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linux_dsm_epyc7002/drivers/scsi/ufs/ufshci.h
Venkat Gopalakrishnan 9333d77573 scsi: ufs: Fix irq return code 
Return IRQ_HANDLED only if the irq is really handled, this will help in
catching spurious interrupts that go unhandled.

Link: https://lore.kernel.org/r/1573798172-20534-6-git-send-email-cang@codeaurora.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-11-19 21:37:09 -05:00

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/*
* Universal Flash Storage Host controller driver
*
* This code is based on drivers/scsi/ufs/ufshci.h
* Copyright (C) 2011-2013 Samsung India Software Operations
*
* Authors:
* Santosh Yaraganavi <santosh.sy@samsung.com>
* Vinayak Holikatti <h.vinayak@samsung.com>
*
* 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.
* See the COPYING file in the top-level directory or visit
* <http://www.gnu.org/licenses/gpl-2.0.html>
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* This program is provided "AS IS" and "WITH ALL FAULTS" and
* without warranty of any kind. You are solely responsible for
* determining the appropriateness of using and distributing
* the program and assume all risks associated with your exercise
* of rights with respect to the program, including but not limited
* to infringement of third party rights, the risks and costs of
* program errors, damage to or loss of data, programs or equipment,
* and unavailability or interruption of operations. Under no
* circumstances will the contributor of this Program be liable for
* any damages of any kind arising from your use or distribution of
* this program.
*/
#ifndef _UFSHCI_H
#define _UFSHCI_H
enum {
TASK_REQ_UPIU_SIZE_DWORDS = 8,
TASK_RSP_UPIU_SIZE_DWORDS = 8,
ALIGNED_UPIU_SIZE = 512,
};
/* UFSHCI Registers */
enum {
REG_CONTROLLER_CAPABILITIES = 0x00,
REG_UFS_VERSION = 0x08,
REG_CONTROLLER_DEV_ID = 0x10,
REG_CONTROLLER_PROD_ID = 0x14,
REG_AUTO_HIBERNATE_IDLE_TIMER = 0x18,
REG_INTERRUPT_STATUS = 0x20,
REG_INTERRUPT_ENABLE = 0x24,
REG_CONTROLLER_STATUS = 0x30,
REG_CONTROLLER_ENABLE = 0x34,
REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER = 0x38,
REG_UIC_ERROR_CODE_DATA_LINK_LAYER = 0x3C,
REG_UIC_ERROR_CODE_NETWORK_LAYER = 0x40,
REG_UIC_ERROR_CODE_TRANSPORT_LAYER = 0x44,
REG_UIC_ERROR_CODE_DME = 0x48,
REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL = 0x4C,
REG_UTP_TRANSFER_REQ_LIST_BASE_L = 0x50,
REG_UTP_TRANSFER_REQ_LIST_BASE_H = 0x54,
REG_UTP_TRANSFER_REQ_DOOR_BELL = 0x58,
REG_UTP_TRANSFER_REQ_LIST_CLEAR = 0x5C,
REG_UTP_TRANSFER_REQ_LIST_RUN_STOP = 0x60,
REG_UTP_TASK_REQ_LIST_BASE_L = 0x70,
REG_UTP_TASK_REQ_LIST_BASE_H = 0x74,
REG_UTP_TASK_REQ_DOOR_BELL = 0x78,
REG_UTP_TASK_REQ_LIST_CLEAR = 0x7C,
REG_UTP_TASK_REQ_LIST_RUN_STOP = 0x80,
REG_UIC_COMMAND = 0x90,
REG_UIC_COMMAND_ARG_1 = 0x94,
REG_UIC_COMMAND_ARG_2 = 0x98,
REG_UIC_COMMAND_ARG_3 = 0x9C,
UFSHCI_REG_SPACE_SIZE = 0xA0,
REG_UFS_CCAP = 0x100,
REG_UFS_CRYPTOCAP = 0x104,
UFSHCI_CRYPTO_REG_SPACE_SIZE = 0x400,
};
/* Controller capability masks */
enum {
MASK_TRANSFER_REQUESTS_SLOTS = 0x0000001F,
MASK_TASK_MANAGEMENT_REQUEST_SLOTS = 0x00070000,
MASK_AUTO_HIBERN8_SUPPORT = 0x00800000,
MASK_64_ADDRESSING_SUPPORT = 0x01000000,
MASK_OUT_OF_ORDER_DATA_DELIVERY_SUPPORT = 0x02000000,
MASK_UIC_DME_TEST_MODE_SUPPORT = 0x04000000,
};
#define UFS_MASK(mask, offset) ((mask) << (offset))
/* UFS Version 08h */
#define MINOR_VERSION_NUM_MASK UFS_MASK(0xFFFF, 0)
#define MAJOR_VERSION_NUM_MASK UFS_MASK(0xFFFF, 16)
/* Controller UFSHCI version */
enum {
UFSHCI_VERSION_10 = 0x00010000, /* 1.0 */
UFSHCI_VERSION_11 = 0x00010100, /* 1.1 */
UFSHCI_VERSION_20 = 0x00000200, /* 2.0 */
UFSHCI_VERSION_21 = 0x00000210, /* 2.1 */
};
/*
* HCDDID - Host Controller Identification Descriptor
* - Device ID and Device Class 10h
*/
#define DEVICE_CLASS UFS_MASK(0xFFFF, 0)
#define DEVICE_ID UFS_MASK(0xFF, 24)
/*
* HCPMID - Host Controller Identification Descriptor
* - Product/Manufacturer ID 14h
*/
#define MANUFACTURE_ID_MASK UFS_MASK(0xFFFF, 0)
#define PRODUCT_ID_MASK UFS_MASK(0xFFFF, 16)
/* AHIT - Auto-Hibernate Idle Timer */
#define UFSHCI_AHIBERN8_TIMER_MASK GENMASK(9, 0)
#define UFSHCI_AHIBERN8_SCALE_MASK GENMASK(12, 10)
#define UFSHCI_AHIBERN8_SCALE_FACTOR 10
#define UFSHCI_AHIBERN8_MAX (1023 * 100000)
/*
* IS - Interrupt Status - 20h
*/
#define UTP_TRANSFER_REQ_COMPL 0x1
#define UIC_DME_END_PT_RESET 0x2
#define UIC_ERROR 0x4
#define UIC_TEST_MODE 0x8
#define UIC_POWER_MODE 0x10
#define UIC_HIBERNATE_EXIT 0x20
#define UIC_HIBERNATE_ENTER 0x40
#define UIC_LINK_LOST 0x80
#define UIC_LINK_STARTUP 0x100
#define UTP_TASK_REQ_COMPL 0x200
#define UIC_COMMAND_COMPL 0x400
#define DEVICE_FATAL_ERROR 0x800
#define CONTROLLER_FATAL_ERROR 0x10000
#define SYSTEM_BUS_FATAL_ERROR 0x20000
#define UFSHCD_UIC_HIBERN8_MASK (UIC_HIBERNATE_ENTER |\
UIC_HIBERNATE_EXIT)
#define UFSHCD_UIC_PWR_MASK (UFSHCD_UIC_HIBERN8_MASK |\
UIC_POWER_MODE)
#define UFSHCD_UIC_MASK (UIC_COMMAND_COMPL | UFSHCD_UIC_PWR_MASK)
#define UFSHCD_ERROR_MASK (UIC_ERROR |\
DEVICE_FATAL_ERROR |\
CONTROLLER_FATAL_ERROR |\
SYSTEM_BUS_FATAL_ERROR)
#define INT_FATAL_ERRORS (DEVICE_FATAL_ERROR |\
CONTROLLER_FATAL_ERROR |\
SYSTEM_BUS_FATAL_ERROR)
/* HCS - Host Controller Status 30h */
#define DEVICE_PRESENT 0x1
#define UTP_TRANSFER_REQ_LIST_READY 0x2
#define UTP_TASK_REQ_LIST_READY 0x4
#define UIC_COMMAND_READY 0x8
#define HOST_ERROR_INDICATOR 0x10
#define DEVICE_ERROR_INDICATOR 0x20
#define UIC_POWER_MODE_CHANGE_REQ_STATUS_MASK UFS_MASK(0x7, 8)
#define UFSHCD_STATUS_READY (UTP_TRANSFER_REQ_LIST_READY |\
UTP_TASK_REQ_LIST_READY |\
UIC_COMMAND_READY)
enum {
PWR_OK = 0x0,
PWR_LOCAL = 0x01,
PWR_REMOTE = 0x02,
PWR_BUSY = 0x03,
PWR_ERROR_CAP = 0x04,
PWR_FATAL_ERROR = 0x05,
};
/* HCE - Host Controller Enable 34h */
#define CONTROLLER_ENABLE 0x1
#define CONTROLLER_DISABLE 0x0
#define CRYPTO_GENERAL_ENABLE 0x2
/* UECPA - Host UIC Error Code PHY Adapter Layer 38h */
#define UIC_PHY_ADAPTER_LAYER_ERROR 0x80000000
#define UIC_PHY_ADAPTER_LAYER_ERROR_CODE_MASK 0x1F
#define UIC_PHY_ADAPTER_LAYER_LANE_ERR_MASK 0xF
/* UECDL - Host UIC Error Code Data Link Layer 3Ch */
#define UIC_DATA_LINK_LAYER_ERROR 0x80000000
#define UIC_DATA_LINK_LAYER_ERROR_CODE_MASK 0xFFFF
#define UIC_DATA_LINK_LAYER_ERROR_TCX_REP_TIMER_EXP 0x2
#define UIC_DATA_LINK_LAYER_ERROR_AFCX_REQ_TIMER_EXP 0x4
#define UIC_DATA_LINK_LAYER_ERROR_FCX_PRO_TIMER_EXP 0x8
#define UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OF 0x20
#define UIC_DATA_LINK_LAYER_ERROR_PA_INIT 0x2000
#define UIC_DATA_LINK_LAYER_ERROR_NAC_RECEIVED 0x0001
#define UIC_DATA_LINK_LAYER_ERROR_TCx_REPLAY_TIMEOUT 0x0002
/* UECN - Host UIC Error Code Network Layer 40h */
#define UIC_NETWORK_LAYER_ERROR 0x80000000
#define UIC_NETWORK_LAYER_ERROR_CODE_MASK 0x7
#define UIC_NETWORK_UNSUPPORTED_HEADER_TYPE 0x1
#define UIC_NETWORK_BAD_DEVICEID_ENC 0x2
#define UIC_NETWORK_LHDR_TRAP_PACKET_DROPPING 0x4
/* UECT - Host UIC Error Code Transport Layer 44h */
#define UIC_TRANSPORT_LAYER_ERROR 0x80000000
#define UIC_TRANSPORT_LAYER_ERROR_CODE_MASK 0x7F
#define UIC_TRANSPORT_UNSUPPORTED_HEADER_TYPE 0x1
#define UIC_TRANSPORT_UNKNOWN_CPORTID 0x2
#define UIC_TRANSPORT_NO_CONNECTION_RX 0x4
#define UIC_TRANSPORT_CONTROLLED_SEGMENT_DROPPING 0x8
#define UIC_TRANSPORT_BAD_TC 0x10
#define UIC_TRANSPORT_E2E_CREDIT_OVERFOW 0x20
#define UIC_TRANSPORT_SAFETY_VALUE_DROPPING 0x40
/* UECDME - Host UIC Error Code DME 48h */
#define UIC_DME_ERROR 0x80000000
#define UIC_DME_ERROR_CODE_MASK 0x1
/* UTRIACR - Interrupt Aggregation control register - 0x4Ch */
#define INT_AGGR_TIMEOUT_VAL_MASK 0xFF
#define INT_AGGR_COUNTER_THRESHOLD_MASK UFS_MASK(0x1F, 8)
#define INT_AGGR_COUNTER_AND_TIMER_RESET 0x10000
#define INT_AGGR_STATUS_BIT 0x100000
#define INT_AGGR_PARAM_WRITE 0x1000000
#define INT_AGGR_ENABLE 0x80000000
/* UTRLRSR - UTP Transfer Request Run-Stop Register 60h */
#define UTP_TRANSFER_REQ_LIST_RUN_STOP_BIT 0x1
/* UTMRLRSR - UTP Task Management Request Run-Stop Register 80h */
#define UTP_TASK_REQ_LIST_RUN_STOP_BIT 0x1
/* UICCMD - UIC Command */
#define COMMAND_OPCODE_MASK 0xFF
#define GEN_SELECTOR_INDEX_MASK 0xFFFF
#define MIB_ATTRIBUTE_MASK UFS_MASK(0xFFFF, 16)
#define RESET_LEVEL 0xFF
#define ATTR_SET_TYPE_MASK UFS_MASK(0xFF, 16)
#define CONFIG_RESULT_CODE_MASK 0xFF
#define GENERIC_ERROR_CODE_MASK 0xFF
/* GenSelectorIndex calculation macros for M-PHY attributes */
#define UIC_ARG_MPHY_TX_GEN_SEL_INDEX(lane) (lane)
#define UIC_ARG_MPHY_RX_GEN_SEL_INDEX(lane) (PA_MAXDATALANES + (lane))
#define UIC_ARG_MIB_SEL(attr, sel) ((((attr) & 0xFFFF) << 16) |\
((sel) & 0xFFFF))
#define UIC_ARG_MIB(attr) UIC_ARG_MIB_SEL(attr, 0)
#define UIC_ARG_ATTR_TYPE(t) (((t) & 0xFF) << 16)
#define UIC_GET_ATTR_ID(v) (((v) >> 16) & 0xFFFF)
/* Link Status*/
enum link_status {
UFSHCD_LINK_IS_DOWN = 1,
UFSHCD_LINK_IS_UP = 2,
};
/* UIC Commands */
enum uic_cmd_dme {
UIC_CMD_DME_GET = 0x01,
UIC_CMD_DME_SET = 0x02,
UIC_CMD_DME_PEER_GET = 0x03,
UIC_CMD_DME_PEER_SET = 0x04,
UIC_CMD_DME_POWERON = 0x10,
UIC_CMD_DME_POWEROFF = 0x11,
UIC_CMD_DME_ENABLE = 0x12,
UIC_CMD_DME_RESET = 0x14,
UIC_CMD_DME_END_PT_RST = 0x15,
UIC_CMD_DME_LINK_STARTUP = 0x16,
UIC_CMD_DME_HIBER_ENTER = 0x17,
UIC_CMD_DME_HIBER_EXIT = 0x18,
UIC_CMD_DME_TEST_MODE = 0x1A,
};
/* UIC Config result code / Generic error code */
enum {
UIC_CMD_RESULT_SUCCESS = 0x00,
UIC_CMD_RESULT_INVALID_ATTR = 0x01,
UIC_CMD_RESULT_FAILURE = 0x01,
UIC_CMD_RESULT_INVALID_ATTR_VALUE = 0x02,
UIC_CMD_RESULT_READ_ONLY_ATTR = 0x03,
UIC_CMD_RESULT_WRITE_ONLY_ATTR = 0x04,
UIC_CMD_RESULT_BAD_INDEX = 0x05,
UIC_CMD_RESULT_LOCKED_ATTR = 0x06,
UIC_CMD_RESULT_BAD_TEST_FEATURE_INDEX = 0x07,
UIC_CMD_RESULT_PEER_COMM_FAILURE = 0x08,
UIC_CMD_RESULT_BUSY = 0x09,
UIC_CMD_RESULT_DME_FAILURE = 0x0A,
};
#define MASK_UIC_COMMAND_RESULT 0xFF
#define INT_AGGR_COUNTER_THLD_VAL(c) (((c) & 0x1F) << 8)
#define INT_AGGR_TIMEOUT_VAL(t) (((t) & 0xFF) << 0)
/* Interrupt disable masks */
enum {
/* Interrupt disable mask for UFSHCI v1.0 */
INTERRUPT_MASK_ALL_VER_10 = 0x30FFF,
INTERRUPT_MASK_RW_VER_10 = 0x30000,
/* Interrupt disable mask for UFSHCI v1.1 */
INTERRUPT_MASK_ALL_VER_11 = 0x31FFF,
/* Interrupt disable mask for UFSHCI v2.1 */
INTERRUPT_MASK_ALL_VER_21 = 0x71FFF,
};
/*
* Request Descriptor Definitions
*/
/* Transfer request command type */
enum {
UTP_CMD_TYPE_SCSI = 0x0,
UTP_CMD_TYPE_UFS = 0x1,
UTP_CMD_TYPE_DEV_MANAGE = 0x2,
};
/* To accommodate UFS2.0 required Command type */
enum {
UTP_CMD_TYPE_UFS_STORAGE = 0x1,
};
enum {
UTP_SCSI_COMMAND = 0x00000000,
UTP_NATIVE_UFS_COMMAND = 0x10000000,
UTP_DEVICE_MANAGEMENT_FUNCTION = 0x20000000,
UTP_REQ_DESC_INT_CMD = 0x01000000,
};
/* UTP Transfer Request Data Direction (DD) */
enum {
UTP_NO_DATA_TRANSFER = 0x00000000,
UTP_HOST_TO_DEVICE = 0x02000000,
UTP_DEVICE_TO_HOST = 0x04000000,
};
/* Overall command status values */
enum {
OCS_SUCCESS = 0x0,
OCS_INVALID_CMD_TABLE_ATTR = 0x1,
OCS_INVALID_PRDT_ATTR = 0x2,
OCS_MISMATCH_DATA_BUF_SIZE = 0x3,
OCS_MISMATCH_RESP_UPIU_SIZE = 0x4,
OCS_PEER_COMM_FAILURE = 0x5,
OCS_ABORTED = 0x6,
OCS_FATAL_ERROR = 0x7,
OCS_INVALID_COMMAND_STATUS = 0x0F,
MASK_OCS = 0x0F,
};
/* The maximum length of the data byte count field in the PRDT is 256KB */
#define PRDT_DATA_BYTE_COUNT_MAX (256 * 1024)
/* The granularity of the data byte count field in the PRDT is 32-bit */
#define PRDT_DATA_BYTE_COUNT_PAD 4
/**
* struct ufshcd_sg_entry - UFSHCI PRD Entry
* @base_addr: Lower 32bit physical address DW-0
* @upper_addr: Upper 32bit physical address DW-1
* @reserved: Reserved for future use DW-2
* @size: size of physical segment DW-3
*/
struct ufshcd_sg_entry {
__le32 base_addr;
__le32 upper_addr;
__le32 reserved;
__le32 size;
};
/**
* struct utp_transfer_cmd_desc - UFS Command Descriptor structure
* @command_upiu: Command UPIU Frame address
* @response_upiu: Response UPIU Frame address
* @prd_table: Physical Region Descriptor
*/
struct utp_transfer_cmd_desc {
u8 command_upiu[ALIGNED_UPIU_SIZE];
u8 response_upiu[ALIGNED_UPIU_SIZE];
struct ufshcd_sg_entry prd_table[SG_ALL];
};
/**
* struct request_desc_header - Descriptor Header common to both UTRD and UTMRD
* @dword0: Descriptor Header DW0
* @dword1: Descriptor Header DW1
* @dword2: Descriptor Header DW2
* @dword3: Descriptor Header DW3
*/
struct request_desc_header {
__le32 dword_0;
__le32 dword_1;
__le32 dword_2;
__le32 dword_3;
};
/**
* struct utp_transfer_req_desc - UTRD structure
* @header: UTRD header DW-0 to DW-3
* @command_desc_base_addr_lo: UCD base address low DW-4
* @command_desc_base_addr_hi: UCD base address high DW-5
* @response_upiu_length: response UPIU length DW-6
* @response_upiu_offset: response UPIU offset DW-6
* @prd_table_length: Physical region descriptor length DW-7
* @prd_table_offset: Physical region descriptor offset DW-7
*/
struct utp_transfer_req_desc {
/* DW 0-3 */
struct request_desc_header header;
/* DW 4-5*/
__le32 command_desc_base_addr_lo;
__le32 command_desc_base_addr_hi;
/* DW 6 */
__le16 response_upiu_length;
__le16 response_upiu_offset;
/* DW 7 */
__le16 prd_table_length;
__le16 prd_table_offset;
};
/*
* UTMRD structure.
*/
struct utp_task_req_desc {
/* DW 0-3 */
struct request_desc_header header;
/* DW 4-11 - Task request UPIU structure */
struct utp_upiu_header req_header;
__be32 input_param1;
__be32 input_param2;
__be32 input_param3;
__be32 __reserved1[2];
/* DW 12-19 - Task Management Response UPIU structure */
struct utp_upiu_header rsp_header;
__be32 output_param1;
__be32 output_param2;
__be32 __reserved2[3];
};
#endif /* End of Header */
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