3SNIC inclusion category: features bugzilla: https://gitee.com/openeuler/kernel/issues/I64M90 CVE: NA

This commit is to suppport 3SNIC 3S5XX RAID/HBA controllers. RAID controllers support RAID 0/1/5/6/10/50/60 modes; HBA controlllers support RAID 0/1/10 modes. RAID/HBA support SAS/SATA HDD/SSD.

Signed-off-by: liangry liangry1@3snic.com Reviewed-by: Jiang Yuyujiang@3snic.com Reviewed-by: Steven Song steven.song@3snic.com --- Documentation/scsi/sssraid.rst | 83 + MAINTAINERS | 7 + arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + drivers/scsi/Kconfig | 1 + drivers/scsi/Makefile | 1 + drivers/scsi/sssraid/Kconfig | 14 + drivers/scsi/sssraid/Makefile | 7 + drivers/scsi/sssraid/sssraid.h | 971 ++++++++++ drivers/scsi/sssraid/sssraid_debug.h | 34 + drivers/scsi/sssraid/sssraid_fw.c | 1724 +++++++++++++++++ drivers/scsi/sssraid/sssraid_os.c | 2337 ++++++++++++++++++++++++ 12 files changed, 5181 insertions(+) create mode 100644 Documentation/scsi/sssraid.rst create mode 100644 drivers/scsi/sssraid/Kconfig create mode 100644 drivers/scsi/sssraid/Makefile create mode 100644 drivers/scsi/sssraid/sssraid.h create mode 100644 drivers/scsi/sssraid/sssraid_debug.h create mode 100644 drivers/scsi/sssraid/sssraid_fw.c create mode 100644 drivers/scsi/sssraid/sssraid_os.c

diff --git a/Documentation/scsi/sssraid.rst b/Documentation/scsi/sssraid.rst new file mode 100644 index 000000000000..d56e5f7c478c --- /dev/null +++ b/Documentation/scsi/sssraid.rst @@ -0,0 +1,83 @@ +.. SPDX-License-Identifier: GPL-2.0 + +============================================== +SSSRAID - 3SNIC SCSI RAID Controller driver +============================================== + +This file describes the SSSRAID SCSI driver for 3SNIC +(http://www.3snic.com) RAID controllers. The SSSRAID +driver is the first generation RAID driver for 3SNIC Corp. + +For 3SNIC SSSRAID controller support, enable the SSSRAID driver +when configuring the kernel. + +SSSRAID specific entries in /sys +================================= + +SSSRAID host attributes +------------------------ + - /sys/class/scsi_host/host*/csts_pp + - /sys/class/scsi_host/host*/csts_shst + - /sys/class/scsi_host/host*/csts_cfs + - /sys/class/scsi_host/host*/csts_rdy + - /sys/class/scsi_host/host*/fw_version + + The host csts_pp attribute is a read only attribute. This attribute + indicates whether the controller is processing commands. If this attribute + is set to ‘1’, then the controller is processing commands normally. If + this attribute is cleared to ‘0’, then the controller has temporarily stopped + processing commands in order to handle an event (e.g., firmware activation). + + The host csts_shst attribute is a read only attribute. This attribute + indicates status of shutdown processing.The shutdown status values are defined + as: + ====== ============================== + Value Definition + ====== ============================== + 00b Normal operation + 01b Shutdown processing occurring + 10b Shutdown processing complete + 11b Reserved + ====== ============================== + The host csts_cfs attribute is a read only attribute. This attribute is set to + ’1’ when a fatal controller error occurred that could not be communicated in the + appropriate Completion Queue. This bit is cleared to ‘0’ when a fatal controller + error has not occurred. + + The host csts_rdy attribute is a read only attribute. This attribute is set to + ‘1’ when the controller is ready to process submission queue entries. + + The fw_version attribute is read-only and will return the driver version and the + controller firmware version. + +SSSRAID scsi device attributes +------------------------------ + - /sys/class/scsi_device/X:X:X:X/device/raid_level + - /sys/class/scsi_device/X:X:X:X/device/raid_state + - /sys/class/scsi_device/X:X:X:X/device/raid_resync + + The device raid_level attribute is a read only attribute. This attribute indicates + RAID level of scsi device(will dispaly "NA" if scsi device is not virtual disk type). + + The device raid_state attribute is read-only and indicates RAID status of scsi + device(will dispaly "NA" if scsi device is not virtual disk type). + + The device raid_resync attribute is read-only and indicates RAID rebuild processing + of scsi device(will dispaly "NA" if scsi device is not virtual disk type). + +Supported devices +================= + + =================== ======= ======================================= + PCI ID (pci.ids) OEM Product + =================== ======= ======================================= + 1F3F:2100 3SNIC 3S510(HBA:8Ports,1G DDR) + 1F3F:2100 3SNIC 3S520(HBA:16Ports,1G DDR) + 1F3F:2100 3SNIC 3S530(HBA:32Ports,1G DDR) + 1F3F:2100 3SNIC 3S540(HBA:40Ports,1G DDR) + 1F3F:2200 3SNIC 3S580(RAID:16Ports,2G cache) + 1F3F:2200 3SNIC 3S585(RAID:16Ports,4G cache) + 1F3F:2200 3SNIC 3S590(RAID:32Ports,4G cache) + 1F3F:2200 3SNIC 3S5A0(RAID:40Ports,2G cache) + 1F3F:2200 3SNIC 3S5A5(RAID:40Ports,4G cache) + =================== ======= ======================================= diff --git a/MAINTAINERS b/MAINTAINERS index 9ae209633628..e6470640f764 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -16669,6 +16669,13 @@ M: Jan-Benedict Glaw jbglaw@lug-owl.de S: Maintained F: arch/alpha/kernel/srm_env.c

+SSSRAID SCSI/Raid DRIVERS +M: Steven Song steven.song@3snic.com +L: linux-scsi@vger.kernel.org +S: Maintained +F: Documentation/scsi/sssraid.rst +F: drivers/scsi/sssraid/ + ST LSM6DSx IMU IIO DRIVER M: Lorenzo Bianconi lorenzo.bianconi83@gmail.com L: linux-iio@vger.kernel.org diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 30384eacad4f..dc4ba0d2b694 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -2394,6 +2394,7 @@ CONFIG_SCSI_HISI_SAS_DEBUGFS_DEFAULT_ENABLE=y # CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set CONFIG_MEGARAID_SAS=m +CONFIG_SCSI_3SNIC_SSSRAID=m CONFIG_SCSI_MPT3SAS=m CONFIG_SCSI_MPT2SAS_MAX_SGE=128 CONFIG_SCSI_MPT3SAS_MAX_SGE=128 diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index 5ada612f1d75..df16f123515b 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -2355,6 +2355,7 @@ CONFIG_SCSI_AACRAID=m # CONFIG_MEGARAID_LEGACY is not set CONFIG_MEGARAID_SAS=m CONFIG_SCSI_MPT3SAS=m +CONFIG_SCSI_3SNIC_SSSRAID=m CONFIG_SCSI_MPT2SAS_MAX_SGE=128 CONFIG_SCSI_MPT3SAS_MAX_SGE=128 CONFIG_SCSI_MPT2SAS=m diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 0fbe4edeccd0..7339d6179e5a 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -481,6 +481,7 @@ config SCSI_ARCMSR

source "drivers/scsi/esas2r/Kconfig" source "drivers/scsi/megaraid/Kconfig.megaraid" +source "drivers/scsi/sssraid/Kconfig" source "drivers/scsi/mpt3sas/Kconfig" source "drivers/scsi/smartpqi/Kconfig" source "drivers/scsi/ufs/Kconfig" diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index 78a3c832394c..01bb908fb832 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -92,6 +92,7 @@ obj-$(CONFIG_SCSI_CHELSIO_FCOE) += csiostor/ obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o obj-$(CONFIG_SCSI_HPSA) += hpsa.o obj-$(CONFIG_SCSI_SMARTPQI) += smartpqi/ +obj-$(CONFIG_SCSI_3SNIC_SSSRAID) += sssraid/ obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/ obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o obj-$(CONFIG_SCSI_DC395x) += dc395x.o diff --git a/drivers/scsi/sssraid/Kconfig b/drivers/scsi/sssraid/Kconfig new file mode 100644 index 000000000000..769f68732bf3 --- /dev/null +++ b/drivers/scsi/sssraid/Kconfig @@ -0,0 +1,14 @@ +# +# Kernel configuration file for the 3SNIC +# + +config SCSI_3SNIC_SSSRAID + tristate "3SNIC sssraid Adapter" + depends on PCI && SCSI + select BLK_DEV_BSGLIB + depends on ARM64 || X86_64 + help + This driver supports 3SNIC 3S5xx serial RAID controller, which has + PCI Express Gen4 interface with host and supports SAS/SATA HDD/SSD. + To compile this driver as a module, choose M here: the module will + be called sssraid. diff --git a/drivers/scsi/sssraid/Makefile b/drivers/scsi/sssraid/Makefile new file mode 100644 index 000000000000..c80605866b42 --- /dev/null +++ b/drivers/scsi/sssraid/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the 3SNIC sssraid drivers. +# + +obj-$(CONFIG_SCSI_3SNIC_SSSRAID) += sssraid.o + +sssraid-objs := sssraid_os.o sssraid_fw.o diff --git a/drivers/scsi/sssraid/sssraid.h b/drivers/scsi/sssraid/sssraid.h new file mode 100644 index 000000000000..bae668ef9c98 --- /dev/null +++ b/drivers/scsi/sssraid/sssraid.h @@ -0,0 +1,971 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2022 3SNIC Information Technology, Ltd */ + +/* 3SNIC RAID SSSXXX Series Linux Driver */ + +#ifndef __SSSRAID_H_ +#define __SSSRAID_H_ + +#define SSSRAID_DRIVER_VERSION "1.0.0.0" +#define SSSRAID_DRIVER_RELDATE "12-December-2022" + +#define SSSRAID_DRIVER_NAME "sssraid" + +#define SSSRAID_NAME_LENGTH 32 + +/* + * SSSRAID Vendor ID and Device IDs + */ +#define PCI_VENDOR_ID_3SNIC_LOGIC 0x1F3F + +#define SSSRAID_SERVER_DEVICE_HBA_DID 0x2100 +#define SSSRAID_SERVER_DEVICE_RAID_DID 0x2200 + +#define SSSRAID_CAP_MQES(cap) ((cap) & 0xffff) +#define SSSRAID_CAP_STRIDE(cap) (((cap) >> 32) & 0xf) +#define SSSRAID_CAP_MPSMIN(cap) (((cap) >> 48) & 0xf) +#define SSSRAID_CAP_MPSMAX(cap) (((cap) >> 52) & 0xf) +#define SSSRAID_CAP_TIMEOUT(cap) (((cap) >> 24) & 0xff) +#define SSSRAID_CAP_DMAMASK(cap) (((cap) >> 37) & 0xff) + +#define SSSRAID_DEFAULT_MAX_CHANNEL 4 +#define SSSRAID_DEFAULT_MAX_ID 240 +#define SSSRAID_DEFAULT_MAX_LUN_PER_HOST 8 +#define MAX_SECTORS 2048 + +/* + * Time define + */ +#define SSSRAID_WATCHDOG_INTERVAL 1000 /* in milli seconds */ +#define SSSRAID_PORTENABLE_TIMEOUT 300 + +/* + * SSSRAID queue and entry size for Admin and I/O type + */ +#define IO_SQE_SIZE sizeof(struct sssraid_ioq_command) +#define ADMIN_SQE_SIZE sizeof(struct sssraid_admin_command) +#define SQE_SIZE(qid) (((qid) > 0) ? IO_SQE_SIZE : ADMIN_SQE_SIZE) +#define CQ_SIZE(depth) ((depth) * sizeof(struct sssraid_completion)) +#define SQ_SIZE(qid, depth) ((depth) * SQE_SIZE(qid)) + +#define SENSE_SIZE(depth) ((depth) * SCSI_SENSE_BUFFERSIZE) + +#define SSSRAID_AQ_DEPTH 128 +#define SSSRAID_NR_AEN_COMMANDS 16 +#define SSSRAID_AQ_BLK_MQ_DEPTH (SSSRAID_AQ_DEPTH - SSSRAID_NR_AEN_COMMANDS) +#define SSSRAID_AQ_MQ_TAG_DEPTH (SSSRAID_AQ_BLK_MQ_DEPTH - 1) + +#define SSSRAID_ADMIN_QUEUE_NUM 1 +#define SSSRAID_PTCMDS_PERQ 1 +#define SSSRAID_IO_BLK_MQ_DEPTH (hdev->scsi_qd) +#define SSSRAID_NR_IOQ_PTCMDS (SSSRAID_PTCMDS_PERQ * hdev->shost->nr_hw_queues) + +#define FUA_MASK 0x08 +#define SSSRAID_MINORS BIT(MINORBITS) +#define SSSRAID_RW_FUA BIT(14) + +#define COMMAND_IS_WRITE(cmd) ((cmd)->common.opcode & 1) + +#define SSSRAID_IO_IOSQES 7 +#define SSSRAID_IO_IOCQES 4 +#define PRP_ENTRY_SIZE 8 + +#define SMALL_POOL_SIZE 256 +#define MAX_SMALL_POOL_NUM 16 +#define MAX_CMD_PER_DEV 64 +#define MAX_CDB_LEN 16 + +#define SSSRAID_UP_TO_MULTY4(x) (((x) + 4) & (~0x03)) + +#define CQE_STATUS_SUCCESS (0x0) + +#define IO_6_DEFAULT_TX_LEN 256 + +#define SGES_PER_PAGE (PAGE_SIZE / sizeof(struct sssraid_sgl_desc)) + +#define SSSRAID_CAP_TIMEOUT_UNIT_MS (HZ / 2) + +extern u32 admin_tmout; +#define ADMIN_TIMEOUT (admin_tmout * HZ) + +#define SSSRAID_WAIT_ABNL_CMD_TIMEOUT 6 + +#define SSSRAID_DMA_MSK_BIT_MAX 64 + +enum { + SSSRAID_SGL_FMT_DATA_DESC = 0x00, + SSSRAID_SGL_FMT_SEG_DESC = 0x02, + SSSRAID_SGL_FMT_LAST_SEG_DESC = 0x03, + SSSRAID_KEY_SGL_FMT_DATA_DESC = 0x04, + SSSRAID_TRANSPORT_SGL_DATA_DESC = 0x05 +}; + + +enum { + SSSRAID_REQ_CANCELLED = (1 << 0), + SSSRAID_REQ_USERCMD = (1 << 1), +}; + +enum { + SSSRAID_SC_SUCCESS = 0x0, + SSSRAID_SC_INVALID_OPCODE = 0x1, + SSSRAID_SC_INVALID_FIELD = 0x2, + + SSSRAID_SC_ABORT_LIMIT = 0x103, + SSSRAID_SC_ABORT_MISSING = 0x104, + SSSRAID_SC_ASYNC_LIMIT = 0x105, + + SSSRAID_SC_DNR = 0x4000, +}; + +enum { + SSSRAID_REG_CAP = 0x0000, + SSSRAID_REG_CC = 0x0014, + SSSRAID_REG_CSTS = 0x001c, + SSSRAID_REG_AQA = 0x0024, + SSSRAID_REG_ASQ = 0x0028, + SSSRAID_REG_ACQ = 0x0030, + SSSRAID_REG_DBS = 0x1000, +}; + +enum { + SSSRAID_CC_ENABLE = 1 << 0, + SSSRAID_CC_CSS_NVM = 0 << 4, + SSSRAID_CC_MPS_SHIFT = 7, + SSSRAID_CC_AMS_SHIFT = 11, + SSSRAID_CC_SHN_SHIFT = 14, + SSSRAID_CC_IOSQES_SHIFT = 16, + SSSRAID_CC_IOCQES_SHIFT = 20, + SSSRAID_CC_AMS_RR = 0 << SSSRAID_CC_AMS_SHIFT, + SSSRAID_CC_SHN_NONE = 0 << SSSRAID_CC_SHN_SHIFT, + SSSRAID_CC_IOSQES = SSSRAID_IO_IOSQES << SSSRAID_CC_IOSQES_SHIFT, + SSSRAID_CC_IOCQES = SSSRAID_IO_IOCQES << SSSRAID_CC_IOCQES_SHIFT, + SSSRAID_CC_SHN_NORMAL = 1 << SSSRAID_CC_SHN_SHIFT, + SSSRAID_CC_SHN_MASK = 3 << SSSRAID_CC_SHN_SHIFT, + SSSRAID_CSTS_CFS_SHIFT = 1, + SSSRAID_CSTS_SHST_SHIFT = 2, + SSSRAID_CSTS_PP_SHIFT = 5, + SSSRAID_CSTS_RDY = 1 << 0, + SSSRAID_CSTS_SHST_CMPLT = 2 << 2, + SSSRAID_CSTS_SHST_MASK = 3 << 2, + SSSRAID_CSTS_CFS_MASK = 1 << SSSRAID_CSTS_CFS_SHIFT, + SSSRAID_CSTS_PP_MASK = 1 << SSSRAID_CSTS_PP_SHIFT, +}; + +enum { + SSSRAID_ADMIN_DELETE_SQ = 0x00, + SSSRAID_ADMIN_CREATE_SQ = 0x01, + SSSRAID_ADMIN_DELETE_CQ = 0x04, + SSSRAID_ADMIN_CREATE_CQ = 0x05, + SSSRAID_ADMIN_ABORT_CMD = 0x08, + SSSRAID_ADMIN_SET_FEATURES = 0x09, + SSSRAID_ADMIN_ASYNC_EVENT = 0x0c, + SSSRAID_ADMIN_GET_INFO = 0xc6, + SSSRAID_ADMIN_RESET = 0xc8, +}; + +enum { + SSSRAID_GET_INFO_CTRL = 0, + SSSRAID_GET_INFO_DEV_LIST = 1, +}; + +enum sssraid_scsi_rst_type { + SSSRAID_RESET_TARGET = 0, + SSSRAID_RESET_BUS = 1, +}; + +enum { + SSSRAID_AEN_ERROR = 0, + SSSRAID_AEN_NOTICE = 2, + SSSRAID_AEN_VS = 7, +}; + +enum { + SSSRAID_AEN_DEV_CHANGED = 0x00, + SSSRAID_AEN_FW_ACT_START = 0x01, + SSSRAID_AEN_HOST_PROBING = 0x10, +}; + +enum { + SSSRAID_AEN_TIMESYN = 0x00, + SSSRAID_AEN_FW_ACT_FINISH = 0x02, + SSSRAID_AEN_EVENT_MIN = 0x80, + SSSRAID_AEN_EVENT_MAX = 0xff, +}; + +enum { + SSSRAID_CMD_WRITE = 0x01, + SSSRAID_CMD_READ = 0x02, + + SSSRAID_CMD_NONIO_NONE = 0x80, + SSSRAID_CMD_NONIO_TODEV = 0x81, + SSSRAID_CMD_NONIO_FROMDEV = 0x82, +}; + +enum { + SSSRAID_QUEUE_PHYS_CONTIG = (1 << 0), + SSSRAID_CQ_IRQ_ENABLED = (1 << 1), + + SSSRAID_FEAT_NUM_QUEUES = 0x07, + SSSRAID_FEAT_ASYNC_EVENT = 0x0b, + SSSRAID_FEAT_TIMESTAMP = 0x0e, +}; + +enum sssraid_state { + SSSRAID_NEW, + SSSRAID_LIVE, + SSSRAID_RESETTING, + SSSRAID_DELETING, + SSSRAID_DEAD, +}; + +enum { + SSSRAID_CARD_HBA, + SSSRAID_CARD_RAID, +}; + +enum sssraid_cmd_type { + SSSRAID_CMD_ADM, + SSSRAID_CMD_IOPT, +}; + +/* + * SSSRAID completion queue entry struct + */ +struct sssraid_completion { + __le32 result; + union { + struct { + __u8 sense_len; + __u8 resv[3]; + }; + __le32 result1; + }; + __le16 sq_head; + __le16 sq_id; + __le16 cmd_id; + __le16 status; +}; + +/* + * SSSRAID firmware controller properties + */ +struct sssraid_ctrl_info { + __le32 nd; + __le16 max_cmds; + __le16 max_channel; + __le32 max_tgt_id; + __le16 max_lun; + __le16 max_num_sge; + __le16 lun_num_in_boot; + __u8 mdts; + __u8 acl; + __u8 aerl; + __u8 card_type; + __u16 rsvd; + __le32 rtd3e; + __u8 sn[32]; + __u8 fr[16]; + __u8 rsvd1[4020]; +}; + +struct sssraid_intr_info { + struct sssraid_dev *hdev; + u16 msix_index; + struct sssraid_cqueue *cqinfo; + char name[SSSRAID_NAME_LENGTH]; +}; + +struct sssraid_fwevt { + struct list_head list; + struct work_struct work; + struct sssraid_dev *hdev; + u16 event_id; + bool send_ack; + bool process_evt; + u32 evt_ctx; + struct kref ref_count; + char event_data[0] __aligned(4); +}; + +/* + * SSSRAID private device struct definition + */ +struct sssraid_dev { + struct pci_dev *pdev; + struct Scsi_Host *shost; + struct sssraid_squeue *sqinfo; + struct sssraid_cqueue *cqinfo; + struct dma_pool *prp_page_pool; + struct dma_pool *prp_small_pool[MAX_SMALL_POOL_NUM]; + void __iomem *bar; + + u32 init_done_queue_cnt; + u32 ioq_depth; + u32 db_stride; + u32 __iomem *dbs; + struct rw_semaphore devices_rwsem; + int numa_node; + u32 page_size; + u32 ctrl_config; + u64 cap; + u32 instance; + u32 scsi_qd; + struct sssraid_ctrl_info *ctrl_info; + struct sssraid_dev_info *devices; + + int logging_level; + + char name[SSSRAID_NAME_LENGTH]; + int cpu_count; + /* + * before_affinity_msix_cnt is + * min("FW support IO Queue count", num_online_cpus)+1 + */ + u16 before_affinity_msix_cnt; + + struct sssraid_cmd *adm_cmds; + struct list_head adm_cmd_list; + spinlock_t adm_cmd_lock; + + struct sssraid_cmd *ioq_ptcmds; + struct list_head ioq_pt_list; + spinlock_t ioq_pt_lock; + + int reset_flag; + + enum sssraid_state state; + spinlock_t state_lock; + + struct request_queue *bsg_queue; + + u8 intr_enabled; + + struct sssraid_intr_info *intr_info; + u32 intr_info_count; + + char watchdog_work_q_name[20]; + struct workqueue_struct *watchdog_work_q; + struct delayed_work watchdog_work; + spinlock_t watchdog_lock; + + char fwevt_worker_name[SSSRAID_NAME_LENGTH]; + struct workqueue_struct *fwevt_worker_thread; + spinlock_t fwevt_lock; + struct list_head fwevt_list; + + struct sssraid_fwevt *current_event; +}; + +/* + * SSSRAID scatter list descriptor + */ +struct sssraid_sgl_desc { + __le64 addr; + __le32 length; + __u8 rsvd[3]; + __u8 type; +}; + +union sssraid_data_ptr { + struct { + __le64 prp1; + __le64 prp2; + }; + struct sssraid_sgl_desc sgl; +}; + +/* + * SSSRAID general admin class command format struct + */ +struct sssraid_admin_common_command { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __le32 cdw2[4]; + union sssraid_data_ptr dptr; + __le32 cdw10; + __le32 cdw11; + __le32 cdw12; + __le32 cdw13; + __le32 cdw14; + __le32 cdw15; +}; + +struct sssraid_features { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __u64 rsvd2[2]; + union sssraid_data_ptr dptr; + __le32 fid; + __le32 dword11; + __le32 dword12; + __le32 dword13; + __le32 dword14; + __le32 dword15; +}; + +/* + * SSSRAID create completion queue command struct + */ +struct sssraid_create_cq { + __u8 opcode; + __u8 flags; + __le16 command_id; + __u32 rsvd1[5]; + __le64 prp1; + __u64 rsvd8; + __le16 cqid; + __le16 qsize; + __le16 cq_flags; + __le16 irq_vector; + __u32 rsvd12[4]; +}; + +/* + * SSSRAID create submission queue command struct + */ +struct sssraid_create_sq { + __u8 opcode; + __u8 flags; + __le16 command_id; + __u32 rsvd1[5]; + __le64 prp1; + __u64 rsvd8; + __le16 sqid; + __le16 qsize; + __le16 sq_flags; + __le16 cqid; + __u32 rsvd12[4]; +}; + +/* + * SSSRAID delete submission queue command struct + */ +struct sssraid_delete_queue { + __u8 opcode; + __u8 flags; + __le16 command_id; + __u32 rsvd1[9]; + __le16 qid; + __u16 rsvd10; + __u32 rsvd11[5]; +}; + +/* + * SSSRAID access to information command struct + */ +struct sssraid_get_info { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __u32 rsvd2[4]; + union sssraid_data_ptr dptr; + __u8 type; + __u8 rsvd10[3]; + __le32 cdw11; + __u32 rsvd12[4]; +}; + +/* + * User command struct + */ +struct sssraid_usr_cmd { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + union { + struct { + __le16 subopcode; + __le16 rsvd1; + } info_0; + __le32 cdw2; + }; + union { + struct { + __le16 data_len; + __le16 param_len; + } info_1; + __le32 cdw3; + }; + __u64 metadata; + union sssraid_data_ptr dptr; + __le32 cdw10; + __le32 cdw11; + __le32 cdw12; + __le32 cdw13; + __le32 cdw14; + __le32 cdw15; +}; + +enum { + SSSRAID_CMD_FLAG_SGL_METABUF = (1 << 6), + SSSRAID_CMD_FLAG_SGL_METASEG = (1 << 7), + SSSRAID_CMD_FLAG_SGL_ALL = SSSRAID_CMD_FLAG_SGL_METABUF | SSSRAID_CMD_FLAG_SGL_METASEG, +}; + +enum sssraid_cmd_state { + SSSRAID_CMD_IDLE = 0, + SSSRAID_CMD_IN_FLIGHT = 1, + SSSRAID_CMD_COMPLETE = 2, + SSSRAID_CMD_TIMEOUT = 3, + SSSRAID_CMD_TMO_COMPLETE = 4, +}; + +/* + * SSSRAID abort command struct + */ +struct sssraid_abort_cmd { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __u64 rsvd2[4]; + __le16 sqid; + __le16 cid; + __u32 rsvd11[5]; +}; + +/* + * SSSRAID reset command struct + */ +struct sssraid_reset_cmd { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __u64 rsvd2[4]; + __u8 type; + __u8 rsvd10[3]; + __u32 rsvd11[5]; +}; + +/* + * SSSRAID admin class command set struct + */ +struct sssraid_admin_command { + union { + struct sssraid_admin_common_command common; + struct sssraid_features features; + struct sssraid_create_cq create_cq; + struct sssraid_create_sq create_sq; + struct sssraid_delete_queue delete_queue; + struct sssraid_get_info get_info; + struct sssraid_abort_cmd abort; + struct sssraid_reset_cmd reset; + struct sssraid_usr_cmd usr_cmd; + }; +}; + +/* + * SSSRAID general IO class command format struct + */ +struct sssraid_ioq_common_command { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __le16 sense_len; + __u8 cdb_len; + __u8 rsvd2; + __le32 cdw3[3]; + union sssraid_data_ptr dptr; + __le32 cdw10[6]; + __u8 cdb[32]; + __le64 sense_addr; + __le32 cdw26[6]; +}; + +/* + * SSSRAID read or write command struct + */ +struct sssraid_rw_command { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __le16 sense_len; + __u8 cdb_len; + __u8 rsvd2; + __u32 rsvd3[3]; + union sssraid_data_ptr dptr; + __le64 slba; + __le16 nlb; + __le16 control; + __u32 rsvd13[3]; + __u8 cdb[32]; + __le64 sense_addr; + __u32 rsvd26[6]; +}; + +struct sssraid_scsi_nonio { + __u8 opcode; + __u8 flags; + __le16 command_id; + __le32 hdid; + __le16 sense_len; + __u8 cdb_length; + __u8 rsvd2; + __u32 rsvd3[3]; + union sssraid_data_ptr dptr; + __u32 rsvd10[5]; + __le32 buffer_len; + __u8 cdb[32]; + __le64 sense_addr; + __u32 rsvd26[6]; +}; + +/* + * SSSRAID IO class command struct + */ +struct sssraid_ioq_command { + union { + struct sssraid_ioq_common_command common; + struct sssraid_rw_command rw; + struct sssraid_scsi_nonio scsi_nonio; + }; +}; + +/* + * SSSRAID passthru command struct + */ +struct sssraid_passthru_common_cmd { + __u8 opcode; + __u8 flags; + __u16 rsvd0; + __u32 nsid; + union { + struct { + __u16 subopcode; + __u16 rsvd1; + } info_0; + __u32 cdw2; + }; + union { + struct { + __u16 data_len; + __u16 param_len; + } info_1; + __u32 cdw3; + }; + __u64 metadata; + + __u64 addr; + __u64 prp2; + + __u32 cdw10; + __u32 cdw11; + __u32 cdw12; + __u32 cdw13; + __u32 cdw14; + __u32 cdw15; + __u32 timeout_ms; + __u32 result0; + __u32 result1; +}; + +struct sssraid_ioq_passthru_cmd { + __u8 opcode; + __u8 flags; + __u16 rsvd0; + __u32 nsid; + union { + struct { + __u16 res_sense_len; + __u8 cdb_len; + __u8 rsvd0; + } info_0; + __u32 cdw2; + }; + union { + struct { + __u16 subopcode; + __u16 rsvd1; + } info_1; + __u32 cdw3; + }; + union { + struct { + __u16 rsvd; + __u16 param_len; + } info_2; + __u32 cdw4; + }; + __u32 cdw5; + __u64 addr; + __u64 prp2; + union { + struct { + __u16 eid; + __u16 sid; + } info_3; + __u32 cdw10; + }; + union { + struct { + __u16 did; + __u8 did_flag; + __u8 rsvd2; + } info_4; + __u32 cdw11; + }; + __u32 cdw12; + __u32 cdw13; + __u32 cdw14; + __u32 data_len; + __u32 cdw16; + __u32 cdw17; + __u32 cdw18; + __u32 cdw19; + __u32 cdw20; + __u32 cdw21; + __u32 cdw22; + __u32 cdw23; + __u64 sense_addr; + __u32 cdw26[4]; + __u32 timeout_ms; + __u32 result0; + __u32 result1; +}; + +struct sssraid_bsg_request { + u32 msgcode; + u32 control; + union { + struct sssraid_passthru_common_cmd admcmd; + struct sssraid_ioq_passthru_cmd ioqcmd; + }; +}; + +enum { + SSSRAID_BSG_ADM, + SSSRAID_BSG_IOQ, +}; + +/* + * define the transfer command struct + */ +struct sssraid_cmd { + u16 qid; + u16 cid; + u32 result0; + u32 result1; + u16 status; + void *priv; + enum sssraid_cmd_state state; + struct completion cmd_done; + struct list_head list; +}; + +/* + * define the SSSRAID physical queue struct + */ +struct sssraid_squeue { + struct sssraid_dev *hdev; + spinlock_t sq_lock; /* spinlock for lock handling */ + + void *sq_cmds; + + dma_addr_t sq_dma_addr; + u32 __iomem *q_db; + u8 cq_phase; + u8 sqes; + u16 qidx; + u16 sq_tail; + u16 last_cq_head; + u16 q_depth; + void *sense; + dma_addr_t sense_dma_addr; + struct dma_pool *prp_small_pool; +}; + +struct sssraid_cqueue { + struct sssraid_dev *hdev; + + spinlock_t cq_lock ____cacheline_aligned_in_smp; /* spinlock for lock handling */ + + struct sssraid_completion *cqes; + + dma_addr_t cq_dma_addr; + u8 cq_phase; + u16 cq_head; + u16 last_cq_head; +}; + +/* + * define the SSSRAID IO queue descriptor struct + */ +struct sssraid_iod { + struct sssraid_squeue *sqinfo; + enum sssraid_cmd_state state; + int npages; + u32 nsge; + u32 length; + bool use_sgl; + dma_addr_t first_dma; + void *sense; + dma_addr_t sense_dma; + struct scatterlist *sg; + void *list[0]; +}; + +/* + * define the SSSRAID scsi device attribution and information + */ +#define SSSRAID_DEV_INFO_ATTR_BOOT(attr) ((attr) & 0x01) +#define SSSRAID_DEV_INFO_ATTR_VD(attr) (((attr) & 0x02) == 0x0) +#define SSSRAID_DEV_INFO_ATTR_PT(attr) (((attr) & 0x22) == 0x02) +#define SSSRAID_DEV_INFO_ATTR_RAWDISK(attr) ((attr) & 0x20) +#define SSSRAID_DEV_DISK_TYPE(attr) ((attr) & 0x1e) + +#define SSSRAID_DEV_INFO_FLAG_VALID(flag) ((flag) & 0x01) +#define SSSRAID_DEV_INFO_FLAG_CHANGE(flag) ((flag) & 0x02) + +/* + * define the SSSRAID scsi device identifier + */ +enum { + SSSRAID_SAS_HDD_VD = 0x04, + SSSRAID_SATA_HDD_VD = 0x08, + SSSRAID_SAS_SSD_VD = 0x0c, + SSSRAID_SATA_SSD_VD = 0x10, + SSSRAID_NVME_SSD_VD = 0x14, + SSSRAID_SAS_HDD_PD = 0x06, + SSSRAID_SATA_HDD_PD = 0x0a, + SSSRAID_SAS_SSD_PD = 0x0e, + SSSRAID_SATA_SSD_PD = 0x12, + SSSRAID_NVME_SSD_PD = 0x16, +}; + +/* + * define the SSSRAID scsi device queue depth + */ +#define SSSRAID_HDD_PD_QD 64 +#define SSSRAID_HDD_VD_QD 256 +#define SSSRAID_SSD_PD_QD 64 +#define SSSRAID_SSD_VD_QD 256 + +#define BGTASK_TYPE_REBUILD 4 +#define USR_CMD_READ 0xc2 +#define USR_CMD_RDLEN 0x1000 +#define USR_CMD_VDINFO 0x704 +#define USR_CMD_BGTASK 0x504 +#define VDINFO_PARAM_LEN 0x04 + +/* + * SSSRAID virtual device information struct + */ +struct sssraid_vd_info { + __u8 name[32]; + __le16 id; + __u8 rg_id; + __u8 rg_level; + __u8 sg_num; + __u8 sg_disk_num; + __u8 vd_status; + __u8 vd_type; + __u8 rsvd1[4056]; +}; + +#define MAX_REALTIME_BGTASK_NUM 32 + +struct bgtask_info { + __u8 type; + __u8 progress; + __u8 rate; + __u8 rsvd0; + __le16 vd_id; + __le16 time_left; + __u8 rsvd1[4]; +}; + +struct sssraid_bgtask { + __u8 sw; + __u8 task_num; + __u8 rsvd[6]; + struct bgtask_info bgtask[MAX_REALTIME_BGTASK_NUM]; +}; + +/* + * SSSRAID scsi device information struct + */ +struct sssraid_dev_info { + __le32 hdid; + __le16 target; + __u8 channel; + __u8 lun; + __u8 attr; + __u8 flag; + __le16 max_io_kb; +}; + +#define IOQ_PT_DATA_LEN 4096 +#define MAX_DEV_ENTRY_PER_PAGE_4K 340 +struct sssraid_dev_list { + __le32 dev_num; + __u32 rsvd0[3]; + struct sssraid_dev_info devices[MAX_DEV_ENTRY_PER_PAGE_4K]; +}; + +/* + * SSSRAID scsi device host data struct + */ +struct sssraid_sdev_hostdata { + u32 hdid; + u16 max_io_kb; + u8 attr; + u8 flag; + u8 rg_id; + u8 rsvd[3]; +}; + +extern unsigned char small_pool_num; +extern u32 io_queue_depth; +irqreturn_t sssraid_isr_poll(int irq, void *privdata); +bool sssraid_poll_cq(struct sssraid_dev *hdev, u16 qidx, int cid); +void sssraid_submit_cmd(struct sssraid_squeue *sqinfo, const void *cmd); +int sssraid_get_dev_list(struct sssraid_dev *hdev, struct sssraid_dev_info *devices); +int sssraid_submit_admin_sync_cmd(struct sssraid_dev *hdev, struct sssraid_admin_command *cmd, + u32 *result0, u32 *result1, u32 timeout); +int sssraid_send_abort_cmd(struct sssraid_dev *hdev, u32 hdid, u16 qidx, u16 cid); +int sssraid_send_reset_cmd(struct sssraid_dev *hdev, u8 type, u32 hdid); +void sssraid_adm_timeout(struct sssraid_dev *hdev, struct sssraid_cmd *cmd); +int sssraid_init_ioc(struct sssraid_dev *hdev, u8 re_init); +void sssraid_cleanup_ioc(struct sssraid_dev *hdev, u8 re_init); +int sssraid_soft_reset_handler(struct sssraid_dev *hdev); +void sssraid_free_iod_res(struct sssraid_dev *hdev, struct sssraid_iod *iod); +bool sssraid_change_host_state(struct sssraid_dev *hdev, enum sssraid_state newstate); +int sssraid_configure_timestamp(struct sssraid_dev *hdev); +int sssraid_init_ctrl_info(struct sssraid_dev *hdev); +struct sssraid_cmd *sssraid_get_cmd(struct sssraid_dev *hdev, enum sssraid_cmd_type type); +void sssraid_put_cmd(struct sssraid_dev *hdev, struct sssraid_cmd *cmd, + enum sssraid_cmd_type type); +int sssraid_send_event_ack(struct sssraid_dev *hdev, u8 event, + u32 event_ctx, u16 cid); +struct sssraid_fwevt *sssraid_alloc_fwevt(int len); +void sssraid_fwevt_add_to_list(struct sssraid_dev *hdev, + struct sssraid_fwevt *fwevt); +void sssraid_cleanup_fwevt_list(struct sssraid_dev *hdev); +void sssraid_ioc_enable_intr(struct sssraid_dev *hdev); +void sssraid_ioc_disable_intr(struct sssraid_dev *hdev); +void sssraid_cleanup_resources(struct sssraid_dev *hdev); +void sssraid_complete_cqes(struct sssraid_dev *hdev, u16 qidx, u16 start, u16 end); +int sssraid_io_map_data(struct sssraid_dev *hdev, struct sssraid_iod *iod, + struct scsi_cmnd *scmd, struct sssraid_ioq_command *ioq_cmd); +void sssraid_map_status(struct sssraid_iod *iod, struct scsi_cmnd *scmd, + struct sssraid_completion *cqe); +void sssraid_scan_disk(struct sssraid_dev *hdev); +void sssraid_complete_aen(struct sssraid_dev *hdev, struct sssraid_completion *cqe); +void sssraid_back_all_io(struct sssraid_dev *hdev); + +static inline void **sssraid_iod_list(struct sssraid_iod *iod) +{ + return iod->list; +} + +#end diff --git a/drivers/scsi/sssraid/sssraid_debug.h b/drivers/scsi/sssraid/sssraid_debug.h new file mode 100644 index 000000000000..d48c57e275f7 --- /dev/null +++ b/drivers/scsi/sssraid/sssraid_debug.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2022 3SNIC Information Technology, Ltd */ + +/* 3SNIC RAID SSSXXX Series Linux Driver */ + +#ifndef SSSRAID_DEBUG_H_INCLUDED +#define SSSRAID_DEBUG_H_INCLUDED + +/* + * debug levels + */ +#define SSSRAID_DEBUG 0x00000001 + +/* + * debug macros + */ + +#define ioc_err(ioc, fmt, ...) \ + pr_err("%s: " fmt, (ioc)->name, ##__VA_ARGS__) +#define ioc_notice(ioc, fmt, ...) \ + pr_notice("%s: " fmt, (ioc)->name, ##__VA_ARGS__) +#define ioc_warn(ioc, fmt, ...) \ + pr_warn("%s: " fmt, (ioc)->name, ##__VA_ARGS__) +#define ioc_info(ioc, fmt, ...) \ + pr_info("%s: " fmt, (ioc)->name, ##__VA_ARGS__) + + +#define dbgprint(IOC, FMT, ...) \ + do { \ + if (unlikely(IOC->logging_level & SSSRAID_DEBUG)) \ + pr_info("%s: " FMT, (IOC)->name, ##__VA_ARGS__); \ + } while (0) + +#endif /* SSSRAID_DEBUG_H_INCLUDED */ diff --git a/drivers/scsi/sssraid/sssraid_fw.c b/drivers/scsi/sssraid/sssraid_fw.c new file mode 100644 index 000000000000..54287cf70558 --- /dev/null +++ b/drivers/scsi/sssraid/sssraid_fw.c @@ -0,0 +1,1724 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2022 3SNIC Information Technology, Ltd */ + +/* 3SNIC RAID SSSXXX Series Linux Driver */ + +#include <linux/version.h> +#include <linux/pci.h> +#include <linux/aer.h> +#include <linux/module.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/cdev.h> +#include <linux/sysfs.h> +#include <linux/gfp.h> +#include <linux/types.h> +#include <linux/ratelimit.h> +#include <linux/debugfs.h> +#include <linux/blkdev.h> +#include <linux/bsg-lib.h> +#include <linux/sort.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport.h> +#include <scsi/scsi_dbg.h> + +#include <linux/unaligned/be_byteshift.h> +#include <linux/unaligned/le_byteshift.h> +#include <linux/once.h> +#include <linux/sched/signal.h> +#include <linux/io-64-nonatomic-lo-hi.h> + +#include "sssraid.h" +#include "sssraid_debug.h" + +static int sssraid_wait_ready(struct sssraid_dev *hdev, u64 cap, bool enabled) +{ + unsigned long timeout = + ((SSSRAID_CAP_TIMEOUT(cap) + 1) * SSSRAID_CAP_TIMEOUT_UNIT_MS) + jiffies; + u32 bit = enabled ? SSSRAID_CSTS_RDY : 0; + + while ((readl(hdev->bar + SSSRAID_REG_CSTS) & SSSRAID_CSTS_RDY) != bit) { + usleep_range(1000, 2000); + if (fatal_signal_pending(current)) + return -EINTR; + + if (time_after(jiffies, timeout)) { + ioc_err(hdev, "Device not ready; aborting %s\n", + enabled ? "initialisation" : "reset"); + return -ENODEV; + } + } + return 0; +} + +static int sssraid_enable_ctrl(struct sssraid_dev *hdev) +{ + u64 cap = hdev->cap; + u32 dev_page_min = SSSRAID_CAP_MPSMIN(cap) + 12; + u32 page_shift = PAGE_SHIFT; + + if (page_shift < dev_page_min) { + ioc_err(hdev, "Minimum device page size[%u], too large for host[%u]\n", + 1U << dev_page_min, 1U << page_shift); + return -ENODEV; + } + + page_shift = min_t(unsigned int, SSSRAID_CAP_MPSMAX(cap) + 12, PAGE_SHIFT); + hdev->page_size = 1U << page_shift; + + hdev->ctrl_config = SSSRAID_CC_CSS_NVM; + hdev->ctrl_config |= (page_shift - 12) << SSSRAID_CC_MPS_SHIFT; + hdev->ctrl_config |= SSSRAID_CC_AMS_RR | SSSRAID_CC_SHN_NONE; + hdev->ctrl_config |= SSSRAID_CC_IOSQES | SSSRAID_CC_IOCQES; + hdev->ctrl_config |= SSSRAID_CC_ENABLE; + writel(hdev->ctrl_config, hdev->bar + SSSRAID_REG_CC); + + return sssraid_wait_ready(hdev, cap, true); +} + +static int sssraid_disable_ctrl(struct sssraid_dev *hdev) +{ + hdev->ctrl_config &= ~SSSRAID_CC_SHN_MASK; + hdev->ctrl_config &= ~SSSRAID_CC_ENABLE; + writel(hdev->ctrl_config, hdev->bar + SSSRAID_REG_CC); + + return sssraid_wait_ready(hdev, hdev->cap, false); +} + +static int sssraid_shutdown_ctrl(struct sssraid_dev *hdev) +{ + unsigned long timeout = le32_to_cpu(hdev->ctrl_info->rtd3e) / 1000000 * HZ + jiffies; + + hdev->ctrl_config &= ~SSSRAID_CC_SHN_MASK; + hdev->ctrl_config |= SSSRAID_CC_SHN_NORMAL; + writel(hdev->ctrl_config, hdev->bar + SSSRAID_REG_CC); + + while ((readl(hdev->bar + SSSRAID_REG_CSTS) & SSSRAID_CSTS_SHST_MASK) != + SSSRAID_CSTS_SHST_CMPLT) { + msleep(100); + if (fatal_signal_pending(current)) + return -EINTR; + if (time_after(jiffies, timeout)) { + ioc_err(hdev, "Device shutdown incomplete; abort shutdown\n"); + return -ENODEV; + } + } + return 0; +} + +static int sssraid_remap_bar(struct sssraid_dev *hdev, u32 size) +{ + struct pci_dev *pdev = hdev->pdev; + + if (size > pci_resource_len(pdev, 0)) { + ioc_err(hdev, "Input size[%u] exceed bar0 length[%llu]\n", + size, pci_resource_len(pdev, 0)); + return -ENODEV; + } + + if (hdev->bar) + iounmap(hdev->bar); + + hdev->bar = ioremap(pci_resource_start(pdev, 0), size); + if (!hdev->bar) { + ioc_err(hdev, "ioremap for bar0 failed\n"); + return -ENODEV; + } + hdev->dbs = hdev->bar + SSSRAID_REG_DBS; + + return 0; +} + +static int sssraid_create_dma_pools(struct sssraid_dev *hdev) +{ + int i; + char poolname[20] = { 0 }; + + hdev->prp_page_pool = dma_pool_create("prp list page", &hdev->pdev->dev, + PAGE_SIZE, PAGE_SIZE, 0); + + if (!hdev->prp_page_pool) { + ioc_err(hdev, "create prp_page_pool failed\n"); + return -ENOMEM; + } + + for (i = 0; i < small_pool_num; i++) { + sprintf(poolname, "prp_list_256_%d", i); + hdev->prp_small_pool[i] = dma_pool_create(poolname, &hdev->pdev->dev, + SMALL_POOL_SIZE, + SMALL_POOL_SIZE, 0); + + if (!hdev->prp_small_pool[i]) { + ioc_err(hdev, "create prp_small_pool %d failed\n", i); + goto destroy_prp_small_pool; + } + } + + return 0; + +destroy_prp_small_pool: + while (i > 0) + dma_pool_destroy(hdev->prp_small_pool[--i]); + dma_pool_destroy(hdev->prp_page_pool); + + return -ENOMEM; +} + +static void sssraid_destroy_dma_pools(struct sssraid_dev *hdev) +{ + int i; + + for (i = 0; i < small_pool_num; i++) + dma_pool_destroy(hdev->prp_small_pool[i]); + dma_pool_destroy(hdev->prp_page_pool); +} + +static int sssraid_alloc_resources(struct sssraid_dev *hdev) +{ + int retval, nqueue; + + hdev->ctrl_info = kzalloc_node(sizeof(*hdev->ctrl_info), GFP_KERNEL, hdev->numa_node); + if (!hdev->ctrl_info) + return -ENOMEM; + + retval = sssraid_create_dma_pools(hdev); + if (retval) + goto free_ctrl_info; + /* not num_online_cpus */ + nqueue = num_possible_cpus() + 1; + hdev->cqinfo = kcalloc_node(nqueue, sizeof(struct sssraid_cqueue), + GFP_KERNEL, hdev->numa_node); + if (!hdev->cqinfo) { + retval = -ENOMEM; + goto destroy_dma_pools; + } + + hdev->sqinfo = kcalloc_node(nqueue, sizeof(struct sssraid_squeue), + GFP_KERNEL, hdev->numa_node); + if (!hdev->sqinfo) { + retval = -ENOMEM; + goto free_cqueues; + } + + /* sssraid_alloc_admin_cmds moved to sssraid_init_ioc */ + + ioc_info(hdev, "queues num: %d\n", nqueue); + + return 0; + +free_cqueues: + kfree(hdev->cqinfo); +destroy_dma_pools: + sssraid_destroy_dma_pools(hdev); +free_ctrl_info: + kfree(hdev->ctrl_info); + + return retval; +} + +void sssraid_ioc_enable_intr(struct sssraid_dev *hdev) +{ + hdev->intr_enabled = 1; +} + +void sssraid_ioc_disable_intr(struct sssraid_dev *hdev) +{ + u16 i, max_vectors; + + hdev->intr_enabled = 0; + max_vectors = hdev->intr_info_count; + + for (i = 0; i < max_vectors; i++) + synchronize_irq(pci_irq_vector(hdev->pdev, i)); +} + +static int sssraid_setup_resources(struct sssraid_dev *hdev) +{ + struct pci_dev *pdev = hdev->pdev; + int retval = 0; + u64 maskbit = SSSRAID_DMA_MSK_BIT_MAX; + + if (pci_enable_device_mem(pdev)) { + ioc_err(hdev, "pci_enable_device_mem: failed\n"); + retval = -ENODEV; + goto out_failed; + } + + retval = pci_request_mem_regions(pdev, SSSRAID_DRIVER_NAME); + if (retval) { + ioc_err(hdev, "fail to request memory regions\n"); + retval = -ENODEV; + goto out_failed; + } + + /* get cap value at first, so keep + * sssraid_remap_bar(hdev, SSSRAID_REG_DBS + 4096) + * ioremap(pci_resource_start(..)) still in sssraid_remap_bar + */ + retval = sssraid_remap_bar(hdev, SSSRAID_REG_DBS + 4096); + if (retval) { + retval = -ENODEV; + goto out_failed; + } + + pci_set_master(pdev); + + if (readl(hdev->bar + SSSRAID_REG_CSTS) == U32_MAX) { + retval = -ENODEV; + ioc_err(hdev, "Read csts register failed\n"); + goto out_failed; + } + + hdev->cap = lo_hi_readq(hdev->bar + SSSRAID_REG_CAP); + hdev->ioq_depth = min_t(u32, SSSRAID_CAP_MQES(hdev->cap) + 1, io_queue_depth); + hdev->scsi_qd = hdev->ioq_depth - SSSRAID_PTCMDS_PERQ; + hdev->db_stride = 1 << SSSRAID_CAP_STRIDE(hdev->cap); + + maskbit = SSSRAID_CAP_DMAMASK(hdev->cap); + if (maskbit < 32 || maskbit > SSSRAID_DMA_MSK_BIT_MAX) { + ioc_err(hdev, "err, dma mask invalid[%llu], set to default\n", maskbit); + maskbit = SSSRAID_DMA_MSK_BIT_MAX; + } + + if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(maskbit))) { + if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) { + ioc_err(hdev, "set dma mask[32] and coherent failed\n"); + retval = -ENODEV; + goto out_failed; + } + ioc_info(hdev, "set dma mask[32] success\n"); + } else { + ioc_info(hdev, "set dma mask[%llu] success\n", maskbit); + } + + /* pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES) moved to setup_isr */ + + pci_set_drvdata(pdev, hdev->shost); + + pci_enable_pcie_error_reporting(pdev); + pci_save_state(pdev); + + sssraid_ioc_disable_intr(hdev); + + return retval; + +out_failed: + sssraid_cleanup_resources(hdev); + return retval; +} + +static int sssraid_alloc_admin_cmds(struct sssraid_dev *hdev) +{ + u16 i; + + INIT_LIST_HEAD(&hdev->adm_cmd_list); + spin_lock_init(&hdev->adm_cmd_lock); + + hdev->adm_cmds = kcalloc_node(SSSRAID_AQ_BLK_MQ_DEPTH, sizeof(struct sssraid_cmd), + GFP_KERNEL, hdev->numa_node); + + if (!hdev->adm_cmds) { + ioc_err(hdev, "Alloc admin cmds failed\n"); + return -ENOMEM; + } + + for (i = 0; i < SSSRAID_AQ_BLK_MQ_DEPTH; i++) { + hdev->adm_cmds[i].qid = 0; + hdev->adm_cmds[i].cid = i; + list_add_tail(&(hdev->adm_cmds[i].list), &hdev->adm_cmd_list); + } + + ioc_info(hdev, "Alloc admin cmds success, num[%d]\n", SSSRAID_AQ_BLK_MQ_DEPTH); + + return 0; +} + +static int sssraid_alloc_qpair(struct sssraid_dev *hdev, u16 qidx, u16 depth) +{ + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[qidx]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + int retval = 0; + + if (hdev->init_done_queue_cnt > qidx) { + ioc_info(hdev, "warn: queue[%d] is exist\n", qidx); + return 0; + } + + cqinfo->cqes = dma_alloc_coherent(&hdev->pdev->dev, CQ_SIZE(depth), + &cqinfo->cq_dma_addr, GFP_KERNEL | __GFP_ZERO); + if (!cqinfo->cqes) + return -ENOMEM; + + sqinfo->sq_cmds = dma_alloc_coherent(&hdev->pdev->dev, SQ_SIZE(qidx, depth), + &sqinfo->sq_dma_addr, GFP_KERNEL); + if (!sqinfo->sq_cmds) { + retval = -ENOMEM; + goto free_cqes; + } + + /* alloc sense buffer */ + sqinfo->sense = dma_alloc_coherent(&hdev->pdev->dev, SENSE_SIZE(depth), + &sqinfo->sense_dma_addr, GFP_KERNEL | __GFP_ZERO); + if (!sqinfo->sense) { + retval = -ENOMEM; + goto free_sq_cmds; + } + + spin_lock_init(&sqinfo->sq_lock); + spin_lock_init(&cqinfo->cq_lock); + cqinfo->hdev = hdev; + sqinfo->hdev = hdev; + sqinfo->q_depth = depth; + sqinfo->qidx = qidx; + /* cq_vector replaced by msix_index */ + + /* + * online_queues: completely initialized queue count: sssraid_init_queue + * queue_count: allocated but not completely initialized queue count: sssraid_alloc_queue + * online_queues/queue_count replaced by init_done_queue_cnt. + */ + hdev->init_done_queue_cnt++; + + return 0; + +free_sq_cmds: + dma_free_coherent(&hdev->pdev->dev, SQ_SIZE(qidx, depth), (void *)sqinfo->sq_cmds, + sqinfo->sq_dma_addr); +free_cqes: + dma_free_coherent(&hdev->pdev->dev, CQ_SIZE(depth), (void *)cqinfo->cqes, + cqinfo->cq_dma_addr); + return retval; +} + +static void sssraid_init_queue(struct sssraid_dev *hdev, u16 qidx) +{ + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[qidx]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + + memset((void *)cqinfo->cqes, 0, CQ_SIZE(sqinfo->q_depth)); + + sqinfo->sq_tail = 0; + cqinfo->cq_head = 0; + cqinfo->cq_phase = 1; + sqinfo->q_db = &hdev->dbs[qidx * 2 * hdev->db_stride]; + sqinfo->prp_small_pool = hdev->prp_small_pool[qidx % small_pool_num]; +} + +static int sssraid_setup_admin_qpair(struct sssraid_dev *hdev) +{ + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[0]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[0]; + u32 aqa; + int retval; + + ioc_info(hdev, "start disable ctrl\n"); + + retval = sssraid_disable_ctrl(hdev); + if (retval) + return retval; + + /* this func don't alloc admin queue */ + + aqa = sqinfo->q_depth - 1; + aqa |= aqa << 16; + writel(aqa, hdev->bar + SSSRAID_REG_AQA); + lo_hi_writeq(sqinfo->sq_dma_addr, hdev->bar + SSSRAID_REG_ASQ); + lo_hi_writeq(cqinfo->cq_dma_addr, hdev->bar + SSSRAID_REG_ACQ); + + ioc_info(hdev, "start enable ctrl\n"); + + retval = sssraid_enable_ctrl(hdev); + if (retval) { + retval = -ENODEV; + return retval; + } + + /* interrupt registry not here */ + /* cq_vector replaced by msix_index */ + + sssraid_init_queue(hdev, 0); + + ioc_info(hdev, "success, queuecount:[%d], pagesize[%d]\n", + hdev->init_done_queue_cnt, hdev->page_size); + + return 0; +} + +static void sssraid_cleanup_isr(struct sssraid_dev *hdev) +{ + u16 i; + + sssraid_ioc_disable_intr(hdev); + + if (!hdev->intr_info) + return; + + for (i = 0; i < hdev->intr_info_count; i++) + free_irq(pci_irq_vector(hdev->pdev, i), + (hdev->intr_info + i)); + + kfree(hdev->intr_info); + hdev->intr_info = NULL; + hdev->intr_info_count = 0; + pci_free_irq_vectors(hdev->pdev); +} + +static void sssraid_complete_adminq_cmnd(struct sssraid_dev *hdev, u16 qidx, + struct sssraid_completion *cqe) +{ + struct sssraid_cmd *adm_cmd; + + adm_cmd = hdev->adm_cmds + le16_to_cpu(cqe->cmd_id); + if (unlikely(adm_cmd->state == SSSRAID_CMD_IDLE)) { + ioc_warn(hdev, "Invalid id %d completed on queue %d\n", + le16_to_cpu(cqe->cmd_id), le16_to_cpu(cqe->sq_id)); + return; + } + + adm_cmd->status = le16_to_cpu(cqe->status) >> 1; + adm_cmd->result0 = le32_to_cpu(cqe->result); + adm_cmd->result1 = le32_to_cpu(cqe->result1); + + complete(&adm_cmd->cmd_done); +} + +static inline bool sssraid_cqe_pending(struct sssraid_cqueue *cqinfo) +{ + return (le16_to_cpu(cqinfo->cqes[cqinfo->cq_head].status) & 1) == + cqinfo->cq_phase; +} + +static inline void sssraid_update_cq_head(struct sssraid_dev *hdev, u16 qidx) +{ + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[qidx]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + + if (++cqinfo->cq_head == sqinfo->q_depth) { + cqinfo->cq_head = 0; + cqinfo->cq_phase = !cqinfo->cq_phase; + } +} + +static inline bool sssraid_process_cq(struct sssraid_dev *hdev, u16 qidx, u16 *start, + u16 *end, int tag) +{ + bool found = false; + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[qidx]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + + *start = cqinfo->cq_head; + while (!found && sssraid_cqe_pending(cqinfo)) { + if (le16_to_cpu(cqinfo->cqes[cqinfo->cq_head].cmd_id) == tag) + found = true; + sssraid_update_cq_head(hdev, qidx); + } + *end = cqinfo->cq_head; + + if (*start != *end) + writel(cqinfo->cq_head, sqinfo->q_db + sqinfo->hdev->db_stride); + + return found; +} + +static irqreturn_t sssraid_isr(int irq, void *privdata) +{ + struct sssraid_intr_info *intr_info = privdata; + struct sssraid_dev *hdev = intr_info->hdev; + irqreturn_t ret = IRQ_NONE; + struct sssraid_cqueue *cqinfo; + u16 midx, start, end; + + if (!intr_info) + return IRQ_NONE; + + if (!hdev->intr_enabled) + return IRQ_NONE; + + midx = intr_info->msix_index; + cqinfo = &hdev->cqinfo[midx]; + + spin_lock(&cqinfo->cq_lock); + if (cqinfo->cq_head != cqinfo->last_cq_head) + ret = IRQ_HANDLED; + + sssraid_process_cq(hdev, midx, &start, &end, -1); + cqinfo->last_cq_head = cqinfo->cq_head; + spin_unlock(&cqinfo->cq_lock); + + if (start != end) { + sssraid_complete_cqes(hdev, midx, start, end); + ret = IRQ_HANDLED; + } + return ret; +} + +irqreturn_t sssraid_isr_poll(int irq, void *privdata) +{ + return IRQ_NONE; +} + +bool sssraid_poll_cq(struct sssraid_dev *hdev, u16 qidx, int cid) +{ + u16 start, end; + bool found; + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[qidx]; + + if (!sssraid_cqe_pending(cqinfo)) + return 0; + + spin_lock_irq(&cqinfo->cq_lock); + found = sssraid_process_cq(hdev, qidx, &start, &end, cid); + spin_unlock_irq(&cqinfo->cq_lock); + + sssraid_complete_cqes(hdev, qidx, start, end); + return found; +} + +static inline int sssraid_request_irq(struct sssraid_dev *hdev, u16 index) +{ + struct pci_dev *pdev = hdev->pdev; + struct sssraid_intr_info *intr_info = hdev->intr_info + index; + int retval = 0; + + intr_info->hdev = hdev; + intr_info->msix_index = index; + intr_info->cqinfo = NULL; + + snprintf(intr_info->name, SSSRAID_NAME_LENGTH, "%s%d-msix%d", + SSSRAID_DRIVER_NAME, hdev->instance, index); + + retval = request_threaded_irq(pci_irq_vector(pdev, index), sssraid_isr, + sssraid_isr_poll, IRQF_SHARED, intr_info->name, intr_info); + + if (retval) { + ioc_err(hdev, "%s: Unable to allocate interrupt %d!\n", + intr_info->name, pci_irq_vector(pdev, index)); + return retval; + } + + return retval; +} + +static int sssraid_setup_isr(struct sssraid_dev *hdev, u8 setup_one) +{ + unsigned int irq_flags = PCI_IRQ_MSIX; + u16 max_vectors = 0, i; + int retval = 0; + + struct irq_affinity desc = { .pre_vectors = 1}; + + sssraid_cleanup_isr(hdev); + + if (setup_one) + max_vectors = 1; + else { + max_vectors = hdev->before_affinity_msix_cnt; + + ioc_info(hdev, "MSI-x vectors requested: %d\n", max_vectors); + } + + irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; + + i = pci_alloc_irq_vectors_affinity(hdev->pdev, + 1, max_vectors, irq_flags, &desc); + + if (i <= 0) { + ioc_err(hdev, "Cannot alloc irq vectors\n"); + goto out_failed; + } + if (i != max_vectors) { + ioc_info(hdev, + "allocated vectors (%d) are less than configured (%d)\n", + i, max_vectors); + + max_vectors = i; + } + + hdev->intr_info = kzalloc(sizeof(struct sssraid_intr_info) * max_vectors, + GFP_KERNEL); + if (!hdev->intr_info) { + retval = -1; + pci_free_irq_vectors(hdev->pdev); + goto out_failed; + } + + for (i = 0; i < max_vectors; i++) { + retval = sssraid_request_irq(hdev, i); + if (retval) { + hdev->intr_info_count = i; /* =i is for offload interrupt loop counter */ + goto out_failed; + } + } + + /* intr_info_count replace max_qid */ + hdev->intr_info_count = max_vectors; + sssraid_ioc_enable_intr(hdev); + return retval; +out_failed: + sssraid_cleanup_isr(hdev); + + return retval; +} + +static bool sssraid_adm_need_reset(struct sssraid_admin_command *cmd) +{ + switch (cmd->common.opcode) { + case SSSRAID_ADMIN_DELETE_SQ: + case SSSRAID_ADMIN_CREATE_SQ: + case SSSRAID_ADMIN_DELETE_CQ: + case SSSRAID_ADMIN_CREATE_CQ: + case SSSRAID_ADMIN_SET_FEATURES: + return false; + default: + return true; + } +} + +void sssraid_submit_cmd(struct sssraid_squeue *sqinfo, const void *cmd) +{ + u32 sqes = SQE_SIZE(sqinfo->qidx); + unsigned long flags; + struct sssraid_admin_common_command *acd = (struct sssraid_admin_common_command *)cmd; + + spin_lock_irqsave(&sqinfo->sq_lock, flags); + memcpy((sqinfo->sq_cmds + sqes * sqinfo->sq_tail), cmd, sqes); + if (++sqinfo->sq_tail == sqinfo->q_depth) + sqinfo->sq_tail = 0; + + writel(sqinfo->sq_tail, sqinfo->q_db); + spin_unlock_irqrestore(&sqinfo->sq_lock, flags); + + dbgprint(sqinfo->hdev, "cid[%d] qidx[%d], opcode[0x%x], flags[0x%x], hdid[%u]\n", + le16_to_cpu(acd->command_id), sqinfo->qidx, acd->opcode, acd->flags, + le32_to_cpu(acd->hdid)); +} + +int sssraid_submit_admin_sync_cmd(struct sssraid_dev *hdev, struct sssraid_admin_command *cmd, + u32 *result0, u32 *result1, u32 timeout) +{ + struct sssraid_cmd *adm_cmd = sssraid_get_cmd(hdev, SSSRAID_CMD_ADM); + + if (!adm_cmd) { + ioc_err(hdev, "err, get admin cmd failed\n"); + return -EFAULT; + } + + timeout = timeout ? timeout : ADMIN_TIMEOUT; + + /* + * watch dog not as optimized as + * init_completion/complete + */ + init_completion(&adm_cmd->cmd_done); + + cmd->common.command_id = cpu_to_le16(adm_cmd->cid); + sssraid_submit_cmd(&hdev->sqinfo[0], cmd); + + if (!wait_for_completion_timeout(&adm_cmd->cmd_done, timeout)) { + ioc_err(hdev, "cid[%d] qidx[%d] timeout, opcode[0x%x] subopcode[0x%x]\n", + adm_cmd->cid, adm_cmd->qid, cmd->usr_cmd.opcode, + cmd->usr_cmd.info_0.subopcode); + + /* reset controller if admin timeout */ + if (sssraid_adm_need_reset(cmd)) + sssraid_adm_timeout(hdev, adm_cmd); + + sssraid_put_cmd(hdev, adm_cmd, SSSRAID_CMD_ADM); + return -ETIME; + } + + if (result0) + *result0 = adm_cmd->result0; + if (result1) + *result1 = adm_cmd->result1; + + sssraid_put_cmd(hdev, adm_cmd, SSSRAID_CMD_ADM); + + return adm_cmd->status; +} + +static int sssraid_get_ctrl_info(struct sssraid_dev *hdev, struct sssraid_ctrl_info *ctrl_info) +{ + struct sssraid_admin_command admin_cmd; + u8 *data_ptr = NULL; + dma_addr_t data_dma = 0; + int retval; + + data_ptr = dma_alloc_coherent(&hdev->pdev->dev, PAGE_SIZE, &data_dma, GFP_KERNEL); + if (!data_ptr) + return -ENOMEM; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.get_info.opcode = SSSRAID_ADMIN_GET_INFO; + admin_cmd.get_info.type = SSSRAID_GET_INFO_CTRL; + admin_cmd.common.dptr.prp1 = cpu_to_le64(data_dma); + + retval = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); + if (!retval) + memcpy(ctrl_info, data_ptr, sizeof(struct sssraid_ctrl_info)); + + dma_free_coherent(&hdev->pdev->dev, PAGE_SIZE, data_ptr, data_dma); + + return retval; +} + +int sssraid_init_ctrl_info(struct sssraid_dev *hdev) +{ + int retval; + + hdev->ctrl_info->nd = cpu_to_le32(240); + hdev->ctrl_info->mdts = 8; + hdev->ctrl_info->max_cmds = cpu_to_le16(4096); + hdev->ctrl_info->max_num_sge = cpu_to_le16(128); + hdev->ctrl_info->max_channel = cpu_to_le16(4); + hdev->ctrl_info->max_tgt_id = cpu_to_le32(3239); + hdev->ctrl_info->max_lun = cpu_to_le16(2); + + retval = sssraid_get_ctrl_info(hdev, hdev->ctrl_info); + if (retval) + ioc_err(hdev, "init controller info failed: %d\n", retval); + + ioc_info(hdev, "nd = %d\n", le32_to_cpu(hdev->ctrl_info->nd)); + ioc_info(hdev, "max_cmd = %d\n", le16_to_cpu(hdev->ctrl_info->max_cmds)); + ioc_info(hdev, "max_channel = %d\n", le16_to_cpu(hdev->ctrl_info->max_channel)); + ioc_info(hdev, "max_tgt_id = %d\n", le32_to_cpu(hdev->ctrl_info->max_tgt_id)); + ioc_info(hdev, "max_lun = %d\n", le16_to_cpu(hdev->ctrl_info->max_lun)); + ioc_info(hdev, "max_num_sge = %d\n", le16_to_cpu(hdev->ctrl_info->max_num_sge)); + ioc_info(hdev, "lun_num_boot = %d\n", le16_to_cpu(hdev->ctrl_info->lun_num_in_boot)); + ioc_info(hdev, "mdts = %d\n", hdev->ctrl_info->mdts); + ioc_info(hdev, "acl = %d\n", hdev->ctrl_info->acl); + ioc_info(hdev, "aer1 = %d\n", hdev->ctrl_info->aerl); + ioc_info(hdev, "card_type = %d\n", hdev->ctrl_info->card_type); + ioc_info(hdev, "rtd3e = %d\n", le32_to_cpu(hdev->ctrl_info->rtd3e)); + ioc_info(hdev, "sn = %s\n", hdev->ctrl_info->sn); + ioc_info(hdev, "fr = %s\n", hdev->ctrl_info->fr); + + if (!hdev->ctrl_info->aerl) + hdev->ctrl_info->aerl = 1; + if (hdev->ctrl_info->aerl > SSSRAID_NR_AEN_COMMANDS) + hdev->ctrl_info->aerl = SSSRAID_NR_AEN_COMMANDS; + + return 0; +} + +static int sssraid_set_features(struct sssraid_dev *hdev, u32 fid, u32 dword11, void *buffer, + size_t buflen, u32 *result) +{ + struct sssraid_admin_command admin_cmd; + int ret; + u8 *data_ptr = NULL; + dma_addr_t data_dma = 0; + + if (buffer && buflen) { + data_ptr = dma_alloc_coherent(&hdev->pdev->dev, buflen, &data_dma, GFP_KERNEL); + if (!data_ptr) + return -ENOMEM; + + memcpy(data_ptr, buffer, buflen); + } + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.features.opcode = SSSRAID_ADMIN_SET_FEATURES; + admin_cmd.features.fid = cpu_to_le32(fid); + admin_cmd.features.dword11 = cpu_to_le32(dword11); + admin_cmd.common.dptr.prp1 = cpu_to_le64(data_dma); + + ret = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, result, NULL, 0); + + if (data_ptr) + dma_free_coherent(&hdev->pdev->dev, buflen, data_ptr, data_dma); + + return ret; +} + +static int sssraid_set_queue_cnt(struct sssraid_dev *hdev, u32 *cnt) +{ + u32 q_cnt = (*cnt - 1) | ((*cnt - 1) << 16); + u32 nr_ioqs, result; + int status; + + status = sssraid_set_features(hdev, SSSRAID_FEAT_NUM_QUEUES, q_cnt, NULL, 0, &result); + if (status) { + ioc_err(hdev, "Set queue count failed, status: %d\n", + status); + return -EIO; + } + + nr_ioqs = min(result & 0xffff, result >> 16) + 1; + *cnt = min(*cnt, nr_ioqs); + if (*cnt == 0) { + ioc_err(hdev, "Illegal queue count: zero\n"); + return -EIO; + } + return 0; +} + +static int sssraid_create_cq(struct sssraid_dev *hdev, u16 qidx) +{ + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[qidx]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + struct sssraid_admin_command admin_cmd; + int flags = SSSRAID_QUEUE_PHYS_CONTIG | SSSRAID_CQ_IRQ_ENABLED; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.create_cq.opcode = SSSRAID_ADMIN_CREATE_CQ; + admin_cmd.create_cq.prp1 = cpu_to_le64(cqinfo->cq_dma_addr); + admin_cmd.create_cq.cqid = cpu_to_le16(qidx); + admin_cmd.create_cq.qsize = cpu_to_le16(sqinfo->q_depth - 1); + admin_cmd.create_cq.cq_flags = cpu_to_le16(flags); + admin_cmd.create_cq.irq_vector = cpu_to_le16(qidx); + + return sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); +} + +static int sssraid_create_io_cq(struct sssraid_dev *hdev, u16 qidx) +{ + int retval; + struct sssraid_cqueue *cqinfo = hdev->cqinfo + qidx; + u16 midx = qidx; + + retval = sssraid_create_cq(hdev, qidx); + if (retval) + return retval; + + /* + * cqinfo initialization at sssraid_init_queue + */ + hdev->intr_info[midx].cqinfo = cqinfo; + + return retval; +} + +static int sssraid_create_sq(struct sssraid_dev *hdev, u16 qidx) +{ + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + struct sssraid_admin_command admin_cmd; + int flags = SSSRAID_QUEUE_PHYS_CONTIG; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.create_sq.opcode = SSSRAID_ADMIN_CREATE_SQ; + admin_cmd.create_sq.prp1 = cpu_to_le64(sqinfo->sq_dma_addr); + admin_cmd.create_sq.sqid = cpu_to_le16(qidx); + admin_cmd.create_sq.qsize = cpu_to_le16(sqinfo->q_depth - 1); + admin_cmd.create_sq.sq_flags = cpu_to_le16(flags); + admin_cmd.create_sq.cqid = cpu_to_le16(qidx); + + return sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); +} + +static int sssraid_create_io_sq(struct sssraid_dev *hdev, u16 qidx) +{ + return sssraid_create_sq(hdev, qidx); +} + +int sssraid_get_dev_list(struct sssraid_dev *hdev, struct sssraid_dev_info *devices) +{ + u32 nd = le32_to_cpu(hdev->ctrl_info->nd); + struct sssraid_admin_command admin_cmd; + struct sssraid_dev_list *list_buf; + dma_addr_t data_dma = 0; + u32 i, idx, hdid, ndev; + int ret = 0; + + list_buf = dma_alloc_coherent(&hdev->pdev->dev, PAGE_SIZE, &data_dma, GFP_KERNEL); + if (!list_buf) + return -ENOMEM; + + for (idx = 0; idx < nd;) { + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.get_info.opcode = SSSRAID_ADMIN_GET_INFO; + admin_cmd.get_info.type = SSSRAID_GET_INFO_DEV_LIST; + admin_cmd.get_info.cdw11 = cpu_to_le32(idx); + admin_cmd.common.dptr.prp1 = cpu_to_le64(data_dma); + + ret = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); + + if (ret) { + ioc_err(hdev, "Get device list failed, nd: %u, idx: %u, ret: %d\n", + nd, idx, ret); + goto out; + } + ndev = le32_to_cpu(list_buf->dev_num); + + ioc_info(hdev, "ndev numbers: %u\n", ndev); + + for (i = 0; i < ndev; i++) { + hdid = le32_to_cpu(list_buf->devices[i].hdid); + ioc_info(hdev, "list_buf->devices[%d], hdid: %u target: %d, channel: %d, lun: %d, attr[0x%x]\n", + i, hdid, le16_to_cpu(list_buf->devices[i].target), + list_buf->devices[i].channel, + list_buf->devices[i].lun, + list_buf->devices[i].attr); + if (hdid > nd || hdid == 0) { + ioc_err(hdev, "err, hdid[%d] invalid\n", hdid); + continue; + } + memcpy(&devices[hdid - 1], &list_buf->devices[i], + sizeof(struct sssraid_dev_info)); + } + idx += ndev; + + if (ndev < MAX_DEV_ENTRY_PER_PAGE_4K) + break; + } + +out: + dma_free_coherent(&hdev->pdev->dev, PAGE_SIZE, list_buf, data_dma); + return ret; +} + +/* send abort command by admin queue temporary */ +int sssraid_send_abort_cmd(struct sssraid_dev *hdev, u32 hdid, u16 qidx, u16 cid) +{ + struct sssraid_admin_command admin_cmd; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.abort.opcode = SSSRAID_ADMIN_ABORT_CMD; + admin_cmd.abort.hdid = cpu_to_le32(hdid); + admin_cmd.abort.sqid = cpu_to_le16(qidx); + admin_cmd.abort.cid = cpu_to_le16(cid); + + return sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); +} + +/* send reset command by admin quueue temporary */ +int sssraid_send_reset_cmd(struct sssraid_dev *hdev, u8 type, u32 hdid) +{ + struct sssraid_admin_command admin_cmd; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.reset.opcode = SSSRAID_ADMIN_RESET; + admin_cmd.reset.hdid = cpu_to_le32(hdid); + admin_cmd.reset.type = type; + + return sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); +} + +static int sssraid_delete_queue(struct sssraid_dev *hdev, u8 op, u16 qidx) +{ + struct sssraid_admin_command admin_cmd; + int retval; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.delete_queue.opcode = op; + admin_cmd.delete_queue.qid = cpu_to_le16(qidx); + + retval = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); + + if (retval) + ioc_err(hdev, "Delete %s:[%d] failed\n", + (op == SSSRAID_ADMIN_DELETE_CQ) ? "cq" : "sq", qidx); + + return retval; +} + +static int sssraid_delete_cq(struct sssraid_dev *hdev, u16 qidx) +{ + return sssraid_delete_queue(hdev, SSSRAID_ADMIN_DELETE_CQ, qidx); +} + +void sssraid_adm_timeout(struct sssraid_dev *hdev, struct sssraid_cmd *cmd) +{ + /* command may be returned because controller reset */ + if (READ_ONCE(cmd->state) == SSSRAID_CMD_COMPLETE) + return; + + if (!sssraid_change_host_state(hdev, SSSRAID_RESETTING)) { + ioc_info(hdev, "can't change to reset state\n"); + return; + } + sssraid_soft_reset_handler(hdev); +} + +static int sssraid_create_io_qpair(struct sssraid_dev *hdev, u16 qidx) +{ + int retval; + + retval = sssraid_create_io_cq(hdev, qidx); + if (retval) + return retval; + + retval = sssraid_create_io_sq(hdev, qidx); + if (retval) + goto delete_cq; + + /* intr_info.msix_index substitute cq_vector */ + + /* io interrupt registry: + * not here, put above + */ + + sssraid_init_queue(hdev, qidx); + + return 0; + +delete_cq: + sssraid_delete_cq(hdev, qidx); + + return retval; +} + +static int sssraid_setup_io_qpair(struct sssraid_dev *hdev) +{ + u32 i, num_queues; + int retval = 0; + + num_queues = min(hdev->intr_info_count, hdev->init_done_queue_cnt - 1); + for (i = 1; i <= num_queues; i++) { + retval = sssraid_create_io_qpair(hdev, i); + if (retval) { + ioc_err(hdev, "Create queue[%d] failed\n", i); + break; + } + } + + ioc_info(hdev, "init_done_queue_cnt[%d], intr_info_count[%d] num_queues[%d]", + hdev->init_done_queue_cnt, /*hdev->online_queues,*/ + hdev->intr_info_count, num_queues); + + return retval >= 0 ? 0 : retval; +} + +static int sssraid_alloc_ioq_ptcmds(struct sssraid_dev *hdev) +{ + int i; + int ptnum = SSSRAID_NR_IOQ_PTCMDS; + + INIT_LIST_HEAD(&hdev->ioq_pt_list); + spin_lock_init(&hdev->ioq_pt_lock); + + hdev->ioq_ptcmds = kcalloc_node(ptnum, sizeof(struct sssraid_cmd), + GFP_KERNEL, hdev->numa_node); + + if (!hdev->ioq_ptcmds) { + ioc_err(hdev, "Alloc ioq_ptcmds failed\n"); + return -ENOMEM; + } + + for (i = 0; i < ptnum; i++) { + hdev->ioq_ptcmds[i].qid = i / SSSRAID_PTCMDS_PERQ + 1; + hdev->ioq_ptcmds[i].cid = i % SSSRAID_PTCMDS_PERQ + SSSRAID_IO_BLK_MQ_DEPTH; + list_add_tail(&(hdev->ioq_ptcmds[i].list), &hdev->ioq_pt_list); + } + + ioc_info(hdev, "Alloc ioq_ptcmds success, ptnum[%d]\n", ptnum); + + return 0; +} + +int sssraid_send_event_ack(struct sssraid_dev *hdev, u8 event, + u32 event_ctx, u16 cid) +{ + /* event,event_ctx no use at this time */ + struct sssraid_squeue *sqinfo = &hdev->sqinfo[0]; + struct sssraid_admin_command admin_cmd; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.common.opcode = SSSRAID_ADMIN_ASYNC_EVENT; + admin_cmd.common.command_id = cpu_to_le16(cid); + + sssraid_submit_cmd(sqinfo, &admin_cmd); + ioc_info(hdev, "send aen, cid[%d]\n", cid); + + return 0; +} + +static void sssraid_handle_aen_notice(struct sssraid_dev *hdev, u32 result) +{ + switch ((result & 0xff00) >> 8) { + case SSSRAID_AEN_DEV_CHANGED: + sssraid_scan_disk(hdev); + break; + case SSSRAID_AEN_FW_ACT_START: + ioc_info(hdev, "fw activation starting\n"); + break; + case SSSRAID_AEN_HOST_PROBING: + break; + default: + ioc_warn(hdev, "async event result %08x\n", result); + } +} + +static void sssraid_handle_aen_vs(struct sssraid_dev *hdev, u32 result, u32 result1) +{ + switch ((result & 0xff00) >> 8) { + case SSSRAID_AEN_TIMESYN: + sssraid_configure_timestamp(hdev); + break; + case SSSRAID_AEN_FW_ACT_FINISH: + ioc_info(hdev, "fw activation finish\n"); + if (sssraid_init_ctrl_info(hdev)) + ioc_err(hdev, "get ctrl info failed after fw act\n"); + break; + case SSSRAID_AEN_EVENT_MIN ... SSSRAID_AEN_EVENT_MAX: + ioc_info(hdev, "rcv card event[%d], param1[0x%x] param2[0x%x]\n", + (result & 0xff00) >> 8, result, result1); + break; + default: + ioc_warn(hdev, "async event result: 0x%x\n", result); + } +} + +static inline void sssraid_send_all_aen(struct sssraid_dev *hdev) +{ + u16 i; + + for (i = 0; i < hdev->ctrl_info->aerl; i++) + sssraid_send_event_ack(hdev, 0, 0, i + SSSRAID_AQ_BLK_MQ_DEPTH); +} + +static int sssraid_dev_list_init(struct sssraid_dev *hdev) +{ + u32 nd = le32_to_cpu(hdev->ctrl_info->nd); + + hdev->devices = kzalloc_node(nd * sizeof(struct sssraid_dev_info), + GFP_KERNEL, hdev->numa_node); + if (!hdev->devices) + return -ENOMEM; + + return 0; +} + +int sssraid_configure_timestamp(struct sssraid_dev *hdev) +{ + __le64 ts; + int retval; + + ts = cpu_to_le64(ktime_to_ms(ktime_get_real())); + retval = sssraid_set_features(hdev, SSSRAID_FEAT_TIMESTAMP, 0, &ts, sizeof(ts), NULL); + + if (retval) + ioc_err(hdev, "set timestamp failed: %d\n", retval); + return retval; +} + +int sssraid_init_ioc(struct sssraid_dev *hdev, u8 re_init) +{ + int retval = 0; + int i; + u32 nr_ioqs, bar_size; + + if (!re_init) { + hdev->cpu_count = num_online_cpus(); + + retval = sssraid_alloc_resources(hdev); + if (retval) { + ioc_err(hdev, "Failed to alloc resources:error %d\n", + retval); + goto out_nocleanup; + } + } + + /* reset need re-setup */ + retval = sssraid_setup_resources(hdev); + if (retval) { + ioc_err(hdev, "Failed to setup resources:error %d\n", + retval); + goto out_failed; + } + + if (!re_init) { + retval = sssraid_alloc_admin_cmds(hdev); + if (retval) { + ioc_err(hdev, "Failed to alloc admin cmds:error %d\n", + retval); + goto out_failed; + } + /* put here: + * alloc admin queue + */ + retval = sssraid_alloc_qpair(hdev, 0, SSSRAID_AQ_DEPTH); + if (retval) { + ioc_err(hdev, "Failed to alloc admin queue:error %d\n", + retval); + goto out_failed; + } + } + + retval = sssraid_setup_admin_qpair(hdev); + if (retval) { + ioc_err(hdev, "Failed to setup admin queue:error %d\n", + retval); + goto out_failed; + } + + /* 1. unregister all interrupt + * 2. admin interrupt registry + */ + retval = sssraid_setup_isr(hdev, 1); + if (retval) { + ioc_err(hdev, "Failed to setup ISR error %d\n", + retval); + goto out_failed; + } + + retval = sssraid_init_ctrl_info(hdev); + if (retval) { + ioc_err(hdev, "Failed to get ctrl info error %d\n", + retval); + goto out_failed; + } + + nr_ioqs = hdev->cpu_count; + retval = sssraid_set_queue_cnt(hdev, &nr_ioqs); + if (retval) { + ioc_err(hdev, "Failed to set queue cnt error %d\n", + retval); + goto out_failed; + } + + hdev->before_affinity_msix_cnt = nr_ioqs + 1; + + /* 1. unregister all interrupt + * 2. admin interrupt re-registry + * 3. io interrupt registry + */ + retval = sssraid_setup_isr(hdev, 0); + if (retval) { + ioc_err(hdev, "Failed to re-setup ISR, error %d\n", + retval); + goto out_failed; + } + + /* remap */ + bar_size = SSSRAID_REG_DBS + ((nr_ioqs + 1) * 8 * hdev->db_stride); + retval = sssraid_remap_bar(hdev, bar_size); + if (retval) { + ioc_err(hdev, "Failed to re-map bar, error %d\n", + retval); + goto out_failed; + } + hdev->sqinfo[0].q_db = hdev->dbs; + + /* num_vecs no sense, abandon */ + + if (!re_init) { + for (i = hdev->init_done_queue_cnt; i <= hdev->intr_info_count; i++) { + retval = sssraid_alloc_qpair(hdev, i, hdev->ioq_depth); + if (retval) { + ioc_err(hdev, "Failed to alloc io queue:error %d\n", + retval); + goto out_failed; + } + } + ioc_info(hdev, "intr_info_count: %d, init_done_queue_cnt: %d, ioq_depth: %d\n", + hdev->intr_info_count, hdev->init_done_queue_cnt, hdev->ioq_depth); + } + + retval = sssraid_setup_io_qpair(hdev); + if (retval) { + ioc_err(hdev, "Failed to setup io qpair, error %d\n", + retval); + goto out_failed; + } + + if (!re_init) { + retval = sssraid_alloc_ioq_ptcmds(hdev); + if (retval) { + ioc_err(hdev, "Failed to alloc ioq ptcmds, error %d\n", + retval); + goto out_failed; + } + } + + sssraid_send_all_aen(hdev); + + if (!re_init) { + retval = sssraid_dev_list_init(hdev); + if (retval) { + ioc_err(hdev, "Failed to init device list, error %d\n", + retval); + goto out_failed; + } + + retval = sssraid_configure_timestamp(hdev); + if (retval) { + ioc_err(hdev, "Failed to configure timestamp, error %d\n", + retval); + goto out_failed; + } + } + + return retval; + +out_failed: + sssraid_cleanup_ioc(hdev, re_init); +out_nocleanup: + return retval; +} + +void sssraid_cleanup_resources(struct sssraid_dev *hdev) +{ + struct pci_dev *pdev = hdev->pdev; + + sssraid_cleanup_isr(hdev); + + if (hdev->bar) { + iounmap(hdev->bar); + hdev->bar = NULL; + } + + if (pci_is_enabled(pdev)) { + pci_disable_pcie_error_reporting(pdev); + pci_release_mem_regions(pdev); + pci_disable_device(pdev); + } +} + +static void sssraid_free_ioq_ptcmds(struct sssraid_dev *hdev) +{ + kfree(hdev->ioq_ptcmds); + hdev->ioq_ptcmds = NULL; + + INIT_LIST_HEAD(&hdev->ioq_pt_list); +} + +static void sssraid_delete_io_queues(struct sssraid_dev *hdev) +{ + u16 queues = hdev->init_done_queue_cnt - 1; + u8 opcode = SSSRAID_ADMIN_DELETE_SQ; + u16 i, pass; + + if (!pci_device_is_present(hdev->pdev)) { + ioc_err(hdev, "pci_device is not present, skip disable io queues\n"); + return; + } + + if (hdev->init_done_queue_cnt < 2) { + ioc_err(hdev, "err, io queue has been delete\n"); + return; + } + + for (pass = 0; pass < 2; pass++) { + for (i = queues; i > 0; i--) + if (sssraid_delete_queue(hdev, opcode, i)) + break; + + opcode = SSSRAID_ADMIN_DELETE_CQ; + } +} + +void sssraid_complete_aen(struct sssraid_dev *hdev, struct sssraid_completion *cqe) +{ + u32 result = le32_to_cpu(cqe->result); + + ioc_info(hdev, "rcv aen, cid[%d], status[0x%x], result[0x%x]\n", + le16_to_cpu(cqe->cmd_id), le16_to_cpu(cqe->status) >> 1, result); + + /* + * The response to event moved from this func. + * sssraid_send_aen changed to name sssraid_send_event_ack + */ + + if ((le16_to_cpu(cqe->status) >> 1) != SSSRAID_SC_SUCCESS) + return; + switch (result & 0x7) { + case SSSRAID_AEN_NOTICE: + sssraid_handle_aen_notice(hdev, result); + break; + case SSSRAID_AEN_VS: + sssraid_handle_aen_vs(hdev, result, le32_to_cpu(cqe->result1)); + break; + default: + ioc_warn(hdev, "Unsupported async event type: %u\n", + result & 0x7); + break; + } +} + +void sssraid_free_iod_res(struct sssraid_dev *hdev, struct sssraid_iod *iod) +{ + const int last_prp = hdev->page_size / sizeof(__le64) - 1; + dma_addr_t dma_addr, next_dma_addr; + struct sssraid_sgl_desc *sg_list; + __le64 *prp_list; + void *addr; + int i; + + dma_addr = iod->first_dma; + if (iod->npages == 0) + dma_pool_free(iod->sqinfo->prp_small_pool, sssraid_iod_list(iod)[0], dma_addr); + + for (i = 0; i < iod->npages; i++) { + addr = sssraid_iod_list(iod)[i]; + + if (iod->use_sgl) { + sg_list = addr; + next_dma_addr = + le64_to_cpu((sg_list[SGES_PER_PAGE - 1]).addr); + } else { + prp_list = addr; + next_dma_addr = le64_to_cpu(prp_list[last_prp]); + } + + dma_pool_free(hdev->prp_page_pool, addr, dma_addr); + dma_addr = next_dma_addr; + } + + iod->sense = NULL; + iod->npages = -1; +} + +static void sssraid_complete_ioq_sync_cmnd(struct sssraid_dev *hdev, u16 qidx, + struct sssraid_completion *cqe) +{ + struct sssraid_cmd *ptcmd; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + + ptcmd = hdev->ioq_ptcmds + (sqinfo->qidx - 1) * SSSRAID_PTCMDS_PERQ + + le16_to_cpu(cqe->cmd_id) - SSSRAID_IO_BLK_MQ_DEPTH; + + ptcmd->status = le16_to_cpu(cqe->status) >> 1; + ptcmd->result0 = le32_to_cpu(cqe->result); + ptcmd->result1 = le32_to_cpu(cqe->result1); + + complete(&ptcmd->cmd_done); +} + +static void sssraid_complete_ioq_cmnd(struct sssraid_dev *hdev, u16 qidx, + struct sssraid_completion *cqe) +{ + struct sssraid_squeue *sqinfo = &hdev->sqinfo[qidx]; + + struct blk_mq_tags *tags; + struct scsi_cmnd *scmd; + struct sssraid_iod *iod; + struct request *req; + unsigned long elapsed; + + tags = hdev->shost->tag_set.tags[sqinfo->qidx - 1]; + + req = blk_mq_tag_to_rq(tags, le16_to_cpu(cqe->cmd_id)); + if (unlikely(!req || !blk_mq_request_started(req))) { + ioc_warn(hdev, "Invalid id %d completed on queue %d\n", + le16_to_cpu(cqe->cmd_id), sqinfo->qidx); + return; + } + + scmd = blk_mq_rq_to_pdu(req); + iod = scsi_cmd_priv(scmd); + + elapsed = jiffies - scmd->jiffies_at_alloc; + dbgprint(hdev, "cid[%d] qidx[%d] finish IO cost %3ld.%3ld seconds\n", + le16_to_cpu(cqe->cmd_id), sqinfo->qidx, elapsed / HZ, elapsed % HZ); + + if (cmpxchg(&iod->state, SSSRAID_CMD_IN_FLIGHT, SSSRAID_CMD_COMPLETE) != + SSSRAID_CMD_IN_FLIGHT) { + ioc_warn(hdev, "cid[%d] qidx[%d] enters abnormal handler, cost %3ld.%3ld seconds\n", + le16_to_cpu(cqe->cmd_id), sqinfo->qidx, elapsed / HZ, elapsed % HZ); + WRITE_ONCE(iod->state, SSSRAID_CMD_TMO_COMPLETE); + + if (iod->nsge) { + iod->nsge = 0; + scsi_dma_unmap(scmd); + } + sssraid_free_iod_res(hdev, iod); + + return; + } + + sssraid_map_status(iod, scmd, cqe); + if (iod->nsge) { + iod->nsge = 0; + scsi_dma_unmap(scmd); + } + sssraid_free_iod_res(hdev, iod); + scmd->scsi_done(scmd); +} + +static void sssraid_process_admin_cq(struct sssraid_dev *hdev, + struct sssraid_squeue *sqinfo, + struct sssraid_completion *cqe) +{ + struct sssraid_fwevt *fwevt = NULL; + u16 cid = le16_to_cpu(cqe->cmd_id), sz; + + if (likely(cid < SSSRAID_AQ_BLK_MQ_DEPTH)) + sssraid_complete_adminq_cmnd(hdev, sqinfo->qidx, cqe); + else { + sz = sizeof(*cqe); + fwevt = sssraid_alloc_fwevt(sz); + if (!fwevt) { + ioc_info(hdev, "%s :failure at %s:%d/%s()!\n", + __func__, __FILE__, __LINE__, __func__); + return; + } + + memcpy(fwevt->event_data, cqe, sz); + fwevt->hdev = hdev; + fwevt->event_id = 0; /* evt_type:0 */ + fwevt->send_ack = 1; /* ack_req:1 */ + fwevt->process_evt = 1; /* process_evt_bh:1 */ + fwevt->evt_ctx = 0; /* 0 */ + sssraid_fwevt_add_to_list(hdev, fwevt); + } +} + +static void sssraid_process_io_cq(struct sssraid_dev *hdev, + struct sssraid_squeue *sqinfo, + struct sssraid_completion *cqe) +{ + u16 cid = le16_to_cpu(cqe->cmd_id); + + if (likely(cid < SSSRAID_IO_BLK_MQ_DEPTH)) + sssraid_complete_ioq_cmnd(hdev, sqinfo->qidx, cqe); + else /* io sync handle */ + sssraid_complete_ioq_sync_cmnd(hdev, sqinfo->qidx, cqe); +} + +static inline void sssraid_handle_cqe(struct sssraid_dev *hdev, u16 mdix, u16 didx) +{ + struct sssraid_cqueue *cqinfo = &hdev->cqinfo[mdix]; + struct sssraid_squeue *sqinfo = &hdev->sqinfo[mdix]; + + struct sssraid_completion *cqe = &cqinfo->cqes[didx]; + u16 cid = le16_to_cpu(cqe->cmd_id); + + if (unlikely(cid >= sqinfo->q_depth)) { + ioc_err(hdev, "Invalid command id[%d] completed on queue %d\n", + cid, cqe->sq_id); + return; + } + + dbgprint(hdev, "cid[%d] mdix[%d], result[0x%x], sq_id[%d], status[0x%x]\n", + cid, sqinfo->qidx, le32_to_cpu(cqe->result), + le16_to_cpu(cqe->sq_id), le16_to_cpu(cqe->status)); + + if (!mdix) /* admin */ + sssraid_process_admin_cq(hdev, sqinfo, cqe); + else /* io */ + sssraid_process_io_cq(hdev, sqinfo, cqe); +} + +void sssraid_complete_cqes(struct sssraid_dev *hdev, u16 midx, u16 start, u16 end) +{ + struct sssraid_squeue *sqinfo = &hdev->sqinfo[midx]; + + while (start != end) { + sssraid_handle_cqe(hdev, midx, start); + if (++start == sqinfo->q_depth) + start = 0; + } +} + +static void sssraid_disable_admin_queue(struct sssraid_dev *hdev, bool shutdown) +{ + struct sssraid_cqueue *adm_cqinfo = &hdev->cqinfo[0]; + u16 start, end; + + if (pci_device_is_present(hdev->pdev)) { + if (shutdown) + sssraid_shutdown_ctrl(hdev); + else + sssraid_disable_ctrl(hdev); + } + + if (hdev->init_done_queue_cnt == 0) { + ioc_err(hdev, "err, admin queue has been delete\n"); + return; + } + + spin_lock_irq(&adm_cqinfo->cq_lock); + sssraid_process_cq(hdev, 0, &start, &end, -1); + spin_unlock_irq(&adm_cqinfo->cq_lock); + sssraid_complete_cqes(hdev, 0, start, end); +} + +static void sssraid_free_all_queues(struct sssraid_dev *hdev) +{ + int i; + struct sssraid_cqueue *cqinfo; + struct sssraid_squeue *sqinfo; + + for (i = 0; i < hdev->init_done_queue_cnt; i++) { + cqinfo = &hdev->cqinfo[i]; + sqinfo = &hdev->sqinfo[i]; + dma_free_coherent(&hdev->pdev->dev, CQ_SIZE(sqinfo->q_depth), + (void *)cqinfo->cqes, cqinfo->cq_dma_addr); + dma_free_coherent(&hdev->pdev->dev, SQ_SIZE(sqinfo->qidx, sqinfo->q_depth), + sqinfo->sq_cmds, sqinfo->sq_dma_addr); + dma_free_coherent(&hdev->pdev->dev, SENSE_SIZE(sqinfo->q_depth), + sqinfo->sense, sqinfo->sense_dma_addr); + } + + hdev->init_done_queue_cnt = 0; +} + +static void sssraid_free_admin_cmds(struct sssraid_dev *hdev) +{ + kfree(hdev->adm_cmds); + hdev->adm_cmds = NULL; + INIT_LIST_HEAD(&hdev->adm_cmd_list); +} + +static void sssraid_free_resources(struct sssraid_dev *hdev) +{ + sssraid_free_admin_cmds(hdev); + kfree(hdev->sqinfo); + kfree(hdev->cqinfo); + sssraid_destroy_dma_pools(hdev); + kfree(hdev->ctrl_info); +} + +void sssraid_cleanup_ioc(struct sssraid_dev *hdev, u8 re_init) +{ + if (!re_init) + sssraid_free_ioq_ptcmds(hdev); + + sssraid_delete_io_queues(hdev); + sssraid_disable_admin_queue(hdev, !re_init); + + if (!re_init) + sssraid_free_all_queues(hdev); + + sssraid_ioc_disable_intr(hdev); + sssraid_cleanup_resources(hdev); + + if (!re_init) + sssraid_free_resources(hdev); + +} + +int sssraid_soft_reset_handler(struct sssraid_dev *hdev) +{ + int retval = 0; + + if (hdev->state != SSSRAID_RESETTING) { + ioc_err(hdev, "err, host is not reset state\n"); + return retval; + } + + ioc_info(hdev, "enter host reset\n"); + + sssraid_ioc_disable_intr(hdev); + sssraid_cleanup_fwevt_list(hdev); + + /* realize above here: + * sssraid_dev_disable -> sssraid_back_all_io + */ + sssraid_back_all_io(hdev); + /* + * realize sssraid_dev_disable, + * i.e. sssraid_cleanup_ioc(1) + */ + if (hdev->ctrl_config & SSSRAID_CC_ENABLE) { + ioc_info(hdev, "start dev_disable\n"); + sssraid_cleanup_ioc(hdev, 1); + } + + retval = sssraid_init_ioc(hdev, 1); + if (retval) { + ioc_err(hdev, "init ioc fail.\n"); + return retval; + } + + sssraid_change_host_state(hdev, SSSRAID_LIVE); + + return retval; +} diff --git a/drivers/scsi/sssraid/sssraid_os.c b/drivers/scsi/sssraid/sssraid_os.c new file mode 100644 index 000000000000..16d2b94d78f3 --- /dev/null +++ b/drivers/scsi/sssraid/sssraid_os.c @@ -0,0 +1,2337 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2022 3SNIC Information Technology, Ltd */ + +/* 3SNIC RAID SSSXXX Series Linux Driver */ + +#include <linux/version.h> +#include <linux/pci.h> +#include <linux/aer.h> +#include <linux/module.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/cdev.h> +#include <linux/sysfs.h> +#include <linux/gfp.h> +#include <linux/types.h> +#include <linux/ratelimit.h> +#include <linux/debugfs.h> +#include <linux/blkdev.h> +#include <linux/bsg-lib.h> +#include <linux/sort.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport.h> +#include <scsi/scsi_dbg.h> + +#include <linux/unaligned/be_byteshift.h> +#include <linux/unaligned/le_byteshift.h> +#include <linux/once.h> +#include <linux/sched/signal.h> +#include <linux/io-64-nonatomic-lo-hi.h> + +#include "sssraid.h" +#include "sssraid_debug.h" + +u32 admin_tmout = 60; +module_param(admin_tmout, uint, 0644); +MODULE_PARM_DESC(admin_tmout, "admin commands timeout (seconds)"); + +static u32 scmd_tmout_rawdisk = 180; +module_param(scmd_tmout_rawdisk, uint, 0644); +MODULE_PARM_DESC(scmd_tmout_rawdisk, "scsi commands timeout for rawdisk(seconds)"); + +static u32 scmd_tmout_vd = 180; +module_param(scmd_tmout_vd, uint, 0644); +MODULE_PARM_DESC(scmd_tmout_vd, "scsi commands timeout for vd(seconds)"); + +static int ioq_depth_set(const char *val, const struct kernel_param *kp); +static const struct kernel_param_ops ioq_depth_ops = { + .set = ioq_depth_set, + .get = param_get_uint, +}; + +u32 io_queue_depth = 1024; +module_param_cb(io_queue_depth, &ioq_depth_ops, &io_queue_depth, 0644); +MODULE_PARM_DESC(io_queue_depth, "set io queue depth, should >= 2"); + +static int logging_level_set(const char *val, const struct kernel_param *kp) +{ + u8 n = 0; + int ret; + + ret = kstrtou8(val, 10, &n); + if (ret != 0) + return -EINVAL; + + return param_set_byte(val, kp); +} + +static const struct kernel_param_ops logging_level_ops = { + .set = logging_level_set, + .get = param_get_byte, +}; + +static unsigned char logging_level; +module_param_cb(logging_level, &logging_level_ops, &logging_level, 0644); +MODULE_PARM_DESC(logging_level, "set log level, default zero for switch off"); + +static int small_pool_num_set(const char *val, const struct kernel_param *kp) +{ + u8 n = 0; + int ret; + + ret = kstrtou8(val, 10, &n); + if (ret != 0) + return -EINVAL; + if (n > MAX_SMALL_POOL_NUM) + n = MAX_SMALL_POOL_NUM; + if (n < 1) + n = 1; + *((u8 *)kp->arg) = n; + + return 0; +} + +static const struct kernel_param_ops small_pool_num_ops = { + .set = small_pool_num_set, + .get = param_get_byte, +}; + +/* Small pools are used to save PRP for small IOs.It was + * found that the spinlock of a single pool conflicts a + * lot with multiple CPUs.So multiple pools are introduced + * to reduce the conflictions. + */ +unsigned char small_pool_num = 4; +module_param_cb(small_pool_num, &small_pool_num_ops, &small_pool_num, 0644); +MODULE_PARM_DESC(small_pool_num, "set prp small pool num, default 4, MAX 16"); + +//static struct class *sssraid_class; + +enum FW_STAT_CODE { + FW_STAT_OK = 0, + FW_STAT_NEED_CHECK, + FW_STAT_ERROR, + FW_STAT_EP_PCIE_ERROR, + FW_STAT_NAC_DMA_ERROR, + FW_STAT_ABORTED, + FW_STAT_NEED_RETRY +}; + +static const char * const raid_levels[] = {"0", "1", "5", "6", "10", "50", "60", "NA"}; + +static const char * const raid_states[] = { + "NA", "NORMAL", "FAULT", "DEGRADE", "NOT_FORMATTED", "FORMATTING", "SANITIZING", + "INITIALIZING", "INITIALIZE_FAIL", "DELETING", "DELETE_FAIL", "WRITE_PROTECT" +}; + +static int ioq_depth_set(const char *val, const struct kernel_param *kp) +{ + int n = 0; + int ret; + + ret = kstrtoint(val, 10, &n); + if (ret != 0 || n < 2) + return -EINVAL; + + return param_set_int(val, kp); +} + +/* + * common + */ +static struct class *sssraid_class; + +struct sssraid_fwevt *sssraid_alloc_fwevt(int len) +{ + struct sssraid_fwevt *fwevt; + + fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC); + if (!fwevt) + return NULL; + + kref_init(&fwevt->ref_count); + return fwevt; + +} + +static void sssraid_fwevt_free(struct kref *r) +{ + kfree(container_of(r, struct sssraid_fwevt, ref_count)); +} + +static void sssraid_fwevt_get(struct sssraid_fwevt *fwevt) +{ + kref_get(&fwevt->ref_count); +} + +static void sssraid_fwevt_put(struct sssraid_fwevt *fwevt) +{ + kref_put(&fwevt->ref_count, sssraid_fwevt_free); +} + +static void sssraid_fwevt_del_from_list(struct sssraid_dev *hdev, + struct sssraid_fwevt *fwevt) +{ + unsigned long flags; + + spin_lock_irqsave(&hdev->fwevt_lock, flags); + if (!list_empty(&fwevt->list)) { + list_del_init(&fwevt->list); + /* + * Put fwevt reference count after + * removing it from fwevt_list + */ + sssraid_fwevt_put(fwevt); + } + spin_unlock_irqrestore(&hdev->fwevt_lock, flags); +} + +static void sssraid_fwevt_bh(struct sssraid_dev *hdev, + struct sssraid_fwevt *fwevt) +{ + struct sssraid_completion *cqe; + + hdev->current_event = fwevt; + sssraid_fwevt_del_from_list(hdev, fwevt); + + cqe = (struct sssraid_completion *)fwevt->event_data; + + if (!fwevt->process_evt) + goto evt_ack; + + sssraid_complete_aen(hdev, cqe); + +evt_ack: + /* event response put here: event has been handled. */ + sssraid_send_event_ack(hdev, fwevt->event_id, + fwevt->evt_ctx, le16_to_cpu(cqe->cmd_id)); + sssraid_fwevt_put(fwevt); + hdev->current_event = NULL; +} + +static void sssraid_fwevt_worker(struct work_struct *work) +{ + struct sssraid_fwevt *fwevt = container_of(work, struct sssraid_fwevt, + work); + sssraid_fwevt_bh(fwevt->hdev, fwevt); + /* + * Put fwevt reference count after + * dequeuing it from worker queue + */ + sssraid_fwevt_put(fwevt); +} + +void sssraid_fwevt_add_to_list(struct sssraid_dev *hdev, + struct sssraid_fwevt *fwevt) +{ + unsigned long flags; + + if (!hdev->fwevt_worker_thread) + return; + + spin_lock_irqsave(&hdev->fwevt_lock, flags); + /* get fwevt reference count while adding it to fwevt_list */ + sssraid_fwevt_get(fwevt); + INIT_LIST_HEAD(&fwevt->list); + list_add_tail(&fwevt->list, &hdev->fwevt_list); + INIT_WORK(&fwevt->work, sssraid_fwevt_worker); + /* get fwevt reference count while enqueueing it to worker queue */ + sssraid_fwevt_get(fwevt); + queue_work(hdev->fwevt_worker_thread, &fwevt->work); + spin_unlock_irqrestore(&hdev->fwevt_lock, flags); +} + +static struct sssraid_fwevt *sssraid_dequeue_fwevt( + struct sssraid_dev *hdev) +{ + unsigned long flags; + struct sssraid_fwevt *fwevt = NULL; + + spin_lock_irqsave(&hdev->fwevt_lock, flags); + if (!list_empty(&hdev->fwevt_list)) { + fwevt = list_first_entry(&hdev->fwevt_list, + struct sssraid_fwevt, list); + list_del_init(&fwevt->list); + /* + * Put fwevt reference count after + * removing it from fwevt_list + */ + sssraid_fwevt_put(fwevt); + } + spin_unlock_irqrestore(&hdev->fwevt_lock, flags); + + return fwevt; +} + +void sssraid_cleanup_fwevt_list(struct sssraid_dev *hdev) +{ + struct sssraid_fwevt *fwevt = NULL; + + if ((list_empty(&hdev->fwevt_list) && !hdev->current_event) || + !hdev->fwevt_worker_thread) + return; + + while ((fwevt = sssraid_dequeue_fwevt(hdev)) || + (fwevt = hdev->current_event)) { + /* + * Wait on the fwevt to complete. If this returns 1, then + * the event was never executed, and we need a put for the + * reference the work had on the fwevt. + * + * If it did execute, we wait for it to finish, and the put will + * happen from sssraid_process_fwevt() + */ + if (cancel_work_sync(&fwevt->work)) { + /* + * Put fwevt reference count after + * dequeuing it from worker queue + */ + sssraid_fwevt_put(fwevt); + /* + * Put fwevt reference count to neutralize + * kref_init increment + */ + sssraid_fwevt_put(fwevt); + } + } +} + +/* + * common 1 + */ +static int sssraid_npages_prp(struct sssraid_dev *hdev) +{ + u32 size = 1U << ((hdev->ctrl_info->mdts) * 1U) << 12; + u32 nprps = DIV_ROUND_UP(size + hdev->page_size, hdev->page_size); + + return DIV_ROUND_UP(PRP_ENTRY_SIZE * nprps, hdev->page_size - PRP_ENTRY_SIZE); +} + +static int sssraid_npages_sgl(struct sssraid_dev *hdev) +{ + u32 nsge = le16_to_cpu(hdev->ctrl_info->max_num_sge); + + return DIV_ROUND_UP(nsge * sizeof(struct sssraid_sgl_desc), hdev->page_size); +} + +static u32 sssraid_cmd_size(struct sssraid_dev *hdev) +{ + u32 alloc_size = sizeof(__le64 *) * max(sssraid_npages_prp(hdev), sssraid_npages_sgl(hdev)); + + ioc_info(hdev, "iod size: %lu, alloc_size: %u\n", + sizeof(struct sssraid_iod), alloc_size); + + return sizeof(struct sssraid_iod) + alloc_size; +} + +static int sssraid_setup_prps(struct sssraid_dev *hdev, struct sssraid_iod *iod) +{ + struct scatterlist *sg = iod->sg; + u64 dma_addr = sg_dma_address(sg); + int dma_len = sg_dma_len(sg); + __le64 *prp_list, *old_prp_list; + int page_size = hdev->page_size; + int offset = dma_addr & (page_size - 1); + void **list = sssraid_iod_list(iod); + int length = iod->length; + struct dma_pool *pool; + dma_addr_t prp_dma; + int nprps, i; + + length -= (page_size - offset); + if (length <= 0) { + iod->first_dma = 0; + return 0; + } + + dma_len -= (page_size - offset); + if (dma_len) { + dma_addr += (page_size - offset); + } else { + sg = sg_next(sg); + dma_addr = sg_dma_address(sg); + dma_len = sg_dma_len(sg); + } + + if (length <= page_size) { + iod->first_dma = dma_addr; + return 0; + } + + nprps = DIV_ROUND_UP(length, page_size); + if (nprps <= (SMALL_POOL_SIZE / PRP_ENTRY_SIZE)) { + pool = iod->sqinfo->prp_small_pool; + iod->npages = 0; + } else { + pool = hdev->prp_page_pool; + iod->npages = 1; + } + + prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma); + if (!prp_list) { + dev_err_ratelimited(&hdev->pdev->dev, "Allocate first prp_list memory failed\n"); + iod->first_dma = dma_addr; + iod->npages = -1; + return -ENOMEM; + } + list[0] = prp_list; + iod->first_dma = prp_dma; + i = 0; + for (;;) { + if (i == page_size / PRP_ENTRY_SIZE) { + old_prp_list = prp_list; + + prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma); + if (!prp_list) { + dev_err_ratelimited(&hdev->pdev->dev, "Allocate %dth prp_list memory failed\n", + iod->npages + 1); + return -ENOMEM; + } + list[iod->npages++] = prp_list; + prp_list[0] = old_prp_list[i - 1]; + old_prp_list[i - 1] = cpu_to_le64(prp_dma); + i = 1; + } + prp_list[i++] = cpu_to_le64(dma_addr); + dma_len -= page_size; + dma_addr += page_size; + length -= page_size; + if (length <= 0) + break; + if (dma_len > 0) + continue; + if (unlikely(dma_len < 0)) + goto bad_sgl; + sg = sg_next(sg); + dma_addr = sg_dma_address(sg); + dma_len = sg_dma_len(sg); + } + + return 0; + +bad_sgl: + ioc_err(hdev, "Setup prps, invalid SGL for payload: %d nents: %d\n", + iod->length, iod->nsge); + return -EIO; +} + +static inline bool sssraid_is_rw_scmd(struct scsi_cmnd *scmd) +{ + switch (scmd->cmnd[0]) { + case READ_6: + case READ_10: + case READ_12: + case READ_16: + case WRITE_6: + case WRITE_10: + case WRITE_12: + case WRITE_16: + return true; + default: + return false; + } +} + +static bool sssraid_is_prp(struct sssraid_dev *hdev, struct scsi_cmnd *scmd, u32 nsge) +{ + struct scatterlist *sg = scsi_sglist(scmd); + u32 page_mask = hdev->page_size - 1; + bool is_prp = true; + int i = 0; + + scsi_for_each_sg(scmd, sg, nsge, i) { + if (i != 0 && i != nsge - 1) { + if ((sg_dma_len(sg) & page_mask) || + (sg_dma_address(sg) & page_mask)) { + is_prp = false; + break; + } + } + + if (nsge > 1 && i == 0) { + if ((sg_dma_address(sg) + sg_dma_len(sg)) & page_mask) { + is_prp = false; + break; + } + } + + if (nsge > 1 && i == (nsge - 1)) { + if (sg_dma_address(sg) & page_mask) { + is_prp = false; + break; + } + } + } + + return is_prp; +} + +static void sssraid_sgl_set_data(struct sssraid_sgl_desc *sge, struct scatterlist *sg) +{ + sge->addr = cpu_to_le64(sg_dma_address(sg)); + sge->length = cpu_to_le32(sg_dma_len(sg)); + sge->type = SSSRAID_SGL_FMT_DATA_DESC << 4; +} + +static void sssraid_sgl_set_seg(struct sssraid_sgl_desc *sge, dma_addr_t dma_addr, int entries) +{ + sge->addr = cpu_to_le64(dma_addr); + if (entries <= SGES_PER_PAGE) { + sge->length = cpu_to_le32(entries * sizeof(*sge)); + sge->type = SSSRAID_SGL_FMT_LAST_SEG_DESC << 4; + } else { + sge->length = cpu_to_le32(PAGE_SIZE); + sge->type = SSSRAID_SGL_FMT_SEG_DESC << 4; + } +} + + +static int sssraid_setup_ioq_cmd_sgl(struct sssraid_dev *hdev, + struct scsi_cmnd *scmd, struct sssraid_ioq_command *ioq_cmd, + struct sssraid_iod *iod) +{ + struct sssraid_sgl_desc *sg_list, *link, *old_sg_list; + struct scatterlist *sg = scsi_sglist(scmd); + void **list = sssraid_iod_list(iod); + struct dma_pool *pool; + int nsge = iod->nsge; + dma_addr_t sgl_dma; + int i = 0; + + ioq_cmd->common.flags |= SSSRAID_CMD_FLAG_SGL_METABUF; + + if (nsge == 1) { + sssraid_sgl_set_data(&ioq_cmd->common.dptr.sgl, sg); + return 0; + } + + if (nsge <= (SMALL_POOL_SIZE / sizeof(struct sssraid_sgl_desc))) { + pool = iod->sqinfo->prp_small_pool; + iod->npages = 0; + } else { + pool = hdev->prp_page_pool; + iod->npages = 1; + } + + sg_list = dma_pool_alloc(pool, GFP_ATOMIC, &sgl_dma); + if (!sg_list) { + dev_err_ratelimited(&hdev->pdev->dev, "Allocate first sgl_list failed\n"); + iod->npages = -1; + return -ENOMEM; + } + + list[0] = sg_list; + iod->first_dma = sgl_dma; + sssraid_sgl_set_seg(&ioq_cmd->common.dptr.sgl, sgl_dma, nsge); + do { + if (i == SGES_PER_PAGE) { + old_sg_list = sg_list; + link = &old_sg_list[SGES_PER_PAGE - 1]; + + sg_list = dma_pool_alloc(pool, GFP_ATOMIC, &sgl_dma); + if (!sg_list) { + dev_err_ratelimited(&hdev->pdev->dev, "Allocate %dth sgl_list failed\n", + iod->npages + 1); + return -ENOMEM; + } + list[iod->npages++] = sg_list; + + i = 0; + memcpy(&sg_list[i++], link, sizeof(*link)); + sssraid_sgl_set_seg(link, sgl_dma, nsge); + } + + sssraid_sgl_set_data(&sg_list[i++], sg); + sg = sg_next(sg); + } while (--nsge > 0); + + return 0; +} + +static void sssraid_shost_init(struct sssraid_dev *hdev) +{ + struct pci_dev *pdev = hdev->pdev; + u8 domain, bus; + u32 dev_func; + + domain = pci_domain_nr(pdev->bus); + bus = pdev->bus->number; + dev_func = pdev->devfn; + + hdev->shost->nr_hw_queues = hdev->init_done_queue_cnt - 1; + hdev->shost->can_queue = (hdev->ioq_depth - SSSRAID_PTCMDS_PERQ); + + hdev->shost->sg_tablesize = le16_to_cpu(hdev->ctrl_info->max_num_sge); + /* 512B per sector */ + hdev->shost->max_sectors = (1U << ((hdev->ctrl_info->mdts) * 1U) << 12) / 512; + hdev->shost->cmd_per_lun = MAX_CMD_PER_DEV; + hdev->shost->max_channel = le16_to_cpu(hdev->ctrl_info->max_channel) - 1; + hdev->shost->max_id = le32_to_cpu(hdev->ctrl_info->max_tgt_id); + hdev->shost->max_lun = le16_to_cpu(hdev->ctrl_info->max_lun); + + hdev->shost->this_id = -1; + hdev->shost->unique_id = (domain << 16) | (bus << 8) | dev_func; + hdev->shost->max_cmd_len = MAX_CDB_LEN; + hdev->shost->hostt->cmd_size = sssraid_cmd_size(hdev); +} + +static inline void sssraid_get_tag_from_scmd(struct scsi_cmnd *scmd, u16 *qidx, u16 *cid) +{ + u32 tag = blk_mq_unique_tag(scmd->request); + + *qidx = blk_mq_unique_tag_to_hwq(tag) + 1; + *cid = blk_mq_unique_tag_to_tag(tag); +} + +static inline uint32_t get_unaligned_be24(const uint8_t *const p) +{ + return get_unaligned_be32(p - 1) & 0xffffffU; +} + +static int sssraid_setup_rw_cmd(struct sssraid_dev *hdev, + struct sssraid_rw_command *rw, + struct scsi_cmnd *scmd) +{ + u32 start_lba_lo, start_lba_hi; + u32 datalength = 0; + u16 control = 0; + + start_lba_lo = 0; + start_lba_hi = 0; + + if (scmd->sc_data_direction == DMA_TO_DEVICE) { + rw->opcode = SSSRAID_CMD_WRITE; + } else if (scmd->sc_data_direction == DMA_FROM_DEVICE) { + rw->opcode = SSSRAID_CMD_READ; + } else { + ioc_err(hdev, "Invalid RW_IO for unsupported data direction: %d\n", + scmd->sc_data_direction); + WARN_ON(1); + return -EINVAL; + } + + /* 6-byte READ(0x08) or WRITE(0x0A) cdb */ + if (scmd->cmd_len == 6) { + datalength = (u32)(scmd->cmnd[4] == 0 ? + IO_6_DEFAULT_TX_LEN : scmd->cmnd[4]); + start_lba_lo = (u32)get_unaligned_be24(&scmd->cmnd[1]); + + start_lba_lo &= 0x1FFFFF; + } + + /* 10-byte READ(0x28) or WRITE(0x2A) cdb */ + else if (scmd->cmd_len == 10) { + datalength = (u32)get_unaligned_be16(&scmd->cmnd[7]); + start_lba_lo = get_unaligned_be32(&scmd->cmnd[2]); + + if (scmd->cmnd[1] & FUA_MASK) + control |= SSSRAID_RW_FUA; + } + + /* 12-byte READ(0xA8) or WRITE(0xAA) cdb */ + else if (scmd->cmd_len == 12) { + datalength = get_unaligned_be32(&scmd->cmnd[6]); + start_lba_lo = get_unaligned_be32(&scmd->cmnd[2]); + + if (scmd->cmnd[1] & FUA_MASK) + control |= SSSRAID_RW_FUA; + } + /* 16-byte READ(0x88) or WRITE(0x8A) cdb */ + else if (scmd->cmd_len == 16) { + datalength = get_unaligned_be32(&scmd->cmnd[10]); + start_lba_lo = get_unaligned_be32(&scmd->cmnd[6]); + start_lba_hi = get_unaligned_be32(&scmd->cmnd[2]); + + if (scmd->cmnd[1] & FUA_MASK) + control |= SSSRAID_RW_FUA; + } + + if (unlikely(datalength > U16_MAX || datalength == 0)) { + ioc_err(hdev, "Invalid IO for illegal transfer data length: %u\n", datalength); + WARN_ON(1); + return -EINVAL; + } + + rw->slba = cpu_to_le64(((u64)start_lba_hi << 32) | start_lba_lo); + /* 0base for nlb */ + rw->nlb = cpu_to_le16((u16)(datalength - 1)); + rw->control = cpu_to_le16(control); + + return 0; +} + +static int sssraid_setup_nonio_cmd(struct sssraid_dev *hdev, + struct sssraid_scsi_nonio *scsi_nonio, struct scsi_cmnd *scmd) +{ + scsi_nonio->buffer_len = cpu_to_le32(scsi_bufflen(scmd)); + + switch (scmd->sc_data_direction) { + case DMA_NONE: + scsi_nonio->opcode = SSSRAID_CMD_NONIO_NONE; + break; + case DMA_TO_DEVICE: + scsi_nonio->opcode = SSSRAID_CMD_NONIO_TODEV; + break; + case DMA_FROM_DEVICE: + scsi_nonio->opcode = SSSRAID_CMD_NONIO_FROMDEV; + break; + default: + ioc_err(hdev, "Invalid NON_IO for unsupported data direction: %d\n", + scmd->sc_data_direction); + WARN_ON(1); + return -EINVAL; + } + + return 0; +} + +static int sssraid_setup_ioq_cmd(struct sssraid_dev *hdev, + struct sssraid_ioq_command *ioq_cmd, struct scsi_cmnd *scmd) +{ + memcpy(ioq_cmd->common.cdb, scmd->cmnd, scmd->cmd_len); + ioq_cmd->common.cdb_len = scmd->cmd_len; + + if (sssraid_is_rw_scmd(scmd)) + return sssraid_setup_rw_cmd(hdev, &ioq_cmd->rw, scmd); + else + return sssraid_setup_nonio_cmd(hdev, &ioq_cmd->scsi_nonio, scmd); +} + +static inline void sssraid_init_iod(struct sssraid_iod *iod) +{ + iod->nsge = 0; + iod->npages = -1; + iod->use_sgl = false; + WRITE_ONCE(iod->state, SSSRAID_CMD_IDLE); +} + +int sssraid_io_map_data(struct sssraid_dev *hdev, struct sssraid_iod *iod, + struct scsi_cmnd *scmd, struct sssraid_ioq_command *ioq_cmd) +{ + int retval; + + retval = scsi_dma_map(scmd); + if (unlikely(retval < 0)) + return retval; + iod->nsge = retval; + /* No data to DMA, it may be scsi no-rw command */ + if (unlikely(iod->nsge == 0)) + return 0; + + iod->length = scsi_bufflen(scmd); + iod->sg = scsi_sglist(scmd); + iod->use_sgl = !sssraid_is_prp(hdev, scmd, iod->nsge); + + if (iod->use_sgl) { + retval = sssraid_setup_ioq_cmd_sgl(hdev, scmd, ioq_cmd, iod); + } else { + retval = sssraid_setup_prps(hdev, iod); + ioq_cmd->common.dptr.prp1 = + cpu_to_le64(sg_dma_address(iod->sg)); + ioq_cmd->common.dptr.prp2 = cpu_to_le64(iod->first_dma); + } + + if (retval) + scsi_dma_unmap(scmd); + + return retval; +} + +void sssraid_map_status(struct sssraid_iod *iod, struct scsi_cmnd *scmd, + struct sssraid_completion *cqe) +{ + struct sssraid_dev *hdev = iod->sqinfo->hdev; + + scsi_set_resid(scmd, 0); + + switch ((le16_to_cpu(cqe->status) >> 1) & 0x7f) { + case FW_STAT_OK: + set_host_byte(scmd, DID_OK); + break; + case FW_STAT_NEED_CHECK: + set_host_byte(scmd, DID_OK); + scmd->result |= le16_to_cpu(cqe->status) >> 8; + if (scmd->result & SAM_STAT_CHECK_CONDITION) { + memset(scmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); + memcpy(scmd->sense_buffer, iod->sense, SCSI_SENSE_BUFFERSIZE); + scmd->result = (scmd->result & 0x00ffffff) | (DRIVER_SENSE << 24); + } + break; + case FW_STAT_ABORTED: + set_host_byte(scmd, DID_ABORT); + break; + case FW_STAT_NEED_RETRY: + set_host_byte(scmd, DID_REQUEUE); + break; + default: + set_host_byte(scmd, DID_BAD_TARGET); + ioc_warn(hdev, "cid[%d] qid[%d] bad status[0x%x]\n", + le16_to_cpu(cqe->cmd_id), le16_to_cpu(cqe->sq_id), + le16_to_cpu(cqe->status)); + break; + } +} + + +struct sssraid_cmd *sssraid_get_cmd(struct sssraid_dev *hdev, enum sssraid_cmd_type type) +{ + struct sssraid_cmd *cmd = NULL; + unsigned long flags; + struct list_head *head = &hdev->adm_cmd_list; + spinlock_t *slock = &hdev->adm_cmd_lock; + + if (type == SSSRAID_CMD_IOPT) { + head = &hdev->ioq_pt_list; + slock = &hdev->ioq_pt_lock; + } + + spin_lock_irqsave(slock, flags); + if (list_empty(head)) { + spin_unlock_irqrestore(slock, flags); + ioc_err(hdev, "err, cmd[%d] list empty\n", type); + return NULL; + } + cmd = list_entry(head->next, struct sssraid_cmd, list); + list_del_init(&cmd->list); + spin_unlock_irqrestore(slock, flags); + + WRITE_ONCE(cmd->state, SSSRAID_CMD_IN_FLIGHT); + + return cmd; +} + +static int sssraid_add_device(struct sssraid_dev *hdev, struct sssraid_dev_info *device) +{ + struct Scsi_Host *shost = hdev->shost; + struct scsi_device *sdev; + + ioc_info(hdev, "add device, hdid: %u target: %d, channel: %d, lun: %d, attr[0x%x]\n", + le32_to_cpu(device->hdid), le16_to_cpu(device->target), + device->channel, device->lun, device->attr); + + sdev = scsi_device_lookup(shost, device->channel, le16_to_cpu(device->target), 0); + if (sdev) { + ioc_warn(hdev, "Device is already exist, channel: %d, target_id: %d, lun: %d\n", + device->channel, le16_to_cpu(device->target), 0); + scsi_device_put(sdev); + return -EEXIST; + } + scsi_add_device(shost, device->channel, le16_to_cpu(device->target), 0); + return 0; +} + +static int sssraid_rescan_device(struct sssraid_dev *hdev, struct sssraid_dev_info *device) +{ + struct Scsi_Host *shost = hdev->shost; + struct scsi_device *sdev; + + ioc_info(hdev, "rescan device, hdid: %u target: %d, channel: %d, lun: %d, attr[0x%x]\n", + le32_to_cpu(device->hdid), le16_to_cpu(device->target), + device->channel, device->lun, device->attr); + + sdev = scsi_device_lookup(shost, device->channel, le16_to_cpu(device->target), 0); + if (!sdev) { + ioc_warn(hdev, "device is not exit rescan it, channel: %d, target_id: %d, lun: %d\n", + device->channel, le16_to_cpu(device->target), 0); + return -ENODEV; + } + + scsi_rescan_device(&sdev->sdev_gendev); + scsi_device_put(sdev); + return 0; +} + +static int sssraid_remove_device(struct sssraid_dev *hdev, struct sssraid_dev_info *org_device) +{ + struct Scsi_Host *shost = hdev->shost; + struct scsi_device *sdev; + + ioc_info(hdev, "remove device, hdid: %u target: %d, channel: %d, lun: %d, attr[0x%x]\n", + le32_to_cpu(org_device->hdid), le16_to_cpu(org_device->target), + org_device->channel, org_device->lun, org_device->attr); + + sdev = scsi_device_lookup(shost, org_device->channel, le16_to_cpu(org_device->target), 0); + if (!sdev) { + ioc_warn(hdev, "device is not exit remove it, channel: %d, target_id: %d, lun: %d\n", + org_device->channel, le16_to_cpu(org_device->target), 0); + return -ENODEV; + } + + scsi_remove_device(sdev); + scsi_device_put(sdev); + return 0; +} + +static int luntarget_cmp_func(const void *l, const void *r) +{ + const struct sssraid_dev_info *ln = l; + const struct sssraid_dev_info *rn = r; + int l_attr = SSSRAID_DEV_INFO_ATTR_BOOT(ln->attr); + int r_attr = SSSRAID_DEV_INFO_ATTR_BOOT(rn->attr); + + /* boot first */ + if (l_attr != r_attr) + return (r_attr - l_attr); + + if (ln->channel == rn->channel) + return le16_to_cpu(ln->target) - le16_to_cpu(rn->target); + + return ln->channel - rn->channel; +} + +void sssraid_scan_disk(struct sssraid_dev *hdev) +{ + struct sssraid_dev_info *devices, *org_devices; + struct sssraid_dev_info *sortdevice; + u32 nd = le32_to_cpu(hdev->ctrl_info->nd); + u8 flag, org_flag; + int i, ret; + int count = 0; + + devices = kcalloc(nd, sizeof(struct sssraid_dev_info), GFP_KERNEL); + if (!devices) + return; + + sortdevice = kcalloc(nd, sizeof(struct sssraid_dev_info), GFP_KERNEL); + if (!sortdevice) + goto free_list; + + ret = sssraid_get_dev_list(hdev, devices); + if (ret) + goto free_all; + org_devices = hdev->devices; + for (i = 0; i < nd; i++) { + org_flag = org_devices[i].flag; + flag = devices[i].flag; + + dbgprint(hdev, "i: %d, org_flag: 0x%x, flag: 0x%x\n", i, org_flag, flag); + + if (SSSRAID_DEV_INFO_FLAG_VALID(flag)) { + if (!SSSRAID_DEV_INFO_FLAG_VALID(org_flag)) { + down_write(&hdev->devices_rwsem); + memcpy(&org_devices[i], &devices[i], + sizeof(struct sssraid_dev_info)); + memcpy(&sortdevice[count++], &devices[i], + sizeof(struct sssraid_dev_info)); + up_write(&hdev->devices_rwsem); + } else if (SSSRAID_DEV_INFO_FLAG_CHANGE(flag)) { + sssraid_rescan_device(hdev, &devices[i]); + } + } else { + if (SSSRAID_DEV_INFO_FLAG_VALID(org_flag)) { + down_write(&hdev->devices_rwsem); + org_devices[i].flag &= 0xfe; + up_write(&hdev->devices_rwsem); + sssraid_remove_device(hdev, &org_devices[i]); + } + } + } + + ioc_info(hdev, "scan work add device count = %d\n", count); + + sort(sortdevice, count, sizeof(sortdevice[0]), luntarget_cmp_func, NULL); + + for (i = 0; i < count; i++) + sssraid_add_device(hdev, &sortdevice[i]); + +free_all: + kfree(sortdevice); +free_list: + kfree(devices); +} + +static int sssraid_wait_abnl_cmd_done(struct sssraid_iod *iod) +{ + u16 times = 0; + + do { + if (READ_ONCE(iod->state) == SSSRAID_CMD_TMO_COMPLETE) + break; + msleep(500); + times++; + } while (times <= SSSRAID_WAIT_ABNL_CMD_TIMEOUT); + + /* wait command completion timeout after abort/reset success */ + if (times >= SSSRAID_WAIT_ABNL_CMD_TIMEOUT) + return -ETIMEDOUT; + + return 0; +} + +static bool sssraid_check_scmd_completed(struct scsi_cmnd *scmd) +{ + struct sssraid_dev *hdev = shost_priv(scmd->device->host); + struct sssraid_iod *iod = scsi_cmd_priv(scmd); + struct sssraid_squeue *sqinfo; + u16 hwq, cid; + + sssraid_get_tag_from_scmd(scmd, &hwq, &cid); + sqinfo = &hdev->sqinfo[hwq]; + if (READ_ONCE(iod->state) == SSSRAID_CMD_COMPLETE || sssraid_poll_cq(hdev, hwq, cid)) { + ioc_warn(hdev, "cid[%d] qidx[%d] has been completed\n", + cid, sqinfo->qidx); + return true; + } + return false; +} + +static int sssraid_scsi_reset(struct scsi_cmnd *scmd, enum sssraid_scsi_rst_type rst) +{ + struct sssraid_dev *hdev = shost_priv(scmd->device->host); + struct sssraid_iod *iod = scsi_cmd_priv(scmd); + struct sssraid_sdev_hostdata *hostdata; + u16 hwq, cid; + int ret; + + scsi_print_command(scmd); + + if (hdev->state != SSSRAID_LIVE || !sssraid_wait_abnl_cmd_done(iod) || + sssraid_check_scmd_completed(scmd)) + return SUCCESS; + + hostdata = scmd->device->hostdata; + sssraid_get_tag_from_scmd(scmd, &hwq, &cid); + + ioc_warn(hdev, "cid[%d] qidx[%d] timeout, %s reset\n", cid, hwq, + rst ? "bus" : "target"); + ret = sssraid_send_reset_cmd(hdev, rst, hostdata->hdid); + if (ret == 0) { + ret = sssraid_wait_abnl_cmd_done(iod); + if (ret) { + ioc_warn(hdev, "cid[%d] qidx[%d] %s reset failed, not found\n", + cid, hwq, rst ? "bus" : "target"); + return FAILED; + } + + ioc_warn(hdev, "cid[%d] qidx[%d] %s reset success\n", cid, hwq, + rst ? "bus" : "target"); + return SUCCESS; + } + + ioc_warn(hdev, "cid[%d] qidx[%d] ret[%d] %s reset failed\n", cid, hwq, ret, + rst ? "bus" : "target"); + return FAILED; +} + +bool sssraid_change_host_state(struct sssraid_dev *hdev, enum sssraid_state newstate) +{ + unsigned long flags; + enum sssraid_state oldstate; + bool change = false; + + spin_lock_irqsave(&hdev->state_lock, flags); + + oldstate = hdev->state; + switch (newstate) { + case SSSRAID_LIVE: + switch (oldstate) { + case SSSRAID_NEW: + case SSSRAID_RESETTING: + change = true; + break; + default: + break; + } + break; + case SSSRAID_RESETTING: + switch (oldstate) { + case SSSRAID_LIVE: + change = true; + break; + default: + break; + } + break; + case SSSRAID_DELETING: + if (oldstate != SSSRAID_DELETING) + change = true; + break; + case SSSRAID_DEAD: + switch (oldstate) { + case SSSRAID_NEW: + case SSSRAID_LIVE: + case SSSRAID_RESETTING: + change = true; + break; + default: + break; + } + break; + default: + break; + } + if (change) + hdev->state = newstate; + spin_unlock_irqrestore(&hdev->state_lock, flags); + + ioc_info(hdev, "[%d]->[%d], change[%d]\n", oldstate, newstate, change); + + return change; +} + +static int sssraid_get_qd_by_disk(u8 attr) +{ + switch (SSSRAID_DEV_DISK_TYPE(attr)) { + case SSSRAID_SAS_HDD_VD: + case SSSRAID_SATA_HDD_VD: + return SSSRAID_HDD_VD_QD; + case SSSRAID_SAS_SSD_VD: + case SSSRAID_SATA_SSD_VD: + case SSSRAID_NVME_SSD_VD: + return SSSRAID_SSD_VD_QD; + case SSSRAID_SAS_HDD_PD: + case SSSRAID_SATA_HDD_PD: + return SSSRAID_HDD_PD_QD; + case SSSRAID_SAS_SSD_PD: + case SSSRAID_SATA_SSD_PD: + case SSSRAID_NVME_SSD_PD: + return SSSRAID_SSD_PD_QD; + default: + return MAX_CMD_PER_DEV; + } +} + +static int sssraid_match_dev(struct sssraid_dev *hdev, u16 idx, struct scsi_device *sdev) +{ + if (SSSRAID_DEV_INFO_FLAG_VALID(hdev->devices[idx].flag)) { + if (sdev->channel == hdev->devices[idx].channel && + sdev->id == le16_to_cpu(hdev->devices[idx].target) && + sdev->lun < hdev->devices[idx].lun) { + ioc_info(hdev, "Match device success, channel:target:lun[%d:%d:%d]\n", + hdev->devices[idx].channel, + hdev->devices[idx].target, + hdev->devices[idx].lun); + return 1; + } + } + + return 0; +} + +static int sssraid_bsg_map_data(struct sssraid_dev *hdev, struct bsg_job *job, + struct sssraid_admin_command *cmd) +{ + struct request *rq = blk_mq_rq_from_pdu(job); + struct sssraid_iod *iod = job->dd_data; + enum dma_data_direction dma_dir = rq_data_dir(rq) ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + int ret = 0; + + iod->sg = job->request_payload.sg_list; + iod->nsge = job->request_payload.sg_cnt; + iod->length = job->request_payload.payload_len; + iod->use_sgl = false; + iod->npages = -1; + + if (!iod->nsge) + goto out; + + ret = dma_map_sg_attrs(&hdev->pdev->dev, iod->sg, iod->nsge, dma_dir, DMA_ATTR_NO_WARN); + if (!ret) + goto out; + + ret = sssraid_setup_prps(hdev, iod); + if (ret) + goto unmap; + + cmd->common.dptr.prp1 = cpu_to_le64(sg_dma_address(iod->sg)); + cmd->common.dptr.prp2 = cpu_to_le64(iod->first_dma); + + return 0; + +unmap: + dma_unmap_sg(&hdev->pdev->dev, iod->sg, iod->nsge, dma_dir); +out: + return ret; +} + +static void sssraid_bsg_unmap_data(struct sssraid_dev *hdev, struct bsg_job *job) +{ + struct request *rq = blk_mq_rq_from_pdu(job); + struct sssraid_iod *iod = job->dd_data; + enum dma_data_direction dma_dir = rq_data_dir(rq) ? DMA_TO_DEVICE : DMA_FROM_DEVICE; + + if (iod->nsge) + dma_unmap_sg(&hdev->pdev->dev, iod->sg, iod->nsge, dma_dir); + + sssraid_free_iod_res(hdev, iod); +} + +void sssraid_put_cmd(struct sssraid_dev *hdev, struct sssraid_cmd *cmd, + enum sssraid_cmd_type type) +{ + unsigned long flags; + struct list_head *head = &hdev->adm_cmd_list; + spinlock_t *slock = &hdev->adm_cmd_lock; + + if (type == SSSRAID_CMD_IOPT) { + head = &hdev->ioq_pt_list; + slock = &hdev->ioq_pt_lock; + } + + spin_lock_irqsave(slock, flags); + WRITE_ONCE(cmd->state, SSSRAID_CMD_IDLE); + list_add_tail(&cmd->list, head); + spin_unlock_irqrestore(slock, flags); +} + +static int sssraid_user_admin_cmd(struct sssraid_dev *hdev, struct bsg_job *job) +{ + struct sssraid_bsg_request *bsg_req = job->request; + struct sssraid_passthru_common_cmd *cmd = &(bsg_req->admcmd); + struct sssraid_admin_command admin_cmd; + u32 timeout = msecs_to_jiffies(cmd->timeout_ms); + u32 result[2] = {0}; + int status; + + if (hdev->state >= SSSRAID_RESETTING) { + ioc_err(hdev, "err, host state:[%d] is not right\n", + hdev->state); + return -EBUSY; + } + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.common.opcode = cmd->opcode; + admin_cmd.common.flags = cmd->flags; + admin_cmd.common.hdid = cpu_to_le32(cmd->nsid); + admin_cmd.common.cdw2[0] = cpu_to_le32(cmd->cdw2); + admin_cmd.common.cdw2[1] = cpu_to_le32(cmd->cdw3); + admin_cmd.common.cdw10 = cpu_to_le32(cmd->cdw10); + admin_cmd.common.cdw11 = cpu_to_le32(cmd->cdw11); + admin_cmd.common.cdw12 = cpu_to_le32(cmd->cdw12); + admin_cmd.common.cdw13 = cpu_to_le32(cmd->cdw13); + admin_cmd.common.cdw14 = cpu_to_le32(cmd->cdw14); + admin_cmd.common.cdw15 = cpu_to_le32(cmd->cdw15); + + status = sssraid_bsg_map_data(hdev, job, &admin_cmd); + if (status) { + ioc_err(hdev, "err, map data failed\n"); + return status; + } + + status = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, &result[0], &result[1], timeout); + if (status >= 0) { + job->reply_len = sizeof(result); + memcpy(job->reply, result, sizeof(result)); + } + + if (status) + ioc_info(hdev, "opcode[0x%x] subopcode[0x%x], status[0x%x] result0[0x%x] result1[0x%x]\n", + cmd->opcode, cmd->info_0.subopcode, status, result[0], result[1]); + + sssraid_bsg_unmap_data(hdev, job); + + return status; +} + +static int sssraid_submit_ioq_sync_cmd(struct sssraid_dev *hdev, struct sssraid_ioq_command *cmd, + u32 *result, u32 *reslen, u32 timeout) +{ + int ret; + dma_addr_t sense_dma; + struct sssraid_squeue *sqinfo; + void *sense_addr = NULL; + struct sssraid_cmd *pt_cmd = sssraid_get_cmd(hdev, SSSRAID_CMD_IOPT); + + if (!pt_cmd) { + ioc_err(hdev, "err, get sqinfo cmd failed\n"); + return -EFAULT; + } + + timeout = timeout ? timeout : ADMIN_TIMEOUT; + + init_completion(&pt_cmd->cmd_done); + + sqinfo = &hdev->sqinfo[pt_cmd->qid]; + ret = pt_cmd->cid * SCSI_SENSE_BUFFERSIZE; + sense_addr = sqinfo->sense + ret; + sense_dma = sqinfo->sense_dma_addr + ret; + + cmd->common.sense_addr = cpu_to_le64(sense_dma); + cmd->common.sense_len = cpu_to_le16(SCSI_SENSE_BUFFERSIZE); + cmd->common.command_id = cpu_to_le16(pt_cmd->cid); + + sssraid_submit_cmd(sqinfo, cmd); + + if (!wait_for_completion_timeout(&pt_cmd->cmd_done, timeout)) { + ioc_err(hdev, "cid[%d] qid[%d] timeout, opcode[0x%x] subopcode[0x%x]\n", + pt_cmd->cid, pt_cmd->qid, cmd->common.opcode, + (le32_to_cpu(cmd->common.cdw3[0]) & 0xffff)); + + /* reset controller if admin timeout */ + sssraid_adm_timeout(hdev, pt_cmd); + + sssraid_put_cmd(hdev, pt_cmd, SSSRAID_CMD_IOPT); + return -ETIME; + } + + if (result && reslen) { + if ((pt_cmd->status & 0x17f) == 0x101) { + memcpy(result, sense_addr, SCSI_SENSE_BUFFERSIZE); + *reslen = SCSI_SENSE_BUFFERSIZE; + } + } + + sssraid_put_cmd(hdev, pt_cmd, SSSRAID_CMD_IOPT); + + return pt_cmd->status; +} + +static int sssraid_user_ioq_cmd(struct sssraid_dev *hdev, struct bsg_job *job) +{ + struct sssraid_bsg_request *bsg_req = (struct sssraid_bsg_request *)(job->request); + struct sssraid_ioq_passthru_cmd *cmd = &(bsg_req->ioqcmd); + struct sssraid_ioq_command ioq_cmd; + int status = 0; + u32 timeout = msecs_to_jiffies(cmd->timeout_ms); + + if (cmd->data_len > IOQ_PT_DATA_LEN) { + ioc_err(hdev, "data len bigger than 4k\n"); + return -EFAULT; + } + + if (hdev->state != SSSRAID_LIVE) { + ioc_err(hdev, "err, host state:[%d] is not live\n", + hdev->state); + return -EBUSY; + } + + ioc_info(hdev, "opcode[0x%x] subopcode[0x%x] init, datalen[%d]\n", + cmd->opcode, cmd->info_1.subopcode, cmd->data_len); + + memset(&ioq_cmd, 0, sizeof(ioq_cmd)); + ioq_cmd.common.opcode = cmd->opcode; + ioq_cmd.common.flags = cmd->flags; + ioq_cmd.common.hdid = cpu_to_le32(cmd->nsid); + ioq_cmd.common.sense_len = cpu_to_le16(cmd->info_0.res_sense_len); + ioq_cmd.common.cdb_len = cmd->info_0.cdb_len; + ioq_cmd.common.rsvd2 = cmd->info_0.rsvd0; + ioq_cmd.common.cdw3[0] = cpu_to_le32(cmd->cdw3); + ioq_cmd.common.cdw3[1] = cpu_to_le32(cmd->cdw4); + ioq_cmd.common.cdw3[2] = cpu_to_le32(cmd->cdw5); + + ioq_cmd.common.cdw10[0] = cpu_to_le32(cmd->cdw10); + ioq_cmd.common.cdw10[1] = cpu_to_le32(cmd->cdw11); + ioq_cmd.common.cdw10[2] = cpu_to_le32(cmd->cdw12); + ioq_cmd.common.cdw10[3] = cpu_to_le32(cmd->cdw13); + ioq_cmd.common.cdw10[4] = cpu_to_le32(cmd->cdw14); + ioq_cmd.common.cdw10[5] = cpu_to_le32(cmd->data_len); + + memcpy(ioq_cmd.common.cdb, &cmd->cdw16, cmd->info_0.cdb_len); + + ioq_cmd.common.cdw26[0] = cpu_to_le32(cmd->cdw26[0]); + ioq_cmd.common.cdw26[1] = cpu_to_le32(cmd->cdw26[1]); + ioq_cmd.common.cdw26[2] = cpu_to_le32(cmd->cdw26[2]); + ioq_cmd.common.cdw26[3] = cpu_to_le32(cmd->cdw26[3]); + + status = sssraid_bsg_map_data(hdev, job, (struct sssraid_admin_command *)&ioq_cmd); + if (status) { + ioc_err(hdev, "err, map data failed\n"); + return status; + } + + status = sssraid_submit_ioq_sync_cmd(hdev, &ioq_cmd, job->reply, &job->reply_len, timeout); + if (status) + ioc_info(hdev, "opcode[0x%x] subopcode[0x%x], status[0x%x], reply_len[%d]\n", + cmd->opcode, cmd->info_1.subopcode, status, job->reply_len); + + sssraid_bsg_unmap_data(hdev, job); + + return status; +} + + +/* bsg dispatch user command */ +static int sssraid_bsg_host_dispatch(struct bsg_job *job) +{ + struct Scsi_Host *shost = dev_to_shost(job->dev); + struct sssraid_dev *hdev = shost_priv(shost); + struct request *rq = blk_mq_rq_from_pdu(job); + struct sssraid_bsg_request *bsg_req = job->request; + int ret = -ENOMSG; + + job->reply_len = 0; + + if (bsg_req == NULL || job->request_len != sizeof(struct sssraid_bsg_request)) { + bsg_job_done(job, ret, 0); + return 0; + } + dbgprint(hdev, "bsg msgcode[%d] msglen[%d] timeout[%d];" + "reqnsge[%d], reqlen[%d]\n", + bsg_req->msgcode, job->request_len, rq->timeout, + job->request_payload.sg_cnt, job->request_payload.payload_len); + + switch (bsg_req->msgcode) { + case SSSRAID_BSG_ADM: + ret = sssraid_user_admin_cmd(hdev, job); + break; + case SSSRAID_BSG_IOQ: + ret = sssraid_user_ioq_cmd(hdev, job); + break; + default: + ioc_info(hdev, "unsupport msgcode[%d]\n", bsg_req->msgcode); + break; + } + + if (ret > 0) + ret = ret | (ret << 8); + + bsg_job_done(job, ret, 0); + return 0; +} + +static inline void sssraid_remove_bsg(struct sssraid_dev *hdev) +{ + if (hdev->bsg_queue) { + bsg_unregister_queue(hdev->bsg_queue); + blk_cleanup_queue(hdev->bsg_queue); + } +} + +static void sssraid_back_fault_cqe(struct sssraid_squeue *sqinfo, struct sssraid_completion *cqe) +{ + struct sssraid_dev *hdev = sqinfo->hdev; + struct blk_mq_tags *tags; + struct scsi_cmnd *scmd; + struct sssraid_iod *iod; + struct request *req; + + tags = hdev->shost->tag_set.tags[sqinfo->qidx - 1]; + req = blk_mq_tag_to_rq(tags, le16_to_cpu(cqe->cmd_id)); + if (unlikely(!req || !blk_mq_request_started(req))) + return; + + scmd = blk_mq_rq_to_pdu(req); + iod = scsi_cmd_priv(scmd); + + if (READ_ONCE(iod->state) != SSSRAID_CMD_IN_FLIGHT && + READ_ONCE(iod->state) != SSSRAID_CMD_TIMEOUT) + return; + + WRITE_ONCE(iod->state, SSSRAID_CMD_TMO_COMPLETE); + set_host_byte(scmd, DID_NO_CONNECT); + if (iod->nsge) + scsi_dma_unmap(scmd); + sssraid_free_iod_res(hdev, iod); + scmd->scsi_done(scmd); + ioc_warn(hdev, "Back fault CQE, cid[%d] qidx[%d]\n", + le16_to_cpu(cqe->cmd_id), sqinfo->qidx); +} + +void sssraid_back_all_io(struct sssraid_dev *hdev) +{ + int i, j; + struct sssraid_squeue *sqinfo; + struct sssraid_completion cqe = { 0 }; + + scsi_block_requests(hdev->shost); + + for (i = 1; i <= hdev->shost->nr_hw_queues; i++) { + sqinfo = &hdev->sqinfo[i]; + for (j = 0; j < hdev->scsi_qd; j++) { + cqe.cmd_id = cpu_to_le16(j); + sssraid_back_fault_cqe(sqinfo, &cqe); + } + } + + scsi_unblock_requests(hdev->shost); + + j = SSSRAID_AQ_BLK_MQ_DEPTH; + for (i = 0; i < j; i++) { + if (READ_ONCE(hdev->adm_cmds[i].state) == SSSRAID_CMD_IN_FLIGHT) { + ioc_info(hdev, "Back adm, cid[%d]\n", i); + hdev->adm_cmds[i].status = 0xFFFF; + WRITE_ONCE(hdev->adm_cmds[i].state, SSSRAID_CMD_COMPLETE); + complete(&(hdev->adm_cmds[i].cmd_done)); + } + } + + j = SSSRAID_NR_IOQ_PTCMDS; + for (i = 0; i < j; i++) { + if (READ_ONCE(hdev->ioq_ptcmds[i].state) == SSSRAID_CMD_IN_FLIGHT) { + hdev->ioq_ptcmds[i].status = 0xFFFF; + WRITE_ONCE(hdev->ioq_ptcmds[i].state, SSSRAID_CMD_COMPLETE); + complete(&(hdev->ioq_ptcmds[i].cmd_done)); + } + } +} + +/** + * static struct scsi_host_template sssraid_driver_template + */ +static int sssraid_scan_finished(struct Scsi_Host *shost, + unsigned long time) +{ + struct sssraid_dev *hdev = shost_priv(shost); + + sssraid_scan_disk(hdev); + + return 1; +} + +/* eh_target_reset_handler call back */ +static int sssraid_eh_target_reset(struct scsi_cmnd *scmd) +{ + return sssraid_scsi_reset(scmd, SSSRAID_RESET_TARGET); +} + +/* eh_bus_reset_handler call back */ +static int sssraid_bus_reset_handler(struct scsi_cmnd *scmd) +{ + return sssraid_scsi_reset(scmd, SSSRAID_RESET_BUS); +} + +/* eh_host_reset_handler call back */ +static int sssraid_eh_host_reset(struct scsi_cmnd *scmd) +{ + u16 hwq, cid; + struct sssraid_dev *hdev = shost_priv(scmd->device->host); + + scsi_print_command(scmd); + if (hdev->state != SSSRAID_LIVE || sssraid_check_scmd_completed(scmd)) + return SUCCESS; + + sssraid_get_tag_from_scmd(scmd, &hwq, &cid); + ioc_warn(hdev, "cid[%d] qidx[%d] host reset\n", cid, hwq); + + /* It's useless: + * old code sssraid_reset_work_sync + * queue_work(reset_work) at first, + * then flush_work to synchronize. + */ + if (!sssraid_change_host_state(hdev, SSSRAID_RESETTING)) { + ioc_info(hdev, "can't change to reset state\n"); + return FAILED; + } + if (sssraid_soft_reset_handler(hdev)) { + ioc_warn(hdev, "cid[%d] qidx[%d] host reset failed\n", cid, hwq); + return FAILED; + } + + ioc_warn(hdev, "cid[%d] qidx[%d] host reset success\n", cid, hwq); + + return SUCCESS; +} + +/* host_reset call back */ +static int sssraid_sysfs_host_reset(struct Scsi_Host *shost, int reset_type) +{ + int ret; + struct sssraid_dev *hdev = shost_priv(shost); + + ioc_info(hdev, "start sysfs host reset cmd\n"); + if (!sssraid_change_host_state(hdev, SSSRAID_RESETTING)) { + ioc_info(hdev, "can't change to reset state\n"); + return -EBUSY; + } + ret = sssraid_soft_reset_handler(hdev); + ioc_info(hdev, "stop sysfs host reset cmd[%d]\n", ret); + + return ret; +} + +/* queuecommand call back */ +static int sssraid_qcmd(struct Scsi_Host *shost, + struct scsi_cmnd *scmd) +{ + struct sssraid_iod *iod = scsi_cmd_priv(scmd); + struct sssraid_dev *hdev = shost_priv(shost); + struct scsi_device *sdev = scmd->device; + struct sssraid_sdev_hostdata *hostdata = sdev->hostdata; + u16 hwq, cid; + struct sssraid_squeue *sq; + struct sssraid_ioq_command ioq_cmd; + int retval; + + if (unlikely(hdev->state == SSSRAID_RESETTING)) + return SCSI_MLQUEUE_HOST_BUSY; + + if (unlikely(hdev->state != SSSRAID_LIVE)) { + set_host_byte(scmd, DID_NO_CONNECT); + scmd->scsi_done(scmd); + return 0; + } + + if (unlikely(hdev->logging_level & SSSRAID_DEBUG)) + scsi_print_command(scmd); + + sssraid_get_tag_from_scmd(scmd, &hwq, &cid); + hostdata = sdev->hostdata; + sq = &hdev->sqinfo[hwq]; + + memset(&ioq_cmd, 0, sizeof(ioq_cmd)); + ioq_cmd.rw.hdid = cpu_to_le32(hostdata->hdid); + ioq_cmd.rw.command_id = cpu_to_le16(cid); + + retval = sssraid_setup_ioq_cmd(hdev, &ioq_cmd, scmd); + if (unlikely(retval)) { + set_host_byte(scmd, DID_ERROR); + scmd->scsi_done(scmd); + return 0; + } + + iod->sense = sq->sense + retval; + iod->sense_dma = sq->sense_dma_addr + retval; + ioq_cmd.common.sense_addr = cpu_to_le64(iod->sense_dma); + ioq_cmd.common.sense_len = cpu_to_le16(SCSI_SENSE_BUFFERSIZE); + + sssraid_init_iod(iod); + + iod->sqinfo = sq; + sssraid_io_map_data(hdev, iod, scmd, &ioq_cmd); + if (unlikely(retval)) { + ioc_err(hdev, "sssraid_io_map_data Err.\n"); + set_host_byte(scmd, DID_ERROR); + scmd->scsi_done(scmd); + retval = 0; + goto deinit_iod; + } + + WRITE_ONCE(iod->state, SSSRAID_CMD_IN_FLIGHT); + sssraid_submit_cmd(sq, &ioq_cmd); + + return 0; + +deinit_iod: + sssraid_free_iod_res(hdev, iod); + return retval; +} + +/* change_queue_depth call back: + * keep as old + */ + +/* slave_configure call back */ +static int sssraid_slave_configure(struct scsi_device *sdev) +{ + int qd = MAX_CMD_PER_DEV; + unsigned int timeout = scmd_tmout_rawdisk * HZ; + struct sssraid_dev *hdev = shost_priv(sdev->host); + struct sssraid_sdev_hostdata *hostdata = sdev->hostdata; + u32 max_sec = sdev->host->max_sectors; + + if (hostdata) { + if (SSSRAID_DEV_INFO_ATTR_VD(hostdata->attr)) + timeout = scmd_tmout_vd * HZ; + else if (SSSRAID_DEV_INFO_ATTR_RAWDISK(hostdata->attr)) + timeout = scmd_tmout_rawdisk * HZ; + max_sec = hostdata->max_io_kb << 1; + qd = sssraid_get_qd_by_disk(hostdata->attr); + } else { + ioc_err(hdev, "err, sdev->hostdata is null\n"); + } + + blk_queue_rq_timeout(sdev->request_queue, timeout); + sdev->eh_timeout = timeout; + scsi_change_queue_depth(sdev, qd); + + if ((max_sec == 0) || (max_sec > sdev->host->max_sectors)) + max_sec = sdev->host->max_sectors; + + blk_queue_max_hw_sectors(sdev->request_queue, max_sec); + + ioc_info(hdev, "sdev->channel:id:lun[%d:%d:%lld], scmd_timeout[%d]s, maxsec[%d]\n", + sdev->channel, sdev->id, sdev->lun, timeout / HZ, max_sec); + + return 0; +} + +/* slave_alloc call back */ +static int sssraid_slave_alloc(struct scsi_device *sdev) +{ + struct sssraid_sdev_hostdata *hostdata; + struct sssraid_dev *hdev; + u16 idx; + + hdev = shost_priv(sdev->host); + hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); + if (!hostdata) { + ioc_err(hdev, "Alloc scsi host data memory failed\n"); + return -ENOMEM; + } + + down_read(&hdev->devices_rwsem); + for (idx = 0; idx < le32_to_cpu(hdev->ctrl_info->nd); idx++) { + if (sssraid_match_dev(hdev, idx, sdev)) + goto scan_host; + } + up_read(&hdev->devices_rwsem); + + kfree(hostdata); + return -ENXIO; + +scan_host: + hostdata->hdid = le32_to_cpu(hdev->devices[idx].hdid); + hostdata->max_io_kb = le16_to_cpu(hdev->devices[idx].max_io_kb); + hostdata->attr = hdev->devices[idx].attr; + hostdata->flag = hdev->devices[idx].flag; + hostdata->rg_id = 0xff; + sdev->hostdata = hostdata; + up_read(&hdev->devices_rwsem); + return 0; +} + +/* slave_destroy call back */ +static void sssraid_slave_destroy(struct scsi_device *sdev) +{ + kfree(sdev->hostdata); + sdev->hostdata = NULL; +} + +/* eh_timed_out call back */ +static enum blk_eh_timer_return sssraid_scmd_timeout(struct scsi_cmnd *scmd) +{ + struct sssraid_iod *iod = scsi_cmd_priv(scmd); + unsigned int timeout = scmd->device->request_queue->rq_timeout; + + if (sssraid_check_scmd_completed(scmd)) + goto out; + + if (time_after(jiffies, scmd->jiffies_at_alloc + timeout)) { + if (cmpxchg(&iod->state, SSSRAID_CMD_IN_FLIGHT, SSSRAID_CMD_TIMEOUT) == + SSSRAID_CMD_IN_FLIGHT) { + return BLK_EH_DONE; + } + } +out: + return BLK_EH_RESET_TIMER; +} + +/* eh_abort_handler call back */ +static int sssraid_abort_handler(struct scsi_cmnd *scmd) +{ + struct sssraid_dev *hdev = shost_priv(scmd->device->host); + struct sssraid_iod *iod = scsi_cmd_priv(scmd); + struct sssraid_sdev_hostdata *hostdata; + u16 hwq, cid; + int ret; + + scsi_print_command(scmd); + + if (hdev->state != SSSRAID_LIVE || !sssraid_wait_abnl_cmd_done(iod) || + sssraid_check_scmd_completed(scmd)) + return SUCCESS; + + hostdata = scmd->device->hostdata; + sssraid_get_tag_from_scmd(scmd, &hwq, &cid); + + ioc_warn(hdev, "cid[%d] qidx[%d] timeout, aborting\n", cid, hwq); + ret = sssraid_send_abort_cmd(hdev, hostdata->hdid, hwq, cid); + if (ret != -ETIME) { + ret = sssraid_wait_abnl_cmd_done(iod); + if (ret) { + ioc_warn(hdev, "cid[%d] qidx[%d] abort failed, not found\n", cid, hwq); + return FAILED; + } + ioc_warn(hdev, "cid[%d] qidx[%d] abort succ\n", cid, hwq); + return SUCCESS; + } + ioc_warn(hdev, "cid[%d] qidx[%d] abort failed, timeout\n", cid, hwq); + return FAILED; +} + +static ssize_t csts_pp_show(struct device *cdev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sssraid_dev *hdev = shost_priv(shost); + int ret = -1; + + if (pci_device_is_present(hdev->pdev)) { + ret = (readl(hdev->bar + SSSRAID_REG_CSTS) & SSSRAID_CSTS_PP_MASK); + ret >>= SSSRAID_CSTS_PP_SHIFT; + } + + return snprintf(buf, PAGE_SIZE, "%d\n", ret); +} + +static ssize_t csts_shst_show(struct device *cdev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sssraid_dev *hdev = shost_priv(shost); + int ret = -1; + + if (pci_device_is_present(hdev->pdev)) { + ret = (readl(hdev->bar + SSSRAID_REG_CSTS) & SSSRAID_CSTS_SHST_MASK); + ret >>= SSSRAID_CSTS_SHST_SHIFT; + } + + return snprintf(buf, PAGE_SIZE, "%d\n", ret); +} + +static ssize_t csts_cfs_show(struct device *cdev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sssraid_dev *hdev = shost_priv(shost); + int ret = -1; + + if (pci_device_is_present(hdev->pdev)) { + ret = (readl(hdev->bar + SSSRAID_REG_CSTS) & SSSRAID_CSTS_CFS_MASK); + ret >>= SSSRAID_CSTS_CFS_SHIFT; + } + + return snprintf(buf, PAGE_SIZE, "%d\n", ret); +} + +static ssize_t csts_rdy_show(struct device *cdev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sssraid_dev *hdev = shost_priv(shost); + int ret = -1; + + if (pci_device_is_present(hdev->pdev)) + ret = (readl(hdev->bar + SSSRAID_REG_CSTS) & SSSRAID_CSTS_RDY); + + return snprintf(buf, PAGE_SIZE, "%d\n", ret); +} + +static ssize_t fw_version_show(struct device *cdev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sssraid_dev *hdev = shost_priv(shost); + + return snprintf(buf, PAGE_SIZE, "%s\n", hdev->ctrl_info->fr); +} + +static DEVICE_ATTR_RO(csts_pp); +static DEVICE_ATTR_RO(csts_shst); +static DEVICE_ATTR_RO(csts_cfs); +static DEVICE_ATTR_RO(csts_rdy); +static DEVICE_ATTR_RO(fw_version); + +static struct device_attribute *sssraid_host_attrs[] = { + &dev_attr_csts_pp, + &dev_attr_csts_shst, + &dev_attr_csts_cfs, + &dev_attr_csts_rdy, + &dev_attr_fw_version, + NULL, +}; + +static int sssraid_get_vd_info(struct sssraid_dev *hdev, struct sssraid_vd_info *vd_info, u16 vid) +{ + struct sssraid_admin_command admin_cmd; + u8 *data_ptr = NULL; + dma_addr_t data_dma = 0; + int ret; + + if (hdev->state >= SSSRAID_RESETTING) { + ioc_err(hdev, "err, host state[%d] is not right\n", hdev->state); + return -EBUSY; + } + + data_ptr = dma_alloc_coherent(&hdev->pdev->dev, PAGE_SIZE, &data_dma, GFP_KERNEL); + if (!data_ptr) + return -ENOMEM; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.usr_cmd.opcode = USR_CMD_READ; + admin_cmd.usr_cmd.info_0.subopcode = cpu_to_le16(USR_CMD_VDINFO); + admin_cmd.usr_cmd.info_1.data_len = cpu_to_le16(USR_CMD_RDLEN); + admin_cmd.usr_cmd.info_1.param_len = cpu_to_le16(VDINFO_PARAM_LEN); + admin_cmd.usr_cmd.cdw10 = cpu_to_le32(vid); + admin_cmd.common.dptr.prp1 = cpu_to_le64(data_dma); + + ret = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); + if (!ret) + memcpy(vd_info, data_ptr, sizeof(struct sssraid_vd_info)); + + dma_free_coherent(&hdev->pdev->dev, PAGE_SIZE, data_ptr, data_dma); + + return ret; +} + +static int sssraid_get_bgtask(struct sssraid_dev *hdev, struct sssraid_bgtask *bgtask) +{ + struct sssraid_admin_command admin_cmd; + u8 *data_ptr = NULL; + dma_addr_t data_dma = 0; + int ret; + + if (hdev->state >= SSSRAID_RESETTING) { + ioc_err(hdev, "err, host state[%d] is not right\n", hdev->state); + return -EBUSY; + } + + data_ptr = dma_alloc_coherent(&hdev->pdev->dev, PAGE_SIZE, &data_dma, GFP_KERNEL); + if (!data_ptr) + return -ENOMEM; + + memset(&admin_cmd, 0, sizeof(admin_cmd)); + admin_cmd.usr_cmd.opcode = USR_CMD_READ; + admin_cmd.usr_cmd.info_0.subopcode = cpu_to_le16(USR_CMD_BGTASK); + admin_cmd.usr_cmd.info_1.data_len = cpu_to_le16(USR_CMD_RDLEN); + admin_cmd.common.dptr.prp1 = cpu_to_le64(data_dma); + + ret = sssraid_submit_admin_sync_cmd(hdev, &admin_cmd, NULL, NULL, 0); + if (!ret) + memcpy(bgtask, data_ptr, sizeof(struct sssraid_bgtask)); + + dma_free_coherent(&hdev->pdev->dev, PAGE_SIZE, data_ptr, data_dma); + + return ret; +} + +static ssize_t raid_level_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev; + struct sssraid_dev *hdev; + struct sssraid_vd_info *vd_info; + struct sssraid_sdev_hostdata *hostdata; + int ret; + + sdev = to_scsi_device(dev); + hdev = shost_priv(sdev->host); + hostdata = sdev->hostdata; + + vd_info = kmalloc(sizeof(*vd_info), GFP_KERNEL); + if (!vd_info || !SSSRAID_DEV_INFO_ATTR_VD(hostdata->attr)) + return snprintf(buf, PAGE_SIZE, "NA\n"); + + ret = sssraid_get_vd_info(hdev, vd_info, sdev->id); + if (ret) + vd_info->rg_level = ARRAY_SIZE(raid_levels) - 1; + + ret = (vd_info->rg_level < ARRAY_SIZE(raid_levels)) ? + vd_info->rg_level : (ARRAY_SIZE(raid_levels) - 1); + + kfree(vd_info); + + return snprintf(buf, PAGE_SIZE, "RAID-%s\n", raid_levels[ret]); +} + +static ssize_t raid_state_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev; + struct sssraid_dev *hdev; + struct sssraid_vd_info *vd_info; + struct sssraid_sdev_hostdata *hostdata; + int ret; + + sdev = to_scsi_device(dev); + hdev = shost_priv(sdev->host); + hostdata = sdev->hostdata; + + vd_info = kmalloc(sizeof(*vd_info), GFP_KERNEL); + if (!vd_info || !SSSRAID_DEV_INFO_ATTR_VD(hostdata->attr)) + return snprintf(buf, PAGE_SIZE, "NA\n"); + + ret = sssraid_get_vd_info(hdev, vd_info, sdev->id); + if (ret) { + vd_info->vd_status = 0; + vd_info->rg_id = 0xff; + } + + ret = (vd_info->vd_status < ARRAY_SIZE(raid_states)) ? vd_info->vd_status : 0; + + kfree(vd_info); + + return snprintf(buf, PAGE_SIZE, "%s\n", raid_states[ret]); +} + +static ssize_t raid_resync_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev; + struct sssraid_dev *hdev; + struct sssraid_vd_info *vd_info; + struct sssraid_bgtask *bgtask; + struct sssraid_sdev_hostdata *hostdata; + u8 rg_id, i, progress = 0; + int ret; + + sdev = to_scsi_device(dev); + hdev = shost_priv(sdev->host); + hostdata = sdev->hostdata; + + vd_info = kmalloc(sizeof(*vd_info), GFP_KERNEL); + if (!vd_info || !SSSRAID_DEV_INFO_ATTR_VD(hostdata->attr)) + return snprintf(buf, PAGE_SIZE, "NA\n"); + + ret = sssraid_get_vd_info(hdev, vd_info, sdev->id); + if (ret) + goto out; + + rg_id = vd_info->rg_id; + + bgtask = (struct sssraid_bgtask *)vd_info; + ret = sssraid_get_bgtask(hdev, bgtask); + if (ret) + goto out; + for (i = 0; i < bgtask->task_num; i++) { + if ((bgtask->bgtask[i].type == BGTASK_TYPE_REBUILD) && + (le16_to_cpu(bgtask->bgtask[i].vd_id) == rg_id)) + progress = bgtask->bgtask[i].progress; + } + +out: + kfree(vd_info); + return snprintf(buf, PAGE_SIZE, "%d\n", progress); +} + +static DEVICE_ATTR_RO(raid_level); +static DEVICE_ATTR_RO(raid_state); +static DEVICE_ATTR_RO(raid_resync); + +static struct device_attribute *sssraid_dev_attrs[] = { + &dev_attr_raid_level, + &dev_attr_raid_state, + &dev_attr_raid_resync, + NULL, +}; + +static struct scsi_host_template sssraid_driver_template = { + .module = THIS_MODULE, + .name = "3SNIC Logic sssraid driver", + .proc_name = "sssraid", + .queuecommand = sssraid_qcmd, + .slave_alloc = sssraid_slave_alloc, + .slave_destroy = sssraid_slave_destroy, + .slave_configure = sssraid_slave_configure, + .scan_finished = sssraid_scan_finished, + .eh_timed_out = sssraid_scmd_timeout, + .eh_abort_handler = sssraid_abort_handler, + .eh_target_reset_handler = sssraid_eh_target_reset, + .eh_bus_reset_handler = sssraid_bus_reset_handler, + .eh_host_reset_handler = sssraid_eh_host_reset, + .change_queue_depth = scsi_change_queue_depth, + .host_tagset = 0, + .this_id = -1, + .unchecked_isa_dma = 0, + .shost_attrs = sssraid_host_attrs, + .sdev_attrs = sssraid_dev_attrs, + .host_reset = sssraid_sysfs_host_reset, +}; + +/** + * sssraid_probe - PCI probe callback + * @pdev: PCI device instance + * @id: PCI device ID details + * + * controller initialization routine. + * Allocate per adapter instance through shost_priv and + * initialize controller specific data structures, initializae + * the controller hardware, add shost to the SCSI subsystem. + * + * Return: 0 on success, non-zero on failure. + */ + +static int +sssraid_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct sssraid_dev *hdev; + struct Scsi_Host *shost; + int node; + char bsg_name[15]; + int retval = 0; + + node = dev_to_node(&pdev->dev); + if (node == NUMA_NO_NODE) { + node = first_memory_node; + set_dev_node(&pdev->dev, node); + } + + shost = scsi_host_alloc(&sssraid_driver_template, sizeof(*hdev)); + if (!shost) { + retval = -ENODEV; + ioc_err(hdev, "Failed to allocate scsi host\n"); + goto shost_failed; + } + + hdev = shost_priv(shost); + hdev->numa_node = node; + hdev->instance = shost->host_no; /* for device instance */ + sprintf(hdev->name, "%s%d", SSSRAID_DRIVER_NAME, hdev->instance); + + init_rwsem(&hdev->devices_rwsem); + spin_lock_init(&hdev->state_lock); + + spin_lock_init(&hdev->fwevt_lock); + spin_lock_init(&hdev->watchdog_lock); + + INIT_LIST_HEAD(&hdev->fwevt_list); + +// logging_level = 1; //garden test + hdev->logging_level = logging_level; /* according to log_debug_switch*/ + + snprintf(hdev->fwevt_worker_name, sizeof(hdev->fwevt_worker_name), + "%s%d_fwevt_wrkr", SSSRAID_DRIVER_NAME, hdev->instance); + hdev->fwevt_worker_thread = alloc_ordered_workqueue( + hdev->fwevt_worker_name, WQ_MEM_RECLAIM); + if (!hdev->fwevt_worker_thread) { + ioc_err(hdev, "failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + retval = -ENODEV; + goto out_fwevtthread_failed; + } + + hdev->shost = shost; + hdev->pdev = pdev; + + if (sssraid_init_ioc(hdev, 0)) { + ioc_err(hdev, "failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + retval = -ENODEV; + goto out_iocinit_failed; + } + + sssraid_shost_init(hdev); + + retval = scsi_add_host(shost, &pdev->dev); + if (retval) { + ioc_err(hdev, "failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + goto addhost_failed; + } + + snprintf(bsg_name, sizeof(bsg_name), "%s%d", SSSRAID_DRIVER_NAME, shost->host_no); + hdev->bsg_queue = bsg_setup_queue(&shost->shost_gendev, bsg_name, + sssraid_bsg_host_dispatch, NULL, sssraid_cmd_size(hdev)); + if (IS_ERR(hdev->bsg_queue)) { + ioc_err(hdev, "err, setup bsg failed\n"); + hdev->bsg_queue = NULL; + goto bsg_setup_failed; + } + + sssraid_change_host_state(hdev, SSSRAID_LIVE); + + scsi_scan_host(shost); + return retval; + +bsg_setup_failed: + scsi_remove_host(shost); +addhost_failed: + sssraid_cleanup_ioc(hdev, 0); +out_iocinit_failed: + destroy_workqueue(hdev->fwevt_worker_thread); +out_fwevtthread_failed: + scsi_host_put(shost); +shost_failed: + return retval; +} + +static void sssraid_remove(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + + if (!shost) + return; + + ioc_info(hdev, "enter sssraid remove\n"); + + hdev = shost_priv(shost); + + sssraid_change_host_state(hdev, SSSRAID_DELETING); + + if (!pci_device_is_present(pdev)) + sssraid_back_all_io(hdev); + + sssraid_cleanup_fwevt_list(hdev); + destroy_workqueue(hdev->fwevt_worker_thread); + + sssraid_remove_bsg(hdev); + scsi_remove_host(shost); + sssraid_cleanup_ioc(hdev, 0); + + scsi_host_put(shost); +} + +static void sssraid_shutdown(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + + if (!shost) + return; + + hdev = shost_priv(shost); + + sssraid_cleanup_fwevt_list(hdev); + destroy_workqueue(hdev->fwevt_worker_thread); + sssraid_cleanup_ioc(hdev, 0); +} + +#ifdef CONFIG_PM +static int sssraid_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + pci_power_t device_state; + + if (!shost) + return 0; + + hdev = shost_priv(shost); + + while (hdev->state == SSSRAID_RESETTING) + ssleep(1); + sssraid_cleanup_fwevt_list(hdev); + scsi_block_requests(shost); + sssraid_cleanup_ioc(hdev, 1); + + device_state = pci_choose_state(pdev, state); + pci_save_state(pdev); + pci_set_power_state(pdev, device_state); + + return 0; +} + +static int sssraid_resume(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + pci_power_t device_state = pdev->current_state; + + if (!shost) + return 0; + + hdev = shost_priv(shost); + + ioc_info(hdev, "pdev=0x%p, slot=%s, previous operating state [D%d]\n", + pdev, pci_name(pdev), device_state); + pci_set_power_state(pdev, PCI_D0); + pci_enable_wake(pdev, PCI_D0, 0); + pci_restore_state(pdev); + hdev->pdev = pdev; + hdev->cpu_count = num_online_cpus(); + + /* sssraid_setup_resources in sssraid_init_ioc */ + sssraid_init_ioc(hdev, 1); + scsi_unblock_requests(shost); + + return 0; +} +#endif + +static pci_ers_result_t sssraid_pci_error_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + + if (!shost) + return PCI_ERS_RESULT_NONE; + + hdev = shost_priv(shost); + + ioc_info(hdev, "enter pci error detect, state:%d\n", state); + + switch (state) { + case pci_channel_io_normal: + ioc_warn(hdev, "channel is normal, do nothing\n"); + + return PCI_ERS_RESULT_CAN_RECOVER; + case pci_channel_io_frozen: + ioc_warn(hdev, "channel io frozen, need reset controller\n"); + + scsi_block_requests(hdev->shost); + + sssraid_change_host_state(hdev, SSSRAID_RESETTING); + + return PCI_ERS_RESULT_NEED_RESET; + case pci_channel_io_perm_failure: + ioc_warn(hdev, "channel io failure, request disconnect\n"); + + return PCI_ERS_RESULT_DISCONNECT; + } + + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t sssraid_pci_slot_reset(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + + if (!shost) + return PCI_ERS_RESULT_NONE; + + hdev = shost_priv(shost); + + ioc_info(hdev, "restart after slot reset\n"); + + pci_restore_state(pdev); + + sssraid_soft_reset_handler(hdev); + + scsi_unblock_requests(hdev->shost); + + return PCI_ERS_RESULT_RECOVERED; +} + +static void sssraid_reset_done(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct sssraid_dev *hdev; + + if (!shost) + return; + + hdev = shost_priv(shost); + + ioc_info(hdev, "enter sssraid reset done\n"); +} + +static struct pci_error_handlers sssraid_err_handler = { + .error_detected = sssraid_pci_error_detected, + .slot_reset = sssraid_pci_slot_reset, + .reset_done = sssraid_reset_done, +}; + +static const struct pci_device_id sssraid_pci_id_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_3SNIC_LOGIC, SSSRAID_SERVER_DEVICE_HBA_DID) }, + { PCI_DEVICE(PCI_VENDOR_ID_3SNIC_LOGIC, SSSRAID_SERVER_DEVICE_RAID_DID) }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, sssraid_pci_id_table); + +static struct pci_driver sssraid_pci_driver = { + .name = SSSRAID_DRIVER_NAME, + .id_table = sssraid_pci_id_table, + .probe = sssraid_probe, + .remove = sssraid_remove, + .shutdown = sssraid_shutdown, +#ifdef CONFIG_PM + .suspend = sssraid_suspend, + .resume = sssraid_resume, +#endif + .err_handler = &sssraid_err_handler, +}; + +static int __init sssraid_init(void) +{ + int ret_val; + + pr_info("Loading %s version %s\n", SSSRAID_DRIVER_NAME, + SSSRAID_DRIVER_VERSION); + + sssraid_class = class_create(THIS_MODULE, "sssraid"); + if (IS_ERR(sssraid_class)) { + ret_val = PTR_ERR(sssraid_class); + return ret_val; + } + + ret_val = pci_register_driver(&sssraid_pci_driver); + + return ret_val; +} + +static void __exit sssraid_exit(void) +{ + pr_info("Unloading %s version %s\n", SSSRAID_DRIVER_NAME, + SSSRAID_DRIVER_VERSION); + + class_destroy(sssraid_class); + pci_unregister_driver(&sssraid_pci_driver); +} + +MODULE_AUTHOR("liangry1@3snic.com"); +MODULE_DESCRIPTION("3SNIC Information Technology SSSRAID Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(SSSRAID_DRIVER_VERSION); +module_init(sssraid_init); +module_exit(sssraid_exit);