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dpavlin |
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* Copyright (C) 2004-2005 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_sfb.c,v 1.6 2005/02/18 07:22:30 debug Exp $ |
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* |
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* SFB TURBOchannel framebuffer. |
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* |
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* See include/sfbreg.h (and NetBSD's arch/pmax/dev/sfb.c) for more info. |
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* |
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* |
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* TODO: This is not really implemented yet. It "happens" to work with |
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* NetBSD and OpenBSD, but not with Ultrix yet. |
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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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#include "devices.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "sfbreg.h" |
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#define SFB_XSIZE 1280 |
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#define SFB_YSIZE 1024 |
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/* #define debug fatal */ |
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#define SFB_REG_SIZE 0x80 |
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#define N_SFB_REGS (SFB_REG_SIZE / 4) |
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struct sfb_data { |
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struct vfb_data *vfb_data; |
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uint32_t reg[N_SFB_REGS]; |
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}; |
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/* |
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* dev_sfb_access(): |
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*/ |
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int dev_sfb_access(struct cpu *cpu, struct memory *mem, uint64_t relative_addr, |
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unsigned char *data, size_t len, int writeflag, void *extra) |
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{ |
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uint64_t idata = 0, odata = 0; |
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struct sfb_data *d = extra; |
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idata = memory_readmax64(cpu, data, len); |
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if (writeflag==MEM_READ) { |
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odata = d->reg[(relative_addr >> 2) & (N_SFB_REGS - 1)]; |
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debug("[ sfb: read from addr 0x%x: 0x%llx ]\n", |
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(int)relative_addr, (long long)odata); |
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} else { |
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d->reg[(relative_addr >> 2) & (N_SFB_REGS - 1)] = idata; |
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debug("[ sfb: write to addr 0x%x: 0x%llx ]\n", |
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(int)relative_addr, (long long)idata); |
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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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return 1; |
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} |
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/* |
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* dev_sfb_init(): |
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*/ |
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void dev_sfb_init(struct machine *machine, struct memory *mem, |
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uint64_t baseaddr, struct vfb_data *fb) |
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{ |
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struct sfb_data *d; |
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d = malloc(sizeof(struct sfb_data)); |
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if (d == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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memset(d, 0, sizeof(struct sfb_data)); |
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d->vfb_data = fb; |
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d->reg[(SFB_VHORIZONTAL - SFB_ASIC_OFFSET) / 4] = SFB_XSIZE >> 2; |
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d->reg[(SFB_VVERTICAL - SFB_ASIC_OFFSET) / 4] = SFB_YSIZE; |
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memory_device_register(mem, "sfb", baseaddr, SFB_REG_SIZE, |
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dev_sfb_access, d, MEM_DEFAULT, NULL); |
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} |
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