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/* |
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* Copyright (C) 2006-2007 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_igsfb.c,v 1.6 2007/06/15 19:11:15 debug Exp $ |
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* |
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* COMMENT: Integraphics Systems "igsfb" Framebuffer graphics card |
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* |
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* Used in at least the NetWinder. |
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* |
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* TODO: This is hardcoded to 1024x768x8 right now, and only supports the |
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* two acceleration commands used by NetBSD for scrolling the |
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* framebuffer. The cursor is hardcoded to 12x22 pixels, as that is |
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* what NetBSD/netwinder uses. |
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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 "console.h" |
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#include "device.h" |
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#include "devices.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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#include "igsfbreg.h" |
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#include "vga.h" |
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|
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|
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struct dev_igsfb_data { |
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int xres; |
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int yres; |
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int bitdepth; |
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struct vfb_data *vfb_data; |
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|
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/* VGA palette stuff: */ |
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int palette_write_index; |
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int palette_write_subindex; |
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|
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/* |
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* Various graphics controller registers. See igsfbreg.h for a |
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* brief explanation of what these do. |
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*/ |
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int src_map_width; |
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int src2_map_width; |
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int dst_map_width; |
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int src_start; |
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int src2_start; |
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int dst_start; |
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int map_fmt; |
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int ctl; |
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int fg_mix; |
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int bg_mix; |
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int width; |
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int height; |
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int fg; |
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int bg; |
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int pixel_op_0; |
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int pixel_op_1; |
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int pixel_op_2; |
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int pixel_op_3; |
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|
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uint8_t ext_reg_select; |
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uint8_t ext_reg[256]; |
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}; |
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|
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|
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/* |
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* recalc_sprite_position(): |
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* |
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* TODO: This is hardcoded for NetBSD/netwinder's 12x22 pixel cursor. |
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*/ |
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static void recalc_sprite_position(struct dev_igsfb_data *d) |
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{ |
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int x = d->ext_reg[IGS_EXT_SPRITE_HSTART_LO] + |
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d->ext_reg[IGS_EXT_SPRITE_HSTART_HI] * 256; |
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int y = d->ext_reg[IGS_EXT_SPRITE_VSTART_LO] + |
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d->ext_reg[IGS_EXT_SPRITE_VSTART_HI] * 256; |
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|
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dev_fb_setcursor(d->vfb_data, x, y, 1, 12, 22); |
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} |
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|
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|
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/* |
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* dev_igsfb_op3_written(): |
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* |
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* This function is called after the pixel_op_3 register has been written to. |
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* I guess this is what triggers accelerated functions to start executing. |
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* |
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* NOTE/TODO: Only those necessary to run NetBSD/netwinder have been |
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* implemented. |
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*/ |
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static void dev_igsfb_op3_written(struct dev_igsfb_data *d) |
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{ |
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if (d->pixel_op_0 == 0x00 && d->pixel_op_1 == 0x80 && |
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d->pixel_op_2 == 0x00 && d->pixel_op_3 == 0x28 && |
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d->fg_mix == 0x03 && d->ctl == 0x00) { |
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/* NetBSD scroll-up */ |
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framebuffer_blockcopyfill(d->vfb_data, 0, 0,0,0, |
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d->dst_start % d->xres, d->dst_start / d->xres, |
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d->dst_start % d->xres + d->width, |
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d->dst_start / d->xres + d->height, |
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d->src_start % d->xres, d->src_start / d->xres); |
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return; |
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} |
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|
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if (d->pixel_op_0 == 0x00 && d->pixel_op_1 == 0x80 && |
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d->pixel_op_2 == 0x00 && d->pixel_op_3 == 0x08 && |
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d->fg_mix == 0x03 && d->ctl == 0x00) { |
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/* NetBSD fill */ |
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/* TODO: Color! */ |
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framebuffer_blockcopyfill(d->vfb_data, 1, 0,0,0, |
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d->dst_start % d->xres, d->dst_start / d->xres, |
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d->dst_start % d->xres + d->width, |
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d->dst_start / d->xres + d->height, |
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0, 0); |
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return; |
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} |
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|
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fatal("\nUnimplemented igsfb accelerated framebuffer command:\n"); |
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fatal("pixel_op_0 = 0x%02x\n", d->pixel_op_0); |
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fatal("pixel_op_1 = 0x%02x\n", d->pixel_op_1); |
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fatal("pixel_op_2 = 0x%02x\n", d->pixel_op_2); |
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fatal("pixel_op_3 = 0x%02x\n", d->pixel_op_3); |
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fatal("fg_mix = 0x%02x\n", d->fg_mix); |
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fatal("ctl = 0x%02x\n", d->ctl); |
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fatal("src_start = 0x%x\n", d->src_start); |
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fatal("dst_start = 0x%x\n", d->dst_start); |
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fatal("width = %i\n", d->width); |
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fatal("height = %i\n", d->height); |
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exit(1); |
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} |
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|
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|
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DEVICE_ACCESS(igsfb) |
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{ |
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struct dev_igsfb_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 (relative_addr >= 0x3c0 && relative_addr <= 0x3df) { |
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switch (relative_addr - 0x3c0) { |
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case VGA_DAC_ADDR_WRITE: /* 0x08 */ |
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if (writeflag == MEM_WRITE) { |
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d->palette_write_index = idata; |
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d->palette_write_subindex = 0; |
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} else { |
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fatal("[ igsdb: WARNING: Read from " |
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"VGA_DAC_ADDR_WRITE? ]\n"); |
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odata = d->palette_write_index; |
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} |
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break; |
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case VGA_DAC_DATA: /* 0x09 */ |
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if (writeflag == MEM_WRITE) { |
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/* Note: 8-bit color, not 6, so it isn't |
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exactly like normal VGA palette: */ |
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int new = idata & 0xff; |
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int old = d->vfb_data->rgb_palette[d-> |
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palette_write_index*3+d-> |
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palette_write_subindex]; |
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d->vfb_data->rgb_palette[d->palette_write_index |
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* 3 + d->palette_write_subindex] = new; |
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/* Redraw whole screen, if the |
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palette changed: */ |
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if (new != old) { |
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d->vfb_data->update_x1 = |
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d->vfb_data->update_y1 = 0; |
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d->vfb_data->update_x2 = d->xres - 1; |
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d->vfb_data->update_y2 = d->yres - 1; |
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} |
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d->palette_write_subindex ++; |
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if (d->palette_write_subindex == 3) { |
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d->palette_write_index ++; |
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d->palette_write_subindex = 0; |
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} |
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} |
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/* Note/TODO: Reading from the palette isn't |
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implemented here. */ |
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break; |
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case 0xe: /* IGSFB extended register select */ |
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if (writeflag == MEM_WRITE) |
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d->ext_reg_select = idata; |
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else |
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odata = d->ext_reg_select; |
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break; |
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case 0xf: /* IGSFB extended register data */ |
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if (writeflag == MEM_READ) |
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odata = d->ext_reg[d->ext_reg_select]; |
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else { |
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d->ext_reg[d->ext_reg_select] = idata; |
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switch (d->ext_reg_select) { |
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/* case IGS_EXT_SPRITE_HSTART_LO: |
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case IGS_EXT_SPRITE_HSTART_HI: |
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case IGS_EXT_SPRITE_VSTART_LO: */ |
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case IGS_EXT_SPRITE_VSTART_HI: |
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recalc_sprite_position(d); |
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break; |
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} |
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} |
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break; |
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} |
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return 1; |
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} |
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|
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if (relative_addr >= IGS_COP_BASE_A && |
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relative_addr < IGS_COP_BASE_A + IGS_COP_SIZE) { |
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fatal("[ igsfb: BASE A not implemented yet, only BASE B ]\n"); |
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exit(1); |
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} |
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|
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switch (relative_addr) { |
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|
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case IGS_VDO: |
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if (writeflag == MEM_WRITE) { |
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if (idata & ~(IGS_VDO_ENABLE | IGS_VDO_SETUP)) { |
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fatal("[ igsfb: Unimplemented IGS_VDO flags:" |
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" 0x%08x ]\n", (int)idata); |
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exit(1); |
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} |
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} |
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break; |
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|
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case IGS_VSE: |
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if (writeflag == MEM_WRITE) { |
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if (idata & ~(IGS_VSE_ENABLE)) { |
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fatal("[ igsfb: Unimplemented IGS_VSE flags:" |
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" 0x%08x ]\n", (int)idata); |
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exit(1); |
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} |
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} |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_SRC_MAP_WIDTH_REG: |
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if (writeflag == MEM_WRITE) |
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d->src_map_width = idata & 0x3ff; |
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else |
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odata = d->src_map_width; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_SRC2_MAP_WIDTH_REG: |
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if (writeflag == MEM_WRITE) |
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d->src2_map_width = idata & 0x3ff; |
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else |
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odata = d->src2_map_width; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_DST_MAP_WIDTH_REG: |
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if (writeflag == MEM_WRITE) |
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d->dst_map_width = idata & 0x3ff; |
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else |
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odata = d->dst_map_width; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_MAP_FMT_REG: |
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if (writeflag == MEM_WRITE) |
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d->map_fmt = idata; |
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else |
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odata = d->map_fmt; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_CTL_REG: |
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if (writeflag == MEM_WRITE) |
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d->ctl = idata; |
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else |
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odata = d->ctl; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_FG_MIX_REG: |
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if (writeflag == MEM_WRITE) |
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d->fg_mix = idata; |
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else |
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odata = d->fg_mix; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_BG_MIX_REG: |
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if (writeflag == MEM_WRITE) |
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d->bg_mix = idata; |
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else |
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odata = d->bg_mix; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_WIDTH_REG: |
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if (writeflag == MEM_WRITE) |
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d->width = idata & 0x3ff; |
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else |
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odata = d->width; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_HEIGHT_REG: |
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if (writeflag == MEM_WRITE) |
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d->height = idata & 0x3ff; |
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else |
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odata = d->height; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_SRC_START_REG: |
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if (writeflag == MEM_WRITE) |
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d->src_start = idata & 0x3fffff; |
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else |
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odata = d->src_start; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_SRC2_START_REG: |
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if (writeflag == MEM_WRITE) |
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d->src2_start = idata & 0x3fffff; |
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else |
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odata = d->src2_start; |
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break; |
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|
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case IGS_COP_BASE_B + IGS_COP_DST_START_REG: |
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if (writeflag == MEM_WRITE) |
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d->dst_start = idata & 0x3fffff; |
| 340 |
else |
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odata = d->dst_start; |
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break; |
| 343 |
|
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case IGS_COP_BASE_B + IGS_COP_FG_REG: |
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if (writeflag == MEM_WRITE) |
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d->fg = idata; |
| 347 |
else |
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odata = d->fg; |
| 349 |
break; |
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|
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case IGS_COP_BASE_B + IGS_COP_BG_REG: |
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if (writeflag == MEM_WRITE) |
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d->bg = idata; |
| 354 |
else |
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odata = d->bg; |
| 356 |
break; |
| 357 |
|
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case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_0_REG: |
| 359 |
if (writeflag == MEM_WRITE) |
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d->pixel_op_0 = idata; |
| 361 |
else |
| 362 |
odata = d->pixel_op_0; |
| 363 |
break; |
| 364 |
|
| 365 |
case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_1_REG: |
| 366 |
if (writeflag == MEM_WRITE) |
| 367 |
d->pixel_op_1 = idata; |
| 368 |
else |
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odata = d->pixel_op_1; |
| 370 |
break; |
| 371 |
|
| 372 |
case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_2_REG: |
| 373 |
if (writeflag == MEM_WRITE) |
| 374 |
d->pixel_op_2 = idata; |
| 375 |
else |
| 376 |
odata = d->pixel_op_2; |
| 377 |
break; |
| 378 |
|
| 379 |
case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_3_REG: |
| 380 |
if (writeflag == MEM_WRITE) { |
| 381 |
d->pixel_op_3 = idata; |
| 382 |
dev_igsfb_op3_written(d); |
| 383 |
} else { |
| 384 |
odata = d->pixel_op_3; |
| 385 |
} |
| 386 |
break; |
| 387 |
|
| 388 |
default:if (writeflag == MEM_WRITE) { |
| 389 |
fatal("[ igsfb: unimplemented write to address 0x%x" |
| 390 |
" data=0x%02x ]\n", (int)relative_addr, (int)idata); |
| 391 |
} else { |
| 392 |
fatal("[ igsfb: unimplemented read from address 0x%x " |
| 393 |
"]\n", (int)relative_addr); |
| 394 |
} |
| 395 |
exit(1); |
| 396 |
} |
| 397 |
|
| 398 |
if (writeflag == MEM_READ) |
| 399 |
memory_writemax64(cpu, data, len, odata); |
| 400 |
|
| 401 |
return 1; |
| 402 |
} |
| 403 |
|
| 404 |
|
| 405 |
DEVINIT(igsfb) |
| 406 |
{ |
| 407 |
struct dev_igsfb_data *d; |
| 408 |
|
| 409 |
CHECK_ALLOCATION(d = malloc(sizeof(struct dev_igsfb_data))); |
| 410 |
memset(d, 0, sizeof(struct dev_igsfb_data)); |
| 411 |
|
| 412 |
d->xres = 1024; |
| 413 |
d->yres = 768; |
| 414 |
d->bitdepth = 8; |
| 415 |
d->vfb_data = dev_fb_init(devinit->machine, devinit->machine->memory, |
| 416 |
0x400000 + devinit->addr, VFB_GENERIC, d->xres, d->yres, |
| 417 |
d->xres, d->yres, d->bitdepth, "igsfb"); |
| 418 |
|
| 419 |
/* TODO: Palette control etc at 0x3c0 + IGS_MEM_MMIO_SELECT */ |
| 420 |
|
| 421 |
memory_device_register(devinit->machine->memory, devinit->name, |
| 422 |
devinit->addr + IGS_MEM_MMIO_SELECT, 0x100000, |
| 423 |
dev_igsfb_access, d, DM_DEFAULT, NULL); |
| 424 |
|
| 425 |
return 1; |
| 426 |
} |
| 427 |
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