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/* |
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* Copyright (C) 2007 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_vme.c,v 1.5 2007/06/20 15:46:54 debug Exp $ |
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* |
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* COMMENT: VME bus |
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* |
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* TODO |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "cpu.h" |
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#include "device.h" |
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#include "emul.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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|
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|
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#include "mvme88k_vme.h" |
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|
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|
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/* #define debug fatal */ |
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|
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|
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#define VME_LEN 0x1000 |
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|
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struct vme_data { |
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uint32_t reg[VME_LEN / sizeof(uint32_t)]; |
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}; |
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|
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|
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DEVICE_ACCESS(vme) |
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{ |
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struct vme_data *d = extra; |
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uint64_t idata = 0, odata = 0; |
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|
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if (writeflag == MEM_WRITE) |
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idata = memory_readmax64(cpu, data, len); |
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|
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if (writeflag == MEM_READ) |
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odata = d->reg[relative_addr / sizeof(uint32_t)]; |
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|
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switch (relative_addr) { |
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|
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case 0: /* Used by OpenBSD/mvme88k when probing... */ |
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break; |
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|
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case VME2_T1CMP: |
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if (writeflag == MEM_WRITE) |
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d->reg[relative_addr / sizeof(uint32_t)] = idata; |
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break; |
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|
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case VME2_T1COUNT: |
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if (writeflag == MEM_WRITE) |
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d->reg[relative_addr / sizeof(uint32_t)] = idata; |
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else { |
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/* NOTE! This is a quick hack. TODO: Fix! */ |
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d->reg[relative_addr / sizeof(uint32_t)] += 100; |
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} |
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break; |
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|
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case VME2_TCTL: |
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if (writeflag == MEM_WRITE) |
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d->reg[relative_addr / sizeof(uint32_t)] = idata; |
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/* TODO */ |
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break; |
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|
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default:if (writeflag == MEM_READ) |
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debug("[ vme: unimplemented READ from offset 0x%x ]" |
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"\n", (int)relative_addr); |
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else |
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debug("[ vme: unimplemented WRITE to offset 0x%x: " |
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"0x%x ]\n", (int)relative_addr, (int)idata); |
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/* exit(1); */ |
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} |
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|
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if (writeflag == MEM_READ) |
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memory_writemax64(cpu, data, len, odata); |
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|
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return 1; |
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} |
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|
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|
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DEVINIT(vme) |
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{ |
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struct vme_data *d; |
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|
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CHECK_ALLOCATION(d = malloc(sizeof(struct vme_data))); |
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memset(d, 0, sizeof(struct vme_data)); |
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|
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memory_device_register(devinit->machine->memory, devinit->name, |
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devinit->addr, VME_LEN, dev_vme_access, (void *)d, |
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DM_DEFAULT, NULL); |
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|
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return 1; |
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} |
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|