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

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Revision 42 - (hide annotations)
Mon Oct 8 16:22:32 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 8419 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1613 2007/06/15 20:11:26 debug Exp $
20070501	Continuing a little on m88k disassembly (control registers,
		more instructions).
		Adding a dummy mvme88k machine mode.
20070502	Re-adding MIPS load/store alignment exceptions.
20070503	Implementing more of the M88K disassembly code.
20070504	Adding disassembly of some more M88K load/store instructions.
		Implementing some relatively simple M88K instructions (br.n,
		xor[.u] imm, and[.u] imm).
20070505	Implementing M88K three-register and, or, xor, and jmp[.n],
		bsr[.n] including function call trace stuff.
		Applying a patch from Bruce M. Simpson which implements the
		SYSCON_BOARD_CPU_CLOCK_FREQ_ID object of the syscon call in
		the yamon PROM emulation.
20070506	Implementing M88K bb0[.n] and bb1[.n], and skeletons for
		ldcr and stcr (although no control regs are implemented yet).
20070509	Found and fixed the bug which caused Linux for QEMU_MIPS to
		stop working in 0.4.5.1: It was a faulty change to the MIPS
		'sc' and 'scd' instructions I made while going through gcc -W
		warnings on 20070428.
20070510	Updating the Linux/QEMU_MIPS section in guestoses.html to
		use mips-test-0.2.tar.gz instead of 0.1.
		A big thank you to Miod Vallat for sending me M88K manuals.
		Implementing more M88K instructions (addu, subu, div[u], mulu,
		ext[u], clr, set, cmp).
20070511	Fixing bugs in the M88K "and" and "and.u" instructions (found
		by comparing against the manual).
		Implementing more M88K instructions (mask[.u], mak, bcnd (auto-
		generated)) and some more control register details.
		Cleanup: Removing the experimental AVR emulation mode and
		corresponding devices; AVR emulation wasn't really meaningful.
		Implementing autogeneration of most M88K loads/stores. The
		rectangle drawing demo (with -O0) for M88K runs :-)
		Beginning on M88K exception handling.
		More M88K instructions: tb0, tb1, rte, sub, jsr[.n].
		Adding some skeleton MVME PROM ("BUG") emulation.
20070512	Fixing a bug in the M88K cmp instruction.
		Adding the M88K lda (scaled register) instruction.
		Fixing bugs in 64-bit (32-bit pairs) M88K loads/stores.
		Removing the unused tick_hz stuff from the machine struct.
		Implementing the M88K xmem instruction. OpenBSD/mvme88k gets
		far enough to display the Copyright banner :-)
		Implementing subu.co (guess), addu.co, addu.ci, ff0, and ff1.
		Adding a dev_mvme187, for MVME187-specific devices/registers.
		OpenBSD/mvme88k prints more boot messages. :)
20070515	Continuing on MVME187 emulation (adding more devices, beginning
		on the CMMUs, etc).
		Adding the M88K and.c, xor.c, and or.c instructions, and making
		sure that mul, div, etc cause exceptions if executed when SFD1
		is disabled.
20070517	Continuing on M88K and MVME187 emulation in general; moving
		the CMMU registers to the CPU struct, separating dev_pcc2 from
		dev_mvme187, and beginning on memory_m88k.c (BATC and PATC).
		Fixing a bug in 64-bit (32-bit pairs) M88K fast stores.
		Implementing the clock part of dev_mk48txx.
		Implementing the M88K fstcr and xcr instructions.
		Implementing m88k_cpu_tlbdump().
		Beginning on the implementation of a separate address space
		for M88K .usr loads/stores.
20070520	Removing the non-working (skeleton) Sandpoint, SonyNEWS, SHARK
		Dnard, and Zaurus machine modes.
		Experimenting with dyntrans to_be_translated read-ahead. It
		seems to give a very small performance increase for MIPS
		emulation, but a large performance degradation for SuperH. Hm.
20070522	Disabling correct SuperH ITLB emulation; it does not seem to be
		necessary in order to let SH4 guest OSes run, and it slows down
		userspace code.
		Implementing "samepage" branches for SuperH emulation, and some
		other minor speed hacks.
20070525	Continuing on M88K memory-related stuff: exceptions, memory
		transaction register contents, etc.
		Implementing the M88K subu.ci instruction.
		Removing the non-working (skeleton) Iyonix machine mode.
		OpenBSD/mvme88k reaches userland :-), starts executing
		/sbin/init's instructions, and issues a few syscalls, before
		crashing.
20070526	Fixing bugs in dev_mk48txx, so that OpenBSD/mvme88k detects
		the correct time-of-day.
		Implementing a generic IRQ controller for the test machines
		(dev_irqc), similar to a proposed patch from Petr Stepan.
		Experimenting some more with translation read-ahead.
		Adding an "expect" script for automated OpenBSD/landisk
		install regression/performance tests.
20070527	Adding a dummy mmEye (SH3) machine mode skeleton.
		FINALLY found the strange M88K bug I have been hunting: I had
		not emulated the SNIP value for exceptions occurring in
		branch delay slots correctly.
		Implementing correct exceptions for 64-bit M88K loads/stores.
		Address to symbol lookups are now disabled when M88K is
		running in usermode (because usermode addresses don't have
		anything to do with supervisor addresses).
20070531	Removing the mmEye machine mode skeleton.
20070604	Some minor code cleanup.
20070605	Moving src/useremul.c into a subdir (src/useremul/), and
		cleaning up some more legacy constructs.
		Adding -Wstrict-aliasing and -fstrict-aliasing detection to
		the configure script.
20070606	Adding a check for broken GCC on Solaris to the configure
		script. (GCC 3.4.3 on Solaris cannot handle static variables
		which are initialized to 0 or NULL. :-/)
		Removing the old (non-working) ARC emulation modes: NEC RD94,
		R94, R96, and R98, and the last traces of Olivetti M700 and
		Deskstation Tyne.
		Removing the non-working skeleton WDSC device (dev_wdsc).
20070607	Thinking about how to use the host's cc + ld at runtime to
		generate native code. (See experiments/native_cc_ld_test.i
		for an example.)
20070608	Adding a program counter sampling timer, which could be useful
		for native code generation experiments.
		The KN02_CSR_NRMMOD bit in the DECstation 5000/200 (KN02) CSR
		should always be set, to allow a 5000/200 PROM to boot.
20070609	Moving out breakpoint details from the machine struct into
		a helper struct, and removing the limit on max nr of
		breakpoints.
20070610	Moving out tick functions into a helper struct as well (which
		also gets rid of the max limit).
20070612	FINALLY figured out why Debian/DECstation stopped working when
		translation read-ahead was enabled: in src/memory_rw.c, the
		call to invalidate_code_translation was made also if the
		memory access was an instruction load (if the page was mapped
		as writable); it shouldn't be called in that case.
20070613	Implementing some more MIPS32/64 revision 2 instructions: di,
		ei, ext, dext, dextm, dextu, and ins.
20070614	Implementing an instruction combination for the NetBSD/arm
		idle loop (making the host not use any cpu if NetBSD/arm
		inside the emulator is not using any cpu).
		Increasing the nr of ARM VPH entries from 128 to 384.
20070615	Removing the ENABLE_arch stuff from the configure script, so
		that all included architectures are included in both release
		and development builds.
		Moving memory related helper functions from misc.c to memory.c.
		Adding preliminary instructions for netbooting NetBSD/pmppc to
		guestoses.html; it doesn't work yet, there are weird timeouts.
		Beginning a total rewrite of the userland emulation modes
		(removing all emulation modes, beginning from scratch with
		NetBSD/MIPS and FreeBSD/Alpha only).
20070616	After fixing a bug in the DEC21143 NIC (the TDSTAT_OWN bit was
		only cleared for the last segment when transmitting, not all
		segments), NetBSD/pmppc boots with root-on-nfs without the
		timeouts. Updating guestoses.html.
		Removing the skeleton PSP (Playstation Portable) mode.
		Moving X11-related stuff in the machine struct into a helper
		struct.
		Cleanup of out-of-memory checks, to use a new CHECK_ALLOCATION
		macro (which prints a meaningful error message).
		Adding a COMMENT to each machine and device (for automagic
		.index comment generation).
		Doing regression testing for the next release.

==============  RELEASE 0.4.6  ==============
1 dpavlin 4 /*
2 dpavlin 34 * Copyright (C) 2003-2007 Anders Gavare. All rights reserved.
3 dpavlin 4 *
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 dpavlin 42 * $Id: dev_sgi_mardigras.c,v 1.25 2007/06/15 19:57:34 debug Exp $
29 dpavlin 4 *
30 dpavlin 42 * COMMENT: MardiGras graphics controller on SGI IP30 (Octane)
31 dpavlin 4 *
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 dpavlin 24 debug("mardigras_20400(): 0x%016"PRIx64"\n", (uint64_t) idata);
209 dpavlin 4 }
210    
211    
212 dpavlin 22 DEVICE_ACCESS(sgi_mardigras)
213 dpavlin 4 {
214     uint64_t idata = 0, odata = 0;
215     struct sgi_mardigras_data *d = extra;
216     int i;
217    
218 dpavlin 18 if (writeflag == MEM_WRITE)
219     idata = memory_readmax64(cpu, data, len);
220 dpavlin 4
221     /* Accessing the microcode_ram works like ordinary ram: */
222     if (relative_addr >= MICROCODE_START &&
223     relative_addr < MICROCODE_END) {
224     relative_addr -= MICROCODE_START;
225     if (writeflag == MEM_WRITE)
226     memcpy(d->microcode_ram + relative_addr, data, len);
227     else
228     memcpy(data, d->microcode_ram + relative_addr, len);
229     return 1;
230     }
231    
232     switch (relative_addr) {
233 dpavlin 42
234 dpavlin 4 case 0x00004:
235     /* xtalk data: (according to Linux/IP30) */
236     /* (mfgr & 0x7ff) << 1 */
237     /* (part & 0xffff) << 12 */
238     /* (rev & 0xf) << 28 */
239     odata = (2 << 28) | (0xc003 << 12) | (0x2aa << 1);
240     break;
241 dpavlin 42
242 dpavlin 4 case 0x20008: /* Fifo status */
243     break;
244 dpavlin 42
245 dpavlin 4 case 0x20200:
246     break;
247 dpavlin 42
248 dpavlin 4 case 0x20400:
249     if (writeflag == MEM_WRITE)
250     mardigras_20400(cpu, d, idata);
251     else
252     debug("[ sgi_mardigras: read from 0x20400? ]\n");
253     break;
254 dpavlin 42
255 dpavlin 4 case 0x58040:
256     /* HQ4 microcode stuff */
257     break;
258 dpavlin 42
259 dpavlin 4 case 0x70c30:
260     /* Palette register select? */
261     if (writeflag == MEM_WRITE)
262     d->palette_reg_select = idata;
263     else
264     odata = d->palette_reg_select;
265     break;
266 dpavlin 42
267 dpavlin 4 case 0x70d18:
268     /* Palette register read/write? */
269     i = 3 * ((d->palette_reg_select >> 8) & 0xff);
270     if (writeflag == MEM_WRITE) {
271     d->fb->rgb_palette[i + 0] = (idata >> 24) & 0xff;
272     d->fb->rgb_palette[i + 1] = (idata >> 16) & 0xff;
273     d->fb->rgb_palette[i + 2] = (idata >> 8) & 0xff;
274     } else {
275     odata = (d->fb->rgb_palette[i+0] << 24) +
276     (d->fb->rgb_palette[i+1] << 16) +
277     (d->fb->rgb_palette[i+2] << 8);
278     }
279     break;
280 dpavlin 42
281 dpavlin 4 case 0x71208:
282     odata = 8;
283     break;
284 dpavlin 42
285 dpavlin 4 default:
286     if (writeflag==MEM_READ) {
287     debug("[ sgi_mardigras: read from 0x%08lx ]\n",
288     (long)relative_addr);
289     } else {
290 dpavlin 24 debug("[ sgi_mardigras: write to 0x%08lx: 0x%016"PRIx64
291     " ]\n", (long) relative_addr, (uint64_t) idata);
292 dpavlin 4 }
293     }
294    
295     if (writeflag == MEM_READ)
296     memory_writemax64(cpu, data, len, odata);
297    
298     return 1;
299     }
300    
301    
302 dpavlin 22 DEVINIT(sgi_mardigras)
303 dpavlin 4 {
304     struct sgi_mardigras_data *d;
305    
306 dpavlin 42 CHECK_ALLOCATION(d = malloc(sizeof(struct sgi_mardigras_data)));
307 dpavlin 4 memset(d, 0, sizeof(struct sgi_mardigras_data));
308    
309     d->fb = dev_fb_init(devinit->machine, devinit->machine->memory,
310     MARDIGRAS_FAKE_OFFSET, VFB_GENERIC,
311     mardigras_xsize, mardigras_ysize,
312 dpavlin 12 mardigras_xsize, mardigras_ysize, 24, "SGI MardiGras");
313 dpavlin 4 if (d->fb == NULL) {
314     fprintf(stderr, "dev_sgi_mardigras_init(): out of memory\n");
315     exit(1);
316     }
317    
318     memory_device_register(devinit->machine->memory, devinit->name,
319     devinit->addr, DEV_SGI_MARDIGRAS_LENGTH, dev_sgi_mardigras_access,
320 dpavlin 20 d, DM_DEFAULT, NULL);
321 dpavlin 4
322     return 1;
323     }
324    
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