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Diffstat (limited to '')
| -rw-r--r-- | drivers/isdn/hardware/eicon/s_bri.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/eicon/s_bri.c b/drivers/isdn/hardware/eicon/s_bri.c new file mode 100644 index 000000000..6a5bb7462 --- /dev/null +++ b/drivers/isdn/hardware/eicon/s_bri.c @@ -0,0 +1,191 @@ + +/* + * + 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_bri.h" +#include "dsp_defs.h" +/*****************************************************************************/ +#define MAX_XLOG_SIZE (64 * 1024) +/* -------------------------------------------------------------------------- + Investigate card state, recovery trace buffer + -------------------------------------------------------------------------- */ +static void bri_cpu_trapped(PISDN_ADAPTER IoAdapter) { + byte __iomem *addrHi, *addrLo, *ioaddr; + word *Xlog; + dword regs[4], i, size; + Xdesc xlogDesc; + byte __iomem *Port; +/* + * first read pointers and trap frame + */ + if (!(Xlog = (word *)diva_os_malloc(0, MAX_XLOG_SIZE))) + return; + Port = DIVA_OS_MEM_ATTACH_PORT(IoAdapter); + addrHi = Port + ((IoAdapter->Properties.Bus == BUS_PCI) ? M_PCI_ADDRH : ADDRH); + addrLo = Port + ADDR; + ioaddr = Port + DATA; + outpp(addrHi, 0); + outppw(addrLo, 0); + for (i = 0; i < 0x100; Xlog[i++] = inppw(ioaddr)); +/* + * check for trapped MIPS 3xxx CPU, dump only exception frame + */ + if (GET_DWORD(&Xlog[0x80 / sizeof(Xlog[0])]) == 0x99999999) + { + dump_trap_frame(IoAdapter, &((byte *)Xlog)[0x90]); + IoAdapter->trapped = 1; + } + regs[0] = GET_DWORD(&((byte *)Xlog)[0x70]); + regs[1] = GET_DWORD(&((byte *)Xlog)[0x74]); + regs[2] = GET_DWORD(&((byte *)Xlog)[0x78]); + regs[3] = GET_DWORD(&((byte *)Xlog)[0x7c]); + outpp(addrHi, (regs[1] >> 16) & 0x7F); + outppw(addrLo, regs[1] & 0xFFFF); + xlogDesc.cnt = inppw(ioaddr); + outpp(addrHi, (regs[2] >> 16) & 0x7F); + outppw(addrLo, regs[2] & 0xFFFF); + xlogDesc.out = inppw(ioaddr); + xlogDesc.buf = Xlog; + regs[0] &= IoAdapter->MemorySize - 1; + if ((regs[0] < IoAdapter->MemorySize - 1)) + { + size = IoAdapter->MemorySize - regs[0]; + if (size > MAX_XLOG_SIZE) + size = MAX_XLOG_SIZE; + for (i = 0; i < (size / sizeof(*Xlog)); regs[0] += 2) + { + outpp(addrHi, (regs[0] >> 16) & 0x7F); + outppw(addrLo, regs[0] & 0xFFFF); + Xlog[i++] = inppw(ioaddr); + } + dump_xlog_buffer(IoAdapter, &xlogDesc); + diva_os_free(0, Xlog); + IoAdapter->trapped = 2; + } + outpp(addrHi, (byte)((BRI_UNCACHED_ADDR(IoAdapter->MemoryBase + IoAdapter->MemorySize - + BRI_SHARED_RAM_SIZE)) >> 16)); + outppw(addrLo, 0x00); + DIVA_OS_MEM_DETACH_PORT(IoAdapter, Port); +} +/* --------------------------------------------------------------------- + Reset hardware + --------------------------------------------------------------------- */ +static void reset_bri_hardware(PISDN_ADAPTER IoAdapter) { + byte __iomem *p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter); + outpp(p, 0x00); + DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p); +} +/* --------------------------------------------------------------------- + Halt system + --------------------------------------------------------------------- */ +static void stop_bri_hardware(PISDN_ADAPTER IoAdapter) { + byte __iomem *p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter); + if (p) { + outpp(p, 0x00); /* disable interrupts ! */ + } + DIVA_OS_MEM_DETACH_RESET(IoAdapter, p); + p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter); + outpp(p, 0x00); /* clear int, halt cpu */ + DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p); +} +static int load_bri_hardware(PISDN_ADAPTER IoAdapter) { + return (0); +} +/******************************************************************************/ +static int bri_ISR(struct _ISDN_ADAPTER *IoAdapter) { + byte __iomem *p; + + p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter); + if (!(inpp(p) & 0x01)) { + DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p); + return (0); + } + /* + clear interrupt line + */ + outpp(p, 0x08); + DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p); + IoAdapter->IrqCount++; + if (IoAdapter->Initialized) { + diva_os_schedule_soft_isr(&IoAdapter->isr_soft_isr); + } + return (1); +} +/* -------------------------------------------------------------------------- + Disable IRQ in the card hardware + -------------------------------------------------------------------------- */ +static void disable_bri_interrupt(PISDN_ADAPTER IoAdapter) { + byte __iomem *p; + p = DIVA_OS_MEM_ATTACH_RESET(IoAdapter); + if (p) + { + outpp(p, 0x00); /* disable interrupts ! */ + } + DIVA_OS_MEM_DETACH_RESET(IoAdapter, p); + p = DIVA_OS_MEM_ATTACH_CTLREG(IoAdapter); + outpp(p, 0x00); /* clear int, halt cpu */ + DIVA_OS_MEM_DETACH_CTLREG(IoAdapter, p); +} +/* ------------------------------------------------------------------------- + Fill card entry points + ------------------------------------------------------------------------- */ +void prepare_maestra_functions(PISDN_ADAPTER IoAdapter) { + ADAPTER *a = &IoAdapter->a; + a->ram_in = io_in; + a->ram_inw = io_inw; + a->ram_in_buffer = io_in_buffer; + a->ram_look_ahead = io_look_ahead; + a->ram_out = io_out; + a->ram_outw = io_outw; + a->ram_out_buffer = io_out_buffer; + a->ram_inc = io_inc; + IoAdapter->MemoryBase = BRI_MEMORY_BASE; + IoAdapter->MemorySize = BRI_MEMORY_SIZE; + 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; + IoAdapter->load = load_bri_hardware; + IoAdapter->disIrq = disable_bri_interrupt; + IoAdapter->rstFnc = reset_bri_hardware; + IoAdapter->stop = stop_bri_hardware; + IoAdapter->trapFnc = bri_cpu_trapped; + IoAdapter->diva_isr_handler = bri_ISR; + /* + Prepare OS dependent functions + */ + diva_os_prepare_maestra_functions(IoAdapter); +} +/* -------------------------------------------------------------------------- */ |