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[V6,01/10] PCI/IOV: Rename and export virtfn_add/virtfn_remove

Message ID 1431999312-10517-2-git-send-email-weiyang@linux.vnet.ibm.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Wei Yang May 19, 2015, 1:35 a.m. UTC
During EEH recovery, hotplug is applied to the devices which don't
have drivers or their drivers don't support EEH. However, the hotplug,
which was implemented based on PCI bus, can't be applied to VF directly.

The patch renames virtn_{add,remove}() and exports them so that they
can be used in PCI hotplug during EEH recovery.

[gwshan: changelog]
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
---
 drivers/pci/iov.c   |   10 +++++-----
 include/linux/pci.h |    2 ++
 2 files changed, 7 insertions(+), 5 deletions(-)

Comments

Wei Yang May 19, 2015, 5:24 a.m. UTC | #1
Bjorn,

This patch set is dedicated for the VF EEH on Power. Most of them are in
powerpc arch, while this first one is PCI core related. Those following
patches are review and ack from Gavin, your ack to this one is important.

I'd appreciated it a lot if you have time to take a look at this one.

Thanks a lot.

On Tue, May 19, 2015 at 09:35:03AM +0800, Wei Yang wrote:
>During EEH recovery, hotplug is applied to the devices which don't
>have drivers or their drivers don't support EEH. However, the hotplug,
>which was implemented based on PCI bus, can't be applied to VF directly.
>
>The patch renames virtn_{add,remove}() and exports them so that they
>can be used in PCI hotplug during EEH recovery.
>
>[gwshan: changelog]
>Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
>Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
>---
> drivers/pci/iov.c   |   10 +++++-----
> include/linux/pci.h |    2 ++
> 2 files changed, 7 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
>index ee0ebff..cc941dd 100644
>--- a/drivers/pci/iov.c
>+++ b/drivers/pci/iov.c
>@@ -108,7 +108,7 @@ resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
> 	return dev->sriov->barsz[resno - PCI_IOV_RESOURCES];
> }
>
>-static int virtfn_add(struct pci_dev *dev, int id, int reset)
>+int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset)
> {
> 	int i;
> 	int rc = -ENOMEM;
>@@ -183,7 +183,7 @@ failed:
> 	return rc;
> }
>
>-static void virtfn_remove(struct pci_dev *dev, int id, int reset)
>+void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset)
> {
> 	char buf[VIRTFN_ID_LEN];
> 	struct pci_dev *virtfn;
>@@ -320,7 +320,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
> 	}
>
> 	for (i = 0; i < initial; i++) {
>-		rc = virtfn_add(dev, i, 0);
>+		rc = pci_iov_virtfn_add(dev, i, 0);
> 		if (rc)
> 			goto failed;
> 	}
>@@ -332,7 +332,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
>
> failed:
> 	for (j = 0; j < i; j++)
>-		virtfn_remove(dev, j, 0);
>+		pci_iov_virtfn_remove(dev, j, 0);
>
> 	iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
> 	pci_cfg_access_lock(dev);
>@@ -361,7 +361,7 @@ static void sriov_disable(struct pci_dev *dev)
> 		return;
>
> 	for (i = 0; i < iov->num_VFs; i++)
>-		virtfn_remove(dev, i, 0);
>+		pci_iov_virtfn_remove(dev, i, 0);
>
> 	pcibios_sriov_disable(dev);
>
>diff --git a/include/linux/pci.h b/include/linux/pci.h
>index 353db8d..94bacfa 100644
>--- a/include/linux/pci.h
>+++ b/include/linux/pci.h
>@@ -1679,6 +1679,8 @@ int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
>
> int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
> void pci_disable_sriov(struct pci_dev *dev);
>+int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset);
>+void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset);
> int pci_num_vf(struct pci_dev *dev);
> int pci_vfs_assigned(struct pci_dev *dev);
> int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
>-- 
>1.7.9.5
diff mbox

Patch

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index ee0ebff..cc941dd 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -108,7 +108,7 @@  resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
 	return dev->sriov->barsz[resno - PCI_IOV_RESOURCES];
 }
 
-static int virtfn_add(struct pci_dev *dev, int id, int reset)
+int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset)
 {
 	int i;
 	int rc = -ENOMEM;
@@ -183,7 +183,7 @@  failed:
 	return rc;
 }
 
-static void virtfn_remove(struct pci_dev *dev, int id, int reset)
+void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset)
 {
 	char buf[VIRTFN_ID_LEN];
 	struct pci_dev *virtfn;
@@ -320,7 +320,7 @@  static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
 	}
 
 	for (i = 0; i < initial; i++) {
-		rc = virtfn_add(dev, i, 0);
+		rc = pci_iov_virtfn_add(dev, i, 0);
 		if (rc)
 			goto failed;
 	}
@@ -332,7 +332,7 @@  static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
 
 failed:
 	for (j = 0; j < i; j++)
-		virtfn_remove(dev, j, 0);
+		pci_iov_virtfn_remove(dev, j, 0);
 
 	iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
 	pci_cfg_access_lock(dev);
@@ -361,7 +361,7 @@  static void sriov_disable(struct pci_dev *dev)
 		return;
 
 	for (i = 0; i < iov->num_VFs; i++)
-		virtfn_remove(dev, i, 0);
+		pci_iov_virtfn_remove(dev, i, 0);
 
 	pcibios_sriov_disable(dev);
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 353db8d..94bacfa 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1679,6 +1679,8 @@  int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
 
 int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
 void pci_disable_sriov(struct pci_dev *dev);
+int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset);
+void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset);
 int pci_num_vf(struct pci_dev *dev);
 int pci_vfs_assigned(struct pci_dev *dev);
 int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);