From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Sean V Kelley <sean.v.kelley@intel.com>
Cc: <bhelgaas@google.com>, <rjw@rjwysocki.net>, <ashok.raj@intel.com>,
<tony.luck@intel.com>,
<sathyanarayanan.kuppuswamy@linux.intel.com>,
<linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Subject: Re: [PATCH V2 8/9] PCI/PME: Add RCEC PME handling
Date: Wed, 5 Aug 2020 18:51:58 +0100 [thread overview]
Message-ID: <20200805185158.00001196@Huawei.com> (raw)
In-Reply-To: <20200804194052.193272-9-sean.v.kelley@intel.com>
On Tue, 4 Aug 2020 12:40:51 -0700
Sean V Kelley <sean.v.kelley@intel.com> wrote:
> The Root Complex Event Collectors(RCEC) appear as peers of Root Ports
> and also have the PME capability. So add RCEC support to the current PME
> service driver and attach the PME service driver to the RCEC device.
>
> Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
> Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
I'm not particularly familiar with the PME side of things, but from the
stand point of it does what I'd expect to see...
FWIW:
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
> drivers/pci/pcie/pme.c | 15 +++++++++++----
> 1 file changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
> index 6a32970bb731..87799166c96a 100644
> --- a/drivers/pci/pcie/pme.c
> +++ b/drivers/pci/pcie/pme.c
> @@ -310,7 +310,10 @@ static int pcie_pme_can_wakeup(struct pci_dev *dev, void *ign)
> static void pcie_pme_mark_devices(struct pci_dev *port)
> {
> pcie_pme_can_wakeup(port, NULL);
> - if (port->subordinate)
> +
> + if (pci_pcie_type(port) == PCI_EXP_TYPE_RC_EC)
> + pcie_walk_rcec(port, pcie_pme_can_wakeup, NULL);
> + else if (port->subordinate)
> pci_walk_bus(port->subordinate, pcie_pme_can_wakeup, NULL);
> }
>
> @@ -320,10 +323,15 @@ static void pcie_pme_mark_devices(struct pci_dev *port)
> */
> static int pcie_pme_probe(struct pcie_device *srv)
> {
> - struct pci_dev *port;
> + struct pci_dev *port = srv->port;
> struct pcie_pme_service_data *data;
> int ret;
>
> + /* Limit to Root Ports or Root Complex Event Collectors */
> + if ((pci_pcie_type(port) != PCI_EXP_TYPE_RC_EC) &&
> + (pci_pcie_type(port) != PCI_EXP_TYPE_ROOT_PORT))
> + return -ENODEV;
> +
> data = kzalloc(sizeof(*data), GFP_KERNEL);
> if (!data)
> return -ENOMEM;
> @@ -333,7 +341,6 @@ static int pcie_pme_probe(struct pcie_device *srv)
> data->srv = srv;
> set_service_data(srv, data);
>
> - port = srv->port;
> pcie_pme_interrupt_enable(port, false);
> pcie_clear_root_pme_status(port);
>
> @@ -445,7 +452,7 @@ static void pcie_pme_remove(struct pcie_device *srv)
>
> static struct pcie_port_service_driver pcie_pme_driver = {
> .name = "pcie_pme",
> - .port_type = PCI_EXP_TYPE_ROOT_PORT,
> + .port_type = PCIE_ANY_PORT,
> .service = PCIE_PORT_SERVICE_PME,
>
> .probe = pcie_pme_probe,
next prev parent reply other threads:[~2020-08-05 17:54 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-04 19:40 [PATCH V2 0/9] Add RCEC handling to PCI/AER Sean V Kelley
2020-08-04 19:40 ` [PATCH V2 1/9] pci_ids: Add class code and extended capability for RCEC Sean V Kelley
2020-08-05 3:01 ` Bjorn Helgaas
2020-08-04 19:40 ` [PATCH V2 2/9] PCI: Extend Root Port Driver to support RCEC Sean V Kelley
2020-08-05 17:43 ` Bjorn Helgaas
2020-08-05 18:14 ` Sean V Kelley
2020-08-05 17:45 ` Jonathan Cameron
2020-08-05 17:50 ` Sean V Kelley
2020-08-26 16:16 ` Kuppuswamy, Sathyanarayanan
2020-08-26 18:29 ` sean.v.kelley
2020-08-04 19:40 ` [PATCH V2 3/9] PCI/portdrv: Add pcie_walk_rcec() to walk RCiEPs associated with RCEC Sean V Kelley
2020-08-05 17:43 ` Bjorn Helgaas
2020-08-05 18:07 ` Sean V Kelley
2020-08-26 16:20 ` Kuppuswamy, Sathyanarayanan
2020-08-26 18:37 ` sean.v.kelley
2020-08-04 19:40 ` [PATCH V2 4/9] PCI/AER: Extend AER error handling to RCECs Sean V Kelley
2020-08-07 22:53 ` Bjorn Helgaas
2020-08-08 0:55 ` Sean V Kelley
2020-08-10 9:32 ` Jonathan Cameron
2020-08-17 22:24 ` Bjorn Helgaas
2020-08-18 9:01 ` Jonathan Cameron
2020-08-04 19:40 ` [PATCH V2 5/9] PCI/AER: Apply function level reset to RCiEP on fatal error Sean V Kelley
2020-08-04 19:40 ` [PATCH V2 6/9] PCI: Add 'rcec' field to pci_dev for associated RCiEPs Sean V Kelley
2020-08-05 17:40 ` Jonathan Cameron
2020-08-05 17:48 ` Sean V Kelley
2020-08-04 19:40 ` [PATCH V2 7/9] PCI/AER: Add RCEC AER handling Sean V Kelley
2020-08-05 17:49 ` Jonathan Cameron
2020-08-04 19:40 ` [PATCH V2 8/9] PCI/PME: Add RCEC PME handling Sean V Kelley
2020-08-05 17:51 ` Jonathan Cameron [this message]
2020-08-04 19:40 ` [PATCH V2 9/9] PCI/AER: Add RCEC AER error injection support Sean V Kelley
2020-08-05 17:54 ` Jonathan Cameron
2020-08-05 18:09 ` Sean V Kelley
2020-08-05 18:00 ` [PATCH V2 0/9] Add RCEC handling to PCI/AER Bjorn Helgaas
2020-08-05 18:12 ` Sean V Kelley
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