From: Bjorn Helgaas <helgaas@kernel.org>
To: "Kuppuswamy,
Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
ashok.raj@intel.com
Subject: Re: [PATCH v17 09/12] PCI/AER: Allow clearing Error Status Register in FF mode
Date: Fri, 6 Mar 2020 10:04:01 -0600 [thread overview]
Message-ID: <20200306160401.GA165033@google.com> (raw)
In-Reply-To: <9e4a1632-9425-9fb6-fd1a-d7cee4e9b684@linux.intel.com>
On Thu, Mar 05, 2020 at 09:45:46PM -0800, Kuppuswamy, Sathyanarayanan wrote:
> On 3/3/2020 6:36 PM, sathyanarayanan.kuppuswamy@linux.intel.com wrote:
> > From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> >
> > As per PCI firmware specification r3.2 System Firmware Intermediary
> > (SFI) _OSC and DPC Updates ECR
> > (https://members.pcisig.com/wg/PCI-SIG/document/13563), sec titled "DPC
> > Event Handling Implementation Note", page 10, Error Disconnect Recover
> > (EDR) support allows OS to handle error recovery and clearing Error
> > Registers even in FF mode. So create new API pci_aer_raw_clear_status()
> > which allows clearing AER registers without FF mode checks.
> >
> > Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> > ---
> > drivers/pci/pci.h | 2 ++
> > drivers/pci/pcie/aer.c | 22 ++++++++++++++++++----
> > 2 files changed, 20 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> > index e57e78b619f8..c239e6dd2542 100644
> > --- a/drivers/pci/pci.h
> > +++ b/drivers/pci/pci.h
> > @@ -655,6 +655,7 @@ extern const struct attribute_group aer_stats_attr_group;
> > void pci_aer_clear_fatal_status(struct pci_dev *dev);
> > void pci_aer_clear_device_status(struct pci_dev *dev);
> > int pci_cleanup_aer_error_status_regs(struct pci_dev *dev);
> > +int pci_aer_raw_clear_status(struct pci_dev *dev);
> > #else
> > static inline void pci_no_aer(void) { }
> > static inline void pci_aer_init(struct pci_dev *d) { }
> > @@ -665,6 +666,7 @@ static inline int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
> > {
> > return -EINVAL;
> > }
> > +int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
> It's missing static specifier. It needs to be fixed. I can fix it in
> next version. Bjorn, if there is no need for next version, can you
> please make this change?
pci_aer_raw_clear_status() is defined in aer.c and called from aer.c
and edr.c, so I do not think it can be static. Am I missing
something?
I have a review/edr branch that I hope becomes what will be applied.
Bjorn
next prev parent reply other threads:[~2020-03-06 16:04 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-04 2:36 [PATCH v17 00/12] Add Error Disconnect Recover (EDR) support sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 01/12] PCI/ERR: Update error status after reset_link() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 02/12] PCI/AER: Move pci_cleanup_aer_error_status_regs() declaration to pci.h sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 03/12] PCI/ERR: Remove service dependency in pcie_do_recovery() sathyanarayanan.kuppuswamy
2020-03-17 14:40 ` Christoph Hellwig
2020-03-04 2:36 ` [PATCH v17 04/12] PCI: portdrv: remove unnecessary pcie_port_find_service() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 05/12] PCI: portdrv: remove reset_link member from pcie_port_service_driver sathyanarayanan.kuppuswamy
2020-03-17 14:41 ` Christoph Hellwig
2020-03-17 14:55 ` Kuppuswamy, Sathyanarayanan
2020-03-04 2:36 ` [PATCH v17 06/12] Documentation: PCI: Remove reset_link references sathyanarayanan.kuppuswamy
2020-03-17 14:42 ` Christoph Hellwig
2020-03-17 15:05 ` Kuppuswamy, Sathyanarayanan
2020-03-17 15:07 ` Christoph Hellwig
2020-03-17 16:03 ` Bjorn Helgaas
2020-03-17 17:06 ` Christoph Hellwig
2020-03-19 22:52 ` Bjorn Helgaas
2020-03-04 2:36 ` [PATCH v17 07/12] PCI/ERR: Return status of pcie_do_recovery() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 08/12] PCI/DPC: Cache DPC capabilities in pci_init_capabilities() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 09/12] PCI/AER: Allow clearing Error Status Register in FF mode sathyanarayanan.kuppuswamy
2020-03-06 5:45 ` Kuppuswamy, Sathyanarayanan
2020-03-06 16:04 ` Bjorn Helgaas [this message]
2020-03-06 16:11 ` Kuppuswamy, Sathyanarayanan
2020-03-06 16:41 ` Bjorn Helgaas
2020-03-10 2:40 ` Bjorn Helgaas
2020-03-10 4:28 ` Kuppuswamy, Sathyanarayanan
2020-03-10 18:14 ` Austin.Bolen
2020-03-10 19:32 ` Bjorn Helgaas
2020-03-10 20:06 ` Austin.Bolen
2020-03-10 20:41 ` Kuppuswamy Sathyanarayanan
2020-03-10 20:49 ` Austin.Bolen
2020-03-11 14:45 ` Bjorn Helgaas
2020-03-11 15:19 ` Austin.Bolen
2020-03-11 17:12 ` Bjorn Helgaas
2020-03-11 17:27 ` Austin.Bolen
2020-03-11 20:33 ` Bjorn Helgaas
2020-03-11 21:25 ` Kuppuswamy Sathyanarayanan
2020-03-11 21:53 ` Austin.Bolen
2020-03-11 22:11 ` Kuppuswamy Sathyanarayanan
2020-03-11 22:23 ` Bjorn Helgaas
2020-03-11 23:07 ` Kuppuswamy Sathyanarayanan
2020-03-12 19:53 ` Bjorn Helgaas
2020-03-12 21:02 ` Austin.Bolen
2020-03-12 21:29 ` Kuppuswamy Sathyanarayanan
2020-03-12 21:52 ` Bjorn Helgaas
2020-03-12 22:02 ` Kuppuswamy Sathyanarayanan
2020-03-12 22:36 ` Bjorn Helgaas
2020-03-12 21:59 ` Kuppuswamy Sathyanarayanan
2020-03-12 22:32 ` Bjorn Helgaas
2020-03-13 6:22 ` Kuppuswamy, Sathyanarayanan
2020-03-13 19:28 ` Bjorn Helgaas
2020-03-13 20:26 ` Kuppuswamy Sathyanarayanan
2020-03-19 23:03 ` Bjorn Helgaas
2020-03-19 23:20 ` Kuppuswamy, Sathyanarayanan
2020-03-11 22:13 ` Bjorn Helgaas
2020-03-11 22:41 ` Kuppuswamy Sathyanarayanan
2020-03-11 18:12 ` Kuppuswamy Sathyanarayanan
2020-03-11 22:05 ` Bjorn Helgaas
2020-03-04 2:36 ` [PATCH v17 10/12] PCI/DPC: Export DPC error recovery functions sathyanarayanan.kuppuswamy
2020-03-17 14:43 ` Christoph Hellwig
2020-03-04 2:36 ` [PATCH v17 11/12] PCI/DPC: Add Error Disconnect Recover (EDR) support sathyanarayanan.kuppuswamy
2020-03-06 3:47 ` Bjorn Helgaas
2020-03-06 6:32 ` Kuppuswamy, Sathyanarayanan
2020-03-06 21:00 ` Bjorn Helgaas
2020-03-06 22:42 ` Kuppuswamy Sathyanarayanan
2020-03-06 23:23 ` Bjorn Helgaas
2020-03-07 0:19 ` Kuppuswamy Sathyanarayanan
2020-03-04 2:36 ` [PATCH v17 12/12] PCI/ACPI: Enable EDR support sathyanarayanan.kuppuswamy
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