PCI: pcie, aer: report multiple/first error on a device

Multiple bits might be set in the Uncorrectable Error Status
register.  But aer_print_error_source() only report a error of
the lowest bit set in the error status register.

So print strings for all bits unmasked and set.

And check First Error Pointer to mark the error occured first.
This FEP is not valid when the corresponing bit of the Uncorrectable
Error Status register is not set, or unimplemented or undefined.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

3 files changed, 10 insertions, 5 deletions

diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index 0db530db9439..436bf79e2739 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -61,6 +61,7 @@ struct aer_err_info {
         u16 id;
         int severity;                   /* 0:NONFATAL | 1:FATAL | 2:COR */
         int flags;
+        int first;
         unsigned int status;            /* COR/UNCOR Error Status */
         unsigned int mask;              /* COR/UNCOR Error Mask */
         struct header_log_regs tlp;     /* TLP Header */
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index 38b3933200ca..9ba1602aebff 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -698,7 +698,7 @@ static struct aer_err_source *get_e_source(struct aer_rpc *rpc)
 
 static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
 {
-        int pos;
+        int pos, temp;
 
         info->status = 0;
         info->flags &= ~AER_TLP_HEADER_VALID_FLAG;
@@ -727,6 +727,10 @@ static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
                 if (!(info->status & ~info->mask))
                         return AER_UNSUCCESS;
 
+                /* Get First Error Pointer */
+                pci_read_config_dword(dev, pos + PCI_ERR_CAP, &temp);
+                info->first = PCI_ERR_CAP_FEP(temp);
+
                 if (info->status & AER_LOG_TLP_MASKS) {
                         info->flags |= AER_TLP_HEADER_VALID_FLAG;
                         pci_read_config_dword(dev,
diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
index 41bd1c753ace..0bb91e28d5fe 100644
--- a/drivers/pci/pcie/aer/aerdrv_errprint.c
+++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
@@ -169,11 +169,11 @@ static void aer_print_error_source(struct aer_err_info *info)
                         errmsg = aer_uncorrectable_error_string[i];
 
                 if (errmsg)
-                        AER_PR(info, "%s\t:\n", errmsg);
+                        AER_PR(info, "%s\t: %s\n", errmsg,
+                                info->first == i ? "First" : "");
                 else
-                        AER_PR(info, "Unknown Error Bit %2d  \t:\n", i);
-
-                break;
+                        AER_PR(info, "Unknown Error Bit %2d  \t: %s\n",
+                                i, info->first == i ? "First" : "");
         }
 }