for Dell i 8000 laptops 2 things are important:
1) Compile the kernel without IO APIC support
2) Apply the patch below
with that it works at least for the guy next to me at work ;)
diff -urN Linux/arch/i386/kernel/dmi_scan.c linux/arch/i386/kernel/dmi_scan.c
--- Linux/arch/i386/kernel/dmi_scan.c Thu Apr 11 11:14:41 2002
+++ linux/arch/i386/kernel/dmi_scan.c Thu Apr 11 11:15:28 2002
@@ -499,6 +499,22 @@
}
/*
+ * Dell Inspiron 8000 APM BIOS fails to correctly save and restore the
+ * config space of some PCI devices.
+ */
+
+static __init int broken_apm_pci_restore(struct dmi_blacklist *d)
+{
+#ifdef CONFIG_PCI
+ extern int pci_bridge_force_restore;
+
+ printk(KERN_WARNING "%s detected. Forcing restore of PCI configuration space on APM resume.\n", d->ident);
+ pci_bridge_force_restore = 1;
+#endif
+ return 0;
+}
+
+/*
* Process the DMI blacklists
*/
@@ -779,6 +795,16 @@
MATCH(DMI_SYS_VENDOR, "IBM"),
NO_MATCH, NO_MATCH, NO_MATCH
} },
+ { broken_apm_pci_restore, "Dell Inspiron 8000", { /* Work around broken Dell BIOS */
+ MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
+ MATCH(DMI_PRODUCT_NAME, "Inspiron 8000"),
+ NO_MATCH, NO_MATCH
+ } },
+ { broken_apm_pci_restore, "Dell Inspiron 8100", { /* Work around broken Dell BIOS */
+ MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
+ MATCH(DMI_PRODUCT_NAME, "Inspiron 8100"),
+ NO_MATCH, NO_MATCH
+ } },
{ NULL, }
};
diff -urN Linux/drivers/pci/Makefile linux/drivers/pci/Makefile
--- Linux/drivers/pci/Makefile Thu Apr 11 11:14:25 2002
+++ linux/drivers/pci/Makefile Thu Apr 11 11:15:28 2002
@@ -13,7 +13,7 @@
export-objs := pci.o
-obj-$(CONFIG_PCI) += pci.o quirks.o compat.o names.o
+obj-$(CONFIG_PCI) += pci.o quirks.o compat.o names.o bridge.o
obj-$(CONFIG_PROC_FS) += proc.o
ifndef CONFIG_SPARC64
diff -urN Linux/drivers/pci/bridge.c linux/drivers/pci/bridge.c
--- Linux/drivers/pci/bridge.c Thu Jan 1 01:00:00 1970
+++ linux/drivers/pci/bridge.c Thu Apr 11 11:15:28 2002
@@ -0,0 +1,149 @@
+
+/*
+ * Copyright (c) 2001 Red Hat, Inc. All rights reserved.
+ *
+ * This software may be freely redistributed under the terms
+ * of the GNU public license.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Arjan van de Ven <arjanv@redhat.com>
+ *
+ */
+
+
+/*
+ * Generic PCI driver for PCI bridges for powermanagement purposes
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+static struct pci_device_id bridge_pci_table[] __devinitdata = {
+ {/* handle all PCI bridges */
+ class: ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
+ class_mask: ~0,
+ vendor: PCI_ANY_ID,
+ device: PCI_ANY_ID,
+ subvendor: PCI_ANY_ID,
+ subdevice: PCI_ANY_ID,
+ },
+ {0,},
+};
+
+static int bridge_probe(struct pci_dev *pdev, const struct pci_device_id *id);
+static int pci_bridge_save_state_bus(struct pci_bus *bus, int force);
+int pci_generic_resume_compare(struct pci_dev *pdev);
+
+int pci_bridge_force_restore = 0;
+
+
+
+
+static int __init bridge_setup(char *str)
+{
+ if (!strcmp(str,"force"))
+ pci_bridge_force_restore = 1;
+ else if (!strcmp(str,"noforce"))
+ pci_bridge_force_restore = 0;
+ return 0;
+}
+
+__setup("resume=",bridge_setup);
+
+
+static int pci_bridge_save_state_bus(struct pci_bus *bus, int force)
+{
+ struct list_head *list;
+ int error = 0;
+
+ list_for_each(list, &bus->children) {
+ error = pci_bridge_save_state_bus(pci_bus_b(list),force);
+ if (error) return error;
+ }
+ list_for_each(list, &bus->devices) {
+ pci_generic_suspend_save(pci_dev_b(list),0);
+ }
+ return 0;
+}
+
+
+static int pci_bridge_restore_state_bus(struct pci_bus *bus, int force)
+{
+ struct list_head *list;
+ int error = 0;
+ static int printed_warning=0;
+
+ list_for_each(list, &bus->children) {
+ error = pci_bridge_restore_state_bus(pci_bus_b(list),force);
+ if (error) return error;
+ }
+ list_for_each(list, &bus->devices) {
+ if (force)
+ pci_generic_resume_restore(pci_dev_b(list));
+ else {
+ error = pci_generic_resume_compare(pci_dev_b(list));
+ if (error && !printed_warning++) {
+ printk(KERN_WARNING "resume warning: bios doesn't restore PCI state properly\n");
+ printk(KERN_WARNING "resume warning: if resume failed, try booting with resume=force\n");
+ }
+ if (error)
+ return error;
+ }
+ }
+ return 0;
+}
+
+static int bridge_suspend(struct pci_dev *dev, u32 force)
+{
+ pci_generic_suspend_save(dev,force);
+ if (dev->subordinate)
+ pci_bridge_save_state_bus(dev->subordinate,force);
+ return 0;
+}
+
+static int bridge_resume(struct pci_dev *dev)
+{
+
+ pci_generic_resume_restore(dev);
+ if (dev->subordinate)
+ pci_bridge_restore_state_bus(dev->subordinate,pci_bridge_force_restore);
+ return 0;
+}
+
+
+MODULE_DEVICE_TABLE(pci, bridge_pci_table);
+static struct pci_driver bridge_ops = {
+ name: "PCI Bridge",
+ id_table: bridge_pci_table,
+ probe: bridge_probe,
+ suspend: bridge_suspend,
+ resume: bridge_resume
+};
+
+static int __devinit bridge_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ return 0;
+}
+
+static int __init bridge_init(void)
+{
+ pci_register_driver(&bridge_ops);
+ return 0;
+}
+
+static void __exit bridge_exit(void)
+{
+ pci_unregister_driver(&bridge_ops);
+}
+
+
+module_init(bridge_init)
+module_exit(bridge_exit)
+
diff -urN Linux/drivers/pci/pci.c linux/drivers/pci/pci.c
--- Linux/drivers/pci/pci.c Thu Apr 11 11:14:40 2002
+++ linux/drivers/pci/pci.c Thu Apr 11 11:15:28 2002
@@ -357,6 +357,48 @@
return 0;
}
+int
+pci_compare_state(struct pci_dev *dev, u32 *buffer)
+{
+ int i;
+ unsigned int temp;
+
+ if (buffer) {
+ for (i = 0; i < 16; i++) {
+ pci_read_config_dword(dev,i*4,&temp);
+ if (temp!=buffer[i])
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int pci_generic_suspend_save(struct pci_dev *pdev, u32 state)
+{
+ if (pdev)
+ pci_save_state(pdev,pdev->saved_state);
+ return 0;
+}
+
+int pci_generic_resume_restore(struct pci_dev *pdev)
+{
+ if (pdev)
+ pci_restore_state(pdev,pdev->saved_state);
+ return 0;
+}
+
+int pci_generic_resume_compare(struct pci_dev *pdev)
+{
+ int retval=0;
+ if (pdev)
+ retval = pci_compare_state(pdev,pdev->saved_state);
+ return retval;
+}
+
+EXPORT_SYMBOL(pci_generic_suspend_save);
+EXPORT_SYMBOL(pci_generic_resume_restore);
+EXPORT_SYMBOL(pci_generic_resume_compare);
+
/**
* pci_enable_device - Initialize device before it's used by a driver.
* @dev: PCI device to be initialized
diff -urN Linux/include/linux/pci.h linux/include/linux/pci.h
--- Linux/include/linux/pci.h Thu Apr 11 11:14:40 2002
+++ linux/include/linux/pci.h Thu Apr 11 11:15:28 2002
@@ -378,6 +378,7 @@
char name[80]; /* device name */
char slot_name[8]; /* slot name */
+ u32 saved_state[16]; /* for saving the config space before suspend */
int active; /* ISAPnP: device is active */
int ro; /* ISAPnP: read only */
unsigned short regs; /* ISAPnP: supported registers */
@@ -570,6 +571,8 @@
int pci_restore_state(struct pci_dev *dev, u32 *buffer);
int pci_set_power_state(struct pci_dev *dev, int state);
int pci_enable_wake(struct pci_dev *dev, u32 state, int enable);
+int pci_generic_suspend_save(struct pci_dev *pdev, u32 state);
+int pci_generic_resume_restore(struct pci_dev *pdev);
/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
-
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