3126 lines
100 KiB
C
3126 lines
100 KiB
C
/*
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* Edgeport USB Serial Converter driver
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*
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* Copyright (C) 2000 Inside Out Networks, All rights reserved.
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* Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Supports the following devices:
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* Edgeport/4
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* Edgeport/4t
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* Edgeport/2
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* Edgeport/4i
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* Edgeport/2i
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* Edgeport/421
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* Edgeport/21
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* Rapidport/4
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* Edgeport/8
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* Edgeport/2D8
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* Edgeport/4D8
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* Edgeport/8i
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*
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* For questions or problems with this driver, contact Inside Out
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* Networks technical support, or Peter Berger <pberger@brimson.com>,
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* or Al Borchers <alborchers@steinerpoint.com>.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/jiffies.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/serial.h>
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#include <linux/ioctl.h>
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#include <linux/wait.h>
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#include <asm/uaccess.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#include "io_edgeport.h"
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#include "io_ionsp.h" /* info for the iosp messages */
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#include "io_16654.h" /* 16654 UART defines */
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/*
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* Version Information
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*/
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#define DRIVER_VERSION "v2.7"
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#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
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#define DRIVER_DESC "Edgeport USB Serial Driver"
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/* First, the latest boot code - for first generation edgeports */
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#define IMAGE_ARRAY_NAME BootCodeImage_GEN1
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#define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
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#include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
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/* for second generation edgeports */
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#define IMAGE_ARRAY_NAME BootCodeImage_GEN2
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#define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
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#include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
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/* Then finally the main run-time operational code - for first generation edgeports */
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#define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
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#define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
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#include "io_fw_down.h" /* Define array OperationalCodeImage[] */
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/* for second generation edgeports */
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#define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
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#define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
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#include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
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#define MAX_NAME_LEN 64
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#define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
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#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
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#define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
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/* receive port state */
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enum RXSTATE {
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EXPECT_HDR1 = 0, /* Expect header byte 1 */
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EXPECT_HDR2 = 1, /* Expect header byte 2 */
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EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
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EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
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};
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/* Transmit Fifo
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* This Transmit queue is an extension of the edgeport Rx buffer.
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* The maximum amount of data buffered in both the edgeport
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* Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
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*/
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struct TxFifo {
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unsigned int head; /* index to head pointer (write) */
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unsigned int tail; /* index to tail pointer (read) */
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unsigned int count; /* Bytes in queue */
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unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
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unsigned char *fifo; /* allocated Buffer */
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};
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/* This structure holds all of the local port information */
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struct edgeport_port {
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__u16 txCredits; /* our current credits for this port */
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__u16 maxTxCredits; /* the max size of the port */
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struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
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struct urb *write_urb; /* write URB for this port */
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bool write_in_progress; /* 'true' while a write URB is outstanding */
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spinlock_t ep_lock;
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__u8 shadowLCR; /* last LCR value received */
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__u8 shadowMCR; /* last MCR value received */
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__u8 shadowMSR; /* last MSR value received */
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__u8 shadowLSR; /* last LSR value received */
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__u8 shadowXonChar; /* last value set as XON char in Edgeport */
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__u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
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__u8 validDataMask;
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__u32 baudRate;
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bool open;
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bool openPending;
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bool commandPending;
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bool closePending;
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bool chaseResponsePending;
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wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
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wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
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wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
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wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
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struct async_icount icount;
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struct usb_serial_port *port; /* loop back to the owner of this object */
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};
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/* This structure holds all of the individual device information */
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struct edgeport_serial {
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char name[MAX_NAME_LEN+2]; /* string name of this device */
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struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
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struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
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struct edgeport_product_info product_info; /* Product Info */
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struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
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int is_epic; /* flag if EPiC device or not */
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__u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
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unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
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struct urb * interrupt_read_urb; /* our interrupt urb */
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__u8 bulk_in_endpoint; /* the bulk in endpoint handle */
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unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
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struct urb * read_urb; /* our bulk read urb */
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bool read_in_progress;
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spinlock_t es_lock;
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__u8 bulk_out_endpoint; /* the bulk out endpoint handle */
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__s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
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enum RXSTATE rxState; /* the current state of the bulk receive processor */
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__u8 rxHeader1; /* receive header byte 1 */
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__u8 rxHeader2; /* receive header byte 2 */
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__u8 rxHeader3; /* receive header byte 3 */
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__u8 rxPort; /* the port that we are currently receiving data for */
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__u8 rxStatusCode; /* the receive status code */
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__u8 rxStatusParam; /* the receive status paramater */
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__s16 rxBytesRemaining; /* the number of port bytes left to read */
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struct usb_serial *serial; /* loop back to the owner of this object */
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};
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/* baud rate information */
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struct divisor_table_entry {
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__u32 BaudRate;
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__u16 Divisor;
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};
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//
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// Define table of divisors for Rev A EdgePort/4 hardware
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// These assume a 3.6864MHz crystal, the standard /16, and
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// MCR.7 = 0.
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//
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static const struct divisor_table_entry divisor_table[] = {
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{ 50, 4608},
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{ 75, 3072},
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{ 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
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{ 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
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{ 150, 1536},
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{ 300, 768},
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{ 600, 384},
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{ 1200, 192},
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{ 1800, 128},
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{ 2400, 96},
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{ 4800, 48},
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{ 7200, 32},
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{ 9600, 24},
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{ 14400, 16},
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{ 19200, 12},
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{ 38400, 6},
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{ 57600, 4},
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{ 115200, 2},
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{ 230400, 1},
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};
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/* local variables */
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static int debug;
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static int low_latency = 1; /* tty low latency flag, on by default */
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static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */
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/* local function prototypes */
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/* function prototypes for all URB callbacks */
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static void edge_interrupt_callback (struct urb *urb);
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static void edge_bulk_in_callback (struct urb *urb);
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static void edge_bulk_out_data_callback (struct urb *urb);
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static void edge_bulk_out_cmd_callback (struct urb *urb);
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/* function prototypes for the usbserial callbacks */
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static int edge_open (struct usb_serial_port *port, struct file *filp);
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static void edge_close (struct usb_serial_port *port, struct file *filp);
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static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count);
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static int edge_write_room (struct usb_serial_port *port);
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static int edge_chars_in_buffer (struct usb_serial_port *port);
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static void edge_throttle (struct usb_serial_port *port);
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static void edge_unthrottle (struct usb_serial_port *port);
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static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios);
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static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
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static void edge_break (struct usb_serial_port *port, int break_state);
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static int edge_tiocmget (struct usb_serial_port *port, struct file *file);
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static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
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static int edge_startup (struct usb_serial *serial);
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static void edge_shutdown (struct usb_serial *serial);
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#include "io_tables.h" /* all of the devices that this driver supports */
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/* function prototypes for all of our local functions */
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static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
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static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
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static void edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
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static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr);
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static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
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static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
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static int calc_baud_rate_divisor (int baud_rate, int *divisor);
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static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
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static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios);
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static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
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static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
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static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
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static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
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static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
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static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
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static void get_manufacturing_desc (struct edgeport_serial *edge_serial);
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static void get_boot_desc (struct edgeport_serial *edge_serial);
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static void load_application_firmware (struct edgeport_serial *edge_serial);
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static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size);
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// ************************************************************************
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// ************************************************************************
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// ************************************************************************
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// ************************************************************************
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/************************************************************************
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* *
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* update_edgeport_E2PROM() Compare current versions of *
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* Boot ROM and Manufacture *
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* Descriptors with versions *
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* embedded in this driver *
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* *
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************************************************************************/
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static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
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{
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__u32 BootCurVer;
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__u32 BootNewVer;
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__u8 BootMajorVersion;
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__u8 BootMinorVersion;
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__le16 BootBuildNumber;
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__u8 *BootImage;
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__u32 BootSize;
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struct edge_firmware_image_record *record;
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unsigned char *firmware;
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int response;
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switch (edge_serial->product_info.iDownloadFile) {
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case EDGE_DOWNLOAD_FILE_I930:
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BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion;
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BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion;
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BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
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BootImage = &BootCodeImage_GEN1[0];
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BootSize = sizeof( BootCodeImage_GEN1 );
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break;
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case EDGE_DOWNLOAD_FILE_80251:
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BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion;
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BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion;
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BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
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BootImage = &BootCodeImage_GEN2[0];
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BootSize = sizeof( BootCodeImage_GEN2 );
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break;
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default:
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return;
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}
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// Check Boot Image Version
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BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
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(edge_serial->boot_descriptor.MinorVersion << 16) +
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le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
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BootNewVer = (BootMajorVersion << 24) +
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(BootMinorVersion << 16) +
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le16_to_cpu(BootBuildNumber);
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dbg("Current Boot Image version %d.%d.%d",
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edge_serial->boot_descriptor.MajorVersion,
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edge_serial->boot_descriptor.MinorVersion,
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le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
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if (BootNewVer > BootCurVer) {
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dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
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edge_serial->boot_descriptor.MajorVersion,
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edge_serial->boot_descriptor.MinorVersion,
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le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
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BootMajorVersion,
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BootMinorVersion,
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le16_to_cpu(BootBuildNumber));
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dbg("Downloading new Boot Image");
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firmware = BootImage;
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for (;;) {
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record = (struct edge_firmware_image_record *)firmware;
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response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
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if (response < 0) {
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dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
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break;
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}
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firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
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if (firmware >= &BootImage[BootSize]) {
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break;
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}
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}
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} else {
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dbg("Boot Image -- already up to date");
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}
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}
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/************************************************************************
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* *
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* Get string descriptor from device *
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* *
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************************************************************************/
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static int get_string (struct usb_device *dev, int Id, char *string, int buflen)
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{
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struct usb_string_descriptor StringDesc;
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struct usb_string_descriptor *pStringDesc;
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dbg("%s - USB String ID = %d", __FUNCTION__, Id );
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if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
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return 0;
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}
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pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
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if (!pStringDesc) {
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return 0;
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}
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if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
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kfree(pStringDesc);
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return 0;
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}
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unicode_to_ascii(string, buflen, pStringDesc->wData, pStringDesc->bLength/2);
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kfree(pStringDesc);
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dbg("%s - USB String %s", __FUNCTION__, string);
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return strlen(string);
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}
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#if 0
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/************************************************************************
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*
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* Get string descriptor from device
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*
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************************************************************************/
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static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
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{
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struct usb_string_descriptor StringDesc;
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struct usb_string_descriptor *pStringDesc;
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dbg("%s - USB String ID = %d", __FUNCTION__, Id );
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if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
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return 0;
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}
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pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
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if (!pStringDesc) {
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return -1;
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}
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if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
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kfree(pStringDesc);
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return -1;
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}
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*pRetDesc = pStringDesc;
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return 0;
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}
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#endif
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static void dump_product_info(struct edgeport_product_info *product_info)
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{
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// Dump Product Info structure
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dbg("**Product Information:");
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dbg(" ProductId %x", product_info->ProductId );
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dbg(" NumPorts %d", product_info->NumPorts );
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dbg(" ProdInfoVer %d", product_info->ProdInfoVer );
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dbg(" IsServer %d", product_info->IsServer);
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dbg(" IsRS232 %d", product_info->IsRS232 );
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dbg(" IsRS422 %d", product_info->IsRS422 );
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dbg(" IsRS485 %d", product_info->IsRS485 );
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dbg(" RomSize %d", product_info->RomSize );
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dbg(" RamSize %d", product_info->RamSize );
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dbg(" CpuRev %x", product_info->CpuRev );
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dbg(" BoardRev %x", product_info->BoardRev);
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dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
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product_info->BootMinorVersion,
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le16_to_cpu(product_info->BootBuildNumber));
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dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
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product_info->FirmwareMinorVersion,
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le16_to_cpu(product_info->FirmwareBuildNumber));
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dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0],
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product_info->ManufactureDescDate[1],
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product_info->ManufactureDescDate[2]+1900);
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dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
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dbg(" EpicVer %d", product_info->EpicVer);
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|
}
|
|
|
|
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->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
|
|
product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
|
|
product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
|
|
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
|
|
} else {
|
|
product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion;
|
|
product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion;
|
|
product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
|
|
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(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;
|
|
|
|
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);
|
|
|
|
dbg("%s result = %d", __FUNCTION__, result);
|
|
|
|
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(product_info);
|
|
|
|
bits = &ep->epic_descriptor.Supports;
|
|
dbg("**EPIC descriptor:");
|
|
dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE");
|
|
dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE" );
|
|
dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE" );
|
|
dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE" );
|
|
dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE" );
|
|
dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE" );
|
|
dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE" );
|
|
dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE" );
|
|
dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE" );
|
|
dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE" );
|
|
dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE" );
|
|
dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE" );
|
|
dbg(" TrueEdgeport : %s", 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 = (struct edgeport_serial *)urb->context;
|
|
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;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
switch (status) {
|
|
case 0:
|
|
/* success */
|
|
break;
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
/* this urb is terminated, clean up */
|
|
dbg("%s - urb shutting down with status: %d",
|
|
__FUNCTION__, status);
|
|
return;
|
|
default:
|
|
dbg("%s - nonzero urb status received: %d",
|
|
__FUNCTION__, status);
|
|
goto exit;
|
|
}
|
|
|
|
// process this interrupt-read even if there are no ports open
|
|
if (length) {
|
|
usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, 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;
|
|
dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
|
|
|
|
if (edge_serial->rxBytesAvail > 0 &&
|
|
!edge_serial->read_in_progress) {
|
|
dbg("%s - posting a read", __FUNCTION__);
|
|
edge_serial->read_in_progress = true;
|
|
|
|
/* we have pending bytes on the bulk in pipe, send a request */
|
|
edge_serial->read_urb->dev = edge_serial->serial->dev;
|
|
result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
|
|
if (result) {
|
|
dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, 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);
|
|
dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
|
|
|
|
/* tell the tty driver that something has changed */
|
|
if (edge_port->port->tty)
|
|
tty_wakeup(edge_port->port->tty);
|
|
|
|
// 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", __FUNCTION__, 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 = (struct edgeport_serial *)urb->context;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
int retval;
|
|
__u16 raw_data_length;
|
|
int status = urb->status;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
if (status) {
|
|
dbg("%s - nonzero read bulk status received: %d",
|
|
__FUNCTION__, status);
|
|
edge_serial->read_in_progress = false;
|
|
return;
|
|
}
|
|
|
|
if (urb->actual_length == 0) {
|
|
dbg("%s - read bulk callback with no data", __FUNCTION__);
|
|
edge_serial->read_in_progress = false;
|
|
return;
|
|
}
|
|
|
|
raw_data_length = urb->actual_length;
|
|
|
|
usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, 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;
|
|
|
|
dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, 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) {
|
|
dbg("%s - posting a read", __FUNCTION__);
|
|
edge_serial->read_urb->dev = edge_serial->serial->dev;
|
|
retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
|
|
if (retval) {
|
|
dev_err(&urb->dev->dev,
|
|
"%s - usb_submit_urb(read bulk) failed, "
|
|
"retval = %d\n", __FUNCTION__, 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 = (struct edgeport_port *)urb->context;
|
|
struct tty_struct *tty;
|
|
int status = urb->status;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
if (status) {
|
|
dbg("%s - nonzero write bulk status received: %d",
|
|
__FUNCTION__, status);
|
|
}
|
|
|
|
tty = edge_port->port->tty;
|
|
|
|
if (tty && edge_port->open) {
|
|
/* let the tty driver wakeup if it has a special write_wakeup function */
|
|
tty_wakeup(tty);
|
|
}
|
|
|
|
// 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 = (struct edgeport_port *)urb->context;
|
|
struct tty_struct *tty;
|
|
int status = urb->status;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
atomic_dec(&CmdUrbs);
|
|
dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs));
|
|
|
|
|
|
/* clean up the transfer buffer */
|
|
kfree(urb->transfer_buffer);
|
|
|
|
/* Free the command urb */
|
|
usb_free_urb (urb);
|
|
|
|
if (status) {
|
|
dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
|
|
return;
|
|
}
|
|
|
|
/* Get pointer to tty */
|
|
tty = edge_port->port->tty;
|
|
|
|
/* tell the tty driver that something has changed */
|
|
if (tty && edge_port->open)
|
|
tty_wakeup(tty);
|
|
|
|
/* 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 usb_serial_port *port, struct file * filp)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct usb_serial *serial;
|
|
struct edgeport_serial *edge_serial;
|
|
int response;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
if (edge_port == NULL)
|
|
return -ENODEV;
|
|
|
|
if (port->tty)
|
|
port->tty->low_latency = low_latency;
|
|
|
|
/* 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(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response);
|
|
}
|
|
}
|
|
|
|
/* initialize our wait queues */
|
|
init_waitqueue_head(&edge_port->wait_open);
|
|
init_waitqueue_head(&edge_port->wait_chase);
|
|
init_waitqueue_head(&edge_port->delta_msr_wait);
|
|
init_waitqueue_head(&edge_port->wait_command);
|
|
|
|
/* initialize our icount structure */
|
|
memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
|
|
|
|
/* initialize our port settings */
|
|
edge_port->txCredits = 0; /* Can't send any data yet */
|
|
edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */
|
|
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(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
|
|
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 */
|
|
dbg("%s - open timedout", __FUNCTION__);
|
|
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) {
|
|
dbg("%s - no memory", __FUNCTION__);
|
|
edge_close (port, filp);
|
|
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) {
|
|
dbg("%s - no memory", __FUNCTION__);
|
|
edge_close (port, filp);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
|
|
|
|
dbg("%s exited", __FUNCTION__);
|
|
|
|
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 timout 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)
|
|
{
|
|
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) {
|
|
dbg("%s - Got Chase Response", __FUNCTION__);
|
|
|
|
// did we get all of our credit back?
|
|
if (edge_port->txCredits == edge_port->maxTxCredits ) {
|
|
dbg("%s - Got all credits", __FUNCTION__);
|
|
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;
|
|
dbg("%s - Chase TIMEOUT", __FUNCTION__);
|
|
return;
|
|
}
|
|
} else {
|
|
// Reset timout value back to 10 seconds
|
|
dbg("%s - Last %d, Current %d", __FUNCTION__, 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 timout of 3 seconds without activity has expired
|
|
*
|
|
************************************************************************/
|
|
static void block_until_tx_empty (struct edgeport_port *edge_port)
|
|
{
|
|
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) {
|
|
dbg("%s - TX Buffer Empty", __FUNCTION__);
|
|
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);
|
|
|
|
dbg("%s wait", __FUNCTION__);
|
|
|
|
if (lastCount == fifo->count) {
|
|
// No activity.. count down.
|
|
loop--;
|
|
if (loop == 0) {
|
|
dbg("%s - TIMEOUT", __FUNCTION__);
|
|
return;
|
|
}
|
|
} else {
|
|
// Reset timout 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 file * filp)
|
|
{
|
|
struct edgeport_serial *edge_serial;
|
|
struct edgeport_port *edge_port;
|
|
int status;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
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;
|
|
|
|
dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
|
|
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 */
|
|
dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
|
|
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;
|
|
|
|
dbg("%s exited", __FUNCTION__);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* 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 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;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
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));
|
|
|
|
dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__,
|
|
port->number, 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) {
|
|
dbg("%s - copySize = Zero", __FUNCTION__);
|
|
goto finish_write;
|
|
}
|
|
|
|
// queue the data
|
|
// since we can never overflow the buffer we do not have to check for 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);
|
|
dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
|
|
|
|
/* now copy our data */
|
|
memcpy(&fifo->fifo[fifo->head], data, firsthalf);
|
|
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 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) {
|
|
dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
|
|
memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
|
|
usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 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 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);
|
|
|
|
dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, 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 urb *urb;
|
|
unsigned char *buffer;
|
|
int status;
|
|
int count;
|
|
int bytesleft;
|
|
int firsthalf;
|
|
int secondhalf;
|
|
unsigned long flags;
|
|
|
|
dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
|
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags);
|
|
|
|
if (edge_port->write_in_progress ||
|
|
!edge_port->open ||
|
|
(fifo->count == 0)) {
|
|
dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, 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)) {
|
|
dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, 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 == NULL) {
|
|
dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
|
|
edge_port->write_in_progress = false;
|
|
goto exit_send;
|
|
}
|
|
buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
|
|
buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, 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(debug, &edge_port->port->dev, __FUNCTION__, 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->icount.tx += count;
|
|
|
|
urb->dev = edge_serial->serial->dev;
|
|
status = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (status) {
|
|
/* something went wrong */
|
|
dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status);
|
|
edge_port->write_in_progress = false;
|
|
|
|
/* revert the credits as something bad happened. */
|
|
edge_port->txCredits += count;
|
|
edge_port->icount.tx -= count;
|
|
}
|
|
dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, 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 usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
int room;
|
|
unsigned long flags;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
if (edge_port == NULL)
|
|
return -ENODEV;
|
|
if (edge_port->closePending)
|
|
return -ENODEV;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
if (!edge_port->open) {
|
|
dbg("%s - port not opened", __FUNCTION__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
// 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);
|
|
|
|
dbg("%s - returns %d", __FUNCTION__, 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 usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
int num_chars;
|
|
unsigned long flags;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
if (edge_port == NULL)
|
|
return -ENODEV;
|
|
if (edge_port->closePending)
|
|
return -ENODEV;
|
|
|
|
if (!edge_port->open) {
|
|
dbg("%s - port not opened", __FUNCTION__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
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) {
|
|
dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, 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 usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct tty_struct *tty;
|
|
int status;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
if (edge_port == NULL)
|
|
return;
|
|
|
|
if (!edge_port->open) {
|
|
dbg("%s - port not opened", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
tty = port->tty;
|
|
if (!tty) {
|
|
dbg ("%s - no tty available", __FUNCTION__);
|
|
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 (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;
|
|
}
|
|
}
|
|
|
|
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 usb_serial_port *port)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct tty_struct *tty;
|
|
int status;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
if (edge_port == NULL)
|
|
return;
|
|
|
|
if (!edge_port->open) {
|
|
dbg("%s - port not opened", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
tty = port->tty;
|
|
if (!tty) {
|
|
dbg ("%s - no tty available", __FUNCTION__);
|
|
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 (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;
|
|
status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
|
|
if (status != 0) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* SerialSetTermios
|
|
* this function is called by the tty driver when it wants to change the termios structure
|
|
*****************************************************************************/
|
|
static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct tty_struct *tty = port->tty;
|
|
unsigned int cflag;
|
|
|
|
if (!port->tty || !port->tty->termios) {
|
|
dbg ("%s - no tty or termios", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
cflag = tty->termios->c_cflag;
|
|
dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
|
|
tty->termios->c_cflag, tty->termios->c_iflag);
|
|
if (old_termios) {
|
|
dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
|
|
old_termios->c_cflag, old_termios->c_iflag);
|
|
}
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
if (edge_port == NULL)
|
|
return;
|
|
|
|
if (!edge_port->open) {
|
|
dbg("%s - port not opened", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
/* change the port settings to the new ones specified */
|
|
change_port_settings (edge_port, old_termios);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* 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) {
|
|
dbg("%s -- Empty", __FUNCTION__);
|
|
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 get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value)
|
|
{
|
|
unsigned int result = 0;
|
|
struct tty_struct *tty = edge_port->port->tty;
|
|
|
|
if (!tty)
|
|
return -ENOIOCTLCMD;
|
|
|
|
result = tty->read_cnt;
|
|
|
|
dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result);
|
|
if (copy_to_user(value, &result, sizeof(int)))
|
|
return -EFAULT;
|
|
//return 0;
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
unsigned int mcr;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
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 usb_serial_port *port, struct file *file)
|
|
{
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
unsigned int result = 0;
|
|
unsigned int msr;
|
|
unsigned int mcr;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, port->number);
|
|
|
|
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 */
|
|
|
|
|
|
dbg("%s -- %x", __FUNCTION__, result);
|
|
|
|
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->serial->minor;
|
|
tmp.port = edge_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;
|
|
// tmp.custom_divisor = state->custom_divisor;
|
|
// tmp.hub6 = state->hub6;
|
|
// tmp.io_type = state->io_type;
|
|
|
|
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 usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
DEFINE_WAIT(wait);
|
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
|
|
struct async_icount cnow;
|
|
struct async_icount cprev;
|
|
struct serial_icounter_struct icount;
|
|
|
|
dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
|
|
|
|
switch (cmd) {
|
|
// return number of bytes available
|
|
case TIOCINQ:
|
|
dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
|
|
return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
|
|
break;
|
|
|
|
case TIOCSERGETLSR:
|
|
dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
|
|
return get_lsr_info(edge_port, (unsigned int __user *) arg);
|
|
return 0;
|
|
|
|
case TIOCGSERIAL:
|
|
dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
|
|
return get_serial_info(edge_port, (struct serial_struct __user *) arg);
|
|
|
|
case TIOCSSERIAL:
|
|
dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
|
|
break;
|
|
|
|
case TIOCMIWAIT:
|
|
dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
|
|
cprev = edge_port->icount;
|
|
while (1) {
|
|
prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE);
|
|
schedule();
|
|
finish_wait(&edge_port->delta_msr_wait, &wait);
|
|
/* see if a signal did it */
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
cnow = edge_port->icount;
|
|
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
|
|
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
|
|
return -EIO; /* no change => error */
|
|
if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
|
|
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
|
|
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
|
|
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
|
|
return 0;
|
|
}
|
|
cprev = cnow;
|
|
}
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case TIOCGICOUNT:
|
|
cnow = edge_port->icount;
|
|
memset(&icount, 0, sizeof(icount));
|
|
icount.cts = cnow.cts;
|
|
icount.dsr = cnow.dsr;
|
|
icount.rng = cnow.rng;
|
|
icount.dcd = cnow.dcd;
|
|
icount.rx = cnow.rx;
|
|
icount.tx = cnow.tx;
|
|
icount.frame = cnow.frame;
|
|
icount.overrun = cnow.overrun;
|
|
icount.parity = cnow.parity;
|
|
icount.brk = cnow.brk;
|
|
icount.buf_overrun = cnow.buf_overrun;
|
|
|
|
dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx );
|
|
if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* SerialBreak
|
|
* this function sends a break to the port
|
|
*****************************************************************************/
|
|
static void edge_break (struct usb_serial_port *port, int break_state)
|
|
{
|
|
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;
|
|
|
|
dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
|
|
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) {
|
|
dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
|
|
status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
|
|
} else {
|
|
dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
|
|
status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
|
|
}
|
|
if (status) {
|
|
dbg("%s - error sending break set/clear command.", __FUNCTION__);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* 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 usb_serial_port *port;
|
|
struct edgeport_port *edge_port;
|
|
struct tty_struct *tty;
|
|
__u16 lastBufferLength;
|
|
__u16 rxLen;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
lastBufferLength = bufferLength + 1;
|
|
|
|
while (bufferLength > 0) {
|
|
/* failsafe incase we get a message that we don't understand */
|
|
if (lastBufferLength == bufferLength) {
|
|
dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
|
|
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;
|
|
|
|
dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, 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 goto EXPECT_HDR1 (if we
|
|
// can process the status with only 2 bytes), or goto
|
|
// 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);
|
|
|
|
dbg("%s - Data for Port %u Len %u", __FUNCTION__, 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;
|
|
edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer
|
|
} else {
|
|
// BufLen >= RxBytesRemaining
|
|
rxLen = edge_serial->rxBytesRemaining;
|
|
edge_serial->rxState = EXPECT_HDR1; // Start another header next time
|
|
}
|
|
|
|
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) {
|
|
tty = edge_port->port->tty;
|
|
if (tty) {
|
|
dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
|
|
edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
|
|
}
|
|
edge_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;
|
|
__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", __FUNCTION__, edge_serial->rxPort);
|
|
return;
|
|
}
|
|
|
|
dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
|
|
|
|
if (code == IOSP_EXT_STATUS) {
|
|
switch (byte2) {
|
|
case IOSP_EXT_STATUS_CHASE_RSP:
|
|
// we want to do EXT status regardless of port open/closed
|
|
dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, 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:
|
|
dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, 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;
|
|
dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, 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 */
|
|
if (edge_port->port->tty)
|
|
change_port_settings (edge_port, edge_port->port->tty->termios);
|
|
|
|
/* 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:
|
|
dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
|
|
handle_new_lsr(edge_port, false, byte2, 0);
|
|
break;
|
|
|
|
case IOSP_STATUS_LSR_DATA:
|
|
dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, 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:
|
|
// dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
|
|
// break;
|
|
//
|
|
case IOSP_STATUS_MSR:
|
|
dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, 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:
|
|
dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* edge_tty_recv
|
|
* this function passes data on to the tty flip buffer
|
|
*****************************************************************************/
|
|
static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
|
|
{
|
|
int cnt;
|
|
|
|
do {
|
|
cnt = tty_buffer_request_room(tty, length);
|
|
if (cnt < length) {
|
|
dev_err(dev, "%s - dropping data, %d bytes lost\n",
|
|
__FUNCTION__, length - cnt);
|
|
if(cnt == 0)
|
|
break;
|
|
}
|
|
tty_insert_flip_string(tty, data, cnt);
|
|
data += cnt;
|
|
length -= cnt;
|
|
} while (length > 0);
|
|
|
|
tty_flip_buffer_push(tty);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* 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;
|
|
|
|
dbg("%s %02x", __FUNCTION__, newMsr);
|
|
|
|
if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
|
|
icount = &edge_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->delta_msr_wait);
|
|
}
|
|
|
|
/* Save the new modem status */
|
|
edge_port->shadowMSR = newMsr & 0xf0;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* 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;
|
|
|
|
dbg("%s - %02x", __FUNCTION__, newLsr);
|
|
|
|
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_port->port->tty)
|
|
edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
|
|
|
|
/* update input line counters */
|
|
icount = &edge_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++;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* 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, __u8 *data)
|
|
{
|
|
int result;
|
|
__u16 current_length;
|
|
unsigned char *transfer_buffer;
|
|
|
|
dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
|
|
|
|
transfer_buffer = kmalloc (64, GFP_KERNEL);
|
|
if (!transfer_buffer) {
|
|
dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
|
|
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;
|
|
}
|
|
// dbg("%s - writing %x, %x, %d", __FUNCTION__, 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, __u8 *data)
|
|
{
|
|
int result;
|
|
__u16 current_length;
|
|
unsigned char *transfer_buffer;
|
|
|
|
// dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
|
|
|
|
transfer_buffer = kmalloc (64, GFP_KERNEL);
|
|
if (!transfer_buffer) {
|
|
dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
|
|
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;
|
|
}
|
|
// dbg("%s - writing %x, %x, %d", __FUNCTION__, 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_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;
|
|
|
|
dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
|
|
|
|
transfer_buffer = kmalloc (64, GFP_KERNEL);
|
|
if (!transfer_buffer) {
|
|
dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
|
|
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;
|
|
}
|
|
// dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_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;
|
|
|
|
dbg("%s - %d, %d", __FUNCTION__, command, param);
|
|
|
|
buffer = kmalloc (10, GFP_ATOMIC);
|
|
if (!buffer) {
|
|
dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
currentCommand = buffer;
|
|
|
|
MAKE_CMD_EXT_CMD (¤tCommand, &length,
|
|
edge_port->port->number - edge_port->port->serial->minor,
|
|
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);
|
|
int status = 0;
|
|
struct urb *urb;
|
|
int timeout;
|
|
|
|
usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer);
|
|
|
|
/* Allocate our next urb */
|
|
urb = usb_alloc_urb (0, GFP_ATOMIC);
|
|
if (!urb)
|
|
return -ENOMEM;
|
|
|
|
atomic_inc(&CmdUrbs);
|
|
dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, 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(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status);
|
|
usb_kill_urb(urb);
|
|
usb_free_urb(urb);
|
|
atomic_dec(&CmdUrbs);
|
|
return status;
|
|
}
|
|
|
|
// wait for command to finish
|
|
timeout = COMMAND_TIMEOUT;
|
|
#if 0
|
|
wait_event (&edge_port->wait_command, !edge_port->commandPending);
|
|
|
|
if (edge_port->commandPending) {
|
|
/* command timed out */
|
|
dbg("%s - command timed out", __FUNCTION__);
|
|
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);
|
|
unsigned char *cmdBuffer;
|
|
unsigned char *currCmd;
|
|
int cmdLen = 0;
|
|
int divisor;
|
|
int status;
|
|
unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
|
|
|
|
if (edge_serial->is_epic &&
|
|
!edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
|
|
dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
|
|
edge_port->port->number, baudRate);
|
|
return 0;
|
|
}
|
|
|
|
dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
|
|
|
|
status = calc_baud_rate_divisor (baudRate, &divisor);
|
|
if (status) {
|
|
dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
|
|
return status;
|
|
}
|
|
|
|
// Alloc memory for the string of commands.
|
|
cmdBuffer = kmalloc (0x100, GFP_ATOMIC);
|
|
if (!cmdBuffer) {
|
|
dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
|
|
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 (int baudrate, int *divisor)
|
|
{
|
|
int i;
|
|
__u16 custom;
|
|
|
|
|
|
dbg("%s - %d", __FUNCTION__, baudrate);
|
|
|
|
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;
|
|
|
|
dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* send_cmd_write_uart_register
|
|
* this function builds up a uart register message and sends to 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);
|
|
unsigned char *cmdBuffer;
|
|
unsigned char *currCmd;
|
|
unsigned long cmdLen = 0;
|
|
int status;
|
|
|
|
dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
|
|
|
|
if (edge_serial->is_epic &&
|
|
!edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
|
|
regNum == MCR) {
|
|
dbg("SendCmdWriteUartReg - Not writing to MCR Register");
|
|
return 0;
|
|
}
|
|
|
|
if (edge_serial->is_epic &&
|
|
!edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
|
|
regNum == LCR) {
|
|
dbg ("SendCmdWriteUartReg - Not writing to LCR Register");
|
|
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->number - edge_port->port->serial->minor,
|
|
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.
|
|
*****************************************************************************/
|
|
#ifndef CMSPAR
|
|
#define CMSPAR 0
|
|
#endif
|
|
static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios)
|
|
{
|
|
struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
|
|
struct tty_struct *tty;
|
|
int baud;
|
|
unsigned cflag;
|
|
__u8 mask = 0xff;
|
|
__u8 lData;
|
|
__u8 lParity;
|
|
__u8 lStop;
|
|
__u8 rxFlow;
|
|
__u8 txFlow;
|
|
int status;
|
|
|
|
dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
|
|
|
|
if (!edge_port->open &&
|
|
!edge_port->openPending) {
|
|
dbg("%s - port not opened", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
tty = edge_port->port->tty;
|
|
if ((!tty) ||
|
|
(!tty->termios)) {
|
|
dbg("%s - no tty structures", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
cflag = tty->termios->c_cflag;
|
|
|
|
switch (cflag & CSIZE) {
|
|
case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break;
|
|
case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break;
|
|
case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break;
|
|
default:
|
|
case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break;
|
|
}
|
|
|
|
lParity = LCR_PAR_NONE;
|
|
if (cflag & PARENB) {
|
|
if (cflag & CMSPAR) {
|
|
if (cflag & PARODD) {
|
|
lParity = LCR_PAR_MARK;
|
|
dbg("%s - parity = mark", __FUNCTION__);
|
|
} else {
|
|
lParity = LCR_PAR_SPACE;
|
|
dbg("%s - parity = space", __FUNCTION__);
|
|
}
|
|
} else if (cflag & PARODD) {
|
|
lParity = LCR_PAR_ODD;
|
|
dbg("%s - parity = odd", __FUNCTION__);
|
|
} else {
|
|
lParity = LCR_PAR_EVEN;
|
|
dbg("%s - parity = even", __FUNCTION__);
|
|
}
|
|
} else {
|
|
dbg("%s - parity = none", __FUNCTION__);
|
|
}
|
|
|
|
if (cflag & CSTOPB) {
|
|
lStop = LCR_STOP_2;
|
|
dbg("%s - stop bits = 2", __FUNCTION__);
|
|
} else {
|
|
lStop = LCR_STOP_1;
|
|
dbg("%s - stop bits = 1", __FUNCTION__);
|
|
}
|
|
|
|
/* figure out the flow control settings */
|
|
rxFlow = txFlow = 0x00;
|
|
if (cflag & CRTSCTS) {
|
|
rxFlow |= IOSP_RX_FLOW_RTS;
|
|
txFlow |= IOSP_TX_FLOW_CTS;
|
|
dbg("%s - RTS/CTS is enabled", __FUNCTION__);
|
|
} else {
|
|
dbg("%s - RTS/CTS is disabled", __FUNCTION__);
|
|
}
|
|
|
|
/* 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;
|
|
dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
|
|
} else {
|
|
dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
|
|
}
|
|
|
|
/* if we are implementing OUTBOUND XON/XOFF */
|
|
if (I_IXON(tty)) {
|
|
txFlow |= IOSP_TX_FLOW_XON_XOFF;
|
|
dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
|
|
} else {
|
|
dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
dbg("%s - baud rate = %d", __FUNCTION__, baud);
|
|
status = send_cmd_write_baud_rate (edge_port, baud);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* 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)
|
|
{
|
|
int response;
|
|
|
|
dbg("getting manufacturer descriptor");
|
|
|
|
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(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
|
|
} else {
|
|
char string[30];
|
|
dbg("**Manufacturer Descriptor");
|
|
dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize);
|
|
dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize);
|
|
dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev);
|
|
dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev);
|
|
dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts);
|
|
dbg(" DescDate: %d/%d/%d", 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);
|
|
dbg(" SerialNumber: %s", string);
|
|
unicode_to_ascii(string, sizeof(string),
|
|
edge_serial->manuf_descriptor.AssemblyNumber,
|
|
edge_serial->manuf_descriptor.AssemblyNumLength/2);
|
|
dbg(" AssemblyNumber: %s", string);
|
|
unicode_to_ascii(string, sizeof(string),
|
|
edge_serial->manuf_descriptor.OemAssyNumber,
|
|
edge_serial->manuf_descriptor.OemAssyNumLength/2);
|
|
dbg(" OemAssyNumber: %s", string);
|
|
dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType);
|
|
dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid);
|
|
dbg(" IonConfig: %d", 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)
|
|
{
|
|
int response;
|
|
|
|
dbg("getting boot descriptor");
|
|
|
|
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(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
|
|
} else {
|
|
dbg("**Boot Descriptor:");
|
|
dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
|
|
dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
|
|
dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
|
|
dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
|
|
dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
|
|
dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0);
|
|
dbg(" UConfig1: %d", 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 edge_firmware_image_record *record;
|
|
unsigned char *firmware;
|
|
unsigned char *FirmwareImage;
|
|
int ImageSize;
|
|
int response;
|
|
|
|
|
|
switch (edge_serial->product_info.iDownloadFile) {
|
|
case EDGE_DOWNLOAD_FILE_I930:
|
|
dbg("downloading firmware version (930) %d.%d.%d",
|
|
OperationalCodeImageVersion_GEN1.MajorVersion,
|
|
OperationalCodeImageVersion_GEN1.MinorVersion,
|
|
OperationalCodeImageVersion_GEN1.BuildNumber);
|
|
firmware = &OperationalCodeImage_GEN1[0];
|
|
FirmwareImage = &OperationalCodeImage_GEN1[0];
|
|
ImageSize = sizeof(OperationalCodeImage_GEN1);
|
|
break;
|
|
|
|
case EDGE_DOWNLOAD_FILE_80251:
|
|
dbg("downloading firmware version (80251) %d.%d.%d",
|
|
OperationalCodeImageVersion_GEN2.MajorVersion,
|
|
OperationalCodeImageVersion_GEN2.MinorVersion,
|
|
OperationalCodeImageVersion_GEN2.BuildNumber);
|
|
firmware = &OperationalCodeImage_GEN2[0];
|
|
FirmwareImage = &OperationalCodeImage_GEN2[0];
|
|
ImageSize = sizeof(OperationalCodeImage_GEN2);
|
|
break;
|
|
|
|
case EDGE_DOWNLOAD_FILE_NONE:
|
|
dbg ("No download file specified, skipping download\n");
|
|
return;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
|
|
for (;;) {
|
|
record = (struct edge_firmware_image_record *)firmware;
|
|
response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
|
|
if (response < 0) {
|
|
dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
|
|
break;
|
|
}
|
|
firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
|
|
if (firmware >= &FirmwareImage[ImageSize]) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
dbg("sending exec_dl_code");
|
|
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);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edge_startup
|
|
****************************************************************************/
|
|
static int edge_startup (struct usb_serial *serial)
|
|
{
|
|
struct edgeport_serial *edge_serial;
|
|
struct edgeport_port *edge_port;
|
|
struct usb_device *dev;
|
|
int i, j;
|
|
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 == NULL) {
|
|
dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
|
|
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 = get_string(dev, dev->descriptor.iManufacturer,
|
|
&edge_serial->name[0], MAX_NAME_LEN+1);
|
|
edge_serial->name[i++] = ' ';
|
|
get_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(&serial->dev->dev, "Device Reported %d serial ports "
|
|
"vs. core thinking we have %d ports, email "
|
|
"greg@kroah.com this information.",
|
|
edge_serial->product_info.NumPorts,
|
|
serial->num_ports);
|
|
}
|
|
|
|
dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
|
|
|
|
/* If not an EPiC device */
|
|
if (!edge_serial->is_epic) {
|
|
/* now load the application firmware into this device */
|
|
load_application_firmware (edge_serial);
|
|
|
|
dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
|
|
|
|
/* Check current Edgeport EEPROM and update if necessary */
|
|
update_edgeport_E2PROM (edge_serial);
|
|
|
|
dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
|
|
|
|
/* set the configuration to use #1 */
|
|
// dbg("set_configuration 1");
|
|
// usb_set_configuration (dev, 1);
|
|
}
|
|
|
|
/* we set up the pointers to the endpoints in the edge_open function,
|
|
* as the structures aren't created yet. */
|
|
|
|
/* set up our port private structures */
|
|
for (i = 0; i < serial->num_ports; ++i) {
|
|
edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
|
|
if (edge_port == NULL) {
|
|
dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
|
|
for (j = 0; j < i; ++j) {
|
|
kfree (usb_get_serial_port_data(serial->port[j]));
|
|
usb_set_serial_port_data(serial->port[j], NULL);
|
|
}
|
|
usb_set_serial_data(serial, NULL);
|
|
kfree(edge_serial);
|
|
return -ENOMEM;
|
|
}
|
|
memset (edge_port, 0, sizeof(struct edgeport_port));
|
|
spin_lock_init(&edge_port->ep_lock);
|
|
edge_port->port = serial->port[i];
|
|
usb_set_serial_port_data(serial->port[i], edge_port);
|
|
}
|
|
|
|
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 = le16_to_cpu(endpoint->wMaxPacketSize);
|
|
if (!interrupt_in_found &&
|
|
(usb_endpoint_is_int_in(endpoint))) {
|
|
/* we found a interrupt in endpoint */
|
|
dbg("found interrupt in");
|
|
|
|
/* 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) {
|
|
err("out of memory");
|
|
return -ENOMEM;
|
|
}
|
|
edge_serial->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
|
|
if (!edge_serial->interrupt_in_buffer) {
|
|
err("out of memory");
|
|
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 */
|
|
dbg("found bulk in");
|
|
|
|
/* not set up yet, so do it now */
|
|
edge_serial->read_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!edge_serial->read_urb) {
|
|
err("out of memory");
|
|
return -ENOMEM;
|
|
}
|
|
edge_serial->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
|
|
if (!edge_serial->bulk_in_buffer) {
|
|
err ("out of memory");
|
|
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,
|
|
endpoint->wMaxPacketSize,
|
|
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 */
|
|
dbg("found bulk out");
|
|
edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress;
|
|
bulk_out_found = true;
|
|
}
|
|
}
|
|
|
|
if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
|
|
err ("Error - the proper endpoints were not found!");
|
|
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)
|
|
err("%s - Error %d submitting control urb", __FUNCTION__, response);
|
|
}
|
|
return response;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edge_shutdown
|
|
* This function is called whenever the device is removed from the usb bus.
|
|
****************************************************************************/
|
|
static void edge_shutdown (struct usb_serial *serial)
|
|
{
|
|
struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
|
|
int i;
|
|
|
|
dbg("%s", __FUNCTION__);
|
|
|
|
/* stop reads and writes on all ports */
|
|
for (i=0; i < serial->num_ports; ++i) {
|
|
kfree (usb_get_serial_port_data(serial->port[i]));
|
|
usb_set_serial_port_data(serial->port[i], NULL);
|
|
}
|
|
/* 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);
|
|
}
|
|
|
|
kfree(edge_serial);
|
|
usb_set_serial_data(serial, NULL);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edgeport_init
|
|
* This is called by the module subsystem, or on startup to initialize us
|
|
****************************************************************************/
|
|
static int __init edgeport_init(void)
|
|
{
|
|
int retval;
|
|
|
|
retval = usb_serial_register(&edgeport_2port_device);
|
|
if (retval)
|
|
goto failed_2port_device_register;
|
|
retval = usb_serial_register(&edgeport_4port_device);
|
|
if (retval)
|
|
goto failed_4port_device_register;
|
|
retval = usb_serial_register(&edgeport_8port_device);
|
|
if (retval)
|
|
goto failed_8port_device_register;
|
|
retval = usb_serial_register(&epic_device);
|
|
if (retval)
|
|
goto failed_epic_device_register;
|
|
retval = usb_register(&io_driver);
|
|
if (retval)
|
|
goto failed_usb_register;
|
|
atomic_set(&CmdUrbs, 0);
|
|
info(DRIVER_DESC " " DRIVER_VERSION);
|
|
return 0;
|
|
|
|
failed_usb_register:
|
|
usb_serial_deregister(&epic_device);
|
|
failed_epic_device_register:
|
|
usb_serial_deregister(&edgeport_8port_device);
|
|
failed_8port_device_register:
|
|
usb_serial_deregister(&edgeport_4port_device);
|
|
failed_4port_device_register:
|
|
usb_serial_deregister(&edgeport_2port_device);
|
|
failed_2port_device_register:
|
|
return retval;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* edgeport_exit
|
|
* Called when the driver is about to be unloaded.
|
|
****************************************************************************/
|
|
static void __exit edgeport_exit (void)
|
|
{
|
|
usb_deregister (&io_driver);
|
|
usb_serial_deregister (&edgeport_2port_device);
|
|
usb_serial_deregister (&edgeport_4port_device);
|
|
usb_serial_deregister (&edgeport_8port_device);
|
|
usb_serial_deregister (&epic_device);
|
|
}
|
|
|
|
module_init(edgeport_init);
|
|
module_exit(edgeport_exit);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR( DRIVER_AUTHOR );
|
|
MODULE_DESCRIPTION( DRIVER_DESC );
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|
|
|
|
module_param(low_latency, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
|