linux-kernel - Re: [PATCH RESEND] Calgary: increase max PHB number

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Message-ID: <20100618094005.GC23977@elte.hu>
Date:	Fri, 18 Jun 2010 11:40:05 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Corinna Schultz <cschultz@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, coschult@...ibm.com,
	akpm@...ux-foundation.org, djwong <djwong@...ux.vnet.ibm.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Joerg Roedel <joerg.roedel@....com>
Subject: Re: [PATCH RESEND] Calgary: increase max PHB number


* Corinna Schultz <cschultz@...ux.vnet.ibm.com> wrote:

> Newer systems (x3950M2) can have 48 PHBs per chassis and 8 chassis,
> so bump the
> limits up and provide an explanation of the requirements for each class.
> 
> Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
> Acked-by: Muli Ben-Yehuda <muli@...ibm.com>
> ---
> 
>  arch/x86/kernel/pci-calgary_64.c |   13 +++++++++----
>  1 files changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/x86/kernel/pci-calgary_64.c
> b/arch/x86/kernel/pci-calgary_64.c
> index e6ec8a2..4b7eb90 100644
> --- a/arch/x86/kernel/pci-calgary_64.c
> +++ b/arch/x86/kernel/pci-calgary_64.c
> @@ -102,10 +102,15 @@ int use_calgary __read_mostly = 0;
>  #define PMR_SOFTSTOPFAULT		 0x40000000
>  #define PMR_HARDSTOP		 		 0x20000000
> 
> -#define MAX_NUM_OF_PHBS		 		 8 /* how many PHBs in total? */
> -#define MAX_NUM_CHASSIS		 		 8 /* max number of chassis */
> -/* MAX_PHB_BUS_NUM is the maximal possible dev->bus->number */
> -#define MAX_PHB_BUS_NUM		 		 (MAX_NUM_OF_PHBS * MAX_NUM_CHASSIS * 2)
> +/*
> + * The maximum PHB bus number.
> + * x3950M2 (rare): 8 chassis, 48 PHBs per chassis = 384
> + * x3950M2: 4 chassis, 48 PHBs per chassis        = 192
> + * x3950 (PCIE): 8 chassis, 32 PHBs per chassis   = 256
> + * x3950 (PCIX): 8 chassis, 16 PHBs per chassis   = 128
> + */
> +#define MAX_PHB_BUS_NUM		 		 384
> +

Which tree is this against? Doesnt apply to .35-rc3:

 Hunk #1 FAILED at 102.
 1 out of 1 hunk FAILED -- rejects in file arch/x86/kernel/pci-calgary_64.c

Thanks,

	Ingo
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