diff options
Diffstat (limited to 'drivers/block/skd_s1120.h')
| -rw-r--r-- | drivers/block/skd_s1120.h | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/drivers/block/skd_s1120.h b/drivers/block/skd_s1120.h new file mode 100644 index 000000000..de35f47e9 --- /dev/null +++ b/drivers/block/skd_s1120.h @@ -0,0 +1,324 @@ +/* + * Copyright 2012 STEC, Inc. + * Copyright (c) 2017 Western Digital Corporation or its affiliates. + * + * This file is part of the Linux kernel, and is made available under + * the terms of the GNU General Public License version 2. + */ + + +#ifndef SKD_S1120_H +#define SKD_S1120_H + +/* + * Q-channel, 64-bit r/w + */ +#define FIT_Q_COMMAND 0x400u +#define FIT_QCMD_QID_MASK (0x3 << 1) +#define FIT_QCMD_QID0 (0x0 << 1) +#define FIT_QCMD_QID_NORMAL FIT_QCMD_QID0 +#define FIT_QCMD_QID1 (0x1 << 1) +#define FIT_QCMD_QID2 (0x2 << 1) +#define FIT_QCMD_QID3 (0x3 << 1) +#define FIT_QCMD_FLUSH_QUEUE (0ull) /* add QID */ +#define FIT_QCMD_MSGSIZE_MASK (0x3 << 4) +#define FIT_QCMD_MSGSIZE_64 (0x0 << 4) +#define FIT_QCMD_MSGSIZE_128 (0x1 << 4) +#define FIT_QCMD_MSGSIZE_256 (0x2 << 4) +#define FIT_QCMD_MSGSIZE_512 (0x3 << 4) +#define FIT_QCMD_ALIGN L1_CACHE_BYTES + +/* + * Control, 32-bit r/w + */ +#define FIT_CONTROL 0x500u +#define FIT_CR_HARD_RESET (1u << 0u) +#define FIT_CR_SOFT_RESET (1u << 1u) +#define FIT_CR_DIS_TIMESTAMPS (1u << 6u) +#define FIT_CR_ENABLE_INTERRUPTS (1u << 7u) + +/* + * Status, 32-bit, r/o + */ +#define FIT_STATUS 0x510u +#define FIT_SR_DRIVE_STATE_MASK 0x000000FFu +#define FIT_SR_SIGNATURE (0xFF << 8) +#define FIT_SR_PIO_DMA (1 << 16) +#define FIT_SR_DRIVE_OFFLINE 0x00 +#define FIT_SR_DRIVE_INIT 0x01 +/* #define FIT_SR_DRIVE_READY 0x02 */ +#define FIT_SR_DRIVE_ONLINE 0x03 +#define FIT_SR_DRIVE_BUSY 0x04 +#define FIT_SR_DRIVE_FAULT 0x05 +#define FIT_SR_DRIVE_DEGRADED 0x06 +#define FIT_SR_PCIE_LINK_DOWN 0x07 +#define FIT_SR_DRIVE_SOFT_RESET 0x08 +#define FIT_SR_DRIVE_INIT_FAULT 0x09 +#define FIT_SR_DRIVE_BUSY_SANITIZE 0x0A +#define FIT_SR_DRIVE_BUSY_ERASE 0x0B +#define FIT_SR_DRIVE_FW_BOOTING 0x0C +#define FIT_SR_DRIVE_NEED_FW_DOWNLOAD 0xFE +#define FIT_SR_DEVICE_MISSING 0xFF +#define FIT_SR__RESERVED 0xFFFFFF00u + +/* + * FIT_STATUS - Status register data definition + */ +#define FIT_SR_STATE_MASK (0xFF << 0) +#define FIT_SR_SIGNATURE (0xFF << 8) +#define FIT_SR_PIO_DMA (1 << 16) + +/* + * Interrupt status, 32-bit r/w1c (w1c ==> write 1 to clear) + */ +#define FIT_INT_STATUS_HOST 0x520u +#define FIT_ISH_FW_STATE_CHANGE (1u << 0u) +#define FIT_ISH_COMPLETION_POSTED (1u << 1u) +#define FIT_ISH_MSG_FROM_DEV (1u << 2u) +#define FIT_ISH_UNDEFINED_3 (1u << 3u) +#define FIT_ISH_UNDEFINED_4 (1u << 4u) +#define FIT_ISH_Q0_FULL (1u << 5u) +#define FIT_ISH_Q1_FULL (1u << 6u) +#define FIT_ISH_Q2_FULL (1u << 7u) +#define FIT_ISH_Q3_FULL (1u << 8u) +#define FIT_ISH_QCMD_FIFO_OVERRUN (1u << 9u) +#define FIT_ISH_BAD_EXP_ROM_READ (1u << 10u) + +#define FIT_INT_DEF_MASK \ + (FIT_ISH_FW_STATE_CHANGE | \ + FIT_ISH_COMPLETION_POSTED | \ + FIT_ISH_MSG_FROM_DEV | \ + FIT_ISH_Q0_FULL | \ + FIT_ISH_Q1_FULL | \ + FIT_ISH_Q2_FULL | \ + FIT_ISH_Q3_FULL | \ + FIT_ISH_QCMD_FIFO_OVERRUN | \ + FIT_ISH_BAD_EXP_ROM_READ) + +#define FIT_INT_QUEUE_FULL \ + (FIT_ISH_Q0_FULL | \ + FIT_ISH_Q1_FULL | \ + FIT_ISH_Q2_FULL | \ + FIT_ISH_Q3_FULL) + +#define MSI_MSG_NWL_ERROR_0 0x00000000 +#define MSI_MSG_NWL_ERROR_1 0x00000001 +#define MSI_MSG_NWL_ERROR_2 0x00000002 +#define MSI_MSG_NWL_ERROR_3 0x00000003 +#define MSI_MSG_STATE_CHANGE 0x00000004 +#define MSI_MSG_COMPLETION_POSTED 0x00000005 +#define MSI_MSG_MSG_FROM_DEV 0x00000006 +#define MSI_MSG_RESERVED_0 0x00000007 +#define MSI_MSG_RESERVED_1 0x00000008 +#define MSI_MSG_QUEUE_0_FULL 0x00000009 +#define MSI_MSG_QUEUE_1_FULL 0x0000000A +#define MSI_MSG_QUEUE_2_FULL 0x0000000B +#define MSI_MSG_QUEUE_3_FULL 0x0000000C + +#define FIT_INT_RESERVED_MASK \ + (FIT_ISH_UNDEFINED_3 | \ + FIT_ISH_UNDEFINED_4) + +/* + * Interrupt mask, 32-bit r/w + * Bit definitions are the same as FIT_INT_STATUS_HOST + */ +#define FIT_INT_MASK_HOST 0x528u + +/* + * Message to device, 32-bit r/w + */ +#define FIT_MSG_TO_DEVICE 0x540u + +/* + * Message from device, 32-bit, r/o + */ +#define FIT_MSG_FROM_DEVICE 0x548u + +/* + * 32-bit messages to/from device, composition/extraction macros + */ +#define FIT_MXD_CONS(TYPE, PARAM, DATA) \ + ((((TYPE) & 0xFFu) << 24u) | \ + (((PARAM) & 0xFFu) << 16u) | \ + (((DATA) & 0xFFFFu) << 0u)) +#define FIT_MXD_TYPE(MXD) (((MXD) >> 24u) & 0xFFu) +#define FIT_MXD_PARAM(MXD) (((MXD) >> 16u) & 0xFFu) +#define FIT_MXD_DATA(MXD) (((MXD) >> 0u) & 0xFFFFu) + +/* + * Types of messages to/from device + */ +#define FIT_MTD_FITFW_INIT 0x01u +#define FIT_MTD_GET_CMDQ_DEPTH 0x02u +#define FIT_MTD_SET_COMPQ_DEPTH 0x03u +#define FIT_MTD_SET_COMPQ_ADDR 0x04u +#define FIT_MTD_ARM_QUEUE 0x05u +#define FIT_MTD_CMD_LOG_HOST_ID 0x07u +#define FIT_MTD_CMD_LOG_TIME_STAMP_LO 0x08u +#define FIT_MTD_CMD_LOG_TIME_STAMP_HI 0x09u +#define FIT_MFD_SMART_EXCEEDED 0x10u +#define FIT_MFD_POWER_DOWN 0x11u +#define FIT_MFD_OFFLINE 0x12u +#define FIT_MFD_ONLINE 0x13u +#define FIT_MFD_FW_RESTARTING 0x14u +#define FIT_MFD_PM_ACTIVE 0x15u +#define FIT_MFD_PM_STANDBY 0x16u +#define FIT_MFD_PM_SLEEP 0x17u +#define FIT_MFD_CMD_PROGRESS 0x18u + +#define FIT_MTD_DEBUG 0xFEu +#define FIT_MFD_DEBUG 0xFFu + +#define FIT_MFD_MASK (0xFFu) +#define FIT_MFD_DATA_MASK (0xFFu) +#define FIT_MFD_MSG(x) (((x) >> 24) & FIT_MFD_MASK) +#define FIT_MFD_DATA(x) ((x) & FIT_MFD_MASK) + +/* + * Extra arg to FIT_MSG_TO_DEVICE, 64-bit r/w + * Used to set completion queue address (FIT_MTD_SET_COMPQ_ADDR) + * (was Response buffer in docs) + */ +#define FIT_MSG_TO_DEVICE_ARG 0x580u + +/* + * Hardware (ASIC) version, 32-bit r/o + */ +#define FIT_HW_VERSION 0x588u + +/* + * Scatter/gather list descriptor. + * 32-bytes and must be aligned on a 32-byte boundary. + * All fields are in little endian order. + */ +struct fit_sg_descriptor { + uint32_t control; + uint32_t byte_count; + uint64_t host_side_addr; + uint64_t dev_side_addr; + uint64_t next_desc_ptr; +}; + +#define FIT_SGD_CONTROL_NOT_LAST 0x000u +#define FIT_SGD_CONTROL_LAST 0x40Eu + +/* + * Header at the beginning of a FIT message. The header + * is followed by SSDI requests each 64 bytes. + * A FIT message can be up to 512 bytes long and must start + * on a 64-byte boundary. + */ +struct fit_msg_hdr { + uint8_t protocol_id; + uint8_t num_protocol_cmds_coalesced; + uint8_t _reserved[62]; +}; + +#define FIT_PROTOCOL_ID_FIT 1 +#define FIT_PROTOCOL_ID_SSDI 2 +#define FIT_PROTOCOL_ID_SOFIT 3 + + +#define FIT_PROTOCOL_MINOR_VER(mtd_val) ((mtd_val >> 16) & 0xF) +#define FIT_PROTOCOL_MAJOR_VER(mtd_val) ((mtd_val >> 20) & 0xF) + +/* + * Format of a completion entry. The completion queue is circular + * and must have at least as many entries as the maximum number + * of commands that may be issued to the device. + * + * There are no head/tail pointers. The cycle value is used to + * infer the presence of new completion records. + * Initially the cycle in all entries is 0, the index is 0, and + * the cycle value to expect is 1. When completions are added + * their cycle values are set to 1. When the index wraps the + * cycle value to expect is incremented. + * + * Command_context is opaque and taken verbatim from the SSDI command. + * All other fields are big endian. + */ +#define FIT_PROTOCOL_VERSION_0 0 + +/* + * Protocol major version 1 completion entry. + * The major protocol version is found in bits + * 20-23 of the FIT_MTD_FITFW_INIT response. + */ +struct fit_completion_entry_v1 { + __be32 num_returned_bytes; + uint16_t tag; + uint8_t status; /* SCSI status */ + uint8_t cycle; +}; +#define FIT_PROTOCOL_VERSION_1 1 +#define FIT_PROTOCOL_VERSION_CURRENT FIT_PROTOCOL_VERSION_1 + +struct fit_comp_error_info { + uint8_t type:7; /* 00: Bits0-6 indicates the type of sense data. */ + uint8_t valid:1; /* 00: Bit 7 := 1 ==> info field is valid. */ + uint8_t reserved0; /* 01: Obsolete field */ + uint8_t key:4; /* 02: Bits0-3 indicate the sense key. */ + uint8_t reserved2:1; /* 02: Reserved bit. */ + uint8_t bad_length:1; /* 02: Incorrect Length Indicator */ + uint8_t end_medium:1; /* 02: End of Medium */ + uint8_t file_mark:1; /* 02: Filemark */ + uint8_t info[4]; /* 03: */ + uint8_t reserved1; /* 07: Additional Sense Length */ + uint8_t cmd_spec[4]; /* 08: Command Specific Information */ + uint8_t code; /* 0C: Additional Sense Code */ + uint8_t qual; /* 0D: Additional Sense Code Qualifier */ + uint8_t fruc; /* 0E: Field Replaceable Unit Code */ + uint8_t sks_high:7; /* 0F: Sense Key Specific (MSB) */ + uint8_t sks_valid:1; /* 0F: Sense Key Specific Valid */ + uint16_t sks_low; /* 10: Sense Key Specific (LSW) */ + uint16_t reserved3; /* 12: Part of additional sense bytes (unused) */ + uint16_t uec; /* 14: Additional Sense Bytes */ + uint64_t per __packed; /* 16: Additional Sense Bytes */ + uint8_t reserved4[2]; /* 1E: Additional Sense Bytes (unused) */ +}; + + +/* Task management constants */ +#define SOFT_TASK_SIMPLE 0x00 +#define SOFT_TASK_HEAD_OF_QUEUE 0x01 +#define SOFT_TASK_ORDERED 0x02 + +/* Version zero has the last 32 bits reserved, + * Version one has the last 32 bits sg_list_len_bytes; + */ +struct skd_command_header { + __be64 sg_list_dma_address; + uint16_t tag; + uint8_t attribute; + uint8_t add_cdb_len; /* In 32 bit words */ + __be32 sg_list_len_bytes; +}; + +struct skd_scsi_request { + struct skd_command_header hdr; + unsigned char cdb[16]; +/* unsigned char _reserved[16]; */ +}; + +struct driver_inquiry_data { + uint8_t peripheral_device_type:5; + uint8_t qualifier:3; + uint8_t page_code; + __be16 page_length; + __be16 pcie_bus_number; + uint8_t pcie_device_number; + uint8_t pcie_function_number; + uint8_t pcie_link_speed; + uint8_t pcie_link_lanes; + __be16 pcie_vendor_id; + __be16 pcie_device_id; + __be16 pcie_subsystem_vendor_id; + __be16 pcie_subsystem_device_id; + uint8_t reserved1[2]; + uint8_t reserved2[3]; + uint8_t driver_version_length; + uint8_t driver_version[0x14]; +}; + +#endif /* SKD_S1120_H */ |