s - parity = even\n", __func__);
|
|
}
|
|
} else {
|
|
dev_dbg(dev, "%s - parity = none\n", __func__);
|
|
}
|
|
|
|
if (cflag & CSTOPB) {
|
|
lStop = LCR_STOP_2;
|
|
dev_dbg(dev, "%s - stop bits = 2\n", __func__);
|
|
} else {
|
|
lStop = LCR_STOP_1;
|
|
dev_dbg(dev, "%s - stop bits = 1\n", __func__);
|
|
}
|
|
|
|
/* figure out the flow control settings */
|
|
rxFlow = txFlow = 0x00;
|
|
if (cflag & CRTSCTS) {
|
|
rxFlow |= IOSP_RX_FLOW_RTS;
|
|
txFlow |= IOSP_TX_FLOW_CTS;
|
|
dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
|
|
} else {
|
|
dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
|
|
}
|
|
|
|
/* if we are implementing XON/XOFF, set the start and stop character
|
|
in the device */
|
|
if (I_IXOFF(tty) || I_IXON(tty)) {
|
|
unsigned char stop_char = STOP_CHAR(tty);
|
|
unsigned char start_char = START_CHAR(tty);
|
|
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
|
|
send_iosp_ext_cmd(edge_port,
|
|
IOSP_CMD_SET_XON_CHAR, start_char);
|
|
send_iosp_ext_cmd(edge_port,
|
|
IOSP_CMD_SET_XOFF_CHAR, stop_char);
|
|
}
|
|
|
|
/* if we are implementing INBOUND XON/XOFF */
|
|
if (I_IXOFF(tty)) {
|
|
rxFlow |= IOSP_RX_FLOW_XON_XOFF;
|
|
dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
|
|
__func__, start_char, stop_char);
|
|
} else {
|
|
dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
|
|
}
|
|
|
|
/* if we are implementing OUTBOUND XON/XOFF */
|
|
if (I_IXON(tty)) {
|
|
txFlow |= IOSP_TX_FLOW_XON_XOFF;
|
|
dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
|
|
__func__, start_char, stop_char);
|
|
} else {
|
|
dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
|
|
}
|
|
}
|
|
|
|
/* Set flow control to the configured value */
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
|
|
send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
|
|
if ((!edge_serial->is_epic) ||
|
|
((edge_serial->is_epic) &&
|
|
(edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
|
|
send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
|
|
|
|
|
|
edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
|
|
edge_port->shadowLCR |= (lData | lParity | lStop);
|
|
|
|
edge_port->validDataMask = mask;
|
|
|
|
/* Send the updated LCR value to the EdgePort */
|
|
status = send_cmd_write_uart_register(edge_port, LCR,
|
|
edge_port->shadowLCR);
|
|
if (status != 0)
|
|
return;
|
|
|
|
/* set up the MCR register and send it to the EdgePort */
|
|
edge_port->shadowMCR = MCR_MASTER_IE;
|
|
if (cflag & CBAUD)
|
|
edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
|
|
|
|
status = send_cmd_write_uart_register(edge_port, MCR,
|
|
edge_port->shadowMCR);
|
|
if (status != 0)
|
|
return;
|
|
|
|
/* Determine divisor based on baud rate */
|
|
baud = tty_get_baud_rate(tty);
|
|
if (!baud) {
|
|
/* pick a default, any default... */
|
|
baud = 9600;
|
|
}
|
|
|
|
dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
|
|
status = send_cmd_write_baud_rate(edge_port, baud);
|
|
if (status == -1) {
|
|
/* Speed change was not possible - put back the old speed */
|
|
baud = tty_termios_baud_rate(old_termios);
|
|
tty_encode_baud_rate(tty, baud, baud);
|
|
}
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* unicode_to_ascii
|
|
* Turns a string from Unicode into ASCII.
|
|
* Doesn't do a good job with any characters that are outside the normal
|
|
* ASCII range, but it's only for debugging...
|
|
* NOTE: expects the unicode in LE format
|
|
****************************************************************************/
|
|
static void unicode_to_ascii(char *string, int buflen,
|
|
__le16 *unicode, int unicode_size)
|
|
{
|
|
int i;
|
|
|
|
if (buflen <= 0) /* never happens, but... */
|
|
return;
|
|
--buflen; /* space for nul */
|
|
|
|
for (i = 0; i < unicode_size; i++) {
|
|
if (i >= buflen)
|
|
break;
|
|
string[i] = (char)(le16_to_cpu(unicode[i]));
|
|
}
|
|
string[i] = 0x00;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* get_manufacturing_desc
|
|
* reads in the manufacturing descriptor and stores it into the serial
|
|
* structure.
|
|
****************************************************************************/
|
|
static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
|
|
{
|
|
struct device *dev = &edge_serial->serial->dev->dev;
|
|
int response;
|
|
|
|
dev_dbg(dev, "getting manufacturer descriptor\n");
|
|
|
|
response = rom_read(edge_serial->serial,
|
|
(EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
|
|
(__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
|
|
EDGE_MANUF_DESC_LEN,
|
|
(__u8 *)(&edge_serial->manuf_descriptor));
|
|
|
|
if (response < 1)
|
|
dev_err(dev, "error in getting manufacturer descriptor\n");
|
|
else {
|
|
char string[30];
|
|
dev_dbg(dev, "**Manufacturer Descriptor\n");
|
|
dev_dbg(dev, " RomSize: %dK\n",
|
|
edge_serial->manuf_descriptor.RomSize);
|
|
dev_dbg(dev, " RamSize: %dK\n",
|
|
edge_serial->manuf_descriptor.RamSize);
|
|
dev_dbg(dev, " CpuRev: %d\n",
|
|
edge_serial->manuf_descriptor.CpuRev);
|
|
dev_dbg(dev, " BoardRev: %d\n",
|
|
edge_serial->manuf_descriptor.BoardRev);
|
|
dev_dbg(dev, " NumPorts: %d\n",
|
|
edge_serial->manuf_descriptor.NumPorts);
|
|
dev_dbg(dev, " DescDate: %d/%d/%d\n",
|
|
edge_serial->manuf_descriptor.DescDate[0],
|
|
edge_serial->manuf_descriptor.DescDate[1],
|
|
edge_serial->manuf_descriptor.DescDate[2]+1900);
|
|
unicode_to_ascii(string, sizeof(string),
|
|
edge_serial->manuf_descriptor.SerialNumber,
|
|
edge_serial->manuf_descriptor.SerNumLength/2);
|
|
dev_dbg(dev, " SerialNumber: %s\n", string);
|
|
unicode_to_ascii(string, sizeof(string),
|
|
edge_serial->manuf_descriptor.AssemblyNumber,
|
|
edge_serial->manuf_descriptor.AssemblyNumLength/2);
|
|
dev_dbg(dev, " AssemblyNumber: %s\n", string);
|
|
unicode_to_ascii(string, sizeof(string),
|
|
edge_serial->manuf_descriptor.OemAssyNumber,
|
|
edge_serial->manuf_descriptor.OemAssyNumLength/2);
|
|
dev_dbg(dev, " OemAssyNumber: %s\n", string);
|
|
dev_dbg(dev, " UartType: %d\n",
|
|
edge_serial->manuf_descriptor.UartType);
|
|
dev_dbg(dev, " IonPid: %d\n",
|
|
edge_serial->manuf_descriptor.IonPid);
|
|
dev_dbg(dev, " IonConfig: %d\n",
|
|
edge_serial->manuf_descriptor.IonConfig);
|
|
}
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* get_boot_desc
|
|
* reads in the bootloader descriptor and stores it into the serial
|
|
* structure.
|
|
****************************************************************************/
|
|
static void get_boot_desc(struct edgeport_serial *edge_serial)
|
|
{
|
|
struct device *dev = &edge_serial->serial->dev->dev;
|
|
int response;
|
|
|
|
dev_dbg(dev, "getting boot descriptor\n");
|
|
|
|
response = rom_read(edge_serial->serial,
|
|
(EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
|
|
(__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
|
|
EDGE_BOOT_DESC_LEN,
|
|
(__u8 *)(&edge_serial->boot_descriptor));
|
|
|
|
if (response < 1)
|
|
dev_err(dev, "error in getting boot descriptor\n");
|
|
else {
|
|
dev_dbg(dev, "**Boot Descriptor:\n");
|
|
dev_dbg(dev, " BootCodeLength: %d\n",
|
|
le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
|
|
dev_dbg(dev, " MajorVersion: %d\n",
|
|
edge_serial->boot_descriptor.MajorVersion);
|
|
dev_dbg(dev, " MinorVersion: %d\n",
|
|
edge_serial->boot_descriptor.MinorVersion);
|
|
dev_dbg(dev, " BuildNumber: %d\n",
|
|
le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
|
|
dev_dbg(dev, " Capabilities: 0x%x\n",
|
|
le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
|
|
dev_dbg(dev, " UConfig0: %d\n",
|
|
edge_serial->boot_descriptor.UConfig0);
|
|
dev_dbg(dev, " UConfig1: %d\n",
|
|
edge_serial->boot_descriptor.UConfig1);
|
|
}
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* load_application_firmware
|
|
* This is called to load the application firmware to the device
|
|
****************************************************************************/
|
|
static void load_application_firmware(struct edgeport_serial *edge_serial)
|
|
{
|
|
struct device *dev = &edge_serial->serial->dev->dev;
|
|
const struct ihex_binrec *rec;
|
|
const struct firmware *fw;
|
|
const char *fw_name;
|
|
const char *fw_info;
|
|
int response;
|
|
__u32 Operaddr;
|
|
__u16 build;
|
|
|
|
switch (edge_serial->product_info.iDownloadFile) {
|
|
case EDGE_DOWNLOAD_FILE_I930:
|
|
fw_info = "downloading firmware version (930)";
|
|
fw_name = "edgeport/down.fw";
|
|
break;
|
|
|
|
case EDGE_DOWNLOAD_FILE_80251:
|
|
fw_info = "downloading firmware version (80251)";
|
|
fw_name = "edgeport/down2.fw";
|
|
break;
|
|
|
|
case EDGE_DOWNLOAD_FILE_NONE:
|
|
dev_dbg(dev, "No download file specified, skipping download\n");
|
|
return;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
response = request_ihex_firmware(&fw, fw_name,
|
|
&edge_serial->serial->dev->dev);
|
|
if (response) {
|
|
dev_err(dev, "Failed to load image \"%s\" err %d\n",
|
|
fw_name, response);
|
|
return;
|
|
}
|
|
|
|
rec = (const struct ihex_binrec *)fw->data;
|
|
build = (rec->data[2] << 8) | rec->data[3];
|
|
|
|
dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
|
|
|
|
edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
|
|
edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
|
|
edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
|
|
|
|
for (rec = ihex_next_binrec(rec); rec;
|
|
rec = ihex_next_binrec(rec)) {
|
|
Operaddr = be32_to_cpu(rec->addr);
|
|
response = sram_write(edge_serial->serial,
|
|
Operaddr >> 16,
|
|
Operaddr & 0xFFFF,
|
|
be16_to_cpu(rec->len),
|
|
&rec->data[0]);
|
|
if (response < 0) {
|
|
dev_err(&edge_serial->serial->dev->dev,
|
|
"sram_write failed (%x, %x, %d)\n",
|
|
Operaddr >> 16, Operaddr & 0xFFFF,
|
|
be16_to_cpu(rec->len));
|
|
break;
|
|
}
|
|
}
|
|
|
|
dev_dbg(dev, "sending exec_dl_code\n");
|
|
response = usb_control_msg (edge_serial->serial->dev,
|
|
usb_sndctrlpipe(edge_serial->serial->dev, 0),
|
|
USB_REQUEST_ION_EXEC_DL_CODE,
|
|
0x40, 0x4000, 0x0001, NULL, 0, 3000);
|
|
|
|
release_firmware(fw);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edge_startup
|
|
****************************************************************************/
|
|
static int edge_startup(struct usb_serial *serial)
|
|
{
|
|
struct edgeport_serial *edge_serial;
|
|
struct usb_device *dev;
|
|
struct device *ddev = &serial->dev->dev;
|
|
int i;
|
|
int response;
|
|
bool interrupt_in_found;
|
|
bool bulk_in_found;
|
|
bool bulk_out_found;
|
|
static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
|
|
EDGE_COMPATIBILITY_MASK1,
|
|
EDGE_COMPATIBILITY_MASK2 };
|
|
|
|
dev = serial->dev;
|
|
|
|
/* create our private serial structure */
|
|
edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
|
|
if (!edge_serial)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_init(&edge_serial->es_lock);
|
|
edge_serial->serial = serial;
|
|
usb_set_serial_data(serial, edge_serial);
|
|
|
|
/* get the name for the device from the device */
|
|
i = usb_string(dev, dev->descriptor.iManufacturer,
|
|
&edge_serial->name[0], MAX_NAME_LEN+1);
|
|
if (i < 0)
|
|
i = 0;
|
|
edge_serial->name[i++] = ' ';
|
|
usb_string(dev, dev->descriptor.iProduct,
|
|
&edge_serial->name[i], MAX_NAME_LEN+2 - i);
|
|
|
|
dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
|
|
|
|
/* Read the epic descriptor */
|
|
if (get_epic_descriptor(edge_serial) <= 0) {
|
|
/* memcpy descriptor to Supports structures */
|
|
memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
|
|
sizeof(struct edge_compatibility_bits));
|
|
|
|
/* get the manufacturing descriptor for this device */
|
|
get_manufacturing_desc(edge_serial);
|
|
|
|
/* get the boot descriptor */
|
|
get_boot_desc(edge_serial);
|
|
|
|
get_product_info(edge_serial);
|
|
}
|
|
|
|
/* set the number of ports from the manufacturing description */
|
|
/* serial->num_ports = serial->product_info.NumPorts; */
|
|
if ((!edge_serial->is_epic) &&
|
|
(edge_serial->product_info.NumPorts != serial->num_ports)) {
|
|
dev_warn(ddev,
|
|
"Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
|
|
edge_serial->product_info.NumPorts,
|
|
serial->num_ports);
|
|
}
|
|
|
|
dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
|
|
|
|
/* If not an EPiC device */
|
|
if (!edge_serial->is_epic) {
|
|
/* now load the application firmware into this device */
|
|
load_application_firmware(edge_serial);
|
|
|
|
dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
|
|
|
|
/* Check current Edgeport EEPROM and update if necessary */
|
|
update_edgeport_E2PROM(edge_serial);
|
|
|
|
dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
|
|
|
|
/* set the configuration to use #1 */
|
|
/* dev_dbg(ddev, "set_configuration 1\n"); */
|
|
/* usb_set_configuration (dev, 1); */
|
|
}
|
|
dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
|
|
edge_serial->product_info.FirmwareMajorVersion,
|
|
edge_serial->product_info.FirmwareMinorVersion,
|
|
le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
|
|
|
|
/* we set up the pointers to the endpoints in the edge_open function,
|
|
* as the structures aren't created yet. */
|
|
|
|
response = 0;
|
|
|
|
if (edge_serial->is_epic) {
|
|
/* EPIC thing, set up our interrupt polling now and our read
|
|
* urb, so that the device knows it really is connected. */
|
|
interrupt_in_found = bulk_in_found = bulk_out_found = false;
|
|
for (i = 0; i < serial->interface->altsetting[0]
|
|
.desc.bNumEndpoints; ++i) {
|
|
struct usb_endpoint_descriptor *endpoint;
|
|
int buffer_size;
|
|
|
|
endpoint = &serial->interface->altsetting[0].
|
|
endpoint[i].desc;
|
|
buffer_size = usb_endpoint_maxp(endpoint);
|
|
if (!interrupt_in_found &&
|
|
(usb_endpoint_is_int_in(endpoint))) {
|
|
/* we found a interrupt in endpoint */
|
|
dev_dbg(ddev, "found interrupt in\n");
|
|
|
|
/* not set up yet, so do it now */
|
|
edge_serial->interrupt_read_urb =
|
|
usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!edge_serial->interrupt_read_urb)
|
|
return -ENOMEM;
|
|
|
|
edge_serial->interrupt_in_buffer =
|
|
kmalloc(buffer_size, GFP_KERNEL);
|
|
if (!edge_serial->interrupt_in_buffer) {
|
|
usb_free_urb(edge_serial->interrupt_read_urb);
|
|
return -ENOMEM;
|
|
}
|
|
edge_serial->interrupt_in_endpoint =
|
|
endpoint->bEndpointAddress;
|
|
|
|
/* set up our interrupt urb */
|
|
usb_fill_int_urb(
|
|
edge_serial->interrupt_read_urb,
|
|
dev,
|
|
usb_rcvintpipe(dev,
|
|
endpoint->bEndpointAddress),
|
|
edge_serial->interrupt_in_buffer,
|
|
buffer_size,
|
|
edge_interrupt_callback,
|
|
edge_serial,
|
|
endpoint->bInterval);
|
|
|
|
interrupt_in_found = true;
|
|
}
|
|
|
|
if (!bulk_in_found &&
|
|
(usb_endpoint_is_bulk_in(endpoint))) {
|
|
/* we found a bulk in endpoint */
|
|
dev_dbg(ddev, "found bulk in\n");
|
|
|
|
/* not set up yet, so do it now */
|
|
edge_serial->read_urb =
|
|
usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!edge_serial->read_urb)
|
|
return -ENOMEM;
|
|
|
|
edge_serial->bulk_in_buffer =
|
|
kmalloc(buffer_size, GFP_KERNEL);
|
|
if (!edge_serial->bulk_in_buffer) {
|
|
usb_free_urb(edge_serial->read_urb);
|
|
return -ENOMEM;
|
|
}
|
|
edge_serial->bulk_in_endpoint =
|
|
endpoint->bEndpointAddress;
|
|
|
|
/* set up our bulk in urb */
|
|
usb_fill_bulk_urb(edge_serial->read_urb, dev,
|
|
usb_rcvbulkpipe(dev,
|
|
endpoint->bEndpointAddress),
|
|
edge_serial->bulk_in_buffer,
|
|
usb_endpoint_maxp(endpoint),
|
|
edge_bulk_in_callback,
|
|
edge_serial);
|
|
bulk_in_found = true;
|
|
}
|
|
|
|
if (!bulk_out_found &&
|
|
(usb_endpoint_is_bulk_out(endpoint))) {
|
|
/* we found a bulk out endpoint */
|
|
dev_dbg(ddev, "found bulk out\n");
|
|
edge_serial->bulk_out_endpoint =
|
|
endpoint->bEndpointAddress;
|
|
bulk_out_found = true;
|
|
}
|
|
}
|
|
|
|
if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
|
|
dev_err(ddev, "Error - the proper endpoints were not found!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* start interrupt read for this edgeport this interrupt will
|
|
* continue as long as the edgeport is connected */
|
|
response = usb_submit_urb(edge_serial->interrupt_read_urb,
|
|
GFP_KERNEL);
|
|
if (response)
|
|
dev_err(ddev, "%s - Error %d submitting control urb\n",
|
|
__func__, response);
|
|
}
|
|
return response;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edge_disconnect
|
|
* This function is called whenever the device is removed from the usb bus.
|
|
****************************************************************************/
|
|
static void edge_disconnect(struct usb_serial *serial)
|
|
{
|
|
struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
|
|
|
|
/* stop reads and writes on all ports */
|
|
/* free up our endpoint stuff */
|
|
if (edge_serial->is_epic) {
|
|
usb_kill_urb(edge_serial->interrupt_read_urb);
|
|
usb_free_urb(edge_serial->interrupt_read_urb);
|
|
kfree(edge_serial->interrupt_in_buffer);
|
|
|
|
usb_kill_urb(edge_serial->read_urb);
|
|
usb_free_urb(edge_serial->read_urb);
|
|
kfree(edge_serial->bulk_in_buffer);
|
|
}
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edge_release
|
|
* This function is called when the device structure is deallocated.
|
|
****************************************************************************/
|
|
static void edge_release(struct usb_serial *serial)
|
|
{
|
|
struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
|
|
|
|
kfree(edge_serial);
|
|
}
|
|
|
|
static int edge_port_probe(struct usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port;
|
|
|
|
edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
|
|
if (!edge_port)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_init(&edge_port->ep_lock);
|
|
edge_port->port = port;
|
|
|
|
usb_set_serial_port_data(port, edge_port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int edge_port_remove(struct usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port;
|
|
|
|
edge_port = usb_get_serial_port_data(port);
|
|
kfree(edge_port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_usb_serial_driver(serial_drivers, id_table_combined);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_FIRMWARE("edgeport/boot.fw");
|
|
MODULE_FIRMWARE("edgeport/boot2.fw");
|
|
MODULE_FIRMWARE("edgeport/down.fw");
|
|
MODULE_FIRMWARE("edgeport/down2.fw");
|