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linux/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
Xiaofei Tan 1c09b66316 scsi: hisi_sas: add memory barrier in task delivery function 
In task start delivery function, we need to add a memory barrier to prevent
re-ordering of reading memory by hardware. Because the slot data is set in
task prepare function and it could be running in another CPU.

This patch adds an memory barrier after s->ready is read in the task start
delivery function, and uses WRITE_ONCE() in the places where s->ready is
set to ensure that the compiler does not re-order.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-07-19 21:57:40 -04:00

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/*
* 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 (0x3ULL << ITCT_HDR_DEV_TYPE_OFF)
#define ITCT_HDR_VALID_OFF 2
#define ITCT_HDR_VALID_MSK (0x1ULL << ITCT_HDR_VALID_OFF)
#define ITCT_HDR_AWT_CONTROL_OFF 4
#define ITCT_HDR_AWT_CONTROL_MSK (0x1ULL << ITCT_HDR_AWT_CONTROL_OFF)
#define ITCT_HDR_MAX_CONN_RATE_OFF 5
#define ITCT_HDR_MAX_CONN_RATE_MSK (0xfULL << ITCT_HDR_MAX_CONN_RATE_OFF)
#define ITCT_HDR_VALID_LINK_NUM_OFF 9
#define ITCT_HDR_VALID_LINK_NUM_MSK (0xfULL << ITCT_HDR_VALID_LINK_NUM_OFF)
#define ITCT_HDR_PORT_ID_OFF 13
#define ITCT_HDR_PORT_ID_MSK (0x7ULL << ITCT_HDR_PORT_ID_OFF)
#define ITCT_HDR_SMP_TIMEOUT_OFF 16
#define ITCT_HDR_SMP_TIMEOUT_MSK (0xffffULL << ITCT_HDR_SMP_TIMEOUT_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 (0xffffULL << \
ITCT_HDR_IT_NEXUS_LOSS_TL_OFF)
#define ITCT_HDR_BUS_INACTIVE_TL_OFF 16
#define ITCT_HDR_BUS_INACTIVE_TL_MSK (0xffffULL << \
ITCT_HDR_BUS_INACTIVE_TL_OFF)
#define ITCT_HDR_MAX_CONN_TL_OFF 32
#define ITCT_HDR_MAX_CONN_TL_MSK (0xffffULL << \
ITCT_HDR_MAX_CONN_TL_OFF)
#define ITCT_HDR_REJ_OPEN_TL_OFF 48
#define ITCT_HDR_REJ_OPEN_TL_MSK (0xffffULL << \
ITCT_HDR_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;
};
struct hisi_sas_err_record_v1 {
/* dw0 */
__le32 dma_err_type;
/* dw1 */
__le32 trans_tx_fail_type;
/* dw2 */
__le32 trans_rx_fail_type;
/* dw3 */
u32 rsvd;
};
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_COMMAND_ENTRIES_V1_HW 8192
#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,
__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_v1_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->dev;
u64 qw0, device_id = sas_dev->device_id;
struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
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;
default:
dev_warn(dev, "setup itct: unsupported dev type (%d)\n",
sas_dev->dev_type);
}
qw0 |= ((1 << ITCT_HDR_VALID_OFF) |
(1 << ITCT_HDR_AWT_CONTROL_OFF) |
(device->max_linkrate << ITCT_HDR_MAX_CONN_RATE_OFF) |
(1 << ITCT_HDR_VALID_LINK_NUM_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 */
itct->qw2 = cpu_to_le64((500ULL << ITCT_HDR_IT_NEXUS_LOSS_TL_OFF) |
(0xff00ULL << ITCT_HDR_BUS_INACTIVE_TL_OFF) |
(0xff00ULL << ITCT_HDR_MAX_CONN_TL_OFF) |
(0xff00ULL << ITCT_HDR_REJ_OPEN_TL_OFF));
}
static void clear_itct_v1_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_device *sas_dev)
{
u64 dev_id = sas_dev->device_id;
struct hisi_sas_itct *itct = &hisi_hba->itct[dev_id];
u64 qw0;
u32 reg_val = hisi_sas_read32(hisi_hba, CFG_AGING_TIME);
reg_val |= CFG_AGING_TIME_ITCT_REL_MSK;
hisi_sas_write32(hisi_hba, CFG_AGING_TIME, reg_val);
/* free itct */
udelay(1);
reg_val = hisi_sas_read32(hisi_hba, CFG_AGING_TIME);
reg_val &= ~CFG_AGING_TIME_ITCT_REL_MSK;
hisi_sas_write32(hisi_hba, CFG_AGING_TIME, reg_val);
qw0 = cpu_to_le64(itct->qw0);
qw0 &= ~ITCT_HDR_VALID_MSK;
itct->qw0 = cpu_to_le64(qw0);
}
static int reset_hw_v1_hw(struct hisi_hba *hisi_hba)
{
int i;
unsigned long end_time;
u32 val;
struct device *dev = hisi_hba->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;
}
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) {
/* 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;
}
} else {
dev_warn(dev, "no reset method\n");
return -EINVAL;
}
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->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);
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 disable_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 stop_phy_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
{
disable_phy_v1_hw(hisi_hba, phy_no);
}
static void phy_hard_reset_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
{
stop_phy_v1_hw(hisi_hba, phy_no);
msleep(100);
start_phy_v1_hw(hisi_hba, phy_no);
}
static void start_phys_v1_hw(struct timer_list *t)
{
struct hisi_hba *hisi_hba = from_timer(hisi_hba, t, timer);
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);
}
timer_setup(timer, start_phys_v1_hw, 0);
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);
}
static enum sas_linkrate phy_get_max_linkrate_v1_hw(void)
{
return SAS_LINK_RATE_6_0_GBPS;
}
static void phy_set_linkrate_v1_hw(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *r)
{
enum sas_linkrate max = r->maximum_linkrate;
u32 prog_phy_link_rate = 0x800;
prog_phy_link_rate |= hisi_sas_get_prog_phy_linkrate_mask(max);
hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE,
prog_phy_link_rate);
}
static int get_wideport_bitmap_v1_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);
for (i = 0; i < hisi_hba->n_phy; i++)
if (((phy_port_num_ma >> (i * 4)) & 0xf) == port_id)
bitmap |= 1 << i;
return bitmap;
}
/*
* 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, struct hisi_sas_dq *dq)
{
struct device *dev = hisi_hba->dev;
int queue = dq->id;
u32 r, w;
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, "could not find free slot\n");
return -EAGAIN;
}
dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
return w;
}
/* DQ lock must be taken here */
static void start_delivery_v1_hw(struct hisi_sas_dq *dq)
{
struct hisi_hba *hisi_hba = dq->hisi_hba;
struct hisi_sas_slot *s, *s1, *s2 = NULL;
struct list_head *dq_list;
int dlvry_queue = dq->id;
int wp;
dq_list = &dq->list;
list_for_each_entry_safe(s, s1, &dq->list, delivery) {
if (!s->ready)
break;
s2 = s;
list_del(&s->delivery);
}
if (!s2)
return;
/*
* Ensure that memories for slots built on other CPUs is observed.
*/
smp_rmb();
wp = (s2->dlvry_queue_slot + 1) % HISI_SAS_QUEUE_SLOTS;
hisi_sas_write32(hisi_hba, DLVRY_Q_0_WR_PTR + (dlvry_queue * 0x14), wp);
}
static void 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 hisi_sas_sge_page *sge_page = hisi_sas_sge_addr_mem(slot);
struct scatterlist *sg;
int i;
for_each_sg(scatter, sg, n_elem, i) {
struct hisi_sas_sge *entry = &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(hisi_sas_sge_addr_dma(slot));
hdr->sg_len = cpu_to_le32(n_elem << CMD_HDR_DATA_SGL_LEN_OFF);
}
static void prep_smp_v1_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 hisi_sas_port *port = slot->port;
struct scatterlist *sg_req;
struct hisi_sas_device *sas_dev = device->lldd_dev;
dma_addr_t req_dma_addr;
unsigned int req_len;
/* req */
sg_req = &task->smp_task.smp_req;
req_len = sg_dma_len(sg_req);
req_dma_addr = sg_dma_address(sg_req);
/* create header */
/* dw0 */
hdr->dw0 = cpu_to_le32((port->id << CMD_HDR_PORT_OFF) |
(1 << CMD_HDR_PRIORITY_OFF) | /* high pri */
(1 << CMD_HDR_MODE_OFF) | /* ini mode */
(2 << CMD_HDR_CMD_OFF)); /* smp */
/* map itct entry */
hdr->dw1 = cpu_to_le32(sas_dev->device_id << CMD_HDR_DEVICE_ID_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(hisi_sas_status_buf_addr_dma(slot));
}
static void prep_ssp_v1_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 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;
struct hisi_sas_tmf_task *tmf = slot->tmf;
int has_data = 0, priority = !!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 (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 (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)
prep_prd_sge_v1_hw(hisi_hba, slot, hdr, task->scatter,
slot->n_elem);
hdr->data_transfer_len = cpu_to_le32(task->total_xfer_len);
hdr->cmd_table_addr = cpu_to_le64(hisi_sas_cmd_hdr_addr_dma(slot));
hdr->sts_buffer_addr = cpu_to_le64(hisi_sas_status_buf_addr_dma(slot));
buf_cmd = hisi_sas_cmd_hdr_addr_mem(slot) +
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 (!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;
}
}
}
/* by default, task resp is complete */
static void slot_err_v1_hw(struct hisi_hba *hisi_hba,
struct sas_task *task,
struct hisi_sas_slot *slot)
{
struct task_status_struct *ts = &task->task_status;
struct hisi_sas_err_record_v1 *err_record =
hisi_sas_status_buf_addr_mem(slot);
struct device *dev = hisi_hba->dev;
switch (task->task_proto) {
case SAS_PROTOCOL_SSP:
{
int error = -1;
u32 dma_err_type = cpu_to_le32(err_record->dma_err_type);
u32 dma_tx_err_type = ((dma_err_type &
ERR_HDR_DMA_TX_ERR_TYPE_MSK)) >>
ERR_HDR_DMA_TX_ERR_TYPE_OFF;
u32 dma_rx_err_type = ((dma_err_type &
ERR_HDR_DMA_RX_ERR_TYPE_MSK)) >>
ERR_HDR_DMA_RX_ERR_TYPE_OFF;
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);
if (dma_tx_err_type) {
/* dma tx err */
error = ffs(dma_tx_err_type)
- 1 + DMA_TX_ERR_BASE;
} else if (dma_rx_err_type) {
/* dma rx err */
error = ffs(dma_rx_err_type)
- 1 + DMA_RX_ERR_BASE;
} else if (trans_tx_fail_type) {
/* trans tx err */
error = ffs(trans_tx_fail_type)
- 1 + TRANS_TX_FAIL_BASE;
} else if (trans_rx_fail_type) {
/* trans rx err */
error = ffs(trans_rx_fail_type)
- 1 + TRANS_RX_FAIL_BASE;
}
switch (error) {
case DMA_TX_DATA_UNDERFLOW_ERR:
case DMA_RX_DATA_UNDERFLOW_ERR:
{
ts->residual = 0;
ts->stat = SAS_DATA_UNDERRUN;
break;
}
case DMA_TX_DATA_SGL_OVERFLOW_ERR:
case DMA_TX_DIF_SGL_OVERFLOW_ERR:
case DMA_TX_XFER_RDY_LENGTH_OVERFLOW_ERR:
case DMA_RX_DATA_OVERFLOW_ERR:
case TRANS_RX_FRAME_OVERRUN_ERR:
case TRANS_RX_LINK_BUF_OVERRUN_ERR:
{
ts->stat = SAS_DATA_OVERRUN;
ts->residual = 0;
break;
}
case TRANS_TX_PHY_NOT_ENABLE_ERR:
{
ts->stat = SAS_PHY_DOWN;
break;
}
case TRANS_TX_OPEN_REJCT_WRONG_DEST_ERR:
case TRANS_TX_OPEN_REJCT_ZONE_VIOLATION_ERR:
case TRANS_TX_OPEN_REJCT_BY_OTHER_ERR:
case TRANS_TX_OPEN_REJCT_AIP_TIMEOUT_ERR:
case TRANS_TX_OPEN_REJCT_STP_BUSY_ERR:
case TRANS_TX_OPEN_REJCT_PROTOCOL_NOT_SUPPORT_ERR:
case TRANS_TX_OPEN_REJCT_RATE_NOT_SUPPORT_ERR:
case TRANS_TX_OPEN_REJCT_BAD_DEST_ERR:
case TRANS_TX_OPEN_BREAK_RECEIVE_ERR:
case TRANS_TX_OPEN_REJCT_PATHWAY_BLOCKED_ERR:
case TRANS_TX_OPEN_REJCT_NO_DEST_ERR:
case TRANS_TX_OPEN_RETRY_ERR:
{
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_UNKNOWN;
break;
}
case TRANS_TX_OPEN_TIMEOUT_ERR:
{
ts->stat = SAS_OPEN_TO;
break;
}
case TRANS_TX_NAK_RECEIVE_ERR:
case TRANS_TX_ACK_NAK_TIMEOUT_ERR:
{
ts->stat = SAS_NAK_R_ERR;
break;
}
case TRANS_TX_CREDIT_TIMEOUT_ERR:
case TRANS_TX_CLOSE_NORMAL_ERR:
{
/* This will request a retry */
ts->stat = SAS_QUEUE_FULL;
slot->abort = 1;
break;
}
default:
{
ts->stat = SAM_STAT_CHECK_CONDITION;
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:
{
dev_err(dev, "slot err: SATA/STP not supported");
}
break;
default:
break;
}
}
static int slot_complete_v1_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->dev;
struct task_status_struct *ts;
struct domain_device *device;
enum exec_status sts;
struct hisi_sas_complete_v1_hdr *complete_queue =
hisi_hba->complete_hdr[slot->cmplt_queue];
struct hisi_sas_complete_v1_hdr *complete_hdr;
unsigned long flags;
u32 cmplt_hdr_data;
complete_hdr = &complete_queue[slot->cmplt_queue_slot];
cmplt_hdr_data = le32_to_cpu(complete_hdr->data);
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);
task->task_state_flags &=
~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
task->task_state_flags |= SAS_TASK_STATE_DONE;
spin_unlock_irqrestore(&task->task_state_lock, flags);
memset(ts, 0, sizeof(*ts));
ts->resp = SAS_TASK_COMPLETE;
if (unlikely(!sas_dev)) {
dev_dbg(dev, "slot complete: port has no device\n");
ts->stat = SAS_PHY_DOWN;
goto out;
}
if (cmplt_hdr_data & CMPLT_HDR_IO_CFG_ERR_MSK) {
u32 info_reg = hisi_sas_read32(hisi_hba, HGC_INVLD_DQE_INFO);
if (info_reg & HGC_INVLD_DQE_INFO_DQ_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq IPTT err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_TYPE_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq type err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_FORCE_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq force phy err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_PHY_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq phy id err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_ABORT_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq abort flag err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_IPTT_OF_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq IPTT or ICT err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_SSP_ERR_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq SSP frame type err",
slot->cmplt_queue, slot->cmplt_queue_slot);
if (info_reg & HGC_INVLD_DQE_INFO_OFL_MSK)
dev_err(dev, "slot complete: [%d:%d] has dq order frame len err",
slot->cmplt_queue, slot->cmplt_queue_slot);
ts->stat = SAS_OPEN_REJECT;
ts->open_rej_reason = SAS_OREJ_UNKNOWN;
goto out;
}
if (cmplt_hdr_data & CMPLT_HDR_ERR_RCRD_XFRD_MSK &&
!(cmplt_hdr_data & CMPLT_HDR_RSPNS_XFRD_MSK)) {
slot_err_v1_hw(hisi_hba, task, slot);
if (unlikely(slot->abort))
return ts->stat;
goto out;
}
switch (task->task_proto) {
case SAS_PROTOCOL_SSP:
{
struct hisi_sas_status_buffer *status_buffer =
hisi_sas_status_buf_addr_mem(slot);
struct ssp_response_iu *iu = (struct ssp_response_iu *)
&status_buffer->iu[0];
sas_ssp_task_response(dev, task, iu);
break;
}
case SAS_PROTOCOL_SMP:
{
void *to;
struct scatterlist *sg_resp = &task->smp_task.smp_resp;
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,
hisi_sas_status_buf_addr_mem(slot) +
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:
dev_err(dev, "slot complete: SATA/STP not supported");
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:
hisi_sas_slot_task_free(hisi_hba, task, slot);
sts = ts->stat;
if (task->task_done)
task->task_done(task);
return sts;
}
/* 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->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;
unsigned long flags;
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;
hisi_sas_notify_phy_event(phy, HISI_PHYE_PHY_UP);
spin_lock_irqsave(&phy->lock, flags);
if (phy->reset_completion) {
phy->in_reset = 0;
complete(phy->reset_completion);
}
spin_unlock_irqrestore(&phy->lock, flags);
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 irqreturn_t int_bcast_v1_hw(int irq, 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 sas_ha_struct *sha = &hisi_hba->sha;
struct device *dev = hisi_hba->dev;
int phy_no = sas_phy->id;
u32 irq_value;
irqreturn_t res = IRQ_HANDLED;
irq_value = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT2);
if (!(irq_value & CHL_INT2_SL_RX_BC_ACK_MSK)) {
dev_err(dev, "bcast: irq_value = %x not set enable bit",
irq_value);
res = IRQ_NONE;
goto end;
}
if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
sha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
end:
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2,
CHL_INT2_SL_RX_BC_ACK_MSK);
return res;
}
static irqreturn_t int_abnormal_v1_hw(int irq, void *p)
{
struct hisi_sas_phy *phy = p;
struct hisi_hba *hisi_hba = phy->hisi_hba;
struct device *dev = hisi_hba->dev;
struct asd_sas_phy *sas_phy = &phy->sas_phy;
u32 irq_value, irq_mask_old;
int phy_no = sas_phy->id;
/* mask_int0 */
irq_mask_old = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT0_MSK);
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0_MSK, 0x3fffff);
/* read int0 */
irq_value = hisi_sas_phy_read32(hisi_hba, phy_no, CHL_INT0);
if (irq_value & CHL_INT0_PHYCTRL_NOTRDY_MSK) {
u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
hisi_sas_phy_down(hisi_hba, phy_no,
(phy_state & 1 << phy_no) ? 1 : 0);
}
if (irq_value & CHL_INT0_ID_TIMEOUT_MSK)
dev_dbg(dev, "abnormal: ID_TIMEOUT phy%d identify timeout\n",
phy_no);
if (irq_value & CHL_INT0_DWS_LOST_MSK)
dev_dbg(dev, "abnormal: DWS_LOST phy%d dws lost\n", phy_no);
if (irq_value & CHL_INT0_SN_FAIL_NGR_MSK)
dev_dbg(dev, "abnormal: SN_FAIL_NGR phy%d sn fail ngr\n",
phy_no);
if (irq_value & CHL_INT0_SL_IDAF_FAIL_MSK ||
irq_value & CHL_INT0_SL_OPAF_FAIL_MSK)
dev_dbg(dev, "abnormal: SL_ID/OPAF_FAIL phy%d check adr frm err\n",
phy_no);
if (irq_value & CHL_INT0_SL_PS_FAIL_OFF)
dev_dbg(dev, "abnormal: SL_PS_FAIL phy%d fail\n", phy_no);
/* write to zero */
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0, irq_value);
if (irq_value & CHL_INT0_PHYCTRL_NOTRDY_MSK)
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0_MSK,
0x3fffff & ~CHL_INT0_MSK_PHYCTRL_NOTRDY_MSK);
else
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0_MSK,
irq_mask_old);
return IRQ_HANDLED;
}
static irqreturn_t cq_interrupt_v1_hw(int irq, void *p)
{
struct hisi_sas_cq *cq = p;
struct hisi_hba *hisi_hba = cq->hisi_hba;
struct hisi_sas_slot *slot;
int queue = cq->id;
struct hisi_sas_complete_v1_hdr *complete_queue =
(struct hisi_sas_complete_v1_hdr *)
hisi_hba->complete_hdr[queue];
u32 irq_value, rd_point = cq->rd_point, wr_point;
spin_lock(&hisi_hba->lock);
irq_value = hisi_sas_read32(hisi_hba, OQ_INT_SRC);
hisi_sas_write32(hisi_hba, OQ_INT_SRC, 1 << queue);
wr_point = hisi_sas_read32(hisi_hba,
COMPL_Q_0_WR_PTR + (0x14 * queue));
while (rd_point != wr_point) {
struct hisi_sas_complete_v1_hdr *complete_hdr;
int idx;
u32 cmplt_hdr_data;
complete_hdr = &complete_queue[rd_point];
cmplt_hdr_data = cpu_to_le32(complete_hdr->data);
idx = (cmplt_hdr_data & CMPLT_HDR_IPTT_MSK) >>
CMPLT_HDR_IPTT_OFF;
slot = &hisi_hba->slot_info[idx];
/* The completion queue and queue slot index are not
* necessarily the same as the delivery queue and
* queue slot index.
*/
slot->cmplt_queue_slot = rd_point;
slot->cmplt_queue = queue;
slot_complete_v1_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);
return IRQ_HANDLED;
}
static irqreturn_t fatal_ecc_int_v1_hw(int irq, void *p)
{
struct hisi_hba *hisi_hba = p;
struct device *dev = hisi_hba->dev;
u32 ecc_int = hisi_sas_read32(hisi_hba, SAS_ECC_INTR);
if (ecc_int & SAS_ECC_INTR_DQ_ECC1B_MSK) {
u32 ecc_err = hisi_sas_read32(hisi_hba, HGC_ECC_ERR);
panic("%s: Fatal DQ 1b ECC interrupt (0x%x)\n",
dev_name(dev), ecc_err);
}
if (ecc_int & SAS_ECC_INTR_DQ_ECCBAD_MSK) {
u32 addr = (hisi_sas_read32(hisi_hba, HGC_DQ_ECC_ADDR) &
HGC_DQ_ECC_ADDR_BAD_MSK) >>
HGC_DQ_ECC_ADDR_BAD_OFF;
panic("%s: Fatal DQ RAM ECC interrupt @ 0x%08x\n",
dev_name(dev), addr);
}
if (ecc_int & SAS_ECC_INTR_IOST_ECC1B_MSK) {
u32 ecc_err = hisi_sas_read32(hisi_hba, HGC_ECC_ERR);
panic("%s: Fatal IOST 1b ECC interrupt (0x%x)\n",
dev_name(dev), ecc_err);
}
if (ecc_int & SAS_ECC_INTR_IOST_ECCBAD_MSK) {
u32 addr = (hisi_sas_read32(hisi_hba, HGC_IOST_ECC_ADDR) &
HGC_IOST_ECC_ADDR_BAD_MSK) >>
HGC_IOST_ECC_ADDR_BAD_OFF;
panic("%s: Fatal IOST RAM ECC interrupt @ 0x%08x\n",
dev_name(dev), addr);
}
if (ecc_int & SAS_ECC_INTR_ITCT_ECCBAD_MSK) {
u32 addr = (hisi_sas_read32(hisi_hba, HGC_ITCT_ECC_ADDR) &
HGC_ITCT_ECC_ADDR_BAD_MSK) >>
HGC_ITCT_ECC_ADDR_BAD_OFF;
panic("%s: Fatal TCT RAM ECC interrupt @ 0x%08x\n",
dev_name(dev), addr);
}
if (ecc_int & SAS_ECC_INTR_ITCT_ECC1B_MSK) {
u32 ecc_err = hisi_sas_read32(hisi_hba, HGC_ECC_ERR);
panic("%s: Fatal ITCT 1b ECC interrupt (0x%x)\n",
dev_name(dev), ecc_err);
}
hisi_sas_write32(hisi_hba, SAS_ECC_INTR, ecc_int | 0x3f);
return IRQ_HANDLED;
}
static irqreturn_t fatal_axi_int_v1_hw(int irq, void *p)
{
struct hisi_hba *hisi_hba = p;
struct device *dev = hisi_hba->dev;
u32 axi_int = hisi_sas_read32(hisi_hba, ENT_INT_SRC2);
u32 axi_info = hisi_sas_read32(hisi_hba, HGC_AXI_FIFO_ERR_INFO);
if (axi_int & ENT_INT_SRC2_DQ_CFG_ERR_MSK)
panic("%s: Fatal DQ_CFG_ERR interrupt (0x%x)\n",
dev_name(dev), axi_info);
if (axi_int & ENT_INT_SRC2_CQ_CFG_ERR_MSK)
panic("%s: Fatal CQ_CFG_ERR interrupt (0x%x)\n",
dev_name(dev), axi_info);
if (axi_int & ENT_INT_SRC2_AXI_WRONG_INT_MSK)
panic("%s: Fatal AXI_WRONG_INT interrupt (0x%x)\n",
dev_name(dev), axi_info);
if (axi_int & ENT_INT_SRC2_AXI_OVERLF_INT_MSK)
panic("%s: Fatal AXI_OVERLF_INT incorrect interrupt (0x%x)\n",
dev_name(dev), axi_info);
hisi_sas_write32(hisi_hba, ENT_INT_SRC2, axi_int | 0x30000000);
return IRQ_HANDLED;
}
static irq_handler_t phy_interrupts[HISI_SAS_PHY_INT_NR] = {
int_bcast_v1_hw,
int_phyup_v1_hw,
int_abnormal_v1_hw
};
static irq_handler_t fatal_interrupts[HISI_SAS_MAX_QUEUES] = {
fatal_ecc_int_v1_hw,
fatal_axi_int_v1_hw
};
static int interrupt_init_v1_hw(struct hisi_hba *hisi_hba)
{
struct platform_device *pdev = hisi_hba->platform_dev;
struct device *dev = &pdev->dev;
int i, j, irq, rc, idx;
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 = platform_get_irq(pdev, idx);
if (!irq) {
dev_err(dev,
"irq init: fail map phy interrupt %d\n",
idx);
return -ENOENT;
}
rc = devm_request_irq(dev, irq, phy_interrupts[j], 0,
DRV_NAME " phy", phy);
if (rc) {
dev_err(dev, "irq init: could not request "
"phy interrupt %d, rc=%d\n",
irq, rc);
return -ENOENT;
}
}
}
idx = hisi_hba->n_phy * HISI_SAS_PHY_INT_NR;
for (i = 0; i < hisi_hba->queue_count; i++, idx++) {
irq = platform_get_irq(pdev, 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_v1_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;
}
}
idx = (hisi_hba->n_phy * HISI_SAS_PHY_INT_NR) + hisi_hba->queue_count;
for (i = 0; i < HISI_SAS_FATAL_INT_NR; i++, idx++) {
irq = platform_get_irq(pdev, idx);
if (!irq) {
dev_err(dev, "irq init: could not 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;
}
}
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;
return 0;
}
static struct scsi_host_template sht_v1_hw = {
.name = DRV_NAME,
.module = THIS_MODULE,
.queuecommand = sas_queuecommand,
.target_alloc = sas_target_alloc,
.slave_configure = hisi_sas_slave_configure,
.scan_finished = hisi_sas_scan_finished,
.scan_start = hisi_sas_scan_start,
.change_queue_depth = sas_change_queue_depth,
.bios_param = sas_bios_param,
.can_queue = 1,
.this_id = -1,
.sg_tablesize = SG_ALL,
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.use_clustering = ENABLE_CLUSTERING,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_target_reset_handler = sas_eh_target_reset_handler,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = host_attrs,
};
static const struct hisi_sas_hw hisi_sas_v1_hw = {
.hw_init = hisi_sas_v1_init,
.setup_itct = setup_itct_v1_hw,
.sl_notify = sl_notify_v1_hw,
.clear_itct = clear_itct_v1_hw,
.prep_smp = prep_smp_v1_hw,
.prep_ssp = prep_ssp_v1_hw,
.get_free_slot = get_free_slot_v1_hw,
.start_delivery = start_delivery_v1_hw,
.slot_complete = slot_complete_v1_hw,
.phys_init = phys_init_v1_hw,
.phy_start = start_phy_v1_hw,
.phy_disable = disable_phy_v1_hw,
.phy_hard_reset = phy_hard_reset_v1_hw,
.phy_set_linkrate = phy_set_linkrate_v1_hw,
.phy_get_max_linkrate = phy_get_max_linkrate_v1_hw,
.get_wideport_bitmap = get_wideport_bitmap_v1_hw,
.max_command_entries = HISI_SAS_COMMAND_ENTRIES_V1_HW,
.complete_hdr_size = sizeof(struct hisi_sas_complete_v1_hdr),
.sht = &sht_v1_hw,
};
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 const struct acpi_device_id sas_v1_acpi_match[] = {
{ "HISI0161", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, sas_v1_acpi_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,
.acpi_match_table = ACPI_PTR(sas_v1_acpi_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);
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