net-next/hinic: Initialize api cmd resources

Initialize api cmd resources as part of management initialization.
Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com>
Signed-off-by: Zhao Chen <zhaochen6@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/huawei/hinic/Makefile

 obj-$(CONFIG_HINIC) += hinic.o
 
-hinic-y := hinic_main.o hinic_hw_dev.o hinic_hw_mgmt.o hinic_hw_eqs.o \
-	   hinic_hw_if.o
+hinic-y := hinic_main.o hinic_hw_dev.o hinic_hw_mgmt.o hinic_hw_api_cmd.o \
+	   hinic_hw_eqs.o hinic_hw_if.o

drivers/net/ethernet/huawei/hinic/hinic_hw_api_cmd.h

+/*
+ * Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+
+#ifndef HINIC_HW_API_CMD_H
+#define HINIC_HW_API_CMD_H
+
+#include <linux/types.h>
+
+#include "hinic_hw_if.h"
+
+enum hinic_api_cmd_chain_type {
+	HINIC_API_CMD_WRITE_TO_MGMT_CPU = 2,
+
+	HINIC_API_CMD_MAX,
+};
+
+struct hinic_api_cmd_chain_attr {
+	struct hinic_hwif               *hwif;
+	enum hinic_api_cmd_chain_type   chain_type;
+
+	u32                             num_cells;
+	u16                             cell_size;
+};
+
+struct hinic_api_cmd_status {
+	u64     header;
+	u32     status;
+	u32     rsvd0;
+	u32     rsvd1;
+	u32     rsvd2;
+	u64     rsvd3;
+};
+
+/* HW struct */
+struct hinic_api_cmd_cell {
+	u64 ctrl;
+
+	/* address is 64 bit in HW struct */
+	u64 next_cell_paddr;
+
+	u64 desc;
+
+	/* HW struct */
+	union {
+		struct {
+			u64 hw_cmd_paddr;
+		} write;
+
+		struct {
+			u64 hw_wb_resp_paddr;
+			u64 hw_cmd_paddr;
+		} read;
+	};
+};
+
+struct hinic_api_cmd_cell_ctxt {
+	dma_addr_t                      cell_paddr;
+	struct hinic_api_cmd_cell       *cell_vaddr;
+
+	dma_addr_t                      api_cmd_paddr;
+	u8                              *api_cmd_vaddr;
+};
+
+struct hinic_api_cmd_chain {
+	struct hinic_hwif               *hwif;
+	enum hinic_api_cmd_chain_type   chain_type;
+
+	u32                             num_cells;
+	u16                             cell_size;
+
+	/* HW members in 24 bit format */
+	u32                             prod_idx;
+	u32                             cons_idx;
+
+	struct hinic_api_cmd_cell_ctxt  *cell_ctxt;
+
+	dma_addr_t                      wb_status_paddr;
+	struct hinic_api_cmd_status     *wb_status;
+
+	dma_addr_t                      head_cell_paddr;
+	struct hinic_api_cmd_cell       *head_node;
+	struct hinic_api_cmd_cell       *curr_node;
+};
+
+int hinic_api_cmd_init(struct hinic_api_cmd_chain **chain,
+		       struct hinic_hwif *hwif);
+
+void hinic_api_cmd_free(struct hinic_api_cmd_chain **chain);
+
+#endif

drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.c

@@ -19,6 +19,7 @@
 
 #include "hinic_hw_if.h"
 #include "hinic_hw_eqs.h"
+#include "hinic_hw_api_cmd.h"
 #include "hinic_hw_mgmt.h"
 #include "hinic_hw_dev.h"
 
@@ -70,9 +71,17 @@ int hinic_pf_to_mgmt_init(struct hinic_pf_to_mgmt *pf_to_mgmt,
 {
 	struct hinic_pfhwdev *pfhwdev = mgmt_to_pfhwdev(pf_to_mgmt);
 	struct hinic_hwdev *hwdev = &pfhwdev->hwdev;
+	struct pci_dev *pdev = hwif->pdev;
+	int err;
 
 	pf_to_mgmt->hwif = hwif;
 
+	err = hinic_api_cmd_init(pf_to_mgmt->cmd_chain, hwif);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to initialize cmd chains\n");
+		return err;
+	}
+
 	hinic_aeq_register_hw_cb(&hwdev->aeqs, HINIC_MSG_FROM_MGMT_CPU,
 				 pf_to_mgmt,
 				 mgmt_msg_aeqe_handler);
@@ -89,4 +98,5 @@ void hinic_pf_to_mgmt_free(struct hinic_pf_to_mgmt *pf_to_mgmt)
 	struct hinic_hwdev *hwdev = &pfhwdev->hwdev;
 
 	hinic_aeq_unregister_hw_cb(&hwdev->aeqs, HINIC_MSG_FROM_MGMT_CPU);
+	hinic_api_cmd_free(pf_to_mgmt->cmd_chain);
 }

drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.h

@@ -19,6 +19,7 @@
 #include <linux/types.h>
 
 #include "hinic_hw_if.h"
+#include "hinic_hw_api_cmd.h"
 
 enum hinic_mgmt_msg_type {
 	HINIC_MGMT_MSG_SYNC = 1,
@@ -30,6 +31,8 @@ enum hinic_cfg_cmd {
 
 struct hinic_pf_to_mgmt {
 	struct hinic_hwif               *hwif;
+
+	struct hinic_api_cmd_chain      *cmd_chain[HINIC_API_CMD_MAX];
 };
 
 int hinic_msg_to_mgmt(struct hinic_pf_to_mgmt *pf_to_mgmt,