Re: [PATCH V4 02/11] powerpc/pci_dn: cache vf_index in pci_dn
From: Gavin Shan <hidden>
Date: 2015-05-15 05:58:11
Also in:
linux-pci
On Fri, May 15, 2015 at 01:46:17PM +0800, Wei Yang wrote:
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 <redacted>
Acked-by: Gavin Shan <redacted> Thanks, Gavin
quoted hunk ↗ jump to hunk
--- 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..d78afe4 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h@@ -199,6 +199,7 @@ struct pci_dn {#ifdef CONFIG_PCI_IOV u16 vfs_expanded; /* number of VFs IOV BAR expanded */ u16 num_vfs; /* number of VFs enabled*/ + int vf_index; /* VF index in the PF */ int offset; /* PE# for the first VF PE */ #define M64_PER_IOV 4 int m64_per_iov;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