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Subject[PATCH][RFC] add support for PC-9800 architecture (1/26) apm
This patchset adds support for NEC PC-9800 architecture, against 2.5.43.
I've split big patch to small pieces.
Please apply this patchset.

I have simple test 2.5.43 with this patchset on some boxes.
- PC-9800 i586 UP with IDE drive
- PC-9800 i686 SMP with SCSI drive
- AT compatible with IDE drive (patch applied but not set CONFIG_PC9800).
They works well.

This is part 1/26 of patchset.

Summary:
APM related modules
- adapted to BIOS spec. differences.

diffstat:
arch/i386/kernel/apm.c | 54 +++++++++++++++++++++++++++++++++++++++++++----
include/linux/apm_bios.h | 24 ++++++++++++++++++++
2 files changed, 74 insertions(+), 4 deletions(-)

diff -urN linux/arch/i386/kernel/apm.c linux98/arch/i386/kernel/apm.c
--- linux/arch/i386/kernel/apm.c Sat Oct 12 13:21:05 2002
+++ linux98/arch/i386/kernel/apm.c Sun Oct 13 09:44:00 2002
@@ -223,6 +223,8 @@

#include <linux/sysrq.h>

+#include "io_ports.h"
+
extern rwlock_t xtime_lock;
extern spinlock_t i8253_lock;
extern unsigned long get_cmos_time(void);
@@ -588,6 +590,9 @@
__asm__ __volatile__(APM_DO_ZERO_SEGS
"pushl %%edi\n\t"
"pushl %%ebp\n\t"
+#ifdef CONFIG_PC9800
+ "pushfl\n\t"
+#endif
"lcall *%%cs:apm_bios_entry\n\t"
"setc %%al\n\t"
"popl %%ebp\n\t"
@@ -643,6 +648,9 @@
__asm__ __volatile__(APM_DO_ZERO_SEGS
"pushl %%edi\n\t"
"pushl %%ebp\n\t"
+#ifdef CONFIG_PC9800
+ "pushfl\n\t"
+#endif
"lcall *%%cs:apm_bios_entry\n\t"
"setc %%bl\n\t"
"popl %%ebp\n\t"
@@ -896,6 +904,7 @@

static void apm_power_off(void)
{
+#ifndef CONFIG_PC9800
unsigned char po_bios_call[] = {
0xb8, 0x00, 0x10, /* movw $0x1000,ax */
0x8e, 0xd0, /* movw ax,ss */
@@ -905,6 +914,7 @@
0xb9, 0x03, 0x00, /* movw $0x0003,cx */
0xcd, 0x15 /* int $0x15 */
};
+#endif

/*
* This may be called on an SMP machine.
@@ -919,7 +929,11 @@
}
#endif
if (apm_info.realmode_power_off)
+#ifndef CONFIG_PC9800
machine_real_restart(po_bios_call, sizeof(po_bios_call));
+#else
+ printk("PC-9800 does not support Realmode Power OFF\n");
+#endif
else
(void) set_system_power_state(APM_STATE_OFF);
}
@@ -1174,11 +1188,11 @@
{
#ifdef INIT_TIMER_AFTER_SUSPEND
/* set the clock to 100 Hz */
- outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */
+ outb_p(0x34, PIT_MODE); /* binary, mode 2, LSB/MSB, ch 0 */
udelay(10);
- outb_p(LATCH & 0xff , 0x40); /* LSB */
+ outb_p(LATCH & 0xff, PIT_CH0); /* LSB */
udelay(10);
- outb(LATCH >> 8 , 0x40); /* MSB */
+ outb(LATCH >> 8, PIT_CH0); /* MSB */
udelay(10);
#endif
}
@@ -1653,7 +1667,12 @@
-1: Unknown
8) min = minutes; sec = seconds */

- p += sprintf(p, "%s %d.%d 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
+ p += sprintf(p,
+#ifndef CONFIG_PC9800
+ "%s %d.%d 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
+#else
+ "%s %d.%02x 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
+#endif
driver_version,
(apm_info.bios.version >> 8) & 0xff,
apm_info.bios.version & 0xff,
@@ -1677,6 +1696,8 @@
char * power_stat;
char * bat_stat;

+#if !defined(CONFIG_PC9800) || !defined(CONFIG_SMP)
+ /* Deamonize causes freeze on PC-9800 SMP box */
kapmd_running = 1;

daemonize();
@@ -1684,6 +1705,7 @@
strcpy(current->comm, "kapmd");
current->flags |= PF_IOTHREAD;
sigfillset(&current->blocked);
+#endif /* !CONFIG_PC9800 || !CONFIG_SMP */

#ifdef CONFIG_SMP
/* 2002/08/01 - WT
@@ -1714,6 +1736,17 @@
/* Fall back to an APM 1.0 connection. */
apm_info.connection_version = 0x100;
}
+#ifdef CONFIG_PC9800
+ else {
+ printk("PC-9801 APM BIOS BUG work around: "
+ "fix connection_version 0x%x to ",
+ apm_info.connection_version);
+ apm_info.connection_version =
+ (apm_info.connection_version & 0xff00)
+ | ((apm_info.connection_version & 0x00f0) >> 4);
+ printk("0x%x\n", apm_info.connection_version);
+ }
+#endif /* CONFIG_PC9800 */
}
}

@@ -1886,7 +1919,11 @@
return -ENODEV;
}
printk(KERN_INFO
+#ifndef CONFIG_PC9800
"apm: BIOS version %d.%d Flags 0x%02x (Driver version %s)\n",
+#else
+ "apm: BIOS version %d.%02x Flags 0x%02x (Driver version %s)\n",
+#endif
((apm_info.bios.version >> 8) & 0xff),
(apm_info.bios.version & 0xff),
apm_info.bios.flags,
@@ -1913,6 +1950,11 @@
if (apm_info.bios.version == 0x001)
apm_info.bios.version = 0x100;

+#ifdef CONFIG_PC9800
+ /* In PC-9800, APM BIOS version is written in BCD...?? */
+ apm_info.bios.version = (apm_info.bios.version & 0xff00)
+ | ((apm_info.bios.version & 0x00f0) >> 4);
+#endif
/* BIOS < 1.2 doesn't set cseg_16_len */
if (apm_info.bios.version < 0x102)
apm_info.bios.cseg_16_len = 0; /* 64k */
@@ -1988,7 +2030,11 @@
if (apm_proc)
SET_MODULE_OWNER(apm_proc);

+#if defined(CONFIG_PC9800) && defined(CONFIG_SMP)
+ apm(0);
+#else
kernel_thread(apm, NULL, CLONE_FS | CLONE_FILES | CLONE_SIGHAND | SIGCHLD);
+#endif

if (num_online_cpus() > 1) {
printk(KERN_NOTICE
diff -urN linux/include/linux/apm_bios.h linux98/include/linux/apm_bios.h
--- linux/include/linux/apm_bios.h Wed Aug 28 09:52:31 2002
+++ linux98/include/linux/apm_bios.h Wed Aug 28 13:34:09 2002
@@ -20,6 +20,7 @@
typedef unsigned short apm_eventinfo_t;

#ifdef __KERNEL__
+#include <linux/config.h>

#define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8)
#define APM_CS_16 (APM_CS + 8)
@@ -60,6 +61,7 @@
/*
* The APM function codes
*/
+#ifndef CONFIG_PC9800
#define APM_FUNC_INST_CHECK 0x5300
#define APM_FUNC_REAL_CONN 0x5301
#define APM_FUNC_16BIT_CONN 0x5302
@@ -80,6 +82,28 @@
#define APM_FUNC_RESUME_TIMER 0x5311
#define APM_FUNC_RESUME_ON_RING 0x5312
#define APM_FUNC_TIMER 0x5313
+#else
+#define APM_FUNC_INST_CHECK 0x9a00
+#define APM_FUNC_REAL_CONN 0x9a01
+#define APM_FUNC_16BIT_CONN 0x9a02
+#define APM_FUNC_32BIT_CONN 0x9a03
+#define APM_FUNC_DISCONN 0x9a04
+#define APM_FUNC_IDLE 0x9a05
+#define APM_FUNC_BUSY 0x9a06
+#define APM_FUNC_SET_STATE 0x9a07
+#define APM_FUNC_ENABLE_PM 0x9a08
+#define APM_FUNC_RESTORE_BIOS 0x9a09
+#define APM_FUNC_GET_STATUS 0x9a3a
+#define APM_FUNC_GET_EVENT 0x9a0b
+#define APM_FUNC_GET_STATE 0x9a0c
+#define APM_FUNC_ENABLE_DEV_PM 0x9a0d
+#define APM_FUNC_VERSION 0x9a3e
+#define APM_FUNC_ENGAGE_PM 0x9a3f
+#define APM_FUNC_GET_CAP 0x9a10
+#define APM_FUNC_RESUME_TIMER 0x9a11
+#define APM_FUNC_RESUME_ON_RING 0x9a12
+#define APM_FUNC_TIMER 0x9a13
+#endif

/*
* Function code for APM_FUNC_RESUME_TIMER
-
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