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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef MMC_QUEUE_H3#define MMC_QUEUE_H4 5#include <linux/types.h>6#include <linux/blkdev.h>7#include <linux/blk-mq.h>8#include <linux/mmc/core.h>9#include <linux/mmc/host.h>10 11enum mmc_issued {12 MMC_REQ_STARTED,13 MMC_REQ_BUSY,14 MMC_REQ_FAILED_TO_START,15 MMC_REQ_FINISHED,16};17 18enum mmc_issue_type {19 MMC_ISSUE_SYNC,20 MMC_ISSUE_DCMD,21 MMC_ISSUE_ASYNC,22 MMC_ISSUE_MAX,23};24 25static inline struct mmc_queue_req *req_to_mmc_queue_req(struct request *rq)26{27 return blk_mq_rq_to_pdu(rq);28}29 30struct mmc_queue_req;31 32static inline struct request *mmc_queue_req_to_req(struct mmc_queue_req *mqr)33{34 return blk_mq_rq_from_pdu(mqr);35}36 37struct mmc_blk_data;38struct mmc_blk_ioc_data;39 40struct mmc_blk_request {41 struct mmc_request mrq;42 struct mmc_command sbc;43 struct mmc_command cmd;44 struct mmc_command stop;45 struct mmc_data data;46};47 48/**49 * enum mmc_drv_op - enumerates the operations in the mmc_queue_req50 * @MMC_DRV_OP_IOCTL: ioctl operation51 * @MMC_DRV_OP_IOCTL_RPMB: RPMB-oriented ioctl operation52 * @MMC_DRV_OP_BOOT_WP: write protect boot partitions53 * @MMC_DRV_OP_GET_CARD_STATUS: get card status54 * @MMC_DRV_OP_GET_EXT_CSD: get the EXT CSD from an eMMC card55 */56enum mmc_drv_op {57 MMC_DRV_OP_IOCTL,58 MMC_DRV_OP_IOCTL_RPMB,59 MMC_DRV_OP_BOOT_WP,60 MMC_DRV_OP_GET_CARD_STATUS,61 MMC_DRV_OP_GET_EXT_CSD,62};63 64struct mmc_queue_req {65 struct mmc_blk_request brq;66 struct scatterlist *sg;67 enum mmc_drv_op drv_op;68 int drv_op_result;69 void *drv_op_data;70 unsigned int ioc_count;71 int retries;72};73 74struct mmc_queue {75 struct mmc_card *card;76 struct mmc_ctx ctx;77 struct blk_mq_tag_set tag_set;78 struct mmc_blk_data *blkdata;79 struct request_queue *queue;80 spinlock_t lock;81 int in_flight[MMC_ISSUE_MAX];82 unsigned int cqe_busy;83#define MMC_CQE_DCMD_BUSY BIT(0)84 bool busy;85 bool recovery_needed;86 bool in_recovery;87 bool rw_wait;88 bool waiting;89 struct work_struct recovery_work;90 wait_queue_head_t wait;91 struct request *recovery_req;92 struct request *complete_req;93 struct mutex complete_lock;94 struct work_struct complete_work;95};96 97struct gendisk *mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,98 unsigned int features);99extern void mmc_cleanup_queue(struct mmc_queue *);100extern void mmc_queue_suspend(struct mmc_queue *);101extern void mmc_queue_resume(struct mmc_queue *);102extern unsigned int mmc_queue_map_sg(struct mmc_queue *,103 struct mmc_queue_req *);104 105void mmc_cqe_check_busy(struct mmc_queue *mq);106void mmc_cqe_recovery_notifier(struct mmc_request *mrq);107 108enum mmc_issue_type mmc_issue_type(struct mmc_queue *mq, struct request *req);109 110static inline int mmc_tot_in_flight(struct mmc_queue *mq)111{112 return mq->in_flight[MMC_ISSUE_SYNC] +113 mq->in_flight[MMC_ISSUE_DCMD] +114 mq->in_flight[MMC_ISSUE_ASYNC];115}116 117static inline int mmc_cqe_qcnt(struct mmc_queue *mq)118{119 return mq->in_flight[MMC_ISSUE_DCMD] +120 mq->in_flight[MMC_ISSUE_ASYNC];121}122 123#endif124