diff options
| author | Darrick J. Wong <djwong@us.ibm.com> | 2010-06-24 14:26:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-02 10:20:51 -0700 |
| commit | cb5985a25d6314c90f59169c42ab15f6136d3425 (patch) | |
| tree | b32cdc9b95df804e1aec29c14c6a248c4cb9728b /arch | |
| parent | 30d9fa8b70b38599667d545f49d1390cf84295c0 (diff) | |
x86, Calgary: Increase max PHB number
commit 499a00e92dd9a75395081f595e681629eb1eebad upstream.
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@us.ibm.com>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: Corinna Schultz <cschultz@linux.vnet.ibm.com>
LKML-Reference: <20100624212647.GI15515@tux1.beaverton.ibm.com>
[ v2: Fixed build bug, added back PHBS_PER_CALGARY == 4 ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/pci-calgary_64.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index e6ec8a2df1c..076f236f429 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -102,11 +102,16 @@ 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) -#define PHBS_PER_CALGARY 4 +/* + * 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 + +#define PHBS_PER_CALGARY 4 /* register offsets in Calgary's internal register space */ static const unsigned long tar_offsets[] = { |