From: Wei Yang <weiyang@linux.vnet.ibm.com>
To: gwshan@linux.vnet.ibm.com, bhelgaas@google.com
Cc: linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org,
Wei Yang <weiyang@linux.vnet.ibm.com>
Subject: [PATCH V8 02/10] powerpc/pci: Cache VF index in pci_dn
Date: Thu, 18 Jun 2015 16:06:37 +0800 [thread overview]
Message-ID: <1434614805-19002-3-git-send-email-weiyang@linux.vnet.ibm.com> (raw)
In-Reply-To: <1434614805-19002-1-git-send-email-weiyang@linux.vnet.ibm.com>
The patch caches the VF index in pci_dn, which can be used to calculate
VF's bus, device and function number. Those information helps to locate
the VF's PCI device instance when doing hotplug during EEH recovery if
necessary.
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/pci-bridge.h | 1 +
arch/powerpc/kernel/pci_dn.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 1811c44..c324882 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -196,6 +196,7 @@ struct pci_dn {
#define IODA_INVALID_PE (-1)
#ifdef CONFIG_PPC_POWERNV
int pe_number;
+ int vf_index; /* VF index in the PF */
#ifdef CONFIG_PCI_IOV
u16 vfs_expanded; /* number of VFs IOV BAR expanded */
u16 num_vfs; /* number of VFs enabled*/
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index b3b4df9..f771130 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -139,6 +139,7 @@ struct pci_dn *pci_get_pdn(struct pci_dev *pdev)
#ifdef CONFIG_PCI_IOV
static struct pci_dn *add_one_dev_pci_data(struct pci_dn *parent,
struct pci_dev *pdev,
+ int vf_index,
int busno, int devfn)
{
struct pci_dn *pdn;
@@ -157,6 +158,7 @@ static struct pci_dn *add_one_dev_pci_data(struct pci_dn *parent,
pdn->parent = parent;
pdn->busno = busno;
pdn->devfn = devfn;
+ pdn->vf_index = vf_index;
#ifdef CONFIG_PPC_POWERNV
pdn->pe_number = IODA_INVALID_PE;
#endif
@@ -196,7 +198,7 @@ struct pci_dn *add_dev_pci_data(struct pci_dev *pdev)
return NULL;
for (i = 0; i < pci_sriov_get_totalvfs(pdev); i++) {
- pdn = add_one_dev_pci_data(parent, NULL,
+ pdn = add_one_dev_pci_data(parent, NULL, i,
pci_iov_virtfn_bus(pdev, i),
pci_iov_virtfn_devfn(pdev, i));
if (!pdn) {
--
1.7.9.5
next prev parent reply other threads:[~2015-06-18 8:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-18 8:06 [PATCH V8 00/10] VF EEH on Power8 Wei Yang
2015-06-18 8:06 ` [PATCH V8 01/10] PCI/IOV: Rename and export virtfn_add/virtfn_remove Wei Yang
2015-06-18 8:06 ` Wei Yang [this message]
2015-06-18 8:06 ` [PATCH V8 03/10] powerpc/pci: Remove VFs prior to PF Wei Yang
2015-06-18 8:06 ` [PATCH V8 04/10] powerpc/eeh: Cache only BARs, not windows or IOV BARs Wei Yang
2015-06-18 8:06 ` [PATCH V8 05/10] powerpc/powernv: EEH device for VF Wei Yang
2015-06-18 8:06 ` [PATCH V8 06/10] powerpc/eeh: Create PE for VFs Wei Yang
2015-07-16 16:00 ` Bjorn Helgaas
2015-06-18 8:06 ` [PATCH V8 07/10] powerpc/powernv: Support EEH reset for VF PE Wei Yang
2015-06-18 8:06 ` [PATCH V8 08/10] powerpc/powernv: Support PCI config restore for VFs Wei Yang
2015-06-18 8:06 ` [PATCH V8 09/10] powerpc/eeh: Support error recovery for VF PE Wei Yang
2015-06-18 8:06 ` [PATCH V8 10/10] powerpc/powernv: compound PE for VFs Wei Yang
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