include/linux/qed/storage_common.h

/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and /or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __STORAGE_COMMON__
#define __STORAGE_COMMON__

#define NUM_OF_CMDQS_CQS (NUM_OF_GLOBAL_QUEUES / 2)
#define BDQ_NUM_RESOURCES (4)

#define BDQ_ID_RQ                        (0)
#define BDQ_ID_IMM_DATA          (1)
#define BDQ_NUM_IDS          (2)

#define SCSI_NUM_SGES_SLOW_SGL_THR      8

#define BDQ_MAX_EXTERNAL_RING_SIZE (1 << 15)

struct scsi_bd {
	struct regpair address;
	struct regpair opaque;
};

struct scsi_bdq_ram_drv_data {
	__le16 external_producer;
	__le16 reserved0[3];
};

struct scsi_sge {
	struct regpair sge_addr;
	__le32 sge_len;
	__le32 reserved;
};

struct scsi_cached_sges {
	struct scsi_sge sge[4];
};

struct scsi_drv_cmdq {
	__le16 cmdq_cons;
	__le16 reserved0;
	__le32 reserved1;
};

struct scsi_init_func_params {
	__le16 num_tasks;
	u8 log_page_size;
	u8 debug_mode;
	u8 reserved2[12];
};

struct scsi_init_func_queues {
	struct regpair glbl_q_params_addr;
	__le16 rq_buffer_size;
	__le16 cq_num_entries;
	__le16 cmdq_num_entries;
	u8 bdq_resource_id;
	u8 q_validity;
#define SCSI_INIT_FUNC_QUEUES_RQ_VALID_MASK        0x1
#define SCSI_INIT_FUNC_QUEUES_RQ_VALID_SHIFT       0
#define SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID_MASK  0x1
#define SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID_SHIFT 1
#define SCSI_INIT_FUNC_QUEUES_CMD_VALID_MASK       0x1
#define SCSI_INIT_FUNC_QUEUES_CMD_VALID_SHIFT      2
#define SCSI_INIT_FUNC_QUEUES_RESERVED_VALID_MASK  0x1F
#define SCSI_INIT_FUNC_QUEUES_RESERVED_VALID_SHIFT 3
	u8 num_queues;
	u8 queue_relative_offset;
	u8 cq_sb_pi;
	u8 cmdq_sb_pi;
	__le16 cq_cmdq_sb_num_arr[NUM_OF_CMDQS_CQS];
	__le16 reserved0;
	u8 bdq_pbl_num_entries[BDQ_NUM_IDS];
	struct regpair bdq_pbl_base_address[BDQ_NUM_IDS];
	__le16 bdq_xoff_threshold[BDQ_NUM_IDS];
	__le16 bdq_xon_threshold[BDQ_NUM_IDS];
	__le16 cmdq_xoff_threshold;
	__le16 cmdq_xon_threshold;
	__le32 reserved1;
};

struct scsi_ram_per_bdq_resource_drv_data {
	struct scsi_bdq_ram_drv_data drv_data_per_bdq_id[BDQ_NUM_IDS];
};

enum scsi_sgl_mode {
	SCSI_TX_SLOW_SGL,
	SCSI_FAST_SGL,
	MAX_SCSI_SGL_MODE
};

struct scsi_sgl_params {
	struct regpair sgl_addr;
	__le32 sgl_total_length;
	__le32 sge_offset;
	__le16 sgl_num_sges;
	u8 sgl_index;
	u8 reserved;
};

struct scsi_terminate_extra_params {
	__le16 unsolicited_cq_count;
	__le16 cmdq_count;
	u8 reserved[4];
};

#endif /* __STORAGE_COMMON__ */