Subject: Re: [PATCH v3 6/6] powerpc/powernv: allocate sparse PE# when using M64 BAR in Single PE mode

From: Gavin Shan <[email-masked]>
Date: Sun, 16 Aug 2015 09:28:22 +1000

On Sat, Aug 15, 2015 at 08:27:54PM +1000, Alexey Kardashevskiy wrote:
>On 08/14/2015 11:03 AM, Gavin Shan wrote:
>>On Thu, Aug 13, 2015 at 10:11:11PM +0800, Wei Yang wrote:
>>>When M64 BAR is set to Single PE mode, the PE# assigned to VF could be
>>>sparse.
>>>
>>>This patch restructures the patch to allocate sparse PE# for VFs when M64
>>>BAR is set to Single PE mode.
>>>
>>>Signed-off-by: Wei Yang <[email-masked]>
>>>---
>>>arch/powerpc/include/asm/pci-bridge.h     |    2 +-
>>>arch/powerpc/platforms/powernv/pci-ioda.c |   59 +++++++++++++++++++----------
>>>2 files changed, 41 insertions(+), 20 deletions(-)
>>>
>>>diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
>>>index 9d33ada..b026ef8 100644
>>>--- a/arch/powerpc/include/asm/pci-bridge.h
>>>+++ b/arch/powerpc/include/asm/pci-bridge.h
>>>@@ -214,7 +214,7 @@ struct pci_dn {
>>>#ifdef CONFIG_PCI_IOV
>>>	u16     vfs_expanded;		/* number of VFs IOV BAR expanded */
>>>	u16     num_vfs;		/* number of VFs enabled*/
>>>-	int     offset;			/* PE# for the first VF PE */
>>>+	int     pe_num_map[MAX_M64_BAR];/* PE# for the first VF PE or array */
>>
>>Same question as to "m64_map". pdn for non-PF doesn't need it.
>
>
>non-PF is VF, right?
>

3 types of devices: (A) PF (B) VF (C) All others. Here, I mean (C).

Thanks,
Gavin