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

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Revision 4 - (show annotations)
Mon Oct 8 16:18:00 2007 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 11091 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.707 2005/04/27 16:37:33 debug Exp $
20050408	Some minor updates to the wdc. Linux now doesn't complain
		anymore if a disk is non-present.
20050409	Various minor fixes (a bintrans bug, and some other things).
		The wdc seems to work with Playstation2 emulation, but there
		is a _long_ annoying delay when disks are detected.
		Fixing a really important bintrans bug (when devices and RAM
		are mixed within 4KB pages), which was triggered with
		NetBSD/playstation2 kernels.
20050410	Adding a dummy dev_ps2_ether (just so that NetBSD doesn't
		complain as much during bootup).
		Symbols starting with '$' are now ignored.
		Renaming dev_ps2_ohci.c to dev_ohci.c, etc.
20050411	Moving the bintrans-cache-isolation check from cpu_mips.c to
		cpu_mips_coproc.c. (I thought this would give a speedup, but
		it's not noticable.)
		Better playstation2 sbus interrupt code.
		Skip ahead many ticks if the count register is read manually.
		(This increases the speed of delay-loops that simply read
		the count register.)
20050412	Updates to the playstation2 timer/interrupt code.
		Some other minor updates.
20050413	NetBSD/cobalt runs from a disk image :-) including userland;
		updating the documentation on how to install NetBSD/cobalt
		using NetBSD/pmax (!).
		Some minor bintrans updates (no real speed improvement) and
		other minor updates (playstation2 now uses the -o options).
20050414	Adding a dummy x86 (and AMD64) mode.
20050415	Adding some (32-bit and 16-bit) x86 instructions.
		Adding some initial support for non-SCSI, non-IDE floppy
		images. (The x86 mode can boot from these, more or less.)
		Moving the devices/ and include/ directories to src/devices/
		and src/include/, respectively.
20050416	Continuing on the x86 stuff. (Adding pc_bios.c and some simple
		support for software interrupts in 16-bit mode.)
20050417	Ripping out most of the x86 instruction decoding stuff, trying
		to rewrite it in a cleaner way.
		Disabling some of the least working CPU families in the
		configure script (sparc, x86, alpha, hppa), so that they are
		not enabled by default.
20050418	Trying to fix the bug which caused problems when turning on
		and off bintrans interactively, by flushing the bintrans cache
		whenever bintrans is manually (re)enabled.
20050419	Adding the 'lswi' ppc instruction.
		Minor updates to the x86 instruction decoding.
20050420	Renaming x86 register name indices from R_xx to X86_R_xx (this
		makes building on Tru64 nicer).
20050422	Adding a check for duplicate MIPS TLB entries on tlbwr/tlbwi.
20050427	Adding screenshots to guestoses.html.
		Some minor fixes and testing for the next release.

==============  RELEASE 0.3.2  ==============


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_turbochannel.c,v 1.40 2005/02/18 06:19:19 debug Exp $
29 *
30 * Generic framework for TURBOchannel devices, used in DECstation machines.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 #include "devices.h"
38 #include "machine.h"
39 #include "memory.h"
40 #include "misc.h"
41 #include "sfbreg.h"
42
43
44 struct turbochannel_data {
45 int slot_nr;
46 uint64_t baseaddr;
47 uint64_t endaddr;
48 int irq;
49
50 int rom_skip;
51
52 char device_name[9]; /* NUL-terminated */
53
54 /* These should be terminated with spaces */
55 char card_firmware_version[8];
56 char card_vendor_name[8];
57 char card_module_name[8];
58 char card_firmware_type[4];
59 };
60
61
62 /*
63 * dev_turbochannel_access():
64 */
65 int dev_turbochannel_access(struct cpu *cpu, struct memory *mem,
66 uint64_t relative_addr, unsigned char *data, size_t len,
67 int writeflag, void *extra)
68 {
69 struct turbochannel_data *d = extra;
70 uint64_t idata = 0, odata = 0;
71
72 idata = memory_readmax64(cpu, data, len);
73
74 relative_addr += d->rom_skip;
75
76 if (writeflag == MEM_READ) {
77 debug("[ turbochannel: read from slot %i addr 0x%08lx (",
78 d->slot_nr, (long)relative_addr);
79
80 relative_addr &= 0x7fff;
81
82 switch (relative_addr) {
83 case 0x3e0:
84 odata = 0x00000001; debug("ROM width");
85 break;
86 case 0x3e4:
87 odata = 0x00000004; debug("ROM stride");
88 break;
89 case 0x3e8:
90 /* 8KB * romsize */
91 odata = 0x00000001; debug("ROM size");
92 break;
93 case 0x3ec:
94 /* 4MB * slotsize */
95 odata = 0x00000001; debug("slot size");
96 break;
97 case 0x3f0:
98 odata = 0x55555555; debug("ROM signature byte 0");
99 break;
100 case 0x3f4:
101 odata = 0x00000000; debug("ROM signature byte 1");
102 break;
103 case 0x3f8:
104 odata = 0xaaaaaaaa; debug("ROM signature byte 2");
105 break;
106 case 0x3fc:
107 odata = 0xffffffff; debug("ROM signature byte 3");
108 break;
109 case 0x470:
110 /* 0=nothing, 1=parity */
111 odata = 0x00000000; debug("flags"); break;
112 default:
113 if (relative_addr >= 0x400 && relative_addr < 0x420)
114 odata = d->card_firmware_version[
115 (relative_addr-0x400)/4];
116 else if (relative_addr >= 0x420 &&
117 relative_addr < 0x440)
118 odata = d->card_vendor_name[
119 (relative_addr-0x420)/4];
120 else if (relative_addr >= 0x440 &&
121 relative_addr < 0x460)
122 odata = d->card_module_name[
123 (relative_addr-0x440)/4];
124 else if (relative_addr >= 0x460 &&
125 relative_addr < 0x470)
126 odata = d->card_firmware_type[
127 (relative_addr-0x460)/4];
128 else {
129 debug("?");
130 }
131 }
132
133 /*
134 * If this slot is empty, return an error so that a DBE
135 * exception is caused. (This is the way DECstation operating
136 * systems have to detect the absence of cards in a
137 * TURBOchannel slot.)
138 *
139 * NOTE: The Sprite kernel reads from offsets 0x3e0..0x400
140 * without handling the DBE exception, and both Ultrix and
141 * NetBSD seem to detect the DBE exception using addresses
142 * around offset 0x0 or 0x3c0000. This code seems to work
143 * with all of the those OS kernels:
144 */
145 if (d->card_module_name[0] == ' ') {
146 /* Return no data for empty slot: */
147 odata = 0;
148
149 /* Return DBE exception in some cases: */
150 if (relative_addr < 0x3e0 || relative_addr >= 0x500)
151 return 0;
152 }
153
154 debug(") ]\n");
155 } else {
156 /* debug("[ turbochannel: write to 0x%08lx: 0x%08x ]\n",
157 (long)relative_addr, (int)idata); */
158 }
159
160 if (writeflag == MEM_READ)
161 memory_writemax64(cpu, data, len, odata);
162
163 return 1;
164 }
165
166
167 /*
168 * dev_turbochannel_init():
169 *
170 * This is a generic turbochannel card device. device_name should point
171 * to a string such as "PMAG-BA".
172 *
173 * TODO: When running for example dual-head, maybe the name of each
174 * framebuffer should include the card slot number?
175 */
176 void dev_turbochannel_init(struct machine *machine, struct memory *mem,
177 int slot_nr, uint64_t baseaddr, uint64_t endaddr,
178 char *device_name, int irq)
179 {
180 struct vfb_data *fb;
181 struct turbochannel_data *d;
182 int rom_offset = 0x3c0000;
183 int rom_length = DEV_TURBOCHANNEL_LEN;
184 int rom_skip = 0;
185 char *name2;
186
187 if (device_name == NULL)
188 return;
189
190 if (strlen(device_name) > 8) {
191 fprintf(stderr, "dev_turbochannel_init(): bad device_name\n");
192 exit(1);
193 }
194
195 d = malloc(sizeof(struct turbochannel_data));
196 if (d == NULL) {
197 fprintf(stderr, "out of memory\n");
198 exit(1);
199 }
200 memset(d, 0, sizeof(struct turbochannel_data));
201 d->slot_nr = slot_nr;
202 d->baseaddr = baseaddr;
203 d->endaddr = endaddr;
204 d->irq = irq;
205
206 strcpy(d->device_name, device_name);
207
208 strncpy(d->card_firmware_version, "V5.3a ", 8);
209 strncpy(d->card_vendor_name, "DEC ", 8);
210 strncpy(d->card_firmware_type, "TCF0", 4);
211
212 memset(d->card_module_name, ' ', 8);
213 strncpy(d->card_module_name, device_name, strlen(device_name));
214
215 /*
216 * According to NetBSD/pmax:
217 *
218 * PMAD-AA: le1 at tc0 slot 2 offset 0x0: address 00:00:00:00:00:00
219 * PMAG-AA: mfb0 at tc0 slot 2 offset 0x0: 1280x1024x8
220 * PMAG-BA: cfb0 at tc0 slot 2 offset 0x0cfb0: 1024x864x8
221 * PMAG-CA: px0 at tc0 slot 2 offset 0x0: 2D, 4x1 stamp, 8 plane
222 * (PMAG-DA,EA,FA,FB are also pixelstamps)
223 * PMAG-DV: xcfb0 at tc0 slot 2 offset 0x0: 1024x768x8
224 * PMAG-JA: "truecolor" in Ultrix
225 * PMAGB-BA: sfb0 at tc0 slot 0 offset 0x0: 0x0x8
226 * PMAGB-VA: sfb0 at tc0 slot 2 offset 0x0: 0x0x8
227 * PMAZ-AA: asc0 at tc0 slot 2 offset 0x0: NCR53C94, 25MHz, SCSI ID 7
228 *
229 * PMAF-FA: fta0 at tc0 slot 0 (fddi network, "DEC", "V1.0b")
230 */
231
232 if (strcmp(device_name, "PMAD-AA")==0) {
233 /* le in NetBSD, Lance ethernet */
234 dev_le_init(machine, mem, baseaddr, 0, 0, irq, DEV_LE_LENGTH);
235 /* One ROM at 0x1c03e0, and one at 0x3c0000. */
236 rom_skip = 0x300;
237 rom_offset = 0x1c0000;
238 rom_length = 0x201000;
239 } else if (strcmp(device_name, "PMAZ-AA")==0) {
240 /* asc in NetBSD, SCSI */
241 dev_asc_init(machine, mem, baseaddr, irq, d,
242 DEV_ASC_DEC, NULL, NULL);
243 rom_offset = 0xc0000;
244 /* There is a copy at 0x0, at least that's where Linux
245 looks for the rom signature */
246 } else if (strcmp(device_name, "PMAG-AA")==0) {
247 /* mfb in NetBSD */
248 fb = dev_fb_init(machine, mem, baseaddr + VFB_MFB_VRAM,
249 VFB_GENERIC, 1280, 1024, 2048, 1024, 8, device_name, 1);
250 /* bt455 = palette, bt431 = cursor */
251 dev_bt455_init(mem, baseaddr + VFB_MFB_BT455, fb);
252 dev_bt431_init(mem, baseaddr + VFB_MFB_BT431, fb, 8);
253 rom_offset = 0;
254 } else if (strcmp(device_name, "PMAG-BA")==0) {
255 /* cfb in NetBSD */
256 fb = dev_fb_init(machine, mem, baseaddr, VFB_GENERIC,
257 1024,864, 1024,1024,8, device_name, 1);
258 dev_bt459_init(machine, mem, baseaddr + VFB_CFB_BT459,
259 baseaddr + 0x300000, fb, 8, irq, BT459_BA);
260 /* ROM at both 0x380000 and 0x3c0000? */
261 rom_offset = 0x380000;
262 rom_length = 0x080000;
263 } else if (strcmp(device_name, "PMAGB-BA")==0) {
264 /* sfb in NetBSD */
265 /* TODO: This is not working with Ultrix yet. */
266 fb = dev_fb_init(machine, mem, baseaddr + SFB_OFFSET_VRAM,
267 VFB_GENERIC, 1280,1024, 1280,1024,8, device_name, 1);
268 dev_sfb_init(machine, mem, baseaddr + SFB_ASIC_OFFSET, fb);
269 /* TODO: the CLEAR doesn't get through, as the address
270 range is already in use by the asic */
271 dev_bt459_init(machine, mem, baseaddr + SFB_OFFSET_BT459,
272 baseaddr + SFB_CLEAR, fb, 8, irq, BT459_BBA);
273 rom_offset = 0x0; /* ? TODO */
274 } else if (strcmp(device_name, "PMAG-CA")==0) {
275 /* px in NetBSD */
276 dev_px_init(machine, mem, baseaddr, DEV_PX_TYPE_PX, irq);
277 rom_offset = 0x3c0000;
278 } else if (strcmp(device_name, "PMAG-DA")==0) {
279 /* pxg in NetBSD */
280 dev_px_init(machine, mem, baseaddr, DEV_PX_TYPE_PXG, irq);
281 rom_offset = 0x3c0000;
282 } else if (strcmp(device_name, "PMAG-EA")==0) {
283 /* pxg+ in NetBSD: TODO (not supported by the kernel
284 I've tried) */
285 fatal("TODO (see dev_turbochannel.c)\n");
286 rom_offset = 0x3c0000;
287 } else if (strcmp(device_name, "PMAG-FA")==0) {
288 /* "pxg+ Turbo" in NetBSD */
289 dev_px_init(machine, mem, baseaddr,
290 DEV_PX_TYPE_PXGPLUSTURBO, irq);
291 rom_offset = 0x3c0000;
292 } else if (strcmp(device_name, "PMAG-DV")==0) {
293 /* xcfb in NetBSD: TODO */
294 fb = dev_fb_init(machine, mem, baseaddr + 0x2000000,
295 VFB_DEC_MAXINE, 0, 0, 0, 0, 0, "PMAG-DV", 1);
296 /* TODO: not yet usable, needs a IMS332 vdac */
297 rom_offset = 0x3c0000;
298 } else if (strcmp(device_name, "PMAG-JA")==0) {
299 /* "Truecolor", mixed 8- and 24-bit */
300 dev_pmagja_init(machine, mem, baseaddr, irq);
301 rom_offset = 0; /* NOTE: 0, not 0x3c0000 */
302 } else if (strcmp(device_name, "PMAG-RO")==0) {
303 /* This works at least B/W in Ultrix, so far. */
304 fb = dev_fb_init(machine, mem, baseaddr + 0x200000,
305 VFB_GENERIC, 1280,1024, 1280,1024, 8, "PMAG-RO", 1);
306 /* TODO: bt463 at offset 0x040000, not bt459 */
307 dev_bt459_init(machine, mem, baseaddr + 0x40000, 0,
308 fb, 8, irq, 0); /* TODO: type */
309 dev_bt431_init(mem, baseaddr + 0x40010, fb, 8); /* cursor */
310 rom_offset = 0x3c0000;
311 } else if (device_name[0] == '\0') {
312 /* If this slot is empty, then occupy the entire
313 4MB slot address range: */
314 rom_offset = 0;
315 rom_length = 4*1048576;
316 } else {
317 fatal("warning: unknown TURBOchannel device name \"%s\"\n",
318 device_name);
319 }
320
321 d->rom_skip = rom_skip;
322
323 name2 = malloc(strlen(device_name) + 30);
324 if (name2 == NULL) {
325 fprintf(stderr, "out of memory in dev_turbochannel_init()\n");
326 exit(1);
327 }
328 if (*device_name)
329 sprintf(name2, "turbochannel [%s]", device_name);
330 else
331 sprintf(name2, "turbochannel");
332
333 memory_device_register(mem, name2, baseaddr + rom_offset + rom_skip,
334 rom_length-rom_skip, dev_turbochannel_access, d, MEM_DEFAULT, NULL);
335 }
336

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