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| author | James Bottomley <James.Bottomley@steeleye.com> | 2006-07-02 20:10:18 +0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-07-09 18:06:24 +0400 |
| commit | c9fefeb26457b87f4a767faefcf77321bb90db52 (patch) | |
| tree | 4b961b944e3cd51581c832134eccc4f6d4c4eef7 /include/scsi/scsi_transport_sas.h | |
| parent | 24f6d2fd314f8580fcfd96391ce9689727d55572 (diff) | |
| download | linux-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.h | 4 |
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 *); |