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Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pcie/aer/aerdrv.h4
-rw-r--r--drivers/pci/pcie/aer/aerdrv_core.c88
2 files changed, 69 insertions, 23 deletions
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index dadf492e9ce..bbd7428ca2d 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -57,8 +57,10 @@ struct header_log_regs {
unsigned int dw3;
};
+#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
struct aer_err_info {
- struct pci_dev *dev;
+ struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
+ int error_dev_num;
u16 id;
int severity; /* 0:NONFATAL | 1:FATAL | 2:COR */
int flags;
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index 2750e7b266b..3d8872704a5 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -158,6 +158,17 @@ static inline int compare_device_id(struct pci_dev *dev,
return 0;
}
+static int add_error_device(struct aer_err_info *e_info, struct pci_dev *dev)
+{
+ if (e_info->error_dev_num < AER_MAX_MULTI_ERR_DEVICES) {
+ e_info->dev[e_info->error_dev_num] = dev;
+ e_info->error_dev_num++;
+ return 1;
+ } else
+ return 0;
+}
+
+
#define PCI_BUS(x) (((x) >> 8) & 0xff)
static int find_device_iter(struct pci_dev *dev, void *data)
@@ -176,15 +187,31 @@ static int find_device_iter(struct pci_dev *dev, void *data)
if (!nosourceid && (PCI_BUS(e_info->id) != 0)) {
result = compare_device_id(dev, e_info);
if (result)
- e_info->dev = dev;
- return result;
+ add_error_device(e_info, dev);
+
+ /*
+ * If there is no multiple error, we stop
+ * or continue based on the id comparing.
+ */
+ if (!(e_info->flags & AER_MULTI_ERROR_VALID_FLAG))
+ return result;
+
+ /*
+ * If there are multiple errors and id does match,
+ * We need continue to search other devices under
+ * the root port. Return 0 means that.
+ */
+ if (result)
+ return 0;
}
/*
- * Next is to check when bus id is equal to 0 or
- * nosourceid==y. Some ports might lose the bus
- * id of error source id. We check AER status
- * registers to find the initial reporter.
+ * When either
+ * 1) nosourceid==y;
+ * 2) bus id is equal to 0. Some ports might lose the bus
+ * id of error source id;
+ * 3) There are multiple errors and prior id comparing fails;
+ * We check AER status registers to find the initial reporter.
*/
if (atomic_read(&dev->enable_cnt) == 0)
return 0;
@@ -213,8 +240,8 @@ static int find_device_iter(struct pci_dev *dev, void *data)
pos + PCI_ERR_COR_MASK,
&mask);
if (status & ERR_CORRECTABLE_ERROR_MASK & ~mask) {
- e_info->dev = dev;
- return 1;
+ add_error_device(e_info, dev);
+ goto added;
}
} else {
pci_read_config_dword(dev,
@@ -224,12 +251,18 @@ static int find_device_iter(struct pci_dev *dev, void *data)
pos + PCI_ERR_UNCOR_MASK,
&mask);
if (status & ERR_UNCORRECTABLE_ERROR_MASK & ~mask) {
- e_info->dev = dev;
- return 1;
+ add_error_device(e_info, dev);
+ goto added;
}
}
return 0;
+
+added:
+ if (e_info->flags & AER_MULTI_ERROR_VALID_FLAG)
+ return 0;
+ else
+ return 1;
}
/**
@@ -709,6 +742,28 @@ static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
return AER_SUCCESS;
}
+static inline void aer_process_err_devices(struct pcie_device *p_device,
+ struct aer_err_info *e_info)
+{
+ int i;
+
+ if (!e_info->dev[0]) {
+ dev_printk(KERN_DEBUG, &p_device->port->dev,
+ "can't find device of ID%04x\n",
+ e_info->id);
+ }
+
+ for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
+ if (get_device_error_info(e_info->dev[i], e_info) ==
+ AER_SUCCESS) {
+ aer_print_error(e_info->dev[i], e_info);
+ handle_error_source(p_device,
+ e_info->dev[i],
+ e_info);
+ }
+ }
+}
+
/**
* aer_isr_one_error - consume an error detected by root port
* @p_device: pointer to error root port service device
@@ -754,18 +809,7 @@ static void aer_isr_one_error(struct pcie_device *p_device,
e_info->flags |= AER_MULTI_ERROR_VALID_FLAG;
find_source_device(p_device->port, e_info);
- if (e_info->dev == NULL) {
- printk(KERN_DEBUG "%s->can't find device of ID%04x\n",
- __func__, e_info->id);
- continue;
- }
- if (get_device_error_info(e_info->dev, e_info) ==
- AER_SUCCESS) {
- aer_print_error(e_info->dev, e_info);
- handle_error_source(p_device,
- e_info->dev,
- e_info);
- }
+ aer_process_err_devices(p_device, e_info);
}
kfree(e_info);