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    Subject[PATCH] SMM BIOS on Dell i8100
    Hello,

    First, a very big thanx to Massimo for this great piece of code :-)
    I've been trying to catch those events with no sucess for weeks.

    I've got a Dell Inspiron 8100, which seems to differ slightly from
    i8000. Here is a patch that fixes that. Please do not hesitate to ask me
    to test some new code or anything on my laptop.

    You should also replace your printk("string") with printk(KERN_INFO "string")


    PS : Massimo, which version of setmixer do you use ? mine doesn't
    support {+|-}val syntax... (debian sid, setmixer 27DEC94-4)

    Thanks,



    --- /home/kwisatz/i8kutils-1.1/i8k.c Fri Nov 2 16:02:24 2001
    +++ drivers/char/i8k.c Mon Nov 5 01:06:31 2001
    @@ -1,5 +1,5 @@
    /*
    - * i8k.c -- Linux driver for accessing the SMM BIOS on Dell I8000 laptops
    + * i8k.c -- Linux driver for accessing the SMM BIOS on Dell I8x00 laptops
    *
    * Copyright (C) 2001 Massimo Dal Zotto <dz@debian.org>
    *
    @@ -25,7 +25,7 @@
    #include <linux/i8k.h>
    =20
    #define I8K_VERSION "1.1 02/11/2001"
    -#define I8K_BIOS_SIGNATURE "Dell System Inspiron 8000"
    +#define I8K_BIOS_SIGNATURE "Dell System Inspiron 8"
    #define I8K_BIOS_SIGNATURE_ADDR 0x000ec000
    #define I8K_BIOS_VERSION_OFFSET 32
    =20
    @@ -40,10 +40,10 @@
    #define I8K_FAN_MULT 30
    #define I8K_MAX_TEMP 127
    =20
    -#define I8K_FN_NONE 0x08
    -#define I8K_FN_UP 0x09
    -#define I8K_FN_DOWN 0x0a
    -#define I8K_FN_MUTE 0x0c
    +#define I8K_FN_NONE 0x00
    +#define I8K_FN_UP 0x01
    +#define I8K_FN_DOWN 0x02
    +#define I8K_FN_MUTE 0x04
    =20
    #define I8K_POWER_AC 0x05
    #define I8K_POWER_BATTERY 0x01
    @@ -56,10 +56,10 @@
    int force =3D 0;
    =20
    MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)");
    -MODULE_DESCRIPTION("Driver for accessing the SMM BIOS on Dell I8000 laptop=
    s");
    +MODULE_DESCRIPTION("Driver for accessing the SMM BIOS on Dell I8x00 laptop=
    s");
    MODULE_LICENSE("GPL");
    MODULE_PARM(force, "i");
    -MODULE_PARM_DESC(force, "Force loading without checking for an Inspiron 80=
    00");
    +MODULE_PARM_DESC(force, "Force loading without checking for an Inspiron 8x=
    00");
    =20
    static ssize_t i8k_read(struct file *, char *, size_t, loff_t *);
    static int i8k_ioctl(struct inode *, struct file *, unsigned int,
    @@ -157,7 +157,7 @@
    return rc;
    }
    =20
    - switch ((regs.eax & 0xff00) >> 8) {
    + switch ((regs.eax & 0x0700) >> 8) {
    case I8K_FN_UP:
    return I8K_VOL_UP;
    case I8K_FN_DOWN:
    @@ -439,7 +439,7 @@
    }
    =20
    /*
    - * Probe for the presence of an Inspiron I8000.
    + * Probe for the presence of an Inspiron I8x00.
    */
    static int i8k_probe(void)
    {
    @@ -458,8 +458,9 @@
    printk("i8k: ioremap failed\n");
    return -ENODEV;
    }
    - if (strncmp(buff,I8K_BIOS_SIGNATURE,sizeof(I8K_BIOS_SIGNATURE)) !=3D 0) {
    - printk("i8k: Inspiron 8000 BIOS signature not found\n");
    + if (strncmp(buff,I8K_BIOS_SIGNATURE,sizeof(I8K_BIOS_SIGNATURE) - 1) !=3D =
    0) {
    + // -1 because we don't wan't to check for \0 at the end
    + printk("i8k: Inspiron 8x00 BIOS signature not found\n");
    iounmap(buff);
    return -ENODEV;
    }
    @@ -475,7 +476,7 @@
    }
    for (p=3Dbuff; (p-buff)<(0x00100000-0x000c0000); p+=3D16) {
    if (strncmp(p,I8K_BIOS_SIGNATURE,sizeof(I8K_BIOS_SIGNATURE))=3D=3D0) {
    - printk("i8k: Inspiron 8000 BIOS signature found at %08x\n",
    + printk("i8k: Inspiron 8x00 BIOS signature found at %08x\n",
    0x000c0000+(p-buff));
    break;
    }
    @@ -518,7 +519,7 @@
    {
    struct proc_dir_entry *proc_i8k;
    =20
    - /* Are we running on an Inspiron 8000 laptop? */
    + /* Are we running on an Inspiron 8x00 laptop? */
    if (i8k_probe() !=3D 0) {
    return -ENODEV;
    }
    @@ -532,7 +533,7 @@
    SET_MODULE_OWNER(proc_i8k);
    =20
    printk(KERN_INFO
    - "Inspiron 8000 SMM driver v%s Massimo Dal Zotto (dz@debian.org)\n",
    + "Inspiron 8x00 SMM driver v%s Massimo Dal Zotto (dz@debian.org)\n",
    I8K_VERSION);
    =20
    return 0;


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