linux/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c

/*
 * Copyright (c) 2015 Linaro Ltd.
 * Copyright (c) 2015 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_v1_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 BROKEN_MSG_ADDR_LO		0x18
#define BROKEN_MSG_ADDR_HI		0x1c
#define PHY_CONTEXT			0x20
#define PHY_STATE			0x24
#define PHY_PORT_NUM_MA			0x28
#define PORT_STATE			0x2c
#define PHY_CONN_RATE			0x30
#define HGC_TRANS_TASK_CNT_LIMIT	0x38
#define AXI_AHB_CLK_CFG			0x3c
#define HGC_SAS_TXFAIL_RETRY_CTRL	0x84
#define HGC_GET_ITV_TIME		0x90
#define DEVICE_MSG_WORK_MODE		0x94
#define I_T_NEXUS_LOSS_TIME		0xa0
#define BUS_INACTIVE_LIMIT_TIME		0xa8
#define REJECT_TO_OPEN_LIMIT_TIME	0xac
#define CFG_AGING_TIME			0xbc
#define CFG_AGING_TIME_ITCT_REL_OFF	0
#define CFG_AGING_TIME_ITCT_REL_MSK	(0x1 << CFG_AGING_TIME_ITCT_REL_OFF)
#define HGC_DFX_CFG2			0xc0
#define FIS_LIST_BADDR_L		0xc4
#define CFG_1US_TIMER_TRSH		0xcc
#define CFG_SAS_CONFIG			0xd4
#define HGC_IOST_ECC_ADDR		0x140
#define HGC_IOST_ECC_ADDR_BAD_OFF	16
#define HGC_IOST_ECC_ADDR_BAD_MSK	(0x3ff << HGC_IOST_ECC_ADDR_BAD_OFF)
#define HGC_DQ_ECC_ADDR			0x144
#define HGC_DQ_ECC_ADDR_BAD_OFF		16
#define HGC_DQ_ECC_ADDR_BAD_MSK		(0xfff << HGC_DQ_ECC_ADDR_BAD_OFF)
#define HGC_INVLD_DQE_INFO		0x148
#define HGC_INVLD_DQE_INFO_DQ_OFF	0
#define HGC_INVLD_DQE_INFO_DQ_MSK	(0xffff << HGC_INVLD_DQE_INFO_DQ_OFF)
#define HGC_INVLD_DQE_INFO_TYPE_OFF	16
#define HGC_INVLD_DQE_INFO_TYPE_MSK	(0x1 << HGC_INVLD_DQE_INFO_TYPE_OFF)
#define HGC_INVLD_DQE_INFO_FORCE_OFF	17
#define HGC_INVLD_DQE_INFO_FORCE_MSK	(0x1 << HGC_INVLD_DQE_INFO_FORCE_OFF)
#define HGC_INVLD_DQE_INFO_PHY_OFF	18
#define HGC_INVLD_DQE_INFO_PHY_MSK	(0x1 << HGC_INVLD_DQE_INFO_PHY_OFF)
#define HGC_INVLD_DQE_INFO_ABORT_OFF	19
#define HGC_INVLD_DQE_INFO_ABORT_MSK	(0x1 << HGC_INVLD_DQE_INFO_ABORT_OFF)
#define HGC_INVLD_DQE_INFO_IPTT_OF_OFF	20
#define HGC_INVLD_DQE_INFO_IPTT_OF_MSK	(0x1 << HGC_INVLD_DQE_INFO_IPTT_OF_OFF)
#define HGC_INVLD_DQE_INFO_SSP_ERR_OFF	21
#define HGC_INVLD_DQE_INFO_SSP_ERR_MSK	(0x1 << HGC_INVLD_DQE_INFO_SSP_ERR_OFF)
#define HGC_INVLD_DQE_INFO_OFL_OFF	22
#define HGC_INVLD_DQE_INFO_OFL_MSK	(0x1 << HGC_INVLD_DQE_INFO_OFL_OFF)
#define HGC_ITCT_ECC_ADDR		0x150
#define HGC_ITCT_ECC_ADDR_BAD_OFF	16
#define HGC_ITCT_ECC_ADDR_BAD_MSK	(0x3ff << HGC_ITCT_ECC_ADDR_BAD_OFF)
#define HGC_AXI_FIFO_ERR_INFO		0x154
#define INT_COAL_EN			0x1bc
#define OQ_INT_COAL_TIME		0x1c0
#define OQ_INT_COAL_CNT			0x1c4
#define ENT_INT_COAL_TIME		0x1c8
#define ENT_INT_COAL_CNT		0x1cc
#define OQ_INT_SRC			0x1d0
#define OQ_INT_SRC_MSK			0x1d4
#define ENT_INT_SRC1			0x1d8
#define ENT_INT_SRC2			0x1dc
#define ENT_INT_SRC2_DQ_CFG_ERR_OFF	25
#define ENT_INT_SRC2_DQ_CFG_ERR_MSK	(0x1 << ENT_INT_SRC2_DQ_CFG_ERR_OFF)
#define ENT_INT_SRC2_CQ_CFG_ERR_OFF	27
#define ENT_INT_SRC2_CQ_CFG_ERR_MSK	(0x1 << ENT_INT_SRC2_CQ_CFG_ERR_OFF)
#define ENT_INT_SRC2_AXI_WRONG_INT_OFF	28
#define ENT_INT_SRC2_AXI_WRONG_INT_MSK	(0x1 << ENT_INT_SRC2_AXI_WRONG_INT_OFF)
#define ENT_INT_SRC2_AXI_OVERLF_INT_OFF	29
#define ENT_INT_SRC2_AXI_OVERLF_INT_MSK	(0x1 << ENT_INT_SRC2_AXI_OVERLF_INT_OFF)
#define ENT_INT_SRC_MSK1		0x1e0
#define ENT_INT_SRC_MSK2		0x1e4
#define SAS_ECC_INTR			0x1e8
#define SAS_ECC_INTR_DQ_ECC1B_OFF	0
#define SAS_ECC_INTR_DQ_ECC1B_MSK	(0x1 << SAS_ECC_INTR_DQ_ECC1B_OFF)
#define SAS_ECC_INTR_DQ_ECCBAD_OFF	1
#define SAS_ECC_INTR_DQ_ECCBAD_MSK	(0x1 << SAS_ECC_INTR_DQ_ECCBAD_OFF)
#define SAS_ECC_INTR_IOST_ECC1B_OFF	2
#define SAS_ECC_INTR_IOST_ECC1B_MSK	(0x1 << SAS_ECC_INTR_IOST_ECC1B_OFF)
#define SAS_ECC_INTR_IOST_ECCBAD_OFF	3
#define SAS_ECC_INTR_IOST_ECCBAD_MSK	(0x1 << SAS_ECC_INTR_IOST_ECCBAD_OFF)
#define SAS_ECC_INTR_ITCT_ECC1B_OFF	4
#define SAS_ECC_INTR_ITCT_ECC1B_MSK	(0x1 << SAS_ECC_INTR_ITCT_ECC1B_OFF)
#define SAS_ECC_INTR_ITCT_ECCBAD_OFF	5
#define SAS_ECC_INTR_ITCT_ECCBAD_MSK	(0x1 << SAS_ECC_INTR_ITCT_ECCBAD_OFF)
#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 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_ECC_ERR			0x7d0

/* phy registers need init */
#define PORT_BASE			(0x800)

#define PHY_CFG				(PORT_BASE + 0x0)
#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 + 0xc)
#define PROG_PHY_LINK_RATE_MAX_OFF	0
#define PROG_PHY_LINK_RATE_MAX_MSK	(0xf << PROG_PHY_LINK_RATE_MAX_OFF)
#define PROG_PHY_LINK_RATE_MIN_OFF	4
#define PROG_PHY_LINK_RATE_MIN_MSK	(0xf << PROG_PHY_LINK_RATE_MIN_OFF)
#define PROG_PHY_LINK_RATE_OOB_OFF	8
#define PROG_PHY_LINK_RATE_OOB_MSK	(0xf << PROG_PHY_LINK_RATE_OOB_OFF)
#define PHY_CTRL			(PORT_BASE + 0x14)
#define PHY_CTRL_RESET_OFF		0
#define PHY_CTRL_RESET_MSK		(0x1 << PHY_CTRL_RESET_OFF)
#define PHY_RATE_NEGO			(PORT_BASE + 0x30)
#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 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 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 DONE_RECEIVED_TIME		(PORT_BASE + 0x12c)
#define CON_CFG_DRIVER			(PORT_BASE + 0x130)
#define PHY_CONFIG2			(PORT_BASE + 0x1a8)
#define PHY_CONFIG2_FORCE_TXDEEMPH_OFF	3
#define PHY_CONFIG2_FORCE_TXDEEMPH_MSK	(0x1 << PHY_CONFIG2_FORCE_TXDEEMPH_OFF)
#define PHY_CONFIG2_TX_TRAIN_COMP_OFF	24
#define PHY_CONFIG2_TX_TRAIN_COMP_MSK	(0x1 << PHY_CONFIG2_TX_TRAIN_COMP_OFF)
#define CHL_INT0			(PORT_BASE + 0x1b0)
#define CHL_INT0_PHYCTRL_NOTRDY_OFF	0
#define CHL_INT0_PHYCTRL_NOTRDY_MSK	(0x1 << CHL_INT0_PHYCTRL_NOTRDY_OFF)
#define CHL_INT0_SN_FAIL_NGR_OFF	2
#define CHL_INT0_SN_FAIL_NGR_MSK	(0x1 << CHL_INT0_SN_FAIL_NGR_OFF)
#define CHL_INT0_DWS_LOST_OFF		4
#define CHL_INT0_DWS_LOST_MSK		(0x1 << CHL_INT0_DWS_LOST_OFF)
#define CHL_INT0_SL_IDAF_FAIL_OFF	10
#define CHL_INT0_SL_IDAF_FAIL_MSK	(0x1 << CHL_INT0_SL_IDAF_FAIL_OFF)
#define CHL_INT0_ID_TIMEOUT_OFF		11
#define CHL_INT0_ID_TIMEOUT_MSK		(0x1 << CHL_INT0_ID_TIMEOUT_OFF)
#define CHL_INT0_SL_OPAF_FAIL_OFF	12
#define CHL_INT0_SL_OPAF_FAIL_MSK	(0x1 << CHL_INT0_SL_OPAF_FAIL_OFF)
#define CHL_INT0_SL_PS_FAIL_OFF		21
#define CHL_INT0_SL_PS_FAIL_MSK		(0x1 << CHL_INT0_SL_PS_FAIL_OFF)
#define CHL_INT1			(PORT_BASE + 0x1b4)
#define CHL_INT2			(PORT_BASE + 0x1b8)
#define CHL_INT2_SL_RX_BC_ACK_OFF	2
#define CHL_INT2_SL_RX_BC_ACK_MSK	(0x1 << CHL_INT2_SL_RX_BC_ACK_OFF)
#define CHL_INT2_SL_PHY_ENA_OFF		6
#define CHL_INT2_SL_PHY_ENA_MSK		(0x1 << CHL_INT2_SL_PHY_ENA_OFF)
#define CHL_INT0_MSK			(PORT_BASE + 0x1bc)
#define CHL_INT0_MSK_PHYCTRL_NOTRDY_OFF	0
#define CHL_INT0_MSK_PHYCTRL_NOTRDY_MSK	(0x1 << CHL_INT0_MSK_PHYCTRL_NOTRDY_OFF)
#define CHL_INT1_MSK			(PORT_BASE + 0x1c0)
#define CHL_INT2_MSK			(PORT_BASE + 0x1c4)
#define CHL_INT_COAL_EN			(PORT_BASE + 0x1d0)
#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 RESET_VALUE			0x7ffff

/* HW dma structures */
/* Delivery queue header */
/* dw0 */
#define CMD_HDR_RESP_REPORT_OFF		5
#define CMD_HDR_RESP_REPORT_MSK		0x20
#define CMD_HDR_TLR_CTRL_OFF		6
#define CMD_HDR_TLR_CTRL_MSK		0xc0
#define CMD_HDR_PORT_OFF		17
#define CMD_HDR_PORT_MSK		0xe0000
#define CMD_HDR_PRIORITY_OFF		27
#define CMD_HDR_PRIORITY_MSK		0x8000000
#define CMD_HDR_MODE_OFF		28
#define CMD_HDR_MODE_MSK		0x10000000
#define CMD_HDR_CMD_OFF			29
#define CMD_HDR_CMD_MSK			0xe0000000
/* dw1 */
#define CMD_HDR_VERIFY_DTL_OFF		10
#define CMD_HDR_VERIFY_DTL_MSK		0x400
#define CMD_HDR_SSP_FRAME_TYPE_OFF	13
#define CMD_HDR_SSP_FRAME_TYPE_MSK	0xe000
#define CMD_HDR_DEVICE_ID_OFF		16
#define CMD_HDR_DEVICE_ID_MSK		0xffff0000
/* dw2 */
#define CMD_HDR_CFL_OFF			0
#define CMD_HDR_CFL_MSK			0x1ff
#define CMD_HDR_MRFL_OFF		15
#define CMD_HDR_MRFL_MSK		0xff8000
#define CMD_HDR_FIRST_BURST_OFF		25
#define CMD_HDR_FIRST_BURST_MSK		0x2000000
/* dw3 */
#define CMD_HDR_IPTT_OFF		0
#define CMD_HDR_IPTT_MSK		0xffff
/* dw6 */
#define CMD_HDR_DATA_SGL_LEN_OFF	16
#define CMD_HDR_DATA_SGL_LEN_MSK	0xffff0000

/* Completion header */
#define CMPLT_HDR_IPTT_OFF		0
#define CMPLT_HDR_IPTT_MSK		(0xffff << CMPLT_HDR_IPTT_OFF)
#define CMPLT_HDR_CMD_CMPLT_OFF		17
#define CMPLT_HDR_CMD_CMPLT_MSK		(0x1 << CMPLT_HDR_CMD_CMPLT_OFF)
#define CMPLT_HDR_ERR_RCRD_XFRD_OFF	18
#define CMPLT_HDR_ERR_RCRD_XFRD_MSK	(0x1 << CMPLT_HDR_ERR_RCRD_XFRD_OFF)
#define CMPLT_HDR_RSPNS_XFRD_OFF	19
#define CMPLT_HDR_RSPNS_XFRD_MSK	(0x1 << CMPLT_HDR_RSPNS_XFRD_OFF)
#define CMPLT_HDR_IO_CFG_ERR_OFF	27
#define CMPLT_HDR_IO_CFG_ERR_MSK	(0x1 << CMPLT_HDR_IO_CFG_ERR_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_BREAK_REPLY_ENA_OFF	3
#define ITCT_HDR_BREAK_REPLY_ENA_MSK	(0x1 << ITCT_HDR_BREAK_REPLY_ENA_OFF)
#define ITCT_HDR_AWT_CONTROL_OFF	4
#define ITCT_HDR_AWT_CONTROL_MSK	(0x1 << ITCT_HDR_AWT_CONTROL_OFF)
#define ITCT_HDR_MAX_CONN_RATE_OFF	5
#define ITCT_HDR_MAX_CONN_RATE_MSK	(0xf << ITCT_HDR_MAX_CONN_RATE_OFF)
#define ITCT_HDR_VALID_LINK_NUM_OFF	9
#define ITCT_HDR_VALID_LINK_NUM_MSK	(0xf << ITCT_HDR_VALID_LINK_NUM_OFF)
#define ITCT_HDR_PORT_ID_OFF		13
#define ITCT_HDR_PORT_ID_MSK		(0x7 << ITCT_HDR_PORT_ID_OFF)
#define ITCT_HDR_SMP_TIMEOUT_OFF	16
#define ITCT_HDR_SMP_TIMEOUT_MSK	(0xffff << ITCT_HDR_SMP_TIMEOUT_OFF)
#define ITCT_HDR_MAX_BURST_BYTES_OFF	16
#define ITCT_HDR_MAX_BURST_BYTES_MSK	(0xffffffff << \
					ITCT_MAX_BURST_BYTES_OFF)
/* qw1 */
#define ITCT_HDR_MAX_SAS_ADDR_OFF	0
#define ITCT_HDR_MAX_SAS_ADDR_MSK	(0xffffffffffffffff << \
					ITCT_HDR_MAX_SAS_ADDR_OFF)
/* qw2 */
#define ITCT_HDR_IT_NEXUS_LOSS_TL_OFF	0
#define ITCT_HDR_IT_NEXUS_LOSS_TL_MSK	(0xffff << \
					ITCT_HDR_IT_NEXUS_LOSS_TL_OFF)
#define ITCT_HDR_BUS_INACTIVE_TL_OFF	16
#define ITCT_HDR_BUS_INACTIVE_TL_MSK	(0xffff << \
					ITCT_HDR_BUS_INACTIVE_TL_OFF)
#define ITCT_HDR_MAX_CONN_TL_OFF	32
#define ITCT_HDR_MAX_CONN_TL_MSK	(0xffff << \
					ITCT_HDR_MAX_CONN_TL_OFF)
#define ITCT_HDR_REJ_OPEN_TL_OFF	48
#define ITCT_HDR_REJ_OPEN_TL_MSK	(0xffff << \
					ITCT_REJ_OPEN_TL_OFF)

/* Err record header */
#define ERR_HDR_DMA_TX_ERR_TYPE_OFF	0
#define ERR_HDR_DMA_TX_ERR_TYPE_MSK	(0xffff << ERR_HDR_DMA_TX_ERR_TYPE_OFF)
#define ERR_HDR_DMA_RX_ERR_TYPE_OFF	16
#define ERR_HDR_DMA_RX_ERR_TYPE_MSK	(0xffff << ERR_HDR_DMA_RX_ERR_TYPE_OFF)

struct hisi_sas_complete_v1_hdr {
	__le32 data;
};

enum {
	HISI_SAS_PHY_BCAST_ACK = 0,
	HISI_SAS_PHY_SL_PHY_ENABLED,
	HISI_SAS_PHY_INT_ABNORMAL,
	HISI_SAS_PHY_INT_NR
};

enum {
	DMA_TX_ERR_BASE = 0x0,
	DMA_RX_ERR_BASE = 0x100,
	TRANS_TX_FAIL_BASE = 0x200,
	TRANS_RX_FAIL_BASE = 0x300,

	/* dma tx */
	DMA_TX_DIF_CRC_ERR = DMA_TX_ERR_BASE, /* 0x0 */
	DMA_TX_DIF_APP_ERR, /* 0x1 */
	DMA_TX_DIF_RPP_ERR, /* 0x2 */
	DMA_TX_AXI_BUS_ERR, /* 0x3 */
	DMA_TX_DATA_SGL_OVERFLOW_ERR, /* 0x4 */
	DMA_TX_DIF_SGL_OVERFLOW_ERR, /* 0x5 */
	DMA_TX_UNEXP_XFER_RDY_ERR, /* 0x6 */
	DMA_TX_XFER_RDY_OFFSET_ERR, /* 0x7 */
	DMA_TX_DATA_UNDERFLOW_ERR, /* 0x8 */
	DMA_TX_XFER_RDY_LENGTH_OVERFLOW_ERR, /* 0x9 */

	/* dma rx */
	DMA_RX_BUFFER_ECC_ERR = DMA_RX_ERR_BASE, /* 0x100 */
	DMA_RX_DIF_CRC_ERR, /* 0x101 */
	DMA_RX_DIF_APP_ERR, /* 0x102 */
	DMA_RX_DIF_RPP_ERR, /* 0x103 */
	DMA_RX_RESP_BUFFER_OVERFLOW_ERR, /* 0x104 */
	DMA_RX_AXI_BUS_ERR, /* 0x105 */
	DMA_RX_DATA_SGL_OVERFLOW_ERR, /* 0x106 */
	DMA_RX_DIF_SGL_OVERFLOW_ERR, /* 0x107 */
	DMA_RX_DATA_OFFSET_ERR, /* 0x108 */
	DMA_RX_UNEXP_RX_DATA_ERR, /* 0x109 */
	DMA_RX_DATA_OVERFLOW_ERR, /* 0x10a */
	DMA_RX_DATA_UNDERFLOW_ERR, /* 0x10b */
	DMA_RX_UNEXP_RETRANS_RESP_ERR, /* 0x10c */

	/* trans tx */
	TRANS_TX_RSVD0_ERR = TRANS_TX_FAIL_BASE, /* 0x200 */
	TRANS_TX_PHY_NOT_ENABLE_ERR, /* 0x201 */
	TRANS_TX_OPEN_REJCT_WRONG_DEST_ERR, /* 0x202 */
	TRANS_TX_OPEN_REJCT_ZONE_VIOLATION_ERR, /* 0x203 */
	TRANS_TX_OPEN_REJCT_BY_OTHER_ERR, /* 0x204 */
	TRANS_TX_RSVD1_ERR, /* 0x205 */
	TRANS_TX_OPEN_REJCT_AIP_TIMEOUT_ERR, /* 0x206 */
	TRANS_TX_OPEN_REJCT_STP_BUSY_ERR, /* 0x207 */
	TRANS_TX_OPEN_REJCT_PROTOCOL_NOT_SUPPORT_ERR, /* 0x208 */
	TRANS_TX_OPEN_REJCT_RATE_NOT_SUPPORT_ERR, /* 0x209 */
	TRANS_TX_OPEN_REJCT_BAD_DEST_ERR, /* 0x20a */
	TRANS_TX_OPEN_BREAK_RECEIVE_ERR, /* 0x20b */
	TRANS_TX_LOW_PHY_POWER_ERR, /* 0x20c */
	TRANS_TX_OPEN_REJCT_PATHWAY_BLOCKED_ERR, /* 0x20d */
	TRANS_TX_OPEN_TIMEOUT_ERR, /* 0x20e */
	TRANS_TX_OPEN_REJCT_NO_DEST_ERR, /* 0x20f */
	TRANS_TX_OPEN_RETRY_ERR, /* 0x210 */
	TRANS_TX_RSVD2_ERR, /* 0x211 */
	TRANS_TX_BREAK_TIMEOUT_ERR, /* 0x212 */
	TRANS_TX_BREAK_REQUEST_ERR, /* 0x213 */
	TRANS_TX_BREAK_RECEIVE_ERR, /* 0x214 */
	TRANS_TX_CLOSE_TIMEOUT_ERR, /* 0x215 */
	TRANS_TX_CLOSE_NORMAL_ERR, /* 0x216 */
	TRANS_TX_CLOSE_PHYRESET_ERR, /* 0x217 */
	TRANS_TX_WITH_CLOSE_DWS_TIMEOUT_ERR, /* 0x218 */
	TRANS_TX_WITH_CLOSE_COMINIT_ERR, /* 0x219 */
	TRANS_TX_NAK_RECEIVE_ERR, /* 0x21a */
	TRANS_TX_ACK_NAK_TIMEOUT_ERR, /* 0x21b */
	TRANS_TX_CREDIT_TIMEOUT_ERR, /* 0x21c */
	TRANS_TX_IPTT_CONFLICT_ERR, /* 0x21d */
	TRANS_TX_TXFRM_TYPE_ERR, /* 0x21e */
	TRANS_TX_TXSMP_LENGTH_ERR, /* 0x21f */

	/* trans rx */
	TRANS_RX_FRAME_CRC_ERR = TRANS_RX_FAIL_BASE, /* 0x300 */
	TRANS_RX_FRAME_DONE_ERR, /* 0x301 */
	TRANS_RX_FRAME_ERRPRM_ERR, /* 0x302 */
	TRANS_RX_FRAME_NO_CREDIT_ERR, /* 0x303 */
	TRANS_RX_RSVD0_ERR, /* 0x304 */
	TRANS_RX_FRAME_OVERRUN_ERR, /* 0x305 */
	TRANS_RX_FRAME_NO_EOF_ERR, /* 0x306 */
	TRANS_RX_LINK_BUF_OVERRUN_ERR, /* 0x307 */
	TRANS_RX_BREAK_TIMEOUT_ERR, /* 0x308 */
	TRANS_RX_BREAK_REQUEST_ERR, /* 0x309 */
	TRANS_RX_BREAK_RECEIVE_ERR, /* 0x30a */
	TRANS_RX_CLOSE_TIMEOUT_ERR, /* 0x30b */
	TRANS_RX_CLOSE_NORMAL_ERR, /* 0x30c */
	TRANS_RX_CLOSE_PHYRESET_ERR, /* 0x30d */
	TRANS_RX_WITH_CLOSE_DWS_TIMEOUT_ERR, /* 0x30e */
	TRANS_RX_WITH_CLOSE_COMINIT_ERR, /* 0x30f */
	TRANS_RX_DATA_LENGTH0_ERR, /* 0x310 */
	TRANS_RX_BAD_HASH_ERR, /* 0x311 */
	TRANS_RX_XRDY_ZERO_ERR, /* 0x312 */
	TRANS_RX_SSP_FRAME_LEN_ERR, /* 0x313 */
	TRANS_RX_TRANS_RX_RSVD1_ERR, /* 0x314 */
	TRANS_RX_NO_BALANCE_ERR, /* 0x315 */
	TRANS_RX_TRANS_RX_RSVD2_ERR, /* 0x316 */
	TRANS_RX_TRANS_RX_RSVD3_ERR, /* 0x317 */
	TRANS_RX_BAD_FRAME_TYPE_ERR, /* 0x318 */
	TRANS_RX_SMP_FRAME_LEN_ERR, /* 0x319 */
	TRANS_RX_SMP_RESP_TIMEOUT_ERR, /* 0x31a */
};

#define HISI_SAS_PHY_MAX_INT_NR (HISI_SAS_PHY_INT_NR * HISI_SAS_MAX_PHYS)
#define HISI_SAS_CQ_MAX_INT_NR (HISI_SAS_MAX_QUEUES)
#define HISI_SAS_FATAL_INT_NR (2)

#define HISI_SAS_MAX_INT_NR \
	(HISI_SAS_PHY_MAX_INT_NR + HISI_SAS_CQ_MAX_INT_NR +\
	HISI_SAS_FATAL_INT_NR)

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);
}

static void config_phy_opt_mode_v1_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_tx_tfe_autoneg_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
{
	u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CONFIG2);

	cfg &= ~PHY_CONFIG2_FORCE_TXDEEMPH_MSK;
	hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CONFIG2, cfg);
}

static void config_id_frame_v1_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,
			identify_buffer[2]);
	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD2,
			identify_buffer[1]);
	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD3,
			identify_buffer[4]);
	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD4,
			identify_buffer[3]);
	hisi_sas_phy_write32(hisi_hba, phy_no, TX_ID_DWORD5,
			__swab32(identify_buffer[5]));
}

static void init_id_frame_v1_hw(struct hisi_hba *hisi_hba)
{
	int i;

	for (i = 0; i < hisi_hba->n_phy; i++)
		config_id_frame_v1_hw(hisi_hba, i);
}

static int reset_hw_v1_hw(struct hisi_hba *hisi_hba)
{
	int i;
	unsigned long end_time;
	u32 val;
	struct device *dev = &hisi_hba->pdev->dev;

	for (i = 0; i < hisi_hba->n_phy; i++) {
		u32 phy_ctrl = hisi_sas_phy_read32(hisi_hba, i, PHY_CTRL);

		phy_ctrl |= PHY_CTRL_RESET_MSK;
		hisi_sas_phy_write32(hisi_hba, i, PHY_CTRL, phy_ctrl);
	}
	msleep(1); /* It is safe to wait for 50us */

	/* 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;
	}

	/* Apply reset and disable clock */
	/* clk disable reg is offset by +4 bytes from clk enable reg */
	regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_reset_reg,
		     RESET_VALUE);
	regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_clock_ena_reg + 4,
		     RESET_VALUE);
	msleep(1);
	regmap_read(hisi_hba->ctrl, hisi_hba->ctrl_reset_sts_reg, &val);
	if (RESET_VALUE != (val & RESET_VALUE)) {
		dev_err(dev, "Reset failed\n");
		return -EIO;
	}

	/* De-reset and enable clock */
	/* deassert rst reg is offset by +4 bytes from assert reg */
	regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_reset_reg + 4,
		     RESET_VALUE);
	regmap_write(hisi_hba->ctrl, hisi_hba->ctrl_clock_ena_reg,
		     RESET_VALUE);
	msleep(1);
	regmap_read(hisi_hba->ctrl, hisi_hba->ctrl_reset_sts_reg, &val);
	if (val & RESET_VALUE) {
		dev_err(dev, "De-reset failed\n");
		return -EIO;
	}

	return 0;
}

static void init_reg_v1_hw(struct hisi_hba *hisi_hba)
{
	int i;

	/* Global registers init*/
	hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE,
			 (u32)((1ULL << hisi_hba->queue_count) - 1));
	hisi_sas_write32(hisi_hba, HGC_TRANS_TASK_CNT_LIMIT, 0x11);
	hisi_sas_write32(hisi_hba, DEVICE_MSG_WORK_MODE, 0x1);
	hisi_sas_write32(hisi_hba, HGC_SAS_TXFAIL_RETRY_CTRL, 0x1ff);
	hisi_sas_write32(hisi_hba, HGC_ERR_STAT_EN, 0x401);
	hisi_sas_write32(hisi_hba, CFG_1US_TIMER_TRSH, 0x64);
	hisi_sas_write32(hisi_hba, HGC_GET_ITV_TIME, 0x1);
	hisi_sas_write32(hisi_hba, I_T_NEXUS_LOSS_TIME, 0x64);
	hisi_sas_write32(hisi_hba, BUS_INACTIVE_LIMIT_TIME, 0x2710);
	hisi_sas_write32(hisi_hba, REJECT_TO_OPEN_LIMIT_TIME, 0x1);
	hisi_sas_write32(hisi_hba, CFG_AGING_TIME, 0x7a12);
	hisi_sas_write32(hisi_hba, HGC_DFX_CFG2, 0x9c40);
	hisi_sas_write32(hisi_hba, FIS_LIST_BADDR_L, 0x2);
	hisi_sas_write32(hisi_hba, INT_COAL_EN, 0xc);
	hisi_sas_write32(hisi_hba, OQ_INT_COAL_TIME, 0x186a0);
	hisi_sas_write32(hisi_hba, OQ_INT_COAL_CNT, 1);
	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, 0xffffffff);
	hisi_sas_write32(hisi_hba, OQ_INT_SRC_MSK, 0);
	hisi_sas_write32(hisi_hba, ENT_INT_SRC1, 0xffffffff);
	hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK1, 0);
	hisi_sas_write32(hisi_hba, ENT_INT_SRC2, 0xffffffff);
	hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK2, 0);
	hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0);
	hisi_sas_write32(hisi_hba, AXI_AHB_CLK_CFG, 0x2);
	hisi_sas_write32(hisi_hba, CFG_SAS_CONFIG, 0x22000000);

	for (i = 0; i < hisi_hba->n_phy; i++) {
		hisi_sas_phy_write32(hisi_hba, i, PROG_PHY_LINK_RATE, 0x88a);
		hisi_sas_phy_write32(hisi_hba, i, PHY_CONFIG2, 0x7c080);
		hisi_sas_phy_write32(hisi_hba, i, PHY_RATE_NEGO, 0x415ee00);
		hisi_sas_phy_write32(hisi_hba, i, PHY_PCN, 0x80a80000);
		hisi_sas_phy_write32(hisi_hba, i, SL_TOUT_CFG, 0x7d7d7d7d);
		hisi_sas_phy_write32(hisi_hba, i, DONE_RECEIVED_TIME, 0x0);
		hisi_sas_phy_write32(hisi_hba, i, RXOP_CHECK_CFG_H, 0x1000);
		hisi_sas_phy_write32(hisi_hba, i, DONE_RECEIVED_TIME, 0);
		hisi_sas_phy_write32(hisi_hba, i, CON_CFG_DRIVER, 0x13f0a);
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT_COAL_EN, 3);
		hisi_sas_phy_write32(hisi_hba, i, DONE_RECEIVED_TIME, 8);
	}

	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, BROKEN_MSG_ADDR_LO,
			 lower_32_bits(hisi_hba->breakpoint_dma));

	hisi_sas_write32(hisi_hba, BROKEN_MSG_ADDR_HI,
			 upper_32_bits(hisi_hba->breakpoint_dma));
}

static int hw_init_v1_hw(struct hisi_hba *hisi_hba)
{
	struct device *dev = &hisi_hba->pdev->dev;
	int rc;

	rc = reset_hw_v1_hw(hisi_hba);
	if (rc) {
		dev_err(dev, "hisi_sas_reset_hw failed, rc=%d", rc);
		return rc;
	}

	msleep(100);
	init_reg_v1_hw(hisi_hba);

	init_id_frame_v1_hw(hisi_hba);

	return 0;
}

static void enable_phy_v1_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 void start_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
{
	config_id_frame_v1_hw(hisi_hba, phy_no);
	config_phy_opt_mode_v1_hw(hisi_hba, phy_no);
	config_tx_tfe_autoneg_v1_hw(hisi_hba, phy_no);
	enable_phy_v1_hw(hisi_hba, phy_no);
}

static void start_phys_v1_hw(unsigned long data)
{
	struct hisi_hba *hisi_hba = (struct hisi_hba *)data;
	int i;

	for (i = 0; i < hisi_hba->n_phy; i++) {
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0x12a);
		start_phy_v1_hw(hisi_hba, i);
	}
}

static void phys_init_v1_hw(struct hisi_hba *hisi_hba)
{
	int i;
	struct timer_list *timer = &hisi_hba->timer;

	for (i = 0; i < hisi_hba->n_phy; i++) {
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0x6a);
		hisi_sas_phy_read32(hisi_hba, i, CHL_INT2_MSK);
	}

	setup_timer(timer, start_phys_v1_hw, (unsigned long)hisi_hba);
	mod_timer(timer, jiffies + HZ);
}

static void sl_notify_v1_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);
}

/**
 * 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_v1_hw(struct hisi_hba *hisi_hba, int *q, int *s)
{
	struct device *dev = &hisi_hba->pdev->dev;
	u32 r, w;
	int queue = hisi_hba->queue;

	while (1) {
		w = hisi_sas_read32_relaxed(hisi_hba,
				    DLVRY_Q_0_WR_PTR + (queue * 0x14));
		r = hisi_sas_read32_relaxed(hisi_hba,
				    DLVRY_Q_0_RD_PTR + (queue * 0x14));
		if (r == (w+1) % HISI_SAS_QUEUE_SLOTS) {
			queue = (queue + 1) % hisi_hba->queue_count;
			if (queue == hisi_hba->queue) {
				dev_warn(dev, "could not find free slot\n");
				return -EAGAIN;
			}
			continue;
		}
		break;
	}
	hisi_hba->queue = (queue + 1) % hisi_hba->queue_count;
	*q = queue;
	*s = w;
	return 0;
}

static void start_delivery_v1_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;

	hisi_sas_write32(hisi_hba,
			 DLVRY_Q_0_WR_PTR + (dlvry_queue * 0x14),
			 ++dlvry_queue_slot % HISI_SAS_QUEUE_SLOTS);
}

static int prep_prd_sge_v1_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_ssp_v1_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, fburst = 0;
	u32 dw1, dw2;

	/* create header */
	hdr->dw0 = cpu_to_le32((1 << CMD_HDR_RESP_REPORT_OFF) |
			       (0x2 << CMD_HDR_TLR_CTRL_OFF) |
			       (port->id << CMD_HDR_PORT_OFF) |
			       (priority << CMD_HDR_PRIORITY_OFF) |
			       (1 << CMD_HDR_MODE_OFF) | /* ini mode */
			       (1 << CMD_HDR_CMD_OFF)); /* ssp */

	dw1 = 1 << CMD_HDR_VERIFY_DTL_OFF;

	if (is_tmf) {
		dw1 |= 3 << CMD_HDR_SSP_FRAME_TYPE_OFF;
	} else {
		switch (scsi_cmnd->sc_data_direction) {
		case DMA_TO_DEVICE:
			dw1 |= 2 << CMD_HDR_SSP_FRAME_TYPE_OFF;
			has_data = 1;
			break;
		case DMA_FROM_DEVICE:
			dw1 |= 1 << CMD_HDR_SSP_FRAME_TYPE_OFF;
			has_data = 1;
			break;
		default:
			dw1 |= 0 << CMD_HDR_SSP_FRAME_TYPE_OFF;
		}
	}

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

	if (is_tmf) {
		dw2 = ((sizeof(struct ssp_tmf_iu) +
			sizeof(struct ssp_frame_hdr)+3)/4) <<
			CMD_HDR_CFL_OFF;
	} else {
		dw2 = ((sizeof(struct ssp_command_iu) +
			sizeof(struct ssp_frame_hdr)+3)/4) <<
			CMD_HDR_CFL_OFF;
	}

	dw2 |= (HISI_SAS_MAX_SSP_RESP_SZ/4) << CMD_HDR_MRFL_OFF;

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

	if (has_data) {
		rc = prep_prd_sge_v1_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);
	if (task->ssp_task.enable_first_burst) {
		fburst = (1 << 7);
		dw2 |= 1 << CMD_HDR_FIRST_BURST_OFF;
	}
	hdr->dw2 = cpu_to_le32(dw2);

	memcpy(buf_cmd, &task->ssp_task.LUN, 8);
	if (!is_tmf) {
		buf_cmd[9] = fburst | 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;
}

/* Interrupts */
static irqreturn_t int_phyup_v1_hw(int irq_no, void *p)
{
	struct hisi_sas_phy *phy = p;
	struct hisi_hba *hisi_hba = phy->hisi_hba;
	struct device *dev = &hisi_hba->pdev->dev;
	struct asd_sas_phy *sas_phy = &phy->sas_phy;
	int i, phy_no = sas_phy->id;
	u32 irq_value, context, port_id, link_rate;
	u32 *frame_rcvd = (u32 *)sas_phy->frame_rcvd;
	struct sas_identify_frame *id = (struct sas_identify_frame *)frame_rcvd;
	irqreturn_t res = IRQ_HANDLED;

	irq_value = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT2);
	if (!(irq_value & CHL_INT2_SL_PHY_ENA_MSK)) {
		dev_dbg(dev, "phyup: irq_value = %x not set enable bit\n",
			irq_value);
		res = IRQ_NONE;
		goto end;
	}

	context = hisi_sas_read32(hisi_hba, PHY_CONTEXT);
	if (context & 1 << phy_no) {
		dev_err(dev, "phyup: phy%d SATA attached equipment\n",
			phy_no);
		goto end;
	}

	port_id = (hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA) >> (4 * phy_no))
		  & 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);
	}

	/* Get the linkrate */
	link_rate = hisi_sas_read32(hisi_hba, PHY_CONN_RATE);
	link_rate = (link_rate >> (phy_no * 4)) & 0xf;
	sas_phy->linkrate = link_rate;
	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;
	queue_work(hisi_hba->wq, &phy->phyup_ws);

end:
	hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2,
			     CHL_INT2_SL_PHY_ENA_MSK);

	if (irq_value & CHL_INT2_SL_PHY_ENA_MSK) {
		u32 chl_int0 = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT0);

		chl_int0 &= ~CHL_INT0_PHYCTRL_NOTRDY_MSK;
		hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0, chl_int0);
		hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0_MSK, 0x3ce3ee);
	}

	return res;
}
static const char phy_int_names[HISI_SAS_PHY_INT_NR][32] = {
	{"Phy Up"},
};
static irq_handler_t phy_interrupts[HISI_SAS_PHY_INT_NR] = {
	int_phyup_v1_hw,
};

static int interrupt_init_v1_hw(struct hisi_hba *hisi_hba)
{
	struct device *dev = &hisi_hba->pdev->dev;
	struct device_node *np = dev->of_node;
	char *int_names = hisi_hba->int_names;
	int i, j, irq, rc, idx;

	if (!np)
		return -ENOENT;

	for (i = 0; i < hisi_hba->n_phy; i++) {
		struct hisi_sas_phy *phy = &hisi_hba->phy[i];

		idx = i * HISI_SAS_PHY_INT_NR;
		for (j = 0; j < HISI_SAS_PHY_INT_NR; j++, idx++) {
			irq = irq_of_parse_and_map(np, idx);
			if (!irq) {
				dev_err(dev,
					"irq init: fail map phy interrupt %d\n",
					idx);
				return -ENOENT;
			}

			(void)snprintf(&int_names[idx * HISI_SAS_NAME_LEN],
				       HISI_SAS_NAME_LEN,
				       "%s %s:%d", dev_name(dev),
				       phy_int_names[j], i);
			rc = devm_request_irq(dev, irq, phy_interrupts[j], 0,
					&int_names[idx * HISI_SAS_NAME_LEN],
					phy);
			if (rc) {
				dev_err(dev, "irq init: could not request "
					"phy interrupt %d, rc=%d\n",
					irq, rc);
				return -ENOENT;
			}
		}
	}
	return 0;
}

static int interrupt_openall_v1_hw(struct hisi_hba *hisi_hba)
{
	int i;
	u32 val;

	for (i = 0; i < hisi_hba->n_phy; i++) {
		/* Clear interrupt status */
		val = hisi_sas_phy_read32(hisi_hba, i, CHL_INT0);
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT0, val);
		val = hisi_sas_phy_read32(hisi_hba, i, CHL_INT1);
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT1, val);
		val = hisi_sas_phy_read32(hisi_hba, i, CHL_INT2);
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT2, val);

		/* Unmask interrupt */
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT0_MSK, 0x3ce3ee);
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT1_MSK, 0x17fff);
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT2_MSK, 0x8000012a);

		/* bypass chip bug mask abnormal intr */
		hisi_sas_phy_write32(hisi_hba, i, CHL_INT0_MSK,
				0x3fffff & ~CHL_INT0_MSK_PHYCTRL_NOTRDY_MSK);
	}

	return 0;
}

static int hisi_sas_v1_init(struct hisi_hba *hisi_hba)
{
	int rc;

	rc = hw_init_v1_hw(hisi_hba);
	if (rc)
		return rc;

	rc = interrupt_init_v1_hw(hisi_hba);
	if (rc)
		return rc;

	rc = interrupt_openall_v1_hw(hisi_hba);
	if (rc)
		return rc;

	phys_init_v1_hw(hisi_hba);

	return 0;
}

static const struct hisi_sas_hw hisi_sas_v1_hw = {
	.hw_init = hisi_sas_v1_init,
	.sl_notify = sl_notify_v1_hw,
	.prep_ssp = prep_ssp_v1_hw,
	.get_free_slot = get_free_slot_v1_hw,
	.start_delivery = start_delivery_v1_hw,
	.complete_hdr_size = sizeof(struct hisi_sas_complete_v1_hdr),
};

static int hisi_sas_v1_probe(struct platform_device *pdev)
{
	return hisi_sas_probe(pdev, &hisi_sas_v1_hw);
}

static int hisi_sas_v1_remove(struct platform_device *pdev)
{
	return hisi_sas_remove(pdev);
}

static const struct of_device_id sas_v1_of_match[] = {
	{ .compatible = "hisilicon,hip05-sas-v1",},
	{},
};
MODULE_DEVICE_TABLE(of, sas_v1_of_match);

static struct platform_driver hisi_sas_v1_driver = {
	.probe = hisi_sas_v1_probe,
	.remove = hisi_sas_v1_remove,
	.driver = {
		.name = DRV_NAME,
		.of_match_table = sas_v1_of_match,
	},
};

module_platform_driver(hisi_sas_v1_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
MODULE_DESCRIPTION("HISILICON SAS controller v1 hw driver");
MODULE_ALIAS("platform:" DRV_NAME);