LXR linux/drivers/isdn/hardware/eicon/s

   1
   2/*
   3 *
   4  Copyright (c) Eicon Networks, 2002.
   5 *
   6  This source file is supplied for the use with
   7  Eicon Networks range of DIVA Server Adapters.
   8 *
   9  Eicon File Revision :    2.1
  10 *
  11  This program is free software; you can redistribute it and/or modify
  12  it under the terms of the GNU General Public License as published by
  13  the Free Software Foundation; either version 2, or (at your option)
  14  any later version.
  15 *
  16  This program is distributed in the hope that it will be useful,
  17  but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
  18  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19  See the GNU General Public License for more details.
  20 *
  21  You should have received a copy of the GNU General Public License
  22  along with this program; if not, write to the Free Software
  23  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 *
  25 */
  26#include "platform.h"
  27#include "di_defs.h"
  28#include "pc.h"
  29#include "pr_pc.h"
  30#include "di.h"
  31#include "mi_pc.h"
  32#include "pc_maint.h"
  33#include "divasync.h"
  34#include "io.h"
  35#include "helpers.h"
  36#include "dsrv_bri.h"
  37#include "dsp_defs.h"
  38/*****************************************************************************/
  39#define MAX_XLOG_SIZE (64 * 1024)
  40/* --------------------------------------------------------------------------
  41  Investigate card state, recovery trace buffer
  42  -------------------------------------------------------------------------- */
  43static void bri_cpu_trapped (PISDN_ADAPTER IoAdapter) {
  44 byte  __iomem *addrHi, *addrLo, *ioaddr ;
  45 word *Xlog ;
  46 dword   regs[4], i, size ;
  47 Xdesc   xlogDesc ;
  48 byte __iomem *Port;
  49/*
  50 * first read pointers and trap frame
  51 */
  52 if ( !(Xlog = (word *)diva_os_malloc (0, MAX_XLOG_SIZE)) )
  53  return ;
  54 Port = DIVA_OS_MEM_ATTACH_PORT(IoAdapter);
  55 addrHi =   Port + ((IoAdapter->Properties.Bus == BUS_PCI) ? M_PCI_ADDRH : ADDRH) ;
  56 addrLo = Port + ADDR ;
  57 ioaddr = Port + DATA ;
  58 outpp (addrHi,  0) ;
  59 outppw (addrLo, 0) ;
  60 for ( i = 0 ; i < 0x100 ; Xlog[i++] = inppw(ioaddr) ) ;
  61/*
  62 * check for trapped MIPS 3xxx CPU, dump only exception frame
  63 */
  64 if ( GET_DWORD(&Xlog[0x80 / sizeof(Xlog[0])]) == 0x99999999 )
  65 {
  66  dump_trap_frame (IoAdapter, &((byte *)Xlog)[0x90]) ;
  67  IoAdapter->trapped = 1 ;
  68 }
  69 regs[0] = GET_DWORD(&((byte *)Xlog)[0x70]);
  70 regs[1] = GET_DWORD(&((byte *)Xlog)[0x74]);
  71 regs[2] = GET_DWORD(&((byte *)Xlog)[0x78]);
  72 regs[3] = GET_DWORD(&((byte *)Xlog)[0x7c]);
  73 outpp (addrHi, (regs[1] >> 16) & 0x7F) ;
  74 outppw (addrLo, regs[1] & 0xFFFF) ;
  75 xlogDesc.cnt = inppw(ioaddr) ;
  76 outpp (addrHi, (regs[2] >> 16) & 0x7F) ;
  77 outppw (addrLo, regs[2] & 0xFFFF) ;
  78 xlogDesc.out = inppw(ioaddr) ;
  79 xlogDesc.buf = Xlog ;
  80 regs[0] &= IoAdapter->MemorySize - 1 ;
  81 if ( (regs[0] < IoAdapter->MemorySize - 1) )
  82 {
  83  size = IoAdapter->MemorySize - regs[0] ;
  84  if ( size > MAX_XLOG_SIZE )
  85   size = MAX_XLOG_SIZE ;
  86  for ( i = 0 ; i < (size / sizeof(*Xlog)) ; regs[0] += 2 )
  87  {
  88   outpp (addrHi, (regs[0] >> 16) & 0x7F) ;
  89   outppw (addrLo, regs[0] & 0xFFFF) ;
  90   Xlog[i++] = inppw(ioaddr) ;
  91  }
  92  dump_xlog_buffer (IoAdapter, &xlogDesc) ;
  93  diva_os_free (0, Xlog) ;
  94  IoAdapter->trapped = 2 ;
  95 }
  96 outpp  (addrHi, (byte)((BRI_UNCACHED_ADDR (IoAdapter->MemoryBase + IoAdapter->MemorySize -
  97                                            BRI_SHARED_RAM_SIZE)) >> 16)) ;
  98 outppw (addrLo, 0x00) ;
  99 DIVA_OS_MEM_DETACH_PORT(IoAdapter, Port);
 100}
 101/* ---------------------------------------------------------------------
 102   Reset hardware
 103  --------------------------------------------------------------------- */
 104static void reset_bri_hardware (PISDN_ADAPTER IoAdapter) {
 105 byte __iomem *p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter);
 106 outpp (p, 0x00) ;
 107 DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p);
 108}
 109/* ---------------------------------------------------------------------
 110   Halt system
 111  --------------------------------------------------------------------- */
 112static void stop_bri_hardware (PISDN_ADAPTER IoAdapter) {
 113 byte __iomem *p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter);
 114 if (p) {
 115  outpp (p, 0x00) ; /* disable interrupts ! */
 116 }
 117 DIVA_OS_MEM_DETACH_RESET(IoAdapter, p);
 118 p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter);
 119 outpp (p, 0x00) ;    /* clear int, halt cpu */
 120 DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p);
 121}
 122static int load_bri_hardware (PISDN_ADAPTER IoAdapter) {
 123 return (0);
 124}
 125/******************************************************************************/
 126static int bri_ISR (struct _ISDN_ADAPTER* IoAdapter) {
 127 byte __iomem *p;
 128
 129 p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter);
 130 if ( !(inpp (p) & 0x01) ) {
 131  DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p);
 132  return (0) ;
 133 }
 134 /*
 135  clear interrupt line
 136  */
 137 outpp (p, 0x08) ;
 138 DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p);
 139 IoAdapter->IrqCount++ ;
 140 if ( IoAdapter->Initialized ) {
 141  diva_os_schedule_soft_isr (&IoAdapter->isr_soft_isr);
 142 }
 143 return (1) ;
 144}
 145/* --------------------------------------------------------------------------
 146  Disable IRQ in the card hardware
 147  -------------------------------------------------------------------------- */
 148static void disable_bri_interrupt (PISDN_ADAPTER IoAdapter) {
 149 byte __iomem *p;
 150 p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter);
 151 if ( p )
 152 {
 153  outpp (p, 0x00) ; /* disable interrupts ! */
 154 }
 155 DIVA_OS_MEM_DETACH_RESET(IoAdapter, p);
 156 p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter);
 157 outpp (p, 0x00) ; /* clear int, halt cpu */
 158 DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p);
 159}
 160/* -------------------------------------------------------------------------
 161  Fill card entry points
 162  ------------------------------------------------------------------------- */
 163void prepare_maestra_functions (PISDN_ADAPTER IoAdapter) {
 164 ADAPTER *a = &IoAdapter->a ;
 165 a->ram_in             = io_in ;
 166 a->ram_inw            = io_inw ;
 167 a->ram_in_buffer      = io_in_buffer ;
 168 a->ram_look_ahead     = io_look_ahead ;
 169 a->ram_out            = io_out ;
 170 a->ram_outw           = io_outw ;
 171 a->ram_out_buffer     = io_out_buffer ;
 172 a->ram_inc            = io_inc ;
 173 IoAdapter->MemoryBase = BRI_MEMORY_BASE ;
 174 IoAdapter->MemorySize = BRI_MEMORY_SIZE ;
 175 IoAdapter->out        = pr_out ;
 176 IoAdapter->dpc        = pr_dpc ;
 177 IoAdapter->tst_irq    = scom_test_int ;
 178 IoAdapter->clr_irq    = scom_clear_int ;
 179 IoAdapter->pcm        = (struct pc_maint *)MIPS_MAINT_OFFS ;
 180 IoAdapter->load       = load_bri_hardware ;
 181 IoAdapter->disIrq     = disable_bri_interrupt ;
 182 IoAdapter->rstFnc     = reset_bri_hardware ;
 183 IoAdapter->stop       = stop_bri_hardware ;
 184 IoAdapter->trapFnc    = bri_cpu_trapped ;
 185 IoAdapter->diva_isr_handler = bri_ISR;
 186 /*
 187  Prepare OS dependent functions
 188  */
 189 diva_os_prepare_maestra_functions (IoAdapter);
 190}
 191/* -------------------------------------------------------------------------- */
 192