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authorJames Bottomley <James.Bottomley@steeleye.com>2006-07-02 20:10:18 +0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-07-09 18:06:24 +0400
commitc9fefeb26457b87f4a767faefcf77321bb90db52 (patch)
tree4b961b944e3cd51581c832134eccc4f6d4c4eef7 /include/scsi/scsi_transport_sas.h
parent24f6d2fd314f8580fcfd96391ce9689727d55572 (diff)
downloadlinux-c9fefeb26457b87f4a767faefcf77321bb90db52.tar.xz
[SCSI] scsi_transport_sas: add unindexed ports
Some SAS HBAs don't want to go to the trouble of tracking port numbers, so they'd simply like to say "add this port and give it a number". This is especially beneficial from the hotplug point of view, since tracking ports and the available number space can be a real pain. The current implementation uses an incrementing number per expander to add the port on. However, since there can never be more ports than there are phys, a later implementation will try to be more intelligent about this. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi/scsi_transport_sas.h')
-rw-r--r--include/scsi/scsi_transport_sas.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
index e3c503cd175e..f5772ff61d0d 100644
--- a/include/scsi/scsi_transport_sas.h
+++ b/include/scsi/scsi_transport_sas.h
@@ -106,6 +106,7 @@ struct sas_end_device {
struct sas_expander_device {
int level;
+ int next_port_id;
#define SAS_EXPANDER_VENDOR_ID_LEN 8
char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
@@ -127,7 +128,7 @@ struct sas_expander_device {
struct sas_port {
struct device dev;
- u8 port_identifier;
+ int port_identifier;
int num_phys;
/* the other end of the link */
@@ -168,6 +169,7 @@ extern void sas_rphy_delete(struct sas_rphy *);
extern int scsi_is_sas_rphy(const struct device *);
struct sas_port *sas_port_alloc(struct device *, int);
+struct sas_port *sas_port_alloc_num(struct device *);
int sas_port_add(struct sas_port *);
void sas_port_free(struct sas_port *);
void sas_port_delete(struct sas_port *);