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/*
* 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_CMDQ_H
#define HINIC_CMDQ_H
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/pci.h>
#include "hinic_hw_if.h"
#include "hinic_hw_wq.h"
#define HINIC_CMDQ_CTXT_CURR_WQE_PAGE_PFN_SHIFT 0
#define HINIC_CMDQ_CTXT_EQ_ID_SHIFT 56
#define HINIC_CMDQ_CTXT_CEQ_ARM_SHIFT 61
#define HINIC_CMDQ_CTXT_CEQ_EN_SHIFT 62
#define HINIC_CMDQ_CTXT_WRAPPED_SHIFT 63
#define HINIC_CMDQ_CTXT_CURR_WQE_PAGE_PFN_MASK 0xFFFFFFFFFFFFF
#define HINIC_CMDQ_CTXT_EQ_ID_MASK 0x1F
#define HINIC_CMDQ_CTXT_CEQ_ARM_MASK 0x1
#define HINIC_CMDQ_CTXT_CEQ_EN_MASK 0x1
#define HINIC_CMDQ_CTXT_WRAPPED_MASK 0x1
#define HINIC_CMDQ_CTXT_PAGE_INFO_SET(val, member) \
(((u64)(val) & HINIC_CMDQ_CTXT_##member##_MASK) \
<< HINIC_CMDQ_CTXT_##member##_SHIFT)
#define HINIC_CMDQ_CTXT_PAGE_INFO_CLEAR(val, member) \
((val) & (~((u64)HINIC_CMDQ_CTXT_##member##_MASK \
<< HINIC_CMDQ_CTXT_##member##_SHIFT)))
#define HINIC_CMDQ_CTXT_WQ_BLOCK_PFN_SHIFT 0
#define HINIC_CMDQ_CTXT_CI_SHIFT 52
#define HINIC_CMDQ_CTXT_WQ_BLOCK_PFN_MASK 0xFFFFFFFFFFFFF
#define HINIC_CMDQ_CTXT_CI_MASK 0xFFF
#define HINIC_CMDQ_CTXT_BLOCK_INFO_SET(val, member) \
(((u64)(val) & HINIC_CMDQ_CTXT_##member##_MASK) \
<< HINIC_CMDQ_CTXT_##member##_SHIFT)
#define HINIC_CMDQ_CTXT_BLOCK_INFO_CLEAR(val, member) \
((val) & (~((u64)HINIC_CMDQ_CTXT_##member##_MASK \
<< HINIC_CMDQ_CTXT_##member##_SHIFT)))
#define HINIC_CMDQ_BUF_SIZE 2048
enum hinic_cmdq_type {
HINIC_CMDQ_SYNC,
HINIC_MAX_CMDQ_TYPES,
};
struct hinic_cmdq_buf {
void *buf;
dma_addr_t dma_addr;
size_t size;
};
struct hinic_cmdq_ctxt_info {
u64 curr_wqe_page_pfn;
u64 wq_block_pfn;
};
struct hinic_cmdq_ctxt {
u8 status;
u8 version;
u8 rsvd0[6];
u16 func_idx;
u8 cmdq_type;
u8 rsvd1[1];
u8 rsvd2[4];
struct hinic_cmdq_ctxt_info ctxt_info;
};
struct hinic_cmdq {
struct hinic_wq *wq;
enum hinic_cmdq_type cmdq_type;
int wrapped;
/* Lock for keeping the doorbell order */
spinlock_t cmdq_lock;
struct completion **done;
int **errcode;
/* doorbell area */
void __iomem *db_base;
};
struct hinic_cmdqs {
struct hinic_hwif *hwif;
struct pci_pool *cmdq_buf_pool;
struct hinic_wq *saved_wqs;
struct hinic_cmdq_pages cmdq_pages;
struct hinic_cmdq cmdq[HINIC_MAX_CMDQ_TYPES];
};
int hinic_alloc_cmdq_buf(struct hinic_cmdqs *cmdqs,
struct hinic_cmdq_buf *cmdq_buf);
void hinic_free_cmdq_buf(struct hinic_cmdqs *cmdqs,
struct hinic_cmdq_buf *cmdq_buf);
int hinic_cmdq_direct_resp(struct hinic_cmdqs *cmdqs,
enum hinic_mod_type mod, u8 cmd,
struct hinic_cmdq_buf *buf_in, u64 *out_param);
int hinic_init_cmdqs(struct hinic_cmdqs *cmdqs, struct hinic_hwif *hwif,
void __iomem **db_area);
void hinic_free_cmdqs(struct hinic_cmdqs *cmdqs);
#endif
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