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rapidio: use stored ingress port number instead of register read

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The switch port information is obtained and stored during RIO device
setup.  Therefore repeated reads from Switch Port Information CAR may be
removed.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Micha Nelissen <micha@neli.hopto.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine 2010-10-27 15:34:29 -07:00 • committed by Linus Torvalds
parent 93e2cbd24e
commit ae05cbd5ad
3 changed files with 14 additions and 28 deletions
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4
include/linux/rio.h
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@ -112,7 +112,7 @@ struct rio_dev {
u16 asm_rev;
u16 efptr;
u32 pef;
u32 swpinfo; /* Only used for switches */
u32 swpinfo;
u32 src_ops;
u32 dst_ops;
u32 comp_tag;
@ -219,6 +219,7 @@ struct rio_net {
/**
* struct rio_switch - RIO switch info
* @node: Node in global list of switches
* @rdev: Associated RIO device structure
* @switchid: Switch ID that is unique across a network
* @hopcount: Hopcount to this switch
* @destid: Associated destid in the path
@ -234,6 +235,7 @@ struct rio_net {
*/
struct rio_switch {
struct list_head node;
struct rio_dev *rdev;
u16 switchid;
u16 hopcount;
u16 destid;