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_pri.h"
  37#include "dsp_defs.h"
  38/*****************************************************************************/
  39#define MAX_XLOG_SIZE  (64 * 1024)
  40/* -------------------------------------------------------------------------
  41  Does return offset between ADAPTER->ram and real begin of memory
  42  ------------------------------------------------------------------------- */
  43static dword pri_ram_offset (ADAPTER* a) {
  44 return ((dword)MP_SHARED_RAM_OFFSET);
  45}
  46/* -------------------------------------------------------------------------
  47  Recovery XLOG buffer from the card
  48  ------------------------------------------------------------------------- */
  49static void pri_cpu_trapped (PISDN_ADAPTER IoAdapter) {
  50 byte  __iomem *base ;
  51 word *Xlog ;
  52 dword   regs[4], TrapID, size ;
  53 Xdesc   xlogDesc ;
  54/*
  55 * check for trapped MIPS 46xx CPU, dump exception frame
  56 */
  57 base   = DIVA_OS_MEM_ATTACH_ADDRESS(IoAdapter);
  58 TrapID = READ_DWORD(&base[0x80]) ;
  59 if ( (TrapID == 0x99999999) || (TrapID == 0x99999901) )
  60 {
  61  dump_trap_frame (IoAdapter, &base[0x90]) ;
  62  IoAdapter->trapped = 1 ;
  63 }
  64 regs[0] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x70]);
  65 regs[1] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x74]);
  66 regs[2] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x78]);
  67 regs[3] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x7c]);
  68 regs[0] &= IoAdapter->MemorySize - 1 ;
  69 if ( (regs[0] < IoAdapter->MemorySize - 1) )
  70 {
  71  if ( !(Xlog = (word *)diva_os_malloc (0, MAX_XLOG_SIZE)) ) {
  72   DIVA_OS_MEM_DETACH_ADDRESS(IoAdapter, base);
  73   return ;
  74  }
  75  size = IoAdapter->MemorySize - regs[0] ;
  76  if ( size > MAX_XLOG_SIZE )
  77   size = MAX_XLOG_SIZE ;
  78  memcpy_fromio(Xlog, &base[regs[0]], size) ;
  79  xlogDesc.buf = Xlog ;
  80  xlogDesc.cnt = READ_WORD(&base[regs[1] & (IoAdapter->MemorySize - 1)]) ;
  81  xlogDesc.out = READ_WORD(&base[regs[2] & (IoAdapter->MemorySize - 1)]) ;
  82  dump_xlog_buffer (IoAdapter, &xlogDesc) ;
  83  diva_os_free (0, Xlog) ;
  84  IoAdapter->trapped = 2 ;
  85 }
  86 DIVA_OS_MEM_DETACH_ADDRESS(IoAdapter, base);
  87}
  88/* -------------------------------------------------------------------------
  89  Hardware reset of PRI card
  90  ------------------------------------------------------------------------- */
  91static void reset_pri_hardware (PISDN_ADAPTER IoAdapter) {
  92 byte __iomem *p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter);
  93 WRITE_BYTE(p, _MP_RISC_RESET | _MP_LED1 | _MP_LED2);
  94 diva_os_wait (50) ;
  95 WRITE_BYTE(p, 0x00);
  96 diva_os_wait (50) ;
  97 DIVA_OS_MEM_DETACH_RESET(IoAdapter, p);
  98}
  99/* -------------------------------------------------------------------------
 100  Stop Card Hardware
 101  ------------------------------------------------------------------------- */
 102static void stop_pri_hardware (PISDN_ADAPTER IoAdapter) {
 103 dword i;
 104 byte __iomem *p;
 105 dword volatile __iomem *cfgReg = (void __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
 106 WRITE_DWORD(&cfgReg[3], 0);
 107 WRITE_DWORD(&cfgReg[1], 0);
 108 DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg);
 109 IoAdapter->a.ram_out (&IoAdapter->a, &RAM->SWReg, SWREG_HALT_CPU) ;
 110 i = 0 ;
 111 while ( (i < 100) && (IoAdapter->a.ram_in (&IoAdapter->a, &RAM->SWReg) != 0) )
 112 {
 113  diva_os_wait (1) ;
 114  i++ ;
 115 }
 116 DBG_TRC(("%s: PRI stopped (%d)", IoAdapter->Name, i))
 117 cfgReg = (void __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
 118 WRITE_DWORD(&cfgReg[0],((dword)(~0x03E00000)));
 119 DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg);
 120 diva_os_wait (1) ;
 121 p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter);
 122 WRITE_BYTE(p, _MP_RISC_RESET | _MP_LED1 | _MP_LED2);
 123 DIVA_OS_MEM_DETACH_RESET(IoAdapter, p);
 124}
 125static int load_pri_hardware (PISDN_ADAPTER IoAdapter) {
 126 return (0);
 127}
 128/* --------------------------------------------------------------------------
 129  PRI Adapter interrupt Service Routine
 130   -------------------------------------------------------------------------- */
 131static int pri_ISR (struct _ISDN_ADAPTER* IoAdapter) {
 132 byte __iomem *cfg = DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
 133 if ( !(READ_DWORD(cfg) & 0x80000000) ) {
 134  DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfg);
 135  return (0) ;
 136 }
 137 /*
 138  clear interrupt line
 139  */
 140 WRITE_DWORD(cfg, (dword)~0x03E00000) ;
 141 DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfg);
 142 IoAdapter->IrqCount++ ;
 143 if ( IoAdapter->Initialized )
 144 {
 145  diva_os_schedule_soft_isr (&IoAdapter->isr_soft_isr);
 146 }
 147 return (1) ;
 148}
 149/* -------------------------------------------------------------------------
 150  Disable interrupt in the card hardware
 151  ------------------------------------------------------------------------- */
 152static void disable_pri_interrupt (PISDN_ADAPTER IoAdapter) {
 153 dword volatile __iomem *cfgReg = (dword volatile __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter) ;
 154 WRITE_DWORD(&cfgReg[3], 0);
 155 WRITE_DWORD(&cfgReg[1], 0);
 156 WRITE_DWORD(&cfgReg[0], (dword)(~0x03E00000)) ;
 157 DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg);
 158}
 159/* -------------------------------------------------------------------------
 160  Install entry points for PRI Adapter
 161  ------------------------------------------------------------------------- */
 162static void prepare_common_pri_functions (PISDN_ADAPTER IoAdapter) {
 163 ADAPTER *a = &IoAdapter->a ;
 164 a->ram_in           = mem_in ;
 165 a->ram_inw          = mem_inw ;
 166 a->ram_in_buffer    = mem_in_buffer ;
 167 a->ram_look_ahead   = mem_look_ahead ;
 168 a->ram_out          = mem_out ;
 169 a->ram_outw         = mem_outw ;
 170 a->ram_out_buffer   = mem_out_buffer ;
 171 a->ram_inc          = mem_inc ;
 172 a->ram_offset       = pri_ram_offset ;
 173 a->ram_out_dw    = mem_out_dw;
 174 a->ram_in_dw    = mem_in_dw;
 175  a->istream_wakeup   = pr_stream;
 176 IoAdapter->out      = pr_out ;
 177 IoAdapter->dpc      = pr_dpc ;
 178 IoAdapter->tst_irq  = scom_test_int ;
 179 IoAdapter->clr_irq  = scom_clear_int ;
 180 IoAdapter->pcm      = (struct pc_maint *)(MIPS_MAINT_OFFS
 181                                        - MP_SHARED_RAM_OFFSET) ;
 182 IoAdapter->load     = load_pri_hardware ;
 183 IoAdapter->disIrq   = disable_pri_interrupt ;
 184 IoAdapter->rstFnc   = reset_pri_hardware ;
 185 IoAdapter->stop     = stop_pri_hardware ;
 186 IoAdapter->trapFnc  = pri_cpu_trapped ;
 187 IoAdapter->diva_isr_handler = pri_ISR;
 188}
 189/* -------------------------------------------------------------------------
 190  Install entry points for PRI Adapter
 191  ------------------------------------------------------------------------- */
 192void prepare_pri_functions (PISDN_ADAPTER IoAdapter) {
 193 IoAdapter->MemorySize = MP_MEMORY_SIZE ;
 194 prepare_common_pri_functions (IoAdapter) ;
 195 diva_os_prepare_pri_functions (IoAdapter);
 196}
 197/* -------------------------------------------------------------------------
 198  Install entry points for PRI Rev.2 Adapter
 199  ------------------------------------------------------------------------- */
 200void prepare_pri2_functions (PISDN_ADAPTER IoAdapter) {
 201 IoAdapter->MemorySize = MP2_MEMORY_SIZE ;
 202 prepare_common_pri_functions (IoAdapter) ;
 203 diva_os_prepare_pri2_functions (IoAdapter);
 204}
 205/* ------------------------------------------------------------------------- */
 206