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SubjectRe: [PATCH] PnPBIOS 2.4.9-ac1[56] Vaio fix
Date
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Here's the patch to the PnP BIOS driver for Vaio laptops again,
this time against 2.4.9-ac18. It's unchanged, but as per the
"SubmittingPatches" file, I append rather than attach it.
// Thomas


diff -Naur linux-2.4.9-ac16/drivers/pnp/pnp_bios.c linux-2.4.9-ac16-pnpbiosfix/drivers/pnp/pnp_bios.c
--- linux-2.4.9-ac16/drivers/pnp/pnp_bios.c Fri Sep 28 15:35:07 2001
+++ linux-2.4.9-ac16-pnpbiosfix/drivers/pnp/pnp_bios.c Fri Sep 28 17:32:24 2001
@@ -48,7 +48,8 @@
/* PnP bios signature: "$PnP" */
#define PNP_SIGNATURE (('$' << 0) + ('P' << 8) + ('n' << 16) + ('P' << 24))

-void pnp_proc_init(void);
+extern int is_sony_vaio_laptop;
+
static void pnpbios_build_devlist(void);

/*
@@ -560,6 +561,7 @@
*/

static int pnp_bios_disabled;
+static int pnp_bios_dont_use_current_config;

static int disable_pnp_bios(char *str)
{
@@ -567,7 +569,14 @@
return 0;
}

+static int disable_use_of_current_config(char *str)
+{
+ pnp_bios_dont_use_current_config=1;
+ return 0;
+}
+
__setup("nobiospnp", disable_pnp_bios);
+__setup("nobioscurrpnp", disable_use_of_current_config);

void pnp_bios_init(void)
{
@@ -582,6 +591,10 @@
printk(KERN_INFO "PNP BIOS services disabled.\n");
return;
}
+
+ if ( is_sony_vaio_laptop )
+ pnp_bios_dont_use_current_config = 1;
+
for (check = (union pnpbios *) __va(0xf0000);
check < (union pnpbios *) __va(0xffff0);
((void *) (check)) += 16) {
@@ -616,7 +629,7 @@
}
pnpbios_build_devlist();
#ifdef CONFIG_PROC_FS
- pnp_proc_init();
+ pnp_proc_init( pnp_bios_dont_use_current_config );
#endif
#ifdef CONFIG_HOTPLUG
init_completion(&unload_sem);
@@ -846,8 +859,10 @@
dev = kmalloc(sizeof (struct pci_dev), GFP_KERNEL);
if (!dev)
break;
-
- if (pnp_bios_get_dev_node((u8 *)&num, (char )0 , node))
+
+ // For now we scan the "boot" config because some BIOSes
+ // oops when their "current" configs are accessed
+ if (pnp_bios_get_dev_node((u8 *)&num, (char )1 , node))
continue;

devs++;
diff -Naur linux-2.4.9-ac16/drivers/pnp/pnp_proc.c linux-2.4.9-ac16-pnpbiosfix/drivers/pnp/pnp_proc.c
--- linux-2.4.9-ac16/drivers/pnp/pnp_proc.c Fri Sep 28 15:35:07 2001
+++ linux-2.4.9-ac16-pnpbiosfix/drivers/pnp/pnp_proc.c Fri Sep 28 16:53:47 2001
@@ -33,7 +33,7 @@
node = kmalloc(node_info.max_node_size, GFP_KERNEL);
if (!node) return -ENOMEM;
for (num = 0; num != 0xff; ) {
- pnp_bios_get_dev_node(&num, 0, node);
+ pnp_bios_get_dev_node(&num, 1, node);
p += sprintf(p, "%02x\t%08x\t%02x:%02x:%02x\t%04x\n",
node->handle, node->eisa_id,
node->type_code[0], node->type_code[1],
@@ -83,13 +83,17 @@
return count;
}

-void pnp_proc_init(void)
+static int pnp_proc_dont_use_current_config;
+
+void pnp_proc_init( int dont_use_current )
{
struct pnp_bios_node *node;
struct proc_dir_entry *ent;
char name[3];
u8 num;

+ pnp_proc_dont_use_current_config = dont_use_current;
+
if (!pnp_bios_present()) return;
if (pnp_bios_dev_node_info(&node_info) != 0)
return;
@@ -105,14 +109,16 @@
if (!node) return;
for (num = 0; num != 0xff; ) {
//sprintf(name, "%02x", num);
- if (pnp_bios_get_dev_node(&num, 0, node) != 0)
+ if (pnp_bios_get_dev_node(&num, 1, node) != 0)
break;
sprintf(name, "%02x", node->handle);
- ent = create_proc_entry(name, 0, proc_pnp);
- if (ent) {
- ent->read_proc = proc_read_node;
- ent->write_proc = proc_write_node;
- ent->data = (void *)(long)(node->handle);
+ if ( !dont_use_current ) {
+ ent = create_proc_entry(name, 0, proc_pnp);
+ if (ent) {
+ ent->read_proc = proc_read_node;
+ ent->write_proc = proc_write_node;
+ ent->data = (void *)(long)(node->handle);
+ }
}
ent = create_proc_entry(name, 0, proc_pnp_boot);
if (ent) {
@@ -132,7 +138,8 @@
if (!proc_pnp) return;
for (num = 0; num != 0xff; num++) {
sprintf(name, "%02x", num);
- remove_proc_entry(name, proc_pnp);
+ if ( !pnp_proc_dont_use_current_config )
+ remove_proc_entry(name, proc_pnp);
remove_proc_entry(name, proc_pnp_boot);
}
remove_proc_entry("boot", proc_pnp);
diff -Naur linux-2.4.9-ac16/include/linux/pnp_bios.h linux-2.4.9-ac16-pnpbiosfix/include/linux/pnp_bios.h
--- linux-2.4.9-ac16/include/linux/pnp_bios.h Fri Sep 28 15:35:42 2001
+++ linux-2.4.9-ac16-pnpbiosfix/include/linux/pnp_bios.h Fri Sep 28 16:55:47 2001
@@ -146,6 +146,8 @@
extern int pnp_bios_read_escd (char *data, u32 nvram_base);
extern int pnp_bios_write_escd (char *data, u32 nvram_base);

+extern void pnp_proc_init ( int dont_use_current );
+
#ifdef CONFIG_PNPBIOS
#define pnpbios_for_each_dev(dev) \
for(dev = pnpbios_dev_g(pnpbios_devices.next); dev != pnpbios_dev_g(&pnpbios_devices); dev = pnpbios_dev_g(dev->global_list.next))
diff -Naur linux-2.4.9-ac16/arch/i386/kernel/dmi_scan.c linux-2.4.9-ac16-pnpbiosfix/arch/i386/kernel/dmi_scan.c
--- linux-2.4.9-ac16/arch/i386/kernel/dmi_scan.c Fri Sep 28 15:34:12 2001
+++ linux-2.4.9-ac16-pnpbiosfix/arch/i386/kernel/dmi_scan.c Fri Sep 28 17:04:17 2001
@@ -313,14 +313,12 @@
return 0;
}

-#if defined(CONFIG_SONYPI) || defined(CONFIG_SONYPI_MODULE)
/*
- * Check for a Sony Vaio system in order to enable the use of
- * the sonypi driver (we don't want this driver to be used on
- * other systems, even if they have the good PCI IDs).
+ * Check for a Sony Vaio system
*
- * This one isn't a bug detect for those who asked, we simply want to
- * activate Sony specific goodies like the camera and jogdial..
+ * On a Sony system we want to enable the use of the sonypi
+ * driver for Sony-specific goodies like the camera and jogdial.
+ * We also want to avoid using certain functions of the PnP BIOS.
*/
int is_sony_vaio_laptop;

@@ -333,7 +331,6 @@
}
return 0;
}
-#endif

/*
* This bios swaps the APM minute reporting bytes over (Many sony laptops
@@ -459,13 +456,11 @@
MATCH(DMI_BIOS_VENDOR,"SystemSoft"),
MATCH(DMI_BIOS_VERSION,"Version R2.08")
} },
-#if defined(CONFIG_SONYPI) || defined(CONFIG_SONYPI_MODULE)
{ sony_vaio_laptop, "Sony Vaio", { /* This is a Sony Vaio laptop */
MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
MATCH(DMI_PRODUCT_NAME, "PCG-"),
NO_MATCH, NO_MATCH,
} },
-#endif
{ swab_apm_power_in_minutes, "Sony VAIO", { /* Handle problems with APM on Sony Vaio PCG-N505X(DE) */
MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
MATCH(DMI_BIOS_VERSION, "R0206H"),
diff -Naur linux-2.4.9-ac16/arch/i386/kernel/i386_ksyms.c linux-2.4.9-ac16-pnpbiosfix/arch/i386/kernel/i386_ksyms.c
--- linux-2.4.9-ac16/arch/i386/kernel/i386_ksyms.c Fri Sep 28 15:34:12 2001
+++ linux-2.4.9-ac16-pnpbiosfix/arch/i386/kernel/i386_ksyms.c Fri Sep 28 17:41:12 2001
@@ -171,8 +171,6 @@
EXPORT_SYMBOL(do_BUG);
#endif

-#if defined(CONFIG_SONYPI) || defined(CONFIG_SONYPI_MODULE)
extern int is_sony_vaio_laptop;
EXPORT_SYMBOL(is_sony_vaio_laptop);
-#endif

-
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