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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef LINUX_MMC_HSQ_H
- #define LINUX_MMC_HSQ_H
- #define HSQ_NUM_SLOTS 64
- #define HSQ_INVALID_TAG HSQ_NUM_SLOTS
- /*
- * For MMC host software queue, we only allow 2 requests in
- * flight to avoid a long latency.
- */
- #define HSQ_NORMAL_DEPTH 2
- /*
- * For 4k random writes, we allow hsq_depth to increase to 5
- * for better performance.
- */
- #define HSQ_PERFORMANCE_DEPTH 5
- struct hsq_slot {
- struct mmc_request *mrq;
- };
- struct mmc_hsq {
- struct mmc_host *mmc;
- struct mmc_request *mrq;
- wait_queue_head_t wait_queue;
- struct hsq_slot *slot;
- spinlock_t lock;
- struct work_struct retry_work;
- int next_tag;
- int num_slots;
- int qcnt;
- int tail_tag;
- int tag_slot[HSQ_NUM_SLOTS];
- bool enabled;
- bool waiting_for_idle;
- bool recovery_halt;
- };
- int mmc_hsq_init(struct mmc_hsq *hsq, struct mmc_host *mmc);
- void mmc_hsq_suspend(struct mmc_host *mmc);
- int mmc_hsq_resume(struct mmc_host *mmc);
- bool mmc_hsq_finalize_request(struct mmc_host *mmc, struct mmc_request *mrq);
- #endif
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