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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_HW_EQS_H
#define HINIC_HW_EQS_H
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/pci.h>
#include <linux/sizes.h>
#include <linux/bitops.h>
#include <linux/interrupt.h>
#include "hinic_hw_if.h"
#define HINIC_AEQ_CTRL_0_INT_IDX_SHIFT 0
#define HINIC_AEQ_CTRL_0_DMA_ATTR_SHIFT 12
#define HINIC_AEQ_CTRL_0_PCI_INTF_IDX_SHIFT 20
#define HINIC_AEQ_CTRL_0_INT_MODE_SHIFT 31
#define HINIC_AEQ_CTRL_0_INT_IDX_MASK 0x3FF
#define HINIC_AEQ_CTRL_0_DMA_ATTR_MASK 0x3F
#define HINIC_AEQ_CTRL_0_PCI_INTF_IDX_MASK 0x3
#define HINIC_AEQ_CTRL_0_INT_MODE_MASK 0x1
#define HINIC_AEQ_CTRL_0_SET(val, member) \
(((u32)(val) & HINIC_AEQ_CTRL_0_##member##_MASK) << \
HINIC_AEQ_CTRL_0_##member##_SHIFT)
#define HINIC_AEQ_CTRL_0_CLEAR(val, member) \
((val) & (~(HINIC_AEQ_CTRL_0_##member##_MASK \
<< HINIC_AEQ_CTRL_0_##member##_SHIFT)))
#define HINIC_AEQ_CTRL_1_LEN_SHIFT 0
#define HINIC_AEQ_CTRL_1_ELEM_SIZE_SHIFT 24
#define HINIC_AEQ_CTRL_1_PAGE_SIZE_SHIFT 28
#define HINIC_AEQ_CTRL_1_LEN_MASK 0x1FFFFF
#define HINIC_AEQ_CTRL_1_ELEM_SIZE_MASK 0x3
#define HINIC_AEQ_CTRL_1_PAGE_SIZE_MASK 0xF
#define HINIC_AEQ_CTRL_1_SET(val, member) \
(((u32)(val) & HINIC_AEQ_CTRL_1_##member##_MASK) << \
HINIC_AEQ_CTRL_1_##member##_SHIFT)
#define HINIC_AEQ_CTRL_1_CLEAR(val, member) \
((val) & (~(HINIC_AEQ_CTRL_1_##member##_MASK \
<< HINIC_AEQ_CTRL_1_##member##_SHIFT)))
#define HINIC_CEQ_CTRL_0_INTR_IDX_SHIFT 0
#define HINIC_CEQ_CTRL_0_DMA_ATTR_SHIFT 12
#define HINIC_CEQ_CTRL_0_KICK_THRESH_SHIFT 20
#define HINIC_CEQ_CTRL_0_PCI_INTF_IDX_SHIFT 24
#define HINIC_CEQ_CTRL_0_INTR_MODE_SHIFT 31
#define HINIC_CEQ_CTRL_0_INTR_IDX_MASK 0x3FF
#define HINIC_CEQ_CTRL_0_DMA_ATTR_MASK 0x3F
#define HINIC_CEQ_CTRL_0_KICK_THRESH_MASK 0xF
#define HINIC_CEQ_CTRL_0_PCI_INTF_IDX_MASK 0x3
#define HINIC_CEQ_CTRL_0_INTR_MODE_MASK 0x1
#define HINIC_CEQ_CTRL_0_SET(val, member) \
(((u32)(val) & HINIC_CEQ_CTRL_0_##member##_MASK) << \
HINIC_CEQ_CTRL_0_##member##_SHIFT)
#define HINIC_CEQ_CTRL_0_CLEAR(val, member) \
((val) & (~(HINIC_CEQ_CTRL_0_##member##_MASK \
<< HINIC_CEQ_CTRL_0_##member##_SHIFT)))
#define HINIC_CEQ_CTRL_1_LEN_SHIFT 0
#define HINIC_CEQ_CTRL_1_PAGE_SIZE_SHIFT 28
#define HINIC_CEQ_CTRL_1_LEN_MASK 0x1FFFFF
#define HINIC_CEQ_CTRL_1_PAGE_SIZE_MASK 0xF
#define HINIC_CEQ_CTRL_1_SET(val, member) \
(((u32)(val) & HINIC_CEQ_CTRL_1_##member##_MASK) << \
HINIC_CEQ_CTRL_1_##member##_SHIFT)
#define HINIC_CEQ_CTRL_1_CLEAR(val, member) \
((val) & (~(HINIC_CEQ_CTRL_1_##member##_MASK \
<< HINIC_CEQ_CTRL_1_##member##_SHIFT)))
#define HINIC_EQ_ELEM_DESC_TYPE_SHIFT 0
#define HINIC_EQ_ELEM_DESC_SRC_SHIFT 7
#define HINIC_EQ_ELEM_DESC_SIZE_SHIFT 8
#define HINIC_EQ_ELEM_DESC_WRAPPED_SHIFT 31
#define HINIC_EQ_ELEM_DESC_TYPE_MASK 0x7F
#define HINIC_EQ_ELEM_DESC_SRC_MASK 0x1
#define HINIC_EQ_ELEM_DESC_SIZE_MASK 0xFF
#define HINIC_EQ_ELEM_DESC_WRAPPED_MASK 0x1
#define HINIC_EQ_ELEM_DESC_SET(val, member) \
(((u32)(val) & HINIC_EQ_ELEM_DESC_##member##_MASK) << \
HINIC_EQ_ELEM_DESC_##member##_SHIFT)
#define HINIC_EQ_ELEM_DESC_GET(val, member) \
(((val) >> HINIC_EQ_ELEM_DESC_##member##_SHIFT) & \
HINIC_EQ_ELEM_DESC_##member##_MASK)
#define HINIC_EQ_CI_IDX_SHIFT 0
#define HINIC_EQ_CI_WRAPPED_SHIFT 20
#define HINIC_EQ_CI_XOR_CHKSUM_SHIFT 24
#define HINIC_EQ_CI_INT_ARMED_SHIFT 31
#define HINIC_EQ_CI_IDX_MASK 0xFFFFF
#define HINIC_EQ_CI_WRAPPED_MASK 0x1
#define HINIC_EQ_CI_XOR_CHKSUM_MASK 0xF
#define HINIC_EQ_CI_INT_ARMED_MASK 0x1
#define HINIC_EQ_CI_SET(val, member) \
(((u32)(val) & HINIC_EQ_CI_##member##_MASK) << \
HINIC_EQ_CI_##member##_SHIFT)
#define HINIC_EQ_CI_CLEAR(val, member) \
((val) & (~(HINIC_EQ_CI_##member##_MASK \
<< HINIC_EQ_CI_##member##_SHIFT)))
#define HINIC_MAX_AEQS 4
#define HINIC_MAX_CEQS 32
#define HINIC_AEQE_SIZE 64
#define HINIC_CEQE_SIZE 4
#define HINIC_AEQE_DESC_SIZE 4
#define HINIC_AEQE_DATA_SIZE \
(HINIC_AEQE_SIZE - HINIC_AEQE_DESC_SIZE)
#define HINIC_DEFAULT_AEQ_LEN 64
#define HINIC_DEFAULT_CEQ_LEN 1024
#define HINIC_EQ_PAGE_SIZE SZ_4K
#define HINIC_CEQ_ID_CMDQ 0
enum hinic_eq_type {
HINIC_AEQ,
HINIC_CEQ,
};
enum hinic_aeq_type {
HINIC_MSG_FROM_MGMT_CPU = 2,
HINIC_MAX_AEQ_EVENTS,
};
enum hinic_ceq_type {
HINIC_CEQ_CMDQ = 3,
HINIC_MAX_CEQ_EVENTS,
};
enum hinic_eqe_state {
HINIC_EQE_ENABLED = BIT(0),
HINIC_EQE_RUNNING = BIT(1),
};
struct hinic_aeq_elem {
u8 data[HINIC_AEQE_DATA_SIZE];
u32 desc;
};
struct hinic_eq_work {
struct work_struct work;
void *data;
};
struct hinic_eq {
struct hinic_hwif *hwif;
enum hinic_eq_type type;
int q_id;
u32 q_len;
u32 page_size;
u32 cons_idx;
int wrapped;
size_t elem_size;
int num_pages;
int num_elem_in_pg;
struct msix_entry msix_entry;
dma_addr_t *dma_addr;
void **virt_addr;
struct hinic_eq_work aeq_work;
struct tasklet_struct ceq_tasklet;
};
struct hinic_hw_event_cb {
void (*hwe_handler)(void *handle, void *data, u8 size);
void *handle;
unsigned long hwe_state;
};
struct hinic_aeqs {
struct hinic_hwif *hwif;
struct hinic_eq aeq[HINIC_MAX_AEQS];
int num_aeqs;
struct hinic_hw_event_cb hwe_cb[HINIC_MAX_AEQ_EVENTS];
struct workqueue_struct *workq;
};
struct hinic_ceq_cb {
void (*handler)(void *handle, u32 ceqe_data);
void *handle;
enum hinic_eqe_state ceqe_state;
};
struct hinic_ceqs {
struct hinic_hwif *hwif;
struct hinic_eq ceq[HINIC_MAX_CEQS];
int num_ceqs;
struct hinic_ceq_cb ceq_cb[HINIC_MAX_CEQ_EVENTS];
};
void hinic_aeq_register_hw_cb(struct hinic_aeqs *aeqs,
enum hinic_aeq_type event, void *handle,
void (*hwe_handler)(void *handle, void *data,
u8 size));
void hinic_aeq_unregister_hw_cb(struct hinic_aeqs *aeqs,
enum hinic_aeq_type event);
void hinic_ceq_register_cb(struct hinic_ceqs *ceqs,
enum hinic_ceq_type event, void *handle,
void (*ceq_cb)(void *handle, u32 ceqe_data));
void hinic_ceq_unregister_cb(struct hinic_ceqs *ceqs,
enum hinic_ceq_type event);
int hinic_aeqs_init(struct hinic_aeqs *aeqs, struct hinic_hwif *hwif,
int num_aeqs, u32 q_len, u32 page_size,
struct msix_entry *msix_entries);
void hinic_aeqs_free(struct hinic_aeqs *aeqs);
int hinic_ceqs_init(struct hinic_ceqs *ceqs, struct hinic_hwif *hwif,
int num_ceqs, u32 q_len, u32 page_size,
struct msix_entry *msix_entries);
void hinic_ceqs_free(struct hinic_ceqs *ceqs);
#endif
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