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/* |
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* Copyright (C) 2003-2005 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_sgi_mardigras.c,v 1.17 2005/02/26 11:56:42 debug Exp $ |
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* |
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* "MardiGras" graphics controller on SGI IP30 (Octane). |
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* |
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* Most of this is just guesses based on the behaviour of Linux/Octane. |
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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 "devices.h" |
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#include "memory.h" |
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#include "machine.h" |
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#include "misc.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 DEV_SGI_MARDIGRAS_LENGTH 0x800000 |
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|
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#define MARDIGRAS_FAKE_OFFSET 0x500000000ULL /* hopefully available */ |
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#define MARDIGRAS_DEFAULT_XSIZE 1280 |
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#define MARDIGRAS_DEFAULT_YSIZE 1024 |
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|
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#define MICROCODE_START 0x50000 |
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#define MICROCODE_END 0x55000 |
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|
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static int mardigras_xsize = MARDIGRAS_DEFAULT_XSIZE; |
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static int mardigras_ysize = MARDIGRAS_DEFAULT_YSIZE; |
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|
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struct sgi_mardigras_data { |
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struct vfb_data *fb; |
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unsigned char microcode_ram[MICROCODE_END - MICROCODE_START]; |
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uint64_t palette_reg_select; |
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int currentx; |
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int currenty; |
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int color; |
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int startx; |
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int starty; |
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int stopx; |
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int stopy; |
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uint64_t draw_mode; |
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}; |
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|
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|
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/* |
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* mardigras_20400(): |
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*/ |
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void mardigras_20400(struct cpu *cpu, struct sgi_mardigras_data *d, |
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uint64_t idata) |
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{ |
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int i, x, y, r,g,b, len, addr; |
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unsigned char pixels[3 * 8000]; |
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|
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/* Get rgb from palette: */ |
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r = d->fb->rgb_palette[d->color * 3 + 0]; |
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g = d->fb->rgb_palette[d->color * 3 + 1]; |
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b = d->fb->rgb_palette[d->color * 3 + 2]; |
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|
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/* Set color: */ |
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if ((idata & 0x00ffffff00000000ULL) == 0x00185C0400000000ULL) { |
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int color = (idata >> 12) & 0xff; |
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d->color = color; |
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return; |
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} |
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|
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/* Set start XY: */ |
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if ((idata & 0x00ffffff00000000ULL) == 0x0018460400000000ULL) { |
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d->startx = (idata >> 16) & 0xffff; |
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d->starty = idata & 0xffff; |
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if (d->startx >= mardigras_xsize) |
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d->startx = 0; |
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if (d->starty >= mardigras_ysize) |
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d->starty = 0; |
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d->currentx = d->startx; |
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d->currenty = d->starty; |
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return; |
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} |
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|
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/* Set stop XY: */ |
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if ((idata & 0x00ffffff00000000ULL) == 0x0018470400000000ULL) { |
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d->stopx = (idata >> 16) & 0xffff; |
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d->stopy = idata & 0xffff; |
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if (d->stopx >= mardigras_xsize) |
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d->stopx = 0; |
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if (d->stopy >= mardigras_ysize) |
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d->stopy = 0; |
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return; |
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} |
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|
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/* Draw modes: (Rectangle or Bitmap, respectively) */ |
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if (idata == 0x0019100400018000ULL || |
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idata == 0x0019100400418008ULL) { |
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d->draw_mode = idata; |
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return; |
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} |
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|
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/* Send command: */ |
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if (idata == 0x001C130400000018ULL) { |
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switch (d->draw_mode) { |
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/* Rectangle: */ |
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case 0x0019100400018000ULL: |
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/* Fill pixels[] with pixels: */ |
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len = 0; |
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for (x=d->startx; x<=d->stopx; x++) { |
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pixels[len + 0] = r; |
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pixels[len + 1] = g; |
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pixels[len + 2] = b; |
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len += 3; |
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} |
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if (len == 0) |
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break; |
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for (y=d->starty; y<=d->stopy; y++) { |
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addr = (mardigras_xsize * (mardigras_ysize - |
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1 - y) + d->startx) * 3; |
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/* printf("addr = %i\n", addr); */ |
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|
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/* Write a line: */ |
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dev_fb_access(cpu, cpu->mem, |
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addr, pixels, len, MEM_WRITE, d->fb); |
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} |
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break; |
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/* Bitmap: */ |
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case 0x0019100400418008ULL: |
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break; |
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default: |
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fatal("[ sgi_mardigras: unknown draw mode ]\n"); |
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} |
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return; |
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} |
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|
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/* Send a line of bitmap data: */ |
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if ((idata & 0x00ffffff00000000ULL) == 0x001C700400000000ULL) { |
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addr = (mardigras_xsize * (mardigras_ysize - 1 - d->currenty) |
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+ d->currentx) * 3; |
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/* |
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printf("addr=%08x curx,y=%4i,%4i startx,y=%4i,%4i " |
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"stopx,y=%4i,%4i\n", addr, d->currentx, d->currenty, |
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d->startx, d->starty, d->stopx, d->stopy); |
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*/ |
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len = 8*3; |
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|
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if (addr > mardigras_xsize * mardigras_ysize * 3 || addr < 0) |
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return; |
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|
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/* Read a line: */ |
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dev_fb_access(cpu, cpu->mem, |
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addr, pixels, len, MEM_READ, d->fb); |
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|
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i = 0; |
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while (i < 8) { |
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if ((idata >> (24 + (7-i))) & 1) { |
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pixels[i*3 + 0] = r; |
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pixels[i*3 + 1] = g; |
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pixels[i*3 + 2] = b; |
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} |
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i ++; |
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|
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d->currentx ++; |
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if (d->currentx > d->stopx) { |
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d->currentx = d->startx; |
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d->currenty ++; |
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if (d->currenty > d->stopy) |
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d->currenty = d->starty; |
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} |
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} |
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|
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/* Write a line: */ |
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dev_fb_access(cpu, cpu->mem, |
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addr, pixels, len, MEM_WRITE, d->fb); |
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|
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return; |
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} |
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|
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debug("mardigras_20400(): 0x%016llx\n", (long long)idata); |
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} |
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|
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|
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/* |
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* dev_sgi_mardigras_access(): |
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*/ |
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int dev_sgi_mardigras_access(struct cpu *cpu, struct memory *mem, |
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uint64_t relative_addr, unsigned char *data, size_t len, |
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int writeflag, void *extra) |
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{ |
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uint64_t idata = 0, odata = 0; |
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struct sgi_mardigras_data *d = extra; |
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int i; |
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|
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idata = memory_readmax64(cpu, data, len); |
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|
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/* Accessing the microcode_ram works like ordinary ram: */ |
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if (relative_addr >= MICROCODE_START && |
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relative_addr < MICROCODE_END) { |
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relative_addr -= MICROCODE_START; |
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if (writeflag == MEM_WRITE) |
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memcpy(d->microcode_ram + relative_addr, data, len); |
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else |
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memcpy(data, d->microcode_ram + relative_addr, len); |
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return 1; |
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} |
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|
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switch (relative_addr) { |
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case 0x00004: |
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/* xtalk data: (according to Linux/IP30) */ |
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/* (mfgr & 0x7ff) << 1 */ |
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/* (part & 0xffff) << 12 */ |
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/* (rev & 0xf) << 28 */ |
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odata = (2 << 28) | (0xc003 << 12) | (0x2aa << 1); |
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break; |
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case 0x20008: /* Fifo status */ |
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break; |
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case 0x20200: |
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break; |
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case 0x20400: |
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if (writeflag == MEM_WRITE) |
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mardigras_20400(cpu, d, idata); |
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else |
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debug("[ sgi_mardigras: read from 0x20400? ]\n"); |
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break; |
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case 0x58040: |
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/* HQ4 microcode stuff */ |
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break; |
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case 0x70c30: |
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/* Palette register select? */ |
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if (writeflag == MEM_WRITE) |
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d->palette_reg_select = idata; |
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else |
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odata = d->palette_reg_select; |
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break; |
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case 0x70d18: |
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/* Palette register read/write? */ |
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i = 3 * ((d->palette_reg_select >> 8) & 0xff); |
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if (writeflag == MEM_WRITE) { |
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d->fb->rgb_palette[i + 0] = (idata >> 24) & 0xff; |
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d->fb->rgb_palette[i + 1] = (idata >> 16) & 0xff; |
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d->fb->rgb_palette[i + 2] = (idata >> 8) & 0xff; |
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} else { |
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odata = (d->fb->rgb_palette[i+0] << 24) + |
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(d->fb->rgb_palette[i+1] << 16) + |
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(d->fb->rgb_palette[i+2] << 8); |
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} |
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break; |
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case 0x71208: |
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odata = 8; |
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break; |
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default: |
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if (writeflag==MEM_READ) { |
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debug("[ sgi_mardigras: read from 0x%08lx ]\n", |
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(long)relative_addr); |
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} else { |
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debug("[ sgi_mardigras: write to 0x%08lx: 0x%016llx" |
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" ]\n", (long)relative_addr, (long long)idata); |
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} |
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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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/* |
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* devinit_sgi_mardigras(): |
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*/ |
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int devinit_sgi_mardigras(struct devinit *devinit) |
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{ |
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struct sgi_mardigras_data *d; |
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|
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d = malloc(sizeof(struct sgi_mardigras_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 sgi_mardigras_data)); |
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|
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d->fb = dev_fb_init(devinit->machine, devinit->machine->memory, |
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MARDIGRAS_FAKE_OFFSET, VFB_GENERIC, |
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mardigras_xsize, mardigras_ysize, |
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mardigras_xsize, mardigras_ysize, 24, "SGI MardiGras", 1); |
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if (d->fb == NULL) { |
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fprintf(stderr, "dev_sgi_mardigras_init(): out of memory\n"); |
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exit(1); |
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} |
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|
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memory_device_register(devinit->machine->memory, devinit->name, |
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devinit->addr, DEV_SGI_MARDIGRAS_LENGTH, dev_sgi_mardigras_access, |
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d, MEM_DEFAULT, NULL); |
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|
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return 1; |
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} |
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