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dpavlin |
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/* |
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dpavlin |
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* Copyright (C) 2006-2007 Anders Gavare. All rights reserved. |
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dpavlin |
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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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dpavlin |
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* $Id: dev_igsfb.c,v 1.5 2006/12/30 13:30:58 debug Exp $ |
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dpavlin |
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* |
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* Integraphics Systems "igsfb" Framebuffer (graphics) card, used in at |
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* 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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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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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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#include "igsfbreg.h" |
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#include "vga.h" |
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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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/* 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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* 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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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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* 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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dev_fb_setcursor(d->vfb_data, x, y, 1, 12, 22); |
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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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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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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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DEVICE_ACCESS(igsfb) |
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{ |
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uint64_t idata = 0, odata = 0; |
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struct dev_igsfb_data *d = extra; |
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if (writeflag == MEM_WRITE) |
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idata = memory_readmax64(cpu, data, len); |
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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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} |
225 |
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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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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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} |
236 |
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switch (relative_addr) { |
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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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} |
246 |
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} |
247 |
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break; |
248 |
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249 |
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case IGS_VSE: |
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if (writeflag == MEM_WRITE) { |
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if (idata & ~(IGS_VSE_ENABLE)) { |
252 |
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fatal("[ igsfb: Unimplemented IGS_VSE flags:" |
253 |
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" 0x%08x ]\n", (int)idata); |
254 |
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exit(1); |
255 |
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} |
256 |
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} |
257 |
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break; |
258 |
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259 |
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case IGS_COP_BASE_B + IGS_COP_SRC_MAP_WIDTH_REG: |
260 |
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if (writeflag == MEM_WRITE) |
261 |
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d->src_map_width = idata & 0x3ff; |
262 |
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else |
263 |
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odata = d->src_map_width; |
264 |
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break; |
265 |
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266 |
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case IGS_COP_BASE_B + IGS_COP_SRC2_MAP_WIDTH_REG: |
267 |
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if (writeflag == MEM_WRITE) |
268 |
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d->src2_map_width = idata & 0x3ff; |
269 |
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else |
270 |
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odata = d->src2_map_width; |
271 |
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break; |
272 |
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273 |
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case IGS_COP_BASE_B + IGS_COP_DST_MAP_WIDTH_REG: |
274 |
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if (writeflag == MEM_WRITE) |
275 |
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d->dst_map_width = idata & 0x3ff; |
276 |
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else |
277 |
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odata = d->dst_map_width; |
278 |
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break; |
279 |
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280 |
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case IGS_COP_BASE_B + IGS_COP_MAP_FMT_REG: |
281 |
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if (writeflag == MEM_WRITE) |
282 |
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d->map_fmt = idata; |
283 |
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else |
284 |
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odata = d->map_fmt; |
285 |
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break; |
286 |
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287 |
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case IGS_COP_BASE_B + IGS_COP_CTL_REG: |
288 |
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if (writeflag == MEM_WRITE) |
289 |
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d->ctl = idata; |
290 |
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else |
291 |
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odata = d->ctl; |
292 |
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break; |
293 |
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294 |
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case IGS_COP_BASE_B + IGS_COP_FG_MIX_REG: |
295 |
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if (writeflag == MEM_WRITE) |
296 |
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d->fg_mix = idata; |
297 |
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else |
298 |
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odata = d->fg_mix; |
299 |
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break; |
300 |
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301 |
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case IGS_COP_BASE_B + IGS_COP_BG_MIX_REG: |
302 |
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if (writeflag == MEM_WRITE) |
303 |
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d->bg_mix = idata; |
304 |
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else |
305 |
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odata = d->bg_mix; |
306 |
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break; |
307 |
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308 |
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case IGS_COP_BASE_B + IGS_COP_WIDTH_REG: |
309 |
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if (writeflag == MEM_WRITE) |
310 |
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d->width = idata & 0x3ff; |
311 |
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else |
312 |
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odata = d->width; |
313 |
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break; |
314 |
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315 |
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case IGS_COP_BASE_B + IGS_COP_HEIGHT_REG: |
316 |
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if (writeflag == MEM_WRITE) |
317 |
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d->height = idata & 0x3ff; |
318 |
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else |
319 |
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odata = d->height; |
320 |
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break; |
321 |
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322 |
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case IGS_COP_BASE_B + IGS_COP_SRC_START_REG: |
323 |
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if (writeflag == MEM_WRITE) |
324 |
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d->src_start = idata & 0x3fffff; |
325 |
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else |
326 |
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odata = d->src_start; |
327 |
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break; |
328 |
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329 |
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case IGS_COP_BASE_B + IGS_COP_SRC2_START_REG: |
330 |
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if (writeflag == MEM_WRITE) |
331 |
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d->src2_start = idata & 0x3fffff; |
332 |
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else |
333 |
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odata = d->src2_start; |
334 |
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break; |
335 |
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336 |
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case IGS_COP_BASE_B + IGS_COP_DST_START_REG: |
337 |
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if (writeflag == MEM_WRITE) |
338 |
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d->dst_start = idata & 0x3fffff; |
339 |
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else |
340 |
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odata = d->dst_start; |
341 |
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break; |
342 |
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343 |
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case IGS_COP_BASE_B + IGS_COP_FG_REG: |
344 |
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if (writeflag == MEM_WRITE) |
345 |
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d->fg = idata; |
346 |
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else |
347 |
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odata = d->fg; |
348 |
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break; |
349 |
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350 |
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case IGS_COP_BASE_B + IGS_COP_BG_REG: |
351 |
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if (writeflag == MEM_WRITE) |
352 |
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d->bg = idata; |
353 |
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else |
354 |
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odata = d->bg; |
355 |
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break; |
356 |
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357 |
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case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_0_REG: |
358 |
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if (writeflag == MEM_WRITE) |
359 |
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d->pixel_op_0 = idata; |
360 |
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else |
361 |
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odata = d->pixel_op_0; |
362 |
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break; |
363 |
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|
364 |
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case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_1_REG: |
365 |
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if (writeflag == MEM_WRITE) |
366 |
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d->pixel_op_1 = idata; |
367 |
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else |
368 |
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odata = d->pixel_op_1; |
369 |
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break; |
370 |
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|
371 |
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case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_2_REG: |
372 |
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if (writeflag == MEM_WRITE) |
373 |
|
|
d->pixel_op_2 = idata; |
374 |
|
|
else |
375 |
|
|
odata = d->pixel_op_2; |
376 |
|
|
break; |
377 |
|
|
|
378 |
|
|
case IGS_COP_BASE_B + IGS_COP_PIXEL_OP_3_REG: |
379 |
|
|
if (writeflag == MEM_WRITE) { |
380 |
|
|
d->pixel_op_3 = idata; |
381 |
|
|
dev_igsfb_op3_written(d); |
382 |
|
|
} else { |
383 |
|
|
odata = d->pixel_op_3; |
384 |
|
|
} |
385 |
|
|
break; |
386 |
|
|
|
387 |
|
|
default:if (writeflag == MEM_WRITE) { |
388 |
|
|
fatal("[ igsfb: unimplemented write to address 0x%x" |
389 |
|
|
" data=0x%02x ]\n", (int)relative_addr, (int)idata); |
390 |
|
|
} else { |
391 |
|
|
fatal("[ igsfb: unimplemented read from address 0x%x " |
392 |
|
|
"]\n", (int)relative_addr); |
393 |
|
|
} |
394 |
|
|
exit(1); |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
if (writeflag == MEM_READ) |
398 |
|
|
memory_writemax64(cpu, data, len, odata); |
399 |
|
|
|
400 |
|
|
return 1; |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
|
404 |
|
|
DEVINIT(igsfb) |
405 |
|
|
{ |
406 |
|
|
struct dev_igsfb_data *d; |
407 |
|
|
d = malloc(sizeof(struct dev_igsfb_data)); |
408 |
|
|
if (d == NULL) { |
409 |
|
|
fprintf(stderr, "out of memory\n"); |
410 |
|
|
exit(1); |
411 |
|
|
} |
412 |
|
|
memset(d, 0, sizeof(struct dev_igsfb_data)); |
413 |
|
|
|
414 |
|
|
d->xres = 1024; |
415 |
|
|
d->yres = 768; |
416 |
|
|
d->bitdepth = 8; |
417 |
|
|
d->vfb_data = dev_fb_init(devinit->machine, devinit->machine->memory, |
418 |
|
|
0x400000 + devinit->addr, VFB_GENERIC, d->xres, d->yres, |
419 |
|
|
d->xres, d->yres, d->bitdepth, "igsfb"); |
420 |
|
|
|
421 |
|
|
/* TODO: Palette control etc at 0x3c0 + IGS_MEM_MMIO_SELECT */ |
422 |
|
|
|
423 |
|
|
memory_device_register(devinit->machine->memory, devinit->name, |
424 |
|
|
devinit->addr + IGS_MEM_MMIO_SELECT, 0x100000, |
425 |
|
|
dev_igsfb_access, d, DM_DEFAULT, NULL); |
426 |
|
|
|
427 |
|
|
return 1; |
428 |
|
|
} |
429 |
|
|
|