1 files changed, 156 insertions, 0 deletions
diff --git a/drivers/net/ethernet/huawei/hinic3/hinic3_cmdq.h b/drivers/net/ethernet/huawei/hinic3/hinic3_cmdq.h
new file mode 100644
index 000000000000..f99c386a2780
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic3/hinic3_cmdq.h
@@ -0,0 +1,156 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved. */
+
+#ifndef _HINIC3_CMDQ_H_
+#define _HINIC3_CMDQ_H_
+
+#include <linux/dmapool.h>
+
+#include "hinic3_hw_intf.h"
+#include "hinic3_wq.h"
+
+#define CMDQ_DEPTH  4096
+
+struct cmdq_db {
+	__le32 db_head;
+	__le32 db_info;
+};
+
+/* hw defined cmdq wqe header */
+struct cmdq_header {
+	__le32 header_info;
+	__le32 saved_data;
+};
+
+struct cmdq_lcmd_bufdesc {
+	struct hinic3_sge sge;
+	__le64            rsvd2;
+	__le64            rsvd3;
+};
+
+struct cmdq_status {
+	__le32 status_info;
+};
+
+struct cmdq_ctrl {
+	__le32 ctrl_info;
+};
+
+struct cmdq_direct_resp {
+	__le64 val;
+	__le64 rsvd;
+};
+
+struct cmdq_completion {
+	union {
+		struct hinic3_sge       sge;
+		struct cmdq_direct_resp direct;
+	} resp;
+};
+
+struct cmdq_wqe_scmd {
+	struct cmdq_header     header;
+	__le64                 rsvd3;
+	struct cmdq_status     status;
+	struct cmdq_ctrl       ctrl;
+	struct cmdq_completion completion;
+	__le32                 rsvd10[6];
+};
+
+struct cmdq_wqe_lcmd {
+	struct cmdq_header       header;
+	struct cmdq_status       status;
+	struct cmdq_ctrl         ctrl;
+	struct cmdq_completion   completion;
+	struct cmdq_lcmd_bufdesc buf_desc;
+};
+
+struct cmdq_wqe {
+	union {
+		struct cmdq_wqe_scmd wqe_scmd;
+		struct cmdq_wqe_lcmd wqe_lcmd;
+	};
+};
+
+static_assert(sizeof(struct cmdq_wqe) == 64);
+
+enum hinic3_cmdq_type {
+	HINIC3_CMDQ_SYNC      = 0,
+	HINIC3_MAX_CMDQ_TYPES = 4
+};
+
+enum hinic3_cmdq_status {
+	HINIC3_CMDQ_ENABLE = BIT(0),
+};
+
+enum hinic3_cmdq_cmd_type {
+	HINIC3_CMD_TYPE_NONE,
+	HINIC3_CMD_TYPE_DIRECT_RESP,
+	HINIC3_CMD_TYPE_FAKE_TIMEOUT,
+	HINIC3_CMD_TYPE_TIMEOUT,
+	HINIC3_CMD_TYPE_FORCE_STOP,
+};
+
+struct hinic3_cmd_buf {
+	void       *buf;
+	dma_addr_t dma_addr;
+	__le16     size;
+	refcount_t ref_cnt;
+};
+
+struct hinic3_cmdq_cmd_info {
+	enum hinic3_cmdq_cmd_type cmd_type;
+	struct completion         *done;
+	int                       *errcode;
+	/* completion code */
+	int                       *cmpt_code;
+	__le64                    *direct_resp;
+	u64                       cmdq_msg_id;
+	struct hinic3_cmd_buf     *buf_in;
+};
+
+struct hinic3_cmdq {
+	struct hinic3_wq            wq;
+	enum hinic3_cmdq_type       cmdq_type;
+	u8                          wrapped;
+	/* synchronize command submission with completions via event queue */
+	spinlock_t                  cmdq_lock;
+	struct hinic3_cmdq_cmd_info *cmd_infos;
+	struct hinic3_hwdev         *hwdev;
+};
+
+struct hinic3_cmdqs {
+	struct hinic3_hwdev *hwdev;
+	struct hinic3_cmdq  cmdq[HINIC3_MAX_CMDQ_TYPES];
+	struct dma_pool     *cmd_buf_pool;
+	/* doorbell area */
+	u8 __iomem          *cmdqs_db_base;
+
+	/* When command queue uses multiple memory pages (1-level CLA), this
+	 * block will hold aggregated indirection table for all command queues
+	 * of cmdqs. Not used for small cmdq (0-level CLA).
+	 */
+	dma_addr_t          wq_block_paddr;
+	void                *wq_block_vaddr;
+
+	u32                 status;
+	u32                 disable_flag;
+	u8                  cmdq_num;
+};
+
+int hinic3_cmdqs_init(struct hinic3_hwdev *hwdev);
+void hinic3_cmdqs_free(struct hinic3_hwdev *hwdev);
+
+struct hinic3_cmd_buf *hinic3_alloc_cmd_buf(struct hinic3_hwdev *hwdev);
+void hinic3_free_cmd_buf(struct hinic3_hwdev *hwdev,
+			 struct hinic3_cmd_buf *cmd_buf);
+void hinic3_cmdq_ceq_handler(struct hinic3_hwdev *hwdev, __le32 ceqe_data);
+
+int hinic3_cmdq_direct_resp(struct hinic3_hwdev *hwdev, u8 mod, u8 cmd,
+			    struct hinic3_cmd_buf *buf_in, __le64 *out_param);
+
+void hinic3_cmdq_flush_sync_cmd(struct hinic3_hwdev *hwdev);
+int hinic3_reinit_cmdq_ctxts(struct hinic3_hwdev *hwdev);
+bool hinic3_cmdq_idle(struct hinic3_cmdq *cmdq);
+
+#endif