1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef LINUX_MMC_HSQ_H
3 #define LINUX_MMC_HSQ_H
4 
5 #define HSQ_NUM_SLOTS	64
6 #define HSQ_INVALID_TAG	HSQ_NUM_SLOTS
7 
8 struct hsq_slot {
9 	struct mmc_request *mrq;
10 };
11 
12 struct mmc_hsq {
13 	struct mmc_host *mmc;
14 	struct mmc_request *mrq;
15 	wait_queue_head_t wait_queue;
16 	struct hsq_slot *slot;
17 	spinlock_t lock;
18 	struct work_struct retry_work;
19 
20 	int next_tag;
21 	int num_slots;
22 	int qcnt;
23 	int tail_tag;
24 	int tag_slot[HSQ_NUM_SLOTS];
25 
26 	bool enabled;
27 	bool waiting_for_idle;
28 	bool recovery_halt;
29 };
30 
31 int mmc_hsq_init(struct mmc_hsq *hsq, struct mmc_host *mmc);
32 void mmc_hsq_suspend(struct mmc_host *mmc);
33 int mmc_hsq_resume(struct mmc_host *mmc);
34 bool mmc_hsq_finalize_request(struct mmc_host *mmc, struct mmc_request *mrq);
35 
36 #endif
37