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-rw-r--r--drivers/pci/Kconfig4
-rw-r--r--drivers/pci/Makefile4
-rw-r--r--drivers/pci/dmar.c12
-rw-r--r--drivers/pci/hotplug/acpi_pcihp.c2
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c3
-rw-r--r--drivers/pci/hotplug/rpaphp_core.c2
-rw-r--r--drivers/pci/htirq.c16
-rw-r--r--drivers/pci/intel-iommu.c42
-rw-r--r--drivers/pci/intr_remapping.c4
-rw-r--r--drivers/pci/iova.c2
-rw-r--r--drivers/pci/msi.c10
-rw-r--r--drivers/pci/pci-acpi.c16
-rw-r--r--drivers/pci/pci-driver.c10
-rw-r--r--drivers/pci/pci-label.c252
-rw-r--r--drivers/pci/pci-sysfs.c7
-rw-r--r--drivers/pci/pci.c6
-rw-r--r--drivers/pci/pci.h2
-rw-r--r--drivers/pci/pcie/Kconfig2
-rw-r--r--drivers/pci/pcie/aer/aer_inject.c31
-rw-r--r--drivers/pci/pcie/aer/aerdrv.h9
-rw-r--r--drivers/pci/pcie/aer/aerdrv_errprint.c182
-rw-r--r--drivers/pci/pcie/aspm.c33
-rw-r--r--drivers/pci/pcie/portdrv_core.c5
-rw-r--r--drivers/pci/probe.c4
-rw-r--r--drivers/pci/quirks.c117
-rw-r--r--drivers/pci/setup-bus.c321
-rw-r--r--drivers/pci/xen-pcifront.c31
27 files changed, 799 insertions, 330 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index a9523fd..0fa466a 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -87,3 +87,7 @@ config PCI_IOAPIC
depends on ACPI
depends on HOTPLUG
default y
+
+config PCI_LABEL
+ def_bool y if (DMI || ACPI)
+ select NLS
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 98e6fdf..c85f744 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
obj-$(CONFIG_X86) += setup-bus.o
obj-$(CONFIG_ALPHA) += setup-bus.o setup-irq.o
obj-$(CONFIG_ARM) += setup-bus.o setup-irq.o
+obj-$(CONFIG_UNICORE32) += setup-bus.o setup-irq.o
obj-$(CONFIG_PARISC) += setup-bus.o
obj-$(CONFIG_SUPERH) += setup-bus.o setup-irq.o
obj-$(CONFIG_PPC) += setup-bus.o
@@ -53,11 +54,12 @@ obj-$(CONFIG_TILE) += setup-bus.o setup-irq.o
#
# ACPI Related PCI FW Functions
+# ACPI _DSM provided firmware instance and string name
#
obj-$(CONFIG_ACPI) += pci-acpi.o
# SMBIOS provided firmware instance and labels
-obj-$(CONFIG_DMI) += pci-label.o
+obj-$(CONFIG_PCI_LABEL) += pci-label.o
# Cardbus & CompactPCI use setup-bus
obj-$(CONFIG_HOTPLUG) += setup-bus.o
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 09933eb..12e02bf 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -1226,7 +1226,7 @@ const char *dmar_get_fault_reason(u8 fault_reason, int *fault_type)
void dmar_msi_unmask(struct irq_data *data)
{
- struct intel_iommu *iommu = irq_data_get_irq_data(data);
+ struct intel_iommu *iommu = irq_data_get_irq_handler_data(data);
unsigned long flag;
/* unmask it */
@@ -1240,7 +1240,7 @@ void dmar_msi_unmask(struct irq_data *data)
void dmar_msi_mask(struct irq_data *data)
{
unsigned long flag;
- struct intel_iommu *iommu = irq_data_get_irq_data(data);
+ struct intel_iommu *iommu = irq_data_get_irq_handler_data(data);
/* mask it */
spin_lock_irqsave(&iommu->register_lock, flag);
@@ -1252,7 +1252,7 @@ void dmar_msi_mask(struct irq_data *data)
void dmar_msi_write(int irq, struct msi_msg *msg)
{
- struct intel_iommu *iommu = get_irq_data(irq);
+ struct intel_iommu *iommu = irq_get_handler_data(irq);
unsigned long flag;
spin_lock_irqsave(&iommu->register_lock, flag);
@@ -1264,7 +1264,7 @@ void dmar_msi_write(int irq, struct msi_msg *msg)
void dmar_msi_read(int irq, struct msi_msg *msg)
{
- struct intel_iommu *iommu = get_irq_data(irq);
+ struct intel_iommu *iommu = irq_get_handler_data(irq);
unsigned long flag;
spin_lock_irqsave(&iommu->register_lock, flag);
@@ -1382,12 +1382,12 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
return -EINVAL;
}
- set_irq_data(irq, iommu);
+ irq_set_handler_data(irq, iommu);
iommu->irq = irq;
ret = arch_setup_dmar_msi(irq);
if (ret) {
- set_irq_data(irq, NULL);
+ irq_set_handler_data(irq, NULL);
iommu->irq = 0;
destroy_irq(irq);
return ret;
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index 3bc72d1..8f3faf3 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -351,7 +351,7 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev, u32 flags)
* To handle different BIOS behavior, we look for _OSC on a root
* bridge preferentially (according to PCI fw spec). Later for
* OSHP within the scope of the hotplug controller and its parents,
- * upto the host bridge under which this controller exists.
+ * up to the host bridge under which this controller exists.
*/
handle = acpi_find_root_bridge_handle(pdev);
if (handle) {
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index cb23aa2..2f67e9b 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -212,6 +212,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
pdev = pci_get_slot(pbus, PCI_DEVFN(device, function));
if (pdev) {
+ pdev->current_state = PCI_D0;
slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
pci_dev_put(pdev);
}
@@ -584,7 +585,7 @@ static void remove_bridge(acpi_handle handle)
/*
* On root bridges with hotplug slots directly underneath (ie,
- * no p2p bridge inbetween), we call cleanup_bridge().
+ * no p2p bridge between), we call cleanup_bridge().
*
* The else clause cleans up root bridges that either had no
* hotplug slots at all, or had a p2p bridge underneath.
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index ef7411c..758adb5 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -290,7 +290,7 @@ static int is_php_dn(struct device_node *dn, const int **indexes,
* @dn: device node of slot
*
* This subroutine will register a hotplugable slot with the
- * PCI hotplug infrastructure. This routine is typicaly called
+ * PCI hotplug infrastructure. This routine is typically called
* during boot time, if the hotplug slots are present at boot time,
* or is called later, by the dlpar add code, if the slot is
* being dynamically added during runtime.
diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
index 834842a..db057b6 100644
--- a/drivers/pci/htirq.c
+++ b/drivers/pci/htirq.c
@@ -34,7 +34,7 @@ struct ht_irq_cfg {
void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg)
{
- struct ht_irq_cfg *cfg = get_irq_data(irq);
+ struct ht_irq_cfg *cfg = irq_get_handler_data(irq);
unsigned long flags;
spin_lock_irqsave(&ht_irq_lock, flags);
if (cfg->msg.address_lo != msg->address_lo) {
@@ -53,13 +53,13 @@ void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg)
void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg)
{
- struct ht_irq_cfg *cfg = get_irq_data(irq);
+ struct ht_irq_cfg *cfg = irq_get_handler_data(irq);
*msg = cfg->msg;
}
void mask_ht_irq(struct irq_data *data)
{
- struct ht_irq_cfg *cfg = irq_data_get_irq_data(data);
+ struct ht_irq_cfg *cfg = irq_data_get_irq_handler_data(data);
struct ht_irq_msg msg = cfg->msg;
msg.address_lo |= 1;
@@ -68,7 +68,7 @@ void mask_ht_irq(struct irq_data *data)
void unmask_ht_irq(struct irq_data *data)
{
- struct ht_irq_cfg *cfg = irq_data_get_irq_data(data);
+ struct ht_irq_cfg *cfg = irq_data_get_irq_handler_data(data);
struct ht_irq_msg msg = cfg->msg;
msg.address_lo &= ~1;
@@ -126,7 +126,7 @@ int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update)
kfree(cfg);
return -EBUSY;
}
- set_irq_data(irq, cfg);
+ irq_set_handler_data(irq, cfg);
if (arch_setup_ht_irq(irq, dev) < 0) {
ht_destroy_irq(irq);
@@ -162,9 +162,9 @@ void ht_destroy_irq(unsigned int irq)
{
struct ht_irq_cfg *cfg;
- cfg = get_irq_data(irq);
- set_irq_chip(irq, NULL);
- set_irq_data(irq, NULL);
+ cfg = irq_get_handler_data(irq);
+ irq_set_chip(irq, NULL);
+ irq_set_handler_data(irq, NULL);
destroy_irq(irq);
kfree(cfg);
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index cdded1e..d552d2c 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -36,7 +36,7 @@
#include <linux/iova.h>
#include <linux/iommu.h>
#include <linux/intel-iommu.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
#include <linux/tboot.h>
#include <linux/dmi.h>
#include <asm/cacheflush.h>
@@ -1206,7 +1206,7 @@ void free_dmar_iommu(struct intel_iommu *iommu)
iommu_disable_translation(iommu);
if (iommu->irq) {
- set_irq_data(iommu->irq, NULL);
+ irq_set_handler_data(iommu->irq, NULL);
/* This will mask the irq */
free_irq(iommu->irq, iommu);
destroy_irq(iommu->irq);
@@ -2269,7 +2269,7 @@ static int __init init_dmars(int force_on)
/*
* TBD:
* we could share the same root & context tables
- * amoung all IOMMU's. Need to Split it later.
+ * among all IOMMU's. Need to Split it later.
*/
ret = iommu_alloc_root_entry(iommu);
if (ret) {
@@ -3146,7 +3146,7 @@ static void iommu_flush_all(void)
}
}
-static int iommu_suspend(struct sys_device *dev, pm_message_t state)
+static int iommu_suspend(void)
{
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu = NULL;
@@ -3186,7 +3186,7 @@ nomem:
return -ENOMEM;
}
-static int iommu_resume(struct sys_device *dev)
+static void iommu_resume(void)
{
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu = NULL;
@@ -3194,7 +3194,7 @@ static int iommu_resume(struct sys_device *dev)
if (init_iommu_hw()) {
WARN(1, "IOMMU setup failed, DMAR can not resume!\n");
- return -EIO;
+ return;
}
for_each_active_iommu(iommu, drhd) {
@@ -3215,40 +3215,20 @@ static int iommu_resume(struct sys_device *dev)
for_each_active_iommu(iommu, drhd)
kfree(iommu->iommu_state);
-
- return 0;
}
-static struct sysdev_class iommu_sysclass = {
- .name = "iommu",
+static struct syscore_ops iommu_syscore_ops = {
.resume = iommu_resume,
.suspend = iommu_suspend,
};
-static struct sys_device device_iommu = {
- .cls = &iommu_sysclass,
-};
-
-static int __init init_iommu_sysfs(void)
+static void __init init_iommu_pm_ops(void)
{
- int error;
-
- error = sysdev_class_register(&iommu_sysclass);
- if (error)
- return error;
-
- error = sysdev_register(&device_iommu);
- if (error)
- sysdev_class_unregister(&iommu_sysclass);
-
- return error;
+ register_syscore_ops(&iommu_syscore_ops);
}
#else
-static int __init init_iommu_sysfs(void)
-{
- return 0;
-}
+static inline int init_iommu_pm_ops(void) { }
#endif /* CONFIG_PM */
/*
@@ -3346,7 +3326,7 @@ int __init intel_iommu_init(void)
#endif
dma_ops = &intel_dma_ops;
- init_iommu_sysfs();
+ init_iommu_pm_ops();
register_iommu(&intel_iommu_ops);
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index ec87cd6..3607faf 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -50,7 +50,7 @@ static DEFINE_SPINLOCK(irq_2_ir_lock);
static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
{
- struct irq_cfg *cfg = get_irq_chip_data(irq);
+ struct irq_cfg *cfg = irq_get_chip_data(irq);
return cfg ? &cfg->irq_2_iommu : NULL;
}
@@ -289,7 +289,7 @@ int free_irte(int irq)
* source validation type
*/
#define SVT_NO_VERIFY 0x0 /* no verification is required */
-#define SVT_VERIFY_SID_SQ 0x1 /* verify using SID and SQ fiels */
+#define SVT_VERIFY_SID_SQ 0x1 /* verify using SID and SQ fields */
#define SVT_VERIFY_BUS 0x2 /* verify bus of request-id */
/*
diff --git a/drivers/pci/iova.c b/drivers/pci/iova.c
index 7914951..9606e59 100644
--- a/drivers/pci/iova.c
+++ b/drivers/pci/iova.c
@@ -391,7 +391,7 @@ reserve_iova(struct iova_domain *iovad,
break;
}
- /* We are here either becasue this is the first reserver node
+ /* We are here either because this is the first reserver node
* or need to insert remaining non overlap addr range
*/
iova = __insert_new_range(iovad, pfn_lo, pfn_hi);
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 44b0aee..2f10328 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -236,7 +236,7 @@ void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
void read_msi_msg(unsigned int irq, struct msi_msg *msg)
{
- struct msi_desc *entry = get_irq_msi(irq);
+ struct msi_desc *entry = irq_get_msi_desc(irq);
__read_msi_msg(entry, msg);
}
@@ -253,7 +253,7 @@ void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg)
{
- struct msi_desc *entry = get_irq_msi(irq);
+ struct msi_desc *entry = irq_get_msi_desc(irq);
__get_cached_msi_msg(entry, msg);
}
@@ -297,7 +297,7 @@ void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
void write_msi_msg(unsigned int irq, struct msi_msg *msg)
{
- struct msi_desc *entry = get_irq_msi(irq);
+ struct msi_desc *entry = irq_get_msi_desc(irq);
__write_msi_msg(entry, msg);
}
@@ -354,7 +354,7 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
if (!dev->msi_enabled)
return;
- entry = get_irq_msi(dev->irq);
+ entry = irq_get_msi_desc(dev->irq);
pos = entry->msi_attrib.pos;
pci_intx_for_msi(dev, 0);
@@ -519,7 +519,7 @@ static void msix_program_entries(struct pci_dev *dev,
PCI_MSIX_ENTRY_VECTOR_CTRL;
entries[i].vector = entry->irq;
- set_irq_msi(entry->irq, entry);
+ irq_set_msi_desc(entry->irq, entry);
entry->masked = readl(entry->mask_base + offset);
msix_mask_irq(entry, 1);
i++;
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 6fe0772..7c3b18e 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -293,19 +293,11 @@ static int acpi_dev_run_wake(struct device *phys_dev, bool enable)
}
if (enable) {
- if (!dev->wakeup.run_wake_count++) {
- acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
- acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number);
- }
- } else if (dev->wakeup.run_wake_count > 0) {
- if (!--dev->wakeup.run_wake_count) {
- acpi_disable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number);
- acpi_disable_wakeup_device_power(dev);
- }
+ acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
+ acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
} else {
- error = -EALREADY;
+ acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
+ acpi_disable_wakeup_device_power(dev);
}
return error;
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 88246dd..135df16 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -431,7 +431,7 @@ static void pci_device_shutdown(struct device *dev)
pci_msix_shutdown(pci_dev);
}
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
/* Auxiliary functions used for system resume and run-time resume. */
@@ -781,7 +781,7 @@ static int pci_pm_resume(struct device *dev)
#endif /* !CONFIG_SUSPEND */
-#ifdef CONFIG_HIBERNATION
+#ifdef CONFIG_HIBERNATE_CALLBACKS
static int pci_pm_freeze(struct device *dev)
{
@@ -970,7 +970,7 @@ static int pci_pm_restore(struct device *dev)
return error;
}
-#else /* !CONFIG_HIBERNATION */
+#else /* !CONFIG_HIBERNATE_CALLBACKS */
#define pci_pm_freeze NULL
#define pci_pm_freeze_noirq NULL
@@ -981,7 +981,7 @@ static int pci_pm_restore(struct device *dev)
#define pci_pm_restore NULL
#define pci_pm_restore_noirq NULL
-#endif /* !CONFIG_HIBERNATION */
+#endif /* !CONFIG_HIBERNATE_CALLBACKS */
#ifdef CONFIG_PM_RUNTIME
@@ -1059,7 +1059,7 @@ static int pci_pm_runtime_idle(struct device *dev)
#endif /* !CONFIG_PM_RUNTIME */
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
const struct dev_pm_ops pci_dev_pm_ops = {
.prepare = pci_pm_prepare,
diff --git a/drivers/pci/pci-label.c b/drivers/pci/pci-label.c
index 90c0a72..77cb2a1 100644
--- a/drivers/pci/pci-label.c
+++ b/drivers/pci/pci-label.c
@@ -5,6 +5,13 @@
* by Narendra K <Narendra_K@dell.com>,
* Jordan Hargrave <Jordan_Hargrave@dell.com>
*
+ * PCI Firmware Specification Revision 3.1 section 4.6.7 (DSM for Naming a
+ * PCI or PCI Express Device Under Operating Systems) defines an instance
+ * number and string name. This code retrieves them and exports them to sysfs.
+ * If the system firmware does not provide the ACPI _DSM (Device Specific
+ * Method), then the SMBIOS type 41 instance number and string is exported to
+ * sysfs.
+ *
* SMBIOS defines type 41 for onboard pci devices. This code retrieves
* the instance number and string from the type 41 record and exports
* it to sysfs.
@@ -19,8 +26,29 @@
#include <linux/pci_ids.h>
#include <linux/module.h>
#include <linux/device.h>
+#include <linux/nls.h>
+#include <linux/acpi.h>
+#include <linux/pci-acpi.h>
+#include <acpi/acpi_bus.h>
#include "pci.h"
+#define DEVICE_LABEL_DSM 0x07
+
+#ifndef CONFIG_DMI
+
+static inline int
+pci_create_smbiosname_file(struct pci_dev *pdev)
+{
+ return -1;
+}
+
+static inline void
+pci_remove_smbiosname_file(struct pci_dev *pdev)
+{
+}
+
+#else
+
enum smbios_attr_enum {
SMBIOS_ATTR_NONE = 0,
SMBIOS_ATTR_LABEL_SHOW,
@@ -120,9 +148,7 @@ static struct attribute_group smbios_attr_group = {
static int
pci_create_smbiosname_file(struct pci_dev *pdev)
{
- if (!sysfs_create_group(&pdev->dev.kobj, &smbios_attr_group))
- return 0;
- return -ENODEV;
+ return sysfs_create_group(&pdev->dev.kobj, &smbios_attr_group);
}
static void
@@ -131,13 +157,227 @@ pci_remove_smbiosname_file(struct pci_dev *pdev)
sysfs_remove_group(&pdev->dev.kobj, &smbios_attr_group);
}
+#endif
+
+#ifndef CONFIG_ACPI
+
+static inline int
+pci_create_acpi_index_label_files(struct pci_dev *pdev)
+{
+ return -1;
+}
+
+static inline int
+pci_remove_acpi_index_label_files(struct pci_dev *pdev)
+{
+ return -1;
+}
+
+static inline bool
+device_has_dsm(struct device *dev)
+{
+ return false;
+}
+
+#else
+
+static const char device_label_dsm_uuid[] = {
+ 0xD0, 0x37, 0xC9, 0xE5, 0x53, 0x35, 0x7A, 0x4D,
+ 0x91, 0x17, 0xEA, 0x4D, 0x19, 0xC3, 0x43, 0x4D
+};
+
+enum acpi_attr_enum {
+ ACPI_ATTR_NONE = 0,
+ ACPI_ATTR_LABEL_SHOW,
+ ACPI_ATTR_INDEX_SHOW,
+};
+
+static void dsm_label_utf16s_to_utf8s(union acpi_object *obj, char *buf)
+{
+ int len;
+ len = utf16s_to_utf8s((const wchar_t *)obj->
+ package.elements[1].string.pointer,
+ obj->package.elements[1].string.length,
+ UTF16_LITTLE_ENDIAN,
+ buf, PAGE_SIZE);
+ buf[len] = '\n';
+}
+
+static int
+dsm_get_label(acpi_handle handle, int func,
+ struct acpi_buffer *output,
+ char *buf, enum acpi_attr_enum attribute)
+{
+ struct acpi_object_list input;
+ union acpi_object params[4];
+ union acpi_object *obj;
+ int len = 0;
+
+ int err;
+
+ input.count = 4;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_BUFFER;
+ params[0].buffer.length = sizeof(device_label_dsm_uuid);
+ params[0].buffer.pointer = (char *)device_label_dsm_uuid;
+ params[1].type = ACPI_TYPE_INTEGER;
+ params[1].integer.value = 0x02;
+ params[2].type = ACPI_TYPE_INTEGER;
+ params[2].integer.value = func;
+ params[3].type = ACPI_TYPE_PACKAGE;
+ params[3].package.count = 0;
+ params[3].package.elements = NULL;
+
+ err = acpi_evaluate_object(handle, "_DSM", &input, output);
+ if (err)
+ return -1;
+
+ obj = (union acpi_object *)output->pointer;
+
+ switch (obj->type) {
+ case ACPI_TYPE_PACKAGE:
+ if (obj->package.count != 2)
+ break;
+ len = obj->package.elements[0].integer.value;
+ if (buf) {
+ if (attribute == ACPI_ATTR_INDEX_SHOW)
+ scnprintf(buf, PAGE_SIZE, "%llu\n",
+ obj->package.elements[0].integer.value);
+ else if (attribute == ACPI_ATTR_LABEL_SHOW)
+ dsm_label_utf16s_to_utf8s(obj, buf);
+ kfree(output->pointer);
+ return strlen(buf);
+ }
+ kfree(output->pointer);
+ return len;
+ break;
+ default:
+ kfree(output->pointer);
+ }
+ return -1;
+}
+
+static bool
+device_has_dsm(struct device *dev)
+{
+ acpi_handle handle;
+ struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
+
+ handle = DEVICE_ACPI_HANDLE(dev);
+
+ if (!handle)
+ return FALSE;
+
+ if (dsm_get_label(handle, DEVICE_LABEL_DSM, &output, NULL,
+ ACPI_ATTR_NONE) > 0)
+ return TRUE;
+
+ return FALSE;
+}
+
+static mode_t
+acpi_index_string_exist(struct kobject *kobj, struct attribute *attr, int n)
+{
+ struct device *dev;
+
+ dev = container_of(kobj, struct device, kobj);
+
+ if (device_has_dsm(dev))
+ return S_IRUGO;
+
+ return 0;
+}
+
+static ssize_t
+acpilabel_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
+ acpi_handle handle;
+ int length;
+
+ handle = DEVICE_ACPI_HANDLE(dev);
+
+ if (!handle)
+ return -1;
+
+ length = dsm_get_label(handle, DEVICE_LABEL_DSM,
+ &output, buf, ACPI_ATTR_LABEL_SHOW);
+
+ if (length < 1)
+ return -1;
+
+ return length;
+}
+
+static ssize_t
+acpiindex_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
+ acpi_handle handle;
+ int length;
+
+ handle = DEVICE_ACPI_HANDLE(dev);
+
+ if (!handle)
+ return -1;
+
+ length = dsm_get_label(handle, DEVICE_LABEL_DSM,
+ &output, buf, ACPI_ATTR_INDEX_SHOW);
+
+ if (length < 0)
+ return -1;
+
+ return length;
+
+}
+
+static struct device_attribute acpi_attr_label = {
+ .attr = {.name = "label", .mode = 0444},
+ .show = acpilabel_show,
+};
+
+static struct device_attribute acpi_attr_index = {
+ .attr = {.name = "acpi_index", .mode = 0444},
+ .show = acpiindex_show,
+};
+
+static struct attribute *acpi_attributes[] = {
+ &acpi_attr_label.attr,
+ &acpi_attr_index.attr,
+ NULL,
+};
+
+static struct attribute_group acpi_attr_group = {
+ .attrs = acpi_attributes,
+ .is_visible = acpi_index_string_exist,
+};
+
+static int
+pci_create_acpi_index_label_files(struct pci_dev *pdev)
+{
+ return sysfs_create_group(&pdev->dev.kobj, &acpi_attr_group);
+}
+
+static int
+pci_remove_acpi_index_label_files(struct pci_dev *pdev)
+{
+ sysfs_remove_group(&pdev->dev.kobj, &acpi_attr_group);
+ return 0;
+}
+#endif
+
void pci_create_firmware_label_files(struct pci_dev *pdev)
{
- if (!pci_create_smbiosname_file(pdev))
- ;
+ if (device_has_dsm(&pdev->dev))
+ pci_create_acpi_index_label_files(pdev);
+ else
+ pci_create_smbiosname_file(pdev);
}
void pci_remove_firmware_label_files(struct pci_dev *pdev)
{
- pci_remove_smbiosname_file(pdev);
+ if (device_has_dsm(&pdev->dev))
+ pci_remove_acpi_index_label_files(pdev);
+ else
+ pci_remove_smbiosname_file(pdev);
}
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 8ecaac9..f8deb3e 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -23,6 +23,7 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/capability.h>
+#include <linux/security.h>
#include <linux/pci-aspm.h>
#include <linux/slab.h>
#include "pci.h"
@@ -368,7 +369,7 @@ pci_read_config(struct file *filp, struct kobject *kobj,
u8 *data = (u8*) buf;
/* Several chips lock up trying to read undefined config space */
- if (cap_raised(filp->f_cred->cap_effective, CAP_SYS_ADMIN)) {
+ if (security_capable(&init_user_ns, filp->f_cred, CAP_SYS_ADMIN) == 0) {
size = dev->cfg_size;
} else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
size = 128;
@@ -644,7 +645,7 @@ pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type)
* a per-bus basis. This routine creates the files and ties them into
* their associated read, write and mmap files from pci-sysfs.c
*
- * On error unwind, but don't propogate the error to the caller
+ * On error unwind, but don't propagate the error to the caller
* as it is ok to set up the PCI bus without these files.
*/
void pci_create_legacy_files(struct pci_bus *b)
@@ -1087,7 +1088,7 @@ static int pci_create_capabilities_sysfs(struct pci_dev *dev)
attr->write = write_vpd_attr;
retval = sysfs_create_bin_file(&dev->dev.kobj, attr);
if (retval) {
- kfree(dev->vpd->attr);
+ kfree(attr);
return retval;
}
dev->vpd->attr = attr;
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b714d78..2472e71 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -740,6 +740,12 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
if (!__pci_complete_power_transition(dev, state))
error = 0;
+ /*
+ * When aspm_policy is "powersave" this call ensures
+ * that ASPM is configured.
+ */
+ if (!error && dev->bus->self)
+ pcie_aspm_powersave_config_link(dev->bus->self);
return error;
}
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index f69d6e0..a6ec200 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -11,7 +11,7 @@
extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
-#ifndef CONFIG_DMI
+#if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
{ return; }
static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig
index dda7098..dc29348 100644
--- a/drivers/pci/pcie/Kconfig
+++ b/drivers/pci/pcie/Kconfig
@@ -31,7 +31,7 @@ source "drivers/pci/pcie/aer/Kconfig"
# PCI Express ASPM
#
config PCIEASPM
- bool "PCI Express ASPM control" if EMBEDDED
+ bool "PCI Express ASPM control" if EXPERT
depends on PCI && PCIEPORTBUS
default y
help
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c
index b3cf622..f62079f 100644
--- a/drivers/pci/pcie/aer/aer_inject.c
+++ b/drivers/pci/pcie/aer/aer_inject.c
@@ -27,6 +27,10 @@
#include <linux/stddef.h>
#include "aerdrv.h"
+/* Override the existing corrected and uncorrected error masks */
+static int aer_mask_override;
+module_param(aer_mask_override, bool, 0);
+
struct aer_error_inj {
u8 bus;
u8 dev;
@@ -322,7 +326,7 @@ static int aer_inject(struct aer_error_inj *einj)
unsigned long flags;
unsigned int devfn = PCI_DEVFN(einj->dev, einj->fn);
int pos_cap_err, rp_pos_cap_err;
- u32 sever, cor_mask, uncor_mask;
+ u32 sever, cor_mask, uncor_mask, cor_mask_orig, uncor_mask_orig;
int ret = 0;
dev = pci_get_domain_bus_and_slot((int)einj->domain, einj->bus, devfn);
@@ -361,6 +365,18 @@ static int aer_inject(struct aer_error_inj *einj)
goto out_put;
}
+ if (aer_mask_override) {
+ cor_mask_orig = cor_mask;
+ cor_mask &= !(einj->cor_status);
+ pci_write_config_dword(dev, pos_cap_err + PCI_ERR_COR_MASK,
+ cor_mask);
+
+ uncor_mask_orig = uncor_mask;
+ uncor_mask &= !(einj->uncor_status);
+ pci_write_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK,
+ uncor_mask);
+ }
+
spin_lock_irqsave(&inject_lock, flags);
err = __find_aer_error_by_dev(dev);
@@ -378,14 +394,16 @@ static int aer_inject(struct aer_error_inj *einj)
err->header_log2 = einj->header_log2;
err->header_log3 = einj->header_log3;
- if (einj->cor_status && !(einj->cor_status & ~cor_mask)) {
+ if (!aer_mask_override && einj->cor_status &&
+ !(einj->cor_status & ~cor_mask)) {
ret = -EINVAL;
printk(KERN_WARNING "The correctable error(s) is masked "
"by device\n");
spin_unlock_irqrestore(&inject_lock, flags);
goto out_put;
}
- if (einj->uncor_status && !(einj->uncor_status & ~uncor_mask)) {
+ if (!aer_mask_override && einj->uncor_status &&
+ !(einj->uncor_status & ~uncor_mask)) {
ret = -EINVAL;
printk(KERN_WARNING "The uncorrectable error(s) is masked "
"by device\n");
@@ -425,6 +443,13 @@ static int aer_inject(struct aer_error_inj *einj)
}
spin_unlock_irqrestore(&inject_lock, flags);
+ if (aer_mask_override) {
+ pci_write_config_dword(dev, pos_cap_err + PCI_ERR_COR_MASK,
+ cor_mask_orig);
+ pci_write_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK,
+ uncor_mask_orig);
+ }
+
ret = pci_bus_set_aer_ops(dev->bus);
if (ret)
goto out_put;
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index 80c11d1..3eb7708 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -35,13 +35,6 @@
PCI_ERR_UNC_UNX_COMP| \
PCI_ERR_UNC_MALF_TLP)
-struct header_log_regs {
- unsigned int dw0;
- unsigned int dw1;
- unsigned int dw2;
- unsigned int dw3;
-};
-
#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
struct aer_err_info {
struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
@@ -59,7 +52,7 @@ struct aer_err_info {
unsigned int status; /* COR/UNCOR Error Status */
unsigned int mask; /* COR/UNCOR Error Mask */
- struct header_log_regs tlp; /* TLP Header */
+ struct aer_header_log_regs tlp; /* TLP Header */
};
struct aer_err_source {
diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
index 9d3e4c8..b07a42e 100644
--- a/drivers/pci/pcie/aer/aerdrv_errprint.c
+++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
@@ -19,6 +19,7 @@
#include <linux/errno.h>
#include <linux/pm.h>
#include <linux/suspend.h>
+#include <linux/cper.h>
#include "aerdrv.h"
@@ -57,86 +58,44 @@
(e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \
AER_TRANSACTION_LAYER_ERROR)
-#define AER_PR(info, pdev, fmt, args...) \
- printk("%s%s %s: " fmt, (info->severity == AER_CORRECTABLE) ? \
- KERN_WARNING : KERN_ERR, dev_driver_string(&pdev->dev), \
- dev_name(&pdev->dev), ## args)
-
/*
* AER error strings
*/
-static char *aer_error_severity_string[] = {
+static const char *aer_error_severity_string[] = {
"Uncorrected (Non-Fatal)",
"Uncorrected (Fatal)",
"Corrected"
};
-static char *aer_error_layer[] = {
+static const char *aer_error_layer[] = {
"Physical Layer",
"Data Link Layer",
"Transaction Layer"
};
-static char *aer_correctable_error_string[] = {
- "Receiver Error ", /* Bit Position 0 */
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- "Bad TLP ", /* Bit Position 6 */
- "Bad DLLP ", /* Bit Position 7 */
- "RELAY_NUM Rollover ", /* Bit Position 8 */
- NULL,
- NULL,
- NULL,
- "Replay Timer Timeout ", /* Bit Position 12 */
- "Advisory Non-Fatal ", /* Bit Position 13 */
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
+
+static const char *aer_correctable_error_string[] = {
+ "Receiver Error", /* Bit Position 0 */
NULL,
NULL,
NULL,
NULL,
NULL,
+ "Bad TLP", /* Bit Position 6 */
+ "Bad DLLP", /* Bit Position 7 */
+ "RELAY_NUM Rollover", /* Bit Position 8 */
NULL,
NULL,
NULL,
+ "Replay Timer Timeout", /* Bit Position 12 */
+ "Advisory Non-Fatal", /* Bit Position 13 */
};
-static char *aer_uncorrectable_error_string[] = {
- NULL,
- NULL,
- NULL,
- NULL,
- "Data Link Protocol ", /* Bit Position 4 */
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- "Poisoned TLP ", /* Bit Position 12 */
- "Flow Control Protocol ", /* Bit Position 13 */
- "Completion Timeout ", /* Bit Position 14 */
- "Completer Abort ", /* Bit Position 15 */
- "Unexpected Completion ", /* Bit Position 16 */
- "Receiver Overflow ", /* Bit Position 17 */
- "Malformed TLP ", /* Bit Position 18 */
- "ECRC ", /* Bit Position 19 */
- "Unsupported Request ", /* Bit Position 20 */
+static const char *aer_uncorrectable_error_string[] = {
NULL,
NULL,
NULL,
NULL,
+ "Data Link Protocol", /* Bit Position 4 */
NULL,
NULL,
NULL,
@@ -144,19 +103,29 @@ static char *aer_uncorrectable_error_string[] = {
NULL,
NULL,
NULL,
+ "Poisoned TLP", /* Bit Position 12 */
+ "Flow Control Protocol", /* Bit Position 13 */
+ "Completion Timeout", /* Bit Position 14 */
+ "Completer Abort", /* Bit Position 15 */
+ "Unexpected Completion", /* Bit Position 16 */
+ "Receiver Overflow", /* Bit Position 17 */
+ "Malformed TLP", /* Bit Position 18 */
+ "ECRC", /* Bit Position 19 */
+ "Unsupported Request", /* Bit Position 20 */
};
-static char *aer_agent_string[] = {
+static const char *aer_agent_string[] = {
"Receiver ID",
"Requester ID",
"Completer ID",
"Transmitter ID"
};
-static void __aer_print_error(struct aer_err_info *info, struct pci_dev *dev)
+static void __aer_print_error(const char *prefix,
+ struct aer_err_info *info)
{
int i, status;
- char *errmsg = NULL;
+ const char *errmsg = NULL;
status = (info->status & ~info->mask);
@@ -165,15 +134,17 @@ static void __aer_print_error(struct aer_err_info *info, struct pci_dev *dev)
continue;
if (info->severity == AER_CORRECTABLE)
- errmsg = aer_correctable_error_string[i];
+ errmsg = i < ARRAY_SIZE(aer_correctable_error_string) ?
+ aer_correctable_error_string[i] : NULL;
else
- errmsg = aer_uncorrectable_error_string[i];
+ errmsg = i < ARRAY_SIZE(aer_uncorrectable_error_string) ?
+ aer_uncorrectable_error_string[i] : NULL;
if (errmsg)
- AER_PR(info, dev, " [%2d] %s%s\n", i, errmsg,
+ printk("%s"" [%2d] %-22s%s\n", prefix, i, errmsg,
info->first_error == i ? " (First)" : "");
else
- AER_PR(info, dev, " [%2d] Unknown Error Bit%s\n", i,
+ printk("%s"" [%2d] Unknown Error Bit%s\n", prefix, i,
info->first_error == i ? " (First)" : "");
}
}
@@ -181,11 +152,15 @@ static void __aer_print_error(struct aer_err_info *info, struct pci_dev *dev)
void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
{
int id = ((dev->bus->number << 8) | dev->devfn);
+ char prefix[44];
+
+ snprintf(prefix, sizeof(prefix), "%s%s %s: ",
+ (info->severity == AER_CORRECTABLE) ? KERN_WARNING : KERN_ERR,
+ dev_driver_string(&dev->dev), dev_name(&dev->dev));
if (info->status == 0) {
- AER_PR(info, dev,
- "PCIe Bus Error: severity=%s, type=Unaccessible, "
- "id=%04x(Unregistered Agent ID)\n",
+ printk("%s""PCIe Bus Error: severity=%s, type=Unaccessible, "
+ "id=%04x(Unregistered Agent ID)\n", prefix,
aer_error_severity_string[info->severity], id);
} else {
int layer, agent;
@@ -193,23 +168,22 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
layer = AER_GET_LAYER_ERROR(info->severity, info->status);
agent = AER_GET_AGENT(info->severity, info->status);
- AER_PR(info, dev,
- "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n",
- aer_error_severity_string[info->severity],
+ printk("%s""PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n",
+ prefix, aer_error_severity_string[info->severity],
aer_error_layer[layer], id, aer_agent_string[agent]);
- AER_PR(info, dev,
- " device [%04x:%04x] error status/mask=%08x/%08x\n",
- dev->vendor, dev->device, info->status, info->mask);
+ printk("%s"" device [%04x:%04x] error status/mask=%08x/%08x\n",
+ prefix, dev->vendor, dev->device,
+ info->status, info->mask);
- __aer_print_error(info, dev);
+ __aer_print_error(prefix, info);
if (info->tlp_header_valid) {
unsigned char *tlp = (unsigned char *) &info->tlp;
- AER_PR(info, dev, " TLP Header:"
+ printk("%s"" TLP Header:"
" %02x%02x%02x%02x %02x%02x%02x%02x"
" %02x%02x%02x%02x %02x%02x%02x%02x\n",
- *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
+ prefix, *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
*(tlp + 11), *(tlp + 10), *(tlp + 9),
*(tlp + 8), *(tlp + 15), *(tlp + 14),
@@ -218,8 +192,8 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
}
if (info->id && info->error_dev_num > 1 && info->id == id)
- AER_PR(info, dev,
- " Error of this Agent(%04x) is reported first\n", id);
+ printk("%s"" Error of this Agent(%04x) is reported first\n",
+ prefix, id);
}
void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info)
@@ -228,3 +202,61 @@ void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info)
info->multi_error_valid ? "Multiple " : "",
aer_error_severity_string[info->severity], info->id);
}
+
+#ifdef CONFIG_ACPI_APEI_PCIEAER
+static int cper_severity_to_aer(int cper_severity)
+{
+ switch (cper_severity) {
+ case CPER_SEV_RECOVERABLE:
+ return AER_NONFATAL;
+ case CPER_SEV_FATAL:
+ return AER_FATAL;
+ default:
+ return AER_CORRECTABLE;
+ }
+}
+
+void cper_print_aer(const char *prefix, int cper_severity,
+ struct aer_capability_regs *aer)
+{
+ int aer_severity, layer, agent, status_strs_size, tlp_header_valid = 0;
+ u32 status, mask;
+ const char **status_strs;
+
+ aer_severity = cper_severity_to_aer(cper_severity);
+ if (aer_severity == AER_CORRECTABLE) {
+ status = aer->cor_status;
+ mask = aer->cor_mask;
+ status_strs = aer_correctable_error_string;
+ status_strs_size = ARRAY_SIZE(aer_correctable_error_string);
+ } else {
+ status = aer->uncor_status;
+ mask = aer->uncor_mask;
+ status_strs = aer_uncorrectable_error_string;
+ status_strs_size = ARRAY_SIZE(aer_uncorrectable_error_string);
+ tlp_header_valid = status & AER_LOG_TLP_MASKS;
+ }
+ layer = AER_GET_LAYER_ERROR(aer_severity, status);
+ agent = AER_GET_AGENT(aer_severity, status);
+ printk("%s""aer_status: 0x%08x, aer_mask: 0x%08x\n",
+ prefix, status, mask);
+ cper_print_bits(prefix, status, status_strs, status_strs_size);
+ printk("%s""aer_layer=%s, aer_agent=%s\n", prefix,
+ aer_error_layer[layer], aer_agent_string[agent]);
+ if (aer_severity != AER_CORRECTABLE)
+ printk("%s""aer_uncor_severity: 0x%08x\n",
+ prefix, aer->uncor_severity);
+ if (tlp_header_valid) {
+ const unsigned char *tlp;
+ tlp = (const unsigned char *)&aer->header_log;
+ printk("%s""aer_tlp_header:"
+ " %02x%02x%02x%02x %02x%02x%02x%02x"
+ " %02x%02x%02x%02x %02x%02x%02x%02x\n",
+ prefix, *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
+ *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
+ *(tlp + 11), *(tlp + 10), *(tlp + 9),
+ *(tlp + 8), *(tlp + 15), *(tlp + 14),
+ *(tlp + 13), *(tlp + 12));
+ }
+}
+#endif
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 3188cd9..eee09f7 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -69,6 +69,7 @@ struct pcie_link_state {
};
static int aspm_disabled, aspm_force, aspm_clear_state;
+static bool aspm_support_enabled = true;
static DEFINE_MUTEX(aspm_lock);
static LIST_HEAD(link_list);
@@ -707,6 +708,28 @@ void pcie_aspm_pm_state_change(struct pci_dev *pdev)
up_read(&pci_bus_sem);
}
+void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
+{
+ struct pcie_link_state *link = pdev->link_state;
+
+ if (aspm_disabled || !pci_is_pcie(pdev) || !link)
+ return;
+
+ if (aspm_policy != POLICY_POWERSAVE)
+ return;
+
+ if ((pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT) &&
+ (pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM))
+ return;
+
+ down_read(&pci_bus_sem);
+ mutex_lock(&aspm_lock);
+ pcie_config_aspm_path(link);
+ pcie_set_clkpm(link, policy_to_clkpm_state(link));
+ mutex_unlock(&aspm_lock);
+ up_read(&pci_bus_sem);
+}
+
/*
* pci_disable_link_state - disable pci device's link state, so the link will
* never enter specific states
@@ -747,6 +770,8 @@ static int pcie_aspm_set_policy(const char *val, struct kernel_param *kp)
int i;
struct pcie_link_state *link;
+ if (aspm_disabled)
+ return -EPERM;
for (i = 0; i < ARRAY_SIZE(policy_str); i++)
if (!strncmp(val, policy_str[i], strlen(policy_str[i])))
break;
@@ -801,6 +826,8 @@ static ssize_t link_state_store(struct device *dev,
struct pcie_link_state *link, *root = pdev->link_state->root;
u32 val = buf[0] - '0', state = 0;
+ if (aspm_disabled)
+ return -EPERM;
if (n < 1 || val > 3)
return -EINVAL;
@@ -896,6 +923,7 @@ static int __init pcie_aspm_disable(char *str)
{
if (!strcmp(str, "off")) {
aspm_disabled = 1;
+ aspm_support_enabled = false;
printk(KERN_INFO "PCIe ASPM is disabled\n");
} else if (!strcmp(str, "force")) {
aspm_force = 1;
@@ -930,3 +958,8 @@ int pcie_aspm_enabled(void)
}
EXPORT_SYMBOL(pcie_aspm_enabled);
+bool pcie_aspm_support_enabled(void)
+{
+ return aspm_support_enabled;
+}
+EXPORT_SYMBOL(pcie_aspm_support_enabled);
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index 5130d0d..595654a 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -15,7 +15,6 @@
#include <linux/slab.h>
#include <linux/pcieport_if.h>
#include <linux/aer.h>
-#include <linux/pci-aspm.h>
#include "../pci.h"
#include "portdrv.h"
@@ -356,10 +355,8 @@ int pcie_port_device_register(struct pci_dev *dev)
/* Get and check PCI Express port services */
capabilities = get_port_device_capability(dev);
- if (!capabilities) {
- pcie_no_aspm();
+ if (!capabilities)
return 0;
- }
pci_set_master(dev);
/*
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index c84900d..44cbbba 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -764,6 +764,8 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
if (pci_find_bus(pci_domain_nr(bus), max+1))
goto out;
child = pci_add_new_bus(bus, dev, ++max);
+ if (!child)
+ goto out;
buses = (buses & 0xff000000)
| ((unsigned int)(child->primary) << 0)
| ((unsigned int)(child->secondary) << 8)
@@ -777,7 +779,7 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
buses &= ~0xff000000;
buses |= CARDBUS_LATENCY_TIMER << 24;
}
-
+
/*
* We need to blast all three values with a single write.
*/
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 53a786f..5129ed6 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -263,7 +263,7 @@ static void quirk_vialatency(struct pci_dev *dev)
* This happens to include the IDE controllers....
*
* VIA only apply this fix when an SB Live! is present but under
- * both Linux and Windows this isnt enough, and we have seen
+ * both Linux and Windows this isn't enough, and we have seen
* corruption without SB Live! but with things like 3 UDMA IDE
* controllers. So we ignore that bit of the VIA recommendation..
*/
@@ -533,6 +533,17 @@ static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
+#define ICH_PMBASE 0x40
+#define ICH_ACPI_CNTL 0x44
+#define ICH4_ACPI_EN 0x10
+#define ICH6_ACPI_EN 0x80
+#define ICH4_GPIOBASE 0x58
+#define ICH4_GPIO_CNTL 0x5c
+#define ICH4_GPIO_EN 0x10
+#define ICH6_GPIOBASE 0x48
+#define ICH6_GPIO_CNTL 0x4c
+#define ICH6_GPIO_EN 0x10
+
/*
* ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
* 0x40 (128 bytes of ACPI, GPIO & TCO registers)
@@ -541,12 +552,33 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, qui
static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
{
u32 region;
+ u8 enable;
- pci_read_config_dword(dev, 0x40, &region);
- quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO");
+ /*
+ * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
+ * with low legacy (and fixed) ports. We don't know the decoding
+ * priority and can't tell whether the legacy device or the one created
+ * here is really at that address. This happens on boards with broken
+ * BIOSes.
+ */
+
+ pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
+ if (enable & ICH4_ACPI_EN) {
+ pci_read_config_dword(dev, ICH_PMBASE, &region);
+ region &= PCI_BASE_ADDRESS_IO_MASK;
+ if (region >= PCIBIOS_MIN_IO)
+ quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
+ "ICH4 ACPI/GPIO/TCO");
+ }
- pci_read_config_dword(dev, 0x58, &region);
- quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO");
+ pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
+ if (enable & ICH4_GPIO_EN) {
+ pci_read_config_dword(dev, ICH4_GPIOBASE, &region);
+ region &= PCI_BASE_ADDRESS_IO_MASK;
+ if (region >= PCIBIOS_MIN_IO)
+ quirk_io_region(dev, region, 64,
+ PCI_BRIDGE_RESOURCES + 1, "ICH4 GPIO");
+ }
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
@@ -562,12 +594,25 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, qui
static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
{
u32 region;
+ u8 enable;
- pci_read_config_dword(dev, 0x40, &region);
- quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO");
+ pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
+ if (enable & ICH6_ACPI_EN) {
+ pci_read_config_dword(dev, ICH_PMBASE, &region);
+ region &= PCI_BASE_ADDRESS_IO_MASK;
+ if (region >= PCIBIOS_MIN_IO)
+ quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
+ "ICH6 ACPI/GPIO/TCO");
+ }
- pci_read_config_dword(dev, 0x48, &region);
- quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO");
+ pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
+ if (enable & ICH4_GPIO_EN) {
+ pci_read_config_dword(dev, ICH6_GPIOBASE, &region);
+ region &= PCI_BASE_ADDRESS_IO_MASK;
+ if (region >= PCIBIOS_MIN_IO)
+ quirk_io_region(dev, region, 64,
+ PCI_BRIDGE_RESOURCES + 1, "ICH6 GPIO");
+ }
}
static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
@@ -2618,58 +2663,6 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
#endif /* CONFIG_PCI_MSI */
-#ifdef CONFIG_PCI_IOV
-
-/*
- * For Intel 82576 SR-IOV NIC, if BIOS doesn't allocate resources for the
- * SR-IOV BARs, zero the Flash BAR and program the SR-IOV BARs to use the
- * old Flash Memory Space.
- */
-static void __devinit quirk_i82576_sriov(struct pci_dev *dev)
-{
- int pos, flags;
- u32 bar, start, size;
-
- if (PAGE_SIZE > 0x10000)
- return;
-
- flags = pci_resource_flags(dev, 0);
- if ((flags & PCI_BASE_ADDRESS_SPACE) !=
- PCI_BASE_ADDRESS_SPACE_MEMORY ||
- (flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) !=
- PCI_BASE_ADDRESS_MEM_TYPE_32)
- return;
-
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
- if (!pos)
- return;
-
- pci_read_config_dword(dev, pos + PCI_SRIOV_BAR, &bar);
- if (bar & PCI_BASE_ADDRESS_MEM_MASK)
- return;
-
- start = pci_resource_start(dev, 1);
- size = pci_resource_len(dev, 1);
- if (!start || size != 0x400000 || start & (size - 1))
- return;
-
- pci_resource_flags(dev, 1) = 0;
- pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
- pci_write_config_dword(dev, pos + PCI_SRIOV_BAR, start);
- pci_write_config_dword(dev, pos + PCI_SRIOV_BAR + 12, start + size / 2);
-
- dev_info(&dev->dev, "use Flash Memory Space for SR-IOV BARs\n");
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10c9, quirk_i82576_sriov);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e6, quirk_i82576_sriov);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e7, quirk_i82576_sriov);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x10e8, quirk_i82576_sriov);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150a, quirk_i82576_sriov);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x150d, quirk_i82576_sriov);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1518, quirk_i82576_sriov);
-
-#endif /* CONFIG_PCI_IOV */
-
/* Allow manual resource allocation for PCI hotplug bridges
* via pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For
* some PCI-PCI hotplug bridges, like PLX 6254 (former HINT HB6),
@@ -2687,7 +2680,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
* This is a quirk for the Ricoh MMC controller found as a part of
* some mulifunction chips.
- * This is very similiar and based on the ricoh_mmc driver written by
+ * This is very similar and based on the ricoh_mmc driver written by
* Philip Langdale. Thank you for these magic sequences.
*
* These chips implement the four main memory card controllers (SD, MMC, MS, xD)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 66cb8f4..ebf51ad 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -33,11 +33,32 @@ struct resource_list_x {
struct pci_dev *dev;
resource_size_t start;
resource_size_t end;
+ resource_size_t add_size;
unsigned long flags;
};
-static void add_to_failed_list(struct resource_list_x *head,
- struct pci_dev *dev, struct resource *res)
+#define free_list(type, head) do { \
+ struct type *list, *tmp; \
+ for (list = (head)->next; list;) { \
+ tmp = list; \
+ list = list->next; \
+ kfree(tmp); \
+ } \
+ (head)->next = NULL; \
+} while (0)
+
+/**
+ * add_to_list() - add a new resource tracker to the list
+ * @head: Head of the list
+ * @dev: device corresponding to which the resource
+ * belongs
+ * @res: The resource to be tracked
+ * @add_size: additional size to be optionally added
+ * to the resource
+ */
+static void add_to_list(struct resource_list_x *head,
+ struct pci_dev *dev, struct resource *res,
+ resource_size_t add_size)
{
struct resource_list_x *list = head;
struct resource_list_x *ln = list->next;
@@ -45,7 +66,7 @@ static void add_to_failed_list(struct resource_list_x *head,
tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
if (!tmp) {
- pr_warning("add_to_failed_list: kmalloc() failed!\n");
+ pr_warning("add_to_list: kmalloc() failed!\n");
return;
}
@@ -55,20 +76,14 @@ static void add_to_failed_list(struct resource_list_x *head,
tmp->start = res->start;
tmp->end = res->end;
tmp->flags = res->flags;
+ tmp->add_size = add_size;
list->next = tmp;
}
-static void free_failed_list(struct resource_list_x *head)
+static void add_to_failed_list(struct resource_list_x *head,
+ struct pci_dev *dev, struct resource *res)
{
- struct resource_list_x *list, *tmp;
-
- for (list = head->next; list;) {
- tmp = list;
- list = list->next;
- kfree(tmp);
- }
-
- head->next = NULL;
+ add_to_list(head, dev, res, 0);
}
static void __dev_sort_resources(struct pci_dev *dev,
@@ -91,18 +106,88 @@ static void __dev_sort_resources(struct pci_dev *dev,
pdev_sort_resources(dev, head);
}
-static void __assign_resources_sorted(struct resource_list *head,
- struct resource_list_x *fail_head)
+static inline void reset_resource(struct resource *res)
+{
+ res->start = 0;
+ res->end = 0;
+ res->flags = 0;
+}
+
+/**
+ * adjust_resources_sorted() - satisfy any additional resource requests
+ *
+ * @add_head : head of the list tracking requests requiring additional
+ * resources
+ * @head : head of the list tracking requests with allocated
+ * resources
+ *
+ * Walk through each element of the add_head and try to procure
+ * additional resources for the element, provided the element
+ * is in the head list.
+ */
+static void adjust_resources_sorted(struct resource_list_x *add_head,
+ struct resource_list *head)
{
struct resource *res;
- struct resource_list *list, *tmp;
+ struct resource_list_x *list, *tmp, *prev;
+ struct resource_list *hlist;
+ resource_size_t add_size;
int idx;
- for (list = head->next; list;) {
+ prev = add_head;
+ for (list = add_head->next; list;) {
res = list->res;
+ /* skip resource that has been reset */
+ if (!res->flags)
+ goto out;
+
+ /* skip this resource if not found in head list */
+ for (hlist = head->next; hlist && hlist->res != res;
+ hlist = hlist->next);
+ if (!hlist) { /* just skip */
+ prev = list;
+ list = list->next;
+ continue;
+ }
+
idx = res - &list->dev->resource[0];
+ add_size=list->add_size;
+ if (!resource_size(res) && add_size) {
+ res->end = res->start + add_size - 1;
+ if(pci_assign_resource(list->dev, idx))
+ reset_resource(res);
+ } else if (add_size) {
+ adjust_resource(res, res->start,
+ resource_size(res) + add_size);
+ }
+out:
+ tmp = list;
+ prev->next = list = list->next;
+ kfree(tmp);
+ }
+}
+
+/**
+ * assign_requested_resources_sorted() - satisfy resource requests
+ *
+ * @head : head of the list tracking requests for resources
+ * @failed_list : head of the list tracking requests that could
+ * not be allocated
+ *
+ * Satisfy resource requests of each element in the list. Add
+ * requests that could not satisfied to the failed_list.
+ */
+static void assign_requested_resources_sorted(struct resource_list *head,
+ struct resource_list_x *fail_head)
+{
+ struct resource *res;
+ struct resource_list *list;
+ int idx;
- if (pci_assign_resource(list->dev, idx)) {
+ for (list = head->next; list; list = list->next) {
+ res = list->res;
+ idx = res - &list->dev->resource[0];
+ if (resource_size(res) && pci_assign_resource(list->dev, idx)) {
if (fail_head && !pci_is_root_bus(list->dev->bus)) {
/*
* if the failed res is for ROM BAR, and it will
@@ -112,16 +197,25 @@ static void __assign_resources_sorted(struct resource_list *head,
(!(res->flags & IORESOURCE_ROM_ENABLE))))
add_to_failed_list(fail_head, list->dev, res);
}
- res->start = 0;
- res->end = 0;
- res->flags = 0;
+ reset_resource(res);
}
- tmp = list;
- list = list->next;
- kfree(tmp);
}
}
+static void __assign_resources_sorted(struct resource_list *head,
+ struct resource_list_x *add_head,
+ struct resource_list_x *fail_head)
+{
+ /* Satisfy the must-have resource requests */
+ assign_requested_resources_sorted(head, fail_head);
+
+ /* Try to satisfy any additional nice-to-have resource
+ requests */
+ if (add_head)
+ adjust_resources_sorted(add_head, head);
+ free_list(resource_list, head);
+}
+
static void pdev_assign_resources_sorted(struct pci_dev *dev,
struct resource_list_x *fail_head)
{
@@ -129,11 +223,12 @@ static void pdev_assign_resources_sorted(struct pci_dev *dev,
head.next = NULL;
__dev_sort_resources(dev, &head);
- __assign_resources_sorted(&head, fail_head);
+ __assign_resources_sorted(&head, NULL, fail_head);
}
static void pbus_assign_resources_sorted(const struct pci_bus *bus,
+ struct resource_list_x *add_head,
struct resource_list_x *fail_head)
{
struct pci_dev *dev;
@@ -143,7 +238,7 @@ static void pbus_assign_resources_sorted(const struct pci_bus *bus,
list_for_each_entry(dev, &bus->devices, bus_list)
__dev_sort_resources(dev, &head);
- __assign_resources_sorted(&head, fail_head);
+ __assign_resources_sorted(&head, add_head, fail_head);
}
void pci_setup_cardbus(struct pci_bus *bus)
@@ -404,15 +499,62 @@ static struct resource *find_free_bus_resource(struct pci_bus *bus, unsigned lon
return NULL;
}
-/* Sizing the IO windows of the PCI-PCI bridge is trivial,
- since these windows have 4K granularity and the IO ranges
- of non-bridge PCI devices are limited to 256 bytes.
- We must be careful with the ISA aliasing though. */
-static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size)
+static resource_size_t calculate_iosize(resource_size_t size,
+ resource_size_t min_size,
+ resource_size_t size1,
+ resource_size_t old_size,
+ resource_size_t align)
+{
+ if (size < min_size)
+ size = min_size;
+ if (old_size == 1 )
+ old_size = 0;
+ /* To be fixed in 2.5: we should have sort of HAVE_ISA
+ flag in the struct pci_bus. */
+#if defined(CONFIG_ISA) || defined(CONFIG_EISA)
+ size = (size & 0xff) + ((size & ~0xffUL) << 2);
+#endif
+ size = ALIGN(size + size1, align);
+ if (size < old_size)
+ size = old_size;
+ return size;
+}
+
+static resource_size_t calculate_memsize(resource_size_t size,
+ resource_size_t min_size,
+ resource_size_t size1,
+ resource_size_t old_size,
+ resource_size_t align)
+{
+ if (size < min_size)
+ size = min_size;
+ if (old_size == 1 )
+ old_size = 0;
+ if (size < old_size)
+ size = old_size;
+ size = ALIGN(size + size1, align);
+ return size;
+}
+
+/**
+ * pbus_size_io() - size the io window of a given bus
+ *
+ * @bus : the bus
+ * @min_size : the minimum io window that must to be allocated
+ * @add_size : additional optional io window
+ * @add_head : track the additional io window on this list
+ *
+ * Sizing the IO windows of the PCI-PCI bridge is trivial,
+ * since these windows have 4K granularity and the IO ranges
+ * of non-bridge PCI devices are limited to 256 bytes.
+ * We must be careful with the ISA aliasing though.
+ */
+static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
+ resource_size_t add_size, struct resource_list_x *add_head)
{
struct pci_dev *dev;
struct resource *b_res = find_free_bus_resource(bus, IORESOURCE_IO);
- unsigned long size = 0, size1 = 0, old_size;
+ unsigned long size = 0, size0 = 0, size1 = 0;
if (!b_res)
return;
@@ -435,20 +577,12 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size)
size1 += r_size;
}
}
- if (size < min_size)
- size = min_size;
- old_size = resource_size(b_res);
- if (old_size == 1)
- old_size = 0;
-/* To be fixed in 2.5: we should have sort of HAVE_ISA
- flag in the struct pci_bus. */
-#if defined(CONFIG_ISA) || defined(CONFIG_EISA)
- size = (size & 0xff) + ((size & ~0xffUL) << 2);
-#endif
- size = ALIGN(size + size1, 4096);
- if (size < old_size)
- size = old_size;
- if (!size) {
+ size0 = calculate_iosize(size, min_size, size1,
+ resource_size(b_res), 4096);
+ size1 = !add_size? size0:
+ calculate_iosize(size, min_size+add_size, size1,
+ resource_size(b_res), 4096);
+ if (!size0 && !size1) {
if (b_res->start || b_res->end)
dev_info(&bus->self->dev, "disabling bridge window "
"%pR to [bus %02x-%02x] (unused)\n", b_res,
@@ -458,17 +592,30 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size)
}
/* Alignment of the IO window is always 4K */
b_res->start = 4096;
- b_res->end = b_res->start + size - 1;
+ b_res->end = b_res->start + size0 - 1;
b_res->flags |= IORESOURCE_STARTALIGN;
+ if (size1 > size0 && add_head)
+ add_to_list(add_head, bus->self, b_res, size1-size0);
}
-/* Calculate the size of the bus and minimal alignment which
- guarantees that all child resources fit in this size. */
+/**
+ * pbus_size_mem() - size the memory window of a given bus
+ *
+ * @bus : the bus
+ * @min_size : the minimum memory window that must to be allocated
+ * @add_size : additional optional memory window
+ * @add_head : track the additional memory window on this list
+ *
+ * Calculate the size of the bus and minimal alignment which
+ * guarantees that all child resources fit in this size.
+ */
static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
- unsigned long type, resource_size_t min_size)
+ unsigned long type, resource_size_t min_size,
+ resource_size_t add_size,
+ struct resource_list_x *add_head)
{
struct pci_dev *dev;
- resource_size_t min_align, align, size, old_size;
+ resource_size_t min_align, align, size, size0, size1;
resource_size_t aligns[12]; /* Alignments from 1Mb to 2Gb */
int order, max_order;
struct resource *b_res = find_free_bus_resource(bus, type);
@@ -516,14 +663,6 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
mem64_mask &= r->flags & IORESOURCE_MEM_64;
}
}
- if (size < min_size)
- size = min_size;
- old_size = resource_size(b_res);
- if (old_size == 1)
- old_size = 0;
- if (size < old_size)
- size = old_size;
-
align = 0;
min_align = 0;
for (order = 0; order <= max_order; order++) {
@@ -537,8 +676,11 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
min_align = align1 >> 1;
align += aligns[order];
}
- size = ALIGN(size, min_align);
- if (!size) {
+ size0 = calculate_memsize(size, min_size, 0, resource_size(b_res), min_align);
+ size1 = !add_size ? size :
+ calculate_memsize(size, min_size+add_size, 0,
+ resource_size(b_res), min_align);
+ if (!size0 && !size1) {
if (b_res->start || b_res->end)
dev_info(&bus->self->dev, "disabling bridge window "
"%pR to [bus %02x-%02x] (unused)\n", b_res,
@@ -547,9 +689,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
return 1;
}
b_res->start = min_align;
- b_res->end = size + min_align - 1;
- b_res->flags |= IORESOURCE_STARTALIGN;
- b_res->flags |= mem64_mask;
+ b_res->end = size0 + min_align - 1;
+ b_res->flags |= IORESOURCE_STARTALIGN | mem64_mask;
+ if (size1 > size0 && add_head)
+ add_to_list(add_head, bus->self, b_res, size1-size0);
return 1;
}
@@ -602,11 +745,12 @@ static void pci_bus_size_cardbus(struct pci_bus *bus)
}
}
-void __ref pci_bus_size_bridges(struct pci_bus *bus)
+void __ref __pci_bus_size_bridges(struct pci_bus *bus,
+ struct resource_list_x *add_head)
{
struct pci_dev *dev;
unsigned long mask, prefmask;
- resource_size_t min_mem_size = 0, min_io_size = 0;
+ resource_size_t additional_mem_size = 0, additional_io_size = 0;
list_for_each_entry(dev, &bus->devices, bus_list) {
struct pci_bus *b = dev->subordinate;
@@ -620,7 +764,7 @@ void __ref pci_bus_size_bridges(struct pci_bus *bus)
case PCI_CLASS_BRIDGE_PCI:
default:
- pci_bus_size_bridges(b);
+ __pci_bus_size_bridges(b, add_head);
break;
}
}
@@ -637,11 +781,14 @@ void __ref pci_bus_size_bridges(struct pci_bus *bus)
case PCI_CLASS_BRIDGE_PCI:
pci_bridge_check_ranges(bus);
if (bus->self->is_hotplug_bridge) {
- min_io_size = pci_hotplug_io_size;
- min_mem_size = pci_hotplug_mem_size;
+ additional_io_size = pci_hotplug_io_size;
+ additional_mem_size = pci_hotplug_mem_size;
}
+ /*
+ * Follow thru
+ */
default:
- pbus_size_io(bus, min_io_size);
+ pbus_size_io(bus, 0, additional_io_size, add_head);
/* If the bridge supports prefetchable range, size it
separately. If it doesn't, or its prefetchable window
has already been allocated by arch code, try
@@ -649,30 +796,36 @@ void __ref pci_bus_size_bridges(struct pci_bus *bus)
resources. */
mask = IORESOURCE_MEM;
prefmask = IORESOURCE_MEM | IORESOURCE_PREFETCH;
- if (pbus_size_mem(bus, prefmask, prefmask, min_mem_size))
+ if (pbus_size_mem(bus, prefmask, prefmask, 0, additional_mem_size, add_head))
mask = prefmask; /* Success, size non-prefetch only. */
else
- min_mem_size += min_mem_size;
- pbus_size_mem(bus, mask, IORESOURCE_MEM, min_mem_size);
+ additional_mem_size += additional_mem_size;
+ pbus_size_mem(bus, mask, IORESOURCE_MEM, 0, additional_mem_size, add_head);
break;
}
}
+
+void __ref pci_bus_size_bridges(struct pci_bus *bus)
+{
+ __pci_bus_size_bridges(bus, NULL);
+}
EXPORT_SYMBOL(pci_bus_size_bridges);
static void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
+ struct resource_list_x *add_head,
struct resource_list_x *fail_head)
{
struct pci_bus *b;
struct pci_dev *dev;
- pbus_assign_resources_sorted(bus, fail_head);
+ pbus_assign_resources_sorted(bus, add_head, fail_head);
list_for_each_entry(dev, &bus->devices, bus_list) {
b = dev->subordinate;
if (!b)
continue;
- __pci_bus_assign_resources(b, fail_head);
+ __pci_bus_assign_resources(b, add_head, fail_head);
switch (dev->class >> 8) {
case PCI_CLASS_BRIDGE_PCI:
@@ -694,7 +847,7 @@ static void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
void __ref pci_bus_assign_resources(const struct pci_bus *bus)
{
- __pci_bus_assign_resources(bus, NULL);
+ __pci_bus_assign_resources(bus, NULL, NULL);
}
EXPORT_SYMBOL(pci_bus_assign_resources);
@@ -709,7 +862,7 @@ static void __ref __pci_bridge_assign_resources(const struct pci_dev *bridge,
if (!b)
return;
- __pci_bus_assign_resources(b, fail_head);
+ __pci_bus_assign_resources(b, NULL, fail_head);
switch (bridge->class >> 8) {
case PCI_CLASS_BRIDGE_PCI:
@@ -842,17 +995,21 @@ void __init
pci_assign_unassigned_resources(void)
{
struct pci_bus *bus;
-
+ struct resource_list_x add_list; /* list of resources that
+ want additional resources */
+ add_list.next = NULL;
/* Depth first, calculate sizes and alignments of all
subordinate buses. */
list_for_each_entry(bus, &pci_root_buses, node) {
- pci_bus_size_bridges(bus);
+ __pci_bus_size_bridges(bus, &add_list);
}
+
/* Depth last, allocate resources and update the hardware. */
list_for_each_entry(bus, &pci_root_buses, node) {
- pci_bus_assign_resources(bus);
+ __pci_bus_assign_resources(bus, &add_list, NULL);
pci_enable_bridges(bus);
}
+ BUG_ON(add_list.next);
/* dump the resource on buses */
list_for_each_entry(bus, &pci_root_buses, node) {
@@ -882,7 +1039,7 @@ again:
if (tried_times >= 2) {
/* still fail, don't need to try more */
- free_failed_list(&head);
+ free_list(resource_list_x, &head);
goto enable_all;
}
@@ -913,7 +1070,7 @@ again:
list = list->next;
}
- free_failed_list(&head);
+ free_list(resource_list_x, &head);
goto again;
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 3a5a6fc..492b7d8 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -243,7 +243,7 @@ struct pci_ops pcifront_bus_ops = {
#ifdef CONFIG_PCI_MSI
static int pci_frontend_enable_msix(struct pci_dev *dev,
- int **vector, int nvec)
+ int vector[], int nvec)
{
int err;
int i;
@@ -277,18 +277,24 @@ static int pci_frontend_enable_msix(struct pci_dev *dev,
if (likely(!err)) {
if (likely(!op.value)) {
/* we get the result */
- for (i = 0; i < nvec; i++)
- *(*vector+i) = op.msix_entries[i].vector;
- return 0;
+ for (i = 0; i < nvec; i++) {
+ if (op.msix_entries[i].vector <= 0) {
+ dev_warn(&dev->dev, "MSI-X entry %d is invalid: %d!\n",
+ i, op.msix_entries[i].vector);
+ err = -EINVAL;
+ vector[i] = -1;
+ continue;
+ }
+ vector[i] = op.msix_entries[i].vector;
+ }
} else {
printk(KERN_DEBUG "enable msix get value %x\n",
op.value);
- return op.value;
}
} else {
dev_err(&dev->dev, "enable msix get err %x\n", err);
- return err;
}
+ return err;
}
static void pci_frontend_disable_msix(struct pci_dev *dev)
@@ -310,7 +316,7 @@ static void pci_frontend_disable_msix(struct pci_dev *dev)
dev_err(&dev->dev, "pci_disable_msix get err %x\n", err);
}
-static int pci_frontend_enable_msi(struct pci_dev *dev, int **vector)
+static int pci_frontend_enable_msi(struct pci_dev *dev, int vector[])
{
int err;
struct xen_pci_op op = {
@@ -324,7 +330,13 @@ static int pci_frontend_enable_msi(struct pci_dev *dev, int **vector)
err = do_pci_op(pdev, &op);
if (likely(!err)) {
- *(*vector) = op.value;
+ vector[0] = op.value;
+ if (op.value <= 0) {
+ dev_warn(&dev->dev, "MSI entry is invalid: %d!\n",
+ op.value);
+ err = -EINVAL;
+ vector[0] = -1;
+ }
} else {
dev_err(&dev->dev, "pci frontend enable msi failed for dev "
"%x:%x\n", op.bus, op.devfn);
@@ -733,8 +745,7 @@ static void free_pdev(struct pcifront_device *pdev)
pcifront_free_roots(pdev);
- /*For PCIE_AER error handling job*/
- flush_scheduled_work();
+ cancel_work_sync(&pdev->op_work);
if (pdev->irq >= 0)
unbind_from_irqhandler(pdev->irq, pdev);
generated by cgit v0.10.2 at 2024-10-14 14:38:49 (GMT)