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path: root/drivers/mmc/card/queue.h
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Diffstat (limited to 'drivers/mmc/card/queue.h')
-rw-r--r--drivers/mmc/card/queue.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
new file mode 100644
index 000000000..99e6521e6
--- /dev/null
+++ b/drivers/mmc/card/queue.h
@@ -0,0 +1,78 @@
+#ifndef MMC_QUEUE_H
+#define MMC_QUEUE_H
+
+#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH)
+
+struct request;
+struct task_struct;
+
+struct mmc_blk_request {
+ struct mmc_request mrq;
+ struct mmc_command sbc;
+ struct mmc_command cmd;
+ struct mmc_command stop;
+ struct mmc_data data;
+};
+
+enum mmc_packed_type {
+ MMC_PACKED_NONE = 0,
+ MMC_PACKED_WRITE,
+};
+
+#define mmc_packed_cmd(type) ((type) != MMC_PACKED_NONE)
+#define mmc_packed_wr(type) ((type) == MMC_PACKED_WRITE)
+
+struct mmc_packed {
+ struct list_head list;
+ u32 cmd_hdr[1024];
+ unsigned int blocks;
+ u8 nr_entries;
+ u8 retries;
+ s16 idx_failure;
+};
+
+struct mmc_queue_req {
+ struct request *req;
+ struct mmc_blk_request brq;
+ struct scatterlist *sg;
+ char *bounce_buf;
+ struct scatterlist *bounce_sg;
+ unsigned int bounce_sg_len;
+ struct mmc_async_req mmc_active;
+ enum mmc_packed_type cmd_type;
+ struct mmc_packed *packed;
+};
+
+struct mmc_queue {
+ struct mmc_card *card;
+ struct task_struct *thread;
+ struct semaphore thread_sem;
+ unsigned int flags;
+#define MMC_QUEUE_SUSPENDED (1 << 0)
+#define MMC_QUEUE_NEW_REQUEST (1 << 1)
+
+ int (*issue_fn)(struct mmc_queue *, struct request *);
+ void *data;
+ struct request_queue *queue;
+ struct mmc_queue_req mqrq[2];
+ struct mmc_queue_req *mqrq_cur;
+ struct mmc_queue_req *mqrq_prev;
+};
+
+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 *);
+extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
+extern void mmc_queue_bounce_post(struct mmc_queue_req *);
+
+extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
+extern void mmc_packed_clean(struct mmc_queue *);
+
+extern int mmc_access_rpmb(struct mmc_queue *);
+
+#endif