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-rw-r--r--drivers/pci/pcie/aer/aerdrv.h17
-rw-r--r--drivers/pci/pcie/aer/aerdrv_acpi.c77
-rw-r--r--drivers/pci/pcie/aer/aerdrv_core.c8
3 files changed, 98 insertions, 4 deletions
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index bd833ea3ba4..7182c337aef 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -134,4 +134,21 @@ static inline int aer_osc_setup(struct pcie_device *pciedev)
}
#endif
+#ifdef CONFIG_ACPI_APEI
+extern int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
+#else
+static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
+{
+ if (pci_dev->__aer_firmware_first_valid)
+ return pci_dev->__aer_firmware_first;
+ return 0;
+}
+#endif
+
+static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev,
+ int enable)
+{
+ pci_dev->__aer_firmware_first = !!enable;
+ pci_dev->__aer_firmware_first_valid = 1;
+}
#endif /* _AERDRV_H_ */
diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c
index 04814087658..f278d7b0d95 100644
--- a/drivers/pci/pcie/aer/aerdrv_acpi.c
+++ b/drivers/pci/pcie/aer/aerdrv_acpi.c
@@ -16,6 +16,7 @@
#include <linux/acpi.h>
#include <linux/pci-acpi.h>
#include <linux/delay.h>
+#include <acpi/apei.h>
#include "aerdrv.h"
/**
@@ -53,3 +54,79 @@ int aer_osc_setup(struct pcie_device *pciedev)
return 0;
}
+
+#ifdef CONFIG_ACPI_APEI
+static inline int hest_match_pci(struct acpi_hest_aer_common *p,
+ struct pci_dev *pci)
+{
+ return (0 == pci_domain_nr(pci->bus) &&
+ p->bus == pci->bus->number &&
+ p->device == PCI_SLOT(pci->devfn) &&
+ p->function == PCI_FUNC(pci->devfn));
+}
+
+struct aer_hest_parse_info {
+ struct pci_dev *pci_dev;
+ int firmware_first;
+};
+
+static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data)
+{
+ struct aer_hest_parse_info *info = data;
+ struct acpi_hest_aer_common *p;
+ u8 pcie_type = 0;
+ u8 bridge = 0;
+ int ff = 0;
+
+ switch (hest_hdr->type) {
+ case ACPI_HEST_TYPE_AER_ROOT_PORT:
+ pcie_type = PCI_EXP_TYPE_ROOT_PORT;
+ break;
+ case ACPI_HEST_TYPE_AER_ENDPOINT:
+ pcie_type = PCI_EXP_TYPE_ENDPOINT;
+ break;
+ case ACPI_HEST_TYPE_AER_BRIDGE:
+ if ((info->pci_dev->class >> 16) == PCI_BASE_CLASS_BRIDGE)
+ bridge = 1;
+ break;
+ default:
+ return 0;
+ }
+
+ p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
+ if (p->flags & ACPI_HEST_GLOBAL) {
+ if ((info->pci_dev->is_pcie &&
+ info->pci_dev->pcie_type == pcie_type) || bridge)
+ ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+ } else
+ if (hest_match_pci(p, info->pci_dev))
+ ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+ info->firmware_first = ff;
+
+ return 0;
+}
+
+static void aer_set_firmware_first(struct pci_dev *pci_dev)
+{
+ int rc;
+ struct aer_hest_parse_info info = {
+ .pci_dev = pci_dev,
+ .firmware_first = 0,
+ };
+
+ rc = apei_hest_parse(aer_hest_parse, &info);
+
+ if (rc)
+ pci_dev->__aer_firmware_first = 0;
+ else
+ pci_dev->__aer_firmware_first = info.firmware_first;
+ pci_dev->__aer_firmware_first_valid = 1;
+}
+
+int pcie_aer_get_firmware_first(struct pci_dev *dev)
+{
+ if (!dev->__aer_firmware_first_valid)
+ aer_set_firmware_first(dev);
+ return dev->__aer_firmware_first;
+}
+#endif
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index aceb04b67b6..586b6713e41 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -36,7 +36,7 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev)
u16 reg16 = 0;
int pos;
- if (dev->aer_firmware_first)
+ if (pcie_aer_get_firmware_first(dev))
return -EIO;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
@@ -64,7 +64,7 @@ int pci_disable_pcie_error_reporting(struct pci_dev *dev)
u16 reg16 = 0;
int pos;
- if (dev->aer_firmware_first)
+ if (pcie_aer_get_firmware_first(dev))
return -EIO;
pos = pci_pcie_cap(dev);
@@ -859,7 +859,7 @@ void aer_delete_rootport(struct aer_rpc *rpc)
*/
int aer_init(struct pcie_device *dev)
{
- if (dev->port->aer_firmware_first) {
+ if (pcie_aer_get_firmware_first(dev->port)) {
dev_printk(KERN_DEBUG, &dev->device,
"PCIe errors handled by platform firmware.\n");
goto out;
@@ -873,7 +873,7 @@ out:
if (forceload) {
dev_printk(KERN_DEBUG, &dev->device,
"aerdrv forceload requested.\n");
- dev->port->aer_firmware_first = 0;
+ pcie_aer_force_firmware_first(dev->port, 0);
return 0;
}
return -ENXIO;