This patch implements the pcibios_sriov_resource_alignment() on powernv
platform.
Signed-off-by: Wei Yang <weiy...@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/machdep.h | 1 +
arch/powerpc/kernel/pci-common.c | 8 ++++++++
arch/powerpc/platforms/powernv/pci-ioda.c | 17 +++++++++++++++++
3 files changed, 26 insertions(+)
diff --git a/arch/powerpc/include/asm/machdep.h
b/arch/powerpc/include/asm/machdep.h
index 2f2e770..3bbc55f 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -242,6 +242,7 @@ struct machdep_calls {
resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned
long type);
#ifdef CONFIG_PCI_IOV
resource_size_t (*__pci_sriov_resource_size)(struct pci_dev *, int
resno);
+ resource_size_t (*__pci_sriov_resource_alignment)(struct pci_dev *, int
resno, resource_size_t align);
#endif /* CONFIG_PCI_IOV */
/* Called to shutdown machine specific hardware not already controlled
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index c4e2e92..35345ac 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -128,6 +128,14 @@ resource_size_t pcibios_sriov_resource_size(struct pci_dev
*pdev, int resno)
return 0;
}
+
+resource_size_t pcibios_sriov_resource_alignment(struct pci_dev *pdev, int
resno, resource_size_t align)
+{
+ if (ppc_md.__pci_sriov_resource_alignment)
+ return ppc_md.__pci_sriov_resource_alignment(pdev, resno,
align);
+
+ return 0;
+}
#endif /* CONFIG_PCI_IOV */
static resource_size_t pcibios_io_size(const struct pci_controller *hose)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 7dfad6a..b0ac851 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1573,6 +1573,22 @@ static resource_size_t
__pnv_pci_sriov_resource_size(struct pci_dev *pdev, int r
return size;
}
+
+static resource_size_t __pnv_pci_sriov_resource_alignment(struct pci_dev
*pdev, int resno,
+ resource_size_t align)
+{
+ struct pci_dn *pdn = pci_get_pdn(pdev);
+ resource_size_t iov_align;
+
+ iov_align = resource_size(&pdev->resource[resno]);
+ if (iov_align)
+ return iov_align;
+
+ if (pdn->vfs)
+ return pdn->vfs * align;
+
+ return align;
+}
#endif /* CONFIG_PCI_IOV */
/* Prevent enabling devices for which we couldn't properly
@@ -1777,6 +1793,7 @@ void __init pnv_pci_init_ioda_phb(struct device_node *np,
ppc_md.pcibios_window_alignment = pnv_pci_window_alignment;
#ifdef CONFIG_PCI_IOV
ppc_md.__pci_sriov_resource_size = __pnv_pci_sriov_resource_size;
+ ppc_md.__pci_sriov_resource_alignment =
__pnv_pci_sriov_resource_alignment;
#endif /* CONFIG_PCI_IOV */
pci_add_flags(PCI_REASSIGN_ALL_RSRC);
--
1.7.9.5
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