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path: root/drivers/char/toshiba.c
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Diffstat (limited to 'drivers/char/toshiba.c')
-rw-r--r--drivers/char/toshiba.c92
1 files changed, 59 insertions, 33 deletions
diff --git a/drivers/char/toshiba.c b/drivers/char/toshiba.c
index 0c6f521abd0..014c9d90d29 100644
--- a/drivers/char/toshiba.c
+++ b/drivers/char/toshiba.c
@@ -58,7 +58,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/miscdevice.h>
@@ -68,7 +67,8 @@
#include <linux/init.h>
#include <linux/stat.h>
#include <linux/proc_fs.h>
-
+#include <linux/seq_file.h>
+#include <linux/mutex.h>
#include <linux/toshiba.h>
#define TOSH_MINOR_DEV 181
@@ -78,6 +78,7 @@ MODULE_AUTHOR("Jonathan Buzzard <jonathan@buzzard.org.uk>");
MODULE_DESCRIPTION("Toshiba laptop SMM driver");
MODULE_SUPPORTED_DEVICE("toshiba");
+static DEFINE_MUTEX(tosh_mutex);
static int tosh_fn;
module_param_named(fn, tosh_fn, int, 0);
MODULE_PARM_DESC(fn, "User specified Fn key detection port");
@@ -88,13 +89,14 @@ static int tosh_date;
static int tosh_sci;
static int tosh_fan;
-static int tosh_ioctl(struct inode *, struct file *, unsigned int,
+static long tosh_ioctl(struct file *, unsigned int,
unsigned long);
-static struct file_operations tosh_fops = {
+static const struct file_operations tosh_fops = {
.owner = THIS_MODULE,
- .ioctl = tosh_ioctl,
+ .unlocked_ioctl = tosh_ioctl,
+ .llseek = noop_llseek,
};
static struct miscdevice tosh_device = {
@@ -249,10 +251,10 @@ int tosh_smm(SMMRegisters *regs)
return eax;
}
+EXPORT_SYMBOL(tosh_smm);
-static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
- unsigned long arg)
+static long tosh_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
{
SMMRegisters regs;
SMMRegisters __user *argp = (SMMRegisters __user *)arg;
@@ -274,13 +276,16 @@ static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
return -EINVAL;
/* do we need to emulate the fan ? */
+ mutex_lock(&tosh_mutex);
if (tosh_fan==1) {
if (((ax==0xf300) || (ax==0xf400)) && (bx==0x0004)) {
err = tosh_emulate_fan(&regs);
+ mutex_unlock(&tosh_mutex);
break;
}
}
err = tosh_smm(&regs);
+ mutex_unlock(&tosh_mutex);
break;
default:
return -EINVAL;
@@ -297,12 +302,10 @@ static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
* Print the information for /proc/toshiba
*/
#ifdef CONFIG_PROC_FS
-static int tosh_get_info(char *buffer, char **start, off_t fpos, int length)
+static int proc_toshiba_show(struct seq_file *m, void *v)
{
- char *temp;
int key;
- temp = buffer;
key = tosh_fn_status();
/* Arguments
@@ -313,8 +316,7 @@ static int tosh_get_info(char *buffer, char **start, off_t fpos, int length)
4) BIOS date (in SCI date format)
5) Fn Key status
*/
-
- temp += sprintf(temp, "1.1 0x%04x %d.%d %d.%d 0x%04x 0x%02x\n",
+ seq_printf(m, "1.1 0x%04x %d.%d %d.%d 0x%04x 0x%02x\n",
tosh_id,
(tosh_sci & 0xff00)>>8,
tosh_sci & 0xff,
@@ -322,9 +324,21 @@ static int tosh_get_info(char *buffer, char **start, off_t fpos, int length)
tosh_bios & 0xff,
tosh_date,
key);
+ return 0;
+}
- return temp-buffer;
+static int proc_toshiba_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, proc_toshiba_show, NULL);
}
+
+static const struct file_operations proc_toshiba_fops = {
+ .owner = THIS_MODULE,
+ .open = proc_toshiba_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
#endif
@@ -355,14 +369,14 @@ static void tosh_set_fn_port(void)
/*
* Get the machine identification number of the current model
*/
-static int tosh_get_machine_id(void)
+static int tosh_get_machine_id(void __iomem *bios)
{
int id;
SMMRegisters regs;
unsigned short bx,cx;
unsigned long address;
- id = (0x100*(int) isa_readb(0xffffe))+((int) isa_readb(0xffffa));
+ id = (0x100*(int) readb(bios+0xfffe))+((int) readb(bios+0xfffa));
/* do we have a SCTTable machine identication number on our hands */
@@ -388,12 +402,12 @@ static int tosh_get_machine_id(void)
/* now twiddle with our pointer a bit */
- address = 0x000f0000+bx;
- cx = isa_readw(address);
- address = 0x000f0009+bx+cx;
- cx = isa_readw(address);
- address = 0x000f000a+cx;
- cx = isa_readw(address);
+ address = bx;
+ cx = readw(bios + address);
+ address = 9+bx+cx;
+ cx = readw(bios + address);
+ address = 0xa+cx;
+ cx = readw(bios + address);
/* now construct our machine identification number */
@@ -416,13 +430,18 @@ static int tosh_probe(void)
int i,major,minor,day,year,month,flag;
unsigned char signature[7] = { 0x54,0x4f,0x53,0x48,0x49,0x42,0x41 };
SMMRegisters regs;
+ void __iomem *bios = ioremap_cache(0xf0000, 0x10000);
+
+ if (!bios)
+ return -ENOMEM;
/* extra sanity check for the string "TOSHIBA" in the BIOS because
some machines that are not Toshiba's pass the next test */
for (i=0;i<7;i++) {
- if (isa_readb(0xfe010+i)!=signature[i]) {
+ if (readb(bios+0xe010+i)!=signature[i]) {
printk("toshiba: not a supported Toshiba laptop\n");
+ iounmap(bios);
return -ENODEV;
}
}
@@ -438,6 +457,7 @@ static int tosh_probe(void)
if ((flag==1) || ((regs.eax & 0xff00)==0x8600)) {
printk("toshiba: not a supported Toshiba laptop\n");
+ iounmap(bios);
return -ENODEV;
}
@@ -447,19 +467,19 @@ static int tosh_probe(void)
/* next get the machine ID of the current laptop */
- tosh_id = tosh_get_machine_id();
+ tosh_id = tosh_get_machine_id(bios);
/* get the BIOS version */
- major = isa_readb(0xfe009)-'0';
- minor = ((isa_readb(0xfe00b)-'0')*10)+(isa_readb(0xfe00c)-'0');
+ major = readb(bios+0xe009)-'0';
+ minor = ((readb(bios+0xe00b)-'0')*10)+(readb(bios+0xe00c)-'0');
tosh_bios = (major*0x100)+minor;
/* get the BIOS date */
- day = ((isa_readb(0xffff5)-'0')*10)+(isa_readb(0xffff6)-'0');
- month = ((isa_readb(0xffff8)-'0')*10)+(isa_readb(0xffff9)-'0');
- year = ((isa_readb(0xffffb)-'0')*10)+(isa_readb(0xffffc)-'0');
+ day = ((readb(bios+0xfff5)-'0')*10)+(readb(bios+0xfff6)-'0');
+ month = ((readb(bios+0xfff8)-'0')*10)+(readb(bios+0xfff9)-'0');
+ year = ((readb(bios+0xfffb)-'0')*10)+(readb(bios+0xfffc)-'0');
tosh_date = (((year-90) & 0x1f)<<10) | ((month & 0xf)<<6)
| ((day & 0x1f)<<1);
@@ -476,6 +496,8 @@ static int tosh_probe(void)
if ((tosh_id==0xfccb) || (tosh_id==0xfccc))
tosh_fan = 1;
+ iounmap(bios);
+
return 0;
}
@@ -487,7 +509,7 @@ static int __init toshiba_init(void)
if (tosh_probe())
return -ENODEV;
- printk(KERN_INFO "Toshiba System Managment Mode driver v" TOSH_VERSION "\n");
+ printk(KERN_INFO "Toshiba System Management Mode driver v" TOSH_VERSION "\n");
/* set the port to use for Fn status if not specified as a parameter */
if (tosh_fn==0x00)
@@ -499,10 +521,14 @@ static int __init toshiba_init(void)
return retval;
#ifdef CONFIG_PROC_FS
- /* register the proc entry */
- if (create_proc_info_entry("toshiba", 0, NULL, tosh_get_info) == NULL) {
- misc_deregister(&tosh_device);
- return -ENOMEM;
+ {
+ struct proc_dir_entry *pde;
+
+ pde = proc_create("toshiba", 0, NULL, &proc_toshiba_fops);
+ if (!pde) {
+ misc_deregister(&tosh_device);
+ return -ENOMEM;
+ }
}
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 19:13:29 +0000