From: Govinda Tatti <Govinda.Tatti@Oracle.COM>
To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, bhelgaas@google.com,
boris.ostrovsky@Oracle.COM, jgross@suse.com, JBeulich@suse.com,
roger.pau@citrix.com
Cc: konrad.wilk@Oracle.COM
Subject: [PATCH V3 1/2] Drivers/PCI: Export pcie_has_flr() interface
Date: Thu, 7 Dec 2017 17:21:44 -0500 [thread overview]
Message-ID: <20171207222145.9769-2-Govinda.Tatti@Oracle.COM> (raw)
In-Reply-To: <20171207222145.9769-1-Govinda.Tatti@Oracle.COM>
This patch exports pcie_has_flr() and it is being used by Xen pciback
driver to reset (flr/slot/bus) PCI devices based on 'reset' SysFS
attribute.
Signed-off-by: Govinda Tatti <Govinda.Tatti@Oracle.COM>
---
v3: -New
drivers/pci/pci.c | 3 ++-
include/linux/pci.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 6078dfc..499e922 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3872,7 +3872,7 @@ static void pci_flr_wait(struct pci_dev *dev)
* Returns true if the device advertises support for PCIe function level
* resets.
*/
-static bool pcie_has_flr(struct pci_dev *dev)
+bool pcie_has_flr(struct pci_dev *dev)
{
u32 cap;
@@ -3882,6 +3882,7 @@ static bool pcie_has_flr(struct pci_dev *dev)
pcie_capability_read_dword(dev, PCI_EXP_DEVCAP, &cap);
return cap & PCI_EXP_DEVCAP_FLR;
}
+EXPORT_SYMBOL_GPL(pcie_has_flr);
/**
* pcie_flr - initiate a PCIe function level reset
diff --git a/include/linux/pci.h b/include/linux/pci.h
index d16a7c0..44bf2b5 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1089,6 +1089,7 @@ int pcie_get_mps(struct pci_dev *dev);
int pcie_set_mps(struct pci_dev *dev, int mps);
int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed,
enum pcie_link_width *width);
+bool pcie_has_flr(struct pci_dev *dev);
void pcie_flr(struct pci_dev *dev);
int __pci_reset_function(struct pci_dev *dev);
int __pci_reset_function_locked(struct pci_dev *dev);
--
2.9.5
next prev parent reply other threads:[~2017-12-07 22:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-07 22:21 [PATCH V3 0/2] Xen/PCIback: PCI reset using 'reset' SysFS attribute Govinda Tatti
2017-12-07 22:21 ` Govinda Tatti [this message]
2017-12-08 20:24 ` [PATCH V3 1/2] Drivers/PCI: Export pcie_has_flr() interface Bjorn Helgaas
2017-12-12 0:29 ` Govinda Tatti
2017-12-12 0:59 ` Bjorn Helgaas
2017-12-13 20:46 ` [Xen-devel] " Govinda Tatti
2017-12-13 21:24 ` Bjorn Helgaas
2017-12-14 12:52 ` Christoph Hellwig
2017-12-15 0:24 ` Bjorn Helgaas
2017-12-15 15:48 ` Govinda Tatti
2017-12-15 18:18 ` Bjorn Helgaas
2017-12-15 20:01 ` Govinda Tatti
2017-12-18 3:09 ` Alexey Kardashevskiy
2017-12-18 12:26 ` Christoph Hellwig
2017-12-18 17:22 ` Govinda Tatti
2018-09-09 18:59 ` Pasi Kärkkäinen
2018-09-10 2:33 ` Sinan Kaya
2018-09-10 9:52 ` Pasi Kärkkäinen
2018-09-10 17:04 ` Sinan Kaya
2017-12-12 15:07 ` Christoph Hellwig
2017-12-07 22:21 ` [PATCH V3 2/2] Xen/PCIback: Implement PCI flr/slot/bus reset with 'reset' SysFS attribute Govinda Tatti
2017-12-08 9:34 ` Jan Beulich
2017-12-12 15:01 ` Govinda Tatti
[not found] ` <8a3bc517-1255-4547-d244-5c400e44cc77@Oracle.COM>
2017-12-12 15:01 ` Jan Beulich
2017-12-12 15:14 ` [Xen-devel] " Govinda Tatti
2017-12-15 19:52 ` Govinda Tatti
2017-12-18 7:36 ` Jan Beulich
2017-12-18 17:32 ` Boris Ostrovsky
2018-09-16 11:43 ` [Xen-devel] " Pasi Kärkkäinen
2018-09-17 18:06 ` Boris Ostrovsky
2018-09-18 7:15 ` Pasi Kärkkäinen
2018-09-18 9:32 ` George Dunlap
2018-09-18 18:09 ` Boris Ostrovsky
2018-09-19 9:05 ` Roger Pau Monné
2018-10-03 15:51 ` Pasi Kärkkäinen
2018-10-08 14:32 ` Boris Ostrovsky
2019-08-26 21:05 ` Pasi Kärkkäinen
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