scsi: mpt3sas: Set valid PhysicalPort in SMPPassThrough

The driver currently sets PhysicalPort field to 0xFF for SMPPassthrough
Request message. In zoning topologies this SMPPassthrough command always
operates on devices in one zone (default zone) even when user issues SMP
command for other zone drives.

Define _transport_get_port_id_by_rphy() and
_transport_get_port_id_by_sas_phy() helper functions to get Physical Port
number from sas_rphy & sas_phy respectively for SMPPassthrough request
message so that SMP Passthrough request message is sent to intended zone
device.

Link: https://lore.kernel.org/r/20201027130847.9962-10-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

3 files changed, 72 insertions, 6 deletions

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 047d234cc784..a8e42d1ba2e5 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -788,6 +788,7 @@ struct _sas_phy {
  * @phy: a list of phys that make up this sas_host/expander
  * @sas_port_list: list of ports attached to this sas_host/expander
  * @port: hba port entry containing node's port number info
+ * @rphy: sas_rphy object of this expander
  */
 struct _sas_node {
 	struct list_head list;
@@ -802,6 +803,7 @@ struct _sas_node {
 	struct hba_port *port;
 	struct	_sas_phy *phy;
 	struct list_head sas_port_list;
+	struct sas_rphy *rphy;
 };
 
 /**
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 289faef0058a..020687e5cc8f 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -6510,6 +6510,7 @@ _scsih_expander_add(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 		goto out_fail;
 	}
 	sas_expander->parent_dev = &mpt3sas_port->rphy->dev;
+	sas_expander->rphy = mpt3sas_port->rphy;
 
 	for (i = 0 ; i < sas_expander->num_phys ; i++) {
 		if ((mpt3sas_config_get_expander_pg1(ioc, &mpi_reply,
diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 3cc78c214ec4..d52d8b3161f2 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -61,6 +61,24 @@
 #include "mpt3sas_base.h"
 
 /**
+ * _transport_get_port_id_by_sas_phy - get zone's port id that Phy belong to
+ * @phy - sas_phy object
+ *
+ * Return Port number
+ */
+static inline u8
+_transport_get_port_id_by_sas_phy(struct sas_phy *phy)
+{
+	u8 port_id = 0xFF;
+	struct hba_port *port = phy->hostdata;
+
+	if (port)
+		port_id = port->port_id;
+
+	return port_id;
+}
+
+/**
  * _transport_sas_node_find_by_sas_address - sas node search
  * @ioc: per adapter object
  * @sas_address: sas address of expander or sas host
@@ -82,6 +100,49 @@ _transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc,
 }
 
 /**
+ * _transport_get_port_id_by_rphy - Get Port number from rphy object
+ * @ioc: per adapter object
+ * @rphy: sas_rphy object
+ *
+ * Returns Port number.
+ */
+static u8
+_transport_get_port_id_by_rphy(struct MPT3SAS_ADAPTER *ioc,
+	struct sas_rphy *rphy)
+{
+	struct _sas_node *sas_expander;
+	struct _sas_device *sas_device;
+	unsigned long flags;
+	u8 port_id = 0xFF;
+
+	if (!rphy)
+		return port_id;
+
+	if (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
+	    rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE) {
+		spin_lock_irqsave(&ioc->sas_node_lock, flags);
+		list_for_each_entry(sas_expander,
+		    &ioc->sas_expander_list, list) {
+			if (sas_expander->rphy == rphy) {
+				port_id = sas_expander->port->port_id;
+				break;
+			}
+		}
+		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+	} else if (rphy->identify.device_type == SAS_END_DEVICE) {
+		spin_lock_irqsave(&ioc->sas_device_lock, flags);
+		sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy);
+		if (sas_device) {
+			port_id = sas_device->port->port_id;
+			sas_device_put(sas_device);
+		}
+		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
+	}
+
+	return port_id;
+}
+
+/**
  * _transport_convert_phy_link_rate -
  * @link_rate: link rate returned from mpt firmware
  *
@@ -289,7 +350,7 @@ struct rep_manu_reply {
  */
 static int
 _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
-	u64 sas_address, struct sas_expander_device *edev)
+	u64 sas_address, struct sas_expander_device *edev, u8 port_id)
 {
 	Mpi2SmpPassthroughRequest_t *mpi_request;
 	Mpi2SmpPassthroughReply_t *mpi_reply;
@@ -356,7 +417,7 @@ _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
 
 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
-	mpi_request->PhysicalPort = 0xFF;
+	mpi_request->PhysicalPort = port_id;
 	mpi_request->SASAddress = cpu_to_le64(sas_address);
 	mpi_request->RequestDataLength = cpu_to_le16(data_out_sz);
 	psge = &mpi_request->SGL;
@@ -772,7 +833,7 @@ mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
 	    MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
 		_transport_expander_report_manufacture(ioc,
 		    mpt3sas_port->remote_identify.sas_address,
-		    rphy_to_expander_device(rphy));
+		    rphy_to_expander_device(rphy), hba_port->port_id);
 	return mpt3sas_port;
 
  out_fail:
@@ -923,6 +984,7 @@ mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
 	    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
 	    phy_pg0.ProgrammedLinkRate >> 4);
+	phy->hostdata = mpt3sas_phy->port;
 
 	if ((sas_phy_add(phy))) {
 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
@@ -993,6 +1055,7 @@ mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
 	    expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 	phy->maximum_linkrate = _transport_convert_phy_link_rate(
 	    expander_pg1.ProgrammedLinkRate >> 4);
+	phy->hostdata = mpt3sas_phy->port;
 
 	if ((sas_phy_add(phy))) {
 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
@@ -1197,7 +1260,7 @@ _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
 
 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
-	mpi_request->PhysicalPort = 0xFF;
+	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
 	mpi_request->VF_ID = 0; /* TODO */
 	mpi_request->VP_ID = 0;
 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
@@ -1493,7 +1556,7 @@ _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
 
 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
-	mpi_request->PhysicalPort = 0xFF;
+	mpi_request->PhysicalPort = _transport_get_port_id_by_sas_phy(phy);
 	mpi_request->VF_ID = 0; /* TODO */
 	mpi_request->VP_ID = 0;
 	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
@@ -1983,7 +2046,7 @@ _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
 
 	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
 	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
-	mpi_request->PhysicalPort = 0xFF;
+	mpi_request->PhysicalPort = _transport_get_port_id_by_rphy(ioc, rphy);
 	mpi_request->SASAddress = (rphy) ?
 	    cpu_to_le64(rphy->identify.sas_address) :
 	    cpu_to_le64(ioc->sas_hba.sas_address);