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 Unpublished rights reserved under the copyright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>
42 #include <sys/kernel.h>
43 #include <sys/sysctl.h>
45 #include <cam/cam_ccb.h>
46 #include <geom/geom_disk.h>
47 #include <machine/md_var.h>
48 #include <pc98/pc98/pc98_machdep.h>
50 static int ad_geom_method = AD_GEOM_ADJUST_COMPATIDE;
52 SYSCTL_INT(_machdep, OID_AUTO, ad_geom_method, CTLFLAG_RWTUN, &ad_geom_method, 0,
53 "IDE disk geometry conversion method");
56 * Initialize DMA controller
61 outb(0x439, (inb(0x439) & 0xfb)); /* DMA Accsess Control over 1MB */
62 outb(0x29, (0x0c | 0)); /* Bank Mode Reg. 16M mode */
63 outb(0x29, (0x0c | 1)); /* Bank Mode Reg. 16M mode */
64 outb(0x29, (0x0c | 2)); /* Bank Mode Reg. 16M mode */
65 outb(0x29, (0x0c | 3)); /* Bank Mode Reg. 16M mode */
71 * Disconnect phisical memory in 15-16MB region.
73 * EPSON PC-486GR, P, SR, SE, HX, HG and HA only. Other system support
74 * this feature with software DIP switch.
77 init_epson_memwin(void)
79 /* Disable 15MB-16MB caching. */
80 switch (epson_machine_id) {
84 /* Cache control start. */
88 /* Disable 0xF00000-0xFFFFFF. */
100 /* Cache control end. */
106 case EPSON_PC486_GR_SUPER:
107 case EPSON_PC486_GR_PLUS:
110 /* Disable 0xF00000-0xFFFFFF. */
121 /* Disable 15MB-16MB RAM and enable memory window. */
122 outb(0x43b, inb(0x43b) & 0xfd); /* Clear bit1. */
127 * Get physical memory size
130 pc98_getmemsize(unsigned int *base, unsigned int *ext)
132 unsigned int under16, over16;
134 /* available conventional memory size */
135 *base = ((PC98_SYSTEM_PARAMETER(0x501) & 7) + 1) * 128;
137 /* available protected memory size under 16MB */
138 under16 = PC98_SYSTEM_PARAMETER(0x401) * 128 + 1024;
140 if (pc98_machine_type & M_EPSON_PC98) {
141 if (under16 > (15 * 1024))
142 /* chop under16 memory to 15MB */
148 /* available protected memory size over 16MB / 1MB */
149 over16 = PC98_SYSTEM_PARAMETER(0x594);
150 over16 += PC98_SYSTEM_PARAMETER(0x595) * 256;
153 *ext = (16 + over16) * 1024 - 1024;
155 *ext = under16 - 1024;
161 * Read a geometry information of SCSI HDD from BIOS work area.
163 * XXX - Before reading BIOS work area, we should check whether
164 * host adapter support it.
167 scsi_da_bios_params(struct ccb_calc_geometry *ccg)
172 target = ccg->ccb_h.target_id;
173 tmp = (u_char *)&PC98_SYSTEM_PARAMETER(0x460 + target*4);
174 if ((PC98_SYSTEM_PARAMETER(0x482) & ((1 << target)&0xff)) != 0) {
175 ccg->secs_per_track = *tmp;
176 ccg->cylinders = ((*(tmp+3)<<8)|*(tmp+2))&0xfff;
178 switch (*(tmp + 3) & 0x30) {
180 disk_parms->secsiz = 256;
181 printf("Warning!: not supported.\n");
184 disk_parms->secsiz = 512;
187 disk_parms->secsiz = 1024;
190 disk_parms->secsiz = 512;
191 printf("Warning!: not supported. But force to 512\n");
195 if (*(tmp+3) & 0x40) {
196 ccg->cylinders += (*(tmp+1)&0xf0)<<8;
197 ccg->heads = *(tmp+1)&0x0f;
199 ccg->heads = *(tmp+1);
208 * Adjust the geometry of the IDE HDD.
211 /* IDE BIOS compatible mode. */
213 pc98_ata_disk_geom_adjust_idebios(struct disk *disk)
216 if (disk->d_mediasize < MEDIASIZE_4_3G) {
217 disk->d_fwsectors = 17;
219 } else if (disk->d_mediasize < MEDIASIZE_29_5G) {
220 disk->d_fwsectors = 63;
221 if (disk->d_fwheads != 15) /* Allow 15H63S. */
222 disk->d_fwheads = 16;
223 } else if (disk->d_mediasize < MEDIASIZE_31_5G) {
224 disk->d_fwsectors = 63;
225 disk->d_fwheads = 16;
226 } else if (disk->d_mediasize < MEDIASIZE_127G) {
227 disk->d_fwsectors = 255;
228 disk->d_fwheads = 16;
231 disk->d_fwsectors = 255;
232 disk->d_fwheads = 255;
236 /* SCSI BIOS compatible mode. */
238 pc98_ata_disk_geom_adjust_scsibios(struct disk *disk)
241 if (disk->d_mediasize < MEDIASIZE_8G) {
242 disk->d_fwsectors = 32;
244 } else if (disk->d_mediasize < MEDIASIZE_32G) {
245 disk->d_fwsectors = 128;
247 } else if (disk->d_mediasize < MEDIASIZE_60G) {
248 /* Compatible with IFC-USP 1.2. */
249 disk->d_fwsectors = 128;
250 disk->d_fwheads = 15;
251 } else if (disk->d_mediasize < MEDIASIZE_120G) {
252 disk->d_fwsectors = 255;
253 disk->d_fwheads = 15;
256 disk->d_fwsectors = 255;
257 disk->d_fwheads = 255;
261 /* Compatible with the revision 1.28. */
263 pc98_ata_disk_geom_adjust_cyl16bit(struct disk *disk)
265 off_t totsec = disk->d_mediasize / disk->d_sectorsize;
266 off_t cyl = totsec / disk->d_fwsectors / disk->d_fwheads;
269 * It is impossible to have more than 65535 cylinders, so if
270 * we have more then try to adjust. This is lame, but it is
274 if (totsec < 17*8*65535) {
275 disk->d_fwsectors = 17;
277 } else if (totsec < 63*16*65535) {
278 disk->d_fwsectors = 63;
279 disk->d_fwheads = 16;
280 } else if (totsec < 255*16*65535) {
281 disk->d_fwsectors = 255;
282 disk->d_fwheads = 16;
284 disk->d_fwsectors = 255;
285 disk->d_fwheads = 255;
291 pc98_ata_disk_firmware_geom_adjust(struct disk *disk)
293 u_int oldsectors, oldheads;
295 oldsectors = disk->d_fwsectors;
296 oldheads = disk->d_fwheads;
298 switch (ad_geom_method) {
299 case AD_GEOM_ADJUST_COMPATIDE:
300 pc98_ata_disk_geom_adjust_idebios(disk);
302 case AD_GEOM_ADJUST_COMPATSCSI:
303 pc98_ata_disk_geom_adjust_scsibios(disk);
305 case AD_GEOM_ADJUST_COMPATCYL16:
306 pc98_ata_disk_geom_adjust_cyl16bit(disk);
314 (oldsectors != disk->d_fwsectors || oldheads != disk->d_fwheads))
316 "%s%d: geometry adjusted from [%dH/%dS] to [%dH/%dS]\n",
317 disk->d_name, disk->d_unit,
318 oldheads, oldsectors,
319 disk->d_fwheads, disk->d_fwsectors);