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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_IF_H
#define HINIC_HW_IF_H
#include <linux/pci.h>
#include <linux/io.h>
#include <linux/types.h>
#include <asm/byteorder.h>
#define HINIC_DMA_ATTR_ST_SHIFT 0
#define HINIC_DMA_ATTR_AT_SHIFT 8
#define HINIC_DMA_ATTR_PH_SHIFT 10
#define HINIC_DMA_ATTR_NO_SNOOPING_SHIFT 12
#define HINIC_DMA_ATTR_TPH_EN_SHIFT 13
#define HINIC_DMA_ATTR_ST_MASK 0xFF
#define HINIC_DMA_ATTR_AT_MASK 0x3
#define HINIC_DMA_ATTR_PH_MASK 0x3
#define HINIC_DMA_ATTR_NO_SNOOPING_MASK 0x1
#define HINIC_DMA_ATTR_TPH_EN_MASK 0x1
#define HINIC_DMA_ATTR_SET(val, member) \
(((u32)(val) & HINIC_DMA_ATTR_##member##_MASK) << \
HINIC_DMA_ATTR_##member##_SHIFT)
#define HINIC_DMA_ATTR_CLEAR(val, member) \
((val) & (~(HINIC_DMA_ATTR_##member##_MASK \
<< HINIC_DMA_ATTR_##member##_SHIFT)))
#define HINIC_FA0_FUNC_IDX_SHIFT 0
#define HINIC_FA0_PF_IDX_SHIFT 10
#define HINIC_FA0_PCI_INTF_IDX_SHIFT 14
/* reserved members - off 16 */
#define HINIC_FA0_FUNC_TYPE_SHIFT 24
#define HINIC_FA0_FUNC_IDX_MASK 0x3FF
#define HINIC_FA0_PF_IDX_MASK 0xF
#define HINIC_FA0_PCI_INTF_IDX_MASK 0x3
#define HINIC_FA0_FUNC_TYPE_MASK 0x1
#define HINIC_FA0_GET(val, member) \
(((val) >> HINIC_FA0_##member##_SHIFT) & HINIC_FA0_##member##_MASK)
#define HINIC_FA1_AEQS_PER_FUNC_SHIFT 8
/* reserved members - off 10 */
#define HINIC_FA1_CEQS_PER_FUNC_SHIFT 12
/* reserved members - off 15 */
#define HINIC_FA1_IRQS_PER_FUNC_SHIFT 20
#define HINIC_FA1_DMA_ATTR_PER_FUNC_SHIFT 24
/* reserved members - off 27 */
#define HINIC_FA1_INIT_STATUS_SHIFT 30
#define HINIC_FA1_AEQS_PER_FUNC_MASK 0x3
#define HINIC_FA1_CEQS_PER_FUNC_MASK 0x7
#define HINIC_FA1_IRQS_PER_FUNC_MASK 0xF
#define HINIC_FA1_DMA_ATTR_PER_FUNC_MASK 0x7
#define HINIC_FA1_INIT_STATUS_MASK 0x1
#define HINIC_FA1_GET(val, member) \
(((val) >> HINIC_FA1_##member##_SHIFT) & HINIC_FA1_##member##_MASK)
#define HINIC_PPF_ELECTION_IDX_SHIFT 0
#define HINIC_PPF_ELECTION_IDX_MASK 0x1F
#define HINIC_PPF_ELECTION_SET(val, member) \
(((u32)(val) & HINIC_PPF_ELECTION_##member##_MASK) << \
HINIC_PPF_ELECTION_##member##_SHIFT)
#define HINIC_PPF_ELECTION_GET(val, member) \
(((val) >> HINIC_PPF_ELECTION_##member##_SHIFT) & \
HINIC_PPF_ELECTION_##member##_MASK)
#define HINIC_PPF_ELECTION_CLEAR(val, member) \
((val) & (~(HINIC_PPF_ELECTION_##member##_MASK \
<< HINIC_PPF_ELECTION_##member##_SHIFT)))
#define HINIC_HWIF_NUM_AEQS(hwif) ((hwif)->attr.num_aeqs)
#define HINIC_HWIF_NUM_CEQS(hwif) ((hwif)->attr.num_ceqs)
#define HINIC_HWIF_NUM_IRQS(hwif) ((hwif)->attr.num_irqs)
#define HINIC_HWIF_FUNC_IDX(hwif) ((hwif)->attr.func_idx)
#define HINIC_HWIF_PCI_INTF(hwif) ((hwif)->attr.pci_intf_idx)
#define HINIC_FUNC_TYPE(hwif) ((hwif)->attr.func_type)
#define HINIC_IS_PF(hwif) (HINIC_FUNC_TYPE(hwif) == HINIC_PF)
#define HINIC_IS_PPF(hwif) (HINIC_FUNC_TYPE(hwif) == HINIC_PPF)
#define HINIC_PCI_CFG_REGS_BAR 0
#define HINIC_PCIE_ST_DISABLE 0
#define HINIC_PCIE_AT_DISABLE 0
#define HINIC_PCIE_PH_DISABLE 0
enum hinic_pcie_nosnoop {
HINIC_PCIE_SNOOP = 0,
HINIC_PCIE_NO_SNOOP = 1,
};
enum hinic_pcie_tph {
HINIC_PCIE_TPH_DISABLE = 0,
HINIC_PCIE_TPH_ENABLE = 1,
};
enum hinic_func_type {
HINIC_PF = 0,
HINIC_PPF = 2,
};
struct hinic_func_attr {
u16 func_idx;
u8 pf_idx;
u8 pci_intf_idx;
enum hinic_func_type func_type;
u8 ppf_idx;
u16 num_irqs;
u8 num_aeqs;
u8 num_ceqs;
u8 num_dma_attr;
};
struct hinic_hwif {
struct pci_dev *pdev;
void __iomem *cfg_regs_bar;
struct hinic_func_attr attr;
};
static inline u32 hinic_hwif_read_reg(struct hinic_hwif *hwif, u32 reg)
{
return be32_to_cpu(readl(hwif->cfg_regs_bar + reg));
}
static inline void hinic_hwif_write_reg(struct hinic_hwif *hwif, u32 reg,
u32 val)
{
writel(cpu_to_be32(val), hwif->cfg_regs_bar + reg);
}
int hinic_init_hwif(struct hinic_hwif *hwif, struct pci_dev *pdev);
void hinic_free_hwif(struct hinic_hwif *hwif);
#endif
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