1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef MMC_QUEUE_H 3 #define MMC_QUEUE_H 4 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 11 static inline struct mmc_queue_req *req_to_mmc_queue_req(struct request *rq) 12 { 13 return blk_mq_rq_to_pdu(rq); 14 } 15 16 struct mmc_queue_req; 17 18 static inline struct request *mmc_queue_req_to_req(struct mmc_queue_req *mqr) 19 { 20 return blk_mq_rq_from_pdu(mqr); 21 } 22 23 struct task_struct; 24 struct mmc_blk_data; 25 struct mmc_blk_ioc_data; 26 27 struct mmc_blk_request { 28 struct mmc_request mrq; 29 struct mmc_command sbc; 30 struct mmc_command cmd; 31 struct mmc_command stop; 32 struct mmc_data data; 33 int retune_retry_done; 34 }; 35 36 /** 37 * enum mmc_drv_op - enumerates the operations in the mmc_queue_req 38 * @MMC_DRV_OP_IOCTL: ioctl operation 39 * @MMC_DRV_OP_BOOT_WP: write protect boot partitions 40 * @MMC_DRV_OP_GET_CARD_STATUS: get card status 41 * @MMC_DRV_OP_GET_EXT_CSD: get the EXT CSD from an eMMC card 42 */ 43 enum mmc_drv_op { 44 MMC_DRV_OP_IOCTL, 45 MMC_DRV_OP_BOOT_WP, 46 MMC_DRV_OP_GET_CARD_STATUS, 47 MMC_DRV_OP_GET_EXT_CSD, 48 }; 49 50 struct mmc_queue_req { 51 struct mmc_blk_request brq; 52 struct scatterlist *sg; 53 struct mmc_async_req areq; 54 enum mmc_drv_op drv_op; 55 int drv_op_result; 56 void *drv_op_data; 57 unsigned int ioc_count; 58 }; 59 60 struct mmc_queue { 61 struct mmc_card *card; 62 struct task_struct *thread; 63 struct semaphore thread_sem; 64 bool suspended; 65 bool asleep; 66 struct mmc_blk_data *blkdata; 67 struct request_queue *queue; 68 /* 69 * FIXME: this counter is not a very reliable way of keeping 70 * track of how many requests that are ongoing. Switch to just 71 * letting the block core keep track of requests and per-request 72 * associated mmc_queue_req data. 73 */ 74 int qcnt; 75 }; 76 77 extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *, 78 const char *); 79 extern void mmc_cleanup_queue(struct mmc_queue *); 80 extern void mmc_queue_suspend(struct mmc_queue *); 81 extern void mmc_queue_resume(struct mmc_queue *); 82 extern unsigned int mmc_queue_map_sg(struct mmc_queue *, 83 struct mmc_queue_req *); 84 85 extern int mmc_access_rpmb(struct mmc_queue *); 86 87 #endif 88