diff options
Diffstat (limited to 'drivers/net/ethernet/huawei/hinic3/hinic3_mbox.h')
| -rw-r--r-- | drivers/net/ethernet/huawei/hinic3/hinic3_mbox.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/net/ethernet/huawei/hinic3/hinic3_mbox.h b/drivers/net/ethernet/huawei/hinic3/hinic3_mbox.h new file mode 100644 index 000000000000..e71629e95086 --- /dev/null +++ b/drivers/net/ethernet/huawei/hinic3/hinic3_mbox.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved. */ + +#ifndef _HINIC3_MBOX_H_ +#define _HINIC3_MBOX_H_ + +#include <linux/bitfield.h> +#include <linux/mutex.h> + +struct hinic3_hwdev; +struct mgmt_msg_params; + +#define MBOX_MSG_HEADER_SRC_GLB_FUNC_IDX_MASK GENMASK_ULL(12, 0) +#define MBOX_MSG_HEADER_STATUS_MASK BIT_ULL(13) +#define MBOX_MSG_HEADER_SOURCE_MASK BIT_ULL(15) +#define MBOX_MSG_HEADER_AEQ_ID_MASK GENMASK_ULL(17, 16) +#define MBOX_MSG_HEADER_MSG_ID_MASK GENMASK_ULL(21, 18) +#define MBOX_MSG_HEADER_CMD_MASK GENMASK_ULL(31, 22) +#define MBOX_MSG_HEADER_MSG_LEN_MASK GENMASK_ULL(42, 32) +#define MBOX_MSG_HEADER_MODULE_MASK GENMASK_ULL(47, 43) +#define MBOX_MSG_HEADER_SEG_LEN_MASK GENMASK_ULL(53, 48) +#define MBOX_MSG_HEADER_NO_ACK_MASK BIT_ULL(54) +#define MBOX_MSG_HEADER_DATA_TYPE_MASK BIT_ULL(55) +#define MBOX_MSG_HEADER_SEQID_MASK GENMASK_ULL(61, 56) +#define MBOX_MSG_HEADER_LAST_MASK BIT_ULL(62) +#define MBOX_MSG_HEADER_DIRECTION_MASK BIT_ULL(63) + +#define MBOX_MSG_HEADER_SET(val, member) \ + FIELD_PREP(MBOX_MSG_HEADER_##member##_MASK, val) +#define MBOX_MSG_HEADER_GET(val, member) \ + FIELD_GET(MBOX_MSG_HEADER_##member##_MASK, le64_to_cpu(val)) + +/* identifies if a segment belongs to a message or to a response. A VF is only + * expected to send messages and receive responses. PF driver could receive + * messages and send responses. + */ +enum mbox_msg_direction_type { + MBOX_MSG_SEND = 0, + MBOX_MSG_RESP = 1, +}; + +/* Indicates if mbox message expects a response (ack) or not */ +enum mbox_msg_ack_type { + MBOX_MSG_ACK = 0, + MBOX_MSG_NO_ACK = 1, +}; + +enum mbox_msg_data_type { + MBOX_MSG_DATA_INLINE = 0, + MBOX_MSG_DATA_DMA = 1, +}; + +enum mbox_msg_src_type { + MBOX_MSG_FROM_MBOX = 1, +}; + +enum mbox_msg_aeq_type { + MBOX_MSG_AEQ_FOR_EVENT = 0, + MBOX_MSG_AEQ_FOR_MBOX = 1, +}; + +#define HINIC3_MBOX_WQ_NAME "hinic3_mbox" + +struct mbox_msg_info { + u8 msg_id; + u8 status; +}; + +struct hinic3_msg_desc { + u8 *msg; + __le16 msg_len; + u8 seq_id; + u8 mod; + __le16 cmd; + struct mbox_msg_info msg_info; +}; + +struct hinic3_msg_channel { + struct hinic3_msg_desc resp_msg; + struct hinic3_msg_desc recv_msg; +}; + +struct hinic3_send_mbox { + u8 __iomem *data; + void *wb_vaddr; + dma_addr_t wb_paddr; +}; + +enum mbox_event_state { + MBOX_EVENT_START = 0, + MBOX_EVENT_FAIL = 1, + MBOX_EVENT_SUCCESS = 2, + MBOX_EVENT_TIMEOUT = 3, + MBOX_EVENT_END = 4, +}; + +struct mbox_dma_msg { + __le32 xor; + __le32 dma_addr_high; + __le32 dma_addr_low; + __le32 msg_len; + __le64 rsvd; +}; + +struct mbox_dma_queue { + void *dma_buf_vaddr; + dma_addr_t dma_buf_paddr; + u16 depth; + u16 prod_idx; + u16 cons_idx; +}; + +struct hinic3_mbox { + struct hinic3_hwdev *hwdev; + /* lock for send mbox message and ack message */ + struct mutex mbox_send_lock; + struct hinic3_send_mbox send_mbox; + struct mbox_dma_queue sync_msg_queue; + struct mbox_dma_queue async_msg_queue; + struct workqueue_struct *workq; + /* driver and MGMT CPU */ + struct hinic3_msg_channel mgmt_msg; + /* VF to PF */ + struct hinic3_msg_channel *func_msg; + u8 send_msg_id; + enum mbox_event_state event_flag; + /* lock for mbox event flag */ + spinlock_t mbox_lock; +}; + +void hinic3_mbox_func_aeqe_handler(struct hinic3_hwdev *hwdev, u8 *header, + u8 size); +int hinic3_init_mbox(struct hinic3_hwdev *hwdev); +void hinic3_free_mbox(struct hinic3_hwdev *hwdev); + +int hinic3_send_mbox_to_mgmt(struct hinic3_hwdev *hwdev, u8 mod, u16 cmd, + const struct mgmt_msg_params *msg_params); +int hinic3_send_mbox_to_mgmt_no_ack(struct hinic3_hwdev *hwdev, u8 mod, u16 cmd, + const struct mgmt_msg_params *msg_params); + +#endif |