From 781a868f3136c6eb8e8c5c19d148416d7da86610 Mon Sep 17 00:00:00 2001 From: Wei Yang Date: Wed, 25 Mar 2015 16:23:57 +0800 Subject: powerpc/powernv: Shift VF resource with an offset On PowerNV platform, resource position in M64 BAR implies the PE# the resource belongs to. In some cases, adjustment of a resource is necessary to locate it to a correct position in M64 BAR . This patch adds pnv_pci_vf_resource_shift() to shift the 'real' PF IOV BAR address according to an offset. Note: After doing so, there would be a "hole" in the /proc/iomem when offset is a positive value. It looks like the device return some mmio back to the system, which actually no one could use it. [bhelgaas: rework loops, rework overlap check, index resource[] conventionally, remove pci_regs.h include, squashed with next patch] Signed-off-by: Wei Yang Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/pci-bridge.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/powerpc/include') diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index 7b8ebc5929ff..8716db48e946 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -180,6 +180,10 @@ struct pci_dn { int pe_number; #ifdef CONFIG_PCI_IOV u16 vfs_expanded; /* number of VFs IOV BAR expanded */ + u16 num_vfs; /* number of VFs enabled*/ + int offset; /* PE# for the first VF PE */ +#define IODA_INVALID_M64 (-1) + int m64_wins[PCI_SRIOV_NUM_BARS]; #endif /* CONFIG_PCI_IOV */ #endif struct list_head child_list; -- cgit v1.2.3