diff options
| author | Sean V Kelley <sean.v.kelley@intel.com> | 2020-11-21 03:10:34 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-06 00:26:02 +0300 |
| commit | af113553d9610b2d811d05da96263b4f666f44f0 (patch) | |
| tree | 84d4d4ebc1ac320efd325c0cae50885c6d7ab5be /drivers/pci/pcie/aer.c | |
| parent | 5790862255028c831761e13014ee87a06df828f1 (diff) | |
| download | linux-af113553d9610b2d811d05da96263b4f666f44f0.tar.xz | |
PCI/AER: Add pcie_walk_rcec() to RCEC AER handling
Root Complex Event Collectors (RCEC) appear as peers to Root Ports and also
have the AER capability. In addition, actions need to be taken for
associated RCiEPs. In such cases the RCECs will need to be walked in order
to find and act upon their respective RCiEPs.
Extend the existing ability to link the RCECs with a walking function
pcie_walk_rcec(). Add RCEC support to the current AER service driver and
attach the AER service driver to the RCEC device.
Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Link: https://lore.kernel.org/r/20201121001036.8560-14-sean.v.kelley@intel.com
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Diffstat (limited to 'drivers/pci/pcie/aer.c')
| -rw-r--r-- | drivers/pci/pcie/aer.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index e682df536be5..77b0f2c45bc0 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -918,7 +918,10 @@ static bool find_source_device(struct pci_dev *parent, if (result) return true; - pci_walk_bus(parent->subordinate, find_device_iter, e_info); + if (pci_pcie_type(parent) == PCI_EXP_TYPE_RC_EC) + pcie_walk_rcec(parent, find_device_iter, e_info); + else + pci_walk_bus(parent->subordinate, find_device_iter, e_info); if (!e_info->error_dev_num) { pci_info(parent, "can't find device of ID%04x\n", e_info->id); @@ -1056,6 +1059,7 @@ int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info) if (!(info->status & ~info->mask)) return 0; } else if (type == PCI_EXP_TYPE_ROOT_PORT || + type == PCI_EXP_TYPE_RC_EC || type == PCI_EXP_TYPE_DOWNSTREAM || info->severity == AER_NONFATAL) { @@ -1233,9 +1237,12 @@ static void set_downstream_devices_error_reporting(struct pci_dev *dev, { set_device_error_reporting(dev, &enable); - if (!dev->subordinate) - return; - pci_walk_bus(dev->subordinate, set_device_error_reporting, &enable); + if (pci_pcie_type(dev) == PCI_EXP_TYPE_RC_EC) + pcie_walk_rcec(dev, set_device_error_reporting, &enable); + else if (dev->subordinate) + pci_walk_bus(dev->subordinate, set_device_error_reporting, + &enable); + } /** |