3298 lines
97 KiB
C
3298 lines
97 KiB
C
/*
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* RocketPort device driver for Linux
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*
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* Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000.
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*
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* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Kernel Synchronization:
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*
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* This driver has 2 kernel control paths - exception handlers (calls into the driver
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* from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts
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* are not used.
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*
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* Critical data:
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* - rp_table[], accessed through passed "info" pointers, is a global (static) array of
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* serial port state information and the xmit_buf circular buffer. Protected by
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* a per port spinlock.
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* - xmit_flags[], an array of ints indexed by line (port) number, indicating that there
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* is data to be transmitted. Protected by atomic bit operations.
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* - rp_num_ports, int indicating number of open ports, protected by atomic operations.
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*
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* rp_write() and rp_write_char() functions use a per port semaphore to protect against
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* simultaneous access to the same port by more than one process.
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*/
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/****** Defines ******/
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#define ROCKET_PARANOIA_CHECK
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#define ROCKET_DISABLE_SIMUSAGE
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#undef ROCKET_SOFT_FLOW
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#undef ROCKET_DEBUG_OPEN
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#undef ROCKET_DEBUG_INTR
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#undef ROCKET_DEBUG_WRITE
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#undef ROCKET_DEBUG_FLOW
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#undef ROCKET_DEBUG_THROTTLE
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#undef ROCKET_DEBUG_WAIT_UNTIL_SENT
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#undef ROCKET_DEBUG_RECEIVE
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#undef ROCKET_DEBUG_HANGUP
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#undef REV_PCI_ORDER
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#undef ROCKET_DEBUG_IO
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#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
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/****** Kernel includes ******/
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/major.h>
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#include <linux/kernel.h>
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#include <linux/signal.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/interrupt.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/serial.h>
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#include <linux/string.h>
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#include <linux/fcntl.h>
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#include <linux/ptrace.h>
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#include <linux/mutex.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/completion.h>
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#include <linux/wait.h>
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#include <linux/pci.h>
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#include <linux/uaccess.h>
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#include <asm/atomic.h>
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#include <asm/unaligned.h>
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#include <linux/bitops.h>
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#include <linux/spinlock.h>
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#include <linux/init.h>
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/****** RocketPort includes ******/
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#include "rocket_int.h"
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#include "rocket.h"
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#define ROCKET_VERSION "2.09"
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#define ROCKET_DATE "12-June-2003"
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/****** RocketPort Local Variables ******/
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static void rp_do_poll(unsigned long dummy);
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static struct tty_driver *rocket_driver;
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static struct rocket_version driver_version = {
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ROCKET_VERSION, ROCKET_DATE
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};
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static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
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static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
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/* eg. Bit 0 indicates port 0 has xmit data, ... */
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static atomic_t rp_num_ports_open; /* Number of serial ports open */
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static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
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static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
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static unsigned long board2;
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static unsigned long board3;
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static unsigned long board4;
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static unsigned long controller;
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static int support_low_speed;
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static unsigned long modem1;
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static unsigned long modem2;
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static unsigned long modem3;
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static unsigned long modem4;
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static unsigned long pc104_1[8];
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static unsigned long pc104_2[8];
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static unsigned long pc104_3[8];
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static unsigned long pc104_4[8];
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static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
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static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
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static unsigned long rcktpt_io_addr[NUM_BOARDS];
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static int rcktpt_type[NUM_BOARDS];
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static int is_PCI[NUM_BOARDS];
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static rocketModel_t rocketModel[NUM_BOARDS];
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static int max_board;
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/*
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* The following arrays define the interrupt bits corresponding to each AIOP.
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* These bits are different between the ISA and regular PCI boards and the
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* Universal PCI boards.
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*/
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static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
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AIOP_INTR_BIT_0,
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AIOP_INTR_BIT_1,
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AIOP_INTR_BIT_2,
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AIOP_INTR_BIT_3
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};
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static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
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UPCI_AIOP_INTR_BIT_0,
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UPCI_AIOP_INTR_BIT_1,
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UPCI_AIOP_INTR_BIT_2,
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UPCI_AIOP_INTR_BIT_3
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};
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static Byte_t RData[RDATASIZE] = {
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0x00, 0x09, 0xf6, 0x82,
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0x02, 0x09, 0x86, 0xfb,
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0x04, 0x09, 0x00, 0x0a,
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0x06, 0x09, 0x01, 0x0a,
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0x08, 0x09, 0x8a, 0x13,
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0x0a, 0x09, 0xc5, 0x11,
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0x0c, 0x09, 0x86, 0x85,
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0x0e, 0x09, 0x20, 0x0a,
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0x10, 0x09, 0x21, 0x0a,
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0x12, 0x09, 0x41, 0xff,
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0x14, 0x09, 0x82, 0x00,
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0x16, 0x09, 0x82, 0x7b,
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0x18, 0x09, 0x8a, 0x7d,
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0x1a, 0x09, 0x88, 0x81,
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0x1c, 0x09, 0x86, 0x7a,
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0x1e, 0x09, 0x84, 0x81,
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0x20, 0x09, 0x82, 0x7c,
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0x22, 0x09, 0x0a, 0x0a
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};
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static Byte_t RRegData[RREGDATASIZE] = {
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0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
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0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
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0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
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0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
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0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
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0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
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0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
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0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
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0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
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0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
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0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
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0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
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0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
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};
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static CONTROLLER_T sController[CTL_SIZE] = {
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{-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
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{0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
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{-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
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{0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
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{-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
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{0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
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{-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
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{0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
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};
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static Byte_t sBitMapClrTbl[8] = {
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0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
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};
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static Byte_t sBitMapSetTbl[8] = {
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0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
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};
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static int sClockPrescale = 0x14;
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/*
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* Line number is the ttySIx number (x), the Minor number. We
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* assign them sequentially, starting at zero. The following
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* array keeps track of the line number assigned to a given board/aiop/channel.
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*/
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static unsigned char lineNumbers[MAX_RP_PORTS];
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static unsigned long nextLineNumber;
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/***** RocketPort Static Prototypes *********/
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static int __init init_ISA(int i);
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static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
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static void rp_flush_buffer(struct tty_struct *tty);
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static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
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static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
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static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
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static void rp_start(struct tty_struct *tty);
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static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
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int ChanNum);
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static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
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static void sFlushRxFIFO(CHANNEL_T * ChP);
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static void sFlushTxFIFO(CHANNEL_T * ChP);
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static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
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static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
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static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
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static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
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static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
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static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
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ByteIO_t * AiopIOList, int AiopIOListSize,
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WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
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int PeriodicOnly, int altChanRingIndicator,
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int UPCIRingInd);
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static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
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ByteIO_t * AiopIOList, int AiopIOListSize,
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int IRQNum, Byte_t Frequency, int PeriodicOnly);
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static int sReadAiopID(ByteIO_t io);
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static int sReadAiopNumChan(WordIO_t io);
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MODULE_AUTHOR("Theodore Ts'o");
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MODULE_DESCRIPTION("Comtrol RocketPort driver");
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module_param(board1, ulong, 0);
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MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
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module_param(board2, ulong, 0);
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MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
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module_param(board3, ulong, 0);
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MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
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module_param(board4, ulong, 0);
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MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
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module_param(controller, ulong, 0);
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MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
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module_param(support_low_speed, bool, 0);
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MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
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module_param(modem1, ulong, 0);
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MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
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module_param(modem2, ulong, 0);
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MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
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module_param(modem3, ulong, 0);
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MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
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module_param(modem4, ulong, 0);
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MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
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module_param_array(pc104_1, ulong, NULL, 0);
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MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
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module_param_array(pc104_2, ulong, NULL, 0);
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MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
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module_param_array(pc104_3, ulong, NULL, 0);
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MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
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module_param_array(pc104_4, ulong, NULL, 0);
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MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
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static int rp_init(void);
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static void rp_cleanup_module(void);
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module_init(rp_init);
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module_exit(rp_cleanup_module);
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MODULE_LICENSE("Dual BSD/GPL");
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/*************************************************************************/
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/* Module code starts here */
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static inline int rocket_paranoia_check(struct r_port *info,
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const char *routine)
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{
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#ifdef ROCKET_PARANOIA_CHECK
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if (!info)
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return 1;
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if (info->magic != RPORT_MAGIC) {
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printk(KERN_WARNING "Warning: bad magic number for rocketport "
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"struct in %s\n", routine);
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return 1;
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}
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#endif
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return 0;
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}
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/* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
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* that receive data is present on a serial port. Pulls data from FIFO, moves it into the
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* tty layer.
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*/
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static void rp_do_receive(struct r_port *info,
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struct tty_struct *tty,
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CHANNEL_t * cp, unsigned int ChanStatus)
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{
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unsigned int CharNStat;
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int ToRecv, wRecv, space;
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unsigned char *cbuf;
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ToRecv = sGetRxCnt(cp);
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#ifdef ROCKET_DEBUG_INTR
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printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
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#endif
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if (ToRecv == 0)
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return;
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/*
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* if status indicates there are errored characters in the
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* FIFO, then enter status mode (a word in FIFO holds
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* character and status).
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*/
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if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
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if (!(ChanStatus & STATMODE)) {
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#ifdef ROCKET_DEBUG_RECEIVE
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printk(KERN_INFO "Entering STATMODE...\n");
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#endif
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ChanStatus |= STATMODE;
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sEnRxStatusMode(cp);
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}
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}
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/*
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* if we previously entered status mode, then read down the
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* FIFO one word at a time, pulling apart the character and
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* the status. Update error counters depending on status
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*/
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if (ChanStatus & STATMODE) {
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#ifdef ROCKET_DEBUG_RECEIVE
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printk(KERN_INFO "Ignore %x, read %x...\n",
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info->ignore_status_mask, info->read_status_mask);
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#endif
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while (ToRecv) {
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char flag;
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CharNStat = sInW(sGetTxRxDataIO(cp));
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#ifdef ROCKET_DEBUG_RECEIVE
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printk(KERN_INFO "%x...\n", CharNStat);
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#endif
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if (CharNStat & STMBREAKH)
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CharNStat &= ~(STMFRAMEH | STMPARITYH);
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if (CharNStat & info->ignore_status_mask) {
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ToRecv--;
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continue;
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}
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CharNStat &= info->read_status_mask;
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if (CharNStat & STMBREAKH)
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flag = TTY_BREAK;
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else if (CharNStat & STMPARITYH)
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flag = TTY_PARITY;
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else if (CharNStat & STMFRAMEH)
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flag = TTY_FRAME;
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else if (CharNStat & STMRCVROVRH)
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flag = TTY_OVERRUN;
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else
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flag = TTY_NORMAL;
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tty_insert_flip_char(tty, CharNStat & 0xff, flag);
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ToRecv--;
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}
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/*
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* after we've emptied the FIFO in status mode, turn
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* status mode back off
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*/
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if (sGetRxCnt(cp) == 0) {
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#ifdef ROCKET_DEBUG_RECEIVE
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printk(KERN_INFO "Status mode off.\n");
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#endif
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sDisRxStatusMode(cp);
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}
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} else {
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/*
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* we aren't in status mode, so read down the FIFO two
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* characters at time by doing repeated word IO
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* transfer.
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*/
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space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
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if (space < ToRecv) {
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#ifdef ROCKET_DEBUG_RECEIVE
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printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
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#endif
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if (space <= 0)
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return;
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ToRecv = space;
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}
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wRecv = ToRecv >> 1;
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if (wRecv)
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sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
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if (ToRecv & 1)
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cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
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}
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/* Push the data up to the tty layer */
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tty_flip_buffer_push(tty);
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}
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/*
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* Serial port transmit data function. Called from the timer polling loop as a
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* result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
|
|
* to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
|
|
* moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
|
|
*/
|
|
static void rp_do_transmit(struct r_port *info)
|
|
{
|
|
int c;
|
|
CHANNEL_t *cp = &info->channel;
|
|
struct tty_struct *tty;
|
|
unsigned long flags;
|
|
|
|
#ifdef ROCKET_DEBUG_INTR
|
|
printk(KERN_DEBUG "%s\n", __func__);
|
|
#endif
|
|
if (!info)
|
|
return;
|
|
if (!info->port.tty) {
|
|
printk(KERN_WARNING "rp: WARNING %s called with "
|
|
"info->port.tty==NULL\n", __func__);
|
|
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
tty = info->port.tty;
|
|
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
|
|
|
|
/* Loop sending data to FIFO until done or FIFO full */
|
|
while (1) {
|
|
if (tty->stopped || tty->hw_stopped)
|
|
break;
|
|
c = min(info->xmit_fifo_room, info->xmit_cnt);
|
|
c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
|
|
if (c <= 0 || info->xmit_fifo_room <= 0)
|
|
break;
|
|
sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
|
|
if (c & 1)
|
|
sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
|
|
info->xmit_tail += c;
|
|
info->xmit_tail &= XMIT_BUF_SIZE - 1;
|
|
info->xmit_cnt -= c;
|
|
info->xmit_fifo_room -= c;
|
|
#ifdef ROCKET_DEBUG_INTR
|
|
printk(KERN_INFO "tx %d chars...\n", c);
|
|
#endif
|
|
}
|
|
|
|
if (info->xmit_cnt == 0)
|
|
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
|
|
if (info->xmit_cnt < WAKEUP_CHARS) {
|
|
tty_wakeup(tty);
|
|
#ifdef ROCKETPORT_HAVE_POLL_WAIT
|
|
wake_up_interruptible(&tty->poll_wait);
|
|
#endif
|
|
}
|
|
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
|
|
#ifdef ROCKET_DEBUG_INTR
|
|
printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
|
|
info->xmit_tail, info->xmit_fifo_room);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Called when a serial port signals it has read data in it's RX FIFO.
|
|
* It checks what interrupts are pending and services them, including
|
|
* receiving serial data.
|
|
*/
|
|
static void rp_handle_port(struct r_port *info)
|
|
{
|
|
CHANNEL_t *cp;
|
|
struct tty_struct *tty;
|
|
unsigned int IntMask, ChanStatus;
|
|
|
|
if (!info)
|
|
return;
|
|
|
|
if ((info->flags & ROCKET_INITIALIZED) == 0) {
|
|
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
|
|
"info->flags & NOT_INIT\n");
|
|
return;
|
|
}
|
|
if (!info->port.tty) {
|
|
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
|
|
"info->port.tty==NULL\n");
|
|
return;
|
|
}
|
|
cp = &info->channel;
|
|
tty = info->port.tty;
|
|
|
|
IntMask = sGetChanIntID(cp) & info->intmask;
|
|
#ifdef ROCKET_DEBUG_INTR
|
|
printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
|
|
#endif
|
|
ChanStatus = sGetChanStatus(cp);
|
|
if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
|
|
rp_do_receive(info, tty, cp, ChanStatus);
|
|
}
|
|
if (IntMask & DELTA_CD) { /* CD change */
|
|
#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
|
|
printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
|
|
(ChanStatus & CD_ACT) ? "on" : "off");
|
|
#endif
|
|
if (!(ChanStatus & CD_ACT) && info->cd_status) {
|
|
#ifdef ROCKET_DEBUG_HANGUP
|
|
printk(KERN_INFO "CD drop, calling hangup.\n");
|
|
#endif
|
|
tty_hangup(tty);
|
|
}
|
|
info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
|
|
wake_up_interruptible(&info->port.open_wait);
|
|
}
|
|
#ifdef ROCKET_DEBUG_INTR
|
|
if (IntMask & DELTA_CTS) { /* CTS change */
|
|
printk(KERN_INFO "CTS change...\n");
|
|
}
|
|
if (IntMask & DELTA_DSR) { /* DSR change */
|
|
printk(KERN_INFO "DSR change...\n");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* The top level polling routine. Repeats every 1/100 HZ (10ms).
|
|
*/
|
|
static void rp_do_poll(unsigned long dummy)
|
|
{
|
|
CONTROLLER_t *ctlp;
|
|
int ctrl, aiop, ch, line;
|
|
unsigned int xmitmask, i;
|
|
unsigned int CtlMask;
|
|
unsigned char AiopMask;
|
|
Word_t bit;
|
|
|
|
/* Walk through all the boards (ctrl's) */
|
|
for (ctrl = 0; ctrl < max_board; ctrl++) {
|
|
if (rcktpt_io_addr[ctrl] <= 0)
|
|
continue;
|
|
|
|
/* Get a ptr to the board's control struct */
|
|
ctlp = sCtlNumToCtlPtr(ctrl);
|
|
|
|
/* Get the interrupt status from the board */
|
|
#ifdef CONFIG_PCI
|
|
if (ctlp->BusType == isPCI)
|
|
CtlMask = sPCIGetControllerIntStatus(ctlp);
|
|
else
|
|
#endif
|
|
CtlMask = sGetControllerIntStatus(ctlp);
|
|
|
|
/* Check if any AIOP read bits are set */
|
|
for (aiop = 0; CtlMask; aiop++) {
|
|
bit = ctlp->AiopIntrBits[aiop];
|
|
if (CtlMask & bit) {
|
|
CtlMask &= ~bit;
|
|
AiopMask = sGetAiopIntStatus(ctlp, aiop);
|
|
|
|
/* Check if any port read bits are set */
|
|
for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
|
|
if (AiopMask & 1) {
|
|
|
|
/* Get the line number (/dev/ttyRx number). */
|
|
/* Read the data from the port. */
|
|
line = GetLineNumber(ctrl, aiop, ch);
|
|
rp_handle_port(rp_table[line]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
xmitmask = xmit_flags[ctrl];
|
|
|
|
/*
|
|
* xmit_flags contains bit-significant flags, indicating there is data
|
|
* to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
|
|
* 1, ... (32 total possible). The variable i has the aiop and ch
|
|
* numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
|
|
*/
|
|
if (xmitmask) {
|
|
for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
|
|
if (xmitmask & (1 << i)) {
|
|
aiop = (i & 0x18) >> 3;
|
|
ch = i & 0x07;
|
|
line = GetLineNumber(ctrl, aiop, ch);
|
|
rp_do_transmit(rp_table[line]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Reset the timer so we get called at the next clock tick (10ms).
|
|
*/
|
|
if (atomic_read(&rp_num_ports_open))
|
|
mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
|
|
}
|
|
|
|
/*
|
|
* Initializes the r_port structure for a port, as well as enabling the port on
|
|
* the board.
|
|
* Inputs: board, aiop, chan numbers
|
|
*/
|
|
static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
|
|
{
|
|
unsigned rocketMode;
|
|
struct r_port *info;
|
|
int line;
|
|
CONTROLLER_T *ctlp;
|
|
|
|
/* Get the next available line number */
|
|
line = SetLineNumber(board, aiop, chan);
|
|
|
|
ctlp = sCtlNumToCtlPtr(board);
|
|
|
|
/* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
|
|
info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
|
|
if (!info) {
|
|
printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
|
|
line);
|
|
return;
|
|
}
|
|
|
|
info->magic = RPORT_MAGIC;
|
|
info->line = line;
|
|
info->ctlp = ctlp;
|
|
info->board = board;
|
|
info->aiop = aiop;
|
|
info->chan = chan;
|
|
info->port.closing_wait = 3000;
|
|
info->port.close_delay = 50;
|
|
init_waitqueue_head(&info->port.open_wait);
|
|
init_completion(&info->close_wait);
|
|
info->flags &= ~ROCKET_MODE_MASK;
|
|
switch (pc104[board][line]) {
|
|
case 422:
|
|
info->flags |= ROCKET_MODE_RS422;
|
|
break;
|
|
case 485:
|
|
info->flags |= ROCKET_MODE_RS485;
|
|
break;
|
|
case 232:
|
|
default:
|
|
info->flags |= ROCKET_MODE_RS232;
|
|
break;
|
|
}
|
|
|
|
info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
|
|
if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
|
|
printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
|
|
board, aiop, chan);
|
|
kfree(info);
|
|
return;
|
|
}
|
|
|
|
rocketMode = info->flags & ROCKET_MODE_MASK;
|
|
|
|
if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
|
|
sEnRTSToggle(&info->channel);
|
|
else
|
|
sDisRTSToggle(&info->channel);
|
|
|
|
if (ctlp->boardType == ROCKET_TYPE_PC104) {
|
|
switch (rocketMode) {
|
|
case ROCKET_MODE_RS485:
|
|
sSetInterfaceMode(&info->channel, InterfaceModeRS485);
|
|
break;
|
|
case ROCKET_MODE_RS422:
|
|
sSetInterfaceMode(&info->channel, InterfaceModeRS422);
|
|
break;
|
|
case ROCKET_MODE_RS232:
|
|
default:
|
|
if (info->flags & ROCKET_RTS_TOGGLE)
|
|
sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
|
|
else
|
|
sSetInterfaceMode(&info->channel, InterfaceModeRS232);
|
|
break;
|
|
}
|
|
}
|
|
spin_lock_init(&info->slock);
|
|
mutex_init(&info->write_mtx);
|
|
rp_table[line] = info;
|
|
tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev :
|
|
NULL);
|
|
}
|
|
|
|
/*
|
|
* Configures a rocketport port according to its termio settings. Called from
|
|
* user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
|
|
*/
|
|
static void configure_r_port(struct r_port *info,
|
|
struct ktermios *old_termios)
|
|
{
|
|
unsigned cflag;
|
|
unsigned long flags;
|
|
unsigned rocketMode;
|
|
int bits, baud, divisor;
|
|
CHANNEL_t *cp;
|
|
struct ktermios *t = info->port.tty->termios;
|
|
|
|
cp = &info->channel;
|
|
cflag = t->c_cflag;
|
|
|
|
/* Byte size and parity */
|
|
if ((cflag & CSIZE) == CS8) {
|
|
sSetData8(cp);
|
|
bits = 10;
|
|
} else {
|
|
sSetData7(cp);
|
|
bits = 9;
|
|
}
|
|
if (cflag & CSTOPB) {
|
|
sSetStop2(cp);
|
|
bits++;
|
|
} else {
|
|
sSetStop1(cp);
|
|
}
|
|
|
|
if (cflag & PARENB) {
|
|
sEnParity(cp);
|
|
bits++;
|
|
if (cflag & PARODD) {
|
|
sSetOddParity(cp);
|
|
} else {
|
|
sSetEvenParity(cp);
|
|
}
|
|
} else {
|
|
sDisParity(cp);
|
|
}
|
|
|
|
/* baud rate */
|
|
baud = tty_get_baud_rate(info->port.tty);
|
|
if (!baud)
|
|
baud = 9600;
|
|
divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
|
|
if ((divisor >= 8192 || divisor < 0) && old_termios) {
|
|
baud = tty_termios_baud_rate(old_termios);
|
|
if (!baud)
|
|
baud = 9600;
|
|
divisor = (rp_baud_base[info->board] / baud) - 1;
|
|
}
|
|
if (divisor >= 8192 || divisor < 0) {
|
|
baud = 9600;
|
|
divisor = (rp_baud_base[info->board] / baud) - 1;
|
|
}
|
|
info->cps = baud / bits;
|
|
sSetBaud(cp, divisor);
|
|
|
|
/* FIXME: Should really back compute a baud rate from the divisor */
|
|
tty_encode_baud_rate(info->port.tty, baud, baud);
|
|
|
|
if (cflag & CRTSCTS) {
|
|
info->intmask |= DELTA_CTS;
|
|
sEnCTSFlowCtl(cp);
|
|
} else {
|
|
info->intmask &= ~DELTA_CTS;
|
|
sDisCTSFlowCtl(cp);
|
|
}
|
|
if (cflag & CLOCAL) {
|
|
info->intmask &= ~DELTA_CD;
|
|
} else {
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
if (sGetChanStatus(cp) & CD_ACT)
|
|
info->cd_status = 1;
|
|
else
|
|
info->cd_status = 0;
|
|
info->intmask |= DELTA_CD;
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
}
|
|
|
|
/*
|
|
* Handle software flow control in the board
|
|
*/
|
|
#ifdef ROCKET_SOFT_FLOW
|
|
if (I_IXON(info->port.tty)) {
|
|
sEnTxSoftFlowCtl(cp);
|
|
if (I_IXANY(info->port.tty)) {
|
|
sEnIXANY(cp);
|
|
} else {
|
|
sDisIXANY(cp);
|
|
}
|
|
sSetTxXONChar(cp, START_CHAR(info->port.tty));
|
|
sSetTxXOFFChar(cp, STOP_CHAR(info->port.tty));
|
|
} else {
|
|
sDisTxSoftFlowCtl(cp);
|
|
sDisIXANY(cp);
|
|
sClrTxXOFF(cp);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Set up ignore/read mask words
|
|
*/
|
|
info->read_status_mask = STMRCVROVRH | 0xFF;
|
|
if (I_INPCK(info->port.tty))
|
|
info->read_status_mask |= STMFRAMEH | STMPARITYH;
|
|
if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
|
|
info->read_status_mask |= STMBREAKH;
|
|
|
|
/*
|
|
* Characters to ignore
|
|
*/
|
|
info->ignore_status_mask = 0;
|
|
if (I_IGNPAR(info->port.tty))
|
|
info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
|
|
if (I_IGNBRK(info->port.tty)) {
|
|
info->ignore_status_mask |= STMBREAKH;
|
|
/*
|
|
* If we're ignoring parity and break indicators,
|
|
* ignore overruns too. (For real raw support).
|
|
*/
|
|
if (I_IGNPAR(info->port.tty))
|
|
info->ignore_status_mask |= STMRCVROVRH;
|
|
}
|
|
|
|
rocketMode = info->flags & ROCKET_MODE_MASK;
|
|
|
|
if ((info->flags & ROCKET_RTS_TOGGLE)
|
|
|| (rocketMode == ROCKET_MODE_RS485))
|
|
sEnRTSToggle(cp);
|
|
else
|
|
sDisRTSToggle(cp);
|
|
|
|
sSetRTS(&info->channel);
|
|
|
|
if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
|
|
switch (rocketMode) {
|
|
case ROCKET_MODE_RS485:
|
|
sSetInterfaceMode(cp, InterfaceModeRS485);
|
|
break;
|
|
case ROCKET_MODE_RS422:
|
|
sSetInterfaceMode(cp, InterfaceModeRS422);
|
|
break;
|
|
case ROCKET_MODE_RS232:
|
|
default:
|
|
if (info->flags & ROCKET_RTS_TOGGLE)
|
|
sSetInterfaceMode(cp, InterfaceModeRS232T);
|
|
else
|
|
sSetInterfaceMode(cp, InterfaceModeRS232);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* info->port.count is considered critical, protected by spinlocks. */
|
|
static int block_til_ready(struct tty_struct *tty, struct file *filp,
|
|
struct r_port *info)
|
|
{
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
int retval;
|
|
int do_clocal = 0, extra_count = 0;
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* If the device is in the middle of being closed, then block
|
|
* until it's done, and then try again.
|
|
*/
|
|
if (tty_hung_up_p(filp))
|
|
return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
|
|
if (info->flags & ROCKET_CLOSING) {
|
|
if (wait_for_completion_interruptible(&info->close_wait))
|
|
return -ERESTARTSYS;
|
|
return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
|
|
}
|
|
|
|
/*
|
|
* If non-blocking mode is set, or the port is not enabled,
|
|
* then make the check up front and then exit.
|
|
*/
|
|
if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
|
|
info->flags |= ROCKET_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
if (tty->termios->c_cflag & CLOCAL)
|
|
do_clocal = 1;
|
|
|
|
/*
|
|
* Block waiting for the carrier detect and the line to become free. While we are in
|
|
* this loop, info->port.count is dropped by one, so that rp_close() knows when to free things.
|
|
* We restore it upon exit, either normal or abnormal.
|
|
*/
|
|
retval = 0;
|
|
add_wait_queue(&info->port.open_wait, &wait);
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->port.count);
|
|
#endif
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
|
|
#ifdef ROCKET_DISABLE_SIMUSAGE
|
|
info->flags |= ROCKET_NORMAL_ACTIVE;
|
|
#else
|
|
if (!tty_hung_up_p(filp)) {
|
|
extra_count = 1;
|
|
info->port.count--;
|
|
}
|
|
#endif
|
|
info->port.blocked_open++;
|
|
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
|
|
while (1) {
|
|
if (tty->termios->c_cflag & CBAUD) {
|
|
sSetDTR(&info->channel);
|
|
sSetRTS(&info->channel);
|
|
}
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
|
|
if (info->flags & ROCKET_HUP_NOTIFY)
|
|
retval = -EAGAIN;
|
|
else
|
|
retval = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
|
|
break;
|
|
if (signal_pending(current)) {
|
|
retval = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
|
|
info->line, info->port.count, info->flags);
|
|
#endif
|
|
schedule(); /* Don't hold spinlock here, will hang PC */
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
remove_wait_queue(&info->port.open_wait, &wait);
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
|
|
if (extra_count)
|
|
info->port.count++;
|
|
info->port.blocked_open--;
|
|
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
|
|
info->line, info->port.count);
|
|
#endif
|
|
if (retval)
|
|
return retval;
|
|
info->flags |= ROCKET_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Exception handler that opens a serial port. Creates xmit_buf storage, fills in
|
|
* port's r_port struct. Initializes the port hardware.
|
|
*/
|
|
static int rp_open(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct r_port *info;
|
|
int line = 0, retval;
|
|
CHANNEL_t *cp;
|
|
unsigned long page;
|
|
|
|
line = tty->index;
|
|
if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
|
|
return -ENXIO;
|
|
|
|
page = __get_free_page(GFP_KERNEL);
|
|
if (!page)
|
|
return -ENOMEM;
|
|
|
|
if (info->flags & ROCKET_CLOSING) {
|
|
retval = wait_for_completion_interruptible(&info->close_wait);
|
|
free_page(page);
|
|
if (retval)
|
|
return retval;
|
|
return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
|
|
}
|
|
|
|
/*
|
|
* We must not sleep from here until the port is marked fully in use.
|
|
*/
|
|
if (info->xmit_buf)
|
|
free_page(page);
|
|
else
|
|
info->xmit_buf = (unsigned char *) page;
|
|
|
|
tty->driver_data = info;
|
|
info->port.tty = tty;
|
|
|
|
if (info->port.count++ == 0) {
|
|
atomic_inc(&rp_num_ports_open);
|
|
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "rocket mod++ = %d...\n",
|
|
atomic_read(&rp_num_ports_open));
|
|
#endif
|
|
}
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
|
|
#endif
|
|
|
|
/*
|
|
* Info->count is now 1; so it's safe to sleep now.
|
|
*/
|
|
if ((info->flags & ROCKET_INITIALIZED) == 0) {
|
|
cp = &info->channel;
|
|
sSetRxTrigger(cp, TRIG_1);
|
|
if (sGetChanStatus(cp) & CD_ACT)
|
|
info->cd_status = 1;
|
|
else
|
|
info->cd_status = 0;
|
|
sDisRxStatusMode(cp);
|
|
sFlushRxFIFO(cp);
|
|
sFlushTxFIFO(cp);
|
|
|
|
sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
|
|
sSetRxTrigger(cp, TRIG_1);
|
|
|
|
sGetChanStatus(cp);
|
|
sDisRxStatusMode(cp);
|
|
sClrTxXOFF(cp);
|
|
|
|
sDisCTSFlowCtl(cp);
|
|
sDisTxSoftFlowCtl(cp);
|
|
|
|
sEnRxFIFO(cp);
|
|
sEnTransmit(cp);
|
|
|
|
info->flags |= ROCKET_INITIALIZED;
|
|
|
|
/*
|
|
* Set up the tty->alt_speed kludge
|
|
*/
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
|
|
info->port.tty->alt_speed = 57600;
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
|
|
info->port.tty->alt_speed = 115200;
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
|
|
info->port.tty->alt_speed = 230400;
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
|
|
info->port.tty->alt_speed = 460800;
|
|
|
|
configure_r_port(info, NULL);
|
|
if (tty->termios->c_cflag & CBAUD) {
|
|
sSetDTR(cp);
|
|
sSetRTS(cp);
|
|
}
|
|
}
|
|
/* Starts (or resets) the maint polling loop */
|
|
mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
|
|
|
|
retval = block_til_ready(tty, filp, info);
|
|
if (retval) {
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
|
|
#endif
|
|
return retval;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Exception handler that closes a serial port. info->port.count is considered critical.
|
|
*/
|
|
static void rp_close(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
unsigned long flags;
|
|
int timeout;
|
|
CHANNEL_t *cp;
|
|
|
|
if (rocket_paranoia_check(info, "rp_close"))
|
|
return;
|
|
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
|
|
#endif
|
|
|
|
if (tty_hung_up_p(filp))
|
|
return;
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
|
|
if ((tty->count == 1) && (info->port.count != 1)) {
|
|
/*
|
|
* Uh, oh. tty->count is 1, which means that the tty
|
|
* structure will be freed. Info->count should always
|
|
* be one in these conditions. If it's greater than
|
|
* one, we've got real problems, since it means the
|
|
* serial port won't be shutdown.
|
|
*/
|
|
printk(KERN_WARNING "rp_close: bad serial port count; "
|
|
"tty->count is 1, info->port.count is %d\n", info->port.count);
|
|
info->port.count = 1;
|
|
}
|
|
if (--info->port.count < 0) {
|
|
printk(KERN_WARNING "rp_close: bad serial port count for "
|
|
"ttyR%d: %d\n", info->line, info->port.count);
|
|
info->port.count = 0;
|
|
}
|
|
if (info->port.count) {
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
return;
|
|
}
|
|
info->flags |= ROCKET_CLOSING;
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
|
|
cp = &info->channel;
|
|
|
|
/*
|
|
* Notify the line discpline to only process XON/XOFF characters
|
|
*/
|
|
tty->closing = 1;
|
|
|
|
/*
|
|
* If transmission was throttled by the application request,
|
|
* just flush the xmit buffer.
|
|
*/
|
|
if (tty->flow_stopped)
|
|
rp_flush_buffer(tty);
|
|
|
|
/*
|
|
* Wait for the transmit buffer to clear
|
|
*/
|
|
if (info->port.closing_wait != ROCKET_CLOSING_WAIT_NONE)
|
|
tty_wait_until_sent(tty, info->port.closing_wait);
|
|
/*
|
|
* Before we drop DTR, make sure the UART transmitter
|
|
* has completely drained; this is especially
|
|
* important if there is a transmit FIFO!
|
|
*/
|
|
timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
|
|
if (timeout == 0)
|
|
timeout = 1;
|
|
rp_wait_until_sent(tty, timeout);
|
|
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
|
|
sDisTransmit(cp);
|
|
sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
|
|
sDisCTSFlowCtl(cp);
|
|
sDisTxSoftFlowCtl(cp);
|
|
sClrTxXOFF(cp);
|
|
sFlushRxFIFO(cp);
|
|
sFlushTxFIFO(cp);
|
|
sClrRTS(cp);
|
|
if (C_HUPCL(tty))
|
|
sClrDTR(cp);
|
|
|
|
rp_flush_buffer(tty);
|
|
|
|
tty_ldisc_flush(tty);
|
|
|
|
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
|
|
if (info->port.blocked_open) {
|
|
if (info->port.close_delay) {
|
|
msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
|
|
}
|
|
wake_up_interruptible(&info->port.open_wait);
|
|
} else {
|
|
if (info->xmit_buf) {
|
|
free_page((unsigned long) info->xmit_buf);
|
|
info->xmit_buf = NULL;
|
|
}
|
|
}
|
|
info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
|
|
tty->closing = 0;
|
|
complete_all(&info->close_wait);
|
|
atomic_dec(&rp_num_ports_open);
|
|
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "rocket mod-- = %d...\n",
|
|
atomic_read(&rp_num_ports_open));
|
|
printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
|
|
#endif
|
|
|
|
}
|
|
|
|
static void rp_set_termios(struct tty_struct *tty,
|
|
struct ktermios *old_termios)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
unsigned cflag;
|
|
|
|
if (rocket_paranoia_check(info, "rp_set_termios"))
|
|
return;
|
|
|
|
cflag = tty->termios->c_cflag;
|
|
|
|
/*
|
|
* This driver doesn't support CS5 or CS6
|
|
*/
|
|
if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
|
|
tty->termios->c_cflag =
|
|
((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
|
|
/* Or CMSPAR */
|
|
tty->termios->c_cflag &= ~CMSPAR;
|
|
|
|
configure_r_port(info, old_termios);
|
|
|
|
cp = &info->channel;
|
|
|
|
/* Handle transition to B0 status */
|
|
if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
|
|
sClrDTR(cp);
|
|
sClrRTS(cp);
|
|
}
|
|
|
|
/* Handle transition away from B0 status */
|
|
if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
|
|
if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
|
|
sSetRTS(cp);
|
|
sSetDTR(cp);
|
|
}
|
|
|
|
if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
|
|
tty->hw_stopped = 0;
|
|
rp_start(tty);
|
|
}
|
|
}
|
|
|
|
static int rp_break(struct tty_struct *tty, int break_state)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
if (rocket_paranoia_check(info, "rp_break"))
|
|
return -EINVAL;
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
if (break_state == -1)
|
|
sSendBreak(&info->channel);
|
|
else
|
|
sClrBreak(&info->channel);
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* sGetChanRI used to be a macro in rocket_int.h. When the functionality for
|
|
* the UPCI boards was added, it was decided to make this a function because
|
|
* the macro was getting too complicated. All cases except the first one
|
|
* (UPCIRingInd) are taken directly from the original macro.
|
|
*/
|
|
static int sGetChanRI(CHANNEL_T * ChP)
|
|
{
|
|
CONTROLLER_t *CtlP = ChP->CtlP;
|
|
int ChanNum = ChP->ChanNum;
|
|
int RingInd = 0;
|
|
|
|
if (CtlP->UPCIRingInd)
|
|
RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
|
|
else if (CtlP->AltChanRingIndicator)
|
|
RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
|
|
else if (CtlP->boardType == ROCKET_TYPE_PC104)
|
|
RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
|
|
|
|
return RingInd;
|
|
}
|
|
|
|
/********************************************************************************************/
|
|
/* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
|
|
|
|
/*
|
|
* Returns the state of the serial modem control lines. These next 2 functions
|
|
* are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
|
|
*/
|
|
static int rp_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
struct r_port *info = (struct r_port *)tty->driver_data;
|
|
unsigned int control, result, ChanStatus;
|
|
|
|
ChanStatus = sGetChanStatusLo(&info->channel);
|
|
control = info->channel.TxControl[3];
|
|
result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
|
|
((control & SET_DTR) ? TIOCM_DTR : 0) |
|
|
((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
|
|
(sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
|
|
((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
|
|
((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Sets the modem control lines
|
|
*/
|
|
static int rp_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct r_port *info = (struct r_port *)tty->driver_data;
|
|
|
|
if (set & TIOCM_RTS)
|
|
info->channel.TxControl[3] |= SET_RTS;
|
|
if (set & TIOCM_DTR)
|
|
info->channel.TxControl[3] |= SET_DTR;
|
|
if (clear & TIOCM_RTS)
|
|
info->channel.TxControl[3] &= ~SET_RTS;
|
|
if (clear & TIOCM_DTR)
|
|
info->channel.TxControl[3] &= ~SET_DTR;
|
|
|
|
out32(info->channel.IndexAddr, info->channel.TxControl);
|
|
return 0;
|
|
}
|
|
|
|
static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
|
|
{
|
|
struct rocket_config tmp;
|
|
|
|
if (!retinfo)
|
|
return -EFAULT;
|
|
memset(&tmp, 0, sizeof (tmp));
|
|
tmp.line = info->line;
|
|
tmp.flags = info->flags;
|
|
tmp.close_delay = info->port.close_delay;
|
|
tmp.closing_wait = info->port.closing_wait;
|
|
tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
|
|
|
|
if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int set_config(struct r_port *info, struct rocket_config __user *new_info)
|
|
{
|
|
struct rocket_config new_serial;
|
|
|
|
if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
|
|
return -EFAULT;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
{
|
|
if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
|
|
return -EPERM;
|
|
info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
|
|
configure_r_port(info, NULL);
|
|
return 0;
|
|
}
|
|
|
|
info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
|
|
info->port.close_delay = new_serial.close_delay;
|
|
info->port.closing_wait = new_serial.closing_wait;
|
|
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
|
|
info->port.tty->alt_speed = 57600;
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
|
|
info->port.tty->alt_speed = 115200;
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
|
|
info->port.tty->alt_speed = 230400;
|
|
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
|
|
info->port.tty->alt_speed = 460800;
|
|
|
|
configure_r_port(info, NULL);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function fills in a rocket_ports struct with information
|
|
* about what boards/ports are in the system. This info is passed
|
|
* to user space. See setrocket.c where the info is used to create
|
|
* the /dev/ttyRx ports.
|
|
*/
|
|
static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
|
|
{
|
|
struct rocket_ports tmp;
|
|
int board;
|
|
|
|
if (!retports)
|
|
return -EFAULT;
|
|
memset(&tmp, 0, sizeof (tmp));
|
|
tmp.tty_major = rocket_driver->major;
|
|
|
|
for (board = 0; board < 4; board++) {
|
|
tmp.rocketModel[board].model = rocketModel[board].model;
|
|
strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
|
|
tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
|
|
tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
|
|
tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
|
|
}
|
|
if (copy_to_user(retports, &tmp, sizeof (*retports)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int reset_rm2(struct r_port *info, void __user *arg)
|
|
{
|
|
int reset;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&reset, arg, sizeof (int)))
|
|
return -EFAULT;
|
|
if (reset)
|
|
reset = 1;
|
|
|
|
if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
|
|
rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
|
|
return -EINVAL;
|
|
|
|
if (info->ctlp->BusType == isISA)
|
|
sModemReset(info->ctlp, info->chan, reset);
|
|
else
|
|
sPCIModemReset(info->ctlp, info->chan, reset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_version(struct r_port *info, struct rocket_version __user *retvers)
|
|
{
|
|
if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/* IOCTL call handler into the driver */
|
|
static int rp_ioctl(struct tty_struct *tty, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
void __user *argp = (void __user *)arg;
|
|
int ret = 0;
|
|
|
|
if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
|
|
return -ENXIO;
|
|
|
|
lock_kernel();
|
|
|
|
switch (cmd) {
|
|
case RCKP_GET_STRUCT:
|
|
if (copy_to_user(argp, info, sizeof (struct r_port)))
|
|
ret = -EFAULT;
|
|
break;
|
|
case RCKP_GET_CONFIG:
|
|
ret = get_config(info, argp);
|
|
break;
|
|
case RCKP_SET_CONFIG:
|
|
ret = set_config(info, argp);
|
|
break;
|
|
case RCKP_GET_PORTS:
|
|
ret = get_ports(info, argp);
|
|
break;
|
|
case RCKP_RESET_RM2:
|
|
ret = reset_rm2(info, argp);
|
|
break;
|
|
case RCKP_GET_VERSION:
|
|
ret = get_version(info, argp);
|
|
break;
|
|
default:
|
|
ret = -ENOIOCTLCMD;
|
|
}
|
|
unlock_kernel();
|
|
return ret;
|
|
}
|
|
|
|
static void rp_send_xchar(struct tty_struct *tty, char ch)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
|
|
if (rocket_paranoia_check(info, "rp_send_xchar"))
|
|
return;
|
|
|
|
cp = &info->channel;
|
|
if (sGetTxCnt(cp))
|
|
sWriteTxPrioByte(cp, ch);
|
|
else
|
|
sWriteTxByte(sGetTxRxDataIO(cp), ch);
|
|
}
|
|
|
|
static void rp_throttle(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
|
|
#ifdef ROCKET_DEBUG_THROTTLE
|
|
printk(KERN_INFO "throttle %s: %d....\n", tty->name,
|
|
tty->ldisc.chars_in_buffer(tty));
|
|
#endif
|
|
|
|
if (rocket_paranoia_check(info, "rp_throttle"))
|
|
return;
|
|
|
|
cp = &info->channel;
|
|
if (I_IXOFF(tty))
|
|
rp_send_xchar(tty, STOP_CHAR(tty));
|
|
|
|
sClrRTS(&info->channel);
|
|
}
|
|
|
|
static void rp_unthrottle(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
#ifdef ROCKET_DEBUG_THROTTLE
|
|
printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
|
|
tty->ldisc.chars_in_buffer(tty));
|
|
#endif
|
|
|
|
if (rocket_paranoia_check(info, "rp_throttle"))
|
|
return;
|
|
|
|
cp = &info->channel;
|
|
if (I_IXOFF(tty))
|
|
rp_send_xchar(tty, START_CHAR(tty));
|
|
|
|
sSetRTS(&info->channel);
|
|
}
|
|
|
|
/*
|
|
* ------------------------------------------------------------
|
|
* rp_stop() and rp_start()
|
|
*
|
|
* This routines are called before setting or resetting tty->stopped.
|
|
* They enable or disable transmitter interrupts, as necessary.
|
|
* ------------------------------------------------------------
|
|
*/
|
|
static void rp_stop(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
|
|
#ifdef ROCKET_DEBUG_FLOW
|
|
printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
|
|
info->xmit_cnt, info->xmit_fifo_room);
|
|
#endif
|
|
|
|
if (rocket_paranoia_check(info, "rp_stop"))
|
|
return;
|
|
|
|
if (sGetTxCnt(&info->channel))
|
|
sDisTransmit(&info->channel);
|
|
}
|
|
|
|
static void rp_start(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
|
|
#ifdef ROCKET_DEBUG_FLOW
|
|
printk(KERN_INFO "start %s: %d %d....\n", tty->name,
|
|
info->xmit_cnt, info->xmit_fifo_room);
|
|
#endif
|
|
|
|
if (rocket_paranoia_check(info, "rp_stop"))
|
|
return;
|
|
|
|
sEnTransmit(&info->channel);
|
|
set_bit((info->aiop * 8) + info->chan,
|
|
(void *) &xmit_flags[info->board]);
|
|
}
|
|
|
|
/*
|
|
* rp_wait_until_sent() --- wait until the transmitter is empty
|
|
*/
|
|
static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
unsigned long orig_jiffies;
|
|
int check_time, exit_time;
|
|
int txcnt;
|
|
|
|
if (rocket_paranoia_check(info, "rp_wait_until_sent"))
|
|
return;
|
|
|
|
cp = &info->channel;
|
|
|
|
orig_jiffies = jiffies;
|
|
#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
|
|
printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
|
|
jiffies);
|
|
printk(KERN_INFO "cps=%d...\n", info->cps);
|
|
#endif
|
|
lock_kernel();
|
|
while (1) {
|
|
txcnt = sGetTxCnt(cp);
|
|
if (!txcnt) {
|
|
if (sGetChanStatusLo(cp) & TXSHRMT)
|
|
break;
|
|
check_time = (HZ / info->cps) / 5;
|
|
} else {
|
|
check_time = HZ * txcnt / info->cps;
|
|
}
|
|
if (timeout) {
|
|
exit_time = orig_jiffies + timeout - jiffies;
|
|
if (exit_time <= 0)
|
|
break;
|
|
if (exit_time < check_time)
|
|
check_time = exit_time;
|
|
}
|
|
if (check_time == 0)
|
|
check_time = 1;
|
|
#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
|
|
printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
|
|
jiffies, check_time);
|
|
#endif
|
|
msleep_interruptible(jiffies_to_msecs(check_time));
|
|
if (signal_pending(current))
|
|
break;
|
|
}
|
|
__set_current_state(TASK_RUNNING);
|
|
unlock_kernel();
|
|
#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
|
|
printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* rp_hangup() --- called by tty_hangup() when a hangup is signaled.
|
|
*/
|
|
static void rp_hangup(struct tty_struct *tty)
|
|
{
|
|
CHANNEL_t *cp;
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
|
|
if (rocket_paranoia_check(info, "rp_hangup"))
|
|
return;
|
|
|
|
#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
|
|
printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
|
|
#endif
|
|
rp_flush_buffer(tty);
|
|
if (info->flags & ROCKET_CLOSING)
|
|
return;
|
|
if (info->port.count)
|
|
atomic_dec(&rp_num_ports_open);
|
|
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
|
|
info->port.count = 0;
|
|
info->flags &= ~ROCKET_NORMAL_ACTIVE;
|
|
info->port.tty = NULL;
|
|
|
|
cp = &info->channel;
|
|
sDisRxFIFO(cp);
|
|
sDisTransmit(cp);
|
|
sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
|
|
sDisCTSFlowCtl(cp);
|
|
sDisTxSoftFlowCtl(cp);
|
|
sClrTxXOFF(cp);
|
|
info->flags &= ~ROCKET_INITIALIZED;
|
|
|
|
wake_up_interruptible(&info->port.open_wait);
|
|
}
|
|
|
|
/*
|
|
* Exception handler - write char routine. The RocketPort driver uses a
|
|
* double-buffering strategy, with the twist that if the in-memory CPU
|
|
* buffer is empty, and there's space in the transmit FIFO, the
|
|
* writing routines will write directly to transmit FIFO.
|
|
* Write buffer and counters protected by spinlocks
|
|
*/
|
|
static int rp_put_char(struct tty_struct *tty, unsigned char ch)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
unsigned long flags;
|
|
|
|
if (rocket_paranoia_check(info, "rp_put_char"))
|
|
return 0;
|
|
|
|
/*
|
|
* Grab the port write mutex, locking out other processes that try to
|
|
* write to this port
|
|
*/
|
|
mutex_lock(&info->write_mtx);
|
|
|
|
#ifdef ROCKET_DEBUG_WRITE
|
|
printk(KERN_INFO "rp_put_char %c...\n", ch);
|
|
#endif
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
cp = &info->channel;
|
|
|
|
if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
|
|
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
|
|
|
|
if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
|
|
info->xmit_buf[info->xmit_head++] = ch;
|
|
info->xmit_head &= XMIT_BUF_SIZE - 1;
|
|
info->xmit_cnt++;
|
|
set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
} else {
|
|
sOutB(sGetTxRxDataIO(cp), ch);
|
|
info->xmit_fifo_room--;
|
|
}
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
mutex_unlock(&info->write_mtx);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Exception handler - write routine, called when user app writes to the device.
|
|
* A per port write mutex is used to protect from another process writing to
|
|
* this port at the same time. This other process could be running on the other CPU
|
|
* or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
|
|
* Spinlocks protect the info xmit members.
|
|
*/
|
|
static int rp_write(struct tty_struct *tty,
|
|
const unsigned char *buf, int count)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
const unsigned char *b;
|
|
int c, retval = 0;
|
|
unsigned long flags;
|
|
|
|
if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
|
|
return 0;
|
|
|
|
if (mutex_lock_interruptible(&info->write_mtx))
|
|
return -ERESTARTSYS;
|
|
|
|
#ifdef ROCKET_DEBUG_WRITE
|
|
printk(KERN_INFO "rp_write %d chars...\n", count);
|
|
#endif
|
|
cp = &info->channel;
|
|
|
|
if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
|
|
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
|
|
|
|
/*
|
|
* If the write queue for the port is empty, and there is FIFO space, stuff bytes
|
|
* into FIFO. Use the write queue for temp storage.
|
|
*/
|
|
if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
|
|
c = min(count, info->xmit_fifo_room);
|
|
b = buf;
|
|
|
|
/* Push data into FIFO, 2 bytes at a time */
|
|
sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
|
|
|
|
/* If there is a byte remaining, write it */
|
|
if (c & 1)
|
|
sOutB(sGetTxRxDataIO(cp), b[c - 1]);
|
|
|
|
retval += c;
|
|
buf += c;
|
|
count -= c;
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
info->xmit_fifo_room -= c;
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
}
|
|
|
|
/* If count is zero, we wrote it all and are done */
|
|
if (!count)
|
|
goto end;
|
|
|
|
/* Write remaining data into the port's xmit_buf */
|
|
while (1) {
|
|
if (!info->port.tty) /* Seemingly obligatory check... */
|
|
goto end;
|
|
c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
|
|
c = min(c, XMIT_BUF_SIZE - info->xmit_head);
|
|
if (c <= 0)
|
|
break;
|
|
|
|
b = buf;
|
|
memcpy(info->xmit_buf + info->xmit_head, b, c);
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
info->xmit_head =
|
|
(info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
|
|
info->xmit_cnt += c;
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
|
|
buf += c;
|
|
count -= c;
|
|
retval += c;
|
|
}
|
|
|
|
if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
|
|
set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
|
|
|
|
end:
|
|
if (info->xmit_cnt < WAKEUP_CHARS) {
|
|
tty_wakeup(tty);
|
|
#ifdef ROCKETPORT_HAVE_POLL_WAIT
|
|
wake_up_interruptible(&tty->poll_wait);
|
|
#endif
|
|
}
|
|
mutex_unlock(&info->write_mtx);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Return the number of characters that can be sent. We estimate
|
|
* only using the in-memory transmit buffer only, and ignore the
|
|
* potential space in the transmit FIFO.
|
|
*/
|
|
static int rp_write_room(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
int ret;
|
|
|
|
if (rocket_paranoia_check(info, "rp_write_room"))
|
|
return 0;
|
|
|
|
ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
|
|
if (ret < 0)
|
|
ret = 0;
|
|
#ifdef ROCKET_DEBUG_WRITE
|
|
printk(KERN_INFO "rp_write_room returns %d...\n", ret);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Return the number of characters in the buffer. Again, this only
|
|
* counts those characters in the in-memory transmit buffer.
|
|
*/
|
|
static int rp_chars_in_buffer(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
|
|
if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
|
|
return 0;
|
|
|
|
cp = &info->channel;
|
|
|
|
#ifdef ROCKET_DEBUG_WRITE
|
|
printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
|
|
#endif
|
|
return info->xmit_cnt;
|
|
}
|
|
|
|
/*
|
|
* Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
|
|
* r_port struct for the port. Note that spinlock are used to protect info members,
|
|
* do not call this function if the spinlock is already held.
|
|
*/
|
|
static void rp_flush_buffer(struct tty_struct *tty)
|
|
{
|
|
struct r_port *info = (struct r_port *) tty->driver_data;
|
|
CHANNEL_t *cp;
|
|
unsigned long flags;
|
|
|
|
if (rocket_paranoia_check(info, "rp_flush_buffer"))
|
|
return;
|
|
|
|
spin_lock_irqsave(&info->slock, flags);
|
|
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
|
spin_unlock_irqrestore(&info->slock, flags);
|
|
|
|
#ifdef ROCKETPORT_HAVE_POLL_WAIT
|
|
wake_up_interruptible(&tty->poll_wait);
|
|
#endif
|
|
tty_wakeup(tty);
|
|
|
|
cp = &info->channel;
|
|
sFlushTxFIFO(cp);
|
|
}
|
|
|
|
#ifdef CONFIG_PCI
|
|
|
|
static struct pci_device_id __devinitdata rocket_pci_ids[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
|
|
|
|
/*
|
|
* Called when a PCI card is found. Retrieves and stores model information,
|
|
* init's aiopic and serial port hardware.
|
|
* Inputs: i is the board number (0-n)
|
|
*/
|
|
static __init int register_PCI(int i, struct pci_dev *dev)
|
|
{
|
|
int num_aiops, aiop, max_num_aiops, num_chan, chan;
|
|
unsigned int aiopio[MAX_AIOPS_PER_BOARD];
|
|
char *str, *board_type;
|
|
CONTROLLER_t *ctlp;
|
|
|
|
int fast_clock = 0;
|
|
int altChanRingIndicator = 0;
|
|
int ports_per_aiop = 8;
|
|
WordIO_t ConfigIO = 0;
|
|
ByteIO_t UPCIRingInd = 0;
|
|
|
|
if (!dev || pci_enable_device(dev))
|
|
return 0;
|
|
|
|
rcktpt_io_addr[i] = pci_resource_start(dev, 0);
|
|
|
|
rcktpt_type[i] = ROCKET_TYPE_NORMAL;
|
|
rocketModel[i].loadrm2 = 0;
|
|
rocketModel[i].startingPortNumber = nextLineNumber;
|
|
|
|
/* Depending on the model, set up some config variables */
|
|
switch (dev->device) {
|
|
case PCI_DEVICE_ID_RP4QUAD:
|
|
str = "Quadcable";
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 4;
|
|
rocketModel[i].model = MODEL_RP4QUAD;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
|
|
rocketModel[i].numPorts = 4;
|
|
break;
|
|
case PCI_DEVICE_ID_RP8OCTA:
|
|
str = "Octacable";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_RP8OCTA;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_URP8OCTA:
|
|
str = "Octacable";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_UPCI_RP8OCTA;
|
|
strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_RP8INTF:
|
|
str = "8";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_RP8INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_URP8INTF:
|
|
str = "8";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_UPCI_RP8INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_RP8J:
|
|
str = "8J";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_RP8J;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_RP4J:
|
|
str = "4J";
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 4;
|
|
rocketModel[i].model = MODEL_RP4J;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
|
|
rocketModel[i].numPorts = 4;
|
|
break;
|
|
case PCI_DEVICE_ID_RP8SNI:
|
|
str = "8 (DB78 Custom)";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_RP8SNI;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_RP16SNI:
|
|
str = "16 (DB78 Custom)";
|
|
max_num_aiops = 2;
|
|
rocketModel[i].model = MODEL_RP16SNI;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
|
|
rocketModel[i].numPorts = 16;
|
|
break;
|
|
case PCI_DEVICE_ID_RP16INTF:
|
|
str = "16";
|
|
max_num_aiops = 2;
|
|
rocketModel[i].model = MODEL_RP16INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
|
|
rocketModel[i].numPorts = 16;
|
|
break;
|
|
case PCI_DEVICE_ID_URP16INTF:
|
|
str = "16";
|
|
max_num_aiops = 2;
|
|
rocketModel[i].model = MODEL_UPCI_RP16INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
|
|
rocketModel[i].numPorts = 16;
|
|
break;
|
|
case PCI_DEVICE_ID_CRP16INTF:
|
|
str = "16";
|
|
max_num_aiops = 2;
|
|
rocketModel[i].model = MODEL_CPCI_RP16INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
|
|
rocketModel[i].numPorts = 16;
|
|
break;
|
|
case PCI_DEVICE_ID_RP32INTF:
|
|
str = "32";
|
|
max_num_aiops = 4;
|
|
rocketModel[i].model = MODEL_RP32INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
|
|
rocketModel[i].numPorts = 32;
|
|
break;
|
|
case PCI_DEVICE_ID_URP32INTF:
|
|
str = "32";
|
|
max_num_aiops = 4;
|
|
rocketModel[i].model = MODEL_UPCI_RP32INTF;
|
|
strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
|
|
rocketModel[i].numPorts = 32;
|
|
break;
|
|
case PCI_DEVICE_ID_RPP4:
|
|
str = "Plus Quadcable";
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 4;
|
|
altChanRingIndicator++;
|
|
fast_clock++;
|
|
rocketModel[i].model = MODEL_RPP4;
|
|
strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
|
|
rocketModel[i].numPorts = 4;
|
|
break;
|
|
case PCI_DEVICE_ID_RPP8:
|
|
str = "Plus Octacable";
|
|
max_num_aiops = 2;
|
|
ports_per_aiop = 4;
|
|
altChanRingIndicator++;
|
|
fast_clock++;
|
|
rocketModel[i].model = MODEL_RPP8;
|
|
strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
|
|
rocketModel[i].numPorts = 8;
|
|
break;
|
|
case PCI_DEVICE_ID_RP2_232:
|
|
str = "Plus 2 (RS-232)";
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 2;
|
|
altChanRingIndicator++;
|
|
fast_clock++;
|
|
rocketModel[i].model = MODEL_RP2_232;
|
|
strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
|
|
rocketModel[i].numPorts = 2;
|
|
break;
|
|
case PCI_DEVICE_ID_RP2_422:
|
|
str = "Plus 2 (RS-422)";
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 2;
|
|
altChanRingIndicator++;
|
|
fast_clock++;
|
|
rocketModel[i].model = MODEL_RP2_422;
|
|
strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
|
|
rocketModel[i].numPorts = 2;
|
|
break;
|
|
case PCI_DEVICE_ID_RP6M:
|
|
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 6;
|
|
str = "6-port";
|
|
|
|
/* If revision is 1, the rocketmodem flash must be loaded.
|
|
* If it is 2 it is a "socketed" version. */
|
|
if (dev->revision == 1) {
|
|
rcktpt_type[i] = ROCKET_TYPE_MODEMII;
|
|
rocketModel[i].loadrm2 = 1;
|
|
} else {
|
|
rcktpt_type[i] = ROCKET_TYPE_MODEM;
|
|
}
|
|
|
|
rocketModel[i].model = MODEL_RP6M;
|
|
strcpy(rocketModel[i].modelString, "RocketModem 6 port");
|
|
rocketModel[i].numPorts = 6;
|
|
break;
|
|
case PCI_DEVICE_ID_RP4M:
|
|
max_num_aiops = 1;
|
|
ports_per_aiop = 4;
|
|
str = "4-port";
|
|
if (dev->revision == 1) {
|
|
rcktpt_type[i] = ROCKET_TYPE_MODEMII;
|
|
rocketModel[i].loadrm2 = 1;
|
|
} else {
|
|
rcktpt_type[i] = ROCKET_TYPE_MODEM;
|
|
}
|
|
|
|
rocketModel[i].model = MODEL_RP4M;
|
|
strcpy(rocketModel[i].modelString, "RocketModem 4 port");
|
|
rocketModel[i].numPorts = 4;
|
|
break;
|
|
default:
|
|
str = "(unknown/unsupported)";
|
|
max_num_aiops = 0;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Check for UPCI boards.
|
|
*/
|
|
|
|
switch (dev->device) {
|
|
case PCI_DEVICE_ID_URP32INTF:
|
|
case PCI_DEVICE_ID_URP8INTF:
|
|
case PCI_DEVICE_ID_URP16INTF:
|
|
case PCI_DEVICE_ID_CRP16INTF:
|
|
case PCI_DEVICE_ID_URP8OCTA:
|
|
rcktpt_io_addr[i] = pci_resource_start(dev, 2);
|
|
ConfigIO = pci_resource_start(dev, 1);
|
|
if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
|
|
UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
|
|
|
|
/*
|
|
* Check for octa or quad cable.
|
|
*/
|
|
if (!
|
|
(sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
|
|
PCI_GPIO_CTRL_8PORT)) {
|
|
str = "Quadcable";
|
|
ports_per_aiop = 4;
|
|
rocketModel[i].numPorts = 4;
|
|
}
|
|
}
|
|
break;
|
|
case PCI_DEVICE_ID_UPCI_RM3_8PORT:
|
|
str = "8 ports";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
|
|
strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
|
|
rocketModel[i].numPorts = 8;
|
|
rcktpt_io_addr[i] = pci_resource_start(dev, 2);
|
|
UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
|
|
ConfigIO = pci_resource_start(dev, 1);
|
|
rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
|
|
break;
|
|
case PCI_DEVICE_ID_UPCI_RM3_4PORT:
|
|
str = "4 ports";
|
|
max_num_aiops = 1;
|
|
rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
|
|
strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
|
|
rocketModel[i].numPorts = 4;
|
|
rcktpt_io_addr[i] = pci_resource_start(dev, 2);
|
|
UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
|
|
ConfigIO = pci_resource_start(dev, 1);
|
|
rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (rcktpt_type[i]) {
|
|
case ROCKET_TYPE_MODEM:
|
|
board_type = "RocketModem";
|
|
break;
|
|
case ROCKET_TYPE_MODEMII:
|
|
board_type = "RocketModem II";
|
|
break;
|
|
case ROCKET_TYPE_MODEMIII:
|
|
board_type = "RocketModem III";
|
|
break;
|
|
default:
|
|
board_type = "RocketPort";
|
|
break;
|
|
}
|
|
|
|
if (fast_clock) {
|
|
sClockPrescale = 0x12; /* mod 2 (divide by 3) */
|
|
rp_baud_base[i] = 921600;
|
|
} else {
|
|
/*
|
|
* If support_low_speed is set, use the slow clock
|
|
* prescale, which supports 50 bps
|
|
*/
|
|
if (support_low_speed) {
|
|
/* mod 9 (divide by 10) prescale */
|
|
sClockPrescale = 0x19;
|
|
rp_baud_base[i] = 230400;
|
|
} else {
|
|
/* mod 4 (devide by 5) prescale */
|
|
sClockPrescale = 0x14;
|
|
rp_baud_base[i] = 460800;
|
|
}
|
|
}
|
|
|
|
for (aiop = 0; aiop < max_num_aiops; aiop++)
|
|
aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
|
|
ctlp = sCtlNumToCtlPtr(i);
|
|
num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
|
|
for (aiop = 0; aiop < max_num_aiops; aiop++)
|
|
ctlp->AiopNumChan[aiop] = ports_per_aiop;
|
|
|
|
dev_info(&dev->dev, "comtrol PCI controller #%d found at "
|
|
"address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
|
|
i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
|
|
rocketModel[i].startingPortNumber,
|
|
rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
|
|
|
|
if (num_aiops <= 0) {
|
|
rcktpt_io_addr[i] = 0;
|
|
return (0);
|
|
}
|
|
is_PCI[i] = 1;
|
|
|
|
/* Reset the AIOPIC, init the serial ports */
|
|
for (aiop = 0; aiop < num_aiops; aiop++) {
|
|
sResetAiopByNum(ctlp, aiop);
|
|
num_chan = ports_per_aiop;
|
|
for (chan = 0; chan < num_chan; chan++)
|
|
init_r_port(i, aiop, chan, dev);
|
|
}
|
|
|
|
/* Rocket modems must be reset */
|
|
if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
|
|
(rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
|
|
(rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
|
|
num_chan = ports_per_aiop;
|
|
for (chan = 0; chan < num_chan; chan++)
|
|
sPCIModemReset(ctlp, chan, 1);
|
|
msleep(500);
|
|
for (chan = 0; chan < num_chan; chan++)
|
|
sPCIModemReset(ctlp, chan, 0);
|
|
msleep(500);
|
|
rmSpeakerReset(ctlp, rocketModel[i].model);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Probes for PCI cards, inits them if found
|
|
* Input: board_found = number of ISA boards already found, or the
|
|
* starting board number
|
|
* Returns: Number of PCI boards found
|
|
*/
|
|
static int __init init_PCI(int boards_found)
|
|
{
|
|
struct pci_dev *dev = NULL;
|
|
int count = 0;
|
|
|
|
/* Work through the PCI device list, pulling out ours */
|
|
while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
|
|
if (register_PCI(count + boards_found, dev))
|
|
count++;
|
|
}
|
|
return (count);
|
|
}
|
|
|
|
#endif /* CONFIG_PCI */
|
|
|
|
/*
|
|
* Probes for ISA cards
|
|
* Input: i = the board number to look for
|
|
* Returns: 1 if board found, 0 else
|
|
*/
|
|
static int __init init_ISA(int i)
|
|
{
|
|
int num_aiops, num_chan = 0, total_num_chan = 0;
|
|
int aiop, chan;
|
|
unsigned int aiopio[MAX_AIOPS_PER_BOARD];
|
|
CONTROLLER_t *ctlp;
|
|
char *type_string;
|
|
|
|
/* If io_addr is zero, no board configured */
|
|
if (rcktpt_io_addr[i] == 0)
|
|
return (0);
|
|
|
|
/* Reserve the IO region */
|
|
if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
|
|
printk(KERN_ERR "Unable to reserve IO region for configured "
|
|
"ISA RocketPort at address 0x%lx, board not "
|
|
"installed...\n", rcktpt_io_addr[i]);
|
|
rcktpt_io_addr[i] = 0;
|
|
return (0);
|
|
}
|
|
|
|
ctlp = sCtlNumToCtlPtr(i);
|
|
|
|
ctlp->boardType = rcktpt_type[i];
|
|
|
|
switch (rcktpt_type[i]) {
|
|
case ROCKET_TYPE_PC104:
|
|
type_string = "(PC104)";
|
|
break;
|
|
case ROCKET_TYPE_MODEM:
|
|
type_string = "(RocketModem)";
|
|
break;
|
|
case ROCKET_TYPE_MODEMII:
|
|
type_string = "(RocketModem II)";
|
|
break;
|
|
default:
|
|
type_string = "";
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If support_low_speed is set, use the slow clock prescale,
|
|
* which supports 50 bps
|
|
*/
|
|
if (support_low_speed) {
|
|
sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
|
|
rp_baud_base[i] = 230400;
|
|
} else {
|
|
sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
|
|
rp_baud_base[i] = 460800;
|
|
}
|
|
|
|
for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
|
|
aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
|
|
|
|
num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
|
|
|
|
if (ctlp->boardType == ROCKET_TYPE_PC104) {
|
|
sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
|
|
sEnAiop(ctlp, 3); /* CSels used for other stuff */
|
|
}
|
|
|
|
/* If something went wrong initing the AIOP's release the ISA IO memory */
|
|
if (num_aiops <= 0) {
|
|
release_region(rcktpt_io_addr[i], 64);
|
|
rcktpt_io_addr[i] = 0;
|
|
return (0);
|
|
}
|
|
|
|
rocketModel[i].startingPortNumber = nextLineNumber;
|
|
|
|
for (aiop = 0; aiop < num_aiops; aiop++) {
|
|
sResetAiopByNum(ctlp, aiop);
|
|
sEnAiop(ctlp, aiop);
|
|
num_chan = sGetAiopNumChan(ctlp, aiop);
|
|
total_num_chan += num_chan;
|
|
for (chan = 0; chan < num_chan; chan++)
|
|
init_r_port(i, aiop, chan, NULL);
|
|
}
|
|
is_PCI[i] = 0;
|
|
if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
|
|
num_chan = sGetAiopNumChan(ctlp, 0);
|
|
total_num_chan = num_chan;
|
|
for (chan = 0; chan < num_chan; chan++)
|
|
sModemReset(ctlp, chan, 1);
|
|
msleep(500);
|
|
for (chan = 0; chan < num_chan; chan++)
|
|
sModemReset(ctlp, chan, 0);
|
|
msleep(500);
|
|
strcpy(rocketModel[i].modelString, "RocketModem ISA");
|
|
} else {
|
|
strcpy(rocketModel[i].modelString, "RocketPort ISA");
|
|
}
|
|
rocketModel[i].numPorts = total_num_chan;
|
|
rocketModel[i].model = MODEL_ISA;
|
|
|
|
printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
|
|
i, rcktpt_io_addr[i], num_aiops, type_string);
|
|
|
|
printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
|
|
rocketModel[i].modelString,
|
|
rocketModel[i].startingPortNumber,
|
|
rocketModel[i].startingPortNumber +
|
|
rocketModel[i].numPorts - 1);
|
|
|
|
return (1);
|
|
}
|
|
|
|
static const struct tty_operations rocket_ops = {
|
|
.open = rp_open,
|
|
.close = rp_close,
|
|
.write = rp_write,
|
|
.put_char = rp_put_char,
|
|
.write_room = rp_write_room,
|
|
.chars_in_buffer = rp_chars_in_buffer,
|
|
.flush_buffer = rp_flush_buffer,
|
|
.ioctl = rp_ioctl,
|
|
.throttle = rp_throttle,
|
|
.unthrottle = rp_unthrottle,
|
|
.set_termios = rp_set_termios,
|
|
.stop = rp_stop,
|
|
.start = rp_start,
|
|
.hangup = rp_hangup,
|
|
.break_ctl = rp_break,
|
|
.send_xchar = rp_send_xchar,
|
|
.wait_until_sent = rp_wait_until_sent,
|
|
.tiocmget = rp_tiocmget,
|
|
.tiocmset = rp_tiocmset,
|
|
};
|
|
|
|
/*
|
|
* The module "startup" routine; it's run when the module is loaded.
|
|
*/
|
|
static int __init rp_init(void)
|
|
{
|
|
int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
|
|
|
|
printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
|
|
ROCKET_VERSION, ROCKET_DATE);
|
|
|
|
rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
|
|
if (!rocket_driver)
|
|
goto err;
|
|
|
|
/*
|
|
* If board 1 is non-zero, there is at least one ISA configured. If controller is
|
|
* zero, use the default controller IO address of board1 + 0x40.
|
|
*/
|
|
if (board1) {
|
|
if (controller == 0)
|
|
controller = board1 + 0x40;
|
|
} else {
|
|
controller = 0; /* Used as a flag, meaning no ISA boards */
|
|
}
|
|
|
|
/* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
|
|
if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
|
|
printk(KERN_ERR "Unable to reserve IO region for first "
|
|
"configured ISA RocketPort controller 0x%lx. "
|
|
"Driver exiting\n", controller);
|
|
ret = -EBUSY;
|
|
goto err_tty;
|
|
}
|
|
|
|
/* Store ISA variable retrieved from command line or .conf file. */
|
|
rcktpt_io_addr[0] = board1;
|
|
rcktpt_io_addr[1] = board2;
|
|
rcktpt_io_addr[2] = board3;
|
|
rcktpt_io_addr[3] = board4;
|
|
|
|
rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
|
|
rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
|
|
rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
|
|
rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
|
|
rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
|
|
rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
|
|
rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
|
|
rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
|
|
|
|
/*
|
|
* Set up the tty driver structure and then register this
|
|
* driver with the tty layer.
|
|
*/
|
|
|
|
rocket_driver->owner = THIS_MODULE;
|
|
rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
|
|
rocket_driver->name = "ttyR";
|
|
rocket_driver->driver_name = "Comtrol RocketPort";
|
|
rocket_driver->major = TTY_ROCKET_MAJOR;
|
|
rocket_driver->minor_start = 0;
|
|
rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
|
|
rocket_driver->subtype = SERIAL_TYPE_NORMAL;
|
|
rocket_driver->init_termios = tty_std_termios;
|
|
rocket_driver->init_termios.c_cflag =
|
|
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
|
rocket_driver->init_termios.c_ispeed = 9600;
|
|
rocket_driver->init_termios.c_ospeed = 9600;
|
|
#ifdef ROCKET_SOFT_FLOW
|
|
rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
|
|
#endif
|
|
tty_set_operations(rocket_driver, &rocket_ops);
|
|
|
|
ret = tty_register_driver(rocket_driver);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
|
|
goto err_tty;
|
|
}
|
|
|
|
#ifdef ROCKET_DEBUG_OPEN
|
|
printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
|
|
#endif
|
|
|
|
/*
|
|
* OK, let's probe each of the controllers looking for boards. Any boards found
|
|
* will be initialized here.
|
|
*/
|
|
isa_boards_found = 0;
|
|
pci_boards_found = 0;
|
|
|
|
for (i = 0; i < NUM_BOARDS; i++) {
|
|
if (init_ISA(i))
|
|
isa_boards_found++;
|
|
}
|
|
|
|
#ifdef CONFIG_PCI
|
|
if (isa_boards_found < NUM_BOARDS)
|
|
pci_boards_found = init_PCI(isa_boards_found);
|
|
#endif
|
|
|
|
max_board = pci_boards_found + isa_boards_found;
|
|
|
|
if (max_board == 0) {
|
|
printk(KERN_ERR "No rocketport ports found; unloading driver\n");
|
|
ret = -ENXIO;
|
|
goto err_ttyu;
|
|
}
|
|
|
|
return 0;
|
|
err_ttyu:
|
|
tty_unregister_driver(rocket_driver);
|
|
err_tty:
|
|
put_tty_driver(rocket_driver);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void rp_cleanup_module(void)
|
|
{
|
|
int retval;
|
|
int i;
|
|
|
|
del_timer_sync(&rocket_timer);
|
|
|
|
retval = tty_unregister_driver(rocket_driver);
|
|
if (retval)
|
|
printk(KERN_ERR "Error %d while trying to unregister "
|
|
"rocketport driver\n", -retval);
|
|
|
|
for (i = 0; i < MAX_RP_PORTS; i++)
|
|
if (rp_table[i]) {
|
|
tty_unregister_device(rocket_driver, i);
|
|
kfree(rp_table[i]);
|
|
}
|
|
|
|
put_tty_driver(rocket_driver);
|
|
|
|
for (i = 0; i < NUM_BOARDS; i++) {
|
|
if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
|
|
continue;
|
|
release_region(rcktpt_io_addr[i], 64);
|
|
}
|
|
if (controller)
|
|
release_region(controller, 4);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sInitController
|
|
Purpose: Initialization of controller global registers and controller
|
|
structure.
|
|
Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
|
|
IRQNum,Frequency,PeriodicOnly)
|
|
CONTROLLER_T *CtlP; Ptr to controller structure
|
|
int CtlNum; Controller number
|
|
ByteIO_t MudbacIO; Mudbac base I/O address.
|
|
ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
|
|
This list must be in the order the AIOPs will be found on the
|
|
controller. Once an AIOP in the list is not found, it is
|
|
assumed that there are no more AIOPs on the controller.
|
|
int AiopIOListSize; Number of addresses in AiopIOList
|
|
int IRQNum; Interrupt Request number. Can be any of the following:
|
|
0: Disable global interrupts
|
|
3: IRQ 3
|
|
4: IRQ 4
|
|
5: IRQ 5
|
|
9: IRQ 9
|
|
10: IRQ 10
|
|
11: IRQ 11
|
|
12: IRQ 12
|
|
15: IRQ 15
|
|
Byte_t Frequency: A flag identifying the frequency
|
|
of the periodic interrupt, can be any one of the following:
|
|
FREQ_DIS - periodic interrupt disabled
|
|
FREQ_137HZ - 137 Hertz
|
|
FREQ_69HZ - 69 Hertz
|
|
FREQ_34HZ - 34 Hertz
|
|
FREQ_17HZ - 17 Hertz
|
|
FREQ_9HZ - 9 Hertz
|
|
FREQ_4HZ - 4 Hertz
|
|
If IRQNum is set to 0 the Frequency parameter is
|
|
overidden, it is forced to a value of FREQ_DIS.
|
|
int PeriodicOnly: 1 if all interrupts except the periodic
|
|
interrupt are to be blocked.
|
|
0 is both the periodic interrupt and
|
|
other channel interrupts are allowed.
|
|
If IRQNum is set to 0 the PeriodicOnly parameter is
|
|
overidden, it is forced to a value of 0.
|
|
Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
|
|
initialization failed.
|
|
|
|
Comments:
|
|
If periodic interrupts are to be disabled but AIOP interrupts
|
|
are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
|
|
|
|
If interrupts are to be completely disabled set IRQNum to 0.
|
|
|
|
Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
|
|
invalid combination.
|
|
|
|
This function performs initialization of global interrupt modes,
|
|
but it does not actually enable global interrupts. To enable
|
|
and disable global interrupts use functions sEnGlobalInt() and
|
|
sDisGlobalInt(). Enabling of global interrupts is normally not
|
|
done until all other initializations are complete.
|
|
|
|
Even if interrupts are globally enabled, they must also be
|
|
individually enabled for each channel that is to generate
|
|
interrupts.
|
|
|
|
Warnings: No range checking on any of the parameters is done.
|
|
|
|
No context switches are allowed while executing this function.
|
|
|
|
After this function all AIOPs on the controller are disabled,
|
|
they can be enabled with sEnAiop().
|
|
*/
|
|
static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
|
|
ByteIO_t * AiopIOList, int AiopIOListSize,
|
|
int IRQNum, Byte_t Frequency, int PeriodicOnly)
|
|
{
|
|
int i;
|
|
ByteIO_t io;
|
|
int done;
|
|
|
|
CtlP->AiopIntrBits = aiop_intr_bits;
|
|
CtlP->AltChanRingIndicator = 0;
|
|
CtlP->CtlNum = CtlNum;
|
|
CtlP->CtlID = CTLID_0001; /* controller release 1 */
|
|
CtlP->BusType = isISA;
|
|
CtlP->MBaseIO = MudbacIO;
|
|
CtlP->MReg1IO = MudbacIO + 1;
|
|
CtlP->MReg2IO = MudbacIO + 2;
|
|
CtlP->MReg3IO = MudbacIO + 3;
|
|
#if 1
|
|
CtlP->MReg2 = 0; /* interrupt disable */
|
|
CtlP->MReg3 = 0; /* no periodic interrupts */
|
|
#else
|
|
if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
|
|
CtlP->MReg2 = 0; /* interrupt disable */
|
|
CtlP->MReg3 = 0; /* no periodic interrupts */
|
|
} else {
|
|
CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
|
|
CtlP->MReg3 = Frequency; /* set frequency */
|
|
if (PeriodicOnly) { /* periodic interrupt only */
|
|
CtlP->MReg3 |= PERIODIC_ONLY;
|
|
}
|
|
}
|
|
#endif
|
|
sOutB(CtlP->MReg2IO, CtlP->MReg2);
|
|
sOutB(CtlP->MReg3IO, CtlP->MReg3);
|
|
sControllerEOI(CtlP); /* clear EOI if warm init */
|
|
/* Init AIOPs */
|
|
CtlP->NumAiop = 0;
|
|
for (i = done = 0; i < AiopIOListSize; i++) {
|
|
io = AiopIOList[i];
|
|
CtlP->AiopIO[i] = (WordIO_t) io;
|
|
CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
|
|
sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
|
|
sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
|
|
if (done)
|
|
continue;
|
|
sEnAiop(CtlP, i); /* enable the AIOP */
|
|
CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
|
|
if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
|
|
done = 1; /* done looking for AIOPs */
|
|
else {
|
|
CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
|
|
sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
|
|
sOutB(io + _INDX_DATA, sClockPrescale);
|
|
CtlP->NumAiop++; /* bump count of AIOPs */
|
|
}
|
|
sDisAiop(CtlP, i); /* disable AIOP */
|
|
}
|
|
|
|
if (CtlP->NumAiop == 0)
|
|
return (-1);
|
|
else
|
|
return (CtlP->NumAiop);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sPCIInitController
|
|
Purpose: Initialization of controller global registers and controller
|
|
structure.
|
|
Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
|
|
IRQNum,Frequency,PeriodicOnly)
|
|
CONTROLLER_T *CtlP; Ptr to controller structure
|
|
int CtlNum; Controller number
|
|
ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
|
|
This list must be in the order the AIOPs will be found on the
|
|
controller. Once an AIOP in the list is not found, it is
|
|
assumed that there are no more AIOPs on the controller.
|
|
int AiopIOListSize; Number of addresses in AiopIOList
|
|
int IRQNum; Interrupt Request number. Can be any of the following:
|
|
0: Disable global interrupts
|
|
3: IRQ 3
|
|
4: IRQ 4
|
|
5: IRQ 5
|
|
9: IRQ 9
|
|
10: IRQ 10
|
|
11: IRQ 11
|
|
12: IRQ 12
|
|
15: IRQ 15
|
|
Byte_t Frequency: A flag identifying the frequency
|
|
of the periodic interrupt, can be any one of the following:
|
|
FREQ_DIS - periodic interrupt disabled
|
|
FREQ_137HZ - 137 Hertz
|
|
FREQ_69HZ - 69 Hertz
|
|
FREQ_34HZ - 34 Hertz
|
|
FREQ_17HZ - 17 Hertz
|
|
FREQ_9HZ - 9 Hertz
|
|
FREQ_4HZ - 4 Hertz
|
|
If IRQNum is set to 0 the Frequency parameter is
|
|
overidden, it is forced to a value of FREQ_DIS.
|
|
int PeriodicOnly: 1 if all interrupts except the periodic
|
|
interrupt are to be blocked.
|
|
0 is both the periodic interrupt and
|
|
other channel interrupts are allowed.
|
|
If IRQNum is set to 0 the PeriodicOnly parameter is
|
|
overidden, it is forced to a value of 0.
|
|
Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
|
|
initialization failed.
|
|
|
|
Comments:
|
|
If periodic interrupts are to be disabled but AIOP interrupts
|
|
are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
|
|
|
|
If interrupts are to be completely disabled set IRQNum to 0.
|
|
|
|
Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
|
|
invalid combination.
|
|
|
|
This function performs initialization of global interrupt modes,
|
|
but it does not actually enable global interrupts. To enable
|
|
and disable global interrupts use functions sEnGlobalInt() and
|
|
sDisGlobalInt(). Enabling of global interrupts is normally not
|
|
done until all other initializations are complete.
|
|
|
|
Even if interrupts are globally enabled, they must also be
|
|
individually enabled for each channel that is to generate
|
|
interrupts.
|
|
|
|
Warnings: No range checking on any of the parameters is done.
|
|
|
|
No context switches are allowed while executing this function.
|
|
|
|
After this function all AIOPs on the controller are disabled,
|
|
they can be enabled with sEnAiop().
|
|
*/
|
|
static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
|
|
ByteIO_t * AiopIOList, int AiopIOListSize,
|
|
WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
|
|
int PeriodicOnly, int altChanRingIndicator,
|
|
int UPCIRingInd)
|
|
{
|
|
int i;
|
|
ByteIO_t io;
|
|
|
|
CtlP->AltChanRingIndicator = altChanRingIndicator;
|
|
CtlP->UPCIRingInd = UPCIRingInd;
|
|
CtlP->CtlNum = CtlNum;
|
|
CtlP->CtlID = CTLID_0001; /* controller release 1 */
|
|
CtlP->BusType = isPCI; /* controller release 1 */
|
|
|
|
if (ConfigIO) {
|
|
CtlP->isUPCI = 1;
|
|
CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
|
|
CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
|
|
CtlP->AiopIntrBits = upci_aiop_intr_bits;
|
|
} else {
|
|
CtlP->isUPCI = 0;
|
|
CtlP->PCIIO =
|
|
(WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
|
|
CtlP->AiopIntrBits = aiop_intr_bits;
|
|
}
|
|
|
|
sPCIControllerEOI(CtlP); /* clear EOI if warm init */
|
|
/* Init AIOPs */
|
|
CtlP->NumAiop = 0;
|
|
for (i = 0; i < AiopIOListSize; i++) {
|
|
io = AiopIOList[i];
|
|
CtlP->AiopIO[i] = (WordIO_t) io;
|
|
CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
|
|
|
|
CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
|
|
if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
|
|
break; /* done looking for AIOPs */
|
|
|
|
CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
|
|
sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
|
|
sOutB(io + _INDX_DATA, sClockPrescale);
|
|
CtlP->NumAiop++; /* bump count of AIOPs */
|
|
}
|
|
|
|
if (CtlP->NumAiop == 0)
|
|
return (-1);
|
|
else
|
|
return (CtlP->NumAiop);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sReadAiopID
|
|
Purpose: Read the AIOP idenfication number directly from an AIOP.
|
|
Call: sReadAiopID(io)
|
|
ByteIO_t io: AIOP base I/O address
|
|
Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
|
|
is replace by an identifying number.
|
|
Flag AIOPID_NULL if no valid AIOP is found
|
|
Warnings: No context switches are allowed while executing this function.
|
|
|
|
*/
|
|
static int sReadAiopID(ByteIO_t io)
|
|
{
|
|
Byte_t AiopID; /* ID byte from AIOP */
|
|
|
|
sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
|
|
sOutB(io + _CMD_REG, 0x0);
|
|
AiopID = sInW(io + _CHN_STAT0) & 0x07;
|
|
if (AiopID == 0x06)
|
|
return (1);
|
|
else /* AIOP does not exist */
|
|
return (-1);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sReadAiopNumChan
|
|
Purpose: Read the number of channels available in an AIOP directly from
|
|
an AIOP.
|
|
Call: sReadAiopNumChan(io)
|
|
WordIO_t io: AIOP base I/O address
|
|
Return: int: The number of channels available
|
|
Comments: The number of channels is determined by write/reads from identical
|
|
offsets within the SRAM address spaces for channels 0 and 4.
|
|
If the channel 4 space is mirrored to channel 0 it is a 4 channel
|
|
AIOP, otherwise it is an 8 channel.
|
|
Warnings: No context switches are allowed while executing this function.
|
|
*/
|
|
static int sReadAiopNumChan(WordIO_t io)
|
|
{
|
|
Word_t x;
|
|
static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
|
|
|
|
/* write to chan 0 SRAM */
|
|
out32((DWordIO_t) io + _INDX_ADDR, R);
|
|
sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
|
|
x = sInW(io + _INDX_DATA);
|
|
sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
|
|
if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
|
|
return (8);
|
|
else
|
|
return (4);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sInitChan
|
|
Purpose: Initialization of a channel and channel structure
|
|
Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
|
|
CONTROLLER_T *CtlP; Ptr to controller structure
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
int AiopNum; AIOP number within controller
|
|
int ChanNum; Channel number within AIOP
|
|
Return: int: 1 if initialization succeeded, 0 if it fails because channel
|
|
number exceeds number of channels available in AIOP.
|
|
Comments: This function must be called before a channel can be used.
|
|
Warnings: No range checking on any of the parameters is done.
|
|
|
|
No context switches are allowed while executing this function.
|
|
*/
|
|
static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
|
|
int ChanNum)
|
|
{
|
|
int i;
|
|
WordIO_t AiopIO;
|
|
WordIO_t ChIOOff;
|
|
Byte_t *ChR;
|
|
Word_t ChOff;
|
|
static Byte_t R[4];
|
|
int brd9600;
|
|
|
|
if (ChanNum >= CtlP->AiopNumChan[AiopNum])
|
|
return 0; /* exceeds num chans in AIOP */
|
|
|
|
/* Channel, AIOP, and controller identifiers */
|
|
ChP->CtlP = CtlP;
|
|
ChP->ChanID = CtlP->AiopID[AiopNum];
|
|
ChP->AiopNum = AiopNum;
|
|
ChP->ChanNum = ChanNum;
|
|
|
|
/* Global direct addresses */
|
|
AiopIO = CtlP->AiopIO[AiopNum];
|
|
ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
|
|
ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
|
|
ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
|
|
ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
|
|
ChP->IndexData = AiopIO + _INDX_DATA;
|
|
|
|
/* Channel direct addresses */
|
|
ChIOOff = AiopIO + ChP->ChanNum * 2;
|
|
ChP->TxRxData = ChIOOff + _TD0;
|
|
ChP->ChanStat = ChIOOff + _CHN_STAT0;
|
|
ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
|
|
ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
|
|
|
|
/* Initialize the channel from the RData array */
|
|
for (i = 0; i < RDATASIZE; i += 4) {
|
|
R[0] = RData[i];
|
|
R[1] = RData[i + 1] + 0x10 * ChanNum;
|
|
R[2] = RData[i + 2];
|
|
R[3] = RData[i + 3];
|
|
out32(ChP->IndexAddr, R);
|
|
}
|
|
|
|
ChR = ChP->R;
|
|
for (i = 0; i < RREGDATASIZE; i += 4) {
|
|
ChR[i] = RRegData[i];
|
|
ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
|
|
ChR[i + 2] = RRegData[i + 2];
|
|
ChR[i + 3] = RRegData[i + 3];
|
|
}
|
|
|
|
/* Indexed registers */
|
|
ChOff = (Word_t) ChanNum *0x1000;
|
|
|
|
if (sClockPrescale == 0x14)
|
|
brd9600 = 47;
|
|
else
|
|
brd9600 = 23;
|
|
|
|
ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
|
|
ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
|
|
ChP->BaudDiv[2] = (Byte_t) brd9600;
|
|
ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
|
|
out32(ChP->IndexAddr, ChP->BaudDiv);
|
|
|
|
ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
|
|
ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
|
|
ChP->TxControl[2] = 0;
|
|
ChP->TxControl[3] = 0;
|
|
out32(ChP->IndexAddr, ChP->TxControl);
|
|
|
|
ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
|
|
ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
|
|
ChP->RxControl[2] = 0;
|
|
ChP->RxControl[3] = 0;
|
|
out32(ChP->IndexAddr, ChP->RxControl);
|
|
|
|
ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
|
|
ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
|
|
ChP->TxEnables[2] = 0;
|
|
ChP->TxEnables[3] = 0;
|
|
out32(ChP->IndexAddr, ChP->TxEnables);
|
|
|
|
ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
|
|
ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
|
|
ChP->TxCompare[2] = 0;
|
|
ChP->TxCompare[3] = 0;
|
|
out32(ChP->IndexAddr, ChP->TxCompare);
|
|
|
|
ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
|
|
ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
|
|
ChP->TxReplace1[2] = 0;
|
|
ChP->TxReplace1[3] = 0;
|
|
out32(ChP->IndexAddr, ChP->TxReplace1);
|
|
|
|
ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
|
|
ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
|
|
ChP->TxReplace2[2] = 0;
|
|
ChP->TxReplace2[3] = 0;
|
|
out32(ChP->IndexAddr, ChP->TxReplace2);
|
|
|
|
ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
|
|
ChP->TxFIFO = ChOff + _TX_FIFO;
|
|
|
|
sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
|
|
sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
|
|
sOutW(ChP->IndexData, 0);
|
|
ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
|
|
ChP->RxFIFO = ChOff + _RX_FIFO;
|
|
|
|
sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
|
|
sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
|
|
sOutW(ChP->IndexData, 0);
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
|
|
sOutW(ChP->IndexData, 0);
|
|
ChP->TxPrioCnt = ChOff + _TXP_CNT;
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
|
|
sOutB(ChP->IndexData, 0);
|
|
ChP->TxPrioPtr = ChOff + _TXP_PNTR;
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
|
|
sOutB(ChP->IndexData, 0);
|
|
ChP->TxPrioBuf = ChOff + _TXP_BUF;
|
|
sEnRxProcessor(ChP); /* start the Rx processor */
|
|
|
|
return 1;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sStopRxProcessor
|
|
Purpose: Stop the receive processor from processing a channel.
|
|
Call: sStopRxProcessor(ChP)
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
|
|
Comments: The receive processor can be started again with sStartRxProcessor().
|
|
This function causes the receive processor to skip over the
|
|
stopped channel. It does not stop it from processing other channels.
|
|
|
|
Warnings: No context switches are allowed while executing this function.
|
|
|
|
Do not leave the receive processor stopped for more than one
|
|
character time.
|
|
|
|
After calling this function a delay of 4 uS is required to ensure
|
|
that the receive processor is no longer processing this channel.
|
|
*/
|
|
static void sStopRxProcessor(CHANNEL_T * ChP)
|
|
{
|
|
Byte_t R[4];
|
|
|
|
R[0] = ChP->R[0];
|
|
R[1] = ChP->R[1];
|
|
R[2] = 0x0a;
|
|
R[3] = ChP->R[3];
|
|
out32(ChP->IndexAddr, R);
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sFlushRxFIFO
|
|
Purpose: Flush the Rx FIFO
|
|
Call: sFlushRxFIFO(ChP)
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
Return: void
|
|
Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
|
|
while it is being flushed the receive processor is stopped
|
|
and the transmitter is disabled. After these operations a
|
|
4 uS delay is done before clearing the pointers to allow
|
|
the receive processor to stop. These items are handled inside
|
|
this function.
|
|
Warnings: No context switches are allowed while executing this function.
|
|
*/
|
|
static void sFlushRxFIFO(CHANNEL_T * ChP)
|
|
{
|
|
int i;
|
|
Byte_t Ch; /* channel number within AIOP */
|
|
int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
|
|
|
|
if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
|
|
return; /* don't need to flush */
|
|
|
|
RxFIFOEnabled = 0;
|
|
if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
|
|
RxFIFOEnabled = 1;
|
|
sDisRxFIFO(ChP); /* disable it */
|
|
for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
|
|
sInB(ChP->IntChan); /* depends on bus i/o timing */
|
|
}
|
|
sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
|
|
Ch = (Byte_t) sGetChanNum(ChP);
|
|
sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
|
|
sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
|
|
sOutW(ChP->IndexData, 0);
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
|
|
sOutW(ChP->IndexData, 0);
|
|
if (RxFIFOEnabled)
|
|
sEnRxFIFO(ChP); /* enable Rx FIFO */
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sFlushTxFIFO
|
|
Purpose: Flush the Tx FIFO
|
|
Call: sFlushTxFIFO(ChP)
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
Return: void
|
|
Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
|
|
while it is being flushed the receive processor is stopped
|
|
and the transmitter is disabled. After these operations a
|
|
4 uS delay is done before clearing the pointers to allow
|
|
the receive processor to stop. These items are handled inside
|
|
this function.
|
|
Warnings: No context switches are allowed while executing this function.
|
|
*/
|
|
static void sFlushTxFIFO(CHANNEL_T * ChP)
|
|
{
|
|
int i;
|
|
Byte_t Ch; /* channel number within AIOP */
|
|
int TxEnabled; /* 1 if transmitter enabled */
|
|
|
|
if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
|
|
return; /* don't need to flush */
|
|
|
|
TxEnabled = 0;
|
|
if (ChP->TxControl[3] & TX_ENABLE) {
|
|
TxEnabled = 1;
|
|
sDisTransmit(ChP); /* disable transmitter */
|
|
}
|
|
sStopRxProcessor(ChP); /* stop Rx processor */
|
|
for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
|
|
sInB(ChP->IntChan); /* depends on bus i/o timing */
|
|
Ch = (Byte_t) sGetChanNum(ChP);
|
|
sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
|
|
sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
|
|
sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
|
|
sOutW(ChP->IndexData, 0);
|
|
if (TxEnabled)
|
|
sEnTransmit(ChP); /* enable transmitter */
|
|
sStartRxProcessor(ChP); /* restart Rx processor */
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sWriteTxPrioByte
|
|
Purpose: Write a byte of priority transmit data to a channel
|
|
Call: sWriteTxPrioByte(ChP,Data)
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
Byte_t Data; The transmit data byte
|
|
|
|
Return: int: 1 if the bytes is successfully written, otherwise 0.
|
|
|
|
Comments: The priority byte is transmitted before any data in the Tx FIFO.
|
|
|
|
Warnings: No context switches are allowed while executing this function.
|
|
*/
|
|
static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
|
|
{
|
|
Byte_t DWBuf[4]; /* buffer for double word writes */
|
|
Word_t *WordPtr; /* must be far because Win SS != DS */
|
|
register DWordIO_t IndexAddr;
|
|
|
|
if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
|
|
IndexAddr = ChP->IndexAddr;
|
|
sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
|
|
if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
|
|
return (0); /* nothing sent */
|
|
|
|
WordPtr = (Word_t *) (&DWBuf[0]);
|
|
*WordPtr = ChP->TxPrioBuf; /* data byte address */
|
|
|
|
DWBuf[2] = Data; /* data byte value */
|
|
out32(IndexAddr, DWBuf); /* write it out */
|
|
|
|
*WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
|
|
|
|
DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
|
|
DWBuf[3] = 0; /* priority buffer pointer */
|
|
out32(IndexAddr, DWBuf); /* write it out */
|
|
} else { /* write it to Tx FIFO */
|
|
|
|
sWriteTxByte(sGetTxRxDataIO(ChP), Data);
|
|
}
|
|
return (1); /* 1 byte sent */
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sEnInterrupts
|
|
Purpose: Enable one or more interrupts for a channel
|
|
Call: sEnInterrupts(ChP,Flags)
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
Word_t Flags: Interrupt enable flags, can be any combination
|
|
of the following flags:
|
|
TXINT_EN: Interrupt on Tx FIFO empty
|
|
RXINT_EN: Interrupt on Rx FIFO at trigger level (see
|
|
sSetRxTrigger())
|
|
SRCINT_EN: Interrupt on SRC (Special Rx Condition)
|
|
MCINT_EN: Interrupt on modem input change
|
|
CHANINT_EN: Allow channel interrupt signal to the AIOP's
|
|
Interrupt Channel Register.
|
|
Return: void
|
|
Comments: If an interrupt enable flag is set in Flags, that interrupt will be
|
|
enabled. If an interrupt enable flag is not set in Flags, that
|
|
interrupt will not be changed. Interrupts can be disabled with
|
|
function sDisInterrupts().
|
|
|
|
This function sets the appropriate bit for the channel in the AIOP's
|
|
Interrupt Mask Register if the CHANINT_EN flag is set. This allows
|
|
this channel's bit to be set in the AIOP's Interrupt Channel Register.
|
|
|
|
Interrupts must also be globally enabled before channel interrupts
|
|
will be passed on to the host. This is done with function
|
|
sEnGlobalInt().
|
|
|
|
In some cases it may be desirable to disable interrupts globally but
|
|
enable channel interrupts. This would allow the global interrupt
|
|
status register to be used to determine which AIOPs need service.
|
|
*/
|
|
static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
|
|
{
|
|
Byte_t Mask; /* Interrupt Mask Register */
|
|
|
|
ChP->RxControl[2] |=
|
|
((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
|
|
|
|
out32(ChP->IndexAddr, ChP->RxControl);
|
|
|
|
ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
|
|
|
|
out32(ChP->IndexAddr, ChP->TxControl);
|
|
|
|
if (Flags & CHANINT_EN) {
|
|
Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
|
|
sOutB(ChP->IntMask, Mask);
|
|
}
|
|
}
|
|
|
|
/***************************************************************************
|
|
Function: sDisInterrupts
|
|
Purpose: Disable one or more interrupts for a channel
|
|
Call: sDisInterrupts(ChP,Flags)
|
|
CHANNEL_T *ChP; Ptr to channel structure
|
|
Word_t Flags: Interrupt flags, can be any combination
|
|
of the following flags:
|
|
TXINT_EN: Interrupt on Tx FIFO empty
|
|
RXINT_EN: Interrupt on Rx FIFO at trigger level (see
|
|
sSetRxTrigger())
|
|
SRCINT_EN: Interrupt on SRC (Special Rx Condition)
|
|
MCINT_EN: Interrupt on modem input change
|
|
CHANINT_EN: Disable channel interrupt signal to the
|
|
AIOP's Interrupt Channel Register.
|
|
Return: void
|
|
Comments: If an interrupt flag is set in Flags, that interrupt will be
|
|
disabled. If an interrupt flag is not set in Flags, that
|
|
interrupt will not be changed. Interrupts can be enabled with
|
|
function sEnInterrupts().
|
|
|
|
This function clears the appropriate bit for the channel in the AIOP's
|
|
Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
|
|
this channel's bit from being set in the AIOP's Interrupt Channel
|
|
Register.
|
|
*/
|
|
static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
|
|
{
|
|
Byte_t Mask; /* Interrupt Mask Register */
|
|
|
|
ChP->RxControl[2] &=
|
|
~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
|
|
out32(ChP->IndexAddr, ChP->RxControl);
|
|
ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
|
|
out32(ChP->IndexAddr, ChP->TxControl);
|
|
|
|
if (Flags & CHANINT_EN) {
|
|
Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
|
|
sOutB(ChP->IntMask, Mask);
|
|
}
|
|
}
|
|
|
|
static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
|
|
{
|
|
sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
|
|
}
|
|
|
|
/*
|
|
* Not an official SSCI function, but how to reset RocketModems.
|
|
* ISA bus version
|
|
*/
|
|
static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
|
|
{
|
|
ByteIO_t addr;
|
|
Byte_t val;
|
|
|
|
addr = CtlP->AiopIO[0] + 0x400;
|
|
val = sInB(CtlP->MReg3IO);
|
|
/* if AIOP[1] is not enabled, enable it */
|
|
if ((val & 2) == 0) {
|
|
val = sInB(CtlP->MReg2IO);
|
|
sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
|
|
sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
|
|
}
|
|
|
|
sEnAiop(CtlP, 1);
|
|
if (!on)
|
|
addr += 8;
|
|
sOutB(addr + chan, 0); /* apply or remove reset */
|
|
sDisAiop(CtlP, 1);
|
|
}
|
|
|
|
/*
|
|
* Not an official SSCI function, but how to reset RocketModems.
|
|
* PCI bus version
|
|
*/
|
|
static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
|
|
{
|
|
ByteIO_t addr;
|
|
|
|
addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
|
|
if (!on)
|
|
addr += 8;
|
|
sOutB(addr + chan, 0); /* apply or remove reset */
|
|
}
|
|
|
|
/* Resets the speaker controller on RocketModem II and III devices */
|
|
static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
|
|
{
|
|
ByteIO_t addr;
|
|
|
|
/* RocketModem II speaker control is at the 8th port location of offset 0x40 */
|
|
if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
|
|
addr = CtlP->AiopIO[0] + 0x4F;
|
|
sOutB(addr, 0);
|
|
}
|
|
|
|
/* RocketModem III speaker control is at the 1st port location of offset 0x80 */
|
|
if ((model == MODEL_UPCI_RM3_8PORT)
|
|
|| (model == MODEL_UPCI_RM3_4PORT)) {
|
|
addr = CtlP->AiopIO[0] + 0x88;
|
|
sOutB(addr, 0);
|
|
}
|
|
}
|
|
|
|
/* Returns the line number given the controller (board), aiop and channel number */
|
|
static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
|
|
{
|
|
return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
|
|
}
|
|
|
|
/*
|
|
* Stores the line number associated with a given controller (board), aiop
|
|
* and channel number.
|
|
* Returns: The line number assigned
|
|
*/
|
|
static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
|
|
{
|
|
lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
|
|
return (nextLineNumber - 1);
|
|
}
|