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author | Dave Jiang <dave.jiang@intel.com> | 2011-03-02 20:31:24 (GMT) |
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committer | Dan Williams <dan.j.williams@intel.com> | 2011-07-03 10:55:29 (GMT) |
commit | 4d07f7f367f2c2d5547684893e61a7a796c1547f (patch) | |
tree | ffcd0f706f0f4729bb84fd75f906578b66148948 /drivers/scsi/isci/phy.c | |
parent | c658b109d3a9444293700471a278a741a1e5033d (diff) | |
download | linux-fsl-qoriq-4d07f7f367f2c2d5547684893e61a7a796c1547f.tar.xz |
isci: Adding support for phy enable and disable
Adding support for PHY_FUNC_LINK_RESET and PHY_FUNC_DISABLE. This allow the
sysfs knob enable (both 0 and 1) and link_reset to work properly.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/scsi/isci/phy.c')
-rw-r--r-- | drivers/scsi/isci/phy.c | 59 |
1 files changed, 34 insertions, 25 deletions
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 1eefaae..decc0c0 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -58,6 +58,9 @@ #include "scic_port.h" #include "scic_config_parameters.h" +struct scic_sds_phy; +extern enum sci_status scic_sds_phy_start(struct scic_sds_phy *sci_phy); +extern enum sci_status scic_sds_phy_stop(struct scic_sds_phy *sci_phy); /** * isci_phy_init() - This function is called by the probe function to @@ -127,42 +130,48 @@ void isci_phy_init( * * status, zero indicates success. */ -int isci_phy_control( - struct asd_sas_phy *phy, - enum phy_func func, - void *buf) +int isci_phy_control(struct asd_sas_phy *sas_phy, + enum phy_func func, + void *buf) { - int ret = TMF_RESP_FUNC_COMPLETE; - struct isci_phy *isci_phy_ptr = (struct isci_phy *)phy->lldd_phy; - struct isci_port *isci_port_ptr = NULL; - - if (isci_phy_ptr != NULL) - isci_port_ptr = isci_phy_ptr->isci_port; - - if ((isci_phy_ptr == NULL) || (isci_port_ptr == NULL)) { - pr_err("%s: asd_sas_phy %p: lldd_phy %p or " - "isci_port %p == NULL!\n", - __func__, phy, isci_phy_ptr, isci_port_ptr); - return TMF_RESP_FUNC_FAILED; - } + int ret = 0; + struct isci_phy *iphy = sas_phy->lldd_phy; + struct isci_port *iport = iphy->isci_port; + struct isci_host *ihost = sas_phy->ha->lldd_ha; + unsigned long flags; - pr_debug("%s: phy %p; func %d; buf %p; isci phy %p, port %p\n", - __func__, phy, func, buf, isci_phy_ptr, isci_port_ptr); + dev_dbg(&ihost->pdev->dev, + "%s: phy %p; func %d; buf %p; isci phy %p, port %p\n", + __func__, sas_phy, func, buf, iphy, iport); switch (func) { - case PHY_FUNC_HARD_RESET: + case PHY_FUNC_DISABLE: + spin_lock_irqsave(&ihost->scic_lock, flags); + scic_sds_phy_stop(iphy->sci_phy_handle); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + break; + case PHY_FUNC_LINK_RESET: + spin_lock_irqsave(&ihost->scic_lock, flags); + scic_sds_phy_stop(iphy->sci_phy_handle); + scic_sds_phy_start(iphy->sci_phy_handle); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + break; + + case PHY_FUNC_HARD_RESET: + if (!iport) + return -ENODEV; /* Perform the port reset. */ - ret = isci_port_perform_hard_reset(isci_port_ptr, isci_phy_ptr); + ret = isci_port_perform_hard_reset(iport, iphy); break; - case PHY_FUNC_DISABLE: default: - pr_debug("%s: phy %p; func %d NOT IMPLEMENTED!\n", - __func__, phy, func); - ret = TMF_RESP_FUNC_FAILED; + dev_dbg(&ihost->pdev->dev, + "%s: phy %p; func %d NOT IMPLEMENTED!\n", + __func__, sas_phy, func); + ret = -ENOSYS; break; } return ret; |