[PATCH 30/32] elx: efct: scsi_transport_fc host interface support

James Smart
2019-10-23T21:57:02Z

This patch continues the efct driver population.

This patch adds driver definitions for:
Integration with the scsi_fc_transport host interfaces

Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
---
drivers/scsi/elx/efct/efct_xport.c | 580 +++++++++++++++++++++++++++++++++++++
1 file changed, 580 insertions(+)

diff --git a/drivers/scsi/elx/efct/efct_xport.c b/drivers/scsi/elx/efct/efct_xport.c
index d43027c57732..c0f75c0dde9c 100644
--- a/drivers/scsi/elx/efct/efct_xport.c
+++ b/drivers/scsi/elx/efct/efct_xport.c
@@ -1146,3 +1146,583 @@ int efct_scsi_del_device(struct efct_s *efct)
}
return 0;
}
+
+/**
+ * @brief Copy the vport DID into the SCSI host port id.
+ *
+ * @param shost Kernel SCSI host pointer.
+ */
+static void
+efct_get_host_port_id(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ struct efc_lport *efc = efct->efcport;
+ struct efc_sli_port_s *sport;
+
+ if (efc->domain && efc->domain->sport) {
+ sport = efc->domain->sport;
+ fc_host_port_id(shost) = sport->fc_id;
+ }
+}
+
+/**
+ * @brief Set the value of the SCSI host port type.
+ *
+ * @param shost Kernel SCSI host pointer.
+ */
+static void
+efct_get_host_port_type(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ struct efc_lport *efc = efct->efcport;
+ struct efc_sli_port_s *sport;
+ int type = FC_PORTTYPE_UNKNOWN;
+
+ if (efc->domain && efc->domain->sport) {
+ if (efc->domain->is_loop) {
+ type = FC_PORTTYPE_LPORT;
+ } else {
+ sport = efc->domain->sport;
+ if (sport->is_vport)
+ type = FC_PORTTYPE_NPIV;
+ else if (sport->topology == EFC_SPORT_TOPOLOGY_P2P)
+ type = FC_PORTTYPE_PTP;
+ else if (sport->topology == EFC_SPORT_TOPOLOGY_UNKNOWN)
+ type = FC_PORTTYPE_UNKNOWN;
+ else
+ type = FC_PORTTYPE_NPORT;
+ }
+ }
+ fc_host_port_type(shost) = type;
+}
+
+static void
+efct_get_host_vport_type(struct Scsi_Host *shost)
+{
+ fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
+}
+
+/**
+ * @brief Set the value of the SCSI host port state
+ *
+ * @param shost Kernel SCSI host pointer.
+ */
+static void
+efct_get_host_port_state(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ struct efc_lport *efc = efct->efcport;
+
+ if (efc->domain)
+ fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
+ else
+ fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
+}
+
+/**
+ * @brief Set the value of the SCSI host speed.
+ *
+ * @param shost Kernel SCSI host pointer.
+ */
+static void
+efct_get_host_speed(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ struct efc_lport *efc = efct->efcport;
+ union efct_xport_stats_u speed;
+ u32 fc_speed = FC_PORTSPEED_UNKNOWN;
+ int rc;
+
+ if (efc->domain && efc->domain->sport) {
+ rc = efct_xport_status(efct->xport,
+ EFCT_XPORT_LINK_SPEED, &speed);
+ if (rc == 0) {
+ switch (speed.value) {
+ case 1000:
+ fc_speed = FC_PORTSPEED_1GBIT;
+ break;
+ case 2000:
+ fc_speed = FC_PORTSPEED_2GBIT;
+ break;
+ case 4000:
+ fc_speed = FC_PORTSPEED_4GBIT;
+ break;
+ case 8000:
+ fc_speed = FC_PORTSPEED_8GBIT;
+ break;
+ case 10000:
+ fc_speed = FC_PORTSPEED_10GBIT;
+ break;
+ case 16000:
+ fc_speed = FC_PORTSPEED_16GBIT;
+ break;
+ case 32000:
+ fc_speed = FC_PORTSPEED_32GBIT;
+ break;
+ }
+ }
+ }
+ fc_host_speed(shost) = fc_speed;
+}
+
+/**
+ * @brief Set the value of the SCSI host fabric name.
+ *
+ * @param shost Kernel SCSI host pointer.
+ */
+static void
+efct_get_host_fabric_name(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ struct efc_lport *efc = efct->efcport;
+
+ if (efc->domain) {
+ struct fc_els_flogi *sp =
+ (struct fc_els_flogi *)
+ efc->domain->flogi_service_params;
+
+ fc_host_fabric_name(shost) = be64_to_cpu(sp->fl_wwnn);
+ }
+}
+
+/**
+ * @brief Return statistical information about the adapter.
+ *
+ * @par Description
+ * Returns NULL on error for link down, no mbox pool, sli2 active,
+ * management not allowed, memory allocation error, or mbox error.
+ *
+ * @param shost Kernel SCSI host pointer.
+ *
+ * @return NULL for error address of the adapter host statistics.
+ */
+static struct fc_host_statistics *
+efct_get_stats(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ union efct_xport_stats_u stats;
+ struct efct_xport_s *xport = efct->xport;
+ u32 rc = 1;
+
+ rc = efct_xport_status(xport, EFCT_XPORT_LINK_STATISTICS, &stats);
+ if (rc != 0) {
+ pr_err("efct_xport_status returned non 0 - %d\n", rc);
+ return NULL;
+ }
+
+ vport->fc_host_stats.loss_of_sync_count =
+ stats.stats.link_stats.loss_of_sync_error_count;
+ vport->fc_host_stats.link_failure_count =
+ stats.stats.link_stats.link_failure_error_count;
+ vport->fc_host_stats.prim_seq_protocol_err_count =
+ stats.stats.link_stats.primitive_sequence_error_count;
+ vport->fc_host_stats.invalid_tx_word_count =
+ stats.stats.link_stats.invalid_transmission_word_error_count;
+ vport->fc_host_stats.invalid_crc_count =
+ stats.stats.link_stats.crc_error_count;
+ /* mbox returns kbyte count so we need to convert to words */
+ vport->fc_host_stats.tx_words =
+ stats.stats.host_stats.transmit_kbyte_count * 256;
+ /* mbox returns kbyte count so we need to convert to words */
+ vport->fc_host_stats.rx_words =
+ stats.stats.host_stats.receive_kbyte_count * 256;
+ vport->fc_host_stats.tx_frames =
+ stats.stats.host_stats.transmit_frame_count;
+ vport->fc_host_stats.rx_frames =
+ stats.stats.host_stats.receive_frame_count;
+
+ vport->fc_host_stats.fcp_input_requests =
+ xport->fcp_stats.input_requests;
+ vport->fc_host_stats.fcp_output_requests =
+ xport->fcp_stats.output_requests;
+ vport->fc_host_stats.fcp_output_megabytes =
+ xport->fcp_stats.output_bytes >> 20;
+ vport->fc_host_stats.fcp_input_megabytes =
+ xport->fcp_stats.input_bytes >> 20;
+ vport->fc_host_stats.fcp_control_requests =
+ xport->fcp_stats.control_requests;
+
+ return &vport->fc_host_stats;
+}
+
+/**
+ * @brief Copy the adapter link stats information.
+ *
+ * @param shost Kernel SCSI host pointer.
+ */
+static void
+efct_reset_stats(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport = (struct efct_vport_s *)shost->hostdata;
+ struct efct_s *efct = vport->efct;
+ /* argument has no purpose for this action */
+ union efct_xport_stats_u dummy;
+ u32 rc = 0;
+
+ rc = efct_xport_status(efct->xport, EFCT_XPORT_LINK_STAT_RESET, &dummy);
+ if (rc != 0)
+ pr_err("efct_xport_status returned non 0 - %d\n", rc);
+}
+
+/**
+ * @brief Set the target port id to the ndlp DID or -1.
+ *
+ * @param starget Kernel SCSI target pointer.
+ */
+static void
+efct_get_starget_port_id(struct scsi_target *starget)
+{
+ pr_err("%s\n", __func__);
+}
+
+/**
+ * @brief Set the target node name.
+ *
+ * @par Description
+ * Set the target node name to the ndlp node name wwn or zero.
+ *
+ * @param starget Kernel SCSI target pointer.
+ */
+static void
+efct_get_starget_node_name(struct scsi_target *starget)
+{
+ pr_err("%s\n", __func__);
+}
+
+/**
+ * @brief Set the target port name.
+ *
+ * @par Description
+ * Set the target port name to the ndlp port name wwn or zero.
+ *
+ * @param starget Kernel SCSI target pointer.
+ */
+static void
+efct_get_starget_port_name(struct scsi_target *starget)
+{
+ pr_err("%s\n", __func__);
+}
+
+/**
+ * @brief Set the vport's symbolic name.
+ *
+ * @par Description
+ * This function is called by the transport after the fc_vport's symbolic name
+ * has been changed. This function re-registers the symbolic name with the
+ * switch to propagate the change into the fabric, if the vport is active.
+ *
+ * @param fc_vport The fc_vport who's symbolic name has been changed.
+ */
+static void
+efct_set_vport_symbolic_name(struct fc_vport *fc_vport)
+{
+ pr_err("%s\n", __func__);
+}
+
+/**
+ * @brief Gracefully take the link down and reinitialize it
+ * (does not issue LIP).
+ *
+ * @par Description
+ * Bring the link down gracefully then re-init the link. The firmware will
+ * re-initialize the Fibre Channel interface as required.
+ * It does not issue a LIP.
+ *
+ * @param shost Scsi_Host pointer.
+ *
+ * @return
+ * - 0 - Success.
+ * - EPERM - Port is offline or management commands are being blocked.
+ * - ENOMEM - Unable to allocate memory for the mailbox command.
+ * - EIO - Error in sending the mailbox command.
+ */
+static int
+efct_issue_lip(struct Scsi_Host *shost)
+{
+ struct efct_vport_s *vport =
+ shost ? (struct efct_vport_s *)shost->hostdata : NULL;
+ struct efct_s *efct = vport ? vport->efct : NULL;
+
+ if (!shost || !vport || !efct) {
+ pr_err("%s: shost=%p vport=%p efct=%p\n", __func__,
+ shost, vport, efct);
+ return -EPERM;
+ }
+
+ if (efct_xport_control(efct->xport, EFCT_XPORT_PORT_OFFLINE))
+ efc_log_test(efct, "EFCT_XPORT_PORT_OFFLINE failed\n");
+
+ if (efct_xport_control(efct->xport, EFCT_XPORT_PORT_ONLINE))
+ efc_log_test(efct, "EFCT_XPORT_PORT_ONLINE failed\n");
+
+ return 0;
+}
+
+struct efct_vport_s *
+efct_scsi_new_vport(struct efct_s *efct, struct device *dev)
+{
+ struct Scsi_Host *shost = NULL;
+ int error = 0;
+ struct efct_vport_s *vport = NULL;
+ union efct_xport_stats_u speed;
+ u32 supported_speeds = 0;
+
+ shost = scsi_host_alloc(&efct_template, sizeof(*vport));
+ if (!shost) {
+ efc_log_err(efct, "failed to allocate Scsi_Host struct\n");
+ return NULL;
+ }
+
+ /* save efct information to shost LLD-specific space */
+ vport = (struct efct_vport_s *)shost->hostdata;
+ vport->efct = efct;
+ vport->is_vport = true;
+
+ shost->can_queue = efct_scsi_get_property(efct, EFCT_SCSI_MAX_IOS);
+ shost->max_cmd_len = 16; /* 16-byte CDBs */
+ shost->max_id = 0xffff;
+ shost->max_lun = 0xffffffff;
+
+ /* can only accept (from mid-layer) as many SGEs as we've pre-regited*/
+ shost->sg_tablesize = efct_scsi_get_property(efct, EFCT_SCSI_MAX_SGL);
+
+ /* attach FC Transport template to shost */
+ shost->transportt = efct_vport_fc_tt;
+ efc_log_debug(efct, "vport transport template=%p\n",
+ efct_vport_fc_tt);
+
+ /* get pci_dev structure and add host to SCSI ML */
+ error = scsi_add_host_with_dma(shost, dev, &efct->pcidev->dev);
+ if (error) {
+ efc_log_test(efct, "failed scsi_add_host_with_dma\n");
+ return NULL;
+ }
+
+ /* Set symbolic name for host port */
+ snprintf(fc_host_symbolic_name(shost),
+ sizeof(fc_host_symbolic_name(shost)),
+ "Emulex %s FV%s DV%s", efct->model,
+ efct->fw_version, efct->driver_version);
+
+ /* Set host port supported classes */
+ fc_host_supported_classes(shost) = FC_COS_CLASS3;
+
+ speed.value = 1000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_1GBIT;
+ }
+ speed.value = 2000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_2GBIT;
+ }
+ speed.value = 4000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_4GBIT;
+ }
+ speed.value = 8000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_8GBIT;
+ }
+ speed.value = 10000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_10GBIT;
+ }
+ speed.value = 16000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_16GBIT;
+ }
+ speed.value = 32000;
+ if (efct_xport_status(efct->xport, EFCT_XPORT_IS_SUPPORTED_LINK_SPEED,
+ &speed)) {
+ supported_speeds |= FC_PORTSPEED_32GBIT;
+ }
+
+ fc_host_supported_speeds(shost) = supported_speeds;
+ vport->shost = shost;
+
+ return vport;
+}
+
+int efct_scsi_del_vport(struct efct_s *efct, struct Scsi_Host *shost)
+{
+ if (shost) {
+ efc_log_debug(efct,
+ "Unregistering vport with Transport Layer\n");
+ efct_xport_remove_host(shost);
+ efc_log_debug(efct, "Unregistering vport with SCSI Midlayer\n");
+ scsi_remove_host(shost);
+ scsi_host_put(shost);
+ return 0;
+ }
+ return -1;
+}
+
+static int
+efct_vport_create(struct fc_vport *fc_vport, bool disable)
+{
+ struct Scsi_Host *shost = fc_vport ? fc_vport->shost : NULL;
+ struct efct_vport_s *pport = shost ?
+ (struct efct_vport_s *)shost->hostdata :
+ NULL;
+ struct efct_s *efct = pport ? pport->efct : NULL;
+ struct efct_vport_s *vport = NULL;
+
+ if (!fc_vport || !shost || !efct)
+ goto fail;
+
+ vport = efct_scsi_new_vport(efct, &fc_vport->dev);
+ if (!vport) {
+ efc_log_err(efct, "failed to create vport\n");
+ goto fail;
+ }
+
+ vport->fc_vport = fc_vport;
+ vport->npiv_wwpn = fc_vport->port_name;
+ vport->npiv_wwnn = fc_vport->node_name;
+ fc_host_node_name(vport->shost) = vport->npiv_wwnn;
+ fc_host_port_name(vport->shost) = vport->npiv_wwpn;
+ *(struct efct_vport_s **)fc_vport->dd_data = vport;
+
+ return 0;
+
+fail:
+ return -1;
+}
+
+static int
+efct_vport_delete(struct fc_vport *fc_vport)
+{
+ struct efct_vport_s *vport = *(struct efct_vport_s **)fc_vport->dd_data;
+ struct Scsi_Host *shost = vport ? vport->shost : NULL;
+ struct efct_s *efct = vport ? vport->efct : NULL;
+ int rc = -1;
+
+ rc = efct_scsi_del_vport(efct, shost);
+
+ if (rc)
+ pr_err("%s: vport delete failed\n", __func__);
+
+ return rc;
+}
+
+static int
+efct_vport_disable(struct fc_vport *fc_vport, bool disable)
+{
+ return 0;
+}
+
+static struct fc_function_template efct_xport_functions = {
+ .get_starget_node_name = efct_get_starget_node_name,
+ .get_starget_port_name = efct_get_starget_port_name,
+ .get_starget_port_id = efct_get_starget_port_id,
+
+ .get_host_port_id = efct_get_host_port_id,
+ .get_host_port_type = efct_get_host_port_type,
+ .get_host_port_state = efct_get_host_port_state,
+ .get_host_speed = efct_get_host_speed,
+ .get_host_fabric_name = efct_get_host_fabric_name,
+
+ .get_fc_host_stats = efct_get_stats,
+ .reset_fc_host_stats = efct_reset_stats,
+
+ .issue_fc_host_lip = efct_issue_lip,
+
+ .set_vport_symbolic_name = efct_set_vport_symbolic_name,
+ .vport_disable = efct_vport_disable,
+
+ /* allocation lengths for host-specific data */
+ .dd_fcrport_size = sizeof(struct efct_rport_data_s),
+ .dd_fcvport_size = 128, /* should be sizeof(...) */
+
+ /* remote port fixed attributes */
+ .show_rport_maxframe_size = 1,
+ .show_rport_supported_classes = 1,
+ .show_rport_dev_loss_tmo = 1,
+
+ /* target dynamic attributes */
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+
+ /* host fixed attributes */
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_supported_fc4s = 1,
+ .show_host_supported_speeds = 1,
+ .show_host_maxframe_size = 1,
+
+ /* host dynamic attributes */
+ .show_host_port_id = 1,
+ .show_host_port_type = 1,
+ .show_host_port_state = 1,
+ /* active_fc4s is shown but doesn't change (thus no get function) */
+ .show_host_active_fc4s = 1,
+ .show_host_speed = 1,
+ .show_host_fabric_name = 1,
+ .show_host_symbolic_name = 1,
+ .vport_create = efct_vport_create,
+ .vport_delete = efct_vport_delete,
+};
+
+static struct fc_function_template efct_vport_functions = {
+ .get_starget_node_name = efct_get_starget_node_name,
+ .get_starget_port_name = efct_get_starget_port_name,
+ .get_starget_port_id = efct_get_starget_port_id,
+
+ .get_host_port_id = efct_get_host_port_id,
+ .get_host_port_type = efct_get_host_vport_type,
+ .get_host_port_state = efct_get_host_port_state,
+ .get_host_speed = efct_get_host_speed,
+ .get_host_fabric_name = efct_get_host_fabric_name,
+
+ .get_fc_host_stats = efct_get_stats,
+ .reset_fc_host_stats = efct_reset_stats,
+
+ .issue_fc_host_lip = efct_issue_lip,
+ .set_vport_symbolic_name = efct_set_vport_symbolic_name,
+
+ /* allocation lengths for host-specific data */
+ .dd_fcrport_size = sizeof(struct efct_rport_data_s),
+ .dd_fcvport_size = 128, /* should be sizeof(...) */
+
+ /* remote port fixed attributes */
+ .show_rport_maxframe_size = 1,
+ .show_rport_supported_classes = 1,
+ .show_rport_dev_loss_tmo = 1,
+
+ /* target dynamic attributes */
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+
+ /* host fixed attributes */
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_supported_fc4s = 1,
+ .show_host_supported_speeds = 1,
+ .show_host_maxframe_size = 1,
+
+ /* host dynamic attributes */
+ .show_host_port_id = 1,
+ .show_host_port_type = 1,
+ .show_host_port_state = 1,
+ /* active_fc4s is shown but doesn't change (thus no get function) */
+ .show_host_active_fc4s = 1,
+ .show_host_speed = 1,
+ .show_host_fabric_name = 1,
+ .show_host_symbolic_name = 1,
+};
--
2.13.7