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

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Revision 28 - (show annotations)
Mon Oct 8 16:20:26 2007 UTC (13 years, 2 months ago) by dpavlin
File MIME type: text/plain
File size: 4731 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1298 2006/07/22 11:27:46 debug Exp $
20060626	Continuing on SPARC emulation (beginning on the 'save'
		instruction, register windows, etc).
20060629	Planning statistics gathering (new -s command line option),
		and renaming speed_tricks to allow_instruction_combinations.
20060630	Some minor manual page updates.
		Various cleanups.
		Implementing the -s command line option.
20060701	FINALLY found the bug which prevented Linux and Ultrix from
		running without the ugly hack in the R2000/R3000 cache isol
		code; it was the phystranslation hint array which was buggy.
		Removing the phystranslation hint code completely, for now.
20060702	Minor dyntrans cleanups; invalidation of physpages now only
		invalidate those parts of a page that have actually been
		translated. (32 parts per page.)
		Some MIPS non-R3000 speed fixes.
		Experimenting with MIPS instruction combination for some
		addiu+bne+sw loops, and sw+sw+sw.
		Adding support (again) for larger-than-4KB pages in MIPS tlbw*.
		Continuing on SPARC emulation: adding load/store instructions.
20060704	Fixing a virtual vs physical page shift bug in the new tlbw*
		implementation. Problem noticed by Jakub Jermar. (Many thanks.)
		Moving rfe and eret to cpu_mips_instr.c, since that is the
		only place that uses them nowadays.
20060705	Removing the BSD license from the "testmachine" include files,
		placing them in the public domain instead; this enables the
		testmachine stuff to be used from projects which are
		incompatible with the BSD license for some reason.
20060707	Adding instruction combinations for the R2000/R3000 L1
		I-cache invalidation code used by NetBSD/pmax 3.0, lui+addiu,
		various branches followed by addiu or nop, and jr ra followed
		by addiu. The time it takes to perform a full NetBSD/pmax R3000
		install on the laptop has dropped from 573 seconds to 539. :-)
20060708	Adding a framebuffer controller device (dev_fbctrl), which so
		far can be used to change the fb resolution during runtime, but
		in the future will also be useful for accelerated block fill/
		copy, and possibly also simplified character output.
		Adding an instruction combination for NetBSD/pmax' strlen.
20060709	Minor fixes: reading raw files in src/file.c wasn't memblock
		aligned, removing buggy multi_sw MIPS instruction combination,
		etc.
20060711	Adding a machine_qemu.c, which contains a "qemu_mips" machine.
		(It mimics QEMU's MIPS machine mode, so that a test kernel
		made for QEMU_MIPS also can run in GXemul... at least to some
		extent.)  Adding a short section about how to run this mode to
		doc/guestoses.html.
20060714	Misc. minor code cleanups.
20060715	Applying a patch which adds getchar() to promemul/yamon.c
		(from Oleksandr Tymoshenko).
		Adding yamon.h from NetBSD, and rewriting yamon.c to use it
		(instead of ugly hardcoded numbers) + some cleanup.
20060716	Found and fixed the bug which broke single-stepping of 64-bit
		programs between 0.4.0 and 0.4.0.1 (caused by too quick
		refactoring and no testing). Hopefully this fix will not
		break too many other things.
20060718	Continuing on the 8253 PIT; it now works with Linux/QEMU_MIPS.
		Re-adding the sw+sw+sw instr comb (the problem was that I had
		ignored endian issues); however, it doesn't seem to give any
		big performance gain.
20060720	Adding a dummy Transputer mode (T414, T800 etc) skeleton (only
		the 'j' and 'ldc' instructions are implemented so far). :-}
20060721	Adding gtreg.h from NetBSD, updating dev_gt.c to use it, plus
		misc. other updates to get Linux 2.6 for evbmips/malta working
		(thanks to Alec Voropay for the details).
		FINALLY found and fixed the bug which made tlbw* for non-R3000
		buggy; it was a reference count problem in the dyntrans core.
20060722	Testing stuff; things seem stable enough for a new release.

==============  RELEASE 0.4.1  ==============


1 /*
2 * Copyright (C) 2006 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_fbctrl.c,v 1.4 2006/07/09 07:53:33 debug Exp $
29 *
30 * A "framebuffer control" device. It can be used to manipulate the
31 * framebuffer device in testmachines.
32 */
33
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37
38 #include "cpu.h"
39 #include "cpu_mips.h"
40 #include "device.h"
41 #include "devices.h"
42 #include "machine.h"
43 #include "memory.h"
44 #include "misc.h"
45
46 #include "testmachine/dev_fb.h"
47
48
49 struct fbctrl_data {
50 struct vfb_data *vfb_data;
51 int current_port;
52 int port[DEV_FBCTRL_NPORTS];
53 };
54
55
56 /*
57 * fbctrl_command():
58 *
59 * Execute a framebuffer control command.
60 */
61 static void fbctrl_command(struct cpu *cpu, struct fbctrl_data *d)
62 {
63 int cmd = d->port[DEV_FBCTRL_PORT_COMMAND];
64 int x1, y1, i;
65 struct machine *machine;
66
67 switch (cmd) {
68
69 case DEV_FBCTRL_COMMAND_NOP:
70 break;
71
72 case DEV_FBCTRL_COMMAND_SET_RESOLUTION:
73 /*
74 * Change the framebuffer resolution to X1 x Y1 pixels.
75 */
76 x1 = d->port[DEV_FBCTRL_PORT_X1];
77 y1 = d->port[DEV_FBCTRL_PORT_Y1];
78 debug("[ dev_fbctrl: changing resolution to %i,%i ]\n", x1, y1);
79
80 dev_fb_resize(d->vfb_data, x1, y1);
81
82 /* Remember to invalidate all translations for anyone
83 who might have used the old framebuffer: */
84 machine = cpu->machine;
85 for (i=0; i<machine->ncpus; i++)
86 machine->cpus[i]->invalidate_translation_caches(
87 machine->cpus[i], 0, INVALIDATE_ALL);
88 break;
89
90 case DEV_FBCTRL_COMMAND_GET_RESOLUTION:
91 d->port[DEV_FBCTRL_PORT_X1] = d->vfb_data->xsize;
92 d->port[DEV_FBCTRL_PORT_Y1] = d->vfb_data->ysize;
93 break;
94
95 /* TODO: Block copy and fill. */
96
97 default:fatal("fbctrl_command: Unimplemented command %i.\n", cmd);
98 exit(1);
99 }
100 }
101
102
103 DEVICE_ACCESS(fbctrl)
104 {
105 struct fbctrl_data *d = extra;
106 uint64_t idata = 0, odata = 0;
107
108 if (writeflag == MEM_WRITE)
109 idata = memory_readmax64(cpu, data, len);
110
111 switch (relative_addr) {
112
113 case DEV_FBCTRL_PORT:
114 if (writeflag == MEM_READ)
115 odata = d->current_port;
116 else {
117 d->current_port = idata;
118 if (idata >= DEV_FBCTRL_NPORTS)
119 fatal("[ WARNING: fbctrl port number is out"
120 " of range! ]\n");
121 }
122 break;
123
124 case DEV_FBCTRL_DATA:
125 if (d->current_port < 0 || d->current_port
126 >= DEV_FBCTRL_NPORTS) {
127 fatal("[ fbctrl port number is out of range! ]\n");
128 exit(1);
129 }
130
131 if (writeflag == MEM_READ)
132 odata = d->port[d->current_port];
133 else {
134 d->port[d->current_port] = idata;
135 if (d->current_port == DEV_FBCTRL_PORT_COMMAND)
136 fbctrl_command(cpu, d);
137 }
138
139 break;
140
141 default:
142 fatal("[ dev_fbctrl: unimplemented relative addr 0x%x ]\n",
143 (int)relative_addr);
144 exit(1);
145 }
146
147 if (writeflag == MEM_READ)
148 memory_writemax64(cpu, data, len, odata);
149
150 return 1;
151 }
152
153
154 DEVINIT(fbctrl)
155 {
156 struct fbctrl_data *d;
157
158 d = malloc(sizeof(struct fbctrl_data));
159 if (d == NULL) {
160 fprintf(stderr, "out of memory\n");
161 exit(1);
162 }
163 memset(d, 0, sizeof(struct fbctrl_data));
164
165 d->vfb_data = dev_fb_init(devinit->machine, devinit->machine->memory,
166 DEV_FB_ADDRESS, VFB_GENERIC, 640, 480, 640, DEV_FBCTRL_MAXY(640),
167 24, "generic");
168
169 memory_device_register(devinit->machine->memory, devinit->name,
170 devinit->addr, DEV_FBCTRL_LENGTH, dev_fbctrl_access, d,
171 DM_DEFAULT, NULL);
172
173 return 1;
174 }
175

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