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Add support for sTec's pci-e flash card Kronos 

Signed-off-by: Akhil Bhansali <abhansali@stec-inc.com>
Signed-off-by: Ramprasad Chinthekindi <rchinthekindi@stec-inc.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>

Folded patch, contributions to clean up this driver from:

Jens Axboe
Dan Carpenter
Andrew Morton

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Akhil Bhansali 2013-10-15 14:19:07 -06:00 committed by Jens Axboe
parent 0317cd6de8
commit e67f86b31a
4 changed files with 6183 additions and 0 deletions
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10
drivers/block/Kconfig
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@ -316,6 +316,16 @@ config BLK_DEV_NVME
To compile this driver as a module, choose M here: the
module will be called nvme.
config BLK_DEV_SKD
tristate "STEC S1120 Block Driver"
depends on PCI
depends on 64BIT
---help---
Saying Y or M here will enable support for the
STEC, Inc. S1120 PCIe SSD.
Use device /dev/skd$N amd /dev/skd$Np$M.
config BLK_DEV_OSD
tristate "OSD object-as-blkdev support"
depends on SCSI_OSD_ULD

2
drivers/block/Makefile
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@ -23,6 +23,7 @@ obj-$(CONFIG_CDROM_PKTCDVD) += pktcdvd.o
obj-$(CONFIG_MG_DISK) += mg_disk.o
obj-$(CONFIG_SUNVDC) += sunvdc.o
obj-$(CONFIG_BLK_DEV_NVME) += nvme.o
obj-$(CONFIG_BLK_DEV_SKD) += skd.o
obj-$(CONFIG_BLK_DEV_OSD) += osdblk.o
obj-$(CONFIG_BLK_DEV_UMEM) += umem.o
@ -43,4 +44,5 @@ obj-$(CONFIG_BLK_DEV_PCIESSD_MTIP32XX) += mtip32xx/
obj-$(CONFIG_BLK_DEV_RSXX) += rsxx/
nvme-y := nvme-core.o nvme-scsi.o
skd-y := skd_main.o
swim_mod-y := swim.o swim_asm.o

5817
drivers/block/skd_main.c Normal file
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File diff suppressed because it is too large Load Diff

354
drivers/block/skd_s1120.h Normal file
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@ -0,0 +1,354 @@
/* Copyright 2012 STEC, Inc.
*
* This file is licensed under the terms of the 3-clause
* BSD License (http://opensource.org/licenses/BSD-3-Clause)
* or the GNU GPL-2.0 (http://www.gnu.org/licenses/gpl-2.0.html),
* at your option. Both licenses are also available in the LICENSE file
* distributed with this project. This file may not be copied, modified,
* or distributed except in accordance with those terms.
*/
#ifndef SKD_S1120_H
#define SKD_S1120_H
#pragma pack(push, s1120_h, 1)
/*
* 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
#ifndef SKD_OMIT_FROM_SRC_DIST
#define FIT_QCMD_QID1 (0x1 << 1)
#define FIT_QCMD_QID2 (0x2 << 1)
#define FIT_QCMD_QID3 (0x3 << 1)
#endif /* SKD_OMIT_FROM_SRC_DIST */
#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_BASE_ADDRESS_MASK (0xFFFFFFFFFFFFFFC0ull)
/*
* Control, 32-bit r/w
*/
#define FIT_CONTROL 0x500u
#ifndef SKD_OMIT_FROM_SRC_DIST
#define FIT_CR_HARD_RESET (1u << 0u)
#endif /* SKD_OMIT_FROM_SRC_DIST */
#define FIT_CR_SOFT_RESET (1u << 1u)
#ifndef SKD_OMIT_FROM_SRC_DIST
#define FIT_CR_DIS_TIMESTAMPS (1u << 6u)
#endif /* SKD_OMIT_FROM_SRC_DIST */
#define FIT_CR_ENABLE_INTERRUPTS (1u << 7u)
/*
* Status, 32-bit, r/o
*/
#define FIT_STATUS 0x510u
#define FIT_SR_DRIVE_STATE_MASK 0x000000FFu
#ifndef SKD_OMIT_FROM_SRC_DIST
#define FIT_SR_SIGNATURE (0xFF << 8)
#define FIT_SR_PIO_DMA (1 << 16)
#endif /* SKD_OMIT_FROM_SRC_DIST */
#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
#ifndef SKD_OMIT_FROM_SRC_DIST
/*
* 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)
#endif /* SKD_OMIT_FROM_SRC_DIST */
/*
* 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
#ifndef SKD_OMIT_FROM_SRC_DIST
#define FIT_MTD_DEBUG 0xFEu
#define FIT_MFD_DEBUG 0xFFu
#endif /* SKD_OMIT_FROM_SRC_DIST */
#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)
#ifndef SKD_OMIT_FROM_SRC_DIST
/*
* 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.
*/
#endif /* SKD_OMIT_FROM_SRC_DIST */
#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 {
uint32_t 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; /* 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 {
uint64_t sg_list_dma_address;
uint16_t tag;
uint8_t attribute;
uint8_t add_cdb_len; /* In 32 bit words */
uint32_t 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;
uint16_t page_length;
uint16_t pcie_bus_number;
uint8_t pcie_device_number;
uint8_t pcie_function_number;
uint8_t pcie_link_speed;
uint8_t pcie_link_lanes;
uint16_t pcie_vendor_id;
uint16_t pcie_device_id;
uint16_t pcie_subsystem_vendor_id;
uint16_t pcie_subsystem_device_id;
uint8_t reserved1[2];
uint8_t reserved2[3];
uint8_t driver_version_length;
uint8_t driver_version[0x14];
};
#pragma pack(pop, s1120_h)
#endif /* SKD_S1120_H */