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authorTejun Heo <htejun@gmail.com>2007-08-06 18:36:23 +0900
committerJeff Garzik <jeff@garzik.org>2007-10-12 14:55:31 -0400
commit8989805d6d176aa32c0e9a68a536aa4c8ef5231c (patch)
tree9111bf6a881ab6c90aac9953b678ab62bb6c2d3b /drivers/ata
parentdbd826168d6267a26cf20cd233f6730f8d8047d6 (diff)
libata-link: add PMP links
Add link->pmp, ap->nr_pmp_links, ap->pmp_link[], and implement/update link helpers. printk helpers are updated such that port and link are identifed as 'ataP:' if no PMP is attached, while device is identified as 'ataP.DD:'. If PMP is attached, they become 'ataP:', 'ataP.LL:' and 'ataP.LL' - ie. link and device are identified their PMP number. If PPM is attached (ap->nr_pmp_links != 0), ata_for_each_link() iterates over PMP links, while __ata_for_each_link() iterates over the host link + PMP links. If PMP is not attached (ap->nr_pmp_links == 0), both iterate over only the host link. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index dcae590cc9b..af9c0ab600d 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6064,13 +6064,14 @@ void ata_dev_init(struct ata_device *dev)
* ata_link_init - Initialize an ata_link structure
* @ap: ATA port link is attached to
* @link: Link structure to initialize
+ * @pmp: Port multiplier port number
*
* Initialize @link.
*
* LOCKING:
* Kernel thread context (may sleep)
*/
-static void ata_link_init(struct ata_port *ap, struct ata_link *link)
+static void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp)
{
int i;
@@ -6078,6 +6079,7 @@ static void ata_link_init(struct ata_port *ap, struct ata_link *link)
memset(link, 0, offsetof(struct ata_link, device[0]));
link->ap = ap;
+ link->pmp = pmp;
link->active_tag = ATA_TAG_POISON;
link->hw_sata_spd_limit = UINT_MAX;
@@ -6173,7 +6175,7 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
ap->cbl = ATA_CBL_NONE;
- ata_link_init(ap, &ap->link);
+ ata_link_init(ap, &ap->link, 0);
#ifdef ATA_IRQ_TRAP
ap->stats.unhandled_irq = 1;