1 files changed, 369 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/irdma/main.c b/drivers/infiniband/hw/irdma/main.c
new file mode 100644
index 000000000000..514453777e07
--- /dev/null
+++ b/drivers/infiniband/hw/irdma/main.c
@@ -0,0 +1,369 @@
+// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
+/* Copyright (c) 2015 - 2021 Intel Corporation */
+#include "main.h"
+#include "../../../net/ethernet/intel/ice/ice.h"
+
+MODULE_ALIAS("i40iw");
+MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
+MODULE_DESCRIPTION("Intel(R) Ethernet Protocol Driver for RDMA");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static struct notifier_block irdma_inetaddr_notifier = {
+	.notifier_call = irdma_inetaddr_event
+};
+
+static struct notifier_block irdma_inetaddr6_notifier = {
+	.notifier_call = irdma_inet6addr_event
+};
+
+static struct notifier_block irdma_net_notifier = {
+	.notifier_call = irdma_net_event
+};
+
+static struct notifier_block irdma_netdevice_notifier = {
+	.notifier_call = irdma_netdevice_event
+};
+
+static void irdma_register_notifiers(void)
+{
+	register_inetaddr_notifier(&irdma_inetaddr_notifier);
+	register_inet6addr_notifier(&irdma_inetaddr6_notifier);
+	register_netevent_notifier(&irdma_net_notifier);
+	register_netdevice_notifier(&irdma_netdevice_notifier);
+}
+
+static void irdma_unregister_notifiers(void)
+{
+	unregister_netevent_notifier(&irdma_net_notifier);
+	unregister_inetaddr_notifier(&irdma_inetaddr_notifier);
+	unregister_inet6addr_notifier(&irdma_inetaddr6_notifier);
+	unregister_netdevice_notifier(&irdma_netdevice_notifier);
+}
+
+static void irdma_prep_tc_change(struct irdma_device *iwdev)
+{
+	iwdev->vsi.tc_change_pending = true;
+	irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_SUSPEND);
+
+	/* Wait for all qp's to suspend */
+	wait_event_timeout(iwdev->suspend_wq,
+			   !atomic_read(&iwdev->vsi.qp_suspend_reqs),
+			   IRDMA_EVENT_TIMEOUT);
+	irdma_ws_reset(&iwdev->vsi);
+}
+
+static void irdma_log_invalid_mtu(u16 mtu, struct irdma_sc_dev *dev)
+{
+	if (mtu < IRDMA_MIN_MTU_IPV4)
+		ibdev_warn(to_ibdev(dev), "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 576 for IPv4\n", mtu);
+	else if (mtu < IRDMA_MIN_MTU_IPV6)
+		ibdev_warn(to_ibdev(dev), "MTU setting [%d] too low for RDMA traffic. Minimum MTU is 1280 for IPv6\\n", mtu);
+}
+
+static void irdma_fill_qos_info(struct irdma_l2params *l2params,
+				struct iidc_qos_params *qos_info)
+{
+	int i;
+
+	l2params->num_tc = qos_info->num_tc;
+	l2params->vsi_prio_type = qos_info->vport_priority_type;
+	l2params->vsi_rel_bw = qos_info->vport_relative_bw;
+	for (i = 0; i < l2params->num_tc; i++) {
+		l2params->tc_info[i].egress_virt_up =
+			qos_info->tc_info[i].egress_virt_up;
+		l2params->tc_info[i].ingress_virt_up =
+			qos_info->tc_info[i].ingress_virt_up;
+		l2params->tc_info[i].prio_type = qos_info->tc_info[i].prio_type;
+		l2params->tc_info[i].rel_bw = qos_info->tc_info[i].rel_bw;
+		l2params->tc_info[i].tc_ctx = qos_info->tc_info[i].tc_ctx;
+	}
+	for (i = 0; i < IIDC_MAX_USER_PRIORITY; i++)
+		l2params->up2tc[i] = qos_info->up2tc[i];
+	if (qos_info->pfc_mode == IIDC_DSCP_PFC_MODE) {
+		l2params->dscp_mode = true;
+		memcpy(l2params->dscp_map, qos_info->dscp_map, sizeof(l2params->dscp_map));
+	}
+}
+
+static void irdma_iidc_event_handler(struct ice_pf *pf, struct iidc_event *event)
+{
+	struct irdma_device *iwdev = dev_get_drvdata(&pf->adev->dev);
+	struct irdma_l2params l2params = {};
+
+	if (*event->type & BIT(IIDC_EVENT_AFTER_MTU_CHANGE)) {
+		ibdev_dbg(&iwdev->ibdev, "CLNT: new MTU = %d\n", iwdev->netdev->mtu);
+		if (iwdev->vsi.mtu != iwdev->netdev->mtu) {
+			l2params.mtu = iwdev->netdev->mtu;
+			l2params.mtu_changed = true;
+			irdma_log_invalid_mtu(l2params.mtu, &iwdev->rf->sc_dev);
+			irdma_change_l2params(&iwdev->vsi, &l2params);
+		}
+	} else if (*event->type & BIT(IIDC_EVENT_BEFORE_TC_CHANGE)) {
+		if (iwdev->vsi.tc_change_pending)
+			return;
+
+		irdma_prep_tc_change(iwdev);
+	} else if (*event->type & BIT(IIDC_EVENT_AFTER_TC_CHANGE)) {
+		struct iidc_qos_params qos_info = {};
+
+		if (!iwdev->vsi.tc_change_pending)
+			return;
+
+		l2params.tc_changed = true;
+		ibdev_dbg(&iwdev->ibdev, "CLNT: TC Change\n");
+		ice_get_qos_params(pf, &qos_info);
+		irdma_fill_qos_info(&l2params, &qos_info);
+		if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
+			iwdev->dcb_vlan_mode = qos_info.num_tc > 1 && !l2params.dscp_mode;
+		irdma_change_l2params(&iwdev->vsi, &l2params);
+	} else if (*event->type & BIT(IIDC_EVENT_CRIT_ERR)) {
+		ibdev_warn(&iwdev->ibdev, "ICE OICR event notification: oicr = 0x%08x\n",
+			   event->reg);
+		if (event->reg & IRDMAPFINT_OICR_PE_CRITERR_M) {
+			u32 pe_criterr;
+
+			pe_criterr = readl(iwdev->rf->sc_dev.hw_regs[IRDMA_GLPE_CRITERR]);
+#define IRDMA_Q1_RESOURCE_ERR 0x0001024d
+			if (pe_criterr != IRDMA_Q1_RESOURCE_ERR) {
+				ibdev_err(&iwdev->ibdev, "critical PE Error, GLPE_CRITERR=0x%08x\n",
+					  pe_criterr);
+				iwdev->rf->reset = true;
+			} else {
+				ibdev_warn(&iwdev->ibdev, "Q1 Resource Check\n");
+			}
+		}
+		if (event->reg & IRDMAPFINT_OICR_HMC_ERR_M) {
+			ibdev_err(&iwdev->ibdev, "HMC Error\n");
+			iwdev->rf->reset = true;
+		}
+		if (event->reg & IRDMAPFINT_OICR_PE_PUSH_M) {
+			ibdev_err(&iwdev->ibdev, "PE Push Error\n");
+			iwdev->rf->reset = true;
+		}
+		if (iwdev->rf->reset)
+			iwdev->rf->gen_ops.request_reset(iwdev->rf);
+	}
+}
+
+/**
+ * irdma_request_reset - Request a reset
+ * @rf: RDMA PCI function
+ */
+static void irdma_request_reset(struct irdma_pci_f *rf)
+{
+	struct ice_pf *pf = rf->cdev;
+
+	ibdev_warn(&rf->iwdev->ibdev, "Requesting a reset\n");
+	ice_rdma_request_reset(pf, IIDC_PFR);
+}
+
+/**
+ * irdma_lan_register_qset - Register qset with LAN driver
+ * @vsi: vsi structure
+ * @tc_node: Traffic class node
+ */
+static int irdma_lan_register_qset(struct irdma_sc_vsi *vsi,
+				   struct irdma_ws_node *tc_node)
+{
+	struct irdma_device *iwdev = vsi->back_vsi;
+	struct ice_pf *pf = iwdev->rf->cdev;
+	struct iidc_rdma_qset_params qset = {};
+	int ret;
+
+	qset.qs_handle = tc_node->qs_handle;
+	qset.tc = tc_node->traffic_class;
+	qset.vport_id = vsi->vsi_idx;
+	ret = ice_add_rdma_qset(pf, &qset);
+	if (ret) {
+		ibdev_dbg(&iwdev->ibdev, "WS: LAN alloc_res for rdma qset failed.\n");
+		return ret;
+	}
+
+	tc_node->l2_sched_node_id = qset.teid;
+	vsi->qos[tc_node->user_pri].l2_sched_node_id = qset.teid;
+
+	return 0;
+}
+
+/**
+ * irdma_lan_unregister_qset - Unregister qset with LAN driver
+ * @vsi: vsi structure
+ * @tc_node: Traffic class node
+ */
+static void irdma_lan_unregister_qset(struct irdma_sc_vsi *vsi,
+				      struct irdma_ws_node *tc_node)
+{
+	struct irdma_device *iwdev = vsi->back_vsi;
+	struct ice_pf *pf = iwdev->rf->cdev;
+	struct iidc_rdma_qset_params qset = {};
+
+	qset.qs_handle = tc_node->qs_handle;
+	qset.tc = tc_node->traffic_class;
+	qset.vport_id = vsi->vsi_idx;
+	qset.teid = tc_node->l2_sched_node_id;
+
+	if (ice_del_rdma_qset(pf, &qset))
+		ibdev_dbg(&iwdev->ibdev, "WS: LAN free_res for rdma qset failed.\n");
+}
+
+static void irdma_remove(struct auxiliary_device *aux_dev)
+{
+	struct iidc_auxiliary_dev *iidc_adev = container_of(aux_dev,
+							    struct iidc_auxiliary_dev,
+							    adev);
+	struct ice_pf *pf = iidc_adev->pf;
+	struct irdma_device *iwdev = auxiliary_get_drvdata(aux_dev);
+
+	irdma_ib_unregister_device(iwdev);
+	ice_rdma_update_vsi_filter(pf, iwdev->vsi_num, false);
+
+	pr_debug("INIT: Gen2 PF[%d] device remove success\n", PCI_FUNC(pf->pdev->devfn));
+}
+
+static void irdma_fill_device_info(struct irdma_device *iwdev, struct ice_pf *pf,
+				   struct ice_vsi *vsi)
+{
+	struct irdma_pci_f *rf = iwdev->rf;
+
+	rf->cdev = pf;
+	rf->gen_ops.register_qset = irdma_lan_register_qset;
+	rf->gen_ops.unregister_qset = irdma_lan_unregister_qset;
+	rf->hw.hw_addr = pf->hw.hw_addr;
+	rf->pcidev = pf->pdev;
+	rf->msix_count =  pf->num_rdma_msix;
+	rf->pf_id = pf->hw.pf_id;
+	rf->msix_entries = &pf->msix_entries[pf->rdma_base_vector];
+	rf->default_vsi.vsi_idx = vsi->vsi_num;
+	rf->protocol_used = pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2 ?
+			    IRDMA_ROCE_PROTOCOL_ONLY : IRDMA_IWARP_PROTOCOL_ONLY;
+	rf->rdma_ver = IRDMA_GEN_2;
+	rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT;
+	rf->rst_to = IRDMA_RST_TIMEOUT_HZ;
+	rf->gen_ops.request_reset = irdma_request_reset;
+	rf->limits_sel = 7;
+	rf->iwdev = iwdev;
+	mutex_init(&iwdev->ah_tbl_lock);
+	iwdev->netdev = vsi->netdev;
+	iwdev->vsi_num = vsi->vsi_num;
+	iwdev->init_state = INITIAL_STATE;
+	iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT;
+	iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT;
+	iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED;
+	iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
+	if (rf->protocol_used == IRDMA_ROCE_PROTOCOL_ONLY)
+		iwdev->roce_mode = true;
+}
+
+static int irdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
+{
+	struct iidc_auxiliary_dev *iidc_adev = container_of(aux_dev,
+							    struct iidc_auxiliary_dev,
+							    adev);
+	struct ice_pf *pf = iidc_adev->pf;
+	struct ice_vsi *vsi = ice_get_main_vsi(pf);
+	struct iidc_qos_params qos_info = {};
+	struct irdma_device *iwdev;
+	struct irdma_pci_f *rf;
+	struct irdma_l2params l2params = {};
+	int err;
+
+	if (!vsi)
+		return -EIO;
+	iwdev = ib_alloc_device(irdma_device, ibdev);
+	if (!iwdev)
+		return -ENOMEM;
+	iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL);
+	if (!iwdev->rf) {
+		ib_dealloc_device(&iwdev->ibdev);
+		return -ENOMEM;
+	}
+
+	irdma_fill_device_info(iwdev, pf, vsi);
+	rf = iwdev->rf;
+
+	err = irdma_ctrl_init_hw(rf);
+	if (err)
+		goto err_ctrl_init;
+
+	l2params.mtu = iwdev->netdev->mtu;
+	ice_get_qos_params(pf, &qos_info);
+	irdma_fill_qos_info(&l2params, &qos_info);
+	if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
+		iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode;
+
+	err = irdma_rt_init_hw(iwdev, &l2params);
+	if (err)
+		goto err_rt_init;
+
+	err = irdma_ib_register_device(iwdev);
+	if (err)
+		goto err_ibreg;
+
+	ice_rdma_update_vsi_filter(pf, iwdev->vsi_num, true);
+
+	ibdev_dbg(&iwdev->ibdev, "INIT: Gen2 PF[%d] device probe success\n", PCI_FUNC(rf->pcidev->devfn));
+	auxiliary_set_drvdata(aux_dev, iwdev);
+
+	return 0;
+
+err_ibreg:
+	irdma_rt_deinit_hw(iwdev);
+err_rt_init:
+	irdma_ctrl_deinit_hw(rf);
+err_ctrl_init:
+	kfree(iwdev->rf);
+	ib_dealloc_device(&iwdev->ibdev);
+
+	return err;
+}
+
+static const struct auxiliary_device_id irdma_auxiliary_id_table[] = {
+	{.name = "ice.iwarp", },
+	{.name = "ice.roce", },
+	{},
+};
+
+MODULE_DEVICE_TABLE(auxiliary, irdma_auxiliary_id_table);
+
+static struct iidc_auxiliary_drv irdma_auxiliary_drv = {
+	.adrv = {
+	    .id_table = irdma_auxiliary_id_table,
+	    .probe = irdma_probe,
+	    .remove = irdma_remove,
+	},
+	.event_handler = irdma_iidc_event_handler,
+};
+
+static int __init irdma_init_module(void)
+{
+	int ret;
+
+	ret = auxiliary_driver_register(&i40iw_auxiliary_drv);
+	if (ret) {
+		pr_err("Failed i40iw(gen_1) auxiliary_driver_register() ret=%d\n",
+		       ret);
+		return ret;
+	}
+
+	ret = auxiliary_driver_register(&irdma_auxiliary_drv.adrv);
+	if (ret) {
+		auxiliary_driver_unregister(&i40iw_auxiliary_drv);
+		pr_err("Failed irdma auxiliary_driver_register() ret=%d\n",
+		       ret);
+		return ret;
+	}
+
+	irdma_register_notifiers();
+
+	return 0;
+}
+
+static void __exit irdma_exit_module(void)
+{
+	irdma_unregister_notifiers();
+	auxiliary_driver_unregister(&irdma_auxiliary_drv.adrv);
+	auxiliary_driver_unregister(&i40iw_auxiliary_drv);
+}
+
+module_init(irdma_init_module);
+module_exit(irdma_exit_module);