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[SCSI] hpsa: eliminate 8 external target limitation

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Driver limits SAS external target IDs to range 1-8.
Need to increase limit and clean up overlapping concepts of targets and paths
in the code.

There are several defined constants that control this:
HPSA_MAX_TARGETS_PER_CTLR     16
MAX_MSA2XXX_ENCLOSURES        32
HPSA_MAX_PATHS                8

We can condense this to one constant:
MAX_EXT_TARGETS               32

SAS switches allow for 8 connections, and there is capacity for 4 switches per
enclosure in largest blade enclosure type.

Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Scott Teel
2012-01-19 14:01:19 -06:00
committed by James Bottomley
parent 1f310bde46
commit aca4a5200d
2 changed files with 10 additions and 11 deletions
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5
drivers/scsi/hpsa_cmd.h
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@@ -122,12 +122,11 @@ union u64bit {
};
/* FIXME this is a per controller value (barf!) */
#define HPSA_MAX_TARGETS_PER_CTLR 16
#define HPSA_MAX_LUN 1024
#define HPSA_MAX_PHYS_LUN 1024
#define MAX_MSA2XXX_ENCLOSURES 32
#define MAX_EXT_TARGETS 32
#define HPSA_MAX_DEVICES (HPSA_MAX_PHYS_LUN + HPSA_MAX_LUN + \
MAX_MSA2XXX_ENCLOSURES + 1) /* + 1 is for the controller itself */
MAX_EXT_TARGETS + 1) /* + 1 is for the controller itself */
/* SCSI-3 Commands */
#pragma pack(1)