/[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 34 - (hide annotations)
Mon Oct 8 16:21:17 2007 UTC (16 years, 7 months ago) by dpavlin
File MIME type: text/plain
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++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1480 2007/02/19 01:34:42 debug Exp $
20061029	Changing usleep(1) calls in the debugger to usleep(10000)
20061107	Adding a new disk image option (-d o...) which sets the ISO9660
		filesystem base offset; also making some other hacks to allow
		NetBSD/dreamcast and homebrew demos/games to boot directly
		from a filesystem image.
		Moving Dreamcast-specific stuff in the documentation to its
		own page (dreamcast.html).
		Adding a border to the Dreamcast PVR framebuffer.
20061108	Adding a -T command line option (again?), for halting the
		emulator on unimplemented memory accesses.
20061109	Continuing on various SH4 and Dreamcast related things.
		The emulator should now halt on more unimplemented device
		accesses, instead of just printing a warning, forcing me to
		actually implement missing stuff :)
20061111	Continuing on SH4 and Dreamcast stuff.
		Adding a bogus Landisk (SH4) machine mode.
20061112	Implementing some parts of the Dreamcast GDROM device. With
		some ugly hacks, NetBSD can (barely) mount an ISO image.
20061113	NetBSD/dreamcast now starts booting from the Live CD image,
		but crashes randomly quite early on in the boot process.
20061122	Beginning on a skeleton interrupt.h and interrupt.c for the
		new interrupt subsystem.
20061124	Continuing on the new interrupt system; taking the first steps
		to attempt to connect CPUs (SuperH and MIPS) and devices
		(dev_cons and SH4 timer interrupts) to it. Many things will
		probably break from now on.
20061125	Converting dev_ns16550, dev_8253 to the new interrupt system.
		Attempting to begin to convert the ISA bus.
20061130	Incorporating a patch from Brian Foley for the configure
		script, which checks for X11 libs in /usr/X11R6/lib64 (which
		is used on some Linux systems).
20061227	Adding a note in the man page about booting from Dreamcast
		CDROM images (i.e. that no external kernel is needed).
20061229	Continuing on the interrupt system rewrite: beginning to
		convert more devices, adding abort() calls for legacy interrupt
		system calls so that everything now _has_ to be rewritten!
		Almost all machine modes are now completely broken.
20061230	More progress on removing old interrupt code, mostly related
		to the ISA bus + devices, the LCA bus (on AlphaBook1), and
		the Footbridge bus (for CATS). And some minor PCI stuff.
		Connecting the ARM cpu to the new interrupt system.
		The CATS, NetWinder, and QEMU_MIPS machine modes now work with
		the new interrupt system :)
20061231	Connecting PowerPC CPUs to the new interrupt system.
		Making PReP machines (IBM 6050) work again.
		Beginning to convert the GT PCI controller (for e.g. Malta
		and Cobalt emulation). Some things work, but not everything.
		Updating Copyright notices for 2007.
20070101	Converting dev_kn02 from legacy style to devinit; the 3max
		machine mode now works with the new interrupt system :-]
20070105	Beginning to convert the SGI O2 machine to the new interrupt
		system; finally converting O2 (IP32) devices to devinit, etc.
20070106	Continuing on the interrupt system redesign/rewrite; KN01
		(PMAX), KN230, and Dreamcast ASIC interrupts should work again,
		moving out stuff from machine.h and devices.h into the
		corresponding devices, beginning the rewrite of i80321
		interrupts, etc.
20070107	Beginning on the rewrite of Eagle interrupt stuff (PReP, etc).
20070117	Beginning the rewrite of Algor (V3) interrupts (finally
		changing dev_v3 into devinit style).
20070118	Removing the "bus" registry concept from machine.h, because
		it was practically meaningless.
		Continuing on the rewrite of Algor V3 ISA interrupts.
20070121	More work on Algor interrupts; they are now working again,
		well enough to run NetBSD/algor. :-)
20070122	Converting VR41xx (HPCmips) interrupts. NetBSD/hpcmips
		can be installed using the new interrupt system :-)
20070123	Making the testmips mode work with the new interrupt system.
20070127	Beginning to convert DEC5800 devices to devinit, and to the
		new interrupt system.
		Converting Playstation 2 devices to devinit, and converting
		the interrupt system. Also fixing a severe bug: the interrupt
		mask register on Playstation 2 is bitwise _toggled_ on writes.
20070128	Removing the dummy NetGear machine mode and the 8250 device
		(which was only used by the NetGear machine).
		Beginning to convert the MacPPC GC (Grand Central) interrupt
		controller to the new interrupt system.
		Converting Jazz interrupts (PICA61 etc.) to the new interrupt
		system. NetBSD/arc can be installed again :-)
		Fixing the JAZZ timer (hardcoding it at 100 Hz, works with
		NetBSD and it is better than a completely dummy timer as it
		was before).
		Converting dev_mp to the new interrupt system, although I
		haven't had time to actually test it yet.
		Completely removing src/machines/interrupts.c, cpu_interrupt
		and cpu_interrupt_ack in src/cpu.c, and
		src/include/machine_interrupts.h! Adding fatal error messages
		+ abort() in the few places that are left to fix.
		Converting dev_z8530 to the new interrupt system.
		FINALLY removing the md_int struct completely from the
		machine struct.
		SH4 fixes (adding a PADDR invalidation in the ITLB replacement
		code in memory_sh.c); the NetBSD/dreamcast LiveCD now runs
		all the way to the login prompt, and can be interacted with :-)
		Converting the CPC700 controller (PCI and interrupt controller
		for PM/PPC) to the new interrupt system.
20070129	Fixing MACE ISA interrupts (SGI IP32 emulation). Both NetBSD/
		sgimips' and OpenBSD/sgi's ramdisk kernels can now be
		interacted with again.
20070130	Moving out the MIPS multi_lw and _sw instruction combinations
		so that they are auto-generated at compile time instead.
20070131	Adding detection of amd64/x86_64 hosts in the configure script,
		for doing initial experiments (again :-) with native code
		generation.
		Adding a -k command line option to set the size of the dyntrans
		cache, and a -B command line option to disable native code
		generation, even if GXemul was compiled with support for
		native code generation for the specific host CPU architecture.
20070201	Experimenting with a skeleton for native code generation.
		Changing the default behaviour, so that native code generation
		is now disabled by default, and has to be enabled by using
		-b on the command line.
20070202	Continuing the native code generation experiments.
		Making PCI interrupts work for Footbridge again.
20070203	More native code generation experiments.
		Removing most of the native code generation experimental code,
		it does not make sense to include any quick hacks like this.
		Minor cleanup/removal of some more legacy MIPS interrupt code.
20070204	Making i80321 interrupts work again (for NetBSD/evbarm etc.),
		and fixing the timer at 100 Hz.
20070206	Experimenting with removing the wdc interrupt slowness hack.
20070207	Lowering the number of dyntrans TLB entries for MIPS from
		192 to 128, resulting in a minor speed improvement.
		Minor optimization to the code invalidation routine in
		cpu_dyntrans.c.
20070208	Increasing (experimentally) the nr of dyntrans instructions per
		loop from 60 to 120.
20070210	Commenting out (experimentally) the dyntrans_device_danger
		detection in memory_rw.c.
		Changing the testmips and baremips machines to use a revision 2
		MIPS64 CPU by default, instead of revision 1.
		Removing the dummy i960, IA64, x86, AVR32, and HP PA-RISC
		files, the PC bios emulation, and the Olivetti M700 (ARC) and
		db64360 emulation modes.
20070211	Adding an "mp" demo to the demos directory, which tests the
		SMP functionality of the testmips machine.
		Fixing PReP interrupts some more. NetBSD/prep now boots again.
20070216	Adding a "nop workaround" for booting Mach/PMAX to the
		documentation; thanks to Artur Bujdoso for the values.
		Converting more of the MacPPC interrupt stuff to the new
		system.
		Beginning to convert BeBox interrupts to the new system.
		PPC603e should NOT have the PPC_NO_DEC flag! Removing it.
		Correcting BeBox clock speed (it was set to 100 in the NetBSD
		bootinfo block, but should be 33000000/4), allowing NetBSD
		to start without using the (incorrect) PPC_NO_DEC hack.
20070217	Implementing (slow) AltiVec vector loads and stores, allowing
		NetBSD/macppc to finally boot using the GENERIC kernel :-)
		Updating the documentation with install instructions for
		NetBSD/macppc.
20070218-19	Regression testing for the release.

==============  RELEASE 0.4.4  ==============
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 34 * $Id: dev_sgi_mardigras.c,v 1.24 2006/12/30 13:30:59 debug Exp $
29 dpavlin 4 *
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 dpavlin 24 debug("mardigras_20400(): 0x%016"PRIx64"\n", (uint64_t) idata);
209 dpavlin 4 }
210    
211    
212     /*
213     * dev_sgi_mardigras_access():
214     */
215 dpavlin 22 DEVICE_ACCESS(sgi_mardigras)
216 dpavlin 4 {
217     uint64_t idata = 0, odata = 0;
218     struct sgi_mardigras_data *d = extra;
219     int i;
220    
221 dpavlin 18 if (writeflag == MEM_WRITE)
222     idata = memory_readmax64(cpu, data, len);
223 dpavlin 4
224     /* Accessing the microcode_ram works like ordinary ram: */
225     if (relative_addr >= MICROCODE_START &&
226     relative_addr < MICROCODE_END) {
227     relative_addr -= MICROCODE_START;
228     if (writeflag == MEM_WRITE)
229     memcpy(d->microcode_ram + relative_addr, data, len);
230     else
231     memcpy(data, d->microcode_ram + relative_addr, len);
232     return 1;
233     }
234    
235     switch (relative_addr) {
236     case 0x00004:
237     /* xtalk data: (according to Linux/IP30) */
238     /* (mfgr & 0x7ff) << 1 */
239     /* (part & 0xffff) << 12 */
240     /* (rev & 0xf) << 28 */
241     odata = (2 << 28) | (0xc003 << 12) | (0x2aa << 1);
242     break;
243     case 0x20008: /* Fifo status */
244     break;
245     case 0x20200:
246     break;
247     case 0x20400:
248     if (writeflag == MEM_WRITE)
249     mardigras_20400(cpu, d, idata);
250     else
251     debug("[ sgi_mardigras: read from 0x20400? ]\n");
252     break;
253     case 0x58040:
254     /* HQ4 microcode stuff */
255     break;
256     case 0x70c30:
257     /* Palette register select? */
258     if (writeflag == MEM_WRITE)
259     d->palette_reg_select = idata;
260     else
261     odata = d->palette_reg_select;
262     break;
263     case 0x70d18:
264     /* Palette register read/write? */
265     i = 3 * ((d->palette_reg_select >> 8) & 0xff);
266     if (writeflag == MEM_WRITE) {
267     d->fb->rgb_palette[i + 0] = (idata >> 24) & 0xff;
268     d->fb->rgb_palette[i + 1] = (idata >> 16) & 0xff;
269     d->fb->rgb_palette[i + 2] = (idata >> 8) & 0xff;
270     } else {
271     odata = (d->fb->rgb_palette[i+0] << 24) +
272     (d->fb->rgb_palette[i+1] << 16) +
273     (d->fb->rgb_palette[i+2] << 8);
274     }
275     break;
276     case 0x71208:
277     odata = 8;
278     break;
279     default:
280     if (writeflag==MEM_READ) {
281     debug("[ sgi_mardigras: read from 0x%08lx ]\n",
282     (long)relative_addr);
283     } else {
284 dpavlin 24 debug("[ sgi_mardigras: write to 0x%08lx: 0x%016"PRIx64
285     " ]\n", (long) relative_addr, (uint64_t) idata);
286 dpavlin 4 }
287     }
288    
289     if (writeflag == MEM_READ)
290     memory_writemax64(cpu, data, len, odata);
291    
292     return 1;
293     }
294    
295    
296 dpavlin 22 DEVINIT(sgi_mardigras)
297 dpavlin 4 {
298     struct sgi_mardigras_data *d;
299    
300     d = malloc(sizeof(struct sgi_mardigras_data));
301     if (d == NULL) {
302     fprintf(stderr, "out of memory\n");
303     exit(1);
304     }
305     memset(d, 0, sizeof(struct sgi_mardigras_data));
306    
307     d->fb = dev_fb_init(devinit->machine, devinit->machine->memory,
308     MARDIGRAS_FAKE_OFFSET, VFB_GENERIC,
309     mardigras_xsize, mardigras_ysize,
310 dpavlin 12 mardigras_xsize, mardigras_ysize, 24, "SGI MardiGras");
311 dpavlin 4 if (d->fb == NULL) {
312     fprintf(stderr, "dev_sgi_mardigras_init(): out of memory\n");
313     exit(1);
314     }
315    
316     memory_device_register(devinit->machine->memory, devinit->name,
317     devinit->addr, DEV_SGI_MARDIGRAS_LENGTH, dev_sgi_mardigras_access,
318 dpavlin 20 d, DM_DEFAULT, NULL);
319 dpavlin 4
320     return 1;
321     }
322    
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