scsi: hisi_sas: workaround SoC about abort timeout bug

[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / hisi_sas / hisi_sas_v2_hw.c

/*
 * Copyright (c) 2016 Linaro Ltd.
 * Copyright (c) 2016 Hisilicon Limited.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#include "hisi_sas.h"
#define DRV_NAME "hisi_sas_v2_hw"

/* global registers need init*/
#define DLVRY_QUEUE_ENABLE              0x0
#define IOST_BASE_ADDR_LO               0x8
#define IOST_BASE_ADDR_HI               0xc
#define ITCT_BASE_ADDR_LO               0x10
#define ITCT_BASE_ADDR_HI               0x14
#define IO_BROKEN_MSG_ADDR_LO           0x18
#define IO_BROKEN_MSG_ADDR_HI           0x1c
#define PHY_CONTEXT                     0x20
#define PHY_STATE                       0x24
#define PHY_PORT_NUM_MA                 0x28
#define PORT_STATE                      0x2c
#define PORT_STATE_PHY8_PORT_NUM_OFF    16
#define PORT_STATE_PHY8_PORT_NUM_MSK    (0xf << PORT_STATE_PHY8_PORT_NUM_OFF)
#define PORT_STATE_PHY8_CONN_RATE_OFF   20
#define PORT_STATE_PHY8_CONN_RATE_MSK   (0xf << PORT_STATE_PHY8_CONN_RATE_OFF)
#define PHY_CONN_RATE                   0x30
#define HGC_TRANS_TASK_CNT_LIMIT        0x38
#define AXI_AHB_CLK_CFG                 0x3c
#define ITCT_CLR                        0x44
#define ITCT_CLR_EN_OFF                 16
#define ITCT_CLR_EN_MSK                 (0x1 << ITCT_CLR_EN_OFF)
#define ITCT_DEV_OFF                    0
#define ITCT_DEV_MSK                    (0x7ff << ITCT_DEV_OFF)
#define AXI_USER1                       0x48
#define AXI_USER2                       0x4c
#define IO_SATA_BROKEN_MSG_ADDR_LO      0x58
#define IO_SATA_BROKEN_MSG_ADDR_HI      0x5c
#define SATA_INITI_D2H_STORE_ADDR_LO    0x60
#define SATA_INITI_D2H_STORE_ADDR_HI    0x64
#define HGC_SAS_TX_OPEN_FAIL_RETRY_CTRL 0x84
#define HGC_SAS_TXFAIL_RETRY_CTRL       0x88
#define HGC_GET_ITV_TIME                0x90
#define DEVICE_MSG_WORK_MODE            0x94
#define OPENA_WT_CONTI_TIME             0x9c
#define I_T_NEXUS_LOSS_TIME             0xa0
#define MAX_CON_TIME_LIMIT_TIME         0xa4
#define BUS_INACTIVE_LIMIT_TIME         0xa8
#define REJECT_TO_OPEN_LIMIT_TIME       0xac
#define CFG_AGING_TIME                  0xbc
#define HGC_DFX_CFG2                    0xc0
#define HGC_IOMB_PROC1_STATUS   0x104
#define CFG_1US_TIMER_TRSH              0xcc
#define HGC_LM_DFX_STATUS2              0x128
#define HGC_LM_DFX_STATUS2_IOSTLIST_OFF         0
#define HGC_LM_DFX_STATUS2_IOSTLIST_MSK (0xfff << \
                                         HGC_LM_DFX_STATUS2_IOSTLIST_OFF)
#define HGC_LM_DFX_STATUS2_ITCTLIST_OFF         12
#define HGC_LM_DFX_STATUS2_ITCTLIST_MSK (0x7ff << \
                                         HGC_LM_DFX_STATUS2_ITCTLIST_OFF)
#define HGC_CQE_ECC_ADDR                0x13c
#define HGC_CQE_ECC_1B_ADDR_OFF 0
#define HGC_CQE_ECC_1B_ADDR_MSK (0x3f << HGC_CQE_ECC_1B_ADDR_OFF)
#define HGC_CQE_ECC_MB_ADDR_OFF 8
#define HGC_CQE_ECC_MB_ADDR_MSK (0x3f << HGC_CQE_ECC_MB_ADDR_OFF)
#define HGC_IOST_ECC_ADDR               0x140
#define HGC_IOST_ECC_1B_ADDR_OFF        0
#define HGC_IOST_ECC_1B_ADDR_MSK        (0x3ff << HGC_IOST_ECC_1B_ADDR_OFF)
#define HGC_IOST_ECC_MB_ADDR_OFF        16
#define HGC_IOST_ECC_MB_ADDR_MSK        (0x3ff << HGC_IOST_ECC_MB_ADDR_OFF)
#define HGC_DQE_ECC_ADDR                0x144
#define HGC_DQE_ECC_1B_ADDR_OFF 0
#define HGC_DQE_ECC_1B_ADDR_MSK (0xfff << HGC_DQE_ECC_1B_ADDR_OFF)
#define HGC_DQE_ECC_MB_ADDR_OFF 16
#define HGC_DQE_ECC_MB_ADDR_MSK (0xfff << HGC_DQE_ECC_MB_ADDR_OFF)
#define HGC_INVLD_DQE_INFO              0x148
#define HGC_INVLD_DQE_INFO_FB_CH0_OFF   9
#define HGC_INVLD_DQE_INFO_FB_CH0_MSK   (0x1 << HGC_INVLD_DQE_INFO_FB_CH0_OFF)
#define HGC_INVLD_DQE_INFO_FB_CH3_OFF   18
#define HGC_ITCT_ECC_ADDR               0x150
#define HGC_ITCT_ECC_1B_ADDR_OFF                0
#define HGC_ITCT_ECC_1B_ADDR_MSK                (0x3ff << \
                                                 HGC_ITCT_ECC_1B_ADDR_OFF)
#define HGC_ITCT_ECC_MB_ADDR_OFF                16
#define HGC_ITCT_ECC_MB_ADDR_MSK                (0x3ff << \
                                                 HGC_ITCT_ECC_MB_ADDR_OFF)
#define HGC_AXI_FIFO_ERR_INFO   0x154
#define AXI_ERR_INFO_OFF                0
#define AXI_ERR_INFO_MSK                (0xff << AXI_ERR_INFO_OFF)
#define FIFO_ERR_INFO_OFF               8
#define FIFO_ERR_INFO_MSK               (0xff << FIFO_ERR_INFO_OFF)
#define INT_COAL_EN                     0x19c
#define OQ_INT_COAL_TIME                0x1a0
#define OQ_INT_COAL_CNT                 0x1a4
#define ENT_INT_COAL_TIME               0x1a8
#define ENT_INT_COAL_CNT                0x1ac
#define OQ_INT_SRC                      0x1b0
#define OQ_INT_SRC_MSK                  0x1b4
#define ENT_INT_SRC1                    0x1b8
#define ENT_INT_SRC1_D2H_FIS_CH0_OFF    0
#define ENT_INT_SRC1_D2H_FIS_CH0_MSK    (0x1 << ENT_INT_SRC1_D2H_FIS_CH0_OFF)
#define ENT_INT_SRC1_D2H_FIS_CH1_OFF    8
#define ENT_INT_SRC1_D2H_FIS_CH1_MSK    (0x1 << ENT_INT_SRC1_D2H_FIS_CH1_OFF)
#define ENT_INT_SRC2                    0x1bc
#define ENT_INT_SRC3                    0x1c0
#define ENT_INT_SRC3_WP_DEPTH_OFF               8
#define ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF      9
#define ENT_INT_SRC3_RP_DEPTH_OFF               10
#define ENT_INT_SRC3_AXI_OFF                    11
#define ENT_INT_SRC3_FIFO_OFF                   12
#define ENT_INT_SRC3_LM_OFF                             14
#define ENT_INT_SRC3_ITC_INT_OFF        15
#define ENT_INT_SRC3_ITC_INT_MSK        (0x1 << ENT_INT_SRC3_ITC_INT_OFF)
#define ENT_INT_SRC3_ABT_OFF            16
#define ENT_INT_SRC_MSK1                0x1c4
#define ENT_INT_SRC_MSK2                0x1c8
#define ENT_INT_SRC_MSK3                0x1cc
#define ENT_INT_SRC_MSK3_ENT95_MSK_OFF  31
#define ENT_INT_SRC_MSK3_ENT95_MSK_MSK  (0x1 << ENT_INT_SRC_MSK3_ENT95_MSK_OFF)
#define SAS_ECC_INTR                    0x1e8
#define SAS_ECC_INTR_DQE_ECC_1B_OFF             0
#define SAS_ECC_INTR_DQE_ECC_MB_OFF             1
#define SAS_ECC_INTR_IOST_ECC_1B_OFF    2
#define SAS_ECC_INTR_IOST_ECC_MB_OFF    3
#define SAS_ECC_INTR_ITCT_ECC_MB_OFF    4
#define SAS_ECC_INTR_ITCT_ECC_1B_OFF    5
#define SAS_ECC_INTR_IOSTLIST_ECC_MB_OFF        6
#define SAS_ECC_INTR_IOSTLIST_ECC_1B_OFF        7
#define SAS_ECC_INTR_ITCTLIST_ECC_1B_OFF        8
#define SAS_ECC_INTR_ITCTLIST_ECC_MB_OFF        9
#define SAS_ECC_INTR_CQE_ECC_1B_OFF             10
#define SAS_ECC_INTR_CQE_ECC_MB_OFF             11
#define SAS_ECC_INTR_NCQ_MEM0_ECC_MB_OFF        12
#define SAS_ECC_INTR_NCQ_MEM0_ECC_1B_OFF        13
#define SAS_ECC_INTR_NCQ_MEM1_ECC_MB_OFF        14
#define SAS_ECC_INTR_NCQ_MEM1_ECC_1B_OFF        15
#define SAS_ECC_INTR_NCQ_MEM2_ECC_MB_OFF        16
#define SAS_ECC_INTR_NCQ_MEM2_ECC_1B_OFF        17
#define SAS_ECC_INTR_NCQ_MEM3_ECC_MB_OFF        18
#define SAS_ECC_INTR_NCQ_MEM3_ECC_1B_OFF        19
#define SAS_ECC_INTR_MSK                0x1ec
#define HGC_ERR_STAT_EN                 0x238
#define DLVRY_Q_0_BASE_ADDR_LO          0x260
#define DLVRY_Q_0_BASE_ADDR_HI          0x264
#define DLVRY_Q_0_DEPTH                 0x268
#define DLVRY_Q_0_WR_PTR                0x26c
#define DLVRY_Q_0_RD_PTR                0x270
#define HYPER_STREAM_ID_EN_CFG          0xc80
#define OQ0_INT_SRC_MSK                 0xc90
#define COMPL_Q_0_BASE_ADDR_LO          0x4e0
#define COMPL_Q_0_BASE_ADDR_HI          0x4e4
#define COMPL_Q_0_DEPTH                 0x4e8
#define COMPL_Q_0_WR_PTR                0x4ec
#define COMPL_Q_0_RD_PTR                0x4f0
#define HGC_RXM_DFX_STATUS14    0xae8
#define HGC_RXM_DFX_STATUS14_MEM0_OFF           0
#define HGC_RXM_DFX_STATUS14_MEM0_MSK           (0x1ff << \
                                                 HGC_RXM_DFX_STATUS14_MEM0_OFF)
#define HGC_RXM_DFX_STATUS14_MEM1_OFF           9
#define HGC_RXM_DFX_STATUS14_MEM1_MSK           (0x1ff << \
                                                 HGC_RXM_DFX_STATUS14_MEM1_OFF)
#define HGC_RXM_DFX_STATUS14_MEM2_OFF           18
#define HGC_RXM_DFX_STATUS14_MEM2_MSK           (0x1ff << \
                                                 HGC_RXM_DFX_STATUS14_MEM2_OFF)
#define HGC_RXM_DFX_STATUS15    0xaec
#define HGC_RXM_DFX_STATUS15_MEM3_OFF           0
#define HGC_RXM_DFX_STATUS15_MEM3_MSK           (0x1ff << \
                                                 HGC_RXM_DFX_STATUS15_MEM3_OFF)
/* phy registers need init */
#define PORT_BASE                       (0x2000)

#define PHY_CFG                         (PORT_BASE + 0x0)
#define HARD_PHY_LINKRATE               (PORT_BASE + 0x4)
#define PHY_CFG_ENA_OFF                 0
#define PHY_CFG_ENA_MSK                 (0x1 << PHY_CFG_ENA_OFF)
#define PHY_CFG_DC_OPT_OFF              2
#define PHY_CFG_DC_OPT_MSK              (0x1 << PHY_CFG_DC_OPT_OFF)
#define PROG_PHY_LINK_RATE              (PORT_BASE + 0x8)
#define PROG_PHY_LINK_RATE_MAX_OFF      0
#define PROG_PHY_LINK_RATE_MAX_MSK      (0xff << PROG_PHY_LINK_RATE_MAX_OFF)
#define PHY_CTRL                        (PORT_BASE + 0x14)
#define PHY_CTRL_RESET_OFF              0
#define PHY_CTRL_RESET_MSK              (0x1 << PHY_CTRL_RESET_OFF)
#define SAS_PHY_CTRL                    (PORT_BASE + 0x20)
#define SL_CFG                          (PORT_BASE + 0x84)
#define PHY_PCN                         (PORT_BASE + 0x44)
#define SL_TOUT_CFG                     (PORT_BASE + 0x8c)
#define SL_CONTROL                      (PORT_BASE + 0x94)
#define SL_CONTROL_NOTIFY_EN_OFF        0
#define SL_CONTROL_NOTIFY_EN_MSK        (0x1 << SL_CONTROL_NOTIFY_EN_OFF)
#define SL_CONTROL_CTA_OFF              17
#define SL_CONTROL_CTA_MSK              (0x1 << SL_CONTROL_CTA_OFF)
#define RX_PRIMS_STATUS         (PORT_BASE + 0x98)
#define RX_BCAST_CHG_OFF        1
#define RX_BCAST_CHG_MSK        (0x1 << RX_BCAST_CHG_OFF)
#define TX_ID_DWORD0                    (PORT_BASE + 0x9c)
#define TX_ID_DWORD1                    (PORT_BASE + 0xa0)
#define TX_ID_DWORD2                    (PORT_BASE + 0xa4)
#define TX_ID_DWORD3                    (PORT_BASE + 0xa8)
#define TX_ID_DWORD4                    (PORT_BASE + 0xaC)
#define TX_ID_DWORD5                    (PORT_BASE + 0xb0)
#define TX_ID_DWORD6                    (PORT_BASE + 0xb4)
#define TXID_AUTO                       (PORT_BASE + 0xb8)
#define TXID_AUTO_CT3_OFF               1
#define TXID_AUTO_CT3_MSK               (0x1 << TXID_AUTO_CT3_OFF)
#define TXID_AUTO_CTB_OFF               11
#define TXID_AUTO_CTB_MSK               (0x1 << TXID_AUTO_CTB_OFF)
#define TX_HARDRST_OFF          2
#define TX_HARDRST_MSK          (0x1 << TX_HARDRST_OFF)
#define RX_IDAF_DWORD0                  (PORT_BASE + 0xc4)
#define RX_IDAF_DWORD1                  (PORT_BASE + 0xc8)
#define RX_IDAF_DWORD2                  (PORT_BASE + 0xcc)
#define RX_IDAF_DWORD3                  (PORT_BASE + 0xd0)
#define RX_IDAF_DWORD4                  (PORT_BASE + 0xd4)
#define RX_IDAF_DWORD5                  (PORT_BASE + 0xd8)
#define RX_IDAF_DWORD6                  (PORT_BASE + 0xdc)
#define RXOP_CHECK_CFG_H                (PORT_BASE + 0xfc)
#define CON_CONTROL                     (PORT_BASE + 0x118)
#define CON_CONTROL_CFG_OPEN_ACC_STP_OFF        0
#define CON_CONTROL_CFG_OPEN_ACC_STP_MSK        \
                (0x01 << CON_CONTROL_CFG_OPEN_ACC_STP_OFF)
#define DONE_RECEIVED_TIME              (PORT_BASE + 0x11c)
#define CHL_INT0                        (PORT_BASE + 0x1b4)
#define CHL_INT0_HOTPLUG_TOUT_OFF       0
#define CHL_INT0_HOTPLUG_TOUT_MSK       (0x1 << CHL_INT0_HOTPLUG_TOUT_OFF)
#define CHL_INT0_SL_RX_BCST_ACK_OFF     1
#define CHL_INT0_SL_RX_BCST_ACK_MSK     (0x1 << CHL_INT0_SL_RX_BCST_ACK_OFF)
#define CHL_INT0_SL_PHY_ENABLE_OFF      2
#define CHL_INT0_SL_PHY_ENABLE_MSK      (0x1 << CHL_INT0_SL_PHY_ENABLE_OFF)
#define CHL_INT0_NOT_RDY_OFF            4
#define CHL_INT0_NOT_RDY_MSK            (0x1 << CHL_INT0_NOT_RDY_OFF)
#define CHL_INT0_PHY_RDY_OFF            5
#define CHL_INT0_PHY_RDY_MSK            (0x1 << CHL_INT0_PHY_RDY_OFF)
#define CHL_INT1                        (PORT_BASE + 0x1b8)
#define CHL_INT1_DMAC_TX_ECC_ERR_OFF    15
#define CHL_INT1_DMAC_TX_ECC_ERR_MSK    (0x1 << CHL_INT1_DMAC_TX_ECC_ERR_OFF)
#define CHL_INT1_DMAC_RX_ECC_ERR_OFF    17
#define CHL_INT1_DMAC_RX_ECC_ERR_MSK    (0x1 << CHL_INT1_DMAC_RX_ECC_ERR_OFF)
#define CHL_INT2                        (PORT_BASE + 0x1bc)
#define CHL_INT0_MSK                    (PORT_BASE + 0x1c0)
#define CHL_INT1_MSK                    (PORT_BASE + 0x1c4)
#define CHL_INT2_MSK                    (PORT_BASE + 0x1c8)
#define CHL_INT_COAL_EN                 (PORT_BASE + 0x1d0)
#define DMA_TX_DFX0                     (PORT_BASE + 0x200)
#define DMA_TX_DFX1                     (PORT_BASE + 0x204)
#define DMA_TX_DFX1_IPTT_OFF            0
#define DMA_TX_DFX1_IPTT_MSK            (0xffff << DMA_TX_DFX1_IPTT_OFF)
#define DMA_TX_FIFO_DFX0                (PORT_BASE + 0x240)
#define PORT_DFX0                       (PORT_BASE + 0x258)
#define LINK_DFX2                       (PORT_BASE + 0X264)
#define LINK_DFX2_RCVR_HOLD_STS_OFF     9
#define LINK_DFX2_RCVR_HOLD_STS_MSK     (0x1 << LINK_DFX2_RCVR_HOLD_STS_OFF)
#define LINK_DFX2_SEND_HOLD_STS_OFF     10
#define LINK_DFX2_SEND_HOLD_STS_MSK     (0x1 << LINK_DFX2_SEND_HOLD_STS_OFF)
#define PHY_CTRL_RDY_MSK                (PORT_BASE + 0x2b0)
#define PHYCTRL_NOT_RDY_MSK             (PORT_BASE + 0x2b4)
#define PHYCTRL_DWS_RESET_MSK           (PORT_BASE + 0x2b8)
#define PHYCTRL_PHY_ENA_MSK             (PORT_BASE + 0x2bc)
#define SL_RX_BCAST_CHK_MSK             (PORT_BASE + 0x2c0)
#define PHYCTRL_OOB_RESTART_MSK         (PORT_BASE + 0x2c4)
#define DMA_TX_STATUS                   (PORT_BASE + 0x2d0)
#define DMA_TX_STATUS_BUSY_OFF          0
#define DMA_TX_STATUS_BUSY_MSK          (0x1 << DMA_TX_STATUS_BUSY_OFF)
#define DMA_RX_STATUS                   (PORT_BASE + 0x2e8)
#define DMA_RX_STATUS_BUSY_OFF          0
#define DMA_RX_STATUS_BUSY_MSK          (0x1 << DMA_RX_STATUS_BUSY_OFF)

#define AXI_CFG                         (0x5100)
#define AM_CFG_MAX_TRANS                (0x5010)
#define AM_CFG_SINGLE_PORT_MAX_TRANS    (0x5014)

#define AXI_MASTER_CFG_BASE             (0x5000)
#define AM_CTRL_GLOBAL                  (0x0)
#define AM_CURR_TRANS_RETURN    (0x150)

/* HW dma structures */
/* Delivery queue header */
/* dw0 */
#define CMD_HDR_ABORT_FLAG_OFF          0
#define CMD_HDR_ABORT_FLAG_MSK          (0x3 << CMD_HDR_ABORT_FLAG_OFF)
#define CMD_HDR_ABORT_DEVICE_TYPE_OFF   2
#define CMD_HDR_ABORT_DEVICE_TYPE_MSK   (0x1 << CMD_HDR_ABORT_DEVICE_TYPE_OFF)
#define CMD_HDR_RESP_REPORT_OFF         5
#define CMD_HDR_RESP_REPORT_MSK         (0x1 << CMD_HDR_RESP_REPORT_OFF)
#define CMD_HDR_TLR_CTRL_OFF            6
#define CMD_HDR_TLR_CTRL_MSK            (0x3 << CMD_HDR_TLR_CTRL_OFF)
#define CMD_HDR_PORT_OFF                18
#define CMD_HDR_PORT_MSK                (0xf << CMD_HDR_PORT_OFF)
#define CMD_HDR_PRIORITY_OFF            27
#define CMD_HDR_PRIORITY_MSK            (0x1 << CMD_HDR_PRIORITY_OFF)
#define CMD_HDR_CMD_OFF                 29
#define CMD_HDR_CMD_MSK                 (0x7 << CMD_HDR_CMD_OFF)
/* dw1 */
#define CMD_HDR_DIR_OFF                 5
#define CMD_HDR_DIR_MSK                 (0x3 << CMD_HDR_DIR_OFF)
#define CMD_HDR_RESET_OFF               7
#define CMD_HDR_RESET_MSK               (0x1 << CMD_HDR_RESET_OFF)
#define CMD_HDR_VDTL_OFF                10
#define CMD_HDR_VDTL_MSK                (0x1 << CMD_HDR_VDTL_OFF)
#define CMD_HDR_FRAME_TYPE_OFF          11
#define CMD_HDR_FRAME_TYPE_MSK          (0x1f << CMD_HDR_FRAME_TYPE_OFF)
#define CMD_HDR_DEV_ID_OFF              16
#define CMD_HDR_DEV_ID_MSK              (0xffff << CMD_HDR_DEV_ID_OFF)
/* dw2 */
#define CMD_HDR_CFL_OFF                 0
#define CMD_HDR_CFL_MSK                 (0x1ff << CMD_HDR_CFL_OFF)
#define CMD_HDR_NCQ_TAG_OFF             10
#define CMD_HDR_NCQ_TAG_MSK             (0x1f << CMD_HDR_NCQ_TAG_OFF)
#define CMD_HDR_MRFL_OFF                15
#define CMD_HDR_MRFL_MSK                (0x1ff << CMD_HDR_MRFL_OFF)
#define CMD_HDR_SG_MOD_OFF              24
#define CMD_HDR_SG_MOD_MSK              (0x3 << CMD_HDR_SG_MOD_OFF)
#define CMD_HDR_FIRST_BURST_OFF         26
#define CMD_HDR_FIRST_BURST_MSK         (0x1 << CMD_HDR_SG_MOD_OFF)
/* dw3 */
#define CMD_HDR_IPTT_OFF                0
#define CMD_HDR_IPTT_MSK                (0xffff << CMD_HDR_IPTT_OFF)
/* dw6 */
#define CMD_HDR_DIF_SGL_LEN_OFF         0
#define CMD_HDR_DIF_SGL_LEN_MSK         (0xffff << CMD_HDR_DIF_SGL_LEN_OFF)
#define CMD_HDR_DATA_SGL_LEN_OFF        16
#define CMD_HDR_DATA_SGL_LEN_MSK        (0xffff << CMD_HDR_DATA_SGL_LEN_OFF)
#define CMD_HDR_ABORT_IPTT_OFF          16
#define CMD_HDR_ABORT_IPTT_MSK          (0xffff << CMD_HDR_ABORT_IPTT_OFF)

/* Completion header */
/* dw0 */
#define CMPLT_HDR_ERR_PHASE_OFF 2
#define CMPLT_HDR_ERR_PHASE_MSK (0xff << CMPLT_HDR_ERR_PHASE_OFF)
#define CMPLT_HDR_RSPNS_XFRD_OFF        10
#define CMPLT_HDR_RSPNS_XFRD_MSK        (0x1 << CMPLT_HDR_RSPNS_XFRD_OFF)
#define CMPLT_HDR_ERX_OFF               12
#define CMPLT_HDR_ERX_MSK               (0x1 << CMPLT_HDR_ERX_OFF)
#define CMPLT_HDR_ABORT_STAT_OFF        13
#define CMPLT_HDR_ABORT_STAT_MSK        (0x7 << CMPLT_HDR_ABORT_STAT_OFF)
/* abort_stat */
#define STAT_IO_NOT_VALID               0x1
#define STAT_IO_NO_DEVICE               0x2
#define STAT_IO_COMPLETE                0x3
#define STAT_IO_ABORTED                 0x4
/* dw1 */
#define CMPLT_HDR_IPTT_OFF              0
#define CMPLT_HDR_IPTT_MSK              (0xffff << CMPLT_HDR_IPTT_OFF)
#define CMPLT_HDR_DEV_ID_OFF            16
#define CMPLT_HDR_DEV_ID_MSK            (0xffff << CMPLT_HDR_DEV_ID_OFF)

/* ITCT header */
/* qw0 */
#define ITCT_HDR_DEV_TYPE_OFF           0
#define ITCT_HDR_DEV_TYPE_MSK           (0x3 << ITCT_HDR_DEV_TYPE_OFF)
#define ITCT_HDR_VALID_OFF              2
#define ITCT_HDR_VALID_MSK              (0x1 << ITCT_HDR_VALID_OFF)
#define ITCT_HDR_MCR_OFF                5
#define ITCT_HDR_MCR_MSK                (0xf << ITCT_HDR_MCR_OFF)
#define ITCT_HDR_VLN_OFF                9
#define ITCT_HDR_VLN_MSK                (0xf << ITCT_HDR_VLN_OFF)
#define ITCT_HDR_SMP_TIMEOUT_OFF        16
#define ITCT_HDR_SMP_TIMEOUT_8US        1
#define ITCT_HDR_SMP_TIMEOUT            (ITCT_HDR_SMP_TIMEOUT_8US * \
                                         250) /* 2ms */
#define ITCT_HDR_AWT_CONTINUE_OFF       25
#define ITCT_HDR_PORT_ID_OFF            28
#define ITCT_HDR_PORT_ID_MSK            (0xf << ITCT_HDR_PORT_ID_OFF)
/* qw2 */
#define ITCT_HDR_INLT_OFF               0
#define ITCT_HDR_INLT_MSK               (0xffffULL << ITCT_HDR_INLT_OFF)
#define ITCT_HDR_BITLT_OFF              16
#define ITCT_HDR_BITLT_MSK              (0xffffULL << ITCT_HDR_BITLT_OFF)
#define ITCT_HDR_MCTLT_OFF              32
#define ITCT_HDR_MCTLT_MSK              (0xffffULL << ITCT_HDR_MCTLT_OFF)
#define ITCT_HDR_RTOLT_OFF              48
#define ITCT_HDR_RTOLT_MSK              (0xffffULL << ITCT_HDR_RTOLT_OFF)

#define HISI_SAS_FATAL_INT_NR   2

struct hisi_sas_complete_v2_hdr {
        __le32 dw0;
        __le32 dw1;
        __le32 act;
        __le32 dw3;
};

struct hisi_sas_err_record_v2 {
        /* dw0 */
        __le32 trans_tx_fail_type;

        /* dw1 */
        __le32 trans_rx_fail_type;

        /* dw2 */
        __le16 dma_tx_err_type;
        __le16 sipc_rx_err_type;

        /* dw3 */
        __le32 dma_rx_err_type;
};

enum {
        HISI_SAS_PHY_PHY_UPDOWN,
        HISI_SAS_PHY_CHNL_INT,
        HISI_SAS_PHY_INT_NR
};

enum {
        TRANS_TX_FAIL_BASE = 0x0, /* dw0 */
        TRANS_RX_FAIL_BASE = 0x20, /* dw1 */
        DMA_TX_ERR_BASE = 0x40, /* dw2 bit 15-0 */
        SIPC_RX_ERR_BASE = 0x50, /* dw2 bit 31-16*/
        DMA_RX_ERR_BASE = 0x60, /* dw3 */

        /* trans tx*/
        TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS = TRANS_TX_FAIL_BASE, /* 0x0 */
        TRANS_TX_ERR_PHY_NOT_ENABLE, /* 0x1 */
        TRANS_TX_OPEN_CNX_ERR_WRONG_DESTINATION, /* 0x2 */
        TRANS_TX_OPEN_CNX_ERR_ZONE_VIOLATION, /* 0x3 */
        TRANS_TX_OPEN_CNX_ERR_BY_OTHER, /* 0x4 */
        RESERVED0, /* 0x5 */
        TRANS_TX_OPEN_CNX_ERR_AIP_TIMEOUT, /* 0x6 */
        TRANS_TX_OPEN_CNX_ERR_STP_RESOURCES_BUSY, /* 0x7 */
        TRANS_TX_OPEN_CNX_ERR_PROTOCOL_NOT_SUPPORTED, /* 0x8 */
        TRANS_TX_OPEN_CNX_ERR_CONNECTION_RATE_NOT_SUPPORTED, /* 0x9 */
        TRANS_TX_OPEN_CNX_ERR_BAD_DESTINATION, /* 0xa */
        TRANS_TX_OPEN_CNX_ERR_BREAK_RCVD, /* 0xb */
        TRANS_TX_OPEN_CNX_ERR_LOW_PHY_POWER, /* 0xc */
        TRANS_TX_OPEN_CNX_ERR_PATHWAY_BLOCKED, /* 0xd */
        TRANS_TX_OPEN_CNX_ERR_OPEN_TIMEOUT, /* 0xe */
        TRANS_TX_OPEN_CNX_ERR_NO_DESTINATION, /* 0xf */
        TRANS_TX_OPEN_RETRY_ERR_THRESHOLD_REACHED, /* 0x10 */
        TRANS_TX_ERR_FRAME_TXED, /* 0x11 */
        TRANS_TX_ERR_WITH_BREAK_TIMEOUT, /* 0x12 */
        TRANS_TX_ERR_WITH_BREAK_REQUEST, /* 0x13 */
        TRANS_TX_ERR_WITH_BREAK_RECEVIED, /* 0x14 */
        TRANS_TX_ERR_WITH_CLOSE_TIMEOUT, /* 0x15 */
        TRANS_TX_ERR_WITH_CLOSE_NORMAL, /* 0x16 for ssp*/
        TRANS_TX_ERR_WITH_CLOSE_PHYDISALE, /* 0x17 */
        TRANS_TX_ERR_WITH_CLOSE_DWS_TIMEOUT, /* 0x18 */
        TRANS_TX_ERR_WITH_CLOSE_COMINIT, /* 0x19 */
        TRANS_TX_ERR_WITH_NAK_RECEVIED, /* 0x1a for ssp*/
        TRANS_TX_ERR_WITH_ACK_NAK_TIMEOUT, /* 0x1b for ssp*/
        /*IO_TX_ERR_WITH_R_ERR_RECEVIED, [> 0x1b for sata/stp<] */
        TRANS_TX_ERR_WITH_CREDIT_TIMEOUT, /* 0x1c for ssp */
        /*IO_RX_ERR_WITH_SATA_DEVICE_LOST 0x1c for sata/stp */
        TRANS_TX_ERR_WITH_IPTT_CONFLICT, /* 0x1d for ssp/smp */
        TRANS_TX_ERR_WITH_OPEN_BY_DES_OR_OTHERS, /* 0x1e */
        /*IO_TX_ERR_WITH_SYNC_RXD, [> 0x1e <] for sata/stp */
        TRANS_TX_ERR_WITH_WAIT_RECV_TIMEOUT, /* 0x1f for sata/stp */

        /* trans rx */
        TRANS_RX_ERR_WITH_RXFRAME_CRC_ERR = TRANS_RX_FAIL_BASE, /* 0x20 */
        TRANS_RX_ERR_WITH_RXFIS_8B10B_DISP_ERR, /* 0x21 for sata/stp */
        TRANS_RX_ERR_WITH_RXFRAME_HAVE_ERRPRM, /* 0x22 for ssp/smp */
        /*IO_ERR_WITH_RXFIS_8B10B_CODE_ERR, [> 0x22 <] for sata/stp */
        TRANS_RX_ERR_WITH_RXFIS_DECODE_ERROR, /* 0x23 for sata/stp */
        TRANS_RX_ERR_WITH_RXFIS_CRC_ERR, /* 0x24 for sata/stp */
        TRANS_RX_ERR_WITH_RXFRAME_LENGTH_OVERRUN, /* 0x25 for smp */
        /*IO_ERR_WITH_RXFIS_TX SYNCP, [> 0x25 <] for sata/stp */
        TRANS_RX_ERR_WITH_RXFIS_RX_SYNCP, /* 0x26 for sata/stp*/
        TRANS_RX_ERR_WITH_LINK_BUF_OVERRUN, /* 0x27 */
        TRANS_RX_ERR_WITH_BREAK_TIMEOUT, /* 0x28 */
        TRANS_RX_ERR_WITH_BREAK_REQUEST, /* 0x29 */
        TRANS_RX_ERR_WITH_BREAK_RECEVIED, /* 0x2a */
        RESERVED1, /* 0x2b */
        TRANS_RX_ERR_WITH_CLOSE_NORMAL, /* 0x2c */
        TRANS_RX_ERR_WITH_CLOSE_PHY_DISABLE, /* 0x2d */
        TRANS_RX_ERR_WITH_CLOSE_DWS_TIMEOUT, /* 0x2e */
        TRANS_RX_ERR_WITH_CLOSE_COMINIT, /* 0x2f */
        TRANS_RX_ERR_WITH_DATA_LEN0, /* 0x30 for ssp/smp */
        TRANS_RX_ERR_WITH_BAD_HASH, /* 0x31 for ssp */
        /*IO_RX_ERR_WITH_FIS_TOO_SHORT, [> 0x31 <] for sata/stp */
        TRANS_RX_XRDY_WLEN_ZERO_ERR, /* 0x32 for ssp*/
        /*IO_RX_ERR_WITH_FIS_TOO_LONG, [> 0x32 <] for sata/stp */
        TRANS_RX_SSP_FRM_LEN_ERR, /* 0x33 for ssp */
        /*IO_RX_ERR_WITH_SATA_DEVICE_LOST, [> 0x33 <] for sata */
        RESERVED2, /* 0x34 */
        RESERVED3, /* 0x35 */
        RESERVED4, /* 0x36 */
        RESERVED5, /* 0x37 */
        TRANS_RX_ERR_WITH_BAD_FRM_TYPE, /* 0x38 */
        TRANS_RX_SMP_FRM_LEN_ERR, /* 0x39 */
        TRANS_RX_SMP_RESP_TIMEOUT_ERR, /* 0x3a */
        RESERVED6, /* 0x3b */
        RESERVED7, /* 0x3c */
        RESERVED8, /* 0x3d */
        RESERVED9, /* 0x3e */
        TRANS_RX_R_ERR, /* 0x3f */

        /* dma tx */
        DMA_TX_DIF_CRC_ERR = DMA_TX_ERR_BASE, /* 0x40 */
        DMA_TX_DIF_APP_ERR, /* 0x41 */
        DMA_TX_DIF_RPP_ERR, /* 0x42 */
        DMA_TX_DATA_SGL_OVERFLOW, /* 0x43 */
        DMA_TX_DIF_SGL_OVERFLOW, /* 0x44 */
        DMA_TX_UNEXP_XFER_ERR, /* 0x45 */
        DMA_TX_UNEXP_RETRANS_ERR, /* 0x46 */
        DMA_TX_XFER_LEN_OVERFLOW, /* 0x47 */
        DMA_TX_XFER_OFFSET_ERR, /* 0x48 */
        DMA_TX_RAM_ECC_ERR, /* 0x49 */
        DMA_TX_DIF_LEN_ALIGN_ERR, /* 0x4a */
        DMA_TX_MAX_ERR_CODE,

        /* sipc rx */
        SIPC_RX_FIS_STATUS_ERR_BIT_VLD = SIPC_RX_ERR_BASE, /* 0x50 */
        SIPC_RX_PIO_WRSETUP_STATUS_DRQ_ERR, /* 0x51 */
        SIPC_RX_FIS_STATUS_BSY_BIT_ERR, /* 0x52 */
        SIPC_RX_WRSETUP_LEN_ODD_ERR, /* 0x53 */
        SIPC_RX_WRSETUP_LEN_ZERO_ERR, /* 0x54 */
        SIPC_RX_WRDATA_LEN_NOT_MATCH_ERR, /* 0x55 */
        SIPC_RX_NCQ_WRSETUP_OFFSET_ERR, /* 0x56 */
        SIPC_RX_NCQ_WRSETUP_AUTO_ACTIVE_ERR, /* 0x57 */
        SIPC_RX_SATA_UNEXP_FIS_ERR, /* 0x58 */
        SIPC_RX_WRSETUP_ESTATUS_ERR, /* 0x59 */
        SIPC_RX_DATA_UNDERFLOW_ERR, /* 0x5a */
        SIPC_RX_MAX_ERR_CODE,

        /* dma rx */
        DMA_RX_DIF_CRC_ERR = DMA_RX_ERR_BASE, /* 0x60 */
        DMA_RX_DIF_APP_ERR, /* 0x61 */
        DMA_RX_DIF_RPP_ERR, /* 0x62 */
        DMA_RX_DATA_SGL_OVERFLOW, /* 0x63 */
        DMA_RX_DIF_SGL_OVERFLOW, /* 0x64 */
        DMA_RX_DATA_LEN_OVERFLOW, /* 0x65 */
        DMA_RX_DATA_LEN_UNDERFLOW, /* 0x66 */
        DMA_RX_DATA_OFFSET_ERR, /* 0x67 */
        RESERVED10, /* 0x68 */
        DMA_RX_SATA_FRAME_TYPE_ERR, /* 0x69 */
        DMA_RX_RESP_BUF_OVERFLOW, /* 0x6a */
        DMA_RX_UNEXP_RETRANS_RESP_ERR, /* 0x6b */
        DMA_RX_UNEXP_NORM_RESP_ERR, /* 0x6c */
        DMA_RX_UNEXP_RDFRAME_ERR, /* 0x6d */
        DMA_RX_PIO_DATA_LEN_ERR, /* 0x6e */
        DMA_RX_RDSETUP_STATUS_ERR, /* 0x6f */
        DMA_RX_RDSETUP_STATUS_DRQ_ERR, /* 0x70 */
        DMA_RX_RDSETUP_STATUS_BSY_ERR, /* 0x71 */
        DMA_RX_RDSETUP_LEN_ODD_ERR, /* 0x72 */
        DMA_RX_RDSETUP_LEN_ZERO_ERR, /* 0x73 */
        DMA_RX_RDSETUP_LEN_OVER_ERR, /* 0x74 */
        DMA_RX_RDSETUP_OFFSET_ERR, /* 0x75 */
        DMA_RX_RDSETUP_ACTIVE_ERR, /* 0x76 */
        DMA_RX_RDSETUP_ESTATUS_ERR, /* 0x77 */
        DMA_RX_RAM_ECC_ERR, /* 0x78 */
        DMA_RX_UNKNOWN_FRM_ERR, /* 0x79 */
        DMA_RX_MAX_ERR_CODE,
};

#define HISI_SAS_COMMAND_ENTRIES_V2_HW 4096
#define HISI_MAX_SATA_SUPPORT_V2_HW     (HISI_SAS_COMMAND_ENTRIES_V2_HW/64 - 1)

#define DIR_NO_DATA 0
#define DIR_TO_INI 1
#define DIR_TO_DEVICE 2
#define DIR_RESERVED 3

#define SATA_PROTOCOL_NONDATA           0x1
#define SATA_PROTOCOL_PIO               0x2
#define SATA_PROTOCOL_DMA               0x4
#define SATA_PROTOCOL_FPDMA             0x8
#define SATA_PROTOCOL_ATAPI             0x10

#define ERR_ON_TX_PHASE(err_phase) (err_phase == 0x2 || \
                err_phase == 0x4 || err_phase == 0x8 ||\
                err_phase == 0x6 || err_phase == 0xa)
#define ERR_ON_RX_PHASE(err_phase) (err_phase == 0x10 || \
                err_phase == 0x20 || err_phase == 0x40)

static void link_timeout_disable_link(unsigned long data);

static u32 hisi_sas_read32(struct hisi_hba *hisi_hba, u32 off)
{
        void __iomem *regs = hisi_hba->regs + off;

        return readl(regs);
}

static u32 hisi_sas_read32_relaxed(struct hisi_hba *hisi_hba, u32 off)
{
        void __iomem *regs = hisi_hba->regs + off;

        return readl_relaxed(regs);
}

static void hisi_sas_write32(struct hisi_hba *hisi_hba, u32 off, u32 val)
{
        void __iomem *regs = hisi_hba->regs + off;

        writel(val, regs);
}

static void hisi_sas_phy_write32(struct hisi_hba *hisi_hba, int phy_no,
                                 u32 off, u32 val)
{
        void __iomem *regs = hisi_hba->regs + (0x400 * phy_no) + off;

        writel(val, regs);
}

static u32 hisi_sas_phy_read32(struct hisi_hba *hisi_hba,
                                      int phy_no, u32 off)
{
        void __iomem *regs = hisi_hba->regs + (0x400 * phy_no) + off;

        return readl(regs);
}

/* This function needs to be protected from pre-emption. */
static int
slot_index_alloc_quirk_v2_hw(struct hisi_hba *hisi_hba, int *slot_idx,
                             struct domain_device *device)
{
        int sata_dev = dev_is_sata(device);
        void *bitmap = hisi_hba->slot_index_tags;
        struct hisi_sas_device *sas_dev = device->lldd_dev;
        int sata_idx = sas_dev->sata_idx;
        int start, end;

        if (!sata_dev) {
                /*
                 * STP link SoC bug workaround: index starts from 1.
                 * additionally, we can only allocate odd IPTT(1~4095)
                 * for SAS/SMP device.
                 */
                start = 1;
                end = hisi_hba->slot_index_count;
        } else {
                if (sata_idx >= HISI_MAX_SATA_SUPPORT_V2_HW)
                        return -EINVAL;

                /*
                 * For SATA device: allocate even IPTT in this interval
                 * [64*(sata_idx+1), 64*(sata_idx+2)], then each SATA device
                 * own 32 IPTTs. IPTT 0 shall not be used duing to STP link
                 * SoC bug workaround. So we ignore the first 32 even IPTTs.
                 */
                start = 64 * (sata_idx + 1);
                end = 64 * (sata_idx + 2);
        }

        while (1) {
                start = find_next_zero_bit(bitmap,
                                        hisi_hba->slot_index_count, start);
                if (start >= end)
                        return -SAS_QUEUE_FULL;
                /*
                  * SAS IPTT bit0 should be 1, and SATA IPTT bit0 should be 0.
                  */
                if (sata_dev ^ (start & 1))
                        break;
                start++;
        }

        set_bit(start, bitmap);
        *slot_idx = start;
        return 0;
}

static bool sata_index_alloc_v2_hw(struct hisi_hba *hisi_hba, int *idx)
{
        unsigned int index;
        struct device *dev = &hisi_hba->pdev->dev;
        void *bitmap = hisi_hba->sata_dev_bitmap;

        index = find_first_zero_bit(bitmap, HISI_MAX_SATA_SUPPORT_V2_HW);
        if (index >= HISI_MAX_SATA_SUPPORT_V2_HW) {
                dev_warn(dev, "alloc sata index failed, index=%d\n", index);
                return false;
        }

        set_bit(index, bitmap);
        *idx = index;
        return true;
}


static struct
hisi_sas_device *alloc_dev_quirk_v2_hw(struct domain_device *device)
{
        struct hisi_hba *hisi_hba = device->port->ha->lldd_ha;
        struct hisi_sas_device *sas_dev = NULL;
        int i, sata_dev = dev_is_sata(device);
        int sata_idx = -1;

        spin_lock(&hisi_hba->lock);

        if (sata_dev)
                if (!sata_index_alloc_v2_hw(hisi_hba, &sata_idx))
                        goto out;

        for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
                /*
                 * SATA device id bit0 should be 0
                 */
                if (sata_dev && (i & 1))
                        continue;
                if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
                        hisi_hba->devices[i].device_id = i;
                        sas_dev = &hisi_hba->devices[i];
                        sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
                        sas_dev->dev_type = device->dev_type;
                        sas_dev->hisi_hba = hisi_hba;
                        sas_dev->sas_device = device;
                        sas_dev->sata_idx = sata_idx;
                        INIT_LIST_HEAD(&hisi_hba->devices[i].list);
                        break;
                }
        }

out:
        spin_unlock(&hisi_hba->lock);

        return sas_dev;
}

static void config_phy_opt_mode_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);

        cfg &= ~PHY_CFG_DC_OPT_MSK;
        cfg |= 1 << PHY_CFG_DC_OPT_OFF;
        hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
}

static void config_id_frame_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        struct sas_identify_frame identify_frame;
        u32 *identify_buffer;

        memset(&identify_frame, 0, sizeof(identify_frame));
        identify_frame.dev_type = SAS_END_DEVICE;
        identify_frame.frame_type = 0;
        identify_frame._un1 = 1;
        identify_frame.initiator_bits = SAS_PROTOCOL_ALL;
        identify_frame.target_bits = SAS_PROTOCOL_NONE;
        memcpy(&identify_frame._un4_11[0], hisi_hba->sas_addr, SAS_ADDR_SIZE);
        memcpy(&identify_frame.sas_addr[0], hisi_hba->sas_addr, SAS_ADDR_SIZE);
        identify_frame.phy_id = phy_no;
        identify_buffer = (u32 *)(&identify_frame);

        hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD0,
                        __swab32(identify_buffer[0]));
        hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD1,
                        __swab32(identify_buffer[1]));
        hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD2,
                        __swab32(identify_buffer[2]));
        hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD3,
                        __swab32(identify_buffer[3]));
        hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD4,
                        __swab32(identify_buffer[4]));
        hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD5,
                        __swab32(identify_buffer[5]));
}

static void setup_itct_v2_hw(struct hisi_hba *hisi_hba,
                             struct hisi_sas_device *sas_dev)
{
        struct domain_device *device = sas_dev->sas_device;
        struct device *dev = &hisi_hba->pdev->dev;
        u64 qw0, device_id = sas_dev->device_id;
        struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
        struct domain_device *parent_dev = device->parent;
        struct asd_sas_port *sas_port = device->port;
        struct hisi_sas_port *port = to_hisi_sas_port(sas_port);

        memset(itct, 0, sizeof(*itct));

        /* qw0 */
        qw0 = 0;
        switch (sas_dev->dev_type) {
        case SAS_END_DEVICE:
        case SAS_EDGE_EXPANDER_DEVICE:
        case SAS_FANOUT_EXPANDER_DEVICE:
                qw0 = HISI_SAS_DEV_TYPE_SSP << ITCT_HDR_DEV_TYPE_OFF;
                break;
        case SAS_SATA_DEV:
        case SAS_SATA_PENDING:
                if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
                        qw0 = HISI_SAS_DEV_TYPE_STP << ITCT_HDR_DEV_TYPE_OFF;
                else
                        qw0 = HISI_SAS_DEV_TYPE_SATA << ITCT_HDR_DEV_TYPE_OFF;
                break;
        default:
                dev_warn(dev, "setup itct: unsupported dev type (%d)\n",
                         sas_dev->dev_type);
        }

        qw0 |= ((1 << ITCT_HDR_VALID_OFF) |
                (device->linkrate << ITCT_HDR_MCR_OFF) |
                (1 << ITCT_HDR_VLN_OFF) |
                (ITCT_HDR_SMP_TIMEOUT << ITCT_HDR_SMP_TIMEOUT_OFF) |
                (1 << ITCT_HDR_AWT_CONTINUE_OFF) |
                (port->id << ITCT_HDR_PORT_ID_OFF));
        itct->qw0 = cpu_to_le64(qw0);

        /* qw1 */
        memcpy(&itct->sas_addr, device->sas_addr, SAS_ADDR_SIZE);
        itct->sas_addr = __swab64(itct->sas_addr);

        /* qw2 */
        if (!dev_is_sata(device))
                itct->qw2 = cpu_to_le64((5000ULL << ITCT_HDR_INLT_OFF) |
                                        (0x1ULL << ITCT_HDR_BITLT_OFF) |
                                        (0x32ULL << ITCT_HDR_MCTLT_OFF) |
                                        (0x1ULL << ITCT_HDR_RTOLT_OFF));
}

static void free_device_v2_hw(struct hisi_hba *hisi_hba,
                              struct hisi_sas_device *sas_dev)
{
        u64 dev_id = sas_dev->device_id;
        struct device *dev = &hisi_hba->pdev->dev;
        struct hisi_sas_itct *itct = &hisi_hba->itct[dev_id];
        u32 reg_val = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
        int i;

        /* SoC bug workaround */
        if (dev_is_sata(sas_dev->sas_device))
                clear_bit(sas_dev->sata_idx, hisi_hba->sata_dev_bitmap);

        /* clear the itct interrupt state */
        if (ENT_INT_SRC3_ITC_INT_MSK & reg_val)
                hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                 ENT_INT_SRC3_ITC_INT_MSK);

        /* clear the itct int*/
        for (i = 0; i < 2; i++) {
                /* clear the itct table*/
                reg_val = hisi_sas_read32(hisi_hba, ITCT_CLR);
                reg_val |= ITCT_CLR_EN_MSK | (dev_id & ITCT_DEV_MSK);
                hisi_sas_write32(hisi_hba, ITCT_CLR, reg_val);

                udelay(10);
                reg_val = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
                if (ENT_INT_SRC3_ITC_INT_MSK & reg_val) {
                        dev_dbg(dev, "got clear ITCT done interrupt\n");

                        /* invalid the itct state*/
                        memset(itct, 0, sizeof(struct hisi_sas_itct));
                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                         ENT_INT_SRC3_ITC_INT_MSK);

                        /* clear the itct */
                        hisi_sas_write32(hisi_hba, ITCT_CLR, 0);
                        dev_dbg(dev, "clear ITCT ok\n");
                        break;
                }
        }
}

static int reset_hw_v2_hw(struct hisi_hba *hisi_hba)
{
        int i, reset_val;
        u32 val;
        unsigned long end_time;
        struct device *dev = &hisi_hba->pdev->dev;

        /* The mask needs to be set depending on the number of phys */
        if (hisi_hba->n_phy == 9)
                reset_val = 0x1fffff;
        else
                reset_val = 0x7ffff;

        hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0);

        /* Disable all of the PHYs */
        for (i = 0; i < hisi_hba->n_phy; i++) {
                u32 phy_cfg = hisi_sas_phy_read32(hisi_hba, i, PHY_CFG);

                phy_cfg &= ~PHY_CTRL_RESET_MSK;
                hisi_sas_phy_write32(hisi_hba, i, PHY_CFG, phy_cfg);
        }
        udelay(50);

        /* Ensure DMA tx & rx idle */
        for (i = 0; i < hisi_hba->n_phy; i++) {
                u32 dma_tx_status, dma_rx_status;

                end_time = jiffies + msecs_to_jiffies(1000);

                while (1) {
                        dma_tx_status = hisi_sas_phy_read32(hisi_hba, i,
                                                            DMA_TX_STATUS);
                        dma_rx_status = hisi_sas_phy_read32(hisi_hba, i,
                                                            DMA_RX_STATUS);

                        if (!(dma_tx_status & DMA_TX_STATUS_BUSY_MSK) &&
                                !(dma_rx_status & DMA_RX_STATUS_BUSY_MSK))
                                break;

                        msleep(20);
                        if (time_after(jiffies, end_time))
                                return -EIO;
                }
        }

        /* Ensure axi bus idle */
        end_time = jiffies + msecs_to_jiffies(1000);
        while (1) {
                u32 axi_status =
                        hisi_sas_read32(hisi_hba, AXI_CFG);

                if (axi_status == 0)
                        break;

                msleep(20);
                if (time_after(jiffies, end_time))
                        return -EIO;
        }

        if (ACPI_HANDLE(dev)) {
                acpi_status s;

                s = acpi_evaluate_object(ACPI_HANDLE(dev), "_RST", NULL, NULL);
                if (ACPI_FAILURE(s)) {
                        dev_err(dev, "Reset failed\n");
                        return -EIO;
                }
        } else if (hisi_hba->ctrl) {
                /* reset and disable clock*/
                regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_reset_reg,
                                reset_val);
                regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_clock_ena_reg + 4,
                                reset_val);
                msleep(1);
                regmap_read(hisi_hba->ctrl, hisi_hba->ctrl_reset_sts_reg, &val);
                if (reset_val != (val & reset_val)) {
                        dev_err(dev, "SAS reset fail.\n");
                        return -EIO;
                }

                /* De-reset and enable clock*/
                regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_reset_reg + 4,
                                reset_val);
                regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_clock_ena_reg,
                                reset_val);
                msleep(1);
                regmap_read(hisi_hba->ctrl, hisi_hba->ctrl_reset_sts_reg,
                                &val);
                if (val & reset_val) {
                        dev_err(dev, "SAS de-reset fail.\n");
                        return -EIO;
                }
        } else
                dev_warn(dev, "no reset method\n");

        return 0;
}

/* This function needs to be called after resetting SAS controller. */
static void phys_reject_stp_links_v2_hw(struct hisi_hba *hisi_hba)
{
        u32 cfg;
        int phy_no;

        hisi_hba->reject_stp_links_msk = (1 << hisi_hba->n_phy) - 1;
        for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
                cfg = hisi_sas_phy_read32(hisi_hba, phy_no, CON_CONTROL);
                if (!(cfg & CON_CONTROL_CFG_OPEN_ACC_STP_MSK))
                        continue;

                cfg &= ~CON_CONTROL_CFG_OPEN_ACC_STP_MSK;
                hisi_sas_phy_write32(hisi_hba, phy_no, CON_CONTROL, cfg);
        }
}

static void phys_try_accept_stp_links_v2_hw(struct hisi_hba *hisi_hba)
{
        int phy_no;
        u32 dma_tx_dfx1;

        for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
                if (!(hisi_hba->reject_stp_links_msk & BIT(phy_no)))
                        continue;

                dma_tx_dfx1 = hisi_sas_phy_read32(hisi_hba, phy_no,
                                                DMA_TX_DFX1);
                if (dma_tx_dfx1 & DMA_TX_DFX1_IPTT_MSK) {
                        u32 cfg = hisi_sas_phy_read32(hisi_hba,
                                phy_no, CON_CONTROL);

                        cfg |= CON_CONTROL_CFG_OPEN_ACC_STP_MSK;
                        hisi_sas_phy_write32(hisi_hba, phy_no,
                                CON_CONTROL, cfg);
                        clear_bit(phy_no, &hisi_hba->reject_stp_links_msk);
                }
        }
}

static void init_reg_v2_hw(struct hisi_hba *hisi_hba)
{
        struct device *dev = &hisi_hba->pdev->dev;
        int i;

        /* Global registers init */

        /* Deal with am-max-transmissions quirk */
        if (device_property_present(dev, "hip06-sas-v2-quirk-amt")) {
                hisi_sas_write32(hisi_hba, AM_CFG_MAX_TRANS, 0x2020);
                hisi_sas_write32(hisi_hba, AM_CFG_SINGLE_PORT_MAX_TRANS,
                                 0x2020);
        } /* Else, use defaults -> do nothing */

        hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE,
                         (u32)((1ULL << hisi_hba->queue_count) - 1));
        hisi_sas_write32(hisi_hba, AXI_USER1, 0xc0000000);
        hisi_sas_write32(hisi_hba, AXI_USER2, 0x10000);
        hisi_sas_write32(hisi_hba, HGC_SAS_TXFAIL_RETRY_CTRL, 0x0);
        hisi_sas_write32(hisi_hba, HGC_SAS_TX_OPEN_FAIL_RETRY_CTRL, 0x7FF);
        hisi_sas_write32(hisi_hba, OPENA_WT_CONTI_TIME, 0x1);
        hisi_sas_write32(hisi_hba, I_T_NEXUS_LOSS_TIME, 0x1F4);
        hisi_sas_write32(hisi_hba, MAX_CON_TIME_LIMIT_TIME, 0x32);
        hisi_sas_write32(hisi_hba, BUS_INACTIVE_LIMIT_TIME, 0x1);
        hisi_sas_write32(hisi_hba, CFG_AGING_TIME, 0x1);
        hisi_sas_write32(hisi_hba, HGC_ERR_STAT_EN, 0x1);
        hisi_sas_write32(hisi_hba, HGC_GET_ITV_TIME, 0x1);
        hisi_sas_write32(hisi_hba, INT_COAL_EN, 0xc);
        hisi_sas_write32(hisi_hba, OQ_INT_COAL_TIME, 0x60);
        hisi_sas_write32(hisi_hba, OQ_INT_COAL_CNT, 0x3);
        hisi_sas_write32(hisi_hba, ENT_INT_COAL_TIME, 0x1);
        hisi_sas_write32(hisi_hba, ENT_INT_COAL_CNT, 0x1);
        hisi_sas_write32(hisi_hba, OQ_INT_SRC, 0x0);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC1, 0xffffffff);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC2, 0xffffffff);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC3, 0xffffffff);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1, 0x7efefefe);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK2, 0x7efefefe);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, 0x7ffffffe);
        hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0xfff00c30);
        for (i = 0; i < hisi_hba->queue_count; i++)
                hisi_sas_write32(hisi_hba, OQ0_INT_SRC_MSK+0x4*i, 0);

        hisi_sas_write32(hisi_hba, AXI_AHB_CLK_CFG, 1);
        hisi_sas_write32(hisi_hba, HYPER_STREAM_ID_EN_CFG, 1);

        for (i = 0; i < hisi_hba->n_phy; i++) {
                hisi_sas_phy_write32(hisi_hba, i, PROG_PHY_LINK_RATE, 0x855);
                hisi_sas_phy_write32(hisi_hba, i, SAS_PHY_CTRL, 0x30b9908);
                hisi_sas_phy_write32(hisi_hba, i, SL_TOUT_CFG, 0x7d7d7d7d);
                hisi_sas_phy_write32(hisi_hba, i, SL_CONTROL, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, TXID_AUTO, 0x2);
                hisi_sas_phy_write32(hisi_hba, i, DONE_RECEIVED_TIME, 0x8);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT0, 0xffffffff);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT1, 0xffffffff);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT2, 0xfff87fff);
                hisi_sas_phy_write32(hisi_hba, i, RXOP_CHECK_CFG_H, 0x1000);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK, 0xffffffff);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0x8ffffbff);
                hisi_sas_phy_write32(hisi_hba, i, SL_CFG, 0x13f801fc);
                hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL_RDY_MSK, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_NOT_RDY_MSK, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_DWS_RESET_MSK, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_PHY_ENA_MSK, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, SL_RX_BCAST_CHK_MSK, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT_COAL_EN, 0x0);
                hisi_sas_phy_write32(hisi_hba, i, PHYCTRL_OOB_RESTART_MSK, 0x0);
                if (hisi_hba->refclk_frequency_mhz == 66)
                        hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL, 0x199B694);
                /* else, do nothing -> leave it how you found it */
        }

        for (i = 0; i < hisi_hba->queue_count; i++) {
                /* Delivery queue */
                hisi_sas_write32(hisi_hba,
                                 DLVRY_Q_0_BASE_ADDR_HI + (i * 0x14),
                                 upper_32_bits(hisi_hba->cmd_hdr_dma[i]));

                hisi_sas_write32(hisi_hba, DLVRY_Q_0_BASE_ADDR_LO + (i * 0x14),
                                 lower_32_bits(hisi_hba->cmd_hdr_dma[i]));

                hisi_sas_write32(hisi_hba, DLVRY_Q_0_DEPTH + (i * 0x14),
                                 HISI_SAS_QUEUE_SLOTS);

                /* Completion queue */
                hisi_sas_write32(hisi_hba, COMPL_Q_0_BASE_ADDR_HI + (i * 0x14),
                                 upper_32_bits(hisi_hba->complete_hdr_dma[i]));

                hisi_sas_write32(hisi_hba, COMPL_Q_0_BASE_ADDR_LO + (i * 0x14),
                                 lower_32_bits(hisi_hba->complete_hdr_dma[i]));

                hisi_sas_write32(hisi_hba, COMPL_Q_0_DEPTH + (i * 0x14),
                                 HISI_SAS_QUEUE_SLOTS);
        }

        /* itct */
        hisi_sas_write32(hisi_hba, ITCT_BASE_ADDR_LO,
                         lower_32_bits(hisi_hba->itct_dma));

        hisi_sas_write32(hisi_hba, ITCT_BASE_ADDR_HI,
                         upper_32_bits(hisi_hba->itct_dma));

        /* iost */
        hisi_sas_write32(hisi_hba, IOST_BASE_ADDR_LO,
                         lower_32_bits(hisi_hba->iost_dma));

        hisi_sas_write32(hisi_hba, IOST_BASE_ADDR_HI,
                         upper_32_bits(hisi_hba->iost_dma));

        /* breakpoint */
        hisi_sas_write32(hisi_hba, IO_BROKEN_MSG_ADDR_LO,
                         lower_32_bits(hisi_hba->breakpoint_dma));

        hisi_sas_write32(hisi_hba, IO_BROKEN_MSG_ADDR_HI,
                         upper_32_bits(hisi_hba->breakpoint_dma));

        /* SATA broken msg */
        hisi_sas_write32(hisi_hba, IO_SATA_BROKEN_MSG_ADDR_LO,
                         lower_32_bits(hisi_hba->sata_breakpoint_dma));

        hisi_sas_write32(hisi_hba, IO_SATA_BROKEN_MSG_ADDR_HI,
                         upper_32_bits(hisi_hba->sata_breakpoint_dma));

        /* SATA initial fis */
        hisi_sas_write32(hisi_hba, SATA_INITI_D2H_STORE_ADDR_LO,
                         lower_32_bits(hisi_hba->initial_fis_dma));

        hisi_sas_write32(hisi_hba, SATA_INITI_D2H_STORE_ADDR_HI,
                         upper_32_bits(hisi_hba->initial_fis_dma));
}

static void link_timeout_enable_link(unsigned long data)
{
        struct hisi_hba *hisi_hba = (struct hisi_hba *)data;
        int i, reg_val;

        for (i = 0; i < hisi_hba->n_phy; i++) {
                if (hisi_hba->reject_stp_links_msk & BIT(i))
                        continue;

                reg_val = hisi_sas_phy_read32(hisi_hba, i, CON_CONTROL);
                if (!(reg_val & BIT(0))) {
                        hisi_sas_phy_write32(hisi_hba, i,
                                        CON_CONTROL, 0x7);
                        break;
                }
        }

        hisi_hba->timer.function = link_timeout_disable_link;
        mod_timer(&hisi_hba->timer, jiffies + msecs_to_jiffies(900));
}

static void link_timeout_disable_link(unsigned long data)
{
        struct hisi_hba *hisi_hba = (struct hisi_hba *)data;
        int i, reg_val;

        reg_val = hisi_sas_read32(hisi_hba, PHY_STATE);
        for (i = 0; i < hisi_hba->n_phy && reg_val; i++) {
                if (hisi_hba->reject_stp_links_msk & BIT(i))
                        continue;

                if (reg_val & BIT(i)) {
                        hisi_sas_phy_write32(hisi_hba, i,
                                        CON_CONTROL, 0x6);
                        break;
                }
        }

        hisi_hba->timer.function = link_timeout_enable_link;
        mod_timer(&hisi_hba->timer, jiffies + msecs_to_jiffies(100));
}

static void set_link_timer_quirk(struct hisi_hba *hisi_hba)
{
        hisi_hba->timer.data = (unsigned long)hisi_hba;
        hisi_hba->timer.function = link_timeout_disable_link;
        hisi_hba->timer.expires = jiffies + msecs_to_jiffies(1000);
        add_timer(&hisi_hba->timer);
}

static int hw_init_v2_hw(struct hisi_hba *hisi_hba)
{
        struct device *dev = &hisi_hba->pdev->dev;
        int rc;

        rc = reset_hw_v2_hw(hisi_hba);
        if (rc) {
                dev_err(dev, "hisi_sas_reset_hw failed, rc=%d", rc);
                return rc;
        }

        msleep(100);
        init_reg_v2_hw(hisi_hba);

        return 0;
}

static void enable_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);

        cfg |= PHY_CFG_ENA_MSK;
        hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
}

static bool is_sata_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        u32 context;

        context = hisi_sas_read32(hisi_hba, PHY_CONTEXT);
        if (context & (1 << phy_no))
                return true;

        return false;
}

static bool tx_fifo_is_empty_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        u32 dfx_val;

        dfx_val = hisi_sas_phy_read32(hisi_hba, phy_no, DMA_TX_DFX1);

        if (dfx_val & BIT(16))
                return false;

        return true;
}

static bool axi_bus_is_idle_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        int i, max_loop = 1000;
        struct device *dev = &hisi_hba->pdev->dev;
        u32 status, axi_status, dfx_val, dfx_tx_val;

        for (i = 0; i < max_loop; i++) {
                status = hisi_sas_read32_relaxed(hisi_hba,
                        AXI_MASTER_CFG_BASE + AM_CURR_TRANS_RETURN);

                axi_status = hisi_sas_read32(hisi_hba, AXI_CFG);
                dfx_val = hisi_sas_phy_read32(hisi_hba, phy_no, DMA_TX_DFX1);
                dfx_tx_val = hisi_sas_phy_read32(hisi_hba,
                        phy_no, DMA_TX_FIFO_DFX0);

                if ((status == 0x3) && (axi_status == 0x0) &&
                    (dfx_val & BIT(20)) && (dfx_tx_val & BIT(10)))
                        return true;
                udelay(10);
        }
        dev_err(dev, "bus is not idle phy%d, axi150:0x%x axi100:0x%x port204:0x%x port240:0x%x\n",
                        phy_no, status, axi_status,
                        dfx_val, dfx_tx_val);
        return false;
}

static bool wait_io_done_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        int i, max_loop = 1000;
        struct device *dev = &hisi_hba->pdev->dev;
        u32 status, tx_dfx0;

        for (i = 0; i < max_loop; i++) {
                status = hisi_sas_phy_read32(hisi_hba, phy_no, LINK_DFX2);
                status = (status & 0x3fc0) >> 6;

                if (status != 0x1)
                        return true;

                tx_dfx0 = hisi_sas_phy_read32(hisi_hba, phy_no, DMA_TX_DFX0);
                if ((tx_dfx0 & 0x1ff) == 0x2)
                        return true;
                udelay(10);
        }
        dev_err(dev, "IO not done phy%d, port264:0x%x port200:0x%x\n",
                        phy_no, status, tx_dfx0);
        return false;
}

static bool allowed_disable_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        if (tx_fifo_is_empty_v2_hw(hisi_hba, phy_no))
                return true;

        if (!axi_bus_is_idle_v2_hw(hisi_hba, phy_no))
                return false;

        if (!wait_io_done_v2_hw(hisi_hba, phy_no))
                return false;

        return true;
}


static void disable_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        u32 cfg, axi_val, dfx0_val, txid_auto;
        struct device *dev = &hisi_hba->pdev->dev;

        /* Close axi bus. */
        axi_val = hisi_sas_read32(hisi_hba, AXI_MASTER_CFG_BASE +
                                AM_CTRL_GLOBAL);
        axi_val |= 0x1;
        hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE +
                AM_CTRL_GLOBAL, axi_val);

        if (is_sata_phy_v2_hw(hisi_hba, phy_no)) {
                if (allowed_disable_phy_v2_hw(hisi_hba, phy_no))
                        goto do_disable;

                /* Reset host controller. */
                queue_work(hisi_hba->wq, &hisi_hba->rst_work);
                return;
        }

        dfx0_val = hisi_sas_phy_read32(hisi_hba, phy_no, PORT_DFX0);
        dfx0_val = (dfx0_val & 0x1fc0) >> 6;
        if (dfx0_val != 0x4)
                goto do_disable;

        if (!tx_fifo_is_empty_v2_hw(hisi_hba, phy_no)) {
                dev_warn(dev, "phy%d, wait tx fifo need send break\n",
                        phy_no);
                txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no,
                                        TXID_AUTO);
                txid_auto |= TXID_AUTO_CTB_MSK;
                hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,
                                        txid_auto);
        }

do_disable:
        cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);
        cfg &= ~PHY_CFG_ENA_MSK;
        hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);

        /* Open axi bus. */
        axi_val &= ~0x1;
        hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE +
                AM_CTRL_GLOBAL, axi_val);
}

static void start_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        config_id_frame_v2_hw(hisi_hba, phy_no);
        config_phy_opt_mode_v2_hw(hisi_hba, phy_no);
        enable_phy_v2_hw(hisi_hba, phy_no);
}

static void stop_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        disable_phy_v2_hw(hisi_hba, phy_no);
}

static void stop_phys_v2_hw(struct hisi_hba *hisi_hba)
{
        int i;

        for (i = 0; i < hisi_hba->n_phy; i++)
                stop_phy_v2_hw(hisi_hba, i);
}

static void phy_hard_reset_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
        u32 txid_auto;

        stop_phy_v2_hw(hisi_hba, phy_no);
        if (phy->identify.device_type == SAS_END_DEVICE) {
                txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO);
                hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,
                                        txid_auto | TX_HARDRST_MSK);
        }
        msleep(100);
        start_phy_v2_hw(hisi_hba, phy_no);
}

static void start_phys_v2_hw(struct hisi_hba *hisi_hba)
{
        int i;

        for (i = 0; i < hisi_hba->n_phy; i++)
                start_phy_v2_hw(hisi_hba, i);
}

static void phys_init_v2_hw(struct hisi_hba *hisi_hba)
{
        start_phys_v2_hw(hisi_hba);
}

static void sl_notify_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
{
        u32 sl_control;

        sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
        sl_control |= SL_CONTROL_NOTIFY_EN_MSK;
        hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
        msleep(1);
        sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
        sl_control &= ~SL_CONTROL_NOTIFY_EN_MSK;
        hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
}

static enum sas_linkrate phy_get_max_linkrate_v2_hw(void)
{
        return SAS_LINK_RATE_12_0_GBPS;
}

static void phy_set_linkrate_v2_hw(struct hisi_hba *hisi_hba, int phy_no,
                struct sas_phy_linkrates *r)
{
        u32 prog_phy_link_rate =
                hisi_sas_phy_read32(hisi_hba, phy_no, PROG_PHY_LINK_RATE);
        struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
        struct asd_sas_phy *sas_phy = &phy->sas_phy;
        int i;
        enum sas_linkrate min, max;
        u32 rate_mask = 0;

        if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
                max = sas_phy->phy->maximum_linkrate;
                min = r->minimum_linkrate;
        } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
                max = r->maximum_linkrate;
                min = sas_phy->phy->minimum_linkrate;
        } else
                return;

        sas_phy->phy->maximum_linkrate = max;
        sas_phy->phy->minimum_linkrate = min;

        min -= SAS_LINK_RATE_1_5_GBPS;
        max -= SAS_LINK_RATE_1_5_GBPS;

        for (i = 0; i <= max; i++)
                rate_mask |= 1 << (i * 2);

        prog_phy_link_rate &= ~0xff;
        prog_phy_link_rate |= rate_mask;

        hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE,
                        prog_phy_link_rate);

        phy_hard_reset_v2_hw(hisi_hba, phy_no);
}

static int get_wideport_bitmap_v2_hw(struct hisi_hba *hisi_hba, int port_id)
{
        int i, bitmap = 0;
        u32 phy_port_num_ma = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
        u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);

        for (i = 0; i < (hisi_hba->n_phy < 9 ? hisi_hba->n_phy : 8); i++)
                if (phy_state & 1 << i)
                        if (((phy_port_num_ma >> (i * 4)) & 0xf) == port_id)
                                bitmap |= 1 << i;

        if (hisi_hba->n_phy == 9) {
                u32 port_state = hisi_sas_read32(hisi_hba, PORT_STATE);

                if (phy_state & 1 << 8)
                        if (((port_state & PORT_STATE_PHY8_PORT_NUM_MSK) >>
                             PORT_STATE_PHY8_PORT_NUM_OFF) == port_id)
                                bitmap |= 1 << 9;
        }

        return bitmap;
}

/**
 * This function allocates across all queues to load balance.
 * Slots are allocated from queues in a round-robin fashion.
 *
 * The callpath to this function and upto writing the write
 * queue pointer should be safe from interruption.
 */
static int get_free_slot_v2_hw(struct hisi_hba *hisi_hba, u32 dev_id,
                                int *q, int *s)
{
        struct device *dev = &hisi_hba->pdev->dev;
        struct hisi_sas_dq *dq;
        u32 r, w;
        int queue = dev_id % hisi_hba->queue_count;

        dq = &hisi_hba->dq[queue];
        w = dq->wr_point;
        r = hisi_sas_read32_relaxed(hisi_hba,
                                DLVRY_Q_0_RD_PTR + (queue * 0x14));
        if (r == (w+1) % HISI_SAS_QUEUE_SLOTS) {
                dev_warn(dev, "full queue=%d r=%d w=%d\n\n",
                                queue, r, w);
                return -EAGAIN;
        }

        *q = queue;
        *s = w;
        return 0;
}

static void start_delivery_v2_hw(struct hisi_hba *hisi_hba)
{
        int dlvry_queue = hisi_hba->slot_prep->dlvry_queue;
        int dlvry_queue_slot = hisi_hba->slot_prep->dlvry_queue_slot;
        struct hisi_sas_dq *dq = &hisi_hba->dq[dlvry_queue];

        dq->wr_point = ++dlvry_queue_slot % HISI_SAS_QUEUE_SLOTS;
        hisi_sas_write32(hisi_hba, DLVRY_Q_0_WR_PTR + (dlvry_queue * 0x14),
                         dq->wr_point);
}

static int prep_prd_sge_v2_hw(struct hisi_hba *hisi_hba,
                              struct hisi_sas_slot *slot,
                              struct hisi_sas_cmd_hdr *hdr,
                              struct scatterlist *scatter,
                              int n_elem)
{
        struct device *dev = &hisi_hba->pdev->dev;
        struct scatterlist *sg;
        int i;

        if (n_elem > HISI_SAS_SGE_PAGE_CNT) {
                dev_err(dev, "prd err: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT",
                        n_elem);
                return -EINVAL;
        }

        slot->sge_page = dma_pool_alloc(hisi_hba->sge_page_pool, GFP_ATOMIC,
                                        &slot->sge_page_dma);
        if (!slot->sge_page)
                return -ENOMEM;

        for_each_sg(scatter, sg, n_elem, i) {
                struct hisi_sas_sge *entry = &slot->sge_page->sge[i];

                entry->addr = cpu_to_le64(sg_dma_address(sg));
                entry->page_ctrl_0 = entry->page_ctrl_1 = 0;
                entry->data_len = cpu_to_le32(sg_dma_len(sg));
                entry->data_off = 0;
        }

        hdr->prd_table_addr = cpu_to_le64(slot->sge_page_dma);

        hdr->sg_len = cpu_to_le32(n_elem << CMD_HDR_DATA_SGL_LEN_OFF);

        return 0;
}

static int prep_smp_v2_hw(struct hisi_hba *hisi_hba,
                          struct hisi_sas_slot *slot)
{
        struct sas_task *task = slot->task;
        struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
        struct domain_device *device = task->dev;
        struct device *dev = &hisi_hba->pdev->dev;
        struct hisi_sas_port *port = slot->port;
        struct scatterlist *sg_req, *sg_resp;
        struct hisi_sas_device *sas_dev = device->lldd_dev;
        dma_addr_t req_dma_addr;
        unsigned int req_len, resp_len;
        int elem, rc;

        /*
        * DMA-map SMP request, response buffers
        */
        /* req */
        sg_req = &task->smp_task.smp_req;
        elem = dma_map_sg(dev, sg_req, 1, DMA_TO_DEVICE);
        if (!elem)
                return -ENOMEM;
        req_len = sg_dma_len(sg_req);
        req_dma_addr = sg_dma_address(sg_req);

        /* resp */
        sg_resp = &task->smp_task.smp_resp;
        elem = dma_map_sg(dev, sg_resp, 1, DMA_FROM_DEVICE);
        if (!elem) {
                rc = -ENOMEM;
                goto err_out_req;
        }
        resp_len = sg_dma_len(sg_resp);
        if ((req_len & 0x3) || (resp_len & 0x3)) {
                rc = -EINVAL;
                goto err_out_resp;
        }

        /* create header */
        /* dw0 */
        hdr->dw0 = cpu_to_le32((port->id << CMD_HDR_PORT_OFF) |
                               (1 << CMD_HDR_PRIORITY_OFF) | /* high pri */
                               (2 << CMD_HDR_CMD_OFF)); /* smp */

        /* map itct entry */
        hdr->dw1 = cpu_to_le32((sas_dev->device_id << CMD_HDR_DEV_ID_OFF) |
                               (1 << CMD_HDR_FRAME_TYPE_OFF) |
                               (DIR_NO_DATA << CMD_HDR_DIR_OFF));

        /* dw2 */
        hdr->dw2 = cpu_to_le32((((req_len - 4) / 4) << CMD_HDR_CFL_OFF) |
                               (HISI_SAS_MAX_SMP_RESP_SZ / 4 <<
                               CMD_HDR_MRFL_OFF));

        hdr->transfer_tags = cpu_to_le32(slot->idx << CMD_HDR_IPTT_OFF);

        hdr->cmd_table_addr = cpu_to_le64(req_dma_addr);
        hdr->sts_buffer_addr = cpu_to_le64(slot->status_buffer_dma);

        return 0;

err_out_resp:
        dma_unmap_sg(dev, &slot->task->smp_task.smp_resp, 1,
                     DMA_FROM_DEVICE);
err_out_req:
        dma_unmap_sg(dev, &slot->task->smp_task.smp_req, 1,
                     DMA_TO_DEVICE);
        return rc;
}

static int prep_ssp_v2_hw(struct hisi_hba *hisi_hba,
                          struct hisi_sas_slot *slot, int is_tmf,
                          struct hisi_sas_tmf_task *tmf)
{
        struct sas_task *task = slot->task;
        struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
        struct domain_device *device = task->dev;
        struct hisi_sas_device *sas_dev = device->lldd_dev;
        struct hisi_sas_port *port = slot->port;
        struct sas_ssp_task *ssp_task = &task->ssp_task;
        struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
        int has_data = 0, rc, priority = is_tmf;
        u8 *buf_cmd;
        u32 dw1 = 0, dw2 = 0;

        hdr->dw0 = cpu_to_le32((1 << CMD_HDR_RESP_REPORT_OFF) |
                               (2 << CMD_HDR_TLR_CTRL_OFF) |
                               (port->id << CMD_HDR_PORT_OFF) |
                               (priority << CMD_HDR_PRIORITY_OFF) |
                               (1 << CMD_HDR_CMD_OFF)); /* ssp */

        dw1 = 1 << CMD_HDR_VDTL_OFF;
        if (is_tmf) {
                dw1 |= 2 << CMD_HDR_FRAME_TYPE_OFF;
                dw1 |= DIR_NO_DATA << CMD_HDR_DIR_OFF;
        } else {
                dw1 |= 1 << CMD_HDR_FRAME_TYPE_OFF;
                switch (scsi_cmnd->sc_data_direction) {
                case DMA_TO_DEVICE:
                        has_data = 1;
                        dw1 |= DIR_TO_DEVICE << CMD_HDR_DIR_OFF;
                        break;
                case DMA_FROM_DEVICE:
                        has_data = 1;
                        dw1 |= DIR_TO_INI << CMD_HDR_DIR_OFF;
                        break;
                default:
                        dw1 &= ~CMD_HDR_DIR_MSK;
                }
        }

        /* map itct entry */
        dw1 |= sas_dev->device_id << CMD_HDR_DEV_ID_OFF;
        hdr->dw1 = cpu_to_le32(dw1);

        dw2 = (((sizeof(struct ssp_command_iu) + sizeof(struct ssp_frame_hdr)
              + 3) / 4) << CMD_HDR_CFL_OFF) |
              ((HISI_SAS_MAX_SSP_RESP_SZ / 4) << CMD_HDR_MRFL_OFF) |
              (2 << CMD_HDR_SG_MOD_OFF);
        hdr->dw2 = cpu_to_le32(dw2);

        hdr->transfer_tags = cpu_to_le32(slot->idx);

        if (has_data) {
                rc = prep_prd_sge_v2_hw(hisi_hba, slot, hdr, task->scatter,
                                        slot->n_elem);
                if (rc)
                        return rc;
        }

        hdr->data_transfer_len = cpu_to_le32(task->total_xfer_len);
        hdr->cmd_table_addr = cpu_to_le64(slot->command_table_dma);
        hdr->sts_buffer_addr = cpu_to_le64(slot->status_buffer_dma);

        buf_cmd = slot->command_table + sizeof(struct ssp_frame_hdr);

        memcpy(buf_cmd, &task->ssp_task.LUN, 8);
        if (!is_tmf) {
                buf_cmd[9] = task->ssp_task.task_attr |
                                (task->ssp_task.task_prio << 3);
                memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
                                task->ssp_task.cmd->cmd_len);
        } else {
                buf_cmd[10] = tmf->tmf;
                switch (tmf->tmf) {
                case TMF_ABORT_TASK:
                case TMF_QUERY_TASK:
                        buf_cmd[12] =
                                (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
                        buf_cmd[13] =
                                tmf->tag_of_task_to_be_managed & 0xff;
                        break;
                default:
                        break;
                }
        }

        return 0;
}

static void sata_done_v2_hw(struct hisi_hba *hisi_hba, struct sas_task *task,
                            struct hisi_sas_slot *slot)
{
        struct task_status_struct *ts = &task->task_status;
        struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf;
        struct dev_to_host_fis *d2h = slot->status_buffer +
                                      sizeof(struct hisi_sas_err_record);

        resp->frame_len = sizeof(struct dev_to_host_fis);
        memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis));

        ts->buf_valid_size = sizeof(*resp);
}

#define TRANS_TX_ERR    0
#define TRANS_RX_ERR    1
#define DMA_TX_ERR              2
#define SIPC_RX_ERR             3
#define DMA_RX_ERR              4

#define DMA_TX_ERR_OFF  0
#define DMA_TX_ERR_MSK  (0xffff << DMA_TX_ERR_OFF)
#define SIPC_RX_ERR_OFF 16
#define SIPC_RX_ERR_MSK (0xffff << SIPC_RX_ERR_OFF)

static int parse_trans_tx_err_code_v2_hw(u32 err_msk)
{
        const u8 trans_tx_err_code_prio[] = {
                TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS,
                TRANS_TX_ERR_PHY_NOT_ENABLE,
                TRANS_TX_OPEN_CNX_ERR_WRONG_DESTINATION,
                TRANS_TX_OPEN_CNX_ERR_ZONE_VIOLATION,
                TRANS_TX_OPEN_CNX_ERR_BY_OTHER,
                RESERVED0,
                TRANS_TX_OPEN_CNX_ERR_AIP_TIMEOUT,
                TRANS_TX_OPEN_CNX_ERR_STP_RESOURCES_BUSY,
                TRANS_TX_OPEN_CNX_ERR_PROTOCOL_NOT_SUPPORTED,
                TRANS_TX_OPEN_CNX_ERR_CONNECTION_RATE_NOT_SUPPORTED,
                TRANS_TX_OPEN_CNX_ERR_BAD_DESTINATION,
                TRANS_TX_OPEN_CNX_ERR_BREAK_RCVD,
                TRANS_TX_OPEN_CNX_ERR_LOW_PHY_POWER,
                TRANS_TX_OPEN_CNX_ERR_PATHWAY_BLOCKED,
                TRANS_TX_OPEN_CNX_ERR_OPEN_TIMEOUT,
                TRANS_TX_OPEN_CNX_ERR_NO_DESTINATION,
                TRANS_TX_OPEN_RETRY_ERR_THRESHOLD_REACHED,
                TRANS_TX_ERR_WITH_CLOSE_PHYDISALE,
                TRANS_TX_ERR_WITH_CLOSE_DWS_TIMEOUT,
                TRANS_TX_ERR_WITH_CLOSE_COMINIT,
                TRANS_TX_ERR_WITH_BREAK_TIMEOUT,
                TRANS_TX_ERR_WITH_BREAK_REQUEST,
                TRANS_TX_ERR_WITH_BREAK_RECEVIED,
                TRANS_TX_ERR_WITH_CLOSE_TIMEOUT,
                TRANS_TX_ERR_WITH_CLOSE_NORMAL,
                TRANS_TX_ERR_WITH_NAK_RECEVIED,
                TRANS_TX_ERR_WITH_ACK_NAK_TIMEOUT,
                TRANS_TX_ERR_WITH_CREDIT_TIMEOUT,
                TRANS_TX_ERR_WITH_IPTT_CONFLICT,
                TRANS_TX_ERR_WITH_OPEN_BY_DES_OR_OTHERS,
                TRANS_TX_ERR_WITH_WAIT_RECV_TIMEOUT,
        };
        int index, i;

        for (i = 0; i < ARRAY_SIZE(trans_tx_err_code_prio); i++) {
                index = trans_tx_err_code_prio[i] - TRANS_TX_FAIL_BASE;
                if (err_msk & (1 << index))
                        return trans_tx_err_code_prio[i];
        }
        return -1;
}

static int parse_trans_rx_err_code_v2_hw(u32 err_msk)
{
        const u8 trans_rx_err_code_prio[] = {
                TRANS_RX_ERR_WITH_RXFRAME_CRC_ERR,
                TRANS_RX_ERR_WITH_RXFIS_8B10B_DISP_ERR,
                TRANS_RX_ERR_WITH_RXFRAME_HAVE_ERRPRM,
                TRANS_RX_ERR_WITH_RXFIS_DECODE_ERROR,
                TRANS_RX_ERR_WITH_RXFIS_CRC_ERR,
                TRANS_RX_ERR_WITH_RXFRAME_LENGTH_OVERRUN,
                TRANS_RX_ERR_WITH_RXFIS_RX_SYNCP,
                TRANS_RX_ERR_WITH_LINK_BUF_OVERRUN,
                TRANS_RX_ERR_WITH_CLOSE_PHY_DISABLE,
                TRANS_RX_ERR_WITH_CLOSE_DWS_TIMEOUT,
                TRANS_RX_ERR_WITH_CLOSE_COMINIT,
                TRANS_RX_ERR_WITH_BREAK_TIMEOUT,
                TRANS_RX_ERR_WITH_BREAK_REQUEST,
                TRANS_RX_ERR_WITH_BREAK_RECEVIED,
                RESERVED1,
                TRANS_RX_ERR_WITH_CLOSE_NORMAL,
                TRANS_RX_ERR_WITH_DATA_LEN0,
                TRANS_RX_ERR_WITH_BAD_HASH,
                TRANS_RX_XRDY_WLEN_ZERO_ERR,
                TRANS_RX_SSP_FRM_LEN_ERR,
                RESERVED2,
                RESERVED3,
                RESERVED4,
                RESERVED5,
                TRANS_RX_ERR_WITH_BAD_FRM_TYPE,
                TRANS_RX_SMP_FRM_LEN_ERR,
                TRANS_RX_SMP_RESP_TIMEOUT_ERR,
                RESERVED6,
                RESERVED7,
                RESERVED8,
                RESERVED9,
                TRANS_RX_R_ERR,
        };
        int index, i;

        for (i = 0; i < ARRAY_SIZE(trans_rx_err_code_prio); i++) {
                index = trans_rx_err_code_prio[i] - TRANS_RX_FAIL_BASE;
                if (err_msk & (1 << index))
                        return trans_rx_err_code_prio[i];
        }
        return -1;
}

static int parse_dma_tx_err_code_v2_hw(u32 err_msk)
{
        const u8 dma_tx_err_code_prio[] = {
                DMA_TX_UNEXP_XFER_ERR,
                DMA_TX_UNEXP_RETRANS_ERR,
                DMA_TX_XFER_LEN_OVERFLOW,
                DMA_TX_XFER_OFFSET_ERR,
                DMA_TX_RAM_ECC_ERR,
                DMA_TX_DIF_LEN_ALIGN_ERR,
                DMA_TX_DIF_CRC_ERR,
                DMA_TX_DIF_APP_ERR,
                DMA_TX_DIF_RPP_ERR,
                DMA_TX_DATA_SGL_OVERFLOW,
                DMA_TX_DIF_SGL_OVERFLOW,
        };
        int index, i;

        for (i = 0; i < ARRAY_SIZE(dma_tx_err_code_prio); i++) {
                index = dma_tx_err_code_prio[i] - DMA_TX_ERR_BASE;
                err_msk = err_msk & DMA_TX_ERR_MSK;
                if (err_msk & (1 << index))
                        return dma_tx_err_code_prio[i];
        }
        return -1;
}

static int parse_sipc_rx_err_code_v2_hw(u32 err_msk)
{
        const u8 sipc_rx_err_code_prio[] = {
                SIPC_RX_FIS_STATUS_ERR_BIT_VLD,
                SIPC_RX_PIO_WRSETUP_STATUS_DRQ_ERR,
                SIPC_RX_FIS_STATUS_BSY_BIT_ERR,
                SIPC_RX_WRSETUP_LEN_ODD_ERR,
                SIPC_RX_WRSETUP_LEN_ZERO_ERR,
                SIPC_RX_WRDATA_LEN_NOT_MATCH_ERR,
                SIPC_RX_NCQ_WRSETUP_OFFSET_ERR,
                SIPC_RX_NCQ_WRSETUP_AUTO_ACTIVE_ERR,
                SIPC_RX_SATA_UNEXP_FIS_ERR,
                SIPC_RX_WRSETUP_ESTATUS_ERR,
                SIPC_RX_DATA_UNDERFLOW_ERR,
        };
        int index, i;

        for (i = 0; i < ARRAY_SIZE(sipc_rx_err_code_prio); i++) {
                index = sipc_rx_err_code_prio[i] - SIPC_RX_ERR_BASE;
                err_msk = err_msk & SIPC_RX_ERR_MSK;
                if (err_msk & (1 << (index + 0x10)))
                        return sipc_rx_err_code_prio[i];
        }
        return -1;
}

static int parse_dma_rx_err_code_v2_hw(u32 err_msk)
{
        const u8 dma_rx_err_code_prio[] = {
                DMA_RX_UNKNOWN_FRM_ERR,
                DMA_RX_DATA_LEN_OVERFLOW,
                DMA_RX_DATA_LEN_UNDERFLOW,
                DMA_RX_DATA_OFFSET_ERR,
                RESERVED10,
                DMA_RX_SATA_FRAME_TYPE_ERR,
                DMA_RX_RESP_BUF_OVERFLOW,
                DMA_RX_UNEXP_RETRANS_RESP_ERR,
                DMA_RX_UNEXP_NORM_RESP_ERR,
                DMA_RX_UNEXP_RDFRAME_ERR,
                DMA_RX_PIO_DATA_LEN_ERR,
                DMA_RX_RDSETUP_STATUS_ERR,
                DMA_RX_RDSETUP_STATUS_DRQ_ERR,
                DMA_RX_RDSETUP_STATUS_BSY_ERR,
                DMA_RX_RDSETUP_LEN_ODD_ERR,
                DMA_RX_RDSETUP_LEN_ZERO_ERR,
                DMA_RX_RDSETUP_LEN_OVER_ERR,
                DMA_RX_RDSETUP_OFFSET_ERR,
                DMA_RX_RDSETUP_ACTIVE_ERR,
                DMA_RX_RDSETUP_ESTATUS_ERR,
                DMA_RX_RAM_ECC_ERR,
                DMA_RX_DIF_CRC_ERR,
                DMA_RX_DIF_APP_ERR,
                DMA_RX_DIF_RPP_ERR,
                DMA_RX_DATA_SGL_OVERFLOW,
                DMA_RX_DIF_SGL_OVERFLOW,
        };
        int index, i;

        for (i = 0; i < ARRAY_SIZE(dma_rx_err_code_prio); i++) {
                index = dma_rx_err_code_prio[i] - DMA_RX_ERR_BASE;
                if (err_msk & (1 << index))
                        return dma_rx_err_code_prio[i];
        }
        return -1;
}

/* by default, task resp is complete */
static void slot_err_v2_hw(struct hisi_hba *hisi_hba,
                           struct sas_task *task,
                           struct hisi_sas_slot *slot,
                           int err_phase)
{
        struct task_status_struct *ts = &task->task_status;
        struct hisi_sas_err_record_v2 *err_record = slot->status_buffer;
        u32 trans_tx_fail_type = cpu_to_le32(err_record->trans_tx_fail_type);
        u32 trans_rx_fail_type = cpu_to_le32(err_record->trans_rx_fail_type);
        u16 dma_tx_err_type = cpu_to_le16(err_record->dma_tx_err_type);
        u16 sipc_rx_err_type = cpu_to_le16(err_record->sipc_rx_err_type);
        u32 dma_rx_err_type = cpu_to_le32(err_record->dma_rx_err_type);
        int error = -1;

        if (err_phase == 1) {
                /* error in TX phase, the priority of error is: DW2 > DW0 */
                error = parse_dma_tx_err_code_v2_hw(dma_tx_err_type);
                if (error == -1)
                        error = parse_trans_tx_err_code_v2_hw(
                                        trans_tx_fail_type);
        } else if (err_phase == 2) {
                /* error in RX phase, the priority is: DW1 > DW3 > DW2 */
                error = parse_trans_rx_err_code_v2_hw(
                                        trans_rx_fail_type);
                if (error == -1) {
                        error = parse_dma_rx_err_code_v2_hw(
                                        dma_rx_err_type);
                        if (error == -1)
                                error = parse_sipc_rx_err_code_v2_hw(
                                                sipc_rx_err_type);
                }
        }

        switch (task->task_proto) {
        case SAS_PROTOCOL_SSP:
        {
                switch (error) {
                case TRANS_TX_OPEN_CNX_ERR_NO_DESTINATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_NO_DEST;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_PROTOCOL_NOT_SUPPORTED:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_EPROTO;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_CONNECTION_RATE_NOT_SUPPORTED:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_CONN_RATE;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_BAD_DESTINATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_BAD_DEST;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_WRONG_DESTINATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_WRONG_DEST;
                        break;
                }
                case DMA_RX_UNEXP_NORM_RESP_ERR:
                case TRANS_TX_OPEN_CNX_ERR_ZONE_VIOLATION:
                case DMA_RX_RESP_BUF_OVERFLOW:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_UNKNOWN;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_LOW_PHY_POWER:
                {
                        /* not sure */
                        ts->stat = SAS_DEV_NO_RESPONSE;
                        break;
                }
                case DMA_RX_DATA_LEN_OVERFLOW:
                {
                        ts->stat = SAS_DATA_OVERRUN;
                        ts->residual = 0;
                        break;
                }
                case DMA_RX_DATA_LEN_UNDERFLOW:
                {
                        ts->residual = dma_rx_err_type;
                        ts->stat = SAS_DATA_UNDERRUN;
                        break;
                }
                case TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS:
                case TRANS_TX_ERR_PHY_NOT_ENABLE:
                case TRANS_TX_OPEN_CNX_ERR_BY_OTHER:
                case TRANS_TX_OPEN_CNX_ERR_AIP_TIMEOUT:
                case TRANS_TX_OPEN_CNX_ERR_BREAK_RCVD:
                case TRANS_TX_OPEN_CNX_ERR_PATHWAY_BLOCKED:
                case TRANS_TX_OPEN_CNX_ERR_OPEN_TIMEOUT:
                case TRANS_TX_OPEN_RETRY_ERR_THRESHOLD_REACHED:
                case TRANS_TX_ERR_WITH_BREAK_TIMEOUT:
                case TRANS_TX_ERR_WITH_BREAK_REQUEST:
                case TRANS_TX_ERR_WITH_BREAK_RECEVIED:
                case TRANS_TX_ERR_WITH_CLOSE_TIMEOUT:
                case TRANS_TX_ERR_WITH_CLOSE_NORMAL:
                case TRANS_TX_ERR_WITH_CLOSE_PHYDISALE:
                case TRANS_TX_ERR_WITH_CLOSE_DWS_TIMEOUT:
                case TRANS_TX_ERR_WITH_CLOSE_COMINIT:
                case TRANS_TX_ERR_WITH_NAK_RECEVIED:
                case TRANS_TX_ERR_WITH_ACK_NAK_TIMEOUT:
                case TRANS_TX_ERR_WITH_CREDIT_TIMEOUT:
                case TRANS_TX_ERR_WITH_IPTT_CONFLICT:
                case TRANS_RX_ERR_WITH_RXFRAME_CRC_ERR:
                case TRANS_RX_ERR_WITH_RXFIS_8B10B_DISP_ERR:
                case TRANS_RX_ERR_WITH_RXFRAME_HAVE_ERRPRM:
                case TRANS_RX_ERR_WITH_LINK_BUF_OVERRUN:
                case TRANS_RX_ERR_WITH_BREAK_TIMEOUT:
                case TRANS_RX_ERR_WITH_BREAK_REQUEST:
                case TRANS_RX_ERR_WITH_BREAK_RECEVIED:
                case TRANS_RX_ERR_WITH_CLOSE_NORMAL:
                case TRANS_RX_ERR_WITH_CLOSE_DWS_TIMEOUT:
                case TRANS_RX_ERR_WITH_CLOSE_COMINIT:
                case TRANS_TX_ERR_FRAME_TXED:
                case TRANS_RX_ERR_WITH_CLOSE_PHY_DISABLE:
                case TRANS_RX_ERR_WITH_DATA_LEN0:
                case TRANS_RX_ERR_WITH_BAD_HASH:
                case TRANS_RX_XRDY_WLEN_ZERO_ERR:
                case TRANS_RX_SSP_FRM_LEN_ERR:
                case TRANS_RX_ERR_WITH_BAD_FRM_TYPE:
                case DMA_TX_DATA_SGL_OVERFLOW:
                case DMA_TX_UNEXP_XFER_ERR:
                case DMA_TX_UNEXP_RETRANS_ERR:
                case DMA_TX_XFER_LEN_OVERFLOW:
                case DMA_TX_XFER_OFFSET_ERR:
                case SIPC_RX_DATA_UNDERFLOW_ERR:
                case DMA_RX_DATA_SGL_OVERFLOW:
                case DMA_RX_DATA_OFFSET_ERR:
                case DMA_RX_RDSETUP_LEN_ODD_ERR:
                case DMA_RX_RDSETUP_LEN_ZERO_ERR:
                case DMA_RX_RDSETUP_LEN_OVER_ERR:
                case DMA_RX_SATA_FRAME_TYPE_ERR:
                case DMA_RX_UNKNOWN_FRM_ERR:
                {
                        /* This will request a retry */
                        ts->stat = SAS_QUEUE_FULL;
                        slot->abort = 1;
                        break;
                }
                default:
                        break;
                }
        }
                break;
        case SAS_PROTOCOL_SMP:
                ts->stat = SAM_STAT_CHECK_CONDITION;
                break;

        case SAS_PROTOCOL_SATA:
        case SAS_PROTOCOL_STP:
        case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
        {
                switch (error) {
                case TRANS_TX_OPEN_CNX_ERR_NO_DESTINATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_NO_DEST;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_LOW_PHY_POWER:
                {
                        ts->resp = SAS_TASK_UNDELIVERED;
                        ts->stat = SAS_DEV_NO_RESPONSE;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_PROTOCOL_NOT_SUPPORTED:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_EPROTO;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_CONNECTION_RATE_NOT_SUPPORTED:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_CONN_RATE;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_BAD_DESTINATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_CONN_RATE;
                        break;
                }
                case TRANS_TX_OPEN_CNX_ERR_WRONG_DESTINATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_WRONG_DEST;
                        break;
                }
                case DMA_RX_RESP_BUF_OVERFLOW:
                case DMA_RX_UNEXP_NORM_RESP_ERR:
                case TRANS_TX_OPEN_CNX_ERR_ZONE_VIOLATION:
                {
                        ts->stat = SAS_OPEN_REJECT;
                        ts->open_rej_reason = SAS_OREJ_UNKNOWN;
                        break;
                }
                case DMA_RX_DATA_LEN_OVERFLOW:
                {
                        ts->stat = SAS_DATA_OVERRUN;
                        ts->residual = 0;
                        break;
                }
                case DMA_RX_DATA_LEN_UNDERFLOW:
                {
                        ts->residual = dma_rx_err_type;
                        ts->stat = SAS_DATA_UNDERRUN;
                        break;
                }
                case TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS:
                case TRANS_TX_ERR_PHY_NOT_ENABLE:
                case TRANS_TX_OPEN_CNX_ERR_BY_OTHER:
                case TRANS_TX_OPEN_CNX_ERR_AIP_TIMEOUT:
                case TRANS_TX_OPEN_CNX_ERR_BREAK_RCVD:
                case TRANS_TX_OPEN_CNX_ERR_PATHWAY_BLOCKED:
                case TRANS_TX_OPEN_CNX_ERR_OPEN_TIMEOUT:
                case TRANS_TX_OPEN_RETRY_ERR_THRESHOLD_REACHED:
                case TRANS_TX_ERR_WITH_BREAK_TIMEOUT:
                case TRANS_TX_ERR_WITH_BREAK_REQUEST:
                case TRANS_TX_ERR_WITH_BREAK_RECEVIED:
                case TRANS_TX_ERR_WITH_CLOSE_TIMEOUT:
                case TRANS_TX_ERR_WITH_CLOSE_NORMAL:
                case TRANS_TX_ERR_WITH_CLOSE_PHYDISALE:
                case TRANS_TX_ERR_WITH_CLOSE_DWS_TIMEOUT:
                case TRANS_TX_ERR_WITH_CLOSE_COMINIT:
                case TRANS_TX_ERR_WITH_ACK_NAK_TIMEOUT:
                case TRANS_TX_ERR_WITH_CREDIT_TIMEOUT:
                case TRANS_TX_ERR_WITH_OPEN_BY_DES_OR_OTHERS:
                case TRANS_TX_ERR_WITH_WAIT_RECV_TIMEOUT:
                case TRANS_RX_ERR_WITH_RXFRAME_HAVE_ERRPRM:
                case TRANS_RX_ERR_WITH_RXFIS_8B10B_DISP_ERR:
                case TRANS_RX_ERR_WITH_RXFIS_DECODE_ERROR:
                case TRANS_RX_ERR_WITH_RXFIS_CRC_ERR:
                case TRANS_RX_ERR_WITH_RXFRAME_LENGTH_OVERRUN:
                case TRANS_RX_ERR_WITH_RXFIS_RX_SYNCP:
                case TRANS_RX_ERR_WITH_LINK_BUF_OVERRUN:
                case TRANS_RX_ERR_WITH_BREAK_TIMEOUT:
                case TRANS_RX_ERR_WITH_BREAK_REQUEST:
                case TRANS_RX_ERR_WITH_BREAK_RECEVIED:
                case TRANS_RX_ERR_WITH_CLOSE_NORMAL:
                case TRANS_RX_ERR_WITH_CLOSE_PHY_DISABLE:
                case TRANS_RX_ERR_WITH_CLOSE_DWS_TIMEOUT:
                case TRANS_RX_ERR_WITH_CLOSE_COMINIT:
                case TRANS_RX_ERR_WITH_DATA_LEN0:
                case TRANS_RX_ERR_WITH_BAD_HASH:
                case TRANS_RX_XRDY_WLEN_ZERO_ERR:
                case TRANS_RX_ERR_WITH_BAD_FRM_TYPE:
                case DMA_TX_DATA_SGL_OVERFLOW:
                case DMA_TX_UNEXP_XFER_ERR:
                case DMA_TX_UNEXP_RETRANS_ERR:
                case DMA_TX_XFER_LEN_OVERFLOW:
                case DMA_TX_XFER_OFFSET_ERR:
                case SIPC_RX_FIS_STATUS_ERR_BIT_VLD:
                case SIPC_RX_PIO_WRSETUP_STATUS_DRQ_ERR:
                case SIPC_RX_FIS_STATUS_BSY_BIT_ERR:
                case SIPC_RX_WRSETUP_LEN_ODD_ERR:
                case SIPC_RX_WRSETUP_LEN_ZERO_ERR:
                case SIPC_RX_WRDATA_LEN_NOT_MATCH_ERR:
                case SIPC_RX_SATA_UNEXP_FIS_ERR:
                case DMA_RX_DATA_SGL_OVERFLOW:
                case DMA_RX_DATA_OFFSET_ERR:
                case DMA_RX_SATA_FRAME_TYPE_ERR:
                case DMA_RX_UNEXP_RDFRAME_ERR:
                case DMA_RX_PIO_DATA_LEN_ERR:
                case DMA_RX_RDSETUP_STATUS_ERR:
                case DMA_RX_RDSETUP_STATUS_DRQ_ERR:
                case DMA_RX_RDSETUP_STATUS_BSY_ERR:
                case DMA_RX_RDSETUP_LEN_ODD_ERR:
                case DMA_RX_RDSETUP_LEN_ZERO_ERR:
                case DMA_RX_RDSETUP_LEN_OVER_ERR:
                case DMA_RX_RDSETUP_OFFSET_ERR:
                case DMA_RX_RDSETUP_ACTIVE_ERR:
                case DMA_RX_RDSETUP_ESTATUS_ERR:
                case DMA_RX_UNKNOWN_FRM_ERR:
                case TRANS_RX_SSP_FRM_LEN_ERR:
                case TRANS_TX_OPEN_CNX_ERR_STP_RESOURCES_BUSY:
                {
                        slot->abort = 1;
                        ts->stat = SAS_PHY_DOWN;
                        break;
                }
                default:
                {
                        ts->stat = SAS_PROTO_RESPONSE;
                        break;
                }
                }
                sata_done_v2_hw(hisi_hba, task, slot);
        }
                break;
        default:
                break;
        }
}

static int
slot_complete_v2_hw(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot)
{
        struct sas_task *task = slot->task;
        struct hisi_sas_device *sas_dev;
        struct device *dev = &hisi_hba->pdev->dev;
        struct task_status_struct *ts;
        struct domain_device *device;
        enum exec_status sts;
        struct hisi_sas_complete_v2_hdr *complete_queue =
                        hisi_hba->complete_hdr[slot->cmplt_queue];
        struct hisi_sas_complete_v2_hdr *complete_hdr =
                        &complete_queue[slot->cmplt_queue_slot];
        unsigned long flags;
        int aborted;

        if (unlikely(!task || !task->lldd_task || !task->dev))
                return -EINVAL;

        ts = &task->task_status;
        device = task->dev;
        sas_dev = device->lldd_dev;

        spin_lock_irqsave(&task->task_state_lock, flags);
        aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
        task->task_state_flags &=
                ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
        spin_unlock_irqrestore(&task->task_state_lock, flags);

        memset(ts, 0, sizeof(*ts));
        ts->resp = SAS_TASK_COMPLETE;

        if (unlikely(aborted)) {
                ts->stat = SAS_ABORTED_TASK;
                hisi_sas_slot_task_free(hisi_hba, task, slot);
                return -1;
        }

        if (unlikely(!sas_dev)) {
                dev_dbg(dev, "slot complete: port has no device\n");
                ts->stat = SAS_PHY_DOWN;
                goto out;
        }

        /* Use SAS+TMF status codes */
        switch ((complete_hdr->dw0 & CMPLT_HDR_ABORT_STAT_MSK)
                        >> CMPLT_HDR_ABORT_STAT_OFF) {
        case STAT_IO_ABORTED:
                /* this io has been aborted by abort command */
                ts->stat = SAS_ABORTED_TASK;
                goto out;
        case STAT_IO_COMPLETE:
                /* internal abort command complete */
                ts->stat = TMF_RESP_FUNC_SUCC;
                goto out;
        case STAT_IO_NO_DEVICE:
                ts->stat = TMF_RESP_FUNC_COMPLETE;
                goto out;
        case STAT_IO_NOT_VALID:
                /* abort single io, controller don't find
                 * the io need to abort
                 */
                ts->stat = TMF_RESP_FUNC_FAILED;
                goto out;
        default:
                break;
        }

        if ((complete_hdr->dw0 & CMPLT_HDR_ERX_MSK) &&
                (!(complete_hdr->dw0 & CMPLT_HDR_RSPNS_XFRD_MSK))) {
                u32 err_phase = (complete_hdr->dw0 & CMPLT_HDR_ERR_PHASE_MSK)
                                >> CMPLT_HDR_ERR_PHASE_OFF;

                /* Analyse error happens on which phase TX or RX */
                if (ERR_ON_TX_PHASE(err_phase))
                        slot_err_v2_hw(hisi_hba, task, slot, 1);
                else if (ERR_ON_RX_PHASE(err_phase))
                        slot_err_v2_hw(hisi_hba, task, slot, 2);

                if (unlikely(slot->abort))
                        return ts->stat;
                goto out;
        }

        switch (task->task_proto) {
        case SAS_PROTOCOL_SSP:
        {
                struct ssp_response_iu *iu = slot->status_buffer +
                        sizeof(struct hisi_sas_err_record);

                sas_ssp_task_response(dev, task, iu);
                break;
        }
        case SAS_PROTOCOL_SMP:
        {
                struct scatterlist *sg_resp = &task->smp_task.smp_resp;
                void *to;

                ts->stat = SAM_STAT_GOOD;
                to = kmap_atomic(sg_page(sg_resp));

                dma_unmap_sg(dev, &task->smp_task.smp_resp, 1,
                             DMA_FROM_DEVICE);
                dma_unmap_sg(dev, &task->smp_task.smp_req, 1,
                             DMA_TO_DEVICE);
                memcpy(to + sg_resp->offset,
                       slot->status_buffer +
                       sizeof(struct hisi_sas_err_record),
                       sg_dma_len(sg_resp));
                kunmap_atomic(to);
                break;
        }
        case SAS_PROTOCOL_SATA:
        case SAS_PROTOCOL_STP:
        case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
        {
                ts->stat = SAM_STAT_GOOD;
                sata_done_v2_hw(hisi_hba, task, slot);
                break;
        }
        default:
                ts->stat = SAM_STAT_CHECK_CONDITION;
                break;
        }

        if (!slot->port->port_attached) {
                dev_err(dev, "slot complete: port %d has removed\n",
                        slot->port->sas_port.id);
                ts->stat = SAS_PHY_DOWN;
        }

out:
        spin_lock_irqsave(&task->task_state_lock, flags);
        task->task_state_flags |= SAS_TASK_STATE_DONE;
        spin_unlock_irqrestore(&task->task_state_lock, flags);
        hisi_sas_slot_task_free(hisi_hba, task, slot);
        sts = ts->stat;

        if (task->task_done)
                task->task_done(task);

        return sts;
}

static u8 get_ata_protocol(u8 cmd, int direction)
{
        switch (cmd) {
        case ATA_CMD_FPDMA_WRITE:
        case ATA_CMD_FPDMA_READ:
        case ATA_CMD_FPDMA_RECV:
        case ATA_CMD_FPDMA_SEND:
        case ATA_CMD_NCQ_NON_DATA:
        return SATA_PROTOCOL_FPDMA;

        case ATA_CMD_DOWNLOAD_MICRO:
        case ATA_CMD_ID_ATA:
        case ATA_CMD_PMP_READ:
        case ATA_CMD_READ_LOG_EXT:
        case ATA_CMD_PIO_READ:
        case ATA_CMD_PIO_READ_EXT:
        case ATA_CMD_PMP_WRITE:
        case ATA_CMD_WRITE_LOG_EXT:
        case ATA_CMD_PIO_WRITE:
        case ATA_CMD_PIO_WRITE_EXT:
        return SATA_PROTOCOL_PIO;

        case ATA_CMD_DSM:
        case ATA_CMD_DOWNLOAD_MICRO_DMA:
        case ATA_CMD_PMP_READ_DMA:
        case ATA_CMD_PMP_WRITE_DMA:
        case ATA_CMD_READ:
        case ATA_CMD_READ_EXT:
        case ATA_CMD_READ_LOG_DMA_EXT:
        case ATA_CMD_READ_STREAM_DMA_EXT:
        case ATA_CMD_TRUSTED_RCV_DMA:
        case ATA_CMD_TRUSTED_SND_DMA:
        case ATA_CMD_WRITE:
        case ATA_CMD_WRITE_EXT:
        case ATA_CMD_WRITE_FUA_EXT:
        case ATA_CMD_WRITE_QUEUED:
        case ATA_CMD_WRITE_LOG_DMA_EXT:
        case ATA_CMD_WRITE_STREAM_DMA_EXT:
        return SATA_PROTOCOL_DMA;

        case ATA_CMD_CHK_POWER:
        case ATA_CMD_DEV_RESET:
        case ATA_CMD_EDD:
        case ATA_CMD_FLUSH:
        case ATA_CMD_FLUSH_EXT:
        case ATA_CMD_VERIFY:
        case ATA_CMD_VERIFY_EXT:
        case ATA_CMD_SET_FEATURES:
        case ATA_CMD_STANDBY:
        case ATA_CMD_STANDBYNOW1:
        return SATA_PROTOCOL_NONDATA;
        default:
                if (direction == DMA_NONE)
                        return SATA_PROTOCOL_NONDATA;
                return SATA_PROTOCOL_PIO;
        }
}

static int get_ncq_tag_v2_hw(struct sas_task *task, u32 *tag)
{
        struct ata_queued_cmd *qc = task->uldd_task;

        if (qc) {
                if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
                        qc->tf.command == ATA_CMD_FPDMA_READ) {
                        *tag = qc->tag;
                        return 1;
                }
        }
        return 0;
}

static int prep_ata_v2_hw(struct hisi_hba *hisi_hba,
                          struct hisi_sas_slot *slot)
{
        struct sas_task *task = slot->task;
        struct domain_device *device = task->dev;
        struct domain_device *parent_dev = device->parent;
        struct hisi_sas_device *sas_dev = device->lldd_dev;
        struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
        struct asd_sas_port *sas_port = device->port;
        struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
        u8 *buf_cmd;
        int has_data = 0, rc = 0, hdr_tag = 0;
        u32 dw1 = 0, dw2 = 0;

        /* create header */
        /* dw0 */
        hdr->dw0 = cpu_to_le32(port->id << CMD_HDR_PORT_OFF);
        if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
                hdr->dw0 |= cpu_to_le32(3 << CMD_HDR_CMD_OFF);
        else
                hdr->dw0 |= cpu_to_le32(4 << CMD_HDR_CMD_OFF);

        /* dw1 */
        switch (task->data_dir) {
        case DMA_TO_DEVICE:
                has_data = 1;
                dw1 |= DIR_TO_DEVICE << CMD_HDR_DIR_OFF;
                break;
        case DMA_FROM_DEVICE:
                has_data = 1;
                dw1 |= DIR_TO_INI << CMD_HDR_DIR_OFF;
                break;
        default:
                dw1 &= ~CMD_HDR_DIR_MSK;
        }

        if ((task->ata_task.fis.command == ATA_CMD_DEV_RESET) &&
                        (task->ata_task.fis.control & ATA_SRST))
                dw1 |= 1 << CMD_HDR_RESET_OFF;

        dw1 |= (get_ata_protocol(task->ata_task.fis.command, task->data_dir))
                << CMD_HDR_FRAME_TYPE_OFF;
        dw1 |= sas_dev->device_id << CMD_HDR_DEV_ID_OFF;
        hdr->dw1 = cpu_to_le32(dw1);

        /* dw2 */
        if (task->ata_task.use_ncq && get_ncq_tag_v2_hw(task, &hdr_tag)) {
                task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
                dw2 |= hdr_tag << CMD_HDR_NCQ_TAG_OFF;
        }

        dw2 |= (HISI_SAS_MAX_STP_RESP_SZ / 4) << CMD_HDR_CFL_OFF |
                        2 << CMD_HDR_SG_MOD_OFF;
        hdr->dw2 = cpu_to_le32(dw2);

        /* dw3 */
        hdr->transfer_tags = cpu_to_le32(slot->idx);

        if (has_data) {
                rc = prep_prd_sge_v2_hw(hisi_hba, slot, hdr, task->scatter,
                                        slot->n_elem);
                if (rc)
                        return rc;
        }


        hdr->data_transfer_len = cpu_to_le32(task->total_xfer_len);
        hdr->cmd_table_addr = cpu_to_le64(slot->command_table_dma);
        hdr->sts_buffer_addr = cpu_to_le64(slot->status_buffer_dma);

        buf_cmd = slot->command_table;

        if (likely(!task->ata_task.device_control_reg_update))
                task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
        /* fill in command FIS */
        memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));

        return 0;
}

static int prep_abort_v2_hw(struct hisi_hba *hisi_hba,
                struct hisi_sas_slot *slot,
                int device_id, int abort_flag, int tag_to_abort)
{
        struct sas_task *task = slot->task;
        struct domain_device *dev = task->dev;
        struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
        struct hisi_sas_port *port = slot->port;

        /* dw0 */
        hdr->dw0 = cpu_to_le32((5 << CMD_HDR_CMD_OFF) | /*abort*/
                               (port->id << CMD_HDR_PORT_OFF) |
                               ((dev_is_sata(dev) ? 1:0) <<
                                CMD_HDR_ABORT_DEVICE_TYPE_OFF) |
                               (abort_flag << CMD_HDR_ABORT_FLAG_OFF));

        /* dw1 */
        hdr->dw1 = cpu_to_le32(device_id << CMD_HDR_DEV_ID_OFF);

        /* dw7 */
        hdr->dw7 = cpu_to_le32(tag_to_abort << CMD_HDR_ABORT_IPTT_OFF);
        hdr->transfer_tags = cpu_to_le32(slot->idx);

        return 0;
}

static int phy_up_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
{
        int i, res = IRQ_HANDLED;
        u32 port_id, link_rate, hard_phy_linkrate;
        struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
        struct asd_sas_phy *sas_phy = &phy->sas_phy;
        struct device *dev = &hisi_hba->pdev->dev;
        u32 *frame_rcvd = (u32 *)sas_phy->frame_rcvd;
        struct sas_identify_frame *id = (struct sas_identify_frame *)frame_rcvd;

        hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 1);

        if (is_sata_phy_v2_hw(hisi_hba, phy_no))
                goto end;

        if (phy_no == 8) {
                u32 port_state = hisi_sas_read32(hisi_hba, PORT_STATE);

                port_id = (port_state & PORT_STATE_PHY8_PORT_NUM_MSK) >>
                          PORT_STATE_PHY8_PORT_NUM_OFF;
                link_rate = (port_state & PORT_STATE_PHY8_CONN_RATE_MSK) >>
                            PORT_STATE_PHY8_CONN_RATE_OFF;
        } else {
                port_id = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
                port_id = (port_id >> (4 * phy_no)) & 0xf;
                link_rate = hisi_sas_read32(hisi_hba, PHY_CONN_RATE);
                link_rate = (link_rate >> (phy_no * 4)) & 0xf;
        }

        if (port_id == 0xf) {
                dev_err(dev, "phyup: phy%d invalid portid\n", phy_no);
                res = IRQ_NONE;
                goto end;
        }

        for (i = 0; i < 6; i++) {
                u32 idaf = hisi_sas_phy_read32(hisi_hba, phy_no,
                                               RX_IDAF_DWORD0 + (i * 4));
                frame_rcvd[i] = __swab32(idaf);
        }

        sas_phy->linkrate = link_rate;
        hard_phy_linkrate = hisi_sas_phy_read32(hisi_hba, phy_no,
                                                HARD_PHY_LINKRATE);
        phy->maximum_linkrate = hard_phy_linkrate & 0xf;
        phy->minimum_linkrate = (hard_phy_linkrate >> 4) & 0xf;

        sas_phy->oob_mode = SAS_OOB_MODE;
        memcpy(sas_phy->attached_sas_addr, &id->sas_addr, SAS_ADDR_SIZE);
        dev_info(dev, "phyup: phy%d link_rate=%d\n", phy_no, link_rate);
        phy->port_id = port_id;
        phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
        phy->phy_type |= PORT_TYPE_SAS;
        phy->phy_attached = 1;
        phy->identify.device_type = id->dev_type;
        phy->frame_rcvd_size =  sizeof(struct sas_identify_frame);
        if (phy->identify.device_type == SAS_END_DEVICE)
                phy->identify.target_port_protocols =
                        SAS_PROTOCOL_SSP;
        else if (phy->identify.device_type != SAS_PHY_UNUSED) {
                phy->identify.target_port_protocols =
                        SAS_PROTOCOL_SMP;
                if (!timer_pending(&hisi_hba->timer))
                        set_link_timer_quirk(hisi_hba);
        }
        queue_work(hisi_hba->wq, &phy->phyup_ws);

end:
        hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
                             CHL_INT0_SL_PHY_ENABLE_MSK);
        hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 0);

        return res;
}

static bool check_any_wideports_v2_hw(struct hisi_hba *hisi_hba)
{
        u32 port_state;

        port_state = hisi_sas_read32(hisi_hba, PORT_STATE);
        if (port_state & 0x1ff)
                return true;

        return false;
}

static int phy_down_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
{
        u32 phy_state, sl_ctrl, txid_auto;
        struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
        struct hisi_sas_port *port = phy->port;

        hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_NOT_RDY_MSK, 1);

        phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
        hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0);

        sl_ctrl = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
        hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL,
                             sl_ctrl & ~SL_CONTROL_CTA_MSK);
        if (port && !get_wideport_bitmap_v2_hw(hisi_hba, port->id))
                if (!check_any_wideports_v2_hw(hisi_hba) &&
                                timer_pending(&hisi_hba->timer))
                        del_timer(&hisi_hba->timer);

        txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO);
        hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,
                             txid_auto | TXID_AUTO_CT3_MSK);

        hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0, CHL_INT0_NOT_RDY_MSK);
        hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_NOT_RDY_MSK, 0);

        return IRQ_HANDLED;
}

static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p)
{
        struct hisi_hba *hisi_hba = p;
        u32 irq_msk;
        int phy_no = 0;

        irq_msk = (hisi_sas_read32(hisi_hba, HGC_INVLD_DQE_INFO)
                   >> HGC_INVLD_DQE_INFO_FB_CH0_OFF) & 0x1ff;
        while (irq_msk) {
                if (irq_msk  & 1) {
                        u32 reg_value = hisi_sas_phy_read32(hisi_hba, phy_no,
                                            CHL_INT0);

                        switch (reg_value & (CHL_INT0_NOT_RDY_MSK |
                                        CHL_INT0_SL_PHY_ENABLE_MSK)) {

                        case CHL_INT0_SL_PHY_ENABLE_MSK:
                                /* phy up */
                                if (phy_up_v2_hw(phy_no, hisi_hba) ==
                                    IRQ_NONE)
                                        return IRQ_NONE;
                                break;

                        case CHL_INT0_NOT_RDY_MSK:
                                /* phy down */
                                if (phy_down_v2_hw(phy_no, hisi_hba) ==
                                    IRQ_NONE)
                                        return IRQ_NONE;
                                break;

                        case (CHL_INT0_NOT_RDY_MSK |
                                        CHL_INT0_SL_PHY_ENABLE_MSK):
                                reg_value = hisi_sas_read32(hisi_hba,
                                                PHY_STATE);
                                if (reg_value & BIT(phy_no)) {
                                        /* phy up */
                                        if (phy_up_v2_hw(phy_no, hisi_hba) ==
                                            IRQ_NONE)
                                                return IRQ_NONE;
                                } else {
                                        /* phy down */
                                        if (phy_down_v2_hw(phy_no, hisi_hba) ==
                                            IRQ_NONE)
                                                return IRQ_NONE;
                                }
                                break;

                        default:
                                break;
                        }

                }
                irq_msk >>= 1;
                phy_no++;
        }

        return IRQ_HANDLED;
}

static void phy_bcast_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
{
        struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
        struct asd_sas_phy *sas_phy = &phy->sas_phy;
        struct sas_ha_struct *sas_ha = &hisi_hba->sha;
        u32 bcast_status;

        hisi_sas_phy_write32(hisi_hba, phy_no, SL_RX_BCAST_CHK_MSK, 1);
        bcast_status = hisi_sas_phy_read32(hisi_hba, phy_no, RX_PRIMS_STATUS);
        if (bcast_status & RX_BCAST_CHG_MSK)
                sas_ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
        hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
                             CHL_INT0_SL_RX_BCST_ACK_MSK);
        hisi_sas_phy_write32(hisi_hba, phy_no, SL_RX_BCAST_CHK_MSK, 0);
}

static irqreturn_t int_chnl_int_v2_hw(int irq_no, void *p)
{
        struct hisi_hba *hisi_hba = p;
        struct device *dev = &hisi_hba->pdev->dev;
        u32 ent_msk, ent_tmp, irq_msk;
        int phy_no = 0;

        ent_msk = hisi_sas_read32(hisi_hba, ENT_INT_SRC_MSK3);
        ent_tmp = ent_msk;
        ent_msk |= ENT_INT_SRC_MSK3_ENT95_MSK_MSK;
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, ent_msk);

        irq_msk = (hisi_sas_read32(hisi_hba, HGC_INVLD_DQE_INFO) >>
                        HGC_INVLD_DQE_INFO_FB_CH3_OFF) & 0x1ff;

        while (irq_msk) {
                if (irq_msk & (1 << phy_no)) {
                        u32 irq_value0 = hisi_sas_phy_read32(hisi_hba, phy_no,
                                                             CHL_INT0);
                        u32 irq_value1 = hisi_sas_phy_read32(hisi_hba, phy_no,
                                                             CHL_INT1);
                        u32 irq_value2 = hisi_sas_phy_read32(hisi_hba, phy_no,
                                                             CHL_INT2);

                        if (irq_value1) {
                                if (irq_value1 & (CHL_INT1_DMAC_RX_ECC_ERR_MSK |
                                                  CHL_INT1_DMAC_TX_ECC_ERR_MSK))
                                        panic("%s: DMAC RX/TX ecc bad error!\
                                               (0x%x)",
                                              dev_name(dev), irq_value1);

                                hisi_sas_phy_write32(hisi_hba, phy_no,
                                                     CHL_INT1, irq_value1);
                        }

                        if (irq_value2)
                                hisi_sas_phy_write32(hisi_hba, phy_no,
                                                     CHL_INT2, irq_value2);


                        if (irq_value0) {
                                if (irq_value0 & CHL_INT0_SL_RX_BCST_ACK_MSK)
                                        phy_bcast_v2_hw(phy_no, hisi_hba);

                                hisi_sas_phy_write32(hisi_hba, phy_no,
                                                CHL_INT0, irq_value0
                                                & (~CHL_INT0_HOTPLUG_TOUT_MSK)
                                                & (~CHL_INT0_SL_PHY_ENABLE_MSK)
                                                & (~CHL_INT0_NOT_RDY_MSK));
                        }
                }
                irq_msk &= ~(1 << phy_no);
                phy_no++;
        }

        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, ent_tmp);

        return IRQ_HANDLED;
}

static void
one_bit_ecc_error_process_v2_hw(struct hisi_hba *hisi_hba, u32 irq_value)
{
        struct device *dev = &hisi_hba->pdev->dev;
        u32 reg_val;

        if (irq_value & BIT(SAS_ECC_INTR_DQE_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_DQE_ECC_ADDR);
                dev_warn(dev, "hgc_dqe_acc1b_intr found: \
                               Ram address is 0x%08X\n",
                         (reg_val & HGC_DQE_ECC_1B_ADDR_MSK) >>
                         HGC_DQE_ECC_1B_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_IOST_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_IOST_ECC_ADDR);
                dev_warn(dev, "hgc_iost_acc1b_intr found: \
                               Ram address is 0x%08X\n",
                         (reg_val & HGC_IOST_ECC_1B_ADDR_MSK) >>
                         HGC_IOST_ECC_1B_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_ITCT_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_ITCT_ECC_ADDR);
                dev_warn(dev, "hgc_itct_acc1b_intr found: \
                               Ram address is 0x%08X\n",
                         (reg_val & HGC_ITCT_ECC_1B_ADDR_MSK) >>
                         HGC_ITCT_ECC_1B_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_IOSTLIST_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
                dev_warn(dev, "hgc_iostl_acc1b_intr found: \
                               memory address is 0x%08X\n",
                         (reg_val & HGC_LM_DFX_STATUS2_IOSTLIST_MSK) >>
                         HGC_LM_DFX_STATUS2_IOSTLIST_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_ITCTLIST_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
                dev_warn(dev, "hgc_itctl_acc1b_intr found: \
                               memory address is 0x%08X\n",
                         (reg_val & HGC_LM_DFX_STATUS2_ITCTLIST_MSK) >>
                         HGC_LM_DFX_STATUS2_ITCTLIST_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_CQE_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_CQE_ECC_ADDR);
                dev_warn(dev, "hgc_cqe_acc1b_intr found: \
                               Ram address is 0x%08X\n",
                         (reg_val & HGC_CQE_ECC_1B_ADDR_MSK) >>
                         HGC_CQE_ECC_1B_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM0_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
                dev_warn(dev, "rxm_mem0_acc1b_intr found: \
                               memory address is 0x%08X\n",
                         (reg_val & HGC_RXM_DFX_STATUS14_MEM0_MSK) >>
                         HGC_RXM_DFX_STATUS14_MEM0_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM1_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
                dev_warn(dev, "rxm_mem1_acc1b_intr found: \
                               memory address is 0x%08X\n",
                         (reg_val & HGC_RXM_DFX_STATUS14_MEM1_MSK) >>
                         HGC_RXM_DFX_STATUS14_MEM1_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM2_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
                dev_warn(dev, "rxm_mem2_acc1b_intr found: \
                               memory address is 0x%08X\n",
                         (reg_val & HGC_RXM_DFX_STATUS14_MEM2_MSK) >>
                         HGC_RXM_DFX_STATUS14_MEM2_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM3_ECC_1B_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS15);
                dev_warn(dev, "rxm_mem3_acc1b_intr found: \
                               memory address is 0x%08X\n",
                         (reg_val & HGC_RXM_DFX_STATUS15_MEM3_MSK) >>
                         HGC_RXM_DFX_STATUS15_MEM3_OFF);
        }

}

static void multi_bit_ecc_error_process_v2_hw(struct hisi_hba *hisi_hba,
                u32 irq_value)
{
        u32 reg_val;
        struct device *dev = &hisi_hba->pdev->dev;

        if (irq_value & BIT(SAS_ECC_INTR_DQE_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_DQE_ECC_ADDR);
                panic("%s: hgc_dqe_accbad_intr (0x%x) found: \
                       Ram address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_DQE_ECC_MB_ADDR_MSK) >>
                      HGC_DQE_ECC_MB_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_IOST_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_IOST_ECC_ADDR);
                panic("%s: hgc_iost_accbad_intr (0x%x) found: \
                       Ram address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_IOST_ECC_MB_ADDR_MSK) >>
                      HGC_IOST_ECC_MB_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_ITCT_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_ITCT_ECC_ADDR);
                panic("%s: hgc_itct_accbad_intr (0x%x) found: \
                       Ram address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_ITCT_ECC_MB_ADDR_MSK) >>
                      HGC_ITCT_ECC_MB_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_IOSTLIST_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
                panic("%s: hgc_iostl_accbad_intr (0x%x) found: \
                       memory address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_LM_DFX_STATUS2_IOSTLIST_MSK) >>
                      HGC_LM_DFX_STATUS2_IOSTLIST_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_ITCTLIST_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_LM_DFX_STATUS2);
                panic("%s: hgc_itctl_accbad_intr (0x%x) found: \
                       memory address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_LM_DFX_STATUS2_ITCTLIST_MSK) >>
                      HGC_LM_DFX_STATUS2_ITCTLIST_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_CQE_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_CQE_ECC_ADDR);
                panic("%s: hgc_cqe_accbad_intr (0x%x) found: \
                       Ram address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_CQE_ECC_MB_ADDR_MSK) >>
                      HGC_CQE_ECC_MB_ADDR_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM0_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
                panic("%s: rxm_mem0_accbad_intr (0x%x) found: \
                       memory address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_RXM_DFX_STATUS14_MEM0_MSK) >>
                      HGC_RXM_DFX_STATUS14_MEM0_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM1_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
                panic("%s: rxm_mem1_accbad_intr (0x%x) found: \
                       memory address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_RXM_DFX_STATUS14_MEM1_MSK) >>
                      HGC_RXM_DFX_STATUS14_MEM1_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM2_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS14);
                panic("%s: rxm_mem2_accbad_intr (0x%x) found: \
                       memory address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_RXM_DFX_STATUS14_MEM2_MSK) >>
                      HGC_RXM_DFX_STATUS14_MEM2_OFF);
        }

        if (irq_value & BIT(SAS_ECC_INTR_NCQ_MEM3_ECC_MB_OFF)) {
                reg_val = hisi_sas_read32(hisi_hba, HGC_RXM_DFX_STATUS15);
                panic("%s: rxm_mem3_accbad_intr (0x%x) found: \
                       memory address is 0x%08X\n",
                      dev_name(dev), irq_value,
                      (reg_val & HGC_RXM_DFX_STATUS15_MEM3_MSK) >>
                      HGC_RXM_DFX_STATUS15_MEM3_OFF);
        }

}

static irqreturn_t fatal_ecc_int_v2_hw(int irq_no, void *p)
{
        struct hisi_hba *hisi_hba = p;
        u32 irq_value, irq_msk;

        irq_msk = hisi_sas_read32(hisi_hba, SAS_ECC_INTR_MSK);
        hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, irq_msk | 0xffffffff);

        irq_value = hisi_sas_read32(hisi_hba, SAS_ECC_INTR);
        if (irq_value) {
                one_bit_ecc_error_process_v2_hw(hisi_hba, irq_value);
                multi_bit_ecc_error_process_v2_hw(hisi_hba, irq_value);
        }

        hisi_sas_write32(hisi_hba, SAS_ECC_INTR, irq_value);
        hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, irq_msk);

        return IRQ_HANDLED;
}

#define AXI_ERR_NR      8
static const char axi_err_info[AXI_ERR_NR][32] = {
        "IOST_AXI_W_ERR",
        "IOST_AXI_R_ERR",
        "ITCT_AXI_W_ERR",
        "ITCT_AXI_R_ERR",
        "SATA_AXI_W_ERR",
        "SATA_AXI_R_ERR",
        "DQE_AXI_R_ERR",
        "CQE_AXI_W_ERR"
};

#define FIFO_ERR_NR     5
static const char fifo_err_info[FIFO_ERR_NR][32] = {
        "CQE_WINFO_FIFO",
        "CQE_MSG_FIFIO",
        "GETDQE_FIFO",
        "CMDP_FIFO",
        "AWTCTRL_FIFO"
};

static irqreturn_t fatal_axi_int_v2_hw(int irq_no, void *p)
{
        struct hisi_hba *hisi_hba = p;
        u32 irq_value, irq_msk, err_value;
        struct device *dev = &hisi_hba->pdev->dev;

        irq_msk = hisi_sas_read32(hisi_hba, ENT_INT_SRC_MSK3);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, irq_msk | 0xfffffffe);

        irq_value = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
        if (irq_value) {
                if (irq_value & BIT(ENT_INT_SRC3_WP_DEPTH_OFF)) {
                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                        1 << ENT_INT_SRC3_WP_DEPTH_OFF);
                        panic("%s: write pointer and depth error (0x%x) \
                               found!\n",
                              dev_name(dev), irq_value);
                }

                if (irq_value & BIT(ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF)) {
                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                         1 <<
                                         ENT_INT_SRC3_IPTT_SLOT_NOMATCH_OFF);
                        panic("%s: iptt no match slot error (0x%x) found!\n",
                              dev_name(dev), irq_value);
                }

                if (irq_value & BIT(ENT_INT_SRC3_RP_DEPTH_OFF))
                        panic("%s: read pointer and depth error (0x%x) \
                               found!\n",
                              dev_name(dev), irq_value);

                if (irq_value & BIT(ENT_INT_SRC3_AXI_OFF)) {
                        int i;

                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                        1 << ENT_INT_SRC3_AXI_OFF);
                        err_value = hisi_sas_read32(hisi_hba,
                                                    HGC_AXI_FIFO_ERR_INFO);

                        for (i = 0; i < AXI_ERR_NR; i++) {
                                if (err_value & BIT(i))
                                        panic("%s: %s (0x%x) found!\n",
                                               dev_name(dev),
                                              axi_err_info[i], irq_value);
                        }
                }

                if (irq_value & BIT(ENT_INT_SRC3_FIFO_OFF)) {
                        int i;

                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                        1 << ENT_INT_SRC3_FIFO_OFF);
                        err_value = hisi_sas_read32(hisi_hba,
                                                    HGC_AXI_FIFO_ERR_INFO);

                        for (i = 0; i < FIFO_ERR_NR; i++) {
                                if (err_value & BIT(AXI_ERR_NR + i))
                                        panic("%s: %s (0x%x) found!\n",
                                              dev_name(dev),
                                              fifo_err_info[i], irq_value);
                        }

                }

                if (irq_value & BIT(ENT_INT_SRC3_LM_OFF)) {
                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                        1 << ENT_INT_SRC3_LM_OFF);
                        panic("%s: LM add/fetch list error (0x%x) found!\n",
                              dev_name(dev), irq_value);
                }

                if (irq_value & BIT(ENT_INT_SRC3_ABT_OFF)) {
                        hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
                                        1 << ENT_INT_SRC3_ABT_OFF);
                        panic("%s: SAS_HGC_ABT fetch LM list error (0x%x) found!\n",
                              dev_name(dev), irq_value);
                }
        }

        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, irq_msk);

        return IRQ_HANDLED;
}

static void cq_tasklet_v2_hw(unsigned long val)
{
        struct hisi_sas_cq *cq = (struct hisi_sas_cq *)val;
        struct hisi_hba *hisi_hba = cq->hisi_hba;
        struct hisi_sas_slot *slot;
        struct hisi_sas_itct *itct;
        struct hisi_sas_complete_v2_hdr *complete_queue;
        u32 rd_point = cq->rd_point, wr_point, dev_id;
        int queue = cq->id;

        if (unlikely(hisi_hba->reject_stp_links_msk))
                phys_try_accept_stp_links_v2_hw(hisi_hba);

        complete_queue = hisi_hba->complete_hdr[queue];

        spin_lock(&hisi_hba->lock);
        wr_point = hisi_sas_read32(hisi_hba, COMPL_Q_0_WR_PTR +
                                   (0x14 * queue));

        while (rd_point != wr_point) {
                struct hisi_sas_complete_v2_hdr *complete_hdr;
                int iptt;

                complete_hdr = &complete_queue[rd_point];

                /* Check for NCQ completion */
                if (complete_hdr->act) {
                        u32 act_tmp = complete_hdr->act;
                        int ncq_tag_count = ffs(act_tmp);

                        dev_id = (complete_hdr->dw1 & CMPLT_HDR_DEV_ID_MSK) >>
                                 CMPLT_HDR_DEV_ID_OFF;
                        itct = &hisi_hba->itct[dev_id];

                        /* The NCQ tags are held in the itct header */
                        while (ncq_tag_count) {
                                __le64 *ncq_tag = &itct->qw4_15[0];

                                ncq_tag_count -= 1;
                                iptt = (ncq_tag[ncq_tag_count / 5]
                                        >> (ncq_tag_count % 5) * 12) & 0xfff;

                                slot = &hisi_hba->slot_info[iptt];
                                slot->cmplt_queue_slot = rd_point;
                                slot->cmplt_queue = queue;
                                slot_complete_v2_hw(hisi_hba, slot);

                                act_tmp &= ~(1 << ncq_tag_count);
                                ncq_tag_count = ffs(act_tmp);
                        }
                } else {
                        iptt = (complete_hdr->dw1) & CMPLT_HDR_IPTT_MSK;
                        slot = &hisi_hba->slot_info[iptt];
                        slot->cmplt_queue_slot = rd_point;
                        slot->cmplt_queue = queue;
                        slot_complete_v2_hw(hisi_hba, slot);
                }

                if (++rd_point >= HISI_SAS_QUEUE_SLOTS)
                        rd_point = 0;
        }

        /* update rd_point */
        cq->rd_point = rd_point;
        hisi_sas_write32(hisi_hba, COMPL_Q_0_RD_PTR + (0x14 * queue), rd_point);
        spin_unlock(&hisi_hba->lock);
}

static irqreturn_t cq_interrupt_v2_hw(int irq_no, void *p)
{
        struct hisi_sas_cq *cq = p;
        struct hisi_hba *hisi_hba = cq->hisi_hba;
        int queue = cq->id;

        hisi_sas_write32(hisi_hba, OQ_INT_SRC, 1 << queue);

        tasklet_schedule(&cq->tasklet);

        return IRQ_HANDLED;
}

static irqreturn_t sata_int_v2_hw(int irq_no, void *p)
{
        struct hisi_sas_phy *phy = p;
        struct hisi_hba *hisi_hba = phy->hisi_hba;
        struct asd_sas_phy *sas_phy = &phy->sas_phy;
        struct device *dev = &hisi_hba->pdev->dev;
        struct  hisi_sas_initial_fis *initial_fis;
        struct dev_to_host_fis *fis;
        u32 ent_tmp, ent_msk, ent_int, port_id, link_rate, hard_phy_linkrate;
        irqreturn_t res = IRQ_HANDLED;
        u8 attached_sas_addr[SAS_ADDR_SIZE] = {0};
        int phy_no, offset;

        phy_no = sas_phy->id;
        initial_fis = &hisi_hba->initial_fis[phy_no];
        fis = &initial_fis->fis;

        offset = 4 * (phy_no / 4);
        ent_msk = hisi_sas_read32(hisi_hba, ENT_INT_SRC_MSK1 + offset);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1 + offset,
                         ent_msk | 1 << ((phy_no % 4) * 8));

        ent_int = hisi_sas_read32(hisi_hba, ENT_INT_SRC1 + offset);
        ent_tmp = ent_int & (1 << (ENT_INT_SRC1_D2H_FIS_CH1_OFF *
                             (phy_no % 4)));
        ent_int >>= ENT_INT_SRC1_D2H_FIS_CH1_OFF * (phy_no % 4);
        if ((ent_int & ENT_INT_SRC1_D2H_FIS_CH0_MSK) == 0) {
                dev_warn(dev, "sata int: phy%d did not receive FIS\n", phy_no);
                res = IRQ_NONE;
                goto end;
        }

        /* check ERR bit of Status Register */
        if (fis->status & ATA_ERR) {
                dev_warn(dev, "sata int: phy%d FIS status: 0x%x\n", phy_no,
                                fis->status);
                disable_phy_v2_hw(hisi_hba, phy_no);
                enable_phy_v2_hw(hisi_hba, phy_no);
                res = IRQ_NONE;
                goto end;
        }

        if (unlikely(phy_no == 8)) {
                u32 port_state = hisi_sas_read32(hisi_hba, PORT_STATE);

                port_id = (port_state & PORT_STATE_PHY8_PORT_NUM_MSK) >>
                          PORT_STATE_PHY8_PORT_NUM_OFF;
                link_rate = (port_state & PORT_STATE_PHY8_CONN_RATE_MSK) >>
                            PORT_STATE_PHY8_CONN_RATE_OFF;
        } else {
                port_id = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
                port_id = (port_id >> (4 * phy_no)) & 0xf;
                link_rate = hisi_sas_read32(hisi_hba, PHY_CONN_RATE);
                link_rate = (link_rate >> (phy_no * 4)) & 0xf;
        }

        if (port_id == 0xf) {
                dev_err(dev, "sata int: phy%d invalid portid\n", phy_no);
                res = IRQ_NONE;
                goto end;
        }

        sas_phy->linkrate = link_rate;
        hard_phy_linkrate = hisi_sas_phy_read32(hisi_hba, phy_no,
                                                HARD_PHY_LINKRATE);
        phy->maximum_linkrate = hard_phy_linkrate & 0xf;
        phy->minimum_linkrate = (hard_phy_linkrate >> 4) & 0xf;

        sas_phy->oob_mode = SATA_OOB_MODE;
        /* Make up some unique SAS address */
        attached_sas_addr[0] = 0x50;
        attached_sas_addr[7] = phy_no;
        memcpy(sas_phy->attached_sas_addr, attached_sas_addr, SAS_ADDR_SIZE);
        memcpy(sas_phy->frame_rcvd, fis, sizeof(struct dev_to_host_fis));
        dev_info(dev, "sata int phyup: phy%d link_rate=%d\n", phy_no, link_rate);
        phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
        phy->port_id = port_id;
        phy->phy_type |= PORT_TYPE_SATA;
        phy->phy_attached = 1;
        phy->identify.device_type = SAS_SATA_DEV;
        phy->frame_rcvd_size = sizeof(struct dev_to_host_fis);
        phy->identify.target_port_protocols = SAS_PROTOCOL_SATA;
        queue_work(hisi_hba->wq, &phy->phyup_ws);

end:
        hisi_sas_write32(hisi_hba, ENT_INT_SRC1 + offset, ent_tmp);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1 + offset, ent_msk);

        return res;
}

static irq_handler_t phy_interrupts[HISI_SAS_PHY_INT_NR] = {
        int_phy_updown_v2_hw,
        int_chnl_int_v2_hw,
};

static irq_handler_t fatal_interrupts[HISI_SAS_FATAL_INT_NR] = {
        fatal_ecc_int_v2_hw,
        fatal_axi_int_v2_hw
};

/**
 * There is a limitation in the hip06 chipset that we need
 * to map in all mbigen interrupts, even if they are not used.
 */
static int interrupt_init_v2_hw(struct hisi_hba *hisi_hba)
{
        struct platform_device *pdev = hisi_hba->pdev;
        struct device *dev = &pdev->dev;
        int i, irq, rc, irq_map[128];


        for (i = 0; i < 128; i++)
                irq_map[i] = platform_get_irq(pdev, i);

        for (i = 0; i < HISI_SAS_PHY_INT_NR; i++) {
                int idx = i;

                irq = irq_map[idx + 1]; /* Phy up/down is irq1 */
                if (!irq) {
                        dev_err(dev, "irq init: fail map phy interrupt %d\n",
                                idx);
                        return -ENOENT;
                }

                rc = devm_request_irq(dev, irq, phy_interrupts[i], 0,
                                      DRV_NAME " phy", hisi_hba);
                if (rc) {
                        dev_err(dev, "irq init: could not request "
                                "phy interrupt %d, rc=%d\n",
                                irq, rc);
                        return -ENOENT;
                }
        }

        for (i = 0; i < hisi_hba->n_phy; i++) {
                struct hisi_sas_phy *phy = &hisi_hba->phy[i];
                int idx = i + 72; /* First SATA interrupt is irq72 */

                irq = irq_map[idx];
                if (!irq) {
                        dev_err(dev, "irq init: fail map phy interrupt %d\n",
                                idx);
                        return -ENOENT;
                }

                rc = devm_request_irq(dev, irq, sata_int_v2_hw, 0,
                                      DRV_NAME " sata", phy);
                if (rc) {
                        dev_err(dev, "irq init: could not request "
                                "sata interrupt %d, rc=%d\n",
                                irq, rc);
                        return -ENOENT;
                }
        }

        for (i = 0; i < HISI_SAS_FATAL_INT_NR; i++) {
                int idx = i;

                irq = irq_map[idx + 81];
                if (!irq) {
                        dev_err(dev, "irq init: fail map fatal interrupt %d\n",
                                idx);
                        return -ENOENT;
                }

                rc = devm_request_irq(dev, irq, fatal_interrupts[i], 0,
                                      DRV_NAME " fatal", hisi_hba);
                if (rc) {
                        dev_err(dev,
                                "irq init: could not request fatal interrupt %d, rc=%d\n",
                                irq, rc);
                        return -ENOENT;
                }
        }

        for (i = 0; i < hisi_hba->queue_count; i++) {
                int idx = i + 96; /* First cq interrupt is irq96 */
                struct hisi_sas_cq *cq = &hisi_hba->cq[i];
                struct tasklet_struct *t = &cq->tasklet;

                irq = irq_map[idx];
                if (!irq) {
                        dev_err(dev,
                                "irq init: could not map cq interrupt %d\n",
                                idx);
                        return -ENOENT;
                }
                rc = devm_request_irq(dev, irq, cq_interrupt_v2_hw, 0,
                                      DRV_NAME " cq", &hisi_hba->cq[i]);
                if (rc) {
                        dev_err(dev,
                                "irq init: could not request cq interrupt %d, rc=%d\n",
                                irq, rc);
                        return -ENOENT;
                }
                tasklet_init(t, cq_tasklet_v2_hw, (unsigned long)cq);
        }

        return 0;
}

static int hisi_sas_v2_init(struct hisi_hba *hisi_hba)
{
        int rc;

        memset(hisi_hba->sata_dev_bitmap, 0, sizeof(hisi_hba->sata_dev_bitmap));

        rc = hw_init_v2_hw(hisi_hba);
        if (rc)
                return rc;

        rc = interrupt_init_v2_hw(hisi_hba);
        if (rc)
                return rc;

        return 0;
}

static void interrupt_disable_v2_hw(struct hisi_hba *hisi_hba)
{
        struct platform_device *pdev = hisi_hba->pdev;
        int i;

        for (i = 0; i < hisi_hba->queue_count; i++)
                hisi_sas_write32(hisi_hba, OQ0_INT_SRC_MSK + 0x4 * i, 0x1);

        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1, 0xffffffff);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK2, 0xffffffff);
        hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, 0xffffffff);
        hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0xffffffff);

        for (i = 0; i < hisi_hba->n_phy; i++) {
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK, 0xffffffff);
                hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0xffffffff);
        }

        for (i = 0; i < 128; i++)
                synchronize_irq(platform_get_irq(pdev, i));
}

static int soft_reset_v2_hw(struct hisi_hba *hisi_hba)
{
        struct device *dev = &hisi_hba->pdev->dev;
        u32 old_state, state;
        int rc, cnt;
        int phy_no;

        old_state = hisi_sas_read32(hisi_hba, PHY_STATE);

        interrupt_disable_v2_hw(hisi_hba);
        hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0x0);

        stop_phys_v2_hw(hisi_hba);

        mdelay(10);

        hisi_sas_write32(hisi_hba, AXI_MASTER_CFG_BASE + AM_CTRL_GLOBAL, 0x1);

        /* wait until bus idle */
        cnt = 0;
        while (1) {
                u32 status = hisi_sas_read32_relaxed(hisi_hba,
                                AXI_MASTER_CFG_BASE + AM_CURR_TRANS_RETURN);

                if (status == 0x3)
                        break;

                udelay(10);
                if (cnt++ > 10) {
                        dev_info(dev, "wait axi bus state to idle timeout!\n");
                        return -1;
                }
        }

        hisi_sas_init_mem(hisi_hba);

        rc = hw_init_v2_hw(hisi_hba);
        if (rc)
                return rc;

        phys_reject_stp_links_v2_hw(hisi_hba);

        /* Re-enable the PHYs */
        for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
                struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
                struct asd_sas_phy *sas_phy = &phy->sas_phy;

                if (sas_phy->enabled)
                        start_phy_v2_hw(hisi_hba, phy_no);
        }

        /* Wait for the PHYs to come up and read the PHY state */
        msleep(1000);

        state = hisi_sas_read32(hisi_hba, PHY_STATE);

        hisi_sas_rescan_topology(hisi_hba, old_state, state);

        return 0;
}

static const struct hisi_sas_hw hisi_sas_v2_hw = {
        .hw_init = hisi_sas_v2_init,
        .setup_itct = setup_itct_v2_hw,
        .slot_index_alloc = slot_index_alloc_quirk_v2_hw,
        .alloc_dev = alloc_dev_quirk_v2_hw,
        .sl_notify = sl_notify_v2_hw,
        .get_wideport_bitmap = get_wideport_bitmap_v2_hw,
        .free_device = free_device_v2_hw,
        .prep_smp = prep_smp_v2_hw,
        .prep_ssp = prep_ssp_v2_hw,
        .prep_stp = prep_ata_v2_hw,
        .prep_abort = prep_abort_v2_hw,
        .get_free_slot = get_free_slot_v2_hw,
        .start_delivery = start_delivery_v2_hw,
        .slot_complete = slot_complete_v2_hw,
        .phys_init = phys_init_v2_hw,
        .phy_enable = enable_phy_v2_hw,
        .phy_disable = disable_phy_v2_hw,
        .phy_hard_reset = phy_hard_reset_v2_hw,
        .phy_set_linkrate = phy_set_linkrate_v2_hw,
        .phy_get_max_linkrate = phy_get_max_linkrate_v2_hw,
        .max_command_entries = HISI_SAS_COMMAND_ENTRIES_V2_HW,
        .complete_hdr_size = sizeof(struct hisi_sas_complete_v2_hdr),
        .soft_reset = soft_reset_v2_hw,
};

static int hisi_sas_v2_probe(struct platform_device *pdev)
{
        /*
         * Check if we should defer the probe before we probe the
         * upper layer, as it's hard to defer later on.
         */
        int ret = platform_get_irq(pdev, 0);

        if (ret < 0) {
                if (ret != -EPROBE_DEFER)
                        dev_err(&pdev->dev, "cannot obtain irq\n");
                return ret;
        }

        return hisi_sas_probe(pdev, &hisi_sas_v2_hw);
}

static int hisi_sas_v2_remove(struct platform_device *pdev)
{
        struct sas_ha_struct *sha = platform_get_drvdata(pdev);
        struct hisi_hba *hisi_hba = sha->lldd_ha;

        if (timer_pending(&hisi_hba->timer))
                del_timer(&hisi_hba->timer);

        return hisi_sas_remove(pdev);
}

static const struct of_device_id sas_v2_of_match[] = {
        { .compatible = "hisilicon,hip06-sas-v2",},
        { .compatible = "hisilicon,hip07-sas-v2",},
        {},
};
MODULE_DEVICE_TABLE(of, sas_v2_of_match);

static const struct acpi_device_id sas_v2_acpi_match[] = {
        { "HISI0162", 0 },
        { }
};

MODULE_DEVICE_TABLE(acpi, sas_v2_acpi_match);

static struct platform_driver hisi_sas_v2_driver = {
        .probe = hisi_sas_v2_probe,
        .remove = hisi_sas_v2_remove,
        .driver = {
                .name = DRV_NAME,
                .of_match_table = sas_v2_of_match,
                .acpi_match_table = ACPI_PTR(sas_v2_acpi_match),
        },
};

module_platform_driver(hisi_sas_v2_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
MODULE_DESCRIPTION("HISILICON SAS controller v2 hw driver");
MODULE_ALIAS("platform:" DRV_NAME);