| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sun, 14 Oct 2007 23:07:02 -0600
From: Jim Cromie <jim.cromie@...il.com>
To: Linux kernel <linux-kernel@...r.kernel.org>,
LM Sensors <lm-sensors@...sensors.org>
Subject: [ patch .24-rc0 2/5 ] SuperIO locks coordinator - use in hwmon/w83627hf
02 - use superio-locks in drivers/hwmon/w83627hf.c
tested on an AMD-Barton mobo.
Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
hwmon-superio-w83627hf
Kconfig | 1
w83627hf.c | 140 ++++++++++++++++++++++++-------------------------------------
2 files changed, 58 insertions(+), 83 deletions(-)
diff -ruNp -X dontdiff -X exclude-diffs hwmon-fan-push-offset/drivers/hwmon/Kconfig hwmon-superio.old/drivers/hwmon/Kconfig
--- hwmon-fan-push-offset/drivers/hwmon/Kconfig 2007-10-14 13:00:24.000000000 -0600
+++ hwmon-superio.old/drivers/hwmon/Kconfig 2007-10-14 17:22:23.000000000 -0600
@@ -675,6 +688,7 @@ config SENSORS_W83L785TS
config SENSORS_W83627HF
tristate "Winbond W83627HF, W83627THF, W83637HF, W83687THF, W83697HF"
select HWMON_VID
+ select SUPERIO_LOCKS
help
If you say yes here you get support for the Winbond W836X7 series
of sensor chips: the W83627HF, W83627THF, W83637HF, W83687THF and
diff -ruNp -X dontdiff -X exclude-diffs hwmon-fan-push-offset/drivers/hwmon/w83627hf.c hwmon-superio.old/drivers/hwmon/w83627hf.c
--- hwmon-fan-push-offset/drivers/hwmon/w83627hf.c 2007-10-14 17:13:47.000000000 -0600
+++ hwmon-superio.old/drivers/hwmon/w83627hf.c 2007-10-14 17:22:23.000000000 -0600
@@ -50,6 +50,7 @@
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/ioport.h>
+#include <linux/superio-locks.h>
#include <asm/io.h>
#include "lm75.h"
@@ -75,11 +76,6 @@ static int init = 1;
module_param(init, bool, 0);
MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
-/* modified from kernel/include/traps.c */
-static int REG; /* The register to read/write */
-#define DEV 0x07 /* Register: Logical device select */
-static int VAL; /* The value to read/write */
-
/* logical device numbers for superio_select (below) */
#define W83627HF_LD_FDC 0x00
#define W83627HF_LD_PRT 0x01
@@ -97,8 +93,6 @@ static int VAL; /* The value to read/wr
#define W83627HF_LD_ACPI 0x0a
#define W83627HF_LD_HWM 0x0b
-#define DEVID 0x20 /* Register: Device ID */
-
#define W83627THF_GPIO5_EN 0x30 /* w83627thf only */
#define W83627THF_GPIO5_IOSR 0xf3 /* w83627thf only */
#define W83627THF_GPIO5_DR 0xf4 /* w83627thf only */
@@ -107,47 +101,25 @@ static int VAL; /* The value to read/wr
#define W83687THF_VID_CFG 0xF0 /* w83687thf only */
#define W83687THF_VID_DATA 0xF1 /* w83687thf only */
-static inline void
-superio_outb(int reg, int val)
-{
- outb(reg, REG);
- outb(val, VAL);
-}
-
-static inline int
-superio_inb(int reg)
-{
- outb(reg, REG);
- return inb(VAL);
-}
-
-static inline void
-superio_select(int ld)
-{
- outb(DEV, REG);
- outb(ld, VAL);
-}
-
-static inline void
-superio_enter(void)
-{
- outb(0x87, REG);
- outb(0x87, REG);
-}
-
-static inline void
-superio_exit(void)
-{
- outb(0xAA, REG);
-}
+#define W627_DEVID 0x52
+#define W627THF_DEVID 0x82
+#define W697_DEVID 0x60
+#define W637_DEVID 0x70
+#define W687THF_DEVID 0x85
+
+#define WINB_ACT_REG 0x30
+#define WINB_BASE_REG 0x60
+
+static struct superio* gate;
+
+static __devinit struct superio_search where = {
+ .cmdreg_addrs = { 0x2e, 0x4e },
+ .device_ids = { W627_DEVID, W627THF_DEVID, W697_DEVID,
+ W637_DEVID, W687THF_DEVID, 0 },
+ .enter_seq = { 0x87, 0x87, 0 },
+ .exit_seq = { 0xAA, 0 }
+};
-#define W627_DEVID 0x52
-#define W627THF_DEVID 0x82
-#define W697_DEVID 0x60
-#define W637_DEVID 0x70
-#define W687THF_DEVID 0x85
-#define WINB_ACT_REG 0x30
-#define WINB_BASE_REG 0x60
/* Constants specified below */
/* Alignment of the base address */
@@ -995,12 +967,10 @@ show_name(struct device *dev, struct dev
return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
-
-static int __init w83627hf_find(int sioaddr, unsigned short *addr,
- struct w83627hf_sio_data *sio_data)
+
+static u16 __init w83627hf_find(struct w83627hf_sio_data *sio_data)
{
- int err = -ENODEV;
- u16 val;
+ u16 val, addr = 0;
static const __initdata char *names[] = {
"W83627HF",
@@ -1010,11 +980,15 @@ static int __init w83627hf_find(int sioa
"W83687THF",
};
- REG = sioaddr;
- VAL = sioaddr + 1;
+ gate = superio_find(&where);
+ if (!gate) {
+ printk(KERN_WARNING DRVNAME ": superio port not detected, "
+ "module not intalled.\n");
+ return 0;
+ }
+ superio_enter(gate);
+ val = superio_devid(gate);
- superio_enter();
- val= superio_inb(DEVID);
switch (val) {
case W627_DEVID:
sio_data->type = w83627hf;
@@ -1038,36 +1012,34 @@ static int __init w83627hf_find(int sioa
goto exit;
}
- superio_select(W83627HF_LD_HWM);
+ superio_select(gate, W83627HF_LD_HWM);
force_addr &= WINB_ALIGNMENT;
if (force_addr) {
printk(KERN_WARNING DRVNAME ": Forcing address 0x%x\n",
force_addr);
- superio_outb(WINB_BASE_REG, force_addr >> 8);
- superio_outb(WINB_BASE_REG + 1, force_addr & 0xff);
+ superio_outb(gate, WINB_BASE_REG, force_addr >> 8);
+ superio_outb(gate, WINB_BASE_REG + 1, force_addr & 0xff);
}
- val = (superio_inb(WINB_BASE_REG) << 8) |
- superio_inb(WINB_BASE_REG + 1);
- *addr = val & WINB_ALIGNMENT;
- if (*addr == 0) {
+ val = superio_inw(gate, WINB_BASE_REG);
+ addr = val & WINB_ALIGNMENT;
+ if (addr == 0) {
printk(KERN_WARNING DRVNAME ": Base address not set, "
"skipping\n");
goto exit;
}
- val = superio_inb(WINB_ACT_REG);
+ val = superio_inb(gate, WINB_ACT_REG);
if (!(val & 0x01)) {
printk(KERN_WARNING DRVNAME ": Enabling HWM logical device\n");
- superio_outb(WINB_ACT_REG, val | 0x01);
+ superio_outb(gate, WINB_ACT_REG, val | 0x01);
}
- err = 0;
pr_info(DRVNAME ": Found %s chip at %#x\n",
- names[sio_data->type], *addr);
+ names[sio_data->type], addr);
exit:
- superio_exit();
- return err;
+ superio_exit(gate);
+ return addr;
}
#define VIN_UNIT_ATTRS(_X_) \
@@ -1337,18 +1309,18 @@ static int __devinit w83627thf_read_gpio
{
int res = 0xff, sel;
- superio_enter();
- superio_select(W83627HF_LD_GPIO5);
+ superio_enter(gate);
+ superio_select(gate, W83627HF_LD_GPIO5);
/* Make sure these GPIO pins are enabled */
- if (!(superio_inb(W83627THF_GPIO5_EN) & (1<<3))) {
+ if (!(superio_inb(gate, W83627THF_GPIO5_EN) & (1<<3))) {
dev_dbg(&pdev->dev, "GPIO5 disabled, no VID function\n");
goto exit;
}
/* Make sure the pins are configured for input
There must be at least five (VRM 9), and possibly 6 (VRM 10) */
- sel = superio_inb(W83627THF_GPIO5_IOSR) & 0x3f;
+ sel = superio_inb(gate, W83627THF_GPIO5_IOSR) & 0x3f;
if ((sel & 0x1f) != 0x1f) {
dev_dbg(&pdev->dev, "GPIO5 not configured for VID "
"function\n");
@@ -1356,10 +1328,10 @@ static int __devinit w83627thf_read_gpio
}
dev_info(&pdev->dev, "Reading VID from GPIO5\n");
- res = superio_inb(W83627THF_GPIO5_DR) & sel;
+ res = superio_inb(gate, W83627THF_GPIO5_DR) & sel;
exit:
- superio_exit();
+ superio_exit(gate);
return res;
}
@@ -1367,26 +1339,26 @@ static int __devinit w83687thf_read_vid(
{
int res = 0xff;
- superio_enter();
- superio_select(W83627HF_LD_HWM);
+ superio_enter(gate);
+ superio_select(gate, W83627HF_LD_HWM);
/* Make sure these GPIO pins are enabled */
- if (!(superio_inb(W83687THF_VID_EN) & (1 << 2))) {
+ if (!(superio_inb(gate, W83687THF_VID_EN) & (1 << 2))) {
dev_dbg(&pdev->dev, "VID disabled, no VID function\n");
goto exit;
}
/* Make sure the pins are configured for input */
- if (!(superio_inb(W83687THF_VID_CFG) & (1 << 4))) {
+ if (!(superio_inb(gate, W83687THF_VID_CFG) & (1 << 4))) {
dev_dbg(&pdev->dev, "VID configured as output, "
"no VID function\n");
goto exit;
}
- res = superio_inb(W83687THF_VID_DATA) & 0x3f;
+ res = superio_inb(gate, W83687THF_VID_DATA) & 0x3f;
exit:
- superio_exit();
+ superio_exit(gate);
return res;
}
@@ -1669,8 +1641,8 @@ static int __init sensors_w83627hf_init(
unsigned short address;
struct w83627hf_sio_data sio_data;
- if (w83627hf_find(0x2e, &address, &sio_data)
- && w83627hf_find(0x4e, &address, &sio_data))
+ address = w83627hf_find(&sio_data);
+ if (!address)
return -ENODEV;
err = platform_driver_register(&w83627hf_driver);
@@ -1692,6 +1664,8 @@ exit:
static void __exit sensors_w83627hf_exit(void)
{
+ if (gate)
+ superio_release(gate);
platform_device_unregister(pdev);
platform_driver_unregister(&w83627hf_driver);
}
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists