diff options
Diffstat (limited to 'drivers/ufs/core/ufshpb.h')
| -rw-r--r-- | drivers/ufs/core/ufshpb.h | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/drivers/ufs/core/ufshpb.h b/drivers/ufs/core/ufshpb.h deleted file mode 100644 index b428bbdd2799..000000000000 --- a/drivers/ufs/core/ufshpb.h +++ /dev/null @@ -1,318 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Universal Flash Storage Host Performance Booster - * - * Copyright (C) 2017-2021 Samsung Electronics Co., Ltd. - * - * Authors: - * Yongmyung Lee <ymhungry.lee@samsung.com> - * Jinyoung Choi <j-young.choi@samsung.com> - */ - -#ifndef _UFSHPB_H_ -#define _UFSHPB_H_ - -/* hpb response UPIU macro */ -#define HPB_RSP_NONE 0x0 -#define HPB_RSP_REQ_REGION_UPDATE 0x1 -#define HPB_RSP_DEV_RESET 0x2 -#define MAX_ACTIVE_NUM 2 -#define MAX_INACTIVE_NUM 2 -#define DEV_DATA_SEG_LEN 0x14 -#define DEV_SENSE_SEG_LEN 0x12 -#define DEV_DES_TYPE 0x80 -#define DEV_ADDITIONAL_LEN 0x10 - -/* hpb map & entries macro */ -#define HPB_RGN_SIZE_UNIT 512 -#define HPB_ENTRY_BLOCK_SIZE SZ_4K -#define HPB_ENTRY_SIZE 0x8 -#define PINNED_NOT_SET U32_MAX - -/* hpb support chunk size */ -#define HPB_LEGACY_CHUNK_HIGH 1 -#define HPB_MULTI_CHUNK_HIGH 255 - -/* hpb vender defined opcode */ -#define UFSHPB_READ 0xF8 -#define UFSHPB_READ_BUFFER 0xF9 -#define UFSHPB_READ_BUFFER_ID 0x01 -#define UFSHPB_WRITE_BUFFER 0xFA -#define UFSHPB_WRITE_BUFFER_INACT_SINGLE_ID 0x01 -#define UFSHPB_WRITE_BUFFER_PREFETCH_ID 0x02 -#define UFSHPB_WRITE_BUFFER_INACT_ALL_ID 0x03 -#define HPB_WRITE_BUFFER_CMD_LENGTH 10 -#define MAX_HPB_READ_ID 0x7F -#define HPB_READ_BUFFER_CMD_LENGTH 10 -#define LU_ENABLED_HPB_FUNC 0x02 - -#define HPB_RESET_REQ_RETRIES 10 -#define HPB_MAP_REQ_RETRIES 5 -#define HPB_REQUEUE_TIME_MS 0 - -#define HPB_SUPPORT_VERSION 0x200 -#define HPB_SUPPORT_LEGACY_VERSION 0x100 - -enum UFSHPB_MODE { - HPB_HOST_CONTROL, - HPB_DEVICE_CONTROL, -}; - -enum UFSHPB_STATE { - HPB_INIT, - HPB_PRESENT, - HPB_SUSPEND, - HPB_FAILED, - HPB_RESET, -}; - -enum HPB_RGN_STATE { - HPB_RGN_INACTIVE, - HPB_RGN_ACTIVE, - /* pinned regions are always active */ - HPB_RGN_PINNED, -}; - -enum HPB_SRGN_STATE { - HPB_SRGN_UNUSED, - HPB_SRGN_INVALID, - HPB_SRGN_VALID, - HPB_SRGN_ISSUED, -}; - -/** - * struct ufshpb_lu_info - UFSHPB logical unit related info - * @num_blocks: the number of logical block - * @pinned_start: the start region number of pinned region - * @num_pinned: the number of pinned regions - * @max_active_rgns: maximum number of active regions - */ -struct ufshpb_lu_info { - int num_blocks; - int pinned_start; - int num_pinned; - int max_active_rgns; -}; - -struct ufshpb_map_ctx { - struct page **m_page; - unsigned long *ppn_dirty; -}; - -struct ufshpb_subregion { - struct ufshpb_map_ctx *mctx; - enum HPB_SRGN_STATE srgn_state; - int rgn_idx; - int srgn_idx; - bool is_last; - - /* subregion reads - for host mode */ - unsigned int reads; - - /* below information is used by rsp_list */ - struct list_head list_act_srgn; -}; - -struct ufshpb_region { - struct ufshpb_lu *hpb; - struct ufshpb_subregion *srgn_tbl; - enum HPB_RGN_STATE rgn_state; - int rgn_idx; - int srgn_cnt; - - /* below information is used by rsp_list */ - struct list_head list_inact_rgn; - - /* below information is used by lru */ - struct list_head list_lru_rgn; - unsigned long rgn_flags; -#define RGN_FLAG_DIRTY 0 -#define RGN_FLAG_UPDATE 1 - - /* region reads - for host mode */ - spinlock_t rgn_lock; - unsigned int reads; - /* region "cold" timer - for host mode */ - ktime_t read_timeout; - unsigned int read_timeout_expiries; - struct list_head list_expired_rgn; -}; - -#define for_each_sub_region(rgn, i, srgn) \ - for ((i) = 0; \ - ((i) < (rgn)->srgn_cnt) && ((srgn) = &(rgn)->srgn_tbl[i]); \ - (i)++) - -/** - * struct ufshpb_req - HPB related request structure (write/read buffer) - * @req: block layer request structure - * @bio: bio for this request - * @hpb: ufshpb_lu structure that related to - * @list_req: ufshpb_req mempool list - * @sense: store its sense data - * @mctx: L2P map information - * @rgn_idx: target region index - * @srgn_idx: target sub-region index - * @lun: target logical unit number - * @m_page: L2P map information data for pre-request - * @len: length of host-side cached L2P map in m_page - * @lpn: start LPN of L2P map in m_page - */ -struct ufshpb_req { - struct request *req; - struct bio *bio; - struct ufshpb_lu *hpb; - struct list_head list_req; - union { - struct { - struct ufshpb_map_ctx *mctx; - unsigned int rgn_idx; - unsigned int srgn_idx; - unsigned int lun; - } rb; - struct { - struct page *m_page; - unsigned int len; - unsigned long lpn; - } wb; - }; -}; - -struct victim_select_info { - struct list_head lh_lru_rgn; /* LRU list of regions */ - int max_lru_active_cnt; /* supported hpb #region - pinned #region */ - atomic_t active_cnt; -}; - -/** - * ufshpb_params - ufs hpb parameters - * @requeue_timeout_ms - requeue threshold of wb command (0x2) - * @activation_thld - min reads [IOs] to activate/update a region - * @normalization_factor - shift right the region's reads - * @eviction_thld_enter - min reads [IOs] for the entering region in eviction - * @eviction_thld_exit - max reads [IOs] for the exiting region in eviction - * @read_timeout_ms - timeout [ms] from the last read IO to the region - * @read_timeout_expiries - amount of allowable timeout expireis - * @timeout_polling_interval_ms - frequency in which timeouts are checked - * @inflight_map_req - number of inflight map requests - */ -struct ufshpb_params { - unsigned int requeue_timeout_ms; - unsigned int activation_thld; - unsigned int normalization_factor; - unsigned int eviction_thld_enter; - unsigned int eviction_thld_exit; - unsigned int read_timeout_ms; - unsigned int read_timeout_expiries; - unsigned int timeout_polling_interval_ms; - unsigned int inflight_map_req; -}; - -struct ufshpb_stats { - u64 hit_cnt; - u64 miss_cnt; - u64 rcmd_noti_cnt; - u64 rcmd_active_cnt; - u64 rcmd_inactive_cnt; - u64 map_req_cnt; - u64 pre_req_cnt; - u64 umap_req_cnt; -}; - -struct ufshpb_lu { - int lun; - struct scsi_device *sdev_ufs_lu; - - spinlock_t rgn_state_lock; /* for protect rgn/srgn state */ - struct ufshpb_region *rgn_tbl; - - atomic_t hpb_state; - - spinlock_t rsp_list_lock; - struct list_head lh_act_srgn; /* hold rsp_list_lock */ - struct list_head lh_inact_rgn; /* hold rsp_list_lock */ - - /* pre request information */ - struct ufshpb_req *pre_req; - int num_inflight_pre_req; - int throttle_pre_req; - int num_inflight_map_req; /* hold param_lock */ - spinlock_t param_lock; - - struct list_head lh_pre_req_free; - int pre_req_max_tr_len; - - /* cached L2P map management worker */ - struct work_struct map_work; - - /* for selecting victim */ - struct victim_select_info lru_info; - struct work_struct ufshpb_normalization_work; - struct delayed_work ufshpb_read_to_work; - unsigned long work_data_bits; -#define TIMEOUT_WORK_RUNNING 0 - - /* pinned region information */ - u32 lu_pinned_start; - u32 lu_pinned_end; - - /* HPB related configuration */ - u32 rgns_per_lu; - u32 srgns_per_lu; - u32 last_srgn_entries; - int srgns_per_rgn; - u32 srgn_mem_size; - u32 entries_per_rgn_mask; - u32 entries_per_rgn_shift; - u32 entries_per_srgn; - u32 entries_per_srgn_mask; - u32 entries_per_srgn_shift; - u32 pages_per_srgn; - - bool is_hcm; - - struct ufshpb_stats stats; - struct ufshpb_params params; - - struct kmem_cache *map_req_cache; - struct kmem_cache *m_page_cache; - - struct list_head list_hpb_lu; -}; - -struct ufs_hba; -struct ufshcd_lrb; - -#ifndef CONFIG_SCSI_UFS_HPB -static int ufshpb_prep(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) { return 0; } -static void ufshpb_rsp_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) {} -static void ufshpb_resume(struct ufs_hba *hba) {} -static void ufshpb_suspend(struct ufs_hba *hba) {} -static void ufshpb_toggle_state(struct ufs_hba *hba, enum UFSHPB_STATE src, enum UFSHPB_STATE dest) {} -static void ufshpb_init(struct ufs_hba *hba) {} -static void ufshpb_init_hpb_lu(struct ufs_hba *hba, struct scsi_device *sdev) {} -static void ufshpb_destroy_lu(struct ufs_hba *hba, struct scsi_device *sdev) {} -static void ufshpb_remove(struct ufs_hba *hba) {} -static bool ufshpb_is_allowed(struct ufs_hba *hba) { return false; } -static void ufshpb_get_geo_info(struct ufs_hba *hba, u8 *geo_buf) {} -static void ufshpb_get_dev_info(struct ufs_hba *hba, u8 *desc_buf) {} -static bool ufshpb_is_legacy(struct ufs_hba *hba) { return false; } -#else -int ufshpb_prep(struct ufs_hba *hba, struct ufshcd_lrb *lrbp); -void ufshpb_rsp_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp); -void ufshpb_resume(struct ufs_hba *hba); -void ufshpb_suspend(struct ufs_hba *hba); -void ufshpb_toggle_state(struct ufs_hba *hba, enum UFSHPB_STATE src, enum UFSHPB_STATE dest); -void ufshpb_init(struct ufs_hba *hba); -void ufshpb_init_hpb_lu(struct ufs_hba *hba, struct scsi_device *sdev); -void ufshpb_destroy_lu(struct ufs_hba *hba, struct scsi_device *sdev); -void ufshpb_remove(struct ufs_hba *hba); -bool ufshpb_is_allowed(struct ufs_hba *hba); -void ufshpb_get_geo_info(struct ufs_hba *hba, u8 *geo_buf); -void ufshpb_get_dev_info(struct ufs_hba *hba, u8 *desc_buf); -bool ufshpb_is_legacy(struct ufs_hba *hba); -extern struct attribute_group ufs_sysfs_hpb_stat_group; -extern struct attribute_group ufs_sysfs_hpb_param_group; -#endif - -#endif /* End of Header */ |