102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
#ifndef MMC_QUEUE_H
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#define MMC_QUEUE_H
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#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH)
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struct request;
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struct task_struct;
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struct mmc_blk_request {
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struct mmc_request mrq;
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struct mmc_command sbc;
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struct mmc_command cmd;
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struct mmc_command stop;
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struct mmc_data data;
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};
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enum mmc_packed_type {
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MMC_PACKED_NONE = 0,
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MMC_PACKED_WRITE,
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};
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#define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE)
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#define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE)
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struct mmc_packed {
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struct list_head list;
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u32 cmd_hdr[1024];
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unsigned int blocks;
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u8 nr_entries;
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u8 retries;
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s16 idx_failure;
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};
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struct mmc_queue_req {
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struct request *req;
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struct mmc_blk_request brq;
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struct scatterlist *sg;
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char *bounce_buf;
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struct scatterlist *bounce_sg;
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unsigned int bounce_sg_len;
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struct mmc_async_req mmc_active;
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enum mmc_packed_type cmd_type;
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struct mmc_packed *packed;
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struct mmc_cmdq_req cmdq_req;
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};
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struct mmc_queue {
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struct mmc_card *card;
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struct task_struct *thread;
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struct semaphore thread_sem;
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unsigned long flags;
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#define MMC_QUEUE_SUSPENDED 0
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#define MMC_QUEUE_NEW_REQUEST 1
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int (*issue_fn)(struct mmc_queue *, struct request *);
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int (*cmdq_issue_fn)(struct mmc_queue *,
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struct request *);
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void (*cmdq_complete_fn)(struct request *);
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void (*cmdq_error_fn)(struct mmc_queue *);
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enum blk_eh_timer_return (*cmdq_req_timed_out)(struct request *);
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void *data;
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struct request_queue *queue;
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struct mmc_queue_req mqrq[2];
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struct mmc_queue_req *mqrq_cur;
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struct mmc_queue_req *mqrq_prev;
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struct mmc_queue_req *mqrq_cmdq;
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bool wr_packing_enabled;
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int num_of_potential_packed_wr_reqs;
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int num_wr_reqs_to_start_packing;
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bool no_pack_for_random;
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struct work_struct cmdq_err_work;
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struct completion cmdq_pending_req_done;
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struct request *cmdq_req_peeked;
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int (*err_check_fn) (struct mmc_card *, struct mmc_async_req *);
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void (*packed_test_fn) (struct request_queue *, struct mmc_queue_req *);
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void (*cmdq_shutdown)(struct mmc_queue *);
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};
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extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
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const char *, int);
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extern void mmc_cleanup_queue(struct mmc_queue *);
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extern int mmc_queue_suspend(struct mmc_queue *, int);
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extern void mmc_queue_resume(struct mmc_queue *);
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extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
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struct mmc_queue_req *);
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extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
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extern void mmc_queue_bounce_post(struct mmc_queue_req *);
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extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
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extern void mmc_packed_clean(struct mmc_queue *);
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extern int mmc_access_rpmb(struct mmc_queue *);
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extern void print_mmc_packing_stats(struct mmc_card *card);
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extern int mmc_cmdq_init(struct mmc_queue *mq, struct mmc_card *card);
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extern void mmc_cmdq_clean(struct mmc_queue *mq, struct mmc_card *card);
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#endif
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