2 * Copyright (c) KATO Takenori, 1996, 1997.
4 * All rights reserved. Unpublished rights reserved under the copyright
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer as
13 * the first lines of this file unmodified.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #include <sys/param.h>
37 #include <sys/systm.h>
40 #include <cam/cam_ccb.h>
42 #include <pc98/cbus/cbus.h>
44 #include <pc98/pc98/pc98_machdep.h>
47 * Initialize DMA controller
52 outb(0x439, (inb(0x439) & 0xfb)); /* DMA Accsess Control over 1MB */
53 outb(0x29, (0x0c | 0)); /* Bank Mode Reg. 16M mode */
54 outb(0x29, (0x0c | 1)); /* Bank Mode Reg. 16M mode */
55 outb(0x29, (0x0c | 2)); /* Bank Mode Reg. 16M mode */
56 outb(0x29, (0x0c | 3)); /* Bank Mode Reg. 16M mode */
62 * Disconnect phisical memory in 15-16MB region.
64 * EPSON PC-486GR, P, SR, SE, HX, HG and HA only. Other system support
65 * this feature with software DIP switch.
68 init_epson_memwin(void)
70 /* Disable 15MB-16MB caching. */
71 switch (epson_machine_id) {
72 case 0x34: /* PC486HX */
73 case 0x35: /* PC486HG */
74 case 0x3B: /* PC486HA */
75 /* Cache control start. */
79 /* Disable 0xF00000-0xFFFFFF. */
91 /* Cache control end. */
95 case 0x2B: /* PC486GR/GF */
96 case 0x30: /* PC486P */
97 case 0x31: /* PC486GRSuper */
98 case 0x32: /* PC486GR+ */
99 case 0x37: /* PC486SE */
100 case 0x38: /* PC486SR */
101 /* Disable 0xF00000-0xFFFFFF. */
112 /* Disable 15MB-16MB RAM and enable memory window. */
113 outb(0x43b, inb(0x43b) & 0xfd); /* Clear bit1. */
118 * Get physical memory size
121 pc98_getmemsize(unsigned int *base, unsigned int *ext)
123 unsigned int under16, over16;
125 /* available conventional memory size */
126 *base = ((PC98_SYSTEM_PARAMETER(0x501) & 7) + 1) * 128;
128 /* available protected memory size under 16MB */
129 under16 = PC98_SYSTEM_PARAMETER(0x401) * 128 + 1024;
131 if (pc98_machine_type & M_EPSON_PC98) {
132 if (under16 > (15 * 1024))
133 /* chop under16 memory to 15MB */
139 /* available protected memory size over 16MB / 1MB */
140 over16 = PC98_SYSTEM_PARAMETER(0x594);
141 over16 += PC98_SYSTEM_PARAMETER(0x595) * 256;
144 *ext = (16 + over16) * 1024 - 1024;
146 *ext = under16 - 1024;
152 * Read a geometry information of SCSI HDD from BIOS work area.
154 * XXX - Before reading BIOS work area, we should check whether
155 * host adapter support it.
158 scsi_da_bios_params(struct ccb_calc_geometry *ccg)
163 target = ccg->ccb_h.target_id;
164 tmp = (u_char *)&PC98_SYSTEM_PARAMETER(0x460 + target*4);
165 if ((PC98_SYSTEM_PARAMETER(0x482) & ((1 << target)&0xff)) != 0) {
166 ccg->secs_per_track = *tmp;
167 ccg->cylinders = ((*(tmp+3)<<8)|*(tmp+2))&0xfff;
169 switch (*(tmp + 3) & 0x30) {
171 disk_parms->secsiz = 256;
172 printf("Warning!: not supported.\n");
175 disk_parms->secsiz = 512;
178 disk_parms->secsiz = 1024;
181 disk_parms->secsiz = 512;
182 printf("Warning!: not supported. But force to 512\n");
186 if (*(tmp+3) & 0x40) {
187 ccg->cylinders += (*(tmp+1)&0xf0)<<8;
188 ccg->heads = *(tmp+1)&0x0f;
190 ccg->heads = *(tmp+1);