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linux/drivers/isdn/hardware/eicon/s_pri.c

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/*
*
Copyright (c) Eicon Networks, 2002.
*
This source file is supplied for the use with
Eicon Networks range of DIVA Server Adapters.
*
Eicon File Revision : 2.1
*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
*
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
*
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "platform.h"
#include "di_defs.h"
#include "pc.h"
#include "pr_pc.h"
#include "di.h"
#include "mi_pc.h"
#include "pc_maint.h"
#include "divasync.h"
#include "io.h"
#include "helpers.h"
#include "dsrv_pri.h"
#include "dsp_defs.h"
/*****************************************************************************/
#define MAX_XLOG_SIZE (64 * 1024)
/* -------------------------------------------------------------------------
Does return offset between ADAPTER->ram and real begin of memory
------------------------------------------------------------------------- */
static dword pri_ram_offset(ADAPTER *a) {
return ((dword)MP_SHARED_RAM_OFFSET);
}
/* -------------------------------------------------------------------------
Recovery XLOG buffer from the card
------------------------------------------------------------------------- */
static void pri_cpu_trapped(PISDN_ADAPTER IoAdapter) {
byte __iomem *base;
word *Xlog;
dword regs[4], TrapID, size;
Xdesc xlogDesc;
/*
* check for trapped MIPS 46xx CPU, dump exception frame
*/
base = DIVA_OS_MEM_ATTACH_ADDRESS(IoAdapter);
TrapID = READ_DWORD(&base[0x80]);
if ((TrapID == 0x99999999) || (TrapID == 0x99999901))
{
dump_trap_frame(IoAdapter, &base[0x90]);
IoAdapter->trapped = 1;
}
regs[0] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x70]);
regs[1] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x74]);
regs[2] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x78]);
regs[3] = READ_DWORD(&base[MP_PROTOCOL_OFFSET + 0x7c]);
regs[0] &= IoAdapter->MemorySize - 1;
if ((regs[0] < IoAdapter->MemorySize - 1))
{
if (!(Xlog = (word *)diva_os_malloc(0, MAX_XLOG_SIZE))) {
DIVA_OS_MEM_DETACH_ADDRESS(IoAdapter, base);
return;
}
size = IoAdapter->MemorySize - regs[0];
if (size > MAX_XLOG_SIZE)
size = MAX_XLOG_SIZE;
memcpy_fromio(Xlog, &base[regs[0]], size);
xlogDesc.buf = Xlog;
xlogDesc.cnt = READ_WORD(&base[regs[1] & (IoAdapter->MemorySize - 1)]);
xlogDesc.out = READ_WORD(&base[regs[2] & (IoAdapter->MemorySize - 1)]);
dump_xlog_buffer(IoAdapter, &xlogDesc);
diva_os_free(0, Xlog);
IoAdapter->trapped = 2;
}
DIVA_OS_MEM_DETACH_ADDRESS(IoAdapter, base);
}
/* -------------------------------------------------------------------------
Hardware reset of PRI card
------------------------------------------------------------------------- */
static void reset_pri_hardware(PISDN_ADAPTER IoAdapter) {
byte __iomem *p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter);
WRITE_BYTE(p, _MP_RISC_RESET | _MP_LED1 | _MP_LED2);
diva_os_wait(50);
WRITE_BYTE(p, 0x00);
diva_os_wait(50);
DIVA_OS_MEM_DETACH_RESET(IoAdapter, p);
}
/* -------------------------------------------------------------------------
Stop Card Hardware
------------------------------------------------------------------------- */
static void stop_pri_hardware(PISDN_ADAPTER IoAdapter) {
dword i;
byte __iomem *p;
dword volatile __iomem *cfgReg = (void __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
WRITE_DWORD(&cfgReg[3], 0);
WRITE_DWORD(&cfgReg[1], 0);
DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg);
IoAdapter->a.ram_out(&IoAdapter->a, &RAM->SWReg, SWREG_HALT_CPU);
i = 0;
while ((i < 100) && (IoAdapter->a.ram_in(&IoAdapter->a, &RAM->SWReg) != 0))
{
diva_os_wait(1);
i++;
}
DBG_TRC(("%s: PRI stopped (%d)", IoAdapter->Name, i))
cfgReg = (void __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
WRITE_DWORD(&cfgReg[0], ((dword)(~0x03E00000)));
DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg);
diva_os_wait(1);
p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter);
WRITE_BYTE(p, _MP_RISC_RESET | _MP_LED1 | _MP_LED2);
DIVA_OS_MEM_DETACH_RESET(IoAdapter, p);
}
static int load_pri_hardware(PISDN_ADAPTER IoAdapter) {
return (0);
}
/* --------------------------------------------------------------------------
PRI Adapter interrupt Service Routine
-------------------------------------------------------------------------- */
static int pri_ISR(struct _ISDN_ADAPTER *IoAdapter) {
byte __iomem *cfg = DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
if (!(READ_DWORD(cfg) & 0x80000000)) {
DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfg);
return (0);
}
/*
clear interrupt line
*/
WRITE_DWORD(cfg, (dword)~0x03E00000);
DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfg);
IoAdapter->IrqCount++;
if (IoAdapter->Initialized)
{
diva_os_schedule_soft_isr(&IoAdapter->isr_soft_isr);
}
return (1);
}
/* -------------------------------------------------------------------------
Disable interrupt in the card hardware
------------------------------------------------------------------------- */
static void disable_pri_interrupt(PISDN_ADAPTER IoAdapter) {
dword volatile __iomem *cfgReg = (dword volatile __iomem *)DIVA_OS_MEM_ATTACH_CFG(IoAdapter);
WRITE_DWORD(&cfgReg[3], 0);
WRITE_DWORD(&cfgReg[1], 0);
WRITE_DWORD(&cfgReg[0], (dword)(~0x03E00000));
DIVA_OS_MEM_DETACH_CFG(IoAdapter, cfgReg);
}
/* -------------------------------------------------------------------------
Install entry points for PRI Adapter
------------------------------------------------------------------------- */
static void prepare_common_pri_functions(PISDN_ADAPTER IoAdapter) {
ADAPTER *a = &IoAdapter->a;
a->ram_in = mem_in;
a->ram_inw = mem_inw;
a->ram_in_buffer = mem_in_buffer;
a->ram_look_ahead = mem_look_ahead;
a->ram_out = mem_out;
a->ram_outw = mem_outw;
a->ram_out_buffer = mem_out_buffer;
a->ram_inc = mem_inc;
a->ram_offset = pri_ram_offset;
a->ram_out_dw = mem_out_dw;
a->ram_in_dw = mem_in_dw;
a->istream_wakeup = pr_stream;
IoAdapter->out = pr_out;
IoAdapter->dpc = pr_dpc;
IoAdapter->tst_irq = scom_test_int;
IoAdapter->clr_irq = scom_clear_int;
IoAdapter->pcm = (struct pc_maint *)(MIPS_MAINT_OFFS
- MP_SHARED_RAM_OFFSET);
IoAdapter->load = load_pri_hardware;
IoAdapter->disIrq = disable_pri_interrupt;
IoAdapter->rstFnc = reset_pri_hardware;
IoAdapter->stop = stop_pri_hardware;
IoAdapter->trapFnc = pri_cpu_trapped;
IoAdapter->diva_isr_handler = pri_ISR;
}
/* -------------------------------------------------------------------------
Install entry points for PRI Adapter
------------------------------------------------------------------------- */
void prepare_pri_functions(PISDN_ADAPTER IoAdapter) {
IoAdapter->MemorySize = MP_MEMORY_SIZE;
prepare_common_pri_functions(IoAdapter);
diva_os_prepare_pri_functions(IoAdapter);
}
/* -------------------------------------------------------------------------
Install entry points for PRI Rev.2 Adapter
------------------------------------------------------------------------- */
void prepare_pri2_functions(PISDN_ADAPTER IoAdapter) {
IoAdapter->MemorySize = MP2_MEMORY_SIZE;
prepare_common_pri_functions(IoAdapter);
diva_os_prepare_pri2_functions(IoAdapter);
}
/* ------------------------------------------------------------------------- */
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