/[gxemul]/trunk/src/devices/dev_dec21030.c
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Annotation of /trunk/src/devices/dev_dec21030.c

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Mon Oct 8 16:19:37 2007 UTC (16 years, 7 months ago) by dpavlin
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++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1121 2006/02/18 21:03:08 debug Exp $
20051126	Cobalt and PReP now work with the 21143 NIC.
		Continuing on Alpha dyntrans things.
		Fixing some more left-shift-by-24 to unsigned.
20051127	Working on OpenFirmware emulation; major cleanup/redesign.
		Progress on MacPPC emulation: NetBSD detects two CPUs (when
		running with -n 2), framebuffer output (for text) works.
		Adding quick-hack Bandit PCI controller and "gc" interrupt
		controller for MacPPC.
20051128	Changing from a Bandit to a Uni-North controller for macppc.
		Continuing on OpenFirmware and MacPPC emulation in general
		(obio controller, and wdc attached to the obio seems to work).
20051129	More work on MacPPC emulation (adding a dummy ADB controller).
		Continuing the PCI bus cleanup (endianness and tag composition)
		and rewriting all PCI controllers' access functions.
20051130	Various minor PPC dyntrans optimizations.
		Manually inlining some parts of the framebuffer redraw routine.
		Slowly beginning the conversion of the old MIPS emulation into
		dyntrans (but this will take quite some time to get right).
		Generalizing quick_pc_to_pointers.
20051201	Documentation update (David Muse has made available a kernel
		which simplifies Debian/DECstation installation).
		Continuing on the ADB bus controller.
20051202	Beginning a rewrite of the Zilog serial controller (dev_zs).
20051203	Continuing on the zs rewrite (now called dev_z8530); conversion
		to devinit style.
		Reworking some of the input-only vs output-only vs input-output
		details of src/console.c, better warning messages, and adding
		a debug dump.
		Removing the concept of "device state"; it wasn't really used.
		Changing some debug output (-vv should now be used to show all
		details about devices and busses; not shown during normal
		startup anymore).
		Beginning on some SPARC instruction disassembly support.
20051204	Minor PPC updates (WALNUT skeleton stuff).
		Continuing on the MIPS dyntrans rewrite.
		More progress on the ADB controller (a keyboard is "detected"
		by NetBSD and OpenBSD).
		Downgrading OpenBSD/arc as a guest OS from "working" to
		"almost working" in the documentation.
		Progress on Algor emulation ("v3" PCI controller).
20051205	Minor updates.
20051207	Sorting devices according to address; this reduces complexity
		of device lookups from O(n) to O(log n) in memory_rw (but no
		real performance increase (yet) in experiments).
20051210	Beginning the work on native dyntrans backends (by making a
		simple skeleton; so far only for Alpha hosts).
20051211	Some very minor SPARC updates.
20051215	Fixing a bug in the MIPS mul (note: not mult) instruction,
		so it also works with non-64-bit emulation. (Thanks to Alec
		Voropay for noticing the problem.)
20051216	More work on the fake/empty/simple/skeleton/whatever backend;
		performance doesn't increase, so this isn't really worth it,
		but it was probably worth it to prepare for a real backend
		later.
20051219	More instr call statistics gathering and analysis stuff.
20051220	Another fix for MIPS 'mul'. Also converting mul and {d,}cl{o,z}
		to dyntrans.
		memory_ppc.c syntax error fix (noticed by Peter Valchev).
		Beginning to move out machines from src/machine.c into
		individual files in src/machines (in a way similar to the
		autodev system for devices).
20051222	Updating the documentation regarding NetBSD/pmax 3.0.
20051223	- " - NetBSD/cats 3.0.
20051225	- " - NetBSD/hpcmips 3.0.
20051226	Continuing on the machine registry redesign.
		Adding support for ARM rrx (33-bit rotate).
		Fixing some signed/unsigned issues (exposed by gcc -W).
20051227	Fixing the bug which prevented a NetBSD/prep 3.0 install kernel
		from starting (triggered when an mtmsr was the last instruction
		on a page). Unfortunately not enough to get the kernel to run
		as well as the 2.1 kernels did.
20051230	Some dyntrans refactoring.
20051231	Continuing on the machine registry redesign.
20060101-10	Continuing... moving more machines. Moving MD interrupt stuff
		from machine.c into a new src/machines/interrupts.c.
20060114	Adding various mvmeppc machine skeletons.
20060115	Continuing on mvme* stuff. NetBSD/mvmeppc prints boot messages
		(for MVME1600) and reaches the root device prompt, but no
		specific hardware devices are emulated yet.
20060116	Minor updates to the mvme1600 emulation mode; the Eagle PCI bus
		seems to work without much modification, and a 21143 can be
		detected, interrupts might work (but untested so far).
		Adding a fake MK48Txx (mkclock) device, for NetBSD/mvmeppc.
20060121	Adding an aux control register for ARM. (A BIG thank you to
		Olivier Houchard for tracking down this bug.)
20060122	Adding more ARM instructions (smulXY), and dev_iq80321_7seg.
20060124	Adding disassembly of more ARM instructions (mia*, mra/mar),
		and some semi-bogus XScale and i80321 registers.
20060201-02	Various minor updates. Moving the last machines out of
		machine.c.
20060204	Adding a -c command line option, for running debugger commands
		before the simulation starts, but after all files have been
		loaded.
		Minor iq80321-related updates.
20060209	Minor hacks (DEVINIT macro, etc).
		Preparing for the generalization of the 64-bit dyntrans address
		translation subsystem.
20060216	Adding ARM ldrd (double-register load).
20060217	Continuing on various ARM-related stuff.
20060218	More progress on the ATA/wdc emulation for NetBSD/iq80321.
		NetBSD/evbarm can now be installed :-)  Updating the docs, etc.
		Continuing on Algor emulation.

==============  RELEASE 0.3.8  ==============


1 dpavlin 20 /*
2 dpavlin 22 * Copyright (C) 2004-2006 Anders Gavare. All rights reserved.
3 dpavlin 20 *
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 22 * $Id: dev_dec21030.c,v 1.5 2006/02/09 20:02:59 debug Exp $
29 dpavlin 20 *
30     * DEC 21030 "tga" graphics.
31     *
32     * Resolutions that seem to be possible: 640x480, 1024x768, 1280x1024.
33     * 8 bits, perhaps others? (24 bit?)
34     *
35     * NetBSD should say something like this:
36     *
37     * tga0 at pci0 dev 12 function 0: TGA2 pass 2, board type T8-02
38     * tga0: 1280 x 1024, 8bpp, Bt485 RAMDAC
39     *
40     * See netbsd/src/sys/dev/pci/tga.c for more info.
41     * tga_rop_vtov() for video-to-video copy (scrolling and fast
42     * erasing)
43     *
44     * TODO: This device is far from complete.
45     * The RAMDAC is non-existant.
46     *
47     * TODO: all fb device writes with direct writes to the framebuffer
48     * memory, and update the x1,y1,x2,y2 coordinates instead.
49     * That will give better performance.
50     */
51    
52     #include <stdio.h>
53     #include <stdlib.h>
54     #include <string.h>
55    
56     #include "device.h"
57     #include "devices.h"
58     #include "machine.h"
59     #include "memory.h"
60     #include "misc.h"
61    
62     #include "tgareg.h"
63    
64     #define MAX_XSIZE 2048
65    
66     #if 1
67     int dec21030_default_xsize = 640;
68     int dec21030_default_ysize = 480;
69     #else
70     int dec21030_default_xsize = 1024;
71     int dec21030_default_ysize = 768;
72     #endif
73    
74    
75     /* TODO: Ugly hack: this causes the framebuffer to be in memory */
76     #define FRAMEBUFFER_PADDR 0x4000000000ULL
77     #define FRAMEBUFFER_BASE 0x201000
78    
79    
80     struct dec21030_data {
81     int graphics_mode;
82     uint32_t pixel_mask;
83     uint32_t copy_source;
84     uint32_t color;
85     struct vfb_data *vfb_data;
86     };
87    
88    
89     /*
90     * dev_dec21030_access():
91     */
92 dpavlin 22 DEVICE_ACCESS(dec21030)
93 dpavlin 20 {
94     struct dec21030_data *d = extra;
95     uint64_t idata, odata = 0;
96 dpavlin 22 int reg, r, white = 255, black = 0;
97     size_t i, newlen;
98 dpavlin 20 unsigned char buf2[MAX_XSIZE];
99    
100     /* Read/write to the framebuffer: */
101     if (relative_addr >= FRAMEBUFFER_BASE) {
102     /* TODO: Perhaps this isn't graphics mode (GMOR),
103     but GOPR (operation) specific: */
104    
105     switch (d->graphics_mode) {
106     case 1: /* Bitmap write: */
107     /* Copy from data into buf2: */
108     for (i=0; i<len; i++) {
109     buf2[i*8 + 0] = data[i]&1? white : black;
110     buf2[i*8 + 1] = data[i]&2? white : black;
111     buf2[i*8 + 2] = data[i]&4? white : black;
112     buf2[i*8 + 3] = data[i]&8? white : black;
113     buf2[i*8 + 4] = data[i]&16? white : black;
114     buf2[i*8 + 5] = data[i]&32? white : black;
115     buf2[i*8 + 6] = data[i]&64? white : black;
116     buf2[i*8 + 7] = data[i]&128? white : black;
117     }
118    
119     newlen = 0;
120     for (i=0; i<32; i++)
121     if (d->pixel_mask & (1 << i))
122     newlen ++;
123    
124     if (newlen > len * 8)
125     newlen = len * 8;
126    
127     r = dev_fb_access(cpu, mem, relative_addr -
128     FRAMEBUFFER_BASE, buf2, newlen, writeflag,
129     d->vfb_data);
130     break;
131     case 0x2d: /* Block fill: */
132     /* data is nr of pixels to fill minus one */
133     newlen = memory_readmax64(cpu, data, len) + 1;
134     /* debug("YO addr=0x%08x, newlen=%i\n", relative_addr,
135     newlen); */
136     if (newlen > MAX_XSIZE)
137     newlen = MAX_XSIZE;
138     memset(buf2, d->color, newlen);
139     r = dev_fb_access(cpu, mem, relative_addr -
140     FRAMEBUFFER_BASE, buf2, newlen, MEM_WRITE,
141     d->vfb_data);
142     break;
143     default:
144     r = dev_fb_access(cpu, mem, relative_addr -
145     FRAMEBUFFER_BASE, data, len, writeflag,
146     d->vfb_data);
147     }
148     return r;
149     }
150    
151     idata = memory_readmax64(cpu, data, len);
152    
153     /* Read from/write to the dec21030's registers: */
154     reg = ((relative_addr - TGA_MEM_CREGS) & (TGA_CREGS_ALIAS - 1))
155     / sizeof(uint32_t);
156     switch (reg) {
157    
158     /* Color? (there are 8 of these, 2 used in 8-bit mode,
159     8 in 24-bit mode) */
160     case TGA_REG_GBCR0:
161     if (writeflag == MEM_WRITE)
162     d->color = idata;
163     else
164     odata = d->color;
165     break;
166    
167     /* Board revision */
168     /* case TGA_MEM_CREGS + sizeof(uint32_t) * TGA_REG_GREV: */
169     case TGA_REG_GREV:
170     /* 01,02,03,04 (rev0) and 20,21,22 (rev1) are allowed */
171     odata = 0x04;
172     break;
173    
174     /* Graphics Mode: */
175     case TGA_REG_GMOR:
176     if (writeflag == MEM_WRITE)
177     d->graphics_mode = idata;
178     else
179     odata = d->graphics_mode;
180     break;
181    
182     /* Pixel mask: */
183     case TGA_REG_GPXR_S: /* "one-shot" */
184     case TGA_REG_GPXR_P: /* persistant */
185     if (writeflag == MEM_WRITE)
186     d->pixel_mask = idata;
187     else
188     odata = d->pixel_mask;
189     break;
190    
191     /* Horizonsal size: */
192     case TGA_REG_VHCR:
193     odata = dec21030_default_xsize / 4; /* lowest 9 bits */
194     break;
195    
196     /* Vertical size: */
197     case TGA_REG_VVCR:
198     odata = dec21030_default_ysize; /* lowest 11 bits */
199     break;
200    
201     /* Block copy source: */
202     case TGA_REG_GCSR:
203     d->copy_source = idata;
204     debug("[ dec21030: block copy source = 0x%08x ]\n", idata);
205     break;
206    
207     /* Block copy destination: */
208     case TGA_REG_GCDR:
209     debug("[ dec21030: block copy destination = 0x%08x ]\n", idata);
210     newlen = 64;
211     /* Both source and destination are raw framebuffer addresses,
212     offset by 0x1000. */
213     dev_fb_access(cpu, mem, d->copy_source - 0x1000,
214     buf2, newlen, MEM_READ, d->vfb_data);
215     dev_fb_access(cpu, mem, idata - 0x1000,
216     buf2, newlen, MEM_WRITE, d->vfb_data);
217     break;
218    
219     default:
220     if (writeflag == MEM_WRITE)
221     debug("[ dec21030: unimplemented write to address"
222     " 0x%x (=reg 0x%x), data=0x%02x ]\n",
223     (int)relative_addr, reg, (int)idata);
224     else
225     debug("[ dec21030: unimplemented read from address"
226     " 0x%x (=reg 0x%x) ]\n", (int)relative_addr, reg);
227     }
228    
229     if (writeflag == MEM_READ)
230     memory_writemax64(cpu, data, len, odata);
231    
232     return 1;
233     }
234    
235    
236 dpavlin 22 DEVINIT(dec21030)
237 dpavlin 20 {
238     struct dec21030_data *d;
239    
240     d = malloc(sizeof(struct dec21030_data));
241     if (d == NULL) {
242     fprintf(stderr, "out of memory\n");
243     exit(1);
244     }
245     memset(d, 0, sizeof(struct dec21030_data));
246    
247     memory_device_register(devinit->machine->memory, devinit->name,
248     devinit->addr, 128*1048576, dev_dec21030_access, d,
249     DM_DEFAULT, NULL);
250    
251     /*
252     * TODO: I have no idea about how/where this framebuffer should
253     * be in relation to the pci device
254     */
255     d->vfb_data = dev_fb_init(devinit->machine, devinit->machine->memory,
256     FRAMEBUFFER_PADDR, VFB_GENERIC,
257     dec21030_default_xsize, dec21030_default_ysize,
258     dec21030_default_xsize, dec21030_default_ysize, 8, "TGA");
259    
260     return 1;
261     }
262    

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