hinic3: HW management interfaces

Initialize hardware management config of irq, aeq and ceq.
These will send hardware messages to driver.

Co-developed-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Zhu Yikai <zhuyikai1@h-partners.com>
Signed-off-by: Fan Gong <gongfan1@huawei.com>
Link: https://patch.msgid.link/91c2ec3178bd1f28b4f9c509fd49b86a289ff79e.1757653621.git.zhuyikai1@h-partners.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/huawei/hinic3/Makefile

@@ -14,6 +14,7 @@ hinic3-objs := hinic3_cmdq.o \
 	       hinic3_lld.o \
 	       hinic3_main.o \
 	       hinic3_mbox.o \
+	       hinic3_mgmt.o \
 	       hinic3_netdev_ops.o \
 	       hinic3_nic_cfg.o \
 	       hinic3_nic_io.o \

drivers/net/ethernet/huawei/hinic3/hinic3_hw_cfg.c

@@ -8,6 +8,108 @@
 #include "hinic3_hwif.h"
 #include "hinic3_mbox.h"
 
+static int hinic3_init_irq_info(struct hinic3_hwdev *hwdev)
+{
+	struct hinic3_cfg_mgmt_info *cfg_mgmt = hwdev->cfg_mgmt;
+	struct hinic3_hwif *hwif = hwdev->hwif;
+	u16 intr_num = hwif->attr.num_irqs;
+	struct hinic3_irq_info *irq_info;
+	u16 intr_needed;
+
+	intr_needed = hwif->attr.msix_flex_en ? (hwif->attr.num_aeqs +
+		      hwif->attr.num_ceqs + hwif->attr.num_sq) : intr_num;
+	if (intr_needed > intr_num) {
+		dev_warn(hwdev->dev, "Irq num cfg %d is less than the needed irq num %d msix_flex_en %d\n",
+			 intr_num, intr_needed, hwdev->hwif->attr.msix_flex_en);
+		intr_needed = intr_num;
+	}
+
+	irq_info = &cfg_mgmt->irq_info;
+	irq_info->irq = kcalloc(intr_num, sizeof(struct hinic3_irq),
+				GFP_KERNEL);
+	if (!irq_info->irq)
+		return -ENOMEM;
+
+	irq_info->num_irq_hw = intr_needed;
+	mutex_init(&irq_info->irq_mutex);
+
+	return 0;
+}
+
+static int hinic3_init_irq_alloc_info(struct hinic3_hwdev *hwdev)
+{
+	struct hinic3_cfg_mgmt_info *cfg_mgmt = hwdev->cfg_mgmt;
+	struct hinic3_irq *irq = cfg_mgmt->irq_info.irq;
+	u16 nreq = cfg_mgmt->irq_info.num_irq_hw;
+	struct pci_dev *pdev = hwdev->pdev;
+	int actual_irq;
+	u16 i;
+
+	actual_irq = pci_alloc_irq_vectors(pdev, 2, nreq, PCI_IRQ_MSIX);
+	if (actual_irq < 0) {
+		dev_err(hwdev->dev, "Alloc msix entries with threshold 2 failed. actual_irq: %d\n",
+			actual_irq);
+		return -ENOMEM;
+	}
+
+	nreq = actual_irq;
+	cfg_mgmt->irq_info.num_irq = nreq;
+
+	for (i = 0; i < nreq; ++i) {
+		irq[i].msix_entry_idx = i;
+		irq[i].irq_id = pci_irq_vector(pdev, i);
+		irq[i].allocated = false;
+	}
+
+	return 0;
+}
+
+int hinic3_init_cfg_mgmt(struct hinic3_hwdev *hwdev)
+{
+	struct hinic3_cfg_mgmt_info *cfg_mgmt;
+	int err;
+
+	cfg_mgmt = kzalloc(sizeof(*cfg_mgmt), GFP_KERNEL);
+	if (!cfg_mgmt)
+		return -ENOMEM;
+
+	hwdev->cfg_mgmt = cfg_mgmt;
+
+	err = hinic3_init_irq_info(hwdev);
+	if (err) {
+		dev_err(hwdev->dev, "Failed to init hinic3_irq_mgmt_info, err: %d\n",
+			err);
+		goto err_free_cfg_mgmt;
+	}
+
+	err = hinic3_init_irq_alloc_info(hwdev);
+	if (err) {
+		dev_err(hwdev->dev, "Failed to init hinic3_irq_info, err: %d\n",
+			err);
+		goto err_free_irq_info;
+	}
+
+	return 0;
+
+err_free_irq_info:
+	kfree(cfg_mgmt->irq_info.irq);
+	cfg_mgmt->irq_info.irq = NULL;
+err_free_cfg_mgmt:
+	kfree(cfg_mgmt);
+
+	return err;
+}
+
+void hinic3_free_cfg_mgmt(struct hinic3_hwdev *hwdev)
+{
+	struct hinic3_cfg_mgmt_info *cfg_mgmt = hwdev->cfg_mgmt;
+
+	pci_free_irq_vectors(hwdev->pdev);
+	kfree(cfg_mgmt->irq_info.irq);
+	cfg_mgmt->irq_info.irq = NULL;
+	kfree(cfg_mgmt);
+}
+
 int hinic3_alloc_irqs(struct hinic3_hwdev *hwdev, u16 num,
 		      struct msix_entry *alloc_arr, u16 *act_num)
 {

drivers/net/ethernet/huawei/hinic3/hinic3_hw_cfg.h

@@ -42,6 +42,9 @@ struct hinic3_cfg_mgmt_info {
 	struct hinic3_dev_cap  cap;
 };
 
+int hinic3_init_cfg_mgmt(struct hinic3_hwdev *hwdev);
+void hinic3_free_cfg_mgmt(struct hinic3_hwdev *hwdev);
+
 int hinic3_alloc_irqs(struct hinic3_hwdev *hwdev, u16 num,
 		      struct msix_entry *alloc_arr, u16 *act_num);
 void hinic3_free_irq(struct hinic3_hwdev *hwdev, u32 irq_id);

drivers/net/ethernet/huawei/hinic3/hinic3_hwdev.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 
+#include "hinic3_eqs.h"
 #include "hinic3_hw_comm.h"
 #include "hinic3_hwdev.h"
 #include "hinic3_hwif.h"
@@ -46,8 +47,16 @@ int hinic3_init_hwdev(struct pci_dev *pdev)
 		goto err_free_hwif;
 	}
 
+	err = hinic3_init_cfg_mgmt(hwdev);
+	if (err) {
+		dev_err(hwdev->dev, "Failed to init config mgmt\n");
+		goto err_destroy_workqueue;
+	}
+
 	return 0;
 
+err_destroy_workqueue:
+	destroy_workqueue(hwdev->workq);
 err_free_hwif:
 	hinic3_free_hwif(hwdev);
 err_free_hwdev:
@@ -59,6 +68,7 @@ int hinic3_init_hwdev(struct pci_dev *pdev)
 
 void hinic3_free_hwdev(struct hinic3_hwdev *hwdev)
 {
+	hinic3_free_cfg_mgmt(hwdev);
 	destroy_workqueue(hwdev->workq);
 	hinic3_free_hwif(hwdev);
 	kfree(hwdev);

drivers/net/ethernet/huawei/hinic3/hinic3_hwif.c

@@ -144,6 +144,18 @@ static int init_hwif_attr(struct hinic3_hwdev *hwdev)
 
 	set_hwif_attr(&hwif->attr, attr0, attr1, attr2, attr3, attr6);
 
+	if (!hwif->attr.num_ceqs) {
+		dev_err(hwdev->dev, "Ceq num cfg in fw is zero\n");
+		return -EFAULT;
+	}
+
+	if (!hwif->attr.num_irqs) {
+		dev_err(hwdev->dev,
+			"Irq num cfg in fw is zero, msix_flex_en %d\n",
+			hwif->attr.msix_flex_en);
+		return -EFAULT;
+	}
+
 	return 0;
 }
 

drivers/net/ethernet/huawei/hinic3/hinic3_lld.c

@@ -308,6 +308,7 @@ static void hinic3_func_uninit(struct pci_dev *pdev)
 {
 	struct hinic3_pcidev *pci_adapter = pci_get_drvdata(pdev);
 
+	hinic3_flush_mgmt_workq(pci_adapter->hwdev);
 	hinic3_detach_aux_devices(pci_adapter->hwdev);
 	hinic3_free_hwdev(pci_adapter->hwdev);
 }

drivers/net/ethernet/huawei/hinic3/hinic3_mgmt.c

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
+
+#include "hinic3_eqs.h"
+#include "hinic3_hwdev.h"
+#include "hinic3_mbox.h"
+#include "hinic3_mgmt.h"
+
+void hinic3_flush_mgmt_workq(struct hinic3_hwdev *hwdev)
+{
+	if (hwdev->aeqs)
+		flush_workqueue(hwdev->aeqs->workq);
+}
+
+void hinic3_mgmt_msg_aeqe_handler(struct hinic3_hwdev *hwdev, u8 *header,
+				  u8 size)
+{
+	if (MBOX_MSG_HEADER_GET(*(__force __le64 *)header, SOURCE) ==
+				MBOX_MSG_FROM_MBOX)
+		hinic3_mbox_func_aeqe_handler(hwdev, header, size);
+}

drivers/net/ethernet/huawei/hinic3/hinic3_mgmt.h

@@ -9,5 +9,7 @@
 struct hinic3_hwdev;
 
 void hinic3_flush_mgmt_workq(struct hinic3_hwdev *hwdev);
+void hinic3_mgmt_msg_aeqe_handler(struct hinic3_hwdev *hwdev,
+				  u8 *header, u8 size);
 
 #endif