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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/i2c/iicbus/@/pc98/pc98/pc98_machdep.c |
/*-
* Copyright (c) KATO Takenori, 1996, 1997.
*
* All rights reserved. Unpublished rights reserved under the copyright
* laws of Japan.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/pc98/pc98/pc98_machdep.c 208349 2010-05-20 12:46:19Z marius $
*/
#include "opt_pc98.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <geom/geom_disk.h>
#include <machine/md_var.h>
#include <pc98/pc98/pc98_machdep.h>
static int ad_geom_method = AD_GEOM_ADJUST_COMPATIDE;
TUNABLE_INT("machdep.ad_geom_method", &ad_geom_method);
SYSCTL_INT(_machdep, OID_AUTO, ad_geom_method, CTLFLAG_RW, &ad_geom_method, 0,
"IDE disk geometry conversion method");
/*
* Initialize DMA controller
*/
void
pc98_init_dmac(void)
{
outb(0x439, (inb(0x439) & 0xfb)); /* DMA Accsess Control over 1MB */
outb(0x29, (0x0c | 0)); /* Bank Mode Reg. 16M mode */
outb(0x29, (0x0c | 1)); /* Bank Mode Reg. 16M mode */
outb(0x29, (0x0c | 2)); /* Bank Mode Reg. 16M mode */
outb(0x29, (0x0c | 3)); /* Bank Mode Reg. 16M mode */
outb(0x11, 0x50);
}
#ifdef EPSON_MEMWIN
/*
* Disconnect phisical memory in 15-16MB region.
*
* EPSON PC-486GR, P, SR, SE, HX, HG and HA only. Other system support
* this feature with software DIP switch.
*/
static void
init_epson_memwin(void)
{
/* Disable 15MB-16MB caching. */
switch (epson_machine_id) {
case EPSON_PC486_HX:
case EPSON_PC486_HG:
case EPSON_PC486_HA:
/* Cache control start. */
outb(0x43f, 0x42);
outw(0xc40, 0x0033);
/* Disable 0xF00000-0xFFFFFF. */
outb(0xc48, 0x49);
outb(0xc4c, 0x00);
outb(0xc48, 0x48);
outb(0xc4c, 0xf0);
outb(0xc48, 0x4d);
outb(0xc4c, 0x00);
outb(0xc48, 0x4c);
outb(0xc4c, 0xff);
outb(0xc48, 0x4f);
outb(0xc4c, 0x00);
/* Cache control end. */
outb(0x43f, 0x40);
break;
case EPSON_PC486_GR:
case EPSON_PC486_P:
case EPSON_PC486_GR_SUPER:
case EPSON_PC486_GR_PLUS:
case EPSON_PC486_SE:
case EPSON_PC486_SR:
/* Disable 0xF00000-0xFFFFFF. */
outb(0x43f, 0x42);
outb(0x467, 0xe0);
outb(0x567, 0xd8);
outb(0x43f, 0x40);
outb(0x467, 0xe0);
outb(0x567, 0xe0);
break;
}
/* Disable 15MB-16MB RAM and enable memory window. */
outb(0x43b, inb(0x43b) & 0xfd); /* Clear bit1. */
}
#endif
/*
* Get physical memory size
*/
unsigned int
pc98_getmemsize(unsigned int *base, unsigned int *ext)
{
unsigned int under16, over16;
/* available conventional memory size */
*base = ((PC98_SYSTEM_PARAMETER(0x501) & 7) + 1) * 128;
/* available protected memory size under 16MB */
under16 = PC98_SYSTEM_PARAMETER(0x401) * 128 + 1024;
#ifdef EPSON_MEMWIN
if (pc98_machine_type & M_EPSON_PC98) {
if (under16 > (15 * 1024))
/* chop under16 memory to 15MB */
under16 = 15 * 1024;
init_epson_memwin();
}
#endif
/* available protected memory size over 16MB / 1MB */
over16 = PC98_SYSTEM_PARAMETER(0x594);
over16 += PC98_SYSTEM_PARAMETER(0x595) * 256;
if (over16 > 0)
*ext = (16 + over16) * 1024 - 1024;
else
*ext = under16 - 1024;
return (under16);
}
/*
* Read a geometry information of SCSI HDD from BIOS work area.
*
* XXX - Before reading BIOS work area, we should check whether
* host adapter support it.
*/
int
scsi_da_bios_params(struct ccb_calc_geometry *ccg)
{
u_char *tmp;
int target;
target = ccg->ccb_h.target_id;
tmp = (u_char *)&PC98_SYSTEM_PARAMETER(0x460 + target*4);
if ((PC98_SYSTEM_PARAMETER(0x482) & ((1 << target)&0xff)) != 0) {
ccg->secs_per_track = *tmp;
ccg->cylinders = ((*(tmp+3)<<8)|*(tmp+2))&0xfff;
#if 0
switch (*(tmp + 3) & 0x30) {
case 0x00:
disk_parms->secsiz = 256;
printf("Warning!: not supported.\n");
break;
case 0x10:
disk_parms->secsiz = 512;
break;
case 0x20:
disk_parms->secsiz = 1024;
break;
default:
disk_parms->secsiz = 512;
printf("Warning!: not supported. But force to 512\n");
break;
}
#endif
if (*(tmp+3) & 0x40) {
ccg->cylinders += (*(tmp+1)&0xf0)<<8;
ccg->heads = *(tmp+1)&0x0f;
} else {
ccg->heads = *(tmp+1);
}
return (1);
}
return (0);
}
/*
* Adjust the geometry of the IDE HDD.
*/
/* IDE BIOS compatible mode. */
static void
pc98_ata_disk_geom_adjust_idebios(struct disk *disk)
{
if (disk->d_mediasize < MEDIASIZE_4_3G) {
disk->d_fwsectors = 17;
disk->d_fwheads = 8;
} else if (disk->d_mediasize < MEDIASIZE_29_5G) {
disk->d_fwsectors = 63;
if (disk->d_fwheads != 15) /* Allow 15H63S. */
disk->d_fwheads = 16;
} else if (disk->d_mediasize < MEDIASIZE_31_5G) {
disk->d_fwsectors = 63;
disk->d_fwheads = 16;
} else if (disk->d_mediasize < MEDIASIZE_127G) {
disk->d_fwsectors = 255;
disk->d_fwheads = 16;
} else {
/* XXX */
disk->d_fwsectors = 255;
disk->d_fwheads = 255;
}
}
/* SCSI BIOS compatible mode. */
static void
pc98_ata_disk_geom_adjust_scsibios(struct disk *disk)
{
if (disk->d_mediasize < MEDIASIZE_8G) {
disk->d_fwsectors = 32;
disk->d_fwheads = 8;
} else if (disk->d_mediasize < MEDIASIZE_32G) {
disk->d_fwsectors = 128;
disk->d_fwheads = 8;
} else if (disk->d_mediasize < MEDIASIZE_60G) {
/* Compatible with IFC-USP 1.2. */
disk->d_fwsectors = 128;
disk->d_fwheads = 15;
} else if (disk->d_mediasize < MEDIASIZE_120G) {
disk->d_fwsectors = 255;
disk->d_fwheads = 15;
} else {
/* XXX */
disk->d_fwsectors = 255;
disk->d_fwheads = 255;
}
}
/* Compatible with the revision 1.28. */
static void
pc98_ata_disk_geom_adjust_cyl16bit(struct disk *disk)
{
off_t totsec = disk->d_mediasize / disk->d_sectorsize;
off_t cyl = totsec / disk->d_fwsectors / disk->d_fwheads;
/*
* It is impossible to have more than 65535 cylinders, so if
* we have more then try to adjust. This is lame, but it is
* only POC.
*/
if (cyl > 65355) {
if (totsec < 17*8*65535) {
disk->d_fwsectors = 17;
disk->d_fwheads = 8;
} else if (totsec < 63*16*65535) {
disk->d_fwsectors = 63;
disk->d_fwheads = 16;
} else if (totsec < 255*16*65535) {
disk->d_fwsectors = 255;
disk->d_fwheads = 16;
} else {
disk->d_fwsectors = 255;
disk->d_fwheads = 255;
}
}
}
void
pc98_ata_disk_firmware_geom_adjust(struct disk *disk)
{
u_int oldsectors, oldheads;
oldsectors = disk->d_fwsectors;
oldheads = disk->d_fwheads;
switch (ad_geom_method) {
case AD_GEOM_ADJUST_COMPATIDE:
pc98_ata_disk_geom_adjust_idebios(disk);
break;
case AD_GEOM_ADJUST_COMPATSCSI:
pc98_ata_disk_geom_adjust_scsibios(disk);
break;
case AD_GEOM_ADJUST_COMPATCYL16:
pc98_ata_disk_geom_adjust_cyl16bit(disk);
break;
default:
/* Do nothing. */
break;
}
if (bootverbose &&
(oldsectors != disk->d_fwsectors || oldheads != disk->d_fwheads))
printf(
"%s%d: geometry adjusted from [%dH/%dS] to [%dH/%dS]\n",
disk->d_name, disk->d_unit,
oldheads, oldsectors,
disk->d_fwheads, disk->d_fwsectors);
}