Merge branch 'linux-2.6' into for-2.6.22

7 files changed, 55 insertions, 161 deletions

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 01869b1782e4..435c1958a7b7 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -94,12 +94,14 @@ static void msi_set_mask_bit(unsigned int irq, int flag)
 		int offset = entry->msi_attrib.entry_nr * PCI_MSIX_ENTRY_SIZE +
 			PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET;
 		writel(flag, entry->mask_base + offset);
+		readl(entry->mask_base + offset);
 		break;
 	}
 	default:
 		BUG();
 		break;
 	}
+	entry->msi_attrib.masked = !!flag;
 }
 
 void read_msi_msg(unsigned int irq, struct msi_msg *msg)
@@ -179,6 +181,7 @@ void write_msi_msg(unsigned int irq, struct msi_msg *msg)
 	default:
 		BUG();
 	}
+	entry->msg = *msg;
 }
 
 void mask_msi_irq(unsigned int irq)
@@ -225,164 +228,60 @@ static struct msi_desc* alloc_msi_entry(void)
 }
 
 #ifdef CONFIG_PM
-static int __pci_save_msi_state(struct pci_dev *dev)
-{
-	int pos, i = 0;
-	u16 control;
-	struct pci_cap_saved_state *save_state;
-	u32 *cap;
-
-	if (!dev->msi_enabled)
-		return 0;
-
-	pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-	if (pos <= 0)
-		return 0;
-
-	save_state = kzalloc(sizeof(struct pci_cap_saved_state) + sizeof(u32) * 5,
-		GFP_KERNEL);
-	if (!save_state) {
-		printk(KERN_ERR "Out of memory in pci_save_msi_state\n");
-		return -ENOMEM;
-	}
-	cap = &save_state->data[0];
-
-	pci_read_config_dword(dev, pos, &cap[i++]);
-	control = cap[0] >> 16;
-	pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_LO, &cap[i++]);
-	if (control & PCI_MSI_FLAGS_64BIT) {
-		pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_HI, &cap[i++]);
-		pci_read_config_dword(dev, pos + PCI_MSI_DATA_64, &cap[i++]);
-	} else
-		pci_read_config_dword(dev, pos + PCI_MSI_DATA_32, &cap[i++]);
-	if (control & PCI_MSI_FLAGS_MASKBIT)
-		pci_read_config_dword(dev, pos + PCI_MSI_MASK_BIT, &cap[i++]);
-	save_state->cap_nr = PCI_CAP_ID_MSI;
-	pci_add_saved_cap(dev, save_state);
-	return 0;
-}
-
 static void __pci_restore_msi_state(struct pci_dev *dev)
 {
-	int i = 0, pos;
+	int pos;
 	u16 control;
-	struct pci_cap_saved_state *save_state;
-	u32 *cap;
+	struct msi_desc *entry;
 
 	if (!dev->msi_enabled)
 		return;
 
-	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_MSI);
-	pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-	if (!save_state || pos <= 0)
-		return;
-	cap = &save_state->data[0];
+	entry = get_irq_msi(dev->irq);
+	pos = entry->msi_attrib.pos;
 
 	pci_intx(dev, 0);		/* disable intx */
-	control = cap[i++] >> 16;
 	msi_set_enable(dev, 0);
-	pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_LO, cap[i++]);
-	if (control & PCI_MSI_FLAGS_64BIT) {
-		pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_HI, cap[i++]);
-		pci_write_config_dword(dev, pos + PCI_MSI_DATA_64, cap[i++]);
-	} else
-		pci_write_config_dword(dev, pos + PCI_MSI_DATA_32, cap[i++]);
-	if (control & PCI_MSI_FLAGS_MASKBIT)
-		pci_write_config_dword(dev, pos + PCI_MSI_MASK_BIT, cap[i++]);
+	write_msi_msg(dev->irq, &entry->msg);
+	if (entry->msi_attrib.maskbit)
+		msi_set_mask_bit(dev->irq, entry->msi_attrib.masked);
+
+	pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control);
+	control &= ~(PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE);
+	if (entry->msi_attrib.maskbit || !entry->msi_attrib.masked)
+		control |= PCI_MSI_FLAGS_ENABLE;
 	pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control);
-	pci_remove_saved_cap(save_state);
-	kfree(save_state);
-}
-
-static int __pci_save_msix_state(struct pci_dev *dev)
-{
-	int pos;
-	int irq, head, tail = 0;
-	u16 control;
-	struct pci_cap_saved_state *save_state;
-
-	if (!dev->msix_enabled)
-		return 0;
-
-	pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-	if (pos <= 0)
-		return 0;
-
-	/* save the capability */
-	pci_read_config_word(dev, msi_control_reg(pos), &control);
-	save_state = kzalloc(sizeof(struct pci_cap_saved_state) + sizeof(u16),
-		GFP_KERNEL);
-	if (!save_state) {
-		printk(KERN_ERR "Out of memory in pci_save_msix_state\n");
-		return -ENOMEM;
-	}
-	*((u16 *)&save_state->data[0]) = control;
-
-	/* save the table */
-	irq = head = dev->first_msi_irq;
-	while (head != tail) {
-		struct msi_desc *entry;
-
-		entry = get_irq_msi(irq);
-		read_msi_msg(irq, &entry->msg_save);
-
-		tail = entry->link.tail;
-		irq = tail;
-	}
-
-	save_state->cap_nr = PCI_CAP_ID_MSIX;
-	pci_add_saved_cap(dev, save_state);
-	return 0;
-}
-
-int pci_save_msi_state(struct pci_dev *dev)
-{
-	int rc;
-
-	rc = __pci_save_msi_state(dev);
-	if (rc)
-		return rc;
-
-	rc = __pci_save_msix_state(dev);
-
-	return rc;
 }
 
 static void __pci_restore_msix_state(struct pci_dev *dev)
 {
-	u16 save;
 	int pos;
 	int irq, head, tail = 0;
 	struct msi_desc *entry;
-	struct pci_cap_saved_state *save_state;
+	u16 control;
 
 	if (!dev->msix_enabled)
 		return;
 
-	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_MSIX);
-	if (!save_state)
-		return;
-	save = *((u16 *)&save_state->data[0]);
-	pci_remove_saved_cap(save_state);
-	kfree(save_state);
-
-	pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-	if (pos <= 0)
-		return;
-
 	/* route the table */
 	pci_intx(dev, 0);		/* disable intx */
 	msix_set_enable(dev, 0);
 	irq = head = dev->first_msi_irq;
+	entry = get_irq_msi(irq);
+	pos = entry->msi_attrib.pos;
 	while (head != tail) {
 		entry = get_irq_msi(irq);
-		write_msi_msg(irq, &entry->msg_save);
+		write_msi_msg(irq, &entry->msg);
+		msi_set_mask_bit(irq, entry->msi_attrib.masked);
 
 		tail = entry->link.tail;
 		irq = tail;
 	}
 
-	pci_write_config_word(dev, msi_control_reg(pos), save);
+	pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
+	control &= ~PCI_MSIX_FLAGS_MASKALL;
+	control |= PCI_MSIX_FLAGS_ENABLE;
+	pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
 }
 
 void pci_restore_msi_state(struct pci_dev *dev)
@@ -420,6 +319,7 @@ static int msi_capability_init(struct pci_dev *dev)
 	entry->msi_attrib.is_64 = is_64bit_address(control);
 	entry->msi_attrib.entry_nr = 0;
 	entry->msi_attrib.maskbit = is_mask_bit_support(control);
+	entry->msi_attrib.masked = 1;
 	entry->msi_attrib.default_irq = dev->irq;	/* Save IOAPIC IRQ */
 	entry->msi_attrib.pos = pos;
 	if (is_mask_bit_support(control)) {
@@ -507,6 +407,7 @@ static int msix_capability_init(struct pci_dev *dev,
 		entry->msi_attrib.is_64 = 1;
 		entry->msi_attrib.entry_nr = j;
 		entry->msi_attrib.maskbit = 1;
+		entry->msi_attrib.masked = 1;
 		entry->msi_attrib.default_irq = dev->irq;
 		entry->msi_attrib.pos = pos;
 		entry->dev = dev;
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index df495300ce3d..d3eab057b2d3 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -551,7 +551,9 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	if (pos <= 0)
 		return 0;
 
-	save_state = kzalloc(sizeof(*save_state) + sizeof(u16) * 4, GFP_KERNEL);
+	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
+	if (!save_state)
+		save_state = kzalloc(sizeof(*save_state) + sizeof(u16) * 4, GFP_KERNEL);
 	if (!save_state) {
 		dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
 		return -ENOMEM;
@@ -582,8 +584,6 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
 	pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]);
 	pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]);
 	pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]);
-	pci_remove_saved_cap(save_state);
-	kfree(save_state);
 }
 
 
@@ -597,7 +597,9 @@ static int pci_save_pcix_state(struct pci_dev *dev)
 	if (pos <= 0)
 		return 0;
 
-	save_state = kzalloc(sizeof(*save_state) + sizeof(u16), GFP_KERNEL);
+	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
+	if (!save_state)
+		save_state = kzalloc(sizeof(*save_state) + sizeof(u16), GFP_KERNEL);
 	if (!save_state) {
 		dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
 		return -ENOMEM;
@@ -622,8 +624,6 @@ static void pci_restore_pcix_state(struct pci_dev *dev)
 	cap = (u16 *)&save_state->data[0];
 
 	pci_write_config_word(dev, pos + PCI_X_CMD, cap[i++]);
-	pci_remove_saved_cap(save_state);
-	kfree(save_state);
 }
 
 
@@ -638,8 +638,6 @@ pci_save_state(struct pci_dev *dev)
 	/* XXX: 100% dword access ok here? */
 	for (i = 0; i < 16; i++)
 		pci_read_config_dword(dev, i * 4,&dev->saved_config_space[i]);
-	if ((i = pci_save_msi_state(dev)) != 0)
-		return i;
 	if ((i = pci_save_pcie_state(dev)) != 0)
 		return i;
 	if ((i = pci_save_pcix_state(dev)) != 0)
@@ -757,7 +755,8 @@ int pci_enable_device(struct pci_dev *dev)
  * when a device is enabled using managed PCI device enable interface.
  */
 struct pci_devres {
-	unsigned int disable:1;
+	unsigned int enabled:1;
+	unsigned int pinned:1;
 	unsigned int orig_intx:1;
 	unsigned int restore_intx:1;
 	u32 region_mask;
@@ -781,7 +780,7 @@ static void pcim_release(struct device *gendev, void *res)
 	if (this->restore_intx)
 		pci_intx(dev, this->orig_intx);
 
-	if (this->disable)
+	if (this->enabled && !this->pinned)
 		pci_disable_device(dev);
 }
 
@@ -820,12 +819,12 @@ int pcim_enable_device(struct pci_dev *pdev)
 	dr = get_pci_dr(pdev);
 	if (unlikely(!dr))
 		return -ENOMEM;
-	WARN_ON(!!dr->disable);
+	WARN_ON(!!dr->enabled);
 
 	rc = pci_enable_device(pdev);
 	if (!rc) {
 		pdev->is_managed = 1;
-		dr->disable = 1;
+		dr->enabled = 1;
 	}
 	return rc;
 }
@@ -843,9 +842,9 @@ void pcim_pin_device(struct pci_dev *pdev)
 	struct pci_devres *dr;
 
 	dr = find_pci_dr(pdev);
-	WARN_ON(!dr || !dr->disable);
+	WARN_ON(!dr || !dr->enabled);
 	if (dr)
-		dr->disable = 0;
+		dr->pinned = 1;
 }
 
 /**
@@ -876,7 +875,7 @@ pci_disable_device(struct pci_dev *dev)
 
 	dr = find_pci_dr(dev);
 	if (dr)
-		dr->disable = 0;
+		dr->enabled = 0;
 
 	if (atomic_sub_return(1, &dev->enable_cnt) != 0)
 		return;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index ae7a975995a5..62ea04c8af64 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -52,10 +52,8 @@ static inline void pci_no_msi(void) { }
 #endif
 
 #if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
-int pci_save_msi_state(struct pci_dev *dev);
 void pci_restore_msi_state(struct pci_dev *dev);
 #else
-static inline int pci_save_msi_state(struct pci_dev *dev) { return 0; }
 static inline void pci_restore_msi_state(struct pci_dev *dev) {}
 #endif
 
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index b164de050d4f..db6ad8e763ac 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -66,7 +66,7 @@ static struct pci_error_handlers aer_error_handlers = {
 	.resume = aer_error_resume,
 };
 
-static struct pcie_port_service_driver aerdrv = {
+static struct pcie_port_service_driver aerdriver = {
 	.name		= "aer",
 	.id_table	= &aer_id[0],
 
@@ -328,7 +328,7 @@ static void aer_error_resume(struct pci_dev *dev)
  **/
 static int __init aer_service_init(void)
 {
-	return pcie_port_service_register(&aerdrv);
+	return pcie_port_service_register(&aerdriver);
 }
 
 /**
@@ -338,7 +338,7 @@ static int __init aer_service_init(void)
  **/
 static void __exit aer_service_exit(void)
 {
-	pcie_port_service_unregister(&aerdrv);
+	pcie_port_service_unregister(&aerdriver);
 }
 
 module_init(aer_service_init);
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index f17e7ed2b2a5..df383645e366 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -93,7 +93,7 @@ static int __devinit pcie_portdrv_probe (struct pci_dev *dev,
         if (!dev->irq && dev->pin) {
 		printk(KERN_WARNING 
 		"%s->Dev[%04x:%04x] has invalid IRQ. Check vendor BIOS\n", 
-		__FUNCTION__, dev->device, dev->vendor);
+		__FUNCTION__, dev->vendor, dev->device);
 	}
 	if (pcie_port_device_register(dev)) {
 		pci_disable_device(dev);
@@ -276,7 +276,7 @@ static struct pci_error_handlers pcie_portdrv_err_handler = {
 		.resume = pcie_portdrv_err_resume,
 };
 
-static struct pci_driver pcie_portdrv = {
+static struct pci_driver pcie_portdriver = {
 	.name		= (char *)device_name,
 	.id_table	= &port_pci_ids[0],
 
@@ -298,7 +298,7 @@ static int __init pcie_portdrv_init(void)
 		printk(KERN_WARNING "PCIE: bus_register error: %d\n", retval);
 		goto out;
 	}
-	retval = pci_register_driver(&pcie_portdrv);
+	retval = pci_register_driver(&pcie_portdriver);
 	if (retval)
 		pcie_port_bus_unregister();
  out:
@@ -307,7 +307,7 @@ static int __init pcie_portdrv_init(void)
 
 static void __exit pcie_portdrv_exit(void) 
 {
-	pci_unregister_driver(&pcie_portdrv);
+	pci_unregister_driver(&pcie_portdriver);
 	pcie_port_bus_unregister();
 }
 
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 7f94fc098cd3..65d6f23ead41 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -963,6 +963,13 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_ho
  * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it 
  * becomes necessary to do this tweak in two steps -- I've chosen the Host
  * bridge as trigger.
+ *
+ * Note that we used to unhide the SMBus that way on Toshiba laptops
+ * (Satellite A40 and Tecra M2) but then found that the thermal management
+ * was done by SMM code, which could cause unsynchronized concurrent
+ * accesses to the SMBus registers, with potentially bad effects. Thus you
+ * should be very careful when adding new entries: if SMM is accessing the
+ * Intel SMBus, this is a very good reason to leave it hidden.
  */
 static int asus_hides_smbus;
 
@@ -1040,17 +1047,6 @@ static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
 			case 0x099c: /* HP Compaq nx6110 */
 				asus_hides_smbus = 1;
 			}
-	} else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_TOSHIBA)) {
-		if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
-			switch(dev->subsystem_device) {
-			case 0x0001: /* Toshiba Satellite A40 */
-				asus_hides_smbus = 1;
-			}
-		else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
-			switch(dev->subsystem_device) {
-			case 0x0001: /* Toshiba Tecra M2 */
-				asus_hides_smbus = 1;
-			}
        } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
                if (dev->device ==  PCI_DEVICE_ID_INTEL_82855PM_HB)
                        switch(dev->subsystem_device) {
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index ff98eaddaa73..2dd8681d6b31 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -15,7 +15,7 @@
 
 DECLARE_RWSEM(pci_bus_sem);
 
-static struct pci_bus * __devinit
+static struct pci_bus *
 pci_do_find_bus(struct pci_bus* bus, unsigned char busnr)
 {
 	struct pci_bus* child;