From: Jay Fang <f.fangjian@huawei.com>
To: Sean V Kelley <sean.v.kelley@intel.com>, <bhelgaas@google.com>,
<Jonathan.Cameron@huawei.com>, <rjw@rjwysocki.net>,
<ashok.raj@kernel.org>, <tony.luck@intel.com>,
<sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: <linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Subject: Re: [RFC PATCH 8/9] PCI/PME: Add RCEC PME handling
Date: Tue, 4 Aug 2020 16:35:59 +0800 [thread overview]
Message-ID: <edbcf3da-a1d5-e1b6-6a1a-a286429fc4e3@huawei.com> (raw)
In-Reply-To: <20200724172223.145608-9-sean.v.kelley@intel.com>
在 2020/7/25 1:22, Sean V Kelley 写道:
> 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>
> ---
> 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,
Maybe we can use port_type for driver matching. There is no need
to check the type of port in pcie_pme_probe function.
Jay
> .service = PCIE_PORT_SERVICE_PME,
>
> .probe = pcie_pme_probe,
>
next prev parent reply other threads:[~2020-08-04 8:35 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 17:22 [RFC PATCH 0/9] Add RCEC handling to PCI/AER Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 1/9] pci_ids: Add class code and extended capability for RCEC Sean V Kelley
2020-07-27 10:00 ` Jonathan Cameron
2020-07-27 10:21 ` Jonathan Cameron
2020-07-27 15:22 ` Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 2/9] PCI: Extend Root Port Driver to support RCEC Sean V Kelley
2020-07-27 12:30 ` Jonathan Cameron
2020-07-27 15:05 ` Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 3/9] PCI/portdrv: Add pcie_walk_rcec() to walk RCiEPs associated with RCEC Sean V Kelley
2020-07-27 10:49 ` Jonathan Cameron
2020-07-27 15:21 ` Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 4/9] PCI/AER: Extend AER error handling to RCECs Sean V Kelley
2020-07-27 11:00 ` Jonathan Cameron
2020-07-27 14:58 ` Sean V Kelley
2020-07-27 14:04 ` Jonathan Cameron
2020-07-27 15:00 ` Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 5/9] PCI/AER: Apply function level reset to RCiEP on fatal error Sean V Kelley
2020-07-27 11:17 ` Jonathan Cameron
2020-07-28 13:27 ` Zhuo, Qiuxu
2020-07-28 16:14 ` Sean V Kelley
2020-07-28 17:02 ` Jonathan Cameron
2020-07-28 17:42 ` Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 6/9] PCI: Add 'rcec' field to pci_dev for associated RCiEPs Sean V Kelley
2020-07-27 11:23 ` Jonathan Cameron
2020-07-27 15:39 ` Sean V Kelley
2020-07-27 16:11 ` Jonathan Cameron
2020-07-27 16:28 ` Sean V Kelley
2020-07-24 17:22 ` [RFC PATCH 7/9] PCI/AER: Add RCEC AER handling Sean V Kelley
2020-07-27 12:22 ` Jonathan Cameron
2020-07-27 15:19 ` Sean V Kelley
2020-07-27 17:14 ` Jonathan Cameron
2020-07-24 17:22 ` [RFC PATCH 8/9] PCI/PME: Add RCEC PME handling Sean V Kelley
2020-08-04 8:35 ` Jay Fang [this message]
2020-08-04 9:47 ` Jonathan Cameron
2020-07-24 17:22 ` [RFC PATCH 9/9] PCI/AER: Add RCEC AER error injection support Sean V Kelley
2020-07-27 12:37 ` [RFC PATCH 0/9] Add RCEC handling to PCI/AER Jonathan Cameron
2020-07-27 14:56 ` Sean V Kelley
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=edbcf3da-a1d5-e1b6-6a1a-a286429fc4e3@huawei.com \
--to=f.fangjian@huawei.com \
--cc=Jonathan.Cameron@huawei.com \
--cc=ashok.raj@kernel.org \
--cc=bhelgaas@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=qiuxu.zhuo@intel.com \
--cc=rjw@rjwysocki.net \
--cc=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=sean.v.kelley@intel.com \
--cc=tony.luck@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).