From: Kishon Vijay Abraham I <kishon@ti.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Rob Herring <robh+dt@kernel.org>,
Tom Joseph <tjoseph@cadence.com>,
Jingoo Han <jingoohan1@gmail.com>,
Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
Marek Vasut <marek.vasut+renesas@gmail.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Shawn Lin <shawn.lin@rock-chips.com>,
Heiko Stuebner <heiko@sntech.de>
Cc: Jonathan Corbet <corbet@lwn.net>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<linux-pci@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-renesas-soc@vger.kernel.org>,
<linux-rockchip@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
Kishon Vijay Abraham I <kishon@ti.com>,
Lokesh Vutla <lokeshvutla@ti.com>
Subject: [PATCH v6 3/7] PCI: endpoint: Add support to link a physical function to a virtual function
Date: Mon, 17 May 2021 13:17:19 +0530 [thread overview]
Message-ID: <20210517074723.10212-4-kishon@ti.com> (raw)
In-Reply-To: <20210517074723.10212-1-kishon@ti.com>
While the physical function has to be linked to endpoint controller, the
virtual function has to be linked to a physical function. Add support to
link a physical function to a virtual function in pci-ep-cfs.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/endpoint/pci-ep-cfs.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c
index f3a8b833b479..999911801877 100644
--- a/drivers/pci/endpoint/pci-ep-cfs.c
+++ b/drivers/pci/endpoint/pci-ep-cfs.c
@@ -475,6 +475,28 @@ static struct configfs_attribute *pci_epf_attrs[] = {
NULL,
};
+static int pci_epf_vepf_link(struct config_item *epf_pf_item,
+ struct config_item *epf_vf_item)
+{
+ struct pci_epf_group *epf_vf_group = to_pci_epf_group(epf_vf_item);
+ struct pci_epf_group *epf_pf_group = to_pci_epf_group(epf_pf_item);
+ struct pci_epf *epf_pf = epf_pf_group->epf;
+ struct pci_epf *epf_vf = epf_vf_group->epf;
+
+ return pci_epf_add_vepf(epf_pf, epf_vf);
+}
+
+static void pci_epf_vepf_unlink(struct config_item *epf_pf_item,
+ struct config_item *epf_vf_item)
+{
+ struct pci_epf_group *epf_vf_group = to_pci_epf_group(epf_vf_item);
+ struct pci_epf_group *epf_pf_group = to_pci_epf_group(epf_pf_item);
+ struct pci_epf *epf_pf = epf_pf_group->epf;
+ struct pci_epf *epf_vf = epf_vf_group->epf;
+
+ pci_epf_remove_vepf(epf_pf, epf_vf);
+}
+
static void pci_epf_release(struct config_item *item)
{
struct pci_epf_group *epf_group = to_pci_epf_group(item);
@@ -487,6 +509,8 @@ static void pci_epf_release(struct config_item *item)
}
static struct configfs_item_operations pci_epf_ops = {
+ .allow_link = pci_epf_vepf_link,
+ .drop_link = pci_epf_vepf_unlink,
.release = pci_epf_release,
};
--
2.17.1
next prev parent reply other threads:[~2021-05-17 7:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 7:47 [PATCH v6 0/7] Add SR-IOV support in PCIe Endpoint Core Kishon Vijay Abraham I
2021-05-17 7:47 ` [PATCH v6 1/7] dt-bindings: PCI: pci-ep: Add binding to specify virtual function Kishon Vijay Abraham I
2021-05-17 7:47 ` [PATCH v6 2/7] PCI: endpoint: Add support to add virtual function in endpoint core Kishon Vijay Abraham I
2021-05-17 7:47 ` Kishon Vijay Abraham I [this message]
2021-05-17 7:47 ` [PATCH v6 4/7] PCI: endpoint: Add virtual function number in pci_epc ops Kishon Vijay Abraham I
2021-05-17 7:47 ` [PATCH v6 5/7] PCI: cadence: Add support to configure virtual functions Kishon Vijay Abraham I
2021-05-17 7:47 ` [PATCH v6 6/7] misc: pci_endpoint_test: Populate sriov_configure ops to configure SR-IOV device Kishon Vijay Abraham I
2021-05-17 7:47 ` [PATCH v6 7/7] Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOV Kishon Vijay Abraham I
2021-05-26 12:34 ` [PATCH v6 0/7] Add SR-IOV support in PCIe Endpoint Core Kishon Vijay Abraham I
2021-06-16 14:05 ` Kishon Vijay Abraham I
2021-06-16 21:16 ` Bjorn Helgaas
2021-06-24 15:00 ` Kishon Vijay Abraham I
2021-06-25 16:15 ` Lorenzo Pieralisi
2021-06-28 4:09 ` Kishon Vijay Abraham I
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