88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
#ifndef MMC_QUEUE_H
|
||
|
#define MMC_QUEUE_H
|
||
|
|
||
|
#include <linux/types.h>
|
||
|
#include <linux/blkdev.h>
|
||
|
#include <linux/blk-mq.h>
|
||
|
#include <linux/mmc/core.h>
|
||
|
#include <linux/mmc/host.h>
|
||
|
|
||
|
static inline struct mmc_queue_req *req_to_mmc_queue_req(struct request *rq)
|
||
|
{
|
||
|
return blk_mq_rq_to_pdu(rq);
|
||
|
}
|
||
|
|
||
|
struct mmc_queue_req;
|
||
|
|
||
|
static inline struct request *mmc_queue_req_to_req(struct mmc_queue_req *mqr)
|
||
|
{
|
||
|
return blk_mq_rq_from_pdu(mqr);
|
||
|
}
|
||
|
|
||
|
struct task_struct;
|
||
|
struct mmc_blk_data;
|
||
|
struct mmc_blk_ioc_data;
|
||
|
|
||
|
struct mmc_blk_request {
|
||
|
struct mmc_request mrq;
|
||
|
struct mmc_command sbc;
|
||
|
struct mmc_command cmd;
|
||
|
struct mmc_command stop;
|
||
|
struct mmc_data data;
|
||
|
int retune_retry_done;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* enum mmc_drv_op - enumerates the operations in the mmc_queue_req
|
||
|
* @MMC_DRV_OP_IOCTL: ioctl operation
|
||
|
* @MMC_DRV_OP_IOCTL_RPMB: RPMB-oriented ioctl operation
|
||
|
* @MMC_DRV_OP_BOOT_WP: write protect boot partitions
|
||
|
* @MMC_DRV_OP_GET_CARD_STATUS: get card status
|
||
|
* @MMC_DRV_OP_GET_EXT_CSD: get the EXT CSD from an eMMC card
|
||
|
*/
|
||
|
enum mmc_drv_op {
|
||
|
MMC_DRV_OP_IOCTL,
|
||
|
MMC_DRV_OP_IOCTL_RPMB,
|
||
|
MMC_DRV_OP_BOOT_WP,
|
||
|
MMC_DRV_OP_GET_CARD_STATUS,
|
||
|
MMC_DRV_OP_GET_EXT_CSD,
|
||
|
};
|
||
|
|
||
|
struct mmc_queue_req {
|
||
|
struct mmc_blk_request brq;
|
||
|
struct scatterlist *sg;
|
||
|
struct mmc_async_req areq;
|
||
|
enum mmc_drv_op drv_op;
|
||
|
int drv_op_result;
|
||
|
void *drv_op_data;
|
||
|
unsigned int ioc_count;
|
||
|
};
|
||
|
|
||
|
struct mmc_queue {
|
||
|
struct mmc_card *card;
|
||
|
struct task_struct *thread;
|
||
|
struct semaphore thread_sem;
|
||
|
bool suspended;
|
||
|
bool asleep;
|
||
|
struct mmc_blk_data *blkdata;
|
||
|
struct request_queue *queue;
|
||
|
/*
|
||
|
* FIXME: this counter is not a very reliable way of keeping
|
||
|
* track of how many requests that are ongoing. Switch to just
|
||
|
* letting the block core keep track of requests and per-request
|
||
|
* associated mmc_queue_req data.
|
||
|
*/
|
||
|
int qcnt;
|
||
|
};
|
||
|
|
||
|
extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
|
||
|
const char *);
|
||
|
extern void mmc_cleanup_queue(struct mmc_queue *);
|
||
|
extern void mmc_queue_suspend(struct mmc_queue *);
|
||
|
extern void mmc_queue_resume(struct mmc_queue *);
|
||
|
extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
|
||
|
struct mmc_queue_req *);
|
||
|
|
||
|
#endif
|