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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-02-23 23:38:44 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-02-23 23:53:04 -0600
commita29c05153630b2cd5ea078c97c0abe084cd830d8 (patch)
tree99904c05815c0a5ec369ecaf15b2820801638223 /drivers/scsi/libsas
parent63edf49e67cac710826108697c4e8636c89abd17 (diff)
downloadlinux-a29c05153630b2cd5ea078c97c0abe084cd830d8.tar.bz2
[SCSI] libsas: use the supplied address for SATA devices rather than changing it
Once the phy reset is plumbed in properly, SATA error handling fails nastily because we change the port attached_sas_address using the WWN field of the IDENTIFY message. This is a nice thing to do in theory, but it really destroys hotplug because any event on the port causes an automatic mismatch between the sas_address the phy just picked up and the one we propagate into the port. However ugly they are, we have to stick with the sas addresses made up by the phys and expanders. Also does a few cosmetic changes to the way port printing is done to make it clearer how a port is formed. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/libsas')
-rw-r--r--drivers/scsi/libsas/sas_ata.c39
-rw-r--r--drivers/scsi/libsas/sas_port.c11
2 files changed, 8 insertions, 42 deletions
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 7cd05b599a12..b0e5ac372a32 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -236,12 +236,12 @@ static void sas_ata_phy_reset(struct ata_port *ap)
struct domain_device *dev = ap->private_data;
struct sas_internal *i =
to_sas_internal(dev->port->ha->core.shost->transportt);
- int res = 0;
+ int res = TMF_RESP_FUNC_FAILED;
if (i->dft->lldd_I_T_nexus_reset)
res = i->dft->lldd_I_T_nexus_reset(dev);
- if (res)
+ if (res != TMF_RESP_FUNC_COMPLETE)
SAS_DPRINTK("%s: Unable to reset I T nexus?\n", __FUNCTION__);
switch (dev->sata_dev.command_set) {
@@ -656,21 +656,6 @@ out:
return res;
}
-static void sas_sata_propagate_sas_addr(struct domain_device *dev)
-{
- unsigned long flags;
- struct asd_sas_port *port = dev->port;
- struct asd_sas_phy *phy;
-
- BUG_ON(dev->parent);
-
- memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
- spin_lock_irqsave(&port->phy_list_lock, flags);
- list_for_each_entry(phy, &port->phy_list, port_phy_el)
- memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
- spin_unlock_irqrestore(&port->phy_list_lock, flags);
-}
-
#define ATA_IDENTIFY_DEV 0xEC
#define ATA_IDENTIFY_PACKET_DEV 0xA1
#define ATA_SET_FEATURES 0xEF
@@ -728,26 +713,6 @@ static int sas_discover_sata_dev(struct domain_device *dev)
goto out_err;
}
cont1:
- /* Get WWN */
- if (dev->port->oob_mode != SATA_OOB_MODE) {
- memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
- SAS_ADDR_SIZE);
- } else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
- (le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
- == 0x5000) {
- int i;
-
- for (i = 0; i < 4; i++) {
- dev->sas_addr[2*i] =
- (le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0xFF00) >> 8;
- dev->sas_addr[2*i+1] =
- le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0x00FF;
- }
- }
- sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr);
- if (!dev->parent)
- sas_sata_propagate_sas_addr(dev);
-
/* XXX Hint: register this SATA device with SATL.
When this returns, dev->sata_dev->lu is alive and
present.
diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c
index e1e2d085c920..39ae68a3b0ef 100644
--- a/drivers/scsi/libsas/sas_port.c
+++ b/drivers/scsi/libsas/sas_port.c
@@ -92,9 +92,6 @@ static void sas_form_port(struct asd_sas_phy *phy)
if (!port->phy)
port->phy = phy->phy;
- SAS_DPRINTK("phy%d added to port%d, phy_mask:0x%x\n", phy->id,
- port->id, port->phy_mask);
-
if (*(u64 *)port->attached_sas_addr == 0) {
port->class = phy->class;
memcpy(port->attached_sas_addr, phy->attached_sas_addr,
@@ -115,6 +112,11 @@ static void sas_form_port(struct asd_sas_phy *phy)
}
sas_port_add_phy(port->port, phy->phy);
+ SAS_DPRINTK("%s added to %s, phy_mask:0x%x (%16llx)\n",
+ phy->phy->dev.bus_id,port->port->dev.bus_id,
+ port->phy_mask,
+ SAS_ADDR(port->attached_sas_addr));
+
if (port->port_dev)
port->port_dev->pathways = port->num_phys;
@@ -255,12 +257,11 @@ void sas_porte_hard_reset(struct work_struct *work)
static void sas_init_port(struct asd_sas_port *port,
struct sas_ha_struct *sas_ha, int i)
{
+ memset(port, 0, sizeof(*port));
port->id = i;
INIT_LIST_HEAD(&port->dev_list);
spin_lock_init(&port->phy_list_lock);
INIT_LIST_HEAD(&port->phy_list);
- port->num_phys = 0;
- port->phy_mask = 0;
port->ha = sas_ha;
spin_lock_init(&port->dev_list_lock);