/[gxemul]/trunk/src/devices/dev_sgi_mardigras.c
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Contents of /trunk/src/devices/dev_sgi_mardigras.c

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Revision 18 - (show annotations)
Mon Oct 8 16:19:11 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 8675 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1004 2005/10/27 14:01:10 debug Exp $
20051011        Passing -A as the default boot arg for CATS (works fine with
                OpenBSD/cats).
20051012	Fixing the VGA cursor offset bug, and speeding up framebuffer
		redraws if character cells contain the same thing as during
		the last redraw.
20051013	Adding a slow strd ARM instruction hack.
20051017	Minor updates: Adding a dummy i80321 Verde controller (for
		XScale emulation), fixing the disassembly of the ARM "ldrd"
		instruction, adding "support" for less-than-4KB pages for ARM
		(by not adding them to translation tables).
20051020	Continuing on some HPCarm stuff. A NetBSD/hpcarm kernel prints
		some boot messages on an emulated Jornada 720.
		Making dev_ram work better with dyntrans (speeds up some things
		quite a bit).
20051021	Automatically generating some of the most common ARM load/store
		multiple instructions.
20051022	Better statistics gathering for the ARM load/store multiple.
		Various other dyntrans and device updates.
20051023	Various minor updates.
20051024	Continuing; minor device and dyntrans fine-tuning. Adding the
		first "reasonable" instruction combination hacks for ARM (the
		cores of NetBSD/cats' memset and memcpy).
20051025	Fixing a dyntrans-related bug in dev_vga. Also changing the
		dyntrans low/high access notification to only be updated on
		writes, not reads. Hopefully it will be enough. (dev_vga in
		charcell mode now seems to work correctly with both reads and
		writes.)
		Experimenting with gathering dyntrans statistics (which parts
		of emulated RAM that are actually executed), and adding
		instruction combination hacks for cache cleaning and a part of
		NetBSD's scanc() function.
20051026	Adding a bitmap for ARM emulation which indicates if a page is
		(specifically) user accessible; loads and stores with the t-
		flag set can now use the translation arrays, which results in
		a measurable speedup.
20051027	Dyntrans updates; adding an extra bitmap array for 32-bit
		emulation modes, speeding up the check whether a physical page
		has any code translations or not (O(n) -> O(1)). Doing a
		similar reduction of O(n) to O(1) by avoiding the scan through
		the translation entries on a translation update (32-bit mode
		only).
		Various other minor hacks.
20051029	Quick release, without any testing at all.

==============  RELEASE 0.3.6.2  ==============
1 /*
2 * Copyright (C) 2003-2005 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * 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
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: dev_sgi_mardigras.c,v 1.19 2005/10/26 14:37:04 debug Exp $
29 *
30 * "MardiGras" graphics controller on SGI IP30 (Octane).
31 *
32 * Most of this is just guesses based on the behaviour of Linux/Octane.
33 *
34 * TODO
35 */
36
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40
41 #include "cpu.h"
42 #include "device.h"
43 #include "devices.h"
44 #include "memory.h"
45 #include "machine.h"
46 #include "misc.h"
47
48
49 #define debug fatal
50
51
52 #define DEV_SGI_MARDIGRAS_LENGTH 0x800000
53
54 #define MARDIGRAS_FAKE_OFFSET 0x500000000ULL /* hopefully available */
55 #define MARDIGRAS_DEFAULT_XSIZE 1280
56 #define MARDIGRAS_DEFAULT_YSIZE 1024
57
58 #define MICROCODE_START 0x50000
59 #define MICROCODE_END 0x55000
60
61 static int mardigras_xsize = MARDIGRAS_DEFAULT_XSIZE;
62 static int mardigras_ysize = MARDIGRAS_DEFAULT_YSIZE;
63
64 struct sgi_mardigras_data {
65 struct vfb_data *fb;
66 unsigned char microcode_ram[MICROCODE_END - MICROCODE_START];
67 uint64_t palette_reg_select;
68 int currentx;
69 int currenty;
70 int color;
71 int startx;
72 int starty;
73 int stopx;
74 int stopy;
75 uint64_t draw_mode;
76 };
77
78
79 /*
80 * mardigras_20400():
81 */
82 void mardigras_20400(struct cpu *cpu, struct sgi_mardigras_data *d,
83 uint64_t idata)
84 {
85 int i, x, y, r,g,b, len, addr;
86 unsigned char pixels[3 * 8000];
87
88 /* Get rgb from palette: */
89 r = d->fb->rgb_palette[d->color * 3 + 0];
90 g = d->fb->rgb_palette[d->color * 3 + 1];
91 b = d->fb->rgb_palette[d->color * 3 + 2];
92
93 /* Set color: */
94 if ((idata & 0x00ffffff00000000ULL) == 0x00185C0400000000ULL) {
95 int color = (idata >> 12) & 0xff;
96 d->color = color;
97 return;
98 }
99
100 /* Set start XY: */
101 if ((idata & 0x00ffffff00000000ULL) == 0x0018460400000000ULL) {
102 d->startx = (idata >> 16) & 0xffff;
103 d->starty = idata & 0xffff;
104 if (d->startx >= mardigras_xsize)
105 d->startx = 0;
106 if (d->starty >= mardigras_ysize)
107 d->starty = 0;
108 d->currentx = d->startx;
109 d->currenty = d->starty;
110 return;
111 }
112
113 /* Set stop XY: */
114 if ((idata & 0x00ffffff00000000ULL) == 0x0018470400000000ULL) {
115 d->stopx = (idata >> 16) & 0xffff;
116 d->stopy = idata & 0xffff;
117 if (d->stopx >= mardigras_xsize)
118 d->stopx = 0;
119 if (d->stopy >= mardigras_ysize)
120 d->stopy = 0;
121 return;
122 }
123
124 /* Draw modes: (Rectangle or Bitmap, respectively) */
125 if (idata == 0x0019100400018000ULL ||
126 idata == 0x0019100400418008ULL) {
127 d->draw_mode = idata;
128 return;
129 }
130
131 /* Send command: */
132 if (idata == 0x001C130400000018ULL) {
133 switch (d->draw_mode) {
134 /* Rectangle: */
135 case 0x0019100400018000ULL:
136 /* Fill pixels[] with pixels: */
137 len = 0;
138 for (x=d->startx; x<=d->stopx; x++) {
139 pixels[len + 0] = r;
140 pixels[len + 1] = g;
141 pixels[len + 2] = b;
142 len += 3;
143 }
144 if (len == 0)
145 break;
146 for (y=d->starty; y<=d->stopy; y++) {
147 addr = (mardigras_xsize * (mardigras_ysize -
148 1 - y) + d->startx) * 3;
149 /* printf("addr = %i\n", addr); */
150
151 /* Write a line: */
152 dev_fb_access(cpu, cpu->mem,
153 addr, pixels, len, MEM_WRITE, d->fb);
154 }
155 break;
156 /* Bitmap: */
157 case 0x0019100400418008ULL:
158 break;
159 default:
160 fatal("[ sgi_mardigras: unknown draw mode ]\n");
161 }
162 return;
163 }
164
165 /* Send a line of bitmap data: */
166 if ((idata & 0x00ffffff00000000ULL) == 0x001C700400000000ULL) {
167 addr = (mardigras_xsize * (mardigras_ysize - 1 - d->currenty)
168 + d->currentx) * 3;
169 /*
170 printf("addr=%08x curx,y=%4i,%4i startx,y=%4i,%4i "
171 "stopx,y=%4i,%4i\n", addr, d->currentx, d->currenty,
172 d->startx, d->starty, d->stopx, d->stopy);
173 */
174 len = 8*3;
175
176 if (addr > mardigras_xsize * mardigras_ysize * 3 || addr < 0)
177 return;
178
179 /* Read a line: */
180 dev_fb_access(cpu, cpu->mem,
181 addr, pixels, len, MEM_READ, d->fb);
182
183 i = 0;
184 while (i < 8) {
185 if ((idata >> (24 + (7-i))) & 1) {
186 pixels[i*3 + 0] = r;
187 pixels[i*3 + 1] = g;
188 pixels[i*3 + 2] = b;
189 }
190 i ++;
191
192 d->currentx ++;
193 if (d->currentx > d->stopx) {
194 d->currentx = d->startx;
195 d->currenty ++;
196 if (d->currenty > d->stopy)
197 d->currenty = d->starty;
198 }
199 }
200
201 /* Write a line: */
202 dev_fb_access(cpu, cpu->mem,
203 addr, pixels, len, MEM_WRITE, d->fb);
204
205 return;
206 }
207
208 debug("mardigras_20400(): 0x%016llx\n", (long long)idata);
209 }
210
211
212 /*
213 * dev_sgi_mardigras_access():
214 */
215 int dev_sgi_mardigras_access(struct cpu *cpu, struct memory *mem,
216 uint64_t relative_addr, unsigned char *data, size_t len,
217 int writeflag, void *extra)
218 {
219 uint64_t idata = 0, odata = 0;
220 struct sgi_mardigras_data *d = extra;
221 int i;
222
223 if (writeflag == MEM_WRITE)
224 idata = memory_readmax64(cpu, data, len);
225
226 /* Accessing the microcode_ram works like ordinary ram: */
227 if (relative_addr >= MICROCODE_START &&
228 relative_addr < MICROCODE_END) {
229 relative_addr -= MICROCODE_START;
230 if (writeflag == MEM_WRITE)
231 memcpy(d->microcode_ram + relative_addr, data, len);
232 else
233 memcpy(data, d->microcode_ram + relative_addr, len);
234 return 1;
235 }
236
237 switch (relative_addr) {
238 case 0x00004:
239 /* xtalk data: (according to Linux/IP30) */
240 /* (mfgr & 0x7ff) << 1 */
241 /* (part & 0xffff) << 12 */
242 /* (rev & 0xf) << 28 */
243 odata = (2 << 28) | (0xc003 << 12) | (0x2aa << 1);
244 break;
245 case 0x20008: /* Fifo status */
246 break;
247 case 0x20200:
248 break;
249 case 0x20400:
250 if (writeflag == MEM_WRITE)
251 mardigras_20400(cpu, d, idata);
252 else
253 debug("[ sgi_mardigras: read from 0x20400? ]\n");
254 break;
255 case 0x58040:
256 /* HQ4 microcode stuff */
257 break;
258 case 0x70c30:
259 /* Palette register select? */
260 if (writeflag == MEM_WRITE)
261 d->palette_reg_select = idata;
262 else
263 odata = d->palette_reg_select;
264 break;
265 case 0x70d18:
266 /* Palette register read/write? */
267 i = 3 * ((d->palette_reg_select >> 8) & 0xff);
268 if (writeflag == MEM_WRITE) {
269 d->fb->rgb_palette[i + 0] = (idata >> 24) & 0xff;
270 d->fb->rgb_palette[i + 1] = (idata >> 16) & 0xff;
271 d->fb->rgb_palette[i + 2] = (idata >> 8) & 0xff;
272 } else {
273 odata = (d->fb->rgb_palette[i+0] << 24) +
274 (d->fb->rgb_palette[i+1] << 16) +
275 (d->fb->rgb_palette[i+2] << 8);
276 }
277 break;
278 case 0x71208:
279 odata = 8;
280 break;
281 default:
282 if (writeflag==MEM_READ) {
283 debug("[ sgi_mardigras: read from 0x%08lx ]\n",
284 (long)relative_addr);
285 } else {
286 debug("[ sgi_mardigras: write to 0x%08lx: 0x%016llx"
287 " ]\n", (long)relative_addr, (long long)idata);
288 }
289 }
290
291 if (writeflag == MEM_READ)
292 memory_writemax64(cpu, data, len, odata);
293
294 return 1;
295 }
296
297
298 /*
299 * devinit_sgi_mardigras():
300 */
301 int devinit_sgi_mardigras(struct devinit *devinit)
302 {
303 struct sgi_mardigras_data *d;
304
305 d = malloc(sizeof(struct sgi_mardigras_data));
306 if (d == NULL) {
307 fprintf(stderr, "out of memory\n");
308 exit(1);
309 }
310 memset(d, 0, sizeof(struct sgi_mardigras_data));
311
312 d->fb = dev_fb_init(devinit->machine, devinit->machine->memory,
313 MARDIGRAS_FAKE_OFFSET, VFB_GENERIC,
314 mardigras_xsize, mardigras_ysize,
315 mardigras_xsize, mardigras_ysize, 24, "SGI MardiGras");
316 if (d->fb == NULL) {
317 fprintf(stderr, "dev_sgi_mardigras_init(): out of memory\n");
318 exit(1);
319 }
320
321 memory_device_register(devinit->machine->memory, devinit->name,
322 devinit->addr, DEV_SGI_MARDIGRAS_LENGTH, dev_sgi_mardigras_access,
323 d, MEM_DEFAULT, NULL);
324
325 return 1;
326 }
327
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