| 1 |
/* |
| 2 |
* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
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* |
| 4 |
* Redistribution and use in source and binary forms, with or without |
| 5 |
* 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 |
| 10 |
* 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 |
| 17 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 |
* 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_bt459.c,v 1.61 2005/11/13 00:14:08 debug Exp $ |
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* |
| 30 |
* Brooktree 459 vdac, used by TURBOchannel graphics cards. |
| 31 |
*/ |
| 32 |
|
| 33 |
#include <stdio.h> |
| 34 |
#include <stdlib.h> |
| 35 |
#include <string.h> |
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|
| 37 |
#include "cpu.h" |
| 38 |
#include "devices.h" |
| 39 |
#include "machine.h" |
| 40 |
#include "memory.h" |
| 41 |
#include "misc.h" |
| 42 |
#include "x11.h" |
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|
| 44 |
#include "bt459.h" |
| 45 |
|
| 46 |
|
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#ifdef WITH_X11 |
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#include <X11/Xlib.h> |
| 49 |
#include <X11/Xutil.h> |
| 50 |
#endif |
| 51 |
|
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extern int quiet_mode; |
| 53 |
|
| 54 |
|
| 55 |
/* #define BT459_DEBUG */ |
| 56 |
/* #define WITH_CURSOR_DEBUG */ |
| 57 |
#define BT459_TICK_SHIFT 14 |
| 58 |
|
| 59 |
struct bt459_data { |
| 60 |
uint32_t bt459_reg[DEV_BT459_NREGS]; |
| 61 |
|
| 62 |
unsigned char cur_addr_hi; |
| 63 |
unsigned char cur_addr_lo; |
| 64 |
|
| 65 |
int planes; |
| 66 |
int type; |
| 67 |
|
| 68 |
int irq_nr; |
| 69 |
int interrupts_enable; |
| 70 |
int interrupt_time; |
| 71 |
int interrupt_time_reset_value; |
| 72 |
|
| 73 |
int cursor_x_add; |
| 74 |
int cursor_y_add; |
| 75 |
|
| 76 |
int need_to_redraw_whole_screen; |
| 77 |
|
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int need_to_update_cursor_shape; |
| 79 |
int cursor_on; |
| 80 |
int cursor_x; |
| 81 |
int cursor_y; |
| 82 |
int cursor_xsize; |
| 83 |
int cursor_ysize; |
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|
| 85 |
int palette_sub_offset; /* 0, 1, or 2 */ |
| 86 |
|
| 87 |
struct vfb_data *vfb_data; |
| 88 |
|
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/* |
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* There is one pointer to the framebuffer's RGB palette, |
| 91 |
* and then a local copy of the palette. 256 * 3 bytes (r,g,b). |
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* The reason for this is that when we need to blank the screen |
| 93 |
* (ie video_on = 0), we can set the framebuffer's palette to all |
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* zeroes, but keep our own copy intact, to be reused later again |
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* when the screen is unblanked. |
| 96 |
*/ |
| 97 |
int video_on; |
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unsigned char *rgb_palette; /* 256 * 3 (r,g,b) */ |
| 99 |
unsigned char local_rgb_palette[256 * 3]; |
| 100 |
}; |
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|
| 102 |
|
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/* |
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* bt459_state(): |
| 105 |
*/ |
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int bt459_state(struct cpu *cpu, struct memory *mem, void *extra, int wf, |
| 107 |
int nr, int *type, char **namep, void **data, size_t *len) |
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{ |
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struct bt459_data *d = (struct bt459_data *) extra; |
| 110 |
|
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switch (nr) { |
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case 0: if (wf) { |
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memcpy(&d->cursor_on, *data, *len); |
| 114 |
} else { |
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(*namep) = "cursor_on"; |
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(*type) = DEVICE_STATE_TYPE_INT; |
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*len = sizeof(d->cursor_on); |
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*data = &d->cursor_on; |
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} |
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break; |
| 121 |
case 1: if (wf) { |
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memcpy(&d->cursor_x, *data, *len); |
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} else { |
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(*namep) = "cursor_x"; |
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(*type) = DEVICE_STATE_TYPE_INT; |
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*len = sizeof(d->cursor_x); |
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*data = &d->cursor_x; |
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} |
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break; |
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case 2: if (wf) { |
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memcpy(&d->cursor_y, *data, *len); |
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} else { |
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(*namep) = "cursor_y"; |
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(*type) = DEVICE_STATE_TYPE_INT; |
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*len = sizeof(d->cursor_y); |
| 136 |
*data = &d->cursor_y; |
| 137 |
} |
| 138 |
break; |
| 139 |
case 3: if (wf) { |
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memcpy(&d->cursor_xsize, *data, *len); |
| 141 |
} else { |
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(*namep) = "cursor_xsize"; |
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(*type) = DEVICE_STATE_TYPE_INT; |
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*len = sizeof(d->cursor_xsize); |
| 145 |
*data = &d->cursor_xsize; |
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} |
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break; |
| 148 |
case 4: if (wf) { |
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memcpy(&d->cursor_ysize, *data, *len); |
| 150 |
} else { |
| 151 |
(*namep) = "cursor_ysize"; |
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(*type) = DEVICE_STATE_TYPE_INT; |
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*len = sizeof(d->cursor_ysize); |
| 154 |
*data = &d->cursor_ysize; |
| 155 |
} |
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break; |
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default: |
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return 0; |
| 159 |
} |
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|
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return 1; |
| 162 |
} |
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|
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|
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/* |
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* bt459_update_X_cursor(): |
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* |
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* This routine takes the color values in the cursor RAM area, and put them |
| 169 |
* in the framebuffer window's cursor_pixels. |
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* |
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* d->cursor_xsize and ysize are also updated. |
| 172 |
*/ |
| 173 |
static void bt459_update_X_cursor(struct cpu *cpu, struct bt459_data *d) |
| 174 |
{ |
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int i, x,y, xmax=0, ymax=0; |
| 176 |
int bw_only = 1; |
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|
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/* First, let's calculate the size of the cursor: */ |
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for (y=0; y<64; y++) |
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for (x=0; x<64; x+=4) { |
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int reg = BT459_REG_CRAM_BASE + y*16 + x/4; |
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unsigned char data = d->bt459_reg[reg]; |
| 183 |
|
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if (data) |
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ymax = y; |
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|
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for (i=0; i<4; i++) { |
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int color = (data >> (6-2*i)) & 3; |
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if (color != 0) |
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xmax = x + i; |
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if (color != 0 && color != 3) |
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bw_only = 0; |
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} |
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} |
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|
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d->cursor_xsize = xmax + 1; |
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d->cursor_ysize = ymax + 1; |
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|
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/* |
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* The 'bw_only' hack is because it is nicer to have the b/w |
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* text cursor invert whatever it is standing on, not just overwrite |
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* it with a big white box. |
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* |
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* The following seems to work with NetBSD/OpenBSD/Ultrix/Sprite: |
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* 0 = transparent, 1 and 2 = use the color specified by |
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* BT459_REG_CCOLOR_2, 3 = reverse of color 1/2. |
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*/ |
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|
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#ifdef WITH_X11 |
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if (cpu->machine->use_x11 && d->vfb_data->fb_window != NULL) { |
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for (y=0; y<=ymax; y++) { |
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for (x=0; x<=xmax; x+=4) { |
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struct fb_window *win = d->vfb_data->fb_window; |
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int reg = BT459_REG_CRAM_BASE + y*16 + x/4; |
| 215 |
unsigned char data = d->bt459_reg[reg]; |
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|
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for (i=0; i<4; i++) { |
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int color = (data >> (6-2*i)) & 3; |
| 219 |
int pixelvalue; |
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|
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if (bw_only) { |
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if (color) |
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pixelvalue = |
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CURSOR_COLOR_INVERT; |
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else |
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pixelvalue = 0; |
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} else { |
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pixelvalue = |
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CURSOR_COLOR_TRANSPARENT; |
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switch (color) { |
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case 1: |
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case 2: pixelvalue = (d-> |
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bt459_reg[ |
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BT459_REG_CCOLOR_2] |
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>> 4) & 0xf; |
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break; |
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case 3: pixelvalue = 15 - |
| 238 |
((d->bt459_reg[ |
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BT459_REG_CCOLOR_2] |
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>> 4) & 0xf); |
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break; |
| 242 |
} |
| 243 |
} |
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|
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win->cursor_pixels[y][x+i] = |
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pixelvalue; |
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#ifdef WITH_CURSOR_DEBUG |
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printf("%i", color); |
| 249 |
#endif |
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} |
| 251 |
} |
| 252 |
#ifdef WITH_CURSOR_DEBUG |
| 253 |
printf("\n"); |
| 254 |
#endif |
| 255 |
} |
| 256 |
#ifdef WITH_CURSOR_DEBUG |
| 257 |
printf("color 1,2,3 = 0x%02x, 0x%02x, 0x%02x\n", |
| 258 |
d->bt459_reg[BT459_REG_CCOLOR_1], |
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d->bt459_reg[BT459_REG_CCOLOR_2], |
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d->bt459_reg[BT459_REG_CCOLOR_3]); |
| 261 |
printf("\n"); |
| 262 |
#endif |
| 263 |
/* |
| 264 |
* Make sure the cursor is redrawn, if it is on: |
| 265 |
* |
| 266 |
* How does this work? Well, 0 is off, and non-zero is on, |
| 267 |
* but if the old and new differ, the cursor is redrawn. |
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* (Hopefully this will "never" overflow.) |
| 269 |
*/ |
| 270 |
if (d->cursor_on) |
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d->cursor_on ++; |
| 272 |
} |
| 273 |
#endif |
| 274 |
} |
| 275 |
|
| 276 |
|
| 277 |
/* |
| 278 |
* bt459_update_cursor_position(): |
| 279 |
*/ |
| 280 |
static void bt459_update_cursor_position(struct bt459_data *d, |
| 281 |
int old_cursor_on) |
| 282 |
{ |
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int new_cursor_x = (d->bt459_reg[BT459_REG_CXLO] & 255) + |
| 284 |
((d->bt459_reg[BT459_REG_CXHI] & 255) << 8) - d->cursor_x_add; |
| 285 |
int new_cursor_y = (d->bt459_reg[BT459_REG_CYLO] & 255) + |
| 286 |
((d->bt459_reg[BT459_REG_CYHI] & 255) << 8) - d->cursor_y_add; |
| 287 |
|
| 288 |
if (new_cursor_x != d->cursor_x || new_cursor_y != d->cursor_y || |
| 289 |
d->cursor_on != old_cursor_on) { |
| 290 |
int on; |
| 291 |
|
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d->cursor_x = new_cursor_x; |
| 293 |
d->cursor_y = new_cursor_y; |
| 294 |
|
| 295 |
if (!quiet_mode) |
| 296 |
debug("[ bt459: cursor = %03i,%03i ]\n", |
| 297 |
d->cursor_x, d->cursor_y); |
| 298 |
|
| 299 |
on = d->cursor_on; |
| 300 |
if (d->cursor_xsize == 0 || d->cursor_ysize == 0) |
| 301 |
on = 0; |
| 302 |
|
| 303 |
dev_fb_setcursor(d->vfb_data, d->cursor_x, d->cursor_y, |
| 304 |
on, d->cursor_xsize, d->cursor_ysize); |
| 305 |
} |
| 306 |
} |
| 307 |
|
| 308 |
|
| 309 |
/* |
| 310 |
* dev_bt459_tick(): |
| 311 |
*/ |
| 312 |
void dev_bt459_tick(struct cpu *cpu, void *extra) |
| 313 |
{ |
| 314 |
struct bt459_data *d = extra; |
| 315 |
int old_cursor_on = d->cursor_on; |
| 316 |
|
| 317 |
if (d->need_to_update_cursor_shape) { |
| 318 |
d->need_to_update_cursor_shape = 0; |
| 319 |
bt459_update_X_cursor(cpu, d); |
| 320 |
bt459_update_cursor_position(d, old_cursor_on); |
| 321 |
} |
| 322 |
|
| 323 |
if (d->need_to_redraw_whole_screen) { |
| 324 |
d->vfb_data->update_x1 = 0; |
| 325 |
d->vfb_data->update_x2 = d->vfb_data->xsize - 1; |
| 326 |
d->vfb_data->update_y1 = 0; |
| 327 |
d->vfb_data->update_y2 = d->vfb_data->ysize - 1; |
| 328 |
d->need_to_redraw_whole_screen = 0; |
| 329 |
} |
| 330 |
|
| 331 |
/* |
| 332 |
* Vertical retrace interrupts. (This hack is kind of ugly.) |
| 333 |
* Once every 'interrupt_time_reset_value', the interrupt is |
| 334 |
* asserted. It is acked either manually (by someone reading |
| 335 |
* a normal BT459 register or the Interrupt ack register), |
| 336 |
* or after another tick has passed. (This is to prevent |
| 337 |
* lockups from unhandled interrupts.) |
| 338 |
*/ |
| 339 |
if (d->type != BT459_PX && d->interrupts_enable && d->irq_nr > 0) { |
| 340 |
d->interrupt_time --; |
| 341 |
if (d->interrupt_time < 0) { |
| 342 |
d->interrupt_time = d->interrupt_time_reset_value; |
| 343 |
cpu_interrupt(cpu, d->irq_nr); |
| 344 |
} else |
| 345 |
cpu_interrupt_ack(cpu, d->irq_nr); |
| 346 |
} |
| 347 |
} |
| 348 |
|
| 349 |
|
| 350 |
/* |
| 351 |
* dev_bt459_irq_access(): |
| 352 |
*/ |
| 353 |
int dev_bt459_irq_access(struct cpu *cpu, struct memory *mem, |
| 354 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 355 |
int writeflag, void *extra) |
| 356 |
{ |
| 357 |
struct bt459_data *d = (struct bt459_data *) extra; |
| 358 |
uint64_t idata = 0, odata = 0; |
| 359 |
|
| 360 |
if (writeflag == MEM_WRITE) |
| 361 |
idata = memory_readmax64(cpu, data, len); |
| 362 |
|
| 363 |
#ifdef BT459_DEBUG |
| 364 |
fatal("[ bt459: IRQ ack ]\n"); |
| 365 |
#endif |
| 366 |
|
| 367 |
d->interrupts_enable = 1; |
| 368 |
if (d->irq_nr > 0) |
| 369 |
cpu_interrupt_ack(cpu, d->irq_nr); |
| 370 |
|
| 371 |
if (writeflag == MEM_READ) |
| 372 |
memory_writemax64(cpu, data, len, odata); |
| 373 |
|
| 374 |
return 1; |
| 375 |
} |
| 376 |
|
| 377 |
|
| 378 |
/* |
| 379 |
* dev_bt459_access(): |
| 380 |
*/ |
| 381 |
int dev_bt459_access(struct cpu *cpu, struct memory *mem, |
| 382 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 383 |
int writeflag, void *extra) |
| 384 |
{ |
| 385 |
struct bt459_data *d = (struct bt459_data *) extra; |
| 386 |
uint64_t idata = 0, odata = 0; |
| 387 |
int btaddr, old_cursor_on = d->cursor_on, modified; |
| 388 |
|
| 389 |
idata = memory_readmax64(cpu, data, len); |
| 390 |
|
| 391 |
#ifdef BT459_DEBUG |
| 392 |
if (writeflag == MEM_WRITE) |
| 393 |
fatal("[ bt459: write to addr 0x%02x: %08x ]\n", |
| 394 |
(int)relative_addr, (int)idata); |
| 395 |
#endif |
| 396 |
|
| 397 |
/* |
| 398 |
* Vertical retrace interrupts are acked either by |
| 399 |
* accessing a normal BT459 register, or the irq register, |
| 400 |
* or by simply "missing" it. |
| 401 |
*/ |
| 402 |
if (d->irq_nr > 0) |
| 403 |
cpu_interrupt_ack(cpu, d->irq_nr); |
| 404 |
|
| 405 |
/* ID register is read-only, should always be 0x4a or 0x4a4a4a: */ |
| 406 |
if (d->planes == 24) |
| 407 |
d->bt459_reg[BT459_REG_ID] = 0x4a4a4a; |
| 408 |
else { |
| 409 |
/* |
| 410 |
* TODO: Is it really 0x4a, or 0x4a0000? |
| 411 |
* Ultrix panics with a "bad VDAC ID" message if 0x4a |
| 412 |
* is returned. |
| 413 |
*/ |
| 414 |
d->bt459_reg[BT459_REG_ID] = 0x4a0000; |
| 415 |
} |
| 416 |
|
| 417 |
btaddr = ((d->cur_addr_hi << 8) + d->cur_addr_lo) % DEV_BT459_NREGS; |
| 418 |
|
| 419 |
/* Read from/write to the bt459: */ |
| 420 |
switch (relative_addr) { |
| 421 |
case 0x00: /* Low byte of address: */ |
| 422 |
if (writeflag == MEM_WRITE) { |
| 423 |
if (!quiet_mode) |
| 424 |
debug("[ bt459: write to Low Address Byte, " |
| 425 |
"0x%02x ]\n", (int)idata); |
| 426 |
d->cur_addr_lo = idata; |
| 427 |
d->palette_sub_offset = 0; |
| 428 |
} else { |
| 429 |
odata = d->cur_addr_lo; |
| 430 |
if (!quiet_mode) |
| 431 |
debug("[ bt459: read from Low Address Byte: " |
| 432 |
"0x%0x ]\n", (int)odata); |
| 433 |
} |
| 434 |
break; |
| 435 |
case 0x04: /* High byte of address: */ |
| 436 |
if (writeflag == MEM_WRITE) { |
| 437 |
if (!quiet_mode) |
| 438 |
debug("[ bt459: write to High Address Byte, " |
| 439 |
"0x%02x ]\n", (int)idata); |
| 440 |
d->cur_addr_hi = idata; |
| 441 |
d->palette_sub_offset = 0; |
| 442 |
} else { |
| 443 |
odata = d->cur_addr_hi; |
| 444 |
if (!quiet_mode) |
| 445 |
debug("[ bt459: read from High Address Byte: " |
| 446 |
"0x%0x ]\n", (int)odata); |
| 447 |
} |
| 448 |
break; |
| 449 |
case 0x08: /* Register access: */ |
| 450 |
if (writeflag == MEM_WRITE) { |
| 451 |
if (!quiet_mode) |
| 452 |
debug("[ bt459: write to BT459 register " |
| 453 |
"0x%04x, value 0x%02x ]\n", btaddr, |
| 454 |
(int)idata); |
| 455 |
modified = (d->bt459_reg[btaddr] != idata); |
| 456 |
d->bt459_reg[btaddr] = idata; |
| 457 |
|
| 458 |
switch (btaddr) { |
| 459 |
case BT459_REG_CCOLOR_1: |
| 460 |
case BT459_REG_CCOLOR_2: |
| 461 |
case BT459_REG_CCOLOR_3: |
| 462 |
if (modified) |
| 463 |
d->need_to_update_cursor_shape = 1; |
| 464 |
break; |
| 465 |
case BT459_REG_PRM: |
| 466 |
/* |
| 467 |
* NetBSD writes 0x00 to this register to |
| 468 |
* blank the screen (video off), and 0xff |
| 469 |
* to turn the screen on. |
| 470 |
*/ |
| 471 |
switch (idata & 0xff) { |
| 472 |
case 0: d->video_on = 0; |
| 473 |
memset(d->rgb_palette, 0, 256*3); |
| 474 |
d->need_to_redraw_whole_screen = 1; |
| 475 |
debug("[ bt459: video OFF ]\n"); |
| 476 |
break; |
| 477 |
default:d->video_on = 1; |
| 478 |
memcpy(d->rgb_palette, |
| 479 |
d->local_rgb_palette, 256*3); |
| 480 |
d->need_to_redraw_whole_screen = 1; |
| 481 |
debug("[ bt459: video ON ]\n"); |
| 482 |
} |
| 483 |
break; |
| 484 |
case BT459_REG_CCR: |
| 485 |
/* Cursor control register: */ |
| 486 |
switch (idata & 0xff) { |
| 487 |
case 0x00: d->cursor_on = 0; break; |
| 488 |
case 0xc0: |
| 489 |
case 0xc1: d->cursor_on = 1; break; |
| 490 |
default: |
| 491 |
fatal("[ bt459: unimplemented CCR " |
| 492 |
"value 0x%08x ]\n", (int)idata); |
| 493 |
} |
| 494 |
if (modified) |
| 495 |
d->need_to_update_cursor_shape = 1; |
| 496 |
break; |
| 497 |
default: |
| 498 |
if (btaddr < 0x100) |
| 499 |
fatal("[ bt459: write to BT459 " |
| 500 |
"register 0x%04x, value 0x%02x ]\n", |
| 501 |
btaddr, (int)idata); |
| 502 |
} |
| 503 |
|
| 504 |
/* Write to cursor bitmap: */ |
| 505 |
if (btaddr >= BT459_REG_CRAM_BASE && modified) |
| 506 |
d->need_to_update_cursor_shape = 1; |
| 507 |
} else { |
| 508 |
odata = d->bt459_reg[btaddr]; |
| 509 |
|
| 510 |
/* Perhaps this hack is not necessary: */ |
| 511 |
if (btaddr == BT459_REG_ID && len==1) |
| 512 |
odata = (odata >> 16) & 255; |
| 513 |
|
| 514 |
if (!quiet_mode) |
| 515 |
debug("[ bt459: read from BT459 register " |
| 516 |
"0x%04x, value 0x%02x ]\n", btaddr, |
| 517 |
(int)odata); |
| 518 |
} |
| 519 |
|
| 520 |
/* Go to next register: */ |
| 521 |
d->cur_addr_lo ++; |
| 522 |
if (d->cur_addr_lo == 0) |
| 523 |
d->cur_addr_hi ++; |
| 524 |
break; |
| 525 |
case 0xc: /* Color map: */ |
| 526 |
if (writeflag == MEM_WRITE) { |
| 527 |
idata &= 255; |
| 528 |
if (!quiet_mode) |
| 529 |
debug("[ bt459: write to BT459 colormap " |
| 530 |
"0x%04x subaddr %i, value 0x%02x ]\n", |
| 531 |
btaddr, d->palette_sub_offset, (int)idata); |
| 532 |
|
| 533 |
if (btaddr < 0x100) { |
| 534 |
if (d->video_on && |
| 535 |
d->local_rgb_palette[(btaddr & 0xff) * 3 |
| 536 |
+ d->palette_sub_offset] != idata) |
| 537 |
d->need_to_redraw_whole_screen = 1; |
| 538 |
|
| 539 |
/* |
| 540 |
* Actually, the palette should only be |
| 541 |
* updated after the third write, |
| 542 |
* but this should probably work fine too: |
| 543 |
*/ |
| 544 |
d->local_rgb_palette[(btaddr & 0xff) * 3 |
| 545 |
+ d->palette_sub_offset] = idata; |
| 546 |
|
| 547 |
if (d->video_on) |
| 548 |
d->rgb_palette[(btaddr & 0xff) * 3 |
| 549 |
+ d->palette_sub_offset] = idata; |
| 550 |
} |
| 551 |
} else { |
| 552 |
if (btaddr < 0x100) |
| 553 |
odata = d->local_rgb_palette[(btaddr & 0xff) |
| 554 |
* 3 + d->palette_sub_offset]; |
| 555 |
if (!quiet_mode) |
| 556 |
debug("[ bt459: read from BT459 colormap " |
| 557 |
"0x%04x subaddr %i, value 0x%02x ]\n", |
| 558 |
btaddr, d->palette_sub_offset, (int)odata); |
| 559 |
} |
| 560 |
|
| 561 |
d->palette_sub_offset ++; |
| 562 |
if (d->palette_sub_offset >= 3) { |
| 563 |
d->palette_sub_offset = 0; |
| 564 |
|
| 565 |
d->cur_addr_lo ++; |
| 566 |
if (d->cur_addr_lo == 0) |
| 567 |
d->cur_addr_hi ++; |
| 568 |
} |
| 569 |
|
| 570 |
break; |
| 571 |
default: |
| 572 |
if (writeflag == MEM_WRITE) { |
| 573 |
debug("[ bt459: unimplemented write to address 0x%x, " |
| 574 |
"data=0x%02x ]\n", (int)relative_addr, (int)idata); |
| 575 |
} else { |
| 576 |
debug("[ bt459: unimplemented read from address " |
| 577 |
"0x%x ]\n", (int)relative_addr); |
| 578 |
} |
| 579 |
} |
| 580 |
|
| 581 |
|
| 582 |
bt459_update_cursor_position(d, old_cursor_on); |
| 583 |
|
| 584 |
if (writeflag == MEM_READ) |
| 585 |
memory_writemax64(cpu, data, len, odata); |
| 586 |
|
| 587 |
#ifdef BT459_DEBUG |
| 588 |
if (writeflag == MEM_READ) |
| 589 |
fatal("[ bt459: read from addr 0x%02x: %08x ]\n", |
| 590 |
(int)relative_addr, (int)idata); |
| 591 |
#endif |
| 592 |
|
| 593 |
return 1; |
| 594 |
} |
| 595 |
|
| 596 |
|
| 597 |
/* |
| 598 |
* dev_bt459_init(): |
| 599 |
*/ |
| 600 |
void dev_bt459_init(struct machine *machine, struct memory *mem, |
| 601 |
uint64_t baseaddr, uint64_t baseaddr_irq, struct vfb_data *vfb_data, |
| 602 |
int planes, int irq_nr, int type) |
| 603 |
{ |
| 604 |
struct bt459_data *d = malloc(sizeof(struct bt459_data)); |
| 605 |
if (d == NULL) { |
| 606 |
fprintf(stderr, "out of memory\n"); |
| 607 |
exit(1); |
| 608 |
} |
| 609 |
|
| 610 |
memset(d, 0, sizeof(struct bt459_data)); |
| 611 |
|
| 612 |
d->vfb_data = vfb_data; |
| 613 |
d->rgb_palette = vfb_data->rgb_palette; |
| 614 |
d->planes = planes; |
| 615 |
d->irq_nr = irq_nr; |
| 616 |
d->type = type; |
| 617 |
d->cursor_x = -1; |
| 618 |
d->cursor_y = -1; |
| 619 |
d->cursor_xsize = d->cursor_ysize = 0; /* anything */ |
| 620 |
d->video_on = 1; |
| 621 |
|
| 622 |
/* |
| 623 |
* These offsets are based on those mentioned in NetBSD, |
| 624 |
* and then adjusted to look good with both NetBSD and |
| 625 |
* Ultrix: |
| 626 |
*/ |
| 627 |
switch (d->type) { |
| 628 |
case BT459_PX: |
| 629 |
d->cursor_x_add = 370; |
| 630 |
d->cursor_y_add = 37; |
| 631 |
break; |
| 632 |
case BT459_BA: |
| 633 |
d->cursor_x_add = 220; |
| 634 |
d->cursor_y_add = 35; |
| 635 |
break; |
| 636 |
case BT459_BBA: |
| 637 |
if (vfb_data->xsize == 1280) { |
| 638 |
/* 1280x1024: */ |
| 639 |
d->cursor_x_add = 368; |
| 640 |
d->cursor_y_add = 38; |
| 641 |
} else { |
| 642 |
/* 1024x864: */ |
| 643 |
d->cursor_x_add = 220; |
| 644 |
d->cursor_y_add = 35; |
| 645 |
} |
| 646 |
break; |
| 647 |
} |
| 648 |
|
| 649 |
d->interrupt_time_reset_value = 500; |
| 650 |
|
| 651 |
memory_device_register(mem, "bt459", baseaddr, DEV_BT459_LENGTH, |
| 652 |
dev_bt459_access, (void *)d, DM_DEFAULT, NULL); |
| 653 |
|
| 654 |
if (baseaddr_irq != 0) |
| 655 |
memory_device_register(mem, "bt459_irq", baseaddr_irq, 0x10000, |
| 656 |
dev_bt459_irq_access, (void *)d, DM_DEFAULT, NULL); |
| 657 |
|
| 658 |
machine_add_tickfunction(machine, dev_bt459_tick, d, BT459_TICK_SHIFT); |
| 659 |
|
| 660 |
memory_device_register_statefunction(mem, d, bt459_state); |
| 661 |
} |
| 662 |
|
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