[1ec501c] | 1 | /* |
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| 2 | * General Serial I/O functions. |
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| 3 | * |
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| 4 | * This file contains the functions for performing serial I/O. |
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| 5 | * The actual system calls (console_*) should be in the BSP part |
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| 6 | * of the source tree. That way different BSPs can use whichever |
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| 7 | * SMCs and SCCs they want. Originally, all the stuff was in |
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| 8 | * this file, and it caused problems with one BSP using SCC2 |
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| 9 | * as /dev/console, others using SMC1 for /dev/console, etc. |
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| 10 | * |
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| 11 | * On-chip resources used: |
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| 12 | * resource minor note |
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| 13 | * SMC1 0 |
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| 14 | * SMC2 1 |
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| 15 | * SCC1 2 |
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| 16 | * SCC2 3 |
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| 17 | * SCC3 4 |
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| 18 | * SCC4 5 |
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| 19 | * BRG1 |
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| 20 | * BRG2 |
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| 21 | * BRG3 |
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| 22 | * BRG4 |
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| 23 | * Author: Jay Monkman (jmonkman@frasca.com) |
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| 24 | * Copyright (C) 1998 by Frasca International, Inc. |
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| 25 | * |
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| 26 | * Derived from c/src/lib/libbsp/m68k/gen360/console/console.c written by: |
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| 27 | * W. Eric Norum |
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| 28 | * Saskatchewan Accelerator Laboratory |
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| 29 | * University of Saskatchewan |
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| 30 | * Saskatoon, Saskatchewan, CANADA |
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| 31 | * eric@skatter.usask.ca |
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| 32 | * |
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| 33 | * COPYRIGHT (c) 1989-1998. |
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| 34 | * On-Line Applications Research Corporation (OAR). |
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| 35 | * |
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| 36 | * Modifications by Darlene Stewart <Darlene.Stewart@iit.nrc.ca> |
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| 37 | * and Charles-Antoine Gauthier <charles.gauthier@iit.nrc.ca> |
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| 38 | * Copyright (c) 1999, National Research Council of Canada |
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| 39 | * |
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| 40 | * Modifications by Andy Dachs <a.dachs@sstl.co.uk> to add MPC8260 |
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| 41 | * support. |
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| 42 | * Copyright (c) 2001, Surrey Satellite Technology Ltd |
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| 43 | * SCC1 and SSC2 are used on MPC8260ADS board |
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| 44 | * SMCs are unused |
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| 45 | * |
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| 46 | * The license and distribution terms for this file may be |
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| 47 | * found in the file LICENSE in this distribution or at |
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| 48 | * |
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| 49 | * http://www.OARcorp.com/rtems/license.html. |
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| 50 | * |
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| 51 | * $Id$ |
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| 52 | */ |
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| 53 | |
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| 54 | #include <rtems.h> |
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| 55 | #include <rtems/libio.h> |
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| 56 | #include <mpc8260.h> |
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| 57 | #include <mpc8260/console.h> |
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| 58 | #include <mpc8260/cpm.h> |
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| 59 | #include <stdlib.h> |
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| 60 | #include <unistd.h> |
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| 61 | #include <termios.h> |
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| 62 | #include <bsp/irq.h> |
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[5c76213] | 63 | #include <rtems/bspIo.h> /* for printk */ |
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[1ec501c] | 64 | |
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| 65 | |
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| 66 | |
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| 67 | /* BSP supplied routine */ |
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| 68 | extern int mbx8xx_console_get_configuration(); |
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| 69 | |
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| 70 | |
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| 71 | /* |
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| 72 | * Interrupt-driven input buffer |
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| 73 | */ |
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| 74 | #define RXBUFSIZE 16 |
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| 75 | |
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| 76 | /* |
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| 77 | * I/O buffers and pointers to buffer descriptors. |
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| 78 | * Currently, single buffered input is done. This will work only |
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| 79 | * if the Rx interrupts are serviced quickly. |
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| 80 | * |
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| 81 | * TODO: Add a least double buffering for safety. |
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| 82 | */ |
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| 83 | static volatile char rxBuf[NUM_PORTS][RXBUFSIZE]; |
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| 84 | static volatile char txBuf[NUM_PORTS]; |
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| 85 | |
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| 86 | /* SCC/SMC buffer descriptors */ |
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| 87 | static volatile m8260BufferDescriptor_t *RxBd[NUM_PORTS], *TxBd[NUM_PORTS]; |
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| 88 | |
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| 89 | |
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| 90 | |
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| 91 | /* Used to track termios private data for callbacks */ |
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| 92 | struct rtems_termios_tty *ttyp[NUM_PORTS]; |
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| 93 | |
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| 94 | /* Used to record previous ISR */ |
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| 95 | static rtems_isr_entry old_handler[NUM_PORTS]; |
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| 96 | |
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| 97 | /* |
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| 98 | * Device-specific routines |
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| 99 | */ |
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| 100 | void m8xx_console_reserve_resources(rtems_configuration_table *); |
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| 101 | static int m8xx_smc_set_attributes(int, const struct termios*); |
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| 102 | static int m8xx_scc_set_attributes(int, const struct termios*); |
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| 103 | static rtems_isr m8xx_smc1_interrupt_handler(rtems_vector_number); |
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| 104 | static rtems_isr m8xx_smc2_interrupt_handler(rtems_vector_number); |
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| 105 | static rtems_isr m8xx_scc1_interrupt_handler(rtems_vector_number); |
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| 106 | static rtems_isr m8xx_scc2_interrupt_handler(rtems_vector_number); |
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| 107 | static rtems_isr m8xx_scc3_interrupt_handler(rtems_vector_number); |
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| 108 | static rtems_isr m8xx_scc4_interrupt_handler(rtems_vector_number); |
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| 109 | |
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| 110 | |
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| 111 | |
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| 112 | /* |
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| 113 | * Hardware-dependent portion of tcsetattr(). |
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| 114 | */ |
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| 115 | static int |
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| 116 | m8xx_smc_set_attributes (int minor, const struct termios *t) |
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| 117 | { |
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| 118 | int baud, brg=0, csize=0, ssize, psize; |
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| 119 | rtems_unsigned16 clen=0, cstopb, parenb, parodd, cread; |
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| 120 | |
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| 121 | /* Baud rate */ |
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| 122 | switch (t->c_cflag & CBAUD) { |
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| 123 | default: baud = -1; break; |
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| 124 | case B50: baud = 50; break; |
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| 125 | case B75: baud = 75; break; |
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| 126 | case B110: baud = 110; break; |
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| 127 | case B134: baud = 134; break; |
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| 128 | case B150: baud = 150; break; |
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| 129 | case B200: baud = 200; break; |
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| 130 | case B300: baud = 300; break; |
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| 131 | case B600: baud = 600; break; |
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| 132 | case B1200: baud = 1200; break; |
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| 133 | case B1800: baud = 1800; break; |
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| 134 | case B2400: baud = 2400; break; |
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| 135 | case B4800: baud = 4800; break; |
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| 136 | case B9600: baud = 9600; break; |
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| 137 | case B19200: baud = 19200; break; |
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| 138 | case B38400: baud = 38400; break; |
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| 139 | case B57600: baud = 57600; break; |
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| 140 | case B115200: baud = 115200; break; |
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| 141 | case B230400: baud = 230400; break; |
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| 142 | case B460800: baud = 460800; break; |
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| 143 | } |
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| 144 | if (baud > 0) { |
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| 145 | switch( minor ) { |
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| 146 | case SMC1_MINOR: |
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| 147 | /* SMC1 can only choose between BRG1 and 7 */ |
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| 148 | brg = m8xx_get_brg( M8260_SMC1_BRGS, baud*16 ) + 1; |
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| 149 | m8260.cmxsmr &= ~0x30; |
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| 150 | m8260.cmxsmr |= (brg==1? 0x00: 0x10 ); |
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| 151 | break; |
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| 152 | case SMC2_MINOR: |
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| 153 | /* SMC2 can only choose between BRG2 and 8 */ |
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| 154 | brg = m8xx_get_brg( M8260_SMC2_BRGS, baud*16 ) + 1; |
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| 155 | m8260.cmxsmr &= ~0x30; |
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| 156 | m8260.cmxsmr |= (brg==2? 0x00: 0x01 ); |
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| 157 | break; |
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| 158 | } |
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| 159 | } |
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| 160 | |
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| 161 | /* Number of data bits */ |
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| 162 | switch ( t->c_cflag & CSIZE ) { |
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| 163 | case CS5: csize = 5; break; |
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| 164 | case CS6: csize = 6; break; |
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| 165 | case CS7: csize = 7; break; |
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| 166 | case CS8: csize = 8; break; |
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| 167 | } |
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| 168 | |
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| 169 | /* Stop bits */ |
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| 170 | if ( t->c_cflag & CSTOPB ) { |
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| 171 | cstopb = 0x0400; /* Two stop bits */ |
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| 172 | ssize = 2; |
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| 173 | } else { |
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| 174 | cstopb = 0x0000; /* One stop bit */ |
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| 175 | ssize = 1; |
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| 176 | } |
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| 177 | |
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| 178 | /* Parity */ |
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| 179 | if ( t->c_cflag & PARENB ) { |
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| 180 | parenb = 0x0200; /* Parity enabled on Tx and Rx */ |
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| 181 | psize = 1; |
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| 182 | } else { |
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| 183 | parenb = 0x0000; /* No parity on Tx and Rx */ |
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| 184 | psize = 0; |
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| 185 | } |
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| 186 | |
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| 187 | if ( t->c_cflag & PARODD ) |
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| 188 | parodd = 0x0000; /* Odd parity */ |
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| 189 | else |
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| 190 | parodd = 0x0100; |
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| 191 | |
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| 192 | /* |
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| 193 | * Character Length = start + data + parity + stop - 1 |
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| 194 | */ |
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| 195 | switch ( 1 + csize + psize + ssize - 1 ) { |
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| 196 | case 6: clen = 0x3000; break; |
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| 197 | case 7: clen = 0x3800; break; |
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| 198 | case 8: clen = 0x4000; break; |
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| 199 | case 9: clen = 0x4800; break; |
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| 200 | case 10: clen = 0x5000; break; |
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| 201 | case 11: clen = 0x5800; break; |
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| 202 | } |
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| 203 | |
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| 204 | if ( t->c_cflag & CREAD ) |
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| 205 | cread = 0x0023; /* UART normal operation, enable Rx and Tx */ |
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| 206 | else |
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| 207 | cread = 0x0021; /* UART normal operation, enable Tx */ |
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| 208 | |
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| 209 | /* Write the SIMODE/SMCMR registers */ |
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| 210 | switch (minor) { |
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| 211 | case SMC1_MINOR: |
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| 212 | /* |
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| 213 | m8xx.simode = ( (m8xx.simode & 0xffff8fff) | (brg << 12) ); |
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| 214 | */ |
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| 215 | m8260.smc1.smcmr = clen | cstopb | parenb | parodd | cread; |
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| 216 | break; |
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| 217 | case SMC2_MINOR: |
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| 218 | /* CHECK THIS */ |
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| 219 | /* |
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| 220 | m8xx.simode = ( (m8xx.simode & 0x8fffffff) | (brg << 28) ); |
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| 221 | */ |
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| 222 | m8260.smc2.smcmr = clen | cstopb | parenb | parodd | cread; |
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| 223 | break; |
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| 224 | } |
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| 225 | return 0; |
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| 226 | } |
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| 227 | |
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| 228 | |
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| 229 | static int |
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| 230 | m8xx_scc_set_attributes (int minor, const struct termios *t) |
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| 231 | { |
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| 232 | int baud, brg=0; |
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| 233 | rtems_unsigned16 csize=0, cstopb, parenb, parodd; |
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| 234 | |
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| 235 | /* Baud rate */ |
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| 236 | switch (t->c_cflag & CBAUD) { |
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| 237 | default: baud = -1; break; |
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| 238 | case B50: baud = 50; break; |
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| 239 | case B75: baud = 75; break; |
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| 240 | case B110: baud = 110; break; |
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| 241 | case B134: baud = 134; break; |
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| 242 | case B150: baud = 150; break; |
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| 243 | case B200: baud = 200; break; |
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| 244 | case B300: baud = 300; break; |
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| 245 | case B600: baud = 600; break; |
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| 246 | case B1200: baud = 1200; break; |
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| 247 | case B1800: baud = 1800; break; |
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| 248 | case B2400: baud = 2400; break; |
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| 249 | case B4800: baud = 4800; break; |
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| 250 | case B9600: baud = 9600; break; |
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| 251 | case B19200: baud = 19200; break; |
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| 252 | case B38400: baud = 38400; break; |
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| 253 | case B57600: baud = 57600; break; |
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| 254 | case B115200: baud = 115200; break; |
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| 255 | case B230400: baud = 230400; break; |
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| 256 | case B460800: baud = 460800; break; |
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| 257 | } |
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| 258 | if (baud > 0) { |
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| 259 | brg = m8xx_get_brg( M8260_SCC_BRGS, baud*16 ); |
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| 260 | m8260.cmxscr &= ~(0xFF000000 >> (8*(minor-SCC1_MINOR)) ); |
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| 261 | m8260.cmxscr |= ((brg<<(3+8*(3-(minor-SCC1_MINOR)))) & |
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| 262 | (brg<<(8*(3-(minor-SCC1_MINOR))))); |
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| 263 | } |
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| 264 | /* Number of data bits */ |
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| 265 | switch ( t->c_cflag & CSIZE ) { |
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| 266 | case CS5: csize = 0x0000; break; |
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| 267 | case CS6: csize = 0x1000; break; |
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| 268 | case CS7: csize = 0x2000; break; |
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| 269 | case CS8: csize = 0x3000; break; |
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| 270 | } |
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| 271 | |
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| 272 | /* Stop bits */ |
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| 273 | if ( t->c_cflag & CSTOPB ) |
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| 274 | cstopb = 0x4000; /* Two stop bits */ |
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| 275 | else |
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| 276 | cstopb = 0x0000; /* One stop bit */ |
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| 277 | |
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| 278 | /* Parity */ |
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| 279 | if ( t->c_cflag & PARENB ) |
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| 280 | parenb = 0x0010; /* Parity enabled on Tx and Rx */ |
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| 281 | else |
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| 282 | parenb = 0x0000; /* No parity on Tx and Rx */ |
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| 283 | |
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| 284 | if ( t->c_cflag & PARODD ) |
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| 285 | parodd = 0x0000; /* Odd parity */ |
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| 286 | else |
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| 287 | parodd = 0x000a; |
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| 288 | |
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| 289 | /* Write the SICR/PSMR Registers */ |
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| 290 | switch (minor) { |
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| 291 | case SCC1_MINOR: |
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| 292 | /* |
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| 293 | m8xx.sicr = ( (m8xx.sicr & 0xffffc0ff) | (brg << 11) | (brg << 8) ); |
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| 294 | */ |
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| 295 | m8260.scc1.psmr = ( (cstopb | csize | parenb | parodd) | (m8260.scc1.psmr & 0x8fe0) ); |
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| 296 | break; |
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| 297 | case SCC2_MINOR: |
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| 298 | /* |
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| 299 | m8xx.sicr = ( (m8xx.sicr & 0xffffc0ff) | (brg << 11) | (brg << 8) ); |
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| 300 | */ |
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| 301 | m8260.scc2.psmr = ( (cstopb | csize | parenb | parodd) | (m8260.scc2.psmr & 0x8fe0) ); |
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| 302 | break; |
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| 303 | case SCC3_MINOR: |
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| 304 | /* |
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| 305 | m8xx.sicr = ( (m8xx.sicr & 0xffc0ffff) | (brg << 19) | (brg << 16) ); |
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| 306 | */ |
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| 307 | m8260.scc3.psmr = ( (cstopb | csize | parenb | parodd) | (m8260.scc3.psmr & 0x8fe0) ); |
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| 308 | break; |
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| 309 | case SCC4_MINOR: |
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| 310 | /* |
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| 311 | m8xx.sicr = ( (m8xx.sicr & 0xc0ffffff) | (brg << 27) | (brg << 24) ); |
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| 312 | */ |
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| 313 | m8260.scc4.psmr = ( (cstopb | csize | parenb | parodd) | (m8260.scc4.psmr & 0x8fe0) ); |
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| 314 | break; |
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| 315 | } |
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| 316 | |
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| 317 | return 0; |
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| 318 | } |
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| 319 | |
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| 320 | |
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| 321 | int |
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| 322 | m8xx_uart_setAttributes( |
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| 323 | int minor, |
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| 324 | const struct termios *t |
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| 325 | ) |
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| 326 | { |
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| 327 | /* |
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| 328 | * Check that port number is valid |
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| 329 | */ |
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| 330 | if ( (minor < SMC1_MINOR) || (minor > NUM_PORTS-1) ) |
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| 331 | return 0; |
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| 332 | |
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| 333 | switch (minor) { |
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| 334 | case SMC1_MINOR: |
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| 335 | case SMC2_MINOR: |
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| 336 | return m8xx_smc_set_attributes( minor, t ); |
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| 337 | |
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| 338 | case SCC1_MINOR: |
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| 339 | case SCC2_MINOR: |
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| 340 | case SCC3_MINOR: |
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| 341 | case SCC4_MINOR: |
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| 342 | return m8xx_scc_set_attributes( minor, t ); |
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| 343 | } |
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| 344 | return 0; |
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| 345 | } |
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| 346 | |
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| 347 | |
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| 348 | /* |
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| 349 | * Interrupt handlers |
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| 350 | */ |
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| 351 | |
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| 352 | static void |
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| 353 | m8xx_scc1_interrupt_handler (rtems_vector_number v) |
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| 354 | { |
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| 355 | int nb_overflow; |
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| 356 | |
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| 357 | /* |
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| 358 | * Buffer received? |
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| 359 | */ |
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| 360 | if ((m8260.scc1.sccm & M8260_SCCE_RX) && (m8260.scc1.scce & M8260_SCCE_RX)) { |
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| 361 | m8260.scc1.scce = M8260_SCCE_RX; /* Clear the event */ |
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| 362 | |
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| 363 | |
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| 364 | /* Check that the buffer is ours */ |
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| 365 | if ((RxBd[SCC1_MINOR]->status & M8260_BD_EMPTY) == 0) { |
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| 366 | rtems_cache_invalidate_multiple_data_lines( |
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| 367 | (const void *) RxBd[SCC1_MINOR]->buffer, |
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| 368 | RxBd[SCC1_MINOR]->length ); |
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| 369 | nb_overflow = rtems_termios_enqueue_raw_characters( |
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| 370 | (void *)ttyp[SCC1_MINOR], |
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| 371 | (char *)RxBd[SCC1_MINOR]->buffer, |
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| 372 | (int)RxBd[SCC1_MINOR]->length ); |
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| 373 | RxBd[SCC1_MINOR]->status = M8260_BD_EMPTY | M8260_BD_WRAP | |
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| 374 | M8260_BD_INTERRUPT; |
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| 375 | } |
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| 376 | } |
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| 377 | |
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| 378 | /* |
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| 379 | * Buffer transmitted? |
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| 380 | */ |
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| 381 | if (m8260.scc1.scce & M8260_SCCE_TX) { |
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| 382 | m8260.scc1.scce = M8260_SCCE_TX; /* Clear the event */ |
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| 383 | |
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| 384 | /* Check that the buffer is ours */ |
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| 385 | if ((TxBd[SCC1_MINOR]->status & M8260_BD_READY) == 0) |
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| 386 | rtems_termios_dequeue_characters ( |
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| 387 | (void *)ttyp[SCC1_MINOR], |
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| 388 | (int)TxBd[SCC1_MINOR]->length); |
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| 389 | } |
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| 390 | |
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| 391 | #if 0 |
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| 392 | m8260.sipnr_l |= M8260_SIMASK_SCC1; /* Clear pending register */ |
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| 393 | #endif |
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| 394 | } |
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| 395 | |
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| 396 | static void |
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| 397 | m8xx_scc2_interrupt_handler (rtems_vector_number v) |
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| 398 | { |
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| 399 | int nb_overflow; |
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| 400 | |
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| 401 | /* |
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| 402 | * Buffer received? |
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| 403 | */ |
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| 404 | if ((m8260.scc2.sccm & M8260_SCCE_RX) && (m8260.scc2.scce & M8260_SCCE_RX)) { |
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| 405 | m8260.scc2.scce = M8260_SCCE_RX; /* Clear the event */ |
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| 406 | |
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| 407 | |
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| 408 | /* Check that the buffer is ours */ |
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| 409 | if ((RxBd[SCC2_MINOR]->status & M8260_BD_EMPTY) == 0) { |
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| 410 | rtems_cache_invalidate_multiple_data_lines( |
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| 411 | (const void *) RxBd[SCC2_MINOR]->buffer, |
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| 412 | RxBd[SCC2_MINOR]->length ); |
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| 413 | nb_overflow = rtems_termios_enqueue_raw_characters( |
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| 414 | (void *)ttyp[SCC2_MINOR], |
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| 415 | (char *)RxBd[SCC2_MINOR]->buffer, |
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| 416 | (int)RxBd[SCC2_MINOR]->length ); |
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| 417 | RxBd[SCC2_MINOR]->status = M8260_BD_EMPTY | M8260_BD_WRAP | |
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| 418 | M8260_BD_INTERRUPT; |
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| 419 | } |
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| 420 | } |
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| 421 | |
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| 422 | /* |
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| 423 | * Buffer transmitted? |
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| 424 | */ |
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| 425 | if (m8260.scc2.scce & M8260_SCCE_TX) { |
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| 426 | m8260.scc2.scce = M8260_SCCE_TX; /* Clear the event */ |
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| 427 | |
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| 428 | /* Check that the buffer is ours */ |
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| 429 | if ((TxBd[SCC2_MINOR]->status & M8260_BD_READY) == 0) |
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| 430 | rtems_termios_dequeue_characters ( |
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| 431 | (void *)ttyp[SCC2_MINOR], |
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| 432 | (int)TxBd[SCC2_MINOR]->length); |
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| 433 | } |
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| 434 | |
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| 435 | #if 0 |
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| 436 | m8260.sipnr_l |= M8260_SIMASK_SCC2; /* Clear pending register */ |
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| 437 | #endif |
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| 438 | } |
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| 439 | |
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| 440 | |
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| 441 | static void |
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| 442 | m8xx_scc3_interrupt_handler (rtems_vector_number v) |
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| 443 | { |
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| 444 | int nb_overflow; |
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| 445 | |
---|
| 446 | /* |
---|
| 447 | * Buffer received? |
---|
| 448 | */ |
---|
| 449 | if ((m8260.scc3.sccm & M8260_SCCE_RX) && (m8260.scc3.scce & M8260_SCCE_RX)) { |
---|
| 450 | m8260.scc3.scce = M8260_SCCE_RX; /* Clear the event */ |
---|
| 451 | |
---|
| 452 | |
---|
| 453 | /* Check that the buffer is ours */ |
---|
| 454 | if ((RxBd[SCC3_MINOR]->status & M8260_BD_EMPTY) == 0) { |
---|
| 455 | rtems_cache_invalidate_multiple_data_lines( |
---|
| 456 | (const void *) RxBd[SCC3_MINOR]->buffer, |
---|
| 457 | RxBd[SCC3_MINOR]->length ); |
---|
| 458 | nb_overflow = rtems_termios_enqueue_raw_characters( |
---|
| 459 | (void *)ttyp[SCC3_MINOR], |
---|
| 460 | (char *)RxBd[SCC3_MINOR]->buffer, |
---|
| 461 | (int)RxBd[SCC3_MINOR]->length ); |
---|
| 462 | RxBd[SCC3_MINOR]->status = M8260_BD_EMPTY | M8260_BD_WRAP | |
---|
| 463 | M8260_BD_INTERRUPT; |
---|
| 464 | } |
---|
| 465 | } |
---|
| 466 | |
---|
| 467 | /* |
---|
| 468 | * Buffer transmitted? |
---|
| 469 | */ |
---|
| 470 | if (m8260.scc3.scce & M8260_SCCE_TX) { |
---|
| 471 | m8260.scc3.scce = M8260_SCCE_TX; /* Clear the event */ |
---|
| 472 | |
---|
| 473 | /* Check that the buffer is ours */ |
---|
| 474 | if ((TxBd[SCC3_MINOR]->status & M8260_BD_READY) == 0) |
---|
| 475 | rtems_termios_dequeue_characters ( |
---|
| 476 | (void *)ttyp[SCC3_MINOR], |
---|
| 477 | (int)TxBd[SCC3_MINOR]->length); |
---|
| 478 | } |
---|
| 479 | |
---|
| 480 | |
---|
| 481 | #if 0 |
---|
| 482 | m8260.sipnr_l |= M8260_SIMASK_SCC3; /* Clear pending register */ |
---|
| 483 | #endif |
---|
| 484 | } |
---|
| 485 | |
---|
| 486 | |
---|
| 487 | static void |
---|
| 488 | m8xx_scc4_interrupt_handler (rtems_vector_number v) |
---|
| 489 | { |
---|
| 490 | int nb_overflow; |
---|
| 491 | |
---|
| 492 | /* |
---|
| 493 | * Buffer received? |
---|
| 494 | */ |
---|
| 495 | if ((m8260.scc4.sccm & M8260_SCCE_RX) && (m8260.scc4.scce & M8260_SCCE_RX)) { |
---|
| 496 | m8260.scc4.scce = M8260_SCCE_RX; /* Clear the event */ |
---|
| 497 | |
---|
| 498 | |
---|
| 499 | /* Check that the buffer is ours */ |
---|
| 500 | if ((RxBd[SCC4_MINOR]->status & M8260_BD_EMPTY) == 0) { |
---|
| 501 | rtems_cache_invalidate_multiple_data_lines( |
---|
| 502 | (const void *) RxBd[SCC4_MINOR]->buffer, |
---|
| 503 | RxBd[SCC4_MINOR]->length ); |
---|
| 504 | nb_overflow = rtems_termios_enqueue_raw_characters( |
---|
| 505 | (void *)ttyp[SCC4_MINOR], |
---|
| 506 | (char *)RxBd[SCC4_MINOR]->buffer, |
---|
| 507 | (int)RxBd[SCC4_MINOR]->length ); |
---|
| 508 | RxBd[SCC4_MINOR]->status = M8260_BD_EMPTY | M8260_BD_WRAP | |
---|
| 509 | M8260_BD_INTERRUPT; |
---|
| 510 | } |
---|
| 511 | } |
---|
| 512 | |
---|
| 513 | /* |
---|
| 514 | * Buffer transmitted? |
---|
| 515 | */ |
---|
| 516 | if (m8260.scc4.scce & M8260_SCCE_TX) { |
---|
| 517 | m8260.scc4.scce = M8260_SCCE_TX; /* Clear the event */ |
---|
| 518 | |
---|
| 519 | /* Check that the buffer is ours */ |
---|
| 520 | if ((TxBd[SCC4_MINOR]->status & M8260_BD_READY) == 0) |
---|
| 521 | rtems_termios_dequeue_characters ( |
---|
| 522 | (void *)ttyp[SCC4_MINOR], |
---|
| 523 | (int)TxBd[SCC4_MINOR]->length); |
---|
| 524 | } |
---|
| 525 | |
---|
| 526 | #if 0 |
---|
| 527 | m8260.sipnr_l |= M8260_SIMASK_SCC4; /* Clear pending register */ |
---|
| 528 | #endif |
---|
| 529 | } |
---|
| 530 | |
---|
| 531 | static void |
---|
| 532 | m8xx_smc1_interrupt_handler (rtems_vector_number v) |
---|
| 533 | { |
---|
| 534 | int nb_overflow; |
---|
| 535 | |
---|
| 536 | /* |
---|
| 537 | * Buffer received? |
---|
| 538 | */ |
---|
| 539 | if (m8260.smc1.smce & M8260_SMCE_RX) { |
---|
| 540 | m8260.smc1.smce = M8260_SMCE_RX; /* Clear the event */ |
---|
| 541 | |
---|
| 542 | |
---|
| 543 | /* Check that the buffer is ours */ |
---|
| 544 | if ((RxBd[SMC1_MINOR]->status & M8260_BD_EMPTY) == 0) { |
---|
| 545 | rtems_cache_invalidate_multiple_data_lines( |
---|
| 546 | (const void *) RxBd[SMC1_MINOR]->buffer, |
---|
| 547 | RxBd[SMC1_MINOR]->length ); |
---|
| 548 | nb_overflow = rtems_termios_enqueue_raw_characters( |
---|
| 549 | (void *)ttyp[SMC1_MINOR], |
---|
| 550 | (char *)RxBd[SMC1_MINOR]->buffer, |
---|
| 551 | (int)RxBd[SMC1_MINOR]->length ); |
---|
| 552 | RxBd[SMC1_MINOR]->status = M8260_BD_EMPTY | M8260_BD_WRAP | |
---|
| 553 | M8260_BD_INTERRUPT; |
---|
| 554 | } |
---|
| 555 | } |
---|
| 556 | |
---|
| 557 | /* |
---|
| 558 | * Buffer transmitted? |
---|
| 559 | */ |
---|
| 560 | if (m8260.smc1.smce & M8260_SMCE_TX) { |
---|
| 561 | m8260.smc1.smce = M8260_SMCE_TX; /* Clear the event */ |
---|
| 562 | |
---|
| 563 | /* Check that the buffer is ours */ |
---|
| 564 | if ((TxBd[SMC1_MINOR]->status & M8260_BD_READY) == 0) |
---|
| 565 | rtems_termios_dequeue_characters ( |
---|
| 566 | (void *)ttyp[SMC1_MINOR], |
---|
| 567 | (int)TxBd[SMC1_MINOR]->length); |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | #if 0 |
---|
| 571 | m8260.sipnr_l = 0x00001000; /* Clear SMC1 interrupt-in-service bit */ |
---|
| 572 | #endif |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | |
---|
| 576 | static void |
---|
| 577 | m8xx_smc2_interrupt_handler (rtems_vector_number v) |
---|
| 578 | { |
---|
| 579 | int nb_overflow; |
---|
| 580 | |
---|
| 581 | /* |
---|
| 582 | * Buffer received? |
---|
| 583 | */ |
---|
| 584 | if (m8260.smc2.smce & M8260_SMCE_RX) { |
---|
| 585 | m8260.smc2.smce = M8260_SMCE_RX; /* Clear the event */ |
---|
| 586 | |
---|
| 587 | |
---|
| 588 | /* Check that the buffer is ours */ |
---|
| 589 | if ((RxBd[SMC2_MINOR]->status & M8260_BD_EMPTY) == 0) { |
---|
| 590 | rtems_cache_invalidate_multiple_data_lines( |
---|
| 591 | (const void *) RxBd[SMC2_MINOR]->buffer, |
---|
| 592 | RxBd[SMC2_MINOR]->length ); |
---|
| 593 | nb_overflow = rtems_termios_enqueue_raw_characters( |
---|
| 594 | (void *)ttyp[SMC2_MINOR], |
---|
| 595 | (char *)RxBd[SMC2_MINOR]->buffer, |
---|
| 596 | (int)RxBd[SMC2_MINOR]->length ); |
---|
| 597 | RxBd[SMC2_MINOR]->status = M8260_BD_EMPTY | M8260_BD_WRAP | |
---|
| 598 | M8260_BD_INTERRUPT; |
---|
| 599 | } |
---|
| 600 | } |
---|
| 601 | |
---|
| 602 | /* |
---|
| 603 | * Buffer transmitted? |
---|
| 604 | */ |
---|
| 605 | if (m8260.smc2.smce & M8260_SMCE_TX) { |
---|
| 606 | m8260.smc2.smce = M8260_SMCE_TX; /* Clear the event */ |
---|
| 607 | |
---|
| 608 | /* Check that the buffer is ours */ |
---|
| 609 | if ((TxBd[SMC2_MINOR]->status & M8260_BD_READY) == 0) |
---|
| 610 | rtems_termios_dequeue_characters ( |
---|
| 611 | (void *)ttyp[SMC2_MINOR], |
---|
| 612 | (int)TxBd[SMC2_MINOR]->length); |
---|
| 613 | } |
---|
| 614 | |
---|
| 615 | #if 0 |
---|
| 616 | m8260.sipnr_l = 0x00000800; /* Clear SMC2 interrupt-in-service bit */ |
---|
| 617 | #endif |
---|
| 618 | } |
---|
| 619 | |
---|
| 620 | |
---|
| 621 | void m8xx_scc_enable(const rtems_irq_connect_data* ptr) |
---|
| 622 | { |
---|
| 623 | volatile m8260SCCRegisters_t *sccregs = 0; |
---|
| 624 | switch (ptr->name) { |
---|
| 625 | case BSP_CPM_IRQ_SCC4 : |
---|
| 626 | m8260.sipnr_l |= M8260_SIMASK_SCC4; |
---|
| 627 | sccregs = &m8260.scc4; |
---|
| 628 | break; |
---|
| 629 | case BSP_CPM_IRQ_SCC3 : |
---|
| 630 | m8260.sipnr_l |= M8260_SIMASK_SCC3; |
---|
| 631 | sccregs = &m8260.scc3; |
---|
| 632 | break; |
---|
| 633 | case BSP_CPM_IRQ_SCC2 : |
---|
| 634 | m8260.sipnr_l |= M8260_SIMASK_SCC2; |
---|
| 635 | sccregs = &m8260.scc2; |
---|
| 636 | break; |
---|
| 637 | case BSP_CPM_IRQ_SCC1 : |
---|
| 638 | m8260.sipnr_l |= M8260_SIMASK_SCC1; |
---|
| 639 | sccregs = &m8260.scc1; |
---|
| 640 | break; |
---|
| 641 | default: |
---|
| 642 | break; |
---|
| 643 | } |
---|
| 644 | sccregs->sccm = 3; |
---|
| 645 | } |
---|
| 646 | |
---|
| 647 | void m8xx_scc_disable(const rtems_irq_connect_data* ptr) |
---|
| 648 | { |
---|
| 649 | volatile m8260SCCRegisters_t *sccregs = 0; |
---|
| 650 | switch (ptr->name) { |
---|
| 651 | case BSP_CPM_IRQ_SCC4 : |
---|
| 652 | sccregs = &m8260.scc4; |
---|
| 653 | break; |
---|
| 654 | case BSP_CPM_IRQ_SCC3 : |
---|
| 655 | sccregs = &m8260.scc3; |
---|
| 656 | break; |
---|
| 657 | case BSP_CPM_IRQ_SCC2 : |
---|
| 658 | sccregs = &m8260.scc2; |
---|
| 659 | break; |
---|
| 660 | case BSP_CPM_IRQ_SCC1 : |
---|
| 661 | sccregs = &m8260.scc1; |
---|
| 662 | break; |
---|
| 663 | default: |
---|
| 664 | break; |
---|
| 665 | } |
---|
| 666 | sccregs->sccm &= (~3); |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | int m8xx_scc_isOn(const rtems_irq_connect_data* ptr) |
---|
| 670 | { |
---|
| 671 | return BSP_irq_enabled_at_cpm (ptr->name); |
---|
| 672 | } |
---|
| 673 | |
---|
| 674 | static rtems_irq_connect_data consoleIrqData = |
---|
| 675 | { |
---|
| 676 | BSP_CPM_IRQ_SCC1, |
---|
| 677 | (rtems_irq_hdl)m8xx_scc1_interrupt_handler, |
---|
| 678 | (rtems_irq_enable) m8xx_scc_enable, |
---|
| 679 | (rtems_irq_disable) m8xx_scc_disable, |
---|
| 680 | (rtems_irq_is_enabled) m8xx_scc_isOn |
---|
| 681 | }; |
---|
| 682 | |
---|
| 683 | |
---|
| 684 | void |
---|
| 685 | m8xx_uart_scc_initialize (int minor) |
---|
| 686 | { |
---|
| 687 | unsigned char brg; |
---|
| 688 | volatile m8260SCCparms_t *sccparms = 0; |
---|
| 689 | volatile m8260SCCRegisters_t *sccregs = 0; |
---|
| 690 | |
---|
| 691 | /* |
---|
| 692 | * Check that minor number is valid |
---|
| 693 | */ |
---|
| 694 | if ( (minor < SCC1_MINOR) || (minor > NUM_PORTS-1) ) |
---|
| 695 | return; |
---|
| 696 | |
---|
| 697 | /* Get the sicr clock source bit values for 9600 bps */ |
---|
| 698 | brg = m8xx_get_brg(M8260_SCC_BRGS, 9600*16); |
---|
| 699 | |
---|
| 700 | m8260.cmxscr &= ~(0xFF000000 >> (8*(minor-SCC1_MINOR)) ); |
---|
| 701 | m8260.cmxscr |= (brg<<(3+8*(3-(minor-SCC1_MINOR)))); |
---|
| 702 | m8260.cmxscr |= (brg<<(8*(3-(minor-SCC1_MINOR)))); |
---|
| 703 | |
---|
| 704 | /* |
---|
| 705 | * Allocate buffer descriptors |
---|
| 706 | */ |
---|
| 707 | RxBd[minor] = m8xx_bd_allocate(1); |
---|
| 708 | TxBd[minor] = m8xx_bd_allocate(1); |
---|
| 709 | |
---|
| 710 | /* |
---|
| 711 | * Configure ports to enable TXDx and RXDx pins |
---|
| 712 | */ |
---|
| 713 | |
---|
| 714 | m8260.ppard |= (0x07 << ((minor-SCC1_MINOR)*3)); |
---|
| 715 | m8260.psord &= ~(0x07 << ((minor-SCC1_MINOR)*3)); |
---|
| 716 | if( minor == SCC1_MINOR ) |
---|
| 717 | m8260.psord |= 0x02; |
---|
| 718 | m8260.pdird |= (0x06 << ((minor-SCC1_MINOR)*3)); |
---|
| 719 | m8260.pdird &= ~(0x01 << ((minor-SCC1_MINOR)*3)); |
---|
| 720 | |
---|
| 721 | |
---|
| 722 | /* |
---|
| 723 | * Set up SMC1 parameter RAM common to all protocols |
---|
| 724 | */ |
---|
| 725 | if( minor == SCC1_MINOR ) { |
---|
| 726 | sccparms = (m8260SCCparms_t*)&m8260.scc1p; |
---|
| 727 | sccregs = (m8260SCCRegisters_t*)&m8260.scc1; |
---|
| 728 | } |
---|
| 729 | else if( minor == SCC2_MINOR ) { |
---|
| 730 | sccparms = (m8260SCCparms_t*)&m8260.scc2p; |
---|
| 731 | sccregs = (m8260SCCRegisters_t*)&m8260.scc2; |
---|
| 732 | } |
---|
| 733 | else if( minor == SCC3_MINOR ) { |
---|
| 734 | sccparms = (m8260SCCparms_t*)&m8260.scc3p; |
---|
| 735 | sccregs = (m8260SCCRegisters_t*)&m8260.scc3; |
---|
| 736 | } |
---|
| 737 | else { |
---|
| 738 | sccparms = (m8260SCCparms_t*)&m8260.scc4p; |
---|
| 739 | sccregs = (m8260SCCRegisters_t*)&m8260.scc4; |
---|
| 740 | } |
---|
| 741 | |
---|
| 742 | sccparms->rbase = (char *)RxBd[minor] - (char *)&m8260; |
---|
| 743 | sccparms->tbase = (char *)TxBd[minor] - (char *)&m8260; |
---|
| 744 | |
---|
| 745 | |
---|
| 746 | |
---|
| 747 | |
---|
| 748 | sccparms->rfcr = M8260_RFCR_MOT | M8260_RFCR_60X_BUS; |
---|
| 749 | sccparms->tfcr = M8260_TFCR_MOT | M8260_TFCR_60X_BUS; |
---|
| 750 | if ( (mbx8xx_console_get_configuration() & 0x06) == 0x02 ) |
---|
| 751 | sccparms->mrblr = RXBUFSIZE; /* Maximum Rx buffer size */ |
---|
| 752 | else |
---|
| 753 | sccparms->mrblr = 1; /* Maximum Rx buffer size */ |
---|
| 754 | sccparms->un.uart.max_idl = 10; /* Set nb of idle chars to close buffer */ |
---|
| 755 | sccparms->un.uart.brkcr = 0; /* Set nb of breaks to send for STOP Tx */ |
---|
| 756 | |
---|
| 757 | sccparms->un.uart.parec = 0; /* Clear parity error counter */ |
---|
| 758 | sccparms->un.uart.frmec = 0; /* Clear framing error counter */ |
---|
| 759 | sccparms->un.uart.nosec = 0; /* Clear noise counter */ |
---|
| 760 | sccparms->un.uart.brkec = 0; /* Clear break counter */ |
---|
| 761 | |
---|
| 762 | sccparms->un.uart.uaddr[0] = 0; /* Not in multidrop mode, so clear */ |
---|
| 763 | sccparms->un.uart.uaddr[1] = 0; /* Not in multidrop mode, so clear */ |
---|
| 764 | sccparms->un.uart.toseq = 0; /* Tx Out-Of-SEQuence--no XON/XOFF now */ |
---|
| 765 | |
---|
| 766 | sccparms->un.uart.character[0] = 0x8000; /* Entry is invalid */ |
---|
| 767 | sccparms->un.uart.character[1] = 0x8000; /* Entry is invalid */ |
---|
| 768 | sccparms->un.uart.character[2] = 0x8000; /* Entry is invalid */ |
---|
| 769 | sccparms->un.uart.character[3] = 0x8000; /* Entry is invalid */ |
---|
| 770 | sccparms->un.uart.character[4] = 0x8000; /* Entry is invalid */ |
---|
| 771 | sccparms->un.uart.character[5] = 0x8000; /* Entry is invalid */ |
---|
| 772 | sccparms->un.uart.character[6] = 0x8000; /* Entry is invalid */ |
---|
| 773 | sccparms->un.uart.character[7] = 0x8000; /* Entry is invalid */ |
---|
| 774 | |
---|
| 775 | |
---|
| 776 | sccparms->un.uart.rccm = 0xc0ff; /* No masking */ |
---|
| 777 | |
---|
| 778 | /* |
---|
| 779 | * Set up the Receive Buffer Descriptor |
---|
| 780 | */ |
---|
| 781 | RxBd[minor]->status = M8260_BD_EMPTY | M8260_BD_WRAP | M8260_BD_INTERRUPT; |
---|
| 782 | RxBd[minor]->length = 0; |
---|
| 783 | RxBd[minor]->buffer = rxBuf[minor]; |
---|
| 784 | |
---|
| 785 | /* |
---|
| 786 | * Setup the Transmit Buffer Descriptor |
---|
| 787 | */ |
---|
| 788 | TxBd[minor]->status = M8260_BD_WRAP; |
---|
| 789 | |
---|
| 790 | /* |
---|
| 791 | * Set up SCCx general and protocol-specific mode registers |
---|
| 792 | */ |
---|
| 793 | sccregs->gsmr_h = 0x00000020; /* RFW=low latency operation */ |
---|
| 794 | sccregs->gsmr_l = 0x00028004; /* TDCR=RDCR=16x clock mode, MODE=uart*/ |
---|
| 795 | sccregs->scce = ~0; /* Clear any pending event */ |
---|
| 796 | sccregs->sccm = 0; /* Mask all interrupt/event sources */ |
---|
| 797 | sccregs->psmr = 0x3000; /* Normal operation & mode, 1 stop bit, |
---|
| 798 | 8 data bits, no parity */ |
---|
| 799 | sccregs->dsr = 0x7E7E; /* No fractional stop bits */ |
---|
| 800 | sccregs->gsmr_l = 0x00028034; /* ENT=enable Tx, ENR=enable Rx */ |
---|
| 801 | |
---|
| 802 | /* |
---|
| 803 | * Initialize the Rx and Tx with the new parameters. |
---|
| 804 | */ |
---|
| 805 | switch (minor) { |
---|
| 806 | case SCC1_MINOR: |
---|
| 807 | m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SCC1); |
---|
| 808 | break; |
---|
| 809 | case SCC2_MINOR: |
---|
| 810 | m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SCC2); |
---|
| 811 | break; |
---|
| 812 | case SCC3_MINOR: |
---|
| 813 | m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SCC3); |
---|
| 814 | break; |
---|
| 815 | case SCC4_MINOR: |
---|
| 816 | m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SCC4); |
---|
| 817 | break; |
---|
| 818 | } |
---|
| 819 | |
---|
| 820 | if ( (mbx8xx_console_get_configuration() & 0x06) == 0x02 ) { |
---|
| 821 | switch (minor) { |
---|
| 822 | case SCC1_MINOR: |
---|
| 823 | consoleIrqData.name = BSP_CPM_IRQ_SCC1; |
---|
| 824 | consoleIrqData.hdl = m8xx_scc1_interrupt_handler; |
---|
| 825 | break; |
---|
| 826 | case SCC2_MINOR: |
---|
| 827 | consoleIrqData.name = BSP_CPM_IRQ_SCC2; |
---|
| 828 | consoleIrqData.hdl = m8xx_scc2_interrupt_handler; |
---|
| 829 | break; |
---|
| 830 | case SCC3_MINOR: |
---|
| 831 | consoleIrqData.name = BSP_CPM_IRQ_SCC3; |
---|
| 832 | consoleIrqData.hdl = m8xx_scc3_interrupt_handler; |
---|
| 833 | break; |
---|
| 834 | case SCC4_MINOR: |
---|
| 835 | consoleIrqData.name = BSP_CPM_IRQ_SCC4; |
---|
| 836 | consoleIrqData.hdl = m8xx_scc4_interrupt_handler; |
---|
| 837 | break; |
---|
| 838 | |
---|
| 839 | } |
---|
| 840 | if (!BSP_install_rtems_irq_handler (&consoleIrqData)) { |
---|
| 841 | printk("Unable to connect SCC Irq handler\n"); |
---|
| 842 | rtems_fatal_error_occurred(1); |
---|
| 843 | } |
---|
| 844 | } |
---|
| 845 | } |
---|
| 846 | |
---|
| 847 | |
---|
| 848 | |
---|
| 849 | void m8xx_smc_enable(const rtems_irq_connect_data* ptr) |
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| 850 | { |
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| 851 | volatile m8260SMCRegisters_t *smcregs = 0; |
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| 852 | switch (ptr->name) { |
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| 853 | case BSP_CPM_IRQ_SMC1 : |
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| 854 | smcregs = &m8260.smc1; |
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| 855 | break; |
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| 856 | case BSP_CPM_IRQ_SMC2 : |
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| 857 | smcregs = &m8260.smc2; |
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| 858 | break; |
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| 859 | default: |
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| 860 | break; |
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| 861 | } |
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| 862 | smcregs->smcm = 3; |
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| 863 | } |
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| 864 | |
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| 865 | void m8xx_smc_disable(const rtems_irq_connect_data* ptr) |
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| 866 | { |
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| 867 | volatile m8260SMCRegisters_t *smcregs = 0; |
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| 868 | switch (ptr->name) { |
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| 869 | case BSP_CPM_IRQ_SMC1 : |
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| 870 | smcregs = &m8260.smc1; |
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| 871 | break; |
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| 872 | case BSP_CPM_IRQ_SMC2 : |
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| 873 | smcregs = &m8260.smc2; |
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| 874 | break; |
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| 875 | default: |
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| 876 | break; |
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| 877 | } |
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| 878 | smcregs->smcm &= (~3); |
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| 879 | } |
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| 880 | |
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| 881 | int m8xx_smc_isOn(const rtems_irq_connect_data* ptr) |
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| 882 | { |
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| 883 | return BSP_irq_enabled_at_cpm (ptr->name); |
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| 884 | } |
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| 885 | |
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| 886 | |
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| 887 | void |
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| 888 | m8xx_uart_smc_initialize (int minor) |
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| 889 | { |
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| 890 | unsigned char brg; |
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| 891 | volatile m8260SMCparms_t *smcparms = 0; |
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| 892 | volatile m8260SMCRegisters_t *smcregs = 0; |
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| 893 | |
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| 894 | /* |
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| 895 | * Check that minor number is valid |
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| 896 | */ |
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| 897 | if ( (minor < SMC1_MINOR) || (minor > SMC2_MINOR) ) |
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| 898 | return; |
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| 899 | |
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| 900 | /* Get the simode clock source bit values for 9600 bps */ |
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| 901 | if( minor == SMC1_MINOR ) |
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| 902 | brg = m8xx_get_brg(M8260_SMC1_BRGS, 9600*16); |
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| 903 | else |
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| 904 | brg = m8xx_get_brg(M8260_SMC2_BRGS, 9600*16); |
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| 905 | |
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| 906 | /* |
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| 907 | * Allocate buffer descriptors |
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| 908 | */ |
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| 909 | RxBd[minor] = m8xx_bd_allocate (1); |
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| 910 | TxBd[minor] = m8xx_bd_allocate (1); |
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| 911 | |
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| 912 | /* |
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| 913 | * Get the address of the parameter RAM for the specified port, |
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| 914 | * configure I/O port B and put SMC in NMSI mode, connect the |
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| 915 | * SMC to the appropriate BRG. |
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| 916 | * |
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| 917 | * SMC2 RxD is shared with port B bit 20 |
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| 918 | * SMC2 TxD is shared with port B bit 21 |
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| 919 | * SMC1 RxD is shared with port B bit 24 |
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| 920 | * SMC1 TxD is shared with port B bit 25 |
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| 921 | */ |
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| 922 | switch (minor) { |
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| 923 | case SMC1_MINOR: |
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| 924 | smcparms = &m8260.smc1p; |
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| 925 | smcregs = &m8260.smc1; |
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| 926 | |
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| 927 | #if 0 |
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| 928 | m8260.pbpar |= 0x000000C0; /* PB24 & PB25 are dedicated peripheral pins */ |
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| 929 | m8260.pbdir &= ~0x000000C0; /* PB24 & PB25 must not drive UART lines */ |
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| 930 | m8260.pbodr &= ~0x000000C0; /* PB24 & PB25 are not open drain */ |
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| 931 | |
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| 932 | m8260.simode &= 0xFFFF0FFF; /* Clear SMC1CS & SMC1 for NMSI mode */ |
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| 933 | m8260.simode |= brg << 12; /* SMC1CS = brg */ |
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| 934 | #endif |
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| 935 | break; |
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| 936 | |
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| 937 | case SMC2_MINOR: |
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| 938 | smcparms = &m8260.smc2p; |
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| 939 | smcregs = &m8260.smc2; |
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| 940 | #if 0 |
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| 941 | m8260.pbpar |= 0x00000C00; /* PB20 & PB21 are dedicated peripheral pins */ |
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| 942 | m8260.pbdir &= ~0x00000C00; /* PB20 & PB21 must not drive the UART lines */ |
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| 943 | m8260.pbodr &= ~0x00000C00; /* PB20 & PB21 are not open drain */ |
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| 944 | |
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| 945 | m8260.simode &= 0x0FFFFFFF; /* Clear SMC2CS & SMC2 for NMSI mode */ |
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| 946 | m8260.simode |= brg << 28; /* SMC2CS = brg */ |
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| 947 | #endif |
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| 948 | break; |
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| 949 | } |
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| 950 | |
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| 951 | /* |
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| 952 | * Set up SMC parameter RAM common to all protocols |
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| 953 | */ |
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| 954 | smcparms->rbase = (char *)RxBd[minor] - (char *)&m8260; |
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| 955 | smcparms->tbase = (char *)TxBd[minor] - (char *)&m8260; |
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| 956 | smcparms->rfcr = M8260_RFCR_MOT | M8260_RFCR_60X_BUS; |
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| 957 | smcparms->tfcr = M8260_TFCR_MOT | M8260_TFCR_60X_BUS; |
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| 958 | if ( (mbx8xx_console_get_configuration() & 0x06) == 0x02 ) |
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| 959 | smcparms->mrblr = RXBUFSIZE; /* Maximum Rx buffer size */ |
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| 960 | else |
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| 961 | smcparms->mrblr = 1; /* Maximum Rx buffer size */ |
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| 962 | |
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| 963 | /* |
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| 964 | * Set up SMC1 parameter RAM UART-specific parameters |
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| 965 | */ |
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| 966 | smcparms->un.uart.max_idl = 10; /* Set nb of idle chars to close buffer */ |
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| 967 | smcparms->un.uart.brkcr = 0; /* Set nb of breaks to send for STOP Tx */ |
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| 968 | smcparms->un.uart.brkec = 0; /* Clear break counter */ |
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| 969 | |
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| 970 | /* |
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| 971 | * Set up the Receive Buffer Descriptor |
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| 972 | */ |
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| 973 | RxBd[minor]->status = M8260_BD_EMPTY | M8260_BD_WRAP | M8260_BD_INTERRUPT; |
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| 974 | RxBd[minor]->length = 0; |
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| 975 | RxBd[minor]->buffer = rxBuf[minor]; |
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| 976 | |
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| 977 | /* |
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| 978 | * Setup the Transmit Buffer Descriptor |
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| 979 | */ |
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| 980 | TxBd[minor]->status = M8260_BD_WRAP; |
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| 981 | |
---|
| 982 | /* |
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| 983 | * Set up SMCx general and protocol-specific mode registers |
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| 984 | */ |
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| 985 | smcregs->smce = ~0; /* Clear any pending events */ |
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| 986 | smcregs->smcm = 0; /* Enable SMC Rx & Tx interrupts */ |
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| 987 | smcregs->smcmr = M8260_SMCMR_CLEN(9) | M8260_SMCMR_SM_UART; |
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| 988 | |
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| 989 | /* |
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| 990 | * Send "Init parameters" command |
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| 991 | */ |
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| 992 | switch (minor) { |
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| 993 | case SMC1_MINOR: |
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| 994 | m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SMC1); |
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| 995 | break; |
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| 996 | |
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| 997 | case SMC2_MINOR: |
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| 998 | m8xx_cp_execute_cmd (M8260_CR_OP_INIT_RX_TX | M8260_CR_SMC2); |
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| 999 | break; |
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| 1000 | } |
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| 1001 | |
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| 1002 | /* |
---|
| 1003 | * Enable receiver and transmitter |
---|
| 1004 | */ |
---|
| 1005 | smcregs->smcmr |= M8260_SMCMR_TEN | M8260_SMCMR_REN; |
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| 1006 | if ( (mbx8xx_console_get_configuration() & 0x06) == 0x02 ) { |
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| 1007 | consoleIrqData.on = m8xx_smc_enable; |
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| 1008 | consoleIrqData.off = m8xx_smc_disable; |
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| 1009 | consoleIrqData.isOn = m8xx_smc_isOn; |
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| 1010 | switch (minor) { |
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| 1011 | case SMC1_MINOR: |
---|
| 1012 | consoleIrqData.name = BSP_CPM_IRQ_SMC1; |
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| 1013 | consoleIrqData.hdl = m8xx_smc1_interrupt_handler; |
---|
| 1014 | break; |
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| 1015 | |
---|
| 1016 | case SMC2_MINOR: |
---|
| 1017 | consoleIrqData.name = BSP_CPM_IRQ_SMC2; |
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| 1018 | consoleIrqData.hdl = m8xx_smc2_interrupt_handler; |
---|
| 1019 | break; |
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| 1020 | #if 0 |
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| 1021 | case SMC1_MINOR: |
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| 1022 | rtems_interrupt_catch (m8xx_smc1_interrupt_handler, |
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| 1023 | PPC_IRQ_CPM_SMC1, |
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| 1024 | &old_handler[minor]); |
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| 1025 | |
---|
| 1026 | smcregs->smcm = 3; /* Enable SMC1 Rx & Tx interrupts */ |
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| 1027 | m8260.sipnr_l |= M8260_SIMASK_SMC1; /* Clear pending register */ |
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| 1028 | m8260.simr_l |= M8260_SIMASK_SMC1; /* Enable SMC1 interrupts */ |
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| 1029 | break; |
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| 1030 | |
---|
| 1031 | case SMC2_MINOR: |
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| 1032 | rtems_interrupt_catch (m8xx_smc2_interrupt_handler, |
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| 1033 | PPC_IRQ_CPM_SMC2, |
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| 1034 | &old_handler[minor]); |
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| 1035 | |
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| 1036 | smcregs->smcm = 3; /* Enable SMC2 Rx & Tx interrupts */ |
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| 1037 | m8260.sipnr_l |= M8260_SIMASK_SMC2; /* Clear pending register */ |
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| 1038 | m8260.simr_l |= M8260_SIMASK_SMC2; /* Enable SMC2 interrupts */ |
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| 1039 | break; |
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| 1040 | #endif |
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| 1041 | } |
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| 1042 | if (!BSP_install_rtems_irq_handler (&consoleIrqData)) { |
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| 1043 | printk("Unable to connect SMC Irq handler\n"); |
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| 1044 | rtems_fatal_error_occurred(1); |
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| 1045 | } |
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| 1046 | } |
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| 1047 | } |
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| 1048 | |
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| 1049 | void |
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| 1050 | m8xx_uart_initialize(void) |
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| 1051 | { |
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| 1052 | |
---|
| 1053 | } |
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| 1054 | |
---|
| 1055 | |
---|
| 1056 | void |
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| 1057 | m8xx_uart_interrupts_initialize(void) |
---|
| 1058 | { |
---|
| 1059 | #ifdef mpc8260 |
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| 1060 | /* CHECK THIS */ |
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| 1061 | |
---|
| 1062 | #else |
---|
| 1063 | |
---|
| 1064 | #if defined(mpc860) |
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| 1065 | m8xx.cicr = 0x00E43F80; /* SCaP=SCC1, SCbP=SCC2, SCcP=SCC3, |
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| 1066 | SCdP=SCC4, IRL=1, HP=PC15, IEN=1 */ |
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| 1067 | #else |
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| 1068 | m8xx.cicr = 0x00043F80; /* SCaP=SCC1, SCbP=SCC2, IRL=1, HP=PC15, IEN=1 */ |
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| 1069 | #endif |
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| 1070 | m8xx.simask |= M8xx_SIMASK_LVM1; /* Enable level interrupts */ |
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| 1071 | |
---|
| 1072 | #endif |
---|
| 1073 | } |
---|
| 1074 | |
---|
| 1075 | |
---|
| 1076 | int |
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| 1077 | m8xx_uart_pollRead( |
---|
| 1078 | int minor |
---|
| 1079 | ) |
---|
| 1080 | { |
---|
| 1081 | unsigned char c; |
---|
| 1082 | |
---|
| 1083 | if (RxBd[minor]->status & M8260_BD_EMPTY) { |
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| 1084 | return -1; |
---|
| 1085 | } |
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| 1086 | rtems_cache_invalidate_multiple_data_lines( |
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| 1087 | (const void *) RxBd[minor]->buffer, |
---|
| 1088 | RxBd[minor]->length |
---|
| 1089 | ); |
---|
| 1090 | c = ((char *)RxBd[minor]->buffer)[0]; |
---|
| 1091 | RxBd[minor]->status = M8260_BD_EMPTY | M8260_BD_WRAP; |
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| 1092 | return c; |
---|
| 1093 | } |
---|
| 1094 | |
---|
| 1095 | |
---|
| 1096 | /* |
---|
| 1097 | * TODO: Get a free buffer and set it up. |
---|
| 1098 | */ |
---|
| 1099 | int |
---|
| 1100 | m8xx_uart_write( |
---|
| 1101 | int minor, |
---|
| 1102 | const char *buf, |
---|
| 1103 | int len |
---|
| 1104 | ) |
---|
| 1105 | { |
---|
| 1106 | while( (TxBd[minor]->status) & M8260_BD_READY ); |
---|
| 1107 | |
---|
| 1108 | rtems_cache_flush_multiple_data_lines( buf, len ); |
---|
| 1109 | TxBd[minor]->buffer = (char *) buf; |
---|
| 1110 | TxBd[minor]->length = len; |
---|
| 1111 | TxBd[minor]->status = M8260_BD_READY | M8260_BD_WRAP | M8260_BD_INTERRUPT; |
---|
| 1112 | return 0; |
---|
| 1113 | } |
---|
| 1114 | |
---|
| 1115 | |
---|
| 1116 | int |
---|
| 1117 | m8xx_uart_pollWrite( |
---|
| 1118 | int minor, |
---|
| 1119 | const char *buf, |
---|
| 1120 | int len |
---|
| 1121 | ) |
---|
| 1122 | { |
---|
| 1123 | |
---|
| 1124 | while (len--) { |
---|
| 1125 | while (TxBd[minor]->status & M8260_BD_READY) |
---|
| 1126 | continue; |
---|
| 1127 | txBuf[minor] = *buf++; |
---|
| 1128 | rtems_cache_flush_multiple_data_lines( (void *)&txBuf[minor], 1 ); |
---|
| 1129 | TxBd[minor]->buffer = &txBuf[minor]; |
---|
| 1130 | TxBd[minor]->length = 1; |
---|
| 1131 | TxBd[minor]->status = M8260_BD_READY | M8260_BD_WRAP; |
---|
| 1132 | } |
---|
| 1133 | |
---|
| 1134 | return 0; |
---|
| 1135 | } |
---|
| 1136 | |
---|
| 1137 | void |
---|
| 1138 | m8xx_uart_reserve_resources( |
---|
| 1139 | rtems_configuration_table *configuration |
---|
| 1140 | ) |
---|
| 1141 | { |
---|
| 1142 | rtems_termios_reserve_resources (configuration, NUM_PORTS); |
---|
| 1143 | } |
---|